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/>. */
28 #endif /* HAVE_PWD_H */
32 #include <allocator.h>
33 #include <careadlinkat.h>
34 #include <ignore-value.h>
38 #include "sysselect.h"
39 #include "blockinput.h"
42 #include <sys/sysctl.h>
44 #include <sys/resource.h>
49 #include <sys/sysctl.h>
54 #define write sys_write
56 #endif /* not WINDOWSNT */
58 #include <sys/types.h>
62 /* Get SI_SRPC_DOMAIN, if it is available. */
63 #ifdef HAVE_SYS_SYSTEMINFO_H
64 #include <sys/systeminfo.h>
67 #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);
109 #if defined TIOCNOTTY || defined USG5 || defined CYGWIN
110 static _Noreturn
void croak (char *);
113 /* Declare here, including term.h is problematic on some systems. */
114 extern void tputs (const char *, int, int (*)(int));
116 static const int baud_convert
[] =
118 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
119 1800, 2400, 4800, 9600, 19200, 38400
123 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
125 /* Return the current working directory. Returns NULL on errors.
126 Any other returned value must be freed with free. This is used
127 only when get_current_dir_name is not defined on the system. */
129 get_current_dir_name (void)
133 struct stat dotstat
, pwdstat
;
134 /* If PWD is accurate, use it instead of calling getwd. PWD is
135 sometimes a nicer name, and using it may avoid a fatal error if a
136 parent directory is searchable but not readable. */
137 if ((pwd
= getenv ("PWD")) != 0
138 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
139 && stat (pwd
, &pwdstat
) == 0
140 && stat (".", &dotstat
) == 0
141 && dotstat
.st_ino
== pwdstat
.st_ino
142 && dotstat
.st_dev
== pwdstat
.st_dev
144 && strlen (pwd
) < MAXPATHLEN
148 buf
= (char *) malloc (strlen (pwd
) + 1);
156 size_t buf_size
= 1024;
157 buf
= (char *) malloc (buf_size
);
162 if (getcwd (buf
, buf_size
) == buf
)
166 int tmp_errno
= errno
;
172 buf
= (char *) realloc (buf
, buf_size
);
180 /* We need MAXPATHLEN here. */
181 buf
= (char *) malloc (MAXPATHLEN
+ 1);
184 if (getwd (buf
) == NULL
)
186 int tmp_errno
= errno
;
198 /* Discard pending input on all input descriptors. */
201 discard_tty_input (void)
204 struct emacs_tty buf
;
209 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
210 while (dos_keyread () != -1)
212 #else /* not MSDOS */
214 struct tty_display_info
*tty
;
215 for (tty
= tty_list
; tty
; tty
= tty
->next
)
217 if (tty
->input
) /* Is the device suspended? */
219 emacs_get_tty (fileno (tty
->input
), &buf
);
220 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
224 #endif /* not MSDOS */
225 #endif /* not WINDOWSNT */
231 /* Arrange for character C to be read as the next input from
233 XXX What if we have multiple ttys?
239 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
242 /* Should perhaps error if in batch mode */
244 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
245 #else /* no TIOCSTI */
246 error ("Cannot stuff terminal input characters in this version of Unix");
247 #endif /* no TIOCSTI */
253 init_baud_rate (int fd
)
263 #else /* not DOS_NT */
268 emacs_ospeed
= cfgetospeed (&sg
);
269 #endif /* not DOS_NT */
272 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
273 ? baud_convert
[emacs_ospeed
] : 9600);
280 /* Set nonzero to make following function work under dbx
281 (at least for bsd). */
282 int wait_debugging EXTERNALLY_VISIBLE
;
287 wait_for_termination_1 (pid_t pid
, int interruptible
)
291 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined (__GNU__)
292 /* Note that kill returns -1 even if the process is just a zombie now.
293 But inevitably a SIGCHLD interrupt should be generated
294 and child_sig will do wait3 and make the process go away. */
295 /* There is some indication that there is a bug involved with
296 termination of subprocesses, perhaps involving a kernel bug too,
297 but no idea what it is. Just as a hunch we signal SIGCHLD to see
298 if that causes the problem to go away or get worse. */
299 sigsetmask (sigmask (SIGCHLD
));
300 if (0 > kill (pid
, 0))
302 sigsetmask (SIGEMPTYMASK
);
303 kill (getpid (), SIGCHLD
);
309 sigpause (SIGEMPTYMASK
);
310 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
314 #else /* not WINDOWSNT */
315 sigblock (sigmask (SIGCHLD
));
317 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
319 sigunblock (sigmask (SIGCHLD
));
323 sigsuspend (&empty_mask
);
324 #endif /* not WINDOWSNT */
325 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
331 /* Wait for subprocess with process id `pid' to terminate and
332 make sure it will get eliminated (not remain forever as a zombie) */
335 wait_for_termination (pid_t pid
)
337 wait_for_termination_1 (pid
, 0);
340 /* Like the above, but allow keyboard interruption. */
342 interruptible_wait_for_termination (pid_t pid
)
344 wait_for_termination_1 (pid
, 1);
348 * flush any pending output
349 * (may flush input as well; it does not matter the way we use it)
353 flush_pending_output (int channel
)
355 /* FIXME: maybe this function should be removed */
358 /* Set up the terminal at the other end of a pseudo-terminal that
359 we will be controlling an inferior through.
360 It should not echo or do line-editing, since that is done
361 in Emacs. No padding needed for insertion into an Emacs buffer. */
364 child_setup_tty (int out
)
369 emacs_get_tty (out
, &s
);
370 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
371 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
373 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
374 Some versions of GNU Hurd do not have FFDLY? */
376 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
377 /* No output delays */
379 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
380 /* No output delays */
383 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
384 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
386 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
389 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
392 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
394 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
395 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
396 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
397 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
400 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
403 #ifdef SIGNALS_VIA_CHARACTERS
404 /* the QUIT and INTR character are used in process_send_signal
405 so set them here to something useful. */
406 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
407 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
408 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
409 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
410 #endif /* not SIGNALS_VIA_CHARACTERS */
413 /* Also, PTY overloads NUL and BREAK.
414 don't ignore break, but don't signal either, so it looks like NUL. */
415 s
.main
.c_iflag
&= ~IGNBRK
;
416 s
.main
.c_iflag
&= ~BRKINT
;
417 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
418 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
419 would force it to 0377. That looks like duplicated code. */
420 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
423 /* We originally enabled ICANON (and set VEOF to 04), and then had
424 process.c send additional EOF chars to flush the output when faced
425 with long lines, but this leads to weird effects when the
426 subprocess has disabled ICANON and ends up seeing those spurious
427 extra EOFs. So we don't send EOFs any more in
428 process.c:send_process. First we tried to disable ICANON by
429 default, so if a subsprocess sets up ICANON, it's his problem (or
430 the Elisp package that talks to it) to deal with lines that are
431 too long. But this disables some features, such as the ability
432 to send EOF signals. So we re-enabled ICANON but there is no
433 more "send eof to flush" going on (which is wrong and unportable
434 in itself). The correct way to handle too much output is to
435 buffer what could not be written and then write it again when
436 select returns ok for writing. This has it own set of
437 problems. Write is now asynchronous, is that a problem? How much
438 do we buffer, and what do we do when that limit is reached? */
440 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
441 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
442 #if 0 /* These settings only apply to non-ICANON mode. */
443 s
.main
.c_cc
[VMIN
] = 1;
444 s
.main
.c_cc
[VTIME
] = 0;
447 emacs_set_tty (out
, &s
, 0);
448 #endif /* not WINDOWSNT */
450 #endif /* not MSDOS */
453 /* Record a signal code and the handler for it. */
457 void (*handler
) (int);
460 static void save_signal_handlers (struct save_signal
*);
461 static void restore_signal_handlers (struct save_signal
*);
463 /* Suspend the Emacs process; give terminal to its superior. */
468 #if defined (SIGTSTP) && !defined (MSDOS)
471 int pgrp
= EMACS_GETPGRP (0);
472 EMACS_KILLPG (pgrp
, SIGTSTP
);
475 #else /* No SIGTSTP */
476 /* On a system where suspending is not implemented,
477 instead fork a subshell and let it talk directly to the terminal
481 #endif /* no SIGTSTP */
484 /* Fork a subshell. */
489 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
491 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
494 struct save_signal saved_handlers
[5];
496 unsigned char *volatile str_volatile
= 0;
500 saved_handlers
[0].code
= SIGINT
;
501 saved_handlers
[1].code
= SIGQUIT
;
502 saved_handlers
[2].code
= SIGTERM
;
504 saved_handlers
[3].code
= SIGIO
;
505 saved_handlers
[4].code
= 0;
507 saved_handlers
[3].code
= 0;
510 /* Mentioning current_buffer->buffer would mean including buffer.h,
511 which somehow wedges the hp compiler. So instead... */
513 dir
= intern ("default-directory");
514 if (NILP (Fboundp (dir
)))
516 dir
= Fsymbol_value (dir
);
520 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
521 str_volatile
= str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
523 memcpy (str
, SDATA (dir
), len
);
524 if (str
[len
- 1] != '/') str
[len
++] = '/';
530 save_signal_handlers (saved_handlers
);
531 synch_process_alive
= 1;
535 error ("Can't spawn subshell");
542 #ifdef DOS_NT /* MW, Aug 1993 */
545 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
548 sh
= (char *) egetenv ("SHELL");
552 /* Use our buffer's default directory for the subshell. */
554 if (str
&& chdir ((char *) str
) != 0)
557 ignore_value (write (1, "Can't chdir\n", 12));
562 close_process_descs (); /* Close Emacs's pipes/ptys */
564 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
566 char *epwd
= getenv ("PWD");
567 char old_pwd
[MAXPATHLEN
+1+4];
569 /* If PWD is set, pass it with corrected value. */
572 strcpy (old_pwd
, epwd
);
573 if (str
[len
- 1] == '/')
575 setenv ("PWD", str
, 1);
578 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
580 putenv (old_pwd
); /* restore previous value */
582 #else /* not MSDOS */
584 /* Waits for process completion */
585 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
586 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
588 write (1, "Can't execute subshell", 22);
589 #else /* not WINDOWSNT */
590 execlp (sh
, sh
, (char *) 0);
591 ignore_value (write (1, "Can't execute subshell", 22));
593 #endif /* not WINDOWSNT */
594 #endif /* not MSDOS */
597 /* Do this now if we did not do it before. */
599 save_signal_handlers (saved_handlers
);
600 synch_process_alive
= 1;
604 wait_for_termination (pid
);
606 restore_signal_handlers (saved_handlers
);
607 synch_process_alive
= 0;
611 save_signal_handlers (struct save_signal
*saved_handlers
)
613 while (saved_handlers
->code
)
615 saved_handlers
->handler
616 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
622 restore_signal_handlers (struct save_signal
*saved_handlers
)
624 while (saved_handlers
->code
)
626 signal (saved_handlers
->code
, saved_handlers
->handler
);
632 /* If SIGIO is broken, don't do anything. */
649 unrequest_sigio (void)
656 static int old_fcntl_flags
[MAXDESC
];
662 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
663 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
665 interrupts_deferred
= 0;
672 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
676 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
677 /* XXX Uhm, FASYNC is not used anymore here. */
678 /* XXX Yeah, but you need it for SIGIO, don't you? */
687 sigunblock (sigmask (SIGWINCH
));
689 sigunblock (sigmask (SIGIO
));
691 interrupts_deferred
= 0;
695 unrequest_sigio (void)
700 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
706 sigblock (sigmask (SIGWINCH
));
708 sigblock (sigmask (SIGIO
));
709 interrupts_deferred
= 1;
712 #else /* no FASYNC */
718 if (noninteractive
|| read_socket_hook
)
721 croak ("request_sigio");
725 unrequest_sigio (void)
727 if (noninteractive
|| read_socket_hook
)
730 croak ("unrequest_sigio");
739 /* Getting and setting emacs_tty structures. */
741 /* Set *TC to the parameters associated with the terminal FD.
742 Return zero if all's well, or -1 if we ran into an error we
743 couldn't deal with. */
745 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
747 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
749 /* We have those nifty POSIX tcmumbleattr functions. */
750 memset (&settings
->main
, 0, sizeof (settings
->main
));
751 if (tcgetattr (fd
, &settings
->main
) < 0)
755 /* We have survived the tempest. */
760 /* Set the parameters of the tty on FD according to the contents of
761 *SETTINGS. If FLUSHP is non-zero, we discard input.
762 Return 0 if all went well, and -1 if anything failed. */
765 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
767 /* Set the primary parameters - baud rate, character size, etcetera. */
770 /* We have those nifty POSIX tcmumbleattr functions.
771 William J. Smith <wjs@wiis.wang.com> writes:
772 "POSIX 1003.1 defines tcsetattr to return success if it was
773 able to perform any of the requested actions, even if some
774 of the requested actions could not be performed.
775 We must read settings back to ensure tty setup properly.
776 AIX requires this to keep tty from hanging occasionally." */
777 /* This make sure that we don't loop indefinitely in here. */
778 for (i
= 0 ; i
< 10 ; i
++)
779 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
790 memset (&new, 0, sizeof (new));
791 /* Get the current settings, and see if they're what we asked for. */
792 tcgetattr (fd
, &new);
793 /* We cannot use memcmp on the whole structure here because under
794 * aix386 the termios structure has some reserved field that may
797 if ( new.c_iflag
== settings
->main
.c_iflag
798 && new.c_oflag
== settings
->main
.c_oflag
799 && new.c_cflag
== settings
->main
.c_cflag
800 && new.c_lflag
== settings
->main
.c_lflag
801 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
808 /* We have survived the tempest. */
815 static int old_fcntl_owner
[MAXDESC
];
816 #endif /* F_SETOWN */
818 /* This may also be defined in stdio,
819 but if so, this does no harm,
820 and using the same name avoids wasting the other one's space. */
823 unsigned char _sobuf
[BUFSIZ
+8];
828 /* Initialize the terminal mode on all tty devices that are currently
832 init_all_sys_modes (void)
834 struct tty_display_info
*tty
;
835 for (tty
= tty_list
; tty
; tty
= tty
->next
)
836 init_sys_modes (tty
);
839 /* Initialize the terminal mode on the given tty device. */
842 init_sys_modes (struct tty_display_info
*tty_out
)
844 struct emacs_tty tty
;
845 Lisp_Object terminal
;
847 Vtty_erase_char
= Qnil
;
852 if (!tty_out
->output
)
853 return; /* The tty is suspended. */
855 if (! tty_out
->old_tty
)
856 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
858 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
860 tty
= *tty_out
->old_tty
;
862 #if !defined (DOS_NT)
863 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
865 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
866 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
867 #ifdef INLCR /* I'm just being cautious,
868 since I can't check how widespread INLCR is--rms. */
869 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
872 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
874 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
875 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
877 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
879 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
880 if (tty_out
->flow_control
)
882 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
884 tty
.main
.c_iflag
&= ~IXANY
;
888 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
889 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
891 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
893 if (tty_out
->meta_key
)
895 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
896 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
900 XSETTERMINAL(terminal
, tty_out
->terminal
);
901 if (!NILP (Fcontrolling_tty_p (terminal
)))
903 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
904 /* Set up C-g for both SIGQUIT and SIGINT.
905 We don't know which we will get, but we handle both alike
906 so which one it really gives us does not matter. */
907 tty
.main
.c_cc
[VQUIT
] = quit_char
;
911 /* We normally don't get interrupt or quit signals from tty
912 devices other than our controlling terminal; therefore,
913 we must handle C-g as normal input. Unfortunately, this
914 means that the interrupt and quit feature must be
915 disabled on secondary ttys, or we would not even see the
918 Note that even though emacsclient could have special code
919 to pass SIGINT to Emacs, we should _not_ enable
920 interrupt/quit keys for emacsclient frames. This means
921 that we can't break out of loops in C code from a
922 secondary tty frame, but we can always decide what
923 display the C-g came from, which is more important from a
924 usability point of view. (Consider the case when two
925 people work together using the same Emacs instance.) */
926 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
927 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
929 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
930 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
932 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
937 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
940 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
942 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
943 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
946 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
949 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
950 #endif /* VREPRINT */
952 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
955 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
956 #endif /* VDISCARD */
958 if (tty_out
->flow_control
)
961 tty
.main
.c_cc
[VSTART
] = '\021';
964 tty
.main
.c_cc
[VSTOP
] = '\023';
970 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
973 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
978 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
979 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
980 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
981 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
982 if (tty_out
->flow_control
)
985 tty
.main
.c_cc
[VSTART
] = '\021';
988 tty
.main
.c_cc
[VSTOP
] = '\023';
991 /* Also, PTY overloads NUL and BREAK.
992 don't ignore break, but don't signal either, so it looks like NUL.
993 This really serves a purpose only if running in an XTERM window
994 or via TELNET or the like, but does no harm elsewhere. */
995 tty
.main
.c_iflag
&= ~IGNBRK
;
996 tty
.main
.c_iflag
&= ~BRKINT
;
998 #endif /* not DOS_NT */
1000 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1001 if (!tty_out
->term_initted
)
1002 internal_terminal_init ();
1003 dos_ttraw (tty_out
);
1006 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1008 /* This code added to insure that, if flow-control is not to be used,
1009 we have an unlocked terminal at the start. */
1012 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1015 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1018 #if !defined (DOS_NT)
1020 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1025 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1026 if (interrupt_input
)
1028 old_fcntl_owner
[fileno (tty_out
->input
)] =
1029 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1030 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1031 init_sigio (fileno (tty_out
->input
));
1033 if (gpm_tty
== tty_out
)
1035 /* Arrange for mouse events to give us SIGIO signals. */
1036 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1037 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1038 init_sigio (gpm_fd
);
1040 #endif /* HAVE_GPM */
1042 #endif /* F_GETOWN */
1043 #endif /* F_SETFL */
1046 /* This symbol is defined on recent USG systems.
1047 Someone says without this call USG won't really buffer the file
1048 even with a call to setbuf. */
1049 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1051 setbuf (tty_out
->output
, (char *) _sobuf
);
1054 if (tty_out
->terminal
->set_terminal_modes_hook
)
1055 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1057 if (!tty_out
->term_initted
)
1059 Lisp_Object tail
, frame
;
1060 FOR_EACH_FRAME (tail
, frame
)
1062 /* XXX This needs to be revised. */
1063 if (FRAME_TERMCAP_P (XFRAME (frame
))
1064 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1065 init_frame_faces (XFRAME (frame
));
1069 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1071 /* We used to call "direct_output_forward_char(0)" here,
1072 but it's not clear why, since it may not do anything anyway. */
1076 Lisp_Object tail
, frame
;
1078 FOR_EACH_FRAME (tail
, frame
)
1080 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1081 || FRAME_MSDOS_P (XFRAME (frame
)))
1082 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1083 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1087 tty_out
->term_initted
= 1;
1090 /* Return nonzero if safe to use tabs in output.
1091 At the time this is called, init_sys_modes has not been done yet. */
1094 tabs_safe_p (int fd
)
1096 struct emacs_tty etty
;
1098 emacs_get_tty (fd
, &etty
);
1101 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1102 #else /* not TABDLY */
1104 #endif /* not TABDLY */
1110 /* Get terminal size from system.
1111 Store number of lines into *HEIGHTP and width into *WIDTHP.
1112 We store 0 if there's no valid information. */
1115 get_tty_size (int fd
, int *widthp
, int *heightp
)
1117 #if defined TIOCGWINSZ
1120 struct winsize size
;
1122 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1123 *widthp
= *heightp
= 0;
1126 *widthp
= size
.ws_col
;
1127 *heightp
= size
.ws_row
;
1130 #elif defined TIOCGSIZE
1132 /* SunOS - style. */
1133 struct ttysize size
;
1135 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1136 *widthp
= *heightp
= 0;
1139 *widthp
= size
.ts_cols
;
1140 *heightp
= size
.ts_lines
;
1143 #elif defined WINDOWSNT
1145 CONSOLE_SCREEN_BUFFER_INFO info
;
1146 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1148 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1149 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1152 *widthp
= *heightp
= 0;
1156 *widthp
= ScreenCols ();
1157 *heightp
= ScreenRows ();
1159 #else /* system doesn't know size */
1167 /* Set the logical window size associated with descriptor FD
1168 to HEIGHT and WIDTH. This is used mainly with ptys. */
1171 set_window_size (int fd
, int height
, int width
)
1176 struct winsize size
;
1177 size
.ws_row
= height
;
1178 size
.ws_col
= width
;
1180 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1181 return 0; /* error */
1188 /* SunOS - style. */
1189 struct ttysize size
;
1190 size
.ts_lines
= height
;
1191 size
.ts_cols
= width
;
1193 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1199 #endif /* not SunOS-style */
1200 #endif /* not BSD-style */
1205 /* Prepare all terminal devices for exiting Emacs. */
1208 reset_all_sys_modes (void)
1210 struct tty_display_info
*tty
;
1211 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1212 reset_sys_modes (tty
);
1215 /* Prepare the terminal for closing it; move the cursor to the
1216 bottom of the frame, turn off interrupt-driven I/O, etc. */
1219 reset_sys_modes (struct tty_display_info
*tty_out
)
1226 if (!tty_out
->term_initted
)
1229 if (!tty_out
->output
)
1230 return; /* The tty is suspended. */
1232 /* Go to and clear the last line of the terminal. */
1234 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1236 /* Code adapted from tty_clear_end_of_line. */
1237 if (tty_out
->TS_clr_line
)
1239 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1242 { /* have to do it the hard way */
1244 tty_turn_off_insert (tty_out
);
1246 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1248 fputc (' ', tty_out
->output
);
1252 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1253 fflush (tty_out
->output
);
1255 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1256 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1259 /* Avoid possible loss of output when changing terminal modes. */
1260 fsync (fileno (tty_out
->output
));
1264 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1265 if (interrupt_input
)
1267 reset_sigio (fileno (tty_out
->input
));
1268 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1269 old_fcntl_owner
[fileno (tty_out
->input
)]);
1271 #endif /* F_SETOWN */
1273 fcntl (fileno (tty_out
->input
), F_SETFL
,
1274 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1276 #endif /* F_SETFL */
1278 if (tty_out
->old_tty
)
1279 while (emacs_set_tty (fileno (tty_out
->input
),
1280 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1283 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1291 /* Set up the proper status flags for use of a pty. */
1296 /* I'm told that TOICREMOTE does not mean control chars
1297 "can't be sent" but rather that they don't have
1298 input-editing or signaling effects.
1299 That should be good, because we have other ways
1300 to do those things in Emacs.
1301 However, telnet mode seems not to work on 4.2.
1302 So TIOCREMOTE is turned off now. */
1304 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1305 will hang. In particular, the "timeout" feature (which
1306 causes a read to return if there is no data available)
1307 does this. Also it is known that telnet mode will hang
1308 in such a way that Emacs must be stopped (perhaps this
1309 is the same problem).
1311 If TIOCREMOTE is turned off, then there is a bug in
1312 hp-ux which sometimes loses data. Apparently the
1313 code which blocks the master process when the internal
1314 buffer fills up does not work. Other than this,
1315 though, everything else seems to work fine.
1317 Since the latter lossage is more benign, we may as well
1318 lose that way. -- cph */
1320 #if defined (UNIX98_PTYS)
1323 ioctl (fd
, FIONBIO
, &on
);
1328 #endif /* HAVE_PTYS */
1331 #include <sys/socket.h>
1333 #endif /* HAVE_SOCKETS */
1336 #ifndef HAVE_H_ERRNO
1339 #endif /* TRY_AGAIN */
1342 init_system_name (void)
1344 #ifndef HAVE_GETHOSTNAME
1347 Vsystem_name
= build_string (uts
.nodename
);
1348 #else /* HAVE_GETHOSTNAME */
1349 unsigned int hostname_size
= 256;
1350 char *hostname
= (char *) alloca (hostname_size
);
1352 /* Try to get the host name; if the buffer is too short, try
1353 again. Apparently, the only indication gethostname gives of
1354 whether the buffer was large enough is the presence or absence
1355 of a '\0' in the string. Eech. */
1358 gethostname (hostname
, hostname_size
- 1);
1359 hostname
[hostname_size
- 1] = '\0';
1361 /* Was the buffer large enough for the '\0'? */
1362 if (strlen (hostname
) < hostname_size
- 1)
1365 hostname_size
<<= 1;
1366 hostname
= (char *) alloca (hostname_size
);
1369 /* Turn the hostname into the official, fully-qualified hostname.
1370 Don't do this if we're going to dump; this can confuse system
1371 libraries on some machines and make the dumped emacs core dump. */
1374 #endif /* not CANNOT_DUMP */
1375 if (! strchr (hostname
, '.'))
1378 #ifdef HAVE_GETADDRINFO
1379 struct addrinfo
*res
;
1380 struct addrinfo hints
;
1383 memset (&hints
, 0, sizeof (hints
));
1384 hints
.ai_socktype
= SOCK_STREAM
;
1385 hints
.ai_flags
= AI_CANONNAME
;
1387 for (count
= 0;; count
++)
1389 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1390 || ret
!= EAI_AGAIN
)
1395 Fsleep_for (make_number (1), Qnil
);
1400 struct addrinfo
*it
= res
;
1403 char *fqdn
= it
->ai_canonname
;
1404 if (fqdn
&& strchr (fqdn
, '.')
1405 && strcmp (fqdn
, "localhost.localdomain") != 0)
1411 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1412 strcpy (hostname
, it
->ai_canonname
);
1416 #else /* !HAVE_GETADDRINFO */
1418 for (count
= 0;; count
++)
1424 hp
= gethostbyname (hostname
);
1426 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1433 Fsleep_for (make_number (1), Qnil
);
1438 char *fqdn
= (char *) hp
->h_name
;
1440 if (!strchr (fqdn
, '.'))
1442 /* We still don't have a fully qualified domain name.
1443 Try to find one in the list of alternate names */
1444 char **alias
= hp
->h_aliases
;
1446 && (!strchr (*alias
, '.')
1447 || !strcmp (*alias
, "localhost.localdomain")))
1454 #endif /* !HAVE_GETADDRINFO */
1456 #endif /* HAVE_SOCKETS */
1457 Vsystem_name
= build_string (hostname
);
1458 #endif /* HAVE_GETHOSTNAME */
1461 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1462 if (*p
== ' ' || *p
== '\t')
1467 /* POSIX signals support - DJB */
1468 /* Anyone with POSIX signals should have ANSI C declarations */
1470 sigset_t empty_mask
;
1475 sys_signal (int signal_number
, signal_handler_t action
)
1477 struct sigaction new_action
, old_action
;
1478 sigemptyset (&new_action
.sa_mask
);
1479 new_action
.sa_handler
= action
;
1480 new_action
.sa_flags
= 0;
1481 #if defined (SA_RESTART)
1482 /* Emacs mostly works better with restartable system services. If this
1483 flag exists, we probably want to turn it on here.
1484 However, on some systems this resets the timeout of `select'
1485 which means that `select' never finishes if it keeps getting signals.
1486 BROKEN_SA_RESTART is defined on those systems. */
1487 /* It's not clear why the comment above says "mostly works better". --Stef
1488 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1489 for pending input so we need long-running syscalls to be interrupted
1490 after a signal that sets the interrupt_input_pending flag. */
1491 /* Non-interactive keyboard input goes through stdio, where we always
1492 want restartable system calls. */
1493 # if defined (BROKEN_SA_RESTART) || defined (SYNC_INPUT)
1496 new_action
.sa_flags
= SA_RESTART
;
1498 sigaction (signal_number
, &new_action
, &old_action
);
1499 return (old_action
.sa_handler
);
1502 #endif /* WINDOWSNT */
1505 /* If we're compiling with GCC, we don't need this function, since it
1506 can be written as a macro. */
1508 sys_sigmask (int sig
)
1511 sigemptyset (&mask
);
1512 sigaddset (&mask
, sig
);
1517 /* I'd like to have these guys return pointers to the mask storage in here,
1518 but there'd be trouble if the code was saving multiple masks. I'll be
1519 safe and pass the structure. It normally won't be more than 2 bytes
1523 sys_sigblock (sigset_t new_mask
)
1526 pthread_sigmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1531 sys_sigunblock (sigset_t new_mask
)
1534 pthread_sigmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1539 sys_sigsetmask (sigset_t new_mask
)
1542 pthread_sigmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1547 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1548 static char *my_sys_siglist
[NSIG
];
1552 # define sys_siglist my_sys_siglist
1558 sigemptyset (&empty_mask
);
1560 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1564 sys_siglist
[SIGABRT
] = "Aborted";
1567 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1570 sys_siglist
[SIGALRM
] = "Alarm clock";
1573 sys_siglist
[SIGBUS
] = "Bus error";
1576 sys_siglist
[SIGCLD
] = "Child status changed";
1579 sys_siglist
[SIGCHLD
] = "Child status changed";
1582 sys_siglist
[SIGCONT
] = "Continued";
1585 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1588 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1591 sys_siglist
[SIGEMT
] = "Emulation trap";
1594 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1597 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1600 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1603 sys_siglist
[SIGHUP
] = "Hangup";
1606 sys_siglist
[SIGILL
] = "Illegal instruction";
1609 sys_siglist
[SIGINT
] = "Interrupt";
1612 sys_siglist
[SIGIO
] = "I/O possible";
1615 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1618 sys_siglist
[SIGIOT
] = "IOT trap";
1621 sys_siglist
[SIGKILL
] = "Killed";
1624 sys_siglist
[SIGLOST
] = "Resource lost";
1627 sys_siglist
[SIGLWP
] = "SIGLWP";
1630 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1633 sys_siglist
[SIGWIND
] = "SIGPHONE";
1636 sys_siglist
[SIGPIPE
] = "Broken pipe";
1639 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1642 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1645 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1648 sys_siglist
[SIGPWR
] = "Power-fail restart";
1651 sys_siglist
[SIGQUIT
] = "Quit";
1654 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1657 sys_siglist
[SIGSAK
] = "Secure attention";
1660 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1663 sys_siglist
[SIGSOUND
] = "Sound completed";
1666 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1669 sys_siglist
[SIGSTP
] = "Stopped (user)";
1672 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1675 sys_siglist
[SIGTERM
] = "Terminated";
1678 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1681 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1684 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1687 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1690 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1693 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1696 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1699 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1702 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1705 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1708 sys_siglist
[SIGWINCH
] = "Window size changed";
1711 sys_siglist
[SIGWIND
] = "SIGWIND";
1714 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1717 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1720 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1729 /* Figure out how many bits the system's random number generator uses.
1730 `random' and `lrand48' are assumed to return 31 usable bits.
1731 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1732 so we'll shift it and treat it like the 15-bit USG `rand'. */
1736 # define RAND_BITS 31
1737 # else /* !HAVE_RANDOM */
1738 # ifdef HAVE_LRAND48
1739 # define RAND_BITS 31
1740 # define random lrand48
1741 # else /* !HAVE_LRAND48 */
1742 # define RAND_BITS 15
1743 # if RAND_MAX == 32767
1744 # define random rand
1745 # else /* RAND_MAX != 32767 */
1746 # if RAND_MAX == 2147483647
1747 # define random() (rand () >> 16)
1748 # else /* RAND_MAX != 2147483647 */
1750 # define random rand
1752 # define random() (rand () >> 16)
1754 # endif /* RAND_MAX != 2147483647 */
1755 # endif /* RAND_MAX != 32767 */
1756 # endif /* !HAVE_LRAND48 */
1757 # endif /* !HAVE_RANDOM */
1758 #endif /* !RAND_BITS */
1761 seed_random (long int arg
)
1764 srandom ((unsigned int)arg
);
1766 # ifdef HAVE_LRAND48
1769 srand ((unsigned int)arg
);
1775 * Return a nonnegative random integer out of whatever we've got.
1776 * It contains enough bits to make a random (signed) Emacs fixnum.
1777 * This suffices even for a 64-bit architecture with a 15-bit rand.
1784 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1785 val
= (random () ^ (val
<< RAND_BITS
)
1786 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
1787 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
1788 return val
& INTMASK
;
1791 #ifndef HAVE_STRERROR
1794 strerror (int errnum
)
1796 extern char *sys_errlist
[];
1797 extern int sys_nerr
;
1799 if (errnum
>= 0 && errnum
< sys_nerr
)
1800 return sys_errlist
[errnum
];
1801 return (char *) "Unknown error";
1803 #endif /* not WINDOWSNT */
1804 #endif /* ! HAVE_STRERROR */
1806 #ifndef HAVE_SNPRINTF
1807 /* Approximate snprintf as best we can on ancient hosts that lack it. */
1809 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
1811 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
1812 ptrdiff_t nbytes
= size
- 1;
1817 va_start (ap
, format
);
1818 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
1822 if (nbytes
== size
- 1)
1824 /* Calculate the length of the string that would have been created
1825 had the buffer been large enough. */
1826 char stackbuf
[4000];
1828 ptrdiff_t bsize
= sizeof stackbuf
;
1829 va_start (ap
, format
);
1830 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
1836 if (INT_MAX
< nbytes
)
1850 emacs_open (const char *path
, int oflag
, int mode
)
1852 register int rtnval
;
1854 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1855 && (errno
== EINTR
))
1861 emacs_close (int fd
)
1864 register int rtnval
;
1866 while ((rtnval
= close (fd
)) == -1
1867 && (errno
== EINTR
))
1870 /* If close is interrupted SunOS 4.1 may or may not have closed the
1871 file descriptor. If it did the second close will fail with
1872 errno = EBADF. That means we have succeeded. */
1873 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1879 /* Maximum number of bytes to read or write in a single system call.
1880 This works around a serious bug in Linux kernels before 2.6.16; see
1881 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1882 It's likely to work around similar bugs in other operating systems, so do it
1883 on all platforms. Round INT_MAX down to a page size, with the conservative
1884 assumption that page sizes are at most 2**18 bytes (any kernel with a
1885 page size larger than that shouldn't have the bug). */
1886 #ifndef MAX_RW_COUNT
1887 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1890 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1891 Return the number of bytes read, which might be less than NBYTE.
1892 On error, set errno and return -1. */
1894 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
1896 register ssize_t rtnval
;
1898 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1899 passes a size that large to emacs_read. */
1901 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1902 && (errno
== EINTR
))
1907 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1908 or if a partial write occurs. Return the number of bytes written, setting
1909 errno if this is less than NBYTE. */
1911 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
1914 ptrdiff_t bytes_written
;
1920 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1927 /* I originally used `QUIT' but that might causes files to
1928 be truncated if you hit C-g in the middle of it. --Stef */
1929 process_pending_signals ();
1939 bytes_written
+= rtnval
;
1942 return (bytes_written
);
1945 static struct allocator
const emacs_norealloc_allocator
=
1946 { xmalloc
, NULL
, xfree
, memory_full
};
1948 /* Get the symbolic link value of FILENAME. Return a pointer to a
1949 NUL-terminated string. If readlink fails, return NULL and set
1950 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1951 Otherwise, allocate memory and return a pointer to that memory. If
1952 memory allocation fails, diagnose and fail without returning. If
1953 successful, store the length of the symbolic link into *LINKLEN. */
1955 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1957 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1958 &emacs_norealloc_allocator
, careadlinkatcwd
);
1963 * All of the following are for USG.
1965 * On USG systems the system calls are INTERRUPTIBLE by signals
1966 * that the user program has elected to catch. Thus the system call
1967 * must be retried in these cases. To handle this without massive
1968 * changes in the source code, we remap the standard system call names
1969 * to names for our own functions in sysdep.c that do the system call
1970 * with retries. Actually, for portability reasons, it is good
1971 * programming practice, as this example shows, to limit all actual
1972 * system calls to a single occurrence in the source. Sure, this
1973 * adds an extra level of function call overhead but it is almost
1974 * always negligible. Fred Fish, Unisoft Systems Inc.
1978 * Warning, this function may not duplicate 4.2 action properly
1979 * under error conditions.
1985 /* In 4.1, param.h fails to define this. */
1986 #define MAXPATHLEN 1024
1990 getwd (char *pathname
)
1992 char *npath
, *spath
;
1993 extern char *getcwd (char *, size_t);
1995 BLOCK_INPUT
; /* getcwd uses malloc */
1996 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2002 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2003 up to first slash. Should be harmless on other systems. */
2004 while (*npath
&& *npath
!= '/')
2006 strcpy (pathname
, npath
);
2007 free (spath
); /* getcwd uses malloc */
2012 #endif /* HAVE_GETWD */
2015 * Emulate rename using unlink/link. Note that this is
2016 * only partially correct. Also, doesn't enforce restriction
2017 * that files be of same type (regular->regular, dir->dir, etc).
2023 rename (const char *from
, const char *to
)
2025 if (access (from
, 0) == 0)
2028 if (link (from
, to
) == 0)
2029 if (unlink (from
) == 0)
2038 #if defined (HPUX) && !defined (HAVE_PERROR)
2040 /* HPUX curses library references perror, but as far as we know
2041 it won't be called. Anyway this definition will do for now. */
2047 #endif /* HPUX and not HAVE_PERROR */
2050 * This function will go away as soon as all the stubs fixed. (fnf)
2054 croak (char *badfunc
)
2056 printf ("%s not yet implemented\r\n", badfunc
);
2057 reset_all_sys_modes ();
2063 /* Directory routines for systems that don't have them. */
2065 #ifdef HAVE_DIRENT_H
2069 #if !defined (HAVE_CLOSEDIR)
2072 closedir (DIR *dirp
/* stream from opendir */)
2076 rtnval
= emacs_close (dirp
->dd_fd
);
2077 xfree ((char *) dirp
);
2081 #endif /* not HAVE_CLOSEDIR */
2082 #endif /* HAVE_DIRENT_H */
2085 /* Return a struct timeval that is roughly equivalent to T.
2086 Use the least timeval not less than T.
2087 Return an extremal value if the result would overflow. */
2089 make_timeval (EMACS_TIME t
)
2092 tv
.tv_sec
= t
.tv_sec
;
2093 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2095 if (t
.tv_nsec
% 1000 != 0)
2097 if (tv
.tv_usec
< 999999)
2099 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2109 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2110 ATIME and MTIME, respectively.
2111 FD must be either negative -- in which case it is ignored --
2112 or a file descriptor that is open on FILE.
2113 If FD is nonnegative, then FILE can be NULL. */
2115 set_file_times (int fd
, const char *filename
,
2116 EMACS_TIME atime
, EMACS_TIME mtime
)
2118 struct timespec timespec
[2];
2119 timespec
[0] = atime
;
2120 timespec
[1] = mtime
;
2121 return fdutimens (fd
, filename
, timespec
);
2124 /* mkdir and rmdir functions, for systems which don't have them. */
2128 * Written by Robert Rother, Mariah Corporation, August 1985.
2130 * If you want it, it's yours. All I ask in return is that if you
2131 * figure out how to do this in a Bourne Shell script you send me
2133 * sdcsvax!rmr or rmr@uscd
2135 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2136 * subroutine. 11Mar86; hoptoad!gnu
2138 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2139 * subroutine didn't return EEXIST. It does now.
2146 mkdir (char *dpath
, int dmode
)
2150 struct stat statbuf
;
2152 if (stat (dpath
, &statbuf
) == 0)
2154 errno
= EEXIST
; /* Stat worked, so it already exists */
2158 /* If stat fails for a reason other than non-existence, return error */
2159 if (errno
!= ENOENT
)
2162 synch_process_alive
= 1;
2163 switch (cpid
= fork ())
2166 case -1: /* Error in fork */
2167 return (-1); /* Errno is set already */
2169 case 0: /* Child process */
2171 * Cheap hack to set mode of new directory. Since this
2172 * child process is going away anyway, we zap its umask.
2173 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2174 * directory. Does anybody care?
2176 status
= umask (0); /* Get current umask */
2177 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2178 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2185 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2186 _exit (-1); /* Can't exec /bin/mkdir */
2188 default: /* Parent process */
2189 wait_for_termination (cpid
);
2192 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2193 || synch_process_termsig
!= 0)
2195 errno
= EIO
; /* We don't know why, but */
2196 return -1; /* /bin/mkdir failed */
2201 #endif /* not HAVE_MKDIR */
2207 int cpid
, status
, fd
;
2208 struct stat statbuf
;
2210 if (stat (dpath
, &statbuf
) != 0)
2212 /* Stat just set errno. We don't have to */
2216 synch_process_alive
= 1;
2217 switch (cpid
= fork ())
2220 case -1: /* Error in fork */
2221 return (-1); /* Errno is set already */
2223 case 0: /* Child process */
2224 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2231 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2232 _exit (-1); /* Can't exec /bin/rmdir */
2234 default: /* Parent process */
2235 wait_for_termination (cpid
);
2238 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2239 || synch_process_termsig
!= 0)
2241 errno
= EIO
; /* We don't know why, but */
2242 return -1; /* /bin/rmdir failed */
2247 #endif /* !HAVE_RMDIR */
2250 #ifndef HAVE_STRSIGNAL
2252 strsignal (int code
)
2256 if (0 <= code
&& code
< NSIG
)
2258 /* Cast to suppress warning if the table has const char *. */
2259 signame
= (char *) sys_siglist
[code
];
2264 #endif /* HAVE_STRSIGNAL */
2267 /* For make-serial-process */
2269 serial_open (char *port
)
2273 fd
= emacs_open ((char*) port
,
2286 error ("Could not open %s: %s",
2287 port
, emacs_strerror (errno
));
2290 ioctl (fd
, TIOCEXCL
, (char *) 0);
2296 #if !defined (HAVE_CFMAKERAW)
2297 /* Workaround for targets which are missing cfmakeraw. */
2298 /* Pasted from man page. */
2300 cfmakeraw (struct termios
*termios_p
)
2302 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2303 termios_p
->c_oflag
&= ~OPOST
;
2304 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2305 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2306 termios_p
->c_cflag
|= CS8
;
2308 #endif /* !defined (HAVE_CFMAKERAW */
2310 #if !defined (HAVE_CFSETSPEED)
2311 /* Workaround for targets which are missing cfsetspeed. */
2313 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2315 return (cfsetispeed (termios_p
, vitesse
)
2316 + cfsetospeed (termios_p
, vitesse
));
2320 /* For serial-process-configure */
2322 serial_configure (struct Lisp_Process
*p
,
2323 Lisp_Object contact
)
2325 Lisp_Object childp2
= Qnil
;
2326 Lisp_Object tem
= Qnil
;
2327 struct termios attr
;
2329 char summary
[4] = "???"; /* This usually becomes "8N1". */
2331 childp2
= Fcopy_sequence (p
->childp
);
2333 /* Read port attributes and prepare default configuration. */
2334 err
= tcgetattr (p
->outfd
, &attr
);
2336 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2338 #if defined (CLOCAL)
2339 attr
.c_cflag
|= CLOCAL
;
2342 attr
.c_cflag
|= CREAD
;
2345 /* Configure speed. */
2346 if (!NILP (Fplist_member (contact
, QCspeed
)))
2347 tem
= Fplist_get (contact
, QCspeed
);
2349 tem
= Fplist_get (p
->childp
, QCspeed
);
2351 err
= cfsetspeed (&attr
, XINT (tem
));
2353 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2354 emacs_strerror (errno
));
2355 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2357 /* Configure bytesize. */
2358 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2359 tem
= Fplist_get (contact
, QCbytesize
);
2361 tem
= Fplist_get (p
->childp
, QCbytesize
);
2363 tem
= make_number (8);
2365 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2366 error (":bytesize must be nil (8), 7, or 8");
2367 summary
[0] = XINT (tem
) + '0';
2368 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2369 attr
.c_cflag
&= ~CSIZE
;
2370 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2372 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2373 if (XINT (tem
) != 8)
2374 error ("Bytesize cannot be changed");
2376 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2378 /* Configure parity. */
2379 if (!NILP (Fplist_member (contact
, QCparity
)))
2380 tem
= Fplist_get (contact
, QCparity
);
2382 tem
= Fplist_get (p
->childp
, QCparity
);
2383 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2384 error (":parity must be nil (no parity), `even', or `odd'");
2385 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2386 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2387 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2392 else if (EQ (tem
, Qeven
))
2395 attr
.c_cflag
|= PARENB
;
2396 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2398 else if (EQ (tem
, Qodd
))
2401 attr
.c_cflag
|= (PARENB
| PARODD
);
2402 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2405 /* Don't error on no parity, which should be set by cfmakeraw. */
2407 error ("Parity cannot be configured");
2409 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2411 /* Configure stopbits. */
2412 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2413 tem
= Fplist_get (contact
, QCstopbits
);
2415 tem
= Fplist_get (p
->childp
, QCstopbits
);
2417 tem
= make_number (1);
2419 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2420 error (":stopbits must be nil (1 stopbit), 1, or 2");
2421 summary
[2] = XINT (tem
) + '0';
2422 #if defined (CSTOPB)
2423 attr
.c_cflag
&= ~CSTOPB
;
2424 if (XINT (tem
) == 2)
2425 attr
.c_cflag
|= CSTOPB
;
2427 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2428 if (XINT (tem
) != 1)
2429 error ("Stopbits cannot be configured");
2431 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2433 /* Configure flowcontrol. */
2434 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2435 tem
= Fplist_get (contact
, QCflowcontrol
);
2437 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2438 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2439 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2440 #if defined (CRTSCTS)
2441 attr
.c_cflag
&= ~CRTSCTS
;
2443 #if defined (CNEW_RTSCTS)
2444 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2446 #if defined (IXON) && defined (IXOFF)
2447 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2451 /* Already configured. */
2453 else if (EQ (tem
, Qhw
))
2455 #if defined (CRTSCTS)
2456 attr
.c_cflag
|= CRTSCTS
;
2457 #elif defined (CNEW_RTSCTS)
2458 attr
.c_cflag
|= CNEW_RTSCTS
;
2460 error ("Hardware flowcontrol (RTS/CTS) not supported");
2463 else if (EQ (tem
, Qsw
))
2465 #if defined (IXON) && defined (IXOFF)
2466 attr
.c_iflag
|= (IXON
| IXOFF
);
2468 error ("Software flowcontrol (XON/XOFF) not supported");
2471 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2473 /* Activate configuration. */
2474 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2476 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2478 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2479 p
->childp
= childp2
;
2482 #endif /* not DOS_NT */
2484 /* System depended enumeration of and access to system processes a-la ps(1). */
2488 /* Process enumeration and access via /proc. */
2491 list_system_processes (void)
2493 Lisp_Object procdir
, match
, proclist
, next
;
2494 struct gcpro gcpro1
, gcpro2
;
2495 register Lisp_Object tail
;
2497 GCPRO2 (procdir
, match
);
2498 /* For every process on the system, there's a directory in the
2499 "/proc" pseudo-directory whose name is the numeric ID of that
2501 procdir
= build_string ("/proc");
2502 match
= build_string ("[0-9]+");
2503 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2505 /* `proclist' gives process IDs as strings. Destructively convert
2506 each string into a number. */
2507 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2510 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2514 /* directory_files_internal returns the files in reverse order; undo
2516 proclist
= Fnreverse (proclist
);
2520 #elif defined BSD_SYSTEM
2523 list_system_processes (void)
2526 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2528 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2531 struct kinfo_proc
*procs
;
2534 struct gcpro gcpro1
;
2535 Lisp_Object proclist
= Qnil
;
2537 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2540 procs
= xmalloc (len
);
2541 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2548 len
/= sizeof (struct kinfo_proc
);
2549 for (i
= 0; i
< len
; i
++)
2552 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2554 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2564 /* The WINDOWSNT implementation is in w32.c.
2565 The MSDOS implementation is in dosfns.c. */
2566 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2569 list_system_processes (void)
2574 #endif /* !defined (WINDOWSNT) */
2578 time_from_jiffies (unsigned long long tval
, long hz
)
2580 unsigned long long s
= tval
/ hz
;
2581 unsigned long long frac
= tval
% hz
;
2585 if (TYPE_MAXIMUM (time_t) < s
)
2587 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2588 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2589 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2592 /* This is reachable only in the unlikely case that HZ * HZ
2593 exceeds ULLONG_MAX. It calculates an approximation that is
2594 guaranteed to be in range. */
2595 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2596 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2597 ns
= frac
/ hz_per_ns
;
2600 EMACS_SET_SECS_NSECS (t
, s
, ns
);
2605 ltime_from_jiffies (unsigned long long tval
, long hz
)
2607 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2608 return make_lisp_time (t
);
2617 EMACS_SET_SECS_NSECS (up
, 0, 0);
2620 fup
= fopen ("/proc/uptime", "r");
2624 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2625 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2627 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2628 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2629 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2632 if (TYPE_MAXIMUM (time_t) < upsec
)
2634 upsec
= TYPE_MAXIMUM (time_t);
2635 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2639 int upfraclen
= upfrac_end
- upfrac_start
;
2640 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2642 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2644 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2646 EMACS_SET_SECS_NSECS (up
, upsec
, upfrac
);
2655 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2656 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2659 procfs_ttyname (int rdev
)
2662 char name
[PATH_MAX
];
2665 fdev
= fopen ("/proc/tty/drivers", "r");
2670 unsigned long minor_beg
, minor_end
;
2671 char minor
[25]; /* 2 32-bit numbers + dash */
2674 while (!feof (fdev
) && !ferror (fdev
))
2676 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2677 && major
== MAJOR (rdev
))
2679 minor_beg
= strtoul (minor
, &endp
, 0);
2681 minor_end
= minor_beg
;
2682 else if (*endp
== '-')
2683 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2687 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2689 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2697 return build_string (name
);
2700 static unsigned long
2701 procfs_get_total_memory (void)
2704 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2707 fmem
= fopen ("/proc/meminfo", "r");
2711 unsigned long entry_value
;
2712 char entry_name
[20]; /* the longest I saw is 13+1 */
2714 while (!feof (fmem
) && !ferror (fmem
))
2716 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2717 && strcmp (entry_name
, "MemTotal:") == 0)
2719 retval
= entry_value
;
2730 system_process_attributes (Lisp_Object pid
)
2732 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2736 long clocks_per_sec
;
2738 char procbuf
[1025], *p
, *q
;
2741 const char *cmd
= NULL
;
2742 char *cmdline
= NULL
;
2743 ptrdiff_t cmdsize
= 0, cmdline_size
;
2746 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2749 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2750 long priority
, niceness
, rss
;
2751 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2752 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2754 Lisp_Object attrs
= Qnil
;
2755 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2756 struct gcpro gcpro1
, gcpro2
;
2758 CHECK_NUMBER_OR_FLOAT (pid
);
2759 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2760 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2761 if (stat (procfn
, &st
) < 0)
2764 GCPRO2 (attrs
, decoded_cmd
);
2768 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2770 pw
= getpwuid (uid
);
2773 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2776 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2778 gr
= getgrgid (gid
);
2781 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2783 strcpy (fn
, procfn
);
2784 procfn_end
= fn
+ strlen (fn
);
2785 strcpy (procfn_end
, "/stat");
2786 fd
= emacs_open (fn
, O_RDONLY
, 0);
2787 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2789 procbuf
[nread
] = '\0';
2792 p
= strchr (p
, '(');
2795 q
= strrchr (p
+ 1, ')');
2810 /* Command name is encoded in locale-coding-system; decode it. */
2811 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2812 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2813 Vlocale_coding_system
, 0);
2814 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2818 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2820 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2821 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2822 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2823 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2824 &u_time
, &s_time
, &cutime
, &cstime
,
2825 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2830 state_str
[1] = '\0';
2831 tem
= build_string (state_str
);
2832 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2834 /* Stops GCC whining about limited range of data type. */
2839 thcount_eint
= thcount
;
2840 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2841 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2842 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2843 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2844 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2845 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2846 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2847 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2848 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2849 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2850 if (clocks_per_sec
< 0)
2851 clocks_per_sec
= 100;
2852 attrs
= Fcons (Fcons (Qutime
,
2853 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2855 attrs
= Fcons (Fcons (Qstime
,
2856 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2858 attrs
= Fcons (Fcons (Qtime
,
2859 ltime_from_jiffies (s_time
+ u_time
,
2862 attrs
= Fcons (Fcons (Qcutime
,
2863 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2865 attrs
= Fcons (Fcons (Qcstime
,
2866 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2868 attrs
= Fcons (Fcons (Qctime
,
2869 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2871 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2872 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2873 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2874 EMACS_GET_TIME (tnow
);
2875 telapsed
= get_up_time ();
2876 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2877 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2878 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2879 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2880 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2881 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2882 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2883 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2884 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2885 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2886 / EMACS_TIME_TO_DOUBLE (telapsed
));
2889 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2890 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2893 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2900 strcpy (procfn_end
, "/cmdline");
2901 fd
= emacs_open (fn
, O_RDONLY
, 0);
2905 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2907 if (emacs_read (fd
, &ch
, 1) != 1)
2910 if (isspace (c
) || c
== '\\')
2911 cmdline_size
++; /* for later quoting, see below */
2915 cmdline
= xmalloc (cmdline_size
+ 1);
2916 lseek (fd
, 0L, SEEK_SET
);
2918 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2919 cmdline
[nread
++] = '\0';
2922 /* Assigning zero to `nread' makes us skip the following
2923 two loops, assign zero to cmdline_size, and enter the
2924 following `if' clause that handles unknown command
2928 /* We don't want trailing null characters. */
2929 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2931 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2933 /* Escape-quote whitespace and backslashes. */
2934 if (isspace (*p
) || *p
== '\\')
2936 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2940 else if (*p
== '\0')
2943 cmdline_size
= nread
;
2950 cmdsize
= strlen (cmd
);
2951 cmdline_size
= cmdsize
+ 2;
2952 cmdline
= xmalloc (cmdline_size
+ 1);
2953 strcpy (cmdline
, "[");
2954 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2957 /* Command line is encoded in locale-coding-system; decode it. */
2958 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2959 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2960 Vlocale_coding_system
, 0);
2962 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2969 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2971 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2972 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2973 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2974 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2975 #undef _FILE_OFFSET_BITS
2977 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2982 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2983 #define _FILE_OFFSET_BITS 64
2984 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2986 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2989 system_process_attributes (Lisp_Object pid
)
2991 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2996 struct psinfo pinfo
;
3002 Lisp_Object attrs
= Qnil
;
3003 Lisp_Object decoded_cmd
, tem
;
3004 struct gcpro gcpro1
, gcpro2
;
3006 CHECK_NUMBER_OR_FLOAT (pid
);
3007 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3008 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3009 if (stat (procfn
, &st
) < 0)
3012 GCPRO2 (attrs
, decoded_cmd
);
3016 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3018 pw
= getpwuid (uid
);
3021 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3024 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3026 gr
= getgrgid (gid
);
3029 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3031 strcpy (fn
, procfn
);
3032 procfn_end
= fn
+ strlen (fn
);
3033 strcpy (procfn_end
, "/psinfo");
3034 fd
= emacs_open (fn
, O_RDONLY
, 0);
3036 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3038 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3039 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3040 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3044 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3045 state_str
[1] = '\0';
3046 tem
= build_string (state_str
);
3047 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3050 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3051 need to get a string from it. */
3053 /* FIXME: missing: Qtpgid */
3065 Are they available? */
3067 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3068 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3069 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3070 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3071 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3073 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3074 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3075 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3077 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3078 range 0 .. 2**15, representing 0.0 .. 1.0. */
3079 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3080 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3083 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3084 strlen (pinfo
.pr_fname
)),
3085 Vlocale_coding_system
, 0);
3086 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3088 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3089 strlen (pinfo
.pr_psargs
)),
3090 Vlocale_coding_system
, 0);
3091 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3101 #elif defined __FreeBSD__
3104 timeval_to_EMACS_TIME (struct timeval t
)
3107 EMACS_SET_SECS_NSECS (e
, t
.tv_sec
, t
.tv_usec
* 1000);
3112 make_lisp_timeval (struct timeval t
)
3114 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3118 system_process_attributes (Lisp_Object pid
)
3121 int pagesize
= getpagesize ();
3128 char args
[MAXPATHLEN
];
3131 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3132 struct kinfo_proc proc
;
3133 size_t proclen
= sizeof proc
;
3135 struct gcpro gcpro1
, gcpro2
;
3136 Lisp_Object attrs
= Qnil
;
3137 Lisp_Object decoded_comm
;
3139 CHECK_NUMBER_OR_FLOAT (pid
);
3140 CONS_TO_INTEGER (pid
, int, proc_id
);
3143 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3146 GCPRO2 (attrs
, decoded_comm
);
3148 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3151 pw
= getpwuid (proc
.ki_uid
);
3154 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3156 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3159 gr
= getgrgid (proc
.ki_svgid
);
3162 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3164 decoded_comm
= code_convert_string_norecord
3165 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3166 Vlocale_coding_system
, 0);
3168 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3170 char state
[2] = {'\0', '\0'};
3171 switch (proc
.ki_stat
)
3193 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3196 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3197 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3198 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3201 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3204 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3206 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3207 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3208 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3209 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3210 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3212 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3214 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3217 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3218 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3219 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3221 attrs
= Fcons (Fcons (Qcutime
,
3222 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3224 attrs
= Fcons (Fcons (Qcstime
,
3225 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3228 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3229 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3230 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3232 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3234 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3235 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3236 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3237 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3238 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3241 EMACS_GET_TIME (now
);
3242 EMACS_SUB_TIME (t
, now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3243 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3245 len
= sizeof fscale
;
3246 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3251 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3253 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3254 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3255 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3259 len
= sizeof npages
;
3260 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3262 double pmem
= (proc
.ki_flag
& P_INMEM
3263 ? 100.0 * proc
.ki_rssize
/ npages
3265 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3268 mib
[2] = KERN_PROC_ARGS
;
3270 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3273 for (i
= 0; i
< len
; i
++)
3275 if (! args
[i
] && i
< len
- 1)
3280 (code_convert_string_norecord
3281 (make_unibyte_string (args
, strlen (args
)),
3282 Vlocale_coding_system
, 0));
3284 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3291 /* The WINDOWSNT implementation is in w32.c.
3292 The MSDOS implementation is in dosfns.c. */
3293 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3296 system_process_attributes (Lisp_Object pid
)
3301 #endif /* !defined (WINDOWSNT) */