1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
34 /* Including stdlib.h isn't necessarily enough to get srandom
35 declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
37 #if 0 /* Don't prototype srandom; it takes an unsigned argument on
38 some systems, and an unsigned long on others, like FreeBSD
40 extern void srandom
P_ ((unsigned int));
44 /* The w32 build defines select stuff in w32.h, which is included by
45 sys/select.h (included below). */
47 #include "sysselect.h"
50 #include "blockinput.h"
54 #define write sys_write
59 #endif /* not WINDOWSNT */
61 /* Does anyone other than VMS need this? */
63 #define sys_fwrite fwrite
68 #include <sys/types.h>
73 #if !defined (USG) || defined (BSD_PGRPS)
75 #define setpgrp setpgid
79 /* Get SI_SRPC_DOMAIN, if it is available. */
80 #ifdef HAVE_SYS_SYSTEMINFO_H
81 #include <sys/systeminfo.h>
84 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
88 #include <sys/param.h>
92 extern unsigned start
__asm__ ("start");
114 #include <sys/file.h>
122 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
126 #include <sys/file.h>
134 #include <sys/ioctl.h>
140 #ifdef BROKEN_TIOCGWINSZ
146 #include <sys/utsname.h>
148 #if defined (TIOCGWINSZ)
150 #include <sys/sioctl.h>
153 #include <sys/stream.h>
154 #include <sys/ptem.h>
156 #endif /* TIOCGWINSZ */
159 extern int quit_char
;
161 #include "keyboard.h"
164 #include "termhooks.h"
165 #include "termchar.h"
166 #include "termopts.h"
167 #include "dispextern.h"
169 #include "cm.h" /* for reset_sys_modes */
173 /* In process.h which conflicts with the local copy. */
175 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
176 int _CRTAPI1
_getpid (void);
177 extern char *getwd (char *);
180 #ifdef NONSYSTEM_DIR_LIBRARY
182 #endif /* NONSYSTEM_DIR_LIBRARY */
184 #include "syssignal.h"
191 #ifndef HAVE_STRUCT_UTIMBUF
192 /* We want to use utime rather than utimes, but we couldn't find the
193 structure declaration. We'll use the traditional one. */
201 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
207 #define LNOFLSH 0100000
210 static int baud_convert
[] =
215 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
216 1800, 2400, 4800, 9600, 19200, 38400
223 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
225 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
233 void croak
P_ ((char *)) NO_RETURN
;
236 void hft_init
P_ ((struct tty_display_info
*));
237 void hft_reset
P_ ((struct tty_display_info
*));
240 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
242 SIGMASKTYPE sigprocmask_set
;
245 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
247 /* Return the current working directory. Returns NULL on errors.
248 Any other returned value must be freed with free. This is used
249 only when get_current_dir_name is not defined on the system. */
251 get_current_dir_name ()
255 struct stat dotstat
, pwdstat
;
256 /* If PWD is accurate, use it instead of calling getwd. PWD is
257 sometimes a nicer name, and using it may avoid a fatal error if a
258 parent directory is searchable but not readable. */
259 if ((pwd
= getenv ("PWD")) != 0
260 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
261 && stat (pwd
, &pwdstat
) == 0
262 && stat (".", &dotstat
) == 0
263 && dotstat
.st_ino
== pwdstat
.st_ino
264 && dotstat
.st_dev
== pwdstat
.st_dev
266 && strlen (pwd
) < MAXPATHLEN
270 buf
= (char *) malloc (strlen (pwd
) + 1);
278 size_t buf_size
= 1024;
279 buf
= (char *) malloc (buf_size
);
284 if (getcwd (buf
, buf_size
) == buf
)
288 int tmp_errno
= errno
;
294 buf
= (char *) realloc (buf
, buf_size
);
302 /* We need MAXPATHLEN here. */
303 buf
= (char *) malloc (MAXPATHLEN
+ 1);
306 if (getwd (buf
) == NULL
)
308 int tmp_errno
= errno
;
320 /* Discard pending input on all input descriptors. */
326 struct emacs_tty buf
;
333 SYS$
QIOW (0, fileno (CURTTY()->input
), IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
334 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
337 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
338 while (dos_keyread () != -1)
340 #else /* not MSDOS */
342 struct tty_display_info
*tty
;
343 for (tty
= tty_list
; tty
; tty
= tty
->next
)
345 if (tty
->input
) /* Is the device suspended? */
347 EMACS_GET_TTY (fileno (tty
->input
), &buf
);
348 EMACS_SET_TTY (fileno (tty
->input
), &buf
, 0);
352 #endif /* not MSDOS */
354 #endif /* not WINDOWSNT */
360 /* Arrange for character C to be read as the next input from
362 XXX What if we have multiple ttys?
368 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
371 /* Should perhaps error if in batch mode */
373 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
374 #else /* no TIOCSTI */
375 error ("Cannot stuff terminal input characters in this version of Unix");
376 #endif /* no TIOCSTI */
382 init_baud_rate (int fd
)
390 #else /* not DOS_NT */
394 SYS$
QIOW (0, fd
, IO$_SENSEMODE
, &sg
, 0, 0,
395 &sg
.class, 12, 0, 0, 0, 0 );
396 emacs_ospeed
= sg
.xmit_baud
;
403 emacs_ospeed
= cfgetospeed (&sg
);
404 #else /* neither VMS nor TERMIOS */
412 ioctl (fd
, TCGETA
, &sg
);
414 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
415 #else /* neither VMS nor TERMIOS nor TERMIO */
418 sg
.sg_ospeed
= B9600
;
419 if (ioctl (fd
, TIOCGETP
, &sg
) < 0)
421 emacs_ospeed
= sg
.sg_ospeed
;
422 #endif /* not HAVE_TERMIO */
423 #endif /* not HAVE_TERMIOS */
425 #endif /* not DOS_NT */
428 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
429 ? baud_convert
[emacs_ospeed
] : 9600);
437 set_exclusive_use (fd
)
441 ioctl (fd
, FIOCLEX
, 0);
443 /* Ok to do nothing if this feature does not exist */
448 wait_without_blocking ()
451 wait3 (0, WNOHANG
| WUNTRACED
, 0);
453 croak ("wait_without_blocking");
455 synch_process_alive
= 0;
458 #endif /* not subprocesses */
460 int wait_debugging
; /* Set nonzero to make following function work under dbx
461 (at least for bsd). */
464 wait_for_termination_signal ()
467 /* Wait for subprocess with process id `pid' to terminate and
468 make sure it will get eliminated (not remain forever as a zombie) */
471 wait_for_termination (pid
)
480 status
= SYS$
FORCEX (&pid
, 0, 0);
483 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
484 /* Note that kill returns -1 even if the process is just a zombie now.
485 But inevitably a SIGCHLD interrupt should be generated
486 and child_sig will do wait3 and make the process go away. */
487 /* There is some indication that there is a bug involved with
488 termination of subprocesses, perhaps involving a kernel bug too,
489 but no idea what it is. Just as a hunch we signal SIGCHLD to see
490 if that causes the problem to go away or get worse. */
491 sigsetmask (sigmask (SIGCHLD
));
492 if (0 > kill (pid
, 0))
494 sigsetmask (SIGEMPTYMASK
);
495 kill (getpid (), SIGCHLD
);
501 sigpause (SIGEMPTYMASK
);
502 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
503 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
504 sigblock (sigmask (SIGCHLD
));
506 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
508 sigunblock (sigmask (SIGCHLD
));
512 sigsuspend (&empty_mask
);
513 #else /* not POSIX_SIGNALS */
514 #ifdef HAVE_SYSV_SIGPAUSE
516 if (0 > kill (pid
, 0))
522 #else /* not HAVE_SYSV_SIGPAUSE */
526 #else /* not WINDOWSNT */
527 if (0 > kill (pid
, 0))
529 /* Using sleep instead of pause avoids timing error.
530 If the inferior dies just before the sleep,
531 we lose just one second. */
533 #endif /* not WINDOWSNT */
534 #endif /* not HAVE_SYSV_SIGPAUSE */
535 #endif /* not POSIX_SIGNALS */
536 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
538 #else /* not subprocesses */
541 #else /* not __DJGPP__ > 1 */
543 if (kill (pid
, 0) < 0)
549 if (status
== pid
|| status
== -1)
552 #endif /* not __DJGPP__ > 1*/
553 #endif /* not subprocesses */
560 * flush any pending output
561 * (may flush input as well; it does not matter the way we use it)
565 flush_pending_output (channel
)
569 /* If we try this, we get hit with SIGTTIN, because
570 the child's tty belongs to the child's pgrp. */
573 ioctl (channel
, TCFLSH
, 1);
577 /* 3rd arg should be ignored
578 but some 4.2 kernels actually want the address of an int
579 and nonzero means something different. */
580 ioctl (channel
, TIOCFLUSH
, &zero
);
587 /* Set up the terminal at the other end of a pseudo-terminal that
588 we will be controlling an inferior through.
589 It should not echo or do line-editing, since that is done
590 in Emacs. No padding needed for insertion into an Emacs buffer. */
593 child_setup_tty (out
)
599 EMACS_GET_TTY (out
, &s
);
601 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
602 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
603 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
605 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
606 /* No output delays */
608 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
609 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
610 #if 0 /* This causes bugs in (for instance) telnet to certain sites. */
611 s
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
612 #ifdef INLCR /* Just being cautious, since I can't check how
613 widespread INLCR is--rms. */
614 s
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
618 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
621 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
624 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
626 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
627 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
629 /* Said to be unnecessary: */
630 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
631 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
634 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
635 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
636 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
637 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
640 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
643 #ifdef SIGNALS_VIA_CHARACTERS
644 /* the QUIT and INTR character are used in process_send_signal
645 so set them here to something useful. */
646 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
647 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
648 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
649 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
650 #endif /* not SIGNALS_VIA_CHARACTERS */
653 /* AIX enhanced edit loses NULs, so disable it */
656 s
.main
.c_iflag
&= ~ASCEDIT
;
658 /* Also, PTY overloads NUL and BREAK.
659 don't ignore break, but don't signal either, so it looks like NUL. */
660 s
.main
.c_iflag
&= ~IGNBRK
;
661 s
.main
.c_iflag
&= ~BRKINT
;
662 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
663 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
664 would force it to 0377. That looks like duplicated code. */
665 #ifndef SIGNALS_VIA_CHARACTERS
666 /* QUIT and INTR work better as signals, so disable character forms */
667 s
.main
.c_cc
[VQUIT
] = CDISABLE
;
668 s
.main
.c_cc
[VINTR
] = CDISABLE
;
669 s
.main
.c_lflag
&= ~ISIG
;
670 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
671 s
.main
.c_cc
[VEOL
] = CDISABLE
;
672 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
675 #else /* not HAVE_TERMIO */
677 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
679 s
.main
.sg_flags
|= LPASS8
;
680 s
.main
.sg_erase
= 0377;
681 s
.main
.sg_kill
= 0377;
682 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
684 #endif /* not HAVE_TERMIO */
686 EMACS_SET_TTY (out
, &s
, 0);
692 #endif /* not DOS_NT */
696 #endif /* subprocesses */
698 /* Record a signal code and the handler for it. */
702 SIGTYPE (*handler
) P_ ((int));
705 static void save_signal_handlers
P_ ((struct save_signal
*));
706 static void restore_signal_handlers
P_ ((struct save_signal
*));
708 /* Suspend the Emacs process; give terminal to its superior. */
714 /* "Foster" parentage allows emacs to return to a subprocess that attached
715 to the current emacs as a cheaper than starting a whole new process. This
716 is set up by KEPTEDITOR.COM. */
717 unsigned long parent_id
, foster_parent_id
;
720 fpid_string
= getenv ("EMACS_PARENT_PID");
721 if (fpid_string
!= NULL
)
723 sscanf (fpid_string
, "%x", &foster_parent_id
);
724 if (foster_parent_id
!= 0)
725 parent_id
= foster_parent_id
;
727 parent_id
= getppid ();
730 parent_id
= getppid ();
732 xfree (fpid_string
); /* On VMS, this was malloc'd */
734 if (parent_id
&& parent_id
!= 0xffffffff)
736 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
737 int status
= LIB$
ATTACH (&parent_id
) & 1;
738 signal (SIGINT
, oldsig
);
747 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
748 d_prompt
.a
= "Emacs: "; /* Just a reminder */
749 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
754 #if defined (SIGTSTP) && !defined (MSDOS)
757 int pgrp
= EMACS_GETPGRP (0);
758 EMACS_KILLPG (pgrp
, SIGTSTP
);
761 #else /* No SIGTSTP */
762 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
763 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
764 kill (getpid (), SIGQUIT
);
766 #else /* No SIGTSTP or USG_JOBCTRL */
768 /* On a system where suspending is not implemented,
769 instead fork a subshell and let it talk directly to the terminal
773 #endif /* no USG_JOBCTRL */
774 #endif /* no SIGTSTP */
778 /* Fork a subshell. */
784 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
786 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
789 struct save_signal saved_handlers
[5];
791 unsigned char *str
= 0;
794 saved_handlers
[0].code
= SIGINT
;
795 saved_handlers
[1].code
= SIGQUIT
;
796 saved_handlers
[2].code
= SIGTERM
;
798 saved_handlers
[3].code
= SIGIO
;
799 saved_handlers
[4].code
= 0;
801 saved_handlers
[3].code
= 0;
804 /* Mentioning current_buffer->buffer would mean including buffer.h,
805 which somehow wedges the hp compiler. So instead... */
807 dir
= intern ("default-directory");
808 if (NILP (Fboundp (dir
)))
810 dir
= Fsymbol_value (dir
);
814 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
815 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
817 bcopy (SDATA (dir
), str
, len
);
818 if (str
[len
- 1] != '/') str
[len
++] = '/';
825 save_signal_handlers (saved_handlers
);
826 synch_process_alive
= 1;
827 #endif /* __DJGPP__ > 1 */
831 error ("Can't spawn subshell");
838 #ifdef DOS_NT /* MW, Aug 1993 */
841 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
844 sh
= (char *) egetenv ("SHELL");
848 /* Use our buffer's default directory for the subshell. */
850 chdir ((char *) str
);
853 close_process_descs (); /* Close Emacs's pipes/ptys */
856 #ifdef SET_EMACS_PRIORITY
858 extern EMACS_INT emacs_priority
;
860 if (emacs_priority
< 0)
861 nice (-emacs_priority
);
865 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
867 char *epwd
= getenv ("PWD");
868 char old_pwd
[MAXPATHLEN
+1+4];
870 /* If PWD is set, pass it with corrected value. */
873 strcpy (old_pwd
, epwd
);
874 if (str
[len
- 1] == '/')
876 setenv ("PWD", str
, 1);
881 putenv (old_pwd
); /* restore previous value */
883 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
885 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
887 #else /* not MSDOS */
889 /* Waits for process completion */
890 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
893 write (1, "Can't execute subshell", 22);
894 #else /* not WINDOWSNT */
895 execlp (sh
, sh
, (char *) 0);
896 write (1, "Can't execute subshell", 22);
898 #endif /* not WINDOWSNT */
899 #endif /* not MSDOS */
902 /* Do this now if we did not do it before. */
903 #if !defined (MSDOS) || __DJGPP__ == 1
904 save_signal_handlers (saved_handlers
);
905 synch_process_alive
= 1;
909 wait_for_termination (pid
);
911 restore_signal_handlers (saved_handlers
);
912 synch_process_alive
= 0;
917 save_signal_handlers (saved_handlers
)
918 struct save_signal
*saved_handlers
;
920 while (saved_handlers
->code
)
922 saved_handlers
->handler
923 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
929 restore_signal_handlers (saved_handlers
)
930 struct save_signal
*saved_handlers
;
932 while (saved_handlers
->code
)
934 signal (saved_handlers
->code
, saved_handlers
->handler
);
940 /* If SIGIO is broken, don't do anything. */
957 unrequest_sigio (void)
964 int old_fcntl_flags
[MAXDESC
];
971 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
972 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
974 interrupts_deferred
= 0;
982 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
986 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
987 /* XXX Uhm, FASYNC is not used anymore here. */
988 /* XXX Yeah, but you need it for SIGIO, don't you? */
997 sigunblock (sigmask (SIGWINCH
));
999 sigunblock (sigmask (SIGIO
));
1001 interrupts_deferred
= 0;
1005 unrequest_sigio (void)
1010 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
1016 sigblock (sigmask (SIGWINCH
));
1018 sigblock (sigmask (SIGIO
));
1019 interrupts_deferred
= 1;
1022 #else /* no FASYNC */
1028 if (noninteractive
|| read_socket_hook
)
1031 croak ("request_sigio");
1037 if (noninteractive
|| read_socket_hook
)
1040 croak ("unrequest_sigio");
1045 #endif /* F_SETFL */
1048 /* Saving and restoring the process group of Emacs's terminal. */
1052 /* The process group of which Emacs was a member when it initially
1055 If Emacs was in its own process group (i.e. inherited_pgroup ==
1056 getpid ()), then we know we're running under a shell with job
1057 control (Emacs would never be run as part of a pipeline).
1060 If Emacs was not in its own process group, then we know we're
1061 running under a shell (or a caller) that doesn't know how to
1062 separate itself from Emacs (like sh). Emacs must be in its own
1063 process group in order to receive SIGIO correctly. In this
1064 situation, we put ourselves in our own pgroup, forcibly set the
1065 tty's pgroup to our pgroup, and make sure to restore and reinstate
1066 the tty's pgroup just like any other terminal setting. If
1067 inherited_group was not the tty's pgroup, then we'll get a
1068 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1069 it goes foreground in the future, which is what should happen.
1071 This variable is initialized in emacs.c. */
1072 int inherited_pgroup
;
1074 /* Split off the foreground process group to Emacs alone. When we are
1075 in the foreground, but not started in our own process group,
1076 redirect the tty device handle FD to point to our own process
1077 group. We need to be in our own process group to receive SIGIO
1080 narrow_foreground_group (int fd
)
1084 setpgrp (0, inherited_pgroup
);
1086 /* XXX inherited_pgroup should not be zero here, but GTK seems to
1088 if (! inherited_pgroup
)
1089 abort (); /* Should not happen. */
1091 if (inherited_pgroup
!= me
)
1092 EMACS_SET_TTY_PGRP (fd
, &me
); /* XXX This only works on the controlling tty. */
1096 /* Set the tty to our original foreground group. */
1098 widen_foreground_group (int fd
)
1100 if (inherited_pgroup
!= getpid ())
1101 EMACS_SET_TTY_PGRP (fd
, &inherited_pgroup
);
1102 setpgrp (0, inherited_pgroup
);
1105 #endif /* BSD_PGRPS */
1107 /* Getting and setting emacs_tty structures. */
1109 /* Set *TC to the parameters associated with the terminal FD.
1110 Return zero if all's well, or -1 if we ran into an error we
1111 couldn't deal with. */
1113 emacs_get_tty (fd
, settings
)
1115 struct emacs_tty
*settings
;
1117 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1119 /* We have those nifty POSIX tcmumbleattr functions. */
1120 bzero (&settings
->main
, sizeof (settings
->main
));
1121 if (tcgetattr (fd
, &settings
->main
) < 0)
1126 /* The SYSV-style interface? */
1127 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1132 /* Vehemently Monstrous System? :-) */
1133 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1134 &settings
->main
.class, 12, 0, 0, 0, 0)
1140 /* I give up - I hope you have the BSD ioctls. */
1141 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1143 #endif /* not DOS_NT */
1148 /* Suivant - Do we have to get struct ltchars data? */
1150 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1154 /* How about a struct tchars and a wordful of lmode bits? */
1156 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1157 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1161 /* We have survived the tempest. */
1166 /* Set the parameters of the tty on FD according to the contents of
1167 *SETTINGS. If FLUSHP is non-zero, we discard input.
1168 Return 0 if all went well, and -1 if anything failed. */
1171 emacs_set_tty (fd
, settings
, flushp
)
1173 struct emacs_tty
*settings
;
1176 /* Set the primary parameters - baud rate, character size, etcetera. */
1179 /* We have those nifty POSIX tcmumbleattr functions.
1180 William J. Smith <wjs@wiis.wang.com> writes:
1181 "POSIX 1003.1 defines tcsetattr to return success if it was
1182 able to perform any of the requested actions, even if some
1183 of the requested actions could not be performed.
1184 We must read settings back to ensure tty setup properly.
1185 AIX requires this to keep tty from hanging occasionally." */
1186 /* This make sure that we don't loop indefinitely in here. */
1187 for (i
= 0 ; i
< 10 ; i
++)
1188 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1199 bzero (&new, sizeof (new));
1200 /* Get the current settings, and see if they're what we asked for. */
1201 tcgetattr (fd
, &new);
1202 /* We cannot use memcmp on the whole structure here because under
1203 * aix386 the termios structure has some reserved field that may
1206 if ( new.c_iflag
== settings
->main
.c_iflag
1207 && new.c_oflag
== settings
->main
.c_oflag
1208 && new.c_cflag
== settings
->main
.c_cflag
1209 && new.c_lflag
== settings
->main
.c_lflag
1210 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1218 /* The SYSV-style interface? */
1219 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1224 /* Vehemently Monstrous System? :-) */
1225 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1226 &settings
->main
.class, 12, 0, 0, 0, 0)
1232 /* I give up - I hope you have the BSD ioctls. */
1233 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1235 #endif /* not DOS_NT */
1241 /* Suivant - Do we have to get struct ltchars data? */
1243 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1247 /* How about a struct tchars and a wordful of lmode bits? */
1249 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1250 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1254 /* We have survived the tempest. */
1261 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1267 int old_fcntl_owner
[MAXDESC
];
1268 #endif /* F_SETOWN */
1270 /* This may also be defined in stdio,
1271 but if so, this does no harm,
1272 and using the same name avoids wasting the other one's space. */
1275 extern char *_sobuf
;
1277 #if defined (USG) || defined (DGUX)
1278 unsigned char _sobuf
[BUFSIZ
+8];
1280 char _sobuf
[BUFSIZ
];
1285 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1288 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1291 /* Initialize the terminal mode on all tty devices that are currently
1295 init_all_sys_modes (void)
1297 struct tty_display_info
*tty
;
1298 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1299 init_sys_modes (tty
);
1302 /* Initialize the terminal mode on the given tty device. */
1305 init_sys_modes (tty_out
)
1306 struct tty_display_info
*tty_out
;
1308 struct emacs_tty tty
;
1312 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1313 extern int (*interrupt_signal
) ();
1317 Vtty_erase_char
= Qnil
;
1322 if (!tty_out
->output
)
1323 return; /* The tty is suspended. */
1327 input_ef
= get_kbd_event_flag ();
1328 /* LIB$GET_EF (&input_ef); */
1329 SYS$
CLREF (input_ef
);
1330 waiting_for_ast
= 0;
1332 timer_ef
= get_timer_event_flag ();
1333 /* LIB$GET_EF (&timer_ef); */
1334 SYS$
CLREF (timer_ef
);
1338 LIB$
GET_EF (&process_ef
);
1339 SYS$
CLREF (process_ef
);
1341 if (input_ef
/ 32 != process_ef
/ 32)
1342 croak ("Input and process event flags in different clusters.");
1344 if (input_ef
/ 32 != timer_ef
/ 32)
1345 croak ("Input and timer event flags in different clusters.");
1347 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1348 ((unsigned) 1 << (process_ef
% 32));
1350 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1351 ((unsigned) 1 << (timer_ef
% 32));
1353 sys_access_reinit ();
1359 /* read_socket_hook is not global anymore. I think doing this
1360 unconditionally will not cause any problems. */
1361 if (! read_socket_hook
&& EQ (Vinitial_window_system
, Qnil
))
1363 narrow_foreground_group (fileno (tty_out
->input
));
1366 if (! tty_out
->old_tty
)
1367 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
1369 EMACS_GET_TTY (fileno (tty_out
->input
), tty_out
->old_tty
);
1371 tty
= *tty_out
->old_tty
;
1373 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1374 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
1376 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1377 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1378 #ifdef INLCR /* I'm just being cautious,
1379 since I can't check how widespread INLCR is--rms. */
1380 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1383 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1385 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1386 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1388 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1390 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1391 if (tty_out
->flow_control
)
1393 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1395 tty
.main
.c_iflag
&= ~IXANY
;
1399 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1400 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1402 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1404 if (tty_out
->meta_key
)
1406 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1407 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1410 if (tty_out
->input
== stdin
)
1412 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1413 /* Set up C-g for both SIGQUIT and SIGINT.
1414 We don't know which we will get, but we handle both alike
1415 so which one it really gives us does not matter. */
1416 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1420 /* We normally don't get interrupt or quit signals from tty
1421 devices other than our controlling terminal; therefore,
1422 we must handle C-g as normal input. Unfortunately, this
1423 means that the interrupt and quit feature must be
1424 disabled on secondary ttys, or we would not even see the
1427 Note that even though emacsclient could have special code
1428 to pass SIGINT to Emacs, we should _not_ enable
1429 interrupt/quit keys for emacsclient frames. This means
1430 that we can't break out of loops in C code from a
1431 secondary tty frame, but we can always decide what
1432 display the C-g came from, which is more important from a
1433 usability point of view. (Consider the case when two
1434 people work together using the same Emacs instance.) */
1435 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
1436 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
1438 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1439 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1441 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1445 #if defined (mips) || defined (HAVE_TCATTR)
1447 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1450 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1451 #endif /* V_DSUSP */
1452 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1453 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1456 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1459 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1460 #endif /* VREPRINT */
1462 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1463 #endif /* VWERASE */
1465 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1466 #endif /* VDISCARD */
1468 if (tty_out
->flow_control
)
1471 tty
.main
.c_cc
[VSTART
] = '\021';
1474 tty
.main
.c_cc
[VSTOP
] = '\023';
1480 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1483 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1486 #endif /* mips or HAVE_TCATTR */
1488 #ifdef SET_LINE_DISCIPLINE
1489 /* Need to explicitly request TERMIODISC line discipline or
1490 Ultrix's termios does not work correctly. */
1491 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1495 /* AIX enhanced edit loses NULs, so disable it. */
1496 tty
.main
.c_line
= 0;
1497 tty
.main
.c_iflag
&= ~ASCEDIT
;
1499 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1500 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1501 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1502 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1503 #endif /* IBMR2AIX */
1504 if (tty_out
->flow_control
)
1507 tty
.main
.c_cc
[VSTART
] = '\021';
1510 tty
.main
.c_cc
[VSTOP
] = '\023';
1513 /* Also, PTY overloads NUL and BREAK.
1514 don't ignore break, but don't signal either, so it looks like NUL.
1515 This really serves a purpose only if running in an XTERM window
1516 or via TELNET or the like, but does no harm elsewhere. */
1517 tty
.main
.c_iflag
&= ~IGNBRK
;
1518 tty
.main
.c_iflag
&= ~BRKINT
;
1520 #else /* if not HAVE_TERMIO */
1522 tty
.main
.tt_char
|= TT$M_NOECHO
;
1524 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1525 if (tty_out
->flow_control
)
1526 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1528 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1529 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1530 #else /* not VMS (BSD, that is) */
1532 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1533 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1535 tty
.main
.sg_flags
|= ANYP
;
1536 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1537 #endif /* not DOS_NT */
1538 #endif /* not VMS (BSD, that is) */
1539 #endif /* not HAVE_TERMIO */
1541 /* If going to use CBREAK mode, we must request C-g to interrupt
1542 and turn off start and stop chars, etc. If not going to use
1543 CBREAK mode, do this anyway so as to turn off local flow
1544 control for user coming over network on 4.2; in this case,
1545 only t_stopc and t_startc really matter. */
1548 /* Note: if not using CBREAK mode, it makes no difference how we
1550 tty
.tchars
= new_tchars
;
1551 tty
.tchars
.t_intrc
= quit_char
;
1552 if (tty_out
->flow_control
)
1554 tty
.tchars
.t_startc
= '\021';
1555 tty
.tchars
.t_stopc
= '\023';
1558 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| tty_out
->old_tty
.lmode
;
1560 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1561 anything, and leaving it in breaks the meta key. Go figure. */
1562 tty
.lmode
&= ~LLITOUT
;
1569 #endif /* HAVE_TCHARS */
1570 #endif /* not HAVE_TERMIO */
1573 tty
.ltchars
= new_ltchars
;
1574 #endif /* HAVE_LTCHARS */
1575 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1576 if (!tty_out
->term_initted
)
1577 internal_terminal_init ();
1581 EMACS_SET_TTY (fileno (tty_out
->input
), &tty
, 0);
1583 /* This code added to insure that, if flow-control is not to be used,
1584 we have an unlocked terminal at the start. */
1587 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1590 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1593 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1595 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1603 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1604 to be only LF. This is the way that is done. */
1607 if (ioctl (1, HFTGETID
, &tty
) != -1)
1608 write (1, "\033[20l", 5);
1614 /* Appears to do nothing when in PASTHRU mode.
1615 SYS$QIOW (0, fileno (tty_out->input), IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1616 interrupt_signal, oob_chars, 0, 0, 0, 0);
1618 queue_kbd_input (0);
1622 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1623 if (interrupt_input
)
1625 old_fcntl_owner
[fileno (tty_out
->input
)] =
1626 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1627 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1628 init_sigio (fileno (tty_out
->input
));
1630 if (gpm_tty
== tty_out
)
1632 /* Arrange for mouse events to give us SIGIO signals. */
1633 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1634 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1635 init_sigio (gpm_fd
);
1637 #endif /* HAVE_GPM */
1639 #endif /* F_GETOWN */
1640 #endif /* F_SETFL */
1643 if (interrupt_input
)
1644 init_sigio (fileno (tty_out
->input
));
1647 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1651 /* This symbol is defined on recent USG systems.
1652 Someone says without this call USG won't really buffer the file
1653 even with a call to setbuf. */
1654 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1656 setbuf (tty_out
->output
, (char *) _sobuf
);
1659 if (tty_out
->terminal
->set_terminal_modes_hook
)
1660 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1662 if (!tty_out
->term_initted
)
1664 Lisp_Object tail
, frame
;
1665 FOR_EACH_FRAME (tail
, frame
)
1667 /* XXX This needs to be revised. */
1668 if (FRAME_TERMCAP_P (XFRAME (frame
))
1669 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1670 init_frame_faces (XFRAME (frame
));
1674 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1676 /* XXX This seems wrong on multi-tty. */
1677 if (display_completed
)
1678 direct_output_forward_char (0);
1682 Lisp_Object tail
, frame
;
1684 FOR_EACH_FRAME (tail
, frame
)
1686 if (FRAME_TERMCAP_P (XFRAME (frame
))
1687 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1688 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1692 tty_out
->term_initted
= 1;
1695 /* Return nonzero if safe to use tabs in output.
1696 At the time this is called, init_sys_modes has not been done yet. */
1699 tabs_safe_p (int fd
)
1701 struct emacs_tty etty
;
1703 EMACS_GET_TTY (fd
, &etty
);
1704 return EMACS_TTY_TABS_OK (&etty
);
1707 /* Get terminal size from system.
1708 Store number of lines into *HEIGHTP and width into *WIDTHP.
1709 We store 0 if there's no valid information. */
1712 get_tty_size (int fd
, int *widthp
, int *heightp
)
1718 struct winsize size
;
1720 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1721 *widthp
= *heightp
= 0;
1724 *widthp
= size
.ws_col
;
1725 *heightp
= size
.ws_row
;
1731 /* SunOS - style. */
1732 struct ttysize size
;
1734 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1735 *widthp
= *heightp
= 0;
1738 *widthp
= size
.ts_cols
;
1739 *heightp
= size
.ts_lines
;
1745 /* Use a fresh channel since the current one may have stale info
1746 (for example, from prior to a suspend); and to avoid a dependency
1747 in the init sequence. */
1749 struct sensemode tty
;
1751 SYS$
ASSIGN (&input_dsc
, &chan
, 0, 0);
1752 SYS$
QIOW (0, chan
, IO$_SENSEMODE
, &tty
, 0, 0,
1753 &tty
.class, 12, 0, 0, 0, 0);
1755 *widthp
= tty
.scr_wid
;
1756 *heightp
= tty
.scr_len
;
1760 *widthp
= ScreenCols ();
1761 *heightp
= ScreenRows ();
1762 #else /* system doesn't know size */
1766 #endif /* not VMS */
1767 #endif /* not SunOS-style */
1768 #endif /* not BSD-style */
1771 /* Set the logical window size associated with descriptor FD
1772 to HEIGHT and WIDTH. This is used mainly with ptys. */
1775 set_window_size (fd
, height
, width
)
1776 int fd
, height
, width
;
1781 struct winsize size
;
1782 size
.ws_row
= height
;
1783 size
.ws_col
= width
;
1785 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1786 return 0; /* error */
1793 /* SunOS - style. */
1794 struct ttysize size
;
1795 size
.ts_lines
= height
;
1796 size
.ts_cols
= width
;
1798 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1804 #endif /* not SunOS-style */
1805 #endif /* not BSD-style */
1810 /* Prepare all terminal devices for exiting Emacs. */
1813 reset_all_sys_modes (void)
1815 struct tty_display_info
*tty
;
1816 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1817 reset_sys_modes (tty
);
1820 /* Prepare the terminal for closing it; move the cursor to the
1821 bottom of the frame, turn off interrupt-driven I/O, etc. */
1824 reset_sys_modes (tty_out
)
1825 struct tty_display_info
*tty_out
;
1832 if (!tty_out
->term_initted
)
1835 if (!tty_out
->output
)
1836 return; /* The tty is suspended. */
1838 /* Go to and clear the last line of the terminal. */
1840 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1842 /* Code adapted from tty_clear_end_of_line. */
1843 if (tty_out
->TS_clr_line
)
1845 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1848 { /* have to do it the hard way */
1850 tty_turn_off_insert (tty_out
);
1852 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1854 fputc (' ', tty_out
->output
);
1858 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1859 fflush (tty_out
->output
);
1861 #if defined (IBMR2AIX) && defined (AIXHFT)
1863 /* HFT devices normally use ^J as a LF/CR. We forced it to
1864 do the LF only. Now, we need to reset it. */
1867 if (ioctl (1, HFTGETID
, &tty
) != -1)
1868 write (1, "\033[20h", 5);
1872 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1873 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1877 /* Avoid possible loss of output when changing terminal modes. */
1878 fsync (fileno (tty_out
->output
));
1883 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1884 if (interrupt_input
)
1886 reset_sigio (fileno (tty_out
->input
));
1887 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1888 old_fcntl_owner
[fileno (tty_out
->input
)]);
1890 #endif /* F_SETOWN */
1892 fcntl (fileno (tty_out
->input
), F_SETFL
,
1893 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1895 #endif /* F_SETFL */
1897 if (interrupt_input
)
1898 reset_sigio (fileno (tty_out
->input
));
1901 if (tty_out
->old_tty
)
1902 while (EMACS_SET_TTY (fileno (tty_out
->input
),
1903 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1906 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1910 #ifdef SET_LINE_DISCIPLINE
1911 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1912 A different old line discipline is therefore not restored, yet.
1913 Restore the old line discipline by hand. */
1914 ioctl (0, TIOCSETD
, &tty_out
->old_tty
.main
.c_line
);
1922 widen_foreground_group (fileno (tty_out
->input
));
1928 /* Set up the proper status flags for use of a pty. */
1934 /* I'm told that TOICREMOTE does not mean control chars
1935 "can't be sent" but rather that they don't have
1936 input-editing or signaling effects.
1937 That should be good, because we have other ways
1938 to do those things in Emacs.
1939 However, telnet mode seems not to work on 4.2.
1940 So TIOCREMOTE is turned off now. */
1942 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1943 will hang. In particular, the "timeout" feature (which
1944 causes a read to return if there is no data available)
1945 does this. Also it is known that telnet mode will hang
1946 in such a way that Emacs must be stopped (perhaps this
1947 is the same problem).
1949 If TIOCREMOTE is turned off, then there is a bug in
1950 hp-ux which sometimes loses data. Apparently the
1951 code which blocks the master process when the internal
1952 buffer fills up does not work. Other than this,
1953 though, everything else seems to work fine.
1955 Since the latter lossage is more benign, we may as well
1956 lose that way. -- cph */
1958 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
1961 ioctl (fd
, FIONBIO
, &on
);
1966 #endif /* HAVE_PTYS */
1970 /* Assigning an input channel is done at the start of Emacs execution.
1971 This is called each time Emacs is resumed, also, but does nothing
1972 because input_chain is no longer zero. */
1979 if (fileno (CURTTY ()->input
)) == 0)
1981 status
= SYS$
ASSIGN (&input_dsc
, &fileno (CURTTY ()->input
)), 0, 0);
1987 /* Deassigning the input channel is done before exiting. */
1992 return SYS$
DASSGN (fileno (CURTTY ()->input
)));
1997 /* Request reading one character into the keyboard buffer.
1998 This is done as soon as the buffer becomes empty. */
2004 extern kbd_input_ast ();
2006 waiting_for_ast
= 0;
2008 status
= SYS$
QIO (0, fileno (CURTTY()->input
), IO$_READVBLK
,
2009 &input_iosb
, kbd_input_ast
, 1,
2010 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
2015 /* Ast routine that is called when keyboard input comes in
2016 in accord with the SYS$QIO above. */
2021 register int c
= -1;
2022 int old_errno
= errno
;
2023 extern EMACS_TIME
*input_available_clear_time
;
2025 if (waiting_for_ast
)
2026 SYS$
SETEF (input_ef
);
2027 waiting_for_ast
= 0;
2030 if (input_count
== 25)
2032 printf ("Ast # %d,", input_count
);
2033 printf (" iosb = %x, %x, %x, %x",
2034 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
2037 if (input_iosb
.offset
)
2041 printf (", char = 0%o", c
);
2053 struct input_event e
;
2056 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2057 XSETINT (e
.code
, c
);
2058 e
.frame_or_window
= selected_frame
;
2059 kbd_buffer_store_event (&e
);
2061 if (input_available_clear_time
)
2062 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
2066 /* Wait until there is something in kbd_buffer. */
2069 wait_for_kbd_input ()
2071 extern int have_process_input
, process_exited
;
2073 /* If already something, avoid doing system calls. */
2074 if (detect_input_pending ())
2078 /* Clear a flag, and tell ast routine above to set it. */
2079 SYS$
CLREF (input_ef
);
2080 waiting_for_ast
= 1;
2081 /* Check for timing error: ast happened while we were doing that. */
2082 if (!detect_input_pending ())
2084 /* No timing error: wait for flag to be set. */
2085 set_waiting_for_input (0);
2086 SYS$
WFLOR (input_ef
, input_eflist
);
2087 clear_waiting_for_input ();
2088 if (!detect_input_pending ())
2089 /* Check for subprocess input availability */
2091 int dsp
= have_process_input
|| process_exited
;
2093 SYS$
CLREF (process_ef
);
2094 if (have_process_input
)
2095 process_command_input ();
2100 update_mode_lines
++;
2101 prepare_menu_bars ();
2102 redisplay_preserve_echo_area (18);
2106 waiting_for_ast
= 0;
2109 /* Get rid of any pending QIO, when we are about to suspend
2110 or when we want to throw away pending input.
2111 We wait for a positive sign that the AST routine has run
2112 and therefore there is no I/O request queued when we return.
2113 SYS$SETAST is used to avoid a timing error. */
2119 printf ("At end_kbd_input.\n");
2123 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2125 SYS$
CANCEL (fileno (CURTTY()->input
));
2130 /* Clear a flag, and tell ast routine above to set it. */
2131 SYS$
CLREF (input_ef
);
2132 waiting_for_ast
= 1;
2134 SYS$
CANCEL (fileno (CURTTY()->input
));
2136 SYS$
WAITFR (input_ef
);
2137 waiting_for_ast
= 0;
2140 /* Wait for either input available or time interval expiry. */
2143 input_wait_timeout (timeval
)
2144 int timeval
; /* Time to wait, in seconds */
2147 static int zero
= 0;
2148 static int large
= -10000000;
2150 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2152 /* If already something, avoid doing system calls. */
2153 if (detect_input_pending ())
2157 /* Clear a flag, and tell ast routine above to set it. */
2158 SYS$
CLREF (input_ef
);
2159 waiting_for_ast
= 1;
2160 /* Check for timing error: ast happened while we were doing that. */
2161 if (!detect_input_pending ())
2163 /* No timing error: wait for flag to be set. */
2165 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2166 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2168 waiting_for_ast
= 0;
2171 /* The standard `sleep' routine works some other way
2172 and it stops working if you have ever quit out of it.
2173 This one continues to work. */
2179 static int zero
= 0;
2180 static int large
= -10000000;
2182 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2185 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2186 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2207 croak ("request sigio");
2215 croak ("unrequest sigio");
2220 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2225 #ifndef SYSTEM_MALLOC
2232 /* Some systems that cannot dump also cannot implement these. */
2235 * Return the address of the start of the text segment prior to
2236 * doing an unexec. After unexec the return value is undefined.
2237 * See crt0.c for further explanation and _start.
2241 #if !(defined (__NetBSD__) && defined (__ELF__))
2242 #ifndef HAVE_TEXT_START
2247 return ((char *) TEXT_START
);
2249 extern int _start ();
2250 return ((char *) _start
);
2251 #endif /* TEXT_START */
2253 #endif /* not HAVE_TEXT_START */
2257 * Return the address of the start of the data segment prior to
2258 * doing an unexec. After unexec the return value is undefined.
2259 * See crt0.c for further information and definition of data_start.
2261 * Apparently, on BSD systems this is etext at startup. On
2262 * USG systems (swapping) this is highly mmu dependent and
2263 * is also dependent on whether or not the program is running
2264 * with shared text. Generally there is a (possibly large)
2265 * gap between end of text and start of data with shared text.
2267 * On Uniplus+ systems with shared text, data starts at a
2268 * fixed address. Each port (from a given oem) is generally
2269 * different, and the specific value of the start of data can
2270 * be obtained via the UniPlus+ specific "uvar" system call,
2271 * however the method outlined in crt0.c seems to be more portable.
2273 * Probably what will have to happen when a USG unexec is available,
2274 * at least on UniPlus, is temacs will have to be made unshared so
2275 * that text and data are contiguous. Then once loadup is complete,
2276 * unexec will produce a shared executable where the data can be
2277 * at the normal shared text boundary and the startofdata variable
2278 * will be patched by unexec to the correct value.
2282 #ifndef start_of_data
2287 return ((char *) DATA_START
);
2289 #ifdef ORDINARY_LINK
2291 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2292 * data_start isn't defined. We take the address of environ, which
2293 * is known to live at or near the start of the system crt0.c, and
2294 * we don't sweat the handful of bytes that might lose.
2296 extern char **environ
;
2298 return ((char *) &environ
);
2300 extern int data_start
;
2301 return ((char *) &data_start
);
2302 #endif /* ORDINARY_LINK */
2303 #endif /* DATA_START */
2305 #endif /* start_of_data */
2306 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2308 /* init_system_name sets up the string for the Lisp function
2309 system-name to return. */
2315 extern Lisp_Object Vsystem_name
;
2320 #include <sys/socket.h>
2322 #endif /* HAVE_SOCKETS */
2323 #endif /* not VMS */
2324 #endif /* not BSD4_1 */
2327 #ifndef HAVE_H_ERRNO
2330 #endif /* TRY_AGAIN */
2336 Vsystem_name
= build_string (sysname
);
2340 if ((sp
= egetenv ("SYS$NODE")) == 0)
2341 Vsystem_name
= build_string ("vax-vms");
2342 else if ((end
= index (sp
, ':')) == 0)
2343 Vsystem_name
= build_string (sp
);
2345 Vsystem_name
= make_string (sp
, end
- sp
);
2347 #ifndef HAVE_GETHOSTNAME
2350 Vsystem_name
= build_string (uts
.nodename
);
2351 #else /* HAVE_GETHOSTNAME */
2352 unsigned int hostname_size
= 256;
2353 char *hostname
= (char *) alloca (hostname_size
);
2355 /* Try to get the host name; if the buffer is too short, try
2356 again. Apparently, the only indication gethostname gives of
2357 whether the buffer was large enough is the presence or absence
2358 of a '\0' in the string. Eech. */
2361 gethostname (hostname
, hostname_size
- 1);
2362 hostname
[hostname_size
- 1] = '\0';
2364 /* Was the buffer large enough for the '\0'? */
2365 if (strlen (hostname
) < hostname_size
- 1)
2368 hostname_size
<<= 1;
2369 hostname
= (char *) alloca (hostname_size
);
2372 /* Turn the hostname into the official, fully-qualified hostname.
2373 Don't do this if we're going to dump; this can confuse system
2374 libraries on some machines and make the dumped emacs core dump. */
2377 #endif /* not CANNOT_DUMP */
2378 if (! index (hostname
, '.'))
2381 #ifdef HAVE_GETADDRINFO
2382 struct addrinfo
*res
;
2383 struct addrinfo hints
;
2386 memset (&hints
, 0, sizeof(hints
));
2387 hints
.ai_socktype
= SOCK_STREAM
;
2388 hints
.ai_flags
= AI_CANONNAME
;
2390 for (count
= 0;; count
++)
2392 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
2393 || ret
!= EAI_AGAIN
)
2398 Fsleep_for (make_number (1), Qnil
);
2403 struct addrinfo
*it
= res
;
2406 char *fqdn
= it
->ai_canonname
;
2407 if (fqdn
&& index (fqdn
, '.')
2408 && strcmp (fqdn
, "localhost.localdomain") != 0)
2414 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
2415 strcpy (hostname
, it
->ai_canonname
);
2419 #else /* !HAVE_GETADDRINFO */
2421 for (count
= 0;; count
++)
2427 hp
= gethostbyname (hostname
);
2429 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2436 Fsleep_for (make_number (1), Qnil
);
2441 char *fqdn
= (char *) hp
->h_name
;
2446 if (!index (fqdn
, '.'))
2448 /* We still don't have a fully qualified domain name.
2449 Try to find one in the list of alternate names */
2450 char **alias
= hp
->h_aliases
;
2452 && (!index (*alias
, '.')
2453 || !strcmp (*alias
, "localhost.localdomain")))
2460 /* Convert the host name to lower case. */
2461 /* Using ctype.h here would introduce a possible locale
2462 dependence that is probably wrong for hostnames. */
2466 if (*p
>= 'A' && *p
<= 'Z')
2472 #endif /* !HAVE_GETADDRINFO */
2474 #endif /* HAVE_SOCKETS */
2475 /* We used to try using getdomainname here,
2476 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2477 getdomainname gets the NIS/YP domain which often is not the same
2478 as in Internet domain name. */
2479 #if 0 /* Turned off because sysinfo is not really likely to return the
2480 correct Internet domain. */
2481 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2482 if (! index (hostname
, '.'))
2484 /* The hostname is not fully qualified. Append the domain name. */
2486 int hostlen
= strlen (hostname
);
2487 int domain_size
= 256;
2491 char *domain
= (char *) alloca (domain_size
+ 1);
2492 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2493 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2494 if (sys_domain_size
<= 0)
2496 if (domain_size
< sys_domain_size
)
2498 domain_size
= sys_domain_size
;
2501 strcpy (fqdn
, hostname
);
2502 if (domain
[0] == '.')
2503 strcpy (fqdn
+ hostlen
, domain
);
2504 else if (domain
[0] != 0)
2506 fqdn
[hostlen
] = '.';
2507 strcpy (fqdn
+ hostlen
+ 1, domain
);
2513 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2515 Vsystem_name
= build_string (hostname
);
2516 #endif /* HAVE_GETHOSTNAME */
2521 for (p
= SDATA (Vsystem_name
); *p
; p
++)
2522 if (*p
== ' ' || *p
== '\t')
2529 #if !defined (HAVE_SELECT)
2531 #include "sysselect.h"
2534 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2535 /* Cause explanatory error message at compile time,
2536 since the select emulation is not good enough for X. */
2537 int *x
= &x_windows_lose_if_no_select_system_call
;
2540 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2541 * Only checks read descriptors.
2543 /* How long to wait between checking fds in select */
2544 #define SELECT_PAUSE 1
2547 /* For longjmp'ing back to read_input_waiting. */
2549 jmp_buf read_alarm_throw
;
2551 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2552 The read_socket_hook function sets this to 1 while it is waiting. */
2554 int read_alarm_should_throw
;
2562 #else /* not BSD4_1 */
2563 signal (SIGALRM
, SIG_IGN
);
2564 #endif /* not BSD4_1 */
2565 SIGNAL_THREAD_CHECK (SIGALRM
);
2566 if (read_alarm_should_throw
)
2567 longjmp (read_alarm_throw
, 1);
2571 /* Only rfds are checked. */
2573 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2575 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2576 EMACS_TIME
*timeout
;
2578 /* XXX This needs to be updated for multi-tty support. Is there
2579 anybody who needs to emulate select these days? */
2584 extern int proc_buffered_char
[];
2585 #ifndef subprocesses
2586 int process_tick
= 0, update_tick
= 0;
2588 extern int process_tick
, update_tick
;
2592 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2593 /* If we're using X, then the native select will work; we only need the
2594 emulation for non-X usage. */
2595 if (!NILP (Vinitial_window_system
))
2596 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2598 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2599 local_timeout
= &timeoutval
;
2611 /* If we are looking only for the terminal, with no timeout,
2612 just read it and wait -- that's more efficient. */
2613 if (*local_timeout
== 100000 && process_tick
== update_tick
2614 && FD_ISSET (0, &orfds
))
2617 for (fd
= 1; fd
< nfds
; ++fd
)
2618 if (FD_ISSET (fd
, &orfds
))
2620 if (! detect_input_pending ())
2621 read_input_waiting ();
2627 /* Once a second, till the timer expires, check all the flagged read
2628 * descriptors to see if any input is available. If there is some then
2629 * set the corresponding bit in the return copy of rfds.
2633 register int to_check
, fd
;
2637 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2639 if (FD_ISSET (fd
, &orfds
))
2641 int avail
= 0, status
= 0;
2644 avail
= detect_input_pending (); /* Special keyboard handler */
2648 status
= ioctl (fd
, FIONREAD
, &avail
);
2649 #else /* no FIONREAD */
2650 /* Hoping it will return -1 if nothing available
2651 or 0 if all 0 chars requested are read. */
2652 if (proc_buffered_char
[fd
] >= 0)
2656 avail
= read (fd
, &buf
, 1);
2658 proc_buffered_char
[fd
] = buf
;
2660 #endif /* no FIONREAD */
2662 if (status
>= 0 && avail
> 0)
2670 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2673 turn_on_atimers (0);
2674 signal (SIGALRM
, select_alarm
);
2676 alarm (SELECT_PAUSE
);
2678 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2679 while (select_alarmed
== 0 && *local_timeout
!= 0
2680 && process_tick
== update_tick
)
2682 /* If we are interested in terminal input,
2683 wait by reading the terminal.
2684 That makes instant wakeup for terminal input at least. */
2685 if (FD_ISSET (0, &orfds
))
2687 read_input_waiting ();
2688 if (detect_input_pending ())
2694 (*local_timeout
) -= SELECT_PAUSE
;
2696 /* Reset the old alarm if there was one. */
2697 turn_on_atimers (1);
2699 if (*local_timeout
== 0) /* Stop on timer being cleared */
2704 #endif /* not WINDOWSNT */
2706 /* Read keyboard input into the standard buffer,
2707 waiting for at least one character. */
2710 read_input_waiting ()
2712 /* XXX This needs to be updated for multi-tty support. Is there
2713 anybody who needs to emulate select these days? */
2715 extern int quit_char
;
2717 if (read_socket_hook
)
2719 struct input_event hold_quit
;
2721 EVENT_INIT (hold_quit
);
2722 hold_quit
.kind
= NO_EVENT
;
2724 read_alarm_should_throw
= 0;
2725 if (! setjmp (read_alarm_throw
))
2726 nread
= (*read_socket_hook
) (0, 1, &hold_quit
);
2730 if (hold_quit
.kind
!= NO_EVENT
)
2731 kbd_buffer_store_event (&hold_quit
);
2735 struct input_event e
;
2737 nread
= read (fileno (stdin
), buf
, 1);
2740 /* Scan the chars for C-g and store them in kbd_buffer. */
2741 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2742 e
.frame_or_window
= selected_frame
;
2744 for (i
= 0; i
< nread
; i
++)
2746 /* Convert chars > 0177 to meta events if desired.
2747 We do this under the same conditions that read_avail_input does. */
2748 if (read_socket_hook
== 0)
2750 /* If the user says she has a meta key, then believe her. */
2751 if (meta_key
== 1 && (buf
[i
] & 0x80))
2752 e
.modifiers
= meta_modifier
;
2757 XSETINT (e
.code
, buf
[i
]);
2758 kbd_buffer_store_event (&e
);
2759 /* Don't look at input that follows a C-g too closely.
2760 This reduces lossage due to autorepeat on C-g. */
2761 if (buf
[i
] == quit_char
)
2767 #if !defined (HAVE_SELECT)
2768 #define select sys_select
2771 #endif /* not HAVE_SELECT */
2772 #endif /* not VMS */
2773 #endif /* not MSDOS */
2782 lmode
= LINTRUP
| lmode
;
2783 ioctl (fd
, TIOCLSET
, &lmode
);
2792 lmode
= ~LINTRUP
& lmode
;
2793 ioctl (fd
, TIOCLSET
, &lmode
);
2803 interrupts_deferred
= 0;
2813 interrupts_deferred
= 1;
2816 /* still inside #ifdef BSD4_1 */
2819 int sigheld
; /* Mask of held signals */
2825 sigheld
|= sigbit (signum
);
2833 sigheld
|= sigbit (signum
);
2840 sigheld
&= ~sigbit (signum
);
2845 sigfree () /* Free all held signals */
2848 for (i
= 0; i
< NSIG
; i
++)
2849 if (sigheld
& sigbit (i
))
2857 return 1 << (i
- 1);
2859 #endif /* subprocesses */
2862 /* POSIX signals support - DJB */
2863 /* Anyone with POSIX signals should have ANSI C declarations */
2865 #ifdef POSIX_SIGNALS
2867 sigset_t empty_mask
, full_mask
;
2870 sys_signal (int signal_number
, signal_handler_t action
)
2872 struct sigaction new_action
, old_action
;
2873 sigemptyset (&new_action
.sa_mask
);
2874 new_action
.sa_handler
= action
;
2875 #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) && !defined(SYNC_INPUT)
2876 /* Emacs mostly works better with restartable system services. If this
2877 flag exists, we probably want to turn it on here.
2878 However, on some systems this resets the timeout of `select'
2879 which means that `select' never finishes if it keeps getting signals.
2880 BROKEN_SA_RESTART is defined on those systems. */
2881 /* It's not clear why the comment above says "mostly works better". --Stef
2882 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
2883 for pending input so we need long-running syscalls to be interrupted
2884 after a signal that sets the interrupt_input_pending flag. */
2885 new_action
.sa_flags
= SA_RESTART
;
2887 new_action
.sa_flags
= 0;
2889 sigaction (signal_number
, &new_action
, &old_action
);
2890 return (old_action
.sa_handler
);
2894 /* If we're compiling with GCC, we don't need this function, since it
2895 can be written as a macro. */
2897 sys_sigmask (int sig
)
2900 sigemptyset (&mask
);
2901 sigaddset (&mask
, sig
);
2906 /* I'd like to have these guys return pointers to the mask storage in here,
2907 but there'd be trouble if the code was saving multiple masks. I'll be
2908 safe and pass the structure. It normally won't be more than 2 bytes
2912 sys_sigblock (sigset_t new_mask
)
2915 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2920 sys_sigunblock (sigset_t new_mask
)
2923 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2928 sys_sigsetmask (sigset_t new_mask
)
2931 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2935 #endif /* POSIX_SIGNALS */
2937 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2938 static char *my_sys_siglist
[NSIG
];
2942 # define sys_siglist my_sys_siglist
2948 #ifdef POSIX_SIGNALS
2949 sigemptyset (&empty_mask
);
2950 sigfillset (&full_mask
);
2953 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2957 sys_siglist
[SIGABRT
] = "Aborted";
2960 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2963 sys_siglist
[SIGALRM
] = "Alarm clock";
2966 sys_siglist
[SIGBUS
] = "Bus error";
2969 sys_siglist
[SIGCLD
] = "Child status changed";
2972 sys_siglist
[SIGCHLD
] = "Child status changed";
2975 sys_siglist
[SIGCONT
] = "Continued";
2978 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2981 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2984 sys_siglist
[SIGEMT
] = "Emulation trap";
2987 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2990 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2993 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
2996 sys_siglist
[SIGHUP
] = "Hangup";
2999 sys_siglist
[SIGILL
] = "Illegal instruction";
3002 sys_siglist
[SIGINT
] = "Interrupt";
3005 sys_siglist
[SIGIO
] = "I/O possible";
3008 sys_siglist
[SIGIOINT
] = "I/O intervention required";
3011 sys_siglist
[SIGIOT
] = "IOT trap";
3014 sys_siglist
[SIGKILL
] = "Killed";
3017 sys_siglist
[SIGLOST
] = "Resource lost";
3020 sys_siglist
[SIGLWP
] = "SIGLWP";
3023 sys_siglist
[SIGMSG
] = "Monitor mode data available";
3026 sys_siglist
[SIGWIND
] = "SIGPHONE";
3029 sys_siglist
[SIGPIPE
] = "Broken pipe";
3032 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
3035 sys_siglist
[SIGPROF
] = "Profiling timer expired";
3038 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
3041 sys_siglist
[SIGPWR
] = "Power-fail restart";
3044 sys_siglist
[SIGQUIT
] = "Quit";
3047 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
3050 sys_siglist
[SIGSAK
] = "Secure attention";
3053 sys_siglist
[SIGSEGV
] = "Segmentation violation";
3056 sys_siglist
[SIGSOUND
] = "Sound completed";
3059 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
3062 sys_siglist
[SIGSTP
] = "Stopped (user)";
3065 sys_siglist
[SIGSYS
] = "Bad argument to system call";
3068 sys_siglist
[SIGTERM
] = "Terminated";
3071 sys_siglist
[SIGTHAW
] = "SIGTHAW";
3074 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
3077 sys_siglist
[SIGTSTP
] = "Stopped (user)";
3080 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
3083 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
3086 sys_siglist
[SIGURG
] = "Urgent I/O condition";
3089 sys_siglist
[SIGUSR1
] = "User defined signal 1";
3092 sys_siglist
[SIGUSR2
] = "User defined signal 2";
3095 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
3098 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
3101 sys_siglist
[SIGWINCH
] = "Window size changed";
3104 sys_siglist
[SIGWIND
] = "SIGWIND";
3107 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
3110 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
3113 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
3122 /* Figure out how many bits the system's random number generator uses.
3123 `random' and `lrand48' are assumed to return 31 usable bits.
3124 BSD `rand' returns a 31 bit value but the low order bits are unusable;
3125 so we'll shift it and treat it like the 15-bit USG `rand'. */
3129 # define RAND_BITS 31
3130 # else /* !HAVE_RANDOM */
3131 # ifdef HAVE_LRAND48
3132 # define RAND_BITS 31
3133 # define random lrand48
3134 # else /* !HAVE_LRAND48 */
3135 # define RAND_BITS 15
3136 # if RAND_MAX == 32767
3137 # define random rand
3138 # else /* RAND_MAX != 32767 */
3139 # if RAND_MAX == 2147483647
3140 # define random() (rand () >> 16)
3141 # else /* RAND_MAX != 2147483647 */
3143 # define random rand
3145 # define random() (rand () >> 16)
3147 # endif /* RAND_MAX != 2147483647 */
3148 # endif /* RAND_MAX != 32767 */
3149 # endif /* !HAVE_LRAND48 */
3150 # endif /* !HAVE_RANDOM */
3151 #endif /* !RAND_BITS */
3158 srandom ((unsigned int)arg
);
3160 # ifdef HAVE_LRAND48
3163 srand ((unsigned int)arg
);
3169 * Build a full Emacs-sized word out of whatever we've got.
3170 * This suffices even for a 64-bit architecture with a 15-bit rand.
3175 long val
= random ();
3176 #if VALBITS > RAND_BITS
3177 val
= (val
<< RAND_BITS
) ^ random ();
3178 #if VALBITS > 2*RAND_BITS
3179 val
= (val
<< RAND_BITS
) ^ random ();
3180 #if VALBITS > 3*RAND_BITS
3181 val
= (val
<< RAND_BITS
) ^ random ();
3182 #if VALBITS > 4*RAND_BITS
3183 val
= (val
<< RAND_BITS
) ^ random ();
3184 #endif /* need at least 5 */
3185 #endif /* need at least 4 */
3186 #endif /* need at least 3 */
3187 #endif /* need at least 2 */
3188 return val
& ((1L << VALBITS
) - 1);
3194 /* If any place else asks for the TERM variable,
3195 allow it to be overridden with the EMACS_TERM variable
3196 before attempting to translate the logical name TERM. As a last
3197 resort, ask for VAX C's special idea of the TERM variable. */
3204 static char buf
[256];
3205 static struct dsc$descriptor_s equiv
3206 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3207 static struct dsc$descriptor_s d_name
3208 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3211 if (!strcmp (name
, "TERM"))
3213 val
= (char *) getenv ("EMACS_TERM");
3218 d_name
.dsc$w_length
= strlen (name
);
3219 d_name
.dsc$a_pointer
= name
;
3220 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3222 char *str
= (char *) xmalloc (eqlen
+ 1);
3223 bcopy (buf
, str
, eqlen
);
3225 /* This is a storage leak, but a pain to fix. With luck,
3226 no one will ever notice. */
3229 return (char *) getenv (name
);
3234 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3235 to force a call on the debugger from within the image. */
3239 reset_all_sys_modes ();
3240 LIB$
SIGNAL (SS$_DEBUG
);
3246 #ifdef LINK_CRTL_SHARE
3247 #ifdef SHARABLE_LIB_BUG
3248 /* Variables declared noshare and initialized in sharable libraries
3249 cannot be shared. The VMS linker incorrectly forces you to use a private
3250 version which is uninitialized... If not for this "feature", we
3251 could use the C library definition of sys_nerr and sys_errlist. */
3253 char *sys_errlist
[] =
3257 "no such file or directory",
3259 "interrupted system call",
3261 "no such device or address",
3262 "argument list too long",
3263 "exec format error",
3266 "no more processes",
3267 "not enough memory",
3268 "permission denied",
3270 "block device required",
3271 "mount devices busy",
3273 "cross-device link",
3278 "file table overflow",
3279 "too many open files",
3283 "no space left on device",
3285 "read-only file system",
3291 "vax/vms specific error code nontranslatable error"
3293 #endif /* SHARABLE_LIB_BUG */
3294 #endif /* LINK_CRTL_SHARE */
3297 #ifndef HAVE_STRERROR
3303 extern char *sys_errlist
[];
3304 extern int sys_nerr
;
3306 if (errnum
>= 0 && errnum
< sys_nerr
)
3307 return sys_errlist
[errnum
];
3308 return (char *) "Unknown error";
3310 #endif /* not WINDOWSNT */
3311 #endif /* ! HAVE_STRERROR */
3314 emacs_open (path
, oflag
, mode
)
3318 register int rtnval
;
3321 if (oflag
& O_CREAT
)
3322 return creat (path
, mode
);
3325 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3326 && (errno
== EINTR
))
3336 register int rtnval
;
3338 #if defined (MAC_OSX) && defined (HAVE_CARBON)
3340 extern int mac_try_close_socket
P_ ((int));
3342 if (mac_try_close_socket (fd
))
3347 while ((rtnval
= close (fd
)) == -1
3348 && (errno
== EINTR
))
3351 /* If close is interrupted SunOS 4.1 may or may not have closed the
3352 file descriptor. If it did the second close will fail with
3353 errno = EBADF. That means we have succeeded. */
3354 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3361 emacs_read (fildes
, buf
, nbyte
)
3366 register int rtnval
;
3368 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3369 && (errno
== EINTR
))
3375 emacs_write (fildes
, buf
, nbyte
)
3380 register int rtnval
, bytes_written
;
3386 rtnval
= write (fildes
, buf
, nbyte
);
3393 /* I originally used `QUIT' but that might causes files to
3394 be truncated if you hit C-g in the middle of it. --Stef */
3395 if (interrupt_input_pending
)
3396 handle_async_input ();
3397 if (pending_atimers
)
3398 do_pending_atimers ();
3403 return (bytes_written
? bytes_written
: -1);
3408 bytes_written
+= rtnval
;
3410 return (bytes_written
);
3415 * All of the following are for USG.
3417 * On USG systems the system calls are INTERRUPTIBLE by signals
3418 * that the user program has elected to catch. Thus the system call
3419 * must be retried in these cases. To handle this without massive
3420 * changes in the source code, we remap the standard system call names
3421 * to names for our own functions in sysdep.c that do the system call
3422 * with retries. Actually, for portability reasons, it is good
3423 * programming practice, as this example shows, to limit all actual
3424 * system calls to a single occurrence in the source. Sure, this
3425 * adds an extra level of function call overhead but it is almost
3426 * always negligible. Fred Fish, Unisoft Systems Inc.
3430 * Warning, this function may not duplicate 4.2 action properly
3431 * under error conditions.
3435 /* In 4.1, param.h fails to define this. */
3436 #define MAXPATHLEN 1024
3445 char *npath
, *spath
;
3446 extern char *getcwd ();
3448 BLOCK_INPUT
; /* getcwd uses malloc */
3449 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3455 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3456 up to first slash. Should be harmless on other systems. */
3457 while (*npath
&& *npath
!= '/')
3459 strcpy (pathname
, npath
);
3460 free (spath
); /* getcwd uses malloc */
3465 #endif /* HAVE_GETWD */
3468 * Emulate rename using unlink/link. Note that this is
3469 * only partially correct. Also, doesn't enforce restriction
3470 * that files be of same type (regular->regular, dir->dir, etc).
3479 if (access (from
, 0) == 0)
3482 if (link (from
, to
) == 0)
3483 if (unlink (from
) == 0)
3495 /* HPUX curses library references perror, but as far as we know
3496 it won't be called. Anyway this definition will do for now. */
3502 #endif /* not HAVE_PERROR */
3508 * Emulate BSD dup2. First close newd if it already exists.
3509 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3510 * until we are, then close the unsuccessful ones.
3517 register int fd
, ret
;
3522 return fcntl (oldd
, F_DUPFD
, newd
);
3529 ret
= dup2 (old
,new);
3535 #endif /* not HAVE_DUP2 */
3538 * Gettimeofday. Simulate as much as possible. Only accurate
3539 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3540 * Only needed when subprocesses are defined.
3545 #ifndef HAVE_GETTIMEOFDAY
3550 gettimeofday (tp
, tzp
)
3552 struct timezone
*tzp
;
3554 extern long time ();
3556 tp
->tv_sec
= time ((long *)0);
3559 tzp
->tz_minuteswest
= -1;
3566 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3569 * This function will go away as soon as all the stubs fixed. (fnf)
3576 printf ("%s not yet implemented\r\n", badfunc
);
3577 reset_all_sys_modes ();
3583 /* Directory routines for systems that don't have them. */
3585 #ifdef SYSV_SYSTEM_DIR
3589 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3593 register DIR *dirp
; /* stream from opendir */
3597 rtnval
= emacs_close (dirp
->dd_fd
);
3599 /* Some systems (like Solaris) allocate the buffer and the DIR all
3600 in one block. Why in the world are we freeing this ourselves
3602 #if ! (defined (sun) && defined (USG5_4))
3603 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3605 xfree ((char *) dirp
);
3609 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3610 #endif /* SYSV_SYSTEM_DIR */
3612 #ifdef NONSYSTEM_DIR_LIBRARY
3616 char *filename
; /* name of directory */
3618 register DIR *dirp
; /* -> malloc'ed storage */
3619 register int fd
; /* file descriptor for read */
3620 struct stat sbuf
; /* result of fstat */
3622 fd
= emacs_open (filename
, O_RDONLY
, 0);
3627 if (fstat (fd
, &sbuf
) < 0
3628 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3629 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3633 return 0; /* bad luck today */
3638 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3645 register DIR *dirp
; /* stream from opendir */
3647 emacs_close (dirp
->dd_fd
);
3648 xfree ((char *) dirp
);
3656 ino_t od_ino
; /* inode */
3657 char od_name
[DIRSIZ
]; /* filename */
3659 #endif /* not VMS */
3661 struct direct dir_static
; /* simulated directory contents */
3666 register DIR *dirp
; /* stream from opendir */
3669 register struct olddir
*dp
; /* -> directory data */
3671 register struct dir$_name
*dp
; /* -> directory data */
3672 register struct dir$_version
*dv
; /* -> version data */
3677 if (dirp
->dd_loc
>= dirp
->dd_size
)
3678 dirp
->dd_loc
= dirp
->dd_size
= 0;
3680 if (dirp
->dd_size
== 0 /* refill buffer */
3681 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3685 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3686 dirp
->dd_loc
+= sizeof (struct olddir
);
3688 if (dp
->od_ino
!= 0) /* not deleted entry */
3690 dir_static
.d_ino
= dp
->od_ino
;
3691 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3692 dir_static
.d_name
[DIRSIZ
] = '\0';
3693 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3694 dir_static
.d_reclen
= sizeof (struct direct
)
3696 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3697 return &dir_static
; /* -> simulated structure */
3700 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3701 if (dirp
->dd_loc
== 0)
3702 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3703 : dp
->dir$b_namecount
;
3704 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3705 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3706 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3707 dir_static
.d_reclen
= sizeof (struct direct
)
3709 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3710 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3711 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3712 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3719 /* readdirver is just like readdir except it returns all versions of a file
3720 as separate entries. */
3725 register DIR *dirp
; /* stream from opendir */
3727 register struct dir$_name
*dp
; /* -> directory data */
3728 register struct dir$_version
*dv
; /* -> version data */
3730 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3731 dirp
->dd_loc
= dirp
->dd_size
= 0;
3733 if (dirp
->dd_size
== 0 /* refill buffer */
3734 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3737 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3738 if (dirp
->dd_loc
== 0)
3739 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3740 : dp
->dir$b_namecount
;
3741 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3742 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3743 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3744 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3745 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3746 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3747 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3748 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3754 #endif /* NONSYSTEM_DIR_LIBRARY */
3758 set_file_times (filename
, atime
, mtime
)
3759 const char *filename
;
3760 EMACS_TIME atime
, mtime
;
3763 struct timeval tv
[2];
3766 return utimes (filename
, tv
);
3767 #else /* not HAVE_UTIMES */
3769 utb
.actime
= EMACS_SECS (atime
);
3770 utb
.modtime
= EMACS_SECS (mtime
);
3771 return utime (filename
, &utb
);
3772 #endif /* not HAVE_UTIMES */
3775 /* mkdir and rmdir functions, for systems which don't have them. */
3779 * Written by Robert Rother, Mariah Corporation, August 1985.
3781 * If you want it, it's yours. All I ask in return is that if you
3782 * figure out how to do this in a Bourne Shell script you send me
3784 * sdcsvax!rmr or rmr@uscd
3786 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3787 * subroutine. 11Mar86; hoptoad!gnu
3789 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3790 * subroutine didn't return EEXIST. It does now.
3796 #ifdef MKDIR_PROTOTYPE
3800 mkdir (dpath
, dmode
)
3805 int cpid
, status
, fd
;
3806 struct stat statbuf
;
3808 if (stat (dpath
, &statbuf
) == 0)
3810 errno
= EEXIST
; /* Stat worked, so it already exists */
3814 /* If stat fails for a reason other than non-existence, return error */
3815 if (errno
!= ENOENT
)
3818 synch_process_alive
= 1;
3819 switch (cpid
= fork ())
3822 case -1: /* Error in fork */
3823 return (-1); /* Errno is set already */
3825 case 0: /* Child process */
3827 * Cheap hack to set mode of new directory. Since this
3828 * child process is going away anyway, we zap its umask.
3829 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3830 * directory. Does anybody care?
3832 status
= umask (0); /* Get current umask */
3833 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3834 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3841 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3842 _exit (-1); /* Can't exec /bin/mkdir */
3844 default: /* Parent process */
3845 wait_for_termination (cpid
);
3848 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3849 || synch_process_termsig
!= 0)
3851 errno
= EIO
; /* We don't know why, but */
3852 return -1; /* /bin/mkdir failed */
3857 #endif /* not HAVE_MKDIR */
3864 int cpid
, status
, fd
;
3865 struct stat statbuf
;
3867 if (stat (dpath
, &statbuf
) != 0)
3869 /* Stat just set errno. We don't have to */
3873 synch_process_alive
= 1;
3874 switch (cpid
= fork ())
3877 case -1: /* Error in fork */
3878 return (-1); /* Errno is set already */
3880 case 0: /* Child process */
3881 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3888 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3889 _exit (-1); /* Can't exec /bin/rmdir */
3891 default: /* Parent process */
3892 wait_for_termination (cpid
);
3895 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3896 || synch_process_termsig
!= 0)
3898 errno
= EIO
; /* We don't know why, but */
3899 return -1; /* /bin/rmdir failed */
3904 #endif /* !HAVE_RMDIR */
3908 /* Functions for VMS */
3914 /* Return as a string the VMS error string pertaining to STATUS.
3915 Reuses the same static buffer each time it is called. */
3919 int status
; /* VMS status code */
3923 static char buf
[257];
3925 bufadr
[0] = sizeof buf
- 1;
3926 bufadr
[1] = (int) buf
;
3927 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3928 return "untranslatable VMS error status";
3936 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3937 * not work correctly. (It also doesn't work well in version 2.3.)
3942 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3943 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3947 unsigned short s_buflen
;
3948 unsigned short s_code
;
3950 unsigned short *s_retlenadr
;
3954 #define buflen s.s_buflen
3955 #define code s.s_code
3956 #define bufadr s.s_bufadr
3957 #define retlenadr s.s_retlenadr
3959 #define R_OK 4 /* test for read permission */
3960 #define W_OK 2 /* test for write permission */
3961 #define X_OK 1 /* test for execute (search) permission */
3962 #define F_OK 0 /* test for presence of file */
3965 sys_access (path
, mode
)
3969 static char *user
= NULL
;
3972 /* translate possible directory spec into .DIR file name, so brain-dead
3973 * access can treat the directory like a file. */
3974 if (directory_file_name (path
, dir_fn
))
3978 return access (path
, mode
);
3979 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3985 unsigned short int dummy
;
3987 static int constant
= ACL$C_FILE
;
3988 DESCRIPTOR (path_desc
, path
);
3989 DESCRIPTOR (user_desc
, user
);
3993 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3996 acces
|= CHP$M_READ
;
3998 acces
|= CHP$M_WRITE
;
3999 itemlst
[0].buflen
= sizeof (int);
4000 itemlst
[0].code
= CHP$_FLAGS
;
4001 itemlst
[0].bufadr
= (char *) &flags
;
4002 itemlst
[0].retlenadr
= &dummy
;
4003 itemlst
[1].buflen
= sizeof (int);
4004 itemlst
[1].code
= CHP$_ACCESS
;
4005 itemlst
[1].bufadr
= (char *) &acces
;
4006 itemlst
[1].retlenadr
= &dummy
;
4007 itemlst
[2].end
= CHP$_END
;
4008 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
4009 return stat
== SS$_NORMAL
? 0 : -1;
4013 #else /* not VMS4_4 */
4016 #define ACE$M_WRITE 2
4017 #define ACE$C_KEYID 1
4019 static unsigned short memid
, grpid
;
4020 static unsigned int uic
;
4022 /* Called from init_sys_modes, so it happens not very often
4023 but at least each time Emacs is loaded. */
4025 sys_access_reinit ()
4031 sys_access (filename
, type
)
4037 int status
, size
, i
, typecode
, acl_controlled
;
4038 unsigned int *aclptr
, *aclend
, aclbuf
[60];
4039 union prvdef prvmask
;
4041 /* Get UIC and GRP values for protection checking. */
4044 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
4047 memid
= uic
& 0xFFFF;
4051 if (type
!= 2) /* not checking write access */
4052 return access (filename
, type
);
4054 /* Check write protection. */
4056 #define CHECKPRIV(bit) (prvmask.bit)
4057 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
4059 /* Find privilege bits */
4060 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
4062 error ("Unable to find privileges: %s", vmserrstr (status
));
4063 if (CHECKPRIV (PRV$V_BYPASS
))
4064 return 0; /* BYPASS enabled */
4066 fab
.fab$b_fac
= FAB$M_GET
;
4067 fab
.fab$l_fna
= filename
;
4068 fab
.fab$b_fns
= strlen (filename
);
4069 fab
.fab$l_xab
= &xab
;
4070 xab
= cc$rms_xabpro
;
4071 xab
.xab$l_aclbuf
= aclbuf
;
4072 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
4073 status
= SYS$
OPEN (&fab
, 0, 0);
4076 SYS$
CLOSE (&fab
, 0, 0);
4077 /* Check system access */
4078 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
4080 /* Check ACL entries, if any */
4082 if (xab
.xab$w_acllen
> 0)
4085 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
4086 while (*aclptr
&& aclptr
< aclend
)
4088 size
= (*aclptr
& 0xff) / 4;
4089 typecode
= (*aclptr
>> 8) & 0xff;
4090 if (typecode
== ACE$C_KEYID
)
4091 for (i
= size
- 1; i
> 1; i
--)
4092 if (aclptr
[i
] == uic
)
4095 if (aclptr
[1] & ACE$M_WRITE
)
4096 return 0; /* Write access through ACL */
4098 aclptr
= &aclptr
[size
];
4100 if (acl_controlled
) /* ACL specified, prohibits write access */
4103 /* No ACL entries specified, check normal protection */
4104 if (WRITABLE (XAB$V_WLD
)) /* World writable */
4106 if (WRITABLE (XAB$V_GRP
) &&
4107 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
4108 return 0; /* Group writable */
4109 if (WRITABLE (XAB$V_OWN
) &&
4110 (xab
.xab$l_uic
& 0xFFFF) == memid
)
4111 return 0; /* Owner writable */
4113 return -1; /* Not writable */
4115 #endif /* not VMS4_4 */
4118 static char vtbuf
[NAM$C_MAXRSS
+1];
4120 /* translate a vms file spec to a unix path */
4122 sys_translate_vms (vfile
)
4133 /* leading device or logical name is a root directory */
4134 if (p
= strchr (vfile
, ':'))
4143 if (*p
== '[' || *p
== '<')
4145 while (*++vfile
!= *p
+ 2)
4149 if (vfile
[-1] == *p
)
4172 static char utbuf
[NAM$C_MAXRSS
+1];
4174 /* translate a unix path to a VMS file spec */
4176 sys_translate_unix (ufile
)
4199 if (index (&ufile
[1], '/'))
4206 if (index (&ufile
[1], '/'))
4213 if (strncmp (ufile
, "./", 2) == 0)
4220 ufile
++; /* skip the dot */
4221 if (index (&ufile
[1], '/'))
4226 else if (strncmp (ufile
, "../", 3) == 0)
4234 ufile
+= 2; /* skip the dots */
4235 if (index (&ufile
[1], '/'))
4260 extern char *getcwd ();
4262 #define MAXPATHLEN 1024
4264 ptr
= xmalloc (MAXPATHLEN
);
4265 val
= getcwd (ptr
, MAXPATHLEN
);
4271 strcpy (pathname
, ptr
);
4280 long item_code
= JPI$_OWNER
;
4281 unsigned long parent_id
;
4284 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4287 vaxc$errno
= status
;
4297 return (getgid () << 16) | getuid ();
4302 sys_read (fildes
, buf
, nbyte
)
4307 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4312 sys_write (fildes
, buf
, nbyte
)
4317 register int nwrote
, rtnval
= 0;
4319 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4325 return rtnval
? rtnval
: -1;
4326 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4327 return rtnval
? rtnval
: -1;
4328 return (rtnval
+ nwrote
);
4333 * VAX/VMS VAX C RTL really loses. It insists that records
4334 * end with a newline (carriage return) character, and if they
4335 * don't it adds one (nice of it isn't it!)
4337 * Thus we do this stupidity below.
4342 sys_write (fildes
, buf
, nbytes
)
4345 unsigned int nbytes
;
4352 fstat (fildes
, &st
);
4358 /* Handle fixed-length files with carriage control. */
4359 if (st
.st_fab_rfm
== FAB$C_FIX
4360 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4362 len
= st
.st_fab_mrs
;
4363 retval
= write (fildes
, p
, min (len
, nbytes
));
4366 retval
++; /* This skips the implied carriage control */
4370 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4371 while (*e
!= '\n' && e
> p
) e
--;
4372 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4373 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4375 retval
= write (fildes
, p
, len
);
4386 /* Create file NEW copying its attributes from file OLD. If
4387 OLD is 0 or does not exist, create based on the value of
4390 /* Protection value the file should ultimately have.
4391 Set by create_copy_attrs, and use by rename_sansversions. */
4392 static unsigned short int fab_final_pro
;
4395 creat_copy_attrs (old
, new)
4398 struct FAB fab
= cc$rms_fab
;
4399 struct XABPRO xabpro
;
4400 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4401 extern int vms_stmlf_recfm
;
4405 fab
.fab$b_fac
= FAB$M_GET
;
4406 fab
.fab$l_fna
= old
;
4407 fab
.fab$b_fns
= strlen (old
);
4408 fab
.fab$l_xab
= (char *) &xabpro
;
4409 xabpro
= cc$rms_xabpro
;
4410 xabpro
.xab$l_aclbuf
= aclbuf
;
4411 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4412 /* Call $OPEN to fill in the fab & xabpro fields. */
4413 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4415 SYS$
CLOSE (&fab
, 0, 0);
4416 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4417 if (xabpro
.xab$w_acllen
> 0)
4419 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4420 /* If the acl buffer was too short, redo open with longer one.
4421 Wouldn't need to do this if there were some system imposed
4422 limit on the size of an ACL, but I can't find any such. */
4424 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4425 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4426 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4427 SYS$
CLOSE (&fab
, 0, 0);
4433 xabpro
.xab$l_aclbuf
= 0;
4438 fab
.fab$l_fna
= new;
4439 fab
.fab$b_fns
= strlen (new);
4443 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4444 fab
.fab$b_rat
= FAB$M_CR
;
4447 /* Set the file protections such that we will be able to manipulate
4448 this file. Once we are done writing and renaming it, we will set
4449 the protections back. */
4451 fab_final_pro
= xabpro
.xab$w_pro
;
4453 SYS$
SETDFPROT (0, &fab_final_pro
);
4454 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4456 /* Create the new file with either default attrs or attrs copied
4458 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4460 SYS$
CLOSE (&fab
, 0, 0);
4461 /* As this is a "replacement" for creat, return a file descriptor
4462 opened for writing. */
4463 return open (new, O_WRONLY
);
4468 #include <varargs.h>
4471 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4476 sys_creat (va_alist
)
4479 va_list list_incrementer
;
4482 int rfd
; /* related file descriptor */
4483 int fd
; /* Our new file descriptor */
4490 extern int vms_stmlf_recfm
;
4493 va_start (list_incrementer
);
4494 name
= va_arg (list_incrementer
, char *);
4495 mode
= va_arg (list_incrementer
, int);
4497 rfd
= va_arg (list_incrementer
, int);
4498 va_end (list_incrementer
);
4501 /* Use information from the related file descriptor to set record
4502 format of the newly created file. */
4503 fstat (rfd
, &st_buf
);
4504 switch (st_buf
.st_fab_rfm
)
4507 strcpy (rfm
, "rfm = fix");
4508 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4509 strcpy (rat
, "rat = ");
4510 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4512 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4513 strcat (rat
, "ftn");
4514 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4515 strcat (rat
, "prn");
4516 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4517 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4518 strcat (rat
, ", blk");
4520 strcat (rat
, "blk");
4521 return creat (name
, 0, rfm
, rat
, mrs
);
4524 strcpy (rfm
, "rfm = vfc");
4525 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4526 strcpy (rat
, "rat = ");
4527 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4529 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4530 strcat (rat
, "ftn");
4531 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4532 strcat (rat
, "prn");
4533 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4534 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4535 strcat (rat
, ", blk");
4537 strcat (rat
, "blk");
4538 return creat (name
, 0, rfm
, rat
, fsz
);
4541 strcpy (rfm
, "rfm = stm");
4545 strcpy (rfm
, "rfm = stmcr");
4549 strcpy (rfm
, "rfm = stmlf");
4553 strcpy (rfm
, "rfm = udf");
4557 strcpy (rfm
, "rfm = var");
4560 strcpy (rat
, "rat = ");
4561 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4563 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4564 strcat (rat
, "ftn");
4565 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4566 strcat (rat
, "prn");
4567 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4568 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4569 strcat (rat
, ", blk");
4571 strcat (rat
, "blk");
4575 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4576 strcpy (rat
, "rat=cr");
4578 /* Until the VAX C RTL fixes the many bugs with modes, always use
4579 mode 0 to get the user's default protection. */
4580 fd
= creat (name
, 0, rfm
, rat
);
4581 if (fd
< 0 && errno
== EEXIST
)
4583 if (unlink (name
) < 0)
4584 report_file_error ("delete", build_string (name
));
4585 fd
= creat (name
, 0, rfm
, rat
);
4591 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4593 sys_fwrite (ptr
, size
, num
, fp
)
4594 register char * ptr
;
4597 register int tot
= num
* size
;
4605 * The VMS C library routine creat actually creates a new version of an
4606 * existing file rather than truncating the old version. There are times
4607 * when this is not the desired behavior, for instance, when writing an
4608 * auto save file (you only want one version), or when you don't have
4609 * write permission in the directory containing the file (but the file
4610 * itself is writable). Hence this routine, which is equivalent to
4611 * "close (creat (fn, 0));" on Unix if fn already exists.
4617 struct FAB xfab
= cc$rms_fab
;
4618 struct RAB xrab
= cc$rms_rab
;
4621 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4622 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4623 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4624 xfab
.fab$l_fna
= fn
;
4625 xfab
.fab$b_fns
= strlen (fn
);
4626 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4628 xrab
.rab$l_fab
= &xfab
;
4630 /* This gibberish opens the file, positions to the first record, and
4631 deletes all records from there until the end of file. */
4632 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4634 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4635 (SYS$
FIND (&xrab
) & 01) == 01 &&
4636 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4647 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4648 SYSPRV or a readable SYSUAF.DAT. */
4654 * Routine to read the VMS User Authorization File and return
4655 * a specific user's record.
4658 static struct UAF retuaf
;
4661 get_uaf_name (uname
)
4668 uaf_fab
= cc$rms_fab
;
4669 uaf_rab
= cc$rms_rab
;
4670 /* initialize fab fields */
4671 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4672 uaf_fab
.fab$b_fns
= 21;
4673 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4674 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4675 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4676 /* initialize rab fields */
4677 uaf_rab
.rab$l_fab
= &uaf_fab
;
4678 /* open the User Authorization File */
4679 status
= SYS$
OPEN (&uaf_fab
);
4683 vaxc$errno
= status
;
4686 status
= SYS$
CONNECT (&uaf_rab
);
4690 vaxc$errno
= status
;
4693 /* read the requested record - index is in uname */
4694 uaf_rab
.rab$l_kbf
= uname
;
4695 uaf_rab
.rab$b_ksz
= strlen (uname
);
4696 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4697 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4698 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4699 status
= SYS$
GET (&uaf_rab
);
4703 vaxc$errno
= status
;
4706 /* close the User Authorization File */
4707 status
= SYS$
DISCONNECT (&uaf_rab
);
4711 vaxc$errno
= status
;
4714 status
= SYS$
CLOSE (&uaf_fab
);
4718 vaxc$errno
= status
;
4732 uaf_fab
= cc$rms_fab
;
4733 uaf_rab
= cc$rms_rab
;
4734 /* initialize fab fields */
4735 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4736 uaf_fab
.fab$b_fns
= 21;
4737 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4738 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4739 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4740 /* initialize rab fields */
4741 uaf_rab
.rab$l_fab
= &uaf_fab
;
4742 /* open the User Authorization File */
4743 status
= SYS$
OPEN (&uaf_fab
);
4747 vaxc$errno
= status
;
4750 status
= SYS$
CONNECT (&uaf_rab
);
4754 vaxc$errno
= status
;
4757 /* read the requested record - index is in uic */
4758 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4759 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4760 uaf_rab
.rab$b_ksz
= sizeof uic
;
4761 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4762 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4763 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4764 status
= SYS$
GET (&uaf_rab
);
4768 vaxc$errno
= status
;
4771 /* close the User Authorization File */
4772 status
= SYS$
DISCONNECT (&uaf_rab
);
4776 vaxc$errno
= status
;
4779 status
= SYS$
CLOSE (&uaf_fab
);
4783 vaxc$errno
= status
;
4789 static struct passwd retpw
;
4797 /* copy these out first because if the username is 32 chars, the next
4798 section will overwrite the first byte of the UIC */
4799 retpw
.pw_uid
= up
->uaf$w_mem
;
4800 retpw
.pw_gid
= up
->uaf$w_grp
;
4802 /* I suppose this is not the best style, to possibly overwrite one
4803 byte beyond the end of the field, but what the heck... */
4804 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4805 while (ptr
[-1] == ' ')
4808 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4810 /* the rest of these are counted ascii strings */
4811 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4812 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4813 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4814 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4815 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4816 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4817 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4818 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4822 #else /* not READ_SYSUAF */
4823 static struct passwd retpw
;
4824 #endif /* not READ_SYSUAF */
4835 unsigned char * full
;
4836 #endif /* READ_SYSUAF */
4841 if ('a' <= *ptr
&& *ptr
<= 'z')
4846 if (!(up
= get_uaf_name (name
)))
4848 return cnv_uaf_pw (up
);
4850 if (strcmp (name
, getenv ("USER")) == 0)
4852 retpw
.pw_uid
= getuid ();
4853 retpw
.pw_gid
= getgid ();
4854 strcpy (retpw
.pw_name
, name
);
4855 if (full
= egetenv ("FULLNAME"))
4856 strcpy (retpw
.pw_gecos
, full
);
4858 *retpw
.pw_gecos
= '\0';
4859 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4860 *retpw
.pw_shell
= '\0';
4865 #endif /* not READ_SYSUAF */
4875 if (!(up
= get_uaf_uic (uid
)))
4877 return cnv_uaf_pw (up
);
4879 if (uid
== sys_getuid ())
4880 return getpwnam (egetenv ("USER"));
4883 #endif /* not READ_SYSUAF */
4886 /* return total address space available to the current process. This is
4887 the sum of the current p0 size, p1 size and free page table entries
4893 unsigned long free_pages
;
4894 unsigned long frep0va
;
4895 unsigned long frep1va
;
4898 item_code
= JPI$_FREPTECNT
;
4899 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4902 vaxc$errno
= status
;
4907 item_code
= JPI$_FREP0VA
;
4908 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4911 vaxc$errno
= status
;
4914 item_code
= JPI$_FREP1VA
;
4915 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4918 vaxc$errno
= status
;
4922 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4926 define_logical_name (varname
, string
)
4930 struct dsc$descriptor_s strdsc
=
4931 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4932 struct dsc$descriptor_s envdsc
=
4933 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4934 struct dsc$descriptor_s lnmdsc
=
4935 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4937 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4941 delete_logical_name (varname
)
4944 struct dsc$descriptor_s envdsc
=
4945 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4946 struct dsc$descriptor_s lnmdsc
=
4947 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4949 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4967 error ("execvp system call not implemented");
4976 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4977 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4978 char from_esn
[NAM$C_MAXRSS
];
4979 char to_esn
[NAM$C_MAXRSS
];
4981 from_fab
.fab$l_fna
= from
;
4982 from_fab
.fab$b_fns
= strlen (from
);
4983 from_fab
.fab$l_nam
= &from_nam
;
4984 from_fab
.fab$l_fop
= FAB$M_NAM
;
4986 from_nam
.nam$l_esa
= from_esn
;
4987 from_nam
.nam$b_ess
= sizeof from_esn
;
4989 to_fab
.fab$l_fna
= to
;
4990 to_fab
.fab$b_fns
= strlen (to
);
4991 to_fab
.fab$l_nam
= &to_nam
;
4992 to_fab
.fab$l_fop
= FAB$M_NAM
;
4994 to_nam
.nam$l_esa
= to_esn
;
4995 to_nam
.nam$b_ess
= sizeof to_esn
;
4997 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
5003 if (status
== RMS$_DEV
)
5007 vaxc$errno
= status
;
5012 /* This function renames a file like `rename', but it strips
5013 the version number from the "to" filename, such that the "to" file is
5014 will always be a new version. It also sets the file protection once it is
5015 finished. The protection that we will use is stored in fab_final_pro,
5016 and was set when we did a creat_copy_attrs to create the file that we
5019 We could use the chmod function, but Eunichs uses 3 bits per user category
5020 to describe the protection, and VMS uses 4 (write and delete are separate
5021 bits). To maintain portability, the VMS implementation of `chmod' wires
5022 the W and D bits together. */
5025 static struct fibdef fib
; /* We need this initialized to zero */
5026 char vms_file_written
[NAM$C_MAXRSS
];
5029 rename_sans_version (from
,to
)
5036 struct FAB to_fab
= cc$rms_fab
;
5037 struct NAM to_nam
= cc$rms_nam
;
5038 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
5039 struct dsc$descriptor fib_attr
[2]
5040 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
5041 char to_esn
[NAM$C_MAXRSS
];
5043 $
DESCRIPTOR (disk
,to_esn
);
5045 to_fab
.fab$l_fna
= to
;
5046 to_fab
.fab$b_fns
= strlen (to
);
5047 to_fab
.fab$l_nam
= &to_nam
;
5048 to_fab
.fab$l_fop
= FAB$M_NAM
;
5050 to_nam
.nam$l_esa
= to_esn
;
5051 to_nam
.nam$b_ess
= sizeof to_esn
;
5053 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
5055 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
5056 *(to_nam
.nam$l_ver
) = '\0';
5058 stat
= rename (from
, to_esn
);
5062 strcpy (vms_file_written
, to_esn
);
5064 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
5065 to_fab
.fab$b_fns
= strlen (vms_file_written
);
5067 /* Now set the file protection to the correct value */
5068 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
5070 /* Copy these fields into the fib */
5071 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
5072 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
5073 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
5075 SYS$
CLOSE (&to_fab
, 0, 0);
5077 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
5080 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
5081 0, 0, 0, &fib_attr
, 0);
5084 stat
= SYS$
DASSGN (chan
);
5087 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
5098 unsigned short fid
[3];
5099 char esa
[NAM$C_MAXRSS
];
5102 fab
.fab$l_fop
= FAB$M_OFP
;
5103 fab
.fab$l_fna
= file
;
5104 fab
.fab$b_fns
= strlen (file
);
5105 fab
.fab$l_nam
= &nam
;
5108 nam
.nam$l_esa
= esa
;
5109 nam
.nam$b_ess
= NAM$C_MAXRSS
;
5111 status
= SYS$
PARSE (&fab
);
5112 if ((status
& 1) == 0)
5115 vaxc$errno
= status
;
5118 status
= SYS$
SEARCH (&fab
);
5119 if ((status
& 1) == 0)
5122 vaxc$errno
= status
;
5126 fid
[0] = nam
.nam$w_fid
[0];
5127 fid
[1] = nam
.nam$w_fid
[1];
5128 fid
[2] = nam
.nam$w_fid
[2];
5130 fab
.fab$l_fna
= new;
5131 fab
.fab$b_fns
= strlen (new);
5133 status
= SYS$
PARSE (&fab
);
5134 if ((status
& 1) == 0)
5137 vaxc$errno
= status
;
5141 nam
.nam$w_fid
[0] = fid
[0];
5142 nam
.nam$w_fid
[1] = fid
[1];
5143 nam
.nam$w_fid
[2] = fid
[2];
5145 nam
.nam$l_esa
= nam
.nam$l_name
;
5146 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
5148 status
= SYS$
ENTER (&fab
);
5149 if ((status
& 1) == 0)
5152 vaxc$errno
= status
;
5163 printf ("%s not yet implemented\r\n", badfunc
);
5164 reset_all_sys_modes ();
5171 /* Arrange to return a range centered on zero. */
5172 return rand () - (1 << 30);
5184 /* Called from init_sys_modes. */
5186 hft_init (struct tty_display_info
*tty_out
)
5190 /* If we're not on an HFT we shouldn't do any of this. We determine
5191 if we are on an HFT by trying to get an HFT error code. If this
5192 call fails, we're not on an HFT. */
5194 if (ioctl (0, HFQERROR
, &junk
) < 0)
5196 #else /* not IBMR2AIX */
5197 if (ioctl (0, HFQEIO
, 0) < 0)
5199 #endif /* not IBMR2AIX */
5201 /* On AIX the default hft keyboard mapping uses backspace rather than delete
5202 as the rubout key's ASCII code. Here this is changed. The bug is that
5203 there's no way to determine the old mapping, so in reset_sys_modes
5204 we need to assume that the normal map had been present. Of course, this
5205 code also doesn't help if on a terminal emulator which doesn't understand
5209 struct hfkeymap keymap
;
5211 buf
.hf_bufp
= (char *)&keymap
;
5212 buf
.hf_buflen
= sizeof (keymap
);
5213 keymap
.hf_nkeys
= 2;
5214 keymap
.hfkey
[0].hf_kpos
= 15;
5215 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5217 keymap
.hfkey
[0].hf_keyidh
= '<';
5218 #else /* not IBMR2AIX */
5219 keymap
.hfkey
[0].hf_page
= '<';
5220 #endif /* not IBMR2AIX */
5221 keymap
.hfkey
[0].hf_char
= 127;
5222 keymap
.hfkey
[1].hf_kpos
= 15;
5223 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5225 keymap
.hfkey
[1].hf_keyidh
= '<';
5226 #else /* not IBMR2AIX */
5227 keymap
.hfkey
[1].hf_page
= '<';
5228 #endif /* not IBMR2AIX */
5229 keymap
.hfkey
[1].hf_char
= 127;
5230 hftctl (0, HFSKBD
, &buf
);
5234 /* Reset the rubout key to backspace. */
5237 hft_reset (struct tty_display_info
*tty_out
)
5240 struct hfkeymap keymap
;
5244 if (ioctl (0, HFQERROR
, &junk
) < 0)
5246 #else /* not IBMR2AIX */
5247 if (ioctl (0, HFQEIO
, 0) < 0)
5249 #endif /* not IBMR2AIX */
5251 buf
.hf_bufp
= (char *)&keymap
;
5252 buf
.hf_buflen
= sizeof (keymap
);
5253 keymap
.hf_nkeys
= 2;
5254 keymap
.hfkey
[0].hf_kpos
= 15;
5255 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5257 keymap
.hfkey
[0].hf_keyidh
= '<';
5258 #else /* not IBMR2AIX */
5259 keymap
.hfkey
[0].hf_page
= '<';
5260 #endif /* not IBMR2AIX */
5261 keymap
.hfkey
[0].hf_char
= 8;
5262 keymap
.hfkey
[1].hf_kpos
= 15;
5263 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5265 keymap
.hfkey
[1].hf_keyidh
= '<';
5266 #else /* not IBMR2AIX */
5267 keymap
.hfkey
[1].hf_page
= '<';
5268 #endif /* not IBMR2AIX */
5269 keymap
.hfkey
[1].hf_char
= 8;
5270 hftctl (0, HFSKBD
, &buf
);
5283 register int length
;
5287 long max_str
= 65535;
5289 while (length
> max_str
) {
5290 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5295 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5297 while (length
-- > 0)
5299 #endif /* not VMS */
5302 #endif /* no bzero */
5303 #endif /* BSTRING */
5305 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5308 /* Saying `void' requires a declaration, above, where bcopy is used
5309 and that declaration causes pain for systems where bcopy is a macro. */
5310 bcopy (b1
, b2
, length
)
5313 register int length
;
5316 long max_str
= 65535;
5318 while (length
> max_str
) {
5319 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5325 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5327 while (length
-- > 0)
5329 #endif /* not VMS */
5331 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5336 bcmp (b1
, b2
, length
) /* This could be a macro! */
5339 register int length
;
5342 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5343 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5345 return STR$
COMPARE (&src1
, &src2
);
5347 while (length
-- > 0)
5352 #endif /* not VMS */
5354 #endif /* no bcmp */
5355 #endif /* not BSTRING */
5357 #ifndef HAVE_STRSIGNAL
5364 if (0 <= code
&& code
< NSIG
)
5367 signame
= sys_errlist
[code
];
5369 /* Cast to suppress warning if the table has const char *. */
5370 signame
= (char *) sys_siglist
[code
];
5376 #endif /* HAVE_STRSIGNAL */
5378 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
5379 (do not change this comment) */