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
142 #include "termhooks.h"
143 #include "termopts.h"
144 #include "commands.h"
145 #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 /* Mask for the gpm mouse input descriptor. */
341 static SELECT_TYPE gpm_wait_mask
;
343 #ifdef NON_BLOCKING_CONNECT
344 /* Mask of bits indicating the descriptors that we wait for connect to
345 complete on. Once they complete, they are removed from this mask
346 and added to the input_wait_mask and non_keyboard_wait_mask. */
348 static SELECT_TYPE connect_wait_mask
;
350 /* Number of bits set in connect_wait_mask. */
351 static int num_pending_connects
;
353 #define IF_NON_BLOCKING_CONNECT(s) s
355 #define IF_NON_BLOCKING_CONNECT(s)
358 /* The largest descriptor currently in use for a process object. */
359 static int max_process_desc
;
361 /* The largest descriptor currently in use for keyboard input. */
362 static int max_keyboard_desc
;
364 /* The largest descriptor currently in use for gpm mouse input. */
365 static int max_gpm_desc
;
367 /* Nonzero means delete a process right away if it exits. */
368 static int delete_exited_processes
;
370 /* Indexed by descriptor, gives the process (if any) for that descriptor */
371 Lisp_Object chan_process
[MAXDESC
];
373 /* Alist of elements (NAME . PROCESS) */
374 Lisp_Object Vprocess_alist
;
376 /* Buffered-ahead input char from process, indexed by channel.
377 -1 means empty (no char is buffered).
378 Used on sys V where the only way to tell if there is any
379 output from the process is to read at least one char.
380 Always -1 on systems that support FIONREAD. */
382 /* Don't make static; need to access externally. */
383 int proc_buffered_char
[MAXDESC
];
385 /* Table of `struct coding-system' for each process. */
386 static struct coding_system
*proc_decode_coding_system
[MAXDESC
];
387 static struct coding_system
*proc_encode_coding_system
[MAXDESC
];
389 #ifdef DATAGRAM_SOCKETS
390 /* Table of `partner address' for datagram sockets. */
391 struct sockaddr_and_len
{
394 } datagram_address
[MAXDESC
];
395 #define DATAGRAM_CHAN_P(chan) (datagram_address[chan].sa != 0)
396 #define DATAGRAM_CONN_P(proc) (PROCESSP (proc) && datagram_address[XINT (XPROCESS (proc)->infd)].sa != 0)
398 #define DATAGRAM_CHAN_P(chan) (0)
399 #define DATAGRAM_CONN_P(proc) (0)
402 /* Maximum number of bytes to send to a pty without an eof. */
403 static int pty_max_bytes
;
405 /* Nonzero means don't run process sentinels. This is used
407 int inhibit_sentinels
;
413 /* The file name of the pty opened by allocate_pty. */
415 static char pty_name
[24];
418 /* Compute the Lisp form of the process status, p->status, from
419 the numeric status that was returned by `wait'. */
421 static Lisp_Object
status_convert ();
425 struct Lisp_Process
*p
;
427 union { int i
; WAITTYPE wt
; } u
;
428 eassert (p
->raw_status_new
);
430 p
->status
= status_convert (u
.wt
);
431 p
->raw_status_new
= 0;
434 /* Convert a process status word in Unix format to
435 the list that we use internally. */
442 return Fcons (Qstop
, Fcons (make_number (WSTOPSIG (w
)), Qnil
));
443 else if (WIFEXITED (w
))
444 return Fcons (Qexit
, Fcons (make_number (WRETCODE (w
)),
445 WCOREDUMP (w
) ? Qt
: Qnil
));
446 else if (WIFSIGNALED (w
))
447 return Fcons (Qsignal
, Fcons (make_number (WTERMSIG (w
)),
448 WCOREDUMP (w
) ? Qt
: Qnil
));
453 /* Given a status-list, extract the three pieces of information
454 and store them individually through the three pointers. */
457 decode_status (l
, symbol
, code
, coredump
)
475 *code
= XFASTINT (XCAR (tem
));
477 *coredump
= !NILP (tem
);
481 /* Return a string describing a process status list. */
485 struct Lisp_Process
*p
;
487 Lisp_Object status
= p
->status
;
490 Lisp_Object string
, string2
;
492 decode_status (status
, &symbol
, &code
, &coredump
);
494 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qstop
))
497 synchronize_system_messages_locale ();
498 signame
= strsignal (code
);
501 string
= build_string (signame
);
502 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
503 SSET (string
, 0, DOWNCASE (SREF (string
, 0)));
504 return concat2 (string
, string2
);
506 else if (EQ (symbol
, Qexit
))
509 return build_string (code
== 0 ? "deleted\n" : "connection broken by remote peer\n");
511 return build_string ("finished\n");
512 string
= Fnumber_to_string (make_number (code
));
513 string2
= build_string (coredump
? " (core dumped)\n" : "\n");
514 return concat3 (build_string ("exited abnormally with code "),
517 else if (EQ (symbol
, Qfailed
))
519 string
= Fnumber_to_string (make_number (code
));
520 string2
= build_string ("\n");
521 return concat3 (build_string ("failed with code "),
525 return Fcopy_sequence (Fsymbol_name (symbol
));
530 /* Open an available pty, returning a file descriptor.
531 Return -1 on failure.
532 The file name of the terminal corresponding to the pty
533 is left in the variable pty_name. */
544 for (c
= FIRST_PTY_LETTER
; c
<= 'z'; c
++)
545 for (i
= 0; i
< 16; i
++)
548 struct stat stb
; /* Used in some PTY_OPEN. */
549 #ifdef PTY_NAME_SPRINTF
552 sprintf (pty_name
, "/dev/pty%c%x", c
, i
);
553 #endif /* no PTY_NAME_SPRINTF */
557 #else /* no PTY_OPEN */
560 /* Unusual IRIS code */
561 *ptyv
= emacs_open ("/dev/ptc", O_RDWR
| O_NDELAY
, 0);
564 if (fstat (fd
, &stb
) < 0)
566 # else /* not IRIS */
567 { /* Some systems name their pseudoterminals so that there are gaps in
568 the usual sequence - for example, on HP9000/S700 systems, there
569 are no pseudoterminals with names ending in 'f'. So we wait for
570 three failures in a row before deciding that we've reached the
572 int failed_count
= 0;
574 if (stat (pty_name
, &stb
) < 0)
577 if (failed_count
>= 3)
584 fd
= emacs_open (pty_name
, O_RDWR
| O_NONBLOCK
, 0);
586 fd
= emacs_open (pty_name
, O_RDWR
| O_NDELAY
, 0);
588 # endif /* not IRIS */
590 #endif /* no PTY_OPEN */
594 /* check to make certain that both sides are available
595 this avoids a nasty yet stupid bug in rlogins */
596 #ifdef PTY_TTY_NAME_SPRINTF
599 sprintf (pty_name
, "/dev/tty%c%x", c
, i
);
600 #endif /* no PTY_TTY_NAME_SPRINTF */
602 if (access (pty_name
, 6) != 0)
605 # if !defined(IRIS) && !defined(__sgi)
611 #endif /* not UNIPLUS */
618 #endif /* HAVE_PTYS */
624 register Lisp_Object val
, tem
, name1
;
625 register struct Lisp_Process
*p
;
629 p
= allocate_process ();
631 XSETINT (p
->infd
, -1);
632 XSETINT (p
->outfd
, -1);
633 XSETFASTINT (p
->tick
, 0);
634 XSETFASTINT (p
->update_tick
, 0);
636 p
->raw_status_new
= 0;
638 p
->mark
= Fmake_marker ();
640 #ifdef ADAPTIVE_READ_BUFFERING
641 p
->adaptive_read_buffering
= Qnil
;
642 XSETFASTINT (p
->read_output_delay
, 0);
643 p
->read_output_skip
= Qnil
;
646 /* If name is already in use, modify it until it is unused. */
651 tem
= Fget_process (name1
);
652 if (NILP (tem
)) break;
653 sprintf (suffix
, "<%d>", i
);
654 name1
= concat2 (name
, build_string (suffix
));
658 XSETPROCESS (val
, p
);
659 Vprocess_alist
= Fcons (Fcons (name
, val
), Vprocess_alist
);
664 remove_process (proc
)
665 register Lisp_Object proc
;
667 register Lisp_Object pair
;
669 pair
= Frassq (proc
, Vprocess_alist
);
670 Vprocess_alist
= Fdelq (pair
, Vprocess_alist
);
672 deactivate_process (proc
);
675 /* Setup coding systems of PROCESS. */
678 setup_process_coding_systems (process
)
681 struct Lisp_Process
*p
= XPROCESS (process
);
682 int inch
= XINT (p
->infd
);
683 int outch
= XINT (p
->outfd
);
685 if (inch
< 0 || outch
< 0)
688 if (!proc_decode_coding_system
[inch
])
689 proc_decode_coding_system
[inch
]
690 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
691 setup_coding_system (p
->decode_coding_system
,
692 proc_decode_coding_system
[inch
]);
693 if (! NILP (p
->filter
))
695 if (NILP (p
->filter_multibyte
))
696 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
698 else if (BUFFERP (p
->buffer
))
700 if (NILP (XBUFFER (p
->buffer
)->enable_multibyte_characters
))
701 setup_raw_text_coding_system (proc_decode_coding_system
[inch
]);
704 if (!proc_encode_coding_system
[outch
])
705 proc_encode_coding_system
[outch
]
706 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
707 setup_coding_system (p
->encode_coding_system
,
708 proc_encode_coding_system
[outch
]);
709 if (proc_encode_coding_system
[outch
]->eol_type
== CODING_EOL_UNDECIDED
)
710 proc_encode_coding_system
[outch
]->eol_type
= system_eol_type
;
713 DEFUN ("processp", Fprocessp
, Sprocessp
, 1, 1, 0,
714 doc
: /* Return t if OBJECT is a process. */)
718 return PROCESSP (object
) ? Qt
: Qnil
;
721 DEFUN ("get-process", Fget_process
, Sget_process
, 1, 1, 0,
722 doc
: /* Return the process named NAME, or nil if there is none. */)
724 register Lisp_Object name
;
729 return Fcdr (Fassoc (name
, Vprocess_alist
));
732 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
733 doc
: /* Return the (or a) process associated with BUFFER.
734 BUFFER may be a buffer or the name of one. */)
736 register Lisp_Object buffer
;
738 register Lisp_Object buf
, tail
, proc
;
740 if (NILP (buffer
)) return Qnil
;
741 buf
= Fget_buffer (buffer
);
742 if (NILP (buf
)) return Qnil
;
744 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
746 proc
= Fcdr (Fcar (tail
));
747 if (PROCESSP (proc
) && EQ (XPROCESS (proc
)->buffer
, buf
))
753 /* This is how commands for the user decode process arguments. It
754 accepts a process, a process name, a buffer, a buffer name, or nil.
755 Buffers denote the first process in the buffer, and nil denotes the
760 register Lisp_Object name
;
762 register Lisp_Object proc
, obj
;
765 obj
= Fget_process (name
);
767 obj
= Fget_buffer (name
);
769 error ("Process %s does not exist", SDATA (name
));
771 else if (NILP (name
))
772 obj
= Fcurrent_buffer ();
776 /* Now obj should be either a buffer object or a process object.
780 proc
= Fget_buffer_process (obj
);
782 error ("Buffer %s has no process", SDATA (XBUFFER (obj
)->name
));
794 /* Fdelete_process promises to immediately forget about the process, but in
795 reality, Emacs needs to remember those processes until they have been
796 treated by sigchld_handler; otherwise this handler would consider the
797 process as being synchronous and say that the synchronous process is
799 static Lisp_Object deleted_pid_list
;
802 DEFUN ("delete-process", Fdelete_process
, Sdelete_process
, 1, 1, 0,
803 doc
: /* Delete PROCESS: kill it and forget about it immediately.
804 PROCESS may be a process, a buffer, the name of a process or buffer, or
805 nil, indicating the current buffer's process. */)
807 register Lisp_Object process
;
809 register struct Lisp_Process
*p
;
811 process
= get_process (process
);
812 p
= XPROCESS (process
);
814 p
->raw_status_new
= 0;
817 p
->status
= Fcons (Qexit
, Fcons (make_number (0), Qnil
));
818 XSETINT (p
->tick
, ++process_tick
);
821 else if (XINT (p
->infd
) >= 0)
825 /* Assignment to EMACS_INT stops GCC whining about limited range
827 EMACS_INT pid
= p
->pid
;
829 /* No problem storing the pid here, as it is still in Vprocess_alist. */
830 deleted_pid_list
= Fcons (make_fixnum_or_float (pid
),
831 /* GC treated elements set to nil. */
832 Fdelq (Qnil
, deleted_pid_list
));
833 /* If the process has already signaled, remove it from the list. */
834 if (p
->raw_status_new
)
837 if (CONSP (p
->status
))
838 symbol
= XCAR (p
->status
);
839 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
))
841 = Fdelete (make_fixnum_or_float (pid
), deleted_pid_list
);
845 Fkill_process (process
, Qnil
);
846 /* Do this now, since remove_process will make sigchld_handler do nothing. */
848 = Fcons (Qsignal
, Fcons (make_number (SIGKILL
), Qnil
));
849 XSETINT (p
->tick
, ++process_tick
);
853 remove_process (process
);
857 DEFUN ("process-status", Fprocess_status
, Sprocess_status
, 1, 1, 0,
858 doc
: /* Return the status of PROCESS.
859 The returned value is one of the following symbols:
860 run -- for a process that is running.
861 stop -- for a process stopped but continuable.
862 exit -- for a process that has exited.
863 signal -- for a process that has got a fatal signal.
864 open -- for a network stream connection that is open.
865 listen -- for a network stream server that is listening.
866 closed -- for a network stream connection that is closed.
867 connect -- when waiting for a non-blocking connection to complete.
868 failed -- when a non-blocking connection has failed.
869 nil -- if arg is a process name and no such process exists.
870 PROCESS may be a process, a buffer, the name of a process, or
871 nil, indicating the current buffer's process. */)
873 register Lisp_Object process
;
875 register struct Lisp_Process
*p
;
876 register Lisp_Object status
;
878 if (STRINGP (process
))
879 process
= Fget_process (process
);
881 process
= get_process (process
);
886 p
= XPROCESS (process
);
887 if (p
->raw_status_new
)
891 status
= XCAR (status
);
894 if (EQ (status
, Qexit
))
896 else if (EQ (p
->command
, Qt
))
898 else if (EQ (status
, Qrun
))
904 DEFUN ("process-exit-status", Fprocess_exit_status
, Sprocess_exit_status
,
906 doc
: /* Return the exit status of PROCESS or the signal number that killed it.
907 If PROCESS has not yet exited or died, return 0. */)
909 register Lisp_Object process
;
911 CHECK_PROCESS (process
);
912 if (XPROCESS (process
)->raw_status_new
)
913 update_status (XPROCESS (process
));
914 if (CONSP (XPROCESS (process
)->status
))
915 return XCAR (XCDR (XPROCESS (process
)->status
));
916 return make_number (0);
919 DEFUN ("process-id", Fprocess_id
, Sprocess_id
, 1, 1, 0,
920 doc
: /* Return the process id of PROCESS.
921 This is the pid of the external process which PROCESS uses or talks to.
922 For a network connection, this value is nil. */)
924 register Lisp_Object process
;
926 /* Assignment to EMACS_INT stops GCC whining about limited range of
930 CHECK_PROCESS (process
);
931 pid
= XPROCESS (process
)->pid
;
932 return (pid
? make_fixnum_or_float (pid
) : Qnil
);
935 DEFUN ("process-name", Fprocess_name
, Sprocess_name
, 1, 1, 0,
936 doc
: /* Return the name of PROCESS, as a string.
937 This is the name of the program invoked in PROCESS,
938 possibly modified to make it unique among process names. */)
940 register Lisp_Object process
;
942 CHECK_PROCESS (process
);
943 return XPROCESS (process
)->name
;
946 DEFUN ("process-command", Fprocess_command
, Sprocess_command
, 1, 1, 0,
947 doc
: /* Return the command that was executed to start PROCESS.
948 This is a list of strings, the first string being the program executed
949 and the rest of the strings being the arguments given to it.
950 For a non-child channel, this is nil. */)
952 register Lisp_Object process
;
954 CHECK_PROCESS (process
);
955 return XPROCESS (process
)->command
;
958 DEFUN ("process-tty-name", Fprocess_tty_name
, Sprocess_tty_name
, 1, 1, 0,
959 doc
: /* Return the name of the terminal PROCESS uses, or nil if none.
960 This is the terminal that the process itself reads and writes on,
961 not the name of the pty that Emacs uses to talk with that terminal. */)
963 register Lisp_Object process
;
965 CHECK_PROCESS (process
);
966 return XPROCESS (process
)->tty_name
;
969 DEFUN ("set-process-buffer", Fset_process_buffer
, Sset_process_buffer
,
971 doc
: /* Set buffer associated with PROCESS to BUFFER (a buffer, or nil). */)
973 register Lisp_Object process
, buffer
;
975 struct Lisp_Process
*p
;
977 CHECK_PROCESS (process
);
979 CHECK_BUFFER (buffer
);
980 p
= XPROCESS (process
);
983 p
->childp
= Fplist_put (p
->childp
, QCbuffer
, buffer
);
984 setup_process_coding_systems (process
);
988 DEFUN ("process-buffer", Fprocess_buffer
, Sprocess_buffer
,
990 doc
: /* Return the buffer PROCESS is associated with.
991 Output from PROCESS is inserted in this buffer unless PROCESS has a filter. */)
993 register Lisp_Object process
;
995 CHECK_PROCESS (process
);
996 return XPROCESS (process
)->buffer
;
999 DEFUN ("process-mark", Fprocess_mark
, Sprocess_mark
,
1001 doc
: /* Return the marker for the end of the last output from PROCESS. */)
1003 register Lisp_Object process
;
1005 CHECK_PROCESS (process
);
1006 return XPROCESS (process
)->mark
;
1009 DEFUN ("set-process-filter", Fset_process_filter
, Sset_process_filter
,
1011 doc
: /* Give PROCESS the filter function FILTER; nil means no filter.
1012 t means stop accepting output from the process.
1014 When a process has a filter, its buffer is not used for output.
1015 Instead, each time it does output, the entire string of output is
1016 passed to the filter.
1018 The filter gets two arguments: the process and the string of output.
1019 The string argument is normally a multibyte string, except:
1020 - if the process' input coding system is no-conversion or raw-text,
1021 it is a unibyte string (the non-converted input), or else
1022 - if `default-enable-multibyte-characters' is nil, it is a unibyte
1023 string (the result of converting the decoded input multibyte
1024 string to unibyte with `string-make-unibyte'). */)
1026 register Lisp_Object process
, filter
;
1028 struct Lisp_Process
*p
;
1030 CHECK_PROCESS (process
);
1031 p
= XPROCESS (process
);
1033 /* Don't signal an error if the process' input file descriptor
1034 is closed. This could make debugging Lisp more difficult,
1035 for example when doing something like
1037 (setq process (start-process ...))
1039 (set-process-filter process ...) */
1041 if (XINT (p
->infd
) >= 0)
1043 if (EQ (filter
, Qt
) && !EQ (p
->status
, Qlisten
))
1045 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
1046 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
1048 else if (EQ (p
->filter
, Qt
)
1049 && !EQ (p
->command
, Qt
)) /* Network process not stopped. */
1051 FD_SET (XINT (p
->infd
), &input_wait_mask
);
1052 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
1058 p
->childp
= Fplist_put (p
->childp
, QCfilter
, filter
);
1059 setup_process_coding_systems (process
);
1063 DEFUN ("process-filter", Fprocess_filter
, Sprocess_filter
,
1065 doc
: /* Returns the filter function of PROCESS; nil if none.
1066 See `set-process-filter' for more info on filter functions. */)
1068 register Lisp_Object process
;
1070 CHECK_PROCESS (process
);
1071 return XPROCESS (process
)->filter
;
1074 DEFUN ("set-process-sentinel", Fset_process_sentinel
, Sset_process_sentinel
,
1076 doc
: /* Give PROCESS the sentinel SENTINEL; nil for none.
1077 The sentinel is called as a function when the process changes state.
1078 It gets two arguments: the process, and a string describing the change. */)
1080 register Lisp_Object process
, sentinel
;
1082 struct Lisp_Process
*p
;
1084 CHECK_PROCESS (process
);
1085 p
= XPROCESS (process
);
1087 p
->sentinel
= sentinel
;
1089 p
->childp
= Fplist_put (p
->childp
, QCsentinel
, sentinel
);
1093 DEFUN ("process-sentinel", Fprocess_sentinel
, Sprocess_sentinel
,
1095 doc
: /* Return the sentinel of PROCESS; nil if none.
1096 See `set-process-sentinel' for more info on sentinels. */)
1098 register Lisp_Object process
;
1100 CHECK_PROCESS (process
);
1101 return XPROCESS (process
)->sentinel
;
1104 DEFUN ("set-process-window-size", Fset_process_window_size
,
1105 Sset_process_window_size
, 3, 3, 0,
1106 doc
: /* Tell PROCESS that it has logical window size HEIGHT and WIDTH. */)
1107 (process
, height
, width
)
1108 register Lisp_Object process
, height
, width
;
1110 CHECK_PROCESS (process
);
1111 CHECK_NATNUM (height
);
1112 CHECK_NATNUM (width
);
1114 if (XINT (XPROCESS (process
)->infd
) < 0
1115 || set_window_size (XINT (XPROCESS (process
)->infd
),
1116 XINT (height
), XINT (width
)) <= 0)
1122 DEFUN ("set-process-inherit-coding-system-flag",
1123 Fset_process_inherit_coding_system_flag
,
1124 Sset_process_inherit_coding_system_flag
, 2, 2, 0,
1125 doc
: /* Determine whether buffer of PROCESS will inherit coding-system.
1126 If the second argument FLAG is non-nil, then the variable
1127 `buffer-file-coding-system' of the buffer associated with PROCESS
1128 will be bound to the value of the coding system used to decode
1131 This is useful when the coding system specified for the process buffer
1132 leaves either the character code conversion or the end-of-line conversion
1133 unspecified, or if the coding system used to decode the process output
1134 is more appropriate for saving the process buffer.
1136 Binding the variable `inherit-process-coding-system' to non-nil before
1137 starting the process is an alternative way of setting the inherit flag
1138 for the process which will run. */)
1140 register Lisp_Object process
, flag
;
1142 CHECK_PROCESS (process
);
1143 XPROCESS (process
)->inherit_coding_system_flag
= flag
;
1147 DEFUN ("process-inherit-coding-system-flag",
1148 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
1150 doc
: /* Return the value of inherit-coding-system flag for PROCESS.
1151 If this flag is t, `buffer-file-coding-system' of the buffer
1152 associated with PROCESS will inherit the coding system used to decode
1153 the process output. */)
1155 register Lisp_Object process
;
1157 CHECK_PROCESS (process
);
1158 return XPROCESS (process
)->inherit_coding_system_flag
;
1161 DEFUN ("set-process-query-on-exit-flag",
1162 Fset_process_query_on_exit_flag
, Sset_process_query_on_exit_flag
,
1164 doc
: /* Specify if query is needed for PROCESS when Emacs is exited.
1165 If the second argument FLAG is non-nil, Emacs will query the user before
1166 exiting if PROCESS is running. */)
1168 register Lisp_Object process
, flag
;
1170 CHECK_PROCESS (process
);
1171 XPROCESS (process
)->kill_without_query
= Fnull (flag
);
1175 DEFUN ("process-query-on-exit-flag",
1176 Fprocess_query_on_exit_flag
, Sprocess_query_on_exit_flag
,
1178 doc
: /* Return the current value of query-on-exit flag for PROCESS. */)
1180 register Lisp_Object process
;
1182 CHECK_PROCESS (process
);
1183 return Fnull (XPROCESS (process
)->kill_without_query
);
1186 #ifdef DATAGRAM_SOCKETS
1187 Lisp_Object
Fprocess_datagram_address ();
1190 DEFUN ("process-contact", Fprocess_contact
, Sprocess_contact
,
1192 doc
: /* Return the contact info of PROCESS; t for a real child.
1193 For a net connection, the value depends on the optional KEY arg.
1194 If KEY is nil, value is a cons cell of the form (HOST SERVICE),
1195 if KEY is t, the complete contact information for the connection is
1196 returned, else the specific value for the keyword KEY is returned.
1197 See `make-network-process' for a list of keywords. */)
1199 register Lisp_Object process
, key
;
1201 Lisp_Object contact
;
1203 CHECK_PROCESS (process
);
1204 contact
= XPROCESS (process
)->childp
;
1206 #ifdef DATAGRAM_SOCKETS
1207 if (DATAGRAM_CONN_P (process
)
1208 && (EQ (key
, Qt
) || EQ (key
, QCremote
)))
1209 contact
= Fplist_put (contact
, QCremote
,
1210 Fprocess_datagram_address (process
));
1213 if (!NETCONN_P (process
) || EQ (key
, Qt
))
1216 return Fcons (Fplist_get (contact
, QChost
),
1217 Fcons (Fplist_get (contact
, QCservice
), Qnil
));
1218 return Fplist_get (contact
, key
);
1221 DEFUN ("process-plist", Fprocess_plist
, Sprocess_plist
,
1223 doc
: /* Return the plist of PROCESS. */)
1225 register Lisp_Object process
;
1227 CHECK_PROCESS (process
);
1228 return XPROCESS (process
)->plist
;
1231 DEFUN ("set-process-plist", Fset_process_plist
, Sset_process_plist
,
1233 doc
: /* Replace the plist of PROCESS with PLIST. Returns PLIST. */)
1235 register Lisp_Object process
, plist
;
1237 CHECK_PROCESS (process
);
1240 XPROCESS (process
)->plist
= plist
;
1244 #if 0 /* Turned off because we don't currently record this info
1245 in the process. Perhaps add it. */
1246 DEFUN ("process-connection", Fprocess_connection
, Sprocess_connection
, 1, 1, 0,
1247 doc
: /* Return the connection type of PROCESS.
1248 The value is nil for a pipe, t or `pty' for a pty, or `stream' for
1249 a socket connection. */)
1251 Lisp_Object process
;
1253 return XPROCESS (process
)->type
;
1258 DEFUN ("format-network-address", Fformat_network_address
, Sformat_network_address
,
1260 doc
: /* Convert network ADDRESS from internal format to a string.
1261 A 4 or 5 element vector represents an IPv4 address (with port number).
1262 An 8 or 9 element vector represents an IPv6 address (with port number).
1263 If optional second argument OMIT-PORT is non-nil, don't include a port
1264 number in the string, even when present in ADDRESS.
1265 Returns nil if format of ADDRESS is invalid. */)
1266 (address
, omit_port
)
1267 Lisp_Object address
, omit_port
;
1272 if (STRINGP (address
)) /* AF_LOCAL */
1275 if (VECTORP (address
)) /* AF_INET or AF_INET6 */
1277 register struct Lisp_Vector
*p
= XVECTOR (address
);
1278 Lisp_Object args
[10];
1281 if (p
->size
== 4 || (p
->size
== 5 && !NILP (omit_port
)))
1283 args
[0] = build_string ("%d.%d.%d.%d");
1286 else if (p
->size
== 5)
1288 args
[0] = build_string ("%d.%d.%d.%d:%d");
1291 else if (p
->size
== 8 || (p
->size
== 9 && !NILP (omit_port
)))
1293 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
1296 else if (p
->size
== 9)
1298 args
[0] = build_string ("[%x:%x:%x:%x:%x:%x:%x:%x]:%d");
1304 for (i
= 0; i
< nargs
; i
++)
1306 EMACS_INT element
= XINT (p
->contents
[i
]);
1308 if (element
< 0 || element
> 65535)
1311 if (nargs
<= 5 /* IPv4 */
1312 && i
< 4 /* host, not port */
1316 args
[i
+1] = p
->contents
[i
];
1319 return Fformat (nargs
+1, args
);
1322 if (CONSP (address
))
1324 Lisp_Object args
[2];
1325 args
[0] = build_string ("<Family %d>");
1326 args
[1] = Fcar (address
);
1327 return Fformat (2, args
);
1335 list_processes_1 (query_only
)
1336 Lisp_Object query_only
;
1338 register Lisp_Object tail
, tem
;
1339 Lisp_Object proc
, minspace
, tem1
;
1340 register struct Lisp_Process
*p
;
1342 int w_proc
, w_buffer
, w_tty
;
1344 Lisp_Object i_status
, i_buffer
, i_tty
, i_command
;
1346 w_proc
= 4; /* Proc */
1347 w_buffer
= 6; /* Buffer */
1348 w_tty
= 0; /* Omit if no ttys */
1350 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1354 proc
= Fcdr (Fcar (tail
));
1355 p
= XPROCESS (proc
);
1356 if (NILP (p
->childp
))
1358 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1360 if (STRINGP (p
->name
)
1361 && ( i
= SCHARS (p
->name
), (i
> w_proc
)))
1363 if (!NILP (p
->buffer
))
1365 if (NILP (XBUFFER (p
->buffer
)->name
) && w_buffer
< 8)
1366 w_buffer
= 8; /* (Killed) */
1367 else if ((i
= SCHARS (XBUFFER (p
->buffer
)->name
), (i
> w_buffer
)))
1370 if (STRINGP (p
->tty_name
)
1371 && (i
= SCHARS (p
->tty_name
), (i
> w_tty
)))
1375 XSETFASTINT (i_status
, w_proc
+ 1);
1376 XSETFASTINT (i_buffer
, XFASTINT (i_status
) + 9);
1379 XSETFASTINT (i_tty
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1380 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_tty
+ 1);
1383 XSETFASTINT (i_command
, XFASTINT (i_buffer
) + w_buffer
+ 1);
1386 XSETFASTINT (minspace
, 1);
1388 set_buffer_internal (XBUFFER (Vstandard_output
));
1389 current_buffer
->undo_list
= Qt
;
1391 current_buffer
->truncate_lines
= Qt
;
1393 write_string ("Proc", -1);
1394 Findent_to (i_status
, minspace
); write_string ("Status", -1);
1395 Findent_to (i_buffer
, minspace
); write_string ("Buffer", -1);
1398 Findent_to (i_tty
, minspace
); write_string ("Tty", -1);
1400 Findent_to (i_command
, minspace
); write_string ("Command", -1);
1401 write_string ("\n", -1);
1403 write_string ("----", -1);
1404 Findent_to (i_status
, minspace
); write_string ("------", -1);
1405 Findent_to (i_buffer
, minspace
); write_string ("------", -1);
1408 Findent_to (i_tty
, minspace
); write_string ("---", -1);
1410 Findent_to (i_command
, minspace
); write_string ("-------", -1);
1411 write_string ("\n", -1);
1413 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
1417 proc
= Fcdr (Fcar (tail
));
1418 p
= XPROCESS (proc
);
1419 if (NILP (p
->childp
))
1421 if (!NILP (query_only
) && !NILP (p
->kill_without_query
))
1424 Finsert (1, &p
->name
);
1425 Findent_to (i_status
, minspace
);
1427 if (p
->raw_status_new
)
1430 if (CONSP (p
->status
))
1431 symbol
= XCAR (p
->status
);
1433 if (EQ (symbol
, Qsignal
))
1436 tem
= Fcar (Fcdr (p
->status
));
1438 if (XINT (tem
) < NSIG
)
1439 write_string (sys_errlist
[XINT (tem
)], -1);
1442 Fprinc (symbol
, Qnil
);
1444 else if (NETCONN1_P (p
))
1446 if (EQ (symbol
, Qexit
))
1447 write_string ("closed", -1);
1448 else if (EQ (p
->command
, Qt
))
1449 write_string ("stopped", -1);
1450 else if (EQ (symbol
, Qrun
))
1451 write_string ("open", -1);
1453 Fprinc (symbol
, Qnil
);
1456 Fprinc (symbol
, Qnil
);
1458 if (EQ (symbol
, Qexit
))
1461 tem
= Fcar (Fcdr (p
->status
));
1464 sprintf (tembuf
, " %d", (int) XFASTINT (tem
));
1465 write_string (tembuf
, -1);
1469 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
) || EQ (symbol
, Qclosed
))
1472 Findent_to (i_buffer
, minspace
);
1473 if (NILP (p
->buffer
))
1474 insert_string ("(none)");
1475 else if (NILP (XBUFFER (p
->buffer
)->name
))
1476 insert_string ("(Killed)");
1478 Finsert (1, &XBUFFER (p
->buffer
)->name
);
1482 Findent_to (i_tty
, minspace
);
1483 if (STRINGP (p
->tty_name
))
1484 Finsert (1, &p
->tty_name
);
1487 Findent_to (i_command
, minspace
);
1489 if (EQ (p
->status
, Qlisten
))
1491 Lisp_Object port
= Fplist_get (p
->childp
, QCservice
);
1492 if (INTEGERP (port
))
1493 port
= Fnumber_to_string (port
);
1495 port
= Fformat_network_address (Fplist_get (p
->childp
, QClocal
), Qnil
);
1496 sprintf (tembuf
, "(network %s server on %s)\n",
1497 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1498 (STRINGP (port
) ? (char *)SDATA (port
) : "?"));
1499 insert_string (tembuf
);
1501 else if (NETCONN1_P (p
))
1503 /* For a local socket, there is no host name,
1504 so display service instead. */
1505 Lisp_Object host
= Fplist_get (p
->childp
, QChost
);
1506 if (!STRINGP (host
))
1508 host
= Fplist_get (p
->childp
, QCservice
);
1509 if (INTEGERP (host
))
1510 host
= Fnumber_to_string (host
);
1513 host
= Fformat_network_address (Fplist_get (p
->childp
, QCremote
), Qnil
);
1514 sprintf (tembuf
, "(network %s connection to %s)\n",
1515 (DATAGRAM_CHAN_P (XINT (p
->infd
)) ? "datagram" : "stream"),
1516 (STRINGP (host
) ? (char *)SDATA (host
) : "?"));
1517 insert_string (tembuf
);
1529 insert_string (" ");
1531 insert_string ("\n");
1535 status_notify (NULL
);
1539 DEFUN ("list-processes", Flist_processes
, Slist_processes
, 0, 1, "P",
1540 doc
: /* Display a list of all processes.
1541 If optional argument QUERY-ONLY is non-nil, only processes with
1542 the query-on-exit flag set will be listed.
1543 Any process listed as exited or signaled is actually eliminated
1544 after the listing is made. */)
1546 Lisp_Object query_only
;
1548 internal_with_output_to_temp_buffer ("*Process List*",
1549 list_processes_1
, query_only
);
1553 DEFUN ("process-list", Fprocess_list
, Sprocess_list
, 0, 0, 0,
1554 doc
: /* Return a list of all processes. */)
1557 return Fmapcar (Qcdr
, Vprocess_alist
);
1560 /* Starting asynchronous inferior processes. */
1562 static Lisp_Object
start_process_unwind ();
1564 DEFUN ("start-process", Fstart_process
, Sstart_process
, 3, MANY
, 0,
1565 doc
: /* Start a program in a subprocess. Return the process object for it.
1566 NAME is name for process. It is modified if necessary to make it unique.
1567 BUFFER is the buffer (or buffer name) to associate with the process.
1569 Process output (both standard output and standard error streams) goes
1570 at end of BUFFER, unless you specify an output stream or filter
1571 function to handle the output. BUFFER may also be nil, meaning that
1572 this process is not associated with any buffer.
1574 PROGRAM is the program file name. It is searched for in PATH.
1575 Remaining arguments are strings to give program as arguments.
1577 If you want to separate standard output from standard error, invoke
1578 the command through a shell and redirect one of them using the shell
1581 usage: (start-process NAME BUFFER PROGRAM &rest PROGRAM-ARGS) */)
1584 register Lisp_Object
*args
;
1586 Lisp_Object buffer
, name
, program
, proc
, current_dir
, tem
;
1588 register unsigned char *new_argv
;
1591 register unsigned char **new_argv
;
1594 int count
= SPECPDL_INDEX ();
1598 buffer
= Fget_buffer_create (buffer
);
1600 /* Make sure that the child will be able to chdir to the current
1601 buffer's current directory, or its unhandled equivalent. We
1602 can't just have the child check for an error when it does the
1603 chdir, since it's in a vfork.
1605 We have to GCPRO around this because Fexpand_file_name and
1606 Funhandled_file_name_directory might call a file name handling
1607 function. The argument list is protected by the caller, so all
1608 we really have to worry about is buffer. */
1610 struct gcpro gcpro1
, gcpro2
;
1612 current_dir
= current_buffer
->directory
;
1614 GCPRO2 (buffer
, current_dir
);
1617 = expand_and_dir_to_file (Funhandled_file_name_directory (current_dir
),
1619 if (NILP (Ffile_accessible_directory_p (current_dir
)))
1620 report_file_error ("Setting current directory",
1621 Fcons (current_buffer
->directory
, Qnil
));
1627 CHECK_STRING (name
);
1631 CHECK_STRING (program
);
1633 proc
= make_process (name
);
1634 /* If an error occurs and we can't start the process, we want to
1635 remove it from the process list. This means that each error
1636 check in create_process doesn't need to call remove_process
1637 itself; it's all taken care of here. */
1638 record_unwind_protect (start_process_unwind
, proc
);
1640 XPROCESS (proc
)->childp
= Qt
;
1641 XPROCESS (proc
)->plist
= Qnil
;
1642 XPROCESS (proc
)->buffer
= buffer
;
1643 XPROCESS (proc
)->sentinel
= Qnil
;
1644 XPROCESS (proc
)->filter
= Qnil
;
1645 XPROCESS (proc
)->filter_multibyte
1646 = buffer_defaults
.enable_multibyte_characters
;
1647 XPROCESS (proc
)->command
= Flist (nargs
- 2, args
+ 2);
1649 #ifdef ADAPTIVE_READ_BUFFERING
1650 XPROCESS (proc
)->adaptive_read_buffering
= Vprocess_adaptive_read_buffering
;
1653 /* Make the process marker point into the process buffer (if any). */
1654 if (BUFFERP (buffer
))
1655 set_marker_both (XPROCESS (proc
)->mark
, buffer
,
1656 BUF_ZV (XBUFFER (buffer
)),
1657 BUF_ZV_BYTE (XBUFFER (buffer
)));
1660 /* Decide coding systems for communicating with the process. Here
1661 we don't setup the structure coding_system nor pay attention to
1662 unibyte mode. They are done in create_process. */
1664 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
1665 Lisp_Object coding_systems
= Qt
;
1666 Lisp_Object val
, *args2
;
1667 struct gcpro gcpro1
, gcpro2
;
1669 val
= Vcoding_system_for_read
;
1672 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof *args2
);
1673 args2
[0] = Qstart_process
;
1674 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1675 GCPRO2 (proc
, current_dir
);
1676 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1678 if (CONSP (coding_systems
))
1679 val
= XCAR (coding_systems
);
1680 else if (CONSP (Vdefault_process_coding_system
))
1681 val
= XCAR (Vdefault_process_coding_system
);
1683 XPROCESS (proc
)->decode_coding_system
= val
;
1685 val
= Vcoding_system_for_write
;
1688 if (EQ (coding_systems
, Qt
))
1690 args2
= (Lisp_Object
*) alloca ((nargs
+ 1) * sizeof args2
);
1691 args2
[0] = Qstart_process
;
1692 for (i
= 0; i
< nargs
; i
++) args2
[i
+ 1] = args
[i
];
1693 GCPRO2 (proc
, current_dir
);
1694 coding_systems
= Ffind_operation_coding_system (nargs
+ 1, args2
);
1697 if (CONSP (coding_systems
))
1698 val
= XCDR (coding_systems
);
1699 else if (CONSP (Vdefault_process_coding_system
))
1700 val
= XCDR (Vdefault_process_coding_system
);
1702 XPROCESS (proc
)->encode_coding_system
= val
;
1706 /* Make a one member argv with all args concatenated
1707 together separated by a blank. */
1708 len
= SBYTES (program
) + 2;
1709 for (i
= 3; i
< nargs
; i
++)
1713 len
+= SBYTES (tem
) + 1; /* count the blank */
1715 new_argv
= (unsigned char *) alloca (len
);
1716 strcpy (new_argv
, SDATA (program
));
1717 for (i
= 3; i
< nargs
; i
++)
1721 strcat (new_argv
, " ");
1722 strcat (new_argv
, SDATA (tem
));
1724 /* Need to add code here to check for program existence on VMS */
1727 new_argv
= (unsigned char **) alloca ((nargs
- 1) * sizeof (char *));
1729 /* If program file name is not absolute, search our path for it.
1730 Put the name we will really use in TEM. */
1731 if (!IS_DIRECTORY_SEP (SREF (program
, 0))
1732 && !(SCHARS (program
) > 1
1733 && IS_DEVICE_SEP (SREF (program
, 1))))
1735 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
1738 GCPRO4 (name
, program
, buffer
, current_dir
);
1739 openp (Vexec_path
, program
, Vexec_suffixes
, &tem
, make_number (X_OK
));
1742 report_file_error ("Searching for program", Fcons (program
, Qnil
));
1743 tem
= Fexpand_file_name (tem
, Qnil
);
1747 if (!NILP (Ffile_directory_p (program
)))
1748 error ("Specified program for new process is a directory");
1752 /* If program file name starts with /: for quoting a magic name,
1754 if (SBYTES (tem
) > 2 && SREF (tem
, 0) == '/'
1755 && SREF (tem
, 1) == ':')
1756 tem
= Fsubstring (tem
, make_number (2), Qnil
);
1758 /* Encode the file name and put it in NEW_ARGV.
1759 That's where the child will use it to execute the program. */
1760 tem
= ENCODE_FILE (tem
);
1761 new_argv
[0] = SDATA (tem
);
1763 /* Here we encode arguments by the coding system used for sending
1764 data to the process. We don't support using different coding
1765 systems for encoding arguments and for encoding data sent to the
1768 for (i
= 3; i
< nargs
; i
++)
1772 if (STRING_MULTIBYTE (tem
))
1773 tem
= (code_convert_string_norecord
1774 (tem
, XPROCESS (proc
)->encode_coding_system
, 1));
1775 new_argv
[i
- 2] = SDATA (tem
);
1777 new_argv
[i
- 2] = 0;
1778 #endif /* not VMS */
1780 XPROCESS (proc
)->decoding_buf
= make_uninit_string (0);
1781 XPROCESS (proc
)->decoding_carryover
= make_number (0);
1782 XPROCESS (proc
)->encoding_buf
= make_uninit_string (0);
1783 XPROCESS (proc
)->encoding_carryover
= make_number (0);
1785 XPROCESS (proc
)->inherit_coding_system_flag
1786 = (NILP (buffer
) || !inherit_process_coding_system
1789 create_process (proc
, (char **) new_argv
, current_dir
);
1791 return unbind_to (count
, proc
);
1794 /* This function is the unwind_protect form for Fstart_process. If
1795 PROC doesn't have its pid set, then we know someone has signaled
1796 an error and the process wasn't started successfully, so we should
1797 remove it from the process list. */
1799 start_process_unwind (proc
)
1802 if (!PROCESSP (proc
))
1805 /* Was PROC started successfully? */
1806 if (XPROCESS (proc
)->pid
<= 0)
1807 remove_process (proc
);
1813 create_process_1 (timer
)
1814 struct atimer
*timer
;
1816 /* Nothing to do. */
1820 #if 0 /* This doesn't work; see the note before sigchld_handler. */
1823 /* Mimic blocking of signals on system V, which doesn't really have it. */
1825 /* Nonzero means we got a SIGCHLD when it was supposed to be blocked. */
1826 int sigchld_deferred
;
1829 create_process_sigchld ()
1831 signal (SIGCHLD
, create_process_sigchld
);
1833 sigchld_deferred
= 1;
1839 #ifndef VMS /* VMS version of this function is in vmsproc.c. */
1841 create_process (process
, new_argv
, current_dir
)
1842 Lisp_Object process
;
1844 Lisp_Object current_dir
;
1846 int inchannel
, outchannel
;
1849 #ifdef POSIX_SIGNALS
1852 struct sigaction sigint_action
;
1853 struct sigaction sigquit_action
;
1855 struct sigaction sighup_action
;
1857 #else /* !POSIX_SIGNALS */
1860 SIGTYPE (*sigchld
)();
1863 #endif /* !POSIX_SIGNALS */
1864 /* Use volatile to protect variables from being clobbered by longjmp. */
1865 volatile int forkin
, forkout
;
1866 volatile int pty_flag
= 0;
1868 extern char **environ
;
1871 inchannel
= outchannel
= -1;
1874 if (!NILP (Vprocess_connection_type
))
1875 outchannel
= inchannel
= allocate_pty ();
1879 #if ! defined (USG) || defined (USG_SUBTTY_WORKS)
1880 /* On most USG systems it does not work to open the pty's tty here,
1881 then close it and reopen it in the child. */
1883 /* Don't let this terminal become our controlling terminal
1884 (in case we don't have one). */
1885 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
| O_NOCTTY
, 0);
1887 forkout
= forkin
= emacs_open (pty_name
, O_RDWR
, 0);
1890 report_file_error ("Opening pty", Qnil
);
1891 #if defined (RTU) || defined (UNIPLUS) || defined (DONT_REOPEN_PTY)
1892 /* In the case that vfork is defined as fork, the parent process
1893 (Emacs) may send some data before the child process completes
1894 tty options setup. So we setup tty before forking. */
1895 child_setup_tty (forkout
);
1896 #endif /* RTU or UNIPLUS or DONT_REOPEN_PTY */
1898 forkin
= forkout
= -1;
1899 #endif /* not USG, or USG_SUBTTY_WORKS */
1903 #endif /* HAVE_PTYS */
1906 if (socketpair (AF_UNIX
, SOCK_STREAM
, 0, sv
) < 0)
1907 report_file_error ("Opening socketpair", Qnil
);
1908 outchannel
= inchannel
= sv
[0];
1909 forkout
= forkin
= sv
[1];
1911 #else /* not SKTPAIR */
1916 report_file_error ("Creating pipe", Qnil
);
1922 emacs_close (inchannel
);
1923 emacs_close (forkout
);
1924 report_file_error ("Creating pipe", Qnil
);
1929 #endif /* not SKTPAIR */
1932 /* Replaced by close_process_descs */
1933 set_exclusive_use (inchannel
);
1934 set_exclusive_use (outchannel
);
1937 /* Stride people say it's a mystery why this is needed
1938 as well as the O_NDELAY, but that it fails without this. */
1939 #if defined (STRIDE) || (defined (pfa) && defined (HAVE_PTYS))
1942 ioctl (inchannel
, FIONBIO
, &one
);
1947 fcntl (inchannel
, F_SETFL
, O_NONBLOCK
);
1948 fcntl (outchannel
, F_SETFL
, O_NONBLOCK
);
1951 fcntl (inchannel
, F_SETFL
, O_NDELAY
);
1952 fcntl (outchannel
, F_SETFL
, O_NDELAY
);
1956 /* Record this as an active process, with its channels.
1957 As a result, child_setup will close Emacs's side of the pipes. */
1958 chan_process
[inchannel
] = process
;
1959 XSETINT (XPROCESS (process
)->infd
, inchannel
);
1960 XSETINT (XPROCESS (process
)->outfd
, outchannel
);
1962 /* Previously we recorded the tty descriptor used in the subprocess.
1963 It was only used for getting the foreground tty process, so now
1964 we just reopen the device (see emacs_get_tty_pgrp) as this is
1965 more portable (see USG_SUBTTY_WORKS above). */
1967 XPROCESS (process
)->pty_flag
= (pty_flag
? Qt
: Qnil
);
1968 XPROCESS (process
)->status
= Qrun
;
1969 setup_process_coding_systems (process
);
1971 /* Delay interrupts until we have a chance to store
1972 the new fork's pid in its process structure */
1973 #ifdef POSIX_SIGNALS
1974 sigemptyset (&blocked
);
1976 sigaddset (&blocked
, SIGCHLD
);
1978 #ifdef HAVE_WORKING_VFORK
1979 /* On many hosts (e.g. Solaris 2.4), if a vforked child calls `signal',
1980 this sets the parent's signal handlers as well as the child's.
1981 So delay all interrupts whose handlers the child might munge,
1982 and record the current handlers so they can be restored later. */
1983 sigaddset (&blocked
, SIGINT
); sigaction (SIGINT
, 0, &sigint_action
);
1984 sigaddset (&blocked
, SIGQUIT
); sigaction (SIGQUIT
, 0, &sigquit_action
);
1986 sigaddset (&blocked
, SIGHUP
); sigaction (SIGHUP
, 0, &sighup_action
);
1988 #endif /* HAVE_WORKING_VFORK */
1989 sigprocmask (SIG_BLOCK
, &blocked
, &procmask
);
1990 #else /* !POSIX_SIGNALS */
1994 #else /* not BSD4_1 */
1995 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
1996 sigsetmask (sigmask (SIGCHLD
));
1997 #else /* ordinary USG */
1999 sigchld_deferred
= 0;
2000 sigchld
= signal (SIGCHLD
, create_process_sigchld
);
2002 #endif /* ordinary USG */
2003 #endif /* not BSD4_1 */
2004 #endif /* SIGCHLD */
2005 #endif /* !POSIX_SIGNALS */
2007 FD_SET (inchannel
, &input_wait_mask
);
2008 FD_SET (inchannel
, &non_keyboard_wait_mask
);
2009 if (inchannel
> max_process_desc
)
2010 max_process_desc
= inchannel
;
2012 /* Until we store the proper pid, enable sigchld_handler
2013 to recognize an unknown pid as standing for this process.
2014 It is very important not to let this `marker' value stay
2015 in the table after this function has returned; if it does
2016 it might cause call-process to hang and subsequent asynchronous
2017 processes to get their return values scrambled. */
2018 XPROCESS (process
)->pid
= -1;
2023 /* child_setup must clobber environ on systems with true vfork.
2024 Protect it from permanent change. */
2025 char **save_environ
= environ
;
2027 current_dir
= ENCODE_FILE (current_dir
);
2032 #endif /* not WINDOWSNT */
2034 int xforkin
= forkin
;
2035 int xforkout
= forkout
;
2037 #if 0 /* This was probably a mistake--it duplicates code later on,
2038 but fails to handle all the cases. */
2039 /* Make sure SIGCHLD is not blocked in the child. */
2040 sigsetmask (SIGEMPTYMASK
);
2043 /* Make the pty be the controlling terminal of the process. */
2045 /* First, disconnect its current controlling terminal. */
2047 /* We tried doing setsid only if pty_flag, but it caused
2048 process_set_signal to fail on SGI when using a pipe. */
2050 /* Make the pty's terminal the controlling terminal. */
2054 /* We ignore the return value
2055 because faith@cs.unc.edu says that is necessary on Linux. */
2056 ioctl (xforkin
, TIOCSCTTY
, 0);
2059 #else /* not HAVE_SETSID */
2061 /* It's very important to call setpgrp here and no time
2062 afterwards. Otherwise, we lose our controlling tty which
2063 is set when we open the pty. */
2066 #endif /* not HAVE_SETSID */
2067 #if defined (HAVE_TERMIOS) && defined (LDISC1)
2068 if (pty_flag
&& xforkin
>= 0)
2071 tcgetattr (xforkin
, &t
);
2073 if (tcsetattr (xforkin
, TCSANOW
, &t
) < 0)
2074 emacs_write (1, "create_process/tcsetattr LDISC1 failed\n", 39);
2077 #if defined (NTTYDISC) && defined (TIOCSETD)
2078 if (pty_flag
&& xforkin
>= 0)
2080 /* Use new line discipline. */
2081 int ldisc
= NTTYDISC
;
2082 ioctl (xforkin
, TIOCSETD
, &ldisc
);
2087 /* In 4.3BSD, the TIOCSPGRP bug has been fixed, and now you
2088 can do TIOCSPGRP only to the process's controlling tty. */
2091 /* I wonder: would just ioctl (0, TIOCNOTTY, 0) work here?
2092 I can't test it since I don't have 4.3. */
2093 int j
= emacs_open ("/dev/tty", O_RDWR
, 0);
2094 ioctl (j
, TIOCNOTTY
, 0);
2097 /* In order to get a controlling terminal on some versions
2098 of BSD, it is necessary to put the process in pgrp 0
2099 before it opens the terminal. */
2107 #endif /* TIOCNOTTY */
2109 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2110 /*** There is a suggestion that this ought to be a
2111 conditional on TIOCSPGRP,
2112 or !(defined (HAVE_SETSID) && defined (TIOCSCTTY)).
2113 Trying the latter gave the wrong results on Debian GNU/Linux 1.1;
2114 that system does seem to need this code, even though
2115 both HAVE_SETSID and TIOCSCTTY are defined. */
2116 /* Now close the pty (if we had it open) and reopen it.
2117 This makes the pty the controlling terminal of the subprocess. */
2120 #ifdef SET_CHILD_PTY_PGRP
2121 int pgrp
= getpid ();
2124 /* I wonder if emacs_close (emacs_open (pty_name, ...))
2127 emacs_close (xforkin
);
2128 xforkout
= xforkin
= emacs_open (pty_name
, O_RDWR
, 0);
2132 emacs_write (1, "Couldn't open the pty terminal ", 31);
2133 emacs_write (1, pty_name
, strlen (pty_name
));
2134 emacs_write (1, "\n", 1);
2138 #ifdef SET_CHILD_PTY_PGRP
2139 ioctl (xforkin
, TIOCSPGRP
, &pgrp
);
2140 ioctl (xforkout
, TIOCSPGRP
, &pgrp
);
2143 #endif /* not UNIPLUS and not RTU and not DONT_REOPEN_PTY */
2145 #ifdef SETUP_SLAVE_PTY
2150 #endif /* SETUP_SLAVE_PTY */
2152 /* On AIX, we've disabled SIGHUP above once we start a child on a pty.
2153 Now reenable it in the child, so it will die when we want it to. */
2155 signal (SIGHUP
, SIG_DFL
);
2157 #endif /* HAVE_PTYS */
2159 signal (SIGINT
, SIG_DFL
);
2160 signal (SIGQUIT
, SIG_DFL
);
2162 /* Stop blocking signals in the child. */
2163 #ifdef POSIX_SIGNALS
2164 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2165 #else /* !POSIX_SIGNALS */
2169 #else /* not BSD4_1 */
2170 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2171 sigsetmask (SIGEMPTYMASK
);
2172 #else /* ordinary USG */
2174 signal (SIGCHLD
, sigchld
);
2176 #endif /* ordinary USG */
2177 #endif /* not BSD4_1 */
2178 #endif /* SIGCHLD */
2179 #endif /* !POSIX_SIGNALS */
2181 #if !defined (RTU) && !defined (UNIPLUS) && !defined (DONT_REOPEN_PTY)
2183 child_setup_tty (xforkout
);
2184 #endif /* not RTU and not UNIPLUS and not DONT_REOPEN_PTY */
2186 pid
= child_setup (xforkin
, xforkout
, xforkout
,
2187 new_argv
, 1, current_dir
);
2188 #else /* not WINDOWSNT */
2189 child_setup (xforkin
, xforkout
, xforkout
,
2190 new_argv
, 1, current_dir
);
2191 #endif /* not WINDOWSNT */
2193 environ
= save_environ
;
2198 /* This runs in the Emacs process. */
2202 emacs_close (forkin
);
2203 if (forkin
!= forkout
&& forkout
>= 0)
2204 emacs_close (forkout
);
2208 /* vfork succeeded. */
2209 XPROCESS (process
)->pid
= pid
;
2212 register_child (pid
, inchannel
);
2213 #endif /* WINDOWSNT */
2215 /* If the subfork execv fails, and it exits,
2216 this close hangs. I don't know why.
2217 So have an interrupt jar it loose. */
2219 struct atimer
*timer
;
2223 EMACS_SET_SECS_USECS (offset
, 1, 0);
2224 timer
= start_atimer (ATIMER_RELATIVE
, offset
, create_process_1
, 0);
2227 emacs_close (forkin
);
2229 cancel_atimer (timer
);
2233 if (forkin
!= forkout
&& forkout
>= 0)
2234 emacs_close (forkout
);
2238 XPROCESS (process
)->tty_name
= build_string (pty_name
);
2241 XPROCESS (process
)->tty_name
= Qnil
;
2244 /* Restore the signal state whether vfork succeeded or not.
2245 (We will signal an error, below, if it failed.) */
2246 #ifdef POSIX_SIGNALS
2247 #ifdef HAVE_WORKING_VFORK
2248 /* Restore the parent's signal handlers. */
2249 sigaction (SIGINT
, &sigint_action
, 0);
2250 sigaction (SIGQUIT
, &sigquit_action
, 0);
2252 sigaction (SIGHUP
, &sighup_action
, 0);
2254 #endif /* HAVE_WORKING_VFORK */
2255 /* Stop blocking signals in the parent. */
2256 sigprocmask (SIG_SETMASK
, &procmask
, 0);
2257 #else /* !POSIX_SIGNALS */
2261 #else /* not BSD4_1 */
2262 #if defined (BSD_SYSTEM) || defined (UNIPLUS) || defined (HPUX)
2263 sigsetmask (SIGEMPTYMASK
);
2264 #else /* ordinary USG */
2266 signal (SIGCHLD
, sigchld
);
2267 /* Now really handle any of these signals
2268 that came in during this function. */
2269 if (sigchld_deferred
)
2270 kill (getpid (), SIGCHLD
);
2272 #endif /* ordinary USG */
2273 #endif /* not BSD4_1 */
2274 #endif /* SIGCHLD */
2275 #endif /* !POSIX_SIGNALS */
2277 /* Now generate the error if vfork failed. */
2279 report_file_error ("Doing vfork", Qnil
);
2281 #endif /* not VMS */
2286 /* Convert an internal struct sockaddr to a lisp object (vector or string).
2287 The address family of sa is not included in the result. */
2290 conv_sockaddr_to_lisp (sa
, len
)
2291 struct sockaddr
*sa
;
2294 Lisp_Object address
;
2297 register struct Lisp_Vector
*p
;
2299 switch (sa
->sa_family
)
2303 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2304 len
= sizeof (sin
->sin_addr
) + 1;
2305 address
= Fmake_vector (make_number (len
), Qnil
);
2306 p
= XVECTOR (address
);
2307 p
->contents
[--len
] = make_number (ntohs (sin
->sin_port
));
2308 cp
= (unsigned char *)&sin
->sin_addr
;
2314 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2315 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2316 len
= sizeof (sin6
->sin6_addr
)/2 + 1;
2317 address
= Fmake_vector (make_number (len
), Qnil
);
2318 p
= XVECTOR (address
);
2319 p
->contents
[--len
] = make_number (ntohs (sin6
->sin6_port
));
2320 for (i
= 0; i
< len
; i
++)
2321 p
->contents
[i
] = make_number (ntohs (ip6
[i
]));
2325 #ifdef HAVE_LOCAL_SOCKETS
2328 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2329 for (i
= 0; i
< sizeof (sockun
->sun_path
); i
++)
2330 if (sockun
->sun_path
[i
] == 0)
2332 return make_unibyte_string (sockun
->sun_path
, i
);
2336 len
-= sizeof (sa
->sa_family
);
2337 address
= Fcons (make_number (sa
->sa_family
),
2338 Fmake_vector (make_number (len
), Qnil
));
2339 p
= XVECTOR (XCDR (address
));
2340 cp
= (unsigned char *) sa
+ sizeof (sa
->sa_family
);
2346 p
->contents
[i
++] = make_number (*cp
++);
2352 /* Get family and required size for sockaddr structure to hold ADDRESS. */
2355 get_lisp_to_sockaddr_size (address
, familyp
)
2356 Lisp_Object address
;
2359 register struct Lisp_Vector
*p
;
2361 if (VECTORP (address
))
2363 p
= XVECTOR (address
);
2367 return sizeof (struct sockaddr_in
);
2370 else if (p
->size
== 9)
2372 *familyp
= AF_INET6
;
2373 return sizeof (struct sockaddr_in6
);
2377 #ifdef HAVE_LOCAL_SOCKETS
2378 else if (STRINGP (address
))
2380 *familyp
= AF_LOCAL
;
2381 return sizeof (struct sockaddr_un
);
2384 else if (CONSP (address
) && INTEGERP (XCAR (address
)) && VECTORP (XCDR (address
)))
2386 struct sockaddr
*sa
;
2387 *familyp
= XINT (XCAR (address
));
2388 p
= XVECTOR (XCDR (address
));
2389 return p
->size
+ sizeof (sa
->sa_family
);
2394 /* Convert an address object (vector or string) to an internal sockaddr.
2396 The address format has been basically validated by
2397 get_lisp_to_sockaddr_size, but this does not mean FAMILY is valid;
2398 it could have come from user data. So if FAMILY is not valid,
2399 we return after zeroing *SA. */
2402 conv_lisp_to_sockaddr (family
, address
, sa
, len
)
2404 Lisp_Object address
;
2405 struct sockaddr
*sa
;
2408 register struct Lisp_Vector
*p
;
2409 register unsigned char *cp
= NULL
;
2414 if (VECTORP (address
))
2416 p
= XVECTOR (address
);
2417 if (family
== AF_INET
)
2419 struct sockaddr_in
*sin
= (struct sockaddr_in
*) sa
;
2420 len
= sizeof (sin
->sin_addr
) + 1;
2421 i
= XINT (p
->contents
[--len
]);
2422 sin
->sin_port
= htons (i
);
2423 cp
= (unsigned char *)&sin
->sin_addr
;
2424 sa
->sa_family
= family
;
2427 else if (family
== AF_INET6
)
2429 struct sockaddr_in6
*sin6
= (struct sockaddr_in6
*) sa
;
2430 uint16_t *ip6
= (uint16_t *)&sin6
->sin6_addr
;
2431 len
= sizeof (sin6
->sin6_addr
) + 1;
2432 i
= XINT (p
->contents
[--len
]);
2433 sin6
->sin6_port
= htons (i
);
2434 for (i
= 0; i
< len
; i
++)
2435 if (INTEGERP (p
->contents
[i
]))
2437 int j
= XFASTINT (p
->contents
[i
]) & 0xffff;
2440 sa
->sa_family
= family
;
2445 else if (STRINGP (address
))
2447 #ifdef HAVE_LOCAL_SOCKETS
2448 if (family
== AF_LOCAL
)
2450 struct sockaddr_un
*sockun
= (struct sockaddr_un
*) sa
;
2451 cp
= SDATA (address
);
2452 for (i
= 0; i
< sizeof (sockun
->sun_path
) && *cp
; i
++)
2453 sockun
->sun_path
[i
] = *cp
++;
2454 sa
->sa_family
= family
;
2461 p
= XVECTOR (XCDR (address
));
2462 cp
= (unsigned char *)sa
+ sizeof (sa
->sa_family
);
2465 for (i
= 0; i
< len
; i
++)
2466 if (INTEGERP (p
->contents
[i
]))
2467 *cp
++ = XFASTINT (p
->contents
[i
]) & 0xff;
2470 #ifdef DATAGRAM_SOCKETS
2471 DEFUN ("process-datagram-address", Fprocess_datagram_address
, Sprocess_datagram_address
,
2473 doc
: /* Get the current datagram address associated with PROCESS. */)
2475 Lisp_Object process
;
2479 CHECK_PROCESS (process
);
2481 if (!DATAGRAM_CONN_P (process
))
2484 channel
= XINT (XPROCESS (process
)->infd
);
2485 return conv_sockaddr_to_lisp (datagram_address
[channel
].sa
,
2486 datagram_address
[channel
].len
);
2489 DEFUN ("set-process-datagram-address", Fset_process_datagram_address
, Sset_process_datagram_address
,
2491 doc
: /* Set the datagram address for PROCESS to ADDRESS.
2492 Returns nil upon error setting address, ADDRESS otherwise. */)
2494 Lisp_Object process
, address
;
2499 CHECK_PROCESS (process
);
2501 if (!DATAGRAM_CONN_P (process
))
2504 channel
= XINT (XPROCESS (process
)->infd
);
2506 len
= get_lisp_to_sockaddr_size (address
, &family
);
2507 if (datagram_address
[channel
].len
!= len
)
2509 conv_lisp_to_sockaddr (family
, address
, datagram_address
[channel
].sa
, len
);
2515 static struct socket_options
{
2516 /* The name of this option. Should be lowercase version of option
2517 name without SO_ prefix. */
2519 /* Option level SOL_... */
2521 /* Option number SO_... */
2523 enum { SOPT_UNKNOWN
, SOPT_BOOL
, SOPT_INT
, SOPT_IFNAME
, SOPT_LINGER
} opttype
;
2524 enum { OPIX_NONE
=0, OPIX_MISC
=1, OPIX_REUSEADDR
=2 } optbit
;
2525 } socket_options
[] =
2527 #ifdef SO_BINDTODEVICE
2528 { ":bindtodevice", SOL_SOCKET
, SO_BINDTODEVICE
, SOPT_IFNAME
, OPIX_MISC
},
2531 { ":broadcast", SOL_SOCKET
, SO_BROADCAST
, SOPT_BOOL
, OPIX_MISC
},
2534 { ":dontroute", SOL_SOCKET
, SO_DONTROUTE
, SOPT_BOOL
, OPIX_MISC
},
2537 { ":keepalive", SOL_SOCKET
, SO_KEEPALIVE
, SOPT_BOOL
, OPIX_MISC
},
2540 { ":linger", SOL_SOCKET
, SO_LINGER
, SOPT_LINGER
, OPIX_MISC
},
2543 { ":oobinline", SOL_SOCKET
, SO_OOBINLINE
, SOPT_BOOL
, OPIX_MISC
},
2546 { ":priority", SOL_SOCKET
, SO_PRIORITY
, SOPT_INT
, OPIX_MISC
},
2549 { ":reuseaddr", SOL_SOCKET
, SO_REUSEADDR
, SOPT_BOOL
, OPIX_REUSEADDR
},
2551 { 0, 0, 0, SOPT_UNKNOWN
, OPIX_NONE
}
2554 /* Set option OPT to value VAL on socket S.
2556 Returns (1<<socket_options[OPT].optbit) if option is known, 0 otherwise.
2557 Signals an error if setting a known option fails.
2561 set_socket_option (s
, opt
, val
)
2563 Lisp_Object opt
, val
;
2566 struct socket_options
*sopt
;
2571 name
= (char *) SDATA (SYMBOL_NAME (opt
));
2572 for (sopt
= socket_options
; sopt
->name
; sopt
++)
2573 if (strcmp (name
, sopt
->name
) == 0)
2576 switch (sopt
->opttype
)
2581 optval
= NILP (val
) ? 0 : 1;
2582 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2583 &optval
, sizeof (optval
));
2591 optval
= XINT (val
);
2593 error ("Bad option value for %s", name
);
2594 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2595 &optval
, sizeof (optval
));
2599 #ifdef SO_BINDTODEVICE
2602 char devname
[IFNAMSIZ
+1];
2604 /* This is broken, at least in the Linux 2.4 kernel.
2605 To unbind, the arg must be a zero integer, not the empty string.
2606 This should work on all systems. KFS. 2003-09-23. */
2607 bzero (devname
, sizeof devname
);
2610 char *arg
= (char *) SDATA (val
);
2611 int len
= min (strlen (arg
), IFNAMSIZ
);
2612 bcopy (arg
, devname
, len
);
2614 else if (!NILP (val
))
2615 error ("Bad option value for %s", name
);
2616 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2625 struct linger linger
;
2628 linger
.l_linger
= 0;
2630 linger
.l_linger
= XINT (val
);
2632 linger
.l_onoff
= NILP (val
) ? 0 : 1;
2633 ret
= setsockopt (s
, sopt
->optlevel
, sopt
->optnum
,
2634 &linger
, sizeof (linger
));
2644 report_file_error ("Cannot set network option",
2645 Fcons (opt
, Fcons (val
, Qnil
)));
2646 return (1 << sopt
->optbit
);
2650 DEFUN ("set-network-process-option",
2651 Fset_network_process_option
, Sset_network_process_option
,
2653 doc
: /* For network process PROCESS set option OPTION to value VALUE.
2654 See `make-network-process' for a list of options and values.
2655 If optional fourth arg NO-ERROR is non-nil, don't signal an error if
2656 OPTION is not a supported option, return nil instead; otherwise return t. */)
2657 (process
, option
, value
, no_error
)
2658 Lisp_Object process
, option
, value
;
2659 Lisp_Object no_error
;
2662 struct Lisp_Process
*p
;
2664 CHECK_PROCESS (process
);
2665 p
= XPROCESS (process
);
2666 if (!NETCONN1_P (p
))
2667 error ("Process is not a network process");
2671 error ("Process is not running");
2673 if (set_socket_option (s
, option
, value
))
2675 p
->childp
= Fplist_put (p
->childp
, option
, value
);
2679 if (NILP (no_error
))
2680 error ("Unknown or unsupported option");
2686 /* A version of request_sigio suitable for a record_unwind_protect. */
2689 unwind_request_sigio (dummy
)
2692 if (interrupt_input
)
2697 /* Create a network stream/datagram client/server process. Treated
2698 exactly like a normal process when reading and writing. Primary
2699 differences are in status display and process deletion. A network
2700 connection has no PID; you cannot signal it. All you can do is
2701 stop/continue it and deactivate/close it via delete-process */
2703 DEFUN ("make-network-process", Fmake_network_process
, Smake_network_process
,
2705 doc
: /* Create and return a network server or client process.
2707 In Emacs, network connections are represented by process objects, so
2708 input and output work as for subprocesses and `delete-process' closes
2709 a network connection. However, a network process has no process id,
2710 it cannot be signaled, and the status codes are different from normal
2713 Arguments are specified as keyword/argument pairs. The following
2714 arguments are defined:
2716 :name NAME -- NAME is name for process. It is modified if necessary
2719 :buffer BUFFER -- BUFFER is the buffer (or buffer-name) to associate
2720 with the process. Process output goes at end of that buffer, unless
2721 you specify an output stream or filter function to handle the output.
2722 BUFFER may be also nil, meaning that this process is not associated
2725 :host HOST -- HOST is name of the host to connect to, or its IP
2726 address. The symbol `local' specifies the local host. If specified
2727 for a server process, it must be a valid name or address for the local
2728 host, and only clients connecting to that address will be accepted.
2730 :service SERVICE -- SERVICE is name of the service desired, or an
2731 integer specifying a port number to connect to. If SERVICE is t,
2732 a random port number is selected for the server.
2734 :type TYPE -- TYPE is the type of connection. The default (nil) is a
2735 stream type connection, `datagram' creates a datagram type connection.
2737 :family FAMILY -- FAMILY is the address (and protocol) family for the
2738 service specified by HOST and SERVICE. The default (nil) is to use
2739 whatever address family (IPv4 or IPv6) that is defined for the host
2740 and port number specified by HOST and SERVICE. Other address families
2742 local -- for a local (i.e. UNIX) address specified by SERVICE.
2743 ipv4 -- use IPv4 address family only.
2744 ipv6 -- use IPv6 address family only.
2746 :local ADDRESS -- ADDRESS is the local address used for the connection.
2747 This parameter is ignored when opening a client process. When specified
2748 for a server process, the FAMILY, HOST and SERVICE args are ignored.
2750 :remote ADDRESS -- ADDRESS is the remote partner's address for the
2751 connection. This parameter is ignored when opening a stream server
2752 process. For a datagram server process, it specifies the initial
2753 setting of the remote datagram address. When specified for a client
2754 process, the FAMILY, HOST, and SERVICE args are ignored.
2756 The format of ADDRESS depends on the address family:
2757 - An IPv4 address is represented as an vector of integers [A B C D P]
2758 corresponding to numeric IP address A.B.C.D and port number P.
2759 - A local address is represented as a string with the address in the
2760 local address space.
2761 - An "unsupported family" address is represented by a cons (F . AV)
2762 where F is the family number and AV is a vector containing the socket
2763 address data with one element per address data byte. Do not rely on
2764 this format in portable code, as it may depend on implementation
2765 defined constants, data sizes, and data structure alignment.
2767 :coding CODING -- If CODING is a symbol, it specifies the coding
2768 system used for both reading and writing for this process. If CODING
2769 is a cons (DECODING . ENCODING), DECODING is used for reading, and
2770 ENCODING is used for writing.
2772 :nowait BOOL -- If BOOL is non-nil for a stream type client process,
2773 return without waiting for the connection to complete; instead, the
2774 sentinel function will be called with second arg matching "open" (if
2775 successful) or "failed" when the connect completes. Default is to use
2776 a blocking connect (i.e. wait) for stream type connections.
2778 :noquery BOOL -- Query the user unless BOOL is non-nil, and process is
2779 running when Emacs is exited.
2781 :stop BOOL -- Start process in the `stopped' state if BOOL non-nil.
2782 In the stopped state, a server process does not accept new
2783 connections, and a client process does not handle incoming traffic.
2784 The stopped state is cleared by `continue-process' and set by
2787 :filter FILTER -- Install FILTER as the process filter.
2789 :filter-multibyte BOOL -- If BOOL is non-nil, strings given to the
2790 process filter are multibyte, otherwise they are unibyte.
2791 If this keyword is not specified, the strings are multibyte iff
2792 `default-enable-multibyte-characters' is non-nil.
2794 :sentinel SENTINEL -- Install SENTINEL as the process sentinel.
2796 :log LOG -- Install LOG as the server process log function. This
2797 function is called when the server accepts a network connection from a
2798 client. The arguments are SERVER, CLIENT, and MESSAGE, where SERVER
2799 is the server process, CLIENT is the new process for the connection,
2800 and MESSAGE is a string.
2802 :plist PLIST -- Install PLIST as the new process' initial plist.
2804 :server QLEN -- if QLEN is non-nil, create a server process for the
2805 specified FAMILY, SERVICE, and connection type (stream or datagram).
2806 If QLEN is an integer, it is used as the max. length of the server's
2807 pending connection queue (also known as the backlog); the default
2808 queue length is 5. Default is to create a client process.
2810 The following network options can be specified for this connection:
2812 :broadcast BOOL -- Allow send and receive of datagram broadcasts.
2813 :dontroute BOOL -- Only send to directly connected hosts.
2814 :keepalive BOOL -- Send keep-alive messages on network stream.
2815 :linger BOOL or TIMEOUT -- Send queued messages before closing.
2816 :oobinline BOOL -- Place out-of-band data in receive data stream.
2817 :priority INT -- Set protocol defined priority for sent packets.
2818 :reuseaddr BOOL -- Allow reusing a recently used local address
2819 (this is allowed by default for a server process).
2820 :bindtodevice NAME -- bind to interface NAME. Using this may require
2821 special privileges on some systems.
2823 Consult the relevant system programmer's manual pages for more
2824 information on using these options.
2827 A server process will listen for and accept connections from clients.
2828 When a client connection is accepted, a new network process is created
2829 for the connection with the following parameters:
2831 - The client's process name is constructed by concatenating the server
2832 process' NAME and a client identification string.
2833 - If the FILTER argument is non-nil, the client process will not get a
2834 separate process buffer; otherwise, the client's process buffer is a newly
2835 created buffer named after the server process' BUFFER name or process
2836 NAME concatenated with the client identification string.
2837 - The connection type and the process filter and sentinel parameters are
2838 inherited from the server process' TYPE, FILTER and SENTINEL.
2839 - The client process' contact info is set according to the client's
2840 addressing information (typically an IP address and a port number).
2841 - The client process' plist is initialized from the server's plist.
2843 Notice that the FILTER and SENTINEL args are never used directly by
2844 the server process. Also, the BUFFER argument is not used directly by
2845 the server process, but via the optional :log function, accepted (and
2846 failed) connections may be logged in the server process' buffer.
2848 The original argument list, modified with the actual connection
2849 information, is available via the `process-contact' function.
2851 usage: (make-network-process &rest ARGS) */)
2857 Lisp_Object contact
;
2858 struct Lisp_Process
*p
;
2859 #ifdef HAVE_GETADDRINFO
2860 struct addrinfo ai
, *res
, *lres
;
2861 struct addrinfo hints
;
2862 char *portstring
, portbuf
[128];
2863 #else /* HAVE_GETADDRINFO */
2864 struct _emacs_addrinfo
2870 struct sockaddr
*ai_addr
;
2871 struct _emacs_addrinfo
*ai_next
;
2873 #endif /* HAVE_GETADDRINFO */
2874 struct sockaddr_in address_in
;
2875 #ifdef HAVE_LOCAL_SOCKETS
2876 struct sockaddr_un address_un
;
2881 int s
= -1, outch
, inch
;
2882 struct gcpro gcpro1
;
2883 int count
= SPECPDL_INDEX ();
2885 Lisp_Object QCaddress
; /* one of QClocal or QCremote */
2887 Lisp_Object name
, buffer
, host
, service
, address
;
2888 Lisp_Object filter
, sentinel
;
2889 int is_non_blocking_client
= 0;
2890 int is_server
= 0, backlog
= 5;
2897 /* Save arguments for process-contact and clone-process. */
2898 contact
= Flist (nargs
, args
);
2902 /* Ensure socket support is loaded if available. */
2903 init_winsock (TRUE
);
2906 /* :type TYPE (nil: stream, datagram */
2907 tem
= Fplist_get (contact
, QCtype
);
2909 socktype
= SOCK_STREAM
;
2910 #ifdef DATAGRAM_SOCKETS
2911 else if (EQ (tem
, Qdatagram
))
2912 socktype
= SOCK_DGRAM
;
2915 error ("Unsupported connection type");
2918 tem
= Fplist_get (contact
, QCserver
);
2921 /* Don't support network sockets when non-blocking mode is
2922 not available, since a blocked Emacs is not useful. */
2923 #if defined(TERM) || (!defined(O_NONBLOCK) && !defined(O_NDELAY))
2924 error ("Network servers not supported");
2928 backlog
= XINT (tem
);
2932 /* Make QCaddress an alias for :local (server) or :remote (client). */
2933 QCaddress
= is_server
? QClocal
: QCremote
;
2936 if (!is_server
&& socktype
== SOCK_STREAM
2937 && (tem
= Fplist_get (contact
, QCnowait
), !NILP (tem
)))
2939 #ifndef NON_BLOCKING_CONNECT
2940 error ("Non-blocking connect not supported");
2942 is_non_blocking_client
= 1;
2946 name
= Fplist_get (contact
, QCname
);
2947 buffer
= Fplist_get (contact
, QCbuffer
);
2948 filter
= Fplist_get (contact
, QCfilter
);
2949 sentinel
= Fplist_get (contact
, QCsentinel
);
2951 CHECK_STRING (name
);
2954 /* Let's handle TERM before things get complicated ... */
2955 host
= Fplist_get (contact
, QChost
);
2956 CHECK_STRING (host
);
2958 service
= Fplist_get (contact
, QCservice
);
2959 if (INTEGERP (service
))
2960 port
= htons ((unsigned short) XINT (service
));
2963 struct servent
*svc_info
;
2964 CHECK_STRING (service
);
2965 svc_info
= getservbyname (SDATA (service
), "tcp");
2967 error ("Unknown service: %s", SDATA (service
));
2968 port
= svc_info
->s_port
;
2971 s
= connect_server (0);
2973 report_file_error ("error creating socket", Fcons (name
, Qnil
));
2974 send_command (s
, C_PORT
, 0, "%s:%d", SDATA (host
), ntohs (port
));
2975 send_command (s
, C_DUMB
, 1, 0);
2977 #else /* not TERM */
2979 /* Initialize addrinfo structure in case we don't use getaddrinfo. */
2980 ai
.ai_socktype
= socktype
;
2985 /* :local ADDRESS or :remote ADDRESS */
2986 address
= Fplist_get (contact
, QCaddress
);
2987 if (!NILP (address
))
2989 host
= service
= Qnil
;
2991 if (!(ai
.ai_addrlen
= get_lisp_to_sockaddr_size (address
, &family
)))
2992 error ("Malformed :address");
2993 ai
.ai_family
= family
;
2994 ai
.ai_addr
= alloca (ai
.ai_addrlen
);
2995 conv_lisp_to_sockaddr (family
, address
, ai
.ai_addr
, ai
.ai_addrlen
);
2999 /* :family FAMILY -- nil (for Inet), local, or integer. */
3000 tem
= Fplist_get (contact
, QCfamily
);
3003 #if defined(HAVE_GETADDRINFO) && defined(AF_INET6)
3009 #ifdef HAVE_LOCAL_SOCKETS
3010 else if (EQ (tem
, Qlocal
))
3014 else if (EQ (tem
, Qipv6
))
3017 else if (EQ (tem
, Qipv4
))
3019 else if (INTEGERP (tem
))
3020 family
= XINT (tem
);
3022 error ("Unknown address family");
3024 ai
.ai_family
= family
;
3026 /* :service SERVICE -- string, integer (port number), or t (random port). */
3027 service
= Fplist_get (contact
, QCservice
);
3029 #ifdef HAVE_LOCAL_SOCKETS
3030 if (family
== AF_LOCAL
)
3032 /* Host is not used. */
3034 CHECK_STRING (service
);
3035 bzero (&address_un
, sizeof address_un
);
3036 address_un
.sun_family
= AF_LOCAL
;
3037 strncpy (address_un
.sun_path
, SDATA (service
), sizeof address_un
.sun_path
);
3038 ai
.ai_addr
= (struct sockaddr
*) &address_un
;
3039 ai
.ai_addrlen
= sizeof address_un
;
3044 /* :host HOST -- hostname, ip address, or 'local for localhost. */
3045 host
= Fplist_get (contact
, QChost
);
3048 if (EQ (host
, Qlocal
))
3049 host
= build_string ("localhost");
3050 CHECK_STRING (host
);
3053 /* Slow down polling to every ten seconds.
3054 Some kernels have a bug which causes retrying connect to fail
3055 after a connect. Polling can interfere with gethostbyname too. */
3056 #ifdef POLL_FOR_INPUT
3057 if (socktype
== SOCK_STREAM
)
3059 record_unwind_protect (unwind_stop_other_atimers
, Qnil
);
3060 bind_polling_period (10);
3064 #ifdef HAVE_GETADDRINFO
3065 /* If we have a host, use getaddrinfo to resolve both host and service.
3066 Otherwise, use getservbyname to lookup the service. */
3070 /* SERVICE can either be a string or int.
3071 Convert to a C string for later use by getaddrinfo. */
3072 if (EQ (service
, Qt
))
3074 else if (INTEGERP (service
))
3076 sprintf (portbuf
, "%ld", (long) XINT (service
));
3077 portstring
= portbuf
;
3081 CHECK_STRING (service
);
3082 portstring
= SDATA (service
);
3087 memset (&hints
, 0, sizeof (hints
));
3089 hints
.ai_family
= family
;
3090 hints
.ai_socktype
= socktype
;
3091 hints
.ai_protocol
= 0;
3092 ret
= getaddrinfo (SDATA (host
), portstring
, &hints
, &res
);
3094 #ifdef HAVE_GAI_STRERROR
3095 error ("%s/%s %s", SDATA (host
), portstring
, gai_strerror(ret
));
3097 error ("%s/%s getaddrinfo error %d", SDATA (host
), portstring
, ret
);
3103 #endif /* HAVE_GETADDRINFO */
3105 /* We end up here if getaddrinfo is not defined, or in case no hostname
3106 has been specified (e.g. for a local server process). */
3108 if (EQ (service
, Qt
))
3110 else if (INTEGERP (service
))
3111 port
= htons ((unsigned short) XINT (service
));
3114 struct servent
*svc_info
;
3115 CHECK_STRING (service
);
3116 svc_info
= getservbyname (SDATA (service
),
3117 (socktype
== SOCK_DGRAM
? "udp" : "tcp"));
3119 error ("Unknown service: %s", SDATA (service
));
3120 port
= svc_info
->s_port
;
3123 bzero (&address_in
, sizeof address_in
);
3124 address_in
.sin_family
= family
;
3125 address_in
.sin_addr
.s_addr
= INADDR_ANY
;
3126 address_in
.sin_port
= port
;
3128 #ifndef HAVE_GETADDRINFO
3131 struct hostent
*host_info_ptr
;
3133 /* gethostbyname may fail with TRY_AGAIN, but we don't honour that,
3134 as it may `hang' Emacs for a very long time. */
3137 host_info_ptr
= gethostbyname (SDATA (host
));
3142 bcopy (host_info_ptr
->h_addr
, (char *) &address_in
.sin_addr
,
3143 host_info_ptr
->h_length
);
3144 family
= host_info_ptr
->h_addrtype
;
3145 address_in
.sin_family
= family
;
3148 /* Attempt to interpret host as numeric inet address */
3150 IN_ADDR numeric_addr
;
3151 numeric_addr
= inet_addr ((char *) SDATA (host
));
3152 if (NUMERIC_ADDR_ERROR
)
3153 error ("Unknown host \"%s\"", SDATA (host
));
3155 bcopy ((char *)&numeric_addr
, (char *) &address_in
.sin_addr
,
3156 sizeof (address_in
.sin_addr
));
3160 #endif /* not HAVE_GETADDRINFO */
3162 ai
.ai_family
= family
;
3163 ai
.ai_addr
= (struct sockaddr
*) &address_in
;
3164 ai
.ai_addrlen
= sizeof address_in
;
3169 /* Previously this was compiled unconditionally, but that seems
3170 unnecessary on modern systems, and `unrequest_sigio' was a noop
3171 under X anyway. --lorentey */
3172 /* Kernel bugs (on Ultrix at least) cause lossage (not just EINTR)
3173 when connect is interrupted. So let's not let it get interrupted.
3174 Note we do not turn off polling, because polling is only used
3175 when not interrupt_input, and thus not normally used on the systems
3176 which have this bug. On systems which use polling, there's no way
3177 to quit if polling is turned off. */
3179 && !is_server
&& socktype
== SOCK_STREAM
)
3181 /* Comment from KFS: The original open-network-stream code
3182 didn't unwind protect this, but it seems like the proper
3183 thing to do. In any case, I don't see how it could harm to
3184 do this -- and it makes cleanup (using unbind_to) easier. */
3185 record_unwind_protect (unwind_request_sigio
, Qnil
);
3190 /* Do this in case we never enter the for-loop below. */
3191 count1
= SPECPDL_INDEX ();
3194 for (lres
= res
; lres
; lres
= lres
->ai_next
)
3200 s
= socket (lres
->ai_family
, lres
->ai_socktype
, lres
->ai_protocol
);
3207 #ifdef DATAGRAM_SOCKETS
3208 if (!is_server
&& socktype
== SOCK_DGRAM
)
3210 #endif /* DATAGRAM_SOCKETS */
3212 #ifdef NON_BLOCKING_CONNECT
3213 if (is_non_blocking_client
)
3216 ret
= fcntl (s
, F_SETFL
, O_NONBLOCK
);
3218 ret
= fcntl (s
, F_SETFL
, O_NDELAY
);
3230 /* Make us close S if quit. */
3231 record_unwind_protect (close_file_unwind
, make_number (s
));
3233 /* Parse network options in the arg list.
3234 We simply ignore anything which isn't a known option (including other keywords).
3235 An error is signalled if setting a known option fails. */
3236 for (optn
= optbits
= 0; optn
< nargs
-1; optn
+= 2)
3237 optbits
|= set_socket_option (s
, args
[optn
], args
[optn
+1]);
3241 /* Configure as a server socket. */
3243 /* SO_REUSEADDR = 1 is default for server sockets; must specify
3244 explicit :reuseaddr key to override this. */
3245 #ifdef HAVE_LOCAL_SOCKETS
3246 if (family
!= AF_LOCAL
)
3248 if (!(optbits
& (1 << OPIX_REUSEADDR
)))
3251 if (setsockopt (s
, SOL_SOCKET
, SO_REUSEADDR
, &optval
, sizeof optval
))
3252 report_file_error ("Cannot set reuse option on server socket", Qnil
);
3255 if (bind (s
, lres
->ai_addr
, lres
->ai_addrlen
))
3256 report_file_error ("Cannot bind server socket", Qnil
);
3258 #ifdef HAVE_GETSOCKNAME
3259 if (EQ (service
, Qt
))
3261 struct sockaddr_in sa1
;
3262 int len1
= sizeof (sa1
);
3263 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3265 ((struct sockaddr_in
*)(lres
->ai_addr
))->sin_port
= sa1
.sin_port
;
3266 service
= make_number (ntohs (sa1
.sin_port
));
3267 contact
= Fplist_put (contact
, QCservice
, service
);
3272 if (socktype
== SOCK_STREAM
&& listen (s
, backlog
))
3273 report_file_error ("Cannot listen on server socket", Qnil
);
3281 /* This turns off all alarm-based interrupts; the
3282 bind_polling_period call above doesn't always turn all the
3283 short-interval ones off, especially if interrupt_input is
3286 It'd be nice to be able to control the connect timeout
3287 though. Would non-blocking connect calls be portable?
3289 This used to be conditioned by HAVE_GETADDRINFO. Why? */
3291 turn_on_atimers (0);
3293 ret
= connect (s
, lres
->ai_addr
, lres
->ai_addrlen
);
3296 turn_on_atimers (1);
3298 if (ret
== 0 || xerrno
== EISCONN
)
3300 /* The unwind-protect will be discarded afterwards.
3301 Likewise for immediate_quit. */
3305 #ifdef NON_BLOCKING_CONNECT
3307 if (is_non_blocking_client
&& xerrno
== EINPROGRESS
)
3311 if (is_non_blocking_client
&& xerrno
== EWOULDBLOCK
)
3319 /* Discard the unwind protect closing S. */
3320 specpdl_ptr
= specpdl
+ count1
;
3324 if (xerrno
== EINTR
)
3330 #ifdef DATAGRAM_SOCKETS
3331 if (socktype
== SOCK_DGRAM
)
3333 if (datagram_address
[s
].sa
)
3335 datagram_address
[s
].sa
= (struct sockaddr
*) xmalloc (lres
->ai_addrlen
);
3336 datagram_address
[s
].len
= lres
->ai_addrlen
;
3340 bzero (datagram_address
[s
].sa
, lres
->ai_addrlen
);
3341 if (remote
= Fplist_get (contact
, QCremote
), !NILP (remote
))
3344 rlen
= get_lisp_to_sockaddr_size (remote
, &rfamily
);
3345 if (rfamily
== lres
->ai_family
&& rlen
== lres
->ai_addrlen
)
3346 conv_lisp_to_sockaddr (rfamily
, remote
,
3347 datagram_address
[s
].sa
, rlen
);
3351 bcopy (lres
->ai_addr
, datagram_address
[s
].sa
, lres
->ai_addrlen
);
3354 contact
= Fplist_put (contact
, QCaddress
,
3355 conv_sockaddr_to_lisp (lres
->ai_addr
, lres
->ai_addrlen
));
3356 #ifdef HAVE_GETSOCKNAME
3359 struct sockaddr_in sa1
;
3360 int len1
= sizeof (sa1
);
3361 if (getsockname (s
, (struct sockaddr
*)&sa1
, &len1
) == 0)
3362 contact
= Fplist_put (contact
, QClocal
,
3363 conv_sockaddr_to_lisp (&sa1
, len1
));
3370 #ifdef HAVE_GETADDRINFO
3379 /* Discard the unwind protect for closing S, if any. */
3380 specpdl_ptr
= specpdl
+ count1
;
3382 /* Unwind bind_polling_period and request_sigio. */
3383 unbind_to (count
, Qnil
);
3387 /* If non-blocking got this far - and failed - assume non-blocking is
3388 not supported after all. This is probably a wrong assumption, but
3389 the normal blocking calls to open-network-stream handles this error
3391 if (is_non_blocking_client
)
3396 report_file_error ("make server process failed", contact
);
3398 report_file_error ("make client process failed", contact
);
3401 #endif /* not TERM */
3407 buffer
= Fget_buffer_create (buffer
);
3408 proc
= make_process (name
);
3410 chan_process
[inch
] = proc
;
3413 fcntl (inch
, F_SETFL
, O_NONBLOCK
);
3416 fcntl (inch
, F_SETFL
, O_NDELAY
);
3420 p
= XPROCESS (proc
);
3422 p
->childp
= contact
;
3423 p
->plist
= Fcopy_sequence (Fplist_get (contact
, QCplist
));
3426 p
->sentinel
= sentinel
;
3428 p
->filter_multibyte
= buffer_defaults
.enable_multibyte_characters
;
3429 /* Override the above only if :filter-multibyte is specified. */
3430 if (! NILP (Fplist_member (contact
, QCfilter_multibyte
)))
3431 p
->filter_multibyte
= Fplist_get (contact
, QCfilter_multibyte
);
3432 p
->log
= Fplist_get (contact
, QClog
);
3433 if (tem
= Fplist_get (contact
, QCnoquery
), !NILP (tem
))
3434 p
->kill_without_query
= Qt
;
3435 if ((tem
= Fplist_get (contact
, QCstop
), !NILP (tem
)))
3438 XSETINT (p
->infd
, inch
);
3439 XSETINT (p
->outfd
, outch
);
3440 if (is_server
&& socktype
== SOCK_STREAM
)
3441 p
->status
= Qlisten
;
3443 /* Make the process marker point into the process buffer (if any). */
3444 if (BUFFERP (buffer
))
3445 set_marker_both (p
->mark
, buffer
,
3446 BUF_ZV (XBUFFER (buffer
)),
3447 BUF_ZV_BYTE (XBUFFER (buffer
)));
3449 #ifdef NON_BLOCKING_CONNECT
3450 if (is_non_blocking_client
)
3452 /* We may get here if connect did succeed immediately. However,
3453 in that case, we still need to signal this like a non-blocking
3455 p
->status
= Qconnect
;
3456 if (!FD_ISSET (inch
, &connect_wait_mask
))
3458 FD_SET (inch
, &connect_wait_mask
);
3459 num_pending_connects
++;
3464 /* A server may have a client filter setting of Qt, but it must
3465 still listen for incoming connects unless it is stopped. */
3466 if ((!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
3467 || (EQ (p
->status
, Qlisten
) && NILP (p
->command
)))
3469 FD_SET (inch
, &input_wait_mask
);
3470 FD_SET (inch
, &non_keyboard_wait_mask
);
3473 if (inch
> max_process_desc
)
3474 max_process_desc
= inch
;
3476 tem
= Fplist_member (contact
, QCcoding
);
3477 if (!NILP (tem
) && (!CONSP (tem
) || !CONSP (XCDR (tem
))))
3478 tem
= Qnil
; /* No error message (too late!). */
3481 /* Setup coding systems for communicating with the network stream. */
3482 struct gcpro gcpro1
;
3483 /* Qt denotes we have not yet called Ffind_operation_coding_system. */
3484 Lisp_Object coding_systems
= Qt
;
3485 Lisp_Object args
[5], val
;
3489 val
= XCAR (XCDR (tem
));
3493 else if (!NILP (Vcoding_system_for_read
))
3494 val
= Vcoding_system_for_read
;
3495 else if ((!NILP (buffer
) && NILP (XBUFFER (buffer
)->enable_multibyte_characters
))
3496 || (NILP (buffer
) && NILP (buffer_defaults
.enable_multibyte_characters
)))
3497 /* We dare not decode end-of-line format by setting VAL to
3498 Qraw_text, because the existing Emacs Lisp libraries
3499 assume that they receive bare code including a sequene of
3504 if (NILP (host
) || NILP (service
))
3505 coding_systems
= Qnil
;
3508 args
[0] = Qopen_network_stream
, args
[1] = name
,
3509 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3511 coding_systems
= Ffind_operation_coding_system (5, args
);
3514 if (CONSP (coding_systems
))
3515 val
= XCAR (coding_systems
);
3516 else if (CONSP (Vdefault_process_coding_system
))
3517 val
= XCAR (Vdefault_process_coding_system
);
3521 p
->decode_coding_system
= val
;
3525 val
= XCAR (XCDR (tem
));
3529 else if (!NILP (Vcoding_system_for_write
))
3530 val
= Vcoding_system_for_write
;
3531 else if (NILP (current_buffer
->enable_multibyte_characters
))
3535 if (EQ (coding_systems
, Qt
))
3537 if (NILP (host
) || NILP (service
))
3538 coding_systems
= Qnil
;
3541 args
[0] = Qopen_network_stream
, args
[1] = name
,
3542 args
[2] = buffer
, args
[3] = host
, args
[4] = service
;
3544 coding_systems
= Ffind_operation_coding_system (5, args
);
3548 if (CONSP (coding_systems
))
3549 val
= XCDR (coding_systems
);
3550 else if (CONSP (Vdefault_process_coding_system
))
3551 val
= XCDR (Vdefault_process_coding_system
);
3555 p
->encode_coding_system
= val
;
3557 setup_process_coding_systems (proc
);
3559 p
->decoding_buf
= make_uninit_string (0);
3560 p
->decoding_carryover
= make_number (0);
3561 p
->encoding_buf
= make_uninit_string (0);
3562 p
->encoding_carryover
= make_number (0);
3564 p
->inherit_coding_system_flag
3565 = (!NILP (tem
) || NILP (buffer
) || !inherit_process_coding_system
3571 #endif /* HAVE_SOCKETS */
3574 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
3577 DEFUN ("network-interface-list", Fnetwork_interface_list
, Snetwork_interface_list
, 0, 0, 0,
3578 doc
: /* Return an alist of all network interfaces and their network address.
3579 Each element is a cons, the car of which is a string containing the
3580 interface name, and the cdr is the network address in internal
3581 format; see the description of ADDRESS in `make-network-process'. */)
3584 struct ifconf ifconf
;
3585 struct ifreq
*ifreqs
= NULL
;
3590 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3596 buf_size
= ifaces
* sizeof(ifreqs
[0]);
3597 ifreqs
= (struct ifreq
*)xrealloc(ifreqs
, buf_size
);
3604 ifconf
.ifc_len
= buf_size
;
3605 ifconf
.ifc_req
= ifreqs
;
3606 if (ioctl (s
, SIOCGIFCONF
, &ifconf
))
3612 if (ifconf
.ifc_len
== buf_size
)
3616 ifaces
= ifconf
.ifc_len
/ sizeof (ifreqs
[0]);
3619 while (--ifaces
>= 0)
3621 struct ifreq
*ifq
= &ifreqs
[ifaces
];
3622 char namebuf
[sizeof (ifq
->ifr_name
) + 1];
3623 if (ifq
->ifr_addr
.sa_family
!= AF_INET
)
3625 bcopy (ifq
->ifr_name
, namebuf
, sizeof (ifq
->ifr_name
));
3626 namebuf
[sizeof (ifq
->ifr_name
)] = 0;
3627 res
= Fcons (Fcons (build_string (namebuf
),
3628 conv_sockaddr_to_lisp (&ifq
->ifr_addr
,
3629 sizeof (struct sockaddr
))),
3635 #endif /* SIOCGIFCONF */
3637 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
3644 static struct ifflag_def ifflag_table
[] = {
3648 #ifdef IFF_BROADCAST
3649 { IFF_BROADCAST
, "broadcast" },
3652 { IFF_DEBUG
, "debug" },
3655 { IFF_LOOPBACK
, "loopback" },
3657 #ifdef IFF_POINTOPOINT
3658 { IFF_POINTOPOINT
, "pointopoint" },
3661 { IFF_RUNNING
, "running" },
3664 { IFF_NOARP
, "noarp" },
3667 { IFF_PROMISC
, "promisc" },
3669 #ifdef IFF_NOTRAILERS
3670 { IFF_NOTRAILERS
, "notrailers" },
3673 { IFF_ALLMULTI
, "allmulti" },
3676 { IFF_MASTER
, "master" },
3679 { IFF_SLAVE
, "slave" },
3681 #ifdef IFF_MULTICAST
3682 { IFF_MULTICAST
, "multicast" },
3685 { IFF_PORTSEL
, "portsel" },
3687 #ifdef IFF_AUTOMEDIA
3688 { IFF_AUTOMEDIA
, "automedia" },
3691 { IFF_DYNAMIC
, "dynamic" },
3694 { IFF_OACTIVE
, "oactive" }, /* OpenBSD: transmission in progress */
3697 { IFF_SIMPLEX
, "simplex" }, /* OpenBSD: can't hear own transmissions */
3700 { IFF_LINK0
, "link0" }, /* OpenBSD: per link layer defined bit */
3703 { IFF_LINK1
, "link1" }, /* OpenBSD: per link layer defined bit */
3706 { IFF_LINK2
, "link2" }, /* OpenBSD: per link layer defined bit */
3711 DEFUN ("network-interface-info", Fnetwork_interface_info
, Snetwork_interface_info
, 1, 1, 0,
3712 doc
: /* Return information about network interface named IFNAME.
3713 The return value is a list (ADDR BCAST NETMASK HWADDR FLAGS),
3714 where ADDR is the layer 3 address, BCAST is the layer 3 broadcast address,
3715 NETMASK is the layer 3 network mask, HWADDR is the layer 2 addres, and
3716 FLAGS is the current flags of the interface. */)
3721 Lisp_Object res
= Qnil
;
3726 CHECK_STRING (ifname
);
3728 bzero (rq
.ifr_name
, sizeof rq
.ifr_name
);
3729 strncpy (rq
.ifr_name
, SDATA (ifname
), sizeof (rq
.ifr_name
));
3731 s
= socket (AF_INET
, SOCK_STREAM
, 0);
3736 #if defined(SIOCGIFFLAGS) && defined(HAVE_STRUCT_IFREQ_IFR_FLAGS)
3737 if (ioctl (s
, SIOCGIFFLAGS
, &rq
) == 0)
3739 int flags
= rq
.ifr_flags
;
3740 struct ifflag_def
*fp
;
3744 for (fp
= ifflag_table
; flags
!= 0 && fp
->flag_sym
; fp
++)
3746 if (flags
& fp
->flag_bit
)
3748 elt
= Fcons (intern (fp
->flag_sym
), elt
);
3749 flags
-= fp
->flag_bit
;
3752 for (fnum
= 0; flags
&& fnum
< 32; fnum
++)
3754 if (flags
& (1 << fnum
))
3756 elt
= Fcons (make_number (fnum
), elt
);
3761 res
= Fcons (elt
, res
);
3764 #if defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
3765 if (ioctl (s
, SIOCGIFHWADDR
, &rq
) == 0)
3767 Lisp_Object hwaddr
= Fmake_vector (make_number (6), Qnil
);
3768 register struct Lisp_Vector
*p
= XVECTOR (hwaddr
);
3772 for (n
= 0; n
< 6; n
++)
3773 p
->contents
[n
] = make_number (((unsigned char *)&rq
.ifr_hwaddr
.sa_data
[0])[n
]);
3774 elt
= Fcons (make_number (rq
.ifr_hwaddr
.sa_family
), hwaddr
);
3777 res
= Fcons (elt
, res
);
3780 #if defined(SIOCGIFNETMASK) && (defined(HAVE_STRUCT_IFREQ_IFR_NETMASK) || defined(HAVE_STRUCT_IFREQ_IFR_ADDR))
3781 if (ioctl (s
, SIOCGIFNETMASK
, &rq
) == 0)
3784 #ifdef HAVE_STRUCT_IFREQ_IFR_NETMASK
3785 elt
= conv_sockaddr_to_lisp (&rq
.ifr_netmask
, sizeof (rq
.ifr_netmask
));
3787 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3791 res
= Fcons (elt
, res
);
3794 #if defined(SIOCGIFBRDADDR) && defined(HAVE_STRUCT_IFREQ_IFR_BROADADDR)
3795 if (ioctl (s
, SIOCGIFBRDADDR
, &rq
) == 0)
3798 elt
= conv_sockaddr_to_lisp (&rq
.ifr_broadaddr
, sizeof (rq
.ifr_broadaddr
));
3801 res
= Fcons (elt
, res
);
3804 #if defined(SIOCGIFADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ADDR)
3805 if (ioctl (s
, SIOCGIFADDR
, &rq
) == 0)
3808 elt
= conv_sockaddr_to_lisp (&rq
.ifr_addr
, sizeof (rq
.ifr_addr
));
3811 res
= Fcons (elt
, res
);
3815 return any
? res
: Qnil
;
3818 #endif /* HAVE_SOCKETS */
3820 /* Turn off input and output for process PROC. */
3823 deactivate_process (proc
)
3826 register int inchannel
, outchannel
;
3827 register struct Lisp_Process
*p
= XPROCESS (proc
);
3829 inchannel
= XINT (p
->infd
);
3830 outchannel
= XINT (p
->outfd
);
3832 #ifdef ADAPTIVE_READ_BUFFERING
3833 if (XINT (p
->read_output_delay
) > 0)
3835 if (--process_output_delay_count
< 0)
3836 process_output_delay_count
= 0;
3837 XSETINT (p
->read_output_delay
, 0);
3838 p
->read_output_skip
= Qnil
;
3844 /* Beware SIGCHLD hereabouts. */
3845 flush_pending_output (inchannel
);
3848 VMS_PROC_STUFF
*get_vms_process_pointer (), *vs
;
3849 sys$
dassgn (outchannel
);
3850 vs
= get_vms_process_pointer (p
->pid
);
3852 give_back_vms_process_stuff (vs
);
3855 emacs_close (inchannel
);
3856 if (outchannel
>= 0 && outchannel
!= inchannel
)
3857 emacs_close (outchannel
);
3860 XSETINT (p
->infd
, -1);
3861 XSETINT (p
->outfd
, -1);
3862 #ifdef DATAGRAM_SOCKETS
3863 if (DATAGRAM_CHAN_P (inchannel
))
3865 xfree (datagram_address
[inchannel
].sa
);
3866 datagram_address
[inchannel
].sa
= 0;
3867 datagram_address
[inchannel
].len
= 0;
3870 chan_process
[inchannel
] = Qnil
;
3871 FD_CLR (inchannel
, &input_wait_mask
);
3872 FD_CLR (inchannel
, &non_keyboard_wait_mask
);
3873 #ifdef NON_BLOCKING_CONNECT
3874 if (FD_ISSET (inchannel
, &connect_wait_mask
))
3876 FD_CLR (inchannel
, &connect_wait_mask
);
3877 if (--num_pending_connects
< 0)
3881 if (inchannel
== max_process_desc
)
3884 /* We just closed the highest-numbered process input descriptor,
3885 so recompute the highest-numbered one now. */
3886 max_process_desc
= 0;
3887 for (i
= 0; i
< MAXDESC
; i
++)
3888 if (!NILP (chan_process
[i
]))
3889 max_process_desc
= i
;
3894 /* Close all descriptors currently in use for communication
3895 with subprocess. This is used in a newly-forked subprocess
3896 to get rid of irrelevant descriptors. */
3899 close_process_descs ()
3903 for (i
= 0; i
< MAXDESC
; i
++)
3905 Lisp_Object process
;
3906 process
= chan_process
[i
];
3907 if (!NILP (process
))
3909 int in
= XINT (XPROCESS (process
)->infd
);
3910 int out
= XINT (XPROCESS (process
)->outfd
);
3913 if (out
>= 0 && in
!= out
)
3920 DEFUN ("accept-process-output", Faccept_process_output
, Saccept_process_output
,
3922 doc
: /* Allow any pending output from subprocesses to be read by Emacs.
3923 It is read into the process' buffers or given to their filter functions.
3924 Non-nil arg PROCESS means do not return until some output has been received
3927 Non-nil second arg SECONDS and third arg MILLISEC are number of
3928 seconds and milliseconds to wait; return after that much time whether
3929 or not there is input. If SECONDS is a floating point number,
3930 it specifies a fractional number of seconds to wait.
3932 If optional fourth arg JUST-THIS-ONE is non-nil, only accept output
3933 from PROCESS, suspending reading output from other processes.
3934 If JUST-THIS-ONE is an integer, don't run any timers either.
3935 Return non-nil iff we received any output before the timeout expired. */)
3936 (process
, seconds
, millisec
, just_this_one
)
3937 register Lisp_Object process
, seconds
, millisec
, just_this_one
;
3939 int secs
, usecs
= 0;
3941 if (! NILP (process
))
3942 CHECK_PROCESS (process
);
3944 just_this_one
= Qnil
;
3946 if (!NILP (seconds
))
3948 if (INTEGERP (seconds
))
3949 secs
= XINT (seconds
);
3950 else if (FLOATP (seconds
))
3952 double timeout
= XFLOAT_DATA (seconds
);
3953 secs
= (int) timeout
;
3954 usecs
= (int) ((timeout
- (double) secs
) * 1000000);
3957 wrong_type_argument (Qnumberp
, seconds
);
3959 if (INTEGERP (millisec
))
3962 usecs
+= XINT (millisec
) * 1000;
3963 carry
= usecs
/ 1000000;
3965 if ((usecs
-= carry
* 1000000) < 0)
3972 if (secs
< 0 || (secs
== 0 && usecs
== 0))
3973 secs
= -1, usecs
= 0;
3976 secs
= NILP (process
) ? -1 : 0;
3979 (wait_reading_process_output (secs
, usecs
, 0, 0,
3981 !NILP (process
) ? XPROCESS (process
) : NULL
,
3982 NILP (just_this_one
) ? 0 :
3983 !INTEGERP (just_this_one
) ? 1 : -1)
3987 /* Accept a connection for server process SERVER on CHANNEL. */
3989 static int connect_counter
= 0;
3992 server_accept_connection (server
, channel
)
3996 Lisp_Object proc
, caller
, name
, buffer
;
3997 Lisp_Object contact
, host
, service
;
3998 struct Lisp_Process
*ps
= XPROCESS (server
);
3999 struct Lisp_Process
*p
;
4003 struct sockaddr_in in
;
4005 struct sockaddr_in6 in6
;
4007 #ifdef HAVE_LOCAL_SOCKETS
4008 struct sockaddr_un un
;
4011 int len
= sizeof saddr
;
4013 s
= accept (channel
, &saddr
.sa
, &len
);
4022 if (code
== EWOULDBLOCK
)
4026 if (!NILP (ps
->log
))
4027 call3 (ps
->log
, server
, Qnil
,
4028 concat3 (build_string ("accept failed with code"),
4029 Fnumber_to_string (make_number (code
)),
4030 build_string ("\n")));
4036 /* Setup a new process to handle the connection. */
4038 /* Generate a unique identification of the caller, and build contact
4039 information for this process. */
4042 switch (saddr
.sa
.sa_family
)
4046 Lisp_Object args
[5];
4047 unsigned char *ip
= (unsigned char *)&saddr
.in
.sin_addr
.s_addr
;
4048 args
[0] = build_string ("%d.%d.%d.%d");
4049 args
[1] = make_number (*ip
++);
4050 args
[2] = make_number (*ip
++);
4051 args
[3] = make_number (*ip
++);
4052 args
[4] = make_number (*ip
++);
4053 host
= Fformat (5, args
);
4054 service
= make_number (ntohs (saddr
.in
.sin_port
));
4056 args
[0] = build_string (" <%s:%d>");
4059 caller
= Fformat (3, args
);
4066 Lisp_Object args
[9];
4067 uint16_t *ip6
= (uint16_t *)&saddr
.in6
.sin6_addr
;
4069 args
[0] = build_string ("%x:%x:%x:%x:%x:%x:%x:%x");
4070 for (i
= 0; i
< 8; i
++)
4071 args
[i
+1] = make_number (ntohs(ip6
[i
]));
4072 host
= Fformat (9, args
);
4073 service
= make_number (ntohs (saddr
.in
.sin_port
));
4075 args
[0] = build_string (" <[%s]:%d>");
4078 caller
= Fformat (3, args
);
4083 #ifdef HAVE_LOCAL_SOCKETS
4087 caller
= Fnumber_to_string (make_number (connect_counter
));
4088 caller
= concat3 (build_string (" <*"), caller
, build_string ("*>"));
4092 /* Create a new buffer name for this process if it doesn't have a
4093 filter. The new buffer name is based on the buffer name or
4094 process name of the server process concatenated with the caller
4097 if (!NILP (ps
->filter
) && !EQ (ps
->filter
, Qt
))
4101 buffer
= ps
->buffer
;
4103 buffer
= Fbuffer_name (buffer
);
4108 buffer
= concat2 (buffer
, caller
);
4109 buffer
= Fget_buffer_create (buffer
);
4113 /* Generate a unique name for the new server process. Combine the
4114 server process name with the caller identification. */
4116 name
= concat2 (ps
->name
, caller
);
4117 proc
= make_process (name
);
4119 chan_process
[s
] = proc
;
4122 fcntl (s
, F_SETFL
, O_NONBLOCK
);
4125 fcntl (s
, F_SETFL
, O_NDELAY
);
4129 p
= XPROCESS (proc
);
4131 /* Build new contact information for this setup. */
4132 contact
= Fcopy_sequence (ps
->childp
);
4133 contact
= Fplist_put (contact
, QCserver
, Qnil
);
4134 contact
= Fplist_put (contact
, QChost
, host
);
4135 if (!NILP (service
))
4136 contact
= Fplist_put (contact
, QCservice
, service
);
4137 contact
= Fplist_put (contact
, QCremote
,
4138 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4139 #ifdef HAVE_GETSOCKNAME
4141 if (getsockname (s
, &saddr
.sa
, &len
) == 0)
4142 contact
= Fplist_put (contact
, QClocal
,
4143 conv_sockaddr_to_lisp (&saddr
.sa
, len
));
4146 p
->childp
= contact
;
4147 p
->plist
= Fcopy_sequence (ps
->plist
);
4150 p
->sentinel
= ps
->sentinel
;
4151 p
->filter
= ps
->filter
;
4154 XSETINT (p
->infd
, s
);
4155 XSETINT (p
->outfd
, s
);
4158 /* Client processes for accepted connections are not stopped initially. */
4159 if (!EQ (p
->filter
, Qt
))
4161 FD_SET (s
, &input_wait_mask
);
4162 FD_SET (s
, &non_keyboard_wait_mask
);
4165 if (s
> max_process_desc
)
4166 max_process_desc
= s
;
4168 /* Setup coding system for new process based on server process.
4169 This seems to be the proper thing to do, as the coding system
4170 of the new process should reflect the settings at the time the
4171 server socket was opened; not the current settings. */
4173 p
->decode_coding_system
= ps
->decode_coding_system
;
4174 p
->encode_coding_system
= ps
->encode_coding_system
;
4175 setup_process_coding_systems (proc
);
4177 p
->decoding_buf
= make_uninit_string (0);
4178 p
->decoding_carryover
= make_number (0);
4179 p
->encoding_buf
= make_uninit_string (0);
4180 p
->encoding_carryover
= make_number (0);
4182 p
->inherit_coding_system_flag
4183 = (NILP (buffer
) ? Qnil
: ps
->inherit_coding_system_flag
);
4185 if (!NILP (ps
->log
))
4186 call3 (ps
->log
, server
, proc
,
4187 concat3 (build_string ("accept from "),
4188 (STRINGP (host
) ? host
: build_string ("-")),
4189 build_string ("\n")));
4191 if (!NILP (p
->sentinel
))
4192 exec_sentinel (proc
,
4193 concat3 (build_string ("open from "),
4194 (STRINGP (host
) ? host
: build_string ("-")),
4195 build_string ("\n")));
4198 /* This variable is different from waiting_for_input in keyboard.c.
4199 It is used to communicate to a lisp process-filter/sentinel (via the
4200 function Fwaiting_for_user_input_p below) whether Emacs was waiting
4201 for user-input when that process-filter was called.
4202 waiting_for_input cannot be used as that is by definition 0 when
4203 lisp code is being evalled.
4204 This is also used in record_asynch_buffer_change.
4205 For that purpose, this must be 0
4206 when not inside wait_reading_process_output. */
4207 static int waiting_for_user_input_p
;
4210 wait_reading_process_output_unwind (data
)
4213 waiting_for_user_input_p
= XINT (data
);
4217 /* This is here so breakpoints can be put on it. */
4219 wait_reading_process_output_1 ()
4223 /* Use a wrapper around select to work around a bug in gdb 5.3.
4224 Normally, the wrapper is optimzed away by inlining.
4226 If emacs is stopped inside select, the gdb backtrace doesn't
4227 show the function which called select, so it is practically
4228 impossible to step through wait_reading_process_output. */
4232 select_wrapper (n
, rfd
, wfd
, xfd
, tmo
)
4234 SELECT_TYPE
*rfd
, *wfd
, *xfd
;
4237 return select (n
, rfd
, wfd
, xfd
, tmo
);
4239 #define select select_wrapper
4242 /* Read and dispose of subprocess output while waiting for timeout to
4243 elapse and/or keyboard input to be available.
4246 timeout in seconds, or
4247 zero for no limit, or
4248 -1 means gobble data immediately available but don't wait for any.
4251 an additional duration to wait, measured in microseconds.
4252 If this is nonzero and time_limit is 0, then the timeout
4253 consists of MICROSECS only.
4255 READ_KBD is a lisp value:
4256 0 to ignore keyboard input, or
4257 1 to return when input is available, or
4258 -1 meaning caller will actually read the input, so don't throw to
4259 the quit handler, or
4261 DO_DISPLAY != 0 means redisplay should be done to show subprocess
4262 output that arrives.
4264 If WAIT_FOR_CELL is a cons cell, wait until its car is non-nil
4265 (and gobble terminal input into the buffer if any arrives).
4267 If WAIT_PROC is specified, wait until something arrives from that
4268 process. The return value is true iff we read some input from
4271 If JUST_WAIT_PROC is non-nil, handle only output from WAIT_PROC
4272 (suspending output from other processes). A negative value
4273 means don't run any timers either.
4275 If WAIT_PROC is specified, then the function returns true iff we
4276 received input from that process before the timeout elapsed.
4277 Otherwise, return true iff we received input from any process. */
4280 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
4281 wait_for_cell
, wait_proc
, just_wait_proc
)
4282 int time_limit
, microsecs
, read_kbd
, do_display
;
4283 Lisp_Object wait_for_cell
;
4284 struct Lisp_Process
*wait_proc
;
4287 register int channel
, nfds
;
4288 SELECT_TYPE Available
;
4289 #ifdef NON_BLOCKING_CONNECT
4290 SELECT_TYPE Connecting
;
4293 int check_delay
, no_avail
;
4296 EMACS_TIME timeout
, end_time
;
4297 int wait_channel
= -1;
4298 int got_some_input
= 0;
4299 int count
= SPECPDL_INDEX ();
4301 FD_ZERO (&Available
);
4302 #ifdef NON_BLOCKING_CONNECT
4303 FD_ZERO (&Connecting
);
4306 /* If wait_proc is a process to watch, set wait_channel accordingly. */
4307 if (wait_proc
!= NULL
)
4308 wait_channel
= XINT (wait_proc
->infd
);
4310 record_unwind_protect (wait_reading_process_output_unwind
,
4311 make_number (waiting_for_user_input_p
));
4312 waiting_for_user_input_p
= read_kbd
;
4314 /* Since we may need to wait several times,
4315 compute the absolute time to return at. */
4316 if (time_limit
|| microsecs
)
4318 EMACS_GET_TIME (end_time
);
4319 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
4320 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
4322 #ifdef POLL_INTERRUPTED_SYS_CALL
4323 /* AlainF 5-Jul-1996
4324 HP-UX 10.10 seem to have problems with signals coming in
4325 Causes "poll: interrupted system call" messages when Emacs is run
4327 Turn off periodic alarms (in case they are in use),
4328 and then turn off any other atimers. */
4330 turn_on_atimers (0);
4331 #endif /* POLL_INTERRUPTED_SYS_CALL */
4335 int timeout_reduced_for_timers
= 0;
4337 /* If calling from keyboard input, do not quit
4338 since we want to return C-g as an input character.
4339 Otherwise, do pending quit if requested. */
4343 else if (interrupt_input_pending
)
4344 handle_async_input ();
4347 /* Exit now if the cell we're waiting for became non-nil. */
4348 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4351 /* Compute time from now till when time limit is up */
4352 /* Exit if already run out */
4353 if (time_limit
== -1)
4355 /* -1 specified for timeout means
4356 gobble output available now
4357 but don't wait at all. */
4359 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4361 else if (time_limit
|| microsecs
)
4363 EMACS_GET_TIME (timeout
);
4364 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
4365 if (EMACS_TIME_NEG_P (timeout
))
4370 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
4373 /* Normally we run timers here.
4374 But not if wait_for_cell; in those cases,
4375 the wait is supposed to be short,
4376 and those callers cannot handle running arbitrary Lisp code here. */
4377 if (NILP (wait_for_cell
)
4378 && just_wait_proc
>= 0)
4380 EMACS_TIME timer_delay
;
4384 int old_timers_run
= timers_run
;
4385 struct buffer
*old_buffer
= current_buffer
;
4387 timer_delay
= timer_check (1);
4389 /* If a timer has run, this might have changed buffers
4390 an alike. Make read_key_sequence aware of that. */
4391 if (timers_run
!= old_timers_run
4392 && old_buffer
!= current_buffer
4393 && waiting_for_user_input_p
== -1)
4394 record_asynch_buffer_change ();
4396 if (timers_run
!= old_timers_run
&& do_display
)
4397 /* We must retry, since a timer may have requeued itself
4398 and that could alter the time_delay. */
4399 redisplay_preserve_echo_area (9);
4403 while (!detect_input_pending ());
4405 /* If there is unread keyboard input, also return. */
4407 && requeued_events_pending_p ())
4410 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
4412 EMACS_TIME difference
;
4413 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
4414 if (EMACS_TIME_NEG_P (difference
))
4416 timeout
= timer_delay
;
4417 timeout_reduced_for_timers
= 1;
4420 /* If time_limit is -1, we are not going to wait at all. */
4421 else if (time_limit
!= -1)
4423 /* This is so a breakpoint can be put here. */
4424 wait_reading_process_output_1 ();
4428 /* Cause C-g and alarm signals to take immediate action,
4429 and cause input available signals to zero out timeout.
4431 It is important that we do this before checking for process
4432 activity. If we get a SIGCHLD after the explicit checks for
4433 process activity, timeout is the only way we will know. */
4435 set_waiting_for_input (&timeout
);
4437 /* If status of something has changed, and no input is
4438 available, notify the user of the change right away. After
4439 this explicit check, we'll let the SIGCHLD handler zap
4440 timeout to get our attention. */
4441 if (update_tick
!= process_tick
&& do_display
)
4444 #ifdef NON_BLOCKING_CONNECT
4448 Atemp
= input_wait_mask
;
4450 /* On Mac OS X 10.0, the SELECT system call always says input is
4451 present (for reading) at stdin, even when none is. This
4452 causes the call to SELECT below to return 1 and
4453 status_notify not to be called. As a result output of
4454 subprocesses are incorrectly discarded.
4458 IF_NON_BLOCKING_CONNECT (Ctemp
= connect_wait_mask
);
4460 EMACS_SET_SECS_USECS (timeout
, 0, 0);
4461 if ((select (max (max (max_process_desc
, max_keyboard_desc
),
4464 #ifdef NON_BLOCKING_CONNECT
4465 (num_pending_connects
> 0 ? &Ctemp
: (SELECT_TYPE
*)0),
4469 (SELECT_TYPE
*)0, &timeout
)
4472 /* It's okay for us to do this and then continue with
4473 the loop, since timeout has already been zeroed out. */
4474 clear_waiting_for_input ();
4475 status_notify (NULL
);
4479 /* Don't wait for output from a non-running process. Just
4480 read whatever data has already been received. */
4481 if (wait_proc
&& wait_proc
->raw_status_new
)
4482 update_status (wait_proc
);
4484 && ! EQ (wait_proc
->status
, Qrun
)
4485 && ! EQ (wait_proc
->status
, Qconnect
))
4487 int nread
, total_nread
= 0;
4489 clear_waiting_for_input ();
4490 XSETPROCESS (proc
, wait_proc
);
4492 /* Read data from the process, until we exhaust it. */
4493 while (XINT (wait_proc
->infd
) >= 0)
4495 nread
= read_process_output (proc
, XINT (wait_proc
->infd
));
4501 total_nread
+= nread
;
4503 else if (nread
== -1 && EIO
== errno
)
4507 else if (nread
== -1 && EAGAIN
== errno
)
4511 else if (nread
== -1 && EWOULDBLOCK
== errno
)
4515 if (total_nread
> 0 && do_display
)
4516 redisplay_preserve_echo_area (10);
4521 /* Wait till there is something to do */
4523 if (wait_proc
&& just_wait_proc
)
4525 if (XINT (wait_proc
->infd
) < 0) /* Terminated */
4527 FD_SET (XINT (wait_proc
->infd
), &Available
);
4529 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4531 else if (!NILP (wait_for_cell
))
4533 Available
= non_process_wait_mask
;
4535 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4540 Available
= non_keyboard_wait_mask
;
4542 Available
= input_wait_mask
;
4543 IF_NON_BLOCKING_CONNECT (check_connect
= (num_pending_connects
> 0));
4544 check_delay
= wait_channel
>= 0 ? 0 : process_output_delay_count
;
4547 /* If frame size has changed or the window is newly mapped,
4548 redisplay now, before we start to wait. There is a race
4549 condition here; if a SIGIO arrives between now and the select
4550 and indicates that a frame is trashed, the select may block
4551 displaying a trashed screen. */
4552 if (frame_garbaged
&& do_display
)
4554 clear_waiting_for_input ();
4555 redisplay_preserve_echo_area (11);
4557 set_waiting_for_input (&timeout
);
4561 if (read_kbd
&& detect_input_pending ())
4568 #ifdef NON_BLOCKING_CONNECT
4570 Connecting
= connect_wait_mask
;
4573 #ifdef ADAPTIVE_READ_BUFFERING
4574 /* Set the timeout for adaptive read buffering if any
4575 process has non-nil read_output_skip and non-zero
4576 read_output_delay, and we are not reading output for a
4577 specific wait_channel. It is not executed if
4578 Vprocess_adaptive_read_buffering is nil. */
4579 if (process_output_skip
&& check_delay
> 0)
4581 int usecs
= EMACS_USECS (timeout
);
4582 if (EMACS_SECS (timeout
) > 0 || usecs
> READ_OUTPUT_DELAY_MAX
)
4583 usecs
= READ_OUTPUT_DELAY_MAX
;
4584 for (channel
= 0; check_delay
> 0 && channel
<= max_process_desc
; channel
++)
4586 proc
= chan_process
[channel
];
4589 /* Find minimum non-zero read_output_delay among the
4590 processes with non-nil read_output_skip. */
4591 if (XINT (XPROCESS (proc
)->read_output_delay
) > 0)
4594 if (NILP (XPROCESS (proc
)->read_output_skip
))
4596 FD_CLR (channel
, &Available
);
4597 XPROCESS (proc
)->read_output_skip
= Qnil
;
4598 if (XINT (XPROCESS (proc
)->read_output_delay
) < usecs
)
4599 usecs
= XINT (XPROCESS (proc
)->read_output_delay
);
4602 EMACS_SET_SECS_USECS (timeout
, 0, usecs
);
4603 process_output_skip
= 0;
4607 nfds
= select (max (max (max_process_desc
, max_keyboard_desc
),
4610 #ifdef NON_BLOCKING_CONNECT
4611 (check_connect
? &Connecting
: (SELECT_TYPE
*)0),
4615 (SELECT_TYPE
*)0, &timeout
);
4620 /* Make C-g and alarm signals set flags again */
4621 clear_waiting_for_input ();
4623 /* If we woke up due to SIGWINCH, actually change size now. */
4624 do_pending_window_change (0);
4626 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
4627 /* We wanted the full specified time, so return now. */
4631 if (xerrno
== EINTR
)
4634 /* Ultrix select seems to return ENOMEM when it is
4635 interrupted. Treat it just like EINTR. Bleah. Note
4636 that we want to test for the "ultrix" CPP symbol, not
4637 "__ultrix__"; the latter is only defined under GCC, but
4638 not by DEC's bundled CC. -JimB */
4639 else if (xerrno
== ENOMEM
)
4643 /* This happens for no known reason on ALLIANT.
4644 I am guessing that this is the right response. -- RMS. */
4645 else if (xerrno
== EFAULT
)
4648 else if (xerrno
== EBADF
)
4651 /* AIX doesn't handle PTY closure the same way BSD does. On AIX,
4652 the child's closure of the pts gives the parent a SIGHUP, and
4653 the ptc file descriptor is automatically closed,
4654 yielding EBADF here or at select() call above.
4655 So, SIGHUP is ignored (see def of PTY_TTY_NAME_SPRINTF
4656 in m/ibmrt-aix.h), and here we just ignore the select error.
4657 Cleanup occurs c/o status_notify after SIGCLD. */
4658 no_avail
= 1; /* Cannot depend on values returned */
4664 error ("select error: %s", emacs_strerror (xerrno
));
4669 FD_ZERO (&Available
);
4670 IF_NON_BLOCKING_CONNECT (check_connect
= 0);
4673 #if defined(sun) && !defined(USG5_4)
4674 if (nfds
> 0 && keyboard_bit_set (&Available
)
4676 /* System sometimes fails to deliver SIGIO.
4678 David J. Mackenzie says that Emacs doesn't compile under
4679 Solaris if this code is enabled, thus the USG5_4 in the CPP
4680 conditional. "I haven't noticed any ill effects so far.
4681 If you find a Solaris expert somewhere, they might know
4683 kill (getpid (), SIGIO
);
4686 #if 0 /* When polling is used, interrupt_input is 0,
4687 so get_input_pending should read the input.
4688 So this should not be needed. */
4689 /* If we are using polling for input,
4690 and we see input available, make it get read now.
4691 Otherwise it might not actually get read for a second.
4692 And on hpux, since we turn off polling in wait_reading_process_output,
4693 it might never get read at all if we don't spend much time
4694 outside of wait_reading_process_output. */
4695 if (read_kbd
&& interrupt_input
4696 && keyboard_bit_set (&Available
)
4697 && input_polling_used ())
4698 kill (getpid (), SIGALRM
);
4701 /* Check for keyboard input */
4702 /* If there is any, return immediately
4703 to give it higher priority than subprocesses */
4707 int old_timers_run
= timers_run
;
4708 struct buffer
*old_buffer
= current_buffer
;
4711 if (detect_input_pending_run_timers (do_display
))
4713 swallow_events (do_display
);
4714 if (detect_input_pending_run_timers (do_display
))
4718 /* If a timer has run, this might have changed buffers
4719 an alike. Make read_key_sequence aware of that. */
4720 if (timers_run
!= old_timers_run
4721 && waiting_for_user_input_p
== -1
4722 && old_buffer
!= current_buffer
)
4723 record_asynch_buffer_change ();
4729 /* If there is unread keyboard input, also return. */
4731 && requeued_events_pending_p ())
4734 /* If we are not checking for keyboard input now,
4735 do process events (but don't run any timers).
4736 This is so that X events will be processed.
4737 Otherwise they may have to wait until polling takes place.
4738 That would causes delays in pasting selections, for example.
4740 (We used to do this only if wait_for_cell.) */
4741 if (read_kbd
== 0 && detect_input_pending ())
4743 swallow_events (do_display
);
4744 #if 0 /* Exiting when read_kbd doesn't request that seems wrong, though. */
4745 if (detect_input_pending ())
4750 /* Exit now if the cell we're waiting for became non-nil. */
4751 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
4755 /* If we think we have keyboard input waiting, but didn't get SIGIO,
4756 go read it. This can happen with X on BSD after logging out.
4757 In that case, there really is no input and no SIGIO,
4758 but select says there is input. */
4760 if (read_kbd
&& interrupt_input
4761 && keyboard_bit_set (&Available
) && ! noninteractive
)
4762 kill (getpid (), SIGIO
);
4766 got_some_input
|= nfds
> 0;
4768 /* If checking input just got us a size-change event from X,
4769 obey it now if we should. */
4770 if (read_kbd
|| ! NILP (wait_for_cell
))
4771 do_pending_window_change (0);
4773 /* Check for data from a process. */
4774 if (no_avail
|| nfds
== 0)
4777 /* Really FIRST_PROC_DESC should be 0 on Unix,
4778 but this is safer in the short run. */
4779 for (channel
= 0; channel
<= max_process_desc
; channel
++)
4781 if (FD_ISSET (channel
, &Available
)
4782 && FD_ISSET (channel
, &non_keyboard_wait_mask
))
4786 /* If waiting for this channel, arrange to return as
4787 soon as no more input to be processed. No more
4789 if (wait_channel
== channel
)
4795 proc
= chan_process
[channel
];
4799 /* If this is a server stream socket, accept connection. */
4800 if (EQ (XPROCESS (proc
)->status
, Qlisten
))
4802 server_accept_connection (proc
, channel
);
4806 /* Read data from the process, starting with our
4807 buffered-ahead character if we have one. */
4809 nread
= read_process_output (proc
, channel
);
4812 /* Since read_process_output can run a filter,
4813 which can call accept-process-output,
4814 don't try to read from any other processes
4815 before doing the select again. */
4816 FD_ZERO (&Available
);
4819 redisplay_preserve_echo_area (12);
4822 else if (nread
== -1 && errno
== EWOULDBLOCK
)
4825 /* ISC 4.1 defines both EWOULDBLOCK and O_NONBLOCK,
4826 and Emacs uses O_NONBLOCK, so what we get is EAGAIN. */
4828 else if (nread
== -1 && errno
== EAGAIN
)
4832 else if (nread
== -1 && errno
== EAGAIN
)
4834 /* Note that we cannot distinguish between no input
4835 available now and a closed pipe.
4836 With luck, a closed pipe will be accompanied by
4837 subprocess termination and SIGCHLD. */
4838 else if (nread
== 0 && !NETCONN_P (proc
))
4840 #endif /* O_NDELAY */
4841 #endif /* O_NONBLOCK */
4843 /* On some OSs with ptys, when the process on one end of
4844 a pty exits, the other end gets an error reading with
4845 errno = EIO instead of getting an EOF (0 bytes read).
4846 Therefore, if we get an error reading and errno =
4847 EIO, just continue, because the child process has
4848 exited and should clean itself up soon (e.g. when we
4851 However, it has been known to happen that the SIGCHLD
4852 got lost. So raise the signal again just in case.
4854 else if (nread
== -1 && errno
== EIO
)
4856 /* Clear the descriptor now, so we only raise the signal once. */
4857 FD_CLR (channel
, &input_wait_mask
);
4858 FD_CLR (channel
, &non_keyboard_wait_mask
);
4860 kill (getpid (), SIGCHLD
);
4862 #endif /* HAVE_PTYS */
4863 /* If we can detect process termination, don't consider the process
4864 gone just because its pipe is closed. */
4866 else if (nread
== 0 && !NETCONN_P (proc
))
4871 /* Preserve status of processes already terminated. */
4872 XSETINT (XPROCESS (proc
)->tick
, ++process_tick
);
4873 deactivate_process (proc
);
4874 if (XPROCESS (proc
)->raw_status_new
)
4875 update_status (XPROCESS (proc
));
4876 if (EQ (XPROCESS (proc
)->status
, Qrun
))
4877 XPROCESS (proc
)->status
4878 = Fcons (Qexit
, Fcons (make_number (256), Qnil
));
4881 #ifdef NON_BLOCKING_CONNECT
4882 if (check_connect
&& FD_ISSET (channel
, &Connecting
)
4883 && FD_ISSET (channel
, &connect_wait_mask
))
4885 struct Lisp_Process
*p
;
4887 FD_CLR (channel
, &connect_wait_mask
);
4888 if (--num_pending_connects
< 0)
4891 proc
= chan_process
[channel
];
4895 p
= XPROCESS (proc
);
4898 /* getsockopt(,,SO_ERROR,,) is said to hang on some systems.
4899 So only use it on systems where it is known to work. */
4901 int xlen
= sizeof(xerrno
);
4902 if (getsockopt(channel
, SOL_SOCKET
, SO_ERROR
, &xerrno
, &xlen
))
4907 struct sockaddr pname
;
4908 int pnamelen
= sizeof(pname
);
4910 /* If connection failed, getpeername will fail. */
4912 if (getpeername(channel
, &pname
, &pnamelen
) < 0)
4914 /* Obtain connect failure code through error slippage. */
4917 if (errno
== ENOTCONN
&& read(channel
, &dummy
, 1) < 0)
4924 XSETINT (p
->tick
, ++process_tick
);
4925 p
->status
= Fcons (Qfailed
, Fcons (make_number (xerrno
), Qnil
));
4926 deactivate_process (proc
);
4931 /* Execute the sentinel here. If we had relied on
4932 status_notify to do it later, it will read input
4933 from the process before calling the sentinel. */
4934 exec_sentinel (proc
, build_string ("open\n"));
4935 if (!EQ (p
->filter
, Qt
) && !EQ (p
->command
, Qt
))
4937 FD_SET (XINT (p
->infd
), &input_wait_mask
);
4938 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
4942 #endif /* NON_BLOCKING_CONNECT */
4943 } /* end for each file descriptor */
4944 } /* end while exit conditions not met */
4946 unbind_to (count
, Qnil
);
4948 /* If calling from keyboard input, do not quit
4949 since we want to return C-g as an input character.
4950 Otherwise, do pending quit if requested. */
4953 /* Prevent input_pending from remaining set if we quit. */
4954 clear_input_pending ();
4957 #ifdef POLL_INTERRUPTED_SYS_CALL
4958 /* AlainF 5-Jul-1996
4959 HP-UX 10.10 seems to have problems with signals coming in
4960 Causes "poll: interrupted system call" messages when Emacs is run
4962 Turn periodic alarms back on */
4964 #endif /* POLL_INTERRUPTED_SYS_CALL */
4966 return got_some_input
;
4969 /* Given a list (FUNCTION ARGS...), apply FUNCTION to the ARGS. */
4972 read_process_output_call (fun_and_args
)
4973 Lisp_Object fun_and_args
;
4975 return apply1 (XCAR (fun_and_args
), XCDR (fun_and_args
));
4979 read_process_output_error_handler (error
)
4982 cmd_error_internal (error
, "error in process filter: ");
4984 update_echo_area ();
4985 Fsleep_for (make_number (2), Qnil
);
4989 /* Read pending output from the process channel,
4990 starting with our buffered-ahead character if we have one.
4991 Yield number of decoded characters read.
4993 This function reads at most 4096 characters.
4994 If you want to read all available subprocess output,
4995 you must call it repeatedly until it returns zero.
4997 The characters read are decoded according to PROC's coding-system
5001 read_process_output (proc
, channel
)
5003 register int channel
;
5005 register int nbytes
;
5007 register Lisp_Object outstream
;
5008 register struct buffer
*old
= current_buffer
;
5009 register struct Lisp_Process
*p
= XPROCESS (proc
);
5010 register int opoint
;
5011 struct coding_system
*coding
= proc_decode_coding_system
[channel
];
5012 int carryover
= XINT (p
->decoding_carryover
);
5016 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5018 vs
= get_vms_process_pointer (p
->pid
);
5022 return (0); /* Really weird if it does this */
5023 if (!(vs
->iosb
[0] & 1))
5024 return -1; /* I/O error */
5027 error ("Could not get VMS process pointer");
5028 chars
= vs
->inputBuffer
;
5029 nbytes
= clean_vms_buffer (chars
, vs
->iosb
[1]);
5032 start_vms_process_read (vs
); /* Crank up the next read on the process */
5033 return 1; /* Nothing worth printing, say we got 1 */
5037 /* The data carried over in the previous decoding (which are at
5038 the tail of decoding buffer) should be prepended to the new
5039 data read to decode all together. */
5040 chars
= (char *) alloca (nbytes
+ carryover
);
5041 bcopy (SDATA (p
->decoding_buf
), buf
, carryover
);
5042 bcopy (vs
->inputBuffer
, chars
+ carryover
, nbytes
);
5046 chars
= (char *) alloca (carryover
+ readmax
);
5048 /* See the comment above. */
5049 bcopy (SDATA (p
->decoding_buf
), chars
, carryover
);
5051 #ifdef DATAGRAM_SOCKETS
5052 /* We have a working select, so proc_buffered_char is always -1. */
5053 if (DATAGRAM_CHAN_P (channel
))
5055 int len
= datagram_address
[channel
].len
;
5056 nbytes
= recvfrom (channel
, chars
+ carryover
, readmax
,
5057 0, datagram_address
[channel
].sa
, &len
);
5061 if (proc_buffered_char
[channel
] < 0)
5063 nbytes
= emacs_read (channel
, chars
+ carryover
, readmax
);
5064 #ifdef ADAPTIVE_READ_BUFFERING
5065 if (nbytes
> 0 && !NILP (p
->adaptive_read_buffering
))
5067 int delay
= XINT (p
->read_output_delay
);
5070 if (delay
< READ_OUTPUT_DELAY_MAX_MAX
)
5073 process_output_delay_count
++;
5074 delay
+= READ_OUTPUT_DELAY_INCREMENT
* 2;
5077 else if (delay
> 0 && (nbytes
== readmax
))
5079 delay
-= READ_OUTPUT_DELAY_INCREMENT
;
5081 process_output_delay_count
--;
5083 XSETINT (p
->read_output_delay
, delay
);
5086 p
->read_output_skip
= Qt
;
5087 process_output_skip
= 1;
5094 chars
[carryover
] = proc_buffered_char
[channel
];
5095 proc_buffered_char
[channel
] = -1;
5096 nbytes
= emacs_read (channel
, chars
+ carryover
+ 1, readmax
- 1);
5100 nbytes
= nbytes
+ 1;
5102 #endif /* not VMS */
5104 XSETINT (p
->decoding_carryover
, 0);
5106 /* At this point, NBYTES holds number of bytes just received
5107 (including the one in proc_buffered_char[channel]). */
5110 if (nbytes
< 0 || coding
->mode
& CODING_MODE_LAST_BLOCK
)
5112 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5115 /* Now set NBYTES how many bytes we must decode. */
5116 nbytes
+= carryover
;
5118 /* Read and dispose of the process output. */
5119 outstream
= p
->filter
;
5120 if (!NILP (outstream
))
5122 /* We inhibit quit here instead of just catching it so that
5123 hitting ^G when a filter happens to be running won't screw
5125 int count
= SPECPDL_INDEX ();
5126 Lisp_Object odeactivate
;
5127 Lisp_Object obuffer
, okeymap
;
5129 int outer_running_asynch_code
= running_asynch_code
;
5130 int waiting
= waiting_for_user_input_p
;
5132 /* No need to gcpro these, because all we do with them later
5133 is test them for EQness, and none of them should be a string. */
5134 odeactivate
= Vdeactivate_mark
;
5135 XSETBUFFER (obuffer
, current_buffer
);
5136 okeymap
= current_buffer
->keymap
;
5138 specbind (Qinhibit_quit
, Qt
);
5139 specbind (Qlast_nonmenu_event
, Qt
);
5141 /* In case we get recursively called,
5142 and we already saved the match data nonrecursively,
5143 save the same match data in safely recursive fashion. */
5144 if (outer_running_asynch_code
)
5147 /* Don't clobber the CURRENT match data, either! */
5148 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
5149 restore_search_regs ();
5150 record_unwind_save_match_data ();
5151 Fset_match_data (tem
, Qt
);
5154 /* For speed, if a search happens within this code,
5155 save the match data in a special nonrecursive fashion. */
5156 running_asynch_code
= 1;
5158 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5160 Vlast_coding_system_used
= coding
->symbol
;
5161 /* A new coding system might be found. */
5162 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5164 p
->decode_coding_system
= coding
->symbol
;
5166 /* Don't call setup_coding_system for
5167 proc_decode_coding_system[channel] here. It is done in
5168 detect_coding called via decode_coding above. */
5170 /* If a coding system for encoding is not yet decided, we set
5171 it as the same as coding-system for decoding.
5173 But, before doing that we must check if
5174 proc_encode_coding_system[p->outfd] surely points to a
5175 valid memory because p->outfd will be changed once EOF is
5176 sent to the process. */
5177 if (NILP (p
->encode_coding_system
)
5178 && proc_encode_coding_system
[XINT (p
->outfd
)])
5180 p
->encode_coding_system
= coding
->symbol
;
5181 setup_coding_system (coding
->symbol
,
5182 proc_encode_coding_system
[XINT (p
->outfd
)]);
5183 if (proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5184 == CODING_EOL_UNDECIDED
)
5185 proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5190 carryover
= nbytes
- coding
->consumed
;
5194 if (SCHARS (p
->decoding_buf
) < carryover
)
5195 p
->decoding_buf
= make_uninit_string (carryover
);
5196 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5198 XSETINT (p
->decoding_carryover
, carryover
);
5199 /* Adjust the multibyteness of TEXT to that of the filter. */
5200 if (NILP (p
->filter_multibyte
) != ! STRING_MULTIBYTE (text
))
5201 text
= (STRING_MULTIBYTE (text
)
5202 ? Fstring_as_unibyte (text
)
5203 : Fstring_to_multibyte (text
));
5204 if (SBYTES (text
) > 0)
5205 internal_condition_case_1 (read_process_output_call
,
5207 Fcons (proc
, Fcons (text
, Qnil
))),
5208 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
5209 read_process_output_error_handler
);
5211 /* If we saved the match data nonrecursively, restore it now. */
5212 restore_search_regs ();
5213 running_asynch_code
= outer_running_asynch_code
;
5215 /* Handling the process output should not deactivate the mark. */
5216 Vdeactivate_mark
= odeactivate
;
5218 /* Restore waiting_for_user_input_p as it was
5219 when we were called, in case the filter clobbered it. */
5220 waiting_for_user_input_p
= waiting
;
5222 #if 0 /* Call record_asynch_buffer_change unconditionally,
5223 because we might have changed minor modes or other things
5224 that affect key bindings. */
5225 if (! EQ (Fcurrent_buffer (), obuffer
)
5226 || ! EQ (current_buffer
->keymap
, okeymap
))
5228 /* But do it only if the caller is actually going to read events.
5229 Otherwise there's no need to make him wake up, and it could
5230 cause trouble (for example it would make sit_for return). */
5231 if (waiting_for_user_input_p
== -1)
5232 record_asynch_buffer_change ();
5235 start_vms_process_read (vs
);
5237 unbind_to (count
, Qnil
);
5241 /* If no filter, write into buffer if it isn't dead. */
5242 if (!NILP (p
->buffer
) && !NILP (XBUFFER (p
->buffer
)->name
))
5244 Lisp_Object old_read_only
;
5245 int old_begv
, old_zv
;
5246 int old_begv_byte
, old_zv_byte
;
5247 Lisp_Object odeactivate
;
5248 int before
, before_byte
;
5253 odeactivate
= Vdeactivate_mark
;
5255 Fset_buffer (p
->buffer
);
5257 opoint_byte
= PT_BYTE
;
5258 old_read_only
= current_buffer
->read_only
;
5261 old_begv_byte
= BEGV_BYTE
;
5262 old_zv_byte
= ZV_BYTE
;
5264 current_buffer
->read_only
= Qnil
;
5266 /* Insert new output into buffer
5267 at the current end-of-output marker,
5268 thus preserving logical ordering of input and output. */
5269 if (XMARKER (p
->mark
)->buffer
)
5270 SET_PT_BOTH (clip_to_bounds (BEGV
, marker_position (p
->mark
), ZV
),
5271 clip_to_bounds (BEGV_BYTE
, marker_byte_position (p
->mark
),
5274 SET_PT_BOTH (ZV
, ZV_BYTE
);
5276 before_byte
= PT_BYTE
;
5278 /* If the output marker is outside of the visible region, save
5279 the restriction and widen. */
5280 if (! (BEGV
<= PT
&& PT
<= ZV
))
5283 text
= decode_coding_string (make_unibyte_string (chars
, nbytes
),
5285 Vlast_coding_system_used
= coding
->symbol
;
5286 /* A new coding system might be found. See the comment in the
5287 similar code in the previous `if' block. */
5288 if (!EQ (p
->decode_coding_system
, coding
->symbol
))
5290 p
->decode_coding_system
= coding
->symbol
;
5291 if (NILP (p
->encode_coding_system
)
5292 && proc_encode_coding_system
[XINT (p
->outfd
)])
5294 p
->encode_coding_system
= coding
->symbol
;
5295 setup_coding_system (coding
->symbol
,
5296 proc_encode_coding_system
[XINT (p
->outfd
)]);
5297 if (proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5298 == CODING_EOL_UNDECIDED
)
5299 proc_encode_coding_system
[XINT (p
->outfd
)]->eol_type
5303 carryover
= nbytes
- coding
->consumed
;
5307 if (SCHARS (p
->decoding_buf
) < carryover
)
5308 p
->decoding_buf
= make_uninit_string (carryover
);
5309 bcopy (chars
+ coding
->consumed
, SDATA (p
->decoding_buf
),
5311 XSETINT (p
->decoding_carryover
, carryover
);
5313 /* Adjust the multibyteness of TEXT to that of the buffer. */
5314 if (NILP (current_buffer
->enable_multibyte_characters
)
5315 != ! STRING_MULTIBYTE (text
))
5316 text
= (STRING_MULTIBYTE (text
)
5317 ? Fstring_as_unibyte (text
)
5318 : Fstring_to_multibyte (text
));
5319 /* Insert before markers in case we are inserting where
5320 the buffer's mark is, and the user's next command is Meta-y. */
5321 insert_from_string_before_markers (text
, 0, 0,
5322 SCHARS (text
), SBYTES (text
), 0);
5324 /* Make sure the process marker's position is valid when the
5325 process buffer is changed in the signal_after_change above.
5326 W3 is known to do that. */
5327 if (BUFFERP (p
->buffer
)
5328 && (b
= XBUFFER (p
->buffer
), b
!= current_buffer
))
5329 set_marker_both (p
->mark
, p
->buffer
, BUF_PT (b
), BUF_PT_BYTE (b
));
5331 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
5333 update_mode_lines
++;
5335 /* Make sure opoint and the old restrictions
5336 float ahead of any new text just as point would. */
5337 if (opoint
>= before
)
5339 opoint
+= PT
- before
;
5340 opoint_byte
+= PT_BYTE
- before_byte
;
5342 if (old_begv
> before
)
5344 old_begv
+= PT
- before
;
5345 old_begv_byte
+= PT_BYTE
- before_byte
;
5347 if (old_zv
>= before
)
5349 old_zv
+= PT
- before
;
5350 old_zv_byte
+= PT_BYTE
- before_byte
;
5353 /* If the restriction isn't what it should be, set it. */
5354 if (old_begv
!= BEGV
|| old_zv
!= ZV
)
5355 Fnarrow_to_region (make_number (old_begv
), make_number (old_zv
));
5357 /* Handling the process output should not deactivate the mark. */
5358 Vdeactivate_mark
= odeactivate
;
5360 current_buffer
->read_only
= old_read_only
;
5361 SET_PT_BOTH (opoint
, opoint_byte
);
5362 set_buffer_internal (old
);
5365 start_vms_process_read (vs
);
5370 DEFUN ("waiting-for-user-input-p", Fwaiting_for_user_input_p
, Swaiting_for_user_input_p
,
5372 doc
: /* Returns non-nil if Emacs is waiting for input from the user.
5373 This is intended for use by asynchronous process output filters and sentinels. */)
5376 return (waiting_for_user_input_p
? Qt
: Qnil
);
5379 /* Sending data to subprocess */
5381 jmp_buf send_process_frame
;
5382 Lisp_Object process_sent_to
;
5385 send_process_trap ()
5387 SIGNAL_THREAD_CHECK (SIGPIPE
);
5392 sigunblock (sigmask (SIGPIPE
));
5393 longjmp (send_process_frame
, 1);
5396 /* Send some data to process PROC.
5397 BUF is the beginning of the data; LEN is the number of characters.
5398 OBJECT is the Lisp object that the data comes from. If OBJECT is
5399 nil or t, it means that the data comes from C string.
5401 If OBJECT is not nil, the data is encoded by PROC's coding-system
5402 for encoding before it is sent.
5404 This function can evaluate Lisp code and can garbage collect. */
5407 send_process (proc
, buf
, len
, object
)
5408 volatile Lisp_Object proc
;
5409 unsigned char *volatile buf
;
5411 volatile Lisp_Object object
;
5413 /* Use volatile to protect variables from being clobbered by longjmp. */
5414 struct Lisp_Process
*p
= XPROCESS (proc
);
5416 struct coding_system
*coding
;
5417 struct gcpro gcpro1
;
5418 SIGTYPE (*volatile old_sigpipe
) ();
5423 VMS_PROC_STUFF
*vs
, *get_vms_process_pointer();
5426 if (p
->raw_status_new
)
5428 if (! EQ (p
->status
, Qrun
))
5429 error ("Process %s not running", SDATA (p
->name
));
5430 if (XINT (p
->outfd
) < 0)
5431 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5433 coding
= proc_encode_coding_system
[XINT (p
->outfd
)];
5434 Vlast_coding_system_used
= coding
->symbol
;
5436 if ((STRINGP (object
) && STRING_MULTIBYTE (object
))
5437 || (BUFFERP (object
)
5438 && !NILP (XBUFFER (object
)->enable_multibyte_characters
))
5441 if (!EQ (coding
->symbol
, p
->encode_coding_system
))
5442 /* The coding system for encoding was changed to raw-text
5443 because we sent a unibyte text previously. Now we are
5444 sending a multibyte text, thus we must encode it by the
5445 original coding system specified for the current process. */
5446 setup_coding_system (p
->encode_coding_system
, coding
);
5447 if (coding
->eol_type
== CODING_EOL_UNDECIDED
)
5448 coding
->eol_type
= system_eol_type
;
5449 /* src_multibyte should be set to 1 _after_ a call to
5450 setup_coding_system, since it resets src_multibyte to
5452 coding
->src_multibyte
= 1;
5456 /* For sending a unibyte text, character code conversion should
5457 not take place but EOL conversion should. So, setup raw-text
5458 or one of the subsidiary if we have not yet done it. */
5459 if (coding
->type
!= coding_type_raw_text
)
5461 if (CODING_REQUIRE_FLUSHING (coding
))
5463 /* But, before changing the coding, we must flush out data. */
5464 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
5465 send_process (proc
, "", 0, Qt
);
5467 coding
->src_multibyte
= 0;
5468 setup_raw_text_coding_system (coding
);
5471 coding
->dst_multibyte
= 0;
5473 if (CODING_REQUIRE_ENCODING (coding
))
5475 int require
= encoding_buffer_size (coding
, len
);
5476 int from_byte
= -1, from
= -1, to
= -1;
5478 if (BUFFERP (object
))
5480 from_byte
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5481 from
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
);
5482 to
= buf_bytepos_to_charpos (XBUFFER (object
), from_byte
+ len
);
5484 else if (STRINGP (object
))
5486 from_byte
= buf
- SDATA (object
);
5487 from
= string_byte_to_char (object
, from_byte
);
5488 to
= string_byte_to_char (object
, from_byte
+ len
);
5491 if (coding
->composing
!= COMPOSITION_DISABLED
)
5494 coding_save_composition (coding
, from
, to
, object
);
5496 coding
->composing
= COMPOSITION_DISABLED
;
5499 if (SBYTES (p
->encoding_buf
) < require
)
5500 p
->encoding_buf
= make_uninit_string (require
);
5503 buf
= (BUFFERP (object
)
5504 ? BUF_BYTE_ADDRESS (XBUFFER (object
), from_byte
)
5505 : SDATA (object
) + from_byte
);
5507 object
= p
->encoding_buf
;
5508 encode_coding (coding
, (char *) buf
, SDATA (object
),
5509 len
, SBYTES (object
));
5510 coding_free_composition_data (coding
);
5511 len
= coding
->produced
;
5512 buf
= SDATA (object
);
5516 vs
= get_vms_process_pointer (p
->pid
);
5518 error ("Could not find this process: %x", p
->pid
);
5519 else if (write_to_vms_process (vs
, buf
, len
))
5523 if (pty_max_bytes
== 0)
5525 #if defined (HAVE_FPATHCONF) && defined (_PC_MAX_CANON)
5526 pty_max_bytes
= fpathconf (XFASTINT (p
->outfd
), _PC_MAX_CANON
);
5527 if (pty_max_bytes
< 0)
5528 pty_max_bytes
= 250;
5530 pty_max_bytes
= 250;
5532 /* Deduct one, to leave space for the eof. */
5536 /* 2000-09-21: Emacs 20.7, sparc-sun-solaris-2.6, GCC 2.95.2,
5537 CFLAGS="-g -O": The value of the parameter `proc' is clobbered
5538 when returning with longjmp despite being declared volatile. */
5539 if (!setjmp (send_process_frame
))
5541 process_sent_to
= proc
;
5546 /* Decide how much data we can send in one batch.
5547 Long lines need to be split into multiple batches. */
5548 if (!NILP (p
->pty_flag
))
5550 /* Starting this at zero is always correct when not the first
5551 iteration because the previous iteration ended by sending C-d.
5552 It may not be correct for the first iteration
5553 if a partial line was sent in a separate send_process call.
5554 If that proves worth handling, we need to save linepos
5555 in the process object. */
5557 unsigned char *ptr
= (unsigned char *) buf
;
5558 unsigned char *end
= (unsigned char *) buf
+ len
;
5560 /* Scan through this text for a line that is too long. */
5561 while (ptr
!= end
&& linepos
< pty_max_bytes
)
5569 /* If we found one, break the line there
5570 and put in a C-d to force the buffer through. */
5574 /* Send this batch, using one or more write calls. */
5577 int outfd
= XINT (p
->outfd
);
5578 old_sigpipe
= (SIGTYPE (*) ()) signal (SIGPIPE
, send_process_trap
);
5579 #ifdef DATAGRAM_SOCKETS
5580 if (DATAGRAM_CHAN_P (outfd
))
5582 rv
= sendto (outfd
, (char *) buf
, this,
5583 0, datagram_address
[outfd
].sa
,
5584 datagram_address
[outfd
].len
);
5585 if (rv
< 0 && errno
== EMSGSIZE
)
5587 signal (SIGPIPE
, old_sigpipe
);
5588 report_file_error ("sending datagram",
5589 Fcons (proc
, Qnil
));
5595 rv
= emacs_write (outfd
, (char *) buf
, this);
5596 #ifdef ADAPTIVE_READ_BUFFERING
5597 if (XINT (p
->read_output_delay
) > 0
5598 && EQ (p
->adaptive_read_buffering
, Qt
))
5600 XSETFASTINT (p
->read_output_delay
, 0);
5601 process_output_delay_count
--;
5602 p
->read_output_skip
= Qnil
;
5606 signal (SIGPIPE
, old_sigpipe
);
5612 || errno
== EWOULDBLOCK
5618 /* Buffer is full. Wait, accepting input;
5619 that may allow the program
5620 to finish doing output and read more. */
5624 #ifdef BROKEN_PTY_READ_AFTER_EAGAIN
5625 /* A gross hack to work around a bug in FreeBSD.
5626 In the following sequence, read(2) returns
5630 write(2) 954 bytes, get EAGAIN
5631 read(2) 1024 bytes in process_read_output
5632 read(2) 11 bytes in process_read_output
5634 That is, read(2) returns more bytes than have
5635 ever been written successfully. The 1033 bytes
5636 read are the 1022 bytes written successfully
5637 after processing (for example with CRs added if
5638 the terminal is set up that way which it is
5639 here). The same bytes will be seen again in a
5640 later read(2), without the CRs. */
5642 if (errno
== EAGAIN
)
5645 ioctl (XINT (p
->outfd
), TIOCFLUSH
, &flags
);
5647 #endif /* BROKEN_PTY_READ_AFTER_EAGAIN */
5649 /* Running filters might relocate buffers or strings.
5650 Arrange to relocate BUF. */
5651 if (BUFFERP (object
))
5652 offset
= BUF_PTR_BYTE_POS (XBUFFER (object
), buf
);
5653 else if (STRINGP (object
))
5654 offset
= buf
- SDATA (object
);
5656 #ifdef EMACS_HAS_USECS
5657 wait_reading_process_output (0, 20000, 0, 0, Qnil
, NULL
, 0);
5659 wait_reading_process_output (1, 0, 0, 0, Qnil
, NULL
, 0);
5662 if (BUFFERP (object
))
5663 buf
= BUF_BYTE_ADDRESS (XBUFFER (object
), offset
);
5664 else if (STRINGP (object
))
5665 buf
= offset
+ SDATA (object
);
5670 /* This is a real error. */
5671 report_file_error ("writing to process", Fcons (proc
, Qnil
));
5678 /* If we sent just part of the string, put in an EOF
5679 to force it through, before we send the rest. */
5681 Fprocess_send_eof (proc
);
5684 #endif /* not VMS */
5687 signal (SIGPIPE
, old_sigpipe
);
5689 proc
= process_sent_to
;
5690 p
= XPROCESS (proc
);
5692 p
->raw_status_new
= 0;
5693 p
->status
= Fcons (Qexit
, Fcons (make_number (256), Qnil
));
5694 XSETINT (p
->tick
, ++process_tick
);
5695 deactivate_process (proc
);
5697 error ("Error writing to process %s; closed it", SDATA (p
->name
));
5699 error ("SIGPIPE raised on process %s; closed it", SDATA (p
->name
));
5707 send_process_object_unwind (buf
)
5712 if (XBUFFER (buf
) == current_buffer
)
5714 tembuf
= Fcurrent_buffer ();
5716 Fkill_buffer (tembuf
);
5720 /* Send current contents of region between START and END to PROC.
5721 If START is a string, send it instead.
5722 This function can evaluate Lisp code and can garbage collect. */
5725 send_process_object (proc
, start
, end
)
5726 Lisp_Object proc
, start
, end
;
5728 int count
= SPECPDL_INDEX ();
5729 Lisp_Object object
= STRINGP (start
) ? start
: Fcurrent_buffer ();
5730 struct buffer
*given_buffer
= current_buffer
;
5734 record_unwind_protect (send_process_object_unwind
, Fcurrent_buffer ());
5736 if (STRINGP (object
) ? STRING_MULTIBYTE (object
)
5737 : ! NILP (XBUFFER (object
)->enable_multibyte_characters
))
5739 struct Lisp_Process
*p
= XPROCESS (proc
);
5740 struct coding_system
*coding
;
5742 if (p
->raw_status_new
)
5744 if (! EQ (p
->status
, Qrun
))
5745 error ("Process %s not running", SDATA (p
->name
));
5746 if (XINT (p
->outfd
) < 0)
5747 error ("Output file descriptor of %s is closed", SDATA (p
->name
));
5749 coding
= proc_encode_coding_system
[XINT (p
->outfd
)];
5750 if (! EQ (coding
->symbol
, p
->encode_coding_system
))
5751 /* The coding system for encoding was changed to raw-text
5752 because we sent a unibyte text previously. Now we are
5753 sending a multibyte text, thus we must encode it by the
5754 original coding system specified for the current process. */
5755 setup_coding_system (p
->encode_coding_system
, coding
);
5756 if (! NILP (coding
->pre_write_conversion
))
5758 struct gcpro gcpro1
, gcpro2
;
5760 GCPRO2 (proc
, object
);
5761 call2 (coding
->pre_write_conversion
, start
, end
);
5763 if (given_buffer
!= current_buffer
)
5765 start
= make_number (BEGV
), end
= make_number (ZV
);
5766 object
= Fcurrent_buffer ();
5771 if (BUFFERP (object
))
5773 EMACS_INT start_byte
;
5775 if (XINT (start
) < GPT
&& XINT (end
) > GPT
)
5776 move_gap (XINT (end
));
5777 start_byte
= CHAR_TO_BYTE (XINT (start
));
5778 buf
= BYTE_POS_ADDR (start_byte
);
5779 len
= CHAR_TO_BYTE (XINT (end
)) - start_byte
;
5783 buf
= SDATA (object
);
5784 len
= SBYTES (object
);
5786 send_process (proc
, buf
, len
, object
);
5788 unbind_to (count
, Qnil
);
5791 DEFUN ("process-send-region", Fprocess_send_region
, Sprocess_send_region
,
5793 doc
: /* Send current contents of region as input to PROCESS.
5794 PROCESS may be a process, a buffer, the name of a process or buffer, or
5795 nil, indicating the current buffer's process.
5796 Called from program, takes three arguments, PROCESS, START and END.
5797 If the region is more than 500 characters long,
5798 it is sent in several bunches. This may happen even for shorter regions.
5799 Output from processes can arrive in between bunches. */)
5800 (process
, start
, end
)
5801 Lisp_Object process
, start
, end
;
5805 proc
= get_process (process
);
5806 validate_region (&start
, &end
);
5807 send_process_object (proc
, start
, end
);
5811 DEFUN ("process-send-string", Fprocess_send_string
, Sprocess_send_string
,
5813 doc
: /* Send PROCESS the contents of STRING as input.
5814 PROCESS may be a process, a buffer, the name of a process or buffer, or
5815 nil, indicating the current buffer's process.
5816 If STRING is more than 500 characters long,
5817 it is sent in several bunches. This may happen even for shorter strings.
5818 Output from processes can arrive in between bunches. */)
5820 Lisp_Object process
, string
;
5823 CHECK_STRING (string
);
5824 proc
= get_process (process
);
5825 send_process_object (proc
, string
, Qnil
);
5829 /* Return the foreground process group for the tty/pty that
5830 the process P uses. */
5832 emacs_get_tty_pgrp (p
)
5833 struct Lisp_Process
*p
;
5838 if (ioctl (XINT (p
->infd
), TIOCGPGRP
, &gid
) == -1 && ! NILP (p
->tty_name
))
5841 /* Some OS:es (Solaris 8/9) does not allow TIOCGPGRP from the
5842 master side. Try the slave side. */
5843 fd
= emacs_open (XSTRING (p
->tty_name
)->data
, O_RDONLY
, 0);
5847 ioctl (fd
, TIOCGPGRP
, &gid
);
5851 #endif /* defined (TIOCGPGRP ) */
5856 DEFUN ("process-running-child-p", Fprocess_running_child_p
,
5857 Sprocess_running_child_p
, 0, 1, 0,
5858 doc
: /* Return t if PROCESS has given the terminal to a child.
5859 If the operating system does not make it possible to find out,
5860 return t unconditionally. */)
5862 Lisp_Object process
;
5864 /* Initialize in case ioctl doesn't exist or gives an error,
5865 in a way that will cause returning t. */
5868 struct Lisp_Process
*p
;
5870 proc
= get_process (process
);
5871 p
= XPROCESS (proc
);
5873 if (!EQ (p
->childp
, Qt
))
5874 error ("Process %s is not a subprocess",
5876 if (XINT (p
->infd
) < 0)
5877 error ("Process %s is not active",
5880 gid
= emacs_get_tty_pgrp (p
);
5887 /* send a signal number SIGNO to PROCESS.
5888 If CURRENT_GROUP is t, that means send to the process group
5889 that currently owns the terminal being used to communicate with PROCESS.
5890 This is used for various commands in shell mode.
5891 If CURRENT_GROUP is lambda, that means send to the process group
5892 that currently owns the terminal, but only if it is NOT the shell itself.
5894 If NOMSG is zero, insert signal-announcements into process's buffers
5897 If we can, we try to signal PROCESS by sending control characters
5898 down the pty. This allows us to signal inferiors who have changed
5899 their uid, for which killpg would return an EPERM error. */
5902 process_send_signal (process
, signo
, current_group
, nomsg
)
5903 Lisp_Object process
;
5905 Lisp_Object current_group
;
5909 register struct Lisp_Process
*p
;
5913 proc
= get_process (process
);
5914 p
= XPROCESS (proc
);
5916 if (!EQ (p
->childp
, Qt
))
5917 error ("Process %s is not a subprocess",
5919 if (XINT (p
->infd
) < 0)
5920 error ("Process %s is not active",
5923 if (NILP (p
->pty_flag
))
5924 current_group
= Qnil
;
5926 /* If we are using pgrps, get a pgrp number and make it negative. */
5927 if (NILP (current_group
))
5928 /* Send the signal to the shell's process group. */
5932 #ifdef SIGNALS_VIA_CHARACTERS
5933 /* If possible, send signals to the entire pgrp
5934 by sending an input character to it. */
5936 /* TERMIOS is the latest and bestest, and seems most likely to
5937 work. If the system has it, use it. */
5940 cc_t
*sig_char
= NULL
;
5942 tcgetattr (XINT (p
->infd
), &t
);
5947 sig_char
= &t
.c_cc
[VINTR
];
5951 sig_char
= &t
.c_cc
[VQUIT
];
5955 #if defined (VSWTCH) && !defined (PREFER_VSUSP)
5956 sig_char
= &t
.c_cc
[VSWTCH
];
5958 sig_char
= &t
.c_cc
[VSUSP
];
5963 if (sig_char
&& *sig_char
!= CDISABLE
)
5965 send_process (proc
, sig_char
, 1, Qnil
);
5968 /* If we can't send the signal with a character,
5969 fall through and send it another way. */
5970 #else /* ! HAVE_TERMIOS */
5972 /* On Berkeley descendants, the following IOCTL's retrieve the
5973 current control characters. */
5974 #if defined (TIOCGLTC) && defined (TIOCGETC)
5982 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5983 send_process (proc
, &c
.t_intrc
, 1, Qnil
);
5986 ioctl (XINT (p
->infd
), TIOCGETC
, &c
);
5987 send_process (proc
, &c
.t_quitc
, 1, Qnil
);
5991 ioctl (XINT (p
->infd
), TIOCGLTC
, &lc
);
5992 send_process (proc
, &lc
.t_suspc
, 1, Qnil
);
5994 #endif /* ! defined (SIGTSTP) */
5997 #else /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
5999 /* On SYSV descendants, the TCGETA ioctl retrieves the current control
6006 ioctl (XINT (p
->infd
), TCGETA
, &t
);
6007 send_process (proc
, &t
.c_cc
[VINTR
], 1, Qnil
);
6010 ioctl (XINT (p
->infd
), TCGETA
, &t
);
6011 send_process (proc
, &t
.c_cc
[VQUIT
], 1, Qnil
);
6015 ioctl (XINT (p
->infd
), TCGETA
, &t
);
6016 send_process (proc
, &t
.c_cc
[VSWTCH
], 1, Qnil
);
6018 #endif /* ! defined (SIGTSTP) */
6020 #else /* ! defined (TCGETA) */
6021 Your configuration files are messed up
.
6022 /* If your system configuration files define SIGNALS_VIA_CHARACTERS,
6023 you'd better be using one of the alternatives above! */
6024 #endif /* ! defined (TCGETA) */
6025 #endif /* ! defined (TIOCGLTC) && defined (TIOCGETC) */
6026 /* In this case, the code above should alway returns. */
6028 #endif /* ! defined HAVE_TERMIOS */
6030 /* The code above may fall through if it can't
6031 handle the signal. */
6032 #endif /* defined (SIGNALS_VIA_CHARACTERS) */
6035 /* Get the current pgrp using the tty itself, if we have that.
6036 Otherwise, use the pty to get the pgrp.
6037 On pfa systems, saka@pfu.fujitsu.co.JP writes:
6038 "TIOCGPGRP symbol defined in sys/ioctl.h at E50.
6039 But, TIOCGPGRP does not work on E50 ;-P works fine on E60"
6040 His patch indicates that if TIOCGPGRP returns an error, then
6041 we should just assume that p->pid is also the process group id. */
6043 gid
= emacs_get_tty_pgrp (p
);
6046 /* If we can't get the information, assume
6047 the shell owns the tty. */
6050 /* It is not clear whether anything really can set GID to -1.
6051 Perhaps on some system one of those ioctls can or could do so.
6052 Or perhaps this is vestigial. */
6055 #else /* ! defined (TIOCGPGRP ) */
6056 /* Can't select pgrps on this system, so we know that
6057 the child itself heads the pgrp. */
6059 #endif /* ! defined (TIOCGPGRP ) */
6061 /* If current_group is lambda, and the shell owns the terminal,
6062 don't send any signal. */
6063 if (EQ (current_group
, Qlambda
) && gid
== p
->pid
)
6071 p
->raw_status_new
= 0;
6073 XSETINT (p
->tick
, ++process_tick
);
6075 status_notify (NULL
);
6077 #endif /* ! defined (SIGCONT) */
6080 send_process (proc
, "\003", 1, Qnil
); /* ^C */
6085 send_process (proc
, "\031", 1, Qnil
); /* ^Y */
6090 sys$
forcex (&(p
->pid
), 0, 1);
6093 flush_pending_output (XINT (p
->infd
));
6097 /* If we don't have process groups, send the signal to the immediate
6098 subprocess. That isn't really right, but it's better than any
6099 obvious alternative. */
6102 kill (p
->pid
, signo
);
6106 /* gid may be a pid, or minus a pgrp's number */
6108 if (!NILP (current_group
))
6110 if (ioctl (XINT (p
->infd
), TIOCSIGSEND
, signo
) == -1)
6111 EMACS_KILLPG (gid
, signo
);
6118 #else /* ! defined (TIOCSIGSEND) */
6119 EMACS_KILLPG (gid
, signo
);
6120 #endif /* ! defined (TIOCSIGSEND) */
6123 DEFUN ("interrupt-process", Finterrupt_process
, Sinterrupt_process
, 0, 2, 0,
6124 doc
: /* Interrupt process PROCESS.
6125 PROCESS may be a process, a buffer, or the name of a process or buffer.
6126 No arg or nil means current buffer's process.
6127 Second arg CURRENT-GROUP non-nil means send signal to
6128 the current process-group of the process's controlling terminal
6129 rather than to the process's own process group.
6130 If the process is a shell, this means interrupt current subjob
6131 rather than the shell.
6133 If CURRENT-GROUP is `lambda', and if the shell owns the terminal,
6134 don't send the signal. */)
6135 (process
, current_group
)
6136 Lisp_Object process
, current_group
;
6138 process_send_signal (process
, SIGINT
, current_group
, 0);
6142 DEFUN ("kill-process", Fkill_process
, Skill_process
, 0, 2, 0,
6143 doc
: /* Kill process PROCESS. May be process or name of one.
6144 See function `interrupt-process' for more details on usage. */)
6145 (process
, current_group
)
6146 Lisp_Object process
, current_group
;
6148 process_send_signal (process
, SIGKILL
, current_group
, 0);
6152 DEFUN ("quit-process", Fquit_process
, Squit_process
, 0, 2, 0,
6153 doc
: /* Send QUIT signal to process PROCESS. May be process or name of one.
6154 See function `interrupt-process' for more details on usage. */)
6155 (process
, current_group
)
6156 Lisp_Object process
, current_group
;
6158 process_send_signal (process
, SIGQUIT
, current_group
, 0);
6162 DEFUN ("stop-process", Fstop_process
, Sstop_process
, 0, 2, 0,
6163 doc
: /* Stop process PROCESS. May be process or name of one.
6164 See function `interrupt-process' for more details on usage.
6165 If PROCESS is a network process, inhibit handling of incoming traffic. */)
6166 (process
, current_group
)
6167 Lisp_Object process
, current_group
;
6170 if (PROCESSP (process
) && NETCONN_P (process
))
6172 struct Lisp_Process
*p
;
6174 p
= XPROCESS (process
);
6175 if (NILP (p
->command
)
6176 && XINT (p
->infd
) >= 0)
6178 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6179 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6186 error ("No SIGTSTP support");
6188 process_send_signal (process
, SIGTSTP
, current_group
, 0);
6193 DEFUN ("continue-process", Fcontinue_process
, Scontinue_process
, 0, 2, 0,
6194 doc
: /* Continue process PROCESS. May be process or name of one.
6195 See function `interrupt-process' for more details on usage.
6196 If PROCESS is a network process, resume handling of incoming traffic. */)
6197 (process
, current_group
)
6198 Lisp_Object process
, current_group
;
6201 if (PROCESSP (process
) && NETCONN_P (process
))
6203 struct Lisp_Process
*p
;
6205 p
= XPROCESS (process
);
6206 if (EQ (p
->command
, Qt
)
6207 && XINT (p
->infd
) >= 0
6208 && (!EQ (p
->filter
, Qt
) || EQ (p
->status
, Qlisten
)))
6210 FD_SET (XINT (p
->infd
), &input_wait_mask
);
6211 FD_SET (XINT (p
->infd
), &non_keyboard_wait_mask
);
6218 process_send_signal (process
, SIGCONT
, current_group
, 0);
6220 error ("No SIGCONT support");
6225 DEFUN ("signal-process", Fsignal_process
, Ssignal_process
,
6226 2, 2, "sProcess (name or number): \nnSignal code: ",
6227 doc
: /* Send PROCESS the signal with code SIGCODE.
6228 PROCESS may also be a number specifying the process id of the
6229 process to signal; in this case, the process need not be a child of
6231 SIGCODE may be an integer, or a symbol whose name is a signal name. */)
6233 Lisp_Object process
, sigcode
;
6237 if (INTEGERP (process
))
6239 pid
= XINT (process
);
6243 if (FLOATP (process
))
6245 pid
= (pid_t
) XFLOAT_DATA (process
);
6249 if (STRINGP (process
))
6252 if (tem
= Fget_process (process
), NILP (tem
))
6254 pid
= XINT (Fstring_to_number (process
, make_number (10)));
6261 process
= get_process (process
);
6266 CHECK_PROCESS (process
);
6267 pid
= XPROCESS (process
)->pid
;
6269 error ("Cannot signal process %s", SDATA (XPROCESS (process
)->name
));
6273 #define parse_signal(NAME, VALUE) \
6274 else if (!xstricmp (name, NAME)) \
6275 XSETINT (sigcode, VALUE)
6277 if (INTEGERP (sigcode
))
6281 unsigned char *name
;
6283 CHECK_SYMBOL (sigcode
);
6284 name
= SDATA (SYMBOL_NAME (sigcode
));
6286 if (!strncmp(name
, "SIG", 3) || !strncmp(name
, "sig", 3))
6292 parse_signal ("usr1", SIGUSR1
);
6295 parse_signal ("usr2", SIGUSR2
);
6298 parse_signal ("term", SIGTERM
);
6301 parse_signal ("hup", SIGHUP
);
6304 parse_signal ("int", SIGINT
);
6307 parse_signal ("quit", SIGQUIT
);
6310 parse_signal ("ill", SIGILL
);
6313 parse_signal ("abrt", SIGABRT
);
6316 parse_signal ("emt", SIGEMT
);
6319 parse_signal ("kill", SIGKILL
);
6322 parse_signal ("fpe", SIGFPE
);
6325 parse_signal ("bus", SIGBUS
);
6328 parse_signal ("segv", SIGSEGV
);
6331 parse_signal ("sys", SIGSYS
);
6334 parse_signal ("pipe", SIGPIPE
);
6337 parse_signal ("alrm", SIGALRM
);
6340 parse_signal ("urg", SIGURG
);
6343 parse_signal ("stop", SIGSTOP
);
6346 parse_signal ("tstp", SIGTSTP
);
6349 parse_signal ("cont", SIGCONT
);
6352 parse_signal ("chld", SIGCHLD
);
6355 parse_signal ("ttin", SIGTTIN
);
6358 parse_signal ("ttou", SIGTTOU
);
6361 parse_signal ("io", SIGIO
);
6364 parse_signal ("xcpu", SIGXCPU
);
6367 parse_signal ("xfsz", SIGXFSZ
);
6370 parse_signal ("vtalrm", SIGVTALRM
);
6373 parse_signal ("prof", SIGPROF
);
6376 parse_signal ("winch", SIGWINCH
);
6379 parse_signal ("info", SIGINFO
);
6382 error ("Undefined signal name %s", name
);
6387 return make_number (kill (pid
, XINT (sigcode
)));
6390 DEFUN ("process-send-eof", Fprocess_send_eof
, Sprocess_send_eof
, 0, 1, 0,
6391 doc
: /* Make PROCESS see end-of-file in its input.
6392 EOF comes after any text already sent to it.
6393 PROCESS may be a process, a buffer, the name of a process or buffer, or
6394 nil, indicating the current buffer's process.
6395 If PROCESS is a network connection, or is a process communicating
6396 through a pipe (as opposed to a pty), then you cannot send any more
6397 text to PROCESS after you call this function. */)
6399 Lisp_Object process
;
6402 struct coding_system
*coding
;
6404 if (DATAGRAM_CONN_P (process
))
6407 proc
= get_process (process
);
6408 coding
= proc_encode_coding_system
[XINT (XPROCESS (proc
)->outfd
)];
6410 /* Make sure the process is really alive. */
6411 if (XPROCESS (proc
)->raw_status_new
)
6412 update_status (XPROCESS (proc
));
6413 if (! EQ (XPROCESS (proc
)->status
, Qrun
))
6414 error ("Process %s not running", SDATA (XPROCESS (proc
)->name
));
6416 if (CODING_REQUIRE_FLUSHING (coding
))
6418 coding
->mode
|= CODING_MODE_LAST_BLOCK
;
6419 send_process (proc
, "", 0, Qnil
);
6423 send_process (proc
, "\032", 1, Qnil
); /* ^z */
6425 if (!NILP (XPROCESS (proc
)->pty_flag
))
6426 send_process (proc
, "\004", 1, Qnil
);
6429 int old_outfd
, new_outfd
;
6431 #ifdef HAVE_SHUTDOWN
6432 /* If this is a network connection, or socketpair is used
6433 for communication with the subprocess, call shutdown to cause EOF.
6434 (In some old system, shutdown to socketpair doesn't work.
6435 Then we just can't win.) */
6436 if (XPROCESS (proc
)->pid
== 0
6437 || XINT (XPROCESS (proc
)->outfd
) == XINT (XPROCESS (proc
)->infd
))
6438 shutdown (XINT (XPROCESS (proc
)->outfd
), 1);
6439 /* In case of socketpair, outfd == infd, so don't close it. */
6440 if (XINT (XPROCESS (proc
)->outfd
) != XINT (XPROCESS (proc
)->infd
))
6441 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6442 #else /* not HAVE_SHUTDOWN */
6443 emacs_close (XINT (XPROCESS (proc
)->outfd
));
6444 #endif /* not HAVE_SHUTDOWN */
6445 new_outfd
= emacs_open (NULL_DEVICE
, O_WRONLY
, 0);
6448 old_outfd
= XINT (XPROCESS (proc
)->outfd
);
6450 if (!proc_encode_coding_system
[new_outfd
])
6451 proc_encode_coding_system
[new_outfd
]
6452 = (struct coding_system
*) xmalloc (sizeof (struct coding_system
));
6453 bcopy (proc_encode_coding_system
[old_outfd
],
6454 proc_encode_coding_system
[new_outfd
],
6455 sizeof (struct coding_system
));
6456 bzero (proc_encode_coding_system
[old_outfd
],
6457 sizeof (struct coding_system
));
6459 XSETINT (XPROCESS (proc
)->outfd
, new_outfd
);
6465 /* Kill all processes associated with `buffer'.
6466 If `buffer' is nil, kill all processes */
6469 kill_buffer_processes (buffer
)
6472 Lisp_Object tail
, proc
;
6474 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6476 proc
= XCDR (XCAR (tail
));
6477 if (GC_PROCESSP (proc
)
6478 && (NILP (buffer
) || EQ (XPROCESS (proc
)->buffer
, buffer
)))
6480 if (NETCONN_P (proc
))
6481 Fdelete_process (proc
);
6482 else if (XINT (XPROCESS (proc
)->infd
) >= 0)
6483 process_send_signal (proc
, SIGHUP
, Qnil
, 1);
6488 /* On receipt of a signal that a child status has changed, loop asking
6489 about children with changed statuses until the system says there
6492 All we do is change the status; we do not run sentinels or print
6493 notifications. That is saved for the next time keyboard input is
6494 done, in order to avoid timing errors.
6496 ** WARNING: this can be called during garbage collection.
6497 Therefore, it must not be fooled by the presence of mark bits in
6500 ** USG WARNING: Although it is not obvious from the documentation
6501 in signal(2), on a USG system the SIGCLD handler MUST NOT call
6502 signal() before executing at least one wait(), otherwise the
6503 handler will be called again, resulting in an infinite loop. The
6504 relevant portion of the documentation reads "SIGCLD signals will be
6505 queued and the signal-catching function will be continually
6506 reentered until the queue is empty". Invoking signal() causes the
6507 kernel to reexamine the SIGCLD queue. Fred Fish, UniSoft Systems
6510 ** Malloc WARNING: This should never call malloc either directly or
6511 indirectly; if it does, that is a bug */
6515 sigchld_handler (signo
)
6518 int old_errno
= errno
;
6520 register struct Lisp_Process
*p
;
6521 extern EMACS_TIME
*input_available_clear_time
;
6523 SIGNAL_THREAD_CHECK (signo
);
6527 sigheld
|= sigbit (SIGCHLD
);
6539 #endif /* no WUNTRACED */
6540 /* Keep trying to get a status until we get a definitive result. */
6544 pid
= wait3 (&w
, WNOHANG
| WUNTRACED
, 0);
6546 while (pid
< 0 && errno
== EINTR
);
6550 /* PID == 0 means no processes found, PID == -1 means a real
6551 failure. We have done all our job, so return. */
6553 /* USG systems forget handlers when they are used;
6554 must reestablish each time */
6555 #if defined (USG) && !defined (POSIX_SIGNALS)
6556 signal (signo
, sigchld_handler
); /* WARNING - must come after wait3() */
6559 sigheld
&= ~sigbit (SIGCHLD
);
6567 #endif /* no WNOHANG */
6569 /* Find the process that signaled us, and record its status. */
6571 /* The process can have been deleted by Fdelete_process. */
6572 for (tail
= deleted_pid_list
; GC_CONSP (tail
); tail
= XCDR (tail
))
6574 Lisp_Object xpid
= XCAR (tail
);
6575 if ((GC_INTEGERP (xpid
) && pid
== (pid_t
) XINT (xpid
))
6576 || (GC_FLOATP (xpid
) && pid
== (pid_t
) XFLOAT_DATA (xpid
)))
6578 XSETCAR (tail
, Qnil
);
6579 goto sigchld_end_of_loop
;
6583 /* Otherwise, if it is asynchronous, it is in Vprocess_alist. */
6585 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6587 proc
= XCDR (XCAR (tail
));
6588 p
= XPROCESS (proc
);
6589 if (GC_EQ (p
->childp
, Qt
) && p
->pid
== pid
)
6594 /* Look for an asynchronous process whose pid hasn't been filled
6597 for (tail
= Vprocess_alist
; GC_CONSP (tail
); tail
= XCDR (tail
))
6599 proc
= XCDR (XCAR (tail
));
6600 p
= XPROCESS (proc
);
6606 /* Change the status of the process that was found. */
6609 union { int i
; WAITTYPE wt
; } u
;
6610 int clear_desc_flag
= 0;
6612 XSETINT (p
->tick
, ++process_tick
);
6614 p
->raw_status
= u
.i
;
6615 p
->raw_status_new
= 1;
6617 /* If process has terminated, stop waiting for its output. */
6618 if ((WIFSIGNALED (w
) || WIFEXITED (w
))
6619 && XINT (p
->infd
) >= 0)
6620 clear_desc_flag
= 1;
6622 /* We use clear_desc_flag to avoid a compiler bug in Microsoft C. */
6623 if (clear_desc_flag
)
6625 FD_CLR (XINT (p
->infd
), &input_wait_mask
);
6626 FD_CLR (XINT (p
->infd
), &non_keyboard_wait_mask
);
6629 /* Tell wait_reading_process_output that it needs to wake up and
6631 if (input_available_clear_time
)
6632 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6635 /* There was no asynchronous process found for that pid: we have
6636 a synchronous process. */
6639 synch_process_alive
= 0;
6641 /* Report the status of the synchronous process. */
6643 synch_process_retcode
= WRETCODE (w
);
6644 else if (WIFSIGNALED (w
))
6645 synch_process_termsig
= WTERMSIG (w
);
6647 /* Tell wait_reading_process_output that it needs to wake up and
6649 if (input_available_clear_time
)
6650 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
6653 sigchld_end_of_loop
:
6656 /* On some systems, we must return right away.
6657 If any more processes want to signal us, we will
6659 Otherwise (on systems that have WNOHANG), loop around
6660 to use up all the processes that have something to tell us. */
6661 #if (defined WINDOWSNT \
6662 || (defined USG && !defined GNU_LINUX \
6663 && !(defined HPUX && defined WNOHANG)))
6664 #if defined (USG) && ! defined (POSIX_SIGNALS)
6665 signal (signo
, sigchld_handler
);
6669 #endif /* USG, but not HPUX with WNOHANG */
6672 #endif /* SIGCHLD */
6676 exec_sentinel_unwind (data
)
6679 XPROCESS (XCAR (data
))->sentinel
= XCDR (data
);
6684 exec_sentinel_error_handler (error
)
6687 cmd_error_internal (error
, "error in process sentinel: ");
6689 update_echo_area ();
6690 Fsleep_for (make_number (2), Qnil
);
6695 exec_sentinel (proc
, reason
)
6696 Lisp_Object proc
, reason
;
6698 Lisp_Object sentinel
, obuffer
, odeactivate
, okeymap
;
6699 register struct Lisp_Process
*p
= XPROCESS (proc
);
6700 int count
= SPECPDL_INDEX ();
6701 int outer_running_asynch_code
= running_asynch_code
;
6702 int waiting
= waiting_for_user_input_p
;
6704 if (inhibit_sentinels
)
6707 /* No need to gcpro these, because all we do with them later
6708 is test them for EQness, and none of them should be a string. */
6709 odeactivate
= Vdeactivate_mark
;
6710 XSETBUFFER (obuffer
, current_buffer
);
6711 okeymap
= current_buffer
->keymap
;
6713 sentinel
= p
->sentinel
;
6714 if (NILP (sentinel
))
6717 /* Zilch the sentinel while it's running, to avoid recursive invocations;
6718 assure that it gets restored no matter how the sentinel exits. */
6720 record_unwind_protect (exec_sentinel_unwind
, Fcons (proc
, sentinel
));
6721 /* Inhibit quit so that random quits don't screw up a running filter. */
6722 specbind (Qinhibit_quit
, Qt
);
6723 specbind (Qlast_nonmenu_event
, Qt
);
6725 /* In case we get recursively called,
6726 and we already saved the match data nonrecursively,
6727 save the same match data in safely recursive fashion. */
6728 if (outer_running_asynch_code
)
6731 tem
= Fmatch_data (Qnil
, Qnil
, Qnil
);
6732 restore_search_regs ();
6733 record_unwind_save_match_data ();
6734 Fset_match_data (tem
, Qt
);
6737 /* For speed, if a search happens within this code,
6738 save the match data in a special nonrecursive fashion. */
6739 running_asynch_code
= 1;
6741 internal_condition_case_1 (read_process_output_call
,
6743 Fcons (proc
, Fcons (reason
, Qnil
))),
6744 !NILP (Vdebug_on_error
) ? Qnil
: Qerror
,
6745 exec_sentinel_error_handler
);
6747 /* If we saved the match data nonrecursively, restore it now. */
6748 restore_search_regs ();
6749 running_asynch_code
= outer_running_asynch_code
;
6751 Vdeactivate_mark
= odeactivate
;
6753 /* Restore waiting_for_user_input_p as it was
6754 when we were called, in case the filter clobbered it. */
6755 waiting_for_user_input_p
= waiting
;
6758 if (! EQ (Fcurrent_buffer (), obuffer
)
6759 || ! EQ (current_buffer
->keymap
, okeymap
))
6761 /* But do it only if the caller is actually going to read events.
6762 Otherwise there's no need to make him wake up, and it could
6763 cause trouble (for example it would make sit_for return). */
6764 if (waiting_for_user_input_p
== -1)
6765 record_asynch_buffer_change ();
6767 unbind_to (count
, Qnil
);
6770 /* Report all recent events of a change in process status
6771 (either run the sentinel or output a message).
6772 This is usually done while Emacs is waiting for keyboard input
6773 but can be done at other times. */
6776 status_notify (deleting_process
)
6777 struct Lisp_Process
*deleting_process
;
6779 register Lisp_Object proc
, buffer
;
6780 Lisp_Object tail
, msg
;
6781 struct gcpro gcpro1
, gcpro2
;
6785 /* We need to gcpro tail; if read_process_output calls a filter
6786 which deletes a process and removes the cons to which tail points
6787 from Vprocess_alist, and then causes a GC, tail is an unprotected
6791 /* Set this now, so that if new processes are created by sentinels
6792 that we run, we get called again to handle their status changes. */
6793 update_tick
= process_tick
;
6795 for (tail
= Vprocess_alist
; !NILP (tail
); tail
= Fcdr (tail
))
6798 register struct Lisp_Process
*p
;
6800 proc
= Fcdr (Fcar (tail
));
6801 p
= XPROCESS (proc
);
6803 if (XINT (p
->tick
) != XINT (p
->update_tick
))
6805 XSETINT (p
->update_tick
, XINT (p
->tick
));
6807 /* If process is still active, read any output that remains. */
6808 while (! EQ (p
->filter
, Qt
)
6809 && ! EQ (p
->status
, Qconnect
)
6810 && ! EQ (p
->status
, Qlisten
)
6811 && ! EQ (p
->command
, Qt
) /* Network process not stopped. */
6812 && XINT (p
->infd
) >= 0
6813 && p
!= deleting_process
6814 && read_process_output (proc
, XINT (p
->infd
)) > 0);
6818 /* Get the text to use for the message. */
6819 if (p
->raw_status_new
)
6821 msg
= status_message (p
);
6823 /* If process is terminated, deactivate it or delete it. */
6825 if (CONSP (p
->status
))
6826 symbol
= XCAR (p
->status
);
6828 if (EQ (symbol
, Qsignal
) || EQ (symbol
, Qexit
)
6829 || EQ (symbol
, Qclosed
))
6831 if (delete_exited_processes
)
6832 remove_process (proc
);
6834 deactivate_process (proc
);
6837 /* The actions above may have further incremented p->tick.
6838 So set p->update_tick again
6839 so that an error in the sentinel will not cause
6840 this code to be run again. */
6841 XSETINT (p
->update_tick
, XINT (p
->tick
));
6842 /* Now output the message suitably. */
6843 if (!NILP (p
->sentinel
))
6844 exec_sentinel (proc
, msg
);
6845 /* Don't bother with a message in the buffer
6846 when a process becomes runnable. */
6847 else if (!EQ (symbol
, Qrun
) && !NILP (buffer
))
6849 Lisp_Object ro
, tem
;
6850 struct buffer
*old
= current_buffer
;
6851 int opoint
, opoint_byte
;
6852 int before
, before_byte
;
6854 ro
= XBUFFER (buffer
)->read_only
;
6856 /* Avoid error if buffer is deleted
6857 (probably that's why the process is dead, too) */
6858 if (NILP (XBUFFER (buffer
)->name
))
6860 Fset_buffer (buffer
);
6863 opoint_byte
= PT_BYTE
;
6864 /* Insert new output into buffer
6865 at the current end-of-output marker,
6866 thus preserving logical ordering of input and output. */
6867 if (XMARKER (p
->mark
)->buffer
)
6868 Fgoto_char (p
->mark
);
6870 SET_PT_BOTH (ZV
, ZV_BYTE
);
6873 before_byte
= PT_BYTE
;
6875 tem
= current_buffer
->read_only
;
6876 current_buffer
->read_only
= Qnil
;
6877 insert_string ("\nProcess ");
6878 Finsert (1, &p
->name
);
6879 insert_string (" ");
6881 current_buffer
->read_only
= tem
;
6882 set_marker_both (p
->mark
, p
->buffer
, PT
, PT_BYTE
);
6884 if (opoint
>= before
)
6885 SET_PT_BOTH (opoint
+ (PT
- before
),
6886 opoint_byte
+ (PT_BYTE
- before_byte
));
6888 SET_PT_BOTH (opoint
, opoint_byte
);
6890 set_buffer_internal (old
);
6895 update_mode_lines
++; /* in case buffers use %s in mode-line-format */
6896 redisplay_preserve_echo_area (13);
6902 DEFUN ("set-process-coding-system", Fset_process_coding_system
,
6903 Sset_process_coding_system
, 1, 3, 0,
6904 doc
: /* Set coding systems of PROCESS to DECODING and ENCODING.
6905 DECODING will be used to decode subprocess output and ENCODING to
6906 encode subprocess input. */)
6907 (process
, decoding
, encoding
)
6908 register Lisp_Object process
, decoding
, encoding
;
6910 register struct Lisp_Process
*p
;
6912 CHECK_PROCESS (process
);
6913 p
= XPROCESS (process
);
6914 if (XINT (p
->infd
) < 0)
6915 error ("Input file descriptor of %s closed", SDATA (p
->name
));
6916 if (XINT (p
->outfd
) < 0)
6917 error ("Output file descriptor of %s closed", SDATA (p
->name
));
6918 Fcheck_coding_system (decoding
);
6919 Fcheck_coding_system (encoding
);
6921 p
->decode_coding_system
= decoding
;
6922 p
->encode_coding_system
= encoding
;
6923 setup_process_coding_systems (process
);
6928 DEFUN ("process-coding-system",
6929 Fprocess_coding_system
, Sprocess_coding_system
, 1, 1, 0,
6930 doc
: /* Return a cons of coding systems for decoding and encoding of PROCESS. */)
6932 register Lisp_Object process
;
6934 CHECK_PROCESS (process
);
6935 return Fcons (XPROCESS (process
)->decode_coding_system
,
6936 XPROCESS (process
)->encode_coding_system
);
6939 DEFUN ("set-process-filter-multibyte", Fset_process_filter_multibyte
,
6940 Sset_process_filter_multibyte
, 2, 2, 0,
6941 doc
: /* Set multibyteness of the strings given to PROCESS's filter.
6942 If FLAG is non-nil, the filter is given multibyte strings.
6943 If FLAG is nil, the filter is given unibyte strings. In this case,
6944 all character code conversion except for end-of-line conversion is
6947 Lisp_Object process
, flag
;
6949 register struct Lisp_Process
*p
;
6951 CHECK_PROCESS (process
);
6952 p
= XPROCESS (process
);
6953 p
->filter_multibyte
= flag
;
6954 setup_process_coding_systems (process
);
6959 DEFUN ("process-filter-multibyte-p", Fprocess_filter_multibyte_p
,
6960 Sprocess_filter_multibyte_p
, 1, 1, 0,
6961 doc
: /* Return t if a multibyte string is given to PROCESS's filter.*/)
6963 Lisp_Object process
;
6965 register struct Lisp_Process
*p
;
6967 CHECK_PROCESS (process
);
6968 p
= XPROCESS (process
);
6970 return (NILP (p
->filter_multibyte
) ? Qnil
: Qt
);
6975 /* Add DESC to the set of keyboard input descriptors. */
6978 add_keyboard_wait_descriptor (desc
)
6981 FD_SET (desc
, &input_wait_mask
);
6982 FD_SET (desc
, &non_process_wait_mask
);
6983 if (desc
> max_keyboard_desc
)
6984 max_keyboard_desc
= desc
;
6987 static int add_gpm_wait_descriptor_called_flag
;
6990 add_gpm_wait_descriptor (desc
)
6993 if (! add_gpm_wait_descriptor_called_flag
)
6994 FD_CLR (0, &input_wait_mask
);
6995 add_gpm_wait_descriptor_called_flag
= 1;
6996 FD_SET (desc
, &input_wait_mask
);
6997 FD_SET (desc
, &gpm_wait_mask
);
6998 if (desc
> max_gpm_desc
)
6999 max_gpm_desc
= desc
;
7002 /* From now on, do not expect DESC to give keyboard input. */
7005 delete_keyboard_wait_descriptor (desc
)
7009 int lim
= max_keyboard_desc
;
7011 FD_CLR (desc
, &input_wait_mask
);
7012 FD_CLR (desc
, &non_process_wait_mask
);
7014 if (desc
== max_keyboard_desc
)
7015 for (fd
= 0; fd
< lim
; fd
++)
7016 if (FD_ISSET (fd
, &input_wait_mask
)
7017 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7018 && !FD_ISSET (fd
, &gpm_wait_mask
))
7019 max_keyboard_desc
= fd
;
7023 delete_gpm_wait_descriptor (desc
)
7027 int lim
= max_gpm_desc
;
7029 FD_CLR (desc
, &input_wait_mask
);
7030 FD_CLR (desc
, &non_process_wait_mask
);
7032 if (desc
== max_gpm_desc
)
7033 for (fd
= 0; fd
< lim
; fd
++)
7034 if (FD_ISSET (fd
, &input_wait_mask
)
7035 && !FD_ISSET (fd
, &non_keyboard_wait_mask
)
7036 && !FD_ISSET (fd
, &non_process_wait_mask
))
7040 /* Return nonzero if *MASK has a bit set
7041 that corresponds to one of the keyboard input descriptors. */
7044 keyboard_bit_set (mask
)
7049 for (fd
= 0; fd
<= max_keyboard_desc
; fd
++)
7050 if (FD_ISSET (fd
, mask
) && FD_ISSET (fd
, &input_wait_mask
)
7051 && !FD_ISSET (fd
, &non_keyboard_wait_mask
))
7062 inhibit_sentinels
= 0;
7066 if (! noninteractive
|| initialized
)
7068 signal (SIGCHLD
, sigchld_handler
);
7071 FD_ZERO (&input_wait_mask
);
7072 FD_ZERO (&non_keyboard_wait_mask
);
7073 FD_ZERO (&non_process_wait_mask
);
7074 max_process_desc
= 0;
7076 #ifdef NON_BLOCKING_CONNECT
7077 FD_ZERO (&connect_wait_mask
);
7078 num_pending_connects
= 0;
7081 #ifdef ADAPTIVE_READ_BUFFERING
7082 process_output_delay_count
= 0;
7083 process_output_skip
= 0;
7086 /* Don't do this, it caused infinite select loops. The display
7087 method should call add_keyboard_wait_descriptor on stdin if it
7090 FD_SET (0, &input_wait_mask
);
7093 Vprocess_alist
= Qnil
;
7095 deleted_pid_list
= Qnil
;
7097 for (i
= 0; i
< MAXDESC
; i
++)
7099 chan_process
[i
] = Qnil
;
7100 proc_buffered_char
[i
] = -1;
7102 bzero (proc_decode_coding_system
, sizeof proc_decode_coding_system
);
7103 bzero (proc_encode_coding_system
, sizeof proc_encode_coding_system
);
7104 #ifdef DATAGRAM_SOCKETS
7105 bzero (datagram_address
, sizeof datagram_address
);
7110 Lisp_Object subfeatures
= Qnil
;
7111 struct socket_options
*sopt
;
7113 #define ADD_SUBFEATURE(key, val) \
7114 subfeatures = Fcons (Fcons (key, Fcons (val, Qnil)), subfeatures)
7116 #ifdef NON_BLOCKING_CONNECT
7117 ADD_SUBFEATURE (QCnowait
, Qt
);
7119 #ifdef DATAGRAM_SOCKETS
7120 ADD_SUBFEATURE (QCtype
, Qdatagram
);
7122 #ifdef HAVE_LOCAL_SOCKETS
7123 ADD_SUBFEATURE (QCfamily
, Qlocal
);
7125 ADD_SUBFEATURE (QCfamily
, Qipv4
);
7127 ADD_SUBFEATURE (QCfamily
, Qipv6
);
7129 #ifdef HAVE_GETSOCKNAME
7130 ADD_SUBFEATURE (QCservice
, Qt
);
7132 #if !defined(TERM) && (defined(O_NONBLOCK) || defined(O_NDELAY))
7133 ADD_SUBFEATURE (QCserver
, Qt
);
7136 for (sopt
= socket_options
; sopt
->name
; sopt
++)
7137 subfeatures
= Fcons (intern (sopt
->name
), subfeatures
);
7139 Fprovide (intern ("make-network-process"), subfeatures
);
7141 #endif /* HAVE_SOCKETS */
7143 #if defined (DARWIN) || defined (MAC_OSX)
7144 /* PTYs are broken on Darwin < 6, but are sometimes useful for interactive
7145 processes. As such, we only change the default value. */
7148 char *release
= get_operating_system_release();
7149 if (!release
|| !release
[0] || (release
[0] < MIN_PTY_KERNEL_VERSION
7150 && release
[1] == '.')) {
7151 Vprocess_connection_type
= Qnil
;
7160 Qprocessp
= intern ("processp");
7161 staticpro (&Qprocessp
);
7162 Qrun
= intern ("run");
7164 Qstop
= intern ("stop");
7166 Qsignal
= intern ("signal");
7167 staticpro (&Qsignal
);
7169 /* Qexit is already staticpro'd by syms_of_eval; don't staticpro it
7172 Qexit = intern ("exit");
7173 staticpro (&Qexit); */
7175 Qopen
= intern ("open");
7177 Qclosed
= intern ("closed");
7178 staticpro (&Qclosed
);
7179 Qconnect
= intern ("connect");
7180 staticpro (&Qconnect
);
7181 Qfailed
= intern ("failed");
7182 staticpro (&Qfailed
);
7183 Qlisten
= intern ("listen");
7184 staticpro (&Qlisten
);
7185 Qlocal
= intern ("local");
7186 staticpro (&Qlocal
);
7187 Qipv4
= intern ("ipv4");
7190 Qipv6
= intern ("ipv6");
7193 Qdatagram
= intern ("datagram");
7194 staticpro (&Qdatagram
);
7196 QCname
= intern (":name");
7197 staticpro (&QCname
);
7198 QCbuffer
= intern (":buffer");
7199 staticpro (&QCbuffer
);
7200 QChost
= intern (":host");
7201 staticpro (&QChost
);
7202 QCservice
= intern (":service");
7203 staticpro (&QCservice
);
7204 QCtype
= intern (":type");
7205 staticpro (&QCtype
);
7206 QClocal
= intern (":local");
7207 staticpro (&QClocal
);
7208 QCremote
= intern (":remote");
7209 staticpro (&QCremote
);
7210 QCcoding
= intern (":coding");
7211 staticpro (&QCcoding
);
7212 QCserver
= intern (":server");
7213 staticpro (&QCserver
);
7214 QCnowait
= intern (":nowait");
7215 staticpro (&QCnowait
);
7216 QCsentinel
= intern (":sentinel");
7217 staticpro (&QCsentinel
);
7218 QClog
= intern (":log");
7220 QCnoquery
= intern (":noquery");
7221 staticpro (&QCnoquery
);
7222 QCstop
= intern (":stop");
7223 staticpro (&QCstop
);
7224 QCoptions
= intern (":options");
7225 staticpro (&QCoptions
);
7226 QCplist
= intern (":plist");
7227 staticpro (&QCplist
);
7228 QCfilter_multibyte
= intern (":filter-multibyte");
7229 staticpro (&QCfilter_multibyte
);
7231 Qlast_nonmenu_event
= intern ("last-nonmenu-event");
7232 staticpro (&Qlast_nonmenu_event
);
7234 staticpro (&Vprocess_alist
);
7236 staticpro (&deleted_pid_list
);
7239 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
7240 doc
: /* *Non-nil means delete processes immediately when they exit.
7241 A value of nil means don't delete them until `list-processes' is run. */);
7243 delete_exited_processes
= 1;
7245 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type
,
7246 doc
: /* Control type of device used to communicate with subprocesses.
7247 Values are nil to use a pipe, or t or `pty' to use a pty.
7248 The value has no effect if the system has no ptys or if all ptys are busy:
7249 then a pipe is used in any case.
7250 The value takes effect when `start-process' is called. */);
7251 Vprocess_connection_type
= Qt
;
7253 #ifdef ADAPTIVE_READ_BUFFERING
7254 DEFVAR_LISP ("process-adaptive-read-buffering", &Vprocess_adaptive_read_buffering
,
7255 doc
: /* If non-nil, improve receive buffering by delaying after short reads.
7256 On some systems, when Emacs reads the output from a subprocess, the output data
7257 is read in very small blocks, potentially resulting in very poor performance.
7258 This behavior can be remedied to some extent by setting this variable to a
7259 non-nil value, as it will automatically delay reading from such processes, to
7260 allow them to produce more output before Emacs tries to read it.
7261 If the value is t, the delay is reset after each write to the process; any other
7262 non-nil value means that the delay is not reset on write.
7263 The variable takes effect when `start-process' is called. */);
7264 Vprocess_adaptive_read_buffering
= Qt
;
7267 defsubr (&Sprocessp
);
7268 defsubr (&Sget_process
);
7269 defsubr (&Sget_buffer_process
);
7270 defsubr (&Sdelete_process
);
7271 defsubr (&Sprocess_status
);
7272 defsubr (&Sprocess_exit_status
);
7273 defsubr (&Sprocess_id
);
7274 defsubr (&Sprocess_name
);
7275 defsubr (&Sprocess_tty_name
);
7276 defsubr (&Sprocess_command
);
7277 defsubr (&Sset_process_buffer
);
7278 defsubr (&Sprocess_buffer
);
7279 defsubr (&Sprocess_mark
);
7280 defsubr (&Sset_process_filter
);
7281 defsubr (&Sprocess_filter
);
7282 defsubr (&Sset_process_sentinel
);
7283 defsubr (&Sprocess_sentinel
);
7284 defsubr (&Sset_process_window_size
);
7285 defsubr (&Sset_process_inherit_coding_system_flag
);
7286 defsubr (&Sprocess_inherit_coding_system_flag
);
7287 defsubr (&Sset_process_query_on_exit_flag
);
7288 defsubr (&Sprocess_query_on_exit_flag
);
7289 defsubr (&Sprocess_contact
);
7290 defsubr (&Sprocess_plist
);
7291 defsubr (&Sset_process_plist
);
7292 defsubr (&Slist_processes
);
7293 defsubr (&Sprocess_list
);
7294 defsubr (&Sstart_process
);
7296 defsubr (&Sset_network_process_option
);
7297 defsubr (&Smake_network_process
);
7298 defsubr (&Sformat_network_address
);
7299 #endif /* HAVE_SOCKETS */
7300 #if defined(HAVE_SOCKETS) && defined(HAVE_NET_IF_H) && defined(HAVE_SYS_IOCTL_H)
7302 defsubr (&Snetwork_interface_list
);
7304 #if defined(SIOCGIFADDR) || defined(SIOCGIFHWADDR) || defined(SIOCGIFFLAGS)
7305 defsubr (&Snetwork_interface_info
);
7307 #endif /* HAVE_SOCKETS ... */
7308 #ifdef DATAGRAM_SOCKETS
7309 defsubr (&Sprocess_datagram_address
);
7310 defsubr (&Sset_process_datagram_address
);
7312 defsubr (&Saccept_process_output
);
7313 defsubr (&Sprocess_send_region
);
7314 defsubr (&Sprocess_send_string
);
7315 defsubr (&Sinterrupt_process
);
7316 defsubr (&Skill_process
);
7317 defsubr (&Squit_process
);
7318 defsubr (&Sstop_process
);
7319 defsubr (&Scontinue_process
);
7320 defsubr (&Sprocess_running_child_p
);
7321 defsubr (&Sprocess_send_eof
);
7322 defsubr (&Ssignal_process
);
7323 defsubr (&Swaiting_for_user_input_p
);
7324 /* defsubr (&Sprocess_connection); */
7325 defsubr (&Sset_process_coding_system
);
7326 defsubr (&Sprocess_coding_system
);
7327 defsubr (&Sset_process_filter_multibyte
);
7328 defsubr (&Sprocess_filter_multibyte_p
);
7332 #else /* not subprocesses */
7334 #include <sys/types.h>
7338 #include "systime.h"
7339 #include "charset.h"
7341 #include "termopts.h"
7342 #include "sysselect.h"
7344 extern int frame_garbaged
;
7346 extern EMACS_TIME
timer_check ();
7347 extern int timers_run
;
7351 /* As described above, except assuming that there are no subprocesses:
7353 Wait for timeout to elapse and/or keyboard input to be available.
7356 timeout in seconds, or
7357 zero for no limit, or
7358 -1 means gobble data immediately available but don't wait for any.
7360 read_kbd is a Lisp_Object:
7361 0 to ignore keyboard input, or
7362 1 to return when input is available, or
7363 -1 means caller will actually read the input, so don't throw to
7366 see full version for other parameters. We know that wait_proc will
7367 always be NULL, since `subprocesses' isn't defined.
7369 do_display != 0 means redisplay should be done to show subprocess
7370 output that arrives.
7372 Return true iff we received input from any process. */
7375 wait_reading_process_output (time_limit
, microsecs
, read_kbd
, do_display
,
7376 wait_for_cell
, wait_proc
, just_wait_proc
)
7377 int time_limit
, microsecs
, read_kbd
, do_display
;
7378 Lisp_Object wait_for_cell
;
7379 struct Lisp_Process
*wait_proc
;
7383 EMACS_TIME end_time
, timeout
;
7384 SELECT_TYPE waitchannels
;
7387 /* What does time_limit really mean? */
7388 if (time_limit
|| microsecs
)
7390 EMACS_GET_TIME (end_time
);
7391 EMACS_SET_SECS_USECS (timeout
, time_limit
, microsecs
);
7392 EMACS_ADD_TIME (end_time
, end_time
, timeout
);
7395 /* Turn off periodic alarms (in case they are in use)
7396 and then turn off any other atimers,
7397 because the select emulator uses alarms. */
7399 turn_on_atimers (0);
7403 int timeout_reduced_for_timers
= 0;
7405 /* If calling from keyboard input, do not quit
7406 since we want to return C-g as an input character.
7407 Otherwise, do pending quit if requested. */
7411 /* Exit now if the cell we're waiting for became non-nil. */
7412 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7415 /* Compute time from now till when time limit is up */
7416 /* Exit if already run out */
7417 if (time_limit
== -1)
7419 /* -1 specified for timeout means
7420 gobble output available now
7421 but don't wait at all. */
7423 EMACS_SET_SECS_USECS (timeout
, 0, 0);
7425 else if (time_limit
|| microsecs
)
7427 EMACS_GET_TIME (timeout
);
7428 EMACS_SUB_TIME (timeout
, end_time
, timeout
);
7429 if (EMACS_TIME_NEG_P (timeout
))
7434 EMACS_SET_SECS_USECS (timeout
, 100000, 0);
7437 /* If our caller will not immediately handle keyboard events,
7438 run timer events directly.
7439 (Callers that will immediately read keyboard events
7440 call timer_delay on their own.) */
7441 if (NILP (wait_for_cell
))
7443 EMACS_TIME timer_delay
;
7447 int old_timers_run
= timers_run
;
7448 timer_delay
= timer_check (1);
7449 if (timers_run
!= old_timers_run
&& do_display
)
7450 /* We must retry, since a timer may have requeued itself
7451 and that could alter the time delay. */
7452 redisplay_preserve_echo_area (14);
7456 while (!detect_input_pending ());
7458 /* If there is unread keyboard input, also return. */
7460 && requeued_events_pending_p ())
7463 if (! EMACS_TIME_NEG_P (timer_delay
) && time_limit
!= -1)
7465 EMACS_TIME difference
;
7466 EMACS_SUB_TIME (difference
, timer_delay
, timeout
);
7467 if (EMACS_TIME_NEG_P (difference
))
7469 timeout
= timer_delay
;
7470 timeout_reduced_for_timers
= 1;
7475 /* Cause C-g and alarm signals to take immediate action,
7476 and cause input available signals to zero out timeout. */
7478 set_waiting_for_input (&timeout
);
7480 /* Wait till there is something to do. */
7482 if (! read_kbd
&& NILP (wait_for_cell
))
7483 FD_ZERO (&waitchannels
);
7485 FD_SET (0, &waitchannels
);
7487 /* If a frame has been newly mapped and needs updating,
7488 reprocess its display stuff. */
7489 if (frame_garbaged
&& do_display
)
7491 clear_waiting_for_input ();
7492 redisplay_preserve_echo_area (15);
7494 set_waiting_for_input (&timeout
);
7497 if (read_kbd
&& detect_input_pending ())
7500 FD_ZERO (&waitchannels
);
7503 nfds
= select (1, &waitchannels
, (SELECT_TYPE
*)0, (SELECT_TYPE
*)0,
7508 /* Make C-g and alarm signals set flags again */
7509 clear_waiting_for_input ();
7511 /* If we woke up due to SIGWINCH, actually change size now. */
7512 do_pending_window_change (0);
7514 if (time_limit
&& nfds
== 0 && ! timeout_reduced_for_timers
)
7515 /* We waited the full specified time, so return now. */
7520 /* If the system call was interrupted, then go around the
7522 if (xerrno
== EINTR
)
7523 FD_ZERO (&waitchannels
);
7525 error ("select error: %s", emacs_strerror (xerrno
));
7528 else if (nfds
> 0 && (waitchannels
& 1) && interrupt_input
)
7529 /* System sometimes fails to deliver SIGIO. */
7530 kill (getpid (), SIGIO
);
7533 if (read_kbd
&& interrupt_input
&& (waitchannels
& 1))
7534 kill (getpid (), SIGIO
);
7537 /* Check for keyboard input */
7540 && detect_input_pending_run_timers (do_display
))
7542 swallow_events (do_display
);
7543 if (detect_input_pending_run_timers (do_display
))
7547 /* If there is unread keyboard input, also return. */
7549 && requeued_events_pending_p ())
7552 /* If wait_for_cell. check for keyboard input
7553 but don't run any timers.
7554 ??? (It seems wrong to me to check for keyboard
7555 input at all when wait_for_cell, but the code
7556 has been this way since July 1994.
7557 Try changing this after version 19.31.) */
7558 if (! NILP (wait_for_cell
)
7559 && detect_input_pending ())
7561 swallow_events (do_display
);
7562 if (detect_input_pending ())
7566 /* Exit now if the cell we're waiting for became non-nil. */
7567 if (! NILP (wait_for_cell
) && ! NILP (XCAR (wait_for_cell
)))
7577 /* Don't confuse make-docfile by having two doc strings for this function.
7578 make-docfile does not pay attention to #if, for good reason! */
7579 DEFUN ("get-buffer-process", Fget_buffer_process
, Sget_buffer_process
, 1, 1, 0,
7582 register Lisp_Object name
;
7587 /* Don't confuse make-docfile by having two doc strings for this function.
7588 make-docfile does not pay attention to #if, for good reason! */
7589 DEFUN ("process-inherit-coding-system-flag",
7590 Fprocess_inherit_coding_system_flag
, Sprocess_inherit_coding_system_flag
,
7594 register Lisp_Object process
;
7596 /* Ignore the argument and return the value of
7597 inherit-process-coding-system. */
7598 return inherit_process_coding_system
? Qt
: Qnil
;
7601 /* Kill all processes associated with `buffer'.
7602 If `buffer' is nil, kill all processes.
7603 Since we have no subprocesses, this does nothing. */
7606 kill_buffer_processes (buffer
)
7619 QCtype
= intern (":type");
7620 staticpro (&QCtype
);
7622 defsubr (&Sget_buffer_process
);
7623 defsubr (&Sprocess_inherit_coding_system_flag
);
7627 #endif /* not subprocesses */
7629 /* arch-tag: 3706c011-7b9a-4117-bd4f-59e7f701a4c4
7630 (do not change this comment) */