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 static void emacs_get_tty (int, struct emacs_tty
*);
109 static int emacs_set_tty (int, struct emacs_tty
*, bool);
111 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
113 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
116 /* Declare here, including term.h is problematic on some systems. */
117 extern void tputs (const char *, int, int (*)(int));
119 static const int baud_convert
[] =
121 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
122 1800, 2400, 4800, 9600, 19200, 38400
126 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
128 /* Return the current working directory. Returns NULL on errors.
129 Any other returned value must be freed with free. This is used
130 only when get_current_dir_name is not defined on the system. */
132 get_current_dir_name (void)
135 char *pwd
= getenv ("PWD");
136 struct stat dotstat
, pwdstat
;
137 /* If PWD is accurate, use it instead of calling getcwd. PWD is
138 sometimes a nicer name, and using it may avoid a fatal error if a
139 parent directory is searchable but not readable. */
141 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
142 && stat (pwd
, &pwdstat
) == 0
143 && stat (".", &dotstat
) == 0
144 && dotstat
.st_ino
== pwdstat
.st_ino
145 && dotstat
.st_dev
== pwdstat
.st_dev
147 && strlen (pwd
) < MAXPATHLEN
151 buf
= malloc (strlen (pwd
) + 1);
158 size_t buf_size
= 1024;
159 buf
= malloc (buf_size
);
164 if (getcwd (buf
, buf_size
) == buf
)
168 int tmp_errno
= errno
;
174 buf
= realloc (buf
, buf_size
);
184 /* Discard pending input on all input descriptors. */
187 discard_tty_input (void)
190 struct emacs_tty buf
;
195 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
196 while (dos_keyread () != -1)
198 #else /* not MSDOS */
200 struct tty_display_info
*tty
;
201 for (tty
= tty_list
; tty
; tty
= tty
->next
)
203 if (tty
->input
) /* Is the device suspended? */
205 emacs_get_tty (fileno (tty
->input
), &buf
);
206 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
210 #endif /* not MSDOS */
211 #endif /* not WINDOWSNT */
217 /* Arrange for character C to be read as the next input from
219 XXX What if we have multiple ttys?
225 if (! (FRAMEP (selected_frame
)
226 && FRAME_LIVE_P (XFRAME (selected_frame
))
227 && FRAME_TERMCAP_P (XFRAME (selected_frame
))))
230 /* Should perhaps error if in batch mode */
232 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
233 #else /* no TIOCSTI */
234 error ("Cannot stuff terminal input characters in this version of Unix");
235 #endif /* no TIOCSTI */
241 init_baud_rate (int fd
)
251 #else /* not DOS_NT */
256 emacs_ospeed
= cfgetospeed (&sg
);
257 #endif /* not DOS_NT */
260 baud_rate
= (emacs_ospeed
< ARRAYELTS (baud_convert
)
261 ? baud_convert
[emacs_ospeed
] : 9600);
270 /* Wait for the subprocess with process id CHILD to terminate or change status.
271 CHILD must be a child process that has not been reaped.
272 If STATUS is non-null, store the waitpid-style exit status into *STATUS
273 and tell wait_reading_process_output that it needs to look around.
274 Use waitpid-style OPTIONS when waiting.
275 If INTERRUPTIBLE, this function is interruptible by a signal.
277 Return CHILD if successful, 0 if no status is available;
278 the latter is possible only when options & NOHANG. */
280 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
284 /* Invoke waitpid only with a known process ID; do not invoke
285 waitpid with a nonpositive argument. Otherwise, Emacs might
286 reap an unwanted process by mistake. For example, invoking
287 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
288 so that another thread running glib won't find them. */
291 while ((pid
= waitpid (child
, status
, options
)) < 0)
293 /* Check that CHILD is a child process that has not been reaped,
294 and that STATUS and OPTIONS are valid. Otherwise abort,
295 as continuing after this internal error could cause Emacs to
296 become confused and kill innocent-victim processes. */
300 /* Note: the MS-Windows emulation of waitpid calls QUIT
306 /* If successful and status is requested, tell wait_reading_process_output
307 that it needs to wake up and look around. */
308 if (pid
&& status
&& input_available_clear_time
)
309 *input_available_clear_time
= make_timespec (0, 0);
314 /* Wait for the subprocess with process id CHILD to terminate.
315 CHILD must be a child process that has not been reaped.
316 If STATUS is non-null, store the waitpid-style exit status into *STATUS
317 and tell wait_reading_process_output that it needs to look around.
318 If INTERRUPTIBLE, this function is interruptible by a signal. */
320 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
322 get_child_status (child
, status
, 0, interruptible
);
325 /* Report whether the subprocess with process id CHILD has changed status.
326 Termination counts as a change of status.
327 CHILD must be a child process that has not been reaped.
328 If STATUS is non-null, store the waitpid-style exit status into *STATUS
329 and tell wait_reading_process_output that it needs to look around.
330 Use waitpid-style OPTIONS to check status, but do not wait.
332 Return CHILD if successful, 0 if no status is available because
333 the process's state has not changed. */
335 child_status_changed (pid_t child
, int *status
, int options
)
337 return get_child_status (child
, status
, WNOHANG
| options
, 0);
341 /* Set up the terminal at the other end of a pseudo-terminal that
342 we will be controlling an inferior through.
343 It should not echo or do line-editing, since that is done
344 in Emacs. No padding needed for insertion into an Emacs buffer. */
347 child_setup_tty (int out
)
352 emacs_get_tty (out
, &s
);
353 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
354 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
356 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
357 Some versions of GNU Hurd do not have FFDLY? */
359 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
360 /* No output delays */
362 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
363 /* No output delays */
366 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
367 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
369 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
372 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
375 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
377 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
378 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
379 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
380 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
383 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
386 #ifdef SIGNALS_VIA_CHARACTERS
387 /* the QUIT and INTR character are used in process_send_signal
388 so set them here to something useful. */
389 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
390 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
391 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
392 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
393 #endif /* not SIGNALS_VIA_CHARACTERS */
396 /* Also, PTY overloads NUL and BREAK.
397 don't ignore break, but don't signal either, so it looks like NUL. */
398 s
.main
.c_iflag
&= ~IGNBRK
;
399 s
.main
.c_iflag
&= ~BRKINT
;
400 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
401 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
402 would force it to 0377. That looks like duplicated code. */
403 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
406 /* We originally enabled ICANON (and set VEOF to 04), and then had
407 process.c send additional EOF chars to flush the output when faced
408 with long lines, but this leads to weird effects when the
409 subprocess has disabled ICANON and ends up seeing those spurious
410 extra EOFs. So we don't send EOFs any more in
411 process.c:send_process. First we tried to disable ICANON by
412 default, so if a subsprocess sets up ICANON, it's his problem (or
413 the Elisp package that talks to it) to deal with lines that are
414 too long. But this disables some features, such as the ability
415 to send EOF signals. So we re-enabled ICANON but there is no
416 more "send eof to flush" going on (which is wrong and unportable
417 in itself). The correct way to handle too much output is to
418 buffer what could not be written and then write it again when
419 select returns ok for writing. This has it own set of
420 problems. Write is now asynchronous, is that a problem? How much
421 do we buffer, and what do we do when that limit is reached? */
423 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
424 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
425 #if 0 /* These settings only apply to non-ICANON mode. */
426 s
.main
.c_cc
[VMIN
] = 1;
427 s
.main
.c_cc
[VTIME
] = 0;
430 emacs_set_tty (out
, &s
, 0);
431 #endif /* not WINDOWSNT */
433 #endif /* not MSDOS */
436 /* Record a signal code and the action for it. */
440 struct sigaction action
;
443 static void save_signal_handlers (struct save_signal
*);
444 static void restore_signal_handlers (struct save_signal
*);
446 /* Suspend the Emacs process; give terminal to its superior. */
454 /* On a system where suspending is not implemented,
455 instead fork a subshell and let it talk directly to the terminal
462 /* Fork a subshell. */
467 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
470 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
472 char oldwd
[MAX_UTF8_PATH
];
477 struct save_signal saved_handlers
[5];
478 char *str
= SSDATA (encode_current_directory ());
484 char *volatile str_volatile
= str
;
491 error ("Can't spawn subshell");
493 saved_handlers
[0].code
= SIGINT
;
494 saved_handlers
[1].code
= SIGQUIT
;
495 saved_handlers
[2].code
= SIGTERM
;
497 saved_handlers
[3].code
= SIGIO
;
498 saved_handlers
[4].code
= 0;
500 saved_handlers
[3].code
= 0;
504 save_signal_handlers (saved_handlers
);
511 #ifdef DOS_NT /* MW, Aug 1993 */
512 getcwd (oldwd
, sizeof oldwd
);
514 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
517 sh
= egetenv ("SHELL");
521 /* Use our buffer's default directory for the subshell. */
522 if (chdir (str
) != 0)
526 _exit (EXIT_CANCELED
);
530 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
532 char *epwd
= getenv ("PWD");
533 char old_pwd
[MAXPATHLEN
+1+4];
535 /* If PWD is set, pass it with corrected value. */
538 strcpy (old_pwd
, epwd
);
539 setenv ("PWD", str
, 1);
542 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
544 putenv (old_pwd
); /* restore previous value */
546 #else /* not MSDOS */
548 /* Waits for process completion */
549 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
550 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
552 write (1, "Can't execute subshell", 22);
553 #else /* not WINDOWSNT */
554 execlp (sh
, sh
, (char *) 0);
556 _exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
557 #endif /* not WINDOWSNT */
558 #endif /* not MSDOS */
561 /* Do this now if we did not do it before. */
563 save_signal_handlers (saved_handlers
);
567 wait_for_termination (pid
, &status
, 0);
569 restore_signal_handlers (saved_handlers
);
573 save_signal_handlers (struct save_signal
*saved_handlers
)
575 while (saved_handlers
->code
)
577 struct sigaction action
;
578 emacs_sigaction_init (&action
, SIG_IGN
);
579 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
585 restore_signal_handlers (struct save_signal
*saved_handlers
)
587 while (saved_handlers
->code
)
589 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
595 static int old_fcntl_flags
[FD_SETSIZE
];
602 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
603 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
604 interrupts_deferred
= 0;
613 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
622 signal (SIGIO
, SIG_IGN
);
630 block_child_signal (sigset_t
*oldset
)
633 sigemptyset (&blocked
);
634 sigaddset (&blocked
, SIGCHLD
);
635 sigaddset (&blocked
, SIGINT
);
636 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
639 /* Unblock SIGCHLD. */
642 unblock_child_signal (sigset_t
const *oldset
)
644 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
649 /* Saving and restoring the process group of Emacs's terminal. */
651 /* The process group of which Emacs was a member when it initially
654 If Emacs was in its own process group (i.e. inherited_pgroup ==
655 getpid ()), then we know we're running under a shell with job
656 control (Emacs would never be run as part of a pipeline).
659 If Emacs was not in its own process group, then we know we're
660 running under a shell (or a caller) that doesn't know how to
661 separate itself from Emacs (like sh). Emacs must be in its own
662 process group in order to receive SIGIO correctly. In this
663 situation, we put ourselves in our own pgroup, forcibly set the
664 tty's pgroup to our pgroup, and make sure to restore and reinstate
665 the tty's pgroup just like any other terminal setting. If
666 inherited_group was not the tty's pgroup, then we'll get a
667 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
668 it goes foreground in the future, which is what should happen. */
670 static pid_t inherited_pgroup
;
673 init_foreground_group (void)
675 pid_t pgrp
= getpgrp ();
676 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
679 /* Block and unblock SIGTTOU. */
682 block_tty_out_signal (sigset_t
*oldset
)
686 sigemptyset (&blocked
);
687 sigaddset (&blocked
, SIGTTOU
);
688 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
693 unblock_tty_out_signal (sigset_t
const *oldset
)
696 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
700 /* Safely set a controlling terminal FD's process group to PGID.
701 If we are not in the foreground already, POSIX requires tcsetpgrp
702 to deliver a SIGTTOU signal, which would stop us. This is an
703 annoyance, so temporarily ignore the signal.
705 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
706 skip all this unless SIGTTOU is defined. */
708 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
713 block_tty_out_signal (&oldset
);
714 tcsetpgrp (fd
, pgid
);
715 unblock_tty_out_signal (&oldset
);
720 /* Split off the foreground process group to Emacs alone. When we are
721 in the foreground, but not started in our own process group,
722 redirect the tty device handle FD to point to our own process
723 group. FD must be the file descriptor of the controlling tty. */
725 narrow_foreground_group (int fd
)
727 if (inherited_pgroup
&& setpgid (0, 0) == 0)
728 tcsetpgrp_without_stopping (fd
, getpid ());
731 /* Set the tty to our original foreground group. */
733 widen_foreground_group (int fd
)
735 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
736 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
739 /* Getting and setting emacs_tty structures. */
741 /* Set *TC to the parameters associated with the terminal FD,
742 or clear it if the parameters are not available. */
744 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
746 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
748 /* We have those nifty POSIX tcmumbleattr functions. */
749 memset (&settings
->main
, 0, sizeof (settings
->main
));
750 tcgetattr (fd
, &settings
->main
);
755 /* Set the parameters of the tty on FD according to the contents of
756 *SETTINGS. If FLUSHP, discard input.
757 Return 0 if all went well, and -1 (setting errno) if anything failed. */
760 emacs_set_tty (int fd
, struct emacs_tty
*settings
, bool flushp
)
762 /* Set the primary parameters - baud rate, character size, etcetera. */
765 /* We have those nifty POSIX tcmumbleattr functions.
766 William J. Smith <wjs@wiis.wang.com> writes:
767 "POSIX 1003.1 defines tcsetattr to return success if it was
768 able to perform any of the requested actions, even if some
769 of the requested actions could not be performed.
770 We must read settings back to ensure tty setup properly.
771 AIX requires this to keep tty from hanging occasionally." */
772 /* This make sure that we don't loop indefinitely in here. */
773 for (i
= 0 ; i
< 10 ; i
++)
774 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
785 memset (&new, 0, sizeof (new));
786 /* Get the current settings, and see if they're what we asked for. */
787 tcgetattr (fd
, &new);
788 /* We cannot use memcmp on the whole structure here because under
789 * aix386 the termios structure has some reserved field that may
792 if ( new.c_iflag
== settings
->main
.c_iflag
793 && new.c_oflag
== settings
->main
.c_oflag
794 && new.c_cflag
== settings
->main
.c_cflag
795 && new.c_lflag
== settings
->main
.c_lflag
796 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
803 /* We have survived the tempest. */
810 static int old_fcntl_owner
[FD_SETSIZE
];
811 #endif /* F_SETOWN */
813 /* This may also be defined in stdio,
814 but if so, this does no harm,
815 and using the same name avoids wasting the other one's space. */
818 unsigned char _sobuf
[BUFSIZ
+8];
823 /* Initialize the terminal mode on all tty devices that are currently
827 init_all_sys_modes (void)
829 struct tty_display_info
*tty
;
830 for (tty
= tty_list
; tty
; tty
= tty
->next
)
831 init_sys_modes (tty
);
834 /* Initialize the terminal mode on the given tty device. */
837 init_sys_modes (struct tty_display_info
*tty_out
)
839 struct emacs_tty tty
;
840 Lisp_Object terminal
;
842 Vtty_erase_char
= Qnil
;
847 if (!tty_out
->output
)
848 return; /* The tty is suspended. */
850 narrow_foreground_group (fileno (tty_out
->input
));
852 if (! tty_out
->old_tty
)
853 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
855 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
857 tty
= *tty_out
->old_tty
;
859 #if !defined (DOS_NT)
860 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
862 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
863 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
864 #ifdef INLCR /* I'm just being cautious,
865 since I can't check how widespread INLCR is--rms. */
866 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
869 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
871 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
872 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
874 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
876 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
877 if (tty_out
->flow_control
)
879 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
881 tty
.main
.c_iflag
&= ~IXANY
;
885 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
886 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
888 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
890 if (tty_out
->meta_key
)
892 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
893 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
897 XSETTERMINAL(terminal
, tty_out
->terminal
);
898 if (!NILP (Fcontrolling_tty_p (terminal
)))
900 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
901 /* Set up C-g for both SIGQUIT and SIGINT.
902 We don't know which we will get, but we handle both alike
903 so which one it really gives us does not matter. */
904 tty
.main
.c_cc
[VQUIT
] = quit_char
;
908 /* We normally don't get interrupt or quit signals from tty
909 devices other than our controlling terminal; therefore,
910 we must handle C-g as normal input. Unfortunately, this
911 means that the interrupt and quit feature must be
912 disabled on secondary ttys, or we would not even see the
915 Note that even though emacsclient could have special code
916 to pass SIGINT to Emacs, we should _not_ enable
917 interrupt/quit keys for emacsclient frames. This means
918 that we can't break out of loops in C code from a
919 secondary tty frame, but we can always decide what
920 display the C-g came from, which is more important from a
921 usability point of view. (Consider the case when two
922 people work together using the same Emacs instance.) */
923 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
924 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
926 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
927 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
929 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
934 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
937 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
939 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
940 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
943 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
946 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
947 #endif /* VREPRINT */
949 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
952 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
953 #endif /* VDISCARD */
955 if (tty_out
->flow_control
)
958 tty
.main
.c_cc
[VSTART
] = '\021';
961 tty
.main
.c_cc
[VSTOP
] = '\023';
967 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
970 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
975 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
976 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
977 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
978 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
979 if (tty_out
->flow_control
)
982 tty
.main
.c_cc
[VSTART
] = '\021';
985 tty
.main
.c_cc
[VSTOP
] = '\023';
988 /* Also, PTY overloads NUL and BREAK.
989 don't ignore break, but don't signal either, so it looks like NUL.
990 This really serves a purpose only if running in an XTERM window
991 or via TELNET or the like, but does no harm elsewhere. */
992 tty
.main
.c_iflag
&= ~IGNBRK
;
993 tty
.main
.c_iflag
&= ~BRKINT
;
995 #endif /* not DOS_NT */
997 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
998 if (!tty_out
->term_initted
)
999 internal_terminal_init ();
1000 dos_ttraw (tty_out
);
1003 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1005 /* This code added to insure that, if flow-control is not to be used,
1006 we have an unlocked terminal at the start. */
1009 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1012 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1015 #if !defined (DOS_NT)
1017 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1022 if (interrupt_input
)
1024 old_fcntl_owner
[fileno (tty_out
->input
)] =
1025 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1026 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1027 init_sigio (fileno (tty_out
->input
));
1029 if (gpm_tty
== tty_out
)
1031 /* Arrange for mouse events to give us SIGIO signals. */
1032 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1033 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1034 init_sigio (gpm_fd
);
1036 #endif /* HAVE_GPM */
1038 #endif /* F_GETOWN */
1041 /* This symbol is defined on recent USG systems.
1042 Someone says without this call USG won't really buffer the file
1043 even with a call to setbuf. */
1044 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1046 setbuf (tty_out
->output
, (char *) _sobuf
);
1049 if (tty_out
->terminal
->set_terminal_modes_hook
)
1050 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1052 if (!tty_out
->term_initted
)
1054 Lisp_Object tail
, frame
;
1055 FOR_EACH_FRAME (tail
, frame
)
1057 /* XXX This needs to be revised. */
1058 if (FRAME_TERMCAP_P (XFRAME (frame
))
1059 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1060 init_frame_faces (XFRAME (frame
));
1064 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1066 /* We used to call "direct_output_forward_char(0)" here,
1067 but it's not clear why, since it may not do anything anyway. */
1071 Lisp_Object tail
, frame
;
1073 FOR_EACH_FRAME (tail
, frame
)
1075 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1076 || FRAME_MSDOS_P (XFRAME (frame
)))
1077 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1078 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1082 tty_out
->term_initted
= 1;
1085 /* Return true if safe to use tabs in output.
1086 At the time this is called, init_sys_modes has not been done yet. */
1089 tabs_safe_p (int fd
)
1091 struct emacs_tty etty
;
1093 emacs_get_tty (fd
, &etty
);
1096 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1097 #else /* not TABDLY */
1099 #endif /* not TABDLY */
1105 /* Get terminal size from system.
1106 Store number of lines into *HEIGHTP and width into *WIDTHP.
1107 We store 0 if there's no valid information. */
1110 get_tty_size (int fd
, int *widthp
, int *heightp
)
1112 #if defined TIOCGWINSZ
1115 struct winsize size
;
1117 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1118 *widthp
= *heightp
= 0;
1121 *widthp
= size
.ws_col
;
1122 *heightp
= size
.ws_row
;
1125 #elif defined TIOCGSIZE
1127 /* SunOS - style. */
1128 struct ttysize size
;
1130 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1131 *widthp
= *heightp
= 0;
1134 *widthp
= size
.ts_cols
;
1135 *heightp
= size
.ts_lines
;
1138 #elif defined WINDOWSNT
1140 CONSOLE_SCREEN_BUFFER_INFO info
;
1141 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1143 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1144 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1147 *widthp
= *heightp
= 0;
1151 *widthp
= ScreenCols ();
1152 *heightp
= ScreenRows ();
1154 #else /* system doesn't know size */
1162 /* Set the logical window size associated with descriptor FD
1163 to HEIGHT and WIDTH. This is used mainly with ptys.
1164 Return a negative value on failure. */
1167 set_window_size (int fd
, int height
, int width
)
1172 struct winsize size
;
1173 size
.ws_row
= height
;
1174 size
.ws_col
= width
;
1176 return ioctl (fd
, TIOCSWINSZ
, &size
);
1181 /* SunOS - style. */
1182 struct ttysize size
;
1183 size
.ts_lines
= height
;
1184 size
.ts_cols
= width
;
1186 return ioctl (fd
, TIOCGSIZE
, &size
);
1189 #endif /* not SunOS-style */
1190 #endif /* not BSD-style */
1195 /* Prepare all terminal devices for exiting Emacs. */
1198 reset_all_sys_modes (void)
1200 struct tty_display_info
*tty
;
1201 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1202 reset_sys_modes (tty
);
1205 /* Prepare the terminal for closing it; move the cursor to the
1206 bottom of the frame, turn off interrupt-driven I/O, etc. */
1209 reset_sys_modes (struct tty_display_info
*tty_out
)
1216 if (!tty_out
->term_initted
)
1219 if (!tty_out
->output
)
1220 return; /* The tty is suspended. */
1222 /* Go to and clear the last line of the terminal. */
1224 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1226 /* Code adapted from tty_clear_end_of_line. */
1227 if (tty_out
->TS_clr_line
)
1229 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1232 { /* have to do it the hard way */
1234 tty_turn_off_insert (tty_out
);
1236 for (i
= cursorX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1238 fputc (' ', tty_out
->output
);
1242 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1243 fflush (tty_out
->output
);
1245 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1246 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1248 /* Avoid possible loss of output when changing terminal modes. */
1249 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1254 if (interrupt_input
)
1256 reset_sigio (fileno (tty_out
->input
));
1257 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1258 old_fcntl_owner
[fileno (tty_out
->input
)]);
1260 #endif /* F_SETOWN */
1261 fcntl (fileno (tty_out
->input
), F_SETFL
,
1262 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1265 if (tty_out
->old_tty
)
1266 while (emacs_set_tty (fileno (tty_out
->input
),
1267 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1270 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1274 widen_foreground_group (fileno (tty_out
->input
));
1279 /* Set up the proper status flags for use of a pty. */
1284 /* I'm told that TOICREMOTE does not mean control chars
1285 "can't be sent" but rather that they don't have
1286 input-editing or signaling effects.
1287 That should be good, because we have other ways
1288 to do those things in Emacs.
1289 However, telnet mode seems not to work on 4.2.
1290 So TIOCREMOTE is turned off now. */
1292 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1293 will hang. In particular, the "timeout" feature (which
1294 causes a read to return if there is no data available)
1295 does this. Also it is known that telnet mode will hang
1296 in such a way that Emacs must be stopped (perhaps this
1297 is the same problem).
1299 If TIOCREMOTE is turned off, then there is a bug in
1300 hp-ux which sometimes loses data. Apparently the
1301 code which blocks the master process when the internal
1302 buffer fills up does not work. Other than this,
1303 though, everything else seems to work fine.
1305 Since the latter lossage is more benign, we may as well
1306 lose that way. -- cph */
1308 #if defined (UNIX98_PTYS)
1311 ioctl (fd
, FIONBIO
, &on
);
1316 #endif /* HAVE_PTYS */
1319 #include <sys/socket.h>
1321 #endif /* HAVE_SOCKETS */
1324 #ifndef HAVE_H_ERRNO
1327 #endif /* TRY_AGAIN */
1330 init_system_name (void)
1332 #ifndef HAVE_GETHOSTNAME
1335 Vsystem_name
= build_string (uts
.nodename
);
1336 #else /* HAVE_GETHOSTNAME */
1337 char *hostname_alloc
= NULL
;
1338 char hostname_buf
[256];
1339 ptrdiff_t hostname_size
= sizeof hostname_buf
;
1340 char *hostname
= hostname_buf
;
1342 /* Try to get the host name; if the buffer is too short, try
1343 again. Apparently, the only indication gethostname gives of
1344 whether the buffer was large enough is the presence or absence
1345 of a '\0' in the string. Eech. */
1348 gethostname (hostname
, hostname_size
- 1);
1349 hostname
[hostname_size
- 1] = '\0';
1351 /* Was the buffer large enough for the '\0'? */
1352 if (strlen (hostname
) < hostname_size
- 1)
1355 hostname
= hostname_alloc
= xpalloc (hostname_alloc
, &hostname_size
, 1,
1356 min (PTRDIFF_MAX
, SIZE_MAX
), 1);
1359 /* Turn the hostname into the official, fully-qualified hostname.
1360 Don't do this if we're going to dump; this can confuse system
1361 libraries on some machines and make the dumped emacs core dump. */
1364 #endif /* not CANNOT_DUMP */
1365 if (! strchr (hostname
, '.'))
1368 #ifdef HAVE_GETADDRINFO
1369 struct addrinfo
*res
;
1370 struct addrinfo hints
;
1373 memset (&hints
, 0, sizeof (hints
));
1374 hints
.ai_socktype
= SOCK_STREAM
;
1375 hints
.ai_flags
= AI_CANONNAME
;
1377 for (count
= 0;; count
++)
1379 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1380 || ret
!= EAI_AGAIN
)
1385 Fsleep_for (make_number (1), Qnil
);
1390 struct addrinfo
*it
= res
;
1393 char *fqdn
= it
->ai_canonname
;
1394 if (fqdn
&& strchr (fqdn
, '.')
1395 && strcmp (fqdn
, "localhost.localdomain") != 0)
1401 ptrdiff_t len
= strlen (it
->ai_canonname
);
1402 if (hostname_size
<= len
)
1404 hostname_size
= len
+ 1;
1405 hostname
= hostname_alloc
= xrealloc (hostname_alloc
,
1408 strcpy (hostname
, it
->ai_canonname
);
1412 #else /* !HAVE_GETADDRINFO */
1414 for (count
= 0;; count
++)
1420 hp
= gethostbyname (hostname
);
1422 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1429 Fsleep_for (make_number (1), Qnil
);
1434 char *fqdn
= (char *) hp
->h_name
;
1436 if (!strchr (fqdn
, '.'))
1438 /* We still don't have a fully qualified domain name.
1439 Try to find one in the list of alternate names */
1440 char **alias
= hp
->h_aliases
;
1442 && (!strchr (*alias
, '.')
1443 || !strcmp (*alias
, "localhost.localdomain")))
1450 #endif /* !HAVE_GETADDRINFO */
1452 #endif /* HAVE_SOCKETS */
1453 Vsystem_name
= build_string (hostname
);
1454 xfree (hostname_alloc
);
1455 #endif /* HAVE_GETHOSTNAME */
1458 for (p
= SSDATA (Vsystem_name
); *p
; p
++)
1459 if (*p
== ' ' || *p
== '\t')
1464 sigset_t empty_mask
;
1466 static struct sigaction process_fatal_action
;
1469 emacs_sigaction_flags (void)
1472 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1473 'select') to reset their timeout on some platforms (e.g.,
1474 HP-UX 11), which is not what we want. Also, when Emacs is
1475 interactive, we don't want SA_RESTART because we need to poll
1476 for pending input so we need long-running syscalls to be interrupted
1477 after a signal that sets pending_signals.
1479 Non-interactive keyboard input goes through stdio, where we
1480 always want restartable system calls. */
1487 /* Store into *ACTION a signal action suitable for Emacs, with handler
1490 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1492 sigemptyset (&action
->sa_mask
);
1494 /* When handling a signal, block nonfatal system signals that are caught
1495 by Emacs. This makes race conditions less likely. */
1496 sigaddset (&action
->sa_mask
, SIGALRM
);
1498 sigaddset (&action
->sa_mask
, SIGCHLD
);
1501 sigaddset (&action
->sa_mask
, SIGDANGER
);
1503 #ifdef PROFILER_CPU_SUPPORT
1504 sigaddset (&action
->sa_mask
, SIGPROF
);
1507 sigaddset (&action
->sa_mask
, SIGWINCH
);
1509 if (! noninteractive
)
1511 sigaddset (&action
->sa_mask
, SIGINT
);
1512 sigaddset (&action
->sa_mask
, SIGQUIT
);
1514 sigaddset (&action
->sa_mask
, SIGIO
);
1518 action
->sa_handler
= handler
;
1519 action
->sa_flags
= emacs_sigaction_flags ();
1522 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1523 static pthread_t main_thread
;
1526 /* SIG has arrived at the current process. Deliver it to the main
1527 thread, which should handle it with HANDLER.
1529 If we are on the main thread, handle the signal SIG with HANDLER.
1530 Otherwise, redirect the signal to the main thread, blocking it from
1531 this thread. POSIX says any thread can receive a signal that is
1532 associated with a process, process group, or asynchronous event.
1533 On GNU/Linux that is not true, but for other systems (FreeBSD at
1536 deliver_process_signal (int sig
, signal_handler_t handler
)
1538 /* Preserve errno, to avoid race conditions with signal handlers that
1539 might change errno. Races can occur even in single-threaded hosts. */
1540 int old_errno
= errno
;
1542 bool on_main_thread
= true;
1543 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1544 if (! pthread_equal (pthread_self (), main_thread
))
1547 sigemptyset (&blocked
);
1548 sigaddset (&blocked
, sig
);
1549 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1550 pthread_kill (main_thread
, sig
);
1551 on_main_thread
= false;
1560 /* Static location to save a fatal backtrace in a thread.
1561 FIXME: If two subsidiary threads fail simultaneously, the resulting
1562 backtrace may be garbage. */
1563 enum { BACKTRACE_LIMIT_MAX
= 500 };
1564 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1565 static int thread_backtrace_npointers
;
1567 /* SIG has arrived at the current thread.
1568 If we are on the main thread, handle the signal SIG with HANDLER.
1569 Otherwise, this is a fatal error in the handling thread. */
1571 deliver_thread_signal (int sig
, signal_handler_t handler
)
1573 int old_errno
= errno
;
1575 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1576 if (! pthread_equal (pthread_self (), main_thread
))
1578 thread_backtrace_npointers
1579 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1580 sigaction (sig
, &process_fatal_action
, 0);
1581 pthread_kill (main_thread
, sig
);
1583 /* Avoid further damage while the main thread is exiting. */
1585 sigsuspend (&empty_mask
);
1593 #if !HAVE_DECL_SYS_SIGLIST
1595 # ifdef _sys_siglist
1596 # define sys_siglist _sys_siglist
1597 # elif HAVE_DECL___SYS_SIGLIST
1598 # define sys_siglist __sys_siglist
1600 # define sys_siglist my_sys_siglist
1601 static char const *sys_siglist
[NSIG
];
1606 # define sys_siglist_entries _sys_nsig
1608 # define sys_siglist_entries NSIG
1611 /* Handle bus errors, invalid instruction, etc. */
1613 handle_fatal_signal (int sig
)
1615 terminate_due_to_signal (sig
, 40);
1619 deliver_fatal_signal (int sig
)
1621 deliver_process_signal (sig
, handle_fatal_signal
);
1625 deliver_fatal_thread_signal (int sig
)
1627 deliver_thread_signal (sig
, handle_fatal_signal
);
1630 static _Noreturn
void
1631 handle_arith_signal (int sig
)
1633 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1634 xsignal0 (Qarith_error
);
1638 deliver_arith_signal (int sig
)
1640 deliver_thread_signal (sig
, handle_arith_signal
);
1645 /* Handler for SIGDANGER. */
1647 handle_danger_signal (int sig
)
1649 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1651 /* It might be unsafe to call do_auto_save now. */
1652 force_auto_save_soon ();
1656 deliver_danger_signal (int sig
)
1658 deliver_process_signal (sig
, handle_danger_signal
);
1662 /* Treat SIG as a terminating signal, unless it is already ignored and
1663 we are in --batch mode. Among other things, this makes nohup work. */
1665 maybe_fatal_sig (int sig
)
1667 bool catch_sig
= !noninteractive
;
1670 struct sigaction old_action
;
1671 sigaction (sig
, 0, &old_action
);
1672 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1675 sigaction (sig
, &process_fatal_action
, 0);
1679 init_signals (bool dumping
)
1681 struct sigaction thread_fatal_action
;
1682 struct sigaction action
;
1684 sigemptyset (&empty_mask
);
1686 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1687 main_thread
= pthread_self ();
1690 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1693 sys_siglist
[SIGABRT
] = "Aborted";
1695 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1697 sys_siglist
[SIGALRM
] = "Alarm clock";
1699 sys_siglist
[SIGBUS
] = "Bus error";
1702 sys_siglist
[SIGCHLD
] = "Child status changed";
1705 sys_siglist
[SIGCONT
] = "Continued";
1708 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1711 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1714 sys_siglist
[SIGEMT
] = "Emulation trap";
1716 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1718 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1721 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1723 sys_siglist
[SIGHUP
] = "Hangup";
1724 sys_siglist
[SIGILL
] = "Illegal instruction";
1725 sys_siglist
[SIGINT
] = "Interrupt";
1727 sys_siglist
[SIGIO
] = "I/O possible";
1730 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1733 sys_siglist
[SIGIOT
] = "IOT trap";
1735 sys_siglist
[SIGKILL
] = "Killed";
1737 sys_siglist
[SIGLOST
] = "Resource lost";
1740 sys_siglist
[SIGLWP
] = "SIGLWP";
1743 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1746 sys_siglist
[SIGWIND
] = "SIGPHONE";
1748 sys_siglist
[SIGPIPE
] = "Broken pipe";
1750 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1753 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1756 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1759 sys_siglist
[SIGPWR
] = "Power-fail restart";
1761 sys_siglist
[SIGQUIT
] = "Quit";
1763 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1766 sys_siglist
[SIGSAK
] = "Secure attention";
1768 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1770 sys_siglist
[SIGSOUND
] = "Sound completed";
1773 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1776 sys_siglist
[SIGSTP
] = "Stopped (user)";
1779 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1781 sys_siglist
[SIGTERM
] = "Terminated";
1783 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1786 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1789 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1792 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1795 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1798 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1801 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1804 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1807 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1810 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1813 sys_siglist
[SIGWINCH
] = "Window size changed";
1816 sys_siglist
[SIGWIND
] = "SIGWIND";
1819 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1822 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1825 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1827 /* Don't alter signal handlers if dumping. On some machines,
1828 changing signal handlers sets static data that would make signals
1829 fail to work right when the dumped Emacs is run. */
1833 sigfillset (&process_fatal_action
.sa_mask
);
1834 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1835 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1837 sigfillset (&thread_fatal_action
.sa_mask
);
1838 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1839 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1841 /* SIGINT may need special treatment on MS-Windows. See
1842 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1843 Please update the doc of kill-emacs, kill-emacs-hook, and
1844 NEWS if you change this. */
1846 maybe_fatal_sig (SIGHUP
);
1847 maybe_fatal_sig (SIGINT
);
1848 maybe_fatal_sig (SIGTERM
);
1850 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1851 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1852 to behave more like typical batch applications do. */
1853 if (! noninteractive
)
1854 signal (SIGPIPE
, SIG_IGN
);
1856 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1857 sigaction (SIGILL
, &thread_fatal_action
, 0);
1858 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1860 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1861 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1862 interpreter's floating point operations, so treat SIGFPE as an
1863 arith-error if it arises in the main thread. */
1864 if (IEEE_FLOATING_POINT
)
1865 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1868 emacs_sigaction_init (&action
, deliver_arith_signal
);
1869 sigaction (SIGFPE
, &action
, 0);
1873 add_user_signal (SIGUSR1
, "sigusr1");
1876 add_user_signal (SIGUSR2
, "sigusr2");
1878 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1880 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1883 sigaction (SIGORE
, &thread_fatal_action
, 0);
1886 sigaction (SIGUME
, &thread_fatal_action
, 0);
1889 sigaction (SIGDLK
, &process_fatal_action
, 0);
1892 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1895 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1898 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1901 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1903 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1905 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1907 sigaction (SIGTERM
, &process_fatal_action
, 0);
1909 signal (SIGPROF
, SIG_IGN
);
1912 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1915 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1919 /* This just means available memory is getting low. */
1920 emacs_sigaction_init (&action
, deliver_danger_signal
);
1921 sigaction (SIGDANGER
, &action
, 0);
1924 /* AIX-specific signals. */
1926 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1929 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1932 sigaction (SIGMSG
, &process_fatal_action
, 0);
1935 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1938 sigaction (SIGSAK
, &process_fatal_action
, 0);
1941 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1944 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1954 /* Figure out how many bits the system's random number generator uses.
1955 `random' and `lrand48' are assumed to return 31 usable bits.
1956 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1957 so we'll shift it and treat it like the 15-bit USG `rand'. */
1961 # define RAND_BITS 31
1962 # else /* !HAVE_RANDOM */
1963 # ifdef HAVE_LRAND48
1964 # define RAND_BITS 31
1965 # define random lrand48
1966 # else /* !HAVE_LRAND48 */
1967 # define RAND_BITS 15
1968 # if RAND_MAX == 32767
1969 # define random rand
1970 # else /* RAND_MAX != 32767 */
1971 # if RAND_MAX == 2147483647
1972 # define random() (rand () >> 16)
1973 # else /* RAND_MAX != 2147483647 */
1975 # define random rand
1977 # define random() (rand () >> 16)
1979 # endif /* RAND_MAX != 2147483647 */
1980 # endif /* RAND_MAX != 32767 */
1981 # endif /* !HAVE_LRAND48 */
1982 # endif /* !HAVE_RANDOM */
1983 #endif /* !RAND_BITS */
1986 seed_random (void *seed
, ptrdiff_t seed_size
)
1988 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
1989 unsigned int arg
= 0;
1993 unsigned char *argp
= (unsigned char *) &arg
;
1994 unsigned char *seedp
= seed
;
1996 for (i
= 0; i
< seed_size
; i
++)
1997 argp
[i
% sizeof arg
] ^= seedp
[i
];
2001 # ifdef HAVE_LRAND48
2012 struct timespec t
= current_timespec ();
2013 uintmax_t v
= getpid () ^ t
.tv_sec
^ t
.tv_nsec
;
2014 seed_random (&v
, sizeof v
);
2018 * Return a nonnegative random integer out of whatever we've got.
2019 * It contains enough bits to make a random (signed) Emacs fixnum.
2020 * This suffices even for a 64-bit architecture with a 15-bit rand.
2027 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2028 val
= (random () ^ (val
<< RAND_BITS
)
2029 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2030 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2031 return val
& INTMASK
;
2034 #ifndef HAVE_SNPRINTF
2035 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2037 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2039 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2040 ptrdiff_t nbytes
= size
- 1;
2045 va_start (ap
, format
);
2046 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2050 if (nbytes
== size
- 1)
2052 /* Calculate the length of the string that would have been created
2053 had the buffer been large enough. */
2054 char stackbuf
[4000];
2056 ptrdiff_t bsize
= sizeof stackbuf
;
2057 va_start (ap
, format
);
2058 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2064 if (INT_MAX
< nbytes
)
2077 /* If a backtrace is available, output the top lines of it to stderr.
2078 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2079 This function may be called from a signal handler, so it should
2080 not invoke async-unsafe functions like malloc. */
2082 emacs_backtrace (int backtrace_limit
)
2084 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2085 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2089 if (thread_backtrace_npointers
)
2091 buffer
= thread_backtrace_buffer
;
2092 npointers
= thread_backtrace_npointers
;
2096 buffer
= main_backtrace_buffer
;
2097 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2102 emacs_write (STDERR_FILENO
, "\nBacktrace:\n", 12);
2103 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2104 if (bounded_limit
< npointers
)
2105 emacs_write (STDERR_FILENO
, "...\n", 4);
2113 terminate_due_to_signal (SIGABRT
, 40);
2117 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2118 Arrange for subprograms to not inherit the file descriptor.
2119 Prefer a method that is multithread-safe, if available.
2120 Do not fail merely because the open was interrupted by a signal.
2121 Allow the user to quit. */
2124 emacs_open (const char *file
, int oflags
, int mode
)
2127 oflags
|= O_CLOEXEC
;
2128 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2130 if (! O_CLOEXEC
&& 0 <= fd
)
2131 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2135 /* Open FILE as a stream for Emacs use, with mode MODE.
2136 Act like emacs_open with respect to threads, signals, and quits. */
2139 emacs_fopen (char const *file
, char const *mode
)
2141 int fd
, omode
, oflags
;
2143 char const *m
= mode
;
2147 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2148 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2149 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2150 default: emacs_abort ();
2156 case '+': omode
= O_RDWR
; break;
2157 case 'b': bflag
= O_BINARY
; break;
2158 case 't': bflag
= O_TEXT
; break;
2159 default: /* Ignore. */ break;
2162 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2163 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2166 /* Create a pipe for Emacs use. */
2169 emacs_pipe (int fd
[2])
2174 int result
= pipe2 (fd
, O_CLOEXEC
);
2175 if (! O_CLOEXEC
&& result
== 0)
2177 fcntl (fd
[0], F_SETFD
, FD_CLOEXEC
);
2178 fcntl (fd
[1], F_SETFD
, FD_CLOEXEC
);
2184 /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs.
2185 For the background behind this mess, please see Austin Group defect 529
2186 <http://austingroupbugs.net/view.php?id=529>. */
2188 #ifndef POSIX_CLOSE_RESTART
2189 # define POSIX_CLOSE_RESTART 1
2191 posix_close (int fd
, int flag
)
2193 /* Only the POSIX_CLOSE_RESTART case is emulated. */
2194 eassert (flag
== POSIX_CLOSE_RESTART
);
2196 /* Things are tricky if close (fd) returns -1 with errno == EINTR
2197 on a system that does not define POSIX_CLOSE_RESTART.
2199 In this case, in some systems (e.g., GNU/Linux, AIX) FD is
2200 closed, and retrying the close could inadvertently close a file
2201 descriptor allocated by some other thread. In other systems
2202 (e.g., HP/UX) FD is not closed. And in still other systems
2203 (e.g., OS X, Solaris), maybe FD is closed, maybe not, and in a
2204 multithreaded program there can be no way to tell.
2206 So, in this case, pretend that the close succeeded. This works
2207 well on systems like GNU/Linux that close FD. Although it may
2208 leak a file descriptor on other systems, the leak is unlikely and
2209 it's better to leak than to close a random victim. */
2210 return close (fd
) == 0 || errno
== EINTR
? 0 : -1;
2214 /* Close FD, retrying if interrupted. If successful, return 0;
2215 otherwise, return -1 and set errno to a non-EINTR value. Consider
2216 an EINPROGRESS error to be successful, as that's merely a signal
2217 arriving. FD is always closed when this function returns, even
2220 Do not call this function if FD is nonnegative and might already be closed,
2221 as that might close an innocent victim opened by some other thread. */
2224 emacs_close (int fd
)
2228 int r
= posix_close (fd
, POSIX_CLOSE_RESTART
);
2231 if (!POSIX_CLOSE_RESTART
|| errno
!= EINTR
)
2233 eassert (errno
!= EBADF
|| fd
< 0);
2234 return errno
== EINPROGRESS
? 0 : r
;
2239 /* Maximum number of bytes to read or write in a single system call.
2240 This works around a serious bug in Linux kernels before 2.6.16; see
2241 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2242 It's likely to work around similar bugs in other operating systems, so do it
2243 on all platforms. Round INT_MAX down to a page size, with the conservative
2244 assumption that page sizes are at most 2**18 bytes (any kernel with a
2245 page size larger than that shouldn't have the bug). */
2246 #ifndef MAX_RW_COUNT
2247 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2250 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2251 Return the number of bytes read, which might be less than NBYTE.
2252 On error, set errno and return -1. */
2254 emacs_read (int fildes
, void *buf
, ptrdiff_t nbyte
)
2258 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2259 passes a size that large to emacs_read. */
2261 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2262 && (errno
== EINTR
))
2267 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2268 or if a partial write occurs. If interrupted, process pending
2269 signals if PROCESS SIGNALS. Return the number of bytes written, setting
2270 errno if this is less than NBYTE. */
2272 emacs_full_write (int fildes
, char const *buf
, ptrdiff_t nbyte
,
2273 bool process_signals
)
2275 ptrdiff_t bytes_written
= 0;
2279 ssize_t n
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2285 /* I originally used `QUIT' but that might causes files to
2286 be truncated if you hit C-g in the middle of it. --Stef */
2287 if (process_signals
&& pending_signals
)
2288 process_pending_signals ();
2300 return bytes_written
;
2303 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if
2304 interrupted or if a partial write occurs. Return the number of
2305 bytes written, setting errno if this is less than NBYTE. */
2307 emacs_write (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2309 return emacs_full_write (fildes
, buf
, nbyte
, 0);
2312 /* Like emacs_write, but also process pending signals if interrupted. */
2314 emacs_write_sig (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2316 return emacs_full_write (fildes
, buf
, nbyte
, 1);
2319 /* Write a diagnostic to standard error that contains MESSAGE and a
2320 string derived from errno. Preserve errno. Do not buffer stderr.
2321 Do not process pending signals if interrupted. */
2323 emacs_perror (char const *message
)
2326 char const *error_string
= strerror (err
);
2327 char const *command
= (initial_argv
&& initial_argv
[0]
2328 ? initial_argv
[0] : "emacs");
2329 /* Write it out all at once, if it's short; this is less likely to
2330 be interleaved with other output. */
2332 int nbytes
= snprintf (buf
, sizeof buf
, "%s: %s: %s\n",
2333 command
, message
, error_string
);
2334 if (0 <= nbytes
&& nbytes
< BUFSIZ
)
2335 emacs_write (STDERR_FILENO
, buf
, nbytes
);
2338 emacs_write (STDERR_FILENO
, command
, strlen (command
));
2339 emacs_write (STDERR_FILENO
, ": ", 2);
2340 emacs_write (STDERR_FILENO
, message
, strlen (message
));
2341 emacs_write (STDERR_FILENO
, ": ", 2);
2342 emacs_write (STDERR_FILENO
, error_string
, strlen (error_string
));
2343 emacs_write (STDERR_FILENO
, "\n", 1);
2348 /* Return a struct timeval that is roughly equivalent to T.
2349 Use the least timeval not less than T.
2350 Return an extremal value if the result would overflow. */
2352 make_timeval (struct timespec t
)
2355 tv
.tv_sec
= t
.tv_sec
;
2356 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2358 if (t
.tv_nsec
% 1000 != 0)
2360 if (tv
.tv_usec
< 999999)
2362 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2372 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2373 ATIME and MTIME, respectively.
2374 FD must be either negative -- in which case it is ignored --
2375 or a file descriptor that is open on FILE.
2376 If FD is nonnegative, then FILE can be NULL. */
2378 set_file_times (int fd
, const char *filename
,
2379 struct timespec atime
, struct timespec mtime
)
2381 struct timespec timespec
[2];
2382 timespec
[0] = atime
;
2383 timespec
[1] = mtime
;
2384 return fdutimens (fd
, filename
, timespec
);
2387 /* Like strsignal, except async-signal-safe, and this function typically
2388 returns a string in the C locale rather than the current locale. */
2390 safe_strsignal (int code
)
2392 char const *signame
= 0;
2394 if (0 <= code
&& code
< sys_siglist_entries
)
2395 signame
= sys_siglist
[code
];
2397 signame
= "Unknown signal";
2403 /* For make-serial-process */
2405 serial_open (Lisp_Object port
)
2407 int fd
= emacs_open (SSDATA (port
), O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2409 report_file_error ("Opening serial port", port
);
2411 ioctl (fd
, TIOCEXCL
, (char *) 0);
2417 #if !defined (HAVE_CFMAKERAW)
2418 /* Workaround for targets which are missing cfmakeraw. */
2419 /* Pasted from man page. */
2421 cfmakeraw (struct termios
*termios_p
)
2423 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2424 termios_p
->c_oflag
&= ~OPOST
;
2425 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2426 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2427 termios_p
->c_cflag
|= CS8
;
2429 #endif /* !defined (HAVE_CFMAKERAW */
2431 #if !defined (HAVE_CFSETSPEED)
2432 /* Workaround for targets which are missing cfsetspeed. */
2434 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2436 return (cfsetispeed (termios_p
, vitesse
)
2437 + cfsetospeed (termios_p
, vitesse
));
2441 /* For serial-process-configure */
2443 serial_configure (struct Lisp_Process
*p
,
2444 Lisp_Object contact
)
2446 Lisp_Object childp2
= Qnil
;
2447 Lisp_Object tem
= Qnil
;
2448 struct termios attr
;
2450 char summary
[4] = "???"; /* This usually becomes "8N1". */
2452 childp2
= Fcopy_sequence (p
->childp
);
2454 /* Read port attributes and prepare default configuration. */
2455 err
= tcgetattr (p
->outfd
, &attr
);
2457 report_file_error ("Failed tcgetattr", Qnil
);
2459 #if defined (CLOCAL)
2460 attr
.c_cflag
|= CLOCAL
;
2463 attr
.c_cflag
|= CREAD
;
2466 /* Configure speed. */
2467 if (!NILP (Fplist_member (contact
, QCspeed
)))
2468 tem
= Fplist_get (contact
, QCspeed
);
2470 tem
= Fplist_get (p
->childp
, QCspeed
);
2472 err
= cfsetspeed (&attr
, XINT (tem
));
2474 report_file_error ("Failed cfsetspeed", tem
);
2475 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2477 /* Configure bytesize. */
2478 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2479 tem
= Fplist_get (contact
, QCbytesize
);
2481 tem
= Fplist_get (p
->childp
, QCbytesize
);
2483 tem
= make_number (8);
2485 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2486 error (":bytesize must be nil (8), 7, or 8");
2487 summary
[0] = XINT (tem
) + '0';
2488 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2489 attr
.c_cflag
&= ~CSIZE
;
2490 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2492 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2493 if (XINT (tem
) != 8)
2494 error ("Bytesize cannot be changed");
2496 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2498 /* Configure parity. */
2499 if (!NILP (Fplist_member (contact
, QCparity
)))
2500 tem
= Fplist_get (contact
, QCparity
);
2502 tem
= Fplist_get (p
->childp
, QCparity
);
2503 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2504 error (":parity must be nil (no parity), `even', or `odd'");
2505 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2506 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2507 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2512 else if (EQ (tem
, Qeven
))
2515 attr
.c_cflag
|= PARENB
;
2516 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2518 else if (EQ (tem
, Qodd
))
2521 attr
.c_cflag
|= (PARENB
| PARODD
);
2522 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2525 /* Don't error on no parity, which should be set by cfmakeraw. */
2527 error ("Parity cannot be configured");
2529 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2531 /* Configure stopbits. */
2532 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2533 tem
= Fplist_get (contact
, QCstopbits
);
2535 tem
= Fplist_get (p
->childp
, QCstopbits
);
2537 tem
= make_number (1);
2539 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2540 error (":stopbits must be nil (1 stopbit), 1, or 2");
2541 summary
[2] = XINT (tem
) + '0';
2542 #if defined (CSTOPB)
2543 attr
.c_cflag
&= ~CSTOPB
;
2544 if (XINT (tem
) == 2)
2545 attr
.c_cflag
|= CSTOPB
;
2547 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2548 if (XINT (tem
) != 1)
2549 error ("Stopbits cannot be configured");
2551 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2553 /* Configure flowcontrol. */
2554 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2555 tem
= Fplist_get (contact
, QCflowcontrol
);
2557 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2558 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2559 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2560 #if defined (CRTSCTS)
2561 attr
.c_cflag
&= ~CRTSCTS
;
2563 #if defined (CNEW_RTSCTS)
2564 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2566 #if defined (IXON) && defined (IXOFF)
2567 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2571 /* Already configured. */
2573 else if (EQ (tem
, Qhw
))
2575 #if defined (CRTSCTS)
2576 attr
.c_cflag
|= CRTSCTS
;
2577 #elif defined (CNEW_RTSCTS)
2578 attr
.c_cflag
|= CNEW_RTSCTS
;
2580 error ("Hardware flowcontrol (RTS/CTS) not supported");
2583 else if (EQ (tem
, Qsw
))
2585 #if defined (IXON) && defined (IXOFF)
2586 attr
.c_iflag
|= (IXON
| IXOFF
);
2588 error ("Software flowcontrol (XON/XOFF) not supported");
2591 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2593 /* Activate configuration. */
2594 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2596 report_file_error ("Failed tcsetattr", Qnil
);
2598 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2599 pset_childp (p
, childp2
);
2601 #endif /* not DOS_NT */
2603 /* System depended enumeration of and access to system processes a-la ps(1). */
2607 /* Process enumeration and access via /proc. */
2610 list_system_processes (void)
2612 Lisp_Object procdir
, match
, proclist
, next
;
2613 struct gcpro gcpro1
, gcpro2
;
2614 register Lisp_Object tail
;
2616 GCPRO2 (procdir
, match
);
2617 /* For every process on the system, there's a directory in the
2618 "/proc" pseudo-directory whose name is the numeric ID of that
2620 procdir
= build_string ("/proc");
2621 match
= build_string ("[0-9]+");
2622 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2624 /* `proclist' gives process IDs as strings. Destructively convert
2625 each string into a number. */
2626 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2629 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2633 /* directory_files_internal returns the files in reverse order; undo
2635 proclist
= Fnreverse (proclist
);
2639 #elif defined DARWIN_OS || defined __FreeBSD__
2642 list_system_processes (void)
2645 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2647 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2650 struct kinfo_proc
*procs
;
2653 struct gcpro gcpro1
;
2654 Lisp_Object proclist
= Qnil
;
2656 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2659 procs
= xmalloc (len
);
2660 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2667 len
/= sizeof (struct kinfo_proc
);
2668 for (i
= 0; i
< len
; i
++)
2671 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2673 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2683 /* The WINDOWSNT implementation is in w32.c.
2684 The MSDOS implementation is in dosfns.c. */
2685 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2688 list_system_processes (void)
2693 #endif /* !defined (WINDOWSNT) */
2695 #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT
2696 static struct timespec
2697 time_from_jiffies (unsigned long long tval
, long hz
)
2699 unsigned long long s
= tval
/ hz
;
2700 unsigned long long frac
= tval
% hz
;
2703 if (TYPE_MAXIMUM (time_t) < s
)
2705 if (LONG_MAX
- 1 <= ULLONG_MAX
/ TIMESPEC_RESOLUTION
2706 || frac
<= ULLONG_MAX
/ TIMESPEC_RESOLUTION
)
2707 ns
= frac
* TIMESPEC_RESOLUTION
/ hz
;
2710 /* This is reachable only in the unlikely case that HZ * HZ
2711 exceeds ULLONG_MAX. It calculates an approximation that is
2712 guaranteed to be in range. */
2713 long hz_per_ns
= (hz
/ TIMESPEC_RESOLUTION
2714 + (hz
% TIMESPEC_RESOLUTION
!= 0));
2715 ns
= frac
/ hz_per_ns
;
2718 return make_timespec (s
, ns
);
2722 ltime_from_jiffies (unsigned long long tval
, long hz
)
2724 struct timespec t
= time_from_jiffies (tval
, hz
);
2725 return make_lisp_time (t
);
2728 static struct timespec
2732 struct timespec up
= make_timespec (0, 0);
2735 fup
= emacs_fopen ("/proc/uptime", "r");
2739 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2740 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2742 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2743 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2744 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2747 if (TYPE_MAXIMUM (time_t) < upsec
)
2749 upsec
= TYPE_MAXIMUM (time_t);
2750 upfrac
= TIMESPEC_RESOLUTION
- 1;
2754 int upfraclen
= upfrac_end
- upfrac_start
;
2755 for (; upfraclen
< LOG10_TIMESPEC_RESOLUTION
; upfraclen
++)
2757 for (; LOG10_TIMESPEC_RESOLUTION
< upfraclen
; upfraclen
--)
2759 upfrac
= min (upfrac
, TIMESPEC_RESOLUTION
- 1);
2761 up
= make_timespec (upsec
, upfrac
);
2770 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2771 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2774 procfs_ttyname (int rdev
)
2777 char name
[PATH_MAX
];
2780 fdev
= emacs_fopen ("/proc/tty/drivers", "r");
2786 unsigned long minor_beg
, minor_end
;
2787 char minor
[25]; /* 2 32-bit numbers + dash */
2790 for (; !feof (fdev
) && !ferror (fdev
); name
[0] = 0)
2792 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2793 && major
== MAJOR (rdev
))
2795 minor_beg
= strtoul (minor
, &endp
, 0);
2797 minor_end
= minor_beg
;
2798 else if (*endp
== '-')
2799 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2803 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2805 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2813 return build_string (name
);
2817 procfs_get_total_memory (void)
2820 uintmax_t retval
= 2 * 1024 * 1024; /* default: 2 GiB */
2824 fmem
= emacs_fopen ("/proc/meminfo", "r");
2828 uintmax_t entry_value
;
2832 switch (fscanf (fmem
, "MemTotal: %"SCNuMAX
, &entry_value
))
2835 retval
= entry_value
;
2840 while ((c
= getc (fmem
)) != EOF
&& c
!= '\n')
2858 system_process_attributes (Lisp_Object pid
)
2860 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2864 long clocks_per_sec
;
2866 char procbuf
[1025], *p
, *q
;
2869 static char const default_cmd
[] = "???";
2870 const char *cmd
= default_cmd
;
2871 int cmdsize
= sizeof default_cmd
- 1;
2872 char *cmdline
= NULL
;
2873 ptrdiff_t cmdline_size
;
2876 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2879 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2880 long priority
, niceness
, rss
;
2881 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2882 struct timespec tnow
, tstart
, tboot
, telapsed
, us_time
;
2884 Lisp_Object attrs
= Qnil
;
2885 Lisp_Object cmd_str
, decoded_cmd
;
2887 struct gcpro gcpro1
, gcpro2
;
2889 CHECK_NUMBER_OR_FLOAT (pid
);
2890 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2891 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2892 if (stat (procfn
, &st
) < 0)
2895 GCPRO2 (attrs
, decoded_cmd
);
2899 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2901 pw
= getpwuid (uid
);
2904 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2907 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2909 gr
= getgrgid (gid
);
2912 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2915 strcpy (fn
, procfn
);
2916 procfn_end
= fn
+ strlen (fn
);
2917 strcpy (procfn_end
, "/stat");
2918 fd
= emacs_open (fn
, O_RDONLY
, 0);
2923 record_unwind_protect_int (close_file_unwind
, fd
);
2924 nread
= emacs_read (fd
, procbuf
, sizeof procbuf
- 1);
2928 procbuf
[nread
] = '\0';
2931 p
= strchr (p
, '(');
2934 q
= strrchr (p
+ 1, ')');
2944 /* Command name is encoded in locale-coding-system; decode it. */
2945 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2946 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2947 Vlocale_coding_system
, 0);
2948 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2950 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt
2951 utime stime cutime cstime priority nice thcount . start vsize rss */
2953 && (sscanf (q
+ 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu "
2954 "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"),
2955 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2956 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2957 &u_time
, &s_time
, &cutime
, &cstime
,
2958 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
)
2963 state_str
[1] = '\0';
2964 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
2965 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid
)), attrs
);
2966 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp
)), attrs
);
2967 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess
)), attrs
);
2968 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2969 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid
)), attrs
);
2970 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2971 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2972 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)),
2974 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)),
2976 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2977 if (clocks_per_sec
< 0)
2978 clocks_per_sec
= 100;
2979 attrs
= Fcons (Fcons (Qutime
,
2980 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2982 attrs
= Fcons (Fcons (Qstime
,
2983 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2985 attrs
= Fcons (Fcons (Qtime
,
2986 ltime_from_jiffies (s_time
+ u_time
,
2989 attrs
= Fcons (Fcons (Qcutime
,
2990 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2992 attrs
= Fcons (Fcons (Qcstime
,
2993 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2995 attrs
= Fcons (Fcons (Qctime
,
2996 ltime_from_jiffies (cstime
+ cutime
,
2999 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
3000 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
3001 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount
)),
3003 tnow
= current_timespec ();
3004 telapsed
= get_up_time ();
3005 tboot
= timespec_sub (tnow
, telapsed
);
3006 tstart
= time_from_jiffies (start
, clocks_per_sec
);
3007 tstart
= timespec_add (tboot
, tstart
);
3008 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
3009 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/ 1024)),
3011 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4 * rss
)), attrs
);
3012 telapsed
= timespec_sub (tnow
, tstart
);
3013 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
3014 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
3015 pcpu
= timespectod (us_time
) / timespectod (telapsed
);
3018 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
3019 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
3022 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3028 strcpy (procfn_end
, "/cmdline");
3029 fd
= emacs_open (fn
, O_RDONLY
, 0);
3032 ptrdiff_t readsize
, nread_incr
;
3034 record_unwind_protect_int (close_file_unwind
, fd
);
3035 nread
= cmdline_size
= 0;
3039 cmdline
= xpalloc (cmdline
, &cmdline_size
, 2, STRING_BYTES_BOUND
, 1);
3041 /* Leave room even if every byte needs escaping below. */
3042 readsize
= (cmdline_size
>> 1) - nread
;
3044 nread_incr
= emacs_read (fd
, cmdline
+ nread
, readsize
);
3045 nread
+= max (0, nread_incr
);
3047 while (nread_incr
== readsize
);
3051 /* We don't want trailing null characters. */
3052 for (p
= cmdline
+ nread
; cmdline
< p
&& !p
[-1]; p
--)
3055 /* Escape-quote whitespace and backslashes. */
3056 q
= cmdline
+ cmdline_size
;
3061 if (c_isspace (c
) || c
== '\\')
3065 nread
= cmdline
+ cmdline_size
- q
;
3070 nread
= cmdsize
+ 2;
3071 cmdline_size
= nread
+ 1;
3072 q
= cmdline
= xrealloc (cmdline
, cmdline_size
);
3073 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3075 /* Command line is encoded in locale-coding-system; decode it. */
3076 cmd_str
= make_unibyte_string (q
, nread
);
3077 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3078 Vlocale_coding_system
, 0);
3080 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3087 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3089 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3090 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3091 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3092 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3093 #undef _FILE_OFFSET_BITS
3095 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3100 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3101 #define _FILE_OFFSET_BITS 64
3102 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3104 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3107 system_process_attributes (Lisp_Object pid
)
3109 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3114 struct psinfo pinfo
;
3120 Lisp_Object attrs
= Qnil
;
3121 Lisp_Object decoded_cmd
;
3122 struct gcpro gcpro1
, gcpro2
;
3125 CHECK_NUMBER_OR_FLOAT (pid
);
3126 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3127 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3128 if (stat (procfn
, &st
) < 0)
3131 GCPRO2 (attrs
, decoded_cmd
);
3135 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3137 pw
= getpwuid (uid
);
3140 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3143 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3145 gr
= getgrgid (gid
);
3148 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3151 strcpy (fn
, procfn
);
3152 procfn_end
= fn
+ strlen (fn
);
3153 strcpy (procfn_end
, "/psinfo");
3154 fd
= emacs_open (fn
, O_RDONLY
, 0);
3159 record_unwind_protect (close_file_unwind
, fd
);
3160 nread
= emacs_read (fd
, &pinfo
, sizeof pinfo
);
3163 if (nread
== sizeof pinfo
)
3165 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3166 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3167 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3171 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3172 state_str
[1] = '\0';
3173 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3176 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3177 need to get a string from it. */
3179 /* FIXME: missing: Qtpgid */
3191 Are they available? */
3193 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3194 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3195 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3196 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3197 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)),
3200 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3201 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)),
3203 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)),
3206 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3207 range 0 .. 2**15, representing 0.0 .. 1.0. */
3208 attrs
= Fcons (Fcons (Qpcpu
,
3209 make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)),
3211 attrs
= Fcons (Fcons (Qpmem
,
3212 make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)),
3215 decoded_cmd
= (code_convert_string_norecord
3216 (build_unibyte_string (pinfo
.pr_fname
),
3217 Vlocale_coding_system
, 0));
3218 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3219 decoded_cmd
= (code_convert_string_norecord
3220 (build_unibyte_string (pinfo
.pr_psargs
),
3221 Vlocale_coding_system
, 0));
3222 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3229 #elif defined __FreeBSD__
3231 static struct timespec
3232 timeval_to_timespec (struct timeval t
)
3234 return make_timespec (t
.tv_sec
, t
.tv_usec
* 1000);
3238 make_lisp_timeval (struct timeval t
)
3240 return make_lisp_time (timeval_to_timespec (t
));
3244 system_process_attributes (Lisp_Object pid
)
3247 int pagesize
= getpagesize ();
3248 unsigned long npages
;
3254 char args
[MAXPATHLEN
];
3255 struct timespec t
, now
;
3257 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3258 struct kinfo_proc proc
;
3259 size_t proclen
= sizeof proc
;
3261 struct gcpro gcpro1
, gcpro2
;
3262 Lisp_Object attrs
= Qnil
;
3263 Lisp_Object decoded_comm
;
3265 CHECK_NUMBER_OR_FLOAT (pid
);
3266 CONS_TO_INTEGER (pid
, int, proc_id
);
3269 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3272 GCPRO2 (attrs
, decoded_comm
);
3274 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3277 pw
= getpwuid (proc
.ki_uid
);
3280 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3282 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3285 gr
= getgrgid (proc
.ki_svgid
);
3288 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3290 decoded_comm
= (code_convert_string_norecord
3291 (build_unibyte_string (proc
.ki_comm
),
3292 Vlocale_coding_system
, 0));
3294 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3296 char state
[2] = {'\0', '\0'};
3297 switch (proc
.ki_stat
)
3319 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3322 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3323 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3324 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3327 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3330 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3332 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3333 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3334 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3335 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3336 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3338 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3340 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3342 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage
.ru_utime
),
3343 timeval_to_timespec (proc
.ki_rusage
.ru_stime
));
3344 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3346 attrs
= Fcons (Fcons (Qcutime
,
3347 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3349 attrs
= Fcons (Fcons (Qcstime
,
3350 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3352 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage_ch
.ru_utime
),
3353 timeval_to_timespec (proc
.ki_rusage_ch
.ru_stime
));
3354 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3356 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3358 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3359 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3360 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3361 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3362 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3365 now
= current_timespec ();
3366 t
= timespec_sub (now
, timeval_to_timespec (proc
.ki_start
));
3367 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3369 len
= sizeof fscale
;
3370 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3375 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3377 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3378 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3379 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3383 len
= sizeof npages
;
3384 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3386 double pmem
= (proc
.ki_flag
& P_INMEM
3387 ? 100.0 * proc
.ki_rssize
/ npages
3389 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3392 mib
[2] = KERN_PROC_ARGS
;
3394 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3397 for (i
= 0; i
< len
; i
++)
3399 if (! args
[i
] && i
< len
- 1)
3404 (code_convert_string_norecord
3405 (build_unibyte_string (args
),
3406 Vlocale_coding_system
, 0));
3408 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3415 /* The WINDOWSNT implementation is in w32.c.
3416 The MSDOS implementation is in dosfns.c. */
3417 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3420 system_process_attributes (Lisp_Object pid
)
3425 #endif /* !defined (WINDOWSNT) */