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
)
307 #if (defined (BSD_SYSTEM) || defined (HPUX)) && !defined(__GNU__)
308 /* Note that kill returns -1 even if the process is just a zombie now.
309 But inevitably a SIGCHLD interrupt should be generated
310 and child_sig will do wait3 and make the process go away. */
311 /* There is some indication that there is a bug involved with
312 termination of subprocesses, perhaps involving a kernel bug too,
313 but no idea what it is. Just as a hunch we signal SIGCHLD to see
314 if that causes the problem to go away or get worse. */
315 sigsetmask (sigmask (SIGCHLD
));
316 if (0 > kill (pid
, 0))
318 sigsetmask (SIGEMPTYMASK
);
319 kill (getpid (), SIGCHLD
);
325 sigpause (SIGEMPTYMASK
);
326 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
330 #else /* not WINDOWSNT */
331 sigblock (sigmask (SIGCHLD
));
333 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
335 sigunblock (sigmask (SIGCHLD
));
339 sigsuspend (&empty_mask
);
340 #endif /* not WINDOWSNT */
341 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
346 * flush any pending output
347 * (may flush input as well; it does not matter the way we use it)
351 flush_pending_output (int channel
)
353 /* FIXME: maybe this function should be removed */
356 /* Set up the terminal at the other end of a pseudo-terminal that
357 we will be controlling an inferior through.
358 It should not echo or do line-editing, since that is done
359 in Emacs. No padding needed for insertion into an Emacs buffer. */
362 child_setup_tty (int out
)
367 emacs_get_tty (out
, &s
);
368 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
369 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
371 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
372 Some versions of GNU Hurd do not have FFDLY? */
374 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
375 /* No output delays */
377 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
378 /* No output delays */
381 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
382 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
384 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
387 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
390 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
392 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
393 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
394 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
395 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
398 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
401 #ifdef SIGNALS_VIA_CHARACTERS
402 /* the QUIT and INTR character are used in process_send_signal
403 so set them here to something useful. */
404 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
405 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
406 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
407 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
408 #endif /* not SIGNALS_VIA_CHARACTERS */
411 /* Also, PTY overloads NUL and BREAK.
412 don't ignore break, but don't signal either, so it looks like NUL. */
413 s
.main
.c_iflag
&= ~IGNBRK
;
414 s
.main
.c_iflag
&= ~BRKINT
;
415 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
416 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
417 would force it to 0377. That looks like duplicated code. */
418 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
421 /* We originally enabled ICANON (and set VEOF to 04), and then had
422 proces.c send additional EOF chars to flush the output when faced
423 with long lines, but this leads to weird effects when the
424 subprocess has disabled ICANON and ends up seeing those spurious
425 extra EOFs. So we don't send EOFs any more in
426 process.c:send_process. First we tried to disable ICANON by
427 default, so if a subsprocess sets up ICANON, it's his problem (or
428 the Elisp package that talks to it) to deal with lines that are
429 too long. But this disables some features, such as the ability
430 to send EOF signals. So we re-enabled ICANON but there is no
431 more "send eof to flush" going on (which is wrong and unportable
432 in itself). The correct way to handle too much output is to
433 buffer what could not be written and then write it again when
434 select returns ok for writing. This has it own set of
435 problems. Write is now asynchronous, is that a problem? How much
436 do we buffer, and what do we do when that limit is reached? */
438 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
439 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
440 #if 0 /* These settings only apply to non-ICANON mode. */
441 s
.main
.c_cc
[VMIN
] = 1;
442 s
.main
.c_cc
[VTIME
] = 0;
445 emacs_set_tty (out
, &s
, 0);
446 #endif /* not WINDOWSNT */
448 #endif /* not MSDOS */
451 /* Record a signal code and the handler for it. */
455 void (*handler
) (int);
458 static void save_signal_handlers (struct save_signal
*);
459 static void restore_signal_handlers (struct save_signal
*);
461 /* Suspend the Emacs process; give terminal to its superior. */
466 #if defined (SIGTSTP) && !defined (MSDOS)
469 int pgrp
= EMACS_GETPGRP (0);
470 EMACS_KILLPG (pgrp
, SIGTSTP
);
473 #else /* No SIGTSTP */
474 /* On a system where suspending is not implemented,
475 instead fork a subshell and let it talk directly to the terminal
479 #endif /* no SIGTSTP */
482 /* Fork a subshell. */
487 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
489 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
492 struct save_signal saved_handlers
[5];
494 unsigned char *volatile str_volatile
= 0;
498 saved_handlers
[0].code
= SIGINT
;
499 saved_handlers
[1].code
= SIGQUIT
;
500 saved_handlers
[2].code
= SIGTERM
;
502 saved_handlers
[3].code
= SIGIO
;
503 saved_handlers
[4].code
= 0;
505 saved_handlers
[3].code
= 0;
508 /* Mentioning current_buffer->buffer would mean including buffer.h,
509 which somehow wedges the hp compiler. So instead... */
511 dir
= intern ("default-directory");
512 if (NILP (Fboundp (dir
)))
514 dir
= Fsymbol_value (dir
);
518 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
519 str_volatile
= str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
521 memcpy (str
, SDATA (dir
), len
);
522 if (str
[len
- 1] != '/') str
[len
++] = '/';
528 save_signal_handlers (saved_handlers
);
529 synch_process_alive
= 1;
533 error ("Can't spawn subshell");
540 #ifdef DOS_NT /* MW, Aug 1993 */
543 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
546 sh
= (char *) egetenv ("SHELL");
550 /* Use our buffer's default directory for the subshell. */
552 if (str
&& chdir ((char *) str
) != 0)
555 ignore_value (write (1, "Can't chdir\n", 12));
560 close_process_descs (); /* Close Emacs's pipes/ptys */
562 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
564 char *epwd
= getenv ("PWD");
565 char old_pwd
[MAXPATHLEN
+1+4];
567 /* If PWD is set, pass it with corrected value. */
570 strcpy (old_pwd
, epwd
);
571 if (str
[len
- 1] == '/')
573 setenv ("PWD", str
, 1);
576 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
578 putenv (old_pwd
); /* restore previous value */
580 #else /* not MSDOS */
582 /* Waits for process completion */
583 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
584 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
586 write (1, "Can't execute subshell", 22);
587 #else /* not WINDOWSNT */
588 execlp (sh
, sh
, (char *) 0);
589 ignore_value (write (1, "Can't execute subshell", 22));
591 #endif /* not WINDOWSNT */
592 #endif /* not MSDOS */
595 /* Do this now if we did not do it before. */
597 save_signal_handlers (saved_handlers
);
598 synch_process_alive
= 1;
602 wait_for_termination (pid
);
604 restore_signal_handlers (saved_handlers
);
605 synch_process_alive
= 0;
609 save_signal_handlers (struct save_signal
*saved_handlers
)
611 while (saved_handlers
->code
)
613 saved_handlers
->handler
614 = (void (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
620 restore_signal_handlers (struct save_signal
*saved_handlers
)
622 while (saved_handlers
->code
)
624 signal (saved_handlers
->code
, saved_handlers
->handler
);
630 /* If SIGIO is broken, don't do anything. */
647 unrequest_sigio (void)
654 static int old_fcntl_flags
[MAXDESC
];
660 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
661 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
663 interrupts_deferred
= 0;
670 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
674 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
675 /* XXX Uhm, FASYNC is not used anymore here. */
676 /* XXX Yeah, but you need it for SIGIO, don't you? */
685 sigunblock (sigmask (SIGWINCH
));
687 sigunblock (sigmask (SIGIO
));
689 interrupts_deferred
= 0;
693 unrequest_sigio (void)
698 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
704 sigblock (sigmask (SIGWINCH
));
706 sigblock (sigmask (SIGIO
));
707 interrupts_deferred
= 1;
710 #else /* no FASYNC */
716 if (noninteractive
|| read_socket_hook
)
719 croak ("request_sigio");
723 unrequest_sigio (void)
725 if (noninteractive
|| read_socket_hook
)
728 croak ("unrequest_sigio");
737 /* Getting and setting emacs_tty structures. */
739 /* Set *TC to the parameters associated with the terminal FD.
740 Return zero if all's well, or -1 if we ran into an error we
741 couldn't deal with. */
743 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
745 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
747 /* We have those nifty POSIX tcmumbleattr functions. */
748 memset (&settings
->main
, 0, sizeof (settings
->main
));
749 if (tcgetattr (fd
, &settings
->main
) < 0)
753 /* We have survived the tempest. */
758 /* Set the parameters of the tty on FD according to the contents of
759 *SETTINGS. If FLUSHP is non-zero, we discard input.
760 Return 0 if all went well, and -1 if anything failed. */
763 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
765 /* Set the primary parameters - baud rate, character size, etcetera. */
768 /* We have those nifty POSIX tcmumbleattr functions.
769 William J. Smith <wjs@wiis.wang.com> writes:
770 "POSIX 1003.1 defines tcsetattr to return success if it was
771 able to perform any of the requested actions, even if some
772 of the requested actions could not be performed.
773 We must read settings back to ensure tty setup properly.
774 AIX requires this to keep tty from hanging occasionally." */
775 /* This make sure that we don't loop indefinitely in here. */
776 for (i
= 0 ; i
< 10 ; i
++)
777 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
788 memset (&new, 0, sizeof (new));
789 /* Get the current settings, and see if they're what we asked for. */
790 tcgetattr (fd
, &new);
791 /* We cannot use memcmp on the whole structure here because under
792 * aix386 the termios structure has some reserved field that may
795 if ( new.c_iflag
== settings
->main
.c_iflag
796 && new.c_oflag
== settings
->main
.c_oflag
797 && new.c_cflag
== settings
->main
.c_cflag
798 && new.c_lflag
== settings
->main
.c_lflag
799 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
806 /* We have survived the tempest. */
813 static int old_fcntl_owner
[MAXDESC
];
814 #endif /* F_SETOWN */
816 /* This may also be defined in stdio,
817 but if so, this does no harm,
818 and using the same name avoids wasting the other one's space. */
821 unsigned char _sobuf
[BUFSIZ
+8];
826 /* Initialize the terminal mode on all tty devices that are currently
830 init_all_sys_modes (void)
832 struct tty_display_info
*tty
;
833 for (tty
= tty_list
; tty
; tty
= tty
->next
)
834 init_sys_modes (tty
);
837 /* Initialize the terminal mode on the given tty device. */
840 init_sys_modes (struct tty_display_info
*tty_out
)
842 struct emacs_tty tty
;
844 Vtty_erase_char
= Qnil
;
849 if (!tty_out
->output
)
850 return; /* The tty is suspended. */
852 if (! tty_out
->old_tty
)
853 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
855 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
857 tty
= *tty_out
->old_tty
;
859 #if !defined (DOS_NT)
860 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
862 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
863 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
864 #ifdef INLCR /* I'm just being cautious,
865 since I can't check how widespread INLCR is--rms. */
866 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
869 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
871 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
872 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
874 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
876 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
877 if (tty_out
->flow_control
)
879 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
881 tty
.main
.c_iflag
&= ~IXANY
;
885 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
886 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
888 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
890 if (tty_out
->meta_key
)
892 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
893 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
896 if (tty_out
->input
== stdin
)
898 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
899 /* Set up C-g for both SIGQUIT and SIGINT.
900 We don't know which we will get, but we handle both alike
901 so which one it really gives us does not matter. */
902 tty
.main
.c_cc
[VQUIT
] = quit_char
;
906 /* We normally don't get interrupt or quit signals from tty
907 devices other than our controlling terminal; therefore,
908 we must handle C-g as normal input. Unfortunately, this
909 means that the interrupt and quit feature must be
910 disabled on secondary ttys, or we would not even see the
913 Note that even though emacsclient could have special code
914 to pass SIGINT to Emacs, we should _not_ enable
915 interrupt/quit keys for emacsclient frames. This means
916 that we can't break out of loops in C code from a
917 secondary tty frame, but we can always decide what
918 display the C-g came from, which is more important from a
919 usability point of view. (Consider the case when two
920 people work together using the same Emacs instance.) */
921 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
922 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
924 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
925 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
927 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
932 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
935 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
937 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
938 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
941 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
944 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
945 #endif /* VREPRINT */
947 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
950 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
951 #endif /* VDISCARD */
953 if (tty_out
->flow_control
)
956 tty
.main
.c_cc
[VSTART
] = '\021';
959 tty
.main
.c_cc
[VSTOP
] = '\023';
965 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
968 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
973 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
974 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
975 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
976 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
977 if (tty_out
->flow_control
)
980 tty
.main
.c_cc
[VSTART
] = '\021';
983 tty
.main
.c_cc
[VSTOP
] = '\023';
986 /* Also, PTY overloads NUL and BREAK.
987 don't ignore break, but don't signal either, so it looks like NUL.
988 This really serves a purpose only if running in an XTERM window
989 or via TELNET or the like, but does no harm elsewhere. */
990 tty
.main
.c_iflag
&= ~IGNBRK
;
991 tty
.main
.c_iflag
&= ~BRKINT
;
993 #endif /* not DOS_NT */
995 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
996 if (!tty_out
->term_initted
)
997 internal_terminal_init ();
1001 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1003 /* This code added to insure that, if flow-control is not to be used,
1004 we have an unlocked terminal at the start. */
1007 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1010 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1013 #if !defined (DOS_NT)
1015 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1020 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1021 if (interrupt_input
)
1023 old_fcntl_owner
[fileno (tty_out
->input
)] =
1024 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1025 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1026 init_sigio (fileno (tty_out
->input
));
1028 if (gpm_tty
== tty_out
)
1030 /* Arrange for mouse events to give us SIGIO signals. */
1031 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1032 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1033 init_sigio (gpm_fd
);
1035 #endif /* HAVE_GPM */
1037 #endif /* F_GETOWN */
1038 #endif /* F_SETFL */
1041 /* This symbol is defined on recent USG systems.
1042 Someone says without this call USG won't really buffer the file
1043 even with a call to setbuf. */
1044 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1046 setbuf (tty_out
->output
, (char *) _sobuf
);
1049 if (tty_out
->terminal
->set_terminal_modes_hook
)
1050 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1052 if (!tty_out
->term_initted
)
1054 Lisp_Object tail
, frame
;
1055 FOR_EACH_FRAME (tail
, frame
)
1057 /* XXX This needs to be revised. */
1058 if (FRAME_TERMCAP_P (XFRAME (frame
))
1059 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1060 init_frame_faces (XFRAME (frame
));
1064 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1066 /* We used to call "direct_output_forward_char(0)" here,
1067 but it's not clear why, since it may not do anything anyway. */
1071 Lisp_Object tail
, frame
;
1073 FOR_EACH_FRAME (tail
, frame
)
1075 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1076 || FRAME_MSDOS_P (XFRAME (frame
)))
1077 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1078 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1082 tty_out
->term_initted
= 1;
1085 /* Return nonzero if safe to use tabs in output.
1086 At the time this is called, init_sys_modes has not been done yet. */
1089 tabs_safe_p (int fd
)
1091 struct emacs_tty etty
;
1093 emacs_get_tty (fd
, &etty
);
1096 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1097 #else /* not TABDLY */
1099 #endif /* not TABDLY */
1105 /* Get terminal size from system.
1106 Store number of lines into *HEIGHTP and width into *WIDTHP.
1107 We store 0 if there's no valid information. */
1110 get_tty_size (int fd
, int *widthp
, int *heightp
)
1116 struct winsize size
;
1118 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1119 *widthp
= *heightp
= 0;
1122 *widthp
= size
.ws_col
;
1123 *heightp
= size
.ws_row
;
1129 /* SunOS - style. */
1130 struct ttysize size
;
1132 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1133 *widthp
= *heightp
= 0;
1136 *widthp
= size
.ts_cols
;
1137 *heightp
= size
.ts_lines
;
1142 *widthp
= ScreenCols ();
1143 *heightp
= ScreenRows ();
1144 #else /* system doesn't know size */
1148 #endif /* not SunOS-style */
1149 #endif /* not BSD-style */
1152 /* Set the logical window size associated with descriptor FD
1153 to HEIGHT and WIDTH. This is used mainly with ptys. */
1156 set_window_size (int fd
, int height
, int width
)
1161 struct winsize size
;
1162 size
.ws_row
= height
;
1163 size
.ws_col
= width
;
1165 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1166 return 0; /* error */
1173 /* SunOS - style. */
1174 struct ttysize size
;
1175 size
.ts_lines
= height
;
1176 size
.ts_cols
= width
;
1178 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1184 #endif /* not SunOS-style */
1185 #endif /* not BSD-style */
1190 /* Prepare all terminal devices for exiting Emacs. */
1193 reset_all_sys_modes (void)
1195 struct tty_display_info
*tty
;
1196 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1197 reset_sys_modes (tty
);
1200 /* Prepare the terminal for closing it; move the cursor to the
1201 bottom of the frame, turn off interrupt-driven I/O, etc. */
1204 reset_sys_modes (struct tty_display_info
*tty_out
)
1211 if (!tty_out
->term_initted
)
1214 if (!tty_out
->output
)
1215 return; /* The tty is suspended. */
1217 /* Go to and clear the last line of the terminal. */
1219 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1221 /* Code adapted from tty_clear_end_of_line. */
1222 if (tty_out
->TS_clr_line
)
1224 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1227 { /* have to do it the hard way */
1229 tty_turn_off_insert (tty_out
);
1231 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1233 fputc (' ', tty_out
->output
);
1237 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1238 fflush (tty_out
->output
);
1240 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1241 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1244 /* Avoid possible loss of output when changing terminal modes. */
1245 fsync (fileno (tty_out
->output
));
1249 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1250 if (interrupt_input
)
1252 reset_sigio (fileno (tty_out
->input
));
1253 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1254 old_fcntl_owner
[fileno (tty_out
->input
)]);
1256 #endif /* F_SETOWN */
1258 fcntl (fileno (tty_out
->input
), F_SETFL
,
1259 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1261 #endif /* F_SETFL */
1263 if (tty_out
->old_tty
)
1264 while (emacs_set_tty (fileno (tty_out
->input
),
1265 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1268 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1276 /* Set up the proper status flags for use of a pty. */
1281 /* I'm told that TOICREMOTE does not mean control chars
1282 "can't be sent" but rather that they don't have
1283 input-editing or signaling effects.
1284 That should be good, because we have other ways
1285 to do those things in Emacs.
1286 However, telnet mode seems not to work on 4.2.
1287 So TIOCREMOTE is turned off now. */
1289 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1290 will hang. In particular, the "timeout" feature (which
1291 causes a read to return if there is no data available)
1292 does this. Also it is known that telnet mode will hang
1293 in such a way that Emacs must be stopped (perhaps this
1294 is the same problem).
1296 If TIOCREMOTE is turned off, then there is a bug in
1297 hp-ux which sometimes loses data. Apparently the
1298 code which blocks the master process when the internal
1299 buffer fills up does not work. Other than this,
1300 though, everything else seems to work fine.
1302 Since the latter lossage is more benign, we may as well
1303 lose that way. -- cph */
1305 #if defined(UNIX98_PTYS)
1308 ioctl (fd
, FIONBIO
, &on
);
1313 #endif /* HAVE_PTYS */
1316 #include <sys/socket.h>
1318 #endif /* HAVE_SOCKETS */
1321 #ifndef HAVE_H_ERRNO
1324 #endif /* TRY_AGAIN */
1327 init_system_name (void)
1329 #ifndef HAVE_GETHOSTNAME
1332 Vsystem_name
= build_string (uts
.nodename
);
1333 #else /* HAVE_GETHOSTNAME */
1334 unsigned int hostname_size
= 256;
1335 char *hostname
= (char *) alloca (hostname_size
);
1337 /* Try to get the host name; if the buffer is too short, try
1338 again. Apparently, the only indication gethostname gives of
1339 whether the buffer was large enough is the presence or absence
1340 of a '\0' in the string. Eech. */
1343 gethostname (hostname
, hostname_size
- 1);
1344 hostname
[hostname_size
- 1] = '\0';
1346 /* Was the buffer large enough for the '\0'? */
1347 if (strlen (hostname
) < hostname_size
- 1)
1350 hostname_size
<<= 1;
1351 hostname
= (char *) alloca (hostname_size
);
1354 /* Turn the hostname into the official, fully-qualified hostname.
1355 Don't do this if we're going to dump; this can confuse system
1356 libraries on some machines and make the dumped emacs core dump. */
1359 #endif /* not CANNOT_DUMP */
1360 if (! strchr (hostname
, '.'))
1363 #ifdef HAVE_GETADDRINFO
1364 struct addrinfo
*res
;
1365 struct addrinfo hints
;
1368 memset (&hints
, 0, sizeof (hints
));
1369 hints
.ai_socktype
= SOCK_STREAM
;
1370 hints
.ai_flags
= AI_CANONNAME
;
1372 for (count
= 0;; count
++)
1374 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1375 || ret
!= EAI_AGAIN
)
1380 Fsleep_for (make_number (1), Qnil
);
1385 struct addrinfo
*it
= res
;
1388 char *fqdn
= it
->ai_canonname
;
1389 if (fqdn
&& strchr (fqdn
, '.')
1390 && strcmp (fqdn
, "localhost.localdomain") != 0)
1396 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1397 strcpy (hostname
, it
->ai_canonname
);
1401 #else /* !HAVE_GETADDRINFO */
1403 for (count
= 0;; count
++)
1409 hp
= gethostbyname (hostname
);
1411 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1418 Fsleep_for (make_number (1), Qnil
);
1423 char *fqdn
= (char *) hp
->h_name
;
1425 if (!strchr (fqdn
, '.'))
1427 /* We still don't have a fully qualified domain name.
1428 Try to find one in the list of alternate names */
1429 char **alias
= hp
->h_aliases
;
1431 && (!strchr (*alias
, '.')
1432 || !strcmp (*alias
, "localhost.localdomain")))
1439 #endif /* !HAVE_GETADDRINFO */
1441 #endif /* HAVE_SOCKETS */
1442 Vsystem_name
= build_string (hostname
);
1443 #endif /* HAVE_GETHOSTNAME */
1446 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1447 if (*p
== ' ' || *p
== '\t')
1452 /* POSIX signals support - DJB */
1453 /* Anyone with POSIX signals should have ANSI C declarations */
1455 sigset_t empty_mask
;
1460 sys_signal (int signal_number
, signal_handler_t action
)
1462 struct sigaction new_action
, old_action
;
1463 sigemptyset (&new_action
.sa_mask
);
1464 new_action
.sa_handler
= action
;
1465 new_action
.sa_flags
= 0;
1466 #if defined (SA_RESTART)
1467 /* Emacs mostly works better with restartable system services. If this
1468 flag exists, we probably want to turn it on here.
1469 However, on some systems this resets the timeout of `select'
1470 which means that `select' never finishes if it keeps getting signals.
1471 BROKEN_SA_RESTART is defined on those systems. */
1472 /* It's not clear why the comment above says "mostly works better". --Stef
1473 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1474 for pending input so we need long-running syscalls to be interrupted
1475 after a signal that sets the interrupt_input_pending flag. */
1476 /* Non-interactive keyboard input goes through stdio, where we always
1477 want restartable system calls. */
1478 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1481 new_action
.sa_flags
= SA_RESTART
;
1483 sigaction (signal_number
, &new_action
, &old_action
);
1484 return (old_action
.sa_handler
);
1487 #endif /* WINDOWSNT */
1490 /* If we're compiling with GCC, we don't need this function, since it
1491 can be written as a macro. */
1493 sys_sigmask (int sig
)
1496 sigemptyset (&mask
);
1497 sigaddset (&mask
, sig
);
1502 /* I'd like to have these guys return pointers to the mask storage in here,
1503 but there'd be trouble if the code was saving multiple masks. I'll be
1504 safe and pass the structure. It normally won't be more than 2 bytes
1508 sys_sigblock (sigset_t new_mask
)
1511 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1516 sys_sigunblock (sigset_t new_mask
)
1519 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1524 sys_sigsetmask (sigset_t new_mask
)
1527 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1532 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1533 static char *my_sys_siglist
[NSIG
];
1537 # define sys_siglist my_sys_siglist
1543 sigemptyset (&empty_mask
);
1545 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1549 sys_siglist
[SIGABRT
] = "Aborted";
1552 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1555 sys_siglist
[SIGALRM
] = "Alarm clock";
1558 sys_siglist
[SIGBUS
] = "Bus error";
1561 sys_siglist
[SIGCLD
] = "Child status changed";
1564 sys_siglist
[SIGCHLD
] = "Child status changed";
1567 sys_siglist
[SIGCONT
] = "Continued";
1570 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1573 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1576 sys_siglist
[SIGEMT
] = "Emulation trap";
1579 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1582 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1585 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1588 sys_siglist
[SIGHUP
] = "Hangup";
1591 sys_siglist
[SIGILL
] = "Illegal instruction";
1594 sys_siglist
[SIGINT
] = "Interrupt";
1597 sys_siglist
[SIGIO
] = "I/O possible";
1600 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1603 sys_siglist
[SIGIOT
] = "IOT trap";
1606 sys_siglist
[SIGKILL
] = "Killed";
1609 sys_siglist
[SIGLOST
] = "Resource lost";
1612 sys_siglist
[SIGLWP
] = "SIGLWP";
1615 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1618 sys_siglist
[SIGWIND
] = "SIGPHONE";
1621 sys_siglist
[SIGPIPE
] = "Broken pipe";
1624 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1627 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1630 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1633 sys_siglist
[SIGPWR
] = "Power-fail restart";
1636 sys_siglist
[SIGQUIT
] = "Quit";
1639 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1642 sys_siglist
[SIGSAK
] = "Secure attention";
1645 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1648 sys_siglist
[SIGSOUND
] = "Sound completed";
1651 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1654 sys_siglist
[SIGSTP
] = "Stopped (user)";
1657 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1660 sys_siglist
[SIGTERM
] = "Terminated";
1663 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1666 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1669 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1672 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1675 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1678 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1681 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1684 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1687 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1690 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1693 sys_siglist
[SIGWINCH
] = "Window size changed";
1696 sys_siglist
[SIGWIND
] = "SIGWIND";
1699 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1702 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1705 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1714 /* Figure out how many bits the system's random number generator uses.
1715 `random' and `lrand48' are assumed to return 31 usable bits.
1716 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1717 so we'll shift it and treat it like the 15-bit USG `rand'. */
1721 # define RAND_BITS 31
1722 # else /* !HAVE_RANDOM */
1723 # ifdef HAVE_LRAND48
1724 # define RAND_BITS 31
1725 # define random lrand48
1726 # else /* !HAVE_LRAND48 */
1727 # define RAND_BITS 15
1728 # if RAND_MAX == 32767
1729 # define random rand
1730 # else /* RAND_MAX != 32767 */
1731 # if RAND_MAX == 2147483647
1732 # define random() (rand () >> 16)
1733 # else /* RAND_MAX != 2147483647 */
1735 # define random rand
1737 # define random() (rand () >> 16)
1739 # endif /* RAND_MAX != 2147483647 */
1740 # endif /* RAND_MAX != 32767 */
1741 # endif /* !HAVE_LRAND48 */
1742 # endif /* !HAVE_RANDOM */
1743 #endif /* !RAND_BITS */
1746 seed_random (long int arg
)
1749 srandom ((unsigned int)arg
);
1751 # ifdef HAVE_LRAND48
1754 srand ((unsigned int)arg
);
1760 * Build a full Emacs-sized word out of whatever we've got.
1761 * This suffices even for a 64-bit architecture with a 15-bit rand.
1768 for (i
= 0; i
< (VALBITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
1769 val
= (val
<< RAND_BITS
) ^ random ();
1770 return val
& (((EMACS_INT
) 1 << VALBITS
) - 1);
1773 #ifndef HAVE_STRERROR
1779 extern char *sys_errlist
[];
1780 extern int sys_nerr
;
1782 if (errnum
>= 0 && errnum
< sys_nerr
)
1783 return sys_errlist
[errnum
];
1784 return (char *) "Unknown error";
1786 #endif /* not WINDOWSNT */
1787 #endif /* ! HAVE_STRERROR */
1790 emacs_open (const char *path
, int oflag
, int mode
)
1792 register int rtnval
;
1794 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1795 && (errno
== EINTR
))
1801 emacs_close (int fd
)
1804 register int rtnval
;
1806 while ((rtnval
= close (fd
)) == -1
1807 && (errno
== EINTR
))
1810 /* If close is interrupted SunOS 4.1 may or may not have closed the
1811 file descriptor. If it did the second close will fail with
1812 errno = EBADF. That means we have succeeded. */
1813 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1819 /* Maximum number of bytes to read or write in a single system call.
1820 This works around a serious bug in Linux kernels before 2.6.16; see
1821 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
1822 It's likely to work around similar bugs in other operating systems, so do it
1823 on all platforms. Round INT_MAX down to a page size, with the conservative
1824 assumption that page sizes are at most 2**18 bytes (any kernel with a
1825 page size larger than that shouldn't have the bug). */
1826 #ifndef MAX_RW_COUNT
1827 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
1830 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
1831 Return the number of bytes read, which might be less than NBYTE.
1832 On error, set errno and return -1. */
1834 emacs_read (int fildes
, char *buf
, EMACS_INT nbyte
)
1836 register ssize_t rtnval
;
1838 /* There is no need to check against MAX_RW_COUNT, since no caller ever
1839 passes a size that large to emacs_read. */
1841 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1842 && (errno
== EINTR
))
1847 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
1848 or if a partial write occurs. Return the number of bytes written, setting
1849 errno if this is less than NBYTE. */
1851 emacs_write (int fildes
, const char *buf
, EMACS_INT nbyte
)
1854 EMACS_INT bytes_written
;
1860 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
1867 /* I originally used `QUIT' but that might causes files to
1868 be truncated if you hit C-g in the middle of it. --Stef */
1869 process_pending_signals ();
1879 bytes_written
+= rtnval
;
1882 return (bytes_written
);
1885 static struct allocator
const emacs_norealloc_allocator
=
1886 { xmalloc
, NULL
, xfree
, memory_full
};
1888 /* Get the symbolic link value of FILENAME. Return a pointer to a
1889 NUL-terminated string. If readlink fails, return NULL and set
1890 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
1891 Otherwise, allocate memory and return a pointer to that memory. If
1892 memory allocation fails, diagnose and fail without returning. If
1893 successful, store the length of the symbolic link into *LINKLEN. */
1895 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
1897 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
1898 &emacs_norealloc_allocator
, careadlinkatcwd
);
1903 * All of the following are for USG.
1905 * On USG systems the system calls are INTERRUPTIBLE by signals
1906 * that the user program has elected to catch. Thus the system call
1907 * must be retried in these cases. To handle this without massive
1908 * changes in the source code, we remap the standard system call names
1909 * to names for our own functions in sysdep.c that do the system call
1910 * with retries. Actually, for portability reasons, it is good
1911 * programming practice, as this example shows, to limit all actual
1912 * system calls to a single occurrence in the source. Sure, this
1913 * adds an extra level of function call overhead but it is almost
1914 * always negligible. Fred Fish, Unisoft Systems Inc.
1918 * Warning, this function may not duplicate 4.2 action properly
1919 * under error conditions.
1925 /* In 4.1, param.h fails to define this. */
1926 #define MAXPATHLEN 1024
1930 getwd (char *pathname
)
1932 char *npath
, *spath
;
1933 extern char *getcwd (char *, size_t);
1935 BLOCK_INPUT
; /* getcwd uses malloc */
1936 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1942 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1943 up to first slash. Should be harmless on other systems. */
1944 while (*npath
&& *npath
!= '/')
1946 strcpy (pathname
, npath
);
1947 free (spath
); /* getcwd uses malloc */
1952 #endif /* HAVE_GETWD */
1955 * Emulate rename using unlink/link. Note that this is
1956 * only partially correct. Also, doesn't enforce restriction
1957 * that files be of same type (regular->regular, dir->dir, etc).
1963 rename (const char *from
, const char *to
)
1965 if (access (from
, 0) == 0)
1968 if (link (from
, to
) == 0)
1969 if (unlink (from
) == 0)
1978 #if defined(HPUX) && !defined(HAVE_PERROR)
1980 /* HPUX curses library references perror, but as far as we know
1981 it won't be called. Anyway this definition will do for now. */
1987 #endif /* HPUX and not HAVE_PERROR */
1992 * Emulate BSD dup2. First close newd if it already exists.
1993 * Then, attempt to dup oldd. If not successful, call dup2 recursively
1994 * until we are, then close the unsuccessful ones.
1998 dup2 (int oldd
, int newd
)
2000 register int fd
, ret
;
2005 return fcntl (oldd
, F_DUPFD
, newd
);
2012 ret
= dup2 (old
,new);
2018 #endif /* not HAVE_DUP2 */
2021 * Gettimeofday. Simulate as much as possible. Only accurate
2022 * to nearest second. Emacs doesn't use tzp so ignore it for now.
2023 * Only needed when subprocesses are defined.
2026 #ifndef HAVE_GETTIMEOFDAY
2030 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
2032 extern long time (long);
2034 tp
->tv_sec
= time ((long *)0);
2037 tzp
->tz_minuteswest
= -1;
2042 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2045 * This function will go away as soon as all the stubs fixed. (fnf)
2049 croak (char *badfunc
)
2051 printf ("%s not yet implemented\r\n", badfunc
);
2052 reset_all_sys_modes ();
2058 /* Directory routines for systems that don't have them. */
2060 #ifdef HAVE_DIRENT_H
2064 #if !defined (HAVE_CLOSEDIR)
2067 closedir (DIR *dirp
/* stream from opendir */)
2071 rtnval
= emacs_close (dirp
->dd_fd
);
2072 xfree ((char *) dirp
);
2076 #endif /* not HAVE_CLOSEDIR */
2077 #endif /* HAVE_DIRENT_H */
2081 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2084 struct timeval tv
[2];
2087 return utimes (filename
, tv
);
2088 #else /* not HAVE_UTIMES */
2090 utb
.actime
= EMACS_SECS (atime
);
2091 utb
.modtime
= EMACS_SECS (mtime
);
2092 return utime (filename
, &utb
);
2093 #endif /* not HAVE_UTIMES */
2096 /* mkdir and rmdir functions, for systems which don't have them. */
2100 * Written by Robert Rother, Mariah Corporation, August 1985.
2102 * If you want it, it's yours. All I ask in return is that if you
2103 * figure out how to do this in a Bourne Shell script you send me
2105 * sdcsvax!rmr or rmr@uscd
2107 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2108 * subroutine. 11Mar86; hoptoad!gnu
2110 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2111 * subroutine didn't return EEXIST. It does now.
2118 mkdir (char *dpath
, int dmode
)
2120 int cpid
, status
, fd
;
2121 struct stat statbuf
;
2123 if (stat (dpath
, &statbuf
) == 0)
2125 errno
= EEXIST
; /* Stat worked, so it already exists */
2129 /* If stat fails for a reason other than non-existence, return error */
2130 if (errno
!= ENOENT
)
2133 synch_process_alive
= 1;
2134 switch (cpid
= fork ())
2137 case -1: /* Error in fork */
2138 return (-1); /* Errno is set already */
2140 case 0: /* Child process */
2142 * Cheap hack to set mode of new directory. Since this
2143 * child process is going away anyway, we zap its umask.
2144 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2145 * directory. Does anybody care?
2147 status
= umask (0); /* Get current umask */
2148 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2149 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2156 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2157 _exit (-1); /* Can't exec /bin/mkdir */
2159 default: /* Parent process */
2160 wait_for_termination (cpid
);
2163 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2164 || synch_process_termsig
!= 0)
2166 errno
= EIO
; /* We don't know why, but */
2167 return -1; /* /bin/mkdir failed */
2172 #endif /* not HAVE_MKDIR */
2178 int cpid
, status
, fd
;
2179 struct stat statbuf
;
2181 if (stat (dpath
, &statbuf
) != 0)
2183 /* Stat just set errno. We don't have to */
2187 synch_process_alive
= 1;
2188 switch (cpid
= fork ())
2191 case -1: /* Error in fork */
2192 return (-1); /* Errno is set already */
2194 case 0: /* Child process */
2195 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2202 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2203 _exit (-1); /* Can't exec /bin/rmdir */
2205 default: /* Parent process */
2206 wait_for_termination (cpid
);
2209 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2210 || synch_process_termsig
!= 0)
2212 errno
= EIO
; /* We don't know why, but */
2213 return -1; /* /bin/rmdir failed */
2218 #endif /* !HAVE_RMDIR */
2223 memset (void *b
, int n
, size_t length
)
2225 unsigned char *p
= b
;
2226 while (length
-- > 0)
2230 #endif /* !HAVE_MEMSET */
2234 memcpy (void *b1
, void *b2
, size_t length
)
2236 unsigned char *p1
= b1
, *p2
= b2
;
2237 while (length
-- > 0)
2241 #endif /* !HAVE_MEMCPY */
2243 #ifndef HAVE_MEMMOVE
2245 memmove (void *b1
, void *b2
, size_t length
)
2247 unsigned char *p1
= b1
, *p2
= b2
;
2248 if (p1
< p2
|| p1
>= p2
+ length
)
2249 while (length
-- > 0)
2255 while (length
-- > 0)
2260 #endif /* !HAVE_MEMCPY */
2264 memcmp (void *b1
, void *b2
, size_t length
)
2266 unsigned char *p1
= b1
, *p2
= b2
;
2267 while (length
-- > 0)
2269 return p1
[-1] < p2
[-1] ? -1 : 1;
2272 #endif /* !HAVE_MEMCMP */
2274 #ifndef HAVE_STRSIGNAL
2276 strsignal (int code
)
2280 if (0 <= code
&& code
< NSIG
)
2282 /* Cast to suppress warning if the table has const char *. */
2283 signame
= (char *) sys_siglist
[code
];
2288 #endif /* HAVE_STRSIGNAL */
2291 /* For make-serial-process */
2293 serial_open (char *port
)
2297 fd
= emacs_open ((char*) port
,
2310 error ("Could not open %s: %s",
2311 port
, emacs_strerror (errno
));
2314 ioctl (fd
, TIOCEXCL
, (char *) 0);
2320 #if !defined (HAVE_CFMAKERAW)
2321 /* Workaround for targets which are missing cfmakeraw. */
2322 /* Pasted from man page. */
2324 cfmakeraw (struct termios
*termios_p
)
2326 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2327 termios_p
->c_oflag
&= ~OPOST
;
2328 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2329 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2330 termios_p
->c_cflag
|= CS8
;
2332 #endif /* !defined (HAVE_CFMAKERAW */
2334 #if !defined (HAVE_CFSETSPEED)
2335 /* Workaround for targets which are missing cfsetspeed. */
2337 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2339 return (cfsetispeed (termios_p
, vitesse
)
2340 + cfsetospeed (termios_p
, vitesse
));
2344 /* For serial-process-configure */
2346 serial_configure (struct Lisp_Process
*p
,
2347 Lisp_Object contact
)
2349 Lisp_Object childp2
= Qnil
;
2350 Lisp_Object tem
= Qnil
;
2351 struct termios attr
;
2353 char summary
[4] = "???"; /* This usually becomes "8N1". */
2355 childp2
= Fcopy_sequence (p
->childp
);
2357 /* Read port attributes and prepare default configuration. */
2358 err
= tcgetattr (p
->outfd
, &attr
);
2360 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2362 #if defined (CLOCAL)
2363 attr
.c_cflag
|= CLOCAL
;
2366 attr
.c_cflag
|= CREAD
;
2369 /* Configure speed. */
2370 if (!NILP (Fplist_member (contact
, QCspeed
)))
2371 tem
= Fplist_get (contact
, QCspeed
);
2373 tem
= Fplist_get (p
->childp
, QCspeed
);
2375 err
= cfsetspeed (&attr
, XINT (tem
));
2377 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2378 emacs_strerror (errno
));
2379 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2381 /* Configure bytesize. */
2382 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2383 tem
= Fplist_get (contact
, QCbytesize
);
2385 tem
= Fplist_get (p
->childp
, QCbytesize
);
2387 tem
= make_number (8);
2389 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2390 error (":bytesize must be nil (8), 7, or 8");
2391 summary
[0] = XINT (tem
) + '0';
2392 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2393 attr
.c_cflag
&= ~CSIZE
;
2394 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2396 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2397 if (XINT (tem
) != 8)
2398 error ("Bytesize cannot be changed");
2400 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2402 /* Configure parity. */
2403 if (!NILP (Fplist_member (contact
, QCparity
)))
2404 tem
= Fplist_get (contact
, QCparity
);
2406 tem
= Fplist_get (p
->childp
, QCparity
);
2407 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2408 error (":parity must be nil (no parity), `even', or `odd'");
2409 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2410 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2411 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2416 else if (EQ (tem
, Qeven
))
2419 attr
.c_cflag
|= PARENB
;
2420 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2422 else if (EQ (tem
, Qodd
))
2425 attr
.c_cflag
|= (PARENB
| PARODD
);
2426 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2429 /* Don't error on no parity, which should be set by cfmakeraw. */
2431 error ("Parity cannot be configured");
2433 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2435 /* Configure stopbits. */
2436 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2437 tem
= Fplist_get (contact
, QCstopbits
);
2439 tem
= Fplist_get (p
->childp
, QCstopbits
);
2441 tem
= make_number (1);
2443 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2444 error (":stopbits must be nil (1 stopbit), 1, or 2");
2445 summary
[2] = XINT (tem
) + '0';
2446 #if defined (CSTOPB)
2447 attr
.c_cflag
&= ~CSTOPB
;
2448 if (XINT (tem
) == 2)
2449 attr
.c_cflag
|= CSTOPB
;
2451 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2452 if (XINT (tem
) != 1)
2453 error ("Stopbits cannot be configured");
2455 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2457 /* Configure flowcontrol. */
2458 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2459 tem
= Fplist_get (contact
, QCflowcontrol
);
2461 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2462 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2463 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2464 #if defined (CRTSCTS)
2465 attr
.c_cflag
&= ~CRTSCTS
;
2467 #if defined (CNEW_RTSCTS)
2468 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2470 #if defined (IXON) && defined (IXOFF)
2471 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2475 /* Already configured. */
2477 else if (EQ (tem
, Qhw
))
2479 #if defined (CRTSCTS)
2480 attr
.c_cflag
|= CRTSCTS
;
2481 #elif defined (CNEW_RTSCTS)
2482 attr
.c_cflag
|= CNEW_RTSCTS
;
2484 error ("Hardware flowcontrol (RTS/CTS) not supported");
2487 else if (EQ (tem
, Qsw
))
2489 #if defined (IXON) && defined (IXOFF)
2490 attr
.c_iflag
|= (IXON
| IXOFF
);
2492 error ("Software flowcontrol (XON/XOFF) not supported");
2495 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2497 /* Activate configuration. */
2498 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2500 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2502 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2503 p
->childp
= childp2
;
2506 #endif /* not DOS_NT */
2508 /* System depended enumeration of and access to system processes a-la ps(1). */
2512 /* Process enumeration and access via /proc. */
2515 list_system_processes (void)
2517 Lisp_Object procdir
, match
, proclist
, next
;
2518 struct gcpro gcpro1
, gcpro2
;
2519 register Lisp_Object tail
;
2521 GCPRO2 (procdir
, match
);
2522 /* For every process on the system, there's a directory in the
2523 "/proc" pseudo-directory whose name is the numeric ID of that
2525 procdir
= build_string ("/proc");
2526 match
= build_string ("[0-9]+");
2527 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2529 /* `proclist' gives process IDs as strings. Destructively convert
2530 each string into a number. */
2531 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2534 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2538 /* directory_files_internal returns the files in reverse order; undo
2540 proclist
= Fnreverse (proclist
);
2544 /* The WINDOWSNT implementation is in w32.c.
2545 The MSDOS implementation is in dosfns.c. */
2546 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2549 list_system_processes (void)
2554 #endif /* !defined (WINDOWSNT) */
2558 time_from_jiffies (unsigned long long tval
, long hz
,
2559 time_t *sec
, unsigned *usec
)
2561 unsigned long long ullsec
;
2565 tval
-= ullsec
* hz
;
2566 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2568 *usec
= tval
* 1000000 / hz
;
2570 *usec
= tval
/ (hz
/ 1000000);
2574 ltime_from_jiffies (unsigned long long tval
, long hz
)
2579 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2581 return list3 (make_number ((sec
>> 16) & 0xffff),
2582 make_number (sec
& 0xffff),
2583 make_number (usec
));
2587 get_up_time (time_t *sec
, unsigned *usec
)
2594 fup
= fopen ("/proc/uptime", "r");
2598 double uptime
, idletime
;
2600 /* The numbers in /proc/uptime use C-locale decimal point, but
2601 we already set ourselves to the C locale (see `fixup_locale'
2603 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2606 *usec
= (uptime
- *sec
) * 1000000;
2613 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2614 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2617 procfs_ttyname (int rdev
)
2620 char name
[PATH_MAX
];
2623 fdev
= fopen ("/proc/tty/drivers", "r");
2628 unsigned long minor_beg
, minor_end
;
2629 char minor
[25]; /* 2 32-bit numbers + dash */
2632 while (!feof (fdev
) && !ferror (fdev
))
2634 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2635 && major
== MAJOR (rdev
))
2637 minor_beg
= strtoul (minor
, &endp
, 0);
2639 minor_end
= minor_beg
;
2640 else if (*endp
== '-')
2641 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2645 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2647 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2655 return build_string (name
);
2658 static unsigned long
2659 procfs_get_total_memory (void)
2662 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2665 fmem
= fopen ("/proc/meminfo", "r");
2669 unsigned long entry_value
;
2670 char entry_name
[20]; /* the longest I saw is 13+1 */
2672 while (!feof (fmem
) && !ferror (fmem
))
2674 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2675 && strcmp (entry_name
, "MemTotal:") == 0)
2677 retval
= entry_value
;
2688 system_process_attributes (Lisp_Object pid
)
2690 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2694 long clocks_per_sec
;
2696 char procbuf
[1025], *p
, *q
;
2699 const char *cmd
= NULL
;
2700 char *cmdline
= NULL
;
2701 size_t cmdsize
= 0, cmdline_size
;
2703 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2704 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2705 long priority
, niceness
, rss
;
2706 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2709 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2711 Lisp_Object attrs
= Qnil
;
2712 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2713 struct gcpro gcpro1
, gcpro2
;
2714 EMACS_INT uid_eint
, gid_eint
;
2716 CHECK_NUMBER_OR_FLOAT (pid
);
2717 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2718 sprintf (procfn
, "/proc/%u", proc_id
);
2719 if (stat (procfn
, &st
) < 0)
2722 GCPRO2 (attrs
, decoded_cmd
);
2726 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2728 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2730 pw
= getpwuid (uid
);
2733 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2737 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2739 gr
= getgrgid (gid
);
2742 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2744 strcpy (fn
, procfn
);
2745 procfn_end
= fn
+ strlen (fn
);
2746 strcpy (procfn_end
, "/stat");
2747 fd
= emacs_open (fn
, O_RDONLY
, 0);
2748 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2750 procbuf
[nread
] = '\0';
2753 p
= strchr (p
, '(');
2756 q
= strrchr (p
+ 1, ')');
2771 /* Command name is encoded in locale-coding-system; decode it. */
2772 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2773 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2774 Vlocale_coding_system
, 0);
2775 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2779 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2781 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2782 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2783 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2784 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2785 &u_time
, &s_time
, &cutime
, &cstime
,
2786 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2791 state_str
[1] = '\0';
2792 tem
= build_string (state_str
);
2793 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2795 /* Stops GCC whining about limited range of data type. */
2800 thcount_eint
= thcount
;
2801 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2802 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2803 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2804 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2805 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2806 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2807 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2808 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2809 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2810 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2811 if (clocks_per_sec
< 0)
2812 clocks_per_sec
= 100;
2813 attrs
= Fcons (Fcons (Qutime
,
2814 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2816 attrs
= Fcons (Fcons (Qstime
,
2817 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2819 attrs
= Fcons (Fcons (Qtime
,
2820 ltime_from_jiffies (s_time
+ u_time
,
2823 attrs
= Fcons (Fcons (Qcutime
,
2824 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2826 attrs
= Fcons (Fcons (Qcstime
,
2827 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2829 attrs
= Fcons (Fcons (Qctime
,
2830 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2832 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2833 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2834 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2835 EMACS_GET_TIME (tnow
);
2836 get_up_time (&sec
, &usec
);
2837 EMACS_SET_SECS (telapsed
, sec
);
2838 EMACS_SET_USECS (telapsed
, usec
);
2839 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2840 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2841 EMACS_SET_SECS (tstart
, sec
);
2842 EMACS_SET_USECS (tstart
, usec
);
2843 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2844 attrs
= Fcons (Fcons (Qstart
,
2846 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2848 (EMACS_SECS (tstart
) & 0xffff),
2850 (EMACS_USECS (tstart
)))),
2852 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2853 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2854 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2855 attrs
= Fcons (Fcons (Qetime
,
2857 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2859 (EMACS_SECS (telapsed
) & 0xffff),
2861 (EMACS_USECS (telapsed
)))),
2863 time_from_jiffies (u_time
+ s_time
, clocks_per_sec
, &sec
, &usec
);
2864 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2867 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2868 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2871 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2878 strcpy (procfn_end
, "/cmdline");
2879 fd
= emacs_open (fn
, O_RDONLY
, 0);
2883 for (cmdline_size
= 0; emacs_read (fd
, &ch
, 1) == 1; cmdline_size
++)
2886 if (isspace (c
) || c
== '\\')
2887 cmdline_size
++; /* for later quoting, see below */
2891 cmdline
= xmalloc (cmdline_size
+ 1);
2892 lseek (fd
, 0L, SEEK_SET
);
2894 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2895 cmdline
[nread
++] = '\0';
2898 /* Assigning zero to `nread' makes us skip the following
2899 two loops, assign zero to cmdline_size, and enter the
2900 following `if' clause that handles unknown command
2904 /* We don't want trailing null characters. */
2905 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2907 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2909 /* Escape-quote whitespace and backslashes. */
2910 if (isspace (*p
) || *p
== '\\')
2912 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2916 else if (*p
== '\0')
2919 cmdline_size
= nread
;
2926 cmdsize
= strlen (cmd
);
2927 cmdline_size
= cmdsize
+ 2;
2928 cmdline
= xmalloc (cmdline_size
+ 1);
2929 strcpy (cmdline
, "[");
2930 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2933 /* Command line is encoded in locale-coding-system; decode it. */
2934 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2935 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2936 Vlocale_coding_system
, 0);
2938 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2945 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2947 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2948 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2949 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2950 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2951 #undef _FILE_OFFSET_BITS
2953 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2958 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2959 #define _FILE_OFFSET_BITS 64
2960 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2962 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2965 system_process_attributes (Lisp_Object pid
)
2967 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2972 struct psinfo pinfo
;
2975 int proc_id
, uid
, gid
;
2976 Lisp_Object attrs
= Qnil
;
2977 Lisp_Object decoded_cmd
, tem
;
2978 struct gcpro gcpro1
, gcpro2
;
2979 EMACS_INT uid_eint
, gid_eint
;
2981 CHECK_NUMBER_OR_FLOAT (pid
);
2982 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2983 sprintf (procfn
, "/proc/%u", proc_id
);
2984 if (stat (procfn
, &st
) < 0)
2987 GCPRO2 (attrs
, decoded_cmd
);
2991 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2993 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2995 pw
= getpwuid (uid
);
2998 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3002 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
3004 gr
= getgrgid (gid
);
3007 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3009 strcpy (fn
, procfn
);
3010 procfn_end
= fn
+ strlen (fn
);
3011 strcpy (procfn_end
, "/psinfo");
3012 fd
= emacs_open (fn
, O_RDONLY
, 0);
3014 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3016 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3017 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3018 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3022 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3023 state_str
[1] = '\0';
3024 tem
= build_string (state_str
);
3025 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3028 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3029 need to get a string from it. */
3031 /* FIXME: missing: Qtpgid */
3043 Are they available? */
3045 attrs
= Fcons (Fcons (Qtime
,
3046 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3047 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3048 make_number (pinfo
.pr_time
.tv_nsec
))),
3051 attrs
= Fcons (Fcons (Qctime
,
3052 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3053 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3054 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3057 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3058 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3059 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3061 attrs
= Fcons (Fcons (Qstart
,
3062 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3063 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3064 make_number (pinfo
.pr_start
.tv_nsec
))),
3066 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3067 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3069 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3070 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3071 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3074 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3075 strlen (pinfo
.pr_fname
)),
3076 Vlocale_coding_system
, 0);
3077 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3079 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3080 strlen (pinfo
.pr_psargs
)),
3081 Vlocale_coding_system
, 0);
3082 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3092 /* The WINDOWSNT implementation is in w32.c.
3093 The MSDOS implementation is in dosfns.c. */
3094 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3097 system_process_attributes (Lisp_Object pid
)
3102 #endif /* !defined (WINDOWSNT) */