1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2014 Free Software
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
27 #endif /* HAVE_PWD_H */
35 #include "sysselect.h"
36 #include "blockinput.h"
38 #if defined DARWIN_OS || defined __FreeBSD__
39 # include <sys/sysctl.h>
43 /* Sparc/ARM machine/frame.h has 'struct frame' which conflicts with Emacs's
44 'struct frame', so rename it. */
45 # define frame freebsd_frame
46 # include <sys/user.h>
49 # include <sys/resource.h>
55 #define write sys_write
57 #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE))
60 #endif /* not WINDOWSNT */
62 #include <sys/types.h>
66 /* Get SI_SRPC_DOMAIN, if it is available. */
67 #ifdef HAVE_SYS_SYSTEMINFO_H
68 #include <sys/systeminfo.h>
71 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
75 #include <sys/param.h>
82 #ifdef HAVE_SYS_UTSNAME_H
83 #include <sys/utsname.h>
85 #endif /* HAVE_SYS_UTSNAME_H */
90 #include "termhooks.h"
93 #include "dispextern.h"
95 #include "cm.h" /* for reset_sys_modes */
99 /* In process.h which conflicts with the local copy. */
101 int _cdecl
_spawnlp (int, const char *, const char *, ...);
102 int _cdecl
_getpid (void);
105 #include "syssignal.h"
108 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
110 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
113 /* Declare here, including term.h is problematic on some systems. */
114 extern void tputs (const char *, int, int (*)(int));
116 static const int baud_convert
[] =
118 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
119 1800, 2400, 4800, 9600, 19200, 38400
123 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
125 /* Return the current working directory. Returns NULL on errors.
126 Any other returned value must be freed with free. This is used
127 only when get_current_dir_name is not defined on the system. */
129 get_current_dir_name (void)
132 char *pwd
= getenv ("PWD");
133 struct stat dotstat
, pwdstat
;
134 /* If PWD is accurate, use it instead of calling getcwd. PWD is
135 sometimes a nicer name, and using it may avoid a fatal error if a
136 parent directory is searchable but not readable. */
138 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
139 && stat (pwd
, &pwdstat
) == 0
140 && stat (".", &dotstat
) == 0
141 && dotstat
.st_ino
== pwdstat
.st_ino
142 && dotstat
.st_dev
== pwdstat
.st_dev
144 && strlen (pwd
) < MAXPATHLEN
148 buf
= malloc (strlen (pwd
) + 1);
155 size_t buf_size
= 1024;
156 buf
= malloc (buf_size
);
161 if (getcwd (buf
, buf_size
) == buf
)
165 int tmp_errno
= errno
;
171 buf
= realloc (buf
, buf_size
);
181 /* Discard pending input on all input descriptors. */
184 discard_tty_input (void)
187 struct emacs_tty buf
;
192 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
193 while (dos_keyread () != -1)
195 #else /* not MSDOS */
197 struct tty_display_info
*tty
;
198 for (tty
= tty_list
; tty
; tty
= tty
->next
)
200 if (tty
->input
) /* Is the device suspended? */
202 emacs_get_tty (fileno (tty
->input
), &buf
);
203 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
207 #endif /* not MSDOS */
208 #endif /* not WINDOWSNT */
214 /* Arrange for character C to be read as the next input from
216 XXX What if we have multiple ttys?
222 if (! (FRAMEP (selected_frame
)
223 && FRAME_LIVE_P (XFRAME (selected_frame
))
224 && FRAME_TERMCAP_P (XFRAME (selected_frame
))))
227 /* Should perhaps error if in batch mode */
229 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
230 #else /* no TIOCSTI */
231 error ("Cannot stuff terminal input characters in this version of Unix");
232 #endif /* no TIOCSTI */
238 init_baud_rate (int fd
)
248 #else /* not DOS_NT */
253 emacs_ospeed
= cfgetospeed (&sg
);
254 #endif /* not DOS_NT */
257 baud_rate
= (emacs_ospeed
< ARRAYELTS (baud_convert
)
258 ? baud_convert
[emacs_ospeed
] : 9600);
267 /* Wait for the subprocess with process id CHILD to terminate or change status.
268 CHILD must be a child process that has not been reaped.
269 If STATUS is non-null, store the waitpid-style exit status into *STATUS
270 and tell wait_reading_process_output that it needs to look around.
271 Use waitpid-style OPTIONS when waiting.
272 If INTERRUPTIBLE, this function is interruptible by a signal.
274 Return CHILD if successful, 0 if no status is available;
275 the latter is possible only when options & NOHANG. */
277 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
281 /* Invoke waitpid only with a known process ID; do not invoke
282 waitpid with a nonpositive argument. Otherwise, Emacs might
283 reap an unwanted process by mistake. For example, invoking
284 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
285 so that another thread running glib won't find them. */
288 while ((pid
= waitpid (child
, status
, options
)) < 0)
290 /* Check that CHILD is a child process that has not been reaped,
291 and that STATUS and OPTIONS are valid. Otherwise abort,
292 as continuing after this internal error could cause Emacs to
293 become confused and kill innocent-victim processes. */
297 /* Note: the MS-Windows emulation of waitpid calls QUIT
303 /* If successful and status is requested, tell wait_reading_process_output
304 that it needs to wake up and look around. */
305 if (pid
&& status
&& input_available_clear_time
)
306 *input_available_clear_time
= make_timespec (0, 0);
311 /* Wait for the subprocess with process id CHILD to terminate.
312 CHILD must be a child process that has not been reaped.
313 If STATUS is non-null, store the waitpid-style exit status into *STATUS
314 and tell wait_reading_process_output that it needs to look around.
315 If INTERRUPTIBLE, this function is interruptible by a signal. */
317 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
319 get_child_status (child
, status
, 0, interruptible
);
322 /* Report whether the subprocess with process id CHILD has changed status.
323 Termination counts as a change of status.
324 CHILD must be a child process that has not been reaped.
325 If STATUS is non-null, store the waitpid-style exit status into *STATUS
326 and tell wait_reading_process_output that it needs to look around.
327 Use waitpid-style OPTIONS to check status, but do not wait.
329 Return CHILD if successful, 0 if no status is available because
330 the process's state has not changed. */
332 child_status_changed (pid_t child
, int *status
, int options
)
334 return get_child_status (child
, status
, WNOHANG
| options
, 0);
338 /* Set up the terminal at the other end of a pseudo-terminal that
339 we will be controlling an inferior through.
340 It should not echo or do line-editing, since that is done
341 in Emacs. No padding needed for insertion into an Emacs buffer. */
344 child_setup_tty (int out
)
349 emacs_get_tty (out
, &s
);
350 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
351 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
353 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
354 Some versions of GNU Hurd do not have FFDLY? */
356 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
357 /* No output delays */
359 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
360 /* No output delays */
363 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
364 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
366 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
369 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
372 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
374 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
375 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
376 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
377 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
380 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
383 #ifdef SIGNALS_VIA_CHARACTERS
384 /* the QUIT and INTR character are used in process_send_signal
385 so set them here to something useful. */
386 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
387 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
388 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
389 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
390 #endif /* not SIGNALS_VIA_CHARACTERS */
393 /* Also, PTY overloads NUL and BREAK.
394 don't ignore break, but don't signal either, so it looks like NUL. */
395 s
.main
.c_iflag
&= ~IGNBRK
;
396 s
.main
.c_iflag
&= ~BRKINT
;
397 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
398 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
399 would force it to 0377. That looks like duplicated code. */
400 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
403 /* We originally enabled ICANON (and set VEOF to 04), and then had
404 process.c send additional EOF chars to flush the output when faced
405 with long lines, but this leads to weird effects when the
406 subprocess has disabled ICANON and ends up seeing those spurious
407 extra EOFs. So we don't send EOFs any more in
408 process.c:send_process. First we tried to disable ICANON by
409 default, so if a subsprocess sets up ICANON, it's his problem (or
410 the Elisp package that talks to it) to deal with lines that are
411 too long. But this disables some features, such as the ability
412 to send EOF signals. So we re-enabled ICANON but there is no
413 more "send eof to flush" going on (which is wrong and unportable
414 in itself). The correct way to handle too much output is to
415 buffer what could not be written and then write it again when
416 select returns ok for writing. This has it own set of
417 problems. Write is now asynchronous, is that a problem? How much
418 do we buffer, and what do we do when that limit is reached? */
420 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
421 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
422 #if 0 /* These settings only apply to non-ICANON mode. */
423 s
.main
.c_cc
[VMIN
] = 1;
424 s
.main
.c_cc
[VTIME
] = 0;
427 emacs_set_tty (out
, &s
, 0);
428 #endif /* not WINDOWSNT */
430 #endif /* not MSDOS */
433 /* Record a signal code and the action for it. */
437 struct sigaction action
;
440 static void save_signal_handlers (struct save_signal
*);
441 static void restore_signal_handlers (struct save_signal
*);
443 /* Suspend the Emacs process; give terminal to its superior. */
451 /* On a system where suspending is not implemented,
452 instead fork a subshell and let it talk directly to the terminal
459 /* Fork a subshell. */
464 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
467 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
469 char oldwd
[MAX_UTF8_PATH
];
474 struct save_signal saved_handlers
[5];
475 char *str
= SSDATA (encode_current_directory ());
481 char *volatile str_volatile
= str
;
488 error ("Can't spawn subshell");
490 saved_handlers
[0].code
= SIGINT
;
491 saved_handlers
[1].code
= SIGQUIT
;
492 saved_handlers
[2].code
= SIGTERM
;
494 saved_handlers
[3].code
= SIGIO
;
495 saved_handlers
[4].code
= 0;
497 saved_handlers
[3].code
= 0;
501 save_signal_handlers (saved_handlers
);
508 #ifdef DOS_NT /* MW, Aug 1993 */
509 getcwd (oldwd
, sizeof oldwd
);
511 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
514 sh
= egetenv ("SHELL");
518 /* Use our buffer's default directory for the subshell. */
519 if (chdir (str
) != 0)
523 _exit (EXIT_CANCELED
);
527 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
529 char *epwd
= getenv ("PWD");
530 char old_pwd
[MAXPATHLEN
+1+4];
532 /* If PWD is set, pass it with corrected value. */
535 strcpy (old_pwd
, epwd
);
536 setenv ("PWD", str
, 1);
539 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
541 putenv (old_pwd
); /* restore previous value */
543 #else /* not MSDOS */
545 /* Waits for process completion */
546 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
547 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
549 write (1, "Can't execute subshell", 22);
550 #else /* not WINDOWSNT */
551 execlp (sh
, sh
, (char *) 0);
553 _exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
554 #endif /* not WINDOWSNT */
555 #endif /* not MSDOS */
558 /* Do this now if we did not do it before. */
560 save_signal_handlers (saved_handlers
);
564 wait_for_termination (pid
, &status
, 0);
566 restore_signal_handlers (saved_handlers
);
570 save_signal_handlers (struct save_signal
*saved_handlers
)
572 while (saved_handlers
->code
)
574 struct sigaction action
;
575 emacs_sigaction_init (&action
, SIG_IGN
);
576 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
582 restore_signal_handlers (struct save_signal
*saved_handlers
)
584 while (saved_handlers
->code
)
586 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
592 static int old_fcntl_flags
[FD_SETSIZE
];
599 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
600 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
601 interrupts_deferred
= 0;
610 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
624 sigemptyset (&unblocked
);
626 sigaddset (&unblocked
, SIGWINCH
);
628 sigaddset (&unblocked
, SIGIO
);
629 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
631 interrupts_deferred
= 0;
636 unrequest_sigio (void)
644 sigemptyset (&blocked
);
646 sigaddset (&blocked
, SIGWINCH
);
648 sigaddset (&blocked
, SIGIO
);
649 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
650 interrupts_deferred
= 1;
658 signal (SIGIO
, SIG_IGN
);
666 block_child_signal (sigset_t
*oldset
)
669 sigemptyset (&blocked
);
670 sigaddset (&blocked
, SIGCHLD
);
671 sigaddset (&blocked
, SIGINT
);
672 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
675 /* Unblock SIGCHLD. */
678 unblock_child_signal (sigset_t
const *oldset
)
680 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
685 /* Saving and restoring the process group of Emacs's terminal. */
687 /* The process group of which Emacs was a member when it initially
690 If Emacs was in its own process group (i.e. inherited_pgroup ==
691 getpid ()), then we know we're running under a shell with job
692 control (Emacs would never be run as part of a pipeline).
695 If Emacs was not in its own process group, then we know we're
696 running under a shell (or a caller) that doesn't know how to
697 separate itself from Emacs (like sh). Emacs must be in its own
698 process group in order to receive SIGIO correctly. In this
699 situation, we put ourselves in our own pgroup, forcibly set the
700 tty's pgroup to our pgroup, and make sure to restore and reinstate
701 the tty's pgroup just like any other terminal setting. If
702 inherited_group was not the tty's pgroup, then we'll get a
703 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
704 it goes foreground in the future, which is what should happen. */
706 static pid_t inherited_pgroup
;
709 init_foreground_group (void)
711 pid_t pgrp
= getpgrp ();
712 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
715 /* Block and unblock SIGTTOU. */
718 block_tty_out_signal (sigset_t
*oldset
)
722 sigemptyset (&blocked
);
723 sigaddset (&blocked
, SIGTTOU
);
724 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
729 unblock_tty_out_signal (sigset_t
const *oldset
)
732 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
736 /* Safely set a controlling terminal FD's process group to PGID.
737 If we are not in the foreground already, POSIX requires tcsetpgrp
738 to deliver a SIGTTOU signal, which would stop us. This is an
739 annoyance, so temporarily ignore the signal.
741 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
742 skip all this unless SIGTTOU is defined. */
744 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
749 block_tty_out_signal (&oldset
);
750 tcsetpgrp (fd
, pgid
);
751 unblock_tty_out_signal (&oldset
);
756 /* Split off the foreground process group to Emacs alone. When we are
757 in the foreground, but not started in our own process group,
758 redirect the tty device handle FD to point to our own process
759 group. FD must be the file descriptor of the controlling tty. */
761 narrow_foreground_group (int fd
)
763 if (inherited_pgroup
&& setpgid (0, 0) == 0)
764 tcsetpgrp_without_stopping (fd
, getpid ());
767 /* Set the tty to our original foreground group. */
769 widen_foreground_group (int fd
)
771 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
772 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
775 /* Getting and setting emacs_tty structures. */
777 /* Set *TC to the parameters associated with the terminal FD,
778 or clear it if the parameters are not available. */
780 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
782 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
783 memset (&settings
->main
, 0, sizeof (settings
->main
));
786 HANDLE h
= (HANDLE
)_get_osfhandle (fd
);
789 if (h
&& h
!= INVALID_HANDLE_VALUE
)
791 if (GetConsoleMode (h
, &console_mode
))
792 settings
->main
= console_mode
;
794 #endif /* WINDOWSNT */
796 /* We have those nifty POSIX tcmumbleattr functions. */
797 tcgetattr (fd
, &settings
->main
);
802 /* Set the parameters of the tty on FD according to the contents of
803 *SETTINGS. If FLUSHP, discard input.
804 Return 0 if all went well, and -1 (setting errno) if anything failed. */
807 emacs_set_tty (int fd
, struct emacs_tty
*settings
, bool flushp
)
809 /* Set the primary parameters - baud rate, character size, etcetera. */
812 HANDLE h
= (HANDLE
)_get_osfhandle (fd
);
814 if (h
&& h
!= INVALID_HANDLE_VALUE
)
818 /* Assume the handle is open for input. */
820 FlushConsoleInputBuffer (h
);
821 new_mode
= settings
->main
;
822 SetConsoleMode (h
, new_mode
);
824 #endif /* WINDOWSNT */
827 /* We have those nifty POSIX tcmumbleattr functions.
828 William J. Smith <wjs@wiis.wang.com> writes:
829 "POSIX 1003.1 defines tcsetattr to return success if it was
830 able to perform any of the requested actions, even if some
831 of the requested actions could not be performed.
832 We must read settings back to ensure tty setup properly.
833 AIX requires this to keep tty from hanging occasionally." */
834 /* This make sure that we don't loop indefinitely in here. */
835 for (i
= 0 ; i
< 10 ; i
++)
836 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
847 memset (&new, 0, sizeof (new));
848 /* Get the current settings, and see if they're what we asked for. */
849 tcgetattr (fd
, &new);
850 /* We cannot use memcmp on the whole structure here because under
851 * aix386 the termios structure has some reserved field that may
854 if ( new.c_iflag
== settings
->main
.c_iflag
855 && new.c_oflag
== settings
->main
.c_oflag
856 && new.c_cflag
== settings
->main
.c_cflag
857 && new.c_lflag
== settings
->main
.c_lflag
858 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
865 /* We have survived the tempest. */
872 static int old_fcntl_owner
[FD_SETSIZE
];
873 #endif /* F_SETOWN */
875 /* This may also be defined in stdio,
876 but if so, this does no harm,
877 and using the same name avoids wasting the other one's space. */
880 unsigned char _sobuf
[BUFSIZ
+8];
885 /* Initialize the terminal mode on all tty devices that are currently
889 init_all_sys_modes (void)
891 struct tty_display_info
*tty
;
892 for (tty
= tty_list
; tty
; tty
= tty
->next
)
893 init_sys_modes (tty
);
896 /* Initialize the terminal mode on the given tty device. */
899 init_sys_modes (struct tty_display_info
*tty_out
)
901 struct emacs_tty tty
;
902 Lisp_Object terminal
;
904 Vtty_erase_char
= Qnil
;
909 if (!tty_out
->output
)
910 return; /* The tty is suspended. */
912 narrow_foreground_group (fileno (tty_out
->input
));
914 if (! tty_out
->old_tty
)
915 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
917 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
919 tty
= *tty_out
->old_tty
;
921 #if !defined (DOS_NT)
922 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
924 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
925 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
926 #ifdef INLCR /* I'm just being cautious,
927 since I can't check how widespread INLCR is--rms. */
928 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
931 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
933 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
934 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
936 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
938 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
939 if (tty_out
->flow_control
)
941 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
943 tty
.main
.c_iflag
&= ~IXANY
;
947 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
948 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
950 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
952 if (tty_out
->meta_key
)
954 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
955 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
959 XSETTERMINAL(terminal
, tty_out
->terminal
);
960 if (!NILP (Fcontrolling_tty_p (terminal
)))
962 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
963 /* Set up C-g for both SIGQUIT and SIGINT.
964 We don't know which we will get, but we handle both alike
965 so which one it really gives us does not matter. */
966 tty
.main
.c_cc
[VQUIT
] = quit_char
;
970 /* We normally don't get interrupt or quit signals from tty
971 devices other than our controlling terminal; therefore,
972 we must handle C-g as normal input. Unfortunately, this
973 means that the interrupt and quit feature must be
974 disabled on secondary ttys, or we would not even see the
977 Note that even though emacsclient could have special code
978 to pass SIGINT to Emacs, we should _not_ enable
979 interrupt/quit keys for emacsclient frames. This means
980 that we can't break out of loops in C code from a
981 secondary tty frame, but we can always decide what
982 display the C-g came from, which is more important from a
983 usability point of view. (Consider the case when two
984 people work together using the same Emacs instance.) */
985 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
986 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
988 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
989 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
991 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
996 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
999 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
1000 #endif /* V_DSUSP */
1001 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1002 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1005 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1008 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1009 #endif /* VREPRINT */
1011 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1012 #endif /* VWERASE */
1014 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1015 #endif /* VDISCARD */
1017 if (tty_out
->flow_control
)
1020 tty
.main
.c_cc
[VSTART
] = '\021';
1023 tty
.main
.c_cc
[VSTOP
] = '\023';
1029 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1032 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1037 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1038 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1039 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1040 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1041 if (tty_out
->flow_control
)
1044 tty
.main
.c_cc
[VSTART
] = '\021';
1047 tty
.main
.c_cc
[VSTOP
] = '\023';
1050 /* Also, PTY overloads NUL and BREAK.
1051 don't ignore break, but don't signal either, so it looks like NUL.
1052 This really serves a purpose only if running in an XTERM window
1053 or via TELNET or the like, but does no harm elsewhere. */
1054 tty
.main
.c_iflag
&= ~IGNBRK
;
1055 tty
.main
.c_iflag
&= ~BRKINT
;
1057 #endif /* not DOS_NT */
1059 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1060 if (!tty_out
->term_initted
)
1061 internal_terminal_init ();
1062 dos_ttraw (tty_out
);
1065 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1067 /* This code added to insure that, if flow-control is not to be used,
1068 we have an unlocked terminal at the start. */
1071 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1074 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1077 #if !defined (DOS_NT)
1079 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1084 if (interrupt_input
)
1086 old_fcntl_owner
[fileno (tty_out
->input
)] =
1087 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1088 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1089 init_sigio (fileno (tty_out
->input
));
1091 if (gpm_tty
== tty_out
)
1093 /* Arrange for mouse events to give us SIGIO signals. */
1094 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1095 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1096 init_sigio (gpm_fd
);
1098 #endif /* HAVE_GPM */
1100 #endif /* F_GETOWN */
1103 /* This symbol is defined on recent USG systems.
1104 Someone says without this call USG won't really buffer the file
1105 even with a call to setbuf. */
1106 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1108 setbuf (tty_out
->output
, (char *) _sobuf
);
1111 if (tty_out
->terminal
->set_terminal_modes_hook
)
1112 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1114 if (!tty_out
->term_initted
)
1116 Lisp_Object tail
, frame
;
1117 FOR_EACH_FRAME (tail
, frame
)
1119 /* XXX This needs to be revised. */
1120 if (FRAME_TERMCAP_P (XFRAME (frame
))
1121 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1122 init_frame_faces (XFRAME (frame
));
1126 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1128 /* We used to call "direct_output_forward_char(0)" here,
1129 but it's not clear why, since it may not do anything anyway. */
1133 Lisp_Object tail
, frame
;
1135 FOR_EACH_FRAME (tail
, frame
)
1137 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1138 || FRAME_MSDOS_P (XFRAME (frame
)))
1139 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1140 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1144 tty_out
->term_initted
= 1;
1147 /* Return true if safe to use tabs in output.
1148 At the time this is called, init_sys_modes has not been done yet. */
1151 tabs_safe_p (int fd
)
1153 struct emacs_tty etty
;
1155 emacs_get_tty (fd
, &etty
);
1158 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1159 #else /* not TABDLY */
1161 #endif /* not TABDLY */
1167 /* Discard echoing. */
1170 suppress_echo_on_tty (int fd
)
1172 struct emacs_tty etty
;
1174 emacs_get_tty (fd
, &etty
);
1176 /* Set raw input mode. */
1179 etty
.main
.c_lflag
&= ~ICANON
; /* Disable buffering */
1180 etty
.main
.c_lflag
&= ~ECHO
; /* Disable echoing */
1181 #endif /* ! WINDOWSNT */
1182 emacs_set_tty (fd
, &etty
, 0);
1185 /* Get terminal size from system.
1186 Store number of lines into *HEIGHTP and width into *WIDTHP.
1187 We store 0 if there's no valid information. */
1190 get_tty_size (int fd
, int *widthp
, int *heightp
)
1192 #if defined TIOCGWINSZ
1195 struct winsize size
;
1197 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1198 *widthp
= *heightp
= 0;
1201 *widthp
= size
.ws_col
;
1202 *heightp
= size
.ws_row
;
1205 #elif defined TIOCGSIZE
1207 /* SunOS - style. */
1208 struct ttysize size
;
1210 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1211 *widthp
= *heightp
= 0;
1214 *widthp
= size
.ts_cols
;
1215 *heightp
= size
.ts_lines
;
1218 #elif defined WINDOWSNT
1220 CONSOLE_SCREEN_BUFFER_INFO info
;
1221 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1223 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1224 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1227 *widthp
= *heightp
= 0;
1231 *widthp
= ScreenCols ();
1232 *heightp
= ScreenRows ();
1234 #else /* system doesn't know size */
1242 /* Set the logical window size associated with descriptor FD
1243 to HEIGHT and WIDTH. This is used mainly with ptys.
1244 Return a negative value on failure. */
1247 set_window_size (int fd
, int height
, int width
)
1252 struct winsize size
;
1253 size
.ws_row
= height
;
1254 size
.ws_col
= width
;
1256 return ioctl (fd
, TIOCSWINSZ
, &size
);
1261 /* SunOS - style. */
1262 struct ttysize size
;
1263 size
.ts_lines
= height
;
1264 size
.ts_cols
= width
;
1266 return ioctl (fd
, TIOCGSIZE
, &size
);
1269 #endif /* not SunOS-style */
1270 #endif /* not BSD-style */
1275 /* Prepare all terminal devices for exiting Emacs. */
1278 reset_all_sys_modes (void)
1280 struct tty_display_info
*tty
;
1281 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1282 reset_sys_modes (tty
);
1285 /* Prepare the terminal for closing it; move the cursor to the
1286 bottom of the frame, turn off interrupt-driven I/O, etc. */
1289 reset_sys_modes (struct tty_display_info
*tty_out
)
1296 if (!tty_out
->term_initted
)
1299 if (!tty_out
->output
)
1300 return; /* The tty is suspended. */
1302 /* Go to and clear the last line of the terminal. */
1304 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1306 /* Code adapted from tty_clear_end_of_line. */
1307 if (tty_out
->TS_clr_line
)
1309 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1312 { /* have to do it the hard way */
1314 tty_turn_off_insert (tty_out
);
1316 for (i
= cursorX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1318 fputc (' ', tty_out
->output
);
1322 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1323 fflush (tty_out
->output
);
1325 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1326 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1328 /* Avoid possible loss of output when changing terminal modes. */
1329 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1334 if (interrupt_input
)
1336 reset_sigio (fileno (tty_out
->input
));
1337 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1338 old_fcntl_owner
[fileno (tty_out
->input
)]);
1340 #endif /* F_SETOWN */
1341 fcntl (fileno (tty_out
->input
), F_SETFL
,
1342 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1345 if (tty_out
->old_tty
)
1346 while (emacs_set_tty (fileno (tty_out
->input
),
1347 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1350 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1354 widen_foreground_group (fileno (tty_out
->input
));
1359 /* Set up the proper status flags for use of a pty. */
1364 /* I'm told that TOICREMOTE does not mean control chars
1365 "can't be sent" but rather that they don't have
1366 input-editing or signaling effects.
1367 That should be good, because we have other ways
1368 to do those things in Emacs.
1369 However, telnet mode seems not to work on 4.2.
1370 So TIOCREMOTE is turned off now. */
1372 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1373 will hang. In particular, the "timeout" feature (which
1374 causes a read to return if there is no data available)
1375 does this. Also it is known that telnet mode will hang
1376 in such a way that Emacs must be stopped (perhaps this
1377 is the same problem).
1379 If TIOCREMOTE is turned off, then there is a bug in
1380 hp-ux which sometimes loses data. Apparently the
1381 code which blocks the master process when the internal
1382 buffer fills up does not work. Other than this,
1383 though, everything else seems to work fine.
1385 Since the latter lossage is more benign, we may as well
1386 lose that way. -- cph */
1388 #if defined (UNIX98_PTYS)
1391 ioctl (fd
, FIONBIO
, &on
);
1396 #endif /* HAVE_PTYS */
1399 #include <sys/socket.h>
1401 #endif /* HAVE_SOCKETS */
1404 #ifndef HAVE_H_ERRNO
1407 #endif /* TRY_AGAIN */
1410 init_system_name (void)
1412 #ifndef HAVE_GETHOSTNAME
1415 Vsystem_name
= build_string (uts
.nodename
);
1416 #else /* HAVE_GETHOSTNAME */
1417 char *hostname_alloc
= NULL
;
1418 char hostname_buf
[256];
1419 ptrdiff_t hostname_size
= sizeof hostname_buf
;
1420 char *hostname
= hostname_buf
;
1422 /* Try to get the host name; if the buffer is too short, try
1423 again. Apparently, the only indication gethostname gives of
1424 whether the buffer was large enough is the presence or absence
1425 of a '\0' in the string. Eech. */
1428 gethostname (hostname
, hostname_size
- 1);
1429 hostname
[hostname_size
- 1] = '\0';
1431 /* Was the buffer large enough for the '\0'? */
1432 if (strlen (hostname
) < hostname_size
- 1)
1435 hostname
= hostname_alloc
= xpalloc (hostname_alloc
, &hostname_size
, 1,
1436 min (PTRDIFF_MAX
, SIZE_MAX
), 1);
1439 /* Turn the hostname into the official, fully-qualified hostname.
1440 Don't do this if we're going to dump; this can confuse system
1441 libraries on some machines and make the dumped emacs core dump. */
1444 #endif /* not CANNOT_DUMP */
1445 if (! strchr (hostname
, '.'))
1448 #ifdef HAVE_GETADDRINFO
1449 struct addrinfo
*res
;
1450 struct addrinfo hints
;
1453 memset (&hints
, 0, sizeof (hints
));
1454 hints
.ai_socktype
= SOCK_STREAM
;
1455 hints
.ai_flags
= AI_CANONNAME
;
1457 for (count
= 0;; count
++)
1459 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1460 || ret
!= EAI_AGAIN
)
1465 Fsleep_for (make_number (1), Qnil
);
1470 struct addrinfo
*it
= res
;
1473 char *fqdn
= it
->ai_canonname
;
1474 if (fqdn
&& strchr (fqdn
, '.')
1475 && strcmp (fqdn
, "localhost.localdomain") != 0)
1481 ptrdiff_t len
= strlen (it
->ai_canonname
);
1482 if (hostname_size
<= len
)
1484 hostname_size
= len
+ 1;
1485 hostname
= hostname_alloc
= xrealloc (hostname_alloc
,
1488 strcpy (hostname
, it
->ai_canonname
);
1492 #else /* !HAVE_GETADDRINFO */
1494 for (count
= 0;; count
++)
1500 hp
= gethostbyname (hostname
);
1502 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1509 Fsleep_for (make_number (1), Qnil
);
1514 char *fqdn
= (char *) hp
->h_name
;
1516 if (!strchr (fqdn
, '.'))
1518 /* We still don't have a fully qualified domain name.
1519 Try to find one in the list of alternate names */
1520 char **alias
= hp
->h_aliases
;
1522 && (!strchr (*alias
, '.')
1523 || !strcmp (*alias
, "localhost.localdomain")))
1530 #endif /* !HAVE_GETADDRINFO */
1532 #endif /* HAVE_SOCKETS */
1533 Vsystem_name
= build_string (hostname
);
1534 xfree (hostname_alloc
);
1535 #endif /* HAVE_GETHOSTNAME */
1538 for (p
= SSDATA (Vsystem_name
); *p
; p
++)
1539 if (*p
== ' ' || *p
== '\t')
1544 sigset_t empty_mask
;
1546 static struct sigaction process_fatal_action
;
1549 emacs_sigaction_flags (void)
1552 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1553 'select') to reset their timeout on some platforms (e.g.,
1554 HP-UX 11), which is not what we want. Also, when Emacs is
1555 interactive, we don't want SA_RESTART because we need to poll
1556 for pending input so we need long-running syscalls to be interrupted
1557 after a signal that sets pending_signals.
1559 Non-interactive keyboard input goes through stdio, where we
1560 always want restartable system calls. */
1567 /* Store into *ACTION a signal action suitable for Emacs, with handler
1570 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1572 sigemptyset (&action
->sa_mask
);
1574 /* When handling a signal, block nonfatal system signals that are caught
1575 by Emacs. This makes race conditions less likely. */
1576 sigaddset (&action
->sa_mask
, SIGALRM
);
1578 sigaddset (&action
->sa_mask
, SIGCHLD
);
1581 sigaddset (&action
->sa_mask
, SIGDANGER
);
1583 #ifdef PROFILER_CPU_SUPPORT
1584 sigaddset (&action
->sa_mask
, SIGPROF
);
1587 sigaddset (&action
->sa_mask
, SIGWINCH
);
1589 if (! noninteractive
)
1591 sigaddset (&action
->sa_mask
, SIGINT
);
1592 sigaddset (&action
->sa_mask
, SIGQUIT
);
1594 sigaddset (&action
->sa_mask
, SIGIO
);
1598 action
->sa_handler
= handler
;
1599 action
->sa_flags
= emacs_sigaction_flags ();
1602 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1603 static pthread_t main_thread
;
1606 /* SIG has arrived at the current process. Deliver it to the main
1607 thread, which should handle it with HANDLER.
1609 If we are on the main thread, handle the signal SIG with HANDLER.
1610 Otherwise, redirect the signal to the main thread, blocking it from
1611 this thread. POSIX says any thread can receive a signal that is
1612 associated with a process, process group, or asynchronous event.
1613 On GNU/Linux that is not true, but for other systems (FreeBSD at
1616 deliver_process_signal (int sig
, signal_handler_t handler
)
1618 /* Preserve errno, to avoid race conditions with signal handlers that
1619 might change errno. Races can occur even in single-threaded hosts. */
1620 int old_errno
= errno
;
1622 bool on_main_thread
= true;
1623 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1624 if (! pthread_equal (pthread_self (), main_thread
))
1627 sigemptyset (&blocked
);
1628 sigaddset (&blocked
, sig
);
1629 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1630 pthread_kill (main_thread
, sig
);
1631 on_main_thread
= false;
1640 /* Static location to save a fatal backtrace in a thread.
1641 FIXME: If two subsidiary threads fail simultaneously, the resulting
1642 backtrace may be garbage. */
1643 enum { BACKTRACE_LIMIT_MAX
= 500 };
1644 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1645 static int thread_backtrace_npointers
;
1647 /* SIG has arrived at the current thread.
1648 If we are on the main thread, handle the signal SIG with HANDLER.
1649 Otherwise, this is a fatal error in the handling thread. */
1651 deliver_thread_signal (int sig
, signal_handler_t handler
)
1653 int old_errno
= errno
;
1655 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1656 if (! pthread_equal (pthread_self (), main_thread
))
1658 thread_backtrace_npointers
1659 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1660 sigaction (sig
, &process_fatal_action
, 0);
1661 pthread_kill (main_thread
, sig
);
1663 /* Avoid further damage while the main thread is exiting. */
1665 sigsuspend (&empty_mask
);
1673 #if !HAVE_DECL_SYS_SIGLIST
1675 # ifdef _sys_siglist
1676 # define sys_siglist _sys_siglist
1677 # elif HAVE_DECL___SYS_SIGLIST
1678 # define sys_siglist __sys_siglist
1680 # define sys_siglist my_sys_siglist
1681 static char const *sys_siglist
[NSIG
];
1686 # define sys_siglist_entries _sys_nsig
1688 # define sys_siglist_entries NSIG
1691 /* Handle bus errors, invalid instruction, etc. */
1693 handle_fatal_signal (int sig
)
1695 terminate_due_to_signal (sig
, 40);
1699 deliver_fatal_signal (int sig
)
1701 deliver_process_signal (sig
, handle_fatal_signal
);
1705 deliver_fatal_thread_signal (int sig
)
1707 deliver_thread_signal (sig
, handle_fatal_signal
);
1710 static _Noreturn
void
1711 handle_arith_signal (int sig
)
1713 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1714 xsignal0 (Qarith_error
);
1718 deliver_arith_signal (int sig
)
1720 deliver_thread_signal (sig
, handle_arith_signal
);
1725 /* Handler for SIGDANGER. */
1727 handle_danger_signal (int sig
)
1729 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1731 /* It might be unsafe to call do_auto_save now. */
1732 force_auto_save_soon ();
1736 deliver_danger_signal (int sig
)
1738 deliver_process_signal (sig
, handle_danger_signal
);
1742 /* Treat SIG as a terminating signal, unless it is already ignored and
1743 we are in --batch mode. Among other things, this makes nohup work. */
1745 maybe_fatal_sig (int sig
)
1747 bool catch_sig
= !noninteractive
;
1750 struct sigaction old_action
;
1751 sigaction (sig
, 0, &old_action
);
1752 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1755 sigaction (sig
, &process_fatal_action
, 0);
1759 init_signals (bool dumping
)
1761 struct sigaction thread_fatal_action
;
1762 struct sigaction action
;
1764 sigemptyset (&empty_mask
);
1766 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1767 main_thread
= pthread_self ();
1770 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1773 sys_siglist
[SIGABRT
] = "Aborted";
1775 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1777 sys_siglist
[SIGALRM
] = "Alarm clock";
1779 sys_siglist
[SIGBUS
] = "Bus error";
1782 sys_siglist
[SIGCHLD
] = "Child status changed";
1785 sys_siglist
[SIGCONT
] = "Continued";
1788 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1791 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1794 sys_siglist
[SIGEMT
] = "Emulation trap";
1796 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1798 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1801 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1803 sys_siglist
[SIGHUP
] = "Hangup";
1804 sys_siglist
[SIGILL
] = "Illegal instruction";
1805 sys_siglist
[SIGINT
] = "Interrupt";
1807 sys_siglist
[SIGIO
] = "I/O possible";
1810 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1813 sys_siglist
[SIGIOT
] = "IOT trap";
1815 sys_siglist
[SIGKILL
] = "Killed";
1817 sys_siglist
[SIGLOST
] = "Resource lost";
1820 sys_siglist
[SIGLWP
] = "SIGLWP";
1823 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1826 sys_siglist
[SIGWIND
] = "SIGPHONE";
1828 sys_siglist
[SIGPIPE
] = "Broken pipe";
1830 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1833 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1836 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1839 sys_siglist
[SIGPWR
] = "Power-fail restart";
1841 sys_siglist
[SIGQUIT
] = "Quit";
1843 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1846 sys_siglist
[SIGSAK
] = "Secure attention";
1848 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1850 sys_siglist
[SIGSOUND
] = "Sound completed";
1853 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1856 sys_siglist
[SIGSTP
] = "Stopped (user)";
1859 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1861 sys_siglist
[SIGTERM
] = "Terminated";
1863 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1866 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1869 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1872 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1875 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1878 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1881 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1884 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1887 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1890 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1893 sys_siglist
[SIGWINCH
] = "Window size changed";
1896 sys_siglist
[SIGWIND
] = "SIGWIND";
1899 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1902 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1905 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1907 /* Don't alter signal handlers if dumping. On some machines,
1908 changing signal handlers sets static data that would make signals
1909 fail to work right when the dumped Emacs is run. */
1913 sigfillset (&process_fatal_action
.sa_mask
);
1914 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1915 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1917 sigfillset (&thread_fatal_action
.sa_mask
);
1918 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1919 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1921 /* SIGINT may need special treatment on MS-Windows. See
1922 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1923 Please update the doc of kill-emacs, kill-emacs-hook, and
1924 NEWS if you change this. */
1926 maybe_fatal_sig (SIGHUP
);
1927 maybe_fatal_sig (SIGINT
);
1928 maybe_fatal_sig (SIGTERM
);
1930 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1931 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1932 to behave more like typical batch applications do. */
1933 if (! noninteractive
)
1934 signal (SIGPIPE
, SIG_IGN
);
1936 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1937 sigaction (SIGILL
, &thread_fatal_action
, 0);
1938 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1940 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1941 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1942 interpreter's floating point operations, so treat SIGFPE as an
1943 arith-error if it arises in the main thread. */
1944 if (IEEE_FLOATING_POINT
)
1945 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1948 emacs_sigaction_init (&action
, deliver_arith_signal
);
1949 sigaction (SIGFPE
, &action
, 0);
1953 add_user_signal (SIGUSR1
, "sigusr1");
1956 add_user_signal (SIGUSR2
, "sigusr2");
1958 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1960 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1963 sigaction (SIGORE
, &thread_fatal_action
, 0);
1966 sigaction (SIGUME
, &thread_fatal_action
, 0);
1969 sigaction (SIGDLK
, &process_fatal_action
, 0);
1972 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1975 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1978 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1981 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1983 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1985 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1987 sigaction (SIGTERM
, &process_fatal_action
, 0);
1989 signal (SIGPROF
, SIG_IGN
);
1992 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1995 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1998 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
2002 /* This just means available memory is getting low. */
2003 emacs_sigaction_init (&action
, deliver_danger_signal
);
2004 sigaction (SIGDANGER
, &action
, 0);
2007 /* AIX-specific signals. */
2009 sigaction (SIGGRANT
, &process_fatal_action
, 0);
2012 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
2015 sigaction (SIGMSG
, &process_fatal_action
, 0);
2018 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
2021 sigaction (SIGSAK
, &process_fatal_action
, 0);
2024 sigaction (SIGSOUND
, &process_fatal_action
, 0);
2027 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
2037 /* Figure out how many bits the system's random number generator uses.
2038 `random' and `lrand48' are assumed to return 31 usable bits.
2039 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2040 so we'll shift it and treat it like the 15-bit USG `rand'. */
2044 # define RAND_BITS 31
2045 # else /* !HAVE_RANDOM */
2046 # ifdef HAVE_LRAND48
2047 # define RAND_BITS 31
2048 # define random lrand48
2049 # else /* !HAVE_LRAND48 */
2050 # define RAND_BITS 15
2051 # if RAND_MAX == 32767
2052 # define random rand
2053 # else /* RAND_MAX != 32767 */
2054 # if RAND_MAX == 2147483647
2055 # define random() (rand () >> 16)
2056 # else /* RAND_MAX != 2147483647 */
2058 # define random rand
2060 # define random() (rand () >> 16)
2062 # endif /* RAND_MAX != 2147483647 */
2063 # endif /* RAND_MAX != 32767 */
2064 # endif /* !HAVE_LRAND48 */
2065 # endif /* !HAVE_RANDOM */
2066 #endif /* !RAND_BITS */
2069 seed_random (void *seed
, ptrdiff_t seed_size
)
2071 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2072 unsigned int arg
= 0;
2076 unsigned char *argp
= (unsigned char *) &arg
;
2077 unsigned char *seedp
= seed
;
2079 for (i
= 0; i
< seed_size
; i
++)
2080 argp
[i
% sizeof arg
] ^= seedp
[i
];
2084 # ifdef HAVE_LRAND48
2095 struct timespec t
= current_timespec ();
2096 uintmax_t v
= getpid () ^ t
.tv_sec
^ t
.tv_nsec
;
2097 seed_random (&v
, sizeof v
);
2101 * Return a nonnegative random integer out of whatever we've got.
2102 * It contains enough bits to make a random (signed) Emacs fixnum.
2103 * This suffices even for a 64-bit architecture with a 15-bit rand.
2110 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2111 val
= (random () ^ (val
<< RAND_BITS
)
2112 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2113 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2114 return val
& INTMASK
;
2117 #ifndef HAVE_SNPRINTF
2118 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2120 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2122 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2123 ptrdiff_t nbytes
= size
- 1;
2128 va_start (ap
, format
);
2129 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2133 if (nbytes
== size
- 1)
2135 /* Calculate the length of the string that would have been created
2136 had the buffer been large enough. */
2137 char stackbuf
[4000];
2139 ptrdiff_t bsize
= sizeof stackbuf
;
2140 va_start (ap
, format
);
2141 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2147 if (INT_MAX
< nbytes
)
2160 /* If a backtrace is available, output the top lines of it to stderr.
2161 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2162 This function may be called from a signal handler, so it should
2163 not invoke async-unsafe functions like malloc. */
2165 emacs_backtrace (int backtrace_limit
)
2167 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2168 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2172 if (thread_backtrace_npointers
)
2174 buffer
= thread_backtrace_buffer
;
2175 npointers
= thread_backtrace_npointers
;
2179 buffer
= main_backtrace_buffer
;
2180 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2185 emacs_write (STDERR_FILENO
, "\nBacktrace:\n", 12);
2186 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2187 if (bounded_limit
< npointers
)
2188 emacs_write (STDERR_FILENO
, "...\n", 4);
2196 terminate_due_to_signal (SIGABRT
, 40);
2200 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2201 Arrange for subprograms to not inherit the file descriptor.
2202 Prefer a method that is multithread-safe, if available.
2203 Do not fail merely because the open was interrupted by a signal.
2204 Allow the user to quit. */
2207 emacs_open (const char *file
, int oflags
, int mode
)
2210 oflags
|= O_CLOEXEC
;
2211 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2213 if (! O_CLOEXEC
&& 0 <= fd
)
2214 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2218 /* Open FILE as a stream for Emacs use, with mode MODE.
2219 Act like emacs_open with respect to threads, signals, and quits. */
2222 emacs_fopen (char const *file
, char const *mode
)
2224 int fd
, omode
, oflags
;
2226 char const *m
= mode
;
2230 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2231 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2232 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2233 default: emacs_abort ();
2239 case '+': omode
= O_RDWR
; break;
2240 case 'b': bflag
= O_BINARY
; break;
2241 case 't': bflag
= O_TEXT
; break;
2242 default: /* Ignore. */ break;
2245 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2246 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2249 /* Create a pipe for Emacs use. */
2252 emacs_pipe (int fd
[2])
2257 int result
= pipe2 (fd
, O_CLOEXEC
);
2258 if (! O_CLOEXEC
&& result
== 0)
2260 fcntl (fd
[0], F_SETFD
, FD_CLOEXEC
);
2261 fcntl (fd
[1], F_SETFD
, FD_CLOEXEC
);
2267 /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs.
2268 For the background behind this mess, please see Austin Group defect 529
2269 <http://austingroupbugs.net/view.php?id=529>. */
2271 #ifndef POSIX_CLOSE_RESTART
2272 # define POSIX_CLOSE_RESTART 1
2274 posix_close (int fd
, int flag
)
2276 /* Only the POSIX_CLOSE_RESTART case is emulated. */
2277 eassert (flag
== POSIX_CLOSE_RESTART
);
2279 /* Things are tricky if close (fd) returns -1 with errno == EINTR
2280 on a system that does not define POSIX_CLOSE_RESTART.
2282 In this case, in some systems (e.g., GNU/Linux, AIX) FD is
2283 closed, and retrying the close could inadvertently close a file
2284 descriptor allocated by some other thread. In other systems
2285 (e.g., HP/UX) FD is not closed. And in still other systems
2286 (e.g., OS X, Solaris), maybe FD is closed, maybe not, and in a
2287 multithreaded program there can be no way to tell.
2289 So, in this case, pretend that the close succeeded. This works
2290 well on systems like GNU/Linux that close FD. Although it may
2291 leak a file descriptor on other systems, the leak is unlikely and
2292 it's better to leak than to close a random victim. */
2293 return close (fd
) == 0 || errno
== EINTR
? 0 : -1;
2297 /* Close FD, retrying if interrupted. If successful, return 0;
2298 otherwise, return -1 and set errno to a non-EINTR value. Consider
2299 an EINPROGRESS error to be successful, as that's merely a signal
2300 arriving. FD is always closed when this function returns, even
2303 Do not call this function if FD is nonnegative and might already be closed,
2304 as that might close an innocent victim opened by some other thread. */
2307 emacs_close (int fd
)
2311 int r
= posix_close (fd
, POSIX_CLOSE_RESTART
);
2314 if (!POSIX_CLOSE_RESTART
|| errno
!= EINTR
)
2316 eassert (errno
!= EBADF
|| fd
< 0);
2317 return errno
== EINPROGRESS
? 0 : r
;
2322 /* Maximum number of bytes to read or write in a single system call.
2323 This works around a serious bug in Linux kernels before 2.6.16; see
2324 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2325 It's likely to work around similar bugs in other operating systems, so do it
2326 on all platforms. Round INT_MAX down to a page size, with the conservative
2327 assumption that page sizes are at most 2**18 bytes (any kernel with a
2328 page size larger than that shouldn't have the bug). */
2329 #ifndef MAX_RW_COUNT
2330 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2333 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2334 Return the number of bytes read, which might be less than NBYTE.
2335 On error, set errno and return -1. */
2337 emacs_read (int fildes
, void *buf
, ptrdiff_t nbyte
)
2341 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2342 passes a size that large to emacs_read. */
2344 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2345 && (errno
== EINTR
))
2350 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2351 or if a partial write occurs. If interrupted, process pending
2352 signals if PROCESS SIGNALS. Return the number of bytes written, setting
2353 errno if this is less than NBYTE. */
2355 emacs_full_write (int fildes
, char const *buf
, ptrdiff_t nbyte
,
2356 bool process_signals
)
2358 ptrdiff_t bytes_written
= 0;
2362 ssize_t n
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2368 /* I originally used `QUIT' but that might causes files to
2369 be truncated if you hit C-g in the middle of it. --Stef */
2370 if (process_signals
&& pending_signals
)
2371 process_pending_signals ();
2383 return bytes_written
;
2386 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if
2387 interrupted or if a partial write occurs. Return the number of
2388 bytes written, setting errno if this is less than NBYTE. */
2390 emacs_write (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2392 return emacs_full_write (fildes
, buf
, nbyte
, 0);
2395 /* Like emacs_write, but also process pending signals if interrupted. */
2397 emacs_write_sig (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2399 return emacs_full_write (fildes
, buf
, nbyte
, 1);
2402 /* Write a diagnostic to standard error that contains MESSAGE and a
2403 string derived from errno. Preserve errno. Do not buffer stderr.
2404 Do not process pending signals if interrupted. */
2406 emacs_perror (char const *message
)
2409 char const *error_string
= strerror (err
);
2410 char const *command
= (initial_argv
&& initial_argv
[0]
2411 ? initial_argv
[0] : "emacs");
2412 /* Write it out all at once, if it's short; this is less likely to
2413 be interleaved with other output. */
2415 int nbytes
= snprintf (buf
, sizeof buf
, "%s: %s: %s\n",
2416 command
, message
, error_string
);
2417 if (0 <= nbytes
&& nbytes
< BUFSIZ
)
2418 emacs_write (STDERR_FILENO
, buf
, nbytes
);
2421 emacs_write (STDERR_FILENO
, command
, strlen (command
));
2422 emacs_write (STDERR_FILENO
, ": ", 2);
2423 emacs_write (STDERR_FILENO
, message
, strlen (message
));
2424 emacs_write (STDERR_FILENO
, ": ", 2);
2425 emacs_write (STDERR_FILENO
, error_string
, strlen (error_string
));
2426 emacs_write (STDERR_FILENO
, "\n", 1);
2431 /* Return a struct timeval that is roughly equivalent to T.
2432 Use the least timeval not less than T.
2433 Return an extremal value if the result would overflow. */
2435 make_timeval (struct timespec t
)
2438 tv
.tv_sec
= t
.tv_sec
;
2439 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2441 if (t
.tv_nsec
% 1000 != 0)
2443 if (tv
.tv_usec
< 999999)
2445 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2455 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2456 ATIME and MTIME, respectively.
2457 FD must be either negative -- in which case it is ignored --
2458 or a file descriptor that is open on FILE.
2459 If FD is nonnegative, then FILE can be NULL. */
2461 set_file_times (int fd
, const char *filename
,
2462 struct timespec atime
, struct timespec mtime
)
2464 struct timespec timespec
[2];
2465 timespec
[0] = atime
;
2466 timespec
[1] = mtime
;
2467 return fdutimens (fd
, filename
, timespec
);
2470 /* Like strsignal, except async-signal-safe, and this function typically
2471 returns a string in the C locale rather than the current locale. */
2473 safe_strsignal (int code
)
2475 char const *signame
= 0;
2477 if (0 <= code
&& code
< sys_siglist_entries
)
2478 signame
= sys_siglist
[code
];
2480 signame
= "Unknown signal";
2486 /* For make-serial-process */
2488 serial_open (Lisp_Object port
)
2490 int fd
= emacs_open (SSDATA (port
), O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2492 report_file_error ("Opening serial port", port
);
2494 ioctl (fd
, TIOCEXCL
, (char *) 0);
2500 #if !defined (HAVE_CFMAKERAW)
2501 /* Workaround for targets which are missing cfmakeraw. */
2502 /* Pasted from man page. */
2504 cfmakeraw (struct termios
*termios_p
)
2506 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2507 termios_p
->c_oflag
&= ~OPOST
;
2508 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2509 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2510 termios_p
->c_cflag
|= CS8
;
2512 #endif /* !defined (HAVE_CFMAKERAW */
2514 #if !defined (HAVE_CFSETSPEED)
2515 /* Workaround for targets which are missing cfsetspeed. */
2517 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2519 return (cfsetispeed (termios_p
, vitesse
)
2520 + cfsetospeed (termios_p
, vitesse
));
2524 /* For serial-process-configure */
2526 serial_configure (struct Lisp_Process
*p
,
2527 Lisp_Object contact
)
2529 Lisp_Object childp2
= Qnil
;
2530 Lisp_Object tem
= Qnil
;
2531 struct termios attr
;
2533 char summary
[4] = "???"; /* This usually becomes "8N1". */
2535 childp2
= Fcopy_sequence (p
->childp
);
2537 /* Read port attributes and prepare default configuration. */
2538 err
= tcgetattr (p
->outfd
, &attr
);
2540 report_file_error ("Failed tcgetattr", Qnil
);
2542 #if defined (CLOCAL)
2543 attr
.c_cflag
|= CLOCAL
;
2546 attr
.c_cflag
|= CREAD
;
2549 /* Configure speed. */
2550 if (!NILP (Fplist_member (contact
, QCspeed
)))
2551 tem
= Fplist_get (contact
, QCspeed
);
2553 tem
= Fplist_get (p
->childp
, QCspeed
);
2555 err
= cfsetspeed (&attr
, XINT (tem
));
2557 report_file_error ("Failed cfsetspeed", tem
);
2558 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2560 /* Configure bytesize. */
2561 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2562 tem
= Fplist_get (contact
, QCbytesize
);
2564 tem
= Fplist_get (p
->childp
, QCbytesize
);
2566 tem
= make_number (8);
2568 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2569 error (":bytesize must be nil (8), 7, or 8");
2570 summary
[0] = XINT (tem
) + '0';
2571 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2572 attr
.c_cflag
&= ~CSIZE
;
2573 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2575 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2576 if (XINT (tem
) != 8)
2577 error ("Bytesize cannot be changed");
2579 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2581 /* Configure parity. */
2582 if (!NILP (Fplist_member (contact
, QCparity
)))
2583 tem
= Fplist_get (contact
, QCparity
);
2585 tem
= Fplist_get (p
->childp
, QCparity
);
2586 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2587 error (":parity must be nil (no parity), `even', or `odd'");
2588 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2589 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2590 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2595 else if (EQ (tem
, Qeven
))
2598 attr
.c_cflag
|= PARENB
;
2599 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2601 else if (EQ (tem
, Qodd
))
2604 attr
.c_cflag
|= (PARENB
| PARODD
);
2605 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2608 /* Don't error on no parity, which should be set by cfmakeraw. */
2610 error ("Parity cannot be configured");
2612 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2614 /* Configure stopbits. */
2615 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2616 tem
= Fplist_get (contact
, QCstopbits
);
2618 tem
= Fplist_get (p
->childp
, QCstopbits
);
2620 tem
= make_number (1);
2622 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2623 error (":stopbits must be nil (1 stopbit), 1, or 2");
2624 summary
[2] = XINT (tem
) + '0';
2625 #if defined (CSTOPB)
2626 attr
.c_cflag
&= ~CSTOPB
;
2627 if (XINT (tem
) == 2)
2628 attr
.c_cflag
|= CSTOPB
;
2630 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2631 if (XINT (tem
) != 1)
2632 error ("Stopbits cannot be configured");
2634 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2636 /* Configure flowcontrol. */
2637 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2638 tem
= Fplist_get (contact
, QCflowcontrol
);
2640 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2641 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2642 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2643 #if defined (CRTSCTS)
2644 attr
.c_cflag
&= ~CRTSCTS
;
2646 #if defined (CNEW_RTSCTS)
2647 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2649 #if defined (IXON) && defined (IXOFF)
2650 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2654 /* Already configured. */
2656 else if (EQ (tem
, Qhw
))
2658 #if defined (CRTSCTS)
2659 attr
.c_cflag
|= CRTSCTS
;
2660 #elif defined (CNEW_RTSCTS)
2661 attr
.c_cflag
|= CNEW_RTSCTS
;
2663 error ("Hardware flowcontrol (RTS/CTS) not supported");
2666 else if (EQ (tem
, Qsw
))
2668 #if defined (IXON) && defined (IXOFF)
2669 attr
.c_iflag
|= (IXON
| IXOFF
);
2671 error ("Software flowcontrol (XON/XOFF) not supported");
2674 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2676 /* Activate configuration. */
2677 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2679 report_file_error ("Failed tcsetattr", Qnil
);
2681 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2682 pset_childp (p
, childp2
);
2684 #endif /* not DOS_NT */
2686 /* System depended enumeration of and access to system processes a-la ps(1). */
2690 /* Process enumeration and access via /proc. */
2693 list_system_processes (void)
2695 Lisp_Object procdir
, match
, proclist
, next
;
2696 struct gcpro gcpro1
, gcpro2
;
2697 register Lisp_Object tail
;
2699 GCPRO2 (procdir
, match
);
2700 /* For every process on the system, there's a directory in the
2701 "/proc" pseudo-directory whose name is the numeric ID of that
2703 procdir
= build_string ("/proc");
2704 match
= build_string ("[0-9]+");
2705 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2707 /* `proclist' gives process IDs as strings. Destructively convert
2708 each string into a number. */
2709 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2712 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2716 /* directory_files_internal returns the files in reverse order; undo
2718 proclist
= Fnreverse (proclist
);
2722 #elif defined DARWIN_OS || defined __FreeBSD__
2725 list_system_processes (void)
2728 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2730 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2733 struct kinfo_proc
*procs
;
2736 struct gcpro gcpro1
;
2737 Lisp_Object proclist
= Qnil
;
2739 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2742 procs
= xmalloc (len
);
2743 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2750 len
/= sizeof (struct kinfo_proc
);
2751 for (i
= 0; i
< len
; i
++)
2754 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2756 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2766 /* The WINDOWSNT implementation is in w32.c.
2767 The MSDOS implementation is in dosfns.c. */
2768 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2771 list_system_processes (void)
2776 #endif /* !defined (WINDOWSNT) */
2778 #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT
2779 static struct timespec
2780 time_from_jiffies (unsigned long long tval
, long hz
)
2782 unsigned long long s
= tval
/ hz
;
2783 unsigned long long frac
= tval
% hz
;
2786 if (TYPE_MAXIMUM (time_t) < s
)
2788 if (LONG_MAX
- 1 <= ULLONG_MAX
/ TIMESPEC_RESOLUTION
2789 || frac
<= ULLONG_MAX
/ TIMESPEC_RESOLUTION
)
2790 ns
= frac
* TIMESPEC_RESOLUTION
/ hz
;
2793 /* This is reachable only in the unlikely case that HZ * HZ
2794 exceeds ULLONG_MAX. It calculates an approximation that is
2795 guaranteed to be in range. */
2796 long hz_per_ns
= (hz
/ TIMESPEC_RESOLUTION
2797 + (hz
% TIMESPEC_RESOLUTION
!= 0));
2798 ns
= frac
/ hz_per_ns
;
2801 return make_timespec (s
, ns
);
2805 ltime_from_jiffies (unsigned long long tval
, long hz
)
2807 struct timespec t
= time_from_jiffies (tval
, hz
);
2808 return make_lisp_time (t
);
2811 static struct timespec
2815 struct timespec up
= make_timespec (0, 0);
2818 fup
= emacs_fopen ("/proc/uptime", "r");
2822 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2823 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2825 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2826 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2827 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2830 if (TYPE_MAXIMUM (time_t) < upsec
)
2832 upsec
= TYPE_MAXIMUM (time_t);
2833 upfrac
= TIMESPEC_RESOLUTION
- 1;
2837 int upfraclen
= upfrac_end
- upfrac_start
;
2838 for (; upfraclen
< LOG10_TIMESPEC_RESOLUTION
; upfraclen
++)
2840 for (; LOG10_TIMESPEC_RESOLUTION
< upfraclen
; upfraclen
--)
2842 upfrac
= min (upfrac
, TIMESPEC_RESOLUTION
- 1);
2844 up
= make_timespec (upsec
, upfrac
);
2853 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2854 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2857 procfs_ttyname (int rdev
)
2860 char name
[PATH_MAX
];
2863 fdev
= emacs_fopen ("/proc/tty/drivers", "r");
2869 unsigned long minor_beg
, minor_end
;
2870 char minor
[25]; /* 2 32-bit numbers + dash */
2873 for (; !feof (fdev
) && !ferror (fdev
); name
[0] = 0)
2875 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2876 && major
== MAJOR (rdev
))
2878 minor_beg
= strtoul (minor
, &endp
, 0);
2880 minor_end
= minor_beg
;
2881 else if (*endp
== '-')
2882 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2886 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2888 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2896 return build_string (name
);
2900 procfs_get_total_memory (void)
2903 uintmax_t retval
= 2 * 1024 * 1024; /* default: 2 GiB */
2907 fmem
= emacs_fopen ("/proc/meminfo", "r");
2911 uintmax_t entry_value
;
2915 switch (fscanf (fmem
, "MemTotal: %"SCNuMAX
, &entry_value
))
2918 retval
= entry_value
;
2923 while ((c
= getc (fmem
)) != EOF
&& c
!= '\n')
2941 system_process_attributes (Lisp_Object pid
)
2943 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2947 long clocks_per_sec
;
2949 char procbuf
[1025], *p
, *q
;
2952 static char const default_cmd
[] = "???";
2953 const char *cmd
= default_cmd
;
2954 int cmdsize
= sizeof default_cmd
- 1;
2955 char *cmdline
= NULL
;
2956 ptrdiff_t cmdline_size
;
2959 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2962 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2963 long priority
, niceness
, rss
;
2964 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2965 struct timespec tnow
, tstart
, tboot
, telapsed
, us_time
;
2967 Lisp_Object attrs
= Qnil
;
2968 Lisp_Object cmd_str
, decoded_cmd
;
2970 struct gcpro gcpro1
, gcpro2
;
2972 CHECK_NUMBER_OR_FLOAT (pid
);
2973 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2974 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2975 if (stat (procfn
, &st
) < 0)
2978 GCPRO2 (attrs
, decoded_cmd
);
2982 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2984 pw
= getpwuid (uid
);
2987 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2990 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2992 gr
= getgrgid (gid
);
2995 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2997 count
= SPECPDL_INDEX ();
2998 strcpy (fn
, procfn
);
2999 procfn_end
= fn
+ strlen (fn
);
3000 strcpy (procfn_end
, "/stat");
3001 fd
= emacs_open (fn
, O_RDONLY
, 0);
3006 record_unwind_protect_int (close_file_unwind
, fd
);
3007 nread
= emacs_read (fd
, procbuf
, sizeof procbuf
- 1);
3011 procbuf
[nread
] = '\0';
3014 p
= strchr (p
, '(');
3017 q
= strrchr (p
+ 1, ')');
3027 /* Command name is encoded in locale-coding-system; decode it. */
3028 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
3029 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3030 Vlocale_coding_system
, 0);
3031 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3033 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt
3034 utime stime cutime cstime priority nice thcount . start vsize rss */
3036 && (sscanf (q
+ 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu "
3037 "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"),
3038 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
3039 &minflt
, &cminflt
, &majflt
, &cmajflt
,
3040 &u_time
, &s_time
, &cutime
, &cstime
,
3041 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
)
3046 state_str
[1] = '\0';
3047 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3048 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid
)), attrs
);
3049 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp
)), attrs
);
3050 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess
)), attrs
);
3051 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
3052 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid
)), attrs
);
3053 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
3054 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
3055 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)),
3057 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)),
3059 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
3060 if (clocks_per_sec
< 0)
3061 clocks_per_sec
= 100;
3062 attrs
= Fcons (Fcons (Qutime
,
3063 ltime_from_jiffies (u_time
, clocks_per_sec
)),
3065 attrs
= Fcons (Fcons (Qstime
,
3066 ltime_from_jiffies (s_time
, clocks_per_sec
)),
3068 attrs
= Fcons (Fcons (Qtime
,
3069 ltime_from_jiffies (s_time
+ u_time
,
3072 attrs
= Fcons (Fcons (Qcutime
,
3073 ltime_from_jiffies (cutime
, clocks_per_sec
)),
3075 attrs
= Fcons (Fcons (Qcstime
,
3076 ltime_from_jiffies (cstime
, clocks_per_sec
)),
3078 attrs
= Fcons (Fcons (Qctime
,
3079 ltime_from_jiffies (cstime
+ cutime
,
3082 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
3083 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
3084 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount
)),
3086 tnow
= current_timespec ();
3087 telapsed
= get_up_time ();
3088 tboot
= timespec_sub (tnow
, telapsed
);
3089 tstart
= time_from_jiffies (start
, clocks_per_sec
);
3090 tstart
= timespec_add (tboot
, tstart
);
3091 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
3092 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/ 1024)),
3094 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4 * rss
)), attrs
);
3095 telapsed
= timespec_sub (tnow
, tstart
);
3096 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
3097 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
3098 pcpu
= timespectod (us_time
) / timespectod (telapsed
);
3101 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
3102 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
3105 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3108 unbind_to (count
, Qnil
);
3111 strcpy (procfn_end
, "/cmdline");
3112 fd
= emacs_open (fn
, O_RDONLY
, 0);
3115 ptrdiff_t readsize
, nread_incr
;
3116 record_unwind_protect_int (close_file_unwind
, fd
);
3117 record_unwind_protect_nothing ();
3118 nread
= cmdline_size
= 0;
3122 cmdline
= xpalloc (cmdline
, &cmdline_size
, 2, STRING_BYTES_BOUND
, 1);
3123 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3125 /* Leave room even if every byte needs escaping below. */
3126 readsize
= (cmdline_size
>> 1) - nread
;
3128 nread_incr
= emacs_read (fd
, cmdline
+ nread
, readsize
);
3129 nread
+= max (0, nread_incr
);
3131 while (nread_incr
== readsize
);
3135 /* We don't want trailing null characters. */
3136 for (p
= cmdline
+ nread
; cmdline
< p
&& !p
[-1]; p
--)
3139 /* Escape-quote whitespace and backslashes. */
3140 q
= cmdline
+ cmdline_size
;
3145 if (c_isspace (c
) || c
== '\\')
3149 nread
= cmdline
+ cmdline_size
- q
;
3154 nread
= cmdsize
+ 2;
3155 cmdline_size
= nread
+ 1;
3156 q
= cmdline
= xrealloc (cmdline
, cmdline_size
);
3157 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3158 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3160 /* Command line is encoded in locale-coding-system; decode it. */
3161 cmd_str
= make_unibyte_string (q
, nread
);
3162 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3163 Vlocale_coding_system
, 0);
3164 unbind_to (count
, Qnil
);
3165 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3172 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3174 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3175 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3176 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3177 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3178 #undef _FILE_OFFSET_BITS
3180 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3185 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3186 #define _FILE_OFFSET_BITS 64
3187 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3189 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3192 system_process_attributes (Lisp_Object pid
)
3194 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3199 struct psinfo pinfo
;
3205 Lisp_Object attrs
= Qnil
;
3206 Lisp_Object decoded_cmd
;
3207 struct gcpro gcpro1
, gcpro2
;
3210 CHECK_NUMBER_OR_FLOAT (pid
);
3211 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3212 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3213 if (stat (procfn
, &st
) < 0)
3216 GCPRO2 (attrs
, decoded_cmd
);
3220 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3222 pw
= getpwuid (uid
);
3225 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3228 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3230 gr
= getgrgid (gid
);
3233 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3235 count
= SPECPDL_INDEX ();
3236 strcpy (fn
, procfn
);
3237 procfn_end
= fn
+ strlen (fn
);
3238 strcpy (procfn_end
, "/psinfo");
3239 fd
= emacs_open (fn
, O_RDONLY
, 0);
3244 record_unwind_protect (close_file_unwind
, fd
);
3245 nread
= emacs_read (fd
, &pinfo
, sizeof pinfo
);
3248 if (nread
== sizeof pinfo
)
3250 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3251 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3252 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3256 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3257 state_str
[1] = '\0';
3258 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3261 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3262 need to get a string from it. */
3264 /* FIXME: missing: Qtpgid */
3276 Are they available? */
3278 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3279 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3280 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3281 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3282 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)),
3285 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3286 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)),
3288 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)),
3291 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3292 range 0 .. 2**15, representing 0.0 .. 1.0. */
3293 attrs
= Fcons (Fcons (Qpcpu
,
3294 make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)),
3296 attrs
= Fcons (Fcons (Qpmem
,
3297 make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)),
3300 decoded_cmd
= (code_convert_string_norecord
3301 (build_unibyte_string (pinfo
.pr_fname
),
3302 Vlocale_coding_system
, 0));
3303 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3304 decoded_cmd
= (code_convert_string_norecord
3305 (build_unibyte_string (pinfo
.pr_psargs
),
3306 Vlocale_coding_system
, 0));
3307 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3309 unbind_to (count
, Qnil
);
3314 #elif defined __FreeBSD__
3316 static struct timespec
3317 timeval_to_timespec (struct timeval t
)
3319 return make_timespec (t
.tv_sec
, t
.tv_usec
* 1000);
3323 make_lisp_timeval (struct timeval t
)
3325 return make_lisp_time (timeval_to_timespec (t
));
3329 system_process_attributes (Lisp_Object pid
)
3332 int pagesize
= getpagesize ();
3333 unsigned long npages
;
3339 char args
[MAXPATHLEN
];
3340 struct timespec t
, now
;
3342 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3343 struct kinfo_proc proc
;
3344 size_t proclen
= sizeof proc
;
3346 struct gcpro gcpro1
, gcpro2
;
3347 Lisp_Object attrs
= Qnil
;
3348 Lisp_Object decoded_comm
;
3350 CHECK_NUMBER_OR_FLOAT (pid
);
3351 CONS_TO_INTEGER (pid
, int, proc_id
);
3354 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3357 GCPRO2 (attrs
, decoded_comm
);
3359 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3362 pw
= getpwuid (proc
.ki_uid
);
3365 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3367 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3370 gr
= getgrgid (proc
.ki_svgid
);
3373 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3375 decoded_comm
= (code_convert_string_norecord
3376 (build_unibyte_string (proc
.ki_comm
),
3377 Vlocale_coding_system
, 0));
3379 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3381 char state
[2] = {'\0', '\0'};
3382 switch (proc
.ki_stat
)
3404 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3407 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3408 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3409 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3412 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3415 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3417 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3418 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3419 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3420 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3421 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3423 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3425 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3427 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage
.ru_utime
),
3428 timeval_to_timespec (proc
.ki_rusage
.ru_stime
));
3429 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3431 attrs
= Fcons (Fcons (Qcutime
,
3432 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3434 attrs
= Fcons (Fcons (Qcstime
,
3435 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3437 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage_ch
.ru_utime
),
3438 timeval_to_timespec (proc
.ki_rusage_ch
.ru_stime
));
3439 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3441 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3443 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3444 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3445 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3446 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3447 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3450 now
= current_timespec ();
3451 t
= timespec_sub (now
, timeval_to_timespec (proc
.ki_start
));
3452 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3454 len
= sizeof fscale
;
3455 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3460 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3462 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3463 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3464 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3468 len
= sizeof npages
;
3469 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3471 double pmem
= (proc
.ki_flag
& P_INMEM
3472 ? 100.0 * proc
.ki_rssize
/ npages
3474 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3477 mib
[2] = KERN_PROC_ARGS
;
3479 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3482 for (i
= 0; i
< len
; i
++)
3484 if (! args
[i
] && i
< len
- 1)
3489 (code_convert_string_norecord
3490 (build_unibyte_string (args
),
3491 Vlocale_coding_system
, 0));
3493 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3500 /* The WINDOWSNT implementation is in w32.c.
3501 The MSDOS implementation is in dosfns.c. */
3502 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3505 system_process_attributes (Lisp_Object pid
)
3510 #endif /* !defined (WINDOWSNT) */