1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 86,87,88,93,94,95,1999,2000,01,2003
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
33 /* Including stdlib.h isn't necessarily enough to get srandom
34 declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
36 #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets
37 random prototyped as returning `int'. It looks to me as
38 though the best way to DTRT is to prefer the rand48 functions
39 (per libc.info). -- fx */
40 extern long int random
P_ ((void));
42 #if 0 /* Don't prototype srandom; it takes an unsigned argument on
43 some systems, and an unsigned long on others, like FreeBSD
45 extern void srandom
P_ ((unsigned int));
49 #include "sysselect.h"
51 #include "blockinput.h"
55 /* It is essential to include stdlib.h so that this file picks up
56 the correct definitions of rand, srand, and RAND_MAX.
57 Otherwise random numbers will not work correctly. */
61 /* Nonzero means delete a process right away if it exits (process.c). */
62 static int delete_exited_processes
;
68 #define write sys_write
73 #endif /* not WINDOWSNT */
79 /* Does anyone other than VMS need this? */
81 #define sys_fwrite fwrite
86 #include <sys/types.h>
91 #if !defined (USG) || defined (BSD_PGRPS)
93 #define setpgrp setpgid
97 /* Get SI_SRPC_DOMAIN, if it is available. */
98 #ifdef HAVE_SYS_SYSTEMINFO_H
99 #include <sys/systeminfo.h>
102 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
106 #include <sys/param.h>
110 extern unsigned start
__asm__ ("start");
132 #include <sys/file.h>
140 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
144 #include <sys/file.h>
152 #include <sys/ioctl.h>
158 #ifdef BROKEN_TIOCGWINSZ
163 #if defined (USG) || defined (DGUX)
164 #include <sys/utsname.h>
165 #ifndef MEMORY_IN_STRING_H
168 #if defined (TIOCGWINSZ) || defined (ISC4_0)
170 #include <sys/sioctl.h>
173 #include <sys/stream.h>
174 #include <sys/ptem.h>
176 #endif /* TIOCGWINSZ or ISC4_0 */
177 #endif /* USG or DGUX */
179 extern int quit_char
;
181 #include "keyboard.h"
184 #include "termhooks.h"
185 #include "termchar.h"
186 #include "termopts.h"
187 #include "dispextern.h"
189 #include "cm.h" /* for reset_sys_modes */
193 /* In process.h which conflicts with the local copy. */
195 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
196 int _CRTAPI1
_getpid (void);
199 #ifdef NONSYSTEM_DIR_LIBRARY
201 #endif /* NONSYSTEM_DIR_LIBRARY */
203 #include "syssignal.h"
210 #ifndef HAVE_STRUCT_UTIMBUF
211 /* We want to use utime rather than utimes, but we couldn't find the
212 structure declaration. We'll use the traditional one. */
220 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
226 #define LNOFLSH 0100000
229 static int baud_convert
[] =
234 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
235 1800, 2400, 4800, 9600, 19200, 38400
242 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
244 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
252 void croak
P_ ((char *));
255 void hft_init
P_ ((struct tty_display_info
*));
256 void hft_reset
P_ ((struct tty_display_info
*));
259 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
261 SIGMASKTYPE sigprocmask_set
;
264 /* Discard pending input on all input descriptors. */
270 struct emacs_tty buf
;
277 SYS$
QIOW (0, fileno (CURTTY()->input
), IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
278 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
283 struct tty_display_info
*tty
;
284 for (tty
= tty_list
; tty
; tty
= tty
->next
)
288 ioctl (fileno (tty
->input
), TIOCFLUSH
, &zero
);
291 #else /* not Apollo */
292 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
293 while (dos_keyread () != -1)
295 #else /* not MSDOS */
297 struct tty_display_info
*tty
;
298 for (tty
= tty_list
; tty
; tty
= tty
->next
)
300 if (tty
->input
) /* Is the device suspended? */
302 EMACS_GET_TTY (fileno (tty
->input
), &buf
);
303 EMACS_SET_TTY (fileno (tty
->input
), &buf
, 0);
307 #endif /* not MSDOS */
308 #endif /* not Apollo */
310 #endif /* not WINDOWSNT */
316 /* Arrange for character C to be read as the next input from
318 XXX What if we have multiple ttys?
324 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
327 /* Should perhaps error if in batch mode */
329 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
330 #else /* no TIOCSTI */
331 error ("Cannot stuff terminal input characters in this version of Unix");
332 #endif /* no TIOCSTI */
338 init_baud_rate (int fd
)
344 #ifdef INIT_BAUD_RATE
349 #else /* not DOS_NT */
353 SYS$
QIOW (0, fd
, IO$_SENSEMODE
, &sg
, 0, 0,
354 &sg
.class, 12, 0, 0, 0, 0 );
355 emacs_ospeed
= sg
.xmit_baud
;
362 emacs_ospeed
= cfgetospeed (&sg
);
363 #if defined (USE_GETOBAUD) && defined (getobaud)
364 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
365 if (emacs_ospeed
== 0)
366 emacs_ospeed
= getobaud (sg
.c_cflag
);
368 #else /* neither VMS nor TERMIOS */
376 ioctl (fd
, TCGETA
, &sg
);
378 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
379 #else /* neither VMS nor TERMIOS nor TERMIO */
382 sg
.sg_ospeed
= B9600
;
383 if (ioctl (fd
, TIOCGETP
, &sg
) < 0)
385 emacs_ospeed
= sg
.sg_ospeed
;
386 #endif /* not HAVE_TERMIO */
387 #endif /* not HAVE_TERMIOS */
389 #endif /* not DOS_NT */
390 #endif /* not INIT_BAUD_RATE */
393 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
394 ? baud_convert
[emacs_ospeed
] : 9600);
402 set_exclusive_use (fd
)
406 ioctl (fd
, FIOCLEX
, 0);
408 /* Ok to do nothing if this feature does not exist */
413 wait_without_blocking ()
416 wait3 (0, WNOHANG
| WUNTRACED
, 0);
418 croak ("wait_without_blocking");
420 synch_process_alive
= 0;
423 #endif /* not subprocesses */
425 int wait_debugging
; /* Set nonzero to make following function work under dbx
426 (at least for bsd). */
429 wait_for_termination_signal ()
432 /* Wait for subprocess with process id `pid' to terminate and
433 make sure it will get eliminated (not remain forever as a zombie) */
436 wait_for_termination (pid
)
445 status
= SYS$
FORCEX (&pid
, 0, 0);
448 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
449 /* Note that kill returns -1 even if the process is just a zombie now.
450 But inevitably a SIGCHLD interrupt should be generated
451 and child_sig will do wait3 and make the process go away. */
452 /* There is some indication that there is a bug involved with
453 termination of subprocesses, perhaps involving a kernel bug too,
454 but no idea what it is. Just as a hunch we signal SIGCHLD to see
455 if that causes the problem to go away or get worse. */
456 sigsetmask (sigmask (SIGCHLD
));
457 if (0 > kill (pid
, 0))
459 sigsetmask (SIGEMPTYMASK
);
460 kill (getpid (), SIGCHLD
);
466 sigpause (SIGEMPTYMASK
);
467 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
468 #if defined (UNIPLUS)
469 if (0 > kill (pid
, 0))
472 #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */
473 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
474 sigblock (sigmask (SIGCHLD
));
476 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
478 sigunblock (sigmask (SIGCHLD
));
482 sigsuspend (&empty_mask
);
483 #else /* not POSIX_SIGNALS */
484 #ifdef HAVE_SYSV_SIGPAUSE
486 if (0 > kill (pid
, 0))
492 #else /* not HAVE_SYSV_SIGPAUSE */
496 #else /* not WINDOWSNT */
497 if (0 > kill (pid
, 0))
499 /* Using sleep instead of pause avoids timing error.
500 If the inferior dies just before the sleep,
501 we lose just one second. */
503 #endif /* not WINDOWSNT */
504 #endif /* not HAVE_SYSV_SIGPAUSE */
505 #endif /* not POSIX_SIGNALS */
506 #endif /* not UNIPLUS */
507 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
509 #else /* not subprocesses */
512 #else /* not __DJGPP__ > 1 */
514 if (kill (pid
, 0) < 0)
520 if (status
== pid
|| status
== -1)
523 #endif /* not __DJGPP__ > 1*/
524 #endif /* not subprocesses */
531 * flush any pending output
532 * (may flush input as well; it does not matter the way we use it)
536 flush_pending_output (channel
)
540 /* If we try this, we get hit with SIGTTIN, because
541 the child's tty belongs to the child's pgrp. */
544 ioctl (channel
, TCFLSH
, 1);
548 /* 3rd arg should be ignored
549 but some 4.2 kernels actually want the address of an int
550 and nonzero means something different. */
551 ioctl (channel
, TIOCFLUSH
, &zero
);
558 /* Set up the terminal at the other end of a pseudo-terminal that
559 we will be controlling an inferior through.
560 It should not echo or do line-editing, since that is done
561 in Emacs. No padding needed for insertion into an Emacs buffer. */
564 child_setup_tty (out
)
570 EMACS_GET_TTY (out
, &s
);
572 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
573 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
574 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
576 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
577 /* No output delays */
579 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
580 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
581 #if 0 /* This causes bugs in (for instance) telnet to certain sites. */
582 s
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
583 #ifdef INLCR /* Just being cautious, since I can't check how
584 widespread INLCR is--rms. */
585 s
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
589 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
592 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
595 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
597 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
598 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
600 /* Said to be unnecessary: */
601 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
602 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
605 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
606 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
607 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
608 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
611 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
615 /* AIX enhanced edit loses NULs, so disable it */
618 s
.main
.c_iflag
&= ~ASCEDIT
;
620 /* Also, PTY overloads NUL and BREAK.
621 don't ignore break, but don't signal either, so it looks like NUL. */
622 s
.main
.c_iflag
&= ~IGNBRK
;
623 s
.main
.c_iflag
&= ~BRKINT
;
624 /* QUIT and INTR work better as signals, so disable character forms */
625 s
.main
.c_cc
[VINTR
] = 0377;
626 #ifdef SIGNALS_VIA_CHARACTERS
627 /* the QUIT and INTR character are used in process_send_signal
628 so set them here to something useful. */
629 if (s
.main
.c_cc
[VQUIT
] == 0377)
630 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
631 if (s
.main
.c_cc
[VINTR
] == 0377)
632 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
633 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
634 /* QUIT and INTR work better as signals, so disable character forms */
635 s
.main
.c_cc
[VQUIT
] = 0377;
636 s
.main
.c_cc
[VINTR
] = 0377;
637 s
.main
.c_lflag
&= ~ISIG
;
638 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
639 s
.main
.c_cc
[VEOL
] = 0377;
640 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
643 #else /* not HAVE_TERMIO */
645 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
647 s
.main
.sg_flags
|= LPASS8
;
648 s
.main
.sg_erase
= 0377;
649 s
.main
.sg_kill
= 0377;
650 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
652 #endif /* not HAVE_TERMIO */
654 EMACS_SET_TTY (out
, &s
, 0);
663 ioctl (out
, FIOASYNC
, &zero
);
666 #endif /* not DOS_NT */
670 #endif /* subprocesses */
672 /* Record a signal code and the handler for it. */
676 SIGTYPE (*handler
) P_ ((int));
679 static void save_signal_handlers
P_ ((struct save_signal
*));
680 static void restore_signal_handlers
P_ ((struct save_signal
*));
682 /* Suspend the Emacs process; give terminal to its superior. */
688 /* "Foster" parentage allows emacs to return to a subprocess that attached
689 to the current emacs as a cheaper than starting a whole new process. This
690 is set up by KEPTEDITOR.COM. */
691 unsigned long parent_id
, foster_parent_id
;
694 fpid_string
= getenv ("EMACS_PARENT_PID");
695 if (fpid_string
!= NULL
)
697 sscanf (fpid_string
, "%x", &foster_parent_id
);
698 if (foster_parent_id
!= 0)
699 parent_id
= foster_parent_id
;
701 parent_id
= getppid ();
704 parent_id
= getppid ();
706 xfree (fpid_string
); /* On VMS, this was malloc'd */
708 if (parent_id
&& parent_id
!= 0xffffffff)
710 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
711 int status
= LIB$
ATTACH (&parent_id
) & 1;
712 signal (SIGINT
, oldsig
);
721 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
722 d_prompt
.a
= "Emacs: "; /* Just a reminder */
723 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
728 #if defined (SIGTSTP) && !defined (MSDOS)
731 int pgrp
= EMACS_GETPGRP (0);
732 EMACS_KILLPG (pgrp
, SIGTSTP
);
735 #else /* No SIGTSTP */
736 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
737 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
738 kill (getpid (), SIGQUIT
);
740 #else /* No SIGTSTP or USG_JOBCTRL */
742 /* On a system where suspending is not implemented,
743 instead fork a subshell and let it talk directly to the terminal
747 #endif /* no USG_JOBCTRL */
748 #endif /* no SIGTSTP */
752 /* Fork a subshell. */
759 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
761 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
764 struct save_signal saved_handlers
[5];
766 unsigned char *str
= 0;
769 saved_handlers
[0].code
= SIGINT
;
770 saved_handlers
[1].code
= SIGQUIT
;
771 saved_handlers
[2].code
= SIGTERM
;
773 saved_handlers
[3].code
= SIGIO
;
774 saved_handlers
[4].code
= 0;
776 saved_handlers
[3].code
= 0;
779 /* Mentioning current_buffer->buffer would mean including buffer.h,
780 which somehow wedges the hp compiler. So instead... */
782 dir
= intern ("default-directory");
783 if (NILP (Fboundp (dir
)))
785 dir
= Fsymbol_value (dir
);
789 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
790 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
792 bcopy (SDATA (dir
), str
, len
);
793 if (str
[len
- 1] != '/') str
[len
++] = '/';
800 save_signal_handlers (saved_handlers
);
801 synch_process_alive
= 1;
802 #endif /* __DJGPP__ > 1 */
806 error ("Can't spawn subshell");
813 #ifdef DOS_NT /* MW, Aug 1993 */
816 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
819 sh
= (char *) egetenv ("SHELL");
823 /* Use our buffer's default directory for the subshell. */
825 chdir ((char *) str
);
828 close_process_descs (); /* Close Emacs's pipes/ptys */
831 #ifdef SET_EMACS_PRIORITY
833 extern EMACS_INT emacs_priority
;
835 if (emacs_priority
< 0)
836 nice (-emacs_priority
);
840 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
842 char *epwd
= getenv ("PWD");
843 char old_pwd
[MAXPATHLEN
+1+4];
845 /* If PWD is set, pass it with corrected value. */
848 strcpy (old_pwd
, epwd
);
849 if (str
[len
- 1] == '/')
851 setenv ("PWD", str
, 1);
856 putenv (old_pwd
); /* restore previous value */
858 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
860 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
862 #else /* not MSDOS */
864 /* Waits for process completion */
865 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
868 write (1, "Can't execute subshell", 22);
869 #else /* not WINDOWSNT */
871 write (1, "Can't execute subshell", 22);
873 #endif /* not WINDOWSNT */
874 #endif /* not MSDOS */
877 /* Do this now if we did not do it before. */
878 #if !defined (MSDOS) || __DJGPP__ == 1
879 save_signal_handlers (saved_handlers
);
880 synch_process_alive
= 1;
884 wait_for_termination (pid
);
886 restore_signal_handlers (saved_handlers
);
887 synch_process_alive
= 0;
890 #endif /* !MAC_OS8 */
893 save_signal_handlers (saved_handlers
)
894 struct save_signal
*saved_handlers
;
896 while (saved_handlers
->code
)
898 saved_handlers
->handler
899 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
905 restore_signal_handlers (saved_handlers
)
906 struct save_signal
*saved_handlers
;
908 while (saved_handlers
->code
)
910 signal (saved_handlers
->code
, saved_handlers
->handler
);
916 /* If SIGIO is broken, don't do anything. */
933 unrequest_sigio (void)
940 int old_fcntl_flags
[MAXDESC
];
947 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
948 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
950 interrupts_deferred
= 0;
958 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
962 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
963 /* XXX Uhm, FASYNC is not used anymore here. */
968 /* XXX read_socket_hook is not global anymore. Is blocking SIGIO
971 if (read_socket_hook
)
976 sigunblock (sigmask (SIGWINCH
));
978 sigunblock (sigmask (SIGIO
));
980 interrupts_deferred
= 0;
984 unrequest_sigio (void)
986 /* XXX read_socket_hook is not global anymore. Is blocking SIGIO
989 if (read_socket_hook
)
994 sigblock (sigmask (SIGWINCH
));
996 sigblock (sigmask (SIGIO
));
997 interrupts_deferred
= 1;
1000 #else /* no FASYNC */
1001 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
1008 if (read_socket_hook
)
1011 /* XXX CURTTY() is bogus here. */
1012 ioctl (fileno (CURTTY ()->input
), FIOASYNC
, &on
);
1013 interrupts_deferred
= 0;
1021 if (read_socket_hook
)
1024 /* XXX CURTTY() is bogus here. */
1025 ioctl (fileno (CURTTY ()->input
), FIOASYNC
, &off
);
1026 interrupts_deferred
= 1;
1029 #else /* not FASYNC, not STRIDE */
1033 #include <termios.h>
1041 if (read_socket_hook
)
1045 sigaddset (&st
, SIGIO
);
1046 ioctl (0, FIOASYNC
, &on
); /* XXX This fails for multiple ttys. */
1047 interrupts_deferred
= 0;
1048 sigprocmask (SIG_UNBLOCK
, &st
, (sigset_t
*)0);
1056 if (read_socket_hook
)
1059 ioctl (0, FIOASYNC
, &off
); /* XXX This fails for multiple ttys. */
1060 interrupts_deferred
= 1;
1063 #else /* ! _CX_UX */
1069 if (read_socket_hook
)
1072 croak ("request_sigio");
1078 if (read_socket_hook
)
1081 croak ("unrequest_sigio");
1088 #endif /* F_SETFL */
1091 /* Saving and restoring the process group of Emacs's terminal. */
1095 /* The process group of which Emacs was a member when it initially
1098 If Emacs was in its own process group (i.e. inherited_pgroup ==
1099 getpid ()), then we know we're running under a shell with job
1100 control (Emacs would never be run as part of a pipeline).
1103 If Emacs was not in its own process group, then we know we're
1104 running under a shell (or a caller) that doesn't know how to
1105 separate itself from Emacs (like sh). Emacs must be in its own
1106 process group in order to receive SIGIO correctly. In this
1107 situation, we put ourselves in our own pgroup, forcibly set the
1108 tty's pgroup to our pgroup, and make sure to restore and reinstate
1109 the tty's pgroup just like any other terminal setting. If
1110 inherited_group was not the tty's pgroup, then we'll get a
1111 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1112 it goes foreground in the future, which is what should happen.
1114 This variable is initialized in emacs.c. */
1115 int inherited_pgroup
;
1117 /* Split off the foreground process group to Emacs alone. When we are
1118 in the foreground, but not started in our own process group,
1119 redirect the tty device handle FD to point to our own process
1120 group. We need to be in our own process group to receive SIGIO
1123 narrow_foreground_group (int fd
)
1127 setpgrp (0, inherited_pgroup
);
1128 if (! inherited_pgroup
)
1129 abort (); /* Should not happen. */
1130 if (inherited_pgroup
!= me
)
1131 EMACS_SET_TTY_PGRP (fd
, &me
); /* XXX This only works on the controlling tty. */
1135 /* Set the tty to our original foreground group. */
1137 widen_foreground_group (int fd
)
1139 if (inherited_pgroup
!= getpid ())
1140 EMACS_SET_TTY_PGRP (fd
, &inherited_pgroup
);
1141 setpgrp (0, inherited_pgroup
);
1144 #endif /* BSD_PGRPS */
1146 /* Getting and setting emacs_tty structures. */
1148 /* Set *TC to the parameters associated with the terminal FD.
1149 Return zero if all's well, or -1 if we ran into an error we
1150 couldn't deal with. */
1152 emacs_get_tty (fd
, settings
)
1154 struct emacs_tty
*settings
;
1156 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1158 /* We have those nifty POSIX tcmumbleattr functions. */
1159 bzero (&settings
->main
, sizeof (settings
->main
));
1160 if (tcgetattr (fd
, &settings
->main
) < 0)
1165 /* The SYSV-style interface? */
1166 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1171 /* Vehemently Monstrous System? :-) */
1172 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1173 &settings
->main
.class, 12, 0, 0, 0, 0)
1179 /* I give up - I hope you have the BSD ioctls. */
1180 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1182 #endif /* not DOS_NT */
1187 /* Suivant - Do we have to get struct ltchars data? */
1189 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1193 /* How about a struct tchars and a wordful of lmode bits? */
1195 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1196 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1200 /* We have survived the tempest. */
1205 /* Set the parameters of the tty on FD according to the contents of
1206 *SETTINGS. If FLUSHP is non-zero, we discard input.
1207 Return 0 if all went well, and -1 if anything failed. */
1210 emacs_set_tty (fd
, settings
, flushp
)
1212 struct emacs_tty
*settings
;
1215 /* Set the primary parameters - baud rate, character size, etcetera. */
1218 /* We have those nifty POSIX tcmumbleattr functions.
1219 William J. Smith <wjs@wiis.wang.com> writes:
1220 "POSIX 1003.1 defines tcsetattr to return success if it was
1221 able to perform any of the requested actions, even if some
1222 of the requested actions could not be performed.
1223 We must read settings back to ensure tty setup properly.
1224 AIX requires this to keep tty from hanging occasionally." */
1225 /* This make sure that we don't loop indefinitely in here. */
1226 for (i
= 0 ; i
< 10 ; i
++)
1227 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1238 bzero (&new, sizeof (new));
1239 /* Get the current settings, and see if they're what we asked for. */
1240 tcgetattr (fd
, &new);
1241 /* We cannot use memcmp on the whole structure here because under
1242 * aix386 the termios structure has some reserved field that may
1245 if ( new.c_iflag
== settings
->main
.c_iflag
1246 && new.c_oflag
== settings
->main
.c_oflag
1247 && new.c_cflag
== settings
->main
.c_cflag
1248 && new.c_lflag
== settings
->main
.c_lflag
1249 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1257 /* The SYSV-style interface? */
1258 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1263 /* Vehemently Monstrous System? :-) */
1264 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1265 &settings
->main
.class, 12, 0, 0, 0, 0)
1271 /* I give up - I hope you have the BSD ioctls. */
1272 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1274 #endif /* not DOS_NT */
1280 /* Suivant - Do we have to get struct ltchars data? */
1282 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1286 /* How about a struct tchars and a wordful of lmode bits? */
1288 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1289 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1293 /* We have survived the tempest. */
1300 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1305 #ifndef F_SETOWN_BUG
1307 int old_fcntl_owner
[MAXDESC
];
1308 #endif /* F_SETOWN */
1309 #endif /* F_SETOWN_BUG */
1311 /* This may also be defined in stdio,
1312 but if so, this does no harm,
1313 and using the same name avoids wasting the other one's space. */
1316 extern char *_sobuf
;
1318 #if defined (USG) || defined (DGUX)
1319 unsigned char _sobuf
[BUFSIZ
+8];
1321 char _sobuf
[BUFSIZ
];
1326 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1329 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1332 /* Initialize the terminal mode on all tty devices that are currently
1336 init_all_sys_modes (void)
1338 struct tty_display_info
*tty
;
1339 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1340 init_sys_modes (tty
);
1343 /* Initialize the terminal mode on the given tty device. */
1346 init_sys_modes (tty_out
)
1347 struct tty_display_info
*tty_out
;
1349 struct emacs_tty tty
;
1352 /* cus-start.el complains if delete-exited-processes is not defined */
1353 #ifndef subprocesses
1354 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
1355 doc
: /* *Non-nil means delete processes immediately when they exit.
1356 nil means don't delete them until `list-processes' is run. */);
1357 delete_exited_processes
= 0;
1359 #endif /* MAC_OS8 */
1363 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1364 extern int (*interrupt_signal
) ();
1368 Vtty_erase_char
= Qnil
;
1373 if (!tty_out
->output
)
1374 return; /* The tty is suspended. */
1378 input_ef
= get_kbd_event_flag ();
1379 /* LIB$GET_EF (&input_ef); */
1380 SYS$
CLREF (input_ef
);
1381 waiting_for_ast
= 0;
1383 timer_ef
= get_timer_event_flag ();
1384 /* LIB$GET_EF (&timer_ef); */
1385 SYS$
CLREF (timer_ef
);
1389 LIB$
GET_EF (&process_ef
);
1390 SYS$
CLREF (process_ef
);
1392 if (input_ef
/ 32 != process_ef
/ 32)
1393 croak ("Input and process event flags in different clusters.");
1395 if (input_ef
/ 32 != timer_ef
/ 32)
1396 croak ("Input and timer event flags in different clusters.");
1398 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1399 ((unsigned) 1 << (process_ef
% 32));
1401 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1402 ((unsigned) 1 << (timer_ef
% 32));
1404 sys_access_reinit ();
1410 /* read_socket_hook is not global anymore. I think doing this
1411 unconditionally will not cause any problems. */
1412 if (! read_socket_hook
&& EQ (Vinitial_window_system
, Qnil
))
1414 narrow_foreground_group (fileno (tty_out
->input
));
1417 if (! tty_out
->old_tty
)
1418 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
1420 EMACS_GET_TTY (fileno (tty_out
->input
), tty_out
->old_tty
);
1422 tty
= *tty_out
->old_tty
;
1424 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1425 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
1428 /* This allows meta to be sent on 8th bit. */
1429 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1431 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1432 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1433 #ifdef INLCR /* I'm just being cautious,
1434 since I can't check how widespread INLCR is--rms. */
1435 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1438 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1440 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1441 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1443 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1445 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1446 if (tty_out
->flow_control
)
1448 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1450 tty
.main
.c_iflag
&= ~IXANY
;
1454 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1455 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1457 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1459 if (tty_out
->meta_key
)
1461 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1462 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1465 if (tty_out
->input
== stdin
)
1467 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1468 /* Set up C-g for both SIGQUIT and SIGINT.
1469 We don't know which we will get, but we handle both alike
1470 so which one it really gives us does not matter. */
1471 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1475 /* We normally don't get interrupt or quit signals from tty
1476 devices other than our controlling terminal; therefore,
1477 we must handle C-g as normal input. Unfortunately, this
1478 means that the interrupt and quit feature must be
1479 disabled on secondary ttys, or we would not even see the
1482 Note that even though emacsclient could have special code
1483 to pass SIGINT to Emacs, we should _not_ enable
1484 interrupt/quit keys for emacsclient frames. This means
1485 that we can't break out of loops in C code from a
1486 secondary tty frame, but we can always decide what
1487 display the C-g came from, which is more important from a
1488 usability point of view. (Consider the case when two
1489 people work together using the same Emacs instance.) */
1490 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
1491 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
1493 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1494 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1496 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1500 #if defined (mips) || defined (HAVE_TCATTR)
1502 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1505 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1506 #endif /* V_DSUSP */
1507 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1508 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1511 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1514 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1515 #endif /* VREPRINT */
1517 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1518 #endif /* VWERASE */
1520 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1521 #endif /* VDISCARD */
1523 if (tty_out
->flow_control
)
1526 tty
.main
.c_cc
[VSTART
] = '\021';
1529 tty
.main
.c_cc
[VSTOP
] = '\023';
1535 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1538 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1541 #endif /* mips or HAVE_TCATTR */
1543 #ifdef SET_LINE_DISCIPLINE
1544 /* Need to explicitly request TERMIODISC line discipline or
1545 Ultrix's termios does not work correctly. */
1546 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1550 /* AIX enhanced edit loses NULs, so disable it. */
1551 tty
.main
.c_line
= 0;
1552 tty
.main
.c_iflag
&= ~ASCEDIT
;
1554 tty
.main
.c_cc
[VSTRT
] = 255;
1555 tty
.main
.c_cc
[VSTOP
] = 255;
1556 tty
.main
.c_cc
[VSUSP
] = 255;
1557 tty
.main
.c_cc
[VDSUSP
] = 255;
1558 #endif /* IBMR2AIX */
1559 if (tty_out
->flow_control
)
1562 tty
.main
.c_cc
[VSTART
] = '\021';
1565 tty
.main
.c_cc
[VSTOP
] = '\023';
1568 /* Also, PTY overloads NUL and BREAK.
1569 don't ignore break, but don't signal either, so it looks like NUL.
1570 This really serves a purpose only if running in an XTERM window
1571 or via TELNET or the like, but does no harm elsewhere. */
1572 tty
.main
.c_iflag
&= ~IGNBRK
;
1573 tty
.main
.c_iflag
&= ~BRKINT
;
1575 #else /* if not HAVE_TERMIO */
1577 tty
.main
.tt_char
|= TT$M_NOECHO
;
1579 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1580 if (tty_out
->flow_control
)
1581 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1583 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1584 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1585 #else /* not VMS (BSD, that is) */
1587 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1588 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1590 tty
.main
.sg_flags
|= ANYP
;
1591 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1592 #endif /* not DOS_NT */
1593 #endif /* not VMS (BSD, that is) */
1594 #endif /* not HAVE_TERMIO */
1596 /* If going to use CBREAK mode, we must request C-g to interrupt
1597 and turn off start and stop chars, etc. If not going to use
1598 CBREAK mode, do this anyway so as to turn off local flow
1599 control for user coming over network on 4.2; in this case,
1600 only t_stopc and t_startc really matter. */
1603 /* Note: if not using CBREAK mode, it makes no difference how we
1605 tty
.tchars
= new_tchars
;
1606 tty
.tchars
.t_intrc
= quit_char
;
1607 if (tty_out
->flow_control
)
1609 tty
.tchars
.t_startc
= '\021';
1610 tty
.tchars
.t_stopc
= '\023';
1613 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| tty_out
->old_tty
.lmode
;
1615 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1616 anything, and leaving it in breaks the meta key. Go figure. */
1617 tty
.lmode
&= ~LLITOUT
;
1624 #endif /* HAVE_TCHARS */
1625 #endif /* not HAVE_TERMIO */
1628 tty
.ltchars
= new_ltchars
;
1629 #endif /* HAVE_LTCHARS */
1630 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1631 if (!tty_out
->term_initted
)
1632 internal_terminal_init ();
1636 EMACS_SET_TTY (fileno (tty_out
->input
), &tty
, 0);
1638 /* This code added to insure that, if flow-control is not to be used,
1639 we have an unlocked terminal at the start. */
1642 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1646 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1650 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1652 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1660 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1661 to be only LF. This is the way that is done. */
1664 if (ioctl (1, HFTGETID
, &tty
) != -1)
1665 write (1, "\033[20l", 5);
1671 /* Appears to do nothing when in PASTHRU mode.
1672 SYS$QIOW (0, fileno (tty_out->input), IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1673 interrupt_signal, oob_chars, 0, 0, 0, 0);
1675 queue_kbd_input (0);
1679 #ifndef F_SETOWN_BUG
1680 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1681 if (interrupt_input
)
1683 old_fcntl_owner
[fileno (tty_out
->input
)] =
1684 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1685 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1686 init_sigio (fileno (tty_out
->input
));
1688 #endif /* F_GETOWN */
1689 #endif /* F_SETOWN_BUG */
1690 #endif /* F_SETFL */
1693 if (interrupt_input
)
1694 init_sigio (fileno (tty_out
->input
));
1697 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1701 /* This symbol is defined on recent USG systems.
1702 Someone says without this call USG won't really buffer the file
1703 even with a call to setbuf. */
1704 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1706 setbuf (tty_out
->output
, (char *) _sobuf
);
1709 tty_set_terminal_modes (tty_out
->display
);
1711 if (!tty_out
->term_initted
)
1713 Lisp_Object tail
, frame
;
1714 FOR_EACH_FRAME (tail
, frame
)
1716 /* XXX This needs to be revised. */
1717 if (FRAME_TERMCAP_P (XFRAME (frame
))
1718 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1719 init_frame_faces (XFRAME (frame
));
1723 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1725 if (display_completed
)
1726 direct_output_forward_char (0);
1730 Lisp_Object tail
, frame
;
1732 FOR_EACH_FRAME (tail
, frame
)
1734 if (FRAME_TERMCAP_P (XFRAME (frame
))
1735 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1736 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1740 tty_out
->term_initted
= 1;
1743 /* Return nonzero if safe to use tabs in output.
1744 At the time this is called, init_sys_modes has not been done yet. */
1747 tabs_safe_p (int fd
)
1749 struct emacs_tty etty
;
1751 EMACS_GET_TTY (fd
, &etty
);
1752 return EMACS_TTY_TABS_OK (&etty
);
1755 /* Get terminal size from system.
1756 Store number of lines into *HEIGHTP and width into *WIDTHP.
1757 We store 0 if there's no valid information. */
1760 get_tty_size (int fd
, int *widthp
, int *heightp
)
1766 struct winsize size
;
1768 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1769 *widthp
= *heightp
= 0;
1772 *widthp
= size
.ws_col
;
1773 *heightp
= size
.ws_row
;
1779 /* SunOS - style. */
1780 struct ttysize size
;
1782 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1783 *widthp
= *heightp
= 0;
1786 *widthp
= size
.ts_cols
;
1787 *heightp
= size
.ts_lines
;
1793 struct sensemode tty
;
1795 SYS$
QIOW (0, fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1796 &tty
.class, 12, 0, 0, 0, 0);
1797 *widthp
= tty
.scr_wid
;
1798 *heightp
= tty
.scr_len
;
1802 *widthp
= ScreenCols ();
1803 *heightp
= ScreenRows ();
1804 #else /* system doesn't know size */
1808 #endif /* not VMS */
1809 #endif /* not SunOS-style */
1810 #endif /* not BSD-style */
1813 /* Set the logical window size associated with descriptor FD
1814 to HEIGHT and WIDTH. This is used mainly with ptys. */
1817 set_window_size (fd
, height
, width
)
1818 int fd
, height
, width
;
1823 struct winsize size
;
1824 size
.ws_row
= height
;
1825 size
.ws_col
= width
;
1827 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1828 return 0; /* error */
1835 /* SunOS - style. */
1836 struct ttysize size
;
1837 size
.ts_lines
= height
;
1838 size
.ts_cols
= width
;
1840 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1846 #endif /* not SunOS-style */
1847 #endif /* not BSD-style */
1852 /* Prepare all terminal devices for exiting Emacs. */
1855 reset_all_sys_modes (void)
1857 struct tty_display_info
*tty
;
1858 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1859 reset_sys_modes (tty
);
1862 /* Prepare the terminal for closing it; move the cursor to the
1863 bottom of the frame, turn off interrupt-driven I/O, etc. */
1866 reset_sys_modes (tty_out
)
1867 struct tty_display_info
*tty_out
;
1874 if (!tty_out
->term_initted
)
1877 if (!tty_out
->output
)
1878 return; /* The tty is suspended. */
1880 /* Go to and clear the last line of the terminal. */
1882 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1884 /* Code adapted from tty_clear_end_of_line. */
1885 if (tty_out
->TS_clr_line
)
1887 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1890 { /* have to do it the hard way */
1892 turn_off_insert (tty_out
);
1894 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1896 fputc (' ', tty_out
->output
);
1900 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1901 fflush (tty_out
->output
);
1903 #if defined (IBMR2AIX) && defined (AIXHFT)
1905 /* HFT devices normally use ^J as a LF/CR. We forced it to
1906 do the LF only. Now, we need to reset it. */
1909 if (ioctl (1, HFTGETID
, &tty
) != -1)
1910 write (1, "\033[20h", 5);
1914 tty_reset_terminal_modes (tty_out
->display
);
1915 fflush (tty_out
->output
);
1918 /* Avoid possible loss of output when changing terminal modes. */
1919 fsync (fileno (tty_out
->output
));
1924 #ifndef F_SETOWN_BUG
1925 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1926 if (interrupt_input
)
1928 reset_sigio (fileno (tty_out
->input
));
1929 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1930 old_fcntl_owner
[fileno (tty_out
->input
)]);
1932 #endif /* F_SETOWN */
1933 #endif /* F_SETOWN_BUG */
1935 fcntl (fileno (tty_out
->input
), F_SETFL
,
1936 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1938 #endif /* F_SETFL */
1940 if (interrupt_input
)
1941 reset_sigio (fileno (tty_out
->input
));
1944 if (tty_out
->old_tty
)
1945 while (EMACS_SET_TTY (fileno (tty_out
->input
),
1946 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1949 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1953 #ifdef SET_LINE_DISCIPLINE
1954 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1955 A different old line discipline is therefore not restored, yet.
1956 Restore the old line discipline by hand. */
1957 ioctl (0, TIOCSETD
, &tty_out
->old_tty
.main
.c_line
);
1965 widen_foreground_group (fileno (tty_out
->input
));
1971 /* Set up the proper status flags for use of a pty. */
1977 /* I'm told that TOICREMOTE does not mean control chars
1978 "can't be sent" but rather that they don't have
1979 input-editing or signaling effects.
1980 That should be good, because we have other ways
1981 to do those things in Emacs.
1982 However, telnet mode seems not to work on 4.2.
1983 So TIOCREMOTE is turned off now. */
1985 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1986 will hang. In particular, the "timeout" feature (which
1987 causes a read to return if there is no data available)
1988 does this. Also it is known that telnet mode will hang
1989 in such a way that Emacs must be stopped (perhaps this
1990 is the same problem).
1992 If TIOCREMOTE is turned off, then there is a bug in
1993 hp-ux which sometimes loses data. Apparently the
1994 code which blocks the master process when the internal
1995 buffer fills up does not work. Other than this,
1996 though, everything else seems to work fine.
1998 Since the latter lossage is more benign, we may as well
1999 lose that way. -- cph */
2001 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
2004 ioctl (fd
, FIONBIO
, &on
);
2009 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
2010 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
2011 /* cause EMACS not to die when it should, i.e., when its own controlling */
2012 /* tty goes away. I've complained to the AIX developers, and they may */
2013 /* change this behavior, but I'm not going to hold my breath. */
2014 signal (SIGHUP
, SIG_IGN
);
2017 #endif /* HAVE_PTYS */
2021 /* Assigning an input channel is done at the start of Emacs execution.
2022 This is called each time Emacs is resumed, also, but does nothing
2023 because input_chain is no longer zero. */
2030 if (fileno (CURTTY ()->input
)) == 0)
2032 status
= SYS$
ASSIGN (&input_dsc
, &fileno (CURTTY ()->input
)), 0, 0);
2038 /* Deassigning the input channel is done before exiting. */
2043 return SYS$
DASSGN (fileno (CURTTY ()->input
)));
2048 /* Request reading one character into the keyboard buffer.
2049 This is done as soon as the buffer becomes empty. */
2055 extern kbd_input_ast ();
2057 waiting_for_ast
= 0;
2059 status
= SYS$
QIO (0, fileno (CURTTY()->input
), IO$_READVBLK
,
2060 &input_iosb
, kbd_input_ast
, 1,
2061 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
2066 /* Ast routine that is called when keyboard input comes in
2067 in accord with the SYS$QIO above. */
2072 register int c
= -1;
2073 int old_errno
= errno
;
2074 extern EMACS_TIME
*input_available_clear_time
;
2076 if (waiting_for_ast
)
2077 SYS$
SETEF (input_ef
);
2078 waiting_for_ast
= 0;
2081 if (input_count
== 25)
2083 printf ("Ast # %d,", input_count
);
2084 printf (" iosb = %x, %x, %x, %x",
2085 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
2088 if (input_iosb
.offset
)
2092 printf (", char = 0%o", c
);
2104 struct input_event e
;
2107 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2108 XSETINT (e
.code
, c
);
2109 e
.frame_or_window
= selected_frame
;
2110 kbd_buffer_store_event (&e
);
2112 if (input_available_clear_time
)
2113 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
2117 /* Wait until there is something in kbd_buffer. */
2120 wait_for_kbd_input ()
2122 extern int have_process_input
, process_exited
;
2124 /* If already something, avoid doing system calls. */
2125 if (detect_input_pending ())
2129 /* Clear a flag, and tell ast routine above to set it. */
2130 SYS$
CLREF (input_ef
);
2131 waiting_for_ast
= 1;
2132 /* Check for timing error: ast happened while we were doing that. */
2133 if (!detect_input_pending ())
2135 /* No timing error: wait for flag to be set. */
2136 set_waiting_for_input (0);
2137 SYS$
WFLOR (input_ef
, input_eflist
);
2138 clear_waiting_for_input ();
2139 if (!detect_input_pending ())
2140 /* Check for subprocess input availability */
2142 int dsp
= have_process_input
|| process_exited
;
2144 SYS$
CLREF (process_ef
);
2145 if (have_process_input
)
2146 process_command_input ();
2151 update_mode_lines
++;
2152 prepare_menu_bars ();
2153 redisplay_preserve_echo_area (18);
2157 waiting_for_ast
= 0;
2160 /* Get rid of any pending QIO, when we are about to suspend
2161 or when we want to throw away pending input.
2162 We wait for a positive sign that the AST routine has run
2163 and therefore there is no I/O request queued when we return.
2164 SYS$SETAST is used to avoid a timing error. */
2170 printf ("At end_kbd_input.\n");
2174 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2176 SYS$
CANCEL (fileno (CURTTY()->input
));
2181 /* Clear a flag, and tell ast routine above to set it. */
2182 SYS$
CLREF (input_ef
);
2183 waiting_for_ast
= 1;
2185 SYS$
CANCEL (fileno (CURTTY()->input
));
2187 SYS$
WAITFR (input_ef
);
2188 waiting_for_ast
= 0;
2191 /* Wait for either input available or time interval expiry. */
2194 input_wait_timeout (timeval
)
2195 int timeval
; /* Time to wait, in seconds */
2198 static int zero
= 0;
2199 static int large
= -10000000;
2201 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2203 /* If already something, avoid doing system calls. */
2204 if (detect_input_pending ())
2208 /* Clear a flag, and tell ast routine above to set it. */
2209 SYS$
CLREF (input_ef
);
2210 waiting_for_ast
= 1;
2211 /* Check for timing error: ast happened while we were doing that. */
2212 if (!detect_input_pending ())
2214 /* No timing error: wait for flag to be set. */
2216 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2217 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2219 waiting_for_ast
= 0;
2222 /* The standard `sleep' routine works some other way
2223 and it stops working if you have ever quit out of it.
2224 This one continues to work. */
2230 static int zero
= 0;
2231 static int large
= -10000000;
2233 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2236 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2237 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2256 croak ("request sigio");
2262 croak ("unrequest sigio");
2267 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2272 #ifndef SYSTEM_MALLOC
2279 /* Some systems that cannot dump also cannot implement these. */
2282 * Return the address of the start of the text segment prior to
2283 * doing an unexec. After unexec the return value is undefined.
2284 * See crt0.c for further explanation and _start.
2288 #if !(defined (__NetBSD__) && defined (__ELF__))
2289 #ifndef HAVE_TEXT_START
2294 return ((char *) TEXT_START
);
2298 return ((char *) csrt
);
2299 #else /* not GOULD */
2300 extern int _start ();
2301 return ((char *) _start
);
2303 #endif /* TEXT_START */
2305 #endif /* not HAVE_TEXT_START */
2309 * Return the address of the start of the data segment prior to
2310 * doing an unexec. After unexec the return value is undefined.
2311 * See crt0.c for further information and definition of data_start.
2313 * Apparently, on BSD systems this is etext at startup. On
2314 * USG systems (swapping) this is highly mmu dependent and
2315 * is also dependent on whether or not the program is running
2316 * with shared text. Generally there is a (possibly large)
2317 * gap between end of text and start of data with shared text.
2319 * On Uniplus+ systems with shared text, data starts at a
2320 * fixed address. Each port (from a given oem) is generally
2321 * different, and the specific value of the start of data can
2322 * be obtained via the UniPlus+ specific "uvar" system call,
2323 * however the method outlined in crt0.c seems to be more portable.
2325 * Probably what will have to happen when a USG unexec is available,
2326 * at least on UniPlus, is temacs will have to be made unshared so
2327 * that text and data are contiguous. Then once loadup is complete,
2328 * unexec will produce a shared executable where the data can be
2329 * at the normal shared text boundary and the startofdata variable
2330 * will be patched by unexec to the correct value.
2334 #ifndef start_of_data
2339 return ((char *) DATA_START
);
2341 #ifdef ORDINARY_LINK
2343 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2344 * data_start isn't defined. We take the address of environ, which
2345 * is known to live at or near the start of the system crt0.c, and
2346 * we don't sweat the handful of bytes that might lose.
2348 extern char **environ
;
2350 return ((char *) &environ
);
2352 extern int data_start
;
2353 return ((char *) &data_start
);
2354 #endif /* ORDINARY_LINK */
2355 #endif /* DATA_START */
2357 #endif /* start_of_data */
2358 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2360 /* init_system_name sets up the string for the Lisp function
2361 system-name to return. */
2367 extern Lisp_Object Vsystem_name
;
2372 #include <sys/socket.h>
2374 #endif /* HAVE_SOCKETS */
2375 #endif /* not VMS */
2376 #endif /* not BSD4_1 */
2379 #ifndef HAVE_H_ERRNO
2382 #endif /* TRY_AGAIN */
2388 Vsystem_name
= build_string (sysname
);
2392 if ((sp
= egetenv ("SYS$NODE")) == 0)
2393 Vsystem_name
= build_string ("vax-vms");
2394 else if ((end
= index (sp
, ':')) == 0)
2395 Vsystem_name
= build_string (sp
);
2397 Vsystem_name
= make_string (sp
, end
- sp
);
2399 #ifndef HAVE_GETHOSTNAME
2402 Vsystem_name
= build_string (uts
.nodename
);
2403 #else /* HAVE_GETHOSTNAME */
2404 unsigned int hostname_size
= 256;
2405 char *hostname
= (char *) alloca (hostname_size
);
2407 /* Try to get the host name; if the buffer is too short, try
2408 again. Apparently, the only indication gethostname gives of
2409 whether the buffer was large enough is the presence or absence
2410 of a '\0' in the string. Eech. */
2413 gethostname (hostname
, hostname_size
- 1);
2414 hostname
[hostname_size
- 1] = '\0';
2416 /* Was the buffer large enough for the '\0'? */
2417 if (strlen (hostname
) < hostname_size
- 1)
2420 hostname_size
<<= 1;
2421 hostname
= (char *) alloca (hostname_size
);
2424 /* Turn the hostname into the official, fully-qualified hostname.
2425 Don't do this if we're going to dump; this can confuse system
2426 libraries on some machines and make the dumped emacs core dump. */
2429 #endif /* not CANNOT_DUMP */
2430 if (! index (hostname
, '.'))
2434 for (count
= 0;; count
++)
2439 hp
= gethostbyname (hostname
);
2441 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2446 Fsleep_for (make_number (1), Qnil
);
2450 char *fqdn
= (char *) hp
->h_name
;
2455 if (!index (fqdn
, '.'))
2457 /* We still don't have a fully qualified domain name.
2458 Try to find one in the list of alternate names */
2459 char **alias
= hp
->h_aliases
;
2460 while (*alias
&& !index (*alias
, '.'))
2467 /* Convert the host name to lower case. */
2468 /* Using ctype.h here would introduce a possible locale
2469 dependence that is probably wrong for hostnames. */
2473 if (*p
>= 'A' && *p
<= 'Z')
2480 #endif /* HAVE_SOCKETS */
2481 /* We used to try using getdomainname here,
2482 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2483 getdomainname gets the NIS/YP domain which often is not the same
2484 as in Internet domain name. */
2485 #if 0 /* Turned off because sysinfo is not really likely to return the
2486 correct Internet domain. */
2487 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2488 if (! index (hostname
, '.'))
2490 /* The hostname is not fully qualified. Append the domain name. */
2492 int hostlen
= strlen (hostname
);
2493 int domain_size
= 256;
2497 char *domain
= (char *) alloca (domain_size
+ 1);
2498 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2499 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2500 if (sys_domain_size
<= 0)
2502 if (domain_size
< sys_domain_size
)
2504 domain_size
= sys_domain_size
;
2507 strcpy (fqdn
, hostname
);
2508 if (domain
[0] == '.')
2509 strcpy (fqdn
+ hostlen
, domain
);
2510 else if (domain
[0] != 0)
2512 fqdn
[hostlen
] = '.';
2513 strcpy (fqdn
+ hostlen
+ 1, domain
);
2519 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2521 Vsystem_name
= build_string (hostname
);
2522 #endif /* HAVE_GETHOSTNAME */
2527 for (p
= SDATA (Vsystem_name
); *p
; p
++)
2528 if (*p
== ' ' || *p
== '\t')
2535 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2537 #include "sysselect.h"
2540 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2541 /* Cause explanatory error message at compile time,
2542 since the select emulation is not good enough for X. */
2543 int *x
= &x_windows_lose_if_no_select_system_call
;
2546 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2547 * Only checks read descriptors.
2549 /* How long to wait between checking fds in select */
2550 #define SELECT_PAUSE 1
2553 /* For longjmp'ing back to read_input_waiting. */
2555 jmp_buf read_alarm_throw
;
2557 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2558 The read_socket_hook function sets this to 1 while it is waiting. */
2560 int read_alarm_should_throw
;
2568 #else /* not BSD4_1 */
2569 signal (SIGALRM
, SIG_IGN
);
2570 #endif /* not BSD4_1 */
2571 if (read_alarm_should_throw
)
2572 longjmp (read_alarm_throw
, 1);
2576 /* Only rfds are checked. */
2578 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2580 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2581 EMACS_TIME
*timeout
;
2583 /* XXX This needs to be updated for multi-tty support. Is there
2584 anybody who needs to emulate select these days? */
2589 extern int proc_buffered_char
[];
2590 #ifndef subprocesses
2591 int process_tick
= 0, update_tick
= 0;
2593 extern int process_tick
, update_tick
;
2597 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2598 /* If we're using X, then the native select will work; we only need the
2599 emulation for non-X usage. */
2600 if (!NILP (Vinitial_window_system
))
2601 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2603 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2604 local_timeout
= &timeoutval
;
2616 /* If we are looking only for the terminal, with no timeout,
2617 just read it and wait -- that's more efficient. */
2618 if (*local_timeout
== 100000 && process_tick
== update_tick
2619 && FD_ISSET (0, &orfds
))
2622 for (fd
= 1; fd
< nfds
; ++fd
)
2623 if (FD_ISSET (fd
, &orfds
))
2625 if (! detect_input_pending ())
2626 read_input_waiting ();
2632 /* Once a second, till the timer expires, check all the flagged read
2633 * descriptors to see if any input is available. If there is some then
2634 * set the corresponding bit in the return copy of rfds.
2638 register int to_check
, fd
;
2642 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2644 if (FD_ISSET (fd
, &orfds
))
2646 int avail
= 0, status
= 0;
2649 avail
= detect_input_pending (); /* Special keyboard handler */
2653 status
= ioctl (fd
, FIONREAD
, &avail
);
2654 #else /* no FIONREAD */
2655 /* Hoping it will return -1 if nothing available
2656 or 0 if all 0 chars requested are read. */
2657 if (proc_buffered_char
[fd
] >= 0)
2661 avail
= read (fd
, &buf
, 1);
2663 proc_buffered_char
[fd
] = buf
;
2665 #endif /* no FIONREAD */
2667 if (status
>= 0 && avail
> 0)
2675 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2678 turn_on_atimers (0);
2679 signal (SIGALRM
, select_alarm
);
2681 alarm (SELECT_PAUSE
);
2683 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2684 while (select_alarmed
== 0 && *local_timeout
!= 0
2685 && process_tick
== update_tick
)
2687 /* If we are interested in terminal input,
2688 wait by reading the terminal.
2689 That makes instant wakeup for terminal input at least. */
2690 if (FD_ISSET (0, &orfds
))
2692 read_input_waiting ();
2693 if (detect_input_pending ())
2699 (*local_timeout
) -= SELECT_PAUSE
;
2701 /* Reset the old alarm if there was one. */
2702 turn_on_atimers (1);
2704 if (*local_timeout
== 0) /* Stop on timer being cleared */
2709 #endif not WINDOWSNT
2711 /* Read keyboard input into the standard buffer,
2712 waiting for at least one character. */
2715 read_input_waiting ()
2717 /* XXX This needs to be updated for multi-tty support. Is there
2718 anybody who needs to emulate select these days? */
2720 extern int quit_char
;
2722 if (read_socket_hook
)
2724 struct input_event hold_quit
;
2726 EVENT_INIT (hold_quit
);
2727 hold_quit
.kind
= NO_EVENT
;
2729 read_alarm_should_throw
= 0;
2730 if (! setjmp (read_alarm_throw
))
2731 nread
= (*read_socket_hook
) (0, 1, &hold_quit
);
2735 if (hold_quit
.kind
!= NO_EVENT
)
2736 kbd_buffer_store_event (&hold_quit
);
2740 struct input_event e
;
2742 nread
= read (fileno (stdin
), buf
, 1);
2745 /* Scan the chars for C-g and store them in kbd_buffer. */
2746 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2747 e
.frame_or_window
= selected_frame
;
2749 for (i
= 0; i
< nread
; i
++)
2751 /* Convert chars > 0177 to meta events if desired.
2752 We do this under the same conditions that read_avail_input does. */
2753 if (read_socket_hook
== 0)
2755 /* If the user says she has a meta key, then believe her. */
2756 if (meta_key
== 1 && (buf
[i
] & 0x80))
2757 e
.modifiers
= meta_modifier
;
2762 XSETINT (e
.code
, buf
[i
]);
2763 kbd_buffer_store_event (&e
);
2764 /* Don't look at input that follows a C-g too closely.
2765 This reduces lossage due to autorepeat on C-g. */
2766 if (buf
[i
] == quit_char
)
2772 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2773 #define select sys_select
2776 #endif /* not HAVE_SELECT */
2777 #endif /* not VMS */
2778 #endif /* not MSDOS */
2787 lmode
= LINTRUP
| lmode
;
2788 ioctl (fd
, TIOCLSET
, &lmode
);
2797 lmode
= ~LINTRUP
& lmode
;
2798 ioctl (fd
, TIOCLSET
, &lmode
);
2806 interrupts_deferred
= 0;
2814 interrupts_deferred
= 1;
2817 /* still inside #ifdef BSD4_1 */
2820 int sigheld
; /* Mask of held signals */
2826 sigheld
|= sigbit (signum
);
2834 sigheld
|= sigbit (signum
);
2841 sigheld
&= ~sigbit (signum
);
2846 sigfree () /* Free all held signals */
2849 for (i
= 0; i
< NSIG
; i
++)
2850 if (sigheld
& sigbit (i
))
2858 return 1 << (i
- 1);
2860 #endif /* subprocesses */
2863 /* POSIX signals support - DJB */
2864 /* Anyone with POSIX signals should have ANSI C declarations */
2866 #ifdef POSIX_SIGNALS
2868 sigset_t empty_mask
, full_mask
;
2871 sys_signal (int signal_number
, signal_handler_t action
)
2873 struct sigaction new_action
, old_action
;
2874 sigemptyset (&new_action
.sa_mask
);
2875 new_action
.sa_handler
= action
;
2876 #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART)
2877 /* Emacs mostly works better with restartable system services. If this
2878 flag exists, we probably want to turn it on here.
2879 However, on some systems this resets the timeout of `select'
2880 which means that `select' never finishes if it keeps getting signals.
2881 BROKEN_SA_RESTART is defined on those systems. */
2882 new_action
.sa_flags
= SA_RESTART
;
2884 new_action
.sa_flags
= 0;
2886 sigaction (signal_number
, &new_action
, &old_action
);
2887 return (old_action
.sa_handler
);
2891 /* If we're compiling with GCC, we don't need this function, since it
2892 can be written as a macro. */
2894 sys_sigmask (int sig
)
2897 sigemptyset (&mask
);
2898 sigaddset (&mask
, sig
);
2903 /* I'd like to have these guys return pointers to the mask storage in here,
2904 but there'd be trouble if the code was saving multiple masks. I'll be
2905 safe and pass the structure. It normally won't be more than 2 bytes
2909 sys_sigblock (sigset_t new_mask
)
2912 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2917 sys_sigunblock (sigset_t new_mask
)
2920 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2925 sys_sigsetmask (sigset_t new_mask
)
2928 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2932 #endif /* POSIX_SIGNALS */
2934 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2935 static char *my_sys_siglist
[NSIG
];
2939 # define sys_siglist my_sys_siglist
2945 #ifdef POSIX_SIGNALS
2946 sigemptyset (&empty_mask
);
2947 sigfillset (&full_mask
);
2950 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2954 sys_siglist
[SIGABRT
] = "Aborted";
2957 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2960 sys_siglist
[SIGALRM
] = "Alarm clock";
2963 sys_siglist
[SIGBUS
] = "Bus error";
2966 sys_siglist
[SIGCLD
] = "Child status changed";
2969 sys_siglist
[SIGCHLD
] = "Child status changed";
2972 sys_siglist
[SIGCONT
] = "Continued";
2975 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2978 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2981 sys_siglist
[SIGEMT
] = "Emulation trap";
2984 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2987 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2990 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
2993 sys_siglist
[SIGHUP
] = "Hangup";
2996 sys_siglist
[SIGILL
] = "Illegal instruction";
2999 sys_siglist
[SIGINT
] = "Interrupt";
3002 sys_siglist
[SIGIO
] = "I/O possible";
3005 sys_siglist
[SIGIOINT
] = "I/O intervention required";
3008 sys_siglist
[SIGIOT
] = "IOT trap";
3011 sys_siglist
[SIGKILL
] = "Killed";
3014 sys_siglist
[SIGLOST
] = "Resource lost";
3017 sys_siglist
[SIGLWP
] = "SIGLWP";
3020 sys_siglist
[SIGMSG
] = "Monitor mode data available";
3023 sys_siglist
[SIGWIND
] = "SIGPHONE";
3026 sys_siglist
[SIGPIPE
] = "Broken pipe";
3029 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
3032 sys_siglist
[SIGPROF
] = "Profiling timer expired";
3035 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
3038 sys_siglist
[SIGPWR
] = "Power-fail restart";
3041 sys_siglist
[SIGQUIT
] = "Quit";
3044 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
3047 sys_siglist
[SIGSAK
] = "Secure attention";
3050 sys_siglist
[SIGSEGV
] = "Segmentation violation";
3053 sys_siglist
[SIGSOUND
] = "Sound completed";
3056 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
3059 sys_siglist
[SIGSTP
] = "Stopped (user)";
3062 sys_siglist
[SIGSYS
] = "Bad argument to system call";
3065 sys_siglist
[SIGTERM
] = "Terminated";
3068 sys_siglist
[SIGTHAW
] = "SIGTHAW";
3071 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
3074 sys_siglist
[SIGTSTP
] = "Stopped (user)";
3077 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
3080 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
3083 sys_siglist
[SIGURG
] = "Urgent I/O condition";
3086 sys_siglist
[SIGUSR1
] = "User defined signal 1";
3089 sys_siglist
[SIGUSR2
] = "User defined signal 2";
3092 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
3095 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
3098 sys_siglist
[SIGWINCH
] = "Window size changed";
3101 sys_siglist
[SIGWIND
] = "SIGWIND";
3104 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
3107 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
3110 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
3119 /* Figure out how many bits the system's random number generator uses.
3120 `random' and `lrand48' are assumed to return 31 usable bits.
3121 BSD `rand' returns a 31 bit value but the low order bits are unusable;
3122 so we'll shift it and treat it like the 15-bit USG `rand'. */
3126 # define RAND_BITS 31
3127 # else /* !HAVE_RANDOM */
3128 # ifdef HAVE_LRAND48
3129 # define RAND_BITS 31
3130 # define random lrand48
3131 # else /* !HAVE_LRAND48 */
3132 # define RAND_BITS 15
3133 # if RAND_MAX == 32767
3134 # define random rand
3135 # else /* RAND_MAX != 32767 */
3136 # if RAND_MAX == 2147483647
3137 # define random() (rand () >> 16)
3138 # else /* RAND_MAX != 2147483647 */
3140 # define random rand
3142 # define random() (rand () >> 16)
3144 # endif /* RAND_MAX != 2147483647 */
3145 # endif /* RAND_MAX != 32767 */
3146 # endif /* !HAVE_LRAND48 */
3147 # endif /* !HAVE_RANDOM */
3148 #endif /* !RAND_BITS */
3155 srandom ((unsigned int)arg
);
3157 # ifdef HAVE_LRAND48
3160 srand ((unsigned int)arg
);
3166 * Build a full Emacs-sized word out of whatever we've got.
3167 * This suffices even for a 64-bit architecture with a 15-bit rand.
3172 long val
= random ();
3173 #if VALBITS > RAND_BITS
3174 val
= (val
<< RAND_BITS
) ^ random ();
3175 #if VALBITS > 2*RAND_BITS
3176 val
= (val
<< RAND_BITS
) ^ random ();
3177 #if VALBITS > 3*RAND_BITS
3178 val
= (val
<< RAND_BITS
) ^ random ();
3179 #if VALBITS > 4*RAND_BITS
3180 val
= (val
<< RAND_BITS
) ^ random ();
3181 #endif /* need at least 5 */
3182 #endif /* need at least 4 */
3183 #endif /* need at least 3 */
3184 #endif /* need at least 2 */
3185 return val
& ((1L << VALBITS
) - 1);
3188 #ifdef WRONG_NAME_INSQUE
3201 /* If any place else asks for the TERM variable,
3202 allow it to be overridden with the EMACS_TERM variable
3203 before attempting to translate the logical name TERM. As a last
3204 resort, ask for VAX C's special idea of the TERM variable. */
3211 static char buf
[256];
3212 static struct dsc$descriptor_s equiv
3213 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3214 static struct dsc$descriptor_s d_name
3215 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3218 if (!strcmp (name
, "TERM"))
3220 val
= (char *) getenv ("EMACS_TERM");
3225 d_name
.dsc$w_length
= strlen (name
);
3226 d_name
.dsc$a_pointer
= name
;
3227 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3229 char *str
= (char *) xmalloc (eqlen
+ 1);
3230 bcopy (buf
, str
, eqlen
);
3232 /* This is a storage leak, but a pain to fix. With luck,
3233 no one will ever notice. */
3236 return (char *) getenv (name
);
3241 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3242 to force a call on the debugger from within the image. */
3246 reset_all_sys_modes ();
3247 LIB$
SIGNAL (SS$_DEBUG
);
3253 #ifdef LINK_CRTL_SHARE
3254 #ifdef SHARABLE_LIB_BUG
3255 /* Variables declared noshare and initialized in sharable libraries
3256 cannot be shared. The VMS linker incorrectly forces you to use a private
3257 version which is uninitialized... If not for this "feature", we
3258 could use the C library definition of sys_nerr and sys_errlist. */
3260 char *sys_errlist
[] =
3264 "no such file or directory",
3266 "interrupted system call",
3268 "no such device or address",
3269 "argument list too long",
3270 "exec format error",
3273 "no more processes",
3274 "not enough memory",
3275 "permission denied",
3277 "block device required",
3278 "mount devices busy",
3280 "cross-device link",
3285 "file table overflow",
3286 "too many open files",
3290 "no space left on device",
3292 "read-only file system",
3298 "vax/vms specific error code nontranslatable error"
3300 #endif /* SHARABLE_LIB_BUG */
3301 #endif /* LINK_CRTL_SHARE */
3304 #ifndef HAVE_STRERROR
3310 extern char *sys_errlist
[];
3311 extern int sys_nerr
;
3313 if (errnum
>= 0 && errnum
< sys_nerr
)
3314 return sys_errlist
[errnum
];
3315 return (char *) "Unknown error";
3317 #endif /* not WINDOWSNT */
3318 #endif /* ! HAVE_STRERROR */
3321 emacs_open (path
, oflag
, mode
)
3325 register int rtnval
;
3328 if (oflag
& O_CREAT
)
3329 return creat (path
, mode
);
3332 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3333 && (errno
== EINTR
));
3342 register int rtnval
;
3344 while ((rtnval
= close (fd
)) == -1
3345 && (errno
== EINTR
))
3348 /* If close is interrupted SunOS 4.1 may or may not have closed the
3349 file descriptor. If it did the second close will fail with
3350 errno = EBADF. That means we have succeeded. */
3351 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3358 emacs_read (fildes
, buf
, nbyte
)
3363 register int rtnval
;
3365 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3366 && (errno
== EINTR
));
3371 emacs_write (fildes
, buf
, nbyte
)
3376 register int rtnval
, bytes_written
;
3382 rtnval
= write (fildes
, buf
, nbyte
);
3389 return (bytes_written
? bytes_written
: -1);
3394 bytes_written
+= rtnval
;
3396 return (bytes_written
);
3401 * All of the following are for USG.
3403 * On USG systems the system calls are INTERRUPTIBLE by signals
3404 * that the user program has elected to catch. Thus the system call
3405 * must be retried in these cases. To handle this without massive
3406 * changes in the source code, we remap the standard system call names
3407 * to names for our own functions in sysdep.c that do the system call
3408 * with retries. Actually, for portability reasons, it is good
3409 * programming practice, as this example shows, to limit all actual
3410 * system calls to a single occurrence in the source. Sure, this
3411 * adds an extra level of function call overhead but it is almost
3412 * always negligible. Fred Fish, Unisoft Systems Inc.
3416 * Warning, this function may not duplicate 4.2 action properly
3417 * under error conditions.
3421 /* In 4.1, param.h fails to define this. */
3422 #define MAXPATHLEN 1024
3431 char *npath
, *spath
;
3432 extern char *getcwd ();
3434 BLOCK_INPUT
; /* getcwd uses malloc */
3435 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3441 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3442 up to first slash. Should be harmless on other systems. */
3443 while (*npath
&& *npath
!= '/')
3445 strcpy (pathname
, npath
);
3446 free (spath
); /* getcwd uses malloc */
3451 #endif /* HAVE_GETWD */
3454 * Emulate rename using unlink/link. Note that this is
3455 * only partially correct. Also, doesn't enforce restriction
3456 * that files be of same type (regular->regular, dir->dir, etc).
3465 if (access (from
, 0) == 0)
3468 if (link (from
, to
) == 0)
3469 if (unlink (from
) == 0)
3481 /* HPUX curses library references perror, but as far as we know
3482 it won't be called. Anyway this definition will do for now. */
3488 #endif /* not HAVE_PERROR */
3494 * Emulate BSD dup2. First close newd if it already exists.
3495 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3496 * until we are, then close the unsuccessful ones.
3503 register int fd
, ret
;
3508 return fcntl (oldd
, F_DUPFD
, newd
);
3515 ret
= dup2 (old
,new);
3521 #endif /* not HAVE_DUP2 */
3524 * Gettimeofday. Simulate as much as possible. Only accurate
3525 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3526 * Only needed when subprocesses are defined.
3531 #ifndef HAVE_GETTIMEOFDAY
3536 gettimeofday (tp
, tzp
)
3538 struct timezone
*tzp
;
3540 extern long time ();
3542 tp
->tv_sec
= time ((long *)0);
3545 tzp
->tz_minuteswest
= -1;
3552 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3555 * This function will go away as soon as all the stubs fixed. (fnf)
3562 printf ("%s not yet implemented\r\n", badfunc
);
3563 reset_all_sys_modes ();
3569 /* Directory routines for systems that don't have them. */
3571 #ifdef SYSV_SYSTEM_DIR
3575 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3579 register DIR *dirp
; /* stream from opendir */
3583 rtnval
= emacs_close (dirp
->dd_fd
);
3585 /* Some systems (like Solaris) allocate the buffer and the DIR all
3586 in one block. Why in the world are we freeing this ourselves
3588 #if ! (defined (sun) && defined (USG5_4))
3589 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3591 xfree ((char *) dirp
);
3595 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3596 #endif /* SYSV_SYSTEM_DIR */
3598 #ifdef NONSYSTEM_DIR_LIBRARY
3602 char *filename
; /* name of directory */
3604 register DIR *dirp
; /* -> malloc'ed storage */
3605 register int fd
; /* file descriptor for read */
3606 struct stat sbuf
; /* result of fstat */
3608 fd
= emacs_open (filename
, O_RDONLY
, 0);
3613 if (fstat (fd
, &sbuf
) < 0
3614 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3615 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3619 return 0; /* bad luck today */
3624 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3631 register DIR *dirp
; /* stream from opendir */
3633 emacs_close (dirp
->dd_fd
);
3634 xfree ((char *) dirp
);
3642 ino_t od_ino
; /* inode */
3643 char od_name
[DIRSIZ
]; /* filename */
3645 #endif /* not VMS */
3647 struct direct dir_static
; /* simulated directory contents */
3652 register DIR *dirp
; /* stream from opendir */
3655 register struct olddir
*dp
; /* -> directory data */
3657 register struct dir$_name
*dp
; /* -> directory data */
3658 register struct dir$_version
*dv
; /* -> version data */
3663 if (dirp
->dd_loc
>= dirp
->dd_size
)
3664 dirp
->dd_loc
= dirp
->dd_size
= 0;
3666 if (dirp
->dd_size
== 0 /* refill buffer */
3667 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3671 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3672 dirp
->dd_loc
+= sizeof (struct olddir
);
3674 if (dp
->od_ino
!= 0) /* not deleted entry */
3676 dir_static
.d_ino
= dp
->od_ino
;
3677 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3678 dir_static
.d_name
[DIRSIZ
] = '\0';
3679 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3680 dir_static
.d_reclen
= sizeof (struct direct
)
3682 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3683 return &dir_static
; /* -> simulated structure */
3686 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3687 if (dirp
->dd_loc
== 0)
3688 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3689 : dp
->dir$b_namecount
;
3690 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3691 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3692 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3693 dir_static
.d_reclen
= sizeof (struct direct
)
3695 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3696 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3697 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3698 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3705 /* readdirver is just like readdir except it returns all versions of a file
3706 as separate entries. */
3711 register DIR *dirp
; /* stream from opendir */
3713 register struct dir$_name
*dp
; /* -> directory data */
3714 register struct dir$_version
*dv
; /* -> version data */
3716 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3717 dirp
->dd_loc
= dirp
->dd_size
= 0;
3719 if (dirp
->dd_size
== 0 /* refill buffer */
3720 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3723 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3724 if (dirp
->dd_loc
== 0)
3725 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3726 : dp
->dir$b_namecount
;
3727 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3728 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3729 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3730 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3731 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3732 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3733 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3734 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3740 #endif /* NONSYSTEM_DIR_LIBRARY */
3744 set_file_times (filename
, atime
, mtime
)
3745 const char *filename
;
3746 EMACS_TIME atime
, mtime
;
3749 struct timeval tv
[2];
3752 return utimes (filename
, tv
);
3753 #else /* not HAVE_UTIMES */
3755 utb
.actime
= EMACS_SECS (atime
);
3756 utb
.modtime
= EMACS_SECS (mtime
);
3757 return utime (filename
, &utb
);
3758 #endif /* not HAVE_UTIMES */
3761 /* mkdir and rmdir functions, for systems which don't have them. */
3765 * Written by Robert Rother, Mariah Corporation, August 1985.
3767 * If you want it, it's yours. All I ask in return is that if you
3768 * figure out how to do this in a Bourne Shell script you send me
3770 * sdcsvax!rmr or rmr@uscd
3772 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3773 * subroutine. 11Mar86; hoptoad!gnu
3775 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3776 * subroutine didn't return EEXIST. It does now.
3782 #ifdef MKDIR_PROTOTYPE
3786 mkdir (dpath
, dmode
)
3791 int cpid
, status
, fd
;
3792 struct stat statbuf
;
3794 if (stat (dpath
, &statbuf
) == 0)
3796 errno
= EEXIST
; /* Stat worked, so it already exists */
3800 /* If stat fails for a reason other than non-existence, return error */
3801 if (errno
!= ENOENT
)
3804 synch_process_alive
= 1;
3805 switch (cpid
= fork ())
3808 case -1: /* Error in fork */
3809 return (-1); /* Errno is set already */
3811 case 0: /* Child process */
3813 * Cheap hack to set mode of new directory. Since this
3814 * child process is going away anyway, we zap its umask.
3815 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3816 * directory. Does anybody care?
3818 status
= umask (0); /* Get current umask */
3819 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3820 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3827 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3828 _exit (-1); /* Can't exec /bin/mkdir */
3830 default: /* Parent process */
3831 wait_for_termination (cpid
);
3834 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3835 || synch_process_termsig
!= 0)
3837 errno
= EIO
; /* We don't know why, but */
3838 return -1; /* /bin/mkdir failed */
3843 #endif /* not HAVE_MKDIR */
3850 int cpid
, status
, fd
;
3851 struct stat statbuf
;
3853 if (stat (dpath
, &statbuf
) != 0)
3855 /* Stat just set errno. We don't have to */
3859 synch_process_alive
= 1;
3860 switch (cpid
= fork ())
3863 case -1: /* Error in fork */
3864 return (-1); /* Errno is set already */
3866 case 0: /* Child process */
3867 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3874 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3875 _exit (-1); /* Can't exec /bin/rmdir */
3877 default: /* Parent process */
3878 wait_for_termination (cpid
);
3881 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3882 || synch_process_termsig
!= 0)
3884 errno
= EIO
; /* We don't know why, but */
3885 return -1; /* /bin/rmdir failed */
3890 #endif /* !HAVE_RMDIR */
3894 /* Functions for VMS */
3896 #include "vms-pwd.h"
3901 /* Return as a string the VMS error string pertaining to STATUS.
3902 Reuses the same static buffer each time it is called. */
3906 int status
; /* VMS status code */
3910 static char buf
[257];
3912 bufadr
[0] = sizeof buf
- 1;
3913 bufadr
[1] = (int) buf
;
3914 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3915 return "untranslatable VMS error status";
3923 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3924 * not work correctly. (It also doesn't work well in version 2.3.)
3929 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3930 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3934 unsigned short s_buflen
;
3935 unsigned short s_code
;
3937 unsigned short *s_retlenadr
;
3941 #define buflen s.s_buflen
3942 #define code s.s_code
3943 #define bufadr s.s_bufadr
3944 #define retlenadr s.s_retlenadr
3946 #define R_OK 4 /* test for read permission */
3947 #define W_OK 2 /* test for write permission */
3948 #define X_OK 1 /* test for execute (search) permission */
3949 #define F_OK 0 /* test for presence of file */
3952 sys_access (path
, mode
)
3956 static char *user
= NULL
;
3959 /* translate possible directory spec into .DIR file name, so brain-dead
3960 * access can treat the directory like a file. */
3961 if (directory_file_name (path
, dir_fn
))
3965 return access (path
, mode
);
3966 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3972 unsigned short int dummy
;
3974 static int constant
= ACL$C_FILE
;
3975 DESCRIPTOR (path_desc
, path
);
3976 DESCRIPTOR (user_desc
, user
);
3980 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3983 acces
|= CHP$M_READ
;
3985 acces
|= CHP$M_WRITE
;
3986 itemlst
[0].buflen
= sizeof (int);
3987 itemlst
[0].code
= CHP$_FLAGS
;
3988 itemlst
[0].bufadr
= (char *) &flags
;
3989 itemlst
[0].retlenadr
= &dummy
;
3990 itemlst
[1].buflen
= sizeof (int);
3991 itemlst
[1].code
= CHP$_ACCESS
;
3992 itemlst
[1].bufadr
= (char *) &acces
;
3993 itemlst
[1].retlenadr
= &dummy
;
3994 itemlst
[2].end
= CHP$_END
;
3995 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3996 return stat
== SS$_NORMAL
? 0 : -1;
4000 #else /* not VMS4_4 */
4003 #define ACE$M_WRITE 2
4004 #define ACE$C_KEYID 1
4006 static unsigned short memid
, grpid
;
4007 static unsigned int uic
;
4009 /* Called from init_sys_modes, so it happens not very often
4010 but at least each time Emacs is loaded. */
4012 sys_access_reinit ()
4018 sys_access (filename
, type
)
4024 int status
, size
, i
, typecode
, acl_controlled
;
4025 unsigned int *aclptr
, *aclend
, aclbuf
[60];
4026 union prvdef prvmask
;
4028 /* Get UIC and GRP values for protection checking. */
4031 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
4034 memid
= uic
& 0xFFFF;
4038 if (type
!= 2) /* not checking write access */
4039 return access (filename
, type
);
4041 /* Check write protection. */
4043 #define CHECKPRIV(bit) (prvmask.bit)
4044 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
4046 /* Find privilege bits */
4047 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
4049 error ("Unable to find privileges: %s", vmserrstr (status
));
4050 if (CHECKPRIV (PRV$V_BYPASS
))
4051 return 0; /* BYPASS enabled */
4053 fab
.fab$b_fac
= FAB$M_GET
;
4054 fab
.fab$l_fna
= filename
;
4055 fab
.fab$b_fns
= strlen (filename
);
4056 fab
.fab$l_xab
= &xab
;
4057 xab
= cc$rms_xabpro
;
4058 xab
.xab$l_aclbuf
= aclbuf
;
4059 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
4060 status
= SYS$
OPEN (&fab
, 0, 0);
4063 SYS$
CLOSE (&fab
, 0, 0);
4064 /* Check system access */
4065 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
4067 /* Check ACL entries, if any */
4069 if (xab
.xab$w_acllen
> 0)
4072 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
4073 while (*aclptr
&& aclptr
< aclend
)
4075 size
= (*aclptr
& 0xff) / 4;
4076 typecode
= (*aclptr
>> 8) & 0xff;
4077 if (typecode
== ACE$C_KEYID
)
4078 for (i
= size
- 1; i
> 1; i
--)
4079 if (aclptr
[i
] == uic
)
4082 if (aclptr
[1] & ACE$M_WRITE
)
4083 return 0; /* Write access through ACL */
4085 aclptr
= &aclptr
[size
];
4087 if (acl_controlled
) /* ACL specified, prohibits write access */
4090 /* No ACL entries specified, check normal protection */
4091 if (WRITABLE (XAB$V_WLD
)) /* World writable */
4093 if (WRITABLE (XAB$V_GRP
) &&
4094 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
4095 return 0; /* Group writable */
4096 if (WRITABLE (XAB$V_OWN
) &&
4097 (xab
.xab$l_uic
& 0xFFFF) == memid
)
4098 return 0; /* Owner writable */
4100 return -1; /* Not writable */
4102 #endif /* not VMS4_4 */
4105 static char vtbuf
[NAM$C_MAXRSS
+1];
4107 /* translate a vms file spec to a unix path */
4109 sys_translate_vms (vfile
)
4120 /* leading device or logical name is a root directory */
4121 if (p
= strchr (vfile
, ':'))
4130 if (*p
== '[' || *p
== '<')
4132 while (*++vfile
!= *p
+ 2)
4136 if (vfile
[-1] == *p
)
4159 static char utbuf
[NAM$C_MAXRSS
+1];
4161 /* translate a unix path to a VMS file spec */
4163 sys_translate_unix (ufile
)
4186 if (index (&ufile
[1], '/'))
4193 if (index (&ufile
[1], '/'))
4200 if (strncmp (ufile
, "./", 2) == 0)
4207 ufile
++; /* skip the dot */
4208 if (index (&ufile
[1], '/'))
4213 else if (strncmp (ufile
, "../", 3) == 0)
4221 ufile
+= 2; /* skip the dots */
4222 if (index (&ufile
[1], '/'))
4247 extern char *getcwd ();
4249 #define MAXPATHLEN 1024
4251 ptr
= xmalloc (MAXPATHLEN
);
4252 val
= getcwd (ptr
, MAXPATHLEN
);
4258 strcpy (pathname
, ptr
);
4267 long item_code
= JPI$_OWNER
;
4268 unsigned long parent_id
;
4271 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4274 vaxc$errno
= status
;
4284 return (getgid () << 16) | getuid ();
4289 sys_read (fildes
, buf
, nbyte
)
4294 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4299 sys_write (fildes
, buf
, nbyte
)
4304 register int nwrote
, rtnval
= 0;
4306 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4312 return rtnval
? rtnval
: -1;
4313 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4314 return rtnval
? rtnval
: -1;
4315 return (rtnval
+ nwrote
);
4320 * VAX/VMS VAX C RTL really loses. It insists that records
4321 * end with a newline (carriage return) character, and if they
4322 * don't it adds one (nice of it isn't it!)
4324 * Thus we do this stupidity below.
4329 sys_write (fildes
, buf
, nbytes
)
4332 unsigned int nbytes
;
4339 fstat (fildes
, &st
);
4345 /* Handle fixed-length files with carriage control. */
4346 if (st
.st_fab_rfm
== FAB$C_FIX
4347 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4349 len
= st
.st_fab_mrs
;
4350 retval
= write (fildes
, p
, min (len
, nbytes
));
4353 retval
++; /* This skips the implied carriage control */
4357 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4358 while (*e
!= '\n' && e
> p
) e
--;
4359 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4360 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4362 retval
= write (fildes
, p
, len
);
4373 /* Create file NEW copying its attributes from file OLD. If
4374 OLD is 0 or does not exist, create based on the value of
4377 /* Protection value the file should ultimately have.
4378 Set by create_copy_attrs, and use by rename_sansversions. */
4379 static unsigned short int fab_final_pro
;
4382 creat_copy_attrs (old
, new)
4385 struct FAB fab
= cc$rms_fab
;
4386 struct XABPRO xabpro
;
4387 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4388 extern int vms_stmlf_recfm
;
4392 fab
.fab$b_fac
= FAB$M_GET
;
4393 fab
.fab$l_fna
= old
;
4394 fab
.fab$b_fns
= strlen (old
);
4395 fab
.fab$l_xab
= (char *) &xabpro
;
4396 xabpro
= cc$rms_xabpro
;
4397 xabpro
.xab$l_aclbuf
= aclbuf
;
4398 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4399 /* Call $OPEN to fill in the fab & xabpro fields. */
4400 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4402 SYS$
CLOSE (&fab
, 0, 0);
4403 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4404 if (xabpro
.xab$w_acllen
> 0)
4406 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4407 /* If the acl buffer was too short, redo open with longer one.
4408 Wouldn't need to do this if there were some system imposed
4409 limit on the size of an ACL, but I can't find any such. */
4411 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4412 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4413 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4414 SYS$
CLOSE (&fab
, 0, 0);
4420 xabpro
.xab$l_aclbuf
= 0;
4425 fab
.fab$l_fna
= new;
4426 fab
.fab$b_fns
= strlen (new);
4430 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4431 fab
.fab$b_rat
= FAB$M_CR
;
4434 /* Set the file protections such that we will be able to manipulate
4435 this file. Once we are done writing and renaming it, we will set
4436 the protections back. */
4438 fab_final_pro
= xabpro
.xab$w_pro
;
4440 SYS$
SETDFPROT (0, &fab_final_pro
);
4441 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4443 /* Create the new file with either default attrs or attrs copied
4445 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4447 SYS$
CLOSE (&fab
, 0, 0);
4448 /* As this is a "replacement" for creat, return a file descriptor
4449 opened for writing. */
4450 return open (new, O_WRONLY
);
4455 #include <varargs.h>
4458 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4463 sys_creat (va_alist
)
4466 va_list list_incrementer
;
4469 int rfd
; /* related file descriptor */
4470 int fd
; /* Our new file descriptor */
4477 extern int vms_stmlf_recfm
;
4480 va_start (list_incrementer
);
4481 name
= va_arg (list_incrementer
, char *);
4482 mode
= va_arg (list_incrementer
, int);
4484 rfd
= va_arg (list_incrementer
, int);
4485 va_end (list_incrementer
);
4488 /* Use information from the related file descriptor to set record
4489 format of the newly created file. */
4490 fstat (rfd
, &st_buf
);
4491 switch (st_buf
.st_fab_rfm
)
4494 strcpy (rfm
, "rfm = fix");
4495 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4496 strcpy (rat
, "rat = ");
4497 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4499 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4500 strcat (rat
, "ftn");
4501 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4502 strcat (rat
, "prn");
4503 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4504 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4505 strcat (rat
, ", blk");
4507 strcat (rat
, "blk");
4508 return creat (name
, 0, rfm
, rat
, mrs
);
4511 strcpy (rfm
, "rfm = vfc");
4512 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4513 strcpy (rat
, "rat = ");
4514 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4516 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4517 strcat (rat
, "ftn");
4518 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4519 strcat (rat
, "prn");
4520 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4521 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4522 strcat (rat
, ", blk");
4524 strcat (rat
, "blk");
4525 return creat (name
, 0, rfm
, rat
, fsz
);
4528 strcpy (rfm
, "rfm = stm");
4532 strcpy (rfm
, "rfm = stmcr");
4536 strcpy (rfm
, "rfm = stmlf");
4540 strcpy (rfm
, "rfm = udf");
4544 strcpy (rfm
, "rfm = var");
4547 strcpy (rat
, "rat = ");
4548 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4550 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4551 strcat (rat
, "ftn");
4552 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4553 strcat (rat
, "prn");
4554 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4555 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4556 strcat (rat
, ", blk");
4558 strcat (rat
, "blk");
4562 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4563 strcpy (rat
, "rat=cr");
4565 /* Until the VAX C RTL fixes the many bugs with modes, always use
4566 mode 0 to get the user's default protection. */
4567 fd
= creat (name
, 0, rfm
, rat
);
4568 if (fd
< 0 && errno
== EEXIST
)
4570 if (unlink (name
) < 0)
4571 report_file_error ("delete", build_string (name
));
4572 fd
= creat (name
, 0, rfm
, rat
);
4578 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4580 sys_fwrite (ptr
, size
, num
, fp
)
4581 register char * ptr
;
4584 register int tot
= num
* size
;
4592 * The VMS C library routine creat actually creates a new version of an
4593 * existing file rather than truncating the old version. There are times
4594 * when this is not the desired behavior, for instance, when writing an
4595 * auto save file (you only want one version), or when you don't have
4596 * write permission in the directory containing the file (but the file
4597 * itself is writable). Hence this routine, which is equivalent to
4598 * "close (creat (fn, 0));" on Unix if fn already exists.
4604 struct FAB xfab
= cc$rms_fab
;
4605 struct RAB xrab
= cc$rms_rab
;
4608 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4609 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4610 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4611 xfab
.fab$l_fna
= fn
;
4612 xfab
.fab$b_fns
= strlen (fn
);
4613 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4615 xrab
.rab$l_fab
= &xfab
;
4617 /* This gibberish opens the file, positions to the first record, and
4618 deletes all records from there until the end of file. */
4619 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4621 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4622 (SYS$
FIND (&xrab
) & 01) == 01 &&
4623 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4634 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4635 SYSPRV or a readable SYSUAF.DAT. */
4641 * Routine to read the VMS User Authorization File and return
4642 * a specific user's record.
4645 static struct UAF retuaf
;
4648 get_uaf_name (uname
)
4655 uaf_fab
= cc$rms_fab
;
4656 uaf_rab
= cc$rms_rab
;
4657 /* initialize fab fields */
4658 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4659 uaf_fab
.fab$b_fns
= 21;
4660 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4661 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4662 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4663 /* initialize rab fields */
4664 uaf_rab
.rab$l_fab
= &uaf_fab
;
4665 /* open the User Authorization File */
4666 status
= SYS$
OPEN (&uaf_fab
);
4670 vaxc$errno
= status
;
4673 status
= SYS$
CONNECT (&uaf_rab
);
4677 vaxc$errno
= status
;
4680 /* read the requested record - index is in uname */
4681 uaf_rab
.rab$l_kbf
= uname
;
4682 uaf_rab
.rab$b_ksz
= strlen (uname
);
4683 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4684 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4685 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4686 status
= SYS$
GET (&uaf_rab
);
4690 vaxc$errno
= status
;
4693 /* close the User Authorization File */
4694 status
= SYS$
DISCONNECT (&uaf_rab
);
4698 vaxc$errno
= status
;
4701 status
= SYS$
CLOSE (&uaf_fab
);
4705 vaxc$errno
= status
;
4719 uaf_fab
= cc$rms_fab
;
4720 uaf_rab
= cc$rms_rab
;
4721 /* initialize fab fields */
4722 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4723 uaf_fab
.fab$b_fns
= 21;
4724 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4725 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4726 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4727 /* initialize rab fields */
4728 uaf_rab
.rab$l_fab
= &uaf_fab
;
4729 /* open the User Authorization File */
4730 status
= SYS$
OPEN (&uaf_fab
);
4734 vaxc$errno
= status
;
4737 status
= SYS$
CONNECT (&uaf_rab
);
4741 vaxc$errno
= status
;
4744 /* read the requested record - index is in uic */
4745 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4746 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4747 uaf_rab
.rab$b_ksz
= sizeof uic
;
4748 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4749 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4750 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4751 status
= SYS$
GET (&uaf_rab
);
4755 vaxc$errno
= status
;
4758 /* close the User Authorization File */
4759 status
= SYS$
DISCONNECT (&uaf_rab
);
4763 vaxc$errno
= status
;
4766 status
= SYS$
CLOSE (&uaf_fab
);
4770 vaxc$errno
= status
;
4776 static struct passwd retpw
;
4784 /* copy these out first because if the username is 32 chars, the next
4785 section will overwrite the first byte of the UIC */
4786 retpw
.pw_uid
= up
->uaf$w_mem
;
4787 retpw
.pw_gid
= up
->uaf$w_grp
;
4789 /* I suppose this is not the best style, to possibly overwrite one
4790 byte beyond the end of the field, but what the heck... */
4791 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4792 while (ptr
[-1] == ' ')
4795 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4797 /* the rest of these are counted ascii strings */
4798 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4799 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4800 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4801 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4802 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4803 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4804 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4805 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4809 #else /* not READ_SYSUAF */
4810 static struct passwd retpw
;
4811 #endif /* not READ_SYSUAF */
4822 unsigned char * full
;
4823 #endif /* READ_SYSUAF */
4828 if ('a' <= *ptr
&& *ptr
<= 'z')
4833 if (!(up
= get_uaf_name (name
)))
4835 return cnv_uaf_pw (up
);
4837 if (strcmp (name
, getenv ("USER")) == 0)
4839 retpw
.pw_uid
= getuid ();
4840 retpw
.pw_gid
= getgid ();
4841 strcpy (retpw
.pw_name
, name
);
4842 if (full
= egetenv ("FULLNAME"))
4843 strcpy (retpw
.pw_gecos
, full
);
4845 *retpw
.pw_gecos
= '\0';
4846 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4847 *retpw
.pw_shell
= '\0';
4852 #endif /* not READ_SYSUAF */
4862 if (!(up
= get_uaf_uic (uid
)))
4864 return cnv_uaf_pw (up
);
4866 if (uid
== sys_getuid ())
4867 return getpwnam (egetenv ("USER"));
4870 #endif /* not READ_SYSUAF */
4873 /* return total address space available to the current process. This is
4874 the sum of the current p0 size, p1 size and free page table entries
4880 unsigned long free_pages
;
4881 unsigned long frep0va
;
4882 unsigned long frep1va
;
4885 item_code
= JPI$_FREPTECNT
;
4886 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4889 vaxc$errno
= status
;
4894 item_code
= JPI$_FREP0VA
;
4895 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4898 vaxc$errno
= status
;
4901 item_code
= JPI$_FREP1VA
;
4902 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4905 vaxc$errno
= status
;
4909 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4913 define_logical_name (varname
, string
)
4917 struct dsc$descriptor_s strdsc
=
4918 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4919 struct dsc$descriptor_s envdsc
=
4920 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4921 struct dsc$descriptor_s lnmdsc
=
4922 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4924 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4928 delete_logical_name (varname
)
4931 struct dsc$descriptor_s envdsc
=
4932 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4933 struct dsc$descriptor_s lnmdsc
=
4934 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4936 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4954 error ("execvp system call not implemented");
4963 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4964 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4965 char from_esn
[NAM$C_MAXRSS
];
4966 char to_esn
[NAM$C_MAXRSS
];
4968 from_fab
.fab$l_fna
= from
;
4969 from_fab
.fab$b_fns
= strlen (from
);
4970 from_fab
.fab$l_nam
= &from_nam
;
4971 from_fab
.fab$l_fop
= FAB$M_NAM
;
4973 from_nam
.nam$l_esa
= from_esn
;
4974 from_nam
.nam$b_ess
= sizeof from_esn
;
4976 to_fab
.fab$l_fna
= to
;
4977 to_fab
.fab$b_fns
= strlen (to
);
4978 to_fab
.fab$l_nam
= &to_nam
;
4979 to_fab
.fab$l_fop
= FAB$M_NAM
;
4981 to_nam
.nam$l_esa
= to_esn
;
4982 to_nam
.nam$b_ess
= sizeof to_esn
;
4984 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4990 if (status
== RMS$_DEV
)
4994 vaxc$errno
= status
;
4999 /* This function renames a file like `rename', but it strips
5000 the version number from the "to" filename, such that the "to" file is
5001 will always be a new version. It also sets the file protection once it is
5002 finished. The protection that we will use is stored in fab_final_pro,
5003 and was set when we did a creat_copy_attrs to create the file that we
5006 We could use the chmod function, but Eunichs uses 3 bits per user category
5007 to describe the protection, and VMS uses 4 (write and delete are separate
5008 bits). To maintain portability, the VMS implementation of `chmod' wires
5009 the W and D bits together. */
5012 static struct fibdef fib
; /* We need this initialized to zero */
5013 char vms_file_written
[NAM$C_MAXRSS
];
5016 rename_sans_version (from
,to
)
5023 struct FAB to_fab
= cc$rms_fab
;
5024 struct NAM to_nam
= cc$rms_nam
;
5025 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
5026 struct dsc$descriptor fib_attr
[2]
5027 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
5028 char to_esn
[NAM$C_MAXRSS
];
5030 $
DESCRIPTOR (disk
,to_esn
);
5032 to_fab
.fab$l_fna
= to
;
5033 to_fab
.fab$b_fns
= strlen (to
);
5034 to_fab
.fab$l_nam
= &to_nam
;
5035 to_fab
.fab$l_fop
= FAB$M_NAM
;
5037 to_nam
.nam$l_esa
= to_esn
;
5038 to_nam
.nam$b_ess
= sizeof to_esn
;
5040 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
5042 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
5043 *(to_nam
.nam$l_ver
) = '\0';
5045 stat
= rename (from
, to_esn
);
5049 strcpy (vms_file_written
, to_esn
);
5051 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
5052 to_fab
.fab$b_fns
= strlen (vms_file_written
);
5054 /* Now set the file protection to the correct value */
5055 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
5057 /* Copy these fields into the fib */
5058 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
5059 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
5060 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
5062 SYS$
CLOSE (&to_fab
, 0, 0);
5064 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
5067 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
5068 0, 0, 0, &fib_attr
, 0);
5071 stat
= SYS$
DASSGN (chan
);
5074 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
5085 unsigned short fid
[3];
5086 char esa
[NAM$C_MAXRSS
];
5089 fab
.fab$l_fop
= FAB$M_OFP
;
5090 fab
.fab$l_fna
= file
;
5091 fab
.fab$b_fns
= strlen (file
);
5092 fab
.fab$l_nam
= &nam
;
5095 nam
.nam$l_esa
= esa
;
5096 nam
.nam$b_ess
= NAM$C_MAXRSS
;
5098 status
= SYS$
PARSE (&fab
);
5099 if ((status
& 1) == 0)
5102 vaxc$errno
= status
;
5105 status
= SYS$
SEARCH (&fab
);
5106 if ((status
& 1) == 0)
5109 vaxc$errno
= status
;
5113 fid
[0] = nam
.nam$w_fid
[0];
5114 fid
[1] = nam
.nam$w_fid
[1];
5115 fid
[2] = nam
.nam$w_fid
[2];
5117 fab
.fab$l_fna
= new;
5118 fab
.fab$b_fns
= strlen (new);
5120 status
= SYS$
PARSE (&fab
);
5121 if ((status
& 1) == 0)
5124 vaxc$errno
= status
;
5128 nam
.nam$w_fid
[0] = fid
[0];
5129 nam
.nam$w_fid
[1] = fid
[1];
5130 nam
.nam$w_fid
[2] = fid
[2];
5132 nam
.nam$l_esa
= nam
.nam$l_name
;
5133 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
5135 status
= SYS$
ENTER (&fab
);
5136 if ((status
& 1) == 0)
5139 vaxc$errno
= status
;
5150 printf ("%s not yet implemented\r\n", badfunc
);
5151 reset_all_sys_modes ();
5158 /* Arrange to return a range centered on zero. */
5159 return rand () - (1 << 30);
5171 /* Called from init_sys_modes. */
5173 hft_init (struct tty_display_info
*tty_out
)
5177 /* If we're not on an HFT we shouldn't do any of this. We determine
5178 if we are on an HFT by trying to get an HFT error code. If this
5179 call fails, we're not on an HFT. */
5181 if (ioctl (0, HFQERROR
, &junk
) < 0)
5183 #else /* not IBMR2AIX */
5184 if (ioctl (0, HFQEIO
, 0) < 0)
5186 #endif /* not IBMR2AIX */
5188 /* On AIX the default hft keyboard mapping uses backspace rather than delete
5189 as the rubout key's ASCII code. Here this is changed. The bug is that
5190 there's no way to determine the old mapping, so in reset_sys_modes
5191 we need to assume that the normal map had been present. Of course, this
5192 code also doesn't help if on a terminal emulator which doesn't understand
5196 struct hfkeymap keymap
;
5198 buf
.hf_bufp
= (char *)&keymap
;
5199 buf
.hf_buflen
= sizeof (keymap
);
5200 keymap
.hf_nkeys
= 2;
5201 keymap
.hfkey
[0].hf_kpos
= 15;
5202 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5204 keymap
.hfkey
[0].hf_keyidh
= '<';
5205 #else /* not IBMR2AIX */
5206 keymap
.hfkey
[0].hf_page
= '<';
5207 #endif /* not IBMR2AIX */
5208 keymap
.hfkey
[0].hf_char
= 127;
5209 keymap
.hfkey
[1].hf_kpos
= 15;
5210 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5212 keymap
.hfkey
[1].hf_keyidh
= '<';
5213 #else /* not IBMR2AIX */
5214 keymap
.hfkey
[1].hf_page
= '<';
5215 #endif /* not IBMR2AIX */
5216 keymap
.hfkey
[1].hf_char
= 127;
5217 hftctl (0, HFSKBD
, &buf
);
5221 /* Reset the rubout key to backspace. */
5224 hft_reset (struct tty_display_info
*tty_out
)
5227 struct hfkeymap keymap
;
5231 if (ioctl (0, HFQERROR
, &junk
) < 0)
5233 #else /* not IBMR2AIX */
5234 if (ioctl (0, HFQEIO
, 0) < 0)
5236 #endif /* not IBMR2AIX */
5238 buf
.hf_bufp
= (char *)&keymap
;
5239 buf
.hf_buflen
= sizeof (keymap
);
5240 keymap
.hf_nkeys
= 2;
5241 keymap
.hfkey
[0].hf_kpos
= 15;
5242 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5244 keymap
.hfkey
[0].hf_keyidh
= '<';
5245 #else /* not IBMR2AIX */
5246 keymap
.hfkey
[0].hf_page
= '<';
5247 #endif /* not IBMR2AIX */
5248 keymap
.hfkey
[0].hf_char
= 8;
5249 keymap
.hfkey
[1].hf_kpos
= 15;
5250 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5252 keymap
.hfkey
[1].hf_keyidh
= '<';
5253 #else /* not IBMR2AIX */
5254 keymap
.hfkey
[1].hf_page
= '<';
5255 #endif /* not IBMR2AIX */
5256 keymap
.hfkey
[1].hf_char
= 8;
5257 hftctl (0, HFSKBD
, &buf
);
5264 /* These are included on Sunos 4.1 when we do not use shared libraries.
5265 X11 libraries may refer to these functions but (we hope) do not
5266 actually call them. */
5286 #endif /* USE_DL_STUBS */
5295 register int length
;
5299 long max_str
= 65535;
5301 while (length
> max_str
) {
5302 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5307 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5309 while (length
-- > 0)
5311 #endif /* not VMS */
5314 #endif /* no bzero */
5315 #endif /* BSTRING */
5317 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5320 /* Saying `void' requires a declaration, above, where bcopy is used
5321 and that declaration causes pain for systems where bcopy is a macro. */
5322 bcopy (b1
, b2
, length
)
5325 register int length
;
5328 long max_str
= 65535;
5330 while (length
> max_str
) {
5331 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5337 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5339 while (length
-- > 0)
5341 #endif /* not VMS */
5343 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5348 bcmp (b1
, b2
, length
) /* This could be a macro! */
5351 register int length
;
5354 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5355 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5357 return STR$
COMPARE (&src1
, &src2
);
5359 while (length
-- > 0)
5364 #endif /* not VMS */
5366 #endif /* no bcmp */
5367 #endif /* not BSTRING */
5369 #ifndef HAVE_STRSIGNAL
5376 if (0 <= code
&& code
< NSIG
)
5379 signame
= sys_errlist
[code
];
5381 /* Cast to suppress warning if the table has const char *. */
5382 signame
= (char *) sys_siglist
[code
];
5388 #endif /* HAVE_STRSIGNAL */
5390 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
5391 (do not change this comment) */