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. */
38 #include <sys/types.h> /* some typedefs are used in sys/file.h */
42 #ifdef HAVE_INTTYPES_H
54 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
55 #include <sys/socket.h>
57 #include <netinet/in.h>
58 #include <arpa/inet.h>
60 /* Are local (unix) sockets supported? */
61 #if defined (HAVE_SYS_UN_H)
62 #if !defined (AF_LOCAL) && defined (AF_UNIX)
63 #define AF_LOCAL AF_UNIX
66 #define HAVE_LOCAL_SOCKETS
70 #endif /* HAVE_SOCKETS */
72 #if defined(HAVE_SYS_IOCTL_H)
73 #include <sys/ioctl.h>
74 #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5)
76 #endif /* HAVE_PTYS and no O_NDELAY */
77 #endif /* HAVE_SYS_IOCTL_H */
83 /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */
85 #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H)
86 /* sys/ioctl.h may have been included already */
88 #include <sys/ioctl.h>
99 #include <netinet/in.h>
100 #include <arpa/nameser.h>
110 #include "character.h"
114 #include "termhooks.h"
115 #include "termopts.h"
116 #include "commands.h"
117 #include "keyboard.h"
118 #include "blockinput.h"
119 #include "dispextern.h"
120 #include "composite.h"
123 #if defined (USE_GTK) || defined (HAVE_GCONF)
124 #include "xgselect.h"
125 #endif /* defined (USE_GTK) || defined (HAVE_GCONF) */
127 Lisp_Object Qprocessp
;
128 Lisp_Object Qrun
, Qstop
, Qsignal
;
129 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
130 Lisp_Object Qlocal
, Qipv4
, Qdatagram
, Qseqpacket
;
131 Lisp_Object Qreal
, Qnetwork
, Qserial
;
135 Lisp_Object QCport
, QCspeed
, QCprocess
;
136 Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
137 Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
138 Lisp_Object QCname
, QCbuffer
, QChost
, QCservice
, QCtype
;
139 Lisp_Object QClocal
, QCremote
, QCcoding
;
140 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
141 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
142 Lisp_Object Qlast_nonmenu_event
;
143 /* QCfamily is declared and initialized in xfaces.c,
144 QCfilter in keyboard.c. */
145 extern Lisp_Object QCfamily
, QCfilter
;
147 /* Qexit is declared and initialized in eval.c. */
149 /* QCfamily is defined in xfaces.c. */
150 extern Lisp_Object QCfamily
;
151 /* QCfilter is defined in keyboard.c. */
152 extern Lisp_Object QCfilter
;
154 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
155 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
156 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
157 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
160 #define NETCONN_P(p) (EQ (XPROCESS (p)->type, Qnetwork))
161 #define NETCONN1_P(p) (EQ ((p)->type, Qnetwork))
162 #define SERIALCONN_P(p) (EQ (XPROCESS (p)->type, Qserial))
163 #define SERIALCONN1_P(p) (EQ ((p)->type, Qserial))
165 #define NETCONN_P(p) 0
166 #define NETCONN1_P(p) 0
167 #define SERIALCONN_P(p) 0
168 #define SERIALCONN1_P(p) 0
169 #endif /* HAVE_SOCKETS */
171 /* Define first descriptor number available for subprocesses. */
172 #define FIRST_PROC_DESC 3
174 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
177 #if !defined (SIGCHLD) && defined (SIGCLD)
178 #define SIGCHLD SIGCLD
181 #include "syssignal.h"
185 extern char *get_operating_system_release ();
187 /* Serial processes require termios or Windows. */
188 #if defined (HAVE_TERMIOS) || defined (WINDOWSNT)
193 /* From sysdep.c or w32.c */
194 extern int serial_open (char *port
);
195 extern void serial_configure (struct Lisp_Process
*p
, Lisp_Object contact
);
202 /* t means use pty, nil means use a pipe,
203 maybe other values to come. */
204 static Lisp_Object Vprocess_connection_type
;
206 /* These next two vars are non-static since sysdep.c uses them in the
207 emulation of `select'. */
208 /* Number of events of change of status of a process. */
210 /* Number of events for which the user or sentinel has been notified. */
213 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
215 #ifdef BROKEN_NON_BLOCKING_CONNECT
216 #undef NON_BLOCKING_CONNECT
218 #ifndef NON_BLOCKING_CONNECT
221 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
222 #if defined (O_NONBLOCK) || defined (O_NDELAY)
223 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
224 #define NON_BLOCKING_CONNECT
225 #endif /* EWOULDBLOCK || EINPROGRESS */
226 #endif /* O_NONBLOCK || O_NDELAY */
227 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
228 #endif /* HAVE_SELECT */
229 #endif /* HAVE_SOCKETS */
230 #endif /* NON_BLOCKING_CONNECT */
231 #endif /* BROKEN_NON_BLOCKING_CONNECT */
233 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
234 this system. We need to read full packets, so we need a
235 "non-destructive" select. So we require either native select,
236 or emulation of select using FIONREAD. */
238 #ifdef BROKEN_DATAGRAM_SOCKETS
239 #undef DATAGRAM_SOCKETS
241 #ifndef DATAGRAM_SOCKETS
243 #if defined (HAVE_SELECT) || defined (FIONREAD)
244 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
245 #define DATAGRAM_SOCKETS
246 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
247 #endif /* HAVE_SELECT || FIONREAD */
248 #endif /* HAVE_SOCKETS */
249 #endif /* DATAGRAM_SOCKETS */
250 #endif /* BROKEN_DATAGRAM_SOCKETS */
252 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
253 # define HAVE_SEQPACKET
256 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
257 #ifdef EMACS_HAS_USECS
258 #define ADAPTIVE_READ_BUFFERING
262 #ifdef ADAPTIVE_READ_BUFFERING
263 #define READ_OUTPUT_DELAY_INCREMENT 10000
264 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
265 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
267 /* Number of processes which have a non-zero read_output_delay,
268 and therefore might be delayed for adaptive read buffering. */
270 static int process_output_delay_count
;
272 /* Non-zero if any process has non-nil read_output_skip. */
274 static int process_output_skip
;
276 /* Non-nil means to delay reading process output to improve buffering.
277 A value of t means that delay is reset after each send, any other
278 non-nil value does not reset the delay. A value of nil disables
279 adaptive read buffering completely. */
280 static Lisp_Object Vprocess_adaptive_read_buffering
;
282 #define process_output_delay_count 0
286 #include "sysselect.h"
288 static int keyboard_bit_set
P_ ((SELECT_TYPE
*));
289 static void deactivate_process
P_ ((Lisp_Object
));
290 static void status_notify
P_ ((struct Lisp_Process
*));
291 static int read_process_output
P_ ((Lisp_Object
, int));
292 static void create_pty
P_ ((Lisp_Object
));
294 /* If we support a window system, turn on the code to poll periodically
295 to detect C-g. It isn't actually used when doing interrupt input. */
296 #ifdef HAVE_WINDOW_SYSTEM
297 #define POLL_FOR_INPUT
300 static Lisp_Object
get_process ();
301 static void exec_sentinel ();
303 extern int timers_run
;
305 /* Mask of bits indicating the descriptors that we wait for input on. */
307 static SELECT_TYPE input_wait_mask
;
309 /* Mask that excludes keyboard input descriptor(s). */
311 static SELECT_TYPE non_keyboard_wait_mask
;
313 /* Mask that excludes process input descriptor(s). */
315 static SELECT_TYPE non_process_wait_mask
;
317 /* Mask for the gpm mouse input descriptor. */
319 static SELECT_TYPE gpm_wait_mask
;
321 #ifdef NON_BLOCKING_CONNECT
322 /* Mask of bits indicating the descriptors that we wait for connect to
323 complete on. Once they complete, they are removed from this mask
324 and added to the input_wait_mask and non_keyboard_wait_mask. */
326 static SELECT_TYPE connect_wait_mask
;
328 /* Number of bits set in connect_wait_mask. */
329 static int num_pending_connects
;
331 #define IF_NON_BLOCKING_CONNECT(s) s
333 #define IF_NON_BLOCKING_CONNECT(s)
336 /* The largest descriptor currently in use for a process object. */
337 static int max_process_desc
;
339 /* The largest descriptor currently in use for keyboard input. */
340 static int max_keyboard_desc
;
342 /* The largest descriptor currently in use for gpm mouse input. */
343 static int max_gpm_desc
;
345 /* Nonzero means delete a process right away if it exits. */
346 static int delete_exited_processes
;
348 /* Indexed by descriptor, gives the process (if any) for that descriptor */
349 Lisp_Object chan_process
[MAXDESC
];
351 /* Alist of elements (NAME . PROCESS) */
352 Lisp_Object Vprocess_alist
;
354 /* Buffered-ahead input char from process, indexed by channel.
355 -1 means empty (no char is buffered).
356 Used on sys V where the only way to tell if there is any
357 output from the process is to read at least one char.
358 Always -1 on systems that support FIONREAD. */
360 /* Don't make static; need to access externally. */
361 int proc_buffered_char
[MAXDESC
];
363 /* Table of `struct coding-system' for each process. */
364 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
365 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
367 #ifdef DATAGRAM_SOCKETS
368 /* Table of `partner address' for datagram sockets. */
369 struct sockaddr_and_len
{
372 } datagram_address
[MAXDESC
];
373 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
374 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
376 #define DATAGRAM_CHAN_P(chan) (0)
377 #define DATAGRAM_CONN_P(proc) (0)
380 /* Maximum number of bytes to send to a pty without an eof. */
381 static int pty_max_bytes
;
383 /* Nonzero means don't run process sentinels. This is used
385 int inhibit_sentinels
;
391 /* The file name of the pty opened by allocate_pty. */
393 static char pty_name
[24];
396 /* Compute the Lisp form of the process status, p->status, from
397 the numeric status that was returned by `wait'. */
399 static Lisp_Object
status_convert (int);
403 struct Lisp_Process
*p
;
405 eassert (p
->raw_status_new
);
406 p
->status
= status_convert (p
->raw_status
);
407 p
->raw_status_new
= 0;
410 /* Convert a process status word in Unix format to
411 the list that we use internally. */
414 status_convert (int w
)
417 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
418 else if (WIFEXITED (w
))
419 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
420 WCOREDUMP (w
) ? Qt
: Qnil
));
421 else if (WIFSIGNALED (w
))
422 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
423 WCOREDUMP (w
) ? Qt
: Qnil
));
428 /* Given a status-list, extract the three pieces of information
429 and store them individually through the three pointers. */
432 decode_status (l
, symbol
, code
, coredump
)
450 *code
= XFASTINT (XCAR (tem
));
452 *coredump
= !NILP (tem
);
456 /* Return a string describing a process status list. */
460 struct Lisp_Process
*p
;
462 Lisp_Object status
= p
->status
;
465 Lisp_Object string
, string2
;
467 decode_status (status
, &symbol
, &code
, &coredump
);
469 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
472 synchronize_system_messages_locale ();
473 signame
= strsignal (code
);
475 string
= build_string ("unknown");
480 string
= make_unibyte_string (signame
, strlen (signame
));
481 if (! NILP (Vlocale_coding_system
))
482 string
= (code_convert_string_norecord
483 (string
, Vlocale_coding_system
, 0));
484 c1
= STRING_CHAR ((char *) SDATA (string
));
487 Faset (string
, make_number (0), make_number (c2
));
489 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
490 return concat2 (string
, string2
);
492 else if (EQ (symbol
, Qexit
))
495 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
497 return build_string ("finished\n");
498 string
= Fnumber_to_string (make_number (code
));
499 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
500 return concat3 (build_string ("exited abnormally with code "),
503 else if (EQ (symbol
, Qfailed
))
505 string
= Fnumber_to_string (make_number (code
));
506 string2
= build_string ("\n");
507 return concat3 (build_string ("failed with code "),
511 return Fcopy_sequence (Fsymbol_name (symbol
));
516 /* Open an available pty, returning a file descriptor.
517 Return -1 on failure.
518 The file name of the terminal corresponding to the pty
519 is left in the variable pty_name. */
530 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
531 for (i
= 0; i
< 16; i
++)
534 struct stat stb
; /* Used in some PTY_OPEN. */
535 #ifdef PTY_NAME_SPRINTF
538 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
539 #endif /* no PTY_NAME_SPRINTF */
543 #else /* no PTY_OPEN */
545 { /* Some systems name their pseudoterminals so that there are gaps in
546 the usual sequence - for example, on HP9000/S700 systems, there
547 are no pseudoterminals with names ending in 'f'. So we wait for
548 three failures in a row before deciding that we've reached the
550 int failed_count
= 0;
552 if (stat (pty_name
, &stb
) < 0)
555 if (failed_count
>= 3)
562 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
564 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
567 #endif /* no PTY_OPEN */
571 /* check to make certain that both sides are available
572 this avoids a nasty yet stupid bug in rlogins */
573 #ifdef PTY_TTY_NAME_SPRINTF
576 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
577 #endif /* no PTY_TTY_NAME_SPRINTF */
578 if (access (pty_name
, 6) != 0)
593 #endif /* HAVE_PTYS */
599 register Lisp_Object val
, tem
, name1
;
600 register struct Lisp_Process
*p
;
604 p
= allocate_process ();
612 p
->raw_status_new
= 0;
614 p
->mark
= Fmake_marker ();
615 p
->kill_without_query
= 0;
617 #ifdef ADAPTIVE_READ_BUFFERING
618 p
->adaptive_read_buffering
= 0;
619 p
->read_output_delay
= 0;
620 p
->read_output_skip
= 0;
623 /* If name is already in use, modify it until it is unused. */
628 tem
= Fget_process (name1
);
629 if (NILP (tem
)) break;
630 sprintf (suffix
, "<%d>", i
);
631 name1
= concat2 (name
, build_string (suffix
));
635 XSETPROCESS (val
, p
);
636 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
641 remove_process (proc
)
642 register Lisp_Object proc
;
644 register Lisp_Object pair
;
646 pair
= Frassq (proc
, Vprocess_alist
);
647 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
649 deactivate_process (proc
);
652 /* Setup coding systems of PROCESS. */
655 setup_process_coding_systems (process
)
658 struct Lisp_Process
*p
= XPROCESS (process
);
660 int outch
= p
->outfd
;
661 Lisp_Object coding_system
;
663 if (inch
< 0 || outch
< 0)
666 if (!proc_decode_coding_system
[inch
])
667 proc_decode_coding_system
[inch
]
668 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
669 coding_system
= p
->decode_coding_system
;
670 if (! NILP (p
->filter
))
672 else if (BUFFERP (p
->buffer
))
674 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
675 coding_system
= raw_text_coding_system (coding_system
);
677 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
679 if (!proc_encode_coding_system
[outch
])
680 proc_encode_coding_system
[outch
]
681 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
682 setup_coding_system (p
->encode_coding_system
,
683 proc_encode_coding_system
[outch
]);
686 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
687 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. */)
697 register Lisp_Object name
;
702 return Fcdr (Fassoc (name
, Vprocess_alist
));
705 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
706 doc
: /* Return the (or a) process associated with BUFFER.
707 BUFFER may be a buffer or the name of one. */)
709 register Lisp_Object buffer
;
711 register Lisp_Object buf
, tail
, proc
;
713 if (NILP (buffer
)) return Qnil
;
714 buf
= Fget_buffer (buffer
);
715 if (NILP (buf
)) return Qnil
;
717 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
719 proc
= Fcdr (XCAR (tail
));
720 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
726 /* This is how commands for the user decode process arguments. It
727 accepts a process, a process name, a buffer, a buffer name, or nil.
728 Buffers denote the first process in the buffer, and nil denotes the
733 register Lisp_Object name
;
735 register Lisp_Object proc
, obj
;
738 obj
= Fget_process (name
);
740 obj
= Fget_buffer (name
);
742 error ("Process %s does not exist", SDATA (name
));
744 else if (NILP (name
))
745 obj
= Fcurrent_buffer ();
749 /* Now obj should be either a buffer object or a process object.
753 proc
= Fget_buffer_process (obj
);
755 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
767 /* Fdelete_process promises to immediately forget about the process, but in
768 reality, Emacs needs to remember those processes until they have been
769 treated by sigchld_handler; otherwise this handler would consider the
770 process as being synchronous and say that the synchronous process is
772 static Lisp_Object deleted_pid_list
;
775 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
776 doc
: /* Delete PROCESS: kill it and forget about it immediately.
777 PROCESS may be a process, a buffer, the name of a process or buffer, or
778 nil, indicating the current buffer's process. */)
780 register Lisp_Object process
;
782 register struct Lisp_Process
*p
;
784 process
= get_process (process
);
785 p
= XPROCESS (process
);
787 p
->raw_status_new
= 0;
788 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
790 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
791 p
->tick
= ++process_tick
;
793 redisplay_preserve_echo_area (13);
795 else if (p
->infd
>= 0)
799 /* Assignment to EMACS_INT stops GCC whining about limited range
801 EMACS_INT pid
= p
->pid
;
803 /* No problem storing the pid here, as it is still in Vprocess_alist. */
804 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
805 /* GC treated elements set to nil. */
806 Fdelq (Qnil
, deleted_pid_list
));
807 /* If the process has already signaled, remove it from the list. */
808 if (p
->raw_status_new
)
811 if (CONSP (p
->status
))
812 symbol
= XCAR (p
->status
);
813 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
815 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
819 Fkill_process (process
, Qnil
);
820 /* Do this now, since remove_process will make sigchld_handler do nothing. */
822 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
823 p
->tick
= ++process_tick
;
825 redisplay_preserve_echo_area (13);
828 remove_process (process
);
832 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
833 doc
: /* Return the status of PROCESS.
834 The returned value is one of the following symbols:
835 run -- for a process that is running.
836 stop -- for a process stopped but continuable.
837 exit -- for a process that has exited.
838 signal -- for a process that has got a fatal signal.
839 open -- for a network stream connection that is open.
840 listen -- for a network stream server that is listening.
841 closed -- for a network stream connection that is closed.
842 connect -- when waiting for a non-blocking connection to complete.
843 failed -- when a non-blocking connection has failed.
844 nil -- if arg is a process name and no such process exists.
845 PROCESS may be a process, a buffer, the name of a process, or
846 nil, indicating the current buffer's process. */)
848 register Lisp_Object process
;
850 register struct Lisp_Process
*p
;
851 register Lisp_Object status
;
853 if (STRINGP (process
))
854 process
= Fget_process (process
);
856 process
= get_process (process
);
861 p
= XPROCESS (process
);
862 if (p
->raw_status_new
)
866 status
= XCAR (status
);
867 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
869 if (EQ (status
, Qexit
))
871 else if (EQ (p
->command
, Qt
))
873 else if (EQ (status
, Qrun
))
879 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
881 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
882 If PROCESS has not yet exited or died, return 0. */)
884 register Lisp_Object process
;
886 CHECK_PROCESS (process
);
887 if (XPROCESS (process
)->raw_status_new
)
888 update_status (XPROCESS (process
));
889 if (CONSP (XPROCESS (process
)->status
))
890 return XCAR (XCDR (XPROCESS (process
)->status
));
891 return make_number (0);
894 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
895 doc
: /* Return the process id of PROCESS.
896 This is the pid of the external process which PROCESS uses or talks to.
897 For a network connection, this value is nil. */)
899 register Lisp_Object process
;
901 /* Assignment to EMACS_INT stops GCC whining about limited range of
905 CHECK_PROCESS (process
);
906 pid
= XPROCESS (process
)->pid
;
907 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
910 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
911 doc
: /* Return the name of PROCESS, as a string.
912 This is the name of the program invoked in PROCESS,
913 possibly modified to make it unique among process names. */)
915 register Lisp_Object process
;
917 CHECK_PROCESS (process
);
918 return XPROCESS (process
)->name
;
921 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
922 doc
: /* Return the command that was executed to start PROCESS.
923 This is a list of strings, the first string being the program executed
924 and the rest of the strings being the arguments given to it.
925 For a network or serial process, this is nil (process is running) or t
926 \(process is stopped). */)
928 register Lisp_Object process
;
930 CHECK_PROCESS (process
);
931 return XPROCESS (process
)->command
;
934 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
935 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
936 This is the terminal that the process itself reads and writes on,
937 not the name of the pty that Emacs uses to talk with that terminal. */)
939 register Lisp_Object process
;
941 CHECK_PROCESS (process
);
942 return XPROCESS (process
)->tty_name
;
945 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
947 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
949 register Lisp_Object process
, buffer
;
951 struct Lisp_Process
*p
;
953 CHECK_PROCESS (process
);
955 CHECK_BUFFER (buffer
);
956 p
= XPROCESS (process
);
958 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
959 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
960 setup_process_coding_systems (process
);
964 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
966 doc
: /* Return the buffer PROCESS is associated with.
967 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
969 register Lisp_Object process
;
971 CHECK_PROCESS (process
);
972 return XPROCESS (process
)->buffer
;
975 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
977 doc
: /* Return the marker for the end of the last output from PROCESS. */)
979 register Lisp_Object process
;
981 CHECK_PROCESS (process
);
982 return XPROCESS (process
)->mark
;
985 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
987 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
988 A value of t means stop accepting output from the process.
990 When a process has a filter, its buffer is not used for output.
991 Instead, each time it does output, the entire string of output is
992 passed to the filter.
994 The filter gets two arguments: the process and the string of output.
995 The string argument is normally a multibyte string, except:
996 - if the process' input coding system is no-conversion or raw-text,
997 it is a unibyte string (the non-converted input), or else
998 - if `default-enable-multibyte-characters' is nil, it is a unibyte
999 string (the result of converting the decoded input multibyte
1000 string to unibyte with `string-make-unibyte'). */)
1002 register Lisp_Object process
, filter
;
1004 struct Lisp_Process
*p
;
1006 CHECK_PROCESS (process
);
1007 p
= XPROCESS (process
);
1009 /* Don't signal an error if the process' input file descriptor
1010 is closed. This could make debugging Lisp more difficult,
1011 for example when doing something like
1013 (setq process (start-process ...))
1015 (set-process-filter process ...) */
1019 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1021 FD_CLR (p
->infd
, &input_wait_mask
);
1022 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1024 else if (EQ (p
->filter
, Qt
)
1025 /* Network or serial process not stopped: */
1026 && !EQ (p
->command
, Qt
))
1028 FD_SET (p
->infd
, &input_wait_mask
);
1029 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1034 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1035 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1036 setup_process_coding_systems (process
);
1040 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1042 doc
: /* Returns the filter function of PROCESS; nil if none.
1043 See `set-process-filter' for more info on filter functions. */)
1045 register Lisp_Object process
;
1047 CHECK_PROCESS (process
);
1048 return XPROCESS (process
)->filter
;
1051 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1053 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1054 The sentinel is called as a function when the process changes state.
1055 It gets two arguments: the process, and a string describing the change. */)
1057 register Lisp_Object process
, sentinel
;
1059 struct Lisp_Process
*p
;
1061 CHECK_PROCESS (process
);
1062 p
= XPROCESS (process
);
1064 p
->sentinel
= sentinel
;
1065 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1066 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1070 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1072 doc
: /* Return the sentinel of PROCESS; nil if none.
1073 See `set-process-sentinel' for more info on sentinels. */)
1075 register Lisp_Object process
;
1077 CHECK_PROCESS (process
);
1078 return XPROCESS (process
)->sentinel
;
1081 DEFUN ("set-process-window-size", Fset_process_window_size
,
1082 Sset_process_window_size
, 3, 3, 0,
1083 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1084 (process
, height
, width
)
1085 register Lisp_Object process
, height
, width
;
1087 CHECK_PROCESS (process
);
1088 CHECK_NATNUM (height
);
1089 CHECK_NATNUM (width
);
1091 if (XPROCESS (process
)->infd
< 0
1092 || set_window_size (XPROCESS (process
)->infd
,
1093 XINT (height
), XINT (width
)) <= 0)
1099 DEFUN ("set-process-inherit-coding-system-flag",
1100 Fset_process_inherit_coding_system_flag
,
1101 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1102 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1103 If the second argument FLAG is non-nil, then the variable
1104 `buffer-file-coding-system' of the buffer associated with PROCESS
1105 will be bound to the value of the coding system used to decode
1108 This is useful when the coding system specified for the process buffer
1109 leaves either the character code conversion or the end-of-line conversion
1110 unspecified, or if the coding system used to decode the process output
1111 is more appropriate for saving the process buffer.
1113 Binding the variable `inherit-process-coding-system' to non-nil before
1114 starting the process is an alternative way of setting the inherit flag
1115 for the process which will run. */)
1117 register Lisp_Object process
, flag
;
1119 CHECK_PROCESS (process
);
1120 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1124 DEFUN ("process-inherit-coding-system-flag",
1125 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1127 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1128 If this flag is t, `buffer-file-coding-system' of the buffer
1129 associated with PROCESS will inherit the coding system used to decode
1130 the process output. */)
1132 register Lisp_Object process
;
1134 CHECK_PROCESS (process
);
1135 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
1138 DEFUN ("set-process-query-on-exit-flag",
1139 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1141 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1142 If the second argument FLAG is non-nil, Emacs will query the user before
1143 exiting or killing a buffer if PROCESS is running. */)
1145 register Lisp_Object process
, flag
;
1147 CHECK_PROCESS (process
);
1148 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1152 DEFUN ("process-query-on-exit-flag",
1153 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1155 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1157 register Lisp_Object process
;
1159 CHECK_PROCESS (process
);
1160 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1163 #ifdef DATAGRAM_SOCKETS
1164 Lisp_Object
Fprocess_datagram_address ();
1167 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1169 doc
: /* Return the contact info of PROCESS; t for a real child.
1170 For a network or serial connection, the value depends on the optional
1171 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1172 SERVICE) for a network connection or (PORT SPEED) for a serial
1173 connection. If KEY is t, the complete contact information for the
1174 connection is returned, else the specific value for the keyword KEY is
1175 returned. See `make-network-process' or `make-serial-process' for a
1176 list of keywords. */)
1178 register Lisp_Object process
, key
;
1180 Lisp_Object contact
;
1182 CHECK_PROCESS (process
);
1183 contact
= XPROCESS (process
)->childp
;
1185 #ifdef DATAGRAM_SOCKETS
1186 if (DATAGRAM_CONN_P (process
)
1187 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1188 contact
= Fplist_put (contact
, QCremote
,
1189 Fprocess_datagram_address (process
));
1192 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1194 if (NILP (key
) && NETCONN_P (process
))
1195 return Fcons (Fplist_get (contact
, QChost
),
1196 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1197 if (NILP (key
) && SERIALCONN_P (process
))
1198 return Fcons (Fplist_get (contact
, QCport
),
1199 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1200 return Fplist_get (contact
, key
);
1203 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1205 doc
: /* Return the plist of PROCESS. */)
1207 register Lisp_Object process
;
1209 CHECK_PROCESS (process
);
1210 return XPROCESS (process
)->plist
;
1213 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1215 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1217 register Lisp_Object process
, plist
;
1219 CHECK_PROCESS (process
);
1222 XPROCESS (process
)->plist
= plist
;
1226 #if 0 /* Turned off because we don't currently record this info
1227 in the process. Perhaps add it. */
1228 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1229 doc
: /* Return the connection type of PROCESS.
1230 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1231 a socket connection. */)
1233 Lisp_Object process
;
1235 return XPROCESS (process
)->type
;
1239 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1240 doc
: /* Return the connection type of PROCESS.
1241 The value is either the symbol `real', `network', or `serial'.
1242 PROCESS may be a process, a buffer, the name of a process or buffer, or
1243 nil, indicating the current buffer's process. */)
1245 Lisp_Object process
;
1248 proc
= get_process (process
);
1249 return XPROCESS (proc
)->type
;
1253 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1255 doc
: /* Convert network ADDRESS from internal format to a string.
1256 A 4 or 5 element vector represents an IPv4 address (with port number).
1257 An 8 or 9 element vector represents an IPv6 address (with port number).
1258 If optional second argument OMIT-PORT is non-nil, don't include a port
1259 number in the string, even when present in ADDRESS.
1260 Returns nil if format of ADDRESS is invalid. */)
1261 (address
, omit_port
)
1262 Lisp_Object address
, omit_port
;
1267 if (STRINGP (address
)) /* AF_LOCAL */
1270 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1272 register struct Lisp_Vector
*p
= XVECTOR (address
);
1273 Lisp_Object args
[10];
1276 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1278 args
[0] = build_string ("%d.%d.%d.%d");
1281 else if (p
->size
== 5)
1283 args
[0] = build_string ("%d.%d.%d.%d:%d");
1286 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1288 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1291 else if (p
->size
== 9)
1293 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1299 for (i
= 0; i
< nargs
; i
++)
1301 EMACS_INT element
= XINT (p
->contents
[i
]);
1303 if (element
< 0 || element
> 65535)
1306 if (nargs
<= 5 /* IPv4 */
1307 && i
< 4 /* host, not port */
1311 args
[i
+1] = p
->contents
[i
];
1314 return Fformat (nargs
+1, args
);
1317 if (CONSP (address
))
1319 Lisp_Object args
[2];
1320 args
[0] = build_string ("<Family %d>");
1321 args
[1] = Fcar (address
);
1322 return Fformat (2, args
);
1330 list_processes_1 (query_only
)
1331 Lisp_Object query_only
;
1333 register Lisp_Object tail
, tem
;
1334 Lisp_Object proc
, minspace
, tem1
;
1335 register struct Lisp_Process
*p
;
1337 int w_proc
, w_buffer
, w_tty
;
1339 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1341 w_proc
= 4; /* Proc */
1342 w_buffer
= 6; /* Buffer */
1343 w_tty
= 0; /* Omit if no ttys */
1345 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1349 proc
= Fcdr (XCAR (tail
));
1350 p
= XPROCESS (proc
);
1353 if (!NILP (query_only
) && p
->kill_without_query
)
1355 if (STRINGP (p
->name
)
1356 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1358 if (!NILP (p
->buffer
))
1360 if (NILP (XBUFFER (p
->buffer
)->name
))
1363 w_buffer
= 8; /* (Killed) */
1365 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1368 if (STRINGP (p
->tty_name
)
1369 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1373 XSETFASTINT (i_status
, w_proc
+ 1);
1374 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1377 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1378 XSETFASTINT (i_command
, XFASTINT (i_tty
) + w_tty
+ 1);
1383 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1386 XSETFASTINT (minspace
, 1);
1388 set_buffer_internal (XBUFFER (Vstandard_output
));
1389 current_buffer
->undo_list
= Qt
;
1391 current_buffer
->truncate_lines
= Qt
;
1393 write_string ("Proc", -1);
1394 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1395 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1398 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1400 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1401 write_string ("\n", -1);
1403 write_string ("----", -1);
1404 Findent_to (i_status
, minspace
); write_string ("------", -1);
1405 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1408 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1410 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1411 write_string ("\n", -1);
1413 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1417 proc
= Fcdr (XCAR (tail
));
1418 p
= XPROCESS (proc
);
1421 if (!NILP (query_only
) && p
->kill_without_query
)
1424 Finsert (1, &p
->name
);
1425 Findent_to (i_status
, minspace
);
1427 if (p
->raw_status_new
)
1430 if (CONSP (p
->status
))
1431 symbol
= XCAR (p
->status
);
1433 if (EQ (symbol
, Qsignal
))
1436 tem
= Fcar (Fcdr (p
->status
));
1437 Fprinc (symbol
, Qnil
);
1439 else if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1441 if (EQ (symbol
, Qexit
))
1442 write_string ("closed", -1);
1443 else if (EQ (p
->command
, Qt
))
1444 write_string ("stopped", -1);
1445 else if (EQ (symbol
, Qrun
))
1446 write_string ("open", -1);
1448 Fprinc (symbol
, Qnil
);
1450 else if (SERIALCONN1_P (p
))
1452 write_string ("running", -1);
1455 Fprinc (symbol
, Qnil
);
1457 if (EQ (symbol
, Qexit
))
1460 tem
= Fcar (Fcdr (p
->status
));
1463 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1464 write_string (tembuf
, -1);
1468 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1471 Findent_to (i_buffer
, minspace
);
1472 if (NILP (p
->buffer
))
1473 insert_string ("(none)");
1474 else if (NILP (XBUFFER (p
->buffer
)->name
))
1475 insert_string ("(Killed)");
1477 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1481 Findent_to (i_tty
, minspace
);
1482 if (STRINGP (p
->tty_name
))
1483 Finsert (1, &p
->tty_name
);
1486 Findent_to (i_command
, minspace
);
1488 if (EQ (p
->status
, Qlisten
))
1490 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1491 if (INTEGERP (port
))
1492 port
= Fnumber_to_string (port
);
1494 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1495 sprintf (tembuf
, "(network %s server on %s)\n",
1496 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1497 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1498 insert_string (tembuf
);
1500 else if (NETCONN1_P (p
))
1502 /* For a local socket, there is no host name,
1503 so display service instead. */
1504 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1505 if (!STRINGP (host
))
1507 host
= Fplist_get (p
->childp
, QCservice
);
1508 if (INTEGERP (host
))
1509 host
= Fnumber_to_string (host
);
1512 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1513 sprintf (tembuf
, "(network %s connection to %s)\n",
1514 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1515 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1516 insert_string (tembuf
);
1518 else if (SERIALCONN1_P (p
))
1520 Lisp_Object port
= Fplist_get (p
->childp
, QCport
);
1521 Lisp_Object speed
= Fplist_get (p
->childp
, QCspeed
);
1522 insert_string ("(serial port ");
1524 insert_string (SDATA (port
));
1526 insert_string ("?");
1527 if (INTEGERP (speed
))
1529 sprintf (tembuf
, " at %ld b/s", (long) XINT (speed
));
1530 insert_string (tembuf
);
1532 insert_string (")\n");
1546 insert_string (" ");
1548 insert_string ("\n");
1553 status_notify (NULL
);
1554 redisplay_preserve_echo_area (13);
1559 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1560 doc
: /* Display a list of all processes.
1561 If optional argument QUERY-ONLY is non-nil, only processes with
1562 the query-on-exit flag set will be listed.
1563 Any process listed as exited or signaled is actually eliminated
1564 after the listing is made. */)
1566 Lisp_Object query_only
;
1568 internal_with_output_to_temp_buffer ("*Process List*",
1569 list_processes_1
, query_only
);
1573 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1574 doc
: /* Return a list of all processes. */)
1577 return Fmapcar (Qcdr
, Vprocess_alist
);
1580 /* Starting asynchronous inferior processes. */
1582 static Lisp_Object
start_process_unwind ();
1584 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1585 doc
: /* Start a program in a subprocess. Return the process object for it.
1586 NAME is name for process. It is modified if necessary to make it unique.
1587 BUFFER is the buffer (or buffer name) to associate with the process.
1589 Process output (both standard output and standard error streams) goes
1590 at end of BUFFER, unless you specify an output stream or filter
1591 function to handle the output. BUFFER may also be nil, meaning that
1592 this process is not associated with any buffer.
1594 PROGRAM is the program file name. It is searched for in PATH. If
1595 nil, just associate a pty with the buffer. Remaining arguments are
1596 strings to give program as arguments.
1598 If you want to separate standard output from standard error, invoke
1599 the command through a shell and redirect one of them using the shell
1602 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1605 register Lisp_Object
*args
;
1607 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1608 register unsigned char **new_argv
;
1610 int count
= SPECPDL_INDEX ();
1614 buffer
= Fget_buffer_create (buffer
);
1616 /* Make sure that the child will be able to chdir to the current
1617 buffer's current directory, or its unhandled equivalent. We
1618 can't just have the child check for an error when it does the
1619 chdir, since it's in a vfork.
1621 We have to GCPRO around this because Fexpand_file_name and
1622 Funhandled_file_name_directory might call a file name handling
1623 function. The argument list is protected by the caller, so all
1624 we really have to worry about is buffer. */
1626 struct gcpro gcpro1
, gcpro2
;
1628 current_dir
= current_buffer
->directory
;
1630 GCPRO2 (buffer
, current_dir
);
1632 current_dir
= Funhandled_file_name_directory (current_dir
);
1633 if (NILP (current_dir
))
1634 /* If the file name handler says that current_dir is unreachable, use
1635 a sensible default. */
1636 current_dir
= build_string ("~/");
1637 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1638 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1639 report_file_error ("Setting current directory",
1640 Fcons (current_buffer
->directory
, Qnil
));
1646 CHECK_STRING (name
);
1650 if (!NILP (program
))
1651 CHECK_STRING (program
);
1653 proc
= make_process (name
);
1654 /* If an error occurs and we can't start the process, we want to
1655 remove it from the process list. This means that each error
1656 check in create_process doesn't need to call remove_process
1657 itself; it's all taken care of here. */
1658 record_unwind_protect (start_process_unwind
, proc
);
1660 XPROCESS (proc
)->childp
= Qt
;
1661 XPROCESS (proc
)->plist
= Qnil
;
1662 XPROCESS (proc
)->type
= Qreal
;
1663 XPROCESS (proc
)->buffer
= buffer
;
1664 XPROCESS (proc
)->sentinel
= Qnil
;
1665 XPROCESS (proc
)->filter
= Qnil
;
1666 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1668 #ifdef ADAPTIVE_READ_BUFFERING
1669 XPROCESS (proc
)->adaptive_read_buffering
1670 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1671 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1674 /* Make the process marker point into the process buffer (if any). */
1675 if (BUFFERP (buffer
))
1676 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1677 BUF_ZV (XBUFFER (buffer
)),
1678 BUF_ZV_BYTE (XBUFFER (buffer
)));
1681 /* Decide coding systems for communicating with the process. Here
1682 we don't setup the structure coding_system nor pay attention to
1683 unibyte mode. They are done in create_process. */
1685 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1686 Lisp_Object coding_systems
= Qt
;
1687 Lisp_Object val
, *args2
;
1688 struct gcpro gcpro1
, gcpro2
;
1690 val
= Vcoding_system_for_read
;
1693 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1694 args2
[0] = Qstart_process
;
1695 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1696 GCPRO2 (proc
, current_dir
);
1697 if (!NILP (program
))
1698 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1700 if (CONSP (coding_systems
))
1701 val
= XCAR (coding_systems
);
1702 else if (CONSP (Vdefault_process_coding_system
))
1703 val
= XCAR (Vdefault_process_coding_system
);
1705 XPROCESS (proc
)->decode_coding_system
= val
;
1707 val
= Vcoding_system_for_write
;
1710 if (EQ (coding_systems
, Qt
))
1712 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1713 args2
[0] = Qstart_process
;
1714 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1715 GCPRO2 (proc
, current_dir
);
1716 if (!NILP (program
))
1717 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1720 if (CONSP (coding_systems
))
1721 val
= XCDR (coding_systems
);
1722 else if (CONSP (Vdefault_process_coding_system
))
1723 val
= XCDR (Vdefault_process_coding_system
);
1725 XPROCESS (proc
)->encode_coding_system
= val
;
1729 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1730 XPROCESS (proc
)->decoding_carryover
= 0;
1731 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1733 XPROCESS (proc
)->inherit_coding_system_flag
1734 = !(NILP (buffer
) || !inherit_process_coding_system
);
1736 if (!NILP (program
))
1738 /* If program file name is not absolute, search our path for it.
1739 Put the name we will really use in TEM. */
1740 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1741 && !(SCHARS (program
) > 1
1742 && IS_DEVICE_SEP (SREF (program
, 1))))
1744 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1747 GCPRO4 (name
, program
, buffer
, current_dir
);
1748 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1751 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1752 tem
= Fexpand_file_name (tem
, Qnil
);
1756 if (!NILP (Ffile_directory_p (program
)))
1757 error ("Specified program for new process is a directory");
1761 /* If program file name starts with /: for quoting a magic name,
1763 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1764 && SREF (tem
, 1) == ':')
1765 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1768 struct gcpro gcpro1
;
1771 /* Encode the file name and put it in NEW_ARGV.
1772 That's where the child will use it to execute the program. */
1773 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1775 /* Here we encode arguments by the coding system used for sending
1776 data to the process. We don't support using different coding
1777 systems for encoding arguments and for encoding data sent to the
1780 for (i
= 3; i
< nargs
; i
++)
1782 tem
= Fcons (args
[i
], tem
);
1783 CHECK_STRING (XCAR (tem
));
1784 if (STRING_MULTIBYTE (XCAR (tem
)))
1786 code_convert_string_norecord
1787 (XCAR (tem
), XPROCESS (proc
)->encode_coding_system
, 1));
1793 /* Now that everything is encoded we can collect the strings into
1795 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1796 new_argv
[nargs
- 2] = 0;
1798 for (i
= nargs
- 3; i
>= 0; i
--)
1800 new_argv
[i
] = SDATA (XCAR (tem
));
1804 create_process (proc
, (char **) new_argv
, current_dir
);
1809 return unbind_to (count
, proc
);
1812 /* This function is the unwind_protect form for Fstart_process. If
1813 PROC doesn't have its pid set, then we know someone has signaled
1814 an error and the process wasn't started successfully, so we should
1815 remove it from the process list. */
1817 start_process_unwind (proc
)
1820 if (!PROCESSP (proc
))
1823 /* Was PROC started successfully? */
1824 if (XPROCESS (proc
)->pid
== -1)
1825 remove_process (proc
);
1831 create_process_1 (timer
)
1832 struct atimer
*timer
;
1834 /* Nothing to do. */
1838 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1841 /* Mimic blocking of signals on system V, which doesn't really have it. */
1843 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1844 int sigchld_deferred
;
1847 create_process_sigchld ()
1849 signal (SIGCHLD
, create_process_sigchld
);
1851 sigchld_deferred
= 1;
1858 create_process (process
, new_argv
, current_dir
)
1859 Lisp_Object process
;
1861 Lisp_Object current_dir
;
1863 int inchannel
, outchannel
;
1866 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1867 int wait_child_setup
[2];
1871 struct sigaction sigint_action
;
1872 struct sigaction sigquit_action
;
1874 struct sigaction sighup_action
;
1876 /* Use volatile to protect variables from being clobbered by longjmp. */
1877 volatile int forkin
, forkout
;
1878 volatile int pty_flag
= 0;
1880 extern char **environ
;
1883 inchannel
= outchannel
= -1;
1886 if (!NILP (Vprocess_connection_type
))
1887 outchannel
= inchannel
= allocate_pty ();
1891 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1892 /* On most USG systems it does not work to open the pty's tty here,
1893 then close it and reopen it in the child. */
1895 /* Don't let this terminal become our controlling terminal
1896 (in case we don't have one). */
1897 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1899 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1902 report_file_error ("Opening pty", Qnil
);
1904 forkin
= forkout
= -1;
1905 #endif /* not USG, or USG_SUBTTY_WORKS */
1909 #endif /* HAVE_PTYS */
1914 report_file_error ("Creating pipe", Qnil
);
1920 emacs_close (inchannel
);
1921 emacs_close (forkout
);
1922 report_file_error ("Creating pipe", Qnil
);
1928 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1932 tem
= pipe (wait_child_setup
);
1934 report_file_error ("Creating pipe", Qnil
);
1935 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1937 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1940 emacs_close (wait_child_setup
[0]);
1941 emacs_close (wait_child_setup
[1]);
1942 report_file_error ("Setting file descriptor flags", Qnil
);
1948 /* Replaced by close_process_descs */
1949 set_exclusive_use (inchannel
);
1950 set_exclusive_use (outchannel
);
1954 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1955 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1958 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1959 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1963 /* Record this as an active process, with its channels.
1964 As a result, child_setup will close Emacs's side of the pipes. */
1965 chan_process
[inchannel
] = process
;
1966 XPROCESS (process
)->infd
= inchannel
;
1967 XPROCESS (process
)->outfd
= outchannel
;
1969 /* Previously we recorded the tty descriptor used in the subprocess.
1970 It was only used for getting the foreground tty process, so now
1971 we just reopen the device (see emacs_get_tty_pgrp) as this is
1972 more portable (see USG_SUBTTY_WORKS above). */
1974 XPROCESS (process
)->pty_flag
= pty_flag
;
1975 XPROCESS (process
)->status
= Qrun
;
1976 setup_process_coding_systems (process
);
1978 /* Delay interrupts until we have a chance to store
1979 the new fork's pid in its process structure */
1980 sigemptyset (&blocked
);
1982 sigaddset (&blocked
, SIGCHLD
);
1984 #ifdef HAVE_WORKING_VFORK
1985 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1986 this sets the parent's signal handlers as well as the child's.
1987 So delay all interrupts whose handlers the child might munge,
1988 and record the current handlers so they can be restored later. */
1989 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1990 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1992 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1994 #endif /* HAVE_WORKING_VFORK */
1995 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1997 FD_SET (inchannel
, &input_wait_mask
);
1998 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1999 if (inchannel
> max_process_desc
)
2000 max_process_desc
= inchannel
;
2002 /* Until we store the proper pid, enable sigchld_handler
2003 to recognize an unknown pid as standing for this process.
2004 It is very important not to let this `marker' value stay
2005 in the table after this function has returned; if it does
2006 it might cause call-process to hang and subsequent asynchronous
2007 processes to get their return values scrambled. */
2008 XPROCESS (process
)->pid
= -1;
2013 /* child_setup must clobber environ on systems with true vfork.
2014 Protect it from permanent change. */
2015 char **save_environ
= environ
;
2017 current_dir
= ENCODE_FILE (current_dir
);
2022 #endif /* not WINDOWSNT */
2024 int xforkin
= forkin
;
2025 int xforkout
= forkout
;
2027 #if 0 /* This was probably a mistake--it duplicates code later on,
2028 but fails to handle all the cases. */
2029 /* Make sure SIGCHLD is not blocked in the child. */
2030 sigsetmask (SIGEMPTYMASK
);
2033 /* Make the pty be the controlling terminal of the process. */
2035 /* First, disconnect its current controlling terminal. */
2037 /* We tried doing setsid only if pty_flag, but it caused
2038 process_set_signal to fail on SGI when using a pipe. */
2040 /* Make the pty's terminal the controlling terminal. */
2044 /* We ignore the return value
2045 because faith@cs.unc.edu says that is necessary on Linux. */
2046 ioctl (xforkin
, TIOCSCTTY
, 0);
2049 #else /* not HAVE_SETSID */
2051 /* It's very important to call setpgrp here and no time
2052 afterwards. Otherwise, we lose our controlling tty which
2053 is set when we open the pty. */
2056 #endif /* not HAVE_SETSID */
2057 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2058 if (pty_flag
&& xforkin
>= 0)
2061 tcgetattr (xforkin
, &t
);
2063 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2064 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2067 #if defined (NTTYDISC) && defined (TIOCSETD)
2068 if (pty_flag
&& xforkin
>= 0)
2070 /* Use new line discipline. */
2071 int ldisc
= NTTYDISC
;
2072 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2077 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2078 can do TIOCSPGRP only to the process's controlling tty. */
2081 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2082 I can't test it since I don't have 4.3. */
2083 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2084 ioctl (j
, TIOCNOTTY
, 0);
2087 /* In order to get a controlling terminal on some versions
2088 of BSD, it is necessary to put the process in pgrp 0
2089 before it opens the terminal. */
2097 #endif /* TIOCNOTTY */
2099 #if !defined (DONT_REOPEN_PTY)
2100 /*** There is a suggestion that this ought to be a
2101 conditional on TIOCSPGRP,
2102 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2103 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2104 that system does seem to need this code, even though
2105 both HAVE_SETSID and TIOCSCTTY are defined. */
2106 /* Now close the pty (if we had it open) and reopen it.
2107 This makes the pty the controlling terminal of the subprocess. */
2111 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2114 emacs_close (xforkin
);
2115 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2119 emacs_write (1, "Couldn't open the pty terminal ", 31);
2120 emacs_write (1, pty_name
, strlen (pty_name
));
2121 emacs_write (1, "\n", 1);
2126 #endif /* not DONT_REOPEN_PTY */
2128 #ifdef SETUP_SLAVE_PTY
2133 #endif /* SETUP_SLAVE_PTY */
2135 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2136 Now reenable it in the child, so it will die when we want it to. */
2138 signal (SIGHUP
, SIG_DFL
);
2140 #endif /* HAVE_PTYS */
2142 signal (SIGINT
, SIG_DFL
);
2143 signal (SIGQUIT
, SIG_DFL
);
2145 /* Stop blocking signals in the child. */
2146 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2149 child_setup_tty (xforkout
);
2151 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2152 new_argv
, 1, current_dir
);
2153 #else /* not WINDOWSNT */
2155 emacs_close (wait_child_setup
[0]);
2157 child_setup (xforkin
, xforkout
, xforkout
,
2158 new_argv
, 1, current_dir
);
2159 #endif /* not WINDOWSNT */
2161 environ
= save_environ
;
2166 /* This runs in the Emacs process. */
2170 emacs_close (forkin
);
2171 if (forkin
!= forkout
&& forkout
>= 0)
2172 emacs_close (forkout
);
2176 /* vfork succeeded. */
2177 XPROCESS (process
)->pid
= pid
;
2180 register_child (pid
, inchannel
);
2181 #endif /* WINDOWSNT */
2183 /* If the subfork execv fails, and it exits,
2184 this close hangs. I don't know why.
2185 So have an interrupt jar it loose. */
2187 struct atimer
*timer
;
2191 EMACS_SET_SECS_USECS (offset
, 1, 0);
2192 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2195 emacs_close (forkin
);
2197 cancel_atimer (timer
);
2201 if (forkin
!= forkout
&& forkout
>= 0)
2202 emacs_close (forkout
);
2206 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2209 XPROCESS (process
)->tty_name
= Qnil
;
2211 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
2212 /* Wait for child_setup to complete in case that vfork is
2213 actually defined as fork. The descriptor wait_child_setup[1]
2214 of a pipe is closed at the child side either by close-on-exec
2215 on successful execvp or the _exit call in child_setup. */
2219 emacs_close (wait_child_setup
[1]);
2220 emacs_read (wait_child_setup
[0], &dummy
, 1);
2221 emacs_close (wait_child_setup
[0]);
2226 /* Restore the signal state whether vfork succeeded or not.
2227 (We will signal an error, below, if it failed.) */
2228 #ifdef HAVE_WORKING_VFORK
2229 /* Restore the parent's signal handlers. */
2230 sigaction (SIGINT
, &sigint_action
, 0);
2231 sigaction (SIGQUIT
, &sigquit_action
, 0);
2233 sigaction (SIGHUP
, &sighup_action
, 0);
2235 #endif /* HAVE_WORKING_VFORK */
2236 /* Stop blocking signals in the parent. */
2237 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2239 /* Now generate the error if vfork failed. */
2241 report_file_error ("Doing vfork", Qnil
);
2245 create_pty (process
)
2246 Lisp_Object process
;
2248 int inchannel
, outchannel
;
2250 /* Use volatile to protect variables from being clobbered by longjmp. */
2251 volatile int forkin
, forkout
;
2252 volatile int pty_flag
= 0;
2254 inchannel
= outchannel
= -1;
2257 if (!NILP (Vprocess_connection_type
))
2258 outchannel
= inchannel
= allocate_pty ();
2262 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2263 /* On most USG systems it does not work to open the pty's tty here,
2264 then close it and reopen it in the child. */
2266 /* Don't let this terminal become our controlling terminal
2267 (in case we don't have one). */
2268 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2270 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
2273 report_file_error ("Opening pty", Qnil
);
2274 #if defined (DONT_REOPEN_PTY)
2275 /* In the case that vfork is defined as fork, the parent process
2276 (Emacs) may send some data before the child process completes
2277 tty options setup. So we setup tty before forking. */
2278 child_setup_tty (forkout
);
2279 #endif /* DONT_REOPEN_PTY */
2281 forkin
= forkout
= -1;
2282 #endif /* not USG, or USG_SUBTTY_WORKS */
2285 #endif /* HAVE_PTYS */
2288 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2289 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2292 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
2293 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
2297 /* Record this as an active process, with its channels.
2298 As a result, child_setup will close Emacs's side of the pipes. */
2299 chan_process
[inchannel
] = process
;
2300 XPROCESS (process
)->infd
= inchannel
;
2301 XPROCESS (process
)->outfd
= outchannel
;
2303 /* Previously we recorded the tty descriptor used in the subprocess.
2304 It was only used for getting the foreground tty process, so now
2305 we just reopen the device (see emacs_get_tty_pgrp) as this is
2306 more portable (see USG_SUBTTY_WORKS above). */
2308 XPROCESS (process
)->pty_flag
= pty_flag
;
2309 XPROCESS (process
)->status
= Qrun
;
2310 setup_process_coding_systems (process
);
2312 FD_SET (inchannel
, &input_wait_mask
);
2313 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2314 if (inchannel
> max_process_desc
)
2315 max_process_desc
= inchannel
;
2317 XPROCESS (process
)->pid
= -2;
2320 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2323 XPROCESS (process
)->tty_name
= Qnil
;
2329 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2330 The address family of sa is not included in the result. */
2333 conv_sockaddr_to_lisp (sa
, len
)
2334 struct sockaddr
*sa
;
2337 Lisp_Object address
;
2340 register struct Lisp_Vector
*p
;
2342 /* Workaround for a bug in getsockname on BSD: Names bound to
2343 sockets in the UNIX domain are inaccessible; getsockname returns
2344 a zero length name. */
2345 if (len
< OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2346 return empty_unibyte_string
;
2348 switch (sa
->sa_family
)
2352 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2353 len
= sizeof (sin
->sin_addr
) + 1;
2354 address
= Fmake_vector (make_number (len
), Qnil
);
2355 p
= XVECTOR (address
);
2356 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2357 cp
= (unsigned char *) &sin
->sin_addr
;
2363 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2364 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2365 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2366 address
= Fmake_vector (make_number (len
), Qnil
);
2367 p
= XVECTOR (address
);
2368 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2369 for (i
= 0; i
< len
; i
++)
2370 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2374 #ifdef HAVE_LOCAL_SOCKETS
2377 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2378 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2379 if (sockun
->sun_path
[i
] == 0)
2381 return make_unibyte_string (sockun
->sun_path
, i
);
2385 len
-= OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2386 address
= Fcons (make_number (sa
->sa_family
),
2387 Fmake_vector (make_number (len
), Qnil
));
2388 p
= XVECTOR (XCDR (address
));
2389 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2395 p
->contents
[i
++] = make_number (*cp
++);
2401 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2404 get_lisp_to_sockaddr_size (address
, familyp
)
2405 Lisp_Object address
;
2408 register struct Lisp_Vector
*p
;
2410 if (VECTORP (address
))
2412 p
= XVECTOR (address
);
2416 return sizeof (struct sockaddr_in
);
2419 else if (p
->size
== 9)
2421 *familyp
= AF_INET6
;
2422 return sizeof (struct sockaddr_in6
);
2426 #ifdef HAVE_LOCAL_SOCKETS
2427 else if (STRINGP (address
))
2429 *familyp
= AF_LOCAL
;
2430 return sizeof (struct sockaddr_un
);
2433 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2435 struct sockaddr
*sa
;
2436 *familyp
= XINT (XCAR (address
));
2437 p
= XVECTOR (XCDR (address
));
2438 return p
->size
+ sizeof (sa
->sa_family
);
2443 /* Convert an address object (vector or string) to an internal sockaddr.
2445 The address format has been basically validated by
2446 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2447 it could have come from user data. So if FAMILY is not valid,
2448 we return after zeroing *SA. */
2451 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2453 Lisp_Object address
;
2454 struct sockaddr
*sa
;
2457 register struct Lisp_Vector
*p
;
2458 register unsigned char *cp
= NULL
;
2463 if (VECTORP (address
))
2465 p
= XVECTOR (address
);
2466 if (family
== AF_INET
)
2468 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2469 len
= sizeof (sin
->sin_addr
) + 1;
2470 i
= XINT (p
->contents
[--len
]);
2471 sin
->sin_port
= htons (i
);
2472 cp
= (unsigned char *)&sin
->sin_addr
;
2473 sa
->sa_family
= family
;
2476 else if (family
== AF_INET6
)
2478 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2479 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2480 len
= sizeof (sin6
->sin6_addr
) + 1;
2481 i
= XINT (p
->contents
[--len
]);
2482 sin6
->sin6_port
= htons (i
);
2483 for (i
= 0; i
< len
; i
++)
2484 if (INTEGERP (p
->contents
[i
]))
2486 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2489 sa
->sa_family
= family
;
2494 else if (STRINGP (address
))
2496 #ifdef HAVE_LOCAL_SOCKETS
2497 if (family
== AF_LOCAL
)
2499 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2500 cp
= SDATA (address
);
2501 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2502 sockun
->sun_path
[i
] = *cp
++;
2503 sa
->sa_family
= family
;
2510 p
= XVECTOR (XCDR (address
));
2511 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2514 for (i
= 0; i
< len
; i
++)
2515 if (INTEGERP (p
->contents
[i
]))
2516 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2519 #ifdef DATAGRAM_SOCKETS
2520 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2522 doc
: /* Get the current datagram address associated with PROCESS. */)
2524 Lisp_Object process
;
2528 CHECK_PROCESS (process
);
2530 if (!DATAGRAM_CONN_P (process
))
2533 channel
= XPROCESS (process
)->infd
;
2534 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2535 datagram_address
[channel
].len
);
2538 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2540 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2541 Returns nil upon error setting address, ADDRESS otherwise. */)
2543 Lisp_Object process
, address
;
2548 CHECK_PROCESS (process
);
2550 if (!DATAGRAM_CONN_P (process
))
2553 channel
= XPROCESS (process
)->infd
;
2555 len
= get_lisp_to_sockaddr_size (address
, &family
);
2556 if (datagram_address
[channel
].len
!= len
)
2558 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2564 static const struct socket_options
{
2565 /* The name of this option. Should be lowercase version of option
2566 name without SO_ prefix. */
2568 /* Option level SOL_... */
2570 /* Option number SO_... */
2572 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2573 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2574 } socket_options
[] =
2576 #ifdef SO_BINDTODEVICE
2577 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2580 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2583 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2586 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2589 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2592 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2595 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2598 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2600 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2603 /* Set option OPT to value VAL on socket S.
2605 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2606 Signals an error if setting a known option fails.
2610 set_socket_option (s
, opt
, val
)
2612 Lisp_Object opt
, val
;
2615 const struct socket_options
*sopt
;
2620 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2621 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2622 if (strcmp (name
, sopt
->name
) == 0)
2625 switch (sopt
->opttype
)
2630 optval
= NILP (val
) ? 0 : 1;
2631 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2632 &optval
, sizeof (optval
));
2640 optval
= XINT (val
);
2642 error ("Bad option value for %s", name
);
2643 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2644 &optval
, sizeof (optval
));
2648 #ifdef SO_BINDTODEVICE
2651 char devname
[IFNAMSIZ
+1];
2653 /* This is broken, at least in the Linux 2.4 kernel.
2654 To unbind, the arg must be a zero integer, not the empty string.
2655 This should work on all systems. KFS. 2003-09-23. */
2656 bzero (devname
, sizeof devname
);
2659 char *arg
= (char *) SDATA (val
);
2660 int len
= min (strlen (arg
), IFNAMSIZ
);
2661 bcopy (arg
, devname
, len
);
2663 else if (!NILP (val
))
2664 error ("Bad option value for %s", name
);
2665 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2674 struct linger linger
;
2677 linger
.l_linger
= 0;
2679 linger
.l_linger
= XINT (val
);
2681 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2682 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2683 &linger
, sizeof (linger
));
2693 report_file_error ("Cannot set network option",
2694 Fcons (opt
, Fcons (val
, Qnil
)));
2695 return (1 << sopt
->optbit
);
2699 DEFUN ("set-network-process-option",
2700 Fset_network_process_option
, Sset_network_process_option
,
2702 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2703 See `make-network-process' for a list of options and values.
2704 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2705 OPTION is not a supported option, return nil instead; otherwise return t. */)
2706 (process
, option
, value
, no_error
)
2707 Lisp_Object process
, option
, value
;
2708 Lisp_Object no_error
;
2711 struct Lisp_Process
*p
;
2713 CHECK_PROCESS (process
);
2714 p
= XPROCESS (process
);
2715 if (!NETCONN1_P (p
))
2716 error ("Process is not a network process");
2720 error ("Process is not running");
2722 if (set_socket_option (s
, option
, value
))
2724 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2728 if (NILP (no_error
))
2729 error ("Unknown or unsupported option");
2736 DEFUN ("serial-process-configure",
2737 Fserial_process_configure
,
2738 Sserial_process_configure
,
2740 doc
: /* Configure speed, bytesize, etc. of a serial process.
2742 Arguments are specified as keyword/argument pairs. Attributes that
2743 are not given are re-initialized from the process's current
2744 configuration (available via the function `process-contact') or set to
2745 reasonable default values. The following arguments are defined:
2751 -- Any of these arguments can be given to identify the process that is
2752 to be configured. If none of these arguments is given, the current
2753 buffer's process is used.
2755 :speed SPEED -- SPEED is the speed of the serial port in bits per
2756 second, also called baud rate. Any value can be given for SPEED, but
2757 most serial ports work only at a few defined values between 1200 and
2758 115200, with 9600 being the most common value. If SPEED is nil, the
2759 serial port is not configured any further, i.e., all other arguments
2760 are ignored. This may be useful for special serial ports such as
2761 Bluetooth-to-serial converters which can only be configured through AT
2762 commands. A value of nil for SPEED can be used only when passed
2763 through `make-serial-process' or `serial-term'.
2765 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2766 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2768 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2769 `odd' (use odd parity), or the symbol `even' (use even parity). If
2770 PARITY is not given, no parity is used.
2772 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2773 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2774 is not given or nil, 1 stopbit is used.
2776 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2777 flowcontrol to be used, which is either nil (don't use flowcontrol),
2778 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2779 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2780 flowcontrol is used.
2782 `serial-process-configure' is called by `make-serial-process' for the
2783 initial configuration of the serial port.
2787 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2789 \(serial-process-configure
2790 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2792 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2794 usage: (serial-process-configure &rest ARGS) */)
2799 struct Lisp_Process
*p
;
2800 Lisp_Object contact
= Qnil
;
2801 Lisp_Object proc
= Qnil
;
2802 struct gcpro gcpro1
;
2804 contact
= Flist (nargs
, args
);
2807 proc
= Fplist_get (contact
, QCprocess
);
2809 proc
= Fplist_get (contact
, QCname
);
2811 proc
= Fplist_get (contact
, QCbuffer
);
2813 proc
= Fplist_get (contact
, QCport
);
2814 proc
= get_process (proc
);
2815 p
= XPROCESS (proc
);
2816 if (!EQ (p
->type
, Qserial
))
2817 error ("Not a serial process");
2819 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2825 serial_configure (p
, contact
);
2831 /* Used by make-serial-process to recover from errors. */
2832 Lisp_Object
make_serial_process_unwind (Lisp_Object proc
)
2834 if (!PROCESSP (proc
))
2836 remove_process (proc
);
2840 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2842 doc
: /* Create and return a serial port process.
2844 In Emacs, serial port connections are represented by process objects,
2845 so input and output work as for subprocesses, and `delete-process'
2846 closes a serial port connection. However, a serial process has no
2847 process id, it cannot be signaled, and the status codes are different
2848 from normal processes.
2850 `make-serial-process' creates a process and a buffer, on which you
2851 probably want to use `process-send-string'. Try \\[serial-term] for
2852 an interactive terminal. See below for examples.
2854 Arguments are specified as keyword/argument pairs. The following
2855 arguments are defined:
2857 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2858 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2859 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2860 the backslashes in strings).
2862 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2863 which is called by `make-serial-process'.
2865 :name NAME -- NAME is the name of the process. If NAME is not given,
2866 the value of PORT is used.
2868 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2869 with the process. Process output goes at the end of that buffer,
2870 unless you specify an output stream or filter function to handle the
2871 output. If BUFFER is not given, the value of NAME is used.
2873 :coding CODING -- If CODING is a symbol, it specifies the coding
2874 system used for both reading and writing for this process. If CODING
2875 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2876 ENCODING is used for writing.
2878 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2879 the process is running. If BOOL is not given, query before exiting.
2881 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2882 In the stopped state, a serial process does not accept incoming data,
2883 but you can send outgoing data. The stopped state is cleared by
2884 `continue-process' and set by `stop-process'.
2886 :filter FILTER -- Install FILTER as the process filter.
2888 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2890 :plist PLIST -- Install PLIST as the initial plist of the process.
2897 -- These arguments are handled by `serial-process-configure', which is
2898 called by `make-serial-process'.
2900 The original argument list, possibly modified by later configuration,
2901 is available via the function `process-contact'.
2905 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2907 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2909 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2911 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2913 usage: (make-serial-process &rest ARGS) */)
2919 Lisp_Object proc
, contact
, port
;
2920 struct Lisp_Process
*p
;
2921 struct gcpro gcpro1
;
2922 Lisp_Object name
, buffer
;
2923 Lisp_Object tem
, val
;
2924 int specpdl_count
= -1;
2929 contact
= Flist (nargs
, args
);
2932 port
= Fplist_get (contact
, QCport
);
2934 error ("No port specified");
2935 CHECK_STRING (port
);
2937 if (NILP (Fplist_member (contact
, QCspeed
)))
2938 error (":speed not specified");
2939 if (!NILP (Fplist_get (contact
, QCspeed
)))
2940 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2942 name
= Fplist_get (contact
, QCname
);
2945 CHECK_STRING (name
);
2946 proc
= make_process (name
);
2947 specpdl_count
= SPECPDL_INDEX ();
2948 record_unwind_protect (make_serial_process_unwind
, proc
);
2949 p
= XPROCESS (proc
);
2951 fd
= serial_open ((char*) SDATA (port
));
2954 if (fd
> max_process_desc
)
2955 max_process_desc
= fd
;
2956 chan_process
[fd
] = proc
;
2958 buffer
= Fplist_get (contact
, QCbuffer
);
2961 buffer
= Fget_buffer_create (buffer
);
2964 p
->childp
= contact
;
2965 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
2967 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
2968 p
->filter
= Fplist_get (contact
, QCfilter
);
2970 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
2971 p
->kill_without_query
= 1;
2972 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
2976 if (!EQ (p
->command
, Qt
))
2978 FD_SET (fd
, &input_wait_mask
);
2979 FD_SET (fd
, &non_keyboard_wait_mask
);
2982 if (BUFFERP (buffer
))
2984 set_marker_both (p
->mark
, buffer
,
2985 BUF_ZV (XBUFFER (buffer
)),
2986 BUF_ZV_BYTE (XBUFFER (buffer
)));
2989 tem
= Fplist_member (contact
, QCcoding
);
2990 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
2996 val
= XCAR (XCDR (tem
));
3000 else if (!NILP (Vcoding_system_for_read
))
3001 val
= Vcoding_system_for_read
;
3002 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3003 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3005 p
->decode_coding_system
= val
;
3010 val
= XCAR (XCDR (tem
));
3014 else if (!NILP (Vcoding_system_for_write
))
3015 val
= Vcoding_system_for_write
;
3016 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3017 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3019 p
->encode_coding_system
= val
;
3021 setup_process_coding_systems (proc
);
3022 p
->decoding_buf
= make_uninit_string (0);
3023 p
->decoding_carryover
= 0;
3024 p
->encoding_buf
= make_uninit_string (0);
3025 p
->inherit_coding_system_flag
3026 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3028 Fserial_process_configure(nargs
, args
);
3030 specpdl_ptr
= specpdl
+ specpdl_count
;
3035 #endif /* HAVE_SERIAL */
3037 /* Create a network stream/datagram client/server process. Treated
3038 exactly like a normal process when reading and writing. Primary
3039 differences are in status display and process deletion. A network
3040 connection has no PID; you cannot signal it. All you can do is
3041 stop/continue it and deactivate/close it via delete-process */
3043 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3045 doc
: /* Create and return a network server or client process.
3047 In Emacs, network connections are represented by process objects, so
3048 input and output work as for subprocesses and `delete-process' closes
3049 a network connection. However, a network process has no process id,
3050 it cannot be signaled, and the status codes are different from normal
3053 Arguments are specified as keyword/argument pairs. The following
3054 arguments are defined:
3056 :name NAME -- NAME is name for process. It is modified if necessary
3059 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3060 with the process. Process output goes at end of that buffer, unless
3061 you specify an output stream or filter function to handle the output.
3062 BUFFER may be also nil, meaning that this process is not associated
3065 :host HOST -- HOST is name of the host to connect to, or its IP
3066 address. The symbol `local' specifies the local host. If specified
3067 for a server process, it must be a valid name or address for the local
3068 host, and only clients connecting to that address will be accepted.
3070 :service SERVICE -- SERVICE is name of the service desired, or an
3071 integer specifying a port number to connect to. If SERVICE is t,
3072 a random port number is selected for the server. (If Emacs was
3073 compiled with getaddrinfo, a port number can also be specified as a
3074 string, e.g. "80", as well as an integer. This is not portable.)
3076 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3077 stream type connection, `datagram' creates a datagram type connection,
3078 `seqpacket' creates a reliable datagram connection.
3080 :family FAMILY -- FAMILY is the address (and protocol) family for the
3081 service specified by HOST and SERVICE. The default (nil) is to use
3082 whatever address family (IPv4 or IPv6) that is defined for the host
3083 and port number specified by HOST and SERVICE. Other address families
3085 local -- for a local (i.e. UNIX) address specified by SERVICE.
3086 ipv4 -- use IPv4 address family only.
3087 ipv6 -- use IPv6 address family only.
3089 :local ADDRESS -- ADDRESS is the local address used for the connection.
3090 This parameter is ignored when opening a client process. When specified
3091 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3093 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3094 connection. This parameter is ignored when opening a stream server
3095 process. For a datagram server process, it specifies the initial
3096 setting of the remote datagram address. When specified for a client
3097 process, the FAMILY, HOST, and SERVICE args are ignored.
3099 The format of ADDRESS depends on the address family:
3100 - An IPv4 address is represented as an vector of integers [A B C D P]
3101 corresponding to numeric IP address A.B.C.D and port number P.
3102 - A local address is represented as a string with the address in the
3103 local address space.
3104 - An "unsupported family" address is represented by a cons (F . AV)
3105 where F is the family number and AV is a vector containing the socket
3106 address data with one element per address data byte. Do not rely on
3107 this format in portable code, as it may depend on implementation
3108 defined constants, data sizes, and data structure alignment.
3110 :coding CODING -- If CODING is a symbol, it specifies the coding
3111 system used for both reading and writing for this process. If CODING
3112 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3113 ENCODING is used for writing.
3115 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
3116 return without waiting for the connection to complete; instead, the
3117 sentinel function will be called with second arg matching "open" (if
3118 successful) or "failed" when the connect completes. Default is to use
3119 a blocking connect (i.e. wait) for stream type connections.
3121 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3122 running when Emacs is exited.
3124 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3125 In the stopped state, a server process does not accept new
3126 connections, and a client process does not handle incoming traffic.
3127 The stopped state is cleared by `continue-process' and set by
3130 :filter FILTER -- Install FILTER as the process filter.
3132 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3133 process filter are multibyte, otherwise they are unibyte.
3134 If this keyword is not specified, the strings are multibyte if
3135 `default-enable-multibyte-characters' is non-nil.
3137 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3139 :log LOG -- Install LOG as the server process log function. This
3140 function is called when the server accepts a network connection from a
3141 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3142 is the server process, CLIENT is the new process for the connection,
3143 and MESSAGE is a string.
3145 :plist PLIST -- Install PLIST as the new process' initial plist.
3147 :server QLEN -- if QLEN is non-nil, create a server process for the
3148 specified FAMILY, SERVICE, and connection type (stream or datagram).
3149 If QLEN is an integer, it is used as the max. length of the server's
3150 pending connection queue (also known as the backlog); the default
3151 queue length is 5. Default is to create a client process.
3153 The following network options can be specified for this connection:
3155 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3156 :dontroute BOOL -- Only send to directly connected hosts.
3157 :keepalive BOOL -- Send keep-alive messages on network stream.
3158 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3159 :oobinline BOOL -- Place out-of-band data in receive data stream.
3160 :priority INT -- Set protocol defined priority for sent packets.
3161 :reuseaddr BOOL -- Allow reusing a recently used local address
3162 (this is allowed by default for a server process).
3163 :bindtodevice NAME -- bind to interface NAME. Using this may require
3164 special privileges on some systems.
3166 Consult the relevant system programmer's manual pages for more
3167 information on using these options.
3170 A server process will listen for and accept connections from clients.
3171 When a client connection is accepted, a new network process is created
3172 for the connection with the following parameters:
3174 - The client's process name is constructed by concatenating the server
3175 process' NAME and a client identification string.
3176 - If the FILTER argument is non-nil, the client process will not get a
3177 separate process buffer; otherwise, the client's process buffer is a newly
3178 created buffer named after the server process' BUFFER name or process
3179 NAME concatenated with the client identification string.
3180 - The connection type and the process filter and sentinel parameters are
3181 inherited from the server process' TYPE, FILTER and SENTINEL.
3182 - The client process' contact info is set according to the client's
3183 addressing information (typically an IP address and a port number).
3184 - The client process' plist is initialized from the server's plist.
3186 Notice that the FILTER and SENTINEL args are never used directly by
3187 the server process. Also, the BUFFER argument is not used directly by
3188 the server process, but via the optional :log function, accepted (and
3189 failed) connections may be logged in the server process' buffer.
3191 The original argument list, modified with the actual connection
3192 information, is available via the `process-contact' function.
3194 usage: (make-network-process &rest ARGS) */)
3200 Lisp_Object contact
;
3201 struct Lisp_Process
*p
;
3202 #ifdef HAVE_GETADDRINFO
3203 struct addrinfo ai
, *res
, *lres
;
3204 struct addrinfo hints
;
3205 char *portstring
, portbuf
[128];
3206 #else /* HAVE_GETADDRINFO */
3207 struct _emacs_addrinfo
3213 struct sockaddr
*ai_addr
;
3214 struct _emacs_addrinfo
*ai_next
;
3216 #endif /* HAVE_GETADDRINFO */
3217 struct sockaddr_in address_in
;
3218 #ifdef HAVE_LOCAL_SOCKETS
3219 struct sockaddr_un address_un
;
3224 int s
= -1, outch
, inch
;
3225 struct gcpro gcpro1
;
3226 int count
= SPECPDL_INDEX ();
3228 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
3230 Lisp_Object name
, buffer
, host
, service
, address
;
3231 Lisp_Object filter
, sentinel
;
3232 int is_non_blocking_client
= 0;
3233 int is_server
= 0, backlog
= 5;
3240 /* Save arguments for process-contact and clone-process. */
3241 contact
= Flist (nargs
, args
);
3245 /* Ensure socket support is loaded if available. */
3246 init_winsock (TRUE
);
3249 /* :type TYPE (nil: stream, datagram */
3250 tem
= Fplist_get (contact
, QCtype
);
3252 socktype
= SOCK_STREAM
;
3253 #ifdef DATAGRAM_SOCKETS
3254 else if (EQ (tem
, Qdatagram
))
3255 socktype
= SOCK_DGRAM
;
3257 #ifdef HAVE_SEQPACKET
3258 else if (EQ (tem
, Qseqpacket
))
3259 socktype
= SOCK_SEQPACKET
;
3262 error ("Unsupported connection type");
3265 tem
= Fplist_get (contact
, QCserver
);
3268 /* Don't support network sockets when non-blocking mode is
3269 not available, since a blocked Emacs is not useful. */
3270 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
3271 error ("Network servers not supported");
3275 backlog
= XINT (tem
);
3279 /* Make QCaddress an alias for :local (server) or :remote (client). */
3280 QCaddress
= is_server
? QClocal
: QCremote
;
3283 if (!is_server
&& socktype
!= SOCK_DGRAM
3284 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
3286 #ifndef NON_BLOCKING_CONNECT
3287 error ("Non-blocking connect not supported");
3289 is_non_blocking_client
= 1;
3293 name
= Fplist_get (contact
, QCname
);
3294 buffer
= Fplist_get (contact
, QCbuffer
);
3295 filter
= Fplist_get (contact
, QCfilter
);
3296 sentinel
= Fplist_get (contact
, QCsentinel
);
3298 CHECK_STRING (name
);
3300 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
3301 ai
.ai_socktype
= socktype
;
3306 /* :local ADDRESS or :remote ADDRESS */
3307 address
= Fplist_get (contact
, QCaddress
);
3308 if (!NILP (address
))
3310 host
= service
= Qnil
;
3312 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
3313 error ("Malformed :address");
3314 ai
.ai_family
= family
;
3315 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
3316 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3320 /* :family FAMILY -- nil (for Inet), local, or integer. */
3321 tem
= Fplist_get (contact
, QCfamily
);
3324 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3330 #ifdef HAVE_LOCAL_SOCKETS
3331 else if (EQ (tem
, Qlocal
))
3335 else if (EQ (tem
, Qipv6
))
3338 else if (EQ (tem
, Qipv4
))
3340 else if (INTEGERP (tem
))
3341 family
= XINT (tem
);
3343 error ("Unknown address family");
3345 ai
.ai_family
= family
;
3347 /* :service SERVICE -- string, integer (port number), or t (random port). */
3348 service
= Fplist_get (contact
, QCservice
);
3350 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3351 host
= Fplist_get (contact
, QChost
);
3354 if (EQ (host
, Qlocal
))
3355 host
= build_string ("localhost");
3356 CHECK_STRING (host
);
3359 #ifdef HAVE_LOCAL_SOCKETS
3360 if (family
== AF_LOCAL
)
3364 message (":family local ignores the :host \"%s\" property",
3366 contact
= Fplist_put (contact
, QChost
, Qnil
);
3369 CHECK_STRING (service
);
3370 bzero (&address_un
, sizeof address_un
);
3371 address_un
.sun_family
= AF_LOCAL
;
3372 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3373 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3374 ai
.ai_addrlen
= sizeof address_un
;
3379 /* Slow down polling to every ten seconds.
3380 Some kernels have a bug which causes retrying connect to fail
3381 after a connect. Polling can interfere with gethostbyname too. */
3382 #ifdef POLL_FOR_INPUT
3383 if (socktype
!= SOCK_DGRAM
)
3385 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3386 bind_polling_period (10);
3390 #ifdef HAVE_GETADDRINFO
3391 /* If we have a host, use getaddrinfo to resolve both host and service.
3392 Otherwise, use getservbyname to lookup the service. */
3396 /* SERVICE can either be a string or int.
3397 Convert to a C string for later use by getaddrinfo. */
3398 if (EQ (service
, Qt
))
3400 else if (INTEGERP (service
))
3402 sprintf (portbuf
, "%ld", (long) XINT (service
));
3403 portstring
= portbuf
;
3407 CHECK_STRING (service
);
3408 portstring
= SDATA (service
);
3413 memset (&hints
, 0, sizeof (hints
));
3415 hints
.ai_family
= family
;
3416 hints
.ai_socktype
= socktype
;
3417 hints
.ai_protocol
= 0;
3419 #ifdef HAVE_RES_INIT
3423 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3425 #ifdef HAVE_GAI_STRERROR
3426 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3428 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3434 #endif /* HAVE_GETADDRINFO */
3436 /* We end up here if getaddrinfo is not defined, or in case no hostname
3437 has been specified (e.g. for a local server process). */
3439 if (EQ (service
, Qt
))
3441 else if (INTEGERP (service
))
3442 port
= htons ((unsigned short) XINT (service
));
3445 struct servent
*svc_info
;
3446 CHECK_STRING (service
);
3447 svc_info
= getservbyname (SDATA (service
),
3448 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3450 error ("Unknown service: %s", SDATA (service
));
3451 port
= svc_info
->s_port
;
3454 bzero (&address_in
, sizeof address_in
);
3455 address_in
.sin_family
= family
;
3456 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3457 address_in
.sin_port
= port
;
3459 #ifndef HAVE_GETADDRINFO
3462 struct hostent
*host_info_ptr
;
3464 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3465 as it may `hang' Emacs for a very long time. */
3469 #ifdef HAVE_RES_INIT
3473 host_info_ptr
= gethostbyname (SDATA (host
));
3478 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3479 host_info_ptr
->h_length
);
3480 family
= host_info_ptr
->h_addrtype
;
3481 address_in
.sin_family
= family
;
3484 /* Attempt to interpret host as numeric inet address */
3486 unsigned long numeric_addr
;
3487 numeric_addr
= inet_addr ((char *) SDATA (host
));
3488 if (numeric_addr
== -1)
3489 error ("Unknown host \"%s\"", SDATA (host
));
3491 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3492 sizeof (address_in
.sin_addr
));
3496 #endif /* not HAVE_GETADDRINFO */
3498 ai
.ai_family
= family
;
3499 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3500 ai
.ai_addrlen
= sizeof address_in
;
3504 /* Do this in case we never enter the for-loop below. */
3505 count1
= SPECPDL_INDEX ();
3508 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3514 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3521 #ifdef DATAGRAM_SOCKETS
3522 if (!is_server
&& socktype
== SOCK_DGRAM
)
3524 #endif /* DATAGRAM_SOCKETS */
3526 #ifdef NON_BLOCKING_CONNECT
3527 if (is_non_blocking_client
)
3530 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3532 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3544 /* Make us close S if quit. */
3545 record_unwind_protect (close_file_unwind
, make_number (s
));
3547 /* Parse network options in the arg list.
3548 We simply ignore anything which isn't a known option (including other keywords).
3549 An error is signaled if setting a known option fails. */
3550 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3551 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3555 /* Configure as a server socket. */
3557 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3558 explicit :reuseaddr key to override this. */
3559 #ifdef HAVE_LOCAL_SOCKETS
3560 if (family
!= AF_LOCAL
)
3562 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3565 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3566 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3569 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3570 report_file_error ("Cannot bind server socket", Qnil
);
3572 #ifdef HAVE_GETSOCKNAME
3573 if (EQ (service
, Qt
))
3575 struct sockaddr_in sa1
;
3576 int len1
= sizeof (sa1
);
3577 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3579 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3580 service
= make_number (ntohs (sa1
.sin_port
));
3581 contact
= Fplist_put (contact
, QCservice
, service
);
3586 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3587 report_file_error ("Cannot listen on server socket", Qnil
);
3595 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3598 if (ret
== 0 || xerrno
== EISCONN
)
3600 /* The unwind-protect will be discarded afterwards.
3601 Likewise for immediate_quit. */
3605 #ifdef NON_BLOCKING_CONNECT
3607 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3611 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3618 if (xerrno
== EINTR
)
3620 /* Unlike most other syscalls connect() cannot be called
3621 again. (That would return EALREADY.) The proper way to
3622 wait for completion is select(). */
3629 sc
= select (s
+ 1, (SELECT_TYPE
*)0, &fdset
, (SELECT_TYPE
*)0,
3636 report_file_error ("select failed", Qnil
);
3640 len
= sizeof xerrno
;
3641 eassert (FD_ISSET (s
, &fdset
));
3642 if (getsockopt (s
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &len
) == -1)
3643 report_file_error ("getsockopt failed", Qnil
);
3645 errno
= xerrno
, report_file_error ("error during connect", Qnil
);
3649 #endif /* !WINDOWSNT */
3653 /* Discard the unwind protect closing S. */
3654 specpdl_ptr
= specpdl
+ count1
;
3659 if (xerrno
== EINTR
)
3666 #ifdef DATAGRAM_SOCKETS
3667 if (socktype
== SOCK_DGRAM
)
3669 if (datagram_address
[s
].sa
)
3671 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3672 datagram_address
[s
].len
= lres
->ai_addrlen
;
3676 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3677 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3680 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3681 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3682 conv_lisp_to_sockaddr (rfamily
, remote
,
3683 datagram_address
[s
].sa
, rlen
);
3687 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3690 contact
= Fplist_put (contact
, QCaddress
,
3691 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3692 #ifdef HAVE_GETSOCKNAME
3695 struct sockaddr_in sa1
;
3696 int len1
= sizeof (sa1
);
3697 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3698 contact
= Fplist_put (contact
, QClocal
,
3699 conv_sockaddr_to_lisp (&sa1
, len1
));
3706 #ifdef HAVE_GETADDRINFO
3715 /* Discard the unwind protect for closing S, if any. */
3716 specpdl_ptr
= specpdl
+ count1
;
3718 /* Unwind bind_polling_period and request_sigio. */
3719 unbind_to (count
, Qnil
);
3723 /* If non-blocking got this far - and failed - assume non-blocking is
3724 not supported after all. This is probably a wrong assumption, but
3725 the normal blocking calls to open-network-stream handles this error
3727 if (is_non_blocking_client
)
3732 report_file_error ("make server process failed", contact
);
3734 report_file_error ("make client process failed", contact
);
3741 buffer
= Fget_buffer_create (buffer
);
3742 proc
= make_process (name
);
3744 chan_process
[inch
] = proc
;
3747 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3750 fcntl (inch
, F_SETFL
, O_NDELAY
);
3754 p
= XPROCESS (proc
);
3756 p
->childp
= contact
;
3757 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3761 p
->sentinel
= sentinel
;
3763 p
->log
= Fplist_get (contact
, QClog
);
3764 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3765 p
->kill_without_query
= 1;
3766 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3771 if (is_server
&& socktype
!= SOCK_DGRAM
)
3772 p
->status
= Qlisten
;
3774 /* Make the process marker point into the process buffer (if any). */
3775 if (BUFFERP (buffer
))
3776 set_marker_both (p
->mark
, buffer
,
3777 BUF_ZV (XBUFFER (buffer
)),
3778 BUF_ZV_BYTE (XBUFFER (buffer
)));
3780 #ifdef NON_BLOCKING_CONNECT
3781 if (is_non_blocking_client
)
3783 /* We may get here if connect did succeed immediately. However,
3784 in that case, we still need to signal this like a non-blocking
3786 p
->status
= Qconnect
;
3787 if (!FD_ISSET (inch
, &connect_wait_mask
))
3789 FD_SET (inch
, &connect_wait_mask
);
3790 num_pending_connects
++;
3795 /* A server may have a client filter setting of Qt, but it must
3796 still listen for incoming connects unless it is stopped. */
3797 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3798 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3800 FD_SET (inch
, &input_wait_mask
);
3801 FD_SET (inch
, &non_keyboard_wait_mask
);
3804 if (inch
> max_process_desc
)
3805 max_process_desc
= inch
;
3807 tem
= Fplist_member (contact
, QCcoding
);
3808 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3809 tem
= Qnil
; /* No error message (too late!). */
3812 /* Setup coding systems for communicating with the network stream. */
3813 struct gcpro gcpro1
;
3814 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3815 Lisp_Object coding_systems
= Qt
;
3816 Lisp_Object args
[5], val
;
3820 val
= XCAR (XCDR (tem
));
3824 else if (!NILP (Vcoding_system_for_read
))
3825 val
= Vcoding_system_for_read
;
3826 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3827 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3828 /* We dare not decode end-of-line format by setting VAL to
3829 Qraw_text, because the existing Emacs Lisp libraries
3830 assume that they receive bare code including a sequene of
3835 if (NILP (host
) || NILP (service
))
3836 coding_systems
= Qnil
;
3839 args
[0] = Qopen_network_stream
, args
[1] = name
,
3840 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3842 coding_systems
= Ffind_operation_coding_system (5, args
);
3845 if (CONSP (coding_systems
))
3846 val
= XCAR (coding_systems
);
3847 else if (CONSP (Vdefault_process_coding_system
))
3848 val
= XCAR (Vdefault_process_coding_system
);
3852 p
->decode_coding_system
= val
;
3856 val
= XCAR (XCDR (tem
));
3860 else if (!NILP (Vcoding_system_for_write
))
3861 val
= Vcoding_system_for_write
;
3862 else if (NILP (current_buffer
->enable_multibyte_characters
))
3866 if (EQ (coding_systems
, Qt
))
3868 if (NILP (host
) || NILP (service
))
3869 coding_systems
= Qnil
;
3872 args
[0] = Qopen_network_stream
, args
[1] = name
,
3873 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3875 coding_systems
= Ffind_operation_coding_system (5, args
);
3879 if (CONSP (coding_systems
))
3880 val
= XCDR (coding_systems
);
3881 else if (CONSP (Vdefault_process_coding_system
))
3882 val
= XCDR (Vdefault_process_coding_system
);
3886 p
->encode_coding_system
= val
;
3888 setup_process_coding_systems (proc
);
3890 p
->decoding_buf
= make_uninit_string (0);
3891 p
->decoding_carryover
= 0;
3892 p
->encoding_buf
= make_uninit_string (0);
3894 p
->inherit_coding_system_flag
3895 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3900 #endif /* HAVE_SOCKETS */
3903 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3906 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3907 doc
: /* Return an alist of all network interfaces and their network address.
3908 Each element is a cons, the car of which is a string containing the
3909 interface name, and the cdr is the network address in internal
3910 format; see the description of ADDRESS in `make-network-process'. */)
3913 struct ifconf ifconf
;
3914 struct ifreq
*ifreqs
= NULL
;
3919 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3925 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3926 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3933 ifconf
.ifc_len
= buf_size
;
3934 ifconf
.ifc_req
= ifreqs
;
3935 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3941 if (ifconf
.ifc_len
== buf_size
)
3945 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3948 while (--ifaces
>= 0)
3950 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3951 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3952 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3954 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3955 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3956 res
= Fcons (Fcons (build_string (namebuf
),
3957 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3958 sizeof (struct sockaddr
))),
3964 #endif /* SIOCGIFCONF */
3966 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3970 const char *flag_sym
;
3973 static const struct ifflag_def ifflag_table
[] = {
3977 #ifdef IFF_BROADCAST
3978 { IFF_BROADCAST
, "broadcast" },
3981 { IFF_DEBUG
, "debug" },
3984 { IFF_LOOPBACK
, "loopback" },
3986 #ifdef IFF_POINTOPOINT
3987 { IFF_POINTOPOINT
, "pointopoint" },
3990 { IFF_RUNNING
, "running" },
3993 { IFF_NOARP
, "noarp" },
3996 { IFF_PROMISC
, "promisc" },
3998 #ifdef IFF_NOTRAILERS
3999 { IFF_NOTRAILERS
, "notrailers" },
4002 { IFF_ALLMULTI
, "allmulti" },
4005 { IFF_MASTER
, "master" },
4008 { IFF_SLAVE
, "slave" },
4010 #ifdef IFF_MULTICAST
4011 { IFF_MULTICAST
, "multicast" },
4014 { IFF_PORTSEL
, "portsel" },
4016 #ifdef IFF_AUTOMEDIA
4017 { IFF_AUTOMEDIA
, "automedia" },
4020 { IFF_DYNAMIC
, "dynamic" },
4023 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
4026 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
4029 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
4032 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
4035 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
4040 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
4041 doc
: /* Return information about network interface named IFNAME.
4042 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4043 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4044 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
4045 FLAGS is the current flags of the interface. */)
4050 Lisp_Object res
= Qnil
;
4055 CHECK_STRING (ifname
);
4057 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
4058 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
4060 s
= socket (AF_INET
, SOCK_STREAM
, 0);
4065 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
4066 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4068 int flags
= rq
.ifr_flags
;
4069 const struct ifflag_def
*fp
;
4073 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4075 if (flags
& fp
->flag_bit
)
4077 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4078 flags
-= fp
->flag_bit
;
4081 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
4083 if (flags
& (1 << fnum
))
4085 elt
= Fcons (make_number (fnum
), elt
);
4090 res
= Fcons (elt
, res
);
4093 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
4094 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4096 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4097 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4101 for (n
= 0; n
< 6; n
++)
4102 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
4103 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4106 res
= Fcons (elt
, res
);
4109 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
4110 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4113 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4114 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4116 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4120 res
= Fcons (elt
, res
);
4123 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4124 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4127 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4130 res
= Fcons (elt
, res
);
4133 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
4134 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4137 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4140 res
= Fcons (elt
, res
);
4144 return any
? res
: Qnil
;
4147 #endif /* HAVE_SOCKETS */
4149 /* Turn off input and output for process PROC. */
4152 deactivate_process (proc
)
4155 register int inchannel
, outchannel
;
4156 register struct Lisp_Process
*p
= XPROCESS (proc
);
4158 inchannel
= p
->infd
;
4159 outchannel
= p
->outfd
;
4161 #ifdef ADAPTIVE_READ_BUFFERING
4162 if (p
->read_output_delay
> 0)
4164 if (--process_output_delay_count
< 0)
4165 process_output_delay_count
= 0;
4166 p
->read_output_delay
= 0;
4167 p
->read_output_skip
= 0;
4173 /* Beware SIGCHLD hereabouts. */
4174 flush_pending_output (inchannel
);
4175 emacs_close (inchannel
);
4176 if (outchannel
>= 0 && outchannel
!= inchannel
)
4177 emacs_close (outchannel
);
4181 #ifdef DATAGRAM_SOCKETS
4182 if (DATAGRAM_CHAN_P (inchannel
))
4184 xfree (datagram_address
[inchannel
].sa
);
4185 datagram_address
[inchannel
].sa
= 0;
4186 datagram_address
[inchannel
].len
= 0;
4189 chan_process
[inchannel
] = Qnil
;
4190 FD_CLR (inchannel
, &input_wait_mask
);
4191 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4192 #ifdef NON_BLOCKING_CONNECT
4193 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4195 FD_CLR (inchannel
, &connect_wait_mask
);
4196 if (--num_pending_connects
< 0)
4200 if (inchannel
== max_process_desc
)
4203 /* We just closed the highest-numbered process input descriptor,
4204 so recompute the highest-numbered one now. */
4205 max_process_desc
= 0;
4206 for (i
= 0; i
< MAXDESC
; i
++)
4207 if (!NILP (chan_process
[i
]))
4208 max_process_desc
= i
;
4213 /* Close all descriptors currently in use for communication
4214 with subprocess. This is used in a newly-forked subprocess
4215 to get rid of irrelevant descriptors. */
4218 close_process_descs ()
4222 for (i
= 0; i
< MAXDESC
; i
++)
4224 Lisp_Object process
;
4225 process
= chan_process
[i
];
4226 if (!NILP (process
))
4228 int in
= XPROCESS (process
)->infd
;
4229 int out
= XPROCESS (process
)->outfd
;
4232 if (out
>= 0 && in
!= out
)
4239 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4241 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4242 It is read into the process' buffers or given to their filter functions.
4243 Non-nil arg PROCESS means do not return until some output has been received
4246 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
4247 and milliseconds to wait; return after that much time whether or not
4248 there is any subprocess output. If SECONDS is a floating point number,
4249 it specifies a fractional number of seconds to wait.
4250 The MILLISEC argument is obsolete and should be avoided.
4252 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
4253 from PROCESS, suspending reading output from other processes.
4254 If JUST-THIS-ONE is an integer, don't run any timers either.
4255 Return non-nil if we received any output before the timeout expired. */)
4256 (process
, seconds
, millisec
, just_this_one
)
4257 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
4259 int secs
, usecs
= 0;
4261 if (! NILP (process
))
4262 CHECK_PROCESS (process
);
4264 just_this_one
= Qnil
;
4266 if (!NILP (millisec
))
4267 { /* Obsolete calling convention using integers rather than floats. */
4268 CHECK_NUMBER (millisec
);
4270 seconds
= make_float (XINT (millisec
) / 1000.0);
4273 CHECK_NUMBER (seconds
);
4274 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4278 if (!NILP (seconds
))
4280 if (INTEGERP (seconds
))
4281 secs
= XINT (seconds
);
4282 else if (FLOATP (seconds
))
4284 double timeout
= XFLOAT_DATA (seconds
);
4285 secs
= (int) timeout
;
4286 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
4289 wrong_type_argument (Qnumberp
, seconds
);
4291 if (secs
< 0 || (secs
== 0 && usecs
== 0))
4292 secs
= -1, usecs
= 0;
4295 secs
= NILP (process
) ? -1 : 0;
4298 (wait_reading_process_output (secs
, usecs
, 0, 0,
4300 !NILP (process
) ? XPROCESS (process
) : NULL
,
4301 NILP (just_this_one
) ? 0 :
4302 !INTEGERP (just_this_one
) ? 1 : -1)
4306 /* Accept a connection for server process SERVER on CHANNEL. */
4308 static int connect_counter
= 0;
4311 server_accept_connection (server
, channel
)
4315 Lisp_Object proc
, caller
, name
, buffer
;
4316 Lisp_Object contact
, host
, service
;
4317 struct Lisp_Process
*ps
= XPROCESS (server
);
4318 struct Lisp_Process
*p
;
4322 struct sockaddr_in in
;
4324 struct sockaddr_in6 in6
;
4326 #ifdef HAVE_LOCAL_SOCKETS
4327 struct sockaddr_un un
;
4330 int len
= sizeof saddr
;
4332 s
= accept (channel
, &saddr
.sa
, &len
);
4341 if (code
== EWOULDBLOCK
)
4345 if (!NILP (ps
->log
))
4346 call3 (ps
->log
, server
, Qnil
,
4347 concat3 (build_string ("accept failed with code"),
4348 Fnumber_to_string (make_number (code
)),
4349 build_string ("\n")));
4355 /* Setup a new process to handle the connection. */
4357 /* Generate a unique identification of the caller, and build contact
4358 information for this process. */
4361 switch (saddr
.sa
.sa_family
)
4365 Lisp_Object args
[5];
4366 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4367 args
[0] = build_string ("%d.%d.%d.%d");
4368 args
[1] = make_number (*ip
++);
4369 args
[2] = make_number (*ip
++);
4370 args
[3] = make_number (*ip
++);
4371 args
[4] = make_number (*ip
++);
4372 host
= Fformat (5, args
);
4373 service
= make_number (ntohs (saddr
.in
.sin_port
));
4375 args
[0] = build_string (" <%s:%d>");
4378 caller
= Fformat (3, args
);
4385 Lisp_Object args
[9];
4386 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4388 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4389 for (i
= 0; i
< 8; i
++)
4390 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4391 host
= Fformat (9, args
);
4392 service
= make_number (ntohs (saddr
.in
.sin_port
));
4394 args
[0] = build_string (" <[%s]:%d>");
4397 caller
= Fformat (3, args
);
4402 #ifdef HAVE_LOCAL_SOCKETS
4406 caller
= Fnumber_to_string (make_number (connect_counter
));
4407 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4411 /* Create a new buffer name for this process if it doesn't have a
4412 filter. The new buffer name is based on the buffer name or
4413 process name of the server process concatenated with the caller
4416 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4420 buffer
= ps
->buffer
;
4422 buffer
= Fbuffer_name (buffer
);
4427 buffer
= concat2 (buffer
, caller
);
4428 buffer
= Fget_buffer_create (buffer
);
4432 /* Generate a unique name for the new server process. Combine the
4433 server process name with the caller identification. */
4435 name
= concat2 (ps
->name
, caller
);
4436 proc
= make_process (name
);
4438 chan_process
[s
] = proc
;
4441 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4444 fcntl (s
, F_SETFL
, O_NDELAY
);
4448 p
= XPROCESS (proc
);
4450 /* Build new contact information for this setup. */
4451 contact
= Fcopy_sequence (ps
->childp
);
4452 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4453 contact
= Fplist_put (contact
, QChost
, host
);
4454 if (!NILP (service
))
4455 contact
= Fplist_put (contact
, QCservice
, service
);
4456 contact
= Fplist_put (contact
, QCremote
,
4457 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4458 #ifdef HAVE_GETSOCKNAME
4460 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4461 contact
= Fplist_put (contact
, QClocal
,
4462 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4465 p
->childp
= contact
;
4466 p
->plist
= Fcopy_sequence (ps
->plist
);
4470 p
->sentinel
= ps
->sentinel
;
4471 p
->filter
= ps
->filter
;
4478 /* Client processes for accepted connections are not stopped initially. */
4479 if (!EQ (p
->filter
, Qt
))
4481 FD_SET (s
, &input_wait_mask
);
4482 FD_SET (s
, &non_keyboard_wait_mask
);
4485 if (s
> max_process_desc
)
4486 max_process_desc
= s
;
4488 /* Setup coding system for new process based on server process.
4489 This seems to be the proper thing to do, as the coding system
4490 of the new process should reflect the settings at the time the
4491 server socket was opened; not the current settings. */
4493 p
->decode_coding_system
= ps
->decode_coding_system
;
4494 p
->encode_coding_system
= ps
->encode_coding_system
;
4495 setup_process_coding_systems (proc
);
4497 p
->decoding_buf
= make_uninit_string (0);
4498 p
->decoding_carryover
= 0;
4499 p
->encoding_buf
= make_uninit_string (0);
4501 p
->inherit_coding_system_flag
4502 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4504 if (!NILP (ps
->log
))
4505 call3 (ps
->log
, server
, proc
,
4506 concat3 (build_string ("accept from "),
4507 (STRINGP (host
) ? host
: build_string ("-")),
4508 build_string ("\n")));
4510 if (!NILP (p
->sentinel
))
4511 exec_sentinel (proc
,
4512 concat3 (build_string ("open from "),
4513 (STRINGP (host
) ? host
: build_string ("-")),
4514 build_string ("\n")));
4517 /* This variable is different from waiting_for_input in keyboard.c.
4518 It is used to communicate to a lisp process-filter/sentinel (via the
4519 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4520 for user-input when that process-filter was called.
4521 waiting_for_input cannot be used as that is by definition 0 when
4522 lisp code is being evalled.
4523 This is also used in record_asynch_buffer_change.
4524 For that purpose, this must be 0
4525 when not inside wait_reading_process_output. */
4526 static int waiting_for_user_input_p
;
4529 wait_reading_process_output_unwind (data
)
4532 waiting_for_user_input_p
= XINT (data
);
4536 /* This is here so breakpoints can be put on it. */
4538 wait_reading_process_output_1 ()
4542 /* Use a wrapper around select to work around a bug in gdb 5.3.
4543 Normally, the wrapper is optimized away by inlining.
4545 If emacs is stopped inside select, the gdb backtrace doesn't
4546 show the function which called select, so it is practically
4547 impossible to step through wait_reading_process_output. */
4551 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4553 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4556 return select (n
, rfd
, wfd
, xfd
, tmo
);
4558 #define select select_wrapper
4561 /* Read and dispose of subprocess output while waiting for timeout to
4562 elapse and/or keyboard input to be available.
4565 timeout in seconds, or
4566 zero for no limit, or
4567 -1 means gobble data immediately available but don't wait for any.
4570 an additional duration to wait, measured in microseconds.
4571 If this is nonzero and time_limit is 0, then the timeout
4572 consists of MICROSECS only.
4574 READ_KBD is a lisp value:
4575 0 to ignore keyboard input, or
4576 1 to return when input is available, or
4577 -1 meaning caller will actually read the input, so don't throw to
4578 the quit handler, or
4580 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4581 output that arrives.
4583 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4584 (and gobble terminal input into the buffer if any arrives).
4586 If WAIT_PROC is specified, wait until something arrives from that
4587 process. The return value is true if we read some input from
4590 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4591 (suspending output from other processes). A negative value
4592 means don't run any timers either.
4594 If WAIT_PROC is specified, then the function returns true if we
4595 received input from that process before the timeout elapsed.
4596 Otherwise, return true if we received input from any process. */
4599 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4600 wait_for_cell
, wait_proc
, just_wait_proc
)
4601 int time_limit
, microsecs
, read_kbd
, do_display
;
4602 Lisp_Object wait_for_cell
;
4603 struct Lisp_Process
*wait_proc
;
4606 register int channel
, nfds
;
4607 SELECT_TYPE Available
;
4608 #ifdef NON_BLOCKING_CONNECT
4609 SELECT_TYPE Connecting
;
4612 int check_delay
, no_avail
;
4615 EMACS_TIME timeout
, end_time
;
4616 int wait_channel
= -1;
4617 int got_some_input
= 0;
4618 int count
= SPECPDL_INDEX ();
4620 FD_ZERO (&Available
);
4621 #ifdef NON_BLOCKING_CONNECT
4622 FD_ZERO (&Connecting
);
4625 if (time_limit
== 0 && wait_proc
&& !NILP (Vinhibit_quit
)
4626 && !(CONSP (wait_proc
->status
) && EQ (XCAR (wait_proc
->status
), Qexit
)))
4627 message ("Blocking call to accept-process-output with quit inhibited!!");
4629 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4630 if (wait_proc
!= NULL
)
4631 wait_channel
= wait_proc
->infd
;
4633 record_unwind_protect (wait_reading_process_output_unwind
,
4634 make_number (waiting_for_user_input_p
));
4635 waiting_for_user_input_p
= read_kbd
;
4637 /* Since we may need to wait several times,
4638 compute the absolute time to return at. */
4639 if (time_limit
|| microsecs
)
4641 EMACS_GET_TIME (end_time
);
4642 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4643 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4648 int timeout_reduced_for_timers
= 0;
4650 /* If calling from keyboard input, do not quit
4651 since we want to return C-g as an input character.
4652 Otherwise, do pending quit if requested. */
4657 process_pending_signals ();
4660 /* Exit now if the cell we're waiting for became non-nil. */
4661 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4664 /* Compute time from now till when time limit is up */
4665 /* Exit if already run out */
4666 if (time_limit
== -1)
4668 /* -1 specified for timeout means
4669 gobble output available now
4670 but don't wait at all. */
4672 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4674 else if (time_limit
|| microsecs
)
4676 EMACS_GET_TIME (timeout
);
4677 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4678 if (EMACS_TIME_NEG_P (timeout
))
4683 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4686 /* Normally we run timers here.
4687 But not if wait_for_cell; in those cases,
4688 the wait is supposed to be short,
4689 and those callers cannot handle running arbitrary Lisp code here. */
4690 if (NILP (wait_for_cell
)
4691 && just_wait_proc
>= 0)
4693 EMACS_TIME timer_delay
;
4697 int old_timers_run
= timers_run
;
4698 struct buffer
*old_buffer
= current_buffer
;
4699 Lisp_Object old_window
= selected_window
;
4701 timer_delay
= timer_check (1);
4703 /* If a timer has run, this might have changed buffers
4704 an alike. Make read_key_sequence aware of that. */
4705 if (timers_run
!= old_timers_run
4706 && (old_buffer
!= current_buffer
4707 || !EQ (old_window
, selected_window
))
4708 && waiting_for_user_input_p
== -1)
4709 record_asynch_buffer_change ();
4711 if (timers_run
!= old_timers_run
&& do_display
)
4712 /* We must retry, since a timer may have requeued itself
4713 and that could alter the time_delay. */
4714 redisplay_preserve_echo_area (9);
4718 while (!detect_input_pending ());
4720 /* If there is unread keyboard input, also return. */
4722 && requeued_events_pending_p ())
4725 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4727 EMACS_TIME difference
;
4728 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4729 if (EMACS_TIME_NEG_P (difference
))
4731 timeout
= timer_delay
;
4732 timeout_reduced_for_timers
= 1;
4735 /* If time_limit is -1, we are not going to wait at all. */
4736 else if (time_limit
!= -1)
4738 /* This is so a breakpoint can be put here. */
4739 wait_reading_process_output_1 ();
4743 /* Cause C-g and alarm signals to take immediate action,
4744 and cause input available signals to zero out timeout.
4746 It is important that we do this before checking for process
4747 activity. If we get a SIGCHLD after the explicit checks for
4748 process activity, timeout is the only way we will know. */
4750 set_waiting_for_input (&timeout
);
4752 /* If status of something has changed, and no input is
4753 available, notify the user of the change right away. After
4754 this explicit check, we'll let the SIGCHLD handler zap
4755 timeout to get our attention. */
4756 if (update_tick
!= process_tick
)
4759 #ifdef NON_BLOCKING_CONNECT
4763 Atemp
= input_wait_mask
;
4764 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4766 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4767 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4770 #ifdef NON_BLOCKING_CONNECT
4771 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4775 (SELECT_TYPE
*)0, &timeout
)
4778 /* It's okay for us to do this and then continue with
4779 the loop, since timeout has already been zeroed out. */
4780 clear_waiting_for_input ();
4781 status_notify (NULL
);
4782 if (do_display
) redisplay_preserve_echo_area (13);
4786 /* Don't wait for output from a non-running process. Just
4787 read whatever data has already been received. */
4788 if (wait_proc
&& wait_proc
->raw_status_new
)
4789 update_status (wait_proc
);
4791 && ! EQ (wait_proc
->status
, Qrun
)
4792 && ! EQ (wait_proc
->status
, Qconnect
))
4794 int nread
, total_nread
= 0;
4796 clear_waiting_for_input ();
4797 XSETPROCESS (proc
, wait_proc
);
4799 /* Read data from the process, until we exhaust it. */
4800 while (wait_proc
->infd
>= 0)
4802 nread
= read_process_output (proc
, wait_proc
->infd
);
4809 total_nread
+= nread
;
4813 else if (nread
== -1 && EIO
== errno
)
4817 else if (nread
== -1 && EAGAIN
== errno
)
4821 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4825 if (total_nread
> 0 && do_display
)
4826 redisplay_preserve_echo_area (10);
4831 /* Wait till there is something to do */
4833 if (wait_proc
&& just_wait_proc
)
4835 if (wait_proc
->infd
< 0) /* Terminated */
4837 FD_SET (wait_proc
->infd
, &Available
);
4839 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4841 else if (!NILP (wait_for_cell
))
4843 Available
= non_process_wait_mask
;
4845 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4850 Available
= non_keyboard_wait_mask
;
4852 Available
= input_wait_mask
;
4853 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4854 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4857 /* If frame size has changed or the window is newly mapped,
4858 redisplay now, before we start to wait. There is a race
4859 condition here; if a SIGIO arrives between now and the select
4860 and indicates that a frame is trashed, the select may block
4861 displaying a trashed screen. */
4862 if (frame_garbaged
&& do_display
)
4864 clear_waiting_for_input ();
4865 redisplay_preserve_echo_area (11);
4867 set_waiting_for_input (&timeout
);
4871 if (read_kbd
&& detect_input_pending ())
4878 #ifdef NON_BLOCKING_CONNECT
4880 Connecting
= connect_wait_mask
;
4883 #ifdef ADAPTIVE_READ_BUFFERING
4884 /* Set the timeout for adaptive read buffering if any
4885 process has non-zero read_output_skip and non-zero
4886 read_output_delay, and we are not reading output for a
4887 specific wait_channel. It is not executed if
4888 Vprocess_adaptive_read_buffering is nil. */
4889 if (process_output_skip
&& check_delay
> 0)
4891 int usecs
= EMACS_USECS (timeout
);
4892 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4893 usecs
= READ_OUTPUT_DELAY_MAX
;
4894 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4896 proc
= chan_process
[channel
];
4899 /* Find minimum non-zero read_output_delay among the
4900 processes with non-zero read_output_skip. */
4901 if (XPROCESS (proc
)->read_output_delay
> 0)
4904 if (!XPROCESS (proc
)->read_output_skip
)
4906 FD_CLR (channel
, &Available
);
4907 XPROCESS (proc
)->read_output_skip
= 0;
4908 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4909 usecs
= XPROCESS (proc
)->read_output_delay
;
4912 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4913 process_output_skip
= 0;
4916 #if defined (USE_GTK) || defined (HAVE_GCONF)
4918 #elif defined (HAVE_NS)
4923 (max (max (max_process_desc
, max_keyboard_desc
),
4926 #ifdef NON_BLOCKING_CONNECT
4927 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4931 (SELECT_TYPE
*)0, &timeout
);
4936 /* Make C-g and alarm signals set flags again */
4937 clear_waiting_for_input ();
4939 /* If we woke up due to SIGWINCH, actually change size now. */
4940 do_pending_window_change (0);
4942 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4943 /* We wanted the full specified time, so return now. */
4947 if (xerrno
== EINTR
)
4949 else if (xerrno
== EBADF
)
4952 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4953 the child's closure of the pts gives the parent a SIGHUP, and
4954 the ptc file descriptor is automatically closed,
4955 yielding EBADF here or at select() call above.
4956 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4957 in m/ibmrt-aix.h), and here we just ignore the select error.
4958 Cleanup occurs c/o status_notify after SIGCLD. */
4959 no_avail
= 1; /* Cannot depend on values returned */
4965 error ("select error: %s", emacs_strerror (xerrno
));
4970 FD_ZERO (&Available
);
4971 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4974 #if 0 /* When polling is used, interrupt_input is 0,
4975 so get_input_pending should read the input.
4976 So this should not be needed. */
4977 /* If we are using polling for input,
4978 and we see input available, make it get read now.
4979 Otherwise it might not actually get read for a second.
4980 And on hpux, since we turn off polling in wait_reading_process_output,
4981 it might never get read at all if we don't spend much time
4982 outside of wait_reading_process_output. */
4983 if (read_kbd
&& interrupt_input
4984 && keyboard_bit_set (&Available
)
4985 && input_polling_used ())
4986 kill (getpid (), SIGALRM
);
4989 /* Check for keyboard input */
4990 /* If there is any, return immediately
4991 to give it higher priority than subprocesses */
4995 int old_timers_run
= timers_run
;
4996 struct buffer
*old_buffer
= current_buffer
;
4997 Lisp_Object old_window
= selected_window
;
5000 if (detect_input_pending_run_timers (do_display
))
5002 swallow_events (do_display
);
5003 if (detect_input_pending_run_timers (do_display
))
5007 /* If a timer has run, this might have changed buffers
5008 an alike. Make read_key_sequence aware of that. */
5009 if (timers_run
!= old_timers_run
5010 && waiting_for_user_input_p
== -1
5011 && (old_buffer
!= current_buffer
5012 || !EQ (old_window
, selected_window
)))
5013 record_asynch_buffer_change ();
5019 /* If there is unread keyboard input, also return. */
5021 && requeued_events_pending_p ())
5024 /* If we are not checking for keyboard input now,
5025 do process events (but don't run any timers).
5026 This is so that X events will be processed.
5027 Otherwise they may have to wait until polling takes place.
5028 That would causes delays in pasting selections, for example.
5030 (We used to do this only if wait_for_cell.) */
5031 if (read_kbd
== 0 && detect_input_pending ())
5033 swallow_events (do_display
);
5034 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5035 if (detect_input_pending ())
5040 /* Exit now if the cell we're waiting for became non-nil. */
5041 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5045 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5046 go read it. This can happen with X on BSD after logging out.
5047 In that case, there really is no input and no SIGIO,
5048 but select says there is input. */
5050 if (read_kbd
&& interrupt_input
5051 && keyboard_bit_set (&Available
) && ! noninteractive
)
5052 kill (getpid (), SIGIO
);
5056 got_some_input
|= nfds
> 0;
5058 /* If checking input just got us a size-change event from X,
5059 obey it now if we should. */
5060 if (read_kbd
|| ! NILP (wait_for_cell
))
5061 do_pending_window_change (0);
5063 /* Check for data from a process. */
5064 if (no_avail
|| nfds
== 0)
5067 /* Really FIRST_PROC_DESC should be 0 on Unix,
5068 but this is safer in the short run. */
5069 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5071 if (FD_ISSET (channel
, &Available
)
5072 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
5076 /* If waiting for this channel, arrange to return as
5077 soon as no more input to be processed. No more
5079 if (wait_channel
== channel
)
5085 proc
= chan_process
[channel
];
5089 /* If this is a server stream socket, accept connection. */
5090 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5092 server_accept_connection (proc
, channel
);
5096 /* Read data from the process, starting with our
5097 buffered-ahead character if we have one. */
5099 nread
= read_process_output (proc
, channel
);
5102 /* Since read_process_output can run a filter,
5103 which can call accept-process-output,
5104 don't try to read from any other processes
5105 before doing the select again. */
5106 FD_ZERO (&Available
);
5109 redisplay_preserve_echo_area (12);
5112 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5115 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
5116 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
5118 else if (nread
== -1 && errno
== EAGAIN
)
5122 else if (nread
== -1 && errno
== EAGAIN
)
5124 /* Note that we cannot distinguish between no input
5125 available now and a closed pipe.
5126 With luck, a closed pipe will be accompanied by
5127 subprocess termination and SIGCHLD. */
5128 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5130 #endif /* O_NDELAY */
5131 #endif /* O_NONBLOCK */
5133 /* On some OSs with ptys, when the process on one end of
5134 a pty exits, the other end gets an error reading with
5135 errno = EIO instead of getting an EOF (0 bytes read).
5136 Therefore, if we get an error reading and errno =
5137 EIO, just continue, because the child process has
5138 exited and should clean itself up soon (e.g. when we
5141 However, it has been known to happen that the SIGCHLD
5142 got lost. So raise the signal again just in case.
5144 else if (nread
== -1 && errno
== EIO
)
5146 /* Clear the descriptor now, so we only raise the
5147 signal once. Don't do this if `process' is only
5149 if (XPROCESS (proc
)->pid
!= -2)
5151 FD_CLR (channel
, &input_wait_mask
);
5152 FD_CLR (channel
, &non_keyboard_wait_mask
);
5154 kill (getpid (), SIGCHLD
);
5157 #endif /* HAVE_PTYS */
5158 /* If we can detect process termination, don't consider the process
5159 gone just because its pipe is closed. */
5161 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5166 /* Preserve status of processes already terminated. */
5167 XPROCESS (proc
)->tick
= ++process_tick
;
5168 deactivate_process (proc
);
5169 if (XPROCESS (proc
)->raw_status_new
)
5170 update_status (XPROCESS (proc
));
5171 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5172 XPROCESS (proc
)->status
5173 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5176 #ifdef NON_BLOCKING_CONNECT
5177 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
5178 && FD_ISSET (channel
, &connect_wait_mask
))
5180 struct Lisp_Process
*p
;
5182 FD_CLR (channel
, &connect_wait_mask
);
5183 if (--num_pending_connects
< 0)
5186 proc
= chan_process
[channel
];
5190 p
= XPROCESS (proc
);
5193 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5194 So only use it on systems where it is known to work. */
5196 int xlen
= sizeof(xerrno
);
5197 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5202 struct sockaddr pname
;
5203 int pnamelen
= sizeof(pname
);
5205 /* If connection failed, getpeername will fail. */
5207 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
5209 /* Obtain connect failure code through error slippage. */
5212 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
5219 p
->tick
= ++process_tick
;
5220 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
5221 deactivate_process (proc
);
5226 /* Execute the sentinel here. If we had relied on
5227 status_notify to do it later, it will read input
5228 from the process before calling the sentinel. */
5229 exec_sentinel (proc
, build_string ("open\n"));
5230 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
5232 FD_SET (p
->infd
, &input_wait_mask
);
5233 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5237 #endif /* NON_BLOCKING_CONNECT */
5238 } /* end for each file descriptor */
5239 } /* end while exit conditions not met */
5241 unbind_to (count
, Qnil
);
5243 /* If calling from keyboard input, do not quit
5244 since we want to return C-g as an input character.
5245 Otherwise, do pending quit if requested. */
5248 /* Prevent input_pending from remaining set if we quit. */
5249 clear_input_pending ();
5253 return got_some_input
;
5256 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5259 read_process_output_call (fun_and_args
)
5260 Lisp_Object fun_and_args
;
5262 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5266 read_process_output_error_handler (error
)
5269 cmd_error_internal (error
, "error in process filter: ");
5271 update_echo_area ();
5272 Fsleep_for (make_number (2), Qnil
);
5276 /* Read pending output from the process channel,
5277 starting with our buffered-ahead character if we have one.
5278 Yield number of decoded characters read.
5280 This function reads at most 4096 characters.
5281 If you want to read all available subprocess output,
5282 you must call it repeatedly until it returns zero.
5284 The characters read are decoded according to PROC's coding-system
5288 read_process_output (proc
, channel
)
5290 register int channel
;
5292 register int nbytes
;
5294 register Lisp_Object outstream
;
5295 register struct Lisp_Process
*p
= XPROCESS (proc
);
5296 register int opoint
;
5297 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5298 int carryover
= p
->decoding_carryover
;
5300 int count
= SPECPDL_INDEX ();
5301 Lisp_Object odeactivate
;
5303 chars
= (char *) alloca (carryover
+ readmax
);
5305 /* See the comment above. */
5306 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5308 #ifdef DATAGRAM_SOCKETS
5309 /* We have a working select, so proc_buffered_char is always -1. */
5310 if (DATAGRAM_CHAN_P (channel
))
5312 int len
= datagram_address
[channel
].len
;
5313 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5314 0, datagram_address
[channel
].sa
, &len
);
5318 if (proc_buffered_char
[channel
] < 0)
5320 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5321 #ifdef ADAPTIVE_READ_BUFFERING
5322 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5324 int delay
= p
->read_output_delay
;
5327 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5330 process_output_delay_count
++;
5331 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5334 else if (delay
> 0 && (nbytes
== readmax
))
5336 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5338 process_output_delay_count
--;
5340 p
->read_output_delay
= delay
;
5343 p
->read_output_skip
= 1;
5344 process_output_skip
= 1;
5351 chars
[carryover
] = proc_buffered_char
[channel
];
5352 proc_buffered_char
[channel
] = -1;
5353 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5357 nbytes
= nbytes
+ 1;
5360 p
->decoding_carryover
= 0;
5362 /* At this point, NBYTES holds number of bytes just received
5363 (including the one in proc_buffered_char[channel]). */
5366 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5368 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5371 /* Now set NBYTES how many bytes we must decode. */
5372 nbytes
+= carryover
;
5374 odeactivate
= Vdeactivate_mark
;
5375 /* There's no good reason to let process filters change the current
5376 buffer, and many callers of accept-process-output, sit-for, and
5377 friends don't expect current-buffer to be changed from under them. */
5378 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
5380 /* Read and dispose of the process output. */
5381 outstream
= p
->filter
;
5382 if (!NILP (outstream
))
5384 Lisp_Object obuffer
, okeymap
;
5386 int outer_running_asynch_code
= running_asynch_code
;
5387 int waiting
= waiting_for_user_input_p
;
5389 /* No need to gcpro these, because all we do with them later
5390 is test them for EQness, and none of them should be a string. */
5391 XSETBUFFER (obuffer
, current_buffer
);
5392 okeymap
= current_buffer
->keymap
;
5394 /* We inhibit quit here instead of just catching it so that
5395 hitting ^G when a filter happens to be running won't screw
5397 specbind (Qinhibit_quit
, Qt
);
5398 specbind (Qlast_nonmenu_event
, Qt
);
5400 /* In case we get recursively called,
5401 and we already saved the match data nonrecursively,
5402 save the same match data in safely recursive fashion. */
5403 if (outer_running_asynch_code
)
5406 /* Don't clobber the CURRENT match data, either! */
5407 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5408 restore_search_regs ();
5409 record_unwind_save_match_data ();
5410 Fset_match_data (tem
, Qt
);
5413 /* For speed, if a search happens within this code,
5414 save the match data in a special nonrecursive fashion. */
5415 running_asynch_code
= 1;
5417 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5418 text
= coding
->dst_object
;
5419 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5420 /* A new coding system might be found. */
5421 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5423 p
->decode_coding_system
= Vlast_coding_system_used
;
5425 /* Don't call setup_coding_system for
5426 proc_decode_coding_system[channel] here. It is done in
5427 detect_coding called via decode_coding above. */
5429 /* If a coding system for encoding is not yet decided, we set
5430 it as the same as coding-system for decoding.
5432 But, before doing that we must check if
5433 proc_encode_coding_system[p->outfd] surely points to a
5434 valid memory because p->outfd will be changed once EOF is
5435 sent to the process. */
5436 if (NILP (p
->encode_coding_system
)
5437 && proc_encode_coding_system
[p
->outfd
])
5439 p
->encode_coding_system
5440 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5441 setup_coding_system (p
->encode_coding_system
,
5442 proc_encode_coding_system
[p
->outfd
]);
5446 if (coding
->carryover_bytes
> 0)
5448 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5449 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5450 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5451 coding
->carryover_bytes
);
5452 p
->decoding_carryover
= coding
->carryover_bytes
;
5454 if (SBYTES (text
) > 0)
5455 internal_condition_case_1 (read_process_output_call
,
5457 Fcons (proc
, Fcons (text
, Qnil
))),
5458 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5459 read_process_output_error_handler
);
5461 /* If we saved the match data nonrecursively, restore it now. */
5462 restore_search_regs ();
5463 running_asynch_code
= outer_running_asynch_code
;
5465 /* Restore waiting_for_user_input_p as it was
5466 when we were called, in case the filter clobbered it. */
5467 waiting_for_user_input_p
= waiting
;
5469 #if 0 /* Call record_asynch_buffer_change unconditionally,
5470 because we might have changed minor modes or other things
5471 that affect key bindings. */
5472 if (! EQ (Fcurrent_buffer (), obuffer
)
5473 || ! EQ (current_buffer
->keymap
, okeymap
))
5475 /* But do it only if the caller is actually going to read events.
5476 Otherwise there's no need to make him wake up, and it could
5477 cause trouble (for example it would make sit_for return). */
5478 if (waiting_for_user_input_p
== -1)
5479 record_asynch_buffer_change ();
5482 /* If no filter, write into buffer if it isn't dead. */
5483 else if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5485 Lisp_Object old_read_only
;
5486 int old_begv
, old_zv
;
5487 int old_begv_byte
, old_zv_byte
;
5488 int before
, before_byte
;
5493 Fset_buffer (p
->buffer
);
5495 opoint_byte
= PT_BYTE
;
5496 old_read_only
= current_buffer
->read_only
;
5499 old_begv_byte
= BEGV_BYTE
;
5500 old_zv_byte
= ZV_BYTE
;
5502 current_buffer
->read_only
= Qnil
;
5504 /* Insert new output into buffer
5505 at the current end-of-output marker,
5506 thus preserving logical ordering of input and output. */
5507 if (XMARKER (p
->mark
)->buffer
)
5508 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5509 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5512 SET_PT_BOTH (ZV
, ZV_BYTE
);
5514 before_byte
= PT_BYTE
;
5516 /* If the output marker is outside of the visible region, save
5517 the restriction and widen. */
5518 if (! (BEGV
<= PT
&& PT
<= ZV
))
5521 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5522 text
= coding
->dst_object
;
5523 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5524 /* A new coding system might be found. See the comment in the
5525 similar code in the previous `if' block. */
5526 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5528 p
->decode_coding_system
= Vlast_coding_system_used
;
5529 if (NILP (p
->encode_coding_system
)
5530 && proc_encode_coding_system
[p
->outfd
])
5532 p
->encode_coding_system
5533 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5534 setup_coding_system (p
->encode_coding_system
,
5535 proc_encode_coding_system
[p
->outfd
]);
5538 if (coding
->carryover_bytes
> 0)
5540 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5541 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5542 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5543 coding
->carryover_bytes
);
5544 p
->decoding_carryover
= coding
->carryover_bytes
;
5546 /* Adjust the multibyteness of TEXT to that of the buffer. */
5547 if (NILP (current_buffer
->enable_multibyte_characters
)
5548 != ! STRING_MULTIBYTE (text
))
5549 text
= (STRING_MULTIBYTE (text
)
5550 ? Fstring_as_unibyte (text
)
5551 : Fstring_to_multibyte (text
));
5552 /* Insert before markers in case we are inserting where
5553 the buffer's mark is, and the user's next command is Meta-y. */
5554 insert_from_string_before_markers (text
, 0, 0,
5555 SCHARS (text
), SBYTES (text
), 0);
5557 /* Make sure the process marker's position is valid when the
5558 process buffer is changed in the signal_after_change above.
5559 W3 is known to do that. */
5560 if (BUFFERP (p
->buffer
)
5561 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5562 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5564 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5566 update_mode_lines
++;
5568 /* Make sure opoint and the old restrictions
5569 float ahead of any new text just as point would. */
5570 if (opoint
>= before
)
5572 opoint
+= PT
- before
;
5573 opoint_byte
+= PT_BYTE
- before_byte
;
5575 if (old_begv
> before
)
5577 old_begv
+= PT
- before
;
5578 old_begv_byte
+= PT_BYTE
- before_byte
;
5580 if (old_zv
>= before
)
5582 old_zv
+= PT
- before
;
5583 old_zv_byte
+= PT_BYTE
- before_byte
;
5586 /* If the restriction isn't what it should be, set it. */
5587 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5588 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5591 current_buffer
->read_only
= old_read_only
;
5592 SET_PT_BOTH (opoint
, opoint_byte
);
5594 /* Handling the process output should not deactivate the mark. */
5595 Vdeactivate_mark
= odeactivate
;
5597 unbind_to (count
, Qnil
);
5601 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5603 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5604 This is intended for use by asynchronous process output filters and sentinels. */)
5607 return (waiting_for_user_input_p
? Qt
: Qnil
);
5610 /* Sending data to subprocess */
5612 jmp_buf send_process_frame
;
5613 Lisp_Object process_sent_to
;
5616 send_process_trap ()
5618 SIGNAL_THREAD_CHECK (SIGPIPE
);
5619 sigunblock (sigmask (SIGPIPE
));
5620 longjmp (send_process_frame
, 1);
5623 /* Send some data to process PROC.
5624 BUF is the beginning of the data; LEN is the number of characters.
5625 OBJECT is the Lisp object that the data comes from. If OBJECT is
5626 nil or t, it means that the data comes from C string.
5628 If OBJECT is not nil, the data is encoded by PROC's coding-system
5629 for encoding before it is sent.
5631 This function can evaluate Lisp code and can garbage collect. */
5634 send_process (proc
, buf
, len
, object
)
5635 volatile Lisp_Object proc
;
5636 unsigned char *volatile buf
;
5638 volatile Lisp_Object object
;
5640 /* Use volatile to protect variables from being clobbered by longjmp. */
5641 struct Lisp_Process
*p
= XPROCESS (proc
);
5643 struct coding_system
*coding
;
5644 struct gcpro gcpro1
;
5645 SIGTYPE (*volatile old_sigpipe
) ();
5649 if (p
->raw_status_new
)
5651 if (! EQ (p
->status
, Qrun
))
5652 error ("Process %s not running", SDATA (p
->name
));
5654 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5656 coding
= proc_encode_coding_system
[p
->outfd
];
5657 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5659 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5660 || (BUFFERP (object
)
5661 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5664 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5665 /* The coding system for encoding was changed to raw-text
5666 because we sent a unibyte text previously. Now we are
5667 sending a multibyte text, thus we must encode it by the
5668 original coding system specified for the current process. */
5669 setup_coding_system (p
->encode_coding_system
, coding
);
5670 coding
->src_multibyte
= 1;
5674 /* For sending a unibyte text, character code conversion should
5675 not take place but EOL conversion should. So, setup raw-text
5676 or one of the subsidiary if we have not yet done it. */
5677 if (CODING_REQUIRE_ENCODING (coding
))
5679 if (CODING_REQUIRE_FLUSHING (coding
))
5681 /* But, before changing the coding, we must flush out data. */
5682 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5683 send_process (proc
, "", 0, Qt
);
5684 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5686 setup_coding_system (raw_text_coding_system
5687 (Vlast_coding_system_used
),
5689 coding
->src_multibyte
= 0;
5692 coding
->dst_multibyte
= 0;
5694 if (CODING_REQUIRE_ENCODING (coding
))
5696 coding
->dst_object
= Qt
;
5697 if (BUFFERP (object
))
5699 int from_byte
, from
, to
;
5700 int save_pt
, save_pt_byte
;
5701 struct buffer
*cur
= current_buffer
;
5703 set_buffer_internal (XBUFFER (object
));
5704 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5706 from_byte
= PTR_BYTE_POS (buf
);
5707 from
= BYTE_TO_CHAR (from_byte
);
5708 to
= BYTE_TO_CHAR (from_byte
+ len
);
5709 TEMP_SET_PT_BOTH (from
, from_byte
);
5710 encode_coding_object (coding
, object
, from
, from_byte
,
5711 to
, from_byte
+ len
, Qt
);
5712 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5713 set_buffer_internal (cur
);
5715 else if (STRINGP (object
))
5717 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5718 SBYTES (object
), Qt
);
5722 coding
->dst_object
= make_unibyte_string (buf
, len
);
5723 coding
->produced
= len
;
5726 len
= coding
->produced
;
5727 object
= coding
->dst_object
;
5728 buf
= SDATA (object
);
5731 if (pty_max_bytes
== 0)
5733 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5734 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5735 if (pty_max_bytes
< 0)
5736 pty_max_bytes
= 250;
5738 pty_max_bytes
= 250;
5740 /* Deduct one, to leave space for the eof. */
5744 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5745 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5746 when returning with longjmp despite being declared volatile. */
5747 if (!setjmp (send_process_frame
))
5749 process_sent_to
= proc
;
5754 /* Send this batch, using one or more write calls. */
5757 int outfd
= p
->outfd
;
5758 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5759 #ifdef DATAGRAM_SOCKETS
5760 if (DATAGRAM_CHAN_P (outfd
))
5762 rv
= sendto (outfd
, (char *) buf
, this,
5763 0, datagram_address
[outfd
].sa
,
5764 datagram_address
[outfd
].len
);
5765 if (rv
< 0 && errno
== EMSGSIZE
)
5767 signal (SIGPIPE
, old_sigpipe
);
5768 report_file_error ("sending datagram",
5769 Fcons (proc
, Qnil
));
5775 rv
= emacs_write (outfd
, (char *) buf
, this);
5776 #ifdef ADAPTIVE_READ_BUFFERING
5777 if (p
->read_output_delay
> 0
5778 && p
->adaptive_read_buffering
== 1)
5780 p
->read_output_delay
= 0;
5781 process_output_delay_count
--;
5782 p
->read_output_skip
= 0;
5786 signal (SIGPIPE
, old_sigpipe
);
5792 || errno
== EWOULDBLOCK
5798 /* Buffer is full. Wait, accepting input;
5799 that may allow the program
5800 to finish doing output and read more. */
5804 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5805 /* A gross hack to work around a bug in FreeBSD.
5806 In the following sequence, read(2) returns
5810 write(2) 954 bytes, get EAGAIN
5811 read(2) 1024 bytes in process_read_output
5812 read(2) 11 bytes in process_read_output
5814 That is, read(2) returns more bytes than have
5815 ever been written successfully. The 1033 bytes
5816 read are the 1022 bytes written successfully
5817 after processing (for example with CRs added if
5818 the terminal is set up that way which it is
5819 here). The same bytes will be seen again in a
5820 later read(2), without the CRs. */
5822 if (errno
== EAGAIN
)
5825 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5827 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5829 /* Running filters might relocate buffers or strings.
5830 Arrange to relocate BUF. */
5831 if (BUFFERP (object
))
5832 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5833 else if (STRINGP (object
))
5834 offset
= buf
- SDATA (object
);
5836 #ifdef EMACS_HAS_USECS
5837 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5839 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5842 if (BUFFERP (object
))
5843 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5844 else if (STRINGP (object
))
5845 buf
= offset
+ SDATA (object
);
5850 /* This is a real error. */
5851 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5861 signal (SIGPIPE
, old_sigpipe
);
5862 proc
= process_sent_to
;
5863 p
= XPROCESS (proc
);
5864 p
->raw_status_new
= 0;
5865 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5866 p
->tick
= ++process_tick
;
5867 deactivate_process (proc
);
5868 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5874 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5876 doc
: /* Send current contents of region as input to PROCESS.
5877 PROCESS may be a process, a buffer, the name of a process or buffer, or
5878 nil, indicating the current buffer's process.
5879 Called from program, takes three arguments, PROCESS, START and END.
5880 If the region is more than 500 characters long,
5881 it is sent in several bunches. This may happen even for shorter regions.
5882 Output from processes can arrive in between bunches. */)
5883 (process
, start
, end
)
5884 Lisp_Object process
, start
, end
;
5889 proc
= get_process (process
);
5890 validate_region (&start
, &end
);
5892 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5893 move_gap (XINT (start
));
5895 start1
= CHAR_TO_BYTE (XINT (start
));
5896 end1
= CHAR_TO_BYTE (XINT (end
));
5897 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5898 Fcurrent_buffer ());
5903 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5905 doc
: /* Send PROCESS the contents of STRING as input.
5906 PROCESS may be a process, a buffer, the name of a process or buffer, or
5907 nil, indicating the current buffer's process.
5908 If STRING is more than 500 characters long,
5909 it is sent in several bunches. This may happen even for shorter strings.
5910 Output from processes can arrive in between bunches. */)
5912 Lisp_Object process
, string
;
5915 CHECK_STRING (string
);
5916 proc
= get_process (process
);
5917 send_process (proc
, SDATA (string
),
5918 SBYTES (string
), string
);
5922 /* Return the foreground process group for the tty/pty that
5923 the process P uses. */
5925 emacs_get_tty_pgrp (p
)
5926 struct Lisp_Process
*p
;
5931 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5934 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5935 master side. Try the slave side. */
5936 fd
= emacs_open (SDATA (p
->tty_name
), O_RDONLY
, 0);
5940 ioctl (fd
, TIOCGPGRP
, &gid
);
5944 #endif /* defined (TIOCGPGRP ) */
5949 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5950 Sprocess_running_child_p
, 0, 1, 0,
5951 doc
: /* Return t if PROCESS has given the terminal to a child.
5952 If the operating system does not make it possible to find out,
5953 return t unconditionally. */)
5955 Lisp_Object process
;
5957 /* Initialize in case ioctl doesn't exist or gives an error,
5958 in a way that will cause returning t. */
5961 struct Lisp_Process
*p
;
5963 proc
= get_process (process
);
5964 p
= XPROCESS (proc
);
5966 if (!EQ (p
->type
, Qreal
))
5967 error ("Process %s is not a subprocess",
5970 error ("Process %s is not active",
5973 gid
= emacs_get_tty_pgrp (p
);
5980 /* send a signal number SIGNO to PROCESS.
5981 If CURRENT_GROUP is t, that means send to the process group
5982 that currently owns the terminal being used to communicate with PROCESS.
5983 This is used for various commands in shell mode.
5984 If CURRENT_GROUP is lambda, that means send to the process group
5985 that currently owns the terminal, but only if it is NOT the shell itself.
5987 If NOMSG is zero, insert signal-announcements into process's buffers
5990 If we can, we try to signal PROCESS by sending control characters
5991 down the pty. This allows us to signal inferiors who have changed
5992 their uid, for which killpg would return an EPERM error. */
5995 process_send_signal (process
, signo
, current_group
, nomsg
)
5996 Lisp_Object process
;
5998 Lisp_Object current_group
;
6002 register struct Lisp_Process
*p
;
6006 proc
= get_process (process
);
6007 p
= XPROCESS (proc
);
6009 if (!EQ (p
->type
, Qreal
))
6010 error ("Process %s is not a subprocess",
6013 error ("Process %s is not active",
6017 current_group
= Qnil
;
6019 /* If we are using pgrps, get a pgrp number and make it negative. */
6020 if (NILP (current_group
))
6021 /* Send the signal to the shell's process group. */
6025 #ifdef SIGNALS_VIA_CHARACTERS
6026 /* If possible, send signals to the entire pgrp
6027 by sending an input character to it. */
6029 /* TERMIOS is the latest and bestest, and seems most likely to
6030 work. If the system has it, use it. */
6033 cc_t
*sig_char
= NULL
;
6035 tcgetattr (p
->infd
, &t
);
6040 sig_char
= &t
.c_cc
[VINTR
];
6044 sig_char
= &t
.c_cc
[VQUIT
];
6048 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
6049 sig_char
= &t
.c_cc
[VSWTCH
];
6051 sig_char
= &t
.c_cc
[VSUSP
];
6056 if (sig_char
&& *sig_char
!= CDISABLE
)
6058 send_process (proc
, sig_char
, 1, Qnil
);
6061 /* If we can't send the signal with a character,
6062 fall through and send it another way. */
6063 #else /* ! HAVE_TERMIOS */
6065 /* On Berkeley descendants, the following IOCTL's retrieve the
6066 current control characters. */
6067 #if defined (TIOCGLTC) && defined (TIOCGETC)
6075 ioctl (p
->infd
, TIOCGETC
, &c
);
6076 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
6079 ioctl (p
->infd
, TIOCGETC
, &c
);
6080 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
6084 ioctl (p
->infd
, TIOCGLTC
, &lc
);
6085 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
6087 #endif /* ! defined (SIGTSTP) */
6090 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6092 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
6099 ioctl (p
->infd
, TCGETA
, &t
);
6100 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
6103 ioctl (p
->infd
, TCGETA
, &t
);
6104 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6108 ioctl (p
->infd
, TCGETA
, &t
);
6109 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6111 #endif /* ! defined (SIGTSTP) */
6113 #else /* ! defined (TCGETA) */
6114 Your configuration files are messed up
.
6115 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6116 you'd better be using one of the alternatives above! */
6117 #endif /* ! defined (TCGETA) */
6118 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6119 /* In this case, the code above should alway return. */
6121 #endif /* ! defined HAVE_TERMIOS */
6123 /* The code above may fall through if it can't
6124 handle the signal. */
6125 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6128 /* Get the current pgrp using the tty itself, if we have that.
6129 Otherwise, use the pty to get the pgrp.
6130 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6131 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6132 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6133 His patch indicates that if TIOCGPGRP returns an error, then
6134 we should just assume that p->pid is also the process group id. */
6136 gid
= emacs_get_tty_pgrp (p
);
6139 /* If we can't get the information, assume
6140 the shell owns the tty. */
6143 /* It is not clear whether anything really can set GID to -1.
6144 Perhaps on some system one of those ioctls can or could do so.
6145 Or perhaps this is vestigial. */
6148 #else /* ! defined (TIOCGPGRP ) */
6149 /* Can't select pgrps on this system, so we know that
6150 the child itself heads the pgrp. */
6152 #endif /* ! defined (TIOCGPGRP ) */
6154 /* If current_group is lambda, and the shell owns the terminal,
6155 don't send any signal. */
6156 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6164 p
->raw_status_new
= 0;
6166 p
->tick
= ++process_tick
;
6169 status_notify (NULL
);
6170 redisplay_preserve_echo_area (13);
6173 #endif /* ! defined (SIGCONT) */
6177 flush_pending_output (p
->infd
);
6181 /* If we don't have process groups, send the signal to the immediate
6182 subprocess. That isn't really right, but it's better than any
6183 obvious alternative. */
6186 kill (p
->pid
, signo
);
6190 /* gid may be a pid, or minus a pgrp's number */
6192 if (!NILP (current_group
))
6194 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6195 EMACS_KILLPG (gid
, signo
);
6202 #else /* ! defined (TIOCSIGSEND) */
6203 EMACS_KILLPG (gid
, signo
);
6204 #endif /* ! defined (TIOCSIGSEND) */
6207 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6208 doc
: /* Interrupt process PROCESS.
6209 PROCESS may be a process, a buffer, or the name of a process or buffer.
6210 No arg or nil means current buffer's process.
6211 Second arg CURRENT-GROUP non-nil means send signal to
6212 the current process-group of the process's controlling terminal
6213 rather than to the process's own process group.
6214 If the process is a shell, this means interrupt current subjob
6215 rather than the shell.
6217 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6218 don't send the signal. */)
6219 (process
, current_group
)
6220 Lisp_Object process
, current_group
;
6222 process_send_signal (process
, SIGINT
, current_group
, 0);
6226 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6227 doc
: /* Kill process PROCESS. May be process or name of one.
6228 See function `interrupt-process' for more details on usage. */)
6229 (process
, current_group
)
6230 Lisp_Object process
, current_group
;
6232 process_send_signal (process
, SIGKILL
, current_group
, 0);
6236 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6237 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6238 See function `interrupt-process' for more details on usage. */)
6239 (process
, current_group
)
6240 Lisp_Object process
, current_group
;
6242 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6246 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6247 doc
: /* Stop process PROCESS. May be process or name of one.
6248 See function `interrupt-process' for more details on usage.
6249 If PROCESS is a network or serial process, inhibit handling of incoming
6251 (process
, current_group
)
6252 Lisp_Object process
, current_group
;
6255 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6257 struct Lisp_Process
*p
;
6259 p
= XPROCESS (process
);
6260 if (NILP (p
->command
)
6263 FD_CLR (p
->infd
, &input_wait_mask
);
6264 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6271 error ("No SIGTSTP support");
6273 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6278 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6279 doc
: /* Continue process PROCESS. May be process or name of one.
6280 See function `interrupt-process' for more details on usage.
6281 If PROCESS is a network or serial process, resume handling of incoming
6283 (process
, current_group
)
6284 Lisp_Object process
, current_group
;
6287 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6289 struct Lisp_Process
*p
;
6291 p
= XPROCESS (process
);
6292 if (EQ (p
->command
, Qt
)
6294 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6296 FD_SET (p
->infd
, &input_wait_mask
);
6297 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6299 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6300 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6303 tcflush (p
->infd
, TCIFLUSH
);
6311 process_send_signal (process
, SIGCONT
, current_group
, 0);
6313 error ("No SIGCONT support");
6318 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6319 2, 2, "sProcess (name or number): \nnSignal code: ",
6320 doc
: /* Send PROCESS the signal with code SIGCODE.
6321 PROCESS may also be a number specifying the process id of the
6322 process to signal; in this case, the process need not be a child of
6324 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6326 Lisp_Object process
, sigcode
;
6330 if (INTEGERP (process
))
6332 pid
= XINT (process
);
6336 if (FLOATP (process
))
6338 pid
= (pid_t
) XFLOAT_DATA (process
);
6342 if (STRINGP (process
))
6345 if (tem
= Fget_process (process
), NILP (tem
))
6347 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6354 process
= get_process (process
);
6359 CHECK_PROCESS (process
);
6360 pid
= XPROCESS (process
)->pid
;
6362 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6366 #define parse_signal(NAME, VALUE) \
6367 else if (!xstrcasecmp (name, NAME)) \
6368 XSETINT (sigcode, VALUE)
6370 if (INTEGERP (sigcode
))
6374 unsigned char *name
;
6376 CHECK_SYMBOL (sigcode
);
6377 name
= SDATA (SYMBOL_NAME (sigcode
));
6379 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6385 parse_signal ("usr1", SIGUSR1
);
6388 parse_signal ("usr2", SIGUSR2
);
6391 parse_signal ("term", SIGTERM
);
6394 parse_signal ("hup", SIGHUP
);
6397 parse_signal ("int", SIGINT
);
6400 parse_signal ("quit", SIGQUIT
);
6403 parse_signal ("ill", SIGILL
);
6406 parse_signal ("abrt", SIGABRT
);
6409 parse_signal ("emt", SIGEMT
);
6412 parse_signal ("kill", SIGKILL
);
6415 parse_signal ("fpe", SIGFPE
);
6418 parse_signal ("bus", SIGBUS
);
6421 parse_signal ("segv", SIGSEGV
);
6424 parse_signal ("sys", SIGSYS
);
6427 parse_signal ("pipe", SIGPIPE
);
6430 parse_signal ("alrm", SIGALRM
);
6433 parse_signal ("urg", SIGURG
);
6436 parse_signal ("stop", SIGSTOP
);
6439 parse_signal ("tstp", SIGTSTP
);
6442 parse_signal ("cont", SIGCONT
);
6445 parse_signal ("chld", SIGCHLD
);
6448 parse_signal ("ttin", SIGTTIN
);
6451 parse_signal ("ttou", SIGTTOU
);
6454 parse_signal ("io", SIGIO
);
6457 parse_signal ("xcpu", SIGXCPU
);
6460 parse_signal ("xfsz", SIGXFSZ
);
6463 parse_signal ("vtalrm", SIGVTALRM
);
6466 parse_signal ("prof", SIGPROF
);
6469 parse_signal ("winch", SIGWINCH
);
6472 parse_signal ("info", SIGINFO
);
6475 error ("Undefined signal name %s", name
);
6480 return make_number (kill (pid
, XINT (sigcode
)));
6483 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6484 doc
: /* Make PROCESS see end-of-file in its input.
6485 EOF comes after any text already sent to it.
6486 PROCESS may be a process, a buffer, the name of a process or buffer, or
6487 nil, indicating the current buffer's process.
6488 If PROCESS is a network connection, or is a process communicating
6489 through a pipe (as opposed to a pty), then you cannot send any more
6490 text to PROCESS after you call this function.
6491 If PROCESS is a serial process, wait until all output written to the
6492 process has been transmitted to the serial port. */)
6494 Lisp_Object process
;
6497 struct coding_system
*coding
;
6499 if (DATAGRAM_CONN_P (process
))
6502 proc
= get_process (process
);
6503 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6505 /* Make sure the process is really alive. */
6506 if (XPROCESS (proc
)->raw_status_new
)
6507 update_status (XPROCESS (proc
));
6508 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6509 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6511 if (CODING_REQUIRE_FLUSHING (coding
))
6513 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6514 send_process (proc
, "", 0, Qnil
);
6517 if (XPROCESS (proc
)->pty_flag
)
6518 send_process (proc
, "\004", 1, Qnil
);
6519 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6522 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6523 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6525 /* Do nothing on Windows because writes are blocking. */
6529 int old_outfd
, new_outfd
;
6531 #ifdef HAVE_SHUTDOWN
6532 /* If this is a network connection, or socketpair is used
6533 for communication with the subprocess, call shutdown to cause EOF.
6534 (In some old system, shutdown to socketpair doesn't work.
6535 Then we just can't win.) */
6536 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6537 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6538 shutdown (XPROCESS (proc
)->outfd
, 1);
6539 /* In case of socketpair, outfd == infd, so don't close it. */
6540 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6541 emacs_close (XPROCESS (proc
)->outfd
);
6542 #else /* not HAVE_SHUTDOWN */
6543 emacs_close (XPROCESS (proc
)->outfd
);
6544 #endif /* not HAVE_SHUTDOWN */
6545 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6548 old_outfd
= XPROCESS (proc
)->outfd
;
6550 if (!proc_encode_coding_system
[new_outfd
])
6551 proc_encode_coding_system
[new_outfd
]
6552 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6553 bcopy (proc_encode_coding_system
[old_outfd
],
6554 proc_encode_coding_system
[new_outfd
],
6555 sizeof (struct coding_system
));
6556 bzero (proc_encode_coding_system
[old_outfd
],
6557 sizeof (struct coding_system
));
6559 XPROCESS (proc
)->outfd
= new_outfd
;
6564 /* Kill all processes associated with `buffer'.
6565 If `buffer' is nil, kill all processes */
6568 kill_buffer_processes (buffer
)
6571 Lisp_Object tail
, proc
;
6573 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6575 proc
= XCDR (XCAR (tail
));
6577 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6579 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6580 Fdelete_process (proc
);
6581 else if (XPROCESS (proc
)->infd
>= 0)
6582 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6587 /* On receipt of a signal that a child status has changed, loop asking
6588 about children with changed statuses until the system says there
6591 All we do is change the status; we do not run sentinels or print
6592 notifications. That is saved for the next time keyboard input is
6593 done, in order to avoid timing errors.
6595 ** WARNING: this can be called during garbage collection.
6596 Therefore, it must not be fooled by the presence of mark bits in
6599 ** USG WARNING: Although it is not obvious from the documentation
6600 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6601 signal() before executing at least one wait(), otherwise the
6602 handler will be called again, resulting in an infinite loop. The
6603 relevant portion of the documentation reads "SIGCLD signals will be
6604 queued and the signal-catching function will be continually
6605 reentered until the queue is empty". Invoking signal() causes the
6606 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6609 ** Malloc WARNING: This should never call malloc either directly or
6610 indirectly; if it does, that is a bug */
6614 sigchld_handler (signo
)
6617 int old_errno
= errno
;
6619 register struct Lisp_Process
*p
;
6620 extern EMACS_TIME
*input_available_clear_time
;
6622 SIGNAL_THREAD_CHECK (signo
);
6633 #endif /* no WUNTRACED */
6634 /* Keep trying to get a status until we get a definitive result. */
6638 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6640 while (pid
< 0 && errno
== EINTR
);
6644 /* PID == 0 means no processes found, PID == -1 means a real
6645 failure. We have done all our job, so return. */
6652 #endif /* no WNOHANG */
6654 /* Find the process that signaled us, and record its status. */
6656 /* The process can have been deleted by Fdelete_process. */
6657 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6659 Lisp_Object xpid
= XCAR (tail
);
6660 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6661 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6663 XSETCAR (tail
, Qnil
);
6664 goto sigchld_end_of_loop
;
6668 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6670 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6672 proc
= XCDR (XCAR (tail
));
6673 p
= XPROCESS (proc
);
6674 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6679 /* Look for an asynchronous process whose pid hasn't been filled
6682 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6684 proc
= XCDR (XCAR (tail
));
6685 p
= XPROCESS (proc
);
6691 /* Change the status of the process that was found. */
6694 int clear_desc_flag
= 0;
6696 p
->tick
= ++process_tick
;
6698 p
->raw_status_new
= 1;
6700 /* If process has terminated, stop waiting for its output. */
6701 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6703 clear_desc_flag
= 1;
6705 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6706 if (clear_desc_flag
)
6708 FD_CLR (p
->infd
, &input_wait_mask
);
6709 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6712 /* Tell wait_reading_process_output that it needs to wake up and
6714 if (input_available_clear_time
)
6715 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6718 /* There was no asynchronous process found for that pid: we have
6719 a synchronous process. */
6722 synch_process_alive
= 0;
6724 /* Report the status of the synchronous process. */
6726 synch_process_retcode
= WRETCODE (w
);
6727 else if (WIFSIGNALED (w
))
6728 synch_process_termsig
= WTERMSIG (w
);
6730 /* Tell wait_reading_process_output that it needs to wake up and
6732 if (input_available_clear_time
)
6733 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6736 sigchld_end_of_loop
:
6739 /* On some systems, we must return right away.
6740 If any more processes want to signal us, we will
6742 Otherwise (on systems that have WNOHANG), loop around
6743 to use up all the processes that have something to tell us. */
6744 #if (defined WINDOWSNT \
6745 || (defined USG && !defined GNU_LINUX \
6746 && !(defined HPUX && defined WNOHANG)))
6749 #endif /* USG, but not HPUX with WNOHANG */
6752 #endif /* SIGCHLD */
6756 exec_sentinel_unwind (data
)
6759 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6764 exec_sentinel_error_handler (error
)
6767 cmd_error_internal (error
, "error in process sentinel: ");
6769 update_echo_area ();
6770 Fsleep_for (make_number (2), Qnil
);
6775 exec_sentinel (proc
, reason
)
6776 Lisp_Object proc
, reason
;
6778 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6779 register struct Lisp_Process
*p
= XPROCESS (proc
);
6780 int count
= SPECPDL_INDEX ();
6781 int outer_running_asynch_code
= running_asynch_code
;
6782 int waiting
= waiting_for_user_input_p
;
6784 if (inhibit_sentinels
)
6787 /* No need to gcpro these, because all we do with them later
6788 is test them for EQness, and none of them should be a string. */
6789 odeactivate
= Vdeactivate_mark
;
6790 XSETBUFFER (obuffer
, current_buffer
);
6791 okeymap
= current_buffer
->keymap
;
6793 /* There's no good reason to let sentinels change the current
6794 buffer, and many callers of accept-process-output, sit-for, and
6795 friends don't expect current-buffer to be changed from under them. */
6796 record_unwind_protect (set_buffer_if_live
, Fcurrent_buffer ());
6798 sentinel
= p
->sentinel
;
6799 if (NILP (sentinel
))
6802 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6803 assure that it gets restored no matter how the sentinel exits. */
6805 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6806 /* Inhibit quit so that random quits don't screw up a running filter. */
6807 specbind (Qinhibit_quit
, Qt
);
6808 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6810 /* In case we get recursively called,
6811 and we already saved the match data nonrecursively,
6812 save the same match data in safely recursive fashion. */
6813 if (outer_running_asynch_code
)
6816 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6817 restore_search_regs ();
6818 record_unwind_save_match_data ();
6819 Fset_match_data (tem
, Qt
);
6822 /* For speed, if a search happens within this code,
6823 save the match data in a special nonrecursive fashion. */
6824 running_asynch_code
= 1;
6826 internal_condition_case_1 (read_process_output_call
,
6828 Fcons (proc
, Fcons (reason
, Qnil
))),
6829 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6830 exec_sentinel_error_handler
);
6832 /* If we saved the match data nonrecursively, restore it now. */
6833 restore_search_regs ();
6834 running_asynch_code
= outer_running_asynch_code
;
6836 Vdeactivate_mark
= odeactivate
;
6838 /* Restore waiting_for_user_input_p as it was
6839 when we were called, in case the filter clobbered it. */
6840 waiting_for_user_input_p
= waiting
;
6843 if (! EQ (Fcurrent_buffer (), obuffer
)
6844 || ! EQ (current_buffer
->keymap
, okeymap
))
6846 /* But do it only if the caller is actually going to read events.
6847 Otherwise there's no need to make him wake up, and it could
6848 cause trouble (for example it would make sit_for return). */
6849 if (waiting_for_user_input_p
== -1)
6850 record_asynch_buffer_change ();
6852 unbind_to (count
, Qnil
);
6855 /* Report all recent events of a change in process status
6856 (either run the sentinel or output a message).
6857 This is usually done while Emacs is waiting for keyboard input
6858 but can be done at other times. */
6861 status_notify (deleting_process
)
6862 struct Lisp_Process
*deleting_process
;
6864 register Lisp_Object proc
, buffer
;
6865 Lisp_Object tail
, msg
;
6866 struct gcpro gcpro1
, gcpro2
;
6870 /* We need to gcpro tail; if read_process_output calls a filter
6871 which deletes a process and removes the cons to which tail points
6872 from Vprocess_alist, and then causes a GC, tail is an unprotected
6876 /* Set this now, so that if new processes are created by sentinels
6877 that we run, we get called again to handle their status changes. */
6878 update_tick
= process_tick
;
6880 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6883 register struct Lisp_Process
*p
;
6885 proc
= Fcdr (XCAR (tail
));
6886 p
= XPROCESS (proc
);
6888 if (p
->tick
!= p
->update_tick
)
6890 p
->update_tick
= p
->tick
;
6892 /* If process is still active, read any output that remains. */
6893 while (! EQ (p
->filter
, Qt
)
6894 && ! EQ (p
->status
, Qconnect
)
6895 && ! EQ (p
->status
, Qlisten
)
6896 /* Network or serial process not stopped: */
6897 && ! EQ (p
->command
, Qt
)
6899 && p
!= deleting_process
6900 && read_process_output (proc
, p
->infd
) > 0);
6904 /* Get the text to use for the message. */
6905 if (p
->raw_status_new
)
6907 msg
= status_message (p
);
6909 /* If process is terminated, deactivate it or delete it. */
6911 if (CONSP (p
->status
))
6912 symbol
= XCAR (p
->status
);
6914 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6915 || EQ (symbol
, Qclosed
))
6917 if (delete_exited_processes
)
6918 remove_process (proc
);
6920 deactivate_process (proc
);
6923 /* The actions above may have further incremented p->tick.
6924 So set p->update_tick again
6925 so that an error in the sentinel will not cause
6926 this code to be run again. */
6927 p
->update_tick
= p
->tick
;
6928 /* Now output the message suitably. */
6929 if (!NILP (p
->sentinel
))
6930 exec_sentinel (proc
, msg
);
6931 /* Don't bother with a message in the buffer
6932 when a process becomes runnable. */
6933 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6936 struct buffer
*old
= current_buffer
;
6937 int opoint
, opoint_byte
;
6938 int before
, before_byte
;
6940 /* Avoid error if buffer is deleted
6941 (probably that's why the process is dead, too) */
6942 if (NILP (XBUFFER (buffer
)->name
))
6944 Fset_buffer (buffer
);
6947 opoint_byte
= PT_BYTE
;
6948 /* Insert new output into buffer
6949 at the current end-of-output marker,
6950 thus preserving logical ordering of input and output. */
6951 if (XMARKER (p
->mark
)->buffer
)
6952 Fgoto_char (p
->mark
);
6954 SET_PT_BOTH (ZV
, ZV_BYTE
);
6957 before_byte
= PT_BYTE
;
6959 tem
= current_buffer
->read_only
;
6960 current_buffer
->read_only
= Qnil
;
6961 insert_string ("\nProcess ");
6962 Finsert (1, &p
->name
);
6963 insert_string (" ");
6965 current_buffer
->read_only
= tem
;
6966 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6968 if (opoint
>= before
)
6969 SET_PT_BOTH (opoint
+ (PT
- before
),
6970 opoint_byte
+ (PT_BYTE
- before_byte
));
6972 SET_PT_BOTH (opoint
, opoint_byte
);
6974 set_buffer_internal (old
);
6979 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6984 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6985 Sset_process_coding_system
, 1, 3, 0,
6986 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6987 DECODING will be used to decode subprocess output and ENCODING to
6988 encode subprocess input. */)
6989 (process
, decoding
, encoding
)
6990 register Lisp_Object process
, decoding
, encoding
;
6992 register struct Lisp_Process
*p
;
6994 CHECK_PROCESS (process
);
6995 p
= XPROCESS (process
);
6997 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6999 error ("Output file descriptor of %s closed", SDATA (p
->name
));
7000 Fcheck_coding_system (decoding
);
7001 Fcheck_coding_system (encoding
);
7002 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7003 p
->decode_coding_system
= decoding
;
7004 p
->encode_coding_system
= encoding
;
7005 setup_process_coding_systems (process
);
7010 DEFUN ("process-coding-system",
7011 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7012 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7014 register Lisp_Object process
;
7016 CHECK_PROCESS (process
);
7017 return Fcons (XPROCESS (process
)->decode_coding_system
,
7018 XPROCESS (process
)->encode_coding_system
);
7021 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7022 Sset_process_filter_multibyte
, 2, 2, 0,
7023 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7024 If FLAG is non-nil, the filter is given multibyte strings.
7025 If FLAG is nil, the filter is given unibyte strings. In this case,
7026 all character code conversion except for end-of-line conversion is
7029 Lisp_Object process
, flag
;
7031 register struct Lisp_Process
*p
;
7033 CHECK_PROCESS (process
);
7034 p
= XPROCESS (process
);
7036 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
7037 setup_process_coding_systems (process
);
7042 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7043 Sprocess_filter_multibyte_p
, 1, 1, 0,
7044 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7046 Lisp_Object process
;
7048 register struct Lisp_Process
*p
;
7049 struct coding_system
*coding
;
7051 CHECK_PROCESS (process
);
7052 p
= XPROCESS (process
);
7053 coding
= proc_decode_coding_system
[p
->infd
];
7054 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7059 /* Add DESC to the set of keyboard input descriptors. */
7062 add_keyboard_wait_descriptor (desc
)
7065 FD_SET (desc
, &input_wait_mask
);
7066 FD_SET (desc
, &non_process_wait_mask
);
7067 if (desc
> max_keyboard_desc
)
7068 max_keyboard_desc
= desc
;
7071 static int add_gpm_wait_descriptor_called_flag
;
7074 add_gpm_wait_descriptor (desc
)
7077 if (! add_gpm_wait_descriptor_called_flag
)
7078 FD_CLR (0, &input_wait_mask
);
7079 add_gpm_wait_descriptor_called_flag
= 1;
7080 FD_SET (desc
, &input_wait_mask
);
7081 FD_SET (desc
, &gpm_wait_mask
);
7082 if (desc
> max_gpm_desc
)
7083 max_gpm_desc
= desc
;
7086 /* From now on, do not expect DESC to give keyboard input. */
7089 delete_keyboard_wait_descriptor (desc
)
7093 int lim
= max_keyboard_desc
;
7095 FD_CLR (desc
, &input_wait_mask
);
7096 FD_CLR (desc
, &non_process_wait_mask
);
7098 if (desc
== max_keyboard_desc
)
7099 for (fd
= 0; fd
< lim
; fd
++)
7100 if (FD_ISSET (fd
, &input_wait_mask
)
7101 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7102 && !FD_ISSET (fd
, &gpm_wait_mask
))
7103 max_keyboard_desc
= fd
;
7107 delete_gpm_wait_descriptor (desc
)
7111 int lim
= max_gpm_desc
;
7113 FD_CLR (desc
, &input_wait_mask
);
7114 FD_CLR (desc
, &non_process_wait_mask
);
7116 if (desc
== max_gpm_desc
)
7117 for (fd
= 0; fd
< lim
; fd
++)
7118 if (FD_ISSET (fd
, &input_wait_mask
)
7119 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7120 && !FD_ISSET (fd
, &non_process_wait_mask
))
7124 /* Return nonzero if *MASK has a bit set
7125 that corresponds to one of the keyboard input descriptors. */
7128 keyboard_bit_set (mask
)
7133 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
7134 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7135 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7141 /* Enumeration of and access to system processes a-la ps(1). */
7143 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7145 doc
: /* Return a list of numerical process IDs of all running processes.
7146 If this functionality is unsupported, return nil.
7148 See `process-attributes' for getting attributes of a process given its ID. */)
7151 return list_system_processes ();
7154 DEFUN ("process-attributes", Fprocess_attributes
,
7155 Sprocess_attributes
, 1, 1, 0,
7156 doc
: /* Return attributes of the process given by its PID, a number.
7158 Value is an alist where each element is a cons cell of the form
7162 If this functionality is unsupported, the value is nil.
7164 See `list-system-processes' for getting a list of all process IDs.
7166 The KEYs of the attributes that this function may return are listed
7167 below, together with the type of the associated VALUE (in parentheses).
7168 Not all platforms support all of these attributes; unsupported
7169 attributes will not appear in the returned alist.
7170 Unless explicitly indicated otherwise, numbers can have either
7171 integer or floating point values.
7173 euid -- Effective user User ID of the process (number)
7174 user -- User name corresponding to euid (string)
7175 egid -- Effective user Group ID of the process (number)
7176 group -- Group name corresponding to egid (string)
7177 comm -- Command name (executable name only) (string)
7178 state -- Process state code, such as "S", "R", or "T" (string)
7179 ppid -- Parent process ID (number)
7180 pgrp -- Process group ID (number)
7181 sess -- Session ID, i.e. process ID of session leader (number)
7182 ttname -- Controlling tty name (string)
7183 tpgid -- ID of foreground process group on the process's tty (number)
7184 minflt -- number of minor page faults (number)
7185 majflt -- number of major page faults (number)
7186 cminflt -- cumulative number of minor page faults (number)
7187 cmajflt -- cumulative number of major page faults (number)
7188 utime -- user time used by the process, in the (HIGH LOW USEC) format
7189 stime -- system time used by the process, in the (HIGH LOW USEC) format
7190 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7191 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7192 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7193 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7194 pri -- priority of the process (number)
7195 nice -- nice value of the process (number)
7196 thcount -- process thread count (number)
7197 start -- time the process started, in the (HIGH LOW USEC) format
7198 vsize -- virtual memory size of the process in KB's (number)
7199 rss -- resident set size of the process in KB's (number)
7200 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7201 pcpu -- percents of CPU time used by the process (floating-point number)
7202 pmem -- percents of total physical memory used by process's resident set
7203 (floating-point number)
7204 args -- command line which invoked the process (string). */)
7209 return system_process_attributes (pid
);
7217 inhibit_sentinels
= 0;
7221 if (! noninteractive
|| initialized
)
7223 signal (SIGCHLD
, sigchld_handler
);
7226 FD_ZERO (&input_wait_mask
);
7227 FD_ZERO (&non_keyboard_wait_mask
);
7228 FD_ZERO (&non_process_wait_mask
);
7229 max_process_desc
= 0;
7231 #ifdef NON_BLOCKING_CONNECT
7232 FD_ZERO (&connect_wait_mask
);
7233 num_pending_connects
= 0;
7236 #ifdef ADAPTIVE_READ_BUFFERING
7237 process_output_delay_count
= 0;
7238 process_output_skip
= 0;
7241 /* Don't do this, it caused infinite select loops. The display
7242 method should call add_keyboard_wait_descriptor on stdin if it
7245 FD_SET (0, &input_wait_mask
);
7248 Vprocess_alist
= Qnil
;
7250 deleted_pid_list
= Qnil
;
7252 for (i
= 0; i
< MAXDESC
; i
++)
7254 chan_process
[i
] = Qnil
;
7255 proc_buffered_char
[i
] = -1;
7257 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7258 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7259 #ifdef DATAGRAM_SOCKETS
7260 bzero (datagram_address
, sizeof datagram_address
);
7265 Lisp_Object subfeatures
= Qnil
;
7266 const struct socket_options
*sopt
;
7268 #define ADD_SUBFEATURE(key, val) \
7269 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7271 #ifdef NON_BLOCKING_CONNECT
7272 ADD_SUBFEATURE (QCnowait
, Qt
);
7274 #ifdef DATAGRAM_SOCKETS
7275 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7277 #ifdef HAVE_SEQPACKET
7278 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7280 #ifdef HAVE_LOCAL_SOCKETS
7281 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7283 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7285 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7287 #ifdef HAVE_GETSOCKNAME
7288 ADD_SUBFEATURE (QCservice
, Qt
);
7290 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7291 ADD_SUBFEATURE (QCserver
, Qt
);
7294 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7295 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7297 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7299 #endif /* HAVE_SOCKETS */
7301 #if defined (DARWIN_OS)
7302 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7303 processes. As such, we only change the default value. */
7306 char *release
= get_operating_system_release();
7307 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7308 && release
[1] == '.')) {
7309 Vprocess_connection_type
= Qnil
;
7318 Qprocessp
= intern_c_string ("processp");
7319 staticpro (&Qprocessp
);
7320 Qrun
= intern_c_string ("run");
7322 Qstop
= intern_c_string ("stop");
7324 Qsignal
= intern_c_string ("signal");
7325 staticpro (&Qsignal
);
7327 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7330 Qexit = intern_c_string ("exit");
7331 staticpro (&Qexit); */
7333 Qopen
= intern_c_string ("open");
7335 Qclosed
= intern_c_string ("closed");
7336 staticpro (&Qclosed
);
7337 Qconnect
= intern_c_string ("connect");
7338 staticpro (&Qconnect
);
7339 Qfailed
= intern_c_string ("failed");
7340 staticpro (&Qfailed
);
7341 Qlisten
= intern_c_string ("listen");
7342 staticpro (&Qlisten
);
7343 Qlocal
= intern_c_string ("local");
7344 staticpro (&Qlocal
);
7345 Qipv4
= intern_c_string ("ipv4");
7348 Qipv6
= intern_c_string ("ipv6");
7351 Qdatagram
= intern_c_string ("datagram");
7352 staticpro (&Qdatagram
);
7353 Qseqpacket
= intern_c_string ("seqpacket");
7354 staticpro (&Qseqpacket
);
7356 QCport
= intern_c_string (":port");
7357 staticpro (&QCport
);
7358 QCspeed
= intern_c_string (":speed");
7359 staticpro (&QCspeed
);
7360 QCprocess
= intern_c_string (":process");
7361 staticpro (&QCprocess
);
7363 QCbytesize
= intern_c_string (":bytesize");
7364 staticpro (&QCbytesize
);
7365 QCstopbits
= intern_c_string (":stopbits");
7366 staticpro (&QCstopbits
);
7367 QCparity
= intern_c_string (":parity");
7368 staticpro (&QCparity
);
7369 Qodd
= intern_c_string ("odd");
7371 Qeven
= intern_c_string ("even");
7373 QCflowcontrol
= intern_c_string (":flowcontrol");
7374 staticpro (&QCflowcontrol
);
7375 Qhw
= intern_c_string ("hw");
7377 Qsw
= intern_c_string ("sw");
7379 QCsummary
= intern_c_string (":summary");
7380 staticpro (&QCsummary
);
7382 Qreal
= intern_c_string ("real");
7384 Qnetwork
= intern_c_string ("network");
7385 staticpro (&Qnetwork
);
7386 Qserial
= intern_c_string ("serial");
7387 staticpro (&Qserial
);
7389 QCname
= intern_c_string (":name");
7390 staticpro (&QCname
);
7391 QCbuffer
= intern_c_string (":buffer");
7392 staticpro (&QCbuffer
);
7393 QChost
= intern_c_string (":host");
7394 staticpro (&QChost
);
7395 QCservice
= intern_c_string (":service");
7396 staticpro (&QCservice
);
7397 QCtype
= intern_c_string (":type");
7398 staticpro (&QCtype
);
7399 QClocal
= intern_c_string (":local");
7400 staticpro (&QClocal
);
7401 QCremote
= intern_c_string (":remote");
7402 staticpro (&QCremote
);
7403 QCcoding
= intern_c_string (":coding");
7404 staticpro (&QCcoding
);
7405 QCserver
= intern_c_string (":server");
7406 staticpro (&QCserver
);
7407 QCnowait
= intern_c_string (":nowait");
7408 staticpro (&QCnowait
);
7409 QCsentinel
= intern_c_string (":sentinel");
7410 staticpro (&QCsentinel
);
7411 QClog
= intern_c_string (":log");
7413 QCnoquery
= intern_c_string (":noquery");
7414 staticpro (&QCnoquery
);
7415 QCstop
= intern_c_string (":stop");
7416 staticpro (&QCstop
);
7417 QCoptions
= intern_c_string (":options");
7418 staticpro (&QCoptions
);
7419 QCplist
= intern_c_string (":plist");
7420 staticpro (&QCplist
);
7422 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7423 staticpro (&Qlast_nonmenu_event
);
7425 staticpro (&Vprocess_alist
);
7427 staticpro (&deleted_pid_list
);
7430 Qeuid
= intern_c_string ("euid");
7432 Qegid
= intern_c_string ("egid");
7434 Quser
= intern_c_string ("user");
7436 Qgroup
= intern_c_string ("group");
7437 staticpro (&Qgroup
);
7438 Qcomm
= intern_c_string ("comm");
7440 Qstate
= intern_c_string ("state");
7441 staticpro (&Qstate
);
7442 Qppid
= intern_c_string ("ppid");
7444 Qpgrp
= intern_c_string ("pgrp");
7446 Qsess
= intern_c_string ("sess");
7448 Qttname
= intern_c_string ("ttname");
7449 staticpro (&Qttname
);
7450 Qtpgid
= intern_c_string ("tpgid");
7451 staticpro (&Qtpgid
);
7452 Qminflt
= intern_c_string ("minflt");
7453 staticpro (&Qminflt
);
7454 Qmajflt
= intern_c_string ("majflt");
7455 staticpro (&Qmajflt
);
7456 Qcminflt
= intern_c_string ("cminflt");
7457 staticpro (&Qcminflt
);
7458 Qcmajflt
= intern_c_string ("cmajflt");
7459 staticpro (&Qcmajflt
);
7460 Qutime
= intern_c_string ("utime");
7461 staticpro (&Qutime
);
7462 Qstime
= intern_c_string ("stime");
7463 staticpro (&Qstime
);
7464 Qtime
= intern_c_string ("time");
7466 Qcutime
= intern_c_string ("cutime");
7467 staticpro (&Qcutime
);
7468 Qcstime
= intern_c_string ("cstime");
7469 staticpro (&Qcstime
);
7470 Qctime
= intern_c_string ("ctime");
7471 staticpro (&Qctime
);
7472 Qpri
= intern_c_string ("pri");
7474 Qnice
= intern_c_string ("nice");
7476 Qthcount
= intern_c_string ("thcount");
7477 staticpro (&Qthcount
);
7478 Qstart
= intern_c_string ("start");
7479 staticpro (&Qstart
);
7480 Qvsize
= intern_c_string ("vsize");
7481 staticpro (&Qvsize
);
7482 Qrss
= intern_c_string ("rss");
7484 Qetime
= intern_c_string ("etime");
7485 staticpro (&Qetime
);
7486 Qpcpu
= intern_c_string ("pcpu");
7488 Qpmem
= intern_c_string ("pmem");
7490 Qargs
= intern_c_string ("args");
7493 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7494 doc
: /* *Non-nil means delete processes immediately when they exit.
7495 A value of nil means don't delete them until `list-processes' is run. */);
7497 delete_exited_processes
= 1;
7499 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7500 doc
: /* Control type of device used to communicate with subprocesses.
7501 Values are nil to use a pipe, or t or `pty' to use a pty.
7502 The value has no effect if the system has no ptys or if all ptys are busy:
7503 then a pipe is used in any case.
7504 The value takes effect when `start-process' is called. */);
7505 Vprocess_connection_type
= Qt
;
7507 #ifdef ADAPTIVE_READ_BUFFERING
7508 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7509 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7510 On some systems, when Emacs reads the output from a subprocess, the output data
7511 is read in very small blocks, potentially resulting in very poor performance.
7512 This behavior can be remedied to some extent by setting this variable to a
7513 non-nil value, as it will automatically delay reading from such processes, to
7514 allow them to produce more output before Emacs tries to read it.
7515 If the value is t, the delay is reset after each write to the process; any other
7516 non-nil value means that the delay is not reset on write.
7517 The variable takes effect when `start-process' is called. */);
7518 Vprocess_adaptive_read_buffering
= Qt
;
7521 defsubr (&Sprocessp
);
7522 defsubr (&Sget_process
);
7523 defsubr (&Sget_buffer_process
);
7524 defsubr (&Sdelete_process
);
7525 defsubr (&Sprocess_status
);
7526 defsubr (&Sprocess_exit_status
);
7527 defsubr (&Sprocess_id
);
7528 defsubr (&Sprocess_name
);
7529 defsubr (&Sprocess_tty_name
);
7530 defsubr (&Sprocess_command
);
7531 defsubr (&Sset_process_buffer
);
7532 defsubr (&Sprocess_buffer
);
7533 defsubr (&Sprocess_mark
);
7534 defsubr (&Sset_process_filter
);
7535 defsubr (&Sprocess_filter
);
7536 defsubr (&Sset_process_sentinel
);
7537 defsubr (&Sprocess_sentinel
);
7538 defsubr (&Sset_process_window_size
);
7539 defsubr (&Sset_process_inherit_coding_system_flag
);
7540 defsubr (&Sprocess_inherit_coding_system_flag
);
7541 defsubr (&Sset_process_query_on_exit_flag
);
7542 defsubr (&Sprocess_query_on_exit_flag
);
7543 defsubr (&Sprocess_contact
);
7544 defsubr (&Sprocess_plist
);
7545 defsubr (&Sset_process_plist
);
7546 defsubr (&Slist_processes
);
7547 defsubr (&Sprocess_list
);
7548 defsubr (&Sstart_process
);
7550 defsubr (&Sserial_process_configure
);
7551 defsubr (&Smake_serial_process
);
7552 #endif /* HAVE_SERIAL */
7554 defsubr (&Sset_network_process_option
);
7555 defsubr (&Smake_network_process
);
7556 defsubr (&Sformat_network_address
);
7557 #endif /* HAVE_SOCKETS */
7558 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7560 defsubr (&Snetwork_interface_list
);
7562 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7563 defsubr (&Snetwork_interface_info
);
7565 #endif /* HAVE_SOCKETS ... */
7566 #ifdef DATAGRAM_SOCKETS
7567 defsubr (&Sprocess_datagram_address
);
7568 defsubr (&Sset_process_datagram_address
);
7570 defsubr (&Saccept_process_output
);
7571 defsubr (&Sprocess_send_region
);
7572 defsubr (&Sprocess_send_string
);
7573 defsubr (&Sinterrupt_process
);
7574 defsubr (&Skill_process
);
7575 defsubr (&Squit_process
);
7576 defsubr (&Sstop_process
);
7577 defsubr (&Scontinue_process
);
7578 defsubr (&Sprocess_running_child_p
);
7579 defsubr (&Sprocess_send_eof
);
7580 defsubr (&Ssignal_process
);
7581 defsubr (&Swaiting_for_user_input_p
);
7582 defsubr (&Sprocess_type
);
7583 defsubr (&Sset_process_coding_system
);
7584 defsubr (&Sprocess_coding_system
);
7585 defsubr (&Sset_process_filter_multibyte
);
7586 defsubr (&Sprocess_filter_multibyte_p
);
7587 defsubr (&Slist_system_processes
);
7588 defsubr (&Sprocess_attributes
);
7592 #else /* not subprocesses */
7594 #include <sys/types.h>
7596 #include <sys/stat.h>
7600 #ifdef HAVE_UNISTD_H
7605 #include "systime.h"
7606 #include "character.h"
7608 #include "termopts.h"
7609 #include "sysselect.h"
7611 extern int frame_garbaged
;
7613 extern EMACS_TIME
timer_check ();
7614 extern int timers_run
;
7616 Lisp_Object QCtype
, QCname
;
7618 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
7619 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
7620 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
7621 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
7623 /* As described above, except assuming that there are no subprocesses:
7625 Wait for timeout to elapse and/or keyboard input to be available.
7628 timeout in seconds, or
7629 zero for no limit, or
7630 -1 means gobble data immediately available but don't wait for any.
7632 read_kbd is a Lisp_Object:
7633 0 to ignore keyboard input, or
7634 1 to return when input is available, or
7635 -1 means caller will actually read the input, so don't throw to
7638 see full version for other parameters. We know that wait_proc will
7639 always be NULL, since `subprocesses' isn't defined.
7641 do_display != 0 means redisplay should be done to show subprocess
7642 output that arrives.
7644 Return true if we received input from any process. */
7647 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7648 wait_for_cell
, wait_proc
, just_wait_proc
)
7649 int time_limit
, microsecs
, read_kbd
, do_display
;
7650 Lisp_Object wait_for_cell
;
7651 struct Lisp_Process
*wait_proc
;
7655 EMACS_TIME end_time
, timeout
;
7656 SELECT_TYPE waitchannels
;
7659 /* What does time_limit really mean? */
7660 if (time_limit
|| microsecs
)
7662 EMACS_GET_TIME (end_time
);
7663 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7664 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7667 /* Turn off periodic alarms (in case they are in use)
7668 and then turn off any other atimers,
7669 because the select emulator uses alarms. */
7671 turn_on_atimers (0);
7675 int timeout_reduced_for_timers
= 0;
7677 /* If calling from keyboard input, do not quit
7678 since we want to return C-g as an input character.
7679 Otherwise, do pending quit if requested. */
7683 /* Exit now if the cell we're waiting for became non-nil. */
7684 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7687 /* Compute time from now till when time limit is up */
7688 /* Exit if already run out */
7689 if (time_limit
== -1)
7691 /* -1 specified for timeout means
7692 gobble output available now
7693 but don't wait at all. */
7695 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7697 else if (time_limit
|| microsecs
)
7699 EMACS_GET_TIME (timeout
);
7700 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7701 if (EMACS_TIME_NEG_P (timeout
))
7706 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7709 /* If our caller will not immediately handle keyboard events,
7710 run timer events directly.
7711 (Callers that will immediately read keyboard events
7712 call timer_delay on their own.) */
7713 if (NILP (wait_for_cell
))
7715 EMACS_TIME timer_delay
;
7719 int old_timers_run
= timers_run
;
7720 timer_delay
= timer_check (1);
7721 if (timers_run
!= old_timers_run
&& do_display
)
7722 /* We must retry, since a timer may have requeued itself
7723 and that could alter the time delay. */
7724 redisplay_preserve_echo_area (14);
7728 while (!detect_input_pending ());
7730 /* If there is unread keyboard input, also return. */
7732 && requeued_events_pending_p ())
7735 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7737 EMACS_TIME difference
;
7738 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7739 if (EMACS_TIME_NEG_P (difference
))
7741 timeout
= timer_delay
;
7742 timeout_reduced_for_timers
= 1;
7747 /* Cause C-g and alarm signals to take immediate action,
7748 and cause input available signals to zero out timeout. */
7750 set_waiting_for_input (&timeout
);
7752 /* Wait till there is something to do. */
7754 if (! read_kbd
&& NILP (wait_for_cell
))
7755 FD_ZERO (&waitchannels
);
7757 FD_SET (0, &waitchannels
);
7759 /* If a frame has been newly mapped and needs updating,
7760 reprocess its display stuff. */
7761 if (frame_garbaged
&& do_display
)
7763 clear_waiting_for_input ();
7764 redisplay_preserve_echo_area (15);
7766 set_waiting_for_input (&timeout
);
7769 if (read_kbd
&& detect_input_pending ())
7772 FD_ZERO (&waitchannels
);
7775 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7780 /* Make C-g and alarm signals set flags again */
7781 clear_waiting_for_input ();
7783 /* If we woke up due to SIGWINCH, actually change size now. */
7784 do_pending_window_change (0);
7786 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7787 /* We waited the full specified time, so return now. */
7792 /* If the system call was interrupted, then go around the
7794 if (xerrno
== EINTR
)
7795 FD_ZERO (&waitchannels
);
7797 error ("select error: %s", emacs_strerror (xerrno
));
7800 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7801 /* System sometimes fails to deliver SIGIO. */
7802 kill (getpid (), SIGIO
);
7805 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7806 kill (getpid (), SIGIO
);
7809 /* Check for keyboard input */
7812 && detect_input_pending_run_timers (do_display
))
7814 swallow_events (do_display
);
7815 if (detect_input_pending_run_timers (do_display
))
7819 /* If there is unread keyboard input, also return. */
7821 && requeued_events_pending_p ())
7824 /* If wait_for_cell. check for keyboard input
7825 but don't run any timers.
7826 ??? (It seems wrong to me to check for keyboard
7827 input at all when wait_for_cell, but the code
7828 has been this way since July 1994.
7829 Try changing this after version 19.31.) */
7830 if (! NILP (wait_for_cell
)
7831 && detect_input_pending ())
7833 swallow_events (do_display
);
7834 if (detect_input_pending ())
7838 /* Exit now if the cell we're waiting for became non-nil. */
7839 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7849 /* Don't confuse make-docfile by having two doc strings for this function.
7850 make-docfile does not pay attention to #if, for good reason! */
7851 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7854 register Lisp_Object name
;
7859 /* Don't confuse make-docfile by having two doc strings for this function.
7860 make-docfile does not pay attention to #if, for good reason! */
7861 DEFUN ("process-inherit-coding-system-flag",
7862 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7866 register Lisp_Object process
;
7868 /* Ignore the argument and return the value of
7869 inherit-process-coding-system. */
7870 return inherit_process_coding_system
? Qt
: Qnil
;
7873 /* Kill all processes associated with `buffer'.
7874 If `buffer' is nil, kill all processes.
7875 Since we have no subprocesses, this does nothing. */
7878 kill_buffer_processes (buffer
)
7883 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7885 doc
: /* Return a list of numerical process IDs of all running processes.
7886 If this functionality is unsupported, return nil.
7888 See `process-attributes' for getting attributes of a process given its ID. */)
7891 return list_system_processes ();
7894 DEFUN ("process-attributes", Fprocess_attributes
,
7895 Sprocess_attributes
, 1, 1, 0,
7896 doc
: /* Return attributes of the process given by its PID, a number.
7898 Value is an alist where each element is a cons cell of the form
7902 If this functionality is unsupported, the value is nil.
7904 See `list-system-processes' for getting a list of all process IDs.
7906 The KEYs of the attributes that this function may return are listed
7907 below, together with the type of the associated VALUE (in parentheses).
7908 Not all platforms support all of these attributes; unsupported
7909 attributes will not appear in the returned alist.
7910 Unless explicitly indicated otherwise, numbers can have either
7911 integer or floating point values.
7913 euid -- Effective user User ID of the process (number)
7914 user -- User name corresponding to euid (string)
7915 egid -- Effective user Group ID of the process (number)
7916 group -- Group name corresponding to egid (string)
7917 comm -- Command name (executable name only) (string)
7918 state -- Process state code, such as "S", "R", or "T" (string)
7919 ppid -- Parent process ID (number)
7920 pgrp -- Process group ID (number)
7921 sess -- Session ID, i.e. process ID of session leader (number)
7922 ttname -- Controlling tty name (string)
7923 tpgid -- ID of foreground process group on the process's tty (number)
7924 minflt -- number of minor page faults (number)
7925 majflt -- number of major page faults (number)
7926 cminflt -- cumulative number of minor page faults (number)
7927 cmajflt -- cumulative number of major page faults (number)
7928 utime -- user time used by the process, in the (HIGH LOW USEC) format
7929 stime -- system time used by the process, in the (HIGH LOW USEC) format
7930 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7931 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7932 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7933 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7934 pri -- priority of the process (number)
7935 nice -- nice value of the process (number)
7936 thcount -- process thread count (number)
7937 start -- time the process started, in the (HIGH LOW USEC) format
7938 vsize -- virtual memory size of the process in KB's (number)
7939 rss -- resident set size of the process in KB's (number)
7940 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7941 pcpu -- percents of CPU time used by the process (floating-point number)
7942 pmem -- percents of total physical memory used by process's resident set
7943 (floating-point number)
7944 args -- command line which invoked the process (string). */)
7949 return system_process_attributes (pid
);
7960 QCtype
= intern_c_string (":type");
7961 staticpro (&QCtype
);
7962 QCname
= intern_c_string (":name");
7963 staticpro (&QCname
);
7964 QCtype
= intern_c_string (":type");
7965 staticpro (&QCtype
);
7966 QCname
= intern_c_string (":name");
7967 staticpro (&QCname
);
7968 Qeuid
= intern_c_string ("euid");
7970 Qegid
= intern_c_string ("egid");
7972 Quser
= intern_c_string ("user");
7974 Qgroup
= intern_c_string ("group");
7975 staticpro (&Qgroup
);
7976 Qcomm
= intern_c_string ("comm");
7978 Qstate
= intern_c_string ("state");
7979 staticpro (&Qstate
);
7980 Qppid
= intern_c_string ("ppid");
7982 Qpgrp
= intern_c_string ("pgrp");
7984 Qsess
= intern_c_string ("sess");
7986 Qttname
= intern_c_string ("ttname");
7987 staticpro (&Qttname
);
7988 Qtpgid
= intern_c_string ("tpgid");
7989 staticpro (&Qtpgid
);
7990 Qminflt
= intern_c_string ("minflt");
7991 staticpro (&Qminflt
);
7992 Qmajflt
= intern_c_string ("majflt");
7993 staticpro (&Qmajflt
);
7994 Qcminflt
= intern_c_string ("cminflt");
7995 staticpro (&Qcminflt
);
7996 Qcmajflt
= intern_c_string ("cmajflt");
7997 staticpro (&Qcmajflt
);
7998 Qutime
= intern_c_string ("utime");
7999 staticpro (&Qutime
);
8000 Qstime
= intern_c_string ("stime");
8001 staticpro (&Qstime
);
8002 Qtime
= intern_c_string ("time");
8004 Qcutime
= intern_c_string ("cutime");
8005 staticpro (&Qcutime
);
8006 Qcstime
= intern_c_string ("cstime");
8007 staticpro (&Qcstime
);
8008 Qctime
= intern_c_string ("ctime");
8009 staticpro (&Qctime
);
8010 Qpri
= intern_c_string ("pri");
8012 Qnice
= intern_c_string ("nice");
8014 Qthcount
= intern_c_string ("thcount");
8015 staticpro (&Qthcount
);
8016 Qstart
= intern_c_string ("start");
8017 staticpro (&Qstart
);
8018 Qvsize
= intern_c_string ("vsize");
8019 staticpro (&Qvsize
);
8020 Qrss
= intern_c_string ("rss");
8022 Qetime
= intern_c_string ("etime");
8023 staticpro (&Qetime
);
8024 Qpcpu
= intern_c_string ("pcpu");
8026 Qpmem
= intern_c_string ("pmem");
8028 Qargs
= intern_c_string ("args");
8031 defsubr (&Sget_buffer_process
);
8032 defsubr (&Sprocess_inherit_coding_system_flag
);
8033 defsubr (&Slist_system_processes
);
8034 defsubr (&Sprocess_attributes
);
8038 #endif /* not subprocesses */
8040 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
8041 (do not change this comment) */