1 /* Asynchronous subprocess control for GNU Emacs.
3 Copyright (C) 1985-1988, 1993-1996, 1998-1999, 2001-2014
4 Free Software Foundation, Inc.
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 *);
137 /* Work around GCC 4.7.0 bug with strict overflow checking; see
138 <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52904>.
139 These lines can be removed once the GCC bug is fixed. */
140 #if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
141 # pragma GCC diagnostic ignored "-Wstrict-overflow"
144 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
145 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
146 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
147 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
148 Lisp_Object QCname
, QCtype
;
150 /* True if keyboard input is on hold, zero otherwise. */
152 static bool kbd_is_on_hold
;
154 /* Nonzero means don't run process sentinels. This is used
156 bool inhibit_sentinels
;
161 # define SOCK_CLOEXEC 0
166 /* Emulate GNU/Linux accept4 and socket well enough for this module. */
169 close_on_exec (int fd
)
172 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
177 accept4 (int sockfd
, struct sockaddr
*addr
, socklen_t
*addrlen
, int flags
)
179 return close_on_exec (accept (sockfd
, addr
, addrlen
));
183 process_socket (int domain
, int type
, int protocol
)
185 return close_on_exec (socket (domain
, type
, protocol
));
188 # define socket(domain, type, protocol) process_socket (domain, type, protocol)
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 enum { SELECT_CAN_DO_WRITE_MASK
= false };
229 enum { SELECT_CAN_DO_WRITE_MASK
= true };
230 #ifndef NON_BLOCKING_CONNECT
232 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
233 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
234 #define NON_BLOCKING_CONNECT
235 #endif /* EWOULDBLOCK || EINPROGRESS */
236 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
237 #endif /* HAVE_SELECT */
238 #endif /* NON_BLOCKING_CONNECT */
239 #endif /* BROKEN_NON_BLOCKING_CONNECT */
241 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
242 this system. We need to read full packets, so we need a
243 "non-destructive" select. So we require either native select,
244 or emulation of select using FIONREAD. */
246 #ifndef BROKEN_DATAGRAM_SOCKETS
247 # if defined HAVE_SELECT || defined USABLE_FIONREAD
248 # if defined HAVE_SENDTO && defined HAVE_RECVFROM && defined EMSGSIZE
249 # define DATAGRAM_SOCKETS
254 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
255 # define HAVE_SEQPACKET
258 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
259 #define ADAPTIVE_READ_BUFFERING
262 #ifdef ADAPTIVE_READ_BUFFERING
263 #define READ_OUTPUT_DELAY_INCREMENT (TIMESPEC_RESOLUTION / 100)
264 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
265 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
267 /* Number of processes which have a non-zero read_output_delay,
268 and therefore might be delayed for adaptive read buffering. */
270 static int process_output_delay_count
;
272 /* True if any process has non-nil read_output_skip. */
274 static bool process_output_skip
;
277 #define process_output_delay_count 0
280 static void create_process (Lisp_Object
, char **, Lisp_Object
);
282 static bool keyboard_bit_set (fd_set
*);
284 static void deactivate_process (Lisp_Object
);
285 static int status_notify (struct Lisp_Process
*, struct Lisp_Process
*);
286 static int read_process_output (Lisp_Object
, int);
287 static void handle_child_signal (int);
288 static void create_pty (Lisp_Object
);
290 static Lisp_Object
get_process (register Lisp_Object name
);
291 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
293 /* Mask of bits indicating the descriptors that we wait for input on. */
295 static fd_set input_wait_mask
;
297 /* Mask that excludes keyboard input descriptor(s). */
299 static fd_set non_keyboard_wait_mask
;
301 /* Mask that excludes process input descriptor(s). */
303 static fd_set non_process_wait_mask
;
305 /* Mask for selecting for write. */
307 static fd_set write_mask
;
309 #ifdef NON_BLOCKING_CONNECT
310 /* Mask of bits indicating the descriptors that we wait for connect to
311 complete on. Once they complete, they are removed from this mask
312 and added to the input_wait_mask and non_keyboard_wait_mask. */
314 static fd_set connect_wait_mask
;
316 /* Number of bits set in connect_wait_mask. */
317 static int num_pending_connects
;
318 #endif /* NON_BLOCKING_CONNECT */
320 /* The largest descriptor currently in use for a process object; -1 if none. */
321 static int max_process_desc
;
323 /* The largest descriptor currently in use for input; -1 if none. */
324 static int max_input_desc
;
326 /* Indexed by descriptor, gives the process (if any) for that descriptor */
327 static Lisp_Object chan_process
[FD_SETSIZE
];
329 /* Alist of elements (NAME . PROCESS) */
330 static Lisp_Object Vprocess_alist
;
332 /* Buffered-ahead input char from process, indexed by channel.
333 -1 means empty (no char is buffered).
334 Used on sys V where the only way to tell if there is any
335 output from the process is to read at least one char.
336 Always -1 on systems that support FIONREAD. */
338 static int proc_buffered_char
[FD_SETSIZE
];
340 /* Table of `struct coding-system' for each process. */
341 static struct coding_system
*proc_decode_coding_system
[FD_SETSIZE
];
342 static struct coding_system
*proc_encode_coding_system
[FD_SETSIZE
];
344 #ifdef DATAGRAM_SOCKETS
345 /* Table of `partner address' for datagram sockets. */
346 static struct sockaddr_and_len
{
349 } datagram_address
[FD_SETSIZE
];
350 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
351 #define DATAGRAM_CONN_P(proc) \
352 (PROCESSP (proc) && \
353 XPROCESS (proc)->infd >= 0 && \
354 datagram_address[XPROCESS (proc)->infd].sa != 0)
356 #define DATAGRAM_CHAN_P(chan) (0)
357 #define DATAGRAM_CONN_P(proc) (0)
360 /* FOR_EACH_PROCESS (LIST_VAR, PROC_VAR) followed by a statement is
361 a `for' loop which iterates over processes from Vprocess_alist. */
363 #define FOR_EACH_PROCESS(list_var, proc_var) \
364 FOR_EACH_ALIST_VALUE (Vprocess_alist, list_var, proc_var)
366 /* These setters are used only in this file, so they can be private. */
368 pset_buffer (struct Lisp_Process
*p
, Lisp_Object val
)
373 pset_command (struct Lisp_Process
*p
, Lisp_Object val
)
378 pset_decode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
380 p
->decode_coding_system
= val
;
383 pset_decoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
385 p
->decoding_buf
= val
;
388 pset_encode_coding_system (struct Lisp_Process
*p
, Lisp_Object val
)
390 p
->encode_coding_system
= val
;
393 pset_encoding_buf (struct Lisp_Process
*p
, Lisp_Object val
)
395 p
->encoding_buf
= val
;
398 pset_filter (struct Lisp_Process
*p
, Lisp_Object val
)
400 p
->filter
= NILP (val
) ? Qinternal_default_process_filter
: val
;
403 pset_log (struct Lisp_Process
*p
, Lisp_Object val
)
408 pset_mark (struct Lisp_Process
*p
, Lisp_Object val
)
413 pset_name (struct Lisp_Process
*p
, Lisp_Object val
)
418 pset_plist (struct Lisp_Process
*p
, Lisp_Object val
)
423 pset_sentinel (struct Lisp_Process
*p
, Lisp_Object val
)
425 p
->sentinel
= NILP (val
) ? Qinternal_default_process_sentinel
: val
;
428 pset_status (struct Lisp_Process
*p
, Lisp_Object val
)
433 pset_tty_name (struct Lisp_Process
*p
, Lisp_Object val
)
438 pset_type (struct Lisp_Process
*p
, Lisp_Object val
)
443 pset_write_queue (struct Lisp_Process
*p
, Lisp_Object val
)
445 p
->write_queue
= val
;
450 static struct fd_callback_data
456 int condition
; /* mask of the defines above. */
457 } fd_callback_info
[FD_SETSIZE
];
460 /* Add a file descriptor FD to be monitored for when read is possible.
461 When read is possible, call FUNC with argument DATA. */
464 add_read_fd (int fd
, fd_callback func
, void *data
)
466 add_keyboard_wait_descriptor (fd
);
468 fd_callback_info
[fd
].func
= func
;
469 fd_callback_info
[fd
].data
= data
;
470 fd_callback_info
[fd
].condition
|= FOR_READ
;
473 /* Stop monitoring file descriptor FD for when read is possible. */
476 delete_read_fd (int fd
)
478 delete_keyboard_wait_descriptor (fd
);
480 fd_callback_info
[fd
].condition
&= ~FOR_READ
;
481 if (fd_callback_info
[fd
].condition
== 0)
483 fd_callback_info
[fd
].func
= 0;
484 fd_callback_info
[fd
].data
= 0;
488 /* Add a file descriptor FD to be monitored for when write is possible.
489 When write is possible, call FUNC with argument DATA. */
492 add_write_fd (int fd
, fd_callback func
, void *data
)
494 FD_SET (fd
, &write_mask
);
495 if (fd
> max_input_desc
)
498 fd_callback_info
[fd
].func
= func
;
499 fd_callback_info
[fd
].data
= data
;
500 fd_callback_info
[fd
].condition
|= FOR_WRITE
;
503 /* FD is no longer an input descriptor; update max_input_desc accordingly. */
506 delete_input_desc (int fd
)
508 if (fd
== max_input_desc
)
512 while (0 <= fd
&& ! (FD_ISSET (fd
, &input_wait_mask
)
513 || FD_ISSET (fd
, &write_mask
)));
519 /* Stop monitoring file descriptor FD for when write is possible. */
522 delete_write_fd (int fd
)
524 FD_CLR (fd
, &write_mask
);
525 fd_callback_info
[fd
].condition
&= ~FOR_WRITE
;
526 if (fd_callback_info
[fd
].condition
== 0)
528 fd_callback_info
[fd
].func
= 0;
529 fd_callback_info
[fd
].data
= 0;
530 delete_input_desc (fd
);
535 /* Compute the Lisp form of the process status, p->status, from
536 the numeric status that was returned by `wait'. */
538 static Lisp_Object
status_convert (int);
541 update_status (struct Lisp_Process
*p
)
543 eassert (p
->raw_status_new
);
544 pset_status (p
, status_convert (p
->raw_status
));
545 p
->raw_status_new
= 0;
548 /* Convert a process status word in Unix format to
549 the list that we use internally. */
552 status_convert (int w
)
555 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
556 else if (WIFEXITED (w
))
557 return Fcons (Qexit
, Fcons (make_number (WEXITSTATUS (w
)),
558 WCOREDUMP (w
) ? Qt
: Qnil
));
559 else if (WIFSIGNALED (w
))
560 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
561 WCOREDUMP (w
) ? Qt
: Qnil
));
566 /* Given a status-list, extract the three pieces of information
567 and store them individually through the three pointers. */
570 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, bool *coredump
)
584 *code
= XFASTINT (XCAR (tem
));
586 *coredump
= !NILP (tem
);
590 /* Return a string describing a process status list. */
593 status_message (struct Lisp_Process
*p
)
595 Lisp_Object status
= p
->status
;
599 Lisp_Object string
, string2
;
601 decode_status (status
, &symbol
, &code
, &coredump
);
603 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
606 synchronize_system_messages_locale ();
607 signame
= strsignal (code
);
609 string
= build_string ("unknown");
614 string
= build_unibyte_string (signame
);
615 if (! NILP (Vlocale_coding_system
))
616 string
= (code_convert_string_norecord
617 (string
, Vlocale_coding_system
, 0));
618 c1
= STRING_CHAR (SDATA (string
));
621 Faset (string
, make_number (0), make_number (c2
));
623 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
624 return concat2 (string
, string2
);
626 else if (EQ (symbol
, Qexit
))
629 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
631 return build_string ("finished\n");
632 string
= Fnumber_to_string (make_number (code
));
633 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
634 return concat3 (build_string ("exited abnormally with code "),
637 else if (EQ (symbol
, Qfailed
))
639 string
= Fnumber_to_string (make_number (code
));
640 string2
= build_string ("\n");
641 return concat3 (build_string ("failed with code "),
645 return Fcopy_sequence (Fsymbol_name (symbol
));
648 enum { PTY_NAME_SIZE
= 24 };
650 /* Open an available pty, returning a file descriptor.
651 Store into PTY_NAME the file name of the terminal corresponding to the pty.
652 Return -1 on failure. */
655 allocate_pty (char pty_name
[PTY_NAME_SIZE
])
664 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
665 for (i
= 0; i
< 16; i
++)
668 #ifdef PTY_NAME_SPRINTF
671 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
672 #endif /* no PTY_NAME_SPRINTF */
676 #else /* no PTY_OPEN */
677 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
678 #endif /* no PTY_OPEN */
683 /* Set FD's close-on-exec flag. This is needed even if
684 PT_OPEN calls posix_openpt with O_CLOEXEC, since POSIX
685 doesn't require support for that combination.
686 Multithreaded platforms where posix_openpt ignores
687 O_CLOEXEC (or where PTY_OPEN doesn't call posix_openpt)
688 have a race condition between the PTY_OPEN and here. */
689 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
691 /* check to make certain that both sides are available
692 this avoids a nasty yet stupid bug in rlogins */
693 #ifdef PTY_TTY_NAME_SPRINTF
696 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
697 #endif /* no PTY_TTY_NAME_SPRINTF */
698 if (faccessat (AT_FDCWD
, pty_name
, R_OK
| W_OK
, AT_EACCESS
) != 0)
711 #endif /* HAVE_PTYS */
716 make_process (Lisp_Object name
)
718 register Lisp_Object val
, tem
, name1
;
719 register struct Lisp_Process
*p
;
720 char suffix
[sizeof "<>" + INT_STRLEN_BOUND (printmax_t
)];
723 p
= allocate_process ();
724 /* Initialize Lisp data. Note that allocate_process initializes all
725 Lisp data to nil, so do it only for slots which should not be nil. */
726 pset_status (p
, Qrun
);
727 pset_mark (p
, Fmake_marker ());
729 /* Initialize non-Lisp data. Note that allocate_process zeroes out all
730 non-Lisp data, so do it only for slots which should not be zero. */
733 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
737 p
->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
740 /* If name is already in use, modify it until it is unused. */
745 tem
= Fget_process (name1
);
746 if (NILP (tem
)) break;
747 name1
= concat2 (name
, make_formatted_string (suffix
, "<%"pMd
">", i
));
751 pset_sentinel (p
, Qinternal_default_process_sentinel
);
752 pset_filter (p
, Qinternal_default_process_filter
);
753 XSETPROCESS (val
, p
);
754 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
759 remove_process (register Lisp_Object proc
)
761 register Lisp_Object pair
;
763 pair
= Frassq (proc
, Vprocess_alist
);
764 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
766 deactivate_process (proc
);
770 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
771 doc
: /* Return t if OBJECT is a process. */)
774 return PROCESSP (object
) ? Qt
: Qnil
;
777 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
778 doc
: /* Return the process named NAME, or nil if there is none. */)
779 (register Lisp_Object name
)
784 return Fcdr (Fassoc (name
, Vprocess_alist
));
787 /* This is how commands for the user decode process arguments. It
788 accepts a process, a process name, a buffer, a buffer name, or nil.
789 Buffers denote the first process in the buffer, and nil denotes the
793 get_process (register Lisp_Object name
)
795 register Lisp_Object proc
, obj
;
798 obj
= Fget_process (name
);
800 obj
= Fget_buffer (name
);
802 error ("Process %s does not exist", SDATA (name
));
804 else if (NILP (name
))
805 obj
= Fcurrent_buffer ();
809 /* Now obj should be either a buffer object or a process object. */
812 if (NILP (BVAR (XBUFFER (obj
), name
)))
813 error ("Attempt to get process for a dead buffer");
814 proc
= Fget_buffer_process (obj
);
816 error ("Buffer %s has no process", SDATA (BVAR (XBUFFER (obj
), name
)));
827 /* Fdelete_process promises to immediately forget about the process, but in
828 reality, Emacs needs to remember those processes until they have been
829 treated by the SIGCHLD handler and waitpid has been invoked on them;
830 otherwise they might fill up the kernel's process table.
832 Some processes created by call-process are also put onto this list.
834 Members of this list are (process-ID . filename) pairs. The
835 process-ID is a number; the filename, if a string, is a file that
836 needs to be removed after the process exits. */
837 static Lisp_Object deleted_pid_list
;
840 record_deleted_pid (pid_t pid
, Lisp_Object filename
)
842 deleted_pid_list
= Fcons (Fcons (make_fixnum_or_float (pid
), filename
),
843 /* GC treated elements set to nil. */
844 Fdelq (Qnil
, deleted_pid_list
));
848 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
849 doc
: /* Delete PROCESS: kill it and forget about it immediately.
850 PROCESS may be a process, a buffer, the name of a process or buffer, or
851 nil, indicating the current buffer's process. */)
852 (register Lisp_Object process
)
854 register struct Lisp_Process
*p
;
856 process
= get_process (process
);
857 p
= XPROCESS (process
);
859 p
->raw_status_new
= 0;
860 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
862 pset_status (p
, list2 (Qexit
, make_number (0)));
863 p
->tick
= ++process_tick
;
864 status_notify (p
, NULL
);
865 redisplay_preserve_echo_area (13);
870 record_kill_process (p
, Qnil
);
874 /* Update P's status, since record_kill_process will make the
875 SIGCHLD handler update deleted_pid_list, not *P. */
877 if (p
->raw_status_new
)
879 symbol
= CONSP (p
->status
) ? XCAR (p
->status
) : p
->status
;
880 if (! (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)))
881 pset_status (p
, list2 (Qsignal
, make_number (SIGKILL
)));
883 p
->tick
= ++process_tick
;
884 status_notify (p
, NULL
);
885 redisplay_preserve_echo_area (13);
888 remove_process (process
);
892 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
893 doc
: /* Return the status of PROCESS.
894 The returned value is one of the following symbols:
895 run -- for a process that is running.
896 stop -- for a process stopped but continuable.
897 exit -- for a process that has exited.
898 signal -- for a process that has got a fatal signal.
899 open -- for a network stream connection that is open.
900 listen -- for a network stream server that is listening.
901 closed -- for a network stream connection that is closed.
902 connect -- when waiting for a non-blocking connection to complete.
903 failed -- when a non-blocking connection has failed.
904 nil -- if arg is a process name and no such process exists.
905 PROCESS may be a process, a buffer, the name of a process, or
906 nil, indicating the current buffer's process. */)
907 (register Lisp_Object process
)
909 register struct Lisp_Process
*p
;
910 register Lisp_Object status
;
912 if (STRINGP (process
))
913 process
= Fget_process (process
);
915 process
= get_process (process
);
920 p
= XPROCESS (process
);
921 if (p
->raw_status_new
)
925 status
= XCAR (status
);
926 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
928 if (EQ (status
, Qexit
))
930 else if (EQ (p
->command
, Qt
))
932 else if (EQ (status
, Qrun
))
938 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
940 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
941 If PROCESS has not yet exited or died, return 0. */)
942 (register Lisp_Object process
)
944 CHECK_PROCESS (process
);
945 if (XPROCESS (process
)->raw_status_new
)
946 update_status (XPROCESS (process
));
947 if (CONSP (XPROCESS (process
)->status
))
948 return XCAR (XCDR (XPROCESS (process
)->status
));
949 return make_number (0);
952 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
953 doc
: /* Return the process id of PROCESS.
954 This is the pid of the external process which PROCESS uses or talks to.
955 For a network connection, this value is nil. */)
956 (register Lisp_Object process
)
960 CHECK_PROCESS (process
);
961 pid
= XPROCESS (process
)->pid
;
962 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
965 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
966 doc
: /* Return the name of PROCESS, as a string.
967 This is the name of the program invoked in PROCESS,
968 possibly modified to make it unique among process names. */)
969 (register Lisp_Object process
)
971 CHECK_PROCESS (process
);
972 return XPROCESS (process
)->name
;
975 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
976 doc
: /* Return the command that was executed to start PROCESS.
977 This is a list of strings, the first string being the program executed
978 and the rest of the strings being the arguments given to it.
979 For a network or serial process, this is nil (process is running) or t
980 \(process is stopped). */)
981 (register Lisp_Object process
)
983 CHECK_PROCESS (process
);
984 return XPROCESS (process
)->command
;
987 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
988 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
989 This is the terminal that the process itself reads and writes on,
990 not the name of the pty that Emacs uses to talk with that terminal. */)
991 (register Lisp_Object process
)
993 CHECK_PROCESS (process
);
994 return XPROCESS (process
)->tty_name
;
997 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
999 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
1001 (register Lisp_Object process
, Lisp_Object buffer
)
1003 struct Lisp_Process
*p
;
1005 CHECK_PROCESS (process
);
1007 CHECK_BUFFER (buffer
);
1008 p
= XPROCESS (process
);
1009 pset_buffer (p
, buffer
);
1010 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1011 pset_childp (p
, Fplist_put (p
->childp
, QCbuffer
, buffer
));
1012 setup_process_coding_systems (process
);
1016 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
1018 doc
: /* Return the buffer PROCESS is associated with.
1019 The default process filter inserts output from PROCESS into this buffer. */)
1020 (register Lisp_Object process
)
1022 CHECK_PROCESS (process
);
1023 return XPROCESS (process
)->buffer
;
1026 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
1028 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1029 (register Lisp_Object process
)
1031 CHECK_PROCESS (process
);
1032 return XPROCESS (process
)->mark
;
1035 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1037 doc
: /* Give PROCESS the filter function FILTER; nil means default.
1038 A value of t means stop accepting output from the process.
1040 When a process has a non-default filter, its buffer is not used for output.
1041 Instead, each time it does output, the entire string of output is
1042 passed to the filter.
1044 The filter gets two arguments: the process and the string of output.
1045 The string argument is normally a multibyte string, except:
1046 - if the process's input coding system is no-conversion or raw-text,
1047 it is a unibyte string (the non-converted input), or else
1048 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1049 string (the result of converting the decoded input multibyte
1050 string to unibyte with `string-make-unibyte'). */)
1051 (register Lisp_Object process
, Lisp_Object filter
)
1053 struct Lisp_Process
*p
;
1055 CHECK_PROCESS (process
);
1056 p
= XPROCESS (process
);
1058 /* Don't signal an error if the process's input file descriptor
1059 is closed. This could make debugging Lisp more difficult,
1060 for example when doing something like
1062 (setq process (start-process ...))
1064 (set-process-filter process ...) */
1067 filter
= Qinternal_default_process_filter
;
1071 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1073 FD_CLR (p
->infd
, &input_wait_mask
);
1074 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1076 else if (EQ (p
->filter
, Qt
)
1077 /* Network or serial process not stopped: */
1078 && !EQ (p
->command
, Qt
))
1080 FD_SET (p
->infd
, &input_wait_mask
);
1081 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1085 pset_filter (p
, filter
);
1086 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1087 pset_childp (p
, Fplist_put (p
->childp
, QCfilter
, filter
));
1088 setup_process_coding_systems (process
);
1092 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1094 doc
: /* Return the filter function of PROCESS.
1095 See `set-process-filter' for more info on filter functions. */)
1096 (register Lisp_Object process
)
1098 CHECK_PROCESS (process
);
1099 return XPROCESS (process
)->filter
;
1102 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1104 doc
: /* Give PROCESS the sentinel SENTINEL; nil for default.
1105 The sentinel is called as a function when the process changes state.
1106 It gets two arguments: the process, and a string describing the change. */)
1107 (register Lisp_Object process
, Lisp_Object sentinel
)
1109 struct Lisp_Process
*p
;
1111 CHECK_PROCESS (process
);
1112 p
= XPROCESS (process
);
1114 if (NILP (sentinel
))
1115 sentinel
= Qinternal_default_process_sentinel
;
1117 pset_sentinel (p
, sentinel
);
1118 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1119 pset_childp (p
, Fplist_put (p
->childp
, QCsentinel
, sentinel
));
1123 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1125 doc
: /* Return the sentinel of PROCESS.
1126 See `set-process-sentinel' for more info on sentinels. */)
1127 (register Lisp_Object process
)
1129 CHECK_PROCESS (process
);
1130 return XPROCESS (process
)->sentinel
;
1133 DEFUN ("set-process-window-size", Fset_process_window_size
,
1134 Sset_process_window_size
, 3, 3, 0,
1135 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1136 (Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1138 CHECK_PROCESS (process
);
1140 /* All known platforms store window sizes as 'unsigned short'. */
1141 CHECK_RANGED_INTEGER (height
, 0, USHRT_MAX
);
1142 CHECK_RANGED_INTEGER (width
, 0, USHRT_MAX
);
1144 if (XPROCESS (process
)->infd
< 0
1145 || (set_window_size (XPROCESS (process
)->infd
,
1146 XINT (height
), XINT (width
))
1153 DEFUN ("set-process-inherit-coding-system-flag",
1154 Fset_process_inherit_coding_system_flag
,
1155 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1156 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1157 If the second argument FLAG is non-nil, then the variable
1158 `buffer-file-coding-system' of the buffer associated with PROCESS
1159 will be bound to the value of the coding system used to decode
1162 This is useful when the coding system specified for the process buffer
1163 leaves either the character code conversion or the end-of-line conversion
1164 unspecified, or if the coding system used to decode the process output
1165 is more appropriate for saving the process buffer.
1167 Binding the variable `inherit-process-coding-system' to non-nil before
1168 starting the process is an alternative way of setting the inherit flag
1169 for the process which will run.
1171 This function returns FLAG. */)
1172 (register Lisp_Object process
, Lisp_Object flag
)
1174 CHECK_PROCESS (process
);
1175 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1179 DEFUN ("set-process-query-on-exit-flag",
1180 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1182 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1183 If the second argument FLAG is non-nil, Emacs will query the user before
1184 exiting or killing a buffer if PROCESS is running. This function
1186 (register Lisp_Object process
, Lisp_Object flag
)
1188 CHECK_PROCESS (process
);
1189 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1193 DEFUN ("process-query-on-exit-flag",
1194 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1196 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1197 (register Lisp_Object process
)
1199 CHECK_PROCESS (process
);
1200 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1203 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1205 doc
: /* Return the contact info of PROCESS; t for a real child.
1206 For a network or serial connection, the value depends on the optional
1207 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1208 SERVICE) for a network connection or (PORT SPEED) for a serial
1209 connection. If KEY is t, the complete contact information for the
1210 connection is returned, else the specific value for the keyword KEY is
1211 returned. See `make-network-process' or `make-serial-process' for a
1212 list of keywords. */)
1213 (register Lisp_Object process
, Lisp_Object key
)
1215 Lisp_Object contact
;
1217 CHECK_PROCESS (process
);
1218 contact
= XPROCESS (process
)->childp
;
1220 #ifdef DATAGRAM_SOCKETS
1221 if (DATAGRAM_CONN_P (process
)
1222 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1223 contact
= Fplist_put (contact
, QCremote
,
1224 Fprocess_datagram_address (process
));
1227 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1229 if (NILP (key
) && NETCONN_P (process
))
1230 return list2 (Fplist_get (contact
, QChost
),
1231 Fplist_get (contact
, QCservice
));
1232 if (NILP (key
) && SERIALCONN_P (process
))
1233 return list2 (Fplist_get (contact
, QCport
),
1234 Fplist_get (contact
, QCspeed
));
1235 return Fplist_get (contact
, key
);
1238 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1240 doc
: /* Return the plist of PROCESS. */)
1241 (register Lisp_Object process
)
1243 CHECK_PROCESS (process
);
1244 return XPROCESS (process
)->plist
;
1247 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1249 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1250 (register Lisp_Object process
, Lisp_Object plist
)
1252 CHECK_PROCESS (process
);
1255 pset_plist (XPROCESS (process
), plist
);
1259 #if 0 /* Turned off because we don't currently record this info
1260 in the process. Perhaps add it. */
1261 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1262 doc
: /* Return the connection type of PROCESS.
1263 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1264 a socket connection. */)
1265 (Lisp_Object process
)
1267 return XPROCESS (process
)->type
;
1271 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1272 doc
: /* Return the connection type of PROCESS.
1273 The value is either the symbol `real', `network', or `serial'.
1274 PROCESS may be a process, a buffer, the name of a process or buffer, or
1275 nil, indicating the current buffer's process. */)
1276 (Lisp_Object process
)
1279 proc
= get_process (process
);
1280 return XPROCESS (proc
)->type
;
1283 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1285 doc
: /* Convert network ADDRESS from internal format to a string.
1286 A 4 or 5 element vector represents an IPv4 address (with port number).
1287 An 8 or 9 element vector represents an IPv6 address (with port number).
1288 If optional second argument OMIT-PORT is non-nil, don't include a port
1289 number in the string, even when present in ADDRESS.
1290 Returns nil if format of ADDRESS is invalid. */)
1291 (Lisp_Object address
, Lisp_Object omit_port
)
1296 if (STRINGP (address
)) /* AF_LOCAL */
1299 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1301 register struct Lisp_Vector
*p
= XVECTOR (address
);
1302 ptrdiff_t size
= p
->header
.size
;
1303 Lisp_Object args
[10];
1306 if (size
== 4 || (size
== 5 && !NILP (omit_port
)))
1308 args
[0] = build_string ("%d.%d.%d.%d");
1313 args
[0] = build_string ("%d.%d.%d.%d:%d");
1316 else if (size
== 8 || (size
== 9 && !NILP (omit_port
)))
1318 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1323 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1329 for (i
= 0; i
< nargs
; i
++)
1331 if (! RANGED_INTEGERP (0, p
->contents
[i
], 65535))
1334 if (nargs
<= 5 /* IPv4 */
1335 && i
< 4 /* host, not port */
1336 && XINT (p
->contents
[i
]) > 255)
1339 args
[i
+1] = p
->contents
[i
];
1342 return Fformat (nargs
+1, args
);
1345 if (CONSP (address
))
1347 Lisp_Object args
[2];
1348 args
[0] = build_string ("<Family %d>");
1349 args
[1] = Fcar (address
);
1350 return Fformat (2, args
);
1356 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1357 doc
: /* Return a list of all processes that are Emacs sub-processes. */)
1360 return Fmapcar (Qcdr
, Vprocess_alist
);
1363 /* Starting asynchronous inferior processes. */
1365 static void start_process_unwind (Lisp_Object proc
);
1367 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1368 doc
: /* Start a program in a subprocess. Return the process object for it.
1369 NAME is name for process. It is modified if necessary to make it unique.
1370 BUFFER is the buffer (or buffer name) to associate with the process.
1372 Process output (both standard output and standard error streams) goes
1373 at end of BUFFER, unless you specify an output stream or filter
1374 function to handle the output. BUFFER may also be nil, meaning that
1375 this process is not associated with any buffer.
1377 PROGRAM is the program file name. It is searched for in `exec-path'
1378 (which see). If nil, just associate a pty with the buffer. Remaining
1379 arguments are strings to give program as arguments.
1381 If you want to separate standard output from standard error, invoke
1382 the command through a shell and redirect one of them using the shell
1385 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1386 (ptrdiff_t nargs
, Lisp_Object
*args
)
1388 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1389 register unsigned char **new_argv
;
1395 buffer
= Fget_buffer_create (buffer
);
1397 /* Make sure that the child will be able to chdir to the current
1398 buffer's current directory, or its unhandled equivalent. We
1399 can't just have the child check for an error when it does the
1400 chdir, since it's in a vfork.
1402 We have to GCPRO around this because Fexpand_file_name and
1403 Funhandled_file_name_directory might call a file name handling
1404 function. The argument list is protected by the caller, so all
1405 we really have to worry about is buffer. */
1407 struct gcpro gcpro1
;
1409 current_dir
= encode_current_directory ();
1414 CHECK_STRING (name
);
1418 if (!NILP (program
))
1419 CHECK_STRING (program
);
1421 proc
= make_process (name
);
1422 /* If an error occurs and we can't start the process, we want to
1423 remove it from the process list. This means that each error
1424 check in create_process doesn't need to call remove_process
1425 itself; it's all taken care of here. */
1426 record_unwind_protect (start_process_unwind
, proc
);
1428 pset_childp (XPROCESS (proc
), Qt
);
1429 pset_plist (XPROCESS (proc
), Qnil
);
1430 pset_type (XPROCESS (proc
), Qreal
);
1431 pset_buffer (XPROCESS (proc
), buffer
);
1432 pset_sentinel (XPROCESS (proc
), Qinternal_default_process_sentinel
);
1433 pset_filter (XPROCESS (proc
), Qinternal_default_process_filter
);
1434 pset_command (XPROCESS (proc
), Flist (nargs
- 2, args
+ 2));
1437 /* AKA GNUTLS_INITSTAGE(proc). */
1438 XPROCESS (proc
)->gnutls_initstage
= GNUTLS_STAGE_EMPTY
;
1439 pset_gnutls_cred_type (XPROCESS (proc
), Qnil
);
1442 #ifdef ADAPTIVE_READ_BUFFERING
1443 XPROCESS (proc
)->adaptive_read_buffering
1444 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1445 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1448 /* Make the process marker point into the process buffer (if any). */
1449 if (BUFFERP (buffer
))
1450 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1451 BUF_ZV (XBUFFER (buffer
)),
1452 BUF_ZV_BYTE (XBUFFER (buffer
)));
1455 /* Decide coding systems for communicating with the process. Here
1456 we don't setup the structure coding_system nor pay attention to
1457 unibyte mode. They are done in create_process. */
1459 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1460 Lisp_Object coding_systems
= Qt
;
1461 Lisp_Object val
, *args2
;
1462 struct gcpro gcpro1
, gcpro2
;
1464 val
= Vcoding_system_for_read
;
1467 args2
= alloca ((nargs
+ 1) * sizeof *args2
);
1468 args2
[0] = Qstart_process
;
1469 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1470 GCPRO2 (proc
, current_dir
);
1471 if (!NILP (program
))
1472 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1474 if (CONSP (coding_systems
))
1475 val
= XCAR (coding_systems
);
1476 else if (CONSP (Vdefault_process_coding_system
))
1477 val
= XCAR (Vdefault_process_coding_system
);
1479 pset_decode_coding_system (XPROCESS (proc
), val
);
1481 val
= Vcoding_system_for_write
;
1484 if (EQ (coding_systems
, Qt
))
1486 args2
= alloca ((nargs
+ 1) * sizeof *args2
);
1487 args2
[0] = Qstart_process
;
1488 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1489 GCPRO2 (proc
, current_dir
);
1490 if (!NILP (program
))
1491 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1494 if (CONSP (coding_systems
))
1495 val
= XCDR (coding_systems
);
1496 else if (CONSP (Vdefault_process_coding_system
))
1497 val
= XCDR (Vdefault_process_coding_system
);
1499 pset_encode_coding_system (XPROCESS (proc
), val
);
1500 /* Note: At this moment, the above coding system may leave
1501 text-conversion or eol-conversion unspecified. They will be
1502 decided after we read output from the process and decode it by
1503 some coding system, or just before we actually send a text to
1508 pset_decoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1509 XPROCESS (proc
)->decoding_carryover
= 0;
1510 pset_encoding_buf (XPROCESS (proc
), empty_unibyte_string
);
1512 XPROCESS (proc
)->inherit_coding_system_flag
1513 = !(NILP (buffer
) || !inherit_process_coding_system
);
1515 if (!NILP (program
))
1517 /* If program file name is not absolute, search our path for it.
1518 Put the name we will really use in TEM. */
1519 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1520 && !(SCHARS (program
) > 1
1521 && IS_DEVICE_SEP (SREF (program
, 1))))
1523 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1526 GCPRO4 (name
, program
, buffer
, current_dir
);
1527 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
,
1528 make_number (X_OK
), false);
1531 report_file_error ("Searching for program", program
);
1532 tem
= Fexpand_file_name (tem
, Qnil
);
1536 if (!NILP (Ffile_directory_p (program
)))
1537 error ("Specified program for new process is a directory");
1541 /* If program file name starts with /: for quoting a magic name,
1543 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1544 && SREF (tem
, 1) == ':')
1545 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1548 Lisp_Object arg_encoding
= Qnil
;
1549 struct gcpro gcpro1
;
1552 /* Encode the file name and put it in NEW_ARGV.
1553 That's where the child will use it to execute the program. */
1554 tem
= list1 (ENCODE_FILE (tem
));
1556 /* Here we encode arguments by the coding system used for sending
1557 data to the process. We don't support using different coding
1558 systems for encoding arguments and for encoding data sent to the
1561 for (i
= 3; i
< nargs
; i
++)
1563 tem
= Fcons (args
[i
], tem
);
1564 CHECK_STRING (XCAR (tem
));
1565 if (STRING_MULTIBYTE (XCAR (tem
)))
1567 if (NILP (arg_encoding
))
1568 arg_encoding
= (complement_process_encoding_system
1569 (XPROCESS (proc
)->encode_coding_system
));
1571 code_convert_string_norecord
1572 (XCAR (tem
), arg_encoding
, 1));
1579 /* Now that everything is encoded we can collect the strings into
1581 new_argv
= alloca ((nargs
- 1) * sizeof *new_argv
);
1582 new_argv
[nargs
- 2] = 0;
1584 for (i
= nargs
- 2; i
-- != 0; )
1586 new_argv
[i
] = SDATA (XCAR (tem
));
1590 create_process (proc
, (char **) new_argv
, current_dir
);
1599 /* This function is the unwind_protect form for Fstart_process. If
1600 PROC doesn't have its pid set, then we know someone has signaled
1601 an error and the process wasn't started successfully, so we should
1602 remove it from the process list. */
1604 start_process_unwind (Lisp_Object proc
)
1606 if (!PROCESSP (proc
))
1609 /* Was PROC started successfully?
1610 -2 is used for a pty with no process, eg for gdb. */
1611 if (XPROCESS (proc
)->pid
<= 0 && XPROCESS (proc
)->pid
!= -2)
1612 remove_process (proc
);
1615 /* If *FD_ADDR is nonnegative, close it, and mark it as closed. */
1618 close_process_fd (int *fd_addr
)
1628 /* Indexes of file descriptors in open_fds. */
1631 /* The pipe from Emacs to its subprocess. */
1633 WRITE_TO_SUBPROCESS
,
1635 /* The main pipe from the subprocess to Emacs. */
1636 READ_FROM_SUBPROCESS
,
1639 /* The pipe from the subprocess to Emacs that is closed when the
1640 subprocess execs. */
1641 READ_FROM_EXEC_MONITOR
,
1645 verify (PROCESS_OPEN_FDS
== EXEC_MONITOR_OUTPUT
+ 1);
1648 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1650 struct Lisp_Process
*p
= XPROCESS (process
);
1651 int inchannel
, outchannel
;
1654 int forkin
, forkout
;
1656 char pty_name
[PTY_NAME_SIZE
];
1657 Lisp_Object lisp_pty_name
= Qnil
;
1660 inchannel
= outchannel
= -1;
1662 if (!NILP (Vprocess_connection_type
))
1663 outchannel
= inchannel
= allocate_pty (pty_name
);
1667 p
->open_fd
[READ_FROM_SUBPROCESS
] = inchannel
;
1668 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1669 /* On most USG systems it does not work to open the pty's tty here,
1670 then close it and reopen it in the child. */
1671 /* Don't let this terminal become our controlling terminal
1672 (in case we don't have one). */
1673 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1675 report_file_error ("Opening pty", Qnil
);
1676 p
->open_fd
[SUBPROCESS_STDIN
] = forkin
;
1678 forkin
= forkout
= -1;
1679 #endif /* not USG, or USG_SUBTTY_WORKS */
1681 lisp_pty_name
= build_string (pty_name
);
1685 if (emacs_pipe (p
->open_fd
+ SUBPROCESS_STDIN
) != 0
1686 || emacs_pipe (p
->open_fd
+ READ_FROM_SUBPROCESS
) != 0)
1687 report_file_error ("Creating pipe", Qnil
);
1688 forkin
= p
->open_fd
[SUBPROCESS_STDIN
];
1689 outchannel
= p
->open_fd
[WRITE_TO_SUBPROCESS
];
1690 inchannel
= p
->open_fd
[READ_FROM_SUBPROCESS
];
1691 forkout
= p
->open_fd
[SUBPROCESS_STDOUT
];
1695 if (emacs_pipe (p
->open_fd
+ READ_FROM_EXEC_MONITOR
) != 0)
1696 report_file_error ("Creating pipe", Qnil
);
1699 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1700 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1702 /* Record this as an active process, with its channels. */
1703 chan_process
[inchannel
] = process
;
1704 p
->infd
= inchannel
;
1705 p
->outfd
= outchannel
;
1707 /* Previously we recorded the tty descriptor used in the subprocess.
1708 It was only used for getting the foreground tty process, so now
1709 we just reopen the device (see emacs_get_tty_pgrp) as this is
1710 more portable (see USG_SUBTTY_WORKS above). */
1712 p
->pty_flag
= pty_flag
;
1713 pset_status (p
, Qrun
);
1715 FD_SET (inchannel
, &input_wait_mask
);
1716 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1717 if (inchannel
> max_process_desc
)
1718 max_process_desc
= inchannel
;
1720 /* This may signal an error. */
1721 setup_process_coding_systems (process
);
1724 block_child_signal (&oldset
);
1727 /* vfork, and prevent local vars from being clobbered by the vfork. */
1729 Lisp_Object
volatile current_dir_volatile
= current_dir
;
1730 Lisp_Object
volatile lisp_pty_name_volatile
= lisp_pty_name
;
1731 char **volatile new_argv_volatile
= new_argv
;
1732 int volatile forkin_volatile
= forkin
;
1733 int volatile forkout_volatile
= forkout
;
1734 struct Lisp_Process
*p_volatile
= p
;
1738 current_dir
= current_dir_volatile
;
1739 lisp_pty_name
= lisp_pty_name_volatile
;
1740 new_argv
= new_argv_volatile
;
1741 forkin
= forkin_volatile
;
1742 forkout
= forkout_volatile
;
1745 pty_flag
= p
->pty_flag
;
1749 #endif /* not WINDOWSNT */
1751 int xforkin
= forkin
;
1752 int xforkout
= forkout
;
1754 /* Make the pty be the controlling terminal of the process. */
1756 /* First, disconnect its current controlling terminal. */
1757 /* We tried doing setsid only if pty_flag, but it caused
1758 process_set_signal to fail on SGI when using a pipe. */
1760 /* Make the pty's terminal the controlling terminal. */
1761 if (pty_flag
&& xforkin
>= 0)
1764 /* We ignore the return value
1765 because faith@cs.unc.edu says that is necessary on Linux. */
1766 ioctl (xforkin
, TIOCSCTTY
, 0);
1769 #if defined (LDISC1)
1770 if (pty_flag
&& xforkin
>= 0)
1773 tcgetattr (xforkin
, &t
);
1775 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1776 emacs_perror ("create_process/tcsetattr LDISC1");
1779 #if defined (NTTYDISC) && defined (TIOCSETD)
1780 if (pty_flag
&& xforkin
>= 0)
1782 /* Use new line discipline. */
1783 int ldisc
= NTTYDISC
;
1784 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1789 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1790 can do TIOCSPGRP only to the process's controlling tty. */
1793 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1794 I can't test it since I don't have 4.3. */
1795 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1798 ioctl (j
, TIOCNOTTY
, 0);
1802 #endif /* TIOCNOTTY */
1804 #if !defined (DONT_REOPEN_PTY)
1805 /*** There is a suggestion that this ought to be a
1806 conditional on TIOCSPGRP, or !defined TIOCSCTTY.
1807 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1808 that system does seem to need this code, even though
1809 both TIOCSCTTY is defined. */
1810 /* Now close the pty (if we had it open) and reopen it.
1811 This makes the pty the controlling terminal of the subprocess. */
1815 /* I wonder if emacs_close (emacs_open (SSDATA (lisp_pty_name), ...))
1818 emacs_close (xforkin
);
1819 xforkout
= xforkin
= emacs_open (SSDATA (lisp_pty_name
), O_RDWR
, 0);
1823 emacs_perror (SSDATA (lisp_pty_name
));
1824 _exit (EXIT_CANCELED
);
1828 #endif /* not DONT_REOPEN_PTY */
1830 #ifdef SETUP_SLAVE_PTY
1835 #endif /* SETUP_SLAVE_PTY */
1836 #endif /* HAVE_PTYS */
1838 signal (SIGINT
, SIG_DFL
);
1839 signal (SIGQUIT
, SIG_DFL
);
1841 signal (SIGPROF
, SIG_DFL
);
1844 /* Emacs ignores SIGPIPE, but the child should not. */
1845 signal (SIGPIPE
, SIG_DFL
);
1847 /* Stop blocking SIGCHLD in the child. */
1848 unblock_child_signal (&oldset
);
1851 child_setup_tty (xforkout
);
1853 pid
= child_setup (xforkin
, xforkout
, xforkout
, new_argv
, 1, current_dir
);
1854 #else /* not WINDOWSNT */
1855 child_setup (xforkin
, xforkout
, xforkout
, new_argv
, 1, current_dir
);
1856 #endif /* not WINDOWSNT */
1859 /* Back in the parent process. */
1861 vfork_errno
= errno
;
1866 /* Stop blocking in the parent. */
1867 unblock_child_signal (&oldset
);
1871 report_file_errno ("Doing vfork", Qnil
, vfork_errno
);
1874 /* vfork succeeded. */
1876 /* Close the pipe ends that the child uses, or the child's pty. */
1877 close_process_fd (&p
->open_fd
[SUBPROCESS_STDIN
]);
1878 close_process_fd (&p
->open_fd
[SUBPROCESS_STDOUT
]);
1881 register_child (pid
, inchannel
);
1882 #endif /* WINDOWSNT */
1884 pset_tty_name (p
, lisp_pty_name
);
1887 /* Wait for child_setup to complete in case that vfork is
1888 actually defined as fork. The descriptor
1889 XPROCESS (proc)->open_fd[EXEC_MONITOR_OUTPUT]
1890 of a pipe is closed at the child side either by close-on-exec
1891 on successful execve or the _exit call in child_setup. */
1895 close_process_fd (&p
->open_fd
[EXEC_MONITOR_OUTPUT
]);
1896 emacs_read (p
->open_fd
[READ_FROM_EXEC_MONITOR
], &dummy
, 1);
1897 close_process_fd (&p
->open_fd
[READ_FROM_EXEC_MONITOR
]);
1904 create_pty (Lisp_Object process
)
1906 struct Lisp_Process
*p
= XPROCESS (process
);
1907 char pty_name
[PTY_NAME_SIZE
];
1908 int pty_fd
= NILP (Vprocess_connection_type
) ? -1 : allocate_pty (pty_name
);
1912 p
->open_fd
[SUBPROCESS_STDIN
] = pty_fd
;
1913 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1914 /* On most USG systems it does not work to open the pty's tty here,
1915 then close it and reopen it in the child. */
1916 /* Don't let this terminal become our controlling terminal
1917 (in case we don't have one). */
1918 int forkout
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1920 report_file_error ("Opening pty", Qnil
);
1921 p
->open_fd
[WRITE_TO_SUBPROCESS
] = forkout
;
1922 #if defined (DONT_REOPEN_PTY)
1923 /* In the case that vfork is defined as fork, the parent process
1924 (Emacs) may send some data before the child process completes
1925 tty options setup. So we setup tty before forking. */
1926 child_setup_tty (forkout
);
1927 #endif /* DONT_REOPEN_PTY */
1928 #endif /* not USG, or USG_SUBTTY_WORKS */
1930 fcntl (pty_fd
, F_SETFL
, O_NONBLOCK
);
1932 /* Record this as an active process, with its channels.
1933 As a result, child_setup will close Emacs's side of the pipes. */
1934 chan_process
[pty_fd
] = process
;
1938 /* Previously we recorded the tty descriptor used in the subprocess.
1939 It was only used for getting the foreground tty process, so now
1940 we just reopen the device (see emacs_get_tty_pgrp) as this is
1941 more portable (see USG_SUBTTY_WORKS above). */
1944 pset_status (p
, Qrun
);
1945 setup_process_coding_systems (process
);
1947 FD_SET (pty_fd
, &input_wait_mask
);
1948 FD_SET (pty_fd
, &non_keyboard_wait_mask
);
1949 if (pty_fd
> max_process_desc
)
1950 max_process_desc
= pty_fd
;
1952 pset_tty_name (p
, build_string (pty_name
));
1959 /* Convert an internal struct sockaddr to a lisp object (vector or string).
1960 The address family of sa is not included in the result. */
1963 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
1965 Lisp_Object address
;
1968 register struct Lisp_Vector
*p
;
1970 /* Workaround for a bug in getsockname on BSD: Names bound to
1971 sockets in the UNIX domain are inaccessible; getsockname returns
1972 a zero length name. */
1973 if (len
< offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
1974 return empty_unibyte_string
;
1976 switch (sa
->sa_family
)
1980 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
1981 len
= sizeof (sin
->sin_addr
) + 1;
1982 address
= Fmake_vector (make_number (len
), Qnil
);
1983 p
= XVECTOR (address
);
1984 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
1985 cp
= (unsigned char *) &sin
->sin_addr
;
1991 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
1992 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
1993 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
1994 address
= Fmake_vector (make_number (len
), Qnil
);
1995 p
= XVECTOR (address
);
1996 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
1997 for (i
= 0; i
< len
; i
++)
1998 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2002 #ifdef HAVE_LOCAL_SOCKETS
2005 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2006 ptrdiff_t name_length
= len
- offsetof (struct sockaddr_un
, sun_path
);
2007 /* If the first byte is NUL, the name is a Linux abstract
2008 socket name, and the name can contain embedded NULs. If
2009 it's not, we have a NUL-terminated string. Be careful not
2010 to walk past the end of the object looking for the name
2011 terminator, however. */
2012 if (name_length
> 0 && sockun
->sun_path
[0] != '\0')
2014 const char *terminator
2015 = memchr (sockun
->sun_path
, '\0', name_length
);
2018 name_length
= terminator
- (const char *) sockun
->sun_path
;
2021 return make_unibyte_string (sockun
->sun_path
, name_length
);
2025 len
-= offsetof (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2026 address
= Fcons (make_number (sa
->sa_family
),
2027 Fmake_vector (make_number (len
), Qnil
));
2028 p
= XVECTOR (XCDR (address
));
2029 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2035 p
->contents
[i
++] = make_number (*cp
++);
2041 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2044 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2046 register struct Lisp_Vector
*p
;
2048 if (VECTORP (address
))
2050 p
= XVECTOR (address
);
2051 if (p
->header
.size
== 5)
2054 return sizeof (struct sockaddr_in
);
2057 else if (p
->header
.size
== 9)
2059 *familyp
= AF_INET6
;
2060 return sizeof (struct sockaddr_in6
);
2064 #ifdef HAVE_LOCAL_SOCKETS
2065 else if (STRINGP (address
))
2067 *familyp
= AF_LOCAL
;
2068 return sizeof (struct sockaddr_un
);
2071 else if (CONSP (address
) && TYPE_RANGED_INTEGERP (int, XCAR (address
))
2072 && VECTORP (XCDR (address
)))
2074 struct sockaddr
*sa
;
2075 *familyp
= XINT (XCAR (address
));
2076 p
= XVECTOR (XCDR (address
));
2077 return p
->header
.size
+ sizeof (sa
->sa_family
);
2082 /* Convert an address object (vector or string) to an internal sockaddr.
2084 The address format has been basically validated by
2085 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2086 it could have come from user data. So if FAMILY is not valid,
2087 we return after zeroing *SA. */
2090 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2092 register struct Lisp_Vector
*p
;
2093 register unsigned char *cp
= NULL
;
2097 memset (sa
, 0, len
);
2099 if (VECTORP (address
))
2101 p
= XVECTOR (address
);
2102 if (family
== AF_INET
)
2104 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2105 len
= sizeof (sin
->sin_addr
) + 1;
2106 hostport
= XINT (p
->contents
[--len
]);
2107 sin
->sin_port
= htons (hostport
);
2108 cp
= (unsigned char *)&sin
->sin_addr
;
2109 sa
->sa_family
= family
;
2112 else if (family
== AF_INET6
)
2114 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2115 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2116 len
= sizeof (sin6
->sin6_addr
) + 1;
2117 hostport
= XINT (p
->contents
[--len
]);
2118 sin6
->sin6_port
= htons (hostport
);
2119 for (i
= 0; i
< len
; i
++)
2120 if (INTEGERP (p
->contents
[i
]))
2122 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2125 sa
->sa_family
= family
;
2132 else if (STRINGP (address
))
2134 #ifdef HAVE_LOCAL_SOCKETS
2135 if (family
== AF_LOCAL
)
2137 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2138 cp
= SDATA (address
);
2139 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2140 sockun
->sun_path
[i
] = *cp
++;
2141 sa
->sa_family
= family
;
2148 p
= XVECTOR (XCDR (address
));
2149 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2152 for (i
= 0; i
< len
; i
++)
2153 if (INTEGERP (p
->contents
[i
]))
2154 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2157 #ifdef DATAGRAM_SOCKETS
2158 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2160 doc
: /* Get the current datagram address associated with PROCESS. */)
2161 (Lisp_Object process
)
2165 CHECK_PROCESS (process
);
2167 if (!DATAGRAM_CONN_P (process
))
2170 channel
= XPROCESS (process
)->infd
;
2171 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2172 datagram_address
[channel
].len
);
2175 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2177 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2178 Returns nil upon error setting address, ADDRESS otherwise. */)
2179 (Lisp_Object process
, Lisp_Object address
)
2184 CHECK_PROCESS (process
);
2186 if (!DATAGRAM_CONN_P (process
))
2189 channel
= XPROCESS (process
)->infd
;
2191 len
= get_lisp_to_sockaddr_size (address
, &family
);
2192 if (len
== 0 || datagram_address
[channel
].len
!= len
)
2194 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2200 static const struct socket_options
{
2201 /* The name of this option. Should be lowercase version of option
2202 name without SO_ prefix. */
2204 /* Option level SOL_... */
2206 /* Option number SO_... */
2208 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2209 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2210 } socket_options
[] =
2212 #ifdef SO_BINDTODEVICE
2213 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2216 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2219 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2222 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2225 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2228 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2231 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2234 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2236 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2239 /* Set option OPT to value VAL on socket S.
2241 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2242 Signals an error if setting a known option fails.
2246 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2249 const struct socket_options
*sopt
;
2254 name
= SSDATA (SYMBOL_NAME (opt
));
2255 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2256 if (strcmp (name
, sopt
->name
) == 0)
2259 switch (sopt
->opttype
)
2264 optval
= NILP (val
) ? 0 : 1;
2265 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2266 &optval
, sizeof (optval
));
2273 if (TYPE_RANGED_INTEGERP (int, val
))
2274 optval
= XINT (val
);
2276 error ("Bad option value for %s", name
);
2277 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2278 &optval
, sizeof (optval
));
2282 #ifdef SO_BINDTODEVICE
2285 char devname
[IFNAMSIZ
+1];
2287 /* This is broken, at least in the Linux 2.4 kernel.
2288 To unbind, the arg must be a zero integer, not the empty string.
2289 This should work on all systems. KFS. 2003-09-23. */
2290 memset (devname
, 0, sizeof devname
);
2293 char *arg
= SSDATA (val
);
2294 int len
= min (strlen (arg
), IFNAMSIZ
);
2295 memcpy (devname
, arg
, len
);
2297 else if (!NILP (val
))
2298 error ("Bad option value for %s", name
);
2299 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2308 struct linger linger
;
2311 linger
.l_linger
= 0;
2312 if (TYPE_RANGED_INTEGERP (int, val
))
2313 linger
.l_linger
= XINT (val
);
2315 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2316 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2317 &linger
, sizeof (linger
));
2328 int setsockopt_errno
= errno
;
2329 report_file_errno ("Cannot set network option", list2 (opt
, val
),
2333 return (1 << sopt
->optbit
);
2337 DEFUN ("set-network-process-option",
2338 Fset_network_process_option
, Sset_network_process_option
,
2340 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2341 See `make-network-process' for a list of options and values.
2342 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2343 OPTION is not a supported option, return nil instead; otherwise return t. */)
2344 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2347 struct Lisp_Process
*p
;
2349 CHECK_PROCESS (process
);
2350 p
= XPROCESS (process
);
2351 if (!NETCONN1_P (p
))
2352 error ("Process is not a network process");
2356 error ("Process is not running");
2358 if (set_socket_option (s
, option
, value
))
2360 pset_childp (p
, Fplist_put (p
->childp
, option
, value
));
2364 if (NILP (no_error
))
2365 error ("Unknown or unsupported option");
2371 DEFUN ("serial-process-configure",
2372 Fserial_process_configure
,
2373 Sserial_process_configure
,
2375 doc
: /* Configure speed, bytesize, etc. of a serial process.
2377 Arguments are specified as keyword/argument pairs. Attributes that
2378 are not given are re-initialized from the process's current
2379 configuration (available via the function `process-contact') or set to
2380 reasonable default values. The following arguments are defined:
2386 -- Any of these arguments can be given to identify the process that is
2387 to be configured. If none of these arguments is given, the current
2388 buffer's process is used.
2390 :speed SPEED -- SPEED is the speed of the serial port in bits per
2391 second, also called baud rate. Any value can be given for SPEED, but
2392 most serial ports work only at a few defined values between 1200 and
2393 115200, with 9600 being the most common value. If SPEED is nil, the
2394 serial port is not configured any further, i.e., all other arguments
2395 are ignored. This may be useful for special serial ports such as
2396 Bluetooth-to-serial converters which can only be configured through AT
2397 commands. A value of nil for SPEED can be used only when passed
2398 through `make-serial-process' or `serial-term'.
2400 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2401 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2403 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2404 `odd' (use odd parity), or the symbol `even' (use even parity). If
2405 PARITY is not given, no parity is used.
2407 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2408 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2409 is not given or nil, 1 stopbit is used.
2411 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2412 flowcontrol to be used, which is either nil (don't use flowcontrol),
2413 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2414 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2415 flowcontrol is used.
2417 `serial-process-configure' is called by `make-serial-process' for the
2418 initial configuration of the serial port.
2422 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2424 \(serial-process-configure
2425 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2427 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2429 usage: (serial-process-configure &rest ARGS) */)
2430 (ptrdiff_t nargs
, Lisp_Object
*args
)
2432 struct Lisp_Process
*p
;
2433 Lisp_Object contact
= Qnil
;
2434 Lisp_Object proc
= Qnil
;
2435 struct gcpro gcpro1
;
2437 contact
= Flist (nargs
, args
);
2440 proc
= Fplist_get (contact
, QCprocess
);
2442 proc
= Fplist_get (contact
, QCname
);
2444 proc
= Fplist_get (contact
, QCbuffer
);
2446 proc
= Fplist_get (contact
, QCport
);
2447 proc
= get_process (proc
);
2448 p
= XPROCESS (proc
);
2449 if (!EQ (p
->type
, Qserial
))
2450 error ("Not a serial process");
2452 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2458 serial_configure (p
, contact
);
2464 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2466 doc
: /* Create and return a serial port process.
2468 In Emacs, serial port connections are represented by process objects,
2469 so input and output work as for subprocesses, and `delete-process'
2470 closes a serial port connection. However, a serial process has no
2471 process id, it cannot be signaled, and the status codes are different
2472 from normal processes.
2474 `make-serial-process' creates a process and a buffer, on which you
2475 probably want to use `process-send-string'. Try \\[serial-term] for
2476 an interactive terminal. See below for examples.
2478 Arguments are specified as keyword/argument pairs. The following
2479 arguments are defined:
2481 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2482 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2483 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2484 the backslashes in strings).
2486 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2487 which this function calls.
2489 :name NAME -- NAME is the name of the process. If NAME is not given,
2490 the value of PORT is used.
2492 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2493 with the process. Process output goes at the end of that buffer,
2494 unless you specify an output stream or filter function to handle the
2495 output. If BUFFER is not given, the value of NAME is used.
2497 :coding CODING -- If CODING is a symbol, it specifies the coding
2498 system used for both reading and writing for this process. If CODING
2499 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2500 ENCODING is used for writing.
2502 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2503 the process is running. If BOOL is not given, query before exiting.
2505 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2506 In the stopped state, a serial process does not accept incoming data,
2507 but you can send outgoing data. The stopped state is cleared by
2508 `continue-process' and set by `stop-process'.
2510 :filter FILTER -- Install FILTER as the process filter.
2512 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2514 :plist PLIST -- Install PLIST as the initial plist of the process.
2520 -- This function calls `serial-process-configure' to handle these
2523 The original argument list, possibly modified by later configuration,
2524 is available via the function `process-contact'.
2528 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2530 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2532 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2534 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2536 usage: (make-serial-process &rest ARGS) */)
2537 (ptrdiff_t nargs
, Lisp_Object
*args
)
2540 Lisp_Object proc
, contact
, port
;
2541 struct Lisp_Process
*p
;
2542 struct gcpro gcpro1
;
2543 Lisp_Object name
, buffer
;
2544 Lisp_Object tem
, val
;
2545 ptrdiff_t specpdl_count
;
2550 contact
= Flist (nargs
, args
);
2553 port
= Fplist_get (contact
, QCport
);
2555 error ("No port specified");
2556 CHECK_STRING (port
);
2558 if (NILP (Fplist_member (contact
, QCspeed
)))
2559 error (":speed not specified");
2560 if (!NILP (Fplist_get (contact
, QCspeed
)))
2561 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2563 name
= Fplist_get (contact
, QCname
);
2566 CHECK_STRING (name
);
2567 proc
= make_process (name
);
2569 record_unwind_protect_1 (remove_process
, proc
, false);
2570 p
= XPROCESS (proc
);
2572 fd
= serial_open (port
);
2573 p
->open_fd
[SUBPROCESS_STDIN
] = fd
;
2576 if (fd
> max_process_desc
)
2577 max_process_desc
= fd
;
2578 chan_process
[fd
] = proc
;
2580 buffer
= Fplist_get (contact
, QCbuffer
);
2583 buffer
= Fget_buffer_create (buffer
);
2584 pset_buffer (p
, buffer
);
2586 pset_childp (p
, contact
);
2587 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
2588 pset_type (p
, Qserial
);
2589 pset_sentinel (p
, Fplist_get (contact
, QCsentinel
));
2590 pset_filter (p
, Fplist_get (contact
, QCfilter
));
2592 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2593 p
->kill_without_query
= 1;
2594 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2595 pset_command (p
, Qt
);
2596 eassert (! p
->pty_flag
);
2598 if (!EQ (p
->command
, Qt
))
2600 FD_SET (fd
, &input_wait_mask
);
2601 FD_SET (fd
, &non_keyboard_wait_mask
);
2604 if (BUFFERP (buffer
))
2606 set_marker_both (p
->mark
, buffer
,
2607 BUF_ZV (XBUFFER (buffer
)),
2608 BUF_ZV_BYTE (XBUFFER (buffer
)));
2611 tem
= Fplist_member (contact
, QCcoding
);
2612 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2618 val
= XCAR (XCDR (tem
));
2622 else if (!NILP (Vcoding_system_for_read
))
2623 val
= Vcoding_system_for_read
;
2624 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2625 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2627 pset_decode_coding_system (p
, val
);
2632 val
= XCAR (XCDR (tem
));
2636 else if (!NILP (Vcoding_system_for_write
))
2637 val
= Vcoding_system_for_write
;
2638 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
2639 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
2641 pset_encode_coding_system (p
, val
);
2643 setup_process_coding_systems (proc
);
2644 pset_decoding_buf (p
, empty_unibyte_string
);
2645 p
->decoding_carryover
= 0;
2646 pset_encoding_buf (p
, empty_unibyte_string
);
2647 p
->inherit_coding_system_flag
2648 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2650 Fserial_process_configure (nargs
, args
);
2658 /* Create a network stream/datagram client/server process. Treated
2659 exactly like a normal process when reading and writing. Primary
2660 differences are in status display and process deletion. A network
2661 connection has no PID; you cannot signal it. All you can do is
2662 stop/continue it and deactivate/close it via delete-process */
2664 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2666 doc
: /* Create and return a network server or client process.
2668 In Emacs, network connections are represented by process objects, so
2669 input and output work as for subprocesses and `delete-process' closes
2670 a network connection. However, a network process has no process id,
2671 it cannot be signaled, and the status codes are different from normal
2674 Arguments are specified as keyword/argument pairs. The following
2675 arguments are defined:
2677 :name NAME -- NAME is name for process. It is modified if necessary
2680 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2681 with the process. Process output goes at end of that buffer, unless
2682 you specify an output stream or filter function to handle the output.
2683 BUFFER may be also nil, meaning that this process is not associated
2686 :host HOST -- HOST is name of the host to connect to, or its IP
2687 address. The symbol `local' specifies the local host. If specified
2688 for a server process, it must be a valid name or address for the local
2689 host, and only clients connecting to that address will be accepted.
2691 :service SERVICE -- SERVICE is name of the service desired, or an
2692 integer specifying a port number to connect to. If SERVICE is t,
2693 a random port number is selected for the server. (If Emacs was
2694 compiled with getaddrinfo, a port number can also be specified as a
2695 string, e.g. "80", as well as an integer. This is not portable.)
2697 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2698 stream type connection, `datagram' creates a datagram type connection,
2699 `seqpacket' creates a reliable datagram connection.
2701 :family FAMILY -- FAMILY is the address (and protocol) family for the
2702 service specified by HOST and SERVICE. The default (nil) is to use
2703 whatever address family (IPv4 or IPv6) that is defined for the host
2704 and port number specified by HOST and SERVICE. Other address families
2706 local -- for a local (i.e. UNIX) address specified by SERVICE.
2707 ipv4 -- use IPv4 address family only.
2708 ipv6 -- use IPv6 address family only.
2710 :local ADDRESS -- ADDRESS is the local address used for the connection.
2711 This parameter is ignored when opening a client process. When specified
2712 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2714 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2715 connection. This parameter is ignored when opening a stream server
2716 process. For a datagram server process, it specifies the initial
2717 setting of the remote datagram address. When specified for a client
2718 process, the FAMILY, HOST, and SERVICE args are ignored.
2720 The format of ADDRESS depends on the address family:
2721 - An IPv4 address is represented as an vector of integers [A B C D P]
2722 corresponding to numeric IP address A.B.C.D and port number P.
2723 - A local address is represented as a string with the address in the
2724 local address space.
2725 - An "unsupported family" address is represented by a cons (F . AV)
2726 where F is the family number and AV is a vector containing the socket
2727 address data with one element per address data byte. Do not rely on
2728 this format in portable code, as it may depend on implementation
2729 defined constants, data sizes, and data structure alignment.
2731 :coding CODING -- If CODING is a symbol, it specifies the coding
2732 system used for both reading and writing for this process. If CODING
2733 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2734 ENCODING is used for writing.
2736 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2737 return without waiting for the connection to complete; instead, the
2738 sentinel function will be called with second arg matching "open" (if
2739 successful) or "failed" when the connect completes. Default is to use
2740 a blocking connect (i.e. wait) for stream type connections.
2742 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2743 running when Emacs is exited.
2745 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2746 In the stopped state, a server process does not accept new
2747 connections, and a client process does not handle incoming traffic.
2748 The stopped state is cleared by `continue-process' and set by
2751 :filter FILTER -- Install FILTER as the process filter.
2753 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2754 process filter are multibyte, otherwise they are unibyte.
2755 If this keyword is not specified, the strings are multibyte if
2756 the default value of `enable-multibyte-characters' is non-nil.
2758 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2760 :log LOG -- Install LOG as the server process log function. This
2761 function is called when the server accepts a network connection from a
2762 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2763 is the server process, CLIENT is the new process for the connection,
2764 and MESSAGE is a string.
2766 :plist PLIST -- Install PLIST as the new process's initial plist.
2768 :server QLEN -- if QLEN is non-nil, create a server process for the
2769 specified FAMILY, SERVICE, and connection type (stream or datagram).
2770 If QLEN is an integer, it is used as the max. length of the server's
2771 pending connection queue (also known as the backlog); the default
2772 queue length is 5. Default is to create a client process.
2774 The following network options can be specified for this connection:
2776 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2777 :dontroute BOOL -- Only send to directly connected hosts.
2778 :keepalive BOOL -- Send keep-alive messages on network stream.
2779 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2780 :oobinline BOOL -- Place out-of-band data in receive data stream.
2781 :priority INT -- Set protocol defined priority for sent packets.
2782 :reuseaddr BOOL -- Allow reusing a recently used local address
2783 (this is allowed by default for a server process).
2784 :bindtodevice NAME -- bind to interface NAME. Using this may require
2785 special privileges on some systems.
2787 Consult the relevant system programmer's manual pages for more
2788 information on using these options.
2791 A server process will listen for and accept connections from clients.
2792 When a client connection is accepted, a new network process is created
2793 for the connection with the following parameters:
2795 - The client's process name is constructed by concatenating the server
2796 process's NAME and a client identification string.
2797 - If the FILTER argument is non-nil, the client process will not get a
2798 separate process buffer; otherwise, the client's process buffer is a newly
2799 created buffer named after the server process's BUFFER name or process
2800 NAME concatenated with the client identification string.
2801 - The connection type and the process filter and sentinel parameters are
2802 inherited from the server process's TYPE, FILTER and SENTINEL.
2803 - The client process's contact info is set according to the client's
2804 addressing information (typically an IP address and a port number).
2805 - The client process's plist is initialized from the server's plist.
2807 Notice that the FILTER and SENTINEL args are never used directly by
2808 the server process. Also, the BUFFER argument is not used directly by
2809 the server process, but via the optional :log function, accepted (and
2810 failed) connections may be logged in the server process's buffer.
2812 The original argument list, modified with the actual connection
2813 information, is available via the `process-contact' function.
2815 usage: (make-network-process &rest ARGS) */)
2816 (ptrdiff_t nargs
, Lisp_Object
*args
)
2819 Lisp_Object contact
;
2820 struct Lisp_Process
*p
;
2821 #ifdef HAVE_GETADDRINFO
2822 struct addrinfo ai
, *res
, *lres
;
2823 struct addrinfo hints
;
2824 const char *portstring
;
2826 #else /* HAVE_GETADDRINFO */
2827 struct _emacs_addrinfo
2833 struct sockaddr
*ai_addr
;
2834 struct _emacs_addrinfo
*ai_next
;
2836 #endif /* HAVE_GETADDRINFO */
2837 struct sockaddr_in address_in
;
2838 #ifdef HAVE_LOCAL_SOCKETS
2839 struct sockaddr_un address_un
;
2844 int s
= -1, outch
, inch
;
2845 struct gcpro gcpro1
;
2846 Lisp_Object colon_address
; /* Either QClocal or QCremote. */
2848 Lisp_Object name
, buffer
, host
, service
, address
;
2849 Lisp_Object filter
, sentinel
;
2850 bool is_non_blocking_client
= 0;
2861 /* Save arguments for process-contact and clone-process. */
2862 contact
= Flist (nargs
, args
);
2866 /* Ensure socket support is loaded if available. */
2867 init_winsock (TRUE
);
2870 /* :type TYPE (nil: stream, datagram */
2871 tem
= Fplist_get (contact
, QCtype
);
2873 socktype
= SOCK_STREAM
;
2874 #ifdef DATAGRAM_SOCKETS
2875 else if (EQ (tem
, Qdatagram
))
2876 socktype
= SOCK_DGRAM
;
2878 #ifdef HAVE_SEQPACKET
2879 else if (EQ (tem
, Qseqpacket
))
2880 socktype
= SOCK_SEQPACKET
;
2883 error ("Unsupported connection type");
2886 tem
= Fplist_get (contact
, QCserver
);
2889 /* Don't support network sockets when non-blocking mode is
2890 not available, since a blocked Emacs is not useful. */
2892 if (TYPE_RANGED_INTEGERP (int, tem
))
2893 backlog
= XINT (tem
);
2896 /* Make colon_address an alias for :local (server) or :remote (client). */
2897 colon_address
= is_server
? QClocal
: QCremote
;
2900 if (!is_server
&& socktype
!= SOCK_DGRAM
2901 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2903 #ifndef NON_BLOCKING_CONNECT
2904 error ("Non-blocking connect not supported");
2906 is_non_blocking_client
= 1;
2910 name
= Fplist_get (contact
, QCname
);
2911 buffer
= Fplist_get (contact
, QCbuffer
);
2912 filter
= Fplist_get (contact
, QCfilter
);
2913 sentinel
= Fplist_get (contact
, QCsentinel
);
2915 CHECK_STRING (name
);
2917 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2918 ai
.ai_socktype
= socktype
;
2923 /* :local ADDRESS or :remote ADDRESS */
2924 address
= Fplist_get (contact
, colon_address
);
2925 if (!NILP (address
))
2927 host
= service
= Qnil
;
2929 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2930 error ("Malformed :address");
2931 ai
.ai_family
= family
;
2932 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2933 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2937 /* :family FAMILY -- nil (for Inet), local, or integer. */
2938 tem
= Fplist_get (contact
, QCfamily
);
2941 #if defined (HAVE_GETADDRINFO) && defined (AF_INET6)
2947 #ifdef HAVE_LOCAL_SOCKETS
2948 else if (EQ (tem
, Qlocal
))
2952 else if (EQ (tem
, Qipv6
))
2955 else if (EQ (tem
, Qipv4
))
2957 else if (TYPE_RANGED_INTEGERP (int, tem
))
2958 family
= XINT (tem
);
2960 error ("Unknown address family");
2962 ai
.ai_family
= family
;
2964 /* :service SERVICE -- string, integer (port number), or t (random port). */
2965 service
= Fplist_get (contact
, QCservice
);
2967 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2968 host
= Fplist_get (contact
, QChost
);
2971 if (EQ (host
, Qlocal
))
2972 /* Depending on setup, "localhost" may map to different IPv4 and/or
2973 IPv6 addresses, so it's better to be explicit. (Bug#6781) */
2974 host
= build_string ("127.0.0.1");
2975 CHECK_STRING (host
);
2978 #ifdef HAVE_LOCAL_SOCKETS
2979 if (family
== AF_LOCAL
)
2983 message (":family local ignores the :host \"%s\" property",
2985 contact
= Fplist_put (contact
, QChost
, Qnil
);
2988 CHECK_STRING (service
);
2989 memset (&address_un
, 0, sizeof address_un
);
2990 address_un
.sun_family
= AF_LOCAL
;
2991 if (sizeof address_un
.sun_path
<= SBYTES (service
))
2992 error ("Service name too long");
2993 strcpy (address_un
.sun_path
, SSDATA (service
));
2994 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
2995 ai
.ai_addrlen
= sizeof address_un
;
3000 /* Slow down polling to every ten seconds.
3001 Some kernels have a bug which causes retrying connect to fail
3002 after a connect. Polling can interfere with gethostbyname too. */
3003 #ifdef POLL_FOR_INPUT
3004 if (socktype
!= SOCK_DGRAM
)
3006 record_unwind_protect_void (run_all_atimers
);
3007 bind_polling_period (10);
3011 #ifdef HAVE_GETADDRINFO
3012 /* If we have a host, use getaddrinfo to resolve both host and service.
3013 Otherwise, use getservbyname to lookup the service. */
3017 /* SERVICE can either be a string or int.
3018 Convert to a C string for later use by getaddrinfo. */
3019 if (EQ (service
, Qt
))
3021 else if (INTEGERP (service
))
3023 sprintf (portbuf
, "%"pI
"d", XINT (service
));
3024 portstring
= portbuf
;
3028 CHECK_STRING (service
);
3029 portstring
= SSDATA (service
);
3034 memset (&hints
, 0, sizeof (hints
));
3036 hints
.ai_family
= family
;
3037 hints
.ai_socktype
= socktype
;
3038 hints
.ai_protocol
= 0;
3040 #ifdef HAVE_RES_INIT
3044 ret
= getaddrinfo (SSDATA (host
), portstring
, &hints
, &res
);
3046 #ifdef HAVE_GAI_STRERROR
3047 error ("%s/%s %s", SSDATA (host
), portstring
, gai_strerror (ret
));
3049 error ("%s/%s getaddrinfo error %d", SSDATA (host
), portstring
, ret
);
3055 #endif /* HAVE_GETADDRINFO */
3057 /* We end up here if getaddrinfo is not defined, or in case no hostname
3058 has been specified (e.g. for a local server process). */
3060 if (EQ (service
, Qt
))
3062 else if (INTEGERP (service
))
3063 port
= htons ((unsigned short) XINT (service
));
3066 struct servent
*svc_info
;
3067 CHECK_STRING (service
);
3068 svc_info
= getservbyname (SSDATA (service
),
3069 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3071 error ("Unknown service: %s", SDATA (service
));
3072 port
= svc_info
->s_port
;
3075 memset (&address_in
, 0, sizeof address_in
);
3076 address_in
.sin_family
= family
;
3077 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3078 address_in
.sin_port
= port
;
3080 #ifndef HAVE_GETADDRINFO
3083 struct hostent
*host_info_ptr
;
3085 /* gethostbyname may fail with TRY_AGAIN, but we don't honor that,
3086 as it may `hang' Emacs for a very long time. */
3090 #ifdef HAVE_RES_INIT
3094 host_info_ptr
= gethostbyname (SDATA (host
));
3099 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3100 host_info_ptr
->h_length
);
3101 family
= host_info_ptr
->h_addrtype
;
3102 address_in
.sin_family
= family
;
3105 /* Attempt to interpret host as numeric inet address */
3107 unsigned long numeric_addr
;
3108 numeric_addr
= inet_addr (SSDATA (host
));
3109 if (numeric_addr
== -1)
3110 error ("Unknown host \"%s\"", SDATA (host
));
3112 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3113 sizeof (address_in
.sin_addr
));
3117 #endif /* not HAVE_GETADDRINFO */
3119 ai
.ai_family
= family
;
3120 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3121 ai
.ai_addrlen
= sizeof address_in
;
3125 /* Do this in case we never enter the for-loop below. */
3129 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3138 s
= socket (lres
->ai_family
, lres
->ai_socktype
| SOCK_CLOEXEC
,
3146 #ifdef DATAGRAM_SOCKETS
3147 if (!is_server
&& socktype
== SOCK_DGRAM
)
3149 #endif /* DATAGRAM_SOCKETS */
3151 #ifdef NON_BLOCKING_CONNECT
3152 if (is_non_blocking_client
)
3154 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3165 /* Make us close S if quit. */
3166 record_unwind_protect_int_1 (close_file_unwind
, s
, false);
3168 /* Parse network options in the arg list.
3169 We simply ignore anything which isn't a known option (including other keywords).
3170 An error is signaled if setting a known option fails. */
3171 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3172 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3176 /* Configure as a server socket. */
3178 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3179 explicit :reuseaddr key to override this. */
3180 #ifdef HAVE_LOCAL_SOCKETS
3181 if (family
!= AF_LOCAL
)
3183 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3186 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3187 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3190 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3191 report_file_error ("Cannot bind server socket", Qnil
);
3193 #ifdef HAVE_GETSOCKNAME
3194 if (EQ (service
, Qt
))
3196 struct sockaddr_in sa1
;
3197 socklen_t len1
= sizeof (sa1
);
3198 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3200 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3201 service
= make_number (ntohs (sa1
.sin_port
));
3202 contact
= Fplist_put (contact
, QCservice
, service
);
3207 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3208 report_file_error ("Cannot listen on server socket", Qnil
);
3216 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3219 if (ret
== 0 || xerrno
== EISCONN
)
3221 /* The unwind-protect will be discarded afterwards.
3222 Likewise for immediate_quit. */
3226 #ifdef NON_BLOCKING_CONNECT
3228 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3232 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3239 if (xerrno
== EINTR
)
3241 /* Unlike most other syscalls connect() cannot be called
3242 again. (That would return EALREADY.) The proper way to
3243 wait for completion is pselect(). */
3251 sc
= pselect (s
+ 1, NULL
, &fdset
, NULL
, NULL
, NULL
);
3257 report_file_error ("Failed select", Qnil
);
3261 len
= sizeof xerrno
;
3262 eassert (FD_ISSET (s
, &fdset
));
3263 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) < 0)
3264 report_file_error ("Failed getsockopt", Qnil
);
3266 report_file_errno ("Failed connect", Qnil
, xerrno
);
3269 #endif /* !WINDOWSNT */
3279 if (xerrno
== EINTR
)
3286 #ifdef DATAGRAM_SOCKETS
3287 if (socktype
== SOCK_DGRAM
)
3289 if (datagram_address
[s
].sa
)
3291 datagram_address
[s
].sa
= xmalloc (lres
->ai_addrlen
);
3292 datagram_address
[s
].len
= lres
->ai_addrlen
;
3296 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3297 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3300 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3301 if (rlen
!= 0 && rfamily
== lres
->ai_family
3302 && rlen
== lres
->ai_addrlen
)
3303 conv_lisp_to_sockaddr (rfamily
, remote
,
3304 datagram_address
[s
].sa
, rlen
);
3308 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3311 contact
= Fplist_put (contact
, colon_address
,
3312 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3313 #ifdef HAVE_GETSOCKNAME
3316 struct sockaddr_in sa1
;
3317 socklen_t len1
= sizeof (sa1
);
3318 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3319 contact
= Fplist_put (contact
, QClocal
,
3320 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3327 #ifdef HAVE_GETADDRINFO
3338 /* If non-blocking got this far - and failed - assume non-blocking is
3339 not supported after all. This is probably a wrong assumption, but
3340 the normal blocking calls to open-network-stream handles this error
3342 if (is_non_blocking_client
)
3349 report_file_errno ((is_server
3350 ? "make server process failed"
3351 : "make client process failed"),
3359 buffer
= Fget_buffer_create (buffer
);
3360 proc
= make_process (name
);
3362 chan_process
[inch
] = proc
;
3364 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3366 p
= XPROCESS (proc
);
3368 pset_childp (p
, contact
);
3369 pset_plist (p
, Fcopy_sequence (Fplist_get (contact
, QCplist
)));
3370 pset_type (p
, Qnetwork
);
3372 pset_buffer (p
, buffer
);
3373 pset_sentinel (p
, sentinel
);
3374 pset_filter (p
, filter
);
3375 pset_log (p
, Fplist_get (contact
, QClog
));
3376 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3377 p
->kill_without_query
= 1;
3378 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3379 pset_command (p
, Qt
);
3382 p
->open_fd
[SUBPROCESS_STDIN
] = inch
;
3388 /* Unwind bind_polling_period and request_sigio. */
3391 if (is_server
&& socktype
!= SOCK_DGRAM
)
3392 pset_status (p
, Qlisten
);
3394 /* Make the process marker point into the process buffer (if any). */
3395 if (BUFFERP (buffer
))
3396 set_marker_both (p
->mark
, buffer
,
3397 BUF_ZV (XBUFFER (buffer
)),
3398 BUF_ZV_BYTE (XBUFFER (buffer
)));
3400 #ifdef NON_BLOCKING_CONNECT
3401 if (is_non_blocking_client
)
3403 /* We may get here if connect did succeed immediately. However,
3404 in that case, we still need to signal this like a non-blocking
3406 pset_status (p
, Qconnect
);
3407 if (!FD_ISSET (inch
, &connect_wait_mask
))
3409 FD_SET (inch
, &connect_wait_mask
);
3410 FD_SET (inch
, &write_mask
);
3411 num_pending_connects
++;
3416 /* A server may have a client filter setting of Qt, but it must
3417 still listen for incoming connects unless it is stopped. */
3418 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3419 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3421 FD_SET (inch
, &input_wait_mask
);
3422 FD_SET (inch
, &non_keyboard_wait_mask
);
3425 if (inch
> max_process_desc
)
3426 max_process_desc
= inch
;
3428 tem
= Fplist_member (contact
, QCcoding
);
3429 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3430 tem
= Qnil
; /* No error message (too late!). */
3433 /* Setup coding systems for communicating with the network stream. */
3434 struct gcpro gcpro1
;
3435 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3436 Lisp_Object coding_systems
= Qt
;
3437 Lisp_Object fargs
[5], val
;
3441 val
= XCAR (XCDR (tem
));
3445 else if (!NILP (Vcoding_system_for_read
))
3446 val
= Vcoding_system_for_read
;
3447 else if ((!NILP (buffer
) && NILP (BVAR (XBUFFER (buffer
), enable_multibyte_characters
)))
3448 || (NILP (buffer
) && NILP (BVAR (&buffer_defaults
, enable_multibyte_characters
))))
3449 /* We dare not decode end-of-line format by setting VAL to
3450 Qraw_text, because the existing Emacs Lisp libraries
3451 assume that they receive bare code including a sequence of
3456 if (NILP (host
) || NILP (service
))
3457 coding_systems
= Qnil
;
3460 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3461 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3463 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3466 if (CONSP (coding_systems
))
3467 val
= XCAR (coding_systems
);
3468 else if (CONSP (Vdefault_process_coding_system
))
3469 val
= XCAR (Vdefault_process_coding_system
);
3473 pset_decode_coding_system (p
, val
);
3477 val
= XCAR (XCDR (tem
));
3481 else if (!NILP (Vcoding_system_for_write
))
3482 val
= Vcoding_system_for_write
;
3483 else if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
3487 if (EQ (coding_systems
, Qt
))
3489 if (NILP (host
) || NILP (service
))
3490 coding_systems
= Qnil
;
3493 fargs
[0] = Qopen_network_stream
, fargs
[1] = name
,
3494 fargs
[2] = buffer
, fargs
[3] = host
, fargs
[4] = service
;
3496 coding_systems
= Ffind_operation_coding_system (5, fargs
);
3500 if (CONSP (coding_systems
))
3501 val
= XCDR (coding_systems
);
3502 else if (CONSP (Vdefault_process_coding_system
))
3503 val
= XCDR (Vdefault_process_coding_system
);
3507 pset_encode_coding_system (p
, val
);
3509 setup_process_coding_systems (proc
);
3511 pset_decoding_buf (p
, empty_unibyte_string
);
3512 p
->decoding_carryover
= 0;
3513 pset_encoding_buf (p
, empty_unibyte_string
);
3515 p
->inherit_coding_system_flag
3516 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3523 #ifdef HAVE_NET_IF_H
3527 network_interface_list (void)
3529 struct ifconf ifconf
;
3530 struct ifreq
*ifreq
;
3532 ptrdiff_t buf_size
= 512;
3534 Lisp_Object res
= Qnil
;
3537 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3541 record_unwind_protect_int (close_file_unwind
, s
);
3545 buf
= xpalloc (buf
, &buf_size
, 1, INT_MAX
, 1);
3546 ifconf
.ifc_buf
= buf
;
3547 ifconf
.ifc_len
= buf_size
;
3548 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3556 while (ifconf
.ifc_len
== buf_size
);
3559 ifreq
= ifconf
.ifc_req
;
3560 while ((char *) ifreq
< (char *) ifconf
.ifc_req
+ ifconf
.ifc_len
)
3562 struct ifreq
*ifq
= ifreq
;
3563 #ifdef HAVE_STRUCT_IFREQ_IFR_ADDR_SA_LEN
3564 #define SIZEOF_IFREQ(sif) \
3565 ((sif)->ifr_addr.sa_len < sizeof (struct sockaddr) \
3566 ? sizeof (*(sif)) : sizeof ((sif)->ifr_name) + (sif)->ifr_addr.sa_len)
3568 int len
= SIZEOF_IFREQ (ifq
);
3570 int len
= sizeof (*ifreq
);
3572 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3573 ifreq
= (struct ifreq
*) ((char *) ifreq
+ len
);
3575 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3578 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3579 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3580 res
= Fcons (Fcons (build_string (namebuf
),
3581 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3582 sizeof (struct sockaddr
))),
3589 #endif /* SIOCGIFCONF */
3591 #if defined (SIOCGIFADDR) || defined (SIOCGIFHWADDR) || defined (SIOCGIFFLAGS)
3595 const char *flag_sym
;
3598 static const struct ifflag_def ifflag_table
[] = {
3602 #ifdef IFF_BROADCAST
3603 { IFF_BROADCAST
, "broadcast" },
3606 { IFF_DEBUG
, "debug" },
3609 { IFF_LOOPBACK
, "loopback" },
3611 #ifdef IFF_POINTOPOINT
3612 { IFF_POINTOPOINT
, "pointopoint" },
3615 { IFF_RUNNING
, "running" },
3618 { IFF_NOARP
, "noarp" },
3621 { IFF_PROMISC
, "promisc" },
3623 #ifdef IFF_NOTRAILERS
3624 #ifdef NS_IMPL_COCOA
3625 /* Really means smart, notrailers is obsolete */
3626 { IFF_NOTRAILERS
, "smart" },
3628 { IFF_NOTRAILERS
, "notrailers" },
3632 { IFF_ALLMULTI
, "allmulti" },
3635 { IFF_MASTER
, "master" },
3638 { IFF_SLAVE
, "slave" },
3640 #ifdef IFF_MULTICAST
3641 { IFF_MULTICAST
, "multicast" },
3644 { IFF_PORTSEL
, "portsel" },
3646 #ifdef IFF_AUTOMEDIA
3647 { IFF_AUTOMEDIA
, "automedia" },
3650 { IFF_DYNAMIC
, "dynamic" },
3653 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3656 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3659 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3662 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3665 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3671 network_interface_info (Lisp_Object ifname
)
3674 Lisp_Object res
= Qnil
;
3679 #if (! (defined SIOCGIFHWADDR && defined HAVE_STRUCT_IFREQ_IFR_HWADDR) \
3680 && defined HAVE_GETIFADDRS && defined LLADDR)
3681 struct ifaddrs
*ifap
;
3684 CHECK_STRING (ifname
);
3686 if (sizeof rq
.ifr_name
<= SBYTES (ifname
))
3687 error ("interface name too long");
3688 strcpy (rq
.ifr_name
, SSDATA (ifname
));
3690 s
= socket (AF_INET
, SOCK_STREAM
| SOCK_CLOEXEC
, 0);
3694 record_unwind_protect_int (close_file_unwind
, s
);
3697 #if defined (SIOCGIFFLAGS) && defined (HAVE_STRUCT_IFREQ_IFR_FLAGS)
3698 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3700 int flags
= rq
.ifr_flags
;
3701 const struct ifflag_def
*fp
;
3704 /* If flags is smaller than int (i.e. short) it may have the high bit set
3705 due to IFF_MULTICAST. In that case, sign extending it into
3707 if (flags
< 0 && sizeof (rq
.ifr_flags
) < sizeof (flags
))
3708 flags
= (unsigned short) rq
.ifr_flags
;
3711 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3713 if (flags
& fp
->flag_bit
)
3715 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3716 flags
-= fp
->flag_bit
;
3719 for (fnum
= 0; flags
&& fnum
< 32; flags
>>= 1, fnum
++)
3723 elt
= Fcons (make_number (fnum
), elt
);
3728 res
= Fcons (elt
, res
);
3731 #if defined (SIOCGIFHWADDR) && defined (HAVE_STRUCT_IFREQ_IFR_HWADDR)
3732 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3734 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3735 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3739 for (n
= 0; n
< 6; n
++)
3740 p
->contents
[n
] = make_number (((unsigned char *)
3741 &rq
.ifr_hwaddr
.sa_data
[0])
3743 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3745 #elif defined (HAVE_GETIFADDRS) && defined (LLADDR)
3746 if (getifaddrs (&ifap
) != -1)
3748 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3749 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3752 for (it
= ifap
; it
!= NULL
; it
= it
->ifa_next
)
3754 struct sockaddr_dl
*sdl
= (struct sockaddr_dl
*) it
->ifa_addr
;
3755 unsigned char linkaddr
[6];
3758 if (it
->ifa_addr
->sa_family
!= AF_LINK
3759 || strcmp (it
->ifa_name
, SSDATA (ifname
)) != 0
3760 || sdl
->sdl_alen
!= 6)
3763 memcpy (linkaddr
, LLADDR (sdl
), sdl
->sdl_alen
);
3764 for (n
= 0; n
< 6; n
++)
3765 p
->contents
[n
] = make_number (linkaddr
[n
]);
3767 elt
= Fcons (make_number (it
->ifa_addr
->sa_family
), hwaddr
);
3771 #ifdef HAVE_FREEIFADDRS
3775 #endif /* HAVE_GETIFADDRS && LLADDR */
3777 res
= Fcons (elt
, res
);
3780 #if defined (SIOCGIFNETMASK) && (defined (HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined (HAVE_STRUCT_IFREQ_IFR_ADDR))
3781 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3784 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3785 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3787 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3791 res
= Fcons (elt
, res
);
3794 #if defined (SIOCGIFBRDADDR) && defined (HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3795 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3798 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3801 res
= Fcons (elt
, res
);
3804 #if defined (SIOCGIFADDR) && defined (HAVE_STRUCT_IFREQ_IFR_ADDR)
3805 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3808 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3811 res
= Fcons (elt
, res
);
3813 Lisp_Object tem0
= any
? res
: Qnil
;
3817 #endif /* !SIOCGIFADDR && !SIOCGIFHWADDR && !SIOCGIFFLAGS */
3818 #endif /* defined (HAVE_NET_IF_H) */
3820 DEFUN ("network-interface-list", Fnetwork_interface_list
,
3821 Snetwork_interface_list
, 0, 0, 0,
3822 doc
: /* Return an alist of all network interfaces and their network address.
3823 Each element is a cons, the car of which is a string containing the
3824 interface name, and the cdr is the network address in internal
3825 format; see the description of ADDRESS in `make-network-process'.
3827 If the information is not available, return nil. */)
3830 #if (defined HAVE_NET_IF_H && defined SIOCGIFCONF) || defined WINDOWSNT
3831 return network_interface_list ();
3837 DEFUN ("network-interface-info", Fnetwork_interface_info
,
3838 Snetwork_interface_info
, 1, 1, 0,
3839 doc
: /* Return information about network interface named IFNAME.
3840 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3841 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3842 NETMASK is the layer 3 network mask, HWADDR is the layer 2 address, and
3843 FLAGS is the current flags of the interface.
3845 Data that is unavailable is returned as nil. */)
3846 (Lisp_Object ifname
)
3848 #if ((defined HAVE_NET_IF_H \
3849 && (defined SIOCGIFADDR || defined SIOCGIFHWADDR \
3850 || defined SIOCGIFFLAGS)) \
3851 || defined WINDOWSNT)
3852 return network_interface_info (ifname
);
3859 /* Turn off input and output for process PROC. */
3862 deactivate_process (Lisp_Object proc
)
3865 struct Lisp_Process
*p
= XPROCESS (proc
);
3869 /* Delete GnuTLS structures in PROC, if any. */
3870 emacs_gnutls_deinit (proc
);
3871 #endif /* HAVE_GNUTLS */
3873 #ifdef ADAPTIVE_READ_BUFFERING
3874 if (p
->read_output_delay
> 0)
3876 if (--process_output_delay_count
< 0)
3877 process_output_delay_count
= 0;
3878 p
->read_output_delay
= 0;
3879 p
->read_output_skip
= 0;
3883 /* Beware SIGCHLD hereabouts. */
3885 for (i
= 0; i
< PROCESS_OPEN_FDS
; i
++)
3886 close_process_fd (&p
->open_fd
[i
]);
3888 inchannel
= p
->infd
;
3893 #ifdef DATAGRAM_SOCKETS
3894 if (DATAGRAM_CHAN_P (inchannel
))
3896 xfree (datagram_address
[inchannel
].sa
);
3897 datagram_address
[inchannel
].sa
= 0;
3898 datagram_address
[inchannel
].len
= 0;
3901 chan_process
[inchannel
] = Qnil
;
3902 FD_CLR (inchannel
, &input_wait_mask
);
3903 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3904 #ifdef NON_BLOCKING_CONNECT
3905 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3907 FD_CLR (inchannel
, &connect_wait_mask
);
3908 FD_CLR (inchannel
, &write_mask
);
3909 if (--num_pending_connects
< 0)
3913 if (inchannel
== max_process_desc
)
3915 /* We just closed the highest-numbered process input descriptor,
3916 so recompute the highest-numbered one now. */
3920 while (0 <= i
&& NILP (chan_process
[i
]));
3922 max_process_desc
= i
;
3928 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3930 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3931 It is given to their filter functions.
3932 Optional argument PROCESS means do not return until output has been
3933 received from PROCESS.
3935 Optional second argument SECONDS and third argument MILLISEC
3936 specify a timeout; return after that much time even if there is
3937 no subprocess output. If SECONDS is a floating point number,
3938 it specifies a fractional number of seconds to wait.
3939 The MILLISEC argument is obsolete and should be avoided.
3941 If optional fourth argument JUST-THIS-ONE is non-nil, accept output
3942 from PROCESS only, suspending reading output from other processes.
3943 If JUST-THIS-ONE is an integer, don't run any timers either.
3944 Return non-nil if we received any output from PROCESS (or, if PROCESS
3945 is nil, from any process) before the timeout expired. */)
3946 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
3951 if (! NILP (process
))
3952 CHECK_PROCESS (process
);
3954 just_this_one
= Qnil
;
3956 if (!NILP (millisec
))
3957 { /* Obsolete calling convention using integers rather than floats. */
3958 CHECK_NUMBER (millisec
);
3960 seconds
= make_float (XINT (millisec
) / 1000.0);
3963 CHECK_NUMBER (seconds
);
3964 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
3971 if (!NILP (seconds
))
3973 if (INTEGERP (seconds
))
3975 if (XINT (seconds
) > 0)
3977 secs
= XINT (seconds
);
3981 else if (FLOATP (seconds
))
3983 if (XFLOAT_DATA (seconds
) > 0)
3985 struct timespec t
= dtotimespec (XFLOAT_DATA (seconds
));
3986 secs
= min (t
.tv_sec
, WAIT_READING_MAX
);
3991 wrong_type_argument (Qnumberp
, seconds
);
3993 else if (! NILP (process
))
3997 ((wait_reading_process_output (secs
, nsecs
, 0, 0,
3999 !NILP (process
) ? XPROCESS (process
) : NULL
,
4000 NILP (just_this_one
) ? 0 :
4001 !INTEGERP (just_this_one
) ? 1 : -1)
4006 /* Accept a connection for server process SERVER on CHANNEL. */
4008 static EMACS_INT connect_counter
= 0;
4011 server_accept_connection (Lisp_Object server
, int channel
)
4013 Lisp_Object proc
, caller
, name
, buffer
;
4014 Lisp_Object contact
, host
, service
;
4015 struct Lisp_Process
*ps
= XPROCESS (server
);
4016 struct Lisp_Process
*p
;
4020 struct sockaddr_in in
;
4022 struct sockaddr_in6 in6
;
4024 #ifdef HAVE_LOCAL_SOCKETS
4025 struct sockaddr_un un
;
4028 socklen_t len
= sizeof saddr
;
4031 s
= accept4 (channel
, &saddr
.sa
, &len
, SOCK_CLOEXEC
);
4040 if (code
== EWOULDBLOCK
)
4044 if (!NILP (ps
->log
))
4045 call3 (ps
->log
, server
, Qnil
,
4046 concat3 (build_string ("accept failed with code"),
4047 Fnumber_to_string (make_number (code
)),
4048 build_string ("\n")));
4053 record_unwind_protect_int_1 (close_file_unwind
, s
, false);
4057 /* Setup a new process to handle the connection. */
4059 /* Generate a unique identification of the caller, and build contact
4060 information for this process. */
4063 switch (saddr
.sa
.sa_family
)
4067 Lisp_Object args
[5];
4068 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4069 args
[0] = build_string ("%d.%d.%d.%d");
4070 args
[1] = make_number (*ip
++);
4071 args
[2] = make_number (*ip
++);
4072 args
[3] = make_number (*ip
++);
4073 args
[4] = make_number (*ip
++);
4074 host
= Fformat (5, args
);
4075 service
= make_number (ntohs (saddr
.in
.sin_port
));
4077 args
[0] = build_string (" <%s:%d>");
4080 caller
= Fformat (3, args
);
4087 Lisp_Object args
[9];
4088 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4090 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4091 for (i
= 0; i
< 8; i
++)
4092 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4093 host
= Fformat (9, args
);
4094 service
= make_number (ntohs (saddr
.in
.sin_port
));
4096 args
[0] = build_string (" <[%s]:%d>");
4099 caller
= Fformat (3, args
);
4104 #ifdef HAVE_LOCAL_SOCKETS
4108 caller
= Fnumber_to_string (make_number (connect_counter
));
4109 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4113 /* Create a new buffer name for this process if it doesn't have a
4114 filter. The new buffer name is based on the buffer name or
4115 process name of the server process concatenated with the caller
4118 if (!(EQ (ps
->filter
, Qinternal_default_process_filter
)
4119 || EQ (ps
->filter
, Qt
)))
4123 buffer
= ps
->buffer
;
4125 buffer
= Fbuffer_name (buffer
);
4130 buffer
= concat2 (buffer
, caller
);
4131 buffer
= Fget_buffer_create (buffer
);
4135 /* Generate a unique name for the new server process. Combine the
4136 server process name with the caller identification. */
4138 name
= concat2 (ps
->name
, caller
);
4139 proc
= make_process (name
);
4141 chan_process
[s
] = proc
;
4143 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4145 p
= XPROCESS (proc
);
4147 /* Build new contact information for this setup. */
4148 contact
= Fcopy_sequence (ps
->childp
);
4149 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4150 contact
= Fplist_put (contact
, QChost
, host
);
4151 if (!NILP (service
))
4152 contact
= Fplist_put (contact
, QCservice
, service
);
4153 contact
= Fplist_put (contact
, QCremote
,
4154 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4155 #ifdef HAVE_GETSOCKNAME
4157 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4158 contact
= Fplist_put (contact
, QClocal
,
4159 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4162 pset_childp (p
, contact
);
4163 pset_plist (p
, Fcopy_sequence (ps
->plist
));
4164 pset_type (p
, Qnetwork
);
4166 pset_buffer (p
, buffer
);
4167 pset_sentinel (p
, ps
->sentinel
);
4168 pset_filter (p
, ps
->filter
);
4169 pset_command (p
, Qnil
);
4174 p
->open_fd
[SUBPROCESS_STDIN
] = s
;
4177 pset_status (p
, Qrun
);
4179 /* Client processes for accepted connections are not stopped initially. */
4180 if (!EQ (p
->filter
, Qt
))
4182 FD_SET (s
, &input_wait_mask
);
4183 FD_SET (s
, &non_keyboard_wait_mask
);
4186 if (s
> max_process_desc
)
4187 max_process_desc
= s
;
4189 /* Setup coding system for new process based on server process.
4190 This seems to be the proper thing to do, as the coding system
4191 of the new process should reflect the settings at the time the
4192 server socket was opened; not the current settings. */
4194 pset_decode_coding_system (p
, ps
->decode_coding_system
);
4195 pset_encode_coding_system (p
, ps
->encode_coding_system
);
4196 setup_process_coding_systems (proc
);
4198 pset_decoding_buf (p
, empty_unibyte_string
);
4199 p
->decoding_carryover
= 0;
4200 pset_encoding_buf (p
, empty_unibyte_string
);
4202 p
->inherit_coding_system_flag
4203 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4205 if (!NILP (ps
->log
))
4206 call3 (ps
->log
, server
, proc
,
4207 concat3 (build_string ("accept from "),
4208 (STRINGP (host
) ? host
: build_string ("-")),
4209 build_string ("\n")));
4211 exec_sentinel (proc
,
4212 concat3 (build_string ("open from "),
4213 (STRINGP (host
) ? host
: build_string ("-")),
4214 build_string ("\n")));
4217 /* This variable is different from waiting_for_input in keyboard.c.
4218 It is used to communicate to a lisp process-filter/sentinel (via the
4219 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4220 for user-input when that process-filter was called.
4221 waiting_for_input cannot be used as that is by definition 0 when
4222 lisp code is being evalled.
4223 This is also used in record_asynch_buffer_change.
4224 For that purpose, this must be 0
4225 when not inside wait_reading_process_output. */
4226 static int waiting_for_user_input_p
;
4229 wait_reading_process_output_unwind (int data
)
4231 waiting_for_user_input_p
= data
;
4234 /* This is here so breakpoints can be put on it. */
4236 wait_reading_process_output_1 (void)
4240 /* Read and dispose of subprocess output while waiting for timeout to
4241 elapse and/or keyboard input to be available.
4245 If negative, gobble data immediately available but don't wait for any.
4248 an additional duration to wait, measured in nanoseconds
4249 If TIME_LIMIT is zero, then:
4250 If NSECS == 0, there is no limit.
4251 If NSECS > 0, the timeout consists of NSECS only.
4252 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
4255 0 to ignore keyboard input, or
4256 1 to return when input is available, or
4257 -1 meaning caller will actually read the input, so don't throw to
4258 the quit handler, or
4260 DO_DISPLAY means redisplay should be done to show subprocess
4261 output that arrives.
4263 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4264 (and gobble terminal input into the buffer if any arrives).
4266 If WAIT_PROC is specified, wait until something arrives from that
4269 If JUST_WAIT_PROC is nonzero, handle only output from WAIT_PROC
4270 (suspending output from other processes). A negative value
4271 means don't run any timers either.
4273 Return positive if we received input from WAIT_PROC (or from any
4274 process if WAIT_PROC is null), zero if we attempted to receive
4275 input but got none, and negative if we didn't even try. */
4278 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
4280 Lisp_Object wait_for_cell
,
4281 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
4291 struct timespec timeout
, end_time
;
4292 int got_some_input
= -1;
4295 FD_ZERO (&Available
);
4298 if (time_limit
== 0 && nsecs
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4299 && !(CONSP (wait_proc
->status
)
4300 && EQ (XCAR (wait_proc
->status
), Qexit
)))
4301 message1 ("Blocking call to accept-process-output with quit inhibited!!");
4303 record_unwind_protect_int (wait_reading_process_output_unwind
,
4304 waiting_for_user_input_p
);
4305 waiting_for_user_input_p
= read_kbd
;
4312 else if (TYPE_MAXIMUM (time_t) < time_limit
)
4313 time_limit
= TYPE_MAXIMUM (time_t);
4315 /* Since we may need to wait several times,
4316 compute the absolute time to return at. */
4317 if (time_limit
|| nsecs
> 0)
4319 timeout
= make_timespec (time_limit
, nsecs
);
4320 end_time
= timespec_add (current_timespec (), timeout
);
4325 bool timeout_reduced_for_timers
= 0;
4327 /* If calling from keyboard input, do not quit
4328 since we want to return C-g as an input character.
4329 Otherwise, do pending quit if requested. */
4332 else if (pending_signals
)
4333 process_pending_signals ();
4335 /* Exit now if the cell we're waiting for became non-nil. */
4336 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4339 /* After reading input, vacuum up any leftovers without waiting. */
4340 if (0 <= got_some_input
)
4343 /* Compute time from now till when time limit is up. */
4344 /* Exit if already run out. */
4347 /* A negative timeout means
4348 gobble output available now
4349 but don't wait at all. */
4351 timeout
= make_timespec (0, 0);
4353 else if (time_limit
|| nsecs
> 0)
4355 struct timespec now
= current_timespec ();
4356 if (timespec_cmp (end_time
, now
) <= 0)
4358 timeout
= timespec_sub (end_time
, now
);
4362 timeout
= make_timespec (100000, 0);
4365 /* Normally we run timers here.
4366 But not if wait_for_cell; in those cases,
4367 the wait is supposed to be short,
4368 and those callers cannot handle running arbitrary Lisp code here. */
4369 if (NILP (wait_for_cell
)
4370 && just_wait_proc
>= 0)
4372 struct timespec timer_delay
;
4376 unsigned old_timers_run
= timers_run
;
4377 struct buffer
*old_buffer
= current_buffer
;
4378 Lisp_Object old_window
= selected_window
;
4380 timer_delay
= timer_check ();
4382 /* If a timer has run, this might have changed buffers
4383 an alike. Make read_key_sequence aware of that. */
4384 if (timers_run
!= old_timers_run
4385 && (old_buffer
!= current_buffer
4386 || !EQ (old_window
, selected_window
))
4387 && waiting_for_user_input_p
== -1)
4388 record_asynch_buffer_change ();
4390 if (timers_run
!= old_timers_run
&& do_display
)
4391 /* We must retry, since a timer may have requeued itself
4392 and that could alter the time_delay. */
4393 redisplay_preserve_echo_area (9);
4397 while (!detect_input_pending ());
4399 /* If there is unread keyboard input, also return. */
4401 && requeued_events_pending_p ())
4404 /* A negative timeout means do not wait at all. */
4407 if (timespec_valid_p (timer_delay
))
4409 if (timespec_cmp (timer_delay
, timeout
) < 0)
4411 timeout
= timer_delay
;
4412 timeout_reduced_for_timers
= 1;
4417 /* This is so a breakpoint can be put here. */
4418 wait_reading_process_output_1 ();
4423 /* Cause C-g and alarm signals to take immediate action,
4424 and cause input available signals to zero out timeout.
4426 It is important that we do this before checking for process
4427 activity. If we get a SIGCHLD after the explicit checks for
4428 process activity, timeout is the only way we will know. */
4430 set_waiting_for_input (&timeout
);
4432 /* If status of something has changed, and no input is
4433 available, notify the user of the change right away. After
4434 this explicit check, we'll let the SIGCHLD handler zap
4435 timeout to get our attention. */
4436 if (update_tick
!= process_tick
)
4441 if (kbd_on_hold_p ())
4444 Atemp
= input_wait_mask
;
4447 timeout
= make_timespec (0, 0);
4448 if ((pselect (max (max_process_desc
, max_input_desc
) + 1,
4450 #ifdef NON_BLOCKING_CONNECT
4451 (num_pending_connects
> 0 ? &Ctemp
: NULL
),
4455 NULL
, &timeout
, NULL
)
4458 /* It's okay for us to do this and then continue with
4459 the loop, since timeout has already been zeroed out. */
4460 clear_waiting_for_input ();
4461 got_some_input
= status_notify (NULL
, wait_proc
);
4462 if (do_display
) redisplay_preserve_echo_area (13);
4466 /* Don't wait for output from a non-running process. Just
4467 read whatever data has already been received. */
4468 if (wait_proc
&& wait_proc
->raw_status_new
)
4469 update_status (wait_proc
);
4471 && ! EQ (wait_proc
->status
, Qrun
)
4472 && ! EQ (wait_proc
->status
, Qconnect
))
4474 bool read_some_bytes
= 0;
4476 clear_waiting_for_input ();
4477 XSETPROCESS (proc
, wait_proc
);
4479 /* Read data from the process, until we exhaust it. */
4480 while (wait_proc
->infd
>= 0)
4482 int nread
= read_process_output (proc
, wait_proc
->infd
);
4485 if (errno
== EIO
|| errno
== EAGAIN
)
4488 if (errno
== EWOULDBLOCK
)
4494 if (got_some_input
< nread
)
4495 got_some_input
= nread
;
4498 read_some_bytes
= true;
4501 if (read_some_bytes
&& do_display
)
4502 redisplay_preserve_echo_area (10);
4507 /* Wait till there is something to do */
4509 if (wait_proc
&& just_wait_proc
)
4511 if (wait_proc
->infd
< 0) /* Terminated */
4513 FD_SET (wait_proc
->infd
, &Available
);
4517 else if (!NILP (wait_for_cell
))
4519 Available
= non_process_wait_mask
;
4526 Available
= non_keyboard_wait_mask
;
4528 Available
= input_wait_mask
;
4529 Writeok
= write_mask
;
4530 check_delay
= wait_proc
? 0 : process_output_delay_count
;
4531 check_write
= SELECT_CAN_DO_WRITE_MASK
;
4534 /* If frame size has changed or the window is newly mapped,
4535 redisplay now, before we start to wait. There is a race
4536 condition here; if a SIGIO arrives between now and the select
4537 and indicates that a frame is trashed, the select may block
4538 displaying a trashed screen. */
4539 if (frame_garbaged
&& do_display
)
4541 clear_waiting_for_input ();
4542 redisplay_preserve_echo_area (11);
4544 set_waiting_for_input (&timeout
);
4547 /* Skip the `select' call if input is available and we're
4548 waiting for keyboard input or a cell change (which can be
4549 triggered by processing X events). In the latter case, set
4550 nfds to 1 to avoid breaking the loop. */
4552 if ((read_kbd
|| !NILP (wait_for_cell
))
4553 && detect_input_pending ())
4555 nfds
= read_kbd
? 0 : 1;
4557 FD_ZERO (&Available
);
4563 #ifdef ADAPTIVE_READ_BUFFERING
4564 /* Set the timeout for adaptive read buffering if any
4565 process has non-zero read_output_skip and non-zero
4566 read_output_delay, and we are not reading output for a
4567 specific process. It is not executed if
4568 Vprocess_adaptive_read_buffering is nil. */
4569 if (process_output_skip
&& check_delay
> 0)
4571 int nsecs
= timeout
.tv_nsec
;
4572 if (timeout
.tv_sec
> 0 || nsecs
> READ_OUTPUT_DELAY_MAX
)
4573 nsecs
= READ_OUTPUT_DELAY_MAX
;
4574 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4576 proc
= chan_process
[channel
];
4579 /* Find minimum non-zero read_output_delay among the
4580 processes with non-zero read_output_skip. */
4581 if (XPROCESS (proc
)->read_output_delay
> 0)
4584 if (!XPROCESS (proc
)->read_output_skip
)
4586 FD_CLR (channel
, &Available
);
4587 XPROCESS (proc
)->read_output_skip
= 0;
4588 if (XPROCESS (proc
)->read_output_delay
< nsecs
)
4589 nsecs
= XPROCESS (proc
)->read_output_delay
;
4592 timeout
= make_timespec (0, nsecs
);
4593 process_output_skip
= 0;
4597 #if defined (HAVE_NS)
4598 # define SELECT ns_select
4599 #elif defined (HAVE_GLIB)
4600 # define SELECT xg_select
4602 # define SELECT pselect
4605 (max (max_process_desc
, max_input_desc
) + 1,
4607 (check_write
? &Writeok
: 0),
4608 NULL
, &timeout
, NULL
);
4612 /* GnuTLS buffers data internally. In lowat mode it leaves
4613 some data in the TCP buffers so that select works, but
4614 with custom pull/push functions we need to check if some
4615 data is available in the buffers manually. */
4620 /* We're not waiting on a specific process, so loop
4621 through all the channels and check for data.
4622 This is a workaround needed for some versions of
4623 the gnutls library -- 2.12.14 has been confirmed
4625 http://comments.gmane.org/gmane.emacs.devel/145074 */
4626 for (channel
= 0; channel
< FD_SETSIZE
; ++channel
)
4627 if (! NILP (chan_process
[channel
]))
4629 struct Lisp_Process
*p
=
4630 XPROCESS (chan_process
[channel
]);
4631 if (p
&& p
->gnutls_p
&& p
->gnutls_state
4632 && ((emacs_gnutls_record_check_pending
4637 eassert (p
->infd
== channel
);
4638 FD_SET (p
->infd
, &Available
);
4644 /* Check this specific channel. */
4645 if (wait_proc
->gnutls_p
/* Check for valid process. */
4646 && wait_proc
->gnutls_state
4647 /* Do we have pending data? */
4648 && ((emacs_gnutls_record_check_pending
4649 (wait_proc
->gnutls_state
))
4653 /* Set to Available. */
4654 FD_SET (wait_proc
->infd
, &Available
);
4663 /* Make C-g and alarm signals set flags again */
4664 clear_waiting_for_input ();
4666 /* If we woke up due to SIGWINCH, actually change size now. */
4667 do_pending_window_change (0);
4669 if ((time_limit
|| nsecs
) && nfds
== 0 && ! timeout_reduced_for_timers
)
4670 /* We waited the full specified time, so return now. */
4674 if (xerrno
== EINTR
)
4676 else if (xerrno
== EBADF
)
4679 report_file_errno ("Failed select", Qnil
, xerrno
);
4682 /* Check for keyboard input */
4683 /* If there is any, return immediately
4684 to give it higher priority than subprocesses */
4688 unsigned old_timers_run
= timers_run
;
4689 struct buffer
*old_buffer
= current_buffer
;
4690 Lisp_Object old_window
= selected_window
;
4693 if (detect_input_pending_run_timers (do_display
))
4695 swallow_events (do_display
);
4696 if (detect_input_pending_run_timers (do_display
))
4700 /* If a timer has run, this might have changed buffers
4701 an alike. Make read_key_sequence aware of that. */
4702 if (timers_run
!= old_timers_run
4703 && waiting_for_user_input_p
== -1
4704 && (old_buffer
!= current_buffer
4705 || !EQ (old_window
, selected_window
)))
4706 record_asynch_buffer_change ();
4712 /* If there is unread keyboard input, also return. */
4714 && requeued_events_pending_p ())
4717 /* If we are not checking for keyboard input now,
4718 do process events (but don't run any timers).
4719 This is so that X events will be processed.
4720 Otherwise they may have to wait until polling takes place.
4721 That would causes delays in pasting selections, for example.
4723 (We used to do this only if wait_for_cell.) */
4724 if (read_kbd
== 0 && detect_input_pending ())
4726 swallow_events (do_display
);
4727 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4728 if (detect_input_pending ())
4733 /* Exit now if the cell we're waiting for became non-nil. */
4734 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4738 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4739 go read it. This can happen with X on BSD after logging out.
4740 In that case, there really is no input and no SIGIO,
4741 but select says there is input. */
4743 if (read_kbd
&& interrupt_input
4744 && keyboard_bit_set (&Available
) && ! noninteractive
)
4745 handle_input_available_signal (SIGIO
);
4748 /* If checking input just got us a size-change event from X,
4749 obey it now if we should. */
4750 if (read_kbd
|| ! NILP (wait_for_cell
))
4751 do_pending_window_change (0);
4753 /* Check for data from a process. */
4754 if (no_avail
|| nfds
== 0)
4757 for (channel
= 0; channel
<= max_input_desc
; ++channel
)
4759 struct fd_callback_data
*d
= &fd_callback_info
[channel
];
4761 && ((d
->condition
& FOR_READ
4762 && FD_ISSET (channel
, &Available
))
4763 || (d
->condition
& FOR_WRITE
4764 && FD_ISSET (channel
, &write_mask
))))
4765 d
->func (channel
, d
->data
);
4768 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4770 if (FD_ISSET (channel
, &Available
)
4771 && FD_ISSET (channel
, &non_keyboard_wait_mask
)
4772 && !FD_ISSET (channel
, &non_process_wait_mask
))
4776 /* If waiting for this channel, arrange to return as
4777 soon as no more input to be processed. No more
4779 proc
= chan_process
[channel
];
4783 /* If this is a server stream socket, accept connection. */
4784 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4786 server_accept_connection (proc
, channel
);
4790 /* Read data from the process, starting with our
4791 buffered-ahead character if we have one. */
4793 nread
= read_process_output (proc
, channel
);
4794 if ((!wait_proc
|| wait_proc
== XPROCESS (proc
)) && got_some_input
< nread
)
4795 got_some_input
= nread
;
4798 /* Since read_process_output can run a filter,
4799 which can call accept-process-output,
4800 don't try to read from any other processes
4801 before doing the select again. */
4802 FD_ZERO (&Available
);
4805 redisplay_preserve_echo_area (12);
4808 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4811 else if (nread
== -1 && errno
== EAGAIN
)
4814 /* FIXME: Is this special case still needed? */
4815 /* Note that we cannot distinguish between no input
4816 available now and a closed pipe.
4817 With luck, a closed pipe will be accompanied by
4818 subprocess termination and SIGCHLD. */
4819 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4823 /* On some OSs with ptys, when the process on one end of
4824 a pty exits, the other end gets an error reading with
4825 errno = EIO instead of getting an EOF (0 bytes read).
4826 Therefore, if we get an error reading and errno =
4827 EIO, just continue, because the child process has
4828 exited and should clean itself up soon (e.g. when we
4830 else if (nread
== -1 && errno
== EIO
)
4832 struct Lisp_Process
*p
= XPROCESS (proc
);
4834 /* Clear the descriptor now, so we only raise the
4836 FD_CLR (channel
, &input_wait_mask
);
4837 FD_CLR (channel
, &non_keyboard_wait_mask
);
4841 /* If the EIO occurs on a pty, the SIGCHLD handler's
4842 waitpid call will not find the process object to
4843 delete. Do it here. */
4844 p
->tick
= ++process_tick
;
4845 pset_status (p
, Qfailed
);
4848 #endif /* HAVE_PTYS */
4849 /* If we can detect process termination, don't consider the
4850 process gone just because its pipe is closed. */
4851 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
4855 /* Preserve status of processes already terminated. */
4856 XPROCESS (proc
)->tick
= ++process_tick
;
4857 deactivate_process (proc
);
4858 if (XPROCESS (proc
)->raw_status_new
)
4859 update_status (XPROCESS (proc
));
4860 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4861 pset_status (XPROCESS (proc
),
4862 list2 (Qexit
, make_number (256)));
4865 #ifdef NON_BLOCKING_CONNECT
4866 if (FD_ISSET (channel
, &Writeok
)
4867 && FD_ISSET (channel
, &connect_wait_mask
))
4869 struct Lisp_Process
*p
;
4871 FD_CLR (channel
, &connect_wait_mask
);
4872 FD_CLR (channel
, &write_mask
);
4873 if (--num_pending_connects
< 0)
4876 proc
= chan_process
[channel
];
4880 p
= XPROCESS (proc
);
4883 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4884 So only use it on systems where it is known to work. */
4886 socklen_t xlen
= sizeof (xerrno
);
4887 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4892 struct sockaddr pname
;
4893 socklen_t pnamelen
= sizeof (pname
);
4895 /* If connection failed, getpeername will fail. */
4897 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
4899 /* Obtain connect failure code through error slippage. */
4902 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
4909 p
->tick
= ++process_tick
;
4910 pset_status (p
, list2 (Qfailed
, make_number (xerrno
)));
4911 deactivate_process (proc
);
4915 pset_status (p
, Qrun
);
4916 /* Execute the sentinel here. If we had relied on
4917 status_notify to do it later, it will read input
4918 from the process before calling the sentinel. */
4919 exec_sentinel (proc
, build_string ("open\n"));
4920 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4922 FD_SET (p
->infd
, &input_wait_mask
);
4923 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4927 #endif /* NON_BLOCKING_CONNECT */
4928 } /* End for each file descriptor. */
4929 } /* End while exit conditions not met. */
4933 /* If calling from keyboard input, do not quit
4934 since we want to return C-g as an input character.
4935 Otherwise, do pending quit if requested. */
4938 /* Prevent input_pending from remaining set if we quit. */
4939 clear_input_pending ();
4943 return got_some_input
;
4946 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4949 read_process_output_call (Lisp_Object fun_and_args
)
4951 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4955 read_process_output_error_handler (Lisp_Object error_val
)
4957 cmd_error_internal (error_val
, "error in process filter: ");
4959 update_echo_area ();
4960 Fsleep_for (make_number (2), Qnil
);
4965 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
4967 struct coding_system
*coding
);
4969 /* Read pending output from the process channel,
4970 starting with our buffered-ahead character if we have one.
4971 Yield number of decoded characters read.
4973 This function reads at most 4096 characters.
4974 If you want to read all available subprocess output,
4975 you must call it repeatedly until it returns zero.
4977 The characters read are decoded according to PROC's coding-system
4981 read_process_output (Lisp_Object proc
, register int channel
)
4983 register ssize_t nbytes
;
4985 register struct Lisp_Process
*p
= XPROCESS (proc
);
4986 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4987 int carryover
= p
->decoding_carryover
;
4990 Lisp_Object odeactivate
;
4992 chars
= alloca (carryover
+ readmax
);
4994 /* See the comment above. */
4995 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
4997 #ifdef DATAGRAM_SOCKETS
4998 /* We have a working select, so proc_buffered_char is always -1. */
4999 if (DATAGRAM_CHAN_P (channel
))
5001 socklen_t len
= datagram_address
[channel
].len
;
5002 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5003 0, datagram_address
[channel
].sa
, &len
);
5008 bool buffered
= proc_buffered_char
[channel
] >= 0;
5011 chars
[carryover
] = proc_buffered_char
[channel
];
5012 proc_buffered_char
[channel
] = -1;
5015 if (p
->gnutls_p
&& p
->gnutls_state
)
5016 nbytes
= emacs_gnutls_read (p
, chars
+ carryover
+ buffered
,
5017 readmax
- buffered
);
5020 nbytes
= emacs_read (channel
, chars
+ carryover
+ buffered
,
5021 readmax
- buffered
);
5022 #ifdef ADAPTIVE_READ_BUFFERING
5023 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5025 int delay
= p
->read_output_delay
;
5028 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5031 process_output_delay_count
++;
5032 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5035 else if (delay
> 0 && nbytes
== readmax
- buffered
)
5037 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5039 process_output_delay_count
--;
5041 p
->read_output_delay
= delay
;
5044 p
->read_output_skip
= 1;
5045 process_output_skip
= 1;
5050 nbytes
+= buffered
&& nbytes
<= 0;
5053 p
->decoding_carryover
= 0;
5055 /* At this point, NBYTES holds number of bytes just received
5056 (including the one in proc_buffered_char[channel]). */
5059 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
) {
5063 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5066 /* Now set NBYTES how many bytes we must decode. */
5067 nbytes
+= carryover
;
5069 odeactivate
= Vdeactivate_mark
;
5070 /* There's no good reason to let process filters change the current
5071 buffer, and many callers of accept-process-output, sit-for, and
5072 friends don't expect current-buffer to be changed from under them. */
5073 record_unwind_current_buffer ();
5075 read_and_dispose_of_process_output (p
, chars
, nbytes
, coding
);
5077 /* Handling the process output should not deactivate the mark. */
5078 Vdeactivate_mark
= odeactivate
;
5085 read_and_dispose_of_process_output (struct Lisp_Process
*p
, char *chars
,
5087 struct coding_system
*coding
)
5089 Lisp_Object outstream
= p
->filter
;
5091 bool outer_running_asynch_code
= running_asynch_code
;
5092 int waiting
= waiting_for_user_input_p
;
5094 /* No need to gcpro these, because all we do with them later
5095 is test them for EQness, and none of them should be a string. */
5097 Lisp_Object obuffer
, okeymap
;
5098 XSETBUFFER (obuffer
, current_buffer
);
5099 okeymap
= BVAR (current_buffer
, keymap
);
5102 /* We inhibit quit here instead of just catching it so that
5103 hitting ^G when a filter happens to be running won't screw
5105 specbind (Qinhibit_quit
, Qt
);
5106 specbind (Qlast_nonmenu_event
, Qt
);
5108 /* In case we get recursively called,
5109 and we already saved the match data nonrecursively,
5110 save the same match data in safely recursive fashion. */
5111 if (outer_running_asynch_code
)
5114 /* Don't clobber the CURRENT match data, either! */
5115 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5116 restore_search_regs ();
5117 record_unwind_save_match_data ();
5118 Fset_match_data (tem
, Qt
);
5121 /* For speed, if a search happens within this code,
5122 save the match data in a special nonrecursive fashion. */
5123 running_asynch_code
= 1;
5125 decode_coding_c_string (coding
, (unsigned char *) chars
, nbytes
, Qt
);
5126 text
= coding
->dst_object
;
5127 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5128 /* A new coding system might be found. */
5129 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5131 pset_decode_coding_system (p
, Vlast_coding_system_used
);
5133 /* Don't call setup_coding_system for
5134 proc_decode_coding_system[channel] here. It is done in
5135 detect_coding called via decode_coding above. */
5137 /* If a coding system for encoding is not yet decided, we set
5138 it as the same as coding-system for decoding.
5140 But, before doing that we must check if
5141 proc_encode_coding_system[p->outfd] surely points to a
5142 valid memory because p->outfd will be changed once EOF is
5143 sent to the process. */
5144 if (NILP (p
->encode_coding_system
)
5145 && proc_encode_coding_system
[p
->outfd
])
5147 pset_encode_coding_system
5148 (p
, coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
));
5149 setup_coding_system (p
->encode_coding_system
,
5150 proc_encode_coding_system
[p
->outfd
]);
5154 if (coding
->carryover_bytes
> 0)
5156 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5157 pset_decoding_buf (p
, make_uninit_string (coding
->carryover_bytes
));
5158 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5159 coding
->carryover_bytes
);
5160 p
->decoding_carryover
= coding
->carryover_bytes
;
5162 if (SBYTES (text
) > 0)
5163 /* FIXME: It's wrong to wrap or not based on debug-on-error, and
5164 sometimes it's simply wrong to wrap (e.g. when called from
5165 accept-process-output). */
5166 internal_condition_case_1 (read_process_output_call
,
5167 list3 (outstream
, make_lisp_proc (p
), text
),
5168 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5169 read_process_output_error_handler
);
5171 /* If we saved the match data nonrecursively, restore it now. */
5172 restore_search_regs ();
5173 running_asynch_code
= outer_running_asynch_code
;
5175 /* Restore waiting_for_user_input_p as it was
5176 when we were called, in case the filter clobbered it. */
5177 waiting_for_user_input_p
= waiting
;
5179 #if 0 /* Call record_asynch_buffer_change unconditionally,
5180 because we might have changed minor modes or other things
5181 that affect key bindings. */
5182 if (! EQ (Fcurrent_buffer (), obuffer
)
5183 || ! EQ (current_buffer
->keymap
, okeymap
))
5185 /* But do it only if the caller is actually going to read events.
5186 Otherwise there's no need to make him wake up, and it could
5187 cause trouble (for example it would make sit_for return). */
5188 if (waiting_for_user_input_p
== -1)
5189 record_asynch_buffer_change ();
5192 DEFUN ("internal-default-process-filter", Finternal_default_process_filter
,
5193 Sinternal_default_process_filter
, 2, 2, 0,
5194 doc
: /* Function used as default process filter.
5195 This inserts the process's output into its buffer, if there is one.
5196 Otherwise it discards the output. */)
5197 (Lisp_Object proc
, Lisp_Object text
)
5199 struct Lisp_Process
*p
;
5202 CHECK_PROCESS (proc
);
5203 p
= XPROCESS (proc
);
5204 CHECK_STRING (text
);
5206 if (!NILP (p
->buffer
) && BUFFER_LIVE_P (XBUFFER (p
->buffer
)))
5208 Lisp_Object old_read_only
;
5209 ptrdiff_t old_begv
, old_zv
;
5210 ptrdiff_t old_begv_byte
, old_zv_byte
;
5211 ptrdiff_t before
, before_byte
;
5212 ptrdiff_t opoint_byte
;
5215 Fset_buffer (p
->buffer
);
5217 opoint_byte
= PT_BYTE
;
5218 old_read_only
= BVAR (current_buffer
, read_only
);
5221 old_begv_byte
= BEGV_BYTE
;
5222 old_zv_byte
= ZV_BYTE
;
5224 bset_read_only (current_buffer
, Qnil
);
5226 /* Insert new output into buffer at the current end-of-output
5227 marker, thus preserving logical ordering of input and output. */
5228 if (XMARKER (p
->mark
)->buffer
)
5229 set_point_from_marker (p
->mark
);
5231 SET_PT_BOTH (ZV
, ZV_BYTE
);
5233 before_byte
= PT_BYTE
;
5235 /* If the output marker is outside of the visible region, save
5236 the restriction and widen. */
5237 if (! (BEGV
<= PT
&& PT
<= ZV
))
5240 /* Adjust the multibyteness of TEXT to that of the buffer. */
5241 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
))
5242 != ! STRING_MULTIBYTE (text
))
5243 text
= (STRING_MULTIBYTE (text
)
5244 ? Fstring_as_unibyte (text
)
5245 : Fstring_to_multibyte (text
));
5246 /* Insert before markers in case we are inserting where
5247 the buffer's mark is, and the user's next command is Meta-y. */
5248 insert_from_string_before_markers (text
, 0, 0,
5249 SCHARS (text
), SBYTES (text
), 0);
5251 /* Make sure the process marker's position is valid when the
5252 process buffer is changed in the signal_after_change above.
5253 W3 is known to do that. */
5254 if (BUFFERP (p
->buffer
)
5255 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5256 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5258 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5260 update_mode_lines
= 23;
5262 /* Make sure opoint and the old restrictions
5263 float ahead of any new text just as point would. */
5264 if (opoint
>= before
)
5266 opoint
+= PT
- before
;
5267 opoint_byte
+= PT_BYTE
- before_byte
;
5269 if (old_begv
> before
)
5271 old_begv
+= PT
- before
;
5272 old_begv_byte
+= PT_BYTE
- before_byte
;
5274 if (old_zv
>= before
)
5276 old_zv
+= PT
- before
;
5277 old_zv_byte
+= PT_BYTE
- before_byte
;
5280 /* If the restriction isn't what it should be, set it. */
5281 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5282 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5284 bset_read_only (current_buffer
, old_read_only
);
5285 SET_PT_BOTH (opoint
, opoint_byte
);
5290 /* Sending data to subprocess. */
5292 /* In send_process, when a write fails temporarily,
5293 wait_reading_process_output is called. It may execute user code,
5294 e.g. timers, that attempts to write new data to the same process.
5295 We must ensure that data is sent in the right order, and not
5296 interspersed half-completed with other writes (Bug#10815). This is
5297 handled by the write_queue element of struct process. It is a list
5298 with each entry having the form
5300 (string . (offset . length))
5302 where STRING is a lisp string, OFFSET is the offset into the
5303 string's byte sequence from which we should begin to send, and
5304 LENGTH is the number of bytes left to send. */
5306 /* Create a new entry in write_queue.
5307 INPUT_OBJ should be a buffer, string Qt, or Qnil.
5308 BUF is a pointer to the string sequence of the input_obj or a C
5309 string in case of Qt or Qnil. */
5312 write_queue_push (struct Lisp_Process
*p
, Lisp_Object input_obj
,
5313 const char *buf
, ptrdiff_t len
, bool front
)
5316 Lisp_Object entry
, obj
;
5318 if (STRINGP (input_obj
))
5320 offset
= buf
- SSDATA (input_obj
);
5326 obj
= make_unibyte_string (buf
, len
);
5329 entry
= Fcons (obj
, Fcons (make_number (offset
), make_number (len
)));
5332 pset_write_queue (p
, Fcons (entry
, p
->write_queue
));
5334 pset_write_queue (p
, nconc2 (p
->write_queue
, list1 (entry
)));
5337 /* Remove the first element in the write_queue of process P, put its
5338 contents in OBJ, BUF and LEN, and return true. If the
5339 write_queue is empty, return false. */
5342 write_queue_pop (struct Lisp_Process
*p
, Lisp_Object
*obj
,
5343 const char **buf
, ptrdiff_t *len
)
5345 Lisp_Object entry
, offset_length
;
5348 if (NILP (p
->write_queue
))
5351 entry
= XCAR (p
->write_queue
);
5352 pset_write_queue (p
, XCDR (p
->write_queue
));
5354 *obj
= XCAR (entry
);
5355 offset_length
= XCDR (entry
);
5357 *len
= XINT (XCDR (offset_length
));
5358 offset
= XINT (XCAR (offset_length
));
5359 *buf
= SSDATA (*obj
) + offset
;
5364 /* Send some data to process PROC.
5365 BUF is the beginning of the data; LEN is the number of characters.
5366 OBJECT is the Lisp object that the data comes from. If OBJECT is
5367 nil or t, it means that the data comes from C string.
5369 If OBJECT is not nil, the data is encoded by PROC's coding-system
5370 for encoding before it is sent.
5372 This function can evaluate Lisp code and can garbage collect. */
5375 send_process (Lisp_Object proc
, const char *buf
, ptrdiff_t len
,
5378 struct Lisp_Process
*p
= XPROCESS (proc
);
5380 struct coding_system
*coding
;
5382 if (p
->raw_status_new
)
5384 if (! EQ (p
->status
, Qrun
))
5385 error ("Process %s not running", SDATA (p
->name
));
5387 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5389 coding
= proc_encode_coding_system
[p
->outfd
];
5390 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5392 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5393 || (BUFFERP (object
)
5394 && !NILP (BVAR (XBUFFER (object
), enable_multibyte_characters
)))
5397 pset_encode_coding_system
5398 (p
, complement_process_encoding_system (p
->encode_coding_system
));
5399 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5401 /* The coding system for encoding was changed to raw-text
5402 because we sent a unibyte text previously. Now we are
5403 sending a multibyte text, thus we must encode it by the
5404 original coding system specified for the current process.
5406 Another reason we come here is that the coding system
5407 was just complemented and a new one was returned by
5408 complement_process_encoding_system. */
5409 setup_coding_system (p
->encode_coding_system
, coding
);
5410 Vlast_coding_system_used
= p
->encode_coding_system
;
5412 coding
->src_multibyte
= 1;
5416 coding
->src_multibyte
= 0;
5417 /* For sending a unibyte text, character code conversion should
5418 not take place but EOL conversion should. So, setup raw-text
5419 or one of the subsidiary if we have not yet done it. */
5420 if (CODING_REQUIRE_ENCODING (coding
))
5422 if (CODING_REQUIRE_FLUSHING (coding
))
5424 /* But, before changing the coding, we must flush out data. */
5425 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5426 send_process (proc
, "", 0, Qt
);
5427 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5429 setup_coding_system (raw_text_coding_system
5430 (Vlast_coding_system_used
),
5432 coding
->src_multibyte
= 0;
5435 coding
->dst_multibyte
= 0;
5437 if (CODING_REQUIRE_ENCODING (coding
))
5439 coding
->dst_object
= Qt
;
5440 if (BUFFERP (object
))
5442 ptrdiff_t from_byte
, from
, to
;
5443 ptrdiff_t save_pt
, save_pt_byte
;
5444 struct buffer
*cur
= current_buffer
;
5446 set_buffer_internal (XBUFFER (object
));
5447 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5449 from_byte
= PTR_BYTE_POS ((unsigned char *) buf
);
5450 from
= BYTE_TO_CHAR (from_byte
);
5451 to
= BYTE_TO_CHAR (from_byte
+ len
);
5452 TEMP_SET_PT_BOTH (from
, from_byte
);
5453 encode_coding_object (coding
, object
, from
, from_byte
,
5454 to
, from_byte
+ len
, Qt
);
5455 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5456 set_buffer_internal (cur
);
5458 else if (STRINGP (object
))
5460 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5461 SBYTES (object
), Qt
);
5465 coding
->dst_object
= make_unibyte_string (buf
, len
);
5466 coding
->produced
= len
;
5469 len
= coding
->produced
;
5470 object
= coding
->dst_object
;
5471 buf
= SSDATA (object
);
5474 /* If there is already data in the write_queue, put the new data
5475 in the back of queue. Otherwise, ignore it. */
5476 if (!NILP (p
->write_queue
))
5477 write_queue_push (p
, object
, buf
, len
, 0);
5479 do /* while !NILP (p->write_queue) */
5481 ptrdiff_t cur_len
= -1;
5482 const char *cur_buf
;
5483 Lisp_Object cur_object
;
5485 /* If write_queue is empty, ignore it. */
5486 if (!write_queue_pop (p
, &cur_object
, &cur_buf
, &cur_len
))
5490 cur_object
= object
;
5495 /* Send this batch, using one or more write calls. */
5496 ptrdiff_t written
= 0;
5497 int outfd
= p
->outfd
;
5498 #ifdef DATAGRAM_SOCKETS
5499 if (DATAGRAM_CHAN_P (outfd
))
5501 rv
= sendto (outfd
, cur_buf
, cur_len
,
5502 0, datagram_address
[outfd
].sa
,
5503 datagram_address
[outfd
].len
);
5506 else if (errno
== EMSGSIZE
)
5507 report_file_error ("Sending datagram", proc
);
5513 if (p
->gnutls_p
&& p
->gnutls_state
)
5514 written
= emacs_gnutls_write (p
, cur_buf
, cur_len
);
5517 written
= emacs_write_sig (outfd
, cur_buf
, cur_len
);
5518 rv
= (written
? 0 : -1);
5519 #ifdef ADAPTIVE_READ_BUFFERING
5520 if (p
->read_output_delay
> 0
5521 && p
->adaptive_read_buffering
== 1)
5523 p
->read_output_delay
= 0;
5524 process_output_delay_count
--;
5525 p
->read_output_skip
= 0;
5534 || errno
== EWOULDBLOCK
5537 /* Buffer is full. Wait, accepting input;
5538 that may allow the program
5539 to finish doing output and read more. */
5541 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5542 /* A gross hack to work around a bug in FreeBSD.
5543 In the following sequence, read(2) returns
5547 write(2) 954 bytes, get EAGAIN
5548 read(2) 1024 bytes in process_read_output
5549 read(2) 11 bytes in process_read_output
5551 That is, read(2) returns more bytes than have
5552 ever been written successfully. The 1033 bytes
5553 read are the 1022 bytes written successfully
5554 after processing (for example with CRs added if
5555 the terminal is set up that way which it is
5556 here). The same bytes will be seen again in a
5557 later read(2), without the CRs. */
5559 if (errno
== EAGAIN
)
5562 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5564 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5566 /* Put what we should have written in wait_queue. */
5567 write_queue_push (p
, cur_object
, cur_buf
, cur_len
, 1);
5568 wait_reading_process_output (0, 20 * 1000 * 1000,
5569 0, 0, Qnil
, NULL
, 0);
5570 /* Reread queue, to see what is left. */
5573 else if (errno
== EPIPE
)
5575 p
->raw_status_new
= 0;
5576 pset_status (p
, list2 (Qexit
, make_number (256)));
5577 p
->tick
= ++process_tick
;
5578 deactivate_process (proc
);
5579 error ("process %s no longer connected to pipe; closed it",
5583 /* This is a real error. */
5584 report_file_error ("Writing to process", proc
);
5590 while (!NILP (p
->write_queue
));
5593 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5595 doc
: /* Send current contents of region as input to PROCESS.
5596 PROCESS may be a process, a buffer, the name of a process or buffer, or
5597 nil, indicating the current buffer's process.
5598 Called from program, takes three arguments, PROCESS, START and END.
5599 If the region is more than 500 characters long,
5600 it is sent in several bunches. This may happen even for shorter regions.
5601 Output from processes can arrive in between bunches. */)
5602 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5604 Lisp_Object proc
= get_process (process
);
5605 ptrdiff_t start_byte
, end_byte
;
5607 validate_region (&start
, &end
);
5609 start_byte
= CHAR_TO_BYTE (XINT (start
));
5610 end_byte
= CHAR_TO_BYTE (XINT (end
));
5612 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5613 move_gap_both (XINT (start
), start_byte
);
5615 send_process (proc
, (char *) BYTE_POS_ADDR (start_byte
),
5616 end_byte
- start_byte
, Fcurrent_buffer ());
5621 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5623 doc
: /* Send PROCESS the contents of STRING as input.
5624 PROCESS may be a process, a buffer, the name of a process or buffer, or
5625 nil, indicating the current buffer's process.
5626 If STRING is more than 500 characters long,
5627 it is sent in several bunches. This may happen even for shorter strings.
5628 Output from processes can arrive in between bunches. */)
5629 (Lisp_Object process
, Lisp_Object string
)
5632 CHECK_STRING (string
);
5633 proc
= get_process (process
);
5634 send_process (proc
, SSDATA (string
),
5635 SBYTES (string
), string
);
5639 /* Return the foreground process group for the tty/pty that
5640 the process P uses. */
5642 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5647 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5650 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5651 master side. Try the slave side. */
5652 fd
= emacs_open (SSDATA (p
->tty_name
), O_RDONLY
, 0);
5656 ioctl (fd
, TIOCGPGRP
, &gid
);
5660 #endif /* defined (TIOCGPGRP ) */
5665 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5666 Sprocess_running_child_p
, 0, 1, 0,
5667 doc
: /* Return t if PROCESS has given the terminal to a child.
5668 If the operating system does not make it possible to find out,
5669 return t unconditionally. */)
5670 (Lisp_Object process
)
5672 /* Initialize in case ioctl doesn't exist or gives an error,
5673 in a way that will cause returning t. */
5676 struct Lisp_Process
*p
;
5678 proc
= get_process (process
);
5679 p
= XPROCESS (proc
);
5681 if (!EQ (p
->type
, Qreal
))
5682 error ("Process %s is not a subprocess",
5685 error ("Process %s is not active",
5688 gid
= emacs_get_tty_pgrp (p
);
5695 /* send a signal number SIGNO to PROCESS.
5696 If CURRENT_GROUP is t, that means send to the process group
5697 that currently owns the terminal being used to communicate with PROCESS.
5698 This is used for various commands in shell mode.
5699 If CURRENT_GROUP is lambda, that means send to the process group
5700 that currently owns the terminal, but only if it is NOT the shell itself.
5702 If NOMSG is false, insert signal-announcements into process's buffers
5705 If we can, we try to signal PROCESS by sending control characters
5706 down the pty. This allows us to signal inferiors who have changed
5707 their uid, for which kill would return an EPERM error. */
5710 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5714 struct Lisp_Process
*p
;
5718 proc
= get_process (process
);
5719 p
= XPROCESS (proc
);
5721 if (!EQ (p
->type
, Qreal
))
5722 error ("Process %s is not a subprocess",
5725 error ("Process %s is not active",
5729 current_group
= Qnil
;
5731 /* If we are using pgrps, get a pgrp number and make it negative. */
5732 if (NILP (current_group
))
5733 /* Send the signal to the shell's process group. */
5737 #ifdef SIGNALS_VIA_CHARACTERS
5738 /* If possible, send signals to the entire pgrp
5739 by sending an input character to it. */
5742 cc_t
*sig_char
= NULL
;
5744 tcgetattr (p
->infd
, &t
);
5749 sig_char
= &t
.c_cc
[VINTR
];
5753 sig_char
= &t
.c_cc
[VQUIT
];
5757 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5758 sig_char
= &t
.c_cc
[VSWTCH
];
5760 sig_char
= &t
.c_cc
[VSUSP
];
5765 if (sig_char
&& *sig_char
!= CDISABLE
)
5767 send_process (proc
, (char *) sig_char
, 1, Qnil
);
5770 /* If we can't send the signal with a character,
5771 fall through and send it another way. */
5773 /* The code above may fall through if it can't
5774 handle the signal. */
5775 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5778 /* Get the current pgrp using the tty itself, if we have that.
5779 Otherwise, use the pty to get the pgrp.
5780 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5781 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5782 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5783 His patch indicates that if TIOCGPGRP returns an error, then
5784 we should just assume that p->pid is also the process group id. */
5786 gid
= emacs_get_tty_pgrp (p
);
5789 /* If we can't get the information, assume
5790 the shell owns the tty. */
5793 /* It is not clear whether anything really can set GID to -1.
5794 Perhaps on some system one of those ioctls can or could do so.
5795 Or perhaps this is vestigial. */
5798 #else /* ! defined (TIOCGPGRP ) */
5799 /* Can't select pgrps on this system, so we know that
5800 the child itself heads the pgrp. */
5802 #endif /* ! defined (TIOCGPGRP ) */
5804 /* If current_group is lambda, and the shell owns the terminal,
5805 don't send any signal. */
5806 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5811 if (signo
== SIGCONT
)
5813 p
->raw_status_new
= 0;
5814 pset_status (p
, Qrun
);
5815 p
->tick
= ++process_tick
;
5818 status_notify (NULL
, NULL
);
5819 redisplay_preserve_echo_area (13);
5825 /* Work around a HP-UX 7.0 bug that mishandles signals to subjobs.
5826 We don't know whether the bug is fixed in later HP-UX versions. */
5827 if (! NILP (current_group
) && ioctl (p
->infd
, TIOCSIGSEND
, signo
) != -1)
5831 /* If we don't have process groups, send the signal to the immediate
5832 subprocess. That isn't really right, but it's better than any
5833 obvious alternative. */
5834 pid_t pid
= no_pgrp
? gid
: - gid
;
5836 /* Do not kill an already-reaped process, as that could kill an
5837 innocent bystander that happens to have the same process ID. */
5839 block_child_signal (&oldset
);
5842 unblock_child_signal (&oldset
);
5845 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5846 doc
: /* Interrupt process PROCESS.
5847 PROCESS may be a process, a buffer, or the name of a process or buffer.
5848 No arg or nil means current buffer's process.
5849 Second arg CURRENT-GROUP non-nil means send signal to
5850 the current process-group of the process's controlling terminal
5851 rather than to the process's own process group.
5852 If the process is a shell, this means interrupt current subjob
5853 rather than the shell.
5855 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5856 don't send the signal. */)
5857 (Lisp_Object process
, Lisp_Object current_group
)
5859 process_send_signal (process
, SIGINT
, current_group
, 0);
5863 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5864 doc
: /* Kill process PROCESS. May be process or name of one.
5865 See function `interrupt-process' for more details on usage. */)
5866 (Lisp_Object process
, Lisp_Object current_group
)
5868 process_send_signal (process
, SIGKILL
, current_group
, 0);
5872 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5873 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5874 See function `interrupt-process' for more details on usage. */)
5875 (Lisp_Object process
, Lisp_Object current_group
)
5877 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5881 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5882 doc
: /* Stop process PROCESS. May be process or name of one.
5883 See function `interrupt-process' for more details on usage.
5884 If PROCESS is a network or serial process, inhibit handling of incoming
5886 (Lisp_Object process
, Lisp_Object current_group
)
5888 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5890 struct Lisp_Process
*p
;
5892 p
= XPROCESS (process
);
5893 if (NILP (p
->command
)
5896 FD_CLR (p
->infd
, &input_wait_mask
);
5897 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
5899 pset_command (p
, Qt
);
5903 error ("No SIGTSTP support");
5905 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5910 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5911 doc
: /* Continue process PROCESS. May be process or name of one.
5912 See function `interrupt-process' for more details on usage.
5913 If PROCESS is a network or serial process, resume handling of incoming
5915 (Lisp_Object process
, Lisp_Object current_group
)
5917 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
5919 struct Lisp_Process
*p
;
5921 p
= XPROCESS (process
);
5922 if (EQ (p
->command
, Qt
)
5924 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5926 FD_SET (p
->infd
, &input_wait_mask
);
5927 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5929 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
5930 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
5931 #else /* not WINDOWSNT */
5932 tcflush (p
->infd
, TCIFLUSH
);
5933 #endif /* not WINDOWSNT */
5935 pset_command (p
, Qnil
);
5939 process_send_signal (process
, SIGCONT
, current_group
, 0);
5941 error ("No SIGCONT support");
5946 /* Return the integer value of the signal whose abbreviation is ABBR,
5947 or a negative number if there is no such signal. */
5949 abbr_to_signal (char const *name
)
5952 char sigbuf
[20]; /* Large enough for all valid signal abbreviations. */
5954 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
5957 for (i
= 0; i
< sizeof sigbuf
; i
++)
5959 sigbuf
[i
] = c_toupper (name
[i
]);
5961 return str2sig (sigbuf
, &signo
) == 0 ? signo
: -1;
5967 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5968 2, 2, "sProcess (name or number): \nnSignal code: ",
5969 doc
: /* Send PROCESS the signal with code SIGCODE.
5970 PROCESS may also be a number specifying the process id of the
5971 process to signal; in this case, the process need not be a child of
5973 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5974 (Lisp_Object process
, Lisp_Object sigcode
)
5979 if (STRINGP (process
))
5981 Lisp_Object tem
= Fget_process (process
);
5984 Lisp_Object process_number
=
5985 string_to_number (SSDATA (process
), 10, 1);
5986 if (INTEGERP (process_number
) || FLOATP (process_number
))
5987 tem
= process_number
;
5991 else if (!NUMBERP (process
))
5992 process
= get_process (process
);
5997 if (NUMBERP (process
))
5998 CONS_TO_INTEGER (process
, pid_t
, pid
);
6001 CHECK_PROCESS (process
);
6002 pid
= XPROCESS (process
)->pid
;
6004 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6007 if (INTEGERP (sigcode
))
6009 CHECK_TYPE_RANGED_INTEGER (int, sigcode
);
6010 signo
= XINT (sigcode
);
6016 CHECK_SYMBOL (sigcode
);
6017 name
= SSDATA (SYMBOL_NAME (sigcode
));
6019 signo
= abbr_to_signal (name
);
6021 error ("Undefined signal name %s", name
);
6024 return make_number (kill (pid
, signo
));
6027 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6028 doc
: /* Make PROCESS see end-of-file in its input.
6029 EOF comes after any text already sent to it.
6030 PROCESS may be a process, a buffer, the name of a process or buffer, or
6031 nil, indicating the current buffer's process.
6032 If PROCESS is a network connection, or is a process communicating
6033 through a pipe (as opposed to a pty), then you cannot send any more
6034 text to PROCESS after you call this function.
6035 If PROCESS is a serial process, wait until all output written to the
6036 process has been transmitted to the serial port. */)
6037 (Lisp_Object process
)
6040 struct coding_system
*coding
= NULL
;
6043 if (DATAGRAM_CONN_P (process
))
6046 proc
= get_process (process
);
6047 outfd
= XPROCESS (proc
)->outfd
;
6049 coding
= proc_encode_coding_system
[outfd
];
6051 /* Make sure the process is really alive. */
6052 if (XPROCESS (proc
)->raw_status_new
)
6053 update_status (XPROCESS (proc
));
6054 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6055 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6057 if (coding
&& CODING_REQUIRE_FLUSHING (coding
))
6059 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6060 send_process (proc
, "", 0, Qnil
);
6063 if (XPROCESS (proc
)->pty_flag
)
6064 send_process (proc
, "\004", 1, Qnil
);
6065 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6068 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6069 report_file_error ("Failed tcdrain", Qnil
);
6070 #endif /* not WINDOWSNT */
6071 /* Do nothing on Windows because writes are blocking. */
6075 struct Lisp_Process
*p
= XPROCESS (proc
);
6076 int old_outfd
= p
->outfd
;
6079 #ifdef HAVE_SHUTDOWN
6080 /* If this is a network connection, or socketpair is used
6081 for communication with the subprocess, call shutdown to cause EOF.
6082 (In some old system, shutdown to socketpair doesn't work.
6083 Then we just can't win.) */
6084 if (EQ (p
->type
, Qnetwork
)
6085 || p
->infd
== old_outfd
)
6086 shutdown (old_outfd
, 1);
6088 close_process_fd (&p
->open_fd
[WRITE_TO_SUBPROCESS
]);
6089 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6091 report_file_error ("Opening null device", Qnil
);
6092 p
->open_fd
[WRITE_TO_SUBPROCESS
] = new_outfd
;
6093 p
->outfd
= new_outfd
;
6095 if (!proc_encode_coding_system
[new_outfd
])
6096 proc_encode_coding_system
[new_outfd
]
6097 = xmalloc (sizeof (struct coding_system
));
6100 *proc_encode_coding_system
[new_outfd
]
6101 = *proc_encode_coding_system
[old_outfd
];
6102 memset (proc_encode_coding_system
[old_outfd
], 0,
6103 sizeof (struct coding_system
));
6106 setup_coding_system (p
->encode_coding_system
,
6107 proc_encode_coding_system
[new_outfd
]);
6112 /* The main Emacs thread records child processes in three places:
6114 - Vprocess_alist, for asynchronous subprocesses, which are child
6115 processes visible to Lisp.
6117 - deleted_pid_list, for child processes invisible to Lisp,
6118 typically because of delete-process. These are recorded so that
6119 the processes can be reaped when they exit, so that the operating
6120 system's process table is not cluttered by zombies.
6122 - the local variable PID in Fcall_process, call_process_cleanup and
6123 call_process_kill, for synchronous subprocesses.
6124 record_unwind_protect is used to make sure this process is not
6125 forgotten: if the user interrupts call-process and the child
6126 process refuses to exit immediately even with two C-g's,
6127 call_process_kill adds PID's contents to deleted_pid_list before
6130 The main Emacs thread invokes waitpid only on child processes that
6131 it creates and that have not been reaped. This avoid races on
6132 platforms such as GTK, where other threads create their own
6133 subprocesses which the main thread should not reap. For example,
6134 if the main thread attempted to reap an already-reaped child, it
6135 might inadvertently reap a GTK-created process that happened to
6136 have the same process ID. */
6138 /* LIB_CHILD_HANDLER is a SIGCHLD handler that Emacs calls while doing
6139 its own SIGCHLD handling. On POSIXish systems, glib needs this to
6140 keep track of its own children. GNUstep is similar. */
6142 static void dummy_handler (int sig
) {}
6143 static signal_handler_t
volatile lib_child_handler
;
6145 /* Handle a SIGCHLD signal by looking for known child processes of
6146 Emacs whose status have changed. For each one found, record its
6149 All we do is change the status; we do not run sentinels or print
6150 notifications. That is saved for the next time keyboard input is
6151 done, in order to avoid timing errors.
6153 ** WARNING: this can be called during garbage collection.
6154 Therefore, it must not be fooled by the presence of mark bits in
6157 ** USG WARNING: Although it is not obvious from the documentation
6158 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6159 signal() before executing at least one wait(), otherwise the
6160 handler will be called again, resulting in an infinite loop. The
6161 relevant portion of the documentation reads "SIGCLD signals will be
6162 queued and the signal-catching function will be continually
6163 reentered until the queue is empty". Invoking signal() causes the
6164 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6167 ** Malloc WARNING: This should never call malloc either directly or
6168 indirectly; if it does, that is a bug */
6171 handle_child_signal (int sig
)
6173 Lisp_Object tail
, proc
;
6175 /* Find the process that signaled us, and record its status. */
6177 /* The process can have been deleted by Fdelete_process, or have
6178 been started asynchronously by Fcall_process. */
6179 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6181 bool all_pids_are_fixnums
6182 = (MOST_NEGATIVE_FIXNUM
<= TYPE_MINIMUM (pid_t
)
6183 && TYPE_MAXIMUM (pid_t
) <= MOST_POSITIVE_FIXNUM
);
6184 Lisp_Object head
= XCAR (tail
);
6189 if (all_pids_are_fixnums
? INTEGERP (xpid
) : NUMBERP (xpid
))
6192 if (INTEGERP (xpid
))
6193 deleted_pid
= XINT (xpid
);
6195 deleted_pid
= XFLOAT_DATA (xpid
);
6196 if (child_status_changed (deleted_pid
, 0, 0))
6198 if (STRINGP (XCDR (head
)))
6199 unlink (SSDATA (XCDR (head
)));
6200 XSETCAR (tail
, Qnil
);
6205 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6206 FOR_EACH_PROCESS (tail
, proc
)
6208 struct Lisp_Process
*p
= XPROCESS (proc
);
6212 && child_status_changed (p
->pid
, &status
, WUNTRACED
| WCONTINUED
))
6214 /* Change the status of the process that was found. */
6215 p
->tick
= ++process_tick
;
6216 p
->raw_status
= status
;
6217 p
->raw_status_new
= 1;
6219 /* If process has terminated, stop waiting for its output. */
6220 if (WIFSIGNALED (status
) || WIFEXITED (status
))
6222 bool clear_desc_flag
= 0;
6225 clear_desc_flag
= 1;
6227 /* clear_desc_flag avoids a compiler bug in Microsoft C. */
6228 if (clear_desc_flag
)
6230 FD_CLR (p
->infd
, &input_wait_mask
);
6231 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6237 lib_child_handler (sig
);
6238 #ifdef NS_IMPL_GNUSTEP
6239 /* NSTask in GNUstep sets its child handler each time it is called.
6240 So we must re-set ours. */
6241 catch_child_signal();
6246 deliver_child_signal (int sig
)
6248 deliver_process_signal (sig
, handle_child_signal
);
6253 exec_sentinel_error_handler (Lisp_Object error_val
)
6255 cmd_error_internal (error_val
, "error in process sentinel: ");
6257 update_echo_area ();
6258 Fsleep_for (make_number (2), Qnil
);
6263 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6265 Lisp_Object sentinel
, odeactivate
;
6266 struct Lisp_Process
*p
= XPROCESS (proc
);
6268 bool outer_running_asynch_code
= running_asynch_code
;
6269 int waiting
= waiting_for_user_input_p
;
6271 if (inhibit_sentinels
) {
6276 /* No need to gcpro these, because all we do with them later
6277 is test them for EQness, and none of them should be a string. */
6278 odeactivate
= Vdeactivate_mark
;
6280 Lisp_Object obuffer
, okeymap
;
6281 XSETBUFFER (obuffer
, current_buffer
);
6282 okeymap
= BVAR (current_buffer
, keymap
);
6285 /* There's no good reason to let sentinels change the current
6286 buffer, and many callers of accept-process-output, sit-for, and
6287 friends don't expect current-buffer to be changed from under them. */
6288 record_unwind_current_buffer ();
6290 sentinel
= p
->sentinel
;
6292 /* Inhibit quit so that random quits don't screw up a running filter. */
6293 specbind (Qinhibit_quit
, Qt
);
6294 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6296 /* In case we get recursively called,
6297 and we already saved the match data nonrecursively,
6298 save the same match data in safely recursive fashion. */
6299 if (outer_running_asynch_code
)
6302 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6303 restore_search_regs ();
6304 record_unwind_save_match_data ();
6305 Fset_match_data (tem
, Qt
);
6308 /* For speed, if a search happens within this code,
6309 save the match data in a special nonrecursive fashion. */
6310 running_asynch_code
= 1;
6312 internal_condition_case_1 (read_process_output_call
,
6313 list3 (sentinel
, proc
, reason
),
6314 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6315 exec_sentinel_error_handler
);
6317 /* If we saved the match data nonrecursively, restore it now. */
6318 restore_search_regs ();
6319 running_asynch_code
= outer_running_asynch_code
;
6321 Vdeactivate_mark
= odeactivate
;
6323 /* Restore waiting_for_user_input_p as it was
6324 when we were called, in case the filter clobbered it. */
6325 waiting_for_user_input_p
= waiting
;
6328 if (! EQ (Fcurrent_buffer (), obuffer
)
6329 || ! EQ (current_buffer
->keymap
, okeymap
))
6331 /* But do it only if the caller is actually going to read events.
6332 Otherwise there's no need to make him wake up, and it could
6333 cause trouble (for example it would make sit_for return). */
6334 if (waiting_for_user_input_p
== -1)
6335 record_asynch_buffer_change ();
6340 /* Report all recent events of a change in process status
6341 (either run the sentinel or output a message).
6342 This is usually done while Emacs is waiting for keyboard input
6343 but can be done at other times.
6345 Return positive if any input was received from WAIT_PROC (or from
6346 any process if WAIT_PROC is null), zero if input was attempted but
6347 none received, and negative if we didn't even try. */
6350 status_notify (struct Lisp_Process
*deleting_process
,
6351 struct Lisp_Process
*wait_proc
)
6354 Lisp_Object tail
, msg
;
6355 struct gcpro gcpro1
, gcpro2
;
6356 int got_some_input
= -1;
6360 /* We need to gcpro tail; if read_process_output calls a filter
6361 which deletes a process and removes the cons to which tail points
6362 from Vprocess_alist, and then causes a GC, tail is an unprotected
6366 /* Set this now, so that if new processes are created by sentinels
6367 that we run, we get called again to handle their status changes. */
6368 update_tick
= process_tick
;
6370 FOR_EACH_PROCESS (tail
, proc
)
6373 register struct Lisp_Process
*p
= XPROCESS (proc
);
6375 if (p
->tick
!= p
->update_tick
)
6377 p
->update_tick
= p
->tick
;
6379 /* If process is still active, read any output that remains. */
6380 while (! EQ (p
->filter
, Qt
)
6381 && ! EQ (p
->status
, Qconnect
)
6382 && ! EQ (p
->status
, Qlisten
)
6383 /* Network or serial process not stopped: */
6384 && ! EQ (p
->command
, Qt
)
6386 && p
!= deleting_process
)
6388 int nread
= read_process_output (proc
, p
->infd
);
6389 if (got_some_input
< nread
)
6390 got_some_input
= nread
;
6395 /* Get the text to use for the message. */
6396 if (p
->raw_status_new
)
6398 msg
= status_message (p
);
6400 /* If process is terminated, deactivate it or delete it. */
6402 if (CONSP (p
->status
))
6403 symbol
= XCAR (p
->status
);
6405 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6406 || EQ (symbol
, Qclosed
))
6408 if (delete_exited_processes
)
6409 remove_process (proc
);
6411 deactivate_process (proc
);
6414 /* The actions above may have further incremented p->tick.
6415 So set p->update_tick again so that an error in the sentinel will
6416 not cause this code to be run again. */
6417 p
->update_tick
= p
->tick
;
6418 /* Now output the message suitably. */
6419 exec_sentinel (proc
, msg
);
6423 update_mode_lines
= 24; /* In case buffers use %s in mode-line-format. */
6425 return got_some_input
;
6428 DEFUN ("internal-default-process-sentinel", Finternal_default_process_sentinel
,
6429 Sinternal_default_process_sentinel
, 2, 2, 0,
6430 doc
: /* Function used as default sentinel for processes.
6431 This inserts a status message into the process's buffer, if there is one. */)
6432 (Lisp_Object proc
, Lisp_Object msg
)
6434 Lisp_Object buffer
, symbol
;
6435 struct Lisp_Process
*p
;
6436 CHECK_PROCESS (proc
);
6437 p
= XPROCESS (proc
);
6441 symbol
= XCAR (symbol
);
6443 if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6446 struct buffer
*old
= current_buffer
;
6447 ptrdiff_t opoint
, opoint_byte
;
6448 ptrdiff_t before
, before_byte
;
6450 /* Avoid error if buffer is deleted
6451 (probably that's why the process is dead, too). */
6452 if (!BUFFER_LIVE_P (XBUFFER (buffer
)))
6454 Fset_buffer (buffer
);
6456 if (NILP (BVAR (current_buffer
, enable_multibyte_characters
)))
6457 msg
= (code_convert_string_norecord
6458 (msg
, Vlocale_coding_system
, 1));
6461 opoint_byte
= PT_BYTE
;
6462 /* Insert new output into buffer
6463 at the current end-of-output marker,
6464 thus preserving logical ordering of input and output. */
6465 if (XMARKER (p
->mark
)->buffer
)
6466 Fgoto_char (p
->mark
);
6468 SET_PT_BOTH (ZV
, ZV_BYTE
);
6471 before_byte
= PT_BYTE
;
6473 tem
= BVAR (current_buffer
, read_only
);
6474 bset_read_only (current_buffer
, Qnil
);
6475 insert_string ("\nProcess ");
6476 { /* FIXME: temporary kludge. */
6477 Lisp_Object tem2
= p
->name
; Finsert (1, &tem2
); }
6478 insert_string (" ");
6480 bset_read_only (current_buffer
, tem
);
6481 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6483 if (opoint
>= before
)
6484 SET_PT_BOTH (opoint
+ (PT
- before
),
6485 opoint_byte
+ (PT_BYTE
- before_byte
));
6487 SET_PT_BOTH (opoint
, opoint_byte
);
6489 set_buffer_internal (old
);
6495 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6496 Sset_process_coding_system
, 1, 3, 0,
6497 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6498 DECODING will be used to decode subprocess output and ENCODING to
6499 encode subprocess input. */)
6500 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6502 register struct Lisp_Process
*p
;
6504 CHECK_PROCESS (process
);
6505 p
= XPROCESS (process
);
6507 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6509 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6510 Fcheck_coding_system (decoding
);
6511 Fcheck_coding_system (encoding
);
6512 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6513 pset_decode_coding_system (p
, decoding
);
6514 pset_encode_coding_system (p
, encoding
);
6515 setup_process_coding_systems (process
);
6520 DEFUN ("process-coding-system",
6521 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6522 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6523 (register Lisp_Object process
)
6525 CHECK_PROCESS (process
);
6526 return Fcons (XPROCESS (process
)->decode_coding_system
,
6527 XPROCESS (process
)->encode_coding_system
);
6530 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6531 Sset_process_filter_multibyte
, 2, 2, 0,
6532 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6533 If FLAG is non-nil, the filter is given multibyte strings.
6534 If FLAG is nil, the filter is given unibyte strings. In this case,
6535 all character code conversion except for end-of-line conversion is
6537 (Lisp_Object process
, Lisp_Object flag
)
6539 register struct Lisp_Process
*p
;
6541 CHECK_PROCESS (process
);
6542 p
= XPROCESS (process
);
6544 pset_decode_coding_system
6545 (p
, raw_text_coding_system (p
->decode_coding_system
));
6546 setup_process_coding_systems (process
);
6551 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6552 Sprocess_filter_multibyte_p
, 1, 1, 0,
6553 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6554 (Lisp_Object process
)
6556 register struct Lisp_Process
*p
;
6557 struct coding_system
*coding
;
6559 CHECK_PROCESS (process
);
6560 p
= XPROCESS (process
);
6561 coding
= proc_decode_coding_system
[p
->infd
];
6562 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6571 add_gpm_wait_descriptor (int desc
)
6573 add_keyboard_wait_descriptor (desc
);
6577 delete_gpm_wait_descriptor (int desc
)
6579 delete_keyboard_wait_descriptor (desc
);
6584 # ifdef USABLE_SIGIO
6586 /* Return true if *MASK has a bit set
6587 that corresponds to one of the keyboard input descriptors. */
6590 keyboard_bit_set (fd_set
*mask
)
6594 for (fd
= 0; fd
<= max_input_desc
; fd
++)
6595 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6596 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6603 #else /* not subprocesses */
6605 /* Defined on msdos.c. */
6606 extern int sys_select (int, fd_set
*, fd_set
*, fd_set
*,
6607 struct timespec
*, void *);
6609 /* Implementation of wait_reading_process_output, assuming that there
6610 are no subprocesses. Used only by the MS-DOS build.
6612 Wait for timeout to elapse and/or keyboard input to be available.
6616 If negative, gobble data immediately available but don't wait for any.
6619 an additional duration to wait, measured in nanoseconds
6620 If TIME_LIMIT is zero, then:
6621 If NSECS == 0, there is no limit.
6622 If NSECS > 0, the timeout consists of NSECS only.
6623 If NSECS < 0, gobble data immediately, as if TIME_LIMIT were negative.
6626 0 to ignore keyboard input, or
6627 1 to return when input is available, or
6628 -1 means caller will actually read the input, so don't throw to
6631 see full version for other parameters. We know that wait_proc will
6632 always be NULL, since `subprocesses' isn't defined.
6634 DO_DISPLAY means redisplay should be done to show subprocess
6635 output that arrives.
6637 Return positive if we received input from WAIT_PROC (or from any
6638 process if WAIT_PROC is null), zero if we attempted to receive
6639 input but got none, and negative if we didn't even try. */
6642 wait_reading_process_output (intmax_t time_limit
, int nsecs
, int read_kbd
,
6644 Lisp_Object wait_for_cell
,
6645 struct Lisp_Process
*wait_proc
, int just_wait_proc
)
6648 struct timespec end_time
, timeout
;
6655 else if (TYPE_MAXIMUM (time_t) < time_limit
)
6656 time_limit
= TYPE_MAXIMUM (time_t);
6658 /* What does time_limit really mean? */
6659 if (time_limit
|| nsecs
> 0)
6661 timeout
= make_timespec (time_limit
, nsecs
);
6662 end_time
= timespec_add (current_timespec (), timeout
);
6665 /* Turn off periodic alarms (in case they are in use)
6666 and then turn off any other atimers,
6667 because the select emulator uses alarms. */
6669 turn_on_atimers (0);
6673 bool timeout_reduced_for_timers
= 0;
6674 fd_set waitchannels
;
6677 /* If calling from keyboard input, do not quit
6678 since we want to return C-g as an input character.
6679 Otherwise, do pending quit if requested. */
6683 /* Exit now if the cell we're waiting for became non-nil. */
6684 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6687 /* Compute time from now till when time limit is up. */
6688 /* Exit if already run out. */
6691 /* A negative timeout means
6692 gobble output available now
6693 but don't wait at all. */
6695 timeout
= make_timespec (0, 0);
6697 else if (time_limit
|| nsecs
> 0)
6699 struct timespec now
= current_timespec ();
6700 if (timespec_cmp (end_time
, now
) <= 0)
6702 timeout
= timespec_sub (end_time
, now
);
6706 timeout
= make_timespec (100000, 0);
6709 /* If our caller will not immediately handle keyboard events,
6710 run timer events directly.
6711 (Callers that will immediately read keyboard events
6712 call timer_delay on their own.) */
6713 if (NILP (wait_for_cell
))
6715 struct timespec timer_delay
;
6719 unsigned old_timers_run
= timers_run
;
6720 timer_delay
= timer_check ();
6721 if (timers_run
!= old_timers_run
&& do_display
)
6722 /* We must retry, since a timer may have requeued itself
6723 and that could alter the time delay. */
6724 redisplay_preserve_echo_area (14);
6728 while (!detect_input_pending ());
6730 /* If there is unread keyboard input, also return. */
6732 && requeued_events_pending_p ())
6735 if (timespec_valid_p (timer_delay
) && nsecs
>= 0)
6737 if (timespec_cmp (timer_delay
, timeout
) < 0)
6739 timeout
= timer_delay
;
6740 timeout_reduced_for_timers
= 1;
6745 /* Cause C-g and alarm signals to take immediate action,
6746 and cause input available signals to zero out timeout. */
6748 set_waiting_for_input (&timeout
);
6750 /* If a frame has been newly mapped and needs updating,
6751 reprocess its display stuff. */
6752 if (frame_garbaged
&& do_display
)
6754 clear_waiting_for_input ();
6755 redisplay_preserve_echo_area (15);
6757 set_waiting_for_input (&timeout
);
6760 /* Wait till there is something to do. */
6761 FD_ZERO (&waitchannels
);
6762 if (read_kbd
&& detect_input_pending ())
6766 if (read_kbd
|| !NILP (wait_for_cell
))
6767 FD_SET (0, &waitchannels
);
6768 nfds
= pselect (1, &waitchannels
, NULL
, NULL
, &timeout
, NULL
);
6773 /* Make C-g and alarm signals set flags again */
6774 clear_waiting_for_input ();
6776 /* If we woke up due to SIGWINCH, actually change size now. */
6777 do_pending_window_change (0);
6779 if ((time_limit
|| nsecs
) && nfds
== 0 && ! timeout_reduced_for_timers
)
6780 /* We waited the full specified time, so return now. */
6785 /* If the system call was interrupted, then go around the
6787 if (xerrno
== EINTR
)
6788 FD_ZERO (&waitchannels
);
6790 report_file_errno ("Failed select", Qnil
, xerrno
);
6793 /* Check for keyboard input */
6796 && detect_input_pending_run_timers (do_display
))
6798 swallow_events (do_display
);
6799 if (detect_input_pending_run_timers (do_display
))
6803 /* If there is unread keyboard input, also return. */
6805 && requeued_events_pending_p ())
6808 /* If wait_for_cell. check for keyboard input
6809 but don't run any timers.
6810 ??? (It seems wrong to me to check for keyboard
6811 input at all when wait_for_cell, but the code
6812 has been this way since July 1994.
6813 Try changing this after version 19.31.) */
6814 if (! NILP (wait_for_cell
)
6815 && detect_input_pending ())
6817 swallow_events (do_display
);
6818 if (detect_input_pending ())
6822 /* Exit now if the cell we're waiting for became non-nil. */
6823 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6832 #endif /* not subprocesses */
6834 /* The following functions are needed even if async subprocesses are
6835 not supported. Some of them are no-op stubs in that case. */
6837 /* Add DESC to the set of keyboard input descriptors. */
6840 add_keyboard_wait_descriptor (int desc
)
6842 #ifdef subprocesses /* actually means "not MSDOS" */
6843 FD_SET (desc
, &input_wait_mask
);
6844 FD_SET (desc
, &non_process_wait_mask
);
6845 if (desc
> max_input_desc
)
6846 max_input_desc
= desc
;
6850 /* From now on, do not expect DESC to give keyboard input. */
6853 delete_keyboard_wait_descriptor (int desc
)
6856 FD_CLR (desc
, &input_wait_mask
);
6857 FD_CLR (desc
, &non_process_wait_mask
);
6858 delete_input_desc (desc
);
6862 /* Setup coding systems of PROCESS. */
6865 setup_process_coding_systems (Lisp_Object process
)
6868 struct Lisp_Process
*p
= XPROCESS (process
);
6870 int outch
= p
->outfd
;
6871 Lisp_Object coding_system
;
6873 if (inch
< 0 || outch
< 0)
6876 if (!proc_decode_coding_system
[inch
])
6877 proc_decode_coding_system
[inch
] = xmalloc (sizeof (struct coding_system
));
6878 coding_system
= p
->decode_coding_system
;
6879 if (EQ (p
->filter
, Qinternal_default_process_filter
)
6880 && BUFFERP (p
->buffer
))
6882 if (NILP (BVAR (XBUFFER (p
->buffer
), enable_multibyte_characters
)))
6883 coding_system
= raw_text_coding_system (coding_system
);
6885 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
6887 if (!proc_encode_coding_system
[outch
])
6888 proc_encode_coding_system
[outch
] = xmalloc (sizeof (struct coding_system
));
6889 setup_coding_system (p
->encode_coding_system
,
6890 proc_encode_coding_system
[outch
]);
6894 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
6895 doc
: /* Return the (or a) process associated with BUFFER.
6896 BUFFER may be a buffer or the name of one. */)
6897 (register Lisp_Object buffer
)
6900 register Lisp_Object buf
, tail
, proc
;
6902 if (NILP (buffer
)) return Qnil
;
6903 buf
= Fget_buffer (buffer
);
6904 if (NILP (buf
)) return Qnil
;
6906 FOR_EACH_PROCESS (tail
, proc
)
6907 if (EQ (XPROCESS (proc
)->buffer
, buf
))
6909 #endif /* subprocesses */
6913 DEFUN ("process-inherit-coding-system-flag",
6914 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
6916 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
6917 If this flag is t, `buffer-file-coding-system' of the buffer
6918 associated with PROCESS will inherit the coding system used to decode
6919 the process output. */)
6920 (register Lisp_Object process
)
6923 CHECK_PROCESS (process
);
6924 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
6926 /* Ignore the argument and return the value of
6927 inherit-process-coding-system. */
6928 return inherit_process_coding_system
? Qt
: Qnil
;
6932 /* Kill all processes associated with `buffer'.
6933 If `buffer' is nil, kill all processes */
6936 kill_buffer_processes (Lisp_Object buffer
)
6939 Lisp_Object tail
, proc
;
6941 FOR_EACH_PROCESS (tail
, proc
)
6942 if (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
))
6944 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6945 Fdelete_process (proc
);
6946 else if (XPROCESS (proc
)->infd
>= 0)
6947 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6949 #else /* subprocesses */
6950 /* Since we have no subprocesses, this does nothing. */
6951 #endif /* subprocesses */
6954 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
,
6955 Swaiting_for_user_input_p
, 0, 0, 0,
6956 doc
: /* Return non-nil if Emacs is waiting for input from the user.
6957 This is intended for use by asynchronous process output filters and sentinels. */)
6961 return (waiting_for_user_input_p
? Qt
: Qnil
);
6967 /* Stop reading input from keyboard sources. */
6970 hold_keyboard_input (void)
6975 /* Resume reading input from keyboard sources. */
6978 unhold_keyboard_input (void)
6983 /* Return true if keyboard input is on hold, zero otherwise. */
6986 kbd_on_hold_p (void)
6988 return kbd_is_on_hold
;
6992 /* Enumeration of and access to system processes a-la ps(1). */
6994 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
6996 doc
: /* Return a list of numerical process IDs of all running processes.
6997 If this functionality is unsupported, return nil.
6999 See `process-attributes' for getting attributes of a process given its ID. */)
7002 return list_system_processes ();
7005 DEFUN ("process-attributes", Fprocess_attributes
,
7006 Sprocess_attributes
, 1, 1, 0,
7007 doc
: /* Return attributes of the process given by its PID, a number.
7009 Value is an alist where each element is a cons cell of the form
7013 If this functionality is unsupported, the value is nil.
7015 See `list-system-processes' for getting a list of all process IDs.
7017 The KEYs of the attributes that this function may return are listed
7018 below, together with the type of the associated VALUE (in parentheses).
7019 Not all platforms support all of these attributes; unsupported
7020 attributes will not appear in the returned alist.
7021 Unless explicitly indicated otherwise, numbers can have either
7022 integer or floating point values.
7024 euid -- Effective user User ID of the process (number)
7025 user -- User name corresponding to euid (string)
7026 egid -- Effective user Group ID of the process (number)
7027 group -- Group name corresponding to egid (string)
7028 comm -- Command name (executable name only) (string)
7029 state -- Process state code, such as "S", "R", or "T" (string)
7030 ppid -- Parent process ID (number)
7031 pgrp -- Process group ID (number)
7032 sess -- Session ID, i.e. process ID of session leader (number)
7033 ttname -- Controlling tty name (string)
7034 tpgid -- ID of foreground process group on the process's tty (number)
7035 minflt -- number of minor page faults (number)
7036 majflt -- number of major page faults (number)
7037 cminflt -- cumulative number of minor page faults (number)
7038 cmajflt -- cumulative number of major page faults (number)
7039 utime -- user time used by the process, in (current-time) format,
7040 which is a list of integers (HIGH LOW USEC PSEC)
7041 stime -- system time used by the process (current-time)
7042 time -- sum of utime and stime (current-time)
7043 cutime -- user time used by the process and its children (current-time)
7044 cstime -- system time used by the process and its children (current-time)
7045 ctime -- sum of cutime and cstime (current-time)
7046 pri -- priority of the process (number)
7047 nice -- nice value of the process (number)
7048 thcount -- process thread count (number)
7049 start -- time the process started (current-time)
7050 vsize -- virtual memory size of the process in KB's (number)
7051 rss -- resident set size of the process in KB's (number)
7052 etime -- elapsed time the process is running, in (HIGH LOW USEC PSEC) format
7053 pcpu -- percents of CPU time used by the process (floating-point number)
7054 pmem -- percents of total physical memory used by process's resident set
7055 (floating-point number)
7056 args -- command line which invoked the process (string). */)
7059 return system_process_attributes (pid
);
7063 /* Arrange to catch SIGCHLD if this hasn't already been arranged.
7064 Invoke this after init_process_emacs, and after glib and/or GNUstep
7065 futz with the SIGCHLD handler, but before Emacs forks any children.
7066 This function's caller should block SIGCHLD. */
7069 catch_child_signal (void)
7071 struct sigaction action
, old_action
;
7073 emacs_sigaction_init (&action
, deliver_child_signal
);
7074 block_child_signal (&oldset
);
7075 sigaction (SIGCHLD
, &action
, &old_action
);
7076 eassert (! (old_action
.sa_flags
& SA_SIGINFO
));
7078 if (old_action
.sa_handler
!= deliver_child_signal
)
7080 = (old_action
.sa_handler
== SIG_DFL
|| old_action
.sa_handler
== SIG_IGN
7082 : old_action
.sa_handler
);
7083 unblock_child_signal (&oldset
);
7085 #endif /* subprocesses */
7088 /* This is not called "init_process" because that is the name of a
7089 Mach system call, so it would cause problems on Darwin systems. */
7091 init_process_emacs (void)
7096 inhibit_sentinels
= 0;
7099 if (! noninteractive
|| initialized
)
7102 #if defined HAVE_GLIB && !defined WINDOWSNT
7103 /* Tickle glib's child-handling code. Ask glib to wait for Emacs itself;
7104 this should always fail, but is enough to initialize glib's
7105 private SIGCHLD handler, allowing catch_child_signal to copy
7106 it into lib_child_handler. */
7107 g_source_unref (g_child_watch_source_new (getpid ()));
7109 catch_child_signal ();
7112 FD_ZERO (&input_wait_mask
);
7113 FD_ZERO (&non_keyboard_wait_mask
);
7114 FD_ZERO (&non_process_wait_mask
);
7115 FD_ZERO (&write_mask
);
7116 max_process_desc
= max_input_desc
= -1;
7117 memset (fd_callback_info
, 0, sizeof (fd_callback_info
));
7119 #ifdef NON_BLOCKING_CONNECT
7120 FD_ZERO (&connect_wait_mask
);
7121 num_pending_connects
= 0;
7124 #ifdef ADAPTIVE_READ_BUFFERING
7125 process_output_delay_count
= 0;
7126 process_output_skip
= 0;
7129 /* Don't do this, it caused infinite select loops. The display
7130 method should call add_keyboard_wait_descriptor on stdin if it
7133 FD_SET (0, &input_wait_mask
);
7136 Vprocess_alist
= Qnil
;
7137 deleted_pid_list
= Qnil
;
7138 for (i
= 0; i
< FD_SETSIZE
; i
++)
7140 chan_process
[i
] = Qnil
;
7141 proc_buffered_char
[i
] = -1;
7143 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7144 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7145 #ifdef DATAGRAM_SOCKETS
7146 memset (datagram_address
, 0, sizeof datagram_address
);
7150 Lisp_Object subfeatures
= Qnil
;
7151 const struct socket_options
*sopt
;
7153 #define ADD_SUBFEATURE(key, val) \
7154 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7156 #ifdef NON_BLOCKING_CONNECT
7157 ADD_SUBFEATURE (QCnowait
, Qt
);
7159 #ifdef DATAGRAM_SOCKETS
7160 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7162 #ifdef HAVE_SEQPACKET
7163 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7165 #ifdef HAVE_LOCAL_SOCKETS
7166 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7168 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7170 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7172 #ifdef HAVE_GETSOCKNAME
7173 ADD_SUBFEATURE (QCservice
, Qt
);
7175 ADD_SUBFEATURE (QCserver
, Qt
);
7177 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7178 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7180 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7183 #if defined (DARWIN_OS)
7184 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7185 processes. As such, we only change the default value. */
7188 char const *release
= (STRINGP (Voperating_system_release
)
7189 ? SSDATA (Voperating_system_release
)
7191 if (!release
|| !release
[0] || (release
[0] < '7' && release
[1] == '.')) {
7192 Vprocess_connection_type
= Qnil
;
7196 #endif /* subprocesses */
7201 syms_of_process (void)
7203 #include "process.x"
7207 DEFSYM (Qprocessp
, "processp");
7208 DEFSYM (Qrun
, "run");
7209 DEFSYM (Qstop
, "stop");
7210 DEFSYM (Qsignal
, "signal");
7212 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7215 Qexit = intern_c_string ("exit");
7216 staticpro (&Qexit); */
7218 DEFSYM (Qopen
, "open");
7219 DEFSYM (Qclosed
, "closed");
7220 DEFSYM (Qconnect
, "connect");
7221 DEFSYM (Qfailed
, "failed");
7222 DEFSYM (Qlisten
, "listen");
7223 DEFSYM (Qlocal
, "local");
7224 DEFSYM (Qipv4
, "ipv4");
7226 DEFSYM (Qipv6
, "ipv6");
7228 DEFSYM (Qdatagram
, "datagram");
7229 DEFSYM (Qseqpacket
, "seqpacket");
7231 DEFSYM (QCport
, ":port");
7232 DEFSYM (QCspeed
, ":speed");
7233 DEFSYM (QCprocess
, ":process");
7235 DEFSYM (QCbytesize
, ":bytesize");
7236 DEFSYM (QCstopbits
, ":stopbits");
7237 DEFSYM (QCparity
, ":parity");
7238 DEFSYM (Qodd
, "odd");
7239 DEFSYM (Qeven
, "even");
7240 DEFSYM (QCflowcontrol
, ":flowcontrol");
7243 DEFSYM (QCsummary
, ":summary");
7245 DEFSYM (Qreal
, "real");
7246 DEFSYM (Qnetwork
, "network");
7247 DEFSYM (Qserial
, "serial");
7248 DEFSYM (QCbuffer
, ":buffer");
7249 DEFSYM (QChost
, ":host");
7250 DEFSYM (QCservice
, ":service");
7251 DEFSYM (QClocal
, ":local");
7252 DEFSYM (QCremote
, ":remote");
7253 DEFSYM (QCcoding
, ":coding");
7254 DEFSYM (QCserver
, ":server");
7255 DEFSYM (QCnowait
, ":nowait");
7256 DEFSYM (QCsentinel
, ":sentinel");
7257 DEFSYM (QClog
, ":log");
7258 DEFSYM (QCnoquery
, ":noquery");
7259 DEFSYM (QCstop
, ":stop");
7260 DEFSYM (QCoptions
, ":options");
7261 DEFSYM (QCplist
, ":plist");
7263 DEFSYM (Qlast_nonmenu_event
, "last-nonmenu-event");
7265 staticpro (&Vprocess_alist
);
7266 staticpro (&deleted_pid_list
);
7268 #endif /* subprocesses */
7270 DEFSYM (QCname
, ":name");
7271 DEFSYM (QCtype
, ":type");
7273 DEFSYM (Qeuid
, "euid");
7274 DEFSYM (Qegid
, "egid");
7275 DEFSYM (Quser
, "user");
7276 DEFSYM (Qgroup
, "group");
7277 DEFSYM (Qcomm
, "comm");
7278 DEFSYM (Qstate
, "state");
7279 DEFSYM (Qppid
, "ppid");
7280 DEFSYM (Qpgrp
, "pgrp");
7281 DEFSYM (Qsess
, "sess");
7282 DEFSYM (Qttname
, "ttname");
7283 DEFSYM (Qtpgid
, "tpgid");
7284 DEFSYM (Qminflt
, "minflt");
7285 DEFSYM (Qmajflt
, "majflt");
7286 DEFSYM (Qcminflt
, "cminflt");
7287 DEFSYM (Qcmajflt
, "cmajflt");
7288 DEFSYM (Qutime
, "utime");
7289 DEFSYM (Qstime
, "stime");
7290 DEFSYM (Qtime
, "time");
7291 DEFSYM (Qcutime
, "cutime");
7292 DEFSYM (Qcstime
, "cstime");
7293 DEFSYM (Qctime
, "ctime");
7295 DEFSYM (Qinternal_default_process_sentinel
,
7296 "internal-default-process-sentinel");
7297 DEFSYM (Qinternal_default_process_filter
,
7298 "internal-default-process-filter");
7300 DEFSYM (Qpri
, "pri");
7301 DEFSYM (Qnice
, "nice");
7302 DEFSYM (Qthcount
, "thcount");
7303 DEFSYM (Qstart
, "start");
7304 DEFSYM (Qvsize
, "vsize");
7305 DEFSYM (Qrss
, "rss");
7306 DEFSYM (Qetime
, "etime");
7307 DEFSYM (Qpcpu
, "pcpu");
7308 DEFSYM (Qpmem
, "pmem");
7309 DEFSYM (Qargs
, "args");
7311 DEFVAR_BOOL ("delete-exited-processes", delete_exited_processes
,
7312 doc
: /* Non-nil means delete processes immediately when they exit.
7313 A value of nil means don't delete them until `list-processes' is run. */);
7315 delete_exited_processes
= 1;
7318 DEFVAR_LISP ("process-connection-type", Vprocess_connection_type
,
7319 doc
: /* Control type of device used to communicate with subprocesses.
7320 Values are nil to use a pipe, or t or `pty' to use a pty.
7321 The value has no effect if the system has no ptys or if all ptys are busy:
7322 then a pipe is used in any case.
7323 The value takes effect when `start-process' is called. */);
7324 Vprocess_connection_type
= Qt
;
7326 #ifdef ADAPTIVE_READ_BUFFERING
7327 DEFVAR_LISP ("process-adaptive-read-buffering", Vprocess_adaptive_read_buffering
,
7328 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7329 On some systems, when Emacs reads the output from a subprocess, the output data
7330 is read in very small blocks, potentially resulting in very poor performance.
7331 This behavior can be remedied to some extent by setting this variable to a
7332 non-nil value, as it will automatically delay reading from such processes, to
7333 allow them to produce more output before Emacs tries to read it.
7334 If the value is t, the delay is reset after each write to the process; any other
7335 non-nil value means that the delay is not reset on write.
7336 The variable takes effect when `start-process' is called. */);
7337 Vprocess_adaptive_read_buffering
= Qt
;
7339 #endif /* subprocesses */