1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2016 Free Software
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
34 /* Only MS-DOS does not define `subprocesses'. */
37 #include <sys/socket.h>
39 #include <netinet/in.h>
40 #include <arpa/inet.h>
42 /* Are local (unix) sockets supported? */
43 #if defined (HAVE_SYS_UN_H)
44 #if !defined (AF_LOCAL) && defined (AF_UNIX)
45 #define AF_LOCAL AF_UNIX
48 #define HAVE_LOCAL_SOCKETS
53 #include <sys/ioctl.h>
54 #if defined (HAVE_NET_IF_H)
56 #endif /* HAVE_NET_IF_H */
58 #if defined (HAVE_IFADDRS_H)
59 /* Must be after net/if.h */
62 /* We only use structs from this header when we use getifaddrs. */
63 #if defined (HAVE_NET_IF_DL_H)
64 #include <net/if_dl.h>
74 # include <sys/stream.h>
75 # include <sys/stropts.h>
79 #include <arpa/nameser.h>
95 #endif /* subprocesses */
101 #include "character.h"
106 #include "termopts.h"
107 #include "keyboard.h"
108 #include "blockinput.h"
110 #include "sysselect.h"
111 #include "syssignal.h"
117 #ifdef HAVE_WINDOW_SYSTEM
119 #endif /* HAVE_WINDOW_SYSTEM */
122 #include "xgselect.h"
129 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
130 struct timespec
*, void *);
133 /* Work around GCC 4.7.0 bug with strict overflow checking; see
134 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>.
135 This bug appears to be fixed in GCC 5.1, so don't work around it there. */
136 #if __GNUC__ == 4 && __GNUC_MINOR__ >= 3
137 # pragma GCC diagnostic ignored "-Wstrict-overflow"
140 /* True if keyboard input is on hold, zero otherwise. */
142 static bool kbd_is_on_hold
;
144 /* Nonzero means don't run process sentinels. This is used
146 bool inhibit_sentinels
;
151 # define SOCK_CLOEXEC 0
156 /* Emulate GNU/Linux accept4 and socket well enough for this module. */
159 close_on_exec (int fd
)
162 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
167 # define accept4(sockfd, addr, addrlen, flags) \
168 process_accept4 (sockfd, addr, addrlen, flags)
170 accept4 (int sockfd
, struct sockaddr
*addr
, socklen_t
*addrlen
, int flags
)
172 return close_on_exec (accept (sockfd
, addr
, addrlen
));
176 process_socket (int domain
, int type
, int protocol
)
178 return close_on_exec (socket (domain
, type
, protocol
));
181 # define socket(domain, type, protocol) process_socket (domain, type, protocol)
184 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
185 #define NETCONN1_P(p) (EQ (p->type, Qnetwork))
186 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
187 #define SERIALCONN1_P(p) (EQ (p->type, Qserial))
188 #define PIPECONN_P(p) (EQ (XPROCESS (p)->type, Qpipe))
189 #define PIPECONN1_P(p) (EQ (p->type, Qpipe))
191 /* Number of events of change of status of a process. */
192 static EMACS_INT process_tick
;
193 /* Number of events for which the user or sentinel has been notified. */
194 static EMACS_INT update_tick
;
196 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects.
197 The code can be simplified by assuming NON_BLOCKING_CONNECT once
198 Emacs starts assuming POSIX 1003.1-2001 or later. */
200 #if (defined HAVE_SELECT \
201 && (defined GNU_LINUX || defined HAVE_GETPEERNAME) \
202 && (defined EWOULDBLOCK || defined EINPROGRESS))
203 # define NON_BLOCKING_CONNECT
206 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
207 this system. We need to read full packets, so we need a
208 "non-destructive" select. So we require either native select,
209 or emulation of select using FIONREAD. */
211 #ifndef BROKEN_DATAGRAM_SOCKETS
212 # if defined HAVE_SELECT || defined USABLE_FIONREAD
213 # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE
214 # define DATAGRAM_SOCKETS
219 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
220 # define HAVE_SEQPACKET
223 #define READ_OUTPUT_DELAY_INCREMENT (TIMESPEC_RESOLUTION / 100)
224 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
225 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
227 /* Number of processes which have a non-zero read_output_delay,
228 and therefore might be delayed for adaptive read buffering. */
230 static int process_output_delay_count
;
232 /* True if any process has non-nil read_output_skip. */
234 static bool process_output_skip
;
236 static void create_process (Lisp_Object
, char **, Lisp_Object
);
238 static bool keyboard_bit_set (fd_set
*);
240 static void deactivate_process (Lisp_Object
);
241 static int status_notify (struct Lisp_Process
*, struct Lisp_Process
*);
242 static int read_process_output (Lisp_Object
, int);
243 static void handle_child_signal (int);
244 static void create_pty (Lisp_Object
);
246 static Lisp_Object
get_process (register Lisp_Object name
);
247 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
249 /* Mask of bits indicating the descriptors that we wait for input on. */
251 static fd_set input_wait_mask
;
253 /* Mask that excludes keyboard input descriptor(s). */
255 static fd_set non_keyboard_wait_mask
;
257 /* Mask that excludes process input descriptor(s). */
259 static fd_set non_process_wait_mask
;
261 /* Mask for selecting for write. */
263 static fd_set write_mask
;
265 #ifdef NON_BLOCKING_CONNECT
266 /* Mask of bits indicating the descriptors that we wait for connect to
267 complete on. Once they complete, they are removed from this mask
268 and added to the input_wait_mask and non_keyboard_wait_mask. */
270 static fd_set connect_wait_mask
;
272 /* Number of bits set in connect_wait_mask. */
273 static int num_pending_connects
;
274 #endif /* NON_BLOCKING_CONNECT */
276 /* The largest descriptor currently in use for a process object; -1 if none. */
277 static int max_process_desc
;
279 /* The largest descriptor currently in use for input; -1 if none. */
280 static int max_input_desc
;
282 /* Indexed by descriptor, gives the process (if any) for that descriptor. */
283 static Lisp_Object chan_process
[FD_SETSIZE
];
284 static void wait_for_socket_fds (Lisp_Object
, char const *);
286 /* Alist of elements (NAME . PROCESS). */
287 static Lisp_Object Vprocess_alist
;
289 /* Buffered-ahead input char from process, indexed by channel.
290 -1 means empty (no char is buffered).
291 Used on sys V where the only way to tell if there is any
292 output from the process is to read at least one char.
293 Always -1 on systems that support FIONREAD. */
295 static int proc_buffered_char
[FD_SETSIZE
];
297 /* Table of `struct coding-system' for each process. */
298 static struct coding_system
*proc_decode_coding_system
[FD_SETSIZE
];
299 static struct coding_system
*proc_encode_coding_system
[FD_SETSIZE
];
301 #ifdef DATAGRAM_SOCKETS
302 /* Table of `partner address' for datagram sockets. */
303 static struct sockaddr_and_len
{
306 } datagram_address
[FD_SETSIZE
];
307 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
308 #define DATAGRAM_CONN_P(proc) \
309 (PROCESSP (proc) && \
310 XPROCESS (proc)->infd >= 0 && \
311 datagram_address[XPROCESS (proc)->infd].sa != 0)
313 #define DATAGRAM_CHAN_P(chan) (0)
314 #define DATAGRAM_CONN_P(proc) (0)
317 /* FOR_EACH_PROCESS (LIST_VAR, PROC_VAR) followed by a statement is
318 a `for' loop which iterates over processes from Vprocess_alist. */
320 #define FOR_EACH_PROCESS(list_var, proc_var) \
321 FOR_EACH_ALIST_VALUE (Vprocess_alist, list_var, proc_var)
323 /* These setters are used only in this file, so they can be private. */
325 pset_buffer (struct Lisp_Process
*p
, Lisp_Object val
)
330 pset_command (struct Lisp_Process
*p
, Lisp_Object val
)
335 pset_decode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
337 p
->decode_coding_system
= val
;
340 pset_decoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
342 p
->decoding_buf
= val
;
345 pset_encode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
347 p
->encode_coding_system
= val
;
350 pset_encoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
352 p
->encoding_buf
= val
;
355 pset_filter (struct Lisp_Process
*p
, Lisp_Object val
)
357 p
->filter
= NILP (val
) ? Qinternal_default_process_filter
: val
;
360 pset_log (struct Lisp_Process
*p
, Lisp_Object val
)
365 pset_mark (struct Lisp_Process
*p
, Lisp_Object val
)
370 pset_name (struct Lisp_Process
*p
, Lisp_Object val
)
375 pset_plist (struct Lisp_Process
*p
, Lisp_Object val
)
380 pset_sentinel (struct Lisp_Process
*p
, Lisp_Object val
)
382 p
->sentinel
= NILP (val
) ? Qinternal_default_process_sentinel
: val
;
385 pset_tty_name (struct Lisp_Process
*p
, Lisp_Object val
)
390 pset_type (struct Lisp_Process
*p
, Lisp_Object val
)
395 pset_write_queue (struct Lisp_Process
*p
, Lisp_Object val
)
397 p
->write_queue
= val
;
400 pset_stderrproc (struct Lisp_Process
*p
, Lisp_Object val
)
407 make_lisp_proc (struct Lisp_Process
*p
)
409 return make_lisp_ptr (p
, Lisp_Vectorlike
);
412 static struct fd_callback_data
418 int condition
; /* Mask of the defines above. */
419 } fd_callback_info
[FD_SETSIZE
];
422 /* Add a file descriptor FD to be monitored for when read is possible.
423 When read is possible, call FUNC with argument DATA. */
426 add_read_fd (int fd
, fd_callback func
, void *data
)
428 add_keyboard_wait_descriptor (fd
);
430 fd_callback_info
[fd
].func
= func
;
431 fd_callback_info
[fd
].data
= data
;
432 fd_callback_info
[fd
].condition
|= FOR_READ
;
435 /* Stop monitoring file descriptor FD for when read is possible. */
438 delete_read_fd (int fd
)
440 delete_keyboard_wait_descriptor (fd
);
442 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
443 if (fd_callback_info
[fd
].condition
== 0)
445 fd_callback_info
[fd
].func
= 0;
446 fd_callback_info
[fd
].data
= 0;
450 /* Add a file descriptor FD to be monitored for when write is possible.
451 When write is possible, call FUNC with argument DATA. */
454 add_write_fd (int fd
, fd_callback func
, void *data
)
456 FD_SET (fd
, &write_mask
);
457 if (fd
> max_input_desc
)
460 fd_callback_info
[fd
].func
= func
;
461 fd_callback_info
[fd
].data
= data
;
462 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
465 /* FD is no longer an input descriptor; update max_input_desc accordingly. */
468 delete_input_desc (int fd
)
470 if (fd
== max_input_desc
)
474 while (0 <= fd
&& ! (FD_ISSET (fd
, &input_wait_mask
)
475 || FD_ISSET (fd
, &write_mask
)));
481 /* Stop monitoring file descriptor FD for when write is possible. */
484 delete_write_fd (int fd
)
486 FD_CLR (fd
, &write_mask
);
487 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
488 if (fd_callback_info
[fd
].condition
== 0)
490 fd_callback_info
[fd
].func
= 0;
491 fd_callback_info
[fd
].data
= 0;
492 delete_input_desc (fd
);
497 /* Compute the Lisp form of the process status, p->status, from
498 the numeric status that was returned by `wait'. */
500 static Lisp_Object
status_convert (int);
503 update_status (struct Lisp_Process
*p
)
505 eassert (p
->raw_status_new
);
506 pset_status (p
, status_convert (p
->raw_status
));
507 p
->raw_status_new
= 0;
510 /* Convert a process status word in Unix format to
511 the list that we use internally. */
514 status_convert (int w
)
517 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
518 else if (WIFEXITED (w
))
519 return Fcons (Qexit
, Fcons (make_number (WEXITSTATUS (w
)),
520 WCOREDUMP (w
) ? Qt
: Qnil
));
521 else if (WIFSIGNALED (w
))
522 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
523 WCOREDUMP (w
) ? Qt
: Qnil
));
528 /* Given a status-list, extract the three pieces of information
529 and store them individually through the three pointers. */
532 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, bool *coredump
)
546 *code
= XFASTINT (XCAR (tem
));
548 *coredump
= !NILP (tem
);
552 /* Return a string describing a process status list. */
555 status_message (struct Lisp_Process
*p
)
557 Lisp_Object status
= p
->status
;
563 decode_status (status
, &symbol
, &code
, &coredump
);
565 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
568 synchronize_system_messages_locale ();
569 signame
= strsignal (code
);
571 string
= build_string ("unknown");
576 string
= build_unibyte_string (signame
);
577 if (! NILP (Vlocale_coding_system
))
578 string
= (code_convert_string_norecord
579 (string
, Vlocale_coding_system
, 0));
580 c1
= STRING_CHAR (SDATA (string
));
583 Faset (string
, make_number (0), make_number (c2
));
585 AUTO_STRING (suffix
, coredump
? " (core dumped)\n" : "\n");
586 return concat2 (string
, suffix
);
588 else if (EQ (symbol
, Qexit
))
591 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
593 return build_string ("finished\n");
594 AUTO_STRING (prefix
, "exited abnormally with code ");
595 string
= Fnumber_to_string (make_number (code
));
596 AUTO_STRING (suffix
, coredump
? " (core dumped)\n" : "\n");
597 return concat3 (prefix
, string
, suffix
);
599 else if (EQ (symbol
, Qfailed
))
601 AUTO_STRING (prefix
, "failed with code ");
602 string
= Fnumber_to_string (make_number (code
));
603 AUTO_STRING (suffix
, "\n");
604 return concat3 (prefix
, string
, suffix
);
607 return Fcopy_sequence (Fsymbol_name (symbol
));
610 enum { PTY_NAME_SIZE
= 24 };
612 /* Open an available pty, returning a file descriptor.
613 Store into PTY_NAME the file name of the terminal corresponding to the pty.
614 Return -1 on failure. */
617 allocate_pty (char pty_name
[PTY_NAME_SIZE
])
626 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
627 for (i
= 0; i
< 16; i
++)
630 #ifdef PTY_NAME_SPRINTF
633 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
634 #endif /* no PTY_NAME_SPRINTF */
638 #else /* no PTY_OPEN */
639 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
640 #endif /* no PTY_OPEN */
644 #ifdef PTY_TTY_NAME_SPRINTF
647 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
648 #endif /* no PTY_TTY_NAME_SPRINTF */
650 /* Set FD's close-on-exec flag. This is needed even if
651 PT_OPEN calls posix_openpt with O_CLOEXEC, since POSIX
652 doesn't require support for that combination.
653 Do this after PTY_TTY_NAME_SPRINTF, which on some platforms
654 doesn't work if the close-on-exec flag is set (Bug#20555).
655 Multithreaded platforms where posix_openpt ignores
656 O_CLOEXEC (or where PTY_OPEN doesn't call posix_openpt)
657 have a race condition between the PTY_OPEN and here. */
658 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
660 /* Check to make certain that both sides are available.
661 This avoids a nasty yet stupid bug in rlogins. */
662 if (faccessat (AT_FDCWD
, pty_name
, R_OK
| W_OK
, AT_EACCESS
) != 0)
675 #endif /* HAVE_PTYS */
679 /* Allocate basically initialized process. */
681 static struct Lisp_Process
*
682 allocate_process (void)
684 return ALLOCATE_ZEROED_PSEUDOVECTOR (struct Lisp_Process
, pid
, PVEC_PROCESS
);
688 make_process (Lisp_Object name
)
690 register Lisp_Object val
, tem
, name1
;
691 register struct Lisp_Process
*p
;
692 char suffix
[sizeof "<>" + INT_STRLEN_BOUND (printmax_t
)];
695 p
= allocate_process ();
696 /* Initialize Lisp data. Note that allocate_process initializes all
697 Lisp data to nil, so do it only for slots which should not be nil. */
698 pset_status (p
, Qrun
);
699 pset_mark (p
, Fmake_marker ());
701 /* Initialize non-Lisp data. Note that allocate_process zeroes out all
702 non-Lisp data, so do it only for slots which should not be zero. */
705 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
709 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
710 p
->gnutls_boot_parameters
= Qnil
;
713 /* If name is already in use, modify it until it is unused. */
718 tem
= Fget_process (name1
);
719 if (NILP (tem
)) break;
720 name1
= concat2 (name
, make_formatted_string (suffix
, "<%"pMd
">", i
));
724 pset_sentinel (p
, Qinternal_default_process_sentinel
);
725 pset_filter (p
, Qinternal_default_process_filter
);
726 XSETPROCESS (val
, p
);
727 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
732 remove_process (register Lisp_Object proc
)
734 register Lisp_Object pair
;
736 pair
= Frassq (proc
, Vprocess_alist
);
737 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
739 deactivate_process (proc
);
742 #ifdef HAVE_GETADDRINFO_A
744 free_dns_request (Lisp_Object proc
)
746 struct Lisp_Process
*p
= XPROCESS (proc
);
748 if (p
->dns_request
->ar_result
)
749 freeaddrinfo (p
->dns_request
->ar_result
);
750 xfree (p
->dns_request
);
751 p
->dns_request
= NULL
;
756 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
757 doc
: /* Return t if OBJECT is a process. */)
760 return PROCESSP (object
) ? Qt
: Qnil
;
763 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
764 doc
: /* Return the process named NAME, or nil if there is none. */)
765 (register Lisp_Object name
)
770 return Fcdr (Fassoc (name
, Vprocess_alist
));
773 /* This is how commands for the user decode process arguments. It
774 accepts a process, a process name, a buffer, a buffer name, or nil.
775 Buffers denote the first process in the buffer, and nil denotes the
779 get_process (register Lisp_Object name
)
781 register Lisp_Object proc
, obj
;
784 obj
= Fget_process (name
);
786 obj
= Fget_buffer (name
);
788 error ("Process %s does not exist", SDATA (name
));
790 else if (NILP (name
))
791 obj
= Fcurrent_buffer ();
795 /* Now obj should be either a buffer object or a process object. */
798 if (NILP (BVAR (XBUFFER (obj
), name
)))
799 error ("Attempt to get process for a dead buffer");
800 proc
= Fget_buffer_process (obj
);
802 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
813 /* Fdelete_process promises to immediately forget about the process, but in
814 reality, Emacs needs to remember those processes until they have been
815 treated by the SIGCHLD handler and waitpid has been invoked on them;
816 otherwise they might fill up the kernel's process table.
818 Some processes created by call-process are also put onto this list.
820 Members of this list are (process-ID . filename) pairs. The
821 process-ID is a number; the filename, if a string, is a file that
822 needs to be removed after the process exits. */
823 static Lisp_Object deleted_pid_list
;
826 record_deleted_pid (pid_t pid
, Lisp_Object filename
)
828 deleted_pid_list
= Fcons (Fcons (make_fixnum_or_float (pid
), filename
),
829 /* GC treated elements set to nil. */
830 Fdelq (Qnil
, deleted_pid_list
));
834 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
835 doc
: /* Delete PROCESS: kill it and forget about it immediately.
836 PROCESS may be a process, a buffer, the name of a process or buffer, or
837 nil, indicating the current buffer's process. */)
838 (register Lisp_Object process
)
840 register struct Lisp_Process
*p
;
842 process
= get_process (process
);
843 p
= XPROCESS (process
);
845 #ifdef HAVE_GETADDRINFO_A
850 gai_cancel (p
->dns_request
);
851 ret
= gai_error (p
->dns_request
);
852 if (ret
== EAI_CANCELED
|| ret
== 0)
853 free_dns_request (process
);
856 /* If we're called during shutdown, we don't really about
857 freeing all the resources. Otherwise wait until
858 completion, and then free the request. */
859 if (! inhibit_sentinels
)
861 gai_suspend ((struct gaicb
const **) &p
->dns_request
, 1, NULL
);
862 free_dns_request (process
);
868 p
->raw_status_new
= 0;
869 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
871 pset_status (p
, list2 (Qexit
, make_number (0)));
872 p
->tick
= ++process_tick
;
873 status_notify (p
, NULL
);
874 redisplay_preserve_echo_area (13);
879 record_kill_process (p
, Qnil
);
883 /* Update P's status, since record_kill_process will make the
884 SIGCHLD handler update deleted_pid_list, not *P. */
886 if (p
->raw_status_new
)
888 symbol
= CONSP (p
->status
) ? XCAR (p
->status
) : p
->status
;
889 if (! (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)))
890 pset_status (p
, list2 (Qsignal
, make_number (SIGKILL
)));
892 p
->tick
= ++process_tick
;
893 status_notify (p
, NULL
);
894 redisplay_preserve_echo_area (13);
897 remove_process (process
);
901 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
902 doc
: /* Return the status of PROCESS.
903 The returned value is one of the following symbols:
904 run -- for a process that is running.
905 stop -- for a process stopped but continuable.
906 exit -- for a process that has exited.
907 signal -- for a process that has got a fatal signal.
908 open -- for a network stream connection that is open.
909 listen -- for a network stream server that is listening.
910 closed -- for a network stream connection that is closed.
911 connect -- when waiting for a non-blocking connection to complete.
912 failed -- when a non-blocking connection has failed.
913 nil -- if arg is a process name and no such process exists.
914 PROCESS may be a process, a buffer, the name of a process, or
915 nil, indicating the current buffer's process. */)
916 (register Lisp_Object process
)
918 register struct Lisp_Process
*p
;
919 register Lisp_Object status
;
921 if (STRINGP (process
))
922 process
= Fget_process (process
);
924 process
= get_process (process
);
929 p
= XPROCESS (process
);
930 if (p
->raw_status_new
)
934 status
= XCAR (status
);
935 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
937 if (EQ (status
, Qexit
))
939 else if (EQ (p
->command
, Qt
))
941 else if (EQ (status
, Qrun
))
947 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
949 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
950 If PROCESS has not yet exited or died, return 0. */)
951 (register Lisp_Object process
)
953 CHECK_PROCESS (process
);
954 if (XPROCESS (process
)->raw_status_new
)
955 update_status (XPROCESS (process
));
956 if (CONSP (XPROCESS (process
)->status
))
957 return XCAR (XCDR (XPROCESS (process
)->status
));
958 return make_number (0);
961 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
962 doc
: /* Return the process id of PROCESS.
963 This is the pid of the external process which PROCESS uses or talks to.
964 For a network connection, this value is nil. */)
965 (register Lisp_Object process
)
969 CHECK_PROCESS (process
);
970 pid
= XPROCESS (process
)->pid
;
971 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
974 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
975 doc
: /* Return the name of PROCESS, as a string.
976 This is the name of the program invoked in PROCESS,
977 possibly modified to make it unique among process names. */)
978 (register Lisp_Object process
)
980 CHECK_PROCESS (process
);
981 return XPROCESS (process
)->name
;
984 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
985 doc
: /* Return the command that was executed to start PROCESS.
986 This is a list of strings, the first string being the program executed
987 and the rest of the strings being the arguments given to it.
988 For a network or serial process, this is nil (process is running) or t
989 (process is stopped). */)
990 (register Lisp_Object process
)
992 CHECK_PROCESS (process
);
993 return XPROCESS (process
)->command
;
996 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
997 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
998 This is the terminal that the process itself reads and writes on,
999 not the name of the pty that Emacs uses to talk with that terminal. */)
1000 (register Lisp_Object process
)
1002 CHECK_PROCESS (process
);
1003 return XPROCESS (process
)->tty_name
;
1006 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
1008 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
1010 (register Lisp_Object process
, Lisp_Object buffer
)
1012 struct Lisp_Process
*p
;
1014 CHECK_PROCESS (process
);
1016 CHECK_BUFFER (buffer
);
1017 p
= XPROCESS (process
);
1018 pset_buffer (p
, buffer
);
1019 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1020 pset_childp (p
, Fplist_put (p
->childp
, QCbuffer
, buffer
));
1021 setup_process_coding_systems (process
);
1025 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
1027 doc
: /* Return the buffer PROCESS is associated with.
1028 The default process filter inserts output from PROCESS into this buffer. */)
1029 (register Lisp_Object process
)
1031 CHECK_PROCESS (process
);
1032 return XPROCESS (process
)->buffer
;
1035 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
1037 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1038 (register Lisp_Object process
)
1040 CHECK_PROCESS (process
);
1041 return XPROCESS (process
)->mark
;
1045 set_process_filter_masks (struct Lisp_Process
*p
)
1047 if (EQ (p
->filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1049 FD_CLR (p
->infd
, &input_wait_mask
);
1050 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1052 else if (EQ (p
->filter
, Qt
)
1053 /* Network or serial process not stopped: */
1054 && !EQ (p
->command
, Qt
))
1056 FD_SET (p
->infd
, &input_wait_mask
);
1057 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1061 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1063 doc
: /* Give PROCESS the filter function FILTER; nil means default.
1064 A value of t means stop accepting output from the process.
1066 When a process has a non-default filter, its buffer is not used for output.
1067 Instead, each time it does output, the entire string of output is
1068 passed to the filter.
1070 The filter gets two arguments: the process and the string of output.
1071 The string argument is normally a multibyte string, except:
1072 - if the process's input coding system is no-conversion or raw-text,
1073 it is a unibyte string (the non-converted input), or else
1074 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1075 string (the result of converting the decoded input multibyte
1076 string to unibyte with `string-make-unibyte'). */)
1077 (Lisp_Object process
, Lisp_Object filter
)
1079 CHECK_PROCESS (process
);
1080 struct Lisp_Process
*p
= XPROCESS (process
);
1082 /* Don't signal an error if the process's input file descriptor
1083 is closed. This could make debugging Lisp more difficult,
1084 for example when doing something like
1086 (setq process (start-process ...))
1088 (set-process-filter process ...) */
1091 filter
= Qinternal_default_process_filter
;
1093 pset_filter (p
, filter
);
1096 set_process_filter_masks (p
);
1098 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1099 pset_childp (p
, Fplist_put (p
->childp
, QCfilter
, filter
));
1100 setup_process_coding_systems (process
);
1104 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1106 doc
: /* Return the filter function of PROCESS.
1107 See `set-process-filter' for more info on filter functions. */)
1108 (register Lisp_Object process
)
1110 CHECK_PROCESS (process
);
1111 return XPROCESS (process
)->filter
;
1114 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1116 doc
: /* Give PROCESS the sentinel SENTINEL; nil for default.
1117 The sentinel is called as a function when the process changes state.
1118 It gets two arguments: the process, and a string describing the change. */)
1119 (register Lisp_Object process
, Lisp_Object sentinel
)
1121 struct Lisp_Process
*p
;
1123 CHECK_PROCESS (process
);
1124 p
= XPROCESS (process
);
1126 if (NILP (sentinel
))
1127 sentinel
= Qinternal_default_process_sentinel
;
1129 pset_sentinel (p
, sentinel
);
1130 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1131 pset_childp (p
, Fplist_put (p
->childp
, QCsentinel
, sentinel
));
1135 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1137 doc
: /* Return the sentinel of PROCESS.
1138 See `set-process-sentinel' for more info on sentinels. */)
1139 (register Lisp_Object process
)
1141 CHECK_PROCESS (process
);
1142 return XPROCESS (process
)->sentinel
;
1145 DEFUN ("set-process-window-size", Fset_process_window_size
,
1146 Sset_process_window_size
, 3, 3, 0,
1147 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1148 (Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1150 CHECK_PROCESS (process
);
1152 /* All known platforms store window sizes as 'unsigned short'. */
1153 CHECK_RANGED_INTEGER (height
, 0, USHRT_MAX
);
1154 CHECK_RANGED_INTEGER (width
, 0, USHRT_MAX
);
1156 if (NETCONN_P (process
)
1157 || XPROCESS (process
)->infd
< 0
1158 || (set_window_size (XPROCESS (process
)->infd
,
1159 XINT (height
), XINT (width
))
1166 DEFUN ("set-process-inherit-coding-system-flag",
1167 Fset_process_inherit_coding_system_flag
,
1168 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1169 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1170 If the second argument FLAG is non-nil, then the variable
1171 `buffer-file-coding-system' of the buffer associated with PROCESS
1172 will be bound to the value of the coding system used to decode
1175 This is useful when the coding system specified for the process buffer
1176 leaves either the character code conversion or the end-of-line conversion
1177 unspecified, or if the coding system used to decode the process output
1178 is more appropriate for saving the process buffer.
1180 Binding the variable `inherit-process-coding-system' to non-nil before
1181 starting the process is an alternative way of setting the inherit flag
1182 for the process which will run.
1184 This function returns FLAG. */)
1185 (register Lisp_Object process
, Lisp_Object flag
)
1187 CHECK_PROCESS (process
);
1188 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1192 DEFUN ("set-process-query-on-exit-flag",
1193 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1195 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1196 If the second argument FLAG is non-nil, Emacs will query the user before
1197 exiting or killing a buffer if PROCESS is running. This function
1199 (register Lisp_Object process
, Lisp_Object flag
)
1201 CHECK_PROCESS (process
);
1202 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1206 DEFUN ("process-query-on-exit-flag",
1207 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1209 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1210 (register Lisp_Object process
)
1212 CHECK_PROCESS (process
);
1213 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1216 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1218 doc
: /* Return the contact info of PROCESS; t for a real child.
1219 For a network or serial connection, the value depends on the optional
1220 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1221 SERVICE) for a network connection or (PORT SPEED) for a serial
1222 connection. If KEY is t, the complete contact information for the
1223 connection is returned, else the specific value for the keyword KEY is
1224 returned. See `make-network-process' or `make-serial-process' for a
1226 If PROCESS is a non-blocking network process that hasn't been fully
1227 set up yet, this function will block until socket setup has completed. */)
1228 (Lisp_Object process
, Lisp_Object key
)
1230 Lisp_Object contact
;
1232 CHECK_PROCESS (process
);
1233 contact
= XPROCESS (process
)->childp
;
1235 #ifdef DATAGRAM_SOCKETS
1237 if (NETCONN_P (process
))
1238 wait_for_socket_fds (process
, "process-contact");
1240 if (DATAGRAM_CONN_P (process
)
1241 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1242 contact
= Fplist_put (contact
, QCremote
,
1243 Fprocess_datagram_address (process
));
1246 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
) && !PIPECONN_P (process
))
1249 if (NILP (key
) && NETCONN_P (process
))
1250 return list2 (Fplist_get (contact
, QChost
),
1251 Fplist_get (contact
, QCservice
));
1252 if (NILP (key
) && SERIALCONN_P (process
))
1253 return list2 (Fplist_get (contact
, QCport
),
1254 Fplist_get (contact
, QCspeed
));
1255 /* FIXME: Return a meaningful value (e.g., the child end of the pipe)
1256 if the pipe process is useful for purposes other than receiving
1258 if (NILP (key
) && PIPECONN_P (process
))
1260 return Fplist_get (contact
, key
);
1263 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1265 doc
: /* Return the plist of PROCESS. */)
1266 (register Lisp_Object process
)
1268 CHECK_PROCESS (process
);
1269 return XPROCESS (process
)->plist
;
1272 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1274 doc
: /* Replace the plist of PROCESS with PLIST. Return PLIST. */)
1275 (Lisp_Object process
, Lisp_Object plist
)
1277 CHECK_PROCESS (process
);
1280 pset_plist (XPROCESS (process
), plist
);
1284 #if 0 /* Turned off because we don't currently record this info
1285 in the process. Perhaps add it. */
1286 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1287 doc
: /* Return the connection type of PROCESS.
1288 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1289 a socket connection. */)
1290 (Lisp_Object process
)
1292 return XPROCESS (process
)->type
;
1296 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1297 doc
: /* Return the connection type of PROCESS.
1298 The value is either the symbol `real', `network', or `serial'.
1299 PROCESS may be a process, a buffer, the name of a process or buffer, or
1300 nil, indicating the current buffer's process. */)
1301 (Lisp_Object process
)
1304 proc
= get_process (process
);
1305 return XPROCESS (proc
)->type
;
1308 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1310 doc
: /* Convert network ADDRESS from internal format to a string.
1311 A 4 or 5 element vector represents an IPv4 address (with port number).
1312 An 8 or 9 element vector represents an IPv6 address (with port number).
1313 If optional second argument OMIT-PORT is non-nil, don't include a port
1314 number in the string, even when present in ADDRESS.
1315 Return nil if format of ADDRESS is invalid. */)
1316 (Lisp_Object address
, Lisp_Object omit_port
)
1321 if (STRINGP (address
)) /* AF_LOCAL */
1324 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1326 register struct Lisp_Vector
*p
= XVECTOR (address
);
1327 ptrdiff_t size
= p
->header
.size
;
1328 Lisp_Object args
[10];
1332 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1334 format
= "%d.%d.%d.%d";
1339 format
= "%d.%d.%d.%d:%d";
1342 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1344 format
= "%x:%x:%x:%x:%x:%x:%x:%x";
1349 format
= "[%x:%x:%x:%x:%x:%x:%x:%x]:%d";
1355 AUTO_STRING (format_obj
, format
);
1356 args
[0] = format_obj
;
1358 for (i
= 0; i
< nargs
; i
++)
1360 if (! RANGED_INTEGERP (0, p
->contents
[i
], 65535))
1363 if (nargs
<= 5 /* IPv4 */
1364 && i
< 4 /* host, not port */
1365 && XINT (p
->contents
[i
]) > 255)
1368 args
[i
+ 1] = p
->contents
[i
];
1371 return Fformat (nargs
+ 1, args
);
1374 if (CONSP (address
))
1376 AUTO_STRING (format
, "<Family %d>");
1377 return CALLN (Fformat
, format
, Fcar (address
));
1383 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1384 doc
: /* Return a list of all processes that are Emacs sub-processes. */)
1387 return Fmapcar (Qcdr
, Vprocess_alist
);
1390 /* Starting asynchronous inferior processes. */
1392 static void start_process_unwind (Lisp_Object proc
);
1394 DEFUN ("make-process", Fmake_process
, Smake_process
, 0, MANY
, 0,
1395 doc
: /* Start a program in a subprocess. Return the process object for it.
1397 This is similar to `start-process', but arguments are specified as
1398 keyword/argument pairs. The following arguments are defined:
1400 :name NAME -- NAME is name for process. It is modified if necessary
1403 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
1404 with the process. Process output goes at end of that buffer, unless
1405 you specify an output stream or filter function to handle the output.
1406 BUFFER may be also nil, meaning that this process is not associated
1409 :command COMMAND -- COMMAND is a list starting with the program file
1410 name, followed by strings to give to the program as arguments.
1412 :coding CODING -- If CODING is a symbol, it specifies the coding
1413 system used for both reading and writing for this process. If CODING
1414 is a cons (DECODING . ENCODING), DECODING is used for reading, and
1415 ENCODING is used for writing.
1417 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
1418 the process is running. If BOOL is not given, query before exiting.
1420 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
1421 In the stopped state, a process does not accept incoming data, but you
1422 can send outgoing data. The stopped state is cleared by
1423 `continue-process' and set by `stop-process'.
1425 :connection-type TYPE -- TYPE is control type of device used to
1426 communicate with subprocesses. Values are `pipe' to use a pipe, `pty'
1427 to use a pty, or nil to use the default specified through
1428 `process-connection-type'.
1430 :filter FILTER -- Install FILTER as the process filter.
1432 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
1434 :stderr STDERR -- STDERR is either a buffer or a pipe process attached
1435 to the standard error of subprocess. Specifying this implies
1436 `:connection-type' is set to `pipe'.
1438 usage: (make-process &rest ARGS) */)
1439 (ptrdiff_t nargs
, Lisp_Object
*args
)
1441 Lisp_Object buffer
, name
, command
, program
, proc
, contact
, current_dir
, tem
;
1442 Lisp_Object xstderr
, stderrproc
;
1443 ptrdiff_t count
= SPECPDL_INDEX ();
1449 /* Save arguments for process-contact and clone-process. */
1450 contact
= Flist (nargs
, args
);
1452 buffer
= Fplist_get (contact
, QCbuffer
);
1454 buffer
= Fget_buffer_create (buffer
);
1456 /* Make sure that the child will be able to chdir to the current
1457 buffer's current directory, or its unhandled equivalent. We
1458 can't just have the child check for an error when it does the
1459 chdir, since it's in a vfork. */
1460 current_dir
= encode_current_directory ();
1462 name
= Fplist_get (contact
, QCname
);
1463 CHECK_STRING (name
);
1465 command
= Fplist_get (contact
, QCcommand
);
1466 if (CONSP (command
))
1467 program
= XCAR (command
);
1471 if (!NILP (program
))
1472 CHECK_STRING (program
);
1475 xstderr
= Fplist_get (contact
, QCstderr
);
1476 if (PROCESSP (xstderr
))
1478 if (!PIPECONN_P (xstderr
))
1479 error ("Process is not a pipe process");
1480 stderrproc
= xstderr
;
1482 else if (!NILP (xstderr
))
1484 CHECK_STRING (program
);
1485 stderrproc
= CALLN (Fmake_pipe_process
,
1487 concat2 (name
, build_string (" stderr")),
1489 Fget_buffer_create (xstderr
));
1492 proc
= make_process (name
);
1493 /* If an error occurs and we can't start the process, we want to
1494 remove it from the process list. This means that each error
1495 check in create_process doesn't need to call remove_process
1496 itself; it's all taken care of here. */
1497 record_unwind_protect (start_process_unwind
, proc
);
1499 pset_childp (XPROCESS (proc
), Qt
);
1500 pset_plist (XPROCESS (proc
), Qnil
);
1501 pset_type (XPROCESS (proc
), Qreal
);
1502 pset_buffer (XPROCESS (proc
), buffer
);
1503 pset_sentinel (XPROCESS (proc
), Fplist_get (contact
, QCsentinel
));
1504 pset_filter (XPROCESS (proc
), Fplist_get (contact
, QCfilter
));
1505 pset_command (XPROCESS (proc
), Fcopy_sequence (command
));
1507 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
1508 XPROCESS (proc
)->kill_without_query
= 1;
1509 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
1510 pset_command (XPROCESS (proc
), Qt
);
1512 tem
= Fplist_get (contact
, QCconnection_type
);
1514 XPROCESS (proc
)->pty_flag
= true;
1515 else if (EQ (tem
, Qpipe
))
1516 XPROCESS (proc
)->pty_flag
= false;
1517 else if (NILP (tem
))
1518 XPROCESS (proc
)->pty_flag
= !NILP (Vprocess_connection_type
);
1520 report_file_error ("Unknown connection type", tem
);
1522 if (!NILP (stderrproc
))
1524 pset_stderrproc (XPROCESS (proc
), stderrproc
);
1526 XPROCESS (proc
)->pty_flag
= false;
1530 /* AKA GNUTLS_INITSTAGE(proc). */
1531 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1532 pset_gnutls_cred_type (XPROCESS (proc
), Qnil
);
1535 XPROCESS (proc
)->adaptive_read_buffering
1536 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1537 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1539 /* Make the process marker point into the process buffer (if any). */
1540 if (BUFFERP (buffer
))
1541 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1542 BUF_ZV (XBUFFER (buffer
)),
1543 BUF_ZV_BYTE (XBUFFER (buffer
)));
1546 /* Decide coding systems for communicating with the process. Here
1547 we don't setup the structure coding_system nor pay attention to
1548 unibyte mode. They are done in create_process. */
1550 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1551 Lisp_Object coding_systems
= Qt
;
1552 Lisp_Object val
, *args2
;
1554 tem
= Fplist_get (contact
, QCcoding
);
1562 val
= Vcoding_system_for_read
;
1565 ptrdiff_t nargs2
= 3 + XINT (Flength (command
));
1567 SAFE_ALLOCA_LISP (args2
, nargs2
);
1569 args2
[i
++] = Qstart_process
;
1571 args2
[i
++] = buffer
;
1572 for (tem2
= command
; CONSP (tem2
); tem2
= XCDR (tem2
))
1573 args2
[i
++] = XCAR (tem2
);
1574 if (!NILP (program
))
1575 coding_systems
= Ffind_operation_coding_system (nargs2
, args2
);
1576 if (CONSP (coding_systems
))
1577 val
= XCAR (coding_systems
);
1578 else if (CONSP (Vdefault_process_coding_system
))
1579 val
= XCAR (Vdefault_process_coding_system
);
1581 pset_decode_coding_system (XPROCESS (proc
), val
);
1590 val
= Vcoding_system_for_write
;
1593 if (EQ (coding_systems
, Qt
))
1595 ptrdiff_t nargs2
= 3 + XINT (Flength (command
));
1597 SAFE_ALLOCA_LISP (args2
, nargs2
);
1599 args2
[i
++] = Qstart_process
;
1601 args2
[i
++] = buffer
;
1602 for (tem2
= command
; CONSP (tem2
); tem2
= XCDR (tem2
))
1603 args2
[i
++] = XCAR (tem2
);
1604 if (!NILP (program
))
1605 coding_systems
= Ffind_operation_coding_system (nargs2
, args2
);
1607 if (CONSP (coding_systems
))
1608 val
= XCDR (coding_systems
);
1609 else if (CONSP (Vdefault_process_coding_system
))
1610 val
= XCDR (Vdefault_process_coding_system
);
1612 pset_encode_coding_system (XPROCESS (proc
), val
);
1613 /* Note: At this moment, the above coding system may leave
1614 text-conversion or eol-conversion unspecified. They will be
1615 decided after we read output from the process and decode it by
1616 some coding system, or just before we actually send a text to
1621 pset_decoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1622 XPROCESS (proc
)->decoding_carryover
= 0;
1623 pset_encoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1625 XPROCESS (proc
)->inherit_coding_system_flag
1626 = !(NILP (buffer
) || !inherit_process_coding_system
);
1628 if (!NILP (program
))
1630 Lisp_Object program_args
= XCDR (command
);
1632 /* If program file name is not absolute, search our path for it.
1633 Put the name we will really use in TEM. */
1634 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1635 && !(SCHARS (program
) > 1
1636 && IS_DEVICE_SEP (SREF (program
, 1))))
1639 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
,
1640 make_number (X_OK
), false);
1642 report_file_error ("Searching for program", program
);
1643 tem
= Fexpand_file_name (tem
, Qnil
);
1647 if (!NILP (Ffile_directory_p (program
)))
1648 error ("Specified program for new process is a directory");
1652 /* Remove "/:" from TEM. */
1653 tem
= remove_slash_colon (tem
);
1655 Lisp_Object arg_encoding
= Qnil
;
1657 /* Encode the file name and put it in NEW_ARGV.
1658 That's where the child will use it to execute the program. */
1659 tem
= list1 (ENCODE_FILE (tem
));
1660 ptrdiff_t new_argc
= 1;
1662 /* Here we encode arguments by the coding system used for sending
1663 data to the process. We don't support using different coding
1664 systems for encoding arguments and for encoding data sent to the
1667 for (Lisp_Object tem2
= program_args
; CONSP (tem2
); tem2
= XCDR (tem2
))
1669 Lisp_Object arg
= XCAR (tem2
);
1671 if (STRING_MULTIBYTE (arg
))
1673 if (NILP (arg_encoding
))
1674 arg_encoding
= (complement_process_encoding_system
1675 (XPROCESS (proc
)->encode_coding_system
));
1676 arg
= code_convert_string_norecord (arg
, arg_encoding
, 1);
1678 tem
= Fcons (arg
, tem
);
1682 /* Now that everything is encoded we can collect the strings into
1685 SAFE_NALLOCA (new_argv
, 1, new_argc
+ 1);
1686 new_argv
[new_argc
] = 0;
1688 for (ptrdiff_t i
= new_argc
- 1; i
>= 0; i
--)
1690 new_argv
[i
] = SSDATA (XCAR (tem
));
1694 create_process (proc
, new_argv
, current_dir
);
1700 return unbind_to (count
, proc
);
1703 /* This function is the unwind_protect form for Fstart_process. If
1704 PROC doesn't have its pid set, then we know someone has signaled
1705 an error and the process wasn't started successfully, so we should
1706 remove it from the process list. */
1708 start_process_unwind (Lisp_Object proc
)
1710 if (!PROCESSP (proc
))
1713 /* Was PROC started successfully?
1714 -2 is used for a pty with no process, eg for gdb. */
1715 if (XPROCESS (proc
)->pid
<= 0 && XPROCESS (proc
)->pid
!= -2)
1716 remove_process (proc
);
1719 /* If *FD_ADDR is nonnegative, close it, and mark it as closed. */
1722 close_process_fd (int *fd_addr
)
1732 /* Indexes of file descriptors in open_fds. */
1735 /* The pipe from Emacs to its subprocess. */
1737 WRITE_TO_SUBPROCESS
,
1739 /* The main pipe from the subprocess to Emacs. */
1740 READ_FROM_SUBPROCESS
,
1743 /* The pipe from the subprocess to Emacs that is closed when the
1744 subprocess execs. */
1745 READ_FROM_EXEC_MONITOR
,
1749 verify (PROCESS_OPEN_FDS
== EXEC_MONITOR_OUTPUT
+ 1);
1752 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1754 struct Lisp_Process
*p
= XPROCESS (process
);
1755 int inchannel
, outchannel
;
1758 int forkin
, forkout
, forkerr
= -1;
1760 char pty_name
[PTY_NAME_SIZE
];
1761 Lisp_Object lisp_pty_name
= Qnil
;
1764 inchannel
= outchannel
= -1;
1767 outchannel
= inchannel
= allocate_pty (pty_name
);
1771 p
->open_fd
[READ_FROM_SUBPROCESS
] = inchannel
;
1772 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1773 /* On most USG systems it does not work to open the pty's tty here,
1774 then close it and reopen it in the child. */
1775 /* Don't let this terminal become our controlling terminal
1776 (in case we don't have one). */
1777 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1779 report_file_error ("Opening pty", Qnil
);
1780 p
->open_fd
[SUBPROCESS_STDIN
] = forkin
;
1782 forkin
= forkout
= -1;
1783 #endif /* not USG, or USG_SUBTTY_WORKS */
1785 lisp_pty_name
= build_string (pty_name
);
1789 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
1790 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
1791 report_file_error ("Creating pipe", Qnil
);
1792 forkin
= p
->open_fd
[SUBPROCESS_STDIN
];
1793 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
1794 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
1795 forkout
= p
->open_fd
[SUBPROCESS_STDOUT
];
1797 if (!NILP (p
->stderrproc
))
1799 struct Lisp_Process
*pp
= XPROCESS (p
->stderrproc
);
1801 forkerr
= pp
->open_fd
[SUBPROCESS_STDOUT
];
1803 /* Close unnecessary file descriptors. */
1804 close_process_fd (&pp
->open_fd
[WRITE_TO_SUBPROCESS
]);
1805 close_process_fd (&pp
->open_fd
[SUBPROCESS_STDIN
]);
1810 if (emacs_pipe (p
->open_fd
+ READ_FROM_EXEC_MONITOR
) != 0)
1811 report_file_error ("Creating pipe", Qnil
);
1814 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1815 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1817 /* Record this as an active process, with its channels. */
1818 chan_process
[inchannel
] = process
;
1819 p
->infd
= inchannel
;
1820 p
->outfd
= outchannel
;
1822 /* Previously we recorded the tty descriptor used in the subprocess.
1823 It was only used for getting the foreground tty process, so now
1824 we just reopen the device (see emacs_get_tty_pgrp) as this is
1825 more portable (see USG_SUBTTY_WORKS above). */
1827 p
->pty_flag
= pty_flag
;
1828 pset_status (p
, Qrun
);
1830 if (!EQ (p
->command
, Qt
))
1832 FD_SET (inchannel
, &input_wait_mask
);
1833 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1836 if (inchannel
> max_process_desc
)
1837 max_process_desc
= inchannel
;
1839 /* This may signal an error. */
1840 setup_process_coding_systems (process
);
1843 block_child_signal (&oldset
);
1846 /* vfork, and prevent local vars from being clobbered by the vfork. */
1847 Lisp_Object
volatile current_dir_volatile
= current_dir
;
1848 Lisp_Object
volatile lisp_pty_name_volatile
= lisp_pty_name
;
1849 char **volatile new_argv_volatile
= new_argv
;
1850 int volatile forkin_volatile
= forkin
;
1851 int volatile forkout_volatile
= forkout
;
1852 int volatile forkerr_volatile
= forkerr
;
1853 struct Lisp_Process
*p_volatile
= p
;
1857 current_dir
= current_dir_volatile
;
1858 lisp_pty_name
= lisp_pty_name_volatile
;
1859 new_argv
= new_argv_volatile
;
1860 forkin
= forkin_volatile
;
1861 forkout
= forkout_volatile
;
1862 forkerr
= forkerr_volatile
;
1865 pty_flag
= p
->pty_flag
;
1868 #endif /* not WINDOWSNT */
1870 /* Make the pty be the controlling terminal of the process. */
1872 /* First, disconnect its current controlling terminal. */
1873 /* We tried doing setsid only if pty_flag, but it caused
1874 process_set_signal to fail on SGI when using a pipe. */
1876 /* Make the pty's terminal the controlling terminal. */
1877 if (pty_flag
&& forkin
>= 0)
1880 /* We ignore the return value
1881 because faith@cs.unc.edu says that is necessary on Linux. */
1882 ioctl (forkin
, TIOCSCTTY
, 0);
1885 #if defined (LDISC1)
1886 if (pty_flag
&& forkin
>= 0)
1889 tcgetattr (forkin
, &t
);
1891 if (tcsetattr (forkin
, TCSANOW
, &t
) < 0)
1892 emacs_perror ("create_process/tcsetattr LDISC1");
1895 #if defined (NTTYDISC) && defined (TIOCSETD)
1896 if (pty_flag
&& forkin
>= 0)
1898 /* Use new line discipline. */
1899 int ldisc
= NTTYDISC
;
1900 ioctl (forkin
, TIOCSETD
, &ldisc
);
1905 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1906 can do TIOCSPGRP only to the process's controlling tty. */
1909 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1910 I can't test it since I don't have 4.3. */
1911 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1914 ioctl (j
, TIOCNOTTY
, 0);
1918 #endif /* TIOCNOTTY */
1920 #if !defined (DONT_REOPEN_PTY)
1921 /*** There is a suggestion that this ought to be a
1922 conditional on TIOCSPGRP, or !defined TIOCSCTTY.
1923 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1924 that system does seem to need this code, even though
1925 both TIOCSCTTY is defined. */
1926 /* Now close the pty (if we had it open) and reopen it.
1927 This makes the pty the controlling terminal of the subprocess. */
1931 /* I wonder if emacs_close (emacs_open (SSDATA (lisp_pty_name), ...))
1934 emacs_close (forkin
);
1935 forkout
= forkin
= emacs_open (SSDATA (lisp_pty_name
), O_RDWR
, 0);
1939 emacs_perror (SSDATA (lisp_pty_name
));
1940 _exit (EXIT_CANCELED
);
1944 #endif /* not DONT_REOPEN_PTY */
1946 #ifdef SETUP_SLAVE_PTY
1951 #endif /* SETUP_SLAVE_PTY */
1952 #endif /* HAVE_PTYS */
1954 signal (SIGINT
, SIG_DFL
);
1955 signal (SIGQUIT
, SIG_DFL
);
1957 signal (SIGPROF
, SIG_DFL
);
1960 /* Emacs ignores SIGPIPE, but the child should not. */
1961 signal (SIGPIPE
, SIG_DFL
);
1963 /* Stop blocking SIGCHLD in the child. */
1964 unblock_child_signal (&oldset
);
1967 child_setup_tty (forkout
);
1972 pid
= child_setup (forkin
, forkout
, forkerr
, new_argv
, 1, current_dir
);
1973 #else /* not WINDOWSNT */
1974 child_setup (forkin
, forkout
, forkerr
, new_argv
, 1, current_dir
);
1975 #endif /* not WINDOWSNT */
1978 /* Back in the parent process. */
1980 vfork_errno
= errno
;
1985 /* Stop blocking in the parent. */
1986 unblock_child_signal (&oldset
);
1990 report_file_errno ("Doing vfork", Qnil
, vfork_errno
);
1993 /* vfork succeeded. */
1995 /* Close the pipe ends that the child uses, or the child's pty. */
1996 close_process_fd (&p
->open_fd
[SUBPROCESS_STDIN
]);
1997 close_process_fd (&p
->open_fd
[SUBPROCESS_STDOUT
]);
2000 register_child (pid
, inchannel
);
2001 #endif /* WINDOWSNT */
2003 pset_tty_name (p
, lisp_pty_name
);
2006 /* Wait for child_setup to complete in case that vfork is
2007 actually defined as fork. The descriptor
2008 XPROCESS (proc)->open_fd[EXEC_MONITOR_OUTPUT]
2009 of a pipe is closed at the child side either by close-on-exec
2010 on successful execve or the _exit call in child_setup. */
2014 close_process_fd (&p
->open_fd
[EXEC_MONITOR_OUTPUT
]);
2015 emacs_read (p
->open_fd
[READ_FROM_EXEC_MONITOR
], &dummy
, 1);
2016 close_process_fd (&p
->open_fd
[READ_FROM_EXEC_MONITOR
]);
2019 if (!NILP (p
->stderrproc
))
2021 struct Lisp_Process
*pp
= XPROCESS (p
->stderrproc
);
2022 close_process_fd (&pp
->open_fd
[SUBPROCESS_STDOUT
]);
2028 create_pty (Lisp_Object process
)
2030 struct Lisp_Process
*p
= XPROCESS (process
);
2031 char pty_name
[PTY_NAME_SIZE
];
2032 int pty_fd
= !p
->pty_flag
? -1 : allocate_pty (pty_name
);
2036 p
->open_fd
[SUBPROCESS_STDIN
] = pty_fd
;
2037 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2038 /* On most USG systems it does not work to open the pty's tty here,
2039 then close it and reopen it in the child. */
2040 /* Don't let this terminal become our controlling terminal
2041 (in case we don't have one). */
2042 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2044 report_file_error ("Opening pty", Qnil
);
2045 p
->open_fd
[WRITE_TO_SUBPROCESS
] = forkout
;
2046 #if defined (DONT_REOPEN_PTY)
2047 /* In the case that vfork is defined as fork, the parent process
2048 (Emacs) may send some data before the child process completes
2049 tty options setup. So we setup tty before forking. */
2050 child_setup_tty (forkout
);
2051 #endif /* DONT_REOPEN_PTY */
2052 #endif /* not USG, or USG_SUBTTY_WORKS */
2054 fcntl (pty_fd
, F_SETFL
, O_NONBLOCK
);
2056 /* Record this as an active process, with its channels.
2057 As a result, child_setup will close Emacs's side of the pipes. */
2058 chan_process
[pty_fd
] = process
;
2062 /* Previously we recorded the tty descriptor used in the subprocess.
2063 It was only used for getting the foreground tty process, so now
2064 we just reopen the device (see emacs_get_tty_pgrp) as this is
2065 more portable (see USG_SUBTTY_WORKS above). */
2068 pset_status (p
, Qrun
);
2069 setup_process_coding_systems (process
);
2071 FD_SET (pty_fd
, &input_wait_mask
);
2072 FD_SET (pty_fd
, &non_keyboard_wait_mask
);
2073 if (pty_fd
> max_process_desc
)
2074 max_process_desc
= pty_fd
;
2076 pset_tty_name (p
, build_string (pty_name
));
2082 DEFUN ("make-pipe-process", Fmake_pipe_process
, Smake_pipe_process
,
2084 doc
: /* Create and return a bidirectional pipe process.
2086 In Emacs, pipes are represented by process objects, so input and
2087 output work as for subprocesses, and `delete-process' closes a pipe.
2088 However, a pipe process has no process id, it cannot be signaled,
2089 and the status codes are different from normal processes.
2091 Arguments are specified as keyword/argument pairs. The following
2092 arguments are defined:
2094 :name NAME -- NAME is the name of the process. It is modified if necessary to make it unique.
2096 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2097 with the process. Process output goes at the end of that buffer,
2098 unless you specify an output stream or filter function to handle the
2099 output. If BUFFER is not given, the value of NAME is used.
2101 :coding CODING -- If CODING is a symbol, it specifies the coding
2102 system used for both reading and writing for this process. If CODING
2103 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2104 ENCODING is used for writing.
2106 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2107 the process is running. If BOOL is not given, query before exiting.
2109 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2110 In the stopped state, a pipe process does not accept incoming data,
2111 but you can send outgoing data. The stopped state is cleared by
2112 `continue-process' and set by `stop-process'.
2114 :filter FILTER -- Install FILTER as the process filter.
2116 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2118 usage: (make-pipe-process &rest ARGS) */)
2119 (ptrdiff_t nargs
, Lisp_Object
*args
)
2121 Lisp_Object proc
, contact
;
2122 struct Lisp_Process
*p
;
2123 Lisp_Object name
, buffer
;
2125 ptrdiff_t specpdl_count
;
2126 int inchannel
, outchannel
;
2131 contact
= Flist (nargs
, args
);
2133 name
= Fplist_get (contact
, QCname
);
2134 CHECK_STRING (name
);
2135 proc
= make_process (name
);
2136 specpdl_count
= SPECPDL_INDEX ();
2137 record_unwind_protect (remove_process
, proc
);
2138 p
= XPROCESS (proc
);
2140 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
2141 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
2142 report_file_error ("Creating pipe", Qnil
);
2143 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
2144 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
2146 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2147 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2150 register_aux_fd (inchannel
);
2153 /* Record this as an active process, with its channels. */
2154 chan_process
[inchannel
] = proc
;
2155 p
->infd
= inchannel
;
2156 p
->outfd
= outchannel
;
2158 if (inchannel
> max_process_desc
)
2159 max_process_desc
= inchannel
;
2161 buffer
= Fplist_get (contact
, QCbuffer
);
2164 buffer
= Fget_buffer_create (buffer
);
2165 pset_buffer (p
, buffer
);
2167 pset_childp (p
, contact
);
2168 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2169 pset_type (p
, Qpipe
);
2170 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2171 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2173 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2174 p
->kill_without_query
= 1;
2175 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2176 pset_command (p
, Qt
);
2177 eassert (! p
->pty_flag
);
2179 if (!EQ (p
->command
, Qt
))
2181 FD_SET (inchannel
, &input_wait_mask
);
2182 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2184 p
->adaptive_read_buffering
2185 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
2186 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
2188 /* Make the process marker point into the process buffer (if any). */
2189 if (BUFFERP (buffer
))
2190 set_marker_both (p
->mark
, buffer
,
2191 BUF_ZV (XBUFFER (buffer
)),
2192 BUF_ZV_BYTE (XBUFFER (buffer
)));
2195 /* Setup coding systems for communicating with the network stream. */
2197 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
2198 Lisp_Object coding_systems
= Qt
;
2201 tem
= Fplist_get (contact
, QCcoding
);
2209 else if (!NILP (Vcoding_system_for_read
))
2210 val
= Vcoding_system_for_read
;
2211 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2212 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2213 /* We dare not decode end-of-line format by setting VAL to
2214 Qraw_text, because the existing Emacs Lisp libraries
2215 assume that they receive bare code including a sequence of
2220 if (CONSP (coding_systems
))
2221 val
= XCAR (coding_systems
);
2222 else if (CONSP (Vdefault_process_coding_system
))
2223 val
= XCAR (Vdefault_process_coding_system
);
2227 pset_decode_coding_system (p
, val
);
2235 else if (!NILP (Vcoding_system_for_write
))
2236 val
= Vcoding_system_for_write
;
2237 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
2241 if (CONSP (coding_systems
))
2242 val
= XCDR (coding_systems
);
2243 else if (CONSP (Vdefault_process_coding_system
))
2244 val
= XCDR (Vdefault_process_coding_system
);
2248 pset_encode_coding_system (p
, val
);
2250 /* This may signal an error. */
2251 setup_process_coding_systems (proc
);
2253 specpdl_ptr
= specpdl
+ specpdl_count
;
2259 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2260 The address family of sa is not included in the result. */
2263 conv_sockaddr_to_lisp (struct sockaddr
*sa
, ptrdiff_t len
)
2265 Lisp_Object address
;
2268 struct Lisp_Vector
*p
;
2270 /* Workaround for a bug in getsockname on BSD: Names bound to
2271 sockets in the UNIX domain are inaccessible; getsockname returns
2272 a zero length name. */
2273 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2274 return empty_unibyte_string
;
2276 switch (sa
->sa_family
)
2280 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2281 len
= sizeof (sin
->sin_addr
) + 1;
2282 address
= Fmake_vector (make_number (len
), Qnil
);
2283 p
= XVECTOR (address
);
2284 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2285 cp
= (unsigned char *) &sin
->sin_addr
;
2291 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2292 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2293 len
= sizeof (sin6
->sin6_addr
) / 2 + 1;
2294 address
= Fmake_vector (make_number (len
), Qnil
);
2295 p
= XVECTOR (address
);
2296 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2297 for (i
= 0; i
< len
; i
++)
2298 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2302 #ifdef HAVE_LOCAL_SOCKETS
2305 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2306 ptrdiff_t name_length
= len
- offsetof (struct sockaddr_un
, sun_path
);
2307 /* If the first byte is NUL, the name is a Linux abstract
2308 socket name, and the name can contain embedded NULs. If
2309 it's not, we have a NUL-terminated string. Be careful not
2310 to walk past the end of the object looking for the name
2311 terminator, however. */
2312 if (name_length
> 0 && sockun
->sun_path
[0] != '\0')
2314 const char *terminator
2315 = memchr (sockun
->sun_path
, '\0', name_length
);
2318 name_length
= terminator
- (const char *) sockun
->sun_path
;
2321 return make_unibyte_string (sockun
->sun_path
, name_length
);
2325 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2326 address
= Fcons (make_number (sa
->sa_family
),
2327 Fmake_vector (make_number (len
), Qnil
));
2328 p
= XVECTOR (XCDR (address
));
2329 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2335 p
->contents
[i
++] = make_number (*cp
++);
2341 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2344 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2346 struct Lisp_Vector
*p
;
2348 if (VECTORP (address
))
2350 p
= XVECTOR (address
);
2351 if (p
->header
.size
== 5)
2354 return sizeof (struct sockaddr_in
);
2357 else if (p
->header
.size
== 9)
2359 *familyp
= AF_INET6
;
2360 return sizeof (struct sockaddr_in6
);
2364 #ifdef HAVE_LOCAL_SOCKETS
2365 else if (STRINGP (address
))
2367 *familyp
= AF_LOCAL
;
2368 return sizeof (struct sockaddr_un
);
2371 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2372 && VECTORP (XCDR (address
)))
2374 struct sockaddr
*sa
;
2375 p
= XVECTOR (XCDR (address
));
2376 if (MAX_ALLOCA
- sizeof sa
->sa_family
< p
->header
.size
)
2378 *familyp
= XINT (XCAR (address
));
2379 return p
->header
.size
+ sizeof (sa
->sa_family
);
2384 /* Convert an address object (vector or string) to an internal sockaddr.
2386 The address format has been basically validated by
2387 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2388 it could have come from user data. So if FAMILY is not valid,
2389 we return after zeroing *SA. */
2392 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2394 register struct Lisp_Vector
*p
;
2395 register unsigned char *cp
= NULL
;
2399 memset (sa
, 0, len
);
2401 if (VECTORP (address
))
2403 p
= XVECTOR (address
);
2404 if (family
== AF_INET
)
2406 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2407 len
= sizeof (sin
->sin_addr
) + 1;
2408 hostport
= XINT (p
->contents
[--len
]);
2409 sin
->sin_port
= htons (hostport
);
2410 cp
= (unsigned char *)&sin
->sin_addr
;
2411 sa
->sa_family
= family
;
2414 else if (family
== AF_INET6
)
2416 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2417 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2418 len
= sizeof (sin6
->sin6_addr
) / 2 + 1;
2419 hostport
= XINT (p
->contents
[--len
]);
2420 sin6
->sin6_port
= htons (hostport
);
2421 for (i
= 0; i
< len
; i
++)
2422 if (INTEGERP (p
->contents
[i
]))
2424 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2427 sa
->sa_family
= family
;
2434 else if (STRINGP (address
))
2436 #ifdef HAVE_LOCAL_SOCKETS
2437 if (family
== AF_LOCAL
)
2439 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2440 cp
= SDATA (address
);
2441 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2442 sockun
->sun_path
[i
] = *cp
++;
2443 sa
->sa_family
= family
;
2450 p
= XVECTOR (XCDR (address
));
2451 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2454 for (i
= 0; i
< len
; i
++)
2455 if (INTEGERP (p
->contents
[i
]))
2456 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2459 #ifdef DATAGRAM_SOCKETS
2460 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2462 doc
: /* Get the current datagram address associated with PROCESS.
2463 If PROCESS is a non-blocking network process that hasn't been fully
2464 set up yet, this function will block until socket setup has completed. */)
2465 (Lisp_Object process
)
2469 CHECK_PROCESS (process
);
2471 if (NETCONN_P (process
))
2472 wait_for_socket_fds (process
, "process-datagram-address");
2474 if (!DATAGRAM_CONN_P (process
))
2477 channel
= XPROCESS (process
)->infd
;
2478 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2479 datagram_address
[channel
].len
);
2482 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2484 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2485 Return nil upon error setting address, ADDRESS otherwise.
2487 If PROCESS is a non-blocking network process that hasn't been fully
2488 set up yet, this function will block until socket setup has completed. */)
2489 (Lisp_Object process
, Lisp_Object address
)
2495 CHECK_PROCESS (process
);
2497 if (NETCONN_P (process
))
2498 wait_for_socket_fds (process
, "set-process-datagram-address");
2500 if (!DATAGRAM_CONN_P (process
))
2503 channel
= XPROCESS (process
)->infd
;
2505 len
= get_lisp_to_sockaddr_size (address
, &family
);
2506 if (len
== 0 || datagram_address
[channel
].len
!= len
)
2508 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2514 static const struct socket_options
{
2515 /* The name of this option. Should be lowercase version of option
2516 name without SO_ prefix. */
2518 /* Option level SOL_... */
2520 /* Option number SO_... */
2522 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2523 enum { OPIX_NONE
= 0, OPIX_MISC
= 1, OPIX_REUSEADDR
= 2 } optbit
;
2524 } socket_options
[] =
2526 #ifdef SO_BINDTODEVICE
2527 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2530 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2533 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2536 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2539 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2542 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2545 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2548 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2550 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2553 /* Set option OPT to value VAL on socket S.
2555 Return (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2556 Signals an error if setting a known option fails.
2560 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2563 const struct socket_options
*sopt
;
2568 name
= SSDATA (SYMBOL_NAME (opt
));
2569 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2570 if (strcmp (name
, sopt
->name
) == 0)
2573 switch (sopt
->opttype
)
2578 optval
= NILP (val
) ? 0 : 1;
2579 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2580 &optval
, sizeof (optval
));
2587 if (TYPE_RANGED_INTEGERP (int, val
))
2588 optval
= XINT (val
);
2590 error ("Bad option value for %s", name
);
2591 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2592 &optval
, sizeof (optval
));
2596 #ifdef SO_BINDTODEVICE
2599 char devname
[IFNAMSIZ
+ 1];
2601 /* This is broken, at least in the Linux 2.4 kernel.
2602 To unbind, the arg must be a zero integer, not the empty string.
2603 This should work on all systems. KFS. 2003-09-23. */
2604 memset (devname
, 0, sizeof devname
);
2607 char *arg
= SSDATA (val
);
2608 int len
= min (strlen (arg
), IFNAMSIZ
);
2609 memcpy (devname
, arg
, len
);
2611 else if (!NILP (val
))
2612 error ("Bad option value for %s", name
);
2613 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2622 struct linger linger
;
2625 linger
.l_linger
= 0;
2626 if (TYPE_RANGED_INTEGERP (int, val
))
2627 linger
.l_linger
= XINT (val
);
2629 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2630 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2631 &linger
, sizeof (linger
));
2642 int setsockopt_errno
= errno
;
2643 report_file_errno ("Cannot set network option", list2 (opt
, val
),
2647 return (1 << sopt
->optbit
);
2651 DEFUN ("set-network-process-option",
2652 Fset_network_process_option
, Sset_network_process_option
,
2654 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2655 See `make-network-process' for a list of options and values.
2656 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2657 OPTION is not a supported option, return nil instead; otherwise return t.
2659 If PROCESS is a non-blocking network process that hasn't been fully
2660 set up yet, this function will block until socket setup has completed. */)
2661 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2664 struct Lisp_Process
*p
;
2666 CHECK_PROCESS (process
);
2667 p
= XPROCESS (process
);
2668 if (!NETCONN1_P (p
))
2669 error ("Process is not a network process");
2671 wait_for_socket_fds (process
, "set-network-process-option");
2675 error ("Process is not running");
2677 if (set_socket_option (s
, option
, value
))
2679 pset_childp (p
, Fplist_put (p
->childp
, option
, value
));
2683 if (NILP (no_error
))
2684 error ("Unknown or unsupported option");
2690 DEFUN ("serial-process-configure",
2691 Fserial_process_configure
,
2692 Sserial_process_configure
,
2694 doc
: /* Configure speed, bytesize, etc. of a serial process.
2696 Arguments are specified as keyword/argument pairs. Attributes that
2697 are not given are re-initialized from the process's current
2698 configuration (available via the function `process-contact') or set to
2699 reasonable default values. The following arguments are defined:
2705 -- Any of these arguments can be given to identify the process that is
2706 to be configured. If none of these arguments is given, the current
2707 buffer's process is used.
2709 :speed SPEED -- SPEED is the speed of the serial port in bits per
2710 second, also called baud rate. Any value can be given for SPEED, but
2711 most serial ports work only at a few defined values between 1200 and
2712 115200, with 9600 being the most common value. If SPEED is nil, the
2713 serial port is not configured any further, i.e., all other arguments
2714 are ignored. This may be useful for special serial ports such as
2715 Bluetooth-to-serial converters which can only be configured through AT
2716 commands. A value of nil for SPEED can be used only when passed
2717 through `make-serial-process' or `serial-term'.
2719 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2720 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2722 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2723 `odd' (use odd parity), or the symbol `even' (use even parity). If
2724 PARITY is not given, no parity is used.
2726 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2727 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2728 is not given or nil, 1 stopbit is used.
2730 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2731 flowcontrol to be used, which is either nil (don't use flowcontrol),
2732 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2733 (use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2734 flowcontrol is used.
2736 `serial-process-configure' is called by `make-serial-process' for the
2737 initial configuration of the serial port.
2741 (serial-process-configure :process "/dev/ttyS0" :speed 1200)
2743 (serial-process-configure
2744 :buffer "COM1" :stopbits 1 :parity \\='odd :flowcontrol \\='hw)
2746 (serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2748 usage: (serial-process-configure &rest ARGS) */)
2749 (ptrdiff_t nargs
, Lisp_Object
*args
)
2751 struct Lisp_Process
*p
;
2752 Lisp_Object contact
= Qnil
;
2753 Lisp_Object proc
= Qnil
;
2755 contact
= Flist (nargs
, args
);
2757 proc
= Fplist_get (contact
, QCprocess
);
2759 proc
= Fplist_get (contact
, QCname
);
2761 proc
= Fplist_get (contact
, QCbuffer
);
2763 proc
= Fplist_get (contact
, QCport
);
2764 proc
= get_process (proc
);
2765 p
= XPROCESS (proc
);
2766 if (!EQ (p
->type
, Qserial
))
2767 error ("Not a serial process");
2769 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2772 serial_configure (p
, contact
);
2776 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2778 doc
: /* Create and return a serial port process.
2780 In Emacs, serial port connections are represented by process objects,
2781 so input and output work as for subprocesses, and `delete-process'
2782 closes a serial port connection. However, a serial process has no
2783 process id, it cannot be signaled, and the status codes are different
2784 from normal processes.
2786 `make-serial-process' creates a process and a buffer, on which you
2787 probably want to use `process-send-string'. Try \\[serial-term] for
2788 an interactive terminal. See below for examples.
2790 Arguments are specified as keyword/argument pairs. The following
2791 arguments are defined:
2793 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2794 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2795 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2796 the backslashes in strings).
2798 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2799 which this function calls.
2801 :name NAME -- NAME is the name of the process. If NAME is not given,
2802 the value of PORT is used.
2804 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2805 with the process. Process output goes at the end of that buffer,
2806 unless you specify an output stream or filter function to handle the
2807 output. If BUFFER is not given, the value of NAME is used.
2809 :coding CODING -- If CODING is a symbol, it specifies the coding
2810 system used for both reading and writing for this process. If CODING
2811 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2812 ENCODING is used for writing.
2814 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2815 the process is running. If BOOL is not given, query before exiting.
2817 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2818 In the stopped state, a serial process does not accept incoming data,
2819 but you can send outgoing data. The stopped state is cleared by
2820 `continue-process' and set by `stop-process'.
2822 :filter FILTER -- Install FILTER as the process filter.
2824 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2826 :plist PLIST -- Install PLIST as the initial plist of the process.
2832 -- This function calls `serial-process-configure' to handle these
2835 The original argument list, possibly modified by later configuration,
2836 is available via the function `process-contact'.
2840 (make-serial-process :port "/dev/ttyS0" :speed 9600)
2842 (make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2844 (make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity \\='odd)
2846 (make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2848 usage: (make-serial-process &rest ARGS) */)
2849 (ptrdiff_t nargs
, Lisp_Object
*args
)
2852 Lisp_Object proc
, contact
, port
;
2853 struct Lisp_Process
*p
;
2854 Lisp_Object name
, buffer
;
2855 Lisp_Object tem
, val
;
2856 ptrdiff_t specpdl_count
;
2861 contact
= Flist (nargs
, args
);
2863 port
= Fplist_get (contact
, QCport
);
2865 error ("No port specified");
2866 CHECK_STRING (port
);
2868 if (NILP (Fplist_member (contact
, QCspeed
)))
2869 error (":speed not specified");
2870 if (!NILP (Fplist_get (contact
, QCspeed
)))
2871 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2873 name
= Fplist_get (contact
, QCname
);
2876 CHECK_STRING (name
);
2877 proc
= make_process (name
);
2878 specpdl_count
= SPECPDL_INDEX ();
2879 record_unwind_protect (remove_process
, proc
);
2880 p
= XPROCESS (proc
);
2882 fd
= serial_open (port
);
2883 p
->open_fd
[SUBPROCESS_STDIN
] = fd
;
2886 if (fd
> max_process_desc
)
2887 max_process_desc
= fd
;
2888 chan_process
[fd
] = proc
;
2890 buffer
= Fplist_get (contact
, QCbuffer
);
2893 buffer
= Fget_buffer_create (buffer
);
2894 pset_buffer (p
, buffer
);
2896 pset_childp (p
, contact
);
2897 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2898 pset_type (p
, Qserial
);
2899 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2900 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2902 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2903 p
->kill_without_query
= 1;
2904 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2905 pset_command (p
, Qt
);
2906 eassert (! p
->pty_flag
);
2908 if (!EQ (p
->command
, Qt
))
2910 FD_SET (fd
, &input_wait_mask
);
2911 FD_SET (fd
, &non_keyboard_wait_mask
);
2914 if (BUFFERP (buffer
))
2916 set_marker_both (p
->mark
, buffer
,
2917 BUF_ZV (XBUFFER (buffer
)),
2918 BUF_ZV_BYTE (XBUFFER (buffer
)));
2921 tem
= Fplist_member (contact
, QCcoding
);
2922 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2928 val
= XCAR (XCDR (tem
));
2932 else if (!NILP (Vcoding_system_for_read
))
2933 val
= Vcoding_system_for_read
;
2934 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2935 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2937 pset_decode_coding_system (p
, val
);
2942 val
= XCAR (XCDR (tem
));
2946 else if (!NILP (Vcoding_system_for_write
))
2947 val
= Vcoding_system_for_write
;
2948 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2949 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2951 pset_encode_coding_system (p
, val
);
2953 setup_process_coding_systems (proc
);
2954 pset_decoding_buf (p
, empty_unibyte_string
);
2955 p
->decoding_carryover
= 0;
2956 pset_encoding_buf (p
, empty_unibyte_string
);
2957 p
->inherit_coding_system_flag
2958 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2960 Fserial_process_configure (nargs
, args
);
2962 specpdl_ptr
= specpdl
+ specpdl_count
;
2968 set_network_socket_coding_system (Lisp_Object proc
, Lisp_Object host
,
2969 Lisp_Object service
, Lisp_Object name
)
2972 struct Lisp_Process
*p
= XPROCESS (proc
);
2973 Lisp_Object contact
= p
->childp
;
2974 Lisp_Object coding_systems
= Qt
;
2977 tem
= Fplist_member (contact
, QCcoding
);
2978 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2979 tem
= Qnil
; /* No error message (too late!). */
2981 /* Setup coding systems for communicating with the network stream. */
2982 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
2986 val
= XCAR (XCDR (tem
));
2990 else if (!NILP (Vcoding_system_for_read
))
2991 val
= Vcoding_system_for_read
;
2992 else if ((!NILP (p
->buffer
)
2993 && NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
2994 || (NILP (p
->buffer
)
2995 && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2996 /* We dare not decode end-of-line format by setting VAL to
2997 Qraw_text, because the existing Emacs Lisp libraries
2998 assume that they receive bare code including a sequence of
3003 if (NILP (host
) || NILP (service
))
3004 coding_systems
= Qnil
;
3006 coding_systems
= CALLN (Ffind_operation_coding_system
,
3007 Qopen_network_stream
, name
, p
->buffer
,
3009 if (CONSP (coding_systems
))
3010 val
= XCAR (coding_systems
);
3011 else if (CONSP (Vdefault_process_coding_system
))
3012 val
= XCAR (Vdefault_process_coding_system
);
3016 pset_decode_coding_system (p
, val
);
3020 val
= XCAR (XCDR (tem
));
3024 else if (!NILP (Vcoding_system_for_write
))
3025 val
= Vcoding_system_for_write
;
3026 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3030 if (EQ (coding_systems
, Qt
))
3032 if (NILP (host
) || NILP (service
))
3033 coding_systems
= Qnil
;
3035 coding_systems
= CALLN (Ffind_operation_coding_system
,
3036 Qopen_network_stream
, name
, p
->buffer
,
3039 if (CONSP (coding_systems
))
3040 val
= XCDR (coding_systems
);
3041 else if (CONSP (Vdefault_process_coding_system
))
3042 val
= XCDR (Vdefault_process_coding_system
);
3046 pset_encode_coding_system (p
, val
);
3048 pset_decoding_buf (p
, empty_unibyte_string
);
3049 p
->decoding_carryover
= 0;
3050 pset_encoding_buf (p
, empty_unibyte_string
);
3052 p
->inherit_coding_system_flag
3053 = !(!NILP (tem
) || NILP (p
->buffer
) || !inherit_process_coding_system
);
3058 finish_after_tls_connection (Lisp_Object proc
)
3060 struct Lisp_Process
*p
= XPROCESS (proc
);
3061 Lisp_Object contact
= p
->childp
;
3062 Lisp_Object result
= Qt
;
3064 if (!NILP (Ffboundp (Qnsm_verify_connection
)))
3065 result
= call3 (Qnsm_verify_connection
,
3067 Fplist_get (contact
, QChost
),
3068 Fplist_get (contact
, QCservice
));
3072 pset_status (p
, list2 (Qfailed
,
3073 build_string ("The Network Security Manager stopped the connections")));
3074 deactivate_process (proc
);
3078 /* If we cleared the connection wait mask before we did
3079 the TLS setup, then we have to say that the process
3080 is finally "open" here. */
3081 if (! FD_ISSET (p
->outfd
, &connect_wait_mask
))
3083 pset_status (p
, Qrun
);
3084 /* Execute the sentinel here. If we had relied on
3085 status_notify to do it later, it will read input
3086 from the process before calling the sentinel. */
3087 exec_sentinel (proc
, build_string ("open\n"));
3094 connect_network_socket (Lisp_Object proc
, Lisp_Object ip_addresses
)
3096 ptrdiff_t count
= SPECPDL_INDEX ();
3098 int s
= -1, outch
, inch
;
3100 Lisp_Object ip_address
;
3102 struct sockaddr
*sa
= NULL
;
3105 struct Lisp_Process
*p
= XPROCESS (proc
);
3106 Lisp_Object contact
= p
->childp
;
3109 /* Do this in case we never enter the while-loop below. */
3110 count1
= SPECPDL_INDEX ();
3113 while (!NILP (ip_addresses
))
3115 ip_address
= XCAR (ip_addresses
);
3116 ip_addresses
= XCDR (ip_addresses
);
3122 addrlen
= get_lisp_to_sockaddr_size (ip_address
, &family
);
3125 sa
= xmalloc (addrlen
);
3126 conv_lisp_to_sockaddr (family
, ip_address
, sa
, addrlen
);
3128 s
= socket (family
, p
->socktype
| SOCK_CLOEXEC
, p
->ai_protocol
);
3135 #ifdef DATAGRAM_SOCKETS
3136 if (!p
->is_server
&& p
->socktype
== SOCK_DGRAM
)
3138 #endif /* DATAGRAM_SOCKETS */
3140 #ifdef NON_BLOCKING_CONNECT
3141 if (p
->is_non_blocking_client
)
3143 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3154 /* Make us close S if quit. */
3155 record_unwind_protect_int (close_file_unwind
, s
);
3157 /* Parse network options in the arg list. We simply ignore anything
3158 which isn't a known option (including other keywords). An error
3159 is signaled if setting a known option fails. */
3161 Lisp_Object params
= contact
, key
, val
;
3163 while (!NILP (params
))
3165 key
= XCAR (params
);
3166 params
= XCDR (params
);
3167 val
= XCAR (params
);
3168 params
= XCDR (params
);
3169 optbits
|= set_socket_option (s
, key
, val
);
3175 /* Configure as a server socket. */
3177 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3178 explicit :reuseaddr key to override this. */
3179 #ifdef HAVE_LOCAL_SOCKETS
3180 if (family
!= AF_LOCAL
)
3182 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3185 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3186 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3189 if (bind (s
, sa
, addrlen
))
3190 report_file_error ("Cannot bind server socket", Qnil
);
3192 #ifdef HAVE_GETSOCKNAME
3195 struct sockaddr_in sa1
;
3196 socklen_t len1
= sizeof (sa1
);
3197 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3199 Lisp_Object service
;
3200 service
= make_number (ntohs (sa1
.sin_port
));
3201 contact
= Fplist_put (contact
, QCservice
, service
);
3202 /* Save the port number so that we can stash it in
3203 the process object later. */
3204 ((struct sockaddr_in
*)sa
)->sin_port
= sa1
.sin_port
;
3209 if (p
->socktype
!= SOCK_DGRAM
&& listen (s
, p
->backlog
))
3210 report_file_error ("Cannot listen on server socket", Qnil
);
3218 ret
= connect (s
, sa
, addrlen
);
3221 if (ret
== 0 || xerrno
== EISCONN
)
3223 /* The unwind-protect will be discarded afterwards.
3224 Likewise for immediate_quit. */
3228 #ifdef NON_BLOCKING_CONNECT
3230 if (p
->is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3234 if (p
->is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3241 if (xerrno
== EINTR
)
3243 /* Unlike most other syscalls connect() cannot be called
3244 again. (That would return EALREADY.) The proper way to
3245 wait for completion is pselect(). */
3253 sc
= pselect (s
+ 1, NULL
, &fdset
, NULL
, NULL
, NULL
);
3259 report_file_error ("Failed select", Qnil
);
3263 len
= sizeof xerrno
;
3264 eassert (FD_ISSET (s
, &fdset
));
3265 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) < 0)
3266 report_file_error ("Failed getsockopt", Qnil
);
3268 report_file_errno ("Failed connect", Qnil
, xerrno
);
3271 #endif /* !WINDOWSNT */
3275 /* Discard the unwind protect closing S. */
3276 specpdl_ptr
= specpdl
+ count1
;
3281 if (xerrno
== EINTR
)
3288 #ifdef DATAGRAM_SOCKETS
3289 if (p
->socktype
== SOCK_DGRAM
)
3291 if (datagram_address
[s
].sa
)
3294 datagram_address
[s
].sa
= xmalloc (addrlen
);
3295 datagram_address
[s
].len
= addrlen
;
3299 memset (datagram_address
[s
].sa
, 0, addrlen
);
3300 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3303 ptrdiff_t rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3304 if (rlen
!= 0 && rfamily
== family
3306 conv_lisp_to_sockaddr (rfamily
, remote
,
3307 datagram_address
[s
].sa
, rlen
);
3311 memcpy (datagram_address
[s
].sa
, sa
, addrlen
);
3315 contact
= Fplist_put (contact
, p
->is_server
? QClocal
: QCremote
,
3316 conv_sockaddr_to_lisp (sa
, addrlen
));
3317 #ifdef HAVE_GETSOCKNAME
3320 struct sockaddr_in sa1
;
3321 socklen_t len1
= sizeof (sa1
);
3322 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3323 contact
= Fplist_put (contact
, QClocal
,
3324 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3333 /* If non-blocking got this far - and failed - assume non-blocking is
3334 not supported after all. This is probably a wrong assumption, but
3335 the normal blocking calls to open-network-stream handles this error
3337 if (p
->is_non_blocking_client
)
3340 report_file_errno ((p
->is_server
3341 ? "make server process failed"
3342 : "make client process failed"),
3349 chan_process
[inch
] = proc
;
3351 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3353 p
= XPROCESS (proc
);
3354 p
->open_fd
[SUBPROCESS_STDIN
] = inch
;
3358 /* Discard the unwind protect for closing S, if any. */
3359 specpdl_ptr
= specpdl
+ count1
;
3361 /* Unwind bind_polling_period and request_sigio. */
3362 unbind_to (count
, Qnil
);
3364 if (p
->is_server
&& p
->socktype
!= SOCK_DGRAM
)
3365 pset_status (p
, Qlisten
);
3367 /* Make the process marker point into the process buffer (if any). */
3368 if (BUFFERP (p
->buffer
))
3369 set_marker_both (p
->mark
, p
->buffer
,
3370 BUF_ZV (XBUFFER (p
->buffer
)),
3371 BUF_ZV_BYTE (XBUFFER (p
->buffer
)));
3373 #ifdef NON_BLOCKING_CONNECT
3374 if (p
->is_non_blocking_client
)
3376 /* We may get here if connect did succeed immediately. However,
3377 in that case, we still need to signal this like a non-blocking
3379 pset_status (p
, Qconnect
);
3380 if (!FD_ISSET (inch
, &connect_wait_mask
))
3382 FD_SET (inch
, &connect_wait_mask
);
3383 FD_SET (inch
, &write_mask
);
3384 num_pending_connects
++;
3389 /* A server may have a client filter setting of Qt, but it must
3390 still listen for incoming connects unless it is stopped. */
3391 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3392 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3394 FD_SET (inch
, &input_wait_mask
);
3395 FD_SET (inch
, &non_keyboard_wait_mask
);
3398 if (inch
> max_process_desc
)
3399 max_process_desc
= inch
;
3401 /* Set up the masks based on the process filter. */
3402 set_process_filter_masks (p
);
3404 setup_process_coding_systems (proc
);
3407 /* Continue the asynchronous connection. */
3408 if (!NILP (p
->gnutls_boot_parameters
))
3410 Lisp_Object boot
, params
= p
->gnutls_boot_parameters
;
3412 boot
= Fgnutls_boot (proc
, XCAR (params
), XCDR (params
));
3413 p
->gnutls_boot_parameters
= Qnil
;
3415 if (p
->gnutls_initstage
== GNUTLS_STAGE_READY
)
3416 /* Run sentinels, etc. */
3417 finish_after_tls_connection (proc
);
3418 else if (p
->gnutls_initstage
!= GNUTLS_STAGE_HANDSHAKE_TRIED
)
3420 deactivate_process (proc
);
3422 pset_status (p
, list2 (Qfailed
,
3423 build_string ("TLS negotiation failed")));
3425 pset_status (p
, list2 (Qfailed
, boot
));
3432 #ifndef HAVE_GETADDRINFO
3434 conv_numerical_to_lisp (unsigned char *number
, int length
, int port
)
3436 Lisp_Object address
= Fmake_vector (make_number (length
+ 1), Qnil
);
3437 struct Lisp_Vector
*p
= XVECTOR (address
);
3439 p
->contents
[length
] = make_number (port
);
3440 for (int i
= 0; i
< length
; i
++)
3441 p
->contents
[i
] = make_number (number
[i
]);
3447 /* Create a network stream/datagram client/server process. Treated
3448 exactly like a normal process when reading and writing. Primary
3449 differences are in status display and process deletion. A network
3450 connection has no PID; you cannot signal it. All you can do is
3451 stop/continue it and deactivate/close it via delete-process. */
3453 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3455 doc
: /* Create and return a network server or client process.
3457 In Emacs, network connections are represented by process objects, so
3458 input and output work as for subprocesses and `delete-process' closes
3459 a network connection. However, a network process has no process id,
3460 it cannot be signaled, and the status codes are different from normal
3463 Arguments are specified as keyword/argument pairs. The following
3464 arguments are defined:
3466 :name NAME -- NAME is name for process. It is modified if necessary
3469 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3470 with the process. Process output goes at end of that buffer, unless
3471 you specify an output stream or filter function to handle the output.
3472 BUFFER may be also nil, meaning that this process is not associated
3475 :host HOST -- HOST is name of the host to connect to, or its IP
3476 address. The symbol `local' specifies the local host. If specified
3477 for a server process, it must be a valid name or address for the local
3478 host, and only clients connecting to that address will be accepted.
3480 :service SERVICE -- SERVICE is name of the service desired, or an
3481 integer specifying a port number to connect to. If SERVICE is t,
3482 a random port number is selected for the server. (If Emacs was
3483 compiled with getaddrinfo, a port number can also be specified as a
3484 string, e.g. "80", as well as an integer. This is not portable.)
3486 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3487 stream type connection, `datagram' creates a datagram type connection,
3488 `seqpacket' creates a reliable datagram connection.
3490 :family FAMILY -- FAMILY is the address (and protocol) family for the
3491 service specified by HOST and SERVICE. The default (nil) is to use
3492 whatever address family (IPv4 or IPv6) that is defined for the host
3493 and port number specified by HOST and SERVICE. Other address families
3495 local -- for a local (i.e. UNIX) address specified by SERVICE.
3496 ipv4 -- use IPv4 address family only.
3497 ipv6 -- use IPv6 address family only.
3499 :local ADDRESS -- ADDRESS is the local address used for the connection.
3500 This parameter is ignored when opening a client process. When specified
3501 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3503 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3504 connection. This parameter is ignored when opening a stream server
3505 process. For a datagram server process, it specifies the initial
3506 setting of the remote datagram address. When specified for a client
3507 process, the FAMILY, HOST, and SERVICE args are ignored.
3509 The format of ADDRESS depends on the address family:
3510 - An IPv4 address is represented as an vector of integers [A B C D P]
3511 corresponding to numeric IP address A.B.C.D and port number P.
3512 - A local address is represented as a string with the address in the
3513 local address space.
3514 - An "unsupported family" address is represented by a cons (F . AV)
3515 where F is the family number and AV is a vector containing the socket
3516 address data with one element per address data byte. Do not rely on
3517 this format in portable code, as it may depend on implementation
3518 defined constants, data sizes, and data structure alignment.
3520 :coding CODING -- If CODING is a symbol, it specifies the coding
3521 system used for both reading and writing for this process. If CODING
3522 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3523 ENCODING is used for writing.
3525 :nowait BOOL -- If NOWAIT is non-nil for a stream type client
3526 process, return without waiting for the connection to complete;
3527 instead, the sentinel function will be called with second arg matching
3528 "open" (if successful) or "failed" when the connect completes.
3529 Default is to use a blocking connect (i.e. wait) for stream type
3532 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3533 running when Emacs is exited.
3535 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3536 In the stopped state, a server process does not accept new
3537 connections, and a client process does not handle incoming traffic.
3538 The stopped state is cleared by `continue-process' and set by
3541 :filter FILTER -- Install FILTER as the process filter.
3543 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3544 process filter are multibyte, otherwise they are unibyte.
3545 If this keyword is not specified, the strings are multibyte if
3546 the default value of `enable-multibyte-characters' is non-nil.
3548 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3550 :log LOG -- Install LOG as the server process log function. This
3551 function is called when the server accepts a network connection from a
3552 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3553 is the server process, CLIENT is the new process for the connection,
3554 and MESSAGE is a string.
3556 :plist PLIST -- Install PLIST as the new process's initial plist.
3558 :tls-parameters LIST -- is a list that should be supplied if you're
3559 opening a TLS connection. The first element is the TLS type (either
3560 `gnutls-x509pki' or `gnutls-anon'), and the remaining elements should
3561 be a keyword list accepted by gnutls-boot (as returned by
3562 `gnutls-boot-parameters').
3564 :server QLEN -- if QLEN is non-nil, create a server process for the
3565 specified FAMILY, SERVICE, and connection type (stream or datagram).
3566 If QLEN is an integer, it is used as the max. length of the server's
3567 pending connection queue (also known as the backlog); the default
3568 queue length is 5. Default is to create a client process.
3570 The following network options can be specified for this connection:
3572 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3573 :dontroute BOOL -- Only send to directly connected hosts.
3574 :keepalive BOOL -- Send keep-alive messages on network stream.
3575 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3576 :oobinline BOOL -- Place out-of-band data in receive data stream.
3577 :priority INT -- Set protocol defined priority for sent packets.
3578 :reuseaddr BOOL -- Allow reusing a recently used local address
3579 (this is allowed by default for a server process).
3580 :bindtodevice NAME -- bind to interface NAME. Using this may require
3581 special privileges on some systems.
3583 Consult the relevant system programmer's manual pages for more
3584 information on using these options.
3587 A server process will listen for and accept connections from clients.
3588 When a client connection is accepted, a new network process is created
3589 for the connection with the following parameters:
3591 - The client's process name is constructed by concatenating the server
3592 process's NAME and a client identification string.
3593 - If the FILTER argument is non-nil, the client process will not get a
3594 separate process buffer; otherwise, the client's process buffer is a newly
3595 created buffer named after the server process's BUFFER name or process
3596 NAME concatenated with the client identification string.
3597 - The connection type and the process filter and sentinel parameters are
3598 inherited from the server process's TYPE, FILTER and SENTINEL.
3599 - The client process's contact info is set according to the client's
3600 addressing information (typically an IP address and a port number).
3601 - The client process's plist is initialized from the server's plist.
3603 Notice that the FILTER and SENTINEL args are never used directly by
3604 the server process. Also, the BUFFER argument is not used directly by
3605 the server process, but via the optional :log function, accepted (and
3606 failed) connections may be logged in the server process's buffer.
3608 The original argument list, modified with the actual connection
3609 information, is available via the `process-contact' function.
3611 usage: (make-network-process &rest ARGS) */)
3612 (ptrdiff_t nargs
, Lisp_Object
*args
)
3615 Lisp_Object contact
;
3616 struct Lisp_Process
*p
;
3617 #if defined HAVE_GETADDRINFO || defined HAVE_GETADDRINFO_A
3618 const char *portstring
;
3619 ptrdiff_t portstringlen ATTRIBUTE_UNUSED
;
3620 char portbuf
[INT_BUFSIZE_BOUND (EMACS_INT
)];
3622 #ifdef HAVE_LOCAL_SOCKETS
3623 struct sockaddr_un address_un
;
3627 Lisp_Object name
, buffer
, host
, service
, address
;
3628 Lisp_Object filter
, sentinel
;
3629 Lisp_Object ip_addresses
= Qnil
;
3632 int ai_protocol
= 0;
3633 #ifdef HAVE_GETADDRINFO_A
3634 struct gaicb
*dns_request
= NULL
;
3636 ptrdiff_t count
= SPECPDL_INDEX ();
3641 /* Save arguments for process-contact and clone-process. */
3642 contact
= Flist (nargs
, args
);
3645 /* Ensure socket support is loaded if available. */
3646 init_winsock (TRUE
);
3649 /* :type TYPE (nil: stream, datagram */
3650 tem
= Fplist_get (contact
, QCtype
);
3652 socktype
= SOCK_STREAM
;
3653 #ifdef DATAGRAM_SOCKETS
3654 else if (EQ (tem
, Qdatagram
))
3655 socktype
= SOCK_DGRAM
;
3657 #ifdef HAVE_SEQPACKET
3658 else if (EQ (tem
, Qseqpacket
))
3659 socktype
= SOCK_SEQPACKET
;
3662 error ("Unsupported connection type");
3664 name
= Fplist_get (contact
, QCname
);
3665 buffer
= Fplist_get (contact
, QCbuffer
);
3666 filter
= Fplist_get (contact
, QCfilter
);
3667 sentinel
= Fplist_get (contact
, QCsentinel
);
3669 CHECK_STRING (name
);
3671 /* :local ADDRESS or :remote ADDRESS */
3672 tem
= Fplist_get (contact
, QCserver
);
3674 address
= Fplist_get (contact
, QCremote
);
3676 address
= Fplist_get (contact
, QClocal
);
3677 if (!NILP (address
))
3679 host
= service
= Qnil
;
3681 if (!get_lisp_to_sockaddr_size (address
, &family
))
3682 error ("Malformed :address");
3684 ip_addresses
= list1 (address
);
3688 /* :family FAMILY -- nil (for Inet), local, or integer. */
3689 tem
= Fplist_get (contact
, QCfamily
);
3692 #if defined (HAVE_GETADDRINFO) && defined (AF_INET6)
3698 #ifdef HAVE_LOCAL_SOCKETS
3699 else if (EQ (tem
, Qlocal
))
3703 else if (EQ (tem
, Qipv6
))
3706 else if (EQ (tem
, Qipv4
))
3708 else if (TYPE_RANGED_INTEGERP (int, tem
))
3709 family
= XINT (tem
);
3711 error ("Unknown address family");
3713 /* :service SERVICE -- string, integer (port number), or t (random port). */
3714 service
= Fplist_get (contact
, QCservice
);
3716 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3717 host
= Fplist_get (contact
, QChost
);
3720 /* The "connection" function gets it bind info from the address we're
3721 given, so use this dummy address if nothing is specified. */
3722 #ifdef HAVE_LOCAL_SOCKETS
3723 if (family
!= AF_LOCAL
)
3725 host
= build_string ("127.0.0.1");
3729 if (EQ (host
, Qlocal
))
3730 /* Depending on setup, "localhost" may map to different IPv4 and/or
3731 IPv6 addresses, so it's better to be explicit (Bug#6781). */
3732 host
= build_string ("127.0.0.1");
3733 CHECK_STRING (host
);
3736 #ifdef HAVE_LOCAL_SOCKETS
3737 if (family
== AF_LOCAL
)
3741 message (":family local ignores the :host property");
3742 contact
= Fplist_put (contact
, QChost
, Qnil
);
3745 CHECK_STRING (service
);
3746 if (sizeof address_un
.sun_path
<= SBYTES (service
))
3747 error ("Service name too long");
3748 ip_addresses
= list1 (service
);
3753 /* Slow down polling to every ten seconds.
3754 Some kernels have a bug which causes retrying connect to fail
3755 after a connect. Polling can interfere with gethostbyname too. */
3756 #ifdef POLL_FOR_INPUT
3757 if (socktype
!= SOCK_DGRAM
)
3759 record_unwind_protect_void (run_all_atimers
);
3760 bind_polling_period (10);
3764 #if defined HAVE_GETADDRINFO || defined HAVE_GETADDRINFO_A
3767 /* SERVICE can either be a string or int.
3768 Convert to a C string for later use by getaddrinfo. */
3769 if (EQ (service
, Qt
))
3774 else if (INTEGERP (service
))
3776 portstring
= portbuf
;
3777 portstringlen
= sprintf (portbuf
, "%"pI
"d", XINT (service
));
3781 CHECK_STRING (service
);
3782 portstring
= SSDATA (service
);
3783 portstringlen
= SBYTES (service
);
3788 #ifdef HAVE_GETADDRINFO_A
3789 if (!NILP (host
) && !NILP (Fplist_get (contact
, QCnowait
)))
3791 ptrdiff_t hostlen
= SBYTES (host
);
3795 struct addrinfo hints
;
3796 char str
[FLEXIBLE_ARRAY_MEMBER
];
3797 } *req
= xmalloc (offsetof (struct req
, str
)
3798 + hostlen
+ 1 + portstringlen
+ 1);
3799 dns_request
= &req
->gaicb
;
3800 dns_request
->ar_name
= req
->str
;
3801 dns_request
->ar_service
= req
->str
+ hostlen
+ 1;
3802 dns_request
->ar_request
= &req
->hints
;
3803 dns_request
->ar_result
= NULL
;
3804 memset (&req
->hints
, 0, sizeof req
->hints
);
3805 req
->hints
.ai_family
= family
;
3806 req
->hints
.ai_socktype
= socktype
;
3807 strcpy (req
->str
, SSDATA (host
));
3808 strcpy (req
->str
+ hostlen
+ 1, portstring
);
3810 int ret
= getaddrinfo_a (GAI_NOWAIT
, &dns_request
, 1, NULL
);
3812 error ("%s/%s getaddrinfo_a error %d", SSDATA (host
), portstring
, ret
);
3816 #endif /* HAVE_GETADDRINFO_A */
3818 #ifdef HAVE_GETADDRINFO
3819 /* If we have a host, use getaddrinfo to resolve both host and service.
3820 Otherwise, use getservbyname to lookup the service. */
3824 struct addrinfo
*res
, *lres
;
3830 #ifdef HAVE_RES_INIT
3834 struct addrinfo hints
;
3835 memset (&hints
, 0, sizeof hints
);
3836 hints
.ai_family
= family
;
3837 hints
.ai_socktype
= socktype
;
3839 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3841 #ifdef HAVE_GAI_STRERROR
3842 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3844 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3848 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3850 ip_addresses
= Fcons (conv_sockaddr_to_lisp
3851 (lres
->ai_addr
, lres
->ai_addrlen
),
3853 ai_protocol
= lres
->ai_protocol
;
3856 ip_addresses
= Fnreverse (ip_addresses
);
3862 #endif /* HAVE_GETADDRINFO */
3864 /* We end up here if getaddrinfo is not defined, or in case no hostname
3865 has been specified (e.g. for a local server process). */
3867 if (EQ (service
, Qt
))
3869 else if (INTEGERP (service
))
3870 port
= XINT (service
);
3873 CHECK_STRING (service
);
3876 if (SBYTES (service
) != 0)
3878 /* Allow the service to be a string containing the port number,
3879 because that's allowed if you have getaddrbyname. */
3881 long int lport
= strtol (SSDATA (service
), &service_end
, 10);
3882 if (service_end
== SSDATA (service
) + SBYTES (service
))
3886 struct servent
*svc_info
3887 = getservbyname (SSDATA (service
),
3888 socktype
== SOCK_DGRAM
? "udp" : "tcp");
3890 port
= ntohs (svc_info
->s_port
);
3895 if (! (0 <= port
&& port
< 1 << 16))
3897 AUTO_STRING (unknown_service
, "Unknown service: %s");
3898 xsignal1 (Qerror
, CALLN (Fformat
, unknown_service
, service
));
3901 #ifndef HAVE_GETADDRINFO
3904 struct hostent
*host_info_ptr
;
3905 unsigned char *addr
;
3908 /* gethostbyname may fail with TRY_AGAIN, but we don't honor that,
3909 as it may `hang' Emacs for a very long time. */
3913 #ifdef HAVE_RES_INIT
3917 host_info_ptr
= gethostbyname ((const char *) SDATA (host
));
3922 addr
= (unsigned char *) host_info_ptr
->h_addr
;
3923 addrlen
= host_info_ptr
->h_length
;
3926 /* Attempt to interpret host as numeric inet address. This
3927 only works for IPv4 addresses. */
3929 unsigned long numeric_addr
= inet_addr (SSDATA (host
));
3931 if (numeric_addr
== -1)
3932 error ("Unknown host \"%s\"", SDATA (host
));
3934 addr
= (unsigned char *) &numeric_addr
;
3938 ip_addresses
= list1 (conv_numerical_to_lisp (addr
, addrlen
, port
));
3940 #endif /* not HAVE_GETADDRINFO */
3945 buffer
= Fget_buffer_create (buffer
);
3946 proc
= make_process (name
);
3947 p
= XPROCESS (proc
);
3948 pset_childp (p
, contact
);
3949 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
3950 pset_type (p
, Qnetwork
);
3952 pset_buffer (p
, buffer
);
3953 pset_sentinel (p
, sentinel
);
3954 pset_filter (p
, filter
);
3955 pset_log (p
, Fplist_get (contact
, QClog
));
3956 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3957 p
->kill_without_query
= 1;
3958 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3959 pset_command (p
, Qt
);
3962 p
->is_non_blocking_client
= 0;
3965 p
->socktype
= socktype
;
3966 p
->ai_protocol
= ai_protocol
;
3967 #ifdef HAVE_GETADDRINFO_A
3968 p
->dns_request
= NULL
;
3971 tem
= Fplist_get (contact
, QCtls_parameters
);
3973 p
->gnutls_boot_parameters
= tem
;
3976 set_network_socket_coding_system (proc
, service
, host
, name
);
3978 unbind_to (count
, Qnil
);
3981 tem
= Fplist_get (contact
, QCserver
);
3984 /* Don't support network sockets when non-blocking mode is
3985 not available, since a blocked Emacs is not useful. */
3987 if (TYPE_RANGED_INTEGERP (int, tem
))
3988 p
->backlog
= XINT (tem
);
3992 if (!p
->is_server
&& socktype
!= SOCK_DGRAM
3993 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
3995 #ifndef NON_BLOCKING_CONNECT
3996 error ("Non-blocking connect not supported");
3998 p
->is_non_blocking_client
= 1;
4002 #ifdef HAVE_GETADDRINFO_A
4003 /* If we're doing async address resolution, the list of addresses
4004 here will be nil, so we postpone connecting to the server. */
4005 if (!p
->is_server
&& NILP (ip_addresses
))
4007 p
->dns_request
= dns_request
;
4008 p
->status
= Qconnect
;
4012 connect_network_socket (proc
, ip_addresses
);
4014 #else /* HAVE_GETADDRINFO_A */
4015 connect_network_socket (proc
, ip_addresses
);
4022 #ifdef HAVE_NET_IF_H
4026 network_interface_list (void)
4028 struct ifconf ifconf
;
4029 struct ifreq
*ifreq
;
4031 ptrdiff_t buf_size
= 512;
4036 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
4039 count
= SPECPDL_INDEX ();
4040 record_unwind_protect_int (close_file_unwind
, s
);
4044 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
4045 ifconf
.ifc_buf
= buf
;
4046 ifconf
.ifc_len
= buf_size
;
4047 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
4054 while (ifconf
.ifc_len
== buf_size
);
4056 res
= unbind_to (count
, Qnil
);
4057 ifreq
= ifconf
.ifc_req
;
4058 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
4060 struct ifreq
*ifq
= ifreq
;
4061 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
4062 #define SIZEOF_IFREQ(sif) \
4063 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
4064 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
4066 int len
= SIZEOF_IFREQ (ifq
);
4068 int len
= sizeof (*ifreq
);
4070 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
4071 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
4073 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
4076 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
4077 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
4078 res
= Fcons (Fcons (build_string (namebuf
),
4079 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
4080 sizeof (struct sockaddr
))),
4087 #endif /* SIOCGIFCONF */
4089 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
4093 const char *flag_sym
;
4096 static const struct ifflag_def ifflag_table
[] = {
4100 #ifdef IFF_BROADCAST
4101 { IFF_BROADCAST
, "broadcast" },
4104 { IFF_DEBUG
, "debug" },
4107 { IFF_LOOPBACK
, "loopback" },
4109 #ifdef IFF_POINTOPOINT
4110 { IFF_POINTOPOINT
, "pointopoint" },
4113 { IFF_RUNNING
, "running" },
4116 { IFF_NOARP
, "noarp" },
4119 { IFF_PROMISC
, "promisc" },
4121 #ifdef IFF_NOTRAILERS
4122 #ifdef NS_IMPL_COCOA
4123 /* Really means smart, notrailers is obsolete. */
4124 { IFF_NOTRAILERS
, "smart" },
4126 { IFF_NOTRAILERS
, "notrailers" },
4130 { IFF_ALLMULTI
, "allmulti" },
4133 { IFF_MASTER
, "master" },
4136 { IFF_SLAVE
, "slave" },
4138 #ifdef IFF_MULTICAST
4139 { IFF_MULTICAST
, "multicast" },
4142 { IFF_PORTSEL
, "portsel" },
4144 #ifdef IFF_AUTOMEDIA
4145 { IFF_AUTOMEDIA
, "automedia" },
4148 { IFF_DYNAMIC
, "dynamic" },
4151 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress. */
4154 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions. */
4157 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit. */
4160 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit. */
4163 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit. */
4169 network_interface_info (Lisp_Object ifname
)
4172 Lisp_Object res
= Qnil
;
4177 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
4178 && defined HAVE_GETIFADDRS && defined LLADDR)
4179 struct ifaddrs
*ifap
;
4182 CHECK_STRING (ifname
);
4184 if (sizeof rq
.ifr_name
<= SBYTES (ifname
))
4185 error ("interface name too long");
4186 lispstpcpy (rq
.ifr_name
, ifname
);
4188 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
4191 count
= SPECPDL_INDEX ();
4192 record_unwind_protect_int (close_file_unwind
, s
);
4195 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
4196 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4198 int flags
= rq
.ifr_flags
;
4199 const struct ifflag_def
*fp
;
4202 /* If flags is smaller than int (i.e. short) it may have the high bit set
4203 due to IFF_MULTICAST. In that case, sign extending it into
4205 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
4206 flags
= (unsigned short) rq
.ifr_flags
;
4209 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4211 if (flags
& fp
->flag_bit
)
4213 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4214 flags
-= fp
->flag_bit
;
4217 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
4221 elt
= Fcons (make_number (fnum
), elt
);
4226 res
= Fcons (elt
, res
);
4229 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
4230 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4232 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4233 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4237 for (n
= 0; n
< 6; n
++)
4238 p
->contents
[n
] = make_number (((unsigned char *)
4239 &rq
.ifr_hwaddr
.sa_data
[0])
4241 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4243 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
4244 if (getifaddrs (&ifap
) != -1)
4246 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4247 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4250 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
4252 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
4253 unsigned char linkaddr
[6];
4256 if (it
->ifa_addr
->sa_family
!= AF_LINK
4257 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
4258 || sdl
->sdl_alen
!= 6)
4261 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
4262 for (n
= 0; n
< 6; n
++)
4263 p
->contents
[n
] = make_number (linkaddr
[n
]);
4265 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
4269 #ifdef HAVE_FREEIFADDRS
4273 #endif /* HAVE_GETIFADDRS && LLADDR */
4275 res
= Fcons (elt
, res
);
4278 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
4279 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4282 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4283 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4285 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4289 res
= Fcons (elt
, res
);
4292 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4293 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4296 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4299 res
= Fcons (elt
, res
);
4302 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
4303 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4306 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4309 res
= Fcons (elt
, res
);
4311 return unbind_to (count
, any
? res
: Qnil
);
4313 #endif /* !SIOCGIFADDR && !SIOCGIFHWADDR && !SIOCGIFFLAGS */
4314 #endif /* defined (HAVE_NET_IF_H) */
4316 DEFUN ("network-interface-list", Fnetwork_interface_list
,
4317 Snetwork_interface_list
, 0, 0, 0,
4318 doc
: /* Return an alist of all network interfaces and their network address.
4319 Each element is a cons, the car of which is a string containing the
4320 interface name, and the cdr is the network address in internal
4321 format; see the description of ADDRESS in `make-network-process'.
4323 If the information is not available, return nil. */)
4326 #if (defined HAVE_NET_IF_H && defined SIOCGIFCONF) || defined WINDOWSNT
4327 return network_interface_list ();
4333 DEFUN ("network-interface-info", Fnetwork_interface_info
,
4334 Snetwork_interface_info
, 1, 1, 0,
4335 doc
: /* Return information about network interface named IFNAME.
4336 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4337 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4338 NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
4339 FLAGS is the current flags of the interface.
4341 Data that is unavailable is returned as nil. */)
4342 (Lisp_Object ifname
)
4344 #if ((defined HAVE_NET_IF_H \
4345 && (defined SIOCGIFADDR || defined SIOCGIFHWADDR \
4346 || defined SIOCGIFFLAGS)) \
4347 || defined WINDOWSNT)
4348 return network_interface_info (ifname
);
4354 /* If program file NAME starts with /: for quoting a magic
4355 name, remove that, preserving the multibyteness of NAME. */
4358 remove_slash_colon (Lisp_Object name
)
4361 ((SBYTES (name
) > 2 && SREF (name
, 0) == '/' && SREF (name
, 1) == ':')
4362 ? make_specified_string (SSDATA (name
) + 2, SCHARS (name
) - 2,
4363 SBYTES (name
) - 2, STRING_MULTIBYTE (name
))
4367 /* Turn off input and output for process PROC. */
4370 deactivate_process (Lisp_Object proc
)
4373 struct Lisp_Process
*p
= XPROCESS (proc
);
4377 /* Delete GnuTLS structures in PROC, if any. */
4378 emacs_gnutls_deinit (proc
);
4379 #endif /* HAVE_GNUTLS */
4381 if (p
->read_output_delay
> 0)
4383 if (--process_output_delay_count
< 0)
4384 process_output_delay_count
= 0;
4385 p
->read_output_delay
= 0;
4386 p
->read_output_skip
= 0;
4389 /* Beware SIGCHLD hereabouts. */
4391 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
4392 close_process_fd (&p
->open_fd
[i
]);
4394 inchannel
= p
->infd
;
4399 #ifdef DATAGRAM_SOCKETS
4400 if (DATAGRAM_CHAN_P (inchannel
))
4402 xfree (datagram_address
[inchannel
].sa
);
4403 datagram_address
[inchannel
].sa
= 0;
4404 datagram_address
[inchannel
].len
= 0;
4407 chan_process
[inchannel
] = Qnil
;
4408 FD_CLR (inchannel
, &input_wait_mask
);
4409 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4410 #ifdef NON_BLOCKING_CONNECT
4411 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4413 FD_CLR (inchannel
, &connect_wait_mask
);
4414 FD_CLR (inchannel
, &write_mask
);
4415 if (--num_pending_connects
< 0)
4419 if (inchannel
== max_process_desc
)
4421 /* We just closed the highest-numbered process input descriptor,
4422 so recompute the highest-numbered one now. */
4426 while (0 <= i
&& NILP (chan_process
[i
]));
4428 max_process_desc
= i
;
4434 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4436 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4437 It is given to their filter functions.
4438 Optional argument PROCESS means do not return until output has been
4439 received from PROCESS.
4441 Optional second argument SECONDS and third argument MILLISEC
4442 specify a timeout; return after that much time even if there is
4443 no subprocess output. If SECONDS is a floating point number,
4444 it specifies a fractional number of seconds to wait.
4445 The MILLISEC argument is obsolete and should be avoided.
4447 If optional fourth argument JUST-THIS-ONE is non-nil, accept output
4448 from PROCESS only, suspending reading output from other processes.
4449 If JUST-THIS-ONE is an integer, don't run any timers either.
4450 Return non-nil if we received any output from PROCESS (or, if PROCESS
4451 is nil, from any process) before the timeout expired. */)
4452 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
4457 if (! NILP (process
))
4458 CHECK_PROCESS (process
);
4460 just_this_one
= Qnil
;
4462 if (!NILP (millisec
))
4463 { /* Obsolete calling convention using integers rather than floats. */
4464 CHECK_NUMBER (millisec
);
4466 seconds
= make_float (XINT (millisec
) / 1000.0);
4469 CHECK_NUMBER (seconds
);
4470 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4477 if (!NILP (seconds
))
4479 if (INTEGERP (seconds
))
4481 if (XINT (seconds
) > 0)
4483 secs
= XINT (seconds
);
4487 else if (FLOATP (seconds
))
4489 if (XFLOAT_DATA (seconds
) > 0)
4491 struct timespec t
= dtotimespec (XFLOAT_DATA (seconds
));
4492 secs
= min (t
.tv_sec
, WAIT_READING_MAX
);
4497 wrong_type_argument (Qnumberp
, seconds
);
4499 else if (! NILP (process
))
4503 ((wait_reading_process_output (secs
, nsecs
, 0, 0,
4505 !NILP (process
) ? XPROCESS (process
) : NULL
,
4506 (NILP (just_this_one
) ? 0
4507 : !INTEGERP (just_this_one
) ? 1 : -1))
4512 /* Accept a connection for server process SERVER on CHANNEL. */
4514 static EMACS_INT connect_counter
= 0;
4517 server_accept_connection (Lisp_Object server
, int channel
)
4519 Lisp_Object proc
, caller
, name
, buffer
;
4520 Lisp_Object contact
, host
, service
;
4521 struct Lisp_Process
*ps
= XPROCESS (server
);
4522 struct Lisp_Process
*p
;
4526 struct sockaddr_in in
;
4528 struct sockaddr_in6 in6
;
4530 #ifdef HAVE_LOCAL_SOCKETS
4531 struct sockaddr_un un
;
4534 socklen_t len
= sizeof saddr
;
4537 s
= accept4 (channel
, &saddr
.sa
, &len
, SOCK_CLOEXEC
);
4546 if (code
== EWOULDBLOCK
)
4550 if (!NILP (ps
->log
))
4551 call3 (ps
->log
, server
, Qnil
,
4552 concat3 (build_string ("accept failed with code"),
4553 Fnumber_to_string (make_number (code
)),
4554 build_string ("\n")));
4558 count
= SPECPDL_INDEX ();
4559 record_unwind_protect_int (close_file_unwind
, s
);
4563 /* Setup a new process to handle the connection. */
4565 /* Generate a unique identification of the caller, and build contact
4566 information for this process. */
4569 switch (saddr
.sa
.sa_family
)
4573 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4575 AUTO_STRING (ipv4_format
, "%d.%d.%d.%d");
4576 host
= CALLN (Fformat
, ipv4_format
,
4577 make_number (ip
[0]), make_number (ip
[1]),
4578 make_number (ip
[2]), make_number (ip
[3]));
4579 service
= make_number (ntohs (saddr
.in
.sin_port
));
4580 AUTO_STRING (caller_format
, " <%s:%d>");
4581 caller
= CALLN (Fformat
, caller_format
, host
, service
);
4588 Lisp_Object args
[9];
4589 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4592 AUTO_STRING (ipv6_format
, "%x:%x:%x:%x:%x:%x:%x:%x");
4593 args
[0] = ipv6_format
;
4594 for (i
= 0; i
< 8; i
++)
4595 args
[i
+ 1] = make_number (ntohs (ip6
[i
]));
4596 host
= CALLMANY (Fformat
, args
);
4597 service
= make_number (ntohs (saddr
.in
.sin_port
));
4598 AUTO_STRING (caller_format
, " <[%s]:%d>");
4599 caller
= CALLN (Fformat
, caller_format
, host
, service
);
4604 #ifdef HAVE_LOCAL_SOCKETS
4608 caller
= Fnumber_to_string (make_number (connect_counter
));
4609 AUTO_STRING (space_less_than
, " <");
4610 AUTO_STRING (greater_than
, ">");
4611 caller
= concat3 (space_less_than
, caller
, greater_than
);
4615 /* Create a new buffer name for this process if it doesn't have a
4616 filter. The new buffer name is based on the buffer name or
4617 process name of the server process concatenated with the caller
4620 if (!(EQ (ps
->filter
, Qinternal_default_process_filter
)
4621 || EQ (ps
->filter
, Qt
)))
4625 buffer
= ps
->buffer
;
4627 buffer
= Fbuffer_name (buffer
);
4632 buffer
= concat2 (buffer
, caller
);
4633 buffer
= Fget_buffer_create (buffer
);
4637 /* Generate a unique name for the new server process. Combine the
4638 server process name with the caller identification. */
4640 name
= concat2 (ps
->name
, caller
);
4641 proc
= make_process (name
);
4643 chan_process
[s
] = proc
;
4645 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4647 p
= XPROCESS (proc
);
4649 /* Build new contact information for this setup. */
4650 contact
= Fcopy_sequence (ps
->childp
);
4651 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4652 contact
= Fplist_put (contact
, QChost
, host
);
4653 if (!NILP (service
))
4654 contact
= Fplist_put (contact
, QCservice
, service
);
4655 contact
= Fplist_put (contact
, QCremote
,
4656 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4657 #ifdef HAVE_GETSOCKNAME
4659 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4660 contact
= Fplist_put (contact
, QClocal
,
4661 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4664 pset_childp (p
, contact
);
4665 pset_plist (p
, Fcopy_sequence (ps
->plist
));
4666 pset_type (p
, Qnetwork
);
4668 pset_buffer (p
, buffer
);
4669 pset_sentinel (p
, ps
->sentinel
);
4670 pset_filter (p
, ps
->filter
);
4671 pset_command (p
, Qnil
);
4674 /* Discard the unwind protect for closing S. */
4675 specpdl_ptr
= specpdl
+ count
;
4677 p
->open_fd
[SUBPROCESS_STDIN
] = s
;
4680 pset_status (p
, Qrun
);
4682 /* Client processes for accepted connections are not stopped initially. */
4683 if (!EQ (p
->filter
, Qt
))
4685 FD_SET (s
, &input_wait_mask
);
4686 FD_SET (s
, &non_keyboard_wait_mask
);
4689 if (s
> max_process_desc
)
4690 max_process_desc
= s
;
4692 /* Setup coding system for new process based on server process.
4693 This seems to be the proper thing to do, as the coding system
4694 of the new process should reflect the settings at the time the
4695 server socket was opened; not the current settings. */
4697 pset_decode_coding_system (p
, ps
->decode_coding_system
);
4698 pset_encode_coding_system (p
, ps
->encode_coding_system
);
4699 setup_process_coding_systems (proc
);
4701 pset_decoding_buf (p
, empty_unibyte_string
);
4702 p
->decoding_carryover
= 0;
4703 pset_encoding_buf (p
, empty_unibyte_string
);
4705 p
->inherit_coding_system_flag
4706 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4708 AUTO_STRING (dash
, "-");
4709 AUTO_STRING (nl
, "\n");
4710 Lisp_Object host_string
= STRINGP (host
) ? host
: dash
;
4712 if (!NILP (ps
->log
))
4714 AUTO_STRING (accept_from
, "accept from ");
4715 call3 (ps
->log
, server
, proc
, concat3 (accept_from
, host_string
, nl
));
4718 AUTO_STRING (open_from
, "open from ");
4719 exec_sentinel (proc
, concat3 (open_from
, host_string
, nl
));
4722 #ifdef HAVE_GETADDRINFO_A
4724 check_for_dns (Lisp_Object proc
)
4726 struct Lisp_Process
*p
= XPROCESS (proc
);
4727 Lisp_Object ip_addresses
= Qnil
;
4731 if (! p
->dns_request
)
4734 ret
= gai_error (p
->dns_request
);
4735 if (ret
== EAI_INPROGRESS
)
4738 /* We got a response. */
4741 struct addrinfo
*res
;
4743 for (res
= p
->dns_request
->ar_result
; res
; res
= res
->ai_next
)
4745 ip_addresses
= Fcons (conv_sockaddr_to_lisp
4746 (res
->ai_addr
, res
->ai_addrlen
),
4750 ip_addresses
= Fnreverse (ip_addresses
);
4752 /* The DNS lookup failed. */
4753 else if (EQ (p
->status
, Qconnect
))
4755 deactivate_process (proc
);
4756 pset_status (p
, (list2
4758 concat3 (build_string ("Name lookup of "),
4759 build_string (p
->dns_request
->ar_name
),
4760 build_string (" failed")))));
4763 free_dns_request (proc
);
4765 /* This process should not already be connected (or killed). */
4766 if (!EQ (p
->status
, Qconnect
))
4769 return ip_addresses
;
4772 #endif /* HAVE_GETADDRINFO_A */
4775 wait_for_socket_fds (Lisp_Object process
, char const *name
)
4777 while (XPROCESS (process
)->infd
< 0
4778 && EQ (XPROCESS (process
)->status
, Qconnect
))
4780 add_to_log ("Waiting for socket from %s...", build_string (name
));
4781 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4786 wait_while_connecting (Lisp_Object process
)
4788 while (EQ (XPROCESS (process
)->status
, Qconnect
))
4790 add_to_log ("Waiting for connection...");
4791 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4796 wait_for_tls_negotiation (Lisp_Object process
)
4799 while (XPROCESS (process
)->gnutls_p
4800 && XPROCESS (process
)->gnutls_initstage
!= GNUTLS_STAGE_READY
)
4802 add_to_log ("Waiting for TLS...");
4803 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4808 /* This variable is different from waiting_for_input in keyboard.c.
4809 It is used to communicate to a lisp process-filter/sentinel (via the
4810 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4811 for user-input when that process-filter was called.
4812 waiting_for_input cannot be used as that is by definition 0 when
4813 lisp code is being evalled.
4814 This is also used in record_asynch_buffer_change.
4815 For that purpose, this must be 0
4816 when not inside wait_reading_process_output. */
4817 static int waiting_for_user_input_p
;
4820 wait_reading_process_output_unwind (int data
)
4822 waiting_for_user_input_p
= data
;
4825 /* This is here so breakpoints can be put on it. */
4827 wait_reading_process_output_1 (void)
4831 /* Read and dispose of subprocess output while waiting for timeout to
4832 elapse and/or keyboard input to be available.
4836 If negative, gobble data immediately available but don't wait for any.
4839 an additional duration to wait, measured in nanoseconds
4840 If TIME_LIMIT is zero, then:
4841 If NSECS == 0, there is no limit.
4842 If NSECS > 0, the timeout consists of NSECS only.
4843 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
4846 0 to ignore keyboard input, or
4847 1 to return when input is available, or
4848 -1 meaning caller will actually read the input, so don't throw to
4849 the quit handler, or
4851 DO_DISPLAY means redisplay should be done to show subprocess
4852 output that arrives.
4854 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4855 (and gobble terminal input into the buffer if any arrives).
4857 If WAIT_PROC is specified, wait until something arrives from that
4860 If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC
4861 (suspending output from other processes). A negative value
4862 means don't run any timers either.
4864 Return positive if we received input from WAIT_PROC (or from any
4865 process if WAIT_PROC is null), zero if we attempted to receive
4866 input but got none, and negative if we didn't even try. */
4869 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
4871 Lisp_Object wait_for_cell
,
4872 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4882 struct timespec timeout
, end_time
, timer_delay
;
4883 struct timespec got_output_end_time
= invalid_timespec ();
4884 enum { MINIMUM
= -1, TIMEOUT
, INFINITY
} wait
;
4885 int got_some_output
= -1;
4886 ptrdiff_t count
= SPECPDL_INDEX ();
4888 /* Close to the current time if known, an invalid timespec otherwise. */
4889 struct timespec now
= invalid_timespec ();
4891 FD_ZERO (&Available
);
4894 if (time_limit
== 0 && nsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4895 && !(CONSP (wait_proc
->status
)
4896 && EQ (XCAR (wait_proc
->status
), Qexit
)))
4897 message1 ("Blocking call to accept-process-output with quit inhibited!!");
4899 record_unwind_protect_int (wait_reading_process_output_unwind
,
4900 waiting_for_user_input_p
);
4901 waiting_for_user_input_p
= read_kbd
;
4903 if (TYPE_MAXIMUM (time_t) < time_limit
)
4904 time_limit
= TYPE_MAXIMUM (time_t);
4906 if (time_limit
< 0 || nsecs
< 0)
4908 else if (time_limit
> 0 || nsecs
> 0)
4911 now
= current_timespec ();
4912 end_time
= timespec_add (now
, make_timespec (time_limit
, nsecs
));
4919 bool process_skipped
= false;
4921 /* If calling from keyboard input, do not quit
4922 since we want to return C-g as an input character.
4923 Otherwise, do pending quit if requested. */
4926 else if (pending_signals
)
4927 process_pending_signals ();
4929 /* Exit now if the cell we're waiting for became non-nil. */
4930 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4933 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
4935 Lisp_Object process_list_head
, aproc
;
4936 struct Lisp_Process
*p
;
4938 FOR_EACH_PROCESS(process_list_head
, aproc
)
4940 p
= XPROCESS (aproc
);
4942 if (! wait_proc
|| p
== wait_proc
)
4944 #ifdef HAVE_GETADDRINFO_A
4945 /* Check for pending DNS requests. */
4948 Lisp_Object ip_addresses
= check_for_dns (aproc
);
4949 if (!NILP (ip_addresses
) && !EQ (ip_addresses
, Qt
))
4950 connect_network_socket (aproc
, ip_addresses
);
4954 /* Continue TLS negotiation. */
4955 if (p
->gnutls_initstage
== GNUTLS_STAGE_HANDSHAKE_TRIED
4956 && p
->is_non_blocking_client
)
4958 gnutls_try_handshake (p
);
4959 p
->gnutls_handshakes_tried
++;
4961 if (p
->gnutls_initstage
== GNUTLS_STAGE_READY
)
4963 gnutls_verify_boot (aproc
, Qnil
);
4964 finish_after_tls_connection (aproc
);
4966 else if (p
->gnutls_handshakes_tried
4967 > GNUTLS_EMACS_HANDSHAKES_LIMIT
)
4969 deactivate_process (aproc
);
4970 pset_status (p
, list2 (Qfailed
,
4971 build_string ("TLS negotiation failed")));
4978 #endif /* GETADDRINFO_A or GNUTLS */
4980 /* Compute time from now till when time limit is up. */
4981 /* Exit if already run out. */
4982 if (wait
== TIMEOUT
)
4984 if (!timespec_valid_p (now
))
4985 now
= current_timespec ();
4986 if (timespec_cmp (end_time
, now
) <= 0)
4988 timeout
= timespec_sub (end_time
, now
);
4991 timeout
= make_timespec (wait
< TIMEOUT
? 0 : 100000, 0);
4993 /* Normally we run timers here.
4994 But not if wait_for_cell; in those cases,
4995 the wait is supposed to be short,
4996 and those callers cannot handle running arbitrary Lisp code here. */
4997 if (NILP (wait_for_cell
)
4998 && just_wait_proc
>= 0)
5002 unsigned old_timers_run
= timers_run
;
5003 struct buffer
*old_buffer
= current_buffer
;
5004 Lisp_Object old_window
= selected_window
;
5006 timer_delay
= timer_check ();
5008 /* If a timer has run, this might have changed buffers
5009 an alike. Make read_key_sequence aware of that. */
5010 if (timers_run
!= old_timers_run
5011 && (old_buffer
!= current_buffer
5012 || !EQ (old_window
, selected_window
))
5013 && waiting_for_user_input_p
== -1)
5014 record_asynch_buffer_change ();
5016 if (timers_run
!= old_timers_run
&& do_display
)
5017 /* We must retry, since a timer may have requeued itself
5018 and that could alter the time_delay. */
5019 redisplay_preserve_echo_area (9);
5023 while (!detect_input_pending ());
5025 /* If there is unread keyboard input, also return. */
5027 && requeued_events_pending_p ())
5030 /* This is so a breakpoint can be put here. */
5031 if (!timespec_valid_p (timer_delay
))
5032 wait_reading_process_output_1 ();
5035 /* Cause C-g and alarm signals to take immediate action,
5036 and cause input available signals to zero out timeout.
5038 It is important that we do this before checking for process
5039 activity. If we get a SIGCHLD after the explicit checks for
5040 process activity, timeout is the only way we will know. */
5042 set_waiting_for_input (&timeout
);
5044 /* If status of something has changed, and no input is
5045 available, notify the user of the change right away. After
5046 this explicit check, we'll let the SIGCHLD handler zap
5047 timeout to get our attention. */
5048 if (update_tick
!= process_tick
)
5053 if (kbd_on_hold_p ())
5056 Atemp
= input_wait_mask
;
5059 timeout
= make_timespec (0, 0);
5060 if ((pselect (max (max_process_desc
, max_input_desc
) + 1,
5062 #ifdef NON_BLOCKING_CONNECT
5063 (num_pending_connects
> 0 ? &Ctemp
: NULL
),
5067 NULL
, &timeout
, NULL
)
5070 /* It's okay for us to do this and then continue with
5071 the loop, since timeout has already been zeroed out. */
5072 clear_waiting_for_input ();
5073 got_some_output
= status_notify (NULL
, wait_proc
);
5074 if (do_display
) redisplay_preserve_echo_area (13);
5078 /* Don't wait for output from a non-running process. Just
5079 read whatever data has already been received. */
5080 if (wait_proc
&& wait_proc
->raw_status_new
)
5081 update_status (wait_proc
);
5083 && ! EQ (wait_proc
->status
, Qrun
)
5084 && ! EQ (wait_proc
->status
, Qconnect
))
5086 bool read_some_bytes
= false;
5088 clear_waiting_for_input ();
5090 /* If data can be read from the process, do so until exhausted. */
5091 if (wait_proc
->infd
>= 0)
5093 XSETPROCESS (proc
, wait_proc
);
5097 int nread
= read_process_output (proc
, wait_proc
->infd
);
5100 if (errno
== EIO
|| errno
== EAGAIN
)
5103 if (errno
== EWOULDBLOCK
)
5109 if (got_some_output
< nread
)
5110 got_some_output
= nread
;
5113 read_some_bytes
= true;
5118 if (read_some_bytes
&& do_display
)
5119 redisplay_preserve_echo_area (10);
5124 /* Wait till there is something to do. */
5126 if (wait_proc
&& just_wait_proc
)
5128 if (wait_proc
->infd
< 0) /* Terminated. */
5130 FD_SET (wait_proc
->infd
, &Available
);
5134 else if (!NILP (wait_for_cell
))
5136 Available
= non_process_wait_mask
;
5143 Available
= non_keyboard_wait_mask
;
5145 Available
= input_wait_mask
;
5146 Writeok
= write_mask
;
5147 check_delay
= wait_proc
? 0 : process_output_delay_count
;
5151 /* If frame size has changed or the window is newly mapped,
5152 redisplay now, before we start to wait. There is a race
5153 condition here; if a SIGIO arrives between now and the select
5154 and indicates that a frame is trashed, the select may block
5155 displaying a trashed screen. */
5156 if (frame_garbaged
&& do_display
)
5158 clear_waiting_for_input ();
5159 redisplay_preserve_echo_area (11);
5161 set_waiting_for_input (&timeout
);
5164 /* Skip the `select' call if input is available and we're
5165 waiting for keyboard input or a cell change (which can be
5166 triggered by processing X events). In the latter case, set
5167 nfds to 1 to avoid breaking the loop. */
5169 if ((read_kbd
|| !NILP (wait_for_cell
))
5170 && detect_input_pending ())
5172 nfds
= read_kbd
? 0 : 1;
5174 FD_ZERO (&Available
);
5178 /* Set the timeout for adaptive read buffering if any
5179 process has non-zero read_output_skip and non-zero
5180 read_output_delay, and we are not reading output for a
5181 specific process. It is not executed if
5182 Vprocess_adaptive_read_buffering is nil. */
5183 if (process_output_skip
&& check_delay
> 0)
5185 int adaptive_nsecs
= timeout
.tv_nsec
;
5186 if (timeout
.tv_sec
> 0 || adaptive_nsecs
> READ_OUTPUT_DELAY_MAX
)
5187 adaptive_nsecs
= READ_OUTPUT_DELAY_MAX
;
5188 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
5190 proc
= chan_process
[channel
];
5193 /* Find minimum non-zero read_output_delay among the
5194 processes with non-zero read_output_skip. */
5195 if (XPROCESS (proc
)->read_output_delay
> 0)
5198 if (!XPROCESS (proc
)->read_output_skip
)
5200 FD_CLR (channel
, &Available
);
5201 process_skipped
= true;
5202 XPROCESS (proc
)->read_output_skip
= 0;
5203 if (XPROCESS (proc
)->read_output_delay
< adaptive_nsecs
)
5204 adaptive_nsecs
= XPROCESS (proc
)->read_output_delay
;
5207 timeout
= make_timespec (0, adaptive_nsecs
);
5208 process_output_skip
= 0;
5211 /* If we've got some output and haven't limited our timeout
5212 with adaptive read buffering, limit it. */
5213 if (got_some_output
> 0 && !process_skipped
5215 || timeout
.tv_nsec
> READ_OUTPUT_DELAY_INCREMENT
))
5216 timeout
= make_timespec (0, READ_OUTPUT_DELAY_INCREMENT
);
5219 if (NILP (wait_for_cell
) && just_wait_proc
>= 0
5220 && timespec_valid_p (timer_delay
)
5221 && timespec_cmp (timer_delay
, timeout
) < 0)
5223 if (!timespec_valid_p (now
))
5224 now
= current_timespec ();
5225 struct timespec timeout_abs
= timespec_add (now
, timeout
);
5226 if (!timespec_valid_p (got_output_end_time
)
5227 || timespec_cmp (timeout_abs
, got_output_end_time
) < 0)
5228 got_output_end_time
= timeout_abs
;
5229 timeout
= timer_delay
;
5232 got_output_end_time
= invalid_timespec ();
5234 /* NOW can become inaccurate if time can pass during pselect. */
5235 if (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> 0)
5236 now
= invalid_timespec ();
5238 #if defined (HAVE_NS)
5240 #elif defined (HAVE_GLIB)
5245 (max (max_process_desc
, max_input_desc
) + 1,
5247 (check_write
? &Writeok
: 0),
5248 NULL
, &timeout
, NULL
);
5251 /* GnuTLS buffers data internally. In lowat mode it leaves
5252 some data in the TCP buffers so that select works, but
5253 with custom pull/push functions we need to check if some
5254 data is available in the buffers manually. */
5257 fd_set tls_available
;
5260 FD_ZERO (&tls_available
);
5263 /* We're not waiting on a specific process, so loop
5264 through all the channels and check for data.
5265 This is a workaround needed for some versions of
5266 the gnutls library -- 2.12.14 has been confirmed
5268 http://comments.gmane.org/gmane.emacs.devel/145074 */
5269 for (channel
= 0; channel
< FD_SETSIZE
; ++channel
)
5270 if (! NILP (chan_process
[channel
]))
5272 struct Lisp_Process
*p
=
5273 XPROCESS (chan_process
[channel
]);
5274 if (p
&& p
->gnutls_p
&& p
->gnutls_state
5275 && ((emacs_gnutls_record_check_pending
5280 eassert (p
->infd
== channel
);
5281 FD_SET (p
->infd
, &tls_available
);
5288 /* Check this specific channel. */
5289 if (wait_proc
->gnutls_p
/* Check for valid process. */
5290 && wait_proc
->gnutls_state
5291 /* Do we have pending data? */
5292 && ((emacs_gnutls_record_check_pending
5293 (wait_proc
->gnutls_state
))
5297 eassert (0 <= wait_proc
->infd
);
5298 /* Set to Available. */
5299 FD_SET (wait_proc
->infd
, &tls_available
);
5304 Available
= tls_available
;
5311 /* Make C-g and alarm signals set flags again. */
5312 clear_waiting_for_input ();
5314 /* If we woke up due to SIGWINCH, actually change size now. */
5315 do_pending_window_change (0);
5319 /* Exit the main loop if we've passed the requested timeout,
5320 or aren't skipping processes and got some output and
5321 haven't lowered our timeout due to timers or SIGIO and
5322 have waited a long amount of time due to repeated
5326 struct timespec cmp_time
5329 : (!process_skipped
&& got_some_output
> 0
5330 && (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> 0))
5331 ? got_output_end_time
5332 : invalid_timespec ());
5333 if (timespec_valid_p (cmp_time
))
5335 now
= current_timespec ();
5336 if (timespec_cmp (cmp_time
, now
) <= 0)
5343 if (xerrno
== EINTR
)
5345 else if (xerrno
== EBADF
)
5348 report_file_errno ("Failed select", Qnil
, xerrno
);
5351 /* Check for keyboard input. */
5352 /* If there is any, return immediately
5353 to give it higher priority than subprocesses. */
5357 unsigned old_timers_run
= timers_run
;
5358 struct buffer
*old_buffer
= current_buffer
;
5359 Lisp_Object old_window
= selected_window
;
5362 if (detect_input_pending_run_timers (do_display
))
5364 swallow_events (do_display
);
5365 if (detect_input_pending_run_timers (do_display
))
5369 /* If a timer has run, this might have changed buffers
5370 an alike. Make read_key_sequence aware of that. */
5371 if (timers_run
!= old_timers_run
5372 && waiting_for_user_input_p
== -1
5373 && (old_buffer
!= current_buffer
5374 || !EQ (old_window
, selected_window
)))
5375 record_asynch_buffer_change ();
5381 /* If there is unread keyboard input, also return. */
5383 && requeued_events_pending_p ())
5386 /* If we are not checking for keyboard input now,
5387 do process events (but don't run any timers).
5388 This is so that X events will be processed.
5389 Otherwise they may have to wait until polling takes place.
5390 That would causes delays in pasting selections, for example.
5392 (We used to do this only if wait_for_cell.) */
5393 if (read_kbd
== 0 && detect_input_pending ())
5395 swallow_events (do_display
);
5396 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5397 if (detect_input_pending ())
5402 /* Exit now if the cell we're waiting for became non-nil. */
5403 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5407 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5408 go read it. This can happen with X on BSD after logging out.
5409 In that case, there really is no input and no SIGIO,
5410 but select says there is input. */
5412 if (read_kbd
&& interrupt_input
5413 && keyboard_bit_set (&Available
) && ! noninteractive
)
5414 handle_input_available_signal (SIGIO
);
5417 /* If checking input just got us a size-change event from X,
5418 obey it now if we should. */
5419 if (read_kbd
|| ! NILP (wait_for_cell
))
5420 do_pending_window_change (0);
5422 /* Check for data from a process. */
5423 if (no_avail
|| nfds
== 0)
5426 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
5428 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
5430 && ((d
->condition
& FOR_READ
5431 && FD_ISSET (channel
, &Available
))
5432 || (d
->condition
& FOR_WRITE
5433 && FD_ISSET (channel
, &write_mask
))))
5434 d
->func (channel
, d
->data
);
5437 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5439 if (FD_ISSET (channel
, &Available
)
5440 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
5441 && !FD_ISSET (channel
, &non_process_wait_mask
))
5445 /* If waiting for this channel, arrange to return as
5446 soon as no more input to be processed. No more
5448 proc
= chan_process
[channel
];
5452 /* If this is a server stream socket, accept connection. */
5453 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5455 server_accept_connection (proc
, channel
);
5459 /* Read data from the process, starting with our
5460 buffered-ahead character if we have one. */
5462 nread
= read_process_output (proc
, channel
);
5463 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
))
5464 && got_some_output
< nread
)
5465 got_some_output
= nread
;
5468 /* Vacuum up any leftovers without waiting. */
5469 if (wait_proc
== XPROCESS (proc
))
5471 /* Since read_process_output can run a filter,
5472 which can call accept-process-output,
5473 don't try to read from any other processes
5474 before doing the select again. */
5475 FD_ZERO (&Available
);
5478 redisplay_preserve_echo_area (12);
5481 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5484 else if (nread
== -1 && errno
== EAGAIN
)
5487 /* FIXME: Is this special case still needed? */
5488 /* Note that we cannot distinguish between no input
5489 available now and a closed pipe.
5490 With luck, a closed pipe will be accompanied by
5491 subprocess termination and SIGCHLD. */
5492 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
)
5493 && !PIPECONN_P (proc
))
5497 /* On some OSs with ptys, when the process on one end of
5498 a pty exits, the other end gets an error reading with
5499 errno = EIO instead of getting an EOF (0 bytes read).
5500 Therefore, if we get an error reading and errno =
5501 EIO, just continue, because the child process has
5502 exited and should clean itself up soon (e.g. when we
5504 else if (nread
== -1 && errno
== EIO
)
5506 struct Lisp_Process
*p
= XPROCESS (proc
);
5508 /* Clear the descriptor now, so we only raise the
5510 FD_CLR (channel
, &input_wait_mask
);
5511 FD_CLR (channel
, &non_keyboard_wait_mask
);
5515 /* If the EIO occurs on a pty, the SIGCHLD handler's
5516 waitpid call will not find the process object to
5517 delete. Do it here. */
5518 p
->tick
= ++process_tick
;
5519 pset_status (p
, Qfailed
);
5522 #endif /* HAVE_PTYS */
5523 /* If we can detect process termination, don't consider the
5524 process gone just because its pipe is closed. */
5525 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
)
5526 && !PIPECONN_P (proc
))
5528 else if (nread
== 0 && PIPECONN_P (proc
))
5530 /* Preserve status of processes already terminated. */
5531 XPROCESS (proc
)->tick
= ++process_tick
;
5532 deactivate_process (proc
);
5533 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5534 pset_status (XPROCESS (proc
),
5535 list2 (Qexit
, make_number (0)));
5539 /* Preserve status of processes already terminated. */
5540 XPROCESS (proc
)->tick
= ++process_tick
;
5541 deactivate_process (proc
);
5542 if (XPROCESS (proc
)->raw_status_new
)
5543 update_status (XPROCESS (proc
));
5544 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5545 pset_status (XPROCESS (proc
),
5546 list2 (Qexit
, make_number (256)));
5549 #ifdef NON_BLOCKING_CONNECT
5550 if (FD_ISSET (channel
, &Writeok
)
5551 && FD_ISSET (channel
, &connect_wait_mask
))
5553 struct Lisp_Process
*p
;
5555 FD_CLR (channel
, &connect_wait_mask
);
5556 FD_CLR (channel
, &write_mask
);
5557 if (--num_pending_connects
< 0)
5560 proc
= chan_process
[channel
];
5564 p
= XPROCESS (proc
);
5567 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5568 So only use it on systems where it is known to work. */
5570 socklen_t xlen
= sizeof (xerrno
);
5571 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5576 struct sockaddr pname
;
5577 socklen_t pnamelen
= sizeof (pname
);
5579 /* If connection failed, getpeername will fail. */
5581 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
5583 /* Obtain connect failure code through error slippage. */
5586 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
5593 p
->tick
= ++process_tick
;
5594 pset_status (p
, list2 (Qfailed
, make_number (xerrno
)));
5595 deactivate_process (proc
);
5600 /* If we have an incompletely set up TLS connection,
5601 then defer the sentinel signalling until
5603 if (NILP (p
->gnutls_boot_parameters
)
5607 pset_status (p
, Qrun
);
5608 /* Execute the sentinel here. If we had relied on
5609 status_notify to do it later, it will read input
5610 from the process before calling the sentinel. */
5611 exec_sentinel (proc
, build_string ("open\n"));
5614 if (0 <= p
->infd
&& !EQ (p
->filter
, Qt
)
5615 && !EQ (p
->command
, Qt
))
5617 FD_SET (p
->infd
, &input_wait_mask
);
5618 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5622 #endif /* NON_BLOCKING_CONNECT */
5623 } /* End for each file descriptor. */
5624 } /* End while exit conditions not met. */
5626 unbind_to (count
, Qnil
);
5628 /* If calling from keyboard input, do not quit
5629 since we want to return C-g as an input character.
5630 Otherwise, do pending quit if requested. */
5633 /* Prevent input_pending from remaining set if we quit. */
5634 clear_input_pending ();
5638 return got_some_output
;
5641 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5644 read_process_output_call (Lisp_Object fun_and_args
)
5646 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5650 read_process_output_error_handler (Lisp_Object error_val
)
5652 cmd_error_internal (error_val
, "error in process filter: ");
5654 update_echo_area ();
5655 Fsleep_for (make_number (2), Qnil
);
5660 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5662 struct coding_system
*coding
);
5664 /* Read pending output from the process channel,
5665 starting with our buffered-ahead character if we have one.
5666 Yield number of decoded characters read.
5668 This function reads at most 4096 characters.
5669 If you want to read all available subprocess output,
5670 you must call it repeatedly until it returns zero.
5672 The characters read are decoded according to PROC's coding-system
5676 read_process_output (Lisp_Object proc
, int channel
)
5679 struct Lisp_Process
*p
= XPROCESS (proc
);
5680 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5681 int carryover
= p
->decoding_carryover
;
5682 enum { readmax
= 4096 };
5683 ptrdiff_t count
= SPECPDL_INDEX ();
5684 Lisp_Object odeactivate
;
5685 char chars
[sizeof coding
->carryover
+ readmax
];
5688 /* See the comment above. */
5689 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
5691 #ifdef DATAGRAM_SOCKETS
5692 /* We have a working select, so proc_buffered_char is always -1. */
5693 if (DATAGRAM_CHAN_P (channel
))
5695 socklen_t len
= datagram_address
[channel
].len
;
5696 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5697 0, datagram_address
[channel
].sa
, &len
);
5702 bool buffered
= proc_buffered_char
[channel
] >= 0;
5705 chars
[carryover
] = proc_buffered_char
[channel
];
5706 proc_buffered_char
[channel
] = -1;
5709 if (p
->gnutls_p
&& p
->gnutls_state
)
5710 nbytes
= emacs_gnutls_read (p
, chars
+ carryover
+ buffered
,
5711 readmax
- buffered
);
5714 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5715 readmax
- buffered
);
5716 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5718 int delay
= p
->read_output_delay
;
5721 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5724 process_output_delay_count
++;
5725 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5728 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5730 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5732 process_output_delay_count
--;
5734 p
->read_output_delay
= delay
;
5737 p
->read_output_skip
= 1;
5738 process_output_skip
= 1;
5742 nbytes
+= buffered
&& nbytes
<= 0;
5745 p
->decoding_carryover
= 0;
5747 /* At this point, NBYTES holds number of bytes just received
5748 (including the one in proc_buffered_char[channel]). */
5751 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5753 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5756 /* Now set NBYTES how many bytes we must decode. */
5757 nbytes
+= carryover
;
5759 odeactivate
= Vdeactivate_mark
;
5760 /* There's no good reason to let process filters change the current
5761 buffer, and many callers of accept-process-output, sit-for, and
5762 friends don't expect current-buffer to be changed from under them. */
5763 record_unwind_current_buffer ();
5765 read_and_dispose_of_process_output (p
, chars
, nbytes
, coding
);
5767 /* Handling the process output should not deactivate the mark. */
5768 Vdeactivate_mark
= odeactivate
;
5770 unbind_to (count
, Qnil
);
5775 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5777 struct coding_system
*coding
)
5779 Lisp_Object outstream
= p
->filter
;
5781 bool outer_running_asynch_code
= running_asynch_code
;
5782 int waiting
= waiting_for_user_input_p
;
5785 Lisp_Object obuffer
, okeymap
;
5786 XSETBUFFER (obuffer
, current_buffer
);
5787 okeymap
= BVAR (current_buffer
, keymap
);
5790 /* We inhibit quit here instead of just catching it so that
5791 hitting ^G when a filter happens to be running won't screw
5793 specbind (Qinhibit_quit
, Qt
);
5794 specbind (Qlast_nonmenu_event
, Qt
);
5796 /* In case we get recursively called,
5797 and we already saved the match data nonrecursively,
5798 save the same match data in safely recursive fashion. */
5799 if (outer_running_asynch_code
)
5802 /* Don't clobber the CURRENT match data, either! */
5803 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5804 restore_search_regs ();
5805 record_unwind_save_match_data ();
5806 Fset_match_data (tem
, Qt
);
5809 /* For speed, if a search happens within this code,
5810 save the match data in a special nonrecursive fashion. */
5811 running_asynch_code
= 1;
5813 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5814 text
= coding
->dst_object
;
5815 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5816 /* A new coding system might be found. */
5817 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5819 pset_decode_coding_system (p
, Vlast_coding_system_used
);
5821 /* Don't call setup_coding_system for
5822 proc_decode_coding_system[channel] here. It is done in
5823 detect_coding called via decode_coding above. */
5825 /* If a coding system for encoding is not yet decided, we set
5826 it as the same as coding-system for decoding.
5828 But, before doing that we must check if
5829 proc_encode_coding_system[p->outfd] surely points to a
5830 valid memory because p->outfd will be changed once EOF is
5831 sent to the process. */
5832 if (NILP (p
->encode_coding_system
) && p
->outfd
>= 0
5833 && proc_encode_coding_system
[p
->outfd
])
5835 pset_encode_coding_system
5836 (p
, coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
));
5837 setup_coding_system (p
->encode_coding_system
,
5838 proc_encode_coding_system
[p
->outfd
]);
5842 if (coding
->carryover_bytes
> 0)
5844 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5845 pset_decoding_buf (p
, make_uninit_string (coding
->carryover_bytes
));
5846 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5847 coding
->carryover_bytes
);
5848 p
->decoding_carryover
= coding
->carryover_bytes
;
5850 if (SBYTES (text
) > 0)
5851 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5852 sometimes it's simply wrong to wrap (e.g. when called from
5853 accept-process-output). */
5854 internal_condition_case_1 (read_process_output_call
,
5855 list3 (outstream
, make_lisp_proc (p
), text
),
5856 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5857 read_process_output_error_handler
);
5859 /* If we saved the match data nonrecursively, restore it now. */
5860 restore_search_regs ();
5861 running_asynch_code
= outer_running_asynch_code
;
5863 /* Restore waiting_for_user_input_p as it was
5864 when we were called, in case the filter clobbered it. */
5865 waiting_for_user_input_p
= waiting
;
5867 #if 0 /* Call record_asynch_buffer_change unconditionally,
5868 because we might have changed minor modes or other things
5869 that affect key bindings. */
5870 if (! EQ (Fcurrent_buffer (), obuffer
)
5871 || ! EQ (current_buffer
->keymap
, okeymap
))
5873 /* But do it only if the caller is actually going to read events.
5874 Otherwise there's no need to make him wake up, and it could
5875 cause trouble (for example it would make sit_for return). */
5876 if (waiting_for_user_input_p
== -1)
5877 record_asynch_buffer_change ();
5880 DEFUN ("internal-default-process-filter", Finternal_default_process_filter
,
5881 Sinternal_default_process_filter
, 2, 2, 0,
5882 doc
: /* Function used as default process filter.
5883 This inserts the process's output into its buffer, if there is one.
5884 Otherwise it discards the output. */)
5885 (Lisp_Object proc
, Lisp_Object text
)
5887 struct Lisp_Process
*p
;
5890 CHECK_PROCESS (proc
);
5891 p
= XPROCESS (proc
);
5892 CHECK_STRING (text
);
5894 if (!NILP (p
->buffer
) && BUFFER_LIVE_P (XBUFFER (p
->buffer
)))
5896 Lisp_Object old_read_only
;
5897 ptrdiff_t old_begv
, old_zv
;
5898 ptrdiff_t old_begv_byte
, old_zv_byte
;
5899 ptrdiff_t before
, before_byte
;
5900 ptrdiff_t opoint_byte
;
5903 Fset_buffer (p
->buffer
);
5905 opoint_byte
= PT_BYTE
;
5906 old_read_only
= BVAR (current_buffer
, read_only
);
5909 old_begv_byte
= BEGV_BYTE
;
5910 old_zv_byte
= ZV_BYTE
;
5912 bset_read_only (current_buffer
, Qnil
);
5914 /* Insert new output into buffer at the current end-of-output
5915 marker, thus preserving logical ordering of input and output. */
5916 if (XMARKER (p
->mark
)->buffer
)
5917 set_point_from_marker (p
->mark
);
5919 SET_PT_BOTH (ZV
, ZV_BYTE
);
5921 before_byte
= PT_BYTE
;
5923 /* If the output marker is outside of the visible region, save
5924 the restriction and widen. */
5925 if (! (BEGV
<= PT
&& PT
<= ZV
))
5928 /* Adjust the multibyteness of TEXT to that of the buffer. */
5929 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5930 != ! STRING_MULTIBYTE (text
))
5931 text
= (STRING_MULTIBYTE (text
)
5932 ? Fstring_as_unibyte (text
)
5933 : Fstring_to_multibyte (text
));
5934 /* Insert before markers in case we are inserting where
5935 the buffer's mark is, and the user's next command is Meta-y. */
5936 insert_from_string_before_markers (text
, 0, 0,
5937 SCHARS (text
), SBYTES (text
), 0);
5939 /* Make sure the process marker's position is valid when the
5940 process buffer is changed in the signal_after_change above.
5941 W3 is known to do that. */
5942 if (BUFFERP (p
->buffer
)
5943 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5944 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5946 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5948 update_mode_lines
= 23;
5950 /* Make sure opoint and the old restrictions
5951 float ahead of any new text just as point would. */
5952 if (opoint
>= before
)
5954 opoint
+= PT
- before
;
5955 opoint_byte
+= PT_BYTE
- before_byte
;
5957 if (old_begv
> before
)
5959 old_begv
+= PT
- before
;
5960 old_begv_byte
+= PT_BYTE
- before_byte
;
5962 if (old_zv
>= before
)
5964 old_zv
+= PT
- before
;
5965 old_zv_byte
+= PT_BYTE
- before_byte
;
5968 /* If the restriction isn't what it should be, set it. */
5969 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5970 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5972 bset_read_only (current_buffer
, old_read_only
);
5973 SET_PT_BOTH (opoint
, opoint_byte
);
5978 /* Sending data to subprocess. */
5980 /* In send_process, when a write fails temporarily,
5981 wait_reading_process_output is called. It may execute user code,
5982 e.g. timers, that attempts to write new data to the same process.
5983 We must ensure that data is sent in the right order, and not
5984 interspersed half-completed with other writes (Bug#10815). This is
5985 handled by the write_queue element of struct process. It is a list
5986 with each entry having the form
5988 (string . (offset . length))
5990 where STRING is a lisp string, OFFSET is the offset into the
5991 string's byte sequence from which we should begin to send, and
5992 LENGTH is the number of bytes left to send. */
5994 /* Create a new entry in write_queue.
5995 INPUT_OBJ should be a buffer, string Qt, or Qnil.
5996 BUF is a pointer to the string sequence of the input_obj or a C
5997 string in case of Qt or Qnil. */
6000 write_queue_push (struct Lisp_Process
*p
, Lisp_Object input_obj
,
6001 const char *buf
, ptrdiff_t len
, bool front
)
6004 Lisp_Object entry
, obj
;
6006 if (STRINGP (input_obj
))
6008 offset
= buf
- SSDATA (input_obj
);
6014 obj
= make_unibyte_string (buf
, len
);
6017 entry
= Fcons (obj
, Fcons (make_number (offset
), make_number (len
)));
6020 pset_write_queue (p
, Fcons (entry
, p
->write_queue
));
6022 pset_write_queue (p
, nconc2 (p
->write_queue
, list1 (entry
)));
6025 /* Remove the first element in the write_queue of process P, put its
6026 contents in OBJ, BUF and LEN, and return true. If the
6027 write_queue is empty, return false. */
6030 write_queue_pop (struct Lisp_Process
*p
, Lisp_Object
*obj
,
6031 const char **buf
, ptrdiff_t *len
)
6033 Lisp_Object entry
, offset_length
;
6036 if (NILP (p
->write_queue
))
6039 entry
= XCAR (p
->write_queue
);
6040 pset_write_queue (p
, XCDR (p
->write_queue
));
6042 *obj
= XCAR (entry
);
6043 offset_length
= XCDR (entry
);
6045 *len
= XINT (XCDR (offset_length
));
6046 offset
= XINT (XCAR (offset_length
));
6047 *buf
= SSDATA (*obj
) + offset
;
6052 /* Send some data to process PROC.
6053 BUF is the beginning of the data; LEN is the number of characters.
6054 OBJECT is the Lisp object that the data comes from. If OBJECT is
6055 nil or t, it means that the data comes from C string.
6057 If OBJECT is not nil, the data is encoded by PROC's coding-system
6058 for encoding before it is sent.
6060 This function can evaluate Lisp code and can garbage collect. */
6063 send_process (Lisp_Object proc
, const char *buf
, ptrdiff_t len
,
6066 struct Lisp_Process
*p
= XPROCESS (proc
);
6068 struct coding_system
*coding
;
6070 if (NETCONN_P (proc
))
6072 wait_while_connecting (proc
);
6073 wait_for_tls_negotiation (proc
);
6076 if (p
->raw_status_new
)
6078 if (! EQ (p
->status
, Qrun
))
6079 error ("Process %s not running", SDATA (p
->name
));
6081 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
6083 coding
= proc_encode_coding_system
[p
->outfd
];
6084 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
6086 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
6087 || (BUFFERP (object
)
6088 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
6091 pset_encode_coding_system
6092 (p
, complement_process_encoding_system (p
->encode_coding_system
));
6093 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
6095 /* The coding system for encoding was changed to raw-text
6096 because we sent a unibyte text previously. Now we are
6097 sending a multibyte text, thus we must encode it by the
6098 original coding system specified for the current process.
6100 Another reason we come here is that the coding system
6101 was just complemented and a new one was returned by
6102 complement_process_encoding_system. */
6103 setup_coding_system (p
->encode_coding_system
, coding
);
6104 Vlast_coding_system_used
= p
->encode_coding_system
;
6106 coding
->src_multibyte
= 1;
6110 coding
->src_multibyte
= 0;
6111 /* For sending a unibyte text, character code conversion should
6112 not take place but EOL conversion should. So, setup raw-text
6113 or one of the subsidiary if we have not yet done it. */
6114 if (CODING_REQUIRE_ENCODING (coding
))
6116 if (CODING_REQUIRE_FLUSHING (coding
))
6118 /* But, before changing the coding, we must flush out data. */
6119 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6120 send_process (proc
, "", 0, Qt
);
6121 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
6123 setup_coding_system (raw_text_coding_system
6124 (Vlast_coding_system_used
),
6126 coding
->src_multibyte
= 0;
6129 coding
->dst_multibyte
= 0;
6131 if (CODING_REQUIRE_ENCODING (coding
))
6133 coding
->dst_object
= Qt
;
6134 if (BUFFERP (object
))
6136 ptrdiff_t from_byte
, from
, to
;
6137 ptrdiff_t save_pt
, save_pt_byte
;
6138 struct buffer
*cur
= current_buffer
;
6140 set_buffer_internal (XBUFFER (object
));
6141 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
6143 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
6144 from
= BYTE_TO_CHAR (from_byte
);
6145 to
= BYTE_TO_CHAR (from_byte
+ len
);
6146 TEMP_SET_PT_BOTH (from
, from_byte
);
6147 encode_coding_object (coding
, object
, from
, from_byte
,
6148 to
, from_byte
+ len
, Qt
);
6149 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
6150 set_buffer_internal (cur
);
6152 else if (STRINGP (object
))
6154 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
6155 SBYTES (object
), Qt
);
6159 coding
->dst_object
= make_unibyte_string (buf
, len
);
6160 coding
->produced
= len
;
6163 len
= coding
->produced
;
6164 object
= coding
->dst_object
;
6165 buf
= SSDATA (object
);
6168 /* If there is already data in the write_queue, put the new data
6169 in the back of queue. Otherwise, ignore it. */
6170 if (!NILP (p
->write_queue
))
6171 write_queue_push (p
, object
, buf
, len
, 0);
6173 do /* while !NILP (p->write_queue) */
6175 ptrdiff_t cur_len
= -1;
6176 const char *cur_buf
;
6177 Lisp_Object cur_object
;
6179 /* If write_queue is empty, ignore it. */
6180 if (!write_queue_pop (p
, &cur_object
, &cur_buf
, &cur_len
))
6184 cur_object
= object
;
6189 /* Send this batch, using one or more write calls. */
6190 ptrdiff_t written
= 0;
6191 int outfd
= p
->outfd
;
6192 #ifdef DATAGRAM_SOCKETS
6193 if (DATAGRAM_CHAN_P (outfd
))
6195 rv
= sendto (outfd
, cur_buf
, cur_len
,
6196 0, datagram_address
[outfd
].sa
,
6197 datagram_address
[outfd
].len
);
6200 else if (errno
== EMSGSIZE
)
6201 report_file_error ("Sending datagram", proc
);
6207 if (p
->gnutls_p
&& p
->gnutls_state
)
6208 written
= emacs_gnutls_write (p
, cur_buf
, cur_len
);
6211 written
= emacs_write_sig (outfd
, cur_buf
, cur_len
);
6212 rv
= (written
? 0 : -1);
6213 if (p
->read_output_delay
> 0
6214 && p
->adaptive_read_buffering
== 1)
6216 p
->read_output_delay
= 0;
6217 process_output_delay_count
--;
6218 p
->read_output_skip
= 0;
6226 || errno
== EWOULDBLOCK
6229 /* Buffer is full. Wait, accepting input;
6230 that may allow the program
6231 to finish doing output and read more. */
6233 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
6234 /* A gross hack to work around a bug in FreeBSD.
6235 In the following sequence, read(2) returns
6239 write(2) 954 bytes, get EAGAIN
6240 read(2) 1024 bytes in process_read_output
6241 read(2) 11 bytes in process_read_output
6243 That is, read(2) returns more bytes than have
6244 ever been written successfully. The 1033 bytes
6245 read are the 1022 bytes written successfully
6246 after processing (for example with CRs added if
6247 the terminal is set up that way which it is
6248 here). The same bytes will be seen again in a
6249 later read(2), without the CRs. */
6251 if (errno
== EAGAIN
)
6254 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
6256 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
6258 /* Put what we should have written in wait_queue. */
6259 write_queue_push (p
, cur_object
, cur_buf
, cur_len
, 1);
6260 wait_reading_process_output (0, 20 * 1000 * 1000,
6261 0, 0, Qnil
, NULL
, 0);
6262 /* Reread queue, to see what is left. */
6265 else if (errno
== EPIPE
)
6267 p
->raw_status_new
= 0;
6268 pset_status (p
, list2 (Qexit
, make_number (256)));
6269 p
->tick
= ++process_tick
;
6270 deactivate_process (proc
);
6271 error ("process %s no longer connected to pipe; closed it",
6275 /* This is a real error. */
6276 report_file_error ("Writing to process", proc
);
6282 while (!NILP (p
->write_queue
));
6285 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
6287 doc
: /* Send current contents of region as input to PROCESS.
6288 PROCESS may be a process, a buffer, the name of a process or buffer, or
6289 nil, indicating the current buffer's process.
6290 Called from program, takes three arguments, PROCESS, START and END.
6291 If the region is more than 500 characters long,
6292 it is sent in several bunches. This may happen even for shorter regions.
6293 Output from processes can arrive in between bunches.
6295 If PROCESS is a non-blocking network process that hasn't been fully
6296 set up yet, this function will block until socket setup has completed. */)
6297 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
6299 Lisp_Object proc
= get_process (process
);
6300 ptrdiff_t start_byte
, end_byte
;
6302 validate_region (&start
, &end
);
6304 start_byte
= CHAR_TO_BYTE (XINT (start
));
6305 end_byte
= CHAR_TO_BYTE (XINT (end
));
6307 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
6308 move_gap_both (XINT (start
), start_byte
);
6310 if (NETCONN_P (proc
))
6311 wait_while_connecting (proc
);
6313 send_process (proc
, (char *) BYTE_POS_ADDR (start_byte
),
6314 end_byte
- start_byte
, Fcurrent_buffer ());
6319 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
6321 doc
: /* Send PROCESS the contents of STRING as input.
6322 PROCESS may be a process, a buffer, the name of a process or buffer, or
6323 nil, indicating the current buffer's process.
6324 If STRING is more than 500 characters long,
6325 it is sent in several bunches. This may happen even for shorter strings.
6326 Output from processes can arrive in between bunches.
6328 If PROCESS is a non-blocking network process that hasn't been fully
6329 set up yet, this function will block until socket setup has completed. */)
6330 (Lisp_Object process
, Lisp_Object string
)
6332 CHECK_STRING (string
);
6333 Lisp_Object proc
= get_process (process
);
6334 send_process (proc
, SSDATA (string
),
6335 SBYTES (string
), string
);
6339 /* Return the foreground process group for the tty/pty that
6340 the process P uses. */
6342 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
6347 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
6350 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
6351 master side. Try the slave side. */
6352 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
6356 ioctl (fd
, TIOCGPGRP
, &gid
);
6360 #endif /* defined (TIOCGPGRP ) */
6365 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
6366 Sprocess_running_child_p
, 0, 1, 0,
6367 doc
: /* Return non-nil if PROCESS has given the terminal to a
6368 child. If the operating system does not make it possible to find out,
6369 return t. If we can find out, return the numeric ID of the foreground
6371 (Lisp_Object process
)
6373 /* Initialize in case ioctl doesn't exist or gives an error,
6374 in a way that will cause returning t. */
6375 Lisp_Object proc
= get_process (process
);
6376 struct Lisp_Process
*p
= XPROCESS (proc
);
6378 if (!EQ (p
->type
, Qreal
))
6379 error ("Process %s is not a subprocess",
6382 error ("Process %s is not active",
6385 pid_t gid
= emacs_get_tty_pgrp (p
);
6390 return make_number (gid
);
6394 /* Send a signal number SIGNO to PROCESS.
6395 If CURRENT_GROUP is t, that means send to the process group
6396 that currently owns the terminal being used to communicate with PROCESS.
6397 This is used for various commands in shell mode.
6398 If CURRENT_GROUP is lambda, that means send to the process group
6399 that currently owns the terminal, but only if it is NOT the shell itself.
6401 If NOMSG is false, insert signal-announcements into process's buffers
6404 If we can, we try to signal PROCESS by sending control characters
6405 down the pty. This allows us to signal inferiors who have changed
6406 their uid, for which kill would return an EPERM error. */
6409 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
6413 struct Lisp_Process
*p
;
6417 proc
= get_process (process
);
6418 p
= XPROCESS (proc
);
6420 if (!EQ (p
->type
, Qreal
))
6421 error ("Process %s is not a subprocess",
6424 error ("Process %s is not active",
6428 current_group
= Qnil
;
6430 /* If we are using pgrps, get a pgrp number and make it negative. */
6431 if (NILP (current_group
))
6432 /* Send the signal to the shell's process group. */
6436 #ifdef SIGNALS_VIA_CHARACTERS
6437 /* If possible, send signals to the entire pgrp
6438 by sending an input character to it. */
6441 cc_t
*sig_char
= NULL
;
6443 tcgetattr (p
->infd
, &t
);
6448 sig_char
= &t
.c_cc
[VINTR
];
6452 sig_char
= &t
.c_cc
[VQUIT
];
6456 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
6457 sig_char
= &t
.c_cc
[VSWTCH
];
6459 sig_char
= &t
.c_cc
[VSUSP
];
6464 if (sig_char
&& *sig_char
!= CDISABLE
)
6466 send_process (proc
, (char *) sig_char
, 1, Qnil
);
6469 /* If we can't send the signal with a character,
6470 fall through and send it another way. */
6472 /* The code above may fall through if it can't
6473 handle the signal. */
6474 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6477 /* Get the current pgrp using the tty itself, if we have that.
6478 Otherwise, use the pty to get the pgrp.
6479 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6480 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6481 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6482 His patch indicates that if TIOCGPGRP returns an error, then
6483 we should just assume that p->pid is also the process group id. */
6485 gid
= emacs_get_tty_pgrp (p
);
6488 /* If we can't get the information, assume
6489 the shell owns the tty. */
6492 /* It is not clear whether anything really can set GID to -1.
6493 Perhaps on some system one of those ioctls can or could do so.
6494 Or perhaps this is vestigial. */
6497 #else /* ! defined (TIOCGPGRP) */
6498 /* Can't select pgrps on this system, so we know that
6499 the child itself heads the pgrp. */
6501 #endif /* ! defined (TIOCGPGRP) */
6503 /* If current_group is lambda, and the shell owns the terminal,
6504 don't send any signal. */
6505 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6510 if (signo
== SIGCONT
)
6512 p
->raw_status_new
= 0;
6513 pset_status (p
, Qrun
);
6514 p
->tick
= ++process_tick
;
6517 status_notify (NULL
, NULL
);
6518 redisplay_preserve_echo_area (13);
6524 /* Work around a HP-UX 7.0 bug that mishandles signals to subjobs.
6525 We don't know whether the bug is fixed in later HP-UX versions. */
6526 if (! NILP (current_group
) && ioctl (p
->infd
, TIOCSIGSEND
, signo
) != -1)
6530 /* If we don't have process groups, send the signal to the immediate
6531 subprocess. That isn't really right, but it's better than any
6532 obvious alternative. */
6533 pid_t pid
= no_pgrp
? gid
: - gid
;
6535 /* Do not kill an already-reaped process, as that could kill an
6536 innocent bystander that happens to have the same process ID. */
6538 block_child_signal (&oldset
);
6541 unblock_child_signal (&oldset
);
6544 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6545 doc
: /* Interrupt process PROCESS.
6546 PROCESS may be a process, a buffer, or the name of a process or buffer.
6547 No arg or nil means current buffer's process.
6548 Second arg CURRENT-GROUP non-nil means send signal to
6549 the current process-group of the process's controlling terminal
6550 rather than to the process's own process group.
6551 If the process is a shell, this means interrupt current subjob
6552 rather than the shell.
6554 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6555 don't send the signal. */)
6556 (Lisp_Object process
, Lisp_Object current_group
)
6558 process_send_signal (process
, SIGINT
, current_group
, 0);
6562 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6563 doc
: /* Kill process PROCESS. May be process or name of one.
6564 See function `interrupt-process' for more details on usage. */)
6565 (Lisp_Object process
, Lisp_Object current_group
)
6567 process_send_signal (process
, SIGKILL
, current_group
, 0);
6571 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6572 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6573 See function `interrupt-process' for more details on usage. */)
6574 (Lisp_Object process
, Lisp_Object current_group
)
6576 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6580 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6581 doc
: /* Stop process PROCESS. May be process or name of one.
6582 See function `interrupt-process' for more details on usage.
6583 If PROCESS is a network or serial process, inhibit handling of incoming
6585 (Lisp_Object process
, Lisp_Object current_group
)
6587 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)
6588 || PIPECONN_P (process
)))
6590 struct Lisp_Process
*p
;
6592 p
= XPROCESS (process
);
6593 if (NILP (p
->command
)
6596 FD_CLR (p
->infd
, &input_wait_mask
);
6597 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6599 pset_command (p
, Qt
);
6603 error ("No SIGTSTP support");
6605 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6610 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6611 doc
: /* Continue process PROCESS. May be process or name of one.
6612 See function `interrupt-process' for more details on usage.
6613 If PROCESS is a network or serial process, resume handling of incoming
6615 (Lisp_Object process
, Lisp_Object current_group
)
6617 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)
6618 || PIPECONN_P (process
)))
6620 struct Lisp_Process
*p
;
6622 p
= XPROCESS (process
);
6623 if (EQ (p
->command
, Qt
)
6625 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6627 FD_SET (p
->infd
, &input_wait_mask
);
6628 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6630 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6631 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6632 #else /* not WINDOWSNT */
6633 tcflush (p
->infd
, TCIFLUSH
);
6634 #endif /* not WINDOWSNT */
6636 pset_command (p
, Qnil
);
6640 process_send_signal (process
, SIGCONT
, current_group
, 0);
6642 error ("No SIGCONT support");
6647 /* Return the integer value of the signal whose abbreviation is ABBR,
6648 or a negative number if there is no such signal. */
6650 abbr_to_signal (char const *name
)
6653 char sigbuf
[20]; /* Large enough for all valid signal abbreviations. */
6655 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6658 for (i
= 0; i
< sizeof sigbuf
; i
++)
6660 sigbuf
[i
] = c_toupper (name
[i
]);
6662 return str2sig (sigbuf
, &signo
) == 0 ? signo
: -1;
6668 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6669 2, 2, "sProcess (name or number): \nnSignal code: ",
6670 doc
: /* Send PROCESS the signal with code SIGCODE.
6671 PROCESS may also be a number specifying the process id of the
6672 process to signal; in this case, the process need not be a child of
6674 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6675 (Lisp_Object process
, Lisp_Object sigcode
)
6680 if (STRINGP (process
))
6682 Lisp_Object tem
= Fget_process (process
);
6685 Lisp_Object process_number
6686 = string_to_number (SSDATA (process
), 10, 1);
6687 if (NUMBERP (process_number
))
6688 tem
= process_number
;
6692 else if (!NUMBERP (process
))
6693 process
= get_process (process
);
6698 if (NUMBERP (process
))
6699 CONS_TO_INTEGER (process
, pid_t
, pid
);
6702 CHECK_PROCESS (process
);
6703 pid
= XPROCESS (process
)->pid
;
6705 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6708 if (INTEGERP (sigcode
))
6710 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
6711 signo
= XINT (sigcode
);
6717 CHECK_SYMBOL (sigcode
);
6718 name
= SSDATA (SYMBOL_NAME (sigcode
));
6720 signo
= abbr_to_signal (name
);
6722 error ("Undefined signal name %s", name
);
6725 return make_number (kill (pid
, signo
));
6728 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6729 doc
: /* Make PROCESS see end-of-file in its input.
6730 EOF comes after any text already sent to it.
6731 PROCESS may be a process, a buffer, the name of a process or buffer, or
6732 nil, indicating the current buffer's process.
6733 If PROCESS is a network connection, or is a process communicating
6734 through a pipe (as opposed to a pty), then you cannot send any more
6735 text to PROCESS after you call this function.
6736 If PROCESS is a serial process, wait until all output written to the
6737 process has been transmitted to the serial port. */)
6738 (Lisp_Object process
)
6741 struct coding_system
*coding
= NULL
;
6744 proc
= get_process (process
);
6746 if (NETCONN_P (proc
))
6747 wait_while_connecting (proc
);
6749 if (DATAGRAM_CONN_P (proc
))
6753 outfd
= XPROCESS (proc
)->outfd
;
6755 coding
= proc_encode_coding_system
[outfd
];
6757 /* Make sure the process is really alive. */
6758 if (XPROCESS (proc
)->raw_status_new
)
6759 update_status (XPROCESS (proc
));
6760 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6761 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6763 if (coding
&& CODING_REQUIRE_FLUSHING (coding
))
6765 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6766 send_process (proc
, "", 0, Qnil
);
6769 if (XPROCESS (proc
)->pty_flag
)
6770 send_process (proc
, "\004", 1, Qnil
);
6771 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6774 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6775 report_file_error ("Failed tcdrain", Qnil
);
6776 #endif /* not WINDOWSNT */
6777 /* Do nothing on Windows because writes are blocking. */
6781 struct Lisp_Process
*p
= XPROCESS (proc
);
6782 int old_outfd
= p
->outfd
;
6785 #ifdef HAVE_SHUTDOWN
6786 /* If this is a network connection, or socketpair is used
6787 for communication with the subprocess, call shutdown to cause EOF.
6788 (In some old system, shutdown to socketpair doesn't work.
6789 Then we just can't win.) */
6791 && (EQ (p
->type
, Qnetwork
) || p
->infd
== old_outfd
))
6792 shutdown (old_outfd
, 1);
6794 close_process_fd (&p
->open_fd
[WRITE_TO_SUBPROCESS
]);
6795 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6797 report_file_error ("Opening null device", Qnil
);
6798 p
->open_fd
[WRITE_TO_SUBPROCESS
] = new_outfd
;
6799 p
->outfd
= new_outfd
;
6801 if (!proc_encode_coding_system
[new_outfd
])
6802 proc_encode_coding_system
[new_outfd
]
6803 = xmalloc (sizeof (struct coding_system
));
6806 *proc_encode_coding_system
[new_outfd
]
6807 = *proc_encode_coding_system
[old_outfd
];
6808 memset (proc_encode_coding_system
[old_outfd
], 0,
6809 sizeof (struct coding_system
));
6812 setup_coding_system (p
->encode_coding_system
,
6813 proc_encode_coding_system
[new_outfd
]);
6818 /* The main Emacs thread records child processes in three places:
6820 - Vprocess_alist, for asynchronous subprocesses, which are child
6821 processes visible to Lisp.
6823 - deleted_pid_list, for child processes invisible to Lisp,
6824 typically because of delete-process. These are recorded so that
6825 the processes can be reaped when they exit, so that the operating
6826 system's process table is not cluttered by zombies.
6828 - the local variable PID in Fcall_process, call_process_cleanup and
6829 call_process_kill, for synchronous subprocesses.
6830 record_unwind_protect is used to make sure this process is not
6831 forgotten: if the user interrupts call-process and the child
6832 process refuses to exit immediately even with two C-g's,
6833 call_process_kill adds PID's contents to deleted_pid_list before
6836 The main Emacs thread invokes waitpid only on child processes that
6837 it creates and that have not been reaped. This avoid races on
6838 platforms such as GTK, where other threads create their own
6839 subprocesses which the main thread should not reap. For example,
6840 if the main thread attempted to reap an already-reaped child, it
6841 might inadvertently reap a GTK-created process that happened to
6842 have the same process ID. */
6844 /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing
6845 its own SIGCHLD handling. On POSIXish systems, glib needs this to
6846 keep track of its own children. GNUstep is similar. */
6848 static void dummy_handler (int sig
) {}
6849 static signal_handler_t
volatile lib_child_handler
;
6851 /* Handle a SIGCHLD signal by looking for known child processes of
6852 Emacs whose status have changed. For each one found, record its
6855 All we do is change the status; we do not run sentinels or print
6856 notifications. That is saved for the next time keyboard input is
6857 done, in order to avoid timing errors.
6859 ** WARNING: this can be called during garbage collection.
6860 Therefore, it must not be fooled by the presence of mark bits in
6863 ** USG WARNING: Although it is not obvious from the documentation
6864 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6865 signal() before executing at least one wait(), otherwise the
6866 handler will be called again, resulting in an infinite loop. The
6867 relevant portion of the documentation reads "SIGCLD signals will be
6868 queued and the signal-catching function will be continually
6869 reentered until the queue is empty". Invoking signal() causes the
6870 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6873 ** Malloc WARNING: This should never call malloc either directly or
6874 indirectly; if it does, that is a bug. */
6877 handle_child_signal (int sig
)
6879 Lisp_Object tail
, proc
;
6881 /* Find the process that signaled us, and record its status. */
6883 /* The process can have been deleted by Fdelete_process, or have
6884 been started asynchronously by Fcall_process. */
6885 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6887 bool all_pids_are_fixnums
6888 = (MOST_NEGATIVE_FIXNUM
<= TYPE_MINIMUM (pid_t
)
6889 && TYPE_MAXIMUM (pid_t
) <= MOST_POSITIVE_FIXNUM
);
6890 Lisp_Object head
= XCAR (tail
);
6895 if (all_pids_are_fixnums
? INTEGERP (xpid
) : NUMBERP (xpid
))
6898 if (INTEGERP (xpid
))
6899 deleted_pid
= XINT (xpid
);
6901 deleted_pid
= XFLOAT_DATA (xpid
);
6902 if (child_status_changed (deleted_pid
, 0, 0))
6904 if (STRINGP (XCDR (head
)))
6905 unlink (SSDATA (XCDR (head
)));
6906 XSETCAR (tail
, Qnil
);
6911 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6912 FOR_EACH_PROCESS (tail
, proc
)
6914 struct Lisp_Process
*p
= XPROCESS (proc
);
6918 && child_status_changed (p
->pid
, &status
, WUNTRACED
| WCONTINUED
))
6920 /* Change the status of the process that was found. */
6921 p
->tick
= ++process_tick
;
6922 p
->raw_status
= status
;
6923 p
->raw_status_new
= 1;
6925 /* If process has terminated, stop waiting for its output. */
6926 if (WIFSIGNALED (status
) || WIFEXITED (status
))
6928 bool clear_desc_flag
= 0;
6931 clear_desc_flag
= 1;
6933 /* clear_desc_flag avoids a compiler bug in Microsoft C. */
6934 if (clear_desc_flag
)
6936 FD_CLR (p
->infd
, &input_wait_mask
);
6937 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6943 lib_child_handler (sig
);
6944 #ifdef NS_IMPL_GNUSTEP
6945 /* NSTask in GNUstep sets its child handler each time it is called.
6946 So we must re-set ours. */
6947 catch_child_signal ();
6952 deliver_child_signal (int sig
)
6954 deliver_process_signal (sig
, handle_child_signal
);
6959 exec_sentinel_error_handler (Lisp_Object error_val
)
6961 cmd_error_internal (error_val
, "error in process sentinel: ");
6963 update_echo_area ();
6964 Fsleep_for (make_number (2), Qnil
);
6969 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6971 Lisp_Object sentinel
, odeactivate
;
6972 struct Lisp_Process
*p
= XPROCESS (proc
);
6973 ptrdiff_t count
= SPECPDL_INDEX ();
6974 bool outer_running_asynch_code
= running_asynch_code
;
6975 int waiting
= waiting_for_user_input_p
;
6977 if (inhibit_sentinels
)
6980 odeactivate
= Vdeactivate_mark
;
6982 Lisp_Object obuffer
, okeymap
;
6983 XSETBUFFER (obuffer
, current_buffer
);
6984 okeymap
= BVAR (current_buffer
, keymap
);
6987 /* There's no good reason to let sentinels change the current
6988 buffer, and many callers of accept-process-output, sit-for, and
6989 friends don't expect current-buffer to be changed from under them. */
6990 record_unwind_current_buffer ();
6992 sentinel
= p
->sentinel
;
6994 /* Inhibit quit so that random quits don't screw up a running filter. */
6995 specbind (Qinhibit_quit
, Qt
);
6996 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6998 /* In case we get recursively called,
6999 and we already saved the match data nonrecursively,
7000 save the same match data in safely recursive fashion. */
7001 if (outer_running_asynch_code
)
7004 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
7005 restore_search_regs ();
7006 record_unwind_save_match_data ();
7007 Fset_match_data (tem
, Qt
);
7010 /* For speed, if a search happens within this code,
7011 save the match data in a special nonrecursive fashion. */
7012 running_asynch_code
= 1;
7014 internal_condition_case_1 (read_process_output_call
,
7015 list3 (sentinel
, proc
, reason
),
7016 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
7017 exec_sentinel_error_handler
);
7019 /* If we saved the match data nonrecursively, restore it now. */
7020 restore_search_regs ();
7021 running_asynch_code
= outer_running_asynch_code
;
7023 Vdeactivate_mark
= odeactivate
;
7025 /* Restore waiting_for_user_input_p as it was
7026 when we were called, in case the filter clobbered it. */
7027 waiting_for_user_input_p
= waiting
;
7030 if (! EQ (Fcurrent_buffer (), obuffer
)
7031 || ! EQ (current_buffer
->keymap
, okeymap
))
7033 /* But do it only if the caller is actually going to read events.
7034 Otherwise there's no need to make him wake up, and it could
7035 cause trouble (for example it would make sit_for return). */
7036 if (waiting_for_user_input_p
== -1)
7037 record_asynch_buffer_change ();
7039 unbind_to (count
, Qnil
);
7042 /* Report all recent events of a change in process status
7043 (either run the sentinel or output a message).
7044 This is usually done while Emacs is waiting for keyboard input
7045 but can be done at other times.
7047 Return positive if any input was received from WAIT_PROC (or from
7048 any process if WAIT_PROC is null), zero if input was attempted but
7049 none received, and negative if we didn't even try. */
7052 status_notify (struct Lisp_Process
*deleting_process
,
7053 struct Lisp_Process
*wait_proc
)
7056 Lisp_Object tail
, msg
;
7057 int got_some_output
= -1;
7062 /* Set this now, so that if new processes are created by sentinels
7063 that we run, we get called again to handle their status changes. */
7064 update_tick
= process_tick
;
7066 FOR_EACH_PROCESS (tail
, proc
)
7069 register struct Lisp_Process
*p
= XPROCESS (proc
);
7071 if (p
->tick
!= p
->update_tick
)
7073 p
->update_tick
= p
->tick
;
7075 /* If process is still active, read any output that remains. */
7076 while (! EQ (p
->filter
, Qt
)
7077 && ! EQ (p
->status
, Qconnect
)
7078 && ! EQ (p
->status
, Qlisten
)
7079 /* Network or serial process not stopped: */
7080 && ! EQ (p
->command
, Qt
)
7082 && p
!= deleting_process
)
7084 int nread
= read_process_output (proc
, p
->infd
);
7085 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
))
7086 && got_some_output
< nread
)
7087 got_some_output
= nread
;
7092 /* Get the text to use for the message. */
7093 if (p
->raw_status_new
)
7095 msg
= status_message (p
);
7097 /* If process is terminated, deactivate it or delete it. */
7099 if (CONSP (p
->status
))
7100 symbol
= XCAR (p
->status
);
7102 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
7103 || EQ (symbol
, Qclosed
))
7105 if (delete_exited_processes
)
7106 remove_process (proc
);
7108 deactivate_process (proc
);
7111 /* The actions above may have further incremented p->tick.
7112 So set p->update_tick again so that an error in the sentinel will
7113 not cause this code to be run again. */
7114 p
->update_tick
= p
->tick
;
7115 /* Now output the message suitably. */
7116 exec_sentinel (proc
, msg
);
7117 if (BUFFERP (p
->buffer
))
7118 /* In case it uses %s in mode-line-format. */
7119 bset_update_mode_line (XBUFFER (p
->buffer
));
7123 return got_some_output
;
7126 DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel
,
7127 Sinternal_default_process_sentinel
, 2, 2, 0,
7128 doc
: /* Function used as default sentinel for processes.
7129 This inserts a status message into the process's buffer, if there is one. */)
7130 (Lisp_Object proc
, Lisp_Object msg
)
7132 Lisp_Object buffer
, symbol
;
7133 struct Lisp_Process
*p
;
7134 CHECK_PROCESS (proc
);
7135 p
= XPROCESS (proc
);
7139 symbol
= XCAR (symbol
);
7141 if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
7144 struct buffer
*old
= current_buffer
;
7145 ptrdiff_t opoint
, opoint_byte
;
7146 ptrdiff_t before
, before_byte
;
7148 /* Avoid error if buffer is deleted
7149 (probably that's why the process is dead, too). */
7150 if (!BUFFER_LIVE_P (XBUFFER (buffer
)))
7152 Fset_buffer (buffer
);
7154 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
7155 msg
= (code_convert_string_norecord
7156 (msg
, Vlocale_coding_system
, 1));
7159 opoint_byte
= PT_BYTE
;
7160 /* Insert new output into buffer
7161 at the current end-of-output marker,
7162 thus preserving logical ordering of input and output. */
7163 if (XMARKER (p
->mark
)->buffer
)
7164 Fgoto_char (p
->mark
);
7166 SET_PT_BOTH (ZV
, ZV_BYTE
);
7169 before_byte
= PT_BYTE
;
7171 tem
= BVAR (current_buffer
, read_only
);
7172 bset_read_only (current_buffer
, Qnil
);
7173 insert_string ("\nProcess ");
7174 { /* FIXME: temporary kludge. */
7175 Lisp_Object tem2
= p
->name
; Finsert (1, &tem2
); }
7176 insert_string (" ");
7178 bset_read_only (current_buffer
, tem
);
7179 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
7181 if (opoint
>= before
)
7182 SET_PT_BOTH (opoint
+ (PT
- before
),
7183 opoint_byte
+ (PT_BYTE
- before_byte
));
7185 SET_PT_BOTH (opoint
, opoint_byte
);
7187 set_buffer_internal (old
);
7193 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
7194 Sset_process_coding_system
, 1, 3, 0,
7195 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
7196 DECODING will be used to decode subprocess output and ENCODING to
7197 encode subprocess input. */)
7198 (Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
7200 CHECK_PROCESS (process
);
7202 struct Lisp_Process
*p
= XPROCESS (process
);
7204 Fcheck_coding_system (decoding
);
7205 Fcheck_coding_system (encoding
);
7206 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7207 pset_decode_coding_system (p
, decoding
);
7208 pset_encode_coding_system (p
, encoding
);
7210 /* If the sockets haven't been set up yet, the final setup part of
7211 this will be called asynchronously. */
7212 if (p
->infd
< 0 || p
->outfd
< 0)
7215 setup_process_coding_systems (process
);
7220 DEFUN ("process-coding-system",
7221 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7222 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7223 (register Lisp_Object process
)
7225 CHECK_PROCESS (process
);
7226 return Fcons (XPROCESS (process
)->decode_coding_system
,
7227 XPROCESS (process
)->encode_coding_system
);
7230 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7231 Sset_process_filter_multibyte
, 2, 2, 0,
7232 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7233 If FLAG is non-nil, the filter is given multibyte strings.
7234 If FLAG is nil, the filter is given unibyte strings. In this case,
7235 all character code conversion except for end-of-line conversion is
7237 (Lisp_Object process
, Lisp_Object flag
)
7239 CHECK_PROCESS (process
);
7241 struct Lisp_Process
*p
= XPROCESS (process
);
7243 pset_decode_coding_system
7244 (p
, raw_text_coding_system (p
->decode_coding_system
));
7246 /* If the sockets haven't been set up yet, the final setup part of
7247 this will be called asynchronously. */
7248 if (p
->infd
< 0 || p
->outfd
< 0)
7251 setup_process_coding_systems (process
);
7256 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7257 Sprocess_filter_multibyte_p
, 1, 1, 0,
7258 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7259 (Lisp_Object process
)
7261 CHECK_PROCESS (process
);
7262 struct Lisp_Process
*p
= XPROCESS (process
);
7265 struct coding_system
*coding
= proc_decode_coding_system
[p
->infd
];
7266 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7275 add_gpm_wait_descriptor (int desc
)
7277 add_keyboard_wait_descriptor (desc
);
7281 delete_gpm_wait_descriptor (int desc
)
7283 delete_keyboard_wait_descriptor (desc
);
7288 # ifdef USABLE_SIGIO
7290 /* Return true if *MASK has a bit set
7291 that corresponds to one of the keyboard input descriptors. */
7294 keyboard_bit_set (fd_set
*mask
)
7298 for (fd
= 0; fd
<= max_input_desc
; fd
++)
7299 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7300 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7307 #else /* not subprocesses */
7309 /* Defined in msdos.c. */
7310 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
7311 struct timespec
*, void *);
7313 /* Implementation of wait_reading_process_output, assuming that there
7314 are no subprocesses. Used only by the MS-DOS build.
7316 Wait for timeout to elapse and/or keyboard input to be available.
7320 If negative, gobble data immediately available but don't wait for any.
7323 an additional duration to wait, measured in nanoseconds
7324 If TIME_LIMIT is zero, then:
7325 If NSECS == 0, there is no limit.
7326 If NSECS > 0, the timeout consists of NSECS only.
7327 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
7330 0 to ignore keyboard input, or
7331 1 to return when input is available, or
7332 -1 means caller will actually read the input, so don't throw to
7335 see full version for other parameters. We know that wait_proc will
7336 always be NULL, since `subprocesses' isn't defined.
7338 DO_DISPLAY means redisplay should be done to show subprocess
7339 output that arrives.
7341 Return -1 signifying we got no output and did not try. */
7344 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
7346 Lisp_Object wait_for_cell
,
7347 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
7350 struct timespec end_time
, timeout
;
7351 enum { MINIMUM
= -1, TIMEOUT
, INFINITY
} wait
;
7353 if (TYPE_MAXIMUM (time_t) < time_limit
)
7354 time_limit
= TYPE_MAXIMUM (time_t);
7356 if (time_limit
< 0 || nsecs
< 0)
7358 else if (time_limit
> 0 || nsecs
> 0)
7361 end_time
= timespec_add (current_timespec (),
7362 make_timespec (time_limit
, nsecs
));
7367 /* Turn off periodic alarms (in case they are in use)
7368 and then turn off any other atimers,
7369 because the select emulator uses alarms. */
7371 turn_on_atimers (0);
7375 bool timeout_reduced_for_timers
= false;
7376 fd_set waitchannels
;
7379 /* If calling from keyboard input, do not quit
7380 since we want to return C-g as an input character.
7381 Otherwise, do pending quit if requested. */
7385 /* Exit now if the cell we're waiting for became non-nil. */
7386 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7389 /* Compute time from now till when time limit is up. */
7390 /* Exit if already run out. */
7391 if (wait
== TIMEOUT
)
7393 struct timespec now
= current_timespec ();
7394 if (timespec_cmp (end_time
, now
) <= 0)
7396 timeout
= timespec_sub (end_time
, now
);
7399 timeout
= make_timespec (wait
< TIMEOUT
? 0 : 100000, 0);
7401 /* If our caller will not immediately handle keyboard events,
7402 run timer events directly.
7403 (Callers that will immediately read keyboard events
7404 call timer_delay on their own.) */
7405 if (NILP (wait_for_cell
))
7407 struct timespec timer_delay
;
7411 unsigned old_timers_run
= timers_run
;
7412 timer_delay
= timer_check ();
7413 if (timers_run
!= old_timers_run
&& do_display
)
7414 /* We must retry, since a timer may have requeued itself
7415 and that could alter the time delay. */
7416 redisplay_preserve_echo_area (14);
7420 while (!detect_input_pending ());
7422 /* If there is unread keyboard input, also return. */
7424 && requeued_events_pending_p ())
7427 if (timespec_valid_p (timer_delay
))
7429 if (timespec_cmp (timer_delay
, timeout
) < 0)
7431 timeout
= timer_delay
;
7432 timeout_reduced_for_timers
= true;
7437 /* Cause C-g and alarm signals to take immediate action,
7438 and cause input available signals to zero out timeout. */
7440 set_waiting_for_input (&timeout
);
7442 /* If a frame has been newly mapped and needs updating,
7443 reprocess its display stuff. */
7444 if (frame_garbaged
&& do_display
)
7446 clear_waiting_for_input ();
7447 redisplay_preserve_echo_area (15);
7449 set_waiting_for_input (&timeout
);
7452 /* Wait till there is something to do. */
7453 FD_ZERO (&waitchannels
);
7454 if (read_kbd
&& detect_input_pending ())
7458 if (read_kbd
|| !NILP (wait_for_cell
))
7459 FD_SET (0, &waitchannels
);
7460 nfds
= pselect (1, &waitchannels
, NULL
, NULL
, &timeout
, NULL
);
7465 /* Make C-g and alarm signals set flags again. */
7466 clear_waiting_for_input ();
7468 /* If we woke up due to SIGWINCH, actually change size now. */
7469 do_pending_window_change (0);
7471 if (wait
< INFINITY
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7472 /* We waited the full specified time, so return now. */
7477 /* If the system call was interrupted, then go around the
7479 if (xerrno
== EINTR
)
7480 FD_ZERO (&waitchannels
);
7482 report_file_errno ("Failed select", Qnil
, xerrno
);
7485 /* Check for keyboard input. */
7488 && detect_input_pending_run_timers (do_display
))
7490 swallow_events (do_display
);
7491 if (detect_input_pending_run_timers (do_display
))
7495 /* If there is unread keyboard input, also return. */
7497 && requeued_events_pending_p ())
7500 /* If wait_for_cell. check for keyboard input
7501 but don't run any timers.
7502 ??? (It seems wrong to me to check for keyboard
7503 input at all when wait_for_cell, but the code
7504 has been this way since July 1994.
7505 Try changing this after version 19.31.) */
7506 if (! NILP (wait_for_cell
)
7507 && detect_input_pending ())
7509 swallow_events (do_display
);
7510 if (detect_input_pending ())
7514 /* Exit now if the cell we're waiting for became non-nil. */
7515 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7524 #endif /* not subprocesses */
7526 /* The following functions are needed even if async subprocesses are
7527 not supported. Some of them are no-op stubs in that case. */
7531 /* Add FD, which is a descriptor returned by timerfd_create,
7532 to the set of non-keyboard input descriptors. */
7535 add_timer_wait_descriptor (int fd
)
7537 FD_SET (fd
, &input_wait_mask
);
7538 FD_SET (fd
, &non_keyboard_wait_mask
);
7539 FD_SET (fd
, &non_process_wait_mask
);
7540 fd_callback_info
[fd
].func
= timerfd_callback
;
7541 fd_callback_info
[fd
].data
= NULL
;
7542 fd_callback_info
[fd
].condition
|= FOR_READ
;
7543 if (fd
> max_input_desc
)
7544 max_input_desc
= fd
;
7547 #endif /* HAVE_TIMERFD */
7549 /* Add DESC to the set of keyboard input descriptors. */
7552 add_keyboard_wait_descriptor (int desc
)
7554 #ifdef subprocesses /* Actually means "not MSDOS". */
7555 FD_SET (desc
, &input_wait_mask
);
7556 FD_SET (desc
, &non_process_wait_mask
);
7557 if (desc
> max_input_desc
)
7558 max_input_desc
= desc
;
7562 /* From now on, do not expect DESC to give keyboard input. */
7565 delete_keyboard_wait_descriptor (int desc
)
7568 FD_CLR (desc
, &input_wait_mask
);
7569 FD_CLR (desc
, &non_process_wait_mask
);
7570 delete_input_desc (desc
);
7574 /* Setup coding systems of PROCESS. */
7577 setup_process_coding_systems (Lisp_Object process
)
7580 struct Lisp_Process
*p
= XPROCESS (process
);
7582 int outch
= p
->outfd
;
7583 Lisp_Object coding_system
;
7585 if (inch
< 0 || outch
< 0)
7588 if (!proc_decode_coding_system
[inch
])
7589 proc_decode_coding_system
[inch
] = xmalloc (sizeof (struct coding_system
));
7590 coding_system
= p
->decode_coding_system
;
7591 if (EQ (p
->filter
, Qinternal_default_process_filter
)
7592 && BUFFERP (p
->buffer
))
7594 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
7595 coding_system
= raw_text_coding_system (coding_system
);
7597 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
7599 if (!proc_encode_coding_system
[outch
])
7600 proc_encode_coding_system
[outch
] = xmalloc (sizeof (struct coding_system
));
7601 setup_coding_system (p
->encode_coding_system
,
7602 proc_encode_coding_system
[outch
]);
7606 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7607 doc
: /* Return the (or a) live process associated with BUFFER.
7608 BUFFER may be a buffer or the name of one.
7609 Return nil if all processes associated with BUFFER have been
7610 deleted or killed. */)
7611 (register Lisp_Object buffer
)
7614 register Lisp_Object buf
, tail
, proc
;
7616 if (NILP (buffer
)) return Qnil
;
7617 buf
= Fget_buffer (buffer
);
7618 if (NILP (buf
)) return Qnil
;
7620 FOR_EACH_PROCESS (tail
, proc
)
7621 if (EQ (XPROCESS (proc
)->buffer
, buf
))
7623 #endif /* subprocesses */
7627 DEFUN ("process-inherit-coding-system-flag",
7628 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7630 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7631 If this flag is t, `buffer-file-coding-system' of the buffer
7632 associated with PROCESS will inherit the coding system used to decode
7633 the process output. */)
7634 (register Lisp_Object process
)
7637 CHECK_PROCESS (process
);
7638 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7640 /* Ignore the argument and return the value of
7641 inherit-process-coding-system. */
7642 return inherit_process_coding_system
? Qt
: Qnil
;
7646 /* Kill all processes associated with `buffer'.
7647 If `buffer' is nil, kill all processes. */
7650 kill_buffer_processes (Lisp_Object buffer
)
7653 Lisp_Object tail
, proc
;
7655 FOR_EACH_PROCESS (tail
, proc
)
7656 if (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
))
7658 if (NETCONN_P (proc
) || SERIALCONN_P (proc
) || PIPECONN_P (proc
))
7659 Fdelete_process (proc
);
7660 else if (XPROCESS (proc
)->infd
>= 0)
7661 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7663 #else /* subprocesses */
7664 /* Since we have no subprocesses, this does nothing. */
7665 #endif /* subprocesses */
7668 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7669 Swaiting_for_user_input_p
, 0, 0, 0,
7670 doc
: /* Return non-nil if Emacs is waiting for input from the user.
7671 This is intended for use by asynchronous process output filters and sentinels. */)
7675 return (waiting_for_user_input_p
? Qt
: Qnil
);
7681 /* Stop reading input from keyboard sources. */
7684 hold_keyboard_input (void)
7689 /* Resume reading input from keyboard sources. */
7692 unhold_keyboard_input (void)
7697 /* Return true if keyboard input is on hold, zero otherwise. */
7700 kbd_on_hold_p (void)
7702 return kbd_is_on_hold
;
7706 /* Enumeration of and access to system processes a-la ps(1). */
7708 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7710 doc
: /* Return a list of numerical process IDs of all running processes.
7711 If this functionality is unsupported, return nil.
7713 See `process-attributes' for getting attributes of a process given its ID. */)
7716 return list_system_processes ();
7719 DEFUN ("process-attributes", Fprocess_attributes
,
7720 Sprocess_attributes
, 1, 1, 0,
7721 doc
: /* Return attributes of the process given by its PID, a number.
7723 Value is an alist where each element is a cons cell of the form
7727 If this functionality is unsupported, the value is nil.
7729 See `list-system-processes' for getting a list of all process IDs.
7731 The KEYs of the attributes that this function may return are listed
7732 below, together with the type of the associated VALUE (in parentheses).
7733 Not all platforms support all of these attributes; unsupported
7734 attributes will not appear in the returned alist.
7735 Unless explicitly indicated otherwise, numbers can have either
7736 integer or floating point values.
7738 euid -- Effective user User ID of the process (number)
7739 user -- User name corresponding to euid (string)
7740 egid -- Effective user Group ID of the process (number)
7741 group -- Group name corresponding to egid (string)
7742 comm -- Command name (executable name only) (string)
7743 state -- Process state code, such as "S", "R", or "T" (string)
7744 ppid -- Parent process ID (number)
7745 pgrp -- Process group ID (number)
7746 sess -- Session ID, i.e. process ID of session leader (number)
7747 ttname -- Controlling tty name (string)
7748 tpgid -- ID of foreground process group on the process's tty (number)
7749 minflt -- number of minor page faults (number)
7750 majflt -- number of major page faults (number)
7751 cminflt -- cumulative number of minor page faults (number)
7752 cmajflt -- cumulative number of major page faults (number)
7753 utime -- user time used by the process, in (current-time) format,
7754 which is a list of integers (HIGH LOW USEC PSEC)
7755 stime -- system time used by the process (current-time)
7756 time -- sum of utime and stime (current-time)
7757 cutime -- user time used by the process and its children (current-time)
7758 cstime -- system time used by the process and its children (current-time)
7759 ctime -- sum of cutime and cstime (current-time)
7760 pri -- priority of the process (number)
7761 nice -- nice value of the process (number)
7762 thcount -- process thread count (number)
7763 start -- time the process started (current-time)
7764 vsize -- virtual memory size of the process in KB's (number)
7765 rss -- resident set size of the process in KB's (number)
7766 etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format
7767 pcpu -- percents of CPU time used by the process (floating-point number)
7768 pmem -- percents of total physical memory used by process's resident set
7769 (floating-point number)
7770 args -- command line which invoked the process (string). */)
7773 return system_process_attributes (pid
);
7777 /* Arrange to catch SIGCHLD if this hasn't already been arranged.
7778 Invoke this after init_process_emacs, and after glib and/or GNUstep
7779 futz with the SIGCHLD handler, but before Emacs forks any children.
7780 This function's caller should block SIGCHLD. */
7783 catch_child_signal (void)
7785 struct sigaction action
, old_action
;
7787 emacs_sigaction_init (&action
, deliver_child_signal
);
7788 block_child_signal (&oldset
);
7789 sigaction (SIGCHLD
, &action
, &old_action
);
7790 eassert (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7791 || ! (old_action
.sa_flags
& SA_SIGINFO
));
7793 if (old_action
.sa_handler
!= deliver_child_signal
)
7795 = (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7797 : old_action
.sa_handler
);
7798 unblock_child_signal (&oldset
);
7800 #endif /* subprocesses */
7803 /* This is not called "init_process" because that is the name of a
7804 Mach system call, so it would cause problems on Darwin systems. */
7806 init_process_emacs (void)
7811 inhibit_sentinels
= 0;
7814 if (! noninteractive
|| initialized
)
7817 #if defined HAVE_GLIB && !defined WINDOWSNT
7818 /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
7819 this should always fail, but is enough to initialize glib's
7820 private SIGCHLD handler, allowing catch_child_signal to copy
7821 it into lib_child_handler. */
7822 g_source_unref (g_child_watch_source_new (getpid ()));
7824 catch_child_signal ();
7827 FD_ZERO (&input_wait_mask
);
7828 FD_ZERO (&non_keyboard_wait_mask
);
7829 FD_ZERO (&non_process_wait_mask
);
7830 FD_ZERO (&write_mask
);
7831 max_process_desc
= max_input_desc
= -1;
7832 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7834 #ifdef NON_BLOCKING_CONNECT
7835 FD_ZERO (&connect_wait_mask
);
7836 num_pending_connects
= 0;
7839 process_output_delay_count
= 0;
7840 process_output_skip
= 0;
7842 /* Don't do this, it caused infinite select loops. The display
7843 method should call add_keyboard_wait_descriptor on stdin if it
7846 FD_SET (0, &input_wait_mask
);
7849 Vprocess_alist
= Qnil
;
7850 deleted_pid_list
= Qnil
;
7851 for (i
= 0; i
< FD_SETSIZE
; i
++)
7853 chan_process
[i
] = Qnil
;
7854 proc_buffered_char
[i
] = -1;
7856 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7857 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7858 #ifdef DATAGRAM_SOCKETS
7859 memset (datagram_address
, 0, sizeof datagram_address
);
7862 #if defined (DARWIN_OS)
7863 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7864 processes. As such, we only change the default value. */
7867 char const *release
= (STRINGP (Voperating_system_release
)
7868 ? SSDATA (Voperating_system_release
)
7870 if (!release
|| !release
[0] || (release
[0] < '7' && release
[1] == '.')) {
7871 Vprocess_connection_type
= Qnil
;
7875 #endif /* subprocesses */
7880 syms_of_process (void)
7884 DEFSYM (Qprocessp
, "processp");
7885 DEFSYM (Qrun
, "run");
7886 DEFSYM (Qstop
, "stop");
7887 DEFSYM (Qsignal
, "signal");
7889 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7892 DEFSYM (Qopen
, "open");
7893 DEFSYM (Qclosed
, "closed");
7894 DEFSYM (Qconnect
, "connect");
7895 DEFSYM (Qfailed
, "failed");
7896 DEFSYM (Qlisten
, "listen");
7897 DEFSYM (Qlocal
, "local");
7898 DEFSYM (Qipv4
, "ipv4");
7900 DEFSYM (Qipv6
, "ipv6");
7902 DEFSYM (Qdatagram
, "datagram");
7903 DEFSYM (Qseqpacket
, "seqpacket");
7905 DEFSYM (QCport
, ":port");
7906 DEFSYM (QCspeed
, ":speed");
7907 DEFSYM (QCprocess
, ":process");
7909 DEFSYM (QCbytesize
, ":bytesize");
7910 DEFSYM (QCstopbits
, ":stopbits");
7911 DEFSYM (QCparity
, ":parity");
7912 DEFSYM (Qodd
, "odd");
7913 DEFSYM (Qeven
, "even");
7914 DEFSYM (QCflowcontrol
, ":flowcontrol");
7917 DEFSYM (QCsummary
, ":summary");
7919 DEFSYM (Qreal
, "real");
7920 DEFSYM (Qnetwork
, "network");
7921 DEFSYM (Qserial
, "serial");
7922 DEFSYM (Qpipe
, "pipe");
7923 DEFSYM (QCbuffer
, ":buffer");
7924 DEFSYM (QChost
, ":host");
7925 DEFSYM (QCservice
, ":service");
7926 DEFSYM (QClocal
, ":local");
7927 DEFSYM (QCremote
, ":remote");
7928 DEFSYM (QCcoding
, ":coding");
7929 DEFSYM (QCserver
, ":server");
7930 DEFSYM (QCnowait
, ":nowait");
7931 DEFSYM (QCsentinel
, ":sentinel");
7932 DEFSYM (QCtls_parameters
, ":tls-parameters");
7933 DEFSYM (Qnsm_verify_connection
, "nsm-verify-connection");
7934 DEFSYM (QClog
, ":log");
7935 DEFSYM (QCnoquery
, ":noquery");
7936 DEFSYM (QCstop
, ":stop");
7937 DEFSYM (QCplist
, ":plist");
7938 DEFSYM (QCcommand
, ":command");
7939 DEFSYM (QCconnection_type
, ":connection-type");
7940 DEFSYM (QCstderr
, ":stderr");
7941 DEFSYM (Qpty
, "pty");
7942 DEFSYM (Qpipe
, "pipe");
7944 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7946 staticpro (&Vprocess_alist
);
7947 staticpro (&deleted_pid_list
);
7949 #endif /* subprocesses */
7951 DEFSYM (QCname
, ":name");
7952 DEFSYM (QCtype
, ":type");
7954 DEFSYM (Qeuid
, "euid");
7955 DEFSYM (Qegid
, "egid");
7956 DEFSYM (Quser
, "user");
7957 DEFSYM (Qgroup
, "group");
7958 DEFSYM (Qcomm
, "comm");
7959 DEFSYM (Qstate
, "state");
7960 DEFSYM (Qppid
, "ppid");
7961 DEFSYM (Qpgrp
, "pgrp");
7962 DEFSYM (Qsess
, "sess");
7963 DEFSYM (Qttname
, "ttname");
7964 DEFSYM (Qtpgid
, "tpgid");
7965 DEFSYM (Qminflt
, "minflt");
7966 DEFSYM (Qmajflt
, "majflt");
7967 DEFSYM (Qcminflt
, "cminflt");
7968 DEFSYM (Qcmajflt
, "cmajflt");
7969 DEFSYM (Qutime
, "utime");
7970 DEFSYM (Qstime
, "stime");
7971 DEFSYM (Qtime
, "time");
7972 DEFSYM (Qcutime
, "cutime");
7973 DEFSYM (Qcstime
, "cstime");
7974 DEFSYM (Qctime
, "ctime");
7976 DEFSYM (Qinternal_default_process_sentinel
,
7977 "internal-default-process-sentinel");
7978 DEFSYM (Qinternal_default_process_filter
,
7979 "internal-default-process-filter");
7981 DEFSYM (Qpri
, "pri");
7982 DEFSYM (Qnice
, "nice");
7983 DEFSYM (Qthcount
, "thcount");
7984 DEFSYM (Qstart
, "start");
7985 DEFSYM (Qvsize
, "vsize");
7986 DEFSYM (Qrss
, "rss");
7987 DEFSYM (Qetime
, "etime");
7988 DEFSYM (Qpcpu
, "pcpu");
7989 DEFSYM (Qpmem
, "pmem");
7990 DEFSYM (Qargs
, "args");
7992 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7993 doc
: /* Non-nil means delete processes immediately when they exit.
7994 A value of nil means don't delete them until `list-processes' is run. */);
7996 delete_exited_processes
= 1;
7999 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
8000 doc
: /* Control type of device used to communicate with subprocesses.
8001 Values are nil to use a pipe, or t or `pty' to use a pty.
8002 The value has no effect if the system has no ptys or if all ptys are busy:
8003 then a pipe is used in any case.
8004 The value takes effect when `start-process' is called. */);
8005 Vprocess_connection_type
= Qt
;
8007 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
8008 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
8009 On some systems, when Emacs reads the output from a subprocess, the output data
8010 is read in very small blocks, potentially resulting in very poor performance.
8011 This behavior can be remedied to some extent by setting this variable to a
8012 non-nil value, as it will automatically delay reading from such processes, to
8013 allow them to produce more output before Emacs tries to read it.
8014 If the value is t, the delay is reset after each write to the process; any other
8015 non-nil value means that the delay is not reset on write.
8016 The variable takes effect when `start-process' is called. */);
8017 Vprocess_adaptive_read_buffering
= Qt
;
8019 defsubr (&Sprocessp
);
8020 defsubr (&Sget_process
);
8021 defsubr (&Sdelete_process
);
8022 defsubr (&Sprocess_status
);
8023 defsubr (&Sprocess_exit_status
);
8024 defsubr (&Sprocess_id
);
8025 defsubr (&Sprocess_name
);
8026 defsubr (&Sprocess_tty_name
);
8027 defsubr (&Sprocess_command
);
8028 defsubr (&Sset_process_buffer
);
8029 defsubr (&Sprocess_buffer
);
8030 defsubr (&Sprocess_mark
);
8031 defsubr (&Sset_process_filter
);
8032 defsubr (&Sprocess_filter
);
8033 defsubr (&Sset_process_sentinel
);
8034 defsubr (&Sprocess_sentinel
);
8035 defsubr (&Sset_process_window_size
);
8036 defsubr (&Sset_process_inherit_coding_system_flag
);
8037 defsubr (&Sset_process_query_on_exit_flag
);
8038 defsubr (&Sprocess_query_on_exit_flag
);
8039 defsubr (&Sprocess_contact
);
8040 defsubr (&Sprocess_plist
);
8041 defsubr (&Sset_process_plist
);
8042 defsubr (&Sprocess_list
);
8043 defsubr (&Smake_process
);
8044 defsubr (&Smake_pipe_process
);
8045 defsubr (&Sserial_process_configure
);
8046 defsubr (&Smake_serial_process
);
8047 defsubr (&Sset_network_process_option
);
8048 defsubr (&Smake_network_process
);
8049 defsubr (&Sformat_network_address
);
8050 defsubr (&Snetwork_interface_list
);
8051 defsubr (&Snetwork_interface_info
);
8052 #ifdef DATAGRAM_SOCKETS
8053 defsubr (&Sprocess_datagram_address
);
8054 defsubr (&Sset_process_datagram_address
);
8056 defsubr (&Saccept_process_output
);
8057 defsubr (&Sprocess_send_region
);
8058 defsubr (&Sprocess_send_string
);
8059 defsubr (&Sinterrupt_process
);
8060 defsubr (&Skill_process
);
8061 defsubr (&Squit_process
);
8062 defsubr (&Sstop_process
);
8063 defsubr (&Scontinue_process
);
8064 defsubr (&Sprocess_running_child_p
);
8065 defsubr (&Sprocess_send_eof
);
8066 defsubr (&Ssignal_process
);
8067 defsubr (&Swaiting_for_user_input_p
);
8068 defsubr (&Sprocess_type
);
8069 defsubr (&Sinternal_default_process_sentinel
);
8070 defsubr (&Sinternal_default_process_filter
);
8071 defsubr (&Sset_process_coding_system
);
8072 defsubr (&Sprocess_coding_system
);
8073 defsubr (&Sset_process_filter_multibyte
);
8074 defsubr (&Sprocess_filter_multibyte_p
);
8076 #endif /* subprocesses */
8078 defsubr (&Sget_buffer_process
);
8079 defsubr (&Sprocess_inherit_coding_system_flag
);
8080 defsubr (&Slist_system_processes
);
8081 defsubr (&Sprocess_attributes
);
8084 Lisp_Object subfeatures
= Qnil
;
8085 const struct socket_options
*sopt
;
8087 #define ADD_SUBFEATURE(key, val) \
8088 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
8090 #ifdef NON_BLOCKING_CONNECT
8091 ADD_SUBFEATURE (QCnowait
, Qt
);
8093 #ifdef DATAGRAM_SOCKETS
8094 ADD_SUBFEATURE (QCtype
, Qdatagram
);
8096 #ifdef HAVE_SEQPACKET
8097 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
8099 #ifdef HAVE_LOCAL_SOCKETS
8100 ADD_SUBFEATURE (QCfamily
, Qlocal
);
8102 ADD_SUBFEATURE (QCfamily
, Qipv4
);
8104 ADD_SUBFEATURE (QCfamily
, Qipv6
);
8106 #ifdef HAVE_GETSOCKNAME
8107 ADD_SUBFEATURE (QCservice
, Qt
);
8109 ADD_SUBFEATURE (QCserver
, Qt
);
8111 for (sopt
= socket_options
; sopt
->name
; sopt
++)
8112 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
8114 Fprovide (intern_c_string ("make-network-process"), subfeatures
);