1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985, 86, 87, 88, 93, 94, 95, 96, 98, 1999,
3 2001, 2002, 2003 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
26 /* This file is split into two parts by the following preprocessor
27 conditional. The 'then' clause contains all of the support for
28 asynchronous subprocesses. The 'else' clause contains stub
29 versions of some of the asynchronous subprocess routines that are
30 often called elsewhere in Emacs, so we don't have to #ifdef the
31 sections that call them. */
39 #include <sys/types.h> /* some typedefs are used in sys/file.h */
46 #if defined(WINDOWSNT) || defined(UNIX98_PTYS)
49 #endif /* not WINDOWSNT */
51 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
52 #include <sys/socket.h>
54 #include <netinet/in.h>
55 #include <arpa/inet.h>
56 #ifdef NEED_NET_ERRNO_H
57 #include <net/errno.h>
58 #endif /* NEED_NET_ERRNO_H */
60 /* Are local (unix) sockets supported? */
61 #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM)
62 #if !defined (AF_LOCAL) && defined (AF_UNIX)
63 #define AF_LOCAL AF_UNIX
66 #define HAVE_LOCAL_SOCKETS
70 #endif /* HAVE_SOCKETS */
72 /* TERM is a poor-man's SLIP, used on GNU/Linux. */
77 /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */
78 #ifdef HAVE_BROKEN_INET_ADDR
79 #define IN_ADDR struct in_addr
80 #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1)
82 #define IN_ADDR unsigned long
83 #define NUMERIC_ADDR_ERROR (numeric_addr == -1)
86 #if defined(BSD_SYSTEM) || defined(STRIDE)
87 #include <sys/ioctl.h>
88 #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5)
90 #endif /* HAVE_PTYS and no O_NDELAY */
91 #endif /* BSD_SYSTEM || STRIDE */
93 #ifdef BROKEN_O_NONBLOCK
95 #endif /* BROKEN_O_NONBLOCK */
101 /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */
103 #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H)
104 /* sys/ioctl.h may have been included already */
106 #include <sys/ioctl.h>
113 #include <sys/sysmacros.h> /* for "minor" */
114 #endif /* not IRIS */
117 #include <sys/wait.h>
129 #include "termhooks.h"
130 #include "termopts.h"
131 #include "commands.h"
132 #include "keyboard.h"
134 #include "blockinput.h"
135 #include "dispextern.h"
136 #include "composite.h"
139 Lisp_Object Qprocessp
;
140 Lisp_Object Qrun
, Qstop
, Qsignal
;
141 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
142 Lisp_Object Qlocal
, Qdatagram
;
143 Lisp_Object QCname
, QCbuffer
, QChost
, QCservice
, QCtype
;
144 Lisp_Object QClocal
, QCremote
, QCcoding
;
145 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
146 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
147 Lisp_Object QCfilter_multibyte
;
148 Lisp_Object Qlast_nonmenu_event
;
149 /* QCfamily is declared and initialized in xfaces.c,
150 QCfilter in keyboard.c. */
151 extern Lisp_Object QCfamily
, QCfilter
;
153 /* Qexit is declared and initialized in eval.c. */
155 /* QCfamily is defined in xfaces.c. */
156 extern Lisp_Object QCfamily
;
157 /* QCfilter is defined in keyboard.c. */
158 extern Lisp_Object QCfilter
;
160 /* a process object is a network connection when its childp field is neither
161 Qt nor Qnil but is instead a property list (KEY VAL ...). */
164 #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp))
165 #define NETCONN1_P(p) (GC_CONSP ((p)->childp))
167 #define NETCONN_P(p) 0
168 #define NETCONN1_P(p) 0
169 #endif /* HAVE_SOCKETS */
171 /* Define first descriptor number available for subprocesses. */
173 #define FIRST_PROC_DESC 1
175 #define FIRST_PROC_DESC 3
178 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
181 #if !defined (SIGCHLD) && defined (SIGCLD)
182 #define SIGCHLD SIGCLD
185 #include "syssignal.h"
189 extern void set_waiting_for_input
P_ ((EMACS_TIME
*));
195 extern char *sys_errlist
[];
202 /* t means use pty, nil means use a pipe,
203 maybe other values to come. */
204 static Lisp_Object Vprocess_connection_type
;
208 #include <sys/socket.h>
212 /* These next two vars are non-static since sysdep.c uses them in the
213 emulation of `select'. */
214 /* Number of events of change of status of a process. */
216 /* Number of events for which the user or sentinel has been notified. */
219 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
221 #ifdef BROKEN_NON_BLOCKING_CONNECT
222 #undef NON_BLOCKING_CONNECT
224 #ifndef NON_BLOCKING_CONNECT
227 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
228 #if defined (O_NONBLOCK) || defined (O_NDELAY)
229 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
230 #define NON_BLOCKING_CONNECT
231 #endif /* EWOULDBLOCK || EINPROGRESS */
232 #endif /* O_NONBLOCK || O_NDELAY */
233 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
234 #endif /* HAVE_SELECT */
235 #endif /* HAVE_SOCKETS */
236 #endif /* NON_BLOCKING_CONNECT */
237 #endif /* BROKEN_NON_BLOCKING_CONNECT */
239 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
240 this system. We need to read full packets, so we need a
241 "non-destructive" select. So we require either native select,
242 or emulation of select using FIONREAD. */
244 #ifdef BROKEN_DATAGRAM_SOCKETS
245 #undef DATAGRAM_SOCKETS
247 #ifndef DATAGRAM_SOCKETS
249 #if defined (HAVE_SELECT) || defined (FIONREAD)
250 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
251 #define DATAGRAM_SOCKETS
252 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
253 #endif /* HAVE_SELECT || FIONREAD */
254 #endif /* HAVE_SOCKETS */
255 #endif /* DATAGRAM_SOCKETS */
256 #endif /* BROKEN_DATAGRAM_SOCKETS */
259 #undef NON_BLOCKING_CONNECT
260 #undef DATAGRAM_SOCKETS
264 #include "sysselect.h"
266 extern int keyboard_bit_set
P_ ((SELECT_TYPE
*));
268 /* If we support a window system, turn on the code to poll periodically
269 to detect C-g. It isn't actually used when doing interrupt input. */
270 #ifdef HAVE_WINDOW_SYSTEM
271 #define POLL_FOR_INPUT
274 /* Mask of bits indicating the descriptors that we wait for input on. */
276 static SELECT_TYPE input_wait_mask
;
278 /* Mask that excludes keyboard input descriptor (s). */
280 static SELECT_TYPE non_keyboard_wait_mask
;
282 /* Mask that excludes process input descriptor (s). */
284 static SELECT_TYPE non_process_wait_mask
;
286 /* Mask of bits indicating the descriptors that we wait for connect to
287 complete on. Once they complete, they are removed from this mask
288 and added to the input_wait_mask and non_keyboard_wait_mask. */
290 static SELECT_TYPE connect_wait_mask
;
292 /* Number of bits set in connect_wait_mask. */
293 static int num_pending_connects
;
295 /* The largest descriptor currently in use for a process object. */
296 static int max_process_desc
;
298 /* The largest descriptor currently in use for keyboard input. */
299 static int max_keyboard_desc
;
301 /* Nonzero means delete a process right away if it exits. */
302 static int delete_exited_processes
;
304 /* Indexed by descriptor, gives the process (if any) for that descriptor */
305 Lisp_Object chan_process
[MAXDESC
];
307 /* Alist of elements (NAME . PROCESS) */
308 Lisp_Object Vprocess_alist
;
310 /* Buffered-ahead input char from process, indexed by channel.
311 -1 means empty (no char is buffered).
312 Used on sys V where the only way to tell if there is any
313 output from the process is to read at least one char.
314 Always -1 on systems that support FIONREAD. */
316 /* Don't make static; need to access externally. */
317 int proc_buffered_char
[MAXDESC
];
319 /* Table of `struct coding-system' for each process. */
320 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
321 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
323 #ifdef DATAGRAM_SOCKETS
324 /* Table of `partner address' for datagram sockets. */
325 struct sockaddr_and_len
{
328 } datagram_address
[MAXDESC
];
329 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
330 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0)
332 #define DATAGRAM_CHAN_P(chan) (0)
333 #define DATAGRAM_CONN_P(proc) (0)
336 static Lisp_Object
get_process ();
337 static void exec_sentinel ();
339 extern EMACS_TIME
timer_check ();
340 extern int timers_run
;
342 /* Maximum number of bytes to send to a pty without an eof. */
343 static int pty_max_bytes
;
345 extern Lisp_Object Vfile_name_coding_system
, Vdefault_file_name_coding_system
;
351 /* The file name of the pty opened by allocate_pty. */
353 static char pty_name
[24];
356 /* Compute the Lisp form of the process status, p->status, from
357 the numeric status that was returned by `wait'. */
359 Lisp_Object
status_convert ();
363 struct Lisp_Process
*p
;
365 union { int i
; WAITTYPE wt
; } u
;
366 u
.i
= XFASTINT (p
->raw_status_low
) + (XFASTINT (p
->raw_status_high
) << 16);
367 p
->status
= status_convert (u
.wt
);
368 p
->raw_status_low
= Qnil
;
369 p
->raw_status_high
= Qnil
;
372 /* Convert a process status word in Unix format to
373 the list that we use internally. */
380 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
381 else if (WIFEXITED (w
))
382 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
383 WCOREDUMP (w
) ? Qt
: Qnil
));
384 else if (WIFSIGNALED (w
))
385 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
386 WCOREDUMP (w
) ? Qt
: Qnil
));
391 /* Given a status-list, extract the three pieces of information
392 and store them individually through the three pointers. */
395 decode_status (l
, symbol
, code
, coredump
)
413 *code
= XFASTINT (XCAR (tem
));
415 *coredump
= !NILP (tem
);
419 /* Return a string describing a process status list. */
422 status_message (status
)
427 Lisp_Object string
, string2
;
429 decode_status (status
, &symbol
, &code
, &coredump
);
431 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
434 synchronize_system_messages_locale ();
435 signame
= strsignal (code
);
438 string
= build_string (signame
);
439 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
440 SSET (string
, 0, DOWNCASE (SREF (string
, 0)));
441 return concat2 (string
, string2
);
443 else if (EQ (symbol
, Qexit
))
446 return build_string ("finished\n");
447 string
= Fnumber_to_string (make_number (code
));
448 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
449 return concat3 (build_string ("exited abnormally with code "),
452 else if (EQ (symbol
, Qfailed
))
454 string
= Fnumber_to_string (make_number (code
));
455 string2
= build_string ("\n");
456 return concat3 (build_string ("failed with code "),
460 return Fcopy_sequence (Fsymbol_name (symbol
));
465 /* Open an available pty, returning a file descriptor.
466 Return -1 on failure.
467 The file name of the terminal corresponding to the pty
468 is left in the variable pty_name. */
479 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
480 for (i
= 0; i
< 16; i
++)
483 struct stat stb
; /* Used in some PTY_OPEN. */
484 #ifdef PTY_NAME_SPRINTF
487 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
488 #endif /* no PTY_NAME_SPRINTF */
492 #else /* no PTY_OPEN */
495 /* Unusual IRIS code */
496 *ptyv
= emacs_open ("/dev/ptc", O_RDWR
| O_NDELAY
, 0);
499 if (fstat (fd
, &stb
) < 0)
501 # else /* not IRIS */
502 { /* Some systems name their pseudoterminals so that there are gaps in
503 the usual sequence - for example, on HP9000/S700 systems, there
504 are no pseudoterminals with names ending in 'f'. So we wait for
505 three failures in a row before deciding that we've reached the
507 int failed_count
= 0;
509 if (stat (pty_name
, &stb
) < 0)
512 if (failed_count
>= 3)
519 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
521 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
523 # endif /* not IRIS */
525 #endif /* no PTY_OPEN */
529 /* check to make certain that both sides are available
530 this avoids a nasty yet stupid bug in rlogins */
531 #ifdef PTY_TTY_NAME_SPRINTF
534 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
535 #endif /* no PTY_TTY_NAME_SPRINTF */
537 if (access (pty_name
, 6) != 0)
540 # if !defined(IRIS) && !defined(__sgi)
546 #endif /* not UNIPLUS */
553 #endif /* HAVE_PTYS */
559 register Lisp_Object val
, tem
, name1
;
560 register struct Lisp_Process
*p
;
564 p
= allocate_process ();
566 XSETINT (p
->infd
, -1);
567 XSETINT (p
->outfd
, -1);
568 XSETFASTINT (p
->pid
, 0);
569 XSETFASTINT (p
->tick
, 0);
570 XSETFASTINT (p
->update_tick
, 0);
571 p
->raw_status_low
= Qnil
;
572 p
->raw_status_high
= Qnil
;
574 p
->mark
= Fmake_marker ();
576 /* If name is already in use, modify it until it is unused. */
581 tem
= Fget_process (name1
);
582 if (NILP (tem
)) break;
583 sprintf (suffix
, "<%d>", i
);
584 name1
= concat2 (name
, build_string (suffix
));
588 XSETPROCESS (val
, p
);
589 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
594 remove_process (proc
)
595 register Lisp_Object proc
;
597 register Lisp_Object pair
;
599 pair
= Frassq (proc
, Vprocess_alist
);
600 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
602 deactivate_process (proc
);
605 /* Setup coding systems of PROCESS. */
608 setup_process_coding_systems (process
)
611 struct Lisp_Process
*p
= XPROCESS (process
);
612 int inch
= XINT (p
->infd
);
613 int outch
= XINT (p
->outfd
);
615 if (inch
< 0 || outch
< 0)
618 if (!proc_decode_coding_system
[inch
])
619 proc_decode_coding_system
[inch
]
620 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
621 setup_coding_system (p
->decode_coding_system
,
622 proc_decode_coding_system
[inch
]);
623 if (! NILP (p
->filter
))
625 if (NILP (p
->filter_multibyte
))
626 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
628 else if (BUFFERP (p
->buffer
))
630 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
631 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
634 if (!proc_encode_coding_system
[outch
])
635 proc_encode_coding_system
[outch
]
636 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
637 setup_coding_system (p
->encode_coding_system
,
638 proc_encode_coding_system
[outch
]);
641 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
642 doc
: /* Return t if OBJECT is a process. */)
646 return PROCESSP (object
) ? Qt
: Qnil
;
649 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
650 doc
: /* Return the process named NAME, or nil if there is none. */)
652 register Lisp_Object name
;
657 return Fcdr (Fassoc (name
, Vprocess_alist
));
660 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
661 doc
: /* Return the (or a) process associated with BUFFER.
662 BUFFER may be a buffer or the name of one. */)
664 register Lisp_Object buffer
;
666 register Lisp_Object buf
, tail
, proc
;
668 if (NILP (buffer
)) return Qnil
;
669 buf
= Fget_buffer (buffer
);
670 if (NILP (buf
)) return Qnil
;
672 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
674 proc
= Fcdr (Fcar (tail
));
675 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
681 /* This is how commands for the user decode process arguments. It
682 accepts a process, a process name, a buffer, a buffer name, or nil.
683 Buffers denote the first process in the buffer, and nil denotes the
688 register Lisp_Object name
;
690 register Lisp_Object proc
, obj
;
693 obj
= Fget_process (name
);
695 obj
= Fget_buffer (name
);
697 error ("Process %s does not exist", SDATA (name
));
699 else if (NILP (name
))
700 obj
= Fcurrent_buffer ();
704 /* Now obj should be either a buffer object or a process object.
708 proc
= Fget_buffer_process (obj
);
710 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
720 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
721 doc
: /* Delete PROCESS: kill it and forget about it immediately.
722 PROCESS may be a process, a buffer, the name of a process or buffer, or
723 nil, indicating the current buffer's process. */)
725 register Lisp_Object process
;
727 process
= get_process (process
);
728 XPROCESS (process
)->raw_status_low
= Qnil
;
729 XPROCESS (process
)->raw_status_high
= Qnil
;
730 if (NETCONN_P (process
))
732 XPROCESS (process
)->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
733 XSETINT (XPROCESS (process
)->tick
, ++process_tick
);
735 else if (XINT (XPROCESS (process
)->infd
) >= 0)
737 Fkill_process (process
, Qnil
);
738 /* Do this now, since remove_process will make sigchld_handler do nothing. */
739 XPROCESS (process
)->status
740 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
741 XSETINT (XPROCESS (process
)->tick
, ++process_tick
);
744 remove_process (process
);
748 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
749 doc
: /* Return the status of PROCESS.
750 The returned value is one of the following symbols:
751 run -- for a process that is running.
752 stop -- for a process stopped but continuable.
753 exit -- for a process that has exited.
754 signal -- for a process that has got a fatal signal.
755 open -- for a network stream connection that is open.
756 listen -- for a network stream server that is listening.
757 closed -- for a network stream connection that is closed.
758 connect -- when waiting for a non-blocking connection to complete.
759 failed -- when a non-blocking connection has failed.
760 nil -- if arg is a process name and no such process exists.
761 PROCESS may be a process, a buffer, the name of a process, or
762 nil, indicating the current buffer's process. */)
764 register Lisp_Object process
;
766 register struct Lisp_Process
*p
;
767 register Lisp_Object status
;
769 if (STRINGP (process
))
770 process
= Fget_process (process
);
772 process
= get_process (process
);
777 p
= XPROCESS (process
);
778 if (!NILP (p
->raw_status_low
))
782 status
= XCAR (status
);
785 if (EQ (status
, Qexit
))
787 else if (EQ (p
->command
, Qt
))
789 else if (EQ (status
, Qrun
))
795 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
797 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
798 If PROCESS has not yet exited or died, return 0. */)
800 register Lisp_Object process
;
802 CHECK_PROCESS (process
);
803 if (!NILP (XPROCESS (process
)->raw_status_low
))
804 update_status (XPROCESS (process
));
805 if (CONSP (XPROCESS (process
)->status
))
806 return XCAR (XCDR (XPROCESS (process
)->status
));
807 return make_number (0);
810 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
811 doc
: /* Return the process id of PROCESS.
812 This is the pid of the Unix process which PROCESS uses or talks to.
813 For a network connection, this value is nil. */)
815 register Lisp_Object process
;
817 CHECK_PROCESS (process
);
818 return XPROCESS (process
)->pid
;
821 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
822 doc
: /* Return the name of PROCESS, as a string.
823 This is the name of the program invoked in PROCESS,
824 possibly modified to make it unique among process names. */)
826 register Lisp_Object process
;
828 CHECK_PROCESS (process
);
829 return XPROCESS (process
)->name
;
832 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
833 doc
: /* Return the command that was executed to start PROCESS.
834 This is a list of strings, the first string being the program executed
835 and the rest of the strings being the arguments given to it.
836 For a non-child channel, this is nil. */)
838 register Lisp_Object process
;
840 CHECK_PROCESS (process
);
841 return XPROCESS (process
)->command
;
844 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
845 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
846 This is the terminal that the process itself reads and writes on,
847 not the name of the pty that Emacs uses to talk with that terminal. */)
849 register Lisp_Object process
;
851 CHECK_PROCESS (process
);
852 return XPROCESS (process
)->tty_name
;
855 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
857 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
859 register Lisp_Object process
, buffer
;
861 struct Lisp_Process
*p
;
863 CHECK_PROCESS (process
);
865 CHECK_BUFFER (buffer
);
866 p
= XPROCESS (process
);
869 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
870 setup_process_coding_systems (process
);
874 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
876 doc
: /* Return the buffer PROCESS is associated with.
877 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
879 register Lisp_Object process
;
881 CHECK_PROCESS (process
);
882 return XPROCESS (process
)->buffer
;
885 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
887 doc
: /* Return the marker for the end of the last output from PROCESS. */)
889 register Lisp_Object process
;
891 CHECK_PROCESS (process
);
892 return XPROCESS (process
)->mark
;
895 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
897 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
898 t means stop accepting output from the process.
900 When a process has a filter, its buffer is not used for output.
901 Instead, each time it does output, the entire string of output is
902 passed to the filter.
904 The filter gets two arguments: the process and the string of output.
905 The string argument is normally a multibyte string, except:
906 - if the process' input coding system is no-conversion or raw-text,
907 it is a unibyte string (the non-converted input), or else
908 - if `default-enable-multibyte-characters' is nil, it is a unibyte
909 string (the result of converting the decoded input multibyte
910 string to unibyte with `string-make-unibyte'). */)
912 register Lisp_Object process
, filter
;
914 struct Lisp_Process
*p
;
916 CHECK_PROCESS (process
);
917 p
= XPROCESS (process
);
919 /* Don't signal an error if the process' input file descriptor
920 is closed. This could make debugging Lisp more difficult,
921 for example when doing something like
923 (setq process (start-process ...))
925 (set-process-filter process ...) */
927 if (XINT (p
->infd
) >= 0)
929 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
931 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
932 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
934 else if (EQ (p
->filter
, Qt
)
935 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
937 FD_SET (XINT (p
->infd
), &input_wait_mask
);
938 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
944 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
945 setup_process_coding_systems (process
);
949 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
951 doc
: /* Returns the filter function of PROCESS; nil if none.
952 See `set-process-filter' for more info on filter functions. */)
954 register Lisp_Object process
;
956 CHECK_PROCESS (process
);
957 return XPROCESS (process
)->filter
;
960 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
962 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
963 The sentinel is called as a function when the process changes state.
964 It gets two arguments: the process, and a string describing the change. */)
966 register Lisp_Object process
, sentinel
;
968 CHECK_PROCESS (process
);
969 XPROCESS (process
)->sentinel
= sentinel
;
973 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
975 doc
: /* Return the sentinel of PROCESS; nil if none.
976 See `set-process-sentinel' for more info on sentinels. */)
978 register Lisp_Object process
;
980 CHECK_PROCESS (process
);
981 return XPROCESS (process
)->sentinel
;
984 DEFUN ("set-process-window-size", Fset_process_window_size
,
985 Sset_process_window_size
, 3, 3, 0,
986 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
987 (process
, height
, width
)
988 register Lisp_Object process
, height
, width
;
990 CHECK_PROCESS (process
);
991 CHECK_NATNUM (height
);
992 CHECK_NATNUM (width
);
994 if (XINT (XPROCESS (process
)->infd
) < 0
995 || set_window_size (XINT (XPROCESS (process
)->infd
),
996 XINT (height
), XINT (width
)) <= 0)
1002 DEFUN ("set-process-inherit-coding-system-flag",
1003 Fset_process_inherit_coding_system_flag
,
1004 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1005 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1006 If the second argument FLAG is non-nil, then the variable
1007 `buffer-file-coding-system' of the buffer associated with PROCESS
1008 will be bound to the value of the coding system used to decode
1011 This is useful when the coding system specified for the process buffer
1012 leaves either the character code conversion or the end-of-line conversion
1013 unspecified, or if the coding system used to decode the process output
1014 is more appropriate for saving the process buffer.
1016 Binding the variable `inherit-process-coding-system' to non-nil before
1017 starting the process is an alternative way of setting the inherit flag
1018 for the process which will run. */)
1020 register Lisp_Object process
, flag
;
1022 CHECK_PROCESS (process
);
1023 XPROCESS (process
)->inherit_coding_system_flag
= flag
;
1027 DEFUN ("process-inherit-coding-system-flag",
1028 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1030 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1031 If this flag is t, `buffer-file-coding-system' of the buffer
1032 associated with PROCESS will inherit the coding system used to decode
1033 the process output. */)
1035 register Lisp_Object process
;
1037 CHECK_PROCESS (process
);
1038 return XPROCESS (process
)->inherit_coding_system_flag
;
1041 DEFUN ("set-process-query-on-exit-flag",
1042 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1044 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1045 If the second argument FLAG is non-nil, emacs will query the user before
1046 exiting if PROCESS is running. */)
1048 register Lisp_Object process
, flag
;
1050 CHECK_PROCESS (process
);
1051 XPROCESS (process
)->kill_without_query
= Fnull (flag
);
1055 DEFUN ("process-query-on-exit-flag",
1056 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1058 doc
: /* Return the current value of query on exit flag for PROCESS. */)
1060 register Lisp_Object process
;
1062 CHECK_PROCESS (process
);
1063 return Fnull (XPROCESS (process
)->kill_without_query
);
1066 #ifdef DATAGRAM_SOCKETS
1067 Lisp_Object
Fprocess_datagram_address ();
1070 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1072 doc
: /* Return the contact info of PROCESS; t for a real child.
1073 For a net connection, the value depends on the optional KEY arg.
1074 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1075 if KEY is t, the complete contact information for the connection is
1076 returned, else the specific value for the keyword KEY is returned.
1077 See `make-network-process' for a list of keywords. */)
1079 register Lisp_Object process
, key
;
1081 Lisp_Object contact
;
1083 CHECK_PROCESS (process
);
1084 contact
= XPROCESS (process
)->childp
;
1086 #ifdef DATAGRAM_SOCKETS
1087 if (DATAGRAM_CONN_P (process
)
1088 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1089 contact
= Fplist_put (contact
, QCremote
,
1090 Fprocess_datagram_address (process
));
1093 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1096 return Fcons (Fplist_get (contact
, QChost
),
1097 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1098 return Fplist_get (contact
, key
);
1101 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1103 doc
: /* Return the plist of PROCESS. */)
1105 register Lisp_Object process
;
1107 CHECK_PROCESS (process
);
1108 return XPROCESS (process
)->plist
;
1111 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1113 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1115 register Lisp_Object process
, plist
;
1117 CHECK_PROCESS (process
);
1120 XPROCESS (process
)->plist
= plist
;
1124 #if 0 /* Turned off because we don't currently record this info
1125 in the process. Perhaps add it. */
1126 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1127 doc
: /* Return the connection type of PROCESS.
1128 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1129 a socket connection. */)
1131 Lisp_Object process
;
1133 return XPROCESS (process
)->type
;
1138 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1140 doc
: /* Convert network ADDRESS from internal format to a string.
1141 If optional second argument OMIT-PORT is non-nil, don't include a port
1142 number in the string; in this case, interpret a 4 element vector as an
1143 IP address. Returns nil if format of ADDRESS is invalid. */)
1144 (address
, omit_port
)
1145 Lisp_Object address
, omit_port
;
1150 if (STRINGP (address
)) /* AF_LOCAL */
1153 if (VECTORP (address
)) /* AF_INET */
1155 register struct Lisp_Vector
*p
= XVECTOR (address
);
1156 Lisp_Object args
[6];
1159 if (!NILP (omit_port
) && (p
->size
== 4 || p
->size
== 5))
1161 args
[0] = build_string ("%d.%d.%d.%d");
1164 else if (p
->size
== 5)
1166 args
[0] = build_string ("%d.%d.%d.%d:%d");
1172 for (i
= 0; i
< nargs
; i
++)
1173 args
[i
+1] = p
->contents
[i
];
1174 return Fformat (nargs
+1, args
);
1177 if (CONSP (address
))
1179 Lisp_Object args
[2];
1180 args
[0] = build_string ("<Family %d>");
1181 args
[1] = Fcar (address
);
1182 return Fformat (2, args
);
1191 list_processes_1 (query_only
)
1192 Lisp_Object query_only
;
1194 register Lisp_Object tail
, tem
;
1195 Lisp_Object proc
, minspace
, tem1
;
1196 register struct Lisp_Process
*p
;
1198 int w_proc
, w_buffer
, w_tty
;
1199 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1201 w_proc
= 4; /* Proc */
1202 w_buffer
= 6; /* Buffer */
1203 w_tty
= 0; /* Omit if no ttys */
1205 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1209 proc
= Fcdr (Fcar (tail
));
1210 p
= XPROCESS (proc
);
1211 if (NILP (p
->childp
))
1213 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1215 if (STRINGP (p
->name
)
1216 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1218 if (!NILP (p
->buffer
))
1220 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1221 w_buffer
= 8; /* (Killed) */
1222 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1225 if (STRINGP (p
->tty_name
)
1226 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1230 XSETFASTINT (i_status
, w_proc
+ 1);
1231 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1234 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1235 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1238 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1241 XSETFASTINT (minspace
, 1);
1243 set_buffer_internal (XBUFFER (Vstandard_output
));
1244 Fbuffer_disable_undo (Vstandard_output
);
1246 current_buffer
->truncate_lines
= Qt
;
1248 write_string ("Proc", -1);
1249 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1250 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1253 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1255 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1256 write_string ("\n", -1);
1258 write_string ("----", -1);
1259 Findent_to (i_status
, minspace
); write_string ("------", -1);
1260 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1263 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1265 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1266 write_string ("\n", -1);
1268 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1272 proc
= Fcdr (Fcar (tail
));
1273 p
= XPROCESS (proc
);
1274 if (NILP (p
->childp
))
1276 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1279 Finsert (1, &p
->name
);
1280 Findent_to (i_status
, minspace
);
1282 if (!NILP (p
->raw_status_low
))
1285 if (CONSP (p
->status
))
1286 symbol
= XCAR (p
->status
);
1289 if (EQ (symbol
, Qsignal
))
1292 tem
= Fcar (Fcdr (p
->status
));
1294 if (XINT (tem
) < NSIG
)
1295 write_string (sys_errlist
[XINT (tem
)], -1);
1298 Fprinc (symbol
, Qnil
);
1300 else if (NETCONN1_P (p
))
1302 if (EQ (symbol
, Qexit
))
1303 write_string ("closed", -1);
1304 else if (EQ (p
->command
, Qt
))
1305 write_string ("stopped", -1);
1306 else if (EQ (symbol
, Qrun
))
1307 write_string ("open", -1);
1309 Fprinc (symbol
, Qnil
);
1312 Fprinc (symbol
, Qnil
);
1314 if (EQ (symbol
, Qexit
))
1317 tem
= Fcar (Fcdr (p
->status
));
1320 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1321 write_string (tembuf
, -1);
1325 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
1326 remove_process (proc
);
1328 Findent_to (i_buffer
, minspace
);
1329 if (NILP (p
->buffer
))
1330 insert_string ("(none)");
1331 else if (NILP (XBUFFER (p
->buffer
)->name
))
1332 insert_string ("(Killed)");
1334 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1338 Findent_to (i_tty
, minspace
);
1339 if (STRINGP (p
->tty_name
))
1340 Finsert (1, &p
->tty_name
);
1343 Findent_to (i_command
, minspace
);
1345 if (EQ (p
->status
, Qlisten
))
1347 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1348 if (INTEGERP (port
))
1349 port
= Fnumber_to_string (port
);
1351 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1352 sprintf (tembuf
, "(network %s server on %s)\n",
1353 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1354 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1355 insert_string (tembuf
);
1357 else if (NETCONN1_P (p
))
1359 /* For a local socket, there is no host name,
1360 so display service instead. */
1361 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1362 if (!STRINGP (host
))
1364 host
= Fplist_get (p
->childp
, QCservice
);
1365 if (INTEGERP (host
))
1366 host
= Fnumber_to_string (host
);
1369 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1370 sprintf (tembuf
, "(network %s connection to %s)\n",
1371 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1372 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1373 insert_string (tembuf
);
1385 insert_string (" ");
1387 insert_string ("\n");
1393 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1394 doc
: /* Display a list of all processes.
1395 If optional argument QUERY-ONLY is non-nil, only processes with
1396 the query-on-exit flag set will be listed.
1397 Any process listed as exited or signaled is actually eliminated
1398 after the listing is made. */)
1400 Lisp_Object query_only
;
1402 internal_with_output_to_temp_buffer ("*Process List*",
1403 list_processes_1
, query_only
);
1407 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1408 doc
: /* Return a list of all processes. */)
1411 return Fmapcar (Qcdr
, Vprocess_alist
);
1414 /* Starting asynchronous inferior processes. */
1416 static Lisp_Object
start_process_unwind ();
1418 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1419 doc
: /* Start a program in a subprocess. Return the process object for it.
1420 NAME is name for process. It is modified if necessary to make it unique.
1421 BUFFER is the buffer or (buffer-name) to associate with the process.
1422 Process output goes at end of that buffer, unless you specify
1423 an output stream or filter function to handle the output.
1424 BUFFER may be also nil, meaning that this process is not associated
1426 Third arg is program file name. It is searched for in PATH.
1427 Remaining arguments are strings to give program as arguments.
1429 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1432 register Lisp_Object
*args
;
1434 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1436 register unsigned char *new_argv
;
1439 register unsigned char **new_argv
;
1442 int count
= SPECPDL_INDEX ();
1446 buffer
= Fget_buffer_create (buffer
);
1448 /* Make sure that the child will be able to chdir to the current
1449 buffer's current directory, or its unhandled equivalent. We
1450 can't just have the child check for an error when it does the
1451 chdir, since it's in a vfork.
1453 We have to GCPRO around this because Fexpand_file_name and
1454 Funhandled_file_name_directory might call a file name handling
1455 function. The argument list is protected by the caller, so all
1456 we really have to worry about is buffer. */
1458 struct gcpro gcpro1
, gcpro2
;
1460 current_dir
= current_buffer
->directory
;
1462 GCPRO2 (buffer
, current_dir
);
1465 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1467 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1468 report_file_error ("Setting current directory",
1469 Fcons (current_buffer
->directory
, Qnil
));
1475 CHECK_STRING (name
);
1479 CHECK_STRING (program
);
1481 proc
= make_process (name
);
1482 /* If an error occurs and we can't start the process, we want to
1483 remove it from the process list. This means that each error
1484 check in create_process doesn't need to call remove_process
1485 itself; it's all taken care of here. */
1486 record_unwind_protect (start_process_unwind
, proc
);
1488 XPROCESS (proc
)->childp
= Qt
;
1489 XPROCESS (proc
)->plist
= Qnil
;
1490 XPROCESS (proc
)->command_channel_p
= Qnil
;
1491 XPROCESS (proc
)->buffer
= buffer
;
1492 XPROCESS (proc
)->sentinel
= Qnil
;
1493 XPROCESS (proc
)->filter
= Qnil
;
1494 XPROCESS (proc
)->filter_multibyte
1495 = buffer_defaults
.enable_multibyte_characters
;
1496 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1498 /* Make the process marker point into the process buffer (if any). */
1500 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1501 BUF_ZV (XBUFFER (buffer
)),
1502 BUF_ZV_BYTE (XBUFFER (buffer
)));
1505 /* Decide coding systems for communicating with the process. Here
1506 we don't setup the structure coding_system nor pay attention to
1507 unibyte mode. They are done in create_process. */
1509 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1510 Lisp_Object coding_systems
= Qt
;
1511 Lisp_Object val
, *args2
;
1512 struct gcpro gcpro1
, gcpro2
;
1514 val
= Vcoding_system_for_read
;
1517 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1518 args2
[0] = Qstart_process
;
1519 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1520 GCPRO2 (proc
, current_dir
);
1521 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1523 if (CONSP (coding_systems
))
1524 val
= XCAR (coding_systems
);
1525 else if (CONSP (Vdefault_process_coding_system
))
1526 val
= XCAR (Vdefault_process_coding_system
);
1528 XPROCESS (proc
)->decode_coding_system
= val
;
1530 val
= Vcoding_system_for_write
;
1533 if (EQ (coding_systems
, Qt
))
1535 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1536 args2
[0] = Qstart_process
;
1537 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1538 GCPRO2 (proc
, current_dir
);
1539 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1542 if (CONSP (coding_systems
))
1543 val
= XCDR (coding_systems
);
1544 else if (CONSP (Vdefault_process_coding_system
))
1545 val
= XCDR (Vdefault_process_coding_system
);
1547 XPROCESS (proc
)->encode_coding_system
= val
;
1551 /* Make a one member argv with all args concatenated
1552 together separated by a blank. */
1553 len
= SBYTES (program
) + 2;
1554 for (i
= 3; i
< nargs
; i
++)
1558 len
+= SBYTES (tem
) + 1; /* count the blank */
1560 new_argv
= (unsigned char *) alloca (len
);
1561 strcpy (new_argv
, SDATA (program
));
1562 for (i
= 3; i
< nargs
; i
++)
1566 strcat (new_argv
, " ");
1567 strcat (new_argv
, SDATA (tem
));
1569 /* Need to add code here to check for program existence on VMS */
1572 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1574 /* If program file name is not absolute, search our path for it.
1575 Put the name we will really use in TEM. */
1576 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1577 && !(SCHARS (program
) > 1
1578 && IS_DEVICE_SEP (SREF (program
, 1))))
1580 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1583 GCPRO4 (name
, program
, buffer
, current_dir
);
1584 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1587 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1588 tem
= Fexpand_file_name (tem
, Qnil
);
1592 if (!NILP (Ffile_directory_p (program
)))
1593 error ("Specified program for new process is a directory");
1597 /* If program file name starts with /: for quoting a magic name,
1599 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1600 && SREF (tem
, 1) == ':')
1601 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1603 /* Encode the file name and put it in NEW_ARGV.
1604 That's where the child will use it to execute the program. */
1605 tem
= ENCODE_FILE (tem
);
1606 new_argv
[0] = SDATA (tem
);
1608 /* Here we encode arguments by the coding system used for sending
1609 data to the process. We don't support using different coding
1610 systems for encoding arguments and for encoding data sent to the
1613 for (i
= 3; i
< nargs
; i
++)
1617 if (STRING_MULTIBYTE (tem
))
1618 tem
= (code_convert_string_norecord
1619 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1620 new_argv
[i
- 2] = SDATA (tem
);
1622 new_argv
[i
- 2] = 0;
1623 #endif /* not VMS */
1625 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1626 XPROCESS (proc
)->decoding_carryover
= make_number (0);
1627 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1628 XPROCESS (proc
)->encoding_carryover
= make_number (0);
1630 XPROCESS (proc
)->inherit_coding_system_flag
1631 = (NILP (buffer
) || !inherit_process_coding_system
1634 create_process (proc
, (char **) new_argv
, current_dir
);
1636 return unbind_to (count
, proc
);
1639 /* This function is the unwind_protect form for Fstart_process. If
1640 PROC doesn't have its pid set, then we know someone has signaled
1641 an error and the process wasn't started successfully, so we should
1642 remove it from the process list. */
1644 start_process_unwind (proc
)
1647 if (!PROCESSP (proc
))
1650 /* Was PROC started successfully? */
1651 if (XINT (XPROCESS (proc
)->pid
) <= 0)
1652 remove_process (proc
);
1658 create_process_1 (timer
)
1659 struct atimer
*timer
;
1661 /* Nothing to do. */
1665 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1668 /* Mimic blocking of signals on system V, which doesn't really have it. */
1670 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1671 int sigchld_deferred
;
1674 create_process_sigchld ()
1676 signal (SIGCHLD
, create_process_sigchld
);
1678 sigchld_deferred
= 1;
1684 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1686 create_process (process
, new_argv
, current_dir
)
1687 Lisp_Object process
;
1689 Lisp_Object current_dir
;
1691 int pid
, inchannel
, outchannel
;
1693 #ifdef POSIX_SIGNALS
1696 struct sigaction sigint_action
;
1697 struct sigaction sigquit_action
;
1699 struct sigaction sighup_action
;
1701 #else /* !POSIX_SIGNALS */
1704 SIGTYPE (*sigchld
)();
1707 #endif /* !POSIX_SIGNALS */
1708 /* Use volatile to protect variables from being clobbered by longjmp. */
1709 volatile int forkin
, forkout
;
1710 volatile int pty_flag
= 0;
1712 extern char **environ
;
1715 inchannel
= outchannel
= -1;
1718 if (!NILP (Vprocess_connection_type
))
1719 outchannel
= inchannel
= allocate_pty ();
1723 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1724 /* On most USG systems it does not work to open the pty's tty here,
1725 then close it and reopen it in the child. */
1727 /* Don't let this terminal become our controlling terminal
1728 (in case we don't have one). */
1729 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1731 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1734 report_file_error ("Opening pty", Qnil
);
1736 forkin
= forkout
= -1;
1737 #endif /* not USG, or USG_SUBTTY_WORKS */
1741 #endif /* HAVE_PTYS */
1744 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1745 report_file_error ("Opening socketpair", Qnil
);
1746 outchannel
= inchannel
= sv
[0];
1747 forkout
= forkin
= sv
[1];
1749 #else /* not SKTPAIR */
1754 report_file_error ("Creating pipe", Qnil
);
1760 emacs_close (inchannel
);
1761 emacs_close (forkout
);
1762 report_file_error ("Creating pipe", Qnil
);
1767 #endif /* not SKTPAIR */
1770 /* Replaced by close_process_descs */
1771 set_exclusive_use (inchannel
);
1772 set_exclusive_use (outchannel
);
1775 /* Stride people say it's a mystery why this is needed
1776 as well as the O_NDELAY, but that it fails without this. */
1777 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1780 ioctl (inchannel
, FIONBIO
, &one
);
1785 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1786 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1789 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1790 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1794 /* Record this as an active process, with its channels.
1795 As a result, child_setup will close Emacs's side of the pipes. */
1796 chan_process
[inchannel
] = process
;
1797 XSETINT (XPROCESS (process
)->infd
, inchannel
);
1798 XSETINT (XPROCESS (process
)->outfd
, outchannel
);
1800 /* Previously we recorded the tty descriptor used in the subprocess.
1801 It was only used for getting the foreground tty process, so now
1802 we just reopen the device (see emacs_get_tty_pgrp) as this is
1803 more portable (see USG_SUBTTY_WORKS above). */
1805 XPROCESS (process
)->pty_flag
= (pty_flag
? Qt
: Qnil
);
1806 XPROCESS (process
)->status
= Qrun
;
1807 setup_process_coding_systems (process
);
1809 /* Delay interrupts until we have a chance to store
1810 the new fork's pid in its process structure */
1811 #ifdef POSIX_SIGNALS
1812 sigemptyset (&blocked
);
1814 sigaddset (&blocked
, SIGCHLD
);
1816 #ifdef HAVE_WORKING_VFORK
1817 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1818 this sets the parent's signal handlers as well as the child's.
1819 So delay all interrupts whose handlers the child might munge,
1820 and record the current handlers so they can be restored later. */
1821 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1822 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1824 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1826 #endif /* HAVE_WORKING_VFORK */
1827 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1828 #else /* !POSIX_SIGNALS */
1832 #else /* not BSD4_1 */
1833 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1834 sigsetmask (sigmask (SIGCHLD
));
1835 #else /* ordinary USG */
1837 sigchld_deferred
= 0;
1838 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1840 #endif /* ordinary USG */
1841 #endif /* not BSD4_1 */
1842 #endif /* SIGCHLD */
1843 #endif /* !POSIX_SIGNALS */
1845 FD_SET (inchannel
, &input_wait_mask
);
1846 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1847 if (inchannel
> max_process_desc
)
1848 max_process_desc
= inchannel
;
1850 /* Until we store the proper pid, enable sigchld_handler
1851 to recognize an unknown pid as standing for this process.
1852 It is very important not to let this `marker' value stay
1853 in the table after this function has returned; if it does
1854 it might cause call-process to hang and subsequent asynchronous
1855 processes to get their return values scrambled. */
1856 XSETINT (XPROCESS (process
)->pid
, -1);
1861 /* child_setup must clobber environ on systems with true vfork.
1862 Protect it from permanent change. */
1863 char **save_environ
= environ
;
1865 current_dir
= ENCODE_FILE (current_dir
);
1870 #endif /* not WINDOWSNT */
1872 int xforkin
= forkin
;
1873 int xforkout
= forkout
;
1875 #if 0 /* This was probably a mistake--it duplicates code later on,
1876 but fails to handle all the cases. */
1877 /* Make sure SIGCHLD is not blocked in the child. */
1878 sigsetmask (SIGEMPTYMASK
);
1881 /* Make the pty be the controlling terminal of the process. */
1883 /* First, disconnect its current controlling terminal. */
1885 /* We tried doing setsid only if pty_flag, but it caused
1886 process_set_signal to fail on SGI when using a pipe. */
1888 /* Make the pty's terminal the controlling terminal. */
1892 /* We ignore the return value
1893 because faith@cs.unc.edu says that is necessary on Linux. */
1894 ioctl (xforkin
, TIOCSCTTY
, 0);
1897 #else /* not HAVE_SETSID */
1899 /* It's very important to call setpgrp here and no time
1900 afterwards. Otherwise, we lose our controlling tty which
1901 is set when we open the pty. */
1904 #endif /* not HAVE_SETSID */
1905 #if defined (HAVE_TERMIOS) && defined (LDISC1)
1906 if (pty_flag
&& xforkin
>= 0)
1909 tcgetattr (xforkin
, &t
);
1911 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
1912 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
1915 #if defined (NTTYDISC) && defined (TIOCSETD)
1916 if (pty_flag
&& xforkin
>= 0)
1918 /* Use new line discipline. */
1919 int ldisc
= NTTYDISC
;
1920 ioctl (xforkin
, TIOCSETD
, &ldisc
);
1925 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
1926 can do TIOCSPGRP only to the process's controlling tty. */
1929 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
1930 I can't test it since I don't have 4.3. */
1931 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
1932 ioctl (j
, TIOCNOTTY
, 0);
1935 /* In order to get a controlling terminal on some versions
1936 of BSD, it is necessary to put the process in pgrp 0
1937 before it opens the terminal. */
1945 #endif /* TIOCNOTTY */
1947 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
1948 /*** There is a suggestion that this ought to be a
1949 conditional on TIOCSPGRP,
1950 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
1951 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
1952 that system does seem to need this code, even though
1953 both HAVE_SETSID and TIOCSCTTY are defined. */
1954 /* Now close the pty (if we had it open) and reopen it.
1955 This makes the pty the controlling terminal of the subprocess. */
1958 #ifdef SET_CHILD_PTY_PGRP
1959 int pgrp
= getpid ();
1962 /* I wonder if emacs_close (emacs_open (pty_name, ...))
1965 emacs_close (xforkin
);
1966 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
1970 emacs_write (1, "Couldn't open the pty terminal ", 31);
1971 emacs_write (1, pty_name
, strlen (pty_name
));
1972 emacs_write (1, "\n", 1);
1976 #ifdef SET_CHILD_PTY_PGRP
1977 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
1978 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
1981 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
1983 #ifdef SETUP_SLAVE_PTY
1988 #endif /* SETUP_SLAVE_PTY */
1990 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
1991 Now reenable it in the child, so it will die when we want it to. */
1993 signal (SIGHUP
, SIG_DFL
);
1995 #endif /* HAVE_PTYS */
1997 signal (SIGINT
, SIG_DFL
);
1998 signal (SIGQUIT
, SIG_DFL
);
2000 /* Stop blocking signals in the child. */
2001 #ifdef POSIX_SIGNALS
2002 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2003 #else /* !POSIX_SIGNALS */
2007 #else /* not BSD4_1 */
2008 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2009 sigsetmask (SIGEMPTYMASK
);
2010 #else /* ordinary USG */
2012 signal (SIGCHLD
, sigchld
);
2014 #endif /* ordinary USG */
2015 #endif /* not BSD4_1 */
2016 #endif /* SIGCHLD */
2017 #endif /* !POSIX_SIGNALS */
2020 child_setup_tty (xforkout
);
2022 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2023 new_argv
, 1, current_dir
);
2024 #else /* not WINDOWSNT */
2025 child_setup (xforkin
, xforkout
, xforkout
,
2026 new_argv
, 1, current_dir
);
2027 #endif /* not WINDOWSNT */
2029 environ
= save_environ
;
2034 /* This runs in the Emacs process. */
2038 emacs_close (forkin
);
2039 if (forkin
!= forkout
&& forkout
>= 0)
2040 emacs_close (forkout
);
2044 /* vfork succeeded. */
2045 XSETFASTINT (XPROCESS (process
)->pid
, pid
);
2048 register_child (pid
, inchannel
);
2049 #endif /* WINDOWSNT */
2051 /* If the subfork execv fails, and it exits,
2052 this close hangs. I don't know why.
2053 So have an interrupt jar it loose. */
2055 struct atimer
*timer
;
2059 EMACS_SET_SECS_USECS (offset
, 1, 0);
2060 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2063 emacs_close (forkin
);
2065 cancel_atimer (timer
);
2069 if (forkin
!= forkout
&& forkout
>= 0)
2070 emacs_close (forkout
);
2074 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2077 XPROCESS (process
)->tty_name
= Qnil
;
2080 /* Restore the signal state whether vfork succeeded or not.
2081 (We will signal an error, below, if it failed.) */
2082 #ifdef POSIX_SIGNALS
2083 #ifdef HAVE_WORKING_VFORK
2084 /* Restore the parent's signal handlers. */
2085 sigaction (SIGINT
, &sigint_action
, 0);
2086 sigaction (SIGQUIT
, &sigquit_action
, 0);
2088 sigaction (SIGHUP
, &sighup_action
, 0);
2090 #endif /* HAVE_WORKING_VFORK */
2091 /* Stop blocking signals in the parent. */
2092 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2093 #else /* !POSIX_SIGNALS */
2097 #else /* not BSD4_1 */
2098 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2099 sigsetmask (SIGEMPTYMASK
);
2100 #else /* ordinary USG */
2102 signal (SIGCHLD
, sigchld
);
2103 /* Now really handle any of these signals
2104 that came in during this function. */
2105 if (sigchld_deferred
)
2106 kill (getpid (), SIGCHLD
);
2108 #endif /* ordinary USG */
2109 #endif /* not BSD4_1 */
2110 #endif /* SIGCHLD */
2111 #endif /* !POSIX_SIGNALS */
2113 /* Now generate the error if vfork failed. */
2115 report_file_error ("Doing vfork", Qnil
);
2117 #endif /* not VMS */
2122 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2123 The address family of sa is not included in the result. */
2126 conv_sockaddr_to_lisp (sa
, len
)
2127 struct sockaddr
*sa
;
2130 Lisp_Object address
;
2133 register struct Lisp_Vector
*p
;
2135 switch (sa
->sa_family
)
2139 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2140 len
= sizeof (sin
->sin_addr
) + 1;
2141 address
= Fmake_vector (make_number (len
), Qnil
);
2142 p
= XVECTOR (address
);
2143 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2144 cp
= (unsigned char *)&sin
->sin_addr
;
2147 #ifdef HAVE_LOCAL_SOCKETS
2150 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2151 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2152 if (sockun
->sun_path
[i
] == 0)
2154 return make_unibyte_string (sockun
->sun_path
, i
);
2158 len
-= sizeof (sa
->sa_family
);
2159 address
= Fcons (make_number (sa
->sa_family
),
2160 Fmake_vector (make_number (len
), Qnil
));
2161 p
= XVECTOR (XCDR (address
));
2162 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2168 p
->contents
[i
++] = make_number (*cp
++);
2174 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2177 get_lisp_to_sockaddr_size (address
, familyp
)
2178 Lisp_Object address
;
2181 register struct Lisp_Vector
*p
;
2183 if (VECTORP (address
))
2185 p
= XVECTOR (address
);
2189 return sizeof (struct sockaddr_in
);
2192 #ifdef HAVE_LOCAL_SOCKETS
2193 else if (STRINGP (address
))
2195 *familyp
= AF_LOCAL
;
2196 return sizeof (struct sockaddr_un
);
2199 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2201 struct sockaddr
*sa
;
2202 *familyp
= XINT (XCAR (address
));
2203 p
= XVECTOR (XCDR (address
));
2204 return p
->size
+ sizeof (sa
->sa_family
);
2209 /* Convert an address object (vector or string) to an internal sockaddr.
2210 Format of address has already been validated by size_lisp_to_sockaddr. */
2213 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2215 Lisp_Object address
;
2216 struct sockaddr
*sa
;
2219 register struct Lisp_Vector
*p
;
2220 register unsigned char *cp
= NULL
;
2224 sa
->sa_family
= family
;
2226 if (VECTORP (address
))
2228 p
= XVECTOR (address
);
2229 if (family
== AF_INET
)
2231 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2232 len
= sizeof (sin
->sin_addr
) + 1;
2233 i
= XINT (p
->contents
[--len
]);
2234 sin
->sin_port
= htons (i
);
2235 cp
= (unsigned char *)&sin
->sin_addr
;
2238 else if (STRINGP (address
))
2240 #ifdef HAVE_LOCAL_SOCKETS
2241 if (family
== AF_LOCAL
)
2243 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2244 cp
= SDATA (address
);
2245 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2246 sockun
->sun_path
[i
] = *cp
++;
2253 p
= XVECTOR (XCDR (address
));
2254 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2257 for (i
= 0; i
< len
; i
++)
2258 if (INTEGERP (p
->contents
[i
]))
2259 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2262 #ifdef DATAGRAM_SOCKETS
2263 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2265 doc
: /* Get the current datagram address associated with PROCESS. */)
2267 Lisp_Object process
;
2271 CHECK_PROCESS (process
);
2273 if (!DATAGRAM_CONN_P (process
))
2276 channel
= XINT (XPROCESS (process
)->infd
);
2277 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2278 datagram_address
[channel
].len
);
2281 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2283 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2284 Returns nil upon error setting address, ADDRESS otherwise. */)
2286 Lisp_Object process
, address
;
2291 CHECK_PROCESS (process
);
2293 if (!DATAGRAM_CONN_P (process
))
2296 channel
= XINT (XPROCESS (process
)->infd
);
2298 len
= get_lisp_to_sockaddr_size (address
, &family
);
2299 if (datagram_address
[channel
].len
!= len
)
2301 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2307 static struct socket_options
{
2308 /* The name of this option. Should be lowercase version of option
2309 name without SO_ prefix. */
2311 /* Length of name. */
2313 /* Option level SOL_... */
2315 /* Option number SO_... */
2317 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_STR
, SOPT_LINGER
} opttype
;
2318 } socket_options
[] =
2320 #ifdef SO_BINDTODEVICE
2321 { "bindtodevice", 12, SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_STR
},
2324 { "broadcast", 9, SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
},
2327 { "dontroute", 9, SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
},
2330 { "keepalive", 9, SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
},
2333 { "linger", 6, SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
},
2336 { "oobinline", 9, SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
},
2339 { "priority", 8, SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
},
2342 { "reuseaddr", 9, SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
},
2344 { 0, 0, 0, 0, SOPT_UNKNOWN
}
2347 /* Process list of socket options OPTS on socket S.
2348 Only check if options are supported is S < 0.
2349 If NO_ERROR is non-zero, continue silently if an option
2352 Each element specifies one option. An element is either a string
2353 "OPTION=VALUE" or a cons (OPTION . VALUE) where OPTION is a string
2357 set_socket_options (s
, opts
, no_error
)
2363 opts
= Fcons (opts
, Qnil
);
2365 while (CONSP (opts
))
2370 struct socket_options
*sopt
;
2384 name
= (char *) SDATA (opt
);
2385 else if (SYMBOLP (opt
))
2386 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2388 error ("Mal-formed option list");
2392 if (strncmp (name
, "no", 2) == 0)
2399 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2400 if (strncmp (name
, sopt
->name
, sopt
->nlen
) == 0)
2402 if (name
[sopt
->nlen
] == 0)
2404 if (name
[sopt
->nlen
] == '=')
2406 arg
= name
+ sopt
->nlen
+ 1;
2411 switch (sopt
->opttype
)
2419 optval
= (*arg
== '0' || *arg
== 'n') ? 0 : 1;
2420 else if (INTEGERP (val
))
2421 optval
= XINT (val
) == 0 ? 0 : 1;
2423 optval
= NILP (val
) ? 0 : 1;
2424 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2425 &optval
, sizeof (optval
));
2434 else if (INTEGERP (val
))
2435 optval
= XINT (val
);
2437 error ("Bad option argument for %s", name
);
2440 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2441 &optval
, sizeof (optval
));
2451 else if (STRINGP (val
))
2452 arg
= (char *) SDATA (val
);
2453 else if (XSYMBOL (val
))
2454 arg
= (char *) SDATA (SYMBOL_NAME (val
));
2456 error ("Invalid argument to %s option", name
);
2458 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2465 struct linger linger
;
2468 linger
.l_linger
= 0;
2475 if (*arg
== 'n' || *arg
== 't' || *arg
== 'y')
2476 linger
.l_onoff
= (*arg
== 'n') ? 0 : 1;
2478 linger
.l_linger
= atoi(arg
);
2480 else if (INTEGERP (val
))
2481 linger
.l_linger
= XINT (val
);
2483 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2484 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2485 &linger
, sizeof (linger
));
2494 error ("Unsupported option: %s", name
);
2496 if (ret
< 0 && ! no_error
)
2497 report_file_error ("Cannot set network option: %s", opt
);
2502 DEFUN ("set-network-process-options",
2503 Fset_network_process_options
, Sset_network_process_options
,
2505 doc
: /* Set one or more options for network process PROCESS.
2506 Each option is either a string "OPT=VALUE" or a cons (OPT . VALUE).
2507 A boolean value is false if it either zero or nil, true otherwise.
2509 The following options are known. Consult the relevant system manual
2510 pages for more information.
2512 bindtodevice=NAME -- bind to interface NAME, or remove binding if nil.
2513 broadcast=BOOL -- Allow send and receive of datagram broadcasts.
2514 dontroute=BOOL -- Only send to directly connected hosts.
2515 keepalive=BOOL -- Send keep-alive messages on network stream.
2516 linger=BOOL or TIMEOUT -- Send queued messages before closing.
2517 oobinline=BOOL -- Place out-of-band data in receive data stream.
2518 priority=INT -- Set protocol defined priority for sent packets.
2519 reuseaddr=BOOL -- Allow reusing a recently used address.
2521 usage: (set-network-process-options PROCESS &rest OPTIONS) */)
2526 Lisp_Object process
;
2530 CHECK_PROCESS (process
);
2531 if (nargs
> 1 && XINT (XPROCESS (process
)->infd
) >= 0)
2533 opts
= Flist (nargs
, args
);
2534 set_socket_options (XINT (XPROCESS (process
)->infd
), opts
, 0);
2539 /* A version of request_sigio suitable for a record_unwind_protect. */
2542 unwind_request_sigio (dummy
)
2545 if (interrupt_input
)
2550 /* Create a network stream/datagram client/server process. Treated
2551 exactly like a normal process when reading and writing. Primary
2552 differences are in status display and process deletion. A network
2553 connection has no PID; you cannot signal it. All you can do is
2554 stop/continue it and deactivate/close it via delete-process */
2556 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2558 doc
: /* Create and return a network server or client process.
2560 In Emacs, network connections are represented by process objects, so
2561 input and output work as for subprocesses and `delete-process' closes
2562 a network connection. However, a network process has no process id,
2563 it cannot be signalled, and the status codes are different from normal
2566 Arguments are specified as keyword/argument pairs. The following
2567 arguments are defined:
2569 :name NAME -- NAME is name for process. It is modified if necessary
2572 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2573 with the process. Process output goes at end of that buffer, unless
2574 you specify an output stream or filter function to handle the output.
2575 BUFFER may be also nil, meaning that this process is not associated
2578 :host HOST -- HOST is name of the host to connect to, or its IP
2579 address. The symbol `local' specifies the local host. If specified
2580 for a server process, it must be a valid name or address for the local
2581 host, and only clients connecting to that address will be accepted.
2583 :service SERVICE -- SERVICE is name of the service desired, or an
2584 integer specifying a port number to connect to. If SERVICE is t,
2585 a random port number is selected for the server.
2587 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2588 stream type connection, `datagram' creates a datagram type connection.
2590 :family FAMILY -- FAMILY is the address (and protocol) family for the
2591 service specified by HOST and SERVICE. The default address family is
2592 Inet (or IPv4) for the host and port number specified by HOST and
2593 SERVICE. Other address families supported are:
2594 local -- for a local (i.e. UNIX) address specified by SERVICE.
2596 :local ADDRESS -- ADDRESS is the local address used for the connection.
2597 This parameter is ignored when opening a client process. When specified
2598 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2600 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2601 connection. This parameter is ignored when opening a stream server
2602 process. For a datagram server process, it specifies the initial
2603 setting of the remote datagram address. When specified for a client
2604 process, the FAMILY, HOST, and SERVICE args are ignored.
2606 The format of ADDRESS depends on the address family:
2607 - An IPv4 address is represented as an vector of integers [A B C D P]
2608 corresponding to numeric IP address A.B.C.D and port number P.
2609 - A local address is represented as a string with the address in the
2610 local address space.
2611 - An "unsupported family" address is represented by a cons (F . AV)
2612 where F is the family number and AV is a vector containing the socket
2613 address data with one element per address data byte. Do not rely on
2614 this format in portable code, as it may depend on implementation
2615 defined constants, data sizes, and data structure alignment.
2617 :coding CODING -- CODING is coding system for this process.
2619 :options OPTIONS -- Set the specified options for the network process.
2620 See `set-network-process-options' for details.
2622 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2623 return without waiting for the connection to complete; instead, the
2624 sentinel function will be called with second arg matching "open" (if
2625 successful) or "failed" when the connect completes. Default is to use
2626 a blocking connect (i.e. wait) for stream type connections.
2628 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2629 running when emacs is exited.
2631 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2632 In the stopped state, a server process does not accept new
2633 connections, and a client process does not handle incoming traffic.
2634 The stopped state is cleared by `continue-process' and set by
2637 :filter FILTER -- Install FILTER as the process filter.
2639 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2640 process filter are multibyte, otherwise they are unibyte.
2641 If this keyword is not specified, the strings are multibyte iff
2642 `default-enable-multibyte-characters' is non-nil.
2644 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2646 :log LOG -- Install LOG as the server process log function. This
2647 function is called when the server accepts a network connection from a
2648 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2649 is the server process, CLIENT is the new process for the connection,
2650 and MESSAGE is a string.
2652 :plist PLIST -- Install PLIST as the new process' initial plist.
2654 :server BOOL -- if BOOL is non-nil, create a server process for the
2655 specified FAMILY, SERVICE, and connection type (stream or datagram).
2656 Default is a client process.
2658 A server process will listen for and accept connections from
2659 clients. When a client connection is accepted, a new network process
2660 is created for the connection with the following parameters:
2661 - The client's process name is constructed by concatenating the server
2662 process' NAME and a client identification string.
2663 - If the FILTER argument is non-nil, the client process will not get a
2664 separate process buffer; otherwise, the client's process buffer is a newly
2665 created buffer named after the server process' BUFFER name or process
2666 NAME concatenated with the client identification string.
2667 - The connection type and the process filter and sentinel parameters are
2668 inherited from the server process' TYPE, FILTER and SENTINEL.
2669 - The client process' contact info is set according to the client's
2670 addressing information (typically an IP address and a port number).
2671 - The client process' plist is initialized from the server's plist.
2673 Notice that the FILTER and SENTINEL args are never used directly by
2674 the server process. Also, the BUFFER argument is not used directly by
2675 the server process, but via the optional :log function, accepted (and
2676 failed) connections may be logged in the server process' buffer.
2678 The original argument list, modified with the actual connection
2679 information, is available via the `process-contact' function.
2681 usage: (make-network-process &rest ARGS) */)
2687 Lisp_Object contact
;
2688 struct Lisp_Process
*p
;
2689 #ifdef HAVE_GETADDRINFO
2690 struct addrinfo ai
, *res
, *lres
;
2691 struct addrinfo hints
;
2692 char *portstring
, portbuf
[128];
2693 #else /* HAVE_GETADDRINFO */
2694 struct _emacs_addrinfo
2700 struct sockaddr
*ai_addr
;
2701 struct _emacs_addrinfo
*ai_next
;
2703 #endif /* HAVE_GETADDRINFO */
2704 struct sockaddr_in address_in
;
2705 #ifdef HAVE_LOCAL_SOCKETS
2706 struct sockaddr_un address_un
;
2711 int s
= -1, outch
, inch
;
2712 struct gcpro gcpro1
;
2714 int count
= SPECPDL_INDEX ();
2716 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2718 Lisp_Object name
, buffer
, host
, service
, address
;
2719 Lisp_Object filter
, sentinel
;
2720 int is_non_blocking_client
= 0;
2728 /* Save arguments for process-contact and clone-process. */
2729 contact
= Flist (nargs
, args
);
2733 /* Ensure socket support is loaded if available. */
2734 init_winsock (TRUE
);
2737 /* :type TYPE (nil: stream, datagram */
2738 tem
= Fplist_get (contact
, QCtype
);
2740 socktype
= SOCK_STREAM
;
2741 #ifdef DATAGRAM_SOCKETS
2742 else if (EQ (tem
, Qdatagram
))
2743 socktype
= SOCK_DGRAM
;
2746 error ("Unsupported connection type");
2749 tem
= Fplist_get (contact
, QCserver
);
2752 /* Don't support network sockets when non-blocking mode is
2753 not available, since a blocked Emacs is not useful. */
2754 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2755 error ("Network servers not supported");
2761 /* Make QCaddress an alias for :local (server) or :remote (client). */
2762 QCaddress
= is_server
? QClocal
: QCremote
;
2765 if (!is_server
&& socktype
== SOCK_STREAM
2766 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2768 #ifndef NON_BLOCKING_CONNECT
2769 error ("Non-blocking connect not supported");
2771 is_non_blocking_client
= 1;
2775 name
= Fplist_get (contact
, QCname
);
2776 buffer
= Fplist_get (contact
, QCbuffer
);
2777 filter
= Fplist_get (contact
, QCfilter
);
2778 sentinel
= Fplist_get (contact
, QCsentinel
);
2780 CHECK_STRING (name
);
2783 /* Let's handle TERM before things get complicated ... */
2784 host
= Fplist_get (contact
, QChost
);
2785 CHECK_STRING (host
);
2787 service
= Fplist_get (contact
, QCservice
);
2788 if (INTEGERP (service
))
2789 port
= htons ((unsigned short) XINT (service
));
2792 struct servent
*svc_info
;
2793 CHECK_STRING (service
);
2794 svc_info
= getservbyname (SDATA (service
), "tcp");
2796 error ("Unknown service: %s", SDATA (service
));
2797 port
= svc_info
->s_port
;
2800 s
= connect_server (0);
2802 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2803 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2804 send_command (s
, C_DUMB
, 1, 0);
2806 #else /* not TERM */
2808 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2809 ai
.ai_socktype
= socktype
;
2814 /* :local ADDRESS or :remote ADDRESS */
2815 address
= Fplist_get (contact
, QCaddress
);
2816 if (!NILP (address
))
2818 host
= service
= Qnil
;
2820 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2821 error ("Malformed :address");
2822 ai
.ai_family
= family
;
2823 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2824 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2828 /* :family FAMILY -- nil (for Inet), local, or integer. */
2829 tem
= Fplist_get (contact
, QCfamily
);
2831 family
= XINT (tem
);
2836 #ifdef HAVE_LOCAL_SOCKETS
2837 else if (EQ (tem
, Qlocal
))
2842 error ("Unknown address family");
2843 ai
.ai_family
= family
;
2845 /* :service SERVICE -- string, integer (port number), or t (random port). */
2846 service
= Fplist_get (contact
, QCservice
);
2848 #ifdef HAVE_LOCAL_SOCKETS
2849 if (family
== AF_LOCAL
)
2851 /* Host is not used. */
2853 CHECK_STRING (service
);
2854 bzero (&address_un
, sizeof address_un
);
2855 address_un
.sun_family
= AF_LOCAL
;
2856 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
2857 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
2858 ai
.ai_addrlen
= sizeof address_un
;
2863 /* :host HOST -- hostname, ip address, or 'local for localhost. */
2864 host
= Fplist_get (contact
, QChost
);
2867 if (EQ (host
, Qlocal
))
2868 host
= build_string ("localhost");
2869 CHECK_STRING (host
);
2872 /* Slow down polling to every ten seconds.
2873 Some kernels have a bug which causes retrying connect to fail
2874 after a connect. Polling can interfere with gethostbyname too. */
2875 #ifdef POLL_FOR_INPUT
2876 if (socktype
== SOCK_STREAM
)
2878 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
2879 bind_polling_period (10);
2883 #ifdef HAVE_GETADDRINFO
2884 /* If we have a host, use getaddrinfo to resolve both host and service.
2885 Otherwise, use getservbyname to lookup the service. */
2889 /* SERVICE can either be a string or int.
2890 Convert to a C string for later use by getaddrinfo. */
2891 if (EQ (service
, Qt
))
2893 else if (INTEGERP (service
))
2895 sprintf (portbuf
, "%ld", (long) XINT (service
));
2896 portstring
= portbuf
;
2900 CHECK_STRING (service
);
2901 portstring
= SDATA (service
);
2906 memset (&hints
, 0, sizeof (hints
));
2908 hints
.ai_family
= NILP (Fplist_member (contact
, QCfamily
)) ? AF_UNSPEC
: family
;
2909 hints
.ai_socktype
= socktype
;
2910 hints
.ai_protocol
= 0;
2911 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
2913 #ifdef HAVE_GAI_STRERROR
2914 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
2916 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
2922 #endif /* HAVE_GETADDRINFO */
2924 /* We end up here if getaddrinfo is not defined, or in case no hostname
2925 has been specified (e.g. for a local server process). */
2927 if (EQ (service
, Qt
))
2929 else if (INTEGERP (service
))
2930 port
= htons ((unsigned short) XINT (service
));
2933 struct servent
*svc_info
;
2934 CHECK_STRING (service
);
2935 svc_info
= getservbyname (SDATA (service
),
2936 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
2938 error ("Unknown service: %s", SDATA (service
));
2939 port
= svc_info
->s_port
;
2942 bzero (&address_in
, sizeof address_in
);
2943 address_in
.sin_family
= family
;
2944 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
2945 address_in
.sin_port
= port
;
2947 #ifndef HAVE_GETADDRINFO
2950 struct hostent
*host_info_ptr
;
2952 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
2953 as it may `hang' emacs for a very long time. */
2956 host_info_ptr
= gethostbyname (SDATA (host
));
2961 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
2962 host_info_ptr
->h_length
);
2963 family
= host_info_ptr
->h_addrtype
;
2964 address_in
.sin_family
= family
;
2967 /* Attempt to interpret host as numeric inet address */
2969 IN_ADDR numeric_addr
;
2970 numeric_addr
= inet_addr ((char *) SDATA (host
));
2971 if (NUMERIC_ADDR_ERROR
)
2972 error ("Unknown host \"%s\"", SDATA (host
));
2974 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
2975 sizeof (address_in
.sin_addr
));
2979 #endif /* not HAVE_GETADDRINFO */
2981 ai
.ai_family
= family
;
2982 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
2983 ai
.ai_addrlen
= sizeof address_in
;
2987 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
2988 when connect is interrupted. So let's not let it get interrupted.
2989 Note we do not turn off polling, because polling is only used
2990 when not interrupt_input, and thus not normally used on the systems
2991 which have this bug. On systems which use polling, there's no way
2992 to quit if polling is turned off. */
2994 && !is_server
&& socktype
== SOCK_STREAM
)
2996 /* Comment from KFS: The original open-network-stream code
2997 didn't unwind protect this, but it seems like the proper
2998 thing to do. In any case, I don't see how it could harm to
2999 do this -- and it makes cleanup (using unbind_to) easier. */
3000 record_unwind_protect (unwind_request_sigio
, Qnil
);
3004 /* Do this in case we never enter the for-loop below. */
3005 count1
= SPECPDL_INDEX ();
3008 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3010 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3017 #ifdef DATAGRAM_SOCKETS
3018 if (!is_server
&& socktype
== SOCK_DGRAM
)
3020 #endif /* DATAGRAM_SOCKETS */
3022 #ifdef NON_BLOCKING_CONNECT
3023 if (is_non_blocking_client
)
3026 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3028 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3040 /* Make us close S if quit. */
3041 record_unwind_protect (close_file_unwind
, make_number (s
));
3045 /* Configure as a server socket. */
3046 #ifdef HAVE_LOCAL_SOCKETS
3047 if (family
!= AF_LOCAL
)
3051 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3052 report_file_error ("Cannot set reuse option on server socket.", Qnil
);
3055 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3056 report_file_error ("Cannot bind server socket", Qnil
);
3058 #ifdef HAVE_GETSOCKNAME
3059 if (EQ (service
, Qt
))
3061 struct sockaddr_in sa1
;
3062 int len1
= sizeof (sa1
);
3063 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3065 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3066 service
= make_number (ntohs (sa1
.sin_port
));
3067 contact
= Fplist_put (contact
, QCservice
, service
);
3072 if (socktype
== SOCK_STREAM
&& listen (s
, 5))
3073 report_file_error ("Cannot listen on server socket", Qnil
);
3083 /* This turns off all alarm-based interrupts; the
3084 bind_polling_period call above doesn't always turn all the
3085 short-interval ones off, especially if interrupt_input is
3088 It'd be nice to be able to control the connect timeout
3089 though. Would non-blocking connect calls be portable?
3091 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3093 turn_on_atimers (0);
3095 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3098 turn_on_atimers (1);
3100 if (ret
== 0 || xerrno
== EISCONN
)
3102 /* The unwind-protect will be discarded afterwards.
3103 Likewise for immediate_quit. */
3107 #ifdef NON_BLOCKING_CONNECT
3109 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3113 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3121 if (xerrno
== EINTR
)
3123 if (xerrno
== EADDRINUSE
&& retry
< 20)
3125 /* A delay here is needed on some FreeBSD systems,
3126 and it is harmless, since this retrying takes time anyway
3127 and should be infrequent. */
3128 Fsleep_for (make_number (1), Qnil
);
3133 /* Discard the unwind protect closing S. */
3134 specpdl_ptr
= specpdl
+ count1
;
3141 #ifdef DATAGRAM_SOCKETS
3142 if (socktype
== SOCK_DGRAM
)
3144 if (datagram_address
[s
].sa
)
3146 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3147 datagram_address
[s
].len
= lres
->ai_addrlen
;
3151 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3152 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3155 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3156 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3157 conv_lisp_to_sockaddr (rfamily
, remote
,
3158 datagram_address
[s
].sa
, rlen
);
3162 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3165 contact
= Fplist_put (contact
, QCaddress
,
3166 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3167 #ifdef HAVE_GETSOCKNAME
3170 struct sockaddr_in sa1
;
3171 int len1
= sizeof (sa1
);
3172 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3173 contact
= Fplist_put (contact
, QClocal
,
3174 conv_sockaddr_to_lisp (&sa1
, len1
));
3179 #ifdef HAVE_GETADDRINFO
3186 /* Discard the unwind protect for closing S, if any. */
3187 specpdl_ptr
= specpdl
+ count1
;
3189 /* Unwind bind_polling_period and request_sigio. */
3190 unbind_to (count
, Qnil
);
3194 /* If non-blocking got this far - and failed - assume non-blocking is
3195 not supported after all. This is probably a wrong assumption, but
3196 the normal blocking calls to open-network-stream handles this error
3198 if (is_non_blocking_client
)
3203 report_file_error ("make server process failed", contact
);
3205 report_file_error ("make client process failed", contact
);
3208 tem
= Fplist_get (contact
, QCoptions
);
3210 set_socket_options (s
, tem
, 1);
3212 #endif /* not TERM */
3218 buffer
= Fget_buffer_create (buffer
);
3219 proc
= make_process (name
);
3221 chan_process
[inch
] = proc
;
3224 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3227 fcntl (inch
, F_SETFL
, O_NDELAY
);
3231 p
= XPROCESS (proc
);
3233 p
->childp
= contact
;
3234 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3237 p
->sentinel
= sentinel
;
3239 p
->filter_multibyte
= buffer_defaults
.enable_multibyte_characters
;
3240 /* Override the above only if :filter-multibyte is specified. */
3241 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3242 p
->filter_multibyte
= Fplist_get (contact
, QCfilter_multibyte
);
3243 p
->log
= Fplist_get (contact
, QClog
);
3244 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3245 p
->kill_without_query
= Qt
;
3246 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3249 XSETINT (p
->infd
, inch
);
3250 XSETINT (p
->outfd
, outch
);
3251 if (is_server
&& socktype
== SOCK_STREAM
)
3252 p
->status
= Qlisten
;
3254 #ifdef NON_BLOCKING_CONNECT
3255 if (is_non_blocking_client
)
3257 /* We may get here if connect did succeed immediately. However,
3258 in that case, we still need to signal this like a non-blocking
3260 p
->status
= Qconnect
;
3261 if (!FD_ISSET (inch
, &connect_wait_mask
))
3263 FD_SET (inch
, &connect_wait_mask
);
3264 num_pending_connects
++;
3269 /* A server may have a client filter setting of Qt, but it must
3270 still listen for incoming connects unless it is stopped. */
3271 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3272 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3274 FD_SET (inch
, &input_wait_mask
);
3275 FD_SET (inch
, &non_keyboard_wait_mask
);
3278 if (inch
> max_process_desc
)
3279 max_process_desc
= inch
;
3281 tem
= Fplist_member (contact
, QCcoding
);
3282 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3283 tem
= Qnil
; /* No error message (too late!). */
3286 /* Setup coding systems for communicating with the network stream. */
3287 struct gcpro gcpro1
;
3288 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3289 Lisp_Object coding_systems
= Qt
;
3290 Lisp_Object args
[5], val
;
3293 val
= XCAR (XCDR (tem
));
3294 else if (!NILP (Vcoding_system_for_read
))
3295 val
= Vcoding_system_for_read
;
3296 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3297 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3298 /* We dare not decode end-of-line format by setting VAL to
3299 Qraw_text, because the existing Emacs Lisp libraries
3300 assume that they receive bare code including a sequene of
3305 if (NILP (host
) || NILP (service
))
3306 coding_systems
= Qnil
;
3309 args
[0] = Qopen_network_stream
, args
[1] = name
,
3310 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3312 coding_systems
= Ffind_operation_coding_system (5, args
);
3315 if (CONSP (coding_systems
))
3316 val
= XCAR (coding_systems
);
3317 else if (CONSP (Vdefault_process_coding_system
))
3318 val
= XCAR (Vdefault_process_coding_system
);
3322 p
->decode_coding_system
= val
;
3325 val
= XCAR (XCDR (tem
));
3326 else if (!NILP (Vcoding_system_for_write
))
3327 val
= Vcoding_system_for_write
;
3328 else if (NILP (current_buffer
->enable_multibyte_characters
))
3332 if (EQ (coding_systems
, Qt
))
3334 if (NILP (host
) || NILP (service
))
3335 coding_systems
= Qnil
;
3338 args
[0] = Qopen_network_stream
, args
[1] = name
,
3339 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3341 coding_systems
= Ffind_operation_coding_system (5, args
);
3345 if (CONSP (coding_systems
))
3346 val
= XCDR (coding_systems
);
3347 else if (CONSP (Vdefault_process_coding_system
))
3348 val
= XCDR (Vdefault_process_coding_system
);
3352 p
->encode_coding_system
= val
;
3354 setup_process_coding_systems (proc
);
3356 p
->decoding_buf
= make_uninit_string (0);
3357 p
->decoding_carryover
= make_number (0);
3358 p
->encoding_buf
= make_uninit_string (0);
3359 p
->encoding_carryover
= make_number (0);
3361 p
->inherit_coding_system_flag
3362 = (!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
3368 #endif /* HAVE_SOCKETS */
3374 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3375 doc
: /* Return an alist of all network interfaces and their network address.
3376 Each element is a cons, the car of which is a string containing the
3377 interface name, and the cdr is the network address in internal
3378 format; see the description of ADDRESS in 'make-network-process'. */)
3381 struct ifconf ifconf
;
3382 struct ifreq
*ifreqs
= NULL
;
3387 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3393 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3394 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3401 ifconf
.ifc_len
= buf_size
;
3402 ifconf
.ifc_req
= ifreqs
;
3403 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3409 if (ifconf
.ifc_len
== buf_size
)
3413 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3416 while (--ifaces
>= 0)
3418 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3419 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3420 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3422 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3423 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3424 res
= Fcons (Fcons (build_string (namebuf
),
3425 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3426 sizeof (struct sockaddr
))),
3434 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3441 static struct ifflag_def ifflag_table
[] = {
3445 #ifdef IFF_BROADCAST
3446 { IFF_BROADCAST
, "broadcast" },
3449 { IFF_DEBUG
, "debug" },
3452 { IFF_LOOPBACK
, "loopback" },
3454 #ifdef IFF_POINTOPOINT
3455 { IFF_POINTOPOINT
, "pointopoint" },
3458 { IFF_RUNNING
, "running" },
3461 { IFF_NOARP
, "noarp" },
3464 { IFF_PROMISC
, "promisc" },
3466 #ifdef IFF_NOTRAILERS
3467 { IFF_NOTRAILERS
, "notrailers" },
3470 { IFF_ALLMULTI
, "allmulti" },
3473 { IFF_MASTER
, "master" },
3476 { IFF_SLAVE
, "slave" },
3478 #ifdef IFF_MULTICAST
3479 { IFF_MULTICAST
, "multicast" },
3482 { IFF_PORTSEL
, "portsel" },
3484 #ifdef IFF_AUTOMEDIA
3485 { IFF_AUTOMEDIA
, "automedia" },
3488 { IFF_DYNAMIC
, "dynamic" },
3493 DEFUN ("get-network-interface-info", Fget_network_interface_info
, Sget_network_interface_info
, 1, 1, 0,
3494 doc
: /* Return information about network interface named IFNAME.
3495 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3496 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3497 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3498 FLAGS is the current flags of the interface. */)
3503 Lisp_Object res
= Qnil
;
3508 CHECK_STRING (ifname
);
3510 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3511 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3513 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3519 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3521 int flags
= rq
.ifr_flags
;
3522 struct ifflag_def
*fp
;
3526 for (fp
= ifflag_table
; flags
!= 0 && fp
; fp
++)
3528 if (flags
& fp
->flag_bit
)
3530 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3531 flags
-= fp
->flag_bit
;
3534 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3536 if (flags
& (1 << fnum
))
3538 elt
= Fcons (make_number (fnum
), elt
);
3543 res
= Fcons (elt
, res
);
3546 #ifdef SIOCGIFHWADDR
3547 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3549 Lisp_Object hwaddr
= Fmake_vector (6, Qnil
);
3550 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3554 for (n
= 0; n
< 6; n
++)
3555 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3556 elt
= Fcons (XINT (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3559 res
= Fcons (elt
, res
);
3562 #ifdef SIOCGIFNETMASK
3563 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3566 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3569 res
= Fcons (elt
, res
);
3572 #ifdef SIOCGIFBRDADDR
3573 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3576 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3579 res
= Fcons (elt
, res
);
3583 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3586 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3589 res
= Fcons (elt
, res
);
3593 return any
? res
: Qnil
;
3596 #endif /* HAVE_SOCKETS */
3599 deactivate_process (proc
)
3602 register int inchannel
, outchannel
;
3603 register struct Lisp_Process
*p
= XPROCESS (proc
);
3605 inchannel
= XINT (p
->infd
);
3606 outchannel
= XINT (p
->outfd
);
3610 /* Beware SIGCHLD hereabouts. */
3611 flush_pending_output (inchannel
);
3614 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3615 sys$
dassgn (outchannel
);
3616 vs
= get_vms_process_pointer (p
->pid
);
3618 give_back_vms_process_stuff (vs
);
3621 emacs_close (inchannel
);
3622 if (outchannel
>= 0 && outchannel
!= inchannel
)
3623 emacs_close (outchannel
);
3626 XSETINT (p
->infd
, -1);
3627 XSETINT (p
->outfd
, -1);
3628 #ifdef DATAGRAM_SOCKETS
3629 if (DATAGRAM_CHAN_P (inchannel
))
3631 xfree (datagram_address
[inchannel
].sa
);
3632 datagram_address
[inchannel
].sa
= 0;
3633 datagram_address
[inchannel
].len
= 0;
3636 chan_process
[inchannel
] = Qnil
;
3637 FD_CLR (inchannel
, &input_wait_mask
);
3638 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3639 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3641 FD_CLR (inchannel
, &connect_wait_mask
);
3642 if (--num_pending_connects
< 0)
3645 if (inchannel
== max_process_desc
)
3648 /* We just closed the highest-numbered process input descriptor,
3649 so recompute the highest-numbered one now. */
3650 max_process_desc
= 0;
3651 for (i
= 0; i
< MAXDESC
; i
++)
3652 if (!NILP (chan_process
[i
]))
3653 max_process_desc
= i
;
3658 /* Close all descriptors currently in use for communication
3659 with subprocess. This is used in a newly-forked subprocess
3660 to get rid of irrelevant descriptors. */
3663 close_process_descs ()
3667 for (i
= 0; i
< MAXDESC
; i
++)
3669 Lisp_Object process
;
3670 process
= chan_process
[i
];
3671 if (!NILP (process
))
3673 int in
= XINT (XPROCESS (process
)->infd
);
3674 int out
= XINT (XPROCESS (process
)->outfd
);
3677 if (out
>= 0 && in
!= out
)
3684 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3686 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3687 It is read into the process' buffers or given to their filter functions.
3688 Non-nil arg PROCESS means do not return until some output has been received
3690 Non-nil second arg TIMEOUT and third arg TIMEOUT-MSECS are number of
3691 seconds and microseconds to wait; return after that much time whether
3692 or not there is input.
3693 Return non-nil iff we received any output before the timeout expired. */)
3694 (process
, timeout
, timeout_msecs
)
3695 register Lisp_Object process
, timeout
, timeout_msecs
;
3700 if (! NILP (process
))
3701 CHECK_PROCESS (process
);
3703 if (! NILP (timeout_msecs
))
3705 CHECK_NUMBER (timeout_msecs
);
3706 useconds
= XINT (timeout_msecs
);
3707 if (!INTEGERP (timeout
))
3708 XSETINT (timeout
, 0);
3711 int carry
= useconds
/ 1000000;
3713 XSETINT (timeout
, XINT (timeout
) + carry
);
3714 useconds
-= carry
* 1000000;
3716 /* I think this clause is necessary because C doesn't
3717 guarantee a particular rounding direction for negative
3721 XSETINT (timeout
, XINT (timeout
) - 1);
3722 useconds
+= 1000000;
3729 if (! NILP (timeout
))
3731 CHECK_NUMBER (timeout
);
3732 seconds
= XINT (timeout
);
3733 if (seconds
< 0 || (seconds
== 0 && useconds
== 0))
3737 seconds
= NILP (process
) ? -1 : 0;
3740 XSETFASTINT (process
, 0);
3743 (wait_reading_process_input (seconds
, useconds
, process
, 0)
3747 /* Accept a connection for server process SERVER on CHANNEL. */
3749 static int connect_counter
= 0;
3752 server_accept_connection (server
, channel
)
3756 Lisp_Object proc
, caller
, name
, buffer
;
3757 Lisp_Object contact
, host
, service
;
3758 struct Lisp_Process
*ps
= XPROCESS (server
);
3759 struct Lisp_Process
*p
;
3763 struct sockaddr_in in
;
3764 #ifdef HAVE_LOCAL_SOCKETS
3765 struct sockaddr_un un
;
3768 int len
= sizeof saddr
;
3770 s
= accept (channel
, &saddr
.sa
, &len
);
3779 if (code
== EWOULDBLOCK
)
3783 if (!NILP (ps
->log
))
3784 call3 (ps
->log
, server
, Qnil
,
3785 concat3 (build_string ("accept failed with code"),
3786 Fnumber_to_string (make_number (code
)),
3787 build_string ("\n")));
3793 /* Setup a new process to handle the connection. */
3795 /* Generate a unique identification of the caller, and build contact
3796 information for this process. */
3799 switch (saddr
.sa
.sa_family
)
3803 Lisp_Object args
[5];
3804 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
3805 args
[0] = build_string ("%d.%d.%d.%d");
3806 args
[1] = make_number (*ip
++);
3807 args
[2] = make_number (*ip
++);
3808 args
[3] = make_number (*ip
++);
3809 args
[4] = make_number (*ip
++);
3810 host
= Fformat (5, args
);
3811 service
= make_number (ntohs (saddr
.in
.sin_port
));
3813 args
[0] = build_string (" <%s:%d>");
3816 caller
= Fformat (3, args
);
3820 #ifdef HAVE_LOCAL_SOCKETS
3824 caller
= Fnumber_to_string (make_number (connect_counter
));
3825 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
3829 /* Create a new buffer name for this process if it doesn't have a
3830 filter. The new buffer name is based on the buffer name or
3831 process name of the server process concatenated with the caller
3834 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
3838 buffer
= ps
->buffer
;
3840 buffer
= Fbuffer_name (buffer
);
3845 buffer
= concat2 (buffer
, caller
);
3846 buffer
= Fget_buffer_create (buffer
);
3850 /* Generate a unique name for the new server process. Combine the
3851 server process name with the caller identification. */
3853 name
= concat2 (ps
->name
, caller
);
3854 proc
= make_process (name
);
3856 chan_process
[s
] = proc
;
3859 fcntl (s
, F_SETFL
, O_NONBLOCK
);
3862 fcntl (s
, F_SETFL
, O_NDELAY
);
3866 p
= XPROCESS (proc
);
3868 /* Build new contact information for this setup. */
3869 contact
= Fcopy_sequence (ps
->childp
);
3870 contact
= Fplist_put (contact
, QCserver
, Qnil
);
3871 contact
= Fplist_put (contact
, QChost
, host
);
3872 if (!NILP (service
))
3873 contact
= Fplist_put (contact
, QCservice
, service
);
3874 contact
= Fplist_put (contact
, QCremote
,
3875 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
3876 #ifdef HAVE_GETSOCKNAME
3878 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
3879 contact
= Fplist_put (contact
, QClocal
,
3880 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
3883 p
->childp
= contact
;
3884 p
->plist
= Fcopy_sequence (ps
->plist
);
3887 p
->sentinel
= ps
->sentinel
;
3888 p
->filter
= ps
->filter
;
3891 XSETINT (p
->infd
, s
);
3892 XSETINT (p
->outfd
, s
);
3895 /* Client processes for accepted connections are not stopped initially. */
3896 if (!EQ (p
->filter
, Qt
))
3898 FD_SET (s
, &input_wait_mask
);
3899 FD_SET (s
, &non_keyboard_wait_mask
);
3902 if (s
> max_process_desc
)
3903 max_process_desc
= s
;
3905 /* Setup coding system for new process based on server process.
3906 This seems to be the proper thing to do, as the coding system
3907 of the new process should reflect the settings at the time the
3908 server socket was opened; not the current settings. */
3910 p
->decode_coding_system
= ps
->decode_coding_system
;
3911 p
->encode_coding_system
= ps
->encode_coding_system
;
3912 setup_process_coding_systems (proc
);
3914 p
->decoding_buf
= make_uninit_string (0);
3915 p
->decoding_carryover
= make_number (0);
3916 p
->encoding_buf
= make_uninit_string (0);
3917 p
->encoding_carryover
= make_number (0);
3919 p
->inherit_coding_system_flag
3920 = (NILP (buffer
) ? Qnil
: ps
->inherit_coding_system_flag
);
3922 if (!NILP (ps
->log
))
3923 call3 (ps
->log
, server
, proc
,
3924 concat3 (build_string ("accept from "),
3925 (STRINGP (host
) ? host
: build_string ("-")),
3926 build_string ("\n")));
3928 if (!NILP (p
->sentinel
))
3929 exec_sentinel (proc
,
3930 concat3 (build_string ("open from "),
3931 (STRINGP (host
) ? host
: build_string ("-")),
3932 build_string ("\n")));
3935 /* This variable is different from waiting_for_input in keyboard.c.
3936 It is used to communicate to a lisp process-filter/sentinel (via the
3937 function Fwaiting_for_user_input_p below) whether emacs was waiting
3938 for user-input when that process-filter was called.
3939 waiting_for_input cannot be used as that is by definition 0 when
3940 lisp code is being evalled.
3941 This is also used in record_asynch_buffer_change.
3942 For that purpose, this must be 0
3943 when not inside wait_reading_process_input. */
3944 static int waiting_for_user_input_p
;
3946 /* This is here so breakpoints can be put on it. */
3948 wait_reading_process_input_1 ()
3952 /* Read and dispose of subprocess output while waiting for timeout to
3953 elapse and/or keyboard input to be available.
3956 timeout in seconds, or
3957 zero for no limit, or
3958 -1 means gobble data immediately available but don't wait for any.
3961 an additional duration to wait, measured in microseconds.
3962 If this is nonzero and time_limit is 0, then the timeout
3963 consists of MICROSECS only.
3965 READ_KBD is a lisp value:
3966 0 to ignore keyboard input, or
3967 1 to return when input is available, or
3968 -1 meaning caller will actually read the input, so don't throw to
3969 the quit handler, or
3970 a cons cell, meaning wait until its car is non-nil
3971 (and gobble terminal input into the buffer if any arrives), or
3972 a process object, meaning wait until something arrives from that
3973 process. The return value is true iff we read some input from
3976 DO_DISPLAY != 0 means redisplay should be done to show subprocess
3977 output that arrives.
3979 If READ_KBD is a pointer to a struct Lisp_Process, then the
3980 function returns true iff we received input from that process
3981 before the timeout elapsed.
3982 Otherwise, return true iff we received input from any process. */
3985 wait_reading_process_input (time_limit
, microsecs
, read_kbd
, do_display
)
3986 int time_limit
, microsecs
;
3987 Lisp_Object read_kbd
;
3990 register int channel
, nfds
;
3991 static SELECT_TYPE Available
;
3992 static SELECT_TYPE Connecting
;
3993 int check_connect
, no_avail
;
3996 EMACS_TIME timeout
, end_time
;
3997 int wait_channel
= -1;
3998 struct Lisp_Process
*wait_proc
= 0;
3999 int got_some_input
= 0;
4000 /* Either nil or a cons cell, the car of which is of interest and
4001 may be changed outside of this routine. */
4002 Lisp_Object wait_for_cell
= Qnil
;
4004 FD_ZERO (&Available
);
4005 FD_ZERO (&Connecting
);
4007 /* If read_kbd is a process to watch, set wait_proc and wait_channel
4009 if (PROCESSP (read_kbd
))
4011 wait_proc
= XPROCESS (read_kbd
);
4012 wait_channel
= XINT (wait_proc
->infd
);
4013 XSETFASTINT (read_kbd
, 0);
4016 /* If waiting for non-nil in a cell, record where. */
4017 if (CONSP (read_kbd
))
4019 wait_for_cell
= read_kbd
;
4020 XSETFASTINT (read_kbd
, 0);
4023 waiting_for_user_input_p
= XINT (read_kbd
);
4025 /* Since we may need to wait several times,
4026 compute the absolute time to return at. */
4027 if (time_limit
|| microsecs
)
4029 EMACS_GET_TIME (end_time
);
4030 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4031 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4033 #ifdef POLL_INTERRUPTED_SYS_CALL
4034 /* AlainF 5-Jul-1996
4035 HP-UX 10.10 seem to have problems with signals coming in
4036 Causes "poll: interrupted system call" messages when Emacs is run
4038 Turn off periodic alarms (in case they are in use),
4039 and then turn off any other atimers. */
4041 turn_on_atimers (0);
4042 #endif /* POLL_INTERRUPTED_SYS_CALL */
4046 int timeout_reduced_for_timers
= 0;
4048 /* If calling from keyboard input, do not quit
4049 since we want to return C-g as an input character.
4050 Otherwise, do pending quit if requested. */
4051 if (XINT (read_kbd
) >= 0)
4054 /* Exit now if the cell we're waiting for became non-nil. */
4055 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4058 /* Compute time from now till when time limit is up */
4059 /* Exit if already run out */
4060 if (time_limit
== -1)
4062 /* -1 specified for timeout means
4063 gobble output available now
4064 but don't wait at all. */
4066 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4068 else if (time_limit
|| microsecs
)
4070 EMACS_GET_TIME (timeout
);
4071 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4072 if (EMACS_TIME_NEG_P (timeout
))
4077 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4080 /* Normally we run timers here.
4081 But not if wait_for_cell; in those cases,
4082 the wait is supposed to be short,
4083 and those callers cannot handle running arbitrary Lisp code here. */
4084 if (NILP (wait_for_cell
))
4086 EMACS_TIME timer_delay
;
4090 int old_timers_run
= timers_run
;
4091 struct buffer
*old_buffer
= current_buffer
;
4093 timer_delay
= timer_check (1);
4095 /* If a timer has run, this might have changed buffers
4096 an alike. Make read_key_sequence aware of that. */
4097 if (timers_run
!= old_timers_run
4098 && old_buffer
!= current_buffer
4099 && waiting_for_user_input_p
== -1)
4100 record_asynch_buffer_change ();
4102 if (timers_run
!= old_timers_run
&& do_display
)
4103 /* We must retry, since a timer may have requeued itself
4104 and that could alter the time_delay. */
4105 redisplay_preserve_echo_area (9);
4109 while (!detect_input_pending ());
4111 /* If there is unread keyboard input, also return. */
4112 if (XINT (read_kbd
) != 0
4113 && requeued_events_pending_p ())
4116 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4118 EMACS_TIME difference
;
4119 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4120 if (EMACS_TIME_NEG_P (difference
))
4122 timeout
= timer_delay
;
4123 timeout_reduced_for_timers
= 1;
4126 /* If time_limit is -1, we are not going to wait at all. */
4127 else if (time_limit
!= -1)
4129 /* This is so a breakpoint can be put here. */
4130 wait_reading_process_input_1 ();
4134 /* Cause C-g and alarm signals to take immediate action,
4135 and cause input available signals to zero out timeout.
4137 It is important that we do this before checking for process
4138 activity. If we get a SIGCHLD after the explicit checks for
4139 process activity, timeout is the only way we will know. */
4140 if (XINT (read_kbd
) < 0)
4141 set_waiting_for_input (&timeout
);
4143 /* If status of something has changed, and no input is
4144 available, notify the user of the change right away. After
4145 this explicit check, we'll let the SIGCHLD handler zap
4146 timeout to get our attention. */
4147 if (update_tick
!= process_tick
&& do_display
)
4149 SELECT_TYPE Atemp
, Ctemp
;
4151 Atemp
= input_wait_mask
;
4153 /* On Mac OS X, the SELECT system call always says input is
4154 present (for reading) at stdin, even when none is. This
4155 causes the call to SELECT below to return 1 and
4156 status_notify not to be called. As a result output of
4157 subprocesses are incorrectly discarded. */
4160 Ctemp
= connect_wait_mask
;
4161 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4162 if ((select (max (max_process_desc
, max_keyboard_desc
) + 1,
4164 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4165 (SELECT_TYPE
*)0, &timeout
)
4168 /* It's okay for us to do this and then continue with
4169 the loop, since timeout has already been zeroed out. */
4170 clear_waiting_for_input ();
4175 /* Don't wait for output from a non-running process. Just
4176 read whatever data has already been received. */
4177 if (wait_proc
!= 0 && !NILP (wait_proc
->raw_status_low
))
4178 update_status (wait_proc
);
4180 && ! EQ (wait_proc
->status
, Qrun
)
4181 && ! EQ (wait_proc
->status
, Qconnect
))
4183 int nread
, total_nread
= 0;
4185 clear_waiting_for_input ();
4186 XSETPROCESS (proc
, wait_proc
);
4188 /* Read data from the process, until we exhaust it. */
4189 while (XINT (wait_proc
->infd
) >= 0)
4191 nread
= read_process_output (proc
, XINT (wait_proc
->infd
));
4197 total_nread
+= nread
;
4199 else if (nread
== -1 && EIO
== errno
)
4203 else if (nread
== -1 && EAGAIN
== errno
)
4207 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4211 if (total_nread
> 0 && do_display
)
4212 redisplay_preserve_echo_area (10);
4217 /* Wait till there is something to do */
4219 if (!NILP (wait_for_cell
))
4221 Available
= non_process_wait_mask
;
4226 if (! XINT (read_kbd
))
4227 Available
= non_keyboard_wait_mask
;
4229 Available
= input_wait_mask
;
4230 check_connect
= (num_pending_connects
> 0);
4233 /* If frame size has changed or the window is newly mapped,
4234 redisplay now, before we start to wait. There is a race
4235 condition here; if a SIGIO arrives between now and the select
4236 and indicates that a frame is trashed, the select may block
4237 displaying a trashed screen. */
4238 if (frame_garbaged
&& do_display
)
4240 clear_waiting_for_input ();
4241 redisplay_preserve_echo_area (11);
4242 if (XINT (read_kbd
) < 0)
4243 set_waiting_for_input (&timeout
);
4247 if (XINT (read_kbd
) && detect_input_pending ())
4255 Connecting
= connect_wait_mask
;
4256 nfds
= select (max (max_process_desc
, max_keyboard_desc
) + 1,
4258 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4259 (SELECT_TYPE
*)0, &timeout
);
4264 /* Make C-g and alarm signals set flags again */
4265 clear_waiting_for_input ();
4267 /* If we woke up due to SIGWINCH, actually change size now. */
4268 do_pending_window_change (0);
4270 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4271 /* We wanted the full specified time, so return now. */
4275 if (xerrno
== EINTR
)
4278 /* Ultrix select seems to return ENOMEM when it is
4279 interrupted. Treat it just like EINTR. Bleah. Note
4280 that we want to test for the "ultrix" CPP symbol, not
4281 "__ultrix__"; the latter is only defined under GCC, but
4282 not by DEC's bundled CC. -JimB */
4283 else if (xerrno
== ENOMEM
)
4287 /* This happens for no known reason on ALLIANT.
4288 I am guessing that this is the right response. -- RMS. */
4289 else if (xerrno
== EFAULT
)
4292 else if (xerrno
== EBADF
)
4295 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4296 the child's closure of the pts gives the parent a SIGHUP, and
4297 the ptc file descriptor is automatically closed,
4298 yielding EBADF here or at select() call above.
4299 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4300 in m/ibmrt-aix.h), and here we just ignore the select error.
4301 Cleanup occurs c/o status_notify after SIGCLD. */
4302 no_avail
= 1; /* Cannot depend on values returned */
4308 error ("select error: %s", emacs_strerror (xerrno
));
4313 FD_ZERO (&Available
);
4317 #if defined(sun) && !defined(USG5_4)
4318 if (nfds
> 0 && keyboard_bit_set (&Available
)
4320 /* System sometimes fails to deliver SIGIO.
4322 David J. Mackenzie says that Emacs doesn't compile under
4323 Solaris if this code is enabled, thus the USG5_4 in the CPP
4324 conditional. "I haven't noticed any ill effects so far.
4325 If you find a Solaris expert somewhere, they might know
4327 kill (getpid (), SIGIO
);
4330 #if 0 /* When polling is used, interrupt_input is 0,
4331 so get_input_pending should read the input.
4332 So this should not be needed. */
4333 /* If we are using polling for input,
4334 and we see input available, make it get read now.
4335 Otherwise it might not actually get read for a second.
4336 And on hpux, since we turn off polling in wait_reading_process_input,
4337 it might never get read at all if we don't spend much time
4338 outside of wait_reading_process_input. */
4339 if (XINT (read_kbd
) && interrupt_input
4340 && keyboard_bit_set (&Available
)
4341 && input_polling_used ())
4342 kill (getpid (), SIGALRM
);
4345 /* Check for keyboard input */
4346 /* If there is any, return immediately
4347 to give it higher priority than subprocesses */
4349 if (XINT (read_kbd
) != 0)
4351 int old_timers_run
= timers_run
;
4352 struct buffer
*old_buffer
= current_buffer
;
4355 if (detect_input_pending_run_timers (do_display
))
4357 swallow_events (do_display
);
4358 if (detect_input_pending_run_timers (do_display
))
4362 /* If a timer has run, this might have changed buffers
4363 an alike. Make read_key_sequence aware of that. */
4364 if (timers_run
!= old_timers_run
4365 && waiting_for_user_input_p
== -1
4366 && old_buffer
!= current_buffer
)
4367 record_asynch_buffer_change ();
4373 /* If there is unread keyboard input, also return. */
4374 if (XINT (read_kbd
) != 0
4375 && requeued_events_pending_p ())
4378 /* If we are not checking for keyboard input now,
4379 do process events (but don't run any timers).
4380 This is so that X events will be processed.
4381 Otherwise they may have to wait until polling takes place.
4382 That would causes delays in pasting selections, for example.
4384 (We used to do this only if wait_for_cell.) */
4385 if (XINT (read_kbd
) == 0 && detect_input_pending ())
4387 swallow_events (do_display
);
4388 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4389 if (detect_input_pending ())
4394 /* Exit now if the cell we're waiting for became non-nil. */
4395 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4399 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4400 go read it. This can happen with X on BSD after logging out.
4401 In that case, there really is no input and no SIGIO,
4402 but select says there is input. */
4404 if (XINT (read_kbd
) && interrupt_input
4405 && keyboard_bit_set (&Available
) && ! noninteractive
)
4406 kill (getpid (), SIGIO
);
4410 got_some_input
|= nfds
> 0;
4412 /* If checking input just got us a size-change event from X,
4413 obey it now if we should. */
4414 if (XINT (read_kbd
) || ! NILP (wait_for_cell
))
4415 do_pending_window_change (0);
4417 /* Check for data from a process. */
4418 if (no_avail
|| nfds
== 0)
4421 /* Really FIRST_PROC_DESC should be 0 on Unix,
4422 but this is safer in the short run. */
4423 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4425 if (FD_ISSET (channel
, &Available
)
4426 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4430 /* If waiting for this channel, arrange to return as
4431 soon as no more input to be processed. No more
4433 if (wait_channel
== channel
)
4439 proc
= chan_process
[channel
];
4443 /* If this is a server stream socket, accept connection. */
4444 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4446 server_accept_connection (proc
, channel
);
4450 /* Read data from the process, starting with our
4451 buffered-ahead character if we have one. */
4453 nread
= read_process_output (proc
, channel
);
4456 /* Since read_process_output can run a filter,
4457 which can call accept-process-output,
4458 don't try to read from any other processes
4459 before doing the select again. */
4460 FD_ZERO (&Available
);
4463 redisplay_preserve_echo_area (12);
4466 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4469 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4470 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4472 else if (nread
== -1 && errno
== EAGAIN
)
4476 else if (nread
== -1 && errno
== EAGAIN
)
4478 /* Note that we cannot distinguish between no input
4479 available now and a closed pipe.
4480 With luck, a closed pipe will be accompanied by
4481 subprocess termination and SIGCHLD. */
4482 else if (nread
== 0 && !NETCONN_P (proc
))
4484 #endif /* O_NDELAY */
4485 #endif /* O_NONBLOCK */
4487 /* On some OSs with ptys, when the process on one end of
4488 a pty exits, the other end gets an error reading with
4489 errno = EIO instead of getting an EOF (0 bytes read).
4490 Therefore, if we get an error reading and errno =
4491 EIO, just continue, because the child process has
4492 exited and should clean itself up soon (e.g. when we
4495 However, it has been known to happen that the SIGCHLD
4496 got lost. So raise the signl again just in case.
4498 else if (nread
== -1 && errno
== EIO
)
4499 kill (getpid (), SIGCHLD
);
4500 #endif /* HAVE_PTYS */
4501 /* If we can detect process termination, don't consider the process
4502 gone just because its pipe is closed. */
4504 else if (nread
== 0 && !NETCONN_P (proc
))
4509 /* Preserve status of processes already terminated. */
4510 XSETINT (XPROCESS (proc
)->tick
, ++process_tick
);
4511 deactivate_process (proc
);
4512 if (!NILP (XPROCESS (proc
)->raw_status_low
))
4513 update_status (XPROCESS (proc
));
4514 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4515 XPROCESS (proc
)->status
4516 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4519 #ifdef NON_BLOCKING_CONNECT
4520 if (check_connect
&& FD_ISSET (channel
, &Connecting
))
4522 struct Lisp_Process
*p
;
4524 FD_CLR (channel
, &connect_wait_mask
);
4525 if (--num_pending_connects
< 0)
4528 proc
= chan_process
[channel
];
4532 p
= XPROCESS (proc
);
4535 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4536 So only use it on systems where it is known to work. */
4538 int xlen
= sizeof(xerrno
);
4539 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4544 struct sockaddr pname
;
4545 int pnamelen
= sizeof(pname
);
4547 /* If connection failed, getpeername will fail. */
4549 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4551 /* Obtain connect failure code through error slippage. */
4554 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4561 XSETINT (p
->tick
, ++process_tick
);
4562 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4563 deactivate_process (proc
);
4568 /* Execute the sentinel here. If we had relied on
4569 status_notify to do it later, it will read input
4570 from the process before calling the sentinel. */
4571 exec_sentinel (proc
, build_string ("open\n"));
4572 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4574 FD_SET (XINT (p
->infd
), &input_wait_mask
);
4575 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
4579 #endif /* NON_BLOCKING_CONNECT */
4580 } /* end for each file descriptor */
4581 } /* end while exit conditions not met */
4583 waiting_for_user_input_p
= 0;
4585 /* If calling from keyboard input, do not quit
4586 since we want to return C-g as an input character.
4587 Otherwise, do pending quit if requested. */
4588 if (XINT (read_kbd
) >= 0)
4590 /* Prevent input_pending from remaining set if we quit. */
4591 clear_input_pending ();
4594 #ifdef POLL_INTERRUPTED_SYS_CALL
4595 /* AlainF 5-Jul-1996
4596 HP-UX 10.10 seems to have problems with signals coming in
4597 Causes "poll: interrupted system call" messages when Emacs is run
4599 Turn periodic alarms back on */
4601 #endif /* POLL_INTERRUPTED_SYS_CALL */
4603 return got_some_input
;
4606 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4609 read_process_output_call (fun_and_args
)
4610 Lisp_Object fun_and_args
;
4612 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4616 read_process_output_error_handler (error
)
4619 cmd_error_internal (error
, "error in process filter: ");
4621 update_echo_area ();
4622 Fsleep_for (make_number (2), Qnil
);
4626 /* Read pending output from the process channel,
4627 starting with our buffered-ahead character if we have one.
4628 Yield number of decoded characters read.
4630 This function reads at most 1024 characters.
4631 If you want to read all available subprocess output,
4632 you must call it repeatedly until it returns zero.
4634 The characters read are decoded according to PROC's coding-system
4638 read_process_output (proc
, channel
)
4640 register int channel
;
4642 register int nchars
, nbytes
;
4644 register Lisp_Object outstream
;
4645 register struct buffer
*old
= current_buffer
;
4646 register struct Lisp_Process
*p
= XPROCESS (proc
);
4647 register int opoint
;
4648 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4649 int carryover
= XINT (p
->decoding_carryover
);
4653 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
4655 vs
= get_vms_process_pointer (p
->pid
);
4659 return (0); /* Really weird if it does this */
4660 if (!(vs
->iosb
[0] & 1))
4661 return -1; /* I/O error */
4664 error ("Could not get VMS process pointer");
4665 chars
= vs
->inputBuffer
;
4666 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
4669 start_vms_process_read (vs
); /* Crank up the next read on the process */
4670 return 1; /* Nothing worth printing, say we got 1 */
4674 /* The data carried over in the previous decoding (which are at
4675 the tail of decoding buffer) should be prepended to the new
4676 data read to decode all together. */
4677 chars
= (char *) alloca (nbytes
+ carryover
);
4678 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
4679 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
4683 #ifdef DATAGRAM_SOCKETS
4684 /* A datagram is one packet; allow at least 1500+ bytes of data
4685 corresponding to the typical Ethernet frame size. */
4686 if (DATAGRAM_CHAN_P (channel
))
4688 /* carryover = 0; */ /* Does carryover make sense for datagrams? */
4693 chars
= (char *) alloca (carryover
+ readmax
);
4695 /* See the comment above. */
4696 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
4698 #ifdef DATAGRAM_SOCKETS
4699 /* We have a working select, so proc_buffered_char is always -1. */
4700 if (DATAGRAM_CHAN_P (channel
))
4702 int len
= datagram_address
[channel
].len
;
4703 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
- carryover
,
4704 0, datagram_address
[channel
].sa
, &len
);
4708 if (proc_buffered_char
[channel
] < 0)
4709 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
- carryover
);
4712 chars
[carryover
] = proc_buffered_char
[channel
];
4713 proc_buffered_char
[channel
] = -1;
4714 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1 - carryover
);
4718 nbytes
= nbytes
+ 1;
4720 #endif /* not VMS */
4722 XSETINT (p
->decoding_carryover
, 0);
4724 /* At this point, NBYTES holds number of bytes just received
4725 (including the one in proc_buffered_char[channel]). */
4728 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
4730 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
4733 /* Now set NBYTES how many bytes we must decode. */
4734 nbytes
+= carryover
;
4736 /* Read and dispose of the process output. */
4737 outstream
= p
->filter
;
4738 if (!NILP (outstream
))
4740 /* We inhibit quit here instead of just catching it so that
4741 hitting ^G when a filter happens to be running won't screw
4743 int count
= SPECPDL_INDEX ();
4744 Lisp_Object odeactivate
;
4745 Lisp_Object obuffer
, okeymap
;
4747 int outer_running_asynch_code
= running_asynch_code
;
4748 int waiting
= waiting_for_user_input_p
;
4750 /* No need to gcpro these, because all we do with them later
4751 is test them for EQness, and none of them should be a string. */
4752 odeactivate
= Vdeactivate_mark
;
4753 XSETBUFFER (obuffer
, current_buffer
);
4754 okeymap
= current_buffer
->keymap
;
4756 specbind (Qinhibit_quit
, Qt
);
4757 specbind (Qlast_nonmenu_event
, Qt
);
4759 /* In case we get recursively called,
4760 and we already saved the match data nonrecursively,
4761 save the same match data in safely recursive fashion. */
4762 if (outer_running_asynch_code
)
4765 /* Don't clobber the CURRENT match data, either! */
4766 tem
= Fmatch_data (Qnil
, Qnil
);
4767 restore_match_data ();
4768 record_unwind_protect (Fset_match_data
, Fmatch_data (Qnil
, Qnil
));
4769 Fset_match_data (tem
);
4772 /* For speed, if a search happens within this code,
4773 save the match data in a special nonrecursive fashion. */
4774 running_asynch_code
= 1;
4776 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
4778 Vlast_coding_system_used
= coding
->symbol
;
4779 /* A new coding system might be found. */
4780 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
4782 p
->decode_coding_system
= coding
->symbol
;
4784 /* Don't call setup_coding_system for
4785 proc_decode_coding_system[channel] here. It is done in
4786 detect_coding called via decode_coding above. */
4788 /* If a coding system for encoding is not yet decided, we set
4789 it as the same as coding-system for decoding.
4791 But, before doing that we must check if
4792 proc_encode_coding_system[p->outfd] surely points to a
4793 valid memory because p->outfd will be changed once EOF is
4794 sent to the process. */
4795 if (NILP (p
->encode_coding_system
)
4796 && proc_encode_coding_system
[XINT (p
->outfd
)])
4798 p
->encode_coding_system
= coding
->symbol
;
4799 setup_coding_system (coding
->symbol
,
4800 proc_encode_coding_system
[XINT (p
->outfd
)]);
4804 carryover
= nbytes
- coding
->consumed
;
4805 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
4807 XSETINT (p
->decoding_carryover
, carryover
);
4808 /* Adjust the multibyteness of TEXT to that of the filter. */
4809 if (NILP (p
->filter_multibyte
) != ! STRING_MULTIBYTE (text
))
4810 text
= (STRING_MULTIBYTE (text
)
4811 ? Fstring_as_unibyte (text
)
4812 : Fstring_to_multibyte (text
));
4813 if (SBYTES (text
) > 0)
4814 internal_condition_case_1 (read_process_output_call
,
4816 Fcons (proc
, Fcons (text
, Qnil
))),
4817 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
4818 read_process_output_error_handler
);
4820 /* If we saved the match data nonrecursively, restore it now. */
4821 restore_match_data ();
4822 running_asynch_code
= outer_running_asynch_code
;
4824 /* Handling the process output should not deactivate the mark. */
4825 Vdeactivate_mark
= odeactivate
;
4827 /* Restore waiting_for_user_input_p as it was
4828 when we were called, in case the filter clobbered it. */
4829 waiting_for_user_input_p
= waiting
;
4831 #if 0 /* Call record_asynch_buffer_change unconditionally,
4832 because we might have changed minor modes or other things
4833 that affect key bindings. */
4834 if (! EQ (Fcurrent_buffer (), obuffer
)
4835 || ! EQ (current_buffer
->keymap
, okeymap
))
4837 /* But do it only if the caller is actually going to read events.
4838 Otherwise there's no need to make him wake up, and it could
4839 cause trouble (for example it would make Fsit_for return). */
4840 if (waiting_for_user_input_p
== -1)
4841 record_asynch_buffer_change ();
4844 start_vms_process_read (vs
);
4846 unbind_to (count
, Qnil
);
4850 /* If no filter, write into buffer if it isn't dead. */
4851 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
4853 Lisp_Object old_read_only
;
4854 int old_begv
, old_zv
;
4855 int old_begv_byte
, old_zv_byte
;
4856 Lisp_Object odeactivate
;
4857 int before
, before_byte
;
4862 odeactivate
= Vdeactivate_mark
;
4864 Fset_buffer (p
->buffer
);
4866 opoint_byte
= PT_BYTE
;
4867 old_read_only
= current_buffer
->read_only
;
4870 old_begv_byte
= BEGV_BYTE
;
4871 old_zv_byte
= ZV_BYTE
;
4873 current_buffer
->read_only
= Qnil
;
4875 /* Insert new output into buffer
4876 at the current end-of-output marker,
4877 thus preserving logical ordering of input and output. */
4878 if (XMARKER (p
->mark
)->buffer
)
4879 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
4880 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
4883 SET_PT_BOTH (ZV
, ZV_BYTE
);
4885 before_byte
= PT_BYTE
;
4887 /* If the output marker is outside of the visible region, save
4888 the restriction and widen. */
4889 if (! (BEGV
<= PT
&& PT
<= ZV
))
4892 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
4894 Vlast_coding_system_used
= coding
->symbol
;
4895 /* A new coding system might be found. See the comment in the
4896 similar code in the previous `if' block. */
4897 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
4899 p
->decode_coding_system
= coding
->symbol
;
4900 if (NILP (p
->encode_coding_system
)
4901 && proc_encode_coding_system
[XINT (p
->outfd
)])
4903 p
->encode_coding_system
= coding
->symbol
;
4904 setup_coding_system (coding
->symbol
,
4905 proc_encode_coding_system
[XINT (p
->outfd
)]);
4908 carryover
= nbytes
- coding
->consumed
;
4909 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
4911 XSETINT (p
->decoding_carryover
, carryover
);
4912 /* Adjust the multibyteness of TEXT to that of the buffer. */
4913 if (NILP (current_buffer
->enable_multibyte_characters
)
4914 != ! STRING_MULTIBYTE (text
))
4915 text
= (STRING_MULTIBYTE (text
)
4916 ? Fstring_as_unibyte (text
)
4917 : Fstring_to_multibyte (text
));
4918 /* Insert before markers in case we are inserting where
4919 the buffer's mark is, and the user's next command is Meta-y. */
4920 insert_from_string_before_markers (text
, 0, 0,
4921 SCHARS (text
), SBYTES (text
), 0);
4923 /* Make sure the process marker's position is valid when the
4924 process buffer is changed in the signal_after_change above.
4925 W3 is known to do that. */
4926 if (BUFFERP (p
->buffer
)
4927 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
4928 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
4930 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
4932 update_mode_lines
++;
4934 /* Make sure opoint and the old restrictions
4935 float ahead of any new text just as point would. */
4936 if (opoint
>= before
)
4938 opoint
+= PT
- before
;
4939 opoint_byte
+= PT_BYTE
- before_byte
;
4941 if (old_begv
> before
)
4943 old_begv
+= PT
- before
;
4944 old_begv_byte
+= PT_BYTE
- before_byte
;
4946 if (old_zv
>= before
)
4948 old_zv
+= PT
- before
;
4949 old_zv_byte
+= PT_BYTE
- before_byte
;
4952 /* If the restriction isn't what it should be, set it. */
4953 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
4954 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
4956 /* Handling the process output should not deactivate the mark. */
4957 Vdeactivate_mark
= odeactivate
;
4959 current_buffer
->read_only
= old_read_only
;
4960 SET_PT_BOTH (opoint
, opoint_byte
);
4961 set_buffer_internal (old
);
4964 start_vms_process_read (vs
);
4969 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
4971 doc
: /* Returns non-nil if emacs is waiting for input from the user.
4972 This is intended for use by asynchronous process output filters and sentinels. */)
4975 return (waiting_for_user_input_p
? Qt
: Qnil
);
4978 /* Sending data to subprocess */
4980 jmp_buf send_process_frame
;
4981 Lisp_Object process_sent_to
;
4984 send_process_trap ()
4990 longjmp (send_process_frame
, 1);
4993 /* Send some data to process PROC.
4994 BUF is the beginning of the data; LEN is the number of characters.
4995 OBJECT is the Lisp object that the data comes from. If OBJECT is
4996 nil or t, it means that the data comes from C string.
4998 If OBJECT is not nil, the data is encoded by PROC's coding-system
4999 for encoding before it is sent.
5001 This function can evaluate Lisp code and can garbage collect. */
5004 send_process (proc
, buf
, len
, object
)
5005 volatile Lisp_Object proc
;
5006 unsigned char *volatile buf
;
5008 volatile Lisp_Object object
;
5010 /* Use volatile to protect variables from being clobbered by longjmp. */
5012 struct coding_system
*coding
;
5013 struct gcpro gcpro1
;
5018 struct Lisp_Process
*p
= XPROCESS (proc
);
5019 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5022 if (! NILP (XPROCESS (proc
)->raw_status_low
))
5023 update_status (XPROCESS (proc
));
5024 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
5025 error ("Process %s not running",
5026 SDATA (XPROCESS (proc
)->name
));
5027 if (XINT (XPROCESS (proc
)->outfd
) < 0)
5028 error ("Output file descriptor of %s is closed",
5029 SDATA (XPROCESS (proc
)->name
));
5031 coding
= proc_encode_coding_system
[XINT (XPROCESS (proc
)->outfd
)];
5032 Vlast_coding_system_used
= coding
->symbol
;
5034 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5035 || (BUFFERP (object
)
5036 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5039 if (!EQ (coding
->symbol
, XPROCESS (proc
)->encode_coding_system
))
5040 /* The coding system for encoding was changed to raw-text
5041 because we sent a unibyte text previously. Now we are
5042 sending a multibyte text, thus we must encode it by the
5043 original coding system specified for the current
5045 setup_coding_system (XPROCESS (proc
)->encode_coding_system
, coding
);
5046 /* src_multibyte should be set to 1 _after_ a call to
5047 setup_coding_system, since it resets src_multibyte to
5049 coding
->src_multibyte
= 1;
5053 /* For sending a unibyte text, character code conversion should
5054 not take place but EOL conversion should. So, setup raw-text
5055 or one of the subsidiary if we have not yet done it. */
5056 if (coding
->type
!= coding_type_raw_text
)
5058 if (CODING_REQUIRE_FLUSHING (coding
))
5060 /* But, before changing the coding, we must flush out data. */
5061 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5062 send_process (proc
, "", 0, Qt
);
5064 coding
->src_multibyte
= 0;
5065 setup_raw_text_coding_system (coding
);
5068 coding
->dst_multibyte
= 0;
5070 if (CODING_REQUIRE_ENCODING (coding
))
5072 int require
= encoding_buffer_size (coding
, len
);
5073 int from_byte
= -1, from
= -1, to
= -1;
5074 unsigned char *temp_buf
= NULL
;
5076 if (BUFFERP (object
))
5078 from_byte
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5079 from
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
);
5080 to
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
+ len
);
5082 else if (STRINGP (object
))
5084 from_byte
= buf
- SDATA (object
);
5085 from
= string_byte_to_char (object
, from_byte
);
5086 to
= string_byte_to_char (object
, from_byte
+ len
);
5089 if (coding
->composing
!= COMPOSITION_DISABLED
)
5092 coding_save_composition (coding
, from
, to
, object
);
5094 coding
->composing
= COMPOSITION_DISABLED
;
5097 if (SBYTES (XPROCESS (proc
)->encoding_buf
) < require
)
5098 XPROCESS (proc
)->encoding_buf
= make_uninit_string (require
);
5101 buf
= (BUFFERP (object
)
5102 ? BUF_BYTE_ADDRESS (XBUFFER (object
), from_byte
)
5103 : SDATA (object
) + from_byte
);
5105 object
= XPROCESS (proc
)->encoding_buf
;
5106 encode_coding (coding
, (char *) buf
, SDATA (object
),
5107 len
, SBYTES (object
));
5108 len
= coding
->produced
;
5109 buf
= SDATA (object
);
5115 vs
= get_vms_process_pointer (p
->pid
);
5117 error ("Could not find this process: %x", p
->pid
);
5118 else if (write_to_vms_process (vs
, buf
, len
))
5122 if (pty_max_bytes
== 0)
5124 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5125 pty_max_bytes
= fpathconf (XFASTINT (XPROCESS (proc
)->outfd
),
5127 if (pty_max_bytes
< 0)
5128 pty_max_bytes
= 250;
5130 pty_max_bytes
= 250;
5132 /* Deduct one, to leave space for the eof. */
5136 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5137 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5138 when returning with longjmp despite being declared volatile. */
5139 if (!setjmp (send_process_frame
))
5141 process_sent_to
= proc
;
5145 SIGTYPE (*old_sigpipe
)();
5147 /* Decide how much data we can send in one batch.
5148 Long lines need to be split into multiple batches. */
5149 if (!NILP (XPROCESS (proc
)->pty_flag
))
5151 /* Starting this at zero is always correct when not the first
5152 iteration because the previous iteration ended by sending C-d.
5153 It may not be correct for the first iteration
5154 if a partial line was sent in a separate send_process call.
5155 If that proves worth handling, we need to save linepos
5156 in the process object. */
5158 unsigned char *ptr
= (unsigned char *) buf
;
5159 unsigned char *end
= (unsigned char *) buf
+ len
;
5161 /* Scan through this text for a line that is too long. */
5162 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5170 /* If we found one, break the line there
5171 and put in a C-d to force the buffer through. */
5175 /* Send this batch, using one or more write calls. */
5178 int outfd
= XINT (XPROCESS (proc
)->outfd
);
5179 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5180 #ifdef DATAGRAM_SOCKETS
5181 if (DATAGRAM_CHAN_P (outfd
))
5183 rv
= sendto (outfd
, (char *) buf
, this,
5184 0, datagram_address
[outfd
].sa
,
5185 datagram_address
[outfd
].len
);
5186 if (rv
< 0 && errno
== EMSGSIZE
)
5187 report_file_error ("sending datagram", Fcons (proc
, Qnil
));
5191 rv
= emacs_write (outfd
, (char *) buf
, this);
5192 signal (SIGPIPE
, old_sigpipe
);
5198 || errno
== EWOULDBLOCK
5204 /* Buffer is full. Wait, accepting input;
5205 that may allow the program
5206 to finish doing output and read more. */
5211 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5212 /* A gross hack to work around a bug in FreeBSD.
5213 In the following sequence, read(2) returns
5217 write(2) 954 bytes, get EAGAIN
5218 read(2) 1024 bytes in process_read_output
5219 read(2) 11 bytes in process_read_output
5221 That is, read(2) returns more bytes than have
5222 ever been written successfully. The 1033 bytes
5223 read are the 1022 bytes written successfully
5224 after processing (for example with CRs added if
5225 the terminal is set up that way which it is
5226 here). The same bytes will be seen again in a
5227 later read(2), without the CRs. */
5229 if (errno
== EAGAIN
)
5232 ioctl (XINT (XPROCESS (proc
)->outfd
), TIOCFLUSH
,
5235 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5237 /* Running filters might relocate buffers or strings.
5238 Arrange to relocate BUF. */
5239 if (BUFFERP (object
))
5240 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5241 else if (STRINGP (object
))
5242 offset
= buf
- SDATA (object
);
5244 XSETFASTINT (zero
, 0);
5245 #ifdef EMACS_HAS_USECS
5246 wait_reading_process_input (0, 20000, zero
, 0);
5248 wait_reading_process_input (1, 0, zero
, 0);
5251 if (BUFFERP (object
))
5252 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5253 else if (STRINGP (object
))
5254 buf
= offset
+ SDATA (object
);
5259 /* This is a real error. */
5260 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5267 /* If we sent just part of the string, put in an EOF
5268 to force it through, before we send the rest. */
5270 Fprocess_send_eof (proc
);
5273 #endif /* not VMS */
5277 proc
= process_sent_to
;
5279 XPROCESS (proc
)->raw_status_low
= Qnil
;
5280 XPROCESS (proc
)->raw_status_high
= Qnil
;
5281 XPROCESS (proc
)->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5282 XSETINT (XPROCESS (proc
)->tick
, ++process_tick
);
5283 deactivate_process (proc
);
5285 error ("Error writing to process %s; closed it",
5286 SDATA (XPROCESS (proc
)->name
));
5288 error ("SIGPIPE raised on process %s; closed it",
5289 SDATA (XPROCESS (proc
)->name
));
5296 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5298 doc
: /* Send current contents of region as input to PROCESS.
5299 PROCESS may be a process, a buffer, the name of a process or buffer, or
5300 nil, indicating the current buffer's process.
5301 Called from program, takes three arguments, PROCESS, START and END.
5302 If the region is more than 500 characters long,
5303 it is sent in several bunches. This may happen even for shorter regions.
5304 Output from processes can arrive in between bunches. */)
5305 (process
, start
, end
)
5306 Lisp_Object process
, start
, end
;
5311 proc
= get_process (process
);
5312 validate_region (&start
, &end
);
5314 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5315 move_gap (XINT (start
));
5317 start1
= CHAR_TO_BYTE (XINT (start
));
5318 end1
= CHAR_TO_BYTE (XINT (end
));
5319 send_process (proc
, BYTE_POS_ADDR (start1
), end1
- start1
,
5320 Fcurrent_buffer ());
5325 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5327 doc
: /* Send PROCESS the contents of STRING as input.
5328 PROCESS may be a process, a buffer, the name of a process or buffer, or
5329 nil, indicating the current buffer's process.
5330 If STRING is more than 500 characters long,
5331 it is sent in several bunches. This may happen even for shorter strings.
5332 Output from processes can arrive in between bunches. */)
5334 Lisp_Object process
, string
;
5337 CHECK_STRING (string
);
5338 proc
= get_process (process
);
5339 send_process (proc
, SDATA (string
),
5340 SBYTES (string
), string
);
5344 /* Return the foreground process group for the tty/pty that
5345 the process P uses. */
5347 emacs_get_tty_pgrp (p
)
5348 struct Lisp_Process
*p
;
5353 if (ioctl (XINT (p
->infd
), TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5356 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5357 master side. Try the slave side. */
5358 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5362 ioctl (fd
, TIOCGPGRP
, &gid
);
5366 #endif /* defined (TIOCGPGRP ) */
5371 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5372 Sprocess_running_child_p
, 0, 1, 0,
5373 doc
: /* Return t if PROCESS has given the terminal to a child.
5374 If the operating system does not make it possible to find out,
5375 return t unconditionally. */)
5377 Lisp_Object process
;
5379 /* Initialize in case ioctl doesn't exist or gives an error,
5380 in a way that will cause returning t. */
5383 struct Lisp_Process
*p
;
5385 proc
= get_process (process
);
5386 p
= XPROCESS (proc
);
5388 if (!EQ (p
->childp
, Qt
))
5389 error ("Process %s is not a subprocess",
5391 if (XINT (p
->infd
) < 0)
5392 error ("Process %s is not active",
5395 gid
= emacs_get_tty_pgrp (p
);
5397 if (gid
== XFASTINT (p
->pid
))
5402 /* send a signal number SIGNO to PROCESS.
5403 If CURRENT_GROUP is t, that means send to the process group
5404 that currently owns the terminal being used to communicate with PROCESS.
5405 This is used for various commands in shell mode.
5406 If CURRENT_GROUP is lambda, that means send to the process group
5407 that currently owns the terminal, but only if it is NOT the shell itself.
5409 If NOMSG is zero, insert signal-announcements into process's buffers
5412 If we can, we try to signal PROCESS by sending control characters
5413 down the pty. This allows us to signal inferiors who have changed
5414 their uid, for which killpg would return an EPERM error. */
5417 process_send_signal (process
, signo
, current_group
, nomsg
)
5418 Lisp_Object process
;
5420 Lisp_Object current_group
;
5424 register struct Lisp_Process
*p
;
5428 proc
= get_process (process
);
5429 p
= XPROCESS (proc
);
5431 if (!EQ (p
->childp
, Qt
))
5432 error ("Process %s is not a subprocess",
5434 if (XINT (p
->infd
) < 0)
5435 error ("Process %s is not active",
5438 if (NILP (p
->pty_flag
))
5439 current_group
= Qnil
;
5441 /* If we are using pgrps, get a pgrp number and make it negative. */
5442 if (NILP (current_group
))
5443 /* Send the signal to the shell's process group. */
5444 gid
= XFASTINT (p
->pid
);
5447 #ifdef SIGNALS_VIA_CHARACTERS
5448 /* If possible, send signals to the entire pgrp
5449 by sending an input character to it. */
5451 /* TERMIOS is the latest and bestest, and seems most likely to
5452 work. If the system has it, use it. */
5459 tcgetattr (XINT (p
->infd
), &t
);
5460 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5464 tcgetattr (XINT (p
->infd
), &t
);
5465 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5469 tcgetattr (XINT (p
->infd
), &t
);
5470 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5471 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5473 send_process (proc
, &t
.c_cc
[VSUSP
], 1, Qnil
);
5478 #else /* ! HAVE_TERMIOS */
5480 /* On Berkeley descendants, the following IOCTL's retrieve the
5481 current control characters. */
5482 #if defined (TIOCGLTC) && defined (TIOCGETC)
5490 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5491 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5494 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5495 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5499 ioctl (XINT (p
->infd
), TIOCGLTC
, &lc
);
5500 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5502 #endif /* ! defined (SIGTSTP) */
5505 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5507 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5514 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5515 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5518 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5519 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5523 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5524 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5526 #endif /* ! defined (SIGTSTP) */
5528 #else /* ! defined (TCGETA) */
5529 Your configuration files are messed up
.
5530 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
5531 you'd better be using one of the alternatives above! */
5532 #endif /* ! defined (TCGETA) */
5533 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5534 #endif /* ! defined HAVE_TERMIOS */
5536 /* The code above always returns from the function. */
5537 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5540 /* Get the current pgrp using the tty itself, if we have that.
5541 Otherwise, use the pty to get the pgrp.
5542 On pfa systems, saka@pfu.fujitsu.co.JP writes:
5543 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
5544 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
5545 His patch indicates that if TIOCGPGRP returns an error, then
5546 we should just assume that p->pid is also the process group id. */
5548 gid
= emacs_get_tty_pgrp (p
);
5551 /* If we can't get the information, assume
5552 the shell owns the tty. */
5553 gid
= XFASTINT (p
->pid
);
5555 /* It is not clear whether anything really can set GID to -1.
5556 Perhaps on some system one of those ioctls can or could do so.
5557 Or perhaps this is vestigial. */
5560 #else /* ! defined (TIOCGPGRP ) */
5561 /* Can't select pgrps on this system, so we know that
5562 the child itself heads the pgrp. */
5563 gid
= XFASTINT (p
->pid
);
5564 #endif /* ! defined (TIOCGPGRP ) */
5566 /* If current_group is lambda, and the shell owns the terminal,
5567 don't send any signal. */
5568 if (EQ (current_group
, Qlambda
) && gid
== XFASTINT (p
->pid
))
5576 p
->raw_status_low
= Qnil
;
5577 p
->raw_status_high
= Qnil
;
5579 XSETINT (p
->tick
, ++process_tick
);
5583 #endif /* ! defined (SIGCONT) */
5586 send_process (proc
, "\003", 1, Qnil
); /* ^C */
5591 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
5596 sys$
forcex (&(XFASTINT (p
->pid
)), 0, 1);
5599 flush_pending_output (XINT (p
->infd
));
5603 /* If we don't have process groups, send the signal to the immediate
5604 subprocess. That isn't really right, but it's better than any
5605 obvious alternative. */
5608 kill (XFASTINT (p
->pid
), signo
);
5612 /* gid may be a pid, or minus a pgrp's number */
5614 if (!NILP (current_group
))
5616 if (ioctl (XINT (p
->infd
), TIOCSIGSEND
, signo
) == -1)
5617 EMACS_KILLPG (gid
, signo
);
5621 gid
= - XFASTINT (p
->pid
);
5624 #else /* ! defined (TIOCSIGSEND) */
5625 EMACS_KILLPG (gid
, signo
);
5626 #endif /* ! defined (TIOCSIGSEND) */
5629 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
5630 doc
: /* Interrupt process PROCESS.
5631 PROCESS may be a process, a buffer, or the name of a process or buffer.
5632 nil or no arg means current buffer's process.
5633 Second arg CURRENT-GROUP non-nil means send signal to
5634 the current process-group of the process's controlling terminal
5635 rather than to the process's own process group.
5636 If the process is a shell, this means interrupt current subjob
5637 rather than the shell.
5639 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
5640 don't send the signal. */)
5641 (process
, current_group
)
5642 Lisp_Object process
, current_group
;
5644 process_send_signal (process
, SIGINT
, current_group
, 0);
5648 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
5649 doc
: /* Kill process PROCESS. May be process or name of one.
5650 See function `interrupt-process' for more details on usage. */)
5651 (process
, current_group
)
5652 Lisp_Object process
, current_group
;
5654 process_send_signal (process
, SIGKILL
, current_group
, 0);
5658 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
5659 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
5660 See function `interrupt-process' for more details on usage. */)
5661 (process
, current_group
)
5662 Lisp_Object process
, current_group
;
5664 process_send_signal (process
, SIGQUIT
, current_group
, 0);
5668 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
5669 doc
: /* Stop process PROCESS. May be process or name of one.
5670 See function `interrupt-process' for more details on usage.
5671 If PROCESS is a network process, inhibit handling of incoming traffic. */)
5672 (process
, current_group
)
5673 Lisp_Object process
, current_group
;
5676 if (PROCESSP (process
) && NETCONN_P (process
))
5678 struct Lisp_Process
*p
;
5680 p
= XPROCESS (process
);
5681 if (NILP (p
->command
)
5682 && XINT (p
->infd
) >= 0)
5684 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
5685 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
5692 error ("no SIGTSTP support");
5694 process_send_signal (process
, SIGTSTP
, current_group
, 0);
5699 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
5700 doc
: /* Continue process PROCESS. May be process or name of one.
5701 See function `interrupt-process' for more details on usage.
5702 If PROCESS is a network process, resume handling of incoming traffic. */)
5703 (process
, current_group
)
5704 Lisp_Object process
, current_group
;
5707 if (PROCESSP (process
) && NETCONN_P (process
))
5709 struct Lisp_Process
*p
;
5711 p
= XPROCESS (process
);
5712 if (EQ (p
->command
, Qt
)
5713 && XINT (p
->infd
) >= 0
5714 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
5716 FD_SET (XINT (p
->infd
), &input_wait_mask
);
5717 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
5724 process_send_signal (process
, SIGCONT
, current_group
, 0);
5726 error ("no SIGCONT support");
5731 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
5732 2, 2, "sProcess (name or number): \nnSignal code: ",
5733 doc
: /* Send PROCESS the signal with code SIGCODE.
5734 PROCESS may also be an integer specifying the process id of the
5735 process to signal; in this case, the process need not be a child of
5737 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
5739 Lisp_Object process
, sigcode
;
5743 if (INTEGERP (process
))
5749 if (STRINGP (process
))
5752 if (tem
= Fget_process (process
), NILP (tem
))
5754 pid
= Fstring_to_number (process
, make_number (10));
5755 if (XINT (pid
) != 0)
5761 process
= get_process (process
);
5766 CHECK_PROCESS (process
);
5767 pid
= XPROCESS (process
)->pid
;
5768 if (!INTEGERP (pid
) || XINT (pid
) <= 0)
5769 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
5773 #define handle_signal(NAME, VALUE) \
5774 else if (!strcmp (name, NAME)) \
5775 XSETINT (sigcode, VALUE)
5777 if (INTEGERP (sigcode
))
5781 unsigned char *name
;
5783 CHECK_SYMBOL (sigcode
);
5784 name
= SDATA (SYMBOL_NAME (sigcode
));
5789 handle_signal ("SIGHUP", SIGHUP
);
5792 handle_signal ("SIGINT", SIGINT
);
5795 handle_signal ("SIGQUIT", SIGQUIT
);
5798 handle_signal ("SIGILL", SIGILL
);
5801 handle_signal ("SIGABRT", SIGABRT
);
5804 handle_signal ("SIGEMT", SIGEMT
);
5807 handle_signal ("SIGKILL", SIGKILL
);
5810 handle_signal ("SIGFPE", SIGFPE
);
5813 handle_signal ("SIGBUS", SIGBUS
);
5816 handle_signal ("SIGSEGV", SIGSEGV
);
5819 handle_signal ("SIGSYS", SIGSYS
);
5822 handle_signal ("SIGPIPE", SIGPIPE
);
5825 handle_signal ("SIGALRM", SIGALRM
);
5828 handle_signal ("SIGTERM", SIGTERM
);
5831 handle_signal ("SIGURG", SIGURG
);
5834 handle_signal ("SIGSTOP", SIGSTOP
);
5837 handle_signal ("SIGTSTP", SIGTSTP
);
5840 handle_signal ("SIGCONT", SIGCONT
);
5843 handle_signal ("SIGCHLD", SIGCHLD
);
5846 handle_signal ("SIGTTIN", SIGTTIN
);
5849 handle_signal ("SIGTTOU", SIGTTOU
);
5852 handle_signal ("SIGIO", SIGIO
);
5855 handle_signal ("SIGXCPU", SIGXCPU
);
5858 handle_signal ("SIGXFSZ", SIGXFSZ
);
5861 handle_signal ("SIGVTALRM", SIGVTALRM
);
5864 handle_signal ("SIGPROF", SIGPROF
);
5867 handle_signal ("SIGWINCH", SIGWINCH
);
5870 handle_signal ("SIGINFO", SIGINFO
);
5873 handle_signal ("SIGUSR1", SIGUSR1
);
5876 handle_signal ("SIGUSR2", SIGUSR2
);
5879 error ("Undefined signal name %s", name
);
5882 #undef handle_signal
5884 return make_number (kill (XINT (pid
), XINT (sigcode
)));
5887 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
5888 doc
: /* Make PROCESS see end-of-file in its input.
5889 EOF comes after any text already sent to it.
5890 PROCESS may be a process, a buffer, the name of a process or buffer, or
5891 nil, indicating the current buffer's process.
5892 If PROCESS is a network connection, or is a process communicating
5893 through a pipe (as opposed to a pty), then you cannot send any more
5894 text to PROCESS after you call this function. */)
5896 Lisp_Object process
;
5899 struct coding_system
*coding
;
5901 if (DATAGRAM_CONN_P (process
))
5904 proc
= get_process (process
);
5905 coding
= proc_encode_coding_system
[XINT (XPROCESS (proc
)->outfd
)];
5907 /* Make sure the process is really alive. */
5908 if (! NILP (XPROCESS (proc
)->raw_status_low
))
5909 update_status (XPROCESS (proc
));
5910 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
5911 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
5913 if (CODING_REQUIRE_FLUSHING (coding
))
5915 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5916 send_process (proc
, "", 0, Qnil
);
5920 send_process (proc
, "\032", 1, Qnil
); /* ^z */
5922 if (!NILP (XPROCESS (proc
)->pty_flag
))
5923 send_process (proc
, "\004", 1, Qnil
);
5926 int old_outfd
, new_outfd
;
5928 #ifdef HAVE_SHUTDOWN
5929 /* If this is a network connection, or socketpair is used
5930 for communication with the subprocess, call shutdown to cause EOF.
5931 (In some old system, shutdown to socketpair doesn't work.
5932 Then we just can't win.) */
5933 if (NILP (XPROCESS (proc
)->pid
)
5934 || XINT (XPROCESS (proc
)->outfd
) == XINT (XPROCESS (proc
)->infd
))
5935 shutdown (XINT (XPROCESS (proc
)->outfd
), 1);
5936 /* In case of socketpair, outfd == infd, so don't close it. */
5937 if (XINT (XPROCESS (proc
)->outfd
) != XINT (XPROCESS (proc
)->infd
))
5938 emacs_close (XINT (XPROCESS (proc
)->outfd
));
5939 #else /* not HAVE_SHUTDOWN */
5940 emacs_close (XINT (XPROCESS (proc
)->outfd
));
5941 #endif /* not HAVE_SHUTDOWN */
5942 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
5943 old_outfd
= XINT (XPROCESS (proc
)->outfd
);
5945 if (!proc_encode_coding_system
[new_outfd
])
5946 proc_encode_coding_system
[new_outfd
]
5947 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
5948 bcopy (proc_encode_coding_system
[old_outfd
],
5949 proc_encode_coding_system
[new_outfd
],
5950 sizeof (struct coding_system
));
5951 bzero (proc_encode_coding_system
[old_outfd
],
5952 sizeof (struct coding_system
));
5954 XSETINT (XPROCESS (proc
)->outfd
, new_outfd
);
5960 /* Kill all processes associated with `buffer'.
5961 If `buffer' is nil, kill all processes */
5964 kill_buffer_processes (buffer
)
5967 Lisp_Object tail
, proc
;
5969 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
5971 proc
= XCDR (XCAR (tail
));
5972 if (GC_PROCESSP (proc
)
5973 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
5975 if (NETCONN_P (proc
))
5976 Fdelete_process (proc
);
5977 else if (XINT (XPROCESS (proc
)->infd
) >= 0)
5978 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
5983 /* On receipt of a signal that a child status has changed, loop asking
5984 about children with changed statuses until the system says there
5987 All we do is change the status; we do not run sentinels or print
5988 notifications. That is saved for the next time keyboard input is
5989 done, in order to avoid timing errors.
5991 ** WARNING: this can be called during garbage collection.
5992 Therefore, it must not be fooled by the presence of mark bits in
5995 ** USG WARNING: Although it is not obvious from the documentation
5996 in signal(2), on a USG system the SIGCLD handler MUST NOT call
5997 signal() before executing at least one wait(), otherwise the
5998 handler will be called again, resulting in an infinite loop. The
5999 relevant portion of the documentation reads "SIGCLD signals will be
6000 queued and the signal-catching function will be continually
6001 reentered until the queue is empty". Invoking signal() causes the
6002 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6006 sigchld_handler (signo
)
6009 int old_errno
= errno
;
6011 register struct Lisp_Process
*p
;
6012 extern EMACS_TIME
*input_available_clear_time
;
6016 sigheld
|= sigbit (SIGCHLD
);
6028 #endif /* no WUNTRACED */
6029 /* Keep trying to get a status until we get a definitive result. */
6033 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6035 while (pid
< 0 && errno
== EINTR
);
6039 /* PID == 0 means no processes found, PID == -1 means a real
6040 failure. We have done all our job, so return. */
6042 /* USG systems forget handlers when they are used;
6043 must reestablish each time */
6044 #if defined (USG) && !defined (POSIX_SIGNALS)
6045 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6048 sigheld
&= ~sigbit (SIGCHLD
);
6056 #endif /* no WNOHANG */
6058 /* Find the process that signaled us, and record its status. */
6061 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6063 proc
= XCDR (XCAR (tail
));
6064 p
= XPROCESS (proc
);
6065 if (GC_EQ (p
->childp
, Qt
) && XINT (p
->pid
) == pid
)
6070 /* Look for an asynchronous process whose pid hasn't been filled
6073 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6075 proc
= XCDR (XCAR (tail
));
6076 p
= XPROCESS (proc
);
6077 if (GC_INTEGERP (p
->pid
) && XINT (p
->pid
) == -1)
6082 /* Change the status of the process that was found. */
6085 union { int i
; WAITTYPE wt
; } u
;
6086 int clear_desc_flag
= 0;
6088 XSETINT (p
->tick
, ++process_tick
);
6090 XSETINT (p
->raw_status_low
, u
.i
& 0xffff);
6091 XSETINT (p
->raw_status_high
, u
.i
>> 16);
6093 /* If process has terminated, stop waiting for its output. */
6094 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6095 && XINT (p
->infd
) >= 0)
6096 clear_desc_flag
= 1;
6098 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6099 if (clear_desc_flag
)
6101 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6102 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6105 /* Tell wait_reading_process_input that it needs to wake up and
6107 if (input_available_clear_time
)
6108 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6111 /* There was no asynchronous process found for that id. Check
6112 if we have a synchronous process. */
6115 synch_process_alive
= 0;
6117 /* Report the status of the synchronous process. */
6119 synch_process_retcode
= WRETCODE (w
);
6120 else if (WIFSIGNALED (w
))
6122 int code
= WTERMSIG (w
);
6125 synchronize_system_messages_locale ();
6126 signame
= strsignal (code
);
6129 signame
= "unknown";
6131 synch_process_death
= signame
;
6134 /* Tell wait_reading_process_input that it needs to wake up and
6136 if (input_available_clear_time
)
6137 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6140 /* On some systems, we must return right away.
6141 If any more processes want to signal us, we will
6143 Otherwise (on systems that have WNOHANG), loop around
6144 to use up all the processes that have something to tell us. */
6145 #if (defined WINDOWSNT \
6146 || (defined USG && !defined GNU_LINUX \
6147 && !(defined HPUX && defined WNOHANG)))
6148 #if defined (USG) && ! defined (POSIX_SIGNALS)
6149 signal (signo
, sigchld_handler
);
6153 #endif /* USG, but not HPUX with WNOHANG */
6159 exec_sentinel_unwind (data
)
6162 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6167 exec_sentinel_error_handler (error
)
6170 cmd_error_internal (error
, "error in process sentinel: ");
6172 update_echo_area ();
6173 Fsleep_for (make_number (2), Qnil
);
6178 exec_sentinel (proc
, reason
)
6179 Lisp_Object proc
, reason
;
6181 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6182 register struct Lisp_Process
*p
= XPROCESS (proc
);
6183 int count
= SPECPDL_INDEX ();
6184 int outer_running_asynch_code
= running_asynch_code
;
6185 int waiting
= waiting_for_user_input_p
;
6187 /* No need to gcpro these, because all we do with them later
6188 is test them for EQness, and none of them should be a string. */
6189 odeactivate
= Vdeactivate_mark
;
6190 XSETBUFFER (obuffer
, current_buffer
);
6191 okeymap
= current_buffer
->keymap
;
6193 sentinel
= p
->sentinel
;
6194 if (NILP (sentinel
))
6197 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6198 assure that it gets restored no matter how the sentinel exits. */
6200 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6201 /* Inhibit quit so that random quits don't screw up a running filter. */
6202 specbind (Qinhibit_quit
, Qt
);
6203 specbind (Qlast_nonmenu_event
, Qt
);
6205 /* In case we get recursively called,
6206 and we already saved the match data nonrecursively,
6207 save the same match data in safely recursive fashion. */
6208 if (outer_running_asynch_code
)
6211 tem
= Fmatch_data (Qnil
, Qnil
);
6212 restore_match_data ();
6213 record_unwind_protect (Fset_match_data
, Fmatch_data (Qnil
, Qnil
));
6214 Fset_match_data (tem
);
6217 /* For speed, if a search happens within this code,
6218 save the match data in a special nonrecursive fashion. */
6219 running_asynch_code
= 1;
6221 internal_condition_case_1 (read_process_output_call
,
6223 Fcons (proc
, Fcons (reason
, Qnil
))),
6224 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6225 exec_sentinel_error_handler
);
6227 /* If we saved the match data nonrecursively, restore it now. */
6228 restore_match_data ();
6229 running_asynch_code
= outer_running_asynch_code
;
6231 Vdeactivate_mark
= odeactivate
;
6233 /* Restore waiting_for_user_input_p as it was
6234 when we were called, in case the filter clobbered it. */
6235 waiting_for_user_input_p
= waiting
;
6238 if (! EQ (Fcurrent_buffer (), obuffer
)
6239 || ! EQ (current_buffer
->keymap
, okeymap
))
6241 /* But do it only if the caller is actually going to read events.
6242 Otherwise there's no need to make him wake up, and it could
6243 cause trouble (for example it would make Fsit_for return). */
6244 if (waiting_for_user_input_p
== -1)
6245 record_asynch_buffer_change ();
6247 unbind_to (count
, Qnil
);
6250 /* Report all recent events of a change in process status
6251 (either run the sentinel or output a message).
6252 This is usually done while Emacs is waiting for keyboard input
6253 but can be done at other times. */
6258 register Lisp_Object proc
, buffer
;
6259 Lisp_Object tail
, msg
;
6260 struct gcpro gcpro1
, gcpro2
;
6264 /* We need to gcpro tail; if read_process_output calls a filter
6265 which deletes a process and removes the cons to which tail points
6266 from Vprocess_alist, and then causes a GC, tail is an unprotected
6270 /* Set this now, so that if new processes are created by sentinels
6271 that we run, we get called again to handle their status changes. */
6272 update_tick
= process_tick
;
6274 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
6277 register struct Lisp_Process
*p
;
6279 proc
= Fcdr (Fcar (tail
));
6280 p
= XPROCESS (proc
);
6282 if (XINT (p
->tick
) != XINT (p
->update_tick
))
6284 XSETINT (p
->update_tick
, XINT (p
->tick
));
6286 /* If process is still active, read any output that remains. */
6287 while (! EQ (p
->filter
, Qt
)
6288 && ! EQ (p
->status
, Qconnect
)
6289 && ! EQ (p
->status
, Qlisten
)
6290 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6291 && XINT (p
->infd
) >= 0
6292 && read_process_output (proc
, XINT (p
->infd
)) > 0);
6296 /* Get the text to use for the message. */
6297 if (!NILP (p
->raw_status_low
))
6299 msg
= status_message (p
->status
);
6301 /* If process is terminated, deactivate it or delete it. */
6303 if (CONSP (p
->status
))
6304 symbol
= XCAR (p
->status
);
6306 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6307 || EQ (symbol
, Qclosed
))
6309 if (delete_exited_processes
)
6310 remove_process (proc
);
6312 deactivate_process (proc
);
6315 /* The actions above may have further incremented p->tick.
6316 So set p->update_tick again
6317 so that an error in the sentinel will not cause
6318 this code to be run again. */
6319 XSETINT (p
->update_tick
, XINT (p
->tick
));
6320 /* Now output the message suitably. */
6321 if (!NILP (p
->sentinel
))
6322 exec_sentinel (proc
, msg
);
6323 /* Don't bother with a message in the buffer
6324 when a process becomes runnable. */
6325 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6327 Lisp_Object ro
, tem
;
6328 struct buffer
*old
= current_buffer
;
6329 int opoint
, opoint_byte
;
6330 int before
, before_byte
;
6332 ro
= XBUFFER (buffer
)->read_only
;
6334 /* Avoid error if buffer is deleted
6335 (probably that's why the process is dead, too) */
6336 if (NILP (XBUFFER (buffer
)->name
))
6338 Fset_buffer (buffer
);
6341 opoint_byte
= PT_BYTE
;
6342 /* Insert new output into buffer
6343 at the current end-of-output marker,
6344 thus preserving logical ordering of input and output. */
6345 if (XMARKER (p
->mark
)->buffer
)
6346 Fgoto_char (p
->mark
);
6348 SET_PT_BOTH (ZV
, ZV_BYTE
);
6351 before_byte
= PT_BYTE
;
6353 tem
= current_buffer
->read_only
;
6354 current_buffer
->read_only
= Qnil
;
6355 insert_string ("\nProcess ");
6356 Finsert (1, &p
->name
);
6357 insert_string (" ");
6359 current_buffer
->read_only
= tem
;
6360 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6362 if (opoint
>= before
)
6363 SET_PT_BOTH (opoint
+ (PT
- before
),
6364 opoint_byte
+ (PT_BYTE
- before_byte
));
6366 SET_PT_BOTH (opoint
, opoint_byte
);
6368 set_buffer_internal (old
);
6373 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6374 redisplay_preserve_echo_area (13);
6380 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6381 Sset_process_coding_system
, 1, 3, 0,
6382 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6383 DECODING will be used to decode subprocess output and ENCODING to
6384 encode subprocess input. */)
6385 (proc
, decoding
, encoding
)
6386 register Lisp_Object proc
, decoding
, encoding
;
6388 register struct Lisp_Process
*p
;
6390 CHECK_PROCESS (proc
);
6391 p
= XPROCESS (proc
);
6392 if (XINT (p
->infd
) < 0)
6393 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6394 if (XINT (p
->outfd
) < 0)
6395 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6396 Fcheck_coding_system (decoding
);
6397 Fcheck_coding_system (encoding
);
6399 p
->decode_coding_system
= decoding
;
6400 p
->encode_coding_system
= encoding
;
6401 setup_process_coding_systems (proc
);
6406 DEFUN ("process-coding-system",
6407 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6408 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6410 register Lisp_Object proc
;
6412 CHECK_PROCESS (proc
);
6413 return Fcons (XPROCESS (proc
)->decode_coding_system
,
6414 XPROCESS (proc
)->encode_coding_system
);
6417 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6418 Sset_process_filter_multibyte
, 2, 2, 0,
6419 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6420 If FLAG is non-nil, the filter is given multibyte strings.
6421 If FLAG is nil, the filter is given unibyte strings. In this case,
6422 all character code conversion except for end-of-line conversion is
6425 Lisp_Object proc
, flag
;
6427 register struct Lisp_Process
*p
;
6429 CHECK_PROCESS (proc
);
6430 p
= XPROCESS (proc
);
6431 p
->filter_multibyte
= flag
;
6432 setup_process_coding_systems (proc
);
6437 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6438 Sprocess_filter_multibyte_p
, 1, 1, 0,
6439 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6443 register struct Lisp_Process
*p
;
6445 CHECK_PROCESS (proc
);
6446 p
= XPROCESS (proc
);
6448 return (NILP (p
->filter_multibyte
) ? Qnil
: Qt
);
6453 /* The first time this is called, assume keyboard input comes from DESC
6454 instead of from where we used to expect it.
6455 Subsequent calls mean assume input keyboard can come from DESC
6456 in addition to other places. */
6458 static int add_keyboard_wait_descriptor_called_flag
;
6461 add_keyboard_wait_descriptor (desc
)
6464 if (! add_keyboard_wait_descriptor_called_flag
)
6465 FD_CLR (0, &input_wait_mask
);
6466 add_keyboard_wait_descriptor_called_flag
= 1;
6467 FD_SET (desc
, &input_wait_mask
);
6468 FD_SET (desc
, &non_process_wait_mask
);
6469 if (desc
> max_keyboard_desc
)
6470 max_keyboard_desc
= desc
;
6473 /* From now on, do not expect DESC to give keyboard input. */
6476 delete_keyboard_wait_descriptor (desc
)
6480 int lim
= max_keyboard_desc
;
6482 FD_CLR (desc
, &input_wait_mask
);
6483 FD_CLR (desc
, &non_process_wait_mask
);
6485 if (desc
== max_keyboard_desc
)
6486 for (fd
= 0; fd
< lim
; fd
++)
6487 if (FD_ISSET (fd
, &input_wait_mask
)
6488 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6489 max_keyboard_desc
= fd
;
6492 /* Return nonzero if *MASK has a bit set
6493 that corresponds to one of the keyboard input descriptors. */
6496 keyboard_bit_set (mask
)
6501 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6502 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6503 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6516 if (! noninteractive
|| initialized
)
6518 signal (SIGCHLD
, sigchld_handler
);
6521 FD_ZERO (&input_wait_mask
);
6522 FD_ZERO (&non_keyboard_wait_mask
);
6523 FD_ZERO (&non_process_wait_mask
);
6524 max_process_desc
= 0;
6526 FD_SET (0, &input_wait_mask
);
6528 Vprocess_alist
= Qnil
;
6529 for (i
= 0; i
< MAXDESC
; i
++)
6531 chan_process
[i
] = Qnil
;
6532 proc_buffered_char
[i
] = -1;
6534 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
6535 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
6536 #ifdef DATAGRAM_SOCKETS
6537 bzero (datagram_address
, sizeof datagram_address
);
6542 Lisp_Object subfeatures
= Qnil
;
6543 #define ADD_SUBFEATURE(key, val) \
6544 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
6546 #ifdef NON_BLOCKING_CONNECT
6547 ADD_SUBFEATURE (QCnowait
, Qt
);
6549 #ifdef DATAGRAM_SOCKETS
6550 ADD_SUBFEATURE (QCtype
, Qdatagram
);
6552 #ifdef HAVE_LOCAL_SOCKETS
6553 ADD_SUBFEATURE (QCfamily
, Qlocal
);
6555 #ifdef HAVE_GETSOCKNAME
6556 ADD_SUBFEATURE (QCservice
, Qt
);
6558 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
6559 ADD_SUBFEATURE (QCserver
, Qt
);
6561 #ifdef SO_BINDTODEVICE
6562 ADD_SUBFEATURE (QCoptions
, intern ("bindtodevice"));
6565 ADD_SUBFEATURE (QCoptions
, intern ("broadcast"));
6568 ADD_SUBFEATURE (QCoptions
, intern ("dontroute"));
6571 ADD_SUBFEATURE (QCoptions
, intern ("keepalive"));
6574 ADD_SUBFEATURE (QCoptions
, intern ("linger"));
6577 ADD_SUBFEATURE (QCoptions
, intern ("oobinline"));
6580 ADD_SUBFEATURE (QCoptions
, intern ("priority"));
6583 ADD_SUBFEATURE (QCoptions
, intern ("reuseaddr"));
6585 Fprovide (intern ("make-network-process"), subfeatures
);
6587 #endif /* HAVE_SOCKETS */
6593 Qprocessp
= intern ("processp");
6594 staticpro (&Qprocessp
);
6595 Qrun
= intern ("run");
6597 Qstop
= intern ("stop");
6599 Qsignal
= intern ("signal");
6600 staticpro (&Qsignal
);
6602 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
6605 Qexit = intern ("exit");
6606 staticpro (&Qexit); */
6608 Qopen
= intern ("open");
6610 Qclosed
= intern ("closed");
6611 staticpro (&Qclosed
);
6612 Qconnect
= intern ("connect");
6613 staticpro (&Qconnect
);
6614 Qfailed
= intern ("failed");
6615 staticpro (&Qfailed
);
6616 Qlisten
= intern ("listen");
6617 staticpro (&Qlisten
);
6618 Qlocal
= intern ("local");
6619 staticpro (&Qlocal
);
6620 Qdatagram
= intern ("datagram");
6621 staticpro (&Qdatagram
);
6623 QCname
= intern (":name");
6624 staticpro (&QCname
);
6625 QCbuffer
= intern (":buffer");
6626 staticpro (&QCbuffer
);
6627 QChost
= intern (":host");
6628 staticpro (&QChost
);
6629 QCservice
= intern (":service");
6630 staticpro (&QCservice
);
6631 QCtype
= intern (":type");
6632 staticpro (&QCtype
);
6633 QClocal
= intern (":local");
6634 staticpro (&QClocal
);
6635 QCremote
= intern (":remote");
6636 staticpro (&QCremote
);
6637 QCcoding
= intern (":coding");
6638 staticpro (&QCcoding
);
6639 QCserver
= intern (":server");
6640 staticpro (&QCserver
);
6641 QCnowait
= intern (":nowait");
6642 staticpro (&QCnowait
);
6643 QCsentinel
= intern (":sentinel");
6644 staticpro (&QCsentinel
);
6645 QClog
= intern (":log");
6647 QCnoquery
= intern (":noquery");
6648 staticpro (&QCnoquery
);
6649 QCstop
= intern (":stop");
6650 staticpro (&QCstop
);
6651 QCoptions
= intern (":options");
6652 staticpro (&QCoptions
);
6653 QCplist
= intern (":plist");
6654 staticpro (&QCplist
);
6655 QCfilter_multibyte
= intern (":filter-multibyte");
6656 staticpro (&QCfilter_multibyte
);
6658 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
6659 staticpro (&Qlast_nonmenu_event
);
6661 staticpro (&Vprocess_alist
);
6663 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
6664 doc
: /* *Non-nil means delete processes immediately when they exit.
6665 nil means don't delete them until `list-processes' is run. */);
6667 delete_exited_processes
= 1;
6669 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
6670 doc
: /* Control type of device used to communicate with subprocesses.
6671 Values are nil to use a pipe, or t or `pty' to use a pty.
6672 The value has no effect if the system has no ptys or if all ptys are busy:
6673 then a pipe is used in any case.
6674 The value takes effect when `start-process' is called. */);
6675 Vprocess_connection_type
= Qt
;
6677 defsubr (&Sprocessp
);
6678 defsubr (&Sget_process
);
6679 defsubr (&Sget_buffer_process
);
6680 defsubr (&Sdelete_process
);
6681 defsubr (&Sprocess_status
);
6682 defsubr (&Sprocess_exit_status
);
6683 defsubr (&Sprocess_id
);
6684 defsubr (&Sprocess_name
);
6685 defsubr (&Sprocess_tty_name
);
6686 defsubr (&Sprocess_command
);
6687 defsubr (&Sset_process_buffer
);
6688 defsubr (&Sprocess_buffer
);
6689 defsubr (&Sprocess_mark
);
6690 defsubr (&Sset_process_filter
);
6691 defsubr (&Sprocess_filter
);
6692 defsubr (&Sset_process_sentinel
);
6693 defsubr (&Sprocess_sentinel
);
6694 defsubr (&Sset_process_window_size
);
6695 defsubr (&Sset_process_inherit_coding_system_flag
);
6696 defsubr (&Sprocess_inherit_coding_system_flag
);
6697 defsubr (&Sset_process_query_on_exit_flag
);
6698 defsubr (&Sprocess_query_on_exit_flag
);
6699 defsubr (&Sprocess_contact
);
6700 defsubr (&Sprocess_plist
);
6701 defsubr (&Sset_process_plist
);
6702 defsubr (&Slist_processes
);
6703 defsubr (&Sprocess_list
);
6704 defsubr (&Sstart_process
);
6706 defsubr (&Sset_network_process_options
);
6707 defsubr (&Smake_network_process
);
6708 defsubr (&Sformat_network_address
);
6710 defsubr (&Snetwork_interface_list
);
6712 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
6713 defsubr (&Sget_network_interface_info
);
6715 #endif /* HAVE_SOCKETS */
6716 #ifdef DATAGRAM_SOCKETS
6717 defsubr (&Sprocess_datagram_address
);
6718 defsubr (&Sset_process_datagram_address
);
6720 defsubr (&Saccept_process_output
);
6721 defsubr (&Sprocess_send_region
);
6722 defsubr (&Sprocess_send_string
);
6723 defsubr (&Sinterrupt_process
);
6724 defsubr (&Skill_process
);
6725 defsubr (&Squit_process
);
6726 defsubr (&Sstop_process
);
6727 defsubr (&Scontinue_process
);
6728 defsubr (&Sprocess_running_child_p
);
6729 defsubr (&Sprocess_send_eof
);
6730 defsubr (&Ssignal_process
);
6731 defsubr (&Swaiting_for_user_input_p
);
6732 /* defsubr (&Sprocess_connection); */
6733 defsubr (&Sset_process_coding_system
);
6734 defsubr (&Sprocess_coding_system
);
6735 defsubr (&Sset_process_filter_multibyte
);
6736 defsubr (&Sprocess_filter_multibyte_p
);
6740 #else /* not subprocesses */
6742 #include <sys/types.h>
6746 #include "systime.h"
6747 #include "charset.h"
6749 #include "termopts.h"
6750 #include "sysselect.h"
6752 extern int frame_garbaged
;
6754 extern EMACS_TIME
timer_check ();
6755 extern int timers_run
;
6759 /* As described above, except assuming that there are no subprocesses:
6761 Wait for timeout to elapse and/or keyboard input to be available.
6764 timeout in seconds, or
6765 zero for no limit, or
6766 -1 means gobble data immediately available but don't wait for any.
6768 read_kbd is a Lisp_Object:
6769 0 to ignore keyboard input, or
6770 1 to return when input is available, or
6771 -1 means caller will actually read the input, so don't throw to
6773 a cons cell, meaning wait until its car is non-nil
6774 (and gobble terminal input into the buffer if any arrives), or
6775 We know that read_kbd will never be a Lisp_Process, since
6776 `subprocesses' isn't defined.
6778 do_display != 0 means redisplay should be done to show subprocess
6779 output that arrives.
6781 Return true iff we received input from any process. */
6784 wait_reading_process_input (time_limit
, microsecs
, read_kbd
, do_display
)
6785 int time_limit
, microsecs
;
6786 Lisp_Object read_kbd
;
6790 EMACS_TIME end_time
, timeout
;
6791 SELECT_TYPE waitchannels
;
6793 /* Either nil or a cons cell, the car of which is of interest and
6794 may be changed outside of this routine. */
6795 Lisp_Object wait_for_cell
;
6797 wait_for_cell
= Qnil
;
6799 /* If waiting for non-nil in a cell, record where. */
6800 if (CONSP (read_kbd
))
6802 wait_for_cell
= read_kbd
;
6803 XSETFASTINT (read_kbd
, 0);
6806 /* What does time_limit really mean? */
6807 if (time_limit
|| microsecs
)
6809 EMACS_GET_TIME (end_time
);
6810 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
6811 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
6814 /* Turn off periodic alarms (in case they are in use)
6815 and then turn off any other atimers,
6816 because the select emulator uses alarms. */
6818 turn_on_atimers (0);
6822 int timeout_reduced_for_timers
= 0;
6824 /* If calling from keyboard input, do not quit
6825 since we want to return C-g as an input character.
6826 Otherwise, do pending quit if requested. */
6827 if (XINT (read_kbd
) >= 0)
6830 /* Exit now if the cell we're waiting for became non-nil. */
6831 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6834 /* Compute time from now till when time limit is up */
6835 /* Exit if already run out */
6836 if (time_limit
== -1)
6838 /* -1 specified for timeout means
6839 gobble output available now
6840 but don't wait at all. */
6842 EMACS_SET_SECS_USECS (timeout
, 0, 0);
6844 else if (time_limit
|| microsecs
)
6846 EMACS_GET_TIME (timeout
);
6847 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
6848 if (EMACS_TIME_NEG_P (timeout
))
6853 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
6856 /* If our caller will not immediately handle keyboard events,
6857 run timer events directly.
6858 (Callers that will immediately read keyboard events
6859 call timer_delay on their own.) */
6860 if (NILP (wait_for_cell
))
6862 EMACS_TIME timer_delay
;
6866 int old_timers_run
= timers_run
;
6867 timer_delay
= timer_check (1);
6868 if (timers_run
!= old_timers_run
&& do_display
)
6869 /* We must retry, since a timer may have requeued itself
6870 and that could alter the time delay. */
6871 redisplay_preserve_echo_area (14);
6875 while (!detect_input_pending ());
6877 /* If there is unread keyboard input, also return. */
6878 if (XINT (read_kbd
) != 0
6879 && requeued_events_pending_p ())
6882 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
6884 EMACS_TIME difference
;
6885 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
6886 if (EMACS_TIME_NEG_P (difference
))
6888 timeout
= timer_delay
;
6889 timeout_reduced_for_timers
= 1;
6894 /* Cause C-g and alarm signals to take immediate action,
6895 and cause input available signals to zero out timeout. */
6896 if (XINT (read_kbd
) < 0)
6897 set_waiting_for_input (&timeout
);
6899 /* Wait till there is something to do. */
6901 if (! XINT (read_kbd
) && NILP (wait_for_cell
))
6902 FD_ZERO (&waitchannels
);
6904 FD_SET (0, &waitchannels
);
6906 /* If a frame has been newly mapped and needs updating,
6907 reprocess its display stuff. */
6908 if (frame_garbaged
&& do_display
)
6910 clear_waiting_for_input ();
6911 redisplay_preserve_echo_area (15);
6912 if (XINT (read_kbd
) < 0)
6913 set_waiting_for_input (&timeout
);
6916 if (XINT (read_kbd
) && detect_input_pending ())
6919 FD_ZERO (&waitchannels
);
6922 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
6927 /* Make C-g and alarm signals set flags again */
6928 clear_waiting_for_input ();
6930 /* If we woke up due to SIGWINCH, actually change size now. */
6931 do_pending_window_change (0);
6933 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
6934 /* We waited the full specified time, so return now. */
6939 /* If the system call was interrupted, then go around the
6941 if (xerrno
== EINTR
)
6942 FD_ZERO (&waitchannels
);
6944 error ("select error: %s", emacs_strerror (xerrno
));
6947 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
6948 /* System sometimes fails to deliver SIGIO. */
6949 kill (getpid (), SIGIO
);
6952 if (XINT (read_kbd
) && interrupt_input
&& (waitchannels
& 1))
6953 kill (getpid (), SIGIO
);
6956 /* Check for keyboard input */
6958 if ((XINT (read_kbd
) != 0)
6959 && detect_input_pending_run_timers (do_display
))
6961 swallow_events (do_display
);
6962 if (detect_input_pending_run_timers (do_display
))
6966 /* If there is unread keyboard input, also return. */
6967 if (XINT (read_kbd
) != 0
6968 && requeued_events_pending_p ())
6971 /* If wait_for_cell. check for keyboard input
6972 but don't run any timers.
6973 ??? (It seems wrong to me to check for keyboard
6974 input at all when wait_for_cell, but the code
6975 has been this way since July 1994.
6976 Try changing this after version 19.31.) */
6977 if (! NILP (wait_for_cell
)
6978 && detect_input_pending ())
6980 swallow_events (do_display
);
6981 if (detect_input_pending ())
6985 /* Exit now if the cell we're waiting for became non-nil. */
6986 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
6996 /* Don't confuse make-docfile by having two doc strings for this function.
6997 make-docfile does not pay attention to #if, for good reason! */
6998 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7001 register Lisp_Object name
;
7006 /* Don't confuse make-docfile by having two doc strings for this function.
7007 make-docfile does not pay attention to #if, for good reason! */
7008 DEFUN ("process-inherit-coding-system-flag",
7009 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7013 register Lisp_Object process
;
7015 /* Ignore the argument and return the value of
7016 inherit-process-coding-system. */
7017 return inherit_process_coding_system
? Qt
: Qnil
;
7020 /* Kill all processes associated with `buffer'.
7021 If `buffer' is nil, kill all processes.
7022 Since we have no subprocesses, this does nothing. */
7025 kill_buffer_processes (buffer
)
7038 QCtype
= intern (":type");
7039 staticpro (&QCtype
);
7041 defsubr (&Sget_buffer_process
);
7042 defsubr (&Sprocess_inherit_coding_system_flag
);
7046 #endif /* not subprocesses */
7048 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7049 (do not change this comment) */