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 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
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
);
678 if (inch
< 0 || outch
< 0)
681 if (!proc_decode_coding_system
[inch
])
682 proc_decode_coding_system
[inch
]
683 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
684 setup_coding_system (p
->decode_coding_system
,
685 proc_decode_coding_system
[inch
]);
686 if (! NILP (p
->filter
))
688 if (NILP (p
->filter_multibyte
))
689 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
691 else if (BUFFERP (p
->buffer
))
693 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
694 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
697 if (!proc_encode_coding_system
[outch
])
698 proc_encode_coding_system
[outch
]
699 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
700 setup_coding_system (p
->encode_coding_system
,
701 proc_encode_coding_system
[outch
]);
702 if (proc_encode_coding_system
[outch
]->eol_type
== CODING_EOL_UNDECIDED
)
703 proc_encode_coding_system
[outch
]->eol_type
= system_eol_type
;
706 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
707 doc
: /* Return t if OBJECT is a process. */)
711 return PROCESSP (object
) ? Qt
: Qnil
;
714 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
715 doc
: /* Return the process named NAME, or nil if there is none. */)
717 register Lisp_Object name
;
722 return Fcdr (Fassoc (name
, Vprocess_alist
));
725 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
726 doc
: /* Return the (or a) process associated with BUFFER.
727 BUFFER may be a buffer or the name of one. */)
729 register Lisp_Object buffer
;
731 register Lisp_Object buf
, tail
, proc
;
733 if (NILP (buffer
)) return Qnil
;
734 buf
= Fget_buffer (buffer
);
735 if (NILP (buf
)) return Qnil
;
737 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
739 proc
= Fcdr (Fcar (tail
));
740 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
746 /* This is how commands for the user decode process arguments. It
747 accepts a process, a process name, a buffer, a buffer name, or nil.
748 Buffers denote the first process in the buffer, and nil denotes the
753 register Lisp_Object name
;
755 register Lisp_Object proc
, obj
;
758 obj
= Fget_process (name
);
760 obj
= Fget_buffer (name
);
762 error ("Process %s does not exist", SDATA (name
));
764 else if (NILP (name
))
765 obj
= Fcurrent_buffer ();
769 /* Now obj should be either a buffer object or a process object.
773 proc
= Fget_buffer_process (obj
);
775 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
787 /* Fdelete_process promises to immediately forget about the process, but in
788 reality, Emacs needs to remember those processes until they have been
789 treated by sigchld_handler; otherwise this handler would consider the
790 process as being synchronous and say that the synchronous process is
792 static Lisp_Object deleted_pid_list
;
795 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
796 doc
: /* Delete PROCESS: kill it and forget about it immediately.
797 PROCESS may be a process, a buffer, the name of a process or buffer, or
798 nil, indicating the current buffer's process. */)
800 register Lisp_Object process
;
802 register struct Lisp_Process
*p
;
804 process
= get_process (process
);
805 p
= XPROCESS (process
);
807 p
->raw_status_new
= 0;
810 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
811 XSETINT (p
->tick
, ++process_tick
);
814 else if (XINT (p
->infd
) >= 0)
819 /* No problem storing the pid here, as it is still in Vprocess_alist. */
820 deleted_pid_list
= Fcons (make_fixnum_or_float (p
->pid
),
821 /* GC treated elements set to nil. */
822 Fdelq (Qnil
, deleted_pid_list
));
823 /* If the process has already signaled, remove it from the list. */
824 if (p
->raw_status_new
)
827 if (CONSP (p
->status
))
828 symbol
= XCAR (p
->status
);
829 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
830 Fdelete (make_fixnum_or_float (p
->pid
), deleted_pid_list
);
834 Fkill_process (process
, Qnil
);
835 /* Do this now, since remove_process will make sigchld_handler do nothing. */
837 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
838 XSETINT (p
->tick
, ++process_tick
);
842 remove_process (process
);
846 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
847 doc
: /* Return the status of PROCESS.
848 The returned value is one of the following symbols:
849 run -- for a process that is running.
850 stop -- for a process stopped but continuable.
851 exit -- for a process that has exited.
852 signal -- for a process that has got a fatal signal.
853 open -- for a network stream connection that is open.
854 listen -- for a network stream server that is listening.
855 closed -- for a network stream connection that is closed.
856 connect -- when waiting for a non-blocking connection to complete.
857 failed -- when a non-blocking connection has failed.
858 nil -- if arg is a process name and no such process exists.
859 PROCESS may be a process, a buffer, the name of a process, or
860 nil, indicating the current buffer's process. */)
862 register Lisp_Object process
;
864 register struct Lisp_Process
*p
;
865 register Lisp_Object status
;
867 if (STRINGP (process
))
868 process
= Fget_process (process
);
870 process
= get_process (process
);
875 p
= XPROCESS (process
);
876 if (p
->raw_status_new
)
880 status
= XCAR (status
);
883 if (EQ (status
, Qexit
))
885 else if (EQ (p
->command
, Qt
))
887 else if (EQ (status
, Qrun
))
893 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
895 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
896 If PROCESS has not yet exited or died, return 0. */)
898 register Lisp_Object process
;
900 CHECK_PROCESS (process
);
901 if (XPROCESS (process
)->raw_status_new
)
902 update_status (XPROCESS (process
));
903 if (CONSP (XPROCESS (process
)->status
))
904 return XCAR (XCDR (XPROCESS (process
)->status
));
905 return make_number (0);
908 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
909 doc
: /* Return the process id of PROCESS.
910 This is the pid of the external process which PROCESS uses or talks to.
911 For a network connection, this value is nil. */)
913 register Lisp_Object process
;
915 CHECK_PROCESS (process
);
916 return (XPROCESS (process
)->pid
917 ? make_fixnum_or_float (XPROCESS (process
)->pid
)
921 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
922 doc
: /* Return the name of PROCESS, as a string.
923 This is the name of the program invoked in PROCESS,
924 possibly modified to make it unique among process names. */)
926 register Lisp_Object process
;
928 CHECK_PROCESS (process
);
929 return XPROCESS (process
)->name
;
932 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
933 doc
: /* Return the command that was executed to start PROCESS.
934 This is a list of strings, the first string being the program executed
935 and the rest of the strings being the arguments given to it.
936 For a non-child channel, this is nil. */)
938 register Lisp_Object process
;
940 CHECK_PROCESS (process
);
941 return XPROCESS (process
)->command
;
944 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
945 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
946 This is the terminal that the process itself reads and writes on,
947 not the name of the pty that Emacs uses to talk with that terminal. */)
949 register Lisp_Object process
;
951 CHECK_PROCESS (process
);
952 return XPROCESS (process
)->tty_name
;
955 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
957 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
959 register Lisp_Object process
, buffer
;
961 struct Lisp_Process
*p
;
963 CHECK_PROCESS (process
);
965 CHECK_BUFFER (buffer
);
966 p
= XPROCESS (process
);
969 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
970 setup_process_coding_systems (process
);
974 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
976 doc
: /* Return the buffer PROCESS is associated with.
977 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
979 register Lisp_Object process
;
981 CHECK_PROCESS (process
);
982 return XPROCESS (process
)->buffer
;
985 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
987 doc
: /* Return the marker for the end of the last output from PROCESS. */)
989 register Lisp_Object process
;
991 CHECK_PROCESS (process
);
992 return XPROCESS (process
)->mark
;
995 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
997 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
998 t means stop accepting output from the process.
1000 When a process has a filter, its buffer is not used for output.
1001 Instead, each time it does output, the entire string of output is
1002 passed to the filter.
1004 The filter gets two arguments: the process and the string of output.
1005 The string argument is normally a multibyte string, except:
1006 - if the process' input coding system is no-conversion or raw-text,
1007 it is a unibyte string (the non-converted input), or else
1008 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1009 string (the result of converting the decoded input multibyte
1010 string to unibyte with `string-make-unibyte'). */)
1012 register Lisp_Object process
, filter
;
1014 struct Lisp_Process
*p
;
1016 CHECK_PROCESS (process
);
1017 p
= XPROCESS (process
);
1019 /* Don't signal an error if the process' input file descriptor
1020 is closed. This could make debugging Lisp more difficult,
1021 for example when doing something like
1023 (setq process (start-process ...))
1025 (set-process-filter process ...) */
1027 if (XINT (p
->infd
) >= 0)
1029 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1031 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
1032 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
1034 else if (EQ (p
->filter
, Qt
)
1035 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
1037 FD_SET (XINT (p
->infd
), &input_wait_mask
);
1038 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
1044 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1045 setup_process_coding_systems (process
);
1049 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1051 doc
: /* Returns the filter function of PROCESS; nil if none.
1052 See `set-process-filter' for more info on filter functions. */)
1054 register Lisp_Object process
;
1056 CHECK_PROCESS (process
);
1057 return XPROCESS (process
)->filter
;
1060 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1062 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1063 The sentinel is called as a function when the process changes state.
1064 It gets two arguments: the process, and a string describing the change. */)
1066 register Lisp_Object process
, sentinel
;
1068 struct Lisp_Process
*p
;
1070 CHECK_PROCESS (process
);
1071 p
= XPROCESS (process
);
1073 p
->sentinel
= sentinel
;
1075 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1079 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1081 doc
: /* Return the sentinel of PROCESS; nil if none.
1082 See `set-process-sentinel' for more info on sentinels. */)
1084 register Lisp_Object process
;
1086 CHECK_PROCESS (process
);
1087 return XPROCESS (process
)->sentinel
;
1090 DEFUN ("set-process-window-size", Fset_process_window_size
,
1091 Sset_process_window_size
, 3, 3, 0,
1092 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1093 (process
, height
, width
)
1094 register Lisp_Object process
, height
, width
;
1096 CHECK_PROCESS (process
);
1097 CHECK_NATNUM (height
);
1098 CHECK_NATNUM (width
);
1100 if (XINT (XPROCESS (process
)->infd
) < 0
1101 || set_window_size (XINT (XPROCESS (process
)->infd
),
1102 XINT (height
), XINT (width
)) <= 0)
1108 DEFUN ("set-process-inherit-coding-system-flag",
1109 Fset_process_inherit_coding_system_flag
,
1110 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1111 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1112 If the second argument FLAG is non-nil, then the variable
1113 `buffer-file-coding-system' of the buffer associated with PROCESS
1114 will be bound to the value of the coding system used to decode
1117 This is useful when the coding system specified for the process buffer
1118 leaves either the character code conversion or the end-of-line conversion
1119 unspecified, or if the coding system used to decode the process output
1120 is more appropriate for saving the process buffer.
1122 Binding the variable `inherit-process-coding-system' to non-nil before
1123 starting the process is an alternative way of setting the inherit flag
1124 for the process which will run. */)
1126 register Lisp_Object process
, flag
;
1128 CHECK_PROCESS (process
);
1129 XPROCESS (process
)->inherit_coding_system_flag
= flag
;
1133 DEFUN ("process-inherit-coding-system-flag",
1134 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1136 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1137 If this flag is t, `buffer-file-coding-system' of the buffer
1138 associated with PROCESS will inherit the coding system used to decode
1139 the process output. */)
1141 register Lisp_Object process
;
1143 CHECK_PROCESS (process
);
1144 return XPROCESS (process
)->inherit_coding_system_flag
;
1147 DEFUN ("set-process-query-on-exit-flag",
1148 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1150 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1151 If the second argument FLAG is non-nil, Emacs will query the user before
1152 exiting if PROCESS is running. */)
1154 register Lisp_Object process
, flag
;
1156 CHECK_PROCESS (process
);
1157 XPROCESS (process
)->kill_without_query
= Fnull (flag
);
1161 DEFUN ("process-query-on-exit-flag",
1162 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1164 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1166 register Lisp_Object process
;
1168 CHECK_PROCESS (process
);
1169 return Fnull (XPROCESS (process
)->kill_without_query
);
1172 #ifdef DATAGRAM_SOCKETS
1173 Lisp_Object
Fprocess_datagram_address ();
1176 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1178 doc
: /* Return the contact info of PROCESS; t for a real child.
1179 For a net connection, the value depends on the optional KEY arg.
1180 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1181 if KEY is t, the complete contact information for the connection is
1182 returned, else the specific value for the keyword KEY is returned.
1183 See `make-network-process' for a list of keywords. */)
1185 register Lisp_Object process
, key
;
1187 Lisp_Object contact
;
1189 CHECK_PROCESS (process
);
1190 contact
= XPROCESS (process
)->childp
;
1192 #ifdef DATAGRAM_SOCKETS
1193 if (DATAGRAM_CONN_P (process
)
1194 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1195 contact
= Fplist_put (contact
, QCremote
,
1196 Fprocess_datagram_address (process
));
1199 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1202 return Fcons (Fplist_get (contact
, QChost
),
1203 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1204 return Fplist_get (contact
, key
);
1207 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1209 doc
: /* Return the plist of PROCESS. */)
1211 register Lisp_Object process
;
1213 CHECK_PROCESS (process
);
1214 return XPROCESS (process
)->plist
;
1217 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1219 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1221 register Lisp_Object process
, plist
;
1223 CHECK_PROCESS (process
);
1226 XPROCESS (process
)->plist
= plist
;
1230 #if 0 /* Turned off because we don't currently record this info
1231 in the process. Perhaps add it. */
1232 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1233 doc
: /* Return the connection type of PROCESS.
1234 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1235 a socket connection. */)
1237 Lisp_Object process
;
1239 return XPROCESS (process
)->type
;
1244 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1246 doc
: /* Convert network ADDRESS from internal format to a string.
1247 A 4 or 5 element vector represents an IPv4 address (with port number).
1248 An 8 or 9 element vector represents an IPv6 address (with port number).
1249 If optional second argument OMIT-PORT is non-nil, don't include a port
1250 number in the string, even when present in ADDRESS.
1251 Returns nil if format of ADDRESS is invalid. */)
1252 (address
, omit_port
)
1253 Lisp_Object address
, omit_port
;
1258 if (STRINGP (address
)) /* AF_LOCAL */
1261 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1263 register struct Lisp_Vector
*p
= XVECTOR (address
);
1264 Lisp_Object args
[6];
1267 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1269 args
[0] = build_string ("%d.%d.%d.%d");
1272 else if (p
->size
== 5)
1274 args
[0] = build_string ("%d.%d.%d.%d:%d");
1277 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1279 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1282 else if (p
->size
== 9)
1284 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1290 for (i
= 0; i
< nargs
; i
++)
1291 args
[i
+1] = p
->contents
[i
];
1292 return Fformat (nargs
+1, args
);
1295 if (CONSP (address
))
1297 Lisp_Object args
[2];
1298 args
[0] = build_string ("<Family %d>");
1299 args
[1] = Fcar (address
);
1300 return Fformat (2, args
);
1309 list_processes_1 (query_only
)
1310 Lisp_Object query_only
;
1312 register Lisp_Object tail
, tem
;
1313 Lisp_Object proc
, minspace
, tem1
;
1314 register struct Lisp_Process
*p
;
1316 int w_proc
, w_buffer
, w_tty
;
1318 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1320 w_proc
= 4; /* Proc */
1321 w_buffer
= 6; /* Buffer */
1322 w_tty
= 0; /* Omit if no ttys */
1324 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1328 proc
= Fcdr (Fcar (tail
));
1329 p
= XPROCESS (proc
);
1330 if (NILP (p
->childp
))
1332 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1334 if (STRINGP (p
->name
)
1335 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1337 if (!NILP (p
->buffer
))
1339 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1340 w_buffer
= 8; /* (Killed) */
1341 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1344 if (STRINGP (p
->tty_name
)
1345 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1349 XSETFASTINT (i_status
, w_proc
+ 1);
1350 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1353 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1354 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1357 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1360 XSETFASTINT (minspace
, 1);
1362 set_buffer_internal (XBUFFER (Vstandard_output
));
1363 current_buffer
->undo_list
= Qt
;
1365 current_buffer
->truncate_lines
= Qt
;
1367 write_string ("Proc", -1);
1368 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1369 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1372 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1374 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1375 write_string ("\n", -1);
1377 write_string ("----", -1);
1378 Findent_to (i_status
, minspace
); write_string ("------", -1);
1379 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1382 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1384 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1385 write_string ("\n", -1);
1387 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1391 proc
= Fcdr (Fcar (tail
));
1392 p
= XPROCESS (proc
);
1393 if (NILP (p
->childp
))
1395 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1398 Finsert (1, &p
->name
);
1399 Findent_to (i_status
, minspace
);
1401 if (p
->raw_status_new
)
1404 if (CONSP (p
->status
))
1405 symbol
= XCAR (p
->status
);
1408 if (EQ (symbol
, Qsignal
))
1411 tem
= Fcar (Fcdr (p
->status
));
1413 if (XINT (tem
) < NSIG
)
1414 write_string (sys_errlist
[XINT (tem
)], -1);
1417 Fprinc (symbol
, Qnil
);
1419 else if (NETCONN1_P (p
))
1421 if (EQ (symbol
, Qexit
))
1422 write_string ("closed", -1);
1423 else if (EQ (p
->command
, Qt
))
1424 write_string ("stopped", -1);
1425 else if (EQ (symbol
, Qrun
))
1426 write_string ("open", -1);
1428 Fprinc (symbol
, Qnil
);
1431 Fprinc (symbol
, Qnil
);
1433 if (EQ (symbol
, Qexit
))
1436 tem
= Fcar (Fcdr (p
->status
));
1439 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1440 write_string (tembuf
, -1);
1444 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1447 Findent_to (i_buffer
, minspace
);
1448 if (NILP (p
->buffer
))
1449 insert_string ("(none)");
1450 else if (NILP (XBUFFER (p
->buffer
)->name
))
1451 insert_string ("(Killed)");
1453 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1457 Findent_to (i_tty
, minspace
);
1458 if (STRINGP (p
->tty_name
))
1459 Finsert (1, &p
->tty_name
);
1462 Findent_to (i_command
, minspace
);
1464 if (EQ (p
->status
, Qlisten
))
1466 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1467 if (INTEGERP (port
))
1468 port
= Fnumber_to_string (port
);
1470 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1471 sprintf (tembuf
, "(network %s server on %s)\n",
1472 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1473 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1474 insert_string (tembuf
);
1476 else if (NETCONN1_P (p
))
1478 /* For a local socket, there is no host name,
1479 so display service instead. */
1480 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1481 if (!STRINGP (host
))
1483 host
= Fplist_get (p
->childp
, QCservice
);
1484 if (INTEGERP (host
))
1485 host
= Fnumber_to_string (host
);
1488 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1489 sprintf (tembuf
, "(network %s connection to %s)\n",
1490 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1491 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1492 insert_string (tembuf
);
1504 insert_string (" ");
1506 insert_string ("\n");
1510 status_notify (NULL
);
1514 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1515 doc
: /* Display a list of all processes.
1516 If optional argument QUERY-ONLY is non-nil, only processes with
1517 the query-on-exit flag set will be listed.
1518 Any process listed as exited or signaled is actually eliminated
1519 after the listing is made. */)
1521 Lisp_Object query_only
;
1523 internal_with_output_to_temp_buffer ("*Process List*",
1524 list_processes_1
, query_only
);
1528 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1529 doc
: /* Return a list of all processes. */)
1532 return Fmapcar (Qcdr
, Vprocess_alist
);
1535 /* Starting asynchronous inferior processes. */
1537 static Lisp_Object
start_process_unwind ();
1539 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1540 doc
: /* Start a program in a subprocess. Return the process object for it.
1541 NAME is name for process. It is modified if necessary to make it unique.
1542 BUFFER is the buffer (or buffer name) to associate with the process.
1543 Process output goes at end of that buffer, unless you specify
1544 an output stream or filter function to handle the output.
1545 BUFFER may be also nil, meaning that this process is not associated
1547 PROGRAM is the program file name. It is searched for in PATH.
1548 Remaining arguments are strings to give program as arguments.
1550 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1553 register Lisp_Object
*args
;
1555 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1557 register unsigned char *new_argv
;
1560 register unsigned char **new_argv
;
1563 int count
= SPECPDL_INDEX ();
1567 buffer
= Fget_buffer_create (buffer
);
1569 /* Make sure that the child will be able to chdir to the current
1570 buffer's current directory, or its unhandled equivalent. We
1571 can't just have the child check for an error when it does the
1572 chdir, since it's in a vfork.
1574 We have to GCPRO around this because Fexpand_file_name and
1575 Funhandled_file_name_directory might call a file name handling
1576 function. The argument list is protected by the caller, so all
1577 we really have to worry about is buffer. */
1579 struct gcpro gcpro1
, gcpro2
;
1581 current_dir
= current_buffer
->directory
;
1583 GCPRO2 (buffer
, current_dir
);
1586 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1588 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1589 report_file_error ("Setting current directory",
1590 Fcons (current_buffer
->directory
, Qnil
));
1596 CHECK_STRING (name
);
1600 CHECK_STRING (program
);
1602 proc
= make_process (name
);
1603 /* If an error occurs and we can't start the process, we want to
1604 remove it from the process list. This means that each error
1605 check in create_process doesn't need to call remove_process
1606 itself; it's all taken care of here. */
1607 record_unwind_protect (start_process_unwind
, proc
);
1609 XPROCESS (proc
)->childp
= Qt
;
1610 XPROCESS (proc
)->plist
= Qnil
;
1611 XPROCESS (proc
)->buffer
= buffer
;
1612 XPROCESS (proc
)->sentinel
= Qnil
;
1613 XPROCESS (proc
)->filter
= Qnil
;
1614 XPROCESS (proc
)->filter_multibyte
1615 = buffer_defaults
.enable_multibyte_characters
;
1616 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1618 #ifdef ADAPTIVE_READ_BUFFERING
1619 XPROCESS (proc
)->adaptive_read_buffering
= Vprocess_adaptive_read_buffering
;
1622 /* Make the process marker point into the process buffer (if any). */
1623 if (BUFFERP (buffer
))
1624 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1625 BUF_ZV (XBUFFER (buffer
)),
1626 BUF_ZV_BYTE (XBUFFER (buffer
)));
1629 /* Decide coding systems for communicating with the process. Here
1630 we don't setup the structure coding_system nor pay attention to
1631 unibyte mode. They are done in create_process. */
1633 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1634 Lisp_Object coding_systems
= Qt
;
1635 Lisp_Object val
, *args2
;
1636 struct gcpro gcpro1
, gcpro2
;
1638 val
= Vcoding_system_for_read
;
1641 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1642 args2
[0] = Qstart_process
;
1643 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1644 GCPRO2 (proc
, current_dir
);
1645 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1647 if (CONSP (coding_systems
))
1648 val
= XCAR (coding_systems
);
1649 else if (CONSP (Vdefault_process_coding_system
))
1650 val
= XCAR (Vdefault_process_coding_system
);
1652 XPROCESS (proc
)->decode_coding_system
= val
;
1654 val
= Vcoding_system_for_write
;
1657 if (EQ (coding_systems
, Qt
))
1659 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1660 args2
[0] = Qstart_process
;
1661 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1662 GCPRO2 (proc
, current_dir
);
1663 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1666 if (CONSP (coding_systems
))
1667 val
= XCDR (coding_systems
);
1668 else if (CONSP (Vdefault_process_coding_system
))
1669 val
= XCDR (Vdefault_process_coding_system
);
1671 XPROCESS (proc
)->encode_coding_system
= val
;
1675 /* Make a one member argv with all args concatenated
1676 together separated by a blank. */
1677 len
= SBYTES (program
) + 2;
1678 for (i
= 3; i
< nargs
; i
++)
1682 len
+= SBYTES (tem
) + 1; /* count the blank */
1684 new_argv
= (unsigned char *) alloca (len
);
1685 strcpy (new_argv
, SDATA (program
));
1686 for (i
= 3; i
< nargs
; i
++)
1690 strcat (new_argv
, " ");
1691 strcat (new_argv
, SDATA (tem
));
1693 /* Need to add code here to check for program existence on VMS */
1696 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1698 /* If program file name is not absolute, search our path for it.
1699 Put the name we will really use in TEM. */
1700 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1701 && !(SCHARS (program
) > 1
1702 && IS_DEVICE_SEP (SREF (program
, 1))))
1704 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1707 GCPRO4 (name
, program
, buffer
, current_dir
);
1708 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1711 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1712 tem
= Fexpand_file_name (tem
, Qnil
);
1716 if (!NILP (Ffile_directory_p (program
)))
1717 error ("Specified program for new process is a directory");
1721 /* If program file name starts with /: for quoting a magic name,
1723 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1724 && SREF (tem
, 1) == ':')
1725 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1727 /* Encode the file name and put it in NEW_ARGV.
1728 That's where the child will use it to execute the program. */
1729 tem
= ENCODE_FILE (tem
);
1730 new_argv
[0] = SDATA (tem
);
1732 /* Here we encode arguments by the coding system used for sending
1733 data to the process. We don't support using different coding
1734 systems for encoding arguments and for encoding data sent to the
1737 for (i
= 3; i
< nargs
; i
++)
1741 if (STRING_MULTIBYTE (tem
))
1742 tem
= (code_convert_string_norecord
1743 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1744 new_argv
[i
- 2] = SDATA (tem
);
1746 new_argv
[i
- 2] = 0;
1747 #endif /* not VMS */
1749 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1750 XPROCESS (proc
)->decoding_carryover
= make_number (0);
1751 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1752 XPROCESS (proc
)->encoding_carryover
= make_number (0);
1754 XPROCESS (proc
)->inherit_coding_system_flag
1755 = (NILP (buffer
) || !inherit_process_coding_system
1758 create_process (proc
, (char **) new_argv
, current_dir
);
1760 return unbind_to (count
, proc
);
1763 /* This function is the unwind_protect form for Fstart_process. If
1764 PROC doesn't have its pid set, then we know someone has signaled
1765 an error and the process wasn't started successfully, so we should
1766 remove it from the process list. */
1768 start_process_unwind (proc
)
1771 if (!PROCESSP (proc
))
1774 /* Was PROC started successfully? */
1775 if (XPROCESS (proc
)->pid
<= 0)
1776 remove_process (proc
);
1782 create_process_1 (timer
)
1783 struct atimer
*timer
;
1785 /* Nothing to do. */
1789 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1792 /* Mimic blocking of signals on system V, which doesn't really have it. */
1794 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1795 int sigchld_deferred
;
1798 create_process_sigchld ()
1800 signal (SIGCHLD
, create_process_sigchld
);
1802 sigchld_deferred
= 1;
1808 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1810 create_process (process
, new_argv
, current_dir
)
1811 Lisp_Object process
;
1813 Lisp_Object current_dir
;
1815 int pid
, inchannel
, outchannel
;
1817 #ifdef POSIX_SIGNALS
1820 struct sigaction sigint_action
;
1821 struct sigaction sigquit_action
;
1823 struct sigaction sighup_action
;
1825 #else /* !POSIX_SIGNALS */
1828 SIGTYPE (*sigchld
)();
1831 #endif /* !POSIX_SIGNALS */
1832 /* Use volatile to protect variables from being clobbered by longjmp. */
1833 volatile int forkin
, forkout
;
1834 volatile int pty_flag
= 0;
1836 extern char **environ
;
1839 inchannel
= outchannel
= -1;
1842 if (!NILP (Vprocess_connection_type
))
1843 outchannel
= inchannel
= allocate_pty ();
1847 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1848 /* On most USG systems it does not work to open the pty's tty here,
1849 then close it and reopen it in the child. */
1851 /* Don't let this terminal become our controlling terminal
1852 (in case we don't have one). */
1853 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1855 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1858 report_file_error ("Opening pty", Qnil
);
1859 #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY)
1860 /* In the case that vfork is defined as fork, the parent process
1861 (Emacs) may send some data before the child process completes
1862 tty options setup. So we setup tty before forking. */
1863 child_setup_tty (forkout
);
1864 #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */
1866 forkin
= forkout
= -1;
1867 #endif /* not USG, or USG_SUBTTY_WORKS */
1871 #endif /* HAVE_PTYS */
1874 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1875 report_file_error ("Opening socketpair", Qnil
);
1876 outchannel
= inchannel
= sv
[0];
1877 forkout
= forkin
= sv
[1];
1879 #else /* not SKTPAIR */
1884 report_file_error ("Creating pipe", Qnil
);
1890 emacs_close (inchannel
);
1891 emacs_close (forkout
);
1892 report_file_error ("Creating pipe", Qnil
);
1897 #endif /* not SKTPAIR */
1900 /* Replaced by close_process_descs */
1901 set_exclusive_use (inchannel
);
1902 set_exclusive_use (outchannel
);
1905 /* Stride people say it's a mystery why this is needed
1906 as well as the O_NDELAY, but that it fails without this. */
1907 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1910 ioctl (inchannel
, FIONBIO
, &one
);
1915 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1916 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1919 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1920 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1924 /* Record this as an active process, with its channels.
1925 As a result, child_setup will close Emacs's side of the pipes. */
1926 chan_process
[inchannel
] = process
;
1927 XSETINT (XPROCESS (process
)->infd
, inchannel
);
1928 XSETINT (XPROCESS (process
)->outfd
, outchannel
);
1930 /* Previously we recorded the tty descriptor used in the subprocess.
1931 It was only used for getting the foreground tty process, so now
1932 we just reopen the device (see emacs_get_tty_pgrp) as this is
1933 more portable (see USG_SUBTTY_WORKS above). */
1935 XPROCESS (process
)->pty_flag
= (pty_flag
? Qt
: Qnil
);
1936 XPROCESS (process
)->status
= Qrun
;
1937 setup_process_coding_systems (process
);
1939 /* Delay interrupts until we have a chance to store
1940 the new fork's pid in its process structure */
1941 #ifdef POSIX_SIGNALS
1942 sigemptyset (&blocked
);
1944 sigaddset (&blocked
, SIGCHLD
);
1946 #ifdef HAVE_WORKING_VFORK
1947 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1948 this sets the parent's signal handlers as well as the child's.
1949 So delay all interrupts whose handlers the child might munge,
1950 and record the current handlers so they can be restored later. */
1951 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1952 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1954 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1956 #endif /* HAVE_WORKING_VFORK */
1957 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1958 #else /* !POSIX_SIGNALS */
1962 #else /* not BSD4_1 */
1963 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1964 sigsetmask (sigmask (SIGCHLD
));
1965 #else /* ordinary USG */
1967 sigchld_deferred
= 0;
1968 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1970 #endif /* ordinary USG */
1971 #endif /* not BSD4_1 */
1972 #endif /* SIGCHLD */
1973 #endif /* !POSIX_SIGNALS */
1975 FD_SET (inchannel
, &input_wait_mask
);
1976 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1977 if (inchannel
> max_process_desc
)
1978 max_process_desc
= inchannel
;
1980 /* Until we store the proper pid, enable sigchld_handler
1981 to recognize an unknown pid as standing for this process.
1982 It is very important not to let this `marker' value stay
1983 in the table after this function has returned; if it does
1984 it might cause call-process to hang and subsequent asynchronous
1985 processes to get their return values scrambled. */
1986 XPROCESS (process
)->pid
= -1;
1991 /* child_setup must clobber environ on systems with true vfork.
1992 Protect it from permanent change. */
1993 char **save_environ
= environ
;
1995 current_dir
= ENCODE_FILE (current_dir
);
2000 #endif /* not WINDOWSNT */
2002 int xforkin
= forkin
;
2003 int xforkout
= forkout
;
2005 #if 0 /* This was probably a mistake--it duplicates code later on,
2006 but fails to handle all the cases. */
2007 /* Make sure SIGCHLD is not blocked in the child. */
2008 sigsetmask (SIGEMPTYMASK
);
2011 /* Make the pty be the controlling terminal of the process. */
2013 /* First, disconnect its current controlling terminal. */
2015 /* We tried doing setsid only if pty_flag, but it caused
2016 process_set_signal to fail on SGI when using a pipe. */
2018 /* Make the pty's terminal the controlling terminal. */
2022 /* We ignore the return value
2023 because faith@cs.unc.edu says that is necessary on Linux. */
2024 ioctl (xforkin
, TIOCSCTTY
, 0);
2027 #else /* not HAVE_SETSID */
2029 /* It's very important to call setpgrp here and no time
2030 afterwards. Otherwise, we lose our controlling tty which
2031 is set when we open the pty. */
2034 #endif /* not HAVE_SETSID */
2035 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2036 if (pty_flag
&& xforkin
>= 0)
2039 tcgetattr (xforkin
, &t
);
2041 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2042 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2045 #if defined (NTTYDISC) && defined (TIOCSETD)
2046 if (pty_flag
&& xforkin
>= 0)
2048 /* Use new line discipline. */
2049 int ldisc
= NTTYDISC
;
2050 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2055 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2056 can do TIOCSPGRP only to the process's controlling tty. */
2059 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2060 I can't test it since I don't have 4.3. */
2061 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2062 ioctl (j
, TIOCNOTTY
, 0);
2065 /* In order to get a controlling terminal on some versions
2066 of BSD, it is necessary to put the process in pgrp 0
2067 before it opens the terminal. */
2075 #endif /* TIOCNOTTY */
2077 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2078 /*** There is a suggestion that this ought to be a
2079 conditional on TIOCSPGRP,
2080 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2081 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2082 that system does seem to need this code, even though
2083 both HAVE_SETSID and TIOCSCTTY are defined. */
2084 /* Now close the pty (if we had it open) and reopen it.
2085 This makes the pty the controlling terminal of the subprocess. */
2088 #ifdef SET_CHILD_PTY_PGRP
2089 int pgrp
= getpid ();
2092 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2095 emacs_close (xforkin
);
2096 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2100 emacs_write (1, "Couldn't open the pty terminal ", 31);
2101 emacs_write (1, pty_name
, strlen (pty_name
));
2102 emacs_write (1, "\n", 1);
2106 #ifdef SET_CHILD_PTY_PGRP
2107 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2108 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2111 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2113 #ifdef SETUP_SLAVE_PTY
2118 #endif /* SETUP_SLAVE_PTY */
2120 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2121 Now reenable it in the child, so it will die when we want it to. */
2123 signal (SIGHUP
, SIG_DFL
);
2125 #endif /* HAVE_PTYS */
2127 signal (SIGINT
, SIG_DFL
);
2128 signal (SIGQUIT
, SIG_DFL
);
2130 /* Stop blocking signals in the child. */
2131 #ifdef POSIX_SIGNALS
2132 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2133 #else /* !POSIX_SIGNALS */
2137 #else /* not BSD4_1 */
2138 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2139 sigsetmask (SIGEMPTYMASK
);
2140 #else /* ordinary USG */
2142 signal (SIGCHLD
, sigchld
);
2144 #endif /* ordinary USG */
2145 #endif /* not BSD4_1 */
2146 #endif /* SIGCHLD */
2147 #endif /* !POSIX_SIGNALS */
2149 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2151 child_setup_tty (xforkout
);
2152 #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */
2154 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2155 new_argv
, 1, current_dir
);
2156 #else /* not WINDOWSNT */
2157 child_setup (xforkin
, xforkout
, xforkout
,
2158 new_argv
, 1, current_dir
);
2159 #endif /* not WINDOWSNT */
2161 environ
= save_environ
;
2166 /* This runs in the Emacs process. */
2170 emacs_close (forkin
);
2171 if (forkin
!= forkout
&& forkout
>= 0)
2172 emacs_close (forkout
);
2176 /* vfork succeeded. */
2177 XPROCESS (process
)->pid
= pid
;
2180 register_child (pid
, inchannel
);
2181 #endif /* WINDOWSNT */
2183 /* If the subfork execv fails, and it exits,
2184 this close hangs. I don't know why.
2185 So have an interrupt jar it loose. */
2187 struct atimer
*timer
;
2191 EMACS_SET_SECS_USECS (offset
, 1, 0);
2192 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2195 emacs_close (forkin
);
2197 cancel_atimer (timer
);
2201 if (forkin
!= forkout
&& forkout
>= 0)
2202 emacs_close (forkout
);
2206 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2209 XPROCESS (process
)->tty_name
= Qnil
;
2212 /* Restore the signal state whether vfork succeeded or not.
2213 (We will signal an error, below, if it failed.) */
2214 #ifdef POSIX_SIGNALS
2215 #ifdef HAVE_WORKING_VFORK
2216 /* Restore the parent's signal handlers. */
2217 sigaction (SIGINT
, &sigint_action
, 0);
2218 sigaction (SIGQUIT
, &sigquit_action
, 0);
2220 sigaction (SIGHUP
, &sighup_action
, 0);
2222 #endif /* HAVE_WORKING_VFORK */
2223 /* Stop blocking signals in the parent. */
2224 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2225 #else /* !POSIX_SIGNALS */
2229 #else /* not BSD4_1 */
2230 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2231 sigsetmask (SIGEMPTYMASK
);
2232 #else /* ordinary USG */
2234 signal (SIGCHLD
, sigchld
);
2235 /* Now really handle any of these signals
2236 that came in during this function. */
2237 if (sigchld_deferred
)
2238 kill (getpid (), SIGCHLD
);
2240 #endif /* ordinary USG */
2241 #endif /* not BSD4_1 */
2242 #endif /* SIGCHLD */
2243 #endif /* !POSIX_SIGNALS */
2245 /* Now generate the error if vfork failed. */
2247 report_file_error ("Doing vfork", Qnil
);
2249 #endif /* not VMS */
2254 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2255 The address family of sa is not included in the result. */
2258 conv_sockaddr_to_lisp (sa
, len
)
2259 struct sockaddr
*sa
;
2262 Lisp_Object address
;
2265 register struct Lisp_Vector
*p
;
2267 switch (sa
->sa_family
)
2271 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2272 len
= sizeof (sin
->sin_addr
) + 1;
2273 address
= Fmake_vector (make_number (len
), Qnil
);
2274 p
= XVECTOR (address
);
2275 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2276 cp
= (unsigned char *)&sin
->sin_addr
;
2282 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2283 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2284 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2285 address
= Fmake_vector (make_number (len
), Qnil
);
2286 p
= XVECTOR (address
);
2287 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2288 for (i
= 0; i
< len
; i
++)
2289 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2293 #ifdef HAVE_LOCAL_SOCKETS
2296 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2297 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2298 if (sockun
->sun_path
[i
] == 0)
2300 return make_unibyte_string (sockun
->sun_path
, i
);
2304 len
-= sizeof (sa
->sa_family
);
2305 address
= Fcons (make_number (sa
->sa_family
),
2306 Fmake_vector (make_number (len
), Qnil
));
2307 p
= XVECTOR (XCDR (address
));
2308 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2314 p
->contents
[i
++] = make_number (*cp
++);
2320 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2323 get_lisp_to_sockaddr_size (address
, familyp
)
2324 Lisp_Object address
;
2327 register struct Lisp_Vector
*p
;
2329 if (VECTORP (address
))
2331 p
= XVECTOR (address
);
2335 return sizeof (struct sockaddr_in
);
2338 else if (p
->size
== 9)
2340 *familyp
= AF_INET6
;
2341 return sizeof (struct sockaddr_in6
);
2345 #ifdef HAVE_LOCAL_SOCKETS
2346 else if (STRINGP (address
))
2348 *familyp
= AF_LOCAL
;
2349 return sizeof (struct sockaddr_un
);
2352 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2354 struct sockaddr
*sa
;
2355 *familyp
= XINT (XCAR (address
));
2356 p
= XVECTOR (XCDR (address
));
2357 return p
->size
+ sizeof (sa
->sa_family
);
2362 /* Convert an address object (vector or string) to an internal sockaddr.
2364 The address format has been basically validated by
2365 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2366 it could have come from user data. So if FAMILY is not valid,
2367 we return after zeroing *SA. */
2370 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2372 Lisp_Object address
;
2373 struct sockaddr
*sa
;
2376 register struct Lisp_Vector
*p
;
2377 register unsigned char *cp
= NULL
;
2382 if (VECTORP (address
))
2384 p
= XVECTOR (address
);
2385 if (family
== AF_INET
)
2387 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2388 len
= sizeof (sin
->sin_addr
) + 1;
2389 i
= XINT (p
->contents
[--len
]);
2390 sin
->sin_port
= htons (i
);
2391 cp
= (unsigned char *)&sin
->sin_addr
;
2392 sa
->sa_family
= family
;
2395 else if (family
== AF_INET6
)
2397 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2398 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2399 len
= sizeof (sin6
->sin6_addr
) + 1;
2400 i
= XINT (p
->contents
[--len
]);
2401 sin6
->sin6_port
= htons (i
);
2402 for (i
= 0; i
< len
; i
++)
2403 if (INTEGERP (p
->contents
[i
]))
2405 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2408 sa
->sa_family
= family
;
2413 else if (STRINGP (address
))
2415 #ifdef HAVE_LOCAL_SOCKETS
2416 if (family
== AF_LOCAL
)
2418 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2419 cp
= SDATA (address
);
2420 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2421 sockun
->sun_path
[i
] = *cp
++;
2422 sa
->sa_family
= family
;
2429 p
= XVECTOR (XCDR (address
));
2430 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2433 for (i
= 0; i
< len
; i
++)
2434 if (INTEGERP (p
->contents
[i
]))
2435 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2438 #ifdef DATAGRAM_SOCKETS
2439 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2441 doc
: /* Get the current datagram address associated with PROCESS. */)
2443 Lisp_Object process
;
2447 CHECK_PROCESS (process
);
2449 if (!DATAGRAM_CONN_P (process
))
2452 channel
= XINT (XPROCESS (process
)->infd
);
2453 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2454 datagram_address
[channel
].len
);
2457 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2459 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2460 Returns nil upon error setting address, ADDRESS otherwise. */)
2462 Lisp_Object process
, address
;
2467 CHECK_PROCESS (process
);
2469 if (!DATAGRAM_CONN_P (process
))
2472 channel
= XINT (XPROCESS (process
)->infd
);
2474 len
= get_lisp_to_sockaddr_size (address
, &family
);
2475 if (datagram_address
[channel
].len
!= len
)
2477 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2483 static struct socket_options
{
2484 /* The name of this option. Should be lowercase version of option
2485 name without SO_ prefix. */
2487 /* Option level SOL_... */
2489 /* Option number SO_... */
2491 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2492 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2493 } socket_options
[] =
2495 #ifdef SO_BINDTODEVICE
2496 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2499 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2502 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2505 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2508 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2511 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2514 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2517 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2519 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2522 /* Set option OPT to value VAL on socket S.
2524 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2525 Signals an error if setting a known option fails.
2529 set_socket_option (s
, opt
, val
)
2531 Lisp_Object opt
, val
;
2534 struct socket_options
*sopt
;
2539 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2540 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2541 if (strcmp (name
, sopt
->name
) == 0)
2544 switch (sopt
->opttype
)
2549 optval
= NILP (val
) ? 0 : 1;
2550 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2551 &optval
, sizeof (optval
));
2559 optval
= XINT (val
);
2561 error ("Bad option value for %s", name
);
2562 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2563 &optval
, sizeof (optval
));
2567 #ifdef SO_BINDTODEVICE
2570 char devname
[IFNAMSIZ
+1];
2572 /* This is broken, at least in the Linux 2.4 kernel.
2573 To unbind, the arg must be a zero integer, not the empty string.
2574 This should work on all systems. KFS. 2003-09-23. */
2575 bzero (devname
, sizeof devname
);
2578 char *arg
= (char *) SDATA (val
);
2579 int len
= min (strlen (arg
), IFNAMSIZ
);
2580 bcopy (arg
, devname
, len
);
2582 else if (!NILP (val
))
2583 error ("Bad option value for %s", name
);
2584 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2593 struct linger linger
;
2596 linger
.l_linger
= 0;
2598 linger
.l_linger
= XINT (val
);
2600 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2601 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2602 &linger
, sizeof (linger
));
2612 report_file_error ("Cannot set network option",
2613 Fcons (opt
, Fcons (val
, Qnil
)));
2614 return (1 << sopt
->optbit
);
2618 DEFUN ("set-network-process-option",
2619 Fset_network_process_option
, Sset_network_process_option
,
2621 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2622 See `make-network-process' for a list of options and values.
2623 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2624 OPTION is not a supported option, return nil instead; otherwise return t. */)
2625 (process
, option
, value
, no_error
)
2626 Lisp_Object process
, option
, value
;
2627 Lisp_Object no_error
;
2630 struct Lisp_Process
*p
;
2632 CHECK_PROCESS (process
);
2633 p
= XPROCESS (process
);
2634 if (!NETCONN1_P (p
))
2635 error ("Process is not a network process");
2639 error ("Process is not running");
2641 if (set_socket_option (s
, option
, value
))
2643 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2647 if (NILP (no_error
))
2648 error ("Unknown or unsupported option");
2654 /* A version of request_sigio suitable for a record_unwind_protect. */
2657 unwind_request_sigio (dummy
)
2660 if (interrupt_input
)
2665 /* Create a network stream/datagram client/server process. Treated
2666 exactly like a normal process when reading and writing. Primary
2667 differences are in status display and process deletion. A network
2668 connection has no PID; you cannot signal it. All you can do is
2669 stop/continue it and deactivate/close it via delete-process */
2671 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2673 doc
: /* Create and return a network server or client process.
2675 In Emacs, network connections are represented by process objects, so
2676 input and output work as for subprocesses and `delete-process' closes
2677 a network connection. However, a network process has no process id,
2678 it cannot be signaled, and the status codes are different from normal
2681 Arguments are specified as keyword/argument pairs. The following
2682 arguments are defined:
2684 :name NAME -- NAME is name for process. It is modified if necessary
2687 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2688 with the process. Process output goes at end of that buffer, unless
2689 you specify an output stream or filter function to handle the output.
2690 BUFFER may be also nil, meaning that this process is not associated
2693 :host HOST -- HOST is name of the host to connect to, or its IP
2694 address. The symbol `local' specifies the local host. If specified
2695 for a server process, it must be a valid name or address for the local
2696 host, and only clients connecting to that address will be accepted.
2698 :service SERVICE -- SERVICE is name of the service desired, or an
2699 integer specifying a port number to connect to. If SERVICE is t,
2700 a random port number is selected for the server.
2702 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2703 stream type connection, `datagram' creates a datagram type connection.
2705 :family FAMILY -- FAMILY is the address (and protocol) family for the
2706 service specified by HOST and SERVICE. The default (nil) is to use
2707 whatever address family (IPv4 or IPv6) that is defined for the host
2708 and port number specified by HOST and SERVICE. Other address families
2710 local -- for a local (i.e. UNIX) address specified by SERVICE.
2711 ipv4 -- use IPv4 address family only.
2712 ipv6 -- use IPv6 address family only.
2714 :local ADDRESS -- ADDRESS is the local address used for the connection.
2715 This parameter is ignored when opening a client process. When specified
2716 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2718 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2719 connection. This parameter is ignored when opening a stream server
2720 process. For a datagram server process, it specifies the initial
2721 setting of the remote datagram address. When specified for a client
2722 process, the FAMILY, HOST, and SERVICE args are ignored.
2724 The format of ADDRESS depends on the address family:
2725 - An IPv4 address is represented as an vector of integers [A B C D P]
2726 corresponding to numeric IP address A.B.C.D and port number P.
2727 - A local address is represented as a string with the address in the
2728 local address space.
2729 - An "unsupported family" address is represented by a cons (F . AV)
2730 where F is the family number and AV is a vector containing the socket
2731 address data with one element per address data byte. Do not rely on
2732 this format in portable code, as it may depend on implementation
2733 defined constants, data sizes, and data structure alignment.
2735 :coding CODING -- If CODING is a symbol, it specifies the coding
2736 system used for both reading and writing for this process. If CODING
2737 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2738 ENCODING is used for writing.
2740 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2741 return without waiting for the connection to complete; instead, the
2742 sentinel function will be called with second arg matching "open" (if
2743 successful) or "failed" when the connect completes. Default is to use
2744 a blocking connect (i.e. wait) for stream type connections.
2746 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2747 running when Emacs is exited.
2749 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2750 In the stopped state, a server process does not accept new
2751 connections, and a client process does not handle incoming traffic.
2752 The stopped state is cleared by `continue-process' and set by
2755 :filter FILTER -- Install FILTER as the process filter.
2757 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2758 process filter are multibyte, otherwise they are unibyte.
2759 If this keyword is not specified, the strings are multibyte iff
2760 `default-enable-multibyte-characters' is non-nil.
2762 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2764 :log LOG -- Install LOG as the server process log function. This
2765 function is called when the server accepts a network connection from a
2766 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2767 is the server process, CLIENT is the new process for the connection,
2768 and MESSAGE is a string.
2770 :plist PLIST -- Install PLIST as the new process' initial plist.
2772 :server QLEN -- if QLEN is non-nil, create a server process for the
2773 specified FAMILY, SERVICE, and connection type (stream or datagram).
2774 If QLEN is an integer, it is used as the max. length of the server's
2775 pending connection queue (also known as the backlog); the default
2776 queue length is 5. Default is to create a client process.
2778 The following network options can be specified for this connection:
2780 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2781 :dontroute BOOL -- Only send to directly connected hosts.
2782 :keepalive BOOL -- Send keep-alive messages on network stream.
2783 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2784 :oobinline BOOL -- Place out-of-band data in receive data stream.
2785 :priority INT -- Set protocol defined priority for sent packets.
2786 :reuseaddr BOOL -- Allow reusing a recently used local address
2787 (this is allowed by default for a server process).
2788 :bindtodevice NAME -- bind to interface NAME. Using this may require
2789 special privileges on some systems.
2791 Consult the relevant system programmer's manual pages for more
2792 information on using these options.
2795 A server process will listen for and accept connections from clients.
2796 When a client connection is accepted, a new network process is created
2797 for the connection with the following parameters:
2799 - The client's process name is constructed by concatenating the server
2800 process' NAME and a client identification string.
2801 - If the FILTER argument is non-nil, the client process will not get a
2802 separate process buffer; otherwise, the client's process buffer is a newly
2803 created buffer named after the server process' BUFFER name or process
2804 NAME concatenated with the client identification string.
2805 - The connection type and the process filter and sentinel parameters are
2806 inherited from the server process' TYPE, FILTER and SENTINEL.
2807 - The client process' contact info is set according to the client's
2808 addressing information (typically an IP address and a port number).
2809 - The client process' plist is initialized from the server's plist.
2811 Notice that the FILTER and SENTINEL args are never used directly by
2812 the server process. Also, the BUFFER argument is not used directly by
2813 the server process, but via the optional :log function, accepted (and
2814 failed) connections may be logged in the server process' buffer.
2816 The original argument list, modified with the actual connection
2817 information, is available via the `process-contact' function.
2819 usage: (make-network-process &rest ARGS) */)
2825 Lisp_Object contact
;
2826 struct Lisp_Process
*p
;
2827 #ifdef HAVE_GETADDRINFO
2828 struct addrinfo ai
, *res
, *lres
;
2829 struct addrinfo hints
;
2830 char *portstring
, portbuf
[128];
2831 #else /* HAVE_GETADDRINFO */
2832 struct _emacs_addrinfo
2838 struct sockaddr
*ai_addr
;
2839 struct _emacs_addrinfo
*ai_next
;
2841 #endif /* HAVE_GETADDRINFO */
2842 struct sockaddr_in address_in
;
2843 #ifdef HAVE_LOCAL_SOCKETS
2844 struct sockaddr_un address_un
;
2849 int s
= -1, outch
, inch
;
2850 struct gcpro gcpro1
;
2851 int count
= SPECPDL_INDEX ();
2853 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2855 Lisp_Object name
, buffer
, host
, service
, address
;
2856 Lisp_Object filter
, sentinel
;
2857 int is_non_blocking_client
= 0;
2858 int is_server
= 0, backlog
= 5;
2865 /* Save arguments for process-contact and clone-process. */
2866 contact
= Flist (nargs
, args
);
2870 /* Ensure socket support is loaded if available. */
2871 init_winsock (TRUE
);
2874 /* :type TYPE (nil: stream, datagram */
2875 tem
= Fplist_get (contact
, QCtype
);
2877 socktype
= SOCK_STREAM
;
2878 #ifdef DATAGRAM_SOCKETS
2879 else if (EQ (tem
, Qdatagram
))
2880 socktype
= SOCK_DGRAM
;
2883 error ("Unsupported connection type");
2886 tem
= Fplist_get (contact
, QCserver
);
2889 /* Don't support network sockets when non-blocking mode is
2890 not available, since a blocked Emacs is not useful. */
2891 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2892 error ("Network servers not supported");
2896 backlog
= XINT (tem
);
2900 /* Make QCaddress an alias for :local (server) or :remote (client). */
2901 QCaddress
= is_server
? QClocal
: QCremote
;
2904 if (!is_server
&& socktype
== SOCK_STREAM
2905 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2907 #ifndef NON_BLOCKING_CONNECT
2908 error ("Non-blocking connect not supported");
2910 is_non_blocking_client
= 1;
2914 name
= Fplist_get (contact
, QCname
);
2915 buffer
= Fplist_get (contact
, QCbuffer
);
2916 filter
= Fplist_get (contact
, QCfilter
);
2917 sentinel
= Fplist_get (contact
, QCsentinel
);
2919 CHECK_STRING (name
);
2922 /* Let's handle TERM before things get complicated ... */
2923 host
= Fplist_get (contact
, QChost
);
2924 CHECK_STRING (host
);
2926 service
= Fplist_get (contact
, QCservice
);
2927 if (INTEGERP (service
))
2928 port
= htons ((unsigned short) XINT (service
));
2931 struct servent
*svc_info
;
2932 CHECK_STRING (service
);
2933 svc_info
= getservbyname (SDATA (service
), "tcp");
2935 error ("Unknown service: %s", SDATA (service
));
2936 port
= svc_info
->s_port
;
2939 s
= connect_server (0);
2941 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2942 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2943 send_command (s
, C_DUMB
, 1, 0);
2945 #else /* not TERM */
2947 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2948 ai
.ai_socktype
= socktype
;
2953 /* :local ADDRESS or :remote ADDRESS */
2954 address
= Fplist_get (contact
, QCaddress
);
2955 if (!NILP (address
))
2957 host
= service
= Qnil
;
2959 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2960 error ("Malformed :address");
2961 ai
.ai_family
= family
;
2962 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2963 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2967 /* :family FAMILY -- nil (for Inet), local, or integer. */
2968 tem
= Fplist_get (contact
, QCfamily
);
2971 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
2977 #ifdef HAVE_LOCAL_SOCKETS
2978 else if (EQ (tem
, Qlocal
))
2982 else if (EQ (tem
, Qipv6
))
2985 else if (EQ (tem
, Qipv4
))
2987 else if (INTEGERP (tem
))
2988 family
= XINT (tem
);
2990 error ("Unknown address family");
2992 ai
.ai_family
= family
;
2994 /* :service SERVICE -- string, integer (port number), or t (random port). */
2995 service
= Fplist_get (contact
, QCservice
);
2997 #ifdef HAVE_LOCAL_SOCKETS
2998 if (family
== AF_LOCAL
)
3000 /* Host is not used. */
3002 CHECK_STRING (service
);
3003 bzero (&address_un
, sizeof address_un
);
3004 address_un
.sun_family
= AF_LOCAL
;
3005 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3006 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3007 ai
.ai_addrlen
= sizeof address_un
;
3012 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3013 host
= Fplist_get (contact
, QChost
);
3016 if (EQ (host
, Qlocal
))
3017 host
= build_string ("localhost");
3018 CHECK_STRING (host
);
3021 /* Slow down polling to every ten seconds.
3022 Some kernels have a bug which causes retrying connect to fail
3023 after a connect. Polling can interfere with gethostbyname too. */
3024 #ifdef POLL_FOR_INPUT
3025 if (socktype
== SOCK_STREAM
)
3027 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3028 bind_polling_period (10);
3032 #ifdef HAVE_GETADDRINFO
3033 /* If we have a host, use getaddrinfo to resolve both host and service.
3034 Otherwise, use getservbyname to lookup the service. */
3038 /* SERVICE can either be a string or int.
3039 Convert to a C string for later use by getaddrinfo. */
3040 if (EQ (service
, Qt
))
3042 else if (INTEGERP (service
))
3044 sprintf (portbuf
, "%ld", (long) XINT (service
));
3045 portstring
= portbuf
;
3049 CHECK_STRING (service
);
3050 portstring
= SDATA (service
);
3055 memset (&hints
, 0, sizeof (hints
));
3057 hints
.ai_family
= family
;
3058 hints
.ai_socktype
= socktype
;
3059 hints
.ai_protocol
= 0;
3060 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3062 #ifdef HAVE_GAI_STRERROR
3063 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3065 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3071 #endif /* HAVE_GETADDRINFO */
3073 /* We end up here if getaddrinfo is not defined, or in case no hostname
3074 has been specified (e.g. for a local server process). */
3076 if (EQ (service
, Qt
))
3078 else if (INTEGERP (service
))
3079 port
= htons ((unsigned short) XINT (service
));
3082 struct servent
*svc_info
;
3083 CHECK_STRING (service
);
3084 svc_info
= getservbyname (SDATA (service
),
3085 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3087 error ("Unknown service: %s", SDATA (service
));
3088 port
= svc_info
->s_port
;
3091 bzero (&address_in
, sizeof address_in
);
3092 address_in
.sin_family
= family
;
3093 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3094 address_in
.sin_port
= port
;
3096 #ifndef HAVE_GETADDRINFO
3099 struct hostent
*host_info_ptr
;
3101 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3102 as it may `hang' Emacs for a very long time. */
3105 host_info_ptr
= gethostbyname (SDATA (host
));
3110 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3111 host_info_ptr
->h_length
);
3112 family
= host_info_ptr
->h_addrtype
;
3113 address_in
.sin_family
= family
;
3116 /* Attempt to interpret host as numeric inet address */
3118 IN_ADDR numeric_addr
;
3119 numeric_addr
= inet_addr ((char *) SDATA (host
));
3120 if (NUMERIC_ADDR_ERROR
)
3121 error ("Unknown host \"%s\"", SDATA (host
));
3123 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3124 sizeof (address_in
.sin_addr
));
3128 #endif /* not HAVE_GETADDRINFO */
3130 ai
.ai_family
= family
;
3131 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3132 ai
.ai_addrlen
= sizeof address_in
;
3136 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3137 when connect is interrupted. So let's not let it get interrupted.
3138 Note we do not turn off polling, because polling is only used
3139 when not interrupt_input, and thus not normally used on the systems
3140 which have this bug. On systems which use polling, there's no way
3141 to quit if polling is turned off. */
3143 && !is_server
&& socktype
== SOCK_STREAM
)
3145 /* Comment from KFS: The original open-network-stream code
3146 didn't unwind protect this, but it seems like the proper
3147 thing to do. In any case, I don't see how it could harm to
3148 do this -- and it makes cleanup (using unbind_to) easier. */
3149 record_unwind_protect (unwind_request_sigio
, Qnil
);
3153 /* Do this in case we never enter the for-loop below. */
3154 count1
= SPECPDL_INDEX ();
3157 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3163 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3170 #ifdef DATAGRAM_SOCKETS
3171 if (!is_server
&& socktype
== SOCK_DGRAM
)
3173 #endif /* DATAGRAM_SOCKETS */
3175 #ifdef NON_BLOCKING_CONNECT
3176 if (is_non_blocking_client
)
3179 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3181 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3193 /* Make us close S if quit. */
3194 record_unwind_protect (close_file_unwind
, make_number (s
));
3196 /* Parse network options in the arg list.
3197 We simply ignore anything which isn't a known option (including other keywords).
3198 An error is signalled if setting a known option fails. */
3199 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3200 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3204 /* Configure as a server socket. */
3206 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3207 explicit :reuseaddr key to override this. */
3208 #ifdef HAVE_LOCAL_SOCKETS
3209 if (family
!= AF_LOCAL
)
3211 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3214 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3215 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3218 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3219 report_file_error ("Cannot bind server socket", Qnil
);
3221 #ifdef HAVE_GETSOCKNAME
3222 if (EQ (service
, Qt
))
3224 struct sockaddr_in sa1
;
3225 int len1
= sizeof (sa1
);
3226 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3228 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3229 service
= make_number (ntohs (sa1
.sin_port
));
3230 contact
= Fplist_put (contact
, QCservice
, service
);
3235 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3236 report_file_error ("Cannot listen on server socket", Qnil
);
3244 /* This turns off all alarm-based interrupts; the
3245 bind_polling_period call above doesn't always turn all the
3246 short-interval ones off, especially if interrupt_input is
3249 It'd be nice to be able to control the connect timeout
3250 though. Would non-blocking connect calls be portable?
3252 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3254 turn_on_atimers (0);
3256 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3259 turn_on_atimers (1);
3261 if (ret
== 0 || xerrno
== EISCONN
)
3263 /* The unwind-protect will be discarded afterwards.
3264 Likewise for immediate_quit. */
3268 #ifdef NON_BLOCKING_CONNECT
3270 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3274 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3282 /* Discard the unwind protect closing S. */
3283 specpdl_ptr
= specpdl
+ count1
;
3287 if (xerrno
== EINTR
)
3293 #ifdef DATAGRAM_SOCKETS
3294 if (socktype
== SOCK_DGRAM
)
3296 if (datagram_address
[s
].sa
)
3298 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3299 datagram_address
[s
].len
= lres
->ai_addrlen
;
3303 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3304 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3307 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3308 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3309 conv_lisp_to_sockaddr (rfamily
, remote
,
3310 datagram_address
[s
].sa
, rlen
);
3314 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3317 contact
= Fplist_put (contact
, QCaddress
,
3318 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3319 #ifdef HAVE_GETSOCKNAME
3322 struct sockaddr_in sa1
;
3323 int len1
= sizeof (sa1
);
3324 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3325 contact
= Fplist_put (contact
, QClocal
,
3326 conv_sockaddr_to_lisp (&sa1
, len1
));
3331 #ifdef HAVE_GETADDRINFO
3338 /* Discard the unwind protect for closing S, if any. */
3339 specpdl_ptr
= specpdl
+ count1
;
3341 /* Unwind bind_polling_period and request_sigio. */
3342 unbind_to (count
, Qnil
);
3346 /* If non-blocking got this far - and failed - assume non-blocking is
3347 not supported after all. This is probably a wrong assumption, but
3348 the normal blocking calls to open-network-stream handles this error
3350 if (is_non_blocking_client
)
3355 report_file_error ("make server process failed", contact
);
3357 report_file_error ("make client process failed", contact
);
3360 #endif /* not TERM */
3366 buffer
= Fget_buffer_create (buffer
);
3367 proc
= make_process (name
);
3369 chan_process
[inch
] = proc
;
3372 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3375 fcntl (inch
, F_SETFL
, O_NDELAY
);
3379 p
= XPROCESS (proc
);
3381 p
->childp
= contact
;
3382 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3385 p
->sentinel
= sentinel
;
3387 p
->filter_multibyte
= buffer_defaults
.enable_multibyte_characters
;
3388 /* Override the above only if :filter-multibyte is specified. */
3389 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3390 p
->filter_multibyte
= Fplist_get (contact
, QCfilter_multibyte
);
3391 p
->log
= Fplist_get (contact
, QClog
);
3392 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3393 p
->kill_without_query
= Qt
;
3394 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3397 XSETINT (p
->infd
, inch
);
3398 XSETINT (p
->outfd
, outch
);
3399 if (is_server
&& socktype
== SOCK_STREAM
)
3400 p
->status
= Qlisten
;
3402 /* Make the process marker point into the process buffer (if any). */
3403 if (BUFFERP (buffer
))
3404 set_marker_both (p
->mark
, buffer
,
3405 BUF_ZV (XBUFFER (buffer
)),
3406 BUF_ZV_BYTE (XBUFFER (buffer
)));
3408 #ifdef NON_BLOCKING_CONNECT
3409 if (is_non_blocking_client
)
3411 /* We may get here if connect did succeed immediately. However,
3412 in that case, we still need to signal this like a non-blocking
3414 p
->status
= Qconnect
;
3415 if (!FD_ISSET (inch
, &connect_wait_mask
))
3417 FD_SET (inch
, &connect_wait_mask
);
3418 num_pending_connects
++;
3423 /* A server may have a client filter setting of Qt, but it must
3424 still listen for incoming connects unless it is stopped. */
3425 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3426 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3428 FD_SET (inch
, &input_wait_mask
);
3429 FD_SET (inch
, &non_keyboard_wait_mask
);
3432 if (inch
> max_process_desc
)
3433 max_process_desc
= inch
;
3435 tem
= Fplist_member (contact
, QCcoding
);
3436 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3437 tem
= Qnil
; /* No error message (too late!). */
3440 /* Setup coding systems for communicating with the network stream. */
3441 struct gcpro gcpro1
;
3442 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3443 Lisp_Object coding_systems
= Qt
;
3444 Lisp_Object args
[5], val
;
3448 val
= XCAR (XCDR (tem
));
3452 else if (!NILP (Vcoding_system_for_read
))
3453 val
= Vcoding_system_for_read
;
3454 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3455 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3456 /* We dare not decode end-of-line format by setting VAL to
3457 Qraw_text, because the existing Emacs Lisp libraries
3458 assume that they receive bare code including a sequene of
3463 if (NILP (host
) || NILP (service
))
3464 coding_systems
= Qnil
;
3467 args
[0] = Qopen_network_stream
, args
[1] = name
,
3468 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3470 coding_systems
= Ffind_operation_coding_system (5, args
);
3473 if (CONSP (coding_systems
))
3474 val
= XCAR (coding_systems
);
3475 else if (CONSP (Vdefault_process_coding_system
))
3476 val
= XCAR (Vdefault_process_coding_system
);
3480 p
->decode_coding_system
= val
;
3484 val
= XCAR (XCDR (tem
));
3488 else if (!NILP (Vcoding_system_for_write
))
3489 val
= Vcoding_system_for_write
;
3490 else if (NILP (current_buffer
->enable_multibyte_characters
))
3494 if (EQ (coding_systems
, Qt
))
3496 if (NILP (host
) || NILP (service
))
3497 coding_systems
= Qnil
;
3500 args
[0] = Qopen_network_stream
, args
[1] = name
,
3501 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3503 coding_systems
= Ffind_operation_coding_system (5, args
);
3507 if (CONSP (coding_systems
))
3508 val
= XCDR (coding_systems
);
3509 else if (CONSP (Vdefault_process_coding_system
))
3510 val
= XCDR (Vdefault_process_coding_system
);
3514 p
->encode_coding_system
= val
;
3516 setup_process_coding_systems (proc
);
3518 p
->decoding_buf
= make_uninit_string (0);
3519 p
->decoding_carryover
= make_number (0);
3520 p
->encoding_buf
= make_uninit_string (0);
3521 p
->encoding_carryover
= make_number (0);
3523 p
->inherit_coding_system_flag
3524 = (!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
3530 #endif /* HAVE_SOCKETS */
3533 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3536 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3537 doc
: /* Return an alist of all network interfaces and their network address.
3538 Each element is a cons, the car of which is a string containing the
3539 interface name, and the cdr is the network address in internal
3540 format; see the description of ADDRESS in `make-network-process'. */)
3543 struct ifconf ifconf
;
3544 struct ifreq
*ifreqs
= NULL
;
3549 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3555 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3556 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3563 ifconf
.ifc_len
= buf_size
;
3564 ifconf
.ifc_req
= ifreqs
;
3565 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3571 if (ifconf
.ifc_len
== buf_size
)
3575 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3578 while (--ifaces
>= 0)
3580 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3581 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3582 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3584 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3585 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3586 res
= Fcons (Fcons (build_string (namebuf
),
3587 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3588 sizeof (struct sockaddr
))),
3594 #endif /* SIOCGIFCONF */
3596 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3603 static struct ifflag_def ifflag_table
[] = {
3607 #ifdef IFF_BROADCAST
3608 { IFF_BROADCAST
, "broadcast" },
3611 { IFF_DEBUG
, "debug" },
3614 { IFF_LOOPBACK
, "loopback" },
3616 #ifdef IFF_POINTOPOINT
3617 { IFF_POINTOPOINT
, "pointopoint" },
3620 { IFF_RUNNING
, "running" },
3623 { IFF_NOARP
, "noarp" },
3626 { IFF_PROMISC
, "promisc" },
3628 #ifdef IFF_NOTRAILERS
3629 { IFF_NOTRAILERS
, "notrailers" },
3632 { IFF_ALLMULTI
, "allmulti" },
3635 { IFF_MASTER
, "master" },
3638 { IFF_SLAVE
, "slave" },
3640 #ifdef IFF_MULTICAST
3641 { IFF_MULTICAST
, "multicast" },
3644 { IFF_PORTSEL
, "portsel" },
3646 #ifdef IFF_AUTOMEDIA
3647 { IFF_AUTOMEDIA
, "automedia" },
3650 { IFF_DYNAMIC
, "dynamic" },
3653 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3656 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3659 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3662 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3665 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3670 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3671 doc
: /* Return information about network interface named IFNAME.
3672 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3673 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3674 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3675 FLAGS is the current flags of the interface. */)
3680 Lisp_Object res
= Qnil
;
3685 CHECK_STRING (ifname
);
3687 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3688 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3690 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3695 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3696 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3698 int flags
= rq
.ifr_flags
;
3699 struct ifflag_def
*fp
;
3703 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3705 if (flags
& fp
->flag_bit
)
3707 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3708 flags
-= fp
->flag_bit
;
3711 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3713 if (flags
& (1 << fnum
))
3715 elt
= Fcons (make_number (fnum
), elt
);
3720 res
= Fcons (elt
, res
);
3723 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3724 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3726 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3727 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3731 for (n
= 0; n
< 6; n
++)
3732 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3733 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3736 res
= Fcons (elt
, res
);
3739 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3740 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3743 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3744 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3746 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3750 res
= Fcons (elt
, res
);
3753 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3754 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3757 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3760 res
= Fcons (elt
, res
);
3763 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3764 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3767 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3770 res
= Fcons (elt
, res
);
3774 return any
? res
: Qnil
;
3777 #endif /* HAVE_SOCKETS */
3779 /* Turn off input and output for process PROC. */
3782 deactivate_process (proc
)
3785 register int inchannel
, outchannel
;
3786 register struct Lisp_Process
*p
= XPROCESS (proc
);
3788 inchannel
= XINT (p
->infd
);
3789 outchannel
= XINT (p
->outfd
);
3791 #ifdef ADAPTIVE_READ_BUFFERING
3792 if (XINT (p
->read_output_delay
) > 0)
3794 if (--process_output_delay_count
< 0)
3795 process_output_delay_count
= 0;
3796 XSETINT (p
->read_output_delay
, 0);
3797 p
->read_output_skip
= Qnil
;
3803 /* Beware SIGCHLD hereabouts. */
3804 flush_pending_output (inchannel
);
3807 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3808 sys$
dassgn (outchannel
);
3809 vs
= get_vms_process_pointer (p
->pid
);
3811 give_back_vms_process_stuff (vs
);
3814 emacs_close (inchannel
);
3815 if (outchannel
>= 0 && outchannel
!= inchannel
)
3816 emacs_close (outchannel
);
3819 XSETINT (p
->infd
, -1);
3820 XSETINT (p
->outfd
, -1);
3821 #ifdef DATAGRAM_SOCKETS
3822 if (DATAGRAM_CHAN_P (inchannel
))
3824 xfree (datagram_address
[inchannel
].sa
);
3825 datagram_address
[inchannel
].sa
= 0;
3826 datagram_address
[inchannel
].len
= 0;
3829 chan_process
[inchannel
] = Qnil
;
3830 FD_CLR (inchannel
, &input_wait_mask
);
3831 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3832 #ifdef NON_BLOCKING_CONNECT
3833 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3835 FD_CLR (inchannel
, &connect_wait_mask
);
3836 if (--num_pending_connects
< 0)
3840 if (inchannel
== max_process_desc
)
3843 /* We just closed the highest-numbered process input descriptor,
3844 so recompute the highest-numbered one now. */
3845 max_process_desc
= 0;
3846 for (i
= 0; i
< MAXDESC
; i
++)
3847 if (!NILP (chan_process
[i
]))
3848 max_process_desc
= i
;
3853 /* Close all descriptors currently in use for communication
3854 with subprocess. This is used in a newly-forked subprocess
3855 to get rid of irrelevant descriptors. */
3858 close_process_descs ()
3862 for (i
= 0; i
< MAXDESC
; i
++)
3864 Lisp_Object process
;
3865 process
= chan_process
[i
];
3866 if (!NILP (process
))
3868 int in
= XINT (XPROCESS (process
)->infd
);
3869 int out
= XINT (XPROCESS (process
)->outfd
);
3872 if (out
>= 0 && in
!= out
)
3879 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3881 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3882 It is read into the process' buffers or given to their filter functions.
3883 Non-nil arg PROCESS means do not return until some output has been received
3886 Non-nil second arg SECONDS and third arg MILLISEC are number of
3887 seconds and milliseconds to wait; return after that much time whether
3888 or not there is input. If SECONDS is a floating point number,
3889 it specifies a fractional number of seconds to wait.
3891 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3892 from PROCESS, suspending reading output from other processes.
3893 If JUST-THIS-ONE is an integer, don't run any timers either.
3894 Return non-nil iff we received any output before the timeout expired. */)
3895 (process
, seconds
, millisec
, just_this_one
)
3896 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
3898 int secs
, usecs
= 0;
3900 if (! NILP (process
))
3901 CHECK_PROCESS (process
);
3903 just_this_one
= Qnil
;
3905 if (!NILP (seconds
))
3907 if (INTEGERP (seconds
))
3908 secs
= XINT (seconds
);
3909 else if (FLOATP (seconds
))
3911 double timeout
= XFLOAT_DATA (seconds
);
3912 secs
= (int) timeout
;
3913 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3916 wrong_type_argument (Qnumberp
, seconds
);
3918 if (INTEGERP (millisec
))
3921 usecs
+= XINT (millisec
) * 1000;
3922 carry
= usecs
/ 1000000;
3924 if ((usecs
-= carry
* 1000000) < 0)
3931 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3932 secs
= -1, usecs
= 0;
3935 secs
= NILP (process
) ? -1 : 0;
3938 (wait_reading_process_output (secs
, usecs
, 0, 0,
3940 !NILP (process
) ? XPROCESS (process
) : NULL
,
3941 NILP (just_this_one
) ? 0 :
3942 !INTEGERP (just_this_one
) ? 1 : -1)
3946 /* Accept a connection for server process SERVER on CHANNEL. */
3948 static int connect_counter
= 0;
3951 server_accept_connection (server
, channel
)
3955 Lisp_Object proc
, caller
, name
, buffer
;
3956 Lisp_Object contact
, host
, service
;
3957 struct Lisp_Process
*ps
= XPROCESS (server
);
3958 struct Lisp_Process
*p
;
3962 struct sockaddr_in in
;
3964 struct sockaddr_in6 in6
;
3966 #ifdef HAVE_LOCAL_SOCKETS
3967 struct sockaddr_un un
;
3970 int len
= sizeof saddr
;
3972 s
= accept (channel
, &saddr
.sa
, &len
);
3981 if (code
== EWOULDBLOCK
)
3985 if (!NILP (ps
->log
))
3986 call3 (ps
->log
, server
, Qnil
,
3987 concat3 (build_string ("accept failed with code"),
3988 Fnumber_to_string (make_number (code
)),
3989 build_string ("\n")));
3995 /* Setup a new process to handle the connection. */
3997 /* Generate a unique identification of the caller, and build contact
3998 information for this process. */
4001 switch (saddr
.sa
.sa_family
)
4005 Lisp_Object args
[5];
4006 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4007 args
[0] = build_string ("%d.%d.%d.%d");
4008 args
[1] = make_number (*ip
++);
4009 args
[2] = make_number (*ip
++);
4010 args
[3] = make_number (*ip
++);
4011 args
[4] = make_number (*ip
++);
4012 host
= Fformat (5, args
);
4013 service
= make_number (ntohs (saddr
.in
.sin_port
));
4015 args
[0] = build_string (" <%s:%d>");
4018 caller
= Fformat (3, args
);
4025 Lisp_Object args
[9];
4026 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4028 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4029 for (i
= 0; i
< 8; i
++)
4030 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4031 host
= Fformat (9, args
);
4032 service
= make_number (ntohs (saddr
.in
.sin_port
));
4034 args
[0] = build_string (" <[%s]:%d>");
4037 caller
= Fformat (3, args
);
4042 #ifdef HAVE_LOCAL_SOCKETS
4046 caller
= Fnumber_to_string (make_number (connect_counter
));
4047 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
4051 /* Create a new buffer name for this process if it doesn't have a
4052 filter. The new buffer name is based on the buffer name or
4053 process name of the server process concatenated with the caller
4056 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4060 buffer
= ps
->buffer
;
4062 buffer
= Fbuffer_name (buffer
);
4067 buffer
= concat2 (buffer
, caller
);
4068 buffer
= Fget_buffer_create (buffer
);
4072 /* Generate a unique name for the new server process. Combine the
4073 server process name with the caller identification. */
4075 name
= concat2 (ps
->name
, caller
);
4076 proc
= make_process (name
);
4078 chan_process
[s
] = proc
;
4081 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4084 fcntl (s
, F_SETFL
, O_NDELAY
);
4088 p
= XPROCESS (proc
);
4090 /* Build new contact information for this setup. */
4091 contact
= Fcopy_sequence (ps
->childp
);
4092 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4093 contact
= Fplist_put (contact
, QChost
, host
);
4094 if (!NILP (service
))
4095 contact
= Fplist_put (contact
, QCservice
, service
);
4096 contact
= Fplist_put (contact
, QCremote
,
4097 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4098 #ifdef HAVE_GETSOCKNAME
4100 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4101 contact
= Fplist_put (contact
, QClocal
,
4102 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4105 p
->childp
= contact
;
4106 p
->plist
= Fcopy_sequence (ps
->plist
);
4109 p
->sentinel
= ps
->sentinel
;
4110 p
->filter
= ps
->filter
;
4113 XSETINT (p
->infd
, s
);
4114 XSETINT (p
->outfd
, s
);
4117 /* Client processes for accepted connections are not stopped initially. */
4118 if (!EQ (p
->filter
, Qt
))
4120 FD_SET (s
, &input_wait_mask
);
4121 FD_SET (s
, &non_keyboard_wait_mask
);
4124 if (s
> max_process_desc
)
4125 max_process_desc
= s
;
4127 /* Setup coding system for new process based on server process.
4128 This seems to be the proper thing to do, as the coding system
4129 of the new process should reflect the settings at the time the
4130 server socket was opened; not the current settings. */
4132 p
->decode_coding_system
= ps
->decode_coding_system
;
4133 p
->encode_coding_system
= ps
->encode_coding_system
;
4134 setup_process_coding_systems (proc
);
4136 p
->decoding_buf
= make_uninit_string (0);
4137 p
->decoding_carryover
= make_number (0);
4138 p
->encoding_buf
= make_uninit_string (0);
4139 p
->encoding_carryover
= make_number (0);
4141 p
->inherit_coding_system_flag
4142 = (NILP (buffer
) ? Qnil
: ps
->inherit_coding_system_flag
);
4144 if (!NILP (ps
->log
))
4145 call3 (ps
->log
, server
, proc
,
4146 concat3 (build_string ("accept from "),
4147 (STRINGP (host
) ? host
: build_string ("-")),
4148 build_string ("\n")));
4150 if (!NILP (p
->sentinel
))
4151 exec_sentinel (proc
,
4152 concat3 (build_string ("open from "),
4153 (STRINGP (host
) ? host
: build_string ("-")),
4154 build_string ("\n")));
4157 /* This variable is different from waiting_for_input in keyboard.c.
4158 It is used to communicate to a lisp process-filter/sentinel (via the
4159 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4160 for user-input when that process-filter was called.
4161 waiting_for_input cannot be used as that is by definition 0 when
4162 lisp code is being evalled.
4163 This is also used in record_asynch_buffer_change.
4164 For that purpose, this must be 0
4165 when not inside wait_reading_process_output. */
4166 static int waiting_for_user_input_p
;
4169 wait_reading_process_output_unwind (data
)
4172 waiting_for_user_input_p
= XINT (data
);
4176 /* This is here so breakpoints can be put on it. */
4178 wait_reading_process_output_1 ()
4182 /* Use a wrapper around select to work around a bug in gdb 5.3.
4183 Normally, the wrapper is optimzed away by inlining.
4185 If emacs is stopped inside select, the gdb backtrace doesn't
4186 show the function which called select, so it is practically
4187 impossible to step through wait_reading_process_output. */
4191 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4193 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4196 return select (n
, rfd
, wfd
, xfd
, tmo
);
4198 #define select select_wrapper
4201 /* Read and dispose of subprocess output while waiting for timeout to
4202 elapse and/or keyboard input to be available.
4205 timeout in seconds, or
4206 zero for no limit, or
4207 -1 means gobble data immediately available but don't wait for any.
4210 an additional duration to wait, measured in microseconds.
4211 If this is nonzero and time_limit is 0, then the timeout
4212 consists of MICROSECS only.
4214 READ_KBD is a lisp value:
4215 0 to ignore keyboard input, or
4216 1 to return when input is available, or
4217 -1 meaning caller will actually read the input, so don't throw to
4218 the quit handler, or
4220 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4221 output that arrives.
4223 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4224 (and gobble terminal input into the buffer if any arrives).
4226 If WAIT_PROC is specified, wait until something arrives from that
4227 process. The return value is true iff we read some input from
4230 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4231 (suspending output from other processes). A negative value
4232 means don't run any timers either.
4234 If WAIT_PROC is specified, then the function returns true iff we
4235 received input from that process before the timeout elapsed.
4236 Otherwise, return true iff we received input from any process. */
4239 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4240 wait_for_cell
, wait_proc
, just_wait_proc
)
4241 int time_limit
, microsecs
, read_kbd
, do_display
;
4242 Lisp_Object wait_for_cell
;
4243 struct Lisp_Process
*wait_proc
;
4246 register int channel
, nfds
;
4247 SELECT_TYPE Available
;
4248 #ifdef NON_BLOCKING_CONNECT
4249 SELECT_TYPE Connecting
;
4252 int check_delay
, no_avail
;
4255 EMACS_TIME timeout
, end_time
;
4256 int wait_channel
= -1;
4257 int got_some_input
= 0;
4258 int count
= SPECPDL_INDEX ();
4260 FD_ZERO (&Available
);
4261 #ifdef NON_BLOCKING_CONNECT
4262 FD_ZERO (&Connecting
);
4265 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4266 if (wait_proc
!= NULL
)
4267 wait_channel
= XINT (wait_proc
->infd
);
4269 record_unwind_protect (wait_reading_process_output_unwind
,
4270 make_number (waiting_for_user_input_p
));
4271 waiting_for_user_input_p
= read_kbd
;
4273 /* Since we may need to wait several times,
4274 compute the absolute time to return at. */
4275 if (time_limit
|| microsecs
)
4277 EMACS_GET_TIME (end_time
);
4278 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4279 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4281 #ifdef POLL_INTERRUPTED_SYS_CALL
4282 /* AlainF 5-Jul-1996
4283 HP-UX 10.10 seem to have problems with signals coming in
4284 Causes "poll: interrupted system call" messages when Emacs is run
4286 Turn off periodic alarms (in case they are in use),
4287 and then turn off any other atimers. */
4289 turn_on_atimers (0);
4290 #endif /* POLL_INTERRUPTED_SYS_CALL */
4294 int timeout_reduced_for_timers
= 0;
4296 /* If calling from keyboard input, do not quit
4297 since we want to return C-g as an input character.
4298 Otherwise, do pending quit if requested. */
4302 else if (interrupt_input_pending
)
4303 handle_async_input ();
4306 /* Exit now if the cell we're waiting for became non-nil. */
4307 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4310 /* Compute time from now till when time limit is up */
4311 /* Exit if already run out */
4312 if (time_limit
== -1)
4314 /* -1 specified for timeout means
4315 gobble output available now
4316 but don't wait at all. */
4318 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4320 else if (time_limit
|| microsecs
)
4322 EMACS_GET_TIME (timeout
);
4323 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4324 if (EMACS_TIME_NEG_P (timeout
))
4329 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4332 /* Normally we run timers here.
4333 But not if wait_for_cell; in those cases,
4334 the wait is supposed to be short,
4335 and those callers cannot handle running arbitrary Lisp code here. */
4336 if (NILP (wait_for_cell
)
4337 && just_wait_proc
>= 0)
4339 EMACS_TIME timer_delay
;
4343 int old_timers_run
= timers_run
;
4344 struct buffer
*old_buffer
= current_buffer
;
4346 timer_delay
= timer_check (1);
4348 /* If a timer has run, this might have changed buffers
4349 an alike. Make read_key_sequence aware of that. */
4350 if (timers_run
!= old_timers_run
4351 && old_buffer
!= current_buffer
4352 && waiting_for_user_input_p
== -1)
4353 record_asynch_buffer_change ();
4355 if (timers_run
!= old_timers_run
&& do_display
)
4356 /* We must retry, since a timer may have requeued itself
4357 and that could alter the time_delay. */
4358 redisplay_preserve_echo_area (9);
4362 while (!detect_input_pending ());
4364 /* If there is unread keyboard input, also return. */
4366 && requeued_events_pending_p ())
4369 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4371 EMACS_TIME difference
;
4372 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4373 if (EMACS_TIME_NEG_P (difference
))
4375 timeout
= timer_delay
;
4376 timeout_reduced_for_timers
= 1;
4379 /* If time_limit is -1, we are not going to wait at all. */
4380 else if (time_limit
!= -1)
4382 /* This is so a breakpoint can be put here. */
4383 wait_reading_process_output_1 ();
4387 /* Cause C-g and alarm signals to take immediate action,
4388 and cause input available signals to zero out timeout.
4390 It is important that we do this before checking for process
4391 activity. If we get a SIGCHLD after the explicit checks for
4392 process activity, timeout is the only way we will know. */
4394 set_waiting_for_input (&timeout
);
4396 /* If status of something has changed, and no input is
4397 available, notify the user of the change right away. After
4398 this explicit check, we'll let the SIGCHLD handler zap
4399 timeout to get our attention. */
4400 if (update_tick
!= process_tick
&& do_display
)
4403 #ifdef NON_BLOCKING_CONNECT
4407 Atemp
= input_wait_mask
;
4409 /* On Mac OS X 10.0, the SELECT system call always says input is
4410 present (for reading) at stdin, even when none is. This
4411 causes the call to SELECT below to return 1 and
4412 status_notify not to be called. As a result output of
4413 subprocesses are incorrectly discarded.
4417 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4419 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4420 if ((select (max (max_process_desc
, max_keyboard_desc
) + 1,
4422 #ifdef NON_BLOCKING_CONNECT
4423 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4427 (SELECT_TYPE
*)0, &timeout
)
4430 /* It's okay for us to do this and then continue with
4431 the loop, since timeout has already been zeroed out. */
4432 clear_waiting_for_input ();
4433 status_notify (NULL
);
4437 /* Don't wait for output from a non-running process. Just
4438 read whatever data has already been received. */
4439 if (wait_proc
&& wait_proc
->raw_status_new
)
4440 update_status (wait_proc
);
4442 && ! EQ (wait_proc
->status
, Qrun
)
4443 && ! EQ (wait_proc
->status
, Qconnect
))
4445 int nread
, total_nread
= 0;
4447 clear_waiting_for_input ();
4448 XSETPROCESS (proc
, wait_proc
);
4450 /* Read data from the process, until we exhaust it. */
4451 while (XINT (wait_proc
->infd
) >= 0)
4453 nread
= read_process_output (proc
, XINT (wait_proc
->infd
));
4459 total_nread
+= nread
;
4461 else if (nread
== -1 && EIO
== errno
)
4465 else if (nread
== -1 && EAGAIN
== errno
)
4469 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4473 if (total_nread
> 0 && do_display
)
4474 redisplay_preserve_echo_area (10);
4479 /* Wait till there is something to do */
4481 if (wait_proc
&& just_wait_proc
)
4483 if (XINT (wait_proc
->infd
) < 0) /* Terminated */
4485 FD_SET (XINT (wait_proc
->infd
), &Available
);
4487 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4489 else if (!NILP (wait_for_cell
))
4491 Available
= non_process_wait_mask
;
4493 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4498 Available
= non_keyboard_wait_mask
;
4500 Available
= input_wait_mask
;
4501 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4502 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4505 /* If frame size has changed or the window is newly mapped,
4506 redisplay now, before we start to wait. There is a race
4507 condition here; if a SIGIO arrives between now and the select
4508 and indicates that a frame is trashed, the select may block
4509 displaying a trashed screen. */
4510 if (frame_garbaged
&& do_display
)
4512 clear_waiting_for_input ();
4513 redisplay_preserve_echo_area (11);
4515 set_waiting_for_input (&timeout
);
4519 if (read_kbd
&& detect_input_pending ())
4526 #ifdef NON_BLOCKING_CONNECT
4528 Connecting
= connect_wait_mask
;
4531 #ifdef ADAPTIVE_READ_BUFFERING
4532 /* Set the timeout for adaptive read buffering if any
4533 process has non-nil read_output_skip and non-zero
4534 read_output_delay, and we are not reading output for a
4535 specific wait_channel. It is not executed if
4536 Vprocess_adaptive_read_buffering is nil. */
4537 if (process_output_skip
&& check_delay
> 0)
4539 int usecs
= EMACS_USECS (timeout
);
4540 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4541 usecs
= READ_OUTPUT_DELAY_MAX
;
4542 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4544 proc
= chan_process
[channel
];
4547 /* Find minimum non-zero read_output_delay among the
4548 processes with non-nil read_output_skip. */
4549 if (XINT (XPROCESS (proc
)->read_output_delay
) > 0)
4552 if (NILP (XPROCESS (proc
)->read_output_skip
))
4554 FD_CLR (channel
, &Available
);
4555 XPROCESS (proc
)->read_output_skip
= Qnil
;
4556 if (XINT (XPROCESS (proc
)->read_output_delay
) < usecs
)
4557 usecs
= XINT (XPROCESS (proc
)->read_output_delay
);
4560 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4561 process_output_skip
= 0;
4565 nfds
= select (max (max_process_desc
, max_keyboard_desc
) + 1,
4567 #ifdef NON_BLOCKING_CONNECT
4568 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4572 (SELECT_TYPE
*)0, &timeout
);
4577 /* Make C-g and alarm signals set flags again */
4578 clear_waiting_for_input ();
4580 /* If we woke up due to SIGWINCH, actually change size now. */
4581 do_pending_window_change (0);
4583 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4584 /* We wanted the full specified time, so return now. */
4588 if (xerrno
== EINTR
)
4591 /* Ultrix select seems to return ENOMEM when it is
4592 interrupted. Treat it just like EINTR. Bleah. Note
4593 that we want to test for the "ultrix" CPP symbol, not
4594 "__ultrix__"; the latter is only defined under GCC, but
4595 not by DEC's bundled CC. -JimB */
4596 else if (xerrno
== ENOMEM
)
4600 /* This happens for no known reason on ALLIANT.
4601 I am guessing that this is the right response. -- RMS. */
4602 else if (xerrno
== EFAULT
)
4605 else if (xerrno
== EBADF
)
4608 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4609 the child's closure of the pts gives the parent a SIGHUP, and
4610 the ptc file descriptor is automatically closed,
4611 yielding EBADF here or at select() call above.
4612 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4613 in m/ibmrt-aix.h), and here we just ignore the select error.
4614 Cleanup occurs c/o status_notify after SIGCLD. */
4615 no_avail
= 1; /* Cannot depend on values returned */
4621 error ("select error: %s", emacs_strerror (xerrno
));
4626 FD_ZERO (&Available
);
4627 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4630 #if defined(sun) && !defined(USG5_4)
4631 if (nfds
> 0 && keyboard_bit_set (&Available
)
4633 /* System sometimes fails to deliver SIGIO.
4635 David J. Mackenzie says that Emacs doesn't compile under
4636 Solaris if this code is enabled, thus the USG5_4 in the CPP
4637 conditional. "I haven't noticed any ill effects so far.
4638 If you find a Solaris expert somewhere, they might know
4640 kill (getpid (), SIGIO
);
4643 #if 0 /* When polling is used, interrupt_input is 0,
4644 so get_input_pending should read the input.
4645 So this should not be needed. */
4646 /* If we are using polling for input,
4647 and we see input available, make it get read now.
4648 Otherwise it might not actually get read for a second.
4649 And on hpux, since we turn off polling in wait_reading_process_output,
4650 it might never get read at all if we don't spend much time
4651 outside of wait_reading_process_output. */
4652 if (read_kbd
&& interrupt_input
4653 && keyboard_bit_set (&Available
)
4654 && input_polling_used ())
4655 kill (getpid (), SIGALRM
);
4658 /* Check for keyboard input */
4659 /* If there is any, return immediately
4660 to give it higher priority than subprocesses */
4664 int old_timers_run
= timers_run
;
4665 struct buffer
*old_buffer
= current_buffer
;
4668 if (detect_input_pending_run_timers (do_display
))
4670 swallow_events (do_display
);
4671 if (detect_input_pending_run_timers (do_display
))
4675 /* If a timer has run, this might have changed buffers
4676 an alike. Make read_key_sequence aware of that. */
4677 if (timers_run
!= old_timers_run
4678 && waiting_for_user_input_p
== -1
4679 && old_buffer
!= current_buffer
)
4680 record_asynch_buffer_change ();
4686 /* If there is unread keyboard input, also return. */
4688 && requeued_events_pending_p ())
4691 /* If we are not checking for keyboard input now,
4692 do process events (but don't run any timers).
4693 This is so that X events will be processed.
4694 Otherwise they may have to wait until polling takes place.
4695 That would causes delays in pasting selections, for example.
4697 (We used to do this only if wait_for_cell.) */
4698 if (read_kbd
== 0 && detect_input_pending ())
4700 swallow_events (do_display
);
4701 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4702 if (detect_input_pending ())
4707 /* Exit now if the cell we're waiting for became non-nil. */
4708 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4712 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4713 go read it. This can happen with X on BSD after logging out.
4714 In that case, there really is no input and no SIGIO,
4715 but select says there is input. */
4717 if (read_kbd
&& interrupt_input
4718 && keyboard_bit_set (&Available
) && ! noninteractive
)
4719 kill (getpid (), SIGIO
);
4723 got_some_input
|= nfds
> 0;
4725 /* If checking input just got us a size-change event from X,
4726 obey it now if we should. */
4727 if (read_kbd
|| ! NILP (wait_for_cell
))
4728 do_pending_window_change (0);
4730 /* Check for data from a process. */
4731 if (no_avail
|| nfds
== 0)
4734 /* Really FIRST_PROC_DESC should be 0 on Unix,
4735 but this is safer in the short run. */
4736 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4738 if (FD_ISSET (channel
, &Available
)
4739 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4743 /* If waiting for this channel, arrange to return as
4744 soon as no more input to be processed. No more
4746 if (wait_channel
== channel
)
4752 proc
= chan_process
[channel
];
4756 /* If this is a server stream socket, accept connection. */
4757 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4759 server_accept_connection (proc
, channel
);
4763 /* Read data from the process, starting with our
4764 buffered-ahead character if we have one. */
4766 nread
= read_process_output (proc
, channel
);
4769 /* Since read_process_output can run a filter,
4770 which can call accept-process-output,
4771 don't try to read from any other processes
4772 before doing the select again. */
4773 FD_ZERO (&Available
);
4776 redisplay_preserve_echo_area (12);
4779 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4782 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4783 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4785 else if (nread
== -1 && errno
== EAGAIN
)
4789 else if (nread
== -1 && errno
== EAGAIN
)
4791 /* Note that we cannot distinguish between no input
4792 available now and a closed pipe.
4793 With luck, a closed pipe will be accompanied by
4794 subprocess termination and SIGCHLD. */
4795 else if (nread
== 0 && !NETCONN_P (proc
))
4797 #endif /* O_NDELAY */
4798 #endif /* O_NONBLOCK */
4800 /* On some OSs with ptys, when the process on one end of
4801 a pty exits, the other end gets an error reading with
4802 errno = EIO instead of getting an EOF (0 bytes read).
4803 Therefore, if we get an error reading and errno =
4804 EIO, just continue, because the child process has
4805 exited and should clean itself up soon (e.g. when we
4808 However, it has been known to happen that the SIGCHLD
4809 got lost. So raise the signl again just in case.
4811 else if (nread
== -1 && errno
== EIO
)
4812 kill (getpid (), SIGCHLD
);
4813 #endif /* HAVE_PTYS */
4814 /* If we can detect process termination, don't consider the process
4815 gone just because its pipe is closed. */
4817 else if (nread
== 0 && !NETCONN_P (proc
))
4822 /* Preserve status of processes already terminated. */
4823 XSETINT (XPROCESS (proc
)->tick
, ++process_tick
);
4824 deactivate_process (proc
);
4825 if (XPROCESS (proc
)->raw_status_new
)
4826 update_status (XPROCESS (proc
));
4827 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4828 XPROCESS (proc
)->status
4829 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4832 #ifdef NON_BLOCKING_CONNECT
4833 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4834 && FD_ISSET (channel
, &connect_wait_mask
))
4836 struct Lisp_Process
*p
;
4838 FD_CLR (channel
, &connect_wait_mask
);
4839 if (--num_pending_connects
< 0)
4842 proc
= chan_process
[channel
];
4846 p
= XPROCESS (proc
);
4849 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4850 So only use it on systems where it is known to work. */
4852 int xlen
= sizeof(xerrno
);
4853 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4858 struct sockaddr pname
;
4859 int pnamelen
= sizeof(pname
);
4861 /* If connection failed, getpeername will fail. */
4863 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4865 /* Obtain connect failure code through error slippage. */
4868 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4875 XSETINT (p
->tick
, ++process_tick
);
4876 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4877 deactivate_process (proc
);
4882 /* Execute the sentinel here. If we had relied on
4883 status_notify to do it later, it will read input
4884 from the process before calling the sentinel. */
4885 exec_sentinel (proc
, build_string ("open\n"));
4886 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4888 FD_SET (XINT (p
->infd
), &input_wait_mask
);
4889 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
4893 #endif /* NON_BLOCKING_CONNECT */
4894 } /* end for each file descriptor */
4895 } /* end while exit conditions not met */
4897 unbind_to (count
, Qnil
);
4899 /* If calling from keyboard input, do not quit
4900 since we want to return C-g as an input character.
4901 Otherwise, do pending quit if requested. */
4904 /* Prevent input_pending from remaining set if we quit. */
4905 clear_input_pending ();
4908 #ifdef POLL_INTERRUPTED_SYS_CALL
4909 /* AlainF 5-Jul-1996
4910 HP-UX 10.10 seems to have problems with signals coming in
4911 Causes "poll: interrupted system call" messages when Emacs is run
4913 Turn periodic alarms back on */
4915 #endif /* POLL_INTERRUPTED_SYS_CALL */
4917 return got_some_input
;
4920 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4923 read_process_output_call (fun_and_args
)
4924 Lisp_Object fun_and_args
;
4926 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4930 read_process_output_error_handler (error
)
4933 cmd_error_internal (error
, "error in process filter: ");
4935 update_echo_area ();
4936 Fsleep_for (make_number (2), Qnil
);
4940 /* Read pending output from the process channel,
4941 starting with our buffered-ahead character if we have one.
4942 Yield number of decoded characters read.
4944 This function reads at most 4096 characters.
4945 If you want to read all available subprocess output,
4946 you must call it repeatedly until it returns zero.
4948 The characters read are decoded according to PROC's coding-system
4952 read_process_output (proc
, channel
)
4954 register int channel
;
4956 register int nbytes
;
4958 register Lisp_Object outstream
;
4959 register struct buffer
*old
= current_buffer
;
4960 register struct Lisp_Process
*p
= XPROCESS (proc
);
4961 register int opoint
;
4962 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4963 int carryover
= XINT (p
->decoding_carryover
);
4967 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
4969 vs
= get_vms_process_pointer (p
->pid
);
4973 return (0); /* Really weird if it does this */
4974 if (!(vs
->iosb
[0] & 1))
4975 return -1; /* I/O error */
4978 error ("Could not get VMS process pointer");
4979 chars
= vs
->inputBuffer
;
4980 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
4983 start_vms_process_read (vs
); /* Crank up the next read on the process */
4984 return 1; /* Nothing worth printing, say we got 1 */
4988 /* The data carried over in the previous decoding (which are at
4989 the tail of decoding buffer) should be prepended to the new
4990 data read to decode all together. */
4991 chars
= (char *) alloca (nbytes
+ carryover
);
4992 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
4993 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
4997 chars
= (char *) alloca (carryover
+ readmax
);
4999 /* See the comment above. */
5000 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5002 #ifdef DATAGRAM_SOCKETS
5003 /* We have a working select, so proc_buffered_char is always -1. */
5004 if (DATAGRAM_CHAN_P (channel
))
5006 int len
= datagram_address
[channel
].len
;
5007 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5008 0, datagram_address
[channel
].sa
, &len
);
5012 if (proc_buffered_char
[channel
] < 0)
5014 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5015 #ifdef ADAPTIVE_READ_BUFFERING
5016 if (nbytes
> 0 && !NILP (p
->adaptive_read_buffering
))
5018 int delay
= XINT (p
->read_output_delay
);
5021 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5024 process_output_delay_count
++;
5025 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5028 else if (delay
> 0 && (nbytes
== readmax
))
5030 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5032 process_output_delay_count
--;
5034 XSETINT (p
->read_output_delay
, delay
);
5037 p
->read_output_skip
= Qt
;
5038 process_output_skip
= 1;
5045 chars
[carryover
] = proc_buffered_char
[channel
];
5046 proc_buffered_char
[channel
] = -1;
5047 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5051 nbytes
= nbytes
+ 1;
5053 #endif /* not VMS */
5055 XSETINT (p
->decoding_carryover
, 0);
5057 /* At this point, NBYTES holds number of bytes just received
5058 (including the one in proc_buffered_char[channel]). */
5061 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5063 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5066 /* Now set NBYTES how many bytes we must decode. */
5067 nbytes
+= carryover
;
5069 /* Read and dispose of the process output. */
5070 outstream
= p
->filter
;
5071 if (!NILP (outstream
))
5073 /* We inhibit quit here instead of just catching it so that
5074 hitting ^G when a filter happens to be running won't screw
5076 int count
= SPECPDL_INDEX ();
5077 Lisp_Object odeactivate
;
5078 Lisp_Object obuffer
, okeymap
;
5080 int outer_running_asynch_code
= running_asynch_code
;
5081 int waiting
= waiting_for_user_input_p
;
5083 /* No need to gcpro these, because all we do with them later
5084 is test them for EQness, and none of them should be a string. */
5085 odeactivate
= Vdeactivate_mark
;
5086 XSETBUFFER (obuffer
, current_buffer
);
5087 okeymap
= current_buffer
->keymap
;
5089 specbind (Qinhibit_quit
, Qt
);
5090 specbind (Qlast_nonmenu_event
, Qt
);
5092 /* In case we get recursively called,
5093 and we already saved the match data nonrecursively,
5094 save the same match data in safely recursive fashion. */
5095 if (outer_running_asynch_code
)
5098 /* Don't clobber the CURRENT match data, either! */
5099 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5100 restore_search_regs ();
5101 record_unwind_save_match_data ();
5102 Fset_match_data (tem
, Qt
);
5105 /* For speed, if a search happens within this code,
5106 save the match data in a special nonrecursive fashion. */
5107 running_asynch_code
= 1;
5109 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5111 Vlast_coding_system_used
= coding
->symbol
;
5112 /* A new coding system might be found. */
5113 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5115 p
->decode_coding_system
= coding
->symbol
;
5117 /* Don't call setup_coding_system for
5118 proc_decode_coding_system[channel] here. It is done in
5119 detect_coding called via decode_coding above. */
5121 /* If a coding system for encoding is not yet decided, we set
5122 it as the same as coding-system for decoding.
5124 But, before doing that we must check if
5125 proc_encode_coding_system[p->outfd] surely points to a
5126 valid memory because p->outfd will be changed once EOF is
5127 sent to the process. */
5128 if (NILP (p
->encode_coding_system
)
5129 && proc_encode_coding_system
[XINT (p
->outfd
)])
5131 p
->encode_coding_system
= coding
->symbol
;
5132 setup_coding_system (coding
->symbol
,
5133 proc_encode_coding_system
[XINT (p
->outfd
)]);
5134 if (proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5135 == CODING_EOL_UNDECIDED
)
5136 proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5141 carryover
= nbytes
- coding
->consumed
;
5142 if (SCHARS (p
->decoding_buf
) < carryover
)
5143 p
->decoding_buf
= make_uninit_string (carryover
);
5144 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5146 XSETINT (p
->decoding_carryover
, carryover
);
5147 /* Adjust the multibyteness of TEXT to that of the filter. */
5148 if (NILP (p
->filter_multibyte
) != ! STRING_MULTIBYTE (text
))
5149 text
= (STRING_MULTIBYTE (text
)
5150 ? Fstring_as_unibyte (text
)
5151 : Fstring_to_multibyte (text
));
5152 if (SBYTES (text
) > 0)
5153 internal_condition_case_1 (read_process_output_call
,
5155 Fcons (proc
, Fcons (text
, Qnil
))),
5156 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5157 read_process_output_error_handler
);
5159 /* If we saved the match data nonrecursively, restore it now. */
5160 restore_search_regs ();
5161 running_asynch_code
= outer_running_asynch_code
;
5163 /* Handling the process output should not deactivate the mark. */
5164 Vdeactivate_mark
= odeactivate
;
5166 /* Restore waiting_for_user_input_p as it was
5167 when we were called, in case the filter clobbered it. */
5168 waiting_for_user_input_p
= waiting
;
5170 #if 0 /* Call record_asynch_buffer_change unconditionally,
5171 because we might have changed minor modes or other things
5172 that affect key bindings. */
5173 if (! EQ (Fcurrent_buffer (), obuffer
)
5174 || ! EQ (current_buffer
->keymap
, okeymap
))
5176 /* But do it only if the caller is actually going to read events.
5177 Otherwise there's no need to make him wake up, and it could
5178 cause trouble (for example it would make sit_for return). */
5179 if (waiting_for_user_input_p
== -1)
5180 record_asynch_buffer_change ();
5183 start_vms_process_read (vs
);
5185 unbind_to (count
, Qnil
);
5189 /* If no filter, write into buffer if it isn't dead. */
5190 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5192 Lisp_Object old_read_only
;
5193 int old_begv
, old_zv
;
5194 int old_begv_byte
, old_zv_byte
;
5195 Lisp_Object odeactivate
;
5196 int before
, before_byte
;
5201 odeactivate
= Vdeactivate_mark
;
5203 Fset_buffer (p
->buffer
);
5205 opoint_byte
= PT_BYTE
;
5206 old_read_only
= current_buffer
->read_only
;
5209 old_begv_byte
= BEGV_BYTE
;
5210 old_zv_byte
= ZV_BYTE
;
5212 current_buffer
->read_only
= Qnil
;
5214 /* Insert new output into buffer
5215 at the current end-of-output marker,
5216 thus preserving logical ordering of input and output. */
5217 if (XMARKER (p
->mark
)->buffer
)
5218 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5219 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5222 SET_PT_BOTH (ZV
, ZV_BYTE
);
5224 before_byte
= PT_BYTE
;
5226 /* If the output marker is outside of the visible region, save
5227 the restriction and widen. */
5228 if (! (BEGV
<= PT
&& PT
<= ZV
))
5231 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5233 Vlast_coding_system_used
= coding
->symbol
;
5234 /* A new coding system might be found. See the comment in the
5235 similar code in the previous `if' block. */
5236 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5238 p
->decode_coding_system
= coding
->symbol
;
5239 if (NILP (p
->encode_coding_system
)
5240 && proc_encode_coding_system
[XINT (p
->outfd
)])
5242 p
->encode_coding_system
= coding
->symbol
;
5243 setup_coding_system (coding
->symbol
,
5244 proc_encode_coding_system
[XINT (p
->outfd
)]);
5245 if (proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5246 == CODING_EOL_UNDECIDED
)
5247 proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5251 carryover
= nbytes
- coding
->consumed
;
5252 if (SCHARS (p
->decoding_buf
) < carryover
)
5253 p
->decoding_buf
= make_uninit_string (carryover
);
5254 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5256 XSETINT (p
->decoding_carryover
, carryover
);
5257 /* Adjust the multibyteness of TEXT to that of the buffer. */
5258 if (NILP (current_buffer
->enable_multibyte_characters
)
5259 != ! STRING_MULTIBYTE (text
))
5260 text
= (STRING_MULTIBYTE (text
)
5261 ? Fstring_as_unibyte (text
)
5262 : Fstring_to_multibyte (text
));
5263 /* Insert before markers in case we are inserting where
5264 the buffer's mark is, and the user's next command is Meta-y. */
5265 insert_from_string_before_markers (text
, 0, 0,
5266 SCHARS (text
), SBYTES (text
), 0);
5268 /* Make sure the process marker's position is valid when the
5269 process buffer is changed in the signal_after_change above.
5270 W3 is known to do that. */
5271 if (BUFFERP (p
->buffer
)
5272 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5273 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5275 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5277 update_mode_lines
++;
5279 /* Make sure opoint and the old restrictions
5280 float ahead of any new text just as point would. */
5281 if (opoint
>= before
)
5283 opoint
+= PT
- before
;
5284 opoint_byte
+= PT_BYTE
- before_byte
;
5286 if (old_begv
> before
)
5288 old_begv
+= PT
- before
;
5289 old_begv_byte
+= PT_BYTE
- before_byte
;
5291 if (old_zv
>= before
)
5293 old_zv
+= PT
- before
;
5294 old_zv_byte
+= PT_BYTE
- before_byte
;
5297 /* If the restriction isn't what it should be, set it. */
5298 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5299 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5301 /* Handling the process output should not deactivate the mark. */
5302 Vdeactivate_mark
= odeactivate
;
5304 current_buffer
->read_only
= old_read_only
;
5305 SET_PT_BOTH (opoint
, opoint_byte
);
5306 set_buffer_internal (old
);
5309 start_vms_process_read (vs
);
5314 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5316 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5317 This is intended for use by asynchronous process output filters and sentinels. */)
5320 return (waiting_for_user_input_p
? Qt
: Qnil
);
5323 /* Sending data to subprocess */
5325 jmp_buf send_process_frame
;
5326 Lisp_Object process_sent_to
;
5329 send_process_trap ()
5331 SIGNAL_THREAD_CHECK (SIGPIPE
);
5336 sigunblock (sigmask (SIGPIPE
));
5337 longjmp (send_process_frame
, 1);
5340 /* Send some data to process PROC.
5341 BUF is the beginning of the data; LEN is the number of characters.
5342 OBJECT is the Lisp object that the data comes from. If OBJECT is
5343 nil or t, it means that the data comes from C string.
5345 If OBJECT is not nil, the data is encoded by PROC's coding-system
5346 for encoding before it is sent.
5348 This function can evaluate Lisp code and can garbage collect. */
5351 send_process (proc
, buf
, len
, object
)
5352 volatile Lisp_Object proc
;
5353 unsigned char *volatile buf
;
5355 volatile Lisp_Object object
;
5357 /* Use volatile to protect variables from being clobbered by longjmp. */
5358 struct Lisp_Process
*p
= XPROCESS (proc
);
5360 struct coding_system
*coding
;
5361 struct gcpro gcpro1
;
5362 SIGTYPE (*volatile old_sigpipe
) ();
5367 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5370 if (p
->raw_status_new
)
5372 if (! EQ (p
->status
, Qrun
))
5373 error ("Process %s not running", SDATA (p
->name
));
5374 if (XINT (p
->outfd
) < 0)
5375 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5377 coding
= proc_encode_coding_system
[XINT (p
->outfd
)];
5378 Vlast_coding_system_used
= coding
->symbol
;
5380 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5381 || (BUFFERP (object
)
5382 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5385 if (!EQ (coding
->symbol
, p
->encode_coding_system
))
5386 /* The coding system for encoding was changed to raw-text
5387 because we sent a unibyte text previously. Now we are
5388 sending a multibyte text, thus we must encode it by the
5389 original coding system specified for the current process. */
5390 setup_coding_system (p
->encode_coding_system
, coding
);
5391 if (coding
->eol_type
== CODING_EOL_UNDECIDED
)
5392 coding
->eol_type
= system_eol_type
;
5393 /* src_multibyte should be set to 1 _after_ a call to
5394 setup_coding_system, since it resets src_multibyte to
5396 coding
->src_multibyte
= 1;
5400 /* For sending a unibyte text, character code conversion should
5401 not take place but EOL conversion should. So, setup raw-text
5402 or one of the subsidiary if we have not yet done it. */
5403 if (coding
->type
!= coding_type_raw_text
)
5405 if (CODING_REQUIRE_FLUSHING (coding
))
5407 /* But, before changing the coding, we must flush out data. */
5408 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5409 send_process (proc
, "", 0, Qt
);
5411 coding
->src_multibyte
= 0;
5412 setup_raw_text_coding_system (coding
);
5415 coding
->dst_multibyte
= 0;
5417 if (CODING_REQUIRE_ENCODING (coding
))
5419 int require
= encoding_buffer_size (coding
, len
);
5420 int from_byte
= -1, from
= -1, to
= -1;
5422 if (BUFFERP (object
))
5424 from_byte
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5425 from
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
);
5426 to
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
+ len
);
5428 else if (STRINGP (object
))
5430 from_byte
= buf
- SDATA (object
);
5431 from
= string_byte_to_char (object
, from_byte
);
5432 to
= string_byte_to_char (object
, from_byte
+ len
);
5435 if (coding
->composing
!= COMPOSITION_DISABLED
)
5438 coding_save_composition (coding
, from
, to
, object
);
5440 coding
->composing
= COMPOSITION_DISABLED
;
5443 if (SBYTES (p
->encoding_buf
) < require
)
5444 p
->encoding_buf
= make_uninit_string (require
);
5447 buf
= (BUFFERP (object
)
5448 ? BUF_BYTE_ADDRESS (XBUFFER (object
), from_byte
)
5449 : SDATA (object
) + from_byte
);
5451 object
= p
->encoding_buf
;
5452 encode_coding (coding
, (char *) buf
, SDATA (object
),
5453 len
, SBYTES (object
));
5454 coding_free_composition_data (coding
);
5455 len
= coding
->produced
;
5456 buf
= SDATA (object
);
5460 vs
= get_vms_process_pointer (p
->pid
);
5462 error ("Could not find this process: %x", p
->pid
);
5463 else if (write_to_vms_process (vs
, buf
, len
))
5467 if (pty_max_bytes
== 0)
5469 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5470 pty_max_bytes
= fpathconf (XFASTINT (p
->outfd
), _PC_MAX_CANON
);
5471 if (pty_max_bytes
< 0)
5472 pty_max_bytes
= 250;
5474 pty_max_bytes
= 250;
5476 /* Deduct one, to leave space for the eof. */
5480 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5481 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5482 when returning with longjmp despite being declared volatile. */
5483 if (!setjmp (send_process_frame
))
5485 process_sent_to
= proc
;
5490 /* Decide how much data we can send in one batch.
5491 Long lines need to be split into multiple batches. */
5492 if (!NILP (p
->pty_flag
))
5494 /* Starting this at zero is always correct when not the first
5495 iteration because the previous iteration ended by sending C-d.
5496 It may not be correct for the first iteration
5497 if a partial line was sent in a separate send_process call.
5498 If that proves worth handling, we need to save linepos
5499 in the process object. */
5501 unsigned char *ptr
= (unsigned char *) buf
;
5502 unsigned char *end
= (unsigned char *) buf
+ len
;
5504 /* Scan through this text for a line that is too long. */
5505 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5513 /* If we found one, break the line there
5514 and put in a C-d to force the buffer through. */
5518 /* Send this batch, using one or more write calls. */
5521 int outfd
= XINT (p
->outfd
);
5522 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5523 #ifdef DATAGRAM_SOCKETS
5524 if (DATAGRAM_CHAN_P (outfd
))
5526 rv
= sendto (outfd
, (char *) buf
, this,
5527 0, datagram_address
[outfd
].sa
,
5528 datagram_address
[outfd
].len
);
5529 if (rv
< 0 && errno
== EMSGSIZE
)
5531 signal (SIGPIPE
, old_sigpipe
);
5532 report_file_error ("sending datagram",
5533 Fcons (proc
, Qnil
));
5539 rv
= emacs_write (outfd
, (char *) buf
, this);
5540 #ifdef ADAPTIVE_READ_BUFFERING
5541 if (XINT (p
->read_output_delay
) > 0
5542 && EQ (p
->adaptive_read_buffering
, Qt
))
5544 XSETFASTINT (p
->read_output_delay
, 0);
5545 process_output_delay_count
--;
5546 p
->read_output_skip
= Qnil
;
5550 signal (SIGPIPE
, old_sigpipe
);
5556 || errno
== EWOULDBLOCK
5562 /* Buffer is full. Wait, accepting input;
5563 that may allow the program
5564 to finish doing output and read more. */
5568 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5569 /* A gross hack to work around a bug in FreeBSD.
5570 In the following sequence, read(2) returns
5574 write(2) 954 bytes, get EAGAIN
5575 read(2) 1024 bytes in process_read_output
5576 read(2) 11 bytes in process_read_output
5578 That is, read(2) returns more bytes than have
5579 ever been written successfully. The 1033 bytes
5580 read are the 1022 bytes written successfully
5581 after processing (for example with CRs added if
5582 the terminal is set up that way which it is
5583 here). The same bytes will be seen again in a
5584 later read(2), without the CRs. */
5586 if (errno
== EAGAIN
)
5589 ioctl (XINT (p
->outfd
), TIOCFLUSH
, &flags
);
5591 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5593 /* Running filters might relocate buffers or strings.
5594 Arrange to relocate BUF. */
5595 if (BUFFERP (object
))
5596 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5597 else if (STRINGP (object
))
5598 offset
= buf
- SDATA (object
);
5600 #ifdef EMACS_HAS_USECS
5601 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5603 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5606 if (BUFFERP (object
))
5607 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5608 else if (STRINGP (object
))
5609 buf
= offset
+ SDATA (object
);
5614 /* This is a real error. */
5615 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5622 /* If we sent just part of the string, put in an EOF
5623 to force it through, before we send the rest. */
5625 Fprocess_send_eof (proc
);
5628 #endif /* not VMS */
5631 signal (SIGPIPE
, old_sigpipe
);
5633 proc
= process_sent_to
;
5634 p
= XPROCESS (proc
);
5636 p
->raw_status_new
= 0;
5637 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5638 XSETINT (p
->tick
, ++process_tick
);
5639 deactivate_process (proc
);
5641 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5643 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5650 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5652 doc
: /* Send current contents of region as input to PROCESS.
5653 PROCESS may be a process, a buffer, the name of a process or buffer, or
5654 nil, indicating the current buffer's process.
5655 Called from program, takes three arguments, PROCESS, START and END.
5656 If the region is more than 500 characters long,
5657 it is sent in several bunches. This may happen even for shorter regions.
5658 Output from processes can arrive in between bunches. */)
5659 (process
, start
, end
)
5660 Lisp_Object process
, start
, end
;
5665 proc
= get_process (process
);
5666 validate_region (&start
, &end
);
5668 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5669 move_gap (XINT (start
));
5671 start1
= CHAR_TO_BYTE (XINT (start
));
5672 end1
= CHAR_TO_BYTE (XINT (end
));
5673 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5674 Fcurrent_buffer ());
5679 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5681 doc
: /* Send PROCESS the contents of STRING as input.
5682 PROCESS may be a process, a buffer, the name of a process or buffer, or
5683 nil, indicating the current buffer's process.
5684 If STRING is more than 500 characters long,
5685 it is sent in several bunches. This may happen even for shorter strings.
5686 Output from processes can arrive in between bunches. */)
5688 Lisp_Object process
, string
;
5691 CHECK_STRING (string
);
5692 proc
= get_process (process
);
5693 send_process (proc
, SDATA (string
),
5694 SBYTES (string
), string
);
5698 /* Return the foreground process group for the tty/pty that
5699 the process P uses. */
5701 emacs_get_tty_pgrp (p
)
5702 struct Lisp_Process
*p
;
5707 if (ioctl (XINT (p
->infd
), TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5710 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5711 master side. Try the slave side. */
5712 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5716 ioctl (fd
, TIOCGPGRP
, &gid
);
5720 #endif /* defined (TIOCGPGRP ) */
5725 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5726 Sprocess_running_child_p
, 0, 1, 0,
5727 doc
: /* Return t if PROCESS has given the terminal to a child.
5728 If the operating system does not make it possible to find out,
5729 return t unconditionally. */)
5731 Lisp_Object process
;
5733 /* Initialize in case ioctl doesn't exist or gives an error,
5734 in a way that will cause returning t. */
5737 struct Lisp_Process
*p
;
5739 proc
= get_process (process
);
5740 p
= XPROCESS (proc
);
5742 if (!EQ (p
->childp
, Qt
))
5743 error ("Process %s is not a subprocess",
5745 if (XINT (p
->infd
) < 0)
5746 error ("Process %s is not active",
5749 gid
= emacs_get_tty_pgrp (p
);
5756 /* send a signal number SIGNO to PROCESS.
5757 If CURRENT_GROUP is t, that means send to the process group
5758 that currently owns the terminal being used to communicate with PROCESS.
5759 This is used for various commands in shell mode.
5760 If CURRENT_GROUP is lambda, that means send to the process group
5761 that currently owns the terminal, but only if it is NOT the shell itself.
5763 If NOMSG is zero, insert signal-announcements into process's buffers
5766 If we can, we try to signal PROCESS by sending control characters
5767 down the pty. This allows us to signal inferiors who have changed
5768 their uid, for which killpg would return an EPERM error. */
5771 process_send_signal (process
, signo
, current_group
, nomsg
)
5772 Lisp_Object process
;
5774 Lisp_Object current_group
;
5778 register struct Lisp_Process
*p
;
5782 proc
= get_process (process
);
5783 p
= XPROCESS (proc
);
5785 if (!EQ (p
->childp
, Qt
))
5786 error ("Process %s is not a subprocess",
5788 if (XINT (p
->infd
) < 0)
5789 error ("Process %s is not active",
5792 if (NILP (p
->pty_flag
))
5793 current_group
= Qnil
;
5795 /* If we are using pgrps, get a pgrp number and make it negative. */
5796 if (NILP (current_group
))
5797 /* Send the signal to the shell's process group. */
5801 #ifdef SIGNALS_VIA_CHARACTERS
5802 /* If possible, send signals to the entire pgrp
5803 by sending an input character to it. */
5805 /* TERMIOS is the latest and bestest, and seems most likely to
5806 work. If the system has it, use it. */
5809 cc_t
*sig_char
= NULL
;
5811 tcgetattr (XINT (p
->infd
), &t
);
5816 sig_char
= &t
.c_cc
[VINTR
];
5820 sig_char
= &t
.c_cc
[VQUIT
];
5824 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5825 sig_char
= &t
.c_cc
[VSWTCH
];
5827 sig_char
= &t
.c_cc
[VSUSP
];
5832 if (sig_char
&& *sig_char
!= CDISABLE
)
5834 send_process (proc
, sig_char
, 1, Qnil
);
5837 /* If we can't send the signal with a character,
5838 fall through and send it another way. */
5839 #else /* ! HAVE_TERMIOS */
5841 /* On Berkeley descendants, the following IOCTL's retrieve the
5842 current control characters. */
5843 #if defined (TIOCGLTC) && defined (TIOCGETC)
5851 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5852 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5855 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5856 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5860 ioctl (XINT (p
->infd
), TIOCGLTC
, &lc
);
5861 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5863 #endif /* ! defined (SIGTSTP) */
5866 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5868 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5875 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5876 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5879 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5880 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5884 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5885 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5887 #endif /* ! defined (SIGTSTP) */
5889 #else /* ! defined (TCGETA) */
5890 Your configuration files are messed up
.
5891 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
5892 you'd better be using one of the alternatives above! */
5893 #endif /* ! defined (TCGETA) */
5894 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5895 /* In this case, the code above should alway returns. */
5897 #endif /* ! defined HAVE_TERMIOS */
5899 /* The code above may fall through if it can't
5900 handle the signal. */
5901 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5904 /* Get the current pgrp using the tty itself, if we have that.
5905 Otherwise, use the pty to get the pgrp.
5906 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5907 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5908 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5909 His patch indicates that if TIOCGPGRP returns an error, then
5910 we should just assume that p->pid is also the process group id. */
5912 gid
= emacs_get_tty_pgrp (p
);
5915 /* If we can't get the information, assume
5916 the shell owns the tty. */
5919 /* It is not clear whether anything really can set GID to -1.
5920 Perhaps on some system one of those ioctls can or could do so.
5921 Or perhaps this is vestigial. */
5924 #else /* ! defined (TIOCGPGRP ) */
5925 /* Can't select pgrps on this system, so we know that
5926 the child itself heads the pgrp. */
5928 #endif /* ! defined (TIOCGPGRP ) */
5930 /* If current_group is lambda, and the shell owns the terminal,
5931 don't send any signal. */
5932 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
5940 p
->raw_status_new
= 0;
5942 XSETINT (p
->tick
, ++process_tick
);
5944 status_notify (NULL
);
5946 #endif /* ! defined (SIGCONT) */
5949 send_process (proc
, "\003", 1, Qnil
); /* ^C */
5954 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
5959 sys$
forcex (&(p
->pid
), 0, 1);
5962 flush_pending_output (XINT (p
->infd
));
5966 /* If we don't have process groups, send the signal to the immediate
5967 subprocess. That isn't really right, but it's better than any
5968 obvious alternative. */
5971 kill (p
->pid
, signo
);
5975 /* gid may be a pid, or minus a pgrp's number */
5977 if (!NILP (current_group
))
5979 if (ioctl (XINT (p
->infd
), TIOCSIGSEND
, signo
) == -1)
5980 EMACS_KILLPG (gid
, signo
);
5987 #else /* ! defined (TIOCSIGSEND) */
5988 EMACS_KILLPG (gid
, signo
);
5989 #endif /* ! defined (TIOCSIGSEND) */
5992 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5993 doc
: /* Interrupt process PROCESS.
5994 PROCESS may be a process, a buffer, or the name of a process or buffer.
5995 No arg or nil means current buffer's process.
5996 Second arg CURRENT-GROUP non-nil means send signal to
5997 the current process-group of the process's controlling terminal
5998 rather than to the process's own process group.
5999 If the process is a shell, this means interrupt current subjob
6000 rather than the shell.
6002 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6003 don't send the signal. */)
6004 (process
, current_group
)
6005 Lisp_Object process
, current_group
;
6007 process_send_signal (process
, SIGINT
, current_group
, 0);
6011 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6012 doc
: /* Kill process PROCESS. May be process or name of one.
6013 See function `interrupt-process' for more details on usage. */)
6014 (process
, current_group
)
6015 Lisp_Object process
, current_group
;
6017 process_send_signal (process
, SIGKILL
, current_group
, 0);
6021 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6022 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6023 See function `interrupt-process' for more details on usage. */)
6024 (process
, current_group
)
6025 Lisp_Object process
, current_group
;
6027 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6031 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6032 doc
: /* Stop process PROCESS. May be process or name of one.
6033 See function `interrupt-process' for more details on usage.
6034 If PROCESS is a network process, inhibit handling of incoming traffic. */)
6035 (process
, current_group
)
6036 Lisp_Object process
, current_group
;
6039 if (PROCESSP (process
) && NETCONN_P (process
))
6041 struct Lisp_Process
*p
;
6043 p
= XPROCESS (process
);
6044 if (NILP (p
->command
)
6045 && XINT (p
->infd
) >= 0)
6047 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6048 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6055 error ("No SIGTSTP support");
6057 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6062 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6063 doc
: /* Continue process PROCESS. May be process or name of one.
6064 See function `interrupt-process' for more details on usage.
6065 If PROCESS is a network process, resume handling of incoming traffic. */)
6066 (process
, current_group
)
6067 Lisp_Object process
, current_group
;
6070 if (PROCESSP (process
) && NETCONN_P (process
))
6072 struct Lisp_Process
*p
;
6074 p
= XPROCESS (process
);
6075 if (EQ (p
->command
, Qt
)
6076 && XINT (p
->infd
) >= 0
6077 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6079 FD_SET (XINT (p
->infd
), &input_wait_mask
);
6080 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
6087 process_send_signal (process
, SIGCONT
, current_group
, 0);
6089 error ("No SIGCONT support");
6094 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6095 2, 2, "sProcess (name or number): \nnSignal code: ",
6096 doc
: /* Send PROCESS the signal with code SIGCODE.
6097 PROCESS may also be an integer specifying the process id of the
6098 process to signal; in this case, the process need not be a child of
6100 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6102 Lisp_Object process
, sigcode
;
6106 if (INTEGERP (process
))
6108 pid
= XINT (process
);
6112 if (FLOATP (process
))
6114 pid
= (pid_t
) XFLOAT (process
);
6118 if (STRINGP (process
))
6121 if (tem
= Fget_process (process
), NILP (tem
))
6123 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6130 process
= get_process (process
);
6135 CHECK_PROCESS (process
);
6136 pid
= XPROCESS (process
)->pid
;
6138 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6142 #define handle_signal(NAME, VALUE) \
6143 else if (!strcmp (name, NAME)) \
6144 XSETINT (sigcode, VALUE)
6146 if (INTEGERP (sigcode
))
6150 unsigned char *name
;
6152 CHECK_SYMBOL (sigcode
);
6153 name
= SDATA (SYMBOL_NAME (sigcode
));
6155 if (!strncmp(name
, "SIG", 3))
6161 handle_signal ("HUP", SIGHUP
);
6164 handle_signal ("INT", SIGINT
);
6167 handle_signal ("QUIT", SIGQUIT
);
6170 handle_signal ("ILL", SIGILL
);
6173 handle_signal ("ABRT", SIGABRT
);
6176 handle_signal ("EMT", SIGEMT
);
6179 handle_signal ("KILL", SIGKILL
);
6182 handle_signal ("FPE", SIGFPE
);
6185 handle_signal ("BUS", SIGBUS
);
6188 handle_signal ("SEGV", SIGSEGV
);
6191 handle_signal ("SYS", SIGSYS
);
6194 handle_signal ("PIPE", SIGPIPE
);
6197 handle_signal ("ALRM", SIGALRM
);
6200 handle_signal ("TERM", SIGTERM
);
6203 handle_signal ("URG", SIGURG
);
6206 handle_signal ("STOP", SIGSTOP
);
6209 handle_signal ("TSTP", SIGTSTP
);
6212 handle_signal ("CONT", SIGCONT
);
6215 handle_signal ("CHLD", SIGCHLD
);
6218 handle_signal ("TTIN", SIGTTIN
);
6221 handle_signal ("TTOU", SIGTTOU
);
6224 handle_signal ("IO", SIGIO
);
6227 handle_signal ("XCPU", SIGXCPU
);
6230 handle_signal ("XFSZ", SIGXFSZ
);
6233 handle_signal ("VTALRM", SIGVTALRM
);
6236 handle_signal ("PROF", SIGPROF
);
6239 handle_signal ("WINCH", SIGWINCH
);
6242 handle_signal ("INFO", SIGINFO
);
6245 handle_signal ("USR1", SIGUSR1
);
6248 handle_signal ("USR2", SIGUSR2
);
6251 error ("Undefined signal name %s", name
);
6254 #undef handle_signal
6256 return make_number (kill (pid
, XINT (sigcode
)));
6259 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6260 doc
: /* Make PROCESS see end-of-file in its input.
6261 EOF comes after any text already sent to it.
6262 PROCESS may be a process, a buffer, the name of a process or buffer, or
6263 nil, indicating the current buffer's process.
6264 If PROCESS is a network connection, or is a process communicating
6265 through a pipe (as opposed to a pty), then you cannot send any more
6266 text to PROCESS after you call this function. */)
6268 Lisp_Object process
;
6271 struct coding_system
*coding
;
6273 if (DATAGRAM_CONN_P (process
))
6276 proc
= get_process (process
);
6277 coding
= proc_encode_coding_system
[XINT (XPROCESS (proc
)->outfd
)];
6279 /* Make sure the process is really alive. */
6280 if (XPROCESS (proc
)->raw_status_new
)
6281 update_status (XPROCESS (proc
));
6282 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6283 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6285 if (CODING_REQUIRE_FLUSHING (coding
))
6287 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6288 send_process (proc
, "", 0, Qnil
);
6292 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6294 if (!NILP (XPROCESS (proc
)->pty_flag
))
6295 send_process (proc
, "\004", 1, Qnil
);
6298 int old_outfd
, new_outfd
;
6300 #ifdef HAVE_SHUTDOWN
6301 /* If this is a network connection, or socketpair is used
6302 for communication with the subprocess, call shutdown to cause EOF.
6303 (In some old system, shutdown to socketpair doesn't work.
6304 Then we just can't win.) */
6305 if (XPROCESS (proc
)->pid
== 0
6306 || XINT (XPROCESS (proc
)->outfd
) == XINT (XPROCESS (proc
)->infd
))
6307 shutdown (XINT (XPROCESS (proc
)->outfd
), 1);
6308 /* In case of socketpair, outfd == infd, so don't close it. */
6309 if (XINT (XPROCESS (proc
)->outfd
) != XINT (XPROCESS (proc
)->infd
))
6310 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6311 #else /* not HAVE_SHUTDOWN */
6312 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6313 #endif /* not HAVE_SHUTDOWN */
6314 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6317 old_outfd
= XINT (XPROCESS (proc
)->outfd
);
6319 if (!proc_encode_coding_system
[new_outfd
])
6320 proc_encode_coding_system
[new_outfd
]
6321 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6322 bcopy (proc_encode_coding_system
[old_outfd
],
6323 proc_encode_coding_system
[new_outfd
],
6324 sizeof (struct coding_system
));
6325 bzero (proc_encode_coding_system
[old_outfd
],
6326 sizeof (struct coding_system
));
6328 XSETINT (XPROCESS (proc
)->outfd
, new_outfd
);
6334 /* Kill all processes associated with `buffer'.
6335 If `buffer' is nil, kill all processes */
6338 kill_buffer_processes (buffer
)
6341 Lisp_Object tail
, proc
;
6343 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6345 proc
= XCDR (XCAR (tail
));
6346 if (GC_PROCESSP (proc
)
6347 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6349 if (NETCONN_P (proc
))
6350 Fdelete_process (proc
);
6351 else if (XINT (XPROCESS (proc
)->infd
) >= 0)
6352 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6357 /* On receipt of a signal that a child status has changed, loop asking
6358 about children with changed statuses until the system says there
6361 All we do is change the status; we do not run sentinels or print
6362 notifications. That is saved for the next time keyboard input is
6363 done, in order to avoid timing errors.
6365 ** WARNING: this can be called during garbage collection.
6366 Therefore, it must not be fooled by the presence of mark bits in
6369 ** USG WARNING: Although it is not obvious from the documentation
6370 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6371 signal() before executing at least one wait(), otherwise the
6372 handler will be called again, resulting in an infinite loop. The
6373 relevant portion of the documentation reads "SIGCLD signals will be
6374 queued and the signal-catching function will be continually
6375 reentered until the queue is empty". Invoking signal() causes the
6376 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6379 ** Malloc WARNING: This should never call malloc either directly or
6380 indirectly; if it does, that is a bug */
6384 sigchld_handler (signo
)
6387 int old_errno
= errno
;
6389 register struct Lisp_Process
*p
;
6390 extern EMACS_TIME
*input_available_clear_time
;
6392 SIGNAL_THREAD_CHECK (signo
);
6396 sigheld
|= sigbit (SIGCHLD
);
6408 #endif /* no WUNTRACED */
6409 /* Keep trying to get a status until we get a definitive result. */
6413 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6415 while (pid
< 0 && errno
== EINTR
);
6419 /* PID == 0 means no processes found, PID == -1 means a real
6420 failure. We have done all our job, so return. */
6422 /* USG systems forget handlers when they are used;
6423 must reestablish each time */
6424 #if defined (USG) && !defined (POSIX_SIGNALS)
6425 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6428 sigheld
&= ~sigbit (SIGCHLD
);
6436 #endif /* no WNOHANG */
6438 /* Find the process that signaled us, and record its status. */
6440 /* The process can have been deleted by Fdelete_process. */
6441 tail
= Fmember (make_fixnum_or_float (pid
), deleted_pid_list
);
6444 Fsetcar (tail
, Qnil
);
6445 goto sigchld_end_of_loop
;
6448 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6450 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6452 proc
= XCDR (XCAR (tail
));
6453 p
= XPROCESS (proc
);
6454 if (GC_EQ (p
->childp
, Qt
) && p
->pid
== pid
)
6459 /* Look for an asynchronous process whose pid hasn't been filled
6462 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6464 proc
= XCDR (XCAR (tail
));
6465 p
= XPROCESS (proc
);
6471 /* Change the status of the process that was found. */
6474 union { int i
; WAITTYPE wt
; } u
;
6475 int clear_desc_flag
= 0;
6477 XSETINT (p
->tick
, ++process_tick
);
6479 p
->raw_status
= u
.i
;
6480 p
->raw_status_new
= 1;
6482 /* If process has terminated, stop waiting for its output. */
6483 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6484 && XINT (p
->infd
) >= 0)
6485 clear_desc_flag
= 1;
6487 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6488 if (clear_desc_flag
)
6490 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6491 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6494 /* Tell wait_reading_process_output that it needs to wake up and
6496 if (input_available_clear_time
)
6497 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6500 /* There was no asynchronous process found for that pid: we have
6501 a synchronous process. */
6504 synch_process_alive
= 0;
6506 /* Report the status of the synchronous process. */
6508 synch_process_retcode
= WRETCODE (w
);
6509 else if (WIFSIGNALED (w
))
6510 synch_process_termsig
= WTERMSIG (w
);
6512 /* Tell wait_reading_process_output that it needs to wake up and
6514 if (input_available_clear_time
)
6515 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6518 sigchld_end_of_loop
:
6521 /* On some systems, we must return right away.
6522 If any more processes want to signal us, we will
6524 Otherwise (on systems that have WNOHANG), loop around
6525 to use up all the processes that have something to tell us. */
6526 #if (defined WINDOWSNT \
6527 || (defined USG && !defined GNU_LINUX \
6528 && !(defined HPUX && defined WNOHANG)))
6529 #if defined (USG) && ! defined (POSIX_SIGNALS)
6530 signal (signo
, sigchld_handler
);
6534 #endif /* USG, but not HPUX with WNOHANG */
6537 #endif /* SIGCHLD */
6541 exec_sentinel_unwind (data
)
6544 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6549 exec_sentinel_error_handler (error
)
6552 cmd_error_internal (error
, "error in process sentinel: ");
6554 update_echo_area ();
6555 Fsleep_for (make_number (2), Qnil
);
6560 exec_sentinel (proc
, reason
)
6561 Lisp_Object proc
, reason
;
6563 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6564 register struct Lisp_Process
*p
= XPROCESS (proc
);
6565 int count
= SPECPDL_INDEX ();
6566 int outer_running_asynch_code
= running_asynch_code
;
6567 int waiting
= waiting_for_user_input_p
;
6569 if (inhibit_sentinels
)
6572 /* No need to gcpro these, because all we do with them later
6573 is test them for EQness, and none of them should be a string. */
6574 odeactivate
= Vdeactivate_mark
;
6575 XSETBUFFER (obuffer
, current_buffer
);
6576 okeymap
= current_buffer
->keymap
;
6578 sentinel
= p
->sentinel
;
6579 if (NILP (sentinel
))
6582 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6583 assure that it gets restored no matter how the sentinel exits. */
6585 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6586 /* Inhibit quit so that random quits don't screw up a running filter. */
6587 specbind (Qinhibit_quit
, Qt
);
6588 specbind (Qlast_nonmenu_event
, Qt
);
6590 /* In case we get recursively called,
6591 and we already saved the match data nonrecursively,
6592 save the same match data in safely recursive fashion. */
6593 if (outer_running_asynch_code
)
6596 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6597 restore_search_regs ();
6598 record_unwind_save_match_data ();
6599 Fset_match_data (tem
, Qt
);
6602 /* For speed, if a search happens within this code,
6603 save the match data in a special nonrecursive fashion. */
6604 running_asynch_code
= 1;
6606 internal_condition_case_1 (read_process_output_call
,
6608 Fcons (proc
, Fcons (reason
, Qnil
))),
6609 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6610 exec_sentinel_error_handler
);
6612 /* If we saved the match data nonrecursively, restore it now. */
6613 restore_search_regs ();
6614 running_asynch_code
= outer_running_asynch_code
;
6616 Vdeactivate_mark
= odeactivate
;
6618 /* Restore waiting_for_user_input_p as it was
6619 when we were called, in case the filter clobbered it. */
6620 waiting_for_user_input_p
= waiting
;
6623 if (! EQ (Fcurrent_buffer (), obuffer
)
6624 || ! EQ (current_buffer
->keymap
, okeymap
))
6626 /* But do it only if the caller is actually going to read events.
6627 Otherwise there's no need to make him wake up, and it could
6628 cause trouble (for example it would make sit_for return). */
6629 if (waiting_for_user_input_p
== -1)
6630 record_asynch_buffer_change ();
6632 unbind_to (count
, Qnil
);
6635 /* Report all recent events of a change in process status
6636 (either run the sentinel or output a message).
6637 This is usually done while Emacs is waiting for keyboard input
6638 but can be done at other times. */
6641 status_notify (deleting_process
)
6642 struct Lisp_Process
*deleting_process
;
6644 register Lisp_Object proc
, buffer
;
6645 Lisp_Object tail
, msg
;
6646 struct gcpro gcpro1
, gcpro2
;
6650 /* We need to gcpro tail; if read_process_output calls a filter
6651 which deletes a process and removes the cons to which tail points
6652 from Vprocess_alist, and then causes a GC, tail is an unprotected
6656 /* Set this now, so that if new processes are created by sentinels
6657 that we run, we get called again to handle their status changes. */
6658 update_tick
= process_tick
;
6660 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
6663 register struct Lisp_Process
*p
;
6665 proc
= Fcdr (Fcar (tail
));
6666 p
= XPROCESS (proc
);
6668 if (XINT (p
->tick
) != XINT (p
->update_tick
))
6670 XSETINT (p
->update_tick
, XINT (p
->tick
));
6672 /* If process is still active, read any output that remains. */
6673 while (! EQ (p
->filter
, Qt
)
6674 && ! EQ (p
->status
, Qconnect
)
6675 && ! EQ (p
->status
, Qlisten
)
6676 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6677 && XINT (p
->infd
) >= 0
6678 && p
!= deleting_process
6679 && read_process_output (proc
, XINT (p
->infd
)) > 0);
6683 /* Get the text to use for the message. */
6684 if (p
->raw_status_new
)
6686 msg
= status_message (p
);
6688 /* If process is terminated, deactivate it or delete it. */
6690 if (CONSP (p
->status
))
6691 symbol
= XCAR (p
->status
);
6693 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6694 || EQ (symbol
, Qclosed
))
6696 if (delete_exited_processes
)
6697 remove_process (proc
);
6699 deactivate_process (proc
);
6702 /* The actions above may have further incremented p->tick.
6703 So set p->update_tick again
6704 so that an error in the sentinel will not cause
6705 this code to be run again. */
6706 XSETINT (p
->update_tick
, XINT (p
->tick
));
6707 /* Now output the message suitably. */
6708 if (!NILP (p
->sentinel
))
6709 exec_sentinel (proc
, msg
);
6710 /* Don't bother with a message in the buffer
6711 when a process becomes runnable. */
6712 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6714 Lisp_Object ro
, tem
;
6715 struct buffer
*old
= current_buffer
;
6716 int opoint
, opoint_byte
;
6717 int before
, before_byte
;
6719 ro
= XBUFFER (buffer
)->read_only
;
6721 /* Avoid error if buffer is deleted
6722 (probably that's why the process is dead, too) */
6723 if (NILP (XBUFFER (buffer
)->name
))
6725 Fset_buffer (buffer
);
6728 opoint_byte
= PT_BYTE
;
6729 /* Insert new output into buffer
6730 at the current end-of-output marker,
6731 thus preserving logical ordering of input and output. */
6732 if (XMARKER (p
->mark
)->buffer
)
6733 Fgoto_char (p
->mark
);
6735 SET_PT_BOTH (ZV
, ZV_BYTE
);
6738 before_byte
= PT_BYTE
;
6740 tem
= current_buffer
->read_only
;
6741 current_buffer
->read_only
= Qnil
;
6742 insert_string ("\nProcess ");
6743 Finsert (1, &p
->name
);
6744 insert_string (" ");
6746 current_buffer
->read_only
= tem
;
6747 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6749 if (opoint
>= before
)
6750 SET_PT_BOTH (opoint
+ (PT
- before
),
6751 opoint_byte
+ (PT_BYTE
- before_byte
));
6753 SET_PT_BOTH (opoint
, opoint_byte
);
6755 set_buffer_internal (old
);
6760 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6761 redisplay_preserve_echo_area (13);
6767 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6768 Sset_process_coding_system
, 1, 3, 0,
6769 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6770 DECODING will be used to decode subprocess output and ENCODING to
6771 encode subprocess input. */)
6772 (process
, decoding
, encoding
)
6773 register Lisp_Object process
, decoding
, encoding
;
6775 register struct Lisp_Process
*p
;
6777 CHECK_PROCESS (process
);
6778 p
= XPROCESS (process
);
6779 if (XINT (p
->infd
) < 0)
6780 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6781 if (XINT (p
->outfd
) < 0)
6782 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6783 Fcheck_coding_system (decoding
);
6784 Fcheck_coding_system (encoding
);
6786 p
->decode_coding_system
= decoding
;
6787 p
->encode_coding_system
= encoding
;
6788 setup_process_coding_systems (process
);
6793 DEFUN ("process-coding-system",
6794 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6795 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6797 register Lisp_Object process
;
6799 CHECK_PROCESS (process
);
6800 return Fcons (XPROCESS (process
)->decode_coding_system
,
6801 XPROCESS (process
)->encode_coding_system
);
6804 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6805 Sset_process_filter_multibyte
, 2, 2, 0,
6806 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6807 If FLAG is non-nil, the filter is given multibyte strings.
6808 If FLAG is nil, the filter is given unibyte strings. In this case,
6809 all character code conversion except for end-of-line conversion is
6812 Lisp_Object process
, flag
;
6814 register struct Lisp_Process
*p
;
6816 CHECK_PROCESS (process
);
6817 p
= XPROCESS (process
);
6818 p
->filter_multibyte
= flag
;
6819 setup_process_coding_systems (process
);
6824 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6825 Sprocess_filter_multibyte_p
, 1, 1, 0,
6826 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6828 Lisp_Object process
;
6830 register struct Lisp_Process
*p
;
6832 CHECK_PROCESS (process
);
6833 p
= XPROCESS (process
);
6835 return (NILP (p
->filter_multibyte
) ? Qnil
: Qt
);
6840 /* The first time this is called, assume keyboard input comes from DESC
6841 instead of from where we used to expect it.
6842 Subsequent calls mean assume input keyboard can come from DESC
6843 in addition to other places. */
6845 static int add_keyboard_wait_descriptor_called_flag
;
6848 add_keyboard_wait_descriptor (desc
)
6851 if (! add_keyboard_wait_descriptor_called_flag
)
6852 FD_CLR (0, &input_wait_mask
);
6853 add_keyboard_wait_descriptor_called_flag
= 1;
6854 FD_SET (desc
, &input_wait_mask
);
6855 FD_SET (desc
, &non_process_wait_mask
);
6856 if (desc
> max_keyboard_desc
)
6857 max_keyboard_desc
= desc
;
6860 /* From now on, do not expect DESC to give keyboard input. */
6863 delete_keyboard_wait_descriptor (desc
)
6867 int lim
= max_keyboard_desc
;
6869 FD_CLR (desc
, &input_wait_mask
);
6870 FD_CLR (desc
, &non_process_wait_mask
);
6872 if (desc
== max_keyboard_desc
)
6873 for (fd
= 0; fd
< lim
; fd
++)
6874 if (FD_ISSET (fd
, &input_wait_mask
)
6875 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6876 max_keyboard_desc
= fd
;
6879 /* Return nonzero if *MASK has a bit set
6880 that corresponds to one of the keyboard input descriptors. */
6883 keyboard_bit_set (mask
)
6888 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6889 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6890 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6901 inhibit_sentinels
= 0;
6905 if (! noninteractive
|| initialized
)
6907 signal (SIGCHLD
, sigchld_handler
);
6910 FD_ZERO (&input_wait_mask
);
6911 FD_ZERO (&non_keyboard_wait_mask
);
6912 FD_ZERO (&non_process_wait_mask
);
6913 max_process_desc
= 0;
6915 #ifdef NON_BLOCKING_CONNECT
6916 FD_ZERO (&connect_wait_mask
);
6917 num_pending_connects
= 0;
6920 #ifdef ADAPTIVE_READ_BUFFERING
6921 process_output_delay_count
= 0;
6922 process_output_skip
= 0;
6925 FD_SET (0, &input_wait_mask
);
6927 Vprocess_alist
= Qnil
;
6929 deleted_pid_list
= Qnil
;
6931 for (i
= 0; i
< MAXDESC
; i
++)
6933 chan_process
[i
] = Qnil
;
6934 proc_buffered_char
[i
] = -1;
6936 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
6937 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
6938 #ifdef DATAGRAM_SOCKETS
6939 bzero (datagram_address
, sizeof datagram_address
);
6944 Lisp_Object subfeatures
= Qnil
;
6945 struct socket_options
*sopt
;
6947 #define ADD_SUBFEATURE(key, val) \
6948 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
6950 #ifdef NON_BLOCKING_CONNECT
6951 ADD_SUBFEATURE (QCnowait
, Qt
);
6953 #ifdef DATAGRAM_SOCKETS
6954 ADD_SUBFEATURE (QCtype
, Qdatagram
);
6956 #ifdef HAVE_LOCAL_SOCKETS
6957 ADD_SUBFEATURE (QCfamily
, Qlocal
);
6959 ADD_SUBFEATURE (QCfamily
, Qipv4
);
6961 ADD_SUBFEATURE (QCfamily
, Qipv6
);
6963 #ifdef HAVE_GETSOCKNAME
6964 ADD_SUBFEATURE (QCservice
, Qt
);
6966 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
6967 ADD_SUBFEATURE (QCserver
, Qt
);
6970 for (sopt
= socket_options
; sopt
->name
; sopt
++)
6971 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
6973 Fprovide (intern ("make-network-process"), subfeatures
);
6975 #endif /* HAVE_SOCKETS */
6977 #if defined (DARWIN) || defined (MAC_OSX)
6978 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
6979 processes. As such, we only change the default value. */
6982 char *release
= get_operating_system_release();
6983 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
6984 && release
[1] == '.')) {
6985 Vprocess_connection_type
= Qnil
;
6994 Qprocessp
= intern ("processp");
6995 staticpro (&Qprocessp
);
6996 Qrun
= intern ("run");
6998 Qstop
= intern ("stop");
7000 Qsignal
= intern ("signal");
7001 staticpro (&Qsignal
);
7003 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7006 Qexit = intern ("exit");
7007 staticpro (&Qexit); */
7009 Qopen
= intern ("open");
7011 Qclosed
= intern ("closed");
7012 staticpro (&Qclosed
);
7013 Qconnect
= intern ("connect");
7014 staticpro (&Qconnect
);
7015 Qfailed
= intern ("failed");
7016 staticpro (&Qfailed
);
7017 Qlisten
= intern ("listen");
7018 staticpro (&Qlisten
);
7019 Qlocal
= intern ("local");
7020 staticpro (&Qlocal
);
7021 Qipv4
= intern ("ipv4");
7024 Qipv6
= intern ("ipv6");
7027 Qdatagram
= intern ("datagram");
7028 staticpro (&Qdatagram
);
7030 QCname
= intern (":name");
7031 staticpro (&QCname
);
7032 QCbuffer
= intern (":buffer");
7033 staticpro (&QCbuffer
);
7034 QChost
= intern (":host");
7035 staticpro (&QChost
);
7036 QCservice
= intern (":service");
7037 staticpro (&QCservice
);
7038 QCtype
= intern (":type");
7039 staticpro (&QCtype
);
7040 QClocal
= intern (":local");
7041 staticpro (&QClocal
);
7042 QCremote
= intern (":remote");
7043 staticpro (&QCremote
);
7044 QCcoding
= intern (":coding");
7045 staticpro (&QCcoding
);
7046 QCserver
= intern (":server");
7047 staticpro (&QCserver
);
7048 QCnowait
= intern (":nowait");
7049 staticpro (&QCnowait
);
7050 QCsentinel
= intern (":sentinel");
7051 staticpro (&QCsentinel
);
7052 QClog
= intern (":log");
7054 QCnoquery
= intern (":noquery");
7055 staticpro (&QCnoquery
);
7056 QCstop
= intern (":stop");
7057 staticpro (&QCstop
);
7058 QCoptions
= intern (":options");
7059 staticpro (&QCoptions
);
7060 QCplist
= intern (":plist");
7061 staticpro (&QCplist
);
7062 QCfilter_multibyte
= intern (":filter-multibyte");
7063 staticpro (&QCfilter_multibyte
);
7065 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
7066 staticpro (&Qlast_nonmenu_event
);
7068 staticpro (&Vprocess_alist
);
7070 staticpro (&deleted_pid_list
);
7073 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7074 doc
: /* *Non-nil means delete processes immediately when they exit.
7075 A value of nil means don't delete them until `list-processes' is run. */);
7077 delete_exited_processes
= 1;
7079 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7080 doc
: /* Control type of device used to communicate with subprocesses.
7081 Values are nil to use a pipe, or t or `pty' to use a pty.
7082 The value has no effect if the system has no ptys or if all ptys are busy:
7083 then a pipe is used in any case.
7084 The value takes effect when `start-process' is called. */);
7085 Vprocess_connection_type
= Qt
;
7087 #ifdef ADAPTIVE_READ_BUFFERING
7088 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7089 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7090 On some systems, when Emacs reads the output from a subprocess, the output data
7091 is read in very small blocks, potentially resulting in very poor performance.
7092 This behavior can be remedied to some extent by setting this variable to a
7093 non-nil value, as it will automatically delay reading from such processes, to
7094 allow them to produce more output before Emacs tries to read it.
7095 If the value is t, the delay is reset after each write to the process; any other
7096 non-nil value means that the delay is not reset on write.
7097 The variable takes effect when `start-process' is called. */);
7098 Vprocess_adaptive_read_buffering
= Qt
;
7101 defsubr (&Sprocessp
);
7102 defsubr (&Sget_process
);
7103 defsubr (&Sget_buffer_process
);
7104 defsubr (&Sdelete_process
);
7105 defsubr (&Sprocess_status
);
7106 defsubr (&Sprocess_exit_status
);
7107 defsubr (&Sprocess_id
);
7108 defsubr (&Sprocess_name
);
7109 defsubr (&Sprocess_tty_name
);
7110 defsubr (&Sprocess_command
);
7111 defsubr (&Sset_process_buffer
);
7112 defsubr (&Sprocess_buffer
);
7113 defsubr (&Sprocess_mark
);
7114 defsubr (&Sset_process_filter
);
7115 defsubr (&Sprocess_filter
);
7116 defsubr (&Sset_process_sentinel
);
7117 defsubr (&Sprocess_sentinel
);
7118 defsubr (&Sset_process_window_size
);
7119 defsubr (&Sset_process_inherit_coding_system_flag
);
7120 defsubr (&Sprocess_inherit_coding_system_flag
);
7121 defsubr (&Sset_process_query_on_exit_flag
);
7122 defsubr (&Sprocess_query_on_exit_flag
);
7123 defsubr (&Sprocess_contact
);
7124 defsubr (&Sprocess_plist
);
7125 defsubr (&Sset_process_plist
);
7126 defsubr (&Slist_processes
);
7127 defsubr (&Sprocess_list
);
7128 defsubr (&Sstart_process
);
7130 defsubr (&Sset_network_process_option
);
7131 defsubr (&Smake_network_process
);
7132 defsubr (&Sformat_network_address
);
7133 #endif /* HAVE_SOCKETS */
7134 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7136 defsubr (&Snetwork_interface_list
);
7138 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7139 defsubr (&Snetwork_interface_info
);
7141 #endif /* HAVE_SOCKETS ... */
7142 #ifdef DATAGRAM_SOCKETS
7143 defsubr (&Sprocess_datagram_address
);
7144 defsubr (&Sset_process_datagram_address
);
7146 defsubr (&Saccept_process_output
);
7147 defsubr (&Sprocess_send_region
);
7148 defsubr (&Sprocess_send_string
);
7149 defsubr (&Sinterrupt_process
);
7150 defsubr (&Skill_process
);
7151 defsubr (&Squit_process
);
7152 defsubr (&Sstop_process
);
7153 defsubr (&Scontinue_process
);
7154 defsubr (&Sprocess_running_child_p
);
7155 defsubr (&Sprocess_send_eof
);
7156 defsubr (&Ssignal_process
);
7157 defsubr (&Swaiting_for_user_input_p
);
7158 /* defsubr (&Sprocess_connection); */
7159 defsubr (&Sset_process_coding_system
);
7160 defsubr (&Sprocess_coding_system
);
7161 defsubr (&Sset_process_filter_multibyte
);
7162 defsubr (&Sprocess_filter_multibyte_p
);
7166 #else /* not subprocesses */
7168 #include <sys/types.h>
7172 #include "systime.h"
7173 #include "charset.h"
7175 #include "termopts.h"
7176 #include "sysselect.h"
7178 extern int frame_garbaged
;
7180 extern EMACS_TIME
timer_check ();
7181 extern int timers_run
;
7185 /* As described above, except assuming that there are no subprocesses:
7187 Wait for timeout to elapse and/or keyboard input to be available.
7190 timeout in seconds, or
7191 zero for no limit, or
7192 -1 means gobble data immediately available but don't wait for any.
7194 read_kbd is a Lisp_Object:
7195 0 to ignore keyboard input, or
7196 1 to return when input is available, or
7197 -1 means caller will actually read the input, so don't throw to
7200 see full version for other parameters. We know that wait_proc will
7201 always be NULL, since `subprocesses' isn't defined.
7203 do_display != 0 means redisplay should be done to show subprocess
7204 output that arrives.
7206 Return true iff we received input from any process. */
7209 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7210 wait_for_cell
, wait_proc
, just_wait_proc
)
7211 int time_limit
, microsecs
, read_kbd
, do_display
;
7212 Lisp_Object wait_for_cell
;
7213 struct Lisp_Process
*wait_proc
;
7217 EMACS_TIME end_time
, timeout
;
7218 SELECT_TYPE waitchannels
;
7221 /* What does time_limit really mean? */
7222 if (time_limit
|| microsecs
)
7224 EMACS_GET_TIME (end_time
);
7225 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7226 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7229 /* Turn off periodic alarms (in case they are in use)
7230 and then turn off any other atimers,
7231 because the select emulator uses alarms. */
7233 turn_on_atimers (0);
7237 int timeout_reduced_for_timers
= 0;
7239 /* If calling from keyboard input, do not quit
7240 since we want to return C-g as an input character.
7241 Otherwise, do pending quit if requested. */
7245 /* Exit now if the cell we're waiting for became non-nil. */
7246 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7249 /* Compute time from now till when time limit is up */
7250 /* Exit if already run out */
7251 if (time_limit
== -1)
7253 /* -1 specified for timeout means
7254 gobble output available now
7255 but don't wait at all. */
7257 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7259 else if (time_limit
|| microsecs
)
7261 EMACS_GET_TIME (timeout
);
7262 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7263 if (EMACS_TIME_NEG_P (timeout
))
7268 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7271 /* If our caller will not immediately handle keyboard events,
7272 run timer events directly.
7273 (Callers that will immediately read keyboard events
7274 call timer_delay on their own.) */
7275 if (NILP (wait_for_cell
))
7277 EMACS_TIME timer_delay
;
7281 int old_timers_run
= timers_run
;
7282 timer_delay
= timer_check (1);
7283 if (timers_run
!= old_timers_run
&& do_display
)
7284 /* We must retry, since a timer may have requeued itself
7285 and that could alter the time delay. */
7286 redisplay_preserve_echo_area (14);
7290 while (!detect_input_pending ());
7292 /* If there is unread keyboard input, also return. */
7294 && requeued_events_pending_p ())
7297 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7299 EMACS_TIME difference
;
7300 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7301 if (EMACS_TIME_NEG_P (difference
))
7303 timeout
= timer_delay
;
7304 timeout_reduced_for_timers
= 1;
7309 /* Cause C-g and alarm signals to take immediate action,
7310 and cause input available signals to zero out timeout. */
7312 set_waiting_for_input (&timeout
);
7314 /* Wait till there is something to do. */
7316 if (! read_kbd
&& NILP (wait_for_cell
))
7317 FD_ZERO (&waitchannels
);
7319 FD_SET (0, &waitchannels
);
7321 /* If a frame has been newly mapped and needs updating,
7322 reprocess its display stuff. */
7323 if (frame_garbaged
&& do_display
)
7325 clear_waiting_for_input ();
7326 redisplay_preserve_echo_area (15);
7328 set_waiting_for_input (&timeout
);
7331 if (read_kbd
&& detect_input_pending ())
7334 FD_ZERO (&waitchannels
);
7337 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7342 /* Make C-g and alarm signals set flags again */
7343 clear_waiting_for_input ();
7345 /* If we woke up due to SIGWINCH, actually change size now. */
7346 do_pending_window_change (0);
7348 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7349 /* We waited the full specified time, so return now. */
7354 /* If the system call was interrupted, then go around the
7356 if (xerrno
== EINTR
)
7357 FD_ZERO (&waitchannels
);
7359 error ("select error: %s", emacs_strerror (xerrno
));
7362 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7363 /* System sometimes fails to deliver SIGIO. */
7364 kill (getpid (), SIGIO
);
7367 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7368 kill (getpid (), SIGIO
);
7371 /* Check for keyboard input */
7374 && detect_input_pending_run_timers (do_display
))
7376 swallow_events (do_display
);
7377 if (detect_input_pending_run_timers (do_display
))
7381 /* If there is unread keyboard input, also return. */
7383 && requeued_events_pending_p ())
7386 /* If wait_for_cell. check for keyboard input
7387 but don't run any timers.
7388 ??? (It seems wrong to me to check for keyboard
7389 input at all when wait_for_cell, but the code
7390 has been this way since July 1994.
7391 Try changing this after version 19.31.) */
7392 if (! NILP (wait_for_cell
)
7393 && detect_input_pending ())
7395 swallow_events (do_display
);
7396 if (detect_input_pending ())
7400 /* Exit now if the cell we're waiting for became non-nil. */
7401 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7411 /* Don't confuse make-docfile by having two doc strings for this function.
7412 make-docfile does not pay attention to #if, for good reason! */
7413 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7416 register Lisp_Object name
;
7421 /* Don't confuse make-docfile by having two doc strings for this function.
7422 make-docfile does not pay attention to #if, for good reason! */
7423 DEFUN ("process-inherit-coding-system-flag",
7424 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7428 register Lisp_Object process
;
7430 /* Ignore the argument and return the value of
7431 inherit-process-coding-system. */
7432 return inherit_process_coding_system
? Qt
: Qnil
;
7435 /* Kill all processes associated with `buffer'.
7436 If `buffer' is nil, kill all processes.
7437 Since we have no subprocesses, this does nothing. */
7440 kill_buffer_processes (buffer
)
7453 QCtype
= intern (":type");
7454 staticpro (&QCtype
);
7456 defsubr (&Sget_buffer_process
);
7457 defsubr (&Sprocess_inherit_coding_system_flag
);
7461 #endif /* not subprocesses */
7463 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7464 (do not change this comment) */