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 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(BSD_SYSTEM)
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 /* BSD_SYSTEM */
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
);
206 /* t means use pty, nil means use a pipe,
207 maybe other values to come. */
208 static Lisp_Object Vprocess_connection_type
;
210 /* These next two vars are non-static since sysdep.c uses them in the
211 emulation of `select'. */
212 /* Number of events of change of status of a process. */
214 /* Number of events for which the user or sentinel has been notified. */
217 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
219 #ifdef BROKEN_NON_BLOCKING_CONNECT
220 #undef NON_BLOCKING_CONNECT
222 #ifndef NON_BLOCKING_CONNECT
225 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
226 #if defined (O_NONBLOCK) || defined (O_NDELAY)
227 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
228 #define NON_BLOCKING_CONNECT
229 #endif /* EWOULDBLOCK || EINPROGRESS */
230 #endif /* O_NONBLOCK || O_NDELAY */
231 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
232 #endif /* HAVE_SELECT */
233 #endif /* HAVE_SOCKETS */
234 #endif /* NON_BLOCKING_CONNECT */
235 #endif /* BROKEN_NON_BLOCKING_CONNECT */
237 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
238 this system. We need to read full packets, so we need a
239 "non-destructive" select. So we require either native select,
240 or emulation of select using FIONREAD. */
242 #ifdef BROKEN_DATAGRAM_SOCKETS
243 #undef DATAGRAM_SOCKETS
245 #ifndef DATAGRAM_SOCKETS
247 #if defined (HAVE_SELECT) || defined (FIONREAD)
248 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
249 #define DATAGRAM_SOCKETS
250 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
251 #endif /* HAVE_SELECT || FIONREAD */
252 #endif /* HAVE_SOCKETS */
253 #endif /* DATAGRAM_SOCKETS */
254 #endif /* BROKEN_DATAGRAM_SOCKETS */
256 #if defined HAVE_LOCAL_SOCKETS && defined DATAGRAM_SOCKETS
257 # define HAVE_SEQPACKET
260 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
261 #ifdef EMACS_HAS_USECS
262 #define ADAPTIVE_READ_BUFFERING
266 #ifdef ADAPTIVE_READ_BUFFERING
267 #define READ_OUTPUT_DELAY_INCREMENT 10000
268 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
269 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
271 /* Number of processes which have a non-zero read_output_delay,
272 and therefore might be delayed for adaptive read buffering. */
274 static int process_output_delay_count
;
276 /* Non-zero if any process has non-nil read_output_skip. */
278 static int process_output_skip
;
280 /* Non-nil means to delay reading process output to improve buffering.
281 A value of t means that delay is reset after each send, any other
282 non-nil value does not reset the delay. A value of nil disables
283 adaptive read buffering completely. */
284 static Lisp_Object Vprocess_adaptive_read_buffering
;
286 #define process_output_delay_count 0
290 #include "sysselect.h"
292 static int keyboard_bit_set
P_ ((SELECT_TYPE
*));
293 static void deactivate_process
P_ ((Lisp_Object
));
294 static void status_notify
P_ ((struct Lisp_Process
*));
295 static int read_process_output
P_ ((Lisp_Object
, int));
296 static void create_pty
P_ ((Lisp_Object
));
298 /* If we support a window system, turn on the code to poll periodically
299 to detect C-g. It isn't actually used when doing interrupt input. */
300 #ifdef HAVE_WINDOW_SYSTEM
301 #define POLL_FOR_INPUT
304 static Lisp_Object
get_process ();
305 static void exec_sentinel ();
307 extern int timers_run
;
309 /* Mask of bits indicating the descriptors that we wait for input on. */
311 static SELECT_TYPE input_wait_mask
;
313 /* Mask that excludes keyboard input descriptor(s). */
315 static SELECT_TYPE non_keyboard_wait_mask
;
317 /* Mask that excludes process input descriptor(s). */
319 static SELECT_TYPE non_process_wait_mask
;
321 /* Mask for the gpm mouse input descriptor. */
323 static SELECT_TYPE gpm_wait_mask
;
325 #ifdef NON_BLOCKING_CONNECT
326 /* Mask of bits indicating the descriptors that we wait for connect to
327 complete on. Once they complete, they are removed from this mask
328 and added to the input_wait_mask and non_keyboard_wait_mask. */
330 static SELECT_TYPE connect_wait_mask
;
332 /* Number of bits set in connect_wait_mask. */
333 static int num_pending_connects
;
335 #define IF_NON_BLOCKING_CONNECT(s) s
337 #define IF_NON_BLOCKING_CONNECT(s)
340 /* The largest descriptor currently in use for a process object. */
341 static int max_process_desc
;
343 /* The largest descriptor currently in use for keyboard input. */
344 static int max_keyboard_desc
;
346 /* The largest descriptor currently in use for gpm mouse input. */
347 static int max_gpm_desc
;
349 /* Nonzero means delete a process right away if it exits. */
350 static int delete_exited_processes
;
352 /* Indexed by descriptor, gives the process (if any) for that descriptor */
353 Lisp_Object chan_process
[MAXDESC
];
355 /* Alist of elements (NAME . PROCESS) */
356 Lisp_Object Vprocess_alist
;
358 /* Buffered-ahead input char from process, indexed by channel.
359 -1 means empty (no char is buffered).
360 Used on sys V where the only way to tell if there is any
361 output from the process is to read at least one char.
362 Always -1 on systems that support FIONREAD. */
364 /* Don't make static; need to access externally. */
365 int proc_buffered_char
[MAXDESC
];
367 /* Table of `struct coding-system' for each process. */
368 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
369 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
371 #ifdef DATAGRAM_SOCKETS
372 /* Table of `partner address' for datagram sockets. */
373 struct sockaddr_and_len
{
376 } datagram_address
[MAXDESC
];
377 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
378 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
380 #define DATAGRAM_CHAN_P(chan) (0)
381 #define DATAGRAM_CONN_P(proc) (0)
384 /* Maximum number of bytes to send to a pty without an eof. */
385 static int pty_max_bytes
;
387 /* Nonzero means don't run process sentinels. This is used
389 int inhibit_sentinels
;
395 /* The file name of the pty opened by allocate_pty. */
397 static char pty_name
[24];
400 /* Compute the Lisp form of the process status, p->status, from
401 the numeric status that was returned by `wait'. */
403 static Lisp_Object
status_convert (int);
407 struct Lisp_Process
*p
;
409 eassert (p
->raw_status_new
);
410 p
->status
= status_convert (p
->raw_status
);
411 p
->raw_status_new
= 0;
414 /* Convert a process status word in Unix format to
415 the list that we use internally. */
418 status_convert (int w
)
421 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
422 else if (WIFEXITED (w
))
423 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
424 WCOREDUMP (w
) ? Qt
: Qnil
));
425 else if (WIFSIGNALED (w
))
426 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
427 WCOREDUMP (w
) ? Qt
: Qnil
));
432 /* Given a status-list, extract the three pieces of information
433 and store them individually through the three pointers. */
436 decode_status (l
, symbol
, code
, coredump
)
454 *code
= XFASTINT (XCAR (tem
));
456 *coredump
= !NILP (tem
);
460 /* Return a string describing a process status list. */
464 struct Lisp_Process
*p
;
466 Lisp_Object status
= p
->status
;
469 Lisp_Object string
, string2
;
471 decode_status (status
, &symbol
, &code
, &coredump
);
473 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
476 synchronize_system_messages_locale ();
477 signame
= strsignal (code
);
479 string
= build_string ("unknown");
484 string
= make_unibyte_string (signame
, strlen (signame
));
485 if (! NILP (Vlocale_coding_system
))
486 string
= (code_convert_string_norecord
487 (string
, Vlocale_coding_system
, 0));
488 c1
= STRING_CHAR ((char *) SDATA (string
));
491 Faset (string
, make_number (0), make_number (c2
));
493 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
494 return concat2 (string
, string2
);
496 else if (EQ (symbol
, Qexit
))
499 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
501 return build_string ("finished\n");
502 string
= Fnumber_to_string (make_number (code
));
503 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
504 return concat3 (build_string ("exited abnormally with code "),
507 else if (EQ (symbol
, Qfailed
))
509 string
= Fnumber_to_string (make_number (code
));
510 string2
= build_string ("\n");
511 return concat3 (build_string ("failed with code "),
515 return Fcopy_sequence (Fsymbol_name (symbol
));
520 /* Open an available pty, returning a file descriptor.
521 Return -1 on failure.
522 The file name of the terminal corresponding to the pty
523 is left in the variable pty_name. */
534 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
535 for (i
= 0; i
< 16; i
++)
538 struct stat stb
; /* Used in some PTY_OPEN. */
539 #ifdef PTY_NAME_SPRINTF
542 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
543 #endif /* no PTY_NAME_SPRINTF */
547 #else /* no PTY_OPEN */
549 { /* Some systems name their pseudoterminals so that there are gaps in
550 the usual sequence - for example, on HP9000/S700 systems, there
551 are no pseudoterminals with names ending in 'f'. So we wait for
552 three failures in a row before deciding that we've reached the
554 int failed_count
= 0;
556 if (stat (pty_name
, &stb
) < 0)
559 if (failed_count
>= 3)
566 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
568 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
571 #endif /* no PTY_OPEN */
575 /* check to make certain that both sides are available
576 this avoids a nasty yet stupid bug in rlogins */
577 #ifdef PTY_TTY_NAME_SPRINTF
580 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
581 #endif /* no PTY_TTY_NAME_SPRINTF */
582 if (access (pty_name
, 6) != 0)
597 #endif /* HAVE_PTYS */
603 register Lisp_Object val
, tem
, name1
;
604 register struct Lisp_Process
*p
;
608 p
= allocate_process ();
616 p
->raw_status_new
= 0;
618 p
->mark
= Fmake_marker ();
619 p
->kill_without_query
= 0;
621 #ifdef ADAPTIVE_READ_BUFFERING
622 p
->adaptive_read_buffering
= 0;
623 p
->read_output_delay
= 0;
624 p
->read_output_skip
= 0;
627 /* If name is already in use, modify it until it is unused. */
632 tem
= Fget_process (name1
);
633 if (NILP (tem
)) break;
634 sprintf (suffix
, "<%d>", i
);
635 name1
= concat2 (name
, build_string (suffix
));
639 XSETPROCESS (val
, p
);
640 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
645 remove_process (proc
)
646 register Lisp_Object proc
;
648 register Lisp_Object pair
;
650 pair
= Frassq (proc
, Vprocess_alist
);
651 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
653 deactivate_process (proc
);
656 /* Setup coding systems of PROCESS. */
659 setup_process_coding_systems (process
)
662 struct Lisp_Process
*p
= XPROCESS (process
);
664 int outch
= p
->outfd
;
665 Lisp_Object coding_system
;
667 if (inch
< 0 || outch
< 0)
670 if (!proc_decode_coding_system
[inch
])
671 proc_decode_coding_system
[inch
]
672 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
673 coding_system
= p
->decode_coding_system
;
674 if (! NILP (p
->filter
))
676 else if (BUFFERP (p
->buffer
))
678 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
679 coding_system
= raw_text_coding_system (coding_system
);
681 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
683 if (!proc_encode_coding_system
[outch
])
684 proc_encode_coding_system
[outch
]
685 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
686 setup_coding_system (p
->encode_coding_system
,
687 proc_encode_coding_system
[outch
]);
690 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
691 doc
: /* Return t if OBJECT is a process. */)
695 return PROCESSP (object
) ? Qt
: Qnil
;
698 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
699 doc
: /* Return the process named NAME, or nil if there is none. */)
701 register Lisp_Object name
;
706 return Fcdr (Fassoc (name
, Vprocess_alist
));
709 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
710 doc
: /* Return the (or a) process associated with BUFFER.
711 BUFFER may be a buffer or the name of one. */)
713 register Lisp_Object buffer
;
715 register Lisp_Object buf
, tail
, proc
;
717 if (NILP (buffer
)) return Qnil
;
718 buf
= Fget_buffer (buffer
);
719 if (NILP (buf
)) return Qnil
;
721 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
723 proc
= Fcdr (XCAR (tail
));
724 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
730 /* This is how commands for the user decode process arguments. It
731 accepts a process, a process name, a buffer, a buffer name, or nil.
732 Buffers denote the first process in the buffer, and nil denotes the
737 register Lisp_Object name
;
739 register Lisp_Object proc
, obj
;
742 obj
= Fget_process (name
);
744 obj
= Fget_buffer (name
);
746 error ("Process %s does not exist", SDATA (name
));
748 else if (NILP (name
))
749 obj
= Fcurrent_buffer ();
753 /* Now obj should be either a buffer object or a process object.
757 proc
= Fget_buffer_process (obj
);
759 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
771 /* Fdelete_process promises to immediately forget about the process, but in
772 reality, Emacs needs to remember those processes until they have been
773 treated by sigchld_handler; otherwise this handler would consider the
774 process as being synchronous and say that the synchronous process is
776 static Lisp_Object deleted_pid_list
;
779 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
780 doc
: /* Delete PROCESS: kill it and forget about it immediately.
781 PROCESS may be a process, a buffer, the name of a process or buffer, or
782 nil, indicating the current buffer's process. */)
784 register Lisp_Object process
;
786 register struct Lisp_Process
*p
;
788 process
= get_process (process
);
789 p
= XPROCESS (process
);
791 p
->raw_status_new
= 0;
792 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
794 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
795 p
->tick
= ++process_tick
;
797 redisplay_preserve_echo_area (13);
799 else if (p
->infd
>= 0)
803 /* Assignment to EMACS_INT stops GCC whining about limited range
805 EMACS_INT pid
= p
->pid
;
807 /* No problem storing the pid here, as it is still in Vprocess_alist. */
808 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
809 /* GC treated elements set to nil. */
810 Fdelq (Qnil
, deleted_pid_list
));
811 /* If the process has already signaled, remove it from the list. */
812 if (p
->raw_status_new
)
815 if (CONSP (p
->status
))
816 symbol
= XCAR (p
->status
);
817 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
819 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
823 Fkill_process (process
, Qnil
);
824 /* Do this now, since remove_process will make sigchld_handler do nothing. */
826 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
827 p
->tick
= ++process_tick
;
829 redisplay_preserve_echo_area (13);
832 remove_process (process
);
836 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
837 doc
: /* Return the status of PROCESS.
838 The returned value is one of the following symbols:
839 run -- for a process that is running.
840 stop -- for a process stopped but continuable.
841 exit -- for a process that has exited.
842 signal -- for a process that has got a fatal signal.
843 open -- for a network stream connection that is open.
844 listen -- for a network stream server that is listening.
845 closed -- for a network stream connection that is closed.
846 connect -- when waiting for a non-blocking connection to complete.
847 failed -- when a non-blocking connection has failed.
848 nil -- if arg is a process name and no such process exists.
849 PROCESS may be a process, a buffer, the name of a process, or
850 nil, indicating the current buffer's process. */)
852 register Lisp_Object process
;
854 register struct Lisp_Process
*p
;
855 register Lisp_Object status
;
857 if (STRINGP (process
))
858 process
= Fget_process (process
);
860 process
= get_process (process
);
865 p
= XPROCESS (process
);
866 if (p
->raw_status_new
)
870 status
= XCAR (status
);
871 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
873 if (EQ (status
, Qexit
))
875 else if (EQ (p
->command
, Qt
))
877 else if (EQ (status
, Qrun
))
883 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
885 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
886 If PROCESS has not yet exited or died, return 0. */)
888 register Lisp_Object process
;
890 CHECK_PROCESS (process
);
891 if (XPROCESS (process
)->raw_status_new
)
892 update_status (XPROCESS (process
));
893 if (CONSP (XPROCESS (process
)->status
))
894 return XCAR (XCDR (XPROCESS (process
)->status
));
895 return make_number (0);
898 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
899 doc
: /* Return the process id of PROCESS.
900 This is the pid of the external process which PROCESS uses or talks to.
901 For a network connection, this value is nil. */)
903 register Lisp_Object process
;
905 /* Assignment to EMACS_INT stops GCC whining about limited range of
909 CHECK_PROCESS (process
);
910 pid
= XPROCESS (process
)->pid
;
911 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
914 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
915 doc
: /* Return the name of PROCESS, as a string.
916 This is the name of the program invoked in PROCESS,
917 possibly modified to make it unique among process names. */)
919 register Lisp_Object process
;
921 CHECK_PROCESS (process
);
922 return XPROCESS (process
)->name
;
925 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
926 doc
: /* Return the command that was executed to start PROCESS.
927 This is a list of strings, the first string being the program executed
928 and the rest of the strings being the arguments given to it.
929 For a network or serial process, this is nil (process is running) or t
930 \(process is stopped). */)
932 register Lisp_Object process
;
934 CHECK_PROCESS (process
);
935 return XPROCESS (process
)->command
;
938 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
939 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
940 This is the terminal that the process itself reads and writes on,
941 not the name of the pty that Emacs uses to talk with that terminal. */)
943 register Lisp_Object process
;
945 CHECK_PROCESS (process
);
946 return XPROCESS (process
)->tty_name
;
949 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
951 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
953 register Lisp_Object process
, buffer
;
955 struct Lisp_Process
*p
;
957 CHECK_PROCESS (process
);
959 CHECK_BUFFER (buffer
);
960 p
= XPROCESS (process
);
962 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
963 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
964 setup_process_coding_systems (process
);
968 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
970 doc
: /* Return the buffer PROCESS is associated with.
971 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
973 register Lisp_Object process
;
975 CHECK_PROCESS (process
);
976 return XPROCESS (process
)->buffer
;
979 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
981 doc
: /* Return the marker for the end of the last output from PROCESS. */)
983 register Lisp_Object process
;
985 CHECK_PROCESS (process
);
986 return XPROCESS (process
)->mark
;
989 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
991 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
992 A value of t means stop accepting output from the process.
994 When a process has a filter, its buffer is not used for output.
995 Instead, each time it does output, the entire string of output is
996 passed to the filter.
998 The filter gets two arguments: the process and the string of output.
999 The string argument is normally a multibyte string, except:
1000 - if the process' input coding system is no-conversion or raw-text,
1001 it is a unibyte string (the non-converted input), or else
1002 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1003 string (the result of converting the decoded input multibyte
1004 string to unibyte with `string-make-unibyte'). */)
1006 register Lisp_Object process
, filter
;
1008 struct Lisp_Process
*p
;
1010 CHECK_PROCESS (process
);
1011 p
= XPROCESS (process
);
1013 /* Don't signal an error if the process' input file descriptor
1014 is closed. This could make debugging Lisp more difficult,
1015 for example when doing something like
1017 (setq process (start-process ...))
1019 (set-process-filter process ...) */
1023 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1025 FD_CLR (p
->infd
, &input_wait_mask
);
1026 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1028 else if (EQ (p
->filter
, Qt
)
1029 /* Network or serial process not stopped: */
1030 && !EQ (p
->command
, Qt
))
1032 FD_SET (p
->infd
, &input_wait_mask
);
1033 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1038 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1039 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1040 setup_process_coding_systems (process
);
1044 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1046 doc
: /* Returns the filter function of PROCESS; nil if none.
1047 See `set-process-filter' for more info on filter functions. */)
1049 register Lisp_Object process
;
1051 CHECK_PROCESS (process
);
1052 return XPROCESS (process
)->filter
;
1055 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1057 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1058 The sentinel is called as a function when the process changes state.
1059 It gets two arguments: the process, and a string describing the change. */)
1061 register Lisp_Object process
, sentinel
;
1063 struct Lisp_Process
*p
;
1065 CHECK_PROCESS (process
);
1066 p
= XPROCESS (process
);
1068 p
->sentinel
= sentinel
;
1069 if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1070 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1074 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1076 doc
: /* Return the sentinel of PROCESS; nil if none.
1077 See `set-process-sentinel' for more info on sentinels. */)
1079 register Lisp_Object process
;
1081 CHECK_PROCESS (process
);
1082 return XPROCESS (process
)->sentinel
;
1085 DEFUN ("set-process-window-size", Fset_process_window_size
,
1086 Sset_process_window_size
, 3, 3, 0,
1087 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1088 (process
, height
, width
)
1089 register Lisp_Object process
, height
, width
;
1091 CHECK_PROCESS (process
);
1092 CHECK_NATNUM (height
);
1093 CHECK_NATNUM (width
);
1095 if (XPROCESS (process
)->infd
< 0
1096 || set_window_size (XPROCESS (process
)->infd
,
1097 XINT (height
), XINT (width
)) <= 0)
1103 DEFUN ("set-process-inherit-coding-system-flag",
1104 Fset_process_inherit_coding_system_flag
,
1105 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1106 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1107 If the second argument FLAG is non-nil, then the variable
1108 `buffer-file-coding-system' of the buffer associated with PROCESS
1109 will be bound to the value of the coding system used to decode
1112 This is useful when the coding system specified for the process buffer
1113 leaves either the character code conversion or the end-of-line conversion
1114 unspecified, or if the coding system used to decode the process output
1115 is more appropriate for saving the process buffer.
1117 Binding the variable `inherit-process-coding-system' to non-nil before
1118 starting the process is an alternative way of setting the inherit flag
1119 for the process which will run. */)
1121 register Lisp_Object process
, flag
;
1123 CHECK_PROCESS (process
);
1124 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1128 DEFUN ("process-inherit-coding-system-flag",
1129 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1131 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1132 If this flag is t, `buffer-file-coding-system' of the buffer
1133 associated with PROCESS will inherit the coding system used to decode
1134 the process output. */)
1136 register Lisp_Object process
;
1138 CHECK_PROCESS (process
);
1139 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
1142 DEFUN ("set-process-query-on-exit-flag",
1143 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1145 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1146 If the second argument FLAG is non-nil, Emacs will query the user before
1147 exiting or killing a buffer if PROCESS is running. */)
1149 register Lisp_Object process
, flag
;
1151 CHECK_PROCESS (process
);
1152 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1156 DEFUN ("process-query-on-exit-flag",
1157 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1159 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1161 register Lisp_Object process
;
1163 CHECK_PROCESS (process
);
1164 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1167 #ifdef DATAGRAM_SOCKETS
1168 Lisp_Object
Fprocess_datagram_address ();
1171 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1173 doc
: /* Return the contact info of PROCESS; t for a real child.
1174 For a network or serial connection, the value depends on the optional
1175 KEY arg. If KEY is nil, value is a cons cell of the form (HOST
1176 SERVICE) for a network connection or (PORT SPEED) for a serial
1177 connection. If KEY is t, the complete contact information for the
1178 connection is returned, else the specific value for the keyword KEY is
1179 returned. See `make-network-process' or `make-serial-process' for a
1180 list of keywords. */)
1182 register Lisp_Object process
, key
;
1184 Lisp_Object contact
;
1186 CHECK_PROCESS (process
);
1187 contact
= XPROCESS (process
)->childp
;
1189 #ifdef DATAGRAM_SOCKETS
1190 if (DATAGRAM_CONN_P (process
)
1191 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1192 contact
= Fplist_put (contact
, QCremote
,
1193 Fprocess_datagram_address (process
));
1196 if ((!NETCONN_P (process
) && !SERIALCONN_P (process
)) || EQ (key
, Qt
))
1198 if (NILP (key
) && NETCONN_P (process
))
1199 return Fcons (Fplist_get (contact
, QChost
),
1200 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1201 if (NILP (key
) && SERIALCONN_P (process
))
1202 return Fcons (Fplist_get (contact
, QCport
),
1203 Fcons (Fplist_get (contact
, QCspeed
), Qnil
));
1204 return Fplist_get (contact
, key
);
1207 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1209 doc
: /* Return the plist of PROCESS. */)
1211 register Lisp_Object process
;
1213 CHECK_PROCESS (process
);
1214 return XPROCESS (process
)->plist
;
1217 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1219 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1221 register Lisp_Object process
, plist
;
1223 CHECK_PROCESS (process
);
1226 XPROCESS (process
)->plist
= plist
;
1230 #if 0 /* Turned off because we don't currently record this info
1231 in the process. Perhaps add it. */
1232 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1233 doc
: /* Return the connection type of PROCESS.
1234 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1235 a socket connection. */)
1237 Lisp_Object process
;
1239 return XPROCESS (process
)->type
;
1243 DEFUN ("process-type", Fprocess_type
, Sprocess_type
, 1, 1, 0,
1244 doc
: /* Return the connection type of PROCESS.
1245 The value is either the symbol `real', `network', or `serial'.
1246 PROCESS may be a process, a buffer, the name of a process or buffer, or
1247 nil, indicating the current buffer's process. */)
1249 Lisp_Object process
;
1252 proc
= get_process (process
);
1253 return XPROCESS (proc
)->type
;
1257 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1259 doc
: /* Convert network ADDRESS from internal format to a string.
1260 A 4 or 5 element vector represents an IPv4 address (with port number).
1261 An 8 or 9 element vector represents an IPv6 address (with port number).
1262 If optional second argument OMIT-PORT is non-nil, don't include a port
1263 number in the string, even when present in ADDRESS.
1264 Returns nil if format of ADDRESS is invalid. */)
1265 (address
, omit_port
)
1266 Lisp_Object address
, omit_port
;
1271 if (STRINGP (address
)) /* AF_LOCAL */
1274 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1276 register struct Lisp_Vector
*p
= XVECTOR (address
);
1277 Lisp_Object args
[10];
1280 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1282 args
[0] = build_string ("%d.%d.%d.%d");
1285 else if (p
->size
== 5)
1287 args
[0] = build_string ("%d.%d.%d.%d:%d");
1290 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1292 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1295 else if (p
->size
== 9)
1297 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1303 for (i
= 0; i
< nargs
; i
++)
1305 EMACS_INT element
= XINT (p
->contents
[i
]);
1307 if (element
< 0 || element
> 65535)
1310 if (nargs
<= 5 /* IPv4 */
1311 && i
< 4 /* host, not port */
1315 args
[i
+1] = p
->contents
[i
];
1318 return Fformat (nargs
+1, args
);
1321 if (CONSP (address
))
1323 Lisp_Object args
[2];
1324 args
[0] = build_string ("<Family %d>");
1325 args
[1] = Fcar (address
);
1326 return Fformat (2, args
);
1334 list_processes_1 (query_only
)
1335 Lisp_Object query_only
;
1337 register Lisp_Object tail
, tem
;
1338 Lisp_Object proc
, minspace
, tem1
;
1339 register struct Lisp_Process
*p
;
1341 int w_proc
, w_buffer
, w_tty
;
1343 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1345 w_proc
= 4; /* Proc */
1346 w_buffer
= 6; /* Buffer */
1347 w_tty
= 0; /* Omit if no ttys */
1349 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1353 proc
= Fcdr (XCAR (tail
));
1354 p
= XPROCESS (proc
);
1357 if (!NILP (query_only
) && p
->kill_without_query
)
1359 if (STRINGP (p
->name
)
1360 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1362 if (!NILP (p
->buffer
))
1364 if (NILP (XBUFFER (p
->buffer
)->name
))
1367 w_buffer
= 8; /* (Killed) */
1369 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1372 if (STRINGP (p
->tty_name
)
1373 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1377 XSETFASTINT (i_status
, w_proc
+ 1);
1378 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1381 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1382 XSETFASTINT (i_command
, XFASTINT (i_tty
) + w_tty
+ 1);
1387 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1390 XSETFASTINT (minspace
, 1);
1392 set_buffer_internal (XBUFFER (Vstandard_output
));
1393 current_buffer
->undo_list
= Qt
;
1395 current_buffer
->truncate_lines
= Qt
;
1397 write_string ("Proc", -1);
1398 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1399 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1402 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1404 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1405 write_string ("\n", -1);
1407 write_string ("----", -1);
1408 Findent_to (i_status
, minspace
); write_string ("------", -1);
1409 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1412 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1414 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1415 write_string ("\n", -1);
1417 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1421 proc
= Fcdr (XCAR (tail
));
1422 p
= XPROCESS (proc
);
1425 if (!NILP (query_only
) && p
->kill_without_query
)
1428 Finsert (1, &p
->name
);
1429 Findent_to (i_status
, minspace
);
1431 if (p
->raw_status_new
)
1434 if (CONSP (p
->status
))
1435 symbol
= XCAR (p
->status
);
1437 if (EQ (symbol
, Qsignal
))
1440 tem
= Fcar (Fcdr (p
->status
));
1441 Fprinc (symbol
, Qnil
);
1443 else if (NETCONN1_P (p
) || SERIALCONN1_P (p
))
1445 if (EQ (symbol
, Qexit
))
1446 write_string ("closed", -1);
1447 else if (EQ (p
->command
, Qt
))
1448 write_string ("stopped", -1);
1449 else if (EQ (symbol
, Qrun
))
1450 write_string ("open", -1);
1452 Fprinc (symbol
, Qnil
);
1454 else if (SERIALCONN1_P (p
))
1456 write_string ("running", -1);
1459 Fprinc (symbol
, Qnil
);
1461 if (EQ (symbol
, Qexit
))
1464 tem
= Fcar (Fcdr (p
->status
));
1467 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1468 write_string (tembuf
, -1);
1472 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1475 Findent_to (i_buffer
, minspace
);
1476 if (NILP (p
->buffer
))
1477 insert_string ("(none)");
1478 else if (NILP (XBUFFER (p
->buffer
)->name
))
1479 insert_string ("(Killed)");
1481 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1485 Findent_to (i_tty
, minspace
);
1486 if (STRINGP (p
->tty_name
))
1487 Finsert (1, &p
->tty_name
);
1490 Findent_to (i_command
, minspace
);
1492 if (EQ (p
->status
, Qlisten
))
1494 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1495 if (INTEGERP (port
))
1496 port
= Fnumber_to_string (port
);
1498 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1499 sprintf (tembuf
, "(network %s server on %s)\n",
1500 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1501 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1502 insert_string (tembuf
);
1504 else if (NETCONN1_P (p
))
1506 /* For a local socket, there is no host name,
1507 so display service instead. */
1508 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1509 if (!STRINGP (host
))
1511 host
= Fplist_get (p
->childp
, QCservice
);
1512 if (INTEGERP (host
))
1513 host
= Fnumber_to_string (host
);
1516 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1517 sprintf (tembuf
, "(network %s connection to %s)\n",
1518 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1519 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1520 insert_string (tembuf
);
1522 else if (SERIALCONN1_P (p
))
1524 Lisp_Object port
= Fplist_get (p
->childp
, QCport
);
1525 Lisp_Object speed
= Fplist_get (p
->childp
, QCspeed
);
1526 insert_string ("(serial port ");
1528 insert_string (SDATA (port
));
1530 insert_string ("?");
1531 if (INTEGERP (speed
))
1533 sprintf (tembuf
, " at %ld b/s", (long) XINT (speed
));
1534 insert_string (tembuf
);
1536 insert_string (")\n");
1550 insert_string (" ");
1552 insert_string ("\n");
1557 status_notify (NULL
);
1558 redisplay_preserve_echo_area (13);
1563 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1564 doc
: /* Display a list of all processes.
1565 If optional argument QUERY-ONLY is non-nil, only processes with
1566 the query-on-exit flag set will be listed.
1567 Any process listed as exited or signaled is actually eliminated
1568 after the listing is made. */)
1570 Lisp_Object query_only
;
1572 internal_with_output_to_temp_buffer ("*Process List*",
1573 list_processes_1
, query_only
);
1577 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1578 doc
: /* Return a list of all processes. */)
1581 return Fmapcar (Qcdr
, Vprocess_alist
);
1584 /* Starting asynchronous inferior processes. */
1586 static Lisp_Object
start_process_unwind ();
1588 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1589 doc
: /* Start a program in a subprocess. Return the process object for it.
1590 NAME is name for process. It is modified if necessary to make it unique.
1591 BUFFER is the buffer (or buffer name) to associate with the process.
1593 Process output (both standard output and standard error streams) goes
1594 at end of BUFFER, unless you specify an output stream or filter
1595 function to handle the output. BUFFER may also be nil, meaning that
1596 this process is not associated with any buffer.
1598 PROGRAM is the program file name. It is searched for in PATH. If
1599 nil, just associate a pty with the buffer. Remaining arguments are
1600 strings to give program as arguments.
1602 If you want to separate standard output from standard error, invoke
1603 the command through a shell and redirect one of them using the shell
1606 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1609 register Lisp_Object
*args
;
1611 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1612 register unsigned char **new_argv
;
1614 int count
= SPECPDL_INDEX ();
1618 buffer
= Fget_buffer_create (buffer
);
1620 /* Make sure that the child will be able to chdir to the current
1621 buffer's current directory, or its unhandled equivalent. We
1622 can't just have the child check for an error when it does the
1623 chdir, since it's in a vfork.
1625 We have to GCPRO around this because Fexpand_file_name and
1626 Funhandled_file_name_directory might call a file name handling
1627 function. The argument list is protected by the caller, so all
1628 we really have to worry about is buffer. */
1630 struct gcpro gcpro1
, gcpro2
;
1632 current_dir
= current_buffer
->directory
;
1634 GCPRO2 (buffer
, current_dir
);
1636 current_dir
= Funhandled_file_name_directory (current_dir
);
1637 if (NILP (current_dir
))
1638 /* If the file name handler says that current_dir is unreachable, use
1639 a sensible default. */
1640 current_dir
= build_string ("~/");
1641 current_dir
= expand_and_dir_to_file (current_dir
, Qnil
);
1642 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1643 report_file_error ("Setting current directory",
1644 Fcons (current_buffer
->directory
, Qnil
));
1650 CHECK_STRING (name
);
1654 if (!NILP (program
))
1655 CHECK_STRING (program
);
1657 proc
= make_process (name
);
1658 /* If an error occurs and we can't start the process, we want to
1659 remove it from the process list. This means that each error
1660 check in create_process doesn't need to call remove_process
1661 itself; it's all taken care of here. */
1662 record_unwind_protect (start_process_unwind
, proc
);
1664 XPROCESS (proc
)->childp
= Qt
;
1665 XPROCESS (proc
)->plist
= Qnil
;
1666 XPROCESS (proc
)->type
= Qreal
;
1667 XPROCESS (proc
)->buffer
= buffer
;
1668 XPROCESS (proc
)->sentinel
= Qnil
;
1669 XPROCESS (proc
)->filter
= Qnil
;
1670 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1672 #ifdef ADAPTIVE_READ_BUFFERING
1673 XPROCESS (proc
)->adaptive_read_buffering
1674 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1675 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1678 /* Make the process marker point into the process buffer (if any). */
1679 if (BUFFERP (buffer
))
1680 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1681 BUF_ZV (XBUFFER (buffer
)),
1682 BUF_ZV_BYTE (XBUFFER (buffer
)));
1685 /* Decide coding systems for communicating with the process. Here
1686 we don't setup the structure coding_system nor pay attention to
1687 unibyte mode. They are done in create_process. */
1689 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1690 Lisp_Object coding_systems
= Qt
;
1691 Lisp_Object val
, *args2
;
1692 struct gcpro gcpro1
, gcpro2
;
1694 val
= Vcoding_system_for_read
;
1697 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1698 args2
[0] = Qstart_process
;
1699 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1700 GCPRO2 (proc
, current_dir
);
1701 if (!NILP (program
))
1702 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1704 if (CONSP (coding_systems
))
1705 val
= XCAR (coding_systems
);
1706 else if (CONSP (Vdefault_process_coding_system
))
1707 val
= XCAR (Vdefault_process_coding_system
);
1709 XPROCESS (proc
)->decode_coding_system
= val
;
1711 val
= Vcoding_system_for_write
;
1714 if (EQ (coding_systems
, Qt
))
1716 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1717 args2
[0] = Qstart_process
;
1718 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1719 GCPRO2 (proc
, current_dir
);
1720 if (!NILP (program
))
1721 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1724 if (CONSP (coding_systems
))
1725 val
= XCDR (coding_systems
);
1726 else if (CONSP (Vdefault_process_coding_system
))
1727 val
= XCDR (Vdefault_process_coding_system
);
1729 XPROCESS (proc
)->encode_coding_system
= val
;
1733 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1734 XPROCESS (proc
)->decoding_carryover
= 0;
1735 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1737 XPROCESS (proc
)->inherit_coding_system_flag
1738 = !(NILP (buffer
) || !inherit_process_coding_system
);
1740 if (!NILP (program
))
1742 /* If program file name is not absolute, search our path for it.
1743 Put the name we will really use in TEM. */
1744 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1745 && !(SCHARS (program
) > 1
1746 && IS_DEVICE_SEP (SREF (program
, 1))))
1748 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1751 GCPRO4 (name
, program
, buffer
, current_dir
);
1752 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1755 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1756 tem
= Fexpand_file_name (tem
, Qnil
);
1760 if (!NILP (Ffile_directory_p (program
)))
1761 error ("Specified program for new process is a directory");
1765 /* If program file name starts with /: for quoting a magic name,
1767 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1768 && SREF (tem
, 1) == ':')
1769 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1772 struct gcpro gcpro1
;
1775 /* Encode the file name and put it in NEW_ARGV.
1776 That's where the child will use it to execute the program. */
1777 tem
= Fcons (ENCODE_FILE (tem
), Qnil
);
1779 /* Here we encode arguments by the coding system used for sending
1780 data to the process. We don't support using different coding
1781 systems for encoding arguments and for encoding data sent to the
1784 for (i
= 3; i
< nargs
; i
++)
1786 tem
= Fcons (args
[i
], tem
);
1787 CHECK_STRING (XCAR (tem
));
1788 if (STRING_MULTIBYTE (XCAR (tem
)))
1790 code_convert_string_norecord
1791 (XCAR (tem
), XPROCESS (proc
)->encode_coding_system
, 1));
1797 /* Now that everything is encoded we can collect the strings into
1799 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1800 new_argv
[nargs
- 2] = 0;
1802 for (i
= nargs
- 3; i
>= 0; i
--)
1804 new_argv
[i
] = SDATA (XCAR (tem
));
1808 create_process (proc
, (char **) new_argv
, current_dir
);
1813 return unbind_to (count
, proc
);
1816 /* This function is the unwind_protect form for Fstart_process. If
1817 PROC doesn't have its pid set, then we know someone has signaled
1818 an error and the process wasn't started successfully, so we should
1819 remove it from the process list. */
1821 start_process_unwind (proc
)
1824 if (!PROCESSP (proc
))
1827 /* Was PROC started successfully? */
1828 if (XPROCESS (proc
)->pid
== -1)
1829 remove_process (proc
);
1835 create_process_1 (timer
)
1836 struct atimer
*timer
;
1838 /* Nothing to do. */
1842 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1845 /* Mimic blocking of signals on system V, which doesn't really have it. */
1847 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1848 int sigchld_deferred
;
1851 create_process_sigchld ()
1853 signal (SIGCHLD
, create_process_sigchld
);
1855 sigchld_deferred
= 1;
1862 create_process (process
, new_argv
, current_dir
)
1863 Lisp_Object process
;
1865 Lisp_Object current_dir
;
1867 int inchannel
, outchannel
;
1870 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1871 int wait_child_setup
[2];
1873 #ifdef POSIX_SIGNALS
1876 struct sigaction sigint_action
;
1877 struct sigaction sigquit_action
;
1879 struct sigaction sighup_action
;
1881 #else /* !POSIX_SIGNALS */
1884 SIGTYPE (*sigchld
)();
1887 #endif /* !POSIX_SIGNALS */
1888 /* Use volatile to protect variables from being clobbered by longjmp. */
1889 volatile int forkin
, forkout
;
1890 volatile int pty_flag
= 0;
1892 extern char **environ
;
1895 inchannel
= outchannel
= -1;
1898 if (!NILP (Vprocess_connection_type
))
1899 outchannel
= inchannel
= allocate_pty ();
1903 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1904 /* On most USG systems it does not work to open the pty's tty here,
1905 then close it and reopen it in the child. */
1907 /* Don't let this terminal become our controlling terminal
1908 (in case we don't have one). */
1909 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1911 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1914 report_file_error ("Opening pty", Qnil
);
1916 forkin
= forkout
= -1;
1917 #endif /* not USG, or USG_SUBTTY_WORKS */
1921 #endif /* HAVE_PTYS */
1926 report_file_error ("Creating pipe", Qnil
);
1932 emacs_close (inchannel
);
1933 emacs_close (forkout
);
1934 report_file_error ("Creating pipe", Qnil
);
1940 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
1944 tem
= pipe (wait_child_setup
);
1946 report_file_error ("Creating pipe", Qnil
);
1947 tem
= fcntl (wait_child_setup
[1], F_GETFD
, 0);
1949 tem
= fcntl (wait_child_setup
[1], F_SETFD
, tem
| FD_CLOEXEC
);
1952 emacs_close (wait_child_setup
[0]);
1953 emacs_close (wait_child_setup
[1]);
1954 report_file_error ("Setting file descriptor flags", Qnil
);
1960 /* Replaced by close_process_descs */
1961 set_exclusive_use (inchannel
);
1962 set_exclusive_use (outchannel
);
1966 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1967 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1970 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1971 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1975 /* Record this as an active process, with its channels.
1976 As a result, child_setup will close Emacs's side of the pipes. */
1977 chan_process
[inchannel
] = process
;
1978 XPROCESS (process
)->infd
= inchannel
;
1979 XPROCESS (process
)->outfd
= outchannel
;
1981 /* Previously we recorded the tty descriptor used in the subprocess.
1982 It was only used for getting the foreground tty process, so now
1983 we just reopen the device (see emacs_get_tty_pgrp) as this is
1984 more portable (see USG_SUBTTY_WORKS above). */
1986 XPROCESS (process
)->pty_flag
= pty_flag
;
1987 XPROCESS (process
)->status
= Qrun
;
1988 setup_process_coding_systems (process
);
1990 /* Delay interrupts until we have a chance to store
1991 the new fork's pid in its process structure */
1992 #ifdef POSIX_SIGNALS
1993 sigemptyset (&blocked
);
1995 sigaddset (&blocked
, SIGCHLD
);
1997 #ifdef HAVE_WORKING_VFORK
1998 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1999 this sets the parent's signal handlers as well as the child's.
2000 So delay all interrupts whose handlers the child might munge,
2001 and record the current handlers so they can be restored later. */
2002 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
2003 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
2005 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
2007 #endif /* HAVE_WORKING_VFORK */
2008 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
2009 #else /* !POSIX_SIGNALS */
2011 #if defined (BSD_SYSTEM) || defined (HPUX)
2012 sigsetmask (sigmask (SIGCHLD
));
2013 #else /* ordinary USG */
2015 sigchld_deferred
= 0;
2016 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
2018 #endif /* ordinary USG */
2019 #endif /* SIGCHLD */
2020 #endif /* !POSIX_SIGNALS */
2022 FD_SET (inchannel
, &input_wait_mask
);
2023 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2024 if (inchannel
> max_process_desc
)
2025 max_process_desc
= inchannel
;
2027 /* Until we store the proper pid, enable sigchld_handler
2028 to recognize an unknown pid as standing for this process.
2029 It is very important not to let this `marker' value stay
2030 in the table after this function has returned; if it does
2031 it might cause call-process to hang and subsequent asynchronous
2032 processes to get their return values scrambled. */
2033 XPROCESS (process
)->pid
= -1;
2038 /* child_setup must clobber environ on systems with true vfork.
2039 Protect it from permanent change. */
2040 char **save_environ
= environ
;
2042 current_dir
= ENCODE_FILE (current_dir
);
2047 #endif /* not WINDOWSNT */
2049 int xforkin
= forkin
;
2050 int xforkout
= forkout
;
2052 #if 0 /* This was probably a mistake--it duplicates code later on,
2053 but fails to handle all the cases. */
2054 /* Make sure SIGCHLD is not blocked in the child. */
2055 sigsetmask (SIGEMPTYMASK
);
2058 /* Make the pty be the controlling terminal of the process. */
2060 /* First, disconnect its current controlling terminal. */
2062 /* We tried doing setsid only if pty_flag, but it caused
2063 process_set_signal to fail on SGI when using a pipe. */
2065 /* Make the pty's terminal the controlling terminal. */
2069 /* We ignore the return value
2070 because faith@cs.unc.edu says that is necessary on Linux. */
2071 ioctl (xforkin
, TIOCSCTTY
, 0);
2074 #else /* not HAVE_SETSID */
2076 /* It's very important to call setpgrp here and no time
2077 afterwards. Otherwise, we lose our controlling tty which
2078 is set when we open the pty. */
2081 #endif /* not HAVE_SETSID */
2082 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2083 if (pty_flag
&& xforkin
>= 0)
2086 tcgetattr (xforkin
, &t
);
2088 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2089 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2092 #if defined (NTTYDISC) && defined (TIOCSETD)
2093 if (pty_flag
&& xforkin
>= 0)
2095 /* Use new line discipline. */
2096 int ldisc
= NTTYDISC
;
2097 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2102 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2103 can do TIOCSPGRP only to the process's controlling tty. */
2106 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2107 I can't test it since I don't have 4.3. */
2108 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2109 ioctl (j
, TIOCNOTTY
, 0);
2112 /* In order to get a controlling terminal on some versions
2113 of BSD, it is necessary to put the process in pgrp 0
2114 before it opens the terminal. */
2122 #endif /* TIOCNOTTY */
2124 #if !defined (DONT_REOPEN_PTY)
2125 /*** There is a suggestion that this ought to be a
2126 conditional on TIOCSPGRP,
2127 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2128 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2129 that system does seem to need this code, even though
2130 both HAVE_SETSID and TIOCSCTTY are defined. */
2131 /* Now close the pty (if we had it open) and reopen it.
2132 This makes the pty the controlling terminal of the subprocess. */
2136 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2139 emacs_close (xforkin
);
2140 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2144 emacs_write (1, "Couldn't open the pty terminal ", 31);
2145 emacs_write (1, pty_name
, strlen (pty_name
));
2146 emacs_write (1, "\n", 1);
2151 #endif /* not DONT_REOPEN_PTY */
2153 #ifdef SETUP_SLAVE_PTY
2158 #endif /* SETUP_SLAVE_PTY */
2160 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2161 Now reenable it in the child, so it will die when we want it to. */
2163 signal (SIGHUP
, SIG_DFL
);
2165 #endif /* HAVE_PTYS */
2167 signal (SIGINT
, SIG_DFL
);
2168 signal (SIGQUIT
, SIG_DFL
);
2170 /* Stop blocking signals in the child. */
2171 #ifdef POSIX_SIGNALS
2172 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2173 #else /* !POSIX_SIGNALS */
2175 #if defined (BSD_SYSTEM) || defined (HPUX)
2176 sigsetmask (SIGEMPTYMASK
);
2177 #else /* ordinary USG */
2179 signal (SIGCHLD
, sigchld
);
2181 #endif /* ordinary USG */
2182 #endif /* SIGCHLD */
2183 #endif /* !POSIX_SIGNALS */
2186 child_setup_tty (xforkout
);
2188 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2189 new_argv
, 1, current_dir
);
2190 #else /* not WINDOWSNT */
2192 emacs_close (wait_child_setup
[0]);
2194 child_setup (xforkin
, xforkout
, xforkout
,
2195 new_argv
, 1, current_dir
);
2196 #endif /* not WINDOWSNT */
2198 environ
= save_environ
;
2203 /* This runs in the Emacs process. */
2207 emacs_close (forkin
);
2208 if (forkin
!= forkout
&& forkout
>= 0)
2209 emacs_close (forkout
);
2213 /* vfork succeeded. */
2214 XPROCESS (process
)->pid
= pid
;
2217 register_child (pid
, inchannel
);
2218 #endif /* WINDOWSNT */
2220 /* If the subfork execv fails, and it exits,
2221 this close hangs. I don't know why.
2222 So have an interrupt jar it loose. */
2224 struct atimer
*timer
;
2228 EMACS_SET_SECS_USECS (offset
, 1, 0);
2229 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2232 emacs_close (forkin
);
2234 cancel_atimer (timer
);
2238 if (forkin
!= forkout
&& forkout
>= 0)
2239 emacs_close (forkout
);
2243 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2246 XPROCESS (process
)->tty_name
= Qnil
;
2248 #if !defined (WINDOWSNT) && defined (FD_CLOEXEC)
2249 /* Wait for child_setup to complete in case that vfork is
2250 actually defined as fork. The descriptor wait_child_setup[1]
2251 of a pipe is closed at the child side either by close-on-exec
2252 on successful execvp or the _exit call in child_setup. */
2256 emacs_close (wait_child_setup
[1]);
2257 emacs_read (wait_child_setup
[0], &dummy
, 1);
2258 emacs_close (wait_child_setup
[0]);
2263 /* Restore the signal state whether vfork succeeded or not.
2264 (We will signal an error, below, if it failed.) */
2265 #ifdef POSIX_SIGNALS
2266 #ifdef HAVE_WORKING_VFORK
2267 /* Restore the parent's signal handlers. */
2268 sigaction (SIGINT
, &sigint_action
, 0);
2269 sigaction (SIGQUIT
, &sigquit_action
, 0);
2271 sigaction (SIGHUP
, &sighup_action
, 0);
2273 #endif /* HAVE_WORKING_VFORK */
2274 /* Stop blocking signals in the parent. */
2275 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2276 #else /* !POSIX_SIGNALS */
2278 #if defined (BSD_SYSTEM) || defined (HPUX)
2279 sigsetmask (SIGEMPTYMASK
);
2280 #else /* ordinary USG */
2282 signal (SIGCHLD
, sigchld
);
2283 /* Now really handle any of these signals
2284 that came in during this function. */
2285 if (sigchld_deferred
)
2286 kill (getpid (), SIGCHLD
);
2288 #endif /* ordinary USG */
2289 #endif /* SIGCHLD */
2290 #endif /* !POSIX_SIGNALS */
2292 /* Now generate the error if vfork failed. */
2294 report_file_error ("Doing vfork", Qnil
);
2298 create_pty (process
)
2299 Lisp_Object process
;
2301 int inchannel
, outchannel
;
2303 /* Use volatile to protect variables from being clobbered by longjmp. */
2304 volatile int forkin
, forkout
;
2305 volatile int pty_flag
= 0;
2307 inchannel
= outchannel
= -1;
2310 if (!NILP (Vprocess_connection_type
))
2311 outchannel
= inchannel
= allocate_pty ();
2315 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
2316 /* On most USG systems it does not work to open the pty's tty here,
2317 then close it and reopen it in the child. */
2319 /* Don't let this terminal become our controlling terminal
2320 (in case we don't have one). */
2321 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
2323 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
2326 report_file_error ("Opening pty", Qnil
);
2327 #if defined (DONT_REOPEN_PTY)
2328 /* In the case that vfork is defined as fork, the parent process
2329 (Emacs) may send some data before the child process completes
2330 tty options setup. So we setup tty before forking. */
2331 child_setup_tty (forkout
);
2332 #endif /* DONT_REOPEN_PTY */
2334 forkin
= forkout
= -1;
2335 #endif /* not USG, or USG_SUBTTY_WORKS */
2338 #endif /* HAVE_PTYS */
2341 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
2342 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
2345 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
2346 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
2350 /* Record this as an active process, with its channels.
2351 As a result, child_setup will close Emacs's side of the pipes. */
2352 chan_process
[inchannel
] = process
;
2353 XPROCESS (process
)->infd
= inchannel
;
2354 XPROCESS (process
)->outfd
= outchannel
;
2356 /* Previously we recorded the tty descriptor used in the subprocess.
2357 It was only used for getting the foreground tty process, so now
2358 we just reopen the device (see emacs_get_tty_pgrp) as this is
2359 more portable (see USG_SUBTTY_WORKS above). */
2361 XPROCESS (process
)->pty_flag
= pty_flag
;
2362 XPROCESS (process
)->status
= Qrun
;
2363 setup_process_coding_systems (process
);
2365 FD_SET (inchannel
, &input_wait_mask
);
2366 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2367 if (inchannel
> max_process_desc
)
2368 max_process_desc
= inchannel
;
2370 XPROCESS (process
)->pid
= -2;
2373 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2376 XPROCESS (process
)->tty_name
= Qnil
;
2382 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2383 The address family of sa is not included in the result. */
2386 conv_sockaddr_to_lisp (sa
, len
)
2387 struct sockaddr
*sa
;
2390 Lisp_Object address
;
2393 register struct Lisp_Vector
*p
;
2395 /* Workaround for a bug in getsockname on BSD: Names bound to
2396 sockets in the UNIX domain are inaccessible; getsockname returns
2397 a zero length name. */
2398 if (len
< OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
))
2399 return empty_unibyte_string
;
2401 switch (sa
->sa_family
)
2405 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2406 len
= sizeof (sin
->sin_addr
) + 1;
2407 address
= Fmake_vector (make_number (len
), Qnil
);
2408 p
= XVECTOR (address
);
2409 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2410 cp
= (unsigned char *) &sin
->sin_addr
;
2416 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2417 uint16_t *ip6
= (uint16_t *) &sin6
->sin6_addr
;
2418 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2419 address
= Fmake_vector (make_number (len
), Qnil
);
2420 p
= XVECTOR (address
);
2421 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2422 for (i
= 0; i
< len
; i
++)
2423 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2427 #ifdef HAVE_LOCAL_SOCKETS
2430 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2431 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2432 if (sockun
->sun_path
[i
] == 0)
2434 return make_unibyte_string (sockun
->sun_path
, i
);
2438 len
-= OFFSETOF (struct sockaddr
, sa_family
) + sizeof (sa
->sa_family
);
2439 address
= Fcons (make_number (sa
->sa_family
),
2440 Fmake_vector (make_number (len
), Qnil
));
2441 p
= XVECTOR (XCDR (address
));
2442 cp
= (unsigned char *) &sa
->sa_family
+ sizeof (sa
->sa_family
);
2448 p
->contents
[i
++] = make_number (*cp
++);
2454 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2457 get_lisp_to_sockaddr_size (address
, familyp
)
2458 Lisp_Object address
;
2461 register struct Lisp_Vector
*p
;
2463 if (VECTORP (address
))
2465 p
= XVECTOR (address
);
2469 return sizeof (struct sockaddr_in
);
2472 else if (p
->size
== 9)
2474 *familyp
= AF_INET6
;
2475 return sizeof (struct sockaddr_in6
);
2479 #ifdef HAVE_LOCAL_SOCKETS
2480 else if (STRINGP (address
))
2482 *familyp
= AF_LOCAL
;
2483 return sizeof (struct sockaddr_un
);
2486 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2488 struct sockaddr
*sa
;
2489 *familyp
= XINT (XCAR (address
));
2490 p
= XVECTOR (XCDR (address
));
2491 return p
->size
+ sizeof (sa
->sa_family
);
2496 /* Convert an address object (vector or string) to an internal sockaddr.
2498 The address format has been basically validated by
2499 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2500 it could have come from user data. So if FAMILY is not valid,
2501 we return after zeroing *SA. */
2504 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2506 Lisp_Object address
;
2507 struct sockaddr
*sa
;
2510 register struct Lisp_Vector
*p
;
2511 register unsigned char *cp
= NULL
;
2516 if (VECTORP (address
))
2518 p
= XVECTOR (address
);
2519 if (family
== AF_INET
)
2521 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2522 len
= sizeof (sin
->sin_addr
) + 1;
2523 i
= XINT (p
->contents
[--len
]);
2524 sin
->sin_port
= htons (i
);
2525 cp
= (unsigned char *)&sin
->sin_addr
;
2526 sa
->sa_family
= family
;
2529 else if (family
== AF_INET6
)
2531 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2532 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2533 len
= sizeof (sin6
->sin6_addr
) + 1;
2534 i
= XINT (p
->contents
[--len
]);
2535 sin6
->sin6_port
= htons (i
);
2536 for (i
= 0; i
< len
; i
++)
2537 if (INTEGERP (p
->contents
[i
]))
2539 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2542 sa
->sa_family
= family
;
2547 else if (STRINGP (address
))
2549 #ifdef HAVE_LOCAL_SOCKETS
2550 if (family
== AF_LOCAL
)
2552 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2553 cp
= SDATA (address
);
2554 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2555 sockun
->sun_path
[i
] = *cp
++;
2556 sa
->sa_family
= family
;
2563 p
= XVECTOR (XCDR (address
));
2564 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2567 for (i
= 0; i
< len
; i
++)
2568 if (INTEGERP (p
->contents
[i
]))
2569 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2572 #ifdef DATAGRAM_SOCKETS
2573 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2575 doc
: /* Get the current datagram address associated with PROCESS. */)
2577 Lisp_Object process
;
2581 CHECK_PROCESS (process
);
2583 if (!DATAGRAM_CONN_P (process
))
2586 channel
= XPROCESS (process
)->infd
;
2587 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2588 datagram_address
[channel
].len
);
2591 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2593 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2594 Returns nil upon error setting address, ADDRESS otherwise. */)
2596 Lisp_Object process
, address
;
2601 CHECK_PROCESS (process
);
2603 if (!DATAGRAM_CONN_P (process
))
2606 channel
= XPROCESS (process
)->infd
;
2608 len
= get_lisp_to_sockaddr_size (address
, &family
);
2609 if (datagram_address
[channel
].len
!= len
)
2611 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2617 static const struct socket_options
{
2618 /* The name of this option. Should be lowercase version of option
2619 name without SO_ prefix. */
2621 /* Option level SOL_... */
2623 /* Option number SO_... */
2625 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2626 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2627 } socket_options
[] =
2629 #ifdef SO_BINDTODEVICE
2630 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2633 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2636 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2639 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2642 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2645 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2648 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2651 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2653 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2656 /* Set option OPT to value VAL on socket S.
2658 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2659 Signals an error if setting a known option fails.
2663 set_socket_option (s
, opt
, val
)
2665 Lisp_Object opt
, val
;
2668 const struct socket_options
*sopt
;
2673 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2674 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2675 if (strcmp (name
, sopt
->name
) == 0)
2678 switch (sopt
->opttype
)
2683 optval
= NILP (val
) ? 0 : 1;
2684 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2685 &optval
, sizeof (optval
));
2693 optval
= XINT (val
);
2695 error ("Bad option value for %s", name
);
2696 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2697 &optval
, sizeof (optval
));
2701 #ifdef SO_BINDTODEVICE
2704 char devname
[IFNAMSIZ
+1];
2706 /* This is broken, at least in the Linux 2.4 kernel.
2707 To unbind, the arg must be a zero integer, not the empty string.
2708 This should work on all systems. KFS. 2003-09-23. */
2709 bzero (devname
, sizeof devname
);
2712 char *arg
= (char *) SDATA (val
);
2713 int len
= min (strlen (arg
), IFNAMSIZ
);
2714 bcopy (arg
, devname
, len
);
2716 else if (!NILP (val
))
2717 error ("Bad option value for %s", name
);
2718 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2727 struct linger linger
;
2730 linger
.l_linger
= 0;
2732 linger
.l_linger
= XINT (val
);
2734 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2735 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2736 &linger
, sizeof (linger
));
2746 report_file_error ("Cannot set network option",
2747 Fcons (opt
, Fcons (val
, Qnil
)));
2748 return (1 << sopt
->optbit
);
2752 DEFUN ("set-network-process-option",
2753 Fset_network_process_option
, Sset_network_process_option
,
2755 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2756 See `make-network-process' for a list of options and values.
2757 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2758 OPTION is not a supported option, return nil instead; otherwise return t. */)
2759 (process
, option
, value
, no_error
)
2760 Lisp_Object process
, option
, value
;
2761 Lisp_Object no_error
;
2764 struct Lisp_Process
*p
;
2766 CHECK_PROCESS (process
);
2767 p
= XPROCESS (process
);
2768 if (!NETCONN1_P (p
))
2769 error ("Process is not a network process");
2773 error ("Process is not running");
2775 if (set_socket_option (s
, option
, value
))
2777 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2781 if (NILP (no_error
))
2782 error ("Unknown or unsupported option");
2789 DEFUN ("serial-process-configure",
2790 Fserial_process_configure
,
2791 Sserial_process_configure
,
2793 doc
: /* Configure speed, bytesize, etc. of a serial process.
2795 Arguments are specified as keyword/argument pairs. Attributes that
2796 are not given are re-initialized from the process's current
2797 configuration (available via the function `process-contact') or set to
2798 reasonable default values. The following arguments are defined:
2804 -- Any of these arguments can be given to identify the process that is
2805 to be configured. If none of these arguments is given, the current
2806 buffer's process is used.
2808 :speed SPEED -- SPEED is the speed of the serial port in bits per
2809 second, also called baud rate. Any value can be given for SPEED, but
2810 most serial ports work only at a few defined values between 1200 and
2811 115200, with 9600 being the most common value. If SPEED is nil, the
2812 serial port is not configured any further, i.e., all other arguments
2813 are ignored. This may be useful for special serial ports such as
2814 Bluetooth-to-serial converters which can only be configured through AT
2815 commands. A value of nil for SPEED can be used only when passed
2816 through `make-serial-process' or `serial-term'.
2818 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2819 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2821 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2822 `odd' (use odd parity), or the symbol `even' (use even parity). If
2823 PARITY is not given, no parity is used.
2825 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2826 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2827 is not given or nil, 1 stopbit is used.
2829 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2830 flowcontrol to be used, which is either nil (don't use flowcontrol),
2831 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2832 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2833 flowcontrol is used.
2835 `serial-process-configure' is called by `make-serial-process' for the
2836 initial configuration of the serial port.
2840 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2842 \(serial-process-configure
2843 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2845 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2847 usage: (serial-process-configure &rest ARGS) */)
2852 struct Lisp_Process
*p
;
2853 Lisp_Object contact
= Qnil
;
2854 Lisp_Object proc
= Qnil
;
2855 struct gcpro gcpro1
;
2857 contact
= Flist (nargs
, args
);
2860 proc
= Fplist_get (contact
, QCprocess
);
2862 proc
= Fplist_get (contact
, QCname
);
2864 proc
= Fplist_get (contact
, QCbuffer
);
2866 proc
= Fplist_get (contact
, QCport
);
2867 proc
= get_process (proc
);
2868 p
= XPROCESS (proc
);
2869 if (!EQ (p
->type
, Qserial
))
2870 error ("Not a serial process");
2872 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2878 serial_configure (p
, contact
);
2884 /* Used by make-serial-process to recover from errors. */
2885 Lisp_Object
make_serial_process_unwind (Lisp_Object proc
)
2887 if (!PROCESSP (proc
))
2889 remove_process (proc
);
2893 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2895 doc
: /* Create and return a serial port process.
2897 In Emacs, serial port connections are represented by process objects,
2898 so input and output work as for subprocesses, and `delete-process'
2899 closes a serial port connection. However, a serial process has no
2900 process id, it cannot be signaled, and the status codes are different
2901 from normal processes.
2903 `make-serial-process' creates a process and a buffer, on which you
2904 probably want to use `process-send-string'. Try \\[serial-term] for
2905 an interactive terminal. See below for examples.
2907 Arguments are specified as keyword/argument pairs. The following
2908 arguments are defined:
2910 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2911 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2912 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2913 the backslashes in strings).
2915 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2916 which is called by `make-serial-process'.
2918 :name NAME -- NAME is the name of the process. If NAME is not given,
2919 the value of PORT is used.
2921 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2922 with the process. Process output goes at the end of that buffer,
2923 unless you specify an output stream or filter function to handle the
2924 output. If BUFFER is not given, the value of NAME is used.
2926 :coding CODING -- If CODING is a symbol, it specifies the coding
2927 system used for both reading and writing for this process. If CODING
2928 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2929 ENCODING is used for writing.
2931 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2932 the process is running. If BOOL is not given, query before exiting.
2934 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2935 In the stopped state, a serial process does not accept incoming data,
2936 but you can send outgoing data. The stopped state is cleared by
2937 `continue-process' and set by `stop-process'.
2939 :filter FILTER -- Install FILTER as the process filter.
2941 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2943 :plist PLIST -- Install PLIST as the initial plist of the process.
2950 -- These arguments are handled by `serial-process-configure', which is
2951 called by `make-serial-process'.
2953 The original argument list, possibly modified by later configuration,
2954 is available via the function `process-contact'.
2958 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2960 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2962 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2964 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2966 usage: (make-serial-process &rest ARGS) */)
2972 Lisp_Object proc
, contact
, port
;
2973 struct Lisp_Process
*p
;
2974 struct gcpro gcpro1
;
2975 Lisp_Object name
, buffer
;
2976 Lisp_Object tem
, val
;
2977 int specpdl_count
= -1;
2982 contact
= Flist (nargs
, args
);
2985 port
= Fplist_get (contact
, QCport
);
2987 error ("No port specified");
2988 CHECK_STRING (port
);
2990 if (NILP (Fplist_member (contact
, QCspeed
)))
2991 error (":speed not specified");
2992 if (!NILP (Fplist_get (contact
, QCspeed
)))
2993 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2995 name
= Fplist_get (contact
, QCname
);
2998 CHECK_STRING (name
);
2999 proc
= make_process (name
);
3000 specpdl_count
= SPECPDL_INDEX ();
3001 record_unwind_protect (make_serial_process_unwind
, proc
);
3002 p
= XPROCESS (proc
);
3004 fd
= serial_open ((char*) SDATA (port
));
3007 if (fd
> max_process_desc
)
3008 max_process_desc
= fd
;
3009 chan_process
[fd
] = proc
;
3011 buffer
= Fplist_get (contact
, QCbuffer
);
3014 buffer
= Fget_buffer_create (buffer
);
3017 p
->childp
= contact
;
3018 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3020 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
3021 p
->filter
= Fplist_get (contact
, QCfilter
);
3023 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3024 p
->kill_without_query
= 1;
3025 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
3029 if (!EQ (p
->command
, Qt
))
3031 FD_SET (fd
, &input_wait_mask
);
3032 FD_SET (fd
, &non_keyboard_wait_mask
);
3035 if (BUFFERP (buffer
))
3037 set_marker_both (p
->mark
, buffer
,
3038 BUF_ZV (XBUFFER (buffer
)),
3039 BUF_ZV_BYTE (XBUFFER (buffer
)));
3042 tem
= Fplist_member (contact
, QCcoding
);
3043 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3049 val
= XCAR (XCDR (tem
));
3053 else if (!NILP (Vcoding_system_for_read
))
3054 val
= Vcoding_system_for_read
;
3055 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3056 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3058 p
->decode_coding_system
= val
;
3063 val
= XCAR (XCDR (tem
));
3067 else if (!NILP (Vcoding_system_for_write
))
3068 val
= Vcoding_system_for_write
;
3069 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3070 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3072 p
->encode_coding_system
= val
;
3074 setup_process_coding_systems (proc
);
3075 p
->decoding_buf
= make_uninit_string (0);
3076 p
->decoding_carryover
= 0;
3077 p
->encoding_buf
= make_uninit_string (0);
3078 p
->inherit_coding_system_flag
3079 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3081 Fserial_process_configure(nargs
, args
);
3083 specpdl_ptr
= specpdl
+ specpdl_count
;
3088 #endif /* HAVE_SERIAL */
3090 /* Create a network stream/datagram client/server process. Treated
3091 exactly like a normal process when reading and writing. Primary
3092 differences are in status display and process deletion. A network
3093 connection has no PID; you cannot signal it. All you can do is
3094 stop/continue it and deactivate/close it via delete-process */
3096 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3098 doc
: /* Create and return a network server or client process.
3100 In Emacs, network connections are represented by process objects, so
3101 input and output work as for subprocesses and `delete-process' closes
3102 a network connection. However, a network process has no process id,
3103 it cannot be signaled, and the status codes are different from normal
3106 Arguments are specified as keyword/argument pairs. The following
3107 arguments are defined:
3109 :name NAME -- NAME is name for process. It is modified if necessary
3112 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3113 with the process. Process output goes at end of that buffer, unless
3114 you specify an output stream or filter function to handle the output.
3115 BUFFER may be also nil, meaning that this process is not associated
3118 :host HOST -- HOST is name of the host to connect to, or its IP
3119 address. The symbol `local' specifies the local host. If specified
3120 for a server process, it must be a valid name or address for the local
3121 host, and only clients connecting to that address will be accepted.
3123 :service SERVICE -- SERVICE is name of the service desired, or an
3124 integer specifying a port number to connect to. If SERVICE is t,
3125 a random port number is selected for the server. (If Emacs was
3126 compiled with getaddrinfo, a port number can also be specified as a
3127 string, e.g. "80", as well as an integer. This is not portable.)
3129 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3130 stream type connection, `datagram' creates a datagram type connection,
3131 `seqpacket' creates a reliable datagram connection.
3133 :family FAMILY -- FAMILY is the address (and protocol) family for the
3134 service specified by HOST and SERVICE. The default (nil) is to use
3135 whatever address family (IPv4 or IPv6) that is defined for the host
3136 and port number specified by HOST and SERVICE. Other address families
3138 local -- for a local (i.e. UNIX) address specified by SERVICE.
3139 ipv4 -- use IPv4 address family only.
3140 ipv6 -- use IPv6 address family only.
3142 :local ADDRESS -- ADDRESS is the local address used for the connection.
3143 This parameter is ignored when opening a client process. When specified
3144 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3146 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3147 connection. This parameter is ignored when opening a stream server
3148 process. For a datagram server process, it specifies the initial
3149 setting of the remote datagram address. When specified for a client
3150 process, the FAMILY, HOST, and SERVICE args are ignored.
3152 The format of ADDRESS depends on the address family:
3153 - An IPv4 address is represented as an vector of integers [A B C D P]
3154 corresponding to numeric IP address A.B.C.D and port number P.
3155 - A local address is represented as a string with the address in the
3156 local address space.
3157 - An "unsupported family" address is represented by a cons (F . AV)
3158 where F is the family number and AV is a vector containing the socket
3159 address data with one element per address data byte. Do not rely on
3160 this format in portable code, as it may depend on implementation
3161 defined constants, data sizes, and data structure alignment.
3163 :coding CODING -- If CODING is a symbol, it specifies the coding
3164 system used for both reading and writing for this process. If CODING
3165 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3166 ENCODING is used for writing.
3168 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
3169 return without waiting for the connection to complete; instead, the
3170 sentinel function will be called with second arg matching "open" (if
3171 successful) or "failed" when the connect completes. Default is to use
3172 a blocking connect (i.e. wait) for stream type connections.
3174 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3175 running when Emacs is exited.
3177 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3178 In the stopped state, a server process does not accept new
3179 connections, and a client process does not handle incoming traffic.
3180 The stopped state is cleared by `continue-process' and set by
3183 :filter FILTER -- Install FILTER as the process filter.
3185 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3186 process filter are multibyte, otherwise they are unibyte.
3187 If this keyword is not specified, the strings are multibyte if
3188 `default-enable-multibyte-characters' is non-nil.
3190 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3192 :log LOG -- Install LOG as the server process log function. This
3193 function is called when the server accepts a network connection from a
3194 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3195 is the server process, CLIENT is the new process for the connection,
3196 and MESSAGE is a string.
3198 :plist PLIST -- Install PLIST as the new process' initial plist.
3200 :server QLEN -- if QLEN is non-nil, create a server process for the
3201 specified FAMILY, SERVICE, and connection type (stream or datagram).
3202 If QLEN is an integer, it is used as the max. length of the server's
3203 pending connection queue (also known as the backlog); the default
3204 queue length is 5. Default is to create a client process.
3206 The following network options can be specified for this connection:
3208 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3209 :dontroute BOOL -- Only send to directly connected hosts.
3210 :keepalive BOOL -- Send keep-alive messages on network stream.
3211 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3212 :oobinline BOOL -- Place out-of-band data in receive data stream.
3213 :priority INT -- Set protocol defined priority for sent packets.
3214 :reuseaddr BOOL -- Allow reusing a recently used local address
3215 (this is allowed by default for a server process).
3216 :bindtodevice NAME -- bind to interface NAME. Using this may require
3217 special privileges on some systems.
3219 Consult the relevant system programmer's manual pages for more
3220 information on using these options.
3223 A server process will listen for and accept connections from clients.
3224 When a client connection is accepted, a new network process is created
3225 for the connection with the following parameters:
3227 - The client's process name is constructed by concatenating the server
3228 process' NAME and a client identification string.
3229 - If the FILTER argument is non-nil, the client process will not get a
3230 separate process buffer; otherwise, the client's process buffer is a newly
3231 created buffer named after the server process' BUFFER name or process
3232 NAME concatenated with the client identification string.
3233 - The connection type and the process filter and sentinel parameters are
3234 inherited from the server process' TYPE, FILTER and SENTINEL.
3235 - The client process' contact info is set according to the client's
3236 addressing information (typically an IP address and a port number).
3237 - The client process' plist is initialized from the server's plist.
3239 Notice that the FILTER and SENTINEL args are never used directly by
3240 the server process. Also, the BUFFER argument is not used directly by
3241 the server process, but via the optional :log function, accepted (and
3242 failed) connections may be logged in the server process' buffer.
3244 The original argument list, modified with the actual connection
3245 information, is available via the `process-contact' function.
3247 usage: (make-network-process &rest ARGS) */)
3253 Lisp_Object contact
;
3254 struct Lisp_Process
*p
;
3255 #ifdef HAVE_GETADDRINFO
3256 struct addrinfo ai
, *res
, *lres
;
3257 struct addrinfo hints
;
3258 char *portstring
, portbuf
[128];
3259 #else /* HAVE_GETADDRINFO */
3260 struct _emacs_addrinfo
3266 struct sockaddr
*ai_addr
;
3267 struct _emacs_addrinfo
*ai_next
;
3269 #endif /* HAVE_GETADDRINFO */
3270 struct sockaddr_in address_in
;
3271 #ifdef HAVE_LOCAL_SOCKETS
3272 struct sockaddr_un address_un
;
3277 int s
= -1, outch
, inch
;
3278 struct gcpro gcpro1
;
3279 int count
= SPECPDL_INDEX ();
3281 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
3283 Lisp_Object name
, buffer
, host
, service
, address
;
3284 Lisp_Object filter
, sentinel
;
3285 int is_non_blocking_client
= 0;
3286 int is_server
= 0, backlog
= 5;
3293 /* Save arguments for process-contact and clone-process. */
3294 contact
= Flist (nargs
, args
);
3298 /* Ensure socket support is loaded if available. */
3299 init_winsock (TRUE
);
3302 /* :type TYPE (nil: stream, datagram */
3303 tem
= Fplist_get (contact
, QCtype
);
3305 socktype
= SOCK_STREAM
;
3306 #ifdef DATAGRAM_SOCKETS
3307 else if (EQ (tem
, Qdatagram
))
3308 socktype
= SOCK_DGRAM
;
3310 #ifdef HAVE_SEQPACKET
3311 else if (EQ (tem
, Qseqpacket
))
3312 socktype
= SOCK_SEQPACKET
;
3315 error ("Unsupported connection type");
3318 tem
= Fplist_get (contact
, QCserver
);
3321 /* Don't support network sockets when non-blocking mode is
3322 not available, since a blocked Emacs is not useful. */
3323 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
3324 error ("Network servers not supported");
3328 backlog
= XINT (tem
);
3332 /* Make QCaddress an alias for :local (server) or :remote (client). */
3333 QCaddress
= is_server
? QClocal
: QCremote
;
3336 if (!is_server
&& socktype
!= SOCK_DGRAM
3337 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
3339 #ifndef NON_BLOCKING_CONNECT
3340 error ("Non-blocking connect not supported");
3342 is_non_blocking_client
= 1;
3346 name
= Fplist_get (contact
, QCname
);
3347 buffer
= Fplist_get (contact
, QCbuffer
);
3348 filter
= Fplist_get (contact
, QCfilter
);
3349 sentinel
= Fplist_get (contact
, QCsentinel
);
3351 CHECK_STRING (name
);
3353 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
3354 ai
.ai_socktype
= socktype
;
3359 /* :local ADDRESS or :remote ADDRESS */
3360 address
= Fplist_get (contact
, QCaddress
);
3361 if (!NILP (address
))
3363 host
= service
= Qnil
;
3365 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
3366 error ("Malformed :address");
3367 ai
.ai_family
= family
;
3368 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
3369 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3373 /* :family FAMILY -- nil (for Inet), local, or integer. */
3374 tem
= Fplist_get (contact
, QCfamily
);
3377 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3383 #ifdef HAVE_LOCAL_SOCKETS
3384 else if (EQ (tem
, Qlocal
))
3388 else if (EQ (tem
, Qipv6
))
3391 else if (EQ (tem
, Qipv4
))
3393 else if (INTEGERP (tem
))
3394 family
= XINT (tem
);
3396 error ("Unknown address family");
3398 ai
.ai_family
= family
;
3400 /* :service SERVICE -- string, integer (port number), or t (random port). */
3401 service
= Fplist_get (contact
, QCservice
);
3403 #ifdef HAVE_LOCAL_SOCKETS
3404 if (family
== AF_LOCAL
)
3406 /* Host is not used. */
3408 CHECK_STRING (service
);
3409 bzero (&address_un
, sizeof address_un
);
3410 address_un
.sun_family
= AF_LOCAL
;
3411 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3412 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3413 ai
.ai_addrlen
= sizeof address_un
;
3418 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3419 host
= Fplist_get (contact
, QChost
);
3422 if (EQ (host
, Qlocal
))
3423 host
= build_string ("localhost");
3424 CHECK_STRING (host
);
3427 /* Slow down polling to every ten seconds.
3428 Some kernels have a bug which causes retrying connect to fail
3429 after a connect. Polling can interfere with gethostbyname too. */
3430 #ifdef POLL_FOR_INPUT
3431 if (socktype
!= SOCK_DGRAM
)
3433 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3434 bind_polling_period (10);
3438 #ifdef HAVE_GETADDRINFO
3439 /* If we have a host, use getaddrinfo to resolve both host and service.
3440 Otherwise, use getservbyname to lookup the service. */
3444 /* SERVICE can either be a string or int.
3445 Convert to a C string for later use by getaddrinfo. */
3446 if (EQ (service
, Qt
))
3448 else if (INTEGERP (service
))
3450 sprintf (portbuf
, "%ld", (long) XINT (service
));
3451 portstring
= portbuf
;
3455 CHECK_STRING (service
);
3456 portstring
= SDATA (service
);
3461 memset (&hints
, 0, sizeof (hints
));
3463 hints
.ai_family
= family
;
3464 hints
.ai_socktype
= socktype
;
3465 hints
.ai_protocol
= 0;
3467 #ifdef HAVE_RES_INIT
3471 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3473 #ifdef HAVE_GAI_STRERROR
3474 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3476 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3482 #endif /* HAVE_GETADDRINFO */
3484 /* We end up here if getaddrinfo is not defined, or in case no hostname
3485 has been specified (e.g. for a local server process). */
3487 if (EQ (service
, Qt
))
3489 else if (INTEGERP (service
))
3490 port
= htons ((unsigned short) XINT (service
));
3493 struct servent
*svc_info
;
3494 CHECK_STRING (service
);
3495 svc_info
= getservbyname (SDATA (service
),
3496 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3498 error ("Unknown service: %s", SDATA (service
));
3499 port
= svc_info
->s_port
;
3502 bzero (&address_in
, sizeof address_in
);
3503 address_in
.sin_family
= family
;
3504 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3505 address_in
.sin_port
= port
;
3507 #ifndef HAVE_GETADDRINFO
3510 struct hostent
*host_info_ptr
;
3512 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3513 as it may `hang' Emacs for a very long time. */
3517 #ifdef HAVE_RES_INIT
3521 host_info_ptr
= gethostbyname (SDATA (host
));
3526 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3527 host_info_ptr
->h_length
);
3528 family
= host_info_ptr
->h_addrtype
;
3529 address_in
.sin_family
= family
;
3532 /* Attempt to interpret host as numeric inet address */
3534 unsigned long numeric_addr
;
3535 numeric_addr
= inet_addr ((char *) SDATA (host
));
3536 if (numeric_addr
== -1)
3537 error ("Unknown host \"%s\"", SDATA (host
));
3539 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3540 sizeof (address_in
.sin_addr
));
3544 #endif /* not HAVE_GETADDRINFO */
3546 ai
.ai_family
= family
;
3547 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3548 ai
.ai_addrlen
= sizeof address_in
;
3552 /* Do this in case we never enter the for-loop below. */
3553 count1
= SPECPDL_INDEX ();
3556 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3562 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3569 #ifdef DATAGRAM_SOCKETS
3570 if (!is_server
&& socktype
== SOCK_DGRAM
)
3572 #endif /* DATAGRAM_SOCKETS */
3574 #ifdef NON_BLOCKING_CONNECT
3575 if (is_non_blocking_client
)
3578 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3580 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3592 /* Make us close S if quit. */
3593 record_unwind_protect (close_file_unwind
, make_number (s
));
3595 /* Parse network options in the arg list.
3596 We simply ignore anything which isn't a known option (including other keywords).
3597 An error is signaled if setting a known option fails. */
3598 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3599 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3603 /* Configure as a server socket. */
3605 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3606 explicit :reuseaddr key to override this. */
3607 #ifdef HAVE_LOCAL_SOCKETS
3608 if (family
!= AF_LOCAL
)
3610 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3613 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3614 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3617 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3618 report_file_error ("Cannot bind server socket", Qnil
);
3620 #ifdef HAVE_GETSOCKNAME
3621 if (EQ (service
, Qt
))
3623 struct sockaddr_in sa1
;
3624 int len1
= sizeof (sa1
);
3625 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3627 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3628 service
= make_number (ntohs (sa1
.sin_port
));
3629 contact
= Fplist_put (contact
, QCservice
, service
);
3634 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3635 report_file_error ("Cannot listen on server socket", Qnil
);
3643 /* This turns off all alarm-based interrupts; the
3644 bind_polling_period call above doesn't always turn all the
3645 short-interval ones off, especially if interrupt_input is
3648 It'd be nice to be able to control the connect timeout
3649 though. Would non-blocking connect calls be portable?
3651 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3653 turn_on_atimers (0);
3655 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3658 turn_on_atimers (1);
3660 if (ret
== 0 || xerrno
== EISCONN
)
3662 /* The unwind-protect will be discarded afterwards.
3663 Likewise for immediate_quit. */
3667 #ifdef NON_BLOCKING_CONNECT
3669 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3673 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3681 /* Discard the unwind protect closing S. */
3682 specpdl_ptr
= specpdl
+ count1
;
3686 if (xerrno
== EINTR
)
3692 #ifdef DATAGRAM_SOCKETS
3693 if (socktype
== SOCK_DGRAM
)
3695 if (datagram_address
[s
].sa
)
3697 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3698 datagram_address
[s
].len
= lres
->ai_addrlen
;
3702 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3703 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3706 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3707 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3708 conv_lisp_to_sockaddr (rfamily
, remote
,
3709 datagram_address
[s
].sa
, rlen
);
3713 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3716 contact
= Fplist_put (contact
, QCaddress
,
3717 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3718 #ifdef HAVE_GETSOCKNAME
3721 struct sockaddr_in sa1
;
3722 int len1
= sizeof (sa1
);
3723 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3724 contact
= Fplist_put (contact
, QClocal
,
3725 conv_sockaddr_to_lisp (&sa1
, len1
));
3732 #ifdef HAVE_GETADDRINFO
3741 /* Discard the unwind protect for closing S, if any. */
3742 specpdl_ptr
= specpdl
+ count1
;
3744 /* Unwind bind_polling_period and request_sigio. */
3745 unbind_to (count
, Qnil
);
3749 /* If non-blocking got this far - and failed - assume non-blocking is
3750 not supported after all. This is probably a wrong assumption, but
3751 the normal blocking calls to open-network-stream handles this error
3753 if (is_non_blocking_client
)
3758 report_file_error ("make server process failed", contact
);
3760 report_file_error ("make client process failed", contact
);
3767 buffer
= Fget_buffer_create (buffer
);
3768 proc
= make_process (name
);
3770 chan_process
[inch
] = proc
;
3773 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3776 fcntl (inch
, F_SETFL
, O_NDELAY
);
3780 p
= XPROCESS (proc
);
3782 p
->childp
= contact
;
3783 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3787 p
->sentinel
= sentinel
;
3789 p
->log
= Fplist_get (contact
, QClog
);
3790 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3791 p
->kill_without_query
= 1;
3792 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3797 if (is_server
&& socktype
!= SOCK_DGRAM
)
3798 p
->status
= Qlisten
;
3800 /* Make the process marker point into the process buffer (if any). */
3801 if (BUFFERP (buffer
))
3802 set_marker_both (p
->mark
, buffer
,
3803 BUF_ZV (XBUFFER (buffer
)),
3804 BUF_ZV_BYTE (XBUFFER (buffer
)));
3806 #ifdef NON_BLOCKING_CONNECT
3807 if (is_non_blocking_client
)
3809 /* We may get here if connect did succeed immediately. However,
3810 in that case, we still need to signal this like a non-blocking
3812 p
->status
= Qconnect
;
3813 if (!FD_ISSET (inch
, &connect_wait_mask
))
3815 FD_SET (inch
, &connect_wait_mask
);
3816 num_pending_connects
++;
3821 /* A server may have a client filter setting of Qt, but it must
3822 still listen for incoming connects unless it is stopped. */
3823 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3824 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3826 FD_SET (inch
, &input_wait_mask
);
3827 FD_SET (inch
, &non_keyboard_wait_mask
);
3830 if (inch
> max_process_desc
)
3831 max_process_desc
= inch
;
3833 tem
= Fplist_member (contact
, QCcoding
);
3834 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3835 tem
= Qnil
; /* No error message (too late!). */
3838 /* Setup coding systems for communicating with the network stream. */
3839 struct gcpro gcpro1
;
3840 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3841 Lisp_Object coding_systems
= Qt
;
3842 Lisp_Object args
[5], val
;
3846 val
= XCAR (XCDR (tem
));
3850 else if (!NILP (Vcoding_system_for_read
))
3851 val
= Vcoding_system_for_read
;
3852 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3853 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3854 /* We dare not decode end-of-line format by setting VAL to
3855 Qraw_text, because the existing Emacs Lisp libraries
3856 assume that they receive bare code including a sequene of
3861 if (NILP (host
) || NILP (service
))
3862 coding_systems
= Qnil
;
3865 args
[0] = Qopen_network_stream
, args
[1] = name
,
3866 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3868 coding_systems
= Ffind_operation_coding_system (5, args
);
3871 if (CONSP (coding_systems
))
3872 val
= XCAR (coding_systems
);
3873 else if (CONSP (Vdefault_process_coding_system
))
3874 val
= XCAR (Vdefault_process_coding_system
);
3878 p
->decode_coding_system
= val
;
3882 val
= XCAR (XCDR (tem
));
3886 else if (!NILP (Vcoding_system_for_write
))
3887 val
= Vcoding_system_for_write
;
3888 else if (NILP (current_buffer
->enable_multibyte_characters
))
3892 if (EQ (coding_systems
, Qt
))
3894 if (NILP (host
) || NILP (service
))
3895 coding_systems
= Qnil
;
3898 args
[0] = Qopen_network_stream
, args
[1] = name
,
3899 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3901 coding_systems
= Ffind_operation_coding_system (5, args
);
3905 if (CONSP (coding_systems
))
3906 val
= XCDR (coding_systems
);
3907 else if (CONSP (Vdefault_process_coding_system
))
3908 val
= XCDR (Vdefault_process_coding_system
);
3912 p
->encode_coding_system
= val
;
3914 setup_process_coding_systems (proc
);
3916 p
->decoding_buf
= make_uninit_string (0);
3917 p
->decoding_carryover
= 0;
3918 p
->encoding_buf
= make_uninit_string (0);
3920 p
->inherit_coding_system_flag
3921 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3926 #endif /* HAVE_SOCKETS */
3929 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3932 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3933 doc
: /* Return an alist of all network interfaces and their network address.
3934 Each element is a cons, the car of which is a string containing the
3935 interface name, and the cdr is the network address in internal
3936 format; see the description of ADDRESS in `make-network-process'. */)
3939 struct ifconf ifconf
;
3940 struct ifreq
*ifreqs
= NULL
;
3945 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3951 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3952 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3959 ifconf
.ifc_len
= buf_size
;
3960 ifconf
.ifc_req
= ifreqs
;
3961 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3967 if (ifconf
.ifc_len
== buf_size
)
3971 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3974 while (--ifaces
>= 0)
3976 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3977 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3978 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3980 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3981 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3982 res
= Fcons (Fcons (build_string (namebuf
),
3983 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3984 sizeof (struct sockaddr
))),
3990 #endif /* SIOCGIFCONF */
3992 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3996 const char *flag_sym
;
3999 static const struct ifflag_def ifflag_table
[] = {
4003 #ifdef IFF_BROADCAST
4004 { IFF_BROADCAST
, "broadcast" },
4007 { IFF_DEBUG
, "debug" },
4010 { IFF_LOOPBACK
, "loopback" },
4012 #ifdef IFF_POINTOPOINT
4013 { IFF_POINTOPOINT
, "pointopoint" },
4016 { IFF_RUNNING
, "running" },
4019 { IFF_NOARP
, "noarp" },
4022 { IFF_PROMISC
, "promisc" },
4024 #ifdef IFF_NOTRAILERS
4025 { IFF_NOTRAILERS
, "notrailers" },
4028 { IFF_ALLMULTI
, "allmulti" },
4031 { IFF_MASTER
, "master" },
4034 { IFF_SLAVE
, "slave" },
4036 #ifdef IFF_MULTICAST
4037 { IFF_MULTICAST
, "multicast" },
4040 { IFF_PORTSEL
, "portsel" },
4042 #ifdef IFF_AUTOMEDIA
4043 { IFF_AUTOMEDIA
, "automedia" },
4046 { IFF_DYNAMIC
, "dynamic" },
4049 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
4052 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
4055 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
4058 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
4061 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
4066 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
4067 doc
: /* Return information about network interface named IFNAME.
4068 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4069 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4070 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
4071 FLAGS is the current flags of the interface. */)
4076 Lisp_Object res
= Qnil
;
4081 CHECK_STRING (ifname
);
4083 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
4084 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
4086 s
= socket (AF_INET
, SOCK_STREAM
, 0);
4091 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
4092 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4094 int flags
= rq
.ifr_flags
;
4095 const struct ifflag_def
*fp
;
4099 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4101 if (flags
& fp
->flag_bit
)
4103 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4104 flags
-= fp
->flag_bit
;
4107 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
4109 if (flags
& (1 << fnum
))
4111 elt
= Fcons (make_number (fnum
), elt
);
4116 res
= Fcons (elt
, res
);
4119 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
4120 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4122 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4123 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4127 for (n
= 0; n
< 6; n
++)
4128 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
4129 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4132 res
= Fcons (elt
, res
);
4135 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
4136 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4139 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4140 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4142 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4146 res
= Fcons (elt
, res
);
4149 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4150 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4153 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4156 res
= Fcons (elt
, res
);
4159 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
4160 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4163 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4166 res
= Fcons (elt
, res
);
4170 return any
? res
: Qnil
;
4173 #endif /* HAVE_SOCKETS */
4175 /* Turn off input and output for process PROC. */
4178 deactivate_process (proc
)
4181 register int inchannel
, outchannel
;
4182 register struct Lisp_Process
*p
= XPROCESS (proc
);
4184 inchannel
= p
->infd
;
4185 outchannel
= p
->outfd
;
4187 #ifdef ADAPTIVE_READ_BUFFERING
4188 if (p
->read_output_delay
> 0)
4190 if (--process_output_delay_count
< 0)
4191 process_output_delay_count
= 0;
4192 p
->read_output_delay
= 0;
4193 p
->read_output_skip
= 0;
4199 /* Beware SIGCHLD hereabouts. */
4200 flush_pending_output (inchannel
);
4201 emacs_close (inchannel
);
4202 if (outchannel
>= 0 && outchannel
!= inchannel
)
4203 emacs_close (outchannel
);
4207 #ifdef DATAGRAM_SOCKETS
4208 if (DATAGRAM_CHAN_P (inchannel
))
4210 xfree (datagram_address
[inchannel
].sa
);
4211 datagram_address
[inchannel
].sa
= 0;
4212 datagram_address
[inchannel
].len
= 0;
4215 chan_process
[inchannel
] = Qnil
;
4216 FD_CLR (inchannel
, &input_wait_mask
);
4217 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4218 #ifdef NON_BLOCKING_CONNECT
4219 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4221 FD_CLR (inchannel
, &connect_wait_mask
);
4222 if (--num_pending_connects
< 0)
4226 if (inchannel
== max_process_desc
)
4229 /* We just closed the highest-numbered process input descriptor,
4230 so recompute the highest-numbered one now. */
4231 max_process_desc
= 0;
4232 for (i
= 0; i
< MAXDESC
; i
++)
4233 if (!NILP (chan_process
[i
]))
4234 max_process_desc
= i
;
4239 /* Close all descriptors currently in use for communication
4240 with subprocess. This is used in a newly-forked subprocess
4241 to get rid of irrelevant descriptors. */
4244 close_process_descs ()
4248 for (i
= 0; i
< MAXDESC
; i
++)
4250 Lisp_Object process
;
4251 process
= chan_process
[i
];
4252 if (!NILP (process
))
4254 int in
= XPROCESS (process
)->infd
;
4255 int out
= XPROCESS (process
)->outfd
;
4258 if (out
>= 0 && in
!= out
)
4265 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4267 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4268 It is read into the process' buffers or given to their filter functions.
4269 Non-nil arg PROCESS means do not return until some output has been received
4272 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
4273 and milliseconds to wait; return after that much time whether or not
4274 there is any subprocess output. If SECONDS is a floating point number,
4275 it specifies a fractional number of seconds to wait.
4276 The MILLISEC argument is obsolete and should be avoided.
4278 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
4279 from PROCESS, suspending reading output from other processes.
4280 If JUST-THIS-ONE is an integer, don't run any timers either.
4281 Return non-nil if we received any output before the timeout expired. */)
4282 (process
, seconds
, millisec
, just_this_one
)
4283 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
4285 int secs
, usecs
= 0;
4287 if (! NILP (process
))
4288 CHECK_PROCESS (process
);
4290 just_this_one
= Qnil
;
4292 if (!NILP (millisec
))
4293 { /* Obsolete calling convention using integers rather than floats. */
4294 CHECK_NUMBER (millisec
);
4296 seconds
= make_float (XINT (millisec
) / 1000.0);
4299 CHECK_NUMBER (seconds
);
4300 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4304 if (!NILP (seconds
))
4306 if (INTEGERP (seconds
))
4307 secs
= XINT (seconds
);
4308 else if (FLOATP (seconds
))
4310 double timeout
= XFLOAT_DATA (seconds
);
4311 secs
= (int) timeout
;
4312 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
4315 wrong_type_argument (Qnumberp
, seconds
);
4317 if (secs
< 0 || (secs
== 0 && usecs
== 0))
4318 secs
= -1, usecs
= 0;
4321 secs
= NILP (process
) ? -1 : 0;
4324 (wait_reading_process_output (secs
, usecs
, 0, 0,
4326 !NILP (process
) ? XPROCESS (process
) : NULL
,
4327 NILP (just_this_one
) ? 0 :
4328 !INTEGERP (just_this_one
) ? 1 : -1)
4332 /* Accept a connection for server process SERVER on CHANNEL. */
4334 static int connect_counter
= 0;
4337 server_accept_connection (server
, channel
)
4341 Lisp_Object proc
, caller
, name
, buffer
;
4342 Lisp_Object contact
, host
, service
;
4343 struct Lisp_Process
*ps
= XPROCESS (server
);
4344 struct Lisp_Process
*p
;
4348 struct sockaddr_in in
;
4350 struct sockaddr_in6 in6
;
4352 #ifdef HAVE_LOCAL_SOCKETS
4353 struct sockaddr_un un
;
4356 int len
= sizeof saddr
;
4358 s
= accept (channel
, &saddr
.sa
, &len
);
4367 if (code
== EWOULDBLOCK
)
4371 if (!NILP (ps
->log
))
4372 call3 (ps
->log
, server
, Qnil
,
4373 concat3 (build_string ("accept failed with code"),
4374 Fnumber_to_string (make_number (code
)),
4375 build_string ("\n")));
4381 /* Setup a new process to handle the connection. */
4383 /* Generate a unique identification of the caller, and build contact
4384 information for this process. */
4387 switch (saddr
.sa
.sa_family
)
4391 Lisp_Object args
[5];
4392 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4393 args
[0] = build_string ("%d.%d.%d.%d");
4394 args
[1] = make_number (*ip
++);
4395 args
[2] = make_number (*ip
++);
4396 args
[3] = make_number (*ip
++);
4397 args
[4] = make_number (*ip
++);
4398 host
= Fformat (5, args
);
4399 service
= make_number (ntohs (saddr
.in
.sin_port
));
4401 args
[0] = build_string (" <%s:%d>");
4404 caller
= Fformat (3, args
);
4411 Lisp_Object args
[9];
4412 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4414 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4415 for (i
= 0; i
< 8; i
++)
4416 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4417 host
= Fformat (9, args
);
4418 service
= make_number (ntohs (saddr
.in
.sin_port
));
4420 args
[0] = build_string (" <[%s]:%d>");
4423 caller
= Fformat (3, args
);
4428 #ifdef HAVE_LOCAL_SOCKETS
4432 caller
= Fnumber_to_string (make_number (connect_counter
));
4433 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4437 /* Create a new buffer name for this process if it doesn't have a
4438 filter. The new buffer name is based on the buffer name or
4439 process name of the server process concatenated with the caller
4442 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4446 buffer
= ps
->buffer
;
4448 buffer
= Fbuffer_name (buffer
);
4453 buffer
= concat2 (buffer
, caller
);
4454 buffer
= Fget_buffer_create (buffer
);
4458 /* Generate a unique name for the new server process. Combine the
4459 server process name with the caller identification. */
4461 name
= concat2 (ps
->name
, caller
);
4462 proc
= make_process (name
);
4464 chan_process
[s
] = proc
;
4467 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4470 fcntl (s
, F_SETFL
, O_NDELAY
);
4474 p
= XPROCESS (proc
);
4476 /* Build new contact information for this setup. */
4477 contact
= Fcopy_sequence (ps
->childp
);
4478 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4479 contact
= Fplist_put (contact
, QChost
, host
);
4480 if (!NILP (service
))
4481 contact
= Fplist_put (contact
, QCservice
, service
);
4482 contact
= Fplist_put (contact
, QCremote
,
4483 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4484 #ifdef HAVE_GETSOCKNAME
4486 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4487 contact
= Fplist_put (contact
, QClocal
,
4488 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4491 p
->childp
= contact
;
4492 p
->plist
= Fcopy_sequence (ps
->plist
);
4496 p
->sentinel
= ps
->sentinel
;
4497 p
->filter
= ps
->filter
;
4504 /* Client processes for accepted connections are not stopped initially. */
4505 if (!EQ (p
->filter
, Qt
))
4507 FD_SET (s
, &input_wait_mask
);
4508 FD_SET (s
, &non_keyboard_wait_mask
);
4511 if (s
> max_process_desc
)
4512 max_process_desc
= s
;
4514 /* Setup coding system for new process based on server process.
4515 This seems to be the proper thing to do, as the coding system
4516 of the new process should reflect the settings at the time the
4517 server socket was opened; not the current settings. */
4519 p
->decode_coding_system
= ps
->decode_coding_system
;
4520 p
->encode_coding_system
= ps
->encode_coding_system
;
4521 setup_process_coding_systems (proc
);
4523 p
->decoding_buf
= make_uninit_string (0);
4524 p
->decoding_carryover
= 0;
4525 p
->encoding_buf
= make_uninit_string (0);
4527 p
->inherit_coding_system_flag
4528 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4530 if (!NILP (ps
->log
))
4531 call3 (ps
->log
, server
, proc
,
4532 concat3 (build_string ("accept from "),
4533 (STRINGP (host
) ? host
: build_string ("-")),
4534 build_string ("\n")));
4536 if (!NILP (p
->sentinel
))
4537 exec_sentinel (proc
,
4538 concat3 (build_string ("open from "),
4539 (STRINGP (host
) ? host
: build_string ("-")),
4540 build_string ("\n")));
4543 /* This variable is different from waiting_for_input in keyboard.c.
4544 It is used to communicate to a lisp process-filter/sentinel (via the
4545 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4546 for user-input when that process-filter was called.
4547 waiting_for_input cannot be used as that is by definition 0 when
4548 lisp code is being evalled.
4549 This is also used in record_asynch_buffer_change.
4550 For that purpose, this must be 0
4551 when not inside wait_reading_process_output. */
4552 static int waiting_for_user_input_p
;
4555 wait_reading_process_output_unwind (data
)
4558 waiting_for_user_input_p
= XINT (data
);
4562 /* This is here so breakpoints can be put on it. */
4564 wait_reading_process_output_1 ()
4568 /* Use a wrapper around select to work around a bug in gdb 5.3.
4569 Normally, the wrapper is optimzed away by inlining.
4571 If emacs is stopped inside select, the gdb backtrace doesn't
4572 show the function which called select, so it is practically
4573 impossible to step through wait_reading_process_output. */
4577 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4579 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4582 return select (n
, rfd
, wfd
, xfd
, tmo
);
4584 #define select select_wrapper
4587 /* Read and dispose of subprocess output while waiting for timeout to
4588 elapse and/or keyboard input to be available.
4591 timeout in seconds, or
4592 zero for no limit, or
4593 -1 means gobble data immediately available but don't wait for any.
4596 an additional duration to wait, measured in microseconds.
4597 If this is nonzero and time_limit is 0, then the timeout
4598 consists of MICROSECS only.
4600 READ_KBD is a lisp value:
4601 0 to ignore keyboard input, or
4602 1 to return when input is available, or
4603 -1 meaning caller will actually read the input, so don't throw to
4604 the quit handler, or
4606 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4607 output that arrives.
4609 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4610 (and gobble terminal input into the buffer if any arrives).
4612 If WAIT_PROC is specified, wait until something arrives from that
4613 process. The return value is true if we read some input from
4616 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4617 (suspending output from other processes). A negative value
4618 means don't run any timers either.
4620 If WAIT_PROC is specified, then the function returns true if we
4621 received input from that process before the timeout elapsed.
4622 Otherwise, return true if we received input from any process. */
4625 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4626 wait_for_cell
, wait_proc
, just_wait_proc
)
4627 int time_limit
, microsecs
, read_kbd
, do_display
;
4628 Lisp_Object wait_for_cell
;
4629 struct Lisp_Process
*wait_proc
;
4632 register int channel
, nfds
;
4633 SELECT_TYPE Available
;
4634 #ifdef NON_BLOCKING_CONNECT
4635 SELECT_TYPE Connecting
;
4638 int check_delay
, no_avail
;
4641 EMACS_TIME timeout
, end_time
;
4642 int wait_channel
= -1;
4643 int got_some_input
= 0;
4644 int count
= SPECPDL_INDEX ();
4646 FD_ZERO (&Available
);
4647 #ifdef NON_BLOCKING_CONNECT
4648 FD_ZERO (&Connecting
);
4651 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4652 if (wait_proc
!= NULL
)
4653 wait_channel
= wait_proc
->infd
;
4655 record_unwind_protect (wait_reading_process_output_unwind
,
4656 make_number (waiting_for_user_input_p
));
4657 waiting_for_user_input_p
= read_kbd
;
4659 /* Since we may need to wait several times,
4660 compute the absolute time to return at. */
4661 if (time_limit
|| microsecs
)
4663 EMACS_GET_TIME (end_time
);
4664 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4665 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4670 int timeout_reduced_for_timers
= 0;
4672 /* If calling from keyboard input, do not quit
4673 since we want to return C-g as an input character.
4674 Otherwise, do pending quit if requested. */
4679 process_pending_signals ();
4682 /* Exit now if the cell we're waiting for became non-nil. */
4683 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4686 /* Compute time from now till when time limit is up */
4687 /* Exit if already run out */
4688 if (time_limit
== -1)
4690 /* -1 specified for timeout means
4691 gobble output available now
4692 but don't wait at all. */
4694 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4696 else if (time_limit
|| microsecs
)
4698 EMACS_GET_TIME (timeout
);
4699 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4700 if (EMACS_TIME_NEG_P (timeout
))
4705 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4708 /* Normally we run timers here.
4709 But not if wait_for_cell; in those cases,
4710 the wait is supposed to be short,
4711 and those callers cannot handle running arbitrary Lisp code here. */
4712 if (NILP (wait_for_cell
)
4713 && just_wait_proc
>= 0)
4715 EMACS_TIME timer_delay
;
4719 int old_timers_run
= timers_run
;
4720 struct buffer
*old_buffer
= current_buffer
;
4721 Lisp_Object old_window
= selected_window
;
4723 timer_delay
= timer_check (1);
4725 /* If a timer has run, this might have changed buffers
4726 an alike. Make read_key_sequence aware of that. */
4727 if (timers_run
!= old_timers_run
4728 && (old_buffer
!= current_buffer
4729 || !EQ (old_window
, selected_window
))
4730 && waiting_for_user_input_p
== -1)
4731 record_asynch_buffer_change ();
4733 if (timers_run
!= old_timers_run
&& do_display
)
4734 /* We must retry, since a timer may have requeued itself
4735 and that could alter the time_delay. */
4736 redisplay_preserve_echo_area (9);
4740 while (!detect_input_pending ());
4742 /* If there is unread keyboard input, also return. */
4744 && requeued_events_pending_p ())
4747 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4749 EMACS_TIME difference
;
4750 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4751 if (EMACS_TIME_NEG_P (difference
))
4753 timeout
= timer_delay
;
4754 timeout_reduced_for_timers
= 1;
4757 /* If time_limit is -1, we are not going to wait at all. */
4758 else if (time_limit
!= -1)
4760 /* This is so a breakpoint can be put here. */
4761 wait_reading_process_output_1 ();
4765 /* Cause C-g and alarm signals to take immediate action,
4766 and cause input available signals to zero out timeout.
4768 It is important that we do this before checking for process
4769 activity. If we get a SIGCHLD after the explicit checks for
4770 process activity, timeout is the only way we will know. */
4772 set_waiting_for_input (&timeout
);
4774 /* If status of something has changed, and no input is
4775 available, notify the user of the change right away. After
4776 this explicit check, we'll let the SIGCHLD handler zap
4777 timeout to get our attention. */
4778 if (update_tick
!= process_tick
)
4781 #ifdef NON_BLOCKING_CONNECT
4785 Atemp
= input_wait_mask
;
4786 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4788 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4789 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4792 #ifdef NON_BLOCKING_CONNECT
4793 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4797 (SELECT_TYPE
*)0, &timeout
)
4800 /* It's okay for us to do this and then continue with
4801 the loop, since timeout has already been zeroed out. */
4802 clear_waiting_for_input ();
4803 status_notify (NULL
);
4804 if (do_display
) redisplay_preserve_echo_area (13);
4808 /* Don't wait for output from a non-running process. Just
4809 read whatever data has already been received. */
4810 if (wait_proc
&& wait_proc
->raw_status_new
)
4811 update_status (wait_proc
);
4813 && ! EQ (wait_proc
->status
, Qrun
)
4814 && ! EQ (wait_proc
->status
, Qconnect
))
4816 int nread
, total_nread
= 0;
4818 clear_waiting_for_input ();
4819 XSETPROCESS (proc
, wait_proc
);
4821 /* Read data from the process, until we exhaust it. */
4822 while (wait_proc
->infd
>= 0)
4824 nread
= read_process_output (proc
, wait_proc
->infd
);
4831 total_nread
+= nread
;
4835 else if (nread
== -1 && EIO
== errno
)
4839 else if (nread
== -1 && EAGAIN
== errno
)
4843 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4847 if (total_nread
> 0 && do_display
)
4848 redisplay_preserve_echo_area (10);
4853 /* Wait till there is something to do */
4855 if (wait_proc
&& just_wait_proc
)
4857 if (wait_proc
->infd
< 0) /* Terminated */
4859 FD_SET (wait_proc
->infd
, &Available
);
4861 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4863 else if (!NILP (wait_for_cell
))
4865 Available
= non_process_wait_mask
;
4867 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4872 Available
= non_keyboard_wait_mask
;
4874 Available
= input_wait_mask
;
4875 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4876 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4879 /* If frame size has changed or the window is newly mapped,
4880 redisplay now, before we start to wait. There is a race
4881 condition here; if a SIGIO arrives between now and the select
4882 and indicates that a frame is trashed, the select may block
4883 displaying a trashed screen. */
4884 if (frame_garbaged
&& do_display
)
4886 clear_waiting_for_input ();
4887 redisplay_preserve_echo_area (11);
4889 set_waiting_for_input (&timeout
);
4893 if (read_kbd
&& detect_input_pending ())
4900 #ifdef NON_BLOCKING_CONNECT
4902 Connecting
= connect_wait_mask
;
4905 #ifdef ADAPTIVE_READ_BUFFERING
4906 /* Set the timeout for adaptive read buffering if any
4907 process has non-zero read_output_skip and non-zero
4908 read_output_delay, and we are not reading output for a
4909 specific wait_channel. It is not executed if
4910 Vprocess_adaptive_read_buffering is nil. */
4911 if (process_output_skip
&& check_delay
> 0)
4913 int usecs
= EMACS_USECS (timeout
);
4914 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4915 usecs
= READ_OUTPUT_DELAY_MAX
;
4916 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4918 proc
= chan_process
[channel
];
4921 /* Find minimum non-zero read_output_delay among the
4922 processes with non-zero read_output_skip. */
4923 if (XPROCESS (proc
)->read_output_delay
> 0)
4926 if (!XPROCESS (proc
)->read_output_skip
)
4928 FD_CLR (channel
, &Available
);
4929 XPROCESS (proc
)->read_output_skip
= 0;
4930 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4931 usecs
= XPROCESS (proc
)->read_output_delay
;
4934 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4935 process_output_skip
= 0;
4938 #if defined (USE_GTK) || defined (HAVE_GCONF)
4940 #elif defined (HAVE_NS)
4945 (max (max (max_process_desc
, max_keyboard_desc
),
4948 #ifdef NON_BLOCKING_CONNECT
4949 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4953 (SELECT_TYPE
*)0, &timeout
);
4958 /* Make C-g and alarm signals set flags again */
4959 clear_waiting_for_input ();
4961 /* If we woke up due to SIGWINCH, actually change size now. */
4962 do_pending_window_change (0);
4964 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4965 /* We wanted the full specified time, so return now. */
4969 if (xerrno
== EINTR
)
4971 else if (xerrno
== EBADF
)
4974 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4975 the child's closure of the pts gives the parent a SIGHUP, and
4976 the ptc file descriptor is automatically closed,
4977 yielding EBADF here or at select() call above.
4978 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4979 in m/ibmrt-aix.h), and here we just ignore the select error.
4980 Cleanup occurs c/o status_notify after SIGCLD. */
4981 no_avail
= 1; /* Cannot depend on values returned */
4987 error ("select error: %s", emacs_strerror (xerrno
));
4992 FD_ZERO (&Available
);
4993 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4996 #if 0 /* When polling is used, interrupt_input is 0,
4997 so get_input_pending should read the input.
4998 So this should not be needed. */
4999 /* If we are using polling for input,
5000 and we see input available, make it get read now.
5001 Otherwise it might not actually get read for a second.
5002 And on hpux, since we turn off polling in wait_reading_process_output,
5003 it might never get read at all if we don't spend much time
5004 outside of wait_reading_process_output. */
5005 if (read_kbd
&& interrupt_input
5006 && keyboard_bit_set (&Available
)
5007 && input_polling_used ())
5008 kill (getpid (), SIGALRM
);
5011 /* Check for keyboard input */
5012 /* If there is any, return immediately
5013 to give it higher priority than subprocesses */
5017 int old_timers_run
= timers_run
;
5018 struct buffer
*old_buffer
= current_buffer
;
5019 Lisp_Object old_window
= selected_window
;
5022 if (detect_input_pending_run_timers (do_display
))
5024 swallow_events (do_display
);
5025 if (detect_input_pending_run_timers (do_display
))
5029 /* If a timer has run, this might have changed buffers
5030 an alike. Make read_key_sequence aware of that. */
5031 if (timers_run
!= old_timers_run
5032 && waiting_for_user_input_p
== -1
5033 && (old_buffer
!= current_buffer
5034 || !EQ (old_window
, selected_window
)))
5035 record_asynch_buffer_change ();
5041 /* If there is unread keyboard input, also return. */
5043 && requeued_events_pending_p ())
5046 /* If we are not checking for keyboard input now,
5047 do process events (but don't run any timers).
5048 This is so that X events will be processed.
5049 Otherwise they may have to wait until polling takes place.
5050 That would causes delays in pasting selections, for example.
5052 (We used to do this only if wait_for_cell.) */
5053 if (read_kbd
== 0 && detect_input_pending ())
5055 swallow_events (do_display
);
5056 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5057 if (detect_input_pending ())
5062 /* Exit now if the cell we're waiting for became non-nil. */
5063 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5067 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5068 go read it. This can happen with X on BSD after logging out.
5069 In that case, there really is no input and no SIGIO,
5070 but select says there is input. */
5072 if (read_kbd
&& interrupt_input
5073 && keyboard_bit_set (&Available
) && ! noninteractive
)
5074 kill (getpid (), SIGIO
);
5078 got_some_input
|= nfds
> 0;
5080 /* If checking input just got us a size-change event from X,
5081 obey it now if we should. */
5082 if (read_kbd
|| ! NILP (wait_for_cell
))
5083 do_pending_window_change (0);
5085 /* Check for data from a process. */
5086 if (no_avail
|| nfds
== 0)
5089 /* Really FIRST_PROC_DESC should be 0 on Unix,
5090 but this is safer in the short run. */
5091 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5093 if (FD_ISSET (channel
, &Available
)
5094 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
5098 /* If waiting for this channel, arrange to return as
5099 soon as no more input to be processed. No more
5101 if (wait_channel
== channel
)
5107 proc
= chan_process
[channel
];
5111 /* If this is a server stream socket, accept connection. */
5112 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5114 server_accept_connection (proc
, channel
);
5118 /* Read data from the process, starting with our
5119 buffered-ahead character if we have one. */
5121 nread
= read_process_output (proc
, channel
);
5124 /* Since read_process_output can run a filter,
5125 which can call accept-process-output,
5126 don't try to read from any other processes
5127 before doing the select again. */
5128 FD_ZERO (&Available
);
5131 redisplay_preserve_echo_area (12);
5134 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5137 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
5138 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
5140 else if (nread
== -1 && errno
== EAGAIN
)
5144 else if (nread
== -1 && errno
== EAGAIN
)
5146 /* Note that we cannot distinguish between no input
5147 available now and a closed pipe.
5148 With luck, a closed pipe will be accompanied by
5149 subprocess termination and SIGCHLD. */
5150 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5152 #endif /* O_NDELAY */
5153 #endif /* O_NONBLOCK */
5155 /* On some OSs with ptys, when the process on one end of
5156 a pty exits, the other end gets an error reading with
5157 errno = EIO instead of getting an EOF (0 bytes read).
5158 Therefore, if we get an error reading and errno =
5159 EIO, just continue, because the child process has
5160 exited and should clean itself up soon (e.g. when we
5163 However, it has been known to happen that the SIGCHLD
5164 got lost. So raise the signal again just in case.
5166 else if (nread
== -1 && errno
== EIO
)
5168 /* Clear the descriptor now, so we only raise the
5169 signal once. Don't do this if `process' is only
5171 if (XPROCESS (proc
)->pid
!= -2)
5173 FD_CLR (channel
, &input_wait_mask
);
5174 FD_CLR (channel
, &non_keyboard_wait_mask
);
5176 kill (getpid (), SIGCHLD
);
5179 #endif /* HAVE_PTYS */
5180 /* If we can detect process termination, don't consider the process
5181 gone just because its pipe is closed. */
5183 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5188 /* Preserve status of processes already terminated. */
5189 XPROCESS (proc
)->tick
= ++process_tick
;
5190 deactivate_process (proc
);
5191 if (XPROCESS (proc
)->raw_status_new
)
5192 update_status (XPROCESS (proc
));
5193 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5194 XPROCESS (proc
)->status
5195 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5198 #ifdef NON_BLOCKING_CONNECT
5199 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
5200 && FD_ISSET (channel
, &connect_wait_mask
))
5202 struct Lisp_Process
*p
;
5204 FD_CLR (channel
, &connect_wait_mask
);
5205 if (--num_pending_connects
< 0)
5208 proc
= chan_process
[channel
];
5212 p
= XPROCESS (proc
);
5215 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5216 So only use it on systems where it is known to work. */
5218 int xlen
= sizeof(xerrno
);
5219 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5224 struct sockaddr pname
;
5225 int pnamelen
= sizeof(pname
);
5227 /* If connection failed, getpeername will fail. */
5229 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
5231 /* Obtain connect failure code through error slippage. */
5234 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
5241 p
->tick
= ++process_tick
;
5242 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
5243 deactivate_process (proc
);
5248 /* Execute the sentinel here. If we had relied on
5249 status_notify to do it later, it will read input
5250 from the process before calling the sentinel. */
5251 exec_sentinel (proc
, build_string ("open\n"));
5252 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
5254 FD_SET (p
->infd
, &input_wait_mask
);
5255 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5259 #endif /* NON_BLOCKING_CONNECT */
5260 } /* end for each file descriptor */
5261 } /* end while exit conditions not met */
5263 unbind_to (count
, Qnil
);
5265 /* If calling from keyboard input, do not quit
5266 since we want to return C-g as an input character.
5267 Otherwise, do pending quit if requested. */
5270 /* Prevent input_pending from remaining set if we quit. */
5271 clear_input_pending ();
5275 return got_some_input
;
5278 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5281 read_process_output_call (fun_and_args
)
5282 Lisp_Object fun_and_args
;
5284 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5288 read_process_output_error_handler (error
)
5291 cmd_error_internal (error
, "error in process filter: ");
5293 update_echo_area ();
5294 Fsleep_for (make_number (2), Qnil
);
5298 /* Read pending output from the process channel,
5299 starting with our buffered-ahead character if we have one.
5300 Yield number of decoded characters read.
5302 This function reads at most 4096 characters.
5303 If you want to read all available subprocess output,
5304 you must call it repeatedly until it returns zero.
5306 The characters read are decoded according to PROC's coding-system
5310 read_process_output (proc
, channel
)
5312 register int channel
;
5314 register int nbytes
;
5316 register Lisp_Object outstream
;
5317 register struct Lisp_Process
*p
= XPROCESS (proc
);
5318 register int opoint
;
5319 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5320 int carryover
= p
->decoding_carryover
;
5323 chars
= (char *) alloca (carryover
+ readmax
);
5325 /* See the comment above. */
5326 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5328 #ifdef DATAGRAM_SOCKETS
5329 /* We have a working select, so proc_buffered_char is always -1. */
5330 if (DATAGRAM_CHAN_P (channel
))
5332 int len
= datagram_address
[channel
].len
;
5333 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5334 0, datagram_address
[channel
].sa
, &len
);
5338 if (proc_buffered_char
[channel
] < 0)
5340 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5341 #ifdef ADAPTIVE_READ_BUFFERING
5342 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5344 int delay
= p
->read_output_delay
;
5347 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5350 process_output_delay_count
++;
5351 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5354 else if (delay
> 0 && (nbytes
== readmax
))
5356 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5358 process_output_delay_count
--;
5360 p
->read_output_delay
= delay
;
5363 p
->read_output_skip
= 1;
5364 process_output_skip
= 1;
5371 chars
[carryover
] = proc_buffered_char
[channel
];
5372 proc_buffered_char
[channel
] = -1;
5373 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5377 nbytes
= nbytes
+ 1;
5380 p
->decoding_carryover
= 0;
5382 /* At this point, NBYTES holds number of bytes just received
5383 (including the one in proc_buffered_char[channel]). */
5386 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5388 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5391 /* Now set NBYTES how many bytes we must decode. */
5392 nbytes
+= carryover
;
5394 /* Read and dispose of the process output. */
5395 outstream
= p
->filter
;
5396 if (!NILP (outstream
))
5398 /* We inhibit quit here instead of just catching it so that
5399 hitting ^G when a filter happens to be running won't screw
5401 int count
= SPECPDL_INDEX ();
5402 Lisp_Object odeactivate
;
5403 Lisp_Object obuffer
, okeymap
;
5405 int outer_running_asynch_code
= running_asynch_code
;
5406 int waiting
= waiting_for_user_input_p
;
5408 /* No need to gcpro these, because all we do with them later
5409 is test them for EQness, and none of them should be a string. */
5410 odeactivate
= Vdeactivate_mark
;
5411 XSETBUFFER (obuffer
, current_buffer
);
5412 okeymap
= current_buffer
->keymap
;
5414 specbind (Qinhibit_quit
, Qt
);
5415 specbind (Qlast_nonmenu_event
, Qt
);
5417 /* In case we get recursively called,
5418 and we already saved the match data nonrecursively,
5419 save the same match data in safely recursive fashion. */
5420 if (outer_running_asynch_code
)
5423 /* Don't clobber the CURRENT match data, either! */
5424 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5425 restore_search_regs ();
5426 record_unwind_save_match_data ();
5427 Fset_match_data (tem
, Qt
);
5430 /* For speed, if a search happens within this code,
5431 save the match data in a special nonrecursive fashion. */
5432 running_asynch_code
= 1;
5434 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5435 text
= coding
->dst_object
;
5436 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5437 /* A new coding system might be found. */
5438 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5440 p
->decode_coding_system
= Vlast_coding_system_used
;
5442 /* Don't call setup_coding_system for
5443 proc_decode_coding_system[channel] here. It is done in
5444 detect_coding called via decode_coding above. */
5446 /* If a coding system for encoding is not yet decided, we set
5447 it as the same as coding-system for decoding.
5449 But, before doing that we must check if
5450 proc_encode_coding_system[p->outfd] surely points to a
5451 valid memory because p->outfd will be changed once EOF is
5452 sent to the process. */
5453 if (NILP (p
->encode_coding_system
)
5454 && proc_encode_coding_system
[p
->outfd
])
5456 p
->encode_coding_system
5457 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5458 setup_coding_system (p
->encode_coding_system
,
5459 proc_encode_coding_system
[p
->outfd
]);
5463 if (coding
->carryover_bytes
> 0)
5465 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5466 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5467 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5468 coding
->carryover_bytes
);
5469 p
->decoding_carryover
= coding
->carryover_bytes
;
5471 if (SBYTES (text
) > 0)
5472 internal_condition_case_1 (read_process_output_call
,
5474 Fcons (proc
, Fcons (text
, Qnil
))),
5475 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5476 read_process_output_error_handler
);
5478 /* If we saved the match data nonrecursively, restore it now. */
5479 restore_search_regs ();
5480 running_asynch_code
= outer_running_asynch_code
;
5482 /* Handling the process output should not deactivate the mark. */
5483 Vdeactivate_mark
= odeactivate
;
5485 /* Restore waiting_for_user_input_p as it was
5486 when we were called, in case the filter clobbered it. */
5487 waiting_for_user_input_p
= waiting
;
5489 #if 0 /* Call record_asynch_buffer_change unconditionally,
5490 because we might have changed minor modes or other things
5491 that affect key bindings. */
5492 if (! EQ (Fcurrent_buffer (), obuffer
)
5493 || ! EQ (current_buffer
->keymap
, okeymap
))
5495 /* But do it only if the caller is actually going to read events.
5496 Otherwise there's no need to make him wake up, and it could
5497 cause trouble (for example it would make sit_for return). */
5498 if (waiting_for_user_input_p
== -1)
5499 record_asynch_buffer_change ();
5501 unbind_to (count
, Qnil
);
5505 /* If no filter, write into buffer if it isn't dead. */
5506 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5508 Lisp_Object old_read_only
;
5509 int old_begv
, old_zv
;
5510 int old_begv_byte
, old_zv_byte
;
5511 Lisp_Object odeactivate
;
5512 int before
, before_byte
;
5516 int count
= SPECPDL_INDEX ();
5518 odeactivate
= Vdeactivate_mark
;
5520 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
5521 Fset_buffer (p
->buffer
);
5523 opoint_byte
= PT_BYTE
;
5524 old_read_only
= current_buffer
->read_only
;
5527 old_begv_byte
= BEGV_BYTE
;
5528 old_zv_byte
= ZV_BYTE
;
5530 current_buffer
->read_only
= Qnil
;
5532 /* Insert new output into buffer
5533 at the current end-of-output marker,
5534 thus preserving logical ordering of input and output. */
5535 if (XMARKER (p
->mark
)->buffer
)
5536 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5537 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5540 SET_PT_BOTH (ZV
, ZV_BYTE
);
5542 before_byte
= PT_BYTE
;
5544 /* If the output marker is outside of the visible region, save
5545 the restriction and widen. */
5546 if (! (BEGV
<= PT
&& PT
<= ZV
))
5549 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5550 text
= coding
->dst_object
;
5551 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5552 /* A new coding system might be found. See the comment in the
5553 similar code in the previous `if' block. */
5554 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5556 p
->decode_coding_system
= Vlast_coding_system_used
;
5557 if (NILP (p
->encode_coding_system
)
5558 && proc_encode_coding_system
[p
->outfd
])
5560 p
->encode_coding_system
5561 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5562 setup_coding_system (p
->encode_coding_system
,
5563 proc_encode_coding_system
[p
->outfd
]);
5566 if (coding
->carryover_bytes
> 0)
5568 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5569 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5570 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5571 coding
->carryover_bytes
);
5572 p
->decoding_carryover
= coding
->carryover_bytes
;
5574 /* Adjust the multibyteness of TEXT to that of the buffer. */
5575 if (NILP (current_buffer
->enable_multibyte_characters
)
5576 != ! STRING_MULTIBYTE (text
))
5577 text
= (STRING_MULTIBYTE (text
)
5578 ? Fstring_as_unibyte (text
)
5579 : Fstring_to_multibyte (text
));
5580 /* Insert before markers in case we are inserting where
5581 the buffer's mark is, and the user's next command is Meta-y. */
5582 insert_from_string_before_markers (text
, 0, 0,
5583 SCHARS (text
), SBYTES (text
), 0);
5585 /* Make sure the process marker's position is valid when the
5586 process buffer is changed in the signal_after_change above.
5587 W3 is known to do that. */
5588 if (BUFFERP (p
->buffer
)
5589 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5590 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5592 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5594 update_mode_lines
++;
5596 /* Make sure opoint and the old restrictions
5597 float ahead of any new text just as point would. */
5598 if (opoint
>= before
)
5600 opoint
+= PT
- before
;
5601 opoint_byte
+= PT_BYTE
- before_byte
;
5603 if (old_begv
> before
)
5605 old_begv
+= PT
- before
;
5606 old_begv_byte
+= PT_BYTE
- before_byte
;
5608 if (old_zv
>= before
)
5610 old_zv
+= PT
- before
;
5611 old_zv_byte
+= PT_BYTE
- before_byte
;
5614 /* If the restriction isn't what it should be, set it. */
5615 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5616 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5618 /* Handling the process output should not deactivate the mark. */
5619 Vdeactivate_mark
= odeactivate
;
5621 current_buffer
->read_only
= old_read_only
;
5622 SET_PT_BOTH (opoint
, opoint_byte
);
5623 unbind_to (count
, Qnil
);
5628 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5630 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5631 This is intended for use by asynchronous process output filters and sentinels. */)
5634 return (waiting_for_user_input_p
? Qt
: Qnil
);
5637 /* Sending data to subprocess */
5639 jmp_buf send_process_frame
;
5640 Lisp_Object process_sent_to
;
5643 send_process_trap ()
5645 SIGNAL_THREAD_CHECK (SIGPIPE
);
5646 sigunblock (sigmask (SIGPIPE
));
5647 longjmp (send_process_frame
, 1);
5650 /* Send some data to process PROC.
5651 BUF is the beginning of the data; LEN is the number of characters.
5652 OBJECT is the Lisp object that the data comes from. If OBJECT is
5653 nil or t, it means that the data comes from C string.
5655 If OBJECT is not nil, the data is encoded by PROC's coding-system
5656 for encoding before it is sent.
5658 This function can evaluate Lisp code and can garbage collect. */
5661 send_process (proc
, buf
, len
, object
)
5662 volatile Lisp_Object proc
;
5663 unsigned char *volatile buf
;
5665 volatile Lisp_Object object
;
5667 /* Use volatile to protect variables from being clobbered by longjmp. */
5668 struct Lisp_Process
*p
= XPROCESS (proc
);
5670 struct coding_system
*coding
;
5671 struct gcpro gcpro1
;
5672 SIGTYPE (*volatile old_sigpipe
) ();
5676 if (p
->raw_status_new
)
5678 if (! EQ (p
->status
, Qrun
))
5679 error ("Process %s not running", SDATA (p
->name
));
5681 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5683 coding
= proc_encode_coding_system
[p
->outfd
];
5684 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5686 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5687 || (BUFFERP (object
)
5688 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5691 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5692 /* The coding system for encoding was changed to raw-text
5693 because we sent a unibyte text previously. Now we are
5694 sending a multibyte text, thus we must encode it by the
5695 original coding system specified for the current process. */
5696 setup_coding_system (p
->encode_coding_system
, coding
);
5697 coding
->src_multibyte
= 1;
5701 /* For sending a unibyte text, character code conversion should
5702 not take place but EOL conversion should. So, setup raw-text
5703 or one of the subsidiary if we have not yet done it. */
5704 if (CODING_REQUIRE_ENCODING (coding
))
5706 if (CODING_REQUIRE_FLUSHING (coding
))
5708 /* But, before changing the coding, we must flush out data. */
5709 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5710 send_process (proc
, "", 0, Qt
);
5711 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5713 setup_coding_system (raw_text_coding_system
5714 (Vlast_coding_system_used
),
5716 coding
->src_multibyte
= 0;
5719 coding
->dst_multibyte
= 0;
5721 if (CODING_REQUIRE_ENCODING (coding
))
5723 coding
->dst_object
= Qt
;
5724 if (BUFFERP (object
))
5726 int from_byte
, from
, to
;
5727 int save_pt
, save_pt_byte
;
5728 struct buffer
*cur
= current_buffer
;
5730 set_buffer_internal (XBUFFER (object
));
5731 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5733 from_byte
= PTR_BYTE_POS (buf
);
5734 from
= BYTE_TO_CHAR (from_byte
);
5735 to
= BYTE_TO_CHAR (from_byte
+ len
);
5736 TEMP_SET_PT_BOTH (from
, from_byte
);
5737 encode_coding_object (coding
, object
, from
, from_byte
,
5738 to
, from_byte
+ len
, Qt
);
5739 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5740 set_buffer_internal (cur
);
5742 else if (STRINGP (object
))
5744 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5745 SBYTES (object
), Qt
);
5749 coding
->dst_object
= make_unibyte_string (buf
, len
);
5750 coding
->produced
= len
;
5753 len
= coding
->produced
;
5754 object
= coding
->dst_object
;
5755 buf
= SDATA (object
);
5758 if (pty_max_bytes
== 0)
5760 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5761 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5762 if (pty_max_bytes
< 0)
5763 pty_max_bytes
= 250;
5765 pty_max_bytes
= 250;
5767 /* Deduct one, to leave space for the eof. */
5771 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5772 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5773 when returning with longjmp despite being declared volatile. */
5774 if (!setjmp (send_process_frame
))
5776 process_sent_to
= proc
;
5781 /* Decide how much data we can send in one batch.
5782 Long lines need to be split into multiple batches. */
5785 /* Starting this at zero is always correct when not the first
5786 iteration because the previous iteration ended by sending C-d.
5787 It may not be correct for the first iteration
5788 if a partial line was sent in a separate send_process call.
5789 If that proves worth handling, we need to save linepos
5790 in the process object. */
5792 unsigned char *ptr
= (unsigned char *) buf
;
5793 unsigned char *end
= (unsigned char *) buf
+ len
;
5795 /* Scan through this text for a line that is too long. */
5796 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5804 /* If we found one, break the line there
5805 and put in a C-d to force the buffer through. */
5809 /* Send this batch, using one or more write calls. */
5812 int outfd
= p
->outfd
;
5813 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5814 #ifdef DATAGRAM_SOCKETS
5815 if (DATAGRAM_CHAN_P (outfd
))
5817 rv
= sendto (outfd
, (char *) buf
, this,
5818 0, datagram_address
[outfd
].sa
,
5819 datagram_address
[outfd
].len
);
5820 if (rv
< 0 && errno
== EMSGSIZE
)
5822 signal (SIGPIPE
, old_sigpipe
);
5823 report_file_error ("sending datagram",
5824 Fcons (proc
, Qnil
));
5830 rv
= emacs_write (outfd
, (char *) buf
, this);
5831 #ifdef ADAPTIVE_READ_BUFFERING
5832 if (p
->read_output_delay
> 0
5833 && p
->adaptive_read_buffering
== 1)
5835 p
->read_output_delay
= 0;
5836 process_output_delay_count
--;
5837 p
->read_output_skip
= 0;
5841 signal (SIGPIPE
, old_sigpipe
);
5847 || errno
== EWOULDBLOCK
5853 /* Buffer is full. Wait, accepting input;
5854 that may allow the program
5855 to finish doing output and read more. */
5859 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5860 /* A gross hack to work around a bug in FreeBSD.
5861 In the following sequence, read(2) returns
5865 write(2) 954 bytes, get EAGAIN
5866 read(2) 1024 bytes in process_read_output
5867 read(2) 11 bytes in process_read_output
5869 That is, read(2) returns more bytes than have
5870 ever been written successfully. The 1033 bytes
5871 read are the 1022 bytes written successfully
5872 after processing (for example with CRs added if
5873 the terminal is set up that way which it is
5874 here). The same bytes will be seen again in a
5875 later read(2), without the CRs. */
5877 if (errno
== EAGAIN
)
5880 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5882 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5884 /* Running filters might relocate buffers or strings.
5885 Arrange to relocate BUF. */
5886 if (BUFFERP (object
))
5887 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5888 else if (STRINGP (object
))
5889 offset
= buf
- SDATA (object
);
5891 #ifdef EMACS_HAS_USECS
5892 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5894 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5897 if (BUFFERP (object
))
5898 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5899 else if (STRINGP (object
))
5900 buf
= offset
+ SDATA (object
);
5905 /* This is a real error. */
5906 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5913 /* If we sent just part of the string, put in an EOF (C-d)
5914 to force it through, before we send the rest. */
5916 Fprocess_send_eof (proc
);
5921 signal (SIGPIPE
, old_sigpipe
);
5922 proc
= process_sent_to
;
5923 p
= XPROCESS (proc
);
5924 p
->raw_status_new
= 0;
5925 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5926 p
->tick
= ++process_tick
;
5927 deactivate_process (proc
);
5928 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5934 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5936 doc
: /* Send current contents of region as input to PROCESS.
5937 PROCESS may be a process, a buffer, the name of a process or buffer, or
5938 nil, indicating the current buffer's process.
5939 Called from program, takes three arguments, PROCESS, START and END.
5940 If the region is more than 500 characters long,
5941 it is sent in several bunches. This may happen even for shorter regions.
5942 Output from processes can arrive in between bunches. */)
5943 (process
, start
, end
)
5944 Lisp_Object process
, start
, end
;
5949 proc
= get_process (process
);
5950 validate_region (&start
, &end
);
5952 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5953 move_gap (XINT (start
));
5955 start1
= CHAR_TO_BYTE (XINT (start
));
5956 end1
= CHAR_TO_BYTE (XINT (end
));
5957 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5958 Fcurrent_buffer ());
5963 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5965 doc
: /* Send PROCESS the contents of STRING as input.
5966 PROCESS may be a process, a buffer, the name of a process or buffer, or
5967 nil, indicating the current buffer's process.
5968 If STRING is more than 500 characters long,
5969 it is sent in several bunches. This may happen even for shorter strings.
5970 Output from processes can arrive in between bunches. */)
5972 Lisp_Object process
, string
;
5975 CHECK_STRING (string
);
5976 proc
= get_process (process
);
5977 send_process (proc
, SDATA (string
),
5978 SBYTES (string
), string
);
5982 /* Return the foreground process group for the tty/pty that
5983 the process P uses. */
5985 emacs_get_tty_pgrp (p
)
5986 struct Lisp_Process
*p
;
5991 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5994 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5995 master side. Try the slave side. */
5996 fd
= emacs_open (SDATA (p
->tty_name
), O_RDONLY
, 0);
6000 ioctl (fd
, TIOCGPGRP
, &gid
);
6004 #endif /* defined (TIOCGPGRP ) */
6009 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
6010 Sprocess_running_child_p
, 0, 1, 0,
6011 doc
: /* Return t if PROCESS has given the terminal to a child.
6012 If the operating system does not make it possible to find out,
6013 return t unconditionally. */)
6015 Lisp_Object process
;
6017 /* Initialize in case ioctl doesn't exist or gives an error,
6018 in a way that will cause returning t. */
6021 struct Lisp_Process
*p
;
6023 proc
= get_process (process
);
6024 p
= XPROCESS (proc
);
6026 if (!EQ (p
->type
, Qreal
))
6027 error ("Process %s is not a subprocess",
6030 error ("Process %s is not active",
6033 gid
= emacs_get_tty_pgrp (p
);
6040 /* send a signal number SIGNO to PROCESS.
6041 If CURRENT_GROUP is t, that means send to the process group
6042 that currently owns the terminal being used to communicate with PROCESS.
6043 This is used for various commands in shell mode.
6044 If CURRENT_GROUP is lambda, that means send to the process group
6045 that currently owns the terminal, but only if it is NOT the shell itself.
6047 If NOMSG is zero, insert signal-announcements into process's buffers
6050 If we can, we try to signal PROCESS by sending control characters
6051 down the pty. This allows us to signal inferiors who have changed
6052 their uid, for which killpg would return an EPERM error. */
6055 process_send_signal (process
, signo
, current_group
, nomsg
)
6056 Lisp_Object process
;
6058 Lisp_Object current_group
;
6062 register struct Lisp_Process
*p
;
6066 proc
= get_process (process
);
6067 p
= XPROCESS (proc
);
6069 if (!EQ (p
->type
, Qreal
))
6070 error ("Process %s is not a subprocess",
6073 error ("Process %s is not active",
6077 current_group
= Qnil
;
6079 /* If we are using pgrps, get a pgrp number and make it negative. */
6080 if (NILP (current_group
))
6081 /* Send the signal to the shell's process group. */
6085 #ifdef SIGNALS_VIA_CHARACTERS
6086 /* If possible, send signals to the entire pgrp
6087 by sending an input character to it. */
6089 /* TERMIOS is the latest and bestest, and seems most likely to
6090 work. If the system has it, use it. */
6093 cc_t
*sig_char
= NULL
;
6095 tcgetattr (p
->infd
, &t
);
6100 sig_char
= &t
.c_cc
[VINTR
];
6104 sig_char
= &t
.c_cc
[VQUIT
];
6108 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
6109 sig_char
= &t
.c_cc
[VSWTCH
];
6111 sig_char
= &t
.c_cc
[VSUSP
];
6116 if (sig_char
&& *sig_char
!= CDISABLE
)
6118 send_process (proc
, sig_char
, 1, Qnil
);
6121 /* If we can't send the signal with a character,
6122 fall through and send it another way. */
6123 #else /* ! HAVE_TERMIOS */
6125 /* On Berkeley descendants, the following IOCTL's retrieve the
6126 current control characters. */
6127 #if defined (TIOCGLTC) && defined (TIOCGETC)
6135 ioctl (p
->infd
, TIOCGETC
, &c
);
6136 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
6139 ioctl (p
->infd
, TIOCGETC
, &c
);
6140 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
6144 ioctl (p
->infd
, TIOCGLTC
, &lc
);
6145 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
6147 #endif /* ! defined (SIGTSTP) */
6150 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6152 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
6159 ioctl (p
->infd
, TCGETA
, &t
);
6160 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
6163 ioctl (p
->infd
, TCGETA
, &t
);
6164 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6168 ioctl (p
->infd
, TCGETA
, &t
);
6169 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6171 #endif /* ! defined (SIGTSTP) */
6173 #else /* ! defined (TCGETA) */
6174 Your configuration files are messed up
.
6175 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6176 you'd better be using one of the alternatives above! */
6177 #endif /* ! defined (TCGETA) */
6178 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6179 /* In this case, the code above should alway return. */
6181 #endif /* ! defined HAVE_TERMIOS */
6183 /* The code above may fall through if it can't
6184 handle the signal. */
6185 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6188 /* Get the current pgrp using the tty itself, if we have that.
6189 Otherwise, use the pty to get the pgrp.
6190 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6191 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6192 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6193 His patch indicates that if TIOCGPGRP returns an error, then
6194 we should just assume that p->pid is also the process group id. */
6196 gid
= emacs_get_tty_pgrp (p
);
6199 /* If we can't get the information, assume
6200 the shell owns the tty. */
6203 /* It is not clear whether anything really can set GID to -1.
6204 Perhaps on some system one of those ioctls can or could do so.
6205 Or perhaps this is vestigial. */
6208 #else /* ! defined (TIOCGPGRP ) */
6209 /* Can't select pgrps on this system, so we know that
6210 the child itself heads the pgrp. */
6212 #endif /* ! defined (TIOCGPGRP ) */
6214 /* If current_group is lambda, and the shell owns the terminal,
6215 don't send any signal. */
6216 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6224 p
->raw_status_new
= 0;
6226 p
->tick
= ++process_tick
;
6229 status_notify (NULL
);
6230 redisplay_preserve_echo_area (13);
6233 #endif /* ! defined (SIGCONT) */
6237 flush_pending_output (p
->infd
);
6241 /* If we don't have process groups, send the signal to the immediate
6242 subprocess. That isn't really right, but it's better than any
6243 obvious alternative. */
6246 kill (p
->pid
, signo
);
6250 /* gid may be a pid, or minus a pgrp's number */
6252 if (!NILP (current_group
))
6254 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6255 EMACS_KILLPG (gid
, signo
);
6262 #else /* ! defined (TIOCSIGSEND) */
6263 EMACS_KILLPG (gid
, signo
);
6264 #endif /* ! defined (TIOCSIGSEND) */
6267 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6268 doc
: /* Interrupt process PROCESS.
6269 PROCESS may be a process, a buffer, or the name of a process or buffer.
6270 No arg or nil means current buffer's process.
6271 Second arg CURRENT-GROUP non-nil means send signal to
6272 the current process-group of the process's controlling terminal
6273 rather than to the process's own process group.
6274 If the process is a shell, this means interrupt current subjob
6275 rather than the shell.
6277 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6278 don't send the signal. */)
6279 (process
, current_group
)
6280 Lisp_Object process
, current_group
;
6282 process_send_signal (process
, SIGINT
, current_group
, 0);
6286 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6287 doc
: /* Kill process PROCESS. May be process or name of one.
6288 See function `interrupt-process' for more details on usage. */)
6289 (process
, current_group
)
6290 Lisp_Object process
, current_group
;
6292 process_send_signal (process
, SIGKILL
, current_group
, 0);
6296 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6297 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6298 See function `interrupt-process' for more details on usage. */)
6299 (process
, current_group
)
6300 Lisp_Object process
, current_group
;
6302 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6306 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6307 doc
: /* Stop process PROCESS. May be process or name of one.
6308 See function `interrupt-process' for more details on usage.
6309 If PROCESS is a network or serial process, inhibit handling of incoming
6311 (process
, current_group
)
6312 Lisp_Object process
, current_group
;
6315 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6317 struct Lisp_Process
*p
;
6319 p
= XPROCESS (process
);
6320 if (NILP (p
->command
)
6323 FD_CLR (p
->infd
, &input_wait_mask
);
6324 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6331 error ("No SIGTSTP support");
6333 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6338 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6339 doc
: /* Continue process PROCESS. May be process or name of one.
6340 See function `interrupt-process' for more details on usage.
6341 If PROCESS is a network or serial process, resume handling of incoming
6343 (process
, current_group
)
6344 Lisp_Object process
, current_group
;
6347 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6349 struct Lisp_Process
*p
;
6351 p
= XPROCESS (process
);
6352 if (EQ (p
->command
, Qt
)
6354 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6356 FD_SET (p
->infd
, &input_wait_mask
);
6357 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6359 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6360 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6363 tcflush (p
->infd
, TCIFLUSH
);
6371 process_send_signal (process
, SIGCONT
, current_group
, 0);
6373 error ("No SIGCONT support");
6378 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6379 2, 2, "sProcess (name or number): \nnSignal code: ",
6380 doc
: /* Send PROCESS the signal with code SIGCODE.
6381 PROCESS may also be a number specifying the process id of the
6382 process to signal; in this case, the process need not be a child of
6384 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6386 Lisp_Object process
, sigcode
;
6390 if (INTEGERP (process
))
6392 pid
= XINT (process
);
6396 if (FLOATP (process
))
6398 pid
= (pid_t
) XFLOAT_DATA (process
);
6402 if (STRINGP (process
))
6405 if (tem
= Fget_process (process
), NILP (tem
))
6407 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6414 process
= get_process (process
);
6419 CHECK_PROCESS (process
);
6420 pid
= XPROCESS (process
)->pid
;
6422 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6426 #define parse_signal(NAME, VALUE) \
6427 else if (!xstrcasecmp (name, NAME)) \
6428 XSETINT (sigcode, VALUE)
6430 if (INTEGERP (sigcode
))
6434 unsigned char *name
;
6436 CHECK_SYMBOL (sigcode
);
6437 name
= SDATA (SYMBOL_NAME (sigcode
));
6439 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6445 parse_signal ("usr1", SIGUSR1
);
6448 parse_signal ("usr2", SIGUSR2
);
6451 parse_signal ("term", SIGTERM
);
6454 parse_signal ("hup", SIGHUP
);
6457 parse_signal ("int", SIGINT
);
6460 parse_signal ("quit", SIGQUIT
);
6463 parse_signal ("ill", SIGILL
);
6466 parse_signal ("abrt", SIGABRT
);
6469 parse_signal ("emt", SIGEMT
);
6472 parse_signal ("kill", SIGKILL
);
6475 parse_signal ("fpe", SIGFPE
);
6478 parse_signal ("bus", SIGBUS
);
6481 parse_signal ("segv", SIGSEGV
);
6484 parse_signal ("sys", SIGSYS
);
6487 parse_signal ("pipe", SIGPIPE
);
6490 parse_signal ("alrm", SIGALRM
);
6493 parse_signal ("urg", SIGURG
);
6496 parse_signal ("stop", SIGSTOP
);
6499 parse_signal ("tstp", SIGTSTP
);
6502 parse_signal ("cont", SIGCONT
);
6505 parse_signal ("chld", SIGCHLD
);
6508 parse_signal ("ttin", SIGTTIN
);
6511 parse_signal ("ttou", SIGTTOU
);
6514 parse_signal ("io", SIGIO
);
6517 parse_signal ("xcpu", SIGXCPU
);
6520 parse_signal ("xfsz", SIGXFSZ
);
6523 parse_signal ("vtalrm", SIGVTALRM
);
6526 parse_signal ("prof", SIGPROF
);
6529 parse_signal ("winch", SIGWINCH
);
6532 parse_signal ("info", SIGINFO
);
6535 error ("Undefined signal name %s", name
);
6540 return make_number (kill (pid
, XINT (sigcode
)));
6543 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6544 doc
: /* Make PROCESS see end-of-file in its input.
6545 EOF comes after any text already sent to it.
6546 PROCESS may be a process, a buffer, the name of a process or buffer, or
6547 nil, indicating the current buffer's process.
6548 If PROCESS is a network connection, or is a process communicating
6549 through a pipe (as opposed to a pty), then you cannot send any more
6550 text to PROCESS after you call this function.
6551 If PROCESS is a serial process, wait until all output written to the
6552 process has been transmitted to the serial port. */)
6554 Lisp_Object process
;
6557 struct coding_system
*coding
;
6559 if (DATAGRAM_CONN_P (process
))
6562 proc
= get_process (process
);
6563 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6565 /* Make sure the process is really alive. */
6566 if (XPROCESS (proc
)->raw_status_new
)
6567 update_status (XPROCESS (proc
));
6568 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6569 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6571 if (CODING_REQUIRE_FLUSHING (coding
))
6573 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6574 send_process (proc
, "", 0, Qnil
);
6577 if (XPROCESS (proc
)->pty_flag
)
6578 send_process (proc
, "\004", 1, Qnil
);
6579 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6582 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6583 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6585 /* Do nothing on Windows because writes are blocking. */
6589 int old_outfd
, new_outfd
;
6591 #ifdef HAVE_SHUTDOWN
6592 /* If this is a network connection, or socketpair is used
6593 for communication with the subprocess, call shutdown to cause EOF.
6594 (In some old system, shutdown to socketpair doesn't work.
6595 Then we just can't win.) */
6596 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6597 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6598 shutdown (XPROCESS (proc
)->outfd
, 1);
6599 /* In case of socketpair, outfd == infd, so don't close it. */
6600 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6601 emacs_close (XPROCESS (proc
)->outfd
);
6602 #else /* not HAVE_SHUTDOWN */
6603 emacs_close (XPROCESS (proc
)->outfd
);
6604 #endif /* not HAVE_SHUTDOWN */
6605 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6608 old_outfd
= XPROCESS (proc
)->outfd
;
6610 if (!proc_encode_coding_system
[new_outfd
])
6611 proc_encode_coding_system
[new_outfd
]
6612 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6613 bcopy (proc_encode_coding_system
[old_outfd
],
6614 proc_encode_coding_system
[new_outfd
],
6615 sizeof (struct coding_system
));
6616 bzero (proc_encode_coding_system
[old_outfd
],
6617 sizeof (struct coding_system
));
6619 XPROCESS (proc
)->outfd
= new_outfd
;
6624 /* Kill all processes associated with `buffer'.
6625 If `buffer' is nil, kill all processes */
6628 kill_buffer_processes (buffer
)
6631 Lisp_Object tail
, proc
;
6633 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6635 proc
= XCDR (XCAR (tail
));
6637 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6639 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6640 Fdelete_process (proc
);
6641 else if (XPROCESS (proc
)->infd
>= 0)
6642 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6647 /* On receipt of a signal that a child status has changed, loop asking
6648 about children with changed statuses until the system says there
6651 All we do is change the status; we do not run sentinels or print
6652 notifications. That is saved for the next time keyboard input is
6653 done, in order to avoid timing errors.
6655 ** WARNING: this can be called during garbage collection.
6656 Therefore, it must not be fooled by the presence of mark bits in
6659 ** USG WARNING: Although it is not obvious from the documentation
6660 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6661 signal() before executing at least one wait(), otherwise the
6662 handler will be called again, resulting in an infinite loop. The
6663 relevant portion of the documentation reads "SIGCLD signals will be
6664 queued and the signal-catching function will be continually
6665 reentered until the queue is empty". Invoking signal() causes the
6666 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6669 ** Malloc WARNING: This should never call malloc either directly or
6670 indirectly; if it does, that is a bug */
6674 sigchld_handler (signo
)
6677 int old_errno
= errno
;
6679 register struct Lisp_Process
*p
;
6680 extern EMACS_TIME
*input_available_clear_time
;
6682 SIGNAL_THREAD_CHECK (signo
);
6693 #endif /* no WUNTRACED */
6694 /* Keep trying to get a status until we get a definitive result. */
6698 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6700 while (pid
< 0 && errno
== EINTR
);
6704 /* PID == 0 means no processes found, PID == -1 means a real
6705 failure. We have done all our job, so return. */
6707 /* USG systems forget handlers when they are used;
6708 must reestablish each time */
6709 #if defined (USG) && !defined (POSIX_SIGNALS)
6710 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6717 #endif /* no WNOHANG */
6719 /* Find the process that signaled us, and record its status. */
6721 /* The process can have been deleted by Fdelete_process. */
6722 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6724 Lisp_Object xpid
= XCAR (tail
);
6725 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6726 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6728 XSETCAR (tail
, Qnil
);
6729 goto sigchld_end_of_loop
;
6733 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6735 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6737 proc
= XCDR (XCAR (tail
));
6738 p
= XPROCESS (proc
);
6739 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6744 /* Look for an asynchronous process whose pid hasn't been filled
6747 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6749 proc
= XCDR (XCAR (tail
));
6750 p
= XPROCESS (proc
);
6756 /* Change the status of the process that was found. */
6759 int clear_desc_flag
= 0;
6761 p
->tick
= ++process_tick
;
6763 p
->raw_status_new
= 1;
6765 /* If process has terminated, stop waiting for its output. */
6766 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6768 clear_desc_flag
= 1;
6770 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6771 if (clear_desc_flag
)
6773 FD_CLR (p
->infd
, &input_wait_mask
);
6774 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6777 /* Tell wait_reading_process_output that it needs to wake up and
6779 if (input_available_clear_time
)
6780 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6783 /* There was no asynchronous process found for that pid: we have
6784 a synchronous process. */
6787 synch_process_alive
= 0;
6789 /* Report the status of the synchronous process. */
6791 synch_process_retcode
= WRETCODE (w
);
6792 else if (WIFSIGNALED (w
))
6793 synch_process_termsig
= WTERMSIG (w
);
6795 /* Tell wait_reading_process_output that it needs to wake up and
6797 if (input_available_clear_time
)
6798 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6801 sigchld_end_of_loop
:
6804 /* On some systems, we must return right away.
6805 If any more processes want to signal us, we will
6807 Otherwise (on systems that have WNOHANG), loop around
6808 to use up all the processes that have something to tell us. */
6809 #if (defined WINDOWSNT \
6810 || (defined USG && !defined GNU_LINUX \
6811 && !(defined HPUX && defined WNOHANG)))
6812 #if defined (USG) && ! defined (POSIX_SIGNALS)
6813 signal (signo
, sigchld_handler
);
6817 #endif /* USG, but not HPUX with WNOHANG */
6820 #endif /* SIGCHLD */
6824 exec_sentinel_unwind (data
)
6827 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6832 exec_sentinel_error_handler (error
)
6835 cmd_error_internal (error
, "error in process sentinel: ");
6837 update_echo_area ();
6838 Fsleep_for (make_number (2), Qnil
);
6843 exec_sentinel (proc
, reason
)
6844 Lisp_Object proc
, reason
;
6846 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6847 register struct Lisp_Process
*p
= XPROCESS (proc
);
6848 int count
= SPECPDL_INDEX ();
6849 int outer_running_asynch_code
= running_asynch_code
;
6850 int waiting
= waiting_for_user_input_p
;
6852 if (inhibit_sentinels
)
6855 /* No need to gcpro these, because all we do with them later
6856 is test them for EQness, and none of them should be a string. */
6857 odeactivate
= Vdeactivate_mark
;
6858 XSETBUFFER (obuffer
, current_buffer
);
6859 okeymap
= current_buffer
->keymap
;
6861 sentinel
= p
->sentinel
;
6862 if (NILP (sentinel
))
6865 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6866 assure that it gets restored no matter how the sentinel exits. */
6868 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6869 /* Inhibit quit so that random quits don't screw up a running filter. */
6870 specbind (Qinhibit_quit
, Qt
);
6871 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6873 /* In case we get recursively called,
6874 and we already saved the match data nonrecursively,
6875 save the same match data in safely recursive fashion. */
6876 if (outer_running_asynch_code
)
6879 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6880 restore_search_regs ();
6881 record_unwind_save_match_data ();
6882 Fset_match_data (tem
, Qt
);
6885 /* For speed, if a search happens within this code,
6886 save the match data in a special nonrecursive fashion. */
6887 running_asynch_code
= 1;
6889 internal_condition_case_1 (read_process_output_call
,
6891 Fcons (proc
, Fcons (reason
, Qnil
))),
6892 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6893 exec_sentinel_error_handler
);
6895 /* If we saved the match data nonrecursively, restore it now. */
6896 restore_search_regs ();
6897 running_asynch_code
= outer_running_asynch_code
;
6899 Vdeactivate_mark
= odeactivate
;
6901 /* Restore waiting_for_user_input_p as it was
6902 when we were called, in case the filter clobbered it. */
6903 waiting_for_user_input_p
= waiting
;
6906 if (! EQ (Fcurrent_buffer (), obuffer
)
6907 || ! EQ (current_buffer
->keymap
, okeymap
))
6909 /* But do it only if the caller is actually going to read events.
6910 Otherwise there's no need to make him wake up, and it could
6911 cause trouble (for example it would make sit_for return). */
6912 if (waiting_for_user_input_p
== -1)
6913 record_asynch_buffer_change ();
6915 unbind_to (count
, Qnil
);
6918 /* Report all recent events of a change in process status
6919 (either run the sentinel or output a message).
6920 This is usually done while Emacs is waiting for keyboard input
6921 but can be done at other times. */
6924 status_notify (deleting_process
)
6925 struct Lisp_Process
*deleting_process
;
6927 register Lisp_Object proc
, buffer
;
6928 Lisp_Object tail
, msg
;
6929 struct gcpro gcpro1
, gcpro2
;
6933 /* We need to gcpro tail; if read_process_output calls a filter
6934 which deletes a process and removes the cons to which tail points
6935 from Vprocess_alist, and then causes a GC, tail is an unprotected
6939 /* Set this now, so that if new processes are created by sentinels
6940 that we run, we get called again to handle their status changes. */
6941 update_tick
= process_tick
;
6943 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6946 register struct Lisp_Process
*p
;
6948 proc
= Fcdr (XCAR (tail
));
6949 p
= XPROCESS (proc
);
6951 if (p
->tick
!= p
->update_tick
)
6953 p
->update_tick
= p
->tick
;
6955 /* If process is still active, read any output that remains. */
6956 while (! EQ (p
->filter
, Qt
)
6957 && ! EQ (p
->status
, Qconnect
)
6958 && ! EQ (p
->status
, Qlisten
)
6959 /* Network or serial process not stopped: */
6960 && ! EQ (p
->command
, Qt
)
6962 && p
!= deleting_process
6963 && read_process_output (proc
, p
->infd
) > 0);
6967 /* Get the text to use for the message. */
6968 if (p
->raw_status_new
)
6970 msg
= status_message (p
);
6972 /* If process is terminated, deactivate it or delete it. */
6974 if (CONSP (p
->status
))
6975 symbol
= XCAR (p
->status
);
6977 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6978 || EQ (symbol
, Qclosed
))
6980 if (delete_exited_processes
)
6981 remove_process (proc
);
6983 deactivate_process (proc
);
6986 /* The actions above may have further incremented p->tick.
6987 So set p->update_tick again
6988 so that an error in the sentinel will not cause
6989 this code to be run again. */
6990 p
->update_tick
= p
->tick
;
6991 /* Now output the message suitably. */
6992 if (!NILP (p
->sentinel
))
6993 exec_sentinel (proc
, msg
);
6994 /* Don't bother with a message in the buffer
6995 when a process becomes runnable. */
6996 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6998 Lisp_Object ro
, tem
;
6999 struct buffer
*old
= current_buffer
;
7000 int opoint
, opoint_byte
;
7001 int before
, before_byte
;
7003 ro
= XBUFFER (buffer
)->read_only
;
7005 /* Avoid error if buffer is deleted
7006 (probably that's why the process is dead, too) */
7007 if (NILP (XBUFFER (buffer
)->name
))
7009 Fset_buffer (buffer
);
7012 opoint_byte
= PT_BYTE
;
7013 /* Insert new output into buffer
7014 at the current end-of-output marker,
7015 thus preserving logical ordering of input and output. */
7016 if (XMARKER (p
->mark
)->buffer
)
7017 Fgoto_char (p
->mark
);
7019 SET_PT_BOTH (ZV
, ZV_BYTE
);
7022 before_byte
= PT_BYTE
;
7024 tem
= current_buffer
->read_only
;
7025 current_buffer
->read_only
= Qnil
;
7026 insert_string ("\nProcess ");
7027 Finsert (1, &p
->name
);
7028 insert_string (" ");
7030 current_buffer
->read_only
= tem
;
7031 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
7033 if (opoint
>= before
)
7034 SET_PT_BOTH (opoint
+ (PT
- before
),
7035 opoint_byte
+ (PT_BYTE
- before_byte
));
7037 SET_PT_BOTH (opoint
, opoint_byte
);
7039 set_buffer_internal (old
);
7044 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
7049 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
7050 Sset_process_coding_system
, 1, 3, 0,
7051 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
7052 DECODING will be used to decode subprocess output and ENCODING to
7053 encode subprocess input. */)
7054 (process
, decoding
, encoding
)
7055 register Lisp_Object process
, decoding
, encoding
;
7057 register struct Lisp_Process
*p
;
7059 CHECK_PROCESS (process
);
7060 p
= XPROCESS (process
);
7062 error ("Input file descriptor of %s closed", SDATA (p
->name
));
7064 error ("Output file descriptor of %s closed", SDATA (p
->name
));
7065 Fcheck_coding_system (decoding
);
7066 Fcheck_coding_system (encoding
);
7067 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7068 p
->decode_coding_system
= decoding
;
7069 p
->encode_coding_system
= encoding
;
7070 setup_process_coding_systems (process
);
7075 DEFUN ("process-coding-system",
7076 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7077 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7079 register Lisp_Object process
;
7081 CHECK_PROCESS (process
);
7082 return Fcons (XPROCESS (process
)->decode_coding_system
,
7083 XPROCESS (process
)->encode_coding_system
);
7086 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7087 Sset_process_filter_multibyte
, 2, 2, 0,
7088 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7089 If FLAG is non-nil, the filter is given multibyte strings.
7090 If FLAG is nil, the filter is given unibyte strings. In this case,
7091 all character code conversion except for end-of-line conversion is
7094 Lisp_Object process
, flag
;
7096 register struct Lisp_Process
*p
;
7098 CHECK_PROCESS (process
);
7099 p
= XPROCESS (process
);
7101 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
7102 setup_process_coding_systems (process
);
7107 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7108 Sprocess_filter_multibyte_p
, 1, 1, 0,
7109 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7111 Lisp_Object process
;
7113 register struct Lisp_Process
*p
;
7114 struct coding_system
*coding
;
7116 CHECK_PROCESS (process
);
7117 p
= XPROCESS (process
);
7118 coding
= proc_decode_coding_system
[p
->infd
];
7119 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7124 /* Add DESC to the set of keyboard input descriptors. */
7127 add_keyboard_wait_descriptor (desc
)
7130 FD_SET (desc
, &input_wait_mask
);
7131 FD_SET (desc
, &non_process_wait_mask
);
7132 if (desc
> max_keyboard_desc
)
7133 max_keyboard_desc
= desc
;
7136 static int add_gpm_wait_descriptor_called_flag
;
7139 add_gpm_wait_descriptor (desc
)
7142 if (! add_gpm_wait_descriptor_called_flag
)
7143 FD_CLR (0, &input_wait_mask
);
7144 add_gpm_wait_descriptor_called_flag
= 1;
7145 FD_SET (desc
, &input_wait_mask
);
7146 FD_SET (desc
, &gpm_wait_mask
);
7147 if (desc
> max_gpm_desc
)
7148 max_gpm_desc
= desc
;
7151 /* From now on, do not expect DESC to give keyboard input. */
7154 delete_keyboard_wait_descriptor (desc
)
7158 int lim
= max_keyboard_desc
;
7160 FD_CLR (desc
, &input_wait_mask
);
7161 FD_CLR (desc
, &non_process_wait_mask
);
7163 if (desc
== max_keyboard_desc
)
7164 for (fd
= 0; fd
< lim
; fd
++)
7165 if (FD_ISSET (fd
, &input_wait_mask
)
7166 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7167 && !FD_ISSET (fd
, &gpm_wait_mask
))
7168 max_keyboard_desc
= fd
;
7172 delete_gpm_wait_descriptor (desc
)
7176 int lim
= max_gpm_desc
;
7178 FD_CLR (desc
, &input_wait_mask
);
7179 FD_CLR (desc
, &non_process_wait_mask
);
7181 if (desc
== max_gpm_desc
)
7182 for (fd
= 0; fd
< lim
; fd
++)
7183 if (FD_ISSET (fd
, &input_wait_mask
)
7184 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7185 && !FD_ISSET (fd
, &non_process_wait_mask
))
7189 /* Return nonzero if *MASK has a bit set
7190 that corresponds to one of the keyboard input descriptors. */
7193 keyboard_bit_set (mask
)
7198 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
7199 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7200 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7206 /* Enumeration of and access to system processes a-la ps(1). */
7208 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7210 doc
: /* Return a list of numerical process IDs of all running processes.
7211 If this functionality is unsupported, return nil.
7213 See `process-attributes' for getting attributes of a process given its ID. */)
7216 return list_system_processes ();
7219 DEFUN ("process-attributes", Fprocess_attributes
,
7220 Sprocess_attributes
, 1, 1, 0,
7221 doc
: /* Return attributes of the process given by its PID, a number.
7223 Value is an alist where each element is a cons cell of the form
7227 If this functionality is unsupported, the value is nil.
7229 See `list-system-processes' for getting a list of all process IDs.
7231 The KEYs of the attributes that this function may return are listed
7232 below, together with the type of the associated VALUE (in parentheses).
7233 Not all platforms support all of these attributes; unsupported
7234 attributes will not appear in the returned alist.
7235 Unless explicitly indicated otherwise, numbers can have either
7236 integer or floating point values.
7238 euid -- Effective user User ID of the process (number)
7239 user -- User name corresponding to euid (string)
7240 egid -- Effective user Group ID of the process (number)
7241 group -- Group name corresponding to egid (string)
7242 comm -- Command name (executable name only) (string)
7243 state -- Process state code, such as "S", "R", or "T" (string)
7244 ppid -- Parent process ID (number)
7245 pgrp -- Process group ID (number)
7246 sess -- Session ID, i.e. process ID of session leader (number)
7247 ttname -- Controlling tty name (string)
7248 tpgid -- ID of foreground process group on the process's tty (number)
7249 minflt -- number of minor page faults (number)
7250 majflt -- number of major page faults (number)
7251 cminflt -- cumulative number of minor page faults (number)
7252 cmajflt -- cumulative number of major page faults (number)
7253 utime -- user time used by the process, in the (HIGH LOW USEC) format
7254 stime -- system time used by the process, in the (HIGH LOW USEC) format
7255 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7256 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7257 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7258 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7259 pri -- priority of the process (number)
7260 nice -- nice value of the process (number)
7261 thcount -- process thread count (number)
7262 start -- time the process started, in the (HIGH LOW USEC) format
7263 vsize -- virtual memory size of the process in KB's (number)
7264 rss -- resident set size of the process in KB's (number)
7265 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7266 pcpu -- percents of CPU time used by the process (floating-point number)
7267 pmem -- percents of total physical memory used by process's resident set
7268 (floating-point number)
7269 args -- command line which invoked the process (string). */)
7274 return system_process_attributes (pid
);
7282 inhibit_sentinels
= 0;
7286 if (! noninteractive
|| initialized
)
7288 signal (SIGCHLD
, sigchld_handler
);
7291 FD_ZERO (&input_wait_mask
);
7292 FD_ZERO (&non_keyboard_wait_mask
);
7293 FD_ZERO (&non_process_wait_mask
);
7294 max_process_desc
= 0;
7296 #ifdef NON_BLOCKING_CONNECT
7297 FD_ZERO (&connect_wait_mask
);
7298 num_pending_connects
= 0;
7301 #ifdef ADAPTIVE_READ_BUFFERING
7302 process_output_delay_count
= 0;
7303 process_output_skip
= 0;
7306 /* Don't do this, it caused infinite select loops. The display
7307 method should call add_keyboard_wait_descriptor on stdin if it
7310 FD_SET (0, &input_wait_mask
);
7313 Vprocess_alist
= Qnil
;
7315 deleted_pid_list
= Qnil
;
7317 for (i
= 0; i
< MAXDESC
; i
++)
7319 chan_process
[i
] = Qnil
;
7320 proc_buffered_char
[i
] = -1;
7322 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7323 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7324 #ifdef DATAGRAM_SOCKETS
7325 bzero (datagram_address
, sizeof datagram_address
);
7330 Lisp_Object subfeatures
= Qnil
;
7331 const struct socket_options
*sopt
;
7333 #define ADD_SUBFEATURE(key, val) \
7334 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7336 #ifdef NON_BLOCKING_CONNECT
7337 ADD_SUBFEATURE (QCnowait
, Qt
);
7339 #ifdef DATAGRAM_SOCKETS
7340 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7342 #ifdef HAVE_SEQPACKET
7343 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7345 #ifdef HAVE_LOCAL_SOCKETS
7346 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7348 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7350 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7352 #ifdef HAVE_GETSOCKNAME
7353 ADD_SUBFEATURE (QCservice
, Qt
);
7355 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7356 ADD_SUBFEATURE (QCserver
, Qt
);
7359 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7360 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7362 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7364 #endif /* HAVE_SOCKETS */
7366 #if defined (DARWIN_OS)
7367 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7368 processes. As such, we only change the default value. */
7371 char *release
= get_operating_system_release();
7372 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7373 && release
[1] == '.')) {
7374 Vprocess_connection_type
= Qnil
;
7383 Qprocessp
= intern_c_string ("processp");
7384 staticpro (&Qprocessp
);
7385 Qrun
= intern_c_string ("run");
7387 Qstop
= intern_c_string ("stop");
7389 Qsignal
= intern_c_string ("signal");
7390 staticpro (&Qsignal
);
7392 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7395 Qexit = intern_c_string ("exit");
7396 staticpro (&Qexit); */
7398 Qopen
= intern_c_string ("open");
7400 Qclosed
= intern_c_string ("closed");
7401 staticpro (&Qclosed
);
7402 Qconnect
= intern_c_string ("connect");
7403 staticpro (&Qconnect
);
7404 Qfailed
= intern_c_string ("failed");
7405 staticpro (&Qfailed
);
7406 Qlisten
= intern_c_string ("listen");
7407 staticpro (&Qlisten
);
7408 Qlocal
= intern_c_string ("local");
7409 staticpro (&Qlocal
);
7410 Qipv4
= intern_c_string ("ipv4");
7413 Qipv6
= intern_c_string ("ipv6");
7416 Qdatagram
= intern_c_string ("datagram");
7417 staticpro (&Qdatagram
);
7418 Qseqpacket
= intern_c_string ("seqpacket");
7419 staticpro (&Qseqpacket
);
7421 QCport
= intern_c_string (":port");
7422 staticpro (&QCport
);
7423 QCspeed
= intern_c_string (":speed");
7424 staticpro (&QCspeed
);
7425 QCprocess
= intern_c_string (":process");
7426 staticpro (&QCprocess
);
7428 QCbytesize
= intern_c_string (":bytesize");
7429 staticpro (&QCbytesize
);
7430 QCstopbits
= intern_c_string (":stopbits");
7431 staticpro (&QCstopbits
);
7432 QCparity
= intern_c_string (":parity");
7433 staticpro (&QCparity
);
7434 Qodd
= intern_c_string ("odd");
7436 Qeven
= intern_c_string ("even");
7438 QCflowcontrol
= intern_c_string (":flowcontrol");
7439 staticpro (&QCflowcontrol
);
7440 Qhw
= intern_c_string ("hw");
7442 Qsw
= intern_c_string ("sw");
7444 QCsummary
= intern_c_string (":summary");
7445 staticpro (&QCsummary
);
7447 Qreal
= intern_c_string ("real");
7449 Qnetwork
= intern_c_string ("network");
7450 staticpro (&Qnetwork
);
7451 Qserial
= intern_c_string ("serial");
7452 staticpro (&Qserial
);
7454 QCname
= intern_c_string (":name");
7455 staticpro (&QCname
);
7456 QCbuffer
= intern_c_string (":buffer");
7457 staticpro (&QCbuffer
);
7458 QChost
= intern_c_string (":host");
7459 staticpro (&QChost
);
7460 QCservice
= intern_c_string (":service");
7461 staticpro (&QCservice
);
7462 QCtype
= intern_c_string (":type");
7463 staticpro (&QCtype
);
7464 QClocal
= intern_c_string (":local");
7465 staticpro (&QClocal
);
7466 QCremote
= intern_c_string (":remote");
7467 staticpro (&QCremote
);
7468 QCcoding
= intern_c_string (":coding");
7469 staticpro (&QCcoding
);
7470 QCserver
= intern_c_string (":server");
7471 staticpro (&QCserver
);
7472 QCnowait
= intern_c_string (":nowait");
7473 staticpro (&QCnowait
);
7474 QCsentinel
= intern_c_string (":sentinel");
7475 staticpro (&QCsentinel
);
7476 QClog
= intern_c_string (":log");
7478 QCnoquery
= intern_c_string (":noquery");
7479 staticpro (&QCnoquery
);
7480 QCstop
= intern_c_string (":stop");
7481 staticpro (&QCstop
);
7482 QCoptions
= intern_c_string (":options");
7483 staticpro (&QCoptions
);
7484 QCplist
= intern_c_string (":plist");
7485 staticpro (&QCplist
);
7487 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7488 staticpro (&Qlast_nonmenu_event
);
7490 staticpro (&Vprocess_alist
);
7492 staticpro (&deleted_pid_list
);
7495 Qeuid
= intern_c_string ("euid");
7497 Qegid
= intern_c_string ("egid");
7499 Quser
= intern_c_string ("user");
7501 Qgroup
= intern_c_string ("group");
7502 staticpro (&Qgroup
);
7503 Qcomm
= intern_c_string ("comm");
7505 Qstate
= intern_c_string ("state");
7506 staticpro (&Qstate
);
7507 Qppid
= intern_c_string ("ppid");
7509 Qpgrp
= intern_c_string ("pgrp");
7511 Qsess
= intern_c_string ("sess");
7513 Qttname
= intern_c_string ("ttname");
7514 staticpro (&Qttname
);
7515 Qtpgid
= intern_c_string ("tpgid");
7516 staticpro (&Qtpgid
);
7517 Qminflt
= intern_c_string ("minflt");
7518 staticpro (&Qminflt
);
7519 Qmajflt
= intern_c_string ("majflt");
7520 staticpro (&Qmajflt
);
7521 Qcminflt
= intern_c_string ("cminflt");
7522 staticpro (&Qcminflt
);
7523 Qcmajflt
= intern_c_string ("cmajflt");
7524 staticpro (&Qcmajflt
);
7525 Qutime
= intern_c_string ("utime");
7526 staticpro (&Qutime
);
7527 Qstime
= intern_c_string ("stime");
7528 staticpro (&Qstime
);
7529 Qtime
= intern_c_string ("time");
7531 Qcutime
= intern_c_string ("cutime");
7532 staticpro (&Qcutime
);
7533 Qcstime
= intern_c_string ("cstime");
7534 staticpro (&Qcstime
);
7535 Qctime
= intern_c_string ("ctime");
7536 staticpro (&Qctime
);
7537 Qpri
= intern_c_string ("pri");
7539 Qnice
= intern_c_string ("nice");
7541 Qthcount
= intern_c_string ("thcount");
7542 staticpro (&Qthcount
);
7543 Qstart
= intern_c_string ("start");
7544 staticpro (&Qstart
);
7545 Qvsize
= intern_c_string ("vsize");
7546 staticpro (&Qvsize
);
7547 Qrss
= intern_c_string ("rss");
7549 Qetime
= intern_c_string ("etime");
7550 staticpro (&Qetime
);
7551 Qpcpu
= intern_c_string ("pcpu");
7553 Qpmem
= intern_c_string ("pmem");
7555 Qargs
= intern_c_string ("args");
7558 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7559 doc
: /* *Non-nil means delete processes immediately when they exit.
7560 A value of nil means don't delete them until `list-processes' is run. */);
7562 delete_exited_processes
= 1;
7564 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7565 doc
: /* Control type of device used to communicate with subprocesses.
7566 Values are nil to use a pipe, or t or `pty' to use a pty.
7567 The value has no effect if the system has no ptys or if all ptys are busy:
7568 then a pipe is used in any case.
7569 The value takes effect when `start-process' is called. */);
7570 Vprocess_connection_type
= Qt
;
7572 #ifdef ADAPTIVE_READ_BUFFERING
7573 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7574 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7575 On some systems, when Emacs reads the output from a subprocess, the output data
7576 is read in very small blocks, potentially resulting in very poor performance.
7577 This behavior can be remedied to some extent by setting this variable to a
7578 non-nil value, as it will automatically delay reading from such processes, to
7579 allow them to produce more output before Emacs tries to read it.
7580 If the value is t, the delay is reset after each write to the process; any other
7581 non-nil value means that the delay is not reset on write.
7582 The variable takes effect when `start-process' is called. */);
7583 Vprocess_adaptive_read_buffering
= Qt
;
7586 defsubr (&Sprocessp
);
7587 defsubr (&Sget_process
);
7588 defsubr (&Sget_buffer_process
);
7589 defsubr (&Sdelete_process
);
7590 defsubr (&Sprocess_status
);
7591 defsubr (&Sprocess_exit_status
);
7592 defsubr (&Sprocess_id
);
7593 defsubr (&Sprocess_name
);
7594 defsubr (&Sprocess_tty_name
);
7595 defsubr (&Sprocess_command
);
7596 defsubr (&Sset_process_buffer
);
7597 defsubr (&Sprocess_buffer
);
7598 defsubr (&Sprocess_mark
);
7599 defsubr (&Sset_process_filter
);
7600 defsubr (&Sprocess_filter
);
7601 defsubr (&Sset_process_sentinel
);
7602 defsubr (&Sprocess_sentinel
);
7603 defsubr (&Sset_process_window_size
);
7604 defsubr (&Sset_process_inherit_coding_system_flag
);
7605 defsubr (&Sprocess_inherit_coding_system_flag
);
7606 defsubr (&Sset_process_query_on_exit_flag
);
7607 defsubr (&Sprocess_query_on_exit_flag
);
7608 defsubr (&Sprocess_contact
);
7609 defsubr (&Sprocess_plist
);
7610 defsubr (&Sset_process_plist
);
7611 defsubr (&Slist_processes
);
7612 defsubr (&Sprocess_list
);
7613 defsubr (&Sstart_process
);
7615 defsubr (&Sserial_process_configure
);
7616 defsubr (&Smake_serial_process
);
7617 #endif /* HAVE_SERIAL */
7619 defsubr (&Sset_network_process_option
);
7620 defsubr (&Smake_network_process
);
7621 defsubr (&Sformat_network_address
);
7622 #endif /* HAVE_SOCKETS */
7623 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7625 defsubr (&Snetwork_interface_list
);
7627 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7628 defsubr (&Snetwork_interface_info
);
7630 #endif /* HAVE_SOCKETS ... */
7631 #ifdef DATAGRAM_SOCKETS
7632 defsubr (&Sprocess_datagram_address
);
7633 defsubr (&Sset_process_datagram_address
);
7635 defsubr (&Saccept_process_output
);
7636 defsubr (&Sprocess_send_region
);
7637 defsubr (&Sprocess_send_string
);
7638 defsubr (&Sinterrupt_process
);
7639 defsubr (&Skill_process
);
7640 defsubr (&Squit_process
);
7641 defsubr (&Sstop_process
);
7642 defsubr (&Scontinue_process
);
7643 defsubr (&Sprocess_running_child_p
);
7644 defsubr (&Sprocess_send_eof
);
7645 defsubr (&Ssignal_process
);
7646 defsubr (&Swaiting_for_user_input_p
);
7647 defsubr (&Sprocess_type
);
7648 defsubr (&Sset_process_coding_system
);
7649 defsubr (&Sprocess_coding_system
);
7650 defsubr (&Sset_process_filter_multibyte
);
7651 defsubr (&Sprocess_filter_multibyte_p
);
7652 defsubr (&Slist_system_processes
);
7653 defsubr (&Sprocess_attributes
);
7657 #else /* not subprocesses */
7659 #include <sys/types.h>
7661 #include <sys/stat.h>
7665 #ifdef HAVE_UNISTD_H
7670 #include "systime.h"
7671 #include "character.h"
7673 #include "termopts.h"
7674 #include "sysselect.h"
7676 extern int frame_garbaged
;
7678 extern EMACS_TIME
timer_check ();
7679 extern int timers_run
;
7681 Lisp_Object QCtype
, QCname
;
7683 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
7684 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
7685 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
7686 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
7688 /* As described above, except assuming that there are no subprocesses:
7690 Wait for timeout to elapse and/or keyboard input to be available.
7693 timeout in seconds, or
7694 zero for no limit, or
7695 -1 means gobble data immediately available but don't wait for any.
7697 read_kbd is a Lisp_Object:
7698 0 to ignore keyboard input, or
7699 1 to return when input is available, or
7700 -1 means caller will actually read the input, so don't throw to
7703 see full version for other parameters. We know that wait_proc will
7704 always be NULL, since `subprocesses' isn't defined.
7706 do_display != 0 means redisplay should be done to show subprocess
7707 output that arrives.
7709 Return true if we received input from any process. */
7712 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7713 wait_for_cell
, wait_proc
, just_wait_proc
)
7714 int time_limit
, microsecs
, read_kbd
, do_display
;
7715 Lisp_Object wait_for_cell
;
7716 struct Lisp_Process
*wait_proc
;
7720 EMACS_TIME end_time
, timeout
;
7721 SELECT_TYPE waitchannels
;
7724 /* What does time_limit really mean? */
7725 if (time_limit
|| microsecs
)
7727 EMACS_GET_TIME (end_time
);
7728 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7729 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7732 /* Turn off periodic alarms (in case they are in use)
7733 and then turn off any other atimers,
7734 because the select emulator uses alarms. */
7736 turn_on_atimers (0);
7740 int timeout_reduced_for_timers
= 0;
7742 /* If calling from keyboard input, do not quit
7743 since we want to return C-g as an input character.
7744 Otherwise, do pending quit if requested. */
7748 /* Exit now if the cell we're waiting for became non-nil. */
7749 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7752 /* Compute time from now till when time limit is up */
7753 /* Exit if already run out */
7754 if (time_limit
== -1)
7756 /* -1 specified for timeout means
7757 gobble output available now
7758 but don't wait at all. */
7760 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7762 else if (time_limit
|| microsecs
)
7764 EMACS_GET_TIME (timeout
);
7765 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7766 if (EMACS_TIME_NEG_P (timeout
))
7771 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7774 /* If our caller will not immediately handle keyboard events,
7775 run timer events directly.
7776 (Callers that will immediately read keyboard events
7777 call timer_delay on their own.) */
7778 if (NILP (wait_for_cell
))
7780 EMACS_TIME timer_delay
;
7784 int old_timers_run
= timers_run
;
7785 timer_delay
= timer_check (1);
7786 if (timers_run
!= old_timers_run
&& do_display
)
7787 /* We must retry, since a timer may have requeued itself
7788 and that could alter the time delay. */
7789 redisplay_preserve_echo_area (14);
7793 while (!detect_input_pending ());
7795 /* If there is unread keyboard input, also return. */
7797 && requeued_events_pending_p ())
7800 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7802 EMACS_TIME difference
;
7803 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7804 if (EMACS_TIME_NEG_P (difference
))
7806 timeout
= timer_delay
;
7807 timeout_reduced_for_timers
= 1;
7812 /* Cause C-g and alarm signals to take immediate action,
7813 and cause input available signals to zero out timeout. */
7815 set_waiting_for_input (&timeout
);
7817 /* Wait till there is something to do. */
7819 if (! read_kbd
&& NILP (wait_for_cell
))
7820 FD_ZERO (&waitchannels
);
7822 FD_SET (0, &waitchannels
);
7824 /* If a frame has been newly mapped and needs updating,
7825 reprocess its display stuff. */
7826 if (frame_garbaged
&& do_display
)
7828 clear_waiting_for_input ();
7829 redisplay_preserve_echo_area (15);
7831 set_waiting_for_input (&timeout
);
7834 if (read_kbd
&& detect_input_pending ())
7837 FD_ZERO (&waitchannels
);
7840 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7845 /* Make C-g and alarm signals set flags again */
7846 clear_waiting_for_input ();
7848 /* If we woke up due to SIGWINCH, actually change size now. */
7849 do_pending_window_change (0);
7851 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7852 /* We waited the full specified time, so return now. */
7857 /* If the system call was interrupted, then go around the
7859 if (xerrno
== EINTR
)
7860 FD_ZERO (&waitchannels
);
7862 error ("select error: %s", emacs_strerror (xerrno
));
7865 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7866 /* System sometimes fails to deliver SIGIO. */
7867 kill (getpid (), SIGIO
);
7870 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7871 kill (getpid (), SIGIO
);
7874 /* Check for keyboard input */
7877 && detect_input_pending_run_timers (do_display
))
7879 swallow_events (do_display
);
7880 if (detect_input_pending_run_timers (do_display
))
7884 /* If there is unread keyboard input, also return. */
7886 && requeued_events_pending_p ())
7889 /* If wait_for_cell. check for keyboard input
7890 but don't run any timers.
7891 ??? (It seems wrong to me to check for keyboard
7892 input at all when wait_for_cell, but the code
7893 has been this way since July 1994.
7894 Try changing this after version 19.31.) */
7895 if (! NILP (wait_for_cell
)
7896 && detect_input_pending ())
7898 swallow_events (do_display
);
7899 if (detect_input_pending ())
7903 /* Exit now if the cell we're waiting for became non-nil. */
7904 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7914 /* Don't confuse make-docfile by having two doc strings for this function.
7915 make-docfile does not pay attention to #if, for good reason! */
7916 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7919 register Lisp_Object name
;
7924 /* Don't confuse make-docfile by having two doc strings for this function.
7925 make-docfile does not pay attention to #if, for good reason! */
7926 DEFUN ("process-inherit-coding-system-flag",
7927 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7931 register Lisp_Object process
;
7933 /* Ignore the argument and return the value of
7934 inherit-process-coding-system. */
7935 return inherit_process_coding_system
? Qt
: Qnil
;
7938 /* Kill all processes associated with `buffer'.
7939 If `buffer' is nil, kill all processes.
7940 Since we have no subprocesses, this does nothing. */
7943 kill_buffer_processes (buffer
)
7948 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7950 doc
: /* Return a list of numerical process IDs of all running processes.
7951 If this functionality is unsupported, return nil.
7953 See `process-attributes' for getting attributes of a process given its ID. */)
7956 return list_system_processes ();
7959 DEFUN ("process-attributes", Fprocess_attributes
,
7960 Sprocess_attributes
, 1, 1, 0,
7961 doc
: /* Return attributes of the process given by its PID, a number.
7963 Value is an alist where each element is a cons cell of the form
7967 If this functionality is unsupported, the value is nil.
7969 See `list-system-processes' for getting a list of all process IDs.
7971 The KEYs of the attributes that this function may return are listed
7972 below, together with the type of the associated VALUE (in parentheses).
7973 Not all platforms support all of these attributes; unsupported
7974 attributes will not appear in the returned alist.
7975 Unless explicitly indicated otherwise, numbers can have either
7976 integer or floating point values.
7978 euid -- Effective user User ID of the process (number)
7979 user -- User name corresponding to euid (string)
7980 egid -- Effective user Group ID of the process (number)
7981 group -- Group name corresponding to egid (string)
7982 comm -- Command name (executable name only) (string)
7983 state -- Process state code, such as "S", "R", or "T" (string)
7984 ppid -- Parent process ID (number)
7985 pgrp -- Process group ID (number)
7986 sess -- Session ID, i.e. process ID of session leader (number)
7987 ttname -- Controlling tty name (string)
7988 tpgid -- ID of foreground process group on the process's tty (number)
7989 minflt -- number of minor page faults (number)
7990 majflt -- number of major page faults (number)
7991 cminflt -- cumulative number of minor page faults (number)
7992 cmajflt -- cumulative number of major page faults (number)
7993 utime -- user time used by the process, in the (HIGH LOW USEC) format
7994 stime -- system time used by the process, in the (HIGH LOW USEC) format
7995 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7996 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7997 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7998 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7999 pri -- priority of the process (number)
8000 nice -- nice value of the process (number)
8001 thcount -- process thread count (number)
8002 start -- time the process started, in the (HIGH LOW USEC) format
8003 vsize -- virtual memory size of the process in KB's (number)
8004 rss -- resident set size of the process in KB's (number)
8005 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
8006 pcpu -- percents of CPU time used by the process (floating-point number)
8007 pmem -- percents of total physical memory used by process's resident set
8008 (floating-point number)
8009 args -- command line which invoked the process (string). */)
8014 return system_process_attributes (pid
);
8025 QCtype
= intern_c_string (":type");
8026 staticpro (&QCtype
);
8027 QCname
= intern_c_string (":name");
8028 staticpro (&QCname
);
8029 QCtype
= intern_c_string (":type");
8030 staticpro (&QCtype
);
8031 QCname
= intern_c_string (":name");
8032 staticpro (&QCname
);
8033 Qeuid
= intern_c_string ("euid");
8035 Qegid
= intern_c_string ("egid");
8037 Quser
= intern_c_string ("user");
8039 Qgroup
= intern_c_string ("group");
8040 staticpro (&Qgroup
);
8041 Qcomm
= intern_c_string ("comm");
8043 Qstate
= intern_c_string ("state");
8044 staticpro (&Qstate
);
8045 Qppid
= intern_c_string ("ppid");
8047 Qpgrp
= intern_c_string ("pgrp");
8049 Qsess
= intern_c_string ("sess");
8051 Qttname
= intern_c_string ("ttname");
8052 staticpro (&Qttname
);
8053 Qtpgid
= intern_c_string ("tpgid");
8054 staticpro (&Qtpgid
);
8055 Qminflt
= intern_c_string ("minflt");
8056 staticpro (&Qminflt
);
8057 Qmajflt
= intern_c_string ("majflt");
8058 staticpro (&Qmajflt
);
8059 Qcminflt
= intern_c_string ("cminflt");
8060 staticpro (&Qcminflt
);
8061 Qcmajflt
= intern_c_string ("cmajflt");
8062 staticpro (&Qcmajflt
);
8063 Qutime
= intern_c_string ("utime");
8064 staticpro (&Qutime
);
8065 Qstime
= intern_c_string ("stime");
8066 staticpro (&Qstime
);
8067 Qtime
= intern_c_string ("time");
8069 Qcutime
= intern_c_string ("cutime");
8070 staticpro (&Qcutime
);
8071 Qcstime
= intern_c_string ("cstime");
8072 staticpro (&Qcstime
);
8073 Qctime
= intern_c_string ("ctime");
8074 staticpro (&Qctime
);
8075 Qpri
= intern_c_string ("pri");
8077 Qnice
= intern_c_string ("nice");
8079 Qthcount
= intern_c_string ("thcount");
8080 staticpro (&Qthcount
);
8081 Qstart
= intern_c_string ("start");
8082 staticpro (&Qstart
);
8083 Qvsize
= intern_c_string ("vsize");
8084 staticpro (&Qvsize
);
8085 Qrss
= intern_c_string ("rss");
8087 Qetime
= intern_c_string ("etime");
8088 staticpro (&Qetime
);
8089 Qpcpu
= intern_c_string ("pcpu");
8091 Qpmem
= intern_c_string ("pmem");
8093 Qargs
= intern_c_string ("args");
8096 defsubr (&Sget_buffer_process
);
8097 defsubr (&Sprocess_inherit_coding_system_flag
);
8098 defsubr (&Slist_system_processes
);
8099 defsubr (&Sprocess_attributes
);
8103 #endif /* not subprocesses */
8105 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
8106 (do not change this comment) */