1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995,
3 1996, 1998, 1999, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
25 /* This file is split into two parts by the following preprocessor
26 conditional. The 'then' clause contains all of the support for
27 asynchronous subprocesses. The 'else' clause contains stub
28 versions of some of the asynchronous subprocess routines that are
29 often called elsewhere in Emacs, so we don't have to #ifdef the
30 sections that call them. */
38 #include <sys/types.h> /* some typedefs are used in sys/file.h */
42 #ifdef HAVE_INTTYPES_H
54 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
55 #include <sys/socket.h>
57 #include <netinet/in.h>
58 #include <arpa/inet.h>
60 /* Are local (unix) sockets supported? */
61 #if defined (HAVE_SYS_UN_H)
62 #if !defined (AF_LOCAL) && defined (AF_UNIX)
63 #define AF_LOCAL AF_UNIX
66 #define HAVE_LOCAL_SOCKETS
70 #endif /* HAVE_SOCKETS */
72 #if defined(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
;
2549 else if (STRINGP (address
))
2551 #ifdef HAVE_LOCAL_SOCKETS
2552 if (family
== AF_LOCAL
)
2554 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2555 cp
= SDATA (address
);
2556 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2557 sockun
->sun_path
[i
] = *cp
++;
2558 sa
->sa_family
= family
;
2565 p
= XVECTOR (XCDR (address
));
2566 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2569 for (i
= 0; i
< len
; i
++)
2570 if (INTEGERP (p
->contents
[i
]))
2571 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2574 #ifdef DATAGRAM_SOCKETS
2575 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2577 doc
: /* Get the current datagram address associated with PROCESS. */)
2579 Lisp_Object process
;
2583 CHECK_PROCESS (process
);
2585 if (!DATAGRAM_CONN_P (process
))
2588 channel
= XPROCESS (process
)->infd
;
2589 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2590 datagram_address
[channel
].len
);
2593 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2595 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2596 Returns nil upon error setting address, ADDRESS otherwise. */)
2598 Lisp_Object process
, address
;
2603 CHECK_PROCESS (process
);
2605 if (!DATAGRAM_CONN_P (process
))
2608 channel
= XPROCESS (process
)->infd
;
2610 len
= get_lisp_to_sockaddr_size (address
, &family
);
2611 if (datagram_address
[channel
].len
!= len
)
2613 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2619 static const struct socket_options
{
2620 /* The name of this option. Should be lowercase version of option
2621 name without SO_ prefix. */
2623 /* Option level SOL_... */
2625 /* Option number SO_... */
2627 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2628 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2629 } socket_options
[] =
2631 #ifdef SO_BINDTODEVICE
2632 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2635 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2638 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2641 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2644 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2647 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2650 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2653 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2655 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2658 /* Set option OPT to value VAL on socket S.
2660 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2661 Signals an error if setting a known option fails.
2665 set_socket_option (s
, opt
, val
)
2667 Lisp_Object opt
, val
;
2670 const struct socket_options
*sopt
;
2675 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2676 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2677 if (strcmp (name
, sopt
->name
) == 0)
2680 switch (sopt
->opttype
)
2685 optval
= NILP (val
) ? 0 : 1;
2686 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2687 &optval
, sizeof (optval
));
2695 optval
= XINT (val
);
2697 error ("Bad option value for %s", name
);
2698 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2699 &optval
, sizeof (optval
));
2703 #ifdef SO_BINDTODEVICE
2706 char devname
[IFNAMSIZ
+1];
2708 /* This is broken, at least in the Linux 2.4 kernel.
2709 To unbind, the arg must be a zero integer, not the empty string.
2710 This should work on all systems. KFS. 2003-09-23. */
2711 bzero (devname
, sizeof devname
);
2714 char *arg
= (char *) SDATA (val
);
2715 int len
= min (strlen (arg
), IFNAMSIZ
);
2716 bcopy (arg
, devname
, len
);
2718 else if (!NILP (val
))
2719 error ("Bad option value for %s", name
);
2720 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2729 struct linger linger
;
2732 linger
.l_linger
= 0;
2734 linger
.l_linger
= XINT (val
);
2736 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2737 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2738 &linger
, sizeof (linger
));
2748 report_file_error ("Cannot set network option",
2749 Fcons (opt
, Fcons (val
, Qnil
)));
2750 return (1 << sopt
->optbit
);
2754 DEFUN ("set-network-process-option",
2755 Fset_network_process_option
, Sset_network_process_option
,
2757 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2758 See `make-network-process' for a list of options and values.
2759 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2760 OPTION is not a supported option, return nil instead; otherwise return t. */)
2761 (process
, option
, value
, no_error
)
2762 Lisp_Object process
, option
, value
;
2763 Lisp_Object no_error
;
2766 struct Lisp_Process
*p
;
2768 CHECK_PROCESS (process
);
2769 p
= XPROCESS (process
);
2770 if (!NETCONN1_P (p
))
2771 error ("Process is not a network process");
2775 error ("Process is not running");
2777 if (set_socket_option (s
, option
, value
))
2779 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2783 if (NILP (no_error
))
2784 error ("Unknown or unsupported option");
2791 DEFUN ("serial-process-configure",
2792 Fserial_process_configure
,
2793 Sserial_process_configure
,
2795 doc
: /* Configure speed, bytesize, etc. of a serial process.
2797 Arguments are specified as keyword/argument pairs. Attributes that
2798 are not given are re-initialized from the process's current
2799 configuration (available via the function `process-contact') or set to
2800 reasonable default values. The following arguments are defined:
2806 -- Any of these arguments can be given to identify the process that is
2807 to be configured. If none of these arguments is given, the current
2808 buffer's process is used.
2810 :speed SPEED -- SPEED is the speed of the serial port in bits per
2811 second, also called baud rate. Any value can be given for SPEED, but
2812 most serial ports work only at a few defined values between 1200 and
2813 115200, with 9600 being the most common value. If SPEED is nil, the
2814 serial port is not configured any further, i.e., all other arguments
2815 are ignored. This may be useful for special serial ports such as
2816 Bluetooth-to-serial converters which can only be configured through AT
2817 commands. A value of nil for SPEED can be used only when passed
2818 through `make-serial-process' or `serial-term'.
2820 :bytesize BYTESIZE -- BYTESIZE is the number of bits per byte, which
2821 can be 7 or 8. If BYTESIZE is not given or nil, a value of 8 is used.
2823 :parity PARITY -- PARITY can be nil (don't use parity), the symbol
2824 `odd' (use odd parity), or the symbol `even' (use even parity). If
2825 PARITY is not given, no parity is used.
2827 :stopbits STOPBITS -- STOPBITS is the number of stopbits used to
2828 terminate a byte transmission. STOPBITS can be 1 or 2. If STOPBITS
2829 is not given or nil, 1 stopbit is used.
2831 :flowcontrol FLOWCONTROL -- FLOWCONTROL determines the type of
2832 flowcontrol to be used, which is either nil (don't use flowcontrol),
2833 the symbol `hw' (use RTS/CTS hardware flowcontrol), or the symbol `sw'
2834 \(use XON/XOFF software flowcontrol). If FLOWCONTROL is not given, no
2835 flowcontrol is used.
2837 `serial-process-configure' is called by `make-serial-process' for the
2838 initial configuration of the serial port.
2842 \(serial-process-configure :process "/dev/ttyS0" :speed 1200)
2844 \(serial-process-configure
2845 :buffer "COM1" :stopbits 1 :parity 'odd :flowcontrol 'hw)
2847 \(serial-process-configure :port "\\\\.\\COM13" :bytesize 7)
2849 usage: (serial-process-configure &rest ARGS) */)
2854 struct Lisp_Process
*p
;
2855 Lisp_Object contact
= Qnil
;
2856 Lisp_Object proc
= Qnil
;
2857 struct gcpro gcpro1
;
2859 contact
= Flist (nargs
, args
);
2862 proc
= Fplist_get (contact
, QCprocess
);
2864 proc
= Fplist_get (contact
, QCname
);
2866 proc
= Fplist_get (contact
, QCbuffer
);
2868 proc
= Fplist_get (contact
, QCport
);
2869 proc
= get_process (proc
);
2870 p
= XPROCESS (proc
);
2871 if (!EQ (p
->type
, Qserial
))
2872 error ("Not a serial process");
2874 if (NILP (Fplist_get (p
->childp
, QCspeed
)))
2880 serial_configure (p
, contact
);
2886 /* Used by make-serial-process to recover from errors. */
2887 Lisp_Object
make_serial_process_unwind (Lisp_Object proc
)
2889 if (!PROCESSP (proc
))
2891 remove_process (proc
);
2895 DEFUN ("make-serial-process", Fmake_serial_process
, Smake_serial_process
,
2897 doc
: /* Create and return a serial port process.
2899 In Emacs, serial port connections are represented by process objects,
2900 so input and output work as for subprocesses, and `delete-process'
2901 closes a serial port connection. However, a serial process has no
2902 process id, it cannot be signaled, and the status codes are different
2903 from normal processes.
2905 `make-serial-process' creates a process and a buffer, on which you
2906 probably want to use `process-send-string'. Try \\[serial-term] for
2907 an interactive terminal. See below for examples.
2909 Arguments are specified as keyword/argument pairs. The following
2910 arguments are defined:
2912 :port PORT -- (mandatory) PORT is the path or name of the serial port.
2913 For example, this could be "/dev/ttyS0" on Unix. On Windows, this
2914 could be "COM1", or "\\\\.\\COM10" for ports higher than COM9 (double
2915 the backslashes in strings).
2917 :speed SPEED -- (mandatory) is handled by `serial-process-configure',
2918 which is called by `make-serial-process'.
2920 :name NAME -- NAME is the name of the process. If NAME is not given,
2921 the value of PORT is used.
2923 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2924 with the process. Process output goes at the end of that buffer,
2925 unless you specify an output stream or filter function to handle the
2926 output. If BUFFER is not given, the value of NAME is used.
2928 :coding CODING -- If CODING is a symbol, it specifies the coding
2929 system used for both reading and writing for this process. If CODING
2930 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2931 ENCODING is used for writing.
2933 :noquery BOOL -- When exiting Emacs, query the user if BOOL is nil and
2934 the process is running. If BOOL is not given, query before exiting.
2936 :stop BOOL -- Start process in the `stopped' state if BOOL is non-nil.
2937 In the stopped state, a serial process does not accept incoming data,
2938 but you can send outgoing data. The stopped state is cleared by
2939 `continue-process' and set by `stop-process'.
2941 :filter FILTER -- Install FILTER as the process filter.
2943 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2945 :plist PLIST -- Install PLIST as the initial plist of the process.
2952 -- These arguments are handled by `serial-process-configure', which is
2953 called by `make-serial-process'.
2955 The original argument list, possibly modified by later configuration,
2956 is available via the function `process-contact'.
2960 \(make-serial-process :port "/dev/ttyS0" :speed 9600)
2962 \(make-serial-process :port "COM1" :speed 115200 :stopbits 2)
2964 \(make-serial-process :port "\\\\.\\COM13" :speed 1200 :bytesize 7 :parity 'odd)
2966 \(make-serial-process :port "/dev/tty.BlueConsole-SPP-1" :speed nil)
2968 usage: (make-serial-process &rest ARGS) */)
2974 Lisp_Object proc
, contact
, port
;
2975 struct Lisp_Process
*p
;
2976 struct gcpro gcpro1
;
2977 Lisp_Object name
, buffer
;
2978 Lisp_Object tem
, val
;
2979 int specpdl_count
= -1;
2984 contact
= Flist (nargs
, args
);
2987 port
= Fplist_get (contact
, QCport
);
2989 error ("No port specified");
2990 CHECK_STRING (port
);
2992 if (NILP (Fplist_member (contact
, QCspeed
)))
2993 error (":speed not specified");
2994 if (!NILP (Fplist_get (contact
, QCspeed
)))
2995 CHECK_NUMBER (Fplist_get (contact
, QCspeed
));
2997 name
= Fplist_get (contact
, QCname
);
3000 CHECK_STRING (name
);
3001 proc
= make_process (name
);
3002 specpdl_count
= SPECPDL_INDEX ();
3003 record_unwind_protect (make_serial_process_unwind
, proc
);
3004 p
= XPROCESS (proc
);
3006 fd
= serial_open ((char*) SDATA (port
));
3009 if (fd
> max_process_desc
)
3010 max_process_desc
= fd
;
3011 chan_process
[fd
] = proc
;
3013 buffer
= Fplist_get (contact
, QCbuffer
);
3016 buffer
= Fget_buffer_create (buffer
);
3019 p
->childp
= contact
;
3020 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3022 p
->sentinel
= Fplist_get (contact
, QCsentinel
);
3023 p
->filter
= Fplist_get (contact
, QCfilter
);
3025 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3026 p
->kill_without_query
= 1;
3027 if (tem
= Fplist_get (contact
, QCstop
), !NILP (tem
))
3031 if (!EQ (p
->command
, Qt
))
3033 FD_SET (fd
, &input_wait_mask
);
3034 FD_SET (fd
, &non_keyboard_wait_mask
);
3037 if (BUFFERP (buffer
))
3039 set_marker_both (p
->mark
, buffer
,
3040 BUF_ZV (XBUFFER (buffer
)),
3041 BUF_ZV_BYTE (XBUFFER (buffer
)));
3044 tem
= Fplist_member (contact
, QCcoding
);
3045 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3051 val
= XCAR (XCDR (tem
));
3055 else if (!NILP (Vcoding_system_for_read
))
3056 val
= Vcoding_system_for_read
;
3057 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3058 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3060 p
->decode_coding_system
= val
;
3065 val
= XCAR (XCDR (tem
));
3069 else if (!NILP (Vcoding_system_for_write
))
3070 val
= Vcoding_system_for_write
;
3071 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3072 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3074 p
->encode_coding_system
= val
;
3076 setup_process_coding_systems (proc
);
3077 p
->decoding_buf
= make_uninit_string (0);
3078 p
->decoding_carryover
= 0;
3079 p
->encoding_buf
= make_uninit_string (0);
3080 p
->inherit_coding_system_flag
3081 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3083 Fserial_process_configure(nargs
, args
);
3085 specpdl_ptr
= specpdl
+ specpdl_count
;
3090 #endif /* HAVE_SERIAL */
3092 /* Create a network stream/datagram client/server process. Treated
3093 exactly like a normal process when reading and writing. Primary
3094 differences are in status display and process deletion. A network
3095 connection has no PID; you cannot signal it. All you can do is
3096 stop/continue it and deactivate/close it via delete-process */
3098 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
3100 doc
: /* Create and return a network server or client process.
3102 In Emacs, network connections are represented by process objects, so
3103 input and output work as for subprocesses and `delete-process' closes
3104 a network connection. However, a network process has no process id,
3105 it cannot be signaled, and the status codes are different from normal
3108 Arguments are specified as keyword/argument pairs. The following
3109 arguments are defined:
3111 :name NAME -- NAME is name for process. It is modified if necessary
3114 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
3115 with the process. Process output goes at end of that buffer, unless
3116 you specify an output stream or filter function to handle the output.
3117 BUFFER may be also nil, meaning that this process is not associated
3120 :host HOST -- HOST is name of the host to connect to, or its IP
3121 address. The symbol `local' specifies the local host. If specified
3122 for a server process, it must be a valid name or address for the local
3123 host, and only clients connecting to that address will be accepted.
3125 :service SERVICE -- SERVICE is name of the service desired, or an
3126 integer specifying a port number to connect to. If SERVICE is t,
3127 a random port number is selected for the server. (If Emacs was
3128 compiled with getaddrinfo, a port number can also be specified as a
3129 string, e.g. "80", as well as an integer. This is not portable.)
3131 :type TYPE -- TYPE is the type of connection. The default (nil) is a
3132 stream type connection, `datagram' creates a datagram type connection,
3133 `seqpacket' creates a reliable datagram connection.
3135 :family FAMILY -- FAMILY is the address (and protocol) family for the
3136 service specified by HOST and SERVICE. The default (nil) is to use
3137 whatever address family (IPv4 or IPv6) that is defined for the host
3138 and port number specified by HOST and SERVICE. Other address families
3140 local -- for a local (i.e. UNIX) address specified by SERVICE.
3141 ipv4 -- use IPv4 address family only.
3142 ipv6 -- use IPv6 address family only.
3144 :local ADDRESS -- ADDRESS is the local address used for the connection.
3145 This parameter is ignored when opening a client process. When specified
3146 for a server process, the FAMILY, HOST and SERVICE args are ignored.
3148 :remote ADDRESS -- ADDRESS is the remote partner's address for the
3149 connection. This parameter is ignored when opening a stream server
3150 process. For a datagram server process, it specifies the initial
3151 setting of the remote datagram address. When specified for a client
3152 process, the FAMILY, HOST, and SERVICE args are ignored.
3154 The format of ADDRESS depends on the address family:
3155 - An IPv4 address is represented as an vector of integers [A B C D P]
3156 corresponding to numeric IP address A.B.C.D and port number P.
3157 - A local address is represented as a string with the address in the
3158 local address space.
3159 - An "unsupported family" address is represented by a cons (F . AV)
3160 where F is the family number and AV is a vector containing the socket
3161 address data with one element per address data byte. Do not rely on
3162 this format in portable code, as it may depend on implementation
3163 defined constants, data sizes, and data structure alignment.
3165 :coding CODING -- If CODING is a symbol, it specifies the coding
3166 system used for both reading and writing for this process. If CODING
3167 is a cons (DECODING . ENCODING), DECODING is used for reading, and
3168 ENCODING is used for writing.
3170 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
3171 return without waiting for the connection to complete; instead, the
3172 sentinel function will be called with second arg matching "open" (if
3173 successful) or "failed" when the connect completes. Default is to use
3174 a blocking connect (i.e. wait) for stream type connections.
3176 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
3177 running when Emacs is exited.
3179 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
3180 In the stopped state, a server process does not accept new
3181 connections, and a client process does not handle incoming traffic.
3182 The stopped state is cleared by `continue-process' and set by
3185 :filter FILTER -- Install FILTER as the process filter.
3187 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
3188 process filter are multibyte, otherwise they are unibyte.
3189 If this keyword is not specified, the strings are multibyte if
3190 `default-enable-multibyte-characters' is non-nil.
3192 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
3194 :log LOG -- Install LOG as the server process log function. This
3195 function is called when the server accepts a network connection from a
3196 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
3197 is the server process, CLIENT is the new process for the connection,
3198 and MESSAGE is a string.
3200 :plist PLIST -- Install PLIST as the new process' initial plist.
3202 :server QLEN -- if QLEN is non-nil, create a server process for the
3203 specified FAMILY, SERVICE, and connection type (stream or datagram).
3204 If QLEN is an integer, it is used as the max. length of the server's
3205 pending connection queue (also known as the backlog); the default
3206 queue length is 5. Default is to create a client process.
3208 The following network options can be specified for this connection:
3210 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
3211 :dontroute BOOL -- Only send to directly connected hosts.
3212 :keepalive BOOL -- Send keep-alive messages on network stream.
3213 :linger BOOL or TIMEOUT -- Send queued messages before closing.
3214 :oobinline BOOL -- Place out-of-band data in receive data stream.
3215 :priority INT -- Set protocol defined priority for sent packets.
3216 :reuseaddr BOOL -- Allow reusing a recently used local address
3217 (this is allowed by default for a server process).
3218 :bindtodevice NAME -- bind to interface NAME. Using this may require
3219 special privileges on some systems.
3221 Consult the relevant system programmer's manual pages for more
3222 information on using these options.
3225 A server process will listen for and accept connections from clients.
3226 When a client connection is accepted, a new network process is created
3227 for the connection with the following parameters:
3229 - The client's process name is constructed by concatenating the server
3230 process' NAME and a client identification string.
3231 - If the FILTER argument is non-nil, the client process will not get a
3232 separate process buffer; otherwise, the client's process buffer is a newly
3233 created buffer named after the server process' BUFFER name or process
3234 NAME concatenated with the client identification string.
3235 - The connection type and the process filter and sentinel parameters are
3236 inherited from the server process' TYPE, FILTER and SENTINEL.
3237 - The client process' contact info is set according to the client's
3238 addressing information (typically an IP address and a port number).
3239 - The client process' plist is initialized from the server's plist.
3241 Notice that the FILTER and SENTINEL args are never used directly by
3242 the server process. Also, the BUFFER argument is not used directly by
3243 the server process, but via the optional :log function, accepted (and
3244 failed) connections may be logged in the server process' buffer.
3246 The original argument list, modified with the actual connection
3247 information, is available via the `process-contact' function.
3249 usage: (make-network-process &rest ARGS) */)
3255 Lisp_Object contact
;
3256 struct Lisp_Process
*p
;
3257 #ifdef HAVE_GETADDRINFO
3258 struct addrinfo ai
, *res
, *lres
;
3259 struct addrinfo hints
;
3260 char *portstring
, portbuf
[128];
3261 #else /* HAVE_GETADDRINFO */
3262 struct _emacs_addrinfo
3268 struct sockaddr
*ai_addr
;
3269 struct _emacs_addrinfo
*ai_next
;
3271 #endif /* HAVE_GETADDRINFO */
3272 struct sockaddr_in address_in
;
3273 #ifdef HAVE_LOCAL_SOCKETS
3274 struct sockaddr_un address_un
;
3279 int s
= -1, outch
, inch
;
3280 struct gcpro gcpro1
;
3281 int count
= SPECPDL_INDEX ();
3283 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
3285 Lisp_Object name
, buffer
, host
, service
, address
;
3286 Lisp_Object filter
, sentinel
;
3287 int is_non_blocking_client
= 0;
3288 int is_server
= 0, backlog
= 5;
3295 /* Save arguments for process-contact and clone-process. */
3296 contact
= Flist (nargs
, args
);
3300 /* Ensure socket support is loaded if available. */
3301 init_winsock (TRUE
);
3304 /* :type TYPE (nil: stream, datagram */
3305 tem
= Fplist_get (contact
, QCtype
);
3307 socktype
= SOCK_STREAM
;
3308 #ifdef DATAGRAM_SOCKETS
3309 else if (EQ (tem
, Qdatagram
))
3310 socktype
= SOCK_DGRAM
;
3312 #ifdef HAVE_SEQPACKET
3313 else if (EQ (tem
, Qseqpacket
))
3314 socktype
= SOCK_SEQPACKET
;
3317 error ("Unsupported connection type");
3320 tem
= Fplist_get (contact
, QCserver
);
3323 /* Don't support network sockets when non-blocking mode is
3324 not available, since a blocked Emacs is not useful. */
3325 #if !defined(O_NONBLOCK) && !defined(O_NDELAY)
3326 error ("Network servers not supported");
3330 backlog
= XINT (tem
);
3334 /* Make QCaddress an alias for :local (server) or :remote (client). */
3335 QCaddress
= is_server
? QClocal
: QCremote
;
3338 if (!is_server
&& socktype
!= SOCK_DGRAM
3339 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
3341 #ifndef NON_BLOCKING_CONNECT
3342 error ("Non-blocking connect not supported");
3344 is_non_blocking_client
= 1;
3348 name
= Fplist_get (contact
, QCname
);
3349 buffer
= Fplist_get (contact
, QCbuffer
);
3350 filter
= Fplist_get (contact
, QCfilter
);
3351 sentinel
= Fplist_get (contact
, QCsentinel
);
3353 CHECK_STRING (name
);
3355 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
3356 ai
.ai_socktype
= socktype
;
3361 /* :local ADDRESS or :remote ADDRESS */
3362 address
= Fplist_get (contact
, QCaddress
);
3363 if (!NILP (address
))
3365 host
= service
= Qnil
;
3367 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
3368 error ("Malformed :address");
3369 ai
.ai_family
= family
;
3370 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
3371 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3375 /* :family FAMILY -- nil (for Inet), local, or integer. */
3376 tem
= Fplist_get (contact
, QCfamily
);
3379 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3385 #ifdef HAVE_LOCAL_SOCKETS
3386 else if (EQ (tem
, Qlocal
))
3390 else if (EQ (tem
, Qipv6
))
3393 else if (EQ (tem
, Qipv4
))
3395 else if (INTEGERP (tem
))
3396 family
= XINT (tem
);
3398 error ("Unknown address family");
3400 ai
.ai_family
= family
;
3402 /* :service SERVICE -- string, integer (port number), or t (random port). */
3403 service
= Fplist_get (contact
, QCservice
);
3405 #ifdef HAVE_LOCAL_SOCKETS
3406 if (family
== AF_LOCAL
)
3408 /* Host is not used. */
3410 CHECK_STRING (service
);
3411 bzero (&address_un
, sizeof address_un
);
3412 address_un
.sun_family
= AF_LOCAL
;
3413 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3414 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3415 ai
.ai_addrlen
= sizeof address_un
;
3420 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3421 host
= Fplist_get (contact
, QChost
);
3424 if (EQ (host
, Qlocal
))
3425 host
= build_string ("localhost");
3426 CHECK_STRING (host
);
3429 /* Slow down polling to every ten seconds.
3430 Some kernels have a bug which causes retrying connect to fail
3431 after a connect. Polling can interfere with gethostbyname too. */
3432 #ifdef POLL_FOR_INPUT
3433 if (socktype
!= SOCK_DGRAM
)
3435 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3436 bind_polling_period (10);
3440 #ifdef HAVE_GETADDRINFO
3441 /* If we have a host, use getaddrinfo to resolve both host and service.
3442 Otherwise, use getservbyname to lookup the service. */
3446 /* SERVICE can either be a string or int.
3447 Convert to a C string for later use by getaddrinfo. */
3448 if (EQ (service
, Qt
))
3450 else if (INTEGERP (service
))
3452 sprintf (portbuf
, "%ld", (long) XINT (service
));
3453 portstring
= portbuf
;
3457 CHECK_STRING (service
);
3458 portstring
= SDATA (service
);
3463 memset (&hints
, 0, sizeof (hints
));
3465 hints
.ai_family
= family
;
3466 hints
.ai_socktype
= socktype
;
3467 hints
.ai_protocol
= 0;
3469 #ifdef HAVE_RES_INIT
3473 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3475 #ifdef HAVE_GAI_STRERROR
3476 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3478 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3484 #endif /* HAVE_GETADDRINFO */
3486 /* We end up here if getaddrinfo is not defined, or in case no hostname
3487 has been specified (e.g. for a local server process). */
3489 if (EQ (service
, Qt
))
3491 else if (INTEGERP (service
))
3492 port
= htons ((unsigned short) XINT (service
));
3495 struct servent
*svc_info
;
3496 CHECK_STRING (service
);
3497 svc_info
= getservbyname (SDATA (service
),
3498 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3500 error ("Unknown service: %s", SDATA (service
));
3501 port
= svc_info
->s_port
;
3504 bzero (&address_in
, sizeof address_in
);
3505 address_in
.sin_family
= family
;
3506 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3507 address_in
.sin_port
= port
;
3509 #ifndef HAVE_GETADDRINFO
3512 struct hostent
*host_info_ptr
;
3514 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3515 as it may `hang' Emacs for a very long time. */
3519 #ifdef HAVE_RES_INIT
3523 host_info_ptr
= gethostbyname (SDATA (host
));
3528 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3529 host_info_ptr
->h_length
);
3530 family
= host_info_ptr
->h_addrtype
;
3531 address_in
.sin_family
= family
;
3534 /* Attempt to interpret host as numeric inet address */
3536 unsigned long numeric_addr
;
3537 numeric_addr
= inet_addr ((char *) SDATA (host
));
3538 if (numeric_addr
== -1)
3539 error ("Unknown host \"%s\"", SDATA (host
));
3541 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3542 sizeof (address_in
.sin_addr
));
3546 #endif /* not HAVE_GETADDRINFO */
3548 ai
.ai_family
= family
;
3549 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3550 ai
.ai_addrlen
= sizeof address_in
;
3554 /* Do this in case we never enter the for-loop below. */
3555 count1
= SPECPDL_INDEX ();
3558 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3564 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3571 #ifdef DATAGRAM_SOCKETS
3572 if (!is_server
&& socktype
== SOCK_DGRAM
)
3574 #endif /* DATAGRAM_SOCKETS */
3576 #ifdef NON_BLOCKING_CONNECT
3577 if (is_non_blocking_client
)
3580 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3582 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3594 /* Make us close S if quit. */
3595 record_unwind_protect (close_file_unwind
, make_number (s
));
3597 /* Parse network options in the arg list.
3598 We simply ignore anything which isn't a known option (including other keywords).
3599 An error is signaled if setting a known option fails. */
3600 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3601 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3605 /* Configure as a server socket. */
3607 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3608 explicit :reuseaddr key to override this. */
3609 #ifdef HAVE_LOCAL_SOCKETS
3610 if (family
!= AF_LOCAL
)
3612 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3615 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3616 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3619 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3620 report_file_error ("Cannot bind server socket", Qnil
);
3622 #ifdef HAVE_GETSOCKNAME
3623 if (EQ (service
, Qt
))
3625 struct sockaddr_in sa1
;
3626 int len1
= sizeof (sa1
);
3627 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3629 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3630 service
= make_number (ntohs (sa1
.sin_port
));
3631 contact
= Fplist_put (contact
, QCservice
, service
);
3636 if (socktype
!= SOCK_DGRAM
&& listen (s
, backlog
))
3637 report_file_error ("Cannot listen on server socket", Qnil
);
3645 /* This turns off all alarm-based interrupts; the
3646 bind_polling_period call above doesn't always turn all the
3647 short-interval ones off, especially if interrupt_input is
3650 It'd be nice to be able to control the connect timeout
3651 though. Would non-blocking connect calls be portable?
3653 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3655 turn_on_atimers (0);
3657 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3660 turn_on_atimers (1);
3662 if (ret
== 0 || xerrno
== EISCONN
)
3664 /* The unwind-protect will be discarded afterwards.
3665 Likewise for immediate_quit. */
3669 #ifdef NON_BLOCKING_CONNECT
3671 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3675 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3683 /* Discard the unwind protect closing S. */
3684 specpdl_ptr
= specpdl
+ count1
;
3688 if (xerrno
== EINTR
)
3694 #ifdef DATAGRAM_SOCKETS
3695 if (socktype
== SOCK_DGRAM
)
3697 if (datagram_address
[s
].sa
)
3699 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3700 datagram_address
[s
].len
= lres
->ai_addrlen
;
3704 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3705 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3708 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3709 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3710 conv_lisp_to_sockaddr (rfamily
, remote
,
3711 datagram_address
[s
].sa
, rlen
);
3715 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3718 contact
= Fplist_put (contact
, QCaddress
,
3719 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3720 #ifdef HAVE_GETSOCKNAME
3723 struct sockaddr_in sa1
;
3724 int len1
= sizeof (sa1
);
3725 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3726 contact
= Fplist_put (contact
, QClocal
,
3727 conv_sockaddr_to_lisp (&sa1
, len1
));
3734 #ifdef HAVE_GETADDRINFO
3743 /* Discard the unwind protect for closing S, if any. */
3744 specpdl_ptr
= specpdl
+ count1
;
3746 /* Unwind bind_polling_period and request_sigio. */
3747 unbind_to (count
, Qnil
);
3751 /* If non-blocking got this far - and failed - assume non-blocking is
3752 not supported after all. This is probably a wrong assumption, but
3753 the normal blocking calls to open-network-stream handles this error
3755 if (is_non_blocking_client
)
3760 report_file_error ("make server process failed", contact
);
3762 report_file_error ("make client process failed", contact
);
3769 buffer
= Fget_buffer_create (buffer
);
3770 proc
= make_process (name
);
3772 chan_process
[inch
] = proc
;
3775 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3778 fcntl (inch
, F_SETFL
, O_NDELAY
);
3782 p
= XPROCESS (proc
);
3784 p
->childp
= contact
;
3785 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3789 p
->sentinel
= sentinel
;
3791 p
->log
= Fplist_get (contact
, QClog
);
3792 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3793 p
->kill_without_query
= 1;
3794 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3799 if (is_server
&& socktype
!= SOCK_DGRAM
)
3800 p
->status
= Qlisten
;
3802 /* Make the process marker point into the process buffer (if any). */
3803 if (BUFFERP (buffer
))
3804 set_marker_both (p
->mark
, buffer
,
3805 BUF_ZV (XBUFFER (buffer
)),
3806 BUF_ZV_BYTE (XBUFFER (buffer
)));
3808 #ifdef NON_BLOCKING_CONNECT
3809 if (is_non_blocking_client
)
3811 /* We may get here if connect did succeed immediately. However,
3812 in that case, we still need to signal this like a non-blocking
3814 p
->status
= Qconnect
;
3815 if (!FD_ISSET (inch
, &connect_wait_mask
))
3817 FD_SET (inch
, &connect_wait_mask
);
3818 num_pending_connects
++;
3823 /* A server may have a client filter setting of Qt, but it must
3824 still listen for incoming connects unless it is stopped. */
3825 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3826 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3828 FD_SET (inch
, &input_wait_mask
);
3829 FD_SET (inch
, &non_keyboard_wait_mask
);
3832 if (inch
> max_process_desc
)
3833 max_process_desc
= inch
;
3835 tem
= Fplist_member (contact
, QCcoding
);
3836 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3837 tem
= Qnil
; /* No error message (too late!). */
3840 /* Setup coding systems for communicating with the network stream. */
3841 struct gcpro gcpro1
;
3842 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3843 Lisp_Object coding_systems
= Qt
;
3844 Lisp_Object args
[5], val
;
3848 val
= XCAR (XCDR (tem
));
3852 else if (!NILP (Vcoding_system_for_read
))
3853 val
= Vcoding_system_for_read
;
3854 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3855 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3856 /* We dare not decode end-of-line format by setting VAL to
3857 Qraw_text, because the existing Emacs Lisp libraries
3858 assume that they receive bare code including a sequene of
3863 if (NILP (host
) || NILP (service
))
3864 coding_systems
= Qnil
;
3867 args
[0] = Qopen_network_stream
, args
[1] = name
,
3868 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3870 coding_systems
= Ffind_operation_coding_system (5, args
);
3873 if (CONSP (coding_systems
))
3874 val
= XCAR (coding_systems
);
3875 else if (CONSP (Vdefault_process_coding_system
))
3876 val
= XCAR (Vdefault_process_coding_system
);
3880 p
->decode_coding_system
= val
;
3884 val
= XCAR (XCDR (tem
));
3888 else if (!NILP (Vcoding_system_for_write
))
3889 val
= Vcoding_system_for_write
;
3890 else if (NILP (current_buffer
->enable_multibyte_characters
))
3894 if (EQ (coding_systems
, Qt
))
3896 if (NILP (host
) || NILP (service
))
3897 coding_systems
= Qnil
;
3900 args
[0] = Qopen_network_stream
, args
[1] = name
,
3901 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3903 coding_systems
= Ffind_operation_coding_system (5, args
);
3907 if (CONSP (coding_systems
))
3908 val
= XCDR (coding_systems
);
3909 else if (CONSP (Vdefault_process_coding_system
))
3910 val
= XCDR (Vdefault_process_coding_system
);
3914 p
->encode_coding_system
= val
;
3916 setup_process_coding_systems (proc
);
3918 p
->decoding_buf
= make_uninit_string (0);
3919 p
->decoding_carryover
= 0;
3920 p
->encoding_buf
= make_uninit_string (0);
3922 p
->inherit_coding_system_flag
3923 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3928 #endif /* HAVE_SOCKETS */
3931 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3934 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3935 doc
: /* Return an alist of all network interfaces and their network address.
3936 Each element is a cons, the car of which is a string containing the
3937 interface name, and the cdr is the network address in internal
3938 format; see the description of ADDRESS in `make-network-process'. */)
3941 struct ifconf ifconf
;
3942 struct ifreq
*ifreqs
= NULL
;
3947 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3953 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3954 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3961 ifconf
.ifc_len
= buf_size
;
3962 ifconf
.ifc_req
= ifreqs
;
3963 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3969 if (ifconf
.ifc_len
== buf_size
)
3973 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3976 while (--ifaces
>= 0)
3978 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3979 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3980 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3982 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3983 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3984 res
= Fcons (Fcons (build_string (namebuf
),
3985 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3986 sizeof (struct sockaddr
))),
3992 #endif /* SIOCGIFCONF */
3994 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3998 const char *flag_sym
;
4001 static const struct ifflag_def ifflag_table
[] = {
4005 #ifdef IFF_BROADCAST
4006 { IFF_BROADCAST
, "broadcast" },
4009 { IFF_DEBUG
, "debug" },
4012 { IFF_LOOPBACK
, "loopback" },
4014 #ifdef IFF_POINTOPOINT
4015 { IFF_POINTOPOINT
, "pointopoint" },
4018 { IFF_RUNNING
, "running" },
4021 { IFF_NOARP
, "noarp" },
4024 { IFF_PROMISC
, "promisc" },
4026 #ifdef IFF_NOTRAILERS
4027 { IFF_NOTRAILERS
, "notrailers" },
4030 { IFF_ALLMULTI
, "allmulti" },
4033 { IFF_MASTER
, "master" },
4036 { IFF_SLAVE
, "slave" },
4038 #ifdef IFF_MULTICAST
4039 { IFF_MULTICAST
, "multicast" },
4042 { IFF_PORTSEL
, "portsel" },
4044 #ifdef IFF_AUTOMEDIA
4045 { IFF_AUTOMEDIA
, "automedia" },
4048 { IFF_DYNAMIC
, "dynamic" },
4051 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
4054 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
4057 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
4060 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
4063 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
4068 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
4069 doc
: /* Return information about network interface named IFNAME.
4070 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
4071 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
4072 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
4073 FLAGS is the current flags of the interface. */)
4078 Lisp_Object res
= Qnil
;
4083 CHECK_STRING (ifname
);
4085 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
4086 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
4088 s
= socket (AF_INET
, SOCK_STREAM
, 0);
4093 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
4094 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
4096 int flags
= rq
.ifr_flags
;
4097 const struct ifflag_def
*fp
;
4101 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
4103 if (flags
& fp
->flag_bit
)
4105 elt
= Fcons (intern (fp
->flag_sym
), elt
);
4106 flags
-= fp
->flag_bit
;
4109 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
4111 if (flags
& (1 << fnum
))
4113 elt
= Fcons (make_number (fnum
), elt
);
4118 res
= Fcons (elt
, res
);
4121 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
4122 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
4124 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
4125 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
4129 for (n
= 0; n
< 6; n
++)
4130 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
4131 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
4134 res
= Fcons (elt
, res
);
4137 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
4138 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
4141 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
4142 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
4144 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4148 res
= Fcons (elt
, res
);
4151 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
4152 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
4155 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
4158 res
= Fcons (elt
, res
);
4161 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
4162 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
4165 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
4168 res
= Fcons (elt
, res
);
4172 return any
? res
: Qnil
;
4175 #endif /* HAVE_SOCKETS */
4177 /* Turn off input and output for process PROC. */
4180 deactivate_process (proc
)
4183 register int inchannel
, outchannel
;
4184 register struct Lisp_Process
*p
= XPROCESS (proc
);
4186 inchannel
= p
->infd
;
4187 outchannel
= p
->outfd
;
4189 #ifdef ADAPTIVE_READ_BUFFERING
4190 if (p
->read_output_delay
> 0)
4192 if (--process_output_delay_count
< 0)
4193 process_output_delay_count
= 0;
4194 p
->read_output_delay
= 0;
4195 p
->read_output_skip
= 0;
4201 /* Beware SIGCHLD hereabouts. */
4202 flush_pending_output (inchannel
);
4203 emacs_close (inchannel
);
4204 if (outchannel
>= 0 && outchannel
!= inchannel
)
4205 emacs_close (outchannel
);
4209 #ifdef DATAGRAM_SOCKETS
4210 if (DATAGRAM_CHAN_P (inchannel
))
4212 xfree (datagram_address
[inchannel
].sa
);
4213 datagram_address
[inchannel
].sa
= 0;
4214 datagram_address
[inchannel
].len
= 0;
4217 chan_process
[inchannel
] = Qnil
;
4218 FD_CLR (inchannel
, &input_wait_mask
);
4219 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
4220 #ifdef NON_BLOCKING_CONNECT
4221 if (FD_ISSET (inchannel
, &connect_wait_mask
))
4223 FD_CLR (inchannel
, &connect_wait_mask
);
4224 if (--num_pending_connects
< 0)
4228 if (inchannel
== max_process_desc
)
4231 /* We just closed the highest-numbered process input descriptor,
4232 so recompute the highest-numbered one now. */
4233 max_process_desc
= 0;
4234 for (i
= 0; i
< MAXDESC
; i
++)
4235 if (!NILP (chan_process
[i
]))
4236 max_process_desc
= i
;
4241 /* Close all descriptors currently in use for communication
4242 with subprocess. This is used in a newly-forked subprocess
4243 to get rid of irrelevant descriptors. */
4246 close_process_descs ()
4250 for (i
= 0; i
< MAXDESC
; i
++)
4252 Lisp_Object process
;
4253 process
= chan_process
[i
];
4254 if (!NILP (process
))
4256 int in
= XPROCESS (process
)->infd
;
4257 int out
= XPROCESS (process
)->outfd
;
4260 if (out
>= 0 && in
!= out
)
4267 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
4269 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
4270 It is read into the process' buffers or given to their filter functions.
4271 Non-nil arg PROCESS means do not return until some output has been received
4274 Non-nil second arg SECONDS and third arg MILLISEC are number of seconds
4275 and milliseconds to wait; return after that much time whether or not
4276 there is any subprocess output. If SECONDS is a floating point number,
4277 it specifies a fractional number of seconds to wait.
4278 The MILLISEC argument is obsolete and should be avoided.
4280 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
4281 from PROCESS, suspending reading output from other processes.
4282 If JUST-THIS-ONE is an integer, don't run any timers either.
4283 Return non-nil if we received any output before the timeout expired. */)
4284 (process
, seconds
, millisec
, just_this_one
)
4285 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
4287 int secs
, usecs
= 0;
4289 if (! NILP (process
))
4290 CHECK_PROCESS (process
);
4292 just_this_one
= Qnil
;
4294 if (!NILP (millisec
))
4295 { /* Obsolete calling convention using integers rather than floats. */
4296 CHECK_NUMBER (millisec
);
4298 seconds
= make_float (XINT (millisec
) / 1000.0);
4301 CHECK_NUMBER (seconds
);
4302 seconds
= make_float (XINT (millisec
) / 1000.0 + XINT (seconds
));
4306 if (!NILP (seconds
))
4308 if (INTEGERP (seconds
))
4309 secs
= XINT (seconds
);
4310 else if (FLOATP (seconds
))
4312 double timeout
= XFLOAT_DATA (seconds
);
4313 secs
= (int) timeout
;
4314 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
4317 wrong_type_argument (Qnumberp
, seconds
);
4319 if (secs
< 0 || (secs
== 0 && usecs
== 0))
4320 secs
= -1, usecs
= 0;
4323 secs
= NILP (process
) ? -1 : 0;
4326 (wait_reading_process_output (secs
, usecs
, 0, 0,
4328 !NILP (process
) ? XPROCESS (process
) : NULL
,
4329 NILP (just_this_one
) ? 0 :
4330 !INTEGERP (just_this_one
) ? 1 : -1)
4334 /* Accept a connection for server process SERVER on CHANNEL. */
4336 static int connect_counter
= 0;
4339 server_accept_connection (server
, channel
)
4343 Lisp_Object proc
, caller
, name
, buffer
;
4344 Lisp_Object contact
, host
, service
;
4345 struct Lisp_Process
*ps
= XPROCESS (server
);
4346 struct Lisp_Process
*p
;
4350 struct sockaddr_in in
;
4352 struct sockaddr_in6 in6
;
4354 #ifdef HAVE_LOCAL_SOCKETS
4355 struct sockaddr_un un
;
4358 int len
= sizeof saddr
;
4360 s
= accept (channel
, &saddr
.sa
, &len
);
4369 if (code
== EWOULDBLOCK
)
4373 if (!NILP (ps
->log
))
4374 call3 (ps
->log
, server
, Qnil
,
4375 concat3 (build_string ("accept failed with code"),
4376 Fnumber_to_string (make_number (code
)),
4377 build_string ("\n")));
4383 /* Setup a new process to handle the connection. */
4385 /* Generate a unique identification of the caller, and build contact
4386 information for this process. */
4389 switch (saddr
.sa
.sa_family
)
4393 Lisp_Object args
[5];
4394 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4395 args
[0] = build_string ("%d.%d.%d.%d");
4396 args
[1] = make_number (*ip
++);
4397 args
[2] = make_number (*ip
++);
4398 args
[3] = make_number (*ip
++);
4399 args
[4] = make_number (*ip
++);
4400 host
= Fformat (5, args
);
4401 service
= make_number (ntohs (saddr
.in
.sin_port
));
4403 args
[0] = build_string (" <%s:%d>");
4406 caller
= Fformat (3, args
);
4413 Lisp_Object args
[9];
4414 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4416 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4417 for (i
= 0; i
< 8; i
++)
4418 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4419 host
= Fformat (9, args
);
4420 service
= make_number (ntohs (saddr
.in
.sin_port
));
4422 args
[0] = build_string (" <[%s]:%d>");
4425 caller
= Fformat (3, args
);
4430 #ifdef HAVE_LOCAL_SOCKETS
4434 caller
= Fnumber_to_string (make_number (connect_counter
));
4435 caller
= concat3 (build_string (" <"), caller
, build_string (">"));
4439 /* Create a new buffer name for this process if it doesn't have a
4440 filter. The new buffer name is based on the buffer name or
4441 process name of the server process concatenated with the caller
4444 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4448 buffer
= ps
->buffer
;
4450 buffer
= Fbuffer_name (buffer
);
4455 buffer
= concat2 (buffer
, caller
);
4456 buffer
= Fget_buffer_create (buffer
);
4460 /* Generate a unique name for the new server process. Combine the
4461 server process name with the caller identification. */
4463 name
= concat2 (ps
->name
, caller
);
4464 proc
= make_process (name
);
4466 chan_process
[s
] = proc
;
4469 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4472 fcntl (s
, F_SETFL
, O_NDELAY
);
4476 p
= XPROCESS (proc
);
4478 /* Build new contact information for this setup. */
4479 contact
= Fcopy_sequence (ps
->childp
);
4480 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4481 contact
= Fplist_put (contact
, QChost
, host
);
4482 if (!NILP (service
))
4483 contact
= Fplist_put (contact
, QCservice
, service
);
4484 contact
= Fplist_put (contact
, QCremote
,
4485 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4486 #ifdef HAVE_GETSOCKNAME
4488 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4489 contact
= Fplist_put (contact
, QClocal
,
4490 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4493 p
->childp
= contact
;
4494 p
->plist
= Fcopy_sequence (ps
->plist
);
4498 p
->sentinel
= ps
->sentinel
;
4499 p
->filter
= ps
->filter
;
4506 /* Client processes for accepted connections are not stopped initially. */
4507 if (!EQ (p
->filter
, Qt
))
4509 FD_SET (s
, &input_wait_mask
);
4510 FD_SET (s
, &non_keyboard_wait_mask
);
4513 if (s
> max_process_desc
)
4514 max_process_desc
= s
;
4516 /* Setup coding system for new process based on server process.
4517 This seems to be the proper thing to do, as the coding system
4518 of the new process should reflect the settings at the time the
4519 server socket was opened; not the current settings. */
4521 p
->decode_coding_system
= ps
->decode_coding_system
;
4522 p
->encode_coding_system
= ps
->encode_coding_system
;
4523 setup_process_coding_systems (proc
);
4525 p
->decoding_buf
= make_uninit_string (0);
4526 p
->decoding_carryover
= 0;
4527 p
->encoding_buf
= make_uninit_string (0);
4529 p
->inherit_coding_system_flag
4530 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4532 if (!NILP (ps
->log
))
4533 call3 (ps
->log
, server
, proc
,
4534 concat3 (build_string ("accept from "),
4535 (STRINGP (host
) ? host
: build_string ("-")),
4536 build_string ("\n")));
4538 if (!NILP (p
->sentinel
))
4539 exec_sentinel (proc
,
4540 concat3 (build_string ("open from "),
4541 (STRINGP (host
) ? host
: build_string ("-")),
4542 build_string ("\n")));
4545 /* This variable is different from waiting_for_input in keyboard.c.
4546 It is used to communicate to a lisp process-filter/sentinel (via the
4547 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4548 for user-input when that process-filter was called.
4549 waiting_for_input cannot be used as that is by definition 0 when
4550 lisp code is being evalled.
4551 This is also used in record_asynch_buffer_change.
4552 For that purpose, this must be 0
4553 when not inside wait_reading_process_output. */
4554 static int waiting_for_user_input_p
;
4557 wait_reading_process_output_unwind (data
)
4560 waiting_for_user_input_p
= XINT (data
);
4564 /* This is here so breakpoints can be put on it. */
4566 wait_reading_process_output_1 ()
4570 /* Use a wrapper around select to work around a bug in gdb 5.3.
4571 Normally, the wrapper is optimized away by inlining.
4573 If emacs is stopped inside select, the gdb backtrace doesn't
4574 show the function which called select, so it is practically
4575 impossible to step through wait_reading_process_output. */
4579 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4581 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4584 return select (n
, rfd
, wfd
, xfd
, tmo
);
4586 #define select select_wrapper
4589 /* Read and dispose of subprocess output while waiting for timeout to
4590 elapse and/or keyboard input to be available.
4593 timeout in seconds, or
4594 zero for no limit, or
4595 -1 means gobble data immediately available but don't wait for any.
4598 an additional duration to wait, measured in microseconds.
4599 If this is nonzero and time_limit is 0, then the timeout
4600 consists of MICROSECS only.
4602 READ_KBD is a lisp value:
4603 0 to ignore keyboard input, or
4604 1 to return when input is available, or
4605 -1 meaning caller will actually read the input, so don't throw to
4606 the quit handler, or
4608 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4609 output that arrives.
4611 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4612 (and gobble terminal input into the buffer if any arrives).
4614 If WAIT_PROC is specified, wait until something arrives from that
4615 process. The return value is true if we read some input from
4618 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4619 (suspending output from other processes). A negative value
4620 means don't run any timers either.
4622 If WAIT_PROC is specified, then the function returns true if we
4623 received input from that process before the timeout elapsed.
4624 Otherwise, return true if we received input from any process. */
4627 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4628 wait_for_cell
, wait_proc
, just_wait_proc
)
4629 int time_limit
, microsecs
, read_kbd
, do_display
;
4630 Lisp_Object wait_for_cell
;
4631 struct Lisp_Process
*wait_proc
;
4634 register int channel
, nfds
;
4635 SELECT_TYPE Available
;
4636 #ifdef NON_BLOCKING_CONNECT
4637 SELECT_TYPE Connecting
;
4640 int check_delay
, no_avail
;
4643 EMACS_TIME timeout
, end_time
;
4644 int wait_channel
= -1;
4645 int got_some_input
= 0;
4646 int count
= SPECPDL_INDEX ();
4648 FD_ZERO (&Available
);
4649 #ifdef NON_BLOCKING_CONNECT
4650 FD_ZERO (&Connecting
);
4653 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4654 if (wait_proc
!= NULL
)
4655 wait_channel
= wait_proc
->infd
;
4657 record_unwind_protect (wait_reading_process_output_unwind
,
4658 make_number (waiting_for_user_input_p
));
4659 waiting_for_user_input_p
= read_kbd
;
4661 /* Since we may need to wait several times,
4662 compute the absolute time to return at. */
4663 if (time_limit
|| microsecs
)
4665 EMACS_GET_TIME (end_time
);
4666 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4667 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4672 int timeout_reduced_for_timers
= 0;
4674 /* If calling from keyboard input, do not quit
4675 since we want to return C-g as an input character.
4676 Otherwise, do pending quit if requested. */
4681 process_pending_signals ();
4684 /* Exit now if the cell we're waiting for became non-nil. */
4685 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4688 /* Compute time from now till when time limit is up */
4689 /* Exit if already run out */
4690 if (time_limit
== -1)
4692 /* -1 specified for timeout means
4693 gobble output available now
4694 but don't wait at all. */
4696 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4698 else if (time_limit
|| microsecs
)
4700 EMACS_GET_TIME (timeout
);
4701 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4702 if (EMACS_TIME_NEG_P (timeout
))
4707 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4710 /* Normally we run timers here.
4711 But not if wait_for_cell; in those cases,
4712 the wait is supposed to be short,
4713 and those callers cannot handle running arbitrary Lisp code here. */
4714 if (NILP (wait_for_cell
)
4715 && just_wait_proc
>= 0)
4717 EMACS_TIME timer_delay
;
4721 int old_timers_run
= timers_run
;
4722 struct buffer
*old_buffer
= current_buffer
;
4723 Lisp_Object old_window
= selected_window
;
4725 timer_delay
= timer_check (1);
4727 /* If a timer has run, this might have changed buffers
4728 an alike. Make read_key_sequence aware of that. */
4729 if (timers_run
!= old_timers_run
4730 && (old_buffer
!= current_buffer
4731 || !EQ (old_window
, selected_window
))
4732 && waiting_for_user_input_p
== -1)
4733 record_asynch_buffer_change ();
4735 if (timers_run
!= old_timers_run
&& do_display
)
4736 /* We must retry, since a timer may have requeued itself
4737 and that could alter the time_delay. */
4738 redisplay_preserve_echo_area (9);
4742 while (!detect_input_pending ());
4744 /* If there is unread keyboard input, also return. */
4746 && requeued_events_pending_p ())
4749 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4751 EMACS_TIME difference
;
4752 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4753 if (EMACS_TIME_NEG_P (difference
))
4755 timeout
= timer_delay
;
4756 timeout_reduced_for_timers
= 1;
4759 /* If time_limit is -1, we are not going to wait at all. */
4760 else if (time_limit
!= -1)
4762 /* This is so a breakpoint can be put here. */
4763 wait_reading_process_output_1 ();
4767 /* Cause C-g and alarm signals to take immediate action,
4768 and cause input available signals to zero out timeout.
4770 It is important that we do this before checking for process
4771 activity. If we get a SIGCHLD after the explicit checks for
4772 process activity, timeout is the only way we will know. */
4774 set_waiting_for_input (&timeout
);
4776 /* If status of something has changed, and no input is
4777 available, notify the user of the change right away. After
4778 this explicit check, we'll let the SIGCHLD handler zap
4779 timeout to get our attention. */
4780 if (update_tick
!= process_tick
)
4783 #ifdef NON_BLOCKING_CONNECT
4787 Atemp
= input_wait_mask
;
4788 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4790 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4791 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4794 #ifdef NON_BLOCKING_CONNECT
4795 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4799 (SELECT_TYPE
*)0, &timeout
)
4802 /* It's okay for us to do this and then continue with
4803 the loop, since timeout has already been zeroed out. */
4804 clear_waiting_for_input ();
4805 status_notify (NULL
);
4806 if (do_display
) redisplay_preserve_echo_area (13);
4810 /* Don't wait for output from a non-running process. Just
4811 read whatever data has already been received. */
4812 if (wait_proc
&& wait_proc
->raw_status_new
)
4813 update_status (wait_proc
);
4815 && ! EQ (wait_proc
->status
, Qrun
)
4816 && ! EQ (wait_proc
->status
, Qconnect
))
4818 int nread
, total_nread
= 0;
4820 clear_waiting_for_input ();
4821 XSETPROCESS (proc
, wait_proc
);
4823 /* Read data from the process, until we exhaust it. */
4824 while (wait_proc
->infd
>= 0)
4826 nread
= read_process_output (proc
, wait_proc
->infd
);
4833 total_nread
+= nread
;
4837 else if (nread
== -1 && EIO
== errno
)
4841 else if (nread
== -1 && EAGAIN
== errno
)
4845 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4849 if (total_nread
> 0 && do_display
)
4850 redisplay_preserve_echo_area (10);
4855 /* Wait till there is something to do */
4857 if (wait_proc
&& just_wait_proc
)
4859 if (wait_proc
->infd
< 0) /* Terminated */
4861 FD_SET (wait_proc
->infd
, &Available
);
4863 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4865 else if (!NILP (wait_for_cell
))
4867 Available
= non_process_wait_mask
;
4869 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4874 Available
= non_keyboard_wait_mask
;
4876 Available
= input_wait_mask
;
4877 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4878 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4881 /* If frame size has changed or the window is newly mapped,
4882 redisplay now, before we start to wait. There is a race
4883 condition here; if a SIGIO arrives between now and the select
4884 and indicates that a frame is trashed, the select may block
4885 displaying a trashed screen. */
4886 if (frame_garbaged
&& do_display
)
4888 clear_waiting_for_input ();
4889 redisplay_preserve_echo_area (11);
4891 set_waiting_for_input (&timeout
);
4895 if (read_kbd
&& detect_input_pending ())
4902 #ifdef NON_BLOCKING_CONNECT
4904 Connecting
= connect_wait_mask
;
4907 #ifdef ADAPTIVE_READ_BUFFERING
4908 /* Set the timeout for adaptive read buffering if any
4909 process has non-zero read_output_skip and non-zero
4910 read_output_delay, and we are not reading output for a
4911 specific wait_channel. It is not executed if
4912 Vprocess_adaptive_read_buffering is nil. */
4913 if (process_output_skip
&& check_delay
> 0)
4915 int usecs
= EMACS_USECS (timeout
);
4916 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4917 usecs
= READ_OUTPUT_DELAY_MAX
;
4918 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4920 proc
= chan_process
[channel
];
4923 /* Find minimum non-zero read_output_delay among the
4924 processes with non-zero read_output_skip. */
4925 if (XPROCESS (proc
)->read_output_delay
> 0)
4928 if (!XPROCESS (proc
)->read_output_skip
)
4930 FD_CLR (channel
, &Available
);
4931 XPROCESS (proc
)->read_output_skip
= 0;
4932 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4933 usecs
= XPROCESS (proc
)->read_output_delay
;
4936 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4937 process_output_skip
= 0;
4940 #if defined (USE_GTK) || defined (HAVE_GCONF)
4942 #elif defined (HAVE_NS)
4947 (max (max (max_process_desc
, max_keyboard_desc
),
4950 #ifdef NON_BLOCKING_CONNECT
4951 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4955 (SELECT_TYPE
*)0, &timeout
);
4960 /* Make C-g and alarm signals set flags again */
4961 clear_waiting_for_input ();
4963 /* If we woke up due to SIGWINCH, actually change size now. */
4964 do_pending_window_change (0);
4966 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4967 /* We wanted the full specified time, so return now. */
4971 if (xerrno
== EINTR
)
4973 else if (xerrno
== EBADF
)
4976 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4977 the child's closure of the pts gives the parent a SIGHUP, and
4978 the ptc file descriptor is automatically closed,
4979 yielding EBADF here or at select() call above.
4980 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4981 in m/ibmrt-aix.h), and here we just ignore the select error.
4982 Cleanup occurs c/o status_notify after SIGCLD. */
4983 no_avail
= 1; /* Cannot depend on values returned */
4989 error ("select error: %s", emacs_strerror (xerrno
));
4994 FD_ZERO (&Available
);
4995 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4998 #if 0 /* When polling is used, interrupt_input is 0,
4999 so get_input_pending should read the input.
5000 So this should not be needed. */
5001 /* If we are using polling for input,
5002 and we see input available, make it get read now.
5003 Otherwise it might not actually get read for a second.
5004 And on hpux, since we turn off polling in wait_reading_process_output,
5005 it might never get read at all if we don't spend much time
5006 outside of wait_reading_process_output. */
5007 if (read_kbd
&& interrupt_input
5008 && keyboard_bit_set (&Available
)
5009 && input_polling_used ())
5010 kill (getpid (), SIGALRM
);
5013 /* Check for keyboard input */
5014 /* If there is any, return immediately
5015 to give it higher priority than subprocesses */
5019 int old_timers_run
= timers_run
;
5020 struct buffer
*old_buffer
= current_buffer
;
5021 Lisp_Object old_window
= selected_window
;
5024 if (detect_input_pending_run_timers (do_display
))
5026 swallow_events (do_display
);
5027 if (detect_input_pending_run_timers (do_display
))
5031 /* If a timer has run, this might have changed buffers
5032 an alike. Make read_key_sequence aware of that. */
5033 if (timers_run
!= old_timers_run
5034 && waiting_for_user_input_p
== -1
5035 && (old_buffer
!= current_buffer
5036 || !EQ (old_window
, selected_window
)))
5037 record_asynch_buffer_change ();
5043 /* If there is unread keyboard input, also return. */
5045 && requeued_events_pending_p ())
5048 /* If we are not checking for keyboard input now,
5049 do process events (but don't run any timers).
5050 This is so that X events will be processed.
5051 Otherwise they may have to wait until polling takes place.
5052 That would causes delays in pasting selections, for example.
5054 (We used to do this only if wait_for_cell.) */
5055 if (read_kbd
== 0 && detect_input_pending ())
5057 swallow_events (do_display
);
5058 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
5059 if (detect_input_pending ())
5064 /* Exit now if the cell we're waiting for became non-nil. */
5065 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
5069 /* If we think we have keyboard input waiting, but didn't get SIGIO,
5070 go read it. This can happen with X on BSD after logging out.
5071 In that case, there really is no input and no SIGIO,
5072 but select says there is input. */
5074 if (read_kbd
&& interrupt_input
5075 && keyboard_bit_set (&Available
) && ! noninteractive
)
5076 kill (getpid (), SIGIO
);
5080 got_some_input
|= nfds
> 0;
5082 /* If checking input just got us a size-change event from X,
5083 obey it now if we should. */
5084 if (read_kbd
|| ! NILP (wait_for_cell
))
5085 do_pending_window_change (0);
5087 /* Check for data from a process. */
5088 if (no_avail
|| nfds
== 0)
5091 /* Really FIRST_PROC_DESC should be 0 on Unix,
5092 but this is safer in the short run. */
5093 for (channel
= 0; channel
<= max_process_desc
; channel
++)
5095 if (FD_ISSET (channel
, &Available
)
5096 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
5100 /* If waiting for this channel, arrange to return as
5101 soon as no more input to be processed. No more
5103 if (wait_channel
== channel
)
5109 proc
= chan_process
[channel
];
5113 /* If this is a server stream socket, accept connection. */
5114 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
5116 server_accept_connection (proc
, channel
);
5120 /* Read data from the process, starting with our
5121 buffered-ahead character if we have one. */
5123 nread
= read_process_output (proc
, channel
);
5126 /* Since read_process_output can run a filter,
5127 which can call accept-process-output,
5128 don't try to read from any other processes
5129 before doing the select again. */
5130 FD_ZERO (&Available
);
5133 redisplay_preserve_echo_area (12);
5136 else if (nread
== -1 && errno
== EWOULDBLOCK
)
5139 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
5140 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
5142 else if (nread
== -1 && errno
== EAGAIN
)
5146 else if (nread
== -1 && errno
== EAGAIN
)
5148 /* Note that we cannot distinguish between no input
5149 available now and a closed pipe.
5150 With luck, a closed pipe will be accompanied by
5151 subprocess termination and SIGCHLD. */
5152 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5154 #endif /* O_NDELAY */
5155 #endif /* O_NONBLOCK */
5157 /* On some OSs with ptys, when the process on one end of
5158 a pty exits, the other end gets an error reading with
5159 errno = EIO instead of getting an EOF (0 bytes read).
5160 Therefore, if we get an error reading and errno =
5161 EIO, just continue, because the child process has
5162 exited and should clean itself up soon (e.g. when we
5165 However, it has been known to happen that the SIGCHLD
5166 got lost. So raise the signal again just in case.
5168 else if (nread
== -1 && errno
== EIO
)
5170 /* Clear the descriptor now, so we only raise the
5171 signal once. Don't do this if `process' is only
5173 if (XPROCESS (proc
)->pid
!= -2)
5175 FD_CLR (channel
, &input_wait_mask
);
5176 FD_CLR (channel
, &non_keyboard_wait_mask
);
5178 kill (getpid (), SIGCHLD
);
5181 #endif /* HAVE_PTYS */
5182 /* If we can detect process termination, don't consider the process
5183 gone just because its pipe is closed. */
5185 else if (nread
== 0 && !NETCONN_P (proc
) && !SERIALCONN_P (proc
))
5190 /* Preserve status of processes already terminated. */
5191 XPROCESS (proc
)->tick
= ++process_tick
;
5192 deactivate_process (proc
);
5193 if (XPROCESS (proc
)->raw_status_new
)
5194 update_status (XPROCESS (proc
));
5195 if (EQ (XPROCESS (proc
)->status
, Qrun
))
5196 XPROCESS (proc
)->status
5197 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5200 #ifdef NON_BLOCKING_CONNECT
5201 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
5202 && FD_ISSET (channel
, &connect_wait_mask
))
5204 struct Lisp_Process
*p
;
5206 FD_CLR (channel
, &connect_wait_mask
);
5207 if (--num_pending_connects
< 0)
5210 proc
= chan_process
[channel
];
5214 p
= XPROCESS (proc
);
5217 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
5218 So only use it on systems where it is known to work. */
5220 int xlen
= sizeof(xerrno
);
5221 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
5226 struct sockaddr pname
;
5227 int pnamelen
= sizeof(pname
);
5229 /* If connection failed, getpeername will fail. */
5231 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
5233 /* Obtain connect failure code through error slippage. */
5236 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
5243 p
->tick
= ++process_tick
;
5244 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
5245 deactivate_process (proc
);
5250 /* Execute the sentinel here. If we had relied on
5251 status_notify to do it later, it will read input
5252 from the process before calling the sentinel. */
5253 exec_sentinel (proc
, build_string ("open\n"));
5254 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
5256 FD_SET (p
->infd
, &input_wait_mask
);
5257 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
5261 #endif /* NON_BLOCKING_CONNECT */
5262 } /* end for each file descriptor */
5263 } /* end while exit conditions not met */
5265 unbind_to (count
, Qnil
);
5267 /* If calling from keyboard input, do not quit
5268 since we want to return C-g as an input character.
5269 Otherwise, do pending quit if requested. */
5272 /* Prevent input_pending from remaining set if we quit. */
5273 clear_input_pending ();
5277 return got_some_input
;
5280 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
5283 read_process_output_call (fun_and_args
)
5284 Lisp_Object fun_and_args
;
5286 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
5290 read_process_output_error_handler (error
)
5293 cmd_error_internal (error
, "error in process filter: ");
5295 update_echo_area ();
5296 Fsleep_for (make_number (2), Qnil
);
5300 /* Read pending output from the process channel,
5301 starting with our buffered-ahead character if we have one.
5302 Yield number of decoded characters read.
5304 This function reads at most 4096 characters.
5305 If you want to read all available subprocess output,
5306 you must call it repeatedly until it returns zero.
5308 The characters read are decoded according to PROC's coding-system
5312 read_process_output (proc
, channel
)
5314 register int channel
;
5316 register int nbytes
;
5318 register Lisp_Object outstream
;
5319 register struct Lisp_Process
*p
= XPROCESS (proc
);
5320 register int opoint
;
5321 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5322 int carryover
= p
->decoding_carryover
;
5325 chars
= (char *) alloca (carryover
+ readmax
);
5327 /* See the comment above. */
5328 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5330 #ifdef DATAGRAM_SOCKETS
5331 /* We have a working select, so proc_buffered_char is always -1. */
5332 if (DATAGRAM_CHAN_P (channel
))
5334 int len
= datagram_address
[channel
].len
;
5335 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5336 0, datagram_address
[channel
].sa
, &len
);
5340 if (proc_buffered_char
[channel
] < 0)
5342 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5343 #ifdef ADAPTIVE_READ_BUFFERING
5344 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5346 int delay
= p
->read_output_delay
;
5349 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5352 process_output_delay_count
++;
5353 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5356 else if (delay
> 0 && (nbytes
== readmax
))
5358 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5360 process_output_delay_count
--;
5362 p
->read_output_delay
= delay
;
5365 p
->read_output_skip
= 1;
5366 process_output_skip
= 1;
5373 chars
[carryover
] = proc_buffered_char
[channel
];
5374 proc_buffered_char
[channel
] = -1;
5375 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5379 nbytes
= nbytes
+ 1;
5382 p
->decoding_carryover
= 0;
5384 /* At this point, NBYTES holds number of bytes just received
5385 (including the one in proc_buffered_char[channel]). */
5388 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5390 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5393 /* Now set NBYTES how many bytes we must decode. */
5394 nbytes
+= carryover
;
5396 /* Read and dispose of the process output. */
5397 outstream
= p
->filter
;
5398 if (!NILP (outstream
))
5400 /* We inhibit quit here instead of just catching it so that
5401 hitting ^G when a filter happens to be running won't screw
5403 int count
= SPECPDL_INDEX ();
5404 Lisp_Object odeactivate
;
5405 Lisp_Object obuffer
, okeymap
;
5407 int outer_running_asynch_code
= running_asynch_code
;
5408 int waiting
= waiting_for_user_input_p
;
5410 /* No need to gcpro these, because all we do with them later
5411 is test them for EQness, and none of them should be a string. */
5412 odeactivate
= Vdeactivate_mark
;
5413 XSETBUFFER (obuffer
, current_buffer
);
5414 okeymap
= current_buffer
->keymap
;
5416 specbind (Qinhibit_quit
, Qt
);
5417 specbind (Qlast_nonmenu_event
, Qt
);
5419 /* In case we get recursively called,
5420 and we already saved the match data nonrecursively,
5421 save the same match data in safely recursive fashion. */
5422 if (outer_running_asynch_code
)
5425 /* Don't clobber the CURRENT match data, either! */
5426 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5427 restore_search_regs ();
5428 record_unwind_save_match_data ();
5429 Fset_match_data (tem
, Qt
);
5432 /* For speed, if a search happens within this code,
5433 save the match data in a special nonrecursive fashion. */
5434 running_asynch_code
= 1;
5436 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5437 text
= coding
->dst_object
;
5438 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5439 /* A new coding system might be found. */
5440 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5442 p
->decode_coding_system
= Vlast_coding_system_used
;
5444 /* Don't call setup_coding_system for
5445 proc_decode_coding_system[channel] here. It is done in
5446 detect_coding called via decode_coding above. */
5448 /* If a coding system for encoding is not yet decided, we set
5449 it as the same as coding-system for decoding.
5451 But, before doing that we must check if
5452 proc_encode_coding_system[p->outfd] surely points to a
5453 valid memory because p->outfd will be changed once EOF is
5454 sent to the process. */
5455 if (NILP (p
->encode_coding_system
)
5456 && proc_encode_coding_system
[p
->outfd
])
5458 p
->encode_coding_system
5459 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5460 setup_coding_system (p
->encode_coding_system
,
5461 proc_encode_coding_system
[p
->outfd
]);
5465 if (coding
->carryover_bytes
> 0)
5467 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5468 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5469 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5470 coding
->carryover_bytes
);
5471 p
->decoding_carryover
= coding
->carryover_bytes
;
5473 if (SBYTES (text
) > 0)
5474 internal_condition_case_1 (read_process_output_call
,
5476 Fcons (proc
, Fcons (text
, Qnil
))),
5477 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5478 read_process_output_error_handler
);
5480 /* If we saved the match data nonrecursively, restore it now. */
5481 restore_search_regs ();
5482 running_asynch_code
= outer_running_asynch_code
;
5484 /* Handling the process output should not deactivate the mark. */
5485 Vdeactivate_mark
= odeactivate
;
5487 /* Restore waiting_for_user_input_p as it was
5488 when we were called, in case the filter clobbered it. */
5489 waiting_for_user_input_p
= waiting
;
5491 #if 0 /* Call record_asynch_buffer_change unconditionally,
5492 because we might have changed minor modes or other things
5493 that affect key bindings. */
5494 if (! EQ (Fcurrent_buffer (), obuffer
)
5495 || ! EQ (current_buffer
->keymap
, okeymap
))
5497 /* But do it only if the caller is actually going to read events.
5498 Otherwise there's no need to make him wake up, and it could
5499 cause trouble (for example it would make sit_for return). */
5500 if (waiting_for_user_input_p
== -1)
5501 record_asynch_buffer_change ();
5503 unbind_to (count
, Qnil
);
5507 /* If no filter, write into buffer if it isn't dead. */
5508 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5510 Lisp_Object old_read_only
;
5511 int old_begv
, old_zv
;
5512 int old_begv_byte
, old_zv_byte
;
5513 Lisp_Object odeactivate
;
5514 int before
, before_byte
;
5518 int count
= SPECPDL_INDEX ();
5520 odeactivate
= Vdeactivate_mark
;
5522 record_unwind_protect (Fset_buffer
, Fcurrent_buffer ());
5523 Fset_buffer (p
->buffer
);
5525 opoint_byte
= PT_BYTE
;
5526 old_read_only
= current_buffer
->read_only
;
5529 old_begv_byte
= BEGV_BYTE
;
5530 old_zv_byte
= ZV_BYTE
;
5532 current_buffer
->read_only
= Qnil
;
5534 /* Insert new output into buffer
5535 at the current end-of-output marker,
5536 thus preserving logical ordering of input and output. */
5537 if (XMARKER (p
->mark
)->buffer
)
5538 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5539 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5542 SET_PT_BOTH (ZV
, ZV_BYTE
);
5544 before_byte
= PT_BYTE
;
5546 /* If the output marker is outside of the visible region, save
5547 the restriction and widen. */
5548 if (! (BEGV
<= PT
&& PT
<= ZV
))
5551 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5552 text
= coding
->dst_object
;
5553 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5554 /* A new coding system might be found. See the comment in the
5555 similar code in the previous `if' block. */
5556 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5558 p
->decode_coding_system
= Vlast_coding_system_used
;
5559 if (NILP (p
->encode_coding_system
)
5560 && proc_encode_coding_system
[p
->outfd
])
5562 p
->encode_coding_system
5563 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5564 setup_coding_system (p
->encode_coding_system
,
5565 proc_encode_coding_system
[p
->outfd
]);
5568 if (coding
->carryover_bytes
> 0)
5570 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5571 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5572 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5573 coding
->carryover_bytes
);
5574 p
->decoding_carryover
= coding
->carryover_bytes
;
5576 /* Adjust the multibyteness of TEXT to that of the buffer. */
5577 if (NILP (current_buffer
->enable_multibyte_characters
)
5578 != ! STRING_MULTIBYTE (text
))
5579 text
= (STRING_MULTIBYTE (text
)
5580 ? Fstring_as_unibyte (text
)
5581 : Fstring_to_multibyte (text
));
5582 /* Insert before markers in case we are inserting where
5583 the buffer's mark is, and the user's next command is Meta-y. */
5584 insert_from_string_before_markers (text
, 0, 0,
5585 SCHARS (text
), SBYTES (text
), 0);
5587 /* Make sure the process marker's position is valid when the
5588 process buffer is changed in the signal_after_change above.
5589 W3 is known to do that. */
5590 if (BUFFERP (p
->buffer
)
5591 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5592 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5594 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5596 update_mode_lines
++;
5598 /* Make sure opoint and the old restrictions
5599 float ahead of any new text just as point would. */
5600 if (opoint
>= before
)
5602 opoint
+= PT
- before
;
5603 opoint_byte
+= PT_BYTE
- before_byte
;
5605 if (old_begv
> before
)
5607 old_begv
+= PT
- before
;
5608 old_begv_byte
+= PT_BYTE
- before_byte
;
5610 if (old_zv
>= before
)
5612 old_zv
+= PT
- before
;
5613 old_zv_byte
+= PT_BYTE
- before_byte
;
5616 /* If the restriction isn't what it should be, set it. */
5617 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5618 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5620 /* Handling the process output should not deactivate the mark. */
5621 Vdeactivate_mark
= odeactivate
;
5623 current_buffer
->read_only
= old_read_only
;
5624 SET_PT_BOTH (opoint
, opoint_byte
);
5625 unbind_to (count
, Qnil
);
5630 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5632 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5633 This is intended for use by asynchronous process output filters and sentinels. */)
5636 return (waiting_for_user_input_p
? Qt
: Qnil
);
5639 /* Sending data to subprocess */
5641 jmp_buf send_process_frame
;
5642 Lisp_Object process_sent_to
;
5645 send_process_trap ()
5647 SIGNAL_THREAD_CHECK (SIGPIPE
);
5648 sigunblock (sigmask (SIGPIPE
));
5649 longjmp (send_process_frame
, 1);
5652 /* Send some data to process PROC.
5653 BUF is the beginning of the data; LEN is the number of characters.
5654 OBJECT is the Lisp object that the data comes from. If OBJECT is
5655 nil or t, it means that the data comes from C string.
5657 If OBJECT is not nil, the data is encoded by PROC's coding-system
5658 for encoding before it is sent.
5660 This function can evaluate Lisp code and can garbage collect. */
5663 send_process (proc
, buf
, len
, object
)
5664 volatile Lisp_Object proc
;
5665 unsigned char *volatile buf
;
5667 volatile Lisp_Object object
;
5669 /* Use volatile to protect variables from being clobbered by longjmp. */
5670 struct Lisp_Process
*p
= XPROCESS (proc
);
5672 struct coding_system
*coding
;
5673 struct gcpro gcpro1
;
5674 SIGTYPE (*volatile old_sigpipe
) ();
5678 if (p
->raw_status_new
)
5680 if (! EQ (p
->status
, Qrun
))
5681 error ("Process %s not running", SDATA (p
->name
));
5683 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5685 coding
= proc_encode_coding_system
[p
->outfd
];
5686 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5688 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5689 || (BUFFERP (object
)
5690 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5693 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5694 /* The coding system for encoding was changed to raw-text
5695 because we sent a unibyte text previously. Now we are
5696 sending a multibyte text, thus we must encode it by the
5697 original coding system specified for the current process. */
5698 setup_coding_system (p
->encode_coding_system
, coding
);
5699 coding
->src_multibyte
= 1;
5703 /* For sending a unibyte text, character code conversion should
5704 not take place but EOL conversion should. So, setup raw-text
5705 or one of the subsidiary if we have not yet done it. */
5706 if (CODING_REQUIRE_ENCODING (coding
))
5708 if (CODING_REQUIRE_FLUSHING (coding
))
5710 /* But, before changing the coding, we must flush out data. */
5711 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5712 send_process (proc
, "", 0, Qt
);
5713 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5715 setup_coding_system (raw_text_coding_system
5716 (Vlast_coding_system_used
),
5718 coding
->src_multibyte
= 0;
5721 coding
->dst_multibyte
= 0;
5723 if (CODING_REQUIRE_ENCODING (coding
))
5725 coding
->dst_object
= Qt
;
5726 if (BUFFERP (object
))
5728 int from_byte
, from
, to
;
5729 int save_pt
, save_pt_byte
;
5730 struct buffer
*cur
= current_buffer
;
5732 set_buffer_internal (XBUFFER (object
));
5733 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5735 from_byte
= PTR_BYTE_POS (buf
);
5736 from
= BYTE_TO_CHAR (from_byte
);
5737 to
= BYTE_TO_CHAR (from_byte
+ len
);
5738 TEMP_SET_PT_BOTH (from
, from_byte
);
5739 encode_coding_object (coding
, object
, from
, from_byte
,
5740 to
, from_byte
+ len
, Qt
);
5741 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5742 set_buffer_internal (cur
);
5744 else if (STRINGP (object
))
5746 encode_coding_object (coding
, object
, 0, 0, SCHARS (object
),
5747 SBYTES (object
), Qt
);
5751 coding
->dst_object
= make_unibyte_string (buf
, len
);
5752 coding
->produced
= len
;
5755 len
= coding
->produced
;
5756 object
= coding
->dst_object
;
5757 buf
= SDATA (object
);
5760 if (pty_max_bytes
== 0)
5762 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5763 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5764 if (pty_max_bytes
< 0)
5765 pty_max_bytes
= 250;
5767 pty_max_bytes
= 250;
5769 /* Deduct one, to leave space for the eof. */
5773 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5774 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5775 when returning with longjmp despite being declared volatile. */
5776 if (!setjmp (send_process_frame
))
5778 process_sent_to
= proc
;
5783 /* Decide how much data we can send in one batch.
5784 Long lines need to be split into multiple batches. */
5787 /* Starting this at zero is always correct when not the first
5788 iteration because the previous iteration ended by sending C-d.
5789 It may not be correct for the first iteration
5790 if a partial line was sent in a separate send_process call.
5791 If that proves worth handling, we need to save linepos
5792 in the process object. */
5794 unsigned char *ptr
= (unsigned char *) buf
;
5795 unsigned char *end
= (unsigned char *) buf
+ len
;
5797 /* Scan through this text for a line that is too long. */
5798 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5806 /* If we found one, break the line there
5807 and put in a C-d to force the buffer through. */
5811 /* Send this batch, using one or more write calls. */
5814 int outfd
= p
->outfd
;
5815 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5816 #ifdef DATAGRAM_SOCKETS
5817 if (DATAGRAM_CHAN_P (outfd
))
5819 rv
= sendto (outfd
, (char *) buf
, this,
5820 0, datagram_address
[outfd
].sa
,
5821 datagram_address
[outfd
].len
);
5822 if (rv
< 0 && errno
== EMSGSIZE
)
5824 signal (SIGPIPE
, old_sigpipe
);
5825 report_file_error ("sending datagram",
5826 Fcons (proc
, Qnil
));
5832 rv
= emacs_write (outfd
, (char *) buf
, this);
5833 #ifdef ADAPTIVE_READ_BUFFERING
5834 if (p
->read_output_delay
> 0
5835 && p
->adaptive_read_buffering
== 1)
5837 p
->read_output_delay
= 0;
5838 process_output_delay_count
--;
5839 p
->read_output_skip
= 0;
5843 signal (SIGPIPE
, old_sigpipe
);
5849 || errno
== EWOULDBLOCK
5855 /* Buffer is full. Wait, accepting input;
5856 that may allow the program
5857 to finish doing output and read more. */
5861 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5862 /* A gross hack to work around a bug in FreeBSD.
5863 In the following sequence, read(2) returns
5867 write(2) 954 bytes, get EAGAIN
5868 read(2) 1024 bytes in process_read_output
5869 read(2) 11 bytes in process_read_output
5871 That is, read(2) returns more bytes than have
5872 ever been written successfully. The 1033 bytes
5873 read are the 1022 bytes written successfully
5874 after processing (for example with CRs added if
5875 the terminal is set up that way which it is
5876 here). The same bytes will be seen again in a
5877 later read(2), without the CRs. */
5879 if (errno
== EAGAIN
)
5882 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5884 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5886 /* Running filters might relocate buffers or strings.
5887 Arrange to relocate BUF. */
5888 if (BUFFERP (object
))
5889 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5890 else if (STRINGP (object
))
5891 offset
= buf
- SDATA (object
);
5893 #ifdef EMACS_HAS_USECS
5894 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5896 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5899 if (BUFFERP (object
))
5900 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5901 else if (STRINGP (object
))
5902 buf
= offset
+ SDATA (object
);
5907 /* This is a real error. */
5908 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5915 /* If we sent just part of the string, put in an EOF (C-d)
5916 to force it through, before we send the rest. */
5918 Fprocess_send_eof (proc
);
5923 signal (SIGPIPE
, old_sigpipe
);
5924 proc
= process_sent_to
;
5925 p
= XPROCESS (proc
);
5926 p
->raw_status_new
= 0;
5927 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5928 p
->tick
= ++process_tick
;
5929 deactivate_process (proc
);
5930 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5936 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5938 doc
: /* Send current contents of region as input to PROCESS.
5939 PROCESS may be a process, a buffer, the name of a process or buffer, or
5940 nil, indicating the current buffer's process.
5941 Called from program, takes three arguments, PROCESS, START and END.
5942 If the region is more than 500 characters long,
5943 it is sent in several bunches. This may happen even for shorter regions.
5944 Output from processes can arrive in between bunches. */)
5945 (process
, start
, end
)
5946 Lisp_Object process
, start
, end
;
5951 proc
= get_process (process
);
5952 validate_region (&start
, &end
);
5954 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5955 move_gap (XINT (start
));
5957 start1
= CHAR_TO_BYTE (XINT (start
));
5958 end1
= CHAR_TO_BYTE (XINT (end
));
5959 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5960 Fcurrent_buffer ());
5965 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5967 doc
: /* Send PROCESS the contents of STRING as input.
5968 PROCESS may be a process, a buffer, the name of a process or buffer, or
5969 nil, indicating the current buffer's process.
5970 If STRING is more than 500 characters long,
5971 it is sent in several bunches. This may happen even for shorter strings.
5972 Output from processes can arrive in between bunches. */)
5974 Lisp_Object process
, string
;
5977 CHECK_STRING (string
);
5978 proc
= get_process (process
);
5979 send_process (proc
, SDATA (string
),
5980 SBYTES (string
), string
);
5984 /* Return the foreground process group for the tty/pty that
5985 the process P uses. */
5987 emacs_get_tty_pgrp (p
)
5988 struct Lisp_Process
*p
;
5993 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5996 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5997 master side. Try the slave side. */
5998 fd
= emacs_open (SDATA (p
->tty_name
), O_RDONLY
, 0);
6002 ioctl (fd
, TIOCGPGRP
, &gid
);
6006 #endif /* defined (TIOCGPGRP ) */
6011 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
6012 Sprocess_running_child_p
, 0, 1, 0,
6013 doc
: /* Return t if PROCESS has given the terminal to a child.
6014 If the operating system does not make it possible to find out,
6015 return t unconditionally. */)
6017 Lisp_Object process
;
6019 /* Initialize in case ioctl doesn't exist or gives an error,
6020 in a way that will cause returning t. */
6023 struct Lisp_Process
*p
;
6025 proc
= get_process (process
);
6026 p
= XPROCESS (proc
);
6028 if (!EQ (p
->type
, Qreal
))
6029 error ("Process %s is not a subprocess",
6032 error ("Process %s is not active",
6035 gid
= emacs_get_tty_pgrp (p
);
6042 /* send a signal number SIGNO to PROCESS.
6043 If CURRENT_GROUP is t, that means send to the process group
6044 that currently owns the terminal being used to communicate with PROCESS.
6045 This is used for various commands in shell mode.
6046 If CURRENT_GROUP is lambda, that means send to the process group
6047 that currently owns the terminal, but only if it is NOT the shell itself.
6049 If NOMSG is zero, insert signal-announcements into process's buffers
6052 If we can, we try to signal PROCESS by sending control characters
6053 down the pty. This allows us to signal inferiors who have changed
6054 their uid, for which killpg would return an EPERM error. */
6057 process_send_signal (process
, signo
, current_group
, nomsg
)
6058 Lisp_Object process
;
6060 Lisp_Object current_group
;
6064 register struct Lisp_Process
*p
;
6068 proc
= get_process (process
);
6069 p
= XPROCESS (proc
);
6071 if (!EQ (p
->type
, Qreal
))
6072 error ("Process %s is not a subprocess",
6075 error ("Process %s is not active",
6079 current_group
= Qnil
;
6081 /* If we are using pgrps, get a pgrp number and make it negative. */
6082 if (NILP (current_group
))
6083 /* Send the signal to the shell's process group. */
6087 #ifdef SIGNALS_VIA_CHARACTERS
6088 /* If possible, send signals to the entire pgrp
6089 by sending an input character to it. */
6091 /* TERMIOS is the latest and bestest, and seems most likely to
6092 work. If the system has it, use it. */
6095 cc_t
*sig_char
= NULL
;
6097 tcgetattr (p
->infd
, &t
);
6102 sig_char
= &t
.c_cc
[VINTR
];
6106 sig_char
= &t
.c_cc
[VQUIT
];
6110 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
6111 sig_char
= &t
.c_cc
[VSWTCH
];
6113 sig_char
= &t
.c_cc
[VSUSP
];
6118 if (sig_char
&& *sig_char
!= CDISABLE
)
6120 send_process (proc
, sig_char
, 1, Qnil
);
6123 /* If we can't send the signal with a character,
6124 fall through and send it another way. */
6125 #else /* ! HAVE_TERMIOS */
6127 /* On Berkeley descendants, the following IOCTL's retrieve the
6128 current control characters. */
6129 #if defined (TIOCGLTC) && defined (TIOCGETC)
6137 ioctl (p
->infd
, TIOCGETC
, &c
);
6138 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
6141 ioctl (p
->infd
, TIOCGETC
, &c
);
6142 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
6146 ioctl (p
->infd
, TIOCGLTC
, &lc
);
6147 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
6149 #endif /* ! defined (SIGTSTP) */
6152 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6154 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
6161 ioctl (p
->infd
, TCGETA
, &t
);
6162 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
6165 ioctl (p
->infd
, TCGETA
, &t
);
6166 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6170 ioctl (p
->infd
, TCGETA
, &t
);
6171 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6173 #endif /* ! defined (SIGTSTP) */
6175 #else /* ! defined (TCGETA) */
6176 Your configuration files are messed up
.
6177 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6178 you'd better be using one of the alternatives above! */
6179 #endif /* ! defined (TCGETA) */
6180 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6181 /* In this case, the code above should alway return. */
6183 #endif /* ! defined HAVE_TERMIOS */
6185 /* The code above may fall through if it can't
6186 handle the signal. */
6187 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6190 /* Get the current pgrp using the tty itself, if we have that.
6191 Otherwise, use the pty to get the pgrp.
6192 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6193 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6194 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6195 His patch indicates that if TIOCGPGRP returns an error, then
6196 we should just assume that p->pid is also the process group id. */
6198 gid
= emacs_get_tty_pgrp (p
);
6201 /* If we can't get the information, assume
6202 the shell owns the tty. */
6205 /* It is not clear whether anything really can set GID to -1.
6206 Perhaps on some system one of those ioctls can or could do so.
6207 Or perhaps this is vestigial. */
6210 #else /* ! defined (TIOCGPGRP ) */
6211 /* Can't select pgrps on this system, so we know that
6212 the child itself heads the pgrp. */
6214 #endif /* ! defined (TIOCGPGRP ) */
6216 /* If current_group is lambda, and the shell owns the terminal,
6217 don't send any signal. */
6218 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6226 p
->raw_status_new
= 0;
6228 p
->tick
= ++process_tick
;
6231 status_notify (NULL
);
6232 redisplay_preserve_echo_area (13);
6235 #endif /* ! defined (SIGCONT) */
6239 flush_pending_output (p
->infd
);
6243 /* If we don't have process groups, send the signal to the immediate
6244 subprocess. That isn't really right, but it's better than any
6245 obvious alternative. */
6248 kill (p
->pid
, signo
);
6252 /* gid may be a pid, or minus a pgrp's number */
6254 if (!NILP (current_group
))
6256 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6257 EMACS_KILLPG (gid
, signo
);
6264 #else /* ! defined (TIOCSIGSEND) */
6265 EMACS_KILLPG (gid
, signo
);
6266 #endif /* ! defined (TIOCSIGSEND) */
6269 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6270 doc
: /* Interrupt process PROCESS.
6271 PROCESS may be a process, a buffer, or the name of a process or buffer.
6272 No arg or nil means current buffer's process.
6273 Second arg CURRENT-GROUP non-nil means send signal to
6274 the current process-group of the process's controlling terminal
6275 rather than to the process's own process group.
6276 If the process is a shell, this means interrupt current subjob
6277 rather than the shell.
6279 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6280 don't send the signal. */)
6281 (process
, current_group
)
6282 Lisp_Object process
, current_group
;
6284 process_send_signal (process
, SIGINT
, current_group
, 0);
6288 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6289 doc
: /* Kill process PROCESS. May be process or name of one.
6290 See function `interrupt-process' for more details on usage. */)
6291 (process
, current_group
)
6292 Lisp_Object process
, current_group
;
6294 process_send_signal (process
, SIGKILL
, current_group
, 0);
6298 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6299 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6300 See function `interrupt-process' for more details on usage. */)
6301 (process
, current_group
)
6302 Lisp_Object process
, current_group
;
6304 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6308 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6309 doc
: /* Stop process PROCESS. May be process or name of one.
6310 See function `interrupt-process' for more details on usage.
6311 If PROCESS is a network or serial process, inhibit handling of incoming
6313 (process
, current_group
)
6314 Lisp_Object process
, current_group
;
6317 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6319 struct Lisp_Process
*p
;
6321 p
= XPROCESS (process
);
6322 if (NILP (p
->command
)
6325 FD_CLR (p
->infd
, &input_wait_mask
);
6326 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6333 error ("No SIGTSTP support");
6335 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6340 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6341 doc
: /* Continue process PROCESS. May be process or name of one.
6342 See function `interrupt-process' for more details on usage.
6343 If PROCESS is a network or serial process, resume handling of incoming
6345 (process
, current_group
)
6346 Lisp_Object process
, current_group
;
6349 if (PROCESSP (process
) && (NETCONN_P (process
) || SERIALCONN_P (process
)))
6351 struct Lisp_Process
*p
;
6353 p
= XPROCESS (process
);
6354 if (EQ (p
->command
, Qt
)
6356 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6358 FD_SET (p
->infd
, &input_wait_mask
);
6359 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6361 if (fd_info
[ p
->infd
].flags
& FILE_SERIAL
)
6362 PurgeComm (fd_info
[ p
->infd
].hnd
, PURGE_RXABORT
| PURGE_RXCLEAR
);
6365 tcflush (p
->infd
, TCIFLUSH
);
6373 process_send_signal (process
, SIGCONT
, current_group
, 0);
6375 error ("No SIGCONT support");
6380 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6381 2, 2, "sProcess (name or number): \nnSignal code: ",
6382 doc
: /* Send PROCESS the signal with code SIGCODE.
6383 PROCESS may also be a number specifying the process id of the
6384 process to signal; in this case, the process need not be a child of
6386 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6388 Lisp_Object process
, sigcode
;
6392 if (INTEGERP (process
))
6394 pid
= XINT (process
);
6398 if (FLOATP (process
))
6400 pid
= (pid_t
) XFLOAT_DATA (process
);
6404 if (STRINGP (process
))
6407 if (tem
= Fget_process (process
), NILP (tem
))
6409 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6416 process
= get_process (process
);
6421 CHECK_PROCESS (process
);
6422 pid
= XPROCESS (process
)->pid
;
6424 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6428 #define parse_signal(NAME, VALUE) \
6429 else if (!xstrcasecmp (name, NAME)) \
6430 XSETINT (sigcode, VALUE)
6432 if (INTEGERP (sigcode
))
6436 unsigned char *name
;
6438 CHECK_SYMBOL (sigcode
);
6439 name
= SDATA (SYMBOL_NAME (sigcode
));
6441 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6447 parse_signal ("usr1", SIGUSR1
);
6450 parse_signal ("usr2", SIGUSR2
);
6453 parse_signal ("term", SIGTERM
);
6456 parse_signal ("hup", SIGHUP
);
6459 parse_signal ("int", SIGINT
);
6462 parse_signal ("quit", SIGQUIT
);
6465 parse_signal ("ill", SIGILL
);
6468 parse_signal ("abrt", SIGABRT
);
6471 parse_signal ("emt", SIGEMT
);
6474 parse_signal ("kill", SIGKILL
);
6477 parse_signal ("fpe", SIGFPE
);
6480 parse_signal ("bus", SIGBUS
);
6483 parse_signal ("segv", SIGSEGV
);
6486 parse_signal ("sys", SIGSYS
);
6489 parse_signal ("pipe", SIGPIPE
);
6492 parse_signal ("alrm", SIGALRM
);
6495 parse_signal ("urg", SIGURG
);
6498 parse_signal ("stop", SIGSTOP
);
6501 parse_signal ("tstp", SIGTSTP
);
6504 parse_signal ("cont", SIGCONT
);
6507 parse_signal ("chld", SIGCHLD
);
6510 parse_signal ("ttin", SIGTTIN
);
6513 parse_signal ("ttou", SIGTTOU
);
6516 parse_signal ("io", SIGIO
);
6519 parse_signal ("xcpu", SIGXCPU
);
6522 parse_signal ("xfsz", SIGXFSZ
);
6525 parse_signal ("vtalrm", SIGVTALRM
);
6528 parse_signal ("prof", SIGPROF
);
6531 parse_signal ("winch", SIGWINCH
);
6534 parse_signal ("info", SIGINFO
);
6537 error ("Undefined signal name %s", name
);
6542 return make_number (kill (pid
, XINT (sigcode
)));
6545 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6546 doc
: /* Make PROCESS see end-of-file in its input.
6547 EOF comes after any text already sent to it.
6548 PROCESS may be a process, a buffer, the name of a process or buffer, or
6549 nil, indicating the current buffer's process.
6550 If PROCESS is a network connection, or is a process communicating
6551 through a pipe (as opposed to a pty), then you cannot send any more
6552 text to PROCESS after you call this function.
6553 If PROCESS is a serial process, wait until all output written to the
6554 process has been transmitted to the serial port. */)
6556 Lisp_Object process
;
6559 struct coding_system
*coding
;
6561 if (DATAGRAM_CONN_P (process
))
6564 proc
= get_process (process
);
6565 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6567 /* Make sure the process is really alive. */
6568 if (XPROCESS (proc
)->raw_status_new
)
6569 update_status (XPROCESS (proc
));
6570 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6571 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6573 if (CODING_REQUIRE_FLUSHING (coding
))
6575 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6576 send_process (proc
, "", 0, Qnil
);
6579 if (XPROCESS (proc
)->pty_flag
)
6580 send_process (proc
, "\004", 1, Qnil
);
6581 else if (EQ (XPROCESS (proc
)->type
, Qserial
))
6584 if (tcdrain (XPROCESS (proc
)->outfd
) != 0)
6585 error ("tcdrain() failed: %s", emacs_strerror (errno
));
6587 /* Do nothing on Windows because writes are blocking. */
6591 int old_outfd
, new_outfd
;
6593 #ifdef HAVE_SHUTDOWN
6594 /* If this is a network connection, or socketpair is used
6595 for communication with the subprocess, call shutdown to cause EOF.
6596 (In some old system, shutdown to socketpair doesn't work.
6597 Then we just can't win.) */
6598 if (EQ (XPROCESS (proc
)->type
, Qnetwork
)
6599 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6600 shutdown (XPROCESS (proc
)->outfd
, 1);
6601 /* In case of socketpair, outfd == infd, so don't close it. */
6602 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6603 emacs_close (XPROCESS (proc
)->outfd
);
6604 #else /* not HAVE_SHUTDOWN */
6605 emacs_close (XPROCESS (proc
)->outfd
);
6606 #endif /* not HAVE_SHUTDOWN */
6607 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6610 old_outfd
= XPROCESS (proc
)->outfd
;
6612 if (!proc_encode_coding_system
[new_outfd
])
6613 proc_encode_coding_system
[new_outfd
]
6614 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6615 bcopy (proc_encode_coding_system
[old_outfd
],
6616 proc_encode_coding_system
[new_outfd
],
6617 sizeof (struct coding_system
));
6618 bzero (proc_encode_coding_system
[old_outfd
],
6619 sizeof (struct coding_system
));
6621 XPROCESS (proc
)->outfd
= new_outfd
;
6626 /* Kill all processes associated with `buffer'.
6627 If `buffer' is nil, kill all processes */
6630 kill_buffer_processes (buffer
)
6633 Lisp_Object tail
, proc
;
6635 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6637 proc
= XCDR (XCAR (tail
));
6639 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6641 if (NETCONN_P (proc
) || SERIALCONN_P (proc
))
6642 Fdelete_process (proc
);
6643 else if (XPROCESS (proc
)->infd
>= 0)
6644 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6649 /* On receipt of a signal that a child status has changed, loop asking
6650 about children with changed statuses until the system says there
6653 All we do is change the status; we do not run sentinels or print
6654 notifications. That is saved for the next time keyboard input is
6655 done, in order to avoid timing errors.
6657 ** WARNING: this can be called during garbage collection.
6658 Therefore, it must not be fooled by the presence of mark bits in
6661 ** USG WARNING: Although it is not obvious from the documentation
6662 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6663 signal() before executing at least one wait(), otherwise the
6664 handler will be called again, resulting in an infinite loop. The
6665 relevant portion of the documentation reads "SIGCLD signals will be
6666 queued and the signal-catching function will be continually
6667 reentered until the queue is empty". Invoking signal() causes the
6668 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6671 ** Malloc WARNING: This should never call malloc either directly or
6672 indirectly; if it does, that is a bug */
6676 sigchld_handler (signo
)
6679 int old_errno
= errno
;
6681 register struct Lisp_Process
*p
;
6682 extern EMACS_TIME
*input_available_clear_time
;
6684 SIGNAL_THREAD_CHECK (signo
);
6695 #endif /* no WUNTRACED */
6696 /* Keep trying to get a status until we get a definitive result. */
6700 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6702 while (pid
< 0 && errno
== EINTR
);
6706 /* PID == 0 means no processes found, PID == -1 means a real
6707 failure. We have done all our job, so return. */
6709 /* USG systems forget handlers when they are used;
6710 must reestablish each time */
6711 #if defined (USG) && !defined (POSIX_SIGNALS)
6712 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6719 #endif /* no WNOHANG */
6721 /* Find the process that signaled us, and record its status. */
6723 /* The process can have been deleted by Fdelete_process. */
6724 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6726 Lisp_Object xpid
= XCAR (tail
);
6727 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6728 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6730 XSETCAR (tail
, Qnil
);
6731 goto sigchld_end_of_loop
;
6735 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6737 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6739 proc
= XCDR (XCAR (tail
));
6740 p
= XPROCESS (proc
);
6741 if (EQ (p
->type
, Qreal
) && p
->pid
== pid
)
6746 /* Look for an asynchronous process whose pid hasn't been filled
6749 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6751 proc
= XCDR (XCAR (tail
));
6752 p
= XPROCESS (proc
);
6758 /* Change the status of the process that was found. */
6761 int clear_desc_flag
= 0;
6763 p
->tick
= ++process_tick
;
6765 p
->raw_status_new
= 1;
6767 /* If process has terminated, stop waiting for its output. */
6768 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6770 clear_desc_flag
= 1;
6772 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6773 if (clear_desc_flag
)
6775 FD_CLR (p
->infd
, &input_wait_mask
);
6776 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6779 /* Tell wait_reading_process_output that it needs to wake up and
6781 if (input_available_clear_time
)
6782 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6785 /* There was no asynchronous process found for that pid: we have
6786 a synchronous process. */
6789 synch_process_alive
= 0;
6791 /* Report the status of the synchronous process. */
6793 synch_process_retcode
= WRETCODE (w
);
6794 else if (WIFSIGNALED (w
))
6795 synch_process_termsig
= WTERMSIG (w
);
6797 /* Tell wait_reading_process_output that it needs to wake up and
6799 if (input_available_clear_time
)
6800 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6803 sigchld_end_of_loop
:
6806 /* On some systems, we must return right away.
6807 If any more processes want to signal us, we will
6809 Otherwise (on systems that have WNOHANG), loop around
6810 to use up all the processes that have something to tell us. */
6811 #if (defined WINDOWSNT \
6812 || (defined USG && !defined GNU_LINUX \
6813 && !(defined HPUX && defined WNOHANG)))
6814 #if defined (USG) && ! defined (POSIX_SIGNALS)
6815 signal (signo
, sigchld_handler
);
6819 #endif /* USG, but not HPUX with WNOHANG */
6822 #endif /* SIGCHLD */
6826 exec_sentinel_unwind (data
)
6829 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6834 exec_sentinel_error_handler (error
)
6837 cmd_error_internal (error
, "error in process sentinel: ");
6839 update_echo_area ();
6840 Fsleep_for (make_number (2), Qnil
);
6845 exec_sentinel (proc
, reason
)
6846 Lisp_Object proc
, reason
;
6848 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6849 register struct Lisp_Process
*p
= XPROCESS (proc
);
6850 int count
= SPECPDL_INDEX ();
6851 int outer_running_asynch_code
= running_asynch_code
;
6852 int waiting
= waiting_for_user_input_p
;
6854 if (inhibit_sentinels
)
6857 /* No need to gcpro these, because all we do with them later
6858 is test them for EQness, and none of them should be a string. */
6859 odeactivate
= Vdeactivate_mark
;
6860 XSETBUFFER (obuffer
, current_buffer
);
6861 okeymap
= current_buffer
->keymap
;
6863 sentinel
= p
->sentinel
;
6864 if (NILP (sentinel
))
6867 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6868 assure that it gets restored no matter how the sentinel exits. */
6870 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6871 /* Inhibit quit so that random quits don't screw up a running filter. */
6872 specbind (Qinhibit_quit
, Qt
);
6873 specbind (Qlast_nonmenu_event
, Qt
); /* Why? --Stef */
6875 /* In case we get recursively called,
6876 and we already saved the match data nonrecursively,
6877 save the same match data in safely recursive fashion. */
6878 if (outer_running_asynch_code
)
6881 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6882 restore_search_regs ();
6883 record_unwind_save_match_data ();
6884 Fset_match_data (tem
, Qt
);
6887 /* For speed, if a search happens within this code,
6888 save the match data in a special nonrecursive fashion. */
6889 running_asynch_code
= 1;
6891 internal_condition_case_1 (read_process_output_call
,
6893 Fcons (proc
, Fcons (reason
, Qnil
))),
6894 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6895 exec_sentinel_error_handler
);
6897 /* If we saved the match data nonrecursively, restore it now. */
6898 restore_search_regs ();
6899 running_asynch_code
= outer_running_asynch_code
;
6901 Vdeactivate_mark
= odeactivate
;
6903 /* Restore waiting_for_user_input_p as it was
6904 when we were called, in case the filter clobbered it. */
6905 waiting_for_user_input_p
= waiting
;
6908 if (! EQ (Fcurrent_buffer (), obuffer
)
6909 || ! EQ (current_buffer
->keymap
, okeymap
))
6911 /* But do it only if the caller is actually going to read events.
6912 Otherwise there's no need to make him wake up, and it could
6913 cause trouble (for example it would make sit_for return). */
6914 if (waiting_for_user_input_p
== -1)
6915 record_asynch_buffer_change ();
6917 unbind_to (count
, Qnil
);
6920 /* Report all recent events of a change in process status
6921 (either run the sentinel or output a message).
6922 This is usually done while Emacs is waiting for keyboard input
6923 but can be done at other times. */
6926 status_notify (deleting_process
)
6927 struct Lisp_Process
*deleting_process
;
6929 register Lisp_Object proc
, buffer
;
6930 Lisp_Object tail
, msg
;
6931 struct gcpro gcpro1
, gcpro2
;
6935 /* We need to gcpro tail; if read_process_output calls a filter
6936 which deletes a process and removes the cons to which tail points
6937 from Vprocess_alist, and then causes a GC, tail is an unprotected
6941 /* Set this now, so that if new processes are created by sentinels
6942 that we run, we get called again to handle their status changes. */
6943 update_tick
= process_tick
;
6945 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6948 register struct Lisp_Process
*p
;
6950 proc
= Fcdr (XCAR (tail
));
6951 p
= XPROCESS (proc
);
6953 if (p
->tick
!= p
->update_tick
)
6955 p
->update_tick
= p
->tick
;
6957 /* If process is still active, read any output that remains. */
6958 while (! EQ (p
->filter
, Qt
)
6959 && ! EQ (p
->status
, Qconnect
)
6960 && ! EQ (p
->status
, Qlisten
)
6961 /* Network or serial process not stopped: */
6962 && ! EQ (p
->command
, Qt
)
6964 && p
!= deleting_process
6965 && read_process_output (proc
, p
->infd
) > 0);
6969 /* Get the text to use for the message. */
6970 if (p
->raw_status_new
)
6972 msg
= status_message (p
);
6974 /* If process is terminated, deactivate it or delete it. */
6976 if (CONSP (p
->status
))
6977 symbol
= XCAR (p
->status
);
6979 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6980 || EQ (symbol
, Qclosed
))
6982 if (delete_exited_processes
)
6983 remove_process (proc
);
6985 deactivate_process (proc
);
6988 /* The actions above may have further incremented p->tick.
6989 So set p->update_tick again
6990 so that an error in the sentinel will not cause
6991 this code to be run again. */
6992 p
->update_tick
= p
->tick
;
6993 /* Now output the message suitably. */
6994 if (!NILP (p
->sentinel
))
6995 exec_sentinel (proc
, msg
);
6996 /* Don't bother with a message in the buffer
6997 when a process becomes runnable. */
6998 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
7000 Lisp_Object ro
, tem
;
7001 struct buffer
*old
= current_buffer
;
7002 int opoint
, opoint_byte
;
7003 int before
, before_byte
;
7005 ro
= XBUFFER (buffer
)->read_only
;
7007 /* Avoid error if buffer is deleted
7008 (probably that's why the process is dead, too) */
7009 if (NILP (XBUFFER (buffer
)->name
))
7011 Fset_buffer (buffer
);
7014 opoint_byte
= PT_BYTE
;
7015 /* Insert new output into buffer
7016 at the current end-of-output marker,
7017 thus preserving logical ordering of input and output. */
7018 if (XMARKER (p
->mark
)->buffer
)
7019 Fgoto_char (p
->mark
);
7021 SET_PT_BOTH (ZV
, ZV_BYTE
);
7024 before_byte
= PT_BYTE
;
7026 tem
= current_buffer
->read_only
;
7027 current_buffer
->read_only
= Qnil
;
7028 insert_string ("\nProcess ");
7029 Finsert (1, &p
->name
);
7030 insert_string (" ");
7032 current_buffer
->read_only
= tem
;
7033 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
7035 if (opoint
>= before
)
7036 SET_PT_BOTH (opoint
+ (PT
- before
),
7037 opoint_byte
+ (PT_BYTE
- before_byte
));
7039 SET_PT_BOTH (opoint
, opoint_byte
);
7041 set_buffer_internal (old
);
7046 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
7051 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
7052 Sset_process_coding_system
, 1, 3, 0,
7053 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
7054 DECODING will be used to decode subprocess output and ENCODING to
7055 encode subprocess input. */)
7056 (process
, decoding
, encoding
)
7057 register Lisp_Object process
, decoding
, encoding
;
7059 register struct Lisp_Process
*p
;
7061 CHECK_PROCESS (process
);
7062 p
= XPROCESS (process
);
7064 error ("Input file descriptor of %s closed", SDATA (p
->name
));
7066 error ("Output file descriptor of %s closed", SDATA (p
->name
));
7067 Fcheck_coding_system (decoding
);
7068 Fcheck_coding_system (encoding
);
7069 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
7070 p
->decode_coding_system
= decoding
;
7071 p
->encode_coding_system
= encoding
;
7072 setup_process_coding_systems (process
);
7077 DEFUN ("process-coding-system",
7078 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
7079 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
7081 register Lisp_Object process
;
7083 CHECK_PROCESS (process
);
7084 return Fcons (XPROCESS (process
)->decode_coding_system
,
7085 XPROCESS (process
)->encode_coding_system
);
7088 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
7089 Sset_process_filter_multibyte
, 2, 2, 0,
7090 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
7091 If FLAG is non-nil, the filter is given multibyte strings.
7092 If FLAG is nil, the filter is given unibyte strings. In this case,
7093 all character code conversion except for end-of-line conversion is
7096 Lisp_Object process
, flag
;
7098 register struct Lisp_Process
*p
;
7100 CHECK_PROCESS (process
);
7101 p
= XPROCESS (process
);
7103 p
->decode_coding_system
= raw_text_coding_system (p
->decode_coding_system
);
7104 setup_process_coding_systems (process
);
7109 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
7110 Sprocess_filter_multibyte_p
, 1, 1, 0,
7111 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
7113 Lisp_Object process
;
7115 register struct Lisp_Process
*p
;
7116 struct coding_system
*coding
;
7118 CHECK_PROCESS (process
);
7119 p
= XPROCESS (process
);
7120 coding
= proc_decode_coding_system
[p
->infd
];
7121 return (CODING_FOR_UNIBYTE (coding
) ? Qnil
: Qt
);
7126 /* Add DESC to the set of keyboard input descriptors. */
7129 add_keyboard_wait_descriptor (desc
)
7132 FD_SET (desc
, &input_wait_mask
);
7133 FD_SET (desc
, &non_process_wait_mask
);
7134 if (desc
> max_keyboard_desc
)
7135 max_keyboard_desc
= desc
;
7138 static int add_gpm_wait_descriptor_called_flag
;
7141 add_gpm_wait_descriptor (desc
)
7144 if (! add_gpm_wait_descriptor_called_flag
)
7145 FD_CLR (0, &input_wait_mask
);
7146 add_gpm_wait_descriptor_called_flag
= 1;
7147 FD_SET (desc
, &input_wait_mask
);
7148 FD_SET (desc
, &gpm_wait_mask
);
7149 if (desc
> max_gpm_desc
)
7150 max_gpm_desc
= desc
;
7153 /* From now on, do not expect DESC to give keyboard input. */
7156 delete_keyboard_wait_descriptor (desc
)
7160 int lim
= max_keyboard_desc
;
7162 FD_CLR (desc
, &input_wait_mask
);
7163 FD_CLR (desc
, &non_process_wait_mask
);
7165 if (desc
== max_keyboard_desc
)
7166 for (fd
= 0; fd
< lim
; fd
++)
7167 if (FD_ISSET (fd
, &input_wait_mask
)
7168 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7169 && !FD_ISSET (fd
, &gpm_wait_mask
))
7170 max_keyboard_desc
= fd
;
7174 delete_gpm_wait_descriptor (desc
)
7178 int lim
= max_gpm_desc
;
7180 FD_CLR (desc
, &input_wait_mask
);
7181 FD_CLR (desc
, &non_process_wait_mask
);
7183 if (desc
== max_gpm_desc
)
7184 for (fd
= 0; fd
< lim
; fd
++)
7185 if (FD_ISSET (fd
, &input_wait_mask
)
7186 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7187 && !FD_ISSET (fd
, &non_process_wait_mask
))
7191 /* Return nonzero if *MASK has a bit set
7192 that corresponds to one of the keyboard input descriptors. */
7195 keyboard_bit_set (mask
)
7200 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
7201 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7202 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7208 /* Enumeration of and access to system processes a-la ps(1). */
7210 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7212 doc
: /* Return a list of numerical process IDs of all running processes.
7213 If this functionality is unsupported, return nil.
7215 See `process-attributes' for getting attributes of a process given its ID. */)
7218 return list_system_processes ();
7221 DEFUN ("process-attributes", Fprocess_attributes
,
7222 Sprocess_attributes
, 1, 1, 0,
7223 doc
: /* Return attributes of the process given by its PID, a number.
7225 Value is an alist where each element is a cons cell of the form
7229 If this functionality is unsupported, the value is nil.
7231 See `list-system-processes' for getting a list of all process IDs.
7233 The KEYs of the attributes that this function may return are listed
7234 below, together with the type of the associated VALUE (in parentheses).
7235 Not all platforms support all of these attributes; unsupported
7236 attributes will not appear in the returned alist.
7237 Unless explicitly indicated otherwise, numbers can have either
7238 integer or floating point values.
7240 euid -- Effective user User ID of the process (number)
7241 user -- User name corresponding to euid (string)
7242 egid -- Effective user Group ID of the process (number)
7243 group -- Group name corresponding to egid (string)
7244 comm -- Command name (executable name only) (string)
7245 state -- Process state code, such as "S", "R", or "T" (string)
7246 ppid -- Parent process ID (number)
7247 pgrp -- Process group ID (number)
7248 sess -- Session ID, i.e. process ID of session leader (number)
7249 ttname -- Controlling tty name (string)
7250 tpgid -- ID of foreground process group on the process's tty (number)
7251 minflt -- number of minor page faults (number)
7252 majflt -- number of major page faults (number)
7253 cminflt -- cumulative number of minor page faults (number)
7254 cmajflt -- cumulative number of major page faults (number)
7255 utime -- user time used by the process, in the (HIGH LOW USEC) format
7256 stime -- system time used by the process, in the (HIGH LOW USEC) format
7257 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7258 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7259 cstime -- system time used by the process and its children, (HIGH LOW USEC)
7260 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
7261 pri -- priority of the process (number)
7262 nice -- nice value of the process (number)
7263 thcount -- process thread count (number)
7264 start -- time the process started, in the (HIGH LOW USEC) format
7265 vsize -- virtual memory size of the process in KB's (number)
7266 rss -- resident set size of the process in KB's (number)
7267 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
7268 pcpu -- percents of CPU time used by the process (floating-point number)
7269 pmem -- percents of total physical memory used by process's resident set
7270 (floating-point number)
7271 args -- command line which invoked the process (string). */)
7276 return system_process_attributes (pid
);
7284 inhibit_sentinels
= 0;
7288 if (! noninteractive
|| initialized
)
7290 signal (SIGCHLD
, sigchld_handler
);
7293 FD_ZERO (&input_wait_mask
);
7294 FD_ZERO (&non_keyboard_wait_mask
);
7295 FD_ZERO (&non_process_wait_mask
);
7296 max_process_desc
= 0;
7298 #ifdef NON_BLOCKING_CONNECT
7299 FD_ZERO (&connect_wait_mask
);
7300 num_pending_connects
= 0;
7303 #ifdef ADAPTIVE_READ_BUFFERING
7304 process_output_delay_count
= 0;
7305 process_output_skip
= 0;
7308 /* Don't do this, it caused infinite select loops. The display
7309 method should call add_keyboard_wait_descriptor on stdin if it
7312 FD_SET (0, &input_wait_mask
);
7315 Vprocess_alist
= Qnil
;
7317 deleted_pid_list
= Qnil
;
7319 for (i
= 0; i
< MAXDESC
; i
++)
7321 chan_process
[i
] = Qnil
;
7322 proc_buffered_char
[i
] = -1;
7324 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7325 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7326 #ifdef DATAGRAM_SOCKETS
7327 bzero (datagram_address
, sizeof datagram_address
);
7332 Lisp_Object subfeatures
= Qnil
;
7333 const struct socket_options
*sopt
;
7335 #define ADD_SUBFEATURE(key, val) \
7336 subfeatures = pure_cons (pure_cons (key, pure_cons (val, Qnil)), subfeatures)
7338 #ifdef NON_BLOCKING_CONNECT
7339 ADD_SUBFEATURE (QCnowait
, Qt
);
7341 #ifdef DATAGRAM_SOCKETS
7342 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7344 #ifdef HAVE_SEQPACKET
7345 ADD_SUBFEATURE (QCtype
, Qseqpacket
);
7347 #ifdef HAVE_LOCAL_SOCKETS
7348 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7350 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7352 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7354 #ifdef HAVE_GETSOCKNAME
7355 ADD_SUBFEATURE (QCservice
, Qt
);
7357 #if defined(O_NONBLOCK) || defined(O_NDELAY)
7358 ADD_SUBFEATURE (QCserver
, Qt
);
7361 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7362 subfeatures
= pure_cons (intern_c_string (sopt
->name
), subfeatures
);
7364 Fprovide (intern_c_string ("make-network-process"), subfeatures
);
7366 #endif /* HAVE_SOCKETS */
7368 #if defined (DARWIN_OS)
7369 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7370 processes. As such, we only change the default value. */
7373 char *release
= get_operating_system_release();
7374 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7375 && release
[1] == '.')) {
7376 Vprocess_connection_type
= Qnil
;
7385 Qprocessp
= intern_c_string ("processp");
7386 staticpro (&Qprocessp
);
7387 Qrun
= intern_c_string ("run");
7389 Qstop
= intern_c_string ("stop");
7391 Qsignal
= intern_c_string ("signal");
7392 staticpro (&Qsignal
);
7394 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7397 Qexit = intern_c_string ("exit");
7398 staticpro (&Qexit); */
7400 Qopen
= intern_c_string ("open");
7402 Qclosed
= intern_c_string ("closed");
7403 staticpro (&Qclosed
);
7404 Qconnect
= intern_c_string ("connect");
7405 staticpro (&Qconnect
);
7406 Qfailed
= intern_c_string ("failed");
7407 staticpro (&Qfailed
);
7408 Qlisten
= intern_c_string ("listen");
7409 staticpro (&Qlisten
);
7410 Qlocal
= intern_c_string ("local");
7411 staticpro (&Qlocal
);
7412 Qipv4
= intern_c_string ("ipv4");
7415 Qipv6
= intern_c_string ("ipv6");
7418 Qdatagram
= intern_c_string ("datagram");
7419 staticpro (&Qdatagram
);
7420 Qseqpacket
= intern_c_string ("seqpacket");
7421 staticpro (&Qseqpacket
);
7423 QCport
= intern_c_string (":port");
7424 staticpro (&QCport
);
7425 QCspeed
= intern_c_string (":speed");
7426 staticpro (&QCspeed
);
7427 QCprocess
= intern_c_string (":process");
7428 staticpro (&QCprocess
);
7430 QCbytesize
= intern_c_string (":bytesize");
7431 staticpro (&QCbytesize
);
7432 QCstopbits
= intern_c_string (":stopbits");
7433 staticpro (&QCstopbits
);
7434 QCparity
= intern_c_string (":parity");
7435 staticpro (&QCparity
);
7436 Qodd
= intern_c_string ("odd");
7438 Qeven
= intern_c_string ("even");
7440 QCflowcontrol
= intern_c_string (":flowcontrol");
7441 staticpro (&QCflowcontrol
);
7442 Qhw
= intern_c_string ("hw");
7444 Qsw
= intern_c_string ("sw");
7446 QCsummary
= intern_c_string (":summary");
7447 staticpro (&QCsummary
);
7449 Qreal
= intern_c_string ("real");
7451 Qnetwork
= intern_c_string ("network");
7452 staticpro (&Qnetwork
);
7453 Qserial
= intern_c_string ("serial");
7454 staticpro (&Qserial
);
7456 QCname
= intern_c_string (":name");
7457 staticpro (&QCname
);
7458 QCbuffer
= intern_c_string (":buffer");
7459 staticpro (&QCbuffer
);
7460 QChost
= intern_c_string (":host");
7461 staticpro (&QChost
);
7462 QCservice
= intern_c_string (":service");
7463 staticpro (&QCservice
);
7464 QCtype
= intern_c_string (":type");
7465 staticpro (&QCtype
);
7466 QClocal
= intern_c_string (":local");
7467 staticpro (&QClocal
);
7468 QCremote
= intern_c_string (":remote");
7469 staticpro (&QCremote
);
7470 QCcoding
= intern_c_string (":coding");
7471 staticpro (&QCcoding
);
7472 QCserver
= intern_c_string (":server");
7473 staticpro (&QCserver
);
7474 QCnowait
= intern_c_string (":nowait");
7475 staticpro (&QCnowait
);
7476 QCsentinel
= intern_c_string (":sentinel");
7477 staticpro (&QCsentinel
);
7478 QClog
= intern_c_string (":log");
7480 QCnoquery
= intern_c_string (":noquery");
7481 staticpro (&QCnoquery
);
7482 QCstop
= intern_c_string (":stop");
7483 staticpro (&QCstop
);
7484 QCoptions
= intern_c_string (":options");
7485 staticpro (&QCoptions
);
7486 QCplist
= intern_c_string (":plist");
7487 staticpro (&QCplist
);
7489 Qlast_nonmenu_event
= intern_c_string ("last-nonmenu-event");
7490 staticpro (&Qlast_nonmenu_event
);
7492 staticpro (&Vprocess_alist
);
7494 staticpro (&deleted_pid_list
);
7497 Qeuid
= intern_c_string ("euid");
7499 Qegid
= intern_c_string ("egid");
7501 Quser
= intern_c_string ("user");
7503 Qgroup
= intern_c_string ("group");
7504 staticpro (&Qgroup
);
7505 Qcomm
= intern_c_string ("comm");
7507 Qstate
= intern_c_string ("state");
7508 staticpro (&Qstate
);
7509 Qppid
= intern_c_string ("ppid");
7511 Qpgrp
= intern_c_string ("pgrp");
7513 Qsess
= intern_c_string ("sess");
7515 Qttname
= intern_c_string ("ttname");
7516 staticpro (&Qttname
);
7517 Qtpgid
= intern_c_string ("tpgid");
7518 staticpro (&Qtpgid
);
7519 Qminflt
= intern_c_string ("minflt");
7520 staticpro (&Qminflt
);
7521 Qmajflt
= intern_c_string ("majflt");
7522 staticpro (&Qmajflt
);
7523 Qcminflt
= intern_c_string ("cminflt");
7524 staticpro (&Qcminflt
);
7525 Qcmajflt
= intern_c_string ("cmajflt");
7526 staticpro (&Qcmajflt
);
7527 Qutime
= intern_c_string ("utime");
7528 staticpro (&Qutime
);
7529 Qstime
= intern_c_string ("stime");
7530 staticpro (&Qstime
);
7531 Qtime
= intern_c_string ("time");
7533 Qcutime
= intern_c_string ("cutime");
7534 staticpro (&Qcutime
);
7535 Qcstime
= intern_c_string ("cstime");
7536 staticpro (&Qcstime
);
7537 Qctime
= intern_c_string ("ctime");
7538 staticpro (&Qctime
);
7539 Qpri
= intern_c_string ("pri");
7541 Qnice
= intern_c_string ("nice");
7543 Qthcount
= intern_c_string ("thcount");
7544 staticpro (&Qthcount
);
7545 Qstart
= intern_c_string ("start");
7546 staticpro (&Qstart
);
7547 Qvsize
= intern_c_string ("vsize");
7548 staticpro (&Qvsize
);
7549 Qrss
= intern_c_string ("rss");
7551 Qetime
= intern_c_string ("etime");
7552 staticpro (&Qetime
);
7553 Qpcpu
= intern_c_string ("pcpu");
7555 Qpmem
= intern_c_string ("pmem");
7557 Qargs
= intern_c_string ("args");
7560 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7561 doc
: /* *Non-nil means delete processes immediately when they exit.
7562 A value of nil means don't delete them until `list-processes' is run. */);
7564 delete_exited_processes
= 1;
7566 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7567 doc
: /* Control type of device used to communicate with subprocesses.
7568 Values are nil to use a pipe, or t or `pty' to use a pty.
7569 The value has no effect if the system has no ptys or if all ptys are busy:
7570 then a pipe is used in any case.
7571 The value takes effect when `start-process' is called. */);
7572 Vprocess_connection_type
= Qt
;
7574 #ifdef ADAPTIVE_READ_BUFFERING
7575 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7576 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7577 On some systems, when Emacs reads the output from a subprocess, the output data
7578 is read in very small blocks, potentially resulting in very poor performance.
7579 This behavior can be remedied to some extent by setting this variable to a
7580 non-nil value, as it will automatically delay reading from such processes, to
7581 allow them to produce more output before Emacs tries to read it.
7582 If the value is t, the delay is reset after each write to the process; any other
7583 non-nil value means that the delay is not reset on write.
7584 The variable takes effect when `start-process' is called. */);
7585 Vprocess_adaptive_read_buffering
= Qt
;
7588 defsubr (&Sprocessp
);
7589 defsubr (&Sget_process
);
7590 defsubr (&Sget_buffer_process
);
7591 defsubr (&Sdelete_process
);
7592 defsubr (&Sprocess_status
);
7593 defsubr (&Sprocess_exit_status
);
7594 defsubr (&Sprocess_id
);
7595 defsubr (&Sprocess_name
);
7596 defsubr (&Sprocess_tty_name
);
7597 defsubr (&Sprocess_command
);
7598 defsubr (&Sset_process_buffer
);
7599 defsubr (&Sprocess_buffer
);
7600 defsubr (&Sprocess_mark
);
7601 defsubr (&Sset_process_filter
);
7602 defsubr (&Sprocess_filter
);
7603 defsubr (&Sset_process_sentinel
);
7604 defsubr (&Sprocess_sentinel
);
7605 defsubr (&Sset_process_window_size
);
7606 defsubr (&Sset_process_inherit_coding_system_flag
);
7607 defsubr (&Sprocess_inherit_coding_system_flag
);
7608 defsubr (&Sset_process_query_on_exit_flag
);
7609 defsubr (&Sprocess_query_on_exit_flag
);
7610 defsubr (&Sprocess_contact
);
7611 defsubr (&Sprocess_plist
);
7612 defsubr (&Sset_process_plist
);
7613 defsubr (&Slist_processes
);
7614 defsubr (&Sprocess_list
);
7615 defsubr (&Sstart_process
);
7617 defsubr (&Sserial_process_configure
);
7618 defsubr (&Smake_serial_process
);
7619 #endif /* HAVE_SERIAL */
7621 defsubr (&Sset_network_process_option
);
7622 defsubr (&Smake_network_process
);
7623 defsubr (&Sformat_network_address
);
7624 #endif /* HAVE_SOCKETS */
7625 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7627 defsubr (&Snetwork_interface_list
);
7629 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7630 defsubr (&Snetwork_interface_info
);
7632 #endif /* HAVE_SOCKETS ... */
7633 #ifdef DATAGRAM_SOCKETS
7634 defsubr (&Sprocess_datagram_address
);
7635 defsubr (&Sset_process_datagram_address
);
7637 defsubr (&Saccept_process_output
);
7638 defsubr (&Sprocess_send_region
);
7639 defsubr (&Sprocess_send_string
);
7640 defsubr (&Sinterrupt_process
);
7641 defsubr (&Skill_process
);
7642 defsubr (&Squit_process
);
7643 defsubr (&Sstop_process
);
7644 defsubr (&Scontinue_process
);
7645 defsubr (&Sprocess_running_child_p
);
7646 defsubr (&Sprocess_send_eof
);
7647 defsubr (&Ssignal_process
);
7648 defsubr (&Swaiting_for_user_input_p
);
7649 defsubr (&Sprocess_type
);
7650 defsubr (&Sset_process_coding_system
);
7651 defsubr (&Sprocess_coding_system
);
7652 defsubr (&Sset_process_filter_multibyte
);
7653 defsubr (&Sprocess_filter_multibyte_p
);
7654 defsubr (&Slist_system_processes
);
7655 defsubr (&Sprocess_attributes
);
7659 #else /* not subprocesses */
7661 #include <sys/types.h>
7663 #include <sys/stat.h>
7667 #ifdef HAVE_UNISTD_H
7672 #include "systime.h"
7673 #include "character.h"
7675 #include "termopts.h"
7676 #include "sysselect.h"
7678 extern int frame_garbaged
;
7680 extern EMACS_TIME
timer_check ();
7681 extern int timers_run
;
7683 Lisp_Object QCtype
, QCname
;
7685 Lisp_Object Qeuid
, Qegid
, Qcomm
, Qstate
, Qppid
, Qpgrp
, Qsess
, Qttname
, Qtpgid
;
7686 Lisp_Object Qminflt
, Qmajflt
, Qcminflt
, Qcmajflt
, Qutime
, Qstime
, Qcstime
;
7687 Lisp_Object Qcutime
, Qpri
, Qnice
, Qthcount
, Qstart
, Qvsize
, Qrss
, Qargs
;
7688 Lisp_Object Quser
, Qgroup
, Qetime
, Qpcpu
, Qpmem
, Qtime
, Qctime
;
7690 /* As described above, except assuming that there are no subprocesses:
7692 Wait for timeout to elapse and/or keyboard input to be available.
7695 timeout in seconds, or
7696 zero for no limit, or
7697 -1 means gobble data immediately available but don't wait for any.
7699 read_kbd is a Lisp_Object:
7700 0 to ignore keyboard input, or
7701 1 to return when input is available, or
7702 -1 means caller will actually read the input, so don't throw to
7705 see full version for other parameters. We know that wait_proc will
7706 always be NULL, since `subprocesses' isn't defined.
7708 do_display != 0 means redisplay should be done to show subprocess
7709 output that arrives.
7711 Return true if we received input from any process. */
7714 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7715 wait_for_cell
, wait_proc
, just_wait_proc
)
7716 int time_limit
, microsecs
, read_kbd
, do_display
;
7717 Lisp_Object wait_for_cell
;
7718 struct Lisp_Process
*wait_proc
;
7722 EMACS_TIME end_time
, timeout
;
7723 SELECT_TYPE waitchannels
;
7726 /* What does time_limit really mean? */
7727 if (time_limit
|| microsecs
)
7729 EMACS_GET_TIME (end_time
);
7730 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7731 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7734 /* Turn off periodic alarms (in case they are in use)
7735 and then turn off any other atimers,
7736 because the select emulator uses alarms. */
7738 turn_on_atimers (0);
7742 int timeout_reduced_for_timers
= 0;
7744 /* If calling from keyboard input, do not quit
7745 since we want to return C-g as an input character.
7746 Otherwise, do pending quit if requested. */
7750 /* Exit now if the cell we're waiting for became non-nil. */
7751 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7754 /* Compute time from now till when time limit is up */
7755 /* Exit if already run out */
7756 if (time_limit
== -1)
7758 /* -1 specified for timeout means
7759 gobble output available now
7760 but don't wait at all. */
7762 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7764 else if (time_limit
|| microsecs
)
7766 EMACS_GET_TIME (timeout
);
7767 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7768 if (EMACS_TIME_NEG_P (timeout
))
7773 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7776 /* If our caller will not immediately handle keyboard events,
7777 run timer events directly.
7778 (Callers that will immediately read keyboard events
7779 call timer_delay on their own.) */
7780 if (NILP (wait_for_cell
))
7782 EMACS_TIME timer_delay
;
7786 int old_timers_run
= timers_run
;
7787 timer_delay
= timer_check (1);
7788 if (timers_run
!= old_timers_run
&& do_display
)
7789 /* We must retry, since a timer may have requeued itself
7790 and that could alter the time delay. */
7791 redisplay_preserve_echo_area (14);
7795 while (!detect_input_pending ());
7797 /* If there is unread keyboard input, also return. */
7799 && requeued_events_pending_p ())
7802 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7804 EMACS_TIME difference
;
7805 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7806 if (EMACS_TIME_NEG_P (difference
))
7808 timeout
= timer_delay
;
7809 timeout_reduced_for_timers
= 1;
7814 /* Cause C-g and alarm signals to take immediate action,
7815 and cause input available signals to zero out timeout. */
7817 set_waiting_for_input (&timeout
);
7819 /* Wait till there is something to do. */
7821 if (! read_kbd
&& NILP (wait_for_cell
))
7822 FD_ZERO (&waitchannels
);
7824 FD_SET (0, &waitchannels
);
7826 /* If a frame has been newly mapped and needs updating,
7827 reprocess its display stuff. */
7828 if (frame_garbaged
&& do_display
)
7830 clear_waiting_for_input ();
7831 redisplay_preserve_echo_area (15);
7833 set_waiting_for_input (&timeout
);
7836 if (read_kbd
&& detect_input_pending ())
7839 FD_ZERO (&waitchannels
);
7842 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7847 /* Make C-g and alarm signals set flags again */
7848 clear_waiting_for_input ();
7850 /* If we woke up due to SIGWINCH, actually change size now. */
7851 do_pending_window_change (0);
7853 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7854 /* We waited the full specified time, so return now. */
7859 /* If the system call was interrupted, then go around the
7861 if (xerrno
== EINTR
)
7862 FD_ZERO (&waitchannels
);
7864 error ("select error: %s", emacs_strerror (xerrno
));
7867 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7868 /* System sometimes fails to deliver SIGIO. */
7869 kill (getpid (), SIGIO
);
7872 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7873 kill (getpid (), SIGIO
);
7876 /* Check for keyboard input */
7879 && detect_input_pending_run_timers (do_display
))
7881 swallow_events (do_display
);
7882 if (detect_input_pending_run_timers (do_display
))
7886 /* If there is unread keyboard input, also return. */
7888 && requeued_events_pending_p ())
7891 /* If wait_for_cell. check for keyboard input
7892 but don't run any timers.
7893 ??? (It seems wrong to me to check for keyboard
7894 input at all when wait_for_cell, but the code
7895 has been this way since July 1994.
7896 Try changing this after version 19.31.) */
7897 if (! NILP (wait_for_cell
)
7898 && detect_input_pending ())
7900 swallow_events (do_display
);
7901 if (detect_input_pending ())
7905 /* Exit now if the cell we're waiting for became non-nil. */
7906 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7916 /* Don't confuse make-docfile by having two doc strings for this function.
7917 make-docfile does not pay attention to #if, for good reason! */
7918 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7921 register Lisp_Object name
;
7926 /* Don't confuse make-docfile by having two doc strings for this function.
7927 make-docfile does not pay attention to #if, for good reason! */
7928 DEFUN ("process-inherit-coding-system-flag",
7929 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7933 register Lisp_Object process
;
7935 /* Ignore the argument and return the value of
7936 inherit-process-coding-system. */
7937 return inherit_process_coding_system
? Qt
: Qnil
;
7940 /* Kill all processes associated with `buffer'.
7941 If `buffer' is nil, kill all processes.
7942 Since we have no subprocesses, this does nothing. */
7945 kill_buffer_processes (buffer
)
7950 DEFUN ("list-system-processes", Flist_system_processes
, Slist_system_processes
,
7952 doc
: /* Return a list of numerical process IDs of all running processes.
7953 If this functionality is unsupported, return nil.
7955 See `process-attributes' for getting attributes of a process given its ID. */)
7958 return list_system_processes ();
7961 DEFUN ("process-attributes", Fprocess_attributes
,
7962 Sprocess_attributes
, 1, 1, 0,
7963 doc
: /* Return attributes of the process given by its PID, a number.
7965 Value is an alist where each element is a cons cell of the form
7969 If this functionality is unsupported, the value is nil.
7971 See `list-system-processes' for getting a list of all process IDs.
7973 The KEYs of the attributes that this function may return are listed
7974 below, together with the type of the associated VALUE (in parentheses).
7975 Not all platforms support all of these attributes; unsupported
7976 attributes will not appear in the returned alist.
7977 Unless explicitly indicated otherwise, numbers can have either
7978 integer or floating point values.
7980 euid -- Effective user User ID of the process (number)
7981 user -- User name corresponding to euid (string)
7982 egid -- Effective user Group ID of the process (number)
7983 group -- Group name corresponding to egid (string)
7984 comm -- Command name (executable name only) (string)
7985 state -- Process state code, such as "S", "R", or "T" (string)
7986 ppid -- Parent process ID (number)
7987 pgrp -- Process group ID (number)
7988 sess -- Session ID, i.e. process ID of session leader (number)
7989 ttname -- Controlling tty name (string)
7990 tpgid -- ID of foreground process group on the process's tty (number)
7991 minflt -- number of minor page faults (number)
7992 majflt -- number of major page faults (number)
7993 cminflt -- cumulative number of minor page faults (number)
7994 cmajflt -- cumulative number of major page faults (number)
7995 utime -- user time used by the process, in the (HIGH LOW USEC) format
7996 stime -- system time used by the process, in the (HIGH LOW USEC) format
7997 time -- sum of utime and stime, in the (HIGH LOW USEC) format
7998 cutime -- user time used by the process and its children, (HIGH LOW USEC)
7999 cstime -- system time used by the process and its children, (HIGH LOW USEC)
8000 ctime -- sum of cutime and cstime, in the (HIGH LOW USEC) format
8001 pri -- priority of the process (number)
8002 nice -- nice value of the process (number)
8003 thcount -- process thread count (number)
8004 start -- time the process started, in the (HIGH LOW USEC) format
8005 vsize -- virtual memory size of the process in KB's (number)
8006 rss -- resident set size of the process in KB's (number)
8007 etime -- elapsed time the process is running, in (HIGH LOW USEC) format
8008 pcpu -- percents of CPU time used by the process (floating-point number)
8009 pmem -- percents of total physical memory used by process's resident set
8010 (floating-point number)
8011 args -- command line which invoked the process (string). */)
8016 return system_process_attributes (pid
);
8027 QCtype
= intern_c_string (":type");
8028 staticpro (&QCtype
);
8029 QCname
= intern_c_string (":name");
8030 staticpro (&QCname
);
8031 QCtype
= intern_c_string (":type");
8032 staticpro (&QCtype
);
8033 QCname
= intern_c_string (":name");
8034 staticpro (&QCname
);
8035 Qeuid
= intern_c_string ("euid");
8037 Qegid
= intern_c_string ("egid");
8039 Quser
= intern_c_string ("user");
8041 Qgroup
= intern_c_string ("group");
8042 staticpro (&Qgroup
);
8043 Qcomm
= intern_c_string ("comm");
8045 Qstate
= intern_c_string ("state");
8046 staticpro (&Qstate
);
8047 Qppid
= intern_c_string ("ppid");
8049 Qpgrp
= intern_c_string ("pgrp");
8051 Qsess
= intern_c_string ("sess");
8053 Qttname
= intern_c_string ("ttname");
8054 staticpro (&Qttname
);
8055 Qtpgid
= intern_c_string ("tpgid");
8056 staticpro (&Qtpgid
);
8057 Qminflt
= intern_c_string ("minflt");
8058 staticpro (&Qminflt
);
8059 Qmajflt
= intern_c_string ("majflt");
8060 staticpro (&Qmajflt
);
8061 Qcminflt
= intern_c_string ("cminflt");
8062 staticpro (&Qcminflt
);
8063 Qcmajflt
= intern_c_string ("cmajflt");
8064 staticpro (&Qcmajflt
);
8065 Qutime
= intern_c_string ("utime");
8066 staticpro (&Qutime
);
8067 Qstime
= intern_c_string ("stime");
8068 staticpro (&Qstime
);
8069 Qtime
= intern_c_string ("time");
8071 Qcutime
= intern_c_string ("cutime");
8072 staticpro (&Qcutime
);
8073 Qcstime
= intern_c_string ("cstime");
8074 staticpro (&Qcstime
);
8075 Qctime
= intern_c_string ("ctime");
8076 staticpro (&Qctime
);
8077 Qpri
= intern_c_string ("pri");
8079 Qnice
= intern_c_string ("nice");
8081 Qthcount
= intern_c_string ("thcount");
8082 staticpro (&Qthcount
);
8083 Qstart
= intern_c_string ("start");
8084 staticpro (&Qstart
);
8085 Qvsize
= intern_c_string ("vsize");
8086 staticpro (&Qvsize
);
8087 Qrss
= intern_c_string ("rss");
8089 Qetime
= intern_c_string ("etime");
8090 staticpro (&Qetime
);
8091 Qpcpu
= intern_c_string ("pcpu");
8093 Qpmem
= intern_c_string ("pmem");
8095 Qargs
= intern_c_string ("args");
8098 defsubr (&Sget_buffer_process
);
8099 defsubr (&Sprocess_inherit_coding_system_flag
);
8100 defsubr (&Slist_system_processes
);
8101 defsubr (&Sprocess_attributes
);
8105 #endif /* not subprocesses */
8107 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
8108 (do not change this comment) */