1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2012
3 Free Software Foundation, Inc.
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/>. */
22 #define SYSTIME_INLINE EXTERN_INLINE
29 #endif /* HAVE_PWD_H */
33 #include <allocator.h>
35 #include <careadlinkat.h>
36 #include <ignore-value.h>
40 #include "sysselect.h"
41 #include "blockinput.h"
44 #include <sys/param.h>
45 #include <sys/sysctl.h>
50 #include <sys/resource.h>
56 #define write sys_write
58 #endif /* not WINDOWSNT */
60 #include <sys/types.h>
64 /* Get SI_SRPC_DOMAIN, if it is available. */
65 #ifdef HAVE_SYS_SYSTEMINFO_H
66 #include <sys/systeminfo.h>
69 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
71 #include <sys/param.h>
80 #ifdef HAVE_SYS_UTSNAME_H
81 #include <sys/utsname.h>
83 #endif /* HAVE_SYS_UTSNAME_H */
88 #include "termhooks.h"
91 #include "dispextern.h"
93 #include "cm.h" /* for reset_sys_modes */
97 /* In process.h which conflicts with the local copy. */
99 int _cdecl
_spawnlp (int, const char *, const char *, ...);
100 int _cdecl
_getpid (void);
101 extern char *getwd (char *);
104 #include "syssignal.h"
107 static int emacs_get_tty (int, struct emacs_tty
*);
108 static int emacs_set_tty (int, struct emacs_tty
*, int);
110 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
112 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
115 /* Declare here, including term.h is problematic on some systems. */
116 extern void tputs (const char *, int, int (*)(int));
118 static const int baud_convert
[] =
120 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
121 1800, 2400, 4800, 9600, 19200, 38400
125 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
127 /* Return the current working directory. Returns NULL on errors.
128 Any other returned value must be freed with free. This is used
129 only when get_current_dir_name is not defined on the system. */
131 get_current_dir_name (void)
135 struct stat dotstat
, pwdstat
;
136 /* If PWD is accurate, use it instead of calling getwd. PWD is
137 sometimes a nicer name, and using it may avoid a fatal error if a
138 parent directory is searchable but not readable. */
139 if ((pwd
= getenv ("PWD")) != 0
140 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
141 && stat (pwd
, &pwdstat
) == 0
142 && stat (".", &dotstat
) == 0
143 && dotstat
.st_ino
== pwdstat
.st_ino
144 && dotstat
.st_dev
== pwdstat
.st_dev
146 && strlen (pwd
) < MAXPATHLEN
150 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
);
182 /* We need MAXPATHLEN here. */
183 buf
= malloc (MAXPATHLEN
+ 1);
186 if (getwd (buf
) == NULL
)
188 int tmp_errno
= errno
;
200 /* Discard pending input on all input descriptors. */
203 discard_tty_input (void)
206 struct emacs_tty buf
;
211 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
212 while (dos_keyread () != -1)
214 #else /* not MSDOS */
216 struct tty_display_info
*tty
;
217 for (tty
= tty_list
; tty
; tty
= tty
->next
)
219 if (tty
->input
) /* Is the device suspended? */
221 emacs_get_tty (fileno (tty
->input
), &buf
);
222 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
226 #endif /* not MSDOS */
227 #endif /* not WINDOWSNT */
233 /* Arrange for character C to be read as the next input from
235 XXX What if we have multiple ttys?
241 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
244 /* Should perhaps error if in batch mode */
246 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
247 #else /* no TIOCSTI */
248 error ("Cannot stuff terminal input characters in this version of Unix");
249 #endif /* no TIOCSTI */
255 init_baud_rate (int fd
)
265 #else /* not DOS_NT */
270 emacs_ospeed
= cfgetospeed (&sg
);
271 #endif /* not DOS_NT */
274 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
275 ? baud_convert
[emacs_ospeed
] : 9600);
282 /* Set nonzero to make following function work under dbx
283 (at least for bsd). */
284 int wait_debugging EXTERNALLY_VISIBLE
;
289 wait_for_termination_1 (pid_t pid
, int interruptible
)
293 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__)
294 /* Note that kill returns -1 even if the process is just a zombie now.
295 But inevitably a SIGCHLD interrupt should be generated
296 and child_sig will do waitpid and make the process go away. */
297 /* There is some indication that there is a bug involved with
298 termination of subprocesses, perhaps involving a kernel bug too,
299 but no idea what it is. Just as a hunch we signal SIGCHLD to see
300 if that causes the problem to go away or get worse. */
301 sigset_t sigchild_mask
;
302 sigemptyset (&sigchild_mask
);
303 sigaddset (&sigchild_mask
, SIGCHLD
);
304 pthread_sigmask (SIG_SETMASK
, &sigchild_mask
, 0);
306 if (0 > kill (pid
, 0))
308 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
309 kill (getpid (), SIGCHLD
);
315 sigsuspend (&empty_mask
);
316 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
320 #else /* not WINDOWSNT */
322 sigemptyset (&blocked
);
323 sigaddset (&blocked
, SIGCHLD
);
324 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
326 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
328 pthread_sigmask (SIG_UNBLOCK
, &blocked
, 0);
332 sigsuspend (&empty_mask
);
333 #endif /* not WINDOWSNT */
334 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
340 /* Wait for subprocess with process id `pid' to terminate and
341 make sure it will get eliminated (not remain forever as a zombie) */
344 wait_for_termination (pid_t pid
)
346 wait_for_termination_1 (pid
, 0);
349 /* Like the above, but allow keyboard interruption. */
351 interruptible_wait_for_termination (pid_t pid
)
353 wait_for_termination_1 (pid
, 1);
357 * flush any pending output
358 * (may flush input as well; it does not matter the way we use it)
362 flush_pending_output (int channel
)
364 /* FIXME: maybe this function should be removed */
367 /* Set up the terminal at the other end of a pseudo-terminal that
368 we will be controlling an inferior through.
369 It should not echo or do line-editing, since that is done
370 in Emacs. No padding needed for insertion into an Emacs buffer. */
373 child_setup_tty (int out
)
378 emacs_get_tty (out
, &s
);
379 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
380 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
382 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
383 Some versions of GNU Hurd do not have FFDLY? */
385 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
386 /* No output delays */
388 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
389 /* No output delays */
392 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
393 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
395 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
398 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
401 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
403 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
404 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
405 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
406 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
409 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
412 #ifdef SIGNALS_VIA_CHARACTERS
413 /* the QUIT and INTR character are used in process_send_signal
414 so set them here to something useful. */
415 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
416 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
417 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
418 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
419 #endif /* not SIGNALS_VIA_CHARACTERS */
422 /* Also, PTY overloads NUL and BREAK.
423 don't ignore break, but don't signal either, so it looks like NUL. */
424 s
.main
.c_iflag
&= ~IGNBRK
;
425 s
.main
.c_iflag
&= ~BRKINT
;
426 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
427 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
428 would force it to 0377. That looks like duplicated code. */
429 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
432 /* We originally enabled ICANON (and set VEOF to 04), and then had
433 process.c send additional EOF chars to flush the output when faced
434 with long lines, but this leads to weird effects when the
435 subprocess has disabled ICANON and ends up seeing those spurious
436 extra EOFs. So we don't send EOFs any more in
437 process.c:send_process. First we tried to disable ICANON by
438 default, so if a subsprocess sets up ICANON, it's his problem (or
439 the Elisp package that talks to it) to deal with lines that are
440 too long. But this disables some features, such as the ability
441 to send EOF signals. So we re-enabled ICANON but there is no
442 more "send eof to flush" going on (which is wrong and unportable
443 in itself). The correct way to handle too much output is to
444 buffer what could not be written and then write it again when
445 select returns ok for writing. This has it own set of
446 problems. Write is now asynchronous, is that a problem? How much
447 do we buffer, and what do we do when that limit is reached? */
449 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
450 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
451 #if 0 /* These settings only apply to non-ICANON mode. */
452 s
.main
.c_cc
[VMIN
] = 1;
453 s
.main
.c_cc
[VTIME
] = 0;
456 emacs_set_tty (out
, &s
, 0);
457 #endif /* not WINDOWSNT */
459 #endif /* not MSDOS */
462 /* Record a signal code and the action for it. */
466 struct sigaction action
;
469 static void save_signal_handlers (struct save_signal
*);
470 static void restore_signal_handlers (struct save_signal
*);
472 /* Suspend the Emacs process; give terminal to its superior. */
477 #if defined (SIGTSTP) && !defined (MSDOS)
480 int pgrp
= EMACS_GETPGRP (0);
481 EMACS_KILLPG (pgrp
, SIGTSTP
);
484 #else /* No SIGTSTP */
485 /* On a system where suspending is not implemented,
486 instead fork a subshell and let it talk directly to the terminal
490 #endif /* no SIGTSTP */
493 /* Fork a subshell. */
498 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
500 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
503 struct save_signal saved_handlers
[5];
505 unsigned char *volatile str_volatile
= 0;
509 saved_handlers
[0].code
= SIGINT
;
510 saved_handlers
[1].code
= SIGQUIT
;
511 saved_handlers
[2].code
= SIGTERM
;
513 saved_handlers
[3].code
= SIGIO
;
514 saved_handlers
[4].code
= 0;
516 saved_handlers
[3].code
= 0;
519 /* Mentioning current_buffer->buffer would mean including buffer.h,
520 which somehow wedges the hp compiler. So instead... */
522 dir
= intern ("default-directory");
523 if (NILP (Fboundp (dir
)))
525 dir
= Fsymbol_value (dir
);
529 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
530 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
532 memcpy (str
, SDATA (dir
), len
);
533 if (str
[len
- 1] != '/') str
[len
++] = '/';
539 save_signal_handlers (saved_handlers
);
540 synch_process_alive
= 1;
544 error ("Can't spawn subshell");
551 #ifdef DOS_NT /* MW, Aug 1993 */
554 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
557 sh
= (char *) egetenv ("SHELL");
561 /* Use our buffer's default directory for the subshell. */
563 if (str
&& chdir ((char *) str
) != 0)
566 ignore_value (write (1, "Can't chdir\n", 12));
571 close_process_descs (); /* Close Emacs's pipes/ptys */
573 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
575 char *epwd
= getenv ("PWD");
576 char old_pwd
[MAXPATHLEN
+1+4];
578 /* If PWD is set, pass it with corrected value. */
581 strcpy (old_pwd
, epwd
);
582 if (str
[len
- 1] == '/')
584 setenv ("PWD", str
, 1);
587 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
589 putenv (old_pwd
); /* restore previous value */
591 #else /* not MSDOS */
593 /* Waits for process completion */
594 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
595 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
597 write (1, "Can't execute subshell", 22);
598 #else /* not WINDOWSNT */
599 execlp (sh
, sh
, (char *) 0);
600 ignore_value (write (1, "Can't execute subshell", 22));
602 #endif /* not WINDOWSNT */
603 #endif /* not MSDOS */
606 /* Do this now if we did not do it before. */
608 save_signal_handlers (saved_handlers
);
609 synch_process_alive
= 1;
613 wait_for_termination (pid
);
615 restore_signal_handlers (saved_handlers
);
616 synch_process_alive
= 0;
620 save_signal_handlers (struct save_signal
*saved_handlers
)
622 while (saved_handlers
->code
)
624 struct sigaction action
;
625 emacs_sigaction_init (&action
, SIG_IGN
);
626 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
632 restore_signal_handlers (struct save_signal
*saved_handlers
)
634 while (saved_handlers
->code
)
636 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
642 static int old_fcntl_flags
[MAXDESC
];
649 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
650 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
651 interrupts_deferred
= 0;
659 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
672 sigemptyset (&unblocked
);
674 sigaddset (&unblocked
, SIGWINCH
);
676 sigaddset (&unblocked
, SIGIO
);
677 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
679 interrupts_deferred
= 0;
684 unrequest_sigio (void)
692 sigemptyset (&blocked
);
694 sigaddset (&blocked
, SIGWINCH
);
696 sigaddset (&blocked
, SIGIO
);
697 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
698 interrupts_deferred
= 1;
706 signal (SIGIO
, SIG_IGN
);
711 /* Getting and setting emacs_tty structures. */
713 /* Set *TC to the parameters associated with the terminal FD.
714 Return zero if all's well, or -1 if we ran into an error we
715 couldn't deal with. */
717 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
719 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
721 /* We have those nifty POSIX tcmumbleattr functions. */
722 memset (&settings
->main
, 0, sizeof (settings
->main
));
723 if (tcgetattr (fd
, &settings
->main
) < 0)
727 /* We have survived the tempest. */
732 /* Set the parameters of the tty on FD according to the contents of
733 *SETTINGS. If FLUSHP is non-zero, we discard input.
734 Return 0 if all went well, and -1 if anything failed. */
737 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
739 /* Set the primary parameters - baud rate, character size, etcetera. */
742 /* We have those nifty POSIX tcmumbleattr functions.
743 William J. Smith <wjs@wiis.wang.com> writes:
744 "POSIX 1003.1 defines tcsetattr to return success if it was
745 able to perform any of the requested actions, even if some
746 of the requested actions could not be performed.
747 We must read settings back to ensure tty setup properly.
748 AIX requires this to keep tty from hanging occasionally." */
749 /* This make sure that we don't loop indefinitely in here. */
750 for (i
= 0 ; i
< 10 ; i
++)
751 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
762 memset (&new, 0, sizeof (new));
763 /* Get the current settings, and see if they're what we asked for. */
764 tcgetattr (fd
, &new);
765 /* We cannot use memcmp on the whole structure here because under
766 * aix386 the termios structure has some reserved field that may
769 if ( new.c_iflag
== settings
->main
.c_iflag
770 && new.c_oflag
== settings
->main
.c_oflag
771 && new.c_cflag
== settings
->main
.c_cflag
772 && new.c_lflag
== settings
->main
.c_lflag
773 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
780 /* We have survived the tempest. */
787 static int old_fcntl_owner
[MAXDESC
];
788 #endif /* F_SETOWN */
790 /* This may also be defined in stdio,
791 but if so, this does no harm,
792 and using the same name avoids wasting the other one's space. */
795 unsigned char _sobuf
[BUFSIZ
+8];
800 /* Initialize the terminal mode on all tty devices that are currently
804 init_all_sys_modes (void)
806 struct tty_display_info
*tty
;
807 for (tty
= tty_list
; tty
; tty
= tty
->next
)
808 init_sys_modes (tty
);
811 /* Initialize the terminal mode on the given tty device. */
814 init_sys_modes (struct tty_display_info
*tty_out
)
816 struct emacs_tty tty
;
817 Lisp_Object terminal
;
819 Vtty_erase_char
= Qnil
;
824 if (!tty_out
->output
)
825 return; /* The tty is suspended. */
827 if (! tty_out
->old_tty
)
828 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
830 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
832 tty
= *tty_out
->old_tty
;
834 #if !defined (DOS_NT)
835 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
837 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
838 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
839 #ifdef INLCR /* I'm just being cautious,
840 since I can't check how widespread INLCR is--rms. */
841 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
844 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
846 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
847 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
849 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
851 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
852 if (tty_out
->flow_control
)
854 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
856 tty
.main
.c_iflag
&= ~IXANY
;
860 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
861 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
863 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
865 if (tty_out
->meta_key
)
867 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
868 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
872 XSETTERMINAL(terminal
, tty_out
->terminal
);
873 if (!NILP (Fcontrolling_tty_p (terminal
)))
875 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
876 /* Set up C-g for both SIGQUIT and SIGINT.
877 We don't know which we will get, but we handle both alike
878 so which one it really gives us does not matter. */
879 tty
.main
.c_cc
[VQUIT
] = quit_char
;
883 /* We normally don't get interrupt or quit signals from tty
884 devices other than our controlling terminal; therefore,
885 we must handle C-g as normal input. Unfortunately, this
886 means that the interrupt and quit feature must be
887 disabled on secondary ttys, or we would not even see the
890 Note that even though emacsclient could have special code
891 to pass SIGINT to Emacs, we should _not_ enable
892 interrupt/quit keys for emacsclient frames. This means
893 that we can't break out of loops in C code from a
894 secondary tty frame, but we can always decide what
895 display the C-g came from, which is more important from a
896 usability point of view. (Consider the case when two
897 people work together using the same Emacs instance.) */
898 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
899 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
901 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
902 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
904 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
909 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
912 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
914 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
915 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
918 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
921 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
922 #endif /* VREPRINT */
924 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
927 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
928 #endif /* VDISCARD */
930 if (tty_out
->flow_control
)
933 tty
.main
.c_cc
[VSTART
] = '\021';
936 tty
.main
.c_cc
[VSTOP
] = '\023';
942 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
945 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
950 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
951 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
952 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
953 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
954 if (tty_out
->flow_control
)
957 tty
.main
.c_cc
[VSTART
] = '\021';
960 tty
.main
.c_cc
[VSTOP
] = '\023';
963 /* Also, PTY overloads NUL and BREAK.
964 don't ignore break, but don't signal either, so it looks like NUL.
965 This really serves a purpose only if running in an XTERM window
966 or via TELNET or the like, but does no harm elsewhere. */
967 tty
.main
.c_iflag
&= ~IGNBRK
;
968 tty
.main
.c_iflag
&= ~BRKINT
;
970 #endif /* not DOS_NT */
972 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
973 if (!tty_out
->term_initted
)
974 internal_terminal_init ();
978 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
980 /* This code added to insure that, if flow-control is not to be used,
981 we have an unlocked terminal at the start. */
984 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
987 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
990 #if !defined (DOS_NT)
992 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
997 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1000 old_fcntl_owner
[fileno (tty_out
->input
)] =
1001 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1002 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1003 init_sigio (fileno (tty_out
->input
));
1005 if (gpm_tty
== tty_out
)
1007 /* Arrange for mouse events to give us SIGIO signals. */
1008 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1009 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1010 init_sigio (gpm_fd
);
1012 #endif /* HAVE_GPM */
1014 #endif /* F_GETOWN */
1015 #endif /* F_SETFL */
1018 /* This symbol is defined on recent USG systems.
1019 Someone says without this call USG won't really buffer the file
1020 even with a call to setbuf. */
1021 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1023 setbuf (tty_out
->output
, (char *) _sobuf
);
1026 if (tty_out
->terminal
->set_terminal_modes_hook
)
1027 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1029 if (!tty_out
->term_initted
)
1031 Lisp_Object tail
, frame
;
1032 FOR_EACH_FRAME (tail
, frame
)
1034 /* XXX This needs to be revised. */
1035 if (FRAME_TERMCAP_P (XFRAME (frame
))
1036 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1037 init_frame_faces (XFRAME (frame
));
1041 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1043 /* We used to call "direct_output_forward_char(0)" here,
1044 but it's not clear why, since it may not do anything anyway. */
1048 Lisp_Object tail
, frame
;
1050 FOR_EACH_FRAME (tail
, frame
)
1052 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1053 || FRAME_MSDOS_P (XFRAME (frame
)))
1054 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1055 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1059 tty_out
->term_initted
= 1;
1062 /* Return nonzero if safe to use tabs in output.
1063 At the time this is called, init_sys_modes has not been done yet. */
1066 tabs_safe_p (int fd
)
1068 struct emacs_tty etty
;
1070 emacs_get_tty (fd
, &etty
);
1073 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1074 #else /* not TABDLY */
1076 #endif /* not TABDLY */
1082 /* Get terminal size from system.
1083 Store number of lines into *HEIGHTP and width into *WIDTHP.
1084 We store 0 if there's no valid information. */
1087 get_tty_size (int fd
, int *widthp
, int *heightp
)
1089 #if defined TIOCGWINSZ
1092 struct winsize size
;
1094 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1095 *widthp
= *heightp
= 0;
1098 *widthp
= size
.ws_col
;
1099 *heightp
= size
.ws_row
;
1102 #elif defined TIOCGSIZE
1104 /* SunOS - style. */
1105 struct ttysize size
;
1107 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1108 *widthp
= *heightp
= 0;
1111 *widthp
= size
.ts_cols
;
1112 *heightp
= size
.ts_lines
;
1115 #elif defined WINDOWSNT
1117 CONSOLE_SCREEN_BUFFER_INFO info
;
1118 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1120 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1121 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1124 *widthp
= *heightp
= 0;
1128 *widthp
= ScreenCols ();
1129 *heightp
= ScreenRows ();
1131 #else /* system doesn't know size */
1139 /* Set the logical window size associated with descriptor FD
1140 to HEIGHT and WIDTH. This is used mainly with ptys. */
1143 set_window_size (int fd
, int height
, int width
)
1148 struct winsize size
;
1149 size
.ws_row
= height
;
1150 size
.ws_col
= width
;
1152 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1153 return 0; /* error */
1160 /* SunOS - style. */
1161 struct ttysize size
;
1162 size
.ts_lines
= height
;
1163 size
.ts_cols
= width
;
1165 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1171 #endif /* not SunOS-style */
1172 #endif /* not BSD-style */
1177 /* Prepare all terminal devices for exiting Emacs. */
1180 reset_all_sys_modes (void)
1182 struct tty_display_info
*tty
;
1183 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1184 reset_sys_modes (tty
);
1187 /* Prepare the terminal for closing it; move the cursor to the
1188 bottom of the frame, turn off interrupt-driven I/O, etc. */
1191 reset_sys_modes (struct tty_display_info
*tty_out
)
1198 if (!tty_out
->term_initted
)
1201 if (!tty_out
->output
)
1202 return; /* The tty is suspended. */
1204 /* Go to and clear the last line of the terminal. */
1206 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1208 /* Code adapted from tty_clear_end_of_line. */
1209 if (tty_out
->TS_clr_line
)
1211 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1214 { /* have to do it the hard way */
1216 tty_turn_off_insert (tty_out
);
1218 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1220 fputc (' ', tty_out
->output
);
1224 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1225 fflush (tty_out
->output
);
1227 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1228 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1231 /* Avoid possible loss of output when changing terminal modes. */
1232 fsync (fileno (tty_out
->output
));
1236 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1237 if (interrupt_input
)
1239 reset_sigio (fileno (tty_out
->input
));
1240 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1241 old_fcntl_owner
[fileno (tty_out
->input
)]);
1243 #endif /* F_SETOWN */
1245 fcntl (fileno (tty_out
->input
), F_SETFL
,
1246 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1248 #endif /* F_SETFL */
1250 if (tty_out
->old_tty
)
1251 while (emacs_set_tty (fileno (tty_out
->input
),
1252 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1255 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1263 /* Set up the proper status flags for use of a pty. */
1268 /* I'm told that TOICREMOTE does not mean control chars
1269 "can't be sent" but rather that they don't have
1270 input-editing or signaling effects.
1271 That should be good, because we have other ways
1272 to do those things in Emacs.
1273 However, telnet mode seems not to work on 4.2.
1274 So TIOCREMOTE is turned off now. */
1276 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1277 will hang. In particular, the "timeout" feature (which
1278 causes a read to return if there is no data available)
1279 does this. Also it is known that telnet mode will hang
1280 in such a way that Emacs must be stopped (perhaps this
1281 is the same problem).
1283 If TIOCREMOTE is turned off, then there is a bug in
1284 hp-ux which sometimes loses data. Apparently the
1285 code which blocks the master process when the internal
1286 buffer fills up does not work. Other than this,
1287 though, everything else seems to work fine.
1289 Since the latter lossage is more benign, we may as well
1290 lose that way. -- cph */
1292 #if defined (UNIX98_PTYS)
1295 ioctl (fd
, FIONBIO
, &on
);
1300 #endif /* HAVE_PTYS */
1303 #include <sys/socket.h>
1305 #endif /* HAVE_SOCKETS */
1308 #ifndef HAVE_H_ERRNO
1311 #endif /* TRY_AGAIN */
1314 init_system_name (void)
1316 #ifndef HAVE_GETHOSTNAME
1319 Vsystem_name
= build_string (uts
.nodename
);
1320 #else /* HAVE_GETHOSTNAME */
1321 unsigned int hostname_size
= 256;
1322 char *hostname
= alloca (hostname_size
);
1324 /* Try to get the host name; if the buffer is too short, try
1325 again. Apparently, the only indication gethostname gives of
1326 whether the buffer was large enough is the presence or absence
1327 of a '\0' in the string. Eech. */
1330 gethostname (hostname
, hostname_size
- 1);
1331 hostname
[hostname_size
- 1] = '\0';
1333 /* Was the buffer large enough for the '\0'? */
1334 if (strlen (hostname
) < hostname_size
- 1)
1337 hostname_size
<<= 1;
1338 hostname
= alloca (hostname_size
);
1341 /* Turn the hostname into the official, fully-qualified hostname.
1342 Don't do this if we're going to dump; this can confuse system
1343 libraries on some machines and make the dumped emacs core dump. */
1346 #endif /* not CANNOT_DUMP */
1347 if (! strchr (hostname
, '.'))
1350 #ifdef HAVE_GETADDRINFO
1351 struct addrinfo
*res
;
1352 struct addrinfo hints
;
1355 memset (&hints
, 0, sizeof (hints
));
1356 hints
.ai_socktype
= SOCK_STREAM
;
1357 hints
.ai_flags
= AI_CANONNAME
;
1359 for (count
= 0;; count
++)
1361 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1362 || ret
!= EAI_AGAIN
)
1367 Fsleep_for (make_number (1), Qnil
);
1372 struct addrinfo
*it
= res
;
1375 char *fqdn
= it
->ai_canonname
;
1376 if (fqdn
&& strchr (fqdn
, '.')
1377 && strcmp (fqdn
, "localhost.localdomain") != 0)
1383 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1384 strcpy (hostname
, it
->ai_canonname
);
1388 #else /* !HAVE_GETADDRINFO */
1390 for (count
= 0;; count
++)
1396 hp
= gethostbyname (hostname
);
1398 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1405 Fsleep_for (make_number (1), Qnil
);
1410 char *fqdn
= (char *) hp
->h_name
;
1412 if (!strchr (fqdn
, '.'))
1414 /* We still don't have a fully qualified domain name.
1415 Try to find one in the list of alternate names */
1416 char **alias
= hp
->h_aliases
;
1418 && (!strchr (*alias
, '.')
1419 || !strcmp (*alias
, "localhost.localdomain")))
1426 #endif /* !HAVE_GETADDRINFO */
1428 #endif /* HAVE_SOCKETS */
1429 Vsystem_name
= build_string (hostname
);
1430 #endif /* HAVE_GETHOSTNAME */
1433 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1434 if (*p
== ' ' || *p
== '\t')
1439 sigset_t empty_mask
;
1441 /* Store into *ACTION a signal action suitable for Emacs, with handler
1444 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1446 sigemptyset (&action
->sa_mask
);
1447 action
->sa_handler
= handler
;
1448 action
->sa_flags
= 0;
1449 #if defined (SA_RESTART)
1450 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1451 'select') to reset their timeout on some platforms (e.g.,
1452 HP-UX 11), which is not what we want. Also, when Emacs is
1453 interactive, we don't want SA_RESTART because we need to poll
1454 for pending input so we need long-running syscalls to be interrupted
1455 after a signal that sets the interrupt_input_pending flag. */
1456 /* Non-interactive keyboard input goes through stdio, where we always
1457 want restartable system calls. */
1459 action
->sa_flags
= SA_RESTART
;
1463 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1464 static pthread_t main_thread
;
1467 /* If we are on the main thread, handle the signal SIG with HANDLER.
1468 Otherwise, redirect the signal to the main thread, blocking it from
1469 this thread. POSIX says any thread can receive a signal that is
1470 associated with a process, process group, or asynchronous event.
1471 On GNU/Linux that is not true, but for other systems (FreeBSD at
1474 handle_on_main_thread (int sig
, signal_handler_t handler
)
1476 /* Preserve errno, to avoid race conditions with signal handlers that
1477 might change errno. Races can occur even in single-threaded hosts. */
1478 int old_errno
= errno
;
1480 bool on_main_thread
= true;
1481 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1482 if (! pthread_equal (pthread_self (), main_thread
))
1485 sigemptyset (&blocked
);
1486 sigaddset (&blocked
, sig
);
1487 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1488 pthread_kill (main_thread
, sig
);
1489 on_main_thread
= false;
1498 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1499 static char *my_sys_siglist
[NSIG
];
1503 # define sys_siglist my_sys_siglist
1509 sigemptyset (&empty_mask
);
1511 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1512 main_thread
= pthread_self ();
1515 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1519 sys_siglist
[SIGABRT
] = "Aborted";
1522 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1525 sys_siglist
[SIGALRM
] = "Alarm clock";
1528 sys_siglist
[SIGBUS
] = "Bus error";
1531 sys_siglist
[SIGCLD
] = "Child status changed";
1534 sys_siglist
[SIGCHLD
] = "Child status changed";
1537 sys_siglist
[SIGCONT
] = "Continued";
1540 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1543 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1546 sys_siglist
[SIGEMT
] = "Emulation trap";
1549 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1552 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1555 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1558 sys_siglist
[SIGHUP
] = "Hangup";
1561 sys_siglist
[SIGILL
] = "Illegal instruction";
1564 sys_siglist
[SIGINT
] = "Interrupt";
1567 sys_siglist
[SIGIO
] = "I/O possible";
1570 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1573 sys_siglist
[SIGIOT
] = "IOT trap";
1576 sys_siglist
[SIGKILL
] = "Killed";
1579 sys_siglist
[SIGLOST
] = "Resource lost";
1582 sys_siglist
[SIGLWP
] = "SIGLWP";
1585 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1588 sys_siglist
[SIGWIND
] = "SIGPHONE";
1591 sys_siglist
[SIGPIPE
] = "Broken pipe";
1594 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1597 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1600 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1603 sys_siglist
[SIGPWR
] = "Power-fail restart";
1606 sys_siglist
[SIGQUIT
] = "Quit";
1609 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1612 sys_siglist
[SIGSAK
] = "Secure attention";
1615 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1618 sys_siglist
[SIGSOUND
] = "Sound completed";
1621 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1624 sys_siglist
[SIGSTP
] = "Stopped (user)";
1627 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1630 sys_siglist
[SIGTERM
] = "Terminated";
1633 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1636 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1639 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1642 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1645 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1648 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1651 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1654 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1657 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1660 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1663 sys_siglist
[SIGWINCH
] = "Window size changed";
1666 sys_siglist
[SIGWIND
] = "SIGWIND";
1669 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1672 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1675 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1684 /* Figure out how many bits the system's random number generator uses.
1685 `random' and `lrand48' are assumed to return 31 usable bits.
1686 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1687 so we'll shift it and treat it like the 15-bit USG `rand'. */
1691 # define RAND_BITS 31
1692 # else /* !HAVE_RANDOM */
1693 # ifdef HAVE_LRAND48
1694 # define RAND_BITS 31
1695 # define random lrand48
1696 # else /* !HAVE_LRAND48 */
1697 # define RAND_BITS 15
1698 # if RAND_MAX == 32767
1699 # define random rand
1700 # else /* RAND_MAX != 32767 */
1701 # if RAND_MAX == 2147483647
1702 # define random() (rand () >> 16)
1703 # else /* RAND_MAX != 2147483647 */
1705 # define random rand
1707 # define random() (rand () >> 16)
1709 # endif /* RAND_MAX != 2147483647 */
1710 # endif /* RAND_MAX != 32767 */
1711 # endif /* !HAVE_LRAND48 */
1712 # endif /* !HAVE_RANDOM */
1713 #endif /* !RAND_BITS */
1716 seed_random (void *seed
, ptrdiff_t seed_size
)
1718 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
1719 unsigned int arg
= 0;
1723 unsigned char *argp
= (unsigned char *) &arg
;
1724 unsigned char *seedp
= seed
;
1726 for (i
= 0; i
< seed_size
; i
++)
1727 argp
[i
% sizeof arg
] ^= seedp
[i
];
1731 # ifdef HAVE_LRAND48
1742 EMACS_TIME t
= current_emacs_time ();
1743 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
1744 seed_random (&v
, sizeof v
);
1748 * Return a nonnegative random integer out of whatever we've got.
1749 * It contains enough bits to make a random (signed) Emacs fixnum.
1750 * This suffices even for a 64-bit architecture with a 15-bit rand.
1757 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1758 val
= (random () ^ (val
<< RAND_BITS
)
1759 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1760 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1761 return val
& INTMASK
;
1764 #ifndef HAVE_SNPRINTF
1765 /* Approximate snprintf as best we can on ancient hosts that lack it. */
1767 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
1769 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
1770 ptrdiff_t nbytes
= size
- 1;
1775 va_start (ap
, format
);
1776 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
1780 if (nbytes
== size
- 1)
1782 /* Calculate the length of the string that would have been created
1783 had the buffer been large enough. */
1784 char stackbuf
[4000];
1786 ptrdiff_t bsize
= sizeof stackbuf
;
1787 va_start (ap
, format
);
1788 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
1794 if (INT_MAX
< nbytes
)
1807 /* If a backtrace is available, output the top lines of it to stderr.
1808 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
1809 This function may be called from a signal handler, so it should
1810 not invoke async-unsafe functions like malloc. */
1812 emacs_backtrace (int backtrace_limit
)
1814 enum { BACKTRACE_LIMIT_MAX
= 500 };
1815 void *buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1816 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
1817 int npointers
= backtrace (buffer
, bounded_limit
+ 1);
1819 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
1820 backtrace_symbols_fd (buffer
, bounded_limit
, STDERR_FILENO
);
1821 if (bounded_limit
< npointers
)
1822 ignore_value (write (STDERR_FILENO
, "...\n", 4));
1826 /* Using emacs_abort lets GDB return from a breakpoint here. */
1830 fatal_error_backtrace (SIGABRT
, 10);
1835 emacs_open (const char *path
, int oflag
, int mode
)
1837 register int rtnval
;
1839 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1840 && (errno
== EINTR
))
1846 emacs_close (int fd
)
1849 register int rtnval
;
1851 while ((rtnval
= close (fd
)) == -1
1852 && (errno
== EINTR
))
1855 /* If close is interrupted SunOS 4.1 may or may not have closed the
1856 file descriptor. If it did the second close will fail with
1857 errno = EBADF. That means we have succeeded. */
1858 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1864 /* Maximum number of bytes to read or write in a single system call.
1865 This works around a serious bug in Linux kernels before 2.6.16; see
1866 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1867 It's likely to work around similar bugs in other operating systems, so do it
1868 on all platforms. Round INT_MAX down to a page size, with the conservative
1869 assumption that page sizes are at most 2**18 bytes (any kernel with a
1870 page size larger than that shouldn't have the bug). */
1871 #ifndef MAX_RW_COUNT
1872 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1875 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1876 Return the number of bytes read, which might be less than NBYTE.
1877 On error, set errno and return -1. */
1879 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
1881 register ssize_t rtnval
;
1883 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1884 passes a size that large to emacs_read. */
1886 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1887 && (errno
== EINTR
))
1892 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1893 or if a partial write occurs. Return the number of bytes written, setting
1894 errno if this is less than NBYTE. */
1896 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
1899 ptrdiff_t bytes_written
;
1905 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1911 /* I originally used `QUIT' but that might causes files to
1912 be truncated if you hit C-g in the middle of it. --Stef */
1913 process_pending_signals ();
1922 bytes_written
+= rtnval
;
1925 return (bytes_written
);
1928 static struct allocator
const emacs_norealloc_allocator
=
1929 { xmalloc
, NULL
, xfree
, memory_full
};
1931 /* Get the symbolic link value of FILENAME. Return a pointer to a
1932 NUL-terminated string. If readlink fails, return NULL and set
1933 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1934 Otherwise, allocate memory and return a pointer to that memory. If
1935 memory allocation fails, diagnose and fail without returning. If
1936 successful, store the length of the symbolic link into *LINKLEN. */
1938 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1940 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1941 &emacs_norealloc_allocator
, careadlinkatcwd
);
1946 * All of the following are for USG.
1948 * On USG systems the system calls are INTERRUPTIBLE by signals
1949 * that the user program has elected to catch. Thus the system call
1950 * must be retried in these cases. To handle this without massive
1951 * changes in the source code, we remap the standard system call names
1952 * to names for our own functions in sysdep.c that do the system call
1953 * with retries. Actually, for portability reasons, it is good
1954 * programming practice, as this example shows, to limit all actual
1955 * system calls to a single occurrence in the source. Sure, this
1956 * adds an extra level of function call overhead but it is almost
1957 * always negligible. Fred Fish, Unisoft Systems Inc.
1961 * Warning, this function may not duplicate 4.2 action properly
1962 * under error conditions.
1965 #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD)
1968 /* In 4.1, param.h fails to define this. */
1969 #define MAXPATHLEN 1024
1973 getwd (char *pathname
)
1975 char *npath
, *spath
;
1976 extern char *getcwd (char *, size_t);
1978 BLOCK_INPUT
; /* getcwd uses malloc */
1979 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1985 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1986 up to first slash. Should be harmless on other systems. */
1987 while (*npath
&& *npath
!= '/')
1989 strcpy (pathname
, npath
);
1990 free (spath
); /* getcwd uses malloc */
1995 #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */
1998 /* Directory routines for systems that don't have them. */
2000 #ifdef HAVE_DIRENT_H
2004 #if !defined (HAVE_CLOSEDIR)
2007 closedir (DIR *dirp
/* stream from opendir */)
2011 rtnval
= emacs_close (dirp
->dd_fd
);
2016 #endif /* not HAVE_CLOSEDIR */
2017 #endif /* HAVE_DIRENT_H */
2020 /* Return a struct timeval that is roughly equivalent to T.
2021 Use the least timeval not less than T.
2022 Return an extremal value if the result would overflow. */
2024 make_timeval (EMACS_TIME t
)
2027 tv
.tv_sec
= t
.tv_sec
;
2028 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2030 if (t
.tv_nsec
% 1000 != 0)
2032 if (tv
.tv_usec
< 999999)
2034 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2044 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2045 ATIME and MTIME, respectively.
2046 FD must be either negative -- in which case it is ignored --
2047 or a file descriptor that is open on FILE.
2048 If FD is nonnegative, then FILE can be NULL. */
2050 set_file_times (int fd
, const char *filename
,
2051 EMACS_TIME atime
, EMACS_TIME mtime
)
2053 struct timespec timespec
[2];
2054 timespec
[0] = atime
;
2055 timespec
[1] = mtime
;
2056 return fdutimens (fd
, filename
, timespec
);
2059 #ifndef HAVE_STRSIGNAL
2061 strsignal (int code
)
2065 if (0 <= code
&& code
< NSIG
)
2067 /* Cast to suppress warning if the table has const char *. */
2068 signame
= (char *) sys_siglist
[code
];
2073 #endif /* HAVE_STRSIGNAL */
2076 /* For make-serial-process */
2078 serial_open (char *port
)
2082 fd
= emacs_open ((char*) port
,
2095 error ("Could not open %s: %s",
2096 port
, emacs_strerror (errno
));
2099 ioctl (fd
, TIOCEXCL
, (char *) 0);
2105 #if !defined (HAVE_CFMAKERAW)
2106 /* Workaround for targets which are missing cfmakeraw. */
2107 /* Pasted from man page. */
2109 cfmakeraw (struct termios
*termios_p
)
2111 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2112 termios_p
->c_oflag
&= ~OPOST
;
2113 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2114 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2115 termios_p
->c_cflag
|= CS8
;
2117 #endif /* !defined (HAVE_CFMAKERAW */
2119 #if !defined (HAVE_CFSETSPEED)
2120 /* Workaround for targets which are missing cfsetspeed. */
2122 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2124 return (cfsetispeed (termios_p
, vitesse
)
2125 + cfsetospeed (termios_p
, vitesse
));
2129 /* For serial-process-configure */
2131 serial_configure (struct Lisp_Process
*p
,
2132 Lisp_Object contact
)
2134 Lisp_Object childp2
= Qnil
;
2135 Lisp_Object tem
= Qnil
;
2136 struct termios attr
;
2138 char summary
[4] = "???"; /* This usually becomes "8N1". */
2140 childp2
= Fcopy_sequence (p
->childp
);
2142 /* Read port attributes and prepare default configuration. */
2143 err
= tcgetattr (p
->outfd
, &attr
);
2145 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2147 #if defined (CLOCAL)
2148 attr
.c_cflag
|= CLOCAL
;
2151 attr
.c_cflag
|= CREAD
;
2154 /* Configure speed. */
2155 if (!NILP (Fplist_member (contact
, QCspeed
)))
2156 tem
= Fplist_get (contact
, QCspeed
);
2158 tem
= Fplist_get (p
->childp
, QCspeed
);
2160 err
= cfsetspeed (&attr
, XINT (tem
));
2162 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2163 emacs_strerror (errno
));
2164 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2166 /* Configure bytesize. */
2167 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2168 tem
= Fplist_get (contact
, QCbytesize
);
2170 tem
= Fplist_get (p
->childp
, QCbytesize
);
2172 tem
= make_number (8);
2174 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2175 error (":bytesize must be nil (8), 7, or 8");
2176 summary
[0] = XINT (tem
) + '0';
2177 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2178 attr
.c_cflag
&= ~CSIZE
;
2179 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2181 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2182 if (XINT (tem
) != 8)
2183 error ("Bytesize cannot be changed");
2185 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2187 /* Configure parity. */
2188 if (!NILP (Fplist_member (contact
, QCparity
)))
2189 tem
= Fplist_get (contact
, QCparity
);
2191 tem
= Fplist_get (p
->childp
, QCparity
);
2192 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2193 error (":parity must be nil (no parity), `even', or `odd'");
2194 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2195 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2196 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2201 else if (EQ (tem
, Qeven
))
2204 attr
.c_cflag
|= PARENB
;
2205 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2207 else if (EQ (tem
, Qodd
))
2210 attr
.c_cflag
|= (PARENB
| PARODD
);
2211 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2214 /* Don't error on no parity, which should be set by cfmakeraw. */
2216 error ("Parity cannot be configured");
2218 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2220 /* Configure stopbits. */
2221 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2222 tem
= Fplist_get (contact
, QCstopbits
);
2224 tem
= Fplist_get (p
->childp
, QCstopbits
);
2226 tem
= make_number (1);
2228 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2229 error (":stopbits must be nil (1 stopbit), 1, or 2");
2230 summary
[2] = XINT (tem
) + '0';
2231 #if defined (CSTOPB)
2232 attr
.c_cflag
&= ~CSTOPB
;
2233 if (XINT (tem
) == 2)
2234 attr
.c_cflag
|= CSTOPB
;
2236 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2237 if (XINT (tem
) != 1)
2238 error ("Stopbits cannot be configured");
2240 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2242 /* Configure flowcontrol. */
2243 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2244 tem
= Fplist_get (contact
, QCflowcontrol
);
2246 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2247 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2248 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2249 #if defined (CRTSCTS)
2250 attr
.c_cflag
&= ~CRTSCTS
;
2252 #if defined (CNEW_RTSCTS)
2253 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2255 #if defined (IXON) && defined (IXOFF)
2256 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2260 /* Already configured. */
2262 else if (EQ (tem
, Qhw
))
2264 #if defined (CRTSCTS)
2265 attr
.c_cflag
|= CRTSCTS
;
2266 #elif defined (CNEW_RTSCTS)
2267 attr
.c_cflag
|= CNEW_RTSCTS
;
2269 error ("Hardware flowcontrol (RTS/CTS) not supported");
2272 else if (EQ (tem
, Qsw
))
2274 #if defined (IXON) && defined (IXOFF)
2275 attr
.c_iflag
|= (IXON
| IXOFF
);
2277 error ("Software flowcontrol (XON/XOFF) not supported");
2280 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2282 /* Activate configuration. */
2283 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2285 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2287 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2288 pset_childp (p
, childp2
);
2290 #endif /* not DOS_NT */
2292 /* System depended enumeration of and access to system processes a-la ps(1). */
2296 /* Process enumeration and access via /proc. */
2299 list_system_processes (void)
2301 Lisp_Object procdir
, match
, proclist
, next
;
2302 struct gcpro gcpro1
, gcpro2
;
2303 register Lisp_Object tail
;
2305 GCPRO2 (procdir
, match
);
2306 /* For every process on the system, there's a directory in the
2307 "/proc" pseudo-directory whose name is the numeric ID of that
2309 procdir
= build_string ("/proc");
2310 match
= build_string ("[0-9]+");
2311 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2313 /* `proclist' gives process IDs as strings. Destructively convert
2314 each string into a number. */
2315 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2318 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2322 /* directory_files_internal returns the files in reverse order; undo
2324 proclist
= Fnreverse (proclist
);
2328 #elif defined BSD_SYSTEM
2331 list_system_processes (void)
2333 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2334 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2336 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2339 struct kinfo_proc
*procs
;
2342 struct gcpro gcpro1
;
2343 Lisp_Object proclist
= Qnil
;
2345 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2348 procs
= xmalloc (len
);
2349 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2356 len
/= sizeof (struct kinfo_proc
);
2357 for (i
= 0; i
< len
; i
++)
2359 #if defined DARWIN_OS || defined __NetBSD__
2360 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2361 #elif defined __OpenBSD__
2362 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2364 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2374 /* The WINDOWSNT implementation is in w32.c.
2375 The MSDOS implementation is in dosfns.c. */
2376 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2379 list_system_processes (void)
2384 #endif /* !defined (WINDOWSNT) */
2388 time_from_jiffies (unsigned long long tval
, long hz
)
2390 unsigned long long s
= tval
/ hz
;
2391 unsigned long long frac
= tval
% hz
;
2394 if (TYPE_MAXIMUM (time_t) < s
)
2396 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2397 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2398 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2401 /* This is reachable only in the unlikely case that HZ * HZ
2402 exceeds ULLONG_MAX. It calculates an approximation that is
2403 guaranteed to be in range. */
2404 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2405 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2406 ns
= frac
/ hz_per_ns
;
2409 return make_emacs_time (s
, ns
);
2413 ltime_from_jiffies (unsigned long long tval
, long hz
)
2415 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2416 return make_lisp_time (t
);
2423 EMACS_TIME up
= make_emacs_time (0, 0);
2426 fup
= fopen ("/proc/uptime", "r");
2430 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2431 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2433 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2434 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2435 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2438 if (TYPE_MAXIMUM (time_t) < upsec
)
2440 upsec
= TYPE_MAXIMUM (time_t);
2441 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2445 int upfraclen
= upfrac_end
- upfrac_start
;
2446 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2448 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2450 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2452 up
= make_emacs_time (upsec
, upfrac
);
2461 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2462 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2465 procfs_ttyname (int rdev
)
2468 char name
[PATH_MAX
];
2471 fdev
= fopen ("/proc/tty/drivers", "r");
2476 unsigned long minor_beg
, minor_end
;
2477 char minor
[25]; /* 2 32-bit numbers + dash */
2480 while (!feof (fdev
) && !ferror (fdev
))
2482 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2483 && major
== MAJOR (rdev
))
2485 minor_beg
= strtoul (minor
, &endp
, 0);
2487 minor_end
= minor_beg
;
2488 else if (*endp
== '-')
2489 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2493 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2495 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2503 return build_string (name
);
2506 static unsigned long
2507 procfs_get_total_memory (void)
2510 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2513 fmem
= fopen ("/proc/meminfo", "r");
2517 unsigned long entry_value
;
2518 char entry_name
[20]; /* the longest I saw is 13+1 */
2520 while (!feof (fmem
) && !ferror (fmem
))
2522 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2523 && strcmp (entry_name
, "MemTotal:") == 0)
2525 retval
= entry_value
;
2536 system_process_attributes (Lisp_Object pid
)
2538 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2542 long clocks_per_sec
;
2544 char procbuf
[1025], *p
, *q
;
2547 static char const default_cmd
[] = "???";
2548 const char *cmd
= default_cmd
;
2549 int cmdsize
= sizeof default_cmd
- 1;
2550 char *cmdline
= NULL
;
2551 ptrdiff_t cmdline_size
;
2554 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2557 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2558 long priority
, niceness
, rss
;
2559 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2560 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2562 Lisp_Object attrs
= Qnil
;
2563 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2564 struct gcpro gcpro1
, gcpro2
;
2566 CHECK_NUMBER_OR_FLOAT (pid
);
2567 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2568 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2569 if (stat (procfn
, &st
) < 0)
2572 GCPRO2 (attrs
, decoded_cmd
);
2576 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2578 pw
= getpwuid (uid
);
2581 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2584 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2586 gr
= getgrgid (gid
);
2589 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2591 strcpy (fn
, procfn
);
2592 procfn_end
= fn
+ strlen (fn
);
2593 strcpy (procfn_end
, "/stat");
2594 fd
= emacs_open (fn
, O_RDONLY
, 0);
2595 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2597 procbuf
[nread
] = '\0';
2600 p
= strchr (p
, '(');
2603 q
= strrchr (p
+ 1, ')');
2613 /* Command name is encoded in locale-coding-system; decode it. */
2614 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2615 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2616 Vlocale_coding_system
, 0);
2617 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2621 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2623 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2624 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2625 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2626 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2627 &u_time
, &s_time
, &cutime
, &cstime
,
2628 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2633 state_str
[1] = '\0';
2634 tem
= build_string (state_str
);
2635 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2637 /* Stops GCC whining about limited range of data type. */
2642 thcount_eint
= thcount
;
2643 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2644 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2645 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2646 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2647 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2648 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2649 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2650 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2651 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2652 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2653 if (clocks_per_sec
< 0)
2654 clocks_per_sec
= 100;
2655 attrs
= Fcons (Fcons (Qutime
,
2656 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2658 attrs
= Fcons (Fcons (Qstime
,
2659 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2661 attrs
= Fcons (Fcons (Qtime
,
2662 ltime_from_jiffies (s_time
+ u_time
,
2665 attrs
= Fcons (Fcons (Qcutime
,
2666 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2668 attrs
= Fcons (Fcons (Qcstime
,
2669 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2671 attrs
= Fcons (Fcons (Qctime
,
2672 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2674 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2675 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2676 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2677 tnow
= current_emacs_time ();
2678 telapsed
= get_up_time ();
2679 tboot
= sub_emacs_time (tnow
, telapsed
);
2680 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2681 tstart
= add_emacs_time (tboot
, tstart
);
2682 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2683 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2684 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2685 telapsed
= sub_emacs_time (tnow
, tstart
);
2686 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2687 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2688 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2689 / EMACS_TIME_TO_DOUBLE (telapsed
));
2692 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2693 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2696 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2703 strcpy (procfn_end
, "/cmdline");
2704 fd
= emacs_open (fn
, O_RDONLY
, 0);
2708 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2710 if (emacs_read (fd
, &ch
, 1) != 1)
2713 if (c_isspace (c
) || c
== '\\')
2714 cmdline_size
++; /* for later quoting, see below */
2718 cmdline
= xmalloc (cmdline_size
+ 1);
2719 lseek (fd
, 0L, SEEK_SET
);
2721 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2722 cmdline
[nread
++] = '\0';
2725 /* Assigning zero to `nread' makes us skip the following
2726 two loops, assign zero to cmdline_size, and enter the
2727 following `if' clause that handles unknown command
2731 /* We don't want trailing null characters. */
2732 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2734 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2736 /* Escape-quote whitespace and backslashes. */
2737 if (c_isspace (*p
) || *p
== '\\')
2739 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2743 else if (*p
== '\0')
2746 cmdline_size
= nread
;
2750 cmdline_size
= cmdsize
+ 2;
2751 cmdline
= xmalloc (cmdline_size
+ 1);
2752 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2755 /* Command line is encoded in locale-coding-system; decode it. */
2756 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2757 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2758 Vlocale_coding_system
, 0);
2760 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2767 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2769 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2770 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2771 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2772 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2773 #undef _FILE_OFFSET_BITS
2775 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2780 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2781 #define _FILE_OFFSET_BITS 64
2782 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2784 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2787 system_process_attributes (Lisp_Object pid
)
2789 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2794 struct psinfo pinfo
;
2800 Lisp_Object attrs
= Qnil
;
2801 Lisp_Object decoded_cmd
, tem
;
2802 struct gcpro gcpro1
, gcpro2
;
2804 CHECK_NUMBER_OR_FLOAT (pid
);
2805 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2806 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2807 if (stat (procfn
, &st
) < 0)
2810 GCPRO2 (attrs
, decoded_cmd
);
2814 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2816 pw
= getpwuid (uid
);
2819 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2822 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2824 gr
= getgrgid (gid
);
2827 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2829 strcpy (fn
, procfn
);
2830 procfn_end
= fn
+ strlen (fn
);
2831 strcpy (procfn_end
, "/psinfo");
2832 fd
= emacs_open (fn
, O_RDONLY
, 0);
2834 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2836 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2837 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2838 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2842 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2843 state_str
[1] = '\0';
2844 tem
= build_string (state_str
);
2845 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2848 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2849 need to get a string from it. */
2851 /* FIXME: missing: Qtpgid */
2863 Are they available? */
2865 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
2866 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
2867 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
2868 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
2869 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
2871 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
2872 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
2873 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
2875 /* pr_pctcpu and pr_pctmem are unsigned integers in the
2876 range 0 .. 2**15, representing 0.0 .. 1.0. */
2877 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
2878 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
2881 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
2882 strlen (pinfo
.pr_fname
)),
2883 Vlocale_coding_system
, 0);
2884 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2886 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
2887 strlen (pinfo
.pr_psargs
)),
2888 Vlocale_coding_system
, 0);
2889 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2899 #elif defined __FreeBSD__
2902 timeval_to_EMACS_TIME (struct timeval t
)
2904 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
2908 make_lisp_timeval (struct timeval t
)
2910 return make_lisp_time (timeval_to_EMACS_TIME (t
));
2914 system_process_attributes (Lisp_Object pid
)
2917 int pagesize
= getpagesize ();
2924 char args
[MAXPATHLEN
];
2927 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
2928 struct kinfo_proc proc
;
2929 size_t proclen
= sizeof proc
;
2931 struct gcpro gcpro1
, gcpro2
;
2932 Lisp_Object attrs
= Qnil
;
2933 Lisp_Object decoded_comm
;
2935 CHECK_NUMBER_OR_FLOAT (pid
);
2936 CONS_TO_INTEGER (pid
, int, proc_id
);
2939 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
2942 GCPRO2 (attrs
, decoded_comm
);
2944 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
2947 pw
= getpwuid (proc
.ki_uid
);
2950 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2952 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
2955 gr
= getgrgid (proc
.ki_svgid
);
2958 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2960 decoded_comm
= code_convert_string_norecord
2961 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
2962 Vlocale_coding_system
, 0);
2964 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
2966 char state
[2] = {'\0', '\0'};
2967 switch (proc
.ki_stat
)
2989 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
2992 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
2993 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
2994 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
2997 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3000 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3002 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3003 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3004 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3005 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3006 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3008 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3010 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3012 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3013 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3014 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3016 attrs
= Fcons (Fcons (Qcutime
,
3017 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3019 attrs
= Fcons (Fcons (Qcstime
,
3020 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3022 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3023 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3024 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3026 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3028 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3029 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3030 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3031 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3032 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3035 now
= current_emacs_time ();
3036 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3037 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3039 len
= sizeof fscale
;
3040 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3045 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3047 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3048 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3049 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3053 len
= sizeof npages
;
3054 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3056 double pmem
= (proc
.ki_flag
& P_INMEM
3057 ? 100.0 * proc
.ki_rssize
/ npages
3059 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3062 mib
[2] = KERN_PROC_ARGS
;
3064 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3067 for (i
= 0; i
< len
; i
++)
3069 if (! args
[i
] && i
< len
- 1)
3074 (code_convert_string_norecord
3075 (build_unibyte_string (args
),
3076 Vlocale_coding_system
, 0));
3078 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3085 /* The WINDOWSNT implementation is in w32.c.
3086 The MSDOS implementation is in dosfns.c. */
3087 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3090 system_process_attributes (Lisp_Object pid
)
3095 #endif /* !defined (WINDOWSNT) */