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 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, or (at your option)
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; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
27 /* This file is split into two parts by the following preprocessor
28 conditional. The 'then' clause contains all of the support for
29 asynchronous subprocesses. The 'else' clause contains stub
30 versions of some of the asynchronous subprocess routines that are
31 often called elsewhere in Emacs, so we don't have to #ifdef the
32 sections that call them. */
40 #include <sys/types.h> /* some typedefs are used in sys/file.h */
43 #ifdef HAVE_INTTYPES_H
50 #if defined(WINDOWSNT) || defined(UNIX98_PTYS)
53 #endif /* not WINDOWSNT */
55 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
56 #include <sys/socket.h>
58 #include <netinet/in.h>
59 #include <arpa/inet.h>
60 #ifdef NEED_NET_ERRNO_H
61 #include <net/errno.h>
62 #endif /* NEED_NET_ERRNO_H */
64 /* Are local (unix) sockets supported? */
65 #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM)
66 #if !defined (AF_LOCAL) && defined (AF_UNIX)
67 #define AF_LOCAL AF_UNIX
70 #define HAVE_LOCAL_SOCKETS
74 #endif /* HAVE_SOCKETS */
76 /* TERM is a poor-man's SLIP, used on GNU/Linux. */
81 /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */
82 #ifdef HAVE_BROKEN_INET_ADDR
83 #define IN_ADDR struct in_addr
84 #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1)
86 #define IN_ADDR unsigned long
87 #define NUMERIC_ADDR_ERROR (numeric_addr == -1)
90 #if defined(BSD_SYSTEM) || defined(STRIDE)
91 #include <sys/ioctl.h>
92 #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5)
94 #endif /* HAVE_PTYS and no O_NDELAY */
95 #endif /* BSD_SYSTEM || STRIDE */
97 #ifdef BROKEN_O_NONBLOCK
99 #endif /* BROKEN_O_NONBLOCK */
105 /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */
107 #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H)
108 /* sys/ioctl.h may have been included already */
110 #include <sys/ioctl.h>
117 #include <sys/sysmacros.h> /* for "minor" */
118 #endif /* not IRIS */
121 #include <sys/wait.h>
125 #include <netinet/in.h>
126 #include <arpa/nameser.h>
136 #include "character.h"
140 #include "termhooks.h"
141 #include "termopts.h"
142 #include "commands.h"
143 #include "keyboard.h"
144 #include "blockinput.h"
145 #include "dispextern.h"
146 #include "composite.h"
149 Lisp_Object Qprocessp
;
150 Lisp_Object Qrun
, Qstop
, Qsignal
;
151 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
152 Lisp_Object Qlocal
, Qipv4
, Qdatagram
;
156 Lisp_Object QCname
, QCbuffer
, QChost
, QCservice
, QCtype
;
157 Lisp_Object QClocal
, QCremote
, QCcoding
;
158 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
159 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
160 Lisp_Object QCfilter_multibyte
;
161 Lisp_Object Qlast_nonmenu_event
;
162 /* QCfamily is declared and initialized in xfaces.c,
163 QCfilter in keyboard.c. */
164 extern Lisp_Object QCfamily
, QCfilter
;
166 /* Qexit is declared and initialized in eval.c. */
168 /* QCfamily is defined in xfaces.c. */
169 extern Lisp_Object QCfamily
;
170 /* QCfilter is defined in keyboard.c. */
171 extern Lisp_Object QCfilter
;
173 /* a process object is a network connection when its childp field is neither
174 Qt nor Qnil but is instead a property list (KEY VAL ...). */
177 #define NETCONN_P(p) (CONSP (XPROCESS (p)->childp))
178 #define NETCONN1_P(p) (CONSP ((p)->childp))
180 #define NETCONN_P(p) 0
181 #define NETCONN1_P(p) 0
182 #endif /* HAVE_SOCKETS */
184 /* Define first descriptor number available for subprocesses. */
186 #define FIRST_PROC_DESC 1
188 #define FIRST_PROC_DESC 3
191 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
194 #if !defined (SIGCHLD) && defined (SIGCLD)
195 #define SIGCHLD SIGCLD
198 #include "syssignal.h"
202 extern char *get_operating_system_release ();
208 extern char *sys_errlist
[];
215 /* t means use pty, nil means use a pipe,
216 maybe other values to come. */
217 static Lisp_Object Vprocess_connection_type
;
221 #include <sys/socket.h>
225 /* These next two vars are non-static since sysdep.c uses them in the
226 emulation of `select'. */
227 /* Number of events of change of status of a process. */
229 /* Number of events for which the user or sentinel has been notified. */
232 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
234 #ifdef BROKEN_NON_BLOCKING_CONNECT
235 #undef NON_BLOCKING_CONNECT
237 #ifndef NON_BLOCKING_CONNECT
240 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
241 #if defined (O_NONBLOCK) || defined (O_NDELAY)
242 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
243 #define NON_BLOCKING_CONNECT
244 #endif /* EWOULDBLOCK || EINPROGRESS */
245 #endif /* O_NONBLOCK || O_NDELAY */
246 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
247 #endif /* HAVE_SELECT */
248 #endif /* HAVE_SOCKETS */
249 #endif /* NON_BLOCKING_CONNECT */
250 #endif /* BROKEN_NON_BLOCKING_CONNECT */
252 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
253 this system. We need to read full packets, so we need a
254 "non-destructive" select. So we require either native select,
255 or emulation of select using FIONREAD. */
257 #ifdef BROKEN_DATAGRAM_SOCKETS
258 #undef DATAGRAM_SOCKETS
260 #ifndef DATAGRAM_SOCKETS
262 #if defined (HAVE_SELECT) || defined (FIONREAD)
263 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
264 #define DATAGRAM_SOCKETS
265 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
266 #endif /* HAVE_SELECT || FIONREAD */
267 #endif /* HAVE_SOCKETS */
268 #endif /* DATAGRAM_SOCKETS */
269 #endif /* BROKEN_DATAGRAM_SOCKETS */
272 #undef NON_BLOCKING_CONNECT
273 #undef DATAGRAM_SOCKETS
276 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
277 #ifdef EMACS_HAS_USECS
278 #define ADAPTIVE_READ_BUFFERING
282 #ifdef ADAPTIVE_READ_BUFFERING
283 #define READ_OUTPUT_DELAY_INCREMENT 10000
284 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
285 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
287 /* Number of processes which have a non-zero read_output_delay,
288 and therefore might be delayed for adaptive read buffering. */
290 static int process_output_delay_count
;
292 /* Non-zero if any process has non-nil read_output_skip. */
294 static int process_output_skip
;
296 /* Non-nil means to delay reading process output to improve buffering.
297 A value of t means that delay is reset after each send, any other
298 non-nil value does not reset the delay. A value of nil disables
299 adaptive read buffering completely. */
300 static Lisp_Object Vprocess_adaptive_read_buffering
;
302 #define process_output_delay_count 0
306 #include "sysselect.h"
308 static int keyboard_bit_set
P_ ((SELECT_TYPE
*));
309 static void deactivate_process
P_ ((Lisp_Object
));
310 static void status_notify
P_ ((struct Lisp_Process
*));
311 static int read_process_output
P_ ((Lisp_Object
, int));
313 /* If we support a window system, turn on the code to poll periodically
314 to detect C-g. It isn't actually used when doing interrupt input. */
315 #ifdef HAVE_WINDOW_SYSTEM
316 #define POLL_FOR_INPUT
319 static Lisp_Object
get_process ();
320 static void exec_sentinel ();
322 extern EMACS_TIME
timer_check ();
323 extern int timers_run
;
325 /* Mask of bits indicating the descriptors that we wait for input on. */
327 static SELECT_TYPE input_wait_mask
;
329 /* Mask that excludes keyboard input descriptor(s). */
331 static SELECT_TYPE non_keyboard_wait_mask
;
333 /* Mask that excludes process input descriptor(s). */
335 static SELECT_TYPE non_process_wait_mask
;
337 /* Mask for the gpm mouse input descriptor. */
339 static SELECT_TYPE gpm_wait_mask
;
341 #ifdef NON_BLOCKING_CONNECT
342 /* Mask of bits indicating the descriptors that we wait for connect to
343 complete on. Once they complete, they are removed from this mask
344 and added to the input_wait_mask and non_keyboard_wait_mask. */
346 static SELECT_TYPE connect_wait_mask
;
348 /* Number of bits set in connect_wait_mask. */
349 static int num_pending_connects
;
351 #define IF_NON_BLOCKING_CONNECT(s) s
353 #define IF_NON_BLOCKING_CONNECT(s)
356 /* The largest descriptor currently in use for a process object. */
357 static int max_process_desc
;
359 /* The largest descriptor currently in use for keyboard input. */
360 static int max_keyboard_desc
;
362 /* The largest descriptor currently in use for gpm mouse input. */
363 static int max_gpm_desc
;
365 /* Nonzero means delete a process right away if it exits. */
366 static int delete_exited_processes
;
368 /* Indexed by descriptor, gives the process (if any) for that descriptor */
369 Lisp_Object chan_process
[MAXDESC
];
371 /* Alist of elements (NAME . PROCESS) */
372 Lisp_Object Vprocess_alist
;
374 /* Buffered-ahead input char from process, indexed by channel.
375 -1 means empty (no char is buffered).
376 Used on sys V where the only way to tell if there is any
377 output from the process is to read at least one char.
378 Always -1 on systems that support FIONREAD. */
380 /* Don't make static; need to access externally. */
381 int proc_buffered_char
[MAXDESC
];
383 /* Table of `struct coding-system' for each process. */
384 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
385 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
387 #ifdef DATAGRAM_SOCKETS
388 /* Table of `partner address' for datagram sockets. */
389 struct sockaddr_and_len
{
392 } datagram_address
[MAXDESC
];
393 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
394 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XPROCESS (proc)->infd].sa != 0)
396 #define DATAGRAM_CHAN_P(chan) (0)
397 #define DATAGRAM_CONN_P(proc) (0)
400 /* Maximum number of bytes to send to a pty without an eof. */
401 static int pty_max_bytes
;
403 /* Nonzero means don't run process sentinels. This is used
405 int inhibit_sentinels
;
411 /* The file name of the pty opened by allocate_pty. */
413 static char pty_name
[24];
416 /* Compute the Lisp form of the process status, p->status, from
417 the numeric status that was returned by `wait'. */
419 static Lisp_Object
status_convert ();
423 struct Lisp_Process
*p
;
425 union { int i
; WAITTYPE wt
; } u
;
426 eassert (p
->raw_status_new
);
428 p
->status
= status_convert (u
.wt
);
429 p
->raw_status_new
= 0;
432 /* Convert a process status word in Unix format to
433 the list that we use internally. */
440 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
441 else if (WIFEXITED (w
))
442 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
443 WCOREDUMP (w
) ? Qt
: Qnil
));
444 else if (WIFSIGNALED (w
))
445 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
446 WCOREDUMP (w
) ? Qt
: Qnil
));
451 /* Given a status-list, extract the three pieces of information
452 and store them individually through the three pointers. */
455 decode_status (l
, symbol
, code
, coredump
)
473 *code
= XFASTINT (XCAR (tem
));
475 *coredump
= !NILP (tem
);
479 /* Return a string describing a process status list. */
483 struct Lisp_Process
*p
;
485 Lisp_Object status
= p
->status
;
488 Lisp_Object string
, string2
;
490 decode_status (status
, &symbol
, &code
, &coredump
);
492 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
495 synchronize_system_messages_locale ();
496 signame
= strsignal (code
);
499 string
= build_string (signame
);
500 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
501 SSET (string
, 0, DOWNCASE (SREF (string
, 0)));
502 return concat2 (string
, string2
);
504 else if (EQ (symbol
, Qexit
))
507 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
509 return build_string ("finished\n");
510 string
= Fnumber_to_string (make_number (code
));
511 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
512 return concat3 (build_string ("exited abnormally with code "),
515 else if (EQ (symbol
, Qfailed
))
517 string
= Fnumber_to_string (make_number (code
));
518 string2
= build_string ("\n");
519 return concat3 (build_string ("failed with code "),
523 return Fcopy_sequence (Fsymbol_name (symbol
));
528 /* Open an available pty, returning a file descriptor.
529 Return -1 on failure.
530 The file name of the terminal corresponding to the pty
531 is left in the variable pty_name. */
542 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
543 for (i
= 0; i
< 16; i
++)
546 struct stat stb
; /* Used in some PTY_OPEN. */
547 #ifdef PTY_NAME_SPRINTF
550 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
551 #endif /* no PTY_NAME_SPRINTF */
555 #else /* no PTY_OPEN */
558 /* Unusual IRIS code */
559 *ptyv
= emacs_open ("/dev/ptc", O_RDWR
| O_NDELAY
, 0);
562 if (fstat (fd
, &stb
) < 0)
564 # else /* not IRIS */
565 { /* Some systems name their pseudoterminals so that there are gaps in
566 the usual sequence - for example, on HP9000/S700 systems, there
567 are no pseudoterminals with names ending in 'f'. So we wait for
568 three failures in a row before deciding that we've reached the
570 int failed_count
= 0;
572 if (stat (pty_name
, &stb
) < 0)
575 if (failed_count
>= 3)
582 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
584 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
586 # endif /* not IRIS */
588 #endif /* no PTY_OPEN */
592 /* check to make certain that both sides are available
593 this avoids a nasty yet stupid bug in rlogins */
594 #ifdef PTY_TTY_NAME_SPRINTF
597 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
598 #endif /* no PTY_TTY_NAME_SPRINTF */
600 if (access (pty_name
, 6) != 0)
603 # if !defined(IRIS) && !defined(__sgi)
609 #endif /* not UNIPLUS */
616 #endif /* HAVE_PTYS */
622 register Lisp_Object val
, tem
, name1
;
623 register struct Lisp_Process
*p
;
627 p
= allocate_process ();
634 p
->raw_status_new
= 0;
636 p
->mark
= Fmake_marker ();
638 #ifdef ADAPTIVE_READ_BUFFERING
639 p
->adaptive_read_buffering
= 0;
640 p
->read_output_delay
= 0;
641 p
->read_output_skip
= 0;
644 /* If name is already in use, modify it until it is unused. */
649 tem
= Fget_process (name1
);
650 if (NILP (tem
)) break;
651 sprintf (suffix
, "<%d>", i
);
652 name1
= concat2 (name
, build_string (suffix
));
656 XSETPROCESS (val
, p
);
657 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
662 remove_process (proc
)
663 register Lisp_Object proc
;
665 register Lisp_Object pair
;
667 pair
= Frassq (proc
, Vprocess_alist
);
668 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
670 deactivate_process (proc
);
673 /* Setup coding systems of PROCESS. */
676 setup_process_coding_systems (process
)
679 struct Lisp_Process
*p
= XPROCESS (process
);
681 int outch
= p
->outfd
;
682 Lisp_Object coding_system
;
684 if (inch
< 0 || outch
< 0)
687 if (!proc_decode_coding_system
[inch
])
688 proc_decode_coding_system
[inch
]
689 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
690 coding_system
= p
->decode_coding_system
;
691 if (! NILP (p
->filter
))
693 if (!p
->filter_multibyte
)
694 coding_system
= raw_text_coding_system (coding_system
);
696 else if (BUFFERP (p
->buffer
))
698 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
699 coding_system
= raw_text_coding_system (coding_system
);
701 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
703 if (!proc_encode_coding_system
[outch
])
704 proc_encode_coding_system
[outch
]
705 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
706 setup_coding_system (p
->encode_coding_system
,
707 proc_encode_coding_system
[outch
]);
710 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
711 doc
: /* Return t if OBJECT is a process. */)
715 return PROCESSP (object
) ? Qt
: Qnil
;
718 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
719 doc
: /* Return the process named NAME, or nil if there is none. */)
721 register Lisp_Object name
;
726 return Fcdr (Fassoc (name
, Vprocess_alist
));
729 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
730 doc
: /* Return the (or a) process associated with BUFFER.
731 BUFFER may be a buffer or the name of one. */)
733 register Lisp_Object buffer
;
735 register Lisp_Object buf
, tail
, proc
;
737 if (NILP (buffer
)) return Qnil
;
738 buf
= Fget_buffer (buffer
);
739 if (NILP (buf
)) return Qnil
;
741 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
743 proc
= Fcdr (XCAR (tail
));
744 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
750 /* This is how commands for the user decode process arguments. It
751 accepts a process, a process name, a buffer, a buffer name, or nil.
752 Buffers denote the first process in the buffer, and nil denotes the
757 register Lisp_Object name
;
759 register Lisp_Object proc
, obj
;
762 obj
= Fget_process (name
);
764 obj
= Fget_buffer (name
);
766 error ("Process %s does not exist", SDATA (name
));
768 else if (NILP (name
))
769 obj
= Fcurrent_buffer ();
773 /* Now obj should be either a buffer object or a process object.
777 proc
= Fget_buffer_process (obj
);
779 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
791 /* Fdelete_process promises to immediately forget about the process, but in
792 reality, Emacs needs to remember those processes until they have been
793 treated by sigchld_handler; otherwise this handler would consider the
794 process as being synchronous and say that the synchronous process is
796 static Lisp_Object deleted_pid_list
;
799 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
800 doc
: /* Delete PROCESS: kill it and forget about it immediately.
801 PROCESS may be a process, a buffer, the name of a process or buffer, or
802 nil, indicating the current buffer's process. */)
804 register Lisp_Object process
;
806 register struct Lisp_Process
*p
;
808 process
= get_process (process
);
809 p
= XPROCESS (process
);
811 p
->raw_status_new
= 0;
814 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
815 p
->tick
= ++process_tick
;
818 else if (p
->infd
>= 0)
822 /* Assignment to EMACS_INT stops GCC whining about limited range
824 EMACS_INT pid
= p
->pid
;
826 /* No problem storing the pid here, as it is still in Vprocess_alist. */
827 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
828 /* GC treated elements set to nil. */
829 Fdelq (Qnil
, deleted_pid_list
));
830 /* If the process has already signaled, remove it from the list. */
831 if (p
->raw_status_new
)
834 if (CONSP (p
->status
))
835 symbol
= XCAR (p
->status
);
836 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
838 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
842 Fkill_process (process
, Qnil
);
843 /* Do this now, since remove_process will make sigchld_handler do nothing. */
845 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
846 p
->tick
= ++process_tick
;
850 remove_process (process
);
854 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
855 doc
: /* Return the status of PROCESS.
856 The returned value is one of the following symbols:
857 run -- for a process that is running.
858 stop -- for a process stopped but continuable.
859 exit -- for a process that has exited.
860 signal -- for a process that has got a fatal signal.
861 open -- for a network stream connection that is open.
862 listen -- for a network stream server that is listening.
863 closed -- for a network stream connection that is closed.
864 connect -- when waiting for a non-blocking connection to complete.
865 failed -- when a non-blocking connection has failed.
866 nil -- if arg is a process name and no such process exists.
867 PROCESS may be a process, a buffer, the name of a process, or
868 nil, indicating the current buffer's process. */)
870 register Lisp_Object process
;
872 register struct Lisp_Process
*p
;
873 register Lisp_Object status
;
875 if (STRINGP (process
))
876 process
= Fget_process (process
);
878 process
= get_process (process
);
883 p
= XPROCESS (process
);
884 if (p
->raw_status_new
)
888 status
= XCAR (status
);
891 if (EQ (status
, Qexit
))
893 else if (EQ (p
->command
, Qt
))
895 else if (EQ (status
, Qrun
))
901 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
903 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
904 If PROCESS has not yet exited or died, return 0. */)
906 register Lisp_Object process
;
908 CHECK_PROCESS (process
);
909 if (XPROCESS (process
)->raw_status_new
)
910 update_status (XPROCESS (process
));
911 if (CONSP (XPROCESS (process
)->status
))
912 return XCAR (XCDR (XPROCESS (process
)->status
));
913 return make_number (0);
916 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
917 doc
: /* Return the process id of PROCESS.
918 This is the pid of the external process which PROCESS uses or talks to.
919 For a network connection, this value is nil. */)
921 register Lisp_Object process
;
923 /* Assignment to EMACS_INT stops GCC whining about limited range of
927 CHECK_PROCESS (process
);
928 pid
= XPROCESS (process
)->pid
;
929 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
932 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
933 doc
: /* Return the name of PROCESS, as a string.
934 This is the name of the program invoked in PROCESS,
935 possibly modified to make it unique among process names. */)
937 register Lisp_Object process
;
939 CHECK_PROCESS (process
);
940 return XPROCESS (process
)->name
;
943 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
944 doc
: /* Return the command that was executed to start PROCESS.
945 This is a list of strings, the first string being the program executed
946 and the rest of the strings being the arguments given to it.
947 For a non-child channel, this is nil. */)
949 register Lisp_Object process
;
951 CHECK_PROCESS (process
);
952 return XPROCESS (process
)->command
;
955 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
956 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
957 This is the terminal that the process itself reads and writes on,
958 not the name of the pty that Emacs uses to talk with that terminal. */)
960 register Lisp_Object process
;
962 CHECK_PROCESS (process
);
963 return XPROCESS (process
)->tty_name
;
966 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
968 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
970 register Lisp_Object process
, buffer
;
972 struct Lisp_Process
*p
;
974 CHECK_PROCESS (process
);
976 CHECK_BUFFER (buffer
);
977 p
= XPROCESS (process
);
980 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
981 setup_process_coding_systems (process
);
985 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
987 doc
: /* Return the buffer PROCESS is associated with.
988 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
990 register Lisp_Object process
;
992 CHECK_PROCESS (process
);
993 return XPROCESS (process
)->buffer
;
996 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
998 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1000 register Lisp_Object process
;
1002 CHECK_PROCESS (process
);
1003 return XPROCESS (process
)->mark
;
1006 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1008 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
1009 A value of t means stop accepting output from the process.
1011 When a process has a filter, its buffer is not used for output.
1012 Instead, each time it does output, the entire string of output is
1013 passed to the filter.
1015 The filter gets two arguments: the process and the string of output.
1016 The string argument is normally a multibyte string, except:
1017 - if the process' input coding system is no-conversion or raw-text,
1018 it is a unibyte string (the non-converted input), or else
1019 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1020 string (the result of converting the decoded input multibyte
1021 string to unibyte with `string-make-unibyte'). */)
1023 register Lisp_Object process
, filter
;
1025 struct Lisp_Process
*p
;
1027 CHECK_PROCESS (process
);
1028 p
= XPROCESS (process
);
1030 /* Don't signal an error if the process' input file descriptor
1031 is closed. This could make debugging Lisp more difficult,
1032 for example when doing something like
1034 (setq process (start-process ...))
1036 (set-process-filter process ...) */
1040 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1042 FD_CLR (p
->infd
, &input_wait_mask
);
1043 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1045 else if (EQ (p
->filter
, Qt
)
1046 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
1048 FD_SET (p
->infd
, &input_wait_mask
);
1049 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1055 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1056 setup_process_coding_systems (process
);
1060 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1062 doc
: /* Returns the filter function of PROCESS; nil if none.
1063 See `set-process-filter' for more info on filter functions. */)
1065 register Lisp_Object process
;
1067 CHECK_PROCESS (process
);
1068 return XPROCESS (process
)->filter
;
1071 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1073 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1074 The sentinel is called as a function when the process changes state.
1075 It gets two arguments: the process, and a string describing the change. */)
1077 register Lisp_Object process
, sentinel
;
1079 struct Lisp_Process
*p
;
1081 CHECK_PROCESS (process
);
1082 p
= XPROCESS (process
);
1084 p
->sentinel
= sentinel
;
1086 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1090 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1092 doc
: /* Return the sentinel of PROCESS; nil if none.
1093 See `set-process-sentinel' for more info on sentinels. */)
1095 register Lisp_Object process
;
1097 CHECK_PROCESS (process
);
1098 return XPROCESS (process
)->sentinel
;
1101 DEFUN ("set-process-window-size", Fset_process_window_size
,
1102 Sset_process_window_size
, 3, 3, 0,
1103 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1104 (process
, height
, width
)
1105 register Lisp_Object process
, height
, width
;
1107 CHECK_PROCESS (process
);
1108 CHECK_NATNUM (height
);
1109 CHECK_NATNUM (width
);
1111 if (XPROCESS (process
)->infd
< 0
1112 || set_window_size (XPROCESS (process
)->infd
,
1113 XINT (height
), XINT (width
)) <= 0)
1119 DEFUN ("set-process-inherit-coding-system-flag",
1120 Fset_process_inherit_coding_system_flag
,
1121 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1122 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1123 If the second argument FLAG is non-nil, then the variable
1124 `buffer-file-coding-system' of the buffer associated with PROCESS
1125 will be bound to the value of the coding system used to decode
1128 This is useful when the coding system specified for the process buffer
1129 leaves either the character code conversion or the end-of-line conversion
1130 unspecified, or if the coding system used to decode the process output
1131 is more appropriate for saving the process buffer.
1133 Binding the variable `inherit-process-coding-system' to non-nil before
1134 starting the process is an alternative way of setting the inherit flag
1135 for the process which will run. */)
1137 register Lisp_Object process
, flag
;
1139 CHECK_PROCESS (process
);
1140 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1144 DEFUN ("process-inherit-coding-system-flag",
1145 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1147 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1148 If this flag is t, `buffer-file-coding-system' of the buffer
1149 associated with PROCESS will inherit the coding system used to decode
1150 the process output. */)
1152 register Lisp_Object process
;
1154 CHECK_PROCESS (process
);
1155 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
1158 DEFUN ("set-process-query-on-exit-flag",
1159 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1161 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1162 If the second argument FLAG is non-nil, Emacs will query the user before
1163 exiting if PROCESS is running. */)
1165 register Lisp_Object process
, flag
;
1167 CHECK_PROCESS (process
);
1168 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1172 DEFUN ("process-query-on-exit-flag",
1173 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1175 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1177 register Lisp_Object process
;
1179 CHECK_PROCESS (process
);
1180 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1183 #ifdef DATAGRAM_SOCKETS
1184 Lisp_Object
Fprocess_datagram_address ();
1187 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1189 doc
: /* Return the contact info of PROCESS; t for a real child.
1190 For a net connection, the value depends on the optional KEY arg.
1191 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1192 if KEY is t, the complete contact information for the connection is
1193 returned, else the specific value for the keyword KEY is returned.
1194 See `make-network-process' for a list of keywords. */)
1196 register Lisp_Object process
, key
;
1198 Lisp_Object contact
;
1200 CHECK_PROCESS (process
);
1201 contact
= XPROCESS (process
)->childp
;
1203 #ifdef DATAGRAM_SOCKETS
1204 if (DATAGRAM_CONN_P (process
)
1205 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1206 contact
= Fplist_put (contact
, QCremote
,
1207 Fprocess_datagram_address (process
));
1210 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1213 return Fcons (Fplist_get (contact
, QChost
),
1214 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1215 return Fplist_get (contact
, key
);
1218 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1220 doc
: /* Return the plist of PROCESS. */)
1222 register Lisp_Object process
;
1224 CHECK_PROCESS (process
);
1225 return XPROCESS (process
)->plist
;
1228 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1230 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1232 register Lisp_Object process
, plist
;
1234 CHECK_PROCESS (process
);
1237 XPROCESS (process
)->plist
= plist
;
1241 #if 0 /* Turned off because we don't currently record this info
1242 in the process. Perhaps add it. */
1243 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1244 doc
: /* Return the connection type of PROCESS.
1245 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1246 a socket connection. */)
1248 Lisp_Object process
;
1250 return XPROCESS (process
)->type
;
1255 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1257 doc
: /* Convert network ADDRESS from internal format to a string.
1258 A 4 or 5 element vector represents an IPv4 address (with port number).
1259 An 8 or 9 element vector represents an IPv6 address (with port number).
1260 If optional second argument OMIT-PORT is non-nil, don't include a port
1261 number in the string, even when present in ADDRESS.
1262 Returns nil if format of ADDRESS is invalid. */)
1263 (address
, omit_port
)
1264 Lisp_Object address
, omit_port
;
1269 if (STRINGP (address
)) /* AF_LOCAL */
1272 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1274 register struct Lisp_Vector
*p
= XVECTOR (address
);
1275 Lisp_Object args
[10];
1278 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1280 args
[0] = build_string ("%d.%d.%d.%d");
1283 else if (p
->size
== 5)
1285 args
[0] = build_string ("%d.%d.%d.%d:%d");
1288 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1290 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1293 else if (p
->size
== 9)
1295 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1301 for (i
= 0; i
< nargs
; i
++)
1303 EMACS_INT element
= XINT (p
->contents
[i
]);
1305 if (element
< 0 || element
> 65535)
1308 if (nargs
<= 5 /* IPv4 */
1309 && i
< 4 /* host, not port */
1313 args
[i
+1] = p
->contents
[i
];
1316 return Fformat (nargs
+1, args
);
1319 if (CONSP (address
))
1321 Lisp_Object args
[2];
1322 args
[0] = build_string ("<Family %d>");
1323 args
[1] = Fcar (address
);
1324 return Fformat (2, args
);
1332 list_processes_1 (query_only
)
1333 Lisp_Object query_only
;
1335 register Lisp_Object tail
, tem
;
1336 Lisp_Object proc
, minspace
, tem1
;
1337 register struct Lisp_Process
*p
;
1339 int w_proc
, w_buffer
, w_tty
;
1341 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1343 w_proc
= 4; /* Proc */
1344 w_buffer
= 6; /* Buffer */
1345 w_tty
= 0; /* Omit if no ttys */
1347 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1351 proc
= Fcdr (XCAR (tail
));
1352 p
= XPROCESS (proc
);
1353 if (NILP (p
->childp
))
1355 if (!NILP (query_only
) && p
->kill_without_query
)
1357 if (STRINGP (p
->name
)
1358 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1360 if (!NILP (p
->buffer
))
1362 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1363 w_buffer
= 8; /* (Killed) */
1364 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1367 if (STRINGP (p
->tty_name
)
1368 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1372 XSETFASTINT (i_status
, w_proc
+ 1);
1373 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1376 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1377 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1380 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1383 XSETFASTINT (minspace
, 1);
1385 set_buffer_internal (XBUFFER (Vstandard_output
));
1386 current_buffer
->undo_list
= Qt
;
1388 current_buffer
->truncate_lines
= Qt
;
1390 write_string ("Proc", -1);
1391 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1392 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1395 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1397 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1398 write_string ("\n", -1);
1400 write_string ("----", -1);
1401 Findent_to (i_status
, minspace
); write_string ("------", -1);
1402 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1405 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1407 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1408 write_string ("\n", -1);
1410 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1414 proc
= Fcdr (XCAR (tail
));
1415 p
= XPROCESS (proc
);
1416 if (NILP (p
->childp
))
1418 if (!NILP (query_only
) && p
->kill_without_query
)
1421 Finsert (1, &p
->name
);
1422 Findent_to (i_status
, minspace
);
1424 if (p
->raw_status_new
)
1427 if (CONSP (p
->status
))
1428 symbol
= XCAR (p
->status
);
1430 if (EQ (symbol
, Qsignal
))
1433 tem
= Fcar (Fcdr (p
->status
));
1435 if (XINT (tem
) < NSIG
)
1436 write_string (sys_errlist
[XINT (tem
)], -1);
1439 Fprinc (symbol
, Qnil
);
1441 else if (NETCONN1_P (p
))
1443 if (EQ (symbol
, Qexit
))
1444 write_string ("closed", -1);
1445 else if (EQ (p
->command
, Qt
))
1446 write_string ("stopped", -1);
1447 else if (EQ (symbol
, Qrun
))
1448 write_string ("open", -1);
1450 Fprinc (symbol
, Qnil
);
1453 Fprinc (symbol
, Qnil
);
1455 if (EQ (symbol
, Qexit
))
1458 tem
= Fcar (Fcdr (p
->status
));
1461 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1462 write_string (tembuf
, -1);
1466 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1469 Findent_to (i_buffer
, minspace
);
1470 if (NILP (p
->buffer
))
1471 insert_string ("(none)");
1472 else if (NILP (XBUFFER (p
->buffer
)->name
))
1473 insert_string ("(Killed)");
1475 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1479 Findent_to (i_tty
, minspace
);
1480 if (STRINGP (p
->tty_name
))
1481 Finsert (1, &p
->tty_name
);
1484 Findent_to (i_command
, minspace
);
1486 if (EQ (p
->status
, Qlisten
))
1488 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1489 if (INTEGERP (port
))
1490 port
= Fnumber_to_string (port
);
1492 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1493 sprintf (tembuf
, "(network %s server on %s)\n",
1494 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1495 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1496 insert_string (tembuf
);
1498 else if (NETCONN1_P (p
))
1500 /* For a local socket, there is no host name,
1501 so display service instead. */
1502 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1503 if (!STRINGP (host
))
1505 host
= Fplist_get (p
->childp
, QCservice
);
1506 if (INTEGERP (host
))
1507 host
= Fnumber_to_string (host
);
1510 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1511 sprintf (tembuf
, "(network %s connection to %s)\n",
1512 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1513 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1514 insert_string (tembuf
);
1526 insert_string (" ");
1528 insert_string ("\n");
1532 status_notify (NULL
);
1536 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1537 doc
: /* Display a list of all processes.
1538 If optional argument QUERY-ONLY is non-nil, only processes with
1539 the query-on-exit flag set will be listed.
1540 Any process listed as exited or signaled is actually eliminated
1541 after the listing is made. */)
1543 Lisp_Object query_only
;
1545 internal_with_output_to_temp_buffer ("*Process List*",
1546 list_processes_1
, query_only
);
1550 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1551 doc
: /* Return a list of all processes. */)
1554 return Fmapcar (Qcdr
, Vprocess_alist
);
1557 /* Starting asynchronous inferior processes. */
1559 static Lisp_Object
start_process_unwind ();
1561 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1562 doc
: /* Start a program in a subprocess. Return the process object for it.
1563 NAME is name for process. It is modified if necessary to make it unique.
1564 BUFFER is the buffer (or buffer name) to associate with the process.
1566 Process output (both standard output and standard error streams) goes
1567 at end of BUFFER, unless you specify an output stream or filter
1568 function to handle the output. BUFFER may also be nil, meaning that
1569 this process is not associated with any buffer.
1571 PROGRAM is the program file name. It is searched for in PATH.
1572 Remaining arguments are strings to give program as arguments.
1574 If you want to separate standard output from standard error, invoke
1575 the command through a shell and redirect one of them using the shell
1578 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1581 register Lisp_Object
*args
;
1583 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1585 register unsigned char *new_argv
;
1588 register unsigned char **new_argv
;
1591 int count
= SPECPDL_INDEX ();
1595 buffer
= Fget_buffer_create (buffer
);
1597 /* Make sure that the child will be able to chdir to the current
1598 buffer's current directory, or its unhandled equivalent. We
1599 can't just have the child check for an error when it does the
1600 chdir, since it's in a vfork.
1602 We have to GCPRO around this because Fexpand_file_name and
1603 Funhandled_file_name_directory might call a file name handling
1604 function. The argument list is protected by the caller, so all
1605 we really have to worry about is buffer. */
1607 struct gcpro gcpro1
, gcpro2
;
1609 current_dir
= current_buffer
->directory
;
1611 GCPRO2 (buffer
, current_dir
);
1614 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1616 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1617 report_file_error ("Setting current directory",
1618 Fcons (current_buffer
->directory
, Qnil
));
1624 CHECK_STRING (name
);
1628 CHECK_STRING (program
);
1630 proc
= make_process (name
);
1631 /* If an error occurs and we can't start the process, we want to
1632 remove it from the process list. This means that each error
1633 check in create_process doesn't need to call remove_process
1634 itself; it's all taken care of here. */
1635 record_unwind_protect (start_process_unwind
, proc
);
1637 XPROCESS (proc
)->childp
= Qt
;
1638 XPROCESS (proc
)->plist
= Qnil
;
1639 XPROCESS (proc
)->buffer
= buffer
;
1640 XPROCESS (proc
)->sentinel
= Qnil
;
1641 XPROCESS (proc
)->filter
= Qnil
;
1642 XPROCESS (proc
)->filter_multibyte
1643 = !NILP (buffer_defaults
.enable_multibyte_characters
);
1644 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1646 #ifdef ADAPTIVE_READ_BUFFERING
1647 XPROCESS (proc
)->adaptive_read_buffering
1648 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1649 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1652 /* Make the process marker point into the process buffer (if any). */
1653 if (BUFFERP (buffer
))
1654 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1655 BUF_ZV (XBUFFER (buffer
)),
1656 BUF_ZV_BYTE (XBUFFER (buffer
)));
1659 /* Decide coding systems for communicating with the process. Here
1660 we don't setup the structure coding_system nor pay attention to
1661 unibyte mode. They are done in create_process. */
1663 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1664 Lisp_Object coding_systems
= Qt
;
1665 Lisp_Object val
, *args2
;
1666 struct gcpro gcpro1
, gcpro2
;
1668 val
= Vcoding_system_for_read
;
1671 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1672 args2
[0] = Qstart_process
;
1673 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1674 GCPRO2 (proc
, current_dir
);
1675 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1677 if (CONSP (coding_systems
))
1678 val
= XCAR (coding_systems
);
1679 else if (CONSP (Vdefault_process_coding_system
))
1680 val
= XCAR (Vdefault_process_coding_system
);
1682 XPROCESS (proc
)->decode_coding_system
= val
;
1684 val
= Vcoding_system_for_write
;
1687 if (EQ (coding_systems
, Qt
))
1689 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1690 args2
[0] = Qstart_process
;
1691 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1692 GCPRO2 (proc
, current_dir
);
1693 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1696 if (CONSP (coding_systems
))
1697 val
= XCDR (coding_systems
);
1698 else if (CONSP (Vdefault_process_coding_system
))
1699 val
= XCDR (Vdefault_process_coding_system
);
1701 XPROCESS (proc
)->encode_coding_system
= val
;
1705 /* Make a one member argv with all args concatenated
1706 together separated by a blank. */
1707 len
= SBYTES (program
) + 2;
1708 for (i
= 3; i
< nargs
; i
++)
1712 len
+= SBYTES (tem
) + 1; /* count the blank */
1714 new_argv
= (unsigned char *) alloca (len
);
1715 strcpy (new_argv
, SDATA (program
));
1716 for (i
= 3; i
< nargs
; i
++)
1720 strcat (new_argv
, " ");
1721 strcat (new_argv
, SDATA (tem
));
1723 /* Need to add code here to check for program existence on VMS */
1726 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1728 /* If program file name is not absolute, search our path for it.
1729 Put the name we will really use in TEM. */
1730 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1731 && !(SCHARS (program
) > 1
1732 && IS_DEVICE_SEP (SREF (program
, 1))))
1734 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1737 GCPRO4 (name
, program
, buffer
, current_dir
);
1738 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1741 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1742 tem
= Fexpand_file_name (tem
, Qnil
);
1746 if (!NILP (Ffile_directory_p (program
)))
1747 error ("Specified program for new process is a directory");
1751 /* If program file name starts with /: for quoting a magic name,
1753 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1754 && SREF (tem
, 1) == ':')
1755 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1757 /* Encode the file name and put it in NEW_ARGV.
1758 That's where the child will use it to execute the program. */
1759 tem
= ENCODE_FILE (tem
);
1760 new_argv
[0] = SDATA (tem
);
1762 /* Here we encode arguments by the coding system used for sending
1763 data to the process. We don't support using different coding
1764 systems for encoding arguments and for encoding data sent to the
1767 for (i
= 3; i
< nargs
; i
++)
1771 if (STRING_MULTIBYTE (tem
))
1772 tem
= (code_convert_string_norecord
1773 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1774 new_argv
[i
- 2] = SDATA (tem
);
1776 new_argv
[i
- 2] = 0;
1777 #endif /* not VMS */
1779 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1780 XPROCESS (proc
)->decoding_carryover
= 0;
1781 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1783 XPROCESS (proc
)->inherit_coding_system_flag
1784 = !(NILP (buffer
) || !inherit_process_coding_system
);
1786 create_process (proc
, (char **) new_argv
, current_dir
);
1788 return unbind_to (count
, proc
);
1791 /* This function is the unwind_protect form for Fstart_process. If
1792 PROC doesn't have its pid set, then we know someone has signaled
1793 an error and the process wasn't started successfully, so we should
1794 remove it from the process list. */
1796 start_process_unwind (proc
)
1799 if (!PROCESSP (proc
))
1802 /* Was PROC started successfully? */
1803 if (XPROCESS (proc
)->pid
<= 0)
1804 remove_process (proc
);
1810 create_process_1 (timer
)
1811 struct atimer
*timer
;
1813 /* Nothing to do. */
1817 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1820 /* Mimic blocking of signals on system V, which doesn't really have it. */
1822 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1823 int sigchld_deferred
;
1826 create_process_sigchld ()
1828 signal (SIGCHLD
, create_process_sigchld
);
1830 sigchld_deferred
= 1;
1836 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1838 create_process (process
, new_argv
, current_dir
)
1839 Lisp_Object process
;
1841 Lisp_Object current_dir
;
1843 int inchannel
, outchannel
;
1846 #ifdef POSIX_SIGNALS
1849 struct sigaction sigint_action
;
1850 struct sigaction sigquit_action
;
1852 struct sigaction sighup_action
;
1854 #else /* !POSIX_SIGNALS */
1857 SIGTYPE (*sigchld
)();
1860 #endif /* !POSIX_SIGNALS */
1861 /* Use volatile to protect variables from being clobbered by longjmp. */
1862 volatile int forkin
, forkout
;
1863 volatile int pty_flag
= 0;
1865 extern char **environ
;
1868 inchannel
= outchannel
= -1;
1871 if (!NILP (Vprocess_connection_type
))
1872 outchannel
= inchannel
= allocate_pty ();
1876 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1877 /* On most USG systems it does not work to open the pty's tty here,
1878 then close it and reopen it in the child. */
1880 /* Don't let this terminal become our controlling terminal
1881 (in case we don't have one). */
1882 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1884 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1887 report_file_error ("Opening pty", Qnil
);
1888 #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY)
1889 /* In the case that vfork is defined as fork, the parent process
1890 (Emacs) may send some data before the child process completes
1891 tty options setup. So we setup tty before forking. */
1892 child_setup_tty (forkout
);
1893 #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */
1895 forkin
= forkout
= -1;
1896 #endif /* not USG, or USG_SUBTTY_WORKS */
1900 #endif /* HAVE_PTYS */
1903 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1904 report_file_error ("Opening socketpair", Qnil
);
1905 outchannel
= inchannel
= sv
[0];
1906 forkout
= forkin
= sv
[1];
1908 #else /* not SKTPAIR */
1913 report_file_error ("Creating pipe", Qnil
);
1919 emacs_close (inchannel
);
1920 emacs_close (forkout
);
1921 report_file_error ("Creating pipe", Qnil
);
1926 #endif /* not SKTPAIR */
1929 /* Replaced by close_process_descs */
1930 set_exclusive_use (inchannel
);
1931 set_exclusive_use (outchannel
);
1934 /* Stride people say it's a mystery why this is needed
1935 as well as the O_NDELAY, but that it fails without this. */
1936 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1939 ioctl (inchannel
, FIONBIO
, &one
);
1944 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1945 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1948 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1949 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1953 /* Record this as an active process, with its channels.
1954 As a result, child_setup will close Emacs's side of the pipes. */
1955 chan_process
[inchannel
] = process
;
1956 XPROCESS (process
)->infd
= inchannel
;
1957 XPROCESS (process
)->outfd
= outchannel
;
1959 /* Previously we recorded the tty descriptor used in the subprocess.
1960 It was only used for getting the foreground tty process, so now
1961 we just reopen the device (see emacs_get_tty_pgrp) as this is
1962 more portable (see USG_SUBTTY_WORKS above). */
1964 XPROCESS (process
)->pty_flag
= pty_flag
;
1965 XPROCESS (process
)->status
= Qrun
;
1966 setup_process_coding_systems (process
);
1968 /* Delay interrupts until we have a chance to store
1969 the new fork's pid in its process structure */
1970 #ifdef POSIX_SIGNALS
1971 sigemptyset (&blocked
);
1973 sigaddset (&blocked
, SIGCHLD
);
1975 #ifdef HAVE_WORKING_VFORK
1976 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1977 this sets the parent's signal handlers as well as the child's.
1978 So delay all interrupts whose handlers the child might munge,
1979 and record the current handlers so they can be restored later. */
1980 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1981 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1983 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1985 #endif /* HAVE_WORKING_VFORK */
1986 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1987 #else /* !POSIX_SIGNALS */
1991 #else /* not BSD4_1 */
1992 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1993 sigsetmask (sigmask (SIGCHLD
));
1994 #else /* ordinary USG */
1996 sigchld_deferred
= 0;
1997 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1999 #endif /* ordinary USG */
2000 #endif /* not BSD4_1 */
2001 #endif /* SIGCHLD */
2002 #endif /* !POSIX_SIGNALS */
2004 FD_SET (inchannel
, &input_wait_mask
);
2005 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2006 if (inchannel
> max_process_desc
)
2007 max_process_desc
= inchannel
;
2009 /* Until we store the proper pid, enable sigchld_handler
2010 to recognize an unknown pid as standing for this process.
2011 It is very important not to let this `marker' value stay
2012 in the table after this function has returned; if it does
2013 it might cause call-process to hang and subsequent asynchronous
2014 processes to get their return values scrambled. */
2015 XPROCESS (process
)->pid
= -1;
2020 /* child_setup must clobber environ on systems with true vfork.
2021 Protect it from permanent change. */
2022 char **save_environ
= environ
;
2024 current_dir
= ENCODE_FILE (current_dir
);
2029 #endif /* not WINDOWSNT */
2031 int xforkin
= forkin
;
2032 int xforkout
= forkout
;
2034 #if 0 /* This was probably a mistake--it duplicates code later on,
2035 but fails to handle all the cases. */
2036 /* Make sure SIGCHLD is not blocked in the child. */
2037 sigsetmask (SIGEMPTYMASK
);
2040 /* Make the pty be the controlling terminal of the process. */
2042 /* First, disconnect its current controlling terminal. */
2044 /* We tried doing setsid only if pty_flag, but it caused
2045 process_set_signal to fail on SGI when using a pipe. */
2047 /* Make the pty's terminal the controlling terminal. */
2051 /* We ignore the return value
2052 because faith@cs.unc.edu says that is necessary on Linux. */
2053 ioctl (xforkin
, TIOCSCTTY
, 0);
2056 #else /* not HAVE_SETSID */
2058 /* It's very important to call setpgrp here and no time
2059 afterwards. Otherwise, we lose our controlling tty which
2060 is set when we open the pty. */
2063 #endif /* not HAVE_SETSID */
2064 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2065 if (pty_flag
&& xforkin
>= 0)
2068 tcgetattr (xforkin
, &t
);
2070 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2071 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2074 #if defined (NTTYDISC) && defined (TIOCSETD)
2075 if (pty_flag
&& xforkin
>= 0)
2077 /* Use new line discipline. */
2078 int ldisc
= NTTYDISC
;
2079 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2084 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2085 can do TIOCSPGRP only to the process's controlling tty. */
2088 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2089 I can't test it since I don't have 4.3. */
2090 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2091 ioctl (j
, TIOCNOTTY
, 0);
2094 /* In order to get a controlling terminal on some versions
2095 of BSD, it is necessary to put the process in pgrp 0
2096 before it opens the terminal. */
2104 #endif /* TIOCNOTTY */
2106 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2107 /*** There is a suggestion that this ought to be a
2108 conditional on TIOCSPGRP,
2109 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2110 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2111 that system does seem to need this code, even though
2112 both HAVE_SETSID and TIOCSCTTY are defined. */
2113 /* Now close the pty (if we had it open) and reopen it.
2114 This makes the pty the controlling terminal of the subprocess. */
2117 #ifdef SET_CHILD_PTY_PGRP
2118 int pgrp
= getpid ();
2121 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2124 emacs_close (xforkin
);
2125 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2129 emacs_write (1, "Couldn't open the pty terminal ", 31);
2130 emacs_write (1, pty_name
, strlen (pty_name
));
2131 emacs_write (1, "\n", 1);
2135 #ifdef SET_CHILD_PTY_PGRP
2136 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2137 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2140 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2142 #ifdef SETUP_SLAVE_PTY
2147 #endif /* SETUP_SLAVE_PTY */
2149 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2150 Now reenable it in the child, so it will die when we want it to. */
2152 signal (SIGHUP
, SIG_DFL
);
2154 #endif /* HAVE_PTYS */
2156 signal (SIGINT
, SIG_DFL
);
2157 signal (SIGQUIT
, SIG_DFL
);
2159 /* Stop blocking signals in the child. */
2160 #ifdef POSIX_SIGNALS
2161 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2162 #else /* !POSIX_SIGNALS */
2166 #else /* not BSD4_1 */
2167 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2168 sigsetmask (SIGEMPTYMASK
);
2169 #else /* ordinary USG */
2171 signal (SIGCHLD
, sigchld
);
2173 #endif /* ordinary USG */
2174 #endif /* not BSD4_1 */
2175 #endif /* SIGCHLD */
2176 #endif /* !POSIX_SIGNALS */
2178 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2180 child_setup_tty (xforkout
);
2181 #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */
2183 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2184 new_argv
, 1, current_dir
);
2185 #else /* not WINDOWSNT */
2186 child_setup (xforkin
, xforkout
, xforkout
,
2187 new_argv
, 1, current_dir
);
2188 #endif /* not WINDOWSNT */
2190 environ
= save_environ
;
2195 /* This runs in the Emacs process. */
2199 emacs_close (forkin
);
2200 if (forkin
!= forkout
&& forkout
>= 0)
2201 emacs_close (forkout
);
2205 /* vfork succeeded. */
2206 XPROCESS (process
)->pid
= pid
;
2209 register_child (pid
, inchannel
);
2210 #endif /* WINDOWSNT */
2212 /* If the subfork execv fails, and it exits,
2213 this close hangs. I don't know why.
2214 So have an interrupt jar it loose. */
2216 struct atimer
*timer
;
2220 EMACS_SET_SECS_USECS (offset
, 1, 0);
2221 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2224 emacs_close (forkin
);
2226 cancel_atimer (timer
);
2230 if (forkin
!= forkout
&& forkout
>= 0)
2231 emacs_close (forkout
);
2235 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2238 XPROCESS (process
)->tty_name
= Qnil
;
2241 /* Restore the signal state whether vfork succeeded or not.
2242 (We will signal an error, below, if it failed.) */
2243 #ifdef POSIX_SIGNALS
2244 #ifdef HAVE_WORKING_VFORK
2245 /* Restore the parent's signal handlers. */
2246 sigaction (SIGINT
, &sigint_action
, 0);
2247 sigaction (SIGQUIT
, &sigquit_action
, 0);
2249 sigaction (SIGHUP
, &sighup_action
, 0);
2251 #endif /* HAVE_WORKING_VFORK */
2252 /* Stop blocking signals in the parent. */
2253 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2254 #else /* !POSIX_SIGNALS */
2258 #else /* not BSD4_1 */
2259 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2260 sigsetmask (SIGEMPTYMASK
);
2261 #else /* ordinary USG */
2263 signal (SIGCHLD
, sigchld
);
2264 /* Now really handle any of these signals
2265 that came in during this function. */
2266 if (sigchld_deferred
)
2267 kill (getpid (), SIGCHLD
);
2269 #endif /* ordinary USG */
2270 #endif /* not BSD4_1 */
2271 #endif /* SIGCHLD */
2272 #endif /* !POSIX_SIGNALS */
2274 /* Now generate the error if vfork failed. */
2276 report_file_error ("Doing vfork", Qnil
);
2278 #endif /* not VMS */
2283 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2284 The address family of sa is not included in the result. */
2287 conv_sockaddr_to_lisp (sa
, len
)
2288 struct sockaddr
*sa
;
2291 Lisp_Object address
;
2294 register struct Lisp_Vector
*p
;
2296 switch (sa
->sa_family
)
2300 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2301 len
= sizeof (sin
->sin_addr
) + 1;
2302 address
= Fmake_vector (make_number (len
), Qnil
);
2303 p
= XVECTOR (address
);
2304 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2305 cp
= (unsigned char *)&sin
->sin_addr
;
2311 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2312 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2313 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2314 address
= Fmake_vector (make_number (len
), Qnil
);
2315 p
= XVECTOR (address
);
2316 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2317 for (i
= 0; i
< len
; i
++)
2318 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2322 #ifdef HAVE_LOCAL_SOCKETS
2325 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2326 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2327 if (sockun
->sun_path
[i
] == 0)
2329 return make_unibyte_string (sockun
->sun_path
, i
);
2333 len
-= sizeof (sa
->sa_family
);
2334 address
= Fcons (make_number (sa
->sa_family
),
2335 Fmake_vector (make_number (len
), Qnil
));
2336 p
= XVECTOR (XCDR (address
));
2337 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2343 p
->contents
[i
++] = make_number (*cp
++);
2349 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2352 get_lisp_to_sockaddr_size (address
, familyp
)
2353 Lisp_Object address
;
2356 register struct Lisp_Vector
*p
;
2358 if (VECTORP (address
))
2360 p
= XVECTOR (address
);
2364 return sizeof (struct sockaddr_in
);
2367 else if (p
->size
== 9)
2369 *familyp
= AF_INET6
;
2370 return sizeof (struct sockaddr_in6
);
2374 #ifdef HAVE_LOCAL_SOCKETS
2375 else if (STRINGP (address
))
2377 *familyp
= AF_LOCAL
;
2378 return sizeof (struct sockaddr_un
);
2381 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2383 struct sockaddr
*sa
;
2384 *familyp
= XINT (XCAR (address
));
2385 p
= XVECTOR (XCDR (address
));
2386 return p
->size
+ sizeof (sa
->sa_family
);
2391 /* Convert an address object (vector or string) to an internal sockaddr.
2393 The address format has been basically validated by
2394 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2395 it could have come from user data. So if FAMILY is not valid,
2396 we return after zeroing *SA. */
2399 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2401 Lisp_Object address
;
2402 struct sockaddr
*sa
;
2405 register struct Lisp_Vector
*p
;
2406 register unsigned char *cp
= NULL
;
2411 if (VECTORP (address
))
2413 p
= XVECTOR (address
);
2414 if (family
== AF_INET
)
2416 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2417 len
= sizeof (sin
->sin_addr
) + 1;
2418 i
= XINT (p
->contents
[--len
]);
2419 sin
->sin_port
= htons (i
);
2420 cp
= (unsigned char *)&sin
->sin_addr
;
2421 sa
->sa_family
= family
;
2424 else if (family
== AF_INET6
)
2426 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2427 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2428 len
= sizeof (sin6
->sin6_addr
) + 1;
2429 i
= XINT (p
->contents
[--len
]);
2430 sin6
->sin6_port
= htons (i
);
2431 for (i
= 0; i
< len
; i
++)
2432 if (INTEGERP (p
->contents
[i
]))
2434 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2437 sa
->sa_family
= family
;
2442 else if (STRINGP (address
))
2444 #ifdef HAVE_LOCAL_SOCKETS
2445 if (family
== AF_LOCAL
)
2447 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2448 cp
= SDATA (address
);
2449 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2450 sockun
->sun_path
[i
] = *cp
++;
2451 sa
->sa_family
= family
;
2458 p
= XVECTOR (XCDR (address
));
2459 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2462 for (i
= 0; i
< len
; i
++)
2463 if (INTEGERP (p
->contents
[i
]))
2464 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2467 #ifdef DATAGRAM_SOCKETS
2468 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2470 doc
: /* Get the current datagram address associated with PROCESS. */)
2472 Lisp_Object process
;
2476 CHECK_PROCESS (process
);
2478 if (!DATAGRAM_CONN_P (process
))
2481 channel
= XPROCESS (process
)->infd
;
2482 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2483 datagram_address
[channel
].len
);
2486 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2488 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2489 Returns nil upon error setting address, ADDRESS otherwise. */)
2491 Lisp_Object process
, address
;
2496 CHECK_PROCESS (process
);
2498 if (!DATAGRAM_CONN_P (process
))
2501 channel
= XPROCESS (process
)->infd
;
2503 len
= get_lisp_to_sockaddr_size (address
, &family
);
2504 if (datagram_address
[channel
].len
!= len
)
2506 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2512 static struct socket_options
{
2513 /* The name of this option. Should be lowercase version of option
2514 name without SO_ prefix. */
2516 /* Option level SOL_... */
2518 /* Option number SO_... */
2520 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2521 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2522 } socket_options
[] =
2524 #ifdef SO_BINDTODEVICE
2525 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2528 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2531 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2534 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2537 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2540 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2543 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2546 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2548 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2551 /* Set option OPT to value VAL on socket S.
2553 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2554 Signals an error if setting a known option fails.
2558 set_socket_option (s
, opt
, val
)
2560 Lisp_Object opt
, val
;
2563 struct socket_options
*sopt
;
2568 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2569 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2570 if (strcmp (name
, sopt
->name
) == 0)
2573 switch (sopt
->opttype
)
2578 optval
= NILP (val
) ? 0 : 1;
2579 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2580 &optval
, sizeof (optval
));
2588 optval
= XINT (val
);
2590 error ("Bad option value for %s", name
);
2591 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2592 &optval
, sizeof (optval
));
2596 #ifdef SO_BINDTODEVICE
2599 char devname
[IFNAMSIZ
+1];
2601 /* This is broken, at least in the Linux 2.4 kernel.
2602 To unbind, the arg must be a zero integer, not the empty string.
2603 This should work on all systems. KFS. 2003-09-23. */
2604 bzero (devname
, sizeof devname
);
2607 char *arg
= (char *) SDATA (val
);
2608 int len
= min (strlen (arg
), IFNAMSIZ
);
2609 bcopy (arg
, devname
, len
);
2611 else if (!NILP (val
))
2612 error ("Bad option value for %s", name
);
2613 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2622 struct linger linger
;
2625 linger
.l_linger
= 0;
2627 linger
.l_linger
= XINT (val
);
2629 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2630 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2631 &linger
, sizeof (linger
));
2641 report_file_error ("Cannot set network option",
2642 Fcons (opt
, Fcons (val
, Qnil
)));
2643 return (1 << sopt
->optbit
);
2647 DEFUN ("set-network-process-option",
2648 Fset_network_process_option
, Sset_network_process_option
,
2650 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2651 See `make-network-process' for a list of options and values.
2652 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2653 OPTION is not a supported option, return nil instead; otherwise return t. */)
2654 (process
, option
, value
, no_error
)
2655 Lisp_Object process
, option
, value
;
2656 Lisp_Object no_error
;
2659 struct Lisp_Process
*p
;
2661 CHECK_PROCESS (process
);
2662 p
= XPROCESS (process
);
2663 if (!NETCONN1_P (p
))
2664 error ("Process is not a network process");
2668 error ("Process is not running");
2670 if (set_socket_option (s
, option
, value
))
2672 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2676 if (NILP (no_error
))
2677 error ("Unknown or unsupported option");
2683 /* A version of request_sigio suitable for a record_unwind_protect. */
2687 unwind_request_sigio (dummy
)
2690 if (interrupt_input
)
2696 /* Create a network stream/datagram client/server process. Treated
2697 exactly like a normal process when reading and writing. Primary
2698 differences are in status display and process deletion. A network
2699 connection has no PID; you cannot signal it. All you can do is
2700 stop/continue it and deactivate/close it via delete-process */
2702 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2704 doc
: /* Create and return a network server or client process.
2706 In Emacs, network connections are represented by process objects, so
2707 input and output work as for subprocesses and `delete-process' closes
2708 a network connection. However, a network process has no process id,
2709 it cannot be signaled, and the status codes are different from normal
2712 Arguments are specified as keyword/argument pairs. The following
2713 arguments are defined:
2715 :name NAME -- NAME is name for process. It is modified if necessary
2718 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2719 with the process. Process output goes at end of that buffer, unless
2720 you specify an output stream or filter function to handle the output.
2721 BUFFER may be also nil, meaning that this process is not associated
2724 :host HOST -- HOST is name of the host to connect to, or its IP
2725 address. The symbol `local' specifies the local host. If specified
2726 for a server process, it must be a valid name or address for the local
2727 host, and only clients connecting to that address will be accepted.
2729 :service SERVICE -- SERVICE is name of the service desired, or an
2730 integer specifying a port number to connect to. If SERVICE is t,
2731 a random port number is selected for the server. (If Emacs was
2732 compiled with getaddrinfo, a port number can also be specified as a
2733 string, e.g. "80", as well as an integer. This is not portable.)
2735 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2736 stream type connection, `datagram' creates a datagram type connection.
2738 :family FAMILY -- FAMILY is the address (and protocol) family for the
2739 service specified by HOST and SERVICE. The default (nil) is to use
2740 whatever address family (IPv4 or IPv6) that is defined for the host
2741 and port number specified by HOST and SERVICE. Other address families
2743 local -- for a local (i.e. UNIX) address specified by SERVICE.
2744 ipv4 -- use IPv4 address family only.
2745 ipv6 -- use IPv6 address family only.
2747 :local ADDRESS -- ADDRESS is the local address used for the connection.
2748 This parameter is ignored when opening a client process. When specified
2749 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2751 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2752 connection. This parameter is ignored when opening a stream server
2753 process. For a datagram server process, it specifies the initial
2754 setting of the remote datagram address. When specified for a client
2755 process, the FAMILY, HOST, and SERVICE args are ignored.
2757 The format of ADDRESS depends on the address family:
2758 - An IPv4 address is represented as an vector of integers [A B C D P]
2759 corresponding to numeric IP address A.B.C.D and port number P.
2760 - A local address is represented as a string with the address in the
2761 local address space.
2762 - An "unsupported family" address is represented by a cons (F . AV)
2763 where F is the family number and AV is a vector containing the socket
2764 address data with one element per address data byte. Do not rely on
2765 this format in portable code, as it may depend on implementation
2766 defined constants, data sizes, and data structure alignment.
2768 :coding CODING -- If CODING is a symbol, it specifies the coding
2769 system used for both reading and writing for this process. If CODING
2770 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2771 ENCODING is used for writing.
2773 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2774 return without waiting for the connection to complete; instead, the
2775 sentinel function will be called with second arg matching "open" (if
2776 successful) or "failed" when the connect completes. Default is to use
2777 a blocking connect (i.e. wait) for stream type connections.
2779 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2780 running when Emacs is exited.
2782 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2783 In the stopped state, a server process does not accept new
2784 connections, and a client process does not handle incoming traffic.
2785 The stopped state is cleared by `continue-process' and set by
2788 :filter FILTER -- Install FILTER as the process filter.
2790 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2791 process filter are multibyte, otherwise they are unibyte.
2792 If this keyword is not specified, the strings are multibyte if
2793 `default-enable-multibyte-characters' is non-nil.
2795 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2797 :log LOG -- Install LOG as the server process log function. This
2798 function is called when the server accepts a network connection from a
2799 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2800 is the server process, CLIENT is the new process for the connection,
2801 and MESSAGE is a string.
2803 :plist PLIST -- Install PLIST as the new process' initial plist.
2805 :server QLEN -- if QLEN is non-nil, create a server process for the
2806 specified FAMILY, SERVICE, and connection type (stream or datagram).
2807 If QLEN is an integer, it is used as the max. length of the server's
2808 pending connection queue (also known as the backlog); the default
2809 queue length is 5. Default is to create a client process.
2811 The following network options can be specified for this connection:
2813 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2814 :dontroute BOOL -- Only send to directly connected hosts.
2815 :keepalive BOOL -- Send keep-alive messages on network stream.
2816 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2817 :oobinline BOOL -- Place out-of-band data in receive data stream.
2818 :priority INT -- Set protocol defined priority for sent packets.
2819 :reuseaddr BOOL -- Allow reusing a recently used local address
2820 (this is allowed by default for a server process).
2821 :bindtodevice NAME -- bind to interface NAME. Using this may require
2822 special privileges on some systems.
2824 Consult the relevant system programmer's manual pages for more
2825 information on using these options.
2828 A server process will listen for and accept connections from clients.
2829 When a client connection is accepted, a new network process is created
2830 for the connection with the following parameters:
2832 - The client's process name is constructed by concatenating the server
2833 process' NAME and a client identification string.
2834 - If the FILTER argument is non-nil, the client process will not get a
2835 separate process buffer; otherwise, the client's process buffer is a newly
2836 created buffer named after the server process' BUFFER name or process
2837 NAME concatenated with the client identification string.
2838 - The connection type and the process filter and sentinel parameters are
2839 inherited from the server process' TYPE, FILTER and SENTINEL.
2840 - The client process' contact info is set according to the client's
2841 addressing information (typically an IP address and a port number).
2842 - The client process' plist is initialized from the server's plist.
2844 Notice that the FILTER and SENTINEL args are never used directly by
2845 the server process. Also, the BUFFER argument is not used directly by
2846 the server process, but via the optional :log function, accepted (and
2847 failed) connections may be logged in the server process' buffer.
2849 The original argument list, modified with the actual connection
2850 information, is available via the `process-contact' function.
2852 usage: (make-network-process &rest ARGS) */)
2858 Lisp_Object contact
;
2859 struct Lisp_Process
*p
;
2860 #ifdef HAVE_GETADDRINFO
2861 struct addrinfo ai
, *res
, *lres
;
2862 struct addrinfo hints
;
2863 char *portstring
, portbuf
[128];
2864 #else /* HAVE_GETADDRINFO */
2865 struct _emacs_addrinfo
2871 struct sockaddr
*ai_addr
;
2872 struct _emacs_addrinfo
*ai_next
;
2874 #endif /* HAVE_GETADDRINFO */
2875 struct sockaddr_in address_in
;
2876 #ifdef HAVE_LOCAL_SOCKETS
2877 struct sockaddr_un address_un
;
2882 int s
= -1, outch
, inch
;
2883 struct gcpro gcpro1
;
2884 int count
= SPECPDL_INDEX ();
2886 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2888 Lisp_Object name
, buffer
, host
, service
, address
;
2889 Lisp_Object filter
, sentinel
;
2890 int is_non_blocking_client
= 0;
2891 int is_server
= 0, backlog
= 5;
2898 /* Save arguments for process-contact and clone-process. */
2899 contact
= Flist (nargs
, args
);
2903 /* Ensure socket support is loaded if available. */
2904 init_winsock (TRUE
);
2907 /* :type TYPE (nil: stream, datagram */
2908 tem
= Fplist_get (contact
, QCtype
);
2910 socktype
= SOCK_STREAM
;
2911 #ifdef DATAGRAM_SOCKETS
2912 else if (EQ (tem
, Qdatagram
))
2913 socktype
= SOCK_DGRAM
;
2916 error ("Unsupported connection type");
2919 tem
= Fplist_get (contact
, QCserver
);
2922 /* Don't support network sockets when non-blocking mode is
2923 not available, since a blocked Emacs is not useful. */
2924 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2925 error ("Network servers not supported");
2929 backlog
= XINT (tem
);
2933 /* Make QCaddress an alias for :local (server) or :remote (client). */
2934 QCaddress
= is_server
? QClocal
: QCremote
;
2937 if (!is_server
&& socktype
== SOCK_STREAM
2938 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2940 #ifndef NON_BLOCKING_CONNECT
2941 error ("Non-blocking connect not supported");
2943 is_non_blocking_client
= 1;
2947 name
= Fplist_get (contact
, QCname
);
2948 buffer
= Fplist_get (contact
, QCbuffer
);
2949 filter
= Fplist_get (contact
, QCfilter
);
2950 sentinel
= Fplist_get (contact
, QCsentinel
);
2952 CHECK_STRING (name
);
2955 /* Let's handle TERM before things get complicated ... */
2956 host
= Fplist_get (contact
, QChost
);
2957 CHECK_STRING (host
);
2959 service
= Fplist_get (contact
, QCservice
);
2960 if (INTEGERP (service
))
2961 port
= htons ((unsigned short) XINT (service
));
2964 struct servent
*svc_info
;
2965 CHECK_STRING (service
);
2966 svc_info
= getservbyname (SDATA (service
), "tcp");
2968 error ("Unknown service: %s", SDATA (service
));
2969 port
= svc_info
->s_port
;
2972 s
= connect_server (0);
2974 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2975 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2976 send_command (s
, C_DUMB
, 1, 0);
2978 #else /* not TERM */
2980 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2981 ai
.ai_socktype
= socktype
;
2986 /* :local ADDRESS or :remote ADDRESS */
2987 address
= Fplist_get (contact
, QCaddress
);
2988 if (!NILP (address
))
2990 host
= service
= Qnil
;
2992 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2993 error ("Malformed :address");
2994 ai
.ai_family
= family
;
2995 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2996 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3000 /* :family FAMILY -- nil (for Inet), local, or integer. */
3001 tem
= Fplist_get (contact
, QCfamily
);
3004 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3010 #ifdef HAVE_LOCAL_SOCKETS
3011 else if (EQ (tem
, Qlocal
))
3015 else if (EQ (tem
, Qipv6
))
3018 else if (EQ (tem
, Qipv4
))
3020 else if (INTEGERP (tem
))
3021 family
= XINT (tem
);
3023 error ("Unknown address family");
3025 ai
.ai_family
= family
;
3027 /* :service SERVICE -- string, integer (port number), or t (random port). */
3028 service
= Fplist_get (contact
, QCservice
);
3030 #ifdef HAVE_LOCAL_SOCKETS
3031 if (family
== AF_LOCAL
)
3033 /* Host is not used. */
3035 CHECK_STRING (service
);
3036 bzero (&address_un
, sizeof address_un
);
3037 address_un
.sun_family
= AF_LOCAL
;
3038 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3039 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3040 ai
.ai_addrlen
= sizeof address_un
;
3045 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3046 host
= Fplist_get (contact
, QChost
);
3049 if (EQ (host
, Qlocal
))
3050 host
= build_string ("localhost");
3051 CHECK_STRING (host
);
3054 /* Slow down polling to every ten seconds.
3055 Some kernels have a bug which causes retrying connect to fail
3056 after a connect. Polling can interfere with gethostbyname too. */
3057 #ifdef POLL_FOR_INPUT
3058 if (socktype
== SOCK_STREAM
)
3060 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3061 bind_polling_period (10);
3065 #ifdef HAVE_GETADDRINFO
3066 /* If we have a host, use getaddrinfo to resolve both host and service.
3067 Otherwise, use getservbyname to lookup the service. */
3071 /* SERVICE can either be a string or int.
3072 Convert to a C string for later use by getaddrinfo. */
3073 if (EQ (service
, Qt
))
3075 else if (INTEGERP (service
))
3077 sprintf (portbuf
, "%ld", (long) XINT (service
));
3078 portstring
= portbuf
;
3082 CHECK_STRING (service
);
3083 portstring
= SDATA (service
);
3088 memset (&hints
, 0, sizeof (hints
));
3090 hints
.ai_family
= family
;
3091 hints
.ai_socktype
= socktype
;
3092 hints
.ai_protocol
= 0;
3094 #ifdef HAVE_RES_INIT
3098 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3100 #ifdef HAVE_GAI_STRERROR
3101 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3103 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3109 #endif /* HAVE_GETADDRINFO */
3111 /* We end up here if getaddrinfo is not defined, or in case no hostname
3112 has been specified (e.g. for a local server process). */
3114 if (EQ (service
, Qt
))
3116 else if (INTEGERP (service
))
3117 port
= htons ((unsigned short) XINT (service
));
3120 struct servent
*svc_info
;
3121 CHECK_STRING (service
);
3122 svc_info
= getservbyname (SDATA (service
),
3123 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3125 error ("Unknown service: %s", SDATA (service
));
3126 port
= svc_info
->s_port
;
3129 bzero (&address_in
, sizeof address_in
);
3130 address_in
.sin_family
= family
;
3131 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3132 address_in
.sin_port
= port
;
3134 #ifndef HAVE_GETADDRINFO
3137 struct hostent
*host_info_ptr
;
3139 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3140 as it may `hang' Emacs for a very long time. */
3144 #ifdef HAVE_RES_INIT
3148 host_info_ptr
= gethostbyname (SDATA (host
));
3153 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3154 host_info_ptr
->h_length
);
3155 family
= host_info_ptr
->h_addrtype
;
3156 address_in
.sin_family
= family
;
3159 /* Attempt to interpret host as numeric inet address */
3161 IN_ADDR numeric_addr
;
3162 numeric_addr
= inet_addr ((char *) SDATA (host
));
3163 if (NUMERIC_ADDR_ERROR
)
3164 error ("Unknown host \"%s\"", SDATA (host
));
3166 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3167 sizeof (address_in
.sin_addr
));
3171 #endif /* not HAVE_GETADDRINFO */
3173 ai
.ai_family
= family
;
3174 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3175 ai
.ai_addrlen
= sizeof address_in
;
3180 /* Previously this was compiled unconditionally, but that seems
3181 unnecessary on modern systems, and `unrequest_sigio' was a noop
3182 under X anyway. --lorentey */
3183 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3184 when connect is interrupted. So let's not let it get interrupted.
3185 Note we do not turn off polling, because polling is only used
3186 when not interrupt_input, and thus not normally used on the systems
3187 which have this bug. On systems which use polling, there's no way
3188 to quit if polling is turned off. */
3190 && !is_server
&& socktype
== SOCK_STREAM
)
3192 /* Comment from KFS: The original open-network-stream code
3193 didn't unwind protect this, but it seems like the proper
3194 thing to do. In any case, I don't see how it could harm to
3195 do this -- and it makes cleanup (using unbind_to) easier. */
3196 record_unwind_protect (unwind_request_sigio
, Qnil
);
3201 /* Do this in case we never enter the for-loop below. */
3202 count1
= SPECPDL_INDEX ();
3205 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3211 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3218 #ifdef DATAGRAM_SOCKETS
3219 if (!is_server
&& socktype
== SOCK_DGRAM
)
3221 #endif /* DATAGRAM_SOCKETS */
3223 #ifdef NON_BLOCKING_CONNECT
3224 if (is_non_blocking_client
)
3227 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3229 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3241 /* Make us close S if quit. */
3242 record_unwind_protect (close_file_unwind
, make_number (s
));
3244 /* Parse network options in the arg list.
3245 We simply ignore anything which isn't a known option (including other keywords).
3246 An error is signalled if setting a known option fails. */
3247 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3248 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3252 /* Configure as a server socket. */
3254 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3255 explicit :reuseaddr key to override this. */
3256 #ifdef HAVE_LOCAL_SOCKETS
3257 if (family
!= AF_LOCAL
)
3259 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3262 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3263 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3266 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3267 report_file_error ("Cannot bind server socket", Qnil
);
3269 #ifdef HAVE_GETSOCKNAME
3270 if (EQ (service
, Qt
))
3272 struct sockaddr_in sa1
;
3273 int len1
= sizeof (sa1
);
3274 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3276 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3277 service
= make_number (ntohs (sa1
.sin_port
));
3278 contact
= Fplist_put (contact
, QCservice
, service
);
3283 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3284 report_file_error ("Cannot listen on server socket", Qnil
);
3292 /* This turns off all alarm-based interrupts; the
3293 bind_polling_period call above doesn't always turn all the
3294 short-interval ones off, especially if interrupt_input is
3297 It'd be nice to be able to control the connect timeout
3298 though. Would non-blocking connect calls be portable?
3300 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3302 turn_on_atimers (0);
3304 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3307 turn_on_atimers (1);
3309 if (ret
== 0 || xerrno
== EISCONN
)
3311 /* The unwind-protect will be discarded afterwards.
3312 Likewise for immediate_quit. */
3316 #ifdef NON_BLOCKING_CONNECT
3318 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3322 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3330 /* Discard the unwind protect closing S. */
3331 specpdl_ptr
= specpdl
+ count1
;
3335 if (xerrno
== EINTR
)
3341 #ifdef DATAGRAM_SOCKETS
3342 if (socktype
== SOCK_DGRAM
)
3344 if (datagram_address
[s
].sa
)
3346 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3347 datagram_address
[s
].len
= lres
->ai_addrlen
;
3351 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3352 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3355 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3356 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3357 conv_lisp_to_sockaddr (rfamily
, remote
,
3358 datagram_address
[s
].sa
, rlen
);
3362 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3365 contact
= Fplist_put (contact
, QCaddress
,
3366 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3367 #ifdef HAVE_GETSOCKNAME
3370 struct sockaddr_in sa1
;
3371 int len1
= sizeof (sa1
);
3372 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3373 contact
= Fplist_put (contact
, QClocal
,
3374 conv_sockaddr_to_lisp (&sa1
, len1
));
3381 #ifdef HAVE_GETADDRINFO
3390 /* Discard the unwind protect for closing S, if any. */
3391 specpdl_ptr
= specpdl
+ count1
;
3393 /* Unwind bind_polling_period and request_sigio. */
3394 unbind_to (count
, Qnil
);
3398 /* If non-blocking got this far - and failed - assume non-blocking is
3399 not supported after all. This is probably a wrong assumption, but
3400 the normal blocking calls to open-network-stream handles this error
3402 if (is_non_blocking_client
)
3407 report_file_error ("make server process failed", contact
);
3409 report_file_error ("make client process failed", contact
);
3412 #endif /* not TERM */
3418 buffer
= Fget_buffer_create (buffer
);
3419 proc
= make_process (name
);
3421 chan_process
[inch
] = proc
;
3424 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3427 fcntl (inch
, F_SETFL
, O_NDELAY
);
3431 p
= XPROCESS (proc
);
3433 p
->childp
= contact
;
3434 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3437 p
->sentinel
= sentinel
;
3439 p
->filter_multibyte
= !NILP (buffer_defaults
.enable_multibyte_characters
);
3440 /* Override the above only if :filter-multibyte is specified. */
3441 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3442 p
->filter_multibyte
= !NILP (Fplist_get (contact
, QCfilter_multibyte
));
3443 p
->log
= Fplist_get (contact
, QClog
);
3444 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3445 p
->kill_without_query
= 1;
3446 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3451 if (is_server
&& socktype
== SOCK_STREAM
)
3452 p
->status
= Qlisten
;
3454 /* Make the process marker point into the process buffer (if any). */
3455 if (BUFFERP (buffer
))
3456 set_marker_both (p
->mark
, buffer
,
3457 BUF_ZV (XBUFFER (buffer
)),
3458 BUF_ZV_BYTE (XBUFFER (buffer
)));
3460 #ifdef NON_BLOCKING_CONNECT
3461 if (is_non_blocking_client
)
3463 /* We may get here if connect did succeed immediately. However,
3464 in that case, we still need to signal this like a non-blocking
3466 p
->status
= Qconnect
;
3467 if (!FD_ISSET (inch
, &connect_wait_mask
))
3469 FD_SET (inch
, &connect_wait_mask
);
3470 num_pending_connects
++;
3475 /* A server may have a client filter setting of Qt, but it must
3476 still listen for incoming connects unless it is stopped. */
3477 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3478 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3480 FD_SET (inch
, &input_wait_mask
);
3481 FD_SET (inch
, &non_keyboard_wait_mask
);
3484 if (inch
> max_process_desc
)
3485 max_process_desc
= inch
;
3487 tem
= Fplist_member (contact
, QCcoding
);
3488 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3489 tem
= Qnil
; /* No error message (too late!). */
3492 /* Setup coding systems for communicating with the network stream. */
3493 struct gcpro gcpro1
;
3494 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3495 Lisp_Object coding_systems
= Qt
;
3496 Lisp_Object args
[5], val
;
3500 val
= XCAR (XCDR (tem
));
3504 else if (!NILP (Vcoding_system_for_read
))
3505 val
= Vcoding_system_for_read
;
3506 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3507 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3508 /* We dare not decode end-of-line format by setting VAL to
3509 Qraw_text, because the existing Emacs Lisp libraries
3510 assume that they receive bare code including a sequene of
3515 if (NILP (host
) || NILP (service
))
3516 coding_systems
= Qnil
;
3519 args
[0] = Qopen_network_stream
, args
[1] = name
,
3520 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3522 coding_systems
= Ffind_operation_coding_system (5, args
);
3525 if (CONSP (coding_systems
))
3526 val
= XCAR (coding_systems
);
3527 else if (CONSP (Vdefault_process_coding_system
))
3528 val
= XCAR (Vdefault_process_coding_system
);
3532 p
->decode_coding_system
= val
;
3536 val
= XCAR (XCDR (tem
));
3540 else if (!NILP (Vcoding_system_for_write
))
3541 val
= Vcoding_system_for_write
;
3542 else if (NILP (current_buffer
->enable_multibyte_characters
))
3546 if (EQ (coding_systems
, Qt
))
3548 if (NILP (host
) || NILP (service
))
3549 coding_systems
= Qnil
;
3552 args
[0] = Qopen_network_stream
, args
[1] = name
,
3553 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3555 coding_systems
= Ffind_operation_coding_system (5, args
);
3559 if (CONSP (coding_systems
))
3560 val
= XCDR (coding_systems
);
3561 else if (CONSP (Vdefault_process_coding_system
))
3562 val
= XCDR (Vdefault_process_coding_system
);
3566 p
->encode_coding_system
= val
;
3568 setup_process_coding_systems (proc
);
3570 p
->decoding_buf
= make_uninit_string (0);
3571 p
->decoding_carryover
= 0;
3572 p
->encoding_buf
= make_uninit_string (0);
3574 p
->inherit_coding_system_flag
3575 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3580 #endif /* HAVE_SOCKETS */
3583 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3586 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3587 doc
: /* Return an alist of all network interfaces and their network address.
3588 Each element is a cons, the car of which is a string containing the
3589 interface name, and the cdr is the network address in internal
3590 format; see the description of ADDRESS in `make-network-process'. */)
3593 struct ifconf ifconf
;
3594 struct ifreq
*ifreqs
= NULL
;
3599 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3605 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3606 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3613 ifconf
.ifc_len
= buf_size
;
3614 ifconf
.ifc_req
= ifreqs
;
3615 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3621 if (ifconf
.ifc_len
== buf_size
)
3625 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3628 while (--ifaces
>= 0)
3630 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3631 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3632 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3634 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3635 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3636 res
= Fcons (Fcons (build_string (namebuf
),
3637 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3638 sizeof (struct sockaddr
))),
3644 #endif /* SIOCGIFCONF */
3646 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3653 static struct ifflag_def ifflag_table
[] = {
3657 #ifdef IFF_BROADCAST
3658 { IFF_BROADCAST
, "broadcast" },
3661 { IFF_DEBUG
, "debug" },
3664 { IFF_LOOPBACK
, "loopback" },
3666 #ifdef IFF_POINTOPOINT
3667 { IFF_POINTOPOINT
, "pointopoint" },
3670 { IFF_RUNNING
, "running" },
3673 { IFF_NOARP
, "noarp" },
3676 { IFF_PROMISC
, "promisc" },
3678 #ifdef IFF_NOTRAILERS
3679 { IFF_NOTRAILERS
, "notrailers" },
3682 { IFF_ALLMULTI
, "allmulti" },
3685 { IFF_MASTER
, "master" },
3688 { IFF_SLAVE
, "slave" },
3690 #ifdef IFF_MULTICAST
3691 { IFF_MULTICAST
, "multicast" },
3694 { IFF_PORTSEL
, "portsel" },
3696 #ifdef IFF_AUTOMEDIA
3697 { IFF_AUTOMEDIA
, "automedia" },
3700 { IFF_DYNAMIC
, "dynamic" },
3703 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3706 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3709 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3712 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3715 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3720 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3721 doc
: /* Return information about network interface named IFNAME.
3722 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3723 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3724 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3725 FLAGS is the current flags of the interface. */)
3730 Lisp_Object res
= Qnil
;
3735 CHECK_STRING (ifname
);
3737 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3738 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3740 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3745 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3746 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3748 int flags
= rq
.ifr_flags
;
3749 struct ifflag_def
*fp
;
3753 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3755 if (flags
& fp
->flag_bit
)
3757 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3758 flags
-= fp
->flag_bit
;
3761 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3763 if (flags
& (1 << fnum
))
3765 elt
= Fcons (make_number (fnum
), elt
);
3770 res
= Fcons (elt
, res
);
3773 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3774 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3776 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3777 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3781 for (n
= 0; n
< 6; n
++)
3782 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3783 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3786 res
= Fcons (elt
, res
);
3789 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3790 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3793 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3794 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3796 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3800 res
= Fcons (elt
, res
);
3803 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3804 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3807 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3810 res
= Fcons (elt
, res
);
3813 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3814 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3817 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3820 res
= Fcons (elt
, res
);
3824 return any
? res
: Qnil
;
3827 #endif /* HAVE_SOCKETS */
3829 /* Turn off input and output for process PROC. */
3832 deactivate_process (proc
)
3835 register int inchannel
, outchannel
;
3836 register struct Lisp_Process
*p
= XPROCESS (proc
);
3838 inchannel
= p
->infd
;
3839 outchannel
= p
->outfd
;
3841 #ifdef ADAPTIVE_READ_BUFFERING
3842 if (p
->read_output_delay
> 0)
3844 if (--process_output_delay_count
< 0)
3845 process_output_delay_count
= 0;
3846 p
->read_output_delay
= 0;
3847 p
->read_output_skip
= 0;
3853 /* Beware SIGCHLD hereabouts. */
3854 flush_pending_output (inchannel
);
3857 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3858 sys$
dassgn (outchannel
);
3859 vs
= get_vms_process_pointer (p
->pid
);
3861 give_back_vms_process_stuff (vs
);
3864 emacs_close (inchannel
);
3865 if (outchannel
>= 0 && outchannel
!= inchannel
)
3866 emacs_close (outchannel
);
3871 #ifdef DATAGRAM_SOCKETS
3872 if (DATAGRAM_CHAN_P (inchannel
))
3874 xfree (datagram_address
[inchannel
].sa
);
3875 datagram_address
[inchannel
].sa
= 0;
3876 datagram_address
[inchannel
].len
= 0;
3879 chan_process
[inchannel
] = Qnil
;
3880 FD_CLR (inchannel
, &input_wait_mask
);
3881 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3882 #ifdef NON_BLOCKING_CONNECT
3883 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3885 FD_CLR (inchannel
, &connect_wait_mask
);
3886 if (--num_pending_connects
< 0)
3890 if (inchannel
== max_process_desc
)
3893 /* We just closed the highest-numbered process input descriptor,
3894 so recompute the highest-numbered one now. */
3895 max_process_desc
= 0;
3896 for (i
= 0; i
< MAXDESC
; i
++)
3897 if (!NILP (chan_process
[i
]))
3898 max_process_desc
= i
;
3903 /* Close all descriptors currently in use for communication
3904 with subprocess. This is used in a newly-forked subprocess
3905 to get rid of irrelevant descriptors. */
3908 close_process_descs ()
3912 for (i
= 0; i
< MAXDESC
; i
++)
3914 Lisp_Object process
;
3915 process
= chan_process
[i
];
3916 if (!NILP (process
))
3918 int in
= XPROCESS (process
)->infd
;
3919 int out
= XPROCESS (process
)->outfd
;
3922 if (out
>= 0 && in
!= out
)
3929 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3931 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3932 It is read into the process' buffers or given to their filter functions.
3933 Non-nil arg PROCESS means do not return until some output has been received
3936 Non-nil second arg SECONDS and third arg MILLISEC are number of
3937 seconds and milliseconds to wait; return after that much time whether
3938 or not there is input. If SECONDS is a floating point number,
3939 it specifies a fractional number of seconds to wait.
3941 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3942 from PROCESS, suspending reading output from other processes.
3943 If JUST-THIS-ONE is an integer, don't run any timers either.
3944 Return non-nil if we received any output before the timeout expired. */)
3945 (process
, seconds
, millisec
, just_this_one
)
3946 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
3948 int secs
, usecs
= 0;
3950 if (! NILP (process
))
3951 CHECK_PROCESS (process
);
3953 just_this_one
= Qnil
;
3955 if (!NILP (seconds
))
3957 if (INTEGERP (seconds
))
3958 secs
= XINT (seconds
);
3959 else if (FLOATP (seconds
))
3961 double timeout
= XFLOAT_DATA (seconds
);
3962 secs
= (int) timeout
;
3963 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3966 wrong_type_argument (Qnumberp
, seconds
);
3968 if (INTEGERP (millisec
))
3971 usecs
+= XINT (millisec
) * 1000;
3972 carry
= usecs
/ 1000000;
3974 if ((usecs
-= carry
* 1000000) < 0)
3981 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3982 secs
= -1, usecs
= 0;
3985 secs
= NILP (process
) ? -1 : 0;
3988 (wait_reading_process_output (secs
, usecs
, 0, 0,
3990 !NILP (process
) ? XPROCESS (process
) : NULL
,
3991 NILP (just_this_one
) ? 0 :
3992 !INTEGERP (just_this_one
) ? 1 : -1)
3996 /* Accept a connection for server process SERVER on CHANNEL. */
3998 static int connect_counter
= 0;
4001 server_accept_connection (server
, channel
)
4005 Lisp_Object proc
, caller
, name
, buffer
;
4006 Lisp_Object contact
, host
, service
;
4007 struct Lisp_Process
*ps
= XPROCESS (server
);
4008 struct Lisp_Process
*p
;
4012 struct sockaddr_in in
;
4014 struct sockaddr_in6 in6
;
4016 #ifdef HAVE_LOCAL_SOCKETS
4017 struct sockaddr_un un
;
4020 int len
= sizeof saddr
;
4022 s
= accept (channel
, &saddr
.sa
, &len
);
4031 if (code
== EWOULDBLOCK
)
4035 if (!NILP (ps
->log
))
4036 call3 (ps
->log
, server
, Qnil
,
4037 concat3 (build_string ("accept failed with code"),
4038 Fnumber_to_string (make_number (code
)),
4039 build_string ("\n")));
4045 /* Setup a new process to handle the connection. */
4047 /* Generate a unique identification of the caller, and build contact
4048 information for this process. */
4051 switch (saddr
.sa
.sa_family
)
4055 Lisp_Object args
[5];
4056 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4057 args
[0] = build_string ("%d.%d.%d.%d");
4058 args
[1] = make_number (*ip
++);
4059 args
[2] = make_number (*ip
++);
4060 args
[3] = make_number (*ip
++);
4061 args
[4] = make_number (*ip
++);
4062 host
= Fformat (5, args
);
4063 service
= make_number (ntohs (saddr
.in
.sin_port
));
4065 args
[0] = build_string (" <%s:%d>");
4068 caller
= Fformat (3, args
);
4075 Lisp_Object args
[9];
4076 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4078 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4079 for (i
= 0; i
< 8; i
++)
4080 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4081 host
= Fformat (9, args
);
4082 service
= make_number (ntohs (saddr
.in
.sin_port
));
4084 args
[0] = build_string (" <[%s]:%d>");
4087 caller
= Fformat (3, args
);
4092 #ifdef HAVE_LOCAL_SOCKETS
4096 caller
= Fnumber_to_string (make_number (connect_counter
));
4097 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
4101 /* Create a new buffer name for this process if it doesn't have a
4102 filter. The new buffer name is based on the buffer name or
4103 process name of the server process concatenated with the caller
4106 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4110 buffer
= ps
->buffer
;
4112 buffer
= Fbuffer_name (buffer
);
4117 buffer
= concat2 (buffer
, caller
);
4118 buffer
= Fget_buffer_create (buffer
);
4122 /* Generate a unique name for the new server process. Combine the
4123 server process name with the caller identification. */
4125 name
= concat2 (ps
->name
, caller
);
4126 proc
= make_process (name
);
4128 chan_process
[s
] = proc
;
4131 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4134 fcntl (s
, F_SETFL
, O_NDELAY
);
4138 p
= XPROCESS (proc
);
4140 /* Build new contact information for this setup. */
4141 contact
= Fcopy_sequence (ps
->childp
);
4142 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4143 contact
= Fplist_put (contact
, QChost
, host
);
4144 if (!NILP (service
))
4145 contact
= Fplist_put (contact
, QCservice
, service
);
4146 contact
= Fplist_put (contact
, QCremote
,
4147 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4148 #ifdef HAVE_GETSOCKNAME
4150 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4151 contact
= Fplist_put (contact
, QClocal
,
4152 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4155 p
->childp
= contact
;
4156 p
->plist
= Fcopy_sequence (ps
->plist
);
4159 p
->sentinel
= ps
->sentinel
;
4160 p
->filter
= ps
->filter
;
4167 /* Client processes for accepted connections are not stopped initially. */
4168 if (!EQ (p
->filter
, Qt
))
4170 FD_SET (s
, &input_wait_mask
);
4171 FD_SET (s
, &non_keyboard_wait_mask
);
4174 if (s
> max_process_desc
)
4175 max_process_desc
= s
;
4177 /* Setup coding system for new process based on server process.
4178 This seems to be the proper thing to do, as the coding system
4179 of the new process should reflect the settings at the time the
4180 server socket was opened; not the current settings. */
4182 p
->decode_coding_system
= ps
->decode_coding_system
;
4183 p
->encode_coding_system
= ps
->encode_coding_system
;
4184 setup_process_coding_systems (proc
);
4186 p
->decoding_buf
= make_uninit_string (0);
4187 p
->decoding_carryover
= 0;
4188 p
->encoding_buf
= make_uninit_string (0);
4190 p
->inherit_coding_system_flag
4191 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4193 if (!NILP (ps
->log
))
4194 call3 (ps
->log
, server
, proc
,
4195 concat3 (build_string ("accept from "),
4196 (STRINGP (host
) ? host
: build_string ("-")),
4197 build_string ("\n")));
4199 if (!NILP (p
->sentinel
))
4200 exec_sentinel (proc
,
4201 concat3 (build_string ("open from "),
4202 (STRINGP (host
) ? host
: build_string ("-")),
4203 build_string ("\n")));
4206 /* This variable is different from waiting_for_input in keyboard.c.
4207 It is used to communicate to a lisp process-filter/sentinel (via the
4208 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4209 for user-input when that process-filter was called.
4210 waiting_for_input cannot be used as that is by definition 0 when
4211 lisp code is being evalled.
4212 This is also used in record_asynch_buffer_change.
4213 For that purpose, this must be 0
4214 when not inside wait_reading_process_output. */
4215 static int waiting_for_user_input_p
;
4218 wait_reading_process_output_unwind (data
)
4221 waiting_for_user_input_p
= XINT (data
);
4225 /* This is here so breakpoints can be put on it. */
4227 wait_reading_process_output_1 ()
4231 /* Use a wrapper around select to work around a bug in gdb 5.3.
4232 Normally, the wrapper is optimzed away by inlining.
4234 If emacs is stopped inside select, the gdb backtrace doesn't
4235 show the function which called select, so it is practically
4236 impossible to step through wait_reading_process_output. */
4240 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4242 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4245 return select (n
, rfd
, wfd
, xfd
, tmo
);
4247 #define select select_wrapper
4250 /* Read and dispose of subprocess output while waiting for timeout to
4251 elapse and/or keyboard input to be available.
4254 timeout in seconds, or
4255 zero for no limit, or
4256 -1 means gobble data immediately available but don't wait for any.
4259 an additional duration to wait, measured in microseconds.
4260 If this is nonzero and time_limit is 0, then the timeout
4261 consists of MICROSECS only.
4263 READ_KBD is a lisp value:
4264 0 to ignore keyboard input, or
4265 1 to return when input is available, or
4266 -1 meaning caller will actually read the input, so don't throw to
4267 the quit handler, or
4269 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4270 output that arrives.
4272 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4273 (and gobble terminal input into the buffer if any arrives).
4275 If WAIT_PROC is specified, wait until something arrives from that
4276 process. The return value is true if we read some input from
4279 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4280 (suspending output from other processes). A negative value
4281 means don't run any timers either.
4283 If WAIT_PROC is specified, then the function returns true if we
4284 received input from that process before the timeout elapsed.
4285 Otherwise, return true if we received input from any process. */
4288 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4289 wait_for_cell
, wait_proc
, just_wait_proc
)
4290 int time_limit
, microsecs
, read_kbd
, do_display
;
4291 Lisp_Object wait_for_cell
;
4292 struct Lisp_Process
*wait_proc
;
4295 register int channel
, nfds
;
4296 SELECT_TYPE Available
;
4297 #ifdef NON_BLOCKING_CONNECT
4298 SELECT_TYPE Connecting
;
4301 int check_delay
, no_avail
;
4304 EMACS_TIME timeout
, end_time
;
4305 int wait_channel
= -1;
4306 int got_some_input
= 0;
4307 int count
= SPECPDL_INDEX ();
4309 FD_ZERO (&Available
);
4310 #ifdef NON_BLOCKING_CONNECT
4311 FD_ZERO (&Connecting
);
4314 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4315 if (wait_proc
!= NULL
)
4316 wait_channel
= wait_proc
->infd
;
4318 record_unwind_protect (wait_reading_process_output_unwind
,
4319 make_number (waiting_for_user_input_p
));
4320 waiting_for_user_input_p
= read_kbd
;
4322 /* Since we may need to wait several times,
4323 compute the absolute time to return at. */
4324 if (time_limit
|| microsecs
)
4326 EMACS_GET_TIME (end_time
);
4327 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4328 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4330 #ifdef POLL_INTERRUPTED_SYS_CALL
4331 /* AlainF 5-Jul-1996
4332 HP-UX 10.10 seem to have problems with signals coming in
4333 Causes "poll: interrupted system call" messages when Emacs is run
4335 Turn off periodic alarms (in case they are in use),
4336 and then turn off any other atimers. */
4338 turn_on_atimers (0);
4339 #endif /* POLL_INTERRUPTED_SYS_CALL */
4343 int timeout_reduced_for_timers
= 0;
4345 /* If calling from keyboard input, do not quit
4346 since we want to return C-g as an input character.
4347 Otherwise, do pending quit if requested. */
4351 else if (interrupt_input_pending
)
4352 handle_async_input ();
4355 /* Exit now if the cell we're waiting for became non-nil. */
4356 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4359 /* Compute time from now till when time limit is up */
4360 /* Exit if already run out */
4361 if (time_limit
== -1)
4363 /* -1 specified for timeout means
4364 gobble output available now
4365 but don't wait at all. */
4367 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4369 else if (time_limit
|| microsecs
)
4371 EMACS_GET_TIME (timeout
);
4372 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4373 if (EMACS_TIME_NEG_P (timeout
))
4378 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4381 /* Normally we run timers here.
4382 But not if wait_for_cell; in those cases,
4383 the wait is supposed to be short,
4384 and those callers cannot handle running arbitrary Lisp code here. */
4385 if (NILP (wait_for_cell
)
4386 && just_wait_proc
>= 0)
4388 EMACS_TIME timer_delay
;
4392 int old_timers_run
= timers_run
;
4393 struct buffer
*old_buffer
= current_buffer
;
4395 timer_delay
= timer_check (1);
4397 /* If a timer has run, this might have changed buffers
4398 an alike. Make read_key_sequence aware of that. */
4399 if (timers_run
!= old_timers_run
4400 && old_buffer
!= current_buffer
4401 && waiting_for_user_input_p
== -1)
4402 record_asynch_buffer_change ();
4404 if (timers_run
!= old_timers_run
&& do_display
)
4405 /* We must retry, since a timer may have requeued itself
4406 and that could alter the time_delay. */
4407 redisplay_preserve_echo_area (9);
4411 while (!detect_input_pending ());
4413 /* If there is unread keyboard input, also return. */
4415 && requeued_events_pending_p ())
4418 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4420 EMACS_TIME difference
;
4421 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4422 if (EMACS_TIME_NEG_P (difference
))
4424 timeout
= timer_delay
;
4425 timeout_reduced_for_timers
= 1;
4428 /* If time_limit is -1, we are not going to wait at all. */
4429 else if (time_limit
!= -1)
4431 /* This is so a breakpoint can be put here. */
4432 wait_reading_process_output_1 ();
4436 /* Cause C-g and alarm signals to take immediate action,
4437 and cause input available signals to zero out timeout.
4439 It is important that we do this before checking for process
4440 activity. If we get a SIGCHLD after the explicit checks for
4441 process activity, timeout is the only way we will know. */
4443 set_waiting_for_input (&timeout
);
4445 /* If status of something has changed, and no input is
4446 available, notify the user of the change right away. After
4447 this explicit check, we'll let the SIGCHLD handler zap
4448 timeout to get our attention. */
4449 if (update_tick
!= process_tick
&& do_display
)
4452 #ifdef NON_BLOCKING_CONNECT
4456 Atemp
= input_wait_mask
;
4458 /* On Mac OS X 10.0, the SELECT system call always says input is
4459 present (for reading) at stdin, even when none is. This
4460 causes the call to SELECT below to return 1 and
4461 status_notify not to be called. As a result output of
4462 subprocesses are incorrectly discarded.
4466 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4468 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4469 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4472 #ifdef NON_BLOCKING_CONNECT
4473 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4477 (SELECT_TYPE
*)0, &timeout
)
4480 /* It's okay for us to do this and then continue with
4481 the loop, since timeout has already been zeroed out. */
4482 clear_waiting_for_input ();
4483 status_notify (NULL
);
4487 /* Don't wait for output from a non-running process. Just
4488 read whatever data has already been received. */
4489 if (wait_proc
&& wait_proc
->raw_status_new
)
4490 update_status (wait_proc
);
4492 && ! EQ (wait_proc
->status
, Qrun
)
4493 && ! EQ (wait_proc
->status
, Qconnect
))
4495 int nread
, total_nread
= 0;
4497 clear_waiting_for_input ();
4498 XSETPROCESS (proc
, wait_proc
);
4500 /* Read data from the process, until we exhaust it. */
4501 while (wait_proc
->infd
>= 0)
4503 nread
= read_process_output (proc
, wait_proc
->infd
);
4509 total_nread
+= nread
;
4511 else if (nread
== -1 && EIO
== errno
)
4515 else if (nread
== -1 && EAGAIN
== errno
)
4519 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4523 if (total_nread
> 0 && do_display
)
4524 redisplay_preserve_echo_area (10);
4529 /* Wait till there is something to do */
4531 if (wait_proc
&& just_wait_proc
)
4533 if (wait_proc
->infd
< 0) /* Terminated */
4535 FD_SET (wait_proc
->infd
, &Available
);
4537 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4539 else if (!NILP (wait_for_cell
))
4541 Available
= non_process_wait_mask
;
4543 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4548 Available
= non_keyboard_wait_mask
;
4550 Available
= input_wait_mask
;
4551 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4552 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4555 /* If frame size has changed or the window is newly mapped,
4556 redisplay now, before we start to wait. There is a race
4557 condition here; if a SIGIO arrives between now and the select
4558 and indicates that a frame is trashed, the select may block
4559 displaying a trashed screen. */
4560 if (frame_garbaged
&& do_display
)
4562 clear_waiting_for_input ();
4563 redisplay_preserve_echo_area (11);
4565 set_waiting_for_input (&timeout
);
4569 if (read_kbd
&& detect_input_pending ())
4576 #ifdef NON_BLOCKING_CONNECT
4578 Connecting
= connect_wait_mask
;
4581 #ifdef ADAPTIVE_READ_BUFFERING
4582 /* Set the timeout for adaptive read buffering if any
4583 process has non-zero read_output_skip and non-zero
4584 read_output_delay, and we are not reading output for a
4585 specific wait_channel. It is not executed if
4586 Vprocess_adaptive_read_buffering is nil. */
4587 if (process_output_skip
&& check_delay
> 0)
4589 int usecs
= EMACS_USECS (timeout
);
4590 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4591 usecs
= READ_OUTPUT_DELAY_MAX
;
4592 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4594 proc
= chan_process
[channel
];
4597 /* Find minimum non-zero read_output_delay among the
4598 processes with non-zero read_output_skip. */
4599 if (XPROCESS (proc
)->read_output_delay
> 0)
4602 if (!XPROCESS (proc
)->read_output_skip
)
4604 FD_CLR (channel
, &Available
);
4605 XPROCESS (proc
)->read_output_skip
= 0;
4606 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4607 usecs
= XPROCESS (proc
)->read_output_delay
;
4610 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4611 process_output_skip
= 0;
4615 nfds
= select (max (max (max_process_desc
, max_keyboard_desc
),
4618 #ifdef NON_BLOCKING_CONNECT
4619 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4623 (SELECT_TYPE
*)0, &timeout
);
4628 /* Make C-g and alarm signals set flags again */
4629 clear_waiting_for_input ();
4631 /* If we woke up due to SIGWINCH, actually change size now. */
4632 do_pending_window_change (0);
4634 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4635 /* We wanted the full specified time, so return now. */
4639 if (xerrno
== EINTR
)
4642 /* Ultrix select seems to return ENOMEM when it is
4643 interrupted. Treat it just like EINTR. Bleah. Note
4644 that we want to test for the "ultrix" CPP symbol, not
4645 "__ultrix__"; the latter is only defined under GCC, but
4646 not by DEC's bundled CC. -JimB */
4647 else if (xerrno
== ENOMEM
)
4651 /* This happens for no known reason on ALLIANT.
4652 I am guessing that this is the right response. -- RMS. */
4653 else if (xerrno
== EFAULT
)
4656 else if (xerrno
== EBADF
)
4659 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4660 the child's closure of the pts gives the parent a SIGHUP, and
4661 the ptc file descriptor is automatically closed,
4662 yielding EBADF here or at select() call above.
4663 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4664 in m/ibmrt-aix.h), and here we just ignore the select error.
4665 Cleanup occurs c/o status_notify after SIGCLD. */
4666 no_avail
= 1; /* Cannot depend on values returned */
4672 error ("select error: %s", emacs_strerror (xerrno
));
4677 FD_ZERO (&Available
);
4678 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4681 #if defined(sun) && !defined(USG5_4)
4682 if (nfds
> 0 && keyboard_bit_set (&Available
)
4684 /* System sometimes fails to deliver SIGIO.
4686 David J. Mackenzie says that Emacs doesn't compile under
4687 Solaris if this code is enabled, thus the USG5_4 in the CPP
4688 conditional. "I haven't noticed any ill effects so far.
4689 If you find a Solaris expert somewhere, they might know
4691 kill (getpid (), SIGIO
);
4694 #if 0 /* When polling is used, interrupt_input is 0,
4695 so get_input_pending should read the input.
4696 So this should not be needed. */
4697 /* If we are using polling for input,
4698 and we see input available, make it get read now.
4699 Otherwise it might not actually get read for a second.
4700 And on hpux, since we turn off polling in wait_reading_process_output,
4701 it might never get read at all if we don't spend much time
4702 outside of wait_reading_process_output. */
4703 if (read_kbd
&& interrupt_input
4704 && keyboard_bit_set (&Available
)
4705 && input_polling_used ())
4706 kill (getpid (), SIGALRM
);
4709 /* Check for keyboard input */
4710 /* If there is any, return immediately
4711 to give it higher priority than subprocesses */
4715 int old_timers_run
= timers_run
;
4716 struct buffer
*old_buffer
= current_buffer
;
4719 if (detect_input_pending_run_timers (do_display
))
4721 swallow_events (do_display
);
4722 if (detect_input_pending_run_timers (do_display
))
4726 /* If a timer has run, this might have changed buffers
4727 an alike. Make read_key_sequence aware of that. */
4728 if (timers_run
!= old_timers_run
4729 && waiting_for_user_input_p
== -1
4730 && old_buffer
!= current_buffer
)
4731 record_asynch_buffer_change ();
4737 /* If there is unread keyboard input, also return. */
4739 && requeued_events_pending_p ())
4742 /* If we are not checking for keyboard input now,
4743 do process events (but don't run any timers).
4744 This is so that X events will be processed.
4745 Otherwise they may have to wait until polling takes place.
4746 That would causes delays in pasting selections, for example.
4748 (We used to do this only if wait_for_cell.) */
4749 if (read_kbd
== 0 && detect_input_pending ())
4751 swallow_events (do_display
);
4752 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4753 if (detect_input_pending ())
4758 /* Exit now if the cell we're waiting for became non-nil. */
4759 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4763 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4764 go read it. This can happen with X on BSD after logging out.
4765 In that case, there really is no input and no SIGIO,
4766 but select says there is input. */
4768 if (read_kbd
&& interrupt_input
4769 && keyboard_bit_set (&Available
) && ! noninteractive
)
4770 kill (getpid (), SIGIO
);
4774 got_some_input
|= nfds
> 0;
4776 /* If checking input just got us a size-change event from X,
4777 obey it now if we should. */
4778 if (read_kbd
|| ! NILP (wait_for_cell
))
4779 do_pending_window_change (0);
4781 /* Check for data from a process. */
4782 if (no_avail
|| nfds
== 0)
4785 /* Really FIRST_PROC_DESC should be 0 on Unix,
4786 but this is safer in the short run. */
4787 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4789 if (FD_ISSET (channel
, &Available
)
4790 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4794 /* If waiting for this channel, arrange to return as
4795 soon as no more input to be processed. No more
4797 if (wait_channel
== channel
)
4803 proc
= chan_process
[channel
];
4807 /* If this is a server stream socket, accept connection. */
4808 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4810 server_accept_connection (proc
, channel
);
4814 /* Read data from the process, starting with our
4815 buffered-ahead character if we have one. */
4817 nread
= read_process_output (proc
, channel
);
4820 /* Since read_process_output can run a filter,
4821 which can call accept-process-output,
4822 don't try to read from any other processes
4823 before doing the select again. */
4824 FD_ZERO (&Available
);
4827 redisplay_preserve_echo_area (12);
4830 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4833 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4834 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4836 else if (nread
== -1 && errno
== EAGAIN
)
4840 else if (nread
== -1 && errno
== EAGAIN
)
4842 /* Note that we cannot distinguish between no input
4843 available now and a closed pipe.
4844 With luck, a closed pipe will be accompanied by
4845 subprocess termination and SIGCHLD. */
4846 else if (nread
== 0 && !NETCONN_P (proc
))
4848 #endif /* O_NDELAY */
4849 #endif /* O_NONBLOCK */
4851 /* On some OSs with ptys, when the process on one end of
4852 a pty exits, the other end gets an error reading with
4853 errno = EIO instead of getting an EOF (0 bytes read).
4854 Therefore, if we get an error reading and errno =
4855 EIO, just continue, because the child process has
4856 exited and should clean itself up soon (e.g. when we
4859 However, it has been known to happen that the SIGCHLD
4860 got lost. So raise the signal again just in case.
4862 else if (nread
== -1 && errno
== EIO
)
4864 /* Clear the descriptor now, so we only raise the signal once. */
4865 FD_CLR (channel
, &input_wait_mask
);
4866 FD_CLR (channel
, &non_keyboard_wait_mask
);
4868 kill (getpid (), SIGCHLD
);
4870 #endif /* HAVE_PTYS */
4871 /* If we can detect process termination, don't consider the process
4872 gone just because its pipe is closed. */
4874 else if (nread
== 0 && !NETCONN_P (proc
))
4879 /* Preserve status of processes already terminated. */
4880 XPROCESS (proc
)->tick
= ++process_tick
;
4881 deactivate_process (proc
);
4882 if (XPROCESS (proc
)->raw_status_new
)
4883 update_status (XPROCESS (proc
));
4884 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4885 XPROCESS (proc
)->status
4886 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4889 #ifdef NON_BLOCKING_CONNECT
4890 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4891 && FD_ISSET (channel
, &connect_wait_mask
))
4893 struct Lisp_Process
*p
;
4895 FD_CLR (channel
, &connect_wait_mask
);
4896 if (--num_pending_connects
< 0)
4899 proc
= chan_process
[channel
];
4903 p
= XPROCESS (proc
);
4906 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4907 So only use it on systems where it is known to work. */
4909 int xlen
= sizeof(xerrno
);
4910 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4915 struct sockaddr pname
;
4916 int pnamelen
= sizeof(pname
);
4918 /* If connection failed, getpeername will fail. */
4920 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4922 /* Obtain connect failure code through error slippage. */
4925 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4932 p
->tick
= ++process_tick
;
4933 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4934 deactivate_process (proc
);
4939 /* Execute the sentinel here. If we had relied on
4940 status_notify to do it later, it will read input
4941 from the process before calling the sentinel. */
4942 exec_sentinel (proc
, build_string ("open\n"));
4943 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4945 FD_SET (p
->infd
, &input_wait_mask
);
4946 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4950 #endif /* NON_BLOCKING_CONNECT */
4951 } /* end for each file descriptor */
4952 } /* end while exit conditions not met */
4954 unbind_to (count
, Qnil
);
4956 /* If calling from keyboard input, do not quit
4957 since we want to return C-g as an input character.
4958 Otherwise, do pending quit if requested. */
4961 /* Prevent input_pending from remaining set if we quit. */
4962 clear_input_pending ();
4965 #ifdef POLL_INTERRUPTED_SYS_CALL
4966 /* AlainF 5-Jul-1996
4967 HP-UX 10.10 seems to have problems with signals coming in
4968 Causes "poll: interrupted system call" messages when Emacs is run
4970 Turn periodic alarms back on */
4972 #endif /* POLL_INTERRUPTED_SYS_CALL */
4974 return got_some_input
;
4977 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4980 read_process_output_call (fun_and_args
)
4981 Lisp_Object fun_and_args
;
4983 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4987 read_process_output_error_handler (error
)
4990 cmd_error_internal (error
, "error in process filter: ");
4992 update_echo_area ();
4993 Fsleep_for (make_number (2), Qnil
);
4997 /* Read pending output from the process channel,
4998 starting with our buffered-ahead character if we have one.
4999 Yield number of decoded characters read.
5001 This function reads at most 4096 characters.
5002 If you want to read all available subprocess output,
5003 you must call it repeatedly until it returns zero.
5005 The characters read are decoded according to PROC's coding-system
5009 read_process_output (proc
, channel
)
5011 register int channel
;
5013 register int nbytes
;
5015 register Lisp_Object outstream
;
5016 register struct buffer
*old
= current_buffer
;
5017 register struct Lisp_Process
*p
= XPROCESS (proc
);
5018 register int opoint
;
5019 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5020 int carryover
= p
->decoding_carryover
;
5024 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5026 vs
= get_vms_process_pointer (p
->pid
);
5030 return (0); /* Really weird if it does this */
5031 if (!(vs
->iosb
[0] & 1))
5032 return -1; /* I/O error */
5035 error ("Could not get VMS process pointer");
5036 chars
= vs
->inputBuffer
;
5037 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
5040 start_vms_process_read (vs
); /* Crank up the next read on the process */
5041 return 1; /* Nothing worth printing, say we got 1 */
5045 /* The data carried over in the previous decoding (which are at
5046 the tail of decoding buffer) should be prepended to the new
5047 data read to decode all together. */
5048 chars
= (char *) alloca (nbytes
+ carryover
);
5049 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
5050 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
5054 chars
= (char *) alloca (carryover
+ readmax
);
5056 /* See the comment above. */
5057 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5059 #ifdef DATAGRAM_SOCKETS
5060 /* We have a working select, so proc_buffered_char is always -1. */
5061 if (DATAGRAM_CHAN_P (channel
))
5063 int len
= datagram_address
[channel
].len
;
5064 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5065 0, datagram_address
[channel
].sa
, &len
);
5069 if (proc_buffered_char
[channel
] < 0)
5071 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5072 #ifdef ADAPTIVE_READ_BUFFERING
5073 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5075 int delay
= p
->read_output_delay
;
5078 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5081 process_output_delay_count
++;
5082 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5085 else if (delay
> 0 && (nbytes
== readmax
))
5087 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5089 process_output_delay_count
--;
5091 p
->read_output_delay
= delay
;
5094 p
->read_output_skip
= 1;
5095 process_output_skip
= 1;
5102 chars
[carryover
] = proc_buffered_char
[channel
];
5103 proc_buffered_char
[channel
] = -1;
5104 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5108 nbytes
= nbytes
+ 1;
5110 #endif /* not VMS */
5112 p
->decoding_carryover
= 0;
5114 /* At this point, NBYTES holds number of bytes just received
5115 (including the one in proc_buffered_char[channel]). */
5118 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5120 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5123 /* Now set NBYTES how many bytes we must decode. */
5124 nbytes
+= carryover
;
5126 /* Read and dispose of the process output. */
5127 outstream
= p
->filter
;
5128 if (!NILP (outstream
))
5130 /* We inhibit quit here instead of just catching it so that
5131 hitting ^G when a filter happens to be running won't screw
5133 int count
= SPECPDL_INDEX ();
5134 Lisp_Object odeactivate
;
5135 Lisp_Object obuffer
, okeymap
;
5137 int outer_running_asynch_code
= running_asynch_code
;
5138 int waiting
= waiting_for_user_input_p
;
5140 /* No need to gcpro these, because all we do with them later
5141 is test them for EQness, and none of them should be a string. */
5142 odeactivate
= Vdeactivate_mark
;
5143 XSETBUFFER (obuffer
, current_buffer
);
5144 okeymap
= current_buffer
->keymap
;
5146 specbind (Qinhibit_quit
, Qt
);
5147 specbind (Qlast_nonmenu_event
, Qt
);
5149 /* In case we get recursively called,
5150 and we already saved the match data nonrecursively,
5151 save the same match data in safely recursive fashion. */
5152 if (outer_running_asynch_code
)
5155 /* Don't clobber the CURRENT match data, either! */
5156 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5157 restore_search_regs ();
5158 record_unwind_save_match_data ();
5159 Fset_match_data (tem
, Qt
);
5162 /* For speed, if a search happens within this code,
5163 save the match data in a special nonrecursive fashion. */
5164 running_asynch_code
= 1;
5166 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5167 text
= coding
->dst_object
;
5168 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5169 /* A new coding system might be found. */
5170 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5172 p
->decode_coding_system
= Vlast_coding_system_used
;
5174 /* Don't call setup_coding_system for
5175 proc_decode_coding_system[channel] here. It is done in
5176 detect_coding called via decode_coding above. */
5178 /* If a coding system for encoding is not yet decided, we set
5179 it as the same as coding-system for decoding.
5181 But, before doing that we must check if
5182 proc_encode_coding_system[p->outfd] surely points to a
5183 valid memory because p->outfd will be changed once EOF is
5184 sent to the process. */
5185 if (NILP (p
->encode_coding_system
)
5186 && proc_encode_coding_system
[p
->outfd
])
5188 p
->encode_coding_system
5189 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5190 setup_coding_system (p
->encode_coding_system
,
5191 proc_encode_coding_system
[p
->outfd
]);
5195 if (coding
->carryover_bytes
> 0)
5197 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5198 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5199 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5200 coding
->carryover_bytes
);
5201 p
->decoding_carryover
= coding
->carryover_bytes
;
5203 /* Adjust the multibyteness of TEXT to that of the filter. */
5204 if (!p
->filter_multibyte
!= !STRING_MULTIBYTE (text
))
5205 text
= (STRING_MULTIBYTE (text
)
5206 ? Fstring_as_unibyte (text
)
5207 : Fstring_to_multibyte (text
));
5208 if (SBYTES (text
) > 0)
5209 internal_condition_case_1 (read_process_output_call
,
5211 Fcons (proc
, Fcons (text
, Qnil
))),
5212 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5213 read_process_output_error_handler
);
5215 /* If we saved the match data nonrecursively, restore it now. */
5216 restore_search_regs ();
5217 running_asynch_code
= outer_running_asynch_code
;
5219 /* Handling the process output should not deactivate the mark. */
5220 Vdeactivate_mark
= odeactivate
;
5222 /* Restore waiting_for_user_input_p as it was
5223 when we were called, in case the filter clobbered it. */
5224 waiting_for_user_input_p
= waiting
;
5226 #if 0 /* Call record_asynch_buffer_change unconditionally,
5227 because we might have changed minor modes or other things
5228 that affect key bindings. */
5229 if (! EQ (Fcurrent_buffer (), obuffer
)
5230 || ! EQ (current_buffer
->keymap
, okeymap
))
5232 /* But do it only if the caller is actually going to read events.
5233 Otherwise there's no need to make him wake up, and it could
5234 cause trouble (for example it would make sit_for return). */
5235 if (waiting_for_user_input_p
== -1)
5236 record_asynch_buffer_change ();
5239 start_vms_process_read (vs
);
5241 unbind_to (count
, Qnil
);
5245 /* If no filter, write into buffer if it isn't dead. */
5246 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5248 Lisp_Object old_read_only
;
5249 int old_begv
, old_zv
;
5250 int old_begv_byte
, old_zv_byte
;
5251 Lisp_Object odeactivate
;
5252 int before
, before_byte
;
5257 odeactivate
= Vdeactivate_mark
;
5259 Fset_buffer (p
->buffer
);
5261 opoint_byte
= PT_BYTE
;
5262 old_read_only
= current_buffer
->read_only
;
5265 old_begv_byte
= BEGV_BYTE
;
5266 old_zv_byte
= ZV_BYTE
;
5268 current_buffer
->read_only
= Qnil
;
5270 /* Insert new output into buffer
5271 at the current end-of-output marker,
5272 thus preserving logical ordering of input and output. */
5273 if (XMARKER (p
->mark
)->buffer
)
5274 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5275 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5278 SET_PT_BOTH (ZV
, ZV_BYTE
);
5280 before_byte
= PT_BYTE
;
5282 /* If the output marker is outside of the visible region, save
5283 the restriction and widen. */
5284 if (! (BEGV
<= PT
&& PT
<= ZV
))
5287 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5288 text
= coding
->dst_object
;
5289 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5290 /* A new coding system might be found. See the comment in the
5291 similar code in the previous `if' block. */
5292 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5294 p
->decode_coding_system
= Vlast_coding_system_used
;
5295 if (NILP (p
->encode_coding_system
)
5296 && proc_encode_coding_system
[p
->outfd
])
5298 p
->encode_coding_system
5299 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5300 setup_coding_system (p
->encode_coding_system
,
5301 proc_encode_coding_system
[p
->outfd
]);
5304 if (coding
->carryover_bytes
> 0)
5306 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5307 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5308 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5309 coding
->carryover_bytes
);
5310 p
->decoding_carryover
= coding
->carryover_bytes
;
5312 /* Adjust the multibyteness of TEXT to that of the buffer. */
5313 if (NILP (current_buffer
->enable_multibyte_characters
)
5314 != ! STRING_MULTIBYTE (text
))
5315 text
= (STRING_MULTIBYTE (text
)
5316 ? Fstring_as_unibyte (text
)
5317 : Fstring_to_multibyte (text
));
5318 /* Insert before markers in case we are inserting where
5319 the buffer's mark is, and the user's next command is Meta-y. */
5320 insert_from_string_before_markers (text
, 0, 0,
5321 SCHARS (text
), SBYTES (text
), 0);
5323 /* Make sure the process marker's position is valid when the
5324 process buffer is changed in the signal_after_change above.
5325 W3 is known to do that. */
5326 if (BUFFERP (p
->buffer
)
5327 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5328 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5330 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5332 update_mode_lines
++;
5334 /* Make sure opoint and the old restrictions
5335 float ahead of any new text just as point would. */
5336 if (opoint
>= before
)
5338 opoint
+= PT
- before
;
5339 opoint_byte
+= PT_BYTE
- before_byte
;
5341 if (old_begv
> before
)
5343 old_begv
+= PT
- before
;
5344 old_begv_byte
+= PT_BYTE
- before_byte
;
5346 if (old_zv
>= before
)
5348 old_zv
+= PT
- before
;
5349 old_zv_byte
+= PT_BYTE
- before_byte
;
5352 /* If the restriction isn't what it should be, set it. */
5353 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5354 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5356 /* Handling the process output should not deactivate the mark. */
5357 Vdeactivate_mark
= odeactivate
;
5359 current_buffer
->read_only
= old_read_only
;
5360 SET_PT_BOTH (opoint
, opoint_byte
);
5361 set_buffer_internal (old
);
5364 start_vms_process_read (vs
);
5369 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5371 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5372 This is intended for use by asynchronous process output filters and sentinels. */)
5375 return (waiting_for_user_input_p
? Qt
: Qnil
);
5378 /* Sending data to subprocess */
5380 jmp_buf send_process_frame
;
5381 Lisp_Object process_sent_to
;
5384 send_process_trap ()
5386 SIGNAL_THREAD_CHECK (SIGPIPE
);
5391 sigunblock (sigmask (SIGPIPE
));
5392 longjmp (send_process_frame
, 1);
5395 /* Send some data to process PROC.
5396 BUF is the beginning of the data; LEN is the number of characters.
5397 OBJECT is the Lisp object that the data comes from. If OBJECT is
5398 nil or t, it means that the data comes from C string.
5400 If OBJECT is not nil, the data is encoded by PROC's coding-system
5401 for encoding before it is sent.
5403 This function can evaluate Lisp code and can garbage collect. */
5406 send_process (proc
, buf
, len
, object
)
5407 volatile Lisp_Object proc
;
5408 unsigned char *volatile buf
;
5410 volatile Lisp_Object object
;
5412 /* Use volatile to protect variables from being clobbered by longjmp. */
5413 struct Lisp_Process
*p
= XPROCESS (proc
);
5415 struct coding_system
*coding
;
5416 struct gcpro gcpro1
;
5417 SIGTYPE (*volatile old_sigpipe
) ();
5422 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5425 if (p
->raw_status_new
)
5427 if (! EQ (p
->status
, Qrun
))
5428 error ("Process %s not running", SDATA (p
->name
));
5430 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5432 coding
= proc_encode_coding_system
[p
->outfd
];
5433 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5435 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5436 || (BUFFERP (object
)
5437 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5440 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5441 /* The coding system for encoding was changed to raw-text
5442 because we sent a unibyte text previously. Now we are
5443 sending a multibyte text, thus we must encode it by the
5444 original coding system specified for the current process. */
5445 setup_coding_system (p
->encode_coding_system
, coding
);
5446 coding
->src_multibyte
= 1;
5450 /* For sending a unibyte text, character code conversion should
5451 not take place but EOL conversion should. So, setup raw-text
5452 or one of the subsidiary if we have not yet done it. */
5453 if (CODING_REQUIRE_ENCODING (coding
))
5455 if (CODING_REQUIRE_FLUSHING (coding
))
5457 /* But, before changing the coding, we must flush out data. */
5458 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5459 send_process (proc
, "", 0, Qt
);
5460 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5462 setup_coding_system (raw_text_coding_system
5463 (Vlast_coding_system_used
),
5465 coding
->src_multibyte
= 0;
5468 coding
->dst_multibyte
= 0;
5470 if (CODING_REQUIRE_ENCODING (coding
))
5472 coding
->dst_object
= Qt
;
5473 if (BUFFERP (object
))
5475 int from_byte
, from
, to
;
5476 int save_pt
, save_pt_byte
;
5477 struct buffer
*cur
= current_buffer
;
5479 set_buffer_internal (XBUFFER (object
));
5480 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5482 from_byte
= PTR_BYTE_POS (buf
);
5483 from
= BYTE_TO_CHAR (from_byte
);
5484 to
= BYTE_TO_CHAR (from_byte
+ len
);
5485 TEMP_SET_PT_BOTH (from
, from_byte
);
5486 encode_coding_object (coding
, object
, from
, from_byte
,
5487 to
, from_byte
+ len
, Qt
);
5488 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5489 set_buffer_internal (cur
);
5491 else if (STRINGP (object
))
5493 encode_coding_string (coding
, object
, 1);
5497 coding
->dst_object
= make_unibyte_string (buf
, len
);
5498 coding
->produced
= len
;
5501 len
= coding
->produced
;
5502 buf
= SDATA (coding
->dst_object
);
5506 vs
= get_vms_process_pointer (p
->pid
);
5508 error ("Could not find this process: %x", p
->pid
);
5509 else if (write_to_vms_process (vs
, buf
, len
))
5513 if (pty_max_bytes
== 0)
5515 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5516 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5517 if (pty_max_bytes
< 0)
5518 pty_max_bytes
= 250;
5520 pty_max_bytes
= 250;
5522 /* Deduct one, to leave space for the eof. */
5526 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5527 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5528 when returning with longjmp despite being declared volatile. */
5529 if (!setjmp (send_process_frame
))
5531 process_sent_to
= proc
;
5536 /* Decide how much data we can send in one batch.
5537 Long lines need to be split into multiple batches. */
5540 /* Starting this at zero is always correct when not the first
5541 iteration because the previous iteration ended by sending C-d.
5542 It may not be correct for the first iteration
5543 if a partial line was sent in a separate send_process call.
5544 If that proves worth handling, we need to save linepos
5545 in the process object. */
5547 unsigned char *ptr
= (unsigned char *) buf
;
5548 unsigned char *end
= (unsigned char *) buf
+ len
;
5550 /* Scan through this text for a line that is too long. */
5551 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5559 /* If we found one, break the line there
5560 and put in a C-d to force the buffer through. */
5564 /* Send this batch, using one or more write calls. */
5567 int outfd
= p
->outfd
;
5568 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5569 #ifdef DATAGRAM_SOCKETS
5570 if (DATAGRAM_CHAN_P (outfd
))
5572 rv
= sendto (outfd
, (char *) buf
, this,
5573 0, datagram_address
[outfd
].sa
,
5574 datagram_address
[outfd
].len
);
5575 if (rv
< 0 && errno
== EMSGSIZE
)
5577 signal (SIGPIPE
, old_sigpipe
);
5578 report_file_error ("sending datagram",
5579 Fcons (proc
, Qnil
));
5585 rv
= emacs_write (outfd
, (char *) buf
, this);
5586 #ifdef ADAPTIVE_READ_BUFFERING
5587 if (p
->read_output_delay
> 0
5588 && p
->adaptive_read_buffering
== 1)
5590 p
->read_output_delay
= 0;
5591 process_output_delay_count
--;
5592 p
->read_output_skip
= 0;
5596 signal (SIGPIPE
, old_sigpipe
);
5602 || errno
== EWOULDBLOCK
5608 /* Buffer is full. Wait, accepting input;
5609 that may allow the program
5610 to finish doing output and read more. */
5614 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5615 /* A gross hack to work around a bug in FreeBSD.
5616 In the following sequence, read(2) returns
5620 write(2) 954 bytes, get EAGAIN
5621 read(2) 1024 bytes in process_read_output
5622 read(2) 11 bytes in process_read_output
5624 That is, read(2) returns more bytes than have
5625 ever been written successfully. The 1033 bytes
5626 read are the 1022 bytes written successfully
5627 after processing (for example with CRs added if
5628 the terminal is set up that way which it is
5629 here). The same bytes will be seen again in a
5630 later read(2), without the CRs. */
5632 if (errno
== EAGAIN
)
5635 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5637 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5639 /* Running filters might relocate buffers or strings.
5640 Arrange to relocate BUF. */
5641 if (BUFFERP (object
))
5642 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5643 else if (STRINGP (object
))
5644 offset
= buf
- SDATA (object
);
5646 #ifdef EMACS_HAS_USECS
5647 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5649 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5652 if (BUFFERP (object
))
5653 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5654 else if (STRINGP (object
))
5655 buf
= offset
+ SDATA (object
);
5660 /* This is a real error. */
5661 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5668 /* If we sent just part of the string, put in an EOF
5669 to force it through, before we send the rest. */
5671 Fprocess_send_eof (proc
);
5674 #endif /* not VMS */
5677 signal (SIGPIPE
, old_sigpipe
);
5679 proc
= process_sent_to
;
5680 p
= XPROCESS (proc
);
5682 p
->raw_status_new
= 0;
5683 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5684 p
->tick
= ++process_tick
;
5685 deactivate_process (proc
);
5687 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5689 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5696 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5698 doc
: /* Send current contents of region as input to PROCESS.
5699 PROCESS may be a process, a buffer, the name of a process or buffer, or
5700 nil, indicating the current buffer's process.
5701 Called from program, takes three arguments, PROCESS, START and END.
5702 If the region is more than 500 characters long,
5703 it is sent in several bunches. This may happen even for shorter regions.
5704 Output from processes can arrive in between bunches. */)
5705 (process
, start
, end
)
5706 Lisp_Object process
, start
, end
;
5711 proc
= get_process (process
);
5712 validate_region (&start
, &end
);
5714 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5715 move_gap (XINT (start
));
5717 start1
= CHAR_TO_BYTE (XINT (start
));
5718 end1
= CHAR_TO_BYTE (XINT (end
));
5719 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5720 Fcurrent_buffer ());
5725 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5727 doc
: /* Send PROCESS the contents of STRING as input.
5728 PROCESS may be a process, a buffer, the name of a process or buffer, or
5729 nil, indicating the current buffer's process.
5730 If STRING is more than 500 characters long,
5731 it is sent in several bunches. This may happen even for shorter strings.
5732 Output from processes can arrive in between bunches. */)
5734 Lisp_Object process
, string
;
5737 CHECK_STRING (string
);
5738 proc
= get_process (process
);
5739 send_process (proc
, SDATA (string
),
5740 SBYTES (string
), string
);
5744 /* Return the foreground process group for the tty/pty that
5745 the process P uses. */
5747 emacs_get_tty_pgrp (p
)
5748 struct Lisp_Process
*p
;
5753 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5756 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5757 master side. Try the slave side. */
5758 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5762 ioctl (fd
, TIOCGPGRP
, &gid
);
5766 #endif /* defined (TIOCGPGRP ) */
5771 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5772 Sprocess_running_child_p
, 0, 1, 0,
5773 doc
: /* Return t if PROCESS has given the terminal to a child.
5774 If the operating system does not make it possible to find out,
5775 return t unconditionally. */)
5777 Lisp_Object process
;
5779 /* Initialize in case ioctl doesn't exist or gives an error,
5780 in a way that will cause returning t. */
5783 struct Lisp_Process
*p
;
5785 proc
= get_process (process
);
5786 p
= XPROCESS (proc
);
5788 if (!EQ (p
->childp
, Qt
))
5789 error ("Process %s is not a subprocess",
5792 error ("Process %s is not active",
5795 gid
= emacs_get_tty_pgrp (p
);
5802 /* send a signal number SIGNO to PROCESS.
5803 If CURRENT_GROUP is t, that means send to the process group
5804 that currently owns the terminal being used to communicate with PROCESS.
5805 This is used for various commands in shell mode.
5806 If CURRENT_GROUP is lambda, that means send to the process group
5807 that currently owns the terminal, but only if it is NOT the shell itself.
5809 If NOMSG is zero, insert signal-announcements into process's buffers
5812 If we can, we try to signal PROCESS by sending control characters
5813 down the pty. This allows us to signal inferiors who have changed
5814 their uid, for which killpg would return an EPERM error. */
5817 process_send_signal (process
, signo
, current_group
, nomsg
)
5818 Lisp_Object process
;
5820 Lisp_Object current_group
;
5824 register struct Lisp_Process
*p
;
5828 proc
= get_process (process
);
5829 p
= XPROCESS (proc
);
5831 if (!EQ (p
->childp
, Qt
))
5832 error ("Process %s is not a subprocess",
5835 error ("Process %s is not active",
5839 current_group
= Qnil
;
5841 /* If we are using pgrps, get a pgrp number and make it negative. */
5842 if (NILP (current_group
))
5843 /* Send the signal to the shell's process group. */
5847 #ifdef SIGNALS_VIA_CHARACTERS
5848 /* If possible, send signals to the entire pgrp
5849 by sending an input character to it. */
5851 /* TERMIOS is the latest and bestest, and seems most likely to
5852 work. If the system has it, use it. */
5855 cc_t
*sig_char
= NULL
;
5857 tcgetattr (p
->infd
, &t
);
5862 sig_char
= &t
.c_cc
[VINTR
];
5866 sig_char
= &t
.c_cc
[VQUIT
];
5870 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5871 sig_char
= &t
.c_cc
[VSWTCH
];
5873 sig_char
= &t
.c_cc
[VSUSP
];
5878 if (sig_char
&& *sig_char
!= CDISABLE
)
5880 send_process (proc
, sig_char
, 1, Qnil
);
5883 /* If we can't send the signal with a character,
5884 fall through and send it another way. */
5885 #else /* ! HAVE_TERMIOS */
5887 /* On Berkeley descendants, the following IOCTL's retrieve the
5888 current control characters. */
5889 #if defined (TIOCGLTC) && defined (TIOCGETC)
5897 ioctl (p
->infd
, TIOCGETC
, &c
);
5898 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5901 ioctl (p
->infd
, TIOCGETC
, &c
);
5902 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5906 ioctl (p
->infd
, TIOCGLTC
, &lc
);
5907 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5909 #endif /* ! defined (SIGTSTP) */
5912 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5914 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5921 ioctl (p
->infd
, TCGETA
, &t
);
5922 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5925 ioctl (p
->infd
, TCGETA
, &t
);
5926 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5930 ioctl (p
->infd
, TCGETA
, &t
);
5931 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5933 #endif /* ! defined (SIGTSTP) */
5935 #else /* ! defined (TCGETA) */
5936 Your configuration files are messed up
.
5937 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
5938 you'd better be using one of the alternatives above! */
5939 #endif /* ! defined (TCGETA) */
5940 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5941 /* In this case, the code above should alway returns. */
5943 #endif /* ! defined HAVE_TERMIOS */
5945 /* The code above may fall through if it can't
5946 handle the signal. */
5947 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5950 /* Get the current pgrp using the tty itself, if we have that.
5951 Otherwise, use the pty to get the pgrp.
5952 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5953 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5954 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5955 His patch indicates that if TIOCGPGRP returns an error, then
5956 we should just assume that p->pid is also the process group id. */
5958 gid
= emacs_get_tty_pgrp (p
);
5961 /* If we can't get the information, assume
5962 the shell owns the tty. */
5965 /* It is not clear whether anything really can set GID to -1.
5966 Perhaps on some system one of those ioctls can or could do so.
5967 Or perhaps this is vestigial. */
5970 #else /* ! defined (TIOCGPGRP ) */
5971 /* Can't select pgrps on this system, so we know that
5972 the child itself heads the pgrp. */
5974 #endif /* ! defined (TIOCGPGRP ) */
5976 /* If current_group is lambda, and the shell owns the terminal,
5977 don't send any signal. */
5978 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5986 p
->raw_status_new
= 0;
5988 p
->tick
= ++process_tick
;
5990 status_notify (NULL
);
5992 #endif /* ! defined (SIGCONT) */
5995 send_process (proc
, "\003", 1, Qnil
); /* ^C */
6000 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
6005 sys$
forcex (&(p
->pid
), 0, 1);
6008 flush_pending_output (p
->infd
);
6012 /* If we don't have process groups, send the signal to the immediate
6013 subprocess. That isn't really right, but it's better than any
6014 obvious alternative. */
6017 kill (p
->pid
, signo
);
6021 /* gid may be a pid, or minus a pgrp's number */
6023 if (!NILP (current_group
))
6025 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6026 EMACS_KILLPG (gid
, signo
);
6033 #else /* ! defined (TIOCSIGSEND) */
6034 EMACS_KILLPG (gid
, signo
);
6035 #endif /* ! defined (TIOCSIGSEND) */
6038 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6039 doc
: /* Interrupt process PROCESS.
6040 PROCESS may be a process, a buffer, or the name of a process or buffer.
6041 No arg or nil means current buffer's process.
6042 Second arg CURRENT-GROUP non-nil means send signal to
6043 the current process-group of the process's controlling terminal
6044 rather than to the process's own process group.
6045 If the process is a shell, this means interrupt current subjob
6046 rather than the shell.
6048 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6049 don't send the signal. */)
6050 (process
, current_group
)
6051 Lisp_Object process
, current_group
;
6053 process_send_signal (process
, SIGINT
, current_group
, 0);
6057 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6058 doc
: /* Kill process PROCESS. May be process or name of one.
6059 See function `interrupt-process' for more details on usage. */)
6060 (process
, current_group
)
6061 Lisp_Object process
, current_group
;
6063 process_send_signal (process
, SIGKILL
, current_group
, 0);
6067 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6068 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6069 See function `interrupt-process' for more details on usage. */)
6070 (process
, current_group
)
6071 Lisp_Object process
, current_group
;
6073 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6077 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6078 doc
: /* Stop process PROCESS. May be process or name of one.
6079 See function `interrupt-process' for more details on usage.
6080 If PROCESS is a network process, inhibit handling of incoming traffic. */)
6081 (process
, current_group
)
6082 Lisp_Object process
, current_group
;
6085 if (PROCESSP (process
) && NETCONN_P (process
))
6087 struct Lisp_Process
*p
;
6089 p
= XPROCESS (process
);
6090 if (NILP (p
->command
)
6093 FD_CLR (p
->infd
, &input_wait_mask
);
6094 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6101 error ("No SIGTSTP support");
6103 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6108 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6109 doc
: /* Continue process PROCESS. May be process or name of one.
6110 See function `interrupt-process' for more details on usage.
6111 If PROCESS is a network process, resume handling of incoming traffic. */)
6112 (process
, current_group
)
6113 Lisp_Object process
, current_group
;
6116 if (PROCESSP (process
) && NETCONN_P (process
))
6118 struct Lisp_Process
*p
;
6120 p
= XPROCESS (process
);
6121 if (EQ (p
->command
, Qt
)
6123 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6125 FD_SET (p
->infd
, &input_wait_mask
);
6126 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6133 process_send_signal (process
, SIGCONT
, current_group
, 0);
6135 error ("No SIGCONT support");
6140 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6141 2, 2, "sProcess (name or number): \nnSignal code: ",
6142 doc
: /* Send PROCESS the signal with code SIGCODE.
6143 PROCESS may also be a number specifying the process id of the
6144 process to signal; in this case, the process need not be a child of
6146 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6148 Lisp_Object process
, sigcode
;
6152 if (INTEGERP (process
))
6154 pid
= XINT (process
);
6158 if (FLOATP (process
))
6160 pid
= (pid_t
) XFLOAT_DATA (process
);
6164 if (STRINGP (process
))
6167 if (tem
= Fget_process (process
), NILP (tem
))
6169 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6176 process
= get_process (process
);
6181 CHECK_PROCESS (process
);
6182 pid
= XPROCESS (process
)->pid
;
6184 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6188 #define parse_signal(NAME, VALUE) \
6189 else if (!xstricmp (name, NAME)) \
6190 XSETINT (sigcode, VALUE)
6192 if (INTEGERP (sigcode
))
6196 unsigned char *name
;
6198 CHECK_SYMBOL (sigcode
);
6199 name
= SDATA (SYMBOL_NAME (sigcode
));
6201 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6207 parse_signal ("usr1", SIGUSR1
);
6210 parse_signal ("usr2", SIGUSR2
);
6213 parse_signal ("term", SIGTERM
);
6216 parse_signal ("hup", SIGHUP
);
6219 parse_signal ("int", SIGINT
);
6222 parse_signal ("quit", SIGQUIT
);
6225 parse_signal ("ill", SIGILL
);
6228 parse_signal ("abrt", SIGABRT
);
6231 parse_signal ("emt", SIGEMT
);
6234 parse_signal ("kill", SIGKILL
);
6237 parse_signal ("fpe", SIGFPE
);
6240 parse_signal ("bus", SIGBUS
);
6243 parse_signal ("segv", SIGSEGV
);
6246 parse_signal ("sys", SIGSYS
);
6249 parse_signal ("pipe", SIGPIPE
);
6252 parse_signal ("alrm", SIGALRM
);
6255 parse_signal ("urg", SIGURG
);
6258 parse_signal ("stop", SIGSTOP
);
6261 parse_signal ("tstp", SIGTSTP
);
6264 parse_signal ("cont", SIGCONT
);
6267 parse_signal ("chld", SIGCHLD
);
6270 parse_signal ("ttin", SIGTTIN
);
6273 parse_signal ("ttou", SIGTTOU
);
6276 parse_signal ("io", SIGIO
);
6279 parse_signal ("xcpu", SIGXCPU
);
6282 parse_signal ("xfsz", SIGXFSZ
);
6285 parse_signal ("vtalrm", SIGVTALRM
);
6288 parse_signal ("prof", SIGPROF
);
6291 parse_signal ("winch", SIGWINCH
);
6294 parse_signal ("info", SIGINFO
);
6297 error ("Undefined signal name %s", name
);
6302 return make_number (kill (pid
, XINT (sigcode
)));
6305 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6306 doc
: /* Make PROCESS see end-of-file in its input.
6307 EOF comes after any text already sent to it.
6308 PROCESS may be a process, a buffer, the name of a process or buffer, or
6309 nil, indicating the current buffer's process.
6310 If PROCESS is a network connection, or is a process communicating
6311 through a pipe (as opposed to a pty), then you cannot send any more
6312 text to PROCESS after you call this function. */)
6314 Lisp_Object process
;
6317 struct coding_system
*coding
;
6319 if (DATAGRAM_CONN_P (process
))
6322 proc
= get_process (process
);
6323 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6325 /* Make sure the process is really alive. */
6326 if (XPROCESS (proc
)->raw_status_new
)
6327 update_status (XPROCESS (proc
));
6328 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6329 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6331 if (CODING_REQUIRE_FLUSHING (coding
))
6333 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6334 send_process (proc
, "", 0, Qnil
);
6338 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6340 if (XPROCESS (proc
)->pty_flag
)
6341 send_process (proc
, "\004", 1, Qnil
);
6344 int old_outfd
, new_outfd
;
6346 #ifdef HAVE_SHUTDOWN
6347 /* If this is a network connection, or socketpair is used
6348 for communication with the subprocess, call shutdown to cause EOF.
6349 (In some old system, shutdown to socketpair doesn't work.
6350 Then we just can't win.) */
6351 if (XPROCESS (proc
)->pid
== 0
6352 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6353 shutdown (XPROCESS (proc
)->outfd
, 1);
6354 /* In case of socketpair, outfd == infd, so don't close it. */
6355 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6356 emacs_close (XPROCESS (proc
)->outfd
);
6357 #else /* not HAVE_SHUTDOWN */
6358 emacs_close (XPROCESS (proc
)->outfd
);
6359 #endif /* not HAVE_SHUTDOWN */
6360 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6363 old_outfd
= XPROCESS (proc
)->outfd
;
6365 if (!proc_encode_coding_system
[new_outfd
])
6366 proc_encode_coding_system
[new_outfd
]
6367 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6368 bcopy (proc_encode_coding_system
[old_outfd
],
6369 proc_encode_coding_system
[new_outfd
],
6370 sizeof (struct coding_system
));
6371 bzero (proc_encode_coding_system
[old_outfd
],
6372 sizeof (struct coding_system
));
6374 XPROCESS (proc
)->outfd
= new_outfd
;
6380 /* Kill all processes associated with `buffer'.
6381 If `buffer' is nil, kill all processes */
6384 kill_buffer_processes (buffer
)
6387 Lisp_Object tail
, proc
;
6389 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6391 proc
= XCDR (XCAR (tail
));
6393 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6395 if (NETCONN_P (proc
))
6396 Fdelete_process (proc
);
6397 else if (XPROCESS (proc
)->infd
>= 0)
6398 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6403 /* On receipt of a signal that a child status has changed, loop asking
6404 about children with changed statuses until the system says there
6407 All we do is change the status; we do not run sentinels or print
6408 notifications. That is saved for the next time keyboard input is
6409 done, in order to avoid timing errors.
6411 ** WARNING: this can be called during garbage collection.
6412 Therefore, it must not be fooled by the presence of mark bits in
6415 ** USG WARNING: Although it is not obvious from the documentation
6416 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6417 signal() before executing at least one wait(), otherwise the
6418 handler will be called again, resulting in an infinite loop. The
6419 relevant portion of the documentation reads "SIGCLD signals will be
6420 queued and the signal-catching function will be continually
6421 reentered until the queue is empty". Invoking signal() causes the
6422 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6425 ** Malloc WARNING: This should never call malloc either directly or
6426 indirectly; if it does, that is a bug */
6430 sigchld_handler (signo
)
6433 int old_errno
= errno
;
6435 register struct Lisp_Process
*p
;
6436 extern EMACS_TIME
*input_available_clear_time
;
6438 SIGNAL_THREAD_CHECK (signo
);
6442 sigheld
|= sigbit (SIGCHLD
);
6454 #endif /* no WUNTRACED */
6455 /* Keep trying to get a status until we get a definitive result. */
6459 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6461 while (pid
< 0 && errno
== EINTR
);
6465 /* PID == 0 means no processes found, PID == -1 means a real
6466 failure. We have done all our job, so return. */
6468 /* USG systems forget handlers when they are used;
6469 must reestablish each time */
6470 #if defined (USG) && !defined (POSIX_SIGNALS)
6471 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6474 sigheld
&= ~sigbit (SIGCHLD
);
6482 #endif /* no WNOHANG */
6484 /* Find the process that signaled us, and record its status. */
6486 /* The process can have been deleted by Fdelete_process. */
6487 for (tail
= deleted_pid_list
; CONSP (tail
); tail
= XCDR (tail
))
6489 Lisp_Object xpid
= XCAR (tail
);
6490 if ((INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6491 || (FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6493 XSETCAR (tail
, Qnil
);
6494 goto sigchld_end_of_loop
;
6498 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6500 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6502 proc
= XCDR (XCAR (tail
));
6503 p
= XPROCESS (proc
);
6504 if (EQ (p
->childp
, Qt
) && p
->pid
== pid
)
6509 /* Look for an asynchronous process whose pid hasn't been filled
6512 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6514 proc
= XCDR (XCAR (tail
));
6515 p
= XPROCESS (proc
);
6521 /* Change the status of the process that was found. */
6524 union { int i
; WAITTYPE wt
; } u
;
6525 int clear_desc_flag
= 0;
6527 p
->tick
= ++process_tick
;
6529 p
->raw_status
= u
.i
;
6530 p
->raw_status_new
= 1;
6532 /* If process has terminated, stop waiting for its output. */
6533 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6535 clear_desc_flag
= 1;
6537 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6538 if (clear_desc_flag
)
6540 FD_CLR (p
->infd
, &input_wait_mask
);
6541 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6544 /* Tell wait_reading_process_output that it needs to wake up and
6546 if (input_available_clear_time
)
6547 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6550 /* There was no asynchronous process found for that pid: we have
6551 a synchronous process. */
6554 synch_process_alive
= 0;
6556 /* Report the status of the synchronous process. */
6558 synch_process_retcode
= WRETCODE (w
);
6559 else if (WIFSIGNALED (w
))
6560 synch_process_termsig
= WTERMSIG (w
);
6562 /* Tell wait_reading_process_output that it needs to wake up and
6564 if (input_available_clear_time
)
6565 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6568 sigchld_end_of_loop
:
6571 /* On some systems, we must return right away.
6572 If any more processes want to signal us, we will
6574 Otherwise (on systems that have WNOHANG), loop around
6575 to use up all the processes that have something to tell us. */
6576 #if (defined WINDOWSNT \
6577 || (defined USG && !defined GNU_LINUX \
6578 && !(defined HPUX && defined WNOHANG)))
6579 #if defined (USG) && ! defined (POSIX_SIGNALS)
6580 signal (signo
, sigchld_handler
);
6584 #endif /* USG, but not HPUX with WNOHANG */
6587 #endif /* SIGCHLD */
6591 exec_sentinel_unwind (data
)
6594 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6599 exec_sentinel_error_handler (error
)
6602 cmd_error_internal (error
, "error in process sentinel: ");
6604 update_echo_area ();
6605 Fsleep_for (make_number (2), Qnil
);
6610 exec_sentinel (proc
, reason
)
6611 Lisp_Object proc
, reason
;
6613 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6614 register struct Lisp_Process
*p
= XPROCESS (proc
);
6615 int count
= SPECPDL_INDEX ();
6616 int outer_running_asynch_code
= running_asynch_code
;
6617 int waiting
= waiting_for_user_input_p
;
6619 if (inhibit_sentinels
)
6622 /* No need to gcpro these, because all we do with them later
6623 is test them for EQness, and none of them should be a string. */
6624 odeactivate
= Vdeactivate_mark
;
6625 XSETBUFFER (obuffer
, current_buffer
);
6626 okeymap
= current_buffer
->keymap
;
6628 sentinel
= p
->sentinel
;
6629 if (NILP (sentinel
))
6632 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6633 assure that it gets restored no matter how the sentinel exits. */
6635 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6636 /* Inhibit quit so that random quits don't screw up a running filter. */
6637 specbind (Qinhibit_quit
, Qt
);
6638 specbind (Qlast_nonmenu_event
, Qt
);
6640 /* In case we get recursively called,
6641 and we already saved the match data nonrecursively,
6642 save the same match data in safely recursive fashion. */
6643 if (outer_running_asynch_code
)
6646 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6647 restore_search_regs ();
6648 record_unwind_save_match_data ();
6649 Fset_match_data (tem
, Qt
);
6652 /* For speed, if a search happens within this code,
6653 save the match data in a special nonrecursive fashion. */
6654 running_asynch_code
= 1;
6656 internal_condition_case_1 (read_process_output_call
,
6658 Fcons (proc
, Fcons (reason
, Qnil
))),
6659 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6660 exec_sentinel_error_handler
);
6662 /* If we saved the match data nonrecursively, restore it now. */
6663 restore_search_regs ();
6664 running_asynch_code
= outer_running_asynch_code
;
6666 Vdeactivate_mark
= odeactivate
;
6668 /* Restore waiting_for_user_input_p as it was
6669 when we were called, in case the filter clobbered it. */
6670 waiting_for_user_input_p
= waiting
;
6673 if (! EQ (Fcurrent_buffer (), obuffer
)
6674 || ! EQ (current_buffer
->keymap
, okeymap
))
6676 /* But do it only if the caller is actually going to read events.
6677 Otherwise there's no need to make him wake up, and it could
6678 cause trouble (for example it would make sit_for return). */
6679 if (waiting_for_user_input_p
== -1)
6680 record_asynch_buffer_change ();
6682 unbind_to (count
, Qnil
);
6685 /* Report all recent events of a change in process status
6686 (either run the sentinel or output a message).
6687 This is usually done while Emacs is waiting for keyboard input
6688 but can be done at other times. */
6691 status_notify (deleting_process
)
6692 struct Lisp_Process
*deleting_process
;
6694 register Lisp_Object proc
, buffer
;
6695 Lisp_Object tail
, msg
;
6696 struct gcpro gcpro1
, gcpro2
;
6700 /* We need to gcpro tail; if read_process_output calls a filter
6701 which deletes a process and removes the cons to which tail points
6702 from Vprocess_alist, and then causes a GC, tail is an unprotected
6706 /* Set this now, so that if new processes are created by sentinels
6707 that we run, we get called again to handle their status changes. */
6708 update_tick
= process_tick
;
6710 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6713 register struct Lisp_Process
*p
;
6715 proc
= Fcdr (XCAR (tail
));
6716 p
= XPROCESS (proc
);
6718 if (p
->tick
!= p
->update_tick
)
6720 p
->update_tick
= p
->tick
;
6722 /* If process is still active, read any output that remains. */
6723 while (! EQ (p
->filter
, Qt
)
6724 && ! EQ (p
->status
, Qconnect
)
6725 && ! EQ (p
->status
, Qlisten
)
6726 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6728 && p
!= deleting_process
6729 && read_process_output (proc
, p
->infd
) > 0);
6733 /* Get the text to use for the message. */
6734 if (p
->raw_status_new
)
6736 msg
= status_message (p
);
6738 /* If process is terminated, deactivate it or delete it. */
6740 if (CONSP (p
->status
))
6741 symbol
= XCAR (p
->status
);
6743 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6744 || EQ (symbol
, Qclosed
))
6746 if (delete_exited_processes
)
6747 remove_process (proc
);
6749 deactivate_process (proc
);
6752 /* The actions above may have further incremented p->tick.
6753 So set p->update_tick again
6754 so that an error in the sentinel will not cause
6755 this code to be run again. */
6756 p
->update_tick
= p
->tick
;
6757 /* Now output the message suitably. */
6758 if (!NILP (p
->sentinel
))
6759 exec_sentinel (proc
, msg
);
6760 /* Don't bother with a message in the buffer
6761 when a process becomes runnable. */
6762 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6764 Lisp_Object ro
, tem
;
6765 struct buffer
*old
= current_buffer
;
6766 int opoint
, opoint_byte
;
6767 int before
, before_byte
;
6769 ro
= XBUFFER (buffer
)->read_only
;
6771 /* Avoid error if buffer is deleted
6772 (probably that's why the process is dead, too) */
6773 if (NILP (XBUFFER (buffer
)->name
))
6775 Fset_buffer (buffer
);
6778 opoint_byte
= PT_BYTE
;
6779 /* Insert new output into buffer
6780 at the current end-of-output marker,
6781 thus preserving logical ordering of input and output. */
6782 if (XMARKER (p
->mark
)->buffer
)
6783 Fgoto_char (p
->mark
);
6785 SET_PT_BOTH (ZV
, ZV_BYTE
);
6788 before_byte
= PT_BYTE
;
6790 tem
= current_buffer
->read_only
;
6791 current_buffer
->read_only
= Qnil
;
6792 insert_string ("\nProcess ");
6793 Finsert (1, &p
->name
);
6794 insert_string (" ");
6796 current_buffer
->read_only
= tem
;
6797 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6799 if (opoint
>= before
)
6800 SET_PT_BOTH (opoint
+ (PT
- before
),
6801 opoint_byte
+ (PT_BYTE
- before_byte
));
6803 SET_PT_BOTH (opoint
, opoint_byte
);
6805 set_buffer_internal (old
);
6810 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6811 redisplay_preserve_echo_area (13);
6817 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6818 Sset_process_coding_system
, 1, 3, 0,
6819 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6820 DECODING will be used to decode subprocess output and ENCODING to
6821 encode subprocess input. */)
6822 (process
, decoding
, encoding
)
6823 register Lisp_Object process
, decoding
, encoding
;
6825 register struct Lisp_Process
*p
;
6827 CHECK_PROCESS (process
);
6828 p
= XPROCESS (process
);
6830 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6832 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6833 Fcheck_coding_system (decoding
);
6834 Fcheck_coding_system (encoding
);
6835 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6836 p
->decode_coding_system
= decoding
;
6837 p
->encode_coding_system
= encoding
;
6838 setup_process_coding_systems (process
);
6843 DEFUN ("process-coding-system",
6844 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6845 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6847 register Lisp_Object process
;
6849 CHECK_PROCESS (process
);
6850 return Fcons (XPROCESS (process
)->decode_coding_system
,
6851 XPROCESS (process
)->encode_coding_system
);
6854 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6855 Sset_process_filter_multibyte
, 2, 2, 0,
6856 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6857 If FLAG is non-nil, the filter is given multibyte strings.
6858 If FLAG is nil, the filter is given unibyte strings. In this case,
6859 all character code conversion except for end-of-line conversion is
6862 Lisp_Object process
, flag
;
6864 register struct Lisp_Process
*p
;
6866 CHECK_PROCESS (process
);
6867 p
= XPROCESS (process
);
6868 p
->filter_multibyte
= !NILP (flag
);
6869 setup_process_coding_systems (process
);
6874 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6875 Sprocess_filter_multibyte_p
, 1, 1, 0,
6876 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6878 Lisp_Object process
;
6880 register struct Lisp_Process
*p
;
6882 CHECK_PROCESS (process
);
6883 p
= XPROCESS (process
);
6885 return (p
->filter_multibyte
? Qt
: Qnil
);
6890 /* Add DESC to the set of keyboard input descriptors. */
6893 add_keyboard_wait_descriptor (desc
)
6896 FD_SET (desc
, &input_wait_mask
);
6897 FD_SET (desc
, &non_process_wait_mask
);
6898 if (desc
> max_keyboard_desc
)
6899 max_keyboard_desc
= desc
;
6902 static int add_gpm_wait_descriptor_called_flag
;
6905 add_gpm_wait_descriptor (desc
)
6908 if (! add_gpm_wait_descriptor_called_flag
)
6909 FD_CLR (0, &input_wait_mask
);
6910 add_gpm_wait_descriptor_called_flag
= 1;
6911 FD_SET (desc
, &input_wait_mask
);
6912 FD_SET (desc
, &gpm_wait_mask
);
6913 if (desc
> max_gpm_desc
)
6914 max_gpm_desc
= desc
;
6917 /* From now on, do not expect DESC to give keyboard input. */
6920 delete_keyboard_wait_descriptor (desc
)
6924 int lim
= max_keyboard_desc
;
6926 FD_CLR (desc
, &input_wait_mask
);
6927 FD_CLR (desc
, &non_process_wait_mask
);
6929 if (desc
== max_keyboard_desc
)
6930 for (fd
= 0; fd
< lim
; fd
++)
6931 if (FD_ISSET (fd
, &input_wait_mask
)
6932 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
6933 && !FD_ISSET (fd
, &gpm_wait_mask
))
6934 max_keyboard_desc
= fd
;
6938 delete_gpm_wait_descriptor (desc
)
6942 int lim
= max_gpm_desc
;
6944 FD_CLR (desc
, &input_wait_mask
);
6945 FD_CLR (desc
, &non_process_wait_mask
);
6947 if (desc
== max_gpm_desc
)
6948 for (fd
= 0; fd
< lim
; fd
++)
6949 if (FD_ISSET (fd
, &input_wait_mask
)
6950 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
6951 && !FD_ISSET (fd
, &non_process_wait_mask
))
6955 /* Return nonzero if *MASK has a bit set
6956 that corresponds to one of the keyboard input descriptors. */
6959 keyboard_bit_set (mask
)
6964 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6965 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6966 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6977 inhibit_sentinels
= 0;
6981 if (! noninteractive
|| initialized
)
6983 signal (SIGCHLD
, sigchld_handler
);
6986 FD_ZERO (&input_wait_mask
);
6987 FD_ZERO (&non_keyboard_wait_mask
);
6988 FD_ZERO (&non_process_wait_mask
);
6989 max_process_desc
= 0;
6991 #ifdef NON_BLOCKING_CONNECT
6992 FD_ZERO (&connect_wait_mask
);
6993 num_pending_connects
= 0;
6996 #ifdef ADAPTIVE_READ_BUFFERING
6997 process_output_delay_count
= 0;
6998 process_output_skip
= 0;
7001 /* Don't do this, it caused infinite select loops. The display
7002 method should call add_keyboard_wait_descriptor on stdin if it
7005 FD_SET (0, &input_wait_mask
);
7008 Vprocess_alist
= Qnil
;
7010 deleted_pid_list
= Qnil
;
7012 for (i
= 0; i
< MAXDESC
; i
++)
7014 chan_process
[i
] = Qnil
;
7015 proc_buffered_char
[i
] = -1;
7017 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7018 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7019 #ifdef DATAGRAM_SOCKETS
7020 bzero (datagram_address
, sizeof datagram_address
);
7025 Lisp_Object subfeatures
= Qnil
;
7026 struct socket_options
*sopt
;
7028 #define ADD_SUBFEATURE(key, val) \
7029 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
7031 #ifdef NON_BLOCKING_CONNECT
7032 ADD_SUBFEATURE (QCnowait
, Qt
);
7034 #ifdef DATAGRAM_SOCKETS
7035 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7037 #ifdef HAVE_LOCAL_SOCKETS
7038 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7040 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7042 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7044 #ifdef HAVE_GETSOCKNAME
7045 ADD_SUBFEATURE (QCservice
, Qt
);
7047 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
7048 ADD_SUBFEATURE (QCserver
, Qt
);
7051 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7052 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
7054 Fprovide (intern ("make-network-process"), subfeatures
);
7056 #endif /* HAVE_SOCKETS */
7058 #if defined (DARWIN) || defined (MAC_OSX)
7059 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7060 processes. As such, we only change the default value. */
7063 char *release
= get_operating_system_release();
7064 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7065 && release
[1] == '.')) {
7066 Vprocess_connection_type
= Qnil
;
7075 Qprocessp
= intern ("processp");
7076 staticpro (&Qprocessp
);
7077 Qrun
= intern ("run");
7079 Qstop
= intern ("stop");
7081 Qsignal
= intern ("signal");
7082 staticpro (&Qsignal
);
7084 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7087 Qexit = intern ("exit");
7088 staticpro (&Qexit); */
7090 Qopen
= intern ("open");
7092 Qclosed
= intern ("closed");
7093 staticpro (&Qclosed
);
7094 Qconnect
= intern ("connect");
7095 staticpro (&Qconnect
);
7096 Qfailed
= intern ("failed");
7097 staticpro (&Qfailed
);
7098 Qlisten
= intern ("listen");
7099 staticpro (&Qlisten
);
7100 Qlocal
= intern ("local");
7101 staticpro (&Qlocal
);
7102 Qipv4
= intern ("ipv4");
7105 Qipv6
= intern ("ipv6");
7108 Qdatagram
= intern ("datagram");
7109 staticpro (&Qdatagram
);
7111 QCname
= intern (":name");
7112 staticpro (&QCname
);
7113 QCbuffer
= intern (":buffer");
7114 staticpro (&QCbuffer
);
7115 QChost
= intern (":host");
7116 staticpro (&QChost
);
7117 QCservice
= intern (":service");
7118 staticpro (&QCservice
);
7119 QCtype
= intern (":type");
7120 staticpro (&QCtype
);
7121 QClocal
= intern (":local");
7122 staticpro (&QClocal
);
7123 QCremote
= intern (":remote");
7124 staticpro (&QCremote
);
7125 QCcoding
= intern (":coding");
7126 staticpro (&QCcoding
);
7127 QCserver
= intern (":server");
7128 staticpro (&QCserver
);
7129 QCnowait
= intern (":nowait");
7130 staticpro (&QCnowait
);
7131 QCsentinel
= intern (":sentinel");
7132 staticpro (&QCsentinel
);
7133 QClog
= intern (":log");
7135 QCnoquery
= intern (":noquery");
7136 staticpro (&QCnoquery
);
7137 QCstop
= intern (":stop");
7138 staticpro (&QCstop
);
7139 QCoptions
= intern (":options");
7140 staticpro (&QCoptions
);
7141 QCplist
= intern (":plist");
7142 staticpro (&QCplist
);
7143 QCfilter_multibyte
= intern (":filter-multibyte");
7144 staticpro (&QCfilter_multibyte
);
7146 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
7147 staticpro (&Qlast_nonmenu_event
);
7149 staticpro (&Vprocess_alist
);
7151 staticpro (&deleted_pid_list
);
7154 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7155 doc
: /* *Non-nil means delete processes immediately when they exit.
7156 A value of nil means don't delete them until `list-processes' is run. */);
7158 delete_exited_processes
= 1;
7160 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7161 doc
: /* Control type of device used to communicate with subprocesses.
7162 Values are nil to use a pipe, or t or `pty' to use a pty.
7163 The value has no effect if the system has no ptys or if all ptys are busy:
7164 then a pipe is used in any case.
7165 The value takes effect when `start-process' is called. */);
7166 Vprocess_connection_type
= Qt
;
7168 #ifdef ADAPTIVE_READ_BUFFERING
7169 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7170 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7171 On some systems, when Emacs reads the output from a subprocess, the output data
7172 is read in very small blocks, potentially resulting in very poor performance.
7173 This behavior can be remedied to some extent by setting this variable to a
7174 non-nil value, as it will automatically delay reading from such processes, to
7175 allow them to produce more output before Emacs tries to read it.
7176 If the value is t, the delay is reset after each write to the process; any other
7177 non-nil value means that the delay is not reset on write.
7178 The variable takes effect when `start-process' is called. */);
7179 Vprocess_adaptive_read_buffering
= Qt
;
7182 defsubr (&Sprocessp
);
7183 defsubr (&Sget_process
);
7184 defsubr (&Sget_buffer_process
);
7185 defsubr (&Sdelete_process
);
7186 defsubr (&Sprocess_status
);
7187 defsubr (&Sprocess_exit_status
);
7188 defsubr (&Sprocess_id
);
7189 defsubr (&Sprocess_name
);
7190 defsubr (&Sprocess_tty_name
);
7191 defsubr (&Sprocess_command
);
7192 defsubr (&Sset_process_buffer
);
7193 defsubr (&Sprocess_buffer
);
7194 defsubr (&Sprocess_mark
);
7195 defsubr (&Sset_process_filter
);
7196 defsubr (&Sprocess_filter
);
7197 defsubr (&Sset_process_sentinel
);
7198 defsubr (&Sprocess_sentinel
);
7199 defsubr (&Sset_process_window_size
);
7200 defsubr (&Sset_process_inherit_coding_system_flag
);
7201 defsubr (&Sprocess_inherit_coding_system_flag
);
7202 defsubr (&Sset_process_query_on_exit_flag
);
7203 defsubr (&Sprocess_query_on_exit_flag
);
7204 defsubr (&Sprocess_contact
);
7205 defsubr (&Sprocess_plist
);
7206 defsubr (&Sset_process_plist
);
7207 defsubr (&Slist_processes
);
7208 defsubr (&Sprocess_list
);
7209 defsubr (&Sstart_process
);
7211 defsubr (&Sset_network_process_option
);
7212 defsubr (&Smake_network_process
);
7213 defsubr (&Sformat_network_address
);
7214 #endif /* HAVE_SOCKETS */
7215 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7217 defsubr (&Snetwork_interface_list
);
7219 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7220 defsubr (&Snetwork_interface_info
);
7222 #endif /* HAVE_SOCKETS ... */
7223 #ifdef DATAGRAM_SOCKETS
7224 defsubr (&Sprocess_datagram_address
);
7225 defsubr (&Sset_process_datagram_address
);
7227 defsubr (&Saccept_process_output
);
7228 defsubr (&Sprocess_send_region
);
7229 defsubr (&Sprocess_send_string
);
7230 defsubr (&Sinterrupt_process
);
7231 defsubr (&Skill_process
);
7232 defsubr (&Squit_process
);
7233 defsubr (&Sstop_process
);
7234 defsubr (&Scontinue_process
);
7235 defsubr (&Sprocess_running_child_p
);
7236 defsubr (&Sprocess_send_eof
);
7237 defsubr (&Ssignal_process
);
7238 defsubr (&Swaiting_for_user_input_p
);
7239 /* defsubr (&Sprocess_connection); */
7240 defsubr (&Sset_process_coding_system
);
7241 defsubr (&Sprocess_coding_system
);
7242 defsubr (&Sset_process_filter_multibyte
);
7243 defsubr (&Sprocess_filter_multibyte_p
);
7247 #else /* not subprocesses */
7249 #include <sys/types.h>
7253 #include "systime.h"
7254 #include "character.h"
7256 #include "termopts.h"
7257 #include "sysselect.h"
7259 extern int frame_garbaged
;
7261 extern EMACS_TIME
timer_check ();
7262 extern int timers_run
;
7266 /* As described above, except assuming that there are no subprocesses:
7268 Wait for timeout to elapse and/or keyboard input to be available.
7271 timeout in seconds, or
7272 zero for no limit, or
7273 -1 means gobble data immediately available but don't wait for any.
7275 read_kbd is a Lisp_Object:
7276 0 to ignore keyboard input, or
7277 1 to return when input is available, or
7278 -1 means caller will actually read the input, so don't throw to
7281 see full version for other parameters. We know that wait_proc will
7282 always be NULL, since `subprocesses' isn't defined.
7284 do_display != 0 means redisplay should be done to show subprocess
7285 output that arrives.
7287 Return true if we received input from any process. */
7290 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7291 wait_for_cell
, wait_proc
, just_wait_proc
)
7292 int time_limit
, microsecs
, read_kbd
, do_display
;
7293 Lisp_Object wait_for_cell
;
7294 struct Lisp_Process
*wait_proc
;
7298 EMACS_TIME end_time
, timeout
;
7299 SELECT_TYPE waitchannels
;
7302 /* What does time_limit really mean? */
7303 if (time_limit
|| microsecs
)
7305 EMACS_GET_TIME (end_time
);
7306 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7307 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7310 /* Turn off periodic alarms (in case they are in use)
7311 and then turn off any other atimers,
7312 because the select emulator uses alarms. */
7314 turn_on_atimers (0);
7318 int timeout_reduced_for_timers
= 0;
7320 /* If calling from keyboard input, do not quit
7321 since we want to return C-g as an input character.
7322 Otherwise, do pending quit if requested. */
7326 /* Exit now if the cell we're waiting for became non-nil. */
7327 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7330 /* Compute time from now till when time limit is up */
7331 /* Exit if already run out */
7332 if (time_limit
== -1)
7334 /* -1 specified for timeout means
7335 gobble output available now
7336 but don't wait at all. */
7338 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7340 else if (time_limit
|| microsecs
)
7342 EMACS_GET_TIME (timeout
);
7343 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7344 if (EMACS_TIME_NEG_P (timeout
))
7349 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7352 /* If our caller will not immediately handle keyboard events,
7353 run timer events directly.
7354 (Callers that will immediately read keyboard events
7355 call timer_delay on their own.) */
7356 if (NILP (wait_for_cell
))
7358 EMACS_TIME timer_delay
;
7362 int old_timers_run
= timers_run
;
7363 timer_delay
= timer_check (1);
7364 if (timers_run
!= old_timers_run
&& do_display
)
7365 /* We must retry, since a timer may have requeued itself
7366 and that could alter the time delay. */
7367 redisplay_preserve_echo_area (14);
7371 while (!detect_input_pending ());
7373 /* If there is unread keyboard input, also return. */
7375 && requeued_events_pending_p ())
7378 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7380 EMACS_TIME difference
;
7381 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7382 if (EMACS_TIME_NEG_P (difference
))
7384 timeout
= timer_delay
;
7385 timeout_reduced_for_timers
= 1;
7390 /* Cause C-g and alarm signals to take immediate action,
7391 and cause input available signals to zero out timeout. */
7393 set_waiting_for_input (&timeout
);
7395 /* Wait till there is something to do. */
7397 if (! read_kbd
&& NILP (wait_for_cell
))
7398 FD_ZERO (&waitchannels
);
7400 FD_SET (0, &waitchannels
);
7402 /* If a frame has been newly mapped and needs updating,
7403 reprocess its display stuff. */
7404 if (frame_garbaged
&& do_display
)
7406 clear_waiting_for_input ();
7407 redisplay_preserve_echo_area (15);
7409 set_waiting_for_input (&timeout
);
7412 if (read_kbd
&& detect_input_pending ())
7415 FD_ZERO (&waitchannels
);
7418 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7423 /* Make C-g and alarm signals set flags again */
7424 clear_waiting_for_input ();
7426 /* If we woke up due to SIGWINCH, actually change size now. */
7427 do_pending_window_change (0);
7429 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7430 /* We waited the full specified time, so return now. */
7435 /* If the system call was interrupted, then go around the
7437 if (xerrno
== EINTR
)
7438 FD_ZERO (&waitchannels
);
7440 error ("select error: %s", emacs_strerror (xerrno
));
7443 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7444 /* System sometimes fails to deliver SIGIO. */
7445 kill (getpid (), SIGIO
);
7448 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7449 kill (getpid (), SIGIO
);
7452 /* Check for keyboard input */
7455 && detect_input_pending_run_timers (do_display
))
7457 swallow_events (do_display
);
7458 if (detect_input_pending_run_timers (do_display
))
7462 /* If there is unread keyboard input, also return. */
7464 && requeued_events_pending_p ())
7467 /* If wait_for_cell. check for keyboard input
7468 but don't run any timers.
7469 ??? (It seems wrong to me to check for keyboard
7470 input at all when wait_for_cell, but the code
7471 has been this way since July 1994.
7472 Try changing this after version 19.31.) */
7473 if (! NILP (wait_for_cell
)
7474 && detect_input_pending ())
7476 swallow_events (do_display
);
7477 if (detect_input_pending ())
7481 /* Exit now if the cell we're waiting for became non-nil. */
7482 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7492 /* Don't confuse make-docfile by having two doc strings for this function.
7493 make-docfile does not pay attention to #if, for good reason! */
7494 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7497 register Lisp_Object name
;
7502 /* Don't confuse make-docfile by having two doc strings for this function.
7503 make-docfile does not pay attention to #if, for good reason! */
7504 DEFUN ("process-inherit-coding-system-flag",
7505 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7509 register Lisp_Object process
;
7511 /* Ignore the argument and return the value of
7512 inherit-process-coding-system. */
7513 return inherit_process_coding_system
? Qt
: Qnil
;
7516 /* Kill all processes associated with `buffer'.
7517 If `buffer' is nil, kill all processes.
7518 Since we have no subprocesses, this does nothing. */
7521 kill_buffer_processes (buffer
)
7534 QCtype
= intern (":type");
7535 staticpro (&QCtype
);
7537 defsubr (&Sget_buffer_process
);
7538 defsubr (&Sprocess_inherit_coding_system_flag
);
7542 #endif /* not subprocesses */
7544 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7545 (do not change this comment) */