1 /* Asynchronous subprocess control for GNU Emacs.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995,
3 1996, 1998, 1999, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
27 /* This file is split into two parts by the following preprocessor
28 conditional. The 'then' clause contains all of the support for
29 asynchronous subprocesses. The 'else' clause contains stub
30 versions of some of the asynchronous subprocess routines that are
31 often called elsewhere in Emacs, so we don't have to #ifdef the
32 sections that call them. */
40 #include <sys/types.h> /* some typedefs are used in sys/file.h */
43 #ifdef HAVE_INTTYPES_H
50 #if defined(WINDOWSNT) || defined(UNIX98_PTYS)
53 #endif /* not WINDOWSNT */
55 #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */
56 #include <sys/socket.h>
58 #include <netinet/in.h>
59 #include <arpa/inet.h>
60 #ifdef NEED_NET_ERRNO_H
61 #include <net/errno.h>
62 #endif /* NEED_NET_ERRNO_H */
64 /* Are local (unix) sockets supported? */
65 #if defined (HAVE_SYS_UN_H) && !defined (NO_SOCKETS_IN_FILE_SYSTEM)
66 #if !defined (AF_LOCAL) && defined (AF_UNIX)
67 #define AF_LOCAL AF_UNIX
70 #define HAVE_LOCAL_SOCKETS
74 #endif /* HAVE_SOCKETS */
76 /* TERM is a poor-man's SLIP, used on GNU/Linux. */
81 /* On some systems, e.g. DGUX, inet_addr returns a 'struct in_addr'. */
82 #ifdef HAVE_BROKEN_INET_ADDR
83 #define IN_ADDR struct in_addr
84 #define NUMERIC_ADDR_ERROR (numeric_addr.s_addr == -1)
86 #define IN_ADDR unsigned long
87 #define NUMERIC_ADDR_ERROR (numeric_addr == -1)
90 #if defined(BSD_SYSTEM) || defined(STRIDE)
91 #include <sys/ioctl.h>
92 #if !defined (O_NDELAY) && defined (HAVE_PTYS) && !defined(USG5)
94 #endif /* HAVE_PTYS and no O_NDELAY */
95 #endif /* BSD_SYSTEM || STRIDE */
97 #ifdef BROKEN_O_NONBLOCK
99 #endif /* BROKEN_O_NONBLOCK */
105 /* Can we use SIOCGIFCONF and/or SIOCGIFADDR */
107 #if defined(HAVE_SYS_IOCTL_H) && defined(HAVE_NET_IF_H)
108 /* sys/ioctl.h may have been included already */
110 #include <sys/ioctl.h>
117 #include <sys/sysmacros.h> /* for "minor" */
118 #endif /* not IRIS */
121 #include <sys/wait.h>
124 /* Disable IPv6 support for w32 until someone figures out how to do it
141 #include "termhooks.h"
142 #include "termopts.h"
143 #include "commands.h"
144 #include "keyboard.h"
146 #include "blockinput.h"
147 #include "dispextern.h"
148 #include "composite.h"
151 Lisp_Object Qprocessp
;
152 Lisp_Object Qrun
, Qstop
, Qsignal
;
153 Lisp_Object Qopen
, Qclosed
, Qconnect
, Qfailed
, Qlisten
;
154 Lisp_Object Qlocal
, Qipv4
, Qdatagram
;
158 Lisp_Object QCname
, QCbuffer
, QChost
, QCservice
, QCtype
;
159 Lisp_Object QClocal
, QCremote
, QCcoding
;
160 Lisp_Object QCserver
, QCnowait
, QCnoquery
, QCstop
;
161 Lisp_Object QCsentinel
, QClog
, QCoptions
, QCplist
;
162 Lisp_Object QCfilter_multibyte
;
163 Lisp_Object Qlast_nonmenu_event
;
164 /* QCfamily is declared and initialized in xfaces.c,
165 QCfilter in keyboard.c. */
166 extern Lisp_Object QCfamily
, QCfilter
;
168 /* Qexit is declared and initialized in eval.c. */
170 /* QCfamily is defined in xfaces.c. */
171 extern Lisp_Object QCfamily
;
172 /* QCfilter is defined in keyboard.c. */
173 extern Lisp_Object QCfilter
;
175 /* a process object is a network connection when its childp field is neither
176 Qt nor Qnil but is instead a property list (KEY VAL ...). */
179 #define NETCONN_P(p) (GC_CONSP (XPROCESS (p)->childp))
180 #define NETCONN1_P(p) (GC_CONSP ((p)->childp))
182 #define NETCONN_P(p) 0
183 #define NETCONN1_P(p) 0
184 #endif /* HAVE_SOCKETS */
186 /* Define first descriptor number available for subprocesses. */
188 #define FIRST_PROC_DESC 1
190 #define FIRST_PROC_DESC 3
193 /* Define SIGCHLD as an alias for SIGCLD. There are many conditionals
196 #if !defined (SIGCHLD) && defined (SIGCLD)
197 #define SIGCHLD SIGCLD
200 #include "syssignal.h"
204 extern char *get_operating_system_release ();
210 extern char *sys_errlist
[];
217 /* t means use pty, nil means use a pipe,
218 maybe other values to come. */
219 static Lisp_Object Vprocess_connection_type
;
223 #include <sys/socket.h>
227 /* These next two vars are non-static since sysdep.c uses them in the
228 emulation of `select'. */
229 /* Number of events of change of status of a process. */
231 /* Number of events for which the user or sentinel has been notified. */
234 /* Define NON_BLOCKING_CONNECT if we can support non-blocking connects. */
236 #ifdef BROKEN_NON_BLOCKING_CONNECT
237 #undef NON_BLOCKING_CONNECT
239 #ifndef NON_BLOCKING_CONNECT
242 #if defined (HAVE_GETPEERNAME) || defined (GNU_LINUX)
243 #if defined (O_NONBLOCK) || defined (O_NDELAY)
244 #if defined (EWOULDBLOCK) || defined (EINPROGRESS)
245 #define NON_BLOCKING_CONNECT
246 #endif /* EWOULDBLOCK || EINPROGRESS */
247 #endif /* O_NONBLOCK || O_NDELAY */
248 #endif /* HAVE_GETPEERNAME || GNU_LINUX */
249 #endif /* HAVE_SELECT */
250 #endif /* HAVE_SOCKETS */
251 #endif /* NON_BLOCKING_CONNECT */
252 #endif /* BROKEN_NON_BLOCKING_CONNECT */
254 /* Define DATAGRAM_SOCKETS if datagrams can be used safely on
255 this system. We need to read full packets, so we need a
256 "non-destructive" select. So we require either native select,
257 or emulation of select using FIONREAD. */
259 #ifdef BROKEN_DATAGRAM_SOCKETS
260 #undef DATAGRAM_SOCKETS
262 #ifndef DATAGRAM_SOCKETS
264 #if defined (HAVE_SELECT) || defined (FIONREAD)
265 #if defined (HAVE_SENDTO) && defined (HAVE_RECVFROM) && defined (EMSGSIZE)
266 #define DATAGRAM_SOCKETS
267 #endif /* HAVE_SENDTO && HAVE_RECVFROM && EMSGSIZE */
268 #endif /* HAVE_SELECT || FIONREAD */
269 #endif /* HAVE_SOCKETS */
270 #endif /* DATAGRAM_SOCKETS */
271 #endif /* BROKEN_DATAGRAM_SOCKETS */
274 #undef NON_BLOCKING_CONNECT
275 #undef DATAGRAM_SOCKETS
278 #if !defined (ADAPTIVE_READ_BUFFERING) && !defined (NO_ADAPTIVE_READ_BUFFERING)
279 #ifdef EMACS_HAS_USECS
280 #define ADAPTIVE_READ_BUFFERING
284 #ifdef ADAPTIVE_READ_BUFFERING
285 #define READ_OUTPUT_DELAY_INCREMENT 10000
286 #define READ_OUTPUT_DELAY_MAX (READ_OUTPUT_DELAY_INCREMENT * 5)
287 #define READ_OUTPUT_DELAY_MAX_MAX (READ_OUTPUT_DELAY_INCREMENT * 7)
289 /* Number of processes which have a non-zero read_output_delay,
290 and therefore might be delayed for adaptive read buffering. */
292 static int process_output_delay_count
;
294 /* Non-zero if any process has non-nil read_output_skip. */
296 static int process_output_skip
;
298 /* Non-nil means to delay reading process output to improve buffering.
299 A value of t means that delay is reset after each send, any other
300 non-nil value does not reset the delay. A value of nil disables
301 adaptive read buffering completely. */
302 static Lisp_Object Vprocess_adaptive_read_buffering
;
304 #define process_output_delay_count 0
308 #include "sysselect.h"
310 static int keyboard_bit_set
P_ ((SELECT_TYPE
*));
311 static void deactivate_process
P_ ((Lisp_Object
));
312 static void status_notify
P_ ((struct Lisp_Process
*));
313 static int read_process_output
P_ ((Lisp_Object
, int));
315 /* If we support a window system, turn on the code to poll periodically
316 to detect C-g. It isn't actually used when doing interrupt input. */
317 #ifdef HAVE_WINDOW_SYSTEM
318 #define POLL_FOR_INPUT
321 static Lisp_Object
get_process ();
322 static void exec_sentinel ();
324 extern EMACS_TIME
timer_check ();
325 extern int timers_run
;
327 /* Mask of bits indicating the descriptors that we wait for input on. */
329 static SELECT_TYPE input_wait_mask
;
331 /* Mask that excludes keyboard input descriptor (s). */
333 static SELECT_TYPE non_keyboard_wait_mask
;
335 /* Mask that excludes process input descriptor (s). */
337 static SELECT_TYPE non_process_wait_mask
;
339 #ifdef NON_BLOCKING_CONNECT
340 /* Mask of bits indicating the descriptors that we wait for connect to
341 complete on. Once they complete, they are removed from this mask
342 and added to the input_wait_mask and non_keyboard_wait_mask. */
344 static SELECT_TYPE connect_wait_mask
;
346 /* Number of bits set in connect_wait_mask. */
347 static int num_pending_connects
;
349 #define IF_NON_BLOCKING_CONNECT(s) s
351 #define IF_NON_BLOCKING_CONNECT(s)
354 /* The largest descriptor currently in use for a process object. */
355 static int max_process_desc
;
357 /* The largest descriptor currently in use for keyboard input. */
358 static int max_keyboard_desc
;
360 /* Nonzero means delete a process right away if it exits. */
361 static int delete_exited_processes
;
363 /* Indexed by descriptor, gives the process (if any) for that descriptor */
364 Lisp_Object chan_process
[MAXDESC
];
366 /* Alist of elements (NAME . PROCESS) */
367 Lisp_Object Vprocess_alist
;
369 /* Buffered-ahead input char from process, indexed by channel.
370 -1 means empty (no char is buffered).
371 Used on sys V where the only way to tell if there is any
372 output from the process is to read at least one char.
373 Always -1 on systems that support FIONREAD. */
375 /* Don't make static; need to access externally. */
376 int proc_buffered_char
[MAXDESC
];
378 /* Table of `struct coding-system' for each process. */
379 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
380 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
382 #ifdef DATAGRAM_SOCKETS
383 /* Table of `partner address' for datagram sockets. */
384 struct sockaddr_and_len
{
387 } datagram_address
[MAXDESC
];
388 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
389 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0)
391 #define DATAGRAM_CHAN_P(chan) (0)
392 #define DATAGRAM_CONN_P(proc) (0)
395 /* Maximum number of bytes to send to a pty without an eof. */
396 static int pty_max_bytes
;
398 /* Nonzero means don't run process sentinels. This is used
400 int inhibit_sentinels
;
406 /* The file name of the pty opened by allocate_pty. */
408 static char pty_name
[24];
411 /* Compute the Lisp form of the process status, p->status, from
412 the numeric status that was returned by `wait'. */
414 static Lisp_Object
status_convert ();
418 struct Lisp_Process
*p
;
420 union { int i
; WAITTYPE wt
; } u
;
421 eassert (p
->raw_status_new
);
423 p
->status
= status_convert (u
.wt
);
424 p
->raw_status_new
= 0;
427 /* Convert a process status word in Unix format to
428 the list that we use internally. */
435 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
436 else if (WIFEXITED (w
))
437 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
438 WCOREDUMP (w
) ? Qt
: Qnil
));
439 else if (WIFSIGNALED (w
))
440 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
441 WCOREDUMP (w
) ? Qt
: Qnil
));
446 /* Given a status-list, extract the three pieces of information
447 and store them individually through the three pointers. */
450 decode_status (l
, symbol
, code
, coredump
)
468 *code
= XFASTINT (XCAR (tem
));
470 *coredump
= !NILP (tem
);
474 /* Return a string describing a process status list. */
478 struct Lisp_Process
*p
;
480 Lisp_Object status
= p
->status
;
483 Lisp_Object string
, string2
;
485 decode_status (status
, &symbol
, &code
, &coredump
);
487 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
490 synchronize_system_messages_locale ();
491 signame
= strsignal (code
);
494 string
= build_string (signame
);
495 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
496 SSET (string
, 0, DOWNCASE (SREF (string
, 0)));
497 return concat2 (string
, string2
);
499 else if (EQ (symbol
, Qexit
))
502 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
504 return build_string ("finished\n");
505 string
= Fnumber_to_string (make_number (code
));
506 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
507 return concat3 (build_string ("exited abnormally with code "),
510 else if (EQ (symbol
, Qfailed
))
512 string
= Fnumber_to_string (make_number (code
));
513 string2
= build_string ("\n");
514 return concat3 (build_string ("failed with code "),
518 return Fcopy_sequence (Fsymbol_name (symbol
));
523 /* Open an available pty, returning a file descriptor.
524 Return -1 on failure.
525 The file name of the terminal corresponding to the pty
526 is left in the variable pty_name. */
537 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
538 for (i
= 0; i
< 16; i
++)
541 struct stat stb
; /* Used in some PTY_OPEN. */
542 #ifdef PTY_NAME_SPRINTF
545 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
546 #endif /* no PTY_NAME_SPRINTF */
550 #else /* no PTY_OPEN */
553 /* Unusual IRIS code */
554 *ptyv
= emacs_open ("/dev/ptc", O_RDWR
| O_NDELAY
, 0);
557 if (fstat (fd
, &stb
) < 0)
559 # else /* not IRIS */
560 { /* Some systems name their pseudoterminals so that there are gaps in
561 the usual sequence - for example, on HP9000/S700 systems, there
562 are no pseudoterminals with names ending in 'f'. So we wait for
563 three failures in a row before deciding that we've reached the
565 int failed_count
= 0;
567 if (stat (pty_name
, &stb
) < 0)
570 if (failed_count
>= 3)
577 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
579 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
581 # endif /* not IRIS */
583 #endif /* no PTY_OPEN */
587 /* check to make certain that both sides are available
588 this avoids a nasty yet stupid bug in rlogins */
589 #ifdef PTY_TTY_NAME_SPRINTF
592 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
593 #endif /* no PTY_TTY_NAME_SPRINTF */
595 if (access (pty_name
, 6) != 0)
598 # if !defined(IRIS) && !defined(__sgi)
604 #endif /* not UNIPLUS */
611 #endif /* HAVE_PTYS */
617 register Lisp_Object val
, tem
, name1
;
618 register struct Lisp_Process
*p
;
622 p
= allocate_process ();
624 XSETINT (p
->infd
, -1);
625 XSETINT (p
->outfd
, -1);
626 XSETFASTINT (p
->tick
, 0);
627 XSETFASTINT (p
->update_tick
, 0);
629 p
->raw_status_new
= 0;
631 p
->mark
= Fmake_marker ();
633 #ifdef ADAPTIVE_READ_BUFFERING
634 p
->adaptive_read_buffering
= Qnil
;
635 XSETFASTINT (p
->read_output_delay
, 0);
636 p
->read_output_skip
= Qnil
;
639 /* If name is already in use, modify it until it is unused. */
644 tem
= Fget_process (name1
);
645 if (NILP (tem
)) break;
646 sprintf (suffix
, "<%d>", i
);
647 name1
= concat2 (name
, build_string (suffix
));
651 XSETPROCESS (val
, p
);
652 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
657 remove_process (proc
)
658 register Lisp_Object proc
;
660 register Lisp_Object pair
;
662 pair
= Frassq (proc
, Vprocess_alist
);
663 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
665 deactivate_process (proc
);
668 /* Setup coding systems of PROCESS. */
671 setup_process_coding_systems (process
)
674 struct Lisp_Process
*p
= XPROCESS (process
);
675 int inch
= XINT (p
->infd
);
676 int outch
= XINT (p
->outfd
);
678 if (inch
< 0 || outch
< 0)
681 if (!proc_decode_coding_system
[inch
])
682 proc_decode_coding_system
[inch
]
683 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
684 setup_coding_system (p
->decode_coding_system
,
685 proc_decode_coding_system
[inch
]);
686 if (! NILP (p
->filter
))
688 if (NILP (p
->filter_multibyte
))
689 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
691 else if (BUFFERP (p
->buffer
))
693 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
694 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
697 if (!proc_encode_coding_system
[outch
])
698 proc_encode_coding_system
[outch
]
699 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
700 setup_coding_system (p
->encode_coding_system
,
701 proc_encode_coding_system
[outch
]);
702 if (proc_encode_coding_system
[outch
]->eol_type
== CODING_EOL_UNDECIDED
)
703 proc_encode_coding_system
[outch
]->eol_type
= system_eol_type
;
706 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
707 doc
: /* Return t if OBJECT is a process. */)
711 return PROCESSP (object
) ? Qt
: Qnil
;
714 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
715 doc
: /* Return the process named NAME, or nil if there is none. */)
717 register Lisp_Object name
;
722 return Fcdr (Fassoc (name
, Vprocess_alist
));
725 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
726 doc
: /* Return the (or a) process associated with BUFFER.
727 BUFFER may be a buffer or the name of one. */)
729 register Lisp_Object buffer
;
731 register Lisp_Object buf
, tail
, proc
;
733 if (NILP (buffer
)) return Qnil
;
734 buf
= Fget_buffer (buffer
);
735 if (NILP (buf
)) return Qnil
;
737 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
739 proc
= Fcdr (Fcar (tail
));
740 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
746 /* This is how commands for the user decode process arguments. It
747 accepts a process, a process name, a buffer, a buffer name, or nil.
748 Buffers denote the first process in the buffer, and nil denotes the
753 register Lisp_Object name
;
755 register Lisp_Object proc
, obj
;
758 obj
= Fget_process (name
);
760 obj
= Fget_buffer (name
);
762 error ("Process %s does not exist", SDATA (name
));
764 else if (NILP (name
))
765 obj
= Fcurrent_buffer ();
769 /* Now obj should be either a buffer object or a process object.
773 proc
= Fget_buffer_process (obj
);
775 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
787 /* Fdelete_process promises to immediately forget about the process, but in
788 reality, Emacs needs to remember those processes until they have been
789 treated by sigchld_handler; otherwise this handler would consider the
790 process as being synchronous and say that the synchronous process is
792 static Lisp_Object deleted_pid_list
;
795 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
796 doc
: /* Delete PROCESS: kill it and forget about it immediately.
797 PROCESS may be a process, a buffer, the name of a process or buffer, or
798 nil, indicating the current buffer's process. */)
800 register Lisp_Object process
;
802 register struct Lisp_Process
*p
;
804 process
= get_process (process
);
805 p
= XPROCESS (process
);
807 p
->raw_status_new
= 0;
810 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
811 XSETINT (p
->tick
, ++process_tick
);
814 else if (XINT (p
->infd
) >= 0)
818 /* Assignment to EMACS_INT stops GCC whining about limited range
820 EMACS_INT pid
= p
->pid
;
822 /* No problem storing the pid here, as it is still in Vprocess_alist. */
823 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
824 /* GC treated elements set to nil. */
825 Fdelq (Qnil
, deleted_pid_list
));
826 /* If the process has already signaled, remove it from the list. */
827 if (p
->raw_status_new
)
830 if (CONSP (p
->status
))
831 symbol
= XCAR (p
->status
);
832 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
834 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
838 Fkill_process (process
, Qnil
);
839 /* Do this now, since remove_process will make sigchld_handler do nothing. */
841 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
842 XSETINT (p
->tick
, ++process_tick
);
846 remove_process (process
);
850 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
851 doc
: /* Return the status of PROCESS.
852 The returned value is one of the following symbols:
853 run -- for a process that is running.
854 stop -- for a process stopped but continuable.
855 exit -- for a process that has exited.
856 signal -- for a process that has got a fatal signal.
857 open -- for a network stream connection that is open.
858 listen -- for a network stream server that is listening.
859 closed -- for a network stream connection that is closed.
860 connect -- when waiting for a non-blocking connection to complete.
861 failed -- when a non-blocking connection has failed.
862 nil -- if arg is a process name and no such process exists.
863 PROCESS may be a process, a buffer, the name of a process, or
864 nil, indicating the current buffer's process. */)
866 register Lisp_Object process
;
868 register struct Lisp_Process
*p
;
869 register Lisp_Object status
;
871 if (STRINGP (process
))
872 process
= Fget_process (process
);
874 process
= get_process (process
);
879 p
= XPROCESS (process
);
880 if (p
->raw_status_new
)
884 status
= XCAR (status
);
887 if (EQ (status
, Qexit
))
889 else if (EQ (p
->command
, Qt
))
891 else if (EQ (status
, Qrun
))
897 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
899 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
900 If PROCESS has not yet exited or died, return 0. */)
902 register Lisp_Object process
;
904 CHECK_PROCESS (process
);
905 if (XPROCESS (process
)->raw_status_new
)
906 update_status (XPROCESS (process
));
907 if (CONSP (XPROCESS (process
)->status
))
908 return XCAR (XCDR (XPROCESS (process
)->status
));
909 return make_number (0);
912 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
913 doc
: /* Return the process id of PROCESS.
914 This is the pid of the external process which PROCESS uses or talks to.
915 For a network connection, this value is nil. */)
917 register Lisp_Object process
;
919 /* Assignment to EMACS_INT stops GCC whining about limited range of
923 CHECK_PROCESS (process
);
924 pid
= XPROCESS (process
)->pid
;
925 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
928 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
929 doc
: /* Return the name of PROCESS, as a string.
930 This is the name of the program invoked in PROCESS,
931 possibly modified to make it unique among process names. */)
933 register Lisp_Object process
;
935 CHECK_PROCESS (process
);
936 return XPROCESS (process
)->name
;
939 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
940 doc
: /* Return the command that was executed to start PROCESS.
941 This is a list of strings, the first string being the program executed
942 and the rest of the strings being the arguments given to it.
943 For a non-child channel, this is nil. */)
945 register Lisp_Object process
;
947 CHECK_PROCESS (process
);
948 return XPROCESS (process
)->command
;
951 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
952 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
953 This is the terminal that the process itself reads and writes on,
954 not the name of the pty that Emacs uses to talk with that terminal. */)
956 register Lisp_Object process
;
958 CHECK_PROCESS (process
);
959 return XPROCESS (process
)->tty_name
;
962 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
964 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
966 register Lisp_Object process
, buffer
;
968 struct Lisp_Process
*p
;
970 CHECK_PROCESS (process
);
972 CHECK_BUFFER (buffer
);
973 p
= XPROCESS (process
);
976 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
977 setup_process_coding_systems (process
);
981 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
983 doc
: /* Return the buffer PROCESS is associated with.
984 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
986 register Lisp_Object process
;
988 CHECK_PROCESS (process
);
989 return XPROCESS (process
)->buffer
;
992 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
994 doc
: /* Return the marker for the end of the last output from PROCESS. */)
996 register Lisp_Object process
;
998 CHECK_PROCESS (process
);
999 return XPROCESS (process
)->mark
;
1002 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1004 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
1005 t means stop accepting output from the process.
1007 When a process has a filter, its buffer is not used for output.
1008 Instead, each time it does output, the entire string of output is
1009 passed to the filter.
1011 The filter gets two arguments: the process and the string of output.
1012 The string argument is normally a multibyte string, except:
1013 - if the process' input coding system is no-conversion or raw-text,
1014 it is a unibyte string (the non-converted input), or else
1015 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1016 string (the result of converting the decoded input multibyte
1017 string to unibyte with `string-make-unibyte'). */)
1019 register Lisp_Object process
, filter
;
1021 struct Lisp_Process
*p
;
1023 CHECK_PROCESS (process
);
1024 p
= XPROCESS (process
);
1026 /* Don't signal an error if the process' input file descriptor
1027 is closed. This could make debugging Lisp more difficult,
1028 for example when doing something like
1030 (setq process (start-process ...))
1032 (set-process-filter process ...) */
1034 if (XINT (p
->infd
) >= 0)
1036 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1038 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
1039 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
1041 else if (EQ (p
->filter
, Qt
)
1042 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
1044 FD_SET (XINT (p
->infd
), &input_wait_mask
);
1045 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
1051 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1052 setup_process_coding_systems (process
);
1056 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1058 doc
: /* Returns the filter function of PROCESS; nil if none.
1059 See `set-process-filter' for more info on filter functions. */)
1061 register Lisp_Object process
;
1063 CHECK_PROCESS (process
);
1064 return XPROCESS (process
)->filter
;
1067 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1069 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1070 The sentinel is called as a function when the process changes state.
1071 It gets two arguments: the process, and a string describing the change. */)
1073 register Lisp_Object process
, sentinel
;
1075 struct Lisp_Process
*p
;
1077 CHECK_PROCESS (process
);
1078 p
= XPROCESS (process
);
1080 p
->sentinel
= sentinel
;
1082 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1086 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1088 doc
: /* Return the sentinel of PROCESS; nil if none.
1089 See `set-process-sentinel' for more info on sentinels. */)
1091 register Lisp_Object process
;
1093 CHECK_PROCESS (process
);
1094 return XPROCESS (process
)->sentinel
;
1097 DEFUN ("set-process-window-size", Fset_process_window_size
,
1098 Sset_process_window_size
, 3, 3, 0,
1099 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1100 (process
, height
, width
)
1101 register Lisp_Object process
, height
, width
;
1103 CHECK_PROCESS (process
);
1104 CHECK_NATNUM (height
);
1105 CHECK_NATNUM (width
);
1107 if (XINT (XPROCESS (process
)->infd
) < 0
1108 || set_window_size (XINT (XPROCESS (process
)->infd
),
1109 XINT (height
), XINT (width
)) <= 0)
1115 DEFUN ("set-process-inherit-coding-system-flag",
1116 Fset_process_inherit_coding_system_flag
,
1117 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1118 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1119 If the second argument FLAG is non-nil, then the variable
1120 `buffer-file-coding-system' of the buffer associated with PROCESS
1121 will be bound to the value of the coding system used to decode
1124 This is useful when the coding system specified for the process buffer
1125 leaves either the character code conversion or the end-of-line conversion
1126 unspecified, or if the coding system used to decode the process output
1127 is more appropriate for saving the process buffer.
1129 Binding the variable `inherit-process-coding-system' to non-nil before
1130 starting the process is an alternative way of setting the inherit flag
1131 for the process which will run. */)
1133 register Lisp_Object process
, flag
;
1135 CHECK_PROCESS (process
);
1136 XPROCESS (process
)->inherit_coding_system_flag
= flag
;
1140 DEFUN ("process-inherit-coding-system-flag",
1141 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1143 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1144 If this flag is t, `buffer-file-coding-system' of the buffer
1145 associated with PROCESS will inherit the coding system used to decode
1146 the process output. */)
1148 register Lisp_Object process
;
1150 CHECK_PROCESS (process
);
1151 return XPROCESS (process
)->inherit_coding_system_flag
;
1154 DEFUN ("set-process-query-on-exit-flag",
1155 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1157 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1158 If the second argument FLAG is non-nil, Emacs will query the user before
1159 exiting if PROCESS is running. */)
1161 register Lisp_Object process
, flag
;
1163 CHECK_PROCESS (process
);
1164 XPROCESS (process
)->kill_without_query
= Fnull (flag
);
1168 DEFUN ("process-query-on-exit-flag",
1169 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1171 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1173 register Lisp_Object process
;
1175 CHECK_PROCESS (process
);
1176 return Fnull (XPROCESS (process
)->kill_without_query
);
1179 #ifdef DATAGRAM_SOCKETS
1180 Lisp_Object
Fprocess_datagram_address ();
1183 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1185 doc
: /* Return the contact info of PROCESS; t for a real child.
1186 For a net connection, the value depends on the optional KEY arg.
1187 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1188 if KEY is t, the complete contact information for the connection is
1189 returned, else the specific value for the keyword KEY is returned.
1190 See `make-network-process' for a list of keywords. */)
1192 register Lisp_Object process
, key
;
1194 Lisp_Object contact
;
1196 CHECK_PROCESS (process
);
1197 contact
= XPROCESS (process
)->childp
;
1199 #ifdef DATAGRAM_SOCKETS
1200 if (DATAGRAM_CONN_P (process
)
1201 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1202 contact
= Fplist_put (contact
, QCremote
,
1203 Fprocess_datagram_address (process
));
1206 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1209 return Fcons (Fplist_get (contact
, QChost
),
1210 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1211 return Fplist_get (contact
, key
);
1214 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1216 doc
: /* Return the plist of PROCESS. */)
1218 register Lisp_Object process
;
1220 CHECK_PROCESS (process
);
1221 return XPROCESS (process
)->plist
;
1224 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1226 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1228 register Lisp_Object process
, plist
;
1230 CHECK_PROCESS (process
);
1233 XPROCESS (process
)->plist
= plist
;
1237 #if 0 /* Turned off because we don't currently record this info
1238 in the process. Perhaps add it. */
1239 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1240 doc
: /* Return the connection type of PROCESS.
1241 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1242 a socket connection. */)
1244 Lisp_Object process
;
1246 return XPROCESS (process
)->type
;
1251 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1253 doc
: /* Convert network ADDRESS from internal format to a string.
1254 A 4 or 5 element vector represents an IPv4 address (with port number).
1255 An 8 or 9 element vector represents an IPv6 address (with port number).
1256 If optional second argument OMIT-PORT is non-nil, don't include a port
1257 number in the string, even when present in ADDRESS.
1258 Returns nil if format of ADDRESS is invalid. */)
1259 (address
, omit_port
)
1260 Lisp_Object address
, omit_port
;
1265 if (STRINGP (address
)) /* AF_LOCAL */
1268 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1270 register struct Lisp_Vector
*p
= XVECTOR (address
);
1271 Lisp_Object args
[6];
1274 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1276 args
[0] = build_string ("%d.%d.%d.%d");
1279 else if (p
->size
== 5)
1281 args
[0] = build_string ("%d.%d.%d.%d:%d");
1284 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1286 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1289 else if (p
->size
== 9)
1291 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1297 for (i
= 0; i
< nargs
; i
++)
1298 args
[i
+1] = p
->contents
[i
];
1299 return Fformat (nargs
+1, args
);
1302 if (CONSP (address
))
1304 Lisp_Object args
[2];
1305 args
[0] = build_string ("<Family %d>");
1306 args
[1] = Fcar (address
);
1307 return Fformat (2, args
);
1316 list_processes_1 (query_only
)
1317 Lisp_Object query_only
;
1319 register Lisp_Object tail
, tem
;
1320 Lisp_Object proc
, minspace
, tem1
;
1321 register struct Lisp_Process
*p
;
1323 int w_proc
, w_buffer
, w_tty
;
1325 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1327 w_proc
= 4; /* Proc */
1328 w_buffer
= 6; /* Buffer */
1329 w_tty
= 0; /* Omit if no ttys */
1331 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1335 proc
= Fcdr (Fcar (tail
));
1336 p
= XPROCESS (proc
);
1337 if (NILP (p
->childp
))
1339 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1341 if (STRINGP (p
->name
)
1342 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1344 if (!NILP (p
->buffer
))
1346 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1347 w_buffer
= 8; /* (Killed) */
1348 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1351 if (STRINGP (p
->tty_name
)
1352 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1356 XSETFASTINT (i_status
, w_proc
+ 1);
1357 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1360 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1361 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1364 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1367 XSETFASTINT (minspace
, 1);
1369 set_buffer_internal (XBUFFER (Vstandard_output
));
1370 current_buffer
->undo_list
= Qt
;
1372 current_buffer
->truncate_lines
= Qt
;
1374 write_string ("Proc", -1);
1375 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1376 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1379 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1381 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1382 write_string ("\n", -1);
1384 write_string ("----", -1);
1385 Findent_to (i_status
, minspace
); write_string ("------", -1);
1386 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1389 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1391 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1392 write_string ("\n", -1);
1394 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1398 proc
= Fcdr (Fcar (tail
));
1399 p
= XPROCESS (proc
);
1400 if (NILP (p
->childp
))
1402 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1405 Finsert (1, &p
->name
);
1406 Findent_to (i_status
, minspace
);
1408 if (p
->raw_status_new
)
1411 if (CONSP (p
->status
))
1412 symbol
= XCAR (p
->status
);
1415 if (EQ (symbol
, Qsignal
))
1418 tem
= Fcar (Fcdr (p
->status
));
1420 if (XINT (tem
) < NSIG
)
1421 write_string (sys_errlist
[XINT (tem
)], -1);
1424 Fprinc (symbol
, Qnil
);
1426 else if (NETCONN1_P (p
))
1428 if (EQ (symbol
, Qexit
))
1429 write_string ("closed", -1);
1430 else if (EQ (p
->command
, Qt
))
1431 write_string ("stopped", -1);
1432 else if (EQ (symbol
, Qrun
))
1433 write_string ("open", -1);
1435 Fprinc (symbol
, Qnil
);
1438 Fprinc (symbol
, Qnil
);
1440 if (EQ (symbol
, Qexit
))
1443 tem
= Fcar (Fcdr (p
->status
));
1446 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1447 write_string (tembuf
, -1);
1451 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1454 Findent_to (i_buffer
, minspace
);
1455 if (NILP (p
->buffer
))
1456 insert_string ("(none)");
1457 else if (NILP (XBUFFER (p
->buffer
)->name
))
1458 insert_string ("(Killed)");
1460 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1464 Findent_to (i_tty
, minspace
);
1465 if (STRINGP (p
->tty_name
))
1466 Finsert (1, &p
->tty_name
);
1469 Findent_to (i_command
, minspace
);
1471 if (EQ (p
->status
, Qlisten
))
1473 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1474 if (INTEGERP (port
))
1475 port
= Fnumber_to_string (port
);
1477 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1478 sprintf (tembuf
, "(network %s server on %s)\n",
1479 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1480 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1481 insert_string (tembuf
);
1483 else if (NETCONN1_P (p
))
1485 /* For a local socket, there is no host name,
1486 so display service instead. */
1487 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1488 if (!STRINGP (host
))
1490 host
= Fplist_get (p
->childp
, QCservice
);
1491 if (INTEGERP (host
))
1492 host
= Fnumber_to_string (host
);
1495 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1496 sprintf (tembuf
, "(network %s connection to %s)\n",
1497 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1498 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1499 insert_string (tembuf
);
1511 insert_string (" ");
1513 insert_string ("\n");
1517 status_notify (NULL
);
1521 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1522 doc
: /* Display a list of all processes.
1523 If optional argument QUERY-ONLY is non-nil, only processes with
1524 the query-on-exit flag set will be listed.
1525 Any process listed as exited or signaled is actually eliminated
1526 after the listing is made. */)
1528 Lisp_Object query_only
;
1530 internal_with_output_to_temp_buffer ("*Process List*",
1531 list_processes_1
, query_only
);
1535 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1536 doc
: /* Return a list of all processes. */)
1539 return Fmapcar (Qcdr
, Vprocess_alist
);
1542 /* Starting asynchronous inferior processes. */
1544 static Lisp_Object
start_process_unwind ();
1546 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1547 doc
: /* Start a program in a subprocess. Return the process object for it.
1548 NAME is name for process. It is modified if necessary to make it unique.
1549 BUFFER is the buffer (or buffer name) to associate with the process.
1550 Process output goes at end of that buffer, unless you specify
1551 an output stream or filter function to handle the output.
1552 BUFFER may be also nil, meaning that this process is not associated
1554 PROGRAM is the program file name. It is searched for in PATH.
1555 Remaining arguments are strings to give program as arguments.
1557 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1560 register Lisp_Object
*args
;
1562 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1564 register unsigned char *new_argv
;
1567 register unsigned char **new_argv
;
1570 int count
= SPECPDL_INDEX ();
1574 buffer
= Fget_buffer_create (buffer
);
1576 /* Make sure that the child will be able to chdir to the current
1577 buffer's current directory, or its unhandled equivalent. We
1578 can't just have the child check for an error when it does the
1579 chdir, since it's in a vfork.
1581 We have to GCPRO around this because Fexpand_file_name and
1582 Funhandled_file_name_directory might call a file name handling
1583 function. The argument list is protected by the caller, so all
1584 we really have to worry about is buffer. */
1586 struct gcpro gcpro1
, gcpro2
;
1588 current_dir
= current_buffer
->directory
;
1590 GCPRO2 (buffer
, current_dir
);
1593 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1595 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1596 report_file_error ("Setting current directory",
1597 Fcons (current_buffer
->directory
, Qnil
));
1603 CHECK_STRING (name
);
1607 CHECK_STRING (program
);
1609 proc
= make_process (name
);
1610 /* If an error occurs and we can't start the process, we want to
1611 remove it from the process list. This means that each error
1612 check in create_process doesn't need to call remove_process
1613 itself; it's all taken care of here. */
1614 record_unwind_protect (start_process_unwind
, proc
);
1616 XPROCESS (proc
)->childp
= Qt
;
1617 XPROCESS (proc
)->plist
= Qnil
;
1618 XPROCESS (proc
)->buffer
= buffer
;
1619 XPROCESS (proc
)->sentinel
= Qnil
;
1620 XPROCESS (proc
)->filter
= Qnil
;
1621 XPROCESS (proc
)->filter_multibyte
1622 = buffer_defaults
.enable_multibyte_characters
;
1623 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1625 #ifdef ADAPTIVE_READ_BUFFERING
1626 XPROCESS (proc
)->adaptive_read_buffering
= Vprocess_adaptive_read_buffering
;
1629 /* Make the process marker point into the process buffer (if any). */
1630 if (BUFFERP (buffer
))
1631 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1632 BUF_ZV (XBUFFER (buffer
)),
1633 BUF_ZV_BYTE (XBUFFER (buffer
)));
1636 /* Decide coding systems for communicating with the process. Here
1637 we don't setup the structure coding_system nor pay attention to
1638 unibyte mode. They are done in create_process. */
1640 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1641 Lisp_Object coding_systems
= Qt
;
1642 Lisp_Object val
, *args2
;
1643 struct gcpro gcpro1
, gcpro2
;
1645 val
= Vcoding_system_for_read
;
1648 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1649 args2
[0] = Qstart_process
;
1650 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1651 GCPRO2 (proc
, current_dir
);
1652 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1654 if (CONSP (coding_systems
))
1655 val
= XCAR (coding_systems
);
1656 else if (CONSP (Vdefault_process_coding_system
))
1657 val
= XCAR (Vdefault_process_coding_system
);
1659 XPROCESS (proc
)->decode_coding_system
= val
;
1661 val
= Vcoding_system_for_write
;
1664 if (EQ (coding_systems
, Qt
))
1666 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1667 args2
[0] = Qstart_process
;
1668 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1669 GCPRO2 (proc
, current_dir
);
1670 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1673 if (CONSP (coding_systems
))
1674 val
= XCDR (coding_systems
);
1675 else if (CONSP (Vdefault_process_coding_system
))
1676 val
= XCDR (Vdefault_process_coding_system
);
1678 XPROCESS (proc
)->encode_coding_system
= val
;
1682 /* Make a one member argv with all args concatenated
1683 together separated by a blank. */
1684 len
= SBYTES (program
) + 2;
1685 for (i
= 3; i
< nargs
; i
++)
1689 len
+= SBYTES (tem
) + 1; /* count the blank */
1691 new_argv
= (unsigned char *) alloca (len
);
1692 strcpy (new_argv
, SDATA (program
));
1693 for (i
= 3; i
< nargs
; i
++)
1697 strcat (new_argv
, " ");
1698 strcat (new_argv
, SDATA (tem
));
1700 /* Need to add code here to check for program existence on VMS */
1703 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1705 /* If program file name is not absolute, search our path for it.
1706 Put the name we will really use in TEM. */
1707 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1708 && !(SCHARS (program
) > 1
1709 && IS_DEVICE_SEP (SREF (program
, 1))))
1711 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1714 GCPRO4 (name
, program
, buffer
, current_dir
);
1715 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1718 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1719 tem
= Fexpand_file_name (tem
, Qnil
);
1723 if (!NILP (Ffile_directory_p (program
)))
1724 error ("Specified program for new process is a directory");
1728 /* If program file name starts with /: for quoting a magic name,
1730 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1731 && SREF (tem
, 1) == ':')
1732 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1734 /* Encode the file name and put it in NEW_ARGV.
1735 That's where the child will use it to execute the program. */
1736 tem
= ENCODE_FILE (tem
);
1737 new_argv
[0] = SDATA (tem
);
1739 /* Here we encode arguments by the coding system used for sending
1740 data to the process. We don't support using different coding
1741 systems for encoding arguments and for encoding data sent to the
1744 for (i
= 3; i
< nargs
; i
++)
1748 if (STRING_MULTIBYTE (tem
))
1749 tem
= (code_convert_string_norecord
1750 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1751 new_argv
[i
- 2] = SDATA (tem
);
1753 new_argv
[i
- 2] = 0;
1754 #endif /* not VMS */
1756 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1757 XPROCESS (proc
)->decoding_carryover
= make_number (0);
1758 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1759 XPROCESS (proc
)->encoding_carryover
= make_number (0);
1761 XPROCESS (proc
)->inherit_coding_system_flag
1762 = (NILP (buffer
) || !inherit_process_coding_system
1765 create_process (proc
, (char **) new_argv
, current_dir
);
1767 return unbind_to (count
, proc
);
1770 /* This function is the unwind_protect form for Fstart_process. If
1771 PROC doesn't have its pid set, then we know someone has signaled
1772 an error and the process wasn't started successfully, so we should
1773 remove it from the process list. */
1775 start_process_unwind (proc
)
1778 if (!PROCESSP (proc
))
1781 /* Was PROC started successfully? */
1782 if (XPROCESS (proc
)->pid
<= 0)
1783 remove_process (proc
);
1789 create_process_1 (timer
)
1790 struct atimer
*timer
;
1792 /* Nothing to do. */
1796 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1799 /* Mimic blocking of signals on system V, which doesn't really have it. */
1801 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1802 int sigchld_deferred
;
1805 create_process_sigchld ()
1807 signal (SIGCHLD
, create_process_sigchld
);
1809 sigchld_deferred
= 1;
1815 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1817 create_process (process
, new_argv
, current_dir
)
1818 Lisp_Object process
;
1820 Lisp_Object current_dir
;
1822 int inchannel
, outchannel
;
1825 #ifdef POSIX_SIGNALS
1828 struct sigaction sigint_action
;
1829 struct sigaction sigquit_action
;
1831 struct sigaction sighup_action
;
1833 #else /* !POSIX_SIGNALS */
1836 SIGTYPE (*sigchld
)();
1839 #endif /* !POSIX_SIGNALS */
1840 /* Use volatile to protect variables from being clobbered by longjmp. */
1841 volatile int forkin
, forkout
;
1842 volatile int pty_flag
= 0;
1844 extern char **environ
;
1847 inchannel
= outchannel
= -1;
1850 if (!NILP (Vprocess_connection_type
))
1851 outchannel
= inchannel
= allocate_pty ();
1855 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1856 /* On most USG systems it does not work to open the pty's tty here,
1857 then close it and reopen it in the child. */
1859 /* Don't let this terminal become our controlling terminal
1860 (in case we don't have one). */
1861 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1863 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1866 report_file_error ("Opening pty", Qnil
);
1867 #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY)
1868 /* In the case that vfork is defined as fork, the parent process
1869 (Emacs) may send some data before the child process completes
1870 tty options setup. So we setup tty before forking. */
1871 child_setup_tty (forkout
);
1872 #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */
1874 forkin
= forkout
= -1;
1875 #endif /* not USG, or USG_SUBTTY_WORKS */
1879 #endif /* HAVE_PTYS */
1882 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1883 report_file_error ("Opening socketpair", Qnil
);
1884 outchannel
= inchannel
= sv
[0];
1885 forkout
= forkin
= sv
[1];
1887 #else /* not SKTPAIR */
1892 report_file_error ("Creating pipe", Qnil
);
1898 emacs_close (inchannel
);
1899 emacs_close (forkout
);
1900 report_file_error ("Creating pipe", Qnil
);
1905 #endif /* not SKTPAIR */
1908 /* Replaced by close_process_descs */
1909 set_exclusive_use (inchannel
);
1910 set_exclusive_use (outchannel
);
1913 /* Stride people say it's a mystery why this is needed
1914 as well as the O_NDELAY, but that it fails without this. */
1915 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1918 ioctl (inchannel
, FIONBIO
, &one
);
1923 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1924 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1927 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1928 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1932 /* Record this as an active process, with its channels.
1933 As a result, child_setup will close Emacs's side of the pipes. */
1934 chan_process
[inchannel
] = process
;
1935 XSETINT (XPROCESS (process
)->infd
, inchannel
);
1936 XSETINT (XPROCESS (process
)->outfd
, outchannel
);
1938 /* Previously we recorded the tty descriptor used in the subprocess.
1939 It was only used for getting the foreground tty process, so now
1940 we just reopen the device (see emacs_get_tty_pgrp) as this is
1941 more portable (see USG_SUBTTY_WORKS above). */
1943 XPROCESS (process
)->pty_flag
= (pty_flag
? Qt
: Qnil
);
1944 XPROCESS (process
)->status
= Qrun
;
1945 setup_process_coding_systems (process
);
1947 /* Delay interrupts until we have a chance to store
1948 the new fork's pid in its process structure */
1949 #ifdef POSIX_SIGNALS
1950 sigemptyset (&blocked
);
1952 sigaddset (&blocked
, SIGCHLD
);
1954 #ifdef HAVE_WORKING_VFORK
1955 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1956 this sets the parent's signal handlers as well as the child's.
1957 So delay all interrupts whose handlers the child might munge,
1958 and record the current handlers so they can be restored later. */
1959 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1960 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1962 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1964 #endif /* HAVE_WORKING_VFORK */
1965 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1966 #else /* !POSIX_SIGNALS */
1970 #else /* not BSD4_1 */
1971 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1972 sigsetmask (sigmask (SIGCHLD
));
1973 #else /* ordinary USG */
1975 sigchld_deferred
= 0;
1976 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
1978 #endif /* ordinary USG */
1979 #endif /* not BSD4_1 */
1980 #endif /* SIGCHLD */
1981 #endif /* !POSIX_SIGNALS */
1983 FD_SET (inchannel
, &input_wait_mask
);
1984 FD_SET (inchannel
, &non_keyboard_wait_mask
);
1985 if (inchannel
> max_process_desc
)
1986 max_process_desc
= inchannel
;
1988 /* Until we store the proper pid, enable sigchld_handler
1989 to recognize an unknown pid as standing for this process.
1990 It is very important not to let this `marker' value stay
1991 in the table after this function has returned; if it does
1992 it might cause call-process to hang and subsequent asynchronous
1993 processes to get their return values scrambled. */
1994 XPROCESS (process
)->pid
= -1;
1999 /* child_setup must clobber environ on systems with true vfork.
2000 Protect it from permanent change. */
2001 char **save_environ
= environ
;
2003 current_dir
= ENCODE_FILE (current_dir
);
2008 #endif /* not WINDOWSNT */
2010 int xforkin
= forkin
;
2011 int xforkout
= forkout
;
2013 #if 0 /* This was probably a mistake--it duplicates code later on,
2014 but fails to handle all the cases. */
2015 /* Make sure SIGCHLD is not blocked in the child. */
2016 sigsetmask (SIGEMPTYMASK
);
2019 /* Make the pty be the controlling terminal of the process. */
2021 /* First, disconnect its current controlling terminal. */
2023 /* We tried doing setsid only if pty_flag, but it caused
2024 process_set_signal to fail on SGI when using a pipe. */
2026 /* Make the pty's terminal the controlling terminal. */
2030 /* We ignore the return value
2031 because faith@cs.unc.edu says that is necessary on Linux. */
2032 ioctl (xforkin
, TIOCSCTTY
, 0);
2035 #else /* not HAVE_SETSID */
2037 /* It's very important to call setpgrp here and no time
2038 afterwards. Otherwise, we lose our controlling tty which
2039 is set when we open the pty. */
2042 #endif /* not HAVE_SETSID */
2043 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2044 if (pty_flag
&& xforkin
>= 0)
2047 tcgetattr (xforkin
, &t
);
2049 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2050 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2053 #if defined (NTTYDISC) && defined (TIOCSETD)
2054 if (pty_flag
&& xforkin
>= 0)
2056 /* Use new line discipline. */
2057 int ldisc
= NTTYDISC
;
2058 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2063 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2064 can do TIOCSPGRP only to the process's controlling tty. */
2067 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2068 I can't test it since I don't have 4.3. */
2069 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2070 ioctl (j
, TIOCNOTTY
, 0);
2073 /* In order to get a controlling terminal on some versions
2074 of BSD, it is necessary to put the process in pgrp 0
2075 before it opens the terminal. */
2083 #endif /* TIOCNOTTY */
2085 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2086 /*** There is a suggestion that this ought to be a
2087 conditional on TIOCSPGRP,
2088 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2089 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2090 that system does seem to need this code, even though
2091 both HAVE_SETSID and TIOCSCTTY are defined. */
2092 /* Now close the pty (if we had it open) and reopen it.
2093 This makes the pty the controlling terminal of the subprocess. */
2096 #ifdef SET_CHILD_PTY_PGRP
2097 int pgrp
= getpid ();
2100 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2103 emacs_close (xforkin
);
2104 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2108 emacs_write (1, "Couldn't open the pty terminal ", 31);
2109 emacs_write (1, pty_name
, strlen (pty_name
));
2110 emacs_write (1, "\n", 1);
2114 #ifdef SET_CHILD_PTY_PGRP
2115 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2116 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2119 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2121 #ifdef SETUP_SLAVE_PTY
2126 #endif /* SETUP_SLAVE_PTY */
2128 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2129 Now reenable it in the child, so it will die when we want it to. */
2131 signal (SIGHUP
, SIG_DFL
);
2133 #endif /* HAVE_PTYS */
2135 signal (SIGINT
, SIG_DFL
);
2136 signal (SIGQUIT
, SIG_DFL
);
2138 /* Stop blocking signals in the child. */
2139 #ifdef POSIX_SIGNALS
2140 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2141 #else /* !POSIX_SIGNALS */
2145 #else /* not BSD4_1 */
2146 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2147 sigsetmask (SIGEMPTYMASK
);
2148 #else /* ordinary USG */
2150 signal (SIGCHLD
, sigchld
);
2152 #endif /* ordinary USG */
2153 #endif /* not BSD4_1 */
2154 #endif /* SIGCHLD */
2155 #endif /* !POSIX_SIGNALS */
2157 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2159 child_setup_tty (xforkout
);
2160 #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */
2162 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2163 new_argv
, 1, current_dir
);
2164 #else /* not WINDOWSNT */
2165 child_setup (xforkin
, xforkout
, xforkout
,
2166 new_argv
, 1, current_dir
);
2167 #endif /* not WINDOWSNT */
2169 environ
= save_environ
;
2174 /* This runs in the Emacs process. */
2178 emacs_close (forkin
);
2179 if (forkin
!= forkout
&& forkout
>= 0)
2180 emacs_close (forkout
);
2184 /* vfork succeeded. */
2185 XPROCESS (process
)->pid
= pid
;
2188 register_child (pid
, inchannel
);
2189 #endif /* WINDOWSNT */
2191 /* If the subfork execv fails, and it exits,
2192 this close hangs. I don't know why.
2193 So have an interrupt jar it loose. */
2195 struct atimer
*timer
;
2199 EMACS_SET_SECS_USECS (offset
, 1, 0);
2200 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2203 emacs_close (forkin
);
2205 cancel_atimer (timer
);
2209 if (forkin
!= forkout
&& forkout
>= 0)
2210 emacs_close (forkout
);
2214 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2217 XPROCESS (process
)->tty_name
= Qnil
;
2220 /* Restore the signal state whether vfork succeeded or not.
2221 (We will signal an error, below, if it failed.) */
2222 #ifdef POSIX_SIGNALS
2223 #ifdef HAVE_WORKING_VFORK
2224 /* Restore the parent's signal handlers. */
2225 sigaction (SIGINT
, &sigint_action
, 0);
2226 sigaction (SIGQUIT
, &sigquit_action
, 0);
2228 sigaction (SIGHUP
, &sighup_action
, 0);
2230 #endif /* HAVE_WORKING_VFORK */
2231 /* Stop blocking signals in the parent. */
2232 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2233 #else /* !POSIX_SIGNALS */
2237 #else /* not BSD4_1 */
2238 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2239 sigsetmask (SIGEMPTYMASK
);
2240 #else /* ordinary USG */
2242 signal (SIGCHLD
, sigchld
);
2243 /* Now really handle any of these signals
2244 that came in during this function. */
2245 if (sigchld_deferred
)
2246 kill (getpid (), SIGCHLD
);
2248 #endif /* ordinary USG */
2249 #endif /* not BSD4_1 */
2250 #endif /* SIGCHLD */
2251 #endif /* !POSIX_SIGNALS */
2253 /* Now generate the error if vfork failed. */
2255 report_file_error ("Doing vfork", Qnil
);
2257 #endif /* not VMS */
2262 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2263 The address family of sa is not included in the result. */
2266 conv_sockaddr_to_lisp (sa
, len
)
2267 struct sockaddr
*sa
;
2270 Lisp_Object address
;
2273 register struct Lisp_Vector
*p
;
2275 switch (sa
->sa_family
)
2279 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2280 len
= sizeof (sin
->sin_addr
) + 1;
2281 address
= Fmake_vector (make_number (len
), Qnil
);
2282 p
= XVECTOR (address
);
2283 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2284 cp
= (unsigned char *)&sin
->sin_addr
;
2290 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2291 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2292 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2293 address
= Fmake_vector (make_number (len
), Qnil
);
2294 p
= XVECTOR (address
);
2295 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2296 for (i
= 0; i
< len
; i
++)
2297 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2301 #ifdef HAVE_LOCAL_SOCKETS
2304 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2305 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2306 if (sockun
->sun_path
[i
] == 0)
2308 return make_unibyte_string (sockun
->sun_path
, i
);
2312 len
-= sizeof (sa
->sa_family
);
2313 address
= Fcons (make_number (sa
->sa_family
),
2314 Fmake_vector (make_number (len
), Qnil
));
2315 p
= XVECTOR (XCDR (address
));
2316 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2322 p
->contents
[i
++] = make_number (*cp
++);
2328 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2331 get_lisp_to_sockaddr_size (address
, familyp
)
2332 Lisp_Object address
;
2335 register struct Lisp_Vector
*p
;
2337 if (VECTORP (address
))
2339 p
= XVECTOR (address
);
2343 return sizeof (struct sockaddr_in
);
2346 else if (p
->size
== 9)
2348 *familyp
= AF_INET6
;
2349 return sizeof (struct sockaddr_in6
);
2353 #ifdef HAVE_LOCAL_SOCKETS
2354 else if (STRINGP (address
))
2356 *familyp
= AF_LOCAL
;
2357 return sizeof (struct sockaddr_un
);
2360 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2362 struct sockaddr
*sa
;
2363 *familyp
= XINT (XCAR (address
));
2364 p
= XVECTOR (XCDR (address
));
2365 return p
->size
+ sizeof (sa
->sa_family
);
2370 /* Convert an address object (vector or string) to an internal sockaddr.
2372 The address format has been basically validated by
2373 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2374 it could have come from user data. So if FAMILY is not valid,
2375 we return after zeroing *SA. */
2378 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2380 Lisp_Object address
;
2381 struct sockaddr
*sa
;
2384 register struct Lisp_Vector
*p
;
2385 register unsigned char *cp
= NULL
;
2390 if (VECTORP (address
))
2392 p
= XVECTOR (address
);
2393 if (family
== AF_INET
)
2395 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2396 len
= sizeof (sin
->sin_addr
) + 1;
2397 i
= XINT (p
->contents
[--len
]);
2398 sin
->sin_port
= htons (i
);
2399 cp
= (unsigned char *)&sin
->sin_addr
;
2400 sa
->sa_family
= family
;
2403 else if (family
== AF_INET6
)
2405 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2406 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2407 len
= sizeof (sin6
->sin6_addr
) + 1;
2408 i
= XINT (p
->contents
[--len
]);
2409 sin6
->sin6_port
= htons (i
);
2410 for (i
= 0; i
< len
; i
++)
2411 if (INTEGERP (p
->contents
[i
]))
2413 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2416 sa
->sa_family
= family
;
2421 else if (STRINGP (address
))
2423 #ifdef HAVE_LOCAL_SOCKETS
2424 if (family
== AF_LOCAL
)
2426 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2427 cp
= SDATA (address
);
2428 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2429 sockun
->sun_path
[i
] = *cp
++;
2430 sa
->sa_family
= family
;
2437 p
= XVECTOR (XCDR (address
));
2438 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2441 for (i
= 0; i
< len
; i
++)
2442 if (INTEGERP (p
->contents
[i
]))
2443 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2446 #ifdef DATAGRAM_SOCKETS
2447 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2449 doc
: /* Get the current datagram address associated with PROCESS. */)
2451 Lisp_Object process
;
2455 CHECK_PROCESS (process
);
2457 if (!DATAGRAM_CONN_P (process
))
2460 channel
= XINT (XPROCESS (process
)->infd
);
2461 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2462 datagram_address
[channel
].len
);
2465 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2467 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2468 Returns nil upon error setting address, ADDRESS otherwise. */)
2470 Lisp_Object process
, address
;
2475 CHECK_PROCESS (process
);
2477 if (!DATAGRAM_CONN_P (process
))
2480 channel
= XINT (XPROCESS (process
)->infd
);
2482 len
= get_lisp_to_sockaddr_size (address
, &family
);
2483 if (datagram_address
[channel
].len
!= len
)
2485 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2491 static struct socket_options
{
2492 /* The name of this option. Should be lowercase version of option
2493 name without SO_ prefix. */
2495 /* Option level SOL_... */
2497 /* Option number SO_... */
2499 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2500 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2501 } socket_options
[] =
2503 #ifdef SO_BINDTODEVICE
2504 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2507 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2510 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2513 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2516 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2519 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2522 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2525 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2527 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2530 /* Set option OPT to value VAL on socket S.
2532 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2533 Signals an error if setting a known option fails.
2537 set_socket_option (s
, opt
, val
)
2539 Lisp_Object opt
, val
;
2542 struct socket_options
*sopt
;
2547 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2548 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2549 if (strcmp (name
, sopt
->name
) == 0)
2552 switch (sopt
->opttype
)
2557 optval
= NILP (val
) ? 0 : 1;
2558 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2559 &optval
, sizeof (optval
));
2567 optval
= XINT (val
);
2569 error ("Bad option value for %s", name
);
2570 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2571 &optval
, sizeof (optval
));
2575 #ifdef SO_BINDTODEVICE
2578 char devname
[IFNAMSIZ
+1];
2580 /* This is broken, at least in the Linux 2.4 kernel.
2581 To unbind, the arg must be a zero integer, not the empty string.
2582 This should work on all systems. KFS. 2003-09-23. */
2583 bzero (devname
, sizeof devname
);
2586 char *arg
= (char *) SDATA (val
);
2587 int len
= min (strlen (arg
), IFNAMSIZ
);
2588 bcopy (arg
, devname
, len
);
2590 else if (!NILP (val
))
2591 error ("Bad option value for %s", name
);
2592 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2601 struct linger linger
;
2604 linger
.l_linger
= 0;
2606 linger
.l_linger
= XINT (val
);
2608 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2609 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2610 &linger
, sizeof (linger
));
2620 report_file_error ("Cannot set network option",
2621 Fcons (opt
, Fcons (val
, Qnil
)));
2622 return (1 << sopt
->optbit
);
2626 DEFUN ("set-network-process-option",
2627 Fset_network_process_option
, Sset_network_process_option
,
2629 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2630 See `make-network-process' for a list of options and values.
2631 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2632 OPTION is not a supported option, return nil instead; otherwise return t. */)
2633 (process
, option
, value
, no_error
)
2634 Lisp_Object process
, option
, value
;
2635 Lisp_Object no_error
;
2638 struct Lisp_Process
*p
;
2640 CHECK_PROCESS (process
);
2641 p
= XPROCESS (process
);
2642 if (!NETCONN1_P (p
))
2643 error ("Process is not a network process");
2647 error ("Process is not running");
2649 if (set_socket_option (s
, option
, value
))
2651 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2655 if (NILP (no_error
))
2656 error ("Unknown or unsupported option");
2662 /* A version of request_sigio suitable for a record_unwind_protect. */
2665 unwind_request_sigio (dummy
)
2668 if (interrupt_input
)
2673 /* Create a network stream/datagram client/server process. Treated
2674 exactly like a normal process when reading and writing. Primary
2675 differences are in status display and process deletion. A network
2676 connection has no PID; you cannot signal it. All you can do is
2677 stop/continue it and deactivate/close it via delete-process */
2679 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2681 doc
: /* Create and return a network server or client process.
2683 In Emacs, network connections are represented by process objects, so
2684 input and output work as for subprocesses and `delete-process' closes
2685 a network connection. However, a network process has no process id,
2686 it cannot be signaled, and the status codes are different from normal
2689 Arguments are specified as keyword/argument pairs. The following
2690 arguments are defined:
2692 :name NAME -- NAME is name for process. It is modified if necessary
2695 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2696 with the process. Process output goes at end of that buffer, unless
2697 you specify an output stream or filter function to handle the output.
2698 BUFFER may be also nil, meaning that this process is not associated
2701 :host HOST -- HOST is name of the host to connect to, or its IP
2702 address. The symbol `local' specifies the local host. If specified
2703 for a server process, it must be a valid name or address for the local
2704 host, and only clients connecting to that address will be accepted.
2706 :service SERVICE -- SERVICE is name of the service desired, or an
2707 integer specifying a port number to connect to. If SERVICE is t,
2708 a random port number is selected for the server.
2710 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2711 stream type connection, `datagram' creates a datagram type connection.
2713 :family FAMILY -- FAMILY is the address (and protocol) family for the
2714 service specified by HOST and SERVICE. The default (nil) is to use
2715 whatever address family (IPv4 or IPv6) that is defined for the host
2716 and port number specified by HOST and SERVICE. Other address families
2718 local -- for a local (i.e. UNIX) address specified by SERVICE.
2719 ipv4 -- use IPv4 address family only.
2720 ipv6 -- use IPv6 address family only.
2722 :local ADDRESS -- ADDRESS is the local address used for the connection.
2723 This parameter is ignored when opening a client process. When specified
2724 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2726 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2727 connection. This parameter is ignored when opening a stream server
2728 process. For a datagram server process, it specifies the initial
2729 setting of the remote datagram address. When specified for a client
2730 process, the FAMILY, HOST, and SERVICE args are ignored.
2732 The format of ADDRESS depends on the address family:
2733 - An IPv4 address is represented as an vector of integers [A B C D P]
2734 corresponding to numeric IP address A.B.C.D and port number P.
2735 - A local address is represented as a string with the address in the
2736 local address space.
2737 - An "unsupported family" address is represented by a cons (F . AV)
2738 where F is the family number and AV is a vector containing the socket
2739 address data with one element per address data byte. Do not rely on
2740 this format in portable code, as it may depend on implementation
2741 defined constants, data sizes, and data structure alignment.
2743 :coding CODING -- If CODING is a symbol, it specifies the coding
2744 system used for both reading and writing for this process. If CODING
2745 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2746 ENCODING is used for writing.
2748 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2749 return without waiting for the connection to complete; instead, the
2750 sentinel function will be called with second arg matching "open" (if
2751 successful) or "failed" when the connect completes. Default is to use
2752 a blocking connect (i.e. wait) for stream type connections.
2754 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2755 running when Emacs is exited.
2757 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2758 In the stopped state, a server process does not accept new
2759 connections, and a client process does not handle incoming traffic.
2760 The stopped state is cleared by `continue-process' and set by
2763 :filter FILTER -- Install FILTER as the process filter.
2765 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2766 process filter are multibyte, otherwise they are unibyte.
2767 If this keyword is not specified, the strings are multibyte iff
2768 `default-enable-multibyte-characters' is non-nil.
2770 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2772 :log LOG -- Install LOG as the server process log function. This
2773 function is called when the server accepts a network connection from a
2774 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2775 is the server process, CLIENT is the new process for the connection,
2776 and MESSAGE is a string.
2778 :plist PLIST -- Install PLIST as the new process' initial plist.
2780 :server QLEN -- if QLEN is non-nil, create a server process for the
2781 specified FAMILY, SERVICE, and connection type (stream or datagram).
2782 If QLEN is an integer, it is used as the max. length of the server's
2783 pending connection queue (also known as the backlog); the default
2784 queue length is 5. Default is to create a client process.
2786 The following network options can be specified for this connection:
2788 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2789 :dontroute BOOL -- Only send to directly connected hosts.
2790 :keepalive BOOL -- Send keep-alive messages on network stream.
2791 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2792 :oobinline BOOL -- Place out-of-band data in receive data stream.
2793 :priority INT -- Set protocol defined priority for sent packets.
2794 :reuseaddr BOOL -- Allow reusing a recently used local address
2795 (this is allowed by default for a server process).
2796 :bindtodevice NAME -- bind to interface NAME. Using this may require
2797 special privileges on some systems.
2799 Consult the relevant system programmer's manual pages for more
2800 information on using these options.
2803 A server process will listen for and accept connections from clients.
2804 When a client connection is accepted, a new network process is created
2805 for the connection with the following parameters:
2807 - The client's process name is constructed by concatenating the server
2808 process' NAME and a client identification string.
2809 - If the FILTER argument is non-nil, the client process will not get a
2810 separate process buffer; otherwise, the client's process buffer is a newly
2811 created buffer named after the server process' BUFFER name or process
2812 NAME concatenated with the client identification string.
2813 - The connection type and the process filter and sentinel parameters are
2814 inherited from the server process' TYPE, FILTER and SENTINEL.
2815 - The client process' contact info is set according to the client's
2816 addressing information (typically an IP address and a port number).
2817 - The client process' plist is initialized from the server's plist.
2819 Notice that the FILTER and SENTINEL args are never used directly by
2820 the server process. Also, the BUFFER argument is not used directly by
2821 the server process, but via the optional :log function, accepted (and
2822 failed) connections may be logged in the server process' buffer.
2824 The original argument list, modified with the actual connection
2825 information, is available via the `process-contact' function.
2827 usage: (make-network-process &rest ARGS) */)
2833 Lisp_Object contact
;
2834 struct Lisp_Process
*p
;
2835 #ifdef HAVE_GETADDRINFO
2836 struct addrinfo ai
, *res
, *lres
;
2837 struct addrinfo hints
;
2838 char *portstring
, portbuf
[128];
2839 #else /* HAVE_GETADDRINFO */
2840 struct _emacs_addrinfo
2846 struct sockaddr
*ai_addr
;
2847 struct _emacs_addrinfo
*ai_next
;
2849 #endif /* HAVE_GETADDRINFO */
2850 struct sockaddr_in address_in
;
2851 #ifdef HAVE_LOCAL_SOCKETS
2852 struct sockaddr_un address_un
;
2857 int s
= -1, outch
, inch
;
2858 struct gcpro gcpro1
;
2859 int count
= SPECPDL_INDEX ();
2861 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2863 Lisp_Object name
, buffer
, host
, service
, address
;
2864 Lisp_Object filter
, sentinel
;
2865 int is_non_blocking_client
= 0;
2866 int is_server
= 0, backlog
= 5;
2873 /* Save arguments for process-contact and clone-process. */
2874 contact
= Flist (nargs
, args
);
2878 /* Ensure socket support is loaded if available. */
2879 init_winsock (TRUE
);
2882 /* :type TYPE (nil: stream, datagram */
2883 tem
= Fplist_get (contact
, QCtype
);
2885 socktype
= SOCK_STREAM
;
2886 #ifdef DATAGRAM_SOCKETS
2887 else if (EQ (tem
, Qdatagram
))
2888 socktype
= SOCK_DGRAM
;
2891 error ("Unsupported connection type");
2894 tem
= Fplist_get (contact
, QCserver
);
2897 /* Don't support network sockets when non-blocking mode is
2898 not available, since a blocked Emacs is not useful. */
2899 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2900 error ("Network servers not supported");
2904 backlog
= XINT (tem
);
2908 /* Make QCaddress an alias for :local (server) or :remote (client). */
2909 QCaddress
= is_server
? QClocal
: QCremote
;
2912 if (!is_server
&& socktype
== SOCK_STREAM
2913 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2915 #ifndef NON_BLOCKING_CONNECT
2916 error ("Non-blocking connect not supported");
2918 is_non_blocking_client
= 1;
2922 name
= Fplist_get (contact
, QCname
);
2923 buffer
= Fplist_get (contact
, QCbuffer
);
2924 filter
= Fplist_get (contact
, QCfilter
);
2925 sentinel
= Fplist_get (contact
, QCsentinel
);
2927 CHECK_STRING (name
);
2930 /* Let's handle TERM before things get complicated ... */
2931 host
= Fplist_get (contact
, QChost
);
2932 CHECK_STRING (host
);
2934 service
= Fplist_get (contact
, QCservice
);
2935 if (INTEGERP (service
))
2936 port
= htons ((unsigned short) XINT (service
));
2939 struct servent
*svc_info
;
2940 CHECK_STRING (service
);
2941 svc_info
= getservbyname (SDATA (service
), "tcp");
2943 error ("Unknown service: %s", SDATA (service
));
2944 port
= svc_info
->s_port
;
2947 s
= connect_server (0);
2949 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2950 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2951 send_command (s
, C_DUMB
, 1, 0);
2953 #else /* not TERM */
2955 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2956 ai
.ai_socktype
= socktype
;
2961 /* :local ADDRESS or :remote ADDRESS */
2962 address
= Fplist_get (contact
, QCaddress
);
2963 if (!NILP (address
))
2965 host
= service
= Qnil
;
2967 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2968 error ("Malformed :address");
2969 ai
.ai_family
= family
;
2970 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2971 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2975 /* :family FAMILY -- nil (for Inet), local, or integer. */
2976 tem
= Fplist_get (contact
, QCfamily
);
2979 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
2985 #ifdef HAVE_LOCAL_SOCKETS
2986 else if (EQ (tem
, Qlocal
))
2990 else if (EQ (tem
, Qipv6
))
2993 else if (EQ (tem
, Qipv4
))
2995 else if (INTEGERP (tem
))
2996 family
= XINT (tem
);
2998 error ("Unknown address family");
3000 ai
.ai_family
= family
;
3002 /* :service SERVICE -- string, integer (port number), or t (random port). */
3003 service
= Fplist_get (contact
, QCservice
);
3005 #ifdef HAVE_LOCAL_SOCKETS
3006 if (family
== AF_LOCAL
)
3008 /* Host is not used. */
3010 CHECK_STRING (service
);
3011 bzero (&address_un
, sizeof address_un
);
3012 address_un
.sun_family
= AF_LOCAL
;
3013 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3014 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3015 ai
.ai_addrlen
= sizeof address_un
;
3020 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3021 host
= Fplist_get (contact
, QChost
);
3024 if (EQ (host
, Qlocal
))
3025 host
= build_string ("localhost");
3026 CHECK_STRING (host
);
3029 /* Slow down polling to every ten seconds.
3030 Some kernels have a bug which causes retrying connect to fail
3031 after a connect. Polling can interfere with gethostbyname too. */
3032 #ifdef POLL_FOR_INPUT
3033 if (socktype
== SOCK_STREAM
)
3035 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3036 bind_polling_period (10);
3040 #ifdef HAVE_GETADDRINFO
3041 /* If we have a host, use getaddrinfo to resolve both host and service.
3042 Otherwise, use getservbyname to lookup the service. */
3046 /* SERVICE can either be a string or int.
3047 Convert to a C string for later use by getaddrinfo. */
3048 if (EQ (service
, Qt
))
3050 else if (INTEGERP (service
))
3052 sprintf (portbuf
, "%ld", (long) XINT (service
));
3053 portstring
= portbuf
;
3057 CHECK_STRING (service
);
3058 portstring
= SDATA (service
);
3063 memset (&hints
, 0, sizeof (hints
));
3065 hints
.ai_family
= family
;
3066 hints
.ai_socktype
= socktype
;
3067 hints
.ai_protocol
= 0;
3068 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3070 #ifdef HAVE_GAI_STRERROR
3071 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3073 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3079 #endif /* HAVE_GETADDRINFO */
3081 /* We end up here if getaddrinfo is not defined, or in case no hostname
3082 has been specified (e.g. for a local server process). */
3084 if (EQ (service
, Qt
))
3086 else if (INTEGERP (service
))
3087 port
= htons ((unsigned short) XINT (service
));
3090 struct servent
*svc_info
;
3091 CHECK_STRING (service
);
3092 svc_info
= getservbyname (SDATA (service
),
3093 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3095 error ("Unknown service: %s", SDATA (service
));
3096 port
= svc_info
->s_port
;
3099 bzero (&address_in
, sizeof address_in
);
3100 address_in
.sin_family
= family
;
3101 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3102 address_in
.sin_port
= port
;
3104 #ifndef HAVE_GETADDRINFO
3107 struct hostent
*host_info_ptr
;
3109 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3110 as it may `hang' Emacs for a very long time. */
3113 host_info_ptr
= gethostbyname (SDATA (host
));
3118 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3119 host_info_ptr
->h_length
);
3120 family
= host_info_ptr
->h_addrtype
;
3121 address_in
.sin_family
= family
;
3124 /* Attempt to interpret host as numeric inet address */
3126 IN_ADDR numeric_addr
;
3127 numeric_addr
= inet_addr ((char *) SDATA (host
));
3128 if (NUMERIC_ADDR_ERROR
)
3129 error ("Unknown host \"%s\"", SDATA (host
));
3131 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3132 sizeof (address_in
.sin_addr
));
3136 #endif /* not HAVE_GETADDRINFO */
3138 ai
.ai_family
= family
;
3139 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3140 ai
.ai_addrlen
= sizeof address_in
;
3144 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3145 when connect is interrupted. So let's not let it get interrupted.
3146 Note we do not turn off polling, because polling is only used
3147 when not interrupt_input, and thus not normally used on the systems
3148 which have this bug. On systems which use polling, there's no way
3149 to quit if polling is turned off. */
3151 && !is_server
&& socktype
== SOCK_STREAM
)
3153 /* Comment from KFS: The original open-network-stream code
3154 didn't unwind protect this, but it seems like the proper
3155 thing to do. In any case, I don't see how it could harm to
3156 do this -- and it makes cleanup (using unbind_to) easier. */
3157 record_unwind_protect (unwind_request_sigio
, Qnil
);
3161 /* Do this in case we never enter the for-loop below. */
3162 count1
= SPECPDL_INDEX ();
3165 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3171 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3178 #ifdef DATAGRAM_SOCKETS
3179 if (!is_server
&& socktype
== SOCK_DGRAM
)
3181 #endif /* DATAGRAM_SOCKETS */
3183 #ifdef NON_BLOCKING_CONNECT
3184 if (is_non_blocking_client
)
3187 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3189 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3201 /* Make us close S if quit. */
3202 record_unwind_protect (close_file_unwind
, make_number (s
));
3204 /* Parse network options in the arg list.
3205 We simply ignore anything which isn't a known option (including other keywords).
3206 An error is signalled if setting a known option fails. */
3207 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3208 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3212 /* Configure as a server socket. */
3214 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3215 explicit :reuseaddr key to override this. */
3216 #ifdef HAVE_LOCAL_SOCKETS
3217 if (family
!= AF_LOCAL
)
3219 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3222 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3223 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3226 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3227 report_file_error ("Cannot bind server socket", Qnil
);
3229 #ifdef HAVE_GETSOCKNAME
3230 if (EQ (service
, Qt
))
3232 struct sockaddr_in sa1
;
3233 int len1
= sizeof (sa1
);
3234 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3236 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3237 service
= make_number (ntohs (sa1
.sin_port
));
3238 contact
= Fplist_put (contact
, QCservice
, service
);
3243 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3244 report_file_error ("Cannot listen on server socket", Qnil
);
3252 /* This turns off all alarm-based interrupts; the
3253 bind_polling_period call above doesn't always turn all the
3254 short-interval ones off, especially if interrupt_input is
3257 It'd be nice to be able to control the connect timeout
3258 though. Would non-blocking connect calls be portable?
3260 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3262 turn_on_atimers (0);
3264 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3267 turn_on_atimers (1);
3269 if (ret
== 0 || xerrno
== EISCONN
)
3271 /* The unwind-protect will be discarded afterwards.
3272 Likewise for immediate_quit. */
3276 #ifdef NON_BLOCKING_CONNECT
3278 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3282 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3290 /* Discard the unwind protect closing S. */
3291 specpdl_ptr
= specpdl
+ count1
;
3295 if (xerrno
== EINTR
)
3301 #ifdef DATAGRAM_SOCKETS
3302 if (socktype
== SOCK_DGRAM
)
3304 if (datagram_address
[s
].sa
)
3306 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3307 datagram_address
[s
].len
= lres
->ai_addrlen
;
3311 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3312 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3315 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3316 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3317 conv_lisp_to_sockaddr (rfamily
, remote
,
3318 datagram_address
[s
].sa
, rlen
);
3322 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3325 contact
= Fplist_put (contact
, QCaddress
,
3326 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3327 #ifdef HAVE_GETSOCKNAME
3330 struct sockaddr_in sa1
;
3331 int len1
= sizeof (sa1
);
3332 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3333 contact
= Fplist_put (contact
, QClocal
,
3334 conv_sockaddr_to_lisp (&sa1
, len1
));
3341 #ifdef HAVE_GETADDRINFO
3350 /* Discard the unwind protect for closing S, if any. */
3351 specpdl_ptr
= specpdl
+ count1
;
3353 /* Unwind bind_polling_period and request_sigio. */
3354 unbind_to (count
, Qnil
);
3358 /* If non-blocking got this far - and failed - assume non-blocking is
3359 not supported after all. This is probably a wrong assumption, but
3360 the normal blocking calls to open-network-stream handles this error
3362 if (is_non_blocking_client
)
3367 report_file_error ("make server process failed", contact
);
3369 report_file_error ("make client process failed", contact
);
3372 #endif /* not TERM */
3378 buffer
= Fget_buffer_create (buffer
);
3379 proc
= make_process (name
);
3381 chan_process
[inch
] = proc
;
3384 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3387 fcntl (inch
, F_SETFL
, O_NDELAY
);
3391 p
= XPROCESS (proc
);
3393 p
->childp
= contact
;
3394 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3397 p
->sentinel
= sentinel
;
3399 p
->filter_multibyte
= buffer_defaults
.enable_multibyte_characters
;
3400 /* Override the above only if :filter-multibyte is specified. */
3401 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3402 p
->filter_multibyte
= Fplist_get (contact
, QCfilter_multibyte
);
3403 p
->log
= Fplist_get (contact
, QClog
);
3404 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3405 p
->kill_without_query
= Qt
;
3406 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3409 XSETINT (p
->infd
, inch
);
3410 XSETINT (p
->outfd
, outch
);
3411 if (is_server
&& socktype
== SOCK_STREAM
)
3412 p
->status
= Qlisten
;
3414 /* Make the process marker point into the process buffer (if any). */
3415 if (BUFFERP (buffer
))
3416 set_marker_both (p
->mark
, buffer
,
3417 BUF_ZV (XBUFFER (buffer
)),
3418 BUF_ZV_BYTE (XBUFFER (buffer
)));
3420 #ifdef NON_BLOCKING_CONNECT
3421 if (is_non_blocking_client
)
3423 /* We may get here if connect did succeed immediately. However,
3424 in that case, we still need to signal this like a non-blocking
3426 p
->status
= Qconnect
;
3427 if (!FD_ISSET (inch
, &connect_wait_mask
))
3429 FD_SET (inch
, &connect_wait_mask
);
3430 num_pending_connects
++;
3435 /* A server may have a client filter setting of Qt, but it must
3436 still listen for incoming connects unless it is stopped. */
3437 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3438 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3440 FD_SET (inch
, &input_wait_mask
);
3441 FD_SET (inch
, &non_keyboard_wait_mask
);
3444 if (inch
> max_process_desc
)
3445 max_process_desc
= inch
;
3447 tem
= Fplist_member (contact
, QCcoding
);
3448 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3449 tem
= Qnil
; /* No error message (too late!). */
3452 /* Setup coding systems for communicating with the network stream. */
3453 struct gcpro gcpro1
;
3454 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3455 Lisp_Object coding_systems
= Qt
;
3456 Lisp_Object args
[5], val
;
3460 val
= XCAR (XCDR (tem
));
3464 else if (!NILP (Vcoding_system_for_read
))
3465 val
= Vcoding_system_for_read
;
3466 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3467 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3468 /* We dare not decode end-of-line format by setting VAL to
3469 Qraw_text, because the existing Emacs Lisp libraries
3470 assume that they receive bare code including a sequene of
3475 if (NILP (host
) || NILP (service
))
3476 coding_systems
= Qnil
;
3479 args
[0] = Qopen_network_stream
, args
[1] = name
,
3480 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3482 coding_systems
= Ffind_operation_coding_system (5, args
);
3485 if (CONSP (coding_systems
))
3486 val
= XCAR (coding_systems
);
3487 else if (CONSP (Vdefault_process_coding_system
))
3488 val
= XCAR (Vdefault_process_coding_system
);
3492 p
->decode_coding_system
= val
;
3496 val
= XCAR (XCDR (tem
));
3500 else if (!NILP (Vcoding_system_for_write
))
3501 val
= Vcoding_system_for_write
;
3502 else if (NILP (current_buffer
->enable_multibyte_characters
))
3506 if (EQ (coding_systems
, Qt
))
3508 if (NILP (host
) || NILP (service
))
3509 coding_systems
= Qnil
;
3512 args
[0] = Qopen_network_stream
, args
[1] = name
,
3513 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3515 coding_systems
= Ffind_operation_coding_system (5, args
);
3519 if (CONSP (coding_systems
))
3520 val
= XCDR (coding_systems
);
3521 else if (CONSP (Vdefault_process_coding_system
))
3522 val
= XCDR (Vdefault_process_coding_system
);
3526 p
->encode_coding_system
= val
;
3528 setup_process_coding_systems (proc
);
3530 p
->decoding_buf
= make_uninit_string (0);
3531 p
->decoding_carryover
= make_number (0);
3532 p
->encoding_buf
= make_uninit_string (0);
3533 p
->encoding_carryover
= make_number (0);
3535 p
->inherit_coding_system_flag
3536 = (!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
3542 #endif /* HAVE_SOCKETS */
3545 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3548 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3549 doc
: /* Return an alist of all network interfaces and their network address.
3550 Each element is a cons, the car of which is a string containing the
3551 interface name, and the cdr is the network address in internal
3552 format; see the description of ADDRESS in `make-network-process'. */)
3555 struct ifconf ifconf
;
3556 struct ifreq
*ifreqs
= NULL
;
3561 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3567 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3568 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3575 ifconf
.ifc_len
= buf_size
;
3576 ifconf
.ifc_req
= ifreqs
;
3577 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3583 if (ifconf
.ifc_len
== buf_size
)
3587 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3590 while (--ifaces
>= 0)
3592 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3593 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3594 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3596 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3597 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3598 res
= Fcons (Fcons (build_string (namebuf
),
3599 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3600 sizeof (struct sockaddr
))),
3606 #endif /* SIOCGIFCONF */
3608 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3615 static struct ifflag_def ifflag_table
[] = {
3619 #ifdef IFF_BROADCAST
3620 { IFF_BROADCAST
, "broadcast" },
3623 { IFF_DEBUG
, "debug" },
3626 { IFF_LOOPBACK
, "loopback" },
3628 #ifdef IFF_POINTOPOINT
3629 { IFF_POINTOPOINT
, "pointopoint" },
3632 { IFF_RUNNING
, "running" },
3635 { IFF_NOARP
, "noarp" },
3638 { IFF_PROMISC
, "promisc" },
3640 #ifdef IFF_NOTRAILERS
3641 { IFF_NOTRAILERS
, "notrailers" },
3644 { IFF_ALLMULTI
, "allmulti" },
3647 { IFF_MASTER
, "master" },
3650 { IFF_SLAVE
, "slave" },
3652 #ifdef IFF_MULTICAST
3653 { IFF_MULTICAST
, "multicast" },
3656 { IFF_PORTSEL
, "portsel" },
3658 #ifdef IFF_AUTOMEDIA
3659 { IFF_AUTOMEDIA
, "automedia" },
3662 { IFF_DYNAMIC
, "dynamic" },
3665 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3668 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3671 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3674 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3677 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3682 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3683 doc
: /* Return information about network interface named IFNAME.
3684 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3685 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3686 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3687 FLAGS is the current flags of the interface. */)
3692 Lisp_Object res
= Qnil
;
3697 CHECK_STRING (ifname
);
3699 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3700 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3702 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3707 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3708 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3710 int flags
= rq
.ifr_flags
;
3711 struct ifflag_def
*fp
;
3715 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3717 if (flags
& fp
->flag_bit
)
3719 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3720 flags
-= fp
->flag_bit
;
3723 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3725 if (flags
& (1 << fnum
))
3727 elt
= Fcons (make_number (fnum
), elt
);
3732 res
= Fcons (elt
, res
);
3735 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3736 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3738 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3739 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3743 for (n
= 0; n
< 6; n
++)
3744 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3745 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3748 res
= Fcons (elt
, res
);
3751 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3752 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3755 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3756 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3758 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3762 res
= Fcons (elt
, res
);
3765 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3766 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3769 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3772 res
= Fcons (elt
, res
);
3775 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3776 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3779 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3782 res
= Fcons (elt
, res
);
3786 return any
? res
: Qnil
;
3789 #endif /* HAVE_SOCKETS */
3791 /* Turn off input and output for process PROC. */
3794 deactivate_process (proc
)
3797 register int inchannel
, outchannel
;
3798 register struct Lisp_Process
*p
= XPROCESS (proc
);
3800 inchannel
= XINT (p
->infd
);
3801 outchannel
= XINT (p
->outfd
);
3803 #ifdef ADAPTIVE_READ_BUFFERING
3804 if (XINT (p
->read_output_delay
) > 0)
3806 if (--process_output_delay_count
< 0)
3807 process_output_delay_count
= 0;
3808 XSETINT (p
->read_output_delay
, 0);
3809 p
->read_output_skip
= Qnil
;
3815 /* Beware SIGCHLD hereabouts. */
3816 flush_pending_output (inchannel
);
3819 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3820 sys$
dassgn (outchannel
);
3821 vs
= get_vms_process_pointer (p
->pid
);
3823 give_back_vms_process_stuff (vs
);
3826 emacs_close (inchannel
);
3827 if (outchannel
>= 0 && outchannel
!= inchannel
)
3828 emacs_close (outchannel
);
3831 XSETINT (p
->infd
, -1);
3832 XSETINT (p
->outfd
, -1);
3833 #ifdef DATAGRAM_SOCKETS
3834 if (DATAGRAM_CHAN_P (inchannel
))
3836 xfree (datagram_address
[inchannel
].sa
);
3837 datagram_address
[inchannel
].sa
= 0;
3838 datagram_address
[inchannel
].len
= 0;
3841 chan_process
[inchannel
] = Qnil
;
3842 FD_CLR (inchannel
, &input_wait_mask
);
3843 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3844 #ifdef NON_BLOCKING_CONNECT
3845 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3847 FD_CLR (inchannel
, &connect_wait_mask
);
3848 if (--num_pending_connects
< 0)
3852 if (inchannel
== max_process_desc
)
3855 /* We just closed the highest-numbered process input descriptor,
3856 so recompute the highest-numbered one now. */
3857 max_process_desc
= 0;
3858 for (i
= 0; i
< MAXDESC
; i
++)
3859 if (!NILP (chan_process
[i
]))
3860 max_process_desc
= i
;
3865 /* Close all descriptors currently in use for communication
3866 with subprocess. This is used in a newly-forked subprocess
3867 to get rid of irrelevant descriptors. */
3870 close_process_descs ()
3874 for (i
= 0; i
< MAXDESC
; i
++)
3876 Lisp_Object process
;
3877 process
= chan_process
[i
];
3878 if (!NILP (process
))
3880 int in
= XINT (XPROCESS (process
)->infd
);
3881 int out
= XINT (XPROCESS (process
)->outfd
);
3884 if (out
>= 0 && in
!= out
)
3891 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3893 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3894 It is read into the process' buffers or given to their filter functions.
3895 Non-nil arg PROCESS means do not return until some output has been received
3898 Non-nil second arg SECONDS and third arg MILLISEC are number of
3899 seconds and milliseconds to wait; return after that much time whether
3900 or not there is input. If SECONDS is a floating point number,
3901 it specifies a fractional number of seconds to wait.
3903 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3904 from PROCESS, suspending reading output from other processes.
3905 If JUST-THIS-ONE is an integer, don't run any timers either.
3906 Return non-nil iff we received any output before the timeout expired. */)
3907 (process
, seconds
, millisec
, just_this_one
)
3908 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
3910 int secs
, usecs
= 0;
3912 if (! NILP (process
))
3913 CHECK_PROCESS (process
);
3915 just_this_one
= Qnil
;
3917 if (!NILP (seconds
))
3919 if (INTEGERP (seconds
))
3920 secs
= XINT (seconds
);
3921 else if (FLOATP (seconds
))
3923 double timeout
= XFLOAT_DATA (seconds
);
3924 secs
= (int) timeout
;
3925 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3928 wrong_type_argument (Qnumberp
, seconds
);
3930 if (INTEGERP (millisec
))
3933 usecs
+= XINT (millisec
) * 1000;
3934 carry
= usecs
/ 1000000;
3936 if ((usecs
-= carry
* 1000000) < 0)
3943 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3944 secs
= -1, usecs
= 0;
3947 secs
= NILP (process
) ? -1 : 0;
3950 (wait_reading_process_output (secs
, usecs
, 0, 0,
3952 !NILP (process
) ? XPROCESS (process
) : NULL
,
3953 NILP (just_this_one
) ? 0 :
3954 !INTEGERP (just_this_one
) ? 1 : -1)
3958 /* Accept a connection for server process SERVER on CHANNEL. */
3960 static int connect_counter
= 0;
3963 server_accept_connection (server
, channel
)
3967 Lisp_Object proc
, caller
, name
, buffer
;
3968 Lisp_Object contact
, host
, service
;
3969 struct Lisp_Process
*ps
= XPROCESS (server
);
3970 struct Lisp_Process
*p
;
3974 struct sockaddr_in in
;
3976 struct sockaddr_in6 in6
;
3978 #ifdef HAVE_LOCAL_SOCKETS
3979 struct sockaddr_un un
;
3982 int len
= sizeof saddr
;
3984 s
= accept (channel
, &saddr
.sa
, &len
);
3993 if (code
== EWOULDBLOCK
)
3997 if (!NILP (ps
->log
))
3998 call3 (ps
->log
, server
, Qnil
,
3999 concat3 (build_string ("accept failed with code"),
4000 Fnumber_to_string (make_number (code
)),
4001 build_string ("\n")));
4007 /* Setup a new process to handle the connection. */
4009 /* Generate a unique identification of the caller, and build contact
4010 information for this process. */
4013 switch (saddr
.sa
.sa_family
)
4017 Lisp_Object args
[5];
4018 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4019 args
[0] = build_string ("%d.%d.%d.%d");
4020 args
[1] = make_number (*ip
++);
4021 args
[2] = make_number (*ip
++);
4022 args
[3] = make_number (*ip
++);
4023 args
[4] = make_number (*ip
++);
4024 host
= Fformat (5, args
);
4025 service
= make_number (ntohs (saddr
.in
.sin_port
));
4027 args
[0] = build_string (" <%s:%d>");
4030 caller
= Fformat (3, args
);
4037 Lisp_Object args
[9];
4038 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4040 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4041 for (i
= 0; i
< 8; i
++)
4042 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4043 host
= Fformat (9, args
);
4044 service
= make_number (ntohs (saddr
.in
.sin_port
));
4046 args
[0] = build_string (" <[%s]:%d>");
4049 caller
= Fformat (3, args
);
4054 #ifdef HAVE_LOCAL_SOCKETS
4058 caller
= Fnumber_to_string (make_number (connect_counter
));
4059 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
4063 /* Create a new buffer name for this process if it doesn't have a
4064 filter. The new buffer name is based on the buffer name or
4065 process name of the server process concatenated with the caller
4068 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4072 buffer
= ps
->buffer
;
4074 buffer
= Fbuffer_name (buffer
);
4079 buffer
= concat2 (buffer
, caller
);
4080 buffer
= Fget_buffer_create (buffer
);
4084 /* Generate a unique name for the new server process. Combine the
4085 server process name with the caller identification. */
4087 name
= concat2 (ps
->name
, caller
);
4088 proc
= make_process (name
);
4090 chan_process
[s
] = proc
;
4093 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4096 fcntl (s
, F_SETFL
, O_NDELAY
);
4100 p
= XPROCESS (proc
);
4102 /* Build new contact information for this setup. */
4103 contact
= Fcopy_sequence (ps
->childp
);
4104 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4105 contact
= Fplist_put (contact
, QChost
, host
);
4106 if (!NILP (service
))
4107 contact
= Fplist_put (contact
, QCservice
, service
);
4108 contact
= Fplist_put (contact
, QCremote
,
4109 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4110 #ifdef HAVE_GETSOCKNAME
4112 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4113 contact
= Fplist_put (contact
, QClocal
,
4114 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4117 p
->childp
= contact
;
4118 p
->plist
= Fcopy_sequence (ps
->plist
);
4121 p
->sentinel
= ps
->sentinel
;
4122 p
->filter
= ps
->filter
;
4125 XSETINT (p
->infd
, s
);
4126 XSETINT (p
->outfd
, s
);
4129 /* Client processes for accepted connections are not stopped initially. */
4130 if (!EQ (p
->filter
, Qt
))
4132 FD_SET (s
, &input_wait_mask
);
4133 FD_SET (s
, &non_keyboard_wait_mask
);
4136 if (s
> max_process_desc
)
4137 max_process_desc
= s
;
4139 /* Setup coding system for new process based on server process.
4140 This seems to be the proper thing to do, as the coding system
4141 of the new process should reflect the settings at the time the
4142 server socket was opened; not the current settings. */
4144 p
->decode_coding_system
= ps
->decode_coding_system
;
4145 p
->encode_coding_system
= ps
->encode_coding_system
;
4146 setup_process_coding_systems (proc
);
4148 p
->decoding_buf
= make_uninit_string (0);
4149 p
->decoding_carryover
= make_number (0);
4150 p
->encoding_buf
= make_uninit_string (0);
4151 p
->encoding_carryover
= make_number (0);
4153 p
->inherit_coding_system_flag
4154 = (NILP (buffer
) ? Qnil
: ps
->inherit_coding_system_flag
);
4156 if (!NILP (ps
->log
))
4157 call3 (ps
->log
, server
, proc
,
4158 concat3 (build_string ("accept from "),
4159 (STRINGP (host
) ? host
: build_string ("-")),
4160 build_string ("\n")));
4162 if (!NILP (p
->sentinel
))
4163 exec_sentinel (proc
,
4164 concat3 (build_string ("open from "),
4165 (STRINGP (host
) ? host
: build_string ("-")),
4166 build_string ("\n")));
4169 /* This variable is different from waiting_for_input in keyboard.c.
4170 It is used to communicate to a lisp process-filter/sentinel (via the
4171 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4172 for user-input when that process-filter was called.
4173 waiting_for_input cannot be used as that is by definition 0 when
4174 lisp code is being evalled.
4175 This is also used in record_asynch_buffer_change.
4176 For that purpose, this must be 0
4177 when not inside wait_reading_process_output. */
4178 static int waiting_for_user_input_p
;
4181 wait_reading_process_output_unwind (data
)
4184 waiting_for_user_input_p
= XINT (data
);
4188 /* This is here so breakpoints can be put on it. */
4190 wait_reading_process_output_1 ()
4194 /* Use a wrapper around select to work around a bug in gdb 5.3.
4195 Normally, the wrapper is optimzed away by inlining.
4197 If emacs is stopped inside select, the gdb backtrace doesn't
4198 show the function which called select, so it is practically
4199 impossible to step through wait_reading_process_output. */
4203 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4205 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4208 return select (n
, rfd
, wfd
, xfd
, tmo
);
4210 #define select select_wrapper
4213 /* Read and dispose of subprocess output while waiting for timeout to
4214 elapse and/or keyboard input to be available.
4217 timeout in seconds, or
4218 zero for no limit, or
4219 -1 means gobble data immediately available but don't wait for any.
4222 an additional duration to wait, measured in microseconds.
4223 If this is nonzero and time_limit is 0, then the timeout
4224 consists of MICROSECS only.
4226 READ_KBD is a lisp value:
4227 0 to ignore keyboard input, or
4228 1 to return when input is available, or
4229 -1 meaning caller will actually read the input, so don't throw to
4230 the quit handler, or
4232 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4233 output that arrives.
4235 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4236 (and gobble terminal input into the buffer if any arrives).
4238 If WAIT_PROC is specified, wait until something arrives from that
4239 process. The return value is true iff we read some input from
4242 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4243 (suspending output from other processes). A negative value
4244 means don't run any timers either.
4246 If WAIT_PROC is specified, then the function returns true iff we
4247 received input from that process before the timeout elapsed.
4248 Otherwise, return true iff we received input from any process. */
4251 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4252 wait_for_cell
, wait_proc
, just_wait_proc
)
4253 int time_limit
, microsecs
, read_kbd
, do_display
;
4254 Lisp_Object wait_for_cell
;
4255 struct Lisp_Process
*wait_proc
;
4258 register int channel
, nfds
;
4259 SELECT_TYPE Available
;
4260 #ifdef NON_BLOCKING_CONNECT
4261 SELECT_TYPE Connecting
;
4264 int check_delay
, no_avail
;
4267 EMACS_TIME timeout
, end_time
;
4268 int wait_channel
= -1;
4269 int got_some_input
= 0;
4270 int count
= SPECPDL_INDEX ();
4272 FD_ZERO (&Available
);
4273 #ifdef NON_BLOCKING_CONNECT
4274 FD_ZERO (&Connecting
);
4277 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4278 if (wait_proc
!= NULL
)
4279 wait_channel
= XINT (wait_proc
->infd
);
4281 record_unwind_protect (wait_reading_process_output_unwind
,
4282 make_number (waiting_for_user_input_p
));
4283 waiting_for_user_input_p
= read_kbd
;
4285 /* Since we may need to wait several times,
4286 compute the absolute time to return at. */
4287 if (time_limit
|| microsecs
)
4289 EMACS_GET_TIME (end_time
);
4290 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4291 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4293 #ifdef POLL_INTERRUPTED_SYS_CALL
4294 /* AlainF 5-Jul-1996
4295 HP-UX 10.10 seem to have problems with signals coming in
4296 Causes "poll: interrupted system call" messages when Emacs is run
4298 Turn off periodic alarms (in case they are in use),
4299 and then turn off any other atimers. */
4301 turn_on_atimers (0);
4302 #endif /* POLL_INTERRUPTED_SYS_CALL */
4306 int timeout_reduced_for_timers
= 0;
4308 /* If calling from keyboard input, do not quit
4309 since we want to return C-g as an input character.
4310 Otherwise, do pending quit if requested. */
4314 else if (interrupt_input_pending
)
4315 handle_async_input ();
4318 /* Exit now if the cell we're waiting for became non-nil. */
4319 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4322 /* Compute time from now till when time limit is up */
4323 /* Exit if already run out */
4324 if (time_limit
== -1)
4326 /* -1 specified for timeout means
4327 gobble output available now
4328 but don't wait at all. */
4330 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4332 else if (time_limit
|| microsecs
)
4334 EMACS_GET_TIME (timeout
);
4335 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4336 if (EMACS_TIME_NEG_P (timeout
))
4341 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4344 /* Normally we run timers here.
4345 But not if wait_for_cell; in those cases,
4346 the wait is supposed to be short,
4347 and those callers cannot handle running arbitrary Lisp code here. */
4348 if (NILP (wait_for_cell
)
4349 && just_wait_proc
>= 0)
4351 EMACS_TIME timer_delay
;
4355 int old_timers_run
= timers_run
;
4356 struct buffer
*old_buffer
= current_buffer
;
4358 timer_delay
= timer_check (1);
4360 /* If a timer has run, this might have changed buffers
4361 an alike. Make read_key_sequence aware of that. */
4362 if (timers_run
!= old_timers_run
4363 && old_buffer
!= current_buffer
4364 && waiting_for_user_input_p
== -1)
4365 record_asynch_buffer_change ();
4367 if (timers_run
!= old_timers_run
&& do_display
)
4368 /* We must retry, since a timer may have requeued itself
4369 and that could alter the time_delay. */
4370 redisplay_preserve_echo_area (9);
4374 while (!detect_input_pending ());
4376 /* If there is unread keyboard input, also return. */
4378 && requeued_events_pending_p ())
4381 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4383 EMACS_TIME difference
;
4384 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4385 if (EMACS_TIME_NEG_P (difference
))
4387 timeout
= timer_delay
;
4388 timeout_reduced_for_timers
= 1;
4391 /* If time_limit is -1, we are not going to wait at all. */
4392 else if (time_limit
!= -1)
4394 /* This is so a breakpoint can be put here. */
4395 wait_reading_process_output_1 ();
4399 /* Cause C-g and alarm signals to take immediate action,
4400 and cause input available signals to zero out timeout.
4402 It is important that we do this before checking for process
4403 activity. If we get a SIGCHLD after the explicit checks for
4404 process activity, timeout is the only way we will know. */
4406 set_waiting_for_input (&timeout
);
4408 /* If status of something has changed, and no input is
4409 available, notify the user of the change right away. After
4410 this explicit check, we'll let the SIGCHLD handler zap
4411 timeout to get our attention. */
4412 if (update_tick
!= process_tick
&& do_display
)
4415 #ifdef NON_BLOCKING_CONNECT
4419 Atemp
= input_wait_mask
;
4421 /* On Mac OS X 10.0, the SELECT system call always says input is
4422 present (for reading) at stdin, even when none is. This
4423 causes the call to SELECT below to return 1 and
4424 status_notify not to be called. As a result output of
4425 subprocesses are incorrectly discarded.
4429 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4431 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4432 if ((select (max (max_process_desc
, max_keyboard_desc
) + 1,
4434 #ifdef NON_BLOCKING_CONNECT
4435 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4439 (SELECT_TYPE
*)0, &timeout
)
4442 /* It's okay for us to do this and then continue with
4443 the loop, since timeout has already been zeroed out. */
4444 clear_waiting_for_input ();
4445 status_notify (NULL
);
4449 /* Don't wait for output from a non-running process. Just
4450 read whatever data has already been received. */
4451 if (wait_proc
&& wait_proc
->raw_status_new
)
4452 update_status (wait_proc
);
4454 && ! EQ (wait_proc
->status
, Qrun
)
4455 && ! EQ (wait_proc
->status
, Qconnect
))
4457 int nread
, total_nread
= 0;
4459 clear_waiting_for_input ();
4460 XSETPROCESS (proc
, wait_proc
);
4462 /* Read data from the process, until we exhaust it. */
4463 while (XINT (wait_proc
->infd
) >= 0)
4465 nread
= read_process_output (proc
, XINT (wait_proc
->infd
));
4471 total_nread
+= nread
;
4473 else if (nread
== -1 && EIO
== errno
)
4477 else if (nread
== -1 && EAGAIN
== errno
)
4481 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4485 if (total_nread
> 0 && do_display
)
4486 redisplay_preserve_echo_area (10);
4491 /* Wait till there is something to do */
4493 if (wait_proc
&& just_wait_proc
)
4495 if (XINT (wait_proc
->infd
) < 0) /* Terminated */
4497 FD_SET (XINT (wait_proc
->infd
), &Available
);
4499 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4501 else if (!NILP (wait_for_cell
))
4503 Available
= non_process_wait_mask
;
4505 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4510 Available
= non_keyboard_wait_mask
;
4512 Available
= input_wait_mask
;
4513 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4514 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4517 /* If frame size has changed or the window is newly mapped,
4518 redisplay now, before we start to wait. There is a race
4519 condition here; if a SIGIO arrives between now and the select
4520 and indicates that a frame is trashed, the select may block
4521 displaying a trashed screen. */
4522 if (frame_garbaged
&& do_display
)
4524 clear_waiting_for_input ();
4525 redisplay_preserve_echo_area (11);
4527 set_waiting_for_input (&timeout
);
4531 if (read_kbd
&& detect_input_pending ())
4538 #ifdef NON_BLOCKING_CONNECT
4540 Connecting
= connect_wait_mask
;
4543 #ifdef ADAPTIVE_READ_BUFFERING
4544 /* Set the timeout for adaptive read buffering if any
4545 process has non-nil read_output_skip and non-zero
4546 read_output_delay, and we are not reading output for a
4547 specific wait_channel. It is not executed if
4548 Vprocess_adaptive_read_buffering is nil. */
4549 if (process_output_skip
&& check_delay
> 0)
4551 int usecs
= EMACS_USECS (timeout
);
4552 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4553 usecs
= READ_OUTPUT_DELAY_MAX
;
4554 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4556 proc
= chan_process
[channel
];
4559 /* Find minimum non-zero read_output_delay among the
4560 processes with non-nil read_output_skip. */
4561 if (XINT (XPROCESS (proc
)->read_output_delay
) > 0)
4564 if (NILP (XPROCESS (proc
)->read_output_skip
))
4566 FD_CLR (channel
, &Available
);
4567 XPROCESS (proc
)->read_output_skip
= Qnil
;
4568 if (XINT (XPROCESS (proc
)->read_output_delay
) < usecs
)
4569 usecs
= XINT (XPROCESS (proc
)->read_output_delay
);
4572 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4573 process_output_skip
= 0;
4577 nfds
= select (max (max_process_desc
, max_keyboard_desc
) + 1,
4579 #ifdef NON_BLOCKING_CONNECT
4580 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4584 (SELECT_TYPE
*)0, &timeout
);
4589 /* Make C-g and alarm signals set flags again */
4590 clear_waiting_for_input ();
4592 /* If we woke up due to SIGWINCH, actually change size now. */
4593 do_pending_window_change (0);
4595 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4596 /* We wanted the full specified time, so return now. */
4600 if (xerrno
== EINTR
)
4603 /* Ultrix select seems to return ENOMEM when it is
4604 interrupted. Treat it just like EINTR. Bleah. Note
4605 that we want to test for the "ultrix" CPP symbol, not
4606 "__ultrix__"; the latter is only defined under GCC, but
4607 not by DEC's bundled CC. -JimB */
4608 else if (xerrno
== ENOMEM
)
4612 /* This happens for no known reason on ALLIANT.
4613 I am guessing that this is the right response. -- RMS. */
4614 else if (xerrno
== EFAULT
)
4617 else if (xerrno
== EBADF
)
4620 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4621 the child's closure of the pts gives the parent a SIGHUP, and
4622 the ptc file descriptor is automatically closed,
4623 yielding EBADF here or at select() call above.
4624 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4625 in m/ibmrt-aix.h), and here we just ignore the select error.
4626 Cleanup occurs c/o status_notify after SIGCLD. */
4627 no_avail
= 1; /* Cannot depend on values returned */
4633 error ("select error: %s", emacs_strerror (xerrno
));
4638 FD_ZERO (&Available
);
4639 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4642 #if defined(sun) && !defined(USG5_4)
4643 if (nfds
> 0 && keyboard_bit_set (&Available
)
4645 /* System sometimes fails to deliver SIGIO.
4647 David J. Mackenzie says that Emacs doesn't compile under
4648 Solaris if this code is enabled, thus the USG5_4 in the CPP
4649 conditional. "I haven't noticed any ill effects so far.
4650 If you find a Solaris expert somewhere, they might know
4652 kill (getpid (), SIGIO
);
4655 #if 0 /* When polling is used, interrupt_input is 0,
4656 so get_input_pending should read the input.
4657 So this should not be needed. */
4658 /* If we are using polling for input,
4659 and we see input available, make it get read now.
4660 Otherwise it might not actually get read for a second.
4661 And on hpux, since we turn off polling in wait_reading_process_output,
4662 it might never get read at all if we don't spend much time
4663 outside of wait_reading_process_output. */
4664 if (read_kbd
&& interrupt_input
4665 && keyboard_bit_set (&Available
)
4666 && input_polling_used ())
4667 kill (getpid (), SIGALRM
);
4670 /* Check for keyboard input */
4671 /* If there is any, return immediately
4672 to give it higher priority than subprocesses */
4676 int old_timers_run
= timers_run
;
4677 struct buffer
*old_buffer
= current_buffer
;
4680 if (detect_input_pending_run_timers (do_display
))
4682 swallow_events (do_display
);
4683 if (detect_input_pending_run_timers (do_display
))
4687 /* If a timer has run, this might have changed buffers
4688 an alike. Make read_key_sequence aware of that. */
4689 if (timers_run
!= old_timers_run
4690 && waiting_for_user_input_p
== -1
4691 && old_buffer
!= current_buffer
)
4692 record_asynch_buffer_change ();
4698 /* If there is unread keyboard input, also return. */
4700 && requeued_events_pending_p ())
4703 /* If we are not checking for keyboard input now,
4704 do process events (but don't run any timers).
4705 This is so that X events will be processed.
4706 Otherwise they may have to wait until polling takes place.
4707 That would causes delays in pasting selections, for example.
4709 (We used to do this only if wait_for_cell.) */
4710 if (read_kbd
== 0 && detect_input_pending ())
4712 swallow_events (do_display
);
4713 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4714 if (detect_input_pending ())
4719 /* Exit now if the cell we're waiting for became non-nil. */
4720 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4724 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4725 go read it. This can happen with X on BSD after logging out.
4726 In that case, there really is no input and no SIGIO,
4727 but select says there is input. */
4729 if (read_kbd
&& interrupt_input
4730 && keyboard_bit_set (&Available
) && ! noninteractive
)
4731 kill (getpid (), SIGIO
);
4735 got_some_input
|= nfds
> 0;
4737 /* If checking input just got us a size-change event from X,
4738 obey it now if we should. */
4739 if (read_kbd
|| ! NILP (wait_for_cell
))
4740 do_pending_window_change (0);
4742 /* Check for data from a process. */
4743 if (no_avail
|| nfds
== 0)
4746 /* Really FIRST_PROC_DESC should be 0 on Unix,
4747 but this is safer in the short run. */
4748 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4750 if (FD_ISSET (channel
, &Available
)
4751 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4755 /* If waiting for this channel, arrange to return as
4756 soon as no more input to be processed. No more
4758 if (wait_channel
== channel
)
4764 proc
= chan_process
[channel
];
4768 /* If this is a server stream socket, accept connection. */
4769 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4771 server_accept_connection (proc
, channel
);
4775 /* Read data from the process, starting with our
4776 buffered-ahead character if we have one. */
4778 nread
= read_process_output (proc
, channel
);
4781 /* Since read_process_output can run a filter,
4782 which can call accept-process-output,
4783 don't try to read from any other processes
4784 before doing the select again. */
4785 FD_ZERO (&Available
);
4788 redisplay_preserve_echo_area (12);
4791 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4794 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4795 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4797 else if (nread
== -1 && errno
== EAGAIN
)
4801 else if (nread
== -1 && errno
== EAGAIN
)
4803 /* Note that we cannot distinguish between no input
4804 available now and a closed pipe.
4805 With luck, a closed pipe will be accompanied by
4806 subprocess termination and SIGCHLD. */
4807 else if (nread
== 0 && !NETCONN_P (proc
))
4809 #endif /* O_NDELAY */
4810 #endif /* O_NONBLOCK */
4812 /* On some OSs with ptys, when the process on one end of
4813 a pty exits, the other end gets an error reading with
4814 errno = EIO instead of getting an EOF (0 bytes read).
4815 Therefore, if we get an error reading and errno =
4816 EIO, just continue, because the child process has
4817 exited and should clean itself up soon (e.g. when we
4820 However, it has been known to happen that the SIGCHLD
4821 got lost. So raise the signl again just in case.
4823 else if (nread
== -1 && errno
== EIO
)
4824 kill (getpid (), SIGCHLD
);
4825 #endif /* HAVE_PTYS */
4826 /* If we can detect process termination, don't consider the process
4827 gone just because its pipe is closed. */
4829 else if (nread
== 0 && !NETCONN_P (proc
))
4834 /* Preserve status of processes already terminated. */
4835 XSETINT (XPROCESS (proc
)->tick
, ++process_tick
);
4836 deactivate_process (proc
);
4837 if (XPROCESS (proc
)->raw_status_new
)
4838 update_status (XPROCESS (proc
));
4839 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4840 XPROCESS (proc
)->status
4841 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4844 #ifdef NON_BLOCKING_CONNECT
4845 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4846 && FD_ISSET (channel
, &connect_wait_mask
))
4848 struct Lisp_Process
*p
;
4850 FD_CLR (channel
, &connect_wait_mask
);
4851 if (--num_pending_connects
< 0)
4854 proc
= chan_process
[channel
];
4858 p
= XPROCESS (proc
);
4861 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4862 So only use it on systems where it is known to work. */
4864 int xlen
= sizeof(xerrno
);
4865 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4870 struct sockaddr pname
;
4871 int pnamelen
= sizeof(pname
);
4873 /* If connection failed, getpeername will fail. */
4875 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4877 /* Obtain connect failure code through error slippage. */
4880 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4887 XSETINT (p
->tick
, ++process_tick
);
4888 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4889 deactivate_process (proc
);
4894 /* Execute the sentinel here. If we had relied on
4895 status_notify to do it later, it will read input
4896 from the process before calling the sentinel. */
4897 exec_sentinel (proc
, build_string ("open\n"));
4898 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4900 FD_SET (XINT (p
->infd
), &input_wait_mask
);
4901 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
4905 #endif /* NON_BLOCKING_CONNECT */
4906 } /* end for each file descriptor */
4907 } /* end while exit conditions not met */
4909 unbind_to (count
, Qnil
);
4911 /* If calling from keyboard input, do not quit
4912 since we want to return C-g as an input character.
4913 Otherwise, do pending quit if requested. */
4916 /* Prevent input_pending from remaining set if we quit. */
4917 clear_input_pending ();
4920 #ifdef POLL_INTERRUPTED_SYS_CALL
4921 /* AlainF 5-Jul-1996
4922 HP-UX 10.10 seems to have problems with signals coming in
4923 Causes "poll: interrupted system call" messages when Emacs is run
4925 Turn periodic alarms back on */
4927 #endif /* POLL_INTERRUPTED_SYS_CALL */
4929 return got_some_input
;
4932 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4935 read_process_output_call (fun_and_args
)
4936 Lisp_Object fun_and_args
;
4938 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4942 read_process_output_error_handler (error
)
4945 cmd_error_internal (error
, "error in process filter: ");
4947 update_echo_area ();
4948 Fsleep_for (make_number (2), Qnil
);
4952 /* Read pending output from the process channel,
4953 starting with our buffered-ahead character if we have one.
4954 Yield number of decoded characters read.
4956 This function reads at most 4096 characters.
4957 If you want to read all available subprocess output,
4958 you must call it repeatedly until it returns zero.
4960 The characters read are decoded according to PROC's coding-system
4964 read_process_output (proc
, channel
)
4966 register int channel
;
4968 register int nbytes
;
4970 register Lisp_Object outstream
;
4971 register struct buffer
*old
= current_buffer
;
4972 register struct Lisp_Process
*p
= XPROCESS (proc
);
4973 register int opoint
;
4974 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
4975 int carryover
= XINT (p
->decoding_carryover
);
4979 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
4981 vs
= get_vms_process_pointer (p
->pid
);
4985 return (0); /* Really weird if it does this */
4986 if (!(vs
->iosb
[0] & 1))
4987 return -1; /* I/O error */
4990 error ("Could not get VMS process pointer");
4991 chars
= vs
->inputBuffer
;
4992 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
4995 start_vms_process_read (vs
); /* Crank up the next read on the process */
4996 return 1; /* Nothing worth printing, say we got 1 */
5000 /* The data carried over in the previous decoding (which are at
5001 the tail of decoding buffer) should be prepended to the new
5002 data read to decode all together. */
5003 chars
= (char *) alloca (nbytes
+ carryover
);
5004 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
5005 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
5009 chars
= (char *) alloca (carryover
+ readmax
);
5011 /* See the comment above. */
5012 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5014 #ifdef DATAGRAM_SOCKETS
5015 /* We have a working select, so proc_buffered_char is always -1. */
5016 if (DATAGRAM_CHAN_P (channel
))
5018 int len
= datagram_address
[channel
].len
;
5019 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5020 0, datagram_address
[channel
].sa
, &len
);
5024 if (proc_buffered_char
[channel
] < 0)
5026 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5027 #ifdef ADAPTIVE_READ_BUFFERING
5028 if (nbytes
> 0 && !NILP (p
->adaptive_read_buffering
))
5030 int delay
= XINT (p
->read_output_delay
);
5033 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5036 process_output_delay_count
++;
5037 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5040 else if (delay
> 0 && (nbytes
== readmax
))
5042 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5044 process_output_delay_count
--;
5046 XSETINT (p
->read_output_delay
, delay
);
5049 p
->read_output_skip
= Qt
;
5050 process_output_skip
= 1;
5057 chars
[carryover
] = proc_buffered_char
[channel
];
5058 proc_buffered_char
[channel
] = -1;
5059 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5063 nbytes
= nbytes
+ 1;
5065 #endif /* not VMS */
5067 XSETINT (p
->decoding_carryover
, 0);
5069 /* At this point, NBYTES holds number of bytes just received
5070 (including the one in proc_buffered_char[channel]). */
5073 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5075 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5078 /* Now set NBYTES how many bytes we must decode. */
5079 nbytes
+= carryover
;
5081 /* Read and dispose of the process output. */
5082 outstream
= p
->filter
;
5083 if (!NILP (outstream
))
5085 /* We inhibit quit here instead of just catching it so that
5086 hitting ^G when a filter happens to be running won't screw
5088 int count
= SPECPDL_INDEX ();
5089 Lisp_Object odeactivate
;
5090 Lisp_Object obuffer
, okeymap
;
5092 int outer_running_asynch_code
= running_asynch_code
;
5093 int waiting
= waiting_for_user_input_p
;
5095 /* No need to gcpro these, because all we do with them later
5096 is test them for EQness, and none of them should be a string. */
5097 odeactivate
= Vdeactivate_mark
;
5098 XSETBUFFER (obuffer
, current_buffer
);
5099 okeymap
= current_buffer
->keymap
;
5101 specbind (Qinhibit_quit
, Qt
);
5102 specbind (Qlast_nonmenu_event
, Qt
);
5104 /* In case we get recursively called,
5105 and we already saved the match data nonrecursively,
5106 save the same match data in safely recursive fashion. */
5107 if (outer_running_asynch_code
)
5110 /* Don't clobber the CURRENT match data, either! */
5111 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5112 restore_search_regs ();
5113 record_unwind_save_match_data ();
5114 Fset_match_data (tem
, Qt
);
5117 /* For speed, if a search happens within this code,
5118 save the match data in a special nonrecursive fashion. */
5119 running_asynch_code
= 1;
5121 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5123 Vlast_coding_system_used
= coding
->symbol
;
5124 /* A new coding system might be found. */
5125 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5127 p
->decode_coding_system
= coding
->symbol
;
5129 /* Don't call setup_coding_system for
5130 proc_decode_coding_system[channel] here. It is done in
5131 detect_coding called via decode_coding above. */
5133 /* If a coding system for encoding is not yet decided, we set
5134 it as the same as coding-system for decoding.
5136 But, before doing that we must check if
5137 proc_encode_coding_system[p->outfd] surely points to a
5138 valid memory because p->outfd will be changed once EOF is
5139 sent to the process. */
5140 if (NILP (p
->encode_coding_system
)
5141 && proc_encode_coding_system
[XINT (p
->outfd
)])
5143 p
->encode_coding_system
= coding
->symbol
;
5144 setup_coding_system (coding
->symbol
,
5145 proc_encode_coding_system
[XINT (p
->outfd
)]);
5146 if (proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5147 == CODING_EOL_UNDECIDED
)
5148 proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5153 carryover
= nbytes
- coding
->consumed
;
5157 if (SCHARS (p
->decoding_buf
) < carryover
)
5158 p
->decoding_buf
= make_uninit_string (carryover
);
5159 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5161 XSETINT (p
->decoding_carryover
, carryover
);
5162 /* Adjust the multibyteness of TEXT to that of the filter. */
5163 if (NILP (p
->filter_multibyte
) != ! STRING_MULTIBYTE (text
))
5164 text
= (STRING_MULTIBYTE (text
)
5165 ? Fstring_as_unibyte (text
)
5166 : Fstring_to_multibyte (text
));
5167 if (SBYTES (text
) > 0)
5168 internal_condition_case_1 (read_process_output_call
,
5170 Fcons (proc
, Fcons (text
, Qnil
))),
5171 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5172 read_process_output_error_handler
);
5174 /* If we saved the match data nonrecursively, restore it now. */
5175 restore_search_regs ();
5176 running_asynch_code
= outer_running_asynch_code
;
5178 /* Handling the process output should not deactivate the mark. */
5179 Vdeactivate_mark
= odeactivate
;
5181 /* Restore waiting_for_user_input_p as it was
5182 when we were called, in case the filter clobbered it. */
5183 waiting_for_user_input_p
= waiting
;
5185 #if 0 /* Call record_asynch_buffer_change unconditionally,
5186 because we might have changed minor modes or other things
5187 that affect key bindings. */
5188 if (! EQ (Fcurrent_buffer (), obuffer
)
5189 || ! EQ (current_buffer
->keymap
, okeymap
))
5191 /* But do it only if the caller is actually going to read events.
5192 Otherwise there's no need to make him wake up, and it could
5193 cause trouble (for example it would make sit_for return). */
5194 if (waiting_for_user_input_p
== -1)
5195 record_asynch_buffer_change ();
5198 start_vms_process_read (vs
);
5200 unbind_to (count
, Qnil
);
5204 /* If no filter, write into buffer if it isn't dead. */
5205 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5207 Lisp_Object old_read_only
;
5208 int old_begv
, old_zv
;
5209 int old_begv_byte
, old_zv_byte
;
5210 Lisp_Object odeactivate
;
5211 int before
, before_byte
;
5216 odeactivate
= Vdeactivate_mark
;
5218 Fset_buffer (p
->buffer
);
5220 opoint_byte
= PT_BYTE
;
5221 old_read_only
= current_buffer
->read_only
;
5224 old_begv_byte
= BEGV_BYTE
;
5225 old_zv_byte
= ZV_BYTE
;
5227 current_buffer
->read_only
= Qnil
;
5229 /* Insert new output into buffer
5230 at the current end-of-output marker,
5231 thus preserving logical ordering of input and output. */
5232 if (XMARKER (p
->mark
)->buffer
)
5233 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5234 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5237 SET_PT_BOTH (ZV
, ZV_BYTE
);
5239 before_byte
= PT_BYTE
;
5241 /* If the output marker is outside of the visible region, save
5242 the restriction and widen. */
5243 if (! (BEGV
<= PT
&& PT
<= ZV
))
5246 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5248 Vlast_coding_system_used
= coding
->symbol
;
5249 /* A new coding system might be found. See the comment in the
5250 similar code in the previous `if' block. */
5251 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5253 p
->decode_coding_system
= coding
->symbol
;
5254 if (NILP (p
->encode_coding_system
)
5255 && proc_encode_coding_system
[XINT (p
->outfd
)])
5257 p
->encode_coding_system
= coding
->symbol
;
5258 setup_coding_system (coding
->symbol
,
5259 proc_encode_coding_system
[XINT (p
->outfd
)]);
5260 if (proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5261 == CODING_EOL_UNDECIDED
)
5262 proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5266 carryover
= nbytes
- coding
->consumed
;
5270 if (SCHARS (p
->decoding_buf
) < carryover
)
5271 p
->decoding_buf
= make_uninit_string (carryover
);
5272 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5274 XSETINT (p
->decoding_carryover
, carryover
);
5276 /* Adjust the multibyteness of TEXT to that of the buffer. */
5277 if (NILP (current_buffer
->enable_multibyte_characters
)
5278 != ! STRING_MULTIBYTE (text
))
5279 text
= (STRING_MULTIBYTE (text
)
5280 ? Fstring_as_unibyte (text
)
5281 : Fstring_to_multibyte (text
));
5282 /* Insert before markers in case we are inserting where
5283 the buffer's mark is, and the user's next command is Meta-y. */
5284 insert_from_string_before_markers (text
, 0, 0,
5285 SCHARS (text
), SBYTES (text
), 0);
5287 /* Make sure the process marker's position is valid when the
5288 process buffer is changed in the signal_after_change above.
5289 W3 is known to do that. */
5290 if (BUFFERP (p
->buffer
)
5291 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5292 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5294 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5296 update_mode_lines
++;
5298 /* Make sure opoint and the old restrictions
5299 float ahead of any new text just as point would. */
5300 if (opoint
>= before
)
5302 opoint
+= PT
- before
;
5303 opoint_byte
+= PT_BYTE
- before_byte
;
5305 if (old_begv
> before
)
5307 old_begv
+= PT
- before
;
5308 old_begv_byte
+= PT_BYTE
- before_byte
;
5310 if (old_zv
>= before
)
5312 old_zv
+= PT
- before
;
5313 old_zv_byte
+= PT_BYTE
- before_byte
;
5316 /* If the restriction isn't what it should be, set it. */
5317 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5318 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5320 /* Handling the process output should not deactivate the mark. */
5321 Vdeactivate_mark
= odeactivate
;
5323 current_buffer
->read_only
= old_read_only
;
5324 SET_PT_BOTH (opoint
, opoint_byte
);
5325 set_buffer_internal (old
);
5328 start_vms_process_read (vs
);
5333 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5335 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5336 This is intended for use by asynchronous process output filters and sentinels. */)
5339 return (waiting_for_user_input_p
? Qt
: Qnil
);
5342 /* Sending data to subprocess */
5344 jmp_buf send_process_frame
;
5345 Lisp_Object process_sent_to
;
5348 send_process_trap ()
5350 SIGNAL_THREAD_CHECK (SIGPIPE
);
5355 sigunblock (sigmask (SIGPIPE
));
5356 longjmp (send_process_frame
, 1);
5359 /* Send some data to process PROC.
5360 BUF is the beginning of the data; LEN is the number of characters.
5361 OBJECT is the Lisp object that the data comes from. If OBJECT is
5362 nil or t, it means that the data comes from C string.
5364 If OBJECT is not nil, the data is encoded by PROC's coding-system
5365 for encoding before it is sent.
5367 This function can evaluate Lisp code and can garbage collect. */
5370 send_process (proc
, buf
, len
, object
)
5371 volatile Lisp_Object proc
;
5372 unsigned char *volatile buf
;
5374 volatile Lisp_Object object
;
5376 /* Use volatile to protect variables from being clobbered by longjmp. */
5377 struct Lisp_Process
*p
= XPROCESS (proc
);
5379 struct coding_system
*coding
;
5380 struct gcpro gcpro1
;
5381 SIGTYPE (*volatile old_sigpipe
) ();
5386 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5389 if (p
->raw_status_new
)
5391 if (! EQ (p
->status
, Qrun
))
5392 error ("Process %s not running", SDATA (p
->name
));
5393 if (XINT (p
->outfd
) < 0)
5394 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5396 coding
= proc_encode_coding_system
[XINT (p
->outfd
)];
5397 Vlast_coding_system_used
= coding
->symbol
;
5399 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5400 || (BUFFERP (object
)
5401 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5404 if (!EQ (coding
->symbol
, p
->encode_coding_system
))
5405 /* The coding system for encoding was changed to raw-text
5406 because we sent a unibyte text previously. Now we are
5407 sending a multibyte text, thus we must encode it by the
5408 original coding system specified for the current process. */
5409 setup_coding_system (p
->encode_coding_system
, coding
);
5410 if (coding
->eol_type
== CODING_EOL_UNDECIDED
)
5411 coding
->eol_type
= system_eol_type
;
5412 /* src_multibyte should be set to 1 _after_ a call to
5413 setup_coding_system, since it resets src_multibyte to
5415 coding
->src_multibyte
= 1;
5419 /* For sending a unibyte text, character code conversion should
5420 not take place but EOL conversion should. So, setup raw-text
5421 or one of the subsidiary if we have not yet done it. */
5422 if (coding
->type
!= coding_type_raw_text
)
5424 if (CODING_REQUIRE_FLUSHING (coding
))
5426 /* But, before changing the coding, we must flush out data. */
5427 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5428 send_process (proc
, "", 0, Qt
);
5430 coding
->src_multibyte
= 0;
5431 setup_raw_text_coding_system (coding
);
5434 coding
->dst_multibyte
= 0;
5436 if (CODING_REQUIRE_ENCODING (coding
))
5438 int require
= encoding_buffer_size (coding
, len
);
5439 int from_byte
= -1, from
= -1, to
= -1;
5441 if (BUFFERP (object
))
5443 from_byte
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5444 from
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
);
5445 to
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
+ len
);
5447 else if (STRINGP (object
))
5449 from_byte
= buf
- SDATA (object
);
5450 from
= string_byte_to_char (object
, from_byte
);
5451 to
= string_byte_to_char (object
, from_byte
+ len
);
5454 if (coding
->composing
!= COMPOSITION_DISABLED
)
5457 coding_save_composition (coding
, from
, to
, object
);
5459 coding
->composing
= COMPOSITION_DISABLED
;
5462 if (SBYTES (p
->encoding_buf
) < require
)
5463 p
->encoding_buf
= make_uninit_string (require
);
5466 buf
= (BUFFERP (object
)
5467 ? BUF_BYTE_ADDRESS (XBUFFER (object
), from_byte
)
5468 : SDATA (object
) + from_byte
);
5470 object
= p
->encoding_buf
;
5471 encode_coding (coding
, (char *) buf
, SDATA (object
),
5472 len
, SBYTES (object
));
5473 coding_free_composition_data (coding
);
5474 len
= coding
->produced
;
5475 buf
= SDATA (object
);
5479 vs
= get_vms_process_pointer (p
->pid
);
5481 error ("Could not find this process: %x", p
->pid
);
5482 else if (write_to_vms_process (vs
, buf
, len
))
5486 if (pty_max_bytes
== 0)
5488 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5489 pty_max_bytes
= fpathconf (XFASTINT (p
->outfd
), _PC_MAX_CANON
);
5490 if (pty_max_bytes
< 0)
5491 pty_max_bytes
= 250;
5493 pty_max_bytes
= 250;
5495 /* Deduct one, to leave space for the eof. */
5499 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5500 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5501 when returning with longjmp despite being declared volatile. */
5502 if (!setjmp (send_process_frame
))
5504 process_sent_to
= proc
;
5509 /* Decide how much data we can send in one batch.
5510 Long lines need to be split into multiple batches. */
5511 if (!NILP (p
->pty_flag
))
5513 /* Starting this at zero is always correct when not the first
5514 iteration because the previous iteration ended by sending C-d.
5515 It may not be correct for the first iteration
5516 if a partial line was sent in a separate send_process call.
5517 If that proves worth handling, we need to save linepos
5518 in the process object. */
5520 unsigned char *ptr
= (unsigned char *) buf
;
5521 unsigned char *end
= (unsigned char *) buf
+ len
;
5523 /* Scan through this text for a line that is too long. */
5524 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5532 /* If we found one, break the line there
5533 and put in a C-d to force the buffer through. */
5537 /* Send this batch, using one or more write calls. */
5540 int outfd
= XINT (p
->outfd
);
5541 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5542 #ifdef DATAGRAM_SOCKETS
5543 if (DATAGRAM_CHAN_P (outfd
))
5545 rv
= sendto (outfd
, (char *) buf
, this,
5546 0, datagram_address
[outfd
].sa
,
5547 datagram_address
[outfd
].len
);
5548 if (rv
< 0 && errno
== EMSGSIZE
)
5550 signal (SIGPIPE
, old_sigpipe
);
5551 report_file_error ("sending datagram",
5552 Fcons (proc
, Qnil
));
5558 rv
= emacs_write (outfd
, (char *) buf
, this);
5559 #ifdef ADAPTIVE_READ_BUFFERING
5560 if (XINT (p
->read_output_delay
) > 0
5561 && EQ (p
->adaptive_read_buffering
, Qt
))
5563 XSETFASTINT (p
->read_output_delay
, 0);
5564 process_output_delay_count
--;
5565 p
->read_output_skip
= Qnil
;
5569 signal (SIGPIPE
, old_sigpipe
);
5575 || errno
== EWOULDBLOCK
5581 /* Buffer is full. Wait, accepting input;
5582 that may allow the program
5583 to finish doing output and read more. */
5587 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5588 /* A gross hack to work around a bug in FreeBSD.
5589 In the following sequence, read(2) returns
5593 write(2) 954 bytes, get EAGAIN
5594 read(2) 1024 bytes in process_read_output
5595 read(2) 11 bytes in process_read_output
5597 That is, read(2) returns more bytes than have
5598 ever been written successfully. The 1033 bytes
5599 read are the 1022 bytes written successfully
5600 after processing (for example with CRs added if
5601 the terminal is set up that way which it is
5602 here). The same bytes will be seen again in a
5603 later read(2), without the CRs. */
5605 if (errno
== EAGAIN
)
5608 ioctl (XINT (p
->outfd
), TIOCFLUSH
, &flags
);
5610 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5612 /* Running filters might relocate buffers or strings.
5613 Arrange to relocate BUF. */
5614 if (BUFFERP (object
))
5615 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5616 else if (STRINGP (object
))
5617 offset
= buf
- SDATA (object
);
5619 #ifdef EMACS_HAS_USECS
5620 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5622 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5625 if (BUFFERP (object
))
5626 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5627 else if (STRINGP (object
))
5628 buf
= offset
+ SDATA (object
);
5633 /* This is a real error. */
5634 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5641 /* If we sent just part of the string, put in an EOF
5642 to force it through, before we send the rest. */
5644 Fprocess_send_eof (proc
);
5647 #endif /* not VMS */
5650 signal (SIGPIPE
, old_sigpipe
);
5652 proc
= process_sent_to
;
5653 p
= XPROCESS (proc
);
5655 p
->raw_status_new
= 0;
5656 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5657 XSETINT (p
->tick
, ++process_tick
);
5658 deactivate_process (proc
);
5660 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5662 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5670 send_process_object_unwind (buf
)
5675 if (XBUFFER (buf
) == current_buffer
)
5677 tembuf
= Fcurrent_buffer ();
5679 Fkill_buffer (tembuf
);
5683 /* Send current contents of region between START and END to PROC.
5684 If START is a string, send it instead.
5685 This function can evaluate Lisp code and can garbage collect. */
5688 send_process_object (proc
, start
, end
)
5689 Lisp_Object proc
, start
, end
;
5691 int count
= SPECPDL_INDEX ();
5692 Lisp_Object object
= STRINGP (start
) ? start
: Fcurrent_buffer ();
5693 struct buffer
*given_buffer
= current_buffer
;
5697 record_unwind_protect (send_process_object_unwind
, Fcurrent_buffer ());
5699 if (STRINGP (object
) ? STRING_MULTIBYTE (object
)
5700 : ! NILP (XBUFFER (object
)->enable_multibyte_characters
))
5702 struct Lisp_Process
*p
= XPROCESS (proc
);
5703 struct coding_system
*coding
;
5705 if (p
->raw_status_new
)
5707 if (! EQ (p
->status
, Qrun
))
5708 error ("Process %s not running", SDATA (p
->name
));
5709 if (XINT (p
->outfd
) < 0)
5710 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5712 coding
= proc_encode_coding_system
[XINT (p
->outfd
)];
5713 if (! EQ (coding
->symbol
, p
->encode_coding_system
))
5714 /* The coding system for encoding was changed to raw-text
5715 because we sent a unibyte text previously. Now we are
5716 sending a multibyte text, thus we must encode it by the
5717 original coding system specified for the current process. */
5718 setup_coding_system (p
->encode_coding_system
, coding
);
5719 if (! NILP (coding
->pre_write_conversion
))
5721 struct gcpro gcpro1
, gcpro2
;
5723 GCPRO2 (proc
, object
);
5724 call2 (coding
->pre_write_conversion
, start
, end
);
5726 if (given_buffer
!= current_buffer
)
5728 start
= make_number (BEGV
), end
= make_number (ZV
);
5729 object
= Fcurrent_buffer ();
5734 if (BUFFERP (object
))
5736 EMACS_INT start_byte
;
5738 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5739 move_gap (XINT (end
));
5740 start_byte
= CHAR_TO_BYTE (XINT (start
));
5741 buf
= BYTE_POS_ADDR (start_byte
);
5742 len
= CHAR_TO_BYTE (XINT (end
)) - start_byte
;
5746 buf
= SDATA (object
);
5747 len
= SBYTES (object
);
5749 send_process (proc
, buf
, len
, object
);
5751 unbind_to (count
, Qnil
);
5754 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5756 doc
: /* Send current contents of region as input to PROCESS.
5757 PROCESS may be a process, a buffer, the name of a process or buffer, or
5758 nil, indicating the current buffer's process.
5759 Called from program, takes three arguments, PROCESS, START and END.
5760 If the region is more than 500 characters long,
5761 it is sent in several bunches. This may happen even for shorter regions.
5762 Output from processes can arrive in between bunches. */)
5763 (process
, start
, end
)
5764 Lisp_Object process
, start
, end
;
5768 proc
= get_process (process
);
5769 validate_region (&start
, &end
);
5770 send_process_object (proc
, start
, end
);
5774 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5776 doc
: /* Send PROCESS the contents of STRING as input.
5777 PROCESS may be a process, a buffer, the name of a process or buffer, or
5778 nil, indicating the current buffer's process.
5779 If STRING is more than 500 characters long,
5780 it is sent in several bunches. This may happen even for shorter strings.
5781 Output from processes can arrive in between bunches. */)
5783 Lisp_Object process
, string
;
5786 CHECK_STRING (string
);
5787 proc
= get_process (process
);
5788 send_process_object (proc
, string
, Qnil
);
5792 /* Return the foreground process group for the tty/pty that
5793 the process P uses. */
5795 emacs_get_tty_pgrp (p
)
5796 struct Lisp_Process
*p
;
5801 if (ioctl (XINT (p
->infd
), TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5804 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5805 master side. Try the slave side. */
5806 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5810 ioctl (fd
, TIOCGPGRP
, &gid
);
5814 #endif /* defined (TIOCGPGRP ) */
5819 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5820 Sprocess_running_child_p
, 0, 1, 0,
5821 doc
: /* Return t if PROCESS has given the terminal to a child.
5822 If the operating system does not make it possible to find out,
5823 return t unconditionally. */)
5825 Lisp_Object process
;
5827 /* Initialize in case ioctl doesn't exist or gives an error,
5828 in a way that will cause returning t. */
5831 struct Lisp_Process
*p
;
5833 proc
= get_process (process
);
5834 p
= XPROCESS (proc
);
5836 if (!EQ (p
->childp
, Qt
))
5837 error ("Process %s is not a subprocess",
5839 if (XINT (p
->infd
) < 0)
5840 error ("Process %s is not active",
5843 gid
= emacs_get_tty_pgrp (p
);
5850 /* send a signal number SIGNO to PROCESS.
5851 If CURRENT_GROUP is t, that means send to the process group
5852 that currently owns the terminal being used to communicate with PROCESS.
5853 This is used for various commands in shell mode.
5854 If CURRENT_GROUP is lambda, that means send to the process group
5855 that currently owns the terminal, but only if it is NOT the shell itself.
5857 If NOMSG is zero, insert signal-announcements into process's buffers
5860 If we can, we try to signal PROCESS by sending control characters
5861 down the pty. This allows us to signal inferiors who have changed
5862 their uid, for which killpg would return an EPERM error. */
5865 process_send_signal (process
, signo
, current_group
, nomsg
)
5866 Lisp_Object process
;
5868 Lisp_Object current_group
;
5872 register struct Lisp_Process
*p
;
5876 proc
= get_process (process
);
5877 p
= XPROCESS (proc
);
5879 if (!EQ (p
->childp
, Qt
))
5880 error ("Process %s is not a subprocess",
5882 if (XINT (p
->infd
) < 0)
5883 error ("Process %s is not active",
5886 if (NILP (p
->pty_flag
))
5887 current_group
= Qnil
;
5889 /* If we are using pgrps, get a pgrp number and make it negative. */
5890 if (NILP (current_group
))
5891 /* Send the signal to the shell's process group. */
5895 #ifdef SIGNALS_VIA_CHARACTERS
5896 /* If possible, send signals to the entire pgrp
5897 by sending an input character to it. */
5899 /* TERMIOS is the latest and bestest, and seems most likely to
5900 work. If the system has it, use it. */
5903 cc_t
*sig_char
= NULL
;
5905 tcgetattr (XINT (p
->infd
), &t
);
5910 sig_char
= &t
.c_cc
[VINTR
];
5914 sig_char
= &t
.c_cc
[VQUIT
];
5918 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5919 sig_char
= &t
.c_cc
[VSWTCH
];
5921 sig_char
= &t
.c_cc
[VSUSP
];
5926 if (sig_char
&& *sig_char
!= CDISABLE
)
5928 send_process (proc
, sig_char
, 1, Qnil
);
5931 /* If we can't send the signal with a character,
5932 fall through and send it another way. */
5933 #else /* ! HAVE_TERMIOS */
5935 /* On Berkeley descendants, the following IOCTL's retrieve the
5936 current control characters. */
5937 #if defined (TIOCGLTC) && defined (TIOCGETC)
5945 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5946 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5949 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5950 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5954 ioctl (XINT (p
->infd
), TIOCGLTC
, &lc
);
5955 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5957 #endif /* ! defined (SIGTSTP) */
5960 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5962 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
5969 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5970 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
5973 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5974 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
5978 ioctl (XINT (p
->infd
), TCGETA
, &t
);
5979 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
5981 #endif /* ! defined (SIGTSTP) */
5983 #else /* ! defined (TCGETA) */
5984 Your configuration files are messed up
.
5985 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
5986 you'd better be using one of the alternatives above! */
5987 #endif /* ! defined (TCGETA) */
5988 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5989 /* In this case, the code above should alway returns. */
5991 #endif /* ! defined HAVE_TERMIOS */
5993 /* The code above may fall through if it can't
5994 handle the signal. */
5995 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
5998 /* Get the current pgrp using the tty itself, if we have that.
5999 Otherwise, use the pty to get the pgrp.
6000 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6001 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6002 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6003 His patch indicates that if TIOCGPGRP returns an error, then
6004 we should just assume that p->pid is also the process group id. */
6006 gid
= emacs_get_tty_pgrp (p
);
6009 /* If we can't get the information, assume
6010 the shell owns the tty. */
6013 /* It is not clear whether anything really can set GID to -1.
6014 Perhaps on some system one of those ioctls can or could do so.
6015 Or perhaps this is vestigial. */
6018 #else /* ! defined (TIOCGPGRP ) */
6019 /* Can't select pgrps on this system, so we know that
6020 the child itself heads the pgrp. */
6022 #endif /* ! defined (TIOCGPGRP ) */
6024 /* If current_group is lambda, and the shell owns the terminal,
6025 don't send any signal. */
6026 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6034 p
->raw_status_new
= 0;
6036 XSETINT (p
->tick
, ++process_tick
);
6038 status_notify (NULL
);
6040 #endif /* ! defined (SIGCONT) */
6043 send_process (proc
, "\003", 1, Qnil
); /* ^C */
6048 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
6053 sys$
forcex (&(p
->pid
), 0, 1);
6056 flush_pending_output (XINT (p
->infd
));
6060 /* If we don't have process groups, send the signal to the immediate
6061 subprocess. That isn't really right, but it's better than any
6062 obvious alternative. */
6065 kill (p
->pid
, signo
);
6069 /* gid may be a pid, or minus a pgrp's number */
6071 if (!NILP (current_group
))
6073 if (ioctl (XINT (p
->infd
), TIOCSIGSEND
, signo
) == -1)
6074 EMACS_KILLPG (gid
, signo
);
6081 #else /* ! defined (TIOCSIGSEND) */
6082 EMACS_KILLPG (gid
, signo
);
6083 #endif /* ! defined (TIOCSIGSEND) */
6086 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6087 doc
: /* Interrupt process PROCESS.
6088 PROCESS may be a process, a buffer, or the name of a process or buffer.
6089 No arg or nil means current buffer's process.
6090 Second arg CURRENT-GROUP non-nil means send signal to
6091 the current process-group of the process's controlling terminal
6092 rather than to the process's own process group.
6093 If the process is a shell, this means interrupt current subjob
6094 rather than the shell.
6096 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6097 don't send the signal. */)
6098 (process
, current_group
)
6099 Lisp_Object process
, current_group
;
6101 process_send_signal (process
, SIGINT
, current_group
, 0);
6105 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6106 doc
: /* Kill process PROCESS. May be process or name of one.
6107 See function `interrupt-process' for more details on usage. */)
6108 (process
, current_group
)
6109 Lisp_Object process
, current_group
;
6111 process_send_signal (process
, SIGKILL
, current_group
, 0);
6115 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6116 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6117 See function `interrupt-process' for more details on usage. */)
6118 (process
, current_group
)
6119 Lisp_Object process
, current_group
;
6121 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6125 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6126 doc
: /* Stop process PROCESS. May be process or name of one.
6127 See function `interrupt-process' for more details on usage.
6128 If PROCESS is a network process, inhibit handling of incoming traffic. */)
6129 (process
, current_group
)
6130 Lisp_Object process
, current_group
;
6133 if (PROCESSP (process
) && NETCONN_P (process
))
6135 struct Lisp_Process
*p
;
6137 p
= XPROCESS (process
);
6138 if (NILP (p
->command
)
6139 && XINT (p
->infd
) >= 0)
6141 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6142 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6149 error ("No SIGTSTP support");
6151 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6156 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6157 doc
: /* Continue process PROCESS. May be process or name of one.
6158 See function `interrupt-process' for more details on usage.
6159 If PROCESS is a network process, resume handling of incoming traffic. */)
6160 (process
, current_group
)
6161 Lisp_Object process
, current_group
;
6164 if (PROCESSP (process
) && NETCONN_P (process
))
6166 struct Lisp_Process
*p
;
6168 p
= XPROCESS (process
);
6169 if (EQ (p
->command
, Qt
)
6170 && XINT (p
->infd
) >= 0
6171 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6173 FD_SET (XINT (p
->infd
), &input_wait_mask
);
6174 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
6181 process_send_signal (process
, SIGCONT
, current_group
, 0);
6183 error ("No SIGCONT support");
6188 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6189 2, 2, "sProcess (name or number): \nnSignal code: ",
6190 doc
: /* Send PROCESS the signal with code SIGCODE.
6191 PROCESS may also be a number specifying the process id of the
6192 process to signal; in this case, the process need not be a child of
6194 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6196 Lisp_Object process
, sigcode
;
6200 if (INTEGERP (process
))
6202 pid
= XINT (process
);
6206 if (FLOATP (process
))
6208 pid
= (pid_t
) XFLOAT_DATA (process
);
6212 if (STRINGP (process
))
6215 if (tem
= Fget_process (process
), NILP (tem
))
6217 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6224 process
= get_process (process
);
6229 CHECK_PROCESS (process
);
6230 pid
= XPROCESS (process
)->pid
;
6232 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6236 #define parse_signal(NAME, VALUE) \
6237 else if (!xstricmp (name, NAME)) \
6238 XSETINT (sigcode, VALUE)
6240 if (INTEGERP (sigcode
))
6244 unsigned char *name
;
6246 CHECK_SYMBOL (sigcode
);
6247 name
= SDATA (SYMBOL_NAME (sigcode
));
6249 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6255 parse_signal ("usr1", SIGUSR1
);
6258 parse_signal ("usr2", SIGUSR2
);
6261 parse_signal ("term", SIGTERM
);
6264 parse_signal ("hup", SIGHUP
);
6267 parse_signal ("int", SIGINT
);
6270 parse_signal ("quit", SIGQUIT
);
6273 parse_signal ("ill", SIGILL
);
6276 parse_signal ("abrt", SIGABRT
);
6279 parse_signal ("emt", SIGEMT
);
6282 parse_signal ("kill", SIGKILL
);
6285 parse_signal ("fpe", SIGFPE
);
6288 parse_signal ("bus", SIGBUS
);
6291 parse_signal ("segv", SIGSEGV
);
6294 parse_signal ("sys", SIGSYS
);
6297 parse_signal ("pipe", SIGPIPE
);
6300 parse_signal ("alrm", SIGALRM
);
6303 parse_signal ("urg", SIGURG
);
6306 parse_signal ("stop", SIGSTOP
);
6309 parse_signal ("tstp", SIGTSTP
);
6312 parse_signal ("cont", SIGCONT
);
6315 parse_signal ("chld", SIGCHLD
);
6318 parse_signal ("ttin", SIGTTIN
);
6321 parse_signal ("ttou", SIGTTOU
);
6324 parse_signal ("io", SIGIO
);
6327 parse_signal ("xcpu", SIGXCPU
);
6330 parse_signal ("xfsz", SIGXFSZ
);
6333 parse_signal ("vtalrm", SIGVTALRM
);
6336 parse_signal ("prof", SIGPROF
);
6339 parse_signal ("winch", SIGWINCH
);
6342 parse_signal ("info", SIGINFO
);
6345 error ("Undefined signal name %s", name
);
6350 return make_number (kill (pid
, XINT (sigcode
)));
6353 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6354 doc
: /* Make PROCESS see end-of-file in its input.
6355 EOF comes after any text already sent to it.
6356 PROCESS may be a process, a buffer, the name of a process or buffer, or
6357 nil, indicating the current buffer's process.
6358 If PROCESS is a network connection, or is a process communicating
6359 through a pipe (as opposed to a pty), then you cannot send any more
6360 text to PROCESS after you call this function. */)
6362 Lisp_Object process
;
6365 struct coding_system
*coding
;
6367 if (DATAGRAM_CONN_P (process
))
6370 proc
= get_process (process
);
6371 coding
= proc_encode_coding_system
[XINT (XPROCESS (proc
)->outfd
)];
6373 /* Make sure the process is really alive. */
6374 if (XPROCESS (proc
)->raw_status_new
)
6375 update_status (XPROCESS (proc
));
6376 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6377 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6379 if (CODING_REQUIRE_FLUSHING (coding
))
6381 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6382 send_process (proc
, "", 0, Qnil
);
6386 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6388 if (!NILP (XPROCESS (proc
)->pty_flag
))
6389 send_process (proc
, "\004", 1, Qnil
);
6392 int old_outfd
, new_outfd
;
6394 #ifdef HAVE_SHUTDOWN
6395 /* If this is a network connection, or socketpair is used
6396 for communication with the subprocess, call shutdown to cause EOF.
6397 (In some old system, shutdown to socketpair doesn't work.
6398 Then we just can't win.) */
6399 if (XPROCESS (proc
)->pid
== 0
6400 || XINT (XPROCESS (proc
)->outfd
) == XINT (XPROCESS (proc
)->infd
))
6401 shutdown (XINT (XPROCESS (proc
)->outfd
), 1);
6402 /* In case of socketpair, outfd == infd, so don't close it. */
6403 if (XINT (XPROCESS (proc
)->outfd
) != XINT (XPROCESS (proc
)->infd
))
6404 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6405 #else /* not HAVE_SHUTDOWN */
6406 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6407 #endif /* not HAVE_SHUTDOWN */
6408 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6411 old_outfd
= XINT (XPROCESS (proc
)->outfd
);
6413 if (!proc_encode_coding_system
[new_outfd
])
6414 proc_encode_coding_system
[new_outfd
]
6415 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6416 bcopy (proc_encode_coding_system
[old_outfd
],
6417 proc_encode_coding_system
[new_outfd
],
6418 sizeof (struct coding_system
));
6419 bzero (proc_encode_coding_system
[old_outfd
],
6420 sizeof (struct coding_system
));
6422 XSETINT (XPROCESS (proc
)->outfd
, new_outfd
);
6428 /* Kill all processes associated with `buffer'.
6429 If `buffer' is nil, kill all processes */
6432 kill_buffer_processes (buffer
)
6435 Lisp_Object tail
, proc
;
6437 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6439 proc
= XCDR (XCAR (tail
));
6440 if (GC_PROCESSP (proc
)
6441 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6443 if (NETCONN_P (proc
))
6444 Fdelete_process (proc
);
6445 else if (XINT (XPROCESS (proc
)->infd
) >= 0)
6446 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6451 /* On receipt of a signal that a child status has changed, loop asking
6452 about children with changed statuses until the system says there
6455 All we do is change the status; we do not run sentinels or print
6456 notifications. That is saved for the next time keyboard input is
6457 done, in order to avoid timing errors.
6459 ** WARNING: this can be called during garbage collection.
6460 Therefore, it must not be fooled by the presence of mark bits in
6463 ** USG WARNING: Although it is not obvious from the documentation
6464 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6465 signal() before executing at least one wait(), otherwise the
6466 handler will be called again, resulting in an infinite loop. The
6467 relevant portion of the documentation reads "SIGCLD signals will be
6468 queued and the signal-catching function will be continually
6469 reentered until the queue is empty". Invoking signal() causes the
6470 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6473 ** Malloc WARNING: This should never call malloc either directly or
6474 indirectly; if it does, that is a bug */
6478 sigchld_handler (signo
)
6481 int old_errno
= errno
;
6483 register struct Lisp_Process
*p
;
6484 extern EMACS_TIME
*input_available_clear_time
;
6486 SIGNAL_THREAD_CHECK (signo
);
6490 sigheld
|= sigbit (SIGCHLD
);
6502 #endif /* no WUNTRACED */
6503 /* Keep trying to get a status until we get a definitive result. */
6506 /* For some reason, this sleep() prevents Emacs from sending
6507 loadavg to 5-8(!) for ~10 seconds.
6508 See http://thread.gmane.org/gmane.emacs.devel/67722 or
6509 http://www.google.com/search?q=busyloop+in+sigchld_handler */
6512 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6514 while (pid
< 0 && errno
== EINTR
);
6518 /* PID == 0 means no processes found, PID == -1 means a real
6519 failure. We have done all our job, so return. */
6521 /* USG systems forget handlers when they are used;
6522 must reestablish each time */
6523 #if defined (USG) && !defined (POSIX_SIGNALS)
6524 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6527 sigheld
&= ~sigbit (SIGCHLD
);
6535 #endif /* no WNOHANG */
6537 /* Find the process that signaled us, and record its status. */
6539 /* The process can have been deleted by Fdelete_process. */
6540 for (tail
= deleted_pid_list
; GC_CONSP (tail
); tail
= XCDR (tail
))
6542 Lisp_Object xpid
= XCAR (tail
);
6543 if ((GC_INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6544 || (GC_FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6546 XSETCAR (tail
, Qnil
);
6547 goto sigchld_end_of_loop
;
6551 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6553 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6555 proc
= XCDR (XCAR (tail
));
6556 p
= XPROCESS (proc
);
6557 if (GC_EQ (p
->childp
, Qt
) && p
->pid
== pid
)
6562 /* Look for an asynchronous process whose pid hasn't been filled
6565 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6567 proc
= XCDR (XCAR (tail
));
6568 p
= XPROCESS (proc
);
6574 /* Change the status of the process that was found. */
6577 union { int i
; WAITTYPE wt
; } u
;
6578 int clear_desc_flag
= 0;
6580 XSETINT (p
->tick
, ++process_tick
);
6582 p
->raw_status
= u
.i
;
6583 p
->raw_status_new
= 1;
6585 /* If process has terminated, stop waiting for its output. */
6586 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6587 && XINT (p
->infd
) >= 0)
6588 clear_desc_flag
= 1;
6590 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6591 if (clear_desc_flag
)
6593 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6594 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6597 /* Tell wait_reading_process_output that it needs to wake up and
6599 if (input_available_clear_time
)
6600 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6603 /* There was no asynchronous process found for that pid: we have
6604 a synchronous process. */
6607 synch_process_alive
= 0;
6609 /* Report the status of the synchronous process. */
6611 synch_process_retcode
= WRETCODE (w
);
6612 else if (WIFSIGNALED (w
))
6613 synch_process_termsig
= WTERMSIG (w
);
6615 /* Tell wait_reading_process_output that it needs to wake up and
6617 if (input_available_clear_time
)
6618 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6621 sigchld_end_of_loop
:
6624 /* On some systems, we must return right away.
6625 If any more processes want to signal us, we will
6627 Otherwise (on systems that have WNOHANG), loop around
6628 to use up all the processes that have something to tell us. */
6629 #if (defined WINDOWSNT \
6630 || (defined USG && !defined GNU_LINUX \
6631 && !(defined HPUX && defined WNOHANG)))
6632 #if defined (USG) && ! defined (POSIX_SIGNALS)
6633 signal (signo
, sigchld_handler
);
6637 #endif /* USG, but not HPUX with WNOHANG */
6640 #endif /* SIGCHLD */
6644 exec_sentinel_unwind (data
)
6647 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6652 exec_sentinel_error_handler (error
)
6655 cmd_error_internal (error
, "error in process sentinel: ");
6657 update_echo_area ();
6658 Fsleep_for (make_number (2), Qnil
);
6663 exec_sentinel (proc
, reason
)
6664 Lisp_Object proc
, reason
;
6666 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6667 register struct Lisp_Process
*p
= XPROCESS (proc
);
6668 int count
= SPECPDL_INDEX ();
6669 int outer_running_asynch_code
= running_asynch_code
;
6670 int waiting
= waiting_for_user_input_p
;
6672 if (inhibit_sentinels
)
6675 /* No need to gcpro these, because all we do with them later
6676 is test them for EQness, and none of them should be a string. */
6677 odeactivate
= Vdeactivate_mark
;
6678 XSETBUFFER (obuffer
, current_buffer
);
6679 okeymap
= current_buffer
->keymap
;
6681 sentinel
= p
->sentinel
;
6682 if (NILP (sentinel
))
6685 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6686 assure that it gets restored no matter how the sentinel exits. */
6688 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6689 /* Inhibit quit so that random quits don't screw up a running filter. */
6690 specbind (Qinhibit_quit
, Qt
);
6691 specbind (Qlast_nonmenu_event
, Qt
);
6693 /* In case we get recursively called,
6694 and we already saved the match data nonrecursively,
6695 save the same match data in safely recursive fashion. */
6696 if (outer_running_asynch_code
)
6699 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6700 restore_search_regs ();
6701 record_unwind_save_match_data ();
6702 Fset_match_data (tem
, Qt
);
6705 /* For speed, if a search happens within this code,
6706 save the match data in a special nonrecursive fashion. */
6707 running_asynch_code
= 1;
6709 internal_condition_case_1 (read_process_output_call
,
6711 Fcons (proc
, Fcons (reason
, Qnil
))),
6712 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6713 exec_sentinel_error_handler
);
6715 /* If we saved the match data nonrecursively, restore it now. */
6716 restore_search_regs ();
6717 running_asynch_code
= outer_running_asynch_code
;
6719 Vdeactivate_mark
= odeactivate
;
6721 /* Restore waiting_for_user_input_p as it was
6722 when we were called, in case the filter clobbered it. */
6723 waiting_for_user_input_p
= waiting
;
6726 if (! EQ (Fcurrent_buffer (), obuffer
)
6727 || ! EQ (current_buffer
->keymap
, okeymap
))
6729 /* But do it only if the caller is actually going to read events.
6730 Otherwise there's no need to make him wake up, and it could
6731 cause trouble (for example it would make sit_for return). */
6732 if (waiting_for_user_input_p
== -1)
6733 record_asynch_buffer_change ();
6735 unbind_to (count
, Qnil
);
6738 /* Report all recent events of a change in process status
6739 (either run the sentinel or output a message).
6740 This is usually done while Emacs is waiting for keyboard input
6741 but can be done at other times. */
6744 status_notify (deleting_process
)
6745 struct Lisp_Process
*deleting_process
;
6747 register Lisp_Object proc
, buffer
;
6748 Lisp_Object tail
, msg
;
6749 struct gcpro gcpro1
, gcpro2
;
6753 /* We need to gcpro tail; if read_process_output calls a filter
6754 which deletes a process and removes the cons to which tail points
6755 from Vprocess_alist, and then causes a GC, tail is an unprotected
6759 /* Set this now, so that if new processes are created by sentinels
6760 that we run, we get called again to handle their status changes. */
6761 update_tick
= process_tick
;
6763 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
6766 register struct Lisp_Process
*p
;
6768 proc
= Fcdr (Fcar (tail
));
6769 p
= XPROCESS (proc
);
6771 if (XINT (p
->tick
) != XINT (p
->update_tick
))
6773 XSETINT (p
->update_tick
, XINT (p
->tick
));
6775 /* If process is still active, read any output that remains. */
6776 while (! EQ (p
->filter
, Qt
)
6777 && ! EQ (p
->status
, Qconnect
)
6778 && ! EQ (p
->status
, Qlisten
)
6779 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6780 && XINT (p
->infd
) >= 0
6781 && p
!= deleting_process
6782 && read_process_output (proc
, XINT (p
->infd
)) > 0);
6786 /* Get the text to use for the message. */
6787 if (p
->raw_status_new
)
6789 msg
= status_message (p
);
6791 /* If process is terminated, deactivate it or delete it. */
6793 if (CONSP (p
->status
))
6794 symbol
= XCAR (p
->status
);
6796 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6797 || EQ (symbol
, Qclosed
))
6799 if (delete_exited_processes
)
6800 remove_process (proc
);
6802 deactivate_process (proc
);
6805 /* The actions above may have further incremented p->tick.
6806 So set p->update_tick again
6807 so that an error in the sentinel will not cause
6808 this code to be run again. */
6809 XSETINT (p
->update_tick
, XINT (p
->tick
));
6810 /* Now output the message suitably. */
6811 if (!NILP (p
->sentinel
))
6812 exec_sentinel (proc
, msg
);
6813 /* Don't bother with a message in the buffer
6814 when a process becomes runnable. */
6815 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6817 Lisp_Object ro
, tem
;
6818 struct buffer
*old
= current_buffer
;
6819 int opoint
, opoint_byte
;
6820 int before
, before_byte
;
6822 ro
= XBUFFER (buffer
)->read_only
;
6824 /* Avoid error if buffer is deleted
6825 (probably that's why the process is dead, too) */
6826 if (NILP (XBUFFER (buffer
)->name
))
6828 Fset_buffer (buffer
);
6831 opoint_byte
= PT_BYTE
;
6832 /* Insert new output into buffer
6833 at the current end-of-output marker,
6834 thus preserving logical ordering of input and output. */
6835 if (XMARKER (p
->mark
)->buffer
)
6836 Fgoto_char (p
->mark
);
6838 SET_PT_BOTH (ZV
, ZV_BYTE
);
6841 before_byte
= PT_BYTE
;
6843 tem
= current_buffer
->read_only
;
6844 current_buffer
->read_only
= Qnil
;
6845 insert_string ("\nProcess ");
6846 Finsert (1, &p
->name
);
6847 insert_string (" ");
6849 current_buffer
->read_only
= tem
;
6850 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6852 if (opoint
>= before
)
6853 SET_PT_BOTH (opoint
+ (PT
- before
),
6854 opoint_byte
+ (PT_BYTE
- before_byte
));
6856 SET_PT_BOTH (opoint
, opoint_byte
);
6858 set_buffer_internal (old
);
6863 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6864 redisplay_preserve_echo_area (13);
6870 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6871 Sset_process_coding_system
, 1, 3, 0,
6872 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6873 DECODING will be used to decode subprocess output and ENCODING to
6874 encode subprocess input. */)
6875 (process
, decoding
, encoding
)
6876 register Lisp_Object process
, decoding
, encoding
;
6878 register struct Lisp_Process
*p
;
6880 CHECK_PROCESS (process
);
6881 p
= XPROCESS (process
);
6882 if (XINT (p
->infd
) < 0)
6883 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6884 if (XINT (p
->outfd
) < 0)
6885 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6886 Fcheck_coding_system (decoding
);
6887 Fcheck_coding_system (encoding
);
6889 p
->decode_coding_system
= decoding
;
6890 p
->encode_coding_system
= encoding
;
6891 setup_process_coding_systems (process
);
6896 DEFUN ("process-coding-system",
6897 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6898 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6900 register Lisp_Object process
;
6902 CHECK_PROCESS (process
);
6903 return Fcons (XPROCESS (process
)->decode_coding_system
,
6904 XPROCESS (process
)->encode_coding_system
);
6907 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6908 Sset_process_filter_multibyte
, 2, 2, 0,
6909 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6910 If FLAG is non-nil, the filter is given multibyte strings.
6911 If FLAG is nil, the filter is given unibyte strings. In this case,
6912 all character code conversion except for end-of-line conversion is
6915 Lisp_Object process
, flag
;
6917 register struct Lisp_Process
*p
;
6919 CHECK_PROCESS (process
);
6920 p
= XPROCESS (process
);
6921 p
->filter_multibyte
= flag
;
6922 setup_process_coding_systems (process
);
6927 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6928 Sprocess_filter_multibyte_p
, 1, 1, 0,
6929 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6931 Lisp_Object process
;
6933 register struct Lisp_Process
*p
;
6935 CHECK_PROCESS (process
);
6936 p
= XPROCESS (process
);
6938 return (NILP (p
->filter_multibyte
) ? Qnil
: Qt
);
6943 /* The first time this is called, assume keyboard input comes from DESC
6944 instead of from where we used to expect it.
6945 Subsequent calls mean assume input keyboard can come from DESC
6946 in addition to other places. */
6948 static int add_keyboard_wait_descriptor_called_flag
;
6951 add_keyboard_wait_descriptor (desc
)
6954 if (! add_keyboard_wait_descriptor_called_flag
)
6955 FD_CLR (0, &input_wait_mask
);
6956 add_keyboard_wait_descriptor_called_flag
= 1;
6957 FD_SET (desc
, &input_wait_mask
);
6958 FD_SET (desc
, &non_process_wait_mask
);
6959 if (desc
> max_keyboard_desc
)
6960 max_keyboard_desc
= desc
;
6963 /* From now on, do not expect DESC to give keyboard input. */
6966 delete_keyboard_wait_descriptor (desc
)
6970 int lim
= max_keyboard_desc
;
6972 FD_CLR (desc
, &input_wait_mask
);
6973 FD_CLR (desc
, &non_process_wait_mask
);
6975 if (desc
== max_keyboard_desc
)
6976 for (fd
= 0; fd
< lim
; fd
++)
6977 if (FD_ISSET (fd
, &input_wait_mask
)
6978 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
6979 max_keyboard_desc
= fd
;
6982 /* Return nonzero if *MASK has a bit set
6983 that corresponds to one of the keyboard input descriptors. */
6986 keyboard_bit_set (mask
)
6991 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
6992 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
6993 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7004 inhibit_sentinels
= 0;
7008 if (! noninteractive
|| initialized
)
7010 signal (SIGCHLD
, sigchld_handler
);
7013 FD_ZERO (&input_wait_mask
);
7014 FD_ZERO (&non_keyboard_wait_mask
);
7015 FD_ZERO (&non_process_wait_mask
);
7016 max_process_desc
= 0;
7018 #ifdef NON_BLOCKING_CONNECT
7019 FD_ZERO (&connect_wait_mask
);
7020 num_pending_connects
= 0;
7023 #ifdef ADAPTIVE_READ_BUFFERING
7024 process_output_delay_count
= 0;
7025 process_output_skip
= 0;
7028 FD_SET (0, &input_wait_mask
);
7030 Vprocess_alist
= Qnil
;
7032 deleted_pid_list
= Qnil
;
7034 for (i
= 0; i
< MAXDESC
; i
++)
7036 chan_process
[i
] = Qnil
;
7037 proc_buffered_char
[i
] = -1;
7039 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7040 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7041 #ifdef DATAGRAM_SOCKETS
7042 bzero (datagram_address
, sizeof datagram_address
);
7047 Lisp_Object subfeatures
= Qnil
;
7048 struct socket_options
*sopt
;
7050 #define ADD_SUBFEATURE(key, val) \
7051 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
7053 #ifdef NON_BLOCKING_CONNECT
7054 ADD_SUBFEATURE (QCnowait
, Qt
);
7056 #ifdef DATAGRAM_SOCKETS
7057 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7059 #ifdef HAVE_LOCAL_SOCKETS
7060 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7062 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7064 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7066 #ifdef HAVE_GETSOCKNAME
7067 ADD_SUBFEATURE (QCservice
, Qt
);
7069 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
7070 ADD_SUBFEATURE (QCserver
, Qt
);
7073 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7074 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
7076 Fprovide (intern ("make-network-process"), subfeatures
);
7078 #endif /* HAVE_SOCKETS */
7080 #if defined (DARWIN) || defined (MAC_OSX)
7081 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7082 processes. As such, we only change the default value. */
7085 char *release
= get_operating_system_release();
7086 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7087 && release
[1] == '.')) {
7088 Vprocess_connection_type
= Qnil
;
7097 Qprocessp
= intern ("processp");
7098 staticpro (&Qprocessp
);
7099 Qrun
= intern ("run");
7101 Qstop
= intern ("stop");
7103 Qsignal
= intern ("signal");
7104 staticpro (&Qsignal
);
7106 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7109 Qexit = intern ("exit");
7110 staticpro (&Qexit); */
7112 Qopen
= intern ("open");
7114 Qclosed
= intern ("closed");
7115 staticpro (&Qclosed
);
7116 Qconnect
= intern ("connect");
7117 staticpro (&Qconnect
);
7118 Qfailed
= intern ("failed");
7119 staticpro (&Qfailed
);
7120 Qlisten
= intern ("listen");
7121 staticpro (&Qlisten
);
7122 Qlocal
= intern ("local");
7123 staticpro (&Qlocal
);
7124 Qipv4
= intern ("ipv4");
7127 Qipv6
= intern ("ipv6");
7130 Qdatagram
= intern ("datagram");
7131 staticpro (&Qdatagram
);
7133 QCname
= intern (":name");
7134 staticpro (&QCname
);
7135 QCbuffer
= intern (":buffer");
7136 staticpro (&QCbuffer
);
7137 QChost
= intern (":host");
7138 staticpro (&QChost
);
7139 QCservice
= intern (":service");
7140 staticpro (&QCservice
);
7141 QCtype
= intern (":type");
7142 staticpro (&QCtype
);
7143 QClocal
= intern (":local");
7144 staticpro (&QClocal
);
7145 QCremote
= intern (":remote");
7146 staticpro (&QCremote
);
7147 QCcoding
= intern (":coding");
7148 staticpro (&QCcoding
);
7149 QCserver
= intern (":server");
7150 staticpro (&QCserver
);
7151 QCnowait
= intern (":nowait");
7152 staticpro (&QCnowait
);
7153 QCsentinel
= intern (":sentinel");
7154 staticpro (&QCsentinel
);
7155 QClog
= intern (":log");
7157 QCnoquery
= intern (":noquery");
7158 staticpro (&QCnoquery
);
7159 QCstop
= intern (":stop");
7160 staticpro (&QCstop
);
7161 QCoptions
= intern (":options");
7162 staticpro (&QCoptions
);
7163 QCplist
= intern (":plist");
7164 staticpro (&QCplist
);
7165 QCfilter_multibyte
= intern (":filter-multibyte");
7166 staticpro (&QCfilter_multibyte
);
7168 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
7169 staticpro (&Qlast_nonmenu_event
);
7171 staticpro (&Vprocess_alist
);
7173 staticpro (&deleted_pid_list
);
7176 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7177 doc
: /* *Non-nil means delete processes immediately when they exit.
7178 A value of nil means don't delete them until `list-processes' is run. */);
7180 delete_exited_processes
= 1;
7182 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7183 doc
: /* Control type of device used to communicate with subprocesses.
7184 Values are nil to use a pipe, or t or `pty' to use a pty.
7185 The value has no effect if the system has no ptys or if all ptys are busy:
7186 then a pipe is used in any case.
7187 The value takes effect when `start-process' is called. */);
7188 Vprocess_connection_type
= Qt
;
7190 #ifdef ADAPTIVE_READ_BUFFERING
7191 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7192 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7193 On some systems, when Emacs reads the output from a subprocess, the output data
7194 is read in very small blocks, potentially resulting in very poor performance.
7195 This behavior can be remedied to some extent by setting this variable to a
7196 non-nil value, as it will automatically delay reading from such processes, to
7197 allow them to produce more output before Emacs tries to read it.
7198 If the value is t, the delay is reset after each write to the process; any other
7199 non-nil value means that the delay is not reset on write.
7200 The variable takes effect when `start-process' is called. */);
7201 Vprocess_adaptive_read_buffering
= Qt
;
7204 defsubr (&Sprocessp
);
7205 defsubr (&Sget_process
);
7206 defsubr (&Sget_buffer_process
);
7207 defsubr (&Sdelete_process
);
7208 defsubr (&Sprocess_status
);
7209 defsubr (&Sprocess_exit_status
);
7210 defsubr (&Sprocess_id
);
7211 defsubr (&Sprocess_name
);
7212 defsubr (&Sprocess_tty_name
);
7213 defsubr (&Sprocess_command
);
7214 defsubr (&Sset_process_buffer
);
7215 defsubr (&Sprocess_buffer
);
7216 defsubr (&Sprocess_mark
);
7217 defsubr (&Sset_process_filter
);
7218 defsubr (&Sprocess_filter
);
7219 defsubr (&Sset_process_sentinel
);
7220 defsubr (&Sprocess_sentinel
);
7221 defsubr (&Sset_process_window_size
);
7222 defsubr (&Sset_process_inherit_coding_system_flag
);
7223 defsubr (&Sprocess_inherit_coding_system_flag
);
7224 defsubr (&Sset_process_query_on_exit_flag
);
7225 defsubr (&Sprocess_query_on_exit_flag
);
7226 defsubr (&Sprocess_contact
);
7227 defsubr (&Sprocess_plist
);
7228 defsubr (&Sset_process_plist
);
7229 defsubr (&Slist_processes
);
7230 defsubr (&Sprocess_list
);
7231 defsubr (&Sstart_process
);
7233 defsubr (&Sset_network_process_option
);
7234 defsubr (&Smake_network_process
);
7235 defsubr (&Sformat_network_address
);
7236 #endif /* HAVE_SOCKETS */
7237 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7239 defsubr (&Snetwork_interface_list
);
7241 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7242 defsubr (&Snetwork_interface_info
);
7244 #endif /* HAVE_SOCKETS ... */
7245 #ifdef DATAGRAM_SOCKETS
7246 defsubr (&Sprocess_datagram_address
);
7247 defsubr (&Sset_process_datagram_address
);
7249 defsubr (&Saccept_process_output
);
7250 defsubr (&Sprocess_send_region
);
7251 defsubr (&Sprocess_send_string
);
7252 defsubr (&Sinterrupt_process
);
7253 defsubr (&Skill_process
);
7254 defsubr (&Squit_process
);
7255 defsubr (&Sstop_process
);
7256 defsubr (&Scontinue_process
);
7257 defsubr (&Sprocess_running_child_p
);
7258 defsubr (&Sprocess_send_eof
);
7259 defsubr (&Ssignal_process
);
7260 defsubr (&Swaiting_for_user_input_p
);
7261 /* defsubr (&Sprocess_connection); */
7262 defsubr (&Sset_process_coding_system
);
7263 defsubr (&Sprocess_coding_system
);
7264 defsubr (&Sset_process_filter_multibyte
);
7265 defsubr (&Sprocess_filter_multibyte_p
);
7269 #else /* not subprocesses */
7271 #include <sys/types.h>
7275 #include "systime.h"
7276 #include "charset.h"
7278 #include "termopts.h"
7279 #include "sysselect.h"
7281 extern int frame_garbaged
;
7283 extern EMACS_TIME
timer_check ();
7284 extern int timers_run
;
7288 /* As described above, except assuming that there are no subprocesses:
7290 Wait for timeout to elapse and/or keyboard input to be available.
7293 timeout in seconds, or
7294 zero for no limit, or
7295 -1 means gobble data immediately available but don't wait for any.
7297 read_kbd is a Lisp_Object:
7298 0 to ignore keyboard input, or
7299 1 to return when input is available, or
7300 -1 means caller will actually read the input, so don't throw to
7303 see full version for other parameters. We know that wait_proc will
7304 always be NULL, since `subprocesses' isn't defined.
7306 do_display != 0 means redisplay should be done to show subprocess
7307 output that arrives.
7309 Return true iff we received input from any process. */
7312 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7313 wait_for_cell
, wait_proc
, just_wait_proc
)
7314 int time_limit
, microsecs
, read_kbd
, do_display
;
7315 Lisp_Object wait_for_cell
;
7316 struct Lisp_Process
*wait_proc
;
7320 EMACS_TIME end_time
, timeout
;
7321 SELECT_TYPE waitchannels
;
7324 /* What does time_limit really mean? */
7325 if (time_limit
|| microsecs
)
7327 EMACS_GET_TIME (end_time
);
7328 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7329 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7332 /* Turn off periodic alarms (in case they are in use)
7333 and then turn off any other atimers,
7334 because the select emulator uses alarms. */
7336 turn_on_atimers (0);
7340 int timeout_reduced_for_timers
= 0;
7342 /* If calling from keyboard input, do not quit
7343 since we want to return C-g as an input character.
7344 Otherwise, do pending quit if requested. */
7348 /* Exit now if the cell we're waiting for became non-nil. */
7349 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7352 /* Compute time from now till when time limit is up */
7353 /* Exit if already run out */
7354 if (time_limit
== -1)
7356 /* -1 specified for timeout means
7357 gobble output available now
7358 but don't wait at all. */
7360 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7362 else if (time_limit
|| microsecs
)
7364 EMACS_GET_TIME (timeout
);
7365 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7366 if (EMACS_TIME_NEG_P (timeout
))
7371 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7374 /* If our caller will not immediately handle keyboard events,
7375 run timer events directly.
7376 (Callers that will immediately read keyboard events
7377 call timer_delay on their own.) */
7378 if (NILP (wait_for_cell
))
7380 EMACS_TIME timer_delay
;
7384 int old_timers_run
= timers_run
;
7385 timer_delay
= timer_check (1);
7386 if (timers_run
!= old_timers_run
&& do_display
)
7387 /* We must retry, since a timer may have requeued itself
7388 and that could alter the time delay. */
7389 redisplay_preserve_echo_area (14);
7393 while (!detect_input_pending ());
7395 /* If there is unread keyboard input, also return. */
7397 && requeued_events_pending_p ())
7400 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7402 EMACS_TIME difference
;
7403 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7404 if (EMACS_TIME_NEG_P (difference
))
7406 timeout
= timer_delay
;
7407 timeout_reduced_for_timers
= 1;
7412 /* Cause C-g and alarm signals to take immediate action,
7413 and cause input available signals to zero out timeout. */
7415 set_waiting_for_input (&timeout
);
7417 /* Wait till there is something to do. */
7419 if (! read_kbd
&& NILP (wait_for_cell
))
7420 FD_ZERO (&waitchannels
);
7422 FD_SET (0, &waitchannels
);
7424 /* If a frame has been newly mapped and needs updating,
7425 reprocess its display stuff. */
7426 if (frame_garbaged
&& do_display
)
7428 clear_waiting_for_input ();
7429 redisplay_preserve_echo_area (15);
7431 set_waiting_for_input (&timeout
);
7434 if (read_kbd
&& detect_input_pending ())
7437 FD_ZERO (&waitchannels
);
7440 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7445 /* Make C-g and alarm signals set flags again */
7446 clear_waiting_for_input ();
7448 /* If we woke up due to SIGWINCH, actually change size now. */
7449 do_pending_window_change (0);
7451 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7452 /* We waited the full specified time, so return now. */
7457 /* If the system call was interrupted, then go around the
7459 if (xerrno
== EINTR
)
7460 FD_ZERO (&waitchannels
);
7462 error ("select error: %s", emacs_strerror (xerrno
));
7465 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7466 /* System sometimes fails to deliver SIGIO. */
7467 kill (getpid (), SIGIO
);
7470 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7471 kill (getpid (), SIGIO
);
7474 /* Check for keyboard input */
7477 && detect_input_pending_run_timers (do_display
))
7479 swallow_events (do_display
);
7480 if (detect_input_pending_run_timers (do_display
))
7484 /* If there is unread keyboard input, also return. */
7486 && requeued_events_pending_p ())
7489 /* If wait_for_cell. check for keyboard input
7490 but don't run any timers.
7491 ??? (It seems wrong to me to check for keyboard
7492 input at all when wait_for_cell, but the code
7493 has been this way since July 1994.
7494 Try changing this after version 19.31.) */
7495 if (! NILP (wait_for_cell
)
7496 && detect_input_pending ())
7498 swallow_events (do_display
);
7499 if (detect_input_pending ())
7503 /* Exit now if the cell we're waiting for became non-nil. */
7504 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7514 /* Don't confuse make-docfile by having two doc strings for this function.
7515 make-docfile does not pay attention to #if, for good reason! */
7516 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7519 register Lisp_Object name
;
7524 /* Don't confuse make-docfile by having two doc strings for this function.
7525 make-docfile does not pay attention to #if, for good reason! */
7526 DEFUN ("process-inherit-coding-system-flag",
7527 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7531 register Lisp_Object process
;
7533 /* Ignore the argument and return the value of
7534 inherit-process-coding-system. */
7535 return inherit_process_coding_system
? Qt
: Qnil
;
7538 /* Kill all processes associated with `buffer'.
7539 If `buffer' is nil, kill all processes.
7540 Since we have no subprocesses, this does nothing. */
7543 kill_buffer_processes (buffer
)
7556 QCtype
= intern (":type");
7557 staticpro (&QCtype
);
7559 defsubr (&Sget_buffer_process
);
7560 defsubr (&Sprocess_inherit_coding_system_flag
);
7564 #endif /* not subprocesses */
7566 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7567 (do not change this comment) */