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 2, 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>
124 /* Disable IPv6 support for w32 until someone figures out how to do it
138 #include "character.h"
141 #include "termhooks.h"
142 #include "termopts.h"
143 #include "commands.h"
144 #include "keyboard.h"
146 #include "blockinput.h"
147 #include "dispextern.h"
148 #include "composite.h"
151 Lisp_Object Qprocessp
;
152 Lisp_Object Qrun
, Qstop
, Qsignal
;
153 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
154 Lisp_Object Qlocal
, Qipv4
, Qdatagram
;
158 Lisp_Object QCname
, QCbuffer
, QChost
, QCservice
, QCtype
;
159 Lisp_Object QClocal
, QCremote
, QCcoding
;
160 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
161 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
162 Lisp_Object QCfilter_multibyte
;
163 Lisp_Object Qlast_nonmenu_event
;
164 /* QCfamily is declared and initialized in xfaces.c,
165 QCfilter in keyboard.c. */
166 extern Lisp_Object QCfamily
, QCfilter
;
168 /* Qexit is declared and initialized in eval.c. */
170 /* QCfamily is defined in xfaces.c. */
171 extern Lisp_Object QCfamily
;
172 /* QCfilter is defined in keyboard.c. */
173 extern Lisp_Object QCfilter
;
175 /* a process object is a network connection when its childp field is neither
176 Qt nor Qnil but is instead a property list (KEY VAL ...). */
179 #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp))
180 #define NETCONN1_P(p) (GC_CONSP ((p)->childp))
182 #define NETCONN_P(p) 0
183 #define NETCONN1_P(p) 0
184 #endif /* HAVE_SOCKETS */
186 /* Define first descriptor number available for subprocesses. */
188 #define FIRST_PROC_DESC 1
190 #define FIRST_PROC_DESC 3
193 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
196 #if !defined (SIGCHLD) && defined (SIGCLD)
197 #define SIGCHLD SIGCLD
200 #include "syssignal.h"
204 extern char *get_operating_system_release ();
210 extern char *sys_errlist
[];
217 /* t means use pty, nil means use a pipe,
218 maybe other values to come. */
219 static Lisp_Object Vprocess_connection_type
;
223 #include <sys/socket.h>
227 /* These next two vars are non-static since sysdep.c uses them in the
228 emulation of `select'. */
229 /* Number of events of change of status of a process. */
231 /* Number of events for which the user or sentinel has been notified. */
234 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
236 #ifdef BROKEN_NON_BLOCKING_CONNECT
237 #undef NON_BLOCKING_CONNECT
239 #ifndef NON_BLOCKING_CONNECT
242 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
243 #if defined (O_NONBLOCK) || defined (O_NDELAY)
244 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
245 #define NON_BLOCKING_CONNECT
246 #endif /* EWOULDBLOCK || EINPROGRESS */
247 #endif /* O_NONBLOCK || O_NDELAY */
248 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
249 #endif /* HAVE_SELECT */
250 #endif /* HAVE_SOCKETS */
251 #endif /* NON_BLOCKING_CONNECT */
252 #endif /* BROKEN_NON_BLOCKING_CONNECT */
254 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
255 this system. We need to read full packets, so we need a
256 "non-destructive" select. So we require either native select,
257 or emulation of select using FIONREAD. */
259 #ifdef BROKEN_DATAGRAM_SOCKETS
260 #undef DATAGRAM_SOCKETS
262 #ifndef DATAGRAM_SOCKETS
264 #if defined (HAVE_SELECT) || defined (FIONREAD)
265 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
266 #define DATAGRAM_SOCKETS
267 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
268 #endif /* HAVE_SELECT || FIONREAD */
269 #endif /* HAVE_SOCKETS */
270 #endif /* DATAGRAM_SOCKETS */
271 #endif /* BROKEN_DATAGRAM_SOCKETS */
274 #undef NON_BLOCKING_CONNECT
275 #undef DATAGRAM_SOCKETS
278 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
279 #ifdef EMACS_HAS_USECS
280 #define ADAPTIVE_READ_BUFFERING
284 #ifdef ADAPTIVE_READ_BUFFERING
285 #define READ_OUTPUT_DELAY_INCREMENT 10000
286 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
287 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
289 /* Number of processes which have a non-zero read_output_delay,
290 and therefore might be delayed for adaptive read buffering. */
292 static int process_output_delay_count
;
294 /* Non-zero if any process has non-nil read_output_skip. */
296 static int process_output_skip
;
298 /* Non-nil means to delay reading process output to improve buffering.
299 A value of t means that delay is reset after each send, any other
300 non-nil value does not reset the delay. A value of nil disables
301 adaptive read buffering completely. */
302 static Lisp_Object Vprocess_adaptive_read_buffering
;
304 #define process_output_delay_count 0
308 #include "sysselect.h"
310 static int keyboard_bit_set
P_ ((SELECT_TYPE
*));
311 static void deactivate_process
P_ ((Lisp_Object
));
312 static void status_notify
P_ ((struct Lisp_Process
*));
313 static int read_process_output
P_ ((Lisp_Object
, int));
315 /* If we support a window system, turn on the code to poll periodically
316 to detect C-g. It isn't actually used when doing interrupt input. */
317 #ifdef HAVE_WINDOW_SYSTEM
318 #define POLL_FOR_INPUT
321 static Lisp_Object
get_process ();
322 static void exec_sentinel ();
324 extern EMACS_TIME
timer_check ();
325 extern int timers_run
;
327 /* Mask of bits indicating the descriptors that we wait for input on. */
329 static SELECT_TYPE input_wait_mask
;
331 /* Mask that excludes keyboard input descriptor (s). */
333 static SELECT_TYPE non_keyboard_wait_mask
;
335 /* Mask that excludes process input descriptor (s). */
337 static SELECT_TYPE non_process_wait_mask
;
339 #ifdef NON_BLOCKING_CONNECT
340 /* Mask of bits indicating the descriptors that we wait for connect to
341 complete on. Once they complete, they are removed from this mask
342 and added to the input_wait_mask and non_keyboard_wait_mask. */
344 static SELECT_TYPE connect_wait_mask
;
346 /* Number of bits set in connect_wait_mask. */
347 static int num_pending_connects
;
349 #define IF_NON_BLOCKING_CONNECT(s) s
351 #define IF_NON_BLOCKING_CONNECT(s)
354 /* The largest descriptor currently in use for a process object. */
355 static int max_process_desc
;
357 /* The largest descriptor currently in use for keyboard input. */
358 static int max_keyboard_desc
;
360 /* Nonzero means delete a process right away if it exits. */
361 static int delete_exited_processes
;
363 /* Indexed by descriptor, gives the process (if any) for that descriptor */
364 Lisp_Object chan_process
[MAXDESC
];
366 /* Alist of elements (NAME . PROCESS) */
367 Lisp_Object Vprocess_alist
;
369 /* Buffered-ahead input char from process, indexed by channel.
370 -1 means empty (no char is buffered).
371 Used on sys V where the only way to tell if there is any
372 output from the process is to read at least one char.
373 Always -1 on systems that support FIONREAD. */
375 /* Don't make static; need to access externally. */
376 int proc_buffered_char
[MAXDESC
];
378 /* Table of `struct coding-system' for each process. */
379 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
380 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
382 #ifdef DATAGRAM_SOCKETS
383 /* Table of `partner address' for datagram sockets. */
384 struct sockaddr_and_len
{
387 } datagram_address
[MAXDESC
];
388 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
389 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0)
391 #define DATAGRAM_CHAN_P(chan) (0)
392 #define DATAGRAM_CONN_P(proc) (0)
395 /* Maximum number of bytes to send to a pty without an eof. */
396 static int pty_max_bytes
;
398 /* Nonzero means don't run process sentinels. This is used
400 int inhibit_sentinels
;
406 /* The file name of the pty opened by allocate_pty. */
408 static char pty_name
[24];
411 /* Compute the Lisp form of the process status, p->status, from
412 the numeric status that was returned by `wait'. */
414 static Lisp_Object
status_convert ();
418 struct Lisp_Process
*p
;
420 union { int i
; WAITTYPE wt
; } u
;
421 eassert (p
->raw_status_new
);
423 p
->status
= status_convert (u
.wt
);
424 p
->raw_status_new
= 0;
427 /* Convert a process status word in Unix format to
428 the list that we use internally. */
435 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
436 else if (WIFEXITED (w
))
437 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
438 WCOREDUMP (w
) ? Qt
: Qnil
));
439 else if (WIFSIGNALED (w
))
440 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
441 WCOREDUMP (w
) ? Qt
: Qnil
));
446 /* Given a status-list, extract the three pieces of information
447 and store them individually through the three pointers. */
450 decode_status (l
, symbol
, code
, coredump
)
468 *code
= XFASTINT (XCAR (tem
));
470 *coredump
= !NILP (tem
);
474 /* Return a string describing a process status list. */
478 struct Lisp_Process
*p
;
480 Lisp_Object status
= p
->status
;
483 Lisp_Object string
, string2
;
485 decode_status (status
, &symbol
, &code
, &coredump
);
487 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
490 synchronize_system_messages_locale ();
491 signame
= strsignal (code
);
494 string
= build_string (signame
);
495 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
496 SSET (string
, 0, DOWNCASE (SREF (string
, 0)));
497 return concat2 (string
, string2
);
499 else if (EQ (symbol
, Qexit
))
502 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
504 return build_string ("finished\n");
505 string
= Fnumber_to_string (make_number (code
));
506 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
507 return concat3 (build_string ("exited abnormally with code "),
510 else if (EQ (symbol
, Qfailed
))
512 string
= Fnumber_to_string (make_number (code
));
513 string2
= build_string ("\n");
514 return concat3 (build_string ("failed with code "),
518 return Fcopy_sequence (Fsymbol_name (symbol
));
523 /* Open an available pty, returning a file descriptor.
524 Return -1 on failure.
525 The file name of the terminal corresponding to the pty
526 is left in the variable pty_name. */
537 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
538 for (i
= 0; i
< 16; i
++)
541 struct stat stb
; /* Used in some PTY_OPEN. */
542 #ifdef PTY_NAME_SPRINTF
545 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
546 #endif /* no PTY_NAME_SPRINTF */
550 #else /* no PTY_OPEN */
553 /* Unusual IRIS code */
554 *ptyv
= emacs_open ("/dev/ptc", O_RDWR
| O_NDELAY
, 0);
557 if (fstat (fd
, &stb
) < 0)
559 # else /* not IRIS */
560 { /* Some systems name their pseudoterminals so that there are gaps in
561 the usual sequence - for example, on HP9000/S700 systems, there
562 are no pseudoterminals with names ending in 'f'. So we wait for
563 three failures in a row before deciding that we've reached the
565 int failed_count
= 0;
567 if (stat (pty_name
, &stb
) < 0)
570 if (failed_count
>= 3)
577 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
579 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
581 # endif /* not IRIS */
583 #endif /* no PTY_OPEN */
587 /* check to make certain that both sides are available
588 this avoids a nasty yet stupid bug in rlogins */
589 #ifdef PTY_TTY_NAME_SPRINTF
592 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
593 #endif /* no PTY_TTY_NAME_SPRINTF */
595 if (access (pty_name
, 6) != 0)
598 # if !defined(IRIS) && !defined(__sgi)
604 #endif /* not UNIPLUS */
611 #endif /* HAVE_PTYS */
617 register Lisp_Object val
, tem
, name1
;
618 register struct Lisp_Process
*p
;
622 p
= allocate_process ();
624 XSETINT (p
->infd
, -1);
625 XSETINT (p
->outfd
, -1);
626 XSETFASTINT (p
->tick
, 0);
627 XSETFASTINT (p
->update_tick
, 0);
629 p
->raw_status_new
= 0;
631 p
->mark
= Fmake_marker ();
633 #ifdef ADAPTIVE_READ_BUFFERING
634 p
->adaptive_read_buffering
= Qnil
;
635 XSETFASTINT (p
->read_output_delay
, 0);
636 p
->read_output_skip
= Qnil
;
639 /* If name is already in use, modify it until it is unused. */
644 tem
= Fget_process (name1
);
645 if (NILP (tem
)) break;
646 sprintf (suffix
, "<%d>", i
);
647 name1
= concat2 (name
, build_string (suffix
));
651 XSETPROCESS (val
, p
);
652 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
657 remove_process (proc
)
658 register Lisp_Object proc
;
660 register Lisp_Object pair
;
662 pair
= Frassq (proc
, Vprocess_alist
);
663 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
665 deactivate_process (proc
);
668 /* Setup coding systems of PROCESS. */
671 setup_process_coding_systems (process
)
674 struct Lisp_Process
*p
= XPROCESS (process
);
675 int inch
= XINT (p
->infd
);
676 int outch
= XINT (p
->outfd
);
677 Lisp_Object coding_system
;
679 if (inch
< 0 || outch
< 0)
682 if (!proc_decode_coding_system
[inch
])
683 proc_decode_coding_system
[inch
]
684 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
685 coding_system
= p
->decode_coding_system
;
686 if (! NILP (p
->filter
))
688 if (NILP (p
->filter_multibyte
))
689 coding_system
= raw_text_coding_system (coding_system
);
691 else if (BUFFERP (p
->buffer
))
693 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
694 coding_system
= raw_text_coding_system (coding_system
);
696 setup_coding_system (coding_system
, proc_decode_coding_system
[inch
]);
698 if (!proc_encode_coding_system
[outch
])
699 proc_encode_coding_system
[outch
]
700 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
701 setup_coding_system (p
->encode_coding_system
,
702 proc_encode_coding_system
[outch
]);
705 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
706 doc
: /* Return t if OBJECT is a process. */)
710 return PROCESSP (object
) ? Qt
: Qnil
;
713 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
714 doc
: /* Return the process named NAME, or nil if there is none. */)
716 register Lisp_Object name
;
721 return Fcdr (Fassoc (name
, Vprocess_alist
));
724 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
725 doc
: /* Return the (or a) process associated with BUFFER.
726 BUFFER may be a buffer or the name of one. */)
728 register Lisp_Object buffer
;
730 register Lisp_Object buf
, tail
, proc
;
732 if (NILP (buffer
)) return Qnil
;
733 buf
= Fget_buffer (buffer
);
734 if (NILP (buf
)) return Qnil
;
736 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
738 proc
= Fcdr (Fcar (tail
));
739 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
745 /* This is how commands for the user decode process arguments. It
746 accepts a process, a process name, a buffer, a buffer name, or nil.
747 Buffers denote the first process in the buffer, and nil denotes the
752 register Lisp_Object name
;
754 register Lisp_Object proc
, obj
;
757 obj
= Fget_process (name
);
759 obj
= Fget_buffer (name
);
761 error ("Process %s does not exist", SDATA (name
));
763 else if (NILP (name
))
764 obj
= Fcurrent_buffer ();
768 /* Now obj should be either a buffer object or a process object.
772 proc
= Fget_buffer_process (obj
);
774 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
786 /* Fdelete_process promises to immediately forget about the process, but in
787 reality, Emacs needs to remember those processes until they have been
788 treated by sigchld_handler; otherwise this handler would consider the
789 process as being synchronous and say that the synchronous process is
791 static Lisp_Object deleted_pid_list
;
794 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
795 doc
: /* Delete PROCESS: kill it and forget about it immediately.
796 PROCESS may be a process, a buffer, the name of a process or buffer, or
797 nil, indicating the current buffer's process. */)
799 register Lisp_Object process
;
801 register struct Lisp_Process
*p
;
803 process
= get_process (process
);
804 p
= XPROCESS (process
);
806 p
->raw_status_new
= 0;
809 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
810 XSETINT (p
->tick
, ++process_tick
);
813 else if (XINT (p
->infd
) >= 0)
817 /* Assignment to EMACS_INT stops GCC whining about limited range
819 EMACS_INT pid
= p
->pid
;;
821 /* No problem storing the pid here, as it is still in Vprocess_alist. */
822 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
823 /* GC treated elements set to nil. */
824 Fdelq (Qnil
, deleted_pid_list
));
825 /* If the process has already signaled, remove it from the list. */
826 if (p
->raw_status_new
)
829 if (CONSP (p
->status
))
830 symbol
= XCAR (p
->status
);
831 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
832 Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
836 Fkill_process (process
, Qnil
);
837 /* Do this now, since remove_process will make sigchld_handler do nothing. */
839 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
840 XSETINT (p
->tick
, ++process_tick
);
844 remove_process (process
);
848 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
849 doc
: /* Return the status of PROCESS.
850 The returned value is one of the following symbols:
851 run -- for a process that is running.
852 stop -- for a process stopped but continuable.
853 exit -- for a process that has exited.
854 signal -- for a process that has got a fatal signal.
855 open -- for a network stream connection that is open.
856 listen -- for a network stream server that is listening.
857 closed -- for a network stream connection that is closed.
858 connect -- when waiting for a non-blocking connection to complete.
859 failed -- when a non-blocking connection has failed.
860 nil -- if arg is a process name and no such process exists.
861 PROCESS may be a process, a buffer, the name of a process, or
862 nil, indicating the current buffer's process. */)
864 register Lisp_Object process
;
866 register struct Lisp_Process
*p
;
867 register Lisp_Object status
;
869 if (STRINGP (process
))
870 process
= Fget_process (process
);
872 process
= get_process (process
);
877 p
= XPROCESS (process
);
878 if (p
->raw_status_new
)
882 status
= XCAR (status
);
885 if (EQ (status
, Qexit
))
887 else if (EQ (p
->command
, Qt
))
889 else if (EQ (status
, Qrun
))
895 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
897 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
898 If PROCESS has not yet exited or died, return 0. */)
900 register Lisp_Object process
;
902 CHECK_PROCESS (process
);
903 if (XPROCESS (process
)->raw_status_new
)
904 update_status (XPROCESS (process
));
905 if (CONSP (XPROCESS (process
)->status
))
906 return XCAR (XCDR (XPROCESS (process
)->status
));
907 return make_number (0);
910 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
911 doc
: /* Return the process id of PROCESS.
912 This is the pid of the external process which PROCESS uses or talks to.
913 For a network connection, this value is nil. */)
915 register Lisp_Object process
;
917 /* Assignment to EMACS_INT stops GCC whining about limited range of
921 CHECK_PROCESS (process
);
922 pid
= XPROCESS (process
)->pid
;
923 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
926 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
927 doc
: /* Return the name of PROCESS, as a string.
928 This is the name of the program invoked in PROCESS,
929 possibly modified to make it unique among process names. */)
931 register Lisp_Object process
;
933 CHECK_PROCESS (process
);
934 return XPROCESS (process
)->name
;
937 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
938 doc
: /* Return the command that was executed to start PROCESS.
939 This is a list of strings, the first string being the program executed
940 and the rest of the strings being the arguments given to it.
941 For a non-child channel, this is nil. */)
943 register Lisp_Object process
;
945 CHECK_PROCESS (process
);
946 return XPROCESS (process
)->command
;
949 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
950 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
951 This is the terminal that the process itself reads and writes on,
952 not the name of the pty that Emacs uses to talk with that terminal. */)
954 register Lisp_Object process
;
956 CHECK_PROCESS (process
);
957 return XPROCESS (process
)->tty_name
;
960 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
962 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
964 register Lisp_Object process
, buffer
;
966 struct Lisp_Process
*p
;
968 CHECK_PROCESS (process
);
970 CHECK_BUFFER (buffer
);
971 p
= XPROCESS (process
);
974 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
975 setup_process_coding_systems (process
);
979 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
981 doc
: /* Return the buffer PROCESS is associated with.
982 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
984 register Lisp_Object process
;
986 CHECK_PROCESS (process
);
987 return XPROCESS (process
)->buffer
;
990 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
992 doc
: /* Return the marker for the end of the last output from PROCESS. */)
994 register Lisp_Object process
;
996 CHECK_PROCESS (process
);
997 return XPROCESS (process
)->mark
;
1000 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1002 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
1003 t means stop accepting output from the process.
1005 When a process has a filter, its buffer is not used for output.
1006 Instead, each time it does output, the entire string of output is
1007 passed to the filter.
1009 The filter gets two arguments: the process and the string of output.
1010 The string argument is normally a multibyte string, except:
1011 - if the process' input coding system is no-conversion or raw-text,
1012 it is a unibyte string (the non-converted input), or else
1013 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1014 string (the result of converting the decoded input multibyte
1015 string to unibyte with `string-make-unibyte'). */)
1017 register Lisp_Object process
, filter
;
1019 struct Lisp_Process
*p
;
1021 CHECK_PROCESS (process
);
1022 p
= XPROCESS (process
);
1024 /* Don't signal an error if the process' input file descriptor
1025 is closed. This could make debugging Lisp more difficult,
1026 for example when doing something like
1028 (setq process (start-process ...))
1030 (set-process-filter process ...) */
1032 if (XINT (p
->infd
) >= 0)
1034 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1036 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
1037 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
1039 else if (EQ (p
->filter
, Qt
)
1040 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
1042 FD_SET (XINT (p
->infd
), &input_wait_mask
);
1043 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
1049 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1050 setup_process_coding_systems (process
);
1054 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1056 doc
: /* Returns the filter function of PROCESS; nil if none.
1057 See `set-process-filter' for more info on filter functions. */)
1059 register Lisp_Object process
;
1061 CHECK_PROCESS (process
);
1062 return XPROCESS (process
)->filter
;
1065 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1067 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1068 The sentinel is called as a function when the process changes state.
1069 It gets two arguments: the process, and a string describing the change. */)
1071 register Lisp_Object process
, sentinel
;
1073 struct Lisp_Process
*p
;
1075 CHECK_PROCESS (process
);
1076 p
= XPROCESS (process
);
1078 p
->sentinel
= sentinel
;
1080 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1084 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1086 doc
: /* Return the sentinel of PROCESS; nil if none.
1087 See `set-process-sentinel' for more info on sentinels. */)
1089 register Lisp_Object process
;
1091 CHECK_PROCESS (process
);
1092 return XPROCESS (process
)->sentinel
;
1095 DEFUN ("set-process-window-size", Fset_process_window_size
,
1096 Sset_process_window_size
, 3, 3, 0,
1097 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1098 (process
, height
, width
)
1099 register Lisp_Object process
, height
, width
;
1101 CHECK_PROCESS (process
);
1102 CHECK_NATNUM (height
);
1103 CHECK_NATNUM (width
);
1105 if (XINT (XPROCESS (process
)->infd
) < 0
1106 || set_window_size (XINT (XPROCESS (process
)->infd
),
1107 XINT (height
), XINT (width
)) <= 0)
1113 DEFUN ("set-process-inherit-coding-system-flag",
1114 Fset_process_inherit_coding_system_flag
,
1115 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1116 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1117 If the second argument FLAG is non-nil, then the variable
1118 `buffer-file-coding-system' of the buffer associated with PROCESS
1119 will be bound to the value of the coding system used to decode
1122 This is useful when the coding system specified for the process buffer
1123 leaves either the character code conversion or the end-of-line conversion
1124 unspecified, or if the coding system used to decode the process output
1125 is more appropriate for saving the process buffer.
1127 Binding the variable `inherit-process-coding-system' to non-nil before
1128 starting the process is an alternative way of setting the inherit flag
1129 for the process which will run. */)
1131 register Lisp_Object process
, flag
;
1133 CHECK_PROCESS (process
);
1134 XPROCESS (process
)->inherit_coding_system_flag
= flag
;
1138 DEFUN ("process-inherit-coding-system-flag",
1139 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1141 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1142 If this flag is t, `buffer-file-coding-system' of the buffer
1143 associated with PROCESS will inherit the coding system used to decode
1144 the process output. */)
1146 register Lisp_Object process
;
1148 CHECK_PROCESS (process
);
1149 return XPROCESS (process
)->inherit_coding_system_flag
;
1152 DEFUN ("set-process-query-on-exit-flag",
1153 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1155 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1156 If the second argument FLAG is non-nil, Emacs will query the user before
1157 exiting if PROCESS is running. */)
1159 register Lisp_Object process
, flag
;
1161 CHECK_PROCESS (process
);
1162 XPROCESS (process
)->kill_without_query
= Fnull (flag
);
1166 DEFUN ("process-query-on-exit-flag",
1167 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1169 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1171 register Lisp_Object process
;
1173 CHECK_PROCESS (process
);
1174 return Fnull (XPROCESS (process
)->kill_without_query
);
1177 #ifdef DATAGRAM_SOCKETS
1178 Lisp_Object
Fprocess_datagram_address ();
1181 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1183 doc
: /* Return the contact info of PROCESS; t for a real child.
1184 For a net connection, the value depends on the optional KEY arg.
1185 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1186 if KEY is t, the complete contact information for the connection is
1187 returned, else the specific value for the keyword KEY is returned.
1188 See `make-network-process' for a list of keywords. */)
1190 register Lisp_Object process
, key
;
1192 Lisp_Object contact
;
1194 CHECK_PROCESS (process
);
1195 contact
= XPROCESS (process
)->childp
;
1197 #ifdef DATAGRAM_SOCKETS
1198 if (DATAGRAM_CONN_P (process
)
1199 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1200 contact
= Fplist_put (contact
, QCremote
,
1201 Fprocess_datagram_address (process
));
1204 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1207 return Fcons (Fplist_get (contact
, QChost
),
1208 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1209 return Fplist_get (contact
, key
);
1212 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1214 doc
: /* Return the plist of PROCESS. */)
1216 register Lisp_Object process
;
1218 CHECK_PROCESS (process
);
1219 return XPROCESS (process
)->plist
;
1222 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1224 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1226 register Lisp_Object process
, plist
;
1228 CHECK_PROCESS (process
);
1231 XPROCESS (process
)->plist
= plist
;
1235 #if 0 /* Turned off because we don't currently record this info
1236 in the process. Perhaps add it. */
1237 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1238 doc
: /* Return the connection type of PROCESS.
1239 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1240 a socket connection. */)
1242 Lisp_Object process
;
1244 return XPROCESS (process
)->type
;
1249 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1251 doc
: /* Convert network ADDRESS from internal format to a string.
1252 A 4 or 5 element vector represents an IPv4 address (with port number).
1253 An 8 or 9 element vector represents an IPv6 address (with port number).
1254 If optional second argument OMIT-PORT is non-nil, don't include a port
1255 number in the string, even when present in ADDRESS.
1256 Returns nil if format of ADDRESS is invalid. */)
1257 (address
, omit_port
)
1258 Lisp_Object address
, omit_port
;
1263 if (STRINGP (address
)) /* AF_LOCAL */
1266 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1268 register struct Lisp_Vector
*p
= XVECTOR (address
);
1269 Lisp_Object args
[6];
1272 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1274 args
[0] = build_string ("%d.%d.%d.%d");
1277 else if (p
->size
== 5)
1279 args
[0] = build_string ("%d.%d.%d.%d:%d");
1282 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1284 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1287 else if (p
->size
== 9)
1289 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1295 for (i
= 0; i
< nargs
; i
++)
1296 args
[i
+1] = p
->contents
[i
];
1297 return Fformat (nargs
+1, args
);
1300 if (CONSP (address
))
1302 Lisp_Object args
[2];
1303 args
[0] = build_string ("<Family %d>");
1304 args
[1] = Fcar (address
);
1305 return Fformat (2, args
);
1314 list_processes_1 (query_only
)
1315 Lisp_Object query_only
;
1317 register Lisp_Object tail
, tem
;
1318 Lisp_Object proc
, minspace
, tem1
;
1319 register struct Lisp_Process
*p
;
1321 int w_proc
, w_buffer
, w_tty
;
1323 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1325 w_proc
= 4; /* Proc */
1326 w_buffer
= 6; /* Buffer */
1327 w_tty
= 0; /* Omit if no ttys */
1329 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1333 proc
= Fcdr (Fcar (tail
));
1334 p
= XPROCESS (proc
);
1335 if (NILP (p
->childp
))
1337 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1339 if (STRINGP (p
->name
)
1340 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1342 if (!NILP (p
->buffer
))
1344 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1345 w_buffer
= 8; /* (Killed) */
1346 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1349 if (STRINGP (p
->tty_name
)
1350 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1354 XSETFASTINT (i_status
, w_proc
+ 1);
1355 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1358 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1359 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1362 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1365 XSETFASTINT (minspace
, 1);
1367 set_buffer_internal (XBUFFER (Vstandard_output
));
1368 current_buffer
->undo_list
= Qt
;
1370 current_buffer
->truncate_lines
= Qt
;
1372 write_string ("Proc", -1);
1373 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1374 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1377 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1379 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1380 write_string ("\n", -1);
1382 write_string ("----", -1);
1383 Findent_to (i_status
, minspace
); write_string ("------", -1);
1384 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1387 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1389 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1390 write_string ("\n", -1);
1392 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1396 proc
= Fcdr (Fcar (tail
));
1397 p
= XPROCESS (proc
);
1398 if (NILP (p
->childp
))
1400 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1403 Finsert (1, &p
->name
);
1404 Findent_to (i_status
, minspace
);
1406 if (p
->raw_status_new
)
1409 if (CONSP (p
->status
))
1410 symbol
= XCAR (p
->status
);
1413 if (EQ (symbol
, Qsignal
))
1416 tem
= Fcar (Fcdr (p
->status
));
1418 if (XINT (tem
) < NSIG
)
1419 write_string (sys_errlist
[XINT (tem
)], -1);
1422 Fprinc (symbol
, Qnil
);
1424 else if (NETCONN1_P (p
))
1426 if (EQ (symbol
, Qexit
))
1427 write_string ("closed", -1);
1428 else if (EQ (p
->command
, Qt
))
1429 write_string ("stopped", -1);
1430 else if (EQ (symbol
, Qrun
))
1431 write_string ("open", -1);
1433 Fprinc (symbol
, Qnil
);
1436 Fprinc (symbol
, Qnil
);
1438 if (EQ (symbol
, Qexit
))
1441 tem
= Fcar (Fcdr (p
->status
));
1444 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1445 write_string (tembuf
, -1);
1449 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1452 Findent_to (i_buffer
, minspace
);
1453 if (NILP (p
->buffer
))
1454 insert_string ("(none)");
1455 else if (NILP (XBUFFER (p
->buffer
)->name
))
1456 insert_string ("(Killed)");
1458 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1462 Findent_to (i_tty
, minspace
);
1463 if (STRINGP (p
->tty_name
))
1464 Finsert (1, &p
->tty_name
);
1467 Findent_to (i_command
, minspace
);
1469 if (EQ (p
->status
, Qlisten
))
1471 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1472 if (INTEGERP (port
))
1473 port
= Fnumber_to_string (port
);
1475 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1476 sprintf (tembuf
, "(network %s server on %s)\n",
1477 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1478 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1479 insert_string (tembuf
);
1481 else if (NETCONN1_P (p
))
1483 /* For a local socket, there is no host name,
1484 so display service instead. */
1485 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1486 if (!STRINGP (host
))
1488 host
= Fplist_get (p
->childp
, QCservice
);
1489 if (INTEGERP (host
))
1490 host
= Fnumber_to_string (host
);
1493 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1494 sprintf (tembuf
, "(network %s connection to %s)\n",
1495 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1496 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1497 insert_string (tembuf
);
1509 insert_string (" ");
1511 insert_string ("\n");
1515 status_notify (NULL
);
1519 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1520 doc
: /* Display a list of all processes.
1521 If optional argument QUERY-ONLY is non-nil, only processes with
1522 the query-on-exit flag set will be listed.
1523 Any process listed as exited or signaled is actually eliminated
1524 after the listing is made. */)
1526 Lisp_Object query_only
;
1528 internal_with_output_to_temp_buffer ("*Process List*",
1529 list_processes_1
, query_only
);
1533 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1534 doc
: /* Return a list of all processes. */)
1537 return Fmapcar (Qcdr
, Vprocess_alist
);
1540 /* Starting asynchronous inferior processes. */
1542 static Lisp_Object
start_process_unwind ();
1544 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1545 doc
: /* Start a program in a subprocess. Return the process object for it.
1546 NAME is name for process. It is modified if necessary to make it unique.
1547 BUFFER is the buffer (or buffer name) to associate with the process.
1548 Process output goes at end of that buffer, unless you specify
1549 an output stream or filter function to handle the output.
1550 BUFFER may be also nil, meaning that this process is not associated
1552 PROGRAM is the program file name. It is searched for in PATH.
1553 Remaining arguments are strings to give program as arguments.
1555 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1558 register Lisp_Object
*args
;
1560 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1562 register unsigned char *new_argv
;
1565 register unsigned char **new_argv
;
1568 int count
= SPECPDL_INDEX ();
1572 buffer
= Fget_buffer_create (buffer
);
1574 /* Make sure that the child will be able to chdir to the current
1575 buffer's current directory, or its unhandled equivalent. We
1576 can't just have the child check for an error when it does the
1577 chdir, since it's in a vfork.
1579 We have to GCPRO around this because Fexpand_file_name and
1580 Funhandled_file_name_directory might call a file name handling
1581 function. The argument list is protected by the caller, so all
1582 we really have to worry about is buffer. */
1584 struct gcpro gcpro1
, gcpro2
;
1586 current_dir
= current_buffer
->directory
;
1588 GCPRO2 (buffer
, current_dir
);
1591 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1593 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1594 report_file_error ("Setting current directory",
1595 Fcons (current_buffer
->directory
, Qnil
));
1601 CHECK_STRING (name
);
1605 CHECK_STRING (program
);
1607 proc
= make_process (name
);
1608 /* If an error occurs and we can't start the process, we want to
1609 remove it from the process list. This means that each error
1610 check in create_process doesn't need to call remove_process
1611 itself; it's all taken care of here. */
1612 record_unwind_protect (start_process_unwind
, proc
);
1614 XPROCESS (proc
)->childp
= Qt
;
1615 XPROCESS (proc
)->plist
= Qnil
;
1616 XPROCESS (proc
)->buffer
= buffer
;
1617 XPROCESS (proc
)->sentinel
= Qnil
;
1618 XPROCESS (proc
)->filter
= Qnil
;
1619 XPROCESS (proc
)->filter_multibyte
1620 = buffer_defaults
.enable_multibyte_characters
;
1621 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1623 #ifdef ADAPTIVE_READ_BUFFERING
1624 XPROCESS (proc
)->adaptive_read_buffering
= Vprocess_adaptive_read_buffering
;
1627 /* Make the process marker point into the process buffer (if any). */
1628 if (BUFFERP (buffer
))
1629 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1630 BUF_ZV (XBUFFER (buffer
)),
1631 BUF_ZV_BYTE (XBUFFER (buffer
)));
1634 /* Decide coding systems for communicating with the process. Here
1635 we don't setup the structure coding_system nor pay attention to
1636 unibyte mode. They are done in create_process. */
1638 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1639 Lisp_Object coding_systems
= Qt
;
1640 Lisp_Object val
, *args2
;
1641 struct gcpro gcpro1
, gcpro2
;
1643 val
= Vcoding_system_for_read
;
1646 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1647 args2
[0] = Qstart_process
;
1648 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1649 GCPRO2 (proc
, current_dir
);
1650 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1652 if (CONSP (coding_systems
))
1653 val
= XCAR (coding_systems
);
1654 else if (CONSP (Vdefault_process_coding_system
))
1655 val
= XCAR (Vdefault_process_coding_system
);
1657 XPROCESS (proc
)->decode_coding_system
= val
;
1659 val
= Vcoding_system_for_write
;
1662 if (EQ (coding_systems
, Qt
))
1664 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1665 args2
[0] = Qstart_process
;
1666 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1667 GCPRO2 (proc
, current_dir
);
1668 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1671 if (CONSP (coding_systems
))
1672 val
= XCDR (coding_systems
);
1673 else if (CONSP (Vdefault_process_coding_system
))
1674 val
= XCDR (Vdefault_process_coding_system
);
1676 XPROCESS (proc
)->encode_coding_system
= val
;
1680 /* Make a one member argv with all args concatenated
1681 together separated by a blank. */
1682 len
= SBYTES (program
) + 2;
1683 for (i
= 3; i
< nargs
; i
++)
1687 len
+= SBYTES (tem
) + 1; /* count the blank */
1689 new_argv
= (unsigned char *) alloca (len
);
1690 strcpy (new_argv
, SDATA (program
));
1691 for (i
= 3; i
< nargs
; i
++)
1695 strcat (new_argv
, " ");
1696 strcat (new_argv
, SDATA (tem
));
1698 /* Need to add code here to check for program existence on VMS */
1701 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1703 /* If program file name is not absolute, search our path for it.
1704 Put the name we will really use in TEM. */
1705 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1706 && !(SCHARS (program
) > 1
1707 && IS_DEVICE_SEP (SREF (program
, 1))))
1709 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1712 GCPRO4 (name
, program
, buffer
, current_dir
);
1713 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1716 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1717 tem
= Fexpand_file_name (tem
, Qnil
);
1721 if (!NILP (Ffile_directory_p (program
)))
1722 error ("Specified program for new process is a directory");
1726 /* If program file name starts with /: for quoting a magic name,
1728 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1729 && SREF (tem
, 1) == ':')
1730 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1732 /* Encode the file name and put it in NEW_ARGV.
1733 That's where the child will use it to execute the program. */
1734 tem
= ENCODE_FILE (tem
);
1735 new_argv
[0] = SDATA (tem
);
1737 /* Here we encode arguments by the coding system used for sending
1738 data to the process. We don't support using different coding
1739 systems for encoding arguments and for encoding data sent to the
1742 for (i
= 3; i
< nargs
; i
++)
1746 if (STRING_MULTIBYTE (tem
))
1747 tem
= (code_convert_string_norecord
1748 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1749 new_argv
[i
- 2] = SDATA (tem
);
1751 new_argv
[i
- 2] = 0;
1752 #endif /* not VMS */
1754 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1755 XPROCESS (proc
)->decoding_carryover
= make_number (0);
1756 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1757 XPROCESS (proc
)->encoding_carryover
= make_number (0);
1759 XPROCESS (proc
)->inherit_coding_system_flag
1760 = (NILP (buffer
) || !inherit_process_coding_system
1763 create_process (proc
, (char **) new_argv
, current_dir
);
1765 return unbind_to (count
, proc
);
1768 /* This function is the unwind_protect form for Fstart_process. If
1769 PROC doesn't have its pid set, then we know someone has signaled
1770 an error and the process wasn't started successfully, so we should
1771 remove it from the process list. */
1773 start_process_unwind (proc
)
1776 if (!PROCESSP (proc
))
1779 /* Was PROC started successfully? */
1780 if (XPROCESS (proc
)->pid
<= 0)
1781 remove_process (proc
);
1787 create_process_1 (timer
)
1788 struct atimer
*timer
;
1790 /* Nothing to do. */
1794 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1797 /* Mimic blocking of signals on system V, which doesn't really have it. */
1799 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1800 int sigchld_deferred
;
1803 create_process_sigchld ()
1805 signal (SIGCHLD
, create_process_sigchld
);
1807 sigchld_deferred
= 1;
1813 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1815 create_process (process
, new_argv
, current_dir
)
1816 Lisp_Object process
;
1818 Lisp_Object current_dir
;
1820 int pid
, inchannel
, outchannel
;
1822 #ifdef POSIX_SIGNALS
1825 struct sigaction sigint_action
;
1826 struct sigaction sigquit_action
;
1828 struct sigaction sighup_action
;
1830 #else /* !POSIX_SIGNALS */
1833 SIGTYPE (*sigchld
)();
1836 #endif /* !POSIX_SIGNALS */
1837 /* Use volatile to protect variables from being clobbered by longjmp. */
1838 volatile int forkin
, forkout
;
1839 volatile int pty_flag
= 0;
1841 extern char **environ
;
1844 inchannel
= outchannel
= -1;
1847 if (!NILP (Vprocess_connection_type
))
1848 outchannel
= inchannel
= allocate_pty ();
1852 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1853 /* On most USG systems it does not work to open the pty's tty here,
1854 then close it and reopen it in the child. */
1856 /* Don't let this terminal become our controlling terminal
1857 (in case we don't have one). */
1858 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1860 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1863 report_file_error ("Opening pty", Qnil
);
1864 #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY)
1865 /* In the case that vfork is defined as fork, the parent process
1866 (Emacs) may send some data before the child process completes
1867 tty options setup. So we setup tty before forking. */
1868 child_setup_tty (forkout
);
1869 #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */
1871 forkin
= forkout
= -1;
1872 #endif /* not USG, or USG_SUBTTY_WORKS */
1876 #endif /* HAVE_PTYS */
1879 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1880 report_file_error ("Opening socketpair", Qnil
);
1881 outchannel
= inchannel
= sv
[0];
1882 forkout
= forkin
= sv
[1];
1884 #else /* not SKTPAIR */
1889 report_file_error ("Creating pipe", Qnil
);
1895 emacs_close (inchannel
);
1896 emacs_close (forkout
);
1897 report_file_error ("Creating pipe", Qnil
);
1902 #endif /* not SKTPAIR */
1905 /* Replaced by close_process_descs */
1906 set_exclusive_use (inchannel
);
1907 set_exclusive_use (outchannel
);
1910 /* Stride people say it's a mystery why this is needed
1911 as well as the O_NDELAY, but that it fails without this. */
1912 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1915 ioctl (inchannel
, FIONBIO
, &one
);
1920 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1921 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1924 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1925 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1929 /* Record this as an active process, with its channels.
1930 As a result, child_setup will close Emacs's side of the pipes. */
1931 chan_process
[inchannel
] = process
;
1932 XSETINT (XPROCESS (process
)->infd
, inchannel
);
1933 XSETINT (XPROCESS (process
)->outfd
, outchannel
);
1935 /* Previously we recorded the tty descriptor used in the subprocess.
1936 It was only used for getting the foreground tty process, so now
1937 we just reopen the device (see emacs_get_tty_pgrp) as this is
1938 more portable (see USG_SUBTTY_WORKS above). */
1940 XPROCESS (process
)->pty_flag
= (pty_flag
? Qt
: Qnil
);
1941 XPROCESS (process
)->status
= Qrun
;
1942 setup_process_coding_systems (process
);
1944 /* Delay interrupts until we have a chance to store
1945 the new fork's pid in its process structure */
1946 #ifdef POSIX_SIGNALS
1947 sigemptyset (&blocked
);
1949 sigaddset (&blocked
, SIGCHLD
);
1951 #ifdef HAVE_WORKING_VFORK
1952 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1953 this sets the parent's signal handlers as well as the child's.
1954 So delay all interrupts whose handlers the child might munge,
1955 and record the current handlers so they can be restored later. */
1956 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1957 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1959 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1961 #endif /* HAVE_WORKING_VFORK */
1962 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1963 #else /* !POSIX_SIGNALS */
1967 #else /* not BSD4_1 */
1968 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1969 sigsetmask (sigmask (SIGCHLD
));
1970 #else /* ordinary USG */
1972 sigchld_deferred
= 0;
1973 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1975 #endif /* ordinary USG */
1976 #endif /* not BSD4_1 */
1977 #endif /* SIGCHLD */
1978 #endif /* !POSIX_SIGNALS */
1980 FD_SET (inchannel
, &input_wait_mask
);
1981 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1982 if (inchannel
> max_process_desc
)
1983 max_process_desc
= inchannel
;
1985 /* Until we store the proper pid, enable sigchld_handler
1986 to recognize an unknown pid as standing for this process.
1987 It is very important not to let this `marker' value stay
1988 in the table after this function has returned; if it does
1989 it might cause call-process to hang and subsequent asynchronous
1990 processes to get their return values scrambled. */
1991 XPROCESS (process
)->pid
= -1;
1996 /* child_setup must clobber environ on systems with true vfork.
1997 Protect it from permanent change. */
1998 char **save_environ
= environ
;
2000 current_dir
= ENCODE_FILE (current_dir
);
2005 #endif /* not WINDOWSNT */
2007 int xforkin
= forkin
;
2008 int xforkout
= forkout
;
2010 #if 0 /* This was probably a mistake--it duplicates code later on,
2011 but fails to handle all the cases. */
2012 /* Make sure SIGCHLD is not blocked in the child. */
2013 sigsetmask (SIGEMPTYMASK
);
2016 /* Make the pty be the controlling terminal of the process. */
2018 /* First, disconnect its current controlling terminal. */
2020 /* We tried doing setsid only if pty_flag, but it caused
2021 process_set_signal to fail on SGI when using a pipe. */
2023 /* Make the pty's terminal the controlling terminal. */
2027 /* We ignore the return value
2028 because faith@cs.unc.edu says that is necessary on Linux. */
2029 ioctl (xforkin
, TIOCSCTTY
, 0);
2032 #else /* not HAVE_SETSID */
2034 /* It's very important to call setpgrp here and no time
2035 afterwards. Otherwise, we lose our controlling tty which
2036 is set when we open the pty. */
2039 #endif /* not HAVE_SETSID */
2040 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2041 if (pty_flag
&& xforkin
>= 0)
2044 tcgetattr (xforkin
, &t
);
2046 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2047 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2050 #if defined (NTTYDISC) && defined (TIOCSETD)
2051 if (pty_flag
&& xforkin
>= 0)
2053 /* Use new line discipline. */
2054 int ldisc
= NTTYDISC
;
2055 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2060 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2061 can do TIOCSPGRP only to the process's controlling tty. */
2064 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2065 I can't test it since I don't have 4.3. */
2066 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2067 ioctl (j
, TIOCNOTTY
, 0);
2070 /* In order to get a controlling terminal on some versions
2071 of BSD, it is necessary to put the process in pgrp 0
2072 before it opens the terminal. */
2080 #endif /* TIOCNOTTY */
2082 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2083 /*** There is a suggestion that this ought to be a
2084 conditional on TIOCSPGRP,
2085 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2086 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2087 that system does seem to need this code, even though
2088 both HAVE_SETSID and TIOCSCTTY are defined. */
2089 /* Now close the pty (if we had it open) and reopen it.
2090 This makes the pty the controlling terminal of the subprocess. */
2093 #ifdef SET_CHILD_PTY_PGRP
2094 int pgrp
= getpid ();
2097 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2100 emacs_close (xforkin
);
2101 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2105 emacs_write (1, "Couldn't open the pty terminal ", 31);
2106 emacs_write (1, pty_name
, strlen (pty_name
));
2107 emacs_write (1, "\n", 1);
2111 #ifdef SET_CHILD_PTY_PGRP
2112 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2113 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2116 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2118 #ifdef SETUP_SLAVE_PTY
2123 #endif /* SETUP_SLAVE_PTY */
2125 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2126 Now reenable it in the child, so it will die when we want it to. */
2128 signal (SIGHUP
, SIG_DFL
);
2130 #endif /* HAVE_PTYS */
2132 signal (SIGINT
, SIG_DFL
);
2133 signal (SIGQUIT
, SIG_DFL
);
2135 /* Stop blocking signals in the child. */
2136 #ifdef POSIX_SIGNALS
2137 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2138 #else /* !POSIX_SIGNALS */
2142 #else /* not BSD4_1 */
2143 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2144 sigsetmask (SIGEMPTYMASK
);
2145 #else /* ordinary USG */
2147 signal (SIGCHLD
, sigchld
);
2149 #endif /* ordinary USG */
2150 #endif /* not BSD4_1 */
2151 #endif /* SIGCHLD */
2152 #endif /* !POSIX_SIGNALS */
2154 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2156 child_setup_tty (xforkout
);
2157 #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */
2159 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2160 new_argv
, 1, current_dir
);
2161 #else /* not WINDOWSNT */
2162 child_setup (xforkin
, xforkout
, xforkout
,
2163 new_argv
, 1, current_dir
);
2164 #endif /* not WINDOWSNT */
2166 environ
= save_environ
;
2171 /* This runs in the Emacs process. */
2175 emacs_close (forkin
);
2176 if (forkin
!= forkout
&& forkout
>= 0)
2177 emacs_close (forkout
);
2181 /* vfork succeeded. */
2182 XPROCESS (process
)->pid
= pid
;
2185 register_child (pid
, inchannel
);
2186 #endif /* WINDOWSNT */
2188 /* If the subfork execv fails, and it exits,
2189 this close hangs. I don't know why.
2190 So have an interrupt jar it loose. */
2192 struct atimer
*timer
;
2196 EMACS_SET_SECS_USECS (offset
, 1, 0);
2197 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2200 emacs_close (forkin
);
2202 cancel_atimer (timer
);
2206 if (forkin
!= forkout
&& forkout
>= 0)
2207 emacs_close (forkout
);
2211 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2214 XPROCESS (process
)->tty_name
= Qnil
;
2217 /* Restore the signal state whether vfork succeeded or not.
2218 (We will signal an error, below, if it failed.) */
2219 #ifdef POSIX_SIGNALS
2220 #ifdef HAVE_WORKING_VFORK
2221 /* Restore the parent's signal handlers. */
2222 sigaction (SIGINT
, &sigint_action
, 0);
2223 sigaction (SIGQUIT
, &sigquit_action
, 0);
2225 sigaction (SIGHUP
, &sighup_action
, 0);
2227 #endif /* HAVE_WORKING_VFORK */
2228 /* Stop blocking signals in the parent. */
2229 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2230 #else /* !POSIX_SIGNALS */
2234 #else /* not BSD4_1 */
2235 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2236 sigsetmask (SIGEMPTYMASK
);
2237 #else /* ordinary USG */
2239 signal (SIGCHLD
, sigchld
);
2240 /* Now really handle any of these signals
2241 that came in during this function. */
2242 if (sigchld_deferred
)
2243 kill (getpid (), SIGCHLD
);
2245 #endif /* ordinary USG */
2246 #endif /* not BSD4_1 */
2247 #endif /* SIGCHLD */
2248 #endif /* !POSIX_SIGNALS */
2250 /* Now generate the error if vfork failed. */
2252 report_file_error ("Doing vfork", Qnil
);
2254 #endif /* not VMS */
2259 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2260 The address family of sa is not included in the result. */
2263 conv_sockaddr_to_lisp (sa
, len
)
2264 struct sockaddr
*sa
;
2267 Lisp_Object address
;
2270 register struct Lisp_Vector
*p
;
2272 switch (sa
->sa_family
)
2276 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2277 len
= sizeof (sin
->sin_addr
) + 1;
2278 address
= Fmake_vector (make_number (len
), Qnil
);
2279 p
= XVECTOR (address
);
2280 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2281 cp
= (unsigned char *)&sin
->sin_addr
;
2287 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2288 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2289 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2290 address
= Fmake_vector (make_number (len
), Qnil
);
2291 p
= XVECTOR (address
);
2292 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2293 for (i
= 0; i
< len
; i
++)
2294 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2298 #ifdef HAVE_LOCAL_SOCKETS
2301 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2302 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2303 if (sockun
->sun_path
[i
] == 0)
2305 return make_unibyte_string (sockun
->sun_path
, i
);
2309 len
-= sizeof (sa
->sa_family
);
2310 address
= Fcons (make_number (sa
->sa_family
),
2311 Fmake_vector (make_number (len
), Qnil
));
2312 p
= XVECTOR (XCDR (address
));
2313 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2319 p
->contents
[i
++] = make_number (*cp
++);
2325 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2328 get_lisp_to_sockaddr_size (address
, familyp
)
2329 Lisp_Object address
;
2332 register struct Lisp_Vector
*p
;
2334 if (VECTORP (address
))
2336 p
= XVECTOR (address
);
2340 return sizeof (struct sockaddr_in
);
2343 else if (p
->size
== 9)
2345 *familyp
= AF_INET6
;
2346 return sizeof (struct sockaddr_in6
);
2350 #ifdef HAVE_LOCAL_SOCKETS
2351 else if (STRINGP (address
))
2353 *familyp
= AF_LOCAL
;
2354 return sizeof (struct sockaddr_un
);
2357 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2359 struct sockaddr
*sa
;
2360 *familyp
= XINT (XCAR (address
));
2361 p
= XVECTOR (XCDR (address
));
2362 return p
->size
+ sizeof (sa
->sa_family
);
2367 /* Convert an address object (vector or string) to an internal sockaddr.
2369 The address format has been basically validated by
2370 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2371 it could have come from user data. So if FAMILY is not valid,
2372 we return after zeroing *SA. */
2375 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2377 Lisp_Object address
;
2378 struct sockaddr
*sa
;
2381 register struct Lisp_Vector
*p
;
2382 register unsigned char *cp
= NULL
;
2387 if (VECTORP (address
))
2389 p
= XVECTOR (address
);
2390 if (family
== AF_INET
)
2392 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2393 len
= sizeof (sin
->sin_addr
) + 1;
2394 i
= XINT (p
->contents
[--len
]);
2395 sin
->sin_port
= htons (i
);
2396 cp
= (unsigned char *)&sin
->sin_addr
;
2397 sa
->sa_family
= family
;
2400 else if (family
== AF_INET6
)
2402 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2403 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2404 len
= sizeof (sin6
->sin6_addr
) + 1;
2405 i
= XINT (p
->contents
[--len
]);
2406 sin6
->sin6_port
= htons (i
);
2407 for (i
= 0; i
< len
; i
++)
2408 if (INTEGERP (p
->contents
[i
]))
2410 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2413 sa
->sa_family
= family
;
2418 else if (STRINGP (address
))
2420 #ifdef HAVE_LOCAL_SOCKETS
2421 if (family
== AF_LOCAL
)
2423 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2424 cp
= SDATA (address
);
2425 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2426 sockun
->sun_path
[i
] = *cp
++;
2427 sa
->sa_family
= family
;
2434 p
= XVECTOR (XCDR (address
));
2435 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2438 for (i
= 0; i
< len
; i
++)
2439 if (INTEGERP (p
->contents
[i
]))
2440 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2443 #ifdef DATAGRAM_SOCKETS
2444 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2446 doc
: /* Get the current datagram address associated with PROCESS. */)
2448 Lisp_Object process
;
2452 CHECK_PROCESS (process
);
2454 if (!DATAGRAM_CONN_P (process
))
2457 channel
= XINT (XPROCESS (process
)->infd
);
2458 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2459 datagram_address
[channel
].len
);
2462 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2464 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2465 Returns nil upon error setting address, ADDRESS otherwise. */)
2467 Lisp_Object process
, address
;
2472 CHECK_PROCESS (process
);
2474 if (!DATAGRAM_CONN_P (process
))
2477 channel
= XINT (XPROCESS (process
)->infd
);
2479 len
= get_lisp_to_sockaddr_size (address
, &family
);
2480 if (datagram_address
[channel
].len
!= len
)
2482 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2488 static struct socket_options
{
2489 /* The name of this option. Should be lowercase version of option
2490 name without SO_ prefix. */
2492 /* Option level SOL_... */
2494 /* Option number SO_... */
2496 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2497 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2498 } socket_options
[] =
2500 #ifdef SO_BINDTODEVICE
2501 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2504 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2507 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2510 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2513 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2516 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2519 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2522 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2524 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2527 /* Set option OPT to value VAL on socket S.
2529 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2530 Signals an error if setting a known option fails.
2534 set_socket_option (s
, opt
, val
)
2536 Lisp_Object opt
, val
;
2539 struct socket_options
*sopt
;
2544 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2545 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2546 if (strcmp (name
, sopt
->name
) == 0)
2549 switch (sopt
->opttype
)
2554 optval
= NILP (val
) ? 0 : 1;
2555 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2556 &optval
, sizeof (optval
));
2564 optval
= XINT (val
);
2566 error ("Bad option value for %s", name
);
2567 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2568 &optval
, sizeof (optval
));
2572 #ifdef SO_BINDTODEVICE
2575 char devname
[IFNAMSIZ
+1];
2577 /* This is broken, at least in the Linux 2.4 kernel.
2578 To unbind, the arg must be a zero integer, not the empty string.
2579 This should work on all systems. KFS. 2003-09-23. */
2580 bzero (devname
, sizeof devname
);
2583 char *arg
= (char *) SDATA (val
);
2584 int len
= min (strlen (arg
), IFNAMSIZ
);
2585 bcopy (arg
, devname
, len
);
2587 else if (!NILP (val
))
2588 error ("Bad option value for %s", name
);
2589 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2598 struct linger linger
;
2601 linger
.l_linger
= 0;
2603 linger
.l_linger
= XINT (val
);
2605 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2606 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2607 &linger
, sizeof (linger
));
2617 report_file_error ("Cannot set network option",
2618 Fcons (opt
, Fcons (val
, Qnil
)));
2619 return (1 << sopt
->optbit
);
2623 DEFUN ("set-network-process-option",
2624 Fset_network_process_option
, Sset_network_process_option
,
2626 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2627 See `make-network-process' for a list of options and values.
2628 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2629 OPTION is not a supported option, return nil instead; otherwise return t. */)
2630 (process
, option
, value
, no_error
)
2631 Lisp_Object process
, option
, value
;
2632 Lisp_Object no_error
;
2635 struct Lisp_Process
*p
;
2637 CHECK_PROCESS (process
);
2638 p
= XPROCESS (process
);
2639 if (!NETCONN1_P (p
))
2640 error ("Process is not a network process");
2644 error ("Process is not running");
2646 if (set_socket_option (s
, option
, value
))
2648 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2652 if (NILP (no_error
))
2653 error ("Unknown or unsupported option");
2659 /* A version of request_sigio suitable for a record_unwind_protect. */
2662 unwind_request_sigio (dummy
)
2665 if (interrupt_input
)
2670 /* Create a network stream/datagram client/server process. Treated
2671 exactly like a normal process when reading and writing. Primary
2672 differences are in status display and process deletion. A network
2673 connection has no PID; you cannot signal it. All you can do is
2674 stop/continue it and deactivate/close it via delete-process */
2676 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2678 doc
: /* Create and return a network server or client process.
2680 In Emacs, network connections are represented by process objects, so
2681 input and output work as for subprocesses and `delete-process' closes
2682 a network connection. However, a network process has no process id,
2683 it cannot be signaled, and the status codes are different from normal
2686 Arguments are specified as keyword/argument pairs. The following
2687 arguments are defined:
2689 :name NAME -- NAME is name for process. It is modified if necessary
2692 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2693 with the process. Process output goes at end of that buffer, unless
2694 you specify an output stream or filter function to handle the output.
2695 BUFFER may be also nil, meaning that this process is not associated
2698 :host HOST -- HOST is name of the host to connect to, or its IP
2699 address. The symbol `local' specifies the local host. If specified
2700 for a server process, it must be a valid name or address for the local
2701 host, and only clients connecting to that address will be accepted.
2703 :service SERVICE -- SERVICE is name of the service desired, or an
2704 integer specifying a port number to connect to. If SERVICE is t,
2705 a random port number is selected for the server.
2707 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2708 stream type connection, `datagram' creates a datagram type connection.
2710 :family FAMILY -- FAMILY is the address (and protocol) family for the
2711 service specified by HOST and SERVICE. The default (nil) is to use
2712 whatever address family (IPv4 or IPv6) that is defined for the host
2713 and port number specified by HOST and SERVICE. Other address families
2715 local -- for a local (i.e. UNIX) address specified by SERVICE.
2716 ipv4 -- use IPv4 address family only.
2717 ipv6 -- use IPv6 address family only.
2719 :local ADDRESS -- ADDRESS is the local address used for the connection.
2720 This parameter is ignored when opening a client process. When specified
2721 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2723 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2724 connection. This parameter is ignored when opening a stream server
2725 process. For a datagram server process, it specifies the initial
2726 setting of the remote datagram address. When specified for a client
2727 process, the FAMILY, HOST, and SERVICE args are ignored.
2729 The format of ADDRESS depends on the address family:
2730 - An IPv4 address is represented as an vector of integers [A B C D P]
2731 corresponding to numeric IP address A.B.C.D and port number P.
2732 - A local address is represented as a string with the address in the
2733 local address space.
2734 - An "unsupported family" address is represented by a cons (F . AV)
2735 where F is the family number and AV is a vector containing the socket
2736 address data with one element per address data byte. Do not rely on
2737 this format in portable code, as it may depend on implementation
2738 defined constants, data sizes, and data structure alignment.
2740 :coding CODING -- If CODING is a symbol, it specifies the coding
2741 system used for both reading and writing for this process. If CODING
2742 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2743 ENCODING is used for writing.
2745 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2746 return without waiting for the connection to complete; instead, the
2747 sentinel function will be called with second arg matching "open" (if
2748 successful) or "failed" when the connect completes. Default is to use
2749 a blocking connect (i.e. wait) for stream type connections.
2751 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2752 running when Emacs is exited.
2754 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2755 In the stopped state, a server process does not accept new
2756 connections, and a client process does not handle incoming traffic.
2757 The stopped state is cleared by `continue-process' and set by
2760 :filter FILTER -- Install FILTER as the process filter.
2762 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2763 process filter are multibyte, otherwise they are unibyte.
2764 If this keyword is not specified, the strings are multibyte iff
2765 `default-enable-multibyte-characters' is non-nil.
2767 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2769 :log LOG -- Install LOG as the server process log function. This
2770 function is called when the server accepts a network connection from a
2771 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2772 is the server process, CLIENT is the new process for the connection,
2773 and MESSAGE is a string.
2775 :plist PLIST -- Install PLIST as the new process' initial plist.
2777 :server QLEN -- if QLEN is non-nil, create a server process for the
2778 specified FAMILY, SERVICE, and connection type (stream or datagram).
2779 If QLEN is an integer, it is used as the max. length of the server's
2780 pending connection queue (also known as the backlog); the default
2781 queue length is 5. Default is to create a client process.
2783 The following network options can be specified for this connection:
2785 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2786 :dontroute BOOL -- Only send to directly connected hosts.
2787 :keepalive BOOL -- Send keep-alive messages on network stream.
2788 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2789 :oobinline BOOL -- Place out-of-band data in receive data stream.
2790 :priority INT -- Set protocol defined priority for sent packets.
2791 :reuseaddr BOOL -- Allow reusing a recently used local address
2792 (this is allowed by default for a server process).
2793 :bindtodevice NAME -- bind to interface NAME. Using this may require
2794 special privileges on some systems.
2796 Consult the relevant system programmer's manual pages for more
2797 information on using these options.
2800 A server process will listen for and accept connections from clients.
2801 When a client connection is accepted, a new network process is created
2802 for the connection with the following parameters:
2804 - The client's process name is constructed by concatenating the server
2805 process' NAME and a client identification string.
2806 - If the FILTER argument is non-nil, the client process will not get a
2807 separate process buffer; otherwise, the client's process buffer is a newly
2808 created buffer named after the server process' BUFFER name or process
2809 NAME concatenated with the client identification string.
2810 - The connection type and the process filter and sentinel parameters are
2811 inherited from the server process' TYPE, FILTER and SENTINEL.
2812 - The client process' contact info is set according to the client's
2813 addressing information (typically an IP address and a port number).
2814 - The client process' plist is initialized from the server's plist.
2816 Notice that the FILTER and SENTINEL args are never used directly by
2817 the server process. Also, the BUFFER argument is not used directly by
2818 the server process, but via the optional :log function, accepted (and
2819 failed) connections may be logged in the server process' buffer.
2821 The original argument list, modified with the actual connection
2822 information, is available via the `process-contact' function.
2824 usage: (make-network-process &rest ARGS) */)
2830 Lisp_Object contact
;
2831 struct Lisp_Process
*p
;
2832 #ifdef HAVE_GETADDRINFO
2833 struct addrinfo ai
, *res
, *lres
;
2834 struct addrinfo hints
;
2835 char *portstring
, portbuf
[128];
2836 #else /* HAVE_GETADDRINFO */
2837 struct _emacs_addrinfo
2843 struct sockaddr
*ai_addr
;
2844 struct _emacs_addrinfo
*ai_next
;
2846 #endif /* HAVE_GETADDRINFO */
2847 struct sockaddr_in address_in
;
2848 #ifdef HAVE_LOCAL_SOCKETS
2849 struct sockaddr_un address_un
;
2854 int s
= -1, outch
, inch
;
2855 struct gcpro gcpro1
;
2856 int count
= SPECPDL_INDEX ();
2858 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2860 Lisp_Object name
, buffer
, host
, service
, address
;
2861 Lisp_Object filter
, sentinel
;
2862 int is_non_blocking_client
= 0;
2863 int is_server
= 0, backlog
= 5;
2870 /* Save arguments for process-contact and clone-process. */
2871 contact
= Flist (nargs
, args
);
2875 /* Ensure socket support is loaded if available. */
2876 init_winsock (TRUE
);
2879 /* :type TYPE (nil: stream, datagram */
2880 tem
= Fplist_get (contact
, QCtype
);
2882 socktype
= SOCK_STREAM
;
2883 #ifdef DATAGRAM_SOCKETS
2884 else if (EQ (tem
, Qdatagram
))
2885 socktype
= SOCK_DGRAM
;
2888 error ("Unsupported connection type");
2891 tem
= Fplist_get (contact
, QCserver
);
2894 /* Don't support network sockets when non-blocking mode is
2895 not available, since a blocked Emacs is not useful. */
2896 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2897 error ("Network servers not supported");
2901 backlog
= XINT (tem
);
2905 /* Make QCaddress an alias for :local (server) or :remote (client). */
2906 QCaddress
= is_server
? QClocal
: QCremote
;
2909 if (!is_server
&& socktype
== SOCK_STREAM
2910 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2912 #ifndef NON_BLOCKING_CONNECT
2913 error ("Non-blocking connect not supported");
2915 is_non_blocking_client
= 1;
2919 name
= Fplist_get (contact
, QCname
);
2920 buffer
= Fplist_get (contact
, QCbuffer
);
2921 filter
= Fplist_get (contact
, QCfilter
);
2922 sentinel
= Fplist_get (contact
, QCsentinel
);
2924 CHECK_STRING (name
);
2927 /* Let's handle TERM before things get complicated ... */
2928 host
= Fplist_get (contact
, QChost
);
2929 CHECK_STRING (host
);
2931 service
= Fplist_get (contact
, QCservice
);
2932 if (INTEGERP (service
))
2933 port
= htons ((unsigned short) XINT (service
));
2936 struct servent
*svc_info
;
2937 CHECK_STRING (service
);
2938 svc_info
= getservbyname (SDATA (service
), "tcp");
2940 error ("Unknown service: %s", SDATA (service
));
2941 port
= svc_info
->s_port
;
2944 s
= connect_server (0);
2946 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2947 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2948 send_command (s
, C_DUMB
, 1, 0);
2950 #else /* not TERM */
2952 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2953 ai
.ai_socktype
= socktype
;
2958 /* :local ADDRESS or :remote ADDRESS */
2959 address
= Fplist_get (contact
, QCaddress
);
2960 if (!NILP (address
))
2962 host
= service
= Qnil
;
2964 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2965 error ("Malformed :address");
2966 ai
.ai_family
= family
;
2967 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2968 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2972 /* :family FAMILY -- nil (for Inet), local, or integer. */
2973 tem
= Fplist_get (contact
, QCfamily
);
2976 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
2982 #ifdef HAVE_LOCAL_SOCKETS
2983 else if (EQ (tem
, Qlocal
))
2987 else if (EQ (tem
, Qipv6
))
2990 else if (EQ (tem
, Qipv4
))
2992 else if (INTEGERP (tem
))
2993 family
= XINT (tem
);
2995 error ("Unknown address family");
2997 ai
.ai_family
= family
;
2999 /* :service SERVICE -- string, integer (port number), or t (random port). */
3000 service
= Fplist_get (contact
, QCservice
);
3002 #ifdef HAVE_LOCAL_SOCKETS
3003 if (family
== AF_LOCAL
)
3005 /* Host is not used. */
3007 CHECK_STRING (service
);
3008 bzero (&address_un
, sizeof address_un
);
3009 address_un
.sun_family
= AF_LOCAL
;
3010 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3011 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3012 ai
.ai_addrlen
= sizeof address_un
;
3017 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3018 host
= Fplist_get (contact
, QChost
);
3021 if (EQ (host
, Qlocal
))
3022 host
= build_string ("localhost");
3023 CHECK_STRING (host
);
3026 /* Slow down polling to every ten seconds.
3027 Some kernels have a bug which causes retrying connect to fail
3028 after a connect. Polling can interfere with gethostbyname too. */
3029 #ifdef POLL_FOR_INPUT
3030 if (socktype
== SOCK_STREAM
)
3032 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3033 bind_polling_period (10);
3037 #ifdef HAVE_GETADDRINFO
3038 /* If we have a host, use getaddrinfo to resolve both host and service.
3039 Otherwise, use getservbyname to lookup the service. */
3043 /* SERVICE can either be a string or int.
3044 Convert to a C string for later use by getaddrinfo. */
3045 if (EQ (service
, Qt
))
3047 else if (INTEGERP (service
))
3049 sprintf (portbuf
, "%ld", (long) XINT (service
));
3050 portstring
= portbuf
;
3054 CHECK_STRING (service
);
3055 portstring
= SDATA (service
);
3060 memset (&hints
, 0, sizeof (hints
));
3062 hints
.ai_family
= family
;
3063 hints
.ai_socktype
= socktype
;
3064 hints
.ai_protocol
= 0;
3065 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3067 #ifdef HAVE_GAI_STRERROR
3068 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3070 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3076 #endif /* HAVE_GETADDRINFO */
3078 /* We end up here if getaddrinfo is not defined, or in case no hostname
3079 has been specified (e.g. for a local server process). */
3081 if (EQ (service
, Qt
))
3083 else if (INTEGERP (service
))
3084 port
= htons ((unsigned short) XINT (service
));
3087 struct servent
*svc_info
;
3088 CHECK_STRING (service
);
3089 svc_info
= getservbyname (SDATA (service
),
3090 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3092 error ("Unknown service: %s", SDATA (service
));
3093 port
= svc_info
->s_port
;
3096 bzero (&address_in
, sizeof address_in
);
3097 address_in
.sin_family
= family
;
3098 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3099 address_in
.sin_port
= port
;
3101 #ifndef HAVE_GETADDRINFO
3104 struct hostent
*host_info_ptr
;
3106 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3107 as it may `hang' Emacs for a very long time. */
3110 host_info_ptr
= gethostbyname (SDATA (host
));
3115 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3116 host_info_ptr
->h_length
);
3117 family
= host_info_ptr
->h_addrtype
;
3118 address_in
.sin_family
= family
;
3121 /* Attempt to interpret host as numeric inet address */
3123 IN_ADDR numeric_addr
;
3124 numeric_addr
= inet_addr ((char *) SDATA (host
));
3125 if (NUMERIC_ADDR_ERROR
)
3126 error ("Unknown host \"%s\"", SDATA (host
));
3128 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3129 sizeof (address_in
.sin_addr
));
3133 #endif /* not HAVE_GETADDRINFO */
3135 ai
.ai_family
= family
;
3136 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3137 ai
.ai_addrlen
= sizeof address_in
;
3141 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3142 when connect is interrupted. So let's not let it get interrupted.
3143 Note we do not turn off polling, because polling is only used
3144 when not interrupt_input, and thus not normally used on the systems
3145 which have this bug. On systems which use polling, there's no way
3146 to quit if polling is turned off. */
3148 && !is_server
&& socktype
== SOCK_STREAM
)
3150 /* Comment from KFS: The original open-network-stream code
3151 didn't unwind protect this, but it seems like the proper
3152 thing to do. In any case, I don't see how it could harm to
3153 do this -- and it makes cleanup (using unbind_to) easier. */
3154 record_unwind_protect (unwind_request_sigio
, Qnil
);
3158 /* Do this in case we never enter the for-loop below. */
3159 count1
= SPECPDL_INDEX ();
3162 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3168 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3175 #ifdef DATAGRAM_SOCKETS
3176 if (!is_server
&& socktype
== SOCK_DGRAM
)
3178 #endif /* DATAGRAM_SOCKETS */
3180 #ifdef NON_BLOCKING_CONNECT
3181 if (is_non_blocking_client
)
3184 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3186 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3198 /* Make us close S if quit. */
3199 record_unwind_protect (close_file_unwind
, make_number (s
));
3201 /* Parse network options in the arg list.
3202 We simply ignore anything which isn't a known option (including other keywords).
3203 An error is signalled if setting a known option fails. */
3204 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3205 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3209 /* Configure as a server socket. */
3211 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3212 explicit :reuseaddr key to override this. */
3213 #ifdef HAVE_LOCAL_SOCKETS
3214 if (family
!= AF_LOCAL
)
3216 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3219 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3220 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3223 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3224 report_file_error ("Cannot bind server socket", Qnil
);
3226 #ifdef HAVE_GETSOCKNAME
3227 if (EQ (service
, Qt
))
3229 struct sockaddr_in sa1
;
3230 int len1
= sizeof (sa1
);
3231 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3233 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3234 service
= make_number (ntohs (sa1
.sin_port
));
3235 contact
= Fplist_put (contact
, QCservice
, service
);
3240 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3241 report_file_error ("Cannot listen on server socket", Qnil
);
3249 /* This turns off all alarm-based interrupts; the
3250 bind_polling_period call above doesn't always turn all the
3251 short-interval ones off, especially if interrupt_input is
3254 It'd be nice to be able to control the connect timeout
3255 though. Would non-blocking connect calls be portable?
3257 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3259 turn_on_atimers (0);
3261 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3264 turn_on_atimers (1);
3266 if (ret
== 0 || xerrno
== EISCONN
)
3268 /* The unwind-protect will be discarded afterwards.
3269 Likewise for immediate_quit. */
3273 #ifdef NON_BLOCKING_CONNECT
3275 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3279 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3287 /* Discard the unwind protect closing S. */
3288 specpdl_ptr
= specpdl
+ count1
;
3292 if (xerrno
== EINTR
)
3298 #ifdef DATAGRAM_SOCKETS
3299 if (socktype
== SOCK_DGRAM
)
3301 if (datagram_address
[s
].sa
)
3303 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3304 datagram_address
[s
].len
= lres
->ai_addrlen
;
3308 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3309 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3312 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3313 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3314 conv_lisp_to_sockaddr (rfamily
, remote
,
3315 datagram_address
[s
].sa
, rlen
);
3319 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3322 contact
= Fplist_put (contact
, QCaddress
,
3323 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3324 #ifdef HAVE_GETSOCKNAME
3327 struct sockaddr_in sa1
;
3328 int len1
= sizeof (sa1
);
3329 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3330 contact
= Fplist_put (contact
, QClocal
,
3331 conv_sockaddr_to_lisp (&sa1
, len1
));
3336 #ifdef HAVE_GETADDRINFO
3343 /* Discard the unwind protect for closing S, if any. */
3344 specpdl_ptr
= specpdl
+ count1
;
3346 /* Unwind bind_polling_period and request_sigio. */
3347 unbind_to (count
, Qnil
);
3351 /* If non-blocking got this far - and failed - assume non-blocking is
3352 not supported after all. This is probably a wrong assumption, but
3353 the normal blocking calls to open-network-stream handles this error
3355 if (is_non_blocking_client
)
3360 report_file_error ("make server process failed", contact
);
3362 report_file_error ("make client process failed", contact
);
3365 #endif /* not TERM */
3371 buffer
= Fget_buffer_create (buffer
);
3372 proc
= make_process (name
);
3374 chan_process
[inch
] = proc
;
3377 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3380 fcntl (inch
, F_SETFL
, O_NDELAY
);
3384 p
= XPROCESS (proc
);
3386 p
->childp
= contact
;
3387 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3390 p
->sentinel
= sentinel
;
3392 p
->filter_multibyte
= buffer_defaults
.enable_multibyte_characters
;
3393 /* Override the above only if :filter-multibyte is specified. */
3394 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3395 p
->filter_multibyte
= Fplist_get (contact
, QCfilter_multibyte
);
3396 p
->log
= Fplist_get (contact
, QClog
);
3397 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3398 p
->kill_without_query
= Qt
;
3399 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3402 XSETINT (p
->infd
, inch
);
3403 XSETINT (p
->outfd
, outch
);
3404 if (is_server
&& socktype
== SOCK_STREAM
)
3405 p
->status
= Qlisten
;
3407 /* Make the process marker point into the process buffer (if any). */
3408 if (BUFFERP (buffer
))
3409 set_marker_both (p
->mark
, buffer
,
3410 BUF_ZV (XBUFFER (buffer
)),
3411 BUF_ZV_BYTE (XBUFFER (buffer
)));
3413 #ifdef NON_BLOCKING_CONNECT
3414 if (is_non_blocking_client
)
3416 /* We may get here if connect did succeed immediately. However,
3417 in that case, we still need to signal this like a non-blocking
3419 p
->status
= Qconnect
;
3420 if (!FD_ISSET (inch
, &connect_wait_mask
))
3422 FD_SET (inch
, &connect_wait_mask
);
3423 num_pending_connects
++;
3428 /* A server may have a client filter setting of Qt, but it must
3429 still listen for incoming connects unless it is stopped. */
3430 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3431 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3433 FD_SET (inch
, &input_wait_mask
);
3434 FD_SET (inch
, &non_keyboard_wait_mask
);
3437 if (inch
> max_process_desc
)
3438 max_process_desc
= inch
;
3440 tem
= Fplist_member (contact
, QCcoding
);
3441 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3442 tem
= Qnil
; /* No error message (too late!). */
3445 /* Setup coding systems for communicating with the network stream. */
3446 struct gcpro gcpro1
;
3447 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3448 Lisp_Object coding_systems
= Qt
;
3449 Lisp_Object args
[5], val
;
3453 val
= XCAR (XCDR (tem
));
3457 else if (!NILP (Vcoding_system_for_read
))
3458 val
= Vcoding_system_for_read
;
3459 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3460 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3461 /* We dare not decode end-of-line format by setting VAL to
3462 Qraw_text, because the existing Emacs Lisp libraries
3463 assume that they receive bare code including a sequene of
3468 if (NILP (host
) || NILP (service
))
3469 coding_systems
= Qnil
;
3472 args
[0] = Qopen_network_stream
, args
[1] = name
,
3473 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3475 coding_systems
= Ffind_operation_coding_system (5, args
);
3478 if (CONSP (coding_systems
))
3479 val
= XCAR (coding_systems
);
3480 else if (CONSP (Vdefault_process_coding_system
))
3481 val
= XCAR (Vdefault_process_coding_system
);
3485 p
->decode_coding_system
= val
;
3489 val
= XCAR (XCDR (tem
));
3493 else if (!NILP (Vcoding_system_for_write
))
3494 val
= Vcoding_system_for_write
;
3495 else if (NILP (current_buffer
->enable_multibyte_characters
))
3499 if (EQ (coding_systems
, Qt
))
3501 if (NILP (host
) || NILP (service
))
3502 coding_systems
= Qnil
;
3505 args
[0] = Qopen_network_stream
, args
[1] = name
,
3506 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3508 coding_systems
= Ffind_operation_coding_system (5, args
);
3512 if (CONSP (coding_systems
))
3513 val
= XCDR (coding_systems
);
3514 else if (CONSP (Vdefault_process_coding_system
))
3515 val
= XCDR (Vdefault_process_coding_system
);
3519 p
->encode_coding_system
= val
;
3521 setup_process_coding_systems (proc
);
3523 p
->decoding_buf
= make_uninit_string (0);
3524 p
->decoding_carryover
= make_number (0);
3525 p
->encoding_buf
= make_uninit_string (0);
3526 p
->encoding_carryover
= make_number (0);
3528 p
->inherit_coding_system_flag
3529 = (!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
3535 #endif /* HAVE_SOCKETS */
3538 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3541 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3542 doc
: /* Return an alist of all network interfaces and their network address.
3543 Each element is a cons, the car of which is a string containing the
3544 interface name, and the cdr is the network address in internal
3545 format; see the description of ADDRESS in `make-network-process'. */)
3548 struct ifconf ifconf
;
3549 struct ifreq
*ifreqs
= NULL
;
3554 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3560 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3561 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3568 ifconf
.ifc_len
= buf_size
;
3569 ifconf
.ifc_req
= ifreqs
;
3570 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3576 if (ifconf
.ifc_len
== buf_size
)
3580 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3583 while (--ifaces
>= 0)
3585 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3586 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3587 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3589 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3590 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3591 res
= Fcons (Fcons (build_string (namebuf
),
3592 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3593 sizeof (struct sockaddr
))),
3599 #endif /* SIOCGIFCONF */
3601 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3608 static struct ifflag_def ifflag_table
[] = {
3612 #ifdef IFF_BROADCAST
3613 { IFF_BROADCAST
, "broadcast" },
3616 { IFF_DEBUG
, "debug" },
3619 { IFF_LOOPBACK
, "loopback" },
3621 #ifdef IFF_POINTOPOINT
3622 { IFF_POINTOPOINT
, "pointopoint" },
3625 { IFF_RUNNING
, "running" },
3628 { IFF_NOARP
, "noarp" },
3631 { IFF_PROMISC
, "promisc" },
3633 #ifdef IFF_NOTRAILERS
3634 { IFF_NOTRAILERS
, "notrailers" },
3637 { IFF_ALLMULTI
, "allmulti" },
3640 { IFF_MASTER
, "master" },
3643 { IFF_SLAVE
, "slave" },
3645 #ifdef IFF_MULTICAST
3646 { IFF_MULTICAST
, "multicast" },
3649 { IFF_PORTSEL
, "portsel" },
3651 #ifdef IFF_AUTOMEDIA
3652 { IFF_AUTOMEDIA
, "automedia" },
3655 { IFF_DYNAMIC
, "dynamic" },
3658 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3661 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3664 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3667 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3670 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3675 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3676 doc
: /* Return information about network interface named IFNAME.
3677 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3678 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3679 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3680 FLAGS is the current flags of the interface. */)
3685 Lisp_Object res
= Qnil
;
3690 CHECK_STRING (ifname
);
3692 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3693 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3695 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3700 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3701 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3703 int flags
= rq
.ifr_flags
;
3704 struct ifflag_def
*fp
;
3708 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3710 if (flags
& fp
->flag_bit
)
3712 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3713 flags
-= fp
->flag_bit
;
3716 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3718 if (flags
& (1 << fnum
))
3720 elt
= Fcons (make_number (fnum
), elt
);
3725 res
= Fcons (elt
, res
);
3728 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3729 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3731 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3732 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3736 for (n
= 0; n
< 6; n
++)
3737 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3738 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3741 res
= Fcons (elt
, res
);
3744 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3745 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3748 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3749 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3751 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3755 res
= Fcons (elt
, res
);
3758 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3759 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3762 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3765 res
= Fcons (elt
, res
);
3768 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3769 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3772 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3775 res
= Fcons (elt
, res
);
3779 return any
? res
: Qnil
;
3782 #endif /* HAVE_SOCKETS */
3784 /* Turn off input and output for process PROC. */
3787 deactivate_process (proc
)
3790 register int inchannel
, outchannel
;
3791 register struct Lisp_Process
*p
= XPROCESS (proc
);
3793 inchannel
= XINT (p
->infd
);
3794 outchannel
= XINT (p
->outfd
);
3796 #ifdef ADAPTIVE_READ_BUFFERING
3797 if (XINT (p
->read_output_delay
) > 0)
3799 if (--process_output_delay_count
< 0)
3800 process_output_delay_count
= 0;
3801 XSETINT (p
->read_output_delay
, 0);
3802 p
->read_output_skip
= Qnil
;
3808 /* Beware SIGCHLD hereabouts. */
3809 flush_pending_output (inchannel
);
3812 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3813 sys$
dassgn (outchannel
);
3814 vs
= get_vms_process_pointer (p
->pid
);
3816 give_back_vms_process_stuff (vs
);
3819 emacs_close (inchannel
);
3820 if (outchannel
>= 0 && outchannel
!= inchannel
)
3821 emacs_close (outchannel
);
3824 XSETINT (p
->infd
, -1);
3825 XSETINT (p
->outfd
, -1);
3826 #ifdef DATAGRAM_SOCKETS
3827 if (DATAGRAM_CHAN_P (inchannel
))
3829 xfree (datagram_address
[inchannel
].sa
);
3830 datagram_address
[inchannel
].sa
= 0;
3831 datagram_address
[inchannel
].len
= 0;
3834 chan_process
[inchannel
] = Qnil
;
3835 FD_CLR (inchannel
, &input_wait_mask
);
3836 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3837 #ifdef NON_BLOCKING_CONNECT
3838 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3840 FD_CLR (inchannel
, &connect_wait_mask
);
3841 if (--num_pending_connects
< 0)
3845 if (inchannel
== max_process_desc
)
3848 /* We just closed the highest-numbered process input descriptor,
3849 so recompute the highest-numbered one now. */
3850 max_process_desc
= 0;
3851 for (i
= 0; i
< MAXDESC
; i
++)
3852 if (!NILP (chan_process
[i
]))
3853 max_process_desc
= i
;
3858 /* Close all descriptors currently in use for communication
3859 with subprocess. This is used in a newly-forked subprocess
3860 to get rid of irrelevant descriptors. */
3863 close_process_descs ()
3867 for (i
= 0; i
< MAXDESC
; i
++)
3869 Lisp_Object process
;
3870 process
= chan_process
[i
];
3871 if (!NILP (process
))
3873 int in
= XINT (XPROCESS (process
)->infd
);
3874 int out
= XINT (XPROCESS (process
)->outfd
);
3877 if (out
>= 0 && in
!= out
)
3884 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3886 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3887 It is read into the process' buffers or given to their filter functions.
3888 Non-nil arg PROCESS means do not return until some output has been received
3891 Non-nil second arg SECONDS and third arg MILLISEC are number of
3892 seconds and milliseconds to wait; return after that much time whether
3893 or not there is input. If SECONDS is a floating point number,
3894 it specifies a fractional number of seconds to wait.
3896 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3897 from PROCESS, suspending reading output from other processes.
3898 If JUST-THIS-ONE is an integer, don't run any timers either.
3899 Return non-nil iff we received any output before the timeout expired. */)
3900 (process
, seconds
, millisec
, just_this_one
)
3901 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
3903 int secs
, usecs
= 0;
3905 if (! NILP (process
))
3906 CHECK_PROCESS (process
);
3908 just_this_one
= Qnil
;
3910 if (!NILP (seconds
))
3912 if (INTEGERP (seconds
))
3913 secs
= XINT (seconds
);
3914 else if (FLOATP (seconds
))
3916 double timeout
= XFLOAT_DATA (seconds
);
3917 secs
= (int) timeout
;
3918 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3921 wrong_type_argument (Qnumberp
, seconds
);
3923 if (INTEGERP (millisec
))
3926 usecs
+= XINT (millisec
) * 1000;
3927 carry
= usecs
/ 1000000;
3929 if ((usecs
-= carry
* 1000000) < 0)
3936 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3937 secs
= -1, usecs
= 0;
3940 secs
= NILP (process
) ? -1 : 0;
3943 (wait_reading_process_output (secs
, usecs
, 0, 0,
3945 !NILP (process
) ? XPROCESS (process
) : NULL
,
3946 NILP (just_this_one
) ? 0 :
3947 !INTEGERP (just_this_one
) ? 1 : -1)
3951 /* Accept a connection for server process SERVER on CHANNEL. */
3953 static int connect_counter
= 0;
3956 server_accept_connection (server
, channel
)
3960 Lisp_Object proc
, caller
, name
, buffer
;
3961 Lisp_Object contact
, host
, service
;
3962 struct Lisp_Process
*ps
= XPROCESS (server
);
3963 struct Lisp_Process
*p
;
3967 struct sockaddr_in in
;
3969 struct sockaddr_in6 in6
;
3971 #ifdef HAVE_LOCAL_SOCKETS
3972 struct sockaddr_un un
;
3975 int len
= sizeof saddr
;
3977 s
= accept (channel
, &saddr
.sa
, &len
);
3986 if (code
== EWOULDBLOCK
)
3990 if (!NILP (ps
->log
))
3991 call3 (ps
->log
, server
, Qnil
,
3992 concat3 (build_string ("accept failed with code"),
3993 Fnumber_to_string (make_number (code
)),
3994 build_string ("\n")));
4000 /* Setup a new process to handle the connection. */
4002 /* Generate a unique identification of the caller, and build contact
4003 information for this process. */
4006 switch (saddr
.sa
.sa_family
)
4010 Lisp_Object args
[5];
4011 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4012 args
[0] = build_string ("%d.%d.%d.%d");
4013 args
[1] = make_number (*ip
++);
4014 args
[2] = make_number (*ip
++);
4015 args
[3] = make_number (*ip
++);
4016 args
[4] = make_number (*ip
++);
4017 host
= Fformat (5, args
);
4018 service
= make_number (ntohs (saddr
.in
.sin_port
));
4020 args
[0] = build_string (" <%s:%d>");
4023 caller
= Fformat (3, args
);
4030 Lisp_Object args
[9];
4031 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4033 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4034 for (i
= 0; i
< 8; i
++)
4035 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4036 host
= Fformat (9, args
);
4037 service
= make_number (ntohs (saddr
.in
.sin_port
));
4039 args
[0] = build_string (" <[%s]:%d>");
4042 caller
= Fformat (3, args
);
4047 #ifdef HAVE_LOCAL_SOCKETS
4051 caller
= Fnumber_to_string (make_number (connect_counter
));
4052 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
4056 /* Create a new buffer name for this process if it doesn't have a
4057 filter. The new buffer name is based on the buffer name or
4058 process name of the server process concatenated with the caller
4061 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4065 buffer
= ps
->buffer
;
4067 buffer
= Fbuffer_name (buffer
);
4072 buffer
= concat2 (buffer
, caller
);
4073 buffer
= Fget_buffer_create (buffer
);
4077 /* Generate a unique name for the new server process. Combine the
4078 server process name with the caller identification. */
4080 name
= concat2 (ps
->name
, caller
);
4081 proc
= make_process (name
);
4083 chan_process
[s
] = proc
;
4086 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4089 fcntl (s
, F_SETFL
, O_NDELAY
);
4093 p
= XPROCESS (proc
);
4095 /* Build new contact information for this setup. */
4096 contact
= Fcopy_sequence (ps
->childp
);
4097 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4098 contact
= Fplist_put (contact
, QChost
, host
);
4099 if (!NILP (service
))
4100 contact
= Fplist_put (contact
, QCservice
, service
);
4101 contact
= Fplist_put (contact
, QCremote
,
4102 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4103 #ifdef HAVE_GETSOCKNAME
4105 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4106 contact
= Fplist_put (contact
, QClocal
,
4107 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4110 p
->childp
= contact
;
4111 p
->plist
= Fcopy_sequence (ps
->plist
);
4114 p
->sentinel
= ps
->sentinel
;
4115 p
->filter
= ps
->filter
;
4118 XSETINT (p
->infd
, s
);
4119 XSETINT (p
->outfd
, s
);
4122 /* Client processes for accepted connections are not stopped initially. */
4123 if (!EQ (p
->filter
, Qt
))
4125 FD_SET (s
, &input_wait_mask
);
4126 FD_SET (s
, &non_keyboard_wait_mask
);
4129 if (s
> max_process_desc
)
4130 max_process_desc
= s
;
4132 /* Setup coding system for new process based on server process.
4133 This seems to be the proper thing to do, as the coding system
4134 of the new process should reflect the settings at the time the
4135 server socket was opened; not the current settings. */
4137 p
->decode_coding_system
= ps
->decode_coding_system
;
4138 p
->encode_coding_system
= ps
->encode_coding_system
;
4139 setup_process_coding_systems (proc
);
4141 p
->decoding_buf
= make_uninit_string (0);
4142 p
->decoding_carryover
= make_number (0);
4143 p
->encoding_buf
= make_uninit_string (0);
4144 p
->encoding_carryover
= make_number (0);
4146 p
->inherit_coding_system_flag
4147 = (NILP (buffer
) ? Qnil
: ps
->inherit_coding_system_flag
);
4149 if (!NILP (ps
->log
))
4150 call3 (ps
->log
, server
, proc
,
4151 concat3 (build_string ("accept from "),
4152 (STRINGP (host
) ? host
: build_string ("-")),
4153 build_string ("\n")));
4155 if (!NILP (p
->sentinel
))
4156 exec_sentinel (proc
,
4157 concat3 (build_string ("open from "),
4158 (STRINGP (host
) ? host
: build_string ("-")),
4159 build_string ("\n")));
4162 /* This variable is different from waiting_for_input in keyboard.c.
4163 It is used to communicate to a lisp process-filter/sentinel (via the
4164 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4165 for user-input when that process-filter was called.
4166 waiting_for_input cannot be used as that is by definition 0 when
4167 lisp code is being evalled.
4168 This is also used in record_asynch_buffer_change.
4169 For that purpose, this must be 0
4170 when not inside wait_reading_process_output. */
4171 static int waiting_for_user_input_p
;
4174 wait_reading_process_output_unwind (data
)
4177 waiting_for_user_input_p
= XINT (data
);
4181 /* This is here so breakpoints can be put on it. */
4183 wait_reading_process_output_1 ()
4187 /* Use a wrapper around select to work around a bug in gdb 5.3.
4188 Normally, the wrapper is optimzed away by inlining.
4190 If emacs is stopped inside select, the gdb backtrace doesn't
4191 show the function which called select, so it is practically
4192 impossible to step through wait_reading_process_output. */
4196 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4198 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4201 return select (n
, rfd
, wfd
, xfd
, tmo
);
4203 #define select select_wrapper
4206 /* Read and dispose of subprocess output while waiting for timeout to
4207 elapse and/or keyboard input to be available.
4210 timeout in seconds, or
4211 zero for no limit, or
4212 -1 means gobble data immediately available but don't wait for any.
4215 an additional duration to wait, measured in microseconds.
4216 If this is nonzero and time_limit is 0, then the timeout
4217 consists of MICROSECS only.
4219 READ_KBD is a lisp value:
4220 0 to ignore keyboard input, or
4221 1 to return when input is available, or
4222 -1 meaning caller will actually read the input, so don't throw to
4223 the quit handler, or
4225 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4226 output that arrives.
4228 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4229 (and gobble terminal input into the buffer if any arrives).
4231 If WAIT_PROC is specified, wait until something arrives from that
4232 process. The return value is true iff we read some input from
4235 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4236 (suspending output from other processes). A negative value
4237 means don't run any timers either.
4239 If WAIT_PROC is specified, then the function returns true iff we
4240 received input from that process before the timeout elapsed.
4241 Otherwise, return true iff we received input from any process. */
4244 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4245 wait_for_cell
, wait_proc
, just_wait_proc
)
4246 int time_limit
, microsecs
, read_kbd
, do_display
;
4247 Lisp_Object wait_for_cell
;
4248 struct Lisp_Process
*wait_proc
;
4251 register int channel
, nfds
;
4252 SELECT_TYPE Available
;
4253 #ifdef NON_BLOCKING_CONNECT
4254 SELECT_TYPE Connecting
;
4257 int check_delay
, no_avail
;
4260 EMACS_TIME timeout
, end_time
;
4261 int wait_channel
= -1;
4262 int got_some_input
= 0;
4263 int count
= SPECPDL_INDEX ();
4265 FD_ZERO (&Available
);
4266 #ifdef NON_BLOCKING_CONNECT
4267 FD_ZERO (&Connecting
);
4270 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4271 if (wait_proc
!= NULL
)
4272 wait_channel
= XINT (wait_proc
->infd
);
4274 record_unwind_protect (wait_reading_process_output_unwind
,
4275 make_number (waiting_for_user_input_p
));
4276 waiting_for_user_input_p
= read_kbd
;
4278 /* Since we may need to wait several times,
4279 compute the absolute time to return at. */
4280 if (time_limit
|| microsecs
)
4282 EMACS_GET_TIME (end_time
);
4283 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4284 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4286 #ifdef POLL_INTERRUPTED_SYS_CALL
4287 /* AlainF 5-Jul-1996
4288 HP-UX 10.10 seem to have problems with signals coming in
4289 Causes "poll: interrupted system call" messages when Emacs is run
4291 Turn off periodic alarms (in case they are in use),
4292 and then turn off any other atimers. */
4294 turn_on_atimers (0);
4295 #endif /* POLL_INTERRUPTED_SYS_CALL */
4299 int timeout_reduced_for_timers
= 0;
4301 /* If calling from keyboard input, do not quit
4302 since we want to return C-g as an input character.
4303 Otherwise, do pending quit if requested. */
4307 else if (interrupt_input_pending
)
4308 handle_async_input ();
4311 /* Exit now if the cell we're waiting for became non-nil. */
4312 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4315 /* Compute time from now till when time limit is up */
4316 /* Exit if already run out */
4317 if (time_limit
== -1)
4319 /* -1 specified for timeout means
4320 gobble output available now
4321 but don't wait at all. */
4323 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4325 else if (time_limit
|| microsecs
)
4327 EMACS_GET_TIME (timeout
);
4328 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4329 if (EMACS_TIME_NEG_P (timeout
))
4334 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4337 /* Normally we run timers here.
4338 But not if wait_for_cell; in those cases,
4339 the wait is supposed to be short,
4340 and those callers cannot handle running arbitrary Lisp code here. */
4341 if (NILP (wait_for_cell
)
4342 && just_wait_proc
>= 0)
4344 EMACS_TIME timer_delay
;
4348 int old_timers_run
= timers_run
;
4349 struct buffer
*old_buffer
= current_buffer
;
4351 timer_delay
= timer_check (1);
4353 /* If a timer has run, this might have changed buffers
4354 an alike. Make read_key_sequence aware of that. */
4355 if (timers_run
!= old_timers_run
4356 && old_buffer
!= current_buffer
4357 && waiting_for_user_input_p
== -1)
4358 record_asynch_buffer_change ();
4360 if (timers_run
!= old_timers_run
&& do_display
)
4361 /* We must retry, since a timer may have requeued itself
4362 and that could alter the time_delay. */
4363 redisplay_preserve_echo_area (9);
4367 while (!detect_input_pending ());
4369 /* If there is unread keyboard input, also return. */
4371 && requeued_events_pending_p ())
4374 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4376 EMACS_TIME difference
;
4377 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4378 if (EMACS_TIME_NEG_P (difference
))
4380 timeout
= timer_delay
;
4381 timeout_reduced_for_timers
= 1;
4384 /* If time_limit is -1, we are not going to wait at all. */
4385 else if (time_limit
!= -1)
4387 /* This is so a breakpoint can be put here. */
4388 wait_reading_process_output_1 ();
4392 /* Cause C-g and alarm signals to take immediate action,
4393 and cause input available signals to zero out timeout.
4395 It is important that we do this before checking for process
4396 activity. If we get a SIGCHLD after the explicit checks for
4397 process activity, timeout is the only way we will know. */
4399 set_waiting_for_input (&timeout
);
4401 /* If status of something has changed, and no input is
4402 available, notify the user of the change right away. After
4403 this explicit check, we'll let the SIGCHLD handler zap
4404 timeout to get our attention. */
4405 if (update_tick
!= process_tick
&& do_display
)
4408 #ifdef NON_BLOCKING_CONNECT
4412 Atemp
= input_wait_mask
;
4414 /* On Mac OS X 10.0, the SELECT system call always says input is
4415 present (for reading) at stdin, even when none is. This
4416 causes the call to SELECT below to return 1 and
4417 status_notify not to be called. As a result output of
4418 subprocesses are incorrectly discarded.
4422 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4424 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4425 if ((select (max (max_process_desc
, max_keyboard_desc
) + 1,
4427 #ifdef NON_BLOCKING_CONNECT
4428 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4432 (SELECT_TYPE
*)0, &timeout
)
4435 /* It's okay for us to do this and then continue with
4436 the loop, since timeout has already been zeroed out. */
4437 clear_waiting_for_input ();
4438 status_notify (NULL
);
4442 /* Don't wait for output from a non-running process. Just
4443 read whatever data has already been received. */
4444 if (wait_proc
&& wait_proc
->raw_status_new
)
4445 update_status (wait_proc
);
4447 && ! EQ (wait_proc
->status
, Qrun
)
4448 && ! EQ (wait_proc
->status
, Qconnect
))
4450 int nread
, total_nread
= 0;
4452 clear_waiting_for_input ();
4453 XSETPROCESS (proc
, wait_proc
);
4455 /* Read data from the process, until we exhaust it. */
4456 while (XINT (wait_proc
->infd
) >= 0)
4458 nread
= read_process_output (proc
, XINT (wait_proc
->infd
));
4464 total_nread
+= nread
;
4466 else if (nread
== -1 && EIO
== errno
)
4470 else if (nread
== -1 && EAGAIN
== errno
)
4474 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4478 if (total_nread
> 0 && do_display
)
4479 redisplay_preserve_echo_area (10);
4484 /* Wait till there is something to do */
4486 if (wait_proc
&& just_wait_proc
)
4488 if (XINT (wait_proc
->infd
) < 0) /* Terminated */
4490 FD_SET (XINT (wait_proc
->infd
), &Available
);
4492 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4494 else if (!NILP (wait_for_cell
))
4496 Available
= non_process_wait_mask
;
4498 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4503 Available
= non_keyboard_wait_mask
;
4505 Available
= input_wait_mask
;
4506 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4507 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4510 /* If frame size has changed or the window is newly mapped,
4511 redisplay now, before we start to wait. There is a race
4512 condition here; if a SIGIO arrives between now and the select
4513 and indicates that a frame is trashed, the select may block
4514 displaying a trashed screen. */
4515 if (frame_garbaged
&& do_display
)
4517 clear_waiting_for_input ();
4518 redisplay_preserve_echo_area (11);
4520 set_waiting_for_input (&timeout
);
4524 if (read_kbd
&& detect_input_pending ())
4531 #ifdef NON_BLOCKING_CONNECT
4533 Connecting
= connect_wait_mask
;
4536 #ifdef ADAPTIVE_READ_BUFFERING
4537 /* Set the timeout for adaptive read buffering if any
4538 process has non-nil read_output_skip and non-zero
4539 read_output_delay, and we are not reading output for a
4540 specific wait_channel. It is not executed if
4541 Vprocess_adaptive_read_buffering is nil. */
4542 if (process_output_skip
&& check_delay
> 0)
4544 int usecs
= EMACS_USECS (timeout
);
4545 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4546 usecs
= READ_OUTPUT_DELAY_MAX
;
4547 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4549 proc
= chan_process
[channel
];
4552 /* Find minimum non-zero read_output_delay among the
4553 processes with non-nil read_output_skip. */
4554 if (XINT (XPROCESS (proc
)->read_output_delay
) > 0)
4557 if (NILP (XPROCESS (proc
)->read_output_skip
))
4559 FD_CLR (channel
, &Available
);
4560 XPROCESS (proc
)->read_output_skip
= Qnil
;
4561 if (XINT (XPROCESS (proc
)->read_output_delay
) < usecs
)
4562 usecs
= XINT (XPROCESS (proc
)->read_output_delay
);
4565 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4566 process_output_skip
= 0;
4570 nfds
= select (max (max_process_desc
, max_keyboard_desc
) + 1,
4572 #ifdef NON_BLOCKING_CONNECT
4573 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4577 (SELECT_TYPE
*)0, &timeout
);
4582 /* Make C-g and alarm signals set flags again */
4583 clear_waiting_for_input ();
4585 /* If we woke up due to SIGWINCH, actually change size now. */
4586 do_pending_window_change (0);
4588 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4589 /* We wanted the full specified time, so return now. */
4593 if (xerrno
== EINTR
)
4596 /* Ultrix select seems to return ENOMEM when it is
4597 interrupted. Treat it just like EINTR. Bleah. Note
4598 that we want to test for the "ultrix" CPP symbol, not
4599 "__ultrix__"; the latter is only defined under GCC, but
4600 not by DEC's bundled CC. -JimB */
4601 else if (xerrno
== ENOMEM
)
4605 /* This happens for no known reason on ALLIANT.
4606 I am guessing that this is the right response. -- RMS. */
4607 else if (xerrno
== EFAULT
)
4610 else if (xerrno
== EBADF
)
4613 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4614 the child's closure of the pts gives the parent a SIGHUP, and
4615 the ptc file descriptor is automatically closed,
4616 yielding EBADF here or at select() call above.
4617 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4618 in m/ibmrt-aix.h), and here we just ignore the select error.
4619 Cleanup occurs c/o status_notify after SIGCLD. */
4620 no_avail
= 1; /* Cannot depend on values returned */
4626 error ("select error: %s", emacs_strerror (xerrno
));
4631 FD_ZERO (&Available
);
4632 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4635 #if defined(sun) && !defined(USG5_4)
4636 if (nfds
> 0 && keyboard_bit_set (&Available
)
4638 /* System sometimes fails to deliver SIGIO.
4640 David J. Mackenzie says that Emacs doesn't compile under
4641 Solaris if this code is enabled, thus the USG5_4 in the CPP
4642 conditional. "I haven't noticed any ill effects so far.
4643 If you find a Solaris expert somewhere, they might know
4645 kill (getpid (), SIGIO
);
4648 #if 0 /* When polling is used, interrupt_input is 0,
4649 so get_input_pending should read the input.
4650 So this should not be needed. */
4651 /* If we are using polling for input,
4652 and we see input available, make it get read now.
4653 Otherwise it might not actually get read for a second.
4654 And on hpux, since we turn off polling in wait_reading_process_output,
4655 it might never get read at all if we don't spend much time
4656 outside of wait_reading_process_output. */
4657 if (read_kbd
&& interrupt_input
4658 && keyboard_bit_set (&Available
)
4659 && input_polling_used ())
4660 kill (getpid (), SIGALRM
);
4663 /* Check for keyboard input */
4664 /* If there is any, return immediately
4665 to give it higher priority than subprocesses */
4669 int old_timers_run
= timers_run
;
4670 struct buffer
*old_buffer
= current_buffer
;
4673 if (detect_input_pending_run_timers (do_display
))
4675 swallow_events (do_display
);
4676 if (detect_input_pending_run_timers (do_display
))
4680 /* If a timer has run, this might have changed buffers
4681 an alike. Make read_key_sequence aware of that. */
4682 if (timers_run
!= old_timers_run
4683 && waiting_for_user_input_p
== -1
4684 && old_buffer
!= current_buffer
)
4685 record_asynch_buffer_change ();
4691 /* If there is unread keyboard input, also return. */
4693 && requeued_events_pending_p ())
4696 /* If we are not checking for keyboard input now,
4697 do process events (but don't run any timers).
4698 This is so that X events will be processed.
4699 Otherwise they may have to wait until polling takes place.
4700 That would causes delays in pasting selections, for example.
4702 (We used to do this only if wait_for_cell.) */
4703 if (read_kbd
== 0 && detect_input_pending ())
4705 swallow_events (do_display
);
4706 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4707 if (detect_input_pending ())
4712 /* Exit now if the cell we're waiting for became non-nil. */
4713 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4717 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4718 go read it. This can happen with X on BSD after logging out.
4719 In that case, there really is no input and no SIGIO,
4720 but select says there is input. */
4722 if (read_kbd
&& interrupt_input
4723 && keyboard_bit_set (&Available
) && ! noninteractive
)
4724 kill (getpid (), SIGIO
);
4728 got_some_input
|= nfds
> 0;
4730 /* If checking input just got us a size-change event from X,
4731 obey it now if we should. */
4732 if (read_kbd
|| ! NILP (wait_for_cell
))
4733 do_pending_window_change (0);
4735 /* Check for data from a process. */
4736 if (no_avail
|| nfds
== 0)
4739 /* Really FIRST_PROC_DESC should be 0 on Unix,
4740 but this is safer in the short run. */
4741 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4743 if (FD_ISSET (channel
, &Available
)
4744 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4748 /* If waiting for this channel, arrange to return as
4749 soon as no more input to be processed. No more
4751 if (wait_channel
== channel
)
4757 proc
= chan_process
[channel
];
4761 /* If this is a server stream socket, accept connection. */
4762 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4764 server_accept_connection (proc
, channel
);
4768 /* Read data from the process, starting with our
4769 buffered-ahead character if we have one. */
4771 nread
= read_process_output (proc
, channel
);
4774 /* Since read_process_output can run a filter,
4775 which can call accept-process-output,
4776 don't try to read from any other processes
4777 before doing the select again. */
4778 FD_ZERO (&Available
);
4781 redisplay_preserve_echo_area (12);
4784 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4787 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4788 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4790 else if (nread
== -1 && errno
== EAGAIN
)
4794 else if (nread
== -1 && errno
== EAGAIN
)
4796 /* Note that we cannot distinguish between no input
4797 available now and a closed pipe.
4798 With luck, a closed pipe will be accompanied by
4799 subprocess termination and SIGCHLD. */
4800 else if (nread
== 0 && !NETCONN_P (proc
))
4802 #endif /* O_NDELAY */
4803 #endif /* O_NONBLOCK */
4805 /* On some OSs with ptys, when the process on one end of
4806 a pty exits, the other end gets an error reading with
4807 errno = EIO instead of getting an EOF (0 bytes read).
4808 Therefore, if we get an error reading and errno =
4809 EIO, just continue, because the child process has
4810 exited and should clean itself up soon (e.g. when we
4813 However, it has been known to happen that the SIGCHLD
4814 got lost. So raise the signl again just in case.
4816 else if (nread
== -1 && errno
== EIO
)
4817 kill (getpid (), SIGCHLD
);
4818 #endif /* HAVE_PTYS */
4819 /* If we can detect process termination, don't consider the process
4820 gone just because its pipe is closed. */
4822 else if (nread
== 0 && !NETCONN_P (proc
))
4827 /* Preserve status of processes already terminated. */
4828 XSETINT (XPROCESS (proc
)->tick
, ++process_tick
);
4829 deactivate_process (proc
);
4830 if (XPROCESS (proc
)->raw_status_new
)
4831 update_status (XPROCESS (proc
));
4832 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4833 XPROCESS (proc
)->status
4834 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4837 #ifdef NON_BLOCKING_CONNECT
4838 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4839 && FD_ISSET (channel
, &connect_wait_mask
))
4841 struct Lisp_Process
*p
;
4843 FD_CLR (channel
, &connect_wait_mask
);
4844 if (--num_pending_connects
< 0)
4847 proc
= chan_process
[channel
];
4851 p
= XPROCESS (proc
);
4854 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4855 So only use it on systems where it is known to work. */
4857 int xlen
= sizeof(xerrno
);
4858 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4863 struct sockaddr pname
;
4864 int pnamelen
= sizeof(pname
);
4866 /* If connection failed, getpeername will fail. */
4868 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4870 /* Obtain connect failure code through error slippage. */
4873 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4880 XSETINT (p
->tick
, ++process_tick
);
4881 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4882 deactivate_process (proc
);
4887 /* Execute the sentinel here. If we had relied on
4888 status_notify to do it later, it will read input
4889 from the process before calling the sentinel. */
4890 exec_sentinel (proc
, build_string ("open\n"));
4891 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4893 FD_SET (XINT (p
->infd
), &input_wait_mask
);
4894 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
4898 #endif /* NON_BLOCKING_CONNECT */
4899 } /* end for each file descriptor */
4900 } /* end while exit conditions not met */
4902 unbind_to (count
, Qnil
);
4904 /* If calling from keyboard input, do not quit
4905 since we want to return C-g as an input character.
4906 Otherwise, do pending quit if requested. */
4909 /* Prevent input_pending from remaining set if we quit. */
4910 clear_input_pending ();
4913 #ifdef POLL_INTERRUPTED_SYS_CALL
4914 /* AlainF 5-Jul-1996
4915 HP-UX 10.10 seems to have problems with signals coming in
4916 Causes "poll: interrupted system call" messages when Emacs is run
4918 Turn periodic alarms back on */
4920 #endif /* POLL_INTERRUPTED_SYS_CALL */
4922 return got_some_input
;
4925 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4928 read_process_output_call (fun_and_args
)
4929 Lisp_Object fun_and_args
;
4931 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4935 read_process_output_error_handler (error
)
4938 cmd_error_internal (error
, "error in process filter: ");
4940 update_echo_area ();
4941 Fsleep_for (make_number (2), Qnil
);
4945 /* Read pending output from the process channel,
4946 starting with our buffered-ahead character if we have one.
4947 Yield number of decoded characters read.
4949 This function reads at most 4096 characters.
4950 If you want to read all available subprocess output,
4951 you must call it repeatedly until it returns zero.
4953 The characters read are decoded according to PROC's coding-system
4957 read_process_output (proc
, channel
)
4959 register int channel
;
4961 register int nbytes
;
4963 register Lisp_Object outstream
;
4964 register struct buffer
*old
= current_buffer
;
4965 register struct Lisp_Process
*p
= XPROCESS (proc
);
4966 register int opoint
;
4967 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4968 int carryover
= XINT (p
->decoding_carryover
);
4972 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
4974 vs
= get_vms_process_pointer (p
->pid
);
4978 return (0); /* Really weird if it does this */
4979 if (!(vs
->iosb
[0] & 1))
4980 return -1; /* I/O error */
4983 error ("Could not get VMS process pointer");
4984 chars
= vs
->inputBuffer
;
4985 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
4988 start_vms_process_read (vs
); /* Crank up the next read on the process */
4989 return 1; /* Nothing worth printing, say we got 1 */
4993 /* The data carried over in the previous decoding (which are at
4994 the tail of decoding buffer) should be prepended to the new
4995 data read to decode all together. */
4996 chars
= (char *) alloca (nbytes
+ carryover
);
4997 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
4998 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
5002 chars
= (char *) alloca (carryover
+ readmax
);
5004 /* See the comment above. */
5005 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5007 #ifdef DATAGRAM_SOCKETS
5008 /* We have a working select, so proc_buffered_char is always -1. */
5009 if (DATAGRAM_CHAN_P (channel
))
5011 int len
= datagram_address
[channel
].len
;
5012 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5013 0, datagram_address
[channel
].sa
, &len
);
5017 if (proc_buffered_char
[channel
] < 0)
5019 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5020 #ifdef ADAPTIVE_READ_BUFFERING
5021 if (nbytes
> 0 && !NILP (p
->adaptive_read_buffering
))
5023 int delay
= XINT (p
->read_output_delay
);
5026 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5029 process_output_delay_count
++;
5030 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5033 else if (delay
> 0 && (nbytes
== readmax
))
5035 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5037 process_output_delay_count
--;
5039 XSETINT (p
->read_output_delay
, delay
);
5042 p
->read_output_skip
= Qt
;
5043 process_output_skip
= 1;
5050 chars
[carryover
] = proc_buffered_char
[channel
];
5051 proc_buffered_char
[channel
] = -1;
5052 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5056 nbytes
= nbytes
+ 1;
5058 #endif /* not VMS */
5060 XSETINT (p
->decoding_carryover
, 0);
5062 /* At this point, NBYTES holds number of bytes just received
5063 (including the one in proc_buffered_char[channel]). */
5066 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5068 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5071 /* Now set NBYTES how many bytes we must decode. */
5072 nbytes
+= carryover
;
5074 /* Read and dispose of the process output. */
5075 outstream
= p
->filter
;
5076 if (!NILP (outstream
))
5078 /* We inhibit quit here instead of just catching it so that
5079 hitting ^G when a filter happens to be running won't screw
5081 int count
= SPECPDL_INDEX ();
5082 Lisp_Object odeactivate
;
5083 Lisp_Object obuffer
, okeymap
;
5085 int outer_running_asynch_code
= running_asynch_code
;
5086 int waiting
= waiting_for_user_input_p
;
5088 /* No need to gcpro these, because all we do with them later
5089 is test them for EQness, and none of them should be a string. */
5090 odeactivate
= Vdeactivate_mark
;
5091 XSETBUFFER (obuffer
, current_buffer
);
5092 okeymap
= current_buffer
->keymap
;
5094 specbind (Qinhibit_quit
, Qt
);
5095 specbind (Qlast_nonmenu_event
, Qt
);
5097 /* In case we get recursively called,
5098 and we already saved the match data nonrecursively,
5099 save the same match data in safely recursive fashion. */
5100 if (outer_running_asynch_code
)
5103 /* Don't clobber the CURRENT match data, either! */
5104 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5105 restore_search_regs ();
5106 record_unwind_save_match_data ();
5107 Fset_match_data (tem
, Qt
);
5110 /* For speed, if a search happens within this code,
5111 save the match data in a special nonrecursive fashion. */
5112 running_asynch_code
= 1;
5114 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5115 text
= coding
->dst_object
;
5116 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5117 /* A new coding system might be found. */
5118 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5120 p
->decode_coding_system
= Vlast_coding_system_used
;
5122 /* Don't call setup_coding_system for
5123 proc_decode_coding_system[channel] here. It is done in
5124 detect_coding called via decode_coding above. */
5126 /* If a coding system for encoding is not yet decided, we set
5127 it as the same as coding-system for decoding.
5129 But, before doing that we must check if
5130 proc_encode_coding_system[p->outfd] surely points to a
5131 valid memory because p->outfd will be changed once EOF is
5132 sent to the process. */
5133 if (NILP (p
->encode_coding_system
)
5134 && proc_encode_coding_system
[XINT (p
->outfd
)])
5136 p
->encode_coding_system
5137 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5138 setup_coding_system (p
->encode_coding_system
,
5139 proc_encode_coding_system
[XINT (p
->outfd
)]);
5143 if (coding
->carryover_bytes
> 0)
5145 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5146 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5147 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5148 coding
->carryover_bytes
);
5149 XSETINT (p
->decoding_carryover
, coding
->carryover_bytes
);
5151 /* Adjust the multibyteness of TEXT to that of the filter. */
5152 if (NILP (p
->filter_multibyte
) != ! STRING_MULTIBYTE (text
))
5153 text
= (STRING_MULTIBYTE (text
)
5154 ? Fstring_as_unibyte (text
)
5155 : Fstring_to_multibyte (text
));
5156 if (SBYTES (text
) > 0)
5157 internal_condition_case_1 (read_process_output_call
,
5159 Fcons (proc
, Fcons (text
, Qnil
))),
5160 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5161 read_process_output_error_handler
);
5163 /* If we saved the match data nonrecursively, restore it now. */
5164 restore_search_regs ();
5165 running_asynch_code
= outer_running_asynch_code
;
5167 /* Handling the process output should not deactivate the mark. */
5168 Vdeactivate_mark
= odeactivate
;
5170 /* Restore waiting_for_user_input_p as it was
5171 when we were called, in case the filter clobbered it. */
5172 waiting_for_user_input_p
= waiting
;
5174 #if 0 /* Call record_asynch_buffer_change unconditionally,
5175 because we might have changed minor modes or other things
5176 that affect key bindings. */
5177 if (! EQ (Fcurrent_buffer (), obuffer
)
5178 || ! EQ (current_buffer
->keymap
, okeymap
))
5180 /* But do it only if the caller is actually going to read events.
5181 Otherwise there's no need to make him wake up, and it could
5182 cause trouble (for example it would make sit_for return). */
5183 if (waiting_for_user_input_p
== -1)
5184 record_asynch_buffer_change ();
5187 start_vms_process_read (vs
);
5189 unbind_to (count
, Qnil
);
5193 /* If no filter, write into buffer if it isn't dead. */
5194 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5196 Lisp_Object old_read_only
;
5197 int old_begv
, old_zv
;
5198 int old_begv_byte
, old_zv_byte
;
5199 Lisp_Object odeactivate
;
5200 int before
, before_byte
;
5205 odeactivate
= Vdeactivate_mark
;
5207 Fset_buffer (p
->buffer
);
5209 opoint_byte
= PT_BYTE
;
5210 old_read_only
= current_buffer
->read_only
;
5213 old_begv_byte
= BEGV_BYTE
;
5214 old_zv_byte
= ZV_BYTE
;
5216 current_buffer
->read_only
= Qnil
;
5218 /* Insert new output into buffer
5219 at the current end-of-output marker,
5220 thus preserving logical ordering of input and output. */
5221 if (XMARKER (p
->mark
)->buffer
)
5222 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5223 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5226 SET_PT_BOTH (ZV
, ZV_BYTE
);
5228 before_byte
= PT_BYTE
;
5230 /* If the output marker is outside of the visible region, save
5231 the restriction and widen. */
5232 if (! (BEGV
<= PT
&& PT
<= ZV
))
5235 decode_coding_c_string (coding
, chars
, nbytes
, Qt
);
5236 text
= coding
->dst_object
;
5237 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5238 /* A new coding system might be found. See the comment in the
5239 similar code in the previous `if' block. */
5240 if (!EQ (p
->decode_coding_system
, Vlast_coding_system_used
))
5242 p
->decode_coding_system
= Vlast_coding_system_used
;
5243 if (NILP (p
->encode_coding_system
)
5244 && proc_encode_coding_system
[XINT (p
->outfd
)])
5246 p
->encode_coding_system
5247 = coding_inherit_eol_type (Vlast_coding_system_used
, Qnil
);
5248 setup_coding_system (p
->encode_coding_system
,
5249 proc_encode_coding_system
[XINT (p
->outfd
)]);
5252 if (coding
->carryover_bytes
> 0)
5254 if (SCHARS (p
->decoding_buf
) < coding
->carryover_bytes
)
5255 p
->decoding_buf
= make_uninit_string (coding
->carryover_bytes
);
5256 bcopy (coding
->carryover
, SDATA (p
->decoding_buf
),
5257 coding
->carryover_bytes
);
5258 XSETINT (p
->decoding_carryover
, coding
->carryover_bytes
);
5260 /* Adjust the multibyteness of TEXT to that of the buffer. */
5261 if (NILP (current_buffer
->enable_multibyte_characters
)
5262 != ! STRING_MULTIBYTE (text
))
5263 text
= (STRING_MULTIBYTE (text
)
5264 ? Fstring_as_unibyte (text
)
5265 : Fstring_to_multibyte (text
));
5266 /* Insert before markers in case we are inserting where
5267 the buffer's mark is, and the user's next command is Meta-y. */
5268 insert_from_string_before_markers (text
, 0, 0,
5269 SCHARS (text
), SBYTES (text
), 0);
5271 /* Make sure the process marker's position is valid when the
5272 process buffer is changed in the signal_after_change above.
5273 W3 is known to do that. */
5274 if (BUFFERP (p
->buffer
)
5275 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5276 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5278 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5280 update_mode_lines
++;
5282 /* Make sure opoint and the old restrictions
5283 float ahead of any new text just as point would. */
5284 if (opoint
>= before
)
5286 opoint
+= PT
- before
;
5287 opoint_byte
+= PT_BYTE
- before_byte
;
5289 if (old_begv
> before
)
5291 old_begv
+= PT
- before
;
5292 old_begv_byte
+= PT_BYTE
- before_byte
;
5294 if (old_zv
>= before
)
5296 old_zv
+= PT
- before
;
5297 old_zv_byte
+= PT_BYTE
- before_byte
;
5300 /* If the restriction isn't what it should be, set it. */
5301 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5302 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5304 /* Handling the process output should not deactivate the mark. */
5305 Vdeactivate_mark
= odeactivate
;
5307 current_buffer
->read_only
= old_read_only
;
5308 SET_PT_BOTH (opoint
, opoint_byte
);
5309 set_buffer_internal (old
);
5312 start_vms_process_read (vs
);
5317 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5319 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5320 This is intended for use by asynchronous process output filters and sentinels. */)
5323 return (waiting_for_user_input_p
? Qt
: Qnil
);
5326 /* Sending data to subprocess */
5328 jmp_buf send_process_frame
;
5329 Lisp_Object process_sent_to
;
5332 send_process_trap ()
5334 SIGNAL_THREAD_CHECK (SIGPIPE
);
5339 sigunblock (sigmask (SIGPIPE
));
5340 longjmp (send_process_frame
, 1);
5343 /* Send some data to process PROC.
5344 BUF is the beginning of the data; LEN is the number of characters.
5345 OBJECT is the Lisp object that the data comes from. If OBJECT is
5346 nil or t, it means that the data comes from C string.
5348 If OBJECT is not nil, the data is encoded by PROC's coding-system
5349 for encoding before it is sent.
5351 This function can evaluate Lisp code and can garbage collect. */
5354 send_process (proc
, buf
, len
, object
)
5355 volatile Lisp_Object proc
;
5356 unsigned char *volatile buf
;
5358 volatile Lisp_Object object
;
5360 /* Use volatile to protect variables from being clobbered by longjmp. */
5361 struct Lisp_Process
*p
= XPROCESS (proc
);
5363 struct coding_system
*coding
;
5364 struct gcpro gcpro1
;
5365 SIGTYPE (*volatile old_sigpipe
) ();
5370 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5373 if (p
->raw_status_new
)
5375 if (! EQ (p
->status
, Qrun
))
5376 error ("Process %s not running", SDATA (p
->name
));
5377 if (XINT (p
->outfd
) < 0)
5378 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5380 coding
= proc_encode_coding_system
[XINT (p
->outfd
)];
5381 Vlast_coding_system_used
= CODING_ID_NAME (coding
->id
);
5383 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5384 || (BUFFERP (object
)
5385 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5388 if (!EQ (Vlast_coding_system_used
, p
->encode_coding_system
))
5389 /* The coding system for encoding was changed to raw-text
5390 because we sent a unibyte text previously. Now we are
5391 sending a multibyte text, thus we must encode it by the
5392 original coding system specified for the current process. */
5393 setup_coding_system (p
->encode_coding_system
, coding
);
5394 coding
->src_multibyte
= 1;
5398 /* For sending a unibyte text, character code conversion should
5399 not take place but EOL conversion should. So, setup raw-text
5400 or one of the subsidiary if we have not yet done it. */
5401 if (CODING_REQUIRE_ENCODING (coding
))
5403 if (CODING_REQUIRE_FLUSHING (coding
))
5405 /* But, before changing the coding, we must flush out data. */
5406 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5407 send_process (proc
, "", 0, Qt
);
5408 coding
->mode
&= CODING_MODE_LAST_BLOCK
;
5410 setup_coding_system (raw_text_coding_system
5411 (Vlast_coding_system_used
),
5413 coding
->src_multibyte
= 0;
5416 coding
->dst_multibyte
= 0;
5418 if (CODING_REQUIRE_ENCODING (coding
))
5420 coding
->dst_object
= Qt
;
5421 if (BUFFERP (object
))
5423 int from_byte
, from
, to
;
5424 int save_pt
, save_pt_byte
;
5425 struct buffer
*cur
= current_buffer
;
5427 set_buffer_internal (XBUFFER (object
));
5428 save_pt
= PT
, save_pt_byte
= PT_BYTE
;
5430 from_byte
= PTR_BYTE_POS (buf
);
5431 from
= BYTE_TO_CHAR (from_byte
);
5432 to
= BYTE_TO_CHAR (from_byte
+ len
);
5433 TEMP_SET_PT_BOTH (from
, from_byte
);
5434 encode_coding_object (coding
, object
, from
, from_byte
,
5435 to
, from_byte
+ len
, Qt
);
5436 TEMP_SET_PT_BOTH (save_pt
, save_pt_byte
);
5437 set_buffer_internal (cur
);
5439 else if (STRINGP (object
))
5441 encode_coding_string (coding
, object
, 1);
5445 coding
->dst_object
= make_unibyte_string (buf
, len
);
5446 coding
->produced
= len
;
5449 len
= coding
->produced
;
5450 buf
= SDATA (coding
->dst_object
);
5454 vs
= get_vms_process_pointer (p
->pid
);
5456 error ("Could not find this process: %x", p
->pid
);
5457 else if (write_to_vms_process (vs
, buf
, len
))
5461 if (pty_max_bytes
== 0)
5463 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5464 pty_max_bytes
= fpathconf (XFASTINT (p
->outfd
), _PC_MAX_CANON
);
5465 if (pty_max_bytes
< 0)
5466 pty_max_bytes
= 250;
5468 pty_max_bytes
= 250;
5470 /* Deduct one, to leave space for the eof. */
5474 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5475 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5476 when returning with longjmp despite being declared volatile. */
5477 if (!setjmp (send_process_frame
))
5479 process_sent_to
= proc
;
5484 /* Decide how much data we can send in one batch.
5485 Long lines need to be split into multiple batches. */
5486 if (!NILP (p
->pty_flag
))
5488 /* Starting this at zero is always correct when not the first
5489 iteration because the previous iteration ended by sending C-d.
5490 It may not be correct for the first iteration
5491 if a partial line was sent in a separate send_process call.
5492 If that proves worth handling, we need to save linepos
5493 in the process object. */
5495 unsigned char *ptr
= (unsigned char *) buf
;
5496 unsigned char *end
= (unsigned char *) buf
+ len
;
5498 /* Scan through this text for a line that is too long. */
5499 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5507 /* If we found one, break the line there
5508 and put in a C-d to force the buffer through. */
5512 /* Send this batch, using one or more write calls. */
5515 int outfd
= XINT (p
->outfd
);
5516 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5517 #ifdef DATAGRAM_SOCKETS
5518 if (DATAGRAM_CHAN_P (outfd
))
5520 rv
= sendto (outfd
, (char *) buf
, this,
5521 0, datagram_address
[outfd
].sa
,
5522 datagram_address
[outfd
].len
);
5523 if (rv
< 0 && errno
== EMSGSIZE
)
5525 signal (SIGPIPE
, old_sigpipe
);
5526 report_file_error ("sending datagram",
5527 Fcons (proc
, Qnil
));
5533 rv
= emacs_write (outfd
, (char *) buf
, this);
5534 #ifdef ADAPTIVE_READ_BUFFERING
5535 if (XINT (p
->read_output_delay
) > 0
5536 && EQ (p
->adaptive_read_buffering
, Qt
))
5538 XSETFASTINT (p
->read_output_delay
, 0);
5539 process_output_delay_count
--;
5540 p
->read_output_skip
= Qnil
;
5544 signal (SIGPIPE
, old_sigpipe
);
5550 || errno
== EWOULDBLOCK
5556 /* Buffer is full. Wait, accepting input;
5557 that may allow the program
5558 to finish doing output and read more. */
5562 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5563 /* A gross hack to work around a bug in FreeBSD.
5564 In the following sequence, read(2) returns
5568 write(2) 954 bytes, get EAGAIN
5569 read(2) 1024 bytes in process_read_output
5570 read(2) 11 bytes in process_read_output
5572 That is, read(2) returns more bytes than have
5573 ever been written successfully. The 1033 bytes
5574 read are the 1022 bytes written successfully
5575 after processing (for example with CRs added if
5576 the terminal is set up that way which it is
5577 here). The same bytes will be seen again in a
5578 later read(2), without the CRs. */
5580 if (errno
== EAGAIN
)
5583 ioctl (XINT (p
->outfd
), TIOCFLUSH
, &flags
);
5585 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5587 /* Running filters might relocate buffers or strings.
5588 Arrange to relocate BUF. */
5589 if (BUFFERP (object
))
5590 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5591 else if (STRINGP (object
))
5592 offset
= buf
- SDATA (object
);
5594 #ifdef EMACS_HAS_USECS
5595 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5597 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5600 if (BUFFERP (object
))
5601 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5602 else if (STRINGP (object
))
5603 buf
= offset
+ SDATA (object
);
5608 /* This is a real error. */
5609 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5616 /* If we sent just part of the string, put in an EOF
5617 to force it through, before we send the rest. */
5619 Fprocess_send_eof (proc
);
5622 #endif /* not VMS */
5625 signal (SIGPIPE
, old_sigpipe
);
5627 proc
= process_sent_to
;
5628 p
= XPROCESS (proc
);
5630 p
->raw_status_new
= 0;
5631 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5632 XSETINT (p
->tick
, ++process_tick
);
5633 deactivate_process (proc
);
5635 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5637 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5644 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5646 doc
: /* Send current contents of region as input to PROCESS.
5647 PROCESS may be a process, a buffer, the name of a process or buffer, or
5648 nil, indicating the current buffer's process.
5649 Called from program, takes three arguments, PROCESS, START and END.
5650 If the region is more than 500 characters long,
5651 it is sent in several bunches. This may happen even for shorter regions.
5652 Output from processes can arrive in between bunches. */)
5653 (process
, start
, end
)
5654 Lisp_Object process
, start
, end
;
5659 proc
= get_process (process
);
5660 validate_region (&start
, &end
);
5662 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5663 move_gap (XINT (start
));
5665 start1
= CHAR_TO_BYTE (XINT (start
));
5666 end1
= CHAR_TO_BYTE (XINT (end
));
5667 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5668 Fcurrent_buffer ());
5673 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5675 doc
: /* Send PROCESS the contents of STRING as input.
5676 PROCESS may be a process, a buffer, the name of a process or buffer, or
5677 nil, indicating the current buffer's process.
5678 If STRING is more than 500 characters long,
5679 it is sent in several bunches. This may happen even for shorter strings.
5680 Output from processes can arrive in between bunches. */)
5682 Lisp_Object process
, string
;
5685 CHECK_STRING (string
);
5686 proc
= get_process (process
);
5687 send_process (proc
, SDATA (string
),
5688 SBYTES (string
), string
);
5692 /* Return the foreground process group for the tty/pty that
5693 the process P uses. */
5695 emacs_get_tty_pgrp (p
)
5696 struct Lisp_Process
*p
;
5701 if (ioctl (XINT (p
->infd
), TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5704 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5705 master side. Try the slave side. */
5706 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5710 ioctl (fd
, TIOCGPGRP
, &gid
);
5714 #endif /* defined (TIOCGPGRP ) */
5719 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5720 Sprocess_running_child_p
, 0, 1, 0,
5721 doc
: /* Return t if PROCESS has given the terminal to a child.
5722 If the operating system does not make it possible to find out,
5723 return t unconditionally. */)
5725 Lisp_Object process
;
5727 /* Initialize in case ioctl doesn't exist or gives an error,
5728 in a way that will cause returning t. */
5731 struct Lisp_Process
*p
;
5733 proc
= get_process (process
);
5734 p
= XPROCESS (proc
);
5736 if (!EQ (p
->childp
, Qt
))
5737 error ("Process %s is not a subprocess",
5739 if (XINT (p
->infd
) < 0)
5740 error ("Process %s is not active",
5743 gid
= emacs_get_tty_pgrp (p
);
5750 /* send a signal number SIGNO to PROCESS.
5751 If CURRENT_GROUP is t, that means send to the process group
5752 that currently owns the terminal being used to communicate with PROCESS.
5753 This is used for various commands in shell mode.
5754 If CURRENT_GROUP is lambda, that means send to the process group
5755 that currently owns the terminal, but only if it is NOT the shell itself.
5757 If NOMSG is zero, insert signal-announcements into process's buffers
5760 If we can, we try to signal PROCESS by sending control characters
5761 down the pty. This allows us to signal inferiors who have changed
5762 their uid, for which killpg would return an EPERM error. */
5765 process_send_signal (process
, signo
, current_group
, nomsg
)
5766 Lisp_Object process
;
5768 Lisp_Object current_group
;
5772 register struct Lisp_Process
*p
;
5776 proc
= get_process (process
);
5777 p
= XPROCESS (proc
);
5779 if (!EQ (p
->childp
, Qt
))
5780 error ("Process %s is not a subprocess",
5782 if (XINT (p
->infd
) < 0)
5783 error ("Process %s is not active",
5786 if (NILP (p
->pty_flag
))
5787 current_group
= Qnil
;
5789 /* If we are using pgrps, get a pgrp number and make it negative. */
5790 if (NILP (current_group
))
5791 /* Send the signal to the shell's process group. */
5795 #ifdef SIGNALS_VIA_CHARACTERS
5796 /* If possible, send signals to the entire pgrp
5797 by sending an input character to it. */
5799 /* TERMIOS is the latest and bestest, and seems most likely to
5800 work. If the system has it, use it. */
5803 cc_t
*sig_char
= NULL
;
5805 tcgetattr (XINT (p
->infd
), &t
);
5810 sig_char
= &t
.c_cc
[VINTR
];
5814 sig_char
= &t
.c_cc
[VQUIT
];
5818 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5819 sig_char
= &t
.c_cc
[VSWTCH
];
5821 sig_char
= &t
.c_cc
[VSUSP
];
5826 if (sig_char
&& *sig_char
!= CDISABLE
)
5828 send_process (proc
, sig_char
, 1, Qnil
);
5831 /* If we can't send the signal with a character,
5832 fall through and send it another way. */
5833 #else /* ! HAVE_TERMIOS */
5835 /* On Berkeley descendants, the following IOCTL's retrieve the
5836 current control characters. */
5837 #if defined (TIOCGLTC) && defined (TIOCGETC)
5845 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5846 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5849 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5850 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5854 ioctl (XINT (p
->infd
), TIOCGLTC
, &lc
);
5855 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5857 #endif /* ! defined (SIGTSTP) */
5860 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5862 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5869 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5870 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5873 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5874 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5878 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5879 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5881 #endif /* ! defined (SIGTSTP) */
5883 #else /* ! defined (TCGETA) */
5884 Your configuration files are messed up
.
5885 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
5886 you'd better be using one of the alternatives above! */
5887 #endif /* ! defined (TCGETA) */
5888 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5889 /* In this case, the code above should alway returns. */
5891 #endif /* ! defined HAVE_TERMIOS */
5893 /* The code above may fall through if it can't
5894 handle the signal. */
5895 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5898 /* Get the current pgrp using the tty itself, if we have that.
5899 Otherwise, use the pty to get the pgrp.
5900 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5901 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5902 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5903 His patch indicates that if TIOCGPGRP returns an error, then
5904 we should just assume that p->pid is also the process group id. */
5906 gid
= emacs_get_tty_pgrp (p
);
5909 /* If we can't get the information, assume
5910 the shell owns the tty. */
5913 /* It is not clear whether anything really can set GID to -1.
5914 Perhaps on some system one of those ioctls can or could do so.
5915 Or perhaps this is vestigial. */
5918 #else /* ! defined (TIOCGPGRP ) */
5919 /* Can't select pgrps on this system, so we know that
5920 the child itself heads the pgrp. */
5922 #endif /* ! defined (TIOCGPGRP ) */
5924 /* If current_group is lambda, and the shell owns the terminal,
5925 don't send any signal. */
5926 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5934 p
->raw_status_new
= 0;
5936 XSETINT (p
->tick
, ++process_tick
);
5938 status_notify (NULL
);
5940 #endif /* ! defined (SIGCONT) */
5943 send_process (proc
, "\003", 1, Qnil
); /* ^C */
5948 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
5953 sys$
forcex (&(p
->pid
), 0, 1);
5956 flush_pending_output (XINT (p
->infd
));
5960 /* If we don't have process groups, send the signal to the immediate
5961 subprocess. That isn't really right, but it's better than any
5962 obvious alternative. */
5965 kill (p
->pid
, signo
);
5969 /* gid may be a pid, or minus a pgrp's number */
5971 if (!NILP (current_group
))
5973 if (ioctl (XINT (p
->infd
), TIOCSIGSEND
, signo
) == -1)
5974 EMACS_KILLPG (gid
, signo
);
5981 #else /* ! defined (TIOCSIGSEND) */
5982 EMACS_KILLPG (gid
, signo
);
5983 #endif /* ! defined (TIOCSIGSEND) */
5986 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5987 doc
: /* Interrupt process PROCESS.
5988 PROCESS may be a process, a buffer, or the name of a process or buffer.
5989 No arg or nil means current buffer's process.
5990 Second arg CURRENT-GROUP non-nil means send signal to
5991 the current process-group of the process's controlling terminal
5992 rather than to the process's own process group.
5993 If the process is a shell, this means interrupt current subjob
5994 rather than the shell.
5996 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5997 don't send the signal. */)
5998 (process
, current_group
)
5999 Lisp_Object process
, current_group
;
6001 process_send_signal (process
, SIGINT
, current_group
, 0);
6005 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6006 doc
: /* Kill process PROCESS. May be process or name of one.
6007 See function `interrupt-process' for more details on usage. */)
6008 (process
, current_group
)
6009 Lisp_Object process
, current_group
;
6011 process_send_signal (process
, SIGKILL
, current_group
, 0);
6015 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6016 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6017 See function `interrupt-process' for more details on usage. */)
6018 (process
, current_group
)
6019 Lisp_Object process
, current_group
;
6021 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6025 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6026 doc
: /* Stop process PROCESS. May be process or name of one.
6027 See function `interrupt-process' for more details on usage.
6028 If PROCESS is a network process, inhibit handling of incoming traffic. */)
6029 (process
, current_group
)
6030 Lisp_Object process
, current_group
;
6033 if (PROCESSP (process
) && NETCONN_P (process
))
6035 struct Lisp_Process
*p
;
6037 p
= XPROCESS (process
);
6038 if (NILP (p
->command
)
6039 && XINT (p
->infd
) >= 0)
6041 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6042 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6049 error ("No SIGTSTP support");
6051 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6056 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6057 doc
: /* Continue process PROCESS. May be process or name of one.
6058 See function `interrupt-process' for more details on usage.
6059 If PROCESS is a network process, resume handling of incoming traffic. */)
6060 (process
, current_group
)
6061 Lisp_Object process
, current_group
;
6064 if (PROCESSP (process
) && NETCONN_P (process
))
6066 struct Lisp_Process
*p
;
6068 p
= XPROCESS (process
);
6069 if (EQ (p
->command
, Qt
)
6070 && XINT (p
->infd
) >= 0
6071 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6073 FD_SET (XINT (p
->infd
), &input_wait_mask
);
6074 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
6081 process_send_signal (process
, SIGCONT
, current_group
, 0);
6083 error ("No SIGCONT support");
6088 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6089 2, 2, "sProcess (name or number): \nnSignal code: ",
6090 doc
: /* Send PROCESS the signal with code SIGCODE.
6091 PROCESS may also be a number specifying the process id of the
6092 process to signal; in this case, the process need not be a child of
6094 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6096 Lisp_Object process
, sigcode
;
6100 if (INTEGERP (process
))
6102 pid
= XINT (process
);
6106 if (FLOATP (process
))
6108 pid
= (pid_t
) XFLOAT_DATA (process
);
6112 if (STRINGP (process
))
6115 if (tem
= Fget_process (process
), NILP (tem
))
6117 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6124 process
= get_process (process
);
6129 CHECK_PROCESS (process
);
6130 pid
= XPROCESS (process
)->pid
;
6132 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6136 #define parse_signal(NAME, VALUE) \
6137 else if (!xstricmp (name, NAME)) \
6138 XSETINT (sigcode, VALUE)
6140 if (INTEGERP (sigcode
))
6144 unsigned char *name
;
6146 CHECK_SYMBOL (sigcode
);
6147 name
= SDATA (SYMBOL_NAME (sigcode
));
6149 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6155 parse_signal ("usr1", SIGUSR1
);
6158 parse_signal ("usr2", SIGUSR2
);
6161 parse_signal ("term", SIGTERM
);
6164 parse_signal ("hup", SIGHUP
);
6167 parse_signal ("int", SIGINT
);
6170 parse_signal ("quit", SIGQUIT
);
6173 parse_signal ("ill", SIGILL
);
6176 parse_signal ("abrt", SIGABRT
);
6179 parse_signal ("emt", SIGEMT
);
6182 parse_signal ("kill", SIGKILL
);
6185 parse_signal ("fpe", SIGFPE
);
6188 parse_signal ("bus", SIGBUS
);
6191 parse_signal ("segv", SIGSEGV
);
6194 parse_signal ("sys", SIGSYS
);
6197 parse_signal ("pipe", SIGPIPE
);
6200 parse_signal ("alrm", SIGALRM
);
6203 parse_signal ("urg", SIGURG
);
6206 parse_signal ("stop", SIGSTOP
);
6209 parse_signal ("tstp", SIGTSTP
);
6212 parse_signal ("cont", SIGCONT
);
6215 parse_signal ("chld", SIGCHLD
);
6218 parse_signal ("ttin", SIGTTIN
);
6221 parse_signal ("ttou", SIGTTOU
);
6224 parse_signal ("io", SIGIO
);
6227 parse_signal ("xcpu", SIGXCPU
);
6230 parse_signal ("xfsz", SIGXFSZ
);
6233 parse_signal ("vtalrm", SIGVTALRM
);
6236 parse_signal ("prof", SIGPROF
);
6239 parse_signal ("winch", SIGWINCH
);
6242 parse_signal ("info", SIGINFO
);
6245 error ("Undefined signal name %s", name
);
6250 return make_number (kill (pid
, XINT (sigcode
)));
6253 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6254 doc
: /* Make PROCESS see end-of-file in its input.
6255 EOF comes after any text already sent to it.
6256 PROCESS may be a process, a buffer, the name of a process or buffer, or
6257 nil, indicating the current buffer's process.
6258 If PROCESS is a network connection, or is a process communicating
6259 through a pipe (as opposed to a pty), then you cannot send any more
6260 text to PROCESS after you call this function. */)
6262 Lisp_Object process
;
6265 struct coding_system
*coding
;
6267 if (DATAGRAM_CONN_P (process
))
6270 proc
= get_process (process
);
6271 coding
= proc_encode_coding_system
[XINT (XPROCESS (proc
)->outfd
)];
6273 /* Make sure the process is really alive. */
6274 if (XPROCESS (proc
)->raw_status_new
)
6275 update_status (XPROCESS (proc
));
6276 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6277 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6279 if (CODING_REQUIRE_FLUSHING (coding
))
6281 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6282 send_process (proc
, "", 0, Qnil
);
6286 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6288 if (!NILP (XPROCESS (proc
)->pty_flag
))
6289 send_process (proc
, "\004", 1, Qnil
);
6292 int old_outfd
, new_outfd
;
6294 #ifdef HAVE_SHUTDOWN
6295 /* If this is a network connection, or socketpair is used
6296 for communication with the subprocess, call shutdown to cause EOF.
6297 (In some old system, shutdown to socketpair doesn't work.
6298 Then we just can't win.) */
6299 if (XPROCESS (proc
)->pid
== 0
6300 || XINT (XPROCESS (proc
)->outfd
) == XINT (XPROCESS (proc
)->infd
))
6301 shutdown (XINT (XPROCESS (proc
)->outfd
), 1);
6302 /* In case of socketpair, outfd == infd, so don't close it. */
6303 if (XINT (XPROCESS (proc
)->outfd
) != XINT (XPROCESS (proc
)->infd
))
6304 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6305 #else /* not HAVE_SHUTDOWN */
6306 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6307 #endif /* not HAVE_SHUTDOWN */
6308 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6311 old_outfd
= XINT (XPROCESS (proc
)->outfd
);
6313 if (!proc_encode_coding_system
[new_outfd
])
6314 proc_encode_coding_system
[new_outfd
]
6315 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6316 bcopy (proc_encode_coding_system
[old_outfd
],
6317 proc_encode_coding_system
[new_outfd
],
6318 sizeof (struct coding_system
));
6319 bzero (proc_encode_coding_system
[old_outfd
],
6320 sizeof (struct coding_system
));
6322 XSETINT (XPROCESS (proc
)->outfd
, new_outfd
);
6328 /* Kill all processes associated with `buffer'.
6329 If `buffer' is nil, kill all processes */
6332 kill_buffer_processes (buffer
)
6335 Lisp_Object tail
, proc
;
6337 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6339 proc
= XCDR (XCAR (tail
));
6340 if (GC_PROCESSP (proc
)
6341 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6343 if (NETCONN_P (proc
))
6344 Fdelete_process (proc
);
6345 else if (XINT (XPROCESS (proc
)->infd
) >= 0)
6346 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6351 /* On receipt of a signal that a child status has changed, loop asking
6352 about children with changed statuses until the system says there
6355 All we do is change the status; we do not run sentinels or print
6356 notifications. That is saved for the next time keyboard input is
6357 done, in order to avoid timing errors.
6359 ** WARNING: this can be called during garbage collection.
6360 Therefore, it must not be fooled by the presence of mark bits in
6363 ** USG WARNING: Although it is not obvious from the documentation
6364 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6365 signal() before executing at least one wait(), otherwise the
6366 handler will be called again, resulting in an infinite loop. The
6367 relevant portion of the documentation reads "SIGCLD signals will be
6368 queued and the signal-catching function will be continually
6369 reentered until the queue is empty". Invoking signal() causes the
6370 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6373 ** Malloc WARNING: This should never call malloc either directly or
6374 indirectly; if it does, that is a bug */
6378 sigchld_handler (signo
)
6381 int old_errno
= errno
;
6383 register struct Lisp_Process
*p
;
6384 extern EMACS_TIME
*input_available_clear_time
;
6386 SIGNAL_THREAD_CHECK (signo
);
6390 sigheld
|= sigbit (SIGCHLD
);
6395 register EMACS_INT pid
;
6402 #endif /* no WUNTRACED */
6403 /* Keep trying to get a status until we get a definitive result. */
6407 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6409 while (pid
< 0 && errno
== EINTR
);
6413 /* PID == 0 means no processes found, PID == -1 means a real
6414 failure. We have done all our job, so return. */
6416 /* USG systems forget handlers when they are used;
6417 must reestablish each time */
6418 #if defined (USG) && !defined (POSIX_SIGNALS)
6419 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6422 sigheld
&= ~sigbit (SIGCHLD
);
6430 #endif /* no WNOHANG */
6432 /* Find the process that signaled us, and record its status. */
6434 /* The process can have been deleted by Fdelete_process. */
6435 tail
= Fmember (make_fixnum_or_float (pid
), deleted_pid_list
);
6438 Fsetcar (tail
, Qnil
);
6439 goto sigchld_end_of_loop
;
6442 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6444 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6446 proc
= XCDR (XCAR (tail
));
6447 p
= XPROCESS (proc
);
6448 if (GC_EQ (p
->childp
, Qt
) && p
->pid
== pid
)
6453 /* Look for an asynchronous process whose pid hasn't been filled
6456 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6458 proc
= XCDR (XCAR (tail
));
6459 p
= XPROCESS (proc
);
6465 /* Change the status of the process that was found. */
6468 union { int i
; WAITTYPE wt
; } u
;
6469 int clear_desc_flag
= 0;
6471 XSETINT (p
->tick
, ++process_tick
);
6473 p
->raw_status
= u
.i
;
6474 p
->raw_status_new
= 1;
6476 /* If process has terminated, stop waiting for its output. */
6477 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6478 && XINT (p
->infd
) >= 0)
6479 clear_desc_flag
= 1;
6481 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6482 if (clear_desc_flag
)
6484 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6485 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6488 /* Tell wait_reading_process_output that it needs to wake up and
6490 if (input_available_clear_time
)
6491 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6494 /* There was no asynchronous process found for that pid: we have
6495 a synchronous process. */
6498 synch_process_alive
= 0;
6500 /* Report the status of the synchronous process. */
6502 synch_process_retcode
= WRETCODE (w
);
6503 else if (WIFSIGNALED (w
))
6504 synch_process_termsig
= WTERMSIG (w
);
6506 /* Tell wait_reading_process_output that it needs to wake up and
6508 if (input_available_clear_time
)
6509 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6512 sigchld_end_of_loop
:
6515 /* On some systems, we must return right away.
6516 If any more processes want to signal us, we will
6518 Otherwise (on systems that have WNOHANG), loop around
6519 to use up all the processes that have something to tell us. */
6520 #if (defined WINDOWSNT \
6521 || (defined USG && !defined GNU_LINUX \
6522 && !(defined HPUX && defined WNOHANG)))
6523 #if defined (USG) && ! defined (POSIX_SIGNALS)
6524 signal (signo
, sigchld_handler
);
6528 #endif /* USG, but not HPUX with WNOHANG */
6531 #endif /* SIGCHLD */
6535 exec_sentinel_unwind (data
)
6538 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6543 exec_sentinel_error_handler (error
)
6546 cmd_error_internal (error
, "error in process sentinel: ");
6548 update_echo_area ();
6549 Fsleep_for (make_number (2), Qnil
);
6554 exec_sentinel (proc
, reason
)
6555 Lisp_Object proc
, reason
;
6557 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6558 register struct Lisp_Process
*p
= XPROCESS (proc
);
6559 int count
= SPECPDL_INDEX ();
6560 int outer_running_asynch_code
= running_asynch_code
;
6561 int waiting
= waiting_for_user_input_p
;
6563 if (inhibit_sentinels
)
6566 /* No need to gcpro these, because all we do with them later
6567 is test them for EQness, and none of them should be a string. */
6568 odeactivate
= Vdeactivate_mark
;
6569 XSETBUFFER (obuffer
, current_buffer
);
6570 okeymap
= current_buffer
->keymap
;
6572 sentinel
= p
->sentinel
;
6573 if (NILP (sentinel
))
6576 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6577 assure that it gets restored no matter how the sentinel exits. */
6579 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6580 /* Inhibit quit so that random quits don't screw up a running filter. */
6581 specbind (Qinhibit_quit
, Qt
);
6582 specbind (Qlast_nonmenu_event
, Qt
);
6584 /* In case we get recursively called,
6585 and we already saved the match data nonrecursively,
6586 save the same match data in safely recursive fashion. */
6587 if (outer_running_asynch_code
)
6590 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6591 restore_search_regs ();
6592 record_unwind_save_match_data ();
6593 Fset_match_data (tem
, Qt
);
6596 /* For speed, if a search happens within this code,
6597 save the match data in a special nonrecursive fashion. */
6598 running_asynch_code
= 1;
6600 internal_condition_case_1 (read_process_output_call
,
6602 Fcons (proc
, Fcons (reason
, Qnil
))),
6603 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6604 exec_sentinel_error_handler
);
6606 /* If we saved the match data nonrecursively, restore it now. */
6607 restore_search_regs ();
6608 running_asynch_code
= outer_running_asynch_code
;
6610 Vdeactivate_mark
= odeactivate
;
6612 /* Restore waiting_for_user_input_p as it was
6613 when we were called, in case the filter clobbered it. */
6614 waiting_for_user_input_p
= waiting
;
6617 if (! EQ (Fcurrent_buffer (), obuffer
)
6618 || ! EQ (current_buffer
->keymap
, okeymap
))
6620 /* But do it only if the caller is actually going to read events.
6621 Otherwise there's no need to make him wake up, and it could
6622 cause trouble (for example it would make sit_for return). */
6623 if (waiting_for_user_input_p
== -1)
6624 record_asynch_buffer_change ();
6626 unbind_to (count
, Qnil
);
6629 /* Report all recent events of a change in process status
6630 (either run the sentinel or output a message).
6631 This is usually done while Emacs is waiting for keyboard input
6632 but can be done at other times. */
6635 status_notify (deleting_process
)
6636 struct Lisp_Process
*deleting_process
;
6638 register Lisp_Object proc
, buffer
;
6639 Lisp_Object tail
, msg
;
6640 struct gcpro gcpro1
, gcpro2
;
6644 /* We need to gcpro tail; if read_process_output calls a filter
6645 which deletes a process and removes the cons to which tail points
6646 from Vprocess_alist, and then causes a GC, tail is an unprotected
6650 /* Set this now, so that if new processes are created by sentinels
6651 that we run, we get called again to handle their status changes. */
6652 update_tick
= process_tick
;
6654 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
6657 register struct Lisp_Process
*p
;
6659 proc
= Fcdr (Fcar (tail
));
6660 p
= XPROCESS (proc
);
6662 if (XINT (p
->tick
) != XINT (p
->update_tick
))
6664 XSETINT (p
->update_tick
, XINT (p
->tick
));
6666 /* If process is still active, read any output that remains. */
6667 while (! EQ (p
->filter
, Qt
)
6668 && ! EQ (p
->status
, Qconnect
)
6669 && ! EQ (p
->status
, Qlisten
)
6670 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6671 && XINT (p
->infd
) >= 0
6672 && p
!= deleting_process
6673 && read_process_output (proc
, XINT (p
->infd
)) > 0);
6677 /* Get the text to use for the message. */
6678 if (p
->raw_status_new
)
6680 msg
= status_message (p
);
6682 /* If process is terminated, deactivate it or delete it. */
6684 if (CONSP (p
->status
))
6685 symbol
= XCAR (p
->status
);
6687 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6688 || EQ (symbol
, Qclosed
))
6690 if (delete_exited_processes
)
6691 remove_process (proc
);
6693 deactivate_process (proc
);
6696 /* The actions above may have further incremented p->tick.
6697 So set p->update_tick again
6698 so that an error in the sentinel will not cause
6699 this code to be run again. */
6700 XSETINT (p
->update_tick
, XINT (p
->tick
));
6701 /* Now output the message suitably. */
6702 if (!NILP (p
->sentinel
))
6703 exec_sentinel (proc
, msg
);
6704 /* Don't bother with a message in the buffer
6705 when a process becomes runnable. */
6706 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6708 Lisp_Object ro
, tem
;
6709 struct buffer
*old
= current_buffer
;
6710 int opoint
, opoint_byte
;
6711 int before
, before_byte
;
6713 ro
= XBUFFER (buffer
)->read_only
;
6715 /* Avoid error if buffer is deleted
6716 (probably that's why the process is dead, too) */
6717 if (NILP (XBUFFER (buffer
)->name
))
6719 Fset_buffer (buffer
);
6722 opoint_byte
= PT_BYTE
;
6723 /* Insert new output into buffer
6724 at the current end-of-output marker,
6725 thus preserving logical ordering of input and output. */
6726 if (XMARKER (p
->mark
)->buffer
)
6727 Fgoto_char (p
->mark
);
6729 SET_PT_BOTH (ZV
, ZV_BYTE
);
6732 before_byte
= PT_BYTE
;
6734 tem
= current_buffer
->read_only
;
6735 current_buffer
->read_only
= Qnil
;
6736 insert_string ("\nProcess ");
6737 Finsert (1, &p
->name
);
6738 insert_string (" ");
6740 current_buffer
->read_only
= tem
;
6741 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6743 if (opoint
>= before
)
6744 SET_PT_BOTH (opoint
+ (PT
- before
),
6745 opoint_byte
+ (PT_BYTE
- before_byte
));
6747 SET_PT_BOTH (opoint
, opoint_byte
);
6749 set_buffer_internal (old
);
6754 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6755 redisplay_preserve_echo_area (13);
6761 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6762 Sset_process_coding_system
, 1, 3, 0,
6763 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6764 DECODING will be used to decode subprocess output and ENCODING to
6765 encode subprocess input. */)
6766 (process
, decoding
, encoding
)
6767 register Lisp_Object process
, decoding
, encoding
;
6769 register struct Lisp_Process
*p
;
6771 CHECK_PROCESS (process
);
6772 p
= XPROCESS (process
);
6773 if (XINT (p
->infd
) < 0)
6774 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6775 if (XINT (p
->outfd
) < 0)
6776 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6777 Fcheck_coding_system (decoding
);
6778 Fcheck_coding_system (encoding
);
6779 encoding
= coding_inherit_eol_type (encoding
, Qnil
);
6780 p
->decode_coding_system
= decoding
;
6781 p
->encode_coding_system
= encoding
;
6782 setup_process_coding_systems (process
);
6787 DEFUN ("process-coding-system",
6788 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6789 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6791 register Lisp_Object process
;
6793 CHECK_PROCESS (process
);
6794 return Fcons (XPROCESS (process
)->decode_coding_system
,
6795 XPROCESS (process
)->encode_coding_system
);
6798 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6799 Sset_process_filter_multibyte
, 2, 2, 0,
6800 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6801 If FLAG is non-nil, the filter is given multibyte strings.
6802 If FLAG is nil, the filter is given unibyte strings. In this case,
6803 all character code conversion except for end-of-line conversion is
6806 Lisp_Object process
, flag
;
6808 register struct Lisp_Process
*p
;
6810 CHECK_PROCESS (process
);
6811 p
= XPROCESS (process
);
6812 p
->filter_multibyte
= flag
;
6813 setup_process_coding_systems (process
);
6818 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6819 Sprocess_filter_multibyte_p
, 1, 1, 0,
6820 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6822 Lisp_Object process
;
6824 register struct Lisp_Process
*p
;
6826 CHECK_PROCESS (process
);
6827 p
= XPROCESS (process
);
6829 return (NILP (p
->filter_multibyte
) ? Qnil
: Qt
);
6834 /* The first time this is called, assume keyboard input comes from DESC
6835 instead of from where we used to expect it.
6836 Subsequent calls mean assume input keyboard can come from DESC
6837 in addition to other places. */
6839 static int add_keyboard_wait_descriptor_called_flag
;
6842 add_keyboard_wait_descriptor (desc
)
6845 if (! add_keyboard_wait_descriptor_called_flag
)
6846 FD_CLR (0, &input_wait_mask
);
6847 add_keyboard_wait_descriptor_called_flag
= 1;
6848 FD_SET (desc
, &input_wait_mask
);
6849 FD_SET (desc
, &non_process_wait_mask
);
6850 if (desc
> max_keyboard_desc
)
6851 max_keyboard_desc
= desc
;
6854 /* From now on, do not expect DESC to give keyboard input. */
6857 delete_keyboard_wait_descriptor (desc
)
6861 int lim
= max_keyboard_desc
;
6863 FD_CLR (desc
, &input_wait_mask
);
6864 FD_CLR (desc
, &non_process_wait_mask
);
6866 if (desc
== max_keyboard_desc
)
6867 for (fd
= 0; fd
< lim
; fd
++)
6868 if (FD_ISSET (fd
, &input_wait_mask
)
6869 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6870 max_keyboard_desc
= fd
;
6873 /* Return nonzero if *MASK has a bit set
6874 that corresponds to one of the keyboard input descriptors. */
6877 keyboard_bit_set (mask
)
6882 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6883 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6884 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6895 inhibit_sentinels
= 0;
6899 if (! noninteractive
|| initialized
)
6901 signal (SIGCHLD
, sigchld_handler
);
6904 FD_ZERO (&input_wait_mask
);
6905 FD_ZERO (&non_keyboard_wait_mask
);
6906 FD_ZERO (&non_process_wait_mask
);
6907 max_process_desc
= 0;
6909 #ifdef NON_BLOCKING_CONNECT
6910 FD_ZERO (&connect_wait_mask
);
6911 num_pending_connects
= 0;
6914 #ifdef ADAPTIVE_READ_BUFFERING
6915 process_output_delay_count
= 0;
6916 process_output_skip
= 0;
6919 FD_SET (0, &input_wait_mask
);
6921 Vprocess_alist
= Qnil
;
6923 deleted_pid_list
= Qnil
;
6925 for (i
= 0; i
< MAXDESC
; i
++)
6927 chan_process
[i
] = Qnil
;
6928 proc_buffered_char
[i
] = -1;
6930 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
6931 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
6932 #ifdef DATAGRAM_SOCKETS
6933 bzero (datagram_address
, sizeof datagram_address
);
6938 Lisp_Object subfeatures
= Qnil
;
6939 struct socket_options
*sopt
;
6941 #define ADD_SUBFEATURE(key, val) \
6942 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
6944 #ifdef NON_BLOCKING_CONNECT
6945 ADD_SUBFEATURE (QCnowait
, Qt
);
6947 #ifdef DATAGRAM_SOCKETS
6948 ADD_SUBFEATURE (QCtype
, Qdatagram
);
6950 #ifdef HAVE_LOCAL_SOCKETS
6951 ADD_SUBFEATURE (QCfamily
, Qlocal
);
6953 ADD_SUBFEATURE (QCfamily
, Qipv4
);
6955 ADD_SUBFEATURE (QCfamily
, Qipv6
);
6957 #ifdef HAVE_GETSOCKNAME
6958 ADD_SUBFEATURE (QCservice
, Qt
);
6960 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
6961 ADD_SUBFEATURE (QCserver
, Qt
);
6964 for (sopt
= socket_options
; sopt
->name
; sopt
++)
6965 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
6967 Fprovide (intern ("make-network-process"), subfeatures
);
6969 #endif /* HAVE_SOCKETS */
6971 #if defined (DARWIN) || defined (MAC_OSX)
6972 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
6973 processes. As such, we only change the default value. */
6976 char *release
= get_operating_system_release();
6977 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
6978 && release
[1] == '.')) {
6979 Vprocess_connection_type
= Qnil
;
6988 Qprocessp
= intern ("processp");
6989 staticpro (&Qprocessp
);
6990 Qrun
= intern ("run");
6992 Qstop
= intern ("stop");
6994 Qsignal
= intern ("signal");
6995 staticpro (&Qsignal
);
6997 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7000 Qexit = intern ("exit");
7001 staticpro (&Qexit); */
7003 Qopen
= intern ("open");
7005 Qclosed
= intern ("closed");
7006 staticpro (&Qclosed
);
7007 Qconnect
= intern ("connect");
7008 staticpro (&Qconnect
);
7009 Qfailed
= intern ("failed");
7010 staticpro (&Qfailed
);
7011 Qlisten
= intern ("listen");
7012 staticpro (&Qlisten
);
7013 Qlocal
= intern ("local");
7014 staticpro (&Qlocal
);
7015 Qipv4
= intern ("ipv4");
7018 Qipv6
= intern ("ipv6");
7021 Qdatagram
= intern ("datagram");
7022 staticpro (&Qdatagram
);
7024 QCname
= intern (":name");
7025 staticpro (&QCname
);
7026 QCbuffer
= intern (":buffer");
7027 staticpro (&QCbuffer
);
7028 QChost
= intern (":host");
7029 staticpro (&QChost
);
7030 QCservice
= intern (":service");
7031 staticpro (&QCservice
);
7032 QCtype
= intern (":type");
7033 staticpro (&QCtype
);
7034 QClocal
= intern (":local");
7035 staticpro (&QClocal
);
7036 QCremote
= intern (":remote");
7037 staticpro (&QCremote
);
7038 QCcoding
= intern (":coding");
7039 staticpro (&QCcoding
);
7040 QCserver
= intern (":server");
7041 staticpro (&QCserver
);
7042 QCnowait
= intern (":nowait");
7043 staticpro (&QCnowait
);
7044 QCsentinel
= intern (":sentinel");
7045 staticpro (&QCsentinel
);
7046 QClog
= intern (":log");
7048 QCnoquery
= intern (":noquery");
7049 staticpro (&QCnoquery
);
7050 QCstop
= intern (":stop");
7051 staticpro (&QCstop
);
7052 QCoptions
= intern (":options");
7053 staticpro (&QCoptions
);
7054 QCplist
= intern (":plist");
7055 staticpro (&QCplist
);
7056 QCfilter_multibyte
= intern (":filter-multibyte");
7057 staticpro (&QCfilter_multibyte
);
7059 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
7060 staticpro (&Qlast_nonmenu_event
);
7062 staticpro (&Vprocess_alist
);
7064 staticpro (&deleted_pid_list
);
7067 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7068 doc
: /* *Non-nil means delete processes immediately when they exit.
7069 A value of nil means don't delete them until `list-processes' is run. */);
7071 delete_exited_processes
= 1;
7073 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7074 doc
: /* Control type of device used to communicate with subprocesses.
7075 Values are nil to use a pipe, or t or `pty' to use a pty.
7076 The value has no effect if the system has no ptys or if all ptys are busy:
7077 then a pipe is used in any case.
7078 The value takes effect when `start-process' is called. */);
7079 Vprocess_connection_type
= Qt
;
7081 #ifdef ADAPTIVE_READ_BUFFERING
7082 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7083 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7084 On some systems, when Emacs reads the output from a subprocess, the output data
7085 is read in very small blocks, potentially resulting in very poor performance.
7086 This behavior can be remedied to some extent by setting this variable to a
7087 non-nil value, as it will automatically delay reading from such processes, to
7088 allow them to produce more output before Emacs tries to read it.
7089 If the value is t, the delay is reset after each write to the process; any other
7090 non-nil value means that the delay is not reset on write.
7091 The variable takes effect when `start-process' is called. */);
7092 Vprocess_adaptive_read_buffering
= Qt
;
7095 defsubr (&Sprocessp
);
7096 defsubr (&Sget_process
);
7097 defsubr (&Sget_buffer_process
);
7098 defsubr (&Sdelete_process
);
7099 defsubr (&Sprocess_status
);
7100 defsubr (&Sprocess_exit_status
);
7101 defsubr (&Sprocess_id
);
7102 defsubr (&Sprocess_name
);
7103 defsubr (&Sprocess_tty_name
);
7104 defsubr (&Sprocess_command
);
7105 defsubr (&Sset_process_buffer
);
7106 defsubr (&Sprocess_buffer
);
7107 defsubr (&Sprocess_mark
);
7108 defsubr (&Sset_process_filter
);
7109 defsubr (&Sprocess_filter
);
7110 defsubr (&Sset_process_sentinel
);
7111 defsubr (&Sprocess_sentinel
);
7112 defsubr (&Sset_process_window_size
);
7113 defsubr (&Sset_process_inherit_coding_system_flag
);
7114 defsubr (&Sprocess_inherit_coding_system_flag
);
7115 defsubr (&Sset_process_query_on_exit_flag
);
7116 defsubr (&Sprocess_query_on_exit_flag
);
7117 defsubr (&Sprocess_contact
);
7118 defsubr (&Sprocess_plist
);
7119 defsubr (&Sset_process_plist
);
7120 defsubr (&Slist_processes
);
7121 defsubr (&Sprocess_list
);
7122 defsubr (&Sstart_process
);
7124 defsubr (&Sset_network_process_option
);
7125 defsubr (&Smake_network_process
);
7126 defsubr (&Sformat_network_address
);
7127 #endif /* HAVE_SOCKETS */
7128 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7130 defsubr (&Snetwork_interface_list
);
7132 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7133 defsubr (&Snetwork_interface_info
);
7135 #endif /* HAVE_SOCKETS ... */
7136 #ifdef DATAGRAM_SOCKETS
7137 defsubr (&Sprocess_datagram_address
);
7138 defsubr (&Sset_process_datagram_address
);
7140 defsubr (&Saccept_process_output
);
7141 defsubr (&Sprocess_send_region
);
7142 defsubr (&Sprocess_send_string
);
7143 defsubr (&Sinterrupt_process
);
7144 defsubr (&Skill_process
);
7145 defsubr (&Squit_process
);
7146 defsubr (&Sstop_process
);
7147 defsubr (&Scontinue_process
);
7148 defsubr (&Sprocess_running_child_p
);
7149 defsubr (&Sprocess_send_eof
);
7150 defsubr (&Ssignal_process
);
7151 defsubr (&Swaiting_for_user_input_p
);
7152 /* defsubr (&Sprocess_connection); */
7153 defsubr (&Sset_process_coding_system
);
7154 defsubr (&Sprocess_coding_system
);
7155 defsubr (&Sset_process_filter_multibyte
);
7156 defsubr (&Sprocess_filter_multibyte_p
);
7160 #else /* not subprocesses */
7162 #include <sys/types.h>
7166 #include "systime.h"
7167 #include "character.h"
7169 #include "termopts.h"
7170 #include "sysselect.h"
7172 extern int frame_garbaged
;
7174 extern EMACS_TIME
timer_check ();
7175 extern int timers_run
;
7179 /* As described above, except assuming that there are no subprocesses:
7181 Wait for timeout to elapse and/or keyboard input to be available.
7184 timeout in seconds, or
7185 zero for no limit, or
7186 -1 means gobble data immediately available but don't wait for any.
7188 read_kbd is a Lisp_Object:
7189 0 to ignore keyboard input, or
7190 1 to return when input is available, or
7191 -1 means caller will actually read the input, so don't throw to
7194 see full version for other parameters. We know that wait_proc will
7195 always be NULL, since `subprocesses' isn't defined.
7197 do_display != 0 means redisplay should be done to show subprocess
7198 output that arrives.
7200 Return true iff we received input from any process. */
7203 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7204 wait_for_cell
, wait_proc
, just_wait_proc
)
7205 int time_limit
, microsecs
, read_kbd
, do_display
;
7206 Lisp_Object wait_for_cell
;
7207 struct Lisp_Process
*wait_proc
;
7211 EMACS_TIME end_time
, timeout
;
7212 SELECT_TYPE waitchannels
;
7215 /* What does time_limit really mean? */
7216 if (time_limit
|| microsecs
)
7218 EMACS_GET_TIME (end_time
);
7219 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7220 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7223 /* Turn off periodic alarms (in case they are in use)
7224 and then turn off any other atimers,
7225 because the select emulator uses alarms. */
7227 turn_on_atimers (0);
7231 int timeout_reduced_for_timers
= 0;
7233 /* If calling from keyboard input, do not quit
7234 since we want to return C-g as an input character.
7235 Otherwise, do pending quit if requested. */
7239 /* Exit now if the cell we're waiting for became non-nil. */
7240 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7243 /* Compute time from now till when time limit is up */
7244 /* Exit if already run out */
7245 if (time_limit
== -1)
7247 /* -1 specified for timeout means
7248 gobble output available now
7249 but don't wait at all. */
7251 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7253 else if (time_limit
|| microsecs
)
7255 EMACS_GET_TIME (timeout
);
7256 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7257 if (EMACS_TIME_NEG_P (timeout
))
7262 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7265 /* If our caller will not immediately handle keyboard events,
7266 run timer events directly.
7267 (Callers that will immediately read keyboard events
7268 call timer_delay on their own.) */
7269 if (NILP (wait_for_cell
))
7271 EMACS_TIME timer_delay
;
7275 int old_timers_run
= timers_run
;
7276 timer_delay
= timer_check (1);
7277 if (timers_run
!= old_timers_run
&& do_display
)
7278 /* We must retry, since a timer may have requeued itself
7279 and that could alter the time delay. */
7280 redisplay_preserve_echo_area (14);
7284 while (!detect_input_pending ());
7286 /* If there is unread keyboard input, also return. */
7288 && requeued_events_pending_p ())
7291 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7293 EMACS_TIME difference
;
7294 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7295 if (EMACS_TIME_NEG_P (difference
))
7297 timeout
= timer_delay
;
7298 timeout_reduced_for_timers
= 1;
7303 /* Cause C-g and alarm signals to take immediate action,
7304 and cause input available signals to zero out timeout. */
7306 set_waiting_for_input (&timeout
);
7308 /* Wait till there is something to do. */
7310 if (! read_kbd
&& NILP (wait_for_cell
))
7311 FD_ZERO (&waitchannels
);
7313 FD_SET (0, &waitchannels
);
7315 /* If a frame has been newly mapped and needs updating,
7316 reprocess its display stuff. */
7317 if (frame_garbaged
&& do_display
)
7319 clear_waiting_for_input ();
7320 redisplay_preserve_echo_area (15);
7322 set_waiting_for_input (&timeout
);
7325 if (read_kbd
&& detect_input_pending ())
7328 FD_ZERO (&waitchannels
);
7331 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7336 /* Make C-g and alarm signals set flags again */
7337 clear_waiting_for_input ();
7339 /* If we woke up due to SIGWINCH, actually change size now. */
7340 do_pending_window_change (0);
7342 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7343 /* We waited the full specified time, so return now. */
7348 /* If the system call was interrupted, then go around the
7350 if (xerrno
== EINTR
)
7351 FD_ZERO (&waitchannels
);
7353 error ("select error: %s", emacs_strerror (xerrno
));
7356 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7357 /* System sometimes fails to deliver SIGIO. */
7358 kill (getpid (), SIGIO
);
7361 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7362 kill (getpid (), SIGIO
);
7365 /* Check for keyboard input */
7368 && detect_input_pending_run_timers (do_display
))
7370 swallow_events (do_display
);
7371 if (detect_input_pending_run_timers (do_display
))
7375 /* If there is unread keyboard input, also return. */
7377 && requeued_events_pending_p ())
7380 /* If wait_for_cell. check for keyboard input
7381 but don't run any timers.
7382 ??? (It seems wrong to me to check for keyboard
7383 input at all when wait_for_cell, but the code
7384 has been this way since July 1994.
7385 Try changing this after version 19.31.) */
7386 if (! NILP (wait_for_cell
)
7387 && detect_input_pending ())
7389 swallow_events (do_display
);
7390 if (detect_input_pending ())
7394 /* Exit now if the cell we're waiting for became non-nil. */
7395 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7405 /* Don't confuse make-docfile by having two doc strings for this function.
7406 make-docfile does not pay attention to #if, for good reason! */
7407 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7410 register Lisp_Object name
;
7415 /* Don't confuse make-docfile by having two doc strings for this function.
7416 make-docfile does not pay attention to #if, for good reason! */
7417 DEFUN ("process-inherit-coding-system-flag",
7418 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7422 register Lisp_Object process
;
7424 /* Ignore the argument and return the value of
7425 inherit-process-coding-system. */
7426 return inherit_process_coding_system
? Qt
: Qnil
;
7429 /* Kill all processes associated with `buffer'.
7430 If `buffer' is nil, kill all processes.
7431 Since we have no subprocesses, this does nothing. */
7434 kill_buffer_processes (buffer
)
7447 QCtype
= intern (":type");
7448 staticpro (&QCtype
);
7450 defsubr (&Sget_buffer_process
);
7451 defsubr (&Sprocess_inherit_coding_system_flag
);
7455 #endif /* not subprocesses */
7457 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7458 (do not change this comment) */