1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2011
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 */
31 #endif /* HAVE_LIMITS_H */
34 #include <allocator.h>
35 #include <careadlinkat.h>
36 #include <ignore-value.h>
39 #include "sysselect.h"
40 #include "blockinput.h"
44 #define write sys_write
49 #endif /* not WINDOWSNT */
51 #include <sys/types.h>
58 #define setpgrp setpgid
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"
111 #ifndef HAVE_STRUCT_UTIMBUF
112 /* We want to use utime rather than utimes, but we couldn't find the
113 structure declaration. We'll use the traditional one. */
121 static int emacs_get_tty (int, struct emacs_tty
*);
122 static int emacs_set_tty (int, struct emacs_tty
*, int);
123 #if defined TIOCNOTTY || defined USG5 || defined CYGWIN
124 static void croak (char *) NO_RETURN
;
127 /* Declare here, including term.h is problematic on some systems. */
128 extern void tputs (const char *, int, int (*)(int));
130 static const int baud_convert
[] =
132 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
133 1800, 2400, 4800, 9600, 19200, 38400
137 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
139 /* Return the current working directory. Returns NULL on errors.
140 Any other returned value must be freed with free. This is used
141 only when get_current_dir_name is not defined on the system. */
143 get_current_dir_name (void)
147 struct stat dotstat
, pwdstat
;
148 /* If PWD is accurate, use it instead of calling getwd. PWD is
149 sometimes a nicer name, and using it may avoid a fatal error if a
150 parent directory is searchable but not readable. */
151 if ((pwd
= getenv ("PWD")) != 0
152 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
153 && stat (pwd
, &pwdstat
) == 0
154 && stat (".", &dotstat
) == 0
155 && dotstat
.st_ino
== pwdstat
.st_ino
156 && dotstat
.st_dev
== pwdstat
.st_dev
158 && strlen (pwd
) < MAXPATHLEN
162 buf
= (char *) malloc (strlen (pwd
) + 1);
170 size_t buf_size
= 1024;
171 buf
= (char *) malloc (buf_size
);
176 if (getcwd (buf
, buf_size
) == buf
)
180 int tmp_errno
= errno
;
186 buf
= (char *) realloc (buf
, buf_size
);
194 /* We need MAXPATHLEN here. */
195 buf
= (char *) malloc (MAXPATHLEN
+ 1);
198 if (getwd (buf
) == NULL
)
200 int tmp_errno
= errno
;
212 /* Discard pending input on all input descriptors. */
215 discard_tty_input (void)
218 struct emacs_tty buf
;
223 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
224 while (dos_keyread () != -1)
226 #else /* not MSDOS */
228 struct tty_display_info
*tty
;
229 for (tty
= tty_list
; tty
; tty
= tty
->next
)
231 if (tty
->input
) /* Is the device suspended? */
233 emacs_get_tty (fileno (tty
->input
), &buf
);
234 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
238 #endif /* not MSDOS */
239 #endif /* not WINDOWSNT */
245 /* Arrange for character C to be read as the next input from
247 XXX What if we have multiple ttys?
253 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
256 /* Should perhaps error if in batch mode */
258 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
259 #else /* no TIOCSTI */
260 error ("Cannot stuff terminal input characters in this version of Unix");
261 #endif /* no TIOCSTI */
267 init_baud_rate (int fd
)
277 #else /* not DOS_NT */
282 emacs_ospeed
= cfgetospeed (&sg
);
283 #endif /* not DOS_NT */
286 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
287 ? baud_convert
[emacs_ospeed
] : 9600);
294 /* Set nonzero to make following function work under dbx
295 (at least for bsd). */
296 int wait_debugging EXTERNALLY_VISIBLE
;
299 /* Wait for subprocess with process id `pid' to terminate and
300 make sure it will get eliminated (not remain forever as a zombie) */
303 wait_for_termination (int pid
)
305 wait_for_termination_1 (pid
, 0);
308 /* Like the above, but allow keyboard interruption. */
310 interruptible_wait_for_termination (int pid
)
312 wait_for_termination_1 (pid
, 1);
316 wait_for_termination_1 (int pid
, int interruptible
)
320 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined(__GNU__)
321 /* Note that kill returns -1 even if the process is just a zombie now.
322 But inevitably a SIGCHLD interrupt should be generated
323 and child_sig will do wait3 and make the process go away. */
324 /* There is some indication that there is a bug involved with
325 termination of subprocesses, perhaps involving a kernel bug too,
326 but no idea what it is. Just as a hunch we signal SIGCHLD to see
327 if that causes the problem to go away or get worse. */
328 sigsetmask (sigmask (SIGCHLD
));
329 if (0 > kill (pid
, 0))
331 sigsetmask (SIGEMPTYMASK
);
332 kill (getpid (), SIGCHLD
);
338 sigpause (SIGEMPTYMASK
);
339 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
343 #else /* not WINDOWSNT */
344 sigblock (sigmask (SIGCHLD
));
346 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
348 sigunblock (sigmask (SIGCHLD
));
352 sigsuspend (&empty_mask
);
353 #endif /* not WINDOWSNT */
354 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
361 * flush any pending output
362 * (may flush input as well; it does not matter the way we use it)
366 flush_pending_output (int channel
)
368 /* FIXME: maybe this function should be removed */
371 /* Set up the terminal at the other end of a pseudo-terminal that
372 we will be controlling an inferior through.
373 It should not echo or do line-editing, since that is done
374 in Emacs. No padding needed for insertion into an Emacs buffer. */
377 child_setup_tty (int out
)
382 emacs_get_tty (out
, &s
);
383 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
384 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
386 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
387 Some versions of GNU Hurd do not have FFDLY? */
389 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
390 /* No output delays */
392 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
393 /* No output delays */
396 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
397 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
399 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
402 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
405 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
407 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
408 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
409 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
410 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
413 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
416 #ifdef SIGNALS_VIA_CHARACTERS
417 /* the QUIT and INTR character are used in process_send_signal
418 so set them here to something useful. */
419 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
420 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
421 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
422 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
423 #endif /* not SIGNALS_VIA_CHARACTERS */
426 /* Also, PTY overloads NUL and BREAK.
427 don't ignore break, but don't signal either, so it looks like NUL. */
428 s
.main
.c_iflag
&= ~IGNBRK
;
429 s
.main
.c_iflag
&= ~BRKINT
;
430 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
431 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
432 would force it to 0377. That looks like duplicated code. */
433 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
436 /* We originally enabled ICANON (and set VEOF to 04), and then had
437 proces.c send additional EOF chars to flush the output when faced
438 with long lines, but this leads to weird effects when the
439 subprocess has disabled ICANON and ends up seeing those spurious
440 extra EOFs. So we don't send EOFs any more in
441 process.c:send_process. First we tried to disable ICANON by
442 default, so if a subsprocess sets up ICANON, it's his problem (or
443 the Elisp package that talks to it) to deal with lines that are
444 too long. But this disables some features, such as the ability
445 to send EOF signals. So we re-enabled ICANON but there is no
446 more "send eof to flush" going on (which is wrong and unportable
447 in itself). The correct way to handle too much output is to
448 buffer what could not be written and then write it again when
449 select returns ok for writing. This has it own set of
450 problems. Write is now asynchronous, is that a problem? How much
451 do we buffer, and what do we do when that limit is reached? */
453 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
454 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
455 #if 0 /* These settings only apply to non-ICANON mode. */
456 s
.main
.c_cc
[VMIN
] = 1;
457 s
.main
.c_cc
[VTIME
] = 0;
460 emacs_set_tty (out
, &s
, 0);
461 #endif /* not WINDOWSNT */
463 #endif /* not MSDOS */
466 /* Record a signal code and the handler for it. */
470 void (*handler
) (int);
473 static void save_signal_handlers (struct save_signal
*);
474 static void restore_signal_handlers (struct save_signal
*);
476 /* Suspend the Emacs process; give terminal to its superior. */
481 #if defined (SIGTSTP) && !defined (MSDOS)
484 int pgrp
= EMACS_GETPGRP (0);
485 EMACS_KILLPG (pgrp
, SIGTSTP
);
488 #else /* No SIGTSTP */
489 /* On a system where suspending is not implemented,
490 instead fork a subshell and let it talk directly to the terminal
494 #endif /* no SIGTSTP */
497 /* Fork a subshell. */
502 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
504 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
507 struct save_signal saved_handlers
[5];
509 unsigned char *volatile str_volatile
= 0;
513 saved_handlers
[0].code
= SIGINT
;
514 saved_handlers
[1].code
= SIGQUIT
;
515 saved_handlers
[2].code
= SIGTERM
;
517 saved_handlers
[3].code
= SIGIO
;
518 saved_handlers
[4].code
= 0;
520 saved_handlers
[3].code
= 0;
523 /* Mentioning current_buffer->buffer would mean including buffer.h,
524 which somehow wedges the hp compiler. So instead... */
526 dir
= intern ("default-directory");
527 if (NILP (Fboundp (dir
)))
529 dir
= Fsymbol_value (dir
);
533 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
534 str_volatile
= str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
536 memcpy (str
, SDATA (dir
), len
);
537 if (str
[len
- 1] != '/') str
[len
++] = '/';
543 save_signal_handlers (saved_handlers
);
544 synch_process_alive
= 1;
548 error ("Can't spawn subshell");
555 #ifdef DOS_NT /* MW, Aug 1993 */
558 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
561 sh
= (char *) egetenv ("SHELL");
565 /* Use our buffer's default directory for the subshell. */
567 if (str
&& chdir ((char *) str
) != 0)
570 ignore_value (write (1, "Can't chdir\n", 12));
575 close_process_descs (); /* Close Emacs's pipes/ptys */
577 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
579 char *epwd
= getenv ("PWD");
580 char old_pwd
[MAXPATHLEN
+1+4];
582 /* If PWD is set, pass it with corrected value. */
585 strcpy (old_pwd
, epwd
);
586 if (str
[len
- 1] == '/')
588 setenv ("PWD", str
, 1);
591 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
593 putenv (old_pwd
); /* restore previous value */
595 #else /* not MSDOS */
597 /* Waits for process completion */
598 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
599 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
601 write (1, "Can't execute subshell", 22);
602 #else /* not WINDOWSNT */
603 execlp (sh
, sh
, (char *) 0);
604 ignore_value (write (1, "Can't execute subshell", 22));
606 #endif /* not WINDOWSNT */
607 #endif /* not MSDOS */
610 /* Do this now if we did not do it before. */
612 save_signal_handlers (saved_handlers
);
613 synch_process_alive
= 1;
617 wait_for_termination (pid
);
619 restore_signal_handlers (saved_handlers
);
620 synch_process_alive
= 0;
624 save_signal_handlers (struct save_signal
*saved_handlers
)
626 while (saved_handlers
->code
)
628 saved_handlers
->handler
629 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
635 restore_signal_handlers (struct save_signal
*saved_handlers
)
637 while (saved_handlers
->code
)
639 signal (saved_handlers
->code
, saved_handlers
->handler
);
645 /* If SIGIO is broken, don't do anything. */
662 unrequest_sigio (void)
669 static int old_fcntl_flags
[MAXDESC
];
675 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
676 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
678 interrupts_deferred
= 0;
685 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
689 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
690 /* XXX Uhm, FASYNC is not used anymore here. */
691 /* XXX Yeah, but you need it for SIGIO, don't you? */
700 sigunblock (sigmask (SIGWINCH
));
702 sigunblock (sigmask (SIGIO
));
704 interrupts_deferred
= 0;
708 unrequest_sigio (void)
713 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
719 sigblock (sigmask (SIGWINCH
));
721 sigblock (sigmask (SIGIO
));
722 interrupts_deferred
= 1;
725 #else /* no FASYNC */
731 if (noninteractive
|| read_socket_hook
)
734 croak ("request_sigio");
738 unrequest_sigio (void)
740 if (noninteractive
|| read_socket_hook
)
743 croak ("unrequest_sigio");
752 /* Getting and setting emacs_tty structures. */
754 /* Set *TC to the parameters associated with the terminal FD.
755 Return zero if all's well, or -1 if we ran into an error we
756 couldn't deal with. */
758 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
760 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
762 /* We have those nifty POSIX tcmumbleattr functions. */
763 memset (&settings
->main
, 0, sizeof (settings
->main
));
764 if (tcgetattr (fd
, &settings
->main
) < 0)
768 /* We have survived the tempest. */
773 /* Set the parameters of the tty on FD according to the contents of
774 *SETTINGS. If FLUSHP is non-zero, we discard input.
775 Return 0 if all went well, and -1 if anything failed. */
778 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
780 /* Set the primary parameters - baud rate, character size, etcetera. */
783 /* We have those nifty POSIX tcmumbleattr functions.
784 William J. Smith <wjs@wiis.wang.com> writes:
785 "POSIX 1003.1 defines tcsetattr to return success if it was
786 able to perform any of the requested actions, even if some
787 of the requested actions could not be performed.
788 We must read settings back to ensure tty setup properly.
789 AIX requires this to keep tty from hanging occasionally." */
790 /* This make sure that we don't loop indefinitely in here. */
791 for (i
= 0 ; i
< 10 ; i
++)
792 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
803 memset (&new, 0, sizeof (new));
804 /* Get the current settings, and see if they're what we asked for. */
805 tcgetattr (fd
, &new);
806 /* We cannot use memcmp on the whole structure here because under
807 * aix386 the termios structure has some reserved field that may
810 if ( new.c_iflag
== settings
->main
.c_iflag
811 && new.c_oflag
== settings
->main
.c_oflag
812 && new.c_cflag
== settings
->main
.c_cflag
813 && new.c_lflag
== settings
->main
.c_lflag
814 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
821 /* We have survived the tempest. */
828 static int old_fcntl_owner
[MAXDESC
];
829 #endif /* F_SETOWN */
831 /* This may also be defined in stdio,
832 but if so, this does no harm,
833 and using the same name avoids wasting the other one's space. */
836 unsigned char _sobuf
[BUFSIZ
+8];
841 /* Initialize the terminal mode on all tty devices that are currently
845 init_all_sys_modes (void)
847 struct tty_display_info
*tty
;
848 for (tty
= tty_list
; tty
; tty
= tty
->next
)
849 init_sys_modes (tty
);
852 /* Initialize the terminal mode on the given tty device. */
855 init_sys_modes (struct tty_display_info
*tty_out
)
857 struct emacs_tty tty
;
859 Vtty_erase_char
= Qnil
;
864 if (!tty_out
->output
)
865 return; /* The tty is suspended. */
867 if (! tty_out
->old_tty
)
868 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
870 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
872 tty
= *tty_out
->old_tty
;
874 #if !defined (DOS_NT)
875 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
877 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
878 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
879 #ifdef INLCR /* I'm just being cautious,
880 since I can't check how widespread INLCR is--rms. */
881 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
884 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
886 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
887 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
889 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
891 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
892 if (tty_out
->flow_control
)
894 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
896 tty
.main
.c_iflag
&= ~IXANY
;
900 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
901 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
903 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
905 if (tty_out
->meta_key
)
907 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
908 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
911 if (tty_out
->input
== stdin
)
913 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
914 /* Set up C-g for both SIGQUIT and SIGINT.
915 We don't know which we will get, but we handle both alike
916 so which one it really gives us does not matter. */
917 tty
.main
.c_cc
[VQUIT
] = quit_char
;
921 /* We normally don't get interrupt or quit signals from tty
922 devices other than our controlling terminal; therefore,
923 we must handle C-g as normal input. Unfortunately, this
924 means that the interrupt and quit feature must be
925 disabled on secondary ttys, or we would not even see the
928 Note that even though emacsclient could have special code
929 to pass SIGINT to Emacs, we should _not_ enable
930 interrupt/quit keys for emacsclient frames. This means
931 that we can't break out of loops in C code from a
932 secondary tty frame, but we can always decide what
933 display the C-g came from, which is more important from a
934 usability point of view. (Consider the case when two
935 people work together using the same Emacs instance.) */
936 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
937 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
939 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
940 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
942 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
947 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
950 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
952 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
953 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
956 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
959 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
960 #endif /* VREPRINT */
962 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
965 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
966 #endif /* VDISCARD */
968 if (tty_out
->flow_control
)
971 tty
.main
.c_cc
[VSTART
] = '\021';
974 tty
.main
.c_cc
[VSTOP
] = '\023';
980 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
983 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
988 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
989 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
990 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
991 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
992 if (tty_out
->flow_control
)
995 tty
.main
.c_cc
[VSTART
] = '\021';
998 tty
.main
.c_cc
[VSTOP
] = '\023';
1001 /* Also, PTY overloads NUL and BREAK.
1002 don't ignore break, but don't signal either, so it looks like NUL.
1003 This really serves a purpose only if running in an XTERM window
1004 or via TELNET or the like, but does no harm elsewhere. */
1005 tty
.main
.c_iflag
&= ~IGNBRK
;
1006 tty
.main
.c_iflag
&= ~BRKINT
;
1008 #endif /* not DOS_NT */
1010 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1011 if (!tty_out
->term_initted
)
1012 internal_terminal_init ();
1013 dos_ttraw (tty_out
);
1016 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1018 /* This code added to insure that, if flow-control is not to be used,
1019 we have an unlocked terminal at the start. */
1022 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1025 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1028 #if !defined (DOS_NT)
1030 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1035 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1036 if (interrupt_input
)
1038 old_fcntl_owner
[fileno (tty_out
->input
)] =
1039 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1040 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1041 init_sigio (fileno (tty_out
->input
));
1043 if (gpm_tty
== tty_out
)
1045 /* Arrange for mouse events to give us SIGIO signals. */
1046 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1047 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1048 init_sigio (gpm_fd
);
1050 #endif /* HAVE_GPM */
1052 #endif /* F_GETOWN */
1053 #endif /* F_SETFL */
1056 /* This symbol is defined on recent USG systems.
1057 Someone says without this call USG won't really buffer the file
1058 even with a call to setbuf. */
1059 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1061 setbuf (tty_out
->output
, (char *) _sobuf
);
1064 if (tty_out
->terminal
->set_terminal_modes_hook
)
1065 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1067 if (!tty_out
->term_initted
)
1069 Lisp_Object tail
, frame
;
1070 FOR_EACH_FRAME (tail
, frame
)
1072 /* XXX This needs to be revised. */
1073 if (FRAME_TERMCAP_P (XFRAME (frame
))
1074 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1075 init_frame_faces (XFRAME (frame
));
1079 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1081 /* We used to call "direct_output_forward_char(0)" here,
1082 but it's not clear why, since it may not do anything anyway. */
1086 Lisp_Object tail
, frame
;
1088 FOR_EACH_FRAME (tail
, frame
)
1090 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1091 || FRAME_MSDOS_P (XFRAME (frame
)))
1092 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1093 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1097 tty_out
->term_initted
= 1;
1100 /* Return nonzero if safe to use tabs in output.
1101 At the time this is called, init_sys_modes has not been done yet. */
1104 tabs_safe_p (int fd
)
1106 struct emacs_tty etty
;
1108 emacs_get_tty (fd
, &etty
);
1111 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1112 #else /* not TABDLY */
1114 #endif /* not TABDLY */
1120 /* Get terminal size from system.
1121 Store number of lines into *HEIGHTP and width into *WIDTHP.
1122 We store 0 if there's no valid information. */
1125 get_tty_size (int fd
, int *widthp
, int *heightp
)
1131 struct winsize size
;
1133 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1134 *widthp
= *heightp
= 0;
1137 *widthp
= size
.ws_col
;
1138 *heightp
= size
.ws_row
;
1144 /* SunOS - style. */
1145 struct ttysize size
;
1147 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1148 *widthp
= *heightp
= 0;
1151 *widthp
= size
.ts_cols
;
1152 *heightp
= size
.ts_lines
;
1157 *widthp
= ScreenCols ();
1158 *heightp
= ScreenRows ();
1159 #else /* system doesn't know size */
1163 #endif /* not SunOS-style */
1164 #endif /* not BSD-style */
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 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1531 sys_sigunblock (sigset_t new_mask
)
1534 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1539 sys_sigsetmask (sigset_t new_mask
)
1542 sigprocmask (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 relinguish 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 * Build a full Emacs-sized word out of whatever we've got.
1776 * This suffices even for a 64-bit architecture with a 15-bit rand.
1781 long val
= random ();
1782 #if VALBITS > RAND_BITS
1783 val
= (val
<< RAND_BITS
) ^ random ();
1784 #if VALBITS > 2*RAND_BITS
1785 val
= (val
<< RAND_BITS
) ^ random ();
1786 #if VALBITS > 3*RAND_BITS
1787 val
= (val
<< RAND_BITS
) ^ random ();
1788 #if VALBITS > 4*RAND_BITS
1789 val
= (val
<< RAND_BITS
) ^ random ();
1790 #endif /* need at least 5 */
1791 #endif /* need at least 4 */
1792 #endif /* need at least 3 */
1793 #endif /* need at least 2 */
1794 return val
& ((1L << VALBITS
) - 1);
1797 #ifndef HAVE_STRERROR
1803 extern char *sys_errlist
[];
1804 extern int sys_nerr
;
1806 if (errnum
>= 0 && errnum
< sys_nerr
)
1807 return sys_errlist
[errnum
];
1808 return (char *) "Unknown error";
1810 #endif /* not WINDOWSNT */
1811 #endif /* ! HAVE_STRERROR */
1814 emacs_open (const char *path
, int oflag
, int mode
)
1816 register int rtnval
;
1818 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1819 && (errno
== EINTR
))
1825 emacs_close (int fd
)
1828 register int rtnval
;
1830 while ((rtnval
= close (fd
)) == -1
1831 && (errno
== EINTR
))
1834 /* If close is interrupted SunOS 4.1 may or may not have closed the
1835 file descriptor. If it did the second close will fail with
1836 errno = EBADF. That means we have succeeded. */
1837 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1843 /* Maximum number of bytes to read or write in a single system call.
1844 This works around a serious bug in Linux kernels before 2.6.16; see
1845 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1846 It's likely to work around similar bugs in other operating systems, so do it
1847 on all platforms. Round INT_MAX down to a page size, with the conservative
1848 assumption that page sizes are at most 2**18 bytes (any kernel with a
1849 page size larger than that shouldn't have the bug). */
1850 #ifndef MAX_RW_COUNT
1851 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1854 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1855 Return the number of bytes read, which might be less than NBYTE.
1856 On error, set errno and return -1. */
1858 emacs_read (int fildes
, char *buf
, EMACS_INT nbyte
)
1860 register ssize_t rtnval
;
1862 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1863 passes a size that large to emacs_read. */
1865 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1866 && (errno
== EINTR
))
1871 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1872 or if a partial write occurs. Return the number of bytes written, setting
1873 errno if this is less than NBYTE. */
1875 emacs_write (int fildes
, const char *buf
, EMACS_INT nbyte
)
1878 EMACS_INT bytes_written
;
1884 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1891 /* I originally used `QUIT' but that might causes files to
1892 be truncated if you hit C-g in the middle of it. --Stef */
1893 process_pending_signals ();
1903 bytes_written
+= rtnval
;
1906 return (bytes_written
);
1909 static struct allocator
const emacs_norealloc_allocator
=
1910 { xmalloc
, NULL
, xfree
, memory_full
};
1912 /* Get the symbolic link value of FILENAME. Return a pointer to a
1913 NUL-terminated string. If readlink fails, return NULL and set
1914 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1915 Otherwise, allocate memory and return a pointer to that memory. If
1916 memory allocation fails, diagnose and fail without returning. If
1917 successful, store the length of the symbolic link into *LINKLEN. */
1919 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1921 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1922 &emacs_norealloc_allocator
, careadlinkatcwd
);
1927 * All of the following are for USG.
1929 * On USG systems the system calls are INTERRUPTIBLE by signals
1930 * that the user program has elected to catch. Thus the system call
1931 * must be retried in these cases. To handle this without massive
1932 * changes in the source code, we remap the standard system call names
1933 * to names for our own functions in sysdep.c that do the system call
1934 * with retries. Actually, for portability reasons, it is good
1935 * programming practice, as this example shows, to limit all actual
1936 * system calls to a single occurrence in the source. Sure, this
1937 * adds an extra level of function call overhead but it is almost
1938 * always negligible. Fred Fish, Unisoft Systems Inc.
1942 * Warning, this function may not duplicate 4.2 action properly
1943 * under error conditions.
1949 /* In 4.1, param.h fails to define this. */
1950 #define MAXPATHLEN 1024
1954 getwd (char *pathname
)
1956 char *npath
, *spath
;
1957 extern char *getcwd (char *, size_t);
1959 BLOCK_INPUT
; /* getcwd uses malloc */
1960 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1966 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1967 up to first slash. Should be harmless on other systems. */
1968 while (*npath
&& *npath
!= '/')
1970 strcpy (pathname
, npath
);
1971 free (spath
); /* getcwd uses malloc */
1976 #endif /* HAVE_GETWD */
1979 * Emulate rename using unlink/link. Note that this is
1980 * only partially correct. Also, doesn't enforce restriction
1981 * that files be of same type (regular->regular, dir->dir, etc).
1987 rename (const char *from
, const char *to
)
1989 if (access (from
, 0) == 0)
1992 if (link (from
, to
) == 0)
1993 if (unlink (from
) == 0)
2002 #if defined(HPUX) && !defined(HAVE_PERROR)
2004 /* HPUX curses library references perror, but as far as we know
2005 it won't be called. Anyway this definition will do for now. */
2011 #endif /* HPUX and not HAVE_PERROR */
2016 * Emulate BSD dup2. First close newd if it already exists.
2017 * Then, attempt to dup oldd. If not successful, call dup2 recursively
2018 * until we are, then close the unsuccessful ones.
2022 dup2 (int oldd
, int newd
)
2024 register int fd
, ret
;
2029 return fcntl (oldd
, F_DUPFD
, newd
);
2036 ret
= dup2 (old
,new);
2042 #endif /* not HAVE_DUP2 */
2045 * Gettimeofday. Simulate as much as possible. Only accurate
2046 * to nearest second. Emacs doesn't use tzp so ignore it for now.
2047 * Only needed when subprocesses are defined.
2050 #ifndef HAVE_GETTIMEOFDAY
2054 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2056 extern long time (long);
2058 tp
->tv_sec
= time ((long *)0);
2061 tzp
->tz_minuteswest
= -1;
2066 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2069 * This function will go away as soon as all the stubs fixed. (fnf)
2073 croak (char *badfunc
)
2075 printf ("%s not yet implemented\r\n", badfunc
);
2076 reset_all_sys_modes ();
2082 /* Directory routines for systems that don't have them. */
2084 #ifdef HAVE_DIRENT_H
2088 #if !defined (HAVE_CLOSEDIR)
2091 closedir (DIR *dirp
/* stream from opendir */)
2095 rtnval
= emacs_close (dirp
->dd_fd
);
2096 xfree ((char *) dirp
);
2100 #endif /* not HAVE_CLOSEDIR */
2101 #endif /* HAVE_DIRENT_H */
2105 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2108 struct timeval tv
[2];
2111 return utimes (filename
, tv
);
2112 #else /* not HAVE_UTIMES */
2114 utb
.actime
= EMACS_SECS (atime
);
2115 utb
.modtime
= EMACS_SECS (mtime
);
2116 return utime (filename
, &utb
);
2117 #endif /* not HAVE_UTIMES */
2120 /* mkdir and rmdir functions, for systems which don't have them. */
2124 * Written by Robert Rother, Mariah Corporation, August 1985.
2126 * If you want it, it's yours. All I ask in return is that if you
2127 * figure out how to do this in a Bourne Shell script you send me
2129 * sdcsvax!rmr or rmr@uscd
2131 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2132 * subroutine. 11Mar86; hoptoad!gnu
2134 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2135 * subroutine didn't return EEXIST. It does now.
2142 mkdir (char *dpath
, int dmode
)
2144 int cpid
, status
, fd
;
2145 struct stat statbuf
;
2147 if (stat (dpath
, &statbuf
) == 0)
2149 errno
= EEXIST
; /* Stat worked, so it already exists */
2153 /* If stat fails for a reason other than non-existence, return error */
2154 if (errno
!= ENOENT
)
2157 synch_process_alive
= 1;
2158 switch (cpid
= fork ())
2161 case -1: /* Error in fork */
2162 return (-1); /* Errno is set already */
2164 case 0: /* Child process */
2166 * Cheap hack to set mode of new directory. Since this
2167 * child process is going away anyway, we zap its umask.
2168 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2169 * directory. Does anybody care?
2171 status
= umask (0); /* Get current umask */
2172 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2173 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2180 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2181 _exit (-1); /* Can't exec /bin/mkdir */
2183 default: /* Parent process */
2184 wait_for_termination (cpid
);
2187 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2188 || synch_process_termsig
!= 0)
2190 errno
= EIO
; /* We don't know why, but */
2191 return -1; /* /bin/mkdir failed */
2196 #endif /* not HAVE_MKDIR */
2202 int cpid
, status
, fd
;
2203 struct stat statbuf
;
2205 if (stat (dpath
, &statbuf
) != 0)
2207 /* Stat just set errno. We don't have to */
2211 synch_process_alive
= 1;
2212 switch (cpid
= fork ())
2215 case -1: /* Error in fork */
2216 return (-1); /* Errno is set already */
2218 case 0: /* Child process */
2219 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2226 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2227 _exit (-1); /* Can't exec /bin/rmdir */
2229 default: /* Parent process */
2230 wait_for_termination (cpid
);
2233 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2234 || synch_process_termsig
!= 0)
2236 errno
= EIO
; /* We don't know why, but */
2237 return -1; /* /bin/rmdir failed */
2242 #endif /* !HAVE_RMDIR */
2247 memset (void *b
, int n
, size_t length
)
2249 unsigned char *p
= b
;
2250 while (length
-- > 0)
2254 #endif /* !HAVE_MEMSET */
2258 memcpy (void *b1
, void *b2
, size_t length
)
2260 unsigned char *p1
= b1
, *p2
= b2
;
2261 while (length
-- > 0)
2265 #endif /* !HAVE_MEMCPY */
2267 #ifndef HAVE_MEMMOVE
2269 memmove (void *b1
, void *b2
, size_t length
)
2271 unsigned char *p1
= b1
, *p2
= b2
;
2272 if (p1
< p2
|| p1
>= p2
+ length
)
2273 while (length
-- > 0)
2279 while (length
-- > 0)
2284 #endif /* !HAVE_MEMCPY */
2288 memcmp (void *b1
, void *b2
, size_t length
)
2290 unsigned char *p1
= b1
, *p2
= b2
;
2291 while (length
-- > 0)
2293 return p1
[-1] < p2
[-1] ? -1 : 1;
2296 #endif /* !HAVE_MEMCMP */
2298 #ifndef HAVE_STRSIGNAL
2300 strsignal (int code
)
2304 if (0 <= code
&& code
< NSIG
)
2306 /* Cast to suppress warning if the table has const char *. */
2307 signame
= (char *) sys_siglist
[code
];
2312 #endif /* HAVE_STRSIGNAL */
2315 /* For make-serial-process */
2317 serial_open (char *port
)
2321 fd
= emacs_open ((char*) port
,
2334 error ("Could not open %s: %s",
2335 port
, emacs_strerror (errno
));
2338 ioctl (fd
, TIOCEXCL
, (char *) 0);
2344 #if !defined (HAVE_CFMAKERAW)
2345 /* Workaround for targets which are missing cfmakeraw. */
2346 /* Pasted from man page. */
2348 cfmakeraw (struct termios
*termios_p
)
2350 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2351 termios_p
->c_oflag
&= ~OPOST
;
2352 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2353 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2354 termios_p
->c_cflag
|= CS8
;
2356 #endif /* !defined (HAVE_CFMAKERAW */
2358 #if !defined (HAVE_CFSETSPEED)
2359 /* Workaround for targets which are missing cfsetspeed. */
2361 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2363 return (cfsetispeed (termios_p
, vitesse
)
2364 + cfsetospeed (termios_p
, vitesse
));
2368 /* For serial-process-configure */
2370 serial_configure (struct Lisp_Process
*p
,
2371 Lisp_Object contact
)
2373 Lisp_Object childp2
= Qnil
;
2374 Lisp_Object tem
= Qnil
;
2375 struct termios attr
;
2377 char summary
[4] = "???"; /* This usually becomes "8N1". */
2379 childp2
= Fcopy_sequence (p
->childp
);
2381 /* Read port attributes and prepare default configuration. */
2382 err
= tcgetattr (p
->outfd
, &attr
);
2384 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2386 #if defined (CLOCAL)
2387 attr
.c_cflag
|= CLOCAL
;
2390 attr
.c_cflag
|= CREAD
;
2393 /* Configure speed. */
2394 if (!NILP (Fplist_member (contact
, QCspeed
)))
2395 tem
= Fplist_get (contact
, QCspeed
);
2397 tem
= Fplist_get (p
->childp
, QCspeed
);
2399 err
= cfsetspeed (&attr
, XINT (tem
));
2401 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2402 emacs_strerror (errno
));
2403 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2405 /* Configure bytesize. */
2406 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2407 tem
= Fplist_get (contact
, QCbytesize
);
2409 tem
= Fplist_get (p
->childp
, QCbytesize
);
2411 tem
= make_number (8);
2413 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2414 error (":bytesize must be nil (8), 7, or 8");
2415 summary
[0] = XINT (tem
) + '0';
2416 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2417 attr
.c_cflag
&= ~CSIZE
;
2418 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2420 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2421 if (XINT (tem
) != 8)
2422 error ("Bytesize cannot be changed");
2424 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2426 /* Configure parity. */
2427 if (!NILP (Fplist_member (contact
, QCparity
)))
2428 tem
= Fplist_get (contact
, QCparity
);
2430 tem
= Fplist_get (p
->childp
, QCparity
);
2431 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2432 error (":parity must be nil (no parity), `even', or `odd'");
2433 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2434 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2435 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2440 else if (EQ (tem
, Qeven
))
2443 attr
.c_cflag
|= PARENB
;
2444 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2446 else if (EQ (tem
, Qodd
))
2449 attr
.c_cflag
|= (PARENB
| PARODD
);
2450 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2453 /* Don't error on no parity, which should be set by cfmakeraw. */
2455 error ("Parity cannot be configured");
2457 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2459 /* Configure stopbits. */
2460 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2461 tem
= Fplist_get (contact
, QCstopbits
);
2463 tem
= Fplist_get (p
->childp
, QCstopbits
);
2465 tem
= make_number (1);
2467 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2468 error (":stopbits must be nil (1 stopbit), 1, or 2");
2469 summary
[2] = XINT (tem
) + '0';
2470 #if defined (CSTOPB)
2471 attr
.c_cflag
&= ~CSTOPB
;
2472 if (XINT (tem
) == 2)
2473 attr
.c_cflag
|= CSTOPB
;
2475 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2476 if (XINT (tem
) != 1)
2477 error ("Stopbits cannot be configured");
2479 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2481 /* Configure flowcontrol. */
2482 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2483 tem
= Fplist_get (contact
, QCflowcontrol
);
2485 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2486 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2487 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2488 #if defined (CRTSCTS)
2489 attr
.c_cflag
&= ~CRTSCTS
;
2491 #if defined (CNEW_RTSCTS)
2492 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2494 #if defined (IXON) && defined (IXOFF)
2495 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2499 /* Already configured. */
2501 else if (EQ (tem
, Qhw
))
2503 #if defined (CRTSCTS)
2504 attr
.c_cflag
|= CRTSCTS
;
2505 #elif defined (CNEW_RTSCTS)
2506 attr
.c_cflag
|= CNEW_RTSCTS
;
2508 error ("Hardware flowcontrol (RTS/CTS) not supported");
2511 else if (EQ (tem
, Qsw
))
2513 #if defined (IXON) && defined (IXOFF)
2514 attr
.c_iflag
|= (IXON
| IXOFF
);
2516 error ("Software flowcontrol (XON/XOFF) not supported");
2519 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2521 /* Activate configuration. */
2522 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2524 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2526 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2527 p
->childp
= childp2
;
2530 #endif /* not DOS_NT */
2532 /* System depended enumeration of and access to system processes a-la ps(1). */
2536 /* Process enumeration and access via /proc. */
2539 list_system_processes (void)
2541 Lisp_Object procdir
, match
, proclist
, next
;
2542 struct gcpro gcpro1
, gcpro2
;
2543 register Lisp_Object tail
;
2545 GCPRO2 (procdir
, match
);
2546 /* For every process on the system, there's a directory in the
2547 "/proc" pseudo-directory whose name is the numeric ID of that
2549 procdir
= build_string ("/proc");
2550 match
= build_string ("[0-9]+");
2551 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2553 /* `proclist' gives process IDs as strings. Destructively convert
2554 each string into a number. */
2555 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2558 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2562 /* directory_files_internal returns the files in reverse order; undo
2564 proclist
= Fnreverse (proclist
);
2568 /* The WINDOWSNT implementation is in w32.c.
2569 The MSDOS implementation is in dosfns.c. */
2570 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2573 list_system_processes (void)
2578 #endif /* !defined (WINDOWSNT) */
2582 time_from_jiffies (unsigned long long tval
, long hz
,
2583 time_t *sec
, unsigned *usec
)
2585 unsigned long long ullsec
;
2589 tval
-= ullsec
* hz
;
2590 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2592 *usec
= tval
* 1000000 / hz
;
2594 *usec
= tval
/ (hz
/ 1000000);
2598 ltime_from_jiffies (unsigned long long tval
, long hz
)
2603 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2605 return list3 (make_number ((sec
>> 16) & 0xffff),
2606 make_number (sec
& 0xffff),
2607 make_number (usec
));
2611 get_up_time (time_t *sec
, unsigned *usec
)
2618 fup
= fopen ("/proc/uptime", "r");
2622 double uptime
, idletime
;
2624 /* The numbers in /proc/uptime use C-locale decimal point, but
2625 we already set ourselves to the C locale (see `fixup_locale'
2627 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2630 *usec
= (uptime
- *sec
) * 1000000;
2637 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2638 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2641 procfs_ttyname (int rdev
)
2644 char name
[PATH_MAX
];
2647 fdev
= fopen ("/proc/tty/drivers", "r");
2652 unsigned long minor_beg
, minor_end
;
2653 char minor
[25]; /* 2 32-bit numbers + dash */
2656 while (!feof (fdev
) && !ferror (fdev
))
2658 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2659 && major
== MAJOR (rdev
))
2661 minor_beg
= strtoul (minor
, &endp
, 0);
2663 minor_end
= minor_beg
;
2664 else if (*endp
== '-')
2665 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2669 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2671 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2679 return build_string (name
);
2682 static unsigned long
2683 procfs_get_total_memory (void)
2686 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2689 fmem
= fopen ("/proc/meminfo", "r");
2693 unsigned long entry_value
;
2694 char entry_name
[20]; /* the longest I saw is 13+1 */
2696 while (!feof (fmem
) && !ferror (fmem
))
2698 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2699 && strcmp (entry_name
, "MemTotal:") == 0)
2701 retval
= entry_value
;
2712 system_process_attributes (Lisp_Object pid
)
2714 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2718 long clocks_per_sec
;
2720 char procbuf
[1025], *p
, *q
;
2723 const char *cmd
= NULL
;
2724 char *cmdline
= NULL
;
2725 size_t cmdsize
= 0, cmdline_size
;
2727 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2728 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2729 long priority
, niceness
, rss
;
2730 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2733 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2735 Lisp_Object attrs
= Qnil
;
2736 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2737 struct gcpro gcpro1
, gcpro2
;
2738 EMACS_INT uid_eint
, gid_eint
;
2740 CHECK_NUMBER_OR_FLOAT (pid
);
2741 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2742 sprintf (procfn
, "/proc/%u", proc_id
);
2743 if (stat (procfn
, &st
) < 0)
2746 GCPRO2 (attrs
, decoded_cmd
);
2750 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2752 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2754 pw
= getpwuid (uid
);
2757 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2761 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2763 gr
= getgrgid (gid
);
2766 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2768 strcpy (fn
, procfn
);
2769 procfn_end
= fn
+ strlen (fn
);
2770 strcpy (procfn_end
, "/stat");
2771 fd
= emacs_open (fn
, O_RDONLY
, 0);
2772 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2774 procbuf
[nread
] = '\0';
2777 p
= strchr (p
, '(');
2780 q
= strrchr (p
+ 1, ')');
2795 /* Command name is encoded in locale-coding-system; decode it. */
2796 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2797 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2798 Vlocale_coding_system
, 0);
2799 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2803 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2805 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2806 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2807 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2808 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2809 &u_time
, &s_time
, &cutime
, &cstime
,
2810 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2815 state_str
[1] = '\0';
2816 tem
= build_string (state_str
);
2817 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2819 /* Stops GCC whining about limited range of data type. */
2824 thcount_eint
= thcount
;
2825 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2826 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2827 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2828 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2829 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2830 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2831 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2832 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2833 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2834 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2835 if (clocks_per_sec
< 0)
2836 clocks_per_sec
= 100;
2837 attrs
= Fcons (Fcons (Qutime
,
2838 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2840 attrs
= Fcons (Fcons (Qstime
,
2841 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2843 attrs
= Fcons (Fcons (Qtime
,
2844 ltime_from_jiffies (s_time
+ u_time
,
2847 attrs
= Fcons (Fcons (Qcutime
,
2848 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2850 attrs
= Fcons (Fcons (Qcstime
,
2851 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2853 attrs
= Fcons (Fcons (Qctime
,
2854 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2856 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2857 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2858 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2859 EMACS_GET_TIME (tnow
);
2860 get_up_time (&sec
, &usec
);
2861 EMACS_SET_SECS (telapsed
, sec
);
2862 EMACS_SET_USECS (telapsed
, usec
);
2863 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2864 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2865 EMACS_SET_SECS (tstart
, sec
);
2866 EMACS_SET_USECS (tstart
, usec
);
2867 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2868 attrs
= Fcons (Fcons (Qstart
,
2870 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2872 (EMACS_SECS (tstart
) & 0xffff),
2874 (EMACS_USECS (tstart
)))),
2876 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2877 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2878 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2879 attrs
= Fcons (Fcons (Qetime
,
2881 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2883 (EMACS_SECS (telapsed
) & 0xffff),
2885 (EMACS_USECS (telapsed
)))),
2887 time_from_jiffies (u_time
+ s_time
, clocks_per_sec
, &sec
, &usec
);
2888 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2891 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2892 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2895 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2902 strcpy (procfn_end
, "/cmdline");
2903 fd
= emacs_open (fn
, O_RDONLY
, 0);
2907 for (cmdline_size
= 0; emacs_read (fd
, &ch
, 1) == 1; cmdline_size
++)
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
- 1; p
> cmdline
&& !*p
; 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
;
2999 int proc_id
, uid
, gid
;
3000 Lisp_Object attrs
= Qnil
;
3001 Lisp_Object decoded_cmd
, tem
;
3002 struct gcpro gcpro1
, gcpro2
;
3003 EMACS_INT uid_eint
, gid_eint
;
3005 CHECK_NUMBER_OR_FLOAT (pid
);
3006 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
3007 sprintf (procfn
, "/proc/%u", proc_id
);
3008 if (stat (procfn
, &st
) < 0)
3011 GCPRO2 (attrs
, decoded_cmd
);
3015 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
3017 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
3019 pw
= getpwuid (uid
);
3022 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3026 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
3028 gr
= getgrgid (gid
);
3031 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3033 strcpy (fn
, procfn
);
3034 procfn_end
= fn
+ strlen (fn
);
3035 strcpy (procfn_end
, "/psinfo");
3036 fd
= emacs_open (fn
, O_RDONLY
, 0);
3038 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3040 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3041 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3042 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3046 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3047 state_str
[1] = '\0';
3048 tem
= build_string (state_str
);
3049 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3052 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3053 need to get a string from it. */
3055 /* FIXME: missing: Qtpgid */
3067 Are they available? */
3069 attrs
= Fcons (Fcons (Qtime
,
3070 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3071 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3072 make_number (pinfo
.pr_time
.tv_nsec
))),
3075 attrs
= Fcons (Fcons (Qctime
,
3076 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3077 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3078 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3081 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3082 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3083 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3085 attrs
= Fcons (Fcons (Qstart
,
3086 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3087 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3088 make_number (pinfo
.pr_start
.tv_nsec
))),
3090 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3091 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3093 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3094 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3095 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3098 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3099 strlen (pinfo
.pr_fname
)),
3100 Vlocale_coding_system
, 0);
3101 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3103 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3104 strlen (pinfo
.pr_psargs
)),
3105 Vlocale_coding_system
, 0);
3106 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3116 /* The WINDOWSNT implementation is in w32.c.
3117 The MSDOS implementation is in dosfns.c. */
3118 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3121 system_process_attributes (Lisp_Object pid
)
3126 #endif /* !defined (WINDOWSNT) */