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
;
301 wait_for_termination_1 (int pid
, int interruptible
)
305 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined(__GNU__)
306 /* Note that kill returns -1 even if the process is just a zombie now.
307 But inevitably a SIGCHLD interrupt should be generated
308 and child_sig will do wait3 and make the process go away. */
309 /* There is some indication that there is a bug involved with
310 termination of subprocesses, perhaps involving a kernel bug too,
311 but no idea what it is. Just as a hunch we signal SIGCHLD to see
312 if that causes the problem to go away or get worse. */
313 sigsetmask (sigmask (SIGCHLD
));
314 if (0 > kill (pid
, 0))
316 sigsetmask (SIGEMPTYMASK
);
317 kill (getpid (), SIGCHLD
);
323 sigpause (SIGEMPTYMASK
);
324 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
328 #else /* not WINDOWSNT */
329 sigblock (sigmask (SIGCHLD
));
331 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
333 sigunblock (sigmask (SIGCHLD
));
337 sigsuspend (&empty_mask
);
338 #endif /* not WINDOWSNT */
339 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
345 /* Wait for subprocess with process id `pid' to terminate and
346 make sure it will get eliminated (not remain forever as a zombie) */
349 wait_for_termination (int pid
)
351 wait_for_termination_1 (pid
, 0);
354 /* Like the above, but allow keyboard interruption. */
356 interruptible_wait_for_termination (int pid
)
358 wait_for_termination_1 (pid
, 1);
362 * flush any pending output
363 * (may flush input as well; it does not matter the way we use it)
367 flush_pending_output (int channel
)
369 /* FIXME: maybe this function should be removed */
372 /* Set up the terminal at the other end of a pseudo-terminal that
373 we will be controlling an inferior through.
374 It should not echo or do line-editing, since that is done
375 in Emacs. No padding needed for insertion into an Emacs buffer. */
378 child_setup_tty (int out
)
383 emacs_get_tty (out
, &s
);
384 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
385 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
387 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
388 Some versions of GNU Hurd do not have FFDLY? */
390 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
391 /* No output delays */
393 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
394 /* No output delays */
397 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
398 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
400 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
403 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
406 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
408 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
409 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
410 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
411 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
414 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
417 #ifdef SIGNALS_VIA_CHARACTERS
418 /* the QUIT and INTR character are used in process_send_signal
419 so set them here to something useful. */
420 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
421 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
422 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
423 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
424 #endif /* not SIGNALS_VIA_CHARACTERS */
427 /* Also, PTY overloads NUL and BREAK.
428 don't ignore break, but don't signal either, so it looks like NUL. */
429 s
.main
.c_iflag
&= ~IGNBRK
;
430 s
.main
.c_iflag
&= ~BRKINT
;
431 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
432 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
433 would force it to 0377. That looks like duplicated code. */
434 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
437 /* We originally enabled ICANON (and set VEOF to 04), and then had
438 proces.c send additional EOF chars to flush the output when faced
439 with long lines, but this leads to weird effects when the
440 subprocess has disabled ICANON and ends up seeing those spurious
441 extra EOFs. So we don't send EOFs any more in
442 process.c:send_process. First we tried to disable ICANON by
443 default, so if a subsprocess sets up ICANON, it's his problem (or
444 the Elisp package that talks to it) to deal with lines that are
445 too long. But this disables some features, such as the ability
446 to send EOF signals. So we re-enabled ICANON but there is no
447 more "send eof to flush" going on (which is wrong and unportable
448 in itself). The correct way to handle too much output is to
449 buffer what could not be written and then write it again when
450 select returns ok for writing. This has it own set of
451 problems. Write is now asynchronous, is that a problem? How much
452 do we buffer, and what do we do when that limit is reached? */
454 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
455 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
456 #if 0 /* These settings only apply to non-ICANON mode. */
457 s
.main
.c_cc
[VMIN
] = 1;
458 s
.main
.c_cc
[VTIME
] = 0;
461 emacs_set_tty (out
, &s
, 0);
462 #endif /* not WINDOWSNT */
464 #endif /* not MSDOS */
467 /* Record a signal code and the handler for it. */
471 void (*handler
) (int);
474 static void save_signal_handlers (struct save_signal
*);
475 static void restore_signal_handlers (struct save_signal
*);
477 /* Suspend the Emacs process; give terminal to its superior. */
482 #if defined (SIGTSTP) && !defined (MSDOS)
485 int pgrp
= EMACS_GETPGRP (0);
486 EMACS_KILLPG (pgrp
, SIGTSTP
);
489 #else /* No SIGTSTP */
490 /* On a system where suspending is not implemented,
491 instead fork a subshell and let it talk directly to the terminal
495 #endif /* no SIGTSTP */
498 /* Fork a subshell. */
503 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
505 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
508 struct save_signal saved_handlers
[5];
510 unsigned char *volatile str_volatile
= 0;
514 saved_handlers
[0].code
= SIGINT
;
515 saved_handlers
[1].code
= SIGQUIT
;
516 saved_handlers
[2].code
= SIGTERM
;
518 saved_handlers
[3].code
= SIGIO
;
519 saved_handlers
[4].code
= 0;
521 saved_handlers
[3].code
= 0;
524 /* Mentioning current_buffer->buffer would mean including buffer.h,
525 which somehow wedges the hp compiler. So instead... */
527 dir
= intern ("default-directory");
528 if (NILP (Fboundp (dir
)))
530 dir
= Fsymbol_value (dir
);
534 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
535 str_volatile
= str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
537 memcpy (str
, SDATA (dir
), len
);
538 if (str
[len
- 1] != '/') str
[len
++] = '/';
544 save_signal_handlers (saved_handlers
);
545 synch_process_alive
= 1;
549 error ("Can't spawn subshell");
556 #ifdef DOS_NT /* MW, Aug 1993 */
559 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
562 sh
= (char *) egetenv ("SHELL");
566 /* Use our buffer's default directory for the subshell. */
568 if (str
&& chdir ((char *) str
) != 0)
571 ignore_value (write (1, "Can't chdir\n", 12));
576 close_process_descs (); /* Close Emacs's pipes/ptys */
578 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
580 char *epwd
= getenv ("PWD");
581 char old_pwd
[MAXPATHLEN
+1+4];
583 /* If PWD is set, pass it with corrected value. */
586 strcpy (old_pwd
, epwd
);
587 if (str
[len
- 1] == '/')
589 setenv ("PWD", str
, 1);
592 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
594 putenv (old_pwd
); /* restore previous value */
596 #else /* not MSDOS */
598 /* Waits for process completion */
599 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
600 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
602 write (1, "Can't execute subshell", 22);
603 #else /* not WINDOWSNT */
604 execlp (sh
, sh
, (char *) 0);
605 ignore_value (write (1, "Can't execute subshell", 22));
607 #endif /* not WINDOWSNT */
608 #endif /* not MSDOS */
611 /* Do this now if we did not do it before. */
613 save_signal_handlers (saved_handlers
);
614 synch_process_alive
= 1;
618 wait_for_termination (pid
);
620 restore_signal_handlers (saved_handlers
);
621 synch_process_alive
= 0;
625 save_signal_handlers (struct save_signal
*saved_handlers
)
627 while (saved_handlers
->code
)
629 saved_handlers
->handler
630 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
636 restore_signal_handlers (struct save_signal
*saved_handlers
)
638 while (saved_handlers
->code
)
640 signal (saved_handlers
->code
, saved_handlers
->handler
);
646 /* If SIGIO is broken, don't do anything. */
663 unrequest_sigio (void)
670 static int old_fcntl_flags
[MAXDESC
];
676 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
677 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
679 interrupts_deferred
= 0;
686 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
690 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
691 /* XXX Uhm, FASYNC is not used anymore here. */
692 /* XXX Yeah, but you need it for SIGIO, don't you? */
701 sigunblock (sigmask (SIGWINCH
));
703 sigunblock (sigmask (SIGIO
));
705 interrupts_deferred
= 0;
709 unrequest_sigio (void)
714 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
720 sigblock (sigmask (SIGWINCH
));
722 sigblock (sigmask (SIGIO
));
723 interrupts_deferred
= 1;
726 #else /* no FASYNC */
732 if (noninteractive
|| read_socket_hook
)
735 croak ("request_sigio");
739 unrequest_sigio (void)
741 if (noninteractive
|| read_socket_hook
)
744 croak ("unrequest_sigio");
753 /* Getting and setting emacs_tty structures. */
755 /* Set *TC to the parameters associated with the terminal FD.
756 Return zero if all's well, or -1 if we ran into an error we
757 couldn't deal with. */
759 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
761 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
763 /* We have those nifty POSIX tcmumbleattr functions. */
764 memset (&settings
->main
, 0, sizeof (settings
->main
));
765 if (tcgetattr (fd
, &settings
->main
) < 0)
769 /* We have survived the tempest. */
774 /* Set the parameters of the tty on FD according to the contents of
775 *SETTINGS. If FLUSHP is non-zero, we discard input.
776 Return 0 if all went well, and -1 if anything failed. */
779 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
781 /* Set the primary parameters - baud rate, character size, etcetera. */
784 /* We have those nifty POSIX tcmumbleattr functions.
785 William J. Smith <wjs@wiis.wang.com> writes:
786 "POSIX 1003.1 defines tcsetattr to return success if it was
787 able to perform any of the requested actions, even if some
788 of the requested actions could not be performed.
789 We must read settings back to ensure tty setup properly.
790 AIX requires this to keep tty from hanging occasionally." */
791 /* This make sure that we don't loop indefinitely in here. */
792 for (i
= 0 ; i
< 10 ; i
++)
793 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
804 memset (&new, 0, sizeof (new));
805 /* Get the current settings, and see if they're what we asked for. */
806 tcgetattr (fd
, &new);
807 /* We cannot use memcmp on the whole structure here because under
808 * aix386 the termios structure has some reserved field that may
811 if ( new.c_iflag
== settings
->main
.c_iflag
812 && new.c_oflag
== settings
->main
.c_oflag
813 && new.c_cflag
== settings
->main
.c_cflag
814 && new.c_lflag
== settings
->main
.c_lflag
815 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
822 /* We have survived the tempest. */
829 static int old_fcntl_owner
[MAXDESC
];
830 #endif /* F_SETOWN */
832 /* This may also be defined in stdio,
833 but if so, this does no harm,
834 and using the same name avoids wasting the other one's space. */
837 unsigned char _sobuf
[BUFSIZ
+8];
842 /* Initialize the terminal mode on all tty devices that are currently
846 init_all_sys_modes (void)
848 struct tty_display_info
*tty
;
849 for (tty
= tty_list
; tty
; tty
= tty
->next
)
850 init_sys_modes (tty
);
853 /* Initialize the terminal mode on the given tty device. */
856 init_sys_modes (struct tty_display_info
*tty_out
)
858 struct emacs_tty tty
;
860 Vtty_erase_char
= Qnil
;
865 if (!tty_out
->output
)
866 return; /* The tty is suspended. */
868 if (! tty_out
->old_tty
)
869 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
871 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
873 tty
= *tty_out
->old_tty
;
875 #if !defined (DOS_NT)
876 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
878 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
879 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
880 #ifdef INLCR /* I'm just being cautious,
881 since I can't check how widespread INLCR is--rms. */
882 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
885 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
887 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
888 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
890 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
892 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
893 if (tty_out
->flow_control
)
895 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
897 tty
.main
.c_iflag
&= ~IXANY
;
901 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
902 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
904 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
906 if (tty_out
->meta_key
)
908 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
909 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
912 if (tty_out
->input
== stdin
)
914 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
915 /* Set up C-g for both SIGQUIT and SIGINT.
916 We don't know which we will get, but we handle both alike
917 so which one it really gives us does not matter. */
918 tty
.main
.c_cc
[VQUIT
] = quit_char
;
922 /* We normally don't get interrupt or quit signals from tty
923 devices other than our controlling terminal; therefore,
924 we must handle C-g as normal input. Unfortunately, this
925 means that the interrupt and quit feature must be
926 disabled on secondary ttys, or we would not even see the
929 Note that even though emacsclient could have special code
930 to pass SIGINT to Emacs, we should _not_ enable
931 interrupt/quit keys for emacsclient frames. This means
932 that we can't break out of loops in C code from a
933 secondary tty frame, but we can always decide what
934 display the C-g came from, which is more important from a
935 usability point of view. (Consider the case when two
936 people work together using the same Emacs instance.) */
937 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
938 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
940 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
941 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
943 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
948 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
951 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
953 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
954 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
957 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
960 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
961 #endif /* VREPRINT */
963 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
966 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
967 #endif /* VDISCARD */
969 if (tty_out
->flow_control
)
972 tty
.main
.c_cc
[VSTART
] = '\021';
975 tty
.main
.c_cc
[VSTOP
] = '\023';
981 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
984 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
989 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
990 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
991 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
992 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
993 if (tty_out
->flow_control
)
996 tty
.main
.c_cc
[VSTART
] = '\021';
999 tty
.main
.c_cc
[VSTOP
] = '\023';
1002 /* Also, PTY overloads NUL and BREAK.
1003 don't ignore break, but don't signal either, so it looks like NUL.
1004 This really serves a purpose only if running in an XTERM window
1005 or via TELNET or the like, but does no harm elsewhere. */
1006 tty
.main
.c_iflag
&= ~IGNBRK
;
1007 tty
.main
.c_iflag
&= ~BRKINT
;
1009 #endif /* not DOS_NT */
1011 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1012 if (!tty_out
->term_initted
)
1013 internal_terminal_init ();
1014 dos_ttraw (tty_out
);
1017 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1019 /* This code added to insure that, if flow-control is not to be used,
1020 we have an unlocked terminal at the start. */
1023 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1026 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1029 #if !defined (DOS_NT)
1031 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1036 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1037 if (interrupt_input
)
1039 old_fcntl_owner
[fileno (tty_out
->input
)] =
1040 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1041 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1042 init_sigio (fileno (tty_out
->input
));
1044 if (gpm_tty
== tty_out
)
1046 /* Arrange for mouse events to give us SIGIO signals. */
1047 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1048 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1049 init_sigio (gpm_fd
);
1051 #endif /* HAVE_GPM */
1053 #endif /* F_GETOWN */
1054 #endif /* F_SETFL */
1057 /* This symbol is defined on recent USG systems.
1058 Someone says without this call USG won't really buffer the file
1059 even with a call to setbuf. */
1060 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1062 setbuf (tty_out
->output
, (char *) _sobuf
);
1065 if (tty_out
->terminal
->set_terminal_modes_hook
)
1066 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1068 if (!tty_out
->term_initted
)
1070 Lisp_Object tail
, frame
;
1071 FOR_EACH_FRAME (tail
, frame
)
1073 /* XXX This needs to be revised. */
1074 if (FRAME_TERMCAP_P (XFRAME (frame
))
1075 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1076 init_frame_faces (XFRAME (frame
));
1080 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1082 /* We used to call "direct_output_forward_char(0)" here,
1083 but it's not clear why, since it may not do anything anyway. */
1087 Lisp_Object tail
, frame
;
1089 FOR_EACH_FRAME (tail
, frame
)
1091 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1092 || FRAME_MSDOS_P (XFRAME (frame
)))
1093 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1094 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1098 tty_out
->term_initted
= 1;
1101 /* Return nonzero if safe to use tabs in output.
1102 At the time this is called, init_sys_modes has not been done yet. */
1105 tabs_safe_p (int fd
)
1107 struct emacs_tty etty
;
1109 emacs_get_tty (fd
, &etty
);
1112 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1113 #else /* not TABDLY */
1115 #endif /* not TABDLY */
1121 /* Get terminal size from system.
1122 Store number of lines into *HEIGHTP and width into *WIDTHP.
1123 We store 0 if there's no valid information. */
1126 get_tty_size (int fd
, int *widthp
, int *heightp
)
1128 #if defined TIOCGWINSZ
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
;
1141 #elif defined TIOCGSIZE
1143 /* SunOS - style. */
1144 struct ttysize size
;
1146 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1147 *widthp
= *heightp
= 0;
1150 *widthp
= size
.ts_cols
;
1151 *heightp
= size
.ts_lines
;
1154 #elif defined WINDOWSNT
1156 CONSOLE_SCREEN_BUFFER_INFO info
;
1157 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1159 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1160 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1163 *widthp
= *heightp
= 0;
1167 *widthp
= ScreenCols ();
1168 *heightp
= ScreenRows ();
1170 #else /* system doesn't know size */
1178 /* Set the logical window size associated with descriptor FD
1179 to HEIGHT and WIDTH. This is used mainly with ptys. */
1182 set_window_size (int fd
, int height
, int width
)
1187 struct winsize size
;
1188 size
.ws_row
= height
;
1189 size
.ws_col
= width
;
1191 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1192 return 0; /* error */
1199 /* SunOS - style. */
1200 struct ttysize size
;
1201 size
.ts_lines
= height
;
1202 size
.ts_cols
= width
;
1204 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1210 #endif /* not SunOS-style */
1211 #endif /* not BSD-style */
1216 /* Prepare all terminal devices for exiting Emacs. */
1219 reset_all_sys_modes (void)
1221 struct tty_display_info
*tty
;
1222 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1223 reset_sys_modes (tty
);
1226 /* Prepare the terminal for closing it; move the cursor to the
1227 bottom of the frame, turn off interrupt-driven I/O, etc. */
1230 reset_sys_modes (struct tty_display_info
*tty_out
)
1237 if (!tty_out
->term_initted
)
1240 if (!tty_out
->output
)
1241 return; /* The tty is suspended. */
1243 /* Go to and clear the last line of the terminal. */
1245 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1247 /* Code adapted from tty_clear_end_of_line. */
1248 if (tty_out
->TS_clr_line
)
1250 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1253 { /* have to do it the hard way */
1255 tty_turn_off_insert (tty_out
);
1257 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1259 fputc (' ', tty_out
->output
);
1263 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1264 fflush (tty_out
->output
);
1266 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1267 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1270 /* Avoid possible loss of output when changing terminal modes. */
1271 fsync (fileno (tty_out
->output
));
1275 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1276 if (interrupt_input
)
1278 reset_sigio (fileno (tty_out
->input
));
1279 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1280 old_fcntl_owner
[fileno (tty_out
->input
)]);
1282 #endif /* F_SETOWN */
1284 fcntl (fileno (tty_out
->input
), F_SETFL
,
1285 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1287 #endif /* F_SETFL */
1289 if (tty_out
->old_tty
)
1290 while (emacs_set_tty (fileno (tty_out
->input
),
1291 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1294 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1302 /* Set up the proper status flags for use of a pty. */
1307 /* I'm told that TOICREMOTE does not mean control chars
1308 "can't be sent" but rather that they don't have
1309 input-editing or signaling effects.
1310 That should be good, because we have other ways
1311 to do those things in Emacs.
1312 However, telnet mode seems not to work on 4.2.
1313 So TIOCREMOTE is turned off now. */
1315 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1316 will hang. In particular, the "timeout" feature (which
1317 causes a read to return if there is no data available)
1318 does this. Also it is known that telnet mode will hang
1319 in such a way that Emacs must be stopped (perhaps this
1320 is the same problem).
1322 If TIOCREMOTE is turned off, then there is a bug in
1323 hp-ux which sometimes loses data. Apparently the
1324 code which blocks the master process when the internal
1325 buffer fills up does not work. Other than this,
1326 though, everything else seems to work fine.
1328 Since the latter lossage is more benign, we may as well
1329 lose that way. -- cph */
1331 #if defined(UNIX98_PTYS)
1334 ioctl (fd
, FIONBIO
, &on
);
1339 #endif /* HAVE_PTYS */
1342 #include <sys/socket.h>
1344 #endif /* HAVE_SOCKETS */
1347 #ifndef HAVE_H_ERRNO
1350 #endif /* TRY_AGAIN */
1353 init_system_name (void)
1355 #ifndef HAVE_GETHOSTNAME
1358 Vsystem_name
= build_string (uts
.nodename
);
1359 #else /* HAVE_GETHOSTNAME */
1360 unsigned int hostname_size
= 256;
1361 char *hostname
= (char *) alloca (hostname_size
);
1363 /* Try to get the host name; if the buffer is too short, try
1364 again. Apparently, the only indication gethostname gives of
1365 whether the buffer was large enough is the presence or absence
1366 of a '\0' in the string. Eech. */
1369 gethostname (hostname
, hostname_size
- 1);
1370 hostname
[hostname_size
- 1] = '\0';
1372 /* Was the buffer large enough for the '\0'? */
1373 if (strlen (hostname
) < hostname_size
- 1)
1376 hostname_size
<<= 1;
1377 hostname
= (char *) alloca (hostname_size
);
1380 /* Turn the hostname into the official, fully-qualified hostname.
1381 Don't do this if we're going to dump; this can confuse system
1382 libraries on some machines and make the dumped emacs core dump. */
1385 #endif /* not CANNOT_DUMP */
1386 if (! strchr (hostname
, '.'))
1389 #ifdef HAVE_GETADDRINFO
1390 struct addrinfo
*res
;
1391 struct addrinfo hints
;
1394 memset (&hints
, 0, sizeof (hints
));
1395 hints
.ai_socktype
= SOCK_STREAM
;
1396 hints
.ai_flags
= AI_CANONNAME
;
1398 for (count
= 0;; count
++)
1400 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1401 || ret
!= EAI_AGAIN
)
1406 Fsleep_for (make_number (1), Qnil
);
1411 struct addrinfo
*it
= res
;
1414 char *fqdn
= it
->ai_canonname
;
1415 if (fqdn
&& strchr (fqdn
, '.')
1416 && strcmp (fqdn
, "localhost.localdomain") != 0)
1422 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1423 strcpy (hostname
, it
->ai_canonname
);
1427 #else /* !HAVE_GETADDRINFO */
1429 for (count
= 0;; count
++)
1435 hp
= gethostbyname (hostname
);
1437 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1444 Fsleep_for (make_number (1), Qnil
);
1449 char *fqdn
= (char *) hp
->h_name
;
1451 if (!strchr (fqdn
, '.'))
1453 /* We still don't have a fully qualified domain name.
1454 Try to find one in the list of alternate names */
1455 char **alias
= hp
->h_aliases
;
1457 && (!strchr (*alias
, '.')
1458 || !strcmp (*alias
, "localhost.localdomain")))
1465 #endif /* !HAVE_GETADDRINFO */
1467 #endif /* HAVE_SOCKETS */
1468 Vsystem_name
= build_string (hostname
);
1469 #endif /* HAVE_GETHOSTNAME */
1472 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1473 if (*p
== ' ' || *p
== '\t')
1478 /* POSIX signals support - DJB */
1479 /* Anyone with POSIX signals should have ANSI C declarations */
1481 sigset_t empty_mask
;
1486 sys_signal (int signal_number
, signal_handler_t action
)
1488 struct sigaction new_action
, old_action
;
1489 sigemptyset (&new_action
.sa_mask
);
1490 new_action
.sa_handler
= action
;
1491 new_action
.sa_flags
= 0;
1492 #if defined (SA_RESTART)
1493 /* Emacs mostly works better with restartable system services. If this
1494 flag exists, we probably want to turn it on here.
1495 However, on some systems this resets the timeout of `select'
1496 which means that `select' never finishes if it keeps getting signals.
1497 BROKEN_SA_RESTART is defined on those systems. */
1498 /* It's not clear why the comment above says "mostly works better". --Stef
1499 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1500 for pending input so we need long-running syscalls to be interrupted
1501 after a signal that sets the interrupt_input_pending flag. */
1502 /* Non-interactive keyboard input goes through stdio, where we always
1503 want restartable system calls. */
1504 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1507 new_action
.sa_flags
= SA_RESTART
;
1509 sigaction (signal_number
, &new_action
, &old_action
);
1510 return (old_action
.sa_handler
);
1513 #endif /* WINDOWSNT */
1516 /* If we're compiling with GCC, we don't need this function, since it
1517 can be written as a macro. */
1519 sys_sigmask (int sig
)
1522 sigemptyset (&mask
);
1523 sigaddset (&mask
, sig
);
1528 /* I'd like to have these guys return pointers to the mask storage in here,
1529 but there'd be trouble if the code was saving multiple masks. I'll be
1530 safe and pass the structure. It normally won't be more than 2 bytes
1534 sys_sigblock (sigset_t new_mask
)
1537 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1542 sys_sigunblock (sigset_t new_mask
)
1545 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1550 sys_sigsetmask (sigset_t new_mask
)
1553 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1558 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1559 static char *my_sys_siglist
[NSIG
];
1563 # define sys_siglist my_sys_siglist
1569 sigemptyset (&empty_mask
);
1571 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1575 sys_siglist
[SIGABRT
] = "Aborted";
1578 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1581 sys_siglist
[SIGALRM
] = "Alarm clock";
1584 sys_siglist
[SIGBUS
] = "Bus error";
1587 sys_siglist
[SIGCLD
] = "Child status changed";
1590 sys_siglist
[SIGCHLD
] = "Child status changed";
1593 sys_siglist
[SIGCONT
] = "Continued";
1596 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1599 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1602 sys_siglist
[SIGEMT
] = "Emulation trap";
1605 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1608 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1611 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1614 sys_siglist
[SIGHUP
] = "Hangup";
1617 sys_siglist
[SIGILL
] = "Illegal instruction";
1620 sys_siglist
[SIGINT
] = "Interrupt";
1623 sys_siglist
[SIGIO
] = "I/O possible";
1626 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1629 sys_siglist
[SIGIOT
] = "IOT trap";
1632 sys_siglist
[SIGKILL
] = "Killed";
1635 sys_siglist
[SIGLOST
] = "Resource lost";
1638 sys_siglist
[SIGLWP
] = "SIGLWP";
1641 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1644 sys_siglist
[SIGWIND
] = "SIGPHONE";
1647 sys_siglist
[SIGPIPE
] = "Broken pipe";
1650 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1653 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1656 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1659 sys_siglist
[SIGPWR
] = "Power-fail restart";
1662 sys_siglist
[SIGQUIT
] = "Quit";
1665 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1668 sys_siglist
[SIGSAK
] = "Secure attention";
1671 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1674 sys_siglist
[SIGSOUND
] = "Sound completed";
1677 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1680 sys_siglist
[SIGSTP
] = "Stopped (user)";
1683 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1686 sys_siglist
[SIGTERM
] = "Terminated";
1689 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1692 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1695 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1698 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1701 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1704 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1707 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1710 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1713 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1716 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1719 sys_siglist
[SIGWINCH
] = "Window size changed";
1722 sys_siglist
[SIGWIND
] = "SIGWIND";
1725 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1728 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1731 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1740 /* Figure out how many bits the system's random number generator uses.
1741 `random' and `lrand48' are assumed to return 31 usable bits.
1742 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1743 so we'll shift it and treat it like the 15-bit USG `rand'. */
1747 # define RAND_BITS 31
1748 # else /* !HAVE_RANDOM */
1749 # ifdef HAVE_LRAND48
1750 # define RAND_BITS 31
1751 # define random lrand48
1752 # else /* !HAVE_LRAND48 */
1753 # define RAND_BITS 15
1754 # if RAND_MAX == 32767
1755 # define random rand
1756 # else /* RAND_MAX != 32767 */
1757 # if RAND_MAX == 2147483647
1758 # define random() (rand () >> 16)
1759 # else /* RAND_MAX != 2147483647 */
1761 # define random rand
1763 # define random() (rand () >> 16)
1765 # endif /* RAND_MAX != 2147483647 */
1766 # endif /* RAND_MAX != 32767 */
1767 # endif /* !HAVE_LRAND48 */
1768 # endif /* !HAVE_RANDOM */
1769 #endif /* !RAND_BITS */
1772 seed_random (long int arg
)
1775 srandom ((unsigned int)arg
);
1777 # ifdef HAVE_LRAND48
1780 srand ((unsigned int)arg
);
1786 * Build a full Emacs-sized word out of whatever we've got.
1787 * This suffices even for a 64-bit architecture with a 15-bit rand.
1792 long val
= random ();
1793 #if VALBITS > RAND_BITS
1794 val
= (val
<< RAND_BITS
) ^ random ();
1795 #if VALBITS > 2*RAND_BITS
1796 val
= (val
<< RAND_BITS
) ^ random ();
1797 #if VALBITS > 3*RAND_BITS
1798 val
= (val
<< RAND_BITS
) ^ random ();
1799 #if VALBITS > 4*RAND_BITS
1800 val
= (val
<< RAND_BITS
) ^ random ();
1801 #endif /* need at least 5 */
1802 #endif /* need at least 4 */
1803 #endif /* need at least 3 */
1804 #endif /* need at least 2 */
1805 return val
& ((1L << VALBITS
) - 1);
1808 #ifndef HAVE_STRERROR
1814 extern char *sys_errlist
[];
1815 extern int sys_nerr
;
1817 if (errnum
>= 0 && errnum
< sys_nerr
)
1818 return sys_errlist
[errnum
];
1819 return (char *) "Unknown error";
1821 #endif /* not WINDOWSNT */
1822 #endif /* ! HAVE_STRERROR */
1825 emacs_open (const char *path
, int oflag
, int mode
)
1827 register int rtnval
;
1829 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1830 && (errno
== EINTR
))
1836 emacs_close (int fd
)
1839 register int rtnval
;
1841 while ((rtnval
= close (fd
)) == -1
1842 && (errno
== EINTR
))
1845 /* If close is interrupted SunOS 4.1 may or may not have closed the
1846 file descriptor. If it did the second close will fail with
1847 errno = EBADF. That means we have succeeded. */
1848 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1854 /* Maximum number of bytes to read or write in a single system call.
1855 This works around a serious bug in Linux kernels before 2.6.16; see
1856 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1857 It's likely to work around similar bugs in other operating systems, so do it
1858 on all platforms. Round INT_MAX down to a page size, with the conservative
1859 assumption that page sizes are at most 2**18 bytes (any kernel with a
1860 page size larger than that shouldn't have the bug). */
1861 #ifndef MAX_RW_COUNT
1862 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1865 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1866 Return the number of bytes read, which might be less than NBYTE.
1867 On error, set errno and return -1. */
1869 emacs_read (int fildes
, char *buf
, EMACS_INT nbyte
)
1871 register ssize_t rtnval
;
1873 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1874 passes a size that large to emacs_read. */
1876 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1877 && (errno
== EINTR
))
1882 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1883 or if a partial write occurs. Return the number of bytes written, setting
1884 errno if this is less than NBYTE. */
1886 emacs_write (int fildes
, const char *buf
, EMACS_INT nbyte
)
1889 EMACS_INT bytes_written
;
1895 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1902 /* I originally used `QUIT' but that might causes files to
1903 be truncated if you hit C-g in the middle of it. --Stef */
1904 process_pending_signals ();
1914 bytes_written
+= rtnval
;
1917 return (bytes_written
);
1920 static struct allocator
const emacs_norealloc_allocator
=
1921 { xmalloc
, NULL
, xfree
, memory_full
};
1923 /* Get the symbolic link value of FILENAME. Return a pointer to a
1924 NUL-terminated string. If readlink fails, return NULL and set
1925 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1926 Otherwise, allocate memory and return a pointer to that memory. If
1927 memory allocation fails, diagnose and fail without returning. If
1928 successful, store the length of the symbolic link into *LINKLEN. */
1930 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1932 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1933 &emacs_norealloc_allocator
, careadlinkatcwd
);
1938 * All of the following are for USG.
1940 * On USG systems the system calls are INTERRUPTIBLE by signals
1941 * that the user program has elected to catch. Thus the system call
1942 * must be retried in these cases. To handle this without massive
1943 * changes in the source code, we remap the standard system call names
1944 * to names for our own functions in sysdep.c that do the system call
1945 * with retries. Actually, for portability reasons, it is good
1946 * programming practice, as this example shows, to limit all actual
1947 * system calls to a single occurrence in the source. Sure, this
1948 * adds an extra level of function call overhead but it is almost
1949 * always negligible. Fred Fish, Unisoft Systems Inc.
1953 * Warning, this function may not duplicate 4.2 action properly
1954 * under error conditions.
1960 /* In 4.1, param.h fails to define this. */
1961 #define MAXPATHLEN 1024
1965 getwd (char *pathname
)
1967 char *npath
, *spath
;
1968 extern char *getcwd (char *, size_t);
1970 BLOCK_INPUT
; /* getcwd uses malloc */
1971 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1977 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1978 up to first slash. Should be harmless on other systems. */
1979 while (*npath
&& *npath
!= '/')
1981 strcpy (pathname
, npath
);
1982 free (spath
); /* getcwd uses malloc */
1987 #endif /* HAVE_GETWD */
1990 * Emulate rename using unlink/link. Note that this is
1991 * only partially correct. Also, doesn't enforce restriction
1992 * that files be of same type (regular->regular, dir->dir, etc).
1998 rename (const char *from
, const char *to
)
2000 if (access (from
, 0) == 0)
2003 if (link (from
, to
) == 0)
2004 if (unlink (from
) == 0)
2013 #if defined(HPUX) && !defined(HAVE_PERROR)
2015 /* HPUX curses library references perror, but as far as we know
2016 it won't be called. Anyway this definition will do for now. */
2022 #endif /* HPUX and not HAVE_PERROR */
2027 * Emulate BSD dup2. First close newd if it already exists.
2028 * Then, attempt to dup oldd. If not successful, call dup2 recursively
2029 * until we are, then close the unsuccessful ones.
2033 dup2 (int oldd
, int newd
)
2035 register int fd
, ret
;
2040 return fcntl (oldd
, F_DUPFD
, newd
);
2047 ret
= dup2 (old
,new);
2053 #endif /* not HAVE_DUP2 */
2056 * Gettimeofday. Simulate as much as possible. Only accurate
2057 * to nearest second. Emacs doesn't use tzp so ignore it for now.
2058 * Only needed when subprocesses are defined.
2061 #ifndef HAVE_GETTIMEOFDAY
2065 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2067 extern long time (long);
2069 tp
->tv_sec
= time ((long *)0);
2072 tzp
->tz_minuteswest
= -1;
2077 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2080 * This function will go away as soon as all the stubs fixed. (fnf)
2084 croak (char *badfunc
)
2086 printf ("%s not yet implemented\r\n", badfunc
);
2087 reset_all_sys_modes ();
2093 /* Directory routines for systems that don't have them. */
2095 #ifdef HAVE_DIRENT_H
2099 #if !defined (HAVE_CLOSEDIR)
2102 closedir (DIR *dirp
/* stream from opendir */)
2106 rtnval
= emacs_close (dirp
->dd_fd
);
2107 xfree ((char *) dirp
);
2111 #endif /* not HAVE_CLOSEDIR */
2112 #endif /* HAVE_DIRENT_H */
2116 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2119 struct timeval tv
[2];
2122 return utimes (filename
, tv
);
2123 #else /* not HAVE_UTIMES */
2125 utb
.actime
= EMACS_SECS (atime
);
2126 utb
.modtime
= EMACS_SECS (mtime
);
2127 return utime (filename
, &utb
);
2128 #endif /* not HAVE_UTIMES */
2131 /* mkdir and rmdir functions, for systems which don't have them. */
2135 * Written by Robert Rother, Mariah Corporation, August 1985.
2137 * If you want it, it's yours. All I ask in return is that if you
2138 * figure out how to do this in a Bourne Shell script you send me
2140 * sdcsvax!rmr or rmr@uscd
2142 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2143 * subroutine. 11Mar86; hoptoad!gnu
2145 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2146 * subroutine didn't return EEXIST. It does now.
2153 mkdir (char *dpath
, int dmode
)
2155 int cpid
, status
, fd
;
2156 struct stat statbuf
;
2158 if (stat (dpath
, &statbuf
) == 0)
2160 errno
= EEXIST
; /* Stat worked, so it already exists */
2164 /* If stat fails for a reason other than non-existence, return error */
2165 if (errno
!= ENOENT
)
2168 synch_process_alive
= 1;
2169 switch (cpid
= fork ())
2172 case -1: /* Error in fork */
2173 return (-1); /* Errno is set already */
2175 case 0: /* Child process */
2177 * Cheap hack to set mode of new directory. Since this
2178 * child process is going away anyway, we zap its umask.
2179 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2180 * directory. Does anybody care?
2182 status
= umask (0); /* Get current umask */
2183 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2184 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2191 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2192 _exit (-1); /* Can't exec /bin/mkdir */
2194 default: /* Parent process */
2195 wait_for_termination (cpid
);
2198 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2199 || synch_process_termsig
!= 0)
2201 errno
= EIO
; /* We don't know why, but */
2202 return -1; /* /bin/mkdir failed */
2207 #endif /* not HAVE_MKDIR */
2213 int cpid
, status
, fd
;
2214 struct stat statbuf
;
2216 if (stat (dpath
, &statbuf
) != 0)
2218 /* Stat just set errno. We don't have to */
2222 synch_process_alive
= 1;
2223 switch (cpid
= fork ())
2226 case -1: /* Error in fork */
2227 return (-1); /* Errno is set already */
2229 case 0: /* Child process */
2230 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2237 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2238 _exit (-1); /* Can't exec /bin/rmdir */
2240 default: /* Parent process */
2241 wait_for_termination (cpid
);
2244 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2245 || synch_process_termsig
!= 0)
2247 errno
= EIO
; /* We don't know why, but */
2248 return -1; /* /bin/rmdir failed */
2253 #endif /* !HAVE_RMDIR */
2258 memset (void *b
, int n
, size_t length
)
2260 unsigned char *p
= b
;
2261 while (length
-- > 0)
2265 #endif /* !HAVE_MEMSET */
2269 memcpy (void *b1
, void *b2
, size_t length
)
2271 unsigned char *p1
= b1
, *p2
= b2
;
2272 while (length
-- > 0)
2276 #endif /* !HAVE_MEMCPY */
2278 #ifndef HAVE_MEMMOVE
2280 memmove (void *b1
, void *b2
, size_t length
)
2282 unsigned char *p1
= b1
, *p2
= b2
;
2283 if (p1
< p2
|| p1
>= p2
+ length
)
2284 while (length
-- > 0)
2290 while (length
-- > 0)
2295 #endif /* !HAVE_MEMCPY */
2299 memcmp (void *b1
, void *b2
, size_t length
)
2301 unsigned char *p1
= b1
, *p2
= b2
;
2302 while (length
-- > 0)
2304 return p1
[-1] < p2
[-1] ? -1 : 1;
2307 #endif /* !HAVE_MEMCMP */
2309 #ifndef HAVE_STRSIGNAL
2311 strsignal (int code
)
2315 if (0 <= code
&& code
< NSIG
)
2317 /* Cast to suppress warning if the table has const char *. */
2318 signame
= (char *) sys_siglist
[code
];
2323 #endif /* HAVE_STRSIGNAL */
2326 /* For make-serial-process */
2328 serial_open (char *port
)
2332 fd
= emacs_open ((char*) port
,
2345 error ("Could not open %s: %s",
2346 port
, emacs_strerror (errno
));
2349 ioctl (fd
, TIOCEXCL
, (char *) 0);
2355 #if !defined (HAVE_CFMAKERAW)
2356 /* Workaround for targets which are missing cfmakeraw. */
2357 /* Pasted from man page. */
2359 cfmakeraw (struct termios
*termios_p
)
2361 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2362 termios_p
->c_oflag
&= ~OPOST
;
2363 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2364 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2365 termios_p
->c_cflag
|= CS8
;
2367 #endif /* !defined (HAVE_CFMAKERAW */
2369 #if !defined (HAVE_CFSETSPEED)
2370 /* Workaround for targets which are missing cfsetspeed. */
2372 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2374 return (cfsetispeed (termios_p
, vitesse
)
2375 + cfsetospeed (termios_p
, vitesse
));
2379 /* For serial-process-configure */
2381 serial_configure (struct Lisp_Process
*p
,
2382 Lisp_Object contact
)
2384 Lisp_Object childp2
= Qnil
;
2385 Lisp_Object tem
= Qnil
;
2386 struct termios attr
;
2388 char summary
[4] = "???"; /* This usually becomes "8N1". */
2390 childp2
= Fcopy_sequence (p
->childp
);
2392 /* Read port attributes and prepare default configuration. */
2393 err
= tcgetattr (p
->outfd
, &attr
);
2395 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2397 #if defined (CLOCAL)
2398 attr
.c_cflag
|= CLOCAL
;
2401 attr
.c_cflag
|= CREAD
;
2404 /* Configure speed. */
2405 if (!NILP (Fplist_member (contact
, QCspeed
)))
2406 tem
= Fplist_get (contact
, QCspeed
);
2408 tem
= Fplist_get (p
->childp
, QCspeed
);
2410 err
= cfsetspeed (&attr
, XINT (tem
));
2412 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2413 emacs_strerror (errno
));
2414 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2416 /* Configure bytesize. */
2417 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2418 tem
= Fplist_get (contact
, QCbytesize
);
2420 tem
= Fplist_get (p
->childp
, QCbytesize
);
2422 tem
= make_number (8);
2424 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2425 error (":bytesize must be nil (8), 7, or 8");
2426 summary
[0] = XINT (tem
) + '0';
2427 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2428 attr
.c_cflag
&= ~CSIZE
;
2429 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2431 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2432 if (XINT (tem
) != 8)
2433 error ("Bytesize cannot be changed");
2435 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2437 /* Configure parity. */
2438 if (!NILP (Fplist_member (contact
, QCparity
)))
2439 tem
= Fplist_get (contact
, QCparity
);
2441 tem
= Fplist_get (p
->childp
, QCparity
);
2442 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2443 error (":parity must be nil (no parity), `even', or `odd'");
2444 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2445 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2446 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2451 else if (EQ (tem
, Qeven
))
2454 attr
.c_cflag
|= PARENB
;
2455 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2457 else if (EQ (tem
, Qodd
))
2460 attr
.c_cflag
|= (PARENB
| PARODD
);
2461 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2464 /* Don't error on no parity, which should be set by cfmakeraw. */
2466 error ("Parity cannot be configured");
2468 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2470 /* Configure stopbits. */
2471 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2472 tem
= Fplist_get (contact
, QCstopbits
);
2474 tem
= Fplist_get (p
->childp
, QCstopbits
);
2476 tem
= make_number (1);
2478 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2479 error (":stopbits must be nil (1 stopbit), 1, or 2");
2480 summary
[2] = XINT (tem
) + '0';
2481 #if defined (CSTOPB)
2482 attr
.c_cflag
&= ~CSTOPB
;
2483 if (XINT (tem
) == 2)
2484 attr
.c_cflag
|= CSTOPB
;
2486 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2487 if (XINT (tem
) != 1)
2488 error ("Stopbits cannot be configured");
2490 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2492 /* Configure flowcontrol. */
2493 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2494 tem
= Fplist_get (contact
, QCflowcontrol
);
2496 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2497 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2498 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2499 #if defined (CRTSCTS)
2500 attr
.c_cflag
&= ~CRTSCTS
;
2502 #if defined (CNEW_RTSCTS)
2503 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2505 #if defined (IXON) && defined (IXOFF)
2506 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2510 /* Already configured. */
2512 else if (EQ (tem
, Qhw
))
2514 #if defined (CRTSCTS)
2515 attr
.c_cflag
|= CRTSCTS
;
2516 #elif defined (CNEW_RTSCTS)
2517 attr
.c_cflag
|= CNEW_RTSCTS
;
2519 error ("Hardware flowcontrol (RTS/CTS) not supported");
2522 else if (EQ (tem
, Qsw
))
2524 #if defined (IXON) && defined (IXOFF)
2525 attr
.c_iflag
|= (IXON
| IXOFF
);
2527 error ("Software flowcontrol (XON/XOFF) not supported");
2530 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2532 /* Activate configuration. */
2533 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2535 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2537 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2538 p
->childp
= childp2
;
2541 #endif /* not DOS_NT */
2543 /* System depended enumeration of and access to system processes a-la ps(1). */
2547 /* Process enumeration and access via /proc. */
2550 list_system_processes (void)
2552 Lisp_Object procdir
, match
, proclist
, next
;
2553 struct gcpro gcpro1
, gcpro2
;
2554 register Lisp_Object tail
;
2556 GCPRO2 (procdir
, match
);
2557 /* For every process on the system, there's a directory in the
2558 "/proc" pseudo-directory whose name is the numeric ID of that
2560 procdir
= build_string ("/proc");
2561 match
= build_string ("[0-9]+");
2562 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2564 /* `proclist' gives process IDs as strings. Destructively convert
2565 each string into a number. */
2566 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2569 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2573 /* directory_files_internal returns the files in reverse order; undo
2575 proclist
= Fnreverse (proclist
);
2579 /* The WINDOWSNT implementation is in w32.c.
2580 The MSDOS implementation is in dosfns.c. */
2581 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2584 list_system_processes (void)
2589 #endif /* !defined (WINDOWSNT) */
2593 time_from_jiffies (unsigned long long tval
, long hz
,
2594 time_t *sec
, unsigned *usec
)
2596 unsigned long long ullsec
;
2600 tval
-= ullsec
* hz
;
2601 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2603 *usec
= tval
* 1000000 / hz
;
2605 *usec
= tval
/ (hz
/ 1000000);
2609 ltime_from_jiffies (unsigned long long tval
, long hz
)
2614 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2616 return list3 (make_number ((sec
>> 16) & 0xffff),
2617 make_number (sec
& 0xffff),
2618 make_number (usec
));
2622 get_up_time (time_t *sec
, unsigned *usec
)
2629 fup
= fopen ("/proc/uptime", "r");
2633 double uptime
, idletime
;
2635 /* The numbers in /proc/uptime use C-locale decimal point, but
2636 we already set ourselves to the C locale (see `fixup_locale'
2638 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2641 *usec
= (uptime
- *sec
) * 1000000;
2648 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2649 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2652 procfs_ttyname (int rdev
)
2655 char name
[PATH_MAX
];
2658 fdev
= fopen ("/proc/tty/drivers", "r");
2663 unsigned long minor_beg
, minor_end
;
2664 char minor
[25]; /* 2 32-bit numbers + dash */
2667 while (!feof (fdev
) && !ferror (fdev
))
2669 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2670 && major
== MAJOR (rdev
))
2672 minor_beg
= strtoul (minor
, &endp
, 0);
2674 minor_end
= minor_beg
;
2675 else if (*endp
== '-')
2676 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2680 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2682 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2690 return build_string (name
);
2693 static unsigned long
2694 procfs_get_total_memory (void)
2697 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2700 fmem
= fopen ("/proc/meminfo", "r");
2704 unsigned long entry_value
;
2705 char entry_name
[20]; /* the longest I saw is 13+1 */
2707 while (!feof (fmem
) && !ferror (fmem
))
2709 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2710 && strcmp (entry_name
, "MemTotal:") == 0)
2712 retval
= entry_value
;
2723 system_process_attributes (Lisp_Object pid
)
2725 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2729 long clocks_per_sec
;
2731 char procbuf
[1025], *p
, *q
;
2734 const char *cmd
= NULL
;
2735 char *cmdline
= NULL
;
2736 size_t cmdsize
= 0, cmdline_size
;
2738 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2739 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2740 long priority
, niceness
, rss
;
2741 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2744 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2746 Lisp_Object attrs
= Qnil
;
2747 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2748 struct gcpro gcpro1
, gcpro2
;
2749 EMACS_INT uid_eint
, gid_eint
;
2751 CHECK_NUMBER_OR_FLOAT (pid
);
2752 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2753 sprintf (procfn
, "/proc/%u", proc_id
);
2754 if (stat (procfn
, &st
) < 0)
2757 GCPRO2 (attrs
, decoded_cmd
);
2761 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2763 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2765 pw
= getpwuid (uid
);
2768 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2772 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2774 gr
= getgrgid (gid
);
2777 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2779 strcpy (fn
, procfn
);
2780 procfn_end
= fn
+ strlen (fn
);
2781 strcpy (procfn_end
, "/stat");
2782 fd
= emacs_open (fn
, O_RDONLY
, 0);
2783 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2785 procbuf
[nread
] = '\0';
2788 p
= strchr (p
, '(');
2791 q
= strrchr (p
+ 1, ')');
2806 /* Command name is encoded in locale-coding-system; decode it. */
2807 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2808 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2809 Vlocale_coding_system
, 0);
2810 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2814 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2816 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2817 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2818 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2819 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2820 &u_time
, &s_time
, &cutime
, &cstime
,
2821 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2826 state_str
[1] = '\0';
2827 tem
= build_string (state_str
);
2828 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2830 /* Stops GCC whining about limited range of data type. */
2835 thcount_eint
= thcount
;
2836 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2837 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2838 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2839 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2840 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2841 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2842 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2843 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2844 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2845 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2846 if (clocks_per_sec
< 0)
2847 clocks_per_sec
= 100;
2848 attrs
= Fcons (Fcons (Qutime
,
2849 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2851 attrs
= Fcons (Fcons (Qstime
,
2852 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2854 attrs
= Fcons (Fcons (Qtime
,
2855 ltime_from_jiffies (s_time
+ u_time
,
2858 attrs
= Fcons (Fcons (Qcutime
,
2859 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2861 attrs
= Fcons (Fcons (Qcstime
,
2862 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2864 attrs
= Fcons (Fcons (Qctime
,
2865 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2867 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2868 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2869 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2870 EMACS_GET_TIME (tnow
);
2871 get_up_time (&sec
, &usec
);
2872 EMACS_SET_SECS (telapsed
, sec
);
2873 EMACS_SET_USECS (telapsed
, usec
);
2874 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2875 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2876 EMACS_SET_SECS (tstart
, sec
);
2877 EMACS_SET_USECS (tstart
, usec
);
2878 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2879 attrs
= Fcons (Fcons (Qstart
,
2881 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2883 (EMACS_SECS (tstart
) & 0xffff),
2885 (EMACS_USECS (tstart
)))),
2887 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2888 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2889 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2890 attrs
= Fcons (Fcons (Qetime
,
2892 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2894 (EMACS_SECS (telapsed
) & 0xffff),
2896 (EMACS_USECS (telapsed
)))),
2898 time_from_jiffies (u_time
+ s_time
, clocks_per_sec
, &sec
, &usec
);
2899 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2902 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2903 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2906 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2913 strcpy (procfn_end
, "/cmdline");
2914 fd
= emacs_open (fn
, O_RDONLY
, 0);
2918 for (cmdline_size
= 0; emacs_read (fd
, &ch
, 1) == 1; cmdline_size
++)
2921 if (isspace (c
) || c
== '\\')
2922 cmdline_size
++; /* for later quoting, see below */
2926 cmdline
= xmalloc (cmdline_size
+ 1);
2927 lseek (fd
, 0L, SEEK_SET
);
2929 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2930 cmdline
[nread
++] = '\0';
2933 /* Assigning zero to `nread' makes us skip the following
2934 two loops, assign zero to cmdline_size, and enter the
2935 following `if' clause that handles unknown command
2939 /* We don't want trailing null characters. */
2940 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2942 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2944 /* Escape-quote whitespace and backslashes. */
2945 if (isspace (*p
) || *p
== '\\')
2947 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2951 else if (*p
== '\0')
2954 cmdline_size
= nread
;
2961 cmdsize
= strlen (cmd
);
2962 cmdline_size
= cmdsize
+ 2;
2963 cmdline
= xmalloc (cmdline_size
+ 1);
2964 strcpy (cmdline
, "[");
2965 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2968 /* Command line is encoded in locale-coding-system; decode it. */
2969 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2970 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2971 Vlocale_coding_system
, 0);
2973 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2980 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2982 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2983 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2984 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2985 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2986 #undef _FILE_OFFSET_BITS
2988 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2993 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2994 #define _FILE_OFFSET_BITS 64
2995 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2997 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3000 system_process_attributes (Lisp_Object pid
)
3002 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3007 struct psinfo pinfo
;
3010 int proc_id
, uid
, gid
;
3011 Lisp_Object attrs
= Qnil
;
3012 Lisp_Object decoded_cmd
, tem
;
3013 struct gcpro gcpro1
, gcpro2
;
3014 EMACS_INT uid_eint
, gid_eint
;
3016 CHECK_NUMBER_OR_FLOAT (pid
);
3017 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
3018 sprintf (procfn
, "/proc/%u", proc_id
);
3019 if (stat (procfn
, &st
) < 0)
3022 GCPRO2 (attrs
, decoded_cmd
);
3026 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
3028 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
3030 pw
= getpwuid (uid
);
3033 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3037 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
3039 gr
= getgrgid (gid
);
3042 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3044 strcpy (fn
, procfn
);
3045 procfn_end
= fn
+ strlen (fn
);
3046 strcpy (procfn_end
, "/psinfo");
3047 fd
= emacs_open (fn
, O_RDONLY
, 0);
3049 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3051 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3052 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3053 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3057 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3058 state_str
[1] = '\0';
3059 tem
= build_string (state_str
);
3060 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3063 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3064 need to get a string from it. */
3066 /* FIXME: missing: Qtpgid */
3078 Are they available? */
3080 attrs
= Fcons (Fcons (Qtime
,
3081 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3082 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3083 make_number (pinfo
.pr_time
.tv_nsec
))),
3086 attrs
= Fcons (Fcons (Qctime
,
3087 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3088 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3089 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3092 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3093 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3094 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3096 attrs
= Fcons (Fcons (Qstart
,
3097 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3098 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3099 make_number (pinfo
.pr_start
.tv_nsec
))),
3101 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3102 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3104 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3105 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3106 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3109 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3110 strlen (pinfo
.pr_fname
)),
3111 Vlocale_coding_system
, 0);
3112 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3114 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3115 strlen (pinfo
.pr_psargs
)),
3116 Vlocale_coding_system
, 0);
3117 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3127 /* The WINDOWSNT implementation is in w32.c.
3128 The MSDOS implementation is in dosfns.c. */
3129 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3132 system_process_attributes (Lisp_Object pid
)
3137 #endif /* !defined (WINDOWSNT) */