1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 86, 87, 88, 93, 94, 95 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
27 #include "blockinput.h"
30 #define min(x,y) ((x) > (y) ? (y) : (x))
32 /* In this file, open, read and write refer to the system calls,
33 not our sugared interfaces sys_open, sys_read and sys_write.
34 Contrariwise, for systems where we use the system calls directly,
35 define sys_read, etc. here as aliases for them. */
38 #define sys_write write
39 #endif /* `read' is not a macro */
49 #endif /* not WINDOWSNT */
52 #define sys_close close
59 #else /* `open' is a macro */
61 #endif /* `open' is a macro */
63 /* Does anyone other than VMS need this? */
65 #define sys_fwrite fwrite
75 #include <sys/types.h>
79 /* Get _POSIX_VDISABLE, if it is available. */
84 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
88 #include <sys/param.h>
105 #include <sys/file.h>
113 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
117 #ifdef BSD /* this is done this way to avoid defined (BSD) || defined (USG)
118 because the vms compiler doesn't grok `defined' */
126 #endif /* not 4.1 bsd */
129 #include <sys/ioctl.h>
134 #ifdef BROKEN_TIOCGWINSZ
140 #include <sys/utsname.h>
142 #ifndef MEMORY_IN_STRING_H
145 #if defined (TIOCGWINSZ) || defined (ISC4_0)
147 #include <sys/sioctl.h>
150 #include <sys/stream.h>
151 #include <sys/ptem.h>
153 #endif /* TIOCGWINSZ or ISC4_0 */
156 extern int quit_char
;
160 #include "termhooks.h"
161 #include "termchar.h"
162 #include "termopts.h"
163 #include "dispextern.h"
168 /* In process.h which conflicts with the local copy. */
170 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
171 int _CRTAPI1
_getpid (void);
174 #ifdef NONSYSTEM_DIR_LIBRARY
176 #endif /* NONSYSTEM_DIR_LIBRARY */
178 #include "syssignal.h"
185 #ifndef HAVE_STRUCT_UTIMBUF
186 /* We want to use utime rather than utimes, but we couldn't find the
187 structure declaration. We'll use the traditional one. */
195 #ifndef VFORK_RETURN_TYPE
196 #define VFORK_RETURN_TYPE int
199 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
205 #define LNOFLSH 0100000
208 static int baud_convert
[] =
213 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
214 1800, 2400, 4800, 9600, 19200, 38400
220 /* The file descriptor for Emacs's input terminal.
221 Under Unix, this is normally zero except when using X;
222 under VMS, we place the input channel number here. */
225 /* Specify a different file descriptor for further input operations. */
234 /* Discard pending input on descriptor input_fd. */
239 struct emacs_tty buf
;
244 /* Discarding input is not safe when the input could contain
245 replies from the X server. So don't do it. */
246 if (read_socket_hook
)
251 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
252 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
258 ioctl (input_fd
, TIOCFLUSH
, &zero
);
260 #else /* not Apollo */
261 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
262 while (dos_keyread () != -1)
264 #else /* not MSDOS */
265 EMACS_GET_TTY (input_fd
, &buf
);
266 EMACS_SET_TTY (input_fd
, &buf
, 0);
267 #endif /* not MSDOS */
268 #endif /* not Apollo */
270 #endif /* not WINDOWSNT */
275 /* Arrange for character C to be read as the next input from
281 if (read_socket_hook
)
284 /* Should perhaps error if in batch mode */
286 ioctl (input_fd
, TIOCSTI
, &c
);
287 #else /* no TIOCSTI */
288 error ("Cannot stuff terminal input characters in this version of Unix");
289 #endif /* no TIOCSTI */
302 #else /* not DOS_NT */
306 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
307 &sg
.class, 12, 0, 0, 0, 0 );
308 ospeed
= sg
.xmit_baud
;
314 tcgetattr (input_fd
, &sg
);
315 ospeed
= cfgetospeed (&sg
);
316 #if defined (USE_GETOBAUD) && defined (getobaud)
317 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
319 ospeed
= getobaud (sg
.c_cflag
);
321 #else /* neither VMS nor TERMIOS */
327 tcgetattr (input_fd
, &sg
);
329 ioctl (input_fd
, TCGETA
, &sg
);
331 ospeed
= sg
.c_cflag
& CBAUD
;
332 #else /* neither VMS nor TERMIOS nor TERMIO */
335 sg
.sg_ospeed
= B9600
;
336 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
338 ospeed
= sg
.sg_ospeed
;
339 #endif /* not HAVE_TERMIO */
340 #endif /* not HAVE_TERMIOS */
342 #endif /* not DOS_NT */
345 baud_rate
= (ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
346 ? baud_convert
[ospeed
] : 9600);
352 set_exclusive_use (fd
)
356 ioctl (fd
, FIOCLEX
, 0);
358 /* Ok to do nothing if this feature does not exist */
363 wait_without_blocking ()
366 wait3 (0, WNOHANG
| WUNTRACED
, 0);
368 croak ("wait_without_blocking");
370 synch_process_alive
= 0;
373 #endif /* not subprocesses */
375 int wait_debugging
; /* Set nonzero to make following function work under dbx
376 (at least for bsd). */
379 wait_for_termination_signal ()
382 /* Wait for subprocess with process id `pid' to terminate and
383 make sure it will get eliminated (not remain forever as a zombie) */
385 wait_for_termination (pid
)
394 status
= SYS$
FORCEX (&pid
, 0, 0);
397 #if defined (BSD) || (defined (HPUX) && !defined (HPUX_5))
398 /* Note that kill returns -1 even if the process is just a zombie now.
399 But inevitably a SIGCHLD interrupt should be generated
400 and child_sig will do wait3 and make the process go away. */
401 /* There is some indication that there is a bug involved with
402 termination of subprocesses, perhaps involving a kernel bug too,
403 but no idea what it is. Just as a hunch we signal SIGCHLD to see
404 if that causes the problem to go away or get worse. */
405 sigsetmask (sigmask (SIGCHLD
));
406 if (0 > kill (pid
, 0))
408 sigsetmask (SIGEMPTYMASK
);
409 kill (getpid (), SIGCHLD
);
415 sigpause (SIGEMPTYMASK
);
416 #else /* not BSD, and not HPUX version >= 6 */
417 #if defined (UNIPLUS)
418 if (0 > kill (pid
, 0))
421 #else /* neither BSD nor UNIPLUS: random sysV */
422 #ifdef POSIX_SIGNALS /* would this work for LINUX as well? */
423 sigblock (sigmask (SIGCHLD
));
424 if (0 > kill (pid
, 0))
426 sigunblock (sigmask (SIGCHLD
));
429 sigpause (SIGEMPTYMASK
);
430 #else /* not POSIX_SIGNALS */
431 #ifdef HAVE_SYSV_SIGPAUSE
433 if (0 > kill (pid
, 0))
439 #else /* not HAVE_SYSV_SIGPAUSE */
443 #else /* not WINDOWSNT */
444 if (0 > kill (pid
, 0))
446 /* Using sleep instead of pause avoids timing error.
447 If the inferior dies just before the sleep,
448 we lose just one second. */
450 #endif /* not WINDOWSNT */
451 #endif /* not HAVE_SYSV_SIGPAUSE */
452 #endif /* not POSIX_SIGNALS */
453 #endif /* not UNIPLUS */
454 #endif /* not BSD, and not HPUX version >= 6 */
456 #else /* not subprocesses */
458 if (kill (pid
, 0) < 0)
464 if (status
== pid
|| status
== -1)
467 #endif /* not subprocesses */
474 * flush any pending output
475 * (may flush input as well; it does not matter the way we use it)
478 flush_pending_output (channel
)
482 /* If we try this, we get hit with SIGTTIN, because
483 the child's tty belongs to the child's pgrp. */
486 ioctl (channel
, TCFLSH
, 1);
490 /* 3rd arg should be ignored
491 but some 4.2 kernels actually want the address of an int
492 and nonzero means something different. */
493 ioctl (channel
, TIOCFLUSH
, &zero
);
500 /* Set up the terminal at the other end of a pseudo-terminal that
501 we will be controlling an inferior through.
502 It should not echo or do line-editing, since that is done
503 in Emacs. No padding needed for insertion into an Emacs buffer. */
505 child_setup_tty (out
)
511 EMACS_GET_TTY (out
, &s
);
513 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
514 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
515 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
517 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
518 /* No output delays */
520 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
521 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
523 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
526 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
528 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
530 /* Said to be unnecessary: */
531 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
532 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
535 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
536 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
537 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
538 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
541 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
545 /* AIX enhanced edit loses NULs, so disable it */
548 s
.main
.c_iflag
&= ~ASCEDIT
;
550 /* Also, PTY overloads NUL and BREAK.
551 don't ignore break, but don't signal either, so it looks like NUL. */
552 s
.main
.c_iflag
&= ~IGNBRK
;
553 s
.main
.c_iflag
&= ~BRKINT
;
554 /* QUIT and INTR work better as signals, so disable character forms */
555 s
.main
.c_cc
[VINTR
] = 0377;
556 #ifdef SIGNALS_VIA_CHARACTERS
557 /* the QUIT and INTR character are used in process_send_signal
558 so set them here to something useful. */
559 if (s
.main
.c_cc
[VQUIT
] == 0377)
560 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
561 if (s
.main
.c_cc
[VINTR
] == 0377)
562 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
563 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
564 /* QUIT and INTR work better as signals, so disable character forms */
565 s
.main
.c_cc
[VQUIT
] = 0377;
566 s
.main
.c_cc
[VINTR
] = 0377;
567 s
.main
.c_lflag
&= ~ISIG
;
568 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
569 s
.main
.c_cc
[VEOL
] = 0377;
570 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
573 #else /* not HAVE_TERMIO */
575 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
577 s
.main
.sg_flags
|= LPASS8
;
578 s
.main
.sg_erase
= 0377;
579 s
.main
.sg_kill
= 0377;
580 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
582 #endif /* not HAVE_TERMIO */
584 EMACS_SET_TTY (out
, &s
, 0);
593 ioctl (out
, FIOASYNC
, &zero
);
596 #endif /* not DOS_NT */
600 #endif /* subprocesses */
602 /* Record a signal code and the handler for it. */
606 SIGTYPE (*handler
) ();
609 /* Suspend the Emacs process; give terminal to its superior. */
614 /* "Foster" parentage allows emacs to return to a subprocess that attached
615 to the current emacs as a cheaper than starting a whole new process. This
616 is set up by KEPTEDITOR.COM. */
617 unsigned long parent_id
, foster_parent_id
;
620 fpid_string
= getenv ("EMACS_PARENT_PID");
621 if (fpid_string
!= NULL
)
623 sscanf (fpid_string
, "%x", &foster_parent_id
);
624 if (foster_parent_id
!= 0)
625 parent_id
= foster_parent_id
;
627 parent_id
= getppid ();
630 parent_id
= getppid ();
632 xfree (fpid_string
); /* On VMS, this was malloc'd */
634 if (parent_id
&& parent_id
!= 0xffffffff)
636 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
637 int status
= LIB$
ATTACH (&parent_id
) & 1;
638 signal (SIGINT
, oldsig
);
647 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
648 d_prompt
.a
= "Emacs: "; /* Just a reminder */
649 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
654 #if defined(SIGTSTP) && !defined(MSDOS)
657 int pgrp
= EMACS_GETPGRP (0);
658 EMACS_KILLPG (pgrp
, SIGTSTP
);
661 #else /* No SIGTSTP */
662 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
663 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
664 kill (getpid (), SIGQUIT
);
666 #else /* No SIGTSTP or USG_JOBCTRL */
668 /* On a system where suspending is not implemented,
669 instead fork a subshell and let it talk directly to the terminal
673 #endif /* no USG_JOBCTRL */
674 #endif /* no SIGTSTP */
678 /* Fork a subshell. */
683 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
685 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
688 struct save_signal saved_handlers
[5];
690 unsigned char *str
= 0;
693 saved_handlers
[0].code
= SIGINT
;
694 saved_handlers
[1].code
= SIGQUIT
;
695 saved_handlers
[2].code
= SIGTERM
;
697 saved_handlers
[3].code
= SIGIO
;
698 saved_handlers
[4].code
= 0;
700 saved_handlers
[3].code
= 0;
703 /* Mentioning current_buffer->buffer would mean including buffer.h,
704 which somehow wedges the hp compiler. So instead... */
706 dir
= intern ("default-directory");
707 if (NILP (Fboundp (dir
)))
709 dir
= Fsymbol_value (dir
);
713 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
714 str
= (unsigned char *) alloca (XSTRING (dir
)->size
+ 2);
715 len
= XSTRING (dir
)->size
;
716 bcopy (XSTRING (dir
)->data
, str
, len
);
717 if (str
[len
- 1] != '/') str
[len
++] = '/';
723 #else /* not WINDOWSNT */
729 error ("Can't spawn subshell");
733 #endif /* not WINDOWSNT */
737 #ifdef MSDOS /* MW, Aug 1993 */
740 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
743 sh
= (char *) egetenv ("SHELL");
747 /* Use our buffer's default directory for the subshell. */
752 close_process_descs (); /* Close Emacs's pipes/ptys */
755 #ifdef SET_EMACS_PRIORITY
757 extern int emacs_priority
;
759 if (emacs_priority
< 0)
760 nice (-emacs_priority
);
764 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
767 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
769 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
771 #else /* not MSDOS */
773 /* Waits for process completion */
774 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
776 write (1, "Can't execute subshell", 22);
779 #else /* not WINDOWSNT */
781 write (1, "Can't execute subshell", 22);
783 #endif /* not WINDOWSNT */
784 #endif /* not MSDOS */
787 save_signal_handlers (saved_handlers
);
788 synch_process_alive
= 1;
790 wait_for_termination (pid
);
792 restore_signal_handlers (saved_handlers
);
796 save_signal_handlers (saved_handlers
)
797 struct save_signal
*saved_handlers
;
799 while (saved_handlers
->code
)
801 saved_handlers
->handler
802 = (SIGTYPE (*) ()) signal (saved_handlers
->code
, SIG_IGN
);
807 restore_signal_handlers (saved_handlers
)
808 struct save_signal
*saved_handlers
;
810 while (saved_handlers
->code
)
812 signal (saved_handlers
->code
, saved_handlers
->handler
);
825 old_fcntl_flags
= fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
826 fcntl (fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
828 interrupts_deferred
= 0;
836 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
840 if (read_socket_hook
)
844 sigunblock (sigmask (SIGWINCH
));
846 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
848 interrupts_deferred
= 0;
853 if (read_socket_hook
)
857 sigblock (sigmask (SIGWINCH
));
859 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
860 interrupts_deferred
= 1;
863 #else /* no FASYNC */
864 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
870 if (read_socket_hook
)
873 ioctl (input_fd
, FIOASYNC
, &on
);
874 interrupts_deferred
= 0;
881 if (read_socket_hook
)
884 ioctl (input_fd
, FIOASYNC
, &off
);
885 interrupts_deferred
= 1;
888 #else /* not FASYNC, not STRIDE */
899 if (read_socket_hook
)
903 sigaddset(&st
, SIGIO
);
904 ioctl (input_fd
, FIOASYNC
, &on
);
905 interrupts_deferred
= 0;
906 sigprocmask(SIG_UNBLOCK
, &st
, (sigset_t
*)0);
913 if (read_socket_hook
)
916 ioctl (input_fd
, FIOASYNC
, &off
);
917 interrupts_deferred
= 1;
924 if (read_socket_hook
)
927 croak ("request_sigio");
932 if (read_socket_hook
)
935 croak ("unrequest_sigio");
943 /* Saving and restoring the process group of Emacs's terminal. */
947 /* The process group of which Emacs was a member when it initially
950 If Emacs was in its own process group (i.e. inherited_pgroup ==
951 getpid ()), then we know we're running under a shell with job
952 control (Emacs would never be run as part of a pipeline).
955 If Emacs was not in its own process group, then we know we're
956 running under a shell (or a caller) that doesn't know how to
957 separate itself from Emacs (like sh). Emacs must be in its own
958 process group in order to receive SIGIO correctly. In this
959 situation, we put ourselves in our own pgroup, forcibly set the
960 tty's pgroup to our pgroup, and make sure to restore and reinstate
961 the tty's pgroup just like any other terminal setting. If
962 inherited_group was not the tty's pgroup, then we'll get a
963 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
964 it goes foreground in the future, which is what should happen. */
965 int inherited_pgroup
;
967 /* Split off the foreground process group to Emacs alone.
968 When we are in the foreground, but not started in our own process
969 group, redirect the TTY to point to our own process group. We need
970 to be in our own process group to receive SIGIO properly. */
971 narrow_foreground_group ()
975 setpgrp (0, inherited_pgroup
);
976 if (inherited_pgroup
!= me
)
977 EMACS_SET_TTY_PGRP (input_fd
, &me
);
981 /* Set the tty to our original foreground group. */
982 widen_foreground_group ()
984 if (inherited_pgroup
!= getpid ())
985 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
986 setpgrp (0, inherited_pgroup
);
989 #endif /* BSD_PGRPS */
991 /* Getting and setting emacs_tty structures. */
993 /* Set *TC to the parameters associated with the terminal FD.
994 Return zero if all's well, or -1 if we ran into an error we
995 couldn't deal with. */
997 emacs_get_tty (fd
, settings
)
999 struct emacs_tty
*settings
;
1001 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1003 /* We have those nifty POSIX tcmumbleattr functions. */
1004 if (tcgetattr (fd
, &settings
->main
) < 0)
1009 /* The SYSV-style interface? */
1010 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1015 /* Vehemently Monstrous System? :-) */
1016 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1017 &settings
->main
.class, 12, 0, 0, 0, 0)
1023 /* I give up - I hope you have the BSD ioctls. */
1024 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1026 #endif /* not DOS_NT */
1031 /* Suivant - Do we have to get struct ltchars data? */
1033 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1037 /* How about a struct tchars and a wordful of lmode bits? */
1039 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1040 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1044 /* We have survived the tempest. */
1049 /* Set the parameters of the tty on FD according to the contents of
1050 *SETTINGS. If FLUSHP is non-zero, we discard input.
1051 Return 0 if all went well, and -1 if anything failed. */
1054 emacs_set_tty (fd
, settings
, flushp
)
1056 struct emacs_tty
*settings
;
1059 /* Set the primary parameters - baud rate, character size, etcetera. */
1062 /* We have those nifty POSIX tcmumbleattr functions.
1063 William J. Smith <wjs@wiis.wang.com> writes:
1064 "POSIX 1003.1 defines tcsetattr() to return success if it was
1065 able to perform any of the requested actions, even if some
1066 of the requested actions could not be performed.
1067 We must read settings back to ensure tty setup properly.
1068 AIX requires this to keep tty from hanging occasionally." */
1069 /* This make sure that we don't loop indefinitely in here. */
1070 for (i
= 0 ; i
< 10 ; i
++)
1071 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1082 /* Get the current settings, and see if they're what we asked for. */
1083 tcgetattr (fd
, &new);
1084 /* We cannot use memcmp on the whole structure here because under
1085 * aix386 the termios structure has some reserved field that may
1088 if ( new.c_iflag
== settings
->main
.c_iflag
1089 && new.c_oflag
== settings
->main
.c_oflag
1090 && new.c_cflag
== settings
->main
.c_cflag
1091 && new.c_lflag
== settings
->main
.c_lflag
1092 && memcmp(new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1100 /* The SYSV-style interface? */
1101 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1106 /* Vehemently Monstrous System? :-) */
1107 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1108 &settings
->main
.class, 12, 0, 0, 0, 0)
1114 /* I give up - I hope you have the BSD ioctls. */
1115 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1117 #endif /* not DOS_NT */
1123 /* Suivant - Do we have to get struct ltchars data? */
1125 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1129 /* How about a struct tchars and a wordful of lmode bits? */
1131 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1132 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1136 /* We have survived the tempest. */
1141 /* The initial tty mode bits */
1142 struct emacs_tty old_tty
;
1144 /* 1 if we have been through init_sys_modes. */
1147 /* 1 if outer tty status has been recorded. */
1151 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1156 #ifndef F_SETOWN_BUG
1158 int old_fcntl_owner
;
1159 #endif /* F_SETOWN */
1160 #endif /* F_SETOWN_BUG */
1162 /* This may also be defined in stdio,
1163 but if so, this does no harm,
1164 and using the same name avoids wasting the other one's space. */
1166 #if defined (USG) || defined (DGUX)
1167 unsigned char _sobuf
[BUFSIZ
+8];
1169 char _sobuf
[BUFSIZ
];
1173 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1176 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1181 struct emacs_tty tty
;
1185 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1186 extern int (*interrupt_signal
) ();
1195 input_ef
= get_kbd_event_flag ();
1196 /* LIB$GET_EF (&input_ef); */
1197 SYS$
CLREF (input_ef
);
1198 waiting_for_ast
= 0;
1200 timer_ef
= get_timer_event_flag ();
1201 /* LIB$GET_EF (&timer_ef); */
1202 SYS$
CLREF (timer_ef
);
1206 LIB$
GET_EF (&process_ef
);
1207 SYS$
CLREF (process_ef
);
1209 if (input_ef
/ 32 != process_ef
/ 32)
1210 croak ("Input and process event flags in different clusters.");
1212 if (input_ef
/ 32 != timer_ef
/ 32)
1213 croak ("Input and timer event flags in different clusters.");
1215 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1216 ((unsigned) 1 << (process_ef
% 32));
1218 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1219 ((unsigned) 1 << (timer_ef
% 32));
1221 sys_access_reinit ();
1223 #endif /* not VMS */
1226 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1227 narrow_foreground_group ();
1230 #ifdef HAVE_WINDOW_SYSTEM
1231 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1232 needs the initialization code below. */
1233 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1236 EMACS_GET_TTY (input_fd
, &old_tty
);
1242 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1244 /* This allows meta to be sent on 8th bit. */
1245 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1247 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1248 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1250 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1252 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1253 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1255 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1257 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1260 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1262 tty
.main
.c_iflag
&= ~IXANY
;
1266 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1267 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1269 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1273 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1274 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1277 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1278 /* Set up C-g for both SIGQUIT and SIGINT.
1279 We don't know which we will get, but we handle both alike
1280 so which one it really gives us does not matter. */
1281 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1282 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1283 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1285 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1288 #if defined (mips) || defined (HAVE_TCATTR)
1290 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1293 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1294 #endif /* V_DSUSP */
1295 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1296 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1299 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1302 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1303 #endif /* VREPRINT */
1305 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1306 #endif /* VWERASE */
1308 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1309 #endif /* VDISCARD */
1311 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1314 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1316 #endif /* mips or HAVE_TCATTR */
1317 #ifdef SET_LINE_DISCIPLINE
1318 /* Need to explicitly request TERMIODISC line discipline or
1319 Ultrix's termios does not work correctly. */
1320 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1324 /* AIX enhanced edit loses NULs, so disable it. */
1325 tty
.main
.c_line
= 0;
1326 tty
.main
.c_iflag
&= ~ASCEDIT
;
1328 tty
.main
.c_cc
[VSTRT
] = 255;
1329 tty
.main
.c_cc
[VSTOP
] = 255;
1330 tty
.main
.c_cc
[VSUSP
] = 255;
1331 tty
.main
.c_cc
[VDSUSP
] = 255;
1332 #endif /* IBMR2AIX */
1333 /* Also, PTY overloads NUL and BREAK.
1334 don't ignore break, but don't signal either, so it looks like NUL.
1335 This really serves a purpose only if running in an XTERM window
1336 or via TELNET or the like, but does no harm elsewhere. */
1337 tty
.main
.c_iflag
&= ~IGNBRK
;
1338 tty
.main
.c_iflag
&= ~BRKINT
;
1340 #else /* if not HAVE_TERMIO */
1342 tty
.main
.tt_char
|= TT$M_NOECHO
;
1344 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1346 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1348 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1349 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1350 #else /* not VMS (BSD, that is) */
1352 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1354 tty
.main
.sg_flags
|= ANYP
;
1355 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1356 #endif /* not DOS_NT */
1357 #endif /* not VMS (BSD, that is) */
1358 #endif /* not HAVE_TERMIO */
1360 /* If going to use CBREAK mode, we must request C-g to interrupt
1361 and turn off start and stop chars, etc. If not going to use
1362 CBREAK mode, do this anyway so as to turn off local flow
1363 control for user coming over network on 4.2; in this case,
1364 only t_stopc and t_startc really matter. */
1367 /* Note: if not using CBREAK mode, it makes no difference how we
1369 tty
.tchars
= new_tchars
;
1370 tty
.tchars
.t_intrc
= quit_char
;
1373 tty
.tchars
.t_startc
= '\021';
1374 tty
.tchars
.t_stopc
= '\023';
1377 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1379 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1380 anything, and leaving it in breaks the meta key. Go figure. */
1381 tty
.lmode
&= ~LLITOUT
;
1388 #endif /* HAVE_TCHARS */
1389 #endif /* not HAVE_TERMIO */
1392 tty
.ltchars
= new_ltchars
;
1393 #endif /* HAVE_LTCHARS */
1394 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1396 internal_terminal_init ();
1400 EMACS_SET_TTY (input_fd
, &tty
, 0);
1402 /* This code added to insure that, if flow-control is not to be used,
1403 we have an unlocked terminal at the start. */
1406 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1410 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1414 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1416 if (!flow_control
) tcflow (input_fd
, TCOON
);
1424 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1425 to be only LF. This is the way that is done. */
1428 if (ioctl (1, HFTGETID
, &tty
) != -1)
1429 write (1, "\033[20l", 5);
1435 /* Appears to do nothing when in PASTHRU mode.
1436 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1437 interrupt_signal, oob_chars, 0, 0, 0, 0);
1439 queue_kbd_input (0);
1444 #ifndef F_SETOWN_BUG
1445 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1447 && ! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1449 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1450 fcntl (input_fd
, F_SETOWN
, getpid ());
1451 init_sigio (input_fd
);
1453 #endif /* F_GETOWN */
1454 #endif /* F_SETOWN_BUG */
1455 #endif /* F_SETFL */
1458 if (interrupt_input
)
1459 init_sigio (input_fd
);
1462 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1466 /* This symbol is defined on recent USG systems.
1467 Someone says without this call USG won't really buffer the file
1468 even with a call to setbuf. */
1469 setvbuf (stdout
, _sobuf
, _IOFBF
, sizeof _sobuf
);
1471 setbuf (stdout
, _sobuf
);
1473 #ifdef HAVE_WINDOW_SYSTEM
1474 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1475 needs the initialization code below. */
1476 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1478 set_terminal_modes ();
1480 if (term_initted
&& no_redraw_on_reenter
)
1482 if (display_completed
)
1483 direct_output_forward_char (0);
1489 if (FRAMEP (Vterminal_frame
))
1490 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1497 /* Return nonzero if safe to use tabs in output.
1498 At the time this is called, init_sys_modes has not been done yet. */
1502 struct emacs_tty tty
;
1504 EMACS_GET_TTY (input_fd
, &tty
);
1505 return EMACS_TTY_TABS_OK (&tty
);
1508 /* Get terminal size from system.
1509 Store number of lines into *HEIGHTP and width into *WIDTHP.
1510 We store 0 if there's no valid information. */
1512 get_frame_size (widthp
, heightp
)
1513 int *widthp
, *heightp
;
1519 struct winsize size
;
1521 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1522 *widthp
= *heightp
= 0;
1525 *widthp
= size
.ws_col
;
1526 *heightp
= size
.ws_row
;
1532 /* SunOS - style. */
1533 struct ttysize size
;
1535 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1536 *widthp
= *heightp
= 0;
1539 *widthp
= size
.ts_cols
;
1540 *heightp
= size
.ts_lines
;
1546 struct sensemode tty
;
1548 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1549 &tty
.class, 12, 0, 0, 0, 0);
1550 *widthp
= tty
.scr_wid
;
1551 *heightp
= tty
.scr_len
;
1555 *widthp
= ScreenCols ();
1556 *heightp
= ScreenRows ();
1557 #else /* system doesn't know size */
1562 #endif /* not VMS */
1563 #endif /* not SunOS-style */
1564 #endif /* not BSD-style */
1567 /* Set the logical window size associated with descriptor FD
1568 to HEIGHT and WIDTH. This is used mainly with ptys. */
1571 set_window_size (fd
, height
, width
)
1572 int fd
, height
, width
;
1577 struct winsize size
;
1578 size
.ws_row
= height
;
1579 size
.ws_col
= width
;
1581 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1582 return 0; /* error */
1589 /* SunOS - style. */
1590 struct ttysize size
;
1591 size
.ts_lines
= height
;
1592 size
.ts_cols
= width
;
1594 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1600 #endif /* not SunOS-style */
1601 #endif /* not BSD-style */
1605 /* Prepare the terminal for exiting Emacs; move the cursor to the
1606 bottom of the frame, turn off interrupt-driven I/O, etc. */
1616 #ifdef HAVE_WINDOW_SYSTEM
1617 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1618 needs the clean-up code below. */
1619 if (read_socket_hook
|| !EQ (Vwindow_system
, Qnil
))
1622 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1623 clear_end_of_line (FRAME_WIDTH (selected_frame
));
1624 /* clear_end_of_line may move the cursor */
1625 cursor_to (FRAME_HEIGHT (selected_frame
) - 1, 0);
1626 #if defined (IBMR2AIX) && defined (AIXHFT)
1628 /* HFT devices normally use ^J as a LF/CR. We forced it to
1629 do the LF only. Now, we need to reset it. */
1632 if (ioctl (1, HFTGETID
, &tty
) != -1)
1633 write (1, "\033[20h", 5);
1637 reset_terminal_modes ();
1641 /* Avoid possible loss of output when changing terminal modes. */
1642 fsync (fileno (stdout
));
1647 #ifndef F_SETOWN_BUG
1648 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1649 if (interrupt_input
)
1652 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1654 #endif /* F_SETOWN */
1655 #endif /* F_SETOWN_BUG */
1657 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1659 #endif /* F_SETFL */
1661 if (interrupt_input
)
1666 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1669 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1673 #ifdef SET_LINE_DISCIPLINE
1674 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1675 A different old line discipline is therefore not restored, yet.
1676 Restore the old line discipline by hand. */
1677 ioctl (0, TIOCSETD
, &old_tty
.main
.c_line
);
1685 widen_foreground_group ();
1691 /* Set up the proper status flags for use of a pty. */
1696 /* I'm told that TOICREMOTE does not mean control chars
1697 "can't be sent" but rather that they don't have
1698 input-editing or signaling effects.
1699 That should be good, because we have other ways
1700 to do those things in Emacs.
1701 However, telnet mode seems not to work on 4.2.
1702 So TIOCREMOTE is turned off now. */
1704 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1705 will hang. In particular, the "timeout" feature (which
1706 causes a read to return if there is no data available)
1707 does this. Also it is known that telnet mode will hang
1708 in such a way that Emacs must be stopped (perhaps this
1709 is the same problem).
1711 If TIOCREMOTE is turned off, then there is a bug in
1712 hp-ux which sometimes loses data. Apparently the
1713 code which blocks the master process when the internal
1714 buffer fills up does not work. Other than this,
1715 though, everything else seems to work fine.
1717 Since the latter lossage is more benign, we may as well
1718 lose that way. -- cph */
1723 ioctl (fd
, FIONBIO
, &on
);
1728 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1729 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1730 /* cause EMACS not to die when it should, i.e., when its own controlling */
1731 /* tty goes away. I've complained to the AIX developers, and they may */
1732 /* change this behavior, but I'm not going to hold my breath. */
1733 signal (SIGHUP
, SIG_IGN
);
1736 #endif /* HAVE_PTYS */
1740 /* Assigning an input channel is done at the start of Emacs execution.
1741 This is called each time Emacs is resumed, also, but does nothing
1742 because input_chain is no longer zero. */
1750 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1756 /* Deassigning the input channel is done before exiting. */
1760 return SYS$
DASSGN (input_fd
);
1765 /* Request reading one character into the keyboard buffer.
1766 This is done as soon as the buffer becomes empty. */
1771 extern kbd_input_ast ();
1773 waiting_for_ast
= 0;
1775 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1776 &input_iosb
, kbd_input_ast
, 1,
1777 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1782 /* Ast routine that is called when keyboard input comes in
1783 in accord with the SYS$QIO above. */
1787 register int c
= -1;
1788 int old_errno
= errno
;
1789 extern EMACS_TIME
*input_available_clear_time
;
1791 if (waiting_for_ast
)
1792 SYS$
SETEF (input_ef
);
1793 waiting_for_ast
= 0;
1796 if (input_count
== 25)
1798 printf ("Ast # %d,", input_count
);
1799 printf (" iosb = %x, %x, %x, %x",
1800 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1803 if (input_iosb
.offset
)
1807 printf (", char = 0%o", c
);
1819 struct input_event e
;
1820 e
.kind
= ascii_keystroke
;
1821 XSETINT (e
.code
, c
);
1822 XSETFRAME (e
.frame_or_window
, selected_frame
);
1823 kbd_buffer_store_event (&e
);
1825 if (input_available_clear_time
)
1826 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1830 /* Wait until there is something in kbd_buffer. */
1832 wait_for_kbd_input ()
1834 extern int have_process_input
, process_exited
;
1836 /* If already something, avoid doing system calls. */
1837 if (detect_input_pending ())
1841 /* Clear a flag, and tell ast routine above to set it. */
1842 SYS$
CLREF (input_ef
);
1843 waiting_for_ast
= 1;
1844 /* Check for timing error: ast happened while we were doing that. */
1845 if (!detect_input_pending ())
1847 /* No timing error: wait for flag to be set. */
1848 set_waiting_for_input (0);
1849 SYS$
WFLOR (input_ef
, input_eflist
);
1850 clear_waiting_for_input (0);
1851 if (!detect_input_pending ())
1852 /* Check for subprocess input availability */
1854 int dsp
= have_process_input
|| process_exited
;
1856 SYS$
CLREF (process_ef
);
1857 if (have_process_input
)
1858 process_command_input ();
1863 update_mode_lines
++;
1864 prepare_menu_bars ();
1865 redisplay_preserve_echo_area ();
1869 waiting_for_ast
= 0;
1872 /* Get rid of any pending QIO, when we are about to suspend
1873 or when we want to throw away pending input.
1874 We wait for a positive sign that the AST routine has run
1875 and therefore there is no I/O request queued when we return.
1876 SYS$SETAST is used to avoid a timing error. */
1881 printf ("At end_kbd_input.\n");
1885 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
1887 SYS$
CANCEL (input_fd
);
1892 /* Clear a flag, and tell ast routine above to set it. */
1893 SYS$
CLREF (input_ef
);
1894 waiting_for_ast
= 1;
1896 SYS$
CANCEL (input_fd
);
1898 SYS$
WAITFR (input_ef
);
1899 waiting_for_ast
= 0;
1902 /* Wait for either input available or time interval expiry. */
1904 input_wait_timeout (timeval
)
1905 int timeval
; /* Time to wait, in seconds */
1908 static int zero
= 0;
1909 static int large
= -10000000;
1911 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1913 /* If already something, avoid doing system calls. */
1914 if (detect_input_pending ())
1918 /* Clear a flag, and tell ast routine above to set it. */
1919 SYS$
CLREF (input_ef
);
1920 waiting_for_ast
= 1;
1921 /* Check for timing error: ast happened while we were doing that. */
1922 if (!detect_input_pending ())
1924 /* No timing error: wait for flag to be set. */
1926 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1927 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
1929 waiting_for_ast
= 0;
1932 /* The standard `sleep' routine works some other way
1933 and it stops working if you have ever quit out of it.
1934 This one continues to work. */
1940 static int zero
= 0;
1941 static int large
= -10000000;
1943 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
1946 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
1947 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
1963 croak ("request sigio");
1968 croak ("unrequest sigio");
1973 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
1978 #ifndef SYSTEM_MALLOC
1985 /* Some systems that cannot dump also cannot implement these. */
1988 * Return the address of the start of the text segment prior to
1989 * doing an unexec. After unexec the return value is undefined.
1990 * See crt0.c for further explanation and _start.
1994 #ifndef HAVE_TEXT_START
1999 return ((char *) TEXT_START
);
2003 return ((char *) csrt
);
2004 #else /* not GOULD */
2005 extern int _start ();
2006 return ((char *) _start
);
2008 #endif /* TEXT_START */
2010 #endif /* not HAVE_TEXT_START */
2013 * Return the address of the start of the data segment prior to
2014 * doing an unexec. After unexec the return value is undefined.
2015 * See crt0.c for further information and definition of data_start.
2017 * Apparently, on BSD systems this is etext at startup. On
2018 * USG systems (swapping) this is highly mmu dependent and
2019 * is also dependent on whether or not the program is running
2020 * with shared text. Generally there is a (possibly large)
2021 * gap between end of text and start of data with shared text.
2023 * On Uniplus+ systems with shared text, data starts at a
2024 * fixed address. Each port (from a given oem) is generally
2025 * different, and the specific value of the start of data can
2026 * be obtained via the UniPlus+ specific "uvar" system call,
2027 * however the method outlined in crt0.c seems to be more portable.
2029 * Probably what will have to happen when a USG unexec is available,
2030 * at least on UniPlus, is temacs will have to be made unshared so
2031 * that text and data are contiguous. Then once loadup is complete,
2032 * unexec will produce a shared executable where the data can be
2033 * at the normal shared text boundary and the startofdata variable
2034 * will be patched by unexec to the correct value.
2042 return ((char *) DATA_START
);
2044 #ifdef ORDINARY_LINK
2046 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2047 * data_start isn't defined. We take the address of environ, which
2048 * is known to live at or near the start of the system crt0.c, and
2049 * we don't sweat the handful of bytes that might lose.
2051 extern char **environ
;
2053 return((char *) &environ
);
2055 extern int data_start
;
2056 return ((char *) &data_start
);
2057 #endif /* ORDINARY_LINK */
2058 #endif /* DATA_START */
2060 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2063 /* Some systems that cannot dump also cannot implement these. */
2066 * Return the address of the end of the text segment prior to
2067 * doing an unexec. After unexec the return value is undefined.
2074 return ((char *) TEXT_END
);
2077 return ((char *) &etext
);
2082 * Return the address of the end of the data segment prior to
2083 * doing an unexec. After unexec the return value is undefined.
2090 return ((char *) DATA_END
);
2093 return ((char *) &edata
);
2097 #endif /* not CANNOT_DUMP */
2099 /* init_system_name sets up the string for the Lisp function
2100 system-name to return. */
2106 extern Lisp_Object Vsystem_name
;
2111 #include <sys/socket.h>
2113 #endif /* HAVE_SOCKETS */
2114 #endif /* not VMS */
2115 #endif /* not BSD4_1 */
2121 Vsystem_name
= build_string (sysname
);
2125 if ((sp
= egetenv ("SYS$NODE")) == 0)
2126 Vsystem_name
= build_string ("vax-vms");
2127 else if ((end
= index (sp
, ':')) == 0)
2128 Vsystem_name
= build_string (sp
);
2130 Vsystem_name
= make_string (sp
, end
- sp
);
2132 #ifndef HAVE_GETHOSTNAME
2135 Vsystem_name
= build_string (uts
.nodename
);
2136 #else /* HAVE_GETHOSTNAME */
2137 unsigned int hostname_size
= 256;
2138 char *hostname
= (char *) alloca (hostname_size
);
2140 /* Try to get the host name; if the buffer is too short, try
2141 again. Apparently, the only indication gethostname gives of
2142 whether the buffer was large enough is the presence or absence
2143 of a '\0' in the string. Eech. */
2146 gethostname (hostname
, hostname_size
- 1);
2147 hostname
[hostname_size
- 1] = '\0';
2149 /* Was the buffer large enough for the '\0'? */
2150 if (strlen (hostname
) < hostname_size
- 1)
2153 hostname_size
<<= 1;
2154 hostname
= (char *) alloca (hostname_size
);
2157 /* Turn the hostname into the official, fully-qualified hostname.
2158 Don't do this if we're going to dump; this can confuse system
2159 libraries on some machines and make the dumped emacs core dump. */
2162 #endif /* not CANNOT_DUMP */
2166 for (count
= 0; count
< 10; count
++)
2171 hp
= gethostbyname (hostname
);
2173 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2176 Fsleep_for (make_number (1), Qnil
);
2180 char *fqdn
= (char *) hp
->h_name
;
2183 if (!index (fqdn
, '.'))
2185 /* We still don't have a fully qualified domain name.
2186 Try to find one in the list of alternate names */
2187 char **alias
= hp
->h_aliases
;
2188 while (*alias
&& !index (*alias
, '.'))
2195 /* Convert the host name to lower case. */
2196 /* Using ctype.h here would introduce a possible locale
2197 dependence that is probably wrong for hostnames. */
2201 if (*p
>= 'A' && *p
<= 'Z')
2208 #endif /* HAVE_SOCKETS */
2209 Vsystem_name
= build_string (hostname
);
2210 #endif /* HAVE_GETHOSTNAME */
2215 for (p
= XSTRING (Vsystem_name
)->data
; *p
; p
++)
2216 if (*p
== ' ' || *p
== '\t')
2223 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2225 #include "sysselect.h"
2228 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2229 /* Cause explanatory error message at compile time,
2230 since the select emulation is not good enough for X. */
2231 int *x
= &x_windows_lose_if_no_select_system_call
;
2234 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2235 * Only checks read descriptors.
2237 /* How long to wait between checking fds in select */
2238 #define SELECT_PAUSE 1
2241 /* For longjmp'ing back to read_input_waiting. */
2243 jmp_buf read_alarm_throw
;
2245 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2246 The read_socket_hook function sets this to 1 while it is waiting. */
2248 int read_alarm_should_throw
;
2256 #else /* not BSD4_1 */
2257 signal (SIGALRM
, SIG_IGN
);
2258 #endif /* not BSD4_1 */
2259 if (read_alarm_should_throw
)
2260 longjmp (read_alarm_throw
, 1);
2264 /* Only rfds are checked. */
2266 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2268 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2269 EMACS_TIME
*timeout
;
2271 int ravail
= 0, old_alarm
;
2275 extern int proc_buffered_char
[];
2276 #ifndef subprocesses
2277 int process_tick
= 0, update_tick
= 0;
2279 extern int process_tick
, update_tick
;
2281 SIGTYPE (*old_trap
) ();
2284 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2285 /* If we're using X, then the native select will work; we only need the
2286 emulation for non-X usage. */
2287 if (!NILP (Vwindow_system
))
2288 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2290 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2291 local_timeout
= &timeoutval
;
2303 /* If we are looking only for the terminal, with no timeout,
2304 just read it and wait -- that's more efficient. */
2305 if (*local_timeout
== 100000 && process_tick
== update_tick
2306 && FD_ISSET (0, &orfds
))
2309 for (fd
= 1; fd
< nfds
; ++fd
)
2310 if (FD_ISSET (fd
, &orfds
))
2312 if (! detect_input_pending ())
2313 read_input_waiting ();
2319 /* Once a second, till the timer expires, check all the flagged read
2320 * descriptors to see if any input is available. If there is some then
2321 * set the corresponding bit in the return copy of rfds.
2325 register int to_check
, fd
;
2329 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2331 if (FD_ISSET (fd
, &orfds
))
2333 int avail
= 0, status
= 0;
2336 avail
= detect_input_pending (); /* Special keyboard handler */
2340 status
= ioctl (fd
, FIONREAD
, &avail
);
2341 #else /* no FIONREAD */
2342 /* Hoping it will return -1 if nothing available
2343 or 0 if all 0 chars requested are read. */
2344 if (proc_buffered_char
[fd
] >= 0)
2348 avail
= read (fd
, &buf
, 1);
2350 proc_buffered_char
[fd
] = buf
;
2352 #endif /* no FIONREAD */
2354 if (status
>= 0 && avail
> 0)
2362 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2364 old_alarm
= alarm (0);
2365 old_trap
= signal (SIGALRM
, select_alarm
);
2367 alarm (SELECT_PAUSE
);
2368 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2369 while (select_alarmed
== 0 && *local_timeout
!= 0
2370 && process_tick
== update_tick
)
2372 /* If we are interested in terminal input,
2373 wait by reading the terminal.
2374 That makes instant wakeup for terminal input at least. */
2375 if (FD_ISSET (0, &orfds
))
2377 read_input_waiting ();
2378 if (detect_input_pending ())
2384 (*local_timeout
) -= SELECT_PAUSE
;
2385 /* Reset the old alarm if there was one */
2387 signal (SIGALRM
, old_trap
);
2390 /* Reset or forge an interrupt for the original handler. */
2391 old_alarm
-= SELECT_PAUSE
;
2393 kill (getpid (), SIGALRM
); /* Fake an alarm with the orig' handler */
2397 if (*local_timeout
== 0) /* Stop on timer being cleared */
2402 #endif /* not WINDOWSNT */
2404 /* Read keyboard input into the standard buffer,
2405 waiting for at least one character. */
2407 /* Make all keyboard buffers much bigger when using a window system. */
2408 #ifdef HAVE_WINDOW_SYSTEM
2409 #define BUFFER_SIZE_FACTOR 16
2411 #define BUFFER_SIZE_FACTOR 1
2414 read_input_waiting ()
2416 struct input_event e
;
2418 extern int quit_char
;
2420 if (read_socket_hook
)
2422 struct input_event buf
[256];
2424 read_alarm_should_throw
= 0;
2425 if (! setjmp (read_alarm_throw
))
2426 nread
= (*read_socket_hook
) (0, buf
, 256, 1, 0);
2430 /* Scan the chars for C-g and store them in kbd_buffer. */
2431 for (i
= 0; i
< nread
; i
++)
2433 kbd_buffer_store_event (&buf
[i
]);
2434 /* Don't look at input that follows a C-g too closely.
2435 This reduces lossage due to autorepeat on C-g. */
2436 if (buf
[i
].kind
== ascii_keystroke
2437 && buf
[i
].code
== quit_char
)
2444 nread
= read (fileno (stdin
), buf
, 1);
2446 /* Scan the chars for C-g and store them in kbd_buffer. */
2447 e
.kind
= ascii_keystroke
;
2448 XSETFRAME (e
.frame_or_window
, selected_frame
);
2450 for (i
= 0; i
< nread
; i
++)
2452 /* Convert chars > 0177 to meta events if desired.
2453 We do this under the same conditions that read_avail_input does. */
2454 if (read_socket_hook
== 0)
2456 /* If the user says she has a meta key, then believe her. */
2457 if (meta_key
== 1 && (buf
[i
] & 0x80))
2458 e
.modifiers
= meta_modifier
;
2463 XSETINT (e
.code
, buf
[i
]);
2464 kbd_buffer_store_event (&e
);
2465 /* Don't look at input that follows a C-g too closely.
2466 This reduces lossage due to autorepeat on C-g. */
2467 if (buf
[i
] == quit_char
)
2473 #endif /* not HAVE_SELECT */
2474 #endif /* not VMS */
2475 #endif /* not MSDOS */
2479 * Partially emulate 4.2 open call.
2480 * open is defined as this in 4.1.
2482 * - added by Michael Bloom @ Citicorp/TTI
2487 sys_open (path
, oflag
, mode
)
2491 if (oflag
& O_CREAT
)
2492 return creat (path
, mode
);
2494 return open (path
, oflag
);
2502 lmode
= LINTRUP
| lmode
;
2503 ioctl (fd
, TIOCLSET
, &lmode
);
2510 lmode
= ~LINTRUP
& lmode
;
2511 ioctl (0, TIOCLSET
, &lmode
);
2518 interrupts_deferred
= 0;
2525 interrupts_deferred
= 1;
2528 /* still inside #ifdef BSD4_1 */
2531 int sigheld
; /* Mask of held signals */
2536 sigheld
|= sigbit (signum
);
2543 sigheld
|= sigbit (signum
);
2549 sigheld
&= ~sigbit (signum
);
2553 sigfree () /* Free all held signals */
2556 for (i
= 0; i
< NSIG
; i
++)
2557 if (sigheld
& sigbit (i
))
2564 return 1 << (i
- 1);
2566 #endif /* subprocesses */
2569 /* POSIX signals support - DJB */
2570 /* Anyone with POSIX signals should have ANSI C declarations */
2572 #ifdef POSIX_SIGNALS
2574 sigset_t old_mask
, empty_mask
, full_mask
, temp_mask
;
2575 static struct sigaction new_action
, old_action
;
2579 sigemptyset (&empty_mask
);
2580 sigfillset (&full_mask
);
2584 sys_signal (int signal_number
, signal_handler_t action
)
2587 /* This gets us restartable system calls for efficiency.
2588 The "else" code will works as well. */
2589 return (berk_signal (signal_number
, action
));
2591 sigemptyset (&new_action
.sa_mask
);
2592 new_action
.sa_handler
= action
;
2594 /* Emacs mostly works better with restartable system services. If this
2595 * flag exists, we probably want to turn it on here.
2597 new_action
.sa_flags
= SA_RESTART
;
2599 new_action
.sa_flags
= 0;
2601 sigaction (signal_number
, &new_action
, &old_action
);
2602 return (old_action
.sa_handler
);
2607 /* If we're compiling with GCC, we don't need this function, since it
2608 can be written as a macro. */
2610 sys_sigmask (int sig
)
2613 sigemptyset (&mask
);
2614 sigaddset (&mask
, sig
);
2620 sys_sigpause (sigset_t new_mask
)
2622 /* pause emulating berk sigpause... */
2623 sigsuspend (&new_mask
);
2627 /* I'd like to have these guys return pointers to the mask storage in here,
2628 but there'd be trouble if the code was saving multiple masks. I'll be
2629 safe and pass the structure. It normally won't be more than 2 bytes
2633 sys_sigblock (sigset_t new_mask
)
2636 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2641 sys_sigunblock (sigset_t new_mask
)
2644 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2649 sys_sigsetmask (sigset_t new_mask
)
2652 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2656 #endif /* POSIX_SIGNALS */
2664 /* Figure out how many bits the system's random number generator uses.
2665 `random' and `lrand48' are assumed to return 31 usable bits.
2666 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2667 so we'll shift it and treat it like the 15-bit USG `rand'. */
2671 # define RAND_BITS 31
2672 # else /* !HAVE_RANDOM */
2673 # ifdef HAVE_LRAND48
2674 # define RAND_BITS 31
2675 # define random lrand48
2676 # else /* !HAVE_LRAND48 */
2677 # define RAND_BITS 15
2678 # if RAND_MAX == 32767
2679 # define random rand
2680 # else /* RAND_MAX != 32767 */
2681 # if RAND_MAX == 2147483647
2682 # define random() (rand () >> 16)
2683 # else /* RAND_MAX != 2147483647 */
2685 # define random rand
2687 # define random() (rand () >> 16)
2689 # endif /* RAND_MAX != 2147483647 */
2690 # endif /* RAND_MAX != 32767 */
2691 # endif /* !HAVE_LRAND48 */
2692 # endif /* !HAVE_RANDOM */
2693 #endif /* !RAND_BITS */
2700 srandom ((unsigned int)arg
);
2702 # ifdef HAVE_LRAND48
2705 srand ((unsigned int)arg
);
2711 * Build a full Emacs-sized word out of whatever we've got.
2712 * This suffices even for a 64-bit architecture with a 15-bit rand.
2717 long val
= random ();
2718 #if VALBITS > RAND_BITS
2719 val
= (val
<< RAND_BITS
) ^ random ();
2720 #if VALBITS > 2*RAND_BITS
2721 val
= (val
<< RAND_BITS
) ^ random ();
2722 #if VALBITS > 3*RAND_BITS
2723 val
= (val
<< RAND_BITS
) ^ random ();
2724 #if VALBITS > 4*RAND_BITS
2725 val
= (val
<< RAND_BITS
) ^ random ();
2726 #endif /* need at least 5 */
2727 #endif /* need at least 4 */
2728 #endif /* need at least 3 */
2729 #endif /* need at least 2 */
2730 return val
& ((1L << VALBITS
) - 1);
2733 #ifdef WRONG_NAME_INSQUE
2746 /* If any place else asks for the TERM variable,
2747 allow it to be overridden with the EMACS_TERM variable
2748 before attempting to translate the logical name TERM. As a last
2749 resort, ask for VAX C's special idea of the TERM variable. */
2756 static char buf
[256];
2757 static struct dsc$descriptor_s equiv
2758 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
2759 static struct dsc$descriptor_s d_name
2760 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
2763 if (!strcmp (name
, "TERM"))
2765 val
= (char *) getenv ("EMACS_TERM");
2770 d_name
.dsc$w_length
= strlen (name
);
2771 d_name
.dsc$a_pointer
= name
;
2772 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
2774 char *str
= (char *) xmalloc (eqlen
+ 1);
2775 bcopy (buf
, str
, eqlen
);
2777 /* This is a storage leak, but a pain to fix. With luck,
2778 no one will ever notice. */
2781 return (char *) getenv (name
);
2786 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
2787 to force a call on the debugger from within the image. */
2792 LIB$
SIGNAL (SS$_DEBUG
);
2798 #ifdef LINK_CRTL_SHARE
2799 #ifdef SHARABLE_LIB_BUG
2800 /* Variables declared noshare and initialized in sharable libraries
2801 cannot be shared. The VMS linker incorrectly forces you to use a private
2802 version which is uninitialized... If not for this "feature", we
2803 could use the C library definition of sys_nerr and sys_errlist. */
2805 char *sys_errlist
[] =
2809 "no such file or directory",
2811 "interrupted system call",
2813 "no such device or address",
2814 "argument list too long",
2815 "exec format error",
2818 "no more processes",
2819 "not enough memory",
2820 "permission denied",
2822 "block device required",
2823 "mount devices busy",
2825 "cross-device link",
2830 "file table overflow",
2831 "too many open files",
2835 "no space left on device",
2837 "read-only file system",
2843 "vax/vms specific error code nontranslatable error"
2845 #endif /* SHARABLE_LIB_BUG */
2846 #endif /* LINK_CRTL_SHARE */
2849 #ifndef HAVE_STRERROR
2855 extern char *sys_errlist
[];
2856 extern int sys_nerr
;
2858 if (errnum
>= 0 && errnum
< sys_nerr
)
2859 return sys_errlist
[errnum
];
2860 return (char *) "Unknown error";
2862 #endif /* not WINDOWSNT */
2863 #endif /* ! HAVE_STRERROR */
2865 #ifdef INTERRUPTIBLE_OPEN
2869 sys_open (path
, oflag
, mode
)
2873 register int rtnval
;
2875 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2876 && (errno
== EINTR
));
2880 #endif /* INTERRUPTIBLE_OPEN */
2882 #ifdef INTERRUPTIBLE_CLOSE
2888 register int rtnval
;
2890 while ((rtnval
= close (fd
)) == -1
2891 && (errno
== EINTR
))
2894 /* If close is interrupted SunOS 4.1 may or may not have closed the
2895 file descriptor. If it did the second close will fail with
2896 errno = EBADF. That means we have succeeded. */
2897 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2903 #endif /* INTERRUPTIBLE_CLOSE */
2905 #ifdef INTERRUPTIBLE_IO
2908 sys_read (fildes
, buf
, nbyte
)
2913 register int rtnval
;
2915 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2916 && (errno
== EINTR
));
2921 sys_write (fildes
, buf
, nbyte
)
2926 register int rtnval
, bytes_written
;
2932 rtnval
= write (fildes
, buf
, nbyte
);
2939 return (bytes_written
? bytes_written
: -1);
2944 bytes_written
+= rtnval
;
2946 return (bytes_written
);
2949 #endif /* INTERRUPTIBLE_IO */
2954 * Substitute fork for vfork on USG flavors.
2962 #endif /* not WINDOWSNT */
2963 #endif /* not HAVE_VFORK */
2967 * All of the following are for USG.
2969 * On USG systems the system calls are INTERRUPTIBLE by signals
2970 * that the user program has elected to catch. Thus the system call
2971 * must be retried in these cases. To handle this without massive
2972 * changes in the source code, we remap the standard system call names
2973 * to names for our own functions in sysdep.c that do the system call
2974 * with retries. Actually, for portability reasons, it is good
2975 * programming practice, as this example shows, to limit all actual
2976 * system calls to a single occurrence in the source. Sure, this
2977 * adds an extra level of function call overhead but it is almost
2978 * always negligible. Fred Fish, Unisoft Systems Inc.
2981 #ifndef HAVE_SYS_SIGLIST
2982 char *sys_siglist
[NSIG
+ 1] =
2985 /* AIX has changed the signals a bit */
2986 "bogus signal", /* 0 */
2987 "hangup", /* 1 SIGHUP */
2988 "interrupt", /* 2 SIGINT */
2989 "quit", /* 3 SIGQUIT */
2990 "illegal instruction", /* 4 SIGILL */
2991 "trace trap", /* 5 SIGTRAP */
2992 "IOT instruction", /* 6 SIGIOT */
2993 "crash likely", /* 7 SIGDANGER */
2994 "floating point exception", /* 8 SIGFPE */
2995 "kill", /* 9 SIGKILL */
2996 "bus error", /* 10 SIGBUS */
2997 "segmentation violation", /* 11 SIGSEGV */
2998 "bad argument to system call", /* 12 SIGSYS */
2999 "write on a pipe with no one to read it", /* 13 SIGPIPE */
3000 "alarm clock", /* 14 SIGALRM */
3001 "software termination signum", /* 15 SIGTERM */
3002 "user defined signal 1", /* 16 SIGUSR1 */
3003 "user defined signal 2", /* 17 SIGUSR2 */
3004 "death of a child", /* 18 SIGCLD */
3005 "power-fail restart", /* 19 SIGPWR */
3006 "bogus signal", /* 20 */
3007 "bogus signal", /* 21 */
3008 "bogus signal", /* 22 */
3009 "bogus signal", /* 23 */
3010 "bogus signal", /* 24 */
3011 "LAN I/O interrupt", /* 25 SIGAIO */
3012 "PTY I/O interrupt", /* 26 SIGPTY */
3013 "I/O intervention required", /* 27 SIGIOINT */
3015 "HFT grant", /* 28 SIGGRANT */
3016 "HFT retract", /* 29 SIGRETRACT */
3017 "HFT sound done", /* 30 SIGSOUND */
3018 "HFT input ready", /* 31 SIGMSG */
3021 "bogus signal", /* 0 */
3022 "hangup", /* 1 SIGHUP */
3023 "interrupt", /* 2 SIGINT */
3024 "quit", /* 3 SIGQUIT */
3025 "illegal instruction", /* 4 SIGILL */
3026 "trace trap", /* 5 SIGTRAP */
3027 "IOT instruction", /* 6 SIGIOT */
3028 "EMT instruction", /* 7 SIGEMT */
3029 "floating point exception", /* 8 SIGFPE */
3030 "kill", /* 9 SIGKILL */
3031 "bus error", /* 10 SIGBUS */
3032 "segmentation violation", /* 11 SIGSEGV */
3033 "bad argument to system call", /* 12 SIGSYS */
3034 "write on a pipe with no one to read it", /* 13 SIGPIPE */
3035 "alarm clock", /* 14 SIGALRM */
3036 "software termination signum", /* 15 SIGTERM */
3037 "user defined signal 1", /* 16 SIGUSR1 */
3038 "user defined signal 2", /* 17 SIGUSR2 */
3039 "death of a child", /* 18 SIGCLD */
3040 "power-fail restart", /* 19 SIGPWR */
3042 "window size change", /* 20 SIGWINCH */
3043 "urgent socket condition", /* 21 SIGURG */
3044 "pollable event occurred", /* 22 SIGPOLL */
3045 "stop (cannot be caught or ignored)", /* 23 SIGSTOP */
3046 "user stop requested from tty", /* 24 SIGTSTP */
3047 "stopped process has been continued", /* 25 SIGCONT */
3048 "background tty read attempted", /* 26 SIGTTIN */
3049 "background tty write attempted", /* 27 SIGTTOU */
3050 "virtual timer expired", /* 28 SIGVTALRM */
3051 "profiling timer expired", /* 29 SIGPROF */
3052 "exceeded cpu limit", /* 30 SIGXCPU */
3053 "exceeded file size limit", /* 31 SIGXFSZ */
3054 "process's lwps are blocked", /* 32 SIGWAITING */
3055 "special signal used by thread library", /* 33 SIGLWP */
3057 "Special Signal Used By CPR", /* 34 SIGFREEZE */
3060 "Special Signal Used By CPR", /* 35 SIGTHAW */
3063 #endif /* not AIX */
3066 #endif /* HAVE_SYS_SIGLIST */
3069 * Warning, this function may not duplicate 4.2 action properly
3070 * under error conditions.
3074 /* In 4.1, param.h fails to define this. */
3075 #define MAXPATHLEN 1024
3084 char *npath
, *spath
;
3085 extern char *getcwd ();
3087 BLOCK_INPUT
; /* getcwd uses malloc */
3088 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3091 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3092 up to first slash. Should be harmless on other systems. */
3093 while (*npath
&& *npath
!= '/')
3095 strcpy (pathname
, npath
);
3096 free (spath
); /* getcwd uses malloc */
3101 #endif /* HAVE_GETWD */
3104 * Emulate rename using unlink/link. Note that this is
3105 * only partially correct. Also, doesn't enforce restriction
3106 * that files be of same type (regular->regular, dir->dir, etc).
3115 if (access (from
, 0) == 0)
3118 if (link (from
, to
) == 0)
3119 if (unlink (from
) == 0)
3131 /* HPUX curses library references perror, but as far as we know
3132 it won't be called. Anyway this definition will do for now. */
3138 #endif /* not HAVE_PERROR */
3144 * Emulate BSD dup2. First close newd if it already exists.
3145 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3146 * until we are, then close the unsuccessful ones.
3153 register int fd
, ret
;
3158 fd
= fcntl (oldd
, F_DUPFD
, newd
);
3160 error ("can't dup2 (%i,%i) : %s", oldd
, newd
, strerror (errno
));
3167 ret
= dup2 (old
,new);
3173 #endif /* not HAVE_DUP2 */
3176 * Gettimeofday. Simulate as much as possible. Only accurate
3177 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3178 * Only needed when subprocesses are defined.
3183 #ifndef HAVE_GETTIMEOFDAY
3187 gettimeofday (tp
, tzp
)
3189 struct timezone
*tzp
;
3191 extern long time ();
3193 tp
->tv_sec
= time ((long *)0);
3196 tzp
->tz_minuteswest
= -1;
3202 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3205 * This function will go away as soon as all the stubs fixed. (fnf)
3211 printf ("%s not yet implemented\r\n", badfunc
);
3220 char *sys_siglist
[NSIG
+ 1] =
3222 "null signal", /* 0 SIGNULL */
3223 "hangup", /* 1 SIGHUP */
3224 "interrupt", /* 2 SIGINT */
3225 "quit", /* 3 SIGQUIT */
3226 "illegal instruction", /* 4 SIGILL */
3227 "trace trap", /* 5 SIGTRAP */
3228 "abort termination", /* 6 SIGABRT */
3229 "SIGEMT", /* 7 SIGEMT */
3230 "floating point exception", /* 8 SIGFPE */
3231 "kill", /* 9 SIGKILL */
3232 "bus error", /* 10 SIGBUS */
3233 "segmentation violation", /* 11 SIGSEGV */
3234 "bad argument to system call", /* 12 SIGSYS */
3235 "write on a pipe with no reader", /* 13 SIGPIPE */
3236 "alarm clock", /* 14 SIGALRM */
3237 "software termination signal", /* 15 SIGTERM */
3238 "user defined signal 1", /* 16 SIGUSR1 */
3239 "user defined signal 2", /* 17 SIGUSR2 */
3240 "child stopped or terminated", /* 18 SIGCLD */
3241 "power-fail restart", /* 19 SIGPWR */
3242 "window size changed", /* 20 SIGWINCH */
3243 "undefined", /* 21 */
3244 "pollable event occurred", /* 22 SIGPOLL */
3245 "sendable stop signal not from tty", /* 23 SIGSTOP */
3246 "stop signal from tty", /* 24 SIGSTP */
3247 "continue a stopped process", /* 25 SIGCONT */
3248 "attempted background tty read", /* 26 SIGTTIN */
3249 "attempted background tty write", /* 27 SIGTTOU */
3250 "undefined", /* 28 */
3251 "undefined", /* 29 */
3252 "undefined", /* 30 */
3253 "undefined", /* 31 */
3254 "undefined", /* 32 */
3255 "socket (TCP/IP) urgent data arrival", /* 33 SIGURG */
3256 "I/O is possible", /* 34 SIGIO */
3257 "exceeded cpu time limit", /* 35 SIGXCPU */
3258 "exceeded file size limit", /* 36 SIGXFSZ */
3259 "virtual time alarm", /* 37 SIGVTALRM */
3260 "profiling time alarm", /* 38 SIGPROF */
3261 "undefined", /* 39 */
3262 "file record locks revoked", /* 40 SIGLOST */
3263 "undefined", /* 41 */
3264 "undefined", /* 42 */
3265 "undefined", /* 43 */
3266 "undefined", /* 44 */
3267 "undefined", /* 45 */
3268 "undefined", /* 46 */
3269 "undefined", /* 47 */
3270 "undefined", /* 48 */
3271 "undefined", /* 49 */
3272 "undefined", /* 50 */
3273 "undefined", /* 51 */
3274 "undefined", /* 52 */
3275 "undefined", /* 53 */
3276 "undefined", /* 54 */
3277 "undefined", /* 55 */
3278 "undefined", /* 56 */
3279 "undefined", /* 57 */
3280 "undefined", /* 58 */
3281 "undefined", /* 59 */
3282 "undefined", /* 60 */
3283 "undefined", /* 61 */
3284 "undefined", /* 62 */
3285 "undefined", /* 63 */
3286 "notification message in mess. queue", /* 64 SIGDGNOTIFY */
3292 /* Directory routines for systems that don't have them. */
3294 #ifdef SYSV_SYSTEM_DIR
3298 #if defined(BROKEN_CLOSEDIR) || !defined(HAVE_CLOSEDIR)
3302 register DIR *dirp
; /* stream from opendir */
3306 rtnval
= sys_close (dirp
->dd_fd
);
3308 /* Some systems (like Solaris) allocate the buffer and the DIR all
3309 in one block. Why in the world are we freeing this ourselves
3311 #if ! (defined (sun) && defined (USG5_4))
3312 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3314 xfree ((char *) dirp
);
3318 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3319 #endif /* SYSV_SYSTEM_DIR */
3321 #ifdef NONSYSTEM_DIR_LIBRARY
3325 char *filename
; /* name of directory */
3327 register DIR *dirp
; /* -> malloc'ed storage */
3328 register int fd
; /* file descriptor for read */
3329 struct stat sbuf
; /* result of fstat */
3331 fd
= sys_open (filename
, 0);
3336 if (fstat (fd
, &sbuf
) < 0
3337 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3338 || (dirp
= (DIR *) malloc (sizeof (DIR))) == 0)
3342 return 0; /* bad luck today */
3347 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3354 register DIR *dirp
; /* stream from opendir */
3356 sys_close (dirp
->dd_fd
);
3357 xfree ((char *) dirp
);
3365 ino_t od_ino
; /* inode */
3366 char od_name
[DIRSIZ
]; /* filename */
3368 #endif /* not VMS */
3370 struct direct dir_static
; /* simulated directory contents */
3375 register DIR *dirp
; /* stream from opendir */
3378 register struct olddir
*dp
; /* -> directory data */
3380 register struct dir$_name
*dp
; /* -> directory data */
3381 register struct dir$_version
*dv
; /* -> version data */
3386 if (dirp
->dd_loc
>= dirp
->dd_size
)
3387 dirp
->dd_loc
= dirp
->dd_size
= 0;
3389 if (dirp
->dd_size
== 0 /* refill buffer */
3390 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3394 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3395 dirp
->dd_loc
+= sizeof (struct olddir
);
3397 if (dp
->od_ino
!= 0) /* not deleted entry */
3399 dir_static
.d_ino
= dp
->od_ino
;
3400 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3401 dir_static
.d_name
[DIRSIZ
] = '\0';
3402 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3403 dir_static
.d_reclen
= sizeof (struct direct
)
3405 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3406 return &dir_static
; /* -> simulated structure */
3409 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3410 if (dirp
->dd_loc
== 0)
3411 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3412 : dp
->dir$b_namecount
;
3413 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3414 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3415 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3416 dir_static
.d_reclen
= sizeof (struct direct
)
3418 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3419 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3420 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3421 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3428 /* readdirver is just like readdir except it returns all versions of a file
3429 as separate entries. */
3434 register DIR *dirp
; /* stream from opendir */
3436 register struct dir$_name
*dp
; /* -> directory data */
3437 register struct dir$_version
*dv
; /* -> version data */
3439 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3440 dirp
->dd_loc
= dirp
->dd_size
= 0;
3442 if (dirp
->dd_size
== 0 /* refill buffer */
3443 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3446 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3447 if (dirp
->dd_loc
== 0)
3448 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3449 : dp
->dir$b_namecount
;
3450 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3451 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3452 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3453 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3454 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3455 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3456 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3457 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3463 #endif /* NONSYSTEM_DIR_LIBRARY */
3467 set_file_times (filename
, atime
, mtime
)
3469 EMACS_TIME atime
, mtime
;
3472 struct timeval tv
[2];
3475 return utimes (filename
, tv
);
3476 #else /* not HAVE_UTIMES */
3478 utb
.actime
= EMACS_SECS (atime
);
3479 utb
.modtime
= EMACS_SECS (mtime
);
3480 return utime (filename
, &utb
);
3481 #endif /* not HAVE_UTIMES */
3484 /* mkdir and rmdir functions, for systems which don't have them. */
3488 * Written by Robert Rother, Mariah Corporation, August 1985.
3490 * If you want it, it's yours. All I ask in return is that if you
3491 * figure out how to do this in a Bourne Shell script you send me
3493 * sdcsvax!rmr or rmr@uscd
3495 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3496 * subroutine. 11Mar86; hoptoad!gnu
3498 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3499 * subroutine didn't return EEXIST. It does now.
3505 #ifdef MKDIR_PROTOTYPE
3509 mkdir (dpath
, dmode
)
3514 int cpid
, status
, fd
;
3515 struct stat statbuf
;
3517 if (stat (dpath
, &statbuf
) == 0)
3519 errno
= EEXIST
; /* Stat worked, so it already exists */
3523 /* If stat fails for a reason other than non-existence, return error */
3524 if (errno
!= ENOENT
)
3527 synch_process_alive
= 1;
3528 switch (cpid
= fork ())
3531 case -1: /* Error in fork */
3532 return (-1); /* Errno is set already */
3534 case 0: /* Child process */
3536 * Cheap hack to set mode of new directory. Since this
3537 * child process is going away anyway, we zap its umask.
3538 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3539 * directory. Does anybody care?
3541 status
= umask (0); /* Get current umask */
3542 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3543 fd
= sys_open("/dev/null", 2);
3550 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3551 _exit (-1); /* Can't exec /bin/mkdir */
3553 default: /* Parent process */
3554 wait_for_termination (cpid
);
3557 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3559 errno
= EIO
; /* We don't know why, but */
3560 return -1; /* /bin/mkdir failed */
3565 #endif /* not HAVE_MKDIR */
3572 int cpid
, status
, fd
;
3573 struct stat statbuf
;
3575 if (stat (dpath
, &statbuf
) != 0)
3577 /* Stat just set errno. We don't have to */
3581 synch_process_alive
= 1;
3582 switch (cpid
= fork ())
3585 case -1: /* Error in fork */
3586 return (-1); /* Errno is set already */
3588 case 0: /* Child process */
3589 fd
= sys_open("/dev/null", 2);
3596 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3597 _exit (-1); /* Can't exec /bin/rmdir */
3599 default: /* Parent process */
3600 wait_for_termination (cpid
);
3603 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3605 errno
= EIO
; /* We don't know why, but */
3606 return -1; /* /bin/rmdir failed */
3611 #endif /* !HAVE_RMDIR */
3615 /* Functions for VMS */
3617 #include "vms-pwd.h"
3622 /* Return as a string the VMS error string pertaining to STATUS.
3623 Reuses the same static buffer each time it is called. */
3627 int status
; /* VMS status code */
3631 static char buf
[257];
3633 bufadr
[0] = sizeof buf
- 1;
3634 bufadr
[1] = (int) buf
;
3635 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3636 return "untranslatable VMS error status";
3644 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3645 * not work correctly. (It also doesn't work well in version 2.3.)
3650 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3651 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3655 unsigned short s_buflen
;
3656 unsigned short s_code
;
3658 unsigned short *s_retlenadr
;
3662 #define buflen s.s_buflen
3663 #define code s.s_code
3664 #define bufadr s.s_bufadr
3665 #define retlenadr s.s_retlenadr
3667 #define R_OK 4 /* test for read permission */
3668 #define W_OK 2 /* test for write permission */
3669 #define X_OK 1 /* test for execute (search) permission */
3670 #define F_OK 0 /* test for presence of file */
3673 sys_access (path
, mode
)
3677 static char *user
= NULL
;
3680 /* translate possible directory spec into .DIR file name, so brain-dead
3681 * access can treat the directory like a file. */
3682 if (directory_file_name (path
, dir_fn
))
3686 return access (path
, mode
);
3687 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3693 unsigned short int dummy
;
3695 static int constant
= ACL$C_FILE
;
3696 DESCRIPTOR (path_desc
, path
);
3697 DESCRIPTOR (user_desc
, user
);
3701 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3704 acces
|= CHP$M_READ
;
3706 acces
|= CHP$M_WRITE
;
3707 itemlst
[0].buflen
= sizeof (int);
3708 itemlst
[0].code
= CHP$_FLAGS
;
3709 itemlst
[0].bufadr
= (char *) &flags
;
3710 itemlst
[0].retlenadr
= &dummy
;
3711 itemlst
[1].buflen
= sizeof (int);
3712 itemlst
[1].code
= CHP$_ACCESS
;
3713 itemlst
[1].bufadr
= (char *) &acces
;
3714 itemlst
[1].retlenadr
= &dummy
;
3715 itemlst
[2].end
= CHP$_END
;
3716 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3717 return stat
== SS$_NORMAL
? 0 : -1;
3721 #else /* not VMS4_4 */
3724 #define ACE$M_WRITE 2
3725 #define ACE$C_KEYID 1
3727 static unsigned short memid
, grpid
;
3728 static unsigned int uic
;
3730 /* Called from init_sys_modes, so it happens not very often
3731 but at least each time Emacs is loaded. */
3732 sys_access_reinit ()
3738 sys_access (filename
, type
)
3744 int status
, size
, i
, typecode
, acl_controlled
;
3745 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3746 union prvdef prvmask
;
3748 /* Get UIC and GRP values for protection checking. */
3751 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3754 memid
= uic
& 0xFFFF;
3758 if (type
!= 2) /* not checking write access */
3759 return access (filename
, type
);
3761 /* Check write protection. */
3763 #define CHECKPRIV(bit) (prvmask.bit)
3764 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3766 /* Find privilege bits */
3767 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3769 error ("Unable to find privileges: %s", vmserrstr (status
));
3770 if (CHECKPRIV (PRV$V_BYPASS
))
3771 return 0; /* BYPASS enabled */
3773 fab
.fab$b_fac
= FAB$M_GET
;
3774 fab
.fab$l_fna
= filename
;
3775 fab
.fab$b_fns
= strlen (filename
);
3776 fab
.fab$l_xab
= &xab
;
3777 xab
= cc$rms_xabpro
;
3778 xab
.xab$l_aclbuf
= aclbuf
;
3779 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3780 status
= SYS$
OPEN (&fab
, 0, 0);
3783 SYS$
CLOSE (&fab
, 0, 0);
3784 /* Check system access */
3785 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
3787 /* Check ACL entries, if any */
3789 if (xab
.xab$w_acllen
> 0)
3792 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3793 while (*aclptr
&& aclptr
< aclend
)
3795 size
= (*aclptr
& 0xff) / 4;
3796 typecode
= (*aclptr
>> 8) & 0xff;
3797 if (typecode
== ACE$C_KEYID
)
3798 for (i
= size
- 1; i
> 1; i
--)
3799 if (aclptr
[i
] == uic
)
3802 if (aclptr
[1] & ACE$M_WRITE
)
3803 return 0; /* Write access through ACL */
3805 aclptr
= &aclptr
[size
];
3807 if (acl_controlled
) /* ACL specified, prohibits write access */
3810 /* No ACL entries specified, check normal protection */
3811 if (WRITABLE (XAB$V_WLD
)) /* World writable */
3813 if (WRITABLE (XAB$V_GRP
) &&
3814 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3815 return 0; /* Group writable */
3816 if (WRITABLE (XAB$V_OWN
) &&
3817 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3818 return 0; /* Owner writable */
3820 return -1; /* Not writable */
3822 #endif /* not VMS4_4 */
3825 static char vtbuf
[NAM$C_MAXRSS
+1];
3827 /* translate a vms file spec to a unix path */
3829 sys_translate_vms (vfile
)
3840 /* leading device or logical name is a root directory */
3841 if (p
= strchr (vfile
, ':'))
3850 if (*p
== '[' || *p
== '<')
3852 while (*++vfile
!= *p
+ 2)
3856 if (vfile
[-1] == *p
)
3879 static char utbuf
[NAM$C_MAXRSS
+1];
3881 /* translate a unix path to a VMS file spec */
3883 sys_translate_unix (ufile
)
3906 if (index (&ufile
[1], '/'))
3913 if (index (&ufile
[1], '/'))
3920 if (strncmp (ufile
, "./", 2) == 0)
3927 ufile
++; /* skip the dot */
3928 if (index (&ufile
[1], '/'))
3933 else if (strncmp (ufile
, "../", 3) == 0)
3941 ufile
+= 2; /* skip the dots */
3942 if (index (&ufile
[1], '/'))
3967 extern char *getcwd ();
3969 #define MAXPATHLEN 1024
3971 ptr
= xmalloc (MAXPATHLEN
);
3972 val
= getcwd (ptr
, MAXPATHLEN
);
3978 strcpy (pathname
, ptr
);
3986 long item_code
= JPI$_OWNER
;
3987 unsigned long parent_id
;
3990 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
3993 vaxc$errno
= status
;
4003 return (getgid () << 16) | getuid ();
4007 sys_read (fildes
, buf
, nbyte
)
4012 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4017 sys_write (fildes
, buf
, nbyte
)
4022 register int nwrote
, rtnval
= 0;
4024 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4030 return rtnval
? rtnval
: -1;
4031 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4032 return rtnval
? rtnval
: -1;
4033 return (rtnval
+ nwrote
);
4038 * VAX/VMS VAX C RTL really loses. It insists that records
4039 * end with a newline (carriage return) character, and if they
4040 * don't it adds one (nice of it isn't it!)
4042 * Thus we do this stupidity below.
4046 sys_write (fildes
, buf
, nbytes
)
4049 unsigned int nbytes
;
4056 fstat (fildes
, &st
);
4062 /* Handle fixed-length files with carriage control. */
4063 if (st
.st_fab_rfm
== FAB$C_FIX
4064 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4066 len
= st
.st_fab_mrs
;
4067 retval
= write (fildes
, p
, min (len
, nbytes
));
4070 retval
++; /* This skips the implied carriage control */
4074 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4075 while (*e
!= '\n' && e
> p
) e
--;
4076 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4077 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4079 retval
= write (fildes
, p
, len
);
4090 /* Create file NEW copying its attributes from file OLD. If
4091 OLD is 0 or does not exist, create based on the value of
4094 /* Protection value the file should ultimately have.
4095 Set by create_copy_attrs, and use by rename_sansversions. */
4096 static unsigned short int fab_final_pro
;
4099 creat_copy_attrs (old
, new)
4102 struct FAB fab
= cc$rms_fab
;
4103 struct XABPRO xabpro
;
4104 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4105 extern int vms_stmlf_recfm
;
4109 fab
.fab$b_fac
= FAB$M_GET
;
4110 fab
.fab$l_fna
= old
;
4111 fab
.fab$b_fns
= strlen (old
);
4112 fab
.fab$l_xab
= (char *) &xabpro
;
4113 xabpro
= cc$rms_xabpro
;
4114 xabpro
.xab$l_aclbuf
= aclbuf
;
4115 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4116 /* Call $OPEN to fill in the fab & xabpro fields. */
4117 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4119 SYS$
CLOSE (&fab
, 0, 0);
4120 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4121 if (xabpro
.xab$w_acllen
> 0)
4123 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4124 /* If the acl buffer was too short, redo open with longer one.
4125 Wouldn't need to do this if there were some system imposed
4126 limit on the size of an ACL, but I can't find any such. */
4128 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4129 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4130 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4131 SYS$
CLOSE (&fab
, 0, 0);
4137 xabpro
.xab$l_aclbuf
= 0;
4142 fab
.fab$l_fna
= new;
4143 fab
.fab$b_fns
= strlen (new);
4147 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4148 fab
.fab$b_rat
= FAB$M_CR
;
4151 /* Set the file protections such that we will be able to manipulate
4152 this file. Once we are done writing and renaming it, we will set
4153 the protections back. */
4155 fab_final_pro
= xabpro
.xab$w_pro
;
4157 SYS$
SETDFPROT (0, &fab_final_pro
);
4158 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4160 /* Create the new file with either default attrs or attrs copied
4162 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4164 SYS$
CLOSE (&fab
, 0, 0);
4165 /* As this is a "replacement" for creat, return a file descriptor
4166 opened for writing. */
4167 return open (new, O_WRONLY
);
4172 #include <varargs.h>
4175 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4179 sys_creat (va_alist
)
4182 va_list list_incrementer
;
4185 int rfd
; /* related file descriptor */
4186 int fd
; /* Our new file descriptor */
4193 extern int vms_stmlf_recfm
;
4196 va_start (list_incrementer
);
4197 name
= va_arg (list_incrementer
, char *);
4198 mode
= va_arg (list_incrementer
, int);
4200 rfd
= va_arg (list_incrementer
, int);
4201 va_end (list_incrementer
);
4204 /* Use information from the related file descriptor to set record
4205 format of the newly created file. */
4206 fstat (rfd
, &st_buf
);
4207 switch (st_buf
.st_fab_rfm
)
4210 strcpy (rfm
, "rfm = fix");
4211 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4212 strcpy (rat
, "rat = ");
4213 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4215 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4216 strcat (rat
, "ftn");
4217 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4218 strcat (rat
, "prn");
4219 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4220 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4221 strcat (rat
, ", blk");
4223 strcat (rat
, "blk");
4224 return creat (name
, 0, rfm
, rat
, mrs
);
4227 strcpy (rfm
, "rfm = vfc");
4228 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4229 strcpy (rat
, "rat = ");
4230 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4232 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4233 strcat (rat
, "ftn");
4234 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4235 strcat (rat
, "prn");
4236 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4237 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4238 strcat (rat
, ", blk");
4240 strcat (rat
, "blk");
4241 return creat (name
, 0, rfm
, rat
, fsz
);
4244 strcpy (rfm
, "rfm = stm");
4248 strcpy (rfm
, "rfm = stmcr");
4252 strcpy (rfm
, "rfm = stmlf");
4256 strcpy (rfm
, "rfm = udf");
4260 strcpy (rfm
, "rfm = var");
4263 strcpy (rat
, "rat = ");
4264 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4266 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4267 strcat (rat
, "ftn");
4268 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4269 strcat (rat
, "prn");
4270 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4271 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4272 strcat (rat
, ", blk");
4274 strcat (rat
, "blk");
4278 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4279 strcpy (rat
, "rat=cr");
4281 /* Until the VAX C RTL fixes the many bugs with modes, always use
4282 mode 0 to get the user's default protection. */
4283 fd
= creat (name
, 0, rfm
, rat
);
4284 if (fd
< 0 && errno
== EEXIST
)
4286 if (unlink (name
) < 0)
4287 report_file_error ("delete", build_string (name
));
4288 fd
= creat (name
, 0, rfm
, rat
);
4294 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4295 sys_fwrite (ptr
, size
, num
, fp
)
4296 register char * ptr
;
4299 register int tot
= num
* size
;
4306 * The VMS C library routine creat actually creates a new version of an
4307 * existing file rather than truncating the old version. There are times
4308 * when this is not the desired behavior, for instance, when writing an
4309 * auto save file (you only want one version), or when you don't have
4310 * write permission in the directory containing the file (but the file
4311 * itself is writable). Hence this routine, which is equivalent to
4312 * "close (creat (fn, 0));" on Unix if fn already exists.
4318 struct FAB xfab
= cc$rms_fab
;
4319 struct RAB xrab
= cc$rms_rab
;
4322 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4323 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4324 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4325 xfab
.fab$l_fna
= fn
;
4326 xfab
.fab$b_fns
= strlen (fn
);
4327 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4329 xrab
.rab$l_fab
= &xfab
;
4331 /* This gibberish opens the file, positions to the first record, and
4332 deletes all records from there until the end of file. */
4333 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4335 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4336 (SYS$
FIND (&xrab
) & 01) == 01 &&
4337 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4348 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4349 SYSPRV or a readable SYSUAF.DAT. */
4355 * Routine to read the VMS User Authorization File and return
4356 * a specific user's record.
4359 static struct UAF retuaf
;
4362 get_uaf_name (uname
)
4369 uaf_fab
= cc$rms_fab
;
4370 uaf_rab
= cc$rms_rab
;
4371 /* initialize fab fields */
4372 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4373 uaf_fab
.fab$b_fns
= 21;
4374 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4375 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4376 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4377 /* initialize rab fields */
4378 uaf_rab
.rab$l_fab
= &uaf_fab
;
4379 /* open the User Authorization File */
4380 status
= SYS$
OPEN (&uaf_fab
);
4384 vaxc$errno
= status
;
4387 status
= SYS$
CONNECT (&uaf_rab
);
4391 vaxc$errno
= status
;
4394 /* read the requested record - index is in uname */
4395 uaf_rab
.rab$l_kbf
= uname
;
4396 uaf_rab
.rab$b_ksz
= strlen (uname
);
4397 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4398 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4399 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4400 status
= SYS$
GET (&uaf_rab
);
4404 vaxc$errno
= status
;
4407 /* close the User Authorization File */
4408 status
= SYS$
DISCONNECT (&uaf_rab
);
4412 vaxc$errno
= status
;
4415 status
= SYS$
CLOSE (&uaf_fab
);
4419 vaxc$errno
= status
;
4433 uaf_fab
= cc$rms_fab
;
4434 uaf_rab
= cc$rms_rab
;
4435 /* initialize fab fields */
4436 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4437 uaf_fab
.fab$b_fns
= 21;
4438 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4439 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4440 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4441 /* initialize rab fields */
4442 uaf_rab
.rab$l_fab
= &uaf_fab
;
4443 /* open the User Authorization File */
4444 status
= SYS$
OPEN (&uaf_fab
);
4448 vaxc$errno
= status
;
4451 status
= SYS$
CONNECT (&uaf_rab
);
4455 vaxc$errno
= status
;
4458 /* read the requested record - index is in uic */
4459 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4460 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4461 uaf_rab
.rab$b_ksz
= sizeof uic
;
4462 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4463 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4464 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4465 status
= SYS$
GET (&uaf_rab
);
4469 vaxc$errno
= status
;
4472 /* close the User Authorization File */
4473 status
= SYS$
DISCONNECT (&uaf_rab
);
4477 vaxc$errno
= status
;
4480 status
= SYS$
CLOSE (&uaf_fab
);
4484 vaxc$errno
= status
;
4490 static struct passwd retpw
;
4498 /* copy these out first because if the username is 32 chars, the next
4499 section will overwrite the first byte of the UIC */
4500 retpw
.pw_uid
= up
->uaf$w_mem
;
4501 retpw
.pw_gid
= up
->uaf$w_grp
;
4503 /* I suppose this is not the best style, to possibly overwrite one
4504 byte beyond the end of the field, but what the heck... */
4505 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4506 while (ptr
[-1] == ' ')
4509 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4511 /* the rest of these are counted ascii strings */
4512 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4513 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4514 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4515 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4516 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4517 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4518 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4519 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4523 #else /* not READ_SYSUAF */
4524 static struct passwd retpw
;
4525 #endif /* not READ_SYSUAF */
4536 unsigned char * full
;
4537 #endif /* READ_SYSUAF */
4542 if ('a' <= *ptr
&& *ptr
<= 'z')
4547 if (!(up
= get_uaf_name (name
)))
4549 return cnv_uaf_pw (up
);
4551 if (strcmp (name
, getenv ("USER")) == 0)
4553 retpw
.pw_uid
= getuid ();
4554 retpw
.pw_gid
= getgid ();
4555 strcpy (retpw
.pw_name
, name
);
4556 if (full
= egetenv ("FULLNAME"))
4557 strcpy (retpw
.pw_gecos
, full
);
4559 *retpw
.pw_gecos
= '\0';
4560 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4561 *retpw
.pw_shell
= '\0';
4566 #endif /* not READ_SYSUAF */
4576 if (!(up
= get_uaf_uic (uid
)))
4578 return cnv_uaf_pw (up
);
4580 if (uid
== sys_getuid ())
4581 return getpwnam (egetenv ("USER"));
4584 #endif /* not READ_SYSUAF */
4587 /* return total address space available to the current process. This is
4588 the sum of the current p0 size, p1 size and free page table entries
4593 unsigned long free_pages
;
4594 unsigned long frep0va
;
4595 unsigned long frep1va
;
4598 item_code
= JPI$_FREPTECNT
;
4599 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4602 vaxc$errno
= status
;
4607 item_code
= JPI$_FREP0VA
;
4608 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4611 vaxc$errno
= status
;
4614 item_code
= JPI$_FREP1VA
;
4615 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4618 vaxc$errno
= status
;
4622 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4625 define_logical_name (varname
, string
)
4629 struct dsc$descriptor_s strdsc
=
4630 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4631 struct dsc$descriptor_s envdsc
=
4632 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4633 struct dsc$descriptor_s lnmdsc
=
4634 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4636 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4639 delete_logical_name (varname
)
4642 struct dsc$descriptor_s envdsc
=
4643 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4644 struct dsc$descriptor_s lnmdsc
=
4645 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4647 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4658 error ("execvp system call not implemented");
4666 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4667 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4668 char from_esn
[NAM$C_MAXRSS
];
4669 char to_esn
[NAM$C_MAXRSS
];
4671 from_fab
.fab$l_fna
= from
;
4672 from_fab
.fab$b_fns
= strlen (from
);
4673 from_fab
.fab$l_nam
= &from_nam
;
4674 from_fab
.fab$l_fop
= FAB$M_NAM
;
4676 from_nam
.nam$l_esa
= from_esn
;
4677 from_nam
.nam$b_ess
= sizeof from_esn
;
4679 to_fab
.fab$l_fna
= to
;
4680 to_fab
.fab$b_fns
= strlen (to
);
4681 to_fab
.fab$l_nam
= &to_nam
;
4682 to_fab
.fab$l_fop
= FAB$M_NAM
;
4684 to_nam
.nam$l_esa
= to_esn
;
4685 to_nam
.nam$b_ess
= sizeof to_esn
;
4687 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4693 if (status
== RMS$_DEV
)
4697 vaxc$errno
= status
;
4702 /* This function renames a file like `rename', but it strips
4703 the version number from the "to" filename, such that the "to" file is
4704 will always be a new version. It also sets the file protection once it is
4705 finished. The protection that we will use is stored in fab_final_pro,
4706 and was set when we did a creat_copy_attrs to create the file that we
4709 We could use the chmod function, but Eunichs uses 3 bits per user category
4710 to describe the protection, and VMS uses 4 (write and delete are separate
4711 bits). To maintain portability, the VMS implementation of `chmod' wires
4712 the W and D bits together. */
4715 static struct fibdef fib
; /* We need this initialized to zero */
4716 char vms_file_written
[NAM$C_MAXRSS
];
4719 rename_sans_version (from
,to
)
4726 struct FAB to_fab
= cc$rms_fab
;
4727 struct NAM to_nam
= cc$rms_nam
;
4728 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4729 struct dsc$descriptor fib_attr
[2]
4730 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4731 char to_esn
[NAM$C_MAXRSS
];
4733 $
DESCRIPTOR (disk
,to_esn
);
4735 to_fab
.fab$l_fna
= to
;
4736 to_fab
.fab$b_fns
= strlen (to
);
4737 to_fab
.fab$l_nam
= &to_nam
;
4738 to_fab
.fab$l_fop
= FAB$M_NAM
;
4740 to_nam
.nam$l_esa
= to_esn
;
4741 to_nam
.nam$b_ess
= sizeof to_esn
;
4743 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4745 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4746 *(to_nam
.nam$l_ver
) = '\0';
4748 stat
= rename (from
, to_esn
);
4752 strcpy (vms_file_written
, to_esn
);
4754 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4755 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4757 /* Now set the file protection to the correct value */
4758 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4760 /* Copy these fields into the fib */
4761 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4762 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4763 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4765 SYS$
CLOSE (&to_fab
, 0, 0);
4767 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4770 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4771 0, 0, 0, &fib_attr
, 0);
4774 stat
= SYS$
DASSGN (chan
);
4777 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4787 unsigned short fid
[3];
4788 char esa
[NAM$C_MAXRSS
];
4791 fab
.fab$l_fop
= FAB$M_OFP
;
4792 fab
.fab$l_fna
= file
;
4793 fab
.fab$b_fns
= strlen (file
);
4794 fab
.fab$l_nam
= &nam
;
4797 nam
.nam$l_esa
= esa
;
4798 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4800 status
= SYS$
PARSE (&fab
);
4801 if ((status
& 1) == 0)
4804 vaxc$errno
= status
;
4807 status
= SYS$
SEARCH (&fab
);
4808 if ((status
& 1) == 0)
4811 vaxc$errno
= status
;
4815 fid
[0] = nam
.nam$w_fid
[0];
4816 fid
[1] = nam
.nam$w_fid
[1];
4817 fid
[2] = nam
.nam$w_fid
[2];
4819 fab
.fab$l_fna
= new;
4820 fab
.fab$b_fns
= strlen (new);
4822 status
= SYS$
PARSE (&fab
);
4823 if ((status
& 1) == 0)
4826 vaxc$errno
= status
;
4830 nam
.nam$w_fid
[0] = fid
[0];
4831 nam
.nam$w_fid
[1] = fid
[1];
4832 nam
.nam$w_fid
[2] = fid
[2];
4834 nam
.nam$l_esa
= nam
.nam$l_name
;
4835 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
4837 status
= SYS$
ENTER (&fab
);
4838 if ((status
& 1) == 0)
4841 vaxc$errno
= status
;
4851 printf ("%s not yet implemented\r\n", badfunc
);
4859 /* Arrange to return a range centered on zero. */
4860 return rand () - (1 << 30);
4871 /* Called from init_sys_modes. */
4876 /* If we're not on an HFT we shouldn't do any of this. We determine
4877 if we are on an HFT by trying to get an HFT error code. If this
4878 call fails, we're not on an HFT. */
4880 if (ioctl (0, HFQERROR
, &junk
) < 0)
4882 #else /* not IBMR2AIX */
4883 if (ioctl (0, HFQEIO
, 0) < 0)
4885 #endif /* not IBMR2AIX */
4887 /* On AIX the default hft keyboard mapping uses backspace rather than delete
4888 as the rubout key's ASCII code. Here this is changed. The bug is that
4889 there's no way to determine the old mapping, so in reset_sys_modes
4890 we need to assume that the normal map had been present. Of course, this
4891 code also doesn't help if on a terminal emulator which doesn't understand
4895 struct hfkeymap keymap
;
4897 buf
.hf_bufp
= (char *)&keymap
;
4898 buf
.hf_buflen
= sizeof (keymap
);
4899 keymap
.hf_nkeys
= 2;
4900 keymap
.hfkey
[0].hf_kpos
= 15;
4901 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4903 keymap
.hfkey
[0].hf_keyidh
= '<';
4904 #else /* not IBMR2AIX */
4905 keymap
.hfkey
[0].hf_page
= '<';
4906 #endif /* not IBMR2AIX */
4907 keymap
.hfkey
[0].hf_char
= 127;
4908 keymap
.hfkey
[1].hf_kpos
= 15;
4909 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4911 keymap
.hfkey
[1].hf_keyidh
= '<';
4912 #else /* not IBMR2AIX */
4913 keymap
.hfkey
[1].hf_page
= '<';
4914 #endif /* not IBMR2AIX */
4915 keymap
.hfkey
[1].hf_char
= 127;
4916 hftctl (0, HFSKBD
, &buf
);
4918 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
4920 line_ins_del_ok
= char_ins_del_ok
= 0;
4923 /* Reset the rubout key to backspace. */
4928 struct hfkeymap keymap
;
4932 if (ioctl (0, HFQERROR
, &junk
) < 0)
4934 #else /* not IBMR2AIX */
4935 if (ioctl (0, HFQEIO
, 0) < 0)
4937 #endif /* not IBMR2AIX */
4939 buf
.hf_bufp
= (char *)&keymap
;
4940 buf
.hf_buflen
= sizeof (keymap
);
4941 keymap
.hf_nkeys
= 2;
4942 keymap
.hfkey
[0].hf_kpos
= 15;
4943 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
4945 keymap
.hfkey
[0].hf_keyidh
= '<';
4946 #else /* not IBMR2AIX */
4947 keymap
.hfkey
[0].hf_page
= '<';
4948 #endif /* not IBMR2AIX */
4949 keymap
.hfkey
[0].hf_char
= 8;
4950 keymap
.hfkey
[1].hf_kpos
= 15;
4951 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
4953 keymap
.hfkey
[1].hf_keyidh
= '<';
4954 #else /* not IBMR2AIX */
4955 keymap
.hfkey
[1].hf_page
= '<';
4956 #endif /* not IBMR2AIX */
4957 keymap
.hfkey
[1].hf_char
= 8;
4958 hftctl (0, HFSKBD
, &buf
);
4965 /* These are included on Sunos 4.1 when we do not use shared libraries.
4966 X11 libraries may refer to these functions but (we hope) do not
4967 actually call them. */
4987 #endif /* USE_DL_STUBS */
4996 register int length
;
5000 long max_str
= 65535;
5002 while (length
> max_str
) {
5003 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5008 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5010 while (length
-- > 0)
5012 #endif /* not VMS */
5015 #endif /* no bzero */
5016 #endif /* BSTRING */
5018 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5021 /* Saying `void' requires a declaration, above, where bcopy is used
5022 and that declaration causes pain for systems where bcopy is a macro. */
5023 bcopy (b1
, b2
, length
)
5026 register int length
;
5029 long max_str
= 65535;
5031 while (length
> max_str
) {
5032 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5038 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5040 while (length
-- > 0)
5042 #endif /* not VMS */
5044 #endif /* (defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5049 bcmp (b1
, b2
, length
) /* This could be a macro! */
5052 register int length
;
5055 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5056 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5058 return STR$
COMPARE (&src1
, &src2
);
5060 while (length
-- > 0)
5065 #endif /* not VMS */
5067 #endif /* no bcmp */
5068 #endif /* not BSTRING */