1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995,
3 1996, 1998, 1999, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2008, 2009, 2010 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/>. */
25 /* This file is split into two parts by the following preprocessor
26 conditional. The 'then' clause contains all of the support for
27 asynchronous subprocesses. The 'else' clause contains stub
28 versions of some of the asynchronous subprocess routines that are
29 often called elsewhere in Emacs, so we don't have to #ifdef the
30 sections that call them. */
36 #include <sys/types.h> /* some typedefs are used in sys/file.h */
40 #ifdef HAVE_INTTYPES_H
52 /* Only MS-DOS does not define `subprocesses'. */
55 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
56 #include <sys/socket.h>
58 #include <netinet/in.h>
59 #include <arpa/inet.h>
61 /* Are local (unix) sockets supported? */
62 #if defined (HAVE_SYS_UN_H)
63 #if !defined (AF_LOCAL) && defined (AF_UNIX)
64 #define AF_LOCAL AF_UNIX
67 #define HAVE_LOCAL_SOCKETS
71 #endif /* HAVE_SOCKETS */
73 #if defined(HAVE_SYS_IOCTL_H)
74 #include <sys/ioctl.h>
75 #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5)
77 #endif /* HAVE_PTYS and no O_NDELAY */
78 #endif /* HAVE_SYS_IOCTL_H */
84 /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */
86 #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H)
87 /* sys/ioctl.h may have been included already */
89 #include <sys/ioctl.h>
100 #include <netinet/in.h>
101 #include <arpa/nameser.h>
105 #endif /* subprocesses */
113 #include "character.h"
117 #include "termhooks.h"
118 #include "termopts.h"
119 #include "commands.h"
120 #include "keyboard.h"
121 #include "blockinput.h"
122 #include "dispextern.h"
123 #include "composite.h"
125 #include "sysselect.h"
126 #include "syssignal.h"
129 #if defined (USE_GTK) || defined (HAVE_GCONF)
130 #include "xgselect.h"
131 #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */
135 Lisp_Object Qprocessp
;
136 Lisp_Object Qrun
, Qstop
, Qsignal
;
137 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
138 Lisp_Object Qlocal
, Qipv4
, Qdatagram
, Qseqpacket
;
139 Lisp_Object Qreal
, Qnetwork
, Qserial
;
143 Lisp_Object QCport
, QCspeed
, QCprocess
;
144 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
145 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
146 Lisp_Object QCbuffer
, QChost
, QCservice
;
147 Lisp_Object QClocal
, QCremote
, QCcoding
;
148 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
149 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
150 Lisp_Object Qlast_nonmenu_event
;
151 /* QCfamily is declared and initialized in xfaces.c,
152 QCfilter in keyboard.c. */
153 extern Lisp_Object QCfamily
, QCfilter
;
155 /* Qexit is declared and initialized in eval.c. */
157 /* QCfamily is defined in xfaces.c. */
158 extern Lisp_Object QCfamily
;
159 /* QCfilter is defined in keyboard.c. */
160 extern Lisp_Object QCfilter
;
163 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
164 #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork))
165 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
166 #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial))
168 #define NETCONN_P(p) 0
169 #define NETCONN1_P(p) 0
170 #define SERIALCONN_P(p) 0
171 #define SERIALCONN1_P(p) 0
172 #endif /* HAVE_SOCKETS */
174 /* Define first descriptor number available for subprocesses. */
175 #define FIRST_PROC_DESC 3
177 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
180 #if !defined (SIGCHLD) && defined (SIGCLD)
181 #define SIGCHLD SIGCLD
184 extern char *get_operating_system_release (void);
186 /* Serial processes require termios or Windows. */
187 #if defined (HAVE_TERMIOS) || defined (WINDOWSNT)
192 /* From sysdep.c or w32.c */
193 extern int serial_open (char *port
);
194 extern void serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
);
201 /* t means use pty, nil means use a pipe,
202 maybe other values to come. */
203 static Lisp_Object Vprocess_connection_type
;
205 /* These next two vars are non-static since sysdep.c uses them in the
206 emulation of `select'. */
207 /* Number of events of change of status of a process. */
209 /* Number of events for which the user or sentinel has been notified. */
212 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
214 #ifdef BROKEN_NON_BLOCKING_CONNECT
215 #undef NON_BLOCKING_CONNECT
217 #ifndef NON_BLOCKING_CONNECT
220 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
221 #if defined (O_NONBLOCK) || defined (O_NDELAY)
222 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
223 #define NON_BLOCKING_CONNECT
224 #endif /* EWOULDBLOCK || EINPROGRESS */
225 #endif /* O_NONBLOCK || O_NDELAY */
226 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
227 #endif /* HAVE_SELECT */
228 #endif /* HAVE_SOCKETS */
229 #endif /* NON_BLOCKING_CONNECT */
230 #endif /* BROKEN_NON_BLOCKING_CONNECT */
232 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
233 this system. We need to read full packets, so we need a
234 "non-destructive" select. So we require either native select,
235 or emulation of select using FIONREAD. */
237 #ifdef BROKEN_DATAGRAM_SOCKETS
238 #undef DATAGRAM_SOCKETS
240 #ifndef DATAGRAM_SOCKETS
242 #if defined (HAVE_SELECT) || defined (FIONREAD)
243 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
244 #define DATAGRAM_SOCKETS
245 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
246 #endif /* HAVE_SELECT || FIONREAD */
247 #endif /* HAVE_SOCKETS */
248 #endif /* DATAGRAM_SOCKETS */
249 #endif /* BROKEN_DATAGRAM_SOCKETS */
251 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
252 # define HAVE_SEQPACKET
255 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
256 #ifdef EMACS_HAS_USECS
257 #define ADAPTIVE_READ_BUFFERING
261 #ifdef ADAPTIVE_READ_BUFFERING
262 #define READ_OUTPUT_DELAY_INCREMENT 10000
263 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
264 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
266 /* Number of processes which have a non-zero read_output_delay,
267 and therefore might be delayed for adaptive read buffering. */
269 static int process_output_delay_count
;
271 /* Non-zero if any process has non-nil read_output_skip. */
273 static int process_output_skip
;
275 /* Non-nil means to delay reading process output to improve buffering.
276 A value of t means that delay is reset after each send, any other
277 non-nil value does not reset the delay. A value of nil disables
278 adaptive read buffering completely. */
279 static Lisp_Object Vprocess_adaptive_read_buffering
;
281 #define process_output_delay_count 0
284 static int keyboard_bit_set (SELECT_TYPE
*);
285 static void deactivate_process (Lisp_Object
);
286 static void status_notify (struct Lisp_Process
*);
287 static int read_process_output (Lisp_Object
, int);
288 static void create_pty (Lisp_Object
);
290 /* If we support a window system, turn on the code to poll periodically
291 to detect C-g. It isn't actually used when doing interrupt input. */
292 #ifdef HAVE_WINDOW_SYSTEM
293 #define POLL_FOR_INPUT
296 static Lisp_Object
get_process (register Lisp_Object name
);
297 static void exec_sentinel (Lisp_Object proc
, Lisp_Object reason
);
299 #endif /* subprocesses */
301 extern int timers_run
;
303 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
304 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
305 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
306 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
307 Lisp_Object QCname
, QCtype
;
309 /* Non-zero if keyboard input is on hold, zero otherwise. */
311 static int kbd_is_on_hold
;
313 /* Nonzero means delete a process right away if it exits. */
314 static int delete_exited_processes
;
318 /* Mask of bits indicating the descriptors that we wait for input on. */
320 static SELECT_TYPE input_wait_mask
;
322 /* Mask that excludes keyboard input descriptor(s). */
324 static SELECT_TYPE non_keyboard_wait_mask
;
326 /* Mask that excludes process input descriptor(s). */
328 static SELECT_TYPE non_process_wait_mask
;
330 /* Mask for the gpm mouse input descriptor. */
332 static SELECT_TYPE gpm_wait_mask
;
334 #ifdef NON_BLOCKING_CONNECT
335 /* Mask of bits indicating the descriptors that we wait for connect to
336 complete on. Once they complete, they are removed from this mask
337 and added to the input_wait_mask and non_keyboard_wait_mask. */
339 static SELECT_TYPE connect_wait_mask
;
341 /* Number of bits set in connect_wait_mask. */
342 static int num_pending_connects
;
344 #define IF_NON_BLOCKING_CONNECT(s) s
345 #else /* NON_BLOCKING_CONNECT */
346 #define IF_NON_BLOCKING_CONNECT(s)
347 #endif /* NON_BLOCKING_CONNECT */
349 /* The largest descriptor currently in use for a process object. */
350 static int max_process_desc
;
352 /* The largest descriptor currently in use for keyboard input. */
353 static int max_keyboard_desc
;
355 /* The largest descriptor currently in use for gpm mouse input. */
356 static int max_gpm_desc
;
358 /* Indexed by descriptor, gives the process (if any) for that descriptor */
359 Lisp_Object chan_process
[MAXDESC
];
361 /* Alist of elements (NAME . PROCESS) */
362 Lisp_Object Vprocess_alist
;
364 /* Buffered-ahead input char from process, indexed by channel.
365 -1 means empty (no char is buffered).
366 Used on sys V where the only way to tell if there is any
367 output from the process is to read at least one char.
368 Always -1 on systems that support FIONREAD. */
370 /* Don't make static; need to access externally. */
371 int proc_buffered_char
[MAXDESC
];
373 /* Table of `struct coding-system' for each process. */
374 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
375 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
377 #ifdef DATAGRAM_SOCKETS
378 /* Table of `partner address' for datagram sockets. */
379 struct sockaddr_and_len
{
382 } datagram_address
[MAXDESC
];
383 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
384 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
386 #define DATAGRAM_CHAN_P(chan) (0)
387 #define DATAGRAM_CONN_P(proc) (0)
390 /* Maximum number of bytes to send to a pty without an eof. */
391 static int pty_max_bytes
;
393 /* Nonzero means don't run process sentinels. This is used
395 int inhibit_sentinels
;
401 /* The file name of the pty opened by allocate_pty. */
403 static char pty_name
[24];
406 /* Compute the Lisp form of the process status, p->status, from
407 the numeric status that was returned by `wait'. */
409 static Lisp_Object
status_convert (int);
412 update_status (struct Lisp_Process
*p
)
414 eassert (p
->raw_status_new
);
415 p
->status
= status_convert (p
->raw_status
);
416 p
->raw_status_new
= 0;
419 /* Convert a process status word in Unix format to
420 the list that we use internally. */
423 status_convert (int w
)
426 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
427 else if (WIFEXITED (w
))
428 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
429 WCOREDUMP (w
) ? Qt
: Qnil
));
430 else if (WIFSIGNALED (w
))
431 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
432 WCOREDUMP (w
) ? Qt
: Qnil
));
437 /* Given a status-list, extract the three pieces of information
438 and store them individually through the three pointers. */
441 decode_status (Lisp_Object l
, Lisp_Object
*symbol
, int *code
, int *coredump
)
455 *code
= XFASTINT (XCAR (tem
));
457 *coredump
= !NILP (tem
);
461 /* Return a string describing a process status list. */
464 status_message (struct Lisp_Process
*p
)
466 Lisp_Object status
= p
->status
;
469 Lisp_Object string
, string2
;
471 decode_status (status
, &symbol
, &code
, &coredump
);
473 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
476 synchronize_system_messages_locale ();
477 signame
= strsignal (code
);
479 string
= build_string ("unknown");
484 string
= make_unibyte_string (signame
, strlen (signame
));
485 if (! NILP (Vlocale_coding_system
))
486 string
= (code_convert_string_norecord
487 (string
, Vlocale_coding_system
, 0));
488 c1
= STRING_CHAR ((char *) SDATA (string
));
491 Faset (string
, make_number (0), make_number (c2
));
493 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
494 return concat2 (string
, string2
);
496 else if (EQ (symbol
, Qexit
))
499 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
501 return build_string ("finished\n");
502 string
= Fnumber_to_string (make_number (code
));
503 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
504 return concat3 (build_string ("exited abnormally with code "),
507 else if (EQ (symbol
, Qfailed
))
509 string
= Fnumber_to_string (make_number (code
));
510 string2
= build_string ("\n");
511 return concat3 (build_string ("failed with code "),
515 return Fcopy_sequence (Fsymbol_name (symbol
));
520 /* Open an available pty, returning a file descriptor.
521 Return -1 on failure.
522 The file name of the terminal corresponding to the pty
523 is left in the variable pty_name. */
534 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
535 for (i
= 0; i
< 16; i
++)
538 struct stat stb
; /* Used in some PTY_OPEN. */
539 #ifdef PTY_NAME_SPRINTF
542 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
543 #endif /* no PTY_NAME_SPRINTF */
547 #else /* no PTY_OPEN */
549 { /* Some systems name their pseudoterminals so that there are gaps in
550 the usual sequence - for example, on HP9000/S700 systems, there
551 are no pseudoterminals with names ending in 'f'. So we wait for
552 three failures in a row before deciding that we've reached the
554 int failed_count
= 0;
556 if (stat (pty_name
, &stb
) < 0)
559 if (failed_count
>= 3)
566 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
568 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
571 #endif /* no PTY_OPEN */
575 /* check to make certain that both sides are available
576 this avoids a nasty yet stupid bug in rlogins */
577 #ifdef PTY_TTY_NAME_SPRINTF
580 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
581 #endif /* no PTY_TTY_NAME_SPRINTF */
582 if (access (pty_name
, 6) != 0)
597 #endif /* HAVE_PTYS */
600 make_process (Lisp_Object name
)
602 register Lisp_Object val
, tem
, name1
;
603 register struct Lisp_Process
*p
;
607 p
= allocate_process ();
615 p
->raw_status_new
= 0;
617 p
->mark
= Fmake_marker ();
618 p
->kill_without_query
= 0;
620 #ifdef ADAPTIVE_READ_BUFFERING
621 p
->adaptive_read_buffering
= 0;
622 p
->read_output_delay
= 0;
623 p
->read_output_skip
= 0;
626 /* If name is already in use, modify it until it is unused. */
631 tem
= Fget_process (name1
);
632 if (NILP (tem
)) break;
633 sprintf (suffix
, "<%d>", i
);
634 name1
= concat2 (name
, build_string (suffix
));
638 XSETPROCESS (val
, p
);
639 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
644 remove_process (register Lisp_Object proc
)
646 register Lisp_Object pair
;
648 pair
= Frassq (proc
, Vprocess_alist
);
649 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
651 deactivate_process (proc
);
654 /* Setup coding systems of PROCESS. */
657 setup_process_coding_systems (Lisp_Object process
)
659 struct Lisp_Process
*p
= XPROCESS (process
);
661 int outch
= p
->outfd
;
662 Lisp_Object coding_system
;
664 if (inch
< 0 || outch
< 0)
667 if (!proc_decode_coding_system
[inch
])
668 proc_decode_coding_system
[inch
]
669 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
670 coding_system
= p
->decode_coding_system
;
671 if (! NILP (p
->filter
))
673 else if (BUFFERP (p
->buffer
))
675 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
676 coding_system
= raw_text_coding_system (coding_system
);
678 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
680 if (!proc_encode_coding_system
[outch
])
681 proc_encode_coding_system
[outch
]
682 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
683 setup_coding_system (p
->encode_coding_system
,
684 proc_encode_coding_system
[outch
]);
687 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
688 doc
: /* Return t if OBJECT is a process. */)
691 return PROCESSP (object
) ? Qt
: Qnil
;
694 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
695 doc
: /* Return the process named NAME, or nil if there is none. */)
696 (register Lisp_Object name
)
701 return Fcdr (Fassoc (name
, Vprocess_alist
));
704 /* This is how commands for the user decode process arguments. It
705 accepts a process, a process name, a buffer, a buffer name, or nil.
706 Buffers denote the first process in the buffer, and nil denotes the
710 get_process (register Lisp_Object name
)
712 register Lisp_Object proc
, obj
;
715 obj
= Fget_process (name
);
717 obj
= Fget_buffer (name
);
719 error ("Process %s does not exist", SDATA (name
));
721 else if (NILP (name
))
722 obj
= Fcurrent_buffer ();
726 /* Now obj should be either a buffer object or a process object.
730 proc
= Fget_buffer_process (obj
);
732 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
744 /* Fdelete_process promises to immediately forget about the process, but in
745 reality, Emacs needs to remember those processes until they have been
746 treated by sigchld_handler; otherwise this handler would consider the
747 process as being synchronous and say that the synchronous process is
749 static Lisp_Object deleted_pid_list
;
752 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
753 doc
: /* Delete PROCESS: kill it and forget about it immediately.
754 PROCESS may be a process, a buffer, the name of a process or buffer, or
755 nil, indicating the current buffer's process. */)
756 (register Lisp_Object process
)
758 register struct Lisp_Process
*p
;
760 process
= get_process (process
);
761 p
= XPROCESS (process
);
763 p
->raw_status_new
= 0;
764 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
766 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
767 p
->tick
= ++process_tick
;
769 redisplay_preserve_echo_area (13);
771 else if (p
->infd
>= 0)
775 /* Assignment to EMACS_INT stops GCC whining about limited range
777 EMACS_INT pid
= p
->pid
;
779 /* No problem storing the pid here, as it is still in Vprocess_alist. */
780 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
781 /* GC treated elements set to nil. */
782 Fdelq (Qnil
, deleted_pid_list
));
783 /* If the process has already signaled, remove it from the list. */
784 if (p
->raw_status_new
)
787 if (CONSP (p
->status
))
788 symbol
= XCAR (p
->status
);
789 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
791 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
795 Fkill_process (process
, Qnil
);
796 /* Do this now, since remove_process will make sigchld_handler do nothing. */
798 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
799 p
->tick
= ++process_tick
;
801 redisplay_preserve_echo_area (13);
804 remove_process (process
);
808 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
809 doc
: /* Return the status of PROCESS.
810 The returned value is one of the following symbols:
811 run -- for a process that is running.
812 stop -- for a process stopped but continuable.
813 exit -- for a process that has exited.
814 signal -- for a process that has got a fatal signal.
815 open -- for a network stream connection that is open.
816 listen -- for a network stream server that is listening.
817 closed -- for a network stream connection that is closed.
818 connect -- when waiting for a non-blocking connection to complete.
819 failed -- when a non-blocking connection has failed.
820 nil -- if arg is a process name and no such process exists.
821 PROCESS may be a process, a buffer, the name of a process, or
822 nil, indicating the current buffer's process. */)
823 (register Lisp_Object process
)
825 register struct Lisp_Process
*p
;
826 register Lisp_Object status
;
828 if (STRINGP (process
))
829 process
= Fget_process (process
);
831 process
= get_process (process
);
836 p
= XPROCESS (process
);
837 if (p
->raw_status_new
)
841 status
= XCAR (status
);
842 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
844 if (EQ (status
, Qexit
))
846 else if (EQ (p
->command
, Qt
))
848 else if (EQ (status
, Qrun
))
854 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
856 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
857 If PROCESS has not yet exited or died, return 0. */)
858 (register Lisp_Object process
)
860 CHECK_PROCESS (process
);
861 if (XPROCESS (process
)->raw_status_new
)
862 update_status (XPROCESS (process
));
863 if (CONSP (XPROCESS (process
)->status
))
864 return XCAR (XCDR (XPROCESS (process
)->status
));
865 return make_number (0);
868 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
869 doc
: /* Return the process id of PROCESS.
870 This is the pid of the external process which PROCESS uses or talks to.
871 For a network connection, this value is nil. */)
872 (register Lisp_Object process
)
874 /* Assignment to EMACS_INT stops GCC whining about limited range of
878 CHECK_PROCESS (process
);
879 pid
= XPROCESS (process
)->pid
;
880 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
883 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
884 doc
: /* Return the name of PROCESS, as a string.
885 This is the name of the program invoked in PROCESS,
886 possibly modified to make it unique among process names. */)
887 (register Lisp_Object process
)
889 CHECK_PROCESS (process
);
890 return XPROCESS (process
)->name
;
893 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
894 doc
: /* Return the command that was executed to start PROCESS.
895 This is a list of strings, the first string being the program executed
896 and the rest of the strings being the arguments given to it.
897 For a network or serial process, this is nil (process is running) or t
898 \(process is stopped). */)
899 (register Lisp_Object process
)
901 CHECK_PROCESS (process
);
902 return XPROCESS (process
)->command
;
905 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
906 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
907 This is the terminal that the process itself reads and writes on,
908 not the name of the pty that Emacs uses to talk with that terminal. */)
909 (register Lisp_Object process
)
911 CHECK_PROCESS (process
);
912 return XPROCESS (process
)->tty_name
;
915 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
917 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
918 (register Lisp_Object process
, Lisp_Object buffer
)
920 struct Lisp_Process
*p
;
922 CHECK_PROCESS (process
);
924 CHECK_BUFFER (buffer
);
925 p
= XPROCESS (process
);
927 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
928 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
929 setup_process_coding_systems (process
);
933 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
935 doc
: /* Return the buffer PROCESS is associated with.
936 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
937 (register Lisp_Object process
)
939 CHECK_PROCESS (process
);
940 return XPROCESS (process
)->buffer
;
943 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
945 doc
: /* Return the marker for the end of the last output from PROCESS. */)
946 (register Lisp_Object process
)
948 CHECK_PROCESS (process
);
949 return XPROCESS (process
)->mark
;
952 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
954 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
955 A value of t means stop accepting output from the process.
957 When a process has a filter, its buffer is not used for output.
958 Instead, each time it does output, the entire string of output is
959 passed to the filter.
961 The filter gets two arguments: the process and the string of output.
962 The string argument is normally a multibyte string, except:
963 - if the process' input coding system is no-conversion or raw-text,
964 it is a unibyte string (the non-converted input), or else
965 - if `default-enable-multibyte-characters' is nil, it is a unibyte
966 string (the result of converting the decoded input multibyte
967 string to unibyte with `string-make-unibyte'). */)
968 (register Lisp_Object process
, Lisp_Object filter
)
970 struct Lisp_Process
*p
;
972 CHECK_PROCESS (process
);
973 p
= XPROCESS (process
);
975 /* Don't signal an error if the process' input file descriptor
976 is closed. This could make debugging Lisp more difficult,
977 for example when doing something like
979 (setq process (start-process ...))
981 (set-process-filter process ...) */
985 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
987 FD_CLR (p
->infd
, &input_wait_mask
);
988 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
990 else if (EQ (p
->filter
, Qt
)
991 /* Network or serial process not stopped: */
992 && !EQ (p
->command
, Qt
))
994 FD_SET (p
->infd
, &input_wait_mask
);
995 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1000 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1001 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1002 setup_process_coding_systems (process
);
1006 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1008 doc
: /* Returns the filter function of PROCESS; nil if none.
1009 See `set-process-filter' for more info on filter functions. */)
1010 (register Lisp_Object process
)
1012 CHECK_PROCESS (process
);
1013 return XPROCESS (process
)->filter
;
1016 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1018 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1019 The sentinel is called as a function when the process changes state.
1020 It gets two arguments: the process, and a string describing the change. */)
1021 (register Lisp_Object process
, Lisp_Object sentinel
)
1023 struct Lisp_Process
*p
;
1025 CHECK_PROCESS (process
);
1026 p
= XPROCESS (process
);
1028 p
->sentinel
= sentinel
;
1029 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1030 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1034 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1036 doc
: /* Return the sentinel of PROCESS; nil if none.
1037 See `set-process-sentinel' for more info on sentinels. */)
1038 (register Lisp_Object process
)
1040 CHECK_PROCESS (process
);
1041 return XPROCESS (process
)->sentinel
;
1044 DEFUN ("set-process-window-size", Fset_process_window_size
,
1045 Sset_process_window_size
, 3, 3, 0,
1046 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1047 (register Lisp_Object process
, Lisp_Object height
, Lisp_Object width
)
1049 CHECK_PROCESS (process
);
1050 CHECK_NATNUM (height
);
1051 CHECK_NATNUM (width
);
1053 if (XPROCESS (process
)->infd
< 0
1054 || set_window_size (XPROCESS (process
)->infd
,
1055 XINT (height
), XINT (width
)) <= 0)
1061 DEFUN ("set-process-inherit-coding-system-flag",
1062 Fset_process_inherit_coding_system_flag
,
1063 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1064 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1065 If the second argument FLAG is non-nil, then the variable
1066 `buffer-file-coding-system' of the buffer associated with PROCESS
1067 will be bound to the value of the coding system used to decode
1070 This is useful when the coding system specified for the process buffer
1071 leaves either the character code conversion or the end-of-line conversion
1072 unspecified, or if the coding system used to decode the process output
1073 is more appropriate for saving the process buffer.
1075 Binding the variable `inherit-process-coding-system' to non-nil before
1076 starting the process is an alternative way of setting the inherit flag
1077 for the process which will run. */)
1078 (register Lisp_Object process
, Lisp_Object flag
)
1080 CHECK_PROCESS (process
);
1081 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1085 DEFUN ("set-process-query-on-exit-flag",
1086 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1088 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1089 If the second argument FLAG is non-nil, Emacs will query the user before
1090 exiting or killing a buffer if PROCESS is running. */)
1091 (register Lisp_Object process
, Lisp_Object flag
)
1093 CHECK_PROCESS (process
);
1094 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1098 DEFUN ("process-query-on-exit-flag",
1099 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1101 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1102 (register Lisp_Object process
)
1104 CHECK_PROCESS (process
);
1105 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1108 #ifdef DATAGRAM_SOCKETS
1109 Lisp_Object
Fprocess_datagram_address (Lisp_Object process
);
1112 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1114 doc
: /* Return the contact info of PROCESS; t for a real child.
1115 For a network or serial connection, the value depends on the optional
1116 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1117 SERVICE) for a network connection or (PORT SPEED) for a serial
1118 connection. If KEY is t, the complete contact information for the
1119 connection is returned, else the specific value for the keyword KEY is
1120 returned. See `make-network-process' or `make-serial-process' for a
1121 list of keywords. */)
1122 (register Lisp_Object process
, Lisp_Object key
)
1124 Lisp_Object contact
;
1126 CHECK_PROCESS (process
);
1127 contact
= XPROCESS (process
)->childp
;
1129 #ifdef DATAGRAM_SOCKETS
1130 if (DATAGRAM_CONN_P (process
)
1131 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1132 contact
= Fplist_put (contact
, QCremote
,
1133 Fprocess_datagram_address (process
));
1136 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1138 if (NILP (key
) && NETCONN_P (process
))
1139 return Fcons (Fplist_get (contact
, QChost
),
1140 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1141 if (NILP (key
) && SERIALCONN_P (process
))
1142 return Fcons (Fplist_get (contact
, QCport
),
1143 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1144 return Fplist_get (contact
, key
);
1147 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1149 doc
: /* Return the plist of PROCESS. */)
1150 (register Lisp_Object process
)
1152 CHECK_PROCESS (process
);
1153 return XPROCESS (process
)->plist
;
1156 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1158 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1159 (register Lisp_Object process
, Lisp_Object plist
)
1161 CHECK_PROCESS (process
);
1164 XPROCESS (process
)->plist
= plist
;
1168 #if 0 /* Turned off because we don't currently record this info
1169 in the process. Perhaps add it. */
1170 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1171 doc
: /* Return the connection type of PROCESS.
1172 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1173 a socket connection. */)
1174 (Lisp_Object process
)
1176 return XPROCESS (process
)->type
;
1180 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1181 doc
: /* Return the connection type of PROCESS.
1182 The value is either the symbol `real', `network', or `serial'.
1183 PROCESS may be a process, a buffer, the name of a process or buffer, or
1184 nil, indicating the current buffer's process. */)
1185 (Lisp_Object process
)
1188 proc
= get_process (process
);
1189 return XPROCESS (proc
)->type
;
1193 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1195 doc
: /* Convert network ADDRESS from internal format to a string.
1196 A 4 or 5 element vector represents an IPv4 address (with port number).
1197 An 8 or 9 element vector represents an IPv6 address (with port number).
1198 If optional second argument OMIT-PORT is non-nil, don't include a port
1199 number in the string, even when present in ADDRESS.
1200 Returns nil if format of ADDRESS is invalid. */)
1201 (Lisp_Object address
, Lisp_Object omit_port
)
1206 if (STRINGP (address
)) /* AF_LOCAL */
1209 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1211 register struct Lisp_Vector
*p
= XVECTOR (address
);
1212 Lisp_Object args
[10];
1215 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1217 args
[0] = build_string ("%d.%d.%d.%d");
1220 else if (p
->size
== 5)
1222 args
[0] = build_string ("%d.%d.%d.%d:%d");
1225 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1227 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1230 else if (p
->size
== 9)
1232 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1238 for (i
= 0; i
< nargs
; i
++)
1240 EMACS_INT element
= XINT (p
->contents
[i
]);
1242 if (element
< 0 || element
> 65535)
1245 if (nargs
<= 5 /* IPv4 */
1246 && i
< 4 /* host, not port */
1250 args
[i
+1] = p
->contents
[i
];
1253 return Fformat (nargs
+1, args
);
1256 if (CONSP (address
))
1258 Lisp_Object args
[2];
1259 args
[0] = build_string ("<Family %d>");
1260 args
[1] = Fcar (address
);
1261 return Fformat (2, args
);
1269 list_processes_1 (Lisp_Object query_only
)
1271 register Lisp_Object tail
, tem
;
1272 Lisp_Object proc
, minspace
, tem1
;
1273 register struct Lisp_Process
*p
;
1275 int w_proc
, w_buffer
, w_tty
;
1277 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1279 w_proc
= 4; /* Proc */
1280 w_buffer
= 6; /* Buffer */
1281 w_tty
= 0; /* Omit if no ttys */
1283 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1287 proc
= Fcdr (XCAR (tail
));
1288 p
= XPROCESS (proc
);
1291 if (!NILP (query_only
) && p
->kill_without_query
)
1293 if (STRINGP (p
->name
)
1294 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1296 if (!NILP (p
->buffer
))
1298 if (NILP (XBUFFER (p
->buffer
)->name
))
1301 w_buffer
= 8; /* (Killed) */
1303 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1306 if (STRINGP (p
->tty_name
)
1307 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1311 XSETFASTINT (i_status
, w_proc
+ 1);
1312 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1315 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1316 XSETFASTINT (i_command
, XFASTINT (i_tty
) + w_tty
+ 1);
1321 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1324 XSETFASTINT (minspace
, 1);
1326 set_buffer_internal (XBUFFER (Vstandard_output
));
1327 current_buffer
->undo_list
= Qt
;
1329 current_buffer
->truncate_lines
= Qt
;
1331 write_string ("Proc", -1);
1332 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1333 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1336 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1338 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1339 write_string ("\n", -1);
1341 write_string ("----", -1);
1342 Findent_to (i_status
, minspace
); write_string ("------", -1);
1343 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1346 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1348 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1349 write_string ("\n", -1);
1351 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1355 proc
= Fcdr (XCAR (tail
));
1356 p
= XPROCESS (proc
);
1359 if (!NILP (query_only
) && p
->kill_without_query
)
1362 Finsert (1, &p
->name
);
1363 Findent_to (i_status
, minspace
);
1365 if (p
->raw_status_new
)
1368 if (CONSP (p
->status
))
1369 symbol
= XCAR (p
->status
);
1371 if (EQ (symbol
, Qsignal
))
1374 tem
= Fcar (Fcdr (p
->status
));
1375 Fprinc (symbol
, Qnil
);
1377 else if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1379 if (EQ (symbol
, Qexit
))
1380 write_string ("closed", -1);
1381 else if (EQ (p
->command
, Qt
))
1382 write_string ("stopped", -1);
1383 else if (EQ (symbol
, Qrun
))
1384 write_string ("open", -1);
1386 Fprinc (symbol
, Qnil
);
1388 else if (SERIALCONN1_P (p
))
1390 write_string ("running", -1);
1393 Fprinc (symbol
, Qnil
);
1395 if (EQ (symbol
, Qexit
))
1398 tem
= Fcar (Fcdr (p
->status
));
1401 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1402 write_string (tembuf
, -1);
1406 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1409 Findent_to (i_buffer
, minspace
);
1410 if (NILP (p
->buffer
))
1411 insert_string ("(none)");
1412 else if (NILP (XBUFFER (p
->buffer
)->name
))
1413 insert_string ("(Killed)");
1415 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1419 Findent_to (i_tty
, minspace
);
1420 if (STRINGP (p
->tty_name
))
1421 Finsert (1, &p
->tty_name
);
1424 Findent_to (i_command
, minspace
);
1426 if (EQ (p
->status
, Qlisten
))
1428 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1429 if (INTEGERP (port
))
1430 port
= Fnumber_to_string (port
);
1432 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1433 sprintf (tembuf
, "(network %s server on %s)\n",
1434 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1435 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1436 insert_string (tembuf
);
1438 else if (NETCONN1_P (p
))
1440 /* For a local socket, there is no host name,
1441 so display service instead. */
1442 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1443 if (!STRINGP (host
))
1445 host
= Fplist_get (p
->childp
, QCservice
);
1446 if (INTEGERP (host
))
1447 host
= Fnumber_to_string (host
);
1450 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1451 sprintf (tembuf
, "(network %s connection to %s)\n",
1452 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1453 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1454 insert_string (tembuf
);
1456 else if (SERIALCONN1_P (p
))
1458 Lisp_Object port
= Fplist_get (p
->childp
, QCport
);
1459 Lisp_Object speed
= Fplist_get (p
->childp
, QCspeed
);
1460 insert_string ("(serial port ");
1462 insert_string (SDATA (port
));
1464 insert_string ("?");
1465 if (INTEGERP (speed
))
1467 sprintf (tembuf
, " at %ld b/s", (long) XINT (speed
));
1468 insert_string (tembuf
);
1470 insert_string (")\n");
1484 insert_string (" ");
1486 insert_string ("\n");
1491 status_notify (NULL
);
1492 redisplay_preserve_echo_area (13);
1497 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1498 doc
: /* Display a list of all processes.
1499 If optional argument QUERY-ONLY is non-nil, only processes with
1500 the query-on-exit flag set will be listed.
1501 Any process listed as exited or signaled is actually eliminated
1502 after the listing is made. */)
1503 (Lisp_Object query_only
)
1505 internal_with_output_to_temp_buffer ("*Process List*",
1506 list_processes_1
, query_only
);
1510 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1511 doc
: /* Return a list of all processes. */)
1514 return Fmapcar (Qcdr
, Vprocess_alist
);
1517 /* Starting asynchronous inferior processes. */
1519 static Lisp_Object
start_process_unwind (Lisp_Object proc
);
1521 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1522 doc
: /* Start a program in a subprocess. Return the process object for it.
1523 NAME is name for process. It is modified if necessary to make it unique.
1524 BUFFER is the buffer (or buffer name) to associate with the process.
1526 Process output (both standard output and standard error streams) goes
1527 at end of BUFFER, unless you specify an output stream or filter
1528 function to handle the output. BUFFER may also be nil, meaning that
1529 this process is not associated with any buffer.
1531 PROGRAM is the program file name. It is searched for in PATH. If
1532 nil, just associate a pty with the buffer. Remaining arguments are
1533 strings to give program as arguments.
1535 If you want to separate standard output from standard error, invoke
1536 the command through a shell and redirect one of them using the shell
1539 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1540 (int nargs
, register Lisp_Object
*args
)
1542 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1543 register unsigned char **new_argv
;
1545 int count
= SPECPDL_INDEX ();
1549 buffer
= Fget_buffer_create (buffer
);
1551 /* Make sure that the child will be able to chdir to the current
1552 buffer's current directory, or its unhandled equivalent. We
1553 can't just have the child check for an error when it does the
1554 chdir, since it's in a vfork.
1556 We have to GCPRO around this because Fexpand_file_name and
1557 Funhandled_file_name_directory might call a file name handling
1558 function. The argument list is protected by the caller, so all
1559 we really have to worry about is buffer. */
1561 struct gcpro gcpro1
, gcpro2
;
1563 current_dir
= current_buffer
->directory
;
1565 GCPRO2 (buffer
, current_dir
);
1567 current_dir
= Funhandled_file_name_directory (current_dir
);
1568 if (NILP (current_dir
))
1569 /* If the file name handler says that current_dir is unreachable, use
1570 a sensible default. */
1571 current_dir
= build_string ("~/");
1572 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1573 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1574 report_file_error ("Setting current directory",
1575 Fcons (current_buffer
->directory
, Qnil
));
1581 CHECK_STRING (name
);
1585 if (!NILP (program
))
1586 CHECK_STRING (program
);
1588 proc
= make_process (name
);
1589 /* If an error occurs and we can't start the process, we want to
1590 remove it from the process list. This means that each error
1591 check in create_process doesn't need to call remove_process
1592 itself; it's all taken care of here. */
1593 record_unwind_protect (start_process_unwind
, proc
);
1595 XPROCESS (proc
)->childp
= Qt
;
1596 XPROCESS (proc
)->plist
= Qnil
;
1597 XPROCESS (proc
)->type
= Qreal
;
1598 XPROCESS (proc
)->buffer
= buffer
;
1599 XPROCESS (proc
)->sentinel
= Qnil
;
1600 XPROCESS (proc
)->filter
= Qnil
;
1601 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1603 #ifdef ADAPTIVE_READ_BUFFERING
1604 XPROCESS (proc
)->adaptive_read_buffering
1605 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1606 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1609 /* Make the process marker point into the process buffer (if any). */
1610 if (BUFFERP (buffer
))
1611 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1612 BUF_ZV (XBUFFER (buffer
)),
1613 BUF_ZV_BYTE (XBUFFER (buffer
)));
1616 /* Decide coding systems for communicating with the process. Here
1617 we don't setup the structure coding_system nor pay attention to
1618 unibyte mode. They are done in create_process. */
1620 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1621 Lisp_Object coding_systems
= Qt
;
1622 Lisp_Object val
, *args2
;
1623 struct gcpro gcpro1
, gcpro2
;
1625 val
= Vcoding_system_for_read
;
1628 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1629 args2
[0] = Qstart_process
;
1630 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1631 GCPRO2 (proc
, current_dir
);
1632 if (!NILP (program
))
1633 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1635 if (CONSP (coding_systems
))
1636 val
= XCAR (coding_systems
);
1637 else if (CONSP (Vdefault_process_coding_system
))
1638 val
= XCAR (Vdefault_process_coding_system
);
1640 XPROCESS (proc
)->decode_coding_system
= val
;
1642 val
= Vcoding_system_for_write
;
1645 if (EQ (coding_systems
, Qt
))
1647 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1648 args2
[0] = Qstart_process
;
1649 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1650 GCPRO2 (proc
, current_dir
);
1651 if (!NILP (program
))
1652 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1655 if (CONSP (coding_systems
))
1656 val
= XCDR (coding_systems
);
1657 else if (CONSP (Vdefault_process_coding_system
))
1658 val
= XCDR (Vdefault_process_coding_system
);
1660 XPROCESS (proc
)->encode_coding_system
= val
;
1664 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1665 XPROCESS (proc
)->decoding_carryover
= 0;
1666 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1668 XPROCESS (proc
)->inherit_coding_system_flag
1669 = !(NILP (buffer
) || !inherit_process_coding_system
);
1671 if (!NILP (program
))
1673 /* If program file name is not absolute, search our path for it.
1674 Put the name we will really use in TEM. */
1675 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1676 && !(SCHARS (program
) > 1
1677 && IS_DEVICE_SEP (SREF (program
, 1))))
1679 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1682 GCPRO4 (name
, program
, buffer
, current_dir
);
1683 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1686 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1687 tem
= Fexpand_file_name (tem
, Qnil
);
1691 if (!NILP (Ffile_directory_p (program
)))
1692 error ("Specified program for new process is a directory");
1696 /* If program file name starts with /: for quoting a magic name,
1698 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1699 && SREF (tem
, 1) == ':')
1700 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1703 struct gcpro gcpro1
;
1706 /* Encode the file name and put it in NEW_ARGV.
1707 That's where the child will use it to execute the program. */
1708 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1710 /* Here we encode arguments by the coding system used for sending
1711 data to the process. We don't support using different coding
1712 systems for encoding arguments and for encoding data sent to the
1715 for (i
= 3; i
< nargs
; i
++)
1717 tem
= Fcons (args
[i
], tem
);
1718 CHECK_STRING (XCAR (tem
));
1719 if (STRING_MULTIBYTE (XCAR (tem
)))
1721 code_convert_string_norecord
1722 (XCAR (tem
), XPROCESS (proc
)->encode_coding_system
, 1));
1728 /* Now that everything is encoded we can collect the strings into
1730 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1731 new_argv
[nargs
- 2] = 0;
1733 for (i
= nargs
- 3; i
>= 0; i
--)
1735 new_argv
[i
] = SDATA (XCAR (tem
));
1739 create_process (proc
, (char **) new_argv
, current_dir
);
1744 return unbind_to (count
, proc
);
1747 /* This function is the unwind_protect form for Fstart_process. If
1748 PROC doesn't have its pid set, then we know someone has signaled
1749 an error and the process wasn't started successfully, so we should
1750 remove it from the process list. */
1752 start_process_unwind (Lisp_Object proc
)
1754 if (!PROCESSP (proc
))
1757 /* Was PROC started successfully? */
1758 if (XPROCESS (proc
)->pid
== -1)
1759 remove_process (proc
);
1765 create_process_1 (struct atimer
*timer
)
1767 /* Nothing to do. */
1771 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1774 /* Mimic blocking of signals on system V, which doesn't really have it. */
1776 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1777 int sigchld_deferred
;
1780 create_process_sigchld ()
1782 signal (SIGCHLD
, create_process_sigchld
);
1784 sigchld_deferred
= 1;
1791 create_process (Lisp_Object process
, char **new_argv
, Lisp_Object current_dir
)
1793 int inchannel
, outchannel
;
1796 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1797 int wait_child_setup
[2];
1801 struct sigaction sigint_action
;
1802 struct sigaction sigquit_action
;
1804 struct sigaction sighup_action
;
1806 /* Use volatile to protect variables from being clobbered by longjmp. */
1807 volatile int forkin
, forkout
;
1808 volatile int pty_flag
= 0;
1810 extern char **environ
;
1813 inchannel
= outchannel
= -1;
1816 if (!NILP (Vprocess_connection_type
))
1817 outchannel
= inchannel
= allocate_pty ();
1821 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1822 /* On most USG systems it does not work to open the pty's tty here,
1823 then close it and reopen it in the child. */
1825 /* Don't let this terminal become our controlling terminal
1826 (in case we don't have one). */
1827 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1829 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1832 report_file_error ("Opening pty", Qnil
);
1834 forkin
= forkout
= -1;
1835 #endif /* not USG, or USG_SUBTTY_WORKS */
1839 #endif /* HAVE_PTYS */
1844 report_file_error ("Creating pipe", Qnil
);
1850 emacs_close (inchannel
);
1851 emacs_close (forkout
);
1852 report_file_error ("Creating pipe", Qnil
);
1858 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1862 tem
= pipe (wait_child_setup
);
1864 report_file_error ("Creating pipe", Qnil
);
1865 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1867 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1870 emacs_close (wait_child_setup
[0]);
1871 emacs_close (wait_child_setup
[1]);
1872 report_file_error ("Setting file descriptor flags", Qnil
);
1878 /* Replaced by close_process_descs */
1879 set_exclusive_use (inchannel
);
1880 set_exclusive_use (outchannel
);
1884 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1885 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1888 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1889 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1893 /* Record this as an active process, with its channels.
1894 As a result, child_setup will close Emacs's side of the pipes. */
1895 chan_process
[inchannel
] = process
;
1896 XPROCESS (process
)->infd
= inchannel
;
1897 XPROCESS (process
)->outfd
= outchannel
;
1899 /* Previously we recorded the tty descriptor used in the subprocess.
1900 It was only used for getting the foreground tty process, so now
1901 we just reopen the device (see emacs_get_tty_pgrp) as this is
1902 more portable (see USG_SUBTTY_WORKS above). */
1904 XPROCESS (process
)->pty_flag
= pty_flag
;
1905 XPROCESS (process
)->status
= Qrun
;
1906 setup_process_coding_systems (process
);
1908 /* Delay interrupts until we have a chance to store
1909 the new fork's pid in its process structure */
1910 sigemptyset (&blocked
);
1912 sigaddset (&blocked
, SIGCHLD
);
1914 #ifdef HAVE_WORKING_VFORK
1915 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1916 this sets the parent's signal handlers as well as the child's.
1917 So delay all interrupts whose handlers the child might munge,
1918 and record the current handlers so they can be restored later. */
1919 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1920 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1922 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1924 #endif /* HAVE_WORKING_VFORK */
1925 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1927 FD_SET (inchannel
, &input_wait_mask
);
1928 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1929 if (inchannel
> max_process_desc
)
1930 max_process_desc
= inchannel
;
1932 /* Until we store the proper pid, enable sigchld_handler
1933 to recognize an unknown pid as standing for this process.
1934 It is very important not to let this `marker' value stay
1935 in the table after this function has returned; if it does
1936 it might cause call-process to hang and subsequent asynchronous
1937 processes to get their return values scrambled. */
1938 XPROCESS (process
)->pid
= -1;
1943 /* child_setup must clobber environ on systems with true vfork.
1944 Protect it from permanent change. */
1945 char **save_environ
= environ
;
1947 current_dir
= ENCODE_FILE (current_dir
);
1952 #endif /* not WINDOWSNT */
1954 int xforkin
= forkin
;
1955 int xforkout
= forkout
;
1957 #if 0 /* This was probably a mistake--it duplicates code later on,
1958 but fails to handle all the cases. */
1959 /* Make sure SIGCHLD is not blocked in the child. */
1960 sigsetmask (SIGEMPTYMASK
);
1963 /* Make the pty be the controlling terminal of the process. */
1965 /* First, disconnect its current controlling terminal. */
1967 /* We tried doing setsid only if pty_flag, but it caused
1968 process_set_signal to fail on SGI when using a pipe. */
1970 /* Make the pty's terminal the controlling terminal. */
1971 if (pty_flag
&& xforkin
>= 0)
1974 /* We ignore the return value
1975 because faith@cs.unc.edu says that is necessary on Linux. */
1976 ioctl (xforkin
, TIOCSCTTY
, 0);
1979 #else /* not HAVE_SETSID */
1981 /* It's very important to call setpgrp here and no time
1982 afterwards. Otherwise, we lose our controlling tty which
1983 is set when we open the pty. */
1986 #endif /* not HAVE_SETSID */
1987 #if defined (HAVE_TERMIOS) && defined (LDISC1)
1988 if (pty_flag
&& xforkin
>= 0)
1991 tcgetattr (xforkin
, &t
);
1993 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1994 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1997 #if defined (NTTYDISC) && defined (TIOCSETD)
1998 if (pty_flag
&& xforkin
>= 0)
2000 /* Use new line discipline. */
2001 int ldisc
= NTTYDISC
;
2002 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2007 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2008 can do TIOCSPGRP only to the process's controlling tty. */
2011 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2012 I can't test it since I don't have 4.3. */
2013 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2016 ioctl (j
, TIOCNOTTY
, 0);
2020 /* In order to get a controlling terminal on some versions
2021 of BSD, it is necessary to put the process in pgrp 0
2022 before it opens the terminal. */
2030 #endif /* TIOCNOTTY */
2032 #if !defined (DONT_REOPEN_PTY)
2033 /*** There is a suggestion that this ought to be a
2034 conditional on TIOCSPGRP,
2035 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2036 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2037 that system does seem to need this code, even though
2038 both HAVE_SETSID and TIOCSCTTY are defined. */
2039 /* Now close the pty (if we had it open) and reopen it.
2040 This makes the pty the controlling terminal of the subprocess. */
2044 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2047 emacs_close (xforkin
);
2048 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2052 emacs_write (1, "Couldn't open the pty terminal ", 31);
2053 emacs_write (1, pty_name
, strlen (pty_name
));
2054 emacs_write (1, "\n", 1);
2059 #endif /* not DONT_REOPEN_PTY */
2061 #ifdef SETUP_SLAVE_PTY
2066 #endif /* SETUP_SLAVE_PTY */
2068 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2069 Now reenable it in the child, so it will die when we want it to. */
2071 signal (SIGHUP
, SIG_DFL
);
2073 #endif /* HAVE_PTYS */
2075 signal (SIGINT
, SIG_DFL
);
2076 signal (SIGQUIT
, SIG_DFL
);
2078 /* Stop blocking signals in the child. */
2079 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2082 child_setup_tty (xforkout
);
2084 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2085 new_argv
, 1, current_dir
);
2086 #else /* not WINDOWSNT */
2088 emacs_close (wait_child_setup
[0]);
2090 child_setup (xforkin
, xforkout
, xforkout
,
2091 new_argv
, 1, current_dir
);
2092 #endif /* not WINDOWSNT */
2094 environ
= save_environ
;
2099 /* This runs in the Emacs process. */
2103 emacs_close (forkin
);
2104 if (forkin
!= forkout
&& forkout
>= 0)
2105 emacs_close (forkout
);
2109 /* vfork succeeded. */
2110 XPROCESS (process
)->pid
= pid
;
2113 register_child (pid
, inchannel
);
2114 #endif /* WINDOWSNT */
2116 /* If the subfork execv fails, and it exits,
2117 this close hangs. I don't know why.
2118 So have an interrupt jar it loose. */
2120 struct atimer
*timer
;
2124 EMACS_SET_SECS_USECS (offset
, 1, 0);
2125 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2128 emacs_close (forkin
);
2130 cancel_atimer (timer
);
2134 if (forkin
!= forkout
&& forkout
>= 0)
2135 emacs_close (forkout
);
2139 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2142 XPROCESS (process
)->tty_name
= Qnil
;
2144 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
2145 /* Wait for child_setup to complete in case that vfork is
2146 actually defined as fork. The descriptor wait_child_setup[1]
2147 of a pipe is closed at the child side either by close-on-exec
2148 on successful execvp or the _exit call in child_setup. */
2152 emacs_close (wait_child_setup
[1]);
2153 emacs_read (wait_child_setup
[0], &dummy
, 1);
2154 emacs_close (wait_child_setup
[0]);
2159 /* Restore the signal state whether vfork succeeded or not.
2160 (We will signal an error, below, if it failed.) */
2161 #ifdef HAVE_WORKING_VFORK
2162 /* Restore the parent's signal handlers. */
2163 sigaction (SIGINT
, &sigint_action
, 0);
2164 sigaction (SIGQUIT
, &sigquit_action
, 0);
2166 sigaction (SIGHUP
, &sighup_action
, 0);
2168 #endif /* HAVE_WORKING_VFORK */
2169 /* Stop blocking signals in the parent. */
2170 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2172 /* Now generate the error if vfork failed. */
2174 report_file_error ("Doing vfork", Qnil
);
2178 create_pty (Lisp_Object process
)
2180 int inchannel
, outchannel
;
2182 /* Use volatile to protect variables from being clobbered by longjmp. */
2183 volatile int forkin
, forkout
;
2184 volatile int pty_flag
= 0;
2186 inchannel
= outchannel
= -1;
2189 if (!NILP (Vprocess_connection_type
))
2190 outchannel
= inchannel
= allocate_pty ();
2194 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2195 /* On most USG systems it does not work to open the pty's tty here,
2196 then close it and reopen it in the child. */
2198 /* Don't let this terminal become our controlling terminal
2199 (in case we don't have one). */
2200 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2202 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
2205 report_file_error ("Opening pty", Qnil
);
2206 #if defined (DONT_REOPEN_PTY)
2207 /* In the case that vfork is defined as fork, the parent process
2208 (Emacs) may send some data before the child process completes
2209 tty options setup. So we setup tty before forking. */
2210 child_setup_tty (forkout
);
2211 #endif /* DONT_REOPEN_PTY */
2213 forkin
= forkout
= -1;
2214 #endif /* not USG, or USG_SUBTTY_WORKS */
2217 #endif /* HAVE_PTYS */
2220 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2221 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2224 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
2225 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
2229 /* Record this as an active process, with its channels.
2230 As a result, child_setup will close Emacs's side of the pipes. */
2231 chan_process
[inchannel
] = process
;
2232 XPROCESS (process
)->infd
= inchannel
;
2233 XPROCESS (process
)->outfd
= outchannel
;
2235 /* Previously we recorded the tty descriptor used in the subprocess.
2236 It was only used for getting the foreground tty process, so now
2237 we just reopen the device (see emacs_get_tty_pgrp) as this is
2238 more portable (see USG_SUBTTY_WORKS above). */
2240 XPROCESS (process
)->pty_flag
= pty_flag
;
2241 XPROCESS (process
)->status
= Qrun
;
2242 setup_process_coding_systems (process
);
2244 FD_SET (inchannel
, &input_wait_mask
);
2245 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2246 if (inchannel
> max_process_desc
)
2247 max_process_desc
= inchannel
;
2249 XPROCESS (process
)->pid
= -2;
2252 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2255 XPROCESS (process
)->tty_name
= Qnil
;
2261 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2262 The address family of sa is not included in the result. */
2265 conv_sockaddr_to_lisp (struct sockaddr
*sa
, int len
)
2267 Lisp_Object address
;
2270 register struct Lisp_Vector
*p
;
2272 /* Workaround for a bug in getsockname on BSD: Names bound to
2273 sockets in the UNIX domain are inaccessible; getsockname returns
2274 a zero length name. */
2275 if (len
< OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2276 return empty_unibyte_string
;
2278 switch (sa
->sa_family
)
2282 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2283 len
= sizeof (sin
->sin_addr
) + 1;
2284 address
= Fmake_vector (make_number (len
), Qnil
);
2285 p
= XVECTOR (address
);
2286 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2287 cp
= (unsigned char *) &sin
->sin_addr
;
2293 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2294 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2295 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2296 address
= Fmake_vector (make_number (len
), Qnil
);
2297 p
= XVECTOR (address
);
2298 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2299 for (i
= 0; i
< len
; i
++)
2300 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2304 #ifdef HAVE_LOCAL_SOCKETS
2307 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2308 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2309 if (sockun
->sun_path
[i
] == 0)
2311 return make_unibyte_string (sockun
->sun_path
, i
);
2315 len
-= OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2316 address
= Fcons (make_number (sa
->sa_family
),
2317 Fmake_vector (make_number (len
), Qnil
));
2318 p
= XVECTOR (XCDR (address
));
2319 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2325 p
->contents
[i
++] = make_number (*cp
++);
2331 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2334 get_lisp_to_sockaddr_size (Lisp_Object address
, int *familyp
)
2336 register struct Lisp_Vector
*p
;
2338 if (VECTORP (address
))
2340 p
= XVECTOR (address
);
2344 return sizeof (struct sockaddr_in
);
2347 else if (p
->size
== 9)
2349 *familyp
= AF_INET6
;
2350 return sizeof (struct sockaddr_in6
);
2354 #ifdef HAVE_LOCAL_SOCKETS
2355 else if (STRINGP (address
))
2357 *familyp
= AF_LOCAL
;
2358 return sizeof (struct sockaddr_un
);
2361 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2363 struct sockaddr
*sa
;
2364 *familyp
= XINT (XCAR (address
));
2365 p
= XVECTOR (XCDR (address
));
2366 return p
->size
+ sizeof (sa
->sa_family
);
2371 /* Convert an address object (vector or string) to an internal sockaddr.
2373 The address format has been basically validated by
2374 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2375 it could have come from user data. So if FAMILY is not valid,
2376 we return after zeroing *SA. */
2379 conv_lisp_to_sockaddr (int family
, Lisp_Object address
, struct sockaddr
*sa
, int len
)
2381 register struct Lisp_Vector
*p
;
2382 register unsigned char *cp
= NULL
;
2385 memset (sa
, 0, len
);
2387 if (VECTORP (address
))
2389 p
= XVECTOR (address
);
2390 if (family
== AF_INET
)
2392 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2393 len
= sizeof (sin
->sin_addr
) + 1;
2394 i
= XINT (p
->contents
[--len
]);
2395 sin
->sin_port
= htons (i
);
2396 cp
= (unsigned char *)&sin
->sin_addr
;
2397 sa
->sa_family
= family
;
2400 else if (family
== AF_INET6
)
2402 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2403 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2404 len
= sizeof (sin6
->sin6_addr
) + 1;
2405 i
= XINT (p
->contents
[--len
]);
2406 sin6
->sin6_port
= htons (i
);
2407 for (i
= 0; i
< len
; i
++)
2408 if (INTEGERP (p
->contents
[i
]))
2410 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2413 sa
->sa_family
= family
;
2420 else if (STRINGP (address
))
2422 #ifdef HAVE_LOCAL_SOCKETS
2423 if (family
== AF_LOCAL
)
2425 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2426 cp
= SDATA (address
);
2427 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2428 sockun
->sun_path
[i
] = *cp
++;
2429 sa
->sa_family
= family
;
2436 p
= XVECTOR (XCDR (address
));
2437 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2440 for (i
= 0; i
< len
; i
++)
2441 if (INTEGERP (p
->contents
[i
]))
2442 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2445 #ifdef DATAGRAM_SOCKETS
2446 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2448 doc
: /* Get the current datagram address associated with PROCESS. */)
2449 (Lisp_Object process
)
2453 CHECK_PROCESS (process
);
2455 if (!DATAGRAM_CONN_P (process
))
2458 channel
= XPROCESS (process
)->infd
;
2459 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2460 datagram_address
[channel
].len
);
2463 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2465 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2466 Returns nil upon error setting address, ADDRESS otherwise. */)
2467 (Lisp_Object process
, Lisp_Object address
)
2472 CHECK_PROCESS (process
);
2474 if (!DATAGRAM_CONN_P (process
))
2477 channel
= XPROCESS (process
)->infd
;
2479 len
= get_lisp_to_sockaddr_size (address
, &family
);
2480 if (datagram_address
[channel
].len
!= len
)
2482 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2488 static const struct socket_options
{
2489 /* The name of this option. Should be lowercase version of option
2490 name without SO_ prefix. */
2492 /* Option level SOL_... */
2494 /* Option number SO_... */
2496 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2497 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2498 } socket_options
[] =
2500 #ifdef SO_BINDTODEVICE
2501 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2504 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2507 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2510 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2513 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2516 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2519 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2522 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2524 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2527 /* Set option OPT to value VAL on socket S.
2529 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2530 Signals an error if setting a known option fails.
2534 set_socket_option (int s
, Lisp_Object opt
, Lisp_Object val
)
2537 const struct socket_options
*sopt
;
2542 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2543 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2544 if (strcmp (name
, sopt
->name
) == 0)
2547 switch (sopt
->opttype
)
2552 optval
= NILP (val
) ? 0 : 1;
2553 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2554 &optval
, sizeof (optval
));
2562 optval
= XINT (val
);
2564 error ("Bad option value for %s", name
);
2565 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2566 &optval
, sizeof (optval
));
2570 #ifdef SO_BINDTODEVICE
2573 char devname
[IFNAMSIZ
+1];
2575 /* This is broken, at least in the Linux 2.4 kernel.
2576 To unbind, the arg must be a zero integer, not the empty string.
2577 This should work on all systems. KFS. 2003-09-23. */
2578 memset (devname
, 0, sizeof devname
);
2581 char *arg
= (char *) SDATA (val
);
2582 int len
= min (strlen (arg
), IFNAMSIZ
);
2583 memcpy (devname
, arg
, len
);
2585 else if (!NILP (val
))
2586 error ("Bad option value for %s", name
);
2587 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2596 struct linger linger
;
2599 linger
.l_linger
= 0;
2601 linger
.l_linger
= XINT (val
);
2603 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2604 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2605 &linger
, sizeof (linger
));
2615 report_file_error ("Cannot set network option",
2616 Fcons (opt
, Fcons (val
, Qnil
)));
2617 return (1 << sopt
->optbit
);
2621 DEFUN ("set-network-process-option",
2622 Fset_network_process_option
, Sset_network_process_option
,
2624 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2625 See `make-network-process' for a list of options and values.
2626 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2627 OPTION is not a supported option, return nil instead; otherwise return t. */)
2628 (Lisp_Object process
, Lisp_Object option
, Lisp_Object value
, Lisp_Object no_error
)
2631 struct Lisp_Process
*p
;
2633 CHECK_PROCESS (process
);
2634 p
= XPROCESS (process
);
2635 if (!NETCONN1_P (p
))
2636 error ("Process is not a network process");
2640 error ("Process is not running");
2642 if (set_socket_option (s
, option
, value
))
2644 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2648 if (NILP (no_error
))
2649 error ("Unknown or unsupported option");
2656 DEFUN ("serial-process-configure",
2657 Fserial_process_configure
,
2658 Sserial_process_configure
,
2660 doc
: /* Configure speed, bytesize, etc. of a serial process.
2662 Arguments are specified as keyword/argument pairs. Attributes that
2663 are not given are re-initialized from the process's current
2664 configuration (available via the function `process-contact') or set to
2665 reasonable default values. The following arguments are defined:
2671 -- Any of these arguments can be given to identify the process that is
2672 to be configured. If none of these arguments is given, the current
2673 buffer's process is used.
2675 :speed SPEED -- SPEED is the speed of the serial port in bits per
2676 second, also called baud rate. Any value can be given for SPEED, but
2677 most serial ports work only at a few defined values between 1200 and
2678 115200, with 9600 being the most common value. If SPEED is nil, the
2679 serial port is not configured any further, i.e., all other arguments
2680 are ignored. This may be useful for special serial ports such as
2681 Bluetooth-to-serial converters which can only be configured through AT
2682 commands. A value of nil for SPEED can be used only when passed
2683 through `make-serial-process' or `serial-term'.
2685 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2686 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2688 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2689 `odd' (use odd parity), or the symbol `even' (use even parity). If
2690 PARITY is not given, no parity is used.
2692 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2693 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2694 is not given or nil, 1 stopbit is used.
2696 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2697 flowcontrol to be used, which is either nil (don't use flowcontrol),
2698 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2699 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2700 flowcontrol is used.
2702 `serial-process-configure' is called by `make-serial-process' for the
2703 initial configuration of the serial port.
2707 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2709 \(serial-process-configure
2710 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2712 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2714 usage: (serial-process-configure &rest ARGS) */)
2715 (int nargs
, Lisp_Object
*args
)
2717 struct Lisp_Process
*p
;
2718 Lisp_Object contact
= Qnil
;
2719 Lisp_Object proc
= Qnil
;
2720 struct gcpro gcpro1
;
2722 contact
= Flist (nargs
, args
);
2725 proc
= Fplist_get (contact
, QCprocess
);
2727 proc
= Fplist_get (contact
, QCname
);
2729 proc
= Fplist_get (contact
, QCbuffer
);
2731 proc
= Fplist_get (contact
, QCport
);
2732 proc
= get_process (proc
);
2733 p
= XPROCESS (proc
);
2734 if (!EQ (p
->type
, Qserial
))
2735 error ("Not a serial process");
2737 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2743 serial_configure (p
, contact
);
2749 /* Used by make-serial-process to recover from errors. */
2750 Lisp_Object
make_serial_process_unwind (Lisp_Object proc
)
2752 if (!PROCESSP (proc
))
2754 remove_process (proc
);
2758 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2760 doc
: /* Create and return a serial port process.
2762 In Emacs, serial port connections are represented by process objects,
2763 so input and output work as for subprocesses, and `delete-process'
2764 closes a serial port connection. However, a serial process has no
2765 process id, it cannot be signaled, and the status codes are different
2766 from normal processes.
2768 `make-serial-process' creates a process and a buffer, on which you
2769 probably want to use `process-send-string'. Try \\[serial-term] for
2770 an interactive terminal. See below for examples.
2772 Arguments are specified as keyword/argument pairs. The following
2773 arguments are defined:
2775 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2776 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2777 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2778 the backslashes in strings).
2780 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2781 which is called by `make-serial-process'.
2783 :name NAME -- NAME is the name of the process. If NAME is not given,
2784 the value of PORT is used.
2786 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2787 with the process. Process output goes at the end of that buffer,
2788 unless you specify an output stream or filter function to handle the
2789 output. If BUFFER is not given, the value of NAME is used.
2791 :coding CODING -- If CODING is a symbol, it specifies the coding
2792 system used for both reading and writing for this process. If CODING
2793 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2794 ENCODING is used for writing.
2796 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2797 the process is running. If BOOL is not given, query before exiting.
2799 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2800 In the stopped state, a serial process does not accept incoming data,
2801 but you can send outgoing data. The stopped state is cleared by
2802 `continue-process' and set by `stop-process'.
2804 :filter FILTER -- Install FILTER as the process filter.
2806 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2808 :plist PLIST -- Install PLIST as the initial plist of the process.
2815 -- These arguments are handled by `serial-process-configure', which is
2816 called by `make-serial-process'.
2818 The original argument list, possibly modified by later configuration,
2819 is available via the function `process-contact'.
2823 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2825 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2827 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2829 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2831 usage: (make-serial-process &rest ARGS) */)
2832 (int nargs
, Lisp_Object
*args
)
2835 Lisp_Object proc
, contact
, port
;
2836 struct Lisp_Process
*p
;
2837 struct gcpro gcpro1
;
2838 Lisp_Object name
, buffer
;
2839 Lisp_Object tem
, val
;
2840 int specpdl_count
= -1;
2845 contact
= Flist (nargs
, args
);
2848 port
= Fplist_get (contact
, QCport
);
2850 error ("No port specified");
2851 CHECK_STRING (port
);
2853 if (NILP (Fplist_member (contact
, QCspeed
)))
2854 error (":speed not specified");
2855 if (!NILP (Fplist_get (contact
, QCspeed
)))
2856 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2858 name
= Fplist_get (contact
, QCname
);
2861 CHECK_STRING (name
);
2862 proc
= make_process (name
);
2863 specpdl_count
= SPECPDL_INDEX ();
2864 record_unwind_protect (make_serial_process_unwind
, proc
);
2865 p
= XPROCESS (proc
);
2867 fd
= serial_open ((char*) SDATA (port
));
2870 if (fd
> max_process_desc
)
2871 max_process_desc
= fd
;
2872 chan_process
[fd
] = proc
;
2874 buffer
= Fplist_get (contact
, QCbuffer
);
2877 buffer
= Fget_buffer_create (buffer
);
2880 p
->childp
= contact
;
2881 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2883 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2884 p
->filter
= Fplist_get (contact
, QCfilter
);
2886 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2887 p
->kill_without_query
= 1;
2888 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2892 if (!EQ (p
->command
, Qt
))
2894 FD_SET (fd
, &input_wait_mask
);
2895 FD_SET (fd
, &non_keyboard_wait_mask
);
2898 if (BUFFERP (buffer
))
2900 set_marker_both (p
->mark
, buffer
,
2901 BUF_ZV (XBUFFER (buffer
)),
2902 BUF_ZV_BYTE (XBUFFER (buffer
)));
2905 tem
= Fplist_member (contact
, QCcoding
);
2906 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2912 val
= XCAR (XCDR (tem
));
2916 else if (!NILP (Vcoding_system_for_read
))
2917 val
= Vcoding_system_for_read
;
2918 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
2919 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
2921 p
->decode_coding_system
= val
;
2926 val
= XCAR (XCDR (tem
));
2930 else if (!NILP (Vcoding_system_for_write
))
2931 val
= Vcoding_system_for_write
;
2932 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
2933 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
2935 p
->encode_coding_system
= val
;
2937 setup_process_coding_systems (proc
);
2938 p
->decoding_buf
= make_uninit_string (0);
2939 p
->decoding_carryover
= 0;
2940 p
->encoding_buf
= make_uninit_string (0);
2941 p
->inherit_coding_system_flag
2942 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
2944 Fserial_process_configure (nargs
, args
);
2946 specpdl_ptr
= specpdl
+ specpdl_count
;
2951 #endif /* HAVE_SERIAL */
2953 /* Create a network stream/datagram client/server process. Treated
2954 exactly like a normal process when reading and writing. Primary
2955 differences are in status display and process deletion. A network
2956 connection has no PID; you cannot signal it. All you can do is
2957 stop/continue it and deactivate/close it via delete-process */
2959 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2961 doc
: /* Create and return a network server or client process.
2963 In Emacs, network connections are represented by process objects, so
2964 input and output work as for subprocesses and `delete-process' closes
2965 a network connection. However, a network process has no process id,
2966 it cannot be signaled, and the status codes are different from normal
2969 Arguments are specified as keyword/argument pairs. The following
2970 arguments are defined:
2972 :name NAME -- NAME is name for process. It is modified if necessary
2975 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2976 with the process. Process output goes at end of that buffer, unless
2977 you specify an output stream or filter function to handle the output.
2978 BUFFER may be also nil, meaning that this process is not associated
2981 :host HOST -- HOST is name of the host to connect to, or its IP
2982 address. The symbol `local' specifies the local host. If specified
2983 for a server process, it must be a valid name or address for the local
2984 host, and only clients connecting to that address will be accepted.
2986 :service SERVICE -- SERVICE is name of the service desired, or an
2987 integer specifying a port number to connect to. If SERVICE is t,
2988 a random port number is selected for the server. (If Emacs was
2989 compiled with getaddrinfo, a port number can also be specified as a
2990 string, e.g. "80", as well as an integer. This is not portable.)
2992 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2993 stream type connection, `datagram' creates a datagram type connection,
2994 `seqpacket' creates a reliable datagram connection.
2996 :family FAMILY -- FAMILY is the address (and protocol) family for the
2997 service specified by HOST and SERVICE. The default (nil) is to use
2998 whatever address family (IPv4 or IPv6) that is defined for the host
2999 and port number specified by HOST and SERVICE. Other address families
3001 local -- for a local (i.e. UNIX) address specified by SERVICE.
3002 ipv4 -- use IPv4 address family only.
3003 ipv6 -- use IPv6 address family only.
3005 :local ADDRESS -- ADDRESS is the local address used for the connection.
3006 This parameter is ignored when opening a client process. When specified
3007 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3009 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3010 connection. This parameter is ignored when opening a stream server
3011 process. For a datagram server process, it specifies the initial
3012 setting of the remote datagram address. When specified for a client
3013 process, the FAMILY, HOST, and SERVICE args are ignored.
3015 The format of ADDRESS depends on the address family:
3016 - An IPv4 address is represented as an vector of integers [A B C D P]
3017 corresponding to numeric IP address A.B.C.D and port number P.
3018 - A local address is represented as a string with the address in the
3019 local address space.
3020 - An "unsupported family" address is represented by a cons (F . AV)
3021 where F is the family number and AV is a vector containing the socket
3022 address data with one element per address data byte. Do not rely on
3023 this format in portable code, as it may depend on implementation
3024 defined constants, data sizes, and data structure alignment.
3026 :coding CODING -- If CODING is a symbol, it specifies the coding
3027 system used for both reading and writing for this process. If CODING
3028 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3029 ENCODING is used for writing.
3031 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
3032 return without waiting for the connection to complete; instead, the
3033 sentinel function will be called with second arg matching "open" (if
3034 successful) or "failed" when the connect completes. Default is to use
3035 a blocking connect (i.e. wait) for stream type connections.
3037 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3038 running when Emacs is exited.
3040 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3041 In the stopped state, a server process does not accept new
3042 connections, and a client process does not handle incoming traffic.
3043 The stopped state is cleared by `continue-process' and set by
3046 :filter FILTER -- Install FILTER as the process filter.
3048 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3049 process filter are multibyte, otherwise they are unibyte.
3050 If this keyword is not specified, the strings are multibyte if
3051 `default-enable-multibyte-characters' is non-nil.
3053 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3055 :log LOG -- Install LOG as the server process log function. This
3056 function is called when the server accepts a network connection from a
3057 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3058 is the server process, CLIENT is the new process for the connection,
3059 and MESSAGE is a string.
3061 :plist PLIST -- Install PLIST as the new process' initial plist.
3063 :server QLEN -- if QLEN is non-nil, create a server process for the
3064 specified FAMILY, SERVICE, and connection type (stream or datagram).
3065 If QLEN is an integer, it is used as the max. length of the server's
3066 pending connection queue (also known as the backlog); the default
3067 queue length is 5. Default is to create a client process.
3069 The following network options can be specified for this connection:
3071 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3072 :dontroute BOOL -- Only send to directly connected hosts.
3073 :keepalive BOOL -- Send keep-alive messages on network stream.
3074 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3075 :oobinline BOOL -- Place out-of-band data in receive data stream.
3076 :priority INT -- Set protocol defined priority for sent packets.
3077 :reuseaddr BOOL -- Allow reusing a recently used local address
3078 (this is allowed by default for a server process).
3079 :bindtodevice NAME -- bind to interface NAME. Using this may require
3080 special privileges on some systems.
3082 Consult the relevant system programmer's manual pages for more
3083 information on using these options.
3086 A server process will listen for and accept connections from clients.
3087 When a client connection is accepted, a new network process is created
3088 for the connection with the following parameters:
3090 - The client's process name is constructed by concatenating the server
3091 process' NAME and a client identification string.
3092 - If the FILTER argument is non-nil, the client process will not get a
3093 separate process buffer; otherwise, the client's process buffer is a newly
3094 created buffer named after the server process' BUFFER name or process
3095 NAME concatenated with the client identification string.
3096 - The connection type and the process filter and sentinel parameters are
3097 inherited from the server process' TYPE, FILTER and SENTINEL.
3098 - The client process' contact info is set according to the client's
3099 addressing information (typically an IP address and a port number).
3100 - The client process' plist is initialized from the server's plist.
3102 Notice that the FILTER and SENTINEL args are never used directly by
3103 the server process. Also, the BUFFER argument is not used directly by
3104 the server process, but via the optional :log function, accepted (and
3105 failed) connections may be logged in the server process' buffer.
3107 The original argument list, modified with the actual connection
3108 information, is available via the `process-contact' function.
3110 usage: (make-network-process &rest ARGS) */)
3111 (int nargs
, Lisp_Object
*args
)
3114 Lisp_Object contact
;
3115 struct Lisp_Process
*p
;
3116 #ifdef HAVE_GETADDRINFO
3117 struct addrinfo ai
, *res
, *lres
;
3118 struct addrinfo hints
;
3119 char *portstring
, portbuf
[128];
3120 #else /* HAVE_GETADDRINFO */
3121 struct _emacs_addrinfo
3127 struct sockaddr
*ai_addr
;
3128 struct _emacs_addrinfo
*ai_next
;
3130 #endif /* HAVE_GETADDRINFO */
3131 struct sockaddr_in address_in
;
3132 #ifdef HAVE_LOCAL_SOCKETS
3133 struct sockaddr_un address_un
;
3138 int s
= -1, outch
, inch
;
3139 struct gcpro gcpro1
;
3140 int count
= SPECPDL_INDEX ();
3142 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
3144 Lisp_Object name
, buffer
, host
, service
, address
;
3145 Lisp_Object filter
, sentinel
;
3146 int is_non_blocking_client
= 0;
3147 int is_server
= 0, backlog
= 5;
3154 /* Save arguments for process-contact and clone-process. */
3155 contact
= Flist (nargs
, args
);
3159 /* Ensure socket support is loaded if available. */
3160 init_winsock (TRUE
);
3163 /* :type TYPE (nil: stream, datagram */
3164 tem
= Fplist_get (contact
, QCtype
);
3166 socktype
= SOCK_STREAM
;
3167 #ifdef DATAGRAM_SOCKETS
3168 else if (EQ (tem
, Qdatagram
))
3169 socktype
= SOCK_DGRAM
;
3171 #ifdef HAVE_SEQPACKET
3172 else if (EQ (tem
, Qseqpacket
))
3173 socktype
= SOCK_SEQPACKET
;
3176 error ("Unsupported connection type");
3179 tem
= Fplist_get (contact
, QCserver
);
3182 /* Don't support network sockets when non-blocking mode is
3183 not available, since a blocked Emacs is not useful. */
3184 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
3185 error ("Network servers not supported");
3189 backlog
= XINT (tem
);
3193 /* Make QCaddress an alias for :local (server) or :remote (client). */
3194 QCaddress
= is_server
? QClocal
: QCremote
;
3197 if (!is_server
&& socktype
!= SOCK_DGRAM
3198 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
3200 #ifndef NON_BLOCKING_CONNECT
3201 error ("Non-blocking connect not supported");
3203 is_non_blocking_client
= 1;
3207 name
= Fplist_get (contact
, QCname
);
3208 buffer
= Fplist_get (contact
, QCbuffer
);
3209 filter
= Fplist_get (contact
, QCfilter
);
3210 sentinel
= Fplist_get (contact
, QCsentinel
);
3212 CHECK_STRING (name
);
3214 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
3215 ai
.ai_socktype
= socktype
;
3220 /* :local ADDRESS or :remote ADDRESS */
3221 address
= Fplist_get (contact
, QCaddress
);
3222 if (!NILP (address
))
3224 host
= service
= Qnil
;
3226 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
3227 error ("Malformed :address");
3228 ai
.ai_family
= family
;
3229 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
3230 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3234 /* :family FAMILY -- nil (for Inet), local, or integer. */
3235 tem
= Fplist_get (contact
, QCfamily
);
3238 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3244 #ifdef HAVE_LOCAL_SOCKETS
3245 else if (EQ (tem
, Qlocal
))
3249 else if (EQ (tem
, Qipv6
))
3252 else if (EQ (tem
, Qipv4
))
3254 else if (INTEGERP (tem
))
3255 family
= XINT (tem
);
3257 error ("Unknown address family");
3259 ai
.ai_family
= family
;
3261 /* :service SERVICE -- string, integer (port number), or t (random port). */
3262 service
= Fplist_get (contact
, QCservice
);
3264 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3265 host
= Fplist_get (contact
, QChost
);
3268 if (EQ (host
, Qlocal
))
3269 host
= build_string ("localhost");
3270 CHECK_STRING (host
);
3273 #ifdef HAVE_LOCAL_SOCKETS
3274 if (family
== AF_LOCAL
)
3278 message (":family local ignores the :host \"%s\" property",
3280 contact
= Fplist_put (contact
, QChost
, Qnil
);
3283 CHECK_STRING (service
);
3284 memset (&address_un
, 0, sizeof address_un
);
3285 address_un
.sun_family
= AF_LOCAL
;
3286 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3287 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3288 ai
.ai_addrlen
= sizeof address_un
;
3293 /* Slow down polling to every ten seconds.
3294 Some kernels have a bug which causes retrying connect to fail
3295 after a connect. Polling can interfere with gethostbyname too. */
3296 #ifdef POLL_FOR_INPUT
3297 if (socktype
!= SOCK_DGRAM
)
3299 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3300 bind_polling_period (10);
3304 #ifdef HAVE_GETADDRINFO
3305 /* If we have a host, use getaddrinfo to resolve both host and service.
3306 Otherwise, use getservbyname to lookup the service. */
3310 /* SERVICE can either be a string or int.
3311 Convert to a C string for later use by getaddrinfo. */
3312 if (EQ (service
, Qt
))
3314 else if (INTEGERP (service
))
3316 sprintf (portbuf
, "%ld", (long) XINT (service
));
3317 portstring
= portbuf
;
3321 CHECK_STRING (service
);
3322 portstring
= SDATA (service
);
3327 memset (&hints
, 0, sizeof (hints
));
3329 hints
.ai_family
= family
;
3330 hints
.ai_socktype
= socktype
;
3331 hints
.ai_protocol
= 0;
3333 #ifdef HAVE_RES_INIT
3337 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3339 #ifdef HAVE_GAI_STRERROR
3340 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror (ret
));
3342 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3348 #endif /* HAVE_GETADDRINFO */
3350 /* We end up here if getaddrinfo is not defined, or in case no hostname
3351 has been specified (e.g. for a local server process). */
3353 if (EQ (service
, Qt
))
3355 else if (INTEGERP (service
))
3356 port
= htons ((unsigned short) XINT (service
));
3359 struct servent
*svc_info
;
3360 CHECK_STRING (service
);
3361 svc_info
= getservbyname (SDATA (service
),
3362 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3364 error ("Unknown service: %s", SDATA (service
));
3365 port
= svc_info
->s_port
;
3368 memset (&address_in
, 0, sizeof address_in
);
3369 address_in
.sin_family
= family
;
3370 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3371 address_in
.sin_port
= port
;
3373 #ifndef HAVE_GETADDRINFO
3376 struct hostent
*host_info_ptr
;
3378 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3379 as it may `hang' Emacs for a very long time. */
3383 #ifdef HAVE_RES_INIT
3387 host_info_ptr
= gethostbyname (SDATA (host
));
3392 memcpy (&address_in
.sin_addr
, host_info_ptr
->h_addr
,
3393 host_info_ptr
->h_length
);
3394 family
= host_info_ptr
->h_addrtype
;
3395 address_in
.sin_family
= family
;
3398 /* Attempt to interpret host as numeric inet address */
3400 unsigned long numeric_addr
;
3401 numeric_addr
= inet_addr ((char *) SDATA (host
));
3402 if (numeric_addr
== -1)
3403 error ("Unknown host \"%s\"", SDATA (host
));
3405 memcpy (&address_in
.sin_addr
, &numeric_addr
,
3406 sizeof (address_in
.sin_addr
));
3410 #endif /* not HAVE_GETADDRINFO */
3412 ai
.ai_family
= family
;
3413 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3414 ai
.ai_addrlen
= sizeof address_in
;
3418 /* Do this in case we never enter the for-loop below. */
3419 count1
= SPECPDL_INDEX ();
3422 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3428 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3435 #ifdef DATAGRAM_SOCKETS
3436 if (!is_server
&& socktype
== SOCK_DGRAM
)
3438 #endif /* DATAGRAM_SOCKETS */
3440 #ifdef NON_BLOCKING_CONNECT
3441 if (is_non_blocking_client
)
3444 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3446 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3458 /* Make us close S if quit. */
3459 record_unwind_protect (close_file_unwind
, make_number (s
));
3461 /* Parse network options in the arg list.
3462 We simply ignore anything which isn't a known option (including other keywords).
3463 An error is signaled if setting a known option fails. */
3464 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3465 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3469 /* Configure as a server socket. */
3471 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3472 explicit :reuseaddr key to override this. */
3473 #ifdef HAVE_LOCAL_SOCKETS
3474 if (family
!= AF_LOCAL
)
3476 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3479 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3480 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3483 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3484 report_file_error ("Cannot bind server socket", Qnil
);
3486 #ifdef HAVE_GETSOCKNAME
3487 if (EQ (service
, Qt
))
3489 struct sockaddr_in sa1
;
3490 int len1
= sizeof (sa1
);
3491 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3493 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3494 service
= make_number (ntohs (sa1
.sin_port
));
3495 contact
= Fplist_put (contact
, QCservice
, service
);
3500 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3501 report_file_error ("Cannot listen on server socket", Qnil
);
3509 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3512 if (ret
== 0 || xerrno
== EISCONN
)
3514 /* The unwind-protect will be discarded afterwards.
3515 Likewise for immediate_quit. */
3519 #ifdef NON_BLOCKING_CONNECT
3521 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3525 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3532 if (xerrno
== EINTR
)
3534 /* Unlike most other syscalls connect() cannot be called
3535 again. (That would return EALREADY.) The proper way to
3536 wait for completion is select(). */
3543 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3550 report_file_error ("select failed", Qnil
);
3554 len
= sizeof xerrno
;
3555 eassert (FD_ISSET (s
, &fdset
));
3556 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3557 report_file_error ("getsockopt failed", Qnil
);
3559 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3563 #endif /* !WINDOWSNT */
3567 /* Discard the unwind protect closing S. */
3568 specpdl_ptr
= specpdl
+ count1
;
3573 if (xerrno
== EINTR
)
3580 #ifdef DATAGRAM_SOCKETS
3581 if (socktype
== SOCK_DGRAM
)
3583 if (datagram_address
[s
].sa
)
3585 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3586 datagram_address
[s
].len
= lres
->ai_addrlen
;
3590 memset (datagram_address
[s
].sa
, 0, lres
->ai_addrlen
);
3591 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3594 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3595 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3596 conv_lisp_to_sockaddr (rfamily
, remote
,
3597 datagram_address
[s
].sa
, rlen
);
3601 memcpy (datagram_address
[s
].sa
, lres
->ai_addr
, lres
->ai_addrlen
);
3604 contact
= Fplist_put (contact
, QCaddress
,
3605 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3606 #ifdef HAVE_GETSOCKNAME
3609 struct sockaddr_in sa1
;
3610 int len1
= sizeof (sa1
);
3611 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3612 contact
= Fplist_put (contact
, QClocal
,
3613 conv_sockaddr_to_lisp ((struct sockaddr
*)&sa1
, len1
));
3620 #ifdef HAVE_GETADDRINFO
3629 /* Discard the unwind protect for closing S, if any. */
3630 specpdl_ptr
= specpdl
+ count1
;
3632 /* Unwind bind_polling_period and request_sigio. */
3633 unbind_to (count
, Qnil
);
3637 /* If non-blocking got this far - and failed - assume non-blocking is
3638 not supported after all. This is probably a wrong assumption, but
3639 the normal blocking calls to open-network-stream handles this error
3641 if (is_non_blocking_client
)
3646 report_file_error ("make server process failed", contact
);
3648 report_file_error ("make client process failed", contact
);
3655 buffer
= Fget_buffer_create (buffer
);
3656 proc
= make_process (name
);
3658 chan_process
[inch
] = proc
;
3661 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3664 fcntl (inch
, F_SETFL
, O_NDELAY
);
3668 p
= XPROCESS (proc
);
3670 p
->childp
= contact
;
3671 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3675 p
->sentinel
= sentinel
;
3677 p
->log
= Fplist_get (contact
, QClog
);
3678 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3679 p
->kill_without_query
= 1;
3680 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3685 if (is_server
&& socktype
!= SOCK_DGRAM
)
3686 p
->status
= Qlisten
;
3688 /* Make the process marker point into the process buffer (if any). */
3689 if (BUFFERP (buffer
))
3690 set_marker_both (p
->mark
, buffer
,
3691 BUF_ZV (XBUFFER (buffer
)),
3692 BUF_ZV_BYTE (XBUFFER (buffer
)));
3694 #ifdef NON_BLOCKING_CONNECT
3695 if (is_non_blocking_client
)
3697 /* We may get here if connect did succeed immediately. However,
3698 in that case, we still need to signal this like a non-blocking
3700 p
->status
= Qconnect
;
3701 if (!FD_ISSET (inch
, &connect_wait_mask
))
3703 FD_SET (inch
, &connect_wait_mask
);
3704 num_pending_connects
++;
3709 /* A server may have a client filter setting of Qt, but it must
3710 still listen for incoming connects unless it is stopped. */
3711 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3712 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3714 FD_SET (inch
, &input_wait_mask
);
3715 FD_SET (inch
, &non_keyboard_wait_mask
);
3718 if (inch
> max_process_desc
)
3719 max_process_desc
= inch
;
3721 tem
= Fplist_member (contact
, QCcoding
);
3722 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3723 tem
= Qnil
; /* No error message (too late!). */
3726 /* Setup coding systems for communicating with the network stream. */
3727 struct gcpro gcpro1
;
3728 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3729 Lisp_Object coding_systems
= Qt
;
3730 Lisp_Object args
[5], val
;
3734 val
= XCAR (XCDR (tem
));
3738 else if (!NILP (Vcoding_system_for_read
))
3739 val
= Vcoding_system_for_read
;
3740 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3741 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3742 /* We dare not decode end-of-line format by setting VAL to
3743 Qraw_text, because the existing Emacs Lisp libraries
3744 assume that they receive bare code including a sequene of
3749 if (NILP (host
) || NILP (service
))
3750 coding_systems
= Qnil
;
3753 args
[0] = Qopen_network_stream
, args
[1] = name
,
3754 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3756 coding_systems
= Ffind_operation_coding_system (5, args
);
3759 if (CONSP (coding_systems
))
3760 val
= XCAR (coding_systems
);
3761 else if (CONSP (Vdefault_process_coding_system
))
3762 val
= XCAR (Vdefault_process_coding_system
);
3766 p
->decode_coding_system
= val
;
3770 val
= XCAR (XCDR (tem
));
3774 else if (!NILP (Vcoding_system_for_write
))
3775 val
= Vcoding_system_for_write
;
3776 else if (NILP (current_buffer
->enable_multibyte_characters
))
3780 if (EQ (coding_systems
, Qt
))
3782 if (NILP (host
) || NILP (service
))
3783 coding_systems
= Qnil
;
3786 args
[0] = Qopen_network_stream
, args
[1] = name
,
3787 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3789 coding_systems
= Ffind_operation_coding_system (5, args
);
3793 if (CONSP (coding_systems
))
3794 val
= XCDR (coding_systems
);
3795 else if (CONSP (Vdefault_process_coding_system
))
3796 val
= XCDR (Vdefault_process_coding_system
);
3800 p
->encode_coding_system
= val
;
3802 setup_process_coding_systems (proc
);
3804 p
->decoding_buf
= make_uninit_string (0);
3805 p
->decoding_carryover
= 0;
3806 p
->encoding_buf
= make_uninit_string (0);
3808 p
->inherit_coding_system_flag
3809 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3814 #endif /* HAVE_SOCKETS */
3817 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3820 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3821 doc
: /* Return an alist of all network interfaces and their network address.
3822 Each element is a cons, the car of which is a string containing the
3823 interface name, and the cdr is the network address in internal
3824 format; see the description of ADDRESS in `make-network-process'. */)
3827 struct ifconf ifconf
;
3828 struct ifreq
*ifreqs
= NULL
;
3833 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3839 buf_size
= ifaces
* sizeof (ifreqs
[0]);
3840 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3847 ifconf
.ifc_len
= buf_size
;
3848 ifconf
.ifc_req
= ifreqs
;
3849 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3855 if (ifconf
.ifc_len
== buf_size
)
3859 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3862 while (--ifaces
>= 0)
3864 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3865 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3866 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3868 memcpy (namebuf
, ifq
->ifr_name
, sizeof (ifq
->ifr_name
));
3869 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3870 res
= Fcons (Fcons (build_string (namebuf
),
3871 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3872 sizeof (struct sockaddr
))),
3878 #endif /* SIOCGIFCONF */
3880 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3884 const char *flag_sym
;
3887 static const struct ifflag_def ifflag_table
[] = {
3891 #ifdef IFF_BROADCAST
3892 { IFF_BROADCAST
, "broadcast" },
3895 { IFF_DEBUG
, "debug" },
3898 { IFF_LOOPBACK
, "loopback" },
3900 #ifdef IFF_POINTOPOINT
3901 { IFF_POINTOPOINT
, "pointopoint" },
3904 { IFF_RUNNING
, "running" },
3907 { IFF_NOARP
, "noarp" },
3910 { IFF_PROMISC
, "promisc" },
3912 #ifdef IFF_NOTRAILERS
3913 { IFF_NOTRAILERS
, "notrailers" },
3916 { IFF_ALLMULTI
, "allmulti" },
3919 { IFF_MASTER
, "master" },
3922 { IFF_SLAVE
, "slave" },
3924 #ifdef IFF_MULTICAST
3925 { IFF_MULTICAST
, "multicast" },
3928 { IFF_PORTSEL
, "portsel" },
3930 #ifdef IFF_AUTOMEDIA
3931 { IFF_AUTOMEDIA
, "automedia" },
3934 { IFF_DYNAMIC
, "dynamic" },
3937 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3940 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3943 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3946 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3949 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3954 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3955 doc
: /* Return information about network interface named IFNAME.
3956 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3957 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3958 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3959 FLAGS is the current flags of the interface. */)
3960 (Lisp_Object ifname
)
3963 Lisp_Object res
= Qnil
;
3968 CHECK_STRING (ifname
);
3970 memset (rq
.ifr_name
, 0, sizeof rq
.ifr_name
);
3971 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3973 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3978 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3979 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3981 int flags
= rq
.ifr_flags
;
3982 const struct ifflag_def
*fp
;
3986 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3988 if (flags
& fp
->flag_bit
)
3990 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3991 flags
-= fp
->flag_bit
;
3994 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3996 if (flags
& (1 << fnum
))
3998 elt
= Fcons (make_number (fnum
), elt
);
4003 res
= Fcons (elt
, res
);
4006 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
4007 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4009 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4010 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4014 for (n
= 0; n
< 6; n
++)
4015 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
4016 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4019 res
= Fcons (elt
, res
);
4022 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
4023 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4026 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4027 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4029 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4033 res
= Fcons (elt
, res
);
4036 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4037 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4040 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4043 res
= Fcons (elt
, res
);
4046 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
4047 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4050 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4053 res
= Fcons (elt
, res
);
4057 return any
? res
: Qnil
;
4060 #endif /* HAVE_SOCKETS */
4062 /* Turn off input and output for process PROC. */
4065 deactivate_process (Lisp_Object proc
)
4067 register int inchannel
, outchannel
;
4068 register struct Lisp_Process
*p
= XPROCESS (proc
);
4070 inchannel
= p
->infd
;
4071 outchannel
= p
->outfd
;
4073 #ifdef ADAPTIVE_READ_BUFFERING
4074 if (p
->read_output_delay
> 0)
4076 if (--process_output_delay_count
< 0)
4077 process_output_delay_count
= 0;
4078 p
->read_output_delay
= 0;
4079 p
->read_output_skip
= 0;
4085 /* Beware SIGCHLD hereabouts. */
4086 flush_pending_output (inchannel
);
4087 emacs_close (inchannel
);
4088 if (outchannel
>= 0 && outchannel
!= inchannel
)
4089 emacs_close (outchannel
);
4093 #ifdef DATAGRAM_SOCKETS
4094 if (DATAGRAM_CHAN_P (inchannel
))
4096 xfree (datagram_address
[inchannel
].sa
);
4097 datagram_address
[inchannel
].sa
= 0;
4098 datagram_address
[inchannel
].len
= 0;
4101 chan_process
[inchannel
] = Qnil
;
4102 FD_CLR (inchannel
, &input_wait_mask
);
4103 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4104 #ifdef NON_BLOCKING_CONNECT
4105 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4107 FD_CLR (inchannel
, &connect_wait_mask
);
4108 if (--num_pending_connects
< 0)
4112 if (inchannel
== max_process_desc
)
4115 /* We just closed the highest-numbered process input descriptor,
4116 so recompute the highest-numbered one now. */
4117 max_process_desc
= 0;
4118 for (i
= 0; i
< MAXDESC
; i
++)
4119 if (!NILP (chan_process
[i
]))
4120 max_process_desc
= i
;
4125 /* Close all descriptors currently in use for communication
4126 with subprocess. This is used in a newly-forked subprocess
4127 to get rid of irrelevant descriptors. */
4130 close_process_descs (void)
4134 for (i
= 0; i
< MAXDESC
; i
++)
4136 Lisp_Object process
;
4137 process
= chan_process
[i
];
4138 if (!NILP (process
))
4140 int in
= XPROCESS (process
)->infd
;
4141 int out
= XPROCESS (process
)->outfd
;
4144 if (out
>= 0 && in
!= out
)
4151 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4153 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4154 It is read into the process' buffers or given to their filter functions.
4155 Non-nil arg PROCESS means do not return until some output has been received
4158 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
4159 and milliseconds to wait; return after that much time whether or not
4160 there is any subprocess output. If SECONDS is a floating point number,
4161 it specifies a fractional number of seconds to wait.
4162 The MILLISEC argument is obsolete and should be avoided.
4164 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
4165 from PROCESS, suspending reading output from other processes.
4166 If JUST-THIS-ONE is an integer, don't run any timers either.
4167 Return non-nil if we received any output before the timeout expired. */)
4168 (register Lisp_Object process
, Lisp_Object seconds
, Lisp_Object millisec
, Lisp_Object just_this_one
)
4170 int secs
, usecs
= 0;
4172 if (! NILP (process
))
4173 CHECK_PROCESS (process
);
4175 just_this_one
= Qnil
;
4177 if (!NILP (millisec
))
4178 { /* Obsolete calling convention using integers rather than floats. */
4179 CHECK_NUMBER (millisec
);
4181 seconds
= make_float (XINT (millisec
) / 1000.0);
4184 CHECK_NUMBER (seconds
);
4185 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4189 if (!NILP (seconds
))
4191 if (INTEGERP (seconds
))
4192 secs
= XINT (seconds
);
4193 else if (FLOATP (seconds
))
4195 double timeout
= XFLOAT_DATA (seconds
);
4196 secs
= (int) timeout
;
4197 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
4200 wrong_type_argument (Qnumberp
, seconds
);
4202 if (secs
< 0 || (secs
== 0 && usecs
== 0))
4203 secs
= -1, usecs
= 0;
4206 secs
= NILP (process
) ? -1 : 0;
4209 (wait_reading_process_output (secs
, usecs
, 0, 0,
4211 !NILP (process
) ? XPROCESS (process
) : NULL
,
4212 NILP (just_this_one
) ? 0 :
4213 !INTEGERP (just_this_one
) ? 1 : -1)
4217 /* Accept a connection for server process SERVER on CHANNEL. */
4219 static int connect_counter
= 0;
4222 server_accept_connection (Lisp_Object server
, int channel
)
4224 Lisp_Object proc
, caller
, name
, buffer
;
4225 Lisp_Object contact
, host
, service
;
4226 struct Lisp_Process
*ps
= XPROCESS (server
);
4227 struct Lisp_Process
*p
;
4231 struct sockaddr_in in
;
4233 struct sockaddr_in6 in6
;
4235 #ifdef HAVE_LOCAL_SOCKETS
4236 struct sockaddr_un un
;
4239 int len
= sizeof saddr
;
4241 s
= accept (channel
, &saddr
.sa
, &len
);
4250 if (code
== EWOULDBLOCK
)
4254 if (!NILP (ps
->log
))
4255 call3 (ps
->log
, server
, Qnil
,
4256 concat3 (build_string ("accept failed with code"),
4257 Fnumber_to_string (make_number (code
)),
4258 build_string ("\n")));
4264 /* Setup a new process to handle the connection. */
4266 /* Generate a unique identification of the caller, and build contact
4267 information for this process. */
4270 switch (saddr
.sa
.sa_family
)
4274 Lisp_Object args
[5];
4275 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4276 args
[0] = build_string ("%d.%d.%d.%d");
4277 args
[1] = make_number (*ip
++);
4278 args
[2] = make_number (*ip
++);
4279 args
[3] = make_number (*ip
++);
4280 args
[4] = make_number (*ip
++);
4281 host
= Fformat (5, args
);
4282 service
= make_number (ntohs (saddr
.in
.sin_port
));
4284 args
[0] = build_string (" <%s:%d>");
4287 caller
= Fformat (3, args
);
4294 Lisp_Object args
[9];
4295 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4297 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4298 for (i
= 0; i
< 8; i
++)
4299 args
[i
+1] = make_number (ntohs (ip6
[i
]));
4300 host
= Fformat (9, args
);
4301 service
= make_number (ntohs (saddr
.in
.sin_port
));
4303 args
[0] = build_string (" <[%s]:%d>");
4306 caller
= Fformat (3, args
);
4311 #ifdef HAVE_LOCAL_SOCKETS
4315 caller
= Fnumber_to_string (make_number (connect_counter
));
4316 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4320 /* Create a new buffer name for this process if it doesn't have a
4321 filter. The new buffer name is based on the buffer name or
4322 process name of the server process concatenated with the caller
4325 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4329 buffer
= ps
->buffer
;
4331 buffer
= Fbuffer_name (buffer
);
4336 buffer
= concat2 (buffer
, caller
);
4337 buffer
= Fget_buffer_create (buffer
);
4341 /* Generate a unique name for the new server process. Combine the
4342 server process name with the caller identification. */
4344 name
= concat2 (ps
->name
, caller
);
4345 proc
= make_process (name
);
4347 chan_process
[s
] = proc
;
4350 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4353 fcntl (s
, F_SETFL
, O_NDELAY
);
4357 p
= XPROCESS (proc
);
4359 /* Build new contact information for this setup. */
4360 contact
= Fcopy_sequence (ps
->childp
);
4361 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4362 contact
= Fplist_put (contact
, QChost
, host
);
4363 if (!NILP (service
))
4364 contact
= Fplist_put (contact
, QCservice
, service
);
4365 contact
= Fplist_put (contact
, QCremote
,
4366 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4367 #ifdef HAVE_GETSOCKNAME
4369 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4370 contact
= Fplist_put (contact
, QClocal
,
4371 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4374 p
->childp
= contact
;
4375 p
->plist
= Fcopy_sequence (ps
->plist
);
4379 p
->sentinel
= ps
->sentinel
;
4380 p
->filter
= ps
->filter
;
4387 /* Client processes for accepted connections are not stopped initially. */
4388 if (!EQ (p
->filter
, Qt
))
4390 FD_SET (s
, &input_wait_mask
);
4391 FD_SET (s
, &non_keyboard_wait_mask
);
4394 if (s
> max_process_desc
)
4395 max_process_desc
= s
;
4397 /* Setup coding system for new process based on server process.
4398 This seems to be the proper thing to do, as the coding system
4399 of the new process should reflect the settings at the time the
4400 server socket was opened; not the current settings. */
4402 p
->decode_coding_system
= ps
->decode_coding_system
;
4403 p
->encode_coding_system
= ps
->encode_coding_system
;
4404 setup_process_coding_systems (proc
);
4406 p
->decoding_buf
= make_uninit_string (0);
4407 p
->decoding_carryover
= 0;
4408 p
->encoding_buf
= make_uninit_string (0);
4410 p
->inherit_coding_system_flag
4411 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4413 if (!NILP (ps
->log
))
4414 call3 (ps
->log
, server
, proc
,
4415 concat3 (build_string ("accept from "),
4416 (STRINGP (host
) ? host
: build_string ("-")),
4417 build_string ("\n")));
4419 if (!NILP (p
->sentinel
))
4420 exec_sentinel (proc
,
4421 concat3 (build_string ("open from "),
4422 (STRINGP (host
) ? host
: build_string ("-")),
4423 build_string ("\n")));
4426 /* This variable is different from waiting_for_input in keyboard.c.
4427 It is used to communicate to a lisp process-filter/sentinel (via the
4428 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4429 for user-input when that process-filter was called.
4430 waiting_for_input cannot be used as that is by definition 0 when
4431 lisp code is being evalled.
4432 This is also used in record_asynch_buffer_change.
4433 For that purpose, this must be 0
4434 when not inside wait_reading_process_output. */
4435 static int waiting_for_user_input_p
;
4438 wait_reading_process_output_unwind (Lisp_Object data
)
4440 waiting_for_user_input_p
= XINT (data
);
4444 /* This is here so breakpoints can be put on it. */
4446 wait_reading_process_output_1 (void)
4450 /* Use a wrapper around select to work around a bug in gdb 5.3.
4451 Normally, the wrapper is optimized away by inlining.
4453 If emacs is stopped inside select, the gdb backtrace doesn't
4454 show the function which called select, so it is practically
4455 impossible to step through wait_reading_process_output. */
4459 select_wrapper (int n
, fd_set
*rfd
, fd_set
*wfd
, fd_set
*xfd
, struct timeval
*tmo
)
4461 return select (n
, rfd
, wfd
, xfd
, tmo
);
4463 #define select select_wrapper
4466 /* Read and dispose of subprocess output while waiting for timeout to
4467 elapse and/or keyboard input to be available.
4470 timeout in seconds, or
4471 zero for no limit, or
4472 -1 means gobble data immediately available but don't wait for any.
4475 an additional duration to wait, measured in microseconds.
4476 If this is nonzero and time_limit is 0, then the timeout
4477 consists of MICROSECS only.
4479 READ_KBD is a lisp value:
4480 0 to ignore keyboard input, or
4481 1 to return when input is available, or
4482 -1 meaning caller will actually read the input, so don't throw to
4483 the quit handler, or
4485 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4486 output that arrives.
4488 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4489 (and gobble terminal input into the buffer if any arrives).
4491 If WAIT_PROC is specified, wait until something arrives from that
4492 process. The return value is true if we read some input from
4495 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4496 (suspending output from other processes). A negative value
4497 means don't run any timers either.
4499 If WAIT_PROC is specified, then the function returns true if we
4500 received input from that process before the timeout elapsed.
4501 Otherwise, return true if we received input from any process. */
4504 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4505 wait_for_cell
, wait_proc
, just_wait_proc
)
4506 int time_limit
, microsecs
, read_kbd
, do_display
;
4507 Lisp_Object wait_for_cell
;
4508 struct Lisp_Process
*wait_proc
;
4511 register int channel
, nfds
;
4512 SELECT_TYPE Available
;
4513 #ifdef NON_BLOCKING_CONNECT
4514 SELECT_TYPE Connecting
;
4517 int check_delay
, no_avail
;
4520 EMACS_TIME timeout
, end_time
;
4521 int wait_channel
= -1;
4522 int got_some_input
= 0;
4523 int count
= SPECPDL_INDEX ();
4525 FD_ZERO (&Available
);
4526 #ifdef NON_BLOCKING_CONNECT
4527 FD_ZERO (&Connecting
);
4530 if (time_limit
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4531 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4532 message ("Blocking call to accept-process-output with quit inhibited!!");
4534 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4535 if (wait_proc
!= NULL
)
4536 wait_channel
= wait_proc
->infd
;
4538 record_unwind_protect (wait_reading_process_output_unwind
,
4539 make_number (waiting_for_user_input_p
));
4540 waiting_for_user_input_p
= read_kbd
;
4542 /* Since we may need to wait several times,
4543 compute the absolute time to return at. */
4544 if (time_limit
|| microsecs
)
4546 EMACS_GET_TIME (end_time
);
4547 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4548 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4553 int timeout_reduced_for_timers
= 0;
4555 /* If calling from keyboard input, do not quit
4556 since we want to return C-g as an input character.
4557 Otherwise, do pending quit if requested. */
4562 process_pending_signals ();
4565 /* Exit now if the cell we're waiting for became non-nil. */
4566 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4569 /* Compute time from now till when time limit is up */
4570 /* Exit if already run out */
4571 if (time_limit
== -1)
4573 /* -1 specified for timeout means
4574 gobble output available now
4575 but don't wait at all. */
4577 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4579 else if (time_limit
|| microsecs
)
4581 EMACS_GET_TIME (timeout
);
4582 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4583 if (EMACS_TIME_NEG_P (timeout
))
4588 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4591 /* Normally we run timers here.
4592 But not if wait_for_cell; in those cases,
4593 the wait is supposed to be short,
4594 and those callers cannot handle running arbitrary Lisp code here. */
4595 if (NILP (wait_for_cell
)
4596 && just_wait_proc
>= 0)
4598 EMACS_TIME timer_delay
;
4602 int old_timers_run
= timers_run
;
4603 struct buffer
*old_buffer
= current_buffer
;
4604 Lisp_Object old_window
= selected_window
;
4606 timer_delay
= timer_check (1);
4608 /* If a timer has run, this might have changed buffers
4609 an alike. Make read_key_sequence aware of that. */
4610 if (timers_run
!= old_timers_run
4611 && (old_buffer
!= current_buffer
4612 || !EQ (old_window
, selected_window
))
4613 && waiting_for_user_input_p
== -1)
4614 record_asynch_buffer_change ();
4616 if (timers_run
!= old_timers_run
&& do_display
)
4617 /* We must retry, since a timer may have requeued itself
4618 and that could alter the time_delay. */
4619 redisplay_preserve_echo_area (9);
4623 while (!detect_input_pending ());
4625 /* If there is unread keyboard input, also return. */
4627 && requeued_events_pending_p ())
4630 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4632 EMACS_TIME difference
;
4633 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4634 if (EMACS_TIME_NEG_P (difference
))
4636 timeout
= timer_delay
;
4637 timeout_reduced_for_timers
= 1;
4640 /* If time_limit is -1, we are not going to wait at all. */
4641 else if (time_limit
!= -1)
4643 /* This is so a breakpoint can be put here. */
4644 wait_reading_process_output_1 ();
4648 /* Cause C-g and alarm signals to take immediate action,
4649 and cause input available signals to zero out timeout.
4651 It is important that we do this before checking for process
4652 activity. If we get a SIGCHLD after the explicit checks for
4653 process activity, timeout is the only way we will know. */
4655 set_waiting_for_input (&timeout
);
4657 /* If status of something has changed, and no input is
4658 available, notify the user of the change right away. After
4659 this explicit check, we'll let the SIGCHLD handler zap
4660 timeout to get our attention. */
4661 if (update_tick
!= process_tick
)
4664 #ifdef NON_BLOCKING_CONNECT
4668 if (kbd_on_hold_p ())
4671 Atemp
= input_wait_mask
;
4672 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4674 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4675 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4678 #ifdef NON_BLOCKING_CONNECT
4679 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4683 (SELECT_TYPE
*)0, &timeout
)
4686 /* It's okay for us to do this and then continue with
4687 the loop, since timeout has already been zeroed out. */
4688 clear_waiting_for_input ();
4689 status_notify (NULL
);
4690 if (do_display
) redisplay_preserve_echo_area (13);
4694 /* Don't wait for output from a non-running process. Just
4695 read whatever data has already been received. */
4696 if (wait_proc
&& wait_proc
->raw_status_new
)
4697 update_status (wait_proc
);
4699 && ! EQ (wait_proc
->status
, Qrun
)
4700 && ! EQ (wait_proc
->status
, Qconnect
))
4702 int nread
, total_nread
= 0;
4704 clear_waiting_for_input ();
4705 XSETPROCESS (proc
, wait_proc
);
4707 /* Read data from the process, until we exhaust it. */
4708 while (wait_proc
->infd
>= 0)
4710 nread
= read_process_output (proc
, wait_proc
->infd
);
4717 total_nread
+= nread
;
4721 else if (nread
== -1 && EIO
== errno
)
4725 else if (nread
== -1 && EAGAIN
== errno
)
4729 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4733 if (total_nread
> 0 && do_display
)
4734 redisplay_preserve_echo_area (10);
4739 /* Wait till there is something to do */
4741 if (wait_proc
&& just_wait_proc
)
4743 if (wait_proc
->infd
< 0) /* Terminated */
4745 FD_SET (wait_proc
->infd
, &Available
);
4747 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4749 else if (!NILP (wait_for_cell
))
4751 Available
= non_process_wait_mask
;
4753 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4758 Available
= non_keyboard_wait_mask
;
4760 Available
= input_wait_mask
;
4761 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4762 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4765 /* If frame size has changed or the window is newly mapped,
4766 redisplay now, before we start to wait. There is a race
4767 condition here; if a SIGIO arrives between now and the select
4768 and indicates that a frame is trashed, the select may block
4769 displaying a trashed screen. */
4770 if (frame_garbaged
&& do_display
)
4772 clear_waiting_for_input ();
4773 redisplay_preserve_echo_area (11);
4775 set_waiting_for_input (&timeout
);
4779 if (read_kbd
&& detect_input_pending ())
4786 #ifdef NON_BLOCKING_CONNECT
4788 Connecting
= connect_wait_mask
;
4791 #ifdef ADAPTIVE_READ_BUFFERING
4792 /* Set the timeout for adaptive read buffering if any
4793 process has non-zero read_output_skip and non-zero
4794 read_output_delay, and we are not reading output for a
4795 specific wait_channel. It is not executed if
4796 Vprocess_adaptive_read_buffering is nil. */
4797 if (process_output_skip
&& check_delay
> 0)
4799 int usecs
= EMACS_USECS (timeout
);
4800 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4801 usecs
= READ_OUTPUT_DELAY_MAX
;
4802 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4804 proc
= chan_process
[channel
];
4807 /* Find minimum non-zero read_output_delay among the
4808 processes with non-zero read_output_skip. */
4809 if (XPROCESS (proc
)->read_output_delay
> 0)
4812 if (!XPROCESS (proc
)->read_output_skip
)
4814 FD_CLR (channel
, &Available
);
4815 XPROCESS (proc
)->read_output_skip
= 0;
4816 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4817 usecs
= XPROCESS (proc
)->read_output_delay
;
4820 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4821 process_output_skip
= 0;
4824 #if defined (USE_GTK) || defined (HAVE_GCONF)
4826 #elif defined (HAVE_NS)
4831 (max (max (max_process_desc
, max_keyboard_desc
),
4834 #ifdef NON_BLOCKING_CONNECT
4835 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4839 (SELECT_TYPE
*)0, &timeout
);
4844 /* Make C-g and alarm signals set flags again */
4845 clear_waiting_for_input ();
4847 /* If we woke up due to SIGWINCH, actually change size now. */
4848 do_pending_window_change (0);
4850 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4851 /* We wanted the full specified time, so return now. */
4855 if (xerrno
== EINTR
)
4857 else if (xerrno
== EBADF
)
4860 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4861 the child's closure of the pts gives the parent a SIGHUP, and
4862 the ptc file descriptor is automatically closed,
4863 yielding EBADF here or at select() call above.
4864 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4865 in m/ibmrt-aix.h), and here we just ignore the select error.
4866 Cleanup occurs c/o status_notify after SIGCLD. */
4867 no_avail
= 1; /* Cannot depend on values returned */
4873 error ("select error: %s", emacs_strerror (xerrno
));
4878 FD_ZERO (&Available
);
4879 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4882 #if 0 /* When polling is used, interrupt_input is 0,
4883 so get_input_pending should read the input.
4884 So this should not be needed. */
4885 /* If we are using polling for input,
4886 and we see input available, make it get read now.
4887 Otherwise it might not actually get read for a second.
4888 And on hpux, since we turn off polling in wait_reading_process_output,
4889 it might never get read at all if we don't spend much time
4890 outside of wait_reading_process_output. */
4891 if (read_kbd
&& interrupt_input
4892 && keyboard_bit_set (&Available
)
4893 && input_polling_used ())
4894 kill (getpid (), SIGALRM
);
4897 /* Check for keyboard input */
4898 /* If there is any, return immediately
4899 to give it higher priority than subprocesses */
4903 int old_timers_run
= timers_run
;
4904 struct buffer
*old_buffer
= current_buffer
;
4905 Lisp_Object old_window
= selected_window
;
4908 if (detect_input_pending_run_timers (do_display
))
4910 swallow_events (do_display
);
4911 if (detect_input_pending_run_timers (do_display
))
4915 /* If a timer has run, this might have changed buffers
4916 an alike. Make read_key_sequence aware of that. */
4917 if (timers_run
!= old_timers_run
4918 && waiting_for_user_input_p
== -1
4919 && (old_buffer
!= current_buffer
4920 || !EQ (old_window
, selected_window
)))
4921 record_asynch_buffer_change ();
4927 /* If there is unread keyboard input, also return. */
4929 && requeued_events_pending_p ())
4932 /* If we are not checking for keyboard input now,
4933 do process events (but don't run any timers).
4934 This is so that X events will be processed.
4935 Otherwise they may have to wait until polling takes place.
4936 That would causes delays in pasting selections, for example.
4938 (We used to do this only if wait_for_cell.) */
4939 if (read_kbd
== 0 && detect_input_pending ())
4941 swallow_events (do_display
);
4942 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4943 if (detect_input_pending ())
4948 /* Exit now if the cell we're waiting for became non-nil. */
4949 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4953 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4954 go read it. This can happen with X on BSD after logging out.
4955 In that case, there really is no input and no SIGIO,
4956 but select says there is input. */
4958 if (read_kbd
&& interrupt_input
4959 && keyboard_bit_set (&Available
) && ! noninteractive
)
4960 kill (getpid (), SIGIO
);
4964 got_some_input
|= nfds
> 0;
4966 /* If checking input just got us a size-change event from X,
4967 obey it now if we should. */
4968 if (read_kbd
|| ! NILP (wait_for_cell
))
4969 do_pending_window_change (0);
4971 /* Check for data from a process. */
4972 if (no_avail
|| nfds
== 0)
4975 /* Really FIRST_PROC_DESC should be 0 on Unix,
4976 but this is safer in the short run. */
4977 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4979 if (FD_ISSET (channel
, &Available
)
4980 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4984 /* If waiting for this channel, arrange to return as
4985 soon as no more input to be processed. No more
4987 if (wait_channel
== channel
)
4993 proc
= chan_process
[channel
];
4997 /* If this is a server stream socket, accept connection. */
4998 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5000 server_accept_connection (proc
, channel
);
5004 /* Read data from the process, starting with our
5005 buffered-ahead character if we have one. */
5007 nread
= read_process_output (proc
, channel
);
5010 /* Since read_process_output can run a filter,
5011 which can call accept-process-output,
5012 don't try to read from any other processes
5013 before doing the select again. */
5014 FD_ZERO (&Available
);
5017 redisplay_preserve_echo_area (12);
5020 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5023 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
5024 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
5026 else if (nread
== -1 && errno
== EAGAIN
)
5030 else if (nread
== -1 && errno
== EAGAIN
)
5032 /* Note that we cannot distinguish between no input
5033 available now and a closed pipe.
5034 With luck, a closed pipe will be accompanied by
5035 subprocess termination and SIGCHLD. */
5036 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5038 #endif /* O_NDELAY */
5039 #endif /* O_NONBLOCK */
5041 /* On some OSs with ptys, when the process on one end of
5042 a pty exits, the other end gets an error reading with
5043 errno = EIO instead of getting an EOF (0 bytes read).
5044 Therefore, if we get an error reading and errno =
5045 EIO, just continue, because the child process has
5046 exited and should clean itself up soon (e.g. when we
5049 However, it has been known to happen that the SIGCHLD
5050 got lost. So raise the signal again just in case.
5052 else if (nread
== -1 && errno
== EIO
)
5054 /* Clear the descriptor now, so we only raise the
5055 signal once. Don't do this if `process' is only
5057 if (XPROCESS (proc
)->pid
!= -2)
5059 FD_CLR (channel
, &input_wait_mask
);
5060 FD_CLR (channel
, &non_keyboard_wait_mask
);
5062 kill (getpid (), SIGCHLD
);
5065 #endif /* HAVE_PTYS */
5066 /* If we can detect process termination, don't consider the process
5067 gone just because its pipe is closed. */
5069 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5074 /* Preserve status of processes already terminated. */
5075 XPROCESS (proc
)->tick
= ++process_tick
;
5076 deactivate_process (proc
);
5077 if (XPROCESS (proc
)->raw_status_new
)
5078 update_status (XPROCESS (proc
));
5079 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5080 XPROCESS (proc
)->status
5081 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5084 #ifdef NON_BLOCKING_CONNECT
5085 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
5086 && FD_ISSET (channel
, &connect_wait_mask
))
5088 struct Lisp_Process
*p
;
5090 FD_CLR (channel
, &connect_wait_mask
);
5091 if (--num_pending_connects
< 0)
5094 proc
= chan_process
[channel
];
5098 p
= XPROCESS (proc
);
5101 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5102 So only use it on systems where it is known to work. */
5104 int xlen
= sizeof (xerrno
);
5105 if (getsockopt (channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5110 struct sockaddr pname
;
5111 int pnamelen
= sizeof (pname
);
5113 /* If connection failed, getpeername will fail. */
5115 if (getpeername (channel
, &pname
, &pnamelen
) < 0)
5117 /* Obtain connect failure code through error slippage. */
5120 if (errno
== ENOTCONN
&& read (channel
, &dummy
, 1) < 0)
5127 p
->tick
= ++process_tick
;
5128 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
5129 deactivate_process (proc
);
5134 /* Execute the sentinel here. If we had relied on
5135 status_notify to do it later, it will read input
5136 from the process before calling the sentinel. */
5137 exec_sentinel (proc
, build_string ("open\n"));
5138 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
5140 FD_SET (p
->infd
, &input_wait_mask
);
5141 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5145 #endif /* NON_BLOCKING_CONNECT */
5146 } /* end for each file descriptor */
5147 } /* end while exit conditions not met */
5149 unbind_to (count
, Qnil
);
5151 /* If calling from keyboard input, do not quit
5152 since we want to return C-g as an input character.
5153 Otherwise, do pending quit if requested. */
5156 /* Prevent input_pending from remaining set if we quit. */
5157 clear_input_pending ();
5161 return got_some_input
;
5164 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5167 read_process_output_call (Lisp_Object fun_and_args
)
5169 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5173 read_process_output_error_handler (Lisp_Object error
)
5175 cmd_error_internal (error
, "error in process filter: ");
5177 update_echo_area ();
5178 Fsleep_for (make_number (2), Qnil
);
5182 /* Read pending output from the process channel,
5183 starting with our buffered-ahead character if we have one.
5184 Yield number of decoded characters read.
5186 This function reads at most 4096 characters.
5187 If you want to read all available subprocess output,
5188 you must call it repeatedly until it returns zero.
5190 The characters read are decoded according to PROC's coding-system
5194 read_process_output (Lisp_Object proc
, register int channel
)
5196 register int nbytes
;
5198 register Lisp_Object outstream
;
5199 register struct Lisp_Process
*p
= XPROCESS (proc
);
5200 register int opoint
;
5201 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5202 int carryover
= p
->decoding_carryover
;
5204 int count
= SPECPDL_INDEX ();
5205 Lisp_Object odeactivate
;
5207 chars
= (char *) alloca (carryover
+ readmax
);
5209 /* See the comment above. */
5210 memcpy (chars
, SDATA (p
->decoding_buf
), carryover
);
5212 #ifdef DATAGRAM_SOCKETS
5213 /* We have a working select, so proc_buffered_char is always -1. */
5214 if (DATAGRAM_CHAN_P (channel
))
5216 int len
= datagram_address
[channel
].len
;
5217 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5218 0, datagram_address
[channel
].sa
, &len
);
5222 if (proc_buffered_char
[channel
] < 0)
5224 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5225 #ifdef ADAPTIVE_READ_BUFFERING
5226 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5228 int delay
= p
->read_output_delay
;
5231 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5234 process_output_delay_count
++;
5235 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5238 else if (delay
> 0 && (nbytes
== readmax
))
5240 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5242 process_output_delay_count
--;
5244 p
->read_output_delay
= delay
;
5247 p
->read_output_skip
= 1;
5248 process_output_skip
= 1;
5255 chars
[carryover
] = proc_buffered_char
[channel
];
5256 proc_buffered_char
[channel
] = -1;
5257 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5261 nbytes
= nbytes
+ 1;
5264 p
->decoding_carryover
= 0;
5266 /* At this point, NBYTES holds number of bytes just received
5267 (including the one in proc_buffered_char[channel]). */
5270 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5272 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5275 /* Now set NBYTES how many bytes we must decode. */
5276 nbytes
+= carryover
;
5278 odeactivate
= Vdeactivate_mark
;
5279 /* There's no good reason to let process filters change the current
5280 buffer, and many callers of accept-process-output, sit-for, and
5281 friends don't expect current-buffer to be changed from under them. */
5282 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
5284 /* Read and dispose of the process output. */
5285 outstream
= p
->filter
;
5286 if (!NILP (outstream
))
5288 Lisp_Object obuffer
, okeymap
;
5290 int outer_running_asynch_code
= running_asynch_code
;
5291 int waiting
= waiting_for_user_input_p
;
5293 /* No need to gcpro these, because all we do with them later
5294 is test them for EQness, and none of them should be a string. */
5295 XSETBUFFER (obuffer
, current_buffer
);
5296 okeymap
= current_buffer
->keymap
;
5298 /* We inhibit quit here instead of just catching it so that
5299 hitting ^G when a filter happens to be running won't screw
5301 specbind (Qinhibit_quit
, Qt
);
5302 specbind (Qlast_nonmenu_event
, Qt
);
5304 /* In case we get recursively called,
5305 and we already saved the match data nonrecursively,
5306 save the same match data in safely recursive fashion. */
5307 if (outer_running_asynch_code
)
5310 /* Don't clobber the CURRENT match data, either! */
5311 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5312 restore_search_regs ();
5313 record_unwind_save_match_data ();
5314 Fset_match_data (tem
, Qt
);
5317 /* For speed, if a search happens within this code,
5318 save the match data in a special nonrecursive fashion. */
5319 running_asynch_code
= 1;
5321 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5322 text
= coding
->dst_object
;
5323 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5324 /* A new coding system might be found. */
5325 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5327 p
->decode_coding_system
= Vlast_coding_system_used
;
5329 /* Don't call setup_coding_system for
5330 proc_decode_coding_system[channel] here. It is done in
5331 detect_coding called via decode_coding above. */
5333 /* If a coding system for encoding is not yet decided, we set
5334 it as the same as coding-system for decoding.
5336 But, before doing that we must check if
5337 proc_encode_coding_system[p->outfd] surely points to a
5338 valid memory because p->outfd will be changed once EOF is
5339 sent to the process. */
5340 if (NILP (p
->encode_coding_system
)
5341 && proc_encode_coding_system
[p
->outfd
])
5343 p
->encode_coding_system
5344 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5345 setup_coding_system (p
->encode_coding_system
,
5346 proc_encode_coding_system
[p
->outfd
]);
5350 if (coding
->carryover_bytes
> 0)
5352 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5353 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5354 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5355 coding
->carryover_bytes
);
5356 p
->decoding_carryover
= coding
->carryover_bytes
;
5358 if (SBYTES (text
) > 0)
5359 internal_condition_case_1 (read_process_output_call
,
5361 Fcons (proc
, Fcons (text
, Qnil
))),
5362 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5363 read_process_output_error_handler
);
5365 /* If we saved the match data nonrecursively, restore it now. */
5366 restore_search_regs ();
5367 running_asynch_code
= outer_running_asynch_code
;
5369 /* Restore waiting_for_user_input_p as it was
5370 when we were called, in case the filter clobbered it. */
5371 waiting_for_user_input_p
= waiting
;
5373 #if 0 /* Call record_asynch_buffer_change unconditionally,
5374 because we might have changed minor modes or other things
5375 that affect key bindings. */
5376 if (! EQ (Fcurrent_buffer (), obuffer
)
5377 || ! EQ (current_buffer
->keymap
, okeymap
))
5379 /* But do it only if the caller is actually going to read events.
5380 Otherwise there's no need to make him wake up, and it could
5381 cause trouble (for example it would make sit_for return). */
5382 if (waiting_for_user_input_p
== -1)
5383 record_asynch_buffer_change ();
5386 /* If no filter, write into buffer if it isn't dead. */
5387 else if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5389 Lisp_Object old_read_only
;
5390 int old_begv
, old_zv
;
5391 int old_begv_byte
, old_zv_byte
;
5392 int before
, before_byte
;
5397 Fset_buffer (p
->buffer
);
5399 opoint_byte
= PT_BYTE
;
5400 old_read_only
= current_buffer
->read_only
;
5403 old_begv_byte
= BEGV_BYTE
;
5404 old_zv_byte
= ZV_BYTE
;
5406 current_buffer
->read_only
= Qnil
;
5408 /* Insert new output into buffer
5409 at the current end-of-output marker,
5410 thus preserving logical ordering of input and output. */
5411 if (XMARKER (p
->mark
)->buffer
)
5412 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5413 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5416 SET_PT_BOTH (ZV
, ZV_BYTE
);
5418 before_byte
= PT_BYTE
;
5420 /* If the output marker is outside of the visible region, save
5421 the restriction and widen. */
5422 if (! (BEGV
<= PT
&& PT
<= ZV
))
5425 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5426 text
= coding
->dst_object
;
5427 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5428 /* A new coding system might be found. See the comment in the
5429 similar code in the previous `if' block. */
5430 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5432 p
->decode_coding_system
= Vlast_coding_system_used
;
5433 if (NILP (p
->encode_coding_system
)
5434 && proc_encode_coding_system
[p
->outfd
])
5436 p
->encode_coding_system
5437 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5438 setup_coding_system (p
->encode_coding_system
,
5439 proc_encode_coding_system
[p
->outfd
]);
5442 if (coding
->carryover_bytes
> 0)
5444 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5445 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5446 memcpy (SDATA (p
->decoding_buf
), coding
->carryover
,
5447 coding
->carryover_bytes
);
5448 p
->decoding_carryover
= coding
->carryover_bytes
;
5450 /* Adjust the multibyteness of TEXT to that of the buffer. */
5451 if (NILP (current_buffer
->enable_multibyte_characters
)
5452 != ! STRING_MULTIBYTE (text
))
5453 text
= (STRING_MULTIBYTE (text
)
5454 ? Fstring_as_unibyte (text
)
5455 : Fstring_to_multibyte (text
));
5456 /* Insert before markers in case we are inserting where
5457 the buffer's mark is, and the user's next command is Meta-y. */
5458 insert_from_string_before_markers (text
, 0, 0,
5459 SCHARS (text
), SBYTES (text
), 0);
5461 /* Make sure the process marker's position is valid when the
5462 process buffer is changed in the signal_after_change above.
5463 W3 is known to do that. */
5464 if (BUFFERP (p
->buffer
)
5465 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5466 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5468 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5470 update_mode_lines
++;
5472 /* Make sure opoint and the old restrictions
5473 float ahead of any new text just as point would. */
5474 if (opoint
>= before
)
5476 opoint
+= PT
- before
;
5477 opoint_byte
+= PT_BYTE
- before_byte
;
5479 if (old_begv
> before
)
5481 old_begv
+= PT
- before
;
5482 old_begv_byte
+= PT_BYTE
- before_byte
;
5484 if (old_zv
>= before
)
5486 old_zv
+= PT
- before
;
5487 old_zv_byte
+= PT_BYTE
- before_byte
;
5490 /* If the restriction isn't what it should be, set it. */
5491 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5492 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5495 current_buffer
->read_only
= old_read_only
;
5496 SET_PT_BOTH (opoint
, opoint_byte
);
5498 /* Handling the process output should not deactivate the mark. */
5499 Vdeactivate_mark
= odeactivate
;
5501 unbind_to (count
, Qnil
);
5505 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5507 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5508 This is intended for use by asynchronous process output filters and sentinels. */)
5511 return (waiting_for_user_input_p
? Qt
: Qnil
);
5514 /* Sending data to subprocess */
5516 jmp_buf send_process_frame
;
5517 Lisp_Object process_sent_to
;
5520 send_process_trap (int ignore
)
5522 SIGNAL_THREAD_CHECK (SIGPIPE
);
5523 sigunblock (sigmask (SIGPIPE
));
5524 longjmp (send_process_frame
, 1);
5527 /* Send some data to process PROC.
5528 BUF is the beginning of the data; LEN is the number of characters.
5529 OBJECT is the Lisp object that the data comes from. If OBJECT is
5530 nil or t, it means that the data comes from C string.
5532 If OBJECT is not nil, the data is encoded by PROC's coding-system
5533 for encoding before it is sent.
5535 This function can evaluate Lisp code and can garbage collect. */
5538 send_process (volatile Lisp_Object proc
, unsigned char *volatile buf
,
5539 volatile int len
, volatile Lisp_Object object
)
5541 /* Use volatile to protect variables from being clobbered by longjmp. */
5542 struct Lisp_Process
*p
= XPROCESS (proc
);
5544 struct coding_system
*coding
;
5545 struct gcpro gcpro1
;
5546 SIGTYPE (*volatile old_sigpipe
) (int);
5550 if (p
->raw_status_new
)
5552 if (! EQ (p
->status
, Qrun
))
5553 error ("Process %s not running", SDATA (p
->name
));
5555 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5557 coding
= proc_encode_coding_system
[p
->outfd
];
5558 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5560 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5561 || (BUFFERP (object
)
5562 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5565 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5566 /* The coding system for encoding was changed to raw-text
5567 because we sent a unibyte text previously. Now we are
5568 sending a multibyte text, thus we must encode it by the
5569 original coding system specified for the current process. */
5570 setup_coding_system (p
->encode_coding_system
, coding
);
5571 coding
->src_multibyte
= 1;
5575 /* For sending a unibyte text, character code conversion should
5576 not take place but EOL conversion should. So, setup raw-text
5577 or one of the subsidiary if we have not yet done it. */
5578 if (CODING_REQUIRE_ENCODING (coding
))
5580 if (CODING_REQUIRE_FLUSHING (coding
))
5582 /* But, before changing the coding, we must flush out data. */
5583 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5584 send_process (proc
, "", 0, Qt
);
5585 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5587 setup_coding_system (raw_text_coding_system
5588 (Vlast_coding_system_used
),
5590 coding
->src_multibyte
= 0;
5593 coding
->dst_multibyte
= 0;
5595 if (CODING_REQUIRE_ENCODING (coding
))
5597 coding
->dst_object
= Qt
;
5598 if (BUFFERP (object
))
5600 int from_byte
, from
, to
;
5601 int save_pt
, save_pt_byte
;
5602 struct buffer
*cur
= current_buffer
;
5604 set_buffer_internal (XBUFFER (object
));
5605 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5607 from_byte
= PTR_BYTE_POS (buf
);
5608 from
= BYTE_TO_CHAR (from_byte
);
5609 to
= BYTE_TO_CHAR (from_byte
+ len
);
5610 TEMP_SET_PT_BOTH (from
, from_byte
);
5611 encode_coding_object (coding
, object
, from
, from_byte
,
5612 to
, from_byte
+ len
, Qt
);
5613 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5614 set_buffer_internal (cur
);
5616 else if (STRINGP (object
))
5618 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5619 SBYTES (object
), Qt
);
5623 coding
->dst_object
= make_unibyte_string (buf
, len
);
5624 coding
->produced
= len
;
5627 len
= coding
->produced
;
5628 object
= coding
->dst_object
;
5629 buf
= SDATA (object
);
5632 if (pty_max_bytes
== 0)
5634 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5635 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5636 if (pty_max_bytes
< 0)
5637 pty_max_bytes
= 250;
5639 pty_max_bytes
= 250;
5641 /* Deduct one, to leave space for the eof. */
5645 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5646 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5647 when returning with longjmp despite being declared volatile. */
5648 if (!setjmp (send_process_frame
))
5650 process_sent_to
= proc
;
5655 /* Send this batch, using one or more write calls. */
5658 int outfd
= p
->outfd
;
5659 old_sigpipe
= (SIGTYPE (*) (int)) signal (SIGPIPE
, send_process_trap
);
5660 #ifdef DATAGRAM_SOCKETS
5661 if (DATAGRAM_CHAN_P (outfd
))
5663 rv
= sendto (outfd
, (char *) buf
, this,
5664 0, datagram_address
[outfd
].sa
,
5665 datagram_address
[outfd
].len
);
5666 if (rv
< 0 && errno
== EMSGSIZE
)
5668 signal (SIGPIPE
, old_sigpipe
);
5669 report_file_error ("sending datagram",
5670 Fcons (proc
, Qnil
));
5676 rv
= emacs_write (outfd
, (char *) buf
, this);
5677 #ifdef ADAPTIVE_READ_BUFFERING
5678 if (p
->read_output_delay
> 0
5679 && p
->adaptive_read_buffering
== 1)
5681 p
->read_output_delay
= 0;
5682 process_output_delay_count
--;
5683 p
->read_output_skip
= 0;
5687 signal (SIGPIPE
, old_sigpipe
);
5693 || errno
== EWOULDBLOCK
5699 /* Buffer is full. Wait, accepting input;
5700 that may allow the program
5701 to finish doing output and read more. */
5705 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5706 /* A gross hack to work around a bug in FreeBSD.
5707 In the following sequence, read(2) returns
5711 write(2) 954 bytes, get EAGAIN
5712 read(2) 1024 bytes in process_read_output
5713 read(2) 11 bytes in process_read_output
5715 That is, read(2) returns more bytes than have
5716 ever been written successfully. The 1033 bytes
5717 read are the 1022 bytes written successfully
5718 after processing (for example with CRs added if
5719 the terminal is set up that way which it is
5720 here). The same bytes will be seen again in a
5721 later read(2), without the CRs. */
5723 if (errno
== EAGAIN
)
5726 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5728 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5730 /* Running filters might relocate buffers or strings.
5731 Arrange to relocate BUF. */
5732 if (BUFFERP (object
))
5733 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5734 else if (STRINGP (object
))
5735 offset
= buf
- SDATA (object
);
5737 #ifdef EMACS_HAS_USECS
5738 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5740 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5743 if (BUFFERP (object
))
5744 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5745 else if (STRINGP (object
))
5746 buf
= offset
+ SDATA (object
);
5751 /* This is a real error. */
5752 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5762 signal (SIGPIPE
, old_sigpipe
);
5763 proc
= process_sent_to
;
5764 p
= XPROCESS (proc
);
5765 p
->raw_status_new
= 0;
5766 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5767 p
->tick
= ++process_tick
;
5768 deactivate_process (proc
);
5769 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5775 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5777 doc
: /* Send current contents of region as input to PROCESS.
5778 PROCESS may be a process, a buffer, the name of a process or buffer, or
5779 nil, indicating the current buffer's process.
5780 Called from program, takes three arguments, PROCESS, START and END.
5781 If the region is more than 500 characters long,
5782 it is sent in several bunches. This may happen even for shorter regions.
5783 Output from processes can arrive in between bunches. */)
5784 (Lisp_Object process
, Lisp_Object start
, Lisp_Object end
)
5789 proc
= get_process (process
);
5790 validate_region (&start
, &end
);
5792 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5793 move_gap (XINT (start
));
5795 start1
= CHAR_TO_BYTE (XINT (start
));
5796 end1
= CHAR_TO_BYTE (XINT (end
));
5797 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5798 Fcurrent_buffer ());
5803 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5805 doc
: /* Send PROCESS the contents of STRING as input.
5806 PROCESS may be a process, a buffer, the name of a process or buffer, or
5807 nil, indicating the current buffer's process.
5808 If STRING is more than 500 characters long,
5809 it is sent in several bunches. This may happen even for shorter strings.
5810 Output from processes can arrive in between bunches. */)
5811 (Lisp_Object process
, Lisp_Object string
)
5814 CHECK_STRING (string
);
5815 proc
= get_process (process
);
5816 send_process (proc
, SDATA (string
),
5817 SBYTES (string
), string
);
5821 /* Return the foreground process group for the tty/pty that
5822 the process P uses. */
5824 emacs_get_tty_pgrp (struct Lisp_Process
*p
)
5829 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5832 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5833 master side. Try the slave side. */
5834 fd
= emacs_open (SDATA (p
->tty_name
), O_RDONLY
, 0);
5838 ioctl (fd
, TIOCGPGRP
, &gid
);
5842 #endif /* defined (TIOCGPGRP ) */
5847 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5848 Sprocess_running_child_p
, 0, 1, 0,
5849 doc
: /* Return t if PROCESS has given the terminal to a child.
5850 If the operating system does not make it possible to find out,
5851 return t unconditionally. */)
5852 (Lisp_Object process
)
5854 /* Initialize in case ioctl doesn't exist or gives an error,
5855 in a way that will cause returning t. */
5858 struct Lisp_Process
*p
;
5860 proc
= get_process (process
);
5861 p
= XPROCESS (proc
);
5863 if (!EQ (p
->type
, Qreal
))
5864 error ("Process %s is not a subprocess",
5867 error ("Process %s is not active",
5870 gid
= emacs_get_tty_pgrp (p
);
5877 /* send a signal number SIGNO to PROCESS.
5878 If CURRENT_GROUP is t, that means send to the process group
5879 that currently owns the terminal being used to communicate with PROCESS.
5880 This is used for various commands in shell mode.
5881 If CURRENT_GROUP is lambda, that means send to the process group
5882 that currently owns the terminal, but only if it is NOT the shell itself.
5884 If NOMSG is zero, insert signal-announcements into process's buffers
5887 If we can, we try to signal PROCESS by sending control characters
5888 down the pty. This allows us to signal inferiors who have changed
5889 their uid, for which killpg would return an EPERM error. */
5892 process_send_signal (Lisp_Object process
, int signo
, Lisp_Object current_group
,
5896 register struct Lisp_Process
*p
;
5900 proc
= get_process (process
);
5901 p
= XPROCESS (proc
);
5903 if (!EQ (p
->type
, Qreal
))
5904 error ("Process %s is not a subprocess",
5907 error ("Process %s is not active",
5911 current_group
= Qnil
;
5913 /* If we are using pgrps, get a pgrp number and make it negative. */
5914 if (NILP (current_group
))
5915 /* Send the signal to the shell's process group. */
5919 #ifdef SIGNALS_VIA_CHARACTERS
5920 /* If possible, send signals to the entire pgrp
5921 by sending an input character to it. */
5923 /* TERMIOS is the latest and bestest, and seems most likely to
5924 work. If the system has it, use it. */
5927 cc_t
*sig_char
= NULL
;
5929 tcgetattr (p
->infd
, &t
);
5934 sig_char
= &t
.c_cc
[VINTR
];
5938 sig_char
= &t
.c_cc
[VQUIT
];
5942 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5943 sig_char
= &t
.c_cc
[VSWTCH
];
5945 sig_char
= &t
.c_cc
[VSUSP
];
5950 if (sig_char
&& *sig_char
!= CDISABLE
)
5952 send_process (proc
, sig_char
, 1, Qnil
);
5955 /* If we can't send the signal with a character,
5956 fall through and send it another way. */
5957 #else /* ! HAVE_TERMIOS */
5959 /* On Berkeley descendants, the following IOCTL's retrieve the
5960 current control characters. */
5961 #if defined (TIOCGLTC) && defined (TIOCGETC)
5969 ioctl (p
->infd
, TIOCGETC
, &c
);
5970 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5973 ioctl (p
->infd
, TIOCGETC
, &c
);
5974 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5978 ioctl (p
->infd
, TIOCGLTC
, &lc
);
5979 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5981 #endif /* ! defined (SIGTSTP) */
5984 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5986 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5993 ioctl (p
->infd
, TCGETA
, &t
);
5994 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5997 ioctl (p
->infd
, TCGETA
, &t
);
5998 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6002 ioctl (p
->infd
, TCGETA
, &t
);
6003 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6005 #endif /* ! defined (SIGTSTP) */
6007 #else /* ! defined (TCGETA) */
6008 Your configuration files are messed up
.
6009 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6010 you'd better be using one of the alternatives above! */
6011 #endif /* ! defined (TCGETA) */
6012 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6013 /* In this case, the code above should alway return. */
6015 #endif /* ! defined HAVE_TERMIOS */
6017 /* The code above may fall through if it can't
6018 handle the signal. */
6019 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6022 /* Get the current pgrp using the tty itself, if we have that.
6023 Otherwise, use the pty to get the pgrp.
6024 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6025 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6026 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6027 His patch indicates that if TIOCGPGRP returns an error, then
6028 we should just assume that p->pid is also the process group id. */
6030 gid
= emacs_get_tty_pgrp (p
);
6033 /* If we can't get the information, assume
6034 the shell owns the tty. */
6037 /* It is not clear whether anything really can set GID to -1.
6038 Perhaps on some system one of those ioctls can or could do so.
6039 Or perhaps this is vestigial. */
6042 #else /* ! defined (TIOCGPGRP ) */
6043 /* Can't select pgrps on this system, so we know that
6044 the child itself heads the pgrp. */
6046 #endif /* ! defined (TIOCGPGRP ) */
6048 /* If current_group is lambda, and the shell owns the terminal,
6049 don't send any signal. */
6050 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6058 p
->raw_status_new
= 0;
6060 p
->tick
= ++process_tick
;
6063 status_notify (NULL
);
6064 redisplay_preserve_echo_area (13);
6067 #endif /* ! defined (SIGCONT) */
6071 flush_pending_output (p
->infd
);
6075 /* If we don't have process groups, send the signal to the immediate
6076 subprocess. That isn't really right, but it's better than any
6077 obvious alternative. */
6080 kill (p
->pid
, signo
);
6084 /* gid may be a pid, or minus a pgrp's number */
6086 if (!NILP (current_group
))
6088 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6089 EMACS_KILLPG (gid
, signo
);
6096 #else /* ! defined (TIOCSIGSEND) */
6097 EMACS_KILLPG (gid
, signo
);
6098 #endif /* ! defined (TIOCSIGSEND) */
6101 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6102 doc
: /* Interrupt process PROCESS.
6103 PROCESS may be a process, a buffer, or the name of a process or buffer.
6104 No arg or nil means current buffer's process.
6105 Second arg CURRENT-GROUP non-nil means send signal to
6106 the current process-group of the process's controlling terminal
6107 rather than to the process's own process group.
6108 If the process is a shell, this means interrupt current subjob
6109 rather than the shell.
6111 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6112 don't send the signal. */)
6113 (Lisp_Object process
, Lisp_Object current_group
)
6115 process_send_signal (process
, SIGINT
, current_group
, 0);
6119 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6120 doc
: /* Kill process PROCESS. May be process or name of one.
6121 See function `interrupt-process' for more details on usage. */)
6122 (Lisp_Object process
, Lisp_Object current_group
)
6124 process_send_signal (process
, SIGKILL
, current_group
, 0);
6128 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6129 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6130 See function `interrupt-process' for more details on usage. */)
6131 (Lisp_Object process
, Lisp_Object current_group
)
6133 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6137 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6138 doc
: /* Stop process PROCESS. May be process or name of one.
6139 See function `interrupt-process' for more details on usage.
6140 If PROCESS is a network or serial process, inhibit handling of incoming
6142 (Lisp_Object process
, Lisp_Object current_group
)
6145 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6147 struct Lisp_Process
*p
;
6149 p
= XPROCESS (process
);
6150 if (NILP (p
->command
)
6153 FD_CLR (p
->infd
, &input_wait_mask
);
6154 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6161 error ("No SIGTSTP support");
6163 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6168 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6169 doc
: /* Continue process PROCESS. May be process or name of one.
6170 See function `interrupt-process' for more details on usage.
6171 If PROCESS is a network or serial process, resume handling of incoming
6173 (Lisp_Object process
, Lisp_Object current_group
)
6176 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6178 struct Lisp_Process
*p
;
6180 p
= XPROCESS (process
);
6181 if (EQ (p
->command
, Qt
)
6183 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6185 FD_SET (p
->infd
, &input_wait_mask
);
6186 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6188 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6189 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6192 tcflush (p
->infd
, TCIFLUSH
);
6200 process_send_signal (process
, SIGCONT
, current_group
, 0);
6202 error ("No SIGCONT support");
6207 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6208 2, 2, "sProcess (name or number): \nnSignal code: ",
6209 doc
: /* Send PROCESS the signal with code SIGCODE.
6210 PROCESS may also be a number specifying the process id of the
6211 process to signal; in this case, the process need not be a child of
6213 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6214 (Lisp_Object process
, Lisp_Object sigcode
)
6218 if (INTEGERP (process
))
6220 pid
= XINT (process
);
6224 if (FLOATP (process
))
6226 pid
= (pid_t
) XFLOAT_DATA (process
);
6230 if (STRINGP (process
))
6233 if (tem
= Fget_process (process
), NILP (tem
))
6235 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6242 process
= get_process (process
);
6247 CHECK_PROCESS (process
);
6248 pid
= XPROCESS (process
)->pid
;
6250 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6254 #define parse_signal(NAME, VALUE) \
6255 else if (!xstrcasecmp (name, NAME)) \
6256 XSETINT (sigcode, VALUE)
6258 if (INTEGERP (sigcode
))
6262 unsigned char *name
;
6264 CHECK_SYMBOL (sigcode
);
6265 name
= SDATA (SYMBOL_NAME (sigcode
));
6267 if (!strncmp (name
, "SIG", 3) || !strncmp (name
, "sig", 3))
6273 parse_signal ("usr1", SIGUSR1
);
6276 parse_signal ("usr2", SIGUSR2
);
6279 parse_signal ("term", SIGTERM
);
6282 parse_signal ("hup", SIGHUP
);
6285 parse_signal ("int", SIGINT
);
6288 parse_signal ("quit", SIGQUIT
);
6291 parse_signal ("ill", SIGILL
);
6294 parse_signal ("abrt", SIGABRT
);
6297 parse_signal ("emt", SIGEMT
);
6300 parse_signal ("kill", SIGKILL
);
6303 parse_signal ("fpe", SIGFPE
);
6306 parse_signal ("bus", SIGBUS
);
6309 parse_signal ("segv", SIGSEGV
);
6312 parse_signal ("sys", SIGSYS
);
6315 parse_signal ("pipe", SIGPIPE
);
6318 parse_signal ("alrm", SIGALRM
);
6321 parse_signal ("urg", SIGURG
);
6324 parse_signal ("stop", SIGSTOP
);
6327 parse_signal ("tstp", SIGTSTP
);
6330 parse_signal ("cont", SIGCONT
);
6333 parse_signal ("chld", SIGCHLD
);
6336 parse_signal ("ttin", SIGTTIN
);
6339 parse_signal ("ttou", SIGTTOU
);
6342 parse_signal ("io", SIGIO
);
6345 parse_signal ("xcpu", SIGXCPU
);
6348 parse_signal ("xfsz", SIGXFSZ
);
6351 parse_signal ("vtalrm", SIGVTALRM
);
6354 parse_signal ("prof", SIGPROF
);
6357 parse_signal ("winch", SIGWINCH
);
6360 parse_signal ("info", SIGINFO
);
6363 error ("Undefined signal name %s", name
);
6368 return make_number (kill (pid
, XINT (sigcode
)));
6371 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6372 doc
: /* Make PROCESS see end-of-file in its input.
6373 EOF comes after any text already sent to it.
6374 PROCESS may be a process, a buffer, the name of a process or buffer, or
6375 nil, indicating the current buffer's process.
6376 If PROCESS is a network connection, or is a process communicating
6377 through a pipe (as opposed to a pty), then you cannot send any more
6378 text to PROCESS after you call this function.
6379 If PROCESS is a serial process, wait until all output written to the
6380 process has been transmitted to the serial port. */)
6381 (Lisp_Object process
)
6384 struct coding_system
*coding
;
6386 if (DATAGRAM_CONN_P (process
))
6389 proc
= get_process (process
);
6390 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6392 /* Make sure the process is really alive. */
6393 if (XPROCESS (proc
)->raw_status_new
)
6394 update_status (XPROCESS (proc
));
6395 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6396 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6398 if (CODING_REQUIRE_FLUSHING (coding
))
6400 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6401 send_process (proc
, "", 0, Qnil
);
6404 if (XPROCESS (proc
)->pty_flag
)
6405 send_process (proc
, "\004", 1, Qnil
);
6406 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6409 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6410 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6412 /* Do nothing on Windows because writes are blocking. */
6416 int old_outfd
, new_outfd
;
6418 #ifdef HAVE_SHUTDOWN
6419 /* If this is a network connection, or socketpair is used
6420 for communication with the subprocess, call shutdown to cause EOF.
6421 (In some old system, shutdown to socketpair doesn't work.
6422 Then we just can't win.) */
6423 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6424 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6425 shutdown (XPROCESS (proc
)->outfd
, 1);
6426 /* In case of socketpair, outfd == infd, so don't close it. */
6427 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6428 emacs_close (XPROCESS (proc
)->outfd
);
6429 #else /* not HAVE_SHUTDOWN */
6430 emacs_close (XPROCESS (proc
)->outfd
);
6431 #endif /* not HAVE_SHUTDOWN */
6432 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6435 old_outfd
= XPROCESS (proc
)->outfd
;
6437 if (!proc_encode_coding_system
[new_outfd
])
6438 proc_encode_coding_system
[new_outfd
]
6439 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6440 memcpy (proc_encode_coding_system
[new_outfd
],
6441 proc_encode_coding_system
[old_outfd
],
6442 sizeof (struct coding_system
));
6443 memset (proc_encode_coding_system
[old_outfd
], 0,
6444 sizeof (struct coding_system
));
6446 XPROCESS (proc
)->outfd
= new_outfd
;
6451 /* On receipt of a signal that a child status has changed, loop asking
6452 about children with changed statuses until the system says there
6455 All we do is change the status; we do not run sentinels or print
6456 notifications. That is saved for the next time keyboard input is
6457 done, in order to avoid timing errors.
6459 ** WARNING: this can be called during garbage collection.
6460 Therefore, it must not be fooled by the presence of mark bits in
6463 ** USG WARNING: Although it is not obvious from the documentation
6464 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6465 signal() before executing at least one wait(), otherwise the
6466 handler will be called again, resulting in an infinite loop. The
6467 relevant portion of the documentation reads "SIGCLD signals will be
6468 queued and the signal-catching function will be continually
6469 reentered until the queue is empty". Invoking signal() causes the
6470 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6473 ** Malloc WARNING: This should never call malloc either directly or
6474 indirectly; if it does, that is a bug */
6478 sigchld_handler (int signo
)
6480 int old_errno
= errno
;
6482 register struct Lisp_Process
*p
;
6483 extern EMACS_TIME
*input_available_clear_time
;
6485 SIGNAL_THREAD_CHECK (signo
);
6496 #endif /* no WUNTRACED */
6497 /* Keep trying to get a status until we get a definitive result. */
6501 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6503 while (pid
< 0 && errno
== EINTR
);
6507 /* PID == 0 means no processes found, PID == -1 means a real
6508 failure. We have done all our job, so return. */
6515 #endif /* no WNOHANG */
6517 /* Find the process that signaled us, and record its status. */
6519 /* The process can have been deleted by Fdelete_process. */
6520 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6522 Lisp_Object xpid
= XCAR (tail
);
6523 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6524 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6526 XSETCAR (tail
, Qnil
);
6527 goto sigchld_end_of_loop
;
6531 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6533 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6535 proc
= XCDR (XCAR (tail
));
6536 p
= XPROCESS (proc
);
6537 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6542 /* Look for an asynchronous process whose pid hasn't been filled
6545 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6547 proc
= XCDR (XCAR (tail
));
6548 p
= XPROCESS (proc
);
6554 /* Change the status of the process that was found. */
6557 int clear_desc_flag
= 0;
6559 p
->tick
= ++process_tick
;
6561 p
->raw_status_new
= 1;
6563 /* If process has terminated, stop waiting for its output. */
6564 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6566 clear_desc_flag
= 1;
6568 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6569 if (clear_desc_flag
)
6571 FD_CLR (p
->infd
, &input_wait_mask
);
6572 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6575 /* Tell wait_reading_process_output that it needs to wake up and
6577 if (input_available_clear_time
)
6578 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6581 /* There was no asynchronous process found for that pid: we have
6582 a synchronous process. */
6585 synch_process_alive
= 0;
6587 /* Report the status of the synchronous process. */
6589 synch_process_retcode
= WRETCODE (w
);
6590 else if (WIFSIGNALED (w
))
6591 synch_process_termsig
= WTERMSIG (w
);
6593 /* Tell wait_reading_process_output that it needs to wake up and
6595 if (input_available_clear_time
)
6596 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6599 sigchld_end_of_loop
:
6602 /* On some systems, we must return right away.
6603 If any more processes want to signal us, we will
6605 Otherwise (on systems that have WNOHANG), loop around
6606 to use up all the processes that have something to tell us. */
6607 #if (defined WINDOWSNT \
6608 || (defined USG && !defined GNU_LINUX \
6609 && !(defined HPUX && defined WNOHANG)))
6612 #endif /* USG, but not HPUX with WNOHANG */
6615 #endif /* SIGCHLD */
6619 exec_sentinel_unwind (Lisp_Object data
)
6621 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6626 exec_sentinel_error_handler (Lisp_Object error
)
6628 cmd_error_internal (error
, "error in process sentinel: ");
6630 update_echo_area ();
6631 Fsleep_for (make_number (2), Qnil
);
6636 exec_sentinel (Lisp_Object proc
, Lisp_Object reason
)
6638 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6639 register struct Lisp_Process
*p
= XPROCESS (proc
);
6640 int count
= SPECPDL_INDEX ();
6641 int outer_running_asynch_code
= running_asynch_code
;
6642 int waiting
= waiting_for_user_input_p
;
6644 if (inhibit_sentinels
)
6647 /* No need to gcpro these, because all we do with them later
6648 is test them for EQness, and none of them should be a string. */
6649 odeactivate
= Vdeactivate_mark
;
6650 XSETBUFFER (obuffer
, current_buffer
);
6651 okeymap
= current_buffer
->keymap
;
6653 /* There's no good reason to let sentinels change the current
6654 buffer, and many callers of accept-process-output, sit-for, and
6655 friends don't expect current-buffer to be changed from under them. */
6656 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6658 sentinel
= p
->sentinel
;
6659 if (NILP (sentinel
))
6662 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6663 assure that it gets restored no matter how the sentinel exits. */
6665 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6666 /* Inhibit quit so that random quits don't screw up a running filter. */
6667 specbind (Qinhibit_quit
, Qt
);
6668 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6670 /* In case we get recursively called,
6671 and we already saved the match data nonrecursively,
6672 save the same match data in safely recursive fashion. */
6673 if (outer_running_asynch_code
)
6676 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6677 restore_search_regs ();
6678 record_unwind_save_match_data ();
6679 Fset_match_data (tem
, Qt
);
6682 /* For speed, if a search happens within this code,
6683 save the match data in a special nonrecursive fashion. */
6684 running_asynch_code
= 1;
6686 internal_condition_case_1 (read_process_output_call
,
6688 Fcons (proc
, Fcons (reason
, Qnil
))),
6689 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6690 exec_sentinel_error_handler
);
6692 /* If we saved the match data nonrecursively, restore it now. */
6693 restore_search_regs ();
6694 running_asynch_code
= outer_running_asynch_code
;
6696 Vdeactivate_mark
= odeactivate
;
6698 /* Restore waiting_for_user_input_p as it was
6699 when we were called, in case the filter clobbered it. */
6700 waiting_for_user_input_p
= waiting
;
6703 if (! EQ (Fcurrent_buffer (), obuffer
)
6704 || ! EQ (current_buffer
->keymap
, okeymap
))
6706 /* But do it only if the caller is actually going to read events.
6707 Otherwise there's no need to make him wake up, and it could
6708 cause trouble (for example it would make sit_for return). */
6709 if (waiting_for_user_input_p
== -1)
6710 record_asynch_buffer_change ();
6712 unbind_to (count
, Qnil
);
6715 /* Report all recent events of a change in process status
6716 (either run the sentinel or output a message).
6717 This is usually done while Emacs is waiting for keyboard input
6718 but can be done at other times. */
6721 status_notify (struct Lisp_Process
*deleting_process
)
6723 register Lisp_Object proc
, buffer
;
6724 Lisp_Object tail
, msg
;
6725 struct gcpro gcpro1
, gcpro2
;
6729 /* We need to gcpro tail; if read_process_output calls a filter
6730 which deletes a process and removes the cons to which tail points
6731 from Vprocess_alist, and then causes a GC, tail is an unprotected
6735 /* Set this now, so that if new processes are created by sentinels
6736 that we run, we get called again to handle their status changes. */
6737 update_tick
= process_tick
;
6739 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6742 register struct Lisp_Process
*p
;
6744 proc
= Fcdr (XCAR (tail
));
6745 p
= XPROCESS (proc
);
6747 if (p
->tick
!= p
->update_tick
)
6749 p
->update_tick
= p
->tick
;
6751 /* If process is still active, read any output that remains. */
6752 while (! EQ (p
->filter
, Qt
)
6753 && ! EQ (p
->status
, Qconnect
)
6754 && ! EQ (p
->status
, Qlisten
)
6755 /* Network or serial process not stopped: */
6756 && ! EQ (p
->command
, Qt
)
6758 && p
!= deleting_process
6759 && read_process_output (proc
, p
->infd
) > 0);
6763 /* Get the text to use for the message. */
6764 if (p
->raw_status_new
)
6766 msg
= status_message (p
);
6768 /* If process is terminated, deactivate it or delete it. */
6770 if (CONSP (p
->status
))
6771 symbol
= XCAR (p
->status
);
6773 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6774 || EQ (symbol
, Qclosed
))
6776 if (delete_exited_processes
)
6777 remove_process (proc
);
6779 deactivate_process (proc
);
6782 /* The actions above may have further incremented p->tick.
6783 So set p->update_tick again
6784 so that an error in the sentinel will not cause
6785 this code to be run again. */
6786 p
->update_tick
= p
->tick
;
6787 /* Now output the message suitably. */
6788 if (!NILP (p
->sentinel
))
6789 exec_sentinel (proc
, msg
);
6790 /* Don't bother with a message in the buffer
6791 when a process becomes runnable. */
6792 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6795 struct buffer
*old
= current_buffer
;
6796 int opoint
, opoint_byte
;
6797 int before
, before_byte
;
6799 /* Avoid error if buffer is deleted
6800 (probably that's why the process is dead, too) */
6801 if (NILP (XBUFFER (buffer
)->name
))
6803 Fset_buffer (buffer
);
6806 opoint_byte
= PT_BYTE
;
6807 /* Insert new output into buffer
6808 at the current end-of-output marker,
6809 thus preserving logical ordering of input and output. */
6810 if (XMARKER (p
->mark
)->buffer
)
6811 Fgoto_char (p
->mark
);
6813 SET_PT_BOTH (ZV
, ZV_BYTE
);
6816 before_byte
= PT_BYTE
;
6818 tem
= current_buffer
->read_only
;
6819 current_buffer
->read_only
= Qnil
;
6820 insert_string ("\nProcess ");
6821 Finsert (1, &p
->name
);
6822 insert_string (" ");
6824 current_buffer
->read_only
= tem
;
6825 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6827 if (opoint
>= before
)
6828 SET_PT_BOTH (opoint
+ (PT
- before
),
6829 opoint_byte
+ (PT_BYTE
- before_byte
));
6831 SET_PT_BOTH (opoint
, opoint_byte
);
6833 set_buffer_internal (old
);
6838 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6843 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6844 Sset_process_coding_system
, 1, 3, 0,
6845 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6846 DECODING will be used to decode subprocess output and ENCODING to
6847 encode subprocess input. */)
6848 (register Lisp_Object process
, Lisp_Object decoding
, Lisp_Object encoding
)
6850 register struct Lisp_Process
*p
;
6852 CHECK_PROCESS (process
);
6853 p
= XPROCESS (process
);
6855 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6857 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6858 Fcheck_coding_system (decoding
);
6859 Fcheck_coding_system (encoding
);
6860 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6861 p
->decode_coding_system
= decoding
;
6862 p
->encode_coding_system
= encoding
;
6863 setup_process_coding_systems (process
);
6868 DEFUN ("process-coding-system",
6869 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6870 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6871 (register Lisp_Object process
)
6873 CHECK_PROCESS (process
);
6874 return Fcons (XPROCESS (process
)->decode_coding_system
,
6875 XPROCESS (process
)->encode_coding_system
);
6878 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6879 Sset_process_filter_multibyte
, 2, 2, 0,
6880 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6881 If FLAG is non-nil, the filter is given multibyte strings.
6882 If FLAG is nil, the filter is given unibyte strings. In this case,
6883 all character code conversion except for end-of-line conversion is
6885 (Lisp_Object process
, Lisp_Object flag
)
6887 register struct Lisp_Process
*p
;
6889 CHECK_PROCESS (process
);
6890 p
= XPROCESS (process
);
6892 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
6893 setup_process_coding_systems (process
);
6898 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6899 Sprocess_filter_multibyte_p
, 1, 1, 0,
6900 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6901 (Lisp_Object process
)
6903 register struct Lisp_Process
*p
;
6904 struct coding_system
*coding
;
6906 CHECK_PROCESS (process
);
6907 p
= XPROCESS (process
);
6908 coding
= proc_decode_coding_system
[p
->infd
];
6909 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
6915 /* Add DESC to the set of keyboard input descriptors. */
6918 add_keyboard_wait_descriptor (int desc
)
6920 FD_SET (desc
, &input_wait_mask
);
6921 FD_SET (desc
, &non_process_wait_mask
);
6922 if (desc
> max_keyboard_desc
)
6923 max_keyboard_desc
= desc
;
6926 static int add_gpm_wait_descriptor_called_flag
;
6929 add_gpm_wait_descriptor (int desc
)
6931 if (! add_gpm_wait_descriptor_called_flag
)
6932 FD_CLR (0, &input_wait_mask
);
6933 add_gpm_wait_descriptor_called_flag
= 1;
6934 FD_SET (desc
, &input_wait_mask
);
6935 FD_SET (desc
, &gpm_wait_mask
);
6936 if (desc
> max_gpm_desc
)
6937 max_gpm_desc
= desc
;
6940 /* From now on, do not expect DESC to give keyboard input. */
6943 delete_keyboard_wait_descriptor (int desc
)
6946 int lim
= max_keyboard_desc
;
6948 FD_CLR (desc
, &input_wait_mask
);
6949 FD_CLR (desc
, &non_process_wait_mask
);
6951 if (desc
== max_keyboard_desc
)
6952 for (fd
= 0; fd
< lim
; fd
++)
6953 if (FD_ISSET (fd
, &input_wait_mask
)
6954 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
6955 && !FD_ISSET (fd
, &gpm_wait_mask
))
6956 max_keyboard_desc
= fd
;
6960 delete_gpm_wait_descriptor (int desc
)
6963 int lim
= max_gpm_desc
;
6965 FD_CLR (desc
, &input_wait_mask
);
6966 FD_CLR (desc
, &non_process_wait_mask
);
6968 if (desc
== max_gpm_desc
)
6969 for (fd
= 0; fd
< lim
; fd
++)
6970 if (FD_ISSET (fd
, &input_wait_mask
)
6971 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
6972 && !FD_ISSET (fd
, &non_process_wait_mask
))
6976 /* Return nonzero if *MASK has a bit set
6977 that corresponds to one of the keyboard input descriptors. */
6980 keyboard_bit_set (fd_set
*mask
)
6984 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6985 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6986 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6992 #else /* not subprocesses */
6994 /* Defined on msdos.c. */
6995 extern int sys_select (int, SELECT_TYPE
*, SELECT_TYPE
*, SELECT_TYPE
*,
6998 /* Implementation of wait_reading_process_output, assuming that there
6999 are no subprocesses. Used only by the MS-DOS build.
7001 Wait for timeout to elapse and/or keyboard input to be available.
7004 timeout in seconds, or
7005 zero for no limit, or
7006 -1 means gobble data immediately available but don't wait for any.
7008 read_kbd is a Lisp_Object:
7009 0 to ignore keyboard input, or
7010 1 to return when input is available, or
7011 -1 means caller will actually read the input, so don't throw to
7014 see full version for other parameters. We know that wait_proc will
7015 always be NULL, since `subprocesses' isn't defined.
7017 do_display != 0 means redisplay should be done to show subprocess
7018 output that arrives.
7020 Return true if we received input from any process. */
7023 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7024 wait_for_cell
, wait_proc
, just_wait_proc
)
7025 int time_limit
, microsecs
, read_kbd
, do_display
;
7026 Lisp_Object wait_for_cell
;
7027 struct Lisp_Process
*wait_proc
;
7031 EMACS_TIME end_time
, timeout
;
7032 SELECT_TYPE waitchannels
;
7035 /* What does time_limit really mean? */
7036 if (time_limit
|| microsecs
)
7038 EMACS_GET_TIME (end_time
);
7039 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7040 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7043 /* Turn off periodic alarms (in case they are in use)
7044 and then turn off any other atimers,
7045 because the select emulator uses alarms. */
7047 turn_on_atimers (0);
7051 int timeout_reduced_for_timers
= 0;
7053 /* If calling from keyboard input, do not quit
7054 since we want to return C-g as an input character.
7055 Otherwise, do pending quit if requested. */
7059 /* Exit now if the cell we're waiting for became non-nil. */
7060 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7063 /* Compute time from now till when time limit is up */
7064 /* Exit if already run out */
7065 if (time_limit
== -1)
7067 /* -1 specified for timeout means
7068 gobble output available now
7069 but don't wait at all. */
7071 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7073 else if (time_limit
|| microsecs
)
7075 EMACS_GET_TIME (timeout
);
7076 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7077 if (EMACS_TIME_NEG_P (timeout
))
7082 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7085 /* If our caller will not immediately handle keyboard events,
7086 run timer events directly.
7087 (Callers that will immediately read keyboard events
7088 call timer_delay on their own.) */
7089 if (NILP (wait_for_cell
))
7091 EMACS_TIME timer_delay
;
7095 int old_timers_run
= timers_run
;
7096 timer_delay
= timer_check (1);
7097 if (timers_run
!= old_timers_run
&& do_display
)
7098 /* We must retry, since a timer may have requeued itself
7099 and that could alter the time delay. */
7100 redisplay_preserve_echo_area (14);
7104 while (!detect_input_pending ());
7106 /* If there is unread keyboard input, also return. */
7108 && requeued_events_pending_p ())
7111 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7113 EMACS_TIME difference
;
7114 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7115 if (EMACS_TIME_NEG_P (difference
))
7117 timeout
= timer_delay
;
7118 timeout_reduced_for_timers
= 1;
7123 /* Cause C-g and alarm signals to take immediate action,
7124 and cause input available signals to zero out timeout. */
7126 set_waiting_for_input (&timeout
);
7128 /* Wait till there is something to do. */
7130 if (! read_kbd
&& NILP (wait_for_cell
))
7131 FD_ZERO (&waitchannels
);
7133 FD_SET (0, &waitchannels
);
7135 /* If a frame has been newly mapped and needs updating,
7136 reprocess its display stuff. */
7137 if (frame_garbaged
&& do_display
)
7139 clear_waiting_for_input ();
7140 redisplay_preserve_echo_area (15);
7142 set_waiting_for_input (&timeout
);
7145 if (read_kbd
&& detect_input_pending ())
7148 FD_ZERO (&waitchannels
);
7151 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7156 /* Make C-g and alarm signals set flags again */
7157 clear_waiting_for_input ();
7159 /* If we woke up due to SIGWINCH, actually change size now. */
7160 do_pending_window_change (0);
7162 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7163 /* We waited the full specified time, so return now. */
7168 /* If the system call was interrupted, then go around the
7170 if (xerrno
== EINTR
)
7171 FD_ZERO (&waitchannels
);
7173 error ("select error: %s", emacs_strerror (xerrno
));
7176 /* Check for keyboard input */
7179 && detect_input_pending_run_timers (do_display
))
7181 swallow_events (do_display
);
7182 if (detect_input_pending_run_timers (do_display
))
7186 /* If there is unread keyboard input, also return. */
7188 && requeued_events_pending_p ())
7191 /* If wait_for_cell. check for keyboard input
7192 but don't run any timers.
7193 ??? (It seems wrong to me to check for keyboard
7194 input at all when wait_for_cell, but the code
7195 has been this way since July 1994.
7196 Try changing this after version 19.31.) */
7197 if (! NILP (wait_for_cell
)
7198 && detect_input_pending ())
7200 swallow_events (do_display
);
7201 if (detect_input_pending ())
7205 /* Exit now if the cell we're waiting for became non-nil. */
7206 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7215 #endif /* not subprocesses */
7217 /* The following functions are needed even if async subprocesses are
7218 not supported. Some of them are no-op stubs in that case. */
7220 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7221 doc
: /* Return the (or a) process associated with BUFFER.
7222 BUFFER may be a buffer or the name of one. */)
7223 (register Lisp_Object buffer
)
7226 register Lisp_Object buf
, tail
, proc
;
7228 if (NILP (buffer
)) return Qnil
;
7229 buf
= Fget_buffer (buffer
);
7230 if (NILP (buf
)) return Qnil
;
7232 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7234 proc
= Fcdr (XCAR (tail
));
7235 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
7238 #endif /* subprocesses */
7242 DEFUN ("process-inherit-coding-system-flag",
7243 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7245 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
7246 If this flag is t, `buffer-file-coding-system' of the buffer
7247 associated with PROCESS will inherit the coding system used to decode
7248 the process output. */)
7249 (register Lisp_Object process
)
7252 CHECK_PROCESS (process
);
7253 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
7255 /* Ignore the argument and return the value of
7256 inherit-process-coding-system. */
7257 return inherit_process_coding_system
? Qt
: Qnil
;
7261 /* Kill all processes associated with `buffer'.
7262 If `buffer' is nil, kill all processes */
7265 kill_buffer_processes (Lisp_Object buffer
)
7268 Lisp_Object tail
, proc
;
7270 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
7272 proc
= XCDR (XCAR (tail
));
7274 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
7276 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
7277 Fdelete_process (proc
);
7278 else if (XPROCESS (proc
)->infd
>= 0)
7279 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
7282 #else /* subprocesses */
7283 /* Since we have no subprocesses, this does nothing. */
7284 #endif /* subprocesses */
7287 /* Stop reading input from keyboard sources. */
7290 hold_keyboard_input (void)
7295 /* Resume reading input from keyboard sources. */
7298 unhold_keyboard_input (void)
7303 /* Return non-zero if keyboard input is on hold, zero otherwise. */
7306 kbd_on_hold_p (void)
7308 return kbd_is_on_hold
;
7312 /* Enumeration of and access to system processes a-la ps(1). */
7314 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7316 doc
: /* Return a list of numerical process IDs of all running processes.
7317 If this functionality is unsupported, return nil.
7319 See `process-attributes' for getting attributes of a process given its ID. */)
7322 return list_system_processes ();
7325 DEFUN ("process-attributes", Fprocess_attributes
,
7326 Sprocess_attributes
, 1, 1, 0,
7327 doc
: /* Return attributes of the process given by its PID, a number.
7329 Value is an alist where each element is a cons cell of the form
7333 If this functionality is unsupported, the value is nil.
7335 See `list-system-processes' for getting a list of all process IDs.
7337 The KEYs of the attributes that this function may return are listed
7338 below, together with the type of the associated VALUE (in parentheses).
7339 Not all platforms support all of these attributes; unsupported
7340 attributes will not appear in the returned alist.
7341 Unless explicitly indicated otherwise, numbers can have either
7342 integer or floating point values.
7344 euid -- Effective user User ID of the process (number)
7345 user -- User name corresponding to euid (string)
7346 egid -- Effective user Group ID of the process (number)
7347 group -- Group name corresponding to egid (string)
7348 comm -- Command name (executable name only) (string)
7349 state -- Process state code, such as "S", "R", or "T" (string)
7350 ppid -- Parent process ID (number)
7351 pgrp -- Process group ID (number)
7352 sess -- Session ID, i.e. process ID of session leader (number)
7353 ttname -- Controlling tty name (string)
7354 tpgid -- ID of foreground process group on the process's tty (number)
7355 minflt -- number of minor page faults (number)
7356 majflt -- number of major page faults (number)
7357 cminflt -- cumulative number of minor page faults (number)
7358 cmajflt -- cumulative number of major page faults (number)
7359 utime -- user time used by the process, in the (HIGH LOW USEC) format
7360 stime -- system time used by the process, in the (HIGH LOW USEC) format
7361 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7362 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7363 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7364 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7365 pri -- priority of the process (number)
7366 nice -- nice value of the process (number)
7367 thcount -- process thread count (number)
7368 start -- time the process started, in the (HIGH LOW USEC) format
7369 vsize -- virtual memory size of the process in KB's (number)
7370 rss -- resident set size of the process in KB's (number)
7371 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7372 pcpu -- percents of CPU time used by the process (floating-point number)
7373 pmem -- percents of total physical memory used by process's resident set
7374 (floating-point number)
7375 args -- command line which invoked the process (string). */)
7378 return system_process_attributes (pid
);
7388 inhibit_sentinels
= 0;
7392 if (! noninteractive
|| initialized
)
7394 signal (SIGCHLD
, sigchld_handler
);
7397 FD_ZERO (&input_wait_mask
);
7398 FD_ZERO (&non_keyboard_wait_mask
);
7399 FD_ZERO (&non_process_wait_mask
);
7400 max_process_desc
= 0;
7402 #ifdef NON_BLOCKING_CONNECT
7403 FD_ZERO (&connect_wait_mask
);
7404 num_pending_connects
= 0;
7407 #ifdef ADAPTIVE_READ_BUFFERING
7408 process_output_delay_count
= 0;
7409 process_output_skip
= 0;
7412 /* Don't do this, it caused infinite select loops. The display
7413 method should call add_keyboard_wait_descriptor on stdin if it
7416 FD_SET (0, &input_wait_mask
);
7419 Vprocess_alist
= Qnil
;
7421 deleted_pid_list
= Qnil
;
7423 for (i
= 0; i
< MAXDESC
; i
++)
7425 chan_process
[i
] = Qnil
;
7426 proc_buffered_char
[i
] = -1;
7428 memset (proc_decode_coding_system
, 0, sizeof proc_decode_coding_system
);
7429 memset (proc_encode_coding_system
, 0, sizeof proc_encode_coding_system
);
7430 #ifdef DATAGRAM_SOCKETS
7431 memset (datagram_address
, 0, sizeof datagram_address
);
7436 Lisp_Object subfeatures
= Qnil
;
7437 const struct socket_options
*sopt
;
7439 #define ADD_SUBFEATURE(key, val) \
7440 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7442 #ifdef NON_BLOCKING_CONNECT
7443 ADD_SUBFEATURE (QCnowait
, Qt
);
7445 #ifdef DATAGRAM_SOCKETS
7446 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7448 #ifdef HAVE_SEQPACKET
7449 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7451 #ifdef HAVE_LOCAL_SOCKETS
7452 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7454 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7456 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7458 #ifdef HAVE_GETSOCKNAME
7459 ADD_SUBFEATURE (QCservice
, Qt
);
7461 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7462 ADD_SUBFEATURE (QCserver
, Qt
);
7465 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7466 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7468 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7470 #endif /* HAVE_SOCKETS */
7472 #if defined (DARWIN_OS)
7473 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7474 processes. As such, we only change the default value. */
7477 char *release
= get_operating_system_release ();
7478 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7479 && release
[1] == '.')) {
7480 Vprocess_connection_type
= Qnil
;
7484 #endif /* subprocesses */
7489 syms_of_process (void)
7493 Qprocessp
= intern_c_string ("processp");
7494 staticpro (&Qprocessp
);
7495 Qrun
= intern_c_string ("run");
7497 Qstop
= intern_c_string ("stop");
7499 Qsignal
= intern_c_string ("signal");
7500 staticpro (&Qsignal
);
7502 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7505 Qexit = intern_c_string ("exit");
7506 staticpro (&Qexit); */
7508 Qopen
= intern_c_string ("open");
7510 Qclosed
= intern_c_string ("closed");
7511 staticpro (&Qclosed
);
7512 Qconnect
= intern_c_string ("connect");
7513 staticpro (&Qconnect
);
7514 Qfailed
= intern_c_string ("failed");
7515 staticpro (&Qfailed
);
7516 Qlisten
= intern_c_string ("listen");
7517 staticpro (&Qlisten
);
7518 Qlocal
= intern_c_string ("local");
7519 staticpro (&Qlocal
);
7520 Qipv4
= intern_c_string ("ipv4");
7523 Qipv6
= intern_c_string ("ipv6");
7526 Qdatagram
= intern_c_string ("datagram");
7527 staticpro (&Qdatagram
);
7528 Qseqpacket
= intern_c_string ("seqpacket");
7529 staticpro (&Qseqpacket
);
7531 QCport
= intern_c_string (":port");
7532 staticpro (&QCport
);
7533 QCspeed
= intern_c_string (":speed");
7534 staticpro (&QCspeed
);
7535 QCprocess
= intern_c_string (":process");
7536 staticpro (&QCprocess
);
7538 QCbytesize
= intern_c_string (":bytesize");
7539 staticpro (&QCbytesize
);
7540 QCstopbits
= intern_c_string (":stopbits");
7541 staticpro (&QCstopbits
);
7542 QCparity
= intern_c_string (":parity");
7543 staticpro (&QCparity
);
7544 Qodd
= intern_c_string ("odd");
7546 Qeven
= intern_c_string ("even");
7548 QCflowcontrol
= intern_c_string (":flowcontrol");
7549 staticpro (&QCflowcontrol
);
7550 Qhw
= intern_c_string ("hw");
7552 Qsw
= intern_c_string ("sw");
7554 QCsummary
= intern_c_string (":summary");
7555 staticpro (&QCsummary
);
7557 Qreal
= intern_c_string ("real");
7559 Qnetwork
= intern_c_string ("network");
7560 staticpro (&Qnetwork
);
7561 Qserial
= intern_c_string ("serial");
7562 staticpro (&Qserial
);
7563 QCbuffer
= intern_c_string (":buffer");
7564 staticpro (&QCbuffer
);
7565 QChost
= intern_c_string (":host");
7566 staticpro (&QChost
);
7567 QCservice
= intern_c_string (":service");
7568 staticpro (&QCservice
);
7569 QClocal
= intern_c_string (":local");
7570 staticpro (&QClocal
);
7571 QCremote
= intern_c_string (":remote");
7572 staticpro (&QCremote
);
7573 QCcoding
= intern_c_string (":coding");
7574 staticpro (&QCcoding
);
7575 QCserver
= intern_c_string (":server");
7576 staticpro (&QCserver
);
7577 QCnowait
= intern_c_string (":nowait");
7578 staticpro (&QCnowait
);
7579 QCsentinel
= intern_c_string (":sentinel");
7580 staticpro (&QCsentinel
);
7581 QClog
= intern_c_string (":log");
7583 QCnoquery
= intern_c_string (":noquery");
7584 staticpro (&QCnoquery
);
7585 QCstop
= intern_c_string (":stop");
7586 staticpro (&QCstop
);
7587 QCoptions
= intern_c_string (":options");
7588 staticpro (&QCoptions
);
7589 QCplist
= intern_c_string (":plist");
7590 staticpro (&QCplist
);
7592 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7593 staticpro (&Qlast_nonmenu_event
);
7595 staticpro (&Vprocess_alist
);
7597 staticpro (&deleted_pid_list
);
7600 #endif /* subprocesses */
7602 QCname
= intern_c_string (":name");
7603 staticpro (&QCname
);
7604 QCtype
= intern_c_string (":type");
7605 staticpro (&QCtype
);
7607 Qeuid
= intern_c_string ("euid");
7609 Qegid
= intern_c_string ("egid");
7611 Quser
= intern_c_string ("user");
7613 Qgroup
= intern_c_string ("group");
7614 staticpro (&Qgroup
);
7615 Qcomm
= intern_c_string ("comm");
7617 Qstate
= intern_c_string ("state");
7618 staticpro (&Qstate
);
7619 Qppid
= intern_c_string ("ppid");
7621 Qpgrp
= intern_c_string ("pgrp");
7623 Qsess
= intern_c_string ("sess");
7625 Qttname
= intern_c_string ("ttname");
7626 staticpro (&Qttname
);
7627 Qtpgid
= intern_c_string ("tpgid");
7628 staticpro (&Qtpgid
);
7629 Qminflt
= intern_c_string ("minflt");
7630 staticpro (&Qminflt
);
7631 Qmajflt
= intern_c_string ("majflt");
7632 staticpro (&Qmajflt
);
7633 Qcminflt
= intern_c_string ("cminflt");
7634 staticpro (&Qcminflt
);
7635 Qcmajflt
= intern_c_string ("cmajflt");
7636 staticpro (&Qcmajflt
);
7637 Qutime
= intern_c_string ("utime");
7638 staticpro (&Qutime
);
7639 Qstime
= intern_c_string ("stime");
7640 staticpro (&Qstime
);
7641 Qtime
= intern_c_string ("time");
7643 Qcutime
= intern_c_string ("cutime");
7644 staticpro (&Qcutime
);
7645 Qcstime
= intern_c_string ("cstime");
7646 staticpro (&Qcstime
);
7647 Qctime
= intern_c_string ("ctime");
7648 staticpro (&Qctime
);
7649 Qpri
= intern_c_string ("pri");
7651 Qnice
= intern_c_string ("nice");
7653 Qthcount
= intern_c_string ("thcount");
7654 staticpro (&Qthcount
);
7655 Qstart
= intern_c_string ("start");
7656 staticpro (&Qstart
);
7657 Qvsize
= intern_c_string ("vsize");
7658 staticpro (&Qvsize
);
7659 Qrss
= intern_c_string ("rss");
7661 Qetime
= intern_c_string ("etime");
7662 staticpro (&Qetime
);
7663 Qpcpu
= intern_c_string ("pcpu");
7665 Qpmem
= intern_c_string ("pmem");
7667 Qargs
= intern_c_string ("args");
7670 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7671 doc
: /* *Non-nil means delete processes immediately when they exit.
7672 A value of nil means don't delete them until `list-processes' is run. */);
7674 delete_exited_processes
= 1;
7677 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7678 doc
: /* Control type of device used to communicate with subprocesses.
7679 Values are nil to use a pipe, or t or `pty' to use a pty.
7680 The value has no effect if the system has no ptys or if all ptys are busy:
7681 then a pipe is used in any case.
7682 The value takes effect when `start-process' is called. */);
7683 Vprocess_connection_type
= Qt
;
7685 #ifdef ADAPTIVE_READ_BUFFERING
7686 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7687 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7688 On some systems, when Emacs reads the output from a subprocess, the output data
7689 is read in very small blocks, potentially resulting in very poor performance.
7690 This behavior can be remedied to some extent by setting this variable to a
7691 non-nil value, as it will automatically delay reading from such processes, to
7692 allow them to produce more output before Emacs tries to read it.
7693 If the value is t, the delay is reset after each write to the process; any other
7694 non-nil value means that the delay is not reset on write.
7695 The variable takes effect when `start-process' is called. */);
7696 Vprocess_adaptive_read_buffering
= Qt
;
7699 defsubr (&Sprocessp
);
7700 defsubr (&Sget_process
);
7701 defsubr (&Sdelete_process
);
7702 defsubr (&Sprocess_status
);
7703 defsubr (&Sprocess_exit_status
);
7704 defsubr (&Sprocess_id
);
7705 defsubr (&Sprocess_name
);
7706 defsubr (&Sprocess_tty_name
);
7707 defsubr (&Sprocess_command
);
7708 defsubr (&Sset_process_buffer
);
7709 defsubr (&Sprocess_buffer
);
7710 defsubr (&Sprocess_mark
);
7711 defsubr (&Sset_process_filter
);
7712 defsubr (&Sprocess_filter
);
7713 defsubr (&Sset_process_sentinel
);
7714 defsubr (&Sprocess_sentinel
);
7715 defsubr (&Sset_process_window_size
);
7716 defsubr (&Sset_process_inherit_coding_system_flag
);
7717 defsubr (&Sset_process_query_on_exit_flag
);
7718 defsubr (&Sprocess_query_on_exit_flag
);
7719 defsubr (&Sprocess_contact
);
7720 defsubr (&Sprocess_plist
);
7721 defsubr (&Sset_process_plist
);
7722 defsubr (&Slist_processes
);
7723 defsubr (&Sprocess_list
);
7724 defsubr (&Sstart_process
);
7726 defsubr (&Sserial_process_configure
);
7727 defsubr (&Smake_serial_process
);
7728 #endif /* HAVE_SERIAL */
7730 defsubr (&Sset_network_process_option
);
7731 defsubr (&Smake_network_process
);
7732 defsubr (&Sformat_network_address
);
7733 #endif /* HAVE_SOCKETS */
7734 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7736 defsubr (&Snetwork_interface_list
);
7738 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7739 defsubr (&Snetwork_interface_info
);
7741 #endif /* HAVE_SOCKETS ... */
7742 #ifdef DATAGRAM_SOCKETS
7743 defsubr (&Sprocess_datagram_address
);
7744 defsubr (&Sset_process_datagram_address
);
7746 defsubr (&Saccept_process_output
);
7747 defsubr (&Sprocess_send_region
);
7748 defsubr (&Sprocess_send_string
);
7749 defsubr (&Sinterrupt_process
);
7750 defsubr (&Skill_process
);
7751 defsubr (&Squit_process
);
7752 defsubr (&Sstop_process
);
7753 defsubr (&Scontinue_process
);
7754 defsubr (&Sprocess_running_child_p
);
7755 defsubr (&Sprocess_send_eof
);
7756 defsubr (&Ssignal_process
);
7757 defsubr (&Swaiting_for_user_input_p
);
7758 defsubr (&Sprocess_type
);
7759 defsubr (&Sset_process_coding_system
);
7760 defsubr (&Sprocess_coding_system
);
7761 defsubr (&Sset_process_filter_multibyte
);
7762 defsubr (&Sprocess_filter_multibyte_p
);
7764 #endif /* subprocesses */
7766 defsubr (&Sget_buffer_process
);
7767 defsubr (&Sprocess_inherit_coding_system_flag
);
7768 defsubr (&Slist_system_processes
);
7769 defsubr (&Sprocess_attributes
);
7772 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7773 (do not change this comment) */