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 <ignore-value.h>
37 #include "sysselect.h"
38 #include "blockinput.h"
42 #define write sys_write
47 #endif /* not WINDOWSNT */
49 #include <sys/types.h>
56 #define setpgrp setpgid
60 /* Get SI_SRPC_DOMAIN, if it is available. */
61 #ifdef HAVE_SYS_SYSTEMINFO_H
62 #include <sys/systeminfo.h>
65 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
69 #include <sys/param.h>
78 #ifdef HAVE_SYS_UTSNAME_H
79 #include <sys/utsname.h>
81 #endif /* HAVE_SYS_UTSNAME_H */
86 #include "termhooks.h"
89 #include "dispextern.h"
91 #include "cm.h" /* for reset_sys_modes */
95 /* In process.h which conflicts with the local copy. */
97 int _cdecl
_spawnlp (int, const char *, const char *, ...);
98 int _cdecl
_getpid (void);
99 extern char *getwd (char *);
102 #include "syssignal.h"
109 #ifndef HAVE_STRUCT_UTIMBUF
110 /* We want to use utime rather than utimes, but we couldn't find the
111 structure declaration. We'll use the traditional one. */
119 /* Declare here, including term.h is problematic on some systems. */
120 extern void tputs (const char *, int, int (*)(int));
122 static const int baud_convert
[] =
124 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
125 1800, 2400, 4800, 9600, 19200, 38400
128 void croak (char *) NO_RETURN
;
130 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
132 SIGMASKTYPE sigprocmask_set
;
135 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
137 /* Return the current working directory. Returns NULL on errors.
138 Any other returned value must be freed with free. This is used
139 only when get_current_dir_name is not defined on the system. */
141 get_current_dir_name (void)
145 struct stat dotstat
, pwdstat
;
146 /* If PWD is accurate, use it instead of calling getwd. PWD is
147 sometimes a nicer name, and using it may avoid a fatal error if a
148 parent directory is searchable but not readable. */
149 if ((pwd
= getenv ("PWD")) != 0
150 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
151 && stat (pwd
, &pwdstat
) == 0
152 && stat (".", &dotstat
) == 0
153 && dotstat
.st_ino
== pwdstat
.st_ino
154 && dotstat
.st_dev
== pwdstat
.st_dev
156 && strlen (pwd
) < MAXPATHLEN
160 buf
= (char *) malloc (strlen (pwd
) + 1);
168 size_t buf_size
= 1024;
169 buf
= (char *) malloc (buf_size
);
174 if (getcwd (buf
, buf_size
) == buf
)
178 int tmp_errno
= errno
;
184 buf
= (char *) realloc (buf
, buf_size
);
192 /* We need MAXPATHLEN here. */
193 buf
= (char *) malloc (MAXPATHLEN
+ 1);
196 if (getwd (buf
) == NULL
)
198 int tmp_errno
= errno
;
210 /* Discard pending input on all input descriptors. */
213 discard_tty_input (void)
216 struct emacs_tty buf
;
221 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
222 while (dos_keyread () != -1)
224 #else /* not MSDOS */
226 struct tty_display_info
*tty
;
227 for (tty
= tty_list
; tty
; tty
= tty
->next
)
229 if (tty
->input
) /* Is the device suspended? */
231 emacs_get_tty (fileno (tty
->input
), &buf
);
232 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
236 #endif /* not MSDOS */
237 #endif /* not WINDOWSNT */
243 /* Arrange for character C to be read as the next input from
245 XXX What if we have multiple ttys?
251 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
254 /* Should perhaps error if in batch mode */
256 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
257 #else /* no TIOCSTI */
258 error ("Cannot stuff terminal input characters in this version of Unix");
259 #endif /* no TIOCSTI */
265 init_baud_rate (int fd
)
275 #else /* not DOS_NT */
280 emacs_ospeed
= cfgetospeed (&sg
);
281 #endif /* not DOS_NT */
284 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
285 ? baud_convert
[emacs_ospeed
] : 9600);
292 int wait_debugging
; /* Set nonzero to make following function work under dbx
293 (at least for bsd). */
296 /* Wait for subprocess with process id `pid' to terminate and
297 make sure it will get eliminated (not remain forever as a zombie) */
300 wait_for_termination (int pid
)
304 #if defined (BSD_SYSTEM) || defined (HPUX)
305 /* Note that kill returns -1 even if the process is just a zombie now.
306 But inevitably a SIGCHLD interrupt should be generated
307 and child_sig will do wait3 and make the process go away. */
308 /* There is some indication that there is a bug involved with
309 termination of subprocesses, perhaps involving a kernel bug too,
310 but no idea what it is. Just as a hunch we signal SIGCHLD to see
311 if that causes the problem to go away or get worse. */
312 sigsetmask (sigmask (SIGCHLD
));
313 if (0 > kill (pid
, 0))
315 sigsetmask (SIGEMPTYMASK
);
316 kill (getpid (), SIGCHLD
);
322 sigpause (SIGEMPTYMASK
);
323 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
327 #else /* not WINDOWSNT */
328 sigblock (sigmask (SIGCHLD
));
330 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
332 sigunblock (sigmask (SIGCHLD
));
336 sigsuspend (&empty_mask
);
337 #endif /* not WINDOWSNT */
338 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
343 * flush any pending output
344 * (may flush input as well; it does not matter the way we use it)
348 flush_pending_output (int channel
)
350 /* FIXME: maybe this function should be removed */
353 /* Set up the terminal at the other end of a pseudo-terminal that
354 we will be controlling an inferior through.
355 It should not echo or do line-editing, since that is done
356 in Emacs. No padding needed for insertion into an Emacs buffer. */
359 child_setup_tty (int out
)
364 emacs_get_tty (out
, &s
);
365 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
366 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
368 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
369 Some versions of GNU Hurd do not have FFDLY? */
371 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
372 /* No output delays */
374 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
375 /* No output delays */
378 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
379 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
381 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
384 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
387 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
389 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
390 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
391 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
392 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
395 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
398 #ifdef SIGNALS_VIA_CHARACTERS
399 /* the QUIT and INTR character are used in process_send_signal
400 so set them here to something useful. */
401 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
402 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
403 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
404 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
405 #endif /* not SIGNALS_VIA_CHARACTERS */
408 /* Also, PTY overloads NUL and BREAK.
409 don't ignore break, but don't signal either, so it looks like NUL. */
410 s
.main
.c_iflag
&= ~IGNBRK
;
411 s
.main
.c_iflag
&= ~BRKINT
;
412 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
413 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
414 would force it to 0377. That looks like duplicated code. */
415 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
418 /* We originally enabled ICANON (and set VEOF to 04), and then had
419 proces.c send additional EOF chars to flush the output when faced
420 with long lines, but this leads to weird effects when the
421 subprocess has disabled ICANON and ends up seeing those spurious
422 extra EOFs. So we don't send EOFs any more in
423 process.c:send_process. First we tried to disable ICANON by
424 default, so if a subsprocess sets up ICANON, it's his problem (or
425 the Elisp package that talks to it) to deal with lines that are
426 too long. But this disables some features, such as the ability
427 to send EOF signals. So we re-enabled ICANON but there is no
428 more "send eof to flush" going on (which is wrong and unportable
429 in itself). The correct way to handle too much output is to
430 buffer what could not be written and then write it again when
431 select returns ok for writing. This has it own set of
432 problems. Write is now asynchronous, is that a problem? How much
433 do we buffer, and what do we do when that limit is reached? */
435 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
436 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
437 #if 0 /* These settings only apply to non-ICANON mode. */
438 s
.main
.c_cc
[VMIN
] = 1;
439 s
.main
.c_cc
[VTIME
] = 0;
442 emacs_set_tty (out
, &s
, 0);
443 #endif /* not WINDOWSNT */
445 #endif /* not MSDOS */
448 /* Record a signal code and the handler for it. */
452 SIGTYPE (*handler
) (int);
455 static void save_signal_handlers (struct save_signal
*);
456 static void restore_signal_handlers (struct save_signal
*);
458 /* Suspend the Emacs process; give terminal to its superior. */
463 #if defined (SIGTSTP) && !defined (MSDOS)
466 int pgrp
= EMACS_GETPGRP (0);
467 EMACS_KILLPG (pgrp
, SIGTSTP
);
470 #else /* No SIGTSTP */
471 /* On a system where suspending is not implemented,
472 instead fork a subshell and let it talk directly to the terminal
476 #endif /* no SIGTSTP */
479 /* Fork a subshell. */
484 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
486 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
489 struct save_signal saved_handlers
[5];
491 unsigned char * IF_LINT (volatile) str
= 0;
494 saved_handlers
[0].code
= SIGINT
;
495 saved_handlers
[1].code
= SIGQUIT
;
496 saved_handlers
[2].code
= SIGTERM
;
498 saved_handlers
[3].code
= SIGIO
;
499 saved_handlers
[4].code
= 0;
501 saved_handlers
[3].code
= 0;
504 /* Mentioning current_buffer->buffer would mean including buffer.h,
505 which somehow wedges the hp compiler. So instead... */
507 dir
= intern ("default-directory");
508 if (NILP (Fboundp (dir
)))
510 dir
= Fsymbol_value (dir
);
514 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
515 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
517 memcpy (str
, SDATA (dir
), len
);
518 if (str
[len
- 1] != '/') str
[len
++] = '/';
524 save_signal_handlers (saved_handlers
);
525 synch_process_alive
= 1;
529 error ("Can't spawn subshell");
536 #ifdef DOS_NT /* MW, Aug 1993 */
539 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
542 sh
= (char *) egetenv ("SHELL");
546 /* Use our buffer's default directory for the subshell. */
547 if (str
&& chdir ((char *) str
) != 0)
550 ignore_value (write (1, "Can't chdir\n", 12));
555 close_process_descs (); /* Close Emacs's pipes/ptys */
557 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
559 char *epwd
= getenv ("PWD");
560 char old_pwd
[MAXPATHLEN
+1+4];
562 /* If PWD is set, pass it with corrected value. */
565 strcpy (old_pwd
, epwd
);
566 if (str
[len
- 1] == '/')
568 setenv ("PWD", str
, 1);
571 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
573 putenv (old_pwd
); /* restore previous value */
575 #else /* not MSDOS */
577 /* Waits for process completion */
578 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
579 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
581 write (1, "Can't execute subshell", 22);
582 #else /* not WINDOWSNT */
583 execlp (sh
, sh
, (char *) 0);
584 ignore_value (write (1, "Can't execute subshell", 22));
586 #endif /* not WINDOWSNT */
587 #endif /* not MSDOS */
590 /* Do this now if we did not do it before. */
592 save_signal_handlers (saved_handlers
);
593 synch_process_alive
= 1;
597 wait_for_termination (pid
);
599 restore_signal_handlers (saved_handlers
);
600 synch_process_alive
= 0;
604 save_signal_handlers (struct save_signal
*saved_handlers
)
606 while (saved_handlers
->code
)
608 saved_handlers
->handler
609 = (SIGTYPE (*) (int)) signal (saved_handlers
->code
, SIG_IGN
);
615 restore_signal_handlers (struct save_signal
*saved_handlers
)
617 while (saved_handlers
->code
)
619 signal (saved_handlers
->code
, saved_handlers
->handler
);
625 /* If SIGIO is broken, don't do anything. */
642 unrequest_sigio (void)
649 int old_fcntl_flags
[MAXDESC
];
655 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
656 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
658 interrupts_deferred
= 0;
665 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
669 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
670 /* XXX Uhm, FASYNC is not used anymore here. */
671 /* XXX Yeah, but you need it for SIGIO, don't you? */
680 sigunblock (sigmask (SIGWINCH
));
682 sigunblock (sigmask (SIGIO
));
684 interrupts_deferred
= 0;
688 unrequest_sigio (void)
693 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
699 sigblock (sigmask (SIGWINCH
));
701 sigblock (sigmask (SIGIO
));
702 interrupts_deferred
= 1;
705 #else /* no FASYNC */
711 if (noninteractive
|| read_socket_hook
)
714 croak ("request_sigio");
718 unrequest_sigio (void)
720 if (noninteractive
|| read_socket_hook
)
723 croak ("unrequest_sigio");
732 /* Getting and setting emacs_tty structures. */
734 /* Set *TC to the parameters associated with the terminal FD.
735 Return zero if all's well, or -1 if we ran into an error we
736 couldn't deal with. */
738 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
740 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
742 /* We have those nifty POSIX tcmumbleattr functions. */
743 memset (&settings
->main
, 0, sizeof (settings
->main
));
744 if (tcgetattr (fd
, &settings
->main
) < 0)
748 /* We have survived the tempest. */
753 /* Set the parameters of the tty on FD according to the contents of
754 *SETTINGS. If FLUSHP is non-zero, we discard input.
755 Return 0 if all went well, and -1 if anything failed. */
758 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
760 /* Set the primary parameters - baud rate, character size, etcetera. */
763 /* We have those nifty POSIX tcmumbleattr functions.
764 William J. Smith <wjs@wiis.wang.com> writes:
765 "POSIX 1003.1 defines tcsetattr to return success if it was
766 able to perform any of the requested actions, even if some
767 of the requested actions could not be performed.
768 We must read settings back to ensure tty setup properly.
769 AIX requires this to keep tty from hanging occasionally." */
770 /* This make sure that we don't loop indefinitely in here. */
771 for (i
= 0 ; i
< 10 ; i
++)
772 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
783 memset (&new, 0, sizeof (new));
784 /* Get the current settings, and see if they're what we asked for. */
785 tcgetattr (fd
, &new);
786 /* We cannot use memcmp on the whole structure here because under
787 * aix386 the termios structure has some reserved field that may
790 if ( new.c_iflag
== settings
->main
.c_iflag
791 && new.c_oflag
== settings
->main
.c_oflag
792 && new.c_cflag
== settings
->main
.c_cflag
793 && new.c_lflag
== settings
->main
.c_lflag
794 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
801 /* We have survived the tempest. */
808 int old_fcntl_owner
[MAXDESC
];
809 #endif /* F_SETOWN */
811 /* This may also be defined in stdio,
812 but if so, this does no harm,
813 and using the same name avoids wasting the other one's space. */
816 unsigned char _sobuf
[BUFSIZ
+8];
821 /* Initialize the terminal mode on all tty devices that are currently
825 init_all_sys_modes (void)
827 struct tty_display_info
*tty
;
828 for (tty
= tty_list
; tty
; tty
= tty
->next
)
829 init_sys_modes (tty
);
832 /* Initialize the terminal mode on the given tty device. */
835 init_sys_modes (struct tty_display_info
*tty_out
)
837 struct emacs_tty tty
;
839 Vtty_erase_char
= Qnil
;
844 if (!tty_out
->output
)
845 return; /* The tty is suspended. */
847 if (! tty_out
->old_tty
)
848 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
850 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
852 tty
= *tty_out
->old_tty
;
854 #if !defined (DOS_NT)
855 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
857 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
858 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
859 #ifdef INLCR /* I'm just being cautious,
860 since I can't check how widespread INLCR is--rms. */
861 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
864 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
866 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
867 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
869 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
871 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
872 if (tty_out
->flow_control
)
874 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
876 tty
.main
.c_iflag
&= ~IXANY
;
880 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
881 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
883 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
885 if (tty_out
->meta_key
)
887 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
888 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
891 if (tty_out
->input
== stdin
)
893 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
894 /* Set up C-g for both SIGQUIT and SIGINT.
895 We don't know which we will get, but we handle both alike
896 so which one it really gives us does not matter. */
897 tty
.main
.c_cc
[VQUIT
] = quit_char
;
901 /* We normally don't get interrupt or quit signals from tty
902 devices other than our controlling terminal; therefore,
903 we must handle C-g as normal input. Unfortunately, this
904 means that the interrupt and quit feature must be
905 disabled on secondary ttys, or we would not even see the
908 Note that even though emacsclient could have special code
909 to pass SIGINT to Emacs, we should _not_ enable
910 interrupt/quit keys for emacsclient frames. This means
911 that we can't break out of loops in C code from a
912 secondary tty frame, but we can always decide what
913 display the C-g came from, which is more important from a
914 usability point of view. (Consider the case when two
915 people work together using the same Emacs instance.) */
916 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
917 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
919 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
920 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
922 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
927 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
930 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
932 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
933 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
936 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
939 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
940 #endif /* VREPRINT */
942 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
945 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
946 #endif /* VDISCARD */
948 if (tty_out
->flow_control
)
951 tty
.main
.c_cc
[VSTART
] = '\021';
954 tty
.main
.c_cc
[VSTOP
] = '\023';
960 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
963 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
968 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
969 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
970 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
971 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
972 if (tty_out
->flow_control
)
975 tty
.main
.c_cc
[VSTART
] = '\021';
978 tty
.main
.c_cc
[VSTOP
] = '\023';
981 /* Also, PTY overloads NUL and BREAK.
982 don't ignore break, but don't signal either, so it looks like NUL.
983 This really serves a purpose only if running in an XTERM window
984 or via TELNET or the like, but does no harm elsewhere. */
985 tty
.main
.c_iflag
&= ~IGNBRK
;
986 tty
.main
.c_iflag
&= ~BRKINT
;
988 #endif /* not DOS_NT */
990 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
991 if (!tty_out
->term_initted
)
992 internal_terminal_init ();
996 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
998 /* This code added to insure that, if flow-control is not to be used,
999 we have an unlocked terminal at the start. */
1002 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1005 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1008 #if !defined (DOS_NT)
1010 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1015 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1016 if (interrupt_input
)
1018 old_fcntl_owner
[fileno (tty_out
->input
)] =
1019 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1020 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1021 init_sigio (fileno (tty_out
->input
));
1023 if (gpm_tty
== tty_out
)
1025 /* Arrange for mouse events to give us SIGIO signals. */
1026 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1027 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1028 init_sigio (gpm_fd
);
1030 #endif /* HAVE_GPM */
1032 #endif /* F_GETOWN */
1033 #endif /* F_SETFL */
1036 /* This symbol is defined on recent USG systems.
1037 Someone says without this call USG won't really buffer the file
1038 even with a call to setbuf. */
1039 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1041 setbuf (tty_out
->output
, (char *) _sobuf
);
1044 if (tty_out
->terminal
->set_terminal_modes_hook
)
1045 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1047 if (!tty_out
->term_initted
)
1049 Lisp_Object tail
, frame
;
1050 FOR_EACH_FRAME (tail
, frame
)
1052 /* XXX This needs to be revised. */
1053 if (FRAME_TERMCAP_P (XFRAME (frame
))
1054 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1055 init_frame_faces (XFRAME (frame
));
1059 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1061 /* We used to call "direct_output_forward_char(0)" here,
1062 but it's not clear why, since it may not do anything anyway. */
1066 Lisp_Object tail
, frame
;
1068 FOR_EACH_FRAME (tail
, frame
)
1070 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1071 || FRAME_MSDOS_P (XFRAME (frame
)))
1072 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1073 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1077 tty_out
->term_initted
= 1;
1080 /* Return nonzero if safe to use tabs in output.
1081 At the time this is called, init_sys_modes has not been done yet. */
1084 tabs_safe_p (int fd
)
1086 struct emacs_tty etty
;
1088 emacs_get_tty (fd
, &etty
);
1091 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1092 #else /* not TABDLY */
1094 #endif /* not TABDLY */
1100 /* Get terminal size from system.
1101 Store number of lines into *HEIGHTP and width into *WIDTHP.
1102 We store 0 if there's no valid information. */
1105 get_tty_size (int fd
, int *widthp
, int *heightp
)
1111 struct winsize size
;
1113 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1114 *widthp
= *heightp
= 0;
1117 *widthp
= size
.ws_col
;
1118 *heightp
= size
.ws_row
;
1124 /* SunOS - style. */
1125 struct ttysize size
;
1127 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1128 *widthp
= *heightp
= 0;
1131 *widthp
= size
.ts_cols
;
1132 *heightp
= size
.ts_lines
;
1137 *widthp
= ScreenCols ();
1138 *heightp
= ScreenRows ();
1139 #else /* system doesn't know size */
1143 #endif /* not SunOS-style */
1144 #endif /* not BSD-style */
1147 /* Set the logical window size associated with descriptor FD
1148 to HEIGHT and WIDTH. This is used mainly with ptys. */
1151 set_window_size (int fd
, int height
, int width
)
1156 struct winsize size
;
1157 size
.ws_row
= height
;
1158 size
.ws_col
= width
;
1160 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1161 return 0; /* error */
1168 /* SunOS - style. */
1169 struct ttysize size
;
1170 size
.ts_lines
= height
;
1171 size
.ts_cols
= width
;
1173 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1179 #endif /* not SunOS-style */
1180 #endif /* not BSD-style */
1185 /* Prepare all terminal devices for exiting Emacs. */
1188 reset_all_sys_modes (void)
1190 struct tty_display_info
*tty
;
1191 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1192 reset_sys_modes (tty
);
1195 /* Prepare the terminal for closing it; move the cursor to the
1196 bottom of the frame, turn off interrupt-driven I/O, etc. */
1199 reset_sys_modes (struct tty_display_info
*tty_out
)
1206 if (!tty_out
->term_initted
)
1209 if (!tty_out
->output
)
1210 return; /* The tty is suspended. */
1212 /* Go to and clear the last line of the terminal. */
1214 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1216 /* Code adapted from tty_clear_end_of_line. */
1217 if (tty_out
->TS_clr_line
)
1219 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1222 { /* have to do it the hard way */
1224 tty_turn_off_insert (tty_out
);
1226 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1228 fputc (' ', tty_out
->output
);
1232 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1233 fflush (tty_out
->output
);
1235 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1236 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1239 /* Avoid possible loss of output when changing terminal modes. */
1240 fsync (fileno (tty_out
->output
));
1244 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1245 if (interrupt_input
)
1247 reset_sigio (fileno (tty_out
->input
));
1248 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1249 old_fcntl_owner
[fileno (tty_out
->input
)]);
1251 #endif /* F_SETOWN */
1253 fcntl (fileno (tty_out
->input
), F_SETFL
,
1254 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1256 #endif /* F_SETFL */
1258 if (tty_out
->old_tty
)
1259 while (emacs_set_tty (fileno (tty_out
->input
),
1260 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1263 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1271 /* Set up the proper status flags for use of a pty. */
1276 /* I'm told that TOICREMOTE does not mean control chars
1277 "can't be sent" but rather that they don't have
1278 input-editing or signaling effects.
1279 That should be good, because we have other ways
1280 to do those things in Emacs.
1281 However, telnet mode seems not to work on 4.2.
1282 So TIOCREMOTE is turned off now. */
1284 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1285 will hang. In particular, the "timeout" feature (which
1286 causes a read to return if there is no data available)
1287 does this. Also it is known that telnet mode will hang
1288 in such a way that Emacs must be stopped (perhaps this
1289 is the same problem).
1291 If TIOCREMOTE is turned off, then there is a bug in
1292 hp-ux which sometimes loses data. Apparently the
1293 code which blocks the master process when the internal
1294 buffer fills up does not work. Other than this,
1295 though, everything else seems to work fine.
1297 Since the latter lossage is more benign, we may as well
1298 lose that way. -- cph */
1300 #if defined(UNIX98_PTYS)
1303 ioctl (fd
, FIONBIO
, &on
);
1308 #endif /* HAVE_PTYS */
1311 #include <sys/socket.h>
1313 #endif /* HAVE_SOCKETS */
1316 #ifndef HAVE_H_ERRNO
1319 #endif /* TRY_AGAIN */
1322 init_system_name (void)
1324 #ifndef HAVE_GETHOSTNAME
1327 Vsystem_name
= build_string (uts
.nodename
);
1328 #else /* HAVE_GETHOSTNAME */
1329 unsigned int hostname_size
= 256;
1330 char *hostname
= (char *) alloca (hostname_size
);
1332 /* Try to get the host name; if the buffer is too short, try
1333 again. Apparently, the only indication gethostname gives of
1334 whether the buffer was large enough is the presence or absence
1335 of a '\0' in the string. Eech. */
1338 gethostname (hostname
, hostname_size
- 1);
1339 hostname
[hostname_size
- 1] = '\0';
1341 /* Was the buffer large enough for the '\0'? */
1342 if (strlen (hostname
) < hostname_size
- 1)
1345 hostname_size
<<= 1;
1346 hostname
= (char *) alloca (hostname_size
);
1349 /* Turn the hostname into the official, fully-qualified hostname.
1350 Don't do this if we're going to dump; this can confuse system
1351 libraries on some machines and make the dumped emacs core dump. */
1354 #endif /* not CANNOT_DUMP */
1355 if (! strchr (hostname
, '.'))
1358 #ifdef HAVE_GETADDRINFO
1359 struct addrinfo
*res
;
1360 struct addrinfo hints
;
1363 memset (&hints
, 0, sizeof (hints
));
1364 hints
.ai_socktype
= SOCK_STREAM
;
1365 hints
.ai_flags
= AI_CANONNAME
;
1367 for (count
= 0;; count
++)
1369 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1370 || ret
!= EAI_AGAIN
)
1375 Fsleep_for (make_number (1), Qnil
);
1380 struct addrinfo
*it
= res
;
1383 char *fqdn
= it
->ai_canonname
;
1384 if (fqdn
&& strchr (fqdn
, '.')
1385 && strcmp (fqdn
, "localhost.localdomain") != 0)
1391 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1392 strcpy (hostname
, it
->ai_canonname
);
1396 #else /* !HAVE_GETADDRINFO */
1398 for (count
= 0;; count
++)
1404 hp
= gethostbyname (hostname
);
1406 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1413 Fsleep_for (make_number (1), Qnil
);
1418 char *fqdn
= (char *) hp
->h_name
;
1420 if (!strchr (fqdn
, '.'))
1422 /* We still don't have a fully qualified domain name.
1423 Try to find one in the list of alternate names */
1424 char **alias
= hp
->h_aliases
;
1426 && (!strchr (*alias
, '.')
1427 || !strcmp (*alias
, "localhost.localdomain")))
1434 #endif /* !HAVE_GETADDRINFO */
1436 #endif /* HAVE_SOCKETS */
1437 Vsystem_name
= build_string (hostname
);
1438 #endif /* HAVE_GETHOSTNAME */
1441 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1442 if (*p
== ' ' || *p
== '\t')
1447 /* POSIX signals support - DJB */
1448 /* Anyone with POSIX signals should have ANSI C declarations */
1450 sigset_t empty_mask
, full_mask
;
1455 sys_signal (int signal_number
, signal_handler_t action
)
1457 struct sigaction new_action
, old_action
;
1458 sigemptyset (&new_action
.sa_mask
);
1459 new_action
.sa_handler
= action
;
1460 new_action
.sa_flags
= 0;
1461 #if defined (SA_RESTART)
1462 /* Emacs mostly works better with restartable system services. If this
1463 flag exists, we probably want to turn it on here.
1464 However, on some systems this resets the timeout of `select'
1465 which means that `select' never finishes if it keeps getting signals.
1466 BROKEN_SA_RESTART is defined on those systems. */
1467 /* It's not clear why the comment above says "mostly works better". --Stef
1468 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
1469 for pending input so we need long-running syscalls to be interrupted
1470 after a signal that sets the interrupt_input_pending flag. */
1471 /* Non-interactive keyboard input goes through stdio, where we always
1472 want restartable system calls. */
1473 # if defined (BROKEN_SA_RESTART) || defined(SYNC_INPUT)
1476 new_action
.sa_flags
= SA_RESTART
;
1478 sigaction (signal_number
, &new_action
, &old_action
);
1479 return (old_action
.sa_handler
);
1482 #endif /* WINDOWSNT */
1485 /* If we're compiling with GCC, we don't need this function, since it
1486 can be written as a macro. */
1488 sys_sigmask (int sig
)
1491 sigemptyset (&mask
);
1492 sigaddset (&mask
, sig
);
1497 /* I'd like to have these guys return pointers to the mask storage in here,
1498 but there'd be trouble if the code was saving multiple masks. I'll be
1499 safe and pass the structure. It normally won't be more than 2 bytes
1503 sys_sigblock (sigset_t new_mask
)
1506 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
1511 sys_sigunblock (sigset_t new_mask
)
1514 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
1519 sys_sigsetmask (sigset_t new_mask
)
1522 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
1527 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1528 static char *my_sys_siglist
[NSIG
];
1532 # define sys_siglist my_sys_siglist
1538 sigemptyset (&empty_mask
);
1539 sigfillset (&full_mask
);
1541 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
1545 sys_siglist
[SIGABRT
] = "Aborted";
1548 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1551 sys_siglist
[SIGALRM
] = "Alarm clock";
1554 sys_siglist
[SIGBUS
] = "Bus error";
1557 sys_siglist
[SIGCLD
] = "Child status changed";
1560 sys_siglist
[SIGCHLD
] = "Child status changed";
1563 sys_siglist
[SIGCONT
] = "Continued";
1566 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1569 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1572 sys_siglist
[SIGEMT
] = "Emulation trap";
1575 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1578 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1581 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1584 sys_siglist
[SIGHUP
] = "Hangup";
1587 sys_siglist
[SIGILL
] = "Illegal instruction";
1590 sys_siglist
[SIGINT
] = "Interrupt";
1593 sys_siglist
[SIGIO
] = "I/O possible";
1596 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1599 sys_siglist
[SIGIOT
] = "IOT trap";
1602 sys_siglist
[SIGKILL
] = "Killed";
1605 sys_siglist
[SIGLOST
] = "Resource lost";
1608 sys_siglist
[SIGLWP
] = "SIGLWP";
1611 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1614 sys_siglist
[SIGWIND
] = "SIGPHONE";
1617 sys_siglist
[SIGPIPE
] = "Broken pipe";
1620 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1623 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1626 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1629 sys_siglist
[SIGPWR
] = "Power-fail restart";
1632 sys_siglist
[SIGQUIT
] = "Quit";
1635 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
1638 sys_siglist
[SIGSAK
] = "Secure attention";
1641 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1644 sys_siglist
[SIGSOUND
] = "Sound completed";
1647 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1650 sys_siglist
[SIGSTP
] = "Stopped (user)";
1653 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1656 sys_siglist
[SIGTERM
] = "Terminated";
1659 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1662 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1665 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1668 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1671 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1674 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1677 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1680 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1683 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1686 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1689 sys_siglist
[SIGWINCH
] = "Window size changed";
1692 sys_siglist
[SIGWIND
] = "SIGWIND";
1695 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1698 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1701 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
1710 /* Figure out how many bits the system's random number generator uses.
1711 `random' and `lrand48' are assumed to return 31 usable bits.
1712 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1713 so we'll shift it and treat it like the 15-bit USG `rand'. */
1717 # define RAND_BITS 31
1718 # else /* !HAVE_RANDOM */
1719 # ifdef HAVE_LRAND48
1720 # define RAND_BITS 31
1721 # define random lrand48
1722 # else /* !HAVE_LRAND48 */
1723 # define RAND_BITS 15
1724 # if RAND_MAX == 32767
1725 # define random rand
1726 # else /* RAND_MAX != 32767 */
1727 # if RAND_MAX == 2147483647
1728 # define random() (rand () >> 16)
1729 # else /* RAND_MAX != 2147483647 */
1731 # define random rand
1733 # define random() (rand () >> 16)
1735 # endif /* RAND_MAX != 2147483647 */
1736 # endif /* RAND_MAX != 32767 */
1737 # endif /* !HAVE_LRAND48 */
1738 # endif /* !HAVE_RANDOM */
1739 #endif /* !RAND_BITS */
1742 seed_random (long int arg
)
1745 srandom ((unsigned int)arg
);
1747 # ifdef HAVE_LRAND48
1750 srand ((unsigned int)arg
);
1756 * Build a full Emacs-sized word out of whatever we've got.
1757 * This suffices even for a 64-bit architecture with a 15-bit rand.
1762 long val
= random ();
1763 #if VALBITS > RAND_BITS
1764 val
= (val
<< RAND_BITS
) ^ random ();
1765 #if VALBITS > 2*RAND_BITS
1766 val
= (val
<< RAND_BITS
) ^ random ();
1767 #if VALBITS > 3*RAND_BITS
1768 val
= (val
<< RAND_BITS
) ^ random ();
1769 #if VALBITS > 4*RAND_BITS
1770 val
= (val
<< RAND_BITS
) ^ random ();
1771 #endif /* need at least 5 */
1772 #endif /* need at least 4 */
1773 #endif /* need at least 3 */
1774 #endif /* need at least 2 */
1775 return val
& ((1L << VALBITS
) - 1);
1778 #ifndef HAVE_STRERROR
1784 extern char *sys_errlist
[];
1785 extern int sys_nerr
;
1787 if (errnum
>= 0 && errnum
< sys_nerr
)
1788 return sys_errlist
[errnum
];
1789 return (char *) "Unknown error";
1791 #endif /* not WINDOWSNT */
1792 #endif /* ! HAVE_STRERROR */
1795 emacs_open (const char *path
, int oflag
, int mode
)
1797 register int rtnval
;
1799 while ((rtnval
= open (path
, oflag
, mode
)) == -1
1800 && (errno
== EINTR
))
1806 emacs_close (int fd
)
1809 register int rtnval
;
1811 while ((rtnval
= close (fd
)) == -1
1812 && (errno
== EINTR
))
1815 /* If close is interrupted SunOS 4.1 may or may not have closed the
1816 file descriptor. If it did the second close will fail with
1817 errno = EBADF. That means we have succeeded. */
1818 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
1825 emacs_read (int fildes
, char *buf
, unsigned int nbyte
)
1827 register int rtnval
;
1829 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
1830 && (errno
== EINTR
))
1836 emacs_write (int fildes
, const char *buf
, unsigned int nbyte
)
1838 register int rtnval
, bytes_written
;
1844 rtnval
= write (fildes
, buf
, nbyte
);
1851 /* I originally used `QUIT' but that might causes files to
1852 be truncated if you hit C-g in the middle of it. --Stef */
1853 process_pending_signals ();
1858 return (bytes_written
? bytes_written
: -1);
1863 bytes_written
+= rtnval
;
1865 return (bytes_written
);
1870 * All of the following are for USG.
1872 * On USG systems the system calls are INTERRUPTIBLE by signals
1873 * that the user program has elected to catch. Thus the system call
1874 * must be retried in these cases. To handle this without massive
1875 * changes in the source code, we remap the standard system call names
1876 * to names for our own functions in sysdep.c that do the system call
1877 * with retries. Actually, for portability reasons, it is good
1878 * programming practice, as this example shows, to limit all actual
1879 * system calls to a single occurrence in the source. Sure, this
1880 * adds an extra level of function call overhead but it is almost
1881 * always negligible. Fred Fish, Unisoft Systems Inc.
1885 * Warning, this function may not duplicate 4.2 action properly
1886 * under error conditions.
1890 /* In 4.1, param.h fails to define this. */
1891 #define MAXPATHLEN 1024
1897 getwd (char *pathname
)
1899 char *npath
, *spath
;
1900 extern char *getcwd (char *, size_t);
1902 BLOCK_INPUT
; /* getcwd uses malloc */
1903 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
1909 /* On Altos 3068, getcwd can return @hostname/dir, so discard
1910 up to first slash. Should be harmless on other systems. */
1911 while (*npath
&& *npath
!= '/')
1913 strcpy (pathname
, npath
);
1914 free (spath
); /* getcwd uses malloc */
1919 #endif /* HAVE_GETWD */
1922 * Emulate rename using unlink/link. Note that this is
1923 * only partially correct. Also, doesn't enforce restriction
1924 * that files be of same type (regular->regular, dir->dir, etc).
1930 rename (const char *from
, const char *to
)
1932 if (access (from
, 0) == 0)
1935 if (link (from
, to
) == 0)
1936 if (unlink (from
) == 0)
1945 #if defined(HPUX) && !defined(HAVE_PERROR)
1947 /* HPUX curses library references perror, but as far as we know
1948 it won't be called. Anyway this definition will do for now. */
1954 #endif /* HPUX and not HAVE_PERROR */
1959 * Emulate BSD dup2. First close newd if it already exists.
1960 * Then, attempt to dup oldd. If not successful, call dup2 recursively
1961 * until we are, then close the unsuccessful ones.
1965 dup2 (int oldd
, int newd
)
1967 register int fd
, ret
;
1972 return fcntl (oldd
, F_DUPFD
, newd
);
1979 ret
= dup2 (old
,new);
1985 #endif /* not HAVE_DUP2 */
1988 * Gettimeofday. Simulate as much as possible. Only accurate
1989 * to nearest second. Emacs doesn't use tzp so ignore it for now.
1990 * Only needed when subprocesses are defined.
1993 #ifndef HAVE_GETTIMEOFDAY
1997 gettimeofday (struct timeval
*tp
, struct timezone
*tzp
)
1999 extern long time (long);
2001 tp
->tv_sec
= time ((long *)0);
2004 tzp
->tz_minuteswest
= -1;
2009 #endif /* !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL */
2012 * This function will go away as soon as all the stubs fixed. (fnf)
2016 croak (char *badfunc
)
2018 printf ("%s not yet implemented\r\n", badfunc
);
2019 reset_all_sys_modes ();
2025 /* Directory routines for systems that don't have them. */
2027 #ifdef HAVE_DIRENT_H
2031 #if !defined (HAVE_CLOSEDIR)
2034 closedir (DIR *dirp
/* stream from opendir */)
2038 rtnval
= emacs_close (dirp
->dd_fd
);
2039 xfree ((char *) dirp
);
2043 #endif /* not HAVE_CLOSEDIR */
2044 #endif /* HAVE_DIRENT_H */
2048 set_file_times (const char *filename
, EMACS_TIME atime
, EMACS_TIME mtime
)
2051 struct timeval tv
[2];
2054 return utimes (filename
, tv
);
2055 #else /* not HAVE_UTIMES */
2057 utb
.actime
= EMACS_SECS (atime
);
2058 utb
.modtime
= EMACS_SECS (mtime
);
2059 return utime (filename
, &utb
);
2060 #endif /* not HAVE_UTIMES */
2063 /* mkdir and rmdir functions, for systems which don't have them. */
2067 * Written by Robert Rother, Mariah Corporation, August 1985.
2069 * If you want it, it's yours. All I ask in return is that if you
2070 * figure out how to do this in a Bourne Shell script you send me
2072 * sdcsvax!rmr or rmr@uscd
2074 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
2075 * subroutine. 11Mar86; hoptoad!gnu
2077 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
2078 * subroutine didn't return EEXIST. It does now.
2085 mkdir (char *dpath
, int dmode
)
2087 int cpid
, status
, fd
;
2088 struct stat statbuf
;
2090 if (stat (dpath
, &statbuf
) == 0)
2092 errno
= EEXIST
; /* Stat worked, so it already exists */
2096 /* If stat fails for a reason other than non-existence, return error */
2097 if (errno
!= ENOENT
)
2100 synch_process_alive
= 1;
2101 switch (cpid
= fork ())
2104 case -1: /* Error in fork */
2105 return (-1); /* Errno is set already */
2107 case 0: /* Child process */
2109 * Cheap hack to set mode of new directory. Since this
2110 * child process is going away anyway, we zap its umask.
2111 * FIXME, this won't suffice to set SUID, SGID, etc. on this
2112 * directory. Does anybody care?
2114 status
= umask (0); /* Get current umask */
2115 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
2116 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2123 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
2124 _exit (-1); /* Can't exec /bin/mkdir */
2126 default: /* Parent process */
2127 wait_for_termination (cpid
);
2130 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2131 || synch_process_termsig
!= 0)
2133 errno
= EIO
; /* We don't know why, but */
2134 return -1; /* /bin/mkdir failed */
2139 #endif /* not HAVE_MKDIR */
2145 int cpid
, status
, fd
;
2146 struct stat statbuf
;
2148 if (stat (dpath
, &statbuf
) != 0)
2150 /* Stat just set errno. We don't have to */
2154 synch_process_alive
= 1;
2155 switch (cpid
= fork ())
2158 case -1: /* Error in fork */
2159 return (-1); /* Errno is set already */
2161 case 0: /* Child process */
2162 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
2169 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
2170 _exit (-1); /* Can't exec /bin/rmdir */
2172 default: /* Parent process */
2173 wait_for_termination (cpid
);
2176 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
2177 || synch_process_termsig
!= 0)
2179 errno
= EIO
; /* We don't know why, but */
2180 return -1; /* /bin/rmdir failed */
2185 #endif /* !HAVE_RMDIR */
2190 memset (void *b
, int n
, size_t length
)
2192 unsigned char *p
= b
;
2193 while (length
-- > 0)
2197 #endif /* !HAVE_MEMSET */
2201 memcpy (void *b1
, void *b2
, size_t length
)
2203 unsigned char *p1
= b1
, *p2
= b2
;
2204 while (length
-- > 0)
2208 #endif /* !HAVE_MEMCPY */
2210 #ifndef HAVE_MEMMOVE
2212 memmove (void *b1
, void *b2
, size_t length
)
2214 unsigned char *p1
= b1
, *p2
= b2
;
2215 if (p1
< p2
|| p1
>= p2
+ length
)
2216 while (length
-- > 0)
2222 while (length
-- > 0)
2227 #endif /* !HAVE_MEMCPY */
2231 memcmp (void *b1
, void *b2
, size_t length
)
2233 unsigned char *p1
= b1
, *p2
= b2
;
2234 while (length
-- > 0)
2236 return p1
[-1] < p2
[-1] ? -1 : 1;
2239 #endif /* !HAVE_MEMCMP */
2241 #ifndef HAVE_STRSIGNAL
2243 strsignal (int code
)
2247 if (0 <= code
&& code
< NSIG
)
2249 /* Cast to suppress warning if the table has const char *. */
2250 signame
= (char *) sys_siglist
[code
];
2255 #endif /* HAVE_STRSIGNAL */
2258 /* For make-serial-process */
2260 serial_open (char *port
)
2264 fd
= emacs_open ((char*) port
,
2277 error ("Could not open %s: %s",
2278 port
, emacs_strerror (errno
));
2281 ioctl (fd
, TIOCEXCL
, (char *) 0);
2287 #if !defined (HAVE_CFMAKERAW)
2288 /* Workaround for targets which are missing cfmakeraw. */
2289 /* Pasted from man page. */
2291 cfmakeraw (struct termios
*termios_p
)
2293 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2294 termios_p
->c_oflag
&= ~OPOST
;
2295 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2296 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2297 termios_p
->c_cflag
|= CS8
;
2299 #endif /* !defined (HAVE_CFMAKERAW */
2301 #if !defined (HAVE_CFSETSPEED)
2302 /* Workaround for targets which are missing cfsetspeed. */
2304 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2306 return (cfsetispeed (termios_p
, vitesse
)
2307 + cfsetospeed (termios_p
, vitesse
));
2311 /* For serial-process-configure */
2313 serial_configure (struct Lisp_Process
*p
,
2314 Lisp_Object contact
)
2316 Lisp_Object childp2
= Qnil
;
2317 Lisp_Object tem
= Qnil
;
2318 struct termios attr
;
2320 char summary
[4] = "???"; /* This usually becomes "8N1". */
2322 childp2
= Fcopy_sequence (p
->childp
);
2324 /* Read port attributes and prepare default configuration. */
2325 err
= tcgetattr (p
->outfd
, &attr
);
2327 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2329 #if defined (CLOCAL)
2330 attr
.c_cflag
|= CLOCAL
;
2333 attr
.c_cflag
|= CREAD
;
2336 /* Configure speed. */
2337 if (!NILP (Fplist_member (contact
, QCspeed
)))
2338 tem
= Fplist_get (contact
, QCspeed
);
2340 tem
= Fplist_get (p
->childp
, QCspeed
);
2342 err
= cfsetspeed (&attr
, XINT (tem
));
2344 error ("cfsetspeed(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
2345 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2347 /* Configure bytesize. */
2348 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2349 tem
= Fplist_get (contact
, QCbytesize
);
2351 tem
= Fplist_get (p
->childp
, QCbytesize
);
2353 tem
= make_number (8);
2355 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2356 error (":bytesize must be nil (8), 7, or 8");
2357 summary
[0] = XINT (tem
) + '0';
2358 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2359 attr
.c_cflag
&= ~CSIZE
;
2360 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2362 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2363 if (XINT (tem
) != 8)
2364 error ("Bytesize cannot be changed");
2366 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2368 /* Configure parity. */
2369 if (!NILP (Fplist_member (contact
, QCparity
)))
2370 tem
= Fplist_get (contact
, QCparity
);
2372 tem
= Fplist_get (p
->childp
, QCparity
);
2373 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2374 error (":parity must be nil (no parity), `even', or `odd'");
2375 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2376 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2377 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2382 else if (EQ (tem
, Qeven
))
2385 attr
.c_cflag
|= PARENB
;
2386 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2388 else if (EQ (tem
, Qodd
))
2391 attr
.c_cflag
|= (PARENB
| PARODD
);
2392 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2395 /* Don't error on no parity, which should be set by cfmakeraw. */
2397 error ("Parity cannot be configured");
2399 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2401 /* Configure stopbits. */
2402 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2403 tem
= Fplist_get (contact
, QCstopbits
);
2405 tem
= Fplist_get (p
->childp
, QCstopbits
);
2407 tem
= make_number (1);
2409 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2410 error (":stopbits must be nil (1 stopbit), 1, or 2");
2411 summary
[2] = XINT (tem
) + '0';
2412 #if defined (CSTOPB)
2413 attr
.c_cflag
&= ~CSTOPB
;
2414 if (XINT (tem
) == 2)
2415 attr
.c_cflag
|= CSTOPB
;
2417 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2418 if (XINT (tem
) != 1)
2419 error ("Stopbits cannot be configured");
2421 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2423 /* Configure flowcontrol. */
2424 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2425 tem
= Fplist_get (contact
, QCflowcontrol
);
2427 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2428 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2429 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2430 #if defined (CRTSCTS)
2431 attr
.c_cflag
&= ~CRTSCTS
;
2433 #if defined (CNEW_RTSCTS)
2434 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2436 #if defined (IXON) && defined (IXOFF)
2437 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2441 /* Already configured. */
2443 else if (EQ (tem
, Qhw
))
2445 #if defined (CRTSCTS)
2446 attr
.c_cflag
|= CRTSCTS
;
2447 #elif defined (CNEW_RTSCTS)
2448 attr
.c_cflag
|= CNEW_RTSCTS
;
2450 error ("Hardware flowcontrol (RTS/CTS) not supported");
2453 else if (EQ (tem
, Qsw
))
2455 #if defined (IXON) && defined (IXOFF)
2456 attr
.c_iflag
|= (IXON
| IXOFF
);
2458 error ("Software flowcontrol (XON/XOFF) not supported");
2461 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2463 /* Activate configuration. */
2464 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2466 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2468 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2469 p
->childp
= childp2
;
2472 #endif /* not DOS_NT */
2474 /* System depended enumeration of and access to system processes a-la ps(1). */
2478 /* Process enumeration and access via /proc. */
2481 list_system_processes (void)
2483 Lisp_Object procdir
, match
, proclist
, next
;
2484 struct gcpro gcpro1
, gcpro2
;
2485 register Lisp_Object tail
;
2487 GCPRO2 (procdir
, match
);
2488 /* For every process on the system, there's a directory in the
2489 "/proc" pseudo-directory whose name is the numeric ID of that
2491 procdir
= build_string ("/proc");
2492 match
= build_string ("[0-9]+");
2493 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2495 /* `proclist' gives process IDs as strings. Destructively convert
2496 each string into a number. */
2497 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2500 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2504 /* directory_files_internal returns the files in reverse order; undo
2506 proclist
= Fnreverse (proclist
);
2510 /* The WINDOWSNT implementation is in w32.c.
2511 The MSDOS implementation is in dosfns.c. */
2512 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2515 list_system_processes (void)
2520 #endif /* !defined (WINDOWSNT) */
2524 time_from_jiffies (unsigned long long tval
, long hz
,
2525 time_t *sec
, unsigned *usec
)
2527 unsigned long long ullsec
;
2531 tval
-= ullsec
* hz
;
2532 /* Careful: if HZ > 1 million, then integer division by it yields zero. */
2534 *usec
= tval
* 1000000 / hz
;
2536 *usec
= tval
/ (hz
/ 1000000);
2540 ltime_from_jiffies (unsigned long long tval
, long hz
)
2545 time_from_jiffies (tval
, hz
, &sec
, &usec
);
2547 return list3 (make_number ((sec
>> 16) & 0xffff),
2548 make_number (sec
& 0xffff),
2549 make_number (usec
));
2553 get_up_time (time_t *sec
, unsigned *usec
)
2560 fup
= fopen ("/proc/uptime", "r");
2564 double uptime
, idletime
;
2566 /* The numbers in /proc/uptime use C-locale decimal point, but
2567 we already set ourselves to the C locale (see `fixup_locale'
2569 if (2 <= fscanf (fup
, "%lf %lf", &uptime
, &idletime
))
2572 *usec
= (uptime
- *sec
) * 1000000;
2579 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2580 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2583 procfs_ttyname (int rdev
)
2586 char name
[PATH_MAX
];
2589 fdev
= fopen ("/proc/tty/drivers", "r");
2594 unsigned long minor_beg
, minor_end
;
2595 char minor
[25]; /* 2 32-bit numbers + dash */
2598 while (!feof (fdev
) && !ferror (fdev
))
2600 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2601 && major
== MAJOR (rdev
))
2603 minor_beg
= strtoul (minor
, &endp
, 0);
2605 minor_end
= minor_beg
;
2606 else if (*endp
== '-')
2607 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2611 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2613 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2621 return build_string (name
);
2624 static unsigned long
2625 procfs_get_total_memory (void)
2628 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2631 fmem
= fopen ("/proc/meminfo", "r");
2635 unsigned long entry_value
;
2636 char entry_name
[20]; /* the longest I saw is 13+1 */
2638 while (!feof (fmem
) && !ferror (fmem
))
2640 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2641 && strcmp (entry_name
, "MemTotal:") == 0)
2643 retval
= entry_value
;
2654 system_process_attributes (Lisp_Object pid
)
2656 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2660 long clocks_per_sec
;
2662 char procbuf
[1025], *p
, *q
;
2665 const char *cmd
= NULL
;
2666 char *cmdline
= NULL
;
2667 size_t cmdsize
= 0, cmdline_size
;
2669 int proc_id
, ppid
, uid
, gid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2670 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2671 long priority
, niceness
, rss
;
2672 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2675 EMACS_TIME tnow
, tstart
, tboot
, telapsed
;
2677 Lisp_Object attrs
= Qnil
;
2678 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2679 struct gcpro gcpro1
, gcpro2
;
2680 EMACS_INT uid_eint
, gid_eint
;
2682 CHECK_NUMBER_OR_FLOAT (pid
);
2683 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2684 sprintf (procfn
, "/proc/%u", proc_id
);
2685 if (stat (procfn
, &st
) < 0)
2688 GCPRO2 (attrs
, decoded_cmd
);
2692 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2694 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2696 pw
= getpwuid (uid
);
2699 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2703 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2705 gr
= getgrgid (gid
);
2708 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2710 strcpy (fn
, procfn
);
2711 procfn_end
= fn
+ strlen (fn
);
2712 strcpy (procfn_end
, "/stat");
2713 fd
= emacs_open (fn
, O_RDONLY
, 0);
2714 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2716 procbuf
[nread
] = '\0';
2719 p
= strchr (p
, '(');
2722 q
= strrchr (p
+ 1, ')');
2737 /* Command name is encoded in locale-coding-system; decode it. */
2738 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2739 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2740 Vlocale_coding_system
, 0);
2741 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2745 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2747 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2748 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2749 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2750 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2751 &u_time
, &s_time
, &cutime
, &cstime
,
2752 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2757 state_str
[1] = '\0';
2758 tem
= build_string (state_str
);
2759 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2761 /* Stops GCC whining about limited range of data type. */
2766 thcount_eint
= thcount
;
2767 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2768 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2769 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2770 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2771 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2772 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2773 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2774 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2775 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2776 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2777 if (clocks_per_sec
< 0)
2778 clocks_per_sec
= 100;
2779 attrs
= Fcons (Fcons (Qutime
,
2780 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2782 attrs
= Fcons (Fcons (Qstime
,
2783 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2785 attrs
= Fcons (Fcons (Qtime
,
2786 ltime_from_jiffies (s_time
+ u_time
,
2789 attrs
= Fcons (Fcons (Qcutime
,
2790 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2792 attrs
= Fcons (Fcons (Qcstime
,
2793 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2795 attrs
= Fcons (Fcons (Qctime
,
2796 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2798 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2799 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2800 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2801 EMACS_GET_TIME (tnow
);
2802 get_up_time (&sec
, &usec
);
2803 EMACS_SET_SECS (telapsed
, sec
);
2804 EMACS_SET_USECS (telapsed
, usec
);
2805 EMACS_SUB_TIME (tboot
, tnow
, telapsed
);
2806 time_from_jiffies (start
, clocks_per_sec
, &sec
, &usec
);
2807 EMACS_SET_SECS (tstart
, sec
);
2808 EMACS_SET_USECS (tstart
, usec
);
2809 EMACS_ADD_TIME (tstart
, tboot
, tstart
);
2810 attrs
= Fcons (Fcons (Qstart
,
2812 ((EMACS_SECS (tstart
) >> 16) & 0xffff),
2814 (EMACS_SECS (tstart
) & 0xffff),
2816 (EMACS_USECS (tstart
)))),
2818 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2819 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2820 EMACS_SUB_TIME (telapsed
, tnow
, tstart
);
2821 attrs
= Fcons (Fcons (Qetime
,
2823 ((EMACS_SECS (telapsed
) >> 16) & 0xffff),
2825 (EMACS_SECS (telapsed
) & 0xffff),
2827 (EMACS_USECS (telapsed
)))),
2829 time_from_jiffies (u_time
+ s_time
, clocks_per_sec
, &sec
, &usec
);
2830 pcpu
= (sec
+ usec
/ 1000000.0) / (EMACS_SECS (telapsed
) + EMACS_USECS (telapsed
) / 1000000.0);
2833 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2834 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2837 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2844 strcpy (procfn_end
, "/cmdline");
2845 fd
= emacs_open (fn
, O_RDONLY
, 0);
2849 for (cmdline_size
= 0; emacs_read (fd
, &ch
, 1) == 1; cmdline_size
++)
2852 if (isspace (c
) || c
== '\\')
2853 cmdline_size
++; /* for later quoting, see below */
2857 cmdline
= xmalloc (cmdline_size
+ 1);
2858 lseek (fd
, 0L, SEEK_SET
);
2860 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2861 cmdline
[nread
++] = '\0';
2864 /* Assigning zero to `nread' makes us skip the following
2865 two loops, assign zero to cmdline_size, and enter the
2866 following `if' clause that handles unknown command
2870 /* We don't want trailing null characters. */
2871 for (p
= cmdline
+ nread
- 1; p
> cmdline
&& !*p
; p
--)
2873 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2875 /* Escape-quote whitespace and backslashes. */
2876 if (isspace (*p
) || *p
== '\\')
2878 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2882 else if (*p
== '\0')
2885 cmdline_size
= nread
;
2892 cmdsize
= strlen (cmd
);
2893 cmdline_size
= cmdsize
+ 2;
2894 cmdline
= xmalloc (cmdline_size
+ 1);
2895 strcpy (cmdline
, "[");
2896 strcat (strncat (cmdline
, cmd
, cmdsize
), "]");
2899 /* Command line is encoded in locale-coding-system; decode it. */
2900 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2901 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2902 Vlocale_coding_system
, 0);
2904 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2911 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2913 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2914 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2915 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2916 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2917 #undef _FILE_OFFSET_BITS
2919 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2924 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2925 #define _FILE_OFFSET_BITS 64
2926 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2929 system_process_attributes (Lisp_Object pid
)
2931 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2936 struct psinfo pinfo
;
2939 int proc_id
, uid
, gid
;
2940 Lisp_Object attrs
= Qnil
;
2941 Lisp_Object decoded_cmd
, tem
;
2942 struct gcpro gcpro1
, gcpro2
;
2943 EMACS_INT uid_eint
, gid_eint
;
2945 CHECK_NUMBER_OR_FLOAT (pid
);
2946 proc_id
= FLOATP (pid
) ? XFLOAT_DATA (pid
) : XINT (pid
);
2947 sprintf (procfn
, "/proc/%u", proc_id
);
2948 if (stat (procfn
, &st
) < 0)
2951 GCPRO2 (attrs
, decoded_cmd
);
2955 /* Use of EMACS_INT stops GCC whining about limited range of data type. */
2957 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid_eint
)), attrs
);
2959 pw
= getpwuid (uid
);
2962 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2966 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid_eint
)), attrs
);
2968 gr
= getgrgid (gid
);
2971 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2973 strcpy (fn
, procfn
);
2974 procfn_end
= fn
+ strlen (fn
);
2975 strcpy (procfn_end
, "/psinfo");
2976 fd
= emacs_open (fn
, O_RDONLY
, 0);
2978 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
2980 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
2981 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
2982 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
2986 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
2987 state_str
[1] = '\0';
2988 tem
= build_string (state_str
);
2989 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2992 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
2993 need to get a string from it. */
2995 /* FIXME: missing: Qtpgid */
3007 Are they available? */
3009 attrs
= Fcons (Fcons (Qtime
,
3010 list3 (make_number (pinfo
.pr_time
.tv_sec
>> 16),
3011 make_number (pinfo
.pr_time
.tv_sec
& 0xffff),
3012 make_number (pinfo
.pr_time
.tv_nsec
))),
3015 attrs
= Fcons (Fcons (Qctime
,
3016 list3 (make_number (pinfo
.pr_ctime
.tv_sec
>> 16),
3017 make_number (pinfo
.pr_ctime
.tv_sec
& 0xffff),
3018 make_number (pinfo
.pr_ctime
.tv_nsec
))),
3021 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3022 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3023 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3025 attrs
= Fcons (Fcons (Qstart
,
3026 list3 (make_number (pinfo
.pr_start
.tv_sec
>> 16),
3027 make_number (pinfo
.pr_start
.tv_sec
& 0xffff),
3028 make_number (pinfo
.pr_start
.tv_nsec
))),
3030 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3031 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3033 /* pr_pctcpu and pr_pctmem are encoded as a fixed point 16 bit number in [0 ... 1]. */
3034 attrs
= Fcons (Fcons (Qpcpu
, (pinfo
.pr_pctcpu
* 100.0) / (double)0x8000), attrs
);
3035 attrs
= Fcons (Fcons (Qpmem
, (pinfo
.pr_pctmem
* 100.0) / (double)0x8000), attrs
);
3038 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3039 strlen (pinfo
.pr_fname
)),
3040 Vlocale_coding_system
, 0);
3041 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3043 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3044 strlen (pinfo
.pr_psargs
)),
3045 Vlocale_coding_system
, 0);
3046 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3056 /* The WINDOWSNT implementation is in w32.c.
3057 The MSDOS implementation is in dosfns.c. */
3058 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3061 system_process_attributes (Lisp_Object pid
)
3066 #endif /* !defined (WINDOWSNT) */