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 (at
11 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>
90 #endif /* subprocesses */
96 #include "character.h"
101 #include "termopts.h"
102 #include "keyboard.h"
103 #include "blockinput.h"
105 #include "sysselect.h"
106 #include "syssignal.h"
112 #ifdef HAVE_WINDOW_SYSTEM
114 #endif /* HAVE_WINDOW_SYSTEM */
117 #include "xgselect.h"
123 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
124 /* This is 0.1s in nanoseconds. */
125 #define ASYNC_RETRY_NSEC 100000000
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 DATAGRAM_SOCKETS if datagrams can be used safely on
197 this system. We need to read full packets, so we need a
198 "non-destructive" select. So we require either native select,
199 or emulation of select using FIONREAD. */
201 #ifndef BROKEN_DATAGRAM_SOCKETS
202 # if defined HAVE_SELECT || defined USABLE_FIONREAD
203 # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE
204 # define DATAGRAM_SOCKETS
209 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
210 # define HAVE_SEQPACKET
213 #define READ_OUTPUT_DELAY_INCREMENT (TIMESPEC_RESOLUTION / 100)
214 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
215 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
217 /* Number of processes which have a non-zero read_output_delay,
218 and therefore might be delayed for adaptive read buffering. */
220 static int process_output_delay_count
;
222 /* True if any process has non-nil read_output_skip. */
224 static bool process_output_skip
;
226 static void create_process (Lisp_Object
, char **, Lisp_Object
);
228 static bool keyboard_bit_set (fd_set
*);
230 static void deactivate_process (Lisp_Object
);
231 static int status_notify (struct Lisp_Process
*, struct Lisp_Process
*);
232 static int read_process_output (Lisp_Object
, int);
233 static void handle_child_signal (int);
234 static void create_pty (Lisp_Object
);
236 static Lisp_Object
get_process (register Lisp_Object name
);
237 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
239 /* Mask of bits indicating the descriptors that we wait for input on. */
241 static fd_set input_wait_mask
;
243 /* Mask that excludes keyboard input descriptor(s). */
245 static fd_set non_keyboard_wait_mask
;
247 /* Mask that excludes process input descriptor(s). */
249 static fd_set non_process_wait_mask
;
251 /* Mask for selecting for write. */
253 static fd_set write_mask
;
255 /* Mask of bits indicating the descriptors that we wait for connect to
256 complete on. Once they complete, they are removed from this mask
257 and added to the input_wait_mask and non_keyboard_wait_mask. */
259 static fd_set connect_wait_mask
;
261 /* Number of bits set in connect_wait_mask. */
262 static int num_pending_connects
;
264 /* The largest descriptor currently in use for a process object; -1 if none. */
265 static int max_process_desc
;
267 /* The largest descriptor currently in use for input; -1 if none. */
268 static int max_input_desc
;
270 /* Set the external socket descriptor for Emacs to use when
271 `make-network-process' is called with a non-nil
272 `:use-external-socket' option. The value should be either -1, or
273 the file descriptor of a socket that is already bound. */
274 static int external_sock_fd
;
276 /* Indexed by descriptor, gives the process (if any) for that descriptor. */
277 static Lisp_Object chan_process
[FD_SETSIZE
];
278 static void wait_for_socket_fds (Lisp_Object
, char const *);
280 /* Alist of elements (NAME . PROCESS). */
281 static Lisp_Object Vprocess_alist
;
283 /* Buffered-ahead input char from process, indexed by channel.
284 -1 means empty (no char is buffered).
285 Used on sys V where the only way to tell if there is any
286 output from the process is to read at least one char.
287 Always -1 on systems that support FIONREAD. */
289 static int proc_buffered_char
[FD_SETSIZE
];
291 /* Table of `struct coding-system' for each process. */
292 static struct coding_system
*proc_decode_coding_system
[FD_SETSIZE
];
293 static struct coding_system
*proc_encode_coding_system
[FD_SETSIZE
];
295 #ifdef DATAGRAM_SOCKETS
296 /* Table of `partner address' for datagram sockets. */
297 static struct sockaddr_and_len
{
300 } datagram_address
[FD_SETSIZE
];
301 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
302 #define DATAGRAM_CONN_P(proc) \
303 (PROCESSP (proc) && \
304 XPROCESS (proc)->infd >= 0 && \
305 datagram_address[XPROCESS (proc)->infd].sa != 0)
307 #define DATAGRAM_CHAN_P(chan) (0)
308 #define DATAGRAM_CONN_P(proc) (0)
311 /* FOR_EACH_PROCESS (LIST_VAR, PROC_VAR) followed by a statement is
312 a `for' loop which iterates over processes from Vprocess_alist. */
314 #define FOR_EACH_PROCESS(list_var, proc_var) \
315 FOR_EACH_ALIST_VALUE (Vprocess_alist, list_var, proc_var)
317 /* These setters are used only in this file, so they can be private. */
319 pset_buffer (struct Lisp_Process
*p
, Lisp_Object val
)
324 pset_command (struct Lisp_Process
*p
, Lisp_Object val
)
329 pset_decode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
331 p
->decode_coding_system
= val
;
334 pset_decoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
336 p
->decoding_buf
= val
;
339 pset_encode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
341 p
->encode_coding_system
= val
;
344 pset_encoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
346 p
->encoding_buf
= val
;
349 pset_filter (struct Lisp_Process
*p
, Lisp_Object val
)
351 p
->filter
= NILP (val
) ? Qinternal_default_process_filter
: val
;
354 pset_log (struct Lisp_Process
*p
, Lisp_Object val
)
359 pset_mark (struct Lisp_Process
*p
, Lisp_Object val
)
364 pset_name (struct Lisp_Process
*p
, Lisp_Object val
)
369 pset_plist (struct Lisp_Process
*p
, Lisp_Object val
)
374 pset_sentinel (struct Lisp_Process
*p
, Lisp_Object val
)
376 p
->sentinel
= NILP (val
) ? Qinternal_default_process_sentinel
: val
;
379 pset_tty_name (struct Lisp_Process
*p
, Lisp_Object val
)
384 pset_type (struct Lisp_Process
*p
, Lisp_Object val
)
389 pset_write_queue (struct Lisp_Process
*p
, Lisp_Object val
)
391 p
->write_queue
= val
;
394 pset_stderrproc (struct Lisp_Process
*p
, Lisp_Object val
)
401 make_lisp_proc (struct Lisp_Process
*p
)
403 return make_lisp_ptr (p
, Lisp_Vectorlike
);
406 static struct fd_callback_data
412 int condition
; /* Mask of the defines above. */
413 } fd_callback_info
[FD_SETSIZE
];
416 /* Add a file descriptor FD to be monitored for when read is possible.
417 When read is possible, call FUNC with argument DATA. */
420 add_read_fd (int fd
, fd_callback func
, void *data
)
422 add_keyboard_wait_descriptor (fd
);
424 fd_callback_info
[fd
].func
= func
;
425 fd_callback_info
[fd
].data
= data
;
426 fd_callback_info
[fd
].condition
|= FOR_READ
;
429 /* Stop monitoring file descriptor FD for when read is possible. */
432 delete_read_fd (int fd
)
434 delete_keyboard_wait_descriptor (fd
);
436 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
437 if (fd_callback_info
[fd
].condition
== 0)
439 fd_callback_info
[fd
].func
= 0;
440 fd_callback_info
[fd
].data
= 0;
444 /* Add a file descriptor FD to be monitored for when write is possible.
445 When write is possible, call FUNC with argument DATA. */
448 add_write_fd (int fd
, fd_callback func
, void *data
)
450 FD_SET (fd
, &write_mask
);
451 if (fd
> max_input_desc
)
454 fd_callback_info
[fd
].func
= func
;
455 fd_callback_info
[fd
].data
= data
;
456 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
459 /* FD is no longer an input descriptor; update max_input_desc accordingly. */
462 delete_input_desc (int fd
)
464 if (fd
== max_input_desc
)
468 while (0 <= fd
&& ! (FD_ISSET (fd
, &input_wait_mask
)
469 || FD_ISSET (fd
, &write_mask
)));
475 /* Stop monitoring file descriptor FD for when write is possible. */
478 delete_write_fd (int fd
)
480 FD_CLR (fd
, &write_mask
);
481 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
482 if (fd_callback_info
[fd
].condition
== 0)
484 fd_callback_info
[fd
].func
= 0;
485 fd_callback_info
[fd
].data
= 0;
486 delete_input_desc (fd
);
491 /* Compute the Lisp form of the process status, p->status, from
492 the numeric status that was returned by `wait'. */
494 static Lisp_Object
status_convert (int);
497 update_status (struct Lisp_Process
*p
)
499 eassert (p
->raw_status_new
);
500 pset_status (p
, status_convert (p
->raw_status
));
501 p
->raw_status_new
= 0;
504 /* Convert a process status word in Unix format to
505 the list that we use internally. */
508 status_convert (int w
)
511 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
512 else if (WIFEXITED (w
))
513 return Fcons (Qexit
, Fcons (make_number (WEXITSTATUS (w
)),
514 WCOREDUMP (w
) ? Qt
: Qnil
));
515 else if (WIFSIGNALED (w
))
516 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
517 WCOREDUMP (w
) ? Qt
: Qnil
));
522 /* Given a status-list, extract the three pieces of information
523 and store them individually through the three pointers. */
526 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, bool *coredump
)
540 *code
= XFASTINT (XCAR (tem
));
542 *coredump
= !NILP (tem
);
546 /* Return a string describing a process status list. */
549 status_message (struct Lisp_Process
*p
)
551 Lisp_Object status
= p
->status
;
557 decode_status (status
, &symbol
, &code
, &coredump
);
559 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
562 synchronize_system_messages_locale ();
563 signame
= strsignal (code
);
565 string
= build_string ("unknown");
570 string
= build_unibyte_string (signame
);
571 if (! NILP (Vlocale_coding_system
))
572 string
= (code_convert_string_norecord
573 (string
, Vlocale_coding_system
, 0));
574 c1
= STRING_CHAR (SDATA (string
));
577 Faset (string
, make_number (0), make_number (c2
));
579 AUTO_STRING (suffix
, coredump
? " (core dumped)\n" : "\n");
580 return concat2 (string
, suffix
);
582 else if (EQ (symbol
, Qexit
))
585 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
587 return build_string ("finished\n");
588 AUTO_STRING (prefix
, "exited abnormally with code ");
589 string
= Fnumber_to_string (make_number (code
));
590 AUTO_STRING (suffix
, coredump
? " (core dumped)\n" : "\n");
591 return concat3 (prefix
, string
, suffix
);
593 else if (EQ (symbol
, Qfailed
))
595 AUTO_STRING (prefix
, "failed with code ");
596 string
= Fnumber_to_string (make_number (code
));
597 AUTO_STRING (suffix
, "\n");
598 return concat3 (prefix
, string
, suffix
);
601 return Fcopy_sequence (Fsymbol_name (symbol
));
604 enum { PTY_NAME_SIZE
= 24 };
606 /* Open an available pty, returning a file descriptor.
607 Store into PTY_NAME the file name of the terminal corresponding to the pty.
608 Return -1 on failure. */
611 allocate_pty (char pty_name
[PTY_NAME_SIZE
])
620 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
621 for (i
= 0; i
< 16; i
++)
624 #ifdef PTY_NAME_SPRINTF
627 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
628 #endif /* no PTY_NAME_SPRINTF */
632 #else /* no PTY_OPEN */
633 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
634 #endif /* no PTY_OPEN */
638 #ifdef PTY_TTY_NAME_SPRINTF
641 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
642 #endif /* no PTY_TTY_NAME_SPRINTF */
644 /* Set FD's close-on-exec flag. This is needed even if
645 PT_OPEN calls posix_openpt with O_CLOEXEC, since POSIX
646 doesn't require support for that combination.
647 Do this after PTY_TTY_NAME_SPRINTF, which on some platforms
648 doesn't work if the close-on-exec flag is set (Bug#20555).
649 Multithreaded platforms where posix_openpt ignores
650 O_CLOEXEC (or where PTY_OPEN doesn't call posix_openpt)
651 have a race condition between the PTY_OPEN and here. */
652 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
654 /* Check to make certain that both sides are available.
655 This avoids a nasty yet stupid bug in rlogins. */
656 if (faccessat (AT_FDCWD
, pty_name
, R_OK
| W_OK
, AT_EACCESS
) != 0)
669 #endif /* HAVE_PTYS */
673 /* Allocate basically initialized process. */
675 static struct Lisp_Process
*
676 allocate_process (void)
678 return ALLOCATE_ZEROED_PSEUDOVECTOR (struct Lisp_Process
, pid
, PVEC_PROCESS
);
682 make_process (Lisp_Object name
)
684 struct Lisp_Process
*p
= allocate_process ();
685 /* Initialize Lisp data. Note that allocate_process initializes all
686 Lisp data to nil, so do it only for slots which should not be nil. */
687 pset_status (p
, Qrun
);
688 pset_mark (p
, Fmake_marker ());
690 /* Initialize non-Lisp data. Note that allocate_process zeroes out all
691 non-Lisp data, so do it only for slots which should not be zero. */
694 for (int i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
698 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
699 p
->gnutls_boot_parameters
= Qnil
;
702 /* If name is already in use, modify it until it is unused. */
704 Lisp_Object name1
= name
;
705 for (printmax_t i
= 1; ; i
++)
707 Lisp_Object tem
= Fget_process (name1
);
710 char const suffix_fmt
[] = "<%"pMd
">";
711 char suffix
[sizeof suffix_fmt
+ INT_STRLEN_BOUND (printmax_t
)];
712 AUTO_STRING_WITH_LEN (lsuffix
, suffix
, sprintf (suffix
, suffix_fmt
, i
));
713 name1
= concat2 (name
, lsuffix
);
717 pset_sentinel (p
, Qinternal_default_process_sentinel
);
718 pset_filter (p
, Qinternal_default_process_filter
);
720 XSETPROCESS (val
, p
);
721 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
726 remove_process (register Lisp_Object proc
)
728 register Lisp_Object pair
;
730 pair
= Frassq (proc
, Vprocess_alist
);
731 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
733 deactivate_process (proc
);
736 #ifdef HAVE_GETADDRINFO_A
738 free_dns_request (Lisp_Object proc
)
740 struct Lisp_Process
*p
= XPROCESS (proc
);
742 if (p
->dns_request
->ar_result
)
743 freeaddrinfo (p
->dns_request
->ar_result
);
744 xfree (p
->dns_request
);
745 p
->dns_request
= NULL
;
750 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
751 doc
: /* Return t if OBJECT is a process. */)
754 return PROCESSP (object
) ? Qt
: Qnil
;
757 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
758 doc
: /* Return the process named NAME, or nil if there is none. */)
759 (register Lisp_Object name
)
764 return Fcdr (Fassoc (name
, Vprocess_alist
));
767 /* This is how commands for the user decode process arguments. It
768 accepts a process, a process name, a buffer, a buffer name, or nil.
769 Buffers denote the first process in the buffer, and nil denotes the
773 get_process (register Lisp_Object name
)
775 register Lisp_Object proc
, obj
;
778 obj
= Fget_process (name
);
780 obj
= Fget_buffer (name
);
782 error ("Process %s does not exist", SDATA (name
));
784 else if (NILP (name
))
785 obj
= Fcurrent_buffer ();
789 /* Now obj should be either a buffer object or a process object. */
792 if (NILP (BVAR (XBUFFER (obj
), name
)))
793 error ("Attempt to get process for a dead buffer");
794 proc
= Fget_buffer_process (obj
);
796 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
807 /* Fdelete_process promises to immediately forget about the process, but in
808 reality, Emacs needs to remember those processes until they have been
809 treated by the SIGCHLD handler and waitpid has been invoked on them;
810 otherwise they might fill up the kernel's process table.
812 Some processes created by call-process are also put onto this list.
814 Members of this list are (process-ID . filename) pairs. The
815 process-ID is a number; the filename, if a string, is a file that
816 needs to be removed after the process exits. */
817 static Lisp_Object deleted_pid_list
;
820 record_deleted_pid (pid_t pid
, Lisp_Object filename
)
822 deleted_pid_list
= Fcons (Fcons (make_fixnum_or_float (pid
), filename
),
823 /* GC treated elements set to nil. */
824 Fdelq (Qnil
, deleted_pid_list
));
828 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
829 doc
: /* Delete PROCESS: kill it and forget about it immediately.
830 PROCESS may be a process, a buffer, the name of a process or buffer, or
831 nil, indicating the current buffer's process. */)
832 (register Lisp_Object process
)
834 register struct Lisp_Process
*p
;
836 process
= get_process (process
);
837 p
= XPROCESS (process
);
839 #ifdef HAVE_GETADDRINFO_A
842 /* Cancel the request. Unless shutting down, wait until
843 completion. Free the request if completely canceled. */
845 bool canceled
= gai_cancel (p
->dns_request
) != EAI_NOTCANCELED
;
846 if (!canceled
&& !inhibit_sentinels
)
848 struct gaicb
const *req
= p
->dns_request
;
849 while (gai_suspend (&req
, 1, NULL
) != 0)
854 free_dns_request (process
);
858 p
->raw_status_new
= 0;
859 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
861 pset_status (p
, list2 (Qexit
, make_number (0)));
862 p
->tick
= ++process_tick
;
863 status_notify (p
, NULL
);
864 redisplay_preserve_echo_area (13);
869 record_kill_process (p
, Qnil
);
873 /* Update P's status, since record_kill_process will make the
874 SIGCHLD handler update deleted_pid_list, not *P. */
876 if (p
->raw_status_new
)
878 symbol
= CONSP (p
->status
) ? XCAR (p
->status
) : p
->status
;
879 if (! (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)))
880 pset_status (p
, list2 (Qsignal
, make_number (SIGKILL
)));
882 p
->tick
= ++process_tick
;
883 status_notify (p
, NULL
);
884 redisplay_preserve_echo_area (13);
887 remove_process (process
);
891 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
892 doc
: /* Return the status of PROCESS.
893 The returned value is one of the following symbols:
894 run -- for a process that is running.
895 stop -- for a process stopped but continuable.
896 exit -- for a process that has exited.
897 signal -- for a process that has got a fatal signal.
898 open -- for a network stream connection that is open.
899 listen -- for a network stream server that is listening.
900 closed -- for a network stream connection that is closed.
901 connect -- when waiting for a non-blocking connection to complete.
902 failed -- when a non-blocking connection has failed.
903 nil -- if arg is a process name and no such process exists.
904 PROCESS may be a process, a buffer, the name of a process, or
905 nil, indicating the current buffer's process. */)
906 (register Lisp_Object process
)
908 register struct Lisp_Process
*p
;
909 register Lisp_Object status
;
911 if (STRINGP (process
))
912 process
= Fget_process (process
);
914 process
= get_process (process
);
919 p
= XPROCESS (process
);
920 if (p
->raw_status_new
)
924 status
= XCAR (status
);
925 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
927 if (EQ (status
, Qexit
))
929 else if (EQ (p
->command
, Qt
))
931 else if (EQ (status
, Qrun
))
937 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
939 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
940 If PROCESS has not yet exited or died, return 0. */)
941 (register Lisp_Object process
)
943 CHECK_PROCESS (process
);
944 if (XPROCESS (process
)->raw_status_new
)
945 update_status (XPROCESS (process
));
946 if (CONSP (XPROCESS (process
)->status
))
947 return XCAR (XCDR (XPROCESS (process
)->status
));
948 return make_number (0);
951 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
952 doc
: /* Return the process id of PROCESS.
953 This is the pid of the external process which PROCESS uses or talks to.
954 For a network connection, this value is nil. */)
955 (register Lisp_Object process
)
959 CHECK_PROCESS (process
);
960 pid
= XPROCESS (process
)->pid
;
961 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
964 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
965 doc
: /* Return the name of PROCESS, as a string.
966 This is the name of the program invoked in PROCESS,
967 possibly modified to make it unique among process names. */)
968 (register Lisp_Object process
)
970 CHECK_PROCESS (process
);
971 return XPROCESS (process
)->name
;
974 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
975 doc
: /* Return the command that was executed to start PROCESS.
976 This is a list of strings, the first string being the program executed
977 and the rest of the strings being the arguments given to it.
978 For a network or serial process, this is nil (process is running) or t
979 \(process is stopped). */)
980 (register Lisp_Object process
)
982 CHECK_PROCESS (process
);
983 return XPROCESS (process
)->command
;
986 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
987 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
988 This is the terminal that the process itself reads and writes on,
989 not the name of the pty that Emacs uses to talk with that terminal. */)
990 (register Lisp_Object process
)
992 CHECK_PROCESS (process
);
993 return XPROCESS (process
)->tty_name
;
996 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
998 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
1000 (register Lisp_Object process
, Lisp_Object buffer
)
1002 struct Lisp_Process
*p
;
1004 CHECK_PROCESS (process
);
1006 CHECK_BUFFER (buffer
);
1007 p
= XPROCESS (process
);
1008 pset_buffer (p
, buffer
);
1009 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1010 pset_childp (p
, Fplist_put (p
->childp
, QCbuffer
, buffer
));
1011 setup_process_coding_systems (process
);
1015 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
1017 doc
: /* Return the buffer PROCESS is associated with.
1018 The default process filter inserts output from PROCESS into this buffer. */)
1019 (register Lisp_Object process
)
1021 CHECK_PROCESS (process
);
1022 return XPROCESS (process
)->buffer
;
1025 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
1027 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1028 (register Lisp_Object process
)
1030 CHECK_PROCESS (process
);
1031 return XPROCESS (process
)->mark
;
1035 set_process_filter_masks (struct Lisp_Process
*p
)
1037 if (EQ (p
->filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1039 FD_CLR (p
->infd
, &input_wait_mask
);
1040 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1042 else if (EQ (p
->filter
, Qt
)
1043 /* Network or serial process not stopped: */
1044 && !EQ (p
->command
, Qt
))
1046 FD_SET (p
->infd
, &input_wait_mask
);
1047 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1051 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1053 doc
: /* Give PROCESS the filter function FILTER; nil means default.
1054 A value of t means stop accepting output from the process.
1056 When a process has a non-default filter, its buffer is not used for output.
1057 Instead, each time it does output, the entire string of output is
1058 passed to the filter.
1060 The filter gets two arguments: the process and the string of output.
1061 The string argument is normally a multibyte string, except:
1062 - if the process's input coding system is no-conversion or raw-text,
1063 it is a unibyte string (the non-converted input), or else
1064 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1065 string (the result of converting the decoded input multibyte
1066 string to unibyte with `string-make-unibyte'). */)
1067 (Lisp_Object process
, Lisp_Object filter
)
1069 CHECK_PROCESS (process
);
1070 struct Lisp_Process
*p
= XPROCESS (process
);
1072 /* Don't signal an error if the process's input file descriptor
1073 is closed. This could make debugging Lisp more difficult,
1074 for example when doing something like
1076 (setq process (start-process ...))
1078 (set-process-filter process ...) */
1081 filter
= Qinternal_default_process_filter
;
1083 pset_filter (p
, filter
);
1086 set_process_filter_masks (p
);
1088 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1089 pset_childp (p
, Fplist_put (p
->childp
, QCfilter
, filter
));
1090 setup_process_coding_systems (process
);
1094 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1096 doc
: /* Return the filter function of PROCESS.
1097 See `set-process-filter' for more info on filter functions. */)
1098 (register Lisp_Object process
)
1100 CHECK_PROCESS (process
);
1101 return XPROCESS (process
)->filter
;
1104 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1106 doc
: /* Give PROCESS the sentinel SENTINEL; nil for default.
1107 The sentinel is called as a function when the process changes state.
1108 It gets two arguments: the process, and a string describing the change. */)
1109 (register Lisp_Object process
, Lisp_Object sentinel
)
1111 struct Lisp_Process
*p
;
1113 CHECK_PROCESS (process
);
1114 p
= XPROCESS (process
);
1116 if (NILP (sentinel
))
1117 sentinel
= Qinternal_default_process_sentinel
;
1119 pset_sentinel (p
, sentinel
);
1120 if (NETCONN1_P (p
) || SERIALCONN1_P (p
) || PIPECONN1_P (p
))
1121 pset_childp (p
, Fplist_put (p
->childp
, QCsentinel
, sentinel
));
1125 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1127 doc
: /* Return the sentinel of PROCESS.
1128 See `set-process-sentinel' for more info on sentinels. */)
1129 (register Lisp_Object process
)
1131 CHECK_PROCESS (process
);
1132 return XPROCESS (process
)->sentinel
;
1135 DEFUN ("set-process-window-size", Fset_process_window_size
,
1136 Sset_process_window_size
, 3, 3, 0,
1137 doc
: /* Tell PROCESS that it has logical window size WIDTH by HEIGHT.
1138 Value is t if PROCESS was successfully told about the window size,
1140 (Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1142 CHECK_PROCESS (process
);
1144 /* All known platforms store window sizes as 'unsigned short'. */
1145 CHECK_RANGED_INTEGER (height
, 0, USHRT_MAX
);
1146 CHECK_RANGED_INTEGER (width
, 0, USHRT_MAX
);
1148 if (NETCONN_P (process
)
1149 || XPROCESS (process
)->infd
< 0
1150 || (set_window_size (XPROCESS (process
)->infd
,
1151 XINT (height
), XINT (width
))
1158 DEFUN ("set-process-inherit-coding-system-flag",
1159 Fset_process_inherit_coding_system_flag
,
1160 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1161 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1162 If the second argument FLAG is non-nil, then the variable
1163 `buffer-file-coding-system' of the buffer associated with PROCESS
1164 will be bound to the value of the coding system used to decode
1167 This is useful when the coding system specified for the process buffer
1168 leaves either the character code conversion or the end-of-line conversion
1169 unspecified, or if the coding system used to decode the process output
1170 is more appropriate for saving the process buffer.
1172 Binding the variable `inherit-process-coding-system' to non-nil before
1173 starting the process is an alternative way of setting the inherit flag
1174 for the process which will run.
1176 This function returns FLAG. */)
1177 (register Lisp_Object process
, Lisp_Object flag
)
1179 CHECK_PROCESS (process
);
1180 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1184 DEFUN ("set-process-query-on-exit-flag",
1185 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1187 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1188 If the second argument FLAG is non-nil, Emacs will query the user before
1189 exiting or killing a buffer if PROCESS is running. This function
1191 (register Lisp_Object process
, Lisp_Object flag
)
1193 CHECK_PROCESS (process
);
1194 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1198 DEFUN ("process-query-on-exit-flag",
1199 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1201 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1202 (register Lisp_Object process
)
1204 CHECK_PROCESS (process
);
1205 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1208 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1210 doc
: /* Return the contact info of PROCESS; t for a real child.
1211 For a network or serial connection, the value depends on the optional
1212 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1213 SERVICE) for a network connection or (PORT SPEED) for a serial
1214 connection. If KEY is t, the complete contact information for the
1215 connection is returned, else the specific value for the keyword KEY is
1216 returned. See `make-network-process' or `make-serial-process' for a
1218 If PROCESS is a non-blocking network process that hasn't been fully
1219 set up yet, this function will block until socket setup has completed. */)
1220 (Lisp_Object process
, Lisp_Object key
)
1222 Lisp_Object contact
;
1224 CHECK_PROCESS (process
);
1225 contact
= XPROCESS (process
)->childp
;
1227 #ifdef DATAGRAM_SOCKETS
1229 if (NETCONN_P (process
))
1230 wait_for_socket_fds (process
, "process-contact");
1232 if (DATAGRAM_CONN_P (process
)
1233 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1234 contact
= Fplist_put (contact
, QCremote
,
1235 Fprocess_datagram_address (process
));
1238 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
) && !PIPECONN_P (process
))
1241 if (NILP (key
) && NETCONN_P (process
))
1242 return list2 (Fplist_get (contact
, QChost
),
1243 Fplist_get (contact
, QCservice
));
1244 if (NILP (key
) && SERIALCONN_P (process
))
1245 return list2 (Fplist_get (contact
, QCport
),
1246 Fplist_get (contact
, QCspeed
));
1247 /* FIXME: Return a meaningful value (e.g., the child end of the pipe)
1248 if the pipe process is useful for purposes other than receiving
1250 if (NILP (key
) && PIPECONN_P (process
))
1252 return Fplist_get (contact
, key
);
1255 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1257 doc
: /* Return the plist of PROCESS. */)
1258 (register Lisp_Object process
)
1260 CHECK_PROCESS (process
);
1261 return XPROCESS (process
)->plist
;
1264 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1266 doc
: /* Replace the plist of PROCESS with PLIST. Return PLIST. */)
1267 (Lisp_Object process
, Lisp_Object plist
)
1269 CHECK_PROCESS (process
);
1272 pset_plist (XPROCESS (process
), plist
);
1276 #if 0 /* Turned off because we don't currently record this info
1277 in the process. Perhaps add it. */
1278 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1279 doc
: /* Return the connection type of PROCESS.
1280 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1281 a socket connection. */)
1282 (Lisp_Object process
)
1284 return XPROCESS (process
)->type
;
1288 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1289 doc
: /* Return the connection type of PROCESS.
1290 The value is either the symbol `real', `network', or `serial'.
1291 PROCESS may be a process, a buffer, the name of a process or buffer, or
1292 nil, indicating the current buffer's process. */)
1293 (Lisp_Object process
)
1296 proc
= get_process (process
);
1297 return XPROCESS (proc
)->type
;
1300 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1302 doc
: /* Convert network ADDRESS from internal format to a string.
1303 A 4 or 5 element vector represents an IPv4 address (with port number).
1304 An 8 or 9 element vector represents an IPv6 address (with port number).
1305 If optional second argument OMIT-PORT is non-nil, don't include a port
1306 number in the string, even when present in ADDRESS.
1307 Return nil if format of ADDRESS is invalid. */)
1308 (Lisp_Object address
, Lisp_Object omit_port
)
1313 if (STRINGP (address
)) /* AF_LOCAL */
1316 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1318 register struct Lisp_Vector
*p
= XVECTOR (address
);
1319 ptrdiff_t size
= p
->header
.size
;
1320 Lisp_Object args
[10];
1324 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1326 format
= "%d.%d.%d.%d";
1331 format
= "%d.%d.%d.%d:%d";
1334 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1336 format
= "%x:%x:%x:%x:%x:%x:%x:%x";
1341 format
= "[%x:%x:%x:%x:%x:%x:%x:%x]:%d";
1347 AUTO_STRING (format_obj
, format
);
1348 args
[0] = format_obj
;
1350 for (i
= 0; i
< nargs
; i
++)
1352 if (! RANGED_INTEGERP (0, p
->contents
[i
], 65535))
1355 if (nargs
<= 5 /* IPv4 */
1356 && i
< 4 /* host, not port */
1357 && XINT (p
->contents
[i
]) > 255)
1360 args
[i
+ 1] = p
->contents
[i
];
1363 return Fformat (nargs
+ 1, args
);
1366 if (CONSP (address
))
1368 AUTO_STRING (format
, "<Family %d>");
1369 return CALLN (Fformat
, format
, Fcar (address
));
1375 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1376 doc
: /* Return a list of all processes that are Emacs sub-processes. */)
1379 return Fmapcar (Qcdr
, Vprocess_alist
);
1382 /* Starting asynchronous inferior processes. */
1384 static void start_process_unwind (Lisp_Object proc
);
1386 DEFUN ("make-process", Fmake_process
, Smake_process
, 0, MANY
, 0,
1387 doc
: /* Start a program in a subprocess. Return the process object for it.
1389 This is similar to `start-process', but arguments are specified as
1390 keyword/argument pairs. The following arguments are defined:
1392 :name NAME -- NAME is name for process. It is modified if necessary
1395 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
1396 with the process. Process output goes at end of that buffer, unless
1397 you specify an output stream or filter function to handle the output.
1398 BUFFER may be also nil, meaning that this process is not associated
1401 :command COMMAND -- COMMAND is a list starting with the program file
1402 name, followed by strings to give to the program as arguments.
1404 :coding CODING -- If CODING is a symbol, it specifies the coding
1405 system used for both reading and writing for this process. If CODING
1406 is a cons (DECODING . ENCODING), DECODING is used for reading, and
1407 ENCODING is used for writing.
1409 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
1410 the process is running. If BOOL is not given, query before exiting.
1412 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
1413 In the stopped state, a process does not accept incoming data, but you
1414 can send outgoing data. The stopped state is cleared by
1415 `continue-process' and set by `stop-process'.
1417 :connection-type TYPE -- TYPE is control type of device used to
1418 communicate with subprocesses. Values are `pipe' to use a pipe, `pty'
1419 to use a pty, or nil to use the default specified through
1420 `process-connection-type'.
1422 :filter FILTER -- Install FILTER as the process filter.
1424 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
1426 :stderr STDERR -- STDERR is either a buffer or a pipe process attached
1427 to the standard error of subprocess. Specifying this implies
1428 `:connection-type' is set to `pipe'.
1430 usage: (make-process &rest ARGS) */)
1431 (ptrdiff_t nargs
, Lisp_Object
*args
)
1433 Lisp_Object buffer
, name
, command
, program
, proc
, contact
, current_dir
, tem
;
1434 Lisp_Object xstderr
, stderrproc
;
1435 ptrdiff_t count
= SPECPDL_INDEX ();
1441 /* Save arguments for process-contact and clone-process. */
1442 contact
= Flist (nargs
, args
);
1444 buffer
= Fplist_get (contact
, QCbuffer
);
1446 buffer
= Fget_buffer_create (buffer
);
1448 /* Make sure that the child will be able to chdir to the current
1449 buffer's current directory, or its unhandled equivalent. We
1450 can't just have the child check for an error when it does the
1451 chdir, since it's in a vfork. */
1452 current_dir
= encode_current_directory ();
1454 name
= Fplist_get (contact
, QCname
);
1455 CHECK_STRING (name
);
1457 command
= Fplist_get (contact
, QCcommand
);
1458 if (CONSP (command
))
1459 program
= XCAR (command
);
1463 if (!NILP (program
))
1464 CHECK_STRING (program
);
1467 xstderr
= Fplist_get (contact
, QCstderr
);
1468 if (PROCESSP (xstderr
))
1470 if (!PIPECONN_P (xstderr
))
1471 error ("Process is not a pipe process");
1472 stderrproc
= xstderr
;
1474 else if (!NILP (xstderr
))
1476 CHECK_STRING (program
);
1477 stderrproc
= CALLN (Fmake_pipe_process
,
1479 concat2 (name
, build_string (" stderr")),
1481 Fget_buffer_create (xstderr
));
1484 proc
= make_process (name
);
1485 /* If an error occurs and we can't start the process, we want to
1486 remove it from the process list. This means that each error
1487 check in create_process doesn't need to call remove_process
1488 itself; it's all taken care of here. */
1489 record_unwind_protect (start_process_unwind
, proc
);
1491 pset_childp (XPROCESS (proc
), Qt
);
1492 pset_plist (XPROCESS (proc
), Qnil
);
1493 pset_type (XPROCESS (proc
), Qreal
);
1494 pset_buffer (XPROCESS (proc
), buffer
);
1495 pset_sentinel (XPROCESS (proc
), Fplist_get (contact
, QCsentinel
));
1496 pset_filter (XPROCESS (proc
), Fplist_get (contact
, QCfilter
));
1497 pset_command (XPROCESS (proc
), Fcopy_sequence (command
));
1499 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
1500 XPROCESS (proc
)->kill_without_query
= 1;
1501 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
1502 pset_command (XPROCESS (proc
), Qt
);
1504 tem
= Fplist_get (contact
, QCconnection_type
);
1506 XPROCESS (proc
)->pty_flag
= true;
1507 else if (EQ (tem
, Qpipe
))
1508 XPROCESS (proc
)->pty_flag
= false;
1509 else if (NILP (tem
))
1510 XPROCESS (proc
)->pty_flag
= !NILP (Vprocess_connection_type
);
1512 report_file_error ("Unknown connection type", tem
);
1514 if (!NILP (stderrproc
))
1516 pset_stderrproc (XPROCESS (proc
), stderrproc
);
1518 XPROCESS (proc
)->pty_flag
= false;
1522 /* AKA GNUTLS_INITSTAGE(proc). */
1523 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1524 pset_gnutls_cred_type (XPROCESS (proc
), Qnil
);
1527 XPROCESS (proc
)->adaptive_read_buffering
1528 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1529 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1531 /* Make the process marker point into the process buffer (if any). */
1532 if (BUFFERP (buffer
))
1533 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1534 BUF_ZV (XBUFFER (buffer
)),
1535 BUF_ZV_BYTE (XBUFFER (buffer
)));
1538 /* Decide coding systems for communicating with the process. Here
1539 we don't setup the structure coding_system nor pay attention to
1540 unibyte mode. They are done in create_process. */
1542 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1543 Lisp_Object coding_systems
= Qt
;
1544 Lisp_Object val
, *args2
;
1546 tem
= Fplist_get (contact
, QCcoding
);
1554 val
= Vcoding_system_for_read
;
1557 ptrdiff_t nargs2
= 3 + XINT (Flength (command
));
1559 SAFE_ALLOCA_LISP (args2
, nargs2
);
1561 args2
[i
++] = Qstart_process
;
1563 args2
[i
++] = buffer
;
1564 for (tem2
= command
; CONSP (tem2
); tem2
= XCDR (tem2
))
1565 args2
[i
++] = XCAR (tem2
);
1566 if (!NILP (program
))
1567 coding_systems
= Ffind_operation_coding_system (nargs2
, args2
);
1568 if (CONSP (coding_systems
))
1569 val
= XCAR (coding_systems
);
1570 else if (CONSP (Vdefault_process_coding_system
))
1571 val
= XCAR (Vdefault_process_coding_system
);
1573 pset_decode_coding_system (XPROCESS (proc
), val
);
1582 val
= Vcoding_system_for_write
;
1585 if (EQ (coding_systems
, Qt
))
1587 ptrdiff_t nargs2
= 3 + XINT (Flength (command
));
1589 SAFE_ALLOCA_LISP (args2
, nargs2
);
1591 args2
[i
++] = Qstart_process
;
1593 args2
[i
++] = buffer
;
1594 for (tem2
= command
; CONSP (tem2
); tem2
= XCDR (tem2
))
1595 args2
[i
++] = XCAR (tem2
);
1596 if (!NILP (program
))
1597 coding_systems
= Ffind_operation_coding_system (nargs2
, args2
);
1599 if (CONSP (coding_systems
))
1600 val
= XCDR (coding_systems
);
1601 else if (CONSP (Vdefault_process_coding_system
))
1602 val
= XCDR (Vdefault_process_coding_system
);
1604 pset_encode_coding_system (XPROCESS (proc
), val
);
1605 /* Note: At this moment, the above coding system may leave
1606 text-conversion or eol-conversion unspecified. They will be
1607 decided after we read output from the process and decode it by
1608 some coding system, or just before we actually send a text to
1613 pset_decoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1614 XPROCESS (proc
)->decoding_carryover
= 0;
1615 pset_encoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1617 XPROCESS (proc
)->inherit_coding_system_flag
1618 = !(NILP (buffer
) || !inherit_process_coding_system
);
1620 if (!NILP (program
))
1622 Lisp_Object program_args
= XCDR (command
);
1624 /* If program file name is not absolute, search our path for it.
1625 Put the name we will really use in TEM. */
1626 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1627 && !(SCHARS (program
) > 1
1628 && IS_DEVICE_SEP (SREF (program
, 1))))
1631 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
,
1632 make_number (X_OK
), false);
1634 report_file_error ("Searching for program", program
);
1635 tem
= Fexpand_file_name (tem
, Qnil
);
1639 if (!NILP (Ffile_directory_p (program
)))
1640 error ("Specified program for new process is a directory");
1644 /* Remove "/:" from TEM. */
1645 tem
= remove_slash_colon (tem
);
1647 Lisp_Object arg_encoding
= Qnil
;
1649 /* Encode the file name and put it in NEW_ARGV.
1650 That's where the child will use it to execute the program. */
1651 tem
= list1 (ENCODE_FILE (tem
));
1652 ptrdiff_t new_argc
= 1;
1654 /* Here we encode arguments by the coding system used for sending
1655 data to the process. We don't support using different coding
1656 systems for encoding arguments and for encoding data sent to the
1659 for (Lisp_Object tem2
= program_args
; CONSP (tem2
); tem2
= XCDR (tem2
))
1661 Lisp_Object arg
= XCAR (tem2
);
1663 if (STRING_MULTIBYTE (arg
))
1665 if (NILP (arg_encoding
))
1666 arg_encoding
= (complement_process_encoding_system
1667 (XPROCESS (proc
)->encode_coding_system
));
1668 arg
= code_convert_string_norecord (arg
, arg_encoding
, 1);
1670 tem
= Fcons (arg
, tem
);
1674 /* Now that everything is encoded we can collect the strings into
1677 SAFE_NALLOCA (new_argv
, 1, new_argc
+ 1);
1678 new_argv
[new_argc
] = 0;
1680 for (ptrdiff_t i
= new_argc
- 1; i
>= 0; i
--)
1682 new_argv
[i
] = SSDATA (XCAR (tem
));
1686 create_process (proc
, new_argv
, current_dir
);
1692 return unbind_to (count
, proc
);
1695 /* This function is the unwind_protect form for Fstart_process. If
1696 PROC doesn't have its pid set, then we know someone has signaled
1697 an error and the process wasn't started successfully, so we should
1698 remove it from the process list. */
1700 start_process_unwind (Lisp_Object proc
)
1702 if (!PROCESSP (proc
))
1705 /* Was PROC started successfully?
1706 -2 is used for a pty with no process, eg for gdb. */
1707 if (XPROCESS (proc
)->pid
<= 0 && XPROCESS (proc
)->pid
!= -2)
1708 remove_process (proc
);
1711 /* If *FD_ADDR is nonnegative, close it, and mark it as closed. */
1714 close_process_fd (int *fd_addr
)
1724 /* Indexes of file descriptors in open_fds. */
1727 /* The pipe from Emacs to its subprocess. */
1729 WRITE_TO_SUBPROCESS
,
1731 /* The main pipe from the subprocess to Emacs. */
1732 READ_FROM_SUBPROCESS
,
1735 /* The pipe from the subprocess to Emacs that is closed when the
1736 subprocess execs. */
1737 READ_FROM_EXEC_MONITOR
,
1741 verify (PROCESS_OPEN_FDS
== EXEC_MONITOR_OUTPUT
+ 1);
1744 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1746 struct Lisp_Process
*p
= XPROCESS (process
);
1747 int inchannel
, outchannel
;
1750 int forkin
, forkout
, forkerr
= -1;
1752 char pty_name
[PTY_NAME_SIZE
];
1753 Lisp_Object lisp_pty_name
= Qnil
;
1756 inchannel
= outchannel
= -1;
1759 outchannel
= inchannel
= allocate_pty (pty_name
);
1763 p
->open_fd
[READ_FROM_SUBPROCESS
] = inchannel
;
1764 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1765 /* On most USG systems it does not work to open the pty's tty here,
1766 then close it and reopen it in the child. */
1767 /* Don't let this terminal become our controlling terminal
1768 (in case we don't have one). */
1769 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1771 report_file_error ("Opening pty", Qnil
);
1772 p
->open_fd
[SUBPROCESS_STDIN
] = forkin
;
1774 forkin
= forkout
= -1;
1775 #endif /* not USG, or USG_SUBTTY_WORKS */
1777 lisp_pty_name
= build_string (pty_name
);
1781 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
1782 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
1783 report_file_error ("Creating pipe", Qnil
);
1784 forkin
= p
->open_fd
[SUBPROCESS_STDIN
];
1785 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
1786 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
1787 forkout
= p
->open_fd
[SUBPROCESS_STDOUT
];
1789 if (!NILP (p
->stderrproc
))
1791 struct Lisp_Process
*pp
= XPROCESS (p
->stderrproc
);
1793 forkerr
= pp
->open_fd
[SUBPROCESS_STDOUT
];
1795 /* Close unnecessary file descriptors. */
1796 close_process_fd (&pp
->open_fd
[WRITE_TO_SUBPROCESS
]);
1797 close_process_fd (&pp
->open_fd
[SUBPROCESS_STDIN
]);
1802 if (emacs_pipe (p
->open_fd
+ READ_FROM_EXEC_MONITOR
) != 0)
1803 report_file_error ("Creating pipe", Qnil
);
1806 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1807 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1809 /* Record this as an active process, with its channels. */
1810 chan_process
[inchannel
] = process
;
1811 p
->infd
= inchannel
;
1812 p
->outfd
= outchannel
;
1814 /* Previously we recorded the tty descriptor used in the subprocess.
1815 It was only used for getting the foreground tty process, so now
1816 we just reopen the device (see emacs_get_tty_pgrp) as this is
1817 more portable (see USG_SUBTTY_WORKS above). */
1819 p
->pty_flag
= pty_flag
;
1820 pset_status (p
, Qrun
);
1822 if (!EQ (p
->command
, Qt
))
1824 FD_SET (inchannel
, &input_wait_mask
);
1825 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1828 if (inchannel
> max_process_desc
)
1829 max_process_desc
= inchannel
;
1831 /* This may signal an error. */
1832 setup_process_coding_systems (process
);
1835 block_child_signal (&oldset
);
1838 /* vfork, and prevent local vars from being clobbered by the vfork. */
1839 Lisp_Object
volatile current_dir_volatile
= current_dir
;
1840 Lisp_Object
volatile lisp_pty_name_volatile
= lisp_pty_name
;
1841 char **volatile new_argv_volatile
= new_argv
;
1842 int volatile forkin_volatile
= forkin
;
1843 int volatile forkout_volatile
= forkout
;
1844 int volatile forkerr_volatile
= forkerr
;
1845 struct Lisp_Process
*p_volatile
= p
;
1849 current_dir
= current_dir_volatile
;
1850 lisp_pty_name
= lisp_pty_name_volatile
;
1851 new_argv
= new_argv_volatile
;
1852 forkin
= forkin_volatile
;
1853 forkout
= forkout_volatile
;
1854 forkerr
= forkerr_volatile
;
1857 pty_flag
= p
->pty_flag
;
1860 #endif /* not WINDOWSNT */
1862 /* Make the pty be the controlling terminal of the process. */
1864 /* First, disconnect its current controlling terminal. */
1865 /* We tried doing setsid only if pty_flag, but it caused
1866 process_set_signal to fail on SGI when using a pipe. */
1868 /* Make the pty's terminal the controlling terminal. */
1869 if (pty_flag
&& forkin
>= 0)
1872 /* We ignore the return value
1873 because faith@cs.unc.edu says that is necessary on Linux. */
1874 ioctl (forkin
, TIOCSCTTY
, 0);
1877 #if defined (LDISC1)
1878 if (pty_flag
&& forkin
>= 0)
1881 tcgetattr (forkin
, &t
);
1883 if (tcsetattr (forkin
, TCSANOW
, &t
) < 0)
1884 emacs_perror ("create_process/tcsetattr LDISC1");
1887 #if defined (NTTYDISC) && defined (TIOCSETD)
1888 if (pty_flag
&& forkin
>= 0)
1890 /* Use new line discipline. */
1891 int ldisc
= NTTYDISC
;
1892 ioctl (forkin
, TIOCSETD
, &ldisc
);
1897 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1898 can do TIOCSPGRP only to the process's controlling tty. */
1901 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1902 I can't test it since I don't have 4.3. */
1903 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1906 ioctl (j
, TIOCNOTTY
, 0);
1910 #endif /* TIOCNOTTY */
1912 #if !defined (DONT_REOPEN_PTY)
1913 /*** There is a suggestion that this ought to be a
1914 conditional on TIOCSPGRP, or !defined TIOCSCTTY.
1915 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1916 that system does seem to need this code, even though
1917 both TIOCSCTTY is defined. */
1918 /* Now close the pty (if we had it open) and reopen it.
1919 This makes the pty the controlling terminal of the subprocess. */
1923 /* I wonder if emacs_close (emacs_open (SSDATA (lisp_pty_name), ...))
1926 emacs_close (forkin
);
1927 forkout
= forkin
= emacs_open (SSDATA (lisp_pty_name
), O_RDWR
, 0);
1931 emacs_perror (SSDATA (lisp_pty_name
));
1932 _exit (EXIT_CANCELED
);
1936 #endif /* not DONT_REOPEN_PTY */
1938 #ifdef SETUP_SLAVE_PTY
1943 #endif /* SETUP_SLAVE_PTY */
1944 #endif /* HAVE_PTYS */
1946 signal (SIGINT
, SIG_DFL
);
1947 signal (SIGQUIT
, SIG_DFL
);
1949 signal (SIGPROF
, SIG_DFL
);
1952 /* Emacs ignores SIGPIPE, but the child should not. */
1953 signal (SIGPIPE
, SIG_DFL
);
1955 /* Stop blocking SIGCHLD in the child. */
1956 unblock_child_signal (&oldset
);
1959 child_setup_tty (forkout
);
1964 pid
= child_setup (forkin
, forkout
, forkerr
, new_argv
, 1, current_dir
);
1965 #else /* not WINDOWSNT */
1966 child_setup (forkin
, forkout
, forkerr
, new_argv
, 1, current_dir
);
1967 #endif /* not WINDOWSNT */
1970 /* Back in the parent process. */
1972 vfork_errno
= errno
;
1977 /* Stop blocking in the parent. */
1978 unblock_child_signal (&oldset
);
1982 report_file_errno ("Doing vfork", Qnil
, vfork_errno
);
1985 /* vfork succeeded. */
1987 /* Close the pipe ends that the child uses, or the child's pty. */
1988 close_process_fd (&p
->open_fd
[SUBPROCESS_STDIN
]);
1989 close_process_fd (&p
->open_fd
[SUBPROCESS_STDOUT
]);
1992 register_child (pid
, inchannel
);
1993 #endif /* WINDOWSNT */
1995 pset_tty_name (p
, lisp_pty_name
);
1998 /* Wait for child_setup to complete in case that vfork is
1999 actually defined as fork. The descriptor
2000 XPROCESS (proc)->open_fd[EXEC_MONITOR_OUTPUT]
2001 of a pipe is closed at the child side either by close-on-exec
2002 on successful execve or the _exit call in child_setup. */
2006 close_process_fd (&p
->open_fd
[EXEC_MONITOR_OUTPUT
]);
2007 emacs_read (p
->open_fd
[READ_FROM_EXEC_MONITOR
], &dummy
, 1);
2008 close_process_fd (&p
->open_fd
[READ_FROM_EXEC_MONITOR
]);
2011 if (!NILP (p
->stderrproc
))
2013 struct Lisp_Process
*pp
= XPROCESS (p
->stderrproc
);
2014 close_process_fd (&pp
->open_fd
[SUBPROCESS_STDOUT
]);
2020 create_pty (Lisp_Object process
)
2022 struct Lisp_Process
*p
= XPROCESS (process
);
2023 char pty_name
[PTY_NAME_SIZE
];
2024 int pty_fd
= !p
->pty_flag
? -1 : allocate_pty (pty_name
);
2028 p
->open_fd
[SUBPROCESS_STDIN
] = pty_fd
;
2029 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2030 /* On most USG systems it does not work to open the pty's tty here,
2031 then close it and reopen it in the child. */
2032 /* Don't let this terminal become our controlling terminal
2033 (in case we don't have one). */
2034 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2036 report_file_error ("Opening pty", Qnil
);
2037 p
->open_fd
[WRITE_TO_SUBPROCESS
] = forkout
;
2038 #if defined (DONT_REOPEN_PTY)
2039 /* In the case that vfork is defined as fork, the parent process
2040 (Emacs) may send some data before the child process completes
2041 tty options setup. So we setup tty before forking. */
2042 child_setup_tty (forkout
);
2043 #endif /* DONT_REOPEN_PTY */
2044 #endif /* not USG, or USG_SUBTTY_WORKS */
2046 fcntl (pty_fd
, F_SETFL
, O_NONBLOCK
);
2048 /* Record this as an active process, with its channels.
2049 As a result, child_setup will close Emacs's side of the pipes. */
2050 chan_process
[pty_fd
] = process
;
2054 /* Previously we recorded the tty descriptor used in the subprocess.
2055 It was only used for getting the foreground tty process, so now
2056 we just reopen the device (see emacs_get_tty_pgrp) as this is
2057 more portable (see USG_SUBTTY_WORKS above). */
2060 pset_status (p
, Qrun
);
2061 setup_process_coding_systems (process
);
2063 FD_SET (pty_fd
, &input_wait_mask
);
2064 FD_SET (pty_fd
, &non_keyboard_wait_mask
);
2065 if (pty_fd
> max_process_desc
)
2066 max_process_desc
= pty_fd
;
2068 pset_tty_name (p
, build_string (pty_name
));
2074 DEFUN ("make-pipe-process", Fmake_pipe_process
, Smake_pipe_process
,
2076 doc
: /* Create and return a bidirectional pipe process.
2078 In Emacs, pipes are represented by process objects, so input and
2079 output work as for subprocesses, and `delete-process' closes a pipe.
2080 However, a pipe process has no process id, it cannot be signaled,
2081 and the status codes are different from normal processes.
2083 Arguments are specified as keyword/argument pairs. The following
2084 arguments are defined:
2086 :name NAME -- NAME is the name of the process. It is modified if necessary to make it unique.
2088 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2089 with the process. Process output goes at the end of that buffer,
2090 unless you specify an output stream or filter function to handle the
2091 output. If BUFFER is not given, the value of NAME is used.
2093 :coding CODING -- If CODING is a symbol, it specifies the coding
2094 system used for both reading and writing for this process. If CODING
2095 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2096 ENCODING is used for writing.
2098 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2099 the process is running. If BOOL is not given, query before exiting.
2101 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2102 In the stopped state, a pipe process does not accept incoming data,
2103 but you can send outgoing data. The stopped state is cleared by
2104 `continue-process' and set by `stop-process'.
2106 :filter FILTER -- Install FILTER as the process filter.
2108 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2110 usage: (make-pipe-process &rest ARGS) */)
2111 (ptrdiff_t nargs
, Lisp_Object
*args
)
2113 Lisp_Object proc
, contact
;
2114 struct Lisp_Process
*p
;
2115 Lisp_Object name
, buffer
;
2117 ptrdiff_t specpdl_count
;
2118 int inchannel
, outchannel
;
2123 contact
= Flist (nargs
, args
);
2125 name
= Fplist_get (contact
, QCname
);
2126 CHECK_STRING (name
);
2127 proc
= make_process (name
);
2128 specpdl_count
= SPECPDL_INDEX ();
2129 record_unwind_protect (remove_process
, proc
);
2130 p
= XPROCESS (proc
);
2132 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
2133 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
2134 report_file_error ("Creating pipe", Qnil
);
2135 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
2136 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
2138 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2139 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2142 register_aux_fd (inchannel
);
2145 /* Record this as an active process, with its channels. */
2146 chan_process
[inchannel
] = proc
;
2147 p
->infd
= inchannel
;
2148 p
->outfd
= outchannel
;
2150 if (inchannel
> max_process_desc
)
2151 max_process_desc
= inchannel
;
2153 buffer
= Fplist_get (contact
, QCbuffer
);
2156 buffer
= Fget_buffer_create (buffer
);
2157 pset_buffer (p
, buffer
);
2159 pset_childp (p
, contact
);
2160 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2161 pset_type (p
, Qpipe
);
2162 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2163 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2165 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2166 p
->kill_without_query
= 1;
2167 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2168 pset_command (p
, Qt
);
2169 eassert (! p
->pty_flag
);
2171 if (!EQ (p
->command
, Qt
))
2173 FD_SET (inchannel
, &input_wait_mask
);
2174 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2176 p
->adaptive_read_buffering
2177 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
2178 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
2180 /* Make the process marker point into the process buffer (if any). */
2181 if (BUFFERP (buffer
))
2182 set_marker_both (p
->mark
, buffer
,
2183 BUF_ZV (XBUFFER (buffer
)),
2184 BUF_ZV_BYTE (XBUFFER (buffer
)));
2187 /* Setup coding systems for communicating with the network stream. */
2189 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
2190 Lisp_Object coding_systems
= Qt
;
2193 tem
= Fplist_get (contact
, QCcoding
);
2201 else if (!NILP (Vcoding_system_for_read
))
2202 val
= Vcoding_system_for_read
;
2203 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2204 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2205 /* We dare not decode end-of-line format by setting VAL to
2206 Qraw_text, because the existing Emacs Lisp libraries
2207 assume that they receive bare code including a sequence of
2212 if (CONSP (coding_systems
))
2213 val
= XCAR (coding_systems
);
2214 else if (CONSP (Vdefault_process_coding_system
))
2215 val
= XCAR (Vdefault_process_coding_system
);
2219 pset_decode_coding_system (p
, val
);
2227 else if (!NILP (Vcoding_system_for_write
))
2228 val
= Vcoding_system_for_write
;
2229 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
2233 if (CONSP (coding_systems
))
2234 val
= XCDR (coding_systems
);
2235 else if (CONSP (Vdefault_process_coding_system
))
2236 val
= XCDR (Vdefault_process_coding_system
);
2240 pset_encode_coding_system (p
, val
);
2242 /* This may signal an error. */
2243 setup_process_coding_systems (proc
);
2245 specpdl_ptr
= specpdl
+ specpdl_count
;
2251 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2252 The address family of sa is not included in the result. */
2255 conv_sockaddr_to_lisp (struct sockaddr
*sa
, ptrdiff_t len
)
2257 Lisp_Object address
;
2260 struct Lisp_Vector
*p
;
2262 /* Workaround for a bug in getsockname on BSD: Names bound to
2263 sockets in the UNIX domain are inaccessible; getsockname returns
2264 a zero length name. */
2265 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2266 return empty_unibyte_string
;
2268 switch (sa
->sa_family
)
2272 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2273 len
= sizeof (sin
->sin_addr
) + 1;
2274 address
= Fmake_vector (make_number (len
), Qnil
);
2275 p
= XVECTOR (address
);
2276 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2277 cp
= (unsigned char *) &sin
->sin_addr
;
2283 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2284 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2285 len
= sizeof (sin6
->sin6_addr
) / 2 + 1;
2286 address
= Fmake_vector (make_number (len
), Qnil
);
2287 p
= XVECTOR (address
);
2288 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2289 for (i
= 0; i
< len
; i
++)
2290 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2294 #ifdef HAVE_LOCAL_SOCKETS
2297 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2298 ptrdiff_t name_length
= len
- offsetof (struct sockaddr_un
, sun_path
);
2299 /* If the first byte is NUL, the name is a Linux abstract
2300 socket name, and the name can contain embedded NULs. If
2301 it's not, we have a NUL-terminated string. Be careful not
2302 to walk past the end of the object looking for the name
2303 terminator, however. */
2304 if (name_length
> 0 && sockun
->sun_path
[0] != '\0')
2306 const char *terminator
2307 = memchr (sockun
->sun_path
, '\0', name_length
);
2310 name_length
= terminator
- (const char *) sockun
->sun_path
;
2313 return make_unibyte_string (sockun
->sun_path
, name_length
);
2317 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2318 address
= Fcons (make_number (sa
->sa_family
),
2319 Fmake_vector (make_number (len
), Qnil
));
2320 p
= XVECTOR (XCDR (address
));
2321 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2327 p
->contents
[i
++] = make_number (*cp
++);
2333 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2336 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2338 struct Lisp_Vector
*p
;
2340 if (VECTORP (address
))
2342 p
= XVECTOR (address
);
2343 if (p
->header
.size
== 5)
2346 return sizeof (struct sockaddr_in
);
2349 else if (p
->header
.size
== 9)
2351 *familyp
= AF_INET6
;
2352 return sizeof (struct sockaddr_in6
);
2356 #ifdef HAVE_LOCAL_SOCKETS
2357 else if (STRINGP (address
))
2359 *familyp
= AF_LOCAL
;
2360 return sizeof (struct sockaddr_un
);
2363 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2364 && VECTORP (XCDR (address
)))
2366 struct sockaddr
*sa
;
2367 p
= XVECTOR (XCDR (address
));
2368 if (MAX_ALLOCA
- sizeof sa
->sa_family
< p
->header
.size
)
2370 *familyp
= XINT (XCAR (address
));
2371 return p
->header
.size
+ sizeof (sa
->sa_family
);
2376 /* Convert an address object (vector or string) to an internal sockaddr.
2378 The address format has been basically validated by
2379 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2380 it could have come from user data. So if FAMILY is not valid,
2381 we return after zeroing *SA. */
2384 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2386 register struct Lisp_Vector
*p
;
2387 register unsigned char *cp
= NULL
;
2391 memset (sa
, 0, len
);
2393 if (VECTORP (address
))
2395 p
= XVECTOR (address
);
2396 if (family
== AF_INET
)
2398 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2399 len
= sizeof (sin
->sin_addr
) + 1;
2400 hostport
= XINT (p
->contents
[--len
]);
2401 sin
->sin_port
= htons (hostport
);
2402 cp
= (unsigned char *)&sin
->sin_addr
;
2403 sa
->sa_family
= family
;
2406 else if (family
== AF_INET6
)
2408 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2409 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2410 len
= sizeof (sin6
->sin6_addr
) / 2 + 1;
2411 hostport
= XINT (p
->contents
[--len
]);
2412 sin6
->sin6_port
= htons (hostport
);
2413 for (i
= 0; i
< len
; i
++)
2414 if (INTEGERP (p
->contents
[i
]))
2416 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2419 sa
->sa_family
= family
;
2426 else if (STRINGP (address
))
2428 #ifdef HAVE_LOCAL_SOCKETS
2429 if (family
== AF_LOCAL
)
2431 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2432 cp
= SDATA (address
);
2433 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2434 sockun
->sun_path
[i
] = *cp
++;
2435 sa
->sa_family
= family
;
2442 p
= XVECTOR (XCDR (address
));
2443 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2446 for (i
= 0; i
< len
; i
++)
2447 if (INTEGERP (p
->contents
[i
]))
2448 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2451 #ifdef DATAGRAM_SOCKETS
2452 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2454 doc
: /* Get the current datagram address associated with PROCESS.
2455 If PROCESS is a non-blocking network process that hasn't been fully
2456 set up yet, this function will block until socket setup has completed. */)
2457 (Lisp_Object process
)
2461 CHECK_PROCESS (process
);
2463 if (NETCONN_P (process
))
2464 wait_for_socket_fds (process
, "process-datagram-address");
2466 if (!DATAGRAM_CONN_P (process
))
2469 channel
= XPROCESS (process
)->infd
;
2470 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2471 datagram_address
[channel
].len
);
2474 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2476 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2477 Return nil upon error setting address, ADDRESS otherwise.
2479 If PROCESS is a non-blocking network process that hasn't been fully
2480 set up yet, this function will block until socket setup has completed. */)
2481 (Lisp_Object process
, Lisp_Object address
)
2487 CHECK_PROCESS (process
);
2489 if (NETCONN_P (process
))
2490 wait_for_socket_fds (process
, "set-process-datagram-address");
2492 if (!DATAGRAM_CONN_P (process
))
2495 channel
= XPROCESS (process
)->infd
;
2497 len
= get_lisp_to_sockaddr_size (address
, &family
);
2498 if (len
== 0 || datagram_address
[channel
].len
!= len
)
2500 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2506 static const struct socket_options
{
2507 /* The name of this option. Should be lowercase version of option
2508 name without SO_ prefix. */
2510 /* Option level SOL_... */
2512 /* Option number SO_... */
2514 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2515 enum { OPIX_NONE
= 0, OPIX_MISC
= 1, OPIX_REUSEADDR
= 2 } optbit
;
2516 } socket_options
[] =
2518 #ifdef SO_BINDTODEVICE
2519 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2522 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2525 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2528 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2531 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2534 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2537 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2540 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2542 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2545 /* Set option OPT to value VAL on socket S.
2547 Return (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2548 Signals an error if setting a known option fails.
2552 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2555 const struct socket_options
*sopt
;
2560 name
= SSDATA (SYMBOL_NAME (opt
));
2561 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2562 if (strcmp (name
, sopt
->name
) == 0)
2565 switch (sopt
->opttype
)
2570 optval
= NILP (val
) ? 0 : 1;
2571 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2572 &optval
, sizeof (optval
));
2579 if (TYPE_RANGED_INTEGERP (int, val
))
2580 optval
= XINT (val
);
2582 error ("Bad option value for %s", name
);
2583 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2584 &optval
, sizeof (optval
));
2588 #ifdef SO_BINDTODEVICE
2591 char devname
[IFNAMSIZ
+ 1];
2593 /* This is broken, at least in the Linux 2.4 kernel.
2594 To unbind, the arg must be a zero integer, not the empty string.
2595 This should work on all systems. KFS. 2003-09-23. */
2596 memset (devname
, 0, sizeof devname
);
2599 char *arg
= SSDATA (val
);
2600 int len
= min (strlen (arg
), IFNAMSIZ
);
2601 memcpy (devname
, arg
, len
);
2603 else if (!NILP (val
))
2604 error ("Bad option value for %s", name
);
2605 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2614 struct linger linger
;
2617 linger
.l_linger
= 0;
2618 if (TYPE_RANGED_INTEGERP (int, val
))
2619 linger
.l_linger
= XINT (val
);
2621 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2622 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2623 &linger
, sizeof (linger
));
2634 int setsockopt_errno
= errno
;
2635 report_file_errno ("Cannot set network option", list2 (opt
, val
),
2639 return (1 << sopt
->optbit
);
2643 DEFUN ("set-network-process-option",
2644 Fset_network_process_option
, Sset_network_process_option
,
2646 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2647 See `make-network-process' for a list of options and values.
2648 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2649 OPTION is not a supported option, return nil instead; otherwise return t.
2651 If PROCESS is a non-blocking network process that hasn't been fully
2652 set up yet, this function will block until socket setup has completed. */)
2653 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2656 struct Lisp_Process
*p
;
2658 CHECK_PROCESS (process
);
2659 p
= XPROCESS (process
);
2660 if (!NETCONN1_P (p
))
2661 error ("Process is not a network process");
2663 wait_for_socket_fds (process
, "set-network-process-option");
2667 error ("Process is not running");
2669 if (set_socket_option (s
, option
, value
))
2671 pset_childp (p
, Fplist_put (p
->childp
, option
, value
));
2675 if (NILP (no_error
))
2676 error ("Unknown or unsupported option");
2682 DEFUN ("serial-process-configure",
2683 Fserial_process_configure
,
2684 Sserial_process_configure
,
2686 doc
: /* Configure speed, bytesize, etc. of a serial process.
2688 Arguments are specified as keyword/argument pairs. Attributes that
2689 are not given are re-initialized from the process's current
2690 configuration (available via the function `process-contact') or set to
2691 reasonable default values. The following arguments are defined:
2697 -- Any of these arguments can be given to identify the process that is
2698 to be configured. If none of these arguments is given, the current
2699 buffer's process is used.
2701 :speed SPEED -- SPEED is the speed of the serial port in bits per
2702 second, also called baud rate. Any value can be given for SPEED, but
2703 most serial ports work only at a few defined values between 1200 and
2704 115200, with 9600 being the most common value. If SPEED is nil, the
2705 serial port is not configured any further, i.e., all other arguments
2706 are ignored. This may be useful for special serial ports such as
2707 Bluetooth-to-serial converters which can only be configured through AT
2708 commands. A value of nil for SPEED can be used only when passed
2709 through `make-serial-process' or `serial-term'.
2711 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2712 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2714 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2715 `odd' (use odd parity), or the symbol `even' (use even parity). If
2716 PARITY is not given, no parity is used.
2718 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2719 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2720 is not given or nil, 1 stopbit is used.
2722 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2723 flowcontrol to be used, which is either nil (don't use flowcontrol),
2724 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2725 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2726 flowcontrol is used.
2728 `serial-process-configure' is called by `make-serial-process' for the
2729 initial configuration of the serial port.
2733 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2735 \(serial-process-configure
2736 :buffer "COM1" :stopbits 1 :parity \\='odd :flowcontrol \\='hw)
2738 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2740 usage: (serial-process-configure &rest ARGS) */)
2741 (ptrdiff_t nargs
, Lisp_Object
*args
)
2743 struct Lisp_Process
*p
;
2744 Lisp_Object contact
= Qnil
;
2745 Lisp_Object proc
= Qnil
;
2747 contact
= Flist (nargs
, args
);
2749 proc
= Fplist_get (contact
, QCprocess
);
2751 proc
= Fplist_get (contact
, QCname
);
2753 proc
= Fplist_get (contact
, QCbuffer
);
2755 proc
= Fplist_get (contact
, QCport
);
2756 proc
= get_process (proc
);
2757 p
= XPROCESS (proc
);
2758 if (!EQ (p
->type
, Qserial
))
2759 error ("Not a serial process");
2761 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2764 serial_configure (p
, contact
);
2768 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2770 doc
: /* Create and return a serial port process.
2772 In Emacs, serial port connections are represented by process objects,
2773 so input and output work as for subprocesses, and `delete-process'
2774 closes a serial port connection. However, a serial process has no
2775 process id, it cannot be signaled, and the status codes are different
2776 from normal processes.
2778 `make-serial-process' creates a process and a buffer, on which you
2779 probably want to use `process-send-string'. Try \\[serial-term] for
2780 an interactive terminal. See below for examples.
2782 Arguments are specified as keyword/argument pairs. The following
2783 arguments are defined:
2785 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2786 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2787 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2788 the backslashes in strings).
2790 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2791 which this function calls.
2793 :name NAME -- NAME is the name of the process. If NAME is not given,
2794 the value of PORT is used.
2796 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2797 with the process. Process output goes at the end of that buffer,
2798 unless you specify an output stream or filter function to handle the
2799 output. If BUFFER is not given, the value of NAME is used.
2801 :coding CODING -- If CODING is a symbol, it specifies the coding
2802 system used for both reading and writing for this process. If CODING
2803 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2804 ENCODING is used for writing.
2806 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2807 the process is running. If BOOL is not given, query before exiting.
2809 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2810 In the stopped state, a serial process does not accept incoming data,
2811 but you can send outgoing data. The stopped state is cleared by
2812 `continue-process' and set by `stop-process'.
2814 :filter FILTER -- Install FILTER as the process filter.
2816 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2818 :plist PLIST -- Install PLIST as the initial plist of the process.
2824 -- This function calls `serial-process-configure' to handle these
2827 The original argument list, possibly modified by later configuration,
2828 is available via the function `process-contact'.
2832 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2834 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2836 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity \\='odd)
2838 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2840 usage: (make-serial-process &rest ARGS) */)
2841 (ptrdiff_t nargs
, Lisp_Object
*args
)
2844 Lisp_Object proc
, contact
, port
;
2845 struct Lisp_Process
*p
;
2846 Lisp_Object name
, buffer
;
2847 Lisp_Object tem
, val
;
2848 ptrdiff_t specpdl_count
;
2853 contact
= Flist (nargs
, args
);
2855 port
= Fplist_get (contact
, QCport
);
2857 error ("No port specified");
2858 CHECK_STRING (port
);
2860 if (NILP (Fplist_member (contact
, QCspeed
)))
2861 error (":speed not specified");
2862 if (!NILP (Fplist_get (contact
, QCspeed
)))
2863 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2865 name
= Fplist_get (contact
, QCname
);
2868 CHECK_STRING (name
);
2869 proc
= make_process (name
);
2870 specpdl_count
= SPECPDL_INDEX ();
2871 record_unwind_protect (remove_process
, proc
);
2872 p
= XPROCESS (proc
);
2874 fd
= serial_open (port
);
2875 p
->open_fd
[SUBPROCESS_STDIN
] = fd
;
2878 if (fd
> max_process_desc
)
2879 max_process_desc
= fd
;
2880 chan_process
[fd
] = proc
;
2882 buffer
= Fplist_get (contact
, QCbuffer
);
2885 buffer
= Fget_buffer_create (buffer
);
2886 pset_buffer (p
, buffer
);
2888 pset_childp (p
, contact
);
2889 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2890 pset_type (p
, Qserial
);
2891 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2892 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2894 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2895 p
->kill_without_query
= 1;
2896 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2897 pset_command (p
, Qt
);
2898 eassert (! p
->pty_flag
);
2900 if (!EQ (p
->command
, Qt
))
2902 FD_SET (fd
, &input_wait_mask
);
2903 FD_SET (fd
, &non_keyboard_wait_mask
);
2906 if (BUFFERP (buffer
))
2908 set_marker_both (p
->mark
, buffer
,
2909 BUF_ZV (XBUFFER (buffer
)),
2910 BUF_ZV_BYTE (XBUFFER (buffer
)));
2913 tem
= Fplist_member (contact
, QCcoding
);
2914 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2920 val
= XCAR (XCDR (tem
));
2924 else if (!NILP (Vcoding_system_for_read
))
2925 val
= Vcoding_system_for_read
;
2926 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2927 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2929 pset_decode_coding_system (p
, val
);
2934 val
= XCAR (XCDR (tem
));
2938 else if (!NILP (Vcoding_system_for_write
))
2939 val
= Vcoding_system_for_write
;
2940 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2941 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2943 pset_encode_coding_system (p
, val
);
2945 setup_process_coding_systems (proc
);
2946 pset_decoding_buf (p
, empty_unibyte_string
);
2947 p
->decoding_carryover
= 0;
2948 pset_encoding_buf (p
, empty_unibyte_string
);
2949 p
->inherit_coding_system_flag
2950 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2952 Fserial_process_configure (nargs
, args
);
2954 specpdl_ptr
= specpdl
+ specpdl_count
;
2960 set_network_socket_coding_system (Lisp_Object proc
, Lisp_Object host
,
2961 Lisp_Object service
, Lisp_Object name
)
2964 struct Lisp_Process
*p
= XPROCESS (proc
);
2965 Lisp_Object contact
= p
->childp
;
2966 Lisp_Object coding_systems
= Qt
;
2969 tem
= Fplist_member (contact
, QCcoding
);
2970 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2971 tem
= Qnil
; /* No error message (too late!). */
2973 /* Setup coding systems for communicating with the network stream. */
2974 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
2978 val
= XCAR (XCDR (tem
));
2982 else if (!NILP (Vcoding_system_for_read
))
2983 val
= Vcoding_system_for_read
;
2984 else if ((!NILP (p
->buffer
)
2985 && NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
2986 || (NILP (p
->buffer
)
2987 && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2988 /* We dare not decode end-of-line format by setting VAL to
2989 Qraw_text, because the existing Emacs Lisp libraries
2990 assume that they receive bare code including a sequence of
2995 if (NILP (host
) || NILP (service
))
2996 coding_systems
= Qnil
;
2998 coding_systems
= CALLN (Ffind_operation_coding_system
,
2999 Qopen_network_stream
, name
, p
->buffer
,
3001 if (CONSP (coding_systems
))
3002 val
= XCAR (coding_systems
);
3003 else if (CONSP (Vdefault_process_coding_system
))
3004 val
= XCAR (Vdefault_process_coding_system
);
3008 pset_decode_coding_system (p
, val
);
3012 val
= XCAR (XCDR (tem
));
3016 else if (!NILP (Vcoding_system_for_write
))
3017 val
= Vcoding_system_for_write
;
3018 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3022 if (EQ (coding_systems
, Qt
))
3024 if (NILP (host
) || NILP (service
))
3025 coding_systems
= Qnil
;
3027 coding_systems
= CALLN (Ffind_operation_coding_system
,
3028 Qopen_network_stream
, name
, p
->buffer
,
3031 if (CONSP (coding_systems
))
3032 val
= XCDR (coding_systems
);
3033 else if (CONSP (Vdefault_process_coding_system
))
3034 val
= XCDR (Vdefault_process_coding_system
);
3038 pset_encode_coding_system (p
, val
);
3040 pset_decoding_buf (p
, empty_unibyte_string
);
3041 p
->decoding_carryover
= 0;
3042 pset_encoding_buf (p
, empty_unibyte_string
);
3044 p
->inherit_coding_system_flag
3045 = !(!NILP (tem
) || NILP (p
->buffer
) || !inherit_process_coding_system
);
3050 finish_after_tls_connection (Lisp_Object proc
)
3052 struct Lisp_Process
*p
= XPROCESS (proc
);
3053 Lisp_Object contact
= p
->childp
;
3054 Lisp_Object result
= Qt
;
3056 if (!NILP (Ffboundp (Qnsm_verify_connection
)))
3057 result
= call3 (Qnsm_verify_connection
,
3059 Fplist_get (contact
, QChost
),
3060 Fplist_get (contact
, QCservice
));
3064 pset_status (p
, list2 (Qfailed
,
3065 build_string ("The Network Security Manager stopped the connections")));
3066 deactivate_process (proc
);
3070 /* If we cleared the connection wait mask before we did
3071 the TLS setup, then we have to say that the process
3072 is finally "open" here. */
3073 if (! FD_ISSET (p
->outfd
, &connect_wait_mask
))
3075 pset_status (p
, Qrun
);
3076 /* Execute the sentinel here. If we had relied on
3077 status_notify to do it later, it will read input
3078 from the process before calling the sentinel. */
3079 exec_sentinel (proc
, build_string ("open\n"));
3086 connect_network_socket (Lisp_Object proc
, Lisp_Object ip_addresses
,
3087 Lisp_Object use_external_socket_p
)
3089 ptrdiff_t count
= SPECPDL_INDEX ();
3091 int s
= -1, outch
, inch
;
3093 Lisp_Object ip_address
;
3095 struct sockaddr
*sa
= NULL
;
3098 struct Lisp_Process
*p
= XPROCESS (proc
);
3099 Lisp_Object contact
= p
->childp
;
3101 int socket_to_use
= -1;
3103 if (!NILP (use_external_socket_p
))
3105 socket_to_use
= external_sock_fd
;
3107 /* Ensure we don't consume the external socket twice. */
3108 external_sock_fd
= -1;
3111 /* Do this in case we never enter the while-loop below. */
3112 count1
= SPECPDL_INDEX ();
3115 while (!NILP (ip_addresses
))
3117 ip_address
= XCAR (ip_addresses
);
3118 ip_addresses
= XCDR (ip_addresses
);
3124 addrlen
= get_lisp_to_sockaddr_size (ip_address
, &family
);
3127 sa
= xmalloc (addrlen
);
3128 conv_lisp_to_sockaddr (family
, ip_address
, sa
, addrlen
);
3133 s
= socket (family
, p
->socktype
| SOCK_CLOEXEC
, p
->ai_protocol
);
3141 #ifdef DATAGRAM_SOCKETS
3142 if (!p
->is_server
&& p
->socktype
== SOCK_DGRAM
)
3144 #endif /* DATAGRAM_SOCKETS */
3146 if (p
->is_non_blocking_client
)
3148 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3158 /* Make us close S if quit. */
3159 record_unwind_protect_int (close_file_unwind
, s
);
3161 /* Parse network options in the arg list. We simply ignore anything
3162 which isn't a known option (including other keywords). An error
3163 is signaled if setting a known option fails. */
3165 Lisp_Object params
= contact
, key
, val
;
3167 while (!NILP (params
))
3169 key
= XCAR (params
);
3170 params
= XCDR (params
);
3171 val
= XCAR (params
);
3172 params
= XCDR (params
);
3173 optbits
|= set_socket_option (s
, key
, val
);
3179 /* Configure as a server socket. */
3181 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3182 explicit :reuseaddr key to override this. */
3183 #ifdef HAVE_LOCAL_SOCKETS
3184 if (family
!= AF_LOCAL
)
3186 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3189 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3190 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3193 /* If passed a socket descriptor, it should be already bound. */
3194 if (socket_to_use
< 0 && bind (s
, sa
, addrlen
) != 0)
3195 report_file_error ("Cannot bind server socket", Qnil
);
3197 #ifdef HAVE_GETSOCKNAME
3200 struct sockaddr_in sa1
;
3201 socklen_t len1
= sizeof (sa1
);
3202 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3204 Lisp_Object service
;
3205 service
= make_number (ntohs (sa1
.sin_port
));
3206 contact
= Fplist_put (contact
, QCservice
, service
);
3207 /* Save the port number so that we can stash it in
3208 the process object later. */
3209 ((struct sockaddr_in
*)sa
)->sin_port
= sa1
.sin_port
;
3214 if (p
->socktype
!= SOCK_DGRAM
&& listen (s
, p
->backlog
))
3215 report_file_error ("Cannot listen on server socket", Qnil
);
3223 ret
= connect (s
, sa
, addrlen
);
3226 if (ret
== 0 || xerrno
== EISCONN
)
3228 /* The unwind-protect will be discarded afterwards.
3229 Likewise for immediate_quit. */
3233 if (p
->is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3237 if (xerrno
== EINTR
)
3239 /* Unlike most other syscalls connect() cannot be called
3240 again. (That would return EALREADY.) The proper way to
3241 wait for completion is pselect(). */
3249 sc
= pselect (s
+ 1, NULL
, &fdset
, NULL
, NULL
, NULL
);
3255 report_file_error ("Failed select", Qnil
);
3259 len
= sizeof xerrno
;
3260 eassert (FD_ISSET (s
, &fdset
));
3261 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) < 0)
3262 report_file_error ("Failed getsockopt", Qnil
);
3264 report_file_errno ("Failed connect", Qnil
, xerrno
);
3267 #endif /* !WINDOWSNT */
3271 /* Discard the unwind protect closing S. */
3272 specpdl_ptr
= specpdl
+ count1
;
3277 if (xerrno
== EINTR
)
3284 #ifdef DATAGRAM_SOCKETS
3285 if (p
->socktype
== SOCK_DGRAM
)
3287 if (datagram_address
[s
].sa
)
3290 datagram_address
[s
].sa
= xmalloc (addrlen
);
3291 datagram_address
[s
].len
= addrlen
;
3295 memset (datagram_address
[s
].sa
, 0, addrlen
);
3296 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3299 ptrdiff_t rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3300 if (rlen
!= 0 && rfamily
== family
3302 conv_lisp_to_sockaddr (rfamily
, remote
,
3303 datagram_address
[s
].sa
, rlen
);
3307 memcpy (datagram_address
[s
].sa
, sa
, addrlen
);
3311 contact
= Fplist_put (contact
, p
->is_server
? QClocal
: QCremote
,
3312 conv_sockaddr_to_lisp (sa
, addrlen
));
3313 #ifdef HAVE_GETSOCKNAME
3316 struct sockaddr_in sa1
;
3317 socklen_t len1
= sizeof (sa1
);
3318 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3319 contact
= Fplist_put (contact
, QClocal
,
3320 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3329 /* If non-blocking got this far - and failed - assume non-blocking is
3330 not supported after all. This is probably a wrong assumption, but
3331 the normal blocking calls to open-network-stream handles this error
3333 if (p
->is_non_blocking_client
)
3336 report_file_errno ((p
->is_server
3337 ? "make server process failed"
3338 : "make client process failed"),
3345 chan_process
[inch
] = proc
;
3347 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3349 p
= XPROCESS (proc
);
3350 p
->open_fd
[SUBPROCESS_STDIN
] = inch
;
3354 /* Discard the unwind protect for closing S, if any. */
3355 specpdl_ptr
= specpdl
+ count1
;
3357 /* Unwind bind_polling_period and request_sigio. */
3358 unbind_to (count
, Qnil
);
3360 if (p
->is_server
&& p
->socktype
!= SOCK_DGRAM
)
3361 pset_status (p
, Qlisten
);
3363 /* Make the process marker point into the process buffer (if any). */
3364 if (BUFFERP (p
->buffer
))
3365 set_marker_both (p
->mark
, p
->buffer
,
3366 BUF_ZV (XBUFFER (p
->buffer
)),
3367 BUF_ZV_BYTE (XBUFFER (p
->buffer
)));
3369 if (p
->is_non_blocking_client
)
3371 /* We may get here if connect did succeed immediately. However,
3372 in that case, we still need to signal this like a non-blocking
3374 pset_status (p
, Qconnect
);
3375 if (!FD_ISSET (inch
, &connect_wait_mask
))
3377 FD_SET (inch
, &connect_wait_mask
);
3378 FD_SET (inch
, &write_mask
);
3379 num_pending_connects
++;
3383 /* A server may have a client filter setting of Qt, but it must
3384 still listen for incoming connects unless it is stopped. */
3385 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3386 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3388 FD_SET (inch
, &input_wait_mask
);
3389 FD_SET (inch
, &non_keyboard_wait_mask
);
3392 if (inch
> max_process_desc
)
3393 max_process_desc
= inch
;
3395 /* Set up the masks based on the process filter. */
3396 set_process_filter_masks (p
);
3398 setup_process_coding_systems (proc
);
3401 /* Continue the asynchronous connection. */
3402 if (!NILP (p
->gnutls_boot_parameters
))
3404 Lisp_Object boot
, params
= p
->gnutls_boot_parameters
;
3406 boot
= Fgnutls_boot (proc
, XCAR (params
), XCDR (params
));
3407 p
->gnutls_boot_parameters
= Qnil
;
3409 if (p
->gnutls_initstage
== GNUTLS_STAGE_READY
)
3410 /* Run sentinels, etc. */
3411 finish_after_tls_connection (proc
);
3412 else if (p
->gnutls_initstage
!= GNUTLS_STAGE_HANDSHAKE_TRIED
)
3414 deactivate_process (proc
);
3416 pset_status (p
, list2 (Qfailed
,
3417 build_string ("TLS negotiation failed")));
3419 pset_status (p
, list2 (Qfailed
, boot
));
3426 /* Create a network stream/datagram client/server process. Treated
3427 exactly like a normal process when reading and writing. Primary
3428 differences are in status display and process deletion. A network
3429 connection has no PID; you cannot signal it. All you can do is
3430 stop/continue it and deactivate/close it via delete-process. */
3432 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3434 doc
: /* Create and return a network server or client process.
3436 In Emacs, network connections are represented by process objects, so
3437 input and output work as for subprocesses and `delete-process' closes
3438 a network connection. However, a network process has no process id,
3439 it cannot be signaled, and the status codes are different from normal
3442 Arguments are specified as keyword/argument pairs. The following
3443 arguments are defined:
3445 :name NAME -- NAME is name for process. It is modified if necessary
3448 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3449 with the process. Process output goes at end of that buffer, unless
3450 you specify an output stream or filter function to handle the output.
3451 BUFFER may be also nil, meaning that this process is not associated
3454 :host HOST -- HOST is name of the host to connect to, or its IP
3455 address. The symbol `local' specifies the local host. If specified
3456 for a server process, it must be a valid name or address for the local
3457 host, and only clients connecting to that address will be accepted.
3459 :service SERVICE -- SERVICE is name of the service desired, or an
3460 integer specifying a port number to connect to. If SERVICE is t,
3461 a random port number is selected for the server. A port number can
3462 be specified as an integer string, e.g., "80", as well as an integer.
3464 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3465 stream type connection, `datagram' creates a datagram type connection,
3466 `seqpacket' creates a reliable datagram connection.
3468 :family FAMILY -- FAMILY is the address (and protocol) family for the
3469 service specified by HOST and SERVICE. The default (nil) is to use
3470 whatever address family (IPv4 or IPv6) that is defined for the host
3471 and port number specified by HOST and SERVICE. Other address families
3473 local -- for a local (i.e. UNIX) address specified by SERVICE.
3474 ipv4 -- use IPv4 address family only.
3475 ipv6 -- use IPv6 address family only.
3477 :local ADDRESS -- ADDRESS is the local address used for the connection.
3478 This parameter is ignored when opening a client process. When specified
3479 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3481 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3482 connection. This parameter is ignored when opening a stream server
3483 process. For a datagram server process, it specifies the initial
3484 setting of the remote datagram address. When specified for a client
3485 process, the FAMILY, HOST, and SERVICE args are ignored.
3487 The format of ADDRESS depends on the address family:
3488 - An IPv4 address is represented as an vector of integers [A B C D P]
3489 corresponding to numeric IP address A.B.C.D and port number P.
3490 - A local address is represented as a string with the address in the
3491 local address space.
3492 - An "unsupported family" address is represented by a cons (F . AV)
3493 where F is the family number and AV is a vector containing the socket
3494 address data with one element per address data byte. Do not rely on
3495 this format in portable code, as it may depend on implementation
3496 defined constants, data sizes, and data structure alignment.
3498 :coding CODING -- If CODING is a symbol, it specifies the coding
3499 system used for both reading and writing for this process. If CODING
3500 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3501 ENCODING is used for writing.
3503 :nowait BOOL -- If NOWAIT is non-nil for a stream type client
3504 process, return without waiting for the connection to complete;
3505 instead, the sentinel function will be called with second arg matching
3506 "open" (if successful) or "failed" when the connect completes.
3507 Default is to use a blocking connect (i.e. wait) for stream type
3510 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3511 running when Emacs is exited.
3513 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3514 In the stopped state, a server process does not accept new
3515 connections, and a client process does not handle incoming traffic.
3516 The stopped state is cleared by `continue-process' and set by
3519 :filter FILTER -- Install FILTER as the process filter.
3521 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3522 process filter are multibyte, otherwise they are unibyte.
3523 If this keyword is not specified, the strings are multibyte if
3524 the default value of `enable-multibyte-characters' is non-nil.
3526 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3528 :log LOG -- Install LOG as the server process log function. This
3529 function is called when the server accepts a network connection from a
3530 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3531 is the server process, CLIENT is the new process for the connection,
3532 and MESSAGE is a string.
3534 :plist PLIST -- Install PLIST as the new process's initial plist.
3536 :tls-parameters LIST -- is a list that should be supplied if you're
3537 opening a TLS connection. The first element is the TLS type (either
3538 `gnutls-x509pki' or `gnutls-anon'), and the remaining elements should
3539 be a keyword list accepted by gnutls-boot (as returned by
3540 `gnutls-boot-parameters').
3542 :server QLEN -- if QLEN is non-nil, create a server process for the
3543 specified FAMILY, SERVICE, and connection type (stream or datagram).
3544 If QLEN is an integer, it is used as the max. length of the server's
3545 pending connection queue (also known as the backlog); the default
3546 queue length is 5. Default is to create a client process.
3548 The following network options can be specified for this connection:
3550 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3551 :dontroute BOOL -- Only send to directly connected hosts.
3552 :keepalive BOOL -- Send keep-alive messages on network stream.
3553 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3554 :oobinline BOOL -- Place out-of-band data in receive data stream.
3555 :priority INT -- Set protocol defined priority for sent packets.
3556 :reuseaddr BOOL -- Allow reusing a recently used local address
3557 (this is allowed by default for a server process).
3558 :bindtodevice NAME -- bind to interface NAME. Using this may require
3559 special privileges on some systems.
3560 :use-external-socket BOOL -- Use any pre-allocated sockets that have
3561 been passed to Emacs. If Emacs wasn't
3562 passed a socket, this option is silently
3566 Consult the relevant system programmer's manual pages for more
3567 information on using these options.
3570 A server process will listen for and accept connections from clients.
3571 When a client connection is accepted, a new network process is created
3572 for the connection with the following parameters:
3574 - The client's process name is constructed by concatenating the server
3575 process's NAME and a client identification string.
3576 - If the FILTER argument is non-nil, the client process will not get a
3577 separate process buffer; otherwise, the client's process buffer is a newly
3578 created buffer named after the server process's BUFFER name or process
3579 NAME concatenated with the client identification string.
3580 - The connection type and the process filter and sentinel parameters are
3581 inherited from the server process's TYPE, FILTER and SENTINEL.
3582 - The client process's contact info is set according to the client's
3583 addressing information (typically an IP address and a port number).
3584 - The client process's plist is initialized from the server's plist.
3586 Notice that the FILTER and SENTINEL args are never used directly by
3587 the server process. Also, the BUFFER argument is not used directly by
3588 the server process, but via the optional :log function, accepted (and
3589 failed) connections may be logged in the server process's buffer.
3591 The original argument list, modified with the actual connection
3592 information, is available via the `process-contact' function.
3594 usage: (make-network-process &rest ARGS) */)
3595 (ptrdiff_t nargs
, Lisp_Object
*args
)
3598 Lisp_Object contact
;
3599 struct Lisp_Process
*p
;
3600 const char *portstring
;
3601 ptrdiff_t portstringlen ATTRIBUTE_UNUSED
;
3602 char portbuf
[INT_BUFSIZE_BOUND (EMACS_INT
)];
3603 #ifdef HAVE_LOCAL_SOCKETS
3604 struct sockaddr_un address_un
;
3608 Lisp_Object name
, buffer
, host
, service
, address
;
3609 Lisp_Object filter
, sentinel
, use_external_socket_p
;
3610 Lisp_Object ip_addresses
= Qnil
;
3613 int ai_protocol
= 0;
3614 #ifdef HAVE_GETADDRINFO_A
3615 struct gaicb
*dns_request
= NULL
;
3617 ptrdiff_t count
= SPECPDL_INDEX ();
3622 /* Save arguments for process-contact and clone-process. */
3623 contact
= Flist (nargs
, args
);
3626 /* Ensure socket support is loaded if available. */
3627 init_winsock (TRUE
);
3630 /* :type TYPE (nil: stream, datagram */
3631 tem
= Fplist_get (contact
, QCtype
);
3633 socktype
= SOCK_STREAM
;
3634 #ifdef DATAGRAM_SOCKETS
3635 else if (EQ (tem
, Qdatagram
))
3636 socktype
= SOCK_DGRAM
;
3638 #ifdef HAVE_SEQPACKET
3639 else if (EQ (tem
, Qseqpacket
))
3640 socktype
= SOCK_SEQPACKET
;
3643 error ("Unsupported connection type");
3645 name
= Fplist_get (contact
, QCname
);
3646 buffer
= Fplist_get (contact
, QCbuffer
);
3647 filter
= Fplist_get (contact
, QCfilter
);
3648 sentinel
= Fplist_get (contact
, QCsentinel
);
3649 use_external_socket_p
= Fplist_get (contact
, QCuse_external_socket
);
3651 CHECK_STRING (name
);
3653 /* :local ADDRESS or :remote ADDRESS */
3654 tem
= Fplist_get (contact
, QCserver
);
3656 address
= Fplist_get (contact
, QCremote
);
3658 address
= Fplist_get (contact
, QClocal
);
3659 if (!NILP (address
))
3661 host
= service
= Qnil
;
3663 if (!get_lisp_to_sockaddr_size (address
, &family
))
3664 error ("Malformed :address");
3666 ip_addresses
= list1 (address
);
3670 /* :family FAMILY -- nil (for Inet), local, or integer. */
3671 tem
= Fplist_get (contact
, QCfamily
);
3680 #ifdef HAVE_LOCAL_SOCKETS
3681 else if (EQ (tem
, Qlocal
))
3685 else if (EQ (tem
, Qipv6
))
3688 else if (EQ (tem
, Qipv4
))
3690 else if (TYPE_RANGED_INTEGERP (int, tem
))
3691 family
= XINT (tem
);
3693 error ("Unknown address family");
3695 /* :service SERVICE -- string, integer (port number), or t (random port). */
3696 service
= Fplist_get (contact
, QCservice
);
3698 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3699 host
= Fplist_get (contact
, QChost
);
3702 /* The "connection" function gets it bind info from the address we're
3703 given, so use this dummy address if nothing is specified. */
3704 #ifdef HAVE_LOCAL_SOCKETS
3705 if (family
!= AF_LOCAL
)
3707 host
= build_string ("127.0.0.1");
3711 if (EQ (host
, Qlocal
))
3712 /* Depending on setup, "localhost" may map to different IPv4 and/or
3713 IPv6 addresses, so it's better to be explicit (Bug#6781). */
3714 host
= build_string ("127.0.0.1");
3715 CHECK_STRING (host
);
3718 #ifdef HAVE_LOCAL_SOCKETS
3719 if (family
== AF_LOCAL
)
3723 message (":family local ignores the :host property");
3724 contact
= Fplist_put (contact
, QChost
, Qnil
);
3727 CHECK_STRING (service
);
3728 if (sizeof address_un
.sun_path
<= SBYTES (service
))
3729 error ("Service name too long");
3730 ip_addresses
= list1 (service
);
3735 /* Slow down polling to every ten seconds.
3736 Some kernels have a bug which causes retrying connect to fail
3737 after a connect. Polling can interfere with gethostbyname too. */
3738 #ifdef POLL_FOR_INPUT
3739 if (socktype
!= SOCK_DGRAM
)
3741 record_unwind_protect_void (run_all_atimers
);
3742 bind_polling_period (10);
3748 /* SERVICE can either be a string or int.
3749 Convert to a C string for later use by getaddrinfo. */
3750 if (EQ (service
, Qt
))
3755 else if (INTEGERP (service
))
3757 portstring
= portbuf
;
3758 portstringlen
= sprintf (portbuf
, "%"pI
"d", XINT (service
));
3762 CHECK_STRING (service
);
3763 portstring
= SSDATA (service
);
3764 portstringlen
= SBYTES (service
);
3768 #ifdef HAVE_GETADDRINFO_A
3769 if (!NILP (host
) && !NILP (Fplist_get (contact
, QCnowait
)))
3771 ptrdiff_t hostlen
= SBYTES (host
);
3775 struct addrinfo hints
;
3776 char str
[FLEXIBLE_ARRAY_MEMBER
];
3777 } *req
= xmalloc (offsetof (struct req
, str
)
3778 + hostlen
+ 1 + portstringlen
+ 1);
3779 dns_request
= &req
->gaicb
;
3780 dns_request
->ar_name
= req
->str
;
3781 dns_request
->ar_service
= req
->str
+ hostlen
+ 1;
3782 dns_request
->ar_request
= &req
->hints
;
3783 dns_request
->ar_result
= NULL
;
3784 memset (&req
->hints
, 0, sizeof req
->hints
);
3785 req
->hints
.ai_family
= family
;
3786 req
->hints
.ai_socktype
= socktype
;
3787 strcpy (req
->str
, SSDATA (host
));
3788 strcpy (req
->str
+ hostlen
+ 1, portstring
);
3790 int ret
= getaddrinfo_a (GAI_NOWAIT
, &dns_request
, 1, NULL
);
3792 error ("%s/%s getaddrinfo_a error %d", SSDATA (host
), portstring
, ret
);
3796 #endif /* HAVE_GETADDRINFO_A */
3798 /* If we have a host, use getaddrinfo to resolve both host and service.
3799 Otherwise, use getservbyname to lookup the service. */
3803 struct addrinfo
*res
, *lres
;
3809 struct addrinfo hints
;
3810 memset (&hints
, 0, sizeof hints
);
3811 hints
.ai_family
= family
;
3812 hints
.ai_socktype
= socktype
;
3814 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3816 #ifdef HAVE_GAI_STRERROR
3818 synchronize_system_messages_locale ();
3819 char const *str
= gai_strerror (ret
);
3820 if (! NILP (Vlocale_coding_system
))
3821 str
= SSDATA (code_convert_string_norecord
3822 (build_string (str
), Vlocale_coding_system
, 0));
3823 error ("%s/%s %s", SSDATA (host
), portstring
, str
);
3826 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3830 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3832 ip_addresses
= Fcons (conv_sockaddr_to_lisp
3833 (lres
->ai_addr
, lres
->ai_addrlen
),
3835 ai_protocol
= lres
->ai_protocol
;
3838 ip_addresses
= Fnreverse (ip_addresses
);
3845 /* No hostname has been specified (e.g., a local server process). */
3847 if (EQ (service
, Qt
))
3849 else if (INTEGERP (service
))
3850 port
= XINT (service
);
3853 CHECK_STRING (service
);
3856 if (SBYTES (service
) != 0)
3858 /* Allow the service to be a string containing the port number,
3859 because that's allowed if you have getaddrbyname. */
3861 long int lport
= strtol (SSDATA (service
), &service_end
, 10);
3862 if (service_end
== SSDATA (service
) + SBYTES (service
))
3866 struct servent
*svc_info
3867 = getservbyname (SSDATA (service
),
3868 socktype
== SOCK_DGRAM
? "udp" : "tcp");
3870 port
= ntohs (svc_info
->s_port
);
3875 if (! (0 <= port
&& port
< 1 << 16))
3877 AUTO_STRING (unknown_service
, "Unknown service: %s");
3878 xsignal1 (Qerror
, CALLN (Fformat
, unknown_service
, service
));
3884 buffer
= Fget_buffer_create (buffer
);
3885 proc
= make_process (name
);
3886 p
= XPROCESS (proc
);
3887 pset_childp (p
, contact
);
3888 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
3889 pset_type (p
, Qnetwork
);
3891 pset_buffer (p
, buffer
);
3892 pset_sentinel (p
, sentinel
);
3893 pset_filter (p
, filter
);
3894 pset_log (p
, Fplist_get (contact
, QClog
));
3895 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3896 p
->kill_without_query
= 1;
3897 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3898 pset_command (p
, Qt
);
3901 p
->is_non_blocking_client
= false;
3902 p
->is_server
= false;
3904 p
->socktype
= socktype
;
3905 p
->ai_protocol
= ai_protocol
;
3906 #ifdef HAVE_GETADDRINFO_A
3907 p
->dns_request
= NULL
;
3910 tem
= Fplist_get (contact
, QCtls_parameters
);
3912 p
->gnutls_boot_parameters
= tem
;
3915 set_network_socket_coding_system (proc
, host
, service
, name
);
3917 unbind_to (count
, Qnil
);
3920 tem
= Fplist_get (contact
, QCserver
);
3923 /* Don't support network sockets when non-blocking mode is
3924 not available, since a blocked Emacs is not useful. */
3925 p
->is_server
= true;
3926 if (TYPE_RANGED_INTEGERP (int, tem
))
3927 p
->backlog
= XINT (tem
);
3931 if (!p
->is_server
&& socktype
!= SOCK_DGRAM
3932 && !NILP (Fplist_get (contact
, QCnowait
)))
3933 p
->is_non_blocking_client
= true;
3935 #ifdef HAVE_GETADDRINFO_A
3936 /* With async address resolution, the list of addresses is empty, so
3937 postpone connecting to the server. */
3938 if (!p
->is_server
&& NILP (ip_addresses
))
3940 p
->dns_request
= dns_request
;
3941 p
->status
= Qconnect
;
3946 connect_network_socket (proc
, ip_addresses
, use_external_socket_p
);
3951 #ifdef HAVE_NET_IF_H
3955 network_interface_list (void)
3957 struct ifconf ifconf
;
3958 struct ifreq
*ifreq
;
3960 ptrdiff_t buf_size
= 512;
3965 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3968 count
= SPECPDL_INDEX ();
3969 record_unwind_protect_int (close_file_unwind
, s
);
3973 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
3974 ifconf
.ifc_buf
= buf
;
3975 ifconf
.ifc_len
= buf_size
;
3976 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3983 while (ifconf
.ifc_len
== buf_size
);
3985 res
= unbind_to (count
, Qnil
);
3986 ifreq
= ifconf
.ifc_req
;
3987 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
3989 struct ifreq
*ifq
= ifreq
;
3990 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3991 #define SIZEOF_IFREQ(sif) \
3992 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
3993 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
3995 int len
= SIZEOF_IFREQ (ifq
);
3997 int len
= sizeof (*ifreq
);
3999 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
4000 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
4002 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
4005 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
4006 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
4007 res
= Fcons (Fcons (build_string (namebuf
),
4008 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
4009 sizeof (struct sockaddr
))),
4016 #endif /* SIOCGIFCONF */
4018 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
4022 const char *flag_sym
;
4025 static const struct ifflag_def ifflag_table
[] = {
4029 #ifdef IFF_BROADCAST
4030 { IFF_BROADCAST
, "broadcast" },
4033 { IFF_DEBUG
, "debug" },
4036 { IFF_LOOPBACK
, "loopback" },
4038 #ifdef IFF_POINTOPOINT
4039 { IFF_POINTOPOINT
, "pointopoint" },
4042 { IFF_RUNNING
, "running" },
4045 { IFF_NOARP
, "noarp" },
4048 { IFF_PROMISC
, "promisc" },
4050 #ifdef IFF_NOTRAILERS
4051 #ifdef NS_IMPL_COCOA
4052 /* Really means smart, notrailers is obsolete. */
4053 { IFF_NOTRAILERS
, "smart" },
4055 { IFF_NOTRAILERS
, "notrailers" },
4059 { IFF_ALLMULTI
, "allmulti" },
4062 { IFF_MASTER
, "master" },
4065 { IFF_SLAVE
, "slave" },
4067 #ifdef IFF_MULTICAST
4068 { IFF_MULTICAST
, "multicast" },
4071 { IFF_PORTSEL
, "portsel" },
4073 #ifdef IFF_AUTOMEDIA
4074 { IFF_AUTOMEDIA
, "automedia" },
4077 { IFF_DYNAMIC
, "dynamic" },
4080 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress. */
4083 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions. */
4086 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit. */
4089 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit. */
4092 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit. */
4098 network_interface_info (Lisp_Object ifname
)
4101 Lisp_Object res
= Qnil
;
4106 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
4107 && defined HAVE_GETIFADDRS && defined LLADDR)
4108 struct ifaddrs
*ifap
;
4111 CHECK_STRING (ifname
);
4113 if (sizeof rq
.ifr_name
<= SBYTES (ifname
))
4114 error ("interface name too long");
4115 lispstpcpy (rq
.ifr_name
, ifname
);
4117 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
4120 count
= SPECPDL_INDEX ();
4121 record_unwind_protect_int (close_file_unwind
, s
);
4124 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
4125 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4127 int flags
= rq
.ifr_flags
;
4128 const struct ifflag_def
*fp
;
4131 /* If flags is smaller than int (i.e. short) it may have the high bit set
4132 due to IFF_MULTICAST. In that case, sign extending it into
4134 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
4135 flags
= (unsigned short) rq
.ifr_flags
;
4138 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4140 if (flags
& fp
->flag_bit
)
4142 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4143 flags
-= fp
->flag_bit
;
4146 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
4150 elt
= Fcons (make_number (fnum
), elt
);
4155 res
= Fcons (elt
, res
);
4158 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
4159 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4161 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4162 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4166 for (n
= 0; n
< 6; n
++)
4167 p
->contents
[n
] = make_number (((unsigned char *)
4168 &rq
.ifr_hwaddr
.sa_data
[0])
4170 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4172 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
4173 if (getifaddrs (&ifap
) != -1)
4175 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4176 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4179 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
4181 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
4182 unsigned char linkaddr
[6];
4185 if (it
->ifa_addr
->sa_family
!= AF_LINK
4186 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
4187 || sdl
->sdl_alen
!= 6)
4190 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
4191 for (n
= 0; n
< 6; n
++)
4192 p
->contents
[n
] = make_number (linkaddr
[n
]);
4194 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
4198 #ifdef HAVE_FREEIFADDRS
4202 #endif /* HAVE_GETIFADDRS && LLADDR */
4204 res
= Fcons (elt
, res
);
4207 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
4208 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4211 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4212 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4214 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4218 res
= Fcons (elt
, res
);
4221 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4222 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4225 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4228 res
= Fcons (elt
, res
);
4231 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
4232 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4235 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4238 res
= Fcons (elt
, res
);
4240 return unbind_to (count
, any
? res
: Qnil
);
4242 #endif /* !SIOCGIFADDR && !SIOCGIFHWADDR && !SIOCGIFFLAGS */
4243 #endif /* defined (HAVE_NET_IF_H) */
4245 DEFUN ("network-interface-list", Fnetwork_interface_list
,
4246 Snetwork_interface_list
, 0, 0, 0,
4247 doc
: /* Return an alist of all network interfaces and their network address.
4248 Each element is a cons, the car of which is a string containing the
4249 interface name, and the cdr is the network address in internal
4250 format; see the description of ADDRESS in `make-network-process'.
4252 If the information is not available, return nil. */)
4255 #if (defined HAVE_NET_IF_H && defined SIOCGIFCONF) || defined WINDOWSNT
4256 return network_interface_list ();
4262 DEFUN ("network-interface-info", Fnetwork_interface_info
,
4263 Snetwork_interface_info
, 1, 1, 0,
4264 doc
: /* Return information about network interface named IFNAME.
4265 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4266 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4267 NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
4268 FLAGS is the current flags of the interface.
4270 Data that is unavailable is returned as nil. */)
4271 (Lisp_Object ifname
)
4273 #if ((defined HAVE_NET_IF_H \
4274 && (defined SIOCGIFADDR || defined SIOCGIFHWADDR \
4275 || defined SIOCGIFFLAGS)) \
4276 || defined WINDOWSNT)
4277 return network_interface_info (ifname
);
4283 /* Turn off input and output for process PROC. */
4286 deactivate_process (Lisp_Object proc
)
4289 struct Lisp_Process
*p
= XPROCESS (proc
);
4293 /* Delete GnuTLS structures in PROC, if any. */
4294 emacs_gnutls_deinit (proc
);
4295 #endif /* HAVE_GNUTLS */
4297 if (p
->read_output_delay
> 0)
4299 if (--process_output_delay_count
< 0)
4300 process_output_delay_count
= 0;
4301 p
->read_output_delay
= 0;
4302 p
->read_output_skip
= 0;
4305 /* Beware SIGCHLD hereabouts. */
4307 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
4308 close_process_fd (&p
->open_fd
[i
]);
4310 inchannel
= p
->infd
;
4315 #ifdef DATAGRAM_SOCKETS
4316 if (DATAGRAM_CHAN_P (inchannel
))
4318 xfree (datagram_address
[inchannel
].sa
);
4319 datagram_address
[inchannel
].sa
= 0;
4320 datagram_address
[inchannel
].len
= 0;
4323 chan_process
[inchannel
] = Qnil
;
4324 FD_CLR (inchannel
, &input_wait_mask
);
4325 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4326 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4328 FD_CLR (inchannel
, &connect_wait_mask
);
4329 FD_CLR (inchannel
, &write_mask
);
4330 if (--num_pending_connects
< 0)
4333 if (inchannel
== max_process_desc
)
4335 /* We just closed the highest-numbered process input descriptor,
4336 so recompute the highest-numbered one now. */
4340 while (0 <= i
&& NILP (chan_process
[i
]));
4342 max_process_desc
= i
;
4348 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4350 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4351 It is given to their filter functions.
4352 Optional argument PROCESS means do not return until output has been
4353 received from PROCESS.
4355 Optional second argument SECONDS and third argument MILLISEC
4356 specify a timeout; return after that much time even if there is
4357 no subprocess output. If SECONDS is a floating point number,
4358 it specifies a fractional number of seconds to wait.
4359 The MILLISEC argument is obsolete and should be avoided.
4361 If optional fourth argument JUST-THIS-ONE is non-nil, accept output
4362 from PROCESS only, suspending reading output from other processes.
4363 If JUST-THIS-ONE is an integer, don't run any timers either.
4364 Return non-nil if we received any output from PROCESS (or, if PROCESS
4365 is nil, from any process) before the timeout expired. */)
4366 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
4371 if (! NILP (process
))
4372 CHECK_PROCESS (process
);
4374 just_this_one
= Qnil
;
4376 if (!NILP (millisec
))
4377 { /* Obsolete calling convention using integers rather than floats. */
4378 CHECK_NUMBER (millisec
);
4380 seconds
= make_float (XINT (millisec
) / 1000.0);
4383 CHECK_NUMBER (seconds
);
4384 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4391 if (!NILP (seconds
))
4393 if (INTEGERP (seconds
))
4395 if (XINT (seconds
) > 0)
4397 secs
= XINT (seconds
);
4401 else if (FLOATP (seconds
))
4403 if (XFLOAT_DATA (seconds
) > 0)
4405 struct timespec t
= dtotimespec (XFLOAT_DATA (seconds
));
4406 secs
= min (t
.tv_sec
, WAIT_READING_MAX
);
4411 wrong_type_argument (Qnumberp
, seconds
);
4413 else if (! NILP (process
))
4417 ((wait_reading_process_output (secs
, nsecs
, 0, 0,
4419 !NILP (process
) ? XPROCESS (process
) : NULL
,
4420 (NILP (just_this_one
) ? 0
4421 : !INTEGERP (just_this_one
) ? 1 : -1))
4426 /* Accept a connection for server process SERVER on CHANNEL. */
4428 static EMACS_INT connect_counter
= 0;
4431 server_accept_connection (Lisp_Object server
, int channel
)
4433 Lisp_Object proc
, caller
, name
, buffer
;
4434 Lisp_Object contact
, host
, service
;
4435 struct Lisp_Process
*ps
= XPROCESS (server
);
4436 struct Lisp_Process
*p
;
4440 struct sockaddr_in in
;
4442 struct sockaddr_in6 in6
;
4444 #ifdef HAVE_LOCAL_SOCKETS
4445 struct sockaddr_un un
;
4448 socklen_t len
= sizeof saddr
;
4451 s
= accept4 (channel
, &saddr
.sa
, &len
, SOCK_CLOEXEC
);
4460 if (code
== EWOULDBLOCK
)
4464 if (!NILP (ps
->log
))
4465 call3 (ps
->log
, server
, Qnil
,
4466 concat3 (build_string ("accept failed with code"),
4467 Fnumber_to_string (make_number (code
)),
4468 build_string ("\n")));
4472 count
= SPECPDL_INDEX ();
4473 record_unwind_protect_int (close_file_unwind
, s
);
4477 /* Setup a new process to handle the connection. */
4479 /* Generate a unique identification of the caller, and build contact
4480 information for this process. */
4483 switch (saddr
.sa
.sa_family
)
4487 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4489 AUTO_STRING (ipv4_format
, "%d.%d.%d.%d");
4490 host
= CALLN (Fformat
, ipv4_format
,
4491 make_number (ip
[0]), make_number (ip
[1]),
4492 make_number (ip
[2]), make_number (ip
[3]));
4493 service
= make_number (ntohs (saddr
.in
.sin_port
));
4494 AUTO_STRING (caller_format
, " <%s:%d>");
4495 caller
= CALLN (Fformat
, caller_format
, host
, service
);
4502 Lisp_Object args
[9];
4503 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4506 AUTO_STRING (ipv6_format
, "%x:%x:%x:%x:%x:%x:%x:%x");
4507 args
[0] = ipv6_format
;
4508 for (i
= 0; i
< 8; i
++)
4509 args
[i
+ 1] = make_number (ntohs (ip6
[i
]));
4510 host
= CALLMANY (Fformat
, args
);
4511 service
= make_number (ntohs (saddr
.in
.sin_port
));
4512 AUTO_STRING (caller_format
, " <[%s]:%d>");
4513 caller
= CALLN (Fformat
, caller_format
, host
, service
);
4518 #ifdef HAVE_LOCAL_SOCKETS
4522 caller
= Fnumber_to_string (make_number (connect_counter
));
4523 AUTO_STRING (space_less_than
, " <");
4524 AUTO_STRING (greater_than
, ">");
4525 caller
= concat3 (space_less_than
, caller
, greater_than
);
4529 /* Create a new buffer name for this process if it doesn't have a
4530 filter. The new buffer name is based on the buffer name or
4531 process name of the server process concatenated with the caller
4534 if (!(EQ (ps
->filter
, Qinternal_default_process_filter
)
4535 || EQ (ps
->filter
, Qt
)))
4539 buffer
= ps
->buffer
;
4541 buffer
= Fbuffer_name (buffer
);
4546 buffer
= concat2 (buffer
, caller
);
4547 buffer
= Fget_buffer_create (buffer
);
4551 /* Generate a unique name for the new server process. Combine the
4552 server process name with the caller identification. */
4554 name
= concat2 (ps
->name
, caller
);
4555 proc
= make_process (name
);
4557 chan_process
[s
] = proc
;
4559 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4561 p
= XPROCESS (proc
);
4563 /* Build new contact information for this setup. */
4564 contact
= Fcopy_sequence (ps
->childp
);
4565 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4566 contact
= Fplist_put (contact
, QChost
, host
);
4567 if (!NILP (service
))
4568 contact
= Fplist_put (contact
, QCservice
, service
);
4569 contact
= Fplist_put (contact
, QCremote
,
4570 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4571 #ifdef HAVE_GETSOCKNAME
4573 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4574 contact
= Fplist_put (contact
, QClocal
,
4575 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4578 pset_childp (p
, contact
);
4579 pset_plist (p
, Fcopy_sequence (ps
->plist
));
4580 pset_type (p
, Qnetwork
);
4582 pset_buffer (p
, buffer
);
4583 pset_sentinel (p
, ps
->sentinel
);
4584 pset_filter (p
, ps
->filter
);
4585 pset_command (p
, Qnil
);
4588 /* Discard the unwind protect for closing S. */
4589 specpdl_ptr
= specpdl
+ count
;
4591 p
->open_fd
[SUBPROCESS_STDIN
] = s
;
4594 pset_status (p
, Qrun
);
4596 /* Client processes for accepted connections are not stopped initially. */
4597 if (!EQ (p
->filter
, Qt
))
4599 FD_SET (s
, &input_wait_mask
);
4600 FD_SET (s
, &non_keyboard_wait_mask
);
4603 if (s
> max_process_desc
)
4604 max_process_desc
= s
;
4606 /* Setup coding system for new process based on server process.
4607 This seems to be the proper thing to do, as the coding system
4608 of the new process should reflect the settings at the time the
4609 server socket was opened; not the current settings. */
4611 pset_decode_coding_system (p
, ps
->decode_coding_system
);
4612 pset_encode_coding_system (p
, ps
->encode_coding_system
);
4613 setup_process_coding_systems (proc
);
4615 pset_decoding_buf (p
, empty_unibyte_string
);
4616 p
->decoding_carryover
= 0;
4617 pset_encoding_buf (p
, empty_unibyte_string
);
4619 p
->inherit_coding_system_flag
4620 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4622 AUTO_STRING (dash
, "-");
4623 AUTO_STRING (nl
, "\n");
4624 Lisp_Object host_string
= STRINGP (host
) ? host
: dash
;
4626 if (!NILP (ps
->log
))
4628 AUTO_STRING (accept_from
, "accept from ");
4629 call3 (ps
->log
, server
, proc
, concat3 (accept_from
, host_string
, nl
));
4632 AUTO_STRING (open_from
, "open from ");
4633 exec_sentinel (proc
, concat3 (open_from
, host_string
, nl
));
4636 #ifdef HAVE_GETADDRINFO_A
4638 check_for_dns (Lisp_Object proc
)
4640 struct Lisp_Process
*p
= XPROCESS (proc
);
4641 Lisp_Object ip_addresses
= Qnil
;
4644 if (! p
->dns_request
)
4647 int ret
= gai_error (p
->dns_request
);
4648 if (ret
== EAI_INPROGRESS
)
4651 /* We got a response. */
4654 struct addrinfo
*res
;
4656 for (res
= p
->dns_request
->ar_result
; res
; res
= res
->ai_next
)
4658 ip_addresses
= Fcons (conv_sockaddr_to_lisp
4659 (res
->ai_addr
, res
->ai_addrlen
),
4663 ip_addresses
= Fnreverse (ip_addresses
);
4665 /* The DNS lookup failed. */
4666 else if (EQ (p
->status
, Qconnect
))
4668 deactivate_process (proc
);
4669 pset_status (p
, (list2
4671 concat3 (build_string ("Name lookup of "),
4672 build_string (p
->dns_request
->ar_name
),
4673 build_string (" failed")))));
4676 free_dns_request (proc
);
4678 /* This process should not already be connected (or killed). */
4679 if (!EQ (p
->status
, Qconnect
))
4682 return ip_addresses
;
4685 #endif /* HAVE_GETADDRINFO_A */
4688 wait_for_socket_fds (Lisp_Object process
, char const *name
)
4690 while (XPROCESS (process
)->infd
< 0
4691 && EQ (XPROCESS (process
)->status
, Qconnect
))
4693 add_to_log ("Waiting for socket from %s...", build_string (name
));
4694 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4699 wait_while_connecting (Lisp_Object process
)
4701 while (EQ (XPROCESS (process
)->status
, Qconnect
))
4703 add_to_log ("Waiting for connection...");
4704 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4709 wait_for_tls_negotiation (Lisp_Object process
)
4712 while (XPROCESS (process
)->gnutls_p
4713 && XPROCESS (process
)->gnutls_initstage
!= GNUTLS_STAGE_READY
)
4715 add_to_log ("Waiting for TLS...");
4716 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4721 /* This variable is different from waiting_for_input in keyboard.c.
4722 It is used to communicate to a lisp process-filter/sentinel (via the
4723 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4724 for user-input when that process-filter was called.
4725 waiting_for_input cannot be used as that is by definition 0 when
4726 lisp code is being evalled.
4727 This is also used in record_asynch_buffer_change.
4728 For that purpose, this must be 0
4729 when not inside wait_reading_process_output. */
4730 static int waiting_for_user_input_p
;
4733 wait_reading_process_output_unwind (int data
)
4735 waiting_for_user_input_p
= data
;
4738 /* This is here so breakpoints can be put on it. */
4740 wait_reading_process_output_1 (void)
4744 /* Read and dispose of subprocess output while waiting for timeout to
4745 elapse and/or keyboard input to be available.
4749 If negative, gobble data immediately available but don't wait for any.
4752 an additional duration to wait, measured in nanoseconds
4753 If TIME_LIMIT is zero, then:
4754 If NSECS == 0, there is no limit.
4755 If NSECS > 0, the timeout consists of NSECS only.
4756 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
4759 0 to ignore keyboard input, or
4760 1 to return when input is available, or
4761 -1 meaning caller will actually read the input, so don't throw to
4762 the quit handler, or
4764 DO_DISPLAY means redisplay should be done to show subprocess
4765 output that arrives.
4767 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4768 (and gobble terminal input into the buffer if any arrives).
4770 If WAIT_PROC is specified, wait until something arrives from that
4773 If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC
4774 (suspending output from other processes). A negative value
4775 means don't run any timers either.
4777 Return positive if we received input from WAIT_PROC (or from any
4778 process if WAIT_PROC is null), zero if we attempted to receive
4779 input but got none, and negative if we didn't even try. */
4782 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
4784 Lisp_Object wait_for_cell
,
4785 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4795 struct timespec timeout
, end_time
, timer_delay
;
4796 struct timespec got_output_end_time
= invalid_timespec ();
4797 enum { MINIMUM
= -1, TIMEOUT
, INFINITY
} wait
;
4798 int got_some_output
= -1;
4799 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
4800 bool retry_for_async
;
4802 ptrdiff_t count
= SPECPDL_INDEX ();
4804 /* Close to the current time if known, an invalid timespec otherwise. */
4805 struct timespec now
= invalid_timespec ();
4807 FD_ZERO (&Available
);
4810 if (time_limit
== 0 && nsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4811 && !(CONSP (wait_proc
->status
)
4812 && EQ (XCAR (wait_proc
->status
), Qexit
)))
4813 message1 ("Blocking call to accept-process-output with quit inhibited!!");
4815 record_unwind_protect_int (wait_reading_process_output_unwind
,
4816 waiting_for_user_input_p
);
4817 waiting_for_user_input_p
= read_kbd
;
4819 if (TYPE_MAXIMUM (time_t) < time_limit
)
4820 time_limit
= TYPE_MAXIMUM (time_t);
4822 if (time_limit
< 0 || nsecs
< 0)
4824 else if (time_limit
> 0 || nsecs
> 0)
4827 now
= current_timespec ();
4828 end_time
= timespec_add (now
, make_timespec (time_limit
, nsecs
));
4835 bool process_skipped
= false;
4837 /* If calling from keyboard input, do not quit
4838 since we want to return C-g as an input character.
4839 Otherwise, do pending quit if requested. */
4842 else if (pending_signals
)
4843 process_pending_signals ();
4845 /* Exit now if the cell we're waiting for became non-nil. */
4846 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4849 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
4851 Lisp_Object process_list_head
, aproc
;
4852 struct Lisp_Process
*p
;
4854 retry_for_async
= false;
4855 FOR_EACH_PROCESS(process_list_head
, aproc
)
4857 p
= XPROCESS (aproc
);
4859 if (! wait_proc
|| p
== wait_proc
)
4861 #ifdef HAVE_GETADDRINFO_A
4862 /* Check for pending DNS requests. */
4865 Lisp_Object ip_addresses
= check_for_dns (aproc
);
4866 if (!NILP (ip_addresses
) && !EQ (ip_addresses
, Qt
))
4867 connect_network_socket (aproc
, ip_addresses
, Qnil
);
4869 retry_for_async
= true;
4873 /* Continue TLS negotiation. */
4874 if (p
->gnutls_initstage
== GNUTLS_STAGE_HANDSHAKE_TRIED
4875 && p
->is_non_blocking_client
)
4877 gnutls_try_handshake (p
);
4878 p
->gnutls_handshakes_tried
++;
4880 if (p
->gnutls_initstage
== GNUTLS_STAGE_READY
)
4882 gnutls_verify_boot (aproc
, Qnil
);
4883 finish_after_tls_connection (aproc
);
4887 retry_for_async
= true;
4888 if (p
->gnutls_handshakes_tried
4889 > GNUTLS_EMACS_HANDSHAKES_LIMIT
)
4891 deactivate_process (aproc
);
4892 pset_status (p
, list2 (Qfailed
,
4893 build_string ("TLS negotiation failed")));
4901 #endif /* GETADDRINFO_A or GNUTLS */
4903 /* Compute time from now till when time limit is up. */
4904 /* Exit if already run out. */
4905 if (wait
== TIMEOUT
)
4907 if (!timespec_valid_p (now
))
4908 now
= current_timespec ();
4909 if (timespec_cmp (end_time
, now
) <= 0)
4911 timeout
= timespec_sub (end_time
, now
);
4914 timeout
= make_timespec (wait
< TIMEOUT
? 0 : 100000, 0);
4916 /* Normally we run timers here.
4917 But not if wait_for_cell; in those cases,
4918 the wait is supposed to be short,
4919 and those callers cannot handle running arbitrary Lisp code here. */
4920 if (NILP (wait_for_cell
)
4921 && just_wait_proc
>= 0)
4925 unsigned old_timers_run
= timers_run
;
4926 struct buffer
*old_buffer
= current_buffer
;
4927 Lisp_Object old_window
= selected_window
;
4929 timer_delay
= timer_check ();
4931 /* If a timer has run, this might have changed buffers
4932 an alike. Make read_key_sequence aware of that. */
4933 if (timers_run
!= old_timers_run
4934 && (old_buffer
!= current_buffer
4935 || !EQ (old_window
, selected_window
))
4936 && waiting_for_user_input_p
== -1)
4937 record_asynch_buffer_change ();
4939 if (timers_run
!= old_timers_run
&& do_display
)
4940 /* We must retry, since a timer may have requeued itself
4941 and that could alter the time_delay. */
4942 redisplay_preserve_echo_area (9);
4946 while (!detect_input_pending ());
4948 /* If there is unread keyboard input, also return. */
4950 && requeued_events_pending_p ())
4953 /* This is so a breakpoint can be put here. */
4954 if (!timespec_valid_p (timer_delay
))
4955 wait_reading_process_output_1 ();
4958 /* Cause C-g and alarm signals to take immediate action,
4959 and cause input available signals to zero out timeout.
4961 It is important that we do this before checking for process
4962 activity. If we get a SIGCHLD after the explicit checks for
4963 process activity, timeout is the only way we will know. */
4965 set_waiting_for_input (&timeout
);
4967 /* If status of something has changed, and no input is
4968 available, notify the user of the change right away. After
4969 this explicit check, we'll let the SIGCHLD handler zap
4970 timeout to get our attention. */
4971 if (update_tick
!= process_tick
)
4976 if (kbd_on_hold_p ())
4979 Atemp
= input_wait_mask
;
4982 timeout
= make_timespec (0, 0);
4983 if ((pselect (max (max_process_desc
, max_input_desc
) + 1,
4985 (num_pending_connects
> 0 ? &Ctemp
: NULL
),
4986 NULL
, &timeout
, NULL
)
4989 /* It's okay for us to do this and then continue with
4990 the loop, since timeout has already been zeroed out. */
4991 clear_waiting_for_input ();
4992 got_some_output
= status_notify (NULL
, wait_proc
);
4993 if (do_display
) redisplay_preserve_echo_area (13);
4997 /* Don't wait for output from a non-running process. Just
4998 read whatever data has already been received. */
4999 if (wait_proc
&& wait_proc
->raw_status_new
)
5000 update_status (wait_proc
);
5002 && ! EQ (wait_proc
->status
, Qrun
)
5003 && ! EQ (wait_proc
->status
, Qconnect
))
5005 bool read_some_bytes
= false;
5007 clear_waiting_for_input ();
5009 /* If data can be read from the process, do so until exhausted. */
5010 if (wait_proc
->infd
>= 0)
5012 XSETPROCESS (proc
, wait_proc
);
5016 int nread
= read_process_output (proc
, wait_proc
->infd
);
5019 if (errno
== EIO
|| errno
== EAGAIN
)
5022 if (errno
== EWOULDBLOCK
)
5028 if (got_some_output
< nread
)
5029 got_some_output
= nread
;
5032 read_some_bytes
= true;
5037 if (read_some_bytes
&& do_display
)
5038 redisplay_preserve_echo_area (10);
5043 /* Wait till there is something to do. */
5045 if (wait_proc
&& just_wait_proc
)
5047 if (wait_proc
->infd
< 0) /* Terminated. */
5049 FD_SET (wait_proc
->infd
, &Available
);
5053 else if (!NILP (wait_for_cell
))
5055 Available
= non_process_wait_mask
;
5062 Available
= non_keyboard_wait_mask
;
5064 Available
= input_wait_mask
;
5065 Writeok
= write_mask
;
5066 check_delay
= wait_proc
? 0 : process_output_delay_count
;
5070 /* If frame size has changed or the window is newly mapped,
5071 redisplay now, before we start to wait. There is a race
5072 condition here; if a SIGIO arrives between now and the select
5073 and indicates that a frame is trashed, the select may block
5074 displaying a trashed screen. */
5075 if (frame_garbaged
&& do_display
)
5077 clear_waiting_for_input ();
5078 redisplay_preserve_echo_area (11);
5080 set_waiting_for_input (&timeout
);
5083 /* Skip the `select' call if input is available and we're
5084 waiting for keyboard input or a cell change (which can be
5085 triggered by processing X events). In the latter case, set
5086 nfds to 1 to avoid breaking the loop. */
5088 if ((read_kbd
|| !NILP (wait_for_cell
))
5089 && detect_input_pending ())
5091 nfds
= read_kbd
? 0 : 1;
5093 FD_ZERO (&Available
);
5097 /* Set the timeout for adaptive read buffering if any
5098 process has non-zero read_output_skip and non-zero
5099 read_output_delay, and we are not reading output for a
5100 specific process. It is not executed if
5101 Vprocess_adaptive_read_buffering is nil. */
5102 if (process_output_skip
&& check_delay
> 0)
5104 int adaptive_nsecs
= timeout
.tv_nsec
;
5105 if (timeout
.tv_sec
> 0 || adaptive_nsecs
> READ_OUTPUT_DELAY_MAX
)
5106 adaptive_nsecs
= READ_OUTPUT_DELAY_MAX
;
5107 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
5109 proc
= chan_process
[channel
];
5112 /* Find minimum non-zero read_output_delay among the
5113 processes with non-zero read_output_skip. */
5114 if (XPROCESS (proc
)->read_output_delay
> 0)
5117 if (!XPROCESS (proc
)->read_output_skip
)
5119 FD_CLR (channel
, &Available
);
5120 process_skipped
= true;
5121 XPROCESS (proc
)->read_output_skip
= 0;
5122 if (XPROCESS (proc
)->read_output_delay
< adaptive_nsecs
)
5123 adaptive_nsecs
= XPROCESS (proc
)->read_output_delay
;
5126 timeout
= make_timespec (0, adaptive_nsecs
);
5127 process_output_skip
= 0;
5130 /* If we've got some output and haven't limited our timeout
5131 with adaptive read buffering, limit it. */
5132 if (got_some_output
> 0 && !process_skipped
5134 || timeout
.tv_nsec
> READ_OUTPUT_DELAY_INCREMENT
))
5135 timeout
= make_timespec (0, READ_OUTPUT_DELAY_INCREMENT
);
5138 if (NILP (wait_for_cell
) && just_wait_proc
>= 0
5139 && timespec_valid_p (timer_delay
)
5140 && timespec_cmp (timer_delay
, timeout
) < 0)
5142 if (!timespec_valid_p (now
))
5143 now
= current_timespec ();
5144 struct timespec timeout_abs
= timespec_add (now
, timeout
);
5145 if (!timespec_valid_p (got_output_end_time
)
5146 || timespec_cmp (timeout_abs
, got_output_end_time
) < 0)
5147 got_output_end_time
= timeout_abs
;
5148 timeout
= timer_delay
;
5151 got_output_end_time
= invalid_timespec ();
5153 /* NOW can become inaccurate if time can pass during pselect. */
5154 if (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> 0)
5155 now
= invalid_timespec ();
5157 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
5159 && (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> ASYNC_RETRY_NSEC
))
5162 timeout
.tv_nsec
= ASYNC_RETRY_NSEC
;
5166 #if defined (HAVE_NS)
5168 #elif defined (HAVE_GLIB)
5173 (max (max_process_desc
, max_input_desc
) + 1,
5175 (check_write
? &Writeok
: 0),
5176 NULL
, &timeout
, NULL
);
5179 /* GnuTLS buffers data internally. In lowat mode it leaves
5180 some data in the TCP buffers so that select works, but
5181 with custom pull/push functions we need to check if some
5182 data is available in the buffers manually. */
5185 fd_set tls_available
;
5188 FD_ZERO (&tls_available
);
5191 /* We're not waiting on a specific process, so loop
5192 through all the channels and check for data.
5193 This is a workaround needed for some versions of
5194 the gnutls library -- 2.12.14 has been confirmed
5196 http://comments.gmane.org/gmane.emacs.devel/145074 */
5197 for (channel
= 0; channel
< FD_SETSIZE
; ++channel
)
5198 if (! NILP (chan_process
[channel
]))
5200 struct Lisp_Process
*p
=
5201 XPROCESS (chan_process
[channel
]);
5202 if (p
&& p
->gnutls_p
&& p
->gnutls_state
5203 && ((emacs_gnutls_record_check_pending
5208 eassert (p
->infd
== channel
);
5209 FD_SET (p
->infd
, &tls_available
);
5216 /* Check this specific channel. */
5217 if (wait_proc
->gnutls_p
/* Check for valid process. */
5218 && wait_proc
->gnutls_state
5219 /* Do we have pending data? */
5220 && ((emacs_gnutls_record_check_pending
5221 (wait_proc
->gnutls_state
))
5225 eassert (0 <= wait_proc
->infd
);
5226 /* Set to Available. */
5227 FD_SET (wait_proc
->infd
, &tls_available
);
5232 Available
= tls_available
;
5239 /* Make C-g and alarm signals set flags again. */
5240 clear_waiting_for_input ();
5242 /* If we woke up due to SIGWINCH, actually change size now. */
5243 do_pending_window_change (0);
5247 /* Exit the main loop if we've passed the requested timeout,
5248 or aren't skipping processes and got some output and
5249 haven't lowered our timeout due to timers or SIGIO and
5250 have waited a long amount of time due to repeated
5254 struct timespec cmp_time
5257 : (!process_skipped
&& got_some_output
> 0
5258 && (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> 0))
5259 ? got_output_end_time
5260 : invalid_timespec ());
5261 if (timespec_valid_p (cmp_time
))
5263 now
= current_timespec ();
5264 if (timespec_cmp (cmp_time
, now
) <= 0)
5271 if (xerrno
== EINTR
)
5273 else if (xerrno
== EBADF
)
5276 report_file_errno ("Failed select", Qnil
, xerrno
);
5279 /* Check for keyboard input. */
5280 /* If there is any, return immediately
5281 to give it higher priority than subprocesses. */
5285 unsigned old_timers_run
= timers_run
;
5286 struct buffer
*old_buffer
= current_buffer
;
5287 Lisp_Object old_window
= selected_window
;
5290 if (detect_input_pending_run_timers (do_display
))
5292 swallow_events (do_display
);
5293 if (detect_input_pending_run_timers (do_display
))
5297 /* If a timer has run, this might have changed buffers
5298 an alike. Make read_key_sequence aware of that. */
5299 if (timers_run
!= old_timers_run
5300 && waiting_for_user_input_p
== -1
5301 && (old_buffer
!= current_buffer
5302 || !EQ (old_window
, selected_window
)))
5303 record_asynch_buffer_change ();
5309 /* If there is unread keyboard input, also return. */
5311 && requeued_events_pending_p ())
5314 /* If we are not checking for keyboard input now,
5315 do process events (but don't run any timers).
5316 This is so that X events will be processed.
5317 Otherwise they may have to wait until polling takes place.
5318 That would causes delays in pasting selections, for example.
5320 (We used to do this only if wait_for_cell.) */
5321 if (read_kbd
== 0 && detect_input_pending ())
5323 swallow_events (do_display
);
5324 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5325 if (detect_input_pending ())
5330 /* Exit now if the cell we're waiting for became non-nil. */
5331 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5335 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5336 go read it. This can happen with X on BSD after logging out.
5337 In that case, there really is no input and no SIGIO,
5338 but select says there is input. */
5340 if (read_kbd
&& interrupt_input
5341 && keyboard_bit_set (&Available
) && ! noninteractive
)
5342 handle_input_available_signal (SIGIO
);
5345 /* If checking input just got us a size-change event from X,
5346 obey it now if we should. */
5347 if (read_kbd
|| ! NILP (wait_for_cell
))
5348 do_pending_window_change (0);
5350 /* Check for data from a process. */
5351 if (no_avail
|| nfds
== 0)
5354 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
5356 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
5358 && ((d
->condition
& FOR_READ
5359 && FD_ISSET (channel
, &Available
))
5360 || (d
->condition
& FOR_WRITE
5361 && FD_ISSET (channel
, &write_mask
))))
5362 d
->func (channel
, d
->data
);
5365 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5367 if (FD_ISSET (channel
, &Available
)
5368 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
5369 && !FD_ISSET (channel
, &non_process_wait_mask
))
5373 /* If waiting for this channel, arrange to return as
5374 soon as no more input to be processed. No more
5376 proc
= chan_process
[channel
];
5380 /* If this is a server stream socket, accept connection. */
5381 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5383 server_accept_connection (proc
, channel
);
5387 /* Read data from the process, starting with our
5388 buffered-ahead character if we have one. */
5390 nread
= read_process_output (proc
, channel
);
5391 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
))
5392 && got_some_output
< nread
)
5393 got_some_output
= nread
;
5396 /* Vacuum up any leftovers without waiting. */
5397 if (wait_proc
== XPROCESS (proc
))
5399 /* Since read_process_output can run a filter,
5400 which can call accept-process-output,
5401 don't try to read from any other processes
5402 before doing the select again. */
5403 FD_ZERO (&Available
);
5406 redisplay_preserve_echo_area (12);
5409 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5412 else if (nread
== -1 && errno
== EAGAIN
)
5415 /* FIXME: Is this special case still needed? */
5416 /* Note that we cannot distinguish between no input
5417 available now and a closed pipe.
5418 With luck, a closed pipe will be accompanied by
5419 subprocess termination and SIGCHLD. */
5420 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
)
5421 && !PIPECONN_P (proc
))
5425 /* On some OSs with ptys, when the process on one end of
5426 a pty exits, the other end gets an error reading with
5427 errno = EIO instead of getting an EOF (0 bytes read).
5428 Therefore, if we get an error reading and errno =
5429 EIO, just continue, because the child process has
5430 exited and should clean itself up soon (e.g. when we
5432 else if (nread
== -1 && errno
== EIO
)
5434 struct Lisp_Process
*p
= XPROCESS (proc
);
5436 /* Clear the descriptor now, so we only raise the
5438 FD_CLR (channel
, &input_wait_mask
);
5439 FD_CLR (channel
, &non_keyboard_wait_mask
);
5443 /* If the EIO occurs on a pty, the SIGCHLD handler's
5444 waitpid call will not find the process object to
5445 delete. Do it here. */
5446 p
->tick
= ++process_tick
;
5447 pset_status (p
, Qfailed
);
5450 #endif /* HAVE_PTYS */
5451 /* If we can detect process termination, don't consider the
5452 process gone just because its pipe is closed. */
5453 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
)
5454 && !PIPECONN_P (proc
))
5456 else if (nread
== 0 && PIPECONN_P (proc
))
5458 /* Preserve status of processes already terminated. */
5459 XPROCESS (proc
)->tick
= ++process_tick
;
5460 deactivate_process (proc
);
5461 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5462 pset_status (XPROCESS (proc
),
5463 list2 (Qexit
, make_number (0)));
5467 /* Preserve status of processes already terminated. */
5468 XPROCESS (proc
)->tick
= ++process_tick
;
5469 deactivate_process (proc
);
5470 if (XPROCESS (proc
)->raw_status_new
)
5471 update_status (XPROCESS (proc
));
5472 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5473 pset_status (XPROCESS (proc
),
5474 list2 (Qexit
, make_number (256)));
5477 if (FD_ISSET (channel
, &Writeok
)
5478 && FD_ISSET (channel
, &connect_wait_mask
))
5480 struct Lisp_Process
*p
;
5482 FD_CLR (channel
, &connect_wait_mask
);
5483 FD_CLR (channel
, &write_mask
);
5484 if (--num_pending_connects
< 0)
5487 proc
= chan_process
[channel
];
5491 p
= XPROCESS (proc
);
5494 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5495 So only use it on systems where it is known to work. */
5497 socklen_t xlen
= sizeof (xerrno
);
5498 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5503 struct sockaddr pname
;
5504 socklen_t pnamelen
= sizeof (pname
);
5506 /* If connection failed, getpeername will fail. */
5508 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
5510 /* Obtain connect failure code through error slippage. */
5513 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
5520 p
->tick
= ++process_tick
;
5521 pset_status (p
, list2 (Qfailed
, make_number (xerrno
)));
5522 deactivate_process (proc
);
5527 /* If we have an incompletely set up TLS connection,
5528 then defer the sentinel signaling until
5530 if (NILP (p
->gnutls_boot_parameters
)
5534 pset_status (p
, Qrun
);
5535 /* Execute the sentinel here. If we had relied on
5536 status_notify to do it later, it will read input
5537 from the process before calling the sentinel. */
5538 exec_sentinel (proc
, build_string ("open\n"));
5541 if (0 <= p
->infd
&& !EQ (p
->filter
, Qt
)
5542 && !EQ (p
->command
, Qt
))
5544 FD_SET (p
->infd
, &input_wait_mask
);
5545 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5549 } /* End for each file descriptor. */
5550 } /* End while exit conditions not met. */
5552 unbind_to (count
, Qnil
);
5554 /* If calling from keyboard input, do not quit
5555 since we want to return C-g as an input character.
5556 Otherwise, do pending quit if requested. */
5559 /* Prevent input_pending from remaining set if we quit. */
5560 clear_input_pending ();
5564 return got_some_output
;
5567 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5570 read_process_output_call (Lisp_Object fun_and_args
)
5572 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5576 read_process_output_error_handler (Lisp_Object error_val
)
5578 cmd_error_internal (error_val
, "error in process filter: ");
5580 update_echo_area ();
5581 Fsleep_for (make_number (2), Qnil
);
5586 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5588 struct coding_system
*coding
);
5590 /* Read pending output from the process channel,
5591 starting with our buffered-ahead character if we have one.
5592 Yield number of decoded characters read.
5594 This function reads at most 4096 characters.
5595 If you want to read all available subprocess output,
5596 you must call it repeatedly until it returns zero.
5598 The characters read are decoded according to PROC's coding-system
5602 read_process_output (Lisp_Object proc
, int channel
)
5605 struct Lisp_Process
*p
= XPROCESS (proc
);
5606 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5607 int carryover
= p
->decoding_carryover
;
5608 enum { readmax
= 4096 };
5609 ptrdiff_t count
= SPECPDL_INDEX ();
5610 Lisp_Object odeactivate
;
5611 char chars
[sizeof coding
->carryover
+ readmax
];
5614 /* See the comment above. */
5615 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
5617 #ifdef DATAGRAM_SOCKETS
5618 /* We have a working select, so proc_buffered_char is always -1. */
5619 if (DATAGRAM_CHAN_P (channel
))
5621 socklen_t len
= datagram_address
[channel
].len
;
5622 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5623 0, datagram_address
[channel
].sa
, &len
);
5628 bool buffered
= proc_buffered_char
[channel
] >= 0;
5631 chars
[carryover
] = proc_buffered_char
[channel
];
5632 proc_buffered_char
[channel
] = -1;
5635 if (p
->gnutls_p
&& p
->gnutls_state
)
5636 nbytes
= emacs_gnutls_read (p
, chars
+ carryover
+ buffered
,
5637 readmax
- buffered
);
5640 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5641 readmax
- buffered
);
5642 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5644 int delay
= p
->read_output_delay
;
5647 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5650 process_output_delay_count
++;
5651 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5654 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5656 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5658 process_output_delay_count
--;
5660 p
->read_output_delay
= delay
;
5663 p
->read_output_skip
= 1;
5664 process_output_skip
= 1;
5668 nbytes
+= buffered
&& nbytes
<= 0;
5671 p
->decoding_carryover
= 0;
5673 /* At this point, NBYTES holds number of bytes just received
5674 (including the one in proc_buffered_char[channel]). */
5677 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5679 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5682 /* Now set NBYTES how many bytes we must decode. */
5683 nbytes
+= carryover
;
5685 odeactivate
= Vdeactivate_mark
;
5686 /* There's no good reason to let process filters change the current
5687 buffer, and many callers of accept-process-output, sit-for, and
5688 friends don't expect current-buffer to be changed from under them. */
5689 record_unwind_current_buffer ();
5691 read_and_dispose_of_process_output (p
, chars
, nbytes
, coding
);
5693 /* Handling the process output should not deactivate the mark. */
5694 Vdeactivate_mark
= odeactivate
;
5696 unbind_to (count
, Qnil
);
5701 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5703 struct coding_system
*coding
)
5705 Lisp_Object outstream
= p
->filter
;
5707 bool outer_running_asynch_code
= running_asynch_code
;
5708 int waiting
= waiting_for_user_input_p
;
5711 Lisp_Object obuffer
, okeymap
;
5712 XSETBUFFER (obuffer
, current_buffer
);
5713 okeymap
= BVAR (current_buffer
, keymap
);
5716 /* We inhibit quit here instead of just catching it so that
5717 hitting ^G when a filter happens to be running won't screw
5719 specbind (Qinhibit_quit
, Qt
);
5720 specbind (Qlast_nonmenu_event
, Qt
);
5722 /* In case we get recursively called,
5723 and we already saved the match data nonrecursively,
5724 save the same match data in safely recursive fashion. */
5725 if (outer_running_asynch_code
)
5728 /* Don't clobber the CURRENT match data, either! */
5729 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5730 restore_search_regs ();
5731 record_unwind_save_match_data ();
5732 Fset_match_data (tem
, Qt
);
5735 /* For speed, if a search happens within this code,
5736 save the match data in a special nonrecursive fashion. */
5737 running_asynch_code
= 1;
5739 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5740 text
= coding
->dst_object
;
5741 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5742 /* A new coding system might be found. */
5743 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5745 pset_decode_coding_system (p
, Vlast_coding_system_used
);
5747 /* Don't call setup_coding_system for
5748 proc_decode_coding_system[channel] here. It is done in
5749 detect_coding called via decode_coding above. */
5751 /* If a coding system for encoding is not yet decided, we set
5752 it as the same as coding-system for decoding.
5754 But, before doing that we must check if
5755 proc_encode_coding_system[p->outfd] surely points to a
5756 valid memory because p->outfd will be changed once EOF is
5757 sent to the process. */
5758 if (NILP (p
->encode_coding_system
) && p
->outfd
>= 0
5759 && proc_encode_coding_system
[p
->outfd
])
5761 pset_encode_coding_system
5762 (p
, coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
));
5763 setup_coding_system (p
->encode_coding_system
,
5764 proc_encode_coding_system
[p
->outfd
]);
5768 if (coding
->carryover_bytes
> 0)
5770 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5771 pset_decoding_buf (p
, make_uninit_string (coding
->carryover_bytes
));
5772 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5773 coding
->carryover_bytes
);
5774 p
->decoding_carryover
= coding
->carryover_bytes
;
5776 if (SBYTES (text
) > 0)
5777 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5778 sometimes it's simply wrong to wrap (e.g. when called from
5779 accept-process-output). */
5780 internal_condition_case_1 (read_process_output_call
,
5781 list3 (outstream
, make_lisp_proc (p
), text
),
5782 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5783 read_process_output_error_handler
);
5785 /* If we saved the match data nonrecursively, restore it now. */
5786 restore_search_regs ();
5787 running_asynch_code
= outer_running_asynch_code
;
5789 /* Restore waiting_for_user_input_p as it was
5790 when we were called, in case the filter clobbered it. */
5791 waiting_for_user_input_p
= waiting
;
5793 #if 0 /* Call record_asynch_buffer_change unconditionally,
5794 because we might have changed minor modes or other things
5795 that affect key bindings. */
5796 if (! EQ (Fcurrent_buffer (), obuffer
)
5797 || ! EQ (current_buffer
->keymap
, okeymap
))
5799 /* But do it only if the caller is actually going to read events.
5800 Otherwise there's no need to make him wake up, and it could
5801 cause trouble (for example it would make sit_for return). */
5802 if (waiting_for_user_input_p
== -1)
5803 record_asynch_buffer_change ();
5806 DEFUN ("internal-default-process-filter", Finternal_default_process_filter
,
5807 Sinternal_default_process_filter
, 2, 2, 0,
5808 doc
: /* Function used as default process filter.
5809 This inserts the process's output into its buffer, if there is one.
5810 Otherwise it discards the output. */)
5811 (Lisp_Object proc
, Lisp_Object text
)
5813 struct Lisp_Process
*p
;
5816 CHECK_PROCESS (proc
);
5817 p
= XPROCESS (proc
);
5818 CHECK_STRING (text
);
5820 if (!NILP (p
->buffer
) && BUFFER_LIVE_P (XBUFFER (p
->buffer
)))
5822 Lisp_Object old_read_only
;
5823 ptrdiff_t old_begv
, old_zv
;
5824 ptrdiff_t old_begv_byte
, old_zv_byte
;
5825 ptrdiff_t before
, before_byte
;
5826 ptrdiff_t opoint_byte
;
5829 Fset_buffer (p
->buffer
);
5831 opoint_byte
= PT_BYTE
;
5832 old_read_only
= BVAR (current_buffer
, read_only
);
5835 old_begv_byte
= BEGV_BYTE
;
5836 old_zv_byte
= ZV_BYTE
;
5838 bset_read_only (current_buffer
, Qnil
);
5840 /* Insert new output into buffer at the current end-of-output
5841 marker, thus preserving logical ordering of input and output. */
5842 if (XMARKER (p
->mark
)->buffer
)
5843 set_point_from_marker (p
->mark
);
5845 SET_PT_BOTH (ZV
, ZV_BYTE
);
5847 before_byte
= PT_BYTE
;
5849 /* If the output marker is outside of the visible region, save
5850 the restriction and widen. */
5851 if (! (BEGV
<= PT
&& PT
<= ZV
))
5854 /* Adjust the multibyteness of TEXT to that of the buffer. */
5855 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5856 != ! STRING_MULTIBYTE (text
))
5857 text
= (STRING_MULTIBYTE (text
)
5858 ? Fstring_as_unibyte (text
)
5859 : Fstring_to_multibyte (text
));
5860 /* Insert before markers in case we are inserting where
5861 the buffer's mark is, and the user's next command is Meta-y. */
5862 insert_from_string_before_markers (text
, 0, 0,
5863 SCHARS (text
), SBYTES (text
), 0);
5865 /* Make sure the process marker's position is valid when the
5866 process buffer is changed in the signal_after_change above.
5867 W3 is known to do that. */
5868 if (BUFFERP (p
->buffer
)
5869 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5870 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5872 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5874 update_mode_lines
= 23;
5876 /* Make sure opoint and the old restrictions
5877 float ahead of any new text just as point would. */
5878 if (opoint
>= before
)
5880 opoint
+= PT
- before
;
5881 opoint_byte
+= PT_BYTE
- before_byte
;
5883 if (old_begv
> before
)
5885 old_begv
+= PT
- before
;
5886 old_begv_byte
+= PT_BYTE
- before_byte
;
5888 if (old_zv
>= before
)
5890 old_zv
+= PT
- before
;
5891 old_zv_byte
+= PT_BYTE
- before_byte
;
5894 /* If the restriction isn't what it should be, set it. */
5895 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5896 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5898 bset_read_only (current_buffer
, old_read_only
);
5899 SET_PT_BOTH (opoint
, opoint_byte
);
5904 /* Sending data to subprocess. */
5906 /* In send_process, when a write fails temporarily,
5907 wait_reading_process_output is called. It may execute user code,
5908 e.g. timers, that attempts to write new data to the same process.
5909 We must ensure that data is sent in the right order, and not
5910 interspersed half-completed with other writes (Bug#10815). This is
5911 handled by the write_queue element of struct process. It is a list
5912 with each entry having the form
5914 (string . (offset . length))
5916 where STRING is a lisp string, OFFSET is the offset into the
5917 string's byte sequence from which we should begin to send, and
5918 LENGTH is the number of bytes left to send. */
5920 /* Create a new entry in write_queue.
5921 INPUT_OBJ should be a buffer, string Qt, or Qnil.
5922 BUF is a pointer to the string sequence of the input_obj or a C
5923 string in case of Qt or Qnil. */
5926 write_queue_push (struct Lisp_Process
*p
, Lisp_Object input_obj
,
5927 const char *buf
, ptrdiff_t len
, bool front
)
5930 Lisp_Object entry
, obj
;
5932 if (STRINGP (input_obj
))
5934 offset
= buf
- SSDATA (input_obj
);
5940 obj
= make_unibyte_string (buf
, len
);
5943 entry
= Fcons (obj
, Fcons (make_number (offset
), make_number (len
)));
5946 pset_write_queue (p
, Fcons (entry
, p
->write_queue
));
5948 pset_write_queue (p
, nconc2 (p
->write_queue
, list1 (entry
)));
5951 /* Remove the first element in the write_queue of process P, put its
5952 contents in OBJ, BUF and LEN, and return true. If the
5953 write_queue is empty, return false. */
5956 write_queue_pop (struct Lisp_Process
*p
, Lisp_Object
*obj
,
5957 const char **buf
, ptrdiff_t *len
)
5959 Lisp_Object entry
, offset_length
;
5962 if (NILP (p
->write_queue
))
5965 entry
= XCAR (p
->write_queue
);
5966 pset_write_queue (p
, XCDR (p
->write_queue
));
5968 *obj
= XCAR (entry
);
5969 offset_length
= XCDR (entry
);
5971 *len
= XINT (XCDR (offset_length
));
5972 offset
= XINT (XCAR (offset_length
));
5973 *buf
= SSDATA (*obj
) + offset
;
5978 /* Send some data to process PROC.
5979 BUF is the beginning of the data; LEN is the number of characters.
5980 OBJECT is the Lisp object that the data comes from. If OBJECT is
5981 nil or t, it means that the data comes from C string.
5983 If OBJECT is not nil, the data is encoded by PROC's coding-system
5984 for encoding before it is sent.
5986 This function can evaluate Lisp code and can garbage collect. */
5989 send_process (Lisp_Object proc
, const char *buf
, ptrdiff_t len
,
5992 struct Lisp_Process
*p
= XPROCESS (proc
);
5994 struct coding_system
*coding
;
5996 if (NETCONN_P (proc
))
5998 wait_while_connecting (proc
);
5999 wait_for_tls_negotiation (proc
);
6002 if (p
->raw_status_new
)
6004 if (! EQ (p
->status
, Qrun
))
6005 error ("Process %s not running", SDATA (p
->name
));
6007 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
6009 coding
= proc_encode_coding_system
[p
->outfd
];
6010 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
6012 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
6013 || (BUFFERP (object
)
6014 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
6017 pset_encode_coding_system
6018 (p
, complement_process_encoding_system (p
->encode_coding_system
));
6019 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
6021 /* The coding system for encoding was changed to raw-text
6022 because we sent a unibyte text previously. Now we are
6023 sending a multibyte text, thus we must encode it by the
6024 original coding system specified for the current process.
6026 Another reason we come here is that the coding system
6027 was just complemented and a new one was returned by
6028 complement_process_encoding_system. */
6029 setup_coding_system (p
->encode_coding_system
, coding
);
6030 Vlast_coding_system_used
= p
->encode_coding_system
;
6032 coding
->src_multibyte
= 1;
6036 coding
->src_multibyte
= 0;
6037 /* For sending a unibyte text, character code conversion should
6038 not take place but EOL conversion should. So, setup raw-text
6039 or one of the subsidiary if we have not yet done it. */
6040 if (CODING_REQUIRE_ENCODING (coding
))
6042 if (CODING_REQUIRE_FLUSHING (coding
))
6044 /* But, before changing the coding, we must flush out data. */
6045 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6046 send_process (proc
, "", 0, Qt
);
6047 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
6049 setup_coding_system (raw_text_coding_system
6050 (Vlast_coding_system_used
),
6052 coding
->src_multibyte
= 0;
6055 coding
->dst_multibyte
= 0;
6057 if (CODING_REQUIRE_ENCODING (coding
))
6059 coding
->dst_object
= Qt
;
6060 if (BUFFERP (object
))
6062 ptrdiff_t from_byte
, from
, to
;
6063 ptrdiff_t save_pt
, save_pt_byte
;
6064 struct buffer
*cur
= current_buffer
;
6066 set_buffer_internal (XBUFFER (object
));
6067 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
6069 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
6070 from
= BYTE_TO_CHAR (from_byte
);
6071 to
= BYTE_TO_CHAR (from_byte
+ len
);
6072 TEMP_SET_PT_BOTH (from
, from_byte
);
6073 encode_coding_object (coding
, object
, from
, from_byte
,
6074 to
, from_byte
+ len
, Qt
);
6075 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
6076 set_buffer_internal (cur
);
6078 else if (STRINGP (object
))
6080 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
6081 SBYTES (object
), Qt
);
6085 coding
->dst_object
= make_unibyte_string (buf
, len
);
6086 coding
->produced
= len
;
6089 len
= coding
->produced
;
6090 object
= coding
->dst_object
;
6091 buf
= SSDATA (object
);
6094 /* If there is already data in the write_queue, put the new data
6095 in the back of queue. Otherwise, ignore it. */
6096 if (!NILP (p
->write_queue
))
6097 write_queue_push (p
, object
, buf
, len
, 0);
6099 do /* while !NILP (p->write_queue) */
6101 ptrdiff_t cur_len
= -1;
6102 const char *cur_buf
;
6103 Lisp_Object cur_object
;
6105 /* If write_queue is empty, ignore it. */
6106 if (!write_queue_pop (p
, &cur_object
, &cur_buf
, &cur_len
))
6110 cur_object
= object
;
6115 /* Send this batch, using one or more write calls. */
6116 ptrdiff_t written
= 0;
6117 int outfd
= p
->outfd
;
6118 #ifdef DATAGRAM_SOCKETS
6119 if (DATAGRAM_CHAN_P (outfd
))
6121 rv
= sendto (outfd
, cur_buf
, cur_len
,
6122 0, datagram_address
[outfd
].sa
,
6123 datagram_address
[outfd
].len
);
6126 else if (errno
== EMSGSIZE
)
6127 report_file_error ("Sending datagram", proc
);
6133 if (p
->gnutls_p
&& p
->gnutls_state
)
6134 written
= emacs_gnutls_write (p
, cur_buf
, cur_len
);
6137 written
= emacs_write_sig (outfd
, cur_buf
, cur_len
);
6138 rv
= (written
? 0 : -1);
6139 if (p
->read_output_delay
> 0
6140 && p
->adaptive_read_buffering
== 1)
6142 p
->read_output_delay
= 0;
6143 process_output_delay_count
--;
6144 p
->read_output_skip
= 0;
6152 || errno
== EWOULDBLOCK
6155 /* Buffer is full. Wait, accepting input;
6156 that may allow the program
6157 to finish doing output and read more. */
6159 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
6160 /* A gross hack to work around a bug in FreeBSD.
6161 In the following sequence, read(2) returns
6165 write(2) 954 bytes, get EAGAIN
6166 read(2) 1024 bytes in process_read_output
6167 read(2) 11 bytes in process_read_output
6169 That is, read(2) returns more bytes than have
6170 ever been written successfully. The 1033 bytes
6171 read are the 1022 bytes written successfully
6172 after processing (for example with CRs added if
6173 the terminal is set up that way which it is
6174 here). The same bytes will be seen again in a
6175 later read(2), without the CRs. */
6177 if (errno
== EAGAIN
)
6180 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
6182 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
6184 /* Put what we should have written in wait_queue. */
6185 write_queue_push (p
, cur_object
, cur_buf
, cur_len
, 1);
6186 wait_reading_process_output (0, 20 * 1000 * 1000,
6187 0, 0, Qnil
, NULL
, 0);
6188 /* Reread queue, to see what is left. */
6191 else if (errno
== EPIPE
)
6193 p
->raw_status_new
= 0;
6194 pset_status (p
, list2 (Qexit
, make_number (256)));
6195 p
->tick
= ++process_tick
;
6196 deactivate_process (proc
);
6197 error ("process %s no longer connected to pipe; closed it",
6201 /* This is a real error. */
6202 report_file_error ("Writing to process", proc
);
6208 while (!NILP (p
->write_queue
));
6211 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
6213 doc
: /* Send current contents of region as input to PROCESS.
6214 PROCESS may be a process, a buffer, the name of a process or buffer, or
6215 nil, indicating the current buffer's process.
6216 Called from program, takes three arguments, PROCESS, START and END.
6217 If the region is more than 500 characters long,
6218 it is sent in several bunches. This may happen even for shorter regions.
6219 Output from processes can arrive in between bunches.
6221 If PROCESS is a non-blocking network process that hasn't been fully
6222 set up yet, this function will block until socket setup has completed. */)
6223 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
6225 Lisp_Object proc
= get_process (process
);
6226 ptrdiff_t start_byte
, end_byte
;
6228 validate_region (&start
, &end
);
6230 start_byte
= CHAR_TO_BYTE (XINT (start
));
6231 end_byte
= CHAR_TO_BYTE (XINT (end
));
6233 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
6234 move_gap_both (XINT (start
), start_byte
);
6236 if (NETCONN_P (proc
))
6237 wait_while_connecting (proc
);
6239 send_process (proc
, (char *) BYTE_POS_ADDR (start_byte
),
6240 end_byte
- start_byte
, Fcurrent_buffer ());
6245 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
6247 doc
: /* Send PROCESS the contents of STRING as input.
6248 PROCESS may be a process, a buffer, the name of a process or buffer, or
6249 nil, indicating the current buffer's process.
6250 If STRING is more than 500 characters long,
6251 it is sent in several bunches. This may happen even for shorter strings.
6252 Output from processes can arrive in between bunches.
6254 If PROCESS is a non-blocking network process that hasn't been fully
6255 set up yet, this function will block until socket setup has completed. */)
6256 (Lisp_Object process
, Lisp_Object string
)
6258 CHECK_STRING (string
);
6259 Lisp_Object proc
= get_process (process
);
6260 send_process (proc
, SSDATA (string
),
6261 SBYTES (string
), string
);
6265 /* Return the foreground process group for the tty/pty that
6266 the process P uses. */
6268 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
6273 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
6276 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
6277 master side. Try the slave side. */
6278 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
6282 ioctl (fd
, TIOCGPGRP
, &gid
);
6286 #endif /* defined (TIOCGPGRP ) */
6291 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
6292 Sprocess_running_child_p
, 0, 1, 0,
6293 doc
: /* Return non-nil if PROCESS has given the terminal to a
6294 child. If the operating system does not make it possible to find out,
6295 return t. If we can find out, return the numeric ID of the foreground
6297 (Lisp_Object process
)
6299 /* Initialize in case ioctl doesn't exist or gives an error,
6300 in a way that will cause returning t. */
6301 Lisp_Object proc
= get_process (process
);
6302 struct Lisp_Process
*p
= XPROCESS (proc
);
6304 if (!EQ (p
->type
, Qreal
))
6305 error ("Process %s is not a subprocess",
6308 error ("Process %s is not active",
6311 pid_t gid
= emacs_get_tty_pgrp (p
);
6316 return make_number (gid
);
6320 /* Send a signal number SIGNO to PROCESS.
6321 If CURRENT_GROUP is t, that means send to the process group
6322 that currently owns the terminal being used to communicate with PROCESS.
6323 This is used for various commands in shell mode.
6324 If CURRENT_GROUP is lambda, that means send to the process group
6325 that currently owns the terminal, but only if it is NOT the shell itself.
6327 If NOMSG is false, insert signal-announcements into process's buffers
6330 If we can, we try to signal PROCESS by sending control characters
6331 down the pty. This allows us to signal inferiors who have changed
6332 their uid, for which kill would return an EPERM error. */
6335 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
6339 struct Lisp_Process
*p
;
6343 proc
= get_process (process
);
6344 p
= XPROCESS (proc
);
6346 if (!EQ (p
->type
, Qreal
))
6347 error ("Process %s is not a subprocess",
6350 error ("Process %s is not active",
6354 current_group
= Qnil
;
6356 /* If we are using pgrps, get a pgrp number and make it negative. */
6357 if (NILP (current_group
))
6358 /* Send the signal to the shell's process group. */
6362 #ifdef SIGNALS_VIA_CHARACTERS
6363 /* If possible, send signals to the entire pgrp
6364 by sending an input character to it. */
6367 cc_t
*sig_char
= NULL
;
6369 tcgetattr (p
->infd
, &t
);
6374 sig_char
= &t
.c_cc
[VINTR
];
6378 sig_char
= &t
.c_cc
[VQUIT
];
6383 sig_char
= &t
.c_cc
[VSWTCH
];
6385 sig_char
= &t
.c_cc
[VSUSP
];
6390 if (sig_char
&& *sig_char
!= CDISABLE
)
6392 send_process (proc
, (char *) sig_char
, 1, Qnil
);
6395 /* If we can't send the signal with a character,
6396 fall through and send it another way. */
6398 /* The code above may fall through if it can't
6399 handle the signal. */
6400 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6403 /* Get the current pgrp using the tty itself, if we have that.
6404 Otherwise, use the pty to get the pgrp.
6405 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6406 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6407 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6408 His patch indicates that if TIOCGPGRP returns an error, then
6409 we should just assume that p->pid is also the process group id. */
6411 gid
= emacs_get_tty_pgrp (p
);
6414 /* If we can't get the information, assume
6415 the shell owns the tty. */
6418 /* It is not clear whether anything really can set GID to -1.
6419 Perhaps on some system one of those ioctls can or could do so.
6420 Or perhaps this is vestigial. */
6423 #else /* ! defined (TIOCGPGRP) */
6424 /* Can't select pgrps on this system, so we know that
6425 the child itself heads the pgrp. */
6427 #endif /* ! defined (TIOCGPGRP) */
6429 /* If current_group is lambda, and the shell owns the terminal,
6430 don't send any signal. */
6431 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6436 if (signo
== SIGCONT
)
6438 p
->raw_status_new
= 0;
6439 pset_status (p
, Qrun
);
6440 p
->tick
= ++process_tick
;
6443 status_notify (NULL
, NULL
);
6444 redisplay_preserve_echo_area (13);
6450 /* Work around a HP-UX 7.0 bug that mishandles signals to subjobs.
6451 We don't know whether the bug is fixed in later HP-UX versions. */
6452 if (! NILP (current_group
) && ioctl (p
->infd
, TIOCSIGSEND
, signo
) != -1)
6456 /* If we don't have process groups, send the signal to the immediate
6457 subprocess. That isn't really right, but it's better than any
6458 obvious alternative. */
6459 pid_t pid
= no_pgrp
? gid
: - gid
;
6461 /* Do not kill an already-reaped process, as that could kill an
6462 innocent bystander that happens to have the same process ID. */
6464 block_child_signal (&oldset
);
6467 unblock_child_signal (&oldset
);
6470 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6471 doc
: /* Interrupt process PROCESS.
6472 PROCESS may be a process, a buffer, or the name of a process or buffer.
6473 No arg or nil means current buffer's process.
6474 Second arg CURRENT-GROUP non-nil means send signal to
6475 the current process-group of the process's controlling terminal
6476 rather than to the process's own process group.
6477 If the process is a shell, this means interrupt current subjob
6478 rather than the shell.
6480 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6481 don't send the signal. */)
6482 (Lisp_Object process
, Lisp_Object current_group
)
6484 process_send_signal (process
, SIGINT
, current_group
, 0);
6488 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6489 doc
: /* Kill process PROCESS. May be process or name of one.
6490 See function `interrupt-process' for more details on usage. */)
6491 (Lisp_Object process
, Lisp_Object current_group
)
6493 process_send_signal (process
, SIGKILL
, current_group
, 0);
6497 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6498 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6499 See function `interrupt-process' for more details on usage. */)
6500 (Lisp_Object process
, Lisp_Object current_group
)
6502 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6506 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6507 doc
: /* Stop process PROCESS. May be process or name of one.
6508 See function `interrupt-process' for more details on usage.
6509 If PROCESS is a network or serial process, inhibit handling of incoming
6511 (Lisp_Object process
, Lisp_Object current_group
)
6513 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)
6514 || PIPECONN_P (process
)))
6516 struct Lisp_Process
*p
;
6518 p
= XPROCESS (process
);
6519 if (NILP (p
->command
)
6522 FD_CLR (p
->infd
, &input_wait_mask
);
6523 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6525 pset_command (p
, Qt
);
6529 error ("No SIGTSTP support");
6531 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6536 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6537 doc
: /* Continue process PROCESS. May be process or name of one.
6538 See function `interrupt-process' for more details on usage.
6539 If PROCESS is a network or serial process, resume handling of incoming
6541 (Lisp_Object process
, Lisp_Object current_group
)
6543 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)
6544 || PIPECONN_P (process
)))
6546 struct Lisp_Process
*p
;
6548 p
= XPROCESS (process
);
6549 if (EQ (p
->command
, Qt
)
6551 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6553 FD_SET (p
->infd
, &input_wait_mask
);
6554 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6556 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6557 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6558 #else /* not WINDOWSNT */
6559 tcflush (p
->infd
, TCIFLUSH
);
6560 #endif /* not WINDOWSNT */
6562 pset_command (p
, Qnil
);
6566 process_send_signal (process
, SIGCONT
, current_group
, 0);
6568 error ("No SIGCONT support");
6573 /* Return the integer value of the signal whose abbreviation is ABBR,
6574 or a negative number if there is no such signal. */
6576 abbr_to_signal (char const *name
)
6579 char sigbuf
[20]; /* Large enough for all valid signal abbreviations. */
6581 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6584 for (i
= 0; i
< sizeof sigbuf
; i
++)
6586 sigbuf
[i
] = c_toupper (name
[i
]);
6588 return str2sig (sigbuf
, &signo
) == 0 ? signo
: -1;
6594 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6595 2, 2, "sProcess (name or number): \nnSignal code: ",
6596 doc
: /* Send PROCESS the signal with code SIGCODE.
6597 PROCESS may also be a number specifying the process id of the
6598 process to signal; in this case, the process need not be a child of
6600 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6601 (Lisp_Object process
, Lisp_Object sigcode
)
6606 if (STRINGP (process
))
6608 Lisp_Object tem
= Fget_process (process
);
6611 Lisp_Object process_number
6612 = string_to_number (SSDATA (process
), 10, 1);
6613 if (NUMBERP (process_number
))
6614 tem
= process_number
;
6618 else if (!NUMBERP (process
))
6619 process
= get_process (process
);
6624 if (NUMBERP (process
))
6625 CONS_TO_INTEGER (process
, pid_t
, pid
);
6628 CHECK_PROCESS (process
);
6629 pid
= XPROCESS (process
)->pid
;
6631 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6634 if (INTEGERP (sigcode
))
6636 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
6637 signo
= XINT (sigcode
);
6643 CHECK_SYMBOL (sigcode
);
6644 name
= SSDATA (SYMBOL_NAME (sigcode
));
6646 signo
= abbr_to_signal (name
);
6648 error ("Undefined signal name %s", name
);
6651 return make_number (kill (pid
, signo
));
6654 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6655 doc
: /* Make PROCESS see end-of-file in its input.
6656 EOF comes after any text already sent to it.
6657 PROCESS may be a process, a buffer, the name of a process or buffer, or
6658 nil, indicating the current buffer's process.
6659 If PROCESS is a network connection, or is a process communicating
6660 through a pipe (as opposed to a pty), then you cannot send any more
6661 text to PROCESS after you call this function.
6662 If PROCESS is a serial process, wait until all output written to the
6663 process has been transmitted to the serial port. */)
6664 (Lisp_Object process
)
6667 struct coding_system
*coding
= NULL
;
6670 proc
= get_process (process
);
6672 if (NETCONN_P (proc
))
6673 wait_while_connecting (proc
);
6675 if (DATAGRAM_CONN_P (proc
))
6679 outfd
= XPROCESS (proc
)->outfd
;
6681 coding
= proc_encode_coding_system
[outfd
];
6683 /* Make sure the process is really alive. */
6684 if (XPROCESS (proc
)->raw_status_new
)
6685 update_status (XPROCESS (proc
));
6686 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6687 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6689 if (coding
&& CODING_REQUIRE_FLUSHING (coding
))
6691 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6692 send_process (proc
, "", 0, Qnil
);
6695 if (XPROCESS (proc
)->pty_flag
)
6696 send_process (proc
, "\004", 1, Qnil
);
6697 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6700 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6701 report_file_error ("Failed tcdrain", Qnil
);
6702 #endif /* not WINDOWSNT */
6703 /* Do nothing on Windows because writes are blocking. */
6707 struct Lisp_Process
*p
= XPROCESS (proc
);
6708 int old_outfd
= p
->outfd
;
6711 #ifdef HAVE_SHUTDOWN
6712 /* If this is a network connection, or socketpair is used
6713 for communication with the subprocess, call shutdown to cause EOF.
6714 (In some old system, shutdown to socketpair doesn't work.
6715 Then we just can't win.) */
6717 && (EQ (p
->type
, Qnetwork
) || p
->infd
== old_outfd
))
6718 shutdown (old_outfd
, 1);
6720 close_process_fd (&p
->open_fd
[WRITE_TO_SUBPROCESS
]);
6721 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6723 report_file_error ("Opening null device", Qnil
);
6724 p
->open_fd
[WRITE_TO_SUBPROCESS
] = new_outfd
;
6725 p
->outfd
= new_outfd
;
6727 if (!proc_encode_coding_system
[new_outfd
])
6728 proc_encode_coding_system
[new_outfd
]
6729 = xmalloc (sizeof (struct coding_system
));
6732 *proc_encode_coding_system
[new_outfd
]
6733 = *proc_encode_coding_system
[old_outfd
];
6734 memset (proc_encode_coding_system
[old_outfd
], 0,
6735 sizeof (struct coding_system
));
6738 setup_coding_system (p
->encode_coding_system
,
6739 proc_encode_coding_system
[new_outfd
]);
6744 /* The main Emacs thread records child processes in three places:
6746 - Vprocess_alist, for asynchronous subprocesses, which are child
6747 processes visible to Lisp.
6749 - deleted_pid_list, for child processes invisible to Lisp,
6750 typically because of delete-process. These are recorded so that
6751 the processes can be reaped when they exit, so that the operating
6752 system's process table is not cluttered by zombies.
6754 - the local variable PID in Fcall_process, call_process_cleanup and
6755 call_process_kill, for synchronous subprocesses.
6756 record_unwind_protect is used to make sure this process is not
6757 forgotten: if the user interrupts call-process and the child
6758 process refuses to exit immediately even with two C-g's,
6759 call_process_kill adds PID's contents to deleted_pid_list before
6762 The main Emacs thread invokes waitpid only on child processes that
6763 it creates and that have not been reaped. This avoid races on
6764 platforms such as GTK, where other threads create their own
6765 subprocesses which the main thread should not reap. For example,
6766 if the main thread attempted to reap an already-reaped child, it
6767 might inadvertently reap a GTK-created process that happened to
6768 have the same process ID. */
6770 /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing
6771 its own SIGCHLD handling. On POSIXish systems, glib needs this to
6772 keep track of its own children. GNUstep is similar. */
6774 static void dummy_handler (int sig
) {}
6775 static signal_handler_t
volatile lib_child_handler
;
6777 /* Handle a SIGCHLD signal by looking for known child processes of
6778 Emacs whose status have changed. For each one found, record its
6781 All we do is change the status; we do not run sentinels or print
6782 notifications. That is saved for the next time keyboard input is
6783 done, in order to avoid timing errors.
6785 ** WARNING: this can be called during garbage collection.
6786 Therefore, it must not be fooled by the presence of mark bits in
6789 ** USG WARNING: Although it is not obvious from the documentation
6790 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6791 signal() before executing at least one wait(), otherwise the
6792 handler will be called again, resulting in an infinite loop. The
6793 relevant portion of the documentation reads "SIGCLD signals will be
6794 queued and the signal-catching function will be continually
6795 reentered until the queue is empty". Invoking signal() causes the
6796 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6799 ** Malloc WARNING: This should never call malloc either directly or
6800 indirectly; if it does, that is a bug. */
6803 handle_child_signal (int sig
)
6805 Lisp_Object tail
, proc
;
6807 /* Find the process that signaled us, and record its status. */
6809 /* The process can have been deleted by Fdelete_process, or have
6810 been started asynchronously by Fcall_process. */
6811 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6813 bool all_pids_are_fixnums
6814 = (MOST_NEGATIVE_FIXNUM
<= TYPE_MINIMUM (pid_t
)
6815 && TYPE_MAXIMUM (pid_t
) <= MOST_POSITIVE_FIXNUM
);
6816 Lisp_Object head
= XCAR (tail
);
6821 if (all_pids_are_fixnums
? INTEGERP (xpid
) : NUMBERP (xpid
))
6824 if (INTEGERP (xpid
))
6825 deleted_pid
= XINT (xpid
);
6827 deleted_pid
= XFLOAT_DATA (xpid
);
6828 if (child_status_changed (deleted_pid
, 0, 0))
6830 if (STRINGP (XCDR (head
)))
6831 unlink (SSDATA (XCDR (head
)));
6832 XSETCAR (tail
, Qnil
);
6837 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6838 FOR_EACH_PROCESS (tail
, proc
)
6840 struct Lisp_Process
*p
= XPROCESS (proc
);
6844 && child_status_changed (p
->pid
, &status
, WUNTRACED
| WCONTINUED
))
6846 /* Change the status of the process that was found. */
6847 p
->tick
= ++process_tick
;
6848 p
->raw_status
= status
;
6849 p
->raw_status_new
= 1;
6851 /* If process has terminated, stop waiting for its output. */
6852 if (WIFSIGNALED (status
) || WIFEXITED (status
))
6854 bool clear_desc_flag
= 0;
6857 clear_desc_flag
= 1;
6859 /* clear_desc_flag avoids a compiler bug in Microsoft C. */
6860 if (clear_desc_flag
)
6862 FD_CLR (p
->infd
, &input_wait_mask
);
6863 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6869 lib_child_handler (sig
);
6870 #ifdef NS_IMPL_GNUSTEP
6871 /* NSTask in GNUstep sets its child handler each time it is called.
6872 So we must re-set ours. */
6873 catch_child_signal ();
6878 deliver_child_signal (int sig
)
6880 deliver_process_signal (sig
, handle_child_signal
);
6885 exec_sentinel_error_handler (Lisp_Object error_val
)
6887 cmd_error_internal (error_val
, "error in process sentinel: ");
6889 update_echo_area ();
6890 Fsleep_for (make_number (2), Qnil
);
6895 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6897 Lisp_Object sentinel
, odeactivate
;
6898 struct Lisp_Process
*p
= XPROCESS (proc
);
6899 ptrdiff_t count
= SPECPDL_INDEX ();
6900 bool outer_running_asynch_code
= running_asynch_code
;
6901 int waiting
= waiting_for_user_input_p
;
6903 if (inhibit_sentinels
)
6906 odeactivate
= Vdeactivate_mark
;
6908 Lisp_Object obuffer
, okeymap
;
6909 XSETBUFFER (obuffer
, current_buffer
);
6910 okeymap
= BVAR (current_buffer
, keymap
);
6913 /* There's no good reason to let sentinels change the current
6914 buffer, and many callers of accept-process-output, sit-for, and
6915 friends don't expect current-buffer to be changed from under them. */
6916 record_unwind_current_buffer ();
6918 sentinel
= p
->sentinel
;
6920 /* Inhibit quit so that random quits don't screw up a running filter. */
6921 specbind (Qinhibit_quit
, Qt
);
6922 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6924 /* In case we get recursively called,
6925 and we already saved the match data nonrecursively,
6926 save the same match data in safely recursive fashion. */
6927 if (outer_running_asynch_code
)
6930 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6931 restore_search_regs ();
6932 record_unwind_save_match_data ();
6933 Fset_match_data (tem
, Qt
);
6936 /* For speed, if a search happens within this code,
6937 save the match data in a special nonrecursive fashion. */
6938 running_asynch_code
= 1;
6940 internal_condition_case_1 (read_process_output_call
,
6941 list3 (sentinel
, proc
, reason
),
6942 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6943 exec_sentinel_error_handler
);
6945 /* If we saved the match data nonrecursively, restore it now. */
6946 restore_search_regs ();
6947 running_asynch_code
= outer_running_asynch_code
;
6949 Vdeactivate_mark
= odeactivate
;
6951 /* Restore waiting_for_user_input_p as it was
6952 when we were called, in case the filter clobbered it. */
6953 waiting_for_user_input_p
= waiting
;
6956 if (! EQ (Fcurrent_buffer (), obuffer
)
6957 || ! EQ (current_buffer
->keymap
, okeymap
))
6959 /* But do it only if the caller is actually going to read events.
6960 Otherwise there's no need to make him wake up, and it could
6961 cause trouble (for example it would make sit_for return). */
6962 if (waiting_for_user_input_p
== -1)
6963 record_asynch_buffer_change ();
6965 unbind_to (count
, Qnil
);
6968 /* Report all recent events of a change in process status
6969 (either run the sentinel or output a message).
6970 This is usually done while Emacs is waiting for keyboard input
6971 but can be done at other times.
6973 Return positive if any input was received from WAIT_PROC (or from
6974 any process if WAIT_PROC is null), zero if input was attempted but
6975 none received, and negative if we didn't even try. */
6978 status_notify (struct Lisp_Process
*deleting_process
,
6979 struct Lisp_Process
*wait_proc
)
6982 Lisp_Object tail
, msg
;
6983 int got_some_output
= -1;
6988 /* Set this now, so that if new processes are created by sentinels
6989 that we run, we get called again to handle their status changes. */
6990 update_tick
= process_tick
;
6992 FOR_EACH_PROCESS (tail
, proc
)
6995 register struct Lisp_Process
*p
= XPROCESS (proc
);
6997 if (p
->tick
!= p
->update_tick
)
6999 p
->update_tick
= p
->tick
;
7001 /* If process is still active, read any output that remains. */
7002 while (! EQ (p
->filter
, Qt
)
7003 && ! EQ (p
->status
, Qconnect
)
7004 && ! EQ (p
->status
, Qlisten
)
7005 /* Network or serial process not stopped: */
7006 && ! EQ (p
->command
, Qt
)
7008 && p
!= deleting_process
)
7010 int nread
= read_process_output (proc
, p
->infd
);
7011 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
))
7012 && got_some_output
< nread
)
7013 got_some_output
= nread
;
7018 /* Get the text to use for the message. */
7019 if (p
->raw_status_new
)
7021 msg
= status_message (p
);
7023 /* If process is terminated, deactivate it or delete it. */
7025 if (CONSP (p
->status
))
7026 symbol
= XCAR (p
->status
);
7028 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
7029 || EQ (symbol
, Qclosed
))
7031 if (delete_exited_processes
)
7032 remove_process (proc
);
7034 deactivate_process (proc
);
7037 /* The actions above may have further incremented p->tick.
7038 So set p->update_tick again so that an error in the sentinel will
7039 not cause this code to be run again. */
7040 p
->update_tick
= p
->tick
;
7041 /* Now output the message suitably. */
7042 exec_sentinel (proc
, msg
);
7043 if (BUFFERP (p
->buffer
))
7044 /* In case it uses %s in mode-line-format. */
7045 bset_update_mode_line (XBUFFER (p
->buffer
));
7049 return got_some_output
;
7052 DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel
,
7053 Sinternal_default_process_sentinel
, 2, 2, 0,
7054 doc
: /* Function used as default sentinel for processes.
7055 This inserts a status message into the process's buffer, if there is one. */)
7056 (Lisp_Object proc
, Lisp_Object msg
)
7058 Lisp_Object buffer
, symbol
;
7059 struct Lisp_Process
*p
;
7060 CHECK_PROCESS (proc
);
7061 p
= XPROCESS (proc
);
7065 symbol
= XCAR (symbol
);
7067 if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
7070 struct buffer
*old
= current_buffer
;
7071 ptrdiff_t opoint
, opoint_byte
;
7072 ptrdiff_t before
, before_byte
;
7074 /* Avoid error if buffer is deleted
7075 (probably that's why the process is dead, too). */
7076 if (!BUFFER_LIVE_P (XBUFFER (buffer
)))
7078 Fset_buffer (buffer
);
7080 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
7081 msg
= (code_convert_string_norecord
7082 (msg
, Vlocale_coding_system
, 1));
7085 opoint_byte
= PT_BYTE
;
7086 /* Insert new output into buffer
7087 at the current end-of-output marker,
7088 thus preserving logical ordering of input and output. */
7089 if (XMARKER (p
->mark
)->buffer
)
7090 Fgoto_char (p
->mark
);
7092 SET_PT_BOTH (ZV
, ZV_BYTE
);
7095 before_byte
= PT_BYTE
;
7097 tem
= BVAR (current_buffer
, read_only
);
7098 bset_read_only (current_buffer
, Qnil
);
7099 insert_string ("\nProcess ");
7100 { /* FIXME: temporary kludge. */
7101 Lisp_Object tem2
= p
->name
; Finsert (1, &tem2
); }
7102 insert_string (" ");
7104 bset_read_only (current_buffer
, tem
);
7105 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
7107 if (opoint
>= before
)
7108 SET_PT_BOTH (opoint
+ (PT
- before
),
7109 opoint_byte
+ (PT_BYTE
- before_byte
));
7111 SET_PT_BOTH (opoint
, opoint_byte
);
7113 set_buffer_internal (old
);
7119 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
7120 Sset_process_coding_system
, 1, 3, 0,
7121 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
7122 DECODING will be used to decode subprocess output and ENCODING to
7123 encode subprocess input. */)
7124 (Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
7126 CHECK_PROCESS (process
);
7128 struct Lisp_Process
*p
= XPROCESS (process
);
7130 Fcheck_coding_system (decoding
);
7131 Fcheck_coding_system (encoding
);
7132 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7133 pset_decode_coding_system (p
, decoding
);
7134 pset_encode_coding_system (p
, encoding
);
7136 /* If the sockets haven't been set up yet, the final setup part of
7137 this will be called asynchronously. */
7138 if (p
->infd
< 0 || p
->outfd
< 0)
7141 setup_process_coding_systems (process
);
7146 DEFUN ("process-coding-system",
7147 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7148 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7149 (register Lisp_Object process
)
7151 CHECK_PROCESS (process
);
7152 return Fcons (XPROCESS (process
)->decode_coding_system
,
7153 XPROCESS (process
)->encode_coding_system
);
7156 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7157 Sset_process_filter_multibyte
, 2, 2, 0,
7158 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7159 If FLAG is non-nil, the filter is given multibyte strings.
7160 If FLAG is nil, the filter is given unibyte strings. In this case,
7161 all character code conversion except for end-of-line conversion is
7163 (Lisp_Object process
, Lisp_Object flag
)
7165 CHECK_PROCESS (process
);
7167 struct Lisp_Process
*p
= XPROCESS (process
);
7169 pset_decode_coding_system
7170 (p
, raw_text_coding_system (p
->decode_coding_system
));
7172 /* If the sockets haven't been set up yet, the final setup part of
7173 this will be called asynchronously. */
7174 if (p
->infd
< 0 || p
->outfd
< 0)
7177 setup_process_coding_systems (process
);
7182 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7183 Sprocess_filter_multibyte_p
, 1, 1, 0,
7184 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7185 (Lisp_Object process
)
7187 CHECK_PROCESS (process
);
7188 struct Lisp_Process
*p
= XPROCESS (process
);
7191 struct coding_system
*coding
= proc_decode_coding_system
[p
->infd
];
7192 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7201 add_gpm_wait_descriptor (int desc
)
7203 add_keyboard_wait_descriptor (desc
);
7207 delete_gpm_wait_descriptor (int desc
)
7209 delete_keyboard_wait_descriptor (desc
);
7214 # ifdef USABLE_SIGIO
7216 /* Return true if *MASK has a bit set
7217 that corresponds to one of the keyboard input descriptors. */
7220 keyboard_bit_set (fd_set
*mask
)
7224 for (fd
= 0; fd
<= max_input_desc
; fd
++)
7225 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7226 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7233 #else /* not subprocesses */
7235 /* Defined in msdos.c. */
7236 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
7237 struct timespec
*, void *);
7239 /* Implementation of wait_reading_process_output, assuming that there
7240 are no subprocesses. Used only by the MS-DOS build.
7242 Wait for timeout to elapse and/or keyboard input to be available.
7246 If negative, gobble data immediately available but don't wait for any.
7249 an additional duration to wait, measured in nanoseconds
7250 If TIME_LIMIT is zero, then:
7251 If NSECS == 0, there is no limit.
7252 If NSECS > 0, the timeout consists of NSECS only.
7253 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
7256 0 to ignore keyboard input, or
7257 1 to return when input is available, or
7258 -1 means caller will actually read the input, so don't throw to
7261 see full version for other parameters. We know that wait_proc will
7262 always be NULL, since `subprocesses' isn't defined.
7264 DO_DISPLAY means redisplay should be done to show subprocess
7265 output that arrives.
7267 Return -1 signifying we got no output and did not try. */
7270 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
7272 Lisp_Object wait_for_cell
,
7273 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
7276 struct timespec end_time
, timeout
;
7277 enum { MINIMUM
= -1, TIMEOUT
, INFINITY
} wait
;
7279 if (TYPE_MAXIMUM (time_t) < time_limit
)
7280 time_limit
= TYPE_MAXIMUM (time_t);
7282 if (time_limit
< 0 || nsecs
< 0)
7284 else if (time_limit
> 0 || nsecs
> 0)
7287 end_time
= timespec_add (current_timespec (),
7288 make_timespec (time_limit
, nsecs
));
7293 /* Turn off periodic alarms (in case they are in use)
7294 and then turn off any other atimers,
7295 because the select emulator uses alarms. */
7297 turn_on_atimers (0);
7301 bool timeout_reduced_for_timers
= false;
7302 fd_set waitchannels
;
7305 /* If calling from keyboard input, do not quit
7306 since we want to return C-g as an input character.
7307 Otherwise, do pending quit if requested. */
7311 /* Exit now if the cell we're waiting for became non-nil. */
7312 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7315 /* Compute time from now till when time limit is up. */
7316 /* Exit if already run out. */
7317 if (wait
== TIMEOUT
)
7319 struct timespec now
= current_timespec ();
7320 if (timespec_cmp (end_time
, now
) <= 0)
7322 timeout
= timespec_sub (end_time
, now
);
7325 timeout
= make_timespec (wait
< TIMEOUT
? 0 : 100000, 0);
7327 /* If our caller will not immediately handle keyboard events,
7328 run timer events directly.
7329 (Callers that will immediately read keyboard events
7330 call timer_delay on their own.) */
7331 if (NILP (wait_for_cell
))
7333 struct timespec timer_delay
;
7337 unsigned old_timers_run
= timers_run
;
7338 timer_delay
= timer_check ();
7339 if (timers_run
!= old_timers_run
&& do_display
)
7340 /* We must retry, since a timer may have requeued itself
7341 and that could alter the time delay. */
7342 redisplay_preserve_echo_area (14);
7346 while (!detect_input_pending ());
7348 /* If there is unread keyboard input, also return. */
7350 && requeued_events_pending_p ())
7353 if (timespec_valid_p (timer_delay
))
7355 if (timespec_cmp (timer_delay
, timeout
) < 0)
7357 timeout
= timer_delay
;
7358 timeout_reduced_for_timers
= true;
7363 /* Cause C-g and alarm signals to take immediate action,
7364 and cause input available signals to zero out timeout. */
7366 set_waiting_for_input (&timeout
);
7368 /* If a frame has been newly mapped and needs updating,
7369 reprocess its display stuff. */
7370 if (frame_garbaged
&& do_display
)
7372 clear_waiting_for_input ();
7373 redisplay_preserve_echo_area (15);
7375 set_waiting_for_input (&timeout
);
7378 /* Wait till there is something to do. */
7379 FD_ZERO (&waitchannels
);
7380 if (read_kbd
&& detect_input_pending ())
7384 if (read_kbd
|| !NILP (wait_for_cell
))
7385 FD_SET (0, &waitchannels
);
7386 nfds
= pselect (1, &waitchannels
, NULL
, NULL
, &timeout
, NULL
);
7391 /* Make C-g and alarm signals set flags again. */
7392 clear_waiting_for_input ();
7394 /* If we woke up due to SIGWINCH, actually change size now. */
7395 do_pending_window_change (0);
7397 if (wait
< INFINITY
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7398 /* We waited the full specified time, so return now. */
7403 /* If the system call was interrupted, then go around the
7405 if (xerrno
== EINTR
)
7406 FD_ZERO (&waitchannels
);
7408 report_file_errno ("Failed select", Qnil
, xerrno
);
7411 /* Check for keyboard input. */
7414 && detect_input_pending_run_timers (do_display
))
7416 swallow_events (do_display
);
7417 if (detect_input_pending_run_timers (do_display
))
7421 /* If there is unread keyboard input, also return. */
7423 && requeued_events_pending_p ())
7426 /* If wait_for_cell. check for keyboard input
7427 but don't run any timers.
7428 ??? (It seems wrong to me to check for keyboard
7429 input at all when wait_for_cell, but the code
7430 has been this way since July 1994.
7431 Try changing this after version 19.31.) */
7432 if (! NILP (wait_for_cell
)
7433 && detect_input_pending ())
7435 swallow_events (do_display
);
7436 if (detect_input_pending ())
7440 /* Exit now if the cell we're waiting for became non-nil. */
7441 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7450 #endif /* not subprocesses */
7452 /* The following functions are needed even if async subprocesses are
7453 not supported. Some of them are no-op stubs in that case. */
7457 /* Add FD, which is a descriptor returned by timerfd_create,
7458 to the set of non-keyboard input descriptors. */
7461 add_timer_wait_descriptor (int fd
)
7463 FD_SET (fd
, &input_wait_mask
);
7464 FD_SET (fd
, &non_keyboard_wait_mask
);
7465 FD_SET (fd
, &non_process_wait_mask
);
7466 fd_callback_info
[fd
].func
= timerfd_callback
;
7467 fd_callback_info
[fd
].data
= NULL
;
7468 fd_callback_info
[fd
].condition
|= FOR_READ
;
7469 if (fd
> max_input_desc
)
7470 max_input_desc
= fd
;
7473 #endif /* HAVE_TIMERFD */
7475 /* If program file NAME starts with /: for quoting a magic
7476 name, remove that, preserving the multibyteness of NAME. */
7479 remove_slash_colon (Lisp_Object name
)
7482 ((SBYTES (name
) > 2 && SREF (name
, 0) == '/' && SREF (name
, 1) == ':')
7483 ? make_specified_string (SSDATA (name
) + 2, SCHARS (name
) - 2,
7484 SBYTES (name
) - 2, STRING_MULTIBYTE (name
))
7488 /* Add DESC to the set of keyboard input descriptors. */
7491 add_keyboard_wait_descriptor (int desc
)
7493 #ifdef subprocesses /* Actually means "not MSDOS". */
7494 FD_SET (desc
, &input_wait_mask
);
7495 FD_SET (desc
, &non_process_wait_mask
);
7496 if (desc
> max_input_desc
)
7497 max_input_desc
= desc
;
7501 /* From now on, do not expect DESC to give keyboard input. */
7504 delete_keyboard_wait_descriptor (int desc
)
7507 FD_CLR (desc
, &input_wait_mask
);
7508 FD_CLR (desc
, &non_process_wait_mask
);
7509 delete_input_desc (desc
);
7513 /* Setup coding systems of PROCESS. */
7516 setup_process_coding_systems (Lisp_Object process
)
7519 struct Lisp_Process
*p
= XPROCESS (process
);
7521 int outch
= p
->outfd
;
7522 Lisp_Object coding_system
;
7524 if (inch
< 0 || outch
< 0)
7527 if (!proc_decode_coding_system
[inch
])
7528 proc_decode_coding_system
[inch
] = xmalloc (sizeof (struct coding_system
));
7529 coding_system
= p
->decode_coding_system
;
7530 if (EQ (p
->filter
, Qinternal_default_process_filter
)
7531 && BUFFERP (p
->buffer
))
7533 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
7534 coding_system
= raw_text_coding_system (coding_system
);
7536 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
7538 if (!proc_encode_coding_system
[outch
])
7539 proc_encode_coding_system
[outch
] = xmalloc (sizeof (struct coding_system
));
7540 setup_coding_system (p
->encode_coding_system
,
7541 proc_encode_coding_system
[outch
]);
7545 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7546 doc
: /* Return the (or a) live process associated with BUFFER.
7547 BUFFER may be a buffer or the name of one.
7548 Return nil if all processes associated with BUFFER have been
7549 deleted or killed. */)
7550 (register Lisp_Object buffer
)
7553 register Lisp_Object buf
, tail
, proc
;
7555 if (NILP (buffer
)) return Qnil
;
7556 buf
= Fget_buffer (buffer
);
7557 if (NILP (buf
)) return Qnil
;
7559 FOR_EACH_PROCESS (tail
, proc
)
7560 if (EQ (XPROCESS (proc
)->buffer
, buf
))
7562 #endif /* subprocesses */
7566 DEFUN ("process-inherit-coding-system-flag",
7567 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7569 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7570 If this flag is t, `buffer-file-coding-system' of the buffer
7571 associated with PROCESS will inherit the coding system used to decode
7572 the process output. */)
7573 (register Lisp_Object process
)
7576 CHECK_PROCESS (process
);
7577 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7579 /* Ignore the argument and return the value of
7580 inherit-process-coding-system. */
7581 return inherit_process_coding_system
? Qt
: Qnil
;
7585 /* Kill all processes associated with `buffer'.
7586 If `buffer' is nil, kill all processes. */
7589 kill_buffer_processes (Lisp_Object buffer
)
7592 Lisp_Object tail
, proc
;
7594 FOR_EACH_PROCESS (tail
, proc
)
7595 if (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
))
7597 if (NETCONN_P (proc
) || SERIALCONN_P (proc
) || PIPECONN_P (proc
))
7598 Fdelete_process (proc
);
7599 else if (XPROCESS (proc
)->infd
>= 0)
7600 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7602 #else /* subprocesses */
7603 /* Since we have no subprocesses, this does nothing. */
7604 #endif /* subprocesses */
7607 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7608 Swaiting_for_user_input_p
, 0, 0, 0,
7609 doc
: /* Return non-nil if Emacs is waiting for input from the user.
7610 This is intended for use by asynchronous process output filters and sentinels. */)
7614 return (waiting_for_user_input_p
? Qt
: Qnil
);
7620 /* Stop reading input from keyboard sources. */
7623 hold_keyboard_input (void)
7628 /* Resume reading input from keyboard sources. */
7631 unhold_keyboard_input (void)
7636 /* Return true if keyboard input is on hold, zero otherwise. */
7639 kbd_on_hold_p (void)
7641 return kbd_is_on_hold
;
7645 /* Enumeration of and access to system processes a-la ps(1). */
7647 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7649 doc
: /* Return a list of numerical process IDs of all running processes.
7650 If this functionality is unsupported, return nil.
7652 See `process-attributes' for getting attributes of a process given its ID. */)
7655 return list_system_processes ();
7658 DEFUN ("process-attributes", Fprocess_attributes
,
7659 Sprocess_attributes
, 1, 1, 0,
7660 doc
: /* Return attributes of the process given by its PID, a number.
7662 Value is an alist where each element is a cons cell of the form
7666 If this functionality is unsupported, the value is nil.
7668 See `list-system-processes' for getting a list of all process IDs.
7670 The KEYs of the attributes that this function may return are listed
7671 below, together with the type of the associated VALUE (in parentheses).
7672 Not all platforms support all of these attributes; unsupported
7673 attributes will not appear in the returned alist.
7674 Unless explicitly indicated otherwise, numbers can have either
7675 integer or floating point values.
7677 euid -- Effective user User ID of the process (number)
7678 user -- User name corresponding to euid (string)
7679 egid -- Effective user Group ID of the process (number)
7680 group -- Group name corresponding to egid (string)
7681 comm -- Command name (executable name only) (string)
7682 state -- Process state code, such as "S", "R", or "T" (string)
7683 ppid -- Parent process ID (number)
7684 pgrp -- Process group ID (number)
7685 sess -- Session ID, i.e. process ID of session leader (number)
7686 ttname -- Controlling tty name (string)
7687 tpgid -- ID of foreground process group on the process's tty (number)
7688 minflt -- number of minor page faults (number)
7689 majflt -- number of major page faults (number)
7690 cminflt -- cumulative number of minor page faults (number)
7691 cmajflt -- cumulative number of major page faults (number)
7692 utime -- user time used by the process, in (current-time) format,
7693 which is a list of integers (HIGH LOW USEC PSEC)
7694 stime -- system time used by the process (current-time)
7695 time -- sum of utime and stime (current-time)
7696 cutime -- user time used by the process and its children (current-time)
7697 cstime -- system time used by the process and its children (current-time)
7698 ctime -- sum of cutime and cstime (current-time)
7699 pri -- priority of the process (number)
7700 nice -- nice value of the process (number)
7701 thcount -- process thread count (number)
7702 start -- time the process started (current-time)
7703 vsize -- virtual memory size of the process in KB's (number)
7704 rss -- resident set size of the process in KB's (number)
7705 etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format
7706 pcpu -- percents of CPU time used by the process (floating-point number)
7707 pmem -- percents of total physical memory used by process's resident set
7708 (floating-point number)
7709 args -- command line which invoked the process (string). */)
7712 return system_process_attributes (pid
);
7716 /* Arrange to catch SIGCHLD if this hasn't already been arranged.
7717 Invoke this after init_process_emacs, and after glib and/or GNUstep
7718 futz with the SIGCHLD handler, but before Emacs forks any children.
7719 This function's caller should block SIGCHLD. */
7722 catch_child_signal (void)
7724 struct sigaction action
, old_action
;
7726 emacs_sigaction_init (&action
, deliver_child_signal
);
7727 block_child_signal (&oldset
);
7728 sigaction (SIGCHLD
, &action
, &old_action
);
7729 eassert (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7730 || ! (old_action
.sa_flags
& SA_SIGINFO
));
7732 if (old_action
.sa_handler
!= deliver_child_signal
)
7734 = (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7736 : old_action
.sa_handler
);
7737 unblock_child_signal (&oldset
);
7739 #endif /* subprocesses */
7742 /* This is not called "init_process" because that is the name of a
7743 Mach system call, so it would cause problems on Darwin systems. */
7745 init_process_emacs (int sockfd
)
7750 inhibit_sentinels
= 0;
7753 if (! noninteractive
|| initialized
)
7756 #if defined HAVE_GLIB && !defined WINDOWSNT
7757 /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
7758 this should always fail, but is enough to initialize glib's
7759 private SIGCHLD handler, allowing catch_child_signal to copy
7760 it into lib_child_handler. */
7761 g_source_unref (g_child_watch_source_new (getpid ()));
7763 catch_child_signal ();
7766 FD_ZERO (&input_wait_mask
);
7767 FD_ZERO (&non_keyboard_wait_mask
);
7768 FD_ZERO (&non_process_wait_mask
);
7769 FD_ZERO (&write_mask
);
7770 max_process_desc
= max_input_desc
= -1;
7771 external_sock_fd
= sockfd
;
7772 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7774 FD_ZERO (&connect_wait_mask
);
7775 num_pending_connects
= 0;
7777 process_output_delay_count
= 0;
7778 process_output_skip
= 0;
7780 /* Don't do this, it caused infinite select loops. The display
7781 method should call add_keyboard_wait_descriptor on stdin if it
7784 FD_SET (0, &input_wait_mask
);
7787 Vprocess_alist
= Qnil
;
7788 deleted_pid_list
= Qnil
;
7789 for (i
= 0; i
< FD_SETSIZE
; i
++)
7791 chan_process
[i
] = Qnil
;
7792 proc_buffered_char
[i
] = -1;
7794 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7795 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7796 #ifdef DATAGRAM_SOCKETS
7797 memset (datagram_address
, 0, sizeof datagram_address
);
7800 #if defined (DARWIN_OS)
7801 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7802 processes. As such, we only change the default value. */
7805 char const *release
= (STRINGP (Voperating_system_release
)
7806 ? SSDATA (Voperating_system_release
)
7808 if (!release
|| !release
[0] || (release
[0] < '7' && release
[1] == '.')) {
7809 Vprocess_connection_type
= Qnil
;
7813 #endif /* subprocesses */
7818 syms_of_process (void)
7822 DEFSYM (Qprocessp
, "processp");
7823 DEFSYM (Qrun
, "run");
7824 DEFSYM (Qstop
, "stop");
7825 DEFSYM (Qsignal
, "signal");
7827 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7830 DEFSYM (Qopen
, "open");
7831 DEFSYM (Qclosed
, "closed");
7832 DEFSYM (Qconnect
, "connect");
7833 DEFSYM (Qfailed
, "failed");
7834 DEFSYM (Qlisten
, "listen");
7835 DEFSYM (Qlocal
, "local");
7836 DEFSYM (Qipv4
, "ipv4");
7838 DEFSYM (Qipv6
, "ipv6");
7840 DEFSYM (Qdatagram
, "datagram");
7841 DEFSYM (Qseqpacket
, "seqpacket");
7843 DEFSYM (QCport
, ":port");
7844 DEFSYM (QCspeed
, ":speed");
7845 DEFSYM (QCprocess
, ":process");
7847 DEFSYM (QCbytesize
, ":bytesize");
7848 DEFSYM (QCstopbits
, ":stopbits");
7849 DEFSYM (QCparity
, ":parity");
7850 DEFSYM (Qodd
, "odd");
7851 DEFSYM (Qeven
, "even");
7852 DEFSYM (QCflowcontrol
, ":flowcontrol");
7855 DEFSYM (QCsummary
, ":summary");
7857 DEFSYM (Qreal
, "real");
7858 DEFSYM (Qnetwork
, "network");
7859 DEFSYM (Qserial
, "serial");
7860 DEFSYM (Qpipe
, "pipe");
7861 DEFSYM (QCbuffer
, ":buffer");
7862 DEFSYM (QChost
, ":host");
7863 DEFSYM (QCservice
, ":service");
7864 DEFSYM (QClocal
, ":local");
7865 DEFSYM (QCremote
, ":remote");
7866 DEFSYM (QCcoding
, ":coding");
7867 DEFSYM (QCserver
, ":server");
7868 DEFSYM (QCnowait
, ":nowait");
7869 DEFSYM (QCsentinel
, ":sentinel");
7870 DEFSYM (QCuse_external_socket
, ":use-external-socket");
7871 DEFSYM (QCtls_parameters
, ":tls-parameters");
7872 DEFSYM (Qnsm_verify_connection
, "nsm-verify-connection");
7873 DEFSYM (QClog
, ":log");
7874 DEFSYM (QCnoquery
, ":noquery");
7875 DEFSYM (QCstop
, ":stop");
7876 DEFSYM (QCplist
, ":plist");
7877 DEFSYM (QCcommand
, ":command");
7878 DEFSYM (QCconnection_type
, ":connection-type");
7879 DEFSYM (QCstderr
, ":stderr");
7880 DEFSYM (Qpty
, "pty");
7881 DEFSYM (Qpipe
, "pipe");
7883 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7885 staticpro (&Vprocess_alist
);
7886 staticpro (&deleted_pid_list
);
7888 #endif /* subprocesses */
7890 DEFSYM (QCname
, ":name");
7891 DEFSYM (QCtype
, ":type");
7893 DEFSYM (Qeuid
, "euid");
7894 DEFSYM (Qegid
, "egid");
7895 DEFSYM (Quser
, "user");
7896 DEFSYM (Qgroup
, "group");
7897 DEFSYM (Qcomm
, "comm");
7898 DEFSYM (Qstate
, "state");
7899 DEFSYM (Qppid
, "ppid");
7900 DEFSYM (Qpgrp
, "pgrp");
7901 DEFSYM (Qsess
, "sess");
7902 DEFSYM (Qttname
, "ttname");
7903 DEFSYM (Qtpgid
, "tpgid");
7904 DEFSYM (Qminflt
, "minflt");
7905 DEFSYM (Qmajflt
, "majflt");
7906 DEFSYM (Qcminflt
, "cminflt");
7907 DEFSYM (Qcmajflt
, "cmajflt");
7908 DEFSYM (Qutime
, "utime");
7909 DEFSYM (Qstime
, "stime");
7910 DEFSYM (Qtime
, "time");
7911 DEFSYM (Qcutime
, "cutime");
7912 DEFSYM (Qcstime
, "cstime");
7913 DEFSYM (Qctime
, "ctime");
7915 DEFSYM (Qinternal_default_process_sentinel
,
7916 "internal-default-process-sentinel");
7917 DEFSYM (Qinternal_default_process_filter
,
7918 "internal-default-process-filter");
7920 DEFSYM (Qpri
, "pri");
7921 DEFSYM (Qnice
, "nice");
7922 DEFSYM (Qthcount
, "thcount");
7923 DEFSYM (Qstart
, "start");
7924 DEFSYM (Qvsize
, "vsize");
7925 DEFSYM (Qrss
, "rss");
7926 DEFSYM (Qetime
, "etime");
7927 DEFSYM (Qpcpu
, "pcpu");
7928 DEFSYM (Qpmem
, "pmem");
7929 DEFSYM (Qargs
, "args");
7931 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7932 doc
: /* Non-nil means delete processes immediately when they exit.
7933 A value of nil means don't delete them until `list-processes' is run. */);
7935 delete_exited_processes
= 1;
7938 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7939 doc
: /* Control type of device used to communicate with subprocesses.
7940 Values are nil to use a pipe, or t or `pty' to use a pty.
7941 The value has no effect if the system has no ptys or if all ptys are busy:
7942 then a pipe is used in any case.
7943 The value takes effect when `start-process' is called. */);
7944 Vprocess_connection_type
= Qt
;
7946 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7947 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7948 On some systems, when Emacs reads the output from a subprocess, the output data
7949 is read in very small blocks, potentially resulting in very poor performance.
7950 This behavior can be remedied to some extent by setting this variable to a
7951 non-nil value, as it will automatically delay reading from such processes, to
7952 allow them to produce more output before Emacs tries to read it.
7953 If the value is t, the delay is reset after each write to the process; any other
7954 non-nil value means that the delay is not reset on write.
7955 The variable takes effect when `start-process' is called. */);
7956 Vprocess_adaptive_read_buffering
= Qt
;
7958 defsubr (&Sprocessp
);
7959 defsubr (&Sget_process
);
7960 defsubr (&Sdelete_process
);
7961 defsubr (&Sprocess_status
);
7962 defsubr (&Sprocess_exit_status
);
7963 defsubr (&Sprocess_id
);
7964 defsubr (&Sprocess_name
);
7965 defsubr (&Sprocess_tty_name
);
7966 defsubr (&Sprocess_command
);
7967 defsubr (&Sset_process_buffer
);
7968 defsubr (&Sprocess_buffer
);
7969 defsubr (&Sprocess_mark
);
7970 defsubr (&Sset_process_filter
);
7971 defsubr (&Sprocess_filter
);
7972 defsubr (&Sset_process_sentinel
);
7973 defsubr (&Sprocess_sentinel
);
7974 defsubr (&Sset_process_window_size
);
7975 defsubr (&Sset_process_inherit_coding_system_flag
);
7976 defsubr (&Sset_process_query_on_exit_flag
);
7977 defsubr (&Sprocess_query_on_exit_flag
);
7978 defsubr (&Sprocess_contact
);
7979 defsubr (&Sprocess_plist
);
7980 defsubr (&Sset_process_plist
);
7981 defsubr (&Sprocess_list
);
7982 defsubr (&Smake_process
);
7983 defsubr (&Smake_pipe_process
);
7984 defsubr (&Sserial_process_configure
);
7985 defsubr (&Smake_serial_process
);
7986 defsubr (&Sset_network_process_option
);
7987 defsubr (&Smake_network_process
);
7988 defsubr (&Sformat_network_address
);
7989 defsubr (&Snetwork_interface_list
);
7990 defsubr (&Snetwork_interface_info
);
7991 #ifdef DATAGRAM_SOCKETS
7992 defsubr (&Sprocess_datagram_address
);
7993 defsubr (&Sset_process_datagram_address
);
7995 defsubr (&Saccept_process_output
);
7996 defsubr (&Sprocess_send_region
);
7997 defsubr (&Sprocess_send_string
);
7998 defsubr (&Sinterrupt_process
);
7999 defsubr (&Skill_process
);
8000 defsubr (&Squit_process
);
8001 defsubr (&Sstop_process
);
8002 defsubr (&Scontinue_process
);
8003 defsubr (&Sprocess_running_child_p
);
8004 defsubr (&Sprocess_send_eof
);
8005 defsubr (&Ssignal_process
);
8006 defsubr (&Swaiting_for_user_input_p
);
8007 defsubr (&Sprocess_type
);
8008 defsubr (&Sinternal_default_process_sentinel
);
8009 defsubr (&Sinternal_default_process_filter
);
8010 defsubr (&Sset_process_coding_system
);
8011 defsubr (&Sprocess_coding_system
);
8012 defsubr (&Sset_process_filter_multibyte
);
8013 defsubr (&Sprocess_filter_multibyte_p
);
8016 Lisp_Object subfeatures
= Qnil
;
8017 const struct socket_options
*sopt
;
8019 #define ADD_SUBFEATURE(key, val) \
8020 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
8022 ADD_SUBFEATURE (QCnowait
, Qt
);
8023 #ifdef DATAGRAM_SOCKETS
8024 ADD_SUBFEATURE (QCtype
, Qdatagram
);
8026 #ifdef HAVE_SEQPACKET
8027 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
8029 #ifdef HAVE_LOCAL_SOCKETS
8030 ADD_SUBFEATURE (QCfamily
, Qlocal
);
8032 ADD_SUBFEATURE (QCfamily
, Qipv4
);
8034 ADD_SUBFEATURE (QCfamily
, Qipv6
);
8036 #ifdef HAVE_GETSOCKNAME
8037 ADD_SUBFEATURE (QCservice
, Qt
);
8039 ADD_SUBFEATURE (QCserver
, Qt
);
8041 for (sopt
= socket_options
; sopt
->name
; sopt
++)
8042 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
8044 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
8047 #endif /* subprocesses */
8049 defsubr (&Sget_buffer_process
);
8050 defsubr (&Sprocess_inherit_coding_system_flag
);
8051 defsubr (&Slist_system_processes
);
8052 defsubr (&Sprocess_attributes
);