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>
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) (GC_CONSP (XPROCESS (p)->childp))
178 #define NETCONN1_P(p) (GC_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
;
683 if (inch
< 0 || outch
< 0)
686 if (!proc_decode_coding_system
[inch
])
687 proc_decode_coding_system
[inch
]
688 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
689 setup_coding_system (p
->decode_coding_system
,
690 proc_decode_coding_system
[inch
]);
691 if (! NILP (p
->filter
))
693 if (!p
->filter_multibyte
)
694 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
696 else if (BUFFERP (p
->buffer
))
698 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
699 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
702 if (!proc_encode_coding_system
[outch
])
703 proc_encode_coding_system
[outch
]
704 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
705 setup_coding_system (p
->encode_coding_system
,
706 proc_encode_coding_system
[outch
]);
707 if (proc_encode_coding_system
[outch
]->eol_type
== CODING_EOL_UNDECIDED
)
708 proc_encode_coding_system
[outch
]->eol_type
= system_eol_type
;
711 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
712 doc
: /* Return t if OBJECT is a process. */)
716 return PROCESSP (object
) ? Qt
: Qnil
;
719 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
720 doc
: /* Return the process named NAME, or nil if there is none. */)
722 register Lisp_Object name
;
727 return Fcdr (Fassoc (name
, Vprocess_alist
));
730 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
731 doc
: /* Return the (or a) process associated with BUFFER.
732 BUFFER may be a buffer or the name of one. */)
734 register Lisp_Object buffer
;
736 register Lisp_Object buf
, tail
, proc
;
738 if (NILP (buffer
)) return Qnil
;
739 buf
= Fget_buffer (buffer
);
740 if (NILP (buf
)) return Qnil
;
742 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
744 proc
= Fcdr (XCAR (tail
));
745 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
751 /* This is how commands for the user decode process arguments. It
752 accepts a process, a process name, a buffer, a buffer name, or nil.
753 Buffers denote the first process in the buffer, and nil denotes the
758 register Lisp_Object name
;
760 register Lisp_Object proc
, obj
;
763 obj
= Fget_process (name
);
765 obj
= Fget_buffer (name
);
767 error ("Process %s does not exist", SDATA (name
));
769 else if (NILP (name
))
770 obj
= Fcurrent_buffer ();
774 /* Now obj should be either a buffer object or a process object.
778 proc
= Fget_buffer_process (obj
);
780 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
792 /* Fdelete_process promises to immediately forget about the process, but in
793 reality, Emacs needs to remember those processes until they have been
794 treated by sigchld_handler; otherwise this handler would consider the
795 process as being synchronous and say that the synchronous process is
797 static Lisp_Object deleted_pid_list
;
800 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
801 doc
: /* Delete PROCESS: kill it and forget about it immediately.
802 PROCESS may be a process, a buffer, the name of a process or buffer, or
803 nil, indicating the current buffer's process. */)
805 register Lisp_Object process
;
807 register struct Lisp_Process
*p
;
809 process
= get_process (process
);
810 p
= XPROCESS (process
);
812 p
->raw_status_new
= 0;
815 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
816 p
->tick
= ++process_tick
;
819 else if (p
->infd
>= 0)
823 /* Assignment to EMACS_INT stops GCC whining about limited range
825 EMACS_INT pid
= p
->pid
;
827 /* No problem storing the pid here, as it is still in Vprocess_alist. */
828 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
829 /* GC treated elements set to nil. */
830 Fdelq (Qnil
, deleted_pid_list
));
831 /* If the process has already signaled, remove it from the list. */
832 if (p
->raw_status_new
)
835 if (CONSP (p
->status
))
836 symbol
= XCAR (p
->status
);
837 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
839 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
843 Fkill_process (process
, Qnil
);
844 /* Do this now, since remove_process will make sigchld_handler do nothing. */
846 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
847 p
->tick
= ++process_tick
;
851 remove_process (process
);
855 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
856 doc
: /* Return the status of PROCESS.
857 The returned value is one of the following symbols:
858 run -- for a process that is running.
859 stop -- for a process stopped but continuable.
860 exit -- for a process that has exited.
861 signal -- for a process that has got a fatal signal.
862 open -- for a network stream connection that is open.
863 listen -- for a network stream server that is listening.
864 closed -- for a network stream connection that is closed.
865 connect -- when waiting for a non-blocking connection to complete.
866 failed -- when a non-blocking connection has failed.
867 nil -- if arg is a process name and no such process exists.
868 PROCESS may be a process, a buffer, the name of a process, or
869 nil, indicating the current buffer's process. */)
871 register Lisp_Object process
;
873 register struct Lisp_Process
*p
;
874 register Lisp_Object status
;
876 if (STRINGP (process
))
877 process
= Fget_process (process
);
879 process
= get_process (process
);
884 p
= XPROCESS (process
);
885 if (p
->raw_status_new
)
889 status
= XCAR (status
);
892 if (EQ (status
, Qexit
))
894 else if (EQ (p
->command
, Qt
))
896 else if (EQ (status
, Qrun
))
902 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
904 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
905 If PROCESS has not yet exited or died, return 0. */)
907 register Lisp_Object process
;
909 CHECK_PROCESS (process
);
910 if (XPROCESS (process
)->raw_status_new
)
911 update_status (XPROCESS (process
));
912 if (CONSP (XPROCESS (process
)->status
))
913 return XCAR (XCDR (XPROCESS (process
)->status
));
914 return make_number (0);
917 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
918 doc
: /* Return the process id of PROCESS.
919 This is the pid of the external process which PROCESS uses or talks to.
920 For a network connection, this value is nil. */)
922 register Lisp_Object process
;
924 /* Assignment to EMACS_INT stops GCC whining about limited range of
928 CHECK_PROCESS (process
);
929 pid
= XPROCESS (process
)->pid
;
930 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
933 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
934 doc
: /* Return the name of PROCESS, as a string.
935 This is the name of the program invoked in PROCESS,
936 possibly modified to make it unique among process names. */)
938 register Lisp_Object process
;
940 CHECK_PROCESS (process
);
941 return XPROCESS (process
)->name
;
944 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
945 doc
: /* Return the command that was executed to start PROCESS.
946 This is a list of strings, the first string being the program executed
947 and the rest of the strings being the arguments given to it.
948 For a non-child channel, this is nil. */)
950 register Lisp_Object process
;
952 CHECK_PROCESS (process
);
953 return XPROCESS (process
)->command
;
956 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
957 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
958 This is the terminal that the process itself reads and writes on,
959 not the name of the pty that Emacs uses to talk with that terminal. */)
961 register Lisp_Object process
;
963 CHECK_PROCESS (process
);
964 return XPROCESS (process
)->tty_name
;
967 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
969 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
971 register Lisp_Object process
, buffer
;
973 struct Lisp_Process
*p
;
975 CHECK_PROCESS (process
);
977 CHECK_BUFFER (buffer
);
978 p
= XPROCESS (process
);
981 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
982 setup_process_coding_systems (process
);
986 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
988 doc
: /* Return the buffer PROCESS is associated with.
989 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
991 register Lisp_Object process
;
993 CHECK_PROCESS (process
);
994 return XPROCESS (process
)->buffer
;
997 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
999 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1001 register Lisp_Object process
;
1003 CHECK_PROCESS (process
);
1004 return XPROCESS (process
)->mark
;
1007 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1009 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
1010 A value of t means stop accepting output from the process.
1012 When a process has a filter, its buffer is not used for output.
1013 Instead, each time it does output, the entire string of output is
1014 passed to the filter.
1016 The filter gets two arguments: the process and the string of output.
1017 The string argument is normally a multibyte string, except:
1018 - if the process' input coding system is no-conversion or raw-text,
1019 it is a unibyte string (the non-converted input), or else
1020 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1021 string (the result of converting the decoded input multibyte
1022 string to unibyte with `string-make-unibyte'). */)
1024 register Lisp_Object process
, filter
;
1026 struct Lisp_Process
*p
;
1028 CHECK_PROCESS (process
);
1029 p
= XPROCESS (process
);
1031 /* Don't signal an error if the process' input file descriptor
1032 is closed. This could make debugging Lisp more difficult,
1033 for example when doing something like
1035 (setq process (start-process ...))
1037 (set-process-filter process ...) */
1041 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1043 FD_CLR (p
->infd
, &input_wait_mask
);
1044 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
1046 else if (EQ (p
->filter
, Qt
)
1047 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
1049 FD_SET (p
->infd
, &input_wait_mask
);
1050 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
1056 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1057 setup_process_coding_systems (process
);
1061 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1063 doc
: /* Returns the filter function of PROCESS; nil if none.
1064 See `set-process-filter' for more info on filter functions. */)
1066 register Lisp_Object process
;
1068 CHECK_PROCESS (process
);
1069 return XPROCESS (process
)->filter
;
1072 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1074 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1075 The sentinel is called as a function when the process changes state.
1076 It gets two arguments: the process, and a string describing the change. */)
1078 register Lisp_Object process
, sentinel
;
1080 struct Lisp_Process
*p
;
1082 CHECK_PROCESS (process
);
1083 p
= XPROCESS (process
);
1085 p
->sentinel
= sentinel
;
1087 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1091 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1093 doc
: /* Return the sentinel of PROCESS; nil if none.
1094 See `set-process-sentinel' for more info on sentinels. */)
1096 register Lisp_Object process
;
1098 CHECK_PROCESS (process
);
1099 return XPROCESS (process
)->sentinel
;
1102 DEFUN ("set-process-window-size", Fset_process_window_size
,
1103 Sset_process_window_size
, 3, 3, 0,
1104 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1105 (process
, height
, width
)
1106 register Lisp_Object process
, height
, width
;
1108 CHECK_PROCESS (process
);
1109 CHECK_NATNUM (height
);
1110 CHECK_NATNUM (width
);
1112 if (XPROCESS (process
)->infd
< 0
1113 || set_window_size (XPROCESS (process
)->infd
,
1114 XINT (height
), XINT (width
)) <= 0)
1120 DEFUN ("set-process-inherit-coding-system-flag",
1121 Fset_process_inherit_coding_system_flag
,
1122 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1123 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1124 If the second argument FLAG is non-nil, then the variable
1125 `buffer-file-coding-system' of the buffer associated with PROCESS
1126 will be bound to the value of the coding system used to decode
1129 This is useful when the coding system specified for the process buffer
1130 leaves either the character code conversion or the end-of-line conversion
1131 unspecified, or if the coding system used to decode the process output
1132 is more appropriate for saving the process buffer.
1134 Binding the variable `inherit-process-coding-system' to non-nil before
1135 starting the process is an alternative way of setting the inherit flag
1136 for the process which will run. */)
1138 register Lisp_Object process
, flag
;
1140 CHECK_PROCESS (process
);
1141 XPROCESS (process
)->inherit_coding_system_flag
= !NILP (flag
);
1145 DEFUN ("process-inherit-coding-system-flag",
1146 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1148 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1149 If this flag is t, `buffer-file-coding-system' of the buffer
1150 associated with PROCESS will inherit the coding system used to decode
1151 the process output. */)
1153 register Lisp_Object process
;
1155 CHECK_PROCESS (process
);
1156 return XPROCESS (process
)->inherit_coding_system_flag
? Qt
: Qnil
;
1159 DEFUN ("set-process-query-on-exit-flag",
1160 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1162 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1163 If the second argument FLAG is non-nil, Emacs will query the user before
1164 exiting if PROCESS is running. */)
1166 register Lisp_Object process
, flag
;
1168 CHECK_PROCESS (process
);
1169 XPROCESS (process
)->kill_without_query
= NILP (flag
);
1173 DEFUN ("process-query-on-exit-flag",
1174 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1176 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1178 register Lisp_Object process
;
1180 CHECK_PROCESS (process
);
1181 return (XPROCESS (process
)->kill_without_query
? Qnil
: Qt
);
1184 #ifdef DATAGRAM_SOCKETS
1185 Lisp_Object
Fprocess_datagram_address ();
1188 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1190 doc
: /* Return the contact info of PROCESS; t for a real child.
1191 For a net connection, the value depends on the optional KEY arg.
1192 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1193 if KEY is t, the complete contact information for the connection is
1194 returned, else the specific value for the keyword KEY is returned.
1195 See `make-network-process' for a list of keywords. */)
1197 register Lisp_Object process
, key
;
1199 Lisp_Object contact
;
1201 CHECK_PROCESS (process
);
1202 contact
= XPROCESS (process
)->childp
;
1204 #ifdef DATAGRAM_SOCKETS
1205 if (DATAGRAM_CONN_P (process
)
1206 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1207 contact
= Fplist_put (contact
, QCremote
,
1208 Fprocess_datagram_address (process
));
1211 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1214 return Fcons (Fplist_get (contact
, QChost
),
1215 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1216 return Fplist_get (contact
, key
);
1219 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1221 doc
: /* Return the plist of PROCESS. */)
1223 register Lisp_Object process
;
1225 CHECK_PROCESS (process
);
1226 return XPROCESS (process
)->plist
;
1229 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1231 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1233 register Lisp_Object process
, plist
;
1235 CHECK_PROCESS (process
);
1238 XPROCESS (process
)->plist
= plist
;
1242 #if 0 /* Turned off because we don't currently record this info
1243 in the process. Perhaps add it. */
1244 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1245 doc
: /* Return the connection type of PROCESS.
1246 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1247 a socket connection. */)
1249 Lisp_Object process
;
1251 return XPROCESS (process
)->type
;
1256 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1258 doc
: /* Convert network ADDRESS from internal format to a string.
1259 A 4 or 5 element vector represents an IPv4 address (with port number).
1260 An 8 or 9 element vector represents an IPv6 address (with port number).
1261 If optional second argument OMIT-PORT is non-nil, don't include a port
1262 number in the string, even when present in ADDRESS.
1263 Returns nil if format of ADDRESS is invalid. */)
1264 (address
, omit_port
)
1265 Lisp_Object address
, omit_port
;
1270 if (STRINGP (address
)) /* AF_LOCAL */
1273 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1275 register struct Lisp_Vector
*p
= XVECTOR (address
);
1276 Lisp_Object args
[10];
1279 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1281 args
[0] = build_string ("%d.%d.%d.%d");
1284 else if (p
->size
== 5)
1286 args
[0] = build_string ("%d.%d.%d.%d:%d");
1289 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1291 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1294 else if (p
->size
== 9)
1296 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1302 for (i
= 0; i
< nargs
; i
++)
1304 EMACS_INT element
= XINT (p
->contents
[i
]);
1306 if (element
< 0 || element
> 65535)
1309 if (nargs
<= 5 /* IPv4 */
1310 && i
< 4 /* host, not port */
1314 args
[i
+1] = p
->contents
[i
];
1317 return Fformat (nargs
+1, args
);
1320 if (CONSP (address
))
1322 Lisp_Object args
[2];
1323 args
[0] = build_string ("<Family %d>");
1324 args
[1] = Fcar (address
);
1325 return Fformat (2, args
);
1333 list_processes_1 (query_only
)
1334 Lisp_Object query_only
;
1336 register Lisp_Object tail
, tem
;
1337 Lisp_Object proc
, minspace
, tem1
;
1338 register struct Lisp_Process
*p
;
1340 int w_proc
, w_buffer
, w_tty
;
1342 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1344 w_proc
= 4; /* Proc */
1345 w_buffer
= 6; /* Buffer */
1346 w_tty
= 0; /* Omit if no ttys */
1348 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1352 proc
= Fcdr (XCAR (tail
));
1353 p
= XPROCESS (proc
);
1354 if (NILP (p
->childp
))
1356 if (!NILP (query_only
) && p
->kill_without_query
)
1358 if (STRINGP (p
->name
)
1359 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1361 if (!NILP (p
->buffer
))
1363 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1364 w_buffer
= 8; /* (Killed) */
1365 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1368 if (STRINGP (p
->tty_name
)
1369 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1373 XSETFASTINT (i_status
, w_proc
+ 1);
1374 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1377 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1378 XSETFASTINT (i_command
, XFASTINT (i_tty
) + w_tty
+ 1);
1383 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1386 XSETFASTINT (minspace
, 1);
1388 set_buffer_internal (XBUFFER (Vstandard_output
));
1389 current_buffer
->undo_list
= Qt
;
1391 current_buffer
->truncate_lines
= Qt
;
1393 write_string ("Proc", -1);
1394 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1395 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1398 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1400 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1401 write_string ("\n", -1);
1403 write_string ("----", -1);
1404 Findent_to (i_status
, minspace
); write_string ("------", -1);
1405 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1408 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1410 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1411 write_string ("\n", -1);
1413 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
1417 proc
= Fcdr (XCAR (tail
));
1418 p
= XPROCESS (proc
);
1419 if (NILP (p
->childp
))
1421 if (!NILP (query_only
) && p
->kill_without_query
)
1424 Finsert (1, &p
->name
);
1425 Findent_to (i_status
, minspace
);
1427 if (p
->raw_status_new
)
1430 if (CONSP (p
->status
))
1431 symbol
= XCAR (p
->status
);
1433 if (EQ (symbol
, Qsignal
))
1436 tem
= Fcar (Fcdr (p
->status
));
1438 if (XINT (tem
) < NSIG
)
1439 write_string (sys_errlist
[XINT (tem
)], -1);
1442 Fprinc (symbol
, Qnil
);
1444 else if (NETCONN1_P (p
))
1446 if (EQ (symbol
, Qexit
))
1447 write_string ("closed", -1);
1448 else if (EQ (p
->command
, Qt
))
1449 write_string ("stopped", -1);
1450 else if (EQ (symbol
, Qrun
))
1451 write_string ("open", -1);
1453 Fprinc (symbol
, Qnil
);
1456 Fprinc (symbol
, Qnil
);
1458 if (EQ (symbol
, Qexit
))
1461 tem
= Fcar (Fcdr (p
->status
));
1464 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1465 write_string (tembuf
, -1);
1469 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1472 Findent_to (i_buffer
, minspace
);
1473 if (NILP (p
->buffer
))
1474 insert_string ("(none)");
1475 else if (NILP (XBUFFER (p
->buffer
)->name
))
1476 insert_string ("(Killed)");
1478 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1482 Findent_to (i_tty
, minspace
);
1483 if (STRINGP (p
->tty_name
))
1484 Finsert (1, &p
->tty_name
);
1487 Findent_to (i_command
, minspace
);
1489 if (EQ (p
->status
, Qlisten
))
1491 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1492 if (INTEGERP (port
))
1493 port
= Fnumber_to_string (port
);
1495 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1496 sprintf (tembuf
, "(network %s server on %s)\n",
1497 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1498 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1499 insert_string (tembuf
);
1501 else if (NETCONN1_P (p
))
1503 /* For a local socket, there is no host name,
1504 so display service instead. */
1505 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1506 if (!STRINGP (host
))
1508 host
= Fplist_get (p
->childp
, QCservice
);
1509 if (INTEGERP (host
))
1510 host
= Fnumber_to_string (host
);
1513 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1514 sprintf (tembuf
, "(network %s connection to %s)\n",
1515 (DATAGRAM_CHAN_P (p
->infd
) ? "datagram" : "stream"),
1516 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1517 insert_string (tembuf
);
1529 insert_string (" ");
1531 insert_string ("\n");
1535 status_notify (NULL
);
1539 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1540 doc
: /* Display a list of all processes.
1541 If optional argument QUERY-ONLY is non-nil, only processes with
1542 the query-on-exit flag set will be listed.
1543 Any process listed as exited or signaled is actually eliminated
1544 after the listing is made. */)
1546 Lisp_Object query_only
;
1548 internal_with_output_to_temp_buffer ("*Process List*",
1549 list_processes_1
, query_only
);
1553 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1554 doc
: /* Return a list of all processes. */)
1557 return Fmapcar (Qcdr
, Vprocess_alist
);
1560 /* Starting asynchronous inferior processes. */
1562 static Lisp_Object
start_process_unwind ();
1564 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1565 doc
: /* Start a program in a subprocess. Return the process object for it.
1566 NAME is name for process. It is modified if necessary to make it unique.
1567 BUFFER is the buffer (or buffer name) to associate with the process.
1569 Process output (both standard output and standard error streams) goes
1570 at end of BUFFER, unless you specify an output stream or filter
1571 function to handle the output. BUFFER may also be nil, meaning that
1572 this process is not associated with any buffer.
1574 PROGRAM is the program file name. It is searched for in PATH.
1575 Remaining arguments are strings to give program as arguments.
1577 If you want to separate standard output from standard error, invoke
1578 the command through a shell and redirect one of them using the shell
1581 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1584 register Lisp_Object
*args
;
1586 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1588 register unsigned char *new_argv
;
1591 register unsigned char **new_argv
;
1594 int count
= SPECPDL_INDEX ();
1598 buffer
= Fget_buffer_create (buffer
);
1600 /* Make sure that the child will be able to chdir to the current
1601 buffer's current directory, or its unhandled equivalent. We
1602 can't just have the child check for an error when it does the
1603 chdir, since it's in a vfork.
1605 We have to GCPRO around this because Fexpand_file_name and
1606 Funhandled_file_name_directory might call a file name handling
1607 function. The argument list is protected by the caller, so all
1608 we really have to worry about is buffer. */
1610 struct gcpro gcpro1
, gcpro2
;
1612 current_dir
= current_buffer
->directory
;
1614 GCPRO2 (buffer
, current_dir
);
1617 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1619 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1620 report_file_error ("Setting current directory",
1621 Fcons (current_buffer
->directory
, Qnil
));
1627 CHECK_STRING (name
);
1631 CHECK_STRING (program
);
1633 proc
= make_process (name
);
1634 /* If an error occurs and we can't start the process, we want to
1635 remove it from the process list. This means that each error
1636 check in create_process doesn't need to call remove_process
1637 itself; it's all taken care of here. */
1638 record_unwind_protect (start_process_unwind
, proc
);
1640 XPROCESS (proc
)->childp
= Qt
;
1641 XPROCESS (proc
)->plist
= Qnil
;
1642 XPROCESS (proc
)->buffer
= buffer
;
1643 XPROCESS (proc
)->sentinel
= Qnil
;
1644 XPROCESS (proc
)->filter
= Qnil
;
1645 XPROCESS (proc
)->filter_multibyte
1646 = !NILP (buffer_defaults
.enable_multibyte_characters
);
1647 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1649 #ifdef ADAPTIVE_READ_BUFFERING
1650 XPROCESS (proc
)->adaptive_read_buffering
1651 = (NILP (Vprocess_adaptive_read_buffering
) ? 0
1652 : EQ (Vprocess_adaptive_read_buffering
, Qt
) ? 1 : 2);
1655 /* Make the process marker point into the process buffer (if any). */
1656 if (BUFFERP (buffer
))
1657 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1658 BUF_ZV (XBUFFER (buffer
)),
1659 BUF_ZV_BYTE (XBUFFER (buffer
)));
1662 /* Decide coding systems for communicating with the process. Here
1663 we don't setup the structure coding_system nor pay attention to
1664 unibyte mode. They are done in create_process. */
1666 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1667 Lisp_Object coding_systems
= Qt
;
1668 Lisp_Object val
, *args2
;
1669 struct gcpro gcpro1
, gcpro2
;
1671 val
= Vcoding_system_for_read
;
1674 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1675 args2
[0] = Qstart_process
;
1676 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1677 GCPRO2 (proc
, current_dir
);
1678 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1680 if (CONSP (coding_systems
))
1681 val
= XCAR (coding_systems
);
1682 else if (CONSP (Vdefault_process_coding_system
))
1683 val
= XCAR (Vdefault_process_coding_system
);
1685 XPROCESS (proc
)->decode_coding_system
= val
;
1687 val
= Vcoding_system_for_write
;
1690 if (EQ (coding_systems
, Qt
))
1692 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1693 args2
[0] = Qstart_process
;
1694 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1695 GCPRO2 (proc
, current_dir
);
1696 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1699 if (CONSP (coding_systems
))
1700 val
= XCDR (coding_systems
);
1701 else if (CONSP (Vdefault_process_coding_system
))
1702 val
= XCDR (Vdefault_process_coding_system
);
1704 XPROCESS (proc
)->encode_coding_system
= val
;
1708 /* Make a one member argv with all args concatenated
1709 together separated by a blank. */
1710 len
= SBYTES (program
) + 2;
1711 for (i
= 3; i
< nargs
; i
++)
1715 len
+= SBYTES (tem
) + 1; /* count the blank */
1717 new_argv
= (unsigned char *) alloca (len
);
1718 strcpy (new_argv
, SDATA (program
));
1719 for (i
= 3; i
< nargs
; i
++)
1723 strcat (new_argv
, " ");
1724 strcat (new_argv
, SDATA (tem
));
1726 /* Need to add code here to check for program existence on VMS */
1729 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1731 /* If program file name is not absolute, search our path for it.
1732 Put the name we will really use in TEM. */
1733 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1734 && !(SCHARS (program
) > 1
1735 && IS_DEVICE_SEP (SREF (program
, 1))))
1737 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1740 GCPRO4 (name
, program
, buffer
, current_dir
);
1741 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1744 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1745 tem
= Fexpand_file_name (tem
, Qnil
);
1749 if (!NILP (Ffile_directory_p (program
)))
1750 error ("Specified program for new process is a directory");
1754 /* If program file name starts with /: for quoting a magic name,
1756 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1757 && SREF (tem
, 1) == ':')
1758 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1760 /* Encode the file name and put it in NEW_ARGV.
1761 That's where the child will use it to execute the program. */
1762 tem
= ENCODE_FILE (tem
);
1763 new_argv
[0] = SDATA (tem
);
1765 /* Here we encode arguments by the coding system used for sending
1766 data to the process. We don't support using different coding
1767 systems for encoding arguments and for encoding data sent to the
1770 for (i
= 3; i
< nargs
; i
++)
1774 if (STRING_MULTIBYTE (tem
))
1775 tem
= (code_convert_string_norecord
1776 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1777 new_argv
[i
- 2] = SDATA (tem
);
1779 new_argv
[i
- 2] = 0;
1780 #endif /* not VMS */
1782 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1783 XPROCESS (proc
)->decoding_carryover
= 0;
1784 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1786 XPROCESS (proc
)->inherit_coding_system_flag
1787 = !(NILP (buffer
) || !inherit_process_coding_system
);
1789 create_process (proc
, (char **) new_argv
, current_dir
);
1791 return unbind_to (count
, proc
);
1794 /* This function is the unwind_protect form for Fstart_process. If
1795 PROC doesn't have its pid set, then we know someone has signaled
1796 an error and the process wasn't started successfully, so we should
1797 remove it from the process list. */
1799 start_process_unwind (proc
)
1802 if (!PROCESSP (proc
))
1805 /* Was PROC started successfully? */
1806 if (XPROCESS (proc
)->pid
<= 0)
1807 remove_process (proc
);
1813 create_process_1 (timer
)
1814 struct atimer
*timer
;
1816 /* Nothing to do. */
1820 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1823 /* Mimic blocking of signals on system V, which doesn't really have it. */
1825 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1826 int sigchld_deferred
;
1829 create_process_sigchld ()
1831 signal (SIGCHLD
, create_process_sigchld
);
1833 sigchld_deferred
= 1;
1839 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1841 create_process (process
, new_argv
, current_dir
)
1842 Lisp_Object process
;
1844 Lisp_Object current_dir
;
1846 int inchannel
, outchannel
;
1849 #ifdef POSIX_SIGNALS
1852 struct sigaction sigint_action
;
1853 struct sigaction sigquit_action
;
1855 struct sigaction sighup_action
;
1857 #else /* !POSIX_SIGNALS */
1860 SIGTYPE (*sigchld
)();
1863 #endif /* !POSIX_SIGNALS */
1864 /* Use volatile to protect variables from being clobbered by longjmp. */
1865 volatile int forkin
, forkout
;
1866 volatile int pty_flag
= 0;
1868 extern char **environ
;
1871 inchannel
= outchannel
= -1;
1874 if (!NILP (Vprocess_connection_type
))
1875 outchannel
= inchannel
= allocate_pty ();
1879 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1880 /* On most USG systems it does not work to open the pty's tty here,
1881 then close it and reopen it in the child. */
1883 /* Don't let this terminal become our controlling terminal
1884 (in case we don't have one). */
1885 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1887 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1890 report_file_error ("Opening pty", Qnil
);
1891 #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY)
1892 /* In the case that vfork is defined as fork, the parent process
1893 (Emacs) may send some data before the child process completes
1894 tty options setup. So we setup tty before forking. */
1895 child_setup_tty (forkout
);
1896 #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */
1898 forkin
= forkout
= -1;
1899 #endif /* not USG, or USG_SUBTTY_WORKS */
1903 #endif /* HAVE_PTYS */
1906 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1907 report_file_error ("Opening socketpair", Qnil
);
1908 outchannel
= inchannel
= sv
[0];
1909 forkout
= forkin
= sv
[1];
1911 #else /* not SKTPAIR */
1916 report_file_error ("Creating pipe", Qnil
);
1922 emacs_close (inchannel
);
1923 emacs_close (forkout
);
1924 report_file_error ("Creating pipe", Qnil
);
1929 #endif /* not SKTPAIR */
1932 /* Replaced by close_process_descs */
1933 set_exclusive_use (inchannel
);
1934 set_exclusive_use (outchannel
);
1937 /* Stride people say it's a mystery why this is needed
1938 as well as the O_NDELAY, but that it fails without this. */
1939 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1942 ioctl (inchannel
, FIONBIO
, &one
);
1947 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1948 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1951 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1952 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1956 /* Record this as an active process, with its channels.
1957 As a result, child_setup will close Emacs's side of the pipes. */
1958 chan_process
[inchannel
] = process
;
1959 XPROCESS (process
)->infd
= inchannel
;
1960 XPROCESS (process
)->outfd
= outchannel
;
1962 /* Previously we recorded the tty descriptor used in the subprocess.
1963 It was only used for getting the foreground tty process, so now
1964 we just reopen the device (see emacs_get_tty_pgrp) as this is
1965 more portable (see USG_SUBTTY_WORKS above). */
1967 XPROCESS (process
)->pty_flag
= pty_flag
;
1968 XPROCESS (process
)->status
= Qrun
;
1969 setup_process_coding_systems (process
);
1971 /* Delay interrupts until we have a chance to store
1972 the new fork's pid in its process structure */
1973 #ifdef POSIX_SIGNALS
1974 sigemptyset (&blocked
);
1976 sigaddset (&blocked
, SIGCHLD
);
1978 #ifdef HAVE_WORKING_VFORK
1979 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1980 this sets the parent's signal handlers as well as the child's.
1981 So delay all interrupts whose handlers the child might munge,
1982 and record the current handlers so they can be restored later. */
1983 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1984 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1986 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1988 #endif /* HAVE_WORKING_VFORK */
1989 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1990 #else /* !POSIX_SIGNALS */
1994 #else /* not BSD4_1 */
1995 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1996 sigsetmask (sigmask (SIGCHLD
));
1997 #else /* ordinary USG */
1999 sigchld_deferred
= 0;
2000 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
2002 #endif /* ordinary USG */
2003 #endif /* not BSD4_1 */
2004 #endif /* SIGCHLD */
2005 #endif /* !POSIX_SIGNALS */
2007 FD_SET (inchannel
, &input_wait_mask
);
2008 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2009 if (inchannel
> max_process_desc
)
2010 max_process_desc
= inchannel
;
2012 /* Until we store the proper pid, enable sigchld_handler
2013 to recognize an unknown pid as standing for this process.
2014 It is very important not to let this `marker' value stay
2015 in the table after this function has returned; if it does
2016 it might cause call-process to hang and subsequent asynchronous
2017 processes to get their return values scrambled. */
2018 XPROCESS (process
)->pid
= -1;
2023 /* child_setup must clobber environ on systems with true vfork.
2024 Protect it from permanent change. */
2025 char **save_environ
= environ
;
2027 current_dir
= ENCODE_FILE (current_dir
);
2032 #endif /* not WINDOWSNT */
2034 int xforkin
= forkin
;
2035 int xforkout
= forkout
;
2037 #if 0 /* This was probably a mistake--it duplicates code later on,
2038 but fails to handle all the cases. */
2039 /* Make sure SIGCHLD is not blocked in the child. */
2040 sigsetmask (SIGEMPTYMASK
);
2043 /* Make the pty be the controlling terminal of the process. */
2045 /* First, disconnect its current controlling terminal. */
2047 /* We tried doing setsid only if pty_flag, but it caused
2048 process_set_signal to fail on SGI when using a pipe. */
2050 /* Make the pty's terminal the controlling terminal. */
2054 /* We ignore the return value
2055 because faith@cs.unc.edu says that is necessary on Linux. */
2056 ioctl (xforkin
, TIOCSCTTY
, 0);
2059 #else /* not HAVE_SETSID */
2061 /* It's very important to call setpgrp here and no time
2062 afterwards. Otherwise, we lose our controlling tty which
2063 is set when we open the pty. */
2066 #endif /* not HAVE_SETSID */
2067 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2068 if (pty_flag
&& xforkin
>= 0)
2071 tcgetattr (xforkin
, &t
);
2073 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2074 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2077 #if defined (NTTYDISC) && defined (TIOCSETD)
2078 if (pty_flag
&& xforkin
>= 0)
2080 /* Use new line discipline. */
2081 int ldisc
= NTTYDISC
;
2082 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2087 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2088 can do TIOCSPGRP only to the process's controlling tty. */
2091 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2092 I can't test it since I don't have 4.3. */
2093 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2094 ioctl (j
, TIOCNOTTY
, 0);
2097 /* In order to get a controlling terminal on some versions
2098 of BSD, it is necessary to put the process in pgrp 0
2099 before it opens the terminal. */
2107 #endif /* TIOCNOTTY */
2109 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2110 /*** There is a suggestion that this ought to be a
2111 conditional on TIOCSPGRP,
2112 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2113 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2114 that system does seem to need this code, even though
2115 both HAVE_SETSID and TIOCSCTTY are defined. */
2116 /* Now close the pty (if we had it open) and reopen it.
2117 This makes the pty the controlling terminal of the subprocess. */
2120 #ifdef SET_CHILD_PTY_PGRP
2121 int pgrp
= getpid ();
2124 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2127 emacs_close (xforkin
);
2128 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2132 emacs_write (1, "Couldn't open the pty terminal ", 31);
2133 emacs_write (1, pty_name
, strlen (pty_name
));
2134 emacs_write (1, "\n", 1);
2138 #ifdef SET_CHILD_PTY_PGRP
2139 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2140 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2143 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2145 #ifdef SETUP_SLAVE_PTY
2150 #endif /* SETUP_SLAVE_PTY */
2152 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2153 Now reenable it in the child, so it will die when we want it to. */
2155 signal (SIGHUP
, SIG_DFL
);
2157 #endif /* HAVE_PTYS */
2159 signal (SIGINT
, SIG_DFL
);
2160 signal (SIGQUIT
, SIG_DFL
);
2162 /* Stop blocking signals in the child. */
2163 #ifdef POSIX_SIGNALS
2164 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2165 #else /* !POSIX_SIGNALS */
2169 #else /* not BSD4_1 */
2170 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2171 sigsetmask (SIGEMPTYMASK
);
2172 #else /* ordinary USG */
2174 signal (SIGCHLD
, sigchld
);
2176 #endif /* ordinary USG */
2177 #endif /* not BSD4_1 */
2178 #endif /* SIGCHLD */
2179 #endif /* !POSIX_SIGNALS */
2181 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2183 child_setup_tty (xforkout
);
2184 #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */
2186 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2187 new_argv
, 1, current_dir
);
2188 #else /* not WINDOWSNT */
2189 child_setup (xforkin
, xforkout
, xforkout
,
2190 new_argv
, 1, current_dir
);
2191 #endif /* not WINDOWSNT */
2193 environ
= save_environ
;
2198 /* This runs in the Emacs process. */
2202 emacs_close (forkin
);
2203 if (forkin
!= forkout
&& forkout
>= 0)
2204 emacs_close (forkout
);
2208 /* vfork succeeded. */
2209 XPROCESS (process
)->pid
= pid
;
2212 register_child (pid
, inchannel
);
2213 #endif /* WINDOWSNT */
2215 /* If the subfork execv fails, and it exits,
2216 this close hangs. I don't know why.
2217 So have an interrupt jar it loose. */
2219 struct atimer
*timer
;
2223 EMACS_SET_SECS_USECS (offset
, 1, 0);
2224 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2227 emacs_close (forkin
);
2229 cancel_atimer (timer
);
2233 if (forkin
!= forkout
&& forkout
>= 0)
2234 emacs_close (forkout
);
2238 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2241 XPROCESS (process
)->tty_name
= Qnil
;
2244 /* Restore the signal state whether vfork succeeded or not.
2245 (We will signal an error, below, if it failed.) */
2246 #ifdef POSIX_SIGNALS
2247 #ifdef HAVE_WORKING_VFORK
2248 /* Restore the parent's signal handlers. */
2249 sigaction (SIGINT
, &sigint_action
, 0);
2250 sigaction (SIGQUIT
, &sigquit_action
, 0);
2252 sigaction (SIGHUP
, &sighup_action
, 0);
2254 #endif /* HAVE_WORKING_VFORK */
2255 /* Stop blocking signals in the parent. */
2256 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2257 #else /* !POSIX_SIGNALS */
2261 #else /* not BSD4_1 */
2262 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2263 sigsetmask (SIGEMPTYMASK
);
2264 #else /* ordinary USG */
2266 signal (SIGCHLD
, sigchld
);
2267 /* Now really handle any of these signals
2268 that came in during this function. */
2269 if (sigchld_deferred
)
2270 kill (getpid (), SIGCHLD
);
2272 #endif /* ordinary USG */
2273 #endif /* not BSD4_1 */
2274 #endif /* SIGCHLD */
2275 #endif /* !POSIX_SIGNALS */
2277 /* Now generate the error if vfork failed. */
2279 report_file_error ("Doing vfork", Qnil
);
2281 #endif /* not VMS */
2286 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2287 The address family of sa is not included in the result. */
2290 conv_sockaddr_to_lisp (sa
, len
)
2291 struct sockaddr
*sa
;
2294 Lisp_Object address
;
2297 register struct Lisp_Vector
*p
;
2299 switch (sa
->sa_family
)
2303 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2304 len
= sizeof (sin
->sin_addr
) + 1;
2305 address
= Fmake_vector (make_number (len
), Qnil
);
2306 p
= XVECTOR (address
);
2307 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2308 cp
= (unsigned char *)&sin
->sin_addr
;
2314 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2315 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2316 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2317 address
= Fmake_vector (make_number (len
), Qnil
);
2318 p
= XVECTOR (address
);
2319 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2320 for (i
= 0; i
< len
; i
++)
2321 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2325 #ifdef HAVE_LOCAL_SOCKETS
2328 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2329 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2330 if (sockun
->sun_path
[i
] == 0)
2332 return make_unibyte_string (sockun
->sun_path
, i
);
2336 len
-= sizeof (sa
->sa_family
);
2337 address
= Fcons (make_number (sa
->sa_family
),
2338 Fmake_vector (make_number (len
), Qnil
));
2339 p
= XVECTOR (XCDR (address
));
2340 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2346 p
->contents
[i
++] = make_number (*cp
++);
2352 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2355 get_lisp_to_sockaddr_size (address
, familyp
)
2356 Lisp_Object address
;
2359 register struct Lisp_Vector
*p
;
2361 if (VECTORP (address
))
2363 p
= XVECTOR (address
);
2367 return sizeof (struct sockaddr_in
);
2370 else if (p
->size
== 9)
2372 *familyp
= AF_INET6
;
2373 return sizeof (struct sockaddr_in6
);
2377 #ifdef HAVE_LOCAL_SOCKETS
2378 else if (STRINGP (address
))
2380 *familyp
= AF_LOCAL
;
2381 return sizeof (struct sockaddr_un
);
2384 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2386 struct sockaddr
*sa
;
2387 *familyp
= XINT (XCAR (address
));
2388 p
= XVECTOR (XCDR (address
));
2389 return p
->size
+ sizeof (sa
->sa_family
);
2394 /* Convert an address object (vector or string) to an internal sockaddr.
2396 The address format has been basically validated by
2397 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2398 it could have come from user data. So if FAMILY is not valid,
2399 we return after zeroing *SA. */
2402 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2404 Lisp_Object address
;
2405 struct sockaddr
*sa
;
2408 register struct Lisp_Vector
*p
;
2409 register unsigned char *cp
= NULL
;
2414 if (VECTORP (address
))
2416 p
= XVECTOR (address
);
2417 if (family
== AF_INET
)
2419 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2420 len
= sizeof (sin
->sin_addr
) + 1;
2421 i
= XINT (p
->contents
[--len
]);
2422 sin
->sin_port
= htons (i
);
2423 cp
= (unsigned char *)&sin
->sin_addr
;
2424 sa
->sa_family
= family
;
2427 else if (family
== AF_INET6
)
2429 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2430 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2431 len
= sizeof (sin6
->sin6_addr
) + 1;
2432 i
= XINT (p
->contents
[--len
]);
2433 sin6
->sin6_port
= htons (i
);
2434 for (i
= 0; i
< len
; i
++)
2435 if (INTEGERP (p
->contents
[i
]))
2437 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2440 sa
->sa_family
= family
;
2445 else if (STRINGP (address
))
2447 #ifdef HAVE_LOCAL_SOCKETS
2448 if (family
== AF_LOCAL
)
2450 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2451 cp
= SDATA (address
);
2452 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2453 sockun
->sun_path
[i
] = *cp
++;
2454 sa
->sa_family
= family
;
2461 p
= XVECTOR (XCDR (address
));
2462 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2465 for (i
= 0; i
< len
; i
++)
2466 if (INTEGERP (p
->contents
[i
]))
2467 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2470 #ifdef DATAGRAM_SOCKETS
2471 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2473 doc
: /* Get the current datagram address associated with PROCESS. */)
2475 Lisp_Object process
;
2479 CHECK_PROCESS (process
);
2481 if (!DATAGRAM_CONN_P (process
))
2484 channel
= XPROCESS (process
)->infd
;
2485 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2486 datagram_address
[channel
].len
);
2489 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2491 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2492 Returns nil upon error setting address, ADDRESS otherwise. */)
2494 Lisp_Object process
, address
;
2499 CHECK_PROCESS (process
);
2501 if (!DATAGRAM_CONN_P (process
))
2504 channel
= XPROCESS (process
)->infd
;
2506 len
= get_lisp_to_sockaddr_size (address
, &family
);
2507 if (datagram_address
[channel
].len
!= len
)
2509 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2515 static struct socket_options
{
2516 /* The name of this option. Should be lowercase version of option
2517 name without SO_ prefix. */
2519 /* Option level SOL_... */
2521 /* Option number SO_... */
2523 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2524 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2525 } socket_options
[] =
2527 #ifdef SO_BINDTODEVICE
2528 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2531 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2534 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2537 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2540 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2543 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2546 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2549 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2551 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2554 /* Set option OPT to value VAL on socket S.
2556 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2557 Signals an error if setting a known option fails.
2561 set_socket_option (s
, opt
, val
)
2563 Lisp_Object opt
, val
;
2566 struct socket_options
*sopt
;
2571 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2572 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2573 if (strcmp (name
, sopt
->name
) == 0)
2576 switch (sopt
->opttype
)
2581 optval
= NILP (val
) ? 0 : 1;
2582 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2583 &optval
, sizeof (optval
));
2591 optval
= XINT (val
);
2593 error ("Bad option value for %s", name
);
2594 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2595 &optval
, sizeof (optval
));
2599 #ifdef SO_BINDTODEVICE
2602 char devname
[IFNAMSIZ
+1];
2604 /* This is broken, at least in the Linux 2.4 kernel.
2605 To unbind, the arg must be a zero integer, not the empty string.
2606 This should work on all systems. KFS. 2003-09-23. */
2607 bzero (devname
, sizeof devname
);
2610 char *arg
= (char *) SDATA (val
);
2611 int len
= min (strlen (arg
), IFNAMSIZ
);
2612 bcopy (arg
, devname
, len
);
2614 else if (!NILP (val
))
2615 error ("Bad option value for %s", name
);
2616 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2625 struct linger linger
;
2628 linger
.l_linger
= 0;
2630 linger
.l_linger
= XINT (val
);
2632 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2633 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2634 &linger
, sizeof (linger
));
2644 report_file_error ("Cannot set network option",
2645 Fcons (opt
, Fcons (val
, Qnil
)));
2646 return (1 << sopt
->optbit
);
2650 DEFUN ("set-network-process-option",
2651 Fset_network_process_option
, Sset_network_process_option
,
2653 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2654 See `make-network-process' for a list of options and values.
2655 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2656 OPTION is not a supported option, return nil instead; otherwise return t. */)
2657 (process
, option
, value
, no_error
)
2658 Lisp_Object process
, option
, value
;
2659 Lisp_Object no_error
;
2662 struct Lisp_Process
*p
;
2664 CHECK_PROCESS (process
);
2665 p
= XPROCESS (process
);
2666 if (!NETCONN1_P (p
))
2667 error ("Process is not a network process");
2671 error ("Process is not running");
2673 if (set_socket_option (s
, option
, value
))
2675 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2679 if (NILP (no_error
))
2680 error ("Unknown or unsupported option");
2686 /* A version of request_sigio suitable for a record_unwind_protect. */
2690 unwind_request_sigio (dummy
)
2693 if (interrupt_input
)
2699 /* Create a network stream/datagram client/server process. Treated
2700 exactly like a normal process when reading and writing. Primary
2701 differences are in status display and process deletion. A network
2702 connection has no PID; you cannot signal it. All you can do is
2703 stop/continue it and deactivate/close it via delete-process */
2705 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2707 doc
: /* Create and return a network server or client process.
2709 In Emacs, network connections are represented by process objects, so
2710 input and output work as for subprocesses and `delete-process' closes
2711 a network connection. However, a network process has no process id,
2712 it cannot be signaled, and the status codes are different from normal
2715 Arguments are specified as keyword/argument pairs. The following
2716 arguments are defined:
2718 :name NAME -- NAME is name for process. It is modified if necessary
2721 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2722 with the process. Process output goes at end of that buffer, unless
2723 you specify an output stream or filter function to handle the output.
2724 BUFFER may be also nil, meaning that this process is not associated
2727 :host HOST -- HOST is name of the host to connect to, or its IP
2728 address. The symbol `local' specifies the local host. If specified
2729 for a server process, it must be a valid name or address for the local
2730 host, and only clients connecting to that address will be accepted.
2732 :service SERVICE -- SERVICE is name of the service desired, or an
2733 integer specifying a port number to connect to. If SERVICE is t,
2734 a random port number is selected for the server. (If Emacs was
2735 compiled with getaddrinfo, a port number can also be specified as a
2736 string, e.g. "80", as well as an integer. This is not portable.)
2738 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2739 stream type connection, `datagram' creates a datagram type connection.
2741 :family FAMILY -- FAMILY is the address (and protocol) family for the
2742 service specified by HOST and SERVICE. The default (nil) is to use
2743 whatever address family (IPv4 or IPv6) that is defined for the host
2744 and port number specified by HOST and SERVICE. Other address families
2746 local -- for a local (i.e. UNIX) address specified by SERVICE.
2747 ipv4 -- use IPv4 address family only.
2748 ipv6 -- use IPv6 address family only.
2750 :local ADDRESS -- ADDRESS is the local address used for the connection.
2751 This parameter is ignored when opening a client process. When specified
2752 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2754 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2755 connection. This parameter is ignored when opening a stream server
2756 process. For a datagram server process, it specifies the initial
2757 setting of the remote datagram address. When specified for a client
2758 process, the FAMILY, HOST, and SERVICE args are ignored.
2760 The format of ADDRESS depends on the address family:
2761 - An IPv4 address is represented as an vector of integers [A B C D P]
2762 corresponding to numeric IP address A.B.C.D and port number P.
2763 - A local address is represented as a string with the address in the
2764 local address space.
2765 - An "unsupported family" address is represented by a cons (F . AV)
2766 where F is the family number and AV is a vector containing the socket
2767 address data with one element per address data byte. Do not rely on
2768 this format in portable code, as it may depend on implementation
2769 defined constants, data sizes, and data structure alignment.
2771 :coding CODING -- If CODING is a symbol, it specifies the coding
2772 system used for both reading and writing for this process. If CODING
2773 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2774 ENCODING is used for writing.
2776 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2777 return without waiting for the connection to complete; instead, the
2778 sentinel function will be called with second arg matching "open" (if
2779 successful) or "failed" when the connect completes. Default is to use
2780 a blocking connect (i.e. wait) for stream type connections.
2782 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2783 running when Emacs is exited.
2785 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2786 In the stopped state, a server process does not accept new
2787 connections, and a client process does not handle incoming traffic.
2788 The stopped state is cleared by `continue-process' and set by
2791 :filter FILTER -- Install FILTER as the process filter.
2793 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2794 process filter are multibyte, otherwise they are unibyte.
2795 If this keyword is not specified, the strings are multibyte if
2796 `default-enable-multibyte-characters' is non-nil.
2798 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2800 :log LOG -- Install LOG as the server process log function. This
2801 function is called when the server accepts a network connection from a
2802 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2803 is the server process, CLIENT is the new process for the connection,
2804 and MESSAGE is a string.
2806 :plist PLIST -- Install PLIST as the new process' initial plist.
2808 :server QLEN -- if QLEN is non-nil, create a server process for the
2809 specified FAMILY, SERVICE, and connection type (stream or datagram).
2810 If QLEN is an integer, it is used as the max. length of the server's
2811 pending connection queue (also known as the backlog); the default
2812 queue length is 5. Default is to create a client process.
2814 The following network options can be specified for this connection:
2816 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2817 :dontroute BOOL -- Only send to directly connected hosts.
2818 :keepalive BOOL -- Send keep-alive messages on network stream.
2819 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2820 :oobinline BOOL -- Place out-of-band data in receive data stream.
2821 :priority INT -- Set protocol defined priority for sent packets.
2822 :reuseaddr BOOL -- Allow reusing a recently used local address
2823 (this is allowed by default for a server process).
2824 :bindtodevice NAME -- bind to interface NAME. Using this may require
2825 special privileges on some systems.
2827 Consult the relevant system programmer's manual pages for more
2828 information on using these options.
2831 A server process will listen for and accept connections from clients.
2832 When a client connection is accepted, a new network process is created
2833 for the connection with the following parameters:
2835 - The client's process name is constructed by concatenating the server
2836 process' NAME and a client identification string.
2837 - If the FILTER argument is non-nil, the client process will not get a
2838 separate process buffer; otherwise, the client's process buffer is a newly
2839 created buffer named after the server process' BUFFER name or process
2840 NAME concatenated with the client identification string.
2841 - The connection type and the process filter and sentinel parameters are
2842 inherited from the server process' TYPE, FILTER and SENTINEL.
2843 - The client process' contact info is set according to the client's
2844 addressing information (typically an IP address and a port number).
2845 - The client process' plist is initialized from the server's plist.
2847 Notice that the FILTER and SENTINEL args are never used directly by
2848 the server process. Also, the BUFFER argument is not used directly by
2849 the server process, but via the optional :log function, accepted (and
2850 failed) connections may be logged in the server process' buffer.
2852 The original argument list, modified with the actual connection
2853 information, is available via the `process-contact' function.
2855 usage: (make-network-process &rest ARGS) */)
2861 Lisp_Object contact
;
2862 struct Lisp_Process
*p
;
2863 #ifdef HAVE_GETADDRINFO
2864 struct addrinfo ai
, *res
, *lres
;
2865 struct addrinfo hints
;
2866 char *portstring
, portbuf
[128];
2867 #else /* HAVE_GETADDRINFO */
2868 struct _emacs_addrinfo
2874 struct sockaddr
*ai_addr
;
2875 struct _emacs_addrinfo
*ai_next
;
2877 #endif /* HAVE_GETADDRINFO */
2878 struct sockaddr_in address_in
;
2879 #ifdef HAVE_LOCAL_SOCKETS
2880 struct sockaddr_un address_un
;
2885 int s
= -1, outch
, inch
;
2886 struct gcpro gcpro1
;
2887 int count
= SPECPDL_INDEX ();
2889 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2891 Lisp_Object name
, buffer
, host
, service
, address
;
2892 Lisp_Object filter
, sentinel
;
2893 int is_non_blocking_client
= 0;
2894 int is_server
= 0, backlog
= 5;
2901 /* Save arguments for process-contact and clone-process. */
2902 contact
= Flist (nargs
, args
);
2906 /* Ensure socket support is loaded if available. */
2907 init_winsock (TRUE
);
2910 /* :type TYPE (nil: stream, datagram */
2911 tem
= Fplist_get (contact
, QCtype
);
2913 socktype
= SOCK_STREAM
;
2914 #ifdef DATAGRAM_SOCKETS
2915 else if (EQ (tem
, Qdatagram
))
2916 socktype
= SOCK_DGRAM
;
2919 error ("Unsupported connection type");
2922 tem
= Fplist_get (contact
, QCserver
);
2925 /* Don't support network sockets when non-blocking mode is
2926 not available, since a blocked Emacs is not useful. */
2927 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2928 error ("Network servers not supported");
2932 backlog
= XINT (tem
);
2936 /* Make QCaddress an alias for :local (server) or :remote (client). */
2937 QCaddress
= is_server
? QClocal
: QCremote
;
2940 if (!is_server
&& socktype
== SOCK_STREAM
2941 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2943 #ifndef NON_BLOCKING_CONNECT
2944 error ("Non-blocking connect not supported");
2946 is_non_blocking_client
= 1;
2950 name
= Fplist_get (contact
, QCname
);
2951 buffer
= Fplist_get (contact
, QCbuffer
);
2952 filter
= Fplist_get (contact
, QCfilter
);
2953 sentinel
= Fplist_get (contact
, QCsentinel
);
2955 CHECK_STRING (name
);
2958 /* Let's handle TERM before things get complicated ... */
2959 host
= Fplist_get (contact
, QChost
);
2960 CHECK_STRING (host
);
2962 service
= Fplist_get (contact
, QCservice
);
2963 if (INTEGERP (service
))
2964 port
= htons ((unsigned short) XINT (service
));
2967 struct servent
*svc_info
;
2968 CHECK_STRING (service
);
2969 svc_info
= getservbyname (SDATA (service
), "tcp");
2971 error ("Unknown service: %s", SDATA (service
));
2972 port
= svc_info
->s_port
;
2975 s
= connect_server (0);
2977 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2978 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2979 send_command (s
, C_DUMB
, 1, 0);
2981 #else /* not TERM */
2983 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2984 ai
.ai_socktype
= socktype
;
2989 /* :local ADDRESS or :remote ADDRESS */
2990 address
= Fplist_get (contact
, QCaddress
);
2991 if (!NILP (address
))
2993 host
= service
= Qnil
;
2995 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2996 error ("Malformed :address");
2997 ai
.ai_family
= family
;
2998 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2999 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
3003 /* :family FAMILY -- nil (for Inet), local, or integer. */
3004 tem
= Fplist_get (contact
, QCfamily
);
3007 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3013 #ifdef HAVE_LOCAL_SOCKETS
3014 else if (EQ (tem
, Qlocal
))
3018 else if (EQ (tem
, Qipv6
))
3021 else if (EQ (tem
, Qipv4
))
3023 else if (INTEGERP (tem
))
3024 family
= XINT (tem
);
3026 error ("Unknown address family");
3028 ai
.ai_family
= family
;
3030 /* :service SERVICE -- string, integer (port number), or t (random port). */
3031 service
= Fplist_get (contact
, QCservice
);
3033 #ifdef HAVE_LOCAL_SOCKETS
3034 if (family
== AF_LOCAL
)
3036 /* Host is not used. */
3038 CHECK_STRING (service
);
3039 bzero (&address_un
, sizeof address_un
);
3040 address_un
.sun_family
= AF_LOCAL
;
3041 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3042 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3043 ai
.ai_addrlen
= sizeof address_un
;
3048 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3049 host
= Fplist_get (contact
, QChost
);
3052 if (EQ (host
, Qlocal
))
3053 host
= build_string ("localhost");
3054 CHECK_STRING (host
);
3057 /* Slow down polling to every ten seconds.
3058 Some kernels have a bug which causes retrying connect to fail
3059 after a connect. Polling can interfere with gethostbyname too. */
3060 #ifdef POLL_FOR_INPUT
3061 if (socktype
== SOCK_STREAM
)
3063 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3064 bind_polling_period (10);
3068 #ifdef HAVE_GETADDRINFO
3069 /* If we have a host, use getaddrinfo to resolve both host and service.
3070 Otherwise, use getservbyname to lookup the service. */
3074 /* SERVICE can either be a string or int.
3075 Convert to a C string for later use by getaddrinfo. */
3076 if (EQ (service
, Qt
))
3078 else if (INTEGERP (service
))
3080 sprintf (portbuf
, "%ld", (long) XINT (service
));
3081 portstring
= portbuf
;
3085 CHECK_STRING (service
);
3086 portstring
= SDATA (service
);
3091 memset (&hints
, 0, sizeof (hints
));
3093 hints
.ai_family
= family
;
3094 hints
.ai_socktype
= socktype
;
3095 hints
.ai_protocol
= 0;
3097 #ifdef HAVE_RES_INIT
3101 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3103 #ifdef HAVE_GAI_STRERROR
3104 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3106 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3112 #endif /* HAVE_GETADDRINFO */
3114 /* We end up here if getaddrinfo is not defined, or in case no hostname
3115 has been specified (e.g. for a local server process). */
3117 if (EQ (service
, Qt
))
3119 else if (INTEGERP (service
))
3120 port
= htons ((unsigned short) XINT (service
));
3123 struct servent
*svc_info
;
3124 CHECK_STRING (service
);
3125 svc_info
= getservbyname (SDATA (service
),
3126 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3128 error ("Unknown service: %s", SDATA (service
));
3129 port
= svc_info
->s_port
;
3132 bzero (&address_in
, sizeof address_in
);
3133 address_in
.sin_family
= family
;
3134 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3135 address_in
.sin_port
= port
;
3137 #ifndef HAVE_GETADDRINFO
3140 struct hostent
*host_info_ptr
;
3142 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3143 as it may `hang' Emacs for a very long time. */
3147 #ifdef HAVE_RES_INIT
3151 host_info_ptr
= gethostbyname (SDATA (host
));
3156 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3157 host_info_ptr
->h_length
);
3158 family
= host_info_ptr
->h_addrtype
;
3159 address_in
.sin_family
= family
;
3162 /* Attempt to interpret host as numeric inet address */
3164 IN_ADDR numeric_addr
;
3165 numeric_addr
= inet_addr ((char *) SDATA (host
));
3166 if (NUMERIC_ADDR_ERROR
)
3167 error ("Unknown host \"%s\"", SDATA (host
));
3169 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3170 sizeof (address_in
.sin_addr
));
3174 #endif /* not HAVE_GETADDRINFO */
3176 ai
.ai_family
= family
;
3177 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3178 ai
.ai_addrlen
= sizeof address_in
;
3183 /* Previously this was compiled unconditionally, but that seems
3184 unnecessary on modern systems, and `unrequest_sigio' was a noop
3185 under X anyway. --lorentey */
3186 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3187 when connect is interrupted. So let's not let it get interrupted.
3188 Note we do not turn off polling, because polling is only used
3189 when not interrupt_input, and thus not normally used on the systems
3190 which have this bug. On systems which use polling, there's no way
3191 to quit if polling is turned off. */
3193 && !is_server
&& socktype
== SOCK_STREAM
)
3195 /* Comment from KFS: The original open-network-stream code
3196 didn't unwind protect this, but it seems like the proper
3197 thing to do. In any case, I don't see how it could harm to
3198 do this -- and it makes cleanup (using unbind_to) easier. */
3199 record_unwind_protect (unwind_request_sigio
, Qnil
);
3204 /* Do this in case we never enter the for-loop below. */
3205 count1
= SPECPDL_INDEX ();
3208 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3214 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3221 #ifdef DATAGRAM_SOCKETS
3222 if (!is_server
&& socktype
== SOCK_DGRAM
)
3224 #endif /* DATAGRAM_SOCKETS */
3226 #ifdef NON_BLOCKING_CONNECT
3227 if (is_non_blocking_client
)
3230 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3232 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3244 /* Make us close S if quit. */
3245 record_unwind_protect (close_file_unwind
, make_number (s
));
3247 /* Parse network options in the arg list.
3248 We simply ignore anything which isn't a known option (including other keywords).
3249 An error is signalled if setting a known option fails. */
3250 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3251 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3255 /* Configure as a server socket. */
3257 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3258 explicit :reuseaddr key to override this. */
3259 #ifdef HAVE_LOCAL_SOCKETS
3260 if (family
!= AF_LOCAL
)
3262 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3265 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3266 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3269 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3270 report_file_error ("Cannot bind server socket", Qnil
);
3272 #ifdef HAVE_GETSOCKNAME
3273 if (EQ (service
, Qt
))
3275 struct sockaddr_in sa1
;
3276 int len1
= sizeof (sa1
);
3277 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3279 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3280 service
= make_number (ntohs (sa1
.sin_port
));
3281 contact
= Fplist_put (contact
, QCservice
, service
);
3286 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3287 report_file_error ("Cannot listen on server socket", Qnil
);
3295 /* This turns off all alarm-based interrupts; the
3296 bind_polling_period call above doesn't always turn all the
3297 short-interval ones off, especially if interrupt_input is
3300 It'd be nice to be able to control the connect timeout
3301 though. Would non-blocking connect calls be portable?
3303 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3305 turn_on_atimers (0);
3307 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3310 turn_on_atimers (1);
3312 if (ret
== 0 || xerrno
== EISCONN
)
3314 /* The unwind-protect will be discarded afterwards.
3315 Likewise for immediate_quit. */
3319 #ifdef NON_BLOCKING_CONNECT
3321 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3325 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3333 /* Discard the unwind protect closing S. */
3334 specpdl_ptr
= specpdl
+ count1
;
3338 if (xerrno
== EINTR
)
3344 #ifdef DATAGRAM_SOCKETS
3345 if (socktype
== SOCK_DGRAM
)
3347 if (datagram_address
[s
].sa
)
3349 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3350 datagram_address
[s
].len
= lres
->ai_addrlen
;
3354 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3355 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3358 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3359 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3360 conv_lisp_to_sockaddr (rfamily
, remote
,
3361 datagram_address
[s
].sa
, rlen
);
3365 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3368 contact
= Fplist_put (contact
, QCaddress
,
3369 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3370 #ifdef HAVE_GETSOCKNAME
3373 struct sockaddr_in sa1
;
3374 int len1
= sizeof (sa1
);
3375 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3376 contact
= Fplist_put (contact
, QClocal
,
3377 conv_sockaddr_to_lisp (&sa1
, len1
));
3384 #ifdef HAVE_GETADDRINFO
3393 /* Discard the unwind protect for closing S, if any. */
3394 specpdl_ptr
= specpdl
+ count1
;
3396 /* Unwind bind_polling_period and request_sigio. */
3397 unbind_to (count
, Qnil
);
3401 /* If non-blocking got this far - and failed - assume non-blocking is
3402 not supported after all. This is probably a wrong assumption, but
3403 the normal blocking calls to open-network-stream handles this error
3405 if (is_non_blocking_client
)
3410 report_file_error ("make server process failed", contact
);
3412 report_file_error ("make client process failed", contact
);
3415 #endif /* not TERM */
3421 buffer
= Fget_buffer_create (buffer
);
3422 proc
= make_process (name
);
3424 chan_process
[inch
] = proc
;
3427 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3430 fcntl (inch
, F_SETFL
, O_NDELAY
);
3434 p
= XPROCESS (proc
);
3436 p
->childp
= contact
;
3437 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3440 p
->sentinel
= sentinel
;
3442 p
->filter_multibyte
= !NILP (buffer_defaults
.enable_multibyte_characters
);
3443 /* Override the above only if :filter-multibyte is specified. */
3444 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3445 p
->filter_multibyte
= !NILP (Fplist_get (contact
, QCfilter_multibyte
));
3446 p
->log
= Fplist_get (contact
, QClog
);
3447 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3448 p
->kill_without_query
= 1;
3449 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3454 if (is_server
&& socktype
== SOCK_STREAM
)
3455 p
->status
= Qlisten
;
3457 /* Make the process marker point into the process buffer (if any). */
3458 if (BUFFERP (buffer
))
3459 set_marker_both (p
->mark
, buffer
,
3460 BUF_ZV (XBUFFER (buffer
)),
3461 BUF_ZV_BYTE (XBUFFER (buffer
)));
3463 #ifdef NON_BLOCKING_CONNECT
3464 if (is_non_blocking_client
)
3466 /* We may get here if connect did succeed immediately. However,
3467 in that case, we still need to signal this like a non-blocking
3469 p
->status
= Qconnect
;
3470 if (!FD_ISSET (inch
, &connect_wait_mask
))
3472 FD_SET (inch
, &connect_wait_mask
);
3473 num_pending_connects
++;
3478 /* A server may have a client filter setting of Qt, but it must
3479 still listen for incoming connects unless it is stopped. */
3480 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3481 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3483 FD_SET (inch
, &input_wait_mask
);
3484 FD_SET (inch
, &non_keyboard_wait_mask
);
3487 if (inch
> max_process_desc
)
3488 max_process_desc
= inch
;
3490 tem
= Fplist_member (contact
, QCcoding
);
3491 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3492 tem
= Qnil
; /* No error message (too late!). */
3495 /* Setup coding systems for communicating with the network stream. */
3496 struct gcpro gcpro1
;
3497 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3498 Lisp_Object coding_systems
= Qt
;
3499 Lisp_Object args
[5], val
;
3503 val
= XCAR (XCDR (tem
));
3507 else if (!NILP (Vcoding_system_for_read
))
3508 val
= Vcoding_system_for_read
;
3509 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3510 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3511 /* We dare not decode end-of-line format by setting VAL to
3512 Qraw_text, because the existing Emacs Lisp libraries
3513 assume that they receive bare code including a sequene of
3518 if (NILP (host
) || NILP (service
))
3519 coding_systems
= Qnil
;
3522 args
[0] = Qopen_network_stream
, args
[1] = name
,
3523 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3525 coding_systems
= Ffind_operation_coding_system (5, args
);
3528 if (CONSP (coding_systems
))
3529 val
= XCAR (coding_systems
);
3530 else if (CONSP (Vdefault_process_coding_system
))
3531 val
= XCAR (Vdefault_process_coding_system
);
3535 p
->decode_coding_system
= val
;
3539 val
= XCAR (XCDR (tem
));
3543 else if (!NILP (Vcoding_system_for_write
))
3544 val
= Vcoding_system_for_write
;
3545 else if (NILP (current_buffer
->enable_multibyte_characters
))
3549 if (EQ (coding_systems
, Qt
))
3551 if (NILP (host
) || NILP (service
))
3552 coding_systems
= Qnil
;
3555 args
[0] = Qopen_network_stream
, args
[1] = name
,
3556 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3558 coding_systems
= Ffind_operation_coding_system (5, args
);
3562 if (CONSP (coding_systems
))
3563 val
= XCDR (coding_systems
);
3564 else if (CONSP (Vdefault_process_coding_system
))
3565 val
= XCDR (Vdefault_process_coding_system
);
3569 p
->encode_coding_system
= val
;
3571 setup_process_coding_systems (proc
);
3573 p
->decoding_buf
= make_uninit_string (0);
3574 p
->decoding_carryover
= 0;
3575 p
->encoding_buf
= make_uninit_string (0);
3577 p
->inherit_coding_system_flag
3578 = !(!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
);
3583 #endif /* HAVE_SOCKETS */
3586 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3589 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3590 doc
: /* Return an alist of all network interfaces and their network address.
3591 Each element is a cons, the car of which is a string containing the
3592 interface name, and the cdr is the network address in internal
3593 format; see the description of ADDRESS in `make-network-process'. */)
3596 struct ifconf ifconf
;
3597 struct ifreq
*ifreqs
= NULL
;
3602 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3608 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3609 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3616 ifconf
.ifc_len
= buf_size
;
3617 ifconf
.ifc_req
= ifreqs
;
3618 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3624 if (ifconf
.ifc_len
== buf_size
)
3628 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3631 while (--ifaces
>= 0)
3633 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3634 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3635 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3637 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3638 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3639 res
= Fcons (Fcons (build_string (namebuf
),
3640 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3641 sizeof (struct sockaddr
))),
3647 #endif /* SIOCGIFCONF */
3649 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3656 static struct ifflag_def ifflag_table
[] = {
3660 #ifdef IFF_BROADCAST
3661 { IFF_BROADCAST
, "broadcast" },
3664 { IFF_DEBUG
, "debug" },
3667 { IFF_LOOPBACK
, "loopback" },
3669 #ifdef IFF_POINTOPOINT
3670 { IFF_POINTOPOINT
, "pointopoint" },
3673 { IFF_RUNNING
, "running" },
3676 { IFF_NOARP
, "noarp" },
3679 { IFF_PROMISC
, "promisc" },
3681 #ifdef IFF_NOTRAILERS
3682 { IFF_NOTRAILERS
, "notrailers" },
3685 { IFF_ALLMULTI
, "allmulti" },
3688 { IFF_MASTER
, "master" },
3691 { IFF_SLAVE
, "slave" },
3693 #ifdef IFF_MULTICAST
3694 { IFF_MULTICAST
, "multicast" },
3697 { IFF_PORTSEL
, "portsel" },
3699 #ifdef IFF_AUTOMEDIA
3700 { IFF_AUTOMEDIA
, "automedia" },
3703 { IFF_DYNAMIC
, "dynamic" },
3706 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3709 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3712 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3715 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3718 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3723 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3724 doc
: /* Return information about network interface named IFNAME.
3725 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3726 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3727 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3728 FLAGS is the current flags of the interface. */)
3733 Lisp_Object res
= Qnil
;
3738 CHECK_STRING (ifname
);
3740 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3741 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3743 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3748 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3749 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3751 int flags
= rq
.ifr_flags
;
3752 struct ifflag_def
*fp
;
3756 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3758 if (flags
& fp
->flag_bit
)
3760 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3761 flags
-= fp
->flag_bit
;
3764 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3766 if (flags
& (1 << fnum
))
3768 elt
= Fcons (make_number (fnum
), elt
);
3773 res
= Fcons (elt
, res
);
3776 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3777 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3779 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3780 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3784 for (n
= 0; n
< 6; n
++)
3785 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3786 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3789 res
= Fcons (elt
, res
);
3792 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3793 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3796 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3797 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3799 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3803 res
= Fcons (elt
, res
);
3806 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3807 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3810 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3813 res
= Fcons (elt
, res
);
3816 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3817 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3820 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3823 res
= Fcons (elt
, res
);
3827 return any
? res
: Qnil
;
3830 #endif /* HAVE_SOCKETS */
3832 /* Turn off input and output for process PROC. */
3835 deactivate_process (proc
)
3838 register int inchannel
, outchannel
;
3839 register struct Lisp_Process
*p
= XPROCESS (proc
);
3841 inchannel
= p
->infd
;
3842 outchannel
= p
->outfd
;
3844 #ifdef ADAPTIVE_READ_BUFFERING
3845 if (p
->read_output_delay
> 0)
3847 if (--process_output_delay_count
< 0)
3848 process_output_delay_count
= 0;
3849 p
->read_output_delay
= 0;
3850 p
->read_output_skip
= 0;
3856 /* Beware SIGCHLD hereabouts. */
3857 flush_pending_output (inchannel
);
3860 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3861 sys$
dassgn (outchannel
);
3862 vs
= get_vms_process_pointer (p
->pid
);
3864 give_back_vms_process_stuff (vs
);
3867 emacs_close (inchannel
);
3868 if (outchannel
>= 0 && outchannel
!= inchannel
)
3869 emacs_close (outchannel
);
3874 #ifdef DATAGRAM_SOCKETS
3875 if (DATAGRAM_CHAN_P (inchannel
))
3877 xfree (datagram_address
[inchannel
].sa
);
3878 datagram_address
[inchannel
].sa
= 0;
3879 datagram_address
[inchannel
].len
= 0;
3882 chan_process
[inchannel
] = Qnil
;
3883 FD_CLR (inchannel
, &input_wait_mask
);
3884 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3885 #ifdef NON_BLOCKING_CONNECT
3886 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3888 FD_CLR (inchannel
, &connect_wait_mask
);
3889 if (--num_pending_connects
< 0)
3893 if (inchannel
== max_process_desc
)
3896 /* We just closed the highest-numbered process input descriptor,
3897 so recompute the highest-numbered one now. */
3898 max_process_desc
= 0;
3899 for (i
= 0; i
< MAXDESC
; i
++)
3900 if (!NILP (chan_process
[i
]))
3901 max_process_desc
= i
;
3906 /* Close all descriptors currently in use for communication
3907 with subprocess. This is used in a newly-forked subprocess
3908 to get rid of irrelevant descriptors. */
3911 close_process_descs ()
3915 for (i
= 0; i
< MAXDESC
; i
++)
3917 Lisp_Object process
;
3918 process
= chan_process
[i
];
3919 if (!NILP (process
))
3921 int in
= XPROCESS (process
)->infd
;
3922 int out
= XPROCESS (process
)->outfd
;
3925 if (out
>= 0 && in
!= out
)
3932 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3934 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3935 It is read into the process' buffers or given to their filter functions.
3936 Non-nil arg PROCESS means do not return until some output has been received
3939 Non-nil second arg SECONDS and third arg MILLISEC are number of
3940 seconds and milliseconds to wait; return after that much time whether
3941 or not there is input. If SECONDS is a floating point number,
3942 it specifies a fractional number of seconds to wait.
3944 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3945 from PROCESS, suspending reading output from other processes.
3946 If JUST-THIS-ONE is an integer, don't run any timers either.
3947 Return non-nil if we received any output before the timeout expired. */)
3948 (process
, seconds
, millisec
, just_this_one
)
3949 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
3951 int secs
, usecs
= 0;
3953 if (! NILP (process
))
3954 CHECK_PROCESS (process
);
3956 just_this_one
= Qnil
;
3958 if (!NILP (seconds
))
3960 if (INTEGERP (seconds
))
3961 secs
= XINT (seconds
);
3962 else if (FLOATP (seconds
))
3964 double timeout
= XFLOAT_DATA (seconds
);
3965 secs
= (int) timeout
;
3966 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3969 wrong_type_argument (Qnumberp
, seconds
);
3971 if (INTEGERP (millisec
))
3974 usecs
+= XINT (millisec
) * 1000;
3975 carry
= usecs
/ 1000000;
3977 if ((usecs
-= carry
* 1000000) < 0)
3984 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3985 secs
= -1, usecs
= 0;
3988 secs
= NILP (process
) ? -1 : 0;
3991 (wait_reading_process_output (secs
, usecs
, 0, 0,
3993 !NILP (process
) ? XPROCESS (process
) : NULL
,
3994 NILP (just_this_one
) ? 0 :
3995 !INTEGERP (just_this_one
) ? 1 : -1)
3999 /* Accept a connection for server process SERVER on CHANNEL. */
4001 static int connect_counter
= 0;
4004 server_accept_connection (server
, channel
)
4008 Lisp_Object proc
, caller
, name
, buffer
;
4009 Lisp_Object contact
, host
, service
;
4010 struct Lisp_Process
*ps
= XPROCESS (server
);
4011 struct Lisp_Process
*p
;
4015 struct sockaddr_in in
;
4017 struct sockaddr_in6 in6
;
4019 #ifdef HAVE_LOCAL_SOCKETS
4020 struct sockaddr_un un
;
4023 int len
= sizeof saddr
;
4025 s
= accept (channel
, &saddr
.sa
, &len
);
4034 if (code
== EWOULDBLOCK
)
4038 if (!NILP (ps
->log
))
4039 call3 (ps
->log
, server
, Qnil
,
4040 concat3 (build_string ("accept failed with code"),
4041 Fnumber_to_string (make_number (code
)),
4042 build_string ("\n")));
4048 /* Setup a new process to handle the connection. */
4050 /* Generate a unique identification of the caller, and build contact
4051 information for this process. */
4054 switch (saddr
.sa
.sa_family
)
4058 Lisp_Object args
[5];
4059 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4060 args
[0] = build_string ("%d.%d.%d.%d");
4061 args
[1] = make_number (*ip
++);
4062 args
[2] = make_number (*ip
++);
4063 args
[3] = make_number (*ip
++);
4064 args
[4] = make_number (*ip
++);
4065 host
= Fformat (5, args
);
4066 service
= make_number (ntohs (saddr
.in
.sin_port
));
4068 args
[0] = build_string (" <%s:%d>");
4071 caller
= Fformat (3, args
);
4078 Lisp_Object args
[9];
4079 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4081 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4082 for (i
= 0; i
< 8; i
++)
4083 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4084 host
= Fformat (9, args
);
4085 service
= make_number (ntohs (saddr
.in
.sin_port
));
4087 args
[0] = build_string (" <[%s]:%d>");
4090 caller
= Fformat (3, args
);
4095 #ifdef HAVE_LOCAL_SOCKETS
4099 caller
= Fnumber_to_string (make_number (connect_counter
));
4100 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
4104 /* Create a new buffer name for this process if it doesn't have a
4105 filter. The new buffer name is based on the buffer name or
4106 process name of the server process concatenated with the caller
4109 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4113 buffer
= ps
->buffer
;
4115 buffer
= Fbuffer_name (buffer
);
4120 buffer
= concat2 (buffer
, caller
);
4121 buffer
= Fget_buffer_create (buffer
);
4125 /* Generate a unique name for the new server process. Combine the
4126 server process name with the caller identification. */
4128 name
= concat2 (ps
->name
, caller
);
4129 proc
= make_process (name
);
4131 chan_process
[s
] = proc
;
4134 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4137 fcntl (s
, F_SETFL
, O_NDELAY
);
4141 p
= XPROCESS (proc
);
4143 /* Build new contact information for this setup. */
4144 contact
= Fcopy_sequence (ps
->childp
);
4145 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4146 contact
= Fplist_put (contact
, QChost
, host
);
4147 if (!NILP (service
))
4148 contact
= Fplist_put (contact
, QCservice
, service
);
4149 contact
= Fplist_put (contact
, QCremote
,
4150 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4151 #ifdef HAVE_GETSOCKNAME
4153 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4154 contact
= Fplist_put (contact
, QClocal
,
4155 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4158 p
->childp
= contact
;
4159 p
->plist
= Fcopy_sequence (ps
->plist
);
4162 p
->sentinel
= ps
->sentinel
;
4163 p
->filter
= ps
->filter
;
4170 /* Client processes for accepted connections are not stopped initially. */
4171 if (!EQ (p
->filter
, Qt
))
4173 FD_SET (s
, &input_wait_mask
);
4174 FD_SET (s
, &non_keyboard_wait_mask
);
4177 if (s
> max_process_desc
)
4178 max_process_desc
= s
;
4180 /* Setup coding system for new process based on server process.
4181 This seems to be the proper thing to do, as the coding system
4182 of the new process should reflect the settings at the time the
4183 server socket was opened; not the current settings. */
4185 p
->decode_coding_system
= ps
->decode_coding_system
;
4186 p
->encode_coding_system
= ps
->encode_coding_system
;
4187 setup_process_coding_systems (proc
);
4189 p
->decoding_buf
= make_uninit_string (0);
4190 p
->decoding_carryover
= 0;
4191 p
->encoding_buf
= make_uninit_string (0);
4193 p
->inherit_coding_system_flag
4194 = (NILP (buffer
) ? 0 : ps
->inherit_coding_system_flag
);
4196 if (!NILP (ps
->log
))
4197 call3 (ps
->log
, server
, proc
,
4198 concat3 (build_string ("accept from "),
4199 (STRINGP (host
) ? host
: build_string ("-")),
4200 build_string ("\n")));
4202 if (!NILP (p
->sentinel
))
4203 exec_sentinel (proc
,
4204 concat3 (build_string ("open from "),
4205 (STRINGP (host
) ? host
: build_string ("-")),
4206 build_string ("\n")));
4209 /* This variable is different from waiting_for_input in keyboard.c.
4210 It is used to communicate to a lisp process-filter/sentinel (via the
4211 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4212 for user-input when that process-filter was called.
4213 waiting_for_input cannot be used as that is by definition 0 when
4214 lisp code is being evalled.
4215 This is also used in record_asynch_buffer_change.
4216 For that purpose, this must be 0
4217 when not inside wait_reading_process_output. */
4218 static int waiting_for_user_input_p
;
4221 wait_reading_process_output_unwind (data
)
4224 waiting_for_user_input_p
= XINT (data
);
4228 /* This is here so breakpoints can be put on it. */
4230 wait_reading_process_output_1 ()
4234 /* Use a wrapper around select to work around a bug in gdb 5.3.
4235 Normally, the wrapper is optimzed away by inlining.
4237 If emacs is stopped inside select, the gdb backtrace doesn't
4238 show the function which called select, so it is practically
4239 impossible to step through wait_reading_process_output. */
4243 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4245 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4248 return select (n
, rfd
, wfd
, xfd
, tmo
);
4250 #define select select_wrapper
4253 /* Read and dispose of subprocess output while waiting for timeout to
4254 elapse and/or keyboard input to be available.
4257 timeout in seconds, or
4258 zero for no limit, or
4259 -1 means gobble data immediately available but don't wait for any.
4262 an additional duration to wait, measured in microseconds.
4263 If this is nonzero and time_limit is 0, then the timeout
4264 consists of MICROSECS only.
4266 READ_KBD is a lisp value:
4267 0 to ignore keyboard input, or
4268 1 to return when input is available, or
4269 -1 meaning caller will actually read the input, so don't throw to
4270 the quit handler, or
4272 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4273 output that arrives.
4275 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4276 (and gobble terminal input into the buffer if any arrives).
4278 If WAIT_PROC is specified, wait until something arrives from that
4279 process. The return value is true if we read some input from
4282 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4283 (suspending output from other processes). A negative value
4284 means don't run any timers either.
4286 If WAIT_PROC is specified, then the function returns true if we
4287 received input from that process before the timeout elapsed.
4288 Otherwise, return true if we received input from any process. */
4291 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4292 wait_for_cell
, wait_proc
, just_wait_proc
)
4293 int time_limit
, microsecs
, read_kbd
, do_display
;
4294 Lisp_Object wait_for_cell
;
4295 struct Lisp_Process
*wait_proc
;
4298 register int channel
, nfds
;
4299 SELECT_TYPE Available
;
4300 #ifdef NON_BLOCKING_CONNECT
4301 SELECT_TYPE Connecting
;
4304 int check_delay
, no_avail
;
4307 EMACS_TIME timeout
, end_time
;
4308 int wait_channel
= -1;
4309 int got_some_input
= 0;
4310 int count
= SPECPDL_INDEX ();
4312 FD_ZERO (&Available
);
4313 #ifdef NON_BLOCKING_CONNECT
4314 FD_ZERO (&Connecting
);
4317 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4318 if (wait_proc
!= NULL
)
4319 wait_channel
= wait_proc
->infd
;
4321 record_unwind_protect (wait_reading_process_output_unwind
,
4322 make_number (waiting_for_user_input_p
));
4323 waiting_for_user_input_p
= read_kbd
;
4325 /* Since we may need to wait several times,
4326 compute the absolute time to return at. */
4327 if (time_limit
|| microsecs
)
4329 EMACS_GET_TIME (end_time
);
4330 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4331 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4333 #ifdef POLL_INTERRUPTED_SYS_CALL
4334 /* AlainF 5-Jul-1996
4335 HP-UX 10.10 seem to have problems with signals coming in
4336 Causes "poll: interrupted system call" messages when Emacs is run
4338 Turn off periodic alarms (in case they are in use),
4339 and then turn off any other atimers. */
4341 turn_on_atimers (0);
4342 #endif /* POLL_INTERRUPTED_SYS_CALL */
4346 int timeout_reduced_for_timers
= 0;
4348 /* If calling from keyboard input, do not quit
4349 since we want to return C-g as an input character.
4350 Otherwise, do pending quit if requested. */
4354 else if (interrupt_input_pending
)
4355 handle_async_input ();
4358 /* Exit now if the cell we're waiting for became non-nil. */
4359 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4362 /* Compute time from now till when time limit is up */
4363 /* Exit if already run out */
4364 if (time_limit
== -1)
4366 /* -1 specified for timeout means
4367 gobble output available now
4368 but don't wait at all. */
4370 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4372 else if (time_limit
|| microsecs
)
4374 EMACS_GET_TIME (timeout
);
4375 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4376 if (EMACS_TIME_NEG_P (timeout
))
4381 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4384 /* Normally we run timers here.
4385 But not if wait_for_cell; in those cases,
4386 the wait is supposed to be short,
4387 and those callers cannot handle running arbitrary Lisp code here. */
4388 if (NILP (wait_for_cell
)
4389 && just_wait_proc
>= 0)
4391 EMACS_TIME timer_delay
;
4395 int old_timers_run
= timers_run
;
4396 struct buffer
*old_buffer
= current_buffer
;
4398 timer_delay
= timer_check (1);
4400 /* If a timer has run, this might have changed buffers
4401 an alike. Make read_key_sequence aware of that. */
4402 if (timers_run
!= old_timers_run
4403 && old_buffer
!= current_buffer
4404 && waiting_for_user_input_p
== -1)
4405 record_asynch_buffer_change ();
4407 if (timers_run
!= old_timers_run
&& do_display
)
4408 /* We must retry, since a timer may have requeued itself
4409 and that could alter the time_delay. */
4410 redisplay_preserve_echo_area (9);
4414 while (!detect_input_pending ());
4416 /* If there is unread keyboard input, also return. */
4418 && requeued_events_pending_p ())
4421 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4423 EMACS_TIME difference
;
4424 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4425 if (EMACS_TIME_NEG_P (difference
))
4427 timeout
= timer_delay
;
4428 timeout_reduced_for_timers
= 1;
4431 /* If time_limit is -1, we are not going to wait at all. */
4432 else if (time_limit
!= -1)
4434 /* This is so a breakpoint can be put here. */
4435 wait_reading_process_output_1 ();
4439 /* Cause C-g and alarm signals to take immediate action,
4440 and cause input available signals to zero out timeout.
4442 It is important that we do this before checking for process
4443 activity. If we get a SIGCHLD after the explicit checks for
4444 process activity, timeout is the only way we will know. */
4446 set_waiting_for_input (&timeout
);
4448 /* If status of something has changed, and no input is
4449 available, notify the user of the change right away. After
4450 this explicit check, we'll let the SIGCHLD handler zap
4451 timeout to get our attention. */
4452 if (update_tick
!= process_tick
&& do_display
)
4455 #ifdef NON_BLOCKING_CONNECT
4459 Atemp
= input_wait_mask
;
4461 /* On Mac OS X 10.0, the SELECT system call always says input is
4462 present (for reading) at stdin, even when none is. This
4463 causes the call to SELECT below to return 1 and
4464 status_notify not to be called. As a result output of
4465 subprocesses are incorrectly discarded.
4469 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4471 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4472 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4475 #ifdef NON_BLOCKING_CONNECT
4476 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4480 (SELECT_TYPE
*)0, &timeout
)
4483 /* It's okay for us to do this and then continue with
4484 the loop, since timeout has already been zeroed out. */
4485 clear_waiting_for_input ();
4486 status_notify (NULL
);
4490 /* Don't wait for output from a non-running process. Just
4491 read whatever data has already been received. */
4492 if (wait_proc
&& wait_proc
->raw_status_new
)
4493 update_status (wait_proc
);
4495 && ! EQ (wait_proc
->status
, Qrun
)
4496 && ! EQ (wait_proc
->status
, Qconnect
))
4498 int nread
, total_nread
= 0;
4500 clear_waiting_for_input ();
4501 XSETPROCESS (proc
, wait_proc
);
4503 /* Read data from the process, until we exhaust it. */
4504 while (wait_proc
->infd
>= 0)
4506 nread
= read_process_output (proc
, wait_proc
->infd
);
4512 total_nread
+= nread
;
4514 else if (nread
== -1 && EIO
== errno
)
4518 else if (nread
== -1 && EAGAIN
== errno
)
4522 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4526 if (total_nread
> 0 && do_display
)
4527 redisplay_preserve_echo_area (10);
4532 /* Wait till there is something to do */
4534 if (wait_proc
&& just_wait_proc
)
4536 if (wait_proc
->infd
< 0) /* Terminated */
4538 FD_SET (wait_proc
->infd
, &Available
);
4540 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4542 else if (!NILP (wait_for_cell
))
4544 Available
= non_process_wait_mask
;
4546 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4551 Available
= non_keyboard_wait_mask
;
4553 Available
= input_wait_mask
;
4554 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4555 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4558 /* If frame size has changed or the window is newly mapped,
4559 redisplay now, before we start to wait. There is a race
4560 condition here; if a SIGIO arrives between now and the select
4561 and indicates that a frame is trashed, the select may block
4562 displaying a trashed screen. */
4563 if (frame_garbaged
&& do_display
)
4565 clear_waiting_for_input ();
4566 redisplay_preserve_echo_area (11);
4568 set_waiting_for_input (&timeout
);
4572 if (read_kbd
&& detect_input_pending ())
4579 #ifdef NON_BLOCKING_CONNECT
4581 Connecting
= connect_wait_mask
;
4584 #ifdef ADAPTIVE_READ_BUFFERING
4585 /* Set the timeout for adaptive read buffering if any
4586 process has non-zero read_output_skip and non-zero
4587 read_output_delay, and we are not reading output for a
4588 specific wait_channel. It is not executed if
4589 Vprocess_adaptive_read_buffering is nil. */
4590 if (process_output_skip
&& check_delay
> 0)
4592 int usecs
= EMACS_USECS (timeout
);
4593 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4594 usecs
= READ_OUTPUT_DELAY_MAX
;
4595 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4597 proc
= chan_process
[channel
];
4600 /* Find minimum non-zero read_output_delay among the
4601 processes with non-zero read_output_skip. */
4602 if (XPROCESS (proc
)->read_output_delay
> 0)
4605 if (!XPROCESS (proc
)->read_output_skip
)
4607 FD_CLR (channel
, &Available
);
4608 XPROCESS (proc
)->read_output_skip
= 0;
4609 if (XPROCESS (proc
)->read_output_delay
< usecs
)
4610 usecs
= XPROCESS (proc
)->read_output_delay
;
4613 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4614 process_output_skip
= 0;
4618 nfds
= select (max (max (max_process_desc
, max_keyboard_desc
),
4621 #ifdef NON_BLOCKING_CONNECT
4622 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4626 (SELECT_TYPE
*)0, &timeout
);
4631 /* Make C-g and alarm signals set flags again */
4632 clear_waiting_for_input ();
4634 /* If we woke up due to SIGWINCH, actually change size now. */
4635 do_pending_window_change (0);
4637 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4638 /* We wanted the full specified time, so return now. */
4642 if (xerrno
== EINTR
)
4645 /* Ultrix select seems to return ENOMEM when it is
4646 interrupted. Treat it just like EINTR. Bleah. Note
4647 that we want to test for the "ultrix" CPP symbol, not
4648 "__ultrix__"; the latter is only defined under GCC, but
4649 not by DEC's bundled CC. -JimB */
4650 else if (xerrno
== ENOMEM
)
4654 /* This happens for no known reason on ALLIANT.
4655 I am guessing that this is the right response. -- RMS. */
4656 else if (xerrno
== EFAULT
)
4659 else if (xerrno
== EBADF
)
4662 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4663 the child's closure of the pts gives the parent a SIGHUP, and
4664 the ptc file descriptor is automatically closed,
4665 yielding EBADF here or at select() call above.
4666 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4667 in m/ibmrt-aix.h), and here we just ignore the select error.
4668 Cleanup occurs c/o status_notify after SIGCLD. */
4669 no_avail
= 1; /* Cannot depend on values returned */
4675 error ("select error: %s", emacs_strerror (xerrno
));
4680 FD_ZERO (&Available
);
4681 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4684 #if defined(sun) && !defined(USG5_4)
4685 if (nfds
> 0 && keyboard_bit_set (&Available
)
4687 /* System sometimes fails to deliver SIGIO.
4689 David J. Mackenzie says that Emacs doesn't compile under
4690 Solaris if this code is enabled, thus the USG5_4 in the CPP
4691 conditional. "I haven't noticed any ill effects so far.
4692 If you find a Solaris expert somewhere, they might know
4694 kill (getpid (), SIGIO
);
4697 #if 0 /* When polling is used, interrupt_input is 0,
4698 so get_input_pending should read the input.
4699 So this should not be needed. */
4700 /* If we are using polling for input,
4701 and we see input available, make it get read now.
4702 Otherwise it might not actually get read for a second.
4703 And on hpux, since we turn off polling in wait_reading_process_output,
4704 it might never get read at all if we don't spend much time
4705 outside of wait_reading_process_output. */
4706 if (read_kbd
&& interrupt_input
4707 && keyboard_bit_set (&Available
)
4708 && input_polling_used ())
4709 kill (getpid (), SIGALRM
);
4712 /* Check for keyboard input */
4713 /* If there is any, return immediately
4714 to give it higher priority than subprocesses */
4718 int old_timers_run
= timers_run
;
4719 struct buffer
*old_buffer
= current_buffer
;
4722 if (detect_input_pending_run_timers (do_display
))
4724 swallow_events (do_display
);
4725 if (detect_input_pending_run_timers (do_display
))
4729 /* If a timer has run, this might have changed buffers
4730 an alike. Make read_key_sequence aware of that. */
4731 if (timers_run
!= old_timers_run
4732 && waiting_for_user_input_p
== -1
4733 && old_buffer
!= current_buffer
)
4734 record_asynch_buffer_change ();
4740 /* If there is unread keyboard input, also return. */
4742 && requeued_events_pending_p ())
4745 /* If we are not checking for keyboard input now,
4746 do process events (but don't run any timers).
4747 This is so that X events will be processed.
4748 Otherwise they may have to wait until polling takes place.
4749 That would causes delays in pasting selections, for example.
4751 (We used to do this only if wait_for_cell.) */
4752 if (read_kbd
== 0 && detect_input_pending ())
4754 swallow_events (do_display
);
4755 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4756 if (detect_input_pending ())
4761 /* Exit now if the cell we're waiting for became non-nil. */
4762 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4766 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4767 go read it. This can happen with X on BSD after logging out.
4768 In that case, there really is no input and no SIGIO,
4769 but select says there is input. */
4771 if (read_kbd
&& interrupt_input
4772 && keyboard_bit_set (&Available
) && ! noninteractive
)
4773 kill (getpid (), SIGIO
);
4777 got_some_input
|= nfds
> 0;
4779 /* If checking input just got us a size-change event from X,
4780 obey it now if we should. */
4781 if (read_kbd
|| ! NILP (wait_for_cell
))
4782 do_pending_window_change (0);
4784 /* Check for data from a process. */
4785 if (no_avail
|| nfds
== 0)
4788 /* Really FIRST_PROC_DESC should be 0 on Unix,
4789 but this is safer in the short run. */
4790 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4792 if (FD_ISSET (channel
, &Available
)
4793 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4797 /* If waiting for this channel, arrange to return as
4798 soon as no more input to be processed. No more
4800 if (wait_channel
== channel
)
4806 proc
= chan_process
[channel
];
4810 /* If this is a server stream socket, accept connection. */
4811 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4813 server_accept_connection (proc
, channel
);
4817 /* Read data from the process, starting with our
4818 buffered-ahead character if we have one. */
4820 nread
= read_process_output (proc
, channel
);
4823 /* Since read_process_output can run a filter,
4824 which can call accept-process-output,
4825 don't try to read from any other processes
4826 before doing the select again. */
4827 FD_ZERO (&Available
);
4830 redisplay_preserve_echo_area (12);
4833 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4836 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4837 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4839 else if (nread
== -1 && errno
== EAGAIN
)
4843 else if (nread
== -1 && errno
== EAGAIN
)
4845 /* Note that we cannot distinguish between no input
4846 available now and a closed pipe.
4847 With luck, a closed pipe will be accompanied by
4848 subprocess termination and SIGCHLD. */
4849 else if (nread
== 0 && !NETCONN_P (proc
))
4851 #endif /* O_NDELAY */
4852 #endif /* O_NONBLOCK */
4854 /* On some OSs with ptys, when the process on one end of
4855 a pty exits, the other end gets an error reading with
4856 errno = EIO instead of getting an EOF (0 bytes read).
4857 Therefore, if we get an error reading and errno =
4858 EIO, just continue, because the child process has
4859 exited and should clean itself up soon (e.g. when we
4862 However, it has been known to happen that the SIGCHLD
4863 got lost. So raise the signal again just in case.
4865 else if (nread
== -1 && errno
== EIO
)
4867 /* Clear the descriptor now, so we only raise the signal once. */
4868 FD_CLR (channel
, &input_wait_mask
);
4869 FD_CLR (channel
, &non_keyboard_wait_mask
);
4871 kill (getpid (), SIGCHLD
);
4873 #endif /* HAVE_PTYS */
4874 /* If we can detect process termination, don't consider the process
4875 gone just because its pipe is closed. */
4877 else if (nread
== 0 && !NETCONN_P (proc
))
4882 /* Preserve status of processes already terminated. */
4883 XPROCESS (proc
)->tick
= ++process_tick
;
4884 deactivate_process (proc
);
4885 if (XPROCESS (proc
)->raw_status_new
)
4886 update_status (XPROCESS (proc
));
4887 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4888 XPROCESS (proc
)->status
4889 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4892 #ifdef NON_BLOCKING_CONNECT
4893 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4894 && FD_ISSET (channel
, &connect_wait_mask
))
4896 struct Lisp_Process
*p
;
4898 FD_CLR (channel
, &connect_wait_mask
);
4899 if (--num_pending_connects
< 0)
4902 proc
= chan_process
[channel
];
4906 p
= XPROCESS (proc
);
4909 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4910 So only use it on systems where it is known to work. */
4912 int xlen
= sizeof(xerrno
);
4913 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4918 struct sockaddr pname
;
4919 int pnamelen
= sizeof(pname
);
4921 /* If connection failed, getpeername will fail. */
4923 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4925 /* Obtain connect failure code through error slippage. */
4928 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4935 p
->tick
= ++process_tick
;
4936 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4937 deactivate_process (proc
);
4942 /* Execute the sentinel here. If we had relied on
4943 status_notify to do it later, it will read input
4944 from the process before calling the sentinel. */
4945 exec_sentinel (proc
, build_string ("open\n"));
4946 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4948 FD_SET (p
->infd
, &input_wait_mask
);
4949 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
4953 #endif /* NON_BLOCKING_CONNECT */
4954 } /* end for each file descriptor */
4955 } /* end while exit conditions not met */
4957 unbind_to (count
, Qnil
);
4959 /* If calling from keyboard input, do not quit
4960 since we want to return C-g as an input character.
4961 Otherwise, do pending quit if requested. */
4964 /* Prevent input_pending from remaining set if we quit. */
4965 clear_input_pending ();
4968 #ifdef POLL_INTERRUPTED_SYS_CALL
4969 /* AlainF 5-Jul-1996
4970 HP-UX 10.10 seems to have problems with signals coming in
4971 Causes "poll: interrupted system call" messages when Emacs is run
4973 Turn periodic alarms back on */
4975 #endif /* POLL_INTERRUPTED_SYS_CALL */
4977 return got_some_input
;
4980 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4983 read_process_output_call (fun_and_args
)
4984 Lisp_Object fun_and_args
;
4986 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4990 read_process_output_error_handler (error
)
4993 cmd_error_internal (error
, "error in process filter: ");
4995 update_echo_area ();
4996 Fsleep_for (make_number (2), Qnil
);
5000 /* Read pending output from the process channel,
5001 starting with our buffered-ahead character if we have one.
5002 Yield number of decoded characters read.
5004 This function reads at most 4096 characters.
5005 If you want to read all available subprocess output,
5006 you must call it repeatedly until it returns zero.
5008 The characters read are decoded according to PROC's coding-system
5012 read_process_output (proc
, channel
)
5014 register int channel
;
5016 register int nbytes
;
5018 register Lisp_Object outstream
;
5019 register struct buffer
*old
= current_buffer
;
5020 register struct Lisp_Process
*p
= XPROCESS (proc
);
5021 register int opoint
;
5022 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5023 int carryover
= p
->decoding_carryover
;
5027 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5029 vs
= get_vms_process_pointer (p
->pid
);
5033 return (0); /* Really weird if it does this */
5034 if (!(vs
->iosb
[0] & 1))
5035 return -1; /* I/O error */
5038 error ("Could not get VMS process pointer");
5039 chars
= vs
->inputBuffer
;
5040 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
5043 start_vms_process_read (vs
); /* Crank up the next read on the process */
5044 return 1; /* Nothing worth printing, say we got 1 */
5048 /* The data carried over in the previous decoding (which are at
5049 the tail of decoding buffer) should be prepended to the new
5050 data read to decode all together. */
5051 chars
= (char *) alloca (nbytes
+ carryover
);
5052 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
5053 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
5057 chars
= (char *) alloca (carryover
+ readmax
);
5059 /* See the comment above. */
5060 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5062 #ifdef DATAGRAM_SOCKETS
5063 /* We have a working select, so proc_buffered_char is always -1. */
5064 if (DATAGRAM_CHAN_P (channel
))
5066 int len
= datagram_address
[channel
].len
;
5067 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5068 0, datagram_address
[channel
].sa
, &len
);
5072 if (proc_buffered_char
[channel
] < 0)
5074 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5075 #ifdef ADAPTIVE_READ_BUFFERING
5076 if (nbytes
> 0 && p
->adaptive_read_buffering
)
5078 int delay
= p
->read_output_delay
;
5081 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5084 process_output_delay_count
++;
5085 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5088 else if (delay
> 0 && (nbytes
== readmax
))
5090 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5092 process_output_delay_count
--;
5094 p
->read_output_delay
= delay
;
5097 p
->read_output_skip
= 1;
5098 process_output_skip
= 1;
5105 chars
[carryover
] = proc_buffered_char
[channel
];
5106 proc_buffered_char
[channel
] = -1;
5107 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5111 nbytes
= nbytes
+ 1;
5113 #endif /* not VMS */
5115 p
->decoding_carryover
= 0;
5117 /* At this point, NBYTES holds number of bytes just received
5118 (including the one in proc_buffered_char[channel]). */
5121 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5123 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5126 /* Now set NBYTES how many bytes we must decode. */
5127 nbytes
+= carryover
;
5129 /* Read and dispose of the process output. */
5130 outstream
= p
->filter
;
5131 if (!NILP (outstream
))
5133 /* We inhibit quit here instead of just catching it so that
5134 hitting ^G when a filter happens to be running won't screw
5136 int count
= SPECPDL_INDEX ();
5137 Lisp_Object odeactivate
;
5138 Lisp_Object obuffer
, okeymap
;
5140 int outer_running_asynch_code
= running_asynch_code
;
5141 int waiting
= waiting_for_user_input_p
;
5143 /* No need to gcpro these, because all we do with them later
5144 is test them for EQness, and none of them should be a string. */
5145 odeactivate
= Vdeactivate_mark
;
5146 XSETBUFFER (obuffer
, current_buffer
);
5147 okeymap
= current_buffer
->keymap
;
5149 specbind (Qinhibit_quit
, Qt
);
5150 specbind (Qlast_nonmenu_event
, Qt
);
5152 /* In case we get recursively called,
5153 and we already saved the match data nonrecursively,
5154 save the same match data in safely recursive fashion. */
5155 if (outer_running_asynch_code
)
5158 /* Don't clobber the CURRENT match data, either! */
5159 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5160 restore_search_regs ();
5161 record_unwind_save_match_data ();
5162 Fset_match_data (tem
, Qt
);
5165 /* For speed, if a search happens within this code,
5166 save the match data in a special nonrecursive fashion. */
5167 running_asynch_code
= 1;
5169 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5171 Vlast_coding_system_used
= coding
->symbol
;
5172 /* A new coding system might be found. */
5173 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5175 p
->decode_coding_system
= coding
->symbol
;
5177 /* Don't call setup_coding_system for
5178 proc_decode_coding_system[channel] here. It is done in
5179 detect_coding called via decode_coding above. */
5181 /* If a coding system for encoding is not yet decided, we set
5182 it as the same as coding-system for decoding.
5184 But, before doing that we must check if
5185 proc_encode_coding_system[p->outfd] surely points to a
5186 valid memory because p->outfd will be changed once EOF is
5187 sent to the process. */
5188 if (NILP (p
->encode_coding_system
)
5189 && proc_encode_coding_system
[p
->outfd
])
5191 p
->encode_coding_system
= coding
->symbol
;
5192 setup_coding_system (coding
->symbol
,
5193 proc_encode_coding_system
[p
->outfd
]);
5194 if (proc_encode_coding_system
[p
->outfd
]->eol_type
5195 == CODING_EOL_UNDECIDED
)
5196 proc_encode_coding_system
[p
->outfd
]->eol_type
5201 carryover
= nbytes
- coding
->consumed
;
5205 if (SCHARS (p
->decoding_buf
) < carryover
)
5206 p
->decoding_buf
= make_uninit_string (carryover
);
5207 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5209 p
->decoding_carryover
= carryover
;
5210 /* Adjust the multibyteness of TEXT to that of the filter. */
5211 if (!p
->filter_multibyte
!= !STRING_MULTIBYTE (text
))
5212 text
= (STRING_MULTIBYTE (text
)
5213 ? Fstring_as_unibyte (text
)
5214 : Fstring_to_multibyte (text
));
5215 if (SBYTES (text
) > 0)
5216 internal_condition_case_1 (read_process_output_call
,
5218 Fcons (proc
, Fcons (text
, Qnil
))),
5219 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5220 read_process_output_error_handler
);
5222 /* If we saved the match data nonrecursively, restore it now. */
5223 restore_search_regs ();
5224 running_asynch_code
= outer_running_asynch_code
;
5226 /* Handling the process output should not deactivate the mark. */
5227 Vdeactivate_mark
= odeactivate
;
5229 /* Restore waiting_for_user_input_p as it was
5230 when we were called, in case the filter clobbered it. */
5231 waiting_for_user_input_p
= waiting
;
5233 #if 0 /* Call record_asynch_buffer_change unconditionally,
5234 because we might have changed minor modes or other things
5235 that affect key bindings. */
5236 if (! EQ (Fcurrent_buffer (), obuffer
)
5237 || ! EQ (current_buffer
->keymap
, okeymap
))
5239 /* But do it only if the caller is actually going to read events.
5240 Otherwise there's no need to make him wake up, and it could
5241 cause trouble (for example it would make sit_for return). */
5242 if (waiting_for_user_input_p
== -1)
5243 record_asynch_buffer_change ();
5246 start_vms_process_read (vs
);
5248 unbind_to (count
, Qnil
);
5252 /* If no filter, write into buffer if it isn't dead. */
5253 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5255 Lisp_Object old_read_only
;
5256 int old_begv
, old_zv
;
5257 int old_begv_byte
, old_zv_byte
;
5258 Lisp_Object odeactivate
;
5259 int before
, before_byte
;
5264 odeactivate
= Vdeactivate_mark
;
5266 Fset_buffer (p
->buffer
);
5268 opoint_byte
= PT_BYTE
;
5269 old_read_only
= current_buffer
->read_only
;
5272 old_begv_byte
= BEGV_BYTE
;
5273 old_zv_byte
= ZV_BYTE
;
5275 current_buffer
->read_only
= Qnil
;
5277 /* Insert new output into buffer
5278 at the current end-of-output marker,
5279 thus preserving logical ordering of input and output. */
5280 if (XMARKER (p
->mark
)->buffer
)
5281 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5282 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5285 SET_PT_BOTH (ZV
, ZV_BYTE
);
5287 before_byte
= PT_BYTE
;
5289 /* If the output marker is outside of the visible region, save
5290 the restriction and widen. */
5291 if (! (BEGV
<= PT
&& PT
<= ZV
))
5294 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5296 Vlast_coding_system_used
= coding
->symbol
;
5297 /* A new coding system might be found. See the comment in the
5298 similar code in the previous `if' block. */
5299 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5301 p
->decode_coding_system
= coding
->symbol
;
5302 if (NILP (p
->encode_coding_system
)
5303 && proc_encode_coding_system
[p
->outfd
])
5305 p
->encode_coding_system
= coding
->symbol
;
5306 setup_coding_system (coding
->symbol
,
5307 proc_encode_coding_system
[p
->outfd
]);
5308 if (proc_encode_coding_system
[p
->outfd
]->eol_type
5309 == CODING_EOL_UNDECIDED
)
5310 proc_encode_coding_system
[p
->outfd
]->eol_type
5314 carryover
= nbytes
- coding
->consumed
;
5318 if (SCHARS (p
->decoding_buf
) < carryover
)
5319 p
->decoding_buf
= make_uninit_string (carryover
);
5320 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5322 p
->decoding_carryover
= carryover
;
5324 /* Adjust the multibyteness of TEXT to that of the buffer. */
5325 if (NILP (current_buffer
->enable_multibyte_characters
)
5326 != ! STRING_MULTIBYTE (text
))
5327 text
= (STRING_MULTIBYTE (text
)
5328 ? Fstring_as_unibyte (text
)
5329 : Fstring_to_multibyte (text
));
5330 /* Insert before markers in case we are inserting where
5331 the buffer's mark is, and the user's next command is Meta-y. */
5332 insert_from_string_before_markers (text
, 0, 0,
5333 SCHARS (text
), SBYTES (text
), 0);
5335 /* Make sure the process marker's position is valid when the
5336 process buffer is changed in the signal_after_change above.
5337 W3 is known to do that. */
5338 if (BUFFERP (p
->buffer
)
5339 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5340 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5342 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5344 update_mode_lines
++;
5346 /* Make sure opoint and the old restrictions
5347 float ahead of any new text just as point would. */
5348 if (opoint
>= before
)
5350 opoint
+= PT
- before
;
5351 opoint_byte
+= PT_BYTE
- before_byte
;
5353 if (old_begv
> before
)
5355 old_begv
+= PT
- before
;
5356 old_begv_byte
+= PT_BYTE
- before_byte
;
5358 if (old_zv
>= before
)
5360 old_zv
+= PT
- before
;
5361 old_zv_byte
+= PT_BYTE
- before_byte
;
5364 /* If the restriction isn't what it should be, set it. */
5365 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5366 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5368 /* Handling the process output should not deactivate the mark. */
5369 Vdeactivate_mark
= odeactivate
;
5371 current_buffer
->read_only
= old_read_only
;
5372 SET_PT_BOTH (opoint
, opoint_byte
);
5373 set_buffer_internal (old
);
5376 start_vms_process_read (vs
);
5381 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5383 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5384 This is intended for use by asynchronous process output filters and sentinels. */)
5387 return (waiting_for_user_input_p
? Qt
: Qnil
);
5390 /* Sending data to subprocess */
5392 jmp_buf send_process_frame
;
5393 Lisp_Object process_sent_to
;
5396 send_process_trap ()
5398 SIGNAL_THREAD_CHECK (SIGPIPE
);
5403 sigunblock (sigmask (SIGPIPE
));
5404 longjmp (send_process_frame
, 1);
5407 /* Send some data to process PROC.
5408 BUF is the beginning of the data; LEN is the number of characters.
5409 OBJECT is the Lisp object that the data comes from. If OBJECT is
5410 nil or t, it means that the data comes from C string.
5412 If OBJECT is not nil, the data is encoded by PROC's coding-system
5413 for encoding before it is sent.
5415 This function can evaluate Lisp code and can garbage collect. */
5418 send_process (proc
, buf
, len
, object
)
5419 volatile Lisp_Object proc
;
5420 unsigned char *volatile buf
;
5422 volatile Lisp_Object object
;
5424 /* Use volatile to protect variables from being clobbered by longjmp. */
5425 struct Lisp_Process
*p
= XPROCESS (proc
);
5427 struct coding_system
*coding
;
5428 struct gcpro gcpro1
;
5429 SIGTYPE (*volatile old_sigpipe
) ();
5434 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5437 if (p
->raw_status_new
)
5439 if (! EQ (p
->status
, Qrun
))
5440 error ("Process %s not running", SDATA (p
->name
));
5442 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5444 coding
= proc_encode_coding_system
[p
->outfd
];
5445 Vlast_coding_system_used
= coding
->symbol
;
5447 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5448 || (BUFFERP (object
)
5449 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5452 if (!EQ (coding
->symbol
, p
->encode_coding_system
))
5453 /* The coding system for encoding was changed to raw-text
5454 because we sent a unibyte text previously. Now we are
5455 sending a multibyte text, thus we must encode it by the
5456 original coding system specified for the current process. */
5457 setup_coding_system (p
->encode_coding_system
, coding
);
5458 if (coding
->eol_type
== CODING_EOL_UNDECIDED
)
5459 coding
->eol_type
= system_eol_type
;
5460 /* src_multibyte should be set to 1 _after_ a call to
5461 setup_coding_system, since it resets src_multibyte to
5463 coding
->src_multibyte
= 1;
5467 /* For sending a unibyte text, character code conversion should
5468 not take place but EOL conversion should. So, setup raw-text
5469 or one of the subsidiary if we have not yet done it. */
5470 if (coding
->type
!= coding_type_raw_text
)
5472 if (CODING_REQUIRE_FLUSHING (coding
))
5474 /* But, before changing the coding, we must flush out data. */
5475 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5476 send_process (proc
, "", 0, Qt
);
5478 coding
->src_multibyte
= 0;
5479 setup_raw_text_coding_system (coding
);
5482 coding
->dst_multibyte
= 0;
5484 if (CODING_REQUIRE_ENCODING (coding
))
5486 int require
= encoding_buffer_size (coding
, len
);
5487 int from_byte
= -1, from
= -1, to
= -1;
5489 if (BUFFERP (object
))
5491 from_byte
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5492 from
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
);
5493 to
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
+ len
);
5495 else if (STRINGP (object
))
5497 from_byte
= buf
- SDATA (object
);
5498 from
= string_byte_to_char (object
, from_byte
);
5499 to
= string_byte_to_char (object
, from_byte
+ len
);
5502 if (coding
->composing
!= COMPOSITION_DISABLED
)
5505 coding_save_composition (coding
, from
, to
, object
);
5507 coding
->composing
= COMPOSITION_DISABLED
;
5510 if (SBYTES (p
->encoding_buf
) < require
)
5511 p
->encoding_buf
= make_uninit_string (require
);
5514 buf
= (BUFFERP (object
)
5515 ? BUF_BYTE_ADDRESS (XBUFFER (object
), from_byte
)
5516 : SDATA (object
) + from_byte
);
5518 object
= p
->encoding_buf
;
5519 encode_coding (coding
, (char *) buf
, SDATA (object
),
5520 len
, SBYTES (object
));
5521 coding_free_composition_data (coding
);
5522 len
= coding
->produced
;
5523 buf
= SDATA (object
);
5527 vs
= get_vms_process_pointer (p
->pid
);
5529 error ("Could not find this process: %x", p
->pid
);
5530 else if (write_to_vms_process (vs
, buf
, len
))
5534 if (pty_max_bytes
== 0)
5536 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5537 pty_max_bytes
= fpathconf (p
->outfd
, _PC_MAX_CANON
);
5538 if (pty_max_bytes
< 0)
5539 pty_max_bytes
= 250;
5541 pty_max_bytes
= 250;
5543 /* Deduct one, to leave space for the eof. */
5547 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5548 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5549 when returning with longjmp despite being declared volatile. */
5550 if (!setjmp (send_process_frame
))
5552 process_sent_to
= proc
;
5557 /* Decide how much data we can send in one batch.
5558 Long lines need to be split into multiple batches. */
5561 /* Starting this at zero is always correct when not the first
5562 iteration because the previous iteration ended by sending C-d.
5563 It may not be correct for the first iteration
5564 if a partial line was sent in a separate send_process call.
5565 If that proves worth handling, we need to save linepos
5566 in the process object. */
5568 unsigned char *ptr
= (unsigned char *) buf
;
5569 unsigned char *end
= (unsigned char *) buf
+ len
;
5571 /* Scan through this text for a line that is too long. */
5572 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5580 /* If we found one, break the line there
5581 and put in a C-d to force the buffer through. */
5585 /* Send this batch, using one or more write calls. */
5588 int outfd
= p
->outfd
;
5589 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5590 #ifdef DATAGRAM_SOCKETS
5591 if (DATAGRAM_CHAN_P (outfd
))
5593 rv
= sendto (outfd
, (char *) buf
, this,
5594 0, datagram_address
[outfd
].sa
,
5595 datagram_address
[outfd
].len
);
5596 if (rv
< 0 && errno
== EMSGSIZE
)
5598 signal (SIGPIPE
, old_sigpipe
);
5599 report_file_error ("sending datagram",
5600 Fcons (proc
, Qnil
));
5606 rv
= emacs_write (outfd
, (char *) buf
, this);
5607 #ifdef ADAPTIVE_READ_BUFFERING
5608 if (p
->read_output_delay
> 0
5609 && p
->adaptive_read_buffering
== 1)
5611 p
->read_output_delay
= 0;
5612 process_output_delay_count
--;
5613 p
->read_output_skip
= 0;
5617 signal (SIGPIPE
, old_sigpipe
);
5623 || errno
== EWOULDBLOCK
5629 /* Buffer is full. Wait, accepting input;
5630 that may allow the program
5631 to finish doing output and read more. */
5635 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5636 /* A gross hack to work around a bug in FreeBSD.
5637 In the following sequence, read(2) returns
5641 write(2) 954 bytes, get EAGAIN
5642 read(2) 1024 bytes in process_read_output
5643 read(2) 11 bytes in process_read_output
5645 That is, read(2) returns more bytes than have
5646 ever been written successfully. The 1033 bytes
5647 read are the 1022 bytes written successfully
5648 after processing (for example with CRs added if
5649 the terminal is set up that way which it is
5650 here). The same bytes will be seen again in a
5651 later read(2), without the CRs. */
5653 if (errno
== EAGAIN
)
5656 ioctl (p
->outfd
, TIOCFLUSH
, &flags
);
5658 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5660 /* Running filters might relocate buffers or strings.
5661 Arrange to relocate BUF. */
5662 if (BUFFERP (object
))
5663 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5664 else if (STRINGP (object
))
5665 offset
= buf
- SDATA (object
);
5667 #ifdef EMACS_HAS_USECS
5668 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5670 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5673 if (BUFFERP (object
))
5674 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5675 else if (STRINGP (object
))
5676 buf
= offset
+ SDATA (object
);
5681 /* This is a real error. */
5682 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5689 /* If we sent just part of the string, put in an EOF
5690 to force it through, before we send the rest. */
5692 Fprocess_send_eof (proc
);
5695 #endif /* not VMS */
5698 signal (SIGPIPE
, old_sigpipe
);
5700 proc
= process_sent_to
;
5701 p
= XPROCESS (proc
);
5703 p
->raw_status_new
= 0;
5704 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5705 p
->tick
= ++process_tick
;
5706 deactivate_process (proc
);
5708 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5710 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5718 send_process_object_unwind (buf
)
5723 if (XBUFFER (buf
) == current_buffer
)
5725 tembuf
= Fcurrent_buffer ();
5727 Fkill_buffer (tembuf
);
5731 /* Send current contents of region between START and END to PROC.
5732 If START is a string, send it instead.
5733 This function can evaluate Lisp code and can garbage collect. */
5736 send_process_object (proc
, start
, end
)
5737 Lisp_Object proc
, start
, end
;
5739 int count
= SPECPDL_INDEX ();
5740 Lisp_Object object
= STRINGP (start
) ? start
: Fcurrent_buffer ();
5741 struct buffer
*given_buffer
= current_buffer
;
5745 record_unwind_protect (send_process_object_unwind
, Fcurrent_buffer ());
5747 if (STRINGP (object
) ? STRING_MULTIBYTE (object
)
5748 : ! NILP (XBUFFER (object
)->enable_multibyte_characters
))
5750 struct Lisp_Process
*p
= XPROCESS (proc
);
5751 struct coding_system
*coding
;
5753 if (p
->raw_status_new
)
5755 if (! EQ (p
->status
, Qrun
))
5756 error ("Process %s not running", SDATA (p
->name
));
5758 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5760 coding
= proc_encode_coding_system
[p
->outfd
];
5761 if (! EQ (coding
->symbol
, p
->encode_coding_system
))
5762 /* The coding system for encoding was changed to raw-text
5763 because we sent a unibyte text previously. Now we are
5764 sending a multibyte text, thus we must encode it by the
5765 original coding system specified for the current process. */
5766 setup_coding_system (p
->encode_coding_system
, coding
);
5767 if (! NILP (coding
->pre_write_conversion
))
5769 struct gcpro gcpro1
, gcpro2
;
5771 GCPRO2 (proc
, object
);
5772 call2 (coding
->pre_write_conversion
, start
, end
);
5774 if (given_buffer
!= current_buffer
)
5776 start
= make_number (BEGV
), end
= make_number (ZV
);
5777 object
= Fcurrent_buffer ();
5782 if (BUFFERP (object
))
5784 EMACS_INT start_byte
;
5786 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5787 move_gap (XINT (end
));
5788 start_byte
= CHAR_TO_BYTE (XINT (start
));
5789 buf
= BYTE_POS_ADDR (start_byte
);
5790 len
= CHAR_TO_BYTE (XINT (end
)) - start_byte
;
5794 buf
= SDATA (object
);
5795 len
= SBYTES (object
);
5797 send_process (proc
, buf
, len
, object
);
5799 unbind_to (count
, Qnil
);
5802 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5804 doc
: /* Send current contents of region as input to PROCESS.
5805 PROCESS may be a process, a buffer, the name of a process or buffer, or
5806 nil, indicating the current buffer's process.
5807 Called from program, takes three arguments, PROCESS, START and END.
5808 If the region is more than 500 characters long,
5809 it is sent in several bunches. This may happen even for shorter regions.
5810 Output from processes can arrive in between bunches. */)
5811 (process
, start
, end
)
5812 Lisp_Object process
, start
, end
;
5816 proc
= get_process (process
);
5817 validate_region (&start
, &end
);
5818 send_process_object (proc
, start
, end
);
5822 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5824 doc
: /* Send PROCESS the contents of STRING as input.
5825 PROCESS may be a process, a buffer, the name of a process or buffer, or
5826 nil, indicating the current buffer's process.
5827 If STRING is more than 500 characters long,
5828 it is sent in several bunches. This may happen even for shorter strings.
5829 Output from processes can arrive in between bunches. */)
5831 Lisp_Object process
, string
;
5834 CHECK_STRING (string
);
5835 proc
= get_process (process
);
5836 send_process_object (proc
, string
, Qnil
);
5840 /* Return the foreground process group for the tty/pty that
5841 the process P uses. */
5843 emacs_get_tty_pgrp (p
)
5844 struct Lisp_Process
*p
;
5849 if (ioctl (p
->infd
, TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5852 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5853 master side. Try the slave side. */
5854 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5858 ioctl (fd
, TIOCGPGRP
, &gid
);
5862 #endif /* defined (TIOCGPGRP ) */
5867 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5868 Sprocess_running_child_p
, 0, 1, 0,
5869 doc
: /* Return t if PROCESS has given the terminal to a child.
5870 If the operating system does not make it possible to find out,
5871 return t unconditionally. */)
5873 Lisp_Object process
;
5875 /* Initialize in case ioctl doesn't exist or gives an error,
5876 in a way that will cause returning t. */
5879 struct Lisp_Process
*p
;
5881 proc
= get_process (process
);
5882 p
= XPROCESS (proc
);
5884 if (!EQ (p
->childp
, Qt
))
5885 error ("Process %s is not a subprocess",
5888 error ("Process %s is not active",
5891 gid
= emacs_get_tty_pgrp (p
);
5898 /* send a signal number SIGNO to PROCESS.
5899 If CURRENT_GROUP is t, that means send to the process group
5900 that currently owns the terminal being used to communicate with PROCESS.
5901 This is used for various commands in shell mode.
5902 If CURRENT_GROUP is lambda, that means send to the process group
5903 that currently owns the terminal, but only if it is NOT the shell itself.
5905 If NOMSG is zero, insert signal-announcements into process's buffers
5908 If we can, we try to signal PROCESS by sending control characters
5909 down the pty. This allows us to signal inferiors who have changed
5910 their uid, for which killpg would return an EPERM error. */
5913 process_send_signal (process
, signo
, current_group
, nomsg
)
5914 Lisp_Object process
;
5916 Lisp_Object current_group
;
5920 register struct Lisp_Process
*p
;
5924 proc
= get_process (process
);
5925 p
= XPROCESS (proc
);
5927 if (!EQ (p
->childp
, Qt
))
5928 error ("Process %s is not a subprocess",
5931 error ("Process %s is not active",
5935 current_group
= Qnil
;
5937 /* If we are using pgrps, get a pgrp number and make it negative. */
5938 if (NILP (current_group
))
5939 /* Send the signal to the shell's process group. */
5943 #ifdef SIGNALS_VIA_CHARACTERS
5944 /* If possible, send signals to the entire pgrp
5945 by sending an input character to it. */
5947 /* TERMIOS is the latest and bestest, and seems most likely to
5948 work. If the system has it, use it. */
5951 cc_t
*sig_char
= NULL
;
5953 tcgetattr (p
->infd
, &t
);
5958 sig_char
= &t
.c_cc
[VINTR
];
5962 sig_char
= &t
.c_cc
[VQUIT
];
5966 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5967 sig_char
= &t
.c_cc
[VSWTCH
];
5969 sig_char
= &t
.c_cc
[VSUSP
];
5974 if (sig_char
&& *sig_char
!= CDISABLE
)
5976 send_process (proc
, sig_char
, 1, Qnil
);
5979 /* If we can't send the signal with a character,
5980 fall through and send it another way. */
5981 #else /* ! HAVE_TERMIOS */
5983 /* On Berkeley descendants, the following IOCTL's retrieve the
5984 current control characters. */
5985 #if defined (TIOCGLTC) && defined (TIOCGETC)
5993 ioctl (p
->infd
, TIOCGETC
, &c
);
5994 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5997 ioctl (p
->infd
, TIOCGETC
, &c
);
5998 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
6002 ioctl (p
->infd
, TIOCGLTC
, &lc
);
6003 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
6005 #endif /* ! defined (SIGTSTP) */
6008 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6010 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
6017 ioctl (p
->infd
, TCGETA
, &t
);
6018 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
6021 ioctl (p
->infd
, TCGETA
, &t
);
6022 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6026 ioctl (p
->infd
, TCGETA
, &t
);
6027 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6029 #endif /* ! defined (SIGTSTP) */
6031 #else /* ! defined (TCGETA) */
6032 Your configuration files are messed up
.
6033 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6034 you'd better be using one of the alternatives above! */
6035 #endif /* ! defined (TCGETA) */
6036 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6037 /* In this case, the code above should alway returns. */
6039 #endif /* ! defined HAVE_TERMIOS */
6041 /* The code above may fall through if it can't
6042 handle the signal. */
6043 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6046 /* Get the current pgrp using the tty itself, if we have that.
6047 Otherwise, use the pty to get the pgrp.
6048 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6049 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6050 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6051 His patch indicates that if TIOCGPGRP returns an error, then
6052 we should just assume that p->pid is also the process group id. */
6054 gid
= emacs_get_tty_pgrp (p
);
6057 /* If we can't get the information, assume
6058 the shell owns the tty. */
6061 /* It is not clear whether anything really can set GID to -1.
6062 Perhaps on some system one of those ioctls can or could do so.
6063 Or perhaps this is vestigial. */
6066 #else /* ! defined (TIOCGPGRP ) */
6067 /* Can't select pgrps on this system, so we know that
6068 the child itself heads the pgrp. */
6070 #endif /* ! defined (TIOCGPGRP ) */
6072 /* If current_group is lambda, and the shell owns the terminal,
6073 don't send any signal. */
6074 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6082 p
->raw_status_new
= 0;
6084 p
->tick
= ++process_tick
;
6086 status_notify (NULL
);
6088 #endif /* ! defined (SIGCONT) */
6091 send_process (proc
, "\003", 1, Qnil
); /* ^C */
6096 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
6101 sys$
forcex (&(p
->pid
), 0, 1);
6104 flush_pending_output (p
->infd
);
6108 /* If we don't have process groups, send the signal to the immediate
6109 subprocess. That isn't really right, but it's better than any
6110 obvious alternative. */
6113 kill (p
->pid
, signo
);
6117 /* gid may be a pid, or minus a pgrp's number */
6119 if (!NILP (current_group
))
6121 if (ioctl (p
->infd
, TIOCSIGSEND
, signo
) == -1)
6122 EMACS_KILLPG (gid
, signo
);
6129 #else /* ! defined (TIOCSIGSEND) */
6130 EMACS_KILLPG (gid
, signo
);
6131 #endif /* ! defined (TIOCSIGSEND) */
6134 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6135 doc
: /* Interrupt process PROCESS.
6136 PROCESS may be a process, a buffer, or the name of a process or buffer.
6137 No arg or nil means current buffer's process.
6138 Second arg CURRENT-GROUP non-nil means send signal to
6139 the current process-group of the process's controlling terminal
6140 rather than to the process's own process group.
6141 If the process is a shell, this means interrupt current subjob
6142 rather than the shell.
6144 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6145 don't send the signal. */)
6146 (process
, current_group
)
6147 Lisp_Object process
, current_group
;
6149 process_send_signal (process
, SIGINT
, current_group
, 0);
6153 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6154 doc
: /* Kill process PROCESS. May be process or name of one.
6155 See function `interrupt-process' for more details on usage. */)
6156 (process
, current_group
)
6157 Lisp_Object process
, current_group
;
6159 process_send_signal (process
, SIGKILL
, current_group
, 0);
6163 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6164 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6165 See function `interrupt-process' for more details on usage. */)
6166 (process
, current_group
)
6167 Lisp_Object process
, current_group
;
6169 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6173 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6174 doc
: /* Stop process PROCESS. May be process or name of one.
6175 See function `interrupt-process' for more details on usage.
6176 If PROCESS is a network process, inhibit handling of incoming traffic. */)
6177 (process
, current_group
)
6178 Lisp_Object process
, current_group
;
6181 if (PROCESSP (process
) && NETCONN_P (process
))
6183 struct Lisp_Process
*p
;
6185 p
= XPROCESS (process
);
6186 if (NILP (p
->command
)
6189 FD_CLR (p
->infd
, &input_wait_mask
);
6190 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6197 error ("No SIGTSTP support");
6199 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6204 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6205 doc
: /* Continue process PROCESS. May be process or name of one.
6206 See function `interrupt-process' for more details on usage.
6207 If PROCESS is a network process, resume handling of incoming traffic. */)
6208 (process
, current_group
)
6209 Lisp_Object process
, current_group
;
6212 if (PROCESSP (process
) && NETCONN_P (process
))
6214 struct Lisp_Process
*p
;
6216 p
= XPROCESS (process
);
6217 if (EQ (p
->command
, Qt
)
6219 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6221 FD_SET (p
->infd
, &input_wait_mask
);
6222 FD_SET (p
->infd
, &non_keyboard_wait_mask
);
6229 process_send_signal (process
, SIGCONT
, current_group
, 0);
6231 error ("No SIGCONT support");
6236 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6237 2, 2, "sProcess (name or number): \nnSignal code: ",
6238 doc
: /* Send PROCESS the signal with code SIGCODE.
6239 PROCESS may also be a number specifying the process id of the
6240 process to signal; in this case, the process need not be a child of
6242 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6244 Lisp_Object process
, sigcode
;
6248 if (INTEGERP (process
))
6250 pid
= XINT (process
);
6254 if (FLOATP (process
))
6256 pid
= (pid_t
) XFLOAT_DATA (process
);
6260 if (STRINGP (process
))
6263 if (tem
= Fget_process (process
), NILP (tem
))
6265 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6272 process
= get_process (process
);
6277 CHECK_PROCESS (process
);
6278 pid
= XPROCESS (process
)->pid
;
6280 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6284 #define parse_signal(NAME, VALUE) \
6285 else if (!xstricmp (name, NAME)) \
6286 XSETINT (sigcode, VALUE)
6288 if (INTEGERP (sigcode
))
6292 unsigned char *name
;
6294 CHECK_SYMBOL (sigcode
);
6295 name
= SDATA (SYMBOL_NAME (sigcode
));
6297 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6303 parse_signal ("usr1", SIGUSR1
);
6306 parse_signal ("usr2", SIGUSR2
);
6309 parse_signal ("term", SIGTERM
);
6312 parse_signal ("hup", SIGHUP
);
6315 parse_signal ("int", SIGINT
);
6318 parse_signal ("quit", SIGQUIT
);
6321 parse_signal ("ill", SIGILL
);
6324 parse_signal ("abrt", SIGABRT
);
6327 parse_signal ("emt", SIGEMT
);
6330 parse_signal ("kill", SIGKILL
);
6333 parse_signal ("fpe", SIGFPE
);
6336 parse_signal ("bus", SIGBUS
);
6339 parse_signal ("segv", SIGSEGV
);
6342 parse_signal ("sys", SIGSYS
);
6345 parse_signal ("pipe", SIGPIPE
);
6348 parse_signal ("alrm", SIGALRM
);
6351 parse_signal ("urg", SIGURG
);
6354 parse_signal ("stop", SIGSTOP
);
6357 parse_signal ("tstp", SIGTSTP
);
6360 parse_signal ("cont", SIGCONT
);
6363 parse_signal ("chld", SIGCHLD
);
6366 parse_signal ("ttin", SIGTTIN
);
6369 parse_signal ("ttou", SIGTTOU
);
6372 parse_signal ("io", SIGIO
);
6375 parse_signal ("xcpu", SIGXCPU
);
6378 parse_signal ("xfsz", SIGXFSZ
);
6381 parse_signal ("vtalrm", SIGVTALRM
);
6384 parse_signal ("prof", SIGPROF
);
6387 parse_signal ("winch", SIGWINCH
);
6390 parse_signal ("info", SIGINFO
);
6393 error ("Undefined signal name %s", name
);
6398 return make_number (kill (pid
, XINT (sigcode
)));
6401 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6402 doc
: /* Make PROCESS see end-of-file in its input.
6403 EOF comes after any text already sent to it.
6404 PROCESS may be a process, a buffer, the name of a process or buffer, or
6405 nil, indicating the current buffer's process.
6406 If PROCESS is a network connection, or is a process communicating
6407 through a pipe (as opposed to a pty), then you cannot send any more
6408 text to PROCESS after you call this function. */)
6410 Lisp_Object process
;
6413 struct coding_system
*coding
;
6415 if (DATAGRAM_CONN_P (process
))
6418 proc
= get_process (process
);
6419 coding
= proc_encode_coding_system
[XPROCESS (proc
)->outfd
];
6421 /* Make sure the process is really alive. */
6422 if (XPROCESS (proc
)->raw_status_new
)
6423 update_status (XPROCESS (proc
));
6424 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6425 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6427 if (CODING_REQUIRE_FLUSHING (coding
))
6429 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6430 send_process (proc
, "", 0, Qnil
);
6434 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6436 if (XPROCESS (proc
)->pty_flag
)
6437 send_process (proc
, "\004", 1, Qnil
);
6440 int old_outfd
, new_outfd
;
6442 #ifdef HAVE_SHUTDOWN
6443 /* If this is a network connection, or socketpair is used
6444 for communication with the subprocess, call shutdown to cause EOF.
6445 (In some old system, shutdown to socketpair doesn't work.
6446 Then we just can't win.) */
6447 if (XPROCESS (proc
)->pid
== 0
6448 || XPROCESS (proc
)->outfd
== XPROCESS (proc
)->infd
)
6449 shutdown (XPROCESS (proc
)->outfd
, 1);
6450 /* In case of socketpair, outfd == infd, so don't close it. */
6451 if (XPROCESS (proc
)->outfd
!= XPROCESS (proc
)->infd
)
6452 emacs_close (XPROCESS (proc
)->outfd
);
6453 #else /* not HAVE_SHUTDOWN */
6454 emacs_close (XPROCESS (proc
)->outfd
);
6455 #endif /* not HAVE_SHUTDOWN */
6456 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6459 old_outfd
= XPROCESS (proc
)->outfd
;
6461 if (!proc_encode_coding_system
[new_outfd
])
6462 proc_encode_coding_system
[new_outfd
]
6463 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6464 bcopy (proc_encode_coding_system
[old_outfd
],
6465 proc_encode_coding_system
[new_outfd
],
6466 sizeof (struct coding_system
));
6467 bzero (proc_encode_coding_system
[old_outfd
],
6468 sizeof (struct coding_system
));
6470 XPROCESS (proc
)->outfd
= new_outfd
;
6476 /* Kill all processes associated with `buffer'.
6477 If `buffer' is nil, kill all processes */
6480 kill_buffer_processes (buffer
)
6483 Lisp_Object tail
, proc
;
6485 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6487 proc
= XCDR (XCAR (tail
));
6488 if (GC_PROCESSP (proc
)
6489 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6491 if (NETCONN_P (proc
))
6492 Fdelete_process (proc
);
6493 else if (XPROCESS (proc
)->infd
>= 0)
6494 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6499 /* On receipt of a signal that a child status has changed, loop asking
6500 about children with changed statuses until the system says there
6503 All we do is change the status; we do not run sentinels or print
6504 notifications. That is saved for the next time keyboard input is
6505 done, in order to avoid timing errors.
6507 ** WARNING: this can be called during garbage collection.
6508 Therefore, it must not be fooled by the presence of mark bits in
6511 ** USG WARNING: Although it is not obvious from the documentation
6512 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6513 signal() before executing at least one wait(), otherwise the
6514 handler will be called again, resulting in an infinite loop. The
6515 relevant portion of the documentation reads "SIGCLD signals will be
6516 queued and the signal-catching function will be continually
6517 reentered until the queue is empty". Invoking signal() causes the
6518 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6521 ** Malloc WARNING: This should never call malloc either directly or
6522 indirectly; if it does, that is a bug */
6526 sigchld_handler (signo
)
6529 int old_errno
= errno
;
6531 register struct Lisp_Process
*p
;
6532 extern EMACS_TIME
*input_available_clear_time
;
6534 SIGNAL_THREAD_CHECK (signo
);
6538 sigheld
|= sigbit (SIGCHLD
);
6550 #endif /* no WUNTRACED */
6551 /* Keep trying to get a status until we get a definitive result. */
6555 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6557 while (pid
< 0 && errno
== EINTR
);
6561 /* PID == 0 means no processes found, PID == -1 means a real
6562 failure. We have done all our job, so return. */
6564 /* USG systems forget handlers when they are used;
6565 must reestablish each time */
6566 #if defined (USG) && !defined (POSIX_SIGNALS)
6567 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6570 sigheld
&= ~sigbit (SIGCHLD
);
6578 #endif /* no WNOHANG */
6580 /* Find the process that signaled us, and record its status. */
6582 /* The process can have been deleted by Fdelete_process. */
6583 for (tail
= deleted_pid_list
; GC_CONSP (tail
); tail
= XCDR (tail
))
6585 Lisp_Object xpid
= XCAR (tail
);
6586 if ((GC_INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6587 || (GC_FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6589 XSETCAR (tail
, Qnil
);
6590 goto sigchld_end_of_loop
;
6594 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6596 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6598 proc
= XCDR (XCAR (tail
));
6599 p
= XPROCESS (proc
);
6600 if (GC_EQ (p
->childp
, Qt
) && p
->pid
== pid
)
6605 /* Look for an asynchronous process whose pid hasn't been filled
6608 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6610 proc
= XCDR (XCAR (tail
));
6611 p
= XPROCESS (proc
);
6617 /* Change the status of the process that was found. */
6620 union { int i
; WAITTYPE wt
; } u
;
6621 int clear_desc_flag
= 0;
6623 p
->tick
= ++process_tick
;
6625 p
->raw_status
= u
.i
;
6626 p
->raw_status_new
= 1;
6628 /* If process has terminated, stop waiting for its output. */
6629 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6631 clear_desc_flag
= 1;
6633 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6634 if (clear_desc_flag
)
6636 FD_CLR (p
->infd
, &input_wait_mask
);
6637 FD_CLR (p
->infd
, &non_keyboard_wait_mask
);
6640 /* Tell wait_reading_process_output that it needs to wake up and
6642 if (input_available_clear_time
)
6643 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6646 /* There was no asynchronous process found for that pid: we have
6647 a synchronous process. */
6650 synch_process_alive
= 0;
6652 /* Report the status of the synchronous process. */
6654 synch_process_retcode
= WRETCODE (w
);
6655 else if (WIFSIGNALED (w
))
6656 synch_process_termsig
= WTERMSIG (w
);
6658 /* Tell wait_reading_process_output that it needs to wake up and
6660 if (input_available_clear_time
)
6661 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6664 sigchld_end_of_loop
:
6667 /* On some systems, we must return right away.
6668 If any more processes want to signal us, we will
6670 Otherwise (on systems that have WNOHANG), loop around
6671 to use up all the processes that have something to tell us. */
6672 #if (defined WINDOWSNT \
6673 || (defined USG && !defined GNU_LINUX \
6674 && !(defined HPUX && defined WNOHANG)))
6675 #if defined (USG) && ! defined (POSIX_SIGNALS)
6676 signal (signo
, sigchld_handler
);
6680 #endif /* USG, but not HPUX with WNOHANG */
6683 #endif /* SIGCHLD */
6687 exec_sentinel_unwind (data
)
6690 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6695 exec_sentinel_error_handler (error
)
6698 cmd_error_internal (error
, "error in process sentinel: ");
6700 update_echo_area ();
6701 Fsleep_for (make_number (2), Qnil
);
6706 exec_sentinel (proc
, reason
)
6707 Lisp_Object proc
, reason
;
6709 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6710 register struct Lisp_Process
*p
= XPROCESS (proc
);
6711 int count
= SPECPDL_INDEX ();
6712 int outer_running_asynch_code
= running_asynch_code
;
6713 int waiting
= waiting_for_user_input_p
;
6715 if (inhibit_sentinels
)
6718 /* No need to gcpro these, because all we do with them later
6719 is test them for EQness, and none of them should be a string. */
6720 odeactivate
= Vdeactivate_mark
;
6721 XSETBUFFER (obuffer
, current_buffer
);
6722 okeymap
= current_buffer
->keymap
;
6724 sentinel
= p
->sentinel
;
6725 if (NILP (sentinel
))
6728 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6729 assure that it gets restored no matter how the sentinel exits. */
6731 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6732 /* Inhibit quit so that random quits don't screw up a running filter. */
6733 specbind (Qinhibit_quit
, Qt
);
6734 specbind (Qlast_nonmenu_event
, Qt
);
6736 /* In case we get recursively called,
6737 and we already saved the match data nonrecursively,
6738 save the same match data in safely recursive fashion. */
6739 if (outer_running_asynch_code
)
6742 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6743 restore_search_regs ();
6744 record_unwind_save_match_data ();
6745 Fset_match_data (tem
, Qt
);
6748 /* For speed, if a search happens within this code,
6749 save the match data in a special nonrecursive fashion. */
6750 running_asynch_code
= 1;
6752 internal_condition_case_1 (read_process_output_call
,
6754 Fcons (proc
, Fcons (reason
, Qnil
))),
6755 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6756 exec_sentinel_error_handler
);
6758 /* If we saved the match data nonrecursively, restore it now. */
6759 restore_search_regs ();
6760 running_asynch_code
= outer_running_asynch_code
;
6762 Vdeactivate_mark
= odeactivate
;
6764 /* Restore waiting_for_user_input_p as it was
6765 when we were called, in case the filter clobbered it. */
6766 waiting_for_user_input_p
= waiting
;
6769 if (! EQ (Fcurrent_buffer (), obuffer
)
6770 || ! EQ (current_buffer
->keymap
, okeymap
))
6772 /* But do it only if the caller is actually going to read events.
6773 Otherwise there's no need to make him wake up, and it could
6774 cause trouble (for example it would make sit_for return). */
6775 if (waiting_for_user_input_p
== -1)
6776 record_asynch_buffer_change ();
6778 unbind_to (count
, Qnil
);
6781 /* Report all recent events of a change in process status
6782 (either run the sentinel or output a message).
6783 This is usually done while Emacs is waiting for keyboard input
6784 but can be done at other times. */
6787 status_notify (deleting_process
)
6788 struct Lisp_Process
*deleting_process
;
6790 register Lisp_Object proc
, buffer
;
6791 Lisp_Object tail
, msg
;
6792 struct gcpro gcpro1
, gcpro2
;
6796 /* We need to gcpro tail; if read_process_output calls a filter
6797 which deletes a process and removes the cons to which tail points
6798 from Vprocess_alist, and then causes a GC, tail is an unprotected
6802 /* Set this now, so that if new processes are created by sentinels
6803 that we run, we get called again to handle their status changes. */
6804 update_tick
= process_tick
;
6806 for (tail
= Vprocess_alist
; CONSP (tail
); tail
= XCDR (tail
))
6809 register struct Lisp_Process
*p
;
6811 proc
= Fcdr (XCAR (tail
));
6812 p
= XPROCESS (proc
);
6814 if (p
->tick
!= p
->update_tick
)
6816 p
->update_tick
= p
->tick
;
6818 /* If process is still active, read any output that remains. */
6819 while (! EQ (p
->filter
, Qt
)
6820 && ! EQ (p
->status
, Qconnect
)
6821 && ! EQ (p
->status
, Qlisten
)
6822 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6824 && p
!= deleting_process
6825 && read_process_output (proc
, p
->infd
) > 0);
6829 /* Get the text to use for the message. */
6830 if (p
->raw_status_new
)
6832 msg
= status_message (p
);
6834 /* If process is terminated, deactivate it or delete it. */
6836 if (CONSP (p
->status
))
6837 symbol
= XCAR (p
->status
);
6839 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6840 || EQ (symbol
, Qclosed
))
6842 if (delete_exited_processes
)
6843 remove_process (proc
);
6845 deactivate_process (proc
);
6848 /* The actions above may have further incremented p->tick.
6849 So set p->update_tick again
6850 so that an error in the sentinel will not cause
6851 this code to be run again. */
6852 p
->update_tick
= p
->tick
;
6853 /* Now output the message suitably. */
6854 if (!NILP (p
->sentinel
))
6855 exec_sentinel (proc
, msg
);
6856 /* Don't bother with a message in the buffer
6857 when a process becomes runnable. */
6858 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6860 Lisp_Object ro
, tem
;
6861 struct buffer
*old
= current_buffer
;
6862 int opoint
, opoint_byte
;
6863 int before
, before_byte
;
6865 ro
= XBUFFER (buffer
)->read_only
;
6867 /* Avoid error if buffer is deleted
6868 (probably that's why the process is dead, too) */
6869 if (NILP (XBUFFER (buffer
)->name
))
6871 Fset_buffer (buffer
);
6874 opoint_byte
= PT_BYTE
;
6875 /* Insert new output into buffer
6876 at the current end-of-output marker,
6877 thus preserving logical ordering of input and output. */
6878 if (XMARKER (p
->mark
)->buffer
)
6879 Fgoto_char (p
->mark
);
6881 SET_PT_BOTH (ZV
, ZV_BYTE
);
6884 before_byte
= PT_BYTE
;
6886 tem
= current_buffer
->read_only
;
6887 current_buffer
->read_only
= Qnil
;
6888 insert_string ("\nProcess ");
6889 Finsert (1, &p
->name
);
6890 insert_string (" ");
6892 current_buffer
->read_only
= tem
;
6893 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6895 if (opoint
>= before
)
6896 SET_PT_BOTH (opoint
+ (PT
- before
),
6897 opoint_byte
+ (PT_BYTE
- before_byte
));
6899 SET_PT_BOTH (opoint
, opoint_byte
);
6901 set_buffer_internal (old
);
6906 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6907 redisplay_preserve_echo_area (13);
6913 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6914 Sset_process_coding_system
, 1, 3, 0,
6915 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6916 DECODING will be used to decode subprocess output and ENCODING to
6917 encode subprocess input. */)
6918 (process
, decoding
, encoding
)
6919 register Lisp_Object process
, decoding
, encoding
;
6921 register struct Lisp_Process
*p
;
6923 CHECK_PROCESS (process
);
6924 p
= XPROCESS (process
);
6926 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6928 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6929 Fcheck_coding_system (decoding
);
6930 Fcheck_coding_system (encoding
);
6932 p
->decode_coding_system
= decoding
;
6933 p
->encode_coding_system
= encoding
;
6934 setup_process_coding_systems (process
);
6939 DEFUN ("process-coding-system",
6940 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6941 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6943 register Lisp_Object process
;
6945 CHECK_PROCESS (process
);
6946 return Fcons (XPROCESS (process
)->decode_coding_system
,
6947 XPROCESS (process
)->encode_coding_system
);
6950 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6951 Sset_process_filter_multibyte
, 2, 2, 0,
6952 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6953 If FLAG is non-nil, the filter is given multibyte strings.
6954 If FLAG is nil, the filter is given unibyte strings. In this case,
6955 all character code conversion except for end-of-line conversion is
6958 Lisp_Object process
, flag
;
6960 register struct Lisp_Process
*p
;
6962 CHECK_PROCESS (process
);
6963 p
= XPROCESS (process
);
6964 p
->filter_multibyte
= !NILP (flag
);
6965 setup_process_coding_systems (process
);
6970 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6971 Sprocess_filter_multibyte_p
, 1, 1, 0,
6972 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6974 Lisp_Object process
;
6976 register struct Lisp_Process
*p
;
6978 CHECK_PROCESS (process
);
6979 p
= XPROCESS (process
);
6981 return (p
->filter_multibyte
? Qt
: Qnil
);
6986 /* Add DESC to the set of keyboard input descriptors. */
6989 add_keyboard_wait_descriptor (desc
)
6992 FD_SET (desc
, &input_wait_mask
);
6993 FD_SET (desc
, &non_process_wait_mask
);
6994 if (desc
> max_keyboard_desc
)
6995 max_keyboard_desc
= desc
;
6998 static int add_gpm_wait_descriptor_called_flag
;
7001 add_gpm_wait_descriptor (desc
)
7004 if (! add_gpm_wait_descriptor_called_flag
)
7005 FD_CLR (0, &input_wait_mask
);
7006 add_gpm_wait_descriptor_called_flag
= 1;
7007 FD_SET (desc
, &input_wait_mask
);
7008 FD_SET (desc
, &gpm_wait_mask
);
7009 if (desc
> max_gpm_desc
)
7010 max_gpm_desc
= desc
;
7013 /* From now on, do not expect DESC to give keyboard input. */
7016 delete_keyboard_wait_descriptor (desc
)
7020 int lim
= max_keyboard_desc
;
7022 FD_CLR (desc
, &input_wait_mask
);
7023 FD_CLR (desc
, &non_process_wait_mask
);
7025 if (desc
== max_keyboard_desc
)
7026 for (fd
= 0; fd
< lim
; fd
++)
7027 if (FD_ISSET (fd
, &input_wait_mask
)
7028 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7029 && !FD_ISSET (fd
, &gpm_wait_mask
))
7030 max_keyboard_desc
= fd
;
7034 delete_gpm_wait_descriptor (desc
)
7038 int lim
= max_gpm_desc
;
7040 FD_CLR (desc
, &input_wait_mask
);
7041 FD_CLR (desc
, &non_process_wait_mask
);
7043 if (desc
== max_gpm_desc
)
7044 for (fd
= 0; fd
< lim
; fd
++)
7045 if (FD_ISSET (fd
, &input_wait_mask
)
7046 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7047 && !FD_ISSET (fd
, &non_process_wait_mask
))
7051 /* Return nonzero if *MASK has a bit set
7052 that corresponds to one of the keyboard input descriptors. */
7055 keyboard_bit_set (mask
)
7060 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
7061 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7062 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7073 inhibit_sentinels
= 0;
7077 if (! noninteractive
|| initialized
)
7079 signal (SIGCHLD
, sigchld_handler
);
7082 FD_ZERO (&input_wait_mask
);
7083 FD_ZERO (&non_keyboard_wait_mask
);
7084 FD_ZERO (&non_process_wait_mask
);
7085 max_process_desc
= 0;
7087 #ifdef NON_BLOCKING_CONNECT
7088 FD_ZERO (&connect_wait_mask
);
7089 num_pending_connects
= 0;
7092 #ifdef ADAPTIVE_READ_BUFFERING
7093 process_output_delay_count
= 0;
7094 process_output_skip
= 0;
7097 /* Don't do this, it caused infinite select loops. The display
7098 method should call add_keyboard_wait_descriptor on stdin if it
7101 FD_SET (0, &input_wait_mask
);
7104 Vprocess_alist
= Qnil
;
7106 deleted_pid_list
= Qnil
;
7108 for (i
= 0; i
< MAXDESC
; i
++)
7110 chan_process
[i
] = Qnil
;
7111 proc_buffered_char
[i
] = -1;
7113 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7114 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7115 #ifdef DATAGRAM_SOCKETS
7116 bzero (datagram_address
, sizeof datagram_address
);
7121 Lisp_Object subfeatures
= Qnil
;
7122 struct socket_options
*sopt
;
7124 #define ADD_SUBFEATURE(key, val) \
7125 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
7127 #ifdef NON_BLOCKING_CONNECT
7128 ADD_SUBFEATURE (QCnowait
, Qt
);
7130 #ifdef DATAGRAM_SOCKETS
7131 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7133 #ifdef HAVE_LOCAL_SOCKETS
7134 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7136 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7138 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7140 #ifdef HAVE_GETSOCKNAME
7141 ADD_SUBFEATURE (QCservice
, Qt
);
7143 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
7144 ADD_SUBFEATURE (QCserver
, Qt
);
7147 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7148 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
7150 Fprovide (intern ("make-network-process"), subfeatures
);
7152 #endif /* HAVE_SOCKETS */
7154 #if defined (DARWIN) || defined (MAC_OSX)
7155 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7156 processes. As such, we only change the default value. */
7159 char *release
= get_operating_system_release();
7160 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7161 && release
[1] == '.')) {
7162 Vprocess_connection_type
= Qnil
;
7171 Qprocessp
= intern ("processp");
7172 staticpro (&Qprocessp
);
7173 Qrun
= intern ("run");
7175 Qstop
= intern ("stop");
7177 Qsignal
= intern ("signal");
7178 staticpro (&Qsignal
);
7180 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7183 Qexit = intern ("exit");
7184 staticpro (&Qexit); */
7186 Qopen
= intern ("open");
7188 Qclosed
= intern ("closed");
7189 staticpro (&Qclosed
);
7190 Qconnect
= intern ("connect");
7191 staticpro (&Qconnect
);
7192 Qfailed
= intern ("failed");
7193 staticpro (&Qfailed
);
7194 Qlisten
= intern ("listen");
7195 staticpro (&Qlisten
);
7196 Qlocal
= intern ("local");
7197 staticpro (&Qlocal
);
7198 Qipv4
= intern ("ipv4");
7201 Qipv6
= intern ("ipv6");
7204 Qdatagram
= intern ("datagram");
7205 staticpro (&Qdatagram
);
7207 QCname
= intern (":name");
7208 staticpro (&QCname
);
7209 QCbuffer
= intern (":buffer");
7210 staticpro (&QCbuffer
);
7211 QChost
= intern (":host");
7212 staticpro (&QChost
);
7213 QCservice
= intern (":service");
7214 staticpro (&QCservice
);
7215 QCtype
= intern (":type");
7216 staticpro (&QCtype
);
7217 QClocal
= intern (":local");
7218 staticpro (&QClocal
);
7219 QCremote
= intern (":remote");
7220 staticpro (&QCremote
);
7221 QCcoding
= intern (":coding");
7222 staticpro (&QCcoding
);
7223 QCserver
= intern (":server");
7224 staticpro (&QCserver
);
7225 QCnowait
= intern (":nowait");
7226 staticpro (&QCnowait
);
7227 QCsentinel
= intern (":sentinel");
7228 staticpro (&QCsentinel
);
7229 QClog
= intern (":log");
7231 QCnoquery
= intern (":noquery");
7232 staticpro (&QCnoquery
);
7233 QCstop
= intern (":stop");
7234 staticpro (&QCstop
);
7235 QCoptions
= intern (":options");
7236 staticpro (&QCoptions
);
7237 QCplist
= intern (":plist");
7238 staticpro (&QCplist
);
7239 QCfilter_multibyte
= intern (":filter-multibyte");
7240 staticpro (&QCfilter_multibyte
);
7242 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
7243 staticpro (&Qlast_nonmenu_event
);
7245 staticpro (&Vprocess_alist
);
7247 staticpro (&deleted_pid_list
);
7250 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7251 doc
: /* *Non-nil means delete processes immediately when they exit.
7252 A value of nil means don't delete them until `list-processes' is run. */);
7254 delete_exited_processes
= 1;
7256 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7257 doc
: /* Control type of device used to communicate with subprocesses.
7258 Values are nil to use a pipe, or t or `pty' to use a pty.
7259 The value has no effect if the system has no ptys or if all ptys are busy:
7260 then a pipe is used in any case.
7261 The value takes effect when `start-process' is called. */);
7262 Vprocess_connection_type
= Qt
;
7264 #ifdef ADAPTIVE_READ_BUFFERING
7265 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7266 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7267 On some systems, when Emacs reads the output from a subprocess, the output data
7268 is read in very small blocks, potentially resulting in very poor performance.
7269 This behavior can be remedied to some extent by setting this variable to a
7270 non-nil value, as it will automatically delay reading from such processes, to
7271 allow them to produce more output before Emacs tries to read it.
7272 If the value is t, the delay is reset after each write to the process; any other
7273 non-nil value means that the delay is not reset on write.
7274 The variable takes effect when `start-process' is called. */);
7275 Vprocess_adaptive_read_buffering
= Qt
;
7278 defsubr (&Sprocessp
);
7279 defsubr (&Sget_process
);
7280 defsubr (&Sget_buffer_process
);
7281 defsubr (&Sdelete_process
);
7282 defsubr (&Sprocess_status
);
7283 defsubr (&Sprocess_exit_status
);
7284 defsubr (&Sprocess_id
);
7285 defsubr (&Sprocess_name
);
7286 defsubr (&Sprocess_tty_name
);
7287 defsubr (&Sprocess_command
);
7288 defsubr (&Sset_process_buffer
);
7289 defsubr (&Sprocess_buffer
);
7290 defsubr (&Sprocess_mark
);
7291 defsubr (&Sset_process_filter
);
7292 defsubr (&Sprocess_filter
);
7293 defsubr (&Sset_process_sentinel
);
7294 defsubr (&Sprocess_sentinel
);
7295 defsubr (&Sset_process_window_size
);
7296 defsubr (&Sset_process_inherit_coding_system_flag
);
7297 defsubr (&Sprocess_inherit_coding_system_flag
);
7298 defsubr (&Sset_process_query_on_exit_flag
);
7299 defsubr (&Sprocess_query_on_exit_flag
);
7300 defsubr (&Sprocess_contact
);
7301 defsubr (&Sprocess_plist
);
7302 defsubr (&Sset_process_plist
);
7303 defsubr (&Slist_processes
);
7304 defsubr (&Sprocess_list
);
7305 defsubr (&Sstart_process
);
7307 defsubr (&Sset_network_process_option
);
7308 defsubr (&Smake_network_process
);
7309 defsubr (&Sformat_network_address
);
7310 #endif /* HAVE_SOCKETS */
7311 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7313 defsubr (&Snetwork_interface_list
);
7315 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7316 defsubr (&Snetwork_interface_info
);
7318 #endif /* HAVE_SOCKETS ... */
7319 #ifdef DATAGRAM_SOCKETS
7320 defsubr (&Sprocess_datagram_address
);
7321 defsubr (&Sset_process_datagram_address
);
7323 defsubr (&Saccept_process_output
);
7324 defsubr (&Sprocess_send_region
);
7325 defsubr (&Sprocess_send_string
);
7326 defsubr (&Sinterrupt_process
);
7327 defsubr (&Skill_process
);
7328 defsubr (&Squit_process
);
7329 defsubr (&Sstop_process
);
7330 defsubr (&Scontinue_process
);
7331 defsubr (&Sprocess_running_child_p
);
7332 defsubr (&Sprocess_send_eof
);
7333 defsubr (&Ssignal_process
);
7334 defsubr (&Swaiting_for_user_input_p
);
7335 /* defsubr (&Sprocess_connection); */
7336 defsubr (&Sset_process_coding_system
);
7337 defsubr (&Sprocess_coding_system
);
7338 defsubr (&Sset_process_filter_multibyte
);
7339 defsubr (&Sprocess_filter_multibyte_p
);
7343 #else /* not subprocesses */
7345 #include <sys/types.h>
7349 #include "systime.h"
7350 #include "charset.h"
7352 #include "termopts.h"
7353 #include "sysselect.h"
7355 extern int frame_garbaged
;
7357 extern EMACS_TIME
timer_check ();
7358 extern int timers_run
;
7362 /* As described above, except assuming that there are no subprocesses:
7364 Wait for timeout to elapse and/or keyboard input to be available.
7367 timeout in seconds, or
7368 zero for no limit, or
7369 -1 means gobble data immediately available but don't wait for any.
7371 read_kbd is a Lisp_Object:
7372 0 to ignore keyboard input, or
7373 1 to return when input is available, or
7374 -1 means caller will actually read the input, so don't throw to
7377 see full version for other parameters. We know that wait_proc will
7378 always be NULL, since `subprocesses' isn't defined.
7380 do_display != 0 means redisplay should be done to show subprocess
7381 output that arrives.
7383 Return true if we received input from any process. */
7386 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7387 wait_for_cell
, wait_proc
, just_wait_proc
)
7388 int time_limit
, microsecs
, read_kbd
, do_display
;
7389 Lisp_Object wait_for_cell
;
7390 struct Lisp_Process
*wait_proc
;
7394 EMACS_TIME end_time
, timeout
;
7395 SELECT_TYPE waitchannels
;
7398 /* What does time_limit really mean? */
7399 if (time_limit
|| microsecs
)
7401 EMACS_GET_TIME (end_time
);
7402 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7403 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7406 /* Turn off periodic alarms (in case they are in use)
7407 and then turn off any other atimers,
7408 because the select emulator uses alarms. */
7410 turn_on_atimers (0);
7414 int timeout_reduced_for_timers
= 0;
7416 /* If calling from keyboard input, do not quit
7417 since we want to return C-g as an input character.
7418 Otherwise, do pending quit if requested. */
7422 /* Exit now if the cell we're waiting for became non-nil. */
7423 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7426 /* Compute time from now till when time limit is up */
7427 /* Exit if already run out */
7428 if (time_limit
== -1)
7430 /* -1 specified for timeout means
7431 gobble output available now
7432 but don't wait at all. */
7434 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7436 else if (time_limit
|| microsecs
)
7438 EMACS_GET_TIME (timeout
);
7439 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7440 if (EMACS_TIME_NEG_P (timeout
))
7445 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7448 /* If our caller will not immediately handle keyboard events,
7449 run timer events directly.
7450 (Callers that will immediately read keyboard events
7451 call timer_delay on their own.) */
7452 if (NILP (wait_for_cell
))
7454 EMACS_TIME timer_delay
;
7458 int old_timers_run
= timers_run
;
7459 timer_delay
= timer_check (1);
7460 if (timers_run
!= old_timers_run
&& do_display
)
7461 /* We must retry, since a timer may have requeued itself
7462 and that could alter the time delay. */
7463 redisplay_preserve_echo_area (14);
7467 while (!detect_input_pending ());
7469 /* If there is unread keyboard input, also return. */
7471 && requeued_events_pending_p ())
7474 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7476 EMACS_TIME difference
;
7477 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7478 if (EMACS_TIME_NEG_P (difference
))
7480 timeout
= timer_delay
;
7481 timeout_reduced_for_timers
= 1;
7486 /* Cause C-g and alarm signals to take immediate action,
7487 and cause input available signals to zero out timeout. */
7489 set_waiting_for_input (&timeout
);
7491 /* Wait till there is something to do. */
7493 if (! read_kbd
&& NILP (wait_for_cell
))
7494 FD_ZERO (&waitchannels
);
7496 FD_SET (0, &waitchannels
);
7498 /* If a frame has been newly mapped and needs updating,
7499 reprocess its display stuff. */
7500 if (frame_garbaged
&& do_display
)
7502 clear_waiting_for_input ();
7503 redisplay_preserve_echo_area (15);
7505 set_waiting_for_input (&timeout
);
7508 if (read_kbd
&& detect_input_pending ())
7511 FD_ZERO (&waitchannels
);
7514 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7519 /* Make C-g and alarm signals set flags again */
7520 clear_waiting_for_input ();
7522 /* If we woke up due to SIGWINCH, actually change size now. */
7523 do_pending_window_change (0);
7525 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7526 /* We waited the full specified time, so return now. */
7531 /* If the system call was interrupted, then go around the
7533 if (xerrno
== EINTR
)
7534 FD_ZERO (&waitchannels
);
7536 error ("select error: %s", emacs_strerror (xerrno
));
7539 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7540 /* System sometimes fails to deliver SIGIO. */
7541 kill (getpid (), SIGIO
);
7544 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7545 kill (getpid (), SIGIO
);
7548 /* Check for keyboard input */
7551 && detect_input_pending_run_timers (do_display
))
7553 swallow_events (do_display
);
7554 if (detect_input_pending_run_timers (do_display
))
7558 /* If there is unread keyboard input, also return. */
7560 && requeued_events_pending_p ())
7563 /* If wait_for_cell. check for keyboard input
7564 but don't run any timers.
7565 ??? (It seems wrong to me to check for keyboard
7566 input at all when wait_for_cell, but the code
7567 has been this way since July 1994.
7568 Try changing this after version 19.31.) */
7569 if (! NILP (wait_for_cell
)
7570 && detect_input_pending ())
7572 swallow_events (do_display
);
7573 if (detect_input_pending ())
7577 /* Exit now if the cell we're waiting for became non-nil. */
7578 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7588 /* Don't confuse make-docfile by having two doc strings for this function.
7589 make-docfile does not pay attention to #if, for good reason! */
7590 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7593 register Lisp_Object name
;
7598 /* Don't confuse make-docfile by having two doc strings for this function.
7599 make-docfile does not pay attention to #if, for good reason! */
7600 DEFUN ("process-inherit-coding-system-flag",
7601 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7605 register Lisp_Object process
;
7607 /* Ignore the argument and return the value of
7608 inherit-process-coding-system. */
7609 return inherit_process_coding_system
? Qt
: Qnil
;
7612 /* Kill all processes associated with `buffer'.
7613 If `buffer' is nil, kill all processes.
7614 Since we have no subprocesses, this does nothing. */
7617 kill_buffer_processes (buffer
)
7630 QCtype
= intern (":type");
7631 staticpro (&QCtype
);
7633 defsubr (&Sget_buffer_process
);
7634 defsubr (&Sprocess_inherit_coding_system_flag
);
7638 #endif /* not subprocesses */
7640 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7641 (do not change this comment) */