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 (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
228 /* Should perhaps error if in batch mode */
230 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
231 #else /* no TIOCSTI */
232 error ("Cannot stuff terminal input characters in this version of Unix");
233 #endif /* no TIOCSTI */
239 init_baud_rate (int fd
)
249 #else /* not DOS_NT */
254 emacs_ospeed
= cfgetospeed (&sg
);
255 #endif /* not DOS_NT */
258 baud_rate
= (emacs_ospeed
< ARRAYELTS (baud_convert
)
259 ? baud_convert
[emacs_ospeed
] : 9600);
268 /* Wait for the subprocess with process id CHILD to terminate or change status.
269 CHILD must be a child process that has not been reaped.
270 If STATUS is non-null, store the waitpid-style exit status into *STATUS
271 and tell wait_reading_process_output that it needs to look around.
272 Use waitpid-style OPTIONS when waiting.
273 If INTERRUPTIBLE, this function is interruptible by a signal.
275 Return CHILD if successful, 0 if no status is available;
276 the latter is possible only when options & NOHANG. */
278 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
282 /* Invoke waitpid only with a known process ID; do not invoke
283 waitpid with a nonpositive argument. Otherwise, Emacs might
284 reap an unwanted process by mistake. For example, invoking
285 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
286 so that another thread running glib won't find them. */
289 while ((pid
= waitpid (child
, status
, options
)) < 0)
291 /* Check that CHILD is a child process that has not been reaped,
292 and that STATUS and OPTIONS are valid. Otherwise abort,
293 as continuing after this internal error could cause Emacs to
294 become confused and kill innocent-victim processes. */
298 /* Note: the MS-Windows emulation of waitpid calls QUIT
304 /* If successful and status is requested, tell wait_reading_process_output
305 that it needs to wake up and look around. */
306 if (pid
&& status
&& input_available_clear_time
)
307 *input_available_clear_time
= make_timespec (0, 0);
312 /* Wait for the subprocess with process id CHILD to terminate.
313 CHILD must be a child process that has not been reaped.
314 If STATUS is non-null, store the waitpid-style exit status into *STATUS
315 and tell wait_reading_process_output that it needs to look around.
316 If INTERRUPTIBLE, this function is interruptible by a signal. */
318 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
320 get_child_status (child
, status
, 0, interruptible
);
323 /* Report whether the subprocess with process id CHILD has changed status.
324 Termination counts as a change of status.
325 CHILD must be a child process that has not been reaped.
326 If STATUS is non-null, store the waitpid-style exit status into *STATUS
327 and tell wait_reading_process_output that it needs to look around.
328 Use waitpid-style OPTIONS to check status, but do not wait.
330 Return CHILD if successful, 0 if no status is available because
331 the process's state has not changed. */
333 child_status_changed (pid_t child
, int *status
, int options
)
335 return get_child_status (child
, status
, WNOHANG
| options
, 0);
339 /* Set up the terminal at the other end of a pseudo-terminal that
340 we will be controlling an inferior through.
341 It should not echo or do line-editing, since that is done
342 in Emacs. No padding needed for insertion into an Emacs buffer. */
345 child_setup_tty (int out
)
350 emacs_get_tty (out
, &s
);
351 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
352 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
354 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
355 Some versions of GNU Hurd do not have FFDLY? */
357 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
358 /* No output delays */
360 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
361 /* No output delays */
364 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
365 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
367 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
370 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
373 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
375 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
376 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
377 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
378 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
381 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
384 #ifdef SIGNALS_VIA_CHARACTERS
385 /* the QUIT and INTR character are used in process_send_signal
386 so set them here to something useful. */
387 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
388 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
389 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
390 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
391 #endif /* not SIGNALS_VIA_CHARACTERS */
394 /* Also, PTY overloads NUL and BREAK.
395 don't ignore break, but don't signal either, so it looks like NUL. */
396 s
.main
.c_iflag
&= ~IGNBRK
;
397 s
.main
.c_iflag
&= ~BRKINT
;
398 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
399 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
400 would force it to 0377. That looks like duplicated code. */
401 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
404 /* We originally enabled ICANON (and set VEOF to 04), and then had
405 process.c send additional EOF chars to flush the output when faced
406 with long lines, but this leads to weird effects when the
407 subprocess has disabled ICANON and ends up seeing those spurious
408 extra EOFs. So we don't send EOFs any more in
409 process.c:send_process. First we tried to disable ICANON by
410 default, so if a subsprocess sets up ICANON, it's his problem (or
411 the Elisp package that talks to it) to deal with lines that are
412 too long. But this disables some features, such as the ability
413 to send EOF signals. So we re-enabled ICANON but there is no
414 more "send eof to flush" going on (which is wrong and unportable
415 in itself). The correct way to handle too much output is to
416 buffer what could not be written and then write it again when
417 select returns ok for writing. This has it own set of
418 problems. Write is now asynchronous, is that a problem? How much
419 do we buffer, and what do we do when that limit is reached? */
421 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
422 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
423 #if 0 /* These settings only apply to non-ICANON mode. */
424 s
.main
.c_cc
[VMIN
] = 1;
425 s
.main
.c_cc
[VTIME
] = 0;
428 emacs_set_tty (out
, &s
, 0);
429 #endif /* not WINDOWSNT */
431 #endif /* not MSDOS */
434 /* Record a signal code and the action for it. */
438 struct sigaction action
;
441 static void save_signal_handlers (struct save_signal
*);
442 static void restore_signal_handlers (struct save_signal
*);
444 /* Suspend the Emacs process; give terminal to its superior. */
452 /* On a system where suspending is not implemented,
453 instead fork a subshell and let it talk directly to the terminal
460 /* Fork a subshell. */
465 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
468 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
470 char oldwd
[MAX_UTF8_PATH
];
475 struct save_signal saved_handlers
[5];
476 char *str
= SSDATA (encode_current_directory ());
482 char *volatile str_volatile
= str
;
489 error ("Can't spawn subshell");
491 saved_handlers
[0].code
= SIGINT
;
492 saved_handlers
[1].code
= SIGQUIT
;
493 saved_handlers
[2].code
= SIGTERM
;
495 saved_handlers
[3].code
= SIGIO
;
496 saved_handlers
[4].code
= 0;
498 saved_handlers
[3].code
= 0;
502 save_signal_handlers (saved_handlers
);
509 #ifdef DOS_NT /* MW, Aug 1993 */
510 getcwd (oldwd
, sizeof oldwd
);
512 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
515 sh
= egetenv ("SHELL");
519 /* Use our buffer's default directory for the subshell. */
520 if (chdir (str
) != 0)
524 _exit (EXIT_CANCELED
);
528 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
530 char *epwd
= getenv ("PWD");
531 char old_pwd
[MAXPATHLEN
+1+4];
533 /* If PWD is set, pass it with corrected value. */
536 strcpy (old_pwd
, epwd
);
537 setenv ("PWD", str
, 1);
540 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
542 putenv (old_pwd
); /* restore previous value */
544 #else /* not MSDOS */
546 /* Waits for process completion */
547 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
548 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
550 write (1, "Can't execute subshell", 22);
551 #else /* not WINDOWSNT */
552 execlp (sh
, sh
, (char *) 0);
554 _exit (errno
== ENOENT
? EXIT_ENOENT
: EXIT_CANNOT_INVOKE
);
555 #endif /* not WINDOWSNT */
556 #endif /* not MSDOS */
559 /* Do this now if we did not do it before. */
561 save_signal_handlers (saved_handlers
);
565 wait_for_termination (pid
, &status
, 0);
567 restore_signal_handlers (saved_handlers
);
571 save_signal_handlers (struct save_signal
*saved_handlers
)
573 while (saved_handlers
->code
)
575 struct sigaction action
;
576 emacs_sigaction_init (&action
, SIG_IGN
);
577 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
583 restore_signal_handlers (struct save_signal
*saved_handlers
)
585 while (saved_handlers
->code
)
587 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
593 static int old_fcntl_flags
[FD_SETSIZE
];
600 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
601 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
602 interrupts_deferred
= 0;
611 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
625 sigemptyset (&unblocked
);
627 sigaddset (&unblocked
, SIGWINCH
);
629 sigaddset (&unblocked
, SIGIO
);
630 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
632 interrupts_deferred
= 0;
637 unrequest_sigio (void)
645 sigemptyset (&blocked
);
647 sigaddset (&blocked
, SIGWINCH
);
649 sigaddset (&blocked
, SIGIO
);
650 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
651 interrupts_deferred
= 1;
659 signal (SIGIO
, SIG_IGN
);
667 block_child_signal (sigset_t
*oldset
)
670 sigemptyset (&blocked
);
671 sigaddset (&blocked
, SIGCHLD
);
672 sigaddset (&blocked
, SIGINT
);
673 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
676 /* Unblock SIGCHLD. */
679 unblock_child_signal (sigset_t
const *oldset
)
681 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
686 /* Saving and restoring the process group of Emacs's terminal. */
688 /* The process group of which Emacs was a member when it initially
691 If Emacs was in its own process group (i.e. inherited_pgroup ==
692 getpid ()), then we know we're running under a shell with job
693 control (Emacs would never be run as part of a pipeline).
696 If Emacs was not in its own process group, then we know we're
697 running under a shell (or a caller) that doesn't know how to
698 separate itself from Emacs (like sh). Emacs must be in its own
699 process group in order to receive SIGIO correctly. In this
700 situation, we put ourselves in our own pgroup, forcibly set the
701 tty's pgroup to our pgroup, and make sure to restore and reinstate
702 the tty's pgroup just like any other terminal setting. If
703 inherited_group was not the tty's pgroup, then we'll get a
704 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
705 it goes foreground in the future, which is what should happen. */
707 static pid_t inherited_pgroup
;
710 init_foreground_group (void)
712 pid_t pgrp
= getpgrp ();
713 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
716 /* Block and unblock SIGTTOU. */
719 block_tty_out_signal (sigset_t
*oldset
)
723 sigemptyset (&blocked
);
724 sigaddset (&blocked
, SIGTTOU
);
725 pthread_sigmask (SIG_BLOCK
, &blocked
, oldset
);
730 unblock_tty_out_signal (sigset_t
const *oldset
)
733 pthread_sigmask (SIG_SETMASK
, oldset
, 0);
737 /* Safely set a controlling terminal FD's process group to PGID.
738 If we are not in the foreground already, POSIX requires tcsetpgrp
739 to deliver a SIGTTOU signal, which would stop us. This is an
740 annoyance, so temporarily ignore the signal.
742 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
743 skip all this unless SIGTTOU is defined. */
745 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
750 block_tty_out_signal (&oldset
);
751 tcsetpgrp (fd
, pgid
);
752 unblock_tty_out_signal (&oldset
);
757 /* Split off the foreground process group to Emacs alone. When we are
758 in the foreground, but not started in our own process group,
759 redirect the tty device handle FD to point to our own process
760 group. FD must be the file descriptor of the controlling tty. */
762 narrow_foreground_group (int fd
)
764 if (inherited_pgroup
&& setpgid (0, 0) == 0)
765 tcsetpgrp_without_stopping (fd
, getpid ());
768 /* Set the tty to our original foreground group. */
770 widen_foreground_group (int fd
)
772 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
773 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
776 /* Getting and setting emacs_tty structures. */
778 /* Set *TC to the parameters associated with the terminal FD,
779 or clear it if the parameters are not available. */
781 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
783 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
785 /* We have those nifty POSIX tcmumbleattr functions. */
786 memset (&settings
->main
, 0, sizeof (settings
->main
));
787 tcgetattr (fd
, &settings
->main
);
792 /* Set the parameters of the tty on FD according to the contents of
793 *SETTINGS. If FLUSHP, discard input.
794 Return 0 if all went well, and -1 (setting errno) if anything failed. */
797 emacs_set_tty (int fd
, struct emacs_tty
*settings
, bool flushp
)
799 /* Set the primary parameters - baud rate, character size, etcetera. */
802 /* We have those nifty POSIX tcmumbleattr functions.
803 William J. Smith <wjs@wiis.wang.com> writes:
804 "POSIX 1003.1 defines tcsetattr to return success if it was
805 able to perform any of the requested actions, even if some
806 of the requested actions could not be performed.
807 We must read settings back to ensure tty setup properly.
808 AIX requires this to keep tty from hanging occasionally." */
809 /* This make sure that we don't loop indefinitely in here. */
810 for (i
= 0 ; i
< 10 ; i
++)
811 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
822 memset (&new, 0, sizeof (new));
823 /* Get the current settings, and see if they're what we asked for. */
824 tcgetattr (fd
, &new);
825 /* We cannot use memcmp on the whole structure here because under
826 * aix386 the termios structure has some reserved field that may
829 if ( new.c_iflag
== settings
->main
.c_iflag
830 && new.c_oflag
== settings
->main
.c_oflag
831 && new.c_cflag
== settings
->main
.c_cflag
832 && new.c_lflag
== settings
->main
.c_lflag
833 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
840 /* We have survived the tempest. */
847 static int old_fcntl_owner
[FD_SETSIZE
];
848 #endif /* F_SETOWN */
850 /* This may also be defined in stdio,
851 but if so, this does no harm,
852 and using the same name avoids wasting the other one's space. */
855 unsigned char _sobuf
[BUFSIZ
+8];
860 /* Initialize the terminal mode on all tty devices that are currently
864 init_all_sys_modes (void)
866 struct tty_display_info
*tty
;
867 for (tty
= tty_list
; tty
; tty
= tty
->next
)
868 init_sys_modes (tty
);
871 /* Initialize the terminal mode on the given tty device. */
874 init_sys_modes (struct tty_display_info
*tty_out
)
876 struct emacs_tty tty
;
877 Lisp_Object terminal
;
879 Vtty_erase_char
= Qnil
;
884 if (!tty_out
->output
)
885 return; /* The tty is suspended. */
887 narrow_foreground_group (fileno (tty_out
->input
));
889 if (! tty_out
->old_tty
)
890 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
892 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
894 tty
= *tty_out
->old_tty
;
896 #if !defined (DOS_NT)
897 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
899 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
900 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
901 #ifdef INLCR /* I'm just being cautious,
902 since I can't check how widespread INLCR is--rms. */
903 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
906 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
908 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
909 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
911 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
913 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
914 if (tty_out
->flow_control
)
916 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
918 tty
.main
.c_iflag
&= ~IXANY
;
922 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
923 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
925 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
927 if (tty_out
->meta_key
)
929 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
930 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
934 XSETTERMINAL(terminal
, tty_out
->terminal
);
935 if (!NILP (Fcontrolling_tty_p (terminal
)))
937 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
938 /* Set up C-g for both SIGQUIT and SIGINT.
939 We don't know which we will get, but we handle both alike
940 so which one it really gives us does not matter. */
941 tty
.main
.c_cc
[VQUIT
] = quit_char
;
945 /* We normally don't get interrupt or quit signals from tty
946 devices other than our controlling terminal; therefore,
947 we must handle C-g as normal input. Unfortunately, this
948 means that the interrupt and quit feature must be
949 disabled on secondary ttys, or we would not even see the
952 Note that even though emacsclient could have special code
953 to pass SIGINT to Emacs, we should _not_ enable
954 interrupt/quit keys for emacsclient frames. This means
955 that we can't break out of loops in C code from a
956 secondary tty frame, but we can always decide what
957 display the C-g came from, which is more important from a
958 usability point of view. (Consider the case when two
959 people work together using the same Emacs instance.) */
960 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
961 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
963 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
964 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
966 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
971 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
974 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
976 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
977 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
980 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
983 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
984 #endif /* VREPRINT */
986 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
989 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
990 #endif /* VDISCARD */
992 if (tty_out
->flow_control
)
995 tty
.main
.c_cc
[VSTART
] = '\021';
998 tty
.main
.c_cc
[VSTOP
] = '\023';
1004 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1007 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1012 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1013 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1014 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1015 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1016 if (tty_out
->flow_control
)
1019 tty
.main
.c_cc
[VSTART
] = '\021';
1022 tty
.main
.c_cc
[VSTOP
] = '\023';
1025 /* Also, PTY overloads NUL and BREAK.
1026 don't ignore break, but don't signal either, so it looks like NUL.
1027 This really serves a purpose only if running in an XTERM window
1028 or via TELNET or the like, but does no harm elsewhere. */
1029 tty
.main
.c_iflag
&= ~IGNBRK
;
1030 tty
.main
.c_iflag
&= ~BRKINT
;
1032 #endif /* not DOS_NT */
1034 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1035 if (!tty_out
->term_initted
)
1036 internal_terminal_init ();
1037 dos_ttraw (tty_out
);
1040 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1042 /* This code added to insure that, if flow-control is not to be used,
1043 we have an unlocked terminal at the start. */
1046 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1049 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1052 #if !defined (DOS_NT)
1054 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1059 if (interrupt_input
)
1061 old_fcntl_owner
[fileno (tty_out
->input
)] =
1062 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1063 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1064 init_sigio (fileno (tty_out
->input
));
1066 if (gpm_tty
== tty_out
)
1068 /* Arrange for mouse events to give us SIGIO signals. */
1069 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1070 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1071 init_sigio (gpm_fd
);
1073 #endif /* HAVE_GPM */
1075 #endif /* F_GETOWN */
1078 /* This symbol is defined on recent USG systems.
1079 Someone says without this call USG won't really buffer the file
1080 even with a call to setbuf. */
1081 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1083 setbuf (tty_out
->output
, (char *) _sobuf
);
1086 if (tty_out
->terminal
->set_terminal_modes_hook
)
1087 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1089 if (!tty_out
->term_initted
)
1091 Lisp_Object tail
, frame
;
1092 FOR_EACH_FRAME (tail
, frame
)
1094 /* XXX This needs to be revised. */
1095 if (FRAME_TERMCAP_P (XFRAME (frame
))
1096 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1097 init_frame_faces (XFRAME (frame
));
1101 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1103 /* We used to call "direct_output_forward_char(0)" here,
1104 but it's not clear why, since it may not do anything anyway. */
1108 Lisp_Object tail
, frame
;
1110 FOR_EACH_FRAME (tail
, frame
)
1112 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1113 || FRAME_MSDOS_P (XFRAME (frame
)))
1114 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1115 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1119 tty_out
->term_initted
= 1;
1122 /* Return true if safe to use tabs in output.
1123 At the time this is called, init_sys_modes has not been done yet. */
1126 tabs_safe_p (int fd
)
1128 struct emacs_tty etty
;
1130 emacs_get_tty (fd
, &etty
);
1133 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1134 #else /* not TABDLY */
1136 #endif /* not TABDLY */
1142 /* Get terminal size from system.
1143 Store number of lines into *HEIGHTP and width into *WIDTHP.
1144 We store 0 if there's no valid information. */
1147 get_tty_size (int fd
, int *widthp
, int *heightp
)
1149 #if defined TIOCGWINSZ
1152 struct winsize size
;
1154 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1155 *widthp
= *heightp
= 0;
1158 *widthp
= size
.ws_col
;
1159 *heightp
= size
.ws_row
;
1162 #elif defined TIOCGSIZE
1164 /* SunOS - style. */
1165 struct ttysize size
;
1167 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1168 *widthp
= *heightp
= 0;
1171 *widthp
= size
.ts_cols
;
1172 *heightp
= size
.ts_lines
;
1175 #elif defined WINDOWSNT
1177 CONSOLE_SCREEN_BUFFER_INFO info
;
1178 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1180 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1181 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1184 *widthp
= *heightp
= 0;
1188 *widthp
= ScreenCols ();
1189 *heightp
= ScreenRows ();
1191 #else /* system doesn't know size */
1199 /* Set the logical window size associated with descriptor FD
1200 to HEIGHT and WIDTH. This is used mainly with ptys.
1201 Return a negative value on failure. */
1204 set_window_size (int fd
, int height
, int width
)
1209 struct winsize size
;
1210 size
.ws_row
= height
;
1211 size
.ws_col
= width
;
1213 return ioctl (fd
, TIOCSWINSZ
, &size
);
1218 /* SunOS - style. */
1219 struct ttysize size
;
1220 size
.ts_lines
= height
;
1221 size
.ts_cols
= width
;
1223 return ioctl (fd
, TIOCGSIZE
, &size
);
1226 #endif /* not SunOS-style */
1227 #endif /* not BSD-style */
1232 /* Prepare all terminal devices for exiting Emacs. */
1235 reset_all_sys_modes (void)
1237 struct tty_display_info
*tty
;
1238 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1239 reset_sys_modes (tty
);
1242 /* Prepare the terminal for closing it; move the cursor to the
1243 bottom of the frame, turn off interrupt-driven I/O, etc. */
1246 reset_sys_modes (struct tty_display_info
*tty_out
)
1253 if (!tty_out
->term_initted
)
1256 if (!tty_out
->output
)
1257 return; /* The tty is suspended. */
1259 /* Go to and clear the last line of the terminal. */
1261 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1263 /* Code adapted from tty_clear_end_of_line. */
1264 if (tty_out
->TS_clr_line
)
1266 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1269 { /* have to do it the hard way */
1271 tty_turn_off_insert (tty_out
);
1273 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1275 fputc (' ', tty_out
->output
);
1279 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1280 fflush (tty_out
->output
);
1282 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1283 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1285 /* Avoid possible loss of output when changing terminal modes. */
1286 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1291 if (interrupt_input
)
1293 reset_sigio (fileno (tty_out
->input
));
1294 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1295 old_fcntl_owner
[fileno (tty_out
->input
)]);
1297 #endif /* F_SETOWN */
1298 fcntl (fileno (tty_out
->input
), F_SETFL
,
1299 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1302 if (tty_out
->old_tty
)
1303 while (emacs_set_tty (fileno (tty_out
->input
),
1304 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1307 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1311 widen_foreground_group (fileno (tty_out
->input
));
1316 /* Set up the proper status flags for use of a pty. */
1321 /* I'm told that TOICREMOTE does not mean control chars
1322 "can't be sent" but rather that they don't have
1323 input-editing or signaling effects.
1324 That should be good, because we have other ways
1325 to do those things in Emacs.
1326 However, telnet mode seems not to work on 4.2.
1327 So TIOCREMOTE is turned off now. */
1329 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1330 will hang. In particular, the "timeout" feature (which
1331 causes a read to return if there is no data available)
1332 does this. Also it is known that telnet mode will hang
1333 in such a way that Emacs must be stopped (perhaps this
1334 is the same problem).
1336 If TIOCREMOTE is turned off, then there is a bug in
1337 hp-ux which sometimes loses data. Apparently the
1338 code which blocks the master process when the internal
1339 buffer fills up does not work. Other than this,
1340 though, everything else seems to work fine.
1342 Since the latter lossage is more benign, we may as well
1343 lose that way. -- cph */
1345 #if defined (UNIX98_PTYS)
1348 ioctl (fd
, FIONBIO
, &on
);
1353 #endif /* HAVE_PTYS */
1356 #include <sys/socket.h>
1358 #endif /* HAVE_SOCKETS */
1361 #ifndef HAVE_H_ERRNO
1364 #endif /* TRY_AGAIN */
1367 init_system_name (void)
1369 #ifndef HAVE_GETHOSTNAME
1372 Vsystem_name
= build_string (uts
.nodename
);
1373 #else /* HAVE_GETHOSTNAME */
1374 char *hostname_alloc
= NULL
;
1375 char hostname_buf
[256];
1376 ptrdiff_t hostname_size
= sizeof hostname_buf
;
1377 char *hostname
= hostname_buf
;
1379 /* Try to get the host name; if the buffer is too short, try
1380 again. Apparently, the only indication gethostname gives of
1381 whether the buffer was large enough is the presence or absence
1382 of a '\0' in the string. Eech. */
1385 gethostname (hostname
, hostname_size
- 1);
1386 hostname
[hostname_size
- 1] = '\0';
1388 /* Was the buffer large enough for the '\0'? */
1389 if (strlen (hostname
) < hostname_size
- 1)
1392 hostname
= hostname_alloc
= xpalloc (hostname_alloc
, &hostname_size
, 1,
1393 min (PTRDIFF_MAX
, SIZE_MAX
), 1);
1396 /* Turn the hostname into the official, fully-qualified hostname.
1397 Don't do this if we're going to dump; this can confuse system
1398 libraries on some machines and make the dumped emacs core dump. */
1401 #endif /* not CANNOT_DUMP */
1402 if (! strchr (hostname
, '.'))
1405 #ifdef HAVE_GETADDRINFO
1406 struct addrinfo
*res
;
1407 struct addrinfo hints
;
1410 memset (&hints
, 0, sizeof (hints
));
1411 hints
.ai_socktype
= SOCK_STREAM
;
1412 hints
.ai_flags
= AI_CANONNAME
;
1414 for (count
= 0;; count
++)
1416 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1417 || ret
!= EAI_AGAIN
)
1422 Fsleep_for (make_number (1), Qnil
);
1427 struct addrinfo
*it
= res
;
1430 char *fqdn
= it
->ai_canonname
;
1431 if (fqdn
&& strchr (fqdn
, '.')
1432 && strcmp (fqdn
, "localhost.localdomain") != 0)
1438 ptrdiff_t len
= strlen (it
->ai_canonname
);
1439 if (hostname_size
<= len
)
1441 hostname_size
= len
+ 1;
1442 hostname
= hostname_alloc
= xrealloc (hostname_alloc
,
1445 strcpy (hostname
, it
->ai_canonname
);
1449 #else /* !HAVE_GETADDRINFO */
1451 for (count
= 0;; count
++)
1457 hp
= gethostbyname (hostname
);
1459 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1466 Fsleep_for (make_number (1), Qnil
);
1471 char *fqdn
= (char *) hp
->h_name
;
1473 if (!strchr (fqdn
, '.'))
1475 /* We still don't have a fully qualified domain name.
1476 Try to find one in the list of alternate names */
1477 char **alias
= hp
->h_aliases
;
1479 && (!strchr (*alias
, '.')
1480 || !strcmp (*alias
, "localhost.localdomain")))
1487 #endif /* !HAVE_GETADDRINFO */
1489 #endif /* HAVE_SOCKETS */
1490 Vsystem_name
= build_string (hostname
);
1491 xfree (hostname_alloc
);
1492 #endif /* HAVE_GETHOSTNAME */
1495 for (p
= SSDATA (Vsystem_name
); *p
; p
++)
1496 if (*p
== ' ' || *p
== '\t')
1501 sigset_t empty_mask
;
1503 static struct sigaction process_fatal_action
;
1506 emacs_sigaction_flags (void)
1509 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1510 'select') to reset their timeout on some platforms (e.g.,
1511 HP-UX 11), which is not what we want. Also, when Emacs is
1512 interactive, we don't want SA_RESTART because we need to poll
1513 for pending input so we need long-running syscalls to be interrupted
1514 after a signal that sets pending_signals.
1516 Non-interactive keyboard input goes through stdio, where we
1517 always want restartable system calls. */
1524 /* Store into *ACTION a signal action suitable for Emacs, with handler
1527 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1529 sigemptyset (&action
->sa_mask
);
1531 /* When handling a signal, block nonfatal system signals that are caught
1532 by Emacs. This makes race conditions less likely. */
1533 sigaddset (&action
->sa_mask
, SIGALRM
);
1535 sigaddset (&action
->sa_mask
, SIGCHLD
);
1538 sigaddset (&action
->sa_mask
, SIGDANGER
);
1540 #ifdef PROFILER_CPU_SUPPORT
1541 sigaddset (&action
->sa_mask
, SIGPROF
);
1544 sigaddset (&action
->sa_mask
, SIGWINCH
);
1546 if (! noninteractive
)
1548 sigaddset (&action
->sa_mask
, SIGINT
);
1549 sigaddset (&action
->sa_mask
, SIGQUIT
);
1551 sigaddset (&action
->sa_mask
, SIGIO
);
1555 action
->sa_handler
= handler
;
1556 action
->sa_flags
= emacs_sigaction_flags ();
1559 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1560 static pthread_t main_thread
;
1563 /* SIG has arrived at the current process. Deliver it to the main
1564 thread, which should handle it with HANDLER.
1566 If we are on the main thread, handle the signal SIG with HANDLER.
1567 Otherwise, redirect the signal to the main thread, blocking it from
1568 this thread. POSIX says any thread can receive a signal that is
1569 associated with a process, process group, or asynchronous event.
1570 On GNU/Linux that is not true, but for other systems (FreeBSD at
1573 deliver_process_signal (int sig
, signal_handler_t handler
)
1575 /* Preserve errno, to avoid race conditions with signal handlers that
1576 might change errno. Races can occur even in single-threaded hosts. */
1577 int old_errno
= errno
;
1579 bool on_main_thread
= true;
1580 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1581 if (! pthread_equal (pthread_self (), main_thread
))
1584 sigemptyset (&blocked
);
1585 sigaddset (&blocked
, sig
);
1586 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1587 pthread_kill (main_thread
, sig
);
1588 on_main_thread
= false;
1597 /* Static location to save a fatal backtrace in a thread.
1598 FIXME: If two subsidiary threads fail simultaneously, the resulting
1599 backtrace may be garbage. */
1600 enum { BACKTRACE_LIMIT_MAX
= 500 };
1601 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1602 static int thread_backtrace_npointers
;
1604 /* SIG has arrived at the current thread.
1605 If we are on the main thread, handle the signal SIG with HANDLER.
1606 Otherwise, this is a fatal error in the handling thread. */
1608 deliver_thread_signal (int sig
, signal_handler_t handler
)
1610 int old_errno
= errno
;
1612 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1613 if (! pthread_equal (pthread_self (), main_thread
))
1615 thread_backtrace_npointers
1616 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1617 sigaction (sig
, &process_fatal_action
, 0);
1618 pthread_kill (main_thread
, sig
);
1620 /* Avoid further damage while the main thread is exiting. */
1622 sigsuspend (&empty_mask
);
1630 #if !HAVE_DECL_SYS_SIGLIST
1632 # ifdef _sys_siglist
1633 # define sys_siglist _sys_siglist
1634 # elif HAVE_DECL___SYS_SIGLIST
1635 # define sys_siglist __sys_siglist
1637 # define sys_siglist my_sys_siglist
1638 static char const *sys_siglist
[NSIG
];
1643 # define sys_siglist_entries _sys_nsig
1645 # define sys_siglist_entries NSIG
1648 /* Handle bus errors, invalid instruction, etc. */
1650 handle_fatal_signal (int sig
)
1652 terminate_due_to_signal (sig
, 40);
1656 deliver_fatal_signal (int sig
)
1658 deliver_process_signal (sig
, handle_fatal_signal
);
1662 deliver_fatal_thread_signal (int sig
)
1664 deliver_thread_signal (sig
, handle_fatal_signal
);
1667 static _Noreturn
void
1668 handle_arith_signal (int sig
)
1670 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1671 xsignal0 (Qarith_error
);
1675 deliver_arith_signal (int sig
)
1677 deliver_thread_signal (sig
, handle_arith_signal
);
1682 /* Handler for SIGDANGER. */
1684 handle_danger_signal (int sig
)
1686 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1688 /* It might be unsafe to call do_auto_save now. */
1689 force_auto_save_soon ();
1693 deliver_danger_signal (int sig
)
1695 deliver_process_signal (sig
, handle_danger_signal
);
1699 /* Treat SIG as a terminating signal, unless it is already ignored and
1700 we are in --batch mode. Among other things, this makes nohup work. */
1702 maybe_fatal_sig (int sig
)
1704 bool catch_sig
= !noninteractive
;
1707 struct sigaction old_action
;
1708 sigaction (sig
, 0, &old_action
);
1709 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1712 sigaction (sig
, &process_fatal_action
, 0);
1716 init_signals (bool dumping
)
1718 struct sigaction thread_fatal_action
;
1719 struct sigaction action
;
1721 sigemptyset (&empty_mask
);
1723 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1724 main_thread
= pthread_self ();
1727 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1730 sys_siglist
[SIGABRT
] = "Aborted";
1732 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1734 sys_siglist
[SIGALRM
] = "Alarm clock";
1736 sys_siglist
[SIGBUS
] = "Bus error";
1739 sys_siglist
[SIGCHLD
] = "Child status changed";
1742 sys_siglist
[SIGCONT
] = "Continued";
1745 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1748 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1751 sys_siglist
[SIGEMT
] = "Emulation trap";
1753 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1755 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1758 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1760 sys_siglist
[SIGHUP
] = "Hangup";
1761 sys_siglist
[SIGILL
] = "Illegal instruction";
1762 sys_siglist
[SIGINT
] = "Interrupt";
1764 sys_siglist
[SIGIO
] = "I/O possible";
1767 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1770 sys_siglist
[SIGIOT
] = "IOT trap";
1772 sys_siglist
[SIGKILL
] = "Killed";
1774 sys_siglist
[SIGLOST
] = "Resource lost";
1777 sys_siglist
[SIGLWP
] = "SIGLWP";
1780 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1783 sys_siglist
[SIGWIND
] = "SIGPHONE";
1785 sys_siglist
[SIGPIPE
] = "Broken pipe";
1787 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1790 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1793 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1796 sys_siglist
[SIGPWR
] = "Power-fail restart";
1798 sys_siglist
[SIGQUIT
] = "Quit";
1800 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1803 sys_siglist
[SIGSAK
] = "Secure attention";
1805 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1807 sys_siglist
[SIGSOUND
] = "Sound completed";
1810 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1813 sys_siglist
[SIGSTP
] = "Stopped (user)";
1816 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1818 sys_siglist
[SIGTERM
] = "Terminated";
1820 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1823 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1826 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1829 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1832 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1835 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1838 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1841 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1844 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1847 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1850 sys_siglist
[SIGWINCH
] = "Window size changed";
1853 sys_siglist
[SIGWIND
] = "SIGWIND";
1856 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1859 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1862 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1864 /* Don't alter signal handlers if dumping. On some machines,
1865 changing signal handlers sets static data that would make signals
1866 fail to work right when the dumped Emacs is run. */
1870 sigfillset (&process_fatal_action
.sa_mask
);
1871 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1872 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1874 sigfillset (&thread_fatal_action
.sa_mask
);
1875 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1876 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1878 /* SIGINT may need special treatment on MS-Windows. See
1879 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1880 Please update the doc of kill-emacs, kill-emacs-hook, and
1881 NEWS if you change this. */
1883 maybe_fatal_sig (SIGHUP
);
1884 maybe_fatal_sig (SIGINT
);
1885 maybe_fatal_sig (SIGTERM
);
1887 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1888 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1889 to behave more like typical batch applications do. */
1890 if (! noninteractive
)
1891 signal (SIGPIPE
, SIG_IGN
);
1893 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1894 sigaction (SIGILL
, &thread_fatal_action
, 0);
1895 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1897 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1898 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1899 interpreter's floating point operations, so treat SIGFPE as an
1900 arith-error if it arises in the main thread. */
1901 if (IEEE_FLOATING_POINT
)
1902 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1905 emacs_sigaction_init (&action
, deliver_arith_signal
);
1906 sigaction (SIGFPE
, &action
, 0);
1910 add_user_signal (SIGUSR1
, "sigusr1");
1913 add_user_signal (SIGUSR2
, "sigusr2");
1915 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1917 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1920 sigaction (SIGORE
, &thread_fatal_action
, 0);
1923 sigaction (SIGUME
, &thread_fatal_action
, 0);
1926 sigaction (SIGDLK
, &process_fatal_action
, 0);
1929 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1932 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1935 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1938 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1940 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1942 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1944 sigaction (SIGTERM
, &process_fatal_action
, 0);
1946 signal (SIGPROF
, SIG_IGN
);
1949 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1952 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1955 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1959 /* This just means available memory is getting low. */
1960 emacs_sigaction_init (&action
, deliver_danger_signal
);
1961 sigaction (SIGDANGER
, &action
, 0);
1964 /* AIX-specific signals. */
1966 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1969 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1972 sigaction (SIGMSG
, &process_fatal_action
, 0);
1975 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1978 sigaction (SIGSAK
, &process_fatal_action
, 0);
1981 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1984 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1994 /* Figure out how many bits the system's random number generator uses.
1995 `random' and `lrand48' are assumed to return 31 usable bits.
1996 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1997 so we'll shift it and treat it like the 15-bit USG `rand'. */
2001 # define RAND_BITS 31
2002 # else /* !HAVE_RANDOM */
2003 # ifdef HAVE_LRAND48
2004 # define RAND_BITS 31
2005 # define random lrand48
2006 # else /* !HAVE_LRAND48 */
2007 # define RAND_BITS 15
2008 # if RAND_MAX == 32767
2009 # define random rand
2010 # else /* RAND_MAX != 32767 */
2011 # if RAND_MAX == 2147483647
2012 # define random() (rand () >> 16)
2013 # else /* RAND_MAX != 2147483647 */
2015 # define random rand
2017 # define random() (rand () >> 16)
2019 # endif /* RAND_MAX != 2147483647 */
2020 # endif /* RAND_MAX != 32767 */
2021 # endif /* !HAVE_LRAND48 */
2022 # endif /* !HAVE_RANDOM */
2023 #endif /* !RAND_BITS */
2026 seed_random (void *seed
, ptrdiff_t seed_size
)
2028 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2029 unsigned int arg
= 0;
2033 unsigned char *argp
= (unsigned char *) &arg
;
2034 unsigned char *seedp
= seed
;
2036 for (i
= 0; i
< seed_size
; i
++)
2037 argp
[i
% sizeof arg
] ^= seedp
[i
];
2041 # ifdef HAVE_LRAND48
2052 struct timespec t
= current_timespec ();
2053 uintmax_t v
= getpid () ^ t
.tv_sec
^ t
.tv_nsec
;
2054 seed_random (&v
, sizeof v
);
2058 * Return a nonnegative random integer out of whatever we've got.
2059 * It contains enough bits to make a random (signed) Emacs fixnum.
2060 * This suffices even for a 64-bit architecture with a 15-bit rand.
2067 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2068 val
= (random () ^ (val
<< RAND_BITS
)
2069 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2070 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2071 return val
& INTMASK
;
2074 #ifndef HAVE_SNPRINTF
2075 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2077 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2079 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2080 ptrdiff_t nbytes
= size
- 1;
2085 va_start (ap
, format
);
2086 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2090 if (nbytes
== size
- 1)
2092 /* Calculate the length of the string that would have been created
2093 had the buffer been large enough. */
2094 char stackbuf
[4000];
2096 ptrdiff_t bsize
= sizeof stackbuf
;
2097 va_start (ap
, format
);
2098 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2104 if (INT_MAX
< nbytes
)
2117 /* If a backtrace is available, output the top lines of it to stderr.
2118 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2119 This function may be called from a signal handler, so it should
2120 not invoke async-unsafe functions like malloc. */
2122 emacs_backtrace (int backtrace_limit
)
2124 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2125 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2129 if (thread_backtrace_npointers
)
2131 buffer
= thread_backtrace_buffer
;
2132 npointers
= thread_backtrace_npointers
;
2136 buffer
= main_backtrace_buffer
;
2137 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2142 emacs_write (STDERR_FILENO
, "\nBacktrace:\n", 12);
2143 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2144 if (bounded_limit
< npointers
)
2145 emacs_write (STDERR_FILENO
, "...\n", 4);
2153 terminate_due_to_signal (SIGABRT
, 40);
2157 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2158 Arrange for subprograms to not inherit the file descriptor.
2159 Prefer a method that is multithread-safe, if available.
2160 Do not fail merely because the open was interrupted by a signal.
2161 Allow the user to quit. */
2164 emacs_open (const char *file
, int oflags
, int mode
)
2167 oflags
|= O_CLOEXEC
;
2168 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2170 if (! O_CLOEXEC
&& 0 <= fd
)
2171 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2175 /* Open FILE as a stream for Emacs use, with mode MODE.
2176 Act like emacs_open with respect to threads, signals, and quits. */
2179 emacs_fopen (char const *file
, char const *mode
)
2181 int fd
, omode
, oflags
;
2183 char const *m
= mode
;
2187 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2188 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2189 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2190 default: emacs_abort ();
2196 case '+': omode
= O_RDWR
; break;
2197 case 'b': bflag
= O_BINARY
; break;
2198 case 't': bflag
= O_TEXT
; break;
2199 default: /* Ignore. */ break;
2202 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2203 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2206 /* Create a pipe for Emacs use. */
2209 emacs_pipe (int fd
[2])
2214 int result
= pipe2 (fd
, O_CLOEXEC
);
2215 if (! O_CLOEXEC
&& result
== 0)
2217 fcntl (fd
[0], F_SETFD
, FD_CLOEXEC
);
2218 fcntl (fd
[1], F_SETFD
, FD_CLOEXEC
);
2224 /* Approximate posix_close and POSIX_CLOSE_RESTART well enough for Emacs.
2225 For the background behind this mess, please see Austin Group defect 529
2226 <http://austingroupbugs.net/view.php?id=529>. */
2228 #ifndef POSIX_CLOSE_RESTART
2229 # define POSIX_CLOSE_RESTART 1
2231 posix_close (int fd
, int flag
)
2233 /* Only the POSIX_CLOSE_RESTART case is emulated. */
2234 eassert (flag
== POSIX_CLOSE_RESTART
);
2236 /* Things are tricky if close (fd) returns -1 with errno == EINTR
2237 on a system that does not define POSIX_CLOSE_RESTART.
2239 In this case, in some systems (e.g., GNU/Linux, AIX) FD is
2240 closed, and retrying the close could inadvertently close a file
2241 descriptor allocated by some other thread. In other systems
2242 (e.g., HP/UX) FD is not closed. And in still other systems
2243 (e.g., OS X, Solaris), maybe FD is closed, maybe not, and in a
2244 multithreaded program there can be no way to tell.
2246 So, in this case, pretend that the close succeeded. This works
2247 well on systems like GNU/Linux that close FD. Although it may
2248 leak a file descriptor on other systems, the leak is unlikely and
2249 it's better to leak than to close a random victim. */
2250 return close (fd
) == 0 || errno
== EINTR
? 0 : -1;
2254 /* Close FD, retrying if interrupted. If successful, return 0;
2255 otherwise, return -1 and set errno to a non-EINTR value. Consider
2256 an EINPROGRESS error to be successful, as that's merely a signal
2257 arriving. FD is always closed when this function returns, even
2260 Do not call this function if FD is nonnegative and might already be closed,
2261 as that might close an innocent victim opened by some other thread. */
2264 emacs_close (int fd
)
2268 int r
= posix_close (fd
, POSIX_CLOSE_RESTART
);
2271 if (!POSIX_CLOSE_RESTART
|| errno
!= EINTR
)
2273 eassert (errno
!= EBADF
|| fd
< 0);
2274 return errno
== EINPROGRESS
? 0 : r
;
2279 /* Maximum number of bytes to read or write in a single system call.
2280 This works around a serious bug in Linux kernels before 2.6.16; see
2281 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2282 It's likely to work around similar bugs in other operating systems, so do it
2283 on all platforms. Round INT_MAX down to a page size, with the conservative
2284 assumption that page sizes are at most 2**18 bytes (any kernel with a
2285 page size larger than that shouldn't have the bug). */
2286 #ifndef MAX_RW_COUNT
2287 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2290 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2291 Return the number of bytes read, which might be less than NBYTE.
2292 On error, set errno and return -1. */
2294 emacs_read (int fildes
, void *buf
, ptrdiff_t nbyte
)
2298 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2299 passes a size that large to emacs_read. */
2301 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2302 && (errno
== EINTR
))
2307 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2308 or if a partial write occurs. If interrupted, process pending
2309 signals if PROCESS SIGNALS. Return the number of bytes written, setting
2310 errno if this is less than NBYTE. */
2312 emacs_full_write (int fildes
, char const *buf
, ptrdiff_t nbyte
,
2313 bool process_signals
)
2315 ptrdiff_t bytes_written
= 0;
2319 ssize_t n
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2325 /* I originally used `QUIT' but that might causes files to
2326 be truncated if you hit C-g in the middle of it. --Stef */
2327 if (process_signals
&& pending_signals
)
2328 process_pending_signals ();
2340 return bytes_written
;
2343 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if
2344 interrupted or if a partial write occurs. Return the number of
2345 bytes written, setting errno if this is less than NBYTE. */
2347 emacs_write (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2349 return emacs_full_write (fildes
, buf
, nbyte
, 0);
2352 /* Like emacs_write, but also process pending signals if interrupted. */
2354 emacs_write_sig (int fildes
, void const *buf
, ptrdiff_t nbyte
)
2356 return emacs_full_write (fildes
, buf
, nbyte
, 1);
2359 /* Write a diagnostic to standard error that contains MESSAGE and a
2360 string derived from errno. Preserve errno. Do not buffer stderr.
2361 Do not process pending signals if interrupted. */
2363 emacs_perror (char const *message
)
2366 char const *error_string
= strerror (err
);
2367 char const *command
= (initial_argv
&& initial_argv
[0]
2368 ? initial_argv
[0] : "emacs");
2369 /* Write it out all at once, if it's short; this is less likely to
2370 be interleaved with other output. */
2372 int nbytes
= snprintf (buf
, sizeof buf
, "%s: %s: %s\n",
2373 command
, message
, error_string
);
2374 if (0 <= nbytes
&& nbytes
< BUFSIZ
)
2375 emacs_write (STDERR_FILENO
, buf
, nbytes
);
2378 emacs_write (STDERR_FILENO
, command
, strlen (command
));
2379 emacs_write (STDERR_FILENO
, ": ", 2);
2380 emacs_write (STDERR_FILENO
, message
, strlen (message
));
2381 emacs_write (STDERR_FILENO
, ": ", 2);
2382 emacs_write (STDERR_FILENO
, error_string
, strlen (error_string
));
2383 emacs_write (STDERR_FILENO
, "\n", 1);
2388 /* Return a struct timeval that is roughly equivalent to T.
2389 Use the least timeval not less than T.
2390 Return an extremal value if the result would overflow. */
2392 make_timeval (struct timespec t
)
2395 tv
.tv_sec
= t
.tv_sec
;
2396 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2398 if (t
.tv_nsec
% 1000 != 0)
2400 if (tv
.tv_usec
< 999999)
2402 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2412 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2413 ATIME and MTIME, respectively.
2414 FD must be either negative -- in which case it is ignored --
2415 or a file descriptor that is open on FILE.
2416 If FD is nonnegative, then FILE can be NULL. */
2418 set_file_times (int fd
, const char *filename
,
2419 struct timespec atime
, struct timespec mtime
)
2421 struct timespec timespec
[2];
2422 timespec
[0] = atime
;
2423 timespec
[1] = mtime
;
2424 return fdutimens (fd
, filename
, timespec
);
2427 /* Like strsignal, except async-signal-safe, and this function typically
2428 returns a string in the C locale rather than the current locale. */
2430 safe_strsignal (int code
)
2432 char const *signame
= 0;
2434 if (0 <= code
&& code
< sys_siglist_entries
)
2435 signame
= sys_siglist
[code
];
2437 signame
= "Unknown signal";
2443 /* For make-serial-process */
2445 serial_open (Lisp_Object port
)
2447 int fd
= emacs_open (SSDATA (port
), O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2449 report_file_error ("Opening serial port", port
);
2451 ioctl (fd
, TIOCEXCL
, (char *) 0);
2457 #if !defined (HAVE_CFMAKERAW)
2458 /* Workaround for targets which are missing cfmakeraw. */
2459 /* Pasted from man page. */
2461 cfmakeraw (struct termios
*termios_p
)
2463 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2464 termios_p
->c_oflag
&= ~OPOST
;
2465 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2466 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2467 termios_p
->c_cflag
|= CS8
;
2469 #endif /* !defined (HAVE_CFMAKERAW */
2471 #if !defined (HAVE_CFSETSPEED)
2472 /* Workaround for targets which are missing cfsetspeed. */
2474 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2476 return (cfsetispeed (termios_p
, vitesse
)
2477 + cfsetospeed (termios_p
, vitesse
));
2481 /* For serial-process-configure */
2483 serial_configure (struct Lisp_Process
*p
,
2484 Lisp_Object contact
)
2486 Lisp_Object childp2
= Qnil
;
2487 Lisp_Object tem
= Qnil
;
2488 struct termios attr
;
2490 char summary
[4] = "???"; /* This usually becomes "8N1". */
2492 childp2
= Fcopy_sequence (p
->childp
);
2494 /* Read port attributes and prepare default configuration. */
2495 err
= tcgetattr (p
->outfd
, &attr
);
2497 report_file_error ("Failed tcgetattr", Qnil
);
2499 #if defined (CLOCAL)
2500 attr
.c_cflag
|= CLOCAL
;
2503 attr
.c_cflag
|= CREAD
;
2506 /* Configure speed. */
2507 if (!NILP (Fplist_member (contact
, QCspeed
)))
2508 tem
= Fplist_get (contact
, QCspeed
);
2510 tem
= Fplist_get (p
->childp
, QCspeed
);
2512 err
= cfsetspeed (&attr
, XINT (tem
));
2514 report_file_error ("Failed cfsetspeed", tem
);
2515 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2517 /* Configure bytesize. */
2518 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2519 tem
= Fplist_get (contact
, QCbytesize
);
2521 tem
= Fplist_get (p
->childp
, QCbytesize
);
2523 tem
= make_number (8);
2525 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2526 error (":bytesize must be nil (8), 7, or 8");
2527 summary
[0] = XINT (tem
) + '0';
2528 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2529 attr
.c_cflag
&= ~CSIZE
;
2530 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2532 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2533 if (XINT (tem
) != 8)
2534 error ("Bytesize cannot be changed");
2536 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2538 /* Configure parity. */
2539 if (!NILP (Fplist_member (contact
, QCparity
)))
2540 tem
= Fplist_get (contact
, QCparity
);
2542 tem
= Fplist_get (p
->childp
, QCparity
);
2543 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2544 error (":parity must be nil (no parity), `even', or `odd'");
2545 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2546 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2547 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2552 else if (EQ (tem
, Qeven
))
2555 attr
.c_cflag
|= PARENB
;
2556 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2558 else if (EQ (tem
, Qodd
))
2561 attr
.c_cflag
|= (PARENB
| PARODD
);
2562 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2565 /* Don't error on no parity, which should be set by cfmakeraw. */
2567 error ("Parity cannot be configured");
2569 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2571 /* Configure stopbits. */
2572 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2573 tem
= Fplist_get (contact
, QCstopbits
);
2575 tem
= Fplist_get (p
->childp
, QCstopbits
);
2577 tem
= make_number (1);
2579 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2580 error (":stopbits must be nil (1 stopbit), 1, or 2");
2581 summary
[2] = XINT (tem
) + '0';
2582 #if defined (CSTOPB)
2583 attr
.c_cflag
&= ~CSTOPB
;
2584 if (XINT (tem
) == 2)
2585 attr
.c_cflag
|= CSTOPB
;
2587 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2588 if (XINT (tem
) != 1)
2589 error ("Stopbits cannot be configured");
2591 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2593 /* Configure flowcontrol. */
2594 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2595 tem
= Fplist_get (contact
, QCflowcontrol
);
2597 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2598 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2599 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2600 #if defined (CRTSCTS)
2601 attr
.c_cflag
&= ~CRTSCTS
;
2603 #if defined (CNEW_RTSCTS)
2604 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2606 #if defined (IXON) && defined (IXOFF)
2607 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2611 /* Already configured. */
2613 else if (EQ (tem
, Qhw
))
2615 #if defined (CRTSCTS)
2616 attr
.c_cflag
|= CRTSCTS
;
2617 #elif defined (CNEW_RTSCTS)
2618 attr
.c_cflag
|= CNEW_RTSCTS
;
2620 error ("Hardware flowcontrol (RTS/CTS) not supported");
2623 else if (EQ (tem
, Qsw
))
2625 #if defined (IXON) && defined (IXOFF)
2626 attr
.c_iflag
|= (IXON
| IXOFF
);
2628 error ("Software flowcontrol (XON/XOFF) not supported");
2631 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2633 /* Activate configuration. */
2634 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2636 report_file_error ("Failed tcsetattr", Qnil
);
2638 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2639 pset_childp (p
, childp2
);
2641 #endif /* not DOS_NT */
2643 /* System depended enumeration of and access to system processes a-la ps(1). */
2647 /* Process enumeration and access via /proc. */
2650 list_system_processes (void)
2652 Lisp_Object procdir
, match
, proclist
, next
;
2653 struct gcpro gcpro1
, gcpro2
;
2654 register Lisp_Object tail
;
2656 GCPRO2 (procdir
, match
);
2657 /* For every process on the system, there's a directory in the
2658 "/proc" pseudo-directory whose name is the numeric ID of that
2660 procdir
= build_string ("/proc");
2661 match
= build_string ("[0-9]+");
2662 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2664 /* `proclist' gives process IDs as strings. Destructively convert
2665 each string into a number. */
2666 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2669 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2673 /* directory_files_internal returns the files in reverse order; undo
2675 proclist
= Fnreverse (proclist
);
2679 #elif defined DARWIN_OS || defined __FreeBSD__
2682 list_system_processes (void)
2685 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2687 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2690 struct kinfo_proc
*procs
;
2693 struct gcpro gcpro1
;
2694 Lisp_Object proclist
= Qnil
;
2696 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2699 procs
= xmalloc (len
);
2700 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2707 len
/= sizeof (struct kinfo_proc
);
2708 for (i
= 0; i
< len
; i
++)
2711 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2713 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2723 /* The WINDOWSNT implementation is in w32.c.
2724 The MSDOS implementation is in dosfns.c. */
2725 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2728 list_system_processes (void)
2733 #endif /* !defined (WINDOWSNT) */
2735 #if defined GNU_LINUX && defined HAVE_LONG_LONG_INT
2736 static struct timespec
2737 time_from_jiffies (unsigned long long tval
, long hz
)
2739 unsigned long long s
= tval
/ hz
;
2740 unsigned long long frac
= tval
% hz
;
2743 if (TYPE_MAXIMUM (time_t) < s
)
2745 if (LONG_MAX
- 1 <= ULLONG_MAX
/ TIMESPEC_RESOLUTION
2746 || frac
<= ULLONG_MAX
/ TIMESPEC_RESOLUTION
)
2747 ns
= frac
* TIMESPEC_RESOLUTION
/ hz
;
2750 /* This is reachable only in the unlikely case that HZ * HZ
2751 exceeds ULLONG_MAX. It calculates an approximation that is
2752 guaranteed to be in range. */
2753 long hz_per_ns
= (hz
/ TIMESPEC_RESOLUTION
2754 + (hz
% TIMESPEC_RESOLUTION
!= 0));
2755 ns
= frac
/ hz_per_ns
;
2758 return make_timespec (s
, ns
);
2762 ltime_from_jiffies (unsigned long long tval
, long hz
)
2764 struct timespec t
= time_from_jiffies (tval
, hz
);
2765 return make_lisp_time (t
);
2768 static struct timespec
2772 struct timespec up
= make_timespec (0, 0);
2775 fup
= emacs_fopen ("/proc/uptime", "r");
2779 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2780 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2782 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2783 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2784 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2787 if (TYPE_MAXIMUM (time_t) < upsec
)
2789 upsec
= TYPE_MAXIMUM (time_t);
2790 upfrac
= TIMESPEC_RESOLUTION
- 1;
2794 int upfraclen
= upfrac_end
- upfrac_start
;
2795 for (; upfraclen
< LOG10_TIMESPEC_RESOLUTION
; upfraclen
++)
2797 for (; LOG10_TIMESPEC_RESOLUTION
< upfraclen
; upfraclen
--)
2799 upfrac
= min (upfrac
, TIMESPEC_RESOLUTION
- 1);
2801 up
= make_timespec (upsec
, upfrac
);
2810 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2811 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2814 procfs_ttyname (int rdev
)
2817 char name
[PATH_MAX
];
2820 fdev
= emacs_fopen ("/proc/tty/drivers", "r");
2826 unsigned long minor_beg
, minor_end
;
2827 char minor
[25]; /* 2 32-bit numbers + dash */
2830 for (; !feof (fdev
) && !ferror (fdev
); name
[0] = 0)
2832 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2833 && major
== MAJOR (rdev
))
2835 minor_beg
= strtoul (minor
, &endp
, 0);
2837 minor_end
= minor_beg
;
2838 else if (*endp
== '-')
2839 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2843 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2845 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2853 return build_string (name
);
2857 procfs_get_total_memory (void)
2860 uintmax_t retval
= 2 * 1024 * 1024; /* default: 2 GiB */
2864 fmem
= emacs_fopen ("/proc/meminfo", "r");
2868 uintmax_t entry_value
;
2872 switch (fscanf (fmem
, "MemTotal: %"SCNuMAX
, &entry_value
))
2875 retval
= entry_value
;
2880 while ((c
= getc (fmem
)) != EOF
&& c
!= '\n')
2898 system_process_attributes (Lisp_Object pid
)
2900 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2904 long clocks_per_sec
;
2906 char procbuf
[1025], *p
, *q
;
2909 static char const default_cmd
[] = "???";
2910 const char *cmd
= default_cmd
;
2911 int cmdsize
= sizeof default_cmd
- 1;
2912 char *cmdline
= NULL
;
2913 ptrdiff_t cmdline_size
;
2916 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2919 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2920 long priority
, niceness
, rss
;
2921 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2922 struct timespec tnow
, tstart
, tboot
, telapsed
, us_time
;
2924 Lisp_Object attrs
= Qnil
;
2925 Lisp_Object cmd_str
, decoded_cmd
;
2927 struct gcpro gcpro1
, gcpro2
;
2929 CHECK_NUMBER_OR_FLOAT (pid
);
2930 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2931 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2932 if (stat (procfn
, &st
) < 0)
2935 GCPRO2 (attrs
, decoded_cmd
);
2939 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2941 pw
= getpwuid (uid
);
2944 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2947 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2949 gr
= getgrgid (gid
);
2952 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2954 count
= SPECPDL_INDEX ();
2955 strcpy (fn
, procfn
);
2956 procfn_end
= fn
+ strlen (fn
);
2957 strcpy (procfn_end
, "/stat");
2958 fd
= emacs_open (fn
, O_RDONLY
, 0);
2963 record_unwind_protect_int (close_file_unwind
, fd
);
2964 nread
= emacs_read (fd
, procbuf
, sizeof procbuf
- 1);
2968 procbuf
[nread
] = '\0';
2971 p
= strchr (p
, '(');
2974 q
= strrchr (p
+ 1, ')');
2984 /* Command name is encoded in locale-coding-system; decode it. */
2985 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2986 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2987 Vlocale_coding_system
, 0);
2988 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2990 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt
2991 utime stime cutime cstime priority nice thcount . start vsize rss */
2993 && (sscanf (q
+ 2, ("%c %d %d %d %d %d %*u %lu %lu %lu %lu "
2994 "%Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld"),
2995 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2996 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2997 &u_time
, &s_time
, &cutime
, &cstime
,
2998 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
)
3003 state_str
[1] = '\0';
3004 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3005 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid
)), attrs
);
3006 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp
)), attrs
);
3007 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess
)), attrs
);
3008 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
3009 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid
)), attrs
);
3010 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
3011 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
3012 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)),
3014 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)),
3016 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
3017 if (clocks_per_sec
< 0)
3018 clocks_per_sec
= 100;
3019 attrs
= Fcons (Fcons (Qutime
,
3020 ltime_from_jiffies (u_time
, clocks_per_sec
)),
3022 attrs
= Fcons (Fcons (Qstime
,
3023 ltime_from_jiffies (s_time
, clocks_per_sec
)),
3025 attrs
= Fcons (Fcons (Qtime
,
3026 ltime_from_jiffies (s_time
+ u_time
,
3029 attrs
= Fcons (Fcons (Qcutime
,
3030 ltime_from_jiffies (cutime
, clocks_per_sec
)),
3032 attrs
= Fcons (Fcons (Qcstime
,
3033 ltime_from_jiffies (cstime
, clocks_per_sec
)),
3035 attrs
= Fcons (Fcons (Qctime
,
3036 ltime_from_jiffies (cstime
+ cutime
,
3039 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
3040 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
3041 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount
)),
3043 tnow
= current_timespec ();
3044 telapsed
= get_up_time ();
3045 tboot
= timespec_sub (tnow
, telapsed
);
3046 tstart
= time_from_jiffies (start
, clocks_per_sec
);
3047 tstart
= timespec_add (tboot
, tstart
);
3048 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
3049 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/ 1024)),
3051 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4 * rss
)), attrs
);
3052 telapsed
= timespec_sub (tnow
, tstart
);
3053 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
3054 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
3055 pcpu
= timespectod (us_time
) / timespectod (telapsed
);
3058 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
3059 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
3062 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3065 unbind_to (count
, Qnil
);
3068 strcpy (procfn_end
, "/cmdline");
3069 fd
= emacs_open (fn
, O_RDONLY
, 0);
3072 ptrdiff_t readsize
, nread_incr
;
3073 record_unwind_protect_int (close_file_unwind
, fd
);
3074 record_unwind_protect_nothing ();
3075 nread
= cmdline_size
= 0;
3079 cmdline
= xpalloc (cmdline
, &cmdline_size
, 2, STRING_BYTES_BOUND
, 1);
3080 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3082 /* Leave room even if every byte needs escaping below. */
3083 readsize
= (cmdline_size
>> 1) - nread
;
3085 nread_incr
= emacs_read (fd
, cmdline
+ nread
, readsize
);
3086 nread
+= max (0, nread_incr
);
3088 while (nread_incr
== readsize
);
3092 /* We don't want trailing null characters. */
3093 for (p
= cmdline
+ nread
; cmdline
< p
&& !p
[-1]; p
--)
3096 /* Escape-quote whitespace and backslashes. */
3097 q
= cmdline
+ cmdline_size
;
3102 if (c_isspace (c
) || c
== '\\')
3106 nread
= cmdline
+ cmdline_size
- q
;
3111 nread
= cmdsize
+ 2;
3112 cmdline_size
= nread
+ 1;
3113 q
= cmdline
= xrealloc (cmdline
, cmdline_size
);
3114 set_unwind_protect_ptr (count
+ 1, xfree
, cmdline
);
3115 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3117 /* Command line is encoded in locale-coding-system; decode it. */
3118 cmd_str
= make_unibyte_string (q
, nread
);
3119 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3120 Vlocale_coding_system
, 0);
3121 unbind_to (count
, Qnil
);
3122 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3129 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3131 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3132 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3133 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3134 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3135 #undef _FILE_OFFSET_BITS
3137 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3142 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3143 #define _FILE_OFFSET_BITS 64
3144 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3146 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3149 system_process_attributes (Lisp_Object pid
)
3151 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3156 struct psinfo pinfo
;
3162 Lisp_Object attrs
= Qnil
;
3163 Lisp_Object decoded_cmd
;
3164 struct gcpro gcpro1
, gcpro2
;
3167 CHECK_NUMBER_OR_FLOAT (pid
);
3168 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3169 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3170 if (stat (procfn
, &st
) < 0)
3173 GCPRO2 (attrs
, decoded_cmd
);
3177 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3179 pw
= getpwuid (uid
);
3182 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3185 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3187 gr
= getgrgid (gid
);
3190 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3192 count
= SPECPDL_INDEX ();
3193 strcpy (fn
, procfn
);
3194 procfn_end
= fn
+ strlen (fn
);
3195 strcpy (procfn_end
, "/psinfo");
3196 fd
= emacs_open (fn
, O_RDONLY
, 0);
3201 record_unwind_protect (close_file_unwind
, fd
);
3202 nread
= emacs_read (fd
, &pinfo
, sizeof pinfo
);
3205 if (nread
== sizeof pinfo
)
3207 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3208 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3209 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3213 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3214 state_str
[1] = '\0';
3215 attrs
= Fcons (Fcons (Qstate
, build_string (state_str
)), attrs
);
3218 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3219 need to get a string from it. */
3221 /* FIXME: missing: Qtpgid */
3233 Are they available? */
3235 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3236 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3237 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3238 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3239 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)),
3242 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3243 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)),
3245 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)),
3248 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3249 range 0 .. 2**15, representing 0.0 .. 1.0. */
3250 attrs
= Fcons (Fcons (Qpcpu
,
3251 make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)),
3253 attrs
= Fcons (Fcons (Qpmem
,
3254 make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)),
3257 decoded_cmd
= (code_convert_string_norecord
3258 (build_unibyte_string (pinfo
.pr_fname
),
3259 Vlocale_coding_system
, 0));
3260 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3261 decoded_cmd
= (code_convert_string_norecord
3262 (build_unibyte_string (pinfo
.pr_psargs
),
3263 Vlocale_coding_system
, 0));
3264 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3266 unbind_to (count
, Qnil
);
3271 #elif defined __FreeBSD__
3273 static struct timespec
3274 timeval_to_timespec (struct timeval t
)
3276 return make_timespec (t
.tv_sec
, t
.tv_usec
* 1000);
3280 make_lisp_timeval (struct timeval t
)
3282 return make_lisp_time (timeval_to_timespec (t
));
3286 system_process_attributes (Lisp_Object pid
)
3289 int pagesize
= getpagesize ();
3290 unsigned long npages
;
3296 char args
[MAXPATHLEN
];
3297 struct timespec t
, now
;
3299 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3300 struct kinfo_proc proc
;
3301 size_t proclen
= sizeof proc
;
3303 struct gcpro gcpro1
, gcpro2
;
3304 Lisp_Object attrs
= Qnil
;
3305 Lisp_Object decoded_comm
;
3307 CHECK_NUMBER_OR_FLOAT (pid
);
3308 CONS_TO_INTEGER (pid
, int, proc_id
);
3311 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3314 GCPRO2 (attrs
, decoded_comm
);
3316 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3319 pw
= getpwuid (proc
.ki_uid
);
3322 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3324 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3327 gr
= getgrgid (proc
.ki_svgid
);
3330 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3332 decoded_comm
= (code_convert_string_norecord
3333 (build_unibyte_string (proc
.ki_comm
),
3334 Vlocale_coding_system
, 0));
3336 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3338 char state
[2] = {'\0', '\0'};
3339 switch (proc
.ki_stat
)
3361 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3364 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3365 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3366 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3369 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3372 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3374 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3375 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3376 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3377 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3378 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3380 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3382 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3384 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage
.ru_utime
),
3385 timeval_to_timespec (proc
.ki_rusage
.ru_stime
));
3386 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3388 attrs
= Fcons (Fcons (Qcutime
,
3389 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3391 attrs
= Fcons (Fcons (Qcstime
,
3392 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3394 t
= timespec_add (timeval_to_timespec (proc
.ki_rusage_ch
.ru_utime
),
3395 timeval_to_timespec (proc
.ki_rusage_ch
.ru_stime
));
3396 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3398 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3400 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3401 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3402 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3403 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3404 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3407 now
= current_timespec ();
3408 t
= timespec_sub (now
, timeval_to_timespec (proc
.ki_start
));
3409 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3411 len
= sizeof fscale
;
3412 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3417 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3419 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3420 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3421 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3425 len
= sizeof npages
;
3426 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3428 double pmem
= (proc
.ki_flag
& P_INMEM
3429 ? 100.0 * proc
.ki_rssize
/ npages
3431 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3434 mib
[2] = KERN_PROC_ARGS
;
3436 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3439 for (i
= 0; i
< len
; i
++)
3441 if (! args
[i
] && i
< len
- 1)
3446 (code_convert_string_norecord
3447 (build_unibyte_string (args
),
3448 Vlocale_coding_system
, 0));
3450 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3457 /* The WINDOWSNT implementation is in w32.c.
3458 The MSDOS implementation is in dosfns.c. */
3459 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3462 system_process_attributes (Lisp_Object pid
)
3467 #endif /* !defined (WINDOWSNT) */