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 HEIGHT and WIDTH. */)
1138 (Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1140 CHECK_PROCESS (process
);
1142 /* All known platforms store window sizes as 'unsigned short'. */
1143 CHECK_RANGED_INTEGER (height
, 0, USHRT_MAX
);
1144 CHECK_RANGED_INTEGER (width
, 0, USHRT_MAX
);
1146 if (NETCONN_P (process
)
1147 || XPROCESS (process
)->infd
< 0
1148 || (set_window_size (XPROCESS (process
)->infd
,
1149 XINT (height
), XINT (width
))
1156 DEFUN ("set-process-inherit-coding-system-flag",
1157 Fset_process_inherit_coding_system_flag
,
1158 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1159 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1160 If the second argument FLAG is non-nil, then the variable
1161 `buffer-file-coding-system' of the buffer associated with PROCESS
1162 will be bound to the value of the coding system used to decode
1165 This is useful when the coding system specified for the process buffer
1166 leaves either the character code conversion or the end-of-line conversion
1167 unspecified, or if the coding system used to decode the process output
1168 is more appropriate for saving the process buffer.
1170 Binding the variable `inherit-process-coding-system' to non-nil before
1171 starting the process is an alternative way of setting the inherit flag
1172 for the process which will run.
1174 This function returns FLAG. */)
1175 (register Lisp_Object process
, Lisp_Object flag
)
1177 CHECK_PROCESS (process
);
1178 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1182 DEFUN ("set-process-query-on-exit-flag",
1183 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1185 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1186 If the second argument FLAG is non-nil, Emacs will query the user before
1187 exiting or killing a buffer if PROCESS is running. This function
1189 (register Lisp_Object process
, Lisp_Object flag
)
1191 CHECK_PROCESS (process
);
1192 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1196 DEFUN ("process-query-on-exit-flag",
1197 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1199 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1200 (register Lisp_Object process
)
1202 CHECK_PROCESS (process
);
1203 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1206 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1208 doc
: /* Return the contact info of PROCESS; t for a real child.
1209 For a network or serial connection, the value depends on the optional
1210 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1211 SERVICE) for a network connection or (PORT SPEED) for a serial
1212 connection. If KEY is t, the complete contact information for the
1213 connection is returned, else the specific value for the keyword KEY is
1214 returned. See `make-network-process' or `make-serial-process' for a
1216 If PROCESS is a non-blocking network process that hasn't been fully
1217 set up yet, this function will block until socket setup has completed. */)
1218 (Lisp_Object process
, Lisp_Object key
)
1220 Lisp_Object contact
;
1222 CHECK_PROCESS (process
);
1223 contact
= XPROCESS (process
)->childp
;
1225 #ifdef DATAGRAM_SOCKETS
1227 if (NETCONN_P (process
))
1228 wait_for_socket_fds (process
, "process-contact");
1230 if (DATAGRAM_CONN_P (process
)
1231 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1232 contact
= Fplist_put (contact
, QCremote
,
1233 Fprocess_datagram_address (process
));
1236 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
) && !PIPECONN_P (process
))
1239 if (NILP (key
) && NETCONN_P (process
))
1240 return list2 (Fplist_get (contact
, QChost
),
1241 Fplist_get (contact
, QCservice
));
1242 if (NILP (key
) && SERIALCONN_P (process
))
1243 return list2 (Fplist_get (contact
, QCport
),
1244 Fplist_get (contact
, QCspeed
));
1245 /* FIXME: Return a meaningful value (e.g., the child end of the pipe)
1246 if the pipe process is useful for purposes other than receiving
1248 if (NILP (key
) && PIPECONN_P (process
))
1250 return Fplist_get (contact
, key
);
1253 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1255 doc
: /* Return the plist of PROCESS. */)
1256 (register Lisp_Object process
)
1258 CHECK_PROCESS (process
);
1259 return XPROCESS (process
)->plist
;
1262 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1264 doc
: /* Replace the plist of PROCESS with PLIST. Return PLIST. */)
1265 (Lisp_Object process
, Lisp_Object plist
)
1267 CHECK_PROCESS (process
);
1270 pset_plist (XPROCESS (process
), plist
);
1274 #if 0 /* Turned off because we don't currently record this info
1275 in the process. Perhaps add it. */
1276 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1277 doc
: /* Return the connection type of PROCESS.
1278 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1279 a socket connection. */)
1280 (Lisp_Object process
)
1282 return XPROCESS (process
)->type
;
1286 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1287 doc
: /* Return the connection type of PROCESS.
1288 The value is either the symbol `real', `network', or `serial'.
1289 PROCESS may be a process, a buffer, the name of a process or buffer, or
1290 nil, indicating the current buffer's process. */)
1291 (Lisp_Object process
)
1294 proc
= get_process (process
);
1295 return XPROCESS (proc
)->type
;
1298 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1300 doc
: /* Convert network ADDRESS from internal format to a string.
1301 A 4 or 5 element vector represents an IPv4 address (with port number).
1302 An 8 or 9 element vector represents an IPv6 address (with port number).
1303 If optional second argument OMIT-PORT is non-nil, don't include a port
1304 number in the string, even when present in ADDRESS.
1305 Return nil if format of ADDRESS is invalid. */)
1306 (Lisp_Object address
, Lisp_Object omit_port
)
1311 if (STRINGP (address
)) /* AF_LOCAL */
1314 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1316 register struct Lisp_Vector
*p
= XVECTOR (address
);
1317 ptrdiff_t size
= p
->header
.size
;
1318 Lisp_Object args
[10];
1322 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1324 format
= "%d.%d.%d.%d";
1329 format
= "%d.%d.%d.%d:%d";
1332 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1334 format
= "%x:%x:%x:%x:%x:%x:%x:%x";
1339 format
= "[%x:%x:%x:%x:%x:%x:%x:%x]:%d";
1345 AUTO_STRING (format_obj
, format
);
1346 args
[0] = format_obj
;
1348 for (i
= 0; i
< nargs
; i
++)
1350 if (! RANGED_INTEGERP (0, p
->contents
[i
], 65535))
1353 if (nargs
<= 5 /* IPv4 */
1354 && i
< 4 /* host, not port */
1355 && XINT (p
->contents
[i
]) > 255)
1358 args
[i
+ 1] = p
->contents
[i
];
1361 return Fformat (nargs
+ 1, args
);
1364 if (CONSP (address
))
1366 AUTO_STRING (format
, "<Family %d>");
1367 return CALLN (Fformat
, format
, Fcar (address
));
1373 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1374 doc
: /* Return a list of all processes that are Emacs sub-processes. */)
1377 return Fmapcar (Qcdr
, Vprocess_alist
);
1380 /* Starting asynchronous inferior processes. */
1382 static void start_process_unwind (Lisp_Object proc
);
1384 DEFUN ("make-process", Fmake_process
, Smake_process
, 0, MANY
, 0,
1385 doc
: /* Start a program in a subprocess. Return the process object for it.
1387 This is similar to `start-process', but arguments are specified as
1388 keyword/argument pairs. The following arguments are defined:
1390 :name NAME -- NAME is name for process. It is modified if necessary
1393 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
1394 with the process. Process output goes at end of that buffer, unless
1395 you specify an output stream or filter function to handle the output.
1396 BUFFER may be also nil, meaning that this process is not associated
1399 :command COMMAND -- COMMAND is a list starting with the program file
1400 name, followed by strings to give to the program as arguments.
1402 :coding CODING -- If CODING is a symbol, it specifies the coding
1403 system used for both reading and writing for this process. If CODING
1404 is a cons (DECODING . ENCODING), DECODING is used for reading, and
1405 ENCODING is used for writing.
1407 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
1408 the process is running. If BOOL is not given, query before exiting.
1410 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
1411 In the stopped state, a process does not accept incoming data, but you
1412 can send outgoing data. The stopped state is cleared by
1413 `continue-process' and set by `stop-process'.
1415 :connection-type TYPE -- TYPE is control type of device used to
1416 communicate with subprocesses. Values are `pipe' to use a pipe, `pty'
1417 to use a pty, or nil to use the default specified through
1418 `process-connection-type'.
1420 :filter FILTER -- Install FILTER as the process filter.
1422 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
1424 :stderr STDERR -- STDERR is either a buffer or a pipe process attached
1425 to the standard error of subprocess. Specifying this implies
1426 `:connection-type' is set to `pipe'.
1428 usage: (make-process &rest ARGS) */)
1429 (ptrdiff_t nargs
, Lisp_Object
*args
)
1431 Lisp_Object buffer
, name
, command
, program
, proc
, contact
, current_dir
, tem
;
1432 Lisp_Object xstderr
, stderrproc
;
1433 ptrdiff_t count
= SPECPDL_INDEX ();
1439 /* Save arguments for process-contact and clone-process. */
1440 contact
= Flist (nargs
, args
);
1442 buffer
= Fplist_get (contact
, QCbuffer
);
1444 buffer
= Fget_buffer_create (buffer
);
1446 /* Make sure that the child will be able to chdir to the current
1447 buffer's current directory, or its unhandled equivalent. We
1448 can't just have the child check for an error when it does the
1449 chdir, since it's in a vfork. */
1450 current_dir
= encode_current_directory ();
1452 name
= Fplist_get (contact
, QCname
);
1453 CHECK_STRING (name
);
1455 command
= Fplist_get (contact
, QCcommand
);
1456 if (CONSP (command
))
1457 program
= XCAR (command
);
1461 if (!NILP (program
))
1462 CHECK_STRING (program
);
1465 xstderr
= Fplist_get (contact
, QCstderr
);
1466 if (PROCESSP (xstderr
))
1468 if (!PIPECONN_P (xstderr
))
1469 error ("Process is not a pipe process");
1470 stderrproc
= xstderr
;
1472 else if (!NILP (xstderr
))
1474 CHECK_STRING (program
);
1475 stderrproc
= CALLN (Fmake_pipe_process
,
1477 concat2 (name
, build_string (" stderr")),
1479 Fget_buffer_create (xstderr
));
1482 proc
= make_process (name
);
1483 /* If an error occurs and we can't start the process, we want to
1484 remove it from the process list. This means that each error
1485 check in create_process doesn't need to call remove_process
1486 itself; it's all taken care of here. */
1487 record_unwind_protect (start_process_unwind
, proc
);
1489 pset_childp (XPROCESS (proc
), Qt
);
1490 pset_plist (XPROCESS (proc
), Qnil
);
1491 pset_type (XPROCESS (proc
), Qreal
);
1492 pset_buffer (XPROCESS (proc
), buffer
);
1493 pset_sentinel (XPROCESS (proc
), Fplist_get (contact
, QCsentinel
));
1494 pset_filter (XPROCESS (proc
), Fplist_get (contact
, QCfilter
));
1495 pset_command (XPROCESS (proc
), Fcopy_sequence (command
));
1497 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
1498 XPROCESS (proc
)->kill_without_query
= 1;
1499 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
1500 pset_command (XPROCESS (proc
), Qt
);
1502 tem
= Fplist_get (contact
, QCconnection_type
);
1504 XPROCESS (proc
)->pty_flag
= true;
1505 else if (EQ (tem
, Qpipe
))
1506 XPROCESS (proc
)->pty_flag
= false;
1507 else if (NILP (tem
))
1508 XPROCESS (proc
)->pty_flag
= !NILP (Vprocess_connection_type
);
1510 report_file_error ("Unknown connection type", tem
);
1512 if (!NILP (stderrproc
))
1514 pset_stderrproc (XPROCESS (proc
), stderrproc
);
1516 XPROCESS (proc
)->pty_flag
= false;
1520 /* AKA GNUTLS_INITSTAGE(proc). */
1521 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1522 pset_gnutls_cred_type (XPROCESS (proc
), Qnil
);
1525 XPROCESS (proc
)->adaptive_read_buffering
1526 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1527 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1529 /* Make the process marker point into the process buffer (if any). */
1530 if (BUFFERP (buffer
))
1531 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1532 BUF_ZV (XBUFFER (buffer
)),
1533 BUF_ZV_BYTE (XBUFFER (buffer
)));
1536 /* Decide coding systems for communicating with the process. Here
1537 we don't setup the structure coding_system nor pay attention to
1538 unibyte mode. They are done in create_process. */
1540 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1541 Lisp_Object coding_systems
= Qt
;
1542 Lisp_Object val
, *args2
;
1544 tem
= Fplist_get (contact
, QCcoding
);
1552 val
= Vcoding_system_for_read
;
1555 ptrdiff_t nargs2
= 3 + XINT (Flength (command
));
1557 SAFE_ALLOCA_LISP (args2
, nargs2
);
1559 args2
[i
++] = Qstart_process
;
1561 args2
[i
++] = buffer
;
1562 for (tem2
= command
; CONSP (tem2
); tem2
= XCDR (tem2
))
1563 args2
[i
++] = XCAR (tem2
);
1564 if (!NILP (program
))
1565 coding_systems
= Ffind_operation_coding_system (nargs2
, args2
);
1566 if (CONSP (coding_systems
))
1567 val
= XCAR (coding_systems
);
1568 else if (CONSP (Vdefault_process_coding_system
))
1569 val
= XCAR (Vdefault_process_coding_system
);
1571 pset_decode_coding_system (XPROCESS (proc
), val
);
1580 val
= Vcoding_system_for_write
;
1583 if (EQ (coding_systems
, Qt
))
1585 ptrdiff_t nargs2
= 3 + XINT (Flength (command
));
1587 SAFE_ALLOCA_LISP (args2
, nargs2
);
1589 args2
[i
++] = Qstart_process
;
1591 args2
[i
++] = buffer
;
1592 for (tem2
= command
; CONSP (tem2
); tem2
= XCDR (tem2
))
1593 args2
[i
++] = XCAR (tem2
);
1594 if (!NILP (program
))
1595 coding_systems
= Ffind_operation_coding_system (nargs2
, args2
);
1597 if (CONSP (coding_systems
))
1598 val
= XCDR (coding_systems
);
1599 else if (CONSP (Vdefault_process_coding_system
))
1600 val
= XCDR (Vdefault_process_coding_system
);
1602 pset_encode_coding_system (XPROCESS (proc
), val
);
1603 /* Note: At this moment, the above coding system may leave
1604 text-conversion or eol-conversion unspecified. They will be
1605 decided after we read output from the process and decode it by
1606 some coding system, or just before we actually send a text to
1611 pset_decoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1612 XPROCESS (proc
)->decoding_carryover
= 0;
1613 pset_encoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1615 XPROCESS (proc
)->inherit_coding_system_flag
1616 = !(NILP (buffer
) || !inherit_process_coding_system
);
1618 if (!NILP (program
))
1620 Lisp_Object program_args
= XCDR (command
);
1622 /* If program file name is not absolute, search our path for it.
1623 Put the name we will really use in TEM. */
1624 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1625 && !(SCHARS (program
) > 1
1626 && IS_DEVICE_SEP (SREF (program
, 1))))
1629 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
,
1630 make_number (X_OK
), false);
1632 report_file_error ("Searching for program", program
);
1633 tem
= Fexpand_file_name (tem
, Qnil
);
1637 if (!NILP (Ffile_directory_p (program
)))
1638 error ("Specified program for new process is a directory");
1642 /* Remove "/:" from TEM. */
1643 tem
= remove_slash_colon (tem
);
1645 Lisp_Object arg_encoding
= Qnil
;
1647 /* Encode the file name and put it in NEW_ARGV.
1648 That's where the child will use it to execute the program. */
1649 tem
= list1 (ENCODE_FILE (tem
));
1650 ptrdiff_t new_argc
= 1;
1652 /* Here we encode arguments by the coding system used for sending
1653 data to the process. We don't support using different coding
1654 systems for encoding arguments and for encoding data sent to the
1657 for (Lisp_Object tem2
= program_args
; CONSP (tem2
); tem2
= XCDR (tem2
))
1659 Lisp_Object arg
= XCAR (tem2
);
1661 if (STRING_MULTIBYTE (arg
))
1663 if (NILP (arg_encoding
))
1664 arg_encoding
= (complement_process_encoding_system
1665 (XPROCESS (proc
)->encode_coding_system
));
1666 arg
= code_convert_string_norecord (arg
, arg_encoding
, 1);
1668 tem
= Fcons (arg
, tem
);
1672 /* Now that everything is encoded we can collect the strings into
1675 SAFE_NALLOCA (new_argv
, 1, new_argc
+ 1);
1676 new_argv
[new_argc
] = 0;
1678 for (ptrdiff_t i
= new_argc
- 1; i
>= 0; i
--)
1680 new_argv
[i
] = SSDATA (XCAR (tem
));
1684 create_process (proc
, new_argv
, current_dir
);
1690 return unbind_to (count
, proc
);
1693 /* This function is the unwind_protect form for Fstart_process. If
1694 PROC doesn't have its pid set, then we know someone has signaled
1695 an error and the process wasn't started successfully, so we should
1696 remove it from the process list. */
1698 start_process_unwind (Lisp_Object proc
)
1700 if (!PROCESSP (proc
))
1703 /* Was PROC started successfully?
1704 -2 is used for a pty with no process, eg for gdb. */
1705 if (XPROCESS (proc
)->pid
<= 0 && XPROCESS (proc
)->pid
!= -2)
1706 remove_process (proc
);
1709 /* If *FD_ADDR is nonnegative, close it, and mark it as closed. */
1712 close_process_fd (int *fd_addr
)
1722 /* Indexes of file descriptors in open_fds. */
1725 /* The pipe from Emacs to its subprocess. */
1727 WRITE_TO_SUBPROCESS
,
1729 /* The main pipe from the subprocess to Emacs. */
1730 READ_FROM_SUBPROCESS
,
1733 /* The pipe from the subprocess to Emacs that is closed when the
1734 subprocess execs. */
1735 READ_FROM_EXEC_MONITOR
,
1739 verify (PROCESS_OPEN_FDS
== EXEC_MONITOR_OUTPUT
+ 1);
1742 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1744 struct Lisp_Process
*p
= XPROCESS (process
);
1745 int inchannel
, outchannel
;
1748 int forkin
, forkout
, forkerr
= -1;
1750 char pty_name
[PTY_NAME_SIZE
];
1751 Lisp_Object lisp_pty_name
= Qnil
;
1754 inchannel
= outchannel
= -1;
1757 outchannel
= inchannel
= allocate_pty (pty_name
);
1761 p
->open_fd
[READ_FROM_SUBPROCESS
] = inchannel
;
1762 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1763 /* On most USG systems it does not work to open the pty's tty here,
1764 then close it and reopen it in the child. */
1765 /* Don't let this terminal become our controlling terminal
1766 (in case we don't have one). */
1767 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1769 report_file_error ("Opening pty", Qnil
);
1770 p
->open_fd
[SUBPROCESS_STDIN
] = forkin
;
1772 forkin
= forkout
= -1;
1773 #endif /* not USG, or USG_SUBTTY_WORKS */
1775 lisp_pty_name
= build_string (pty_name
);
1779 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
1780 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
1781 report_file_error ("Creating pipe", Qnil
);
1782 forkin
= p
->open_fd
[SUBPROCESS_STDIN
];
1783 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
1784 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
1785 forkout
= p
->open_fd
[SUBPROCESS_STDOUT
];
1787 if (!NILP (p
->stderrproc
))
1789 struct Lisp_Process
*pp
= XPROCESS (p
->stderrproc
);
1791 forkerr
= pp
->open_fd
[SUBPROCESS_STDOUT
];
1793 /* Close unnecessary file descriptors. */
1794 close_process_fd (&pp
->open_fd
[WRITE_TO_SUBPROCESS
]);
1795 close_process_fd (&pp
->open_fd
[SUBPROCESS_STDIN
]);
1800 if (emacs_pipe (p
->open_fd
+ READ_FROM_EXEC_MONITOR
) != 0)
1801 report_file_error ("Creating pipe", Qnil
);
1804 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1805 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1807 /* Record this as an active process, with its channels. */
1808 chan_process
[inchannel
] = process
;
1809 p
->infd
= inchannel
;
1810 p
->outfd
= outchannel
;
1812 /* Previously we recorded the tty descriptor used in the subprocess.
1813 It was only used for getting the foreground tty process, so now
1814 we just reopen the device (see emacs_get_tty_pgrp) as this is
1815 more portable (see USG_SUBTTY_WORKS above). */
1817 p
->pty_flag
= pty_flag
;
1818 pset_status (p
, Qrun
);
1820 if (!EQ (p
->command
, Qt
))
1822 FD_SET (inchannel
, &input_wait_mask
);
1823 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1826 if (inchannel
> max_process_desc
)
1827 max_process_desc
= inchannel
;
1829 /* This may signal an error. */
1830 setup_process_coding_systems (process
);
1833 block_child_signal (&oldset
);
1836 /* vfork, and prevent local vars from being clobbered by the vfork. */
1837 Lisp_Object
volatile current_dir_volatile
= current_dir
;
1838 Lisp_Object
volatile lisp_pty_name_volatile
= lisp_pty_name
;
1839 char **volatile new_argv_volatile
= new_argv
;
1840 int volatile forkin_volatile
= forkin
;
1841 int volatile forkout_volatile
= forkout
;
1842 int volatile forkerr_volatile
= forkerr
;
1843 struct Lisp_Process
*p_volatile
= p
;
1847 current_dir
= current_dir_volatile
;
1848 lisp_pty_name
= lisp_pty_name_volatile
;
1849 new_argv
= new_argv_volatile
;
1850 forkin
= forkin_volatile
;
1851 forkout
= forkout_volatile
;
1852 forkerr
= forkerr_volatile
;
1855 pty_flag
= p
->pty_flag
;
1858 #endif /* not WINDOWSNT */
1860 /* Make the pty be the controlling terminal of the process. */
1862 /* First, disconnect its current controlling terminal. */
1863 /* We tried doing setsid only if pty_flag, but it caused
1864 process_set_signal to fail on SGI when using a pipe. */
1866 /* Make the pty's terminal the controlling terminal. */
1867 if (pty_flag
&& forkin
>= 0)
1870 /* We ignore the return value
1871 because faith@cs.unc.edu says that is necessary on Linux. */
1872 ioctl (forkin
, TIOCSCTTY
, 0);
1875 #if defined (LDISC1)
1876 if (pty_flag
&& forkin
>= 0)
1879 tcgetattr (forkin
, &t
);
1881 if (tcsetattr (forkin
, TCSANOW
, &t
) < 0)
1882 emacs_perror ("create_process/tcsetattr LDISC1");
1885 #if defined (NTTYDISC) && defined (TIOCSETD)
1886 if (pty_flag
&& forkin
>= 0)
1888 /* Use new line discipline. */
1889 int ldisc
= NTTYDISC
;
1890 ioctl (forkin
, TIOCSETD
, &ldisc
);
1895 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1896 can do TIOCSPGRP only to the process's controlling tty. */
1899 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1900 I can't test it since I don't have 4.3. */
1901 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1904 ioctl (j
, TIOCNOTTY
, 0);
1908 #endif /* TIOCNOTTY */
1910 #if !defined (DONT_REOPEN_PTY)
1911 /*** There is a suggestion that this ought to be a
1912 conditional on TIOCSPGRP, or !defined TIOCSCTTY.
1913 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1914 that system does seem to need this code, even though
1915 both TIOCSCTTY is defined. */
1916 /* Now close the pty (if we had it open) and reopen it.
1917 This makes the pty the controlling terminal of the subprocess. */
1921 /* I wonder if emacs_close (emacs_open (SSDATA (lisp_pty_name), ...))
1924 emacs_close (forkin
);
1925 forkout
= forkin
= emacs_open (SSDATA (lisp_pty_name
), O_RDWR
, 0);
1929 emacs_perror (SSDATA (lisp_pty_name
));
1930 _exit (EXIT_CANCELED
);
1934 #endif /* not DONT_REOPEN_PTY */
1936 #ifdef SETUP_SLAVE_PTY
1941 #endif /* SETUP_SLAVE_PTY */
1942 #endif /* HAVE_PTYS */
1944 signal (SIGINT
, SIG_DFL
);
1945 signal (SIGQUIT
, SIG_DFL
);
1947 signal (SIGPROF
, SIG_DFL
);
1950 /* Emacs ignores SIGPIPE, but the child should not. */
1951 signal (SIGPIPE
, SIG_DFL
);
1953 /* Stop blocking SIGCHLD in the child. */
1954 unblock_child_signal (&oldset
);
1957 child_setup_tty (forkout
);
1962 pid
= child_setup (forkin
, forkout
, forkerr
, new_argv
, 1, current_dir
);
1963 #else /* not WINDOWSNT */
1964 child_setup (forkin
, forkout
, forkerr
, new_argv
, 1, current_dir
);
1965 #endif /* not WINDOWSNT */
1968 /* Back in the parent process. */
1970 vfork_errno
= errno
;
1975 /* Stop blocking in the parent. */
1976 unblock_child_signal (&oldset
);
1980 report_file_errno ("Doing vfork", Qnil
, vfork_errno
);
1983 /* vfork succeeded. */
1985 /* Close the pipe ends that the child uses, or the child's pty. */
1986 close_process_fd (&p
->open_fd
[SUBPROCESS_STDIN
]);
1987 close_process_fd (&p
->open_fd
[SUBPROCESS_STDOUT
]);
1990 register_child (pid
, inchannel
);
1991 #endif /* WINDOWSNT */
1993 pset_tty_name (p
, lisp_pty_name
);
1996 /* Wait for child_setup to complete in case that vfork is
1997 actually defined as fork. The descriptor
1998 XPROCESS (proc)->open_fd[EXEC_MONITOR_OUTPUT]
1999 of a pipe is closed at the child side either by close-on-exec
2000 on successful execve or the _exit call in child_setup. */
2004 close_process_fd (&p
->open_fd
[EXEC_MONITOR_OUTPUT
]);
2005 emacs_read (p
->open_fd
[READ_FROM_EXEC_MONITOR
], &dummy
, 1);
2006 close_process_fd (&p
->open_fd
[READ_FROM_EXEC_MONITOR
]);
2009 if (!NILP (p
->stderrproc
))
2011 struct Lisp_Process
*pp
= XPROCESS (p
->stderrproc
);
2012 close_process_fd (&pp
->open_fd
[SUBPROCESS_STDOUT
]);
2018 create_pty (Lisp_Object process
)
2020 struct Lisp_Process
*p
= XPROCESS (process
);
2021 char pty_name
[PTY_NAME_SIZE
];
2022 int pty_fd
= !p
->pty_flag
? -1 : allocate_pty (pty_name
);
2026 p
->open_fd
[SUBPROCESS_STDIN
] = pty_fd
;
2027 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2028 /* On most USG systems it does not work to open the pty's tty here,
2029 then close it and reopen it in the child. */
2030 /* Don't let this terminal become our controlling terminal
2031 (in case we don't have one). */
2032 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2034 report_file_error ("Opening pty", Qnil
);
2035 p
->open_fd
[WRITE_TO_SUBPROCESS
] = forkout
;
2036 #if defined (DONT_REOPEN_PTY)
2037 /* In the case that vfork is defined as fork, the parent process
2038 (Emacs) may send some data before the child process completes
2039 tty options setup. So we setup tty before forking. */
2040 child_setup_tty (forkout
);
2041 #endif /* DONT_REOPEN_PTY */
2042 #endif /* not USG, or USG_SUBTTY_WORKS */
2044 fcntl (pty_fd
, F_SETFL
, O_NONBLOCK
);
2046 /* Record this as an active process, with its channels.
2047 As a result, child_setup will close Emacs's side of the pipes. */
2048 chan_process
[pty_fd
] = process
;
2052 /* Previously we recorded the tty descriptor used in the subprocess.
2053 It was only used for getting the foreground tty process, so now
2054 we just reopen the device (see emacs_get_tty_pgrp) as this is
2055 more portable (see USG_SUBTTY_WORKS above). */
2058 pset_status (p
, Qrun
);
2059 setup_process_coding_systems (process
);
2061 FD_SET (pty_fd
, &input_wait_mask
);
2062 FD_SET (pty_fd
, &non_keyboard_wait_mask
);
2063 if (pty_fd
> max_process_desc
)
2064 max_process_desc
= pty_fd
;
2066 pset_tty_name (p
, build_string (pty_name
));
2072 DEFUN ("make-pipe-process", Fmake_pipe_process
, Smake_pipe_process
,
2074 doc
: /* Create and return a bidirectional pipe process.
2076 In Emacs, pipes are represented by process objects, so input and
2077 output work as for subprocesses, and `delete-process' closes a pipe.
2078 However, a pipe process has no process id, it cannot be signaled,
2079 and the status codes are different from normal processes.
2081 Arguments are specified as keyword/argument pairs. The following
2082 arguments are defined:
2084 :name NAME -- NAME is the name of the process. It is modified if necessary to make it unique.
2086 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2087 with the process. Process output goes at the end of that buffer,
2088 unless you specify an output stream or filter function to handle the
2089 output. If BUFFER is not given, the value of NAME is used.
2091 :coding CODING -- If CODING is a symbol, it specifies the coding
2092 system used for both reading and writing for this process. If CODING
2093 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2094 ENCODING is used for writing.
2096 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2097 the process is running. If BOOL is not given, query before exiting.
2099 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2100 In the stopped state, a pipe process does not accept incoming data,
2101 but you can send outgoing data. The stopped state is cleared by
2102 `continue-process' and set by `stop-process'.
2104 :filter FILTER -- Install FILTER as the process filter.
2106 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2108 usage: (make-pipe-process &rest ARGS) */)
2109 (ptrdiff_t nargs
, Lisp_Object
*args
)
2111 Lisp_Object proc
, contact
;
2112 struct Lisp_Process
*p
;
2113 Lisp_Object name
, buffer
;
2115 ptrdiff_t specpdl_count
;
2116 int inchannel
, outchannel
;
2121 contact
= Flist (nargs
, args
);
2123 name
= Fplist_get (contact
, QCname
);
2124 CHECK_STRING (name
);
2125 proc
= make_process (name
);
2126 specpdl_count
= SPECPDL_INDEX ();
2127 record_unwind_protect (remove_process
, proc
);
2128 p
= XPROCESS (proc
);
2130 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
2131 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
2132 report_file_error ("Creating pipe", Qnil
);
2133 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
2134 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
2136 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2137 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2140 register_aux_fd (inchannel
);
2143 /* Record this as an active process, with its channels. */
2144 chan_process
[inchannel
] = proc
;
2145 p
->infd
= inchannel
;
2146 p
->outfd
= outchannel
;
2148 if (inchannel
> max_process_desc
)
2149 max_process_desc
= inchannel
;
2151 buffer
= Fplist_get (contact
, QCbuffer
);
2154 buffer
= Fget_buffer_create (buffer
);
2155 pset_buffer (p
, buffer
);
2157 pset_childp (p
, contact
);
2158 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2159 pset_type (p
, Qpipe
);
2160 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2161 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2163 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2164 p
->kill_without_query
= 1;
2165 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2166 pset_command (p
, Qt
);
2167 eassert (! p
->pty_flag
);
2169 if (!EQ (p
->command
, Qt
))
2171 FD_SET (inchannel
, &input_wait_mask
);
2172 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2174 p
->adaptive_read_buffering
2175 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
2176 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
2178 /* Make the process marker point into the process buffer (if any). */
2179 if (BUFFERP (buffer
))
2180 set_marker_both (p
->mark
, buffer
,
2181 BUF_ZV (XBUFFER (buffer
)),
2182 BUF_ZV_BYTE (XBUFFER (buffer
)));
2185 /* Setup coding systems for communicating with the network stream. */
2187 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
2188 Lisp_Object coding_systems
= Qt
;
2191 tem
= Fplist_get (contact
, QCcoding
);
2199 else if (!NILP (Vcoding_system_for_read
))
2200 val
= Vcoding_system_for_read
;
2201 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2202 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2203 /* We dare not decode end-of-line format by setting VAL to
2204 Qraw_text, because the existing Emacs Lisp libraries
2205 assume that they receive bare code including a sequence of
2210 if (CONSP (coding_systems
))
2211 val
= XCAR (coding_systems
);
2212 else if (CONSP (Vdefault_process_coding_system
))
2213 val
= XCAR (Vdefault_process_coding_system
);
2217 pset_decode_coding_system (p
, val
);
2225 else if (!NILP (Vcoding_system_for_write
))
2226 val
= Vcoding_system_for_write
;
2227 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
2231 if (CONSP (coding_systems
))
2232 val
= XCDR (coding_systems
);
2233 else if (CONSP (Vdefault_process_coding_system
))
2234 val
= XCDR (Vdefault_process_coding_system
);
2238 pset_encode_coding_system (p
, val
);
2240 /* This may signal an error. */
2241 setup_process_coding_systems (proc
);
2243 specpdl_ptr
= specpdl
+ specpdl_count
;
2249 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2250 The address family of sa is not included in the result. */
2253 conv_sockaddr_to_lisp (struct sockaddr
*sa
, ptrdiff_t len
)
2255 Lisp_Object address
;
2258 struct Lisp_Vector
*p
;
2260 /* Workaround for a bug in getsockname on BSD: Names bound to
2261 sockets in the UNIX domain are inaccessible; getsockname returns
2262 a zero length name. */
2263 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2264 return empty_unibyte_string
;
2266 switch (sa
->sa_family
)
2270 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2271 len
= sizeof (sin
->sin_addr
) + 1;
2272 address
= Fmake_vector (make_number (len
), Qnil
);
2273 p
= XVECTOR (address
);
2274 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2275 cp
= (unsigned char *) &sin
->sin_addr
;
2281 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2282 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2283 len
= sizeof (sin6
->sin6_addr
) / 2 + 1;
2284 address
= Fmake_vector (make_number (len
), Qnil
);
2285 p
= XVECTOR (address
);
2286 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2287 for (i
= 0; i
< len
; i
++)
2288 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2292 #ifdef HAVE_LOCAL_SOCKETS
2295 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2296 ptrdiff_t name_length
= len
- offsetof (struct sockaddr_un
, sun_path
);
2297 /* If the first byte is NUL, the name is a Linux abstract
2298 socket name, and the name can contain embedded NULs. If
2299 it's not, we have a NUL-terminated string. Be careful not
2300 to walk past the end of the object looking for the name
2301 terminator, however. */
2302 if (name_length
> 0 && sockun
->sun_path
[0] != '\0')
2304 const char *terminator
2305 = memchr (sockun
->sun_path
, '\0', name_length
);
2308 name_length
= terminator
- (const char *) sockun
->sun_path
;
2311 return make_unibyte_string (sockun
->sun_path
, name_length
);
2315 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2316 address
= Fcons (make_number (sa
->sa_family
),
2317 Fmake_vector (make_number (len
), Qnil
));
2318 p
= XVECTOR (XCDR (address
));
2319 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2325 p
->contents
[i
++] = make_number (*cp
++);
2331 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2334 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2336 struct Lisp_Vector
*p
;
2338 if (VECTORP (address
))
2340 p
= XVECTOR (address
);
2341 if (p
->header
.size
== 5)
2344 return sizeof (struct sockaddr_in
);
2347 else if (p
->header
.size
== 9)
2349 *familyp
= AF_INET6
;
2350 return sizeof (struct sockaddr_in6
);
2354 #ifdef HAVE_LOCAL_SOCKETS
2355 else if (STRINGP (address
))
2357 *familyp
= AF_LOCAL
;
2358 return sizeof (struct sockaddr_un
);
2361 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2362 && VECTORP (XCDR (address
)))
2364 struct sockaddr
*sa
;
2365 p
= XVECTOR (XCDR (address
));
2366 if (MAX_ALLOCA
- sizeof sa
->sa_family
< p
->header
.size
)
2368 *familyp
= XINT (XCAR (address
));
2369 return p
->header
.size
+ sizeof (sa
->sa_family
);
2374 /* Convert an address object (vector or string) to an internal sockaddr.
2376 The address format has been basically validated by
2377 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2378 it could have come from user data. So if FAMILY is not valid,
2379 we return after zeroing *SA. */
2382 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2384 register struct Lisp_Vector
*p
;
2385 register unsigned char *cp
= NULL
;
2389 memset (sa
, 0, len
);
2391 if (VECTORP (address
))
2393 p
= XVECTOR (address
);
2394 if (family
== AF_INET
)
2396 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2397 len
= sizeof (sin
->sin_addr
) + 1;
2398 hostport
= XINT (p
->contents
[--len
]);
2399 sin
->sin_port
= htons (hostport
);
2400 cp
= (unsigned char *)&sin
->sin_addr
;
2401 sa
->sa_family
= family
;
2404 else if (family
== AF_INET6
)
2406 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2407 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2408 len
= sizeof (sin6
->sin6_addr
) / 2 + 1;
2409 hostport
= XINT (p
->contents
[--len
]);
2410 sin6
->sin6_port
= htons (hostport
);
2411 for (i
= 0; i
< len
; i
++)
2412 if (INTEGERP (p
->contents
[i
]))
2414 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2417 sa
->sa_family
= family
;
2424 else if (STRINGP (address
))
2426 #ifdef HAVE_LOCAL_SOCKETS
2427 if (family
== AF_LOCAL
)
2429 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2430 cp
= SDATA (address
);
2431 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2432 sockun
->sun_path
[i
] = *cp
++;
2433 sa
->sa_family
= family
;
2440 p
= XVECTOR (XCDR (address
));
2441 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2444 for (i
= 0; i
< len
; i
++)
2445 if (INTEGERP (p
->contents
[i
]))
2446 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2449 #ifdef DATAGRAM_SOCKETS
2450 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2452 doc
: /* Get the current datagram address associated with PROCESS.
2453 If PROCESS is a non-blocking network process that hasn't been fully
2454 set up yet, this function will block until socket setup has completed. */)
2455 (Lisp_Object process
)
2459 CHECK_PROCESS (process
);
2461 if (NETCONN_P (process
))
2462 wait_for_socket_fds (process
, "process-datagram-address");
2464 if (!DATAGRAM_CONN_P (process
))
2467 channel
= XPROCESS (process
)->infd
;
2468 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2469 datagram_address
[channel
].len
);
2472 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2474 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2475 Return nil upon error setting address, ADDRESS otherwise.
2477 If PROCESS is a non-blocking network process that hasn't been fully
2478 set up yet, this function will block until socket setup has completed. */)
2479 (Lisp_Object process
, Lisp_Object address
)
2485 CHECK_PROCESS (process
);
2487 if (NETCONN_P (process
))
2488 wait_for_socket_fds (process
, "set-process-datagram-address");
2490 if (!DATAGRAM_CONN_P (process
))
2493 channel
= XPROCESS (process
)->infd
;
2495 len
= get_lisp_to_sockaddr_size (address
, &family
);
2496 if (len
== 0 || datagram_address
[channel
].len
!= len
)
2498 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2504 static const struct socket_options
{
2505 /* The name of this option. Should be lowercase version of option
2506 name without SO_ prefix. */
2508 /* Option level SOL_... */
2510 /* Option number SO_... */
2512 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2513 enum { OPIX_NONE
= 0, OPIX_MISC
= 1, OPIX_REUSEADDR
= 2 } optbit
;
2514 } socket_options
[] =
2516 #ifdef SO_BINDTODEVICE
2517 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2520 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2523 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2526 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2529 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2532 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2535 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2538 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2540 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2543 /* Set option OPT to value VAL on socket S.
2545 Return (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2546 Signals an error if setting a known option fails.
2550 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2553 const struct socket_options
*sopt
;
2558 name
= SSDATA (SYMBOL_NAME (opt
));
2559 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2560 if (strcmp (name
, sopt
->name
) == 0)
2563 switch (sopt
->opttype
)
2568 optval
= NILP (val
) ? 0 : 1;
2569 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2570 &optval
, sizeof (optval
));
2577 if (TYPE_RANGED_INTEGERP (int, val
))
2578 optval
= XINT (val
);
2580 error ("Bad option value for %s", name
);
2581 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2582 &optval
, sizeof (optval
));
2586 #ifdef SO_BINDTODEVICE
2589 char devname
[IFNAMSIZ
+ 1];
2591 /* This is broken, at least in the Linux 2.4 kernel.
2592 To unbind, the arg must be a zero integer, not the empty string.
2593 This should work on all systems. KFS. 2003-09-23. */
2594 memset (devname
, 0, sizeof devname
);
2597 char *arg
= SSDATA (val
);
2598 int len
= min (strlen (arg
), IFNAMSIZ
);
2599 memcpy (devname
, arg
, len
);
2601 else if (!NILP (val
))
2602 error ("Bad option value for %s", name
);
2603 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2612 struct linger linger
;
2615 linger
.l_linger
= 0;
2616 if (TYPE_RANGED_INTEGERP (int, val
))
2617 linger
.l_linger
= XINT (val
);
2619 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2620 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2621 &linger
, sizeof (linger
));
2632 int setsockopt_errno
= errno
;
2633 report_file_errno ("Cannot set network option", list2 (opt
, val
),
2637 return (1 << sopt
->optbit
);
2641 DEFUN ("set-network-process-option",
2642 Fset_network_process_option
, Sset_network_process_option
,
2644 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2645 See `make-network-process' for a list of options and values.
2646 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2647 OPTION is not a supported option, return nil instead; otherwise return t.
2649 If PROCESS is a non-blocking network process that hasn't been fully
2650 set up yet, this function will block until socket setup has completed. */)
2651 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2654 struct Lisp_Process
*p
;
2656 CHECK_PROCESS (process
);
2657 p
= XPROCESS (process
);
2658 if (!NETCONN1_P (p
))
2659 error ("Process is not a network process");
2661 wait_for_socket_fds (process
, "set-network-process-option");
2665 error ("Process is not running");
2667 if (set_socket_option (s
, option
, value
))
2669 pset_childp (p
, Fplist_put (p
->childp
, option
, value
));
2673 if (NILP (no_error
))
2674 error ("Unknown or unsupported option");
2680 DEFUN ("serial-process-configure",
2681 Fserial_process_configure
,
2682 Sserial_process_configure
,
2684 doc
: /* Configure speed, bytesize, etc. of a serial process.
2686 Arguments are specified as keyword/argument pairs. Attributes that
2687 are not given are re-initialized from the process's current
2688 configuration (available via the function `process-contact') or set to
2689 reasonable default values. The following arguments are defined:
2695 -- Any of these arguments can be given to identify the process that is
2696 to be configured. If none of these arguments is given, the current
2697 buffer's process is used.
2699 :speed SPEED -- SPEED is the speed of the serial port in bits per
2700 second, also called baud rate. Any value can be given for SPEED, but
2701 most serial ports work only at a few defined values between 1200 and
2702 115200, with 9600 being the most common value. If SPEED is nil, the
2703 serial port is not configured any further, i.e., all other arguments
2704 are ignored. This may be useful for special serial ports such as
2705 Bluetooth-to-serial converters which can only be configured through AT
2706 commands. A value of nil for SPEED can be used only when passed
2707 through `make-serial-process' or `serial-term'.
2709 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2710 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2712 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2713 `odd' (use odd parity), or the symbol `even' (use even parity). If
2714 PARITY is not given, no parity is used.
2716 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2717 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2718 is not given or nil, 1 stopbit is used.
2720 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2721 flowcontrol to be used, which is either nil (don't use flowcontrol),
2722 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2723 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2724 flowcontrol is used.
2726 `serial-process-configure' is called by `make-serial-process' for the
2727 initial configuration of the serial port.
2731 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2733 \(serial-process-configure
2734 :buffer "COM1" :stopbits 1 :parity \\='odd :flowcontrol \\='hw)
2736 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2738 usage: (serial-process-configure &rest ARGS) */)
2739 (ptrdiff_t nargs
, Lisp_Object
*args
)
2741 struct Lisp_Process
*p
;
2742 Lisp_Object contact
= Qnil
;
2743 Lisp_Object proc
= Qnil
;
2745 contact
= Flist (nargs
, args
);
2747 proc
= Fplist_get (contact
, QCprocess
);
2749 proc
= Fplist_get (contact
, QCname
);
2751 proc
= Fplist_get (contact
, QCbuffer
);
2753 proc
= Fplist_get (contact
, QCport
);
2754 proc
= get_process (proc
);
2755 p
= XPROCESS (proc
);
2756 if (!EQ (p
->type
, Qserial
))
2757 error ("Not a serial process");
2759 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2762 serial_configure (p
, contact
);
2766 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2768 doc
: /* Create and return a serial port process.
2770 In Emacs, serial port connections are represented by process objects,
2771 so input and output work as for subprocesses, and `delete-process'
2772 closes a serial port connection. However, a serial process has no
2773 process id, it cannot be signaled, and the status codes are different
2774 from normal processes.
2776 `make-serial-process' creates a process and a buffer, on which you
2777 probably want to use `process-send-string'. Try \\[serial-term] for
2778 an interactive terminal. See below for examples.
2780 Arguments are specified as keyword/argument pairs. The following
2781 arguments are defined:
2783 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2784 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2785 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2786 the backslashes in strings).
2788 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2789 which this function calls.
2791 :name NAME -- NAME is the name of the process. If NAME is not given,
2792 the value of PORT is used.
2794 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2795 with the process. Process output goes at the end of that buffer,
2796 unless you specify an output stream or filter function to handle the
2797 output. If BUFFER is not given, the value of NAME is used.
2799 :coding CODING -- If CODING is a symbol, it specifies the coding
2800 system used for both reading and writing for this process. If CODING
2801 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2802 ENCODING is used for writing.
2804 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2805 the process is running. If BOOL is not given, query before exiting.
2807 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2808 In the stopped state, a serial process does not accept incoming data,
2809 but you can send outgoing data. The stopped state is cleared by
2810 `continue-process' and set by `stop-process'.
2812 :filter FILTER -- Install FILTER as the process filter.
2814 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2816 :plist PLIST -- Install PLIST as the initial plist of the process.
2822 -- This function calls `serial-process-configure' to handle these
2825 The original argument list, possibly modified by later configuration,
2826 is available via the function `process-contact'.
2830 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2832 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2834 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity \\='odd)
2836 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2838 usage: (make-serial-process &rest ARGS) */)
2839 (ptrdiff_t nargs
, Lisp_Object
*args
)
2842 Lisp_Object proc
, contact
, port
;
2843 struct Lisp_Process
*p
;
2844 Lisp_Object name
, buffer
;
2845 Lisp_Object tem
, val
;
2846 ptrdiff_t specpdl_count
;
2851 contact
= Flist (nargs
, args
);
2853 port
= Fplist_get (contact
, QCport
);
2855 error ("No port specified");
2856 CHECK_STRING (port
);
2858 if (NILP (Fplist_member (contact
, QCspeed
)))
2859 error (":speed not specified");
2860 if (!NILP (Fplist_get (contact
, QCspeed
)))
2861 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2863 name
= Fplist_get (contact
, QCname
);
2866 CHECK_STRING (name
);
2867 proc
= make_process (name
);
2868 specpdl_count
= SPECPDL_INDEX ();
2869 record_unwind_protect (remove_process
, proc
);
2870 p
= XPROCESS (proc
);
2872 fd
= serial_open (port
);
2873 p
->open_fd
[SUBPROCESS_STDIN
] = fd
;
2876 if (fd
> max_process_desc
)
2877 max_process_desc
= fd
;
2878 chan_process
[fd
] = proc
;
2880 buffer
= Fplist_get (contact
, QCbuffer
);
2883 buffer
= Fget_buffer_create (buffer
);
2884 pset_buffer (p
, buffer
);
2886 pset_childp (p
, contact
);
2887 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2888 pset_type (p
, Qserial
);
2889 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2890 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2892 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2893 p
->kill_without_query
= 1;
2894 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2895 pset_command (p
, Qt
);
2896 eassert (! p
->pty_flag
);
2898 if (!EQ (p
->command
, Qt
))
2900 FD_SET (fd
, &input_wait_mask
);
2901 FD_SET (fd
, &non_keyboard_wait_mask
);
2904 if (BUFFERP (buffer
))
2906 set_marker_both (p
->mark
, buffer
,
2907 BUF_ZV (XBUFFER (buffer
)),
2908 BUF_ZV_BYTE (XBUFFER (buffer
)));
2911 tem
= Fplist_member (contact
, QCcoding
);
2912 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2918 val
= XCAR (XCDR (tem
));
2922 else if (!NILP (Vcoding_system_for_read
))
2923 val
= Vcoding_system_for_read
;
2924 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2925 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2927 pset_decode_coding_system (p
, val
);
2932 val
= XCAR (XCDR (tem
));
2936 else if (!NILP (Vcoding_system_for_write
))
2937 val
= Vcoding_system_for_write
;
2938 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2939 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2941 pset_encode_coding_system (p
, val
);
2943 setup_process_coding_systems (proc
);
2944 pset_decoding_buf (p
, empty_unibyte_string
);
2945 p
->decoding_carryover
= 0;
2946 pset_encoding_buf (p
, empty_unibyte_string
);
2947 p
->inherit_coding_system_flag
2948 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2950 Fserial_process_configure (nargs
, args
);
2952 specpdl_ptr
= specpdl
+ specpdl_count
;
2958 set_network_socket_coding_system (Lisp_Object proc
, Lisp_Object host
,
2959 Lisp_Object service
, Lisp_Object name
)
2962 struct Lisp_Process
*p
= XPROCESS (proc
);
2963 Lisp_Object contact
= p
->childp
;
2964 Lisp_Object coding_systems
= Qt
;
2967 tem
= Fplist_member (contact
, QCcoding
);
2968 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2969 tem
= Qnil
; /* No error message (too late!). */
2971 /* Setup coding systems for communicating with the network stream. */
2972 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
2976 val
= XCAR (XCDR (tem
));
2980 else if (!NILP (Vcoding_system_for_read
))
2981 val
= Vcoding_system_for_read
;
2982 else if ((!NILP (p
->buffer
)
2983 && NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
2984 || (NILP (p
->buffer
)
2985 && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2986 /* We dare not decode end-of-line format by setting VAL to
2987 Qraw_text, because the existing Emacs Lisp libraries
2988 assume that they receive bare code including a sequence of
2993 if (NILP (host
) || NILP (service
))
2994 coding_systems
= Qnil
;
2996 coding_systems
= CALLN (Ffind_operation_coding_system
,
2997 Qopen_network_stream
, name
, p
->buffer
,
2999 if (CONSP (coding_systems
))
3000 val
= XCAR (coding_systems
);
3001 else if (CONSP (Vdefault_process_coding_system
))
3002 val
= XCAR (Vdefault_process_coding_system
);
3006 pset_decode_coding_system (p
, val
);
3010 val
= XCAR (XCDR (tem
));
3014 else if (!NILP (Vcoding_system_for_write
))
3015 val
= Vcoding_system_for_write
;
3016 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3020 if (EQ (coding_systems
, Qt
))
3022 if (NILP (host
) || NILP (service
))
3023 coding_systems
= Qnil
;
3025 coding_systems
= CALLN (Ffind_operation_coding_system
,
3026 Qopen_network_stream
, name
, p
->buffer
,
3029 if (CONSP (coding_systems
))
3030 val
= XCDR (coding_systems
);
3031 else if (CONSP (Vdefault_process_coding_system
))
3032 val
= XCDR (Vdefault_process_coding_system
);
3036 pset_encode_coding_system (p
, val
);
3038 pset_decoding_buf (p
, empty_unibyte_string
);
3039 p
->decoding_carryover
= 0;
3040 pset_encoding_buf (p
, empty_unibyte_string
);
3042 p
->inherit_coding_system_flag
3043 = !(!NILP (tem
) || NILP (p
->buffer
) || !inherit_process_coding_system
);
3048 finish_after_tls_connection (Lisp_Object proc
)
3050 struct Lisp_Process
*p
= XPROCESS (proc
);
3051 Lisp_Object contact
= p
->childp
;
3052 Lisp_Object result
= Qt
;
3054 if (!NILP (Ffboundp (Qnsm_verify_connection
)))
3055 result
= call3 (Qnsm_verify_connection
,
3057 Fplist_get (contact
, QChost
),
3058 Fplist_get (contact
, QCservice
));
3062 pset_status (p
, list2 (Qfailed
,
3063 build_string ("The Network Security Manager stopped the connections")));
3064 deactivate_process (proc
);
3068 /* If we cleared the connection wait mask before we did
3069 the TLS setup, then we have to say that the process
3070 is finally "open" here. */
3071 if (! FD_ISSET (p
->outfd
, &connect_wait_mask
))
3073 pset_status (p
, Qrun
);
3074 /* Execute the sentinel here. If we had relied on
3075 status_notify to do it later, it will read input
3076 from the process before calling the sentinel. */
3077 exec_sentinel (proc
, build_string ("open\n"));
3084 connect_network_socket (Lisp_Object proc
, Lisp_Object ip_addresses
,
3085 Lisp_Object use_external_socket_p
)
3087 ptrdiff_t count
= SPECPDL_INDEX ();
3089 int s
= -1, outch
, inch
;
3091 Lisp_Object ip_address
;
3093 struct sockaddr
*sa
= NULL
;
3096 struct Lisp_Process
*p
= XPROCESS (proc
);
3097 Lisp_Object contact
= p
->childp
;
3099 int socket_to_use
= -1;
3101 if (!NILP (use_external_socket_p
))
3103 socket_to_use
= external_sock_fd
;
3105 /* Ensure we don't consume the external socket twice. */
3106 external_sock_fd
= -1;
3109 /* Do this in case we never enter the while-loop below. */
3110 count1
= SPECPDL_INDEX ();
3113 while (!NILP (ip_addresses
))
3115 ip_address
= XCAR (ip_addresses
);
3116 ip_addresses
= XCDR (ip_addresses
);
3122 addrlen
= get_lisp_to_sockaddr_size (ip_address
, &family
);
3125 sa
= xmalloc (addrlen
);
3126 conv_lisp_to_sockaddr (family
, ip_address
, sa
, addrlen
);
3131 s
= socket (family
, p
->socktype
| SOCK_CLOEXEC
, p
->ai_protocol
);
3139 #ifdef DATAGRAM_SOCKETS
3140 if (!p
->is_server
&& p
->socktype
== SOCK_DGRAM
)
3142 #endif /* DATAGRAM_SOCKETS */
3144 if (p
->is_non_blocking_client
)
3146 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3156 /* Make us close S if quit. */
3157 record_unwind_protect_int (close_file_unwind
, s
);
3159 /* Parse network options in the arg list. We simply ignore anything
3160 which isn't a known option (including other keywords). An error
3161 is signaled if setting a known option fails. */
3163 Lisp_Object params
= contact
, key
, val
;
3165 while (!NILP (params
))
3167 key
= XCAR (params
);
3168 params
= XCDR (params
);
3169 val
= XCAR (params
);
3170 params
= XCDR (params
);
3171 optbits
|= set_socket_option (s
, key
, val
);
3177 /* Configure as a server socket. */
3179 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3180 explicit :reuseaddr key to override this. */
3181 #ifdef HAVE_LOCAL_SOCKETS
3182 if (family
!= AF_LOCAL
)
3184 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3187 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3188 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3191 /* If passed a socket descriptor, it should be already bound. */
3192 if (socket_to_use
< 0 && bind (s
, sa
, addrlen
) != 0)
3193 report_file_error ("Cannot bind server socket", Qnil
);
3195 #ifdef HAVE_GETSOCKNAME
3198 struct sockaddr_in sa1
;
3199 socklen_t len1
= sizeof (sa1
);
3200 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3202 Lisp_Object service
;
3203 service
= make_number (ntohs (sa1
.sin_port
));
3204 contact
= Fplist_put (contact
, QCservice
, service
);
3205 /* Save the port number so that we can stash it in
3206 the process object later. */
3207 ((struct sockaddr_in
*)sa
)->sin_port
= sa1
.sin_port
;
3212 if (p
->socktype
!= SOCK_DGRAM
&& listen (s
, p
->backlog
))
3213 report_file_error ("Cannot listen on server socket", Qnil
);
3221 ret
= connect (s
, sa
, addrlen
);
3224 if (ret
== 0 || xerrno
== EISCONN
)
3226 /* The unwind-protect will be discarded afterwards.
3227 Likewise for immediate_quit. */
3231 if (p
->is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3235 if (xerrno
== EINTR
)
3237 /* Unlike most other syscalls connect() cannot be called
3238 again. (That would return EALREADY.) The proper way to
3239 wait for completion is pselect(). */
3247 sc
= pselect (s
+ 1, NULL
, &fdset
, NULL
, NULL
, NULL
);
3253 report_file_error ("Failed select", Qnil
);
3257 len
= sizeof xerrno
;
3258 eassert (FD_ISSET (s
, &fdset
));
3259 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) < 0)
3260 report_file_error ("Failed getsockopt", Qnil
);
3262 report_file_errno ("Failed connect", Qnil
, xerrno
);
3265 #endif /* !WINDOWSNT */
3269 /* Discard the unwind protect closing S. */
3270 specpdl_ptr
= specpdl
+ count1
;
3275 if (xerrno
== EINTR
)
3282 #ifdef DATAGRAM_SOCKETS
3283 if (p
->socktype
== SOCK_DGRAM
)
3285 if (datagram_address
[s
].sa
)
3288 datagram_address
[s
].sa
= xmalloc (addrlen
);
3289 datagram_address
[s
].len
= addrlen
;
3293 memset (datagram_address
[s
].sa
, 0, addrlen
);
3294 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3297 ptrdiff_t rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3298 if (rlen
!= 0 && rfamily
== family
3300 conv_lisp_to_sockaddr (rfamily
, remote
,
3301 datagram_address
[s
].sa
, rlen
);
3305 memcpy (datagram_address
[s
].sa
, sa
, addrlen
);
3309 contact
= Fplist_put (contact
, p
->is_server
? QClocal
: QCremote
,
3310 conv_sockaddr_to_lisp (sa
, addrlen
));
3311 #ifdef HAVE_GETSOCKNAME
3314 struct sockaddr_in sa1
;
3315 socklen_t len1
= sizeof (sa1
);
3316 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3317 contact
= Fplist_put (contact
, QClocal
,
3318 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3327 /* If non-blocking got this far - and failed - assume non-blocking is
3328 not supported after all. This is probably a wrong assumption, but
3329 the normal blocking calls to open-network-stream handles this error
3331 if (p
->is_non_blocking_client
)
3334 report_file_errno ((p
->is_server
3335 ? "make server process failed"
3336 : "make client process failed"),
3343 chan_process
[inch
] = proc
;
3345 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3347 p
= XPROCESS (proc
);
3348 p
->open_fd
[SUBPROCESS_STDIN
] = inch
;
3352 /* Discard the unwind protect for closing S, if any. */
3353 specpdl_ptr
= specpdl
+ count1
;
3355 /* Unwind bind_polling_period and request_sigio. */
3356 unbind_to (count
, Qnil
);
3358 if (p
->is_server
&& p
->socktype
!= SOCK_DGRAM
)
3359 pset_status (p
, Qlisten
);
3361 /* Make the process marker point into the process buffer (if any). */
3362 if (BUFFERP (p
->buffer
))
3363 set_marker_both (p
->mark
, p
->buffer
,
3364 BUF_ZV (XBUFFER (p
->buffer
)),
3365 BUF_ZV_BYTE (XBUFFER (p
->buffer
)));
3367 if (p
->is_non_blocking_client
)
3369 /* We may get here if connect did succeed immediately. However,
3370 in that case, we still need to signal this like a non-blocking
3372 pset_status (p
, Qconnect
);
3373 if (!FD_ISSET (inch
, &connect_wait_mask
))
3375 FD_SET (inch
, &connect_wait_mask
);
3376 FD_SET (inch
, &write_mask
);
3377 num_pending_connects
++;
3381 /* A server may have a client filter setting of Qt, but it must
3382 still listen for incoming connects unless it is stopped. */
3383 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3384 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3386 FD_SET (inch
, &input_wait_mask
);
3387 FD_SET (inch
, &non_keyboard_wait_mask
);
3390 if (inch
> max_process_desc
)
3391 max_process_desc
= inch
;
3393 /* Set up the masks based on the process filter. */
3394 set_process_filter_masks (p
);
3396 setup_process_coding_systems (proc
);
3399 /* Continue the asynchronous connection. */
3400 if (!NILP (p
->gnutls_boot_parameters
))
3402 Lisp_Object boot
, params
= p
->gnutls_boot_parameters
;
3404 boot
= Fgnutls_boot (proc
, XCAR (params
), XCDR (params
));
3405 p
->gnutls_boot_parameters
= Qnil
;
3407 if (p
->gnutls_initstage
== GNUTLS_STAGE_READY
)
3408 /* Run sentinels, etc. */
3409 finish_after_tls_connection (proc
);
3410 else if (p
->gnutls_initstage
!= GNUTLS_STAGE_HANDSHAKE_TRIED
)
3412 deactivate_process (proc
);
3414 pset_status (p
, list2 (Qfailed
,
3415 build_string ("TLS negotiation failed")));
3417 pset_status (p
, list2 (Qfailed
, boot
));
3424 /* Create a network stream/datagram client/server process. Treated
3425 exactly like a normal process when reading and writing. Primary
3426 differences are in status display and process deletion. A network
3427 connection has no PID; you cannot signal it. All you can do is
3428 stop/continue it and deactivate/close it via delete-process. */
3430 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3432 doc
: /* Create and return a network server or client process.
3434 In Emacs, network connections are represented by process objects, so
3435 input and output work as for subprocesses and `delete-process' closes
3436 a network connection. However, a network process has no process id,
3437 it cannot be signaled, and the status codes are different from normal
3440 Arguments are specified as keyword/argument pairs. The following
3441 arguments are defined:
3443 :name NAME -- NAME is name for process. It is modified if necessary
3446 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3447 with the process. Process output goes at end of that buffer, unless
3448 you specify an output stream or filter function to handle the output.
3449 BUFFER may be also nil, meaning that this process is not associated
3452 :host HOST -- HOST is name of the host to connect to, or its IP
3453 address. The symbol `local' specifies the local host. If specified
3454 for a server process, it must be a valid name or address for the local
3455 host, and only clients connecting to that address will be accepted.
3457 :service SERVICE -- SERVICE is name of the service desired, or an
3458 integer specifying a port number to connect to. If SERVICE is t,
3459 a random port number is selected for the server. A port number can
3460 be specified as an integer string, e.g., "80", as well as an integer.
3462 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3463 stream type connection, `datagram' creates a datagram type connection,
3464 `seqpacket' creates a reliable datagram connection.
3466 :family FAMILY -- FAMILY is the address (and protocol) family for the
3467 service specified by HOST and SERVICE. The default (nil) is to use
3468 whatever address family (IPv4 or IPv6) that is defined for the host
3469 and port number specified by HOST and SERVICE. Other address families
3471 local -- for a local (i.e. UNIX) address specified by SERVICE.
3472 ipv4 -- use IPv4 address family only.
3473 ipv6 -- use IPv6 address family only.
3475 :local ADDRESS -- ADDRESS is the local address used for the connection.
3476 This parameter is ignored when opening a client process. When specified
3477 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3479 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3480 connection. This parameter is ignored when opening a stream server
3481 process. For a datagram server process, it specifies the initial
3482 setting of the remote datagram address. When specified for a client
3483 process, the FAMILY, HOST, and SERVICE args are ignored.
3485 The format of ADDRESS depends on the address family:
3486 - An IPv4 address is represented as an vector of integers [A B C D P]
3487 corresponding to numeric IP address A.B.C.D and port number P.
3488 - A local address is represented as a string with the address in the
3489 local address space.
3490 - An "unsupported family" address is represented by a cons (F . AV)
3491 where F is the family number and AV is a vector containing the socket
3492 address data with one element per address data byte. Do not rely on
3493 this format in portable code, as it may depend on implementation
3494 defined constants, data sizes, and data structure alignment.
3496 :coding CODING -- If CODING is a symbol, it specifies the coding
3497 system used for both reading and writing for this process. If CODING
3498 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3499 ENCODING is used for writing.
3501 :nowait BOOL -- If NOWAIT is non-nil for a stream type client
3502 process, return without waiting for the connection to complete;
3503 instead, the sentinel function will be called with second arg matching
3504 "open" (if successful) or "failed" when the connect completes.
3505 Default is to use a blocking connect (i.e. wait) for stream type
3508 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3509 running when Emacs is exited.
3511 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3512 In the stopped state, a server process does not accept new
3513 connections, and a client process does not handle incoming traffic.
3514 The stopped state is cleared by `continue-process' and set by
3517 :filter FILTER -- Install FILTER as the process filter.
3519 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3520 process filter are multibyte, otherwise they are unibyte.
3521 If this keyword is not specified, the strings are multibyte if
3522 the default value of `enable-multibyte-characters' is non-nil.
3524 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3526 :log LOG -- Install LOG as the server process log function. This
3527 function is called when the server accepts a network connection from a
3528 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3529 is the server process, CLIENT is the new process for the connection,
3530 and MESSAGE is a string.
3532 :plist PLIST -- Install PLIST as the new process's initial plist.
3534 :tls-parameters LIST -- is a list that should be supplied if you're
3535 opening a TLS connection. The first element is the TLS type (either
3536 `gnutls-x509pki' or `gnutls-anon'), and the remaining elements should
3537 be a keyword list accepted by gnutls-boot (as returned by
3538 `gnutls-boot-parameters').
3540 :server QLEN -- if QLEN is non-nil, create a server process for the
3541 specified FAMILY, SERVICE, and connection type (stream or datagram).
3542 If QLEN is an integer, it is used as the max. length of the server's
3543 pending connection queue (also known as the backlog); the default
3544 queue length is 5. Default is to create a client process.
3546 The following network options can be specified for this connection:
3548 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3549 :dontroute BOOL -- Only send to directly connected hosts.
3550 :keepalive BOOL -- Send keep-alive messages on network stream.
3551 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3552 :oobinline BOOL -- Place out-of-band data in receive data stream.
3553 :priority INT -- Set protocol defined priority for sent packets.
3554 :reuseaddr BOOL -- Allow reusing a recently used local address
3555 (this is allowed by default for a server process).
3556 :bindtodevice NAME -- bind to interface NAME. Using this may require
3557 special privileges on some systems.
3558 :use-external-socket BOOL -- Use any pre-allocated sockets that have
3559 been passed to Emacs. If Emacs wasn't
3560 passed a socket, this option is silently
3564 Consult the relevant system programmer's manual pages for more
3565 information on using these options.
3568 A server process will listen for and accept connections from clients.
3569 When a client connection is accepted, a new network process is created
3570 for the connection with the following parameters:
3572 - The client's process name is constructed by concatenating the server
3573 process's NAME and a client identification string.
3574 - If the FILTER argument is non-nil, the client process will not get a
3575 separate process buffer; otherwise, the client's process buffer is a newly
3576 created buffer named after the server process's BUFFER name or process
3577 NAME concatenated with the client identification string.
3578 - The connection type and the process filter and sentinel parameters are
3579 inherited from the server process's TYPE, FILTER and SENTINEL.
3580 - The client process's contact info is set according to the client's
3581 addressing information (typically an IP address and a port number).
3582 - The client process's plist is initialized from the server's plist.
3584 Notice that the FILTER and SENTINEL args are never used directly by
3585 the server process. Also, the BUFFER argument is not used directly by
3586 the server process, but via the optional :log function, accepted (and
3587 failed) connections may be logged in the server process's buffer.
3589 The original argument list, modified with the actual connection
3590 information, is available via the `process-contact' function.
3592 usage: (make-network-process &rest ARGS) */)
3593 (ptrdiff_t nargs
, Lisp_Object
*args
)
3596 Lisp_Object contact
;
3597 struct Lisp_Process
*p
;
3598 const char *portstring
;
3599 ptrdiff_t portstringlen ATTRIBUTE_UNUSED
;
3600 char portbuf
[INT_BUFSIZE_BOUND (EMACS_INT
)];
3601 #ifdef HAVE_LOCAL_SOCKETS
3602 struct sockaddr_un address_un
;
3606 Lisp_Object name
, buffer
, host
, service
, address
;
3607 Lisp_Object filter
, sentinel
, use_external_socket_p
;
3608 Lisp_Object ip_addresses
= Qnil
;
3611 int ai_protocol
= 0;
3612 #ifdef HAVE_GETADDRINFO_A
3613 struct gaicb
*dns_request
= NULL
;
3615 ptrdiff_t count
= SPECPDL_INDEX ();
3620 /* Save arguments for process-contact and clone-process. */
3621 contact
= Flist (nargs
, args
);
3624 /* Ensure socket support is loaded if available. */
3625 init_winsock (TRUE
);
3628 /* :type TYPE (nil: stream, datagram */
3629 tem
= Fplist_get (contact
, QCtype
);
3631 socktype
= SOCK_STREAM
;
3632 #ifdef DATAGRAM_SOCKETS
3633 else if (EQ (tem
, Qdatagram
))
3634 socktype
= SOCK_DGRAM
;
3636 #ifdef HAVE_SEQPACKET
3637 else if (EQ (tem
, Qseqpacket
))
3638 socktype
= SOCK_SEQPACKET
;
3641 error ("Unsupported connection type");
3643 name
= Fplist_get (contact
, QCname
);
3644 buffer
= Fplist_get (contact
, QCbuffer
);
3645 filter
= Fplist_get (contact
, QCfilter
);
3646 sentinel
= Fplist_get (contact
, QCsentinel
);
3647 use_external_socket_p
= Fplist_get (contact
, QCuse_external_socket
);
3649 CHECK_STRING (name
);
3651 /* :local ADDRESS or :remote ADDRESS */
3652 tem
= Fplist_get (contact
, QCserver
);
3654 address
= Fplist_get (contact
, QCremote
);
3656 address
= Fplist_get (contact
, QClocal
);
3657 if (!NILP (address
))
3659 host
= service
= Qnil
;
3661 if (!get_lisp_to_sockaddr_size (address
, &family
))
3662 error ("Malformed :address");
3664 ip_addresses
= list1 (address
);
3668 /* :family FAMILY -- nil (for Inet), local, or integer. */
3669 tem
= Fplist_get (contact
, QCfamily
);
3678 #ifdef HAVE_LOCAL_SOCKETS
3679 else if (EQ (tem
, Qlocal
))
3683 else if (EQ (tem
, Qipv6
))
3686 else if (EQ (tem
, Qipv4
))
3688 else if (TYPE_RANGED_INTEGERP (int, tem
))
3689 family
= XINT (tem
);
3691 error ("Unknown address family");
3693 /* :service SERVICE -- string, integer (port number), or t (random port). */
3694 service
= Fplist_get (contact
, QCservice
);
3696 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3697 host
= Fplist_get (contact
, QChost
);
3700 /* The "connection" function gets it bind info from the address we're
3701 given, so use this dummy address if nothing is specified. */
3702 #ifdef HAVE_LOCAL_SOCKETS
3703 if (family
!= AF_LOCAL
)
3705 host
= build_string ("127.0.0.1");
3709 if (EQ (host
, Qlocal
))
3710 /* Depending on setup, "localhost" may map to different IPv4 and/or
3711 IPv6 addresses, so it's better to be explicit (Bug#6781). */
3712 host
= build_string ("127.0.0.1");
3713 CHECK_STRING (host
);
3716 #ifdef HAVE_LOCAL_SOCKETS
3717 if (family
== AF_LOCAL
)
3721 message (":family local ignores the :host property");
3722 contact
= Fplist_put (contact
, QChost
, Qnil
);
3725 CHECK_STRING (service
);
3726 if (sizeof address_un
.sun_path
<= SBYTES (service
))
3727 error ("Service name too long");
3728 ip_addresses
= list1 (service
);
3733 /* Slow down polling to every ten seconds.
3734 Some kernels have a bug which causes retrying connect to fail
3735 after a connect. Polling can interfere with gethostbyname too. */
3736 #ifdef POLL_FOR_INPUT
3737 if (socktype
!= SOCK_DGRAM
)
3739 record_unwind_protect_void (run_all_atimers
);
3740 bind_polling_period (10);
3746 /* SERVICE can either be a string or int.
3747 Convert to a C string for later use by getaddrinfo. */
3748 if (EQ (service
, Qt
))
3753 else if (INTEGERP (service
))
3755 portstring
= portbuf
;
3756 portstringlen
= sprintf (portbuf
, "%"pI
"d", XINT (service
));
3760 CHECK_STRING (service
);
3761 portstring
= SSDATA (service
);
3762 portstringlen
= SBYTES (service
);
3766 #ifdef HAVE_GETADDRINFO_A
3767 if (!NILP (host
) && !NILP (Fplist_get (contact
, QCnowait
)))
3769 ptrdiff_t hostlen
= SBYTES (host
);
3773 struct addrinfo hints
;
3774 char str
[FLEXIBLE_ARRAY_MEMBER
];
3775 } *req
= xmalloc (offsetof (struct req
, str
)
3776 + hostlen
+ 1 + portstringlen
+ 1);
3777 dns_request
= &req
->gaicb
;
3778 dns_request
->ar_name
= req
->str
;
3779 dns_request
->ar_service
= req
->str
+ hostlen
+ 1;
3780 dns_request
->ar_request
= &req
->hints
;
3781 dns_request
->ar_result
= NULL
;
3782 memset (&req
->hints
, 0, sizeof req
->hints
);
3783 req
->hints
.ai_family
= family
;
3784 req
->hints
.ai_socktype
= socktype
;
3785 strcpy (req
->str
, SSDATA (host
));
3786 strcpy (req
->str
+ hostlen
+ 1, portstring
);
3788 int ret
= getaddrinfo_a (GAI_NOWAIT
, &dns_request
, 1, NULL
);
3790 error ("%s/%s getaddrinfo_a error %d", SSDATA (host
), portstring
, ret
);
3794 #endif /* HAVE_GETADDRINFO_A */
3796 /* If we have a host, use getaddrinfo to resolve both host and service.
3797 Otherwise, use getservbyname to lookup the service. */
3801 struct addrinfo
*res
, *lres
;
3807 struct addrinfo hints
;
3808 memset (&hints
, 0, sizeof hints
);
3809 hints
.ai_family
= family
;
3810 hints
.ai_socktype
= socktype
;
3812 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3814 #ifdef HAVE_GAI_STRERROR
3816 synchronize_system_messages_locale ();
3817 char const *str
= gai_strerror (ret
);
3818 if (! NILP (Vlocale_coding_system
))
3819 str
= SSDATA (code_convert_string_norecord
3820 (build_string (str
), Vlocale_coding_system
, 0));
3821 error ("%s/%s %s", SSDATA (host
), portstring
, str
);
3824 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3828 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3830 ip_addresses
= Fcons (conv_sockaddr_to_lisp
3831 (lres
->ai_addr
, lres
->ai_addrlen
),
3833 ai_protocol
= lres
->ai_protocol
;
3836 ip_addresses
= Fnreverse (ip_addresses
);
3843 /* No hostname has been specified (e.g., a local server process). */
3845 if (EQ (service
, Qt
))
3847 else if (INTEGERP (service
))
3848 port
= XINT (service
);
3851 CHECK_STRING (service
);
3854 if (SBYTES (service
) != 0)
3856 /* Allow the service to be a string containing the port number,
3857 because that's allowed if you have getaddrbyname. */
3859 long int lport
= strtol (SSDATA (service
), &service_end
, 10);
3860 if (service_end
== SSDATA (service
) + SBYTES (service
))
3864 struct servent
*svc_info
3865 = getservbyname (SSDATA (service
),
3866 socktype
== SOCK_DGRAM
? "udp" : "tcp");
3868 port
= ntohs (svc_info
->s_port
);
3873 if (! (0 <= port
&& port
< 1 << 16))
3875 AUTO_STRING (unknown_service
, "Unknown service: %s");
3876 xsignal1 (Qerror
, CALLN (Fformat
, unknown_service
, service
));
3882 buffer
= Fget_buffer_create (buffer
);
3883 proc
= make_process (name
);
3884 p
= XPROCESS (proc
);
3885 pset_childp (p
, contact
);
3886 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
3887 pset_type (p
, Qnetwork
);
3889 pset_buffer (p
, buffer
);
3890 pset_sentinel (p
, sentinel
);
3891 pset_filter (p
, filter
);
3892 pset_log (p
, Fplist_get (contact
, QClog
));
3893 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3894 p
->kill_without_query
= 1;
3895 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3896 pset_command (p
, Qt
);
3899 p
->is_non_blocking_client
= false;
3900 p
->is_server
= false;
3902 p
->socktype
= socktype
;
3903 p
->ai_protocol
= ai_protocol
;
3904 #ifdef HAVE_GETADDRINFO_A
3905 p
->dns_request
= NULL
;
3908 tem
= Fplist_get (contact
, QCtls_parameters
);
3910 p
->gnutls_boot_parameters
= tem
;
3913 set_network_socket_coding_system (proc
, service
, host
, name
);
3915 unbind_to (count
, Qnil
);
3918 tem
= Fplist_get (contact
, QCserver
);
3921 /* Don't support network sockets when non-blocking mode is
3922 not available, since a blocked Emacs is not useful. */
3923 p
->is_server
= true;
3924 if (TYPE_RANGED_INTEGERP (int, tem
))
3925 p
->backlog
= XINT (tem
);
3929 if (!p
->is_server
&& socktype
!= SOCK_DGRAM
3930 && !NILP (Fplist_get (contact
, QCnowait
)))
3931 p
->is_non_blocking_client
= true;
3933 #ifdef HAVE_GETADDRINFO_A
3934 /* With async address resolution, the list of addresses is empty, so
3935 postpone connecting to the server. */
3936 if (!p
->is_server
&& NILP (ip_addresses
))
3938 p
->dns_request
= dns_request
;
3939 p
->status
= Qconnect
;
3944 connect_network_socket (proc
, ip_addresses
, use_external_socket_p
);
3949 #ifdef HAVE_NET_IF_H
3953 network_interface_list (void)
3955 struct ifconf ifconf
;
3956 struct ifreq
*ifreq
;
3958 ptrdiff_t buf_size
= 512;
3963 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3966 count
= SPECPDL_INDEX ();
3967 record_unwind_protect_int (close_file_unwind
, s
);
3971 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
3972 ifconf
.ifc_buf
= buf
;
3973 ifconf
.ifc_len
= buf_size
;
3974 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3981 while (ifconf
.ifc_len
== buf_size
);
3983 res
= unbind_to (count
, Qnil
);
3984 ifreq
= ifconf
.ifc_req
;
3985 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
3987 struct ifreq
*ifq
= ifreq
;
3988 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3989 #define SIZEOF_IFREQ(sif) \
3990 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
3991 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
3993 int len
= SIZEOF_IFREQ (ifq
);
3995 int len
= sizeof (*ifreq
);
3997 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3998 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
4000 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
4003 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
4004 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
4005 res
= Fcons (Fcons (build_string (namebuf
),
4006 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
4007 sizeof (struct sockaddr
))),
4014 #endif /* SIOCGIFCONF */
4016 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
4020 const char *flag_sym
;
4023 static const struct ifflag_def ifflag_table
[] = {
4027 #ifdef IFF_BROADCAST
4028 { IFF_BROADCAST
, "broadcast" },
4031 { IFF_DEBUG
, "debug" },
4034 { IFF_LOOPBACK
, "loopback" },
4036 #ifdef IFF_POINTOPOINT
4037 { IFF_POINTOPOINT
, "pointopoint" },
4040 { IFF_RUNNING
, "running" },
4043 { IFF_NOARP
, "noarp" },
4046 { IFF_PROMISC
, "promisc" },
4048 #ifdef IFF_NOTRAILERS
4049 #ifdef NS_IMPL_COCOA
4050 /* Really means smart, notrailers is obsolete. */
4051 { IFF_NOTRAILERS
, "smart" },
4053 { IFF_NOTRAILERS
, "notrailers" },
4057 { IFF_ALLMULTI
, "allmulti" },
4060 { IFF_MASTER
, "master" },
4063 { IFF_SLAVE
, "slave" },
4065 #ifdef IFF_MULTICAST
4066 { IFF_MULTICAST
, "multicast" },
4069 { IFF_PORTSEL
, "portsel" },
4071 #ifdef IFF_AUTOMEDIA
4072 { IFF_AUTOMEDIA
, "automedia" },
4075 { IFF_DYNAMIC
, "dynamic" },
4078 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress. */
4081 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions. */
4084 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit. */
4087 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit. */
4090 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit. */
4096 network_interface_info (Lisp_Object ifname
)
4099 Lisp_Object res
= Qnil
;
4104 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
4105 && defined HAVE_GETIFADDRS && defined LLADDR)
4106 struct ifaddrs
*ifap
;
4109 CHECK_STRING (ifname
);
4111 if (sizeof rq
.ifr_name
<= SBYTES (ifname
))
4112 error ("interface name too long");
4113 lispstpcpy (rq
.ifr_name
, ifname
);
4115 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
4118 count
= SPECPDL_INDEX ();
4119 record_unwind_protect_int (close_file_unwind
, s
);
4122 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
4123 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4125 int flags
= rq
.ifr_flags
;
4126 const struct ifflag_def
*fp
;
4129 /* If flags is smaller than int (i.e. short) it may have the high bit set
4130 due to IFF_MULTICAST. In that case, sign extending it into
4132 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
4133 flags
= (unsigned short) rq
.ifr_flags
;
4136 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4138 if (flags
& fp
->flag_bit
)
4140 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4141 flags
-= fp
->flag_bit
;
4144 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
4148 elt
= Fcons (make_number (fnum
), elt
);
4153 res
= Fcons (elt
, res
);
4156 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
4157 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4159 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4160 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4164 for (n
= 0; n
< 6; n
++)
4165 p
->contents
[n
] = make_number (((unsigned char *)
4166 &rq
.ifr_hwaddr
.sa_data
[0])
4168 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4170 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
4171 if (getifaddrs (&ifap
) != -1)
4173 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4174 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4177 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
4179 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
4180 unsigned char linkaddr
[6];
4183 if (it
->ifa_addr
->sa_family
!= AF_LINK
4184 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
4185 || sdl
->sdl_alen
!= 6)
4188 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
4189 for (n
= 0; n
< 6; n
++)
4190 p
->contents
[n
] = make_number (linkaddr
[n
]);
4192 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
4196 #ifdef HAVE_FREEIFADDRS
4200 #endif /* HAVE_GETIFADDRS && LLADDR */
4202 res
= Fcons (elt
, res
);
4205 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
4206 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4209 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4210 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4212 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4216 res
= Fcons (elt
, res
);
4219 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4220 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4223 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4226 res
= Fcons (elt
, res
);
4229 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
4230 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4233 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4236 res
= Fcons (elt
, res
);
4238 return unbind_to (count
, any
? res
: Qnil
);
4240 #endif /* !SIOCGIFADDR && !SIOCGIFHWADDR && !SIOCGIFFLAGS */
4241 #endif /* defined (HAVE_NET_IF_H) */
4243 DEFUN ("network-interface-list", Fnetwork_interface_list
,
4244 Snetwork_interface_list
, 0, 0, 0,
4245 doc
: /* Return an alist of all network interfaces and their network address.
4246 Each element is a cons, the car of which is a string containing the
4247 interface name, and the cdr is the network address in internal
4248 format; see the description of ADDRESS in `make-network-process'.
4250 If the information is not available, return nil. */)
4253 #if (defined HAVE_NET_IF_H && defined SIOCGIFCONF) || defined WINDOWSNT
4254 return network_interface_list ();
4260 DEFUN ("network-interface-info", Fnetwork_interface_info
,
4261 Snetwork_interface_info
, 1, 1, 0,
4262 doc
: /* Return information about network interface named IFNAME.
4263 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4264 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4265 NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
4266 FLAGS is the current flags of the interface.
4268 Data that is unavailable is returned as nil. */)
4269 (Lisp_Object ifname
)
4271 #if ((defined HAVE_NET_IF_H \
4272 && (defined SIOCGIFADDR || defined SIOCGIFHWADDR \
4273 || defined SIOCGIFFLAGS)) \
4274 || defined WINDOWSNT)
4275 return network_interface_info (ifname
);
4281 /* If program file NAME starts with /: for quoting a magic
4282 name, remove that, preserving the multibyteness of NAME. */
4285 remove_slash_colon (Lisp_Object name
)
4288 ((SBYTES (name
) > 2 && SREF (name
, 0) == '/' && SREF (name
, 1) == ':')
4289 ? make_specified_string (SSDATA (name
) + 2, SCHARS (name
) - 2,
4290 SBYTES (name
) - 2, STRING_MULTIBYTE (name
))
4294 /* Turn off input and output for process PROC. */
4297 deactivate_process (Lisp_Object proc
)
4300 struct Lisp_Process
*p
= XPROCESS (proc
);
4304 /* Delete GnuTLS structures in PROC, if any. */
4305 emacs_gnutls_deinit (proc
);
4306 #endif /* HAVE_GNUTLS */
4308 if (p
->read_output_delay
> 0)
4310 if (--process_output_delay_count
< 0)
4311 process_output_delay_count
= 0;
4312 p
->read_output_delay
= 0;
4313 p
->read_output_skip
= 0;
4316 /* Beware SIGCHLD hereabouts. */
4318 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
4319 close_process_fd (&p
->open_fd
[i
]);
4321 inchannel
= p
->infd
;
4326 #ifdef DATAGRAM_SOCKETS
4327 if (DATAGRAM_CHAN_P (inchannel
))
4329 xfree (datagram_address
[inchannel
].sa
);
4330 datagram_address
[inchannel
].sa
= 0;
4331 datagram_address
[inchannel
].len
= 0;
4334 chan_process
[inchannel
] = Qnil
;
4335 FD_CLR (inchannel
, &input_wait_mask
);
4336 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4337 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4339 FD_CLR (inchannel
, &connect_wait_mask
);
4340 FD_CLR (inchannel
, &write_mask
);
4341 if (--num_pending_connects
< 0)
4344 if (inchannel
== max_process_desc
)
4346 /* We just closed the highest-numbered process input descriptor,
4347 so recompute the highest-numbered one now. */
4351 while (0 <= i
&& NILP (chan_process
[i
]));
4353 max_process_desc
= i
;
4359 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4361 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4362 It is given to their filter functions.
4363 Optional argument PROCESS means do not return until output has been
4364 received from PROCESS.
4366 Optional second argument SECONDS and third argument MILLISEC
4367 specify a timeout; return after that much time even if there is
4368 no subprocess output. If SECONDS is a floating point number,
4369 it specifies a fractional number of seconds to wait.
4370 The MILLISEC argument is obsolete and should be avoided.
4372 If optional fourth argument JUST-THIS-ONE is non-nil, accept output
4373 from PROCESS only, suspending reading output from other processes.
4374 If JUST-THIS-ONE is an integer, don't run any timers either.
4375 Return non-nil if we received any output from PROCESS (or, if PROCESS
4376 is nil, from any process) before the timeout expired. */)
4377 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
4382 if (! NILP (process
))
4383 CHECK_PROCESS (process
);
4385 just_this_one
= Qnil
;
4387 if (!NILP (millisec
))
4388 { /* Obsolete calling convention using integers rather than floats. */
4389 CHECK_NUMBER (millisec
);
4391 seconds
= make_float (XINT (millisec
) / 1000.0);
4394 CHECK_NUMBER (seconds
);
4395 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4402 if (!NILP (seconds
))
4404 if (INTEGERP (seconds
))
4406 if (XINT (seconds
) > 0)
4408 secs
= XINT (seconds
);
4412 else if (FLOATP (seconds
))
4414 if (XFLOAT_DATA (seconds
) > 0)
4416 struct timespec t
= dtotimespec (XFLOAT_DATA (seconds
));
4417 secs
= min (t
.tv_sec
, WAIT_READING_MAX
);
4422 wrong_type_argument (Qnumberp
, seconds
);
4424 else if (! NILP (process
))
4428 ((wait_reading_process_output (secs
, nsecs
, 0, 0,
4430 !NILP (process
) ? XPROCESS (process
) : NULL
,
4431 (NILP (just_this_one
) ? 0
4432 : !INTEGERP (just_this_one
) ? 1 : -1))
4437 /* Accept a connection for server process SERVER on CHANNEL. */
4439 static EMACS_INT connect_counter
= 0;
4442 server_accept_connection (Lisp_Object server
, int channel
)
4444 Lisp_Object proc
, caller
, name
, buffer
;
4445 Lisp_Object contact
, host
, service
;
4446 struct Lisp_Process
*ps
= XPROCESS (server
);
4447 struct Lisp_Process
*p
;
4451 struct sockaddr_in in
;
4453 struct sockaddr_in6 in6
;
4455 #ifdef HAVE_LOCAL_SOCKETS
4456 struct sockaddr_un un
;
4459 socklen_t len
= sizeof saddr
;
4462 s
= accept4 (channel
, &saddr
.sa
, &len
, SOCK_CLOEXEC
);
4471 if (code
== EWOULDBLOCK
)
4475 if (!NILP (ps
->log
))
4476 call3 (ps
->log
, server
, Qnil
,
4477 concat3 (build_string ("accept failed with code"),
4478 Fnumber_to_string (make_number (code
)),
4479 build_string ("\n")));
4483 count
= SPECPDL_INDEX ();
4484 record_unwind_protect_int (close_file_unwind
, s
);
4488 /* Setup a new process to handle the connection. */
4490 /* Generate a unique identification of the caller, and build contact
4491 information for this process. */
4494 switch (saddr
.sa
.sa_family
)
4498 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4500 AUTO_STRING (ipv4_format
, "%d.%d.%d.%d");
4501 host
= CALLN (Fformat
, ipv4_format
,
4502 make_number (ip
[0]), make_number (ip
[1]),
4503 make_number (ip
[2]), make_number (ip
[3]));
4504 service
= make_number (ntohs (saddr
.in
.sin_port
));
4505 AUTO_STRING (caller_format
, " <%s:%d>");
4506 caller
= CALLN (Fformat
, caller_format
, host
, service
);
4513 Lisp_Object args
[9];
4514 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4517 AUTO_STRING (ipv6_format
, "%x:%x:%x:%x:%x:%x:%x:%x");
4518 args
[0] = ipv6_format
;
4519 for (i
= 0; i
< 8; i
++)
4520 args
[i
+ 1] = make_number (ntohs (ip6
[i
]));
4521 host
= CALLMANY (Fformat
, args
);
4522 service
= make_number (ntohs (saddr
.in
.sin_port
));
4523 AUTO_STRING (caller_format
, " <[%s]:%d>");
4524 caller
= CALLN (Fformat
, caller_format
, host
, service
);
4529 #ifdef HAVE_LOCAL_SOCKETS
4533 caller
= Fnumber_to_string (make_number (connect_counter
));
4534 AUTO_STRING (space_less_than
, " <");
4535 AUTO_STRING (greater_than
, ">");
4536 caller
= concat3 (space_less_than
, caller
, greater_than
);
4540 /* Create a new buffer name for this process if it doesn't have a
4541 filter. The new buffer name is based on the buffer name or
4542 process name of the server process concatenated with the caller
4545 if (!(EQ (ps
->filter
, Qinternal_default_process_filter
)
4546 || EQ (ps
->filter
, Qt
)))
4550 buffer
= ps
->buffer
;
4552 buffer
= Fbuffer_name (buffer
);
4557 buffer
= concat2 (buffer
, caller
);
4558 buffer
= Fget_buffer_create (buffer
);
4562 /* Generate a unique name for the new server process. Combine the
4563 server process name with the caller identification. */
4565 name
= concat2 (ps
->name
, caller
);
4566 proc
= make_process (name
);
4568 chan_process
[s
] = proc
;
4570 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4572 p
= XPROCESS (proc
);
4574 /* Build new contact information for this setup. */
4575 contact
= Fcopy_sequence (ps
->childp
);
4576 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4577 contact
= Fplist_put (contact
, QChost
, host
);
4578 if (!NILP (service
))
4579 contact
= Fplist_put (contact
, QCservice
, service
);
4580 contact
= Fplist_put (contact
, QCremote
,
4581 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4582 #ifdef HAVE_GETSOCKNAME
4584 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4585 contact
= Fplist_put (contact
, QClocal
,
4586 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4589 pset_childp (p
, contact
);
4590 pset_plist (p
, Fcopy_sequence (ps
->plist
));
4591 pset_type (p
, Qnetwork
);
4593 pset_buffer (p
, buffer
);
4594 pset_sentinel (p
, ps
->sentinel
);
4595 pset_filter (p
, ps
->filter
);
4596 pset_command (p
, Qnil
);
4599 /* Discard the unwind protect for closing S. */
4600 specpdl_ptr
= specpdl
+ count
;
4602 p
->open_fd
[SUBPROCESS_STDIN
] = s
;
4605 pset_status (p
, Qrun
);
4607 /* Client processes for accepted connections are not stopped initially. */
4608 if (!EQ (p
->filter
, Qt
))
4610 FD_SET (s
, &input_wait_mask
);
4611 FD_SET (s
, &non_keyboard_wait_mask
);
4614 if (s
> max_process_desc
)
4615 max_process_desc
= s
;
4617 /* Setup coding system for new process based on server process.
4618 This seems to be the proper thing to do, as the coding system
4619 of the new process should reflect the settings at the time the
4620 server socket was opened; not the current settings. */
4622 pset_decode_coding_system (p
, ps
->decode_coding_system
);
4623 pset_encode_coding_system (p
, ps
->encode_coding_system
);
4624 setup_process_coding_systems (proc
);
4626 pset_decoding_buf (p
, empty_unibyte_string
);
4627 p
->decoding_carryover
= 0;
4628 pset_encoding_buf (p
, empty_unibyte_string
);
4630 p
->inherit_coding_system_flag
4631 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4633 AUTO_STRING (dash
, "-");
4634 AUTO_STRING (nl
, "\n");
4635 Lisp_Object host_string
= STRINGP (host
) ? host
: dash
;
4637 if (!NILP (ps
->log
))
4639 AUTO_STRING (accept_from
, "accept from ");
4640 call3 (ps
->log
, server
, proc
, concat3 (accept_from
, host_string
, nl
));
4643 AUTO_STRING (open_from
, "open from ");
4644 exec_sentinel (proc
, concat3 (open_from
, host_string
, nl
));
4647 #ifdef HAVE_GETADDRINFO_A
4649 check_for_dns (Lisp_Object proc
)
4651 struct Lisp_Process
*p
= XPROCESS (proc
);
4652 Lisp_Object ip_addresses
= Qnil
;
4655 if (! p
->dns_request
)
4658 int ret
= gai_error (p
->dns_request
);
4659 if (ret
== EAI_INPROGRESS
)
4662 /* We got a response. */
4665 struct addrinfo
*res
;
4667 for (res
= p
->dns_request
->ar_result
; res
; res
= res
->ai_next
)
4669 ip_addresses
= Fcons (conv_sockaddr_to_lisp
4670 (res
->ai_addr
, res
->ai_addrlen
),
4674 ip_addresses
= Fnreverse (ip_addresses
);
4676 /* The DNS lookup failed. */
4677 else if (EQ (p
->status
, Qconnect
))
4679 deactivate_process (proc
);
4680 pset_status (p
, (list2
4682 concat3 (build_string ("Name lookup of "),
4683 build_string (p
->dns_request
->ar_name
),
4684 build_string (" failed")))));
4687 free_dns_request (proc
);
4689 /* This process should not already be connected (or killed). */
4690 if (!EQ (p
->status
, Qconnect
))
4693 return ip_addresses
;
4696 #endif /* HAVE_GETADDRINFO_A */
4699 wait_for_socket_fds (Lisp_Object process
, char const *name
)
4701 while (XPROCESS (process
)->infd
< 0
4702 && EQ (XPROCESS (process
)->status
, Qconnect
))
4704 add_to_log ("Waiting for socket from %s...", build_string (name
));
4705 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4710 wait_while_connecting (Lisp_Object process
)
4712 while (EQ (XPROCESS (process
)->status
, Qconnect
))
4714 add_to_log ("Waiting for connection...");
4715 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4720 wait_for_tls_negotiation (Lisp_Object process
)
4723 while (XPROCESS (process
)->gnutls_p
4724 && XPROCESS (process
)->gnutls_initstage
!= GNUTLS_STAGE_READY
)
4726 add_to_log ("Waiting for TLS...");
4727 wait_reading_process_output (0, 20 * 1000 * 1000, 0, 0, Qnil
, NULL
, 0);
4732 /* This variable is different from waiting_for_input in keyboard.c.
4733 It is used to communicate to a lisp process-filter/sentinel (via the
4734 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4735 for user-input when that process-filter was called.
4736 waiting_for_input cannot be used as that is by definition 0 when
4737 lisp code is being evalled.
4738 This is also used in record_asynch_buffer_change.
4739 For that purpose, this must be 0
4740 when not inside wait_reading_process_output. */
4741 static int waiting_for_user_input_p
;
4744 wait_reading_process_output_unwind (int data
)
4746 waiting_for_user_input_p
= data
;
4749 /* This is here so breakpoints can be put on it. */
4751 wait_reading_process_output_1 (void)
4755 /* Read and dispose of subprocess output while waiting for timeout to
4756 elapse and/or keyboard input to be available.
4760 If negative, gobble data immediately available but don't wait for any.
4763 an additional duration to wait, measured in nanoseconds
4764 If TIME_LIMIT is zero, then:
4765 If NSECS == 0, there is no limit.
4766 If NSECS > 0, the timeout consists of NSECS only.
4767 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
4770 0 to ignore keyboard input, or
4771 1 to return when input is available, or
4772 -1 meaning caller will actually read the input, so don't throw to
4773 the quit handler, or
4775 DO_DISPLAY means redisplay should be done to show subprocess
4776 output that arrives.
4778 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4779 (and gobble terminal input into the buffer if any arrives).
4781 If WAIT_PROC is specified, wait until something arrives from that
4784 If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC
4785 (suspending output from other processes). A negative value
4786 means don't run any timers either.
4788 Return positive if we received input from WAIT_PROC (or from any
4789 process if WAIT_PROC is null), zero if we attempted to receive
4790 input but got none, and negative if we didn't even try. */
4793 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
4795 Lisp_Object wait_for_cell
,
4796 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4806 struct timespec timeout
, end_time
, timer_delay
;
4807 struct timespec got_output_end_time
= invalid_timespec ();
4808 enum { MINIMUM
= -1, TIMEOUT
, INFINITY
} wait
;
4809 int got_some_output
= -1;
4810 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
4811 bool retry_for_async
;
4813 ptrdiff_t count
= SPECPDL_INDEX ();
4815 /* Close to the current time if known, an invalid timespec otherwise. */
4816 struct timespec now
= invalid_timespec ();
4818 FD_ZERO (&Available
);
4821 if (time_limit
== 0 && nsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4822 && !(CONSP (wait_proc
->status
)
4823 && EQ (XCAR (wait_proc
->status
), Qexit
)))
4824 message1 ("Blocking call to accept-process-output with quit inhibited!!");
4826 record_unwind_protect_int (wait_reading_process_output_unwind
,
4827 waiting_for_user_input_p
);
4828 waiting_for_user_input_p
= read_kbd
;
4830 if (TYPE_MAXIMUM (time_t) < time_limit
)
4831 time_limit
= TYPE_MAXIMUM (time_t);
4833 if (time_limit
< 0 || nsecs
< 0)
4835 else if (time_limit
> 0 || nsecs
> 0)
4838 now
= current_timespec ();
4839 end_time
= timespec_add (now
, make_timespec (time_limit
, nsecs
));
4846 bool process_skipped
= false;
4848 /* If calling from keyboard input, do not quit
4849 since we want to return C-g as an input character.
4850 Otherwise, do pending quit if requested. */
4853 else if (pending_signals
)
4854 process_pending_signals ();
4856 /* Exit now if the cell we're waiting for became non-nil. */
4857 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4860 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
4862 Lisp_Object process_list_head
, aproc
;
4863 struct Lisp_Process
*p
;
4865 retry_for_async
= false;
4866 FOR_EACH_PROCESS(process_list_head
, aproc
)
4868 p
= XPROCESS (aproc
);
4870 if (! wait_proc
|| p
== wait_proc
)
4872 #ifdef HAVE_GETADDRINFO_A
4873 /* Check for pending DNS requests. */
4876 Lisp_Object ip_addresses
= check_for_dns (aproc
);
4877 if (!NILP (ip_addresses
) && !EQ (ip_addresses
, Qt
))
4878 connect_network_socket (aproc
, ip_addresses
, Qnil
);
4880 retry_for_async
= true;
4884 /* Continue TLS negotiation. */
4885 if (p
->gnutls_initstage
== GNUTLS_STAGE_HANDSHAKE_TRIED
4886 && p
->is_non_blocking_client
)
4888 gnutls_try_handshake (p
);
4889 p
->gnutls_handshakes_tried
++;
4891 if (p
->gnutls_initstage
== GNUTLS_STAGE_READY
)
4893 gnutls_verify_boot (aproc
, Qnil
);
4894 finish_after_tls_connection (aproc
);
4898 retry_for_async
= true;
4899 if (p
->gnutls_handshakes_tried
4900 > GNUTLS_EMACS_HANDSHAKES_LIMIT
)
4902 deactivate_process (aproc
);
4903 pset_status (p
, list2 (Qfailed
,
4904 build_string ("TLS negotiation failed")));
4912 #endif /* GETADDRINFO_A or GNUTLS */
4914 /* Compute time from now till when time limit is up. */
4915 /* Exit if already run out. */
4916 if (wait
== TIMEOUT
)
4918 if (!timespec_valid_p (now
))
4919 now
= current_timespec ();
4920 if (timespec_cmp (end_time
, now
) <= 0)
4922 timeout
= timespec_sub (end_time
, now
);
4925 timeout
= make_timespec (wait
< TIMEOUT
? 0 : 100000, 0);
4927 /* Normally we run timers here.
4928 But not if wait_for_cell; in those cases,
4929 the wait is supposed to be short,
4930 and those callers cannot handle running arbitrary Lisp code here. */
4931 if (NILP (wait_for_cell
)
4932 && just_wait_proc
>= 0)
4936 unsigned old_timers_run
= timers_run
;
4937 struct buffer
*old_buffer
= current_buffer
;
4938 Lisp_Object old_window
= selected_window
;
4940 timer_delay
= timer_check ();
4942 /* If a timer has run, this might have changed buffers
4943 an alike. Make read_key_sequence aware of that. */
4944 if (timers_run
!= old_timers_run
4945 && (old_buffer
!= current_buffer
4946 || !EQ (old_window
, selected_window
))
4947 && waiting_for_user_input_p
== -1)
4948 record_asynch_buffer_change ();
4950 if (timers_run
!= old_timers_run
&& do_display
)
4951 /* We must retry, since a timer may have requeued itself
4952 and that could alter the time_delay. */
4953 redisplay_preserve_echo_area (9);
4957 while (!detect_input_pending ());
4959 /* If there is unread keyboard input, also return. */
4961 && requeued_events_pending_p ())
4964 /* This is so a breakpoint can be put here. */
4965 if (!timespec_valid_p (timer_delay
))
4966 wait_reading_process_output_1 ();
4969 /* Cause C-g and alarm signals to take immediate action,
4970 and cause input available signals to zero out timeout.
4972 It is important that we do this before checking for process
4973 activity. If we get a SIGCHLD after the explicit checks for
4974 process activity, timeout is the only way we will know. */
4976 set_waiting_for_input (&timeout
);
4978 /* If status of something has changed, and no input is
4979 available, notify the user of the change right away. After
4980 this explicit check, we'll let the SIGCHLD handler zap
4981 timeout to get our attention. */
4982 if (update_tick
!= process_tick
)
4987 if (kbd_on_hold_p ())
4990 Atemp
= input_wait_mask
;
4993 timeout
= make_timespec (0, 0);
4994 if ((pselect (max (max_process_desc
, max_input_desc
) + 1,
4996 (num_pending_connects
> 0 ? &Ctemp
: NULL
),
4997 NULL
, &timeout
, NULL
)
5000 /* It's okay for us to do this and then continue with
5001 the loop, since timeout has already been zeroed out. */
5002 clear_waiting_for_input ();
5003 got_some_output
= status_notify (NULL
, wait_proc
);
5004 if (do_display
) redisplay_preserve_echo_area (13);
5008 /* Don't wait for output from a non-running process. Just
5009 read whatever data has already been received. */
5010 if (wait_proc
&& wait_proc
->raw_status_new
)
5011 update_status (wait_proc
);
5013 && ! EQ (wait_proc
->status
, Qrun
)
5014 && ! EQ (wait_proc
->status
, Qconnect
))
5016 bool read_some_bytes
= false;
5018 clear_waiting_for_input ();
5020 /* If data can be read from the process, do so until exhausted. */
5021 if (wait_proc
->infd
>= 0)
5023 XSETPROCESS (proc
, wait_proc
);
5027 int nread
= read_process_output (proc
, wait_proc
->infd
);
5030 if (errno
== EIO
|| errno
== EAGAIN
)
5033 if (errno
== EWOULDBLOCK
)
5039 if (got_some_output
< nread
)
5040 got_some_output
= nread
;
5043 read_some_bytes
= true;
5048 if (read_some_bytes
&& do_display
)
5049 redisplay_preserve_echo_area (10);
5054 /* Wait till there is something to do. */
5056 if (wait_proc
&& just_wait_proc
)
5058 if (wait_proc
->infd
< 0) /* Terminated. */
5060 FD_SET (wait_proc
->infd
, &Available
);
5064 else if (!NILP (wait_for_cell
))
5066 Available
= non_process_wait_mask
;
5073 Available
= non_keyboard_wait_mask
;
5075 Available
= input_wait_mask
;
5076 Writeok
= write_mask
;
5077 check_delay
= wait_proc
? 0 : process_output_delay_count
;
5081 /* If frame size has changed or the window is newly mapped,
5082 redisplay now, before we start to wait. There is a race
5083 condition here; if a SIGIO arrives between now and the select
5084 and indicates that a frame is trashed, the select may block
5085 displaying a trashed screen. */
5086 if (frame_garbaged
&& do_display
)
5088 clear_waiting_for_input ();
5089 redisplay_preserve_echo_area (11);
5091 set_waiting_for_input (&timeout
);
5094 /* Skip the `select' call if input is available and we're
5095 waiting for keyboard input or a cell change (which can be
5096 triggered by processing X events). In the latter case, set
5097 nfds to 1 to avoid breaking the loop. */
5099 if ((read_kbd
|| !NILP (wait_for_cell
))
5100 && detect_input_pending ())
5102 nfds
= read_kbd
? 0 : 1;
5104 FD_ZERO (&Available
);
5108 /* Set the timeout for adaptive read buffering if any
5109 process has non-zero read_output_skip and non-zero
5110 read_output_delay, and we are not reading output for a
5111 specific process. It is not executed if
5112 Vprocess_adaptive_read_buffering is nil. */
5113 if (process_output_skip
&& check_delay
> 0)
5115 int adaptive_nsecs
= timeout
.tv_nsec
;
5116 if (timeout
.tv_sec
> 0 || adaptive_nsecs
> READ_OUTPUT_DELAY_MAX
)
5117 adaptive_nsecs
= READ_OUTPUT_DELAY_MAX
;
5118 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
5120 proc
= chan_process
[channel
];
5123 /* Find minimum non-zero read_output_delay among the
5124 processes with non-zero read_output_skip. */
5125 if (XPROCESS (proc
)->read_output_delay
> 0)
5128 if (!XPROCESS (proc
)->read_output_skip
)
5130 FD_CLR (channel
, &Available
);
5131 process_skipped
= true;
5132 XPROCESS (proc
)->read_output_skip
= 0;
5133 if (XPROCESS (proc
)->read_output_delay
< adaptive_nsecs
)
5134 adaptive_nsecs
= XPROCESS (proc
)->read_output_delay
;
5137 timeout
= make_timespec (0, adaptive_nsecs
);
5138 process_output_skip
= 0;
5141 /* If we've got some output and haven't limited our timeout
5142 with adaptive read buffering, limit it. */
5143 if (got_some_output
> 0 && !process_skipped
5145 || timeout
.tv_nsec
> READ_OUTPUT_DELAY_INCREMENT
))
5146 timeout
= make_timespec (0, READ_OUTPUT_DELAY_INCREMENT
);
5149 if (NILP (wait_for_cell
) && just_wait_proc
>= 0
5150 && timespec_valid_p (timer_delay
)
5151 && timespec_cmp (timer_delay
, timeout
) < 0)
5153 if (!timespec_valid_p (now
))
5154 now
= current_timespec ();
5155 struct timespec timeout_abs
= timespec_add (now
, timeout
);
5156 if (!timespec_valid_p (got_output_end_time
)
5157 || timespec_cmp (timeout_abs
, got_output_end_time
) < 0)
5158 got_output_end_time
= timeout_abs
;
5159 timeout
= timer_delay
;
5162 got_output_end_time
= invalid_timespec ();
5164 /* NOW can become inaccurate if time can pass during pselect. */
5165 if (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> 0)
5166 now
= invalid_timespec ();
5168 #if defined HAVE_GETADDRINFO_A || defined HAVE_GNUTLS
5170 && (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> ASYNC_RETRY_NSEC
))
5173 timeout
.tv_nsec
= ASYNC_RETRY_NSEC
;
5177 #if defined (HAVE_NS)
5179 #elif defined (HAVE_GLIB)
5184 (max (max_process_desc
, max_input_desc
) + 1,
5186 (check_write
? &Writeok
: 0),
5187 NULL
, &timeout
, NULL
);
5190 /* GnuTLS buffers data internally. In lowat mode it leaves
5191 some data in the TCP buffers so that select works, but
5192 with custom pull/push functions we need to check if some
5193 data is available in the buffers manually. */
5196 fd_set tls_available
;
5199 FD_ZERO (&tls_available
);
5202 /* We're not waiting on a specific process, so loop
5203 through all the channels and check for data.
5204 This is a workaround needed for some versions of
5205 the gnutls library -- 2.12.14 has been confirmed
5207 http://comments.gmane.org/gmane.emacs.devel/145074 */
5208 for (channel
= 0; channel
< FD_SETSIZE
; ++channel
)
5209 if (! NILP (chan_process
[channel
]))
5211 struct Lisp_Process
*p
=
5212 XPROCESS (chan_process
[channel
]);
5213 if (p
&& p
->gnutls_p
&& p
->gnutls_state
5214 && ((emacs_gnutls_record_check_pending
5219 eassert (p
->infd
== channel
);
5220 FD_SET (p
->infd
, &tls_available
);
5227 /* Check this specific channel. */
5228 if (wait_proc
->gnutls_p
/* Check for valid process. */
5229 && wait_proc
->gnutls_state
5230 /* Do we have pending data? */
5231 && ((emacs_gnutls_record_check_pending
5232 (wait_proc
->gnutls_state
))
5236 eassert (0 <= wait_proc
->infd
);
5237 /* Set to Available. */
5238 FD_SET (wait_proc
->infd
, &tls_available
);
5243 Available
= tls_available
;
5250 /* Make C-g and alarm signals set flags again. */
5251 clear_waiting_for_input ();
5253 /* If we woke up due to SIGWINCH, actually change size now. */
5254 do_pending_window_change (0);
5258 /* Exit the main loop if we've passed the requested timeout,
5259 or aren't skipping processes and got some output and
5260 haven't lowered our timeout due to timers or SIGIO and
5261 have waited a long amount of time due to repeated
5265 struct timespec cmp_time
5268 : (!process_skipped
&& got_some_output
> 0
5269 && (timeout
.tv_sec
> 0 || timeout
.tv_nsec
> 0))
5270 ? got_output_end_time
5271 : invalid_timespec ());
5272 if (timespec_valid_p (cmp_time
))
5274 now
= current_timespec ();
5275 if (timespec_cmp (cmp_time
, now
) <= 0)
5282 if (xerrno
== EINTR
)
5284 else if (xerrno
== EBADF
)
5287 report_file_errno ("Failed select", Qnil
, xerrno
);
5290 /* Check for keyboard input. */
5291 /* If there is any, return immediately
5292 to give it higher priority than subprocesses. */
5296 unsigned old_timers_run
= timers_run
;
5297 struct buffer
*old_buffer
= current_buffer
;
5298 Lisp_Object old_window
= selected_window
;
5301 if (detect_input_pending_run_timers (do_display
))
5303 swallow_events (do_display
);
5304 if (detect_input_pending_run_timers (do_display
))
5308 /* If a timer has run, this might have changed buffers
5309 an alike. Make read_key_sequence aware of that. */
5310 if (timers_run
!= old_timers_run
5311 && waiting_for_user_input_p
== -1
5312 && (old_buffer
!= current_buffer
5313 || !EQ (old_window
, selected_window
)))
5314 record_asynch_buffer_change ();
5320 /* If there is unread keyboard input, also return. */
5322 && requeued_events_pending_p ())
5325 /* If we are not checking for keyboard input now,
5326 do process events (but don't run any timers).
5327 This is so that X events will be processed.
5328 Otherwise they may have to wait until polling takes place.
5329 That would causes delays in pasting selections, for example.
5331 (We used to do this only if wait_for_cell.) */
5332 if (read_kbd
== 0 && detect_input_pending ())
5334 swallow_events (do_display
);
5335 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5336 if (detect_input_pending ())
5341 /* Exit now if the cell we're waiting for became non-nil. */
5342 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5346 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5347 go read it. This can happen with X on BSD after logging out.
5348 In that case, there really is no input and no SIGIO,
5349 but select says there is input. */
5351 if (read_kbd
&& interrupt_input
5352 && keyboard_bit_set (&Available
) && ! noninteractive
)
5353 handle_input_available_signal (SIGIO
);
5356 /* If checking input just got us a size-change event from X,
5357 obey it now if we should. */
5358 if (read_kbd
|| ! NILP (wait_for_cell
))
5359 do_pending_window_change (0);
5361 /* Check for data from a process. */
5362 if (no_avail
|| nfds
== 0)
5365 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
5367 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
5369 && ((d
->condition
& FOR_READ
5370 && FD_ISSET (channel
, &Available
))
5371 || (d
->condition
& FOR_WRITE
5372 && FD_ISSET (channel
, &write_mask
))))
5373 d
->func (channel
, d
->data
);
5376 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5378 if (FD_ISSET (channel
, &Available
)
5379 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
5380 && !FD_ISSET (channel
, &non_process_wait_mask
))
5384 /* If waiting for this channel, arrange to return as
5385 soon as no more input to be processed. No more
5387 proc
= chan_process
[channel
];
5391 /* If this is a server stream socket, accept connection. */
5392 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5394 server_accept_connection (proc
, channel
);
5398 /* Read data from the process, starting with our
5399 buffered-ahead character if we have one. */
5401 nread
= read_process_output (proc
, channel
);
5402 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
))
5403 && got_some_output
< nread
)
5404 got_some_output
= nread
;
5407 /* Vacuum up any leftovers without waiting. */
5408 if (wait_proc
== XPROCESS (proc
))
5410 /* Since read_process_output can run a filter,
5411 which can call accept-process-output,
5412 don't try to read from any other processes
5413 before doing the select again. */
5414 FD_ZERO (&Available
);
5417 redisplay_preserve_echo_area (12);
5420 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5423 else if (nread
== -1 && errno
== EAGAIN
)
5426 /* FIXME: Is this special case still needed? */
5427 /* Note that we cannot distinguish between no input
5428 available now and a closed pipe.
5429 With luck, a closed pipe will be accompanied by
5430 subprocess termination and SIGCHLD. */
5431 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
)
5432 && !PIPECONN_P (proc
))
5436 /* On some OSs with ptys, when the process on one end of
5437 a pty exits, the other end gets an error reading with
5438 errno = EIO instead of getting an EOF (0 bytes read).
5439 Therefore, if we get an error reading and errno =
5440 EIO, just continue, because the child process has
5441 exited and should clean itself up soon (e.g. when we
5443 else if (nread
== -1 && errno
== EIO
)
5445 struct Lisp_Process
*p
= XPROCESS (proc
);
5447 /* Clear the descriptor now, so we only raise the
5449 FD_CLR (channel
, &input_wait_mask
);
5450 FD_CLR (channel
, &non_keyboard_wait_mask
);
5454 /* If the EIO occurs on a pty, the SIGCHLD handler's
5455 waitpid call will not find the process object to
5456 delete. Do it here. */
5457 p
->tick
= ++process_tick
;
5458 pset_status (p
, Qfailed
);
5461 #endif /* HAVE_PTYS */
5462 /* If we can detect process termination, don't consider the
5463 process gone just because its pipe is closed. */
5464 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
)
5465 && !PIPECONN_P (proc
))
5467 else if (nread
== 0 && PIPECONN_P (proc
))
5469 /* Preserve status of processes already terminated. */
5470 XPROCESS (proc
)->tick
= ++process_tick
;
5471 deactivate_process (proc
);
5472 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5473 pset_status (XPROCESS (proc
),
5474 list2 (Qexit
, make_number (0)));
5478 /* Preserve status of processes already terminated. */
5479 XPROCESS (proc
)->tick
= ++process_tick
;
5480 deactivate_process (proc
);
5481 if (XPROCESS (proc
)->raw_status_new
)
5482 update_status (XPROCESS (proc
));
5483 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5484 pset_status (XPROCESS (proc
),
5485 list2 (Qexit
, make_number (256)));
5488 if (FD_ISSET (channel
, &Writeok
)
5489 && FD_ISSET (channel
, &connect_wait_mask
))
5491 struct Lisp_Process
*p
;
5493 FD_CLR (channel
, &connect_wait_mask
);
5494 FD_CLR (channel
, &write_mask
);
5495 if (--num_pending_connects
< 0)
5498 proc
= chan_process
[channel
];
5502 p
= XPROCESS (proc
);
5505 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5506 So only use it on systems where it is known to work. */
5508 socklen_t xlen
= sizeof (xerrno
);
5509 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5514 struct sockaddr pname
;
5515 socklen_t pnamelen
= sizeof (pname
);
5517 /* If connection failed, getpeername will fail. */
5519 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
5521 /* Obtain connect failure code through error slippage. */
5524 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
5531 p
->tick
= ++process_tick
;
5532 pset_status (p
, list2 (Qfailed
, make_number (xerrno
)));
5533 deactivate_process (proc
);
5538 /* If we have an incompletely set up TLS connection,
5539 then defer the sentinel signaling until
5541 if (NILP (p
->gnutls_boot_parameters
)
5545 pset_status (p
, Qrun
);
5546 /* Execute the sentinel here. If we had relied on
5547 status_notify to do it later, it will read input
5548 from the process before calling the sentinel. */
5549 exec_sentinel (proc
, build_string ("open\n"));
5552 if (0 <= p
->infd
&& !EQ (p
->filter
, Qt
)
5553 && !EQ (p
->command
, Qt
))
5555 FD_SET (p
->infd
, &input_wait_mask
);
5556 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5560 } /* End for each file descriptor. */
5561 } /* End while exit conditions not met. */
5563 unbind_to (count
, Qnil
);
5565 /* If calling from keyboard input, do not quit
5566 since we want to return C-g as an input character.
5567 Otherwise, do pending quit if requested. */
5570 /* Prevent input_pending from remaining set if we quit. */
5571 clear_input_pending ();
5575 return got_some_output
;
5578 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5581 read_process_output_call (Lisp_Object fun_and_args
)
5583 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5587 read_process_output_error_handler (Lisp_Object error_val
)
5589 cmd_error_internal (error_val
, "error in process filter: ");
5591 update_echo_area ();
5592 Fsleep_for (make_number (2), Qnil
);
5597 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5599 struct coding_system
*coding
);
5601 /* Read pending output from the process channel,
5602 starting with our buffered-ahead character if we have one.
5603 Yield number of decoded characters read.
5605 This function reads at most 4096 characters.
5606 If you want to read all available subprocess output,
5607 you must call it repeatedly until it returns zero.
5609 The characters read are decoded according to PROC's coding-system
5613 read_process_output (Lisp_Object proc
, int channel
)
5616 struct Lisp_Process
*p
= XPROCESS (proc
);
5617 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5618 int carryover
= p
->decoding_carryover
;
5619 enum { readmax
= 4096 };
5620 ptrdiff_t count
= SPECPDL_INDEX ();
5621 Lisp_Object odeactivate
;
5622 char chars
[sizeof coding
->carryover
+ readmax
];
5625 /* See the comment above. */
5626 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
5628 #ifdef DATAGRAM_SOCKETS
5629 /* We have a working select, so proc_buffered_char is always -1. */
5630 if (DATAGRAM_CHAN_P (channel
))
5632 socklen_t len
= datagram_address
[channel
].len
;
5633 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5634 0, datagram_address
[channel
].sa
, &len
);
5639 bool buffered
= proc_buffered_char
[channel
] >= 0;
5642 chars
[carryover
] = proc_buffered_char
[channel
];
5643 proc_buffered_char
[channel
] = -1;
5646 if (p
->gnutls_p
&& p
->gnutls_state
)
5647 nbytes
= emacs_gnutls_read (p
, chars
+ carryover
+ buffered
,
5648 readmax
- buffered
);
5651 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5652 readmax
- buffered
);
5653 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5655 int delay
= p
->read_output_delay
;
5658 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5661 process_output_delay_count
++;
5662 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5665 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5667 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5669 process_output_delay_count
--;
5671 p
->read_output_delay
= delay
;
5674 p
->read_output_skip
= 1;
5675 process_output_skip
= 1;
5679 nbytes
+= buffered
&& nbytes
<= 0;
5682 p
->decoding_carryover
= 0;
5684 /* At this point, NBYTES holds number of bytes just received
5685 (including the one in proc_buffered_char[channel]). */
5688 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5690 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5693 /* Now set NBYTES how many bytes we must decode. */
5694 nbytes
+= carryover
;
5696 odeactivate
= Vdeactivate_mark
;
5697 /* There's no good reason to let process filters change the current
5698 buffer, and many callers of accept-process-output, sit-for, and
5699 friends don't expect current-buffer to be changed from under them. */
5700 record_unwind_current_buffer ();
5702 read_and_dispose_of_process_output (p
, chars
, nbytes
, coding
);
5704 /* Handling the process output should not deactivate the mark. */
5705 Vdeactivate_mark
= odeactivate
;
5707 unbind_to (count
, Qnil
);
5712 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5714 struct coding_system
*coding
)
5716 Lisp_Object outstream
= p
->filter
;
5718 bool outer_running_asynch_code
= running_asynch_code
;
5719 int waiting
= waiting_for_user_input_p
;
5722 Lisp_Object obuffer
, okeymap
;
5723 XSETBUFFER (obuffer
, current_buffer
);
5724 okeymap
= BVAR (current_buffer
, keymap
);
5727 /* We inhibit quit here instead of just catching it so that
5728 hitting ^G when a filter happens to be running won't screw
5730 specbind (Qinhibit_quit
, Qt
);
5731 specbind (Qlast_nonmenu_event
, Qt
);
5733 /* In case we get recursively called,
5734 and we already saved the match data nonrecursively,
5735 save the same match data in safely recursive fashion. */
5736 if (outer_running_asynch_code
)
5739 /* Don't clobber the CURRENT match data, either! */
5740 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5741 restore_search_regs ();
5742 record_unwind_save_match_data ();
5743 Fset_match_data (tem
, Qt
);
5746 /* For speed, if a search happens within this code,
5747 save the match data in a special nonrecursive fashion. */
5748 running_asynch_code
= 1;
5750 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5751 text
= coding
->dst_object
;
5752 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5753 /* A new coding system might be found. */
5754 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5756 pset_decode_coding_system (p
, Vlast_coding_system_used
);
5758 /* Don't call setup_coding_system for
5759 proc_decode_coding_system[channel] here. It is done in
5760 detect_coding called via decode_coding above. */
5762 /* If a coding system for encoding is not yet decided, we set
5763 it as the same as coding-system for decoding.
5765 But, before doing that we must check if
5766 proc_encode_coding_system[p->outfd] surely points to a
5767 valid memory because p->outfd will be changed once EOF is
5768 sent to the process. */
5769 if (NILP (p
->encode_coding_system
) && p
->outfd
>= 0
5770 && proc_encode_coding_system
[p
->outfd
])
5772 pset_encode_coding_system
5773 (p
, coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
));
5774 setup_coding_system (p
->encode_coding_system
,
5775 proc_encode_coding_system
[p
->outfd
]);
5779 if (coding
->carryover_bytes
> 0)
5781 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5782 pset_decoding_buf (p
, make_uninit_string (coding
->carryover_bytes
));
5783 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5784 coding
->carryover_bytes
);
5785 p
->decoding_carryover
= coding
->carryover_bytes
;
5787 if (SBYTES (text
) > 0)
5788 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5789 sometimes it's simply wrong to wrap (e.g. when called from
5790 accept-process-output). */
5791 internal_condition_case_1 (read_process_output_call
,
5792 list3 (outstream
, make_lisp_proc (p
), text
),
5793 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5794 read_process_output_error_handler
);
5796 /* If we saved the match data nonrecursively, restore it now. */
5797 restore_search_regs ();
5798 running_asynch_code
= outer_running_asynch_code
;
5800 /* Restore waiting_for_user_input_p as it was
5801 when we were called, in case the filter clobbered it. */
5802 waiting_for_user_input_p
= waiting
;
5804 #if 0 /* Call record_asynch_buffer_change unconditionally,
5805 because we might have changed minor modes or other things
5806 that affect key bindings. */
5807 if (! EQ (Fcurrent_buffer (), obuffer
)
5808 || ! EQ (current_buffer
->keymap
, okeymap
))
5810 /* But do it only if the caller is actually going to read events.
5811 Otherwise there's no need to make him wake up, and it could
5812 cause trouble (for example it would make sit_for return). */
5813 if (waiting_for_user_input_p
== -1)
5814 record_asynch_buffer_change ();
5817 DEFUN ("internal-default-process-filter", Finternal_default_process_filter
,
5818 Sinternal_default_process_filter
, 2, 2, 0,
5819 doc
: /* Function used as default process filter.
5820 This inserts the process's output into its buffer, if there is one.
5821 Otherwise it discards the output. */)
5822 (Lisp_Object proc
, Lisp_Object text
)
5824 struct Lisp_Process
*p
;
5827 CHECK_PROCESS (proc
);
5828 p
= XPROCESS (proc
);
5829 CHECK_STRING (text
);
5831 if (!NILP (p
->buffer
) && BUFFER_LIVE_P (XBUFFER (p
->buffer
)))
5833 Lisp_Object old_read_only
;
5834 ptrdiff_t old_begv
, old_zv
;
5835 ptrdiff_t old_begv_byte
, old_zv_byte
;
5836 ptrdiff_t before
, before_byte
;
5837 ptrdiff_t opoint_byte
;
5840 Fset_buffer (p
->buffer
);
5842 opoint_byte
= PT_BYTE
;
5843 old_read_only
= BVAR (current_buffer
, read_only
);
5846 old_begv_byte
= BEGV_BYTE
;
5847 old_zv_byte
= ZV_BYTE
;
5849 bset_read_only (current_buffer
, Qnil
);
5851 /* Insert new output into buffer at the current end-of-output
5852 marker, thus preserving logical ordering of input and output. */
5853 if (XMARKER (p
->mark
)->buffer
)
5854 set_point_from_marker (p
->mark
);
5856 SET_PT_BOTH (ZV
, ZV_BYTE
);
5858 before_byte
= PT_BYTE
;
5860 /* If the output marker is outside of the visible region, save
5861 the restriction and widen. */
5862 if (! (BEGV
<= PT
&& PT
<= ZV
))
5865 /* Adjust the multibyteness of TEXT to that of the buffer. */
5866 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5867 != ! STRING_MULTIBYTE (text
))
5868 text
= (STRING_MULTIBYTE (text
)
5869 ? Fstring_as_unibyte (text
)
5870 : Fstring_to_multibyte (text
));
5871 /* Insert before markers in case we are inserting where
5872 the buffer's mark is, and the user's next command is Meta-y. */
5873 insert_from_string_before_markers (text
, 0, 0,
5874 SCHARS (text
), SBYTES (text
), 0);
5876 /* Make sure the process marker's position is valid when the
5877 process buffer is changed in the signal_after_change above.
5878 W3 is known to do that. */
5879 if (BUFFERP (p
->buffer
)
5880 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5881 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5883 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5885 update_mode_lines
= 23;
5887 /* Make sure opoint and the old restrictions
5888 float ahead of any new text just as point would. */
5889 if (opoint
>= before
)
5891 opoint
+= PT
- before
;
5892 opoint_byte
+= PT_BYTE
- before_byte
;
5894 if (old_begv
> before
)
5896 old_begv
+= PT
- before
;
5897 old_begv_byte
+= PT_BYTE
- before_byte
;
5899 if (old_zv
>= before
)
5901 old_zv
+= PT
- before
;
5902 old_zv_byte
+= PT_BYTE
- before_byte
;
5905 /* If the restriction isn't what it should be, set it. */
5906 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5907 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5909 bset_read_only (current_buffer
, old_read_only
);
5910 SET_PT_BOTH (opoint
, opoint_byte
);
5915 /* Sending data to subprocess. */
5917 /* In send_process, when a write fails temporarily,
5918 wait_reading_process_output is called. It may execute user code,
5919 e.g. timers, that attempts to write new data to the same process.
5920 We must ensure that data is sent in the right order, and not
5921 interspersed half-completed with other writes (Bug#10815). This is
5922 handled by the write_queue element of struct process. It is a list
5923 with each entry having the form
5925 (string . (offset . length))
5927 where STRING is a lisp string, OFFSET is the offset into the
5928 string's byte sequence from which we should begin to send, and
5929 LENGTH is the number of bytes left to send. */
5931 /* Create a new entry in write_queue.
5932 INPUT_OBJ should be a buffer, string Qt, or Qnil.
5933 BUF is a pointer to the string sequence of the input_obj or a C
5934 string in case of Qt or Qnil. */
5937 write_queue_push (struct Lisp_Process
*p
, Lisp_Object input_obj
,
5938 const char *buf
, ptrdiff_t len
, bool front
)
5941 Lisp_Object entry
, obj
;
5943 if (STRINGP (input_obj
))
5945 offset
= buf
- SSDATA (input_obj
);
5951 obj
= make_unibyte_string (buf
, len
);
5954 entry
= Fcons (obj
, Fcons (make_number (offset
), make_number (len
)));
5957 pset_write_queue (p
, Fcons (entry
, p
->write_queue
));
5959 pset_write_queue (p
, nconc2 (p
->write_queue
, list1 (entry
)));
5962 /* Remove the first element in the write_queue of process P, put its
5963 contents in OBJ, BUF and LEN, and return true. If the
5964 write_queue is empty, return false. */
5967 write_queue_pop (struct Lisp_Process
*p
, Lisp_Object
*obj
,
5968 const char **buf
, ptrdiff_t *len
)
5970 Lisp_Object entry
, offset_length
;
5973 if (NILP (p
->write_queue
))
5976 entry
= XCAR (p
->write_queue
);
5977 pset_write_queue (p
, XCDR (p
->write_queue
));
5979 *obj
= XCAR (entry
);
5980 offset_length
= XCDR (entry
);
5982 *len
= XINT (XCDR (offset_length
));
5983 offset
= XINT (XCAR (offset_length
));
5984 *buf
= SSDATA (*obj
) + offset
;
5989 /* Send some data to process PROC.
5990 BUF is the beginning of the data; LEN is the number of characters.
5991 OBJECT is the Lisp object that the data comes from. If OBJECT is
5992 nil or t, it means that the data comes from C string.
5994 If OBJECT is not nil, the data is encoded by PROC's coding-system
5995 for encoding before it is sent.
5997 This function can evaluate Lisp code and can garbage collect. */
6000 send_process (Lisp_Object proc
, const char *buf
, ptrdiff_t len
,
6003 struct Lisp_Process
*p
= XPROCESS (proc
);
6005 struct coding_system
*coding
;
6007 if (NETCONN_P (proc
))
6009 wait_while_connecting (proc
);
6010 wait_for_tls_negotiation (proc
);
6013 if (p
->raw_status_new
)
6015 if (! EQ (p
->status
, Qrun
))
6016 error ("Process %s not running", SDATA (p
->name
));
6018 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
6020 coding
= proc_encode_coding_system
[p
->outfd
];
6021 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
6023 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
6024 || (BUFFERP (object
)
6025 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
6028 pset_encode_coding_system
6029 (p
, complement_process_encoding_system (p
->encode_coding_system
));
6030 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
6032 /* The coding system for encoding was changed to raw-text
6033 because we sent a unibyte text previously. Now we are
6034 sending a multibyte text, thus we must encode it by the
6035 original coding system specified for the current process.
6037 Another reason we come here is that the coding system
6038 was just complemented and a new one was returned by
6039 complement_process_encoding_system. */
6040 setup_coding_system (p
->encode_coding_system
, coding
);
6041 Vlast_coding_system_used
= p
->encode_coding_system
;
6043 coding
->src_multibyte
= 1;
6047 coding
->src_multibyte
= 0;
6048 /* For sending a unibyte text, character code conversion should
6049 not take place but EOL conversion should. So, setup raw-text
6050 or one of the subsidiary if we have not yet done it. */
6051 if (CODING_REQUIRE_ENCODING (coding
))
6053 if (CODING_REQUIRE_FLUSHING (coding
))
6055 /* But, before changing the coding, we must flush out data. */
6056 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6057 send_process (proc
, "", 0, Qt
);
6058 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
6060 setup_coding_system (raw_text_coding_system
6061 (Vlast_coding_system_used
),
6063 coding
->src_multibyte
= 0;
6066 coding
->dst_multibyte
= 0;
6068 if (CODING_REQUIRE_ENCODING (coding
))
6070 coding
->dst_object
= Qt
;
6071 if (BUFFERP (object
))
6073 ptrdiff_t from_byte
, from
, to
;
6074 ptrdiff_t save_pt
, save_pt_byte
;
6075 struct buffer
*cur
= current_buffer
;
6077 set_buffer_internal (XBUFFER (object
));
6078 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
6080 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
6081 from
= BYTE_TO_CHAR (from_byte
);
6082 to
= BYTE_TO_CHAR (from_byte
+ len
);
6083 TEMP_SET_PT_BOTH (from
, from_byte
);
6084 encode_coding_object (coding
, object
, from
, from_byte
,
6085 to
, from_byte
+ len
, Qt
);
6086 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
6087 set_buffer_internal (cur
);
6089 else if (STRINGP (object
))
6091 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
6092 SBYTES (object
), Qt
);
6096 coding
->dst_object
= make_unibyte_string (buf
, len
);
6097 coding
->produced
= len
;
6100 len
= coding
->produced
;
6101 object
= coding
->dst_object
;
6102 buf
= SSDATA (object
);
6105 /* If there is already data in the write_queue, put the new data
6106 in the back of queue. Otherwise, ignore it. */
6107 if (!NILP (p
->write_queue
))
6108 write_queue_push (p
, object
, buf
, len
, 0);
6110 do /* while !NILP (p->write_queue) */
6112 ptrdiff_t cur_len
= -1;
6113 const char *cur_buf
;
6114 Lisp_Object cur_object
;
6116 /* If write_queue is empty, ignore it. */
6117 if (!write_queue_pop (p
, &cur_object
, &cur_buf
, &cur_len
))
6121 cur_object
= object
;
6126 /* Send this batch, using one or more write calls. */
6127 ptrdiff_t written
= 0;
6128 int outfd
= p
->outfd
;
6129 #ifdef DATAGRAM_SOCKETS
6130 if (DATAGRAM_CHAN_P (outfd
))
6132 rv
= sendto (outfd
, cur_buf
, cur_len
,
6133 0, datagram_address
[outfd
].sa
,
6134 datagram_address
[outfd
].len
);
6137 else if (errno
== EMSGSIZE
)
6138 report_file_error ("Sending datagram", proc
);
6144 if (p
->gnutls_p
&& p
->gnutls_state
)
6145 written
= emacs_gnutls_write (p
, cur_buf
, cur_len
);
6148 written
= emacs_write_sig (outfd
, cur_buf
, cur_len
);
6149 rv
= (written
? 0 : -1);
6150 if (p
->read_output_delay
> 0
6151 && p
->adaptive_read_buffering
== 1)
6153 p
->read_output_delay
= 0;
6154 process_output_delay_count
--;
6155 p
->read_output_skip
= 0;
6163 || errno
== EWOULDBLOCK
6166 /* Buffer is full. Wait, accepting input;
6167 that may allow the program
6168 to finish doing output and read more. */
6170 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
6171 /* A gross hack to work around a bug in FreeBSD.
6172 In the following sequence, read(2) returns
6176 write(2) 954 bytes, get EAGAIN
6177 read(2) 1024 bytes in process_read_output
6178 read(2) 11 bytes in process_read_output
6180 That is, read(2) returns more bytes than have
6181 ever been written successfully. The 1033 bytes
6182 read are the 1022 bytes written successfully
6183 after processing (for example with CRs added if
6184 the terminal is set up that way which it is
6185 here). The same bytes will be seen again in a
6186 later read(2), without the CRs. */
6188 if (errno
== EAGAIN
)
6191 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
6193 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
6195 /* Put what we should have written in wait_queue. */
6196 write_queue_push (p
, cur_object
, cur_buf
, cur_len
, 1);
6197 wait_reading_process_output (0, 20 * 1000 * 1000,
6198 0, 0, Qnil
, NULL
, 0);
6199 /* Reread queue, to see what is left. */
6202 else if (errno
== EPIPE
)
6204 p
->raw_status_new
= 0;
6205 pset_status (p
, list2 (Qexit
, make_number (256)));
6206 p
->tick
= ++process_tick
;
6207 deactivate_process (proc
);
6208 error ("process %s no longer connected to pipe; closed it",
6212 /* This is a real error. */
6213 report_file_error ("Writing to process", proc
);
6219 while (!NILP (p
->write_queue
));
6222 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
6224 doc
: /* Send current contents of region as input to PROCESS.
6225 PROCESS may be a process, a buffer, the name of a process or buffer, or
6226 nil, indicating the current buffer's process.
6227 Called from program, takes three arguments, PROCESS, START and END.
6228 If the region is more than 500 characters long,
6229 it is sent in several bunches. This may happen even for shorter regions.
6230 Output from processes can arrive in between bunches.
6232 If PROCESS is a non-blocking network process that hasn't been fully
6233 set up yet, this function will block until socket setup has completed. */)
6234 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
6236 Lisp_Object proc
= get_process (process
);
6237 ptrdiff_t start_byte
, end_byte
;
6239 validate_region (&start
, &end
);
6241 start_byte
= CHAR_TO_BYTE (XINT (start
));
6242 end_byte
= CHAR_TO_BYTE (XINT (end
));
6244 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
6245 move_gap_both (XINT (start
), start_byte
);
6247 if (NETCONN_P (proc
))
6248 wait_while_connecting (proc
);
6250 send_process (proc
, (char *) BYTE_POS_ADDR (start_byte
),
6251 end_byte
- start_byte
, Fcurrent_buffer ());
6256 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
6258 doc
: /* Send PROCESS the contents of STRING as input.
6259 PROCESS may be a process, a buffer, the name of a process or buffer, or
6260 nil, indicating the current buffer's process.
6261 If STRING is more than 500 characters long,
6262 it is sent in several bunches. This may happen even for shorter strings.
6263 Output from processes can arrive in between bunches.
6265 If PROCESS is a non-blocking network process that hasn't been fully
6266 set up yet, this function will block until socket setup has completed. */)
6267 (Lisp_Object process
, Lisp_Object string
)
6269 CHECK_STRING (string
);
6270 Lisp_Object proc
= get_process (process
);
6271 send_process (proc
, SSDATA (string
),
6272 SBYTES (string
), string
);
6276 /* Return the foreground process group for the tty/pty that
6277 the process P uses. */
6279 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
6284 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
6287 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
6288 master side. Try the slave side. */
6289 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
6293 ioctl (fd
, TIOCGPGRP
, &gid
);
6297 #endif /* defined (TIOCGPGRP ) */
6302 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
6303 Sprocess_running_child_p
, 0, 1, 0,
6304 doc
: /* Return non-nil if PROCESS has given the terminal to a
6305 child. If the operating system does not make it possible to find out,
6306 return t. If we can find out, return the numeric ID of the foreground
6308 (Lisp_Object process
)
6310 /* Initialize in case ioctl doesn't exist or gives an error,
6311 in a way that will cause returning t. */
6312 Lisp_Object proc
= get_process (process
);
6313 struct Lisp_Process
*p
= XPROCESS (proc
);
6315 if (!EQ (p
->type
, Qreal
))
6316 error ("Process %s is not a subprocess",
6319 error ("Process %s is not active",
6322 pid_t gid
= emacs_get_tty_pgrp (p
);
6327 return make_number (gid
);
6331 /* Send a signal number SIGNO to PROCESS.
6332 If CURRENT_GROUP is t, that means send to the process group
6333 that currently owns the terminal being used to communicate with PROCESS.
6334 This is used for various commands in shell mode.
6335 If CURRENT_GROUP is lambda, that means send to the process group
6336 that currently owns the terminal, but only if it is NOT the shell itself.
6338 If NOMSG is false, insert signal-announcements into process's buffers
6341 If we can, we try to signal PROCESS by sending control characters
6342 down the pty. This allows us to signal inferiors who have changed
6343 their uid, for which kill would return an EPERM error. */
6346 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
6350 struct Lisp_Process
*p
;
6354 proc
= get_process (process
);
6355 p
= XPROCESS (proc
);
6357 if (!EQ (p
->type
, Qreal
))
6358 error ("Process %s is not a subprocess",
6361 error ("Process %s is not active",
6365 current_group
= Qnil
;
6367 /* If we are using pgrps, get a pgrp number and make it negative. */
6368 if (NILP (current_group
))
6369 /* Send the signal to the shell's process group. */
6373 #ifdef SIGNALS_VIA_CHARACTERS
6374 /* If possible, send signals to the entire pgrp
6375 by sending an input character to it. */
6378 cc_t
*sig_char
= NULL
;
6380 tcgetattr (p
->infd
, &t
);
6385 sig_char
= &t
.c_cc
[VINTR
];
6389 sig_char
= &t
.c_cc
[VQUIT
];
6394 sig_char
= &t
.c_cc
[VSWTCH
];
6396 sig_char
= &t
.c_cc
[VSUSP
];
6401 if (sig_char
&& *sig_char
!= CDISABLE
)
6403 send_process (proc
, (char *) sig_char
, 1, Qnil
);
6406 /* If we can't send the signal with a character,
6407 fall through and send it another way. */
6409 /* The code above may fall through if it can't
6410 handle the signal. */
6411 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6414 /* Get the current pgrp using the tty itself, if we have that.
6415 Otherwise, use the pty to get the pgrp.
6416 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6417 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6418 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6419 His patch indicates that if TIOCGPGRP returns an error, then
6420 we should just assume that p->pid is also the process group id. */
6422 gid
= emacs_get_tty_pgrp (p
);
6425 /* If we can't get the information, assume
6426 the shell owns the tty. */
6429 /* It is not clear whether anything really can set GID to -1.
6430 Perhaps on some system one of those ioctls can or could do so.
6431 Or perhaps this is vestigial. */
6434 #else /* ! defined (TIOCGPGRP) */
6435 /* Can't select pgrps on this system, so we know that
6436 the child itself heads the pgrp. */
6438 #endif /* ! defined (TIOCGPGRP) */
6440 /* If current_group is lambda, and the shell owns the terminal,
6441 don't send any signal. */
6442 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6447 if (signo
== SIGCONT
)
6449 p
->raw_status_new
= 0;
6450 pset_status (p
, Qrun
);
6451 p
->tick
= ++process_tick
;
6454 status_notify (NULL
, NULL
);
6455 redisplay_preserve_echo_area (13);
6461 /* Work around a HP-UX 7.0 bug that mishandles signals to subjobs.
6462 We don't know whether the bug is fixed in later HP-UX versions. */
6463 if (! NILP (current_group
) && ioctl (p
->infd
, TIOCSIGSEND
, signo
) != -1)
6467 /* If we don't have process groups, send the signal to the immediate
6468 subprocess. That isn't really right, but it's better than any
6469 obvious alternative. */
6470 pid_t pid
= no_pgrp
? gid
: - gid
;
6472 /* Do not kill an already-reaped process, as that could kill an
6473 innocent bystander that happens to have the same process ID. */
6475 block_child_signal (&oldset
);
6478 unblock_child_signal (&oldset
);
6481 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6482 doc
: /* Interrupt process PROCESS.
6483 PROCESS may be a process, a buffer, or the name of a process or buffer.
6484 No arg or nil means current buffer's process.
6485 Second arg CURRENT-GROUP non-nil means send signal to
6486 the current process-group of the process's controlling terminal
6487 rather than to the process's own process group.
6488 If the process is a shell, this means interrupt current subjob
6489 rather than the shell.
6491 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6492 don't send the signal. */)
6493 (Lisp_Object process
, Lisp_Object current_group
)
6495 process_send_signal (process
, SIGINT
, current_group
, 0);
6499 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6500 doc
: /* Kill process PROCESS. May be process or name of one.
6501 See function `interrupt-process' for more details on usage. */)
6502 (Lisp_Object process
, Lisp_Object current_group
)
6504 process_send_signal (process
, SIGKILL
, current_group
, 0);
6508 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6509 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6510 See function `interrupt-process' for more details on usage. */)
6511 (Lisp_Object process
, Lisp_Object current_group
)
6513 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6517 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6518 doc
: /* Stop process PROCESS. May be process or name of one.
6519 See function `interrupt-process' for more details on usage.
6520 If PROCESS is a network or serial process, inhibit handling of incoming
6522 (Lisp_Object process
, Lisp_Object current_group
)
6524 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)
6525 || PIPECONN_P (process
)))
6527 struct Lisp_Process
*p
;
6529 p
= XPROCESS (process
);
6530 if (NILP (p
->command
)
6533 FD_CLR (p
->infd
, &input_wait_mask
);
6534 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6536 pset_command (p
, Qt
);
6540 error ("No SIGTSTP support");
6542 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6547 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6548 doc
: /* Continue process PROCESS. May be process or name of one.
6549 See function `interrupt-process' for more details on usage.
6550 If PROCESS is a network or serial process, resume handling of incoming
6552 (Lisp_Object process
, Lisp_Object current_group
)
6554 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)
6555 || PIPECONN_P (process
)))
6557 struct Lisp_Process
*p
;
6559 p
= XPROCESS (process
);
6560 if (EQ (p
->command
, Qt
)
6562 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6564 FD_SET (p
->infd
, &input_wait_mask
);
6565 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6567 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6568 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6569 #else /* not WINDOWSNT */
6570 tcflush (p
->infd
, TCIFLUSH
);
6571 #endif /* not WINDOWSNT */
6573 pset_command (p
, Qnil
);
6577 process_send_signal (process
, SIGCONT
, current_group
, 0);
6579 error ("No SIGCONT support");
6584 /* Return the integer value of the signal whose abbreviation is ABBR,
6585 or a negative number if there is no such signal. */
6587 abbr_to_signal (char const *name
)
6590 char sigbuf
[20]; /* Large enough for all valid signal abbreviations. */
6592 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6595 for (i
= 0; i
< sizeof sigbuf
; i
++)
6597 sigbuf
[i
] = c_toupper (name
[i
]);
6599 return str2sig (sigbuf
, &signo
) == 0 ? signo
: -1;
6605 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6606 2, 2, "sProcess (name or number): \nnSignal code: ",
6607 doc
: /* Send PROCESS the signal with code SIGCODE.
6608 PROCESS may also be a number specifying the process id of the
6609 process to signal; in this case, the process need not be a child of
6611 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6612 (Lisp_Object process
, Lisp_Object sigcode
)
6617 if (STRINGP (process
))
6619 Lisp_Object tem
= Fget_process (process
);
6622 Lisp_Object process_number
6623 = string_to_number (SSDATA (process
), 10, 1);
6624 if (NUMBERP (process_number
))
6625 tem
= process_number
;
6629 else if (!NUMBERP (process
))
6630 process
= get_process (process
);
6635 if (NUMBERP (process
))
6636 CONS_TO_INTEGER (process
, pid_t
, pid
);
6639 CHECK_PROCESS (process
);
6640 pid
= XPROCESS (process
)->pid
;
6642 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6645 if (INTEGERP (sigcode
))
6647 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
6648 signo
= XINT (sigcode
);
6654 CHECK_SYMBOL (sigcode
);
6655 name
= SSDATA (SYMBOL_NAME (sigcode
));
6657 signo
= abbr_to_signal (name
);
6659 error ("Undefined signal name %s", name
);
6662 return make_number (kill (pid
, signo
));
6665 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6666 doc
: /* Make PROCESS see end-of-file in its input.
6667 EOF comes after any text already sent to it.
6668 PROCESS may be a process, a buffer, the name of a process or buffer, or
6669 nil, indicating the current buffer's process.
6670 If PROCESS is a network connection, or is a process communicating
6671 through a pipe (as opposed to a pty), then you cannot send any more
6672 text to PROCESS after you call this function.
6673 If PROCESS is a serial process, wait until all output written to the
6674 process has been transmitted to the serial port. */)
6675 (Lisp_Object process
)
6678 struct coding_system
*coding
= NULL
;
6681 proc
= get_process (process
);
6683 if (NETCONN_P (proc
))
6684 wait_while_connecting (proc
);
6686 if (DATAGRAM_CONN_P (proc
))
6690 outfd
= XPROCESS (proc
)->outfd
;
6692 coding
= proc_encode_coding_system
[outfd
];
6694 /* Make sure the process is really alive. */
6695 if (XPROCESS (proc
)->raw_status_new
)
6696 update_status (XPROCESS (proc
));
6697 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6698 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6700 if (coding
&& CODING_REQUIRE_FLUSHING (coding
))
6702 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6703 send_process (proc
, "", 0, Qnil
);
6706 if (XPROCESS (proc
)->pty_flag
)
6707 send_process (proc
, "\004", 1, Qnil
);
6708 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6711 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6712 report_file_error ("Failed tcdrain", Qnil
);
6713 #endif /* not WINDOWSNT */
6714 /* Do nothing on Windows because writes are blocking. */
6718 struct Lisp_Process
*p
= XPROCESS (proc
);
6719 int old_outfd
= p
->outfd
;
6722 #ifdef HAVE_SHUTDOWN
6723 /* If this is a network connection, or socketpair is used
6724 for communication with the subprocess, call shutdown to cause EOF.
6725 (In some old system, shutdown to socketpair doesn't work.
6726 Then we just can't win.) */
6728 && (EQ (p
->type
, Qnetwork
) || p
->infd
== old_outfd
))
6729 shutdown (old_outfd
, 1);
6731 close_process_fd (&p
->open_fd
[WRITE_TO_SUBPROCESS
]);
6732 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6734 report_file_error ("Opening null device", Qnil
);
6735 p
->open_fd
[WRITE_TO_SUBPROCESS
] = new_outfd
;
6736 p
->outfd
= new_outfd
;
6738 if (!proc_encode_coding_system
[new_outfd
])
6739 proc_encode_coding_system
[new_outfd
]
6740 = xmalloc (sizeof (struct coding_system
));
6743 *proc_encode_coding_system
[new_outfd
]
6744 = *proc_encode_coding_system
[old_outfd
];
6745 memset (proc_encode_coding_system
[old_outfd
], 0,
6746 sizeof (struct coding_system
));
6749 setup_coding_system (p
->encode_coding_system
,
6750 proc_encode_coding_system
[new_outfd
]);
6755 /* The main Emacs thread records child processes in three places:
6757 - Vprocess_alist, for asynchronous subprocesses, which are child
6758 processes visible to Lisp.
6760 - deleted_pid_list, for child processes invisible to Lisp,
6761 typically because of delete-process. These are recorded so that
6762 the processes can be reaped when they exit, so that the operating
6763 system's process table is not cluttered by zombies.
6765 - the local variable PID in Fcall_process, call_process_cleanup and
6766 call_process_kill, for synchronous subprocesses.
6767 record_unwind_protect is used to make sure this process is not
6768 forgotten: if the user interrupts call-process and the child
6769 process refuses to exit immediately even with two C-g's,
6770 call_process_kill adds PID's contents to deleted_pid_list before
6773 The main Emacs thread invokes waitpid only on child processes that
6774 it creates and that have not been reaped. This avoid races on
6775 platforms such as GTK, where other threads create their own
6776 subprocesses which the main thread should not reap. For example,
6777 if the main thread attempted to reap an already-reaped child, it
6778 might inadvertently reap a GTK-created process that happened to
6779 have the same process ID. */
6781 /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing
6782 its own SIGCHLD handling. On POSIXish systems, glib needs this to
6783 keep track of its own children. GNUstep is similar. */
6785 static void dummy_handler (int sig
) {}
6786 static signal_handler_t
volatile lib_child_handler
;
6788 /* Handle a SIGCHLD signal by looking for known child processes of
6789 Emacs whose status have changed. For each one found, record its
6792 All we do is change the status; we do not run sentinels or print
6793 notifications. That is saved for the next time keyboard input is
6794 done, in order to avoid timing errors.
6796 ** WARNING: this can be called during garbage collection.
6797 Therefore, it must not be fooled by the presence of mark bits in
6800 ** USG WARNING: Although it is not obvious from the documentation
6801 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6802 signal() before executing at least one wait(), otherwise the
6803 handler will be called again, resulting in an infinite loop. The
6804 relevant portion of the documentation reads "SIGCLD signals will be
6805 queued and the signal-catching function will be continually
6806 reentered until the queue is empty". Invoking signal() causes the
6807 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6810 ** Malloc WARNING: This should never call malloc either directly or
6811 indirectly; if it does, that is a bug. */
6814 handle_child_signal (int sig
)
6816 Lisp_Object tail
, proc
;
6818 /* Find the process that signaled us, and record its status. */
6820 /* The process can have been deleted by Fdelete_process, or have
6821 been started asynchronously by Fcall_process. */
6822 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6824 bool all_pids_are_fixnums
6825 = (MOST_NEGATIVE_FIXNUM
<= TYPE_MINIMUM (pid_t
)
6826 && TYPE_MAXIMUM (pid_t
) <= MOST_POSITIVE_FIXNUM
);
6827 Lisp_Object head
= XCAR (tail
);
6832 if (all_pids_are_fixnums
? INTEGERP (xpid
) : NUMBERP (xpid
))
6835 if (INTEGERP (xpid
))
6836 deleted_pid
= XINT (xpid
);
6838 deleted_pid
= XFLOAT_DATA (xpid
);
6839 if (child_status_changed (deleted_pid
, 0, 0))
6841 if (STRINGP (XCDR (head
)))
6842 unlink (SSDATA (XCDR (head
)));
6843 XSETCAR (tail
, Qnil
);
6848 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6849 FOR_EACH_PROCESS (tail
, proc
)
6851 struct Lisp_Process
*p
= XPROCESS (proc
);
6855 && child_status_changed (p
->pid
, &status
, WUNTRACED
| WCONTINUED
))
6857 /* Change the status of the process that was found. */
6858 p
->tick
= ++process_tick
;
6859 p
->raw_status
= status
;
6860 p
->raw_status_new
= 1;
6862 /* If process has terminated, stop waiting for its output. */
6863 if (WIFSIGNALED (status
) || WIFEXITED (status
))
6865 bool clear_desc_flag
= 0;
6868 clear_desc_flag
= 1;
6870 /* clear_desc_flag avoids a compiler bug in Microsoft C. */
6871 if (clear_desc_flag
)
6873 FD_CLR (p
->infd
, &input_wait_mask
);
6874 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6880 lib_child_handler (sig
);
6881 #ifdef NS_IMPL_GNUSTEP
6882 /* NSTask in GNUstep sets its child handler each time it is called.
6883 So we must re-set ours. */
6884 catch_child_signal ();
6889 deliver_child_signal (int sig
)
6891 deliver_process_signal (sig
, handle_child_signal
);
6896 exec_sentinel_error_handler (Lisp_Object error_val
)
6898 cmd_error_internal (error_val
, "error in process sentinel: ");
6900 update_echo_area ();
6901 Fsleep_for (make_number (2), Qnil
);
6906 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6908 Lisp_Object sentinel
, odeactivate
;
6909 struct Lisp_Process
*p
= XPROCESS (proc
);
6910 ptrdiff_t count
= SPECPDL_INDEX ();
6911 bool outer_running_asynch_code
= running_asynch_code
;
6912 int waiting
= waiting_for_user_input_p
;
6914 if (inhibit_sentinels
)
6917 odeactivate
= Vdeactivate_mark
;
6919 Lisp_Object obuffer
, okeymap
;
6920 XSETBUFFER (obuffer
, current_buffer
);
6921 okeymap
= BVAR (current_buffer
, keymap
);
6924 /* There's no good reason to let sentinels change the current
6925 buffer, and many callers of accept-process-output, sit-for, and
6926 friends don't expect current-buffer to be changed from under them. */
6927 record_unwind_current_buffer ();
6929 sentinel
= p
->sentinel
;
6931 /* Inhibit quit so that random quits don't screw up a running filter. */
6932 specbind (Qinhibit_quit
, Qt
);
6933 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6935 /* In case we get recursively called,
6936 and we already saved the match data nonrecursively,
6937 save the same match data in safely recursive fashion. */
6938 if (outer_running_asynch_code
)
6941 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6942 restore_search_regs ();
6943 record_unwind_save_match_data ();
6944 Fset_match_data (tem
, Qt
);
6947 /* For speed, if a search happens within this code,
6948 save the match data in a special nonrecursive fashion. */
6949 running_asynch_code
= 1;
6951 internal_condition_case_1 (read_process_output_call
,
6952 list3 (sentinel
, proc
, reason
),
6953 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6954 exec_sentinel_error_handler
);
6956 /* If we saved the match data nonrecursively, restore it now. */
6957 restore_search_regs ();
6958 running_asynch_code
= outer_running_asynch_code
;
6960 Vdeactivate_mark
= odeactivate
;
6962 /* Restore waiting_for_user_input_p as it was
6963 when we were called, in case the filter clobbered it. */
6964 waiting_for_user_input_p
= waiting
;
6967 if (! EQ (Fcurrent_buffer (), obuffer
)
6968 || ! EQ (current_buffer
->keymap
, okeymap
))
6970 /* But do it only if the caller is actually going to read events.
6971 Otherwise there's no need to make him wake up, and it could
6972 cause trouble (for example it would make sit_for return). */
6973 if (waiting_for_user_input_p
== -1)
6974 record_asynch_buffer_change ();
6976 unbind_to (count
, Qnil
);
6979 /* Report all recent events of a change in process status
6980 (either run the sentinel or output a message).
6981 This is usually done while Emacs is waiting for keyboard input
6982 but can be done at other times.
6984 Return positive if any input was received from WAIT_PROC (or from
6985 any process if WAIT_PROC is null), zero if input was attempted but
6986 none received, and negative if we didn't even try. */
6989 status_notify (struct Lisp_Process
*deleting_process
,
6990 struct Lisp_Process
*wait_proc
)
6993 Lisp_Object tail
, msg
;
6994 int got_some_output
= -1;
6999 /* Set this now, so that if new processes are created by sentinels
7000 that we run, we get called again to handle their status changes. */
7001 update_tick
= process_tick
;
7003 FOR_EACH_PROCESS (tail
, proc
)
7006 register struct Lisp_Process
*p
= XPROCESS (proc
);
7008 if (p
->tick
!= p
->update_tick
)
7010 p
->update_tick
= p
->tick
;
7012 /* If process is still active, read any output that remains. */
7013 while (! EQ (p
->filter
, Qt
)
7014 && ! EQ (p
->status
, Qconnect
)
7015 && ! EQ (p
->status
, Qlisten
)
7016 /* Network or serial process not stopped: */
7017 && ! EQ (p
->command
, Qt
)
7019 && p
!= deleting_process
)
7021 int nread
= read_process_output (proc
, p
->infd
);
7022 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
))
7023 && got_some_output
< nread
)
7024 got_some_output
= nread
;
7029 /* Get the text to use for the message. */
7030 if (p
->raw_status_new
)
7032 msg
= status_message (p
);
7034 /* If process is terminated, deactivate it or delete it. */
7036 if (CONSP (p
->status
))
7037 symbol
= XCAR (p
->status
);
7039 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
7040 || EQ (symbol
, Qclosed
))
7042 if (delete_exited_processes
)
7043 remove_process (proc
);
7045 deactivate_process (proc
);
7048 /* The actions above may have further incremented p->tick.
7049 So set p->update_tick again so that an error in the sentinel will
7050 not cause this code to be run again. */
7051 p
->update_tick
= p
->tick
;
7052 /* Now output the message suitably. */
7053 exec_sentinel (proc
, msg
);
7054 if (BUFFERP (p
->buffer
))
7055 /* In case it uses %s in mode-line-format. */
7056 bset_update_mode_line (XBUFFER (p
->buffer
));
7060 return got_some_output
;
7063 DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel
,
7064 Sinternal_default_process_sentinel
, 2, 2, 0,
7065 doc
: /* Function used as default sentinel for processes.
7066 This inserts a status message into the process's buffer, if there is one. */)
7067 (Lisp_Object proc
, Lisp_Object msg
)
7069 Lisp_Object buffer
, symbol
;
7070 struct Lisp_Process
*p
;
7071 CHECK_PROCESS (proc
);
7072 p
= XPROCESS (proc
);
7076 symbol
= XCAR (symbol
);
7078 if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
7081 struct buffer
*old
= current_buffer
;
7082 ptrdiff_t opoint
, opoint_byte
;
7083 ptrdiff_t before
, before_byte
;
7085 /* Avoid error if buffer is deleted
7086 (probably that's why the process is dead, too). */
7087 if (!BUFFER_LIVE_P (XBUFFER (buffer
)))
7089 Fset_buffer (buffer
);
7091 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
7092 msg
= (code_convert_string_norecord
7093 (msg
, Vlocale_coding_system
, 1));
7096 opoint_byte
= PT_BYTE
;
7097 /* Insert new output into buffer
7098 at the current end-of-output marker,
7099 thus preserving logical ordering of input and output. */
7100 if (XMARKER (p
->mark
)->buffer
)
7101 Fgoto_char (p
->mark
);
7103 SET_PT_BOTH (ZV
, ZV_BYTE
);
7106 before_byte
= PT_BYTE
;
7108 tem
= BVAR (current_buffer
, read_only
);
7109 bset_read_only (current_buffer
, Qnil
);
7110 insert_string ("\nProcess ");
7111 { /* FIXME: temporary kludge. */
7112 Lisp_Object tem2
= p
->name
; Finsert (1, &tem2
); }
7113 insert_string (" ");
7115 bset_read_only (current_buffer
, tem
);
7116 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
7118 if (opoint
>= before
)
7119 SET_PT_BOTH (opoint
+ (PT
- before
),
7120 opoint_byte
+ (PT_BYTE
- before_byte
));
7122 SET_PT_BOTH (opoint
, opoint_byte
);
7124 set_buffer_internal (old
);
7130 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
7131 Sset_process_coding_system
, 1, 3, 0,
7132 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
7133 DECODING will be used to decode subprocess output and ENCODING to
7134 encode subprocess input. */)
7135 (Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
7137 CHECK_PROCESS (process
);
7139 struct Lisp_Process
*p
= XPROCESS (process
);
7141 Fcheck_coding_system (decoding
);
7142 Fcheck_coding_system (encoding
);
7143 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7144 pset_decode_coding_system (p
, decoding
);
7145 pset_encode_coding_system (p
, encoding
);
7147 /* If the sockets haven't been set up yet, the final setup part of
7148 this will be called asynchronously. */
7149 if (p
->infd
< 0 || p
->outfd
< 0)
7152 setup_process_coding_systems (process
);
7157 DEFUN ("process-coding-system",
7158 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7159 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7160 (register Lisp_Object process
)
7162 CHECK_PROCESS (process
);
7163 return Fcons (XPROCESS (process
)->decode_coding_system
,
7164 XPROCESS (process
)->encode_coding_system
);
7167 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7168 Sset_process_filter_multibyte
, 2, 2, 0,
7169 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7170 If FLAG is non-nil, the filter is given multibyte strings.
7171 If FLAG is nil, the filter is given unibyte strings. In this case,
7172 all character code conversion except for end-of-line conversion is
7174 (Lisp_Object process
, Lisp_Object flag
)
7176 CHECK_PROCESS (process
);
7178 struct Lisp_Process
*p
= XPROCESS (process
);
7180 pset_decode_coding_system
7181 (p
, raw_text_coding_system (p
->decode_coding_system
));
7183 /* If the sockets haven't been set up yet, the final setup part of
7184 this will be called asynchronously. */
7185 if (p
->infd
< 0 || p
->outfd
< 0)
7188 setup_process_coding_systems (process
);
7193 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7194 Sprocess_filter_multibyte_p
, 1, 1, 0,
7195 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7196 (Lisp_Object process
)
7198 CHECK_PROCESS (process
);
7199 struct Lisp_Process
*p
= XPROCESS (process
);
7202 struct coding_system
*coding
= proc_decode_coding_system
[p
->infd
];
7203 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7212 add_gpm_wait_descriptor (int desc
)
7214 add_keyboard_wait_descriptor (desc
);
7218 delete_gpm_wait_descriptor (int desc
)
7220 delete_keyboard_wait_descriptor (desc
);
7225 # ifdef USABLE_SIGIO
7227 /* Return true if *MASK has a bit set
7228 that corresponds to one of the keyboard input descriptors. */
7231 keyboard_bit_set (fd_set
*mask
)
7235 for (fd
= 0; fd
<= max_input_desc
; fd
++)
7236 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7237 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7244 #else /* not subprocesses */
7246 /* Defined in msdos.c. */
7247 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
7248 struct timespec
*, void *);
7250 /* Implementation of wait_reading_process_output, assuming that there
7251 are no subprocesses. Used only by the MS-DOS build.
7253 Wait for timeout to elapse and/or keyboard input to be available.
7257 If negative, gobble data immediately available but don't wait for any.
7260 an additional duration to wait, measured in nanoseconds
7261 If TIME_LIMIT is zero, then:
7262 If NSECS == 0, there is no limit.
7263 If NSECS > 0, the timeout consists of NSECS only.
7264 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
7267 0 to ignore keyboard input, or
7268 1 to return when input is available, or
7269 -1 means caller will actually read the input, so don't throw to
7272 see full version for other parameters. We know that wait_proc will
7273 always be NULL, since `subprocesses' isn't defined.
7275 DO_DISPLAY means redisplay should be done to show subprocess
7276 output that arrives.
7278 Return -1 signifying we got no output and did not try. */
7281 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
7283 Lisp_Object wait_for_cell
,
7284 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
7287 struct timespec end_time
, timeout
;
7288 enum { MINIMUM
= -1, TIMEOUT
, INFINITY
} wait
;
7290 if (TYPE_MAXIMUM (time_t) < time_limit
)
7291 time_limit
= TYPE_MAXIMUM (time_t);
7293 if (time_limit
< 0 || nsecs
< 0)
7295 else if (time_limit
> 0 || nsecs
> 0)
7298 end_time
= timespec_add (current_timespec (),
7299 make_timespec (time_limit
, nsecs
));
7304 /* Turn off periodic alarms (in case they are in use)
7305 and then turn off any other atimers,
7306 because the select emulator uses alarms. */
7308 turn_on_atimers (0);
7312 bool timeout_reduced_for_timers
= false;
7313 fd_set waitchannels
;
7316 /* If calling from keyboard input, do not quit
7317 since we want to return C-g as an input character.
7318 Otherwise, do pending quit if requested. */
7322 /* Exit now if the cell we're waiting for became non-nil. */
7323 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7326 /* Compute time from now till when time limit is up. */
7327 /* Exit if already run out. */
7328 if (wait
== TIMEOUT
)
7330 struct timespec now
= current_timespec ();
7331 if (timespec_cmp (end_time
, now
) <= 0)
7333 timeout
= timespec_sub (end_time
, now
);
7336 timeout
= make_timespec (wait
< TIMEOUT
? 0 : 100000, 0);
7338 /* If our caller will not immediately handle keyboard events,
7339 run timer events directly.
7340 (Callers that will immediately read keyboard events
7341 call timer_delay on their own.) */
7342 if (NILP (wait_for_cell
))
7344 struct timespec timer_delay
;
7348 unsigned old_timers_run
= timers_run
;
7349 timer_delay
= timer_check ();
7350 if (timers_run
!= old_timers_run
&& do_display
)
7351 /* We must retry, since a timer may have requeued itself
7352 and that could alter the time delay. */
7353 redisplay_preserve_echo_area (14);
7357 while (!detect_input_pending ());
7359 /* If there is unread keyboard input, also return. */
7361 && requeued_events_pending_p ())
7364 if (timespec_valid_p (timer_delay
))
7366 if (timespec_cmp (timer_delay
, timeout
) < 0)
7368 timeout
= timer_delay
;
7369 timeout_reduced_for_timers
= true;
7374 /* Cause C-g and alarm signals to take immediate action,
7375 and cause input available signals to zero out timeout. */
7377 set_waiting_for_input (&timeout
);
7379 /* If a frame has been newly mapped and needs updating,
7380 reprocess its display stuff. */
7381 if (frame_garbaged
&& do_display
)
7383 clear_waiting_for_input ();
7384 redisplay_preserve_echo_area (15);
7386 set_waiting_for_input (&timeout
);
7389 /* Wait till there is something to do. */
7390 FD_ZERO (&waitchannels
);
7391 if (read_kbd
&& detect_input_pending ())
7395 if (read_kbd
|| !NILP (wait_for_cell
))
7396 FD_SET (0, &waitchannels
);
7397 nfds
= pselect (1, &waitchannels
, NULL
, NULL
, &timeout
, NULL
);
7402 /* Make C-g and alarm signals set flags again. */
7403 clear_waiting_for_input ();
7405 /* If we woke up due to SIGWINCH, actually change size now. */
7406 do_pending_window_change (0);
7408 if (wait
< INFINITY
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7409 /* We waited the full specified time, so return now. */
7414 /* If the system call was interrupted, then go around the
7416 if (xerrno
== EINTR
)
7417 FD_ZERO (&waitchannels
);
7419 report_file_errno ("Failed select", Qnil
, xerrno
);
7422 /* Check for keyboard input. */
7425 && detect_input_pending_run_timers (do_display
))
7427 swallow_events (do_display
);
7428 if (detect_input_pending_run_timers (do_display
))
7432 /* If there is unread keyboard input, also return. */
7434 && requeued_events_pending_p ())
7437 /* If wait_for_cell. check for keyboard input
7438 but don't run any timers.
7439 ??? (It seems wrong to me to check for keyboard
7440 input at all when wait_for_cell, but the code
7441 has been this way since July 1994.
7442 Try changing this after version 19.31.) */
7443 if (! NILP (wait_for_cell
)
7444 && detect_input_pending ())
7446 swallow_events (do_display
);
7447 if (detect_input_pending ())
7451 /* Exit now if the cell we're waiting for became non-nil. */
7452 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7461 #endif /* not subprocesses */
7463 /* The following functions are needed even if async subprocesses are
7464 not supported. Some of them are no-op stubs in that case. */
7468 /* Add FD, which is a descriptor returned by timerfd_create,
7469 to the set of non-keyboard input descriptors. */
7472 add_timer_wait_descriptor (int fd
)
7474 FD_SET (fd
, &input_wait_mask
);
7475 FD_SET (fd
, &non_keyboard_wait_mask
);
7476 FD_SET (fd
, &non_process_wait_mask
);
7477 fd_callback_info
[fd
].func
= timerfd_callback
;
7478 fd_callback_info
[fd
].data
= NULL
;
7479 fd_callback_info
[fd
].condition
|= FOR_READ
;
7480 if (fd
> max_input_desc
)
7481 max_input_desc
= fd
;
7484 #endif /* HAVE_TIMERFD */
7486 /* Add DESC to the set of keyboard input descriptors. */
7489 add_keyboard_wait_descriptor (int desc
)
7491 #ifdef subprocesses /* Actually means "not MSDOS". */
7492 FD_SET (desc
, &input_wait_mask
);
7493 FD_SET (desc
, &non_process_wait_mask
);
7494 if (desc
> max_input_desc
)
7495 max_input_desc
= desc
;
7499 /* From now on, do not expect DESC to give keyboard input. */
7502 delete_keyboard_wait_descriptor (int desc
)
7505 FD_CLR (desc
, &input_wait_mask
);
7506 FD_CLR (desc
, &non_process_wait_mask
);
7507 delete_input_desc (desc
);
7511 /* Setup coding systems of PROCESS. */
7514 setup_process_coding_systems (Lisp_Object process
)
7517 struct Lisp_Process
*p
= XPROCESS (process
);
7519 int outch
= p
->outfd
;
7520 Lisp_Object coding_system
;
7522 if (inch
< 0 || outch
< 0)
7525 if (!proc_decode_coding_system
[inch
])
7526 proc_decode_coding_system
[inch
] = xmalloc (sizeof (struct coding_system
));
7527 coding_system
= p
->decode_coding_system
;
7528 if (EQ (p
->filter
, Qinternal_default_process_filter
)
7529 && BUFFERP (p
->buffer
))
7531 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
7532 coding_system
= raw_text_coding_system (coding_system
);
7534 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
7536 if (!proc_encode_coding_system
[outch
])
7537 proc_encode_coding_system
[outch
] = xmalloc (sizeof (struct coding_system
));
7538 setup_coding_system (p
->encode_coding_system
,
7539 proc_encode_coding_system
[outch
]);
7543 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7544 doc
: /* Return the (or a) live process associated with BUFFER.
7545 BUFFER may be a buffer or the name of one.
7546 Return nil if all processes associated with BUFFER have been
7547 deleted or killed. */)
7548 (register Lisp_Object buffer
)
7551 register Lisp_Object buf
, tail
, proc
;
7553 if (NILP (buffer
)) return Qnil
;
7554 buf
= Fget_buffer (buffer
);
7555 if (NILP (buf
)) return Qnil
;
7557 FOR_EACH_PROCESS (tail
, proc
)
7558 if (EQ (XPROCESS (proc
)->buffer
, buf
))
7560 #endif /* subprocesses */
7564 DEFUN ("process-inherit-coding-system-flag",
7565 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7567 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7568 If this flag is t, `buffer-file-coding-system' of the buffer
7569 associated with PROCESS will inherit the coding system used to decode
7570 the process output. */)
7571 (register Lisp_Object process
)
7574 CHECK_PROCESS (process
);
7575 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7577 /* Ignore the argument and return the value of
7578 inherit-process-coding-system. */
7579 return inherit_process_coding_system
? Qt
: Qnil
;
7583 /* Kill all processes associated with `buffer'.
7584 If `buffer' is nil, kill all processes. */
7587 kill_buffer_processes (Lisp_Object buffer
)
7590 Lisp_Object tail
, proc
;
7592 FOR_EACH_PROCESS (tail
, proc
)
7593 if (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
))
7595 if (NETCONN_P (proc
) || SERIALCONN_P (proc
) || PIPECONN_P (proc
))
7596 Fdelete_process (proc
);
7597 else if (XPROCESS (proc
)->infd
>= 0)
7598 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7600 #else /* subprocesses */
7601 /* Since we have no subprocesses, this does nothing. */
7602 #endif /* subprocesses */
7605 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
7606 Swaiting_for_user_input_p
, 0, 0, 0,
7607 doc
: /* Return non-nil if Emacs is waiting for input from the user.
7608 This is intended for use by asynchronous process output filters and sentinels. */)
7612 return (waiting_for_user_input_p
? Qt
: Qnil
);
7618 /* Stop reading input from keyboard sources. */
7621 hold_keyboard_input (void)
7626 /* Resume reading input from keyboard sources. */
7629 unhold_keyboard_input (void)
7634 /* Return true if keyboard input is on hold, zero otherwise. */
7637 kbd_on_hold_p (void)
7639 return kbd_is_on_hold
;
7643 /* Enumeration of and access to system processes a-la ps(1). */
7645 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7647 doc
: /* Return a list of numerical process IDs of all running processes.
7648 If this functionality is unsupported, return nil.
7650 See `process-attributes' for getting attributes of a process given its ID. */)
7653 return list_system_processes ();
7656 DEFUN ("process-attributes", Fprocess_attributes
,
7657 Sprocess_attributes
, 1, 1, 0,
7658 doc
: /* Return attributes of the process given by its PID, a number.
7660 Value is an alist where each element is a cons cell of the form
7664 If this functionality is unsupported, the value is nil.
7666 See `list-system-processes' for getting a list of all process IDs.
7668 The KEYs of the attributes that this function may return are listed
7669 below, together with the type of the associated VALUE (in parentheses).
7670 Not all platforms support all of these attributes; unsupported
7671 attributes will not appear in the returned alist.
7672 Unless explicitly indicated otherwise, numbers can have either
7673 integer or floating point values.
7675 euid -- Effective user User ID of the process (number)
7676 user -- User name corresponding to euid (string)
7677 egid -- Effective user Group ID of the process (number)
7678 group -- Group name corresponding to egid (string)
7679 comm -- Command name (executable name only) (string)
7680 state -- Process state code, such as "S", "R", or "T" (string)
7681 ppid -- Parent process ID (number)
7682 pgrp -- Process group ID (number)
7683 sess -- Session ID, i.e. process ID of session leader (number)
7684 ttname -- Controlling tty name (string)
7685 tpgid -- ID of foreground process group on the process's tty (number)
7686 minflt -- number of minor page faults (number)
7687 majflt -- number of major page faults (number)
7688 cminflt -- cumulative number of minor page faults (number)
7689 cmajflt -- cumulative number of major page faults (number)
7690 utime -- user time used by the process, in (current-time) format,
7691 which is a list of integers (HIGH LOW USEC PSEC)
7692 stime -- system time used by the process (current-time)
7693 time -- sum of utime and stime (current-time)
7694 cutime -- user time used by the process and its children (current-time)
7695 cstime -- system time used by the process and its children (current-time)
7696 ctime -- sum of cutime and cstime (current-time)
7697 pri -- priority of the process (number)
7698 nice -- nice value of the process (number)
7699 thcount -- process thread count (number)
7700 start -- time the process started (current-time)
7701 vsize -- virtual memory size of the process in KB's (number)
7702 rss -- resident set size of the process in KB's (number)
7703 etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format
7704 pcpu -- percents of CPU time used by the process (floating-point number)
7705 pmem -- percents of total physical memory used by process's resident set
7706 (floating-point number)
7707 args -- command line which invoked the process (string). */)
7710 return system_process_attributes (pid
);
7714 /* Arrange to catch SIGCHLD if this hasn't already been arranged.
7715 Invoke this after init_process_emacs, and after glib and/or GNUstep
7716 futz with the SIGCHLD handler, but before Emacs forks any children.
7717 This function's caller should block SIGCHLD. */
7720 catch_child_signal (void)
7722 struct sigaction action
, old_action
;
7724 emacs_sigaction_init (&action
, deliver_child_signal
);
7725 block_child_signal (&oldset
);
7726 sigaction (SIGCHLD
, &action
, &old_action
);
7727 eassert (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7728 || ! (old_action
.sa_flags
& SA_SIGINFO
));
7730 if (old_action
.sa_handler
!= deliver_child_signal
)
7732 = (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7734 : old_action
.sa_handler
);
7735 unblock_child_signal (&oldset
);
7737 #endif /* subprocesses */
7740 /* This is not called "init_process" because that is the name of a
7741 Mach system call, so it would cause problems on Darwin systems. */
7743 init_process_emacs (int sockfd
)
7748 inhibit_sentinels
= 0;
7751 if (! noninteractive
|| initialized
)
7754 #if defined HAVE_GLIB && !defined WINDOWSNT
7755 /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
7756 this should always fail, but is enough to initialize glib's
7757 private SIGCHLD handler, allowing catch_child_signal to copy
7758 it into lib_child_handler. */
7759 g_source_unref (g_child_watch_source_new (getpid ()));
7761 catch_child_signal ();
7764 FD_ZERO (&input_wait_mask
);
7765 FD_ZERO (&non_keyboard_wait_mask
);
7766 FD_ZERO (&non_process_wait_mask
);
7767 FD_ZERO (&write_mask
);
7768 max_process_desc
= max_input_desc
= -1;
7769 external_sock_fd
= sockfd
;
7770 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7772 FD_ZERO (&connect_wait_mask
);
7773 num_pending_connects
= 0;
7775 process_output_delay_count
= 0;
7776 process_output_skip
= 0;
7778 /* Don't do this, it caused infinite select loops. The display
7779 method should call add_keyboard_wait_descriptor on stdin if it
7782 FD_SET (0, &input_wait_mask
);
7785 Vprocess_alist
= Qnil
;
7786 deleted_pid_list
= Qnil
;
7787 for (i
= 0; i
< FD_SETSIZE
; i
++)
7789 chan_process
[i
] = Qnil
;
7790 proc_buffered_char
[i
] = -1;
7792 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7793 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7794 #ifdef DATAGRAM_SOCKETS
7795 memset (datagram_address
, 0, sizeof datagram_address
);
7798 #if defined (DARWIN_OS)
7799 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7800 processes. As such, we only change the default value. */
7803 char const *release
= (STRINGP (Voperating_system_release
)
7804 ? SSDATA (Voperating_system_release
)
7806 if (!release
|| !release
[0] || (release
[0] < '7' && release
[1] == '.')) {
7807 Vprocess_connection_type
= Qnil
;
7811 #endif /* subprocesses */
7816 syms_of_process (void)
7820 DEFSYM (Qprocessp
, "processp");
7821 DEFSYM (Qrun
, "run");
7822 DEFSYM (Qstop
, "stop");
7823 DEFSYM (Qsignal
, "signal");
7825 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7828 DEFSYM (Qopen
, "open");
7829 DEFSYM (Qclosed
, "closed");
7830 DEFSYM (Qconnect
, "connect");
7831 DEFSYM (Qfailed
, "failed");
7832 DEFSYM (Qlisten
, "listen");
7833 DEFSYM (Qlocal
, "local");
7834 DEFSYM (Qipv4
, "ipv4");
7836 DEFSYM (Qipv6
, "ipv6");
7838 DEFSYM (Qdatagram
, "datagram");
7839 DEFSYM (Qseqpacket
, "seqpacket");
7841 DEFSYM (QCport
, ":port");
7842 DEFSYM (QCspeed
, ":speed");
7843 DEFSYM (QCprocess
, ":process");
7845 DEFSYM (QCbytesize
, ":bytesize");
7846 DEFSYM (QCstopbits
, ":stopbits");
7847 DEFSYM (QCparity
, ":parity");
7848 DEFSYM (Qodd
, "odd");
7849 DEFSYM (Qeven
, "even");
7850 DEFSYM (QCflowcontrol
, ":flowcontrol");
7853 DEFSYM (QCsummary
, ":summary");
7855 DEFSYM (Qreal
, "real");
7856 DEFSYM (Qnetwork
, "network");
7857 DEFSYM (Qserial
, "serial");
7858 DEFSYM (Qpipe
, "pipe");
7859 DEFSYM (QCbuffer
, ":buffer");
7860 DEFSYM (QChost
, ":host");
7861 DEFSYM (QCservice
, ":service");
7862 DEFSYM (QClocal
, ":local");
7863 DEFSYM (QCremote
, ":remote");
7864 DEFSYM (QCcoding
, ":coding");
7865 DEFSYM (QCserver
, ":server");
7866 DEFSYM (QCnowait
, ":nowait");
7867 DEFSYM (QCsentinel
, ":sentinel");
7868 DEFSYM (QCuse_external_socket
, ":use-external-socket");
7869 DEFSYM (QCtls_parameters
, ":tls-parameters");
7870 DEFSYM (Qnsm_verify_connection
, "nsm-verify-connection");
7871 DEFSYM (QClog
, ":log");
7872 DEFSYM (QCnoquery
, ":noquery");
7873 DEFSYM (QCstop
, ":stop");
7874 DEFSYM (QCplist
, ":plist");
7875 DEFSYM (QCcommand
, ":command");
7876 DEFSYM (QCconnection_type
, ":connection-type");
7877 DEFSYM (QCstderr
, ":stderr");
7878 DEFSYM (Qpty
, "pty");
7879 DEFSYM (Qpipe
, "pipe");
7881 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7883 staticpro (&Vprocess_alist
);
7884 staticpro (&deleted_pid_list
);
7886 #endif /* subprocesses */
7888 DEFSYM (QCname
, ":name");
7889 DEFSYM (QCtype
, ":type");
7891 DEFSYM (Qeuid
, "euid");
7892 DEFSYM (Qegid
, "egid");
7893 DEFSYM (Quser
, "user");
7894 DEFSYM (Qgroup
, "group");
7895 DEFSYM (Qcomm
, "comm");
7896 DEFSYM (Qstate
, "state");
7897 DEFSYM (Qppid
, "ppid");
7898 DEFSYM (Qpgrp
, "pgrp");
7899 DEFSYM (Qsess
, "sess");
7900 DEFSYM (Qttname
, "ttname");
7901 DEFSYM (Qtpgid
, "tpgid");
7902 DEFSYM (Qminflt
, "minflt");
7903 DEFSYM (Qmajflt
, "majflt");
7904 DEFSYM (Qcminflt
, "cminflt");
7905 DEFSYM (Qcmajflt
, "cmajflt");
7906 DEFSYM (Qutime
, "utime");
7907 DEFSYM (Qstime
, "stime");
7908 DEFSYM (Qtime
, "time");
7909 DEFSYM (Qcutime
, "cutime");
7910 DEFSYM (Qcstime
, "cstime");
7911 DEFSYM (Qctime
, "ctime");
7913 DEFSYM (Qinternal_default_process_sentinel
,
7914 "internal-default-process-sentinel");
7915 DEFSYM (Qinternal_default_process_filter
,
7916 "internal-default-process-filter");
7918 DEFSYM (Qpri
, "pri");
7919 DEFSYM (Qnice
, "nice");
7920 DEFSYM (Qthcount
, "thcount");
7921 DEFSYM (Qstart
, "start");
7922 DEFSYM (Qvsize
, "vsize");
7923 DEFSYM (Qrss
, "rss");
7924 DEFSYM (Qetime
, "etime");
7925 DEFSYM (Qpcpu
, "pcpu");
7926 DEFSYM (Qpmem
, "pmem");
7927 DEFSYM (Qargs
, "args");
7929 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7930 doc
: /* Non-nil means delete processes immediately when they exit.
7931 A value of nil means don't delete them until `list-processes' is run. */);
7933 delete_exited_processes
= 1;
7936 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7937 doc
: /* Control type of device used to communicate with subprocesses.
7938 Values are nil to use a pipe, or t or `pty' to use a pty.
7939 The value has no effect if the system has no ptys or if all ptys are busy:
7940 then a pipe is used in any case.
7941 The value takes effect when `start-process' is called. */);
7942 Vprocess_connection_type
= Qt
;
7944 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7945 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7946 On some systems, when Emacs reads the output from a subprocess, the output data
7947 is read in very small blocks, potentially resulting in very poor performance.
7948 This behavior can be remedied to some extent by setting this variable to a
7949 non-nil value, as it will automatically delay reading from such processes, to
7950 allow them to produce more output before Emacs tries to read it.
7951 If the value is t, the delay is reset after each write to the process; any other
7952 non-nil value means that the delay is not reset on write.
7953 The variable takes effect when `start-process' is called. */);
7954 Vprocess_adaptive_read_buffering
= Qt
;
7956 defsubr (&Sprocessp
);
7957 defsubr (&Sget_process
);
7958 defsubr (&Sdelete_process
);
7959 defsubr (&Sprocess_status
);
7960 defsubr (&Sprocess_exit_status
);
7961 defsubr (&Sprocess_id
);
7962 defsubr (&Sprocess_name
);
7963 defsubr (&Sprocess_tty_name
);
7964 defsubr (&Sprocess_command
);
7965 defsubr (&Sset_process_buffer
);
7966 defsubr (&Sprocess_buffer
);
7967 defsubr (&Sprocess_mark
);
7968 defsubr (&Sset_process_filter
);
7969 defsubr (&Sprocess_filter
);
7970 defsubr (&Sset_process_sentinel
);
7971 defsubr (&Sprocess_sentinel
);
7972 defsubr (&Sset_process_window_size
);
7973 defsubr (&Sset_process_inherit_coding_system_flag
);
7974 defsubr (&Sset_process_query_on_exit_flag
);
7975 defsubr (&Sprocess_query_on_exit_flag
);
7976 defsubr (&Sprocess_contact
);
7977 defsubr (&Sprocess_plist
);
7978 defsubr (&Sset_process_plist
);
7979 defsubr (&Sprocess_list
);
7980 defsubr (&Smake_process
);
7981 defsubr (&Smake_pipe_process
);
7982 defsubr (&Sserial_process_configure
);
7983 defsubr (&Smake_serial_process
);
7984 defsubr (&Sset_network_process_option
);
7985 defsubr (&Smake_network_process
);
7986 defsubr (&Sformat_network_address
);
7987 defsubr (&Snetwork_interface_list
);
7988 defsubr (&Snetwork_interface_info
);
7989 #ifdef DATAGRAM_SOCKETS
7990 defsubr (&Sprocess_datagram_address
);
7991 defsubr (&Sset_process_datagram_address
);
7993 defsubr (&Saccept_process_output
);
7994 defsubr (&Sprocess_send_region
);
7995 defsubr (&Sprocess_send_string
);
7996 defsubr (&Sinterrupt_process
);
7997 defsubr (&Skill_process
);
7998 defsubr (&Squit_process
);
7999 defsubr (&Sstop_process
);
8000 defsubr (&Scontinue_process
);
8001 defsubr (&Sprocess_running_child_p
);
8002 defsubr (&Sprocess_send_eof
);
8003 defsubr (&Ssignal_process
);
8004 defsubr (&Swaiting_for_user_input_p
);
8005 defsubr (&Sprocess_type
);
8006 defsubr (&Sinternal_default_process_sentinel
);
8007 defsubr (&Sinternal_default_process_filter
);
8008 defsubr (&Sset_process_coding_system
);
8009 defsubr (&Sprocess_coding_system
);
8010 defsubr (&Sset_process_filter_multibyte
);
8011 defsubr (&Sprocess_filter_multibyte_p
);
8013 #endif /* subprocesses */
8015 defsubr (&Sget_buffer_process
);
8016 defsubr (&Sprocess_inherit_coding_system_flag
);
8017 defsubr (&Slist_system_processes
);
8018 defsubr (&Sprocess_attributes
);
8021 Lisp_Object subfeatures
= Qnil
;
8022 const struct socket_options
*sopt
;
8024 #define ADD_SUBFEATURE(key, val) \
8025 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
8027 ADD_SUBFEATURE (QCnowait
, Qt
);
8028 #ifdef DATAGRAM_SOCKETS
8029 ADD_SUBFEATURE (QCtype
, Qdatagram
);
8031 #ifdef HAVE_SEQPACKET
8032 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
8034 #ifdef HAVE_LOCAL_SOCKETS
8035 ADD_SUBFEATURE (QCfamily
, Qlocal
);
8037 ADD_SUBFEATURE (QCfamily
, Qipv4
);
8039 ADD_SUBFEATURE (QCfamily
, Qipv6
);
8041 #ifdef HAVE_GETSOCKNAME
8042 ADD_SUBFEATURE (QCservice
, Qt
);
8044 ADD_SUBFEATURE (QCserver
, Qt
);
8046 for (sopt
= socket_options
; sopt
->name
; sopt
++)
8047 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
8049 Fprovide (intern_c_string ("make-network-process"), subfeatures
);