1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2013 Free Software
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h> /* Some typedefs are used in sys/file.h. */
34 /* Only MS-DOS does not define `subprocesses'. */
37 #include <sys/socket.h>
39 #include <netinet/in.h>
40 #include <arpa/inet.h>
42 /* Are local (unix) sockets supported? */
43 #if defined (HAVE_SYS_UN_H)
44 #if !defined (AF_LOCAL) && defined (AF_UNIX)
45 #define AF_LOCAL AF_UNIX
48 #define HAVE_LOCAL_SOCKETS
53 #include <sys/ioctl.h>
54 #if defined (HAVE_NET_IF_H)
56 #endif /* HAVE_NET_IF_H */
58 #if defined (HAVE_IFADDRS_H)
59 /* Must be after net/if.h */
62 /* We only use structs from this header when we use getifaddrs. */
63 #if defined (HAVE_NET_IF_DL_H)
64 #include <net/if_dl.h>
74 # include <sys/stream.h>
75 # include <sys/stropts.h>
79 #include <arpa/nameser.h>
95 #endif /* subprocesses */
101 #include "character.h"
106 #include "termhooks.h"
107 #include "termopts.h"
108 #include "commands.h"
109 #include "keyboard.h"
110 #include "blockinput.h"
111 #include "dispextern.h"
112 #include "composite.h"
114 #include "sysselect.h"
115 #include "syssignal.h"
121 #ifdef HAVE_WINDOW_SYSTEM
123 #endif /* HAVE_WINDOW_SYSTEM */
126 #include "xgselect.h"
133 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
134 struct timespec
*, void *);
138 # define SOCK_CLOEXEC 0
143 /* Emulate GNU/Linux accept4 and socket well enough for this module. */
146 close_on_exec (int fd
)
149 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
154 accept4 (int sockfd
, struct sockaddr
*addr
, socklen_t
*addrlen
, int flags
)
156 return close_on_exec (accept (sockfd
, addr
, addrlen
));
160 process_socket (int domain
, int type
, int protocol
)
162 return close_on_exec (socket (domain
, type
, protocol
));
165 # define socket(domain, type, protocol) process_socket (domain, type, protocol)
168 /* Work around GCC 4.7.0 bug with strict overflow checking; see
169 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>.
170 These lines can be removed once the GCC bug is fixed. */
171 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
172 # pragma GCC diagnostic ignored "-Wstrict-overflow"
175 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
176 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
177 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
178 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
179 Lisp_Object QCname
, QCtype
;
181 /* True if keyboard input is on hold, zero otherwise. */
183 static bool kbd_is_on_hold
;
185 /* Nonzero means don't run process sentinels. This is used
187 bool inhibit_sentinels
;
191 Lisp_Object Qprocessp
;
192 static Lisp_Object Qrun
, Qstop
, Qsignal
;
193 static Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
195 static Lisp_Object Qipv4
, Qdatagram
, Qseqpacket
;
196 static Lisp_Object Qreal
, Qnetwork
, Qserial
;
198 static Lisp_Object Qipv6
;
200 static Lisp_Object QCport
, QCprocess
;
202 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
203 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
204 static Lisp_Object QCbuffer
, QChost
, QCservice
;
205 static Lisp_Object QClocal
, QCremote
, QCcoding
;
206 static Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
207 static Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
208 static Lisp_Object Qlast_nonmenu_event
;
209 static Lisp_Object Qinternal_default_process_sentinel
;
210 static Lisp_Object Qinternal_default_process_filter
;
212 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
213 #define NETCONN1_P(p) (EQ (p->type, Qnetwork))
214 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
215 #define SERIALCONN1_P(p) (EQ (p->type, Qserial))
217 /* Number of events of change of status of a process. */
218 static EMACS_INT process_tick
;
219 /* Number of events for which the user or sentinel has been notified. */
220 static EMACS_INT update_tick
;
222 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
224 /* Only W32 has this, it really means that select can't take write mask. */
225 #ifdef BROKEN_NON_BLOCKING_CONNECT
226 #undef NON_BLOCKING_CONNECT
227 #define SELECT_CANT_DO_WRITE_MASK
229 #ifndef NON_BLOCKING_CONNECT
231 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
232 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
233 #define NON_BLOCKING_CONNECT
234 #endif /* EWOULDBLOCK || EINPROGRESS */
235 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
236 #endif /* HAVE_SELECT */
237 #endif /* NON_BLOCKING_CONNECT */
238 #endif /* BROKEN_NON_BLOCKING_CONNECT */
240 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
241 this system. We need to read full packets, so we need a
242 "non-destructive" select. So we require either native select,
243 or emulation of select using FIONREAD. */
245 #ifndef BROKEN_DATAGRAM_SOCKETS
246 # if defined HAVE_SELECT || defined USABLE_FIONREAD
247 # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE
248 # define DATAGRAM_SOCKETS
253 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
254 # define HAVE_SEQPACKET
257 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
258 #define ADAPTIVE_READ_BUFFERING
261 #ifdef ADAPTIVE_READ_BUFFERING
262 #define READ_OUTPUT_DELAY_INCREMENT (TIMESPEC_RESOLUTION / 100)
263 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
264 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
266 /* Number of processes which have a non-zero read_output_delay,
267 and therefore might be delayed for adaptive read buffering. */
269 static int process_output_delay_count
;
271 /* True if any process has non-nil read_output_skip. */
273 static bool process_output_skip
;
276 #define process_output_delay_count 0
279 static void create_process (Lisp_Object
, char **, Lisp_Object
);
281 static bool keyboard_bit_set (fd_set
*);
283 static void deactivate_process (Lisp_Object
);
284 static void status_notify (struct Lisp_Process
*);
285 static int read_process_output (Lisp_Object
, int);
286 static void handle_child_signal (int);
287 static void create_pty (Lisp_Object
);
289 /* If we support a window system, turn on the code to poll periodically
290 to detect C-g. It isn't actually used when doing interrupt input. */
291 #ifdef HAVE_WINDOW_SYSTEM
292 #define POLL_FOR_INPUT
295 static Lisp_Object
get_process (register Lisp_Object name
);
296 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
298 /* Mask of bits indicating the descriptors that we wait for input on. */
300 static fd_set input_wait_mask
;
302 /* Mask that excludes keyboard input descriptor(s). */
304 static fd_set non_keyboard_wait_mask
;
306 /* Mask that excludes process input descriptor(s). */
308 static fd_set non_process_wait_mask
;
310 /* Mask for selecting for write. */
312 static fd_set write_mask
;
314 #ifdef NON_BLOCKING_CONNECT
315 /* Mask of bits indicating the descriptors that we wait for connect to
316 complete on. Once they complete, they are removed from this mask
317 and added to the input_wait_mask and non_keyboard_wait_mask. */
319 static fd_set connect_wait_mask
;
321 /* Number of bits set in connect_wait_mask. */
322 static int num_pending_connects
;
323 #endif /* NON_BLOCKING_CONNECT */
325 /* The largest descriptor currently in use for a process object; -1 if none. */
326 static int max_process_desc
;
328 /* The largest descriptor currently in use for input; -1 if none. */
329 static int max_input_desc
;
331 /* Indexed by descriptor, gives the process (if any) for that descriptor */
332 static Lisp_Object chan_process
[FD_SETSIZE
];
334 /* Alist of elements (NAME . PROCESS) */
335 static Lisp_Object Vprocess_alist
;
337 /* Buffered-ahead input char from process, indexed by channel.
338 -1 means empty (no char is buffered).
339 Used on sys V where the only way to tell if there is any
340 output from the process is to read at least one char.
341 Always -1 on systems that support FIONREAD. */
343 static int proc_buffered_char
[FD_SETSIZE
];
345 /* Table of `struct coding-system' for each process. */
346 static struct coding_system
*proc_decode_coding_system
[FD_SETSIZE
];
347 static struct coding_system
*proc_encode_coding_system
[FD_SETSIZE
];
349 #ifdef DATAGRAM_SOCKETS
350 /* Table of `partner address' for datagram sockets. */
351 static struct sockaddr_and_len
{
354 } datagram_address
[FD_SETSIZE
];
355 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
356 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
358 #define DATAGRAM_CHAN_P(chan) (0)
359 #define DATAGRAM_CONN_P(proc) (0)
362 /* FOR_EACH_PROCESS (LIST_VAR, PROC_VAR) followed by a statement is
363 a `for' loop which iterates over processes from Vprocess_alist. */
365 #define FOR_EACH_PROCESS(list_var, proc_var) \
366 FOR_EACH_ALIST_VALUE (Vprocess_alist, list_var, proc_var)
368 /* These setters are used only in this file, so they can be private. */
370 pset_buffer (struct Lisp_Process
*p
, Lisp_Object val
)
375 pset_command (struct Lisp_Process
*p
, Lisp_Object val
)
380 pset_decode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
382 p
->decode_coding_system
= val
;
385 pset_decoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
387 p
->decoding_buf
= val
;
390 pset_encode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
392 p
->encode_coding_system
= val
;
395 pset_encoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
397 p
->encoding_buf
= val
;
400 pset_filter (struct Lisp_Process
*p
, Lisp_Object val
)
402 p
->filter
= NILP (val
) ? Qinternal_default_process_filter
: val
;
405 pset_log (struct Lisp_Process
*p
, Lisp_Object val
)
410 pset_mark (struct Lisp_Process
*p
, Lisp_Object val
)
415 pset_name (struct Lisp_Process
*p
, Lisp_Object val
)
420 pset_plist (struct Lisp_Process
*p
, Lisp_Object val
)
425 pset_sentinel (struct Lisp_Process
*p
, Lisp_Object val
)
427 p
->sentinel
= NILP (val
) ? Qinternal_default_process_sentinel
: val
;
430 pset_status (struct Lisp_Process
*p
, Lisp_Object val
)
435 pset_tty_name (struct Lisp_Process
*p
, Lisp_Object val
)
440 pset_type (struct Lisp_Process
*p
, Lisp_Object val
)
445 pset_write_queue (struct Lisp_Process
*p
, Lisp_Object val
)
447 p
->write_queue
= val
;
452 static struct fd_callback_data
458 int condition
; /* mask of the defines above. */
459 } fd_callback_info
[FD_SETSIZE
];
462 /* Add a file descriptor FD to be monitored for when read is possible.
463 When read is possible, call FUNC with argument DATA. */
466 add_read_fd (int fd
, fd_callback func
, void *data
)
468 eassert (fd
< FD_SETSIZE
);
469 add_keyboard_wait_descriptor (fd
);
471 fd_callback_info
[fd
].func
= func
;
472 fd_callback_info
[fd
].data
= data
;
473 fd_callback_info
[fd
].condition
|= FOR_READ
;
476 /* Stop monitoring file descriptor FD for when read is possible. */
479 delete_read_fd (int fd
)
481 eassert (fd
< FD_SETSIZE
);
482 delete_keyboard_wait_descriptor (fd
);
484 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
485 if (fd_callback_info
[fd
].condition
== 0)
487 fd_callback_info
[fd
].func
= 0;
488 fd_callback_info
[fd
].data
= 0;
492 /* Add a file descriptor FD to be monitored for when write is possible.
493 When write is possible, call FUNC with argument DATA. */
496 add_write_fd (int fd
, fd_callback func
, void *data
)
498 eassert (fd
< FD_SETSIZE
);
499 FD_SET (fd
, &write_mask
);
500 if (fd
> max_input_desc
)
503 fd_callback_info
[fd
].func
= func
;
504 fd_callback_info
[fd
].data
= data
;
505 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
508 /* FD is no longer an input descriptor; update max_input_desc accordingly. */
511 delete_input_desc (int fd
)
513 if (fd
== max_input_desc
)
517 while (0 <= fd
&& ! (FD_ISSET (fd
, &input_wait_mask
)
518 || FD_ISSET (fd
, &write_mask
)));
524 /* Stop monitoring file descriptor FD for when write is possible. */
527 delete_write_fd (int fd
)
529 eassert (fd
< FD_SETSIZE
);
530 FD_CLR (fd
, &write_mask
);
531 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
532 if (fd_callback_info
[fd
].condition
== 0)
534 fd_callback_info
[fd
].func
= 0;
535 fd_callback_info
[fd
].data
= 0;
536 delete_input_desc (fd
);
541 /* Compute the Lisp form of the process status, p->status, from
542 the numeric status that was returned by `wait'. */
544 static Lisp_Object
status_convert (int);
547 update_status (struct Lisp_Process
*p
)
549 eassert (p
->raw_status_new
);
550 pset_status (p
, status_convert (p
->raw_status
));
551 p
->raw_status_new
= 0;
554 /* Convert a process status word in Unix format to
555 the list that we use internally. */
558 status_convert (int w
)
561 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
562 else if (WIFEXITED (w
))
563 return Fcons (Qexit
, Fcons (make_number (WEXITSTATUS (w
)),
564 WCOREDUMP (w
) ? Qt
: Qnil
));
565 else if (WIFSIGNALED (w
))
566 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
567 WCOREDUMP (w
) ? Qt
: Qnil
));
572 /* Given a status-list, extract the three pieces of information
573 and store them individually through the three pointers. */
576 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, bool *coredump
)
590 *code
= XFASTINT (XCAR (tem
));
592 *coredump
= !NILP (tem
);
596 /* Return a string describing a process status list. */
599 status_message (struct Lisp_Process
*p
)
601 Lisp_Object status
= p
->status
;
605 Lisp_Object string
, string2
;
607 decode_status (status
, &symbol
, &code
, &coredump
);
609 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
612 synchronize_system_messages_locale ();
613 signame
= strsignal (code
);
615 string
= build_string ("unknown");
620 string
= build_unibyte_string (signame
);
621 if (! NILP (Vlocale_coding_system
))
622 string
= (code_convert_string_norecord
623 (string
, Vlocale_coding_system
, 0));
624 c1
= STRING_CHAR (SDATA (string
));
627 Faset (string
, make_number (0), make_number (c2
));
629 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
630 return concat2 (string
, string2
);
632 else if (EQ (symbol
, Qexit
))
635 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
637 return build_string ("finished\n");
638 string
= Fnumber_to_string (make_number (code
));
639 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
640 return concat3 (build_string ("exited abnormally with code "),
643 else if (EQ (symbol
, Qfailed
))
645 string
= Fnumber_to_string (make_number (code
));
646 string2
= build_string ("\n");
647 return concat3 (build_string ("failed with code "),
651 return Fcopy_sequence (Fsymbol_name (symbol
));
654 enum { PTY_NAME_SIZE
= 24 };
656 /* Open an available pty, returning a file descriptor.
657 Store into PTY_NAME the file name of the terminal corresponding to the pty.
658 Return -1 on failure. */
661 allocate_pty (char pty_name
[PTY_NAME_SIZE
])
670 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
671 for (i
= 0; i
< 16; i
++)
674 #ifdef PTY_NAME_SPRINTF
677 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
678 #endif /* no PTY_NAME_SPRINTF */
682 #else /* no PTY_OPEN */
683 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
684 #endif /* no PTY_OPEN */
689 /* Set FD's close-on-exec flag. This is needed even if
690 PT_OPEN calls posix_openpt with O_CLOEXEC, since POSIX
691 doesn't require support for that combination.
692 Multithreaded platforms where posix_openpt ignores
693 O_CLOEXEC (or where PTY_OPEN doesn't call posix_openpt)
694 have a race condition between the PTY_OPEN and here. */
695 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
697 /* check to make certain that both sides are available
698 this avoids a nasty yet stupid bug in rlogins */
699 #ifdef PTY_TTY_NAME_SPRINTF
702 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
703 #endif /* no PTY_TTY_NAME_SPRINTF */
704 if (faccessat (AT_FDCWD
, pty_name
, R_OK
| W_OK
, AT_EACCESS
) != 0)
717 #endif /* HAVE_PTYS */
722 make_process (Lisp_Object name
)
724 register Lisp_Object val
, tem
, name1
;
725 register struct Lisp_Process
*p
;
726 char suffix
[sizeof "<>" + INT_STRLEN_BOUND (printmax_t
)];
729 p
= allocate_process ();
730 /* Initialize Lisp data. Note that allocate_process initializes all
731 Lisp data to nil, so do it only for slots which should not be nil. */
732 pset_status (p
, Qrun
);
733 pset_mark (p
, Fmake_marker ());
735 /* Initialize non-Lisp data. Note that allocate_process zeroes out all
736 non-Lisp data, so do it only for slots which should not be zero. */
739 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
743 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
746 /* If name is already in use, modify it until it is unused. */
751 tem
= Fget_process (name1
);
752 if (NILP (tem
)) break;
753 name1
= concat2 (name
, make_formatted_string (suffix
, "<%"pMd
">", i
));
757 pset_sentinel (p
, Qinternal_default_process_sentinel
);
758 pset_filter (p
, Qinternal_default_process_filter
);
759 XSETPROCESS (val
, p
);
760 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
765 remove_process (register Lisp_Object proc
)
767 register Lisp_Object pair
;
769 pair
= Frassq (proc
, Vprocess_alist
);
770 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
772 deactivate_process (proc
);
776 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
777 doc
: /* Return t if OBJECT is a process. */)
780 return PROCESSP (object
) ? Qt
: Qnil
;
783 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
784 doc
: /* Return the process named NAME, or nil if there is none. */)
785 (register Lisp_Object name
)
790 return Fcdr (Fassoc (name
, Vprocess_alist
));
793 /* This is how commands for the user decode process arguments. It
794 accepts a process, a process name, a buffer, a buffer name, or nil.
795 Buffers denote the first process in the buffer, and nil denotes the
799 get_process (register Lisp_Object name
)
801 register Lisp_Object proc
, obj
;
804 obj
= Fget_process (name
);
806 obj
= Fget_buffer (name
);
808 error ("Process %s does not exist", SDATA (name
));
810 else if (NILP (name
))
811 obj
= Fcurrent_buffer ();
815 /* Now obj should be either a buffer object or a process object.
819 proc
= Fget_buffer_process (obj
);
821 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
832 /* Fdelete_process promises to immediately forget about the process, but in
833 reality, Emacs needs to remember those processes until they have been
834 treated by the SIGCHLD handler and waitpid has been invoked on them;
835 otherwise they might fill up the kernel's process table.
837 Some processes created by call-process are also put onto this list.
839 Members of this list are (process-ID . filename) pairs. The
840 process-ID is a number; the filename, if a string, is a file that
841 needs to be removed after the process exits. */
842 static Lisp_Object deleted_pid_list
;
845 record_deleted_pid (pid_t pid
, Lisp_Object filename
)
847 deleted_pid_list
= Fcons (Fcons (make_fixnum_or_float (pid
), filename
),
848 /* GC treated elements set to nil. */
849 Fdelq (Qnil
, deleted_pid_list
));
853 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
854 doc
: /* Delete PROCESS: kill it and forget about it immediately.
855 PROCESS may be a process, a buffer, the name of a process or buffer, or
856 nil, indicating the current buffer's process. */)
857 (register Lisp_Object process
)
859 register struct Lisp_Process
*p
;
861 process
= get_process (process
);
862 p
= XPROCESS (process
);
864 p
->raw_status_new
= 0;
865 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
867 pset_status (p
, list2 (Qexit
, make_number (0)));
868 p
->tick
= ++process_tick
;
870 redisplay_preserve_echo_area (13);
875 record_kill_process (p
, Qnil
);
879 /* Update P's status, since record_kill_process will make the
880 SIGCHLD handler update deleted_pid_list, not *P. */
882 if (p
->raw_status_new
)
884 symbol
= CONSP (p
->status
) ? XCAR (p
->status
) : p
->status
;
885 if (! (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)))
886 pset_status (p
, list2 (Qsignal
, make_number (SIGKILL
)));
888 p
->tick
= ++process_tick
;
890 redisplay_preserve_echo_area (13);
893 remove_process (process
);
897 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
898 doc
: /* Return the status of PROCESS.
899 The returned value is one of the following symbols:
900 run -- for a process that is running.
901 stop -- for a process stopped but continuable.
902 exit -- for a process that has exited.
903 signal -- for a process that has got a fatal signal.
904 open -- for a network stream connection that is open.
905 listen -- for a network stream server that is listening.
906 closed -- for a network stream connection that is closed.
907 connect -- when waiting for a non-blocking connection to complete.
908 failed -- when a non-blocking connection has failed.
909 nil -- if arg is a process name and no such process exists.
910 PROCESS may be a process, a buffer, the name of a process, or
911 nil, indicating the current buffer's process. */)
912 (register Lisp_Object process
)
914 register struct Lisp_Process
*p
;
915 register Lisp_Object status
;
917 if (STRINGP (process
))
918 process
= Fget_process (process
);
920 process
= get_process (process
);
925 p
= XPROCESS (process
);
926 if (p
->raw_status_new
)
930 status
= XCAR (status
);
931 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
933 if (EQ (status
, Qexit
))
935 else if (EQ (p
->command
, Qt
))
937 else if (EQ (status
, Qrun
))
943 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
945 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
946 If PROCESS has not yet exited or died, return 0. */)
947 (register Lisp_Object process
)
949 CHECK_PROCESS (process
);
950 if (XPROCESS (process
)->raw_status_new
)
951 update_status (XPROCESS (process
));
952 if (CONSP (XPROCESS (process
)->status
))
953 return XCAR (XCDR (XPROCESS (process
)->status
));
954 return make_number (0);
957 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
958 doc
: /* Return the process id of PROCESS.
959 This is the pid of the external process which PROCESS uses or talks to.
960 For a network connection, this value is nil. */)
961 (register Lisp_Object process
)
965 CHECK_PROCESS (process
);
966 pid
= XPROCESS (process
)->pid
;
967 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
970 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
971 doc
: /* Return the name of PROCESS, as a string.
972 This is the name of the program invoked in PROCESS,
973 possibly modified to make it unique among process names. */)
974 (register Lisp_Object process
)
976 CHECK_PROCESS (process
);
977 return XPROCESS (process
)->name
;
980 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
981 doc
: /* Return the command that was executed to start PROCESS.
982 This is a list of strings, the first string being the program executed
983 and the rest of the strings being the arguments given to it.
984 For a network or serial process, this is nil (process is running) or t
985 \(process is stopped). */)
986 (register Lisp_Object process
)
988 CHECK_PROCESS (process
);
989 return XPROCESS (process
)->command
;
992 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
993 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
994 This is the terminal that the process itself reads and writes on,
995 not the name of the pty that Emacs uses to talk with that terminal. */)
996 (register Lisp_Object process
)
998 CHECK_PROCESS (process
);
999 return XPROCESS (process
)->tty_name
;
1002 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
1004 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
1006 (register Lisp_Object process
, Lisp_Object buffer
)
1008 struct Lisp_Process
*p
;
1010 CHECK_PROCESS (process
);
1012 CHECK_BUFFER (buffer
);
1013 p
= XPROCESS (process
);
1014 pset_buffer (p
, buffer
);
1015 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1016 pset_childp (p
, Fplist_put (p
->childp
, QCbuffer
, buffer
));
1017 setup_process_coding_systems (process
);
1021 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
1023 doc
: /* Return the buffer PROCESS is associated with.
1024 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
1025 (register Lisp_Object process
)
1027 CHECK_PROCESS (process
);
1028 return XPROCESS (process
)->buffer
;
1031 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
1033 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1034 (register Lisp_Object process
)
1036 CHECK_PROCESS (process
);
1037 return XPROCESS (process
)->mark
;
1040 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1042 doc
: /* Give PROCESS the filter function FILTER; nil means default.
1043 A value of t means stop accepting output from the process.
1045 When a process has a non-default filter, its buffer is not used for output.
1046 Instead, each time it does output, the entire string of output is
1047 passed to the filter.
1049 The filter gets two arguments: the process and the string of output.
1050 The string argument is normally a multibyte string, except:
1051 - if the process' input coding system is no-conversion or raw-text,
1052 it is a unibyte string (the non-converted input), or else
1053 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1054 string (the result of converting the decoded input multibyte
1055 string to unibyte with `string-make-unibyte'). */)
1056 (register Lisp_Object process
, Lisp_Object filter
)
1058 struct Lisp_Process
*p
;
1060 CHECK_PROCESS (process
);
1061 p
= XPROCESS (process
);
1063 /* Don't signal an error if the process' input file descriptor
1064 is closed. This could make debugging Lisp more difficult,
1065 for example when doing something like
1067 (setq process (start-process ...))
1069 (set-process-filter process ...) */
1072 filter
= Qinternal_default_process_filter
;
1076 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1078 FD_CLR (p
->infd
, &input_wait_mask
);
1079 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1081 else if (EQ (p
->filter
, Qt
)
1082 /* Network or serial process not stopped: */
1083 && !EQ (p
->command
, Qt
))
1085 FD_SET (p
->infd
, &input_wait_mask
);
1086 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1090 pset_filter (p
, filter
);
1091 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1092 pset_childp (p
, Fplist_put (p
->childp
, QCfilter
, filter
));
1093 setup_process_coding_systems (process
);
1097 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1099 doc
: /* Return the filter function of PROCESS.
1100 See `set-process-filter' for more info on filter functions. */)
1101 (register Lisp_Object process
)
1103 CHECK_PROCESS (process
);
1104 return XPROCESS (process
)->filter
;
1107 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1109 doc
: /* Give PROCESS the sentinel SENTINEL; nil for default.
1110 The sentinel is called as a function when the process changes state.
1111 It gets two arguments: the process, and a string describing the change. */)
1112 (register Lisp_Object process
, Lisp_Object sentinel
)
1114 struct Lisp_Process
*p
;
1116 CHECK_PROCESS (process
);
1117 p
= XPROCESS (process
);
1119 if (NILP (sentinel
))
1120 sentinel
= Qinternal_default_process_sentinel
;
1122 pset_sentinel (p
, sentinel
);
1123 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1124 pset_childp (p
, Fplist_put (p
->childp
, QCsentinel
, sentinel
));
1128 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1130 doc
: /* Return the sentinel of PROCESS.
1131 See `set-process-sentinel' for more info on sentinels. */)
1132 (register Lisp_Object process
)
1134 CHECK_PROCESS (process
);
1135 return XPROCESS (process
)->sentinel
;
1138 DEFUN ("set-process-window-size", Fset_process_window_size
,
1139 Sset_process_window_size
, 3, 3, 0,
1140 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1141 (Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1143 CHECK_PROCESS (process
);
1145 /* All known platforms store window sizes as 'unsigned short'. */
1146 CHECK_RANGED_INTEGER (height
, 0, USHRT_MAX
);
1147 CHECK_RANGED_INTEGER (width
, 0, USHRT_MAX
);
1149 if (XPROCESS (process
)->infd
< 0
1150 || (set_window_size (XPROCESS (process
)->infd
,
1151 XINT (height
), XINT (width
))
1158 DEFUN ("set-process-inherit-coding-system-flag",
1159 Fset_process_inherit_coding_system_flag
,
1160 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1161 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1162 If the second argument FLAG is non-nil, then the variable
1163 `buffer-file-coding-system' of the buffer associated with PROCESS
1164 will be bound to the value of the coding system used to decode
1167 This is useful when the coding system specified for the process buffer
1168 leaves either the character code conversion or the end-of-line conversion
1169 unspecified, or if the coding system used to decode the process output
1170 is more appropriate for saving the process buffer.
1172 Binding the variable `inherit-process-coding-system' to non-nil before
1173 starting the process is an alternative way of setting the inherit flag
1174 for the process which will run.
1176 This function returns FLAG. */)
1177 (register Lisp_Object process
, Lisp_Object flag
)
1179 CHECK_PROCESS (process
);
1180 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1184 DEFUN ("set-process-query-on-exit-flag",
1185 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1187 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1188 If the second argument FLAG is non-nil, Emacs will query the user before
1189 exiting or killing a buffer if PROCESS is running. This function
1191 (register Lisp_Object process
, Lisp_Object flag
)
1193 CHECK_PROCESS (process
);
1194 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1198 DEFUN ("process-query-on-exit-flag",
1199 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1201 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1202 (register Lisp_Object process
)
1204 CHECK_PROCESS (process
);
1205 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1208 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1210 doc
: /* Return the contact info of PROCESS; t for a real child.
1211 For a network or serial connection, the value depends on the optional
1212 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1213 SERVICE) for a network connection or (PORT SPEED) for a serial
1214 connection. If KEY is t, the complete contact information for the
1215 connection is returned, else the specific value for the keyword KEY is
1216 returned. See `make-network-process' or `make-serial-process' for a
1217 list of keywords. */)
1218 (register Lisp_Object process
, Lisp_Object key
)
1220 Lisp_Object contact
;
1222 CHECK_PROCESS (process
);
1223 contact
= XPROCESS (process
)->childp
;
1225 #ifdef DATAGRAM_SOCKETS
1226 if (DATAGRAM_CONN_P (process
)
1227 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1228 contact
= Fplist_put (contact
, QCremote
,
1229 Fprocess_datagram_address (process
));
1232 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1234 if (NILP (key
) && NETCONN_P (process
))
1235 return list2 (Fplist_get (contact
, QChost
),
1236 Fplist_get (contact
, QCservice
));
1237 if (NILP (key
) && SERIALCONN_P (process
))
1238 return list2 (Fplist_get (contact
, QCport
),
1239 Fplist_get (contact
, QCspeed
));
1240 return Fplist_get (contact
, key
);
1243 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1245 doc
: /* Return the plist of PROCESS. */)
1246 (register Lisp_Object process
)
1248 CHECK_PROCESS (process
);
1249 return XPROCESS (process
)->plist
;
1252 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1254 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1255 (register Lisp_Object process
, Lisp_Object plist
)
1257 CHECK_PROCESS (process
);
1260 pset_plist (XPROCESS (process
), plist
);
1264 #if 0 /* Turned off because we don't currently record this info
1265 in the process. Perhaps add it. */
1266 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1267 doc
: /* Return the connection type of PROCESS.
1268 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1269 a socket connection. */)
1270 (Lisp_Object process
)
1272 return XPROCESS (process
)->type
;
1276 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1277 doc
: /* Return the connection type of PROCESS.
1278 The value is either the symbol `real', `network', or `serial'.
1279 PROCESS may be a process, a buffer, the name of a process or buffer, or
1280 nil, indicating the current buffer's process. */)
1281 (Lisp_Object process
)
1284 proc
= get_process (process
);
1285 return XPROCESS (proc
)->type
;
1288 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1290 doc
: /* Convert network ADDRESS from internal format to a string.
1291 A 4 or 5 element vector represents an IPv4 address (with port number).
1292 An 8 or 9 element vector represents an IPv6 address (with port number).
1293 If optional second argument OMIT-PORT is non-nil, don't include a port
1294 number in the string, even when present in ADDRESS.
1295 Returns nil if format of ADDRESS is invalid. */)
1296 (Lisp_Object address
, Lisp_Object omit_port
)
1301 if (STRINGP (address
)) /* AF_LOCAL */
1304 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1306 register struct Lisp_Vector
*p
= XVECTOR (address
);
1307 ptrdiff_t size
= p
->header
.size
;
1308 Lisp_Object args
[10];
1311 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1313 args
[0] = build_string ("%d.%d.%d.%d");
1318 args
[0] = build_string ("%d.%d.%d.%d:%d");
1321 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1323 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1328 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1334 for (i
= 0; i
< nargs
; i
++)
1336 if (! RANGED_INTEGERP (0, p
->u
.contents
[i
], 65535))
1339 if (nargs
<= 5 /* IPv4 */
1340 && i
< 4 /* host, not port */
1341 && XINT (p
->u
.contents
[i
]) > 255)
1344 args
[i
+1] = p
->u
.contents
[i
];
1347 return Fformat (nargs
+1, args
);
1350 if (CONSP (address
))
1352 Lisp_Object args
[2];
1353 args
[0] = build_string ("<Family %d>");
1354 args
[1] = Fcar (address
);
1355 return Fformat (2, args
);
1361 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1362 doc
: /* Return a list of all processes that are Emacs sub-processes. */)
1365 return Fmapcar (Qcdr
, Vprocess_alist
);
1368 /* Starting asynchronous inferior processes. */
1370 static void start_process_unwind (Lisp_Object proc
);
1372 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1373 doc
: /* Start a program in a subprocess. Return the process object for it.
1374 NAME is name for process. It is modified if necessary to make it unique.
1375 BUFFER is the buffer (or buffer name) to associate with the process.
1377 Process output (both standard output and standard error streams) goes
1378 at end of BUFFER, unless you specify an output stream or filter
1379 function to handle the output. BUFFER may also be nil, meaning that
1380 this process is not associated with any buffer.
1382 PROGRAM is the program file name. It is searched for in `exec-path'
1383 (which see). If nil, just associate a pty with the buffer. Remaining
1384 arguments are strings to give program as arguments.
1386 If you want to separate standard output from standard error, invoke
1387 the command through a shell and redirect one of them using the shell
1390 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1391 (ptrdiff_t nargs
, Lisp_Object
*args
)
1393 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1394 register unsigned char **new_argv
;
1396 ptrdiff_t count
= SPECPDL_INDEX ();
1400 buffer
= Fget_buffer_create (buffer
);
1402 /* Make sure that the child will be able to chdir to the current
1403 buffer's current directory, or its unhandled equivalent. We
1404 can't just have the child check for an error when it does the
1405 chdir, since it's in a vfork.
1407 We have to GCPRO around this because Fexpand_file_name and
1408 Funhandled_file_name_directory might call a file name handling
1409 function. The argument list is protected by the caller, so all
1410 we really have to worry about is buffer. */
1412 struct gcpro gcpro1
;
1414 current_dir
= encode_current_directory ();
1419 CHECK_STRING (name
);
1423 if (!NILP (program
))
1424 CHECK_STRING (program
);
1426 proc
= make_process (name
);
1427 /* If an error occurs and we can't start the process, we want to
1428 remove it from the process list. This means that each error
1429 check in create_process doesn't need to call remove_process
1430 itself; it's all taken care of here. */
1431 record_unwind_protect (start_process_unwind
, proc
);
1433 pset_childp (XPROCESS (proc
), Qt
);
1434 pset_plist (XPROCESS (proc
), Qnil
);
1435 pset_type (XPROCESS (proc
), Qreal
);
1436 pset_buffer (XPROCESS (proc
), buffer
);
1437 pset_sentinel (XPROCESS (proc
), Qinternal_default_process_sentinel
);
1438 pset_filter (XPROCESS (proc
), Qinternal_default_process_filter
);
1439 pset_command (XPROCESS (proc
), Flist (nargs
- 2, args
+ 2));
1442 /* AKA GNUTLS_INITSTAGE(proc). */
1443 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1444 pset_gnutls_cred_type (XPROCESS (proc
), Qnil
);
1447 #ifdef ADAPTIVE_READ_BUFFERING
1448 XPROCESS (proc
)->adaptive_read_buffering
1449 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1450 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1453 /* Make the process marker point into the process buffer (if any). */
1454 if (BUFFERP (buffer
))
1455 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1456 BUF_ZV (XBUFFER (buffer
)),
1457 BUF_ZV_BYTE (XBUFFER (buffer
)));
1460 /* Decide coding systems for communicating with the process. Here
1461 we don't setup the structure coding_system nor pay attention to
1462 unibyte mode. They are done in create_process. */
1464 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1465 Lisp_Object coding_systems
= Qt
;
1466 Lisp_Object val
, *args2
;
1467 struct gcpro gcpro1
, gcpro2
;
1469 val
= Vcoding_system_for_read
;
1472 args2
= alloca ((nargs
+ 1) * sizeof *args2
);
1473 args2
[0] = Qstart_process
;
1474 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1475 GCPRO2 (proc
, current_dir
);
1476 if (!NILP (program
))
1477 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1479 if (CONSP (coding_systems
))
1480 val
= XCAR (coding_systems
);
1481 else if (CONSP (Vdefault_process_coding_system
))
1482 val
= XCAR (Vdefault_process_coding_system
);
1484 pset_decode_coding_system (XPROCESS (proc
), val
);
1486 val
= Vcoding_system_for_write
;
1489 if (EQ (coding_systems
, Qt
))
1491 args2
= alloca ((nargs
+ 1) * sizeof *args2
);
1492 args2
[0] = Qstart_process
;
1493 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1494 GCPRO2 (proc
, current_dir
);
1495 if (!NILP (program
))
1496 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1499 if (CONSP (coding_systems
))
1500 val
= XCDR (coding_systems
);
1501 else if (CONSP (Vdefault_process_coding_system
))
1502 val
= XCDR (Vdefault_process_coding_system
);
1504 pset_encode_coding_system (XPROCESS (proc
), val
);
1505 /* Note: At this moment, the above coding system may leave
1506 text-conversion or eol-conversion unspecified. They will be
1507 decided after we read output from the process and decode it by
1508 some coding system, or just before we actually send a text to
1513 pset_decoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1514 XPROCESS (proc
)->decoding_carryover
= 0;
1515 pset_encoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1517 XPROCESS (proc
)->inherit_coding_system_flag
1518 = !(NILP (buffer
) || !inherit_process_coding_system
);
1520 if (!NILP (program
))
1522 /* If program file name is not absolute, search our path for it.
1523 Put the name we will really use in TEM. */
1524 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1525 && !(SCHARS (program
) > 1
1526 && IS_DEVICE_SEP (SREF (program
, 1))))
1528 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1531 GCPRO4 (name
, program
, buffer
, current_dir
);
1532 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1535 report_file_error ("Searching for program", program
);
1536 tem
= Fexpand_file_name (tem
, Qnil
);
1540 if (!NILP (Ffile_directory_p (program
)))
1541 error ("Specified program for new process is a directory");
1545 /* If program file name starts with /: for quoting a magic name,
1547 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1548 && SREF (tem
, 1) == ':')
1549 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1552 Lisp_Object arg_encoding
= Qnil
;
1553 struct gcpro gcpro1
;
1556 /* Encode the file name and put it in NEW_ARGV.
1557 That's where the child will use it to execute the program. */
1558 tem
= list1 (ENCODE_FILE (tem
));
1560 /* Here we encode arguments by the coding system used for sending
1561 data to the process. We don't support using different coding
1562 systems for encoding arguments and for encoding data sent to the
1565 for (i
= 3; i
< nargs
; i
++)
1567 tem
= Fcons (args
[i
], tem
);
1568 CHECK_STRING (XCAR (tem
));
1569 if (STRING_MULTIBYTE (XCAR (tem
)))
1571 if (NILP (arg_encoding
))
1572 arg_encoding
= (complement_process_encoding_system
1573 (XPROCESS (proc
)->encode_coding_system
));
1575 code_convert_string_norecord
1576 (XCAR (tem
), arg_encoding
, 1));
1583 /* Now that everything is encoded we can collect the strings into
1585 new_argv
= alloca ((nargs
- 1) * sizeof *new_argv
);
1586 new_argv
[nargs
- 2] = 0;
1588 for (i
= nargs
- 2; i
-- != 0; )
1590 new_argv
[i
] = SDATA (XCAR (tem
));
1594 create_process (proc
, (char **) new_argv
, current_dir
);
1599 return unbind_to (count
, proc
);
1602 /* This function is the unwind_protect form for Fstart_process. If
1603 PROC doesn't have its pid set, then we know someone has signaled
1604 an error and the process wasn't started successfully, so we should
1605 remove it from the process list. */
1607 start_process_unwind (Lisp_Object proc
)
1609 if (!PROCESSP (proc
))
1612 /* Was PROC started successfully?
1613 -2 is used for a pty with no process, eg for gdb. */
1614 if (XPROCESS (proc
)->pid
<= 0 && XPROCESS (proc
)->pid
!= -2)
1615 remove_process (proc
);
1618 /* If *FD_ADDR is nonnegative, close it, and mark it as closed. */
1621 close_process_fd (int *fd_addr
)
1631 /* Indexes of file descriptors in open_fds. */
1634 /* The pipe from Emacs to its subprocess. */
1636 WRITE_TO_SUBPROCESS
,
1638 /* The main pipe from the subprocess to Emacs. */
1639 READ_FROM_SUBPROCESS
,
1642 /* The pipe from the subprocess to Emacs that is closed when the
1643 subprocess execs. */
1644 READ_FROM_EXEC_MONITOR
,
1648 verify (PROCESS_OPEN_FDS
== EXEC_MONITOR_OUTPUT
+ 1);
1651 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1653 struct Lisp_Process
*p
= XPROCESS (process
);
1654 int inchannel
, outchannel
;
1657 int forkin
, forkout
;
1659 char pty_name
[PTY_NAME_SIZE
];
1660 Lisp_Object lisp_pty_name
= Qnil
;
1662 inchannel
= outchannel
= -1;
1664 if (!NILP (Vprocess_connection_type
))
1665 outchannel
= inchannel
= allocate_pty (pty_name
);
1669 p
->open_fd
[READ_FROM_SUBPROCESS
] = inchannel
;
1670 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1671 /* On most USG systems it does not work to open the pty's tty here,
1672 then close it and reopen it in the child. */
1673 /* Don't let this terminal become our controlling terminal
1674 (in case we don't have one). */
1675 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1677 report_file_error ("Opening pty", Qnil
);
1678 p
->open_fd
[SUBPROCESS_STDIN
] = forkin
;
1680 forkin
= forkout
= -1;
1681 #endif /* not USG, or USG_SUBTTY_WORKS */
1683 lisp_pty_name
= build_string (pty_name
);
1687 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
1688 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
1689 report_file_error ("Creating pipe", Qnil
);
1690 forkin
= p
->open_fd
[SUBPROCESS_STDIN
];
1691 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
1692 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
1693 forkout
= p
->open_fd
[SUBPROCESS_STDOUT
];
1697 if (emacs_pipe (p
->open_fd
+ READ_FROM_EXEC_MONITOR
) != 0)
1698 report_file_error ("Creating pipe", Qnil
);
1701 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1702 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1704 /* Record this as an active process, with its channels. */
1705 chan_process
[inchannel
] = process
;
1706 p
->infd
= inchannel
;
1707 p
->outfd
= outchannel
;
1709 /* Previously we recorded the tty descriptor used in the subprocess.
1710 It was only used for getting the foreground tty process, so now
1711 we just reopen the device (see emacs_get_tty_pgrp) as this is
1712 more portable (see USG_SUBTTY_WORKS above). */
1714 p
->pty_flag
= pty_flag
;
1715 pset_status (p
, Qrun
);
1717 FD_SET (inchannel
, &input_wait_mask
);
1718 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1719 if (inchannel
> max_process_desc
)
1720 max_process_desc
= inchannel
;
1722 /* This may signal an error. */
1723 setup_process_coding_systems (process
);
1726 block_child_signal ();
1729 /* vfork, and prevent local vars from being clobbered by the vfork. */
1731 Lisp_Object
volatile current_dir_volatile
= current_dir
;
1732 Lisp_Object
volatile lisp_pty_name_volatile
= lisp_pty_name
;
1733 char **volatile new_argv_volatile
= new_argv
;
1734 int volatile forkin_volatile
= forkin
;
1735 int volatile forkout_volatile
= forkout
;
1736 struct Lisp_Process
*p_volatile
= p
;
1740 current_dir
= current_dir_volatile
;
1741 lisp_pty_name
= lisp_pty_name_volatile
;
1742 new_argv
= new_argv_volatile
;
1743 forkin
= forkin_volatile
;
1744 forkout
= forkout_volatile
;
1747 pty_flag
= p
->pty_flag
;
1751 #endif /* not WINDOWSNT */
1753 int xforkin
= forkin
;
1754 int xforkout
= forkout
;
1756 /* Make the pty be the controlling terminal of the process. */
1758 /* First, disconnect its current controlling terminal. */
1759 /* We tried doing setsid only if pty_flag, but it caused
1760 process_set_signal to fail on SGI when using a pipe. */
1762 /* Make the pty's terminal the controlling terminal. */
1763 if (pty_flag
&& xforkin
>= 0)
1766 /* We ignore the return value
1767 because faith@cs.unc.edu says that is necessary on Linux. */
1768 ioctl (xforkin
, TIOCSCTTY
, 0);
1771 #if defined (LDISC1)
1772 if (pty_flag
&& xforkin
>= 0)
1775 tcgetattr (xforkin
, &t
);
1777 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1778 emacs_perror ("create_process/tcsetattr LDISC1");
1781 #if defined (NTTYDISC) && defined (TIOCSETD)
1782 if (pty_flag
&& xforkin
>= 0)
1784 /* Use new line discipline. */
1785 int ldisc
= NTTYDISC
;
1786 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1791 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1792 can do TIOCSPGRP only to the process's controlling tty. */
1795 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1796 I can't test it since I don't have 4.3. */
1797 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1800 ioctl (j
, TIOCNOTTY
, 0);
1804 #endif /* TIOCNOTTY */
1806 #if !defined (DONT_REOPEN_PTY)
1807 /*** There is a suggestion that this ought to be a
1808 conditional on TIOCSPGRP, or !defined TIOCSCTTY.
1809 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1810 that system does seem to need this code, even though
1811 both TIOCSCTTY is defined. */
1812 /* Now close the pty (if we had it open) and reopen it.
1813 This makes the pty the controlling terminal of the subprocess. */
1817 /* I wonder if emacs_close (emacs_open (SSDATA (lisp_pty_name), ...))
1820 emacs_close (xforkin
);
1821 xforkout
= xforkin
= emacs_open (SSDATA (lisp_pty_name
), O_RDWR
, 0);
1825 emacs_perror (SSDATA (lisp_pty_name
));
1826 _exit (EXIT_CANCELED
);
1830 #endif /* not DONT_REOPEN_PTY */
1832 #ifdef SETUP_SLAVE_PTY
1837 #endif /* SETUP_SLAVE_PTY */
1838 #endif /* HAVE_PTYS */
1840 signal (SIGINT
, SIG_DFL
);
1841 signal (SIGQUIT
, SIG_DFL
);
1843 /* Emacs ignores SIGPIPE, but the child should not. */
1844 signal (SIGPIPE
, SIG_DFL
);
1846 /* Stop blocking SIGCHLD in the child. */
1847 unblock_child_signal ();
1850 child_setup_tty (xforkout
);
1852 pid
= child_setup (xforkin
, xforkout
, xforkout
, new_argv
, 1, current_dir
);
1853 #else /* not WINDOWSNT */
1854 child_setup (xforkin
, xforkout
, xforkout
, new_argv
, 1, current_dir
);
1855 #endif /* not WINDOWSNT */
1858 /* Back in the parent process. */
1860 vfork_errno
= errno
;
1865 /* Stop blocking in the parent. */
1866 unblock_child_signal ();
1870 report_file_errno ("Doing vfork", Qnil
, vfork_errno
);
1873 /* vfork succeeded. */
1875 /* Close the pipe ends that the child uses, or the child's pty. */
1876 close_process_fd (&p
->open_fd
[SUBPROCESS_STDIN
]);
1877 close_process_fd (&p
->open_fd
[SUBPROCESS_STDOUT
]);
1880 register_child (pid
, inchannel
);
1881 #endif /* WINDOWSNT */
1883 pset_tty_name (p
, lisp_pty_name
);
1886 /* Wait for child_setup to complete in case that vfork is
1887 actually defined as fork. The descriptor
1888 XPROCESS (proc)->open_fd[EXEC_MONITOR_OUTPUT]
1889 of a pipe is closed at the child side either by close-on-exec
1890 on successful execve or the _exit call in child_setup. */
1894 close_process_fd (&p
->open_fd
[EXEC_MONITOR_OUTPUT
]);
1895 emacs_read (p
->open_fd
[READ_FROM_EXEC_MONITOR
], &dummy
, 1);
1896 close_process_fd (&p
->open_fd
[READ_FROM_EXEC_MONITOR
]);
1903 create_pty (Lisp_Object process
)
1905 struct Lisp_Process
*p
= XPROCESS (process
);
1906 char pty_name
[PTY_NAME_SIZE
];
1907 int pty_fd
= NILP (Vprocess_connection_type
) ? -1 : allocate_pty (pty_name
);
1911 p
->open_fd
[SUBPROCESS_STDIN
] = pty_fd
;
1912 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1913 /* On most USG systems it does not work to open the pty's tty here,
1914 then close it and reopen it in the child. */
1915 /* Don't let this terminal become our controlling terminal
1916 (in case we don't have one). */
1917 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1919 report_file_error ("Opening pty", Qnil
);
1920 p
->open_fd
[WRITE_TO_SUBPROCESS
] = forkout
;
1921 #if defined (DONT_REOPEN_PTY)
1922 /* In the case that vfork is defined as fork, the parent process
1923 (Emacs) may send some data before the child process completes
1924 tty options setup. So we setup tty before forking. */
1925 child_setup_tty (forkout
);
1926 #endif /* DONT_REOPEN_PTY */
1927 #endif /* not USG, or USG_SUBTTY_WORKS */
1929 fcntl (pty_fd
, F_SETFL
, O_NONBLOCK
);
1931 /* Record this as an active process, with its channels.
1932 As a result, child_setup will close Emacs's side of the pipes. */
1933 chan_process
[pty_fd
] = process
;
1937 /* Previously we recorded the tty descriptor used in the subprocess.
1938 It was only used for getting the foreground tty process, so now
1939 we just reopen the device (see emacs_get_tty_pgrp) as this is
1940 more portable (see USG_SUBTTY_WORKS above). */
1943 pset_status (p
, Qrun
);
1944 setup_process_coding_systems (process
);
1946 FD_SET (pty_fd
, &input_wait_mask
);
1947 FD_SET (pty_fd
, &non_keyboard_wait_mask
);
1948 if (pty_fd
> max_process_desc
)
1949 max_process_desc
= pty_fd
;
1951 pset_tty_name (p
, build_string (pty_name
));
1958 /* Convert an internal struct sockaddr to a lisp object (vector or string).
1959 The address family of sa is not included in the result. */
1962 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
1964 Lisp_Object address
;
1967 register struct Lisp_Vector
*p
;
1969 /* Workaround for a bug in getsockname on BSD: Names bound to
1970 sockets in the UNIX domain are inaccessible; getsockname returns
1971 a zero length name. */
1972 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
1973 return empty_unibyte_string
;
1975 switch (sa
->sa_family
)
1979 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
1980 len
= sizeof (sin
->sin_addr
) + 1;
1981 address
= Fmake_vector (make_number (len
), Qnil
);
1982 p
= XVECTOR (address
);
1983 p
->u
.contents
[--len
] = make_number (ntohs (sin
->sin_port
));
1984 cp
= (unsigned char *) &sin
->sin_addr
;
1990 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
1991 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
1992 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
1993 address
= Fmake_vector (make_number (len
), Qnil
);
1994 p
= XVECTOR (address
);
1995 p
->u
.contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
1996 for (i
= 0; i
< len
; i
++)
1997 p
->u
.contents
[i
] = make_number (ntohs (ip6
[i
]));
2001 #ifdef HAVE_LOCAL_SOCKETS
2004 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2005 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2006 if (sockun
->sun_path
[i
] == 0)
2008 return make_unibyte_string (sockun
->sun_path
, i
);
2012 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2013 address
= Fcons (make_number (sa
->sa_family
),
2014 Fmake_vector (make_number (len
), Qnil
));
2015 p
= XVECTOR (XCDR (address
));
2016 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2022 p
->u
.contents
[i
++] = make_number (*cp
++);
2028 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2031 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2033 register struct Lisp_Vector
*p
;
2035 if (VECTORP (address
))
2037 p
= XVECTOR (address
);
2038 if (p
->header
.size
== 5)
2041 return sizeof (struct sockaddr_in
);
2044 else if (p
->header
.size
== 9)
2046 *familyp
= AF_INET6
;
2047 return sizeof (struct sockaddr_in6
);
2051 #ifdef HAVE_LOCAL_SOCKETS
2052 else if (STRINGP (address
))
2054 *familyp
= AF_LOCAL
;
2055 return sizeof (struct sockaddr_un
);
2058 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2059 && VECTORP (XCDR (address
)))
2061 struct sockaddr
*sa
;
2062 *familyp
= XINT (XCAR (address
));
2063 p
= XVECTOR (XCDR (address
));
2064 return p
->header
.size
+ sizeof (sa
->sa_family
);
2069 /* Convert an address object (vector or string) to an internal sockaddr.
2071 The address format has been basically validated by
2072 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2073 it could have come from user data. So if FAMILY is not valid,
2074 we return after zeroing *SA. */
2077 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2079 register struct Lisp_Vector
*p
;
2080 register unsigned char *cp
= NULL
;
2084 memset (sa
, 0, len
);
2086 if (VECTORP (address
))
2088 p
= XVECTOR (address
);
2089 if (family
== AF_INET
)
2091 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2092 len
= sizeof (sin
->sin_addr
) + 1;
2093 hostport
= XINT (p
->u
.contents
[--len
]);
2094 sin
->sin_port
= htons (hostport
);
2095 cp
= (unsigned char *)&sin
->sin_addr
;
2096 sa
->sa_family
= family
;
2099 else if (family
== AF_INET6
)
2101 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2102 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2103 len
= sizeof (sin6
->sin6_addr
) + 1;
2104 hostport
= XINT (p
->u
.contents
[--len
]);
2105 sin6
->sin6_port
= htons (hostport
);
2106 for (i
= 0; i
< len
; i
++)
2107 if (INTEGERP (p
->u
.contents
[i
]))
2109 int j
= XFASTINT (p
->u
.contents
[i
]) & 0xffff;
2112 sa
->sa_family
= family
;
2119 else if (STRINGP (address
))
2121 #ifdef HAVE_LOCAL_SOCKETS
2122 if (family
== AF_LOCAL
)
2124 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2125 cp
= SDATA (address
);
2126 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2127 sockun
->sun_path
[i
] = *cp
++;
2128 sa
->sa_family
= family
;
2135 p
= XVECTOR (XCDR (address
));
2136 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2139 for (i
= 0; i
< len
; i
++)
2140 if (INTEGERP (p
->u
.contents
[i
]))
2141 *cp
++ = XFASTINT (p
->u
.contents
[i
]) & 0xff;
2144 #ifdef DATAGRAM_SOCKETS
2145 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2147 doc
: /* Get the current datagram address associated with PROCESS. */)
2148 (Lisp_Object process
)
2152 CHECK_PROCESS (process
);
2154 if (!DATAGRAM_CONN_P (process
))
2157 channel
= XPROCESS (process
)->infd
;
2158 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2159 datagram_address
[channel
].len
);
2162 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2164 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2165 Returns nil upon error setting address, ADDRESS otherwise. */)
2166 (Lisp_Object process
, Lisp_Object address
)
2171 CHECK_PROCESS (process
);
2173 if (!DATAGRAM_CONN_P (process
))
2176 channel
= XPROCESS (process
)->infd
;
2178 len
= get_lisp_to_sockaddr_size (address
, &family
);
2179 if (len
== 0 || datagram_address
[channel
].len
!= len
)
2181 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2187 static const struct socket_options
{
2188 /* The name of this option. Should be lowercase version of option
2189 name without SO_ prefix. */
2191 /* Option level SOL_... */
2193 /* Option number SO_... */
2195 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2196 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2197 } socket_options
[] =
2199 #ifdef SO_BINDTODEVICE
2200 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2203 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2206 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2209 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2212 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2215 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2218 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2221 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2223 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2226 /* Set option OPT to value VAL on socket S.
2228 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2229 Signals an error if setting a known option fails.
2233 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2236 const struct socket_options
*sopt
;
2241 name
= SSDATA (SYMBOL_NAME (opt
));
2242 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2243 if (strcmp (name
, sopt
->name
) == 0)
2246 switch (sopt
->opttype
)
2251 optval
= NILP (val
) ? 0 : 1;
2252 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2253 &optval
, sizeof (optval
));
2260 if (TYPE_RANGED_INTEGERP (int, val
))
2261 optval
= XINT (val
);
2263 error ("Bad option value for %s", name
);
2264 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2265 &optval
, sizeof (optval
));
2269 #ifdef SO_BINDTODEVICE
2272 char devname
[IFNAMSIZ
+1];
2274 /* This is broken, at least in the Linux 2.4 kernel.
2275 To unbind, the arg must be a zero integer, not the empty string.
2276 This should work on all systems. KFS. 2003-09-23. */
2277 memset (devname
, 0, sizeof devname
);
2280 char *arg
= SSDATA (val
);
2281 int len
= min (strlen (arg
), IFNAMSIZ
);
2282 memcpy (devname
, arg
, len
);
2284 else if (!NILP (val
))
2285 error ("Bad option value for %s", name
);
2286 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2295 struct linger linger
;
2298 linger
.l_linger
= 0;
2299 if (TYPE_RANGED_INTEGERP (int, val
))
2300 linger
.l_linger
= XINT (val
);
2302 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2303 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2304 &linger
, sizeof (linger
));
2315 int setsockopt_errno
= errno
;
2316 report_file_errno ("Cannot set network option", list2 (opt
, val
),
2320 return (1 << sopt
->optbit
);
2324 DEFUN ("set-network-process-option",
2325 Fset_network_process_option
, Sset_network_process_option
,
2327 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2328 See `make-network-process' for a list of options and values.
2329 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2330 OPTION is not a supported option, return nil instead; otherwise return t. */)
2331 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2334 struct Lisp_Process
*p
;
2336 CHECK_PROCESS (process
);
2337 p
= XPROCESS (process
);
2338 if (!NETCONN1_P (p
))
2339 error ("Process is not a network process");
2343 error ("Process is not running");
2345 if (set_socket_option (s
, option
, value
))
2347 pset_childp (p
, Fplist_put (p
->childp
, option
, value
));
2351 if (NILP (no_error
))
2352 error ("Unknown or unsupported option");
2358 DEFUN ("serial-process-configure",
2359 Fserial_process_configure
,
2360 Sserial_process_configure
,
2362 doc
: /* Configure speed, bytesize, etc. of a serial process.
2364 Arguments are specified as keyword/argument pairs. Attributes that
2365 are not given are re-initialized from the process's current
2366 configuration (available via the function `process-contact') or set to
2367 reasonable default values. The following arguments are defined:
2373 -- Any of these arguments can be given to identify the process that is
2374 to be configured. If none of these arguments is given, the current
2375 buffer's process is used.
2377 :speed SPEED -- SPEED is the speed of the serial port in bits per
2378 second, also called baud rate. Any value can be given for SPEED, but
2379 most serial ports work only at a few defined values between 1200 and
2380 115200, with 9600 being the most common value. If SPEED is nil, the
2381 serial port is not configured any further, i.e., all other arguments
2382 are ignored. This may be useful for special serial ports such as
2383 Bluetooth-to-serial converters which can only be configured through AT
2384 commands. A value of nil for SPEED can be used only when passed
2385 through `make-serial-process' or `serial-term'.
2387 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2388 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2390 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2391 `odd' (use odd parity), or the symbol `even' (use even parity). If
2392 PARITY is not given, no parity is used.
2394 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2395 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2396 is not given or nil, 1 stopbit is used.
2398 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2399 flowcontrol to be used, which is either nil (don't use flowcontrol),
2400 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2401 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2402 flowcontrol is used.
2404 `serial-process-configure' is called by `make-serial-process' for the
2405 initial configuration of the serial port.
2409 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2411 \(serial-process-configure
2412 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2414 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2416 usage: (serial-process-configure &rest ARGS) */)
2417 (ptrdiff_t nargs
, Lisp_Object
*args
)
2419 struct Lisp_Process
*p
;
2420 Lisp_Object contact
= Qnil
;
2421 Lisp_Object proc
= Qnil
;
2422 struct gcpro gcpro1
;
2424 contact
= Flist (nargs
, args
);
2427 proc
= Fplist_get (contact
, QCprocess
);
2429 proc
= Fplist_get (contact
, QCname
);
2431 proc
= Fplist_get (contact
, QCbuffer
);
2433 proc
= Fplist_get (contact
, QCport
);
2434 proc
= get_process (proc
);
2435 p
= XPROCESS (proc
);
2436 if (!EQ (p
->type
, Qserial
))
2437 error ("Not a serial process");
2439 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2445 serial_configure (p
, contact
);
2451 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2453 doc
: /* Create and return a serial port process.
2455 In Emacs, serial port connections are represented by process objects,
2456 so input and output work as for subprocesses, and `delete-process'
2457 closes a serial port connection. However, a serial process has no
2458 process id, it cannot be signaled, and the status codes are different
2459 from normal processes.
2461 `make-serial-process' creates a process and a buffer, on which you
2462 probably want to use `process-send-string'. Try \\[serial-term] for
2463 an interactive terminal. See below for examples.
2465 Arguments are specified as keyword/argument pairs. The following
2466 arguments are defined:
2468 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2469 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2470 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2471 the backslashes in strings).
2473 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2474 which this function calls.
2476 :name NAME -- NAME is the name of the process. If NAME is not given,
2477 the value of PORT is used.
2479 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2480 with the process. Process output goes at the end of that buffer,
2481 unless you specify an output stream or filter function to handle the
2482 output. If BUFFER is not given, the value of NAME is used.
2484 :coding CODING -- If CODING is a symbol, it specifies the coding
2485 system used for both reading and writing for this process. If CODING
2486 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2487 ENCODING is used for writing.
2489 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2490 the process is running. If BOOL is not given, query before exiting.
2492 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2493 In the stopped state, a serial process does not accept incoming data,
2494 but you can send outgoing data. The stopped state is cleared by
2495 `continue-process' and set by `stop-process'.
2497 :filter FILTER -- Install FILTER as the process filter.
2499 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2501 :plist PLIST -- Install PLIST as the initial plist of the process.
2507 -- This function calls `serial-process-configure' to handle these
2510 The original argument list, possibly modified by later configuration,
2511 is available via the function `process-contact'.
2515 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2517 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2519 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2521 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2523 usage: (make-serial-process &rest ARGS) */)
2524 (ptrdiff_t nargs
, Lisp_Object
*args
)
2527 Lisp_Object proc
, contact
, port
;
2528 struct Lisp_Process
*p
;
2529 struct gcpro gcpro1
;
2530 Lisp_Object name
, buffer
;
2531 Lisp_Object tem
, val
;
2532 ptrdiff_t specpdl_count
;
2537 contact
= Flist (nargs
, args
);
2540 port
= Fplist_get (contact
, QCport
);
2542 error ("No port specified");
2543 CHECK_STRING (port
);
2545 if (NILP (Fplist_member (contact
, QCspeed
)))
2546 error (":speed not specified");
2547 if (!NILP (Fplist_get (contact
, QCspeed
)))
2548 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2550 name
= Fplist_get (contact
, QCname
);
2553 CHECK_STRING (name
);
2554 proc
= make_process (name
);
2555 specpdl_count
= SPECPDL_INDEX ();
2556 record_unwind_protect (remove_process
, proc
);
2557 p
= XPROCESS (proc
);
2559 fd
= serial_open (port
);
2560 p
->open_fd
[SUBPROCESS_STDIN
] = fd
;
2563 if (fd
> max_process_desc
)
2564 max_process_desc
= fd
;
2565 chan_process
[fd
] = proc
;
2567 buffer
= Fplist_get (contact
, QCbuffer
);
2570 buffer
= Fget_buffer_create (buffer
);
2571 pset_buffer (p
, buffer
);
2573 pset_childp (p
, contact
);
2574 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2575 pset_type (p
, Qserial
);
2576 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2577 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2579 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2580 p
->kill_without_query
= 1;
2581 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2582 pset_command (p
, Qt
);
2583 eassert (! p
->pty_flag
);
2585 if (!EQ (p
->command
, Qt
))
2587 FD_SET (fd
, &input_wait_mask
);
2588 FD_SET (fd
, &non_keyboard_wait_mask
);
2591 if (BUFFERP (buffer
))
2593 set_marker_both (p
->mark
, buffer
,
2594 BUF_ZV (XBUFFER (buffer
)),
2595 BUF_ZV_BYTE (XBUFFER (buffer
)));
2598 tem
= Fplist_member (contact
, QCcoding
);
2599 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2605 val
= XCAR (XCDR (tem
));
2609 else if (!NILP (Vcoding_system_for_read
))
2610 val
= Vcoding_system_for_read
;
2611 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2612 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2614 pset_decode_coding_system (p
, val
);
2619 val
= XCAR (XCDR (tem
));
2623 else if (!NILP (Vcoding_system_for_write
))
2624 val
= Vcoding_system_for_write
;
2625 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2626 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2628 pset_encode_coding_system (p
, val
);
2630 setup_process_coding_systems (proc
);
2631 pset_decoding_buf (p
, empty_unibyte_string
);
2632 p
->decoding_carryover
= 0;
2633 pset_encoding_buf (p
, empty_unibyte_string
);
2634 p
->inherit_coding_system_flag
2635 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2637 Fserial_process_configure (nargs
, args
);
2639 specpdl_ptr
= specpdl
+ specpdl_count
;
2645 /* Create a network stream/datagram client/server process. Treated
2646 exactly like a normal process when reading and writing. Primary
2647 differences are in status display and process deletion. A network
2648 connection has no PID; you cannot signal it. All you can do is
2649 stop/continue it and deactivate/close it via delete-process */
2651 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2653 doc
: /* Create and return a network server or client process.
2655 In Emacs, network connections are represented by process objects, so
2656 input and output work as for subprocesses and `delete-process' closes
2657 a network connection. However, a network process has no process id,
2658 it cannot be signaled, and the status codes are different from normal
2661 Arguments are specified as keyword/argument pairs. The following
2662 arguments are defined:
2664 :name NAME -- NAME is name for process. It is modified if necessary
2667 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2668 with the process. Process output goes at end of that buffer, unless
2669 you specify an output stream or filter function to handle the output.
2670 BUFFER may be also nil, meaning that this process is not associated
2673 :host HOST -- HOST is name of the host to connect to, or its IP
2674 address. The symbol `local' specifies the local host. If specified
2675 for a server process, it must be a valid name or address for the local
2676 host, and only clients connecting to that address will be accepted.
2678 :service SERVICE -- SERVICE is name of the service desired, or an
2679 integer specifying a port number to connect to. If SERVICE is t,
2680 a random port number is selected for the server. (If Emacs was
2681 compiled with getaddrinfo, a port number can also be specified as a
2682 string, e.g. "80", as well as an integer. This is not portable.)
2684 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2685 stream type connection, `datagram' creates a datagram type connection,
2686 `seqpacket' creates a reliable datagram connection.
2688 :family FAMILY -- FAMILY is the address (and protocol) family for the
2689 service specified by HOST and SERVICE. The default (nil) is to use
2690 whatever address family (IPv4 or IPv6) that is defined for the host
2691 and port number specified by HOST and SERVICE. Other address families
2693 local -- for a local (i.e. UNIX) address specified by SERVICE.
2694 ipv4 -- use IPv4 address family only.
2695 ipv6 -- use IPv6 address family only.
2697 :local ADDRESS -- ADDRESS is the local address used for the connection.
2698 This parameter is ignored when opening a client process. When specified
2699 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2701 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2702 connection. This parameter is ignored when opening a stream server
2703 process. For a datagram server process, it specifies the initial
2704 setting of the remote datagram address. When specified for a client
2705 process, the FAMILY, HOST, and SERVICE args are ignored.
2707 The format of ADDRESS depends on the address family:
2708 - An IPv4 address is represented as an vector of integers [A B C D P]
2709 corresponding to numeric IP address A.B.C.D and port number P.
2710 - A local address is represented as a string with the address in the
2711 local address space.
2712 - An "unsupported family" address is represented by a cons (F . AV)
2713 where F is the family number and AV is a vector containing the socket
2714 address data with one element per address data byte. Do not rely on
2715 this format in portable code, as it may depend on implementation
2716 defined constants, data sizes, and data structure alignment.
2718 :coding CODING -- If CODING is a symbol, it specifies the coding
2719 system used for both reading and writing for this process. If CODING
2720 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2721 ENCODING is used for writing.
2723 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2724 return without waiting for the connection to complete; instead, the
2725 sentinel function will be called with second arg matching "open" (if
2726 successful) or "failed" when the connect completes. Default is to use
2727 a blocking connect (i.e. wait) for stream type connections.
2729 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2730 running when Emacs is exited.
2732 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2733 In the stopped state, a server process does not accept new
2734 connections, and a client process does not handle incoming traffic.
2735 The stopped state is cleared by `continue-process' and set by
2738 :filter FILTER -- Install FILTER as the process filter.
2740 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2741 process filter are multibyte, otherwise they are unibyte.
2742 If this keyword is not specified, the strings are multibyte if
2743 the default value of `enable-multibyte-characters' is non-nil.
2745 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2747 :log LOG -- Install LOG as the server process log function. This
2748 function is called when the server accepts a network connection from a
2749 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2750 is the server process, CLIENT is the new process for the connection,
2751 and MESSAGE is a string.
2753 :plist PLIST -- Install PLIST as the new process' initial plist.
2755 :server QLEN -- if QLEN is non-nil, create a server process for the
2756 specified FAMILY, SERVICE, and connection type (stream or datagram).
2757 If QLEN is an integer, it is used as the max. length of the server's
2758 pending connection queue (also known as the backlog); the default
2759 queue length is 5. Default is to create a client process.
2761 The following network options can be specified for this connection:
2763 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2764 :dontroute BOOL -- Only send to directly connected hosts.
2765 :keepalive BOOL -- Send keep-alive messages on network stream.
2766 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2767 :oobinline BOOL -- Place out-of-band data in receive data stream.
2768 :priority INT -- Set protocol defined priority for sent packets.
2769 :reuseaddr BOOL -- Allow reusing a recently used local address
2770 (this is allowed by default for a server process).
2771 :bindtodevice NAME -- bind to interface NAME. Using this may require
2772 special privileges on some systems.
2774 Consult the relevant system programmer's manual pages for more
2775 information on using these options.
2778 A server process will listen for and accept connections from clients.
2779 When a client connection is accepted, a new network process is created
2780 for the connection with the following parameters:
2782 - The client's process name is constructed by concatenating the server
2783 process' NAME and a client identification string.
2784 - If the FILTER argument is non-nil, the client process will not get a
2785 separate process buffer; otherwise, the client's process buffer is a newly
2786 created buffer named after the server process' BUFFER name or process
2787 NAME concatenated with the client identification string.
2788 - The connection type and the process filter and sentinel parameters are
2789 inherited from the server process' TYPE, FILTER and SENTINEL.
2790 - The client process' contact info is set according to the client's
2791 addressing information (typically an IP address and a port number).
2792 - The client process' plist is initialized from the server's plist.
2794 Notice that the FILTER and SENTINEL args are never used directly by
2795 the server process. Also, the BUFFER argument is not used directly by
2796 the server process, but via the optional :log function, accepted (and
2797 failed) connections may be logged in the server process' buffer.
2799 The original argument list, modified with the actual connection
2800 information, is available via the `process-contact' function.
2802 usage: (make-network-process &rest ARGS) */)
2803 (ptrdiff_t nargs
, Lisp_Object
*args
)
2806 Lisp_Object contact
;
2807 struct Lisp_Process
*p
;
2808 #ifdef HAVE_GETADDRINFO
2809 struct addrinfo ai
, *res
, *lres
;
2810 struct addrinfo hints
;
2811 const char *portstring
;
2813 #else /* HAVE_GETADDRINFO */
2814 struct _emacs_addrinfo
2820 struct sockaddr
*ai_addr
;
2821 struct _emacs_addrinfo
*ai_next
;
2823 #endif /* HAVE_GETADDRINFO */
2824 struct sockaddr_in address_in
;
2825 #ifdef HAVE_LOCAL_SOCKETS
2826 struct sockaddr_un address_un
;
2831 int s
= -1, outch
, inch
;
2832 struct gcpro gcpro1
;
2833 ptrdiff_t count
= SPECPDL_INDEX ();
2835 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2837 Lisp_Object name
, buffer
, host
, service
, address
;
2838 Lisp_Object filter
, sentinel
;
2839 bool is_non_blocking_client
= 0;
2848 /* Save arguments for process-contact and clone-process. */
2849 contact
= Flist (nargs
, args
);
2853 /* Ensure socket support is loaded if available. */
2854 init_winsock (TRUE
);
2857 /* :type TYPE (nil: stream, datagram */
2858 tem
= Fplist_get (contact
, QCtype
);
2860 socktype
= SOCK_STREAM
;
2861 #ifdef DATAGRAM_SOCKETS
2862 else if (EQ (tem
, Qdatagram
))
2863 socktype
= SOCK_DGRAM
;
2865 #ifdef HAVE_SEQPACKET
2866 else if (EQ (tem
, Qseqpacket
))
2867 socktype
= SOCK_SEQPACKET
;
2870 error ("Unsupported connection type");
2873 tem
= Fplist_get (contact
, QCserver
);
2876 /* Don't support network sockets when non-blocking mode is
2877 not available, since a blocked Emacs is not useful. */
2879 if (TYPE_RANGED_INTEGERP (int, tem
))
2880 backlog
= XINT (tem
);
2883 /* Make QCaddress an alias for :local (server) or :remote (client). */
2884 QCaddress
= is_server
? QClocal
: QCremote
;
2887 if (!is_server
&& socktype
!= SOCK_DGRAM
2888 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2890 #ifndef NON_BLOCKING_CONNECT
2891 error ("Non-blocking connect not supported");
2893 is_non_blocking_client
= 1;
2897 name
= Fplist_get (contact
, QCname
);
2898 buffer
= Fplist_get (contact
, QCbuffer
);
2899 filter
= Fplist_get (contact
, QCfilter
);
2900 sentinel
= Fplist_get (contact
, QCsentinel
);
2902 CHECK_STRING (name
);
2904 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2905 ai
.ai_socktype
= socktype
;
2910 /* :local ADDRESS or :remote ADDRESS */
2911 address
= Fplist_get (contact
, QCaddress
);
2912 if (!NILP (address
))
2914 host
= service
= Qnil
;
2916 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2917 error ("Malformed :address");
2918 ai
.ai_family
= family
;
2919 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2920 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2924 /* :family FAMILY -- nil (for Inet), local, or integer. */
2925 tem
= Fplist_get (contact
, QCfamily
);
2928 #if defined (HAVE_GETADDRINFO) && defined (AF_INET6)
2934 #ifdef HAVE_LOCAL_SOCKETS
2935 else if (EQ (tem
, Qlocal
))
2939 else if (EQ (tem
, Qipv6
))
2942 else if (EQ (tem
, Qipv4
))
2944 else if (TYPE_RANGED_INTEGERP (int, tem
))
2945 family
= XINT (tem
);
2947 error ("Unknown address family");
2949 ai
.ai_family
= family
;
2951 /* :service SERVICE -- string, integer (port number), or t (random port). */
2952 service
= Fplist_get (contact
, QCservice
);
2954 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2955 host
= Fplist_get (contact
, QChost
);
2958 if (EQ (host
, Qlocal
))
2959 /* Depending on setup, "localhost" may map to different IPv4 and/or
2960 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
2961 host
= build_string ("127.0.0.1");
2962 CHECK_STRING (host
);
2965 #ifdef HAVE_LOCAL_SOCKETS
2966 if (family
== AF_LOCAL
)
2970 message (":family local ignores the :host \"%s\" property",
2972 contact
= Fplist_put (contact
, QChost
, Qnil
);
2975 CHECK_STRING (service
);
2976 memset (&address_un
, 0, sizeof address_un
);
2977 address_un
.sun_family
= AF_LOCAL
;
2978 if (sizeof address_un
.sun_path
<= SBYTES (service
))
2979 error ("Service name too long");
2980 strcpy (address_un
.sun_path
, SSDATA (service
));
2981 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
2982 ai
.ai_addrlen
= sizeof address_un
;
2987 /* Slow down polling to every ten seconds.
2988 Some kernels have a bug which causes retrying connect to fail
2989 after a connect. Polling can interfere with gethostbyname too. */
2990 #ifdef POLL_FOR_INPUT
2991 if (socktype
!= SOCK_DGRAM
)
2993 record_unwind_protect_void (run_all_atimers
);
2994 bind_polling_period (10);
2998 #ifdef HAVE_GETADDRINFO
2999 /* If we have a host, use getaddrinfo to resolve both host and service.
3000 Otherwise, use getservbyname to lookup the service. */
3004 /* SERVICE can either be a string or int.
3005 Convert to a C string for later use by getaddrinfo. */
3006 if (EQ (service
, Qt
))
3008 else if (INTEGERP (service
))
3010 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3011 portstring
= portbuf
;
3015 CHECK_STRING (service
);
3016 portstring
= SSDATA (service
);
3021 memset (&hints
, 0, sizeof (hints
));
3023 hints
.ai_family
= family
;
3024 hints
.ai_socktype
= socktype
;
3025 hints
.ai_protocol
= 0;
3027 #ifdef HAVE_RES_INIT
3031 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3033 #ifdef HAVE_GAI_STRERROR
3034 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3036 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3042 #endif /* HAVE_GETADDRINFO */
3044 /* We end up here if getaddrinfo is not defined, or in case no hostname
3045 has been specified (e.g. for a local server process). */
3047 if (EQ (service
, Qt
))
3049 else if (INTEGERP (service
))
3050 port
= htons ((unsigned short) XINT (service
));
3053 struct servent
*svc_info
;
3054 CHECK_STRING (service
);
3055 svc_info
= getservbyname (SSDATA (service
),
3056 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3058 error ("Unknown service: %s", SDATA (service
));
3059 port
= svc_info
->s_port
;
3062 memset (&address_in
, 0, sizeof address_in
);
3063 address_in
.sin_family
= family
;
3064 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3065 address_in
.sin_port
= port
;
3067 #ifndef HAVE_GETADDRINFO
3070 struct hostent
*host_info_ptr
;
3072 /* gethostbyname may fail with TRY_AGAIN, but we don't honor that,
3073 as it may `hang' Emacs for a very long time. */
3077 #ifdef HAVE_RES_INIT
3081 host_info_ptr
= gethostbyname (SDATA (host
));
3086 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3087 host_info_ptr
->h_length
);
3088 family
= host_info_ptr
->h_addrtype
;
3089 address_in
.sin_family
= family
;
3092 /* Attempt to interpret host as numeric inet address */
3094 unsigned long numeric_addr
;
3095 numeric_addr
= inet_addr (SSDATA (host
));
3096 if (numeric_addr
== -1)
3097 error ("Unknown host \"%s\"", SDATA (host
));
3099 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3100 sizeof (address_in
.sin_addr
));
3104 #endif /* not HAVE_GETADDRINFO */
3106 ai
.ai_family
= family
;
3107 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3108 ai
.ai_addrlen
= sizeof address_in
;
3112 /* Do this in case we never enter the for-loop below. */
3113 count1
= SPECPDL_INDEX ();
3116 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3125 s
= socket (lres
->ai_family
, lres
->ai_socktype
| SOCK_CLOEXEC
,
3133 #ifdef DATAGRAM_SOCKETS
3134 if (!is_server
&& socktype
== SOCK_DGRAM
)
3136 #endif /* DATAGRAM_SOCKETS */
3138 #ifdef NON_BLOCKING_CONNECT
3139 if (is_non_blocking_client
)
3141 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3152 /* Make us close S if quit. */
3153 record_unwind_protect_int (close_file_unwind
, s
);
3155 /* Parse network options in the arg list.
3156 We simply ignore anything which isn't a known option (including other keywords).
3157 An error is signaled if setting a known option fails. */
3158 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3159 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3163 /* Configure as a server socket. */
3165 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3166 explicit :reuseaddr key to override this. */
3167 #ifdef HAVE_LOCAL_SOCKETS
3168 if (family
!= AF_LOCAL
)
3170 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3173 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3174 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3177 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3178 report_file_error ("Cannot bind server socket", Qnil
);
3180 #ifdef HAVE_GETSOCKNAME
3181 if (EQ (service
, Qt
))
3183 struct sockaddr_in sa1
;
3184 socklen_t len1
= sizeof (sa1
);
3185 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3187 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3188 service
= make_number (ntohs (sa1
.sin_port
));
3189 contact
= Fplist_put (contact
, QCservice
, service
);
3194 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3195 report_file_error ("Cannot listen on server socket", Qnil
);
3203 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3206 if (ret
== 0 || xerrno
== EISCONN
)
3208 /* The unwind-protect will be discarded afterwards.
3209 Likewise for immediate_quit. */
3213 #ifdef NON_BLOCKING_CONNECT
3215 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3219 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3226 if (xerrno
== EINTR
)
3228 /* Unlike most other syscalls connect() cannot be called
3229 again. (That would return EALREADY.) The proper way to
3230 wait for completion is pselect(). */
3238 sc
= pselect (s
+ 1, NULL
, &fdset
, NULL
, NULL
, NULL
);
3244 report_file_error ("Failed select", Qnil
);
3248 len
= sizeof xerrno
;
3249 eassert (FD_ISSET (s
, &fdset
));
3250 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) < 0)
3251 report_file_error ("Failed getsockopt", Qnil
);
3253 report_file_errno ("Failed connect", Qnil
, xerrno
);
3256 #endif /* !WINDOWSNT */
3260 /* Discard the unwind protect closing S. */
3261 specpdl_ptr
= specpdl
+ count1
;
3266 if (xerrno
== EINTR
)
3273 #ifdef DATAGRAM_SOCKETS
3274 if (socktype
== SOCK_DGRAM
)
3276 if (datagram_address
[s
].sa
)
3278 datagram_address
[s
].sa
= xmalloc (lres
->ai_addrlen
);
3279 datagram_address
[s
].len
= lres
->ai_addrlen
;
3283 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3284 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3287 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3288 if (rlen
!= 0 && rfamily
== lres
->ai_family
3289 && rlen
== lres
->ai_addrlen
)
3290 conv_lisp_to_sockaddr (rfamily
, remote
,
3291 datagram_address
[s
].sa
, rlen
);
3295 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3298 contact
= Fplist_put (contact
, QCaddress
,
3299 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3300 #ifdef HAVE_GETSOCKNAME
3303 struct sockaddr_in sa1
;
3304 socklen_t len1
= sizeof (sa1
);
3305 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3306 contact
= Fplist_put (contact
, QClocal
,
3307 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3314 #ifdef HAVE_GETADDRINFO
3325 /* If non-blocking got this far - and failed - assume non-blocking is
3326 not supported after all. This is probably a wrong assumption, but
3327 the normal blocking calls to open-network-stream handles this error
3329 if (is_non_blocking_client
)
3332 report_file_errno ((is_server
3333 ? "make server process failed"
3334 : "make client process failed"),
3342 buffer
= Fget_buffer_create (buffer
);
3343 proc
= make_process (name
);
3345 chan_process
[inch
] = proc
;
3347 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3349 p
= XPROCESS (proc
);
3351 pset_childp (p
, contact
);
3352 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
3353 pset_type (p
, Qnetwork
);
3355 pset_buffer (p
, buffer
);
3356 pset_sentinel (p
, sentinel
);
3357 pset_filter (p
, filter
);
3358 pset_log (p
, Fplist_get (contact
, QClog
));
3359 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3360 p
->kill_without_query
= 1;
3361 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3362 pset_command (p
, Qt
);
3365 p
->open_fd
[SUBPROCESS_STDIN
] = inch
;
3369 /* Discard the unwind protect for closing S, if any. */
3370 specpdl_ptr
= specpdl
+ count1
;
3372 /* Unwind bind_polling_period and request_sigio. */
3373 unbind_to (count
, Qnil
);
3375 if (is_server
&& socktype
!= SOCK_DGRAM
)
3376 pset_status (p
, Qlisten
);
3378 /* Make the process marker point into the process buffer (if any). */
3379 if (BUFFERP (buffer
))
3380 set_marker_both (p
->mark
, buffer
,
3381 BUF_ZV (XBUFFER (buffer
)),
3382 BUF_ZV_BYTE (XBUFFER (buffer
)));
3384 #ifdef NON_BLOCKING_CONNECT
3385 if (is_non_blocking_client
)
3387 /* We may get here if connect did succeed immediately. However,
3388 in that case, we still need to signal this like a non-blocking
3390 pset_status (p
, Qconnect
);
3391 if (!FD_ISSET (inch
, &connect_wait_mask
))
3393 FD_SET (inch
, &connect_wait_mask
);
3394 FD_SET (inch
, &write_mask
);
3395 num_pending_connects
++;
3400 /* A server may have a client filter setting of Qt, but it must
3401 still listen for incoming connects unless it is stopped. */
3402 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3403 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3405 FD_SET (inch
, &input_wait_mask
);
3406 FD_SET (inch
, &non_keyboard_wait_mask
);
3409 if (inch
> max_process_desc
)
3410 max_process_desc
= inch
;
3412 tem
= Fplist_member (contact
, QCcoding
);
3413 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3414 tem
= Qnil
; /* No error message (too late!). */
3417 /* Setup coding systems for communicating with the network stream. */
3418 struct gcpro gcpro1
;
3419 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3420 Lisp_Object coding_systems
= Qt
;
3421 Lisp_Object fargs
[5], val
;
3425 val
= XCAR (XCDR (tem
));
3429 else if (!NILP (Vcoding_system_for_read
))
3430 val
= Vcoding_system_for_read
;
3431 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3432 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3433 /* We dare not decode end-of-line format by setting VAL to
3434 Qraw_text, because the existing Emacs Lisp libraries
3435 assume that they receive bare code including a sequence of
3440 if (NILP (host
) || NILP (service
))
3441 coding_systems
= Qnil
;
3444 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3445 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3447 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3450 if (CONSP (coding_systems
))
3451 val
= XCAR (coding_systems
);
3452 else if (CONSP (Vdefault_process_coding_system
))
3453 val
= XCAR (Vdefault_process_coding_system
);
3457 pset_decode_coding_system (p
, val
);
3461 val
= XCAR (XCDR (tem
));
3465 else if (!NILP (Vcoding_system_for_write
))
3466 val
= Vcoding_system_for_write
;
3467 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3471 if (EQ (coding_systems
, Qt
))
3473 if (NILP (host
) || NILP (service
))
3474 coding_systems
= Qnil
;
3477 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3478 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3480 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3484 if (CONSP (coding_systems
))
3485 val
= XCDR (coding_systems
);
3486 else if (CONSP (Vdefault_process_coding_system
))
3487 val
= XCDR (Vdefault_process_coding_system
);
3491 pset_encode_coding_system (p
, val
);
3493 setup_process_coding_systems (proc
);
3495 pset_decoding_buf (p
, empty_unibyte_string
);
3496 p
->decoding_carryover
= 0;
3497 pset_encoding_buf (p
, empty_unibyte_string
);
3499 p
->inherit_coding_system_flag
3500 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3507 #if defined (HAVE_NET_IF_H)
3510 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3511 doc
: /* Return an alist of all network interfaces and their network address.
3512 Each element is a cons, the car of which is a string containing the
3513 interface name, and the cdr is the network address in internal
3514 format; see the description of ADDRESS in `make-network-process'. */)
3517 struct ifconf ifconf
;
3518 struct ifreq
*ifreq
;
3520 ptrdiff_t buf_size
= 512;
3525 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3528 count
= SPECPDL_INDEX ();
3529 record_unwind_protect_int (close_file_unwind
, s
);
3533 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
3534 ifconf
.ifc_buf
= buf
;
3535 ifconf
.ifc_len
= buf_size
;
3536 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3543 while (ifconf
.ifc_len
== buf_size
);
3545 res
= unbind_to (count
, Qnil
);
3546 ifreq
= ifconf
.ifc_req
;
3547 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
3549 struct ifreq
*ifq
= ifreq
;
3550 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3551 #define SIZEOF_IFREQ(sif) \
3552 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
3553 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
3555 int len
= SIZEOF_IFREQ (ifq
);
3557 int len
= sizeof (*ifreq
);
3559 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3560 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
3562 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3565 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3566 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3567 res
= Fcons (Fcons (build_string (namebuf
),
3568 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3569 sizeof (struct sockaddr
))),
3576 #endif /* SIOCGIFCONF */
3578 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
3582 const char *flag_sym
;
3585 static const struct ifflag_def ifflag_table
[] = {
3589 #ifdef IFF_BROADCAST
3590 { IFF_BROADCAST
, "broadcast" },
3593 { IFF_DEBUG
, "debug" },
3596 { IFF_LOOPBACK
, "loopback" },
3598 #ifdef IFF_POINTOPOINT
3599 { IFF_POINTOPOINT
, "pointopoint" },
3602 { IFF_RUNNING
, "running" },
3605 { IFF_NOARP
, "noarp" },
3608 { IFF_PROMISC
, "promisc" },
3610 #ifdef IFF_NOTRAILERS
3611 #ifdef NS_IMPL_COCOA
3612 /* Really means smart, notrailers is obsolete */
3613 { IFF_NOTRAILERS
, "smart" },
3615 { IFF_NOTRAILERS
, "notrailers" },
3619 { IFF_ALLMULTI
, "allmulti" },
3622 { IFF_MASTER
, "master" },
3625 { IFF_SLAVE
, "slave" },
3627 #ifdef IFF_MULTICAST
3628 { IFF_MULTICAST
, "multicast" },
3631 { IFF_PORTSEL
, "portsel" },
3633 #ifdef IFF_AUTOMEDIA
3634 { IFF_AUTOMEDIA
, "automedia" },
3637 { IFF_DYNAMIC
, "dynamic" },
3640 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3643 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3646 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3649 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3652 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3657 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3658 doc
: /* Return information about network interface named IFNAME.
3659 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3660 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3661 NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
3662 FLAGS is the current flags of the interface. */)
3663 (Lisp_Object ifname
)
3666 Lisp_Object res
= Qnil
;
3671 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
3672 && defined HAVE_GETIFADDRS && defined LLADDR)
3673 struct ifaddrs
*ifap
;
3676 CHECK_STRING (ifname
);
3678 if (sizeof rq
.ifr_name
<= SBYTES (ifname
))
3679 error ("interface name too long");
3680 strcpy (rq
.ifr_name
, SSDATA (ifname
));
3682 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3685 count
= SPECPDL_INDEX ();
3686 record_unwind_protect_int (close_file_unwind
, s
);
3689 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
3690 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3692 int flags
= rq
.ifr_flags
;
3693 const struct ifflag_def
*fp
;
3696 /* If flags is smaller than int (i.e. short) it may have the high bit set
3697 due to IFF_MULTICAST. In that case, sign extending it into
3699 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
3700 flags
= (unsigned short) rq
.ifr_flags
;
3703 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3705 if (flags
& fp
->flag_bit
)
3707 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3708 flags
-= fp
->flag_bit
;
3711 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3715 elt
= Fcons (make_number (fnum
), elt
);
3720 res
= Fcons (elt
, res
);
3723 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
3724 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3726 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3727 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3731 for (n
= 0; n
< 6; n
++)
3732 p
->u
.contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3733 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3735 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
3736 if (getifaddrs (&ifap
) != -1)
3738 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3739 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3742 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
3744 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
3745 unsigned char linkaddr
[6];
3748 if (it
->ifa_addr
->sa_family
!= AF_LINK
3749 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
3750 || sdl
->sdl_alen
!= 6)
3753 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
3754 for (n
= 0; n
< 6; n
++)
3755 p
->u
.contents
[n
] = make_number (linkaddr
[n
]);
3757 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
3761 #ifdef HAVE_FREEIFADDRS
3765 #endif /* HAVE_GETIFADDRS && LLADDR */
3767 res
= Fcons (elt
, res
);
3770 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
3771 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3774 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3775 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3777 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3781 res
= Fcons (elt
, res
);
3784 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3785 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3788 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3791 res
= Fcons (elt
, res
);
3794 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
3795 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3798 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3801 res
= Fcons (elt
, res
);
3803 return unbind_to (count
, any
? res
: Qnil
);
3806 #endif /* defined (HAVE_NET_IF_H) */
3808 /* Turn off input and output for process PROC. */
3811 deactivate_process (Lisp_Object proc
)
3814 struct Lisp_Process
*p
= XPROCESS (proc
);
3818 /* Delete GnuTLS structures in PROC, if any. */
3819 emacs_gnutls_deinit (proc
);
3820 #endif /* HAVE_GNUTLS */
3822 #ifdef ADAPTIVE_READ_BUFFERING
3823 if (p
->read_output_delay
> 0)
3825 if (--process_output_delay_count
< 0)
3826 process_output_delay_count
= 0;
3827 p
->read_output_delay
= 0;
3828 p
->read_output_skip
= 0;
3832 /* Beware SIGCHLD hereabouts. */
3834 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
3835 close_process_fd (&p
->open_fd
[i
]);
3837 inchannel
= p
->infd
;
3842 #ifdef DATAGRAM_SOCKETS
3843 if (DATAGRAM_CHAN_P (inchannel
))
3845 xfree (datagram_address
[inchannel
].sa
);
3846 datagram_address
[inchannel
].sa
= 0;
3847 datagram_address
[inchannel
].len
= 0;
3850 chan_process
[inchannel
] = Qnil
;
3851 FD_CLR (inchannel
, &input_wait_mask
);
3852 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3853 #ifdef NON_BLOCKING_CONNECT
3854 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3856 FD_CLR (inchannel
, &connect_wait_mask
);
3857 FD_CLR (inchannel
, &write_mask
);
3858 if (--num_pending_connects
< 0)
3862 if (inchannel
== max_process_desc
)
3864 /* We just closed the highest-numbered process input descriptor,
3865 so recompute the highest-numbered one now. */
3869 while (0 <= i
&& NILP (chan_process
[i
]));
3871 max_process_desc
= i
;
3877 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3879 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3880 It is read into the process' buffers or given to their filter functions.
3881 Non-nil arg PROCESS means do not return until some output has been received
3884 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
3885 and milliseconds to wait; return after that much time whether or not
3886 there is any subprocess output. If SECONDS is a floating point number,
3887 it specifies a fractional number of seconds to wait.
3888 The MILLISEC argument is obsolete and should be avoided.
3890 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3891 from PROCESS, suspending reading output from other processes.
3892 If JUST-THIS-ONE is an integer, don't run any timers either.
3893 Return non-nil if we received any output before the timeout expired. */)
3894 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3899 if (! NILP (process
))
3900 CHECK_PROCESS (process
);
3902 just_this_one
= Qnil
;
3904 if (!NILP (millisec
))
3905 { /* Obsolete calling convention using integers rather than floats. */
3906 CHECK_NUMBER (millisec
);
3908 seconds
= make_float (XINT (millisec
) / 1000.0);
3911 CHECK_NUMBER (seconds
);
3912 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3919 if (!NILP (seconds
))
3921 if (INTEGERP (seconds
))
3923 if (XINT (seconds
) > 0)
3925 secs
= XINT (seconds
);
3929 else if (FLOATP (seconds
))
3931 if (XFLOAT_DATA (seconds
) > 0)
3933 struct timespec t
= dtotimespec (XFLOAT_DATA (seconds
));
3934 secs
= min (t
.tv_sec
, WAIT_READING_MAX
);
3939 wrong_type_argument (Qnumberp
, seconds
);
3941 else if (! NILP (process
))
3945 (wait_reading_process_output (secs
, nsecs
, 0, 0,
3947 !NILP (process
) ? XPROCESS (process
) : NULL
,
3948 NILP (just_this_one
) ? 0 :
3949 !INTEGERP (just_this_one
) ? 1 : -1)
3953 /* Accept a connection for server process SERVER on CHANNEL. */
3955 static EMACS_INT connect_counter
= 0;
3958 server_accept_connection (Lisp_Object server
, int channel
)
3960 Lisp_Object proc
, caller
, name
, buffer
;
3961 Lisp_Object contact
, host
, service
;
3962 struct Lisp_Process
*ps
= XPROCESS (server
);
3963 struct Lisp_Process
*p
;
3967 struct sockaddr_in in
;
3969 struct sockaddr_in6 in6
;
3971 #ifdef HAVE_LOCAL_SOCKETS
3972 struct sockaddr_un un
;
3975 socklen_t len
= sizeof saddr
;
3978 s
= accept4 (channel
, &saddr
.sa
, &len
, SOCK_CLOEXEC
);
3987 if (code
== EWOULDBLOCK
)
3991 if (!NILP (ps
->log
))
3992 call3 (ps
->log
, server
, Qnil
,
3993 concat3 (build_string ("accept failed with code"),
3994 Fnumber_to_string (make_number (code
)),
3995 build_string ("\n")));
3999 count
= SPECPDL_INDEX ();
4000 record_unwind_protect_int (close_file_unwind
, s
);
4004 /* Setup a new process to handle the connection. */
4006 /* Generate a unique identification of the caller, and build contact
4007 information for this process. */
4010 switch (saddr
.sa
.sa_family
)
4014 Lisp_Object args
[5];
4015 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4016 args
[0] = build_string ("%d.%d.%d.%d");
4017 args
[1] = make_number (*ip
++);
4018 args
[2] = make_number (*ip
++);
4019 args
[3] = make_number (*ip
++);
4020 args
[4] = make_number (*ip
++);
4021 host
= Fformat (5, args
);
4022 service
= make_number (ntohs (saddr
.in
.sin_port
));
4024 args
[0] = build_string (" <%s:%d>");
4027 caller
= Fformat (3, args
);
4034 Lisp_Object args
[9];
4035 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4037 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4038 for (i
= 0; i
< 8; i
++)
4039 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4040 host
= Fformat (9, args
);
4041 service
= make_number (ntohs (saddr
.in
.sin_port
));
4043 args
[0] = build_string (" <[%s]:%d>");
4046 caller
= Fformat (3, args
);
4051 #ifdef HAVE_LOCAL_SOCKETS
4055 caller
= Fnumber_to_string (make_number (connect_counter
));
4056 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4060 /* Create a new buffer name for this process if it doesn't have a
4061 filter. The new buffer name is based on the buffer name or
4062 process name of the server process concatenated with the caller
4065 if (!(EQ (ps
->filter
, Qinternal_default_process_filter
)
4066 || EQ (ps
->filter
, Qt
)))
4070 buffer
= ps
->buffer
;
4072 buffer
= Fbuffer_name (buffer
);
4077 buffer
= concat2 (buffer
, caller
);
4078 buffer
= Fget_buffer_create (buffer
);
4082 /* Generate a unique name for the new server process. Combine the
4083 server process name with the caller identification. */
4085 name
= concat2 (ps
->name
, caller
);
4086 proc
= make_process (name
);
4088 chan_process
[s
] = proc
;
4090 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4092 p
= XPROCESS (proc
);
4094 /* Build new contact information for this setup. */
4095 contact
= Fcopy_sequence (ps
->childp
);
4096 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4097 contact
= Fplist_put (contact
, QChost
, host
);
4098 if (!NILP (service
))
4099 contact
= Fplist_put (contact
, QCservice
, service
);
4100 contact
= Fplist_put (contact
, QCremote
,
4101 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4102 #ifdef HAVE_GETSOCKNAME
4104 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4105 contact
= Fplist_put (contact
, QClocal
,
4106 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4109 pset_childp (p
, contact
);
4110 pset_plist (p
, Fcopy_sequence (ps
->plist
));
4111 pset_type (p
, Qnetwork
);
4113 pset_buffer (p
, buffer
);
4114 pset_sentinel (p
, ps
->sentinel
);
4115 pset_filter (p
, ps
->filter
);
4116 pset_command (p
, Qnil
);
4119 /* Discard the unwind protect for closing S. */
4120 specpdl_ptr
= specpdl
+ count
;
4122 p
->open_fd
[SUBPROCESS_STDIN
] = s
;
4125 pset_status (p
, Qrun
);
4127 /* Client processes for accepted connections are not stopped initially. */
4128 if (!EQ (p
->filter
, Qt
))
4130 FD_SET (s
, &input_wait_mask
);
4131 FD_SET (s
, &non_keyboard_wait_mask
);
4134 if (s
> max_process_desc
)
4135 max_process_desc
= s
;
4137 /* Setup coding system for new process based on server process.
4138 This seems to be the proper thing to do, as the coding system
4139 of the new process should reflect the settings at the time the
4140 server socket was opened; not the current settings. */
4142 pset_decode_coding_system (p
, ps
->decode_coding_system
);
4143 pset_encode_coding_system (p
, ps
->encode_coding_system
);
4144 setup_process_coding_systems (proc
);
4146 pset_decoding_buf (p
, empty_unibyte_string
);
4147 p
->decoding_carryover
= 0;
4148 pset_encoding_buf (p
, empty_unibyte_string
);
4150 p
->inherit_coding_system_flag
4151 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4153 if (!NILP (ps
->log
))
4154 call3 (ps
->log
, server
, proc
,
4155 concat3 (build_string ("accept from "),
4156 (STRINGP (host
) ? host
: build_string ("-")),
4157 build_string ("\n")));
4159 exec_sentinel (proc
,
4160 concat3 (build_string ("open from "),
4161 (STRINGP (host
) ? host
: build_string ("-")),
4162 build_string ("\n")));
4165 /* This variable is different from waiting_for_input in keyboard.c.
4166 It is used to communicate to a lisp process-filter/sentinel (via the
4167 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4168 for user-input when that process-filter was called.
4169 waiting_for_input cannot be used as that is by definition 0 when
4170 lisp code is being evalled.
4171 This is also used in record_asynch_buffer_change.
4172 For that purpose, this must be 0
4173 when not inside wait_reading_process_output. */
4174 static int waiting_for_user_input_p
;
4177 wait_reading_process_output_unwind (int data
)
4179 waiting_for_user_input_p
= data
;
4182 /* This is here so breakpoints can be put on it. */
4184 wait_reading_process_output_1 (void)
4188 /* Read and dispose of subprocess output while waiting for timeout to
4189 elapse and/or keyboard input to be available.
4193 If negative, gobble data immediately available but don't wait for any.
4196 an additional duration to wait, measured in nanoseconds
4197 If TIME_LIMIT is zero, then:
4198 If NSECS == 0, there is no limit.
4199 If NSECS > 0, the timeout consists of NSECS only.
4200 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
4203 0 to ignore keyboard input, or
4204 1 to return when input is available, or
4205 -1 meaning caller will actually read the input, so don't throw to
4206 the quit handler, or
4208 DO_DISPLAY means redisplay should be done to show subprocess
4209 output that arrives.
4211 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4212 (and gobble terminal input into the buffer if any arrives).
4214 If WAIT_PROC is specified, wait until something arrives from that
4215 process. The return value is true if we read some input from
4218 If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC
4219 (suspending output from other processes). A negative value
4220 means don't run any timers either.
4222 If WAIT_PROC is specified, then the function returns true if we
4223 received input from that process before the timeout elapsed.
4224 Otherwise, return true if we received input from any process. */
4227 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
4229 Lisp_Object wait_for_cell
,
4230 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4240 struct timespec timeout
, end_time
;
4241 int wait_channel
= -1;
4242 bool got_some_input
= 0;
4243 ptrdiff_t count
= SPECPDL_INDEX ();
4245 FD_ZERO (&Available
);
4248 if (time_limit
== 0 && nsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4249 && !(CONSP (wait_proc
->status
)
4250 && EQ (XCAR (wait_proc
->status
), Qexit
)))
4251 message1 ("Blocking call to accept-process-output with quit inhibited!!");
4253 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4254 if (wait_proc
!= NULL
)
4255 wait_channel
= wait_proc
->infd
;
4257 record_unwind_protect_int (wait_reading_process_output_unwind
,
4258 waiting_for_user_input_p
);
4259 waiting_for_user_input_p
= read_kbd
;
4266 else if (TYPE_MAXIMUM (time_t) < time_limit
)
4267 time_limit
= TYPE_MAXIMUM (time_t);
4269 /* Since we may need to wait several times,
4270 compute the absolute time to return at. */
4271 if (time_limit
|| nsecs
> 0)
4273 timeout
= make_timespec (time_limit
, nsecs
);
4274 end_time
= timespec_add (current_timespec (), timeout
);
4279 bool timeout_reduced_for_timers
= 0;
4281 /* If calling from keyboard input, do not quit
4282 since we want to return C-g as an input character.
4283 Otherwise, do pending quit if requested. */
4286 else if (pending_signals
)
4287 process_pending_signals ();
4289 /* Exit now if the cell we're waiting for became non-nil. */
4290 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4293 /* Compute time from now till when time limit is up. */
4294 /* Exit if already run out. */
4297 /* A negative timeout means
4298 gobble output available now
4299 but don't wait at all. */
4301 timeout
= make_timespec (0, 0);
4303 else if (time_limit
|| nsecs
> 0)
4305 struct timespec now
= current_timespec ();
4306 if (timespec_cmp (end_time
, now
) <= 0)
4308 timeout
= timespec_sub (end_time
, now
);
4312 timeout
= make_timespec (100000, 0);
4315 /* Normally we run timers here.
4316 But not if wait_for_cell; in those cases,
4317 the wait is supposed to be short,
4318 and those callers cannot handle running arbitrary Lisp code here. */
4319 if (NILP (wait_for_cell
)
4320 && just_wait_proc
>= 0)
4322 struct timespec timer_delay
;
4326 unsigned old_timers_run
= timers_run
;
4327 struct buffer
*old_buffer
= current_buffer
;
4328 Lisp_Object old_window
= selected_window
;
4330 timer_delay
= timer_check ();
4332 /* If a timer has run, this might have changed buffers
4333 an alike. Make read_key_sequence aware of that. */
4334 if (timers_run
!= old_timers_run
4335 && (old_buffer
!= current_buffer
4336 || !EQ (old_window
, selected_window
))
4337 && waiting_for_user_input_p
== -1)
4338 record_asynch_buffer_change ();
4340 if (timers_run
!= old_timers_run
&& do_display
)
4341 /* We must retry, since a timer may have requeued itself
4342 and that could alter the time_delay. */
4343 redisplay_preserve_echo_area (9);
4347 while (!detect_input_pending ());
4349 /* If there is unread keyboard input, also return. */
4351 && requeued_events_pending_p ())
4354 /* A negative timeout means do not wait at all. */
4357 if (timespec_valid_p (timer_delay
))
4359 if (timespec_cmp (timer_delay
, timeout
) < 0)
4361 timeout
= timer_delay
;
4362 timeout_reduced_for_timers
= 1;
4367 /* This is so a breakpoint can be put here. */
4368 wait_reading_process_output_1 ();
4373 /* Cause C-g and alarm signals to take immediate action,
4374 and cause input available signals to zero out timeout.
4376 It is important that we do this before checking for process
4377 activity. If we get a SIGCHLD after the explicit checks for
4378 process activity, timeout is the only way we will know. */
4380 set_waiting_for_input (&timeout
);
4382 /* If status of something has changed, and no input is
4383 available, notify the user of the change right away. After
4384 this explicit check, we'll let the SIGCHLD handler zap
4385 timeout to get our attention. */
4386 if (update_tick
!= process_tick
)
4391 if (kbd_on_hold_p ())
4394 Atemp
= input_wait_mask
;
4397 timeout
= make_timespec (0, 0);
4398 if ((pselect (max (max_process_desc
, max_input_desc
) + 1,
4400 #ifdef NON_BLOCKING_CONNECT
4401 (num_pending_connects
> 0 ? &Ctemp
: NULL
),
4405 NULL
, &timeout
, NULL
)
4408 /* It's okay for us to do this and then continue with
4409 the loop, since timeout has already been zeroed out. */
4410 clear_waiting_for_input ();
4411 status_notify (NULL
);
4412 if (do_display
) redisplay_preserve_echo_area (13);
4416 /* Don't wait for output from a non-running process. Just
4417 read whatever data has already been received. */
4418 if (wait_proc
&& wait_proc
->raw_status_new
)
4419 update_status (wait_proc
);
4421 && ! EQ (wait_proc
->status
, Qrun
)
4422 && ! EQ (wait_proc
->status
, Qconnect
))
4424 bool read_some_bytes
= 0;
4426 clear_waiting_for_input ();
4427 XSETPROCESS (proc
, wait_proc
);
4429 /* Read data from the process, until we exhaust it. */
4430 while (wait_proc
->infd
>= 0)
4432 int nread
= read_process_output (proc
, wait_proc
->infd
);
4438 got_some_input
= read_some_bytes
= 1;
4439 else if (nread
== -1 && (errno
== EIO
|| errno
== EAGAIN
))
4442 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4446 if (read_some_bytes
&& do_display
)
4447 redisplay_preserve_echo_area (10);
4452 /* Wait till there is something to do */
4454 if (wait_proc
&& just_wait_proc
)
4456 if (wait_proc
->infd
< 0) /* Terminated */
4458 FD_SET (wait_proc
->infd
, &Available
);
4462 else if (!NILP (wait_for_cell
))
4464 Available
= non_process_wait_mask
;
4471 Available
= non_keyboard_wait_mask
;
4473 Available
= input_wait_mask
;
4474 Writeok
= write_mask
;
4475 #ifdef SELECT_CANT_DO_WRITE_MASK
4480 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4483 /* If frame size has changed or the window is newly mapped,
4484 redisplay now, before we start to wait. There is a race
4485 condition here; if a SIGIO arrives between now and the select
4486 and indicates that a frame is trashed, the select may block
4487 displaying a trashed screen. */
4488 if (frame_garbaged
&& do_display
)
4490 clear_waiting_for_input ();
4491 redisplay_preserve_echo_area (11);
4493 set_waiting_for_input (&timeout
);
4496 /* Skip the `select' call if input is available and we're
4497 waiting for keyboard input or a cell change (which can be
4498 triggered by processing X events). In the latter case, set
4499 nfds to 1 to avoid breaking the loop. */
4501 if ((read_kbd
|| !NILP (wait_for_cell
))
4502 && detect_input_pending ())
4504 nfds
= read_kbd
? 0 : 1;
4511 #ifdef ADAPTIVE_READ_BUFFERING
4512 /* Set the timeout for adaptive read buffering if any
4513 process has non-zero read_output_skip and non-zero
4514 read_output_delay, and we are not reading output for a
4515 specific wait_channel. It is not executed if
4516 Vprocess_adaptive_read_buffering is nil. */
4517 if (process_output_skip
&& check_delay
> 0)
4519 int nsecs
= timeout
.tv_nsec
;
4520 if (timeout
.tv_sec
> 0 || nsecs
> READ_OUTPUT_DELAY_MAX
)
4521 nsecs
= READ_OUTPUT_DELAY_MAX
;
4522 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4524 proc
= chan_process
[channel
];
4527 /* Find minimum non-zero read_output_delay among the
4528 processes with non-zero read_output_skip. */
4529 if (XPROCESS (proc
)->read_output_delay
> 0)
4532 if (!XPROCESS (proc
)->read_output_skip
)
4534 FD_CLR (channel
, &Available
);
4535 XPROCESS (proc
)->read_output_skip
= 0;
4536 if (XPROCESS (proc
)->read_output_delay
< nsecs
)
4537 nsecs
= XPROCESS (proc
)->read_output_delay
;
4540 timeout
= make_timespec (0, nsecs
);
4541 process_output_skip
= 0;
4545 #if defined (HAVE_NS)
4547 #elif defined (HAVE_GLIB)
4552 (max (max_process_desc
, max_input_desc
) + 1,
4554 (check_write
? &Writeok
: 0),
4555 NULL
, &timeout
, NULL
);
4558 /* GnuTLS buffers data internally. In lowat mode it leaves
4559 some data in the TCP buffers so that select works, but
4560 with custom pull/push functions we need to check if some
4561 data is available in the buffers manually. */
4566 /* We're not waiting on a specific process, so loop
4567 through all the channels and check for data.
4568 This is a workaround needed for some versions of
4569 the gnutls library -- 2.12.14 has been confirmed
4571 http://comments.gmane.org/gmane.emacs.devel/145074 */
4572 for (channel
= 0; channel
< FD_SETSIZE
; ++channel
)
4573 if (! NILP (chan_process
[channel
]))
4575 struct Lisp_Process
*p
=
4576 XPROCESS (chan_process
[channel
]);
4577 if (p
&& p
->gnutls_p
&& p
->infd
4578 && ((emacs_gnutls_record_check_pending
4583 FD_SET (p
->infd
, &Available
);
4589 /* Check this specific channel. */
4590 if (wait_proc
->gnutls_p
/* Check for valid process. */
4591 /* Do we have pending data? */
4592 && ((emacs_gnutls_record_check_pending
4593 (wait_proc
->gnutls_state
))
4597 /* Set to Available. */
4598 FD_SET (wait_proc
->infd
, &Available
);
4607 /* Make C-g and alarm signals set flags again */
4608 clear_waiting_for_input ();
4610 /* If we woke up due to SIGWINCH, actually change size now. */
4611 do_pending_window_change (0);
4613 if ((time_limit
|| nsecs
) && nfds
== 0 && ! timeout_reduced_for_timers
)
4614 /* We waited the full specified time, so return now. */
4618 if (xerrno
== EINTR
)
4620 else if (xerrno
== EBADF
)
4623 report_file_errno ("Failed select", Qnil
, xerrno
);
4628 FD_ZERO (&Available
);
4632 /* Check for keyboard input */
4633 /* If there is any, return immediately
4634 to give it higher priority than subprocesses */
4638 unsigned old_timers_run
= timers_run
;
4639 struct buffer
*old_buffer
= current_buffer
;
4640 Lisp_Object old_window
= selected_window
;
4643 if (detect_input_pending_run_timers (do_display
))
4645 swallow_events (do_display
);
4646 if (detect_input_pending_run_timers (do_display
))
4650 /* If a timer has run, this might have changed buffers
4651 an alike. Make read_key_sequence aware of that. */
4652 if (timers_run
!= old_timers_run
4653 && waiting_for_user_input_p
== -1
4654 && (old_buffer
!= current_buffer
4655 || !EQ (old_window
, selected_window
)))
4656 record_asynch_buffer_change ();
4662 /* If there is unread keyboard input, also return. */
4664 && requeued_events_pending_p ())
4667 /* If we are not checking for keyboard input now,
4668 do process events (but don't run any timers).
4669 This is so that X events will be processed.
4670 Otherwise they may have to wait until polling takes place.
4671 That would causes delays in pasting selections, for example.
4673 (We used to do this only if wait_for_cell.) */
4674 if (read_kbd
== 0 && detect_input_pending ())
4676 swallow_events (do_display
);
4677 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4678 if (detect_input_pending ())
4683 /* Exit now if the cell we're waiting for became non-nil. */
4684 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4688 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4689 go read it. This can happen with X on BSD after logging out.
4690 In that case, there really is no input and no SIGIO,
4691 but select says there is input. */
4693 if (read_kbd
&& interrupt_input
4694 && keyboard_bit_set (&Available
) && ! noninteractive
)
4695 handle_input_available_signal (SIGIO
);
4699 got_some_input
|= nfds
> 0;
4701 /* If checking input just got us a size-change event from X,
4702 obey it now if we should. */
4703 if (read_kbd
|| ! NILP (wait_for_cell
))
4704 do_pending_window_change (0);
4706 /* Check for data from a process. */
4707 if (no_avail
|| nfds
== 0)
4710 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4712 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4714 && ((d
->condition
& FOR_READ
4715 && FD_ISSET (channel
, &Available
))
4716 || (d
->condition
& FOR_WRITE
4717 && FD_ISSET (channel
, &write_mask
))))
4718 d
->func (channel
, d
->data
);
4721 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4723 if (FD_ISSET (channel
, &Available
)
4724 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4725 && !FD_ISSET (channel
, &non_process_wait_mask
))
4729 /* If waiting for this channel, arrange to return as
4730 soon as no more input to be processed. No more
4732 if (wait_channel
== channel
)
4738 proc
= chan_process
[channel
];
4742 /* If this is a server stream socket, accept connection. */
4743 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4745 server_accept_connection (proc
, channel
);
4749 /* Read data from the process, starting with our
4750 buffered-ahead character if we have one. */
4752 nread
= read_process_output (proc
, channel
);
4755 /* Since read_process_output can run a filter,
4756 which can call accept-process-output,
4757 don't try to read from any other processes
4758 before doing the select again. */
4759 FD_ZERO (&Available
);
4762 redisplay_preserve_echo_area (12);
4765 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4768 else if (nread
== -1 && errno
== EAGAIN
)
4771 /* FIXME: Is this special case still needed? */
4772 /* Note that we cannot distinguish between no input
4773 available now and a closed pipe.
4774 With luck, a closed pipe will be accompanied by
4775 subprocess termination and SIGCHLD. */
4776 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4780 /* On some OSs with ptys, when the process on one end of
4781 a pty exits, the other end gets an error reading with
4782 errno = EIO instead of getting an EOF (0 bytes read).
4783 Therefore, if we get an error reading and errno =
4784 EIO, just continue, because the child process has
4785 exited and should clean itself up soon (e.g. when we
4787 else if (nread
== -1 && errno
== EIO
)
4789 struct Lisp_Process
*p
= XPROCESS (proc
);
4791 /* Clear the descriptor now, so we only raise the
4793 FD_CLR (channel
, &input_wait_mask
);
4794 FD_CLR (channel
, &non_keyboard_wait_mask
);
4798 /* If the EIO occurs on a pty, the SIGCHLD handler's
4799 waitpid call will not find the process object to
4800 delete. Do it here. */
4801 p
->tick
= ++process_tick
;
4802 pset_status (p
, Qfailed
);
4805 #endif /* HAVE_PTYS */
4806 /* If we can detect process termination, don't consider the
4807 process gone just because its pipe is closed. */
4808 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4812 /* Preserve status of processes already terminated. */
4813 XPROCESS (proc
)->tick
= ++process_tick
;
4814 deactivate_process (proc
);
4815 if (XPROCESS (proc
)->raw_status_new
)
4816 update_status (XPROCESS (proc
));
4817 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4818 pset_status (XPROCESS (proc
),
4819 list2 (Qexit
, make_number (256)));
4822 #ifdef NON_BLOCKING_CONNECT
4823 if (FD_ISSET (channel
, &Writeok
)
4824 && FD_ISSET (channel
, &connect_wait_mask
))
4826 struct Lisp_Process
*p
;
4828 FD_CLR (channel
, &connect_wait_mask
);
4829 FD_CLR (channel
, &write_mask
);
4830 if (--num_pending_connects
< 0)
4833 proc
= chan_process
[channel
];
4837 p
= XPROCESS (proc
);
4840 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4841 So only use it on systems where it is known to work. */
4843 socklen_t xlen
= sizeof (xerrno
);
4844 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4849 struct sockaddr pname
;
4850 socklen_t pnamelen
= sizeof (pname
);
4852 /* If connection failed, getpeername will fail. */
4854 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4856 /* Obtain connect failure code through error slippage. */
4859 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4866 p
->tick
= ++process_tick
;
4867 pset_status (p
, list2 (Qfailed
, make_number (xerrno
)));
4868 deactivate_process (proc
);
4872 pset_status (p
, Qrun
);
4873 /* Execute the sentinel here. If we had relied on
4874 status_notify to do it later, it will read input
4875 from the process before calling the sentinel. */
4876 exec_sentinel (proc
, build_string ("open\n"));
4877 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4879 FD_SET (p
->infd
, &input_wait_mask
);
4880 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4884 #endif /* NON_BLOCKING_CONNECT */
4885 } /* End for each file descriptor. */
4886 } /* End while exit conditions not met. */
4888 unbind_to (count
, Qnil
);
4890 /* If calling from keyboard input, do not quit
4891 since we want to return C-g as an input character.
4892 Otherwise, do pending quit if requested. */
4895 /* Prevent input_pending from remaining set if we quit. */
4896 clear_input_pending ();
4900 return got_some_input
;
4903 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4906 read_process_output_call (Lisp_Object fun_and_args
)
4908 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4912 read_process_output_error_handler (Lisp_Object error_val
)
4914 cmd_error_internal (error_val
, "error in process filter: ");
4916 update_echo_area ();
4917 Fsleep_for (make_number (2), Qnil
);
4922 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
4924 struct coding_system
*coding
);
4926 /* Read pending output from the process channel,
4927 starting with our buffered-ahead character if we have one.
4928 Yield number of decoded characters read.
4930 This function reads at most 4096 characters.
4931 If you want to read all available subprocess output,
4932 you must call it repeatedly until it returns zero.
4934 The characters read are decoded according to PROC's coding-system
4938 read_process_output (Lisp_Object proc
, register int channel
)
4940 register ssize_t nbytes
;
4942 register struct Lisp_Process
*p
= XPROCESS (proc
);
4943 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4944 int carryover
= p
->decoding_carryover
;
4946 ptrdiff_t count
= SPECPDL_INDEX ();
4947 Lisp_Object odeactivate
;
4949 chars
= alloca (carryover
+ readmax
);
4951 /* See the comment above. */
4952 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
4954 #ifdef DATAGRAM_SOCKETS
4955 /* We have a working select, so proc_buffered_char is always -1. */
4956 if (DATAGRAM_CHAN_P (channel
))
4958 socklen_t len
= datagram_address
[channel
].len
;
4959 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
4960 0, datagram_address
[channel
].sa
, &len
);
4965 bool buffered
= proc_buffered_char
[channel
] >= 0;
4968 chars
[carryover
] = proc_buffered_char
[channel
];
4969 proc_buffered_char
[channel
] = -1;
4973 nbytes
= emacs_gnutls_read (p
, chars
+ carryover
+ buffered
,
4974 readmax
- buffered
);
4977 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
4978 readmax
- buffered
);
4979 #ifdef ADAPTIVE_READ_BUFFERING
4980 if (nbytes
> 0 && p
->adaptive_read_buffering
)
4982 int delay
= p
->read_output_delay
;
4985 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
4988 process_output_delay_count
++;
4989 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
4992 else if (delay
> 0 && nbytes
== readmax
- buffered
)
4994 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
4996 process_output_delay_count
--;
4998 p
->read_output_delay
= delay
;
5001 p
->read_output_skip
= 1;
5002 process_output_skip
= 1;
5007 nbytes
+= buffered
&& nbytes
<= 0;
5010 p
->decoding_carryover
= 0;
5012 /* At this point, NBYTES holds number of bytes just received
5013 (including the one in proc_buffered_char[channel]). */
5016 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5018 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5021 /* Now set NBYTES how many bytes we must decode. */
5022 nbytes
+= carryover
;
5024 odeactivate
= Vdeactivate_mark
;
5025 /* There's no good reason to let process filters change the current
5026 buffer, and many callers of accept-process-output, sit-for, and
5027 friends don't expect current-buffer to be changed from under them. */
5028 record_unwind_current_buffer ();
5030 read_and_dispose_of_process_output (p
, chars
, nbytes
, coding
);
5032 /* Handling the process output should not deactivate the mark. */
5033 Vdeactivate_mark
= odeactivate
;
5035 unbind_to (count
, Qnil
);
5040 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5042 struct coding_system
*coding
)
5044 Lisp_Object outstream
= p
->filter
;
5046 bool outer_running_asynch_code
= running_asynch_code
;
5047 int waiting
= waiting_for_user_input_p
;
5049 /* No need to gcpro these, because all we do with them later
5050 is test them for EQness, and none of them should be a string. */
5052 Lisp_Object obuffer
, okeymap
;
5053 XSETBUFFER (obuffer
, current_buffer
);
5054 okeymap
= BVAR (current_buffer
, keymap
);
5057 /* We inhibit quit here instead of just catching it so that
5058 hitting ^G when a filter happens to be running won't screw
5060 specbind (Qinhibit_quit
, Qt
);
5061 specbind (Qlast_nonmenu_event
, Qt
);
5063 /* In case we get recursively called,
5064 and we already saved the match data nonrecursively,
5065 save the same match data in safely recursive fashion. */
5066 if (outer_running_asynch_code
)
5069 /* Don't clobber the CURRENT match data, either! */
5070 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5071 restore_search_regs ();
5072 record_unwind_save_match_data ();
5073 Fset_match_data (tem
, Qt
);
5076 /* For speed, if a search happens within this code,
5077 save the match data in a special nonrecursive fashion. */
5078 running_asynch_code
= 1;
5080 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5081 text
= coding
->dst_object
;
5082 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5083 /* A new coding system might be found. */
5084 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5086 pset_decode_coding_system (p
, Vlast_coding_system_used
);
5088 /* Don't call setup_coding_system for
5089 proc_decode_coding_system[channel] here. It is done in
5090 detect_coding called via decode_coding above. */
5092 /* If a coding system for encoding is not yet decided, we set
5093 it as the same as coding-system for decoding.
5095 But, before doing that we must check if
5096 proc_encode_coding_system[p->outfd] surely points to a
5097 valid memory because p->outfd will be changed once EOF is
5098 sent to the process. */
5099 if (NILP (p
->encode_coding_system
)
5100 && proc_encode_coding_system
[p
->outfd
])
5102 pset_encode_coding_system
5103 (p
, coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
));
5104 setup_coding_system (p
->encode_coding_system
,
5105 proc_encode_coding_system
[p
->outfd
]);
5109 if (coding
->carryover_bytes
> 0)
5111 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5112 pset_decoding_buf (p
, make_uninit_string (coding
->carryover_bytes
));
5113 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5114 coding
->carryover_bytes
);
5115 p
->decoding_carryover
= coding
->carryover_bytes
;
5117 if (SBYTES (text
) > 0)
5118 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5119 sometimes it's simply wrong to wrap (e.g. when called from
5120 accept-process-output). */
5121 internal_condition_case_1 (read_process_output_call
,
5122 list3 (outstream
, make_lisp_proc (p
), text
),
5123 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5124 read_process_output_error_handler
);
5126 /* If we saved the match data nonrecursively, restore it now. */
5127 restore_search_regs ();
5128 running_asynch_code
= outer_running_asynch_code
;
5130 /* Restore waiting_for_user_input_p as it was
5131 when we were called, in case the filter clobbered it. */
5132 waiting_for_user_input_p
= waiting
;
5134 #if 0 /* Call record_asynch_buffer_change unconditionally,
5135 because we might have changed minor modes or other things
5136 that affect key bindings. */
5137 if (! EQ (Fcurrent_buffer (), obuffer
)
5138 || ! EQ (current_buffer
->keymap
, okeymap
))
5140 /* But do it only if the caller is actually going to read events.
5141 Otherwise there's no need to make him wake up, and it could
5142 cause trouble (for example it would make sit_for return). */
5143 if (waiting_for_user_input_p
== -1)
5144 record_asynch_buffer_change ();
5147 DEFUN ("internal-default-process-filter", Finternal_default_process_filter
,
5148 Sinternal_default_process_filter
, 2, 2, 0,
5149 doc
: /* Function used as default process filter. */)
5150 (Lisp_Object proc
, Lisp_Object text
)
5152 struct Lisp_Process
*p
;
5155 CHECK_PROCESS (proc
);
5156 p
= XPROCESS (proc
);
5157 CHECK_STRING (text
);
5159 if (!NILP (p
->buffer
) && BUFFER_LIVE_P (XBUFFER (p
->buffer
)))
5161 Lisp_Object old_read_only
;
5162 ptrdiff_t old_begv
, old_zv
;
5163 ptrdiff_t old_begv_byte
, old_zv_byte
;
5164 ptrdiff_t before
, before_byte
;
5165 ptrdiff_t opoint_byte
;
5168 Fset_buffer (p
->buffer
);
5170 opoint_byte
= PT_BYTE
;
5171 old_read_only
= BVAR (current_buffer
, read_only
);
5174 old_begv_byte
= BEGV_BYTE
;
5175 old_zv_byte
= ZV_BYTE
;
5177 bset_read_only (current_buffer
, Qnil
);
5179 /* Insert new output into buffer at the current end-of-output
5180 marker, thus preserving logical ordering of input and output. */
5181 if (XMARKER (p
->mark
)->buffer
)
5182 set_point_from_marker (p
->mark
);
5184 SET_PT_BOTH (ZV
, ZV_BYTE
);
5186 before_byte
= PT_BYTE
;
5188 /* If the output marker is outside of the visible region, save
5189 the restriction and widen. */
5190 if (! (BEGV
<= PT
&& PT
<= ZV
))
5193 /* Adjust the multibyteness of TEXT to that of the buffer. */
5194 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5195 != ! STRING_MULTIBYTE (text
))
5196 text
= (STRING_MULTIBYTE (text
)
5197 ? Fstring_as_unibyte (text
)
5198 : Fstring_to_multibyte (text
));
5199 /* Insert before markers in case we are inserting where
5200 the buffer's mark is, and the user's next command is Meta-y. */
5201 insert_from_string_before_markers (text
, 0, 0,
5202 SCHARS (text
), SBYTES (text
), 0);
5204 /* Make sure the process marker's position is valid when the
5205 process buffer is changed in the signal_after_change above.
5206 W3 is known to do that. */
5207 if (BUFFERP (p
->buffer
)
5208 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5209 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5211 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5213 update_mode_lines
++;
5215 /* Make sure opoint and the old restrictions
5216 float ahead of any new text just as point would. */
5217 if (opoint
>= before
)
5219 opoint
+= PT
- before
;
5220 opoint_byte
+= PT_BYTE
- before_byte
;
5222 if (old_begv
> before
)
5224 old_begv
+= PT
- before
;
5225 old_begv_byte
+= PT_BYTE
- before_byte
;
5227 if (old_zv
>= before
)
5229 old_zv
+= PT
- before
;
5230 old_zv_byte
+= PT_BYTE
- before_byte
;
5233 /* If the restriction isn't what it should be, set it. */
5234 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5235 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5237 bset_read_only (current_buffer
, old_read_only
);
5238 SET_PT_BOTH (opoint
, opoint_byte
);
5243 /* Sending data to subprocess. */
5245 /* In send_process, when a write fails temporarily,
5246 wait_reading_process_output is called. It may execute user code,
5247 e.g. timers, that attempts to write new data to the same process.
5248 We must ensure that data is sent in the right order, and not
5249 interspersed half-completed with other writes (Bug#10815). This is
5250 handled by the write_queue element of struct process. It is a list
5251 with each entry having the form
5253 (string . (offset . length))
5255 where STRING is a lisp string, OFFSET is the offset into the
5256 string's byte sequence from which we should begin to send, and
5257 LENGTH is the number of bytes left to send. */
5259 /* Create a new entry in write_queue.
5260 INPUT_OBJ should be a buffer, string Qt, or Qnil.
5261 BUF is a pointer to the string sequence of the input_obj or a C
5262 string in case of Qt or Qnil. */
5265 write_queue_push (struct Lisp_Process
*p
, Lisp_Object input_obj
,
5266 const char *buf
, ptrdiff_t len
, bool front
)
5269 Lisp_Object entry
, obj
;
5271 if (STRINGP (input_obj
))
5273 offset
= buf
- SSDATA (input_obj
);
5279 obj
= make_unibyte_string (buf
, len
);
5282 entry
= Fcons (obj
, Fcons (make_number (offset
), make_number (len
)));
5285 pset_write_queue (p
, Fcons (entry
, p
->write_queue
));
5287 pset_write_queue (p
, nconc2 (p
->write_queue
, list1 (entry
)));
5290 /* Remove the first element in the write_queue of process P, put its
5291 contents in OBJ, BUF and LEN, and return true. If the
5292 write_queue is empty, return false. */
5295 write_queue_pop (struct Lisp_Process
*p
, Lisp_Object
*obj
,
5296 const char **buf
, ptrdiff_t *len
)
5298 Lisp_Object entry
, offset_length
;
5301 if (NILP (p
->write_queue
))
5304 entry
= XCAR (p
->write_queue
);
5305 pset_write_queue (p
, XCDR (p
->write_queue
));
5307 *obj
= XCAR (entry
);
5308 offset_length
= XCDR (entry
);
5310 *len
= XINT (XCDR (offset_length
));
5311 offset
= XINT (XCAR (offset_length
));
5312 *buf
= SSDATA (*obj
) + offset
;
5317 /* Send some data to process PROC.
5318 BUF is the beginning of the data; LEN is the number of characters.
5319 OBJECT is the Lisp object that the data comes from. If OBJECT is
5320 nil or t, it means that the data comes from C string.
5322 If OBJECT is not nil, the data is encoded by PROC's coding-system
5323 for encoding before it is sent.
5325 This function can evaluate Lisp code and can garbage collect. */
5328 send_process (Lisp_Object proc
, const char *buf
, ptrdiff_t len
,
5331 struct Lisp_Process
*p
= XPROCESS (proc
);
5333 struct coding_system
*coding
;
5335 if (p
->raw_status_new
)
5337 if (! EQ (p
->status
, Qrun
))
5338 error ("Process %s not running", SDATA (p
->name
));
5340 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5342 coding
= proc_encode_coding_system
[p
->outfd
];
5343 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5345 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5346 || (BUFFERP (object
)
5347 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5350 pset_encode_coding_system
5351 (p
, complement_process_encoding_system (p
->encode_coding_system
));
5352 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5354 /* The coding system for encoding was changed to raw-text
5355 because we sent a unibyte text previously. Now we are
5356 sending a multibyte text, thus we must encode it by the
5357 original coding system specified for the current process.
5359 Another reason we come here is that the coding system
5360 was just complemented and a new one was returned by
5361 complement_process_encoding_system. */
5362 setup_coding_system (p
->encode_coding_system
, coding
);
5363 Vlast_coding_system_used
= p
->encode_coding_system
;
5365 coding
->src_multibyte
= 1;
5369 coding
->src_multibyte
= 0;
5370 /* For sending a unibyte text, character code conversion should
5371 not take place but EOL conversion should. So, setup raw-text
5372 or one of the subsidiary if we have not yet done it. */
5373 if (CODING_REQUIRE_ENCODING (coding
))
5375 if (CODING_REQUIRE_FLUSHING (coding
))
5377 /* But, before changing the coding, we must flush out data. */
5378 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5379 send_process (proc
, "", 0, Qt
);
5380 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5382 setup_coding_system (raw_text_coding_system
5383 (Vlast_coding_system_used
),
5385 coding
->src_multibyte
= 0;
5388 coding
->dst_multibyte
= 0;
5390 if (CODING_REQUIRE_ENCODING (coding
))
5392 coding
->dst_object
= Qt
;
5393 if (BUFFERP (object
))
5395 ptrdiff_t from_byte
, from
, to
;
5396 ptrdiff_t save_pt
, save_pt_byte
;
5397 struct buffer
*cur
= current_buffer
;
5399 set_buffer_internal (XBUFFER (object
));
5400 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5402 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5403 from
= BYTE_TO_CHAR (from_byte
);
5404 to
= BYTE_TO_CHAR (from_byte
+ len
);
5405 TEMP_SET_PT_BOTH (from
, from_byte
);
5406 encode_coding_object (coding
, object
, from
, from_byte
,
5407 to
, from_byte
+ len
, Qt
);
5408 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5409 set_buffer_internal (cur
);
5411 else if (STRINGP (object
))
5413 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5414 SBYTES (object
), Qt
);
5418 coding
->dst_object
= make_unibyte_string (buf
, len
);
5419 coding
->produced
= len
;
5422 len
= coding
->produced
;
5423 object
= coding
->dst_object
;
5424 buf
= SSDATA (object
);
5427 /* If there is already data in the write_queue, put the new data
5428 in the back of queue. Otherwise, ignore it. */
5429 if (!NILP (p
->write_queue
))
5430 write_queue_push (p
, object
, buf
, len
, 0);
5432 do /* while !NILP (p->write_queue) */
5434 ptrdiff_t cur_len
= -1;
5435 const char *cur_buf
;
5436 Lisp_Object cur_object
;
5438 /* If write_queue is empty, ignore it. */
5439 if (!write_queue_pop (p
, &cur_object
, &cur_buf
, &cur_len
))
5443 cur_object
= object
;
5448 /* Send this batch, using one or more write calls. */
5449 ptrdiff_t written
= 0;
5450 int outfd
= p
->outfd
;
5451 #ifdef DATAGRAM_SOCKETS
5452 if (DATAGRAM_CHAN_P (outfd
))
5454 rv
= sendto (outfd
, cur_buf
, cur_len
,
5455 0, datagram_address
[outfd
].sa
,
5456 datagram_address
[outfd
].len
);
5459 else if (errno
== EMSGSIZE
)
5460 report_file_error ("Sending datagram", proc
);
5467 written
= emacs_gnutls_write (p
, cur_buf
, cur_len
);
5470 written
= emacs_write_sig (outfd
, cur_buf
, cur_len
);
5471 rv
= (written
? 0 : -1);
5472 #ifdef ADAPTIVE_READ_BUFFERING
5473 if (p
->read_output_delay
> 0
5474 && p
->adaptive_read_buffering
== 1)
5476 p
->read_output_delay
= 0;
5477 process_output_delay_count
--;
5478 p
->read_output_skip
= 0;
5487 || errno
== EWOULDBLOCK
5490 /* Buffer is full. Wait, accepting input;
5491 that may allow the program
5492 to finish doing output and read more. */
5494 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5495 /* A gross hack to work around a bug in FreeBSD.
5496 In the following sequence, read(2) returns
5500 write(2) 954 bytes, get EAGAIN
5501 read(2) 1024 bytes in process_read_output
5502 read(2) 11 bytes in process_read_output
5504 That is, read(2) returns more bytes than have
5505 ever been written successfully. The 1033 bytes
5506 read are the 1022 bytes written successfully
5507 after processing (for example with CRs added if
5508 the terminal is set up that way which it is
5509 here). The same bytes will be seen again in a
5510 later read(2), without the CRs. */
5512 if (errno
== EAGAIN
)
5515 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5517 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5519 /* Put what we should have written in wait_queue. */
5520 write_queue_push (p
, cur_object
, cur_buf
, cur_len
, 1);
5521 wait_reading_process_output (0, 20 * 1000 * 1000,
5522 0, 0, Qnil
, NULL
, 0);
5523 /* Reread queue, to see what is left. */
5526 else if (errno
== EPIPE
)
5528 p
->raw_status_new
= 0;
5529 pset_status (p
, list2 (Qexit
, make_number (256)));
5530 p
->tick
= ++process_tick
;
5531 deactivate_process (proc
);
5532 error ("process %s no longer connected to pipe; closed it",
5536 /* This is a real error. */
5537 report_file_error ("Writing to process", proc
);
5543 while (!NILP (p
->write_queue
));
5546 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5548 doc
: /* Send current contents of region as input to PROCESS.
5549 PROCESS may be a process, a buffer, the name of a process or buffer, or
5550 nil, indicating the current buffer's process.
5551 Called from program, takes three arguments, PROCESS, START and END.
5552 If the region is more than 500 characters long,
5553 it is sent in several bunches. This may happen even for shorter regions.
5554 Output from processes can arrive in between bunches. */)
5555 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5557 Lisp_Object proc
= get_process (process
);
5558 ptrdiff_t start_byte
, end_byte
;
5560 validate_region (&start
, &end
);
5562 start_byte
= CHAR_TO_BYTE (XINT (start
));
5563 end_byte
= CHAR_TO_BYTE (XINT (end
));
5565 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5566 move_gap_both (XINT (start
), start_byte
);
5568 send_process (proc
, (char *) BYTE_POS_ADDR (start_byte
),
5569 end_byte
- start_byte
, Fcurrent_buffer ());
5574 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5576 doc
: /* Send PROCESS the contents of STRING as input.
5577 PROCESS may be a process, a buffer, the name of a process or buffer, or
5578 nil, indicating the current buffer's process.
5579 If STRING is more than 500 characters long,
5580 it is sent in several bunches. This may happen even for shorter strings.
5581 Output from processes can arrive in between bunches. */)
5582 (Lisp_Object process
, Lisp_Object string
)
5585 CHECK_STRING (string
);
5586 proc
= get_process (process
);
5587 send_process (proc
, SSDATA (string
),
5588 SBYTES (string
), string
);
5592 /* Return the foreground process group for the tty/pty that
5593 the process P uses. */
5595 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5600 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5603 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5604 master side. Try the slave side. */
5605 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5609 ioctl (fd
, TIOCGPGRP
, &gid
);
5613 #endif /* defined (TIOCGPGRP ) */
5618 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5619 Sprocess_running_child_p
, 0, 1, 0,
5620 doc
: /* Return t if PROCESS has given the terminal to a child.
5621 If the operating system does not make it possible to find out,
5622 return t unconditionally. */)
5623 (Lisp_Object process
)
5625 /* Initialize in case ioctl doesn't exist or gives an error,
5626 in a way that will cause returning t. */
5629 struct Lisp_Process
*p
;
5631 proc
= get_process (process
);
5632 p
= XPROCESS (proc
);
5634 if (!EQ (p
->type
, Qreal
))
5635 error ("Process %s is not a subprocess",
5638 error ("Process %s is not active",
5641 gid
= emacs_get_tty_pgrp (p
);
5648 /* send a signal number SIGNO to PROCESS.
5649 If CURRENT_GROUP is t, that means send to the process group
5650 that currently owns the terminal being used to communicate with PROCESS.
5651 This is used for various commands in shell mode.
5652 If CURRENT_GROUP is lambda, that means send to the process group
5653 that currently owns the terminal, but only if it is NOT the shell itself.
5655 If NOMSG is false, insert signal-announcements into process's buffers
5658 If we can, we try to signal PROCESS by sending control characters
5659 down the pty. This allows us to signal inferiors who have changed
5660 their uid, for which kill would return an EPERM error. */
5663 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5667 struct Lisp_Process
*p
;
5671 proc
= get_process (process
);
5672 p
= XPROCESS (proc
);
5674 if (!EQ (p
->type
, Qreal
))
5675 error ("Process %s is not a subprocess",
5678 error ("Process %s is not active",
5682 current_group
= Qnil
;
5684 /* If we are using pgrps, get a pgrp number and make it negative. */
5685 if (NILP (current_group
))
5686 /* Send the signal to the shell's process group. */
5690 #ifdef SIGNALS_VIA_CHARACTERS
5691 /* If possible, send signals to the entire pgrp
5692 by sending an input character to it. */
5695 cc_t
*sig_char
= NULL
;
5697 tcgetattr (p
->infd
, &t
);
5702 sig_char
= &t
.c_cc
[VINTR
];
5706 sig_char
= &t
.c_cc
[VQUIT
];
5710 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5711 sig_char
= &t
.c_cc
[VSWTCH
];
5713 sig_char
= &t
.c_cc
[VSUSP
];
5718 if (sig_char
&& *sig_char
!= CDISABLE
)
5720 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5723 /* If we can't send the signal with a character,
5724 fall through and send it another way. */
5726 /* The code above may fall through if it can't
5727 handle the signal. */
5728 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5731 /* Get the current pgrp using the tty itself, if we have that.
5732 Otherwise, use the pty to get the pgrp.
5733 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5734 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5735 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5736 His patch indicates that if TIOCGPGRP returns an error, then
5737 we should just assume that p->pid is also the process group id. */
5739 gid
= emacs_get_tty_pgrp (p
);
5742 /* If we can't get the information, assume
5743 the shell owns the tty. */
5746 /* It is not clear whether anything really can set GID to -1.
5747 Perhaps on some system one of those ioctls can or could do so.
5748 Or perhaps this is vestigial. */
5751 #else /* ! defined (TIOCGPGRP ) */
5752 /* Can't select pgrps on this system, so we know that
5753 the child itself heads the pgrp. */
5755 #endif /* ! defined (TIOCGPGRP ) */
5757 /* If current_group is lambda, and the shell owns the terminal,
5758 don't send any signal. */
5759 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5764 if (signo
== SIGCONT
)
5766 p
->raw_status_new
= 0;
5767 pset_status (p
, Qrun
);
5768 p
->tick
= ++process_tick
;
5771 status_notify (NULL
);
5772 redisplay_preserve_echo_area (13);
5777 /* If we don't have process groups, send the signal to the immediate
5778 subprocess. That isn't really right, but it's better than any
5779 obvious alternative. */
5782 kill (p
->pid
, signo
);
5786 /* gid may be a pid, or minus a pgrp's number */
5788 if (!NILP (current_group
))
5790 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
5798 #else /* ! defined (TIOCSIGSEND) */
5800 #endif /* ! defined (TIOCSIGSEND) */
5803 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5804 doc
: /* Interrupt process PROCESS.
5805 PROCESS may be a process, a buffer, or the name of a process or buffer.
5806 No arg or nil means current buffer's process.
5807 Second arg CURRENT-GROUP non-nil means send signal to
5808 the current process-group of the process's controlling terminal
5809 rather than to the process's own process group.
5810 If the process is a shell, this means interrupt current subjob
5811 rather than the shell.
5813 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5814 don't send the signal. */)
5815 (Lisp_Object process
, Lisp_Object current_group
)
5817 process_send_signal (process
, SIGINT
, current_group
, 0);
5821 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5822 doc
: /* Kill process PROCESS. May be process or name of one.
5823 See function `interrupt-process' for more details on usage. */)
5824 (Lisp_Object process
, Lisp_Object current_group
)
5826 process_send_signal (process
, SIGKILL
, current_group
, 0);
5830 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5831 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5832 See function `interrupt-process' for more details on usage. */)
5833 (Lisp_Object process
, Lisp_Object current_group
)
5835 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5839 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5840 doc
: /* Stop process PROCESS. May be process or name of one.
5841 See function `interrupt-process' for more details on usage.
5842 If PROCESS is a network or serial process, inhibit handling of incoming
5844 (Lisp_Object process
, Lisp_Object current_group
)
5846 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5848 struct Lisp_Process
*p
;
5850 p
= XPROCESS (process
);
5851 if (NILP (p
->command
)
5854 FD_CLR (p
->infd
, &input_wait_mask
);
5855 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5857 pset_command (p
, Qt
);
5861 error ("No SIGTSTP support");
5863 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5868 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5869 doc
: /* Continue process PROCESS. May be process or name of one.
5870 See function `interrupt-process' for more details on usage.
5871 If PROCESS is a network or serial process, resume handling of incoming
5873 (Lisp_Object process
, Lisp_Object current_group
)
5875 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5877 struct Lisp_Process
*p
;
5879 p
= XPROCESS (process
);
5880 if (EQ (p
->command
, Qt
)
5882 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5884 FD_SET (p
->infd
, &input_wait_mask
);
5885 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5887 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5888 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5889 #else /* not WINDOWSNT */
5890 tcflush (p
->infd
, TCIFLUSH
);
5891 #endif /* not WINDOWSNT */
5893 pset_command (p
, Qnil
);
5897 process_send_signal (process
, SIGCONT
, current_group
, 0);
5899 error ("No SIGCONT support");
5904 /* Return the integer value of the signal whose abbreviation is ABBR,
5905 or a negative number if there is no such signal. */
5907 abbr_to_signal (char const *name
)
5910 char sigbuf
[20]; /* Large enough for all valid signal abbreviations. */
5912 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
5915 for (i
= 0; i
< sizeof sigbuf
; i
++)
5917 sigbuf
[i
] = c_toupper (name
[i
]);
5919 return str2sig (sigbuf
, &signo
) == 0 ? signo
: -1;
5925 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5926 2, 2, "sProcess (name or number): \nnSignal code: ",
5927 doc
: /* Send PROCESS the signal with code SIGCODE.
5928 PROCESS may also be a number specifying the process id of the
5929 process to signal; in this case, the process need not be a child of
5931 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5932 (Lisp_Object process
, Lisp_Object sigcode
)
5937 if (STRINGP (process
))
5939 Lisp_Object tem
= Fget_process (process
);
5942 Lisp_Object process_number
=
5943 string_to_number (SSDATA (process
), 10, 1);
5944 if (INTEGERP (process_number
) || FLOATP (process_number
))
5945 tem
= process_number
;
5949 else if (!NUMBERP (process
))
5950 process
= get_process (process
);
5955 if (NUMBERP (process
))
5956 CONS_TO_INTEGER (process
, pid_t
, pid
);
5959 CHECK_PROCESS (process
);
5960 pid
= XPROCESS (process
)->pid
;
5962 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
5965 if (INTEGERP (sigcode
))
5967 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
5968 signo
= XINT (sigcode
);
5974 CHECK_SYMBOL (sigcode
);
5975 name
= SSDATA (SYMBOL_NAME (sigcode
));
5977 signo
= abbr_to_signal (name
);
5979 error ("Undefined signal name %s", name
);
5982 return make_number (kill (pid
, signo
));
5985 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
5986 doc
: /* Make PROCESS see end-of-file in its input.
5987 EOF comes after any text already sent to it.
5988 PROCESS may be a process, a buffer, the name of a process or buffer, or
5989 nil, indicating the current buffer's process.
5990 If PROCESS is a network connection, or is a process communicating
5991 through a pipe (as opposed to a pty), then you cannot send any more
5992 text to PROCESS after you call this function.
5993 If PROCESS is a serial process, wait until all output written to the
5994 process has been transmitted to the serial port. */)
5995 (Lisp_Object process
)
5998 struct coding_system
*coding
;
6000 if (DATAGRAM_CONN_P (process
))
6003 proc
= get_process (process
);
6004 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6006 /* Make sure the process is really alive. */
6007 if (XPROCESS (proc
)->raw_status_new
)
6008 update_status (XPROCESS (proc
));
6009 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6010 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6012 if (CODING_REQUIRE_FLUSHING (coding
))
6014 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6015 send_process (proc
, "", 0, Qnil
);
6018 if (XPROCESS (proc
)->pty_flag
)
6019 send_process (proc
, "\004", 1, Qnil
);
6020 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6023 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6024 report_file_error ("Failed tcdrain", Qnil
);
6025 #endif /* not WINDOWSNT */
6026 /* Do nothing on Windows because writes are blocking. */
6030 int old_outfd
= XPROCESS (proc
)->outfd
;
6033 #ifdef HAVE_SHUTDOWN
6034 /* If this is a network connection, or socketpair is used
6035 for communication with the subprocess, call shutdown to cause EOF.
6036 (In some old system, shutdown to socketpair doesn't work.
6037 Then we just can't win.) */
6038 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6039 || XPROCESS (proc
)->infd
== old_outfd
)
6040 shutdown (old_outfd
, 1);
6042 close_process_fd (&XPROCESS (proc
)->open_fd
[WRITE_TO_SUBPROCESS
]);
6043 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6045 report_file_error ("Opening null device", Qnil
);
6046 XPROCESS (proc
)->open_fd
[WRITE_TO_SUBPROCESS
] = new_outfd
;
6047 XPROCESS (proc
)->outfd
= new_outfd
;
6049 if (!proc_encode_coding_system
[new_outfd
])
6050 proc_encode_coding_system
[new_outfd
]
6051 = xmalloc (sizeof (struct coding_system
));
6052 *proc_encode_coding_system
[new_outfd
]
6053 = *proc_encode_coding_system
[old_outfd
];
6054 memset (proc_encode_coding_system
[old_outfd
], 0,
6055 sizeof (struct coding_system
));
6060 /* The main Emacs thread records child processes in three places:
6062 - Vprocess_alist, for asynchronous subprocesses, which are child
6063 processes visible to Lisp.
6065 - deleted_pid_list, for child processes invisible to Lisp,
6066 typically because of delete-process. These are recorded so that
6067 the processes can be reaped when they exit, so that the operating
6068 system's process table is not cluttered by zombies.
6070 - the local variable PID in Fcall_process, call_process_cleanup and
6071 call_process_kill, for synchronous subprocesses.
6072 record_unwind_protect is used to make sure this process is not
6073 forgotten: if the user interrupts call-process and the child
6074 process refuses to exit immediately even with two C-g's,
6075 call_process_kill adds PID's contents to deleted_pid_list before
6078 The main Emacs thread invokes waitpid only on child processes that
6079 it creates and that have not been reaped. This avoid races on
6080 platforms such as GTK, where other threads create their own
6081 subprocesses which the main thread should not reap. For example,
6082 if the main thread attempted to reap an already-reaped child, it
6083 might inadvertently reap a GTK-created process that happened to
6084 have the same process ID. */
6086 /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing
6087 its own SIGCHLD handling. On POSIXish systems, glib needs this to
6088 keep track of its own children. GNUstep is similar. */
6090 static void dummy_handler (int sig
) {}
6091 static signal_handler_t
volatile lib_child_handler
;
6093 /* Handle a SIGCHLD signal by looking for known child processes of
6094 Emacs whose status have changed. For each one found, record its
6097 All we do is change the status; we do not run sentinels or print
6098 notifications. That is saved for the next time keyboard input is
6099 done, in order to avoid timing errors.
6101 ** WARNING: this can be called during garbage collection.
6102 Therefore, it must not be fooled by the presence of mark bits in
6105 ** USG WARNING: Although it is not obvious from the documentation
6106 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6107 signal() before executing at least one wait(), otherwise the
6108 handler will be called again, resulting in an infinite loop. The
6109 relevant portion of the documentation reads "SIGCLD signals will be
6110 queued and the signal-catching function will be continually
6111 reentered until the queue is empty". Invoking signal() causes the
6112 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6115 ** Malloc WARNING: This should never call malloc either directly or
6116 indirectly; if it does, that is a bug */
6119 handle_child_signal (int sig
)
6121 Lisp_Object tail
, proc
;
6123 /* Find the process that signaled us, and record its status. */
6125 /* The process can have been deleted by Fdelete_process, or have
6126 been started asynchronously by Fcall_process. */
6127 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6129 bool all_pids_are_fixnums
6130 = (MOST_NEGATIVE_FIXNUM
<= TYPE_MINIMUM (pid_t
)
6131 && TYPE_MAXIMUM (pid_t
) <= MOST_POSITIVE_FIXNUM
);
6132 Lisp_Object head
= XCAR (tail
);
6137 if (all_pids_are_fixnums
? INTEGERP (xpid
) : NUMBERP (xpid
))
6140 if (INTEGERP (xpid
))
6141 deleted_pid
= XINT (xpid
);
6143 deleted_pid
= XFLOAT_DATA (xpid
);
6144 if (child_status_changed (deleted_pid
, 0, 0))
6146 if (STRINGP (XCDR (head
)))
6147 unlink (SSDATA (XCDR (head
)));
6148 XSETCAR (tail
, Qnil
);
6153 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6154 FOR_EACH_PROCESS (tail
, proc
)
6156 struct Lisp_Process
*p
= XPROCESS (proc
);
6160 && child_status_changed (p
->pid
, &status
, WUNTRACED
| WCONTINUED
))
6162 /* Change the status of the process that was found. */
6163 p
->tick
= ++process_tick
;
6164 p
->raw_status
= status
;
6165 p
->raw_status_new
= 1;
6167 /* If process has terminated, stop waiting for its output. */
6168 if (WIFSIGNALED (status
) || WIFEXITED (status
))
6170 bool clear_desc_flag
= 0;
6173 clear_desc_flag
= 1;
6175 /* clear_desc_flag avoids a compiler bug in Microsoft C. */
6176 if (clear_desc_flag
)
6178 FD_CLR (p
->infd
, &input_wait_mask
);
6179 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6185 lib_child_handler (sig
);
6186 #ifdef NS_IMPL_GNUSTEP
6187 /* NSTask in GNUStep sets its child handler each time it is called.
6188 So we must re-set ours. */
6189 catch_child_signal();
6194 deliver_child_signal (int sig
)
6196 deliver_process_signal (sig
, handle_child_signal
);
6201 exec_sentinel_error_handler (Lisp_Object error_val
)
6203 cmd_error_internal (error_val
, "error in process sentinel: ");
6205 update_echo_area ();
6206 Fsleep_for (make_number (2), Qnil
);
6211 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6213 Lisp_Object sentinel
, odeactivate
;
6214 struct Lisp_Process
*p
= XPROCESS (proc
);
6215 ptrdiff_t count
= SPECPDL_INDEX ();
6216 bool outer_running_asynch_code
= running_asynch_code
;
6217 int waiting
= waiting_for_user_input_p
;
6219 if (inhibit_sentinels
)
6222 /* No need to gcpro these, because all we do with them later
6223 is test them for EQness, and none of them should be a string. */
6224 odeactivate
= Vdeactivate_mark
;
6226 Lisp_Object obuffer
, okeymap
;
6227 XSETBUFFER (obuffer
, current_buffer
);
6228 okeymap
= BVAR (current_buffer
, keymap
);
6231 /* There's no good reason to let sentinels change the current
6232 buffer, and many callers of accept-process-output, sit-for, and
6233 friends don't expect current-buffer to be changed from under them. */
6234 record_unwind_current_buffer ();
6236 sentinel
= p
->sentinel
;
6238 /* Inhibit quit so that random quits don't screw up a running filter. */
6239 specbind (Qinhibit_quit
, Qt
);
6240 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6242 /* In case we get recursively called,
6243 and we already saved the match data nonrecursively,
6244 save the same match data in safely recursive fashion. */
6245 if (outer_running_asynch_code
)
6248 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6249 restore_search_regs ();
6250 record_unwind_save_match_data ();
6251 Fset_match_data (tem
, Qt
);
6254 /* For speed, if a search happens within this code,
6255 save the match data in a special nonrecursive fashion. */
6256 running_asynch_code
= 1;
6258 internal_condition_case_1 (read_process_output_call
,
6259 list3 (sentinel
, proc
, reason
),
6260 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6261 exec_sentinel_error_handler
);
6263 /* If we saved the match data nonrecursively, restore it now. */
6264 restore_search_regs ();
6265 running_asynch_code
= outer_running_asynch_code
;
6267 Vdeactivate_mark
= odeactivate
;
6269 /* Restore waiting_for_user_input_p as it was
6270 when we were called, in case the filter clobbered it. */
6271 waiting_for_user_input_p
= waiting
;
6274 if (! EQ (Fcurrent_buffer (), obuffer
)
6275 || ! EQ (current_buffer
->keymap
, okeymap
))
6277 /* But do it only if the caller is actually going to read events.
6278 Otherwise there's no need to make him wake up, and it could
6279 cause trouble (for example it would make sit_for return). */
6280 if (waiting_for_user_input_p
== -1)
6281 record_asynch_buffer_change ();
6283 unbind_to (count
, Qnil
);
6286 /* Report all recent events of a change in process status
6287 (either run the sentinel or output a message).
6288 This is usually done while Emacs is waiting for keyboard input
6289 but can be done at other times. */
6292 status_notify (struct Lisp_Process
*deleting_process
)
6294 register Lisp_Object proc
;
6295 Lisp_Object tail
, msg
;
6296 struct gcpro gcpro1
, gcpro2
;
6300 /* We need to gcpro tail; if read_process_output calls a filter
6301 which deletes a process and removes the cons to which tail points
6302 from Vprocess_alist, and then causes a GC, tail is an unprotected
6306 /* Set this now, so that if new processes are created by sentinels
6307 that we run, we get called again to handle their status changes. */
6308 update_tick
= process_tick
;
6310 FOR_EACH_PROCESS (tail
, proc
)
6313 register struct Lisp_Process
*p
= XPROCESS (proc
);
6315 if (p
->tick
!= p
->update_tick
)
6317 p
->update_tick
= p
->tick
;
6319 /* If process is still active, read any output that remains. */
6320 while (! EQ (p
->filter
, Qt
)
6321 && ! EQ (p
->status
, Qconnect
)
6322 && ! EQ (p
->status
, Qlisten
)
6323 /* Network or serial process not stopped: */
6324 && ! EQ (p
->command
, Qt
)
6326 && p
!= deleting_process
6327 && read_process_output (proc
, p
->infd
) > 0);
6329 /* Get the text to use for the message. */
6330 if (p
->raw_status_new
)
6332 msg
= status_message (p
);
6334 /* If process is terminated, deactivate it or delete it. */
6336 if (CONSP (p
->status
))
6337 symbol
= XCAR (p
->status
);
6339 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6340 || EQ (symbol
, Qclosed
))
6342 if (delete_exited_processes
)
6343 remove_process (proc
);
6345 deactivate_process (proc
);
6348 /* The actions above may have further incremented p->tick.
6349 So set p->update_tick again so that an error in the sentinel will
6350 not cause this code to be run again. */
6351 p
->update_tick
= p
->tick
;
6352 /* Now output the message suitably. */
6353 exec_sentinel (proc
, msg
);
6357 update_mode_lines
++; /* In case buffers use %s in mode-line-format. */
6361 DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel
,
6362 Sinternal_default_process_sentinel
, 2, 2, 0,
6363 doc
: /* Function used as default sentinel for processes. */)
6364 (Lisp_Object proc
, Lisp_Object msg
)
6366 Lisp_Object buffer
, symbol
;
6367 struct Lisp_Process
*p
;
6368 CHECK_PROCESS (proc
);
6369 p
= XPROCESS (proc
);
6373 symbol
= XCAR (symbol
);
6375 if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6378 struct buffer
*old
= current_buffer
;
6379 ptrdiff_t opoint
, opoint_byte
;
6380 ptrdiff_t before
, before_byte
;
6382 /* Avoid error if buffer is deleted
6383 (probably that's why the process is dead, too). */
6384 if (!BUFFER_LIVE_P (XBUFFER (buffer
)))
6386 Fset_buffer (buffer
);
6388 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
6389 msg
= (code_convert_string_norecord
6390 (msg
, Vlocale_coding_system
, 1));
6393 opoint_byte
= PT_BYTE
;
6394 /* Insert new output into buffer
6395 at the current end-of-output marker,
6396 thus preserving logical ordering of input and output. */
6397 if (XMARKER (p
->mark
)->buffer
)
6398 Fgoto_char (p
->mark
);
6400 SET_PT_BOTH (ZV
, ZV_BYTE
);
6403 before_byte
= PT_BYTE
;
6405 tem
= BVAR (current_buffer
, read_only
);
6406 bset_read_only (current_buffer
, Qnil
);
6407 insert_string ("\nProcess ");
6408 { /* FIXME: temporary kludge. */
6409 Lisp_Object tem2
= p
->name
; Finsert (1, &tem2
); }
6410 insert_string (" ");
6412 bset_read_only (current_buffer
, tem
);
6413 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6415 if (opoint
>= before
)
6416 SET_PT_BOTH (opoint
+ (PT
- before
),
6417 opoint_byte
+ (PT_BYTE
- before_byte
));
6419 SET_PT_BOTH (opoint
, opoint_byte
);
6421 set_buffer_internal (old
);
6427 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6428 Sset_process_coding_system
, 1, 3, 0,
6429 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6430 DECODING will be used to decode subprocess output and ENCODING to
6431 encode subprocess input. */)
6432 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6434 register struct Lisp_Process
*p
;
6436 CHECK_PROCESS (process
);
6437 p
= XPROCESS (process
);
6439 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6441 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6442 Fcheck_coding_system (decoding
);
6443 Fcheck_coding_system (encoding
);
6444 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6445 pset_decode_coding_system (p
, decoding
);
6446 pset_encode_coding_system (p
, encoding
);
6447 setup_process_coding_systems (process
);
6452 DEFUN ("process-coding-system",
6453 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6454 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6455 (register Lisp_Object process
)
6457 CHECK_PROCESS (process
);
6458 return Fcons (XPROCESS (process
)->decode_coding_system
,
6459 XPROCESS (process
)->encode_coding_system
);
6462 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6463 Sset_process_filter_multibyte
, 2, 2, 0,
6464 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6465 If FLAG is non-nil, the filter is given multibyte strings.
6466 If FLAG is nil, the filter is given unibyte strings. In this case,
6467 all character code conversion except for end-of-line conversion is
6469 (Lisp_Object process
, Lisp_Object flag
)
6471 register struct Lisp_Process
*p
;
6473 CHECK_PROCESS (process
);
6474 p
= XPROCESS (process
);
6476 pset_decode_coding_system
6477 (p
, raw_text_coding_system (p
->decode_coding_system
));
6478 setup_process_coding_systems (process
);
6483 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6484 Sprocess_filter_multibyte_p
, 1, 1, 0,
6485 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6486 (Lisp_Object process
)
6488 register struct Lisp_Process
*p
;
6489 struct coding_system
*coding
;
6491 CHECK_PROCESS (process
);
6492 p
= XPROCESS (process
);
6493 coding
= proc_decode_coding_system
[p
->infd
];
6494 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6503 add_gpm_wait_descriptor (int desc
)
6505 add_keyboard_wait_descriptor (desc
);
6509 delete_gpm_wait_descriptor (int desc
)
6511 delete_keyboard_wait_descriptor (desc
);
6516 # ifdef USABLE_SIGIO
6518 /* Return true if *MASK has a bit set
6519 that corresponds to one of the keyboard input descriptors. */
6522 keyboard_bit_set (fd_set
*mask
)
6526 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6527 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6528 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6535 #else /* not subprocesses */
6537 /* Defined on msdos.c. */
6538 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
6539 struct timespec
*, void *);
6541 /* Implementation of wait_reading_process_output, assuming that there
6542 are no subprocesses. Used only by the MS-DOS build.
6544 Wait for timeout to elapse and/or keyboard input to be available.
6548 If negative, gobble data immediately available but don't wait for any.
6551 an additional duration to wait, measured in nanoseconds
6552 If TIME_LIMIT is zero, then:
6553 If NSECS == 0, there is no limit.
6554 If NSECS > 0, the timeout consists of NSECS only.
6555 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
6558 0 to ignore keyboard input, or
6559 1 to return when input is available, or
6560 -1 means caller will actually read the input, so don't throw to
6563 see full version for other parameters. We know that wait_proc will
6564 always be NULL, since `subprocesses' isn't defined.
6566 DO_DISPLAY means redisplay should be done to show subprocess
6567 output that arrives.
6569 Return true if we received input from any process. */
6572 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
6574 Lisp_Object wait_for_cell
,
6575 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6578 struct timespec end_time
, timeout
;
6585 else if (TYPE_MAXIMUM (time_t) < time_limit
)
6586 time_limit
= TYPE_MAXIMUM (time_t);
6588 /* What does time_limit really mean? */
6589 if (time_limit
|| nsecs
> 0)
6591 timeout
= make_timespec (time_limit
, nsecs
);
6592 end_time
= timespec_add (current_timespec (), timeout
);
6595 /* Turn off periodic alarms (in case they are in use)
6596 and then turn off any other atimers,
6597 because the select emulator uses alarms. */
6599 turn_on_atimers (0);
6603 bool timeout_reduced_for_timers
= 0;
6604 fd_set waitchannels
;
6607 /* If calling from keyboard input, do not quit
6608 since we want to return C-g as an input character.
6609 Otherwise, do pending quit if requested. */
6613 /* Exit now if the cell we're waiting for became non-nil. */
6614 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6617 /* Compute time from now till when time limit is up. */
6618 /* Exit if already run out. */
6621 /* A negative timeout means
6622 gobble output available now
6623 but don't wait at all. */
6625 timeout
= make_timespec (0, 0);
6627 else if (time_limit
|| nsecs
> 0)
6629 struct timespec now
= current_timespec ();
6630 if (timespec_cmp (end_time
, now
) <= 0)
6632 timeout
= timespec_sub (end_time
, now
);
6636 timeout
= make_timespec (100000, 0);
6639 /* If our caller will not immediately handle keyboard events,
6640 run timer events directly.
6641 (Callers that will immediately read keyboard events
6642 call timer_delay on their own.) */
6643 if (NILP (wait_for_cell
))
6645 struct timespec timer_delay
;
6649 unsigned old_timers_run
= timers_run
;
6650 timer_delay
= timer_check ();
6651 if (timers_run
!= old_timers_run
&& do_display
)
6652 /* We must retry, since a timer may have requeued itself
6653 and that could alter the time delay. */
6654 redisplay_preserve_echo_area (14);
6658 while (!detect_input_pending ());
6660 /* If there is unread keyboard input, also return. */
6662 && requeued_events_pending_p ())
6665 if (timespec_valid_p (timer_delay
) && nsecs
>= 0)
6667 if (timespec_cmp (timer_delay
, timeout
) < 0)
6669 timeout
= timer_delay
;
6670 timeout_reduced_for_timers
= 1;
6675 /* Cause C-g and alarm signals to take immediate action,
6676 and cause input available signals to zero out timeout. */
6678 set_waiting_for_input (&timeout
);
6680 /* If a frame has been newly mapped and needs updating,
6681 reprocess its display stuff. */
6682 if (frame_garbaged
&& do_display
)
6684 clear_waiting_for_input ();
6685 redisplay_preserve_echo_area (15);
6687 set_waiting_for_input (&timeout
);
6690 /* Wait till there is something to do. */
6691 FD_ZERO (&waitchannels
);
6692 if (read_kbd
&& detect_input_pending ())
6696 if (read_kbd
|| !NILP (wait_for_cell
))
6697 FD_SET (0, &waitchannels
);
6698 nfds
= pselect (1, &waitchannels
, NULL
, NULL
, &timeout
, NULL
);
6703 /* Make C-g and alarm signals set flags again */
6704 clear_waiting_for_input ();
6706 /* If we woke up due to SIGWINCH, actually change size now. */
6707 do_pending_window_change (0);
6709 if ((time_limit
|| nsecs
) && nfds
== 0 && ! timeout_reduced_for_timers
)
6710 /* We waited the full specified time, so return now. */
6715 /* If the system call was interrupted, then go around the
6717 if (xerrno
== EINTR
)
6718 FD_ZERO (&waitchannels
);
6720 report_file_errno ("Failed select", Qnil
, xerrno
);
6723 /* Check for keyboard input */
6726 && detect_input_pending_run_timers (do_display
))
6728 swallow_events (do_display
);
6729 if (detect_input_pending_run_timers (do_display
))
6733 /* If there is unread keyboard input, also return. */
6735 && requeued_events_pending_p ())
6738 /* If wait_for_cell. check for keyboard input
6739 but don't run any timers.
6740 ??? (It seems wrong to me to check for keyboard
6741 input at all when wait_for_cell, but the code
6742 has been this way since July 1994.
6743 Try changing this after version 19.31.) */
6744 if (! NILP (wait_for_cell
)
6745 && detect_input_pending ())
6747 swallow_events (do_display
);
6748 if (detect_input_pending ())
6752 /* Exit now if the cell we're waiting for became non-nil. */
6753 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6762 #endif /* not subprocesses */
6764 /* The following functions are needed even if async subprocesses are
6765 not supported. Some of them are no-op stubs in that case. */
6767 /* Add DESC to the set of keyboard input descriptors. */
6770 add_keyboard_wait_descriptor (int desc
)
6772 #ifdef subprocesses /* actually means "not MSDOS" */
6773 FD_SET (desc
, &input_wait_mask
);
6774 FD_SET (desc
, &non_process_wait_mask
);
6775 if (desc
> max_input_desc
)
6776 max_input_desc
= desc
;
6780 /* From now on, do not expect DESC to give keyboard input. */
6783 delete_keyboard_wait_descriptor (int desc
)
6786 FD_CLR (desc
, &input_wait_mask
);
6787 FD_CLR (desc
, &non_process_wait_mask
);
6788 delete_input_desc (desc
);
6792 /* Setup coding systems of PROCESS. */
6795 setup_process_coding_systems (Lisp_Object process
)
6798 struct Lisp_Process
*p
= XPROCESS (process
);
6800 int outch
= p
->outfd
;
6801 Lisp_Object coding_system
;
6803 if (inch
< 0 || outch
< 0)
6806 if (!proc_decode_coding_system
[inch
])
6807 proc_decode_coding_system
[inch
] = xmalloc (sizeof (struct coding_system
));
6808 coding_system
= p
->decode_coding_system
;
6809 if (EQ (p
->filter
, Qinternal_default_process_filter
)
6810 && BUFFERP (p
->buffer
))
6812 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6813 coding_system
= raw_text_coding_system (coding_system
);
6815 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
6817 if (!proc_encode_coding_system
[outch
])
6818 proc_encode_coding_system
[outch
] = xmalloc (sizeof (struct coding_system
));
6819 setup_coding_system (p
->encode_coding_system
,
6820 proc_encode_coding_system
[outch
]);
6824 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
6825 doc
: /* Return the (or a) process associated with BUFFER.
6826 BUFFER may be a buffer or the name of one. */)
6827 (register Lisp_Object buffer
)
6830 register Lisp_Object buf
, tail
, proc
;
6832 if (NILP (buffer
)) return Qnil
;
6833 buf
= Fget_buffer (buffer
);
6834 if (NILP (buf
)) return Qnil
;
6836 FOR_EACH_PROCESS (tail
, proc
)
6837 if (EQ (XPROCESS (proc
)->buffer
, buf
))
6839 #endif /* subprocesses */
6843 DEFUN ("process-inherit-coding-system-flag",
6844 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
6846 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
6847 If this flag is t, `buffer-file-coding-system' of the buffer
6848 associated with PROCESS will inherit the coding system used to decode
6849 the process output. */)
6850 (register Lisp_Object process
)
6853 CHECK_PROCESS (process
);
6854 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
6856 /* Ignore the argument and return the value of
6857 inherit-process-coding-system. */
6858 return inherit_process_coding_system
? Qt
: Qnil
;
6862 /* Kill all processes associated with `buffer'.
6863 If `buffer' is nil, kill all processes */
6866 kill_buffer_processes (Lisp_Object buffer
)
6869 Lisp_Object tail
, proc
;
6871 FOR_EACH_PROCESS (tail
, proc
)
6872 if (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
))
6874 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6875 Fdelete_process (proc
);
6876 else if (XPROCESS (proc
)->infd
>= 0)
6877 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6879 #else /* subprocesses */
6880 /* Since we have no subprocesses, this does nothing. */
6881 #endif /* subprocesses */
6884 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
6885 Swaiting_for_user_input_p
, 0, 0, 0,
6886 doc
: /* Return non-nil if Emacs is waiting for input from the user.
6887 This is intended for use by asynchronous process output filters and sentinels. */)
6891 return (waiting_for_user_input_p
? Qt
: Qnil
);
6897 /* Stop reading input from keyboard sources. */
6900 hold_keyboard_input (void)
6905 /* Resume reading input from keyboard sources. */
6908 unhold_keyboard_input (void)
6913 /* Return true if keyboard input is on hold, zero otherwise. */
6916 kbd_on_hold_p (void)
6918 return kbd_is_on_hold
;
6922 /* Enumeration of and access to system processes a-la ps(1). */
6924 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
6926 doc
: /* Return a list of numerical process IDs of all running processes.
6927 If this functionality is unsupported, return nil.
6929 See `process-attributes' for getting attributes of a process given its ID. */)
6932 return list_system_processes ();
6935 DEFUN ("process-attributes", Fprocess_attributes
,
6936 Sprocess_attributes
, 1, 1, 0,
6937 doc
: /* Return attributes of the process given by its PID, a number.
6939 Value is an alist where each element is a cons cell of the form
6943 If this functionality is unsupported, the value is nil.
6945 See `list-system-processes' for getting a list of all process IDs.
6947 The KEYs of the attributes that this function may return are listed
6948 below, together with the type of the associated VALUE (in parentheses).
6949 Not all platforms support all of these attributes; unsupported
6950 attributes will not appear in the returned alist.
6951 Unless explicitly indicated otherwise, numbers can have either
6952 integer or floating point values.
6954 euid -- Effective user User ID of the process (number)
6955 user -- User name corresponding to euid (string)
6956 egid -- Effective user Group ID of the process (number)
6957 group -- Group name corresponding to egid (string)
6958 comm -- Command name (executable name only) (string)
6959 state -- Process state code, such as "S", "R", or "T" (string)
6960 ppid -- Parent process ID (number)
6961 pgrp -- Process group ID (number)
6962 sess -- Session ID, i.e. process ID of session leader (number)
6963 ttname -- Controlling tty name (string)
6964 tpgid -- ID of foreground process group on the process's tty (number)
6965 minflt -- number of minor page faults (number)
6966 majflt -- number of major page faults (number)
6967 cminflt -- cumulative number of minor page faults (number)
6968 cmajflt -- cumulative number of major page faults (number)
6969 utime -- user time used by the process, in (current-time) format,
6970 which is a list of integers (HIGH LOW USEC PSEC)
6971 stime -- system time used by the process (current-time)
6972 time -- sum of utime and stime (current-time)
6973 cutime -- user time used by the process and its children (current-time)
6974 cstime -- system time used by the process and its children (current-time)
6975 ctime -- sum of cutime and cstime (current-time)
6976 pri -- priority of the process (number)
6977 nice -- nice value of the process (number)
6978 thcount -- process thread count (number)
6979 start -- time the process started (current-time)
6980 vsize -- virtual memory size of the process in KB's (number)
6981 rss -- resident set size of the process in KB's (number)
6982 etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format
6983 pcpu -- percents of CPU time used by the process (floating-point number)
6984 pmem -- percents of total physical memory used by process's resident set
6985 (floating-point number)
6986 args -- command line which invoked the process (string). */)
6989 return system_process_attributes (pid
);
6992 /* Arrange to catch SIGCHLD if this hasn't already been arranged.
6993 Invoke this after init_process_emacs, and after glib and/or GNUstep
6994 futz with the SIGCHLD handler, but before Emacs forks any children.
6995 This function's caller should block SIGCHLD. */
6997 #ifndef NS_IMPL_GNUSTEP
7001 catch_child_signal (void)
7003 struct sigaction action
, old_action
;
7004 emacs_sigaction_init (&action
, deliver_child_signal
);
7005 block_child_signal ();
7006 sigaction (SIGCHLD
, &action
, &old_action
);
7007 eassert (! (old_action
.sa_flags
& SA_SIGINFO
));
7009 if (old_action
.sa_handler
!= deliver_child_signal
)
7011 = (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7013 : old_action
.sa_handler
);
7014 unblock_child_signal ();
7018 /* This is not called "init_process" because that is the name of a
7019 Mach system call, so it would cause problems on Darwin systems. */
7021 init_process_emacs (void)
7026 inhibit_sentinels
= 0;
7029 if (! noninteractive
|| initialized
)
7032 #if defined HAVE_GLIB && !defined WINDOWSNT
7033 /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
7034 this should always fail, but is enough to initialize glib's
7035 private SIGCHLD handler, allowing catch_child_signal to copy
7036 it into lib_child_handler. */
7037 g_source_unref (g_child_watch_source_new (getpid ()));
7039 catch_child_signal ();
7042 FD_ZERO (&input_wait_mask
);
7043 FD_ZERO (&non_keyboard_wait_mask
);
7044 FD_ZERO (&non_process_wait_mask
);
7045 FD_ZERO (&write_mask
);
7046 max_process_desc
= max_input_desc
= -1;
7047 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7049 #ifdef NON_BLOCKING_CONNECT
7050 FD_ZERO (&connect_wait_mask
);
7051 num_pending_connects
= 0;
7054 #ifdef ADAPTIVE_READ_BUFFERING
7055 process_output_delay_count
= 0;
7056 process_output_skip
= 0;
7059 /* Don't do this, it caused infinite select loops. The display
7060 method should call add_keyboard_wait_descriptor on stdin if it
7063 FD_SET (0, &input_wait_mask
);
7066 Vprocess_alist
= Qnil
;
7067 deleted_pid_list
= Qnil
;
7068 for (i
= 0; i
< FD_SETSIZE
; i
++)
7070 chan_process
[i
] = Qnil
;
7071 proc_buffered_char
[i
] = -1;
7073 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7074 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7075 #ifdef DATAGRAM_SOCKETS
7076 memset (datagram_address
, 0, sizeof datagram_address
);
7080 Lisp_Object subfeatures
= Qnil
;
7081 const struct socket_options
*sopt
;
7083 #define ADD_SUBFEATURE(key, val) \
7084 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7086 #ifdef NON_BLOCKING_CONNECT
7087 ADD_SUBFEATURE (QCnowait
, Qt
);
7089 #ifdef DATAGRAM_SOCKETS
7090 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7092 #ifdef HAVE_SEQPACKET
7093 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7095 #ifdef HAVE_LOCAL_SOCKETS
7096 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7098 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7100 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7102 #ifdef HAVE_GETSOCKNAME
7103 ADD_SUBFEATURE (QCservice
, Qt
);
7105 ADD_SUBFEATURE (QCserver
, Qt
);
7107 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7108 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7110 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7113 #if defined (DARWIN_OS)
7114 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7115 processes. As such, we only change the default value. */
7118 char const *release
= (STRINGP (Voperating_system_release
)
7119 ? SSDATA (Voperating_system_release
)
7121 if (!release
|| !release
[0] || (release
[0] < '7' && release
[1] == '.')) {
7122 Vprocess_connection_type
= Qnil
;
7126 #endif /* subprocesses */
7131 syms_of_process (void)
7135 DEFSYM (Qprocessp
, "processp");
7136 DEFSYM (Qrun
, "run");
7137 DEFSYM (Qstop
, "stop");
7138 DEFSYM (Qsignal
, "signal");
7140 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7143 Qexit = intern_c_string ("exit");
7144 staticpro (&Qexit); */
7146 DEFSYM (Qopen
, "open");
7147 DEFSYM (Qclosed
, "closed");
7148 DEFSYM (Qconnect
, "connect");
7149 DEFSYM (Qfailed
, "failed");
7150 DEFSYM (Qlisten
, "listen");
7151 DEFSYM (Qlocal
, "local");
7152 DEFSYM (Qipv4
, "ipv4");
7154 DEFSYM (Qipv6
, "ipv6");
7156 DEFSYM (Qdatagram
, "datagram");
7157 DEFSYM (Qseqpacket
, "seqpacket");
7159 DEFSYM (QCport
, ":port");
7160 DEFSYM (QCspeed
, ":speed");
7161 DEFSYM (QCprocess
, ":process");
7163 DEFSYM (QCbytesize
, ":bytesize");
7164 DEFSYM (QCstopbits
, ":stopbits");
7165 DEFSYM (QCparity
, ":parity");
7166 DEFSYM (Qodd
, "odd");
7167 DEFSYM (Qeven
, "even");
7168 DEFSYM (QCflowcontrol
, ":flowcontrol");
7171 DEFSYM (QCsummary
, ":summary");
7173 DEFSYM (Qreal
, "real");
7174 DEFSYM (Qnetwork
, "network");
7175 DEFSYM (Qserial
, "serial");
7176 DEFSYM (QCbuffer
, ":buffer");
7177 DEFSYM (QChost
, ":host");
7178 DEFSYM (QCservice
, ":service");
7179 DEFSYM (QClocal
, ":local");
7180 DEFSYM (QCremote
, ":remote");
7181 DEFSYM (QCcoding
, ":coding");
7182 DEFSYM (QCserver
, ":server");
7183 DEFSYM (QCnowait
, ":nowait");
7184 DEFSYM (QCsentinel
, ":sentinel");
7185 DEFSYM (QClog
, ":log");
7186 DEFSYM (QCnoquery
, ":noquery");
7187 DEFSYM (QCstop
, ":stop");
7188 DEFSYM (QCoptions
, ":options");
7189 DEFSYM (QCplist
, ":plist");
7191 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7193 staticpro (&Vprocess_alist
);
7194 staticpro (&deleted_pid_list
);
7196 #endif /* subprocesses */
7198 DEFSYM (QCname
, ":name");
7199 DEFSYM (QCtype
, ":type");
7201 DEFSYM (Qeuid
, "euid");
7202 DEFSYM (Qegid
, "egid");
7203 DEFSYM (Quser
, "user");
7204 DEFSYM (Qgroup
, "group");
7205 DEFSYM (Qcomm
, "comm");
7206 DEFSYM (Qstate
, "state");
7207 DEFSYM (Qppid
, "ppid");
7208 DEFSYM (Qpgrp
, "pgrp");
7209 DEFSYM (Qsess
, "sess");
7210 DEFSYM (Qttname
, "ttname");
7211 DEFSYM (Qtpgid
, "tpgid");
7212 DEFSYM (Qminflt
, "minflt");
7213 DEFSYM (Qmajflt
, "majflt");
7214 DEFSYM (Qcminflt
, "cminflt");
7215 DEFSYM (Qcmajflt
, "cmajflt");
7216 DEFSYM (Qutime
, "utime");
7217 DEFSYM (Qstime
, "stime");
7218 DEFSYM (Qtime
, "time");
7219 DEFSYM (Qcutime
, "cutime");
7220 DEFSYM (Qcstime
, "cstime");
7221 DEFSYM (Qctime
, "ctime");
7222 DEFSYM (Qinternal_default_process_sentinel
,
7223 "internal-default-process-sentinel");
7224 DEFSYM (Qinternal_default_process_filter
,
7225 "internal-default-process-filter");
7226 DEFSYM (Qpri
, "pri");
7227 DEFSYM (Qnice
, "nice");
7228 DEFSYM (Qthcount
, "thcount");
7229 DEFSYM (Qstart
, "start");
7230 DEFSYM (Qvsize
, "vsize");
7231 DEFSYM (Qrss
, "rss");
7232 DEFSYM (Qetime
, "etime");
7233 DEFSYM (Qpcpu
, "pcpu");
7234 DEFSYM (Qpmem
, "pmem");
7235 DEFSYM (Qargs
, "args");
7237 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7238 doc
: /* Non-nil means delete processes immediately when they exit.
7239 A value of nil means don't delete them until `list-processes' is run. */);
7241 delete_exited_processes
= 1;
7244 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7245 doc
: /* Control type of device used to communicate with subprocesses.
7246 Values are nil to use a pipe, or t or `pty' to use a pty.
7247 The value has no effect if the system has no ptys or if all ptys are busy:
7248 then a pipe is used in any case.
7249 The value takes effect when `start-process' is called. */);
7250 Vprocess_connection_type
= Qt
;
7252 #ifdef ADAPTIVE_READ_BUFFERING
7253 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7254 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7255 On some systems, when Emacs reads the output from a subprocess, the output data
7256 is read in very small blocks, potentially resulting in very poor performance.
7257 This behavior can be remedied to some extent by setting this variable to a
7258 non-nil value, as it will automatically delay reading from such processes, to
7259 allow them to produce more output before Emacs tries to read it.
7260 If the value is t, the delay is reset after each write to the process; any other
7261 non-nil value means that the delay is not reset on write.
7262 The variable takes effect when `start-process' is called. */);
7263 Vprocess_adaptive_read_buffering
= Qt
;
7266 defsubr (&Sprocessp
);
7267 defsubr (&Sget_process
);
7268 defsubr (&Sdelete_process
);
7269 defsubr (&Sprocess_status
);
7270 defsubr (&Sprocess_exit_status
);
7271 defsubr (&Sprocess_id
);
7272 defsubr (&Sprocess_name
);
7273 defsubr (&Sprocess_tty_name
);
7274 defsubr (&Sprocess_command
);
7275 defsubr (&Sset_process_buffer
);
7276 defsubr (&Sprocess_buffer
);
7277 defsubr (&Sprocess_mark
);
7278 defsubr (&Sset_process_filter
);
7279 defsubr (&Sprocess_filter
);
7280 defsubr (&Sset_process_sentinel
);
7281 defsubr (&Sprocess_sentinel
);
7282 defsubr (&Sset_process_window_size
);
7283 defsubr (&Sset_process_inherit_coding_system_flag
);
7284 defsubr (&Sset_process_query_on_exit_flag
);
7285 defsubr (&Sprocess_query_on_exit_flag
);
7286 defsubr (&Sprocess_contact
);
7287 defsubr (&Sprocess_plist
);
7288 defsubr (&Sset_process_plist
);
7289 defsubr (&Sprocess_list
);
7290 defsubr (&Sstart_process
);
7291 defsubr (&Sserial_process_configure
);
7292 defsubr (&Smake_serial_process
);
7293 defsubr (&Sset_network_process_option
);
7294 defsubr (&Smake_network_process
);
7295 defsubr (&Sformat_network_address
);
7296 #if defined (HAVE_NET_IF_H)
7298 defsubr (&Snetwork_interface_list
);
7300 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
7301 defsubr (&Snetwork_interface_info
);
7303 #endif /* defined (HAVE_NET_IF_H) */
7304 #ifdef DATAGRAM_SOCKETS
7305 defsubr (&Sprocess_datagram_address
);
7306 defsubr (&Sset_process_datagram_address
);
7308 defsubr (&Saccept_process_output
);
7309 defsubr (&Sprocess_send_region
);
7310 defsubr (&Sprocess_send_string
);
7311 defsubr (&Sinterrupt_process
);
7312 defsubr (&Skill_process
);
7313 defsubr (&Squit_process
);
7314 defsubr (&Sstop_process
);
7315 defsubr (&Scontinue_process
);
7316 defsubr (&Sprocess_running_child_p
);
7317 defsubr (&Sprocess_send_eof
);
7318 defsubr (&Ssignal_process
);
7319 defsubr (&Swaiting_for_user_input_p
);
7320 defsubr (&Sprocess_type
);
7321 defsubr (&Sinternal_default_process_sentinel
);
7322 defsubr (&Sinternal_default_process_filter
);
7323 defsubr (&Sset_process_coding_system
);
7324 defsubr (&Sprocess_coding_system
);
7325 defsubr (&Sset_process_filter_multibyte
);
7326 defsubr (&Sprocess_filter_multibyte_p
);
7328 #endif /* subprocesses */
7330 defsubr (&Sget_buffer_process
);
7331 defsubr (&Sprocess_inherit_coding_system_flag
);
7332 defsubr (&Slist_system_processes
);
7333 defsubr (&Sprocess_attributes
);