1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 86,87,88,93,94,95, 1999, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
32 /* Including stdlib.h isn't necessarily enough to get srandom
33 declared, e.g. without __USE_XOPEN_EXTENDED with glibc 2. */
35 #if 0 /* It turns out that defining _OSF_SOURCE in osf5-0.h gets
36 random prototyped as returning `int'. It looks to me as
37 though the best way to DTRT is to prefer the rand48 functions
38 (per libc.info). -- fx */
39 extern long int random
P_ ((void));
41 #if 0 /* Don't prototype srandom; it takes an unsigned argument on
42 some systems, and an unsigned long on others, like FreeBSD
44 extern void srandom
P_ ((unsigned int));
48 #include "blockinput.h"
52 /* It is essential to include stdlib.h so that this file picks up
53 the correct definitions of rand, srand, and RAND_MAX.
54 Otherwise random numbers will not work correctly. */
58 /* Nonzero means delete a process right away if it exits (process.c). */
59 static int delete_exited_processes
;
65 #define write sys_write
70 #endif /* not WINDOWSNT */
72 /* Does anyone other than VMS need this? */
74 #define sys_fwrite fwrite
80 #include <sys/types.h>
84 /* Get _POSIX_VDISABLE, if it is available. */
94 #if !defined (USG) || defined (BSD_PGRPS)
96 #define setpgrp setpgid
100 /* Get SI_SRPC_DOMAIN, if it is available. */
101 #ifdef HAVE_SYS_SYSTEMINFO_H
102 #include <sys/systeminfo.h>
105 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
109 #include <sys/param.h>
113 extern unsigned start
__asm__ ("start");
135 #include <sys/file.h>
143 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
147 #ifdef BSD_SYSTEM /* avoid writing defined (BSD_SYSTEM) || defined (USG)
148 because the vms compiler doesn't grok `defined' */
156 #endif /* not 4.1 bsd */
159 #include <sys/ioctl.h>
165 #ifdef BROKEN_TIOCGWINSZ
170 #if defined (USG) || defined (DGUX)
171 #include <sys/utsname.h>
172 #ifndef MEMORY_IN_STRING_H
175 #if defined (TIOCGWINSZ) || defined (ISC4_0)
177 #include <sys/sioctl.h>
180 #include <sys/stream.h>
181 #include <sys/ptem.h>
183 #endif /* TIOCGWINSZ or ISC4_0 */
184 #endif /* USG or DGUX */
186 extern int quit_char
;
188 #include "keyboard.h"
191 #include "termhooks.h"
192 #include "termchar.h"
193 #include "termopts.h"
194 #include "dispextern.h"
199 /* In process.h which conflicts with the local copy. */
201 int _CRTAPI1
_spawnlp (int, const char *, const char *, ...);
202 int _CRTAPI1
_getpid (void);
205 #ifdef NONSYSTEM_DIR_LIBRARY
207 #endif /* NONSYSTEM_DIR_LIBRARY */
209 #include "syssignal.h"
216 #ifndef HAVE_STRUCT_UTIMBUF
217 /* We want to use utime rather than utimes, but we couldn't find the
218 structure declaration. We'll use the traditional one. */
226 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
232 #define LNOFLSH 0100000
235 static int baud_convert
[] =
240 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
241 1800, 2400, 4800, 9600, 19200, 38400
248 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
250 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
258 /* The file descriptor for Emacs's input terminal.
259 Under Unix, this is normally zero except when using X;
260 under VMS, we place the input channel number here. */
263 void croak
P_ ((char *));
270 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
272 SIGMASKTYPE sigprocmask_set
;
275 /* Specify a different file descriptor for further input operations. */
284 /* Discard pending input on descriptor input_fd. */
290 struct emacs_tty buf
;
295 /* Discarding input is not safe when the input could contain
296 replies from the X server. So don't do it. */
297 if (read_socket_hook
)
302 SYS$
QIOW (0, input_fd
, IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
303 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
309 ioctl (input_fd
, TIOCFLUSH
, &zero
);
311 #else /* not Apollo */
312 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
313 while (dos_keyread () != -1)
315 #else /* not MSDOS */
316 EMACS_GET_TTY (input_fd
, &buf
);
317 EMACS_SET_TTY (input_fd
, &buf
, 0);
318 #endif /* not MSDOS */
319 #endif /* not Apollo */
321 #endif /* not WINDOWSNT */
326 /* Arrange for character C to be read as the next input from
333 if (read_socket_hook
)
336 /* Should perhaps error if in batch mode */
338 ioctl (input_fd
, TIOCSTI
, &c
);
339 #else /* no TIOCSTI */
340 error ("Cannot stuff terminal input characters in this version of Unix");
341 #endif /* no TIOCSTI */
353 #ifdef INIT_BAUD_RATE
358 #else /* not DOS_NT */
362 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &sg
, 0, 0,
363 &sg
.class, 12, 0, 0, 0, 0 );
364 emacs_ospeed
= sg
.xmit_baud
;
370 tcgetattr (input_fd
, &sg
);
371 emacs_ospeed
= cfgetospeed (&sg
);
372 #if defined (USE_GETOBAUD) && defined (getobaud)
373 /* m88k-motorola-sysv3 needs this (ghazi@noc.rutgers.edu) 9/1/94. */
374 if (emacs_ospeed
== 0)
375 emacs_ospeed
= getobaud (sg
.c_cflag
);
377 #else /* neither VMS nor TERMIOS */
383 tcgetattr (input_fd
, &sg
);
385 ioctl (input_fd
, TCGETA
, &sg
);
387 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
388 #else /* neither VMS nor TERMIOS nor TERMIO */
391 sg
.sg_ospeed
= B9600
;
392 if (ioctl (input_fd
, TIOCGETP
, &sg
) < 0)
394 emacs_ospeed
= sg
.sg_ospeed
;
395 #endif /* not HAVE_TERMIO */
396 #endif /* not HAVE_TERMIOS */
398 #endif /* not DOS_NT */
399 #endif /* not INIT_BAUD_RATE */
402 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
403 ? baud_convert
[emacs_ospeed
] : 9600);
410 set_exclusive_use (fd
)
414 ioctl (fd
, FIOCLEX
, 0);
416 /* Ok to do nothing if this feature does not exist */
421 wait_without_blocking ()
424 wait3 (0, WNOHANG
| WUNTRACED
, 0);
426 croak ("wait_without_blocking");
428 synch_process_alive
= 0;
431 #endif /* not subprocesses */
433 int wait_debugging
; /* Set nonzero to make following function work under dbx
434 (at least for bsd). */
437 wait_for_termination_signal ()
440 /* Wait for subprocess with process id `pid' to terminate and
441 make sure it will get eliminated (not remain forever as a zombie) */
444 wait_for_termination (pid
)
453 status
= SYS$
FORCEX (&pid
, 0, 0);
456 #if defined (BSD_SYSTEM) || (defined (HPUX) && !defined (HPUX_5))
457 /* Note that kill returns -1 even if the process is just a zombie now.
458 But inevitably a SIGCHLD interrupt should be generated
459 and child_sig will do wait3 and make the process go away. */
460 /* There is some indication that there is a bug involved with
461 termination of subprocesses, perhaps involving a kernel bug too,
462 but no idea what it is. Just as a hunch we signal SIGCHLD to see
463 if that causes the problem to go away or get worse. */
464 sigsetmask (sigmask (SIGCHLD
));
465 if (0 > kill (pid
, 0))
467 sigsetmask (SIGEMPTYMASK
);
468 kill (getpid (), SIGCHLD
);
474 sigpause (SIGEMPTYMASK
);
475 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
476 #if defined (UNIPLUS)
477 if (0 > kill (pid
, 0))
480 #else /* neither BSD_SYSTEM nor UNIPLUS: random sysV */
481 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
482 sigblock (sigmask (SIGCHLD
));
484 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
486 sigunblock (sigmask (SIGCHLD
));
490 sigsuspend (&empty_mask
);
491 #else /* not POSIX_SIGNALS */
492 #ifdef HAVE_SYSV_SIGPAUSE
494 if (0 > kill (pid
, 0))
500 #else /* not HAVE_SYSV_SIGPAUSE */
504 #else /* not WINDOWSNT */
505 if (0 > kill (pid
, 0))
507 /* Using sleep instead of pause avoids timing error.
508 If the inferior dies just before the sleep,
509 we lose just one second. */
511 #endif /* not WINDOWSNT */
512 #endif /* not HAVE_SYSV_SIGPAUSE */
513 #endif /* not POSIX_SIGNALS */
514 #endif /* not UNIPLUS */
515 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
517 #else /* not subprocesses */
520 #else /* not __DJGPP__ > 1 */
522 if (kill (pid
, 0) < 0)
528 if (status
== pid
|| status
== -1)
531 #endif /* not __DJGPP__ > 1*/
532 #endif /* not subprocesses */
539 * flush any pending output
540 * (may flush input as well; it does not matter the way we use it)
544 flush_pending_output (channel
)
548 /* If we try this, we get hit with SIGTTIN, because
549 the child's tty belongs to the child's pgrp. */
552 ioctl (channel
, TCFLSH
, 1);
556 /* 3rd arg should be ignored
557 but some 4.2 kernels actually want the address of an int
558 and nonzero means something different. */
559 ioctl (channel
, TIOCFLUSH
, &zero
);
566 /* Set up the terminal at the other end of a pseudo-terminal that
567 we will be controlling an inferior through.
568 It should not echo or do line-editing, since that is done
569 in Emacs. No padding needed for insertion into an Emacs buffer. */
572 child_setup_tty (out
)
578 EMACS_GET_TTY (out
, &s
);
580 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
581 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
582 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
584 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
585 /* No output delays */
587 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
588 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
589 #if 0 /* This causes bugs in (for instance) telnet to certain sites. */
590 s
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
591 #ifdef INLCR /* Just being cautious, since I can't check how
592 widespread INLCR is--rms. */
593 s
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
597 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
600 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
603 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
605 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
606 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
608 /* Said to be unnecessary: */
609 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
610 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
613 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
614 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
615 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
616 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
619 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
623 /* AIX enhanced edit loses NULs, so disable it */
626 s
.main
.c_iflag
&= ~ASCEDIT
;
628 /* Also, PTY overloads NUL and BREAK.
629 don't ignore break, but don't signal either, so it looks like NUL. */
630 s
.main
.c_iflag
&= ~IGNBRK
;
631 s
.main
.c_iflag
&= ~BRKINT
;
632 /* QUIT and INTR work better as signals, so disable character forms */
633 s
.main
.c_cc
[VINTR
] = 0377;
634 #ifdef SIGNALS_VIA_CHARACTERS
635 /* the QUIT and INTR character are used in process_send_signal
636 so set them here to something useful. */
637 if (s
.main
.c_cc
[VQUIT
] == 0377)
638 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
639 if (s
.main
.c_cc
[VINTR
] == 0377)
640 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
641 #else /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
642 /* QUIT and INTR work better as signals, so disable character forms */
643 s
.main
.c_cc
[VQUIT
] = 0377;
644 s
.main
.c_cc
[VINTR
] = 0377;
645 s
.main
.c_lflag
&= ~ISIG
;
646 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
647 s
.main
.c_cc
[VEOL
] = 0377;
648 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
651 #else /* not HAVE_TERMIO */
653 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
655 s
.main
.sg_flags
|= LPASS8
;
656 s
.main
.sg_erase
= 0377;
657 s
.main
.sg_kill
= 0377;
658 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
660 #endif /* not HAVE_TERMIO */
662 EMACS_SET_TTY (out
, &s
, 0);
671 ioctl (out
, FIOASYNC
, &zero
);
674 #endif /* not DOS_NT */
678 #endif /* subprocesses */
680 /* Record a signal code and the handler for it. */
684 SIGTYPE (*handler
) P_ ((int));
687 static void save_signal_handlers
P_ ((struct save_signal
*));
688 static void restore_signal_handlers
P_ ((struct save_signal
*));
690 /* Suspend the Emacs process; give terminal to its superior. */
696 /* "Foster" parentage allows emacs to return to a subprocess that attached
697 to the current emacs as a cheaper than starting a whole new process. This
698 is set up by KEPTEDITOR.COM. */
699 unsigned long parent_id
, foster_parent_id
;
702 fpid_string
= getenv ("EMACS_PARENT_PID");
703 if (fpid_string
!= NULL
)
705 sscanf (fpid_string
, "%x", &foster_parent_id
);
706 if (foster_parent_id
!= 0)
707 parent_id
= foster_parent_id
;
709 parent_id
= getppid ();
712 parent_id
= getppid ();
714 xfree (fpid_string
); /* On VMS, this was malloc'd */
716 if (parent_id
&& parent_id
!= 0xffffffff)
718 SIGTYPE (*oldsig
)() = (int) signal (SIGINT
, SIG_IGN
);
719 int status
= LIB$
ATTACH (&parent_id
) & 1;
720 signal (SIGINT
, oldsig
);
729 d_prompt
.l
= sizeof ("Emacs: "); /* Our special prompt */
730 d_prompt
.a
= "Emacs: "; /* Just a reminder */
731 LIB$
SPAWN (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, &d_prompt
, 0);
736 #if defined (SIGTSTP) && !defined (MSDOS)
739 int pgrp
= EMACS_GETPGRP (0);
740 EMACS_KILLPG (pgrp
, SIGTSTP
);
743 #else /* No SIGTSTP */
744 #ifdef USG_JOBCTRL /* If you don't know what this is don't mess with it */
745 ptrace (0, 0, 0, 0); /* set for ptrace - caught by csh */
746 kill (getpid (), SIGQUIT
);
748 #else /* No SIGTSTP or USG_JOBCTRL */
750 /* On a system where suspending is not implemented,
751 instead fork a subshell and let it talk directly to the terminal
755 #endif /* no USG_JOBCTRL */
756 #endif /* no SIGTSTP */
760 /* Fork a subshell. */
767 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
769 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
772 struct save_signal saved_handlers
[5];
774 unsigned char *str
= 0;
777 saved_handlers
[0].code
= SIGINT
;
778 saved_handlers
[1].code
= SIGQUIT
;
779 saved_handlers
[2].code
= SIGTERM
;
781 saved_handlers
[3].code
= SIGIO
;
782 saved_handlers
[4].code
= 0;
784 saved_handlers
[3].code
= 0;
787 /* Mentioning current_buffer->buffer would mean including buffer.h,
788 which somehow wedges the hp compiler. So instead... */
790 dir
= intern ("default-directory");
791 if (NILP (Fboundp (dir
)))
793 dir
= Fsymbol_value (dir
);
797 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
798 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
800 bcopy (SDATA (dir
), str
, len
);
801 if (str
[len
- 1] != '/') str
[len
++] = '/';
808 save_signal_handlers (saved_handlers
);
809 synch_process_alive
= 1;
810 #endif /* __DJGPP__ > 1 */
814 error ("Can't spawn subshell");
821 #ifdef DOS_NT /* MW, Aug 1993 */
824 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
827 sh
= (char *) egetenv ("SHELL");
831 /* Use our buffer's default directory for the subshell. */
833 chdir ((char *) str
);
836 close_process_descs (); /* Close Emacs's pipes/ptys */
839 #ifdef SET_EMACS_PRIORITY
841 extern EMACS_INT emacs_priority
;
843 if (emacs_priority
< 0)
844 nice (-emacs_priority
);
848 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
850 char *epwd
= getenv ("PWD");
851 char old_pwd
[MAXPATHLEN
+1+4];
853 /* If PWD is set, pass it with corrected value. */
856 strcpy (old_pwd
, epwd
);
857 if (str
[len
- 1] == '/')
859 setenv ("PWD", str
, 1);
864 putenv (old_pwd
); /* restore previous value */
866 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
868 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
870 #else /* not MSDOS */
872 /* Waits for process completion */
873 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
876 write (1, "Can't execute subshell", 22);
877 #else /* not WINDOWSNT */
879 write (1, "Can't execute subshell", 22);
881 #endif /* not WINDOWSNT */
882 #endif /* not MSDOS */
885 /* Do this now if we did not do it before. */
886 #if !defined (MSDOS) || __DJGPP__ == 1
887 save_signal_handlers (saved_handlers
);
888 synch_process_alive
= 1;
892 wait_for_termination (pid
);
894 restore_signal_handlers (saved_handlers
);
895 synch_process_alive
= 0;
898 #endif /* !MAC_OS8 */
901 save_signal_handlers (saved_handlers
)
902 struct save_signal
*saved_handlers
;
904 while (saved_handlers
->code
)
906 saved_handlers
->handler
907 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
913 restore_signal_handlers (saved_handlers
)
914 struct save_signal
*saved_handlers
;
916 while (saved_handlers
->code
)
918 signal (saved_handlers
->code
, saved_handlers
->handler
);
932 old_fcntl_flags
= fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
933 fcntl (fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
935 interrupts_deferred
= 0;
944 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
949 if (read_socket_hook
)
953 sigunblock (sigmask (SIGWINCH
));
955 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
| FASYNC
);
957 interrupts_deferred
= 0;
963 if (read_socket_hook
)
967 sigblock (sigmask (SIGWINCH
));
969 fcntl (input_fd
, F_SETFL
, old_fcntl_flags
);
970 interrupts_deferred
= 1;
973 #else /* no FASYNC */
974 #ifdef STRIDE /* Stride doesn't have FASYNC - use FIOASYNC */
981 if (read_socket_hook
)
984 ioctl (input_fd
, FIOASYNC
, &on
);
985 interrupts_deferred
= 0;
993 if (read_socket_hook
)
996 ioctl (input_fd
, FIOASYNC
, &off
);
997 interrupts_deferred
= 1;
1000 #else /* not FASYNC, not STRIDE */
1004 #include <termios.h>
1012 if (read_socket_hook
)
1016 sigaddset (&st
, SIGIO
);
1017 ioctl (input_fd
, FIOASYNC
, &on
);
1018 interrupts_deferred
= 0;
1019 sigprocmask (SIG_UNBLOCK
, &st
, (sigset_t
*)0);
1027 if (read_socket_hook
)
1030 ioctl (input_fd
, FIOASYNC
, &off
);
1031 interrupts_deferred
= 1;
1034 #else /* ! _CX_UX */
1039 if (read_socket_hook
)
1042 croak ("request_sigio");
1048 if (read_socket_hook
)
1051 croak ("unrequest_sigio");
1057 #endif /* F_SETFL */
1059 /* Saving and restoring the process group of Emacs's terminal. */
1063 /* The process group of which Emacs was a member when it initially
1066 If Emacs was in its own process group (i.e. inherited_pgroup ==
1067 getpid ()), then we know we're running under a shell with job
1068 control (Emacs would never be run as part of a pipeline).
1071 If Emacs was not in its own process group, then we know we're
1072 running under a shell (or a caller) that doesn't know how to
1073 separate itself from Emacs (like sh). Emacs must be in its own
1074 process group in order to receive SIGIO correctly. In this
1075 situation, we put ourselves in our own pgroup, forcibly set the
1076 tty's pgroup to our pgroup, and make sure to restore and reinstate
1077 the tty's pgroup just like any other terminal setting. If
1078 inherited_group was not the tty's pgroup, then we'll get a
1079 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1080 it goes foreground in the future, which is what should happen. */
1081 int inherited_pgroup
;
1083 /* Split off the foreground process group to Emacs alone.
1084 When we are in the foreground, but not started in our own process
1085 group, redirect the TTY to point to our own process group. We need
1086 to be in our own process group to receive SIGIO properly. */
1088 narrow_foreground_group ()
1092 setpgrp (0, inherited_pgroup
);
1093 if (inherited_pgroup
!= me
)
1094 EMACS_SET_TTY_PGRP (input_fd
, &me
);
1098 /* Set the tty to our original foreground group. */
1100 widen_foreground_group ()
1102 if (inherited_pgroup
!= getpid ())
1103 EMACS_SET_TTY_PGRP (input_fd
, &inherited_pgroup
);
1104 setpgrp (0, inherited_pgroup
);
1107 #endif /* BSD_PGRPS */
1109 /* Getting and setting emacs_tty structures. */
1111 /* Set *TC to the parameters associated with the terminal FD.
1112 Return zero if all's well, or -1 if we ran into an error we
1113 couldn't deal with. */
1115 emacs_get_tty (fd
, settings
)
1117 struct emacs_tty
*settings
;
1119 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1121 /* We have those nifty POSIX tcmumbleattr functions. */
1122 bzero (&settings
->main
, sizeof (settings
->main
));
1123 if (tcgetattr (fd
, &settings
->main
) < 0)
1128 /* The SYSV-style interface? */
1129 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1134 /* Vehemently Monstrous System? :-) */
1135 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1136 &settings
->main
.class, 12, 0, 0, 0, 0)
1142 /* I give up - I hope you have the BSD ioctls. */
1143 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1145 #endif /* not DOS_NT */
1150 /* Suivant - Do we have to get struct ltchars data? */
1152 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1156 /* How about a struct tchars and a wordful of lmode bits? */
1158 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1159 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1163 /* We have survived the tempest. */
1168 /* Set the parameters of the tty on FD according to the contents of
1169 *SETTINGS. If FLUSHP is non-zero, we discard input.
1170 Return 0 if all went well, and -1 if anything failed. */
1173 emacs_set_tty (fd
, settings
, flushp
)
1175 struct emacs_tty
*settings
;
1178 /* Set the primary parameters - baud rate, character size, etcetera. */
1181 /* We have those nifty POSIX tcmumbleattr functions.
1182 William J. Smith <wjs@wiis.wang.com> writes:
1183 "POSIX 1003.1 defines tcsetattr to return success if it was
1184 able to perform any of the requested actions, even if some
1185 of the requested actions could not be performed.
1186 We must read settings back to ensure tty setup properly.
1187 AIX requires this to keep tty from hanging occasionally." */
1188 /* This make sure that we don't loop indefinitely in here. */
1189 for (i
= 0 ; i
< 10 ; i
++)
1190 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1201 bzero (&new, sizeof (new));
1202 /* Get the current settings, and see if they're what we asked for. */
1203 tcgetattr (fd
, &new);
1204 /* We cannot use memcmp on the whole structure here because under
1205 * aix386 the termios structure has some reserved field that may
1208 if ( new.c_iflag
== settings
->main
.c_iflag
1209 && new.c_oflag
== settings
->main
.c_oflag
1210 && new.c_cflag
== settings
->main
.c_cflag
1211 && new.c_lflag
== settings
->main
.c_lflag
1212 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1220 /* The SYSV-style interface? */
1221 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1226 /* Vehemently Monstrous System? :-) */
1227 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1228 &settings
->main
.class, 12, 0, 0, 0, 0)
1234 /* I give up - I hope you have the BSD ioctls. */
1235 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1237 #endif /* not DOS_NT */
1243 /* Suivant - Do we have to get struct ltchars data? */
1245 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1249 /* How about a struct tchars and a wordful of lmode bits? */
1251 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1252 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1256 /* We have survived the tempest. */
1261 /* The initial tty mode bits */
1262 struct emacs_tty old_tty
;
1264 /* 1 if we have been through init_sys_modes. */
1267 /* 1 if outer tty status has been recorded. */
1271 /* BSD 4.1 needs to keep track of the lmode bits in order to start
1276 #ifndef F_SETOWN_BUG
1278 int old_fcntl_owner
;
1279 #endif /* F_SETOWN */
1280 #endif /* F_SETOWN_BUG */
1282 /* This may also be defined in stdio,
1283 but if so, this does no harm,
1284 and using the same name avoids wasting the other one's space. */
1287 extern char *_sobuf
;
1289 #if defined (USG) || defined (DGUX)
1290 unsigned char _sobuf
[BUFSIZ
+8];
1292 char _sobuf
[BUFSIZ
];
1297 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1300 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1306 struct emacs_tty tty
;
1309 /* cus-start.el complains if delete-exited-processes is not defined */
1310 #ifndef subprocesses
1311 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes
,
1312 doc
: /* *Non-nil means delete processes immediately when they exit.
1313 nil means don't delete them until `list-processes' is run. */);
1314 delete_exited_processes
= 0;
1316 #endif /* MAC_OS8 */
1320 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1321 extern int (*interrupt_signal
) ();
1325 Vtty_erase_char
= Qnil
;
1332 input_ef
= get_kbd_event_flag ();
1333 /* LIB$GET_EF (&input_ef); */
1334 SYS$
CLREF (input_ef
);
1335 waiting_for_ast
= 0;
1337 timer_ef
= get_timer_event_flag ();
1338 /* LIB$GET_EF (&timer_ef); */
1339 SYS$
CLREF (timer_ef
);
1343 LIB$
GET_EF (&process_ef
);
1344 SYS$
CLREF (process_ef
);
1346 if (input_ef
/ 32 != process_ef
/ 32)
1347 croak ("Input and process event flags in different clusters.");
1349 if (input_ef
/ 32 != timer_ef
/ 32)
1350 croak ("Input and timer event flags in different clusters.");
1352 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1353 ((unsigned) 1 << (process_ef
% 32));
1355 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1356 ((unsigned) 1 << (timer_ef
% 32));
1358 sys_access_reinit ();
1360 #endif /* not VMS */
1363 if (! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1364 narrow_foreground_group ();
1367 #ifdef HAVE_WINDOW_SYSTEM
1368 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1369 needs the initialization code below. */
1370 if (!read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1373 EMACS_GET_TTY (input_fd
, &old_tty
);
1379 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1380 XSETINT (Vtty_erase_char
, old_tty
.main
.c_cc
[VERASE
]);
1383 /* This allows meta to be sent on 8th bit. */
1384 tty
.main
.c_iflag
&= ~INPCK
; /* don't check input for parity */
1386 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1387 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1388 #ifdef INLCR /* I'm just being cautious,
1389 since I can't check how widespread INLCR is--rms. */
1390 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1393 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1395 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1396 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1398 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1400 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1403 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1405 tty
.main
.c_iflag
&= ~IXANY
;
1409 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1410 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1412 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1416 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1417 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1420 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1421 /* Set up C-g for both SIGQUIT and SIGINT.
1422 We don't know which we will get, but we handle both alike
1423 so which one it really gives us does not matter. */
1424 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1425 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1426 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1428 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1432 #if defined (mips) || defined (HAVE_TCATTR)
1434 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1437 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1438 #endif /* V_DSUSP */
1439 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1440 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1443 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1446 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1447 #endif /* VREPRINT */
1449 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1450 #endif /* VWERASE */
1452 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1453 #endif /* VDISCARD */
1458 tty
.main
.c_cc
[VSTART
] = '\021';
1461 tty
.main
.c_cc
[VSTOP
] = '\023';
1467 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1470 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1473 #endif /* mips or HAVE_TCATTR */
1475 #ifdef SET_LINE_DISCIPLINE
1476 /* Need to explicitly request TERMIODISC line discipline or
1477 Ultrix's termios does not work correctly. */
1478 tty
.main
.c_line
= SET_LINE_DISCIPLINE
;
1482 /* AIX enhanced edit loses NULs, so disable it. */
1483 tty
.main
.c_line
= 0;
1484 tty
.main
.c_iflag
&= ~ASCEDIT
;
1486 tty
.main
.c_cc
[VSTRT
] = 255;
1487 tty
.main
.c_cc
[VSTOP
] = 255;
1488 tty
.main
.c_cc
[VSUSP
] = 255;
1489 tty
.main
.c_cc
[VDSUSP
] = 255;
1490 #endif /* IBMR2AIX */
1494 tty
.main
.c_cc
[VSTART
] = '\021';
1497 tty
.main
.c_cc
[VSTOP
] = '\023';
1500 /* Also, PTY overloads NUL and BREAK.
1501 don't ignore break, but don't signal either, so it looks like NUL.
1502 This really serves a purpose only if running in an XTERM window
1503 or via TELNET or the like, but does no harm elsewhere. */
1504 tty
.main
.c_iflag
&= ~IGNBRK
;
1505 tty
.main
.c_iflag
&= ~BRKINT
;
1507 #else /* if not HAVE_TERMIO */
1509 tty
.main
.tt_char
|= TT$M_NOECHO
;
1511 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1513 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1515 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1516 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1517 #else /* not VMS (BSD, that is) */
1519 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1520 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1522 tty
.main
.sg_flags
|= ANYP
;
1523 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1524 #endif /* not DOS_NT */
1525 #endif /* not VMS (BSD, that is) */
1526 #endif /* not HAVE_TERMIO */
1528 /* If going to use CBREAK mode, we must request C-g to interrupt
1529 and turn off start and stop chars, etc. If not going to use
1530 CBREAK mode, do this anyway so as to turn off local flow
1531 control for user coming over network on 4.2; in this case,
1532 only t_stopc and t_startc really matter. */
1535 /* Note: if not using CBREAK mode, it makes no difference how we
1537 tty
.tchars
= new_tchars
;
1538 tty
.tchars
.t_intrc
= quit_char
;
1541 tty
.tchars
.t_startc
= '\021';
1542 tty
.tchars
.t_stopc
= '\023';
1545 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| old_tty
.lmode
;
1547 /* Under Ultrix 4.2a, leaving this out doesn't seem to hurt
1548 anything, and leaving it in breaks the meta key. Go figure. */
1549 tty
.lmode
&= ~LLITOUT
;
1556 #endif /* HAVE_TCHARS */
1557 #endif /* not HAVE_TERMIO */
1560 tty
.ltchars
= new_ltchars
;
1561 #endif /* HAVE_LTCHARS */
1562 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1564 internal_terminal_init ();
1568 EMACS_SET_TTY (input_fd
, &tty
, 0);
1570 /* This code added to insure that, if flow-control is not to be used,
1571 we have an unlocked terminal at the start. */
1574 if (!flow_control
) ioctl (input_fd
, TCXONC
, 1);
1578 if (!flow_control
) ioctl (input_fd
, TIOCSTART
, 0);
1582 #if defined (HAVE_TERMIOS) || defined (HPUX9)
1584 if (!flow_control
) tcflow (input_fd
, TCOON
);
1592 /* IBM's HFT device usually thinks a ^J should be LF/CR. We need it
1593 to be only LF. This is the way that is done. */
1596 if (ioctl (1, HFTGETID
, &tty
) != -1)
1597 write (1, "\033[20l", 5);
1603 /* Appears to do nothing when in PASTHRU mode.
1604 SYS$QIOW (0, input_fd, IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1605 interrupt_signal, oob_chars, 0, 0, 0, 0);
1607 queue_kbd_input (0);
1612 #ifndef F_SETOWN_BUG
1613 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1615 && ! read_socket_hook
&& EQ (Vwindow_system
, Qnil
))
1617 old_fcntl_owner
= fcntl (input_fd
, F_GETOWN
, 0);
1618 fcntl (input_fd
, F_SETOWN
, getpid ());
1619 init_sigio (input_fd
);
1621 #endif /* F_GETOWN */
1622 #endif /* F_SETOWN_BUG */
1623 #endif /* F_SETFL */
1626 if (interrupt_input
)
1627 init_sigio (input_fd
);
1630 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1634 /* This symbol is defined on recent USG systems.
1635 Someone says without this call USG won't really buffer the file
1636 even with a call to setbuf. */
1637 setvbuf (stdout
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1639 setbuf (stdout
, (char *) _sobuf
);
1641 #ifdef HAVE_WINDOW_SYSTEM
1642 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1643 needs the initialization code below. */
1644 if (EQ (Vwindow_system
, Qnil
)
1646 /* When running in tty mode on NT/Win95, we have a read_socket
1647 hook, but still need the rest of the initialization code below. */
1648 && (! read_socket_hook
)
1652 set_terminal_modes ();
1655 && FRAMEP (Vterminal_frame
)
1656 && FRAME_TERMCAP_P (XFRAME (Vterminal_frame
)))
1657 init_frame_faces (XFRAME (Vterminal_frame
));
1659 if (term_initted
&& no_redraw_on_reenter
)
1661 if (display_completed
)
1662 direct_output_forward_char (0);
1667 if (FRAMEP (Vterminal_frame
))
1668 FRAME_GARBAGED_P (XFRAME (Vterminal_frame
)) = 1;
1674 /* Return nonzero if safe to use tabs in output.
1675 At the time this is called, init_sys_modes has not been done yet. */
1680 struct emacs_tty tty
;
1682 EMACS_GET_TTY (input_fd
, &tty
);
1683 return EMACS_TTY_TABS_OK (&tty
);
1686 /* Get terminal size from system.
1687 Store number of lines into *HEIGHTP and width into *WIDTHP.
1688 We store 0 if there's no valid information. */
1691 get_frame_size (widthp
, heightp
)
1692 int *widthp
, *heightp
;
1698 struct winsize size
;
1700 if (ioctl (input_fd
, TIOCGWINSZ
, &size
) == -1)
1701 *widthp
= *heightp
= 0;
1704 *widthp
= size
.ws_col
;
1705 *heightp
= size
.ws_row
;
1711 /* SunOS - style. */
1712 struct ttysize size
;
1714 if (ioctl (input_fd
, TIOCGSIZE
, &size
) == -1)
1715 *widthp
= *heightp
= 0;
1718 *widthp
= size
.ts_cols
;
1719 *heightp
= size
.ts_lines
;
1725 struct sensemode tty
;
1727 SYS$
QIOW (0, input_fd
, IO$_SENSEMODE
, &tty
, 0, 0,
1728 &tty
.class, 12, 0, 0, 0, 0);
1729 *widthp
= tty
.scr_wid
;
1730 *heightp
= tty
.scr_len
;
1734 *widthp
= ScreenCols ();
1735 *heightp
= ScreenRows ();
1736 #else /* system doesn't know size */
1741 #endif /* not VMS */
1742 #endif /* not SunOS-style */
1743 #endif /* not BSD-style */
1746 /* Set the logical window size associated with descriptor FD
1747 to HEIGHT and WIDTH. This is used mainly with ptys. */
1750 set_window_size (fd
, height
, width
)
1751 int fd
, height
, width
;
1756 struct winsize size
;
1757 size
.ws_row
= height
;
1758 size
.ws_col
= width
;
1760 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1761 return 0; /* error */
1768 /* SunOS - style. */
1769 struct ttysize size
;
1770 size
.ts_lines
= height
;
1771 size
.ts_cols
= width
;
1773 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1779 #endif /* not SunOS-style */
1780 #endif /* not BSD-style */
1784 /* Prepare the terminal for exiting Emacs; move the cursor to the
1785 bottom of the frame, turn off interrupt-driven I/O, etc. */
1798 #ifdef HAVE_WINDOW_SYSTEM
1799 /* Emacs' window system on MSDOG uses the `internal terminal' and therefore
1800 needs the clean-up code below. */
1801 if (!EQ (Vwindow_system
, Qnil
)
1803 /* When running in tty mode on NT/Win95, we have a read_socket
1804 hook, but still need the rest of the clean-up code below. */
1810 sf
= SELECTED_FRAME ();
1811 cursor_to (FRAME_HEIGHT (sf
) - 1, 0);
1812 clear_end_of_line (FRAME_WIDTH (sf
));
1813 /* clear_end_of_line may move the cursor */
1814 cursor_to (FRAME_HEIGHT (sf
) - 1, 0);
1815 #if defined (IBMR2AIX) && defined (AIXHFT)
1817 /* HFT devices normally use ^J as a LF/CR. We forced it to
1818 do the LF only. Now, we need to reset it. */
1821 if (ioctl (1, HFTGETID
, &tty
) != -1)
1822 write (1, "\033[20h", 5);
1826 reset_terminal_modes ();
1830 /* Avoid possible loss of output when changing terminal modes. */
1831 fsync (fileno (stdout
));
1836 #ifndef F_SETOWN_BUG
1837 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1838 if (interrupt_input
)
1841 fcntl (input_fd
, F_SETOWN
, old_fcntl_owner
);
1843 #endif /* F_SETOWN */
1844 #endif /* F_SETOWN_BUG */
1846 fcntl (input_fd
, F_SETFL
, fcntl (input_fd
, F_GETFL
, 0) & ~O_NDELAY
);
1848 #endif /* F_SETFL */
1850 if (interrupt_input
)
1855 while (EMACS_SET_TTY (input_fd
, &old_tty
, 0) < 0 && errno
== EINTR
)
1858 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1862 #ifdef SET_LINE_DISCIPLINE
1863 /* Ultrix's termios *ignores* any line discipline except TERMIODISC.
1864 A different old line discipline is therefore not restored, yet.
1865 Restore the old line discipline by hand. */
1866 ioctl (0, TIOCSETD
, &old_tty
.main
.c_line
);
1874 widen_foreground_group ();
1880 /* Set up the proper status flags for use of a pty. */
1886 /* I'm told that TOICREMOTE does not mean control chars
1887 "can't be sent" but rather that they don't have
1888 input-editing or signaling effects.
1889 That should be good, because we have other ways
1890 to do those things in Emacs.
1891 However, telnet mode seems not to work on 4.2.
1892 So TIOCREMOTE is turned off now. */
1894 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1895 will hang. In particular, the "timeout" feature (which
1896 causes a read to return if there is no data available)
1897 does this. Also it is known that telnet mode will hang
1898 in such a way that Emacs must be stopped (perhaps this
1899 is the same problem).
1901 If TIOCREMOTE is turned off, then there is a bug in
1902 hp-ux which sometimes loses data. Apparently the
1903 code which blocks the master process when the internal
1904 buffer fills up does not work. Other than this,
1905 though, everything else seems to work fine.
1907 Since the latter lossage is more benign, we may as well
1908 lose that way. -- cph */
1910 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
1913 ioctl (fd
, FIONBIO
, &on
);
1918 /* On AIX, the parent gets SIGHUP when a pty attached child dies. So, we */
1919 /* ignore SIGHUP once we've started a child on a pty. Note that this may */
1920 /* cause EMACS not to die when it should, i.e., when its own controlling */
1921 /* tty goes away. I've complained to the AIX developers, and they may */
1922 /* change this behavior, but I'm not going to hold my breath. */
1923 signal (SIGHUP
, SIG_IGN
);
1926 #endif /* HAVE_PTYS */
1930 /* Assigning an input channel is done at the start of Emacs execution.
1931 This is called each time Emacs is resumed, also, but does nothing
1932 because input_chain is no longer zero. */
1941 status
= SYS$
ASSIGN (&input_dsc
, &input_fd
, 0, 0);
1947 /* Deassigning the input channel is done before exiting. */
1952 return SYS$
DASSGN (input_fd
);
1957 /* Request reading one character into the keyboard buffer.
1958 This is done as soon as the buffer becomes empty. */
1964 extern kbd_input_ast ();
1966 waiting_for_ast
= 0;
1968 status
= SYS$
QIO (0, input_fd
, IO$_READVBLK
,
1969 &input_iosb
, kbd_input_ast
, 1,
1970 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1975 /* Ast routine that is called when keyboard input comes in
1976 in accord with the SYS$QIO above. */
1981 register int c
= -1;
1982 int old_errno
= errno
;
1983 extern EMACS_TIME
*input_available_clear_time
;
1985 if (waiting_for_ast
)
1986 SYS$
SETEF (input_ef
);
1987 waiting_for_ast
= 0;
1990 if (input_count
== 25)
1992 printf ("Ast # %d,", input_count
);
1993 printf (" iosb = %x, %x, %x, %x",
1994 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1997 if (input_iosb
.offset
)
2001 printf (", char = 0%o", c
);
2013 struct input_event e
;
2014 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2015 XSETINT (e
.code
, c
);
2016 e
.frame_or_window
= selected_frame
;
2017 kbd_buffer_store_event (&e
);
2019 if (input_available_clear_time
)
2020 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
2024 /* Wait until there is something in kbd_buffer. */
2027 wait_for_kbd_input ()
2029 extern int have_process_input
, process_exited
;
2031 /* If already something, avoid doing system calls. */
2032 if (detect_input_pending ())
2036 /* Clear a flag, and tell ast routine above to set it. */
2037 SYS$
CLREF (input_ef
);
2038 waiting_for_ast
= 1;
2039 /* Check for timing error: ast happened while we were doing that. */
2040 if (!detect_input_pending ())
2042 /* No timing error: wait for flag to be set. */
2043 set_waiting_for_input (0);
2044 SYS$
WFLOR (input_ef
, input_eflist
);
2045 clear_waiting_for_input ();
2046 if (!detect_input_pending ())
2047 /* Check for subprocess input availability */
2049 int dsp
= have_process_input
|| process_exited
;
2051 SYS$
CLREF (process_ef
);
2052 if (have_process_input
)
2053 process_command_input ();
2058 update_mode_lines
++;
2059 prepare_menu_bars ();
2060 redisplay_preserve_echo_area (18);
2064 waiting_for_ast
= 0;
2067 /* Get rid of any pending QIO, when we are about to suspend
2068 or when we want to throw away pending input.
2069 We wait for a positive sign that the AST routine has run
2070 and therefore there is no I/O request queued when we return.
2071 SYS$SETAST is used to avoid a timing error. */
2077 printf ("At end_kbd_input.\n");
2081 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2083 SYS$
CANCEL (input_fd
);
2088 /* Clear a flag, and tell ast routine above to set it. */
2089 SYS$
CLREF (input_ef
);
2090 waiting_for_ast
= 1;
2092 SYS$
CANCEL (input_fd
);
2094 SYS$
WAITFR (input_ef
);
2095 waiting_for_ast
= 0;
2098 /* Wait for either input available or time interval expiry. */
2101 input_wait_timeout (timeval
)
2102 int timeval
; /* Time to wait, in seconds */
2105 static int zero
= 0;
2106 static int large
= -10000000;
2108 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2110 /* If already something, avoid doing system calls. */
2111 if (detect_input_pending ())
2115 /* Clear a flag, and tell ast routine above to set it. */
2116 SYS$
CLREF (input_ef
);
2117 waiting_for_ast
= 1;
2118 /* Check for timing error: ast happened while we were doing that. */
2119 if (!detect_input_pending ())
2121 /* No timing error: wait for flag to be set. */
2123 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2124 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2126 waiting_for_ast
= 0;
2129 /* The standard `sleep' routine works some other way
2130 and it stops working if you have ever quit out of it.
2131 This one continues to work. */
2137 static int zero
= 0;
2138 static int large
= -10000000;
2140 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2143 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2144 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2162 croak ("request sigio");
2168 croak ("unrequest sigio");
2173 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2178 #ifndef SYSTEM_MALLOC
2185 /* Some systems that cannot dump also cannot implement these. */
2188 * Return the address of the start of the text segment prior to
2189 * doing an unexec. After unexec the return value is undefined.
2190 * See crt0.c for further explanation and _start.
2194 #if !(defined (__NetBSD__) && defined (__ELF__))
2195 #ifndef HAVE_TEXT_START
2200 return ((char *) TEXT_START
);
2204 return ((char *) csrt
);
2205 #else /* not GOULD */
2206 extern int _start ();
2207 return ((char *) _start
);
2209 #endif /* TEXT_START */
2211 #endif /* not HAVE_TEXT_START */
2215 * Return the address of the start of the data segment prior to
2216 * doing an unexec. After unexec the return value is undefined.
2217 * See crt0.c for further information and definition of data_start.
2219 * Apparently, on BSD systems this is etext at startup. On
2220 * USG systems (swapping) this is highly mmu dependent and
2221 * is also dependent on whether or not the program is running
2222 * with shared text. Generally there is a (possibly large)
2223 * gap between end of text and start of data with shared text.
2225 * On Uniplus+ systems with shared text, data starts at a
2226 * fixed address. Each port (from a given oem) is generally
2227 * different, and the specific value of the start of data can
2228 * be obtained via the UniPlus+ specific "uvar" system call,
2229 * however the method outlined in crt0.c seems to be more portable.
2231 * Probably what will have to happen when a USG unexec is available,
2232 * at least on UniPlus, is temacs will have to be made unshared so
2233 * that text and data are contiguous. Then once loadup is complete,
2234 * unexec will produce a shared executable where the data can be
2235 * at the normal shared text boundary and the startofdata variable
2236 * will be patched by unexec to the correct value.
2240 #ifndef start_of_data
2245 return ((char *) DATA_START
);
2247 #ifdef ORDINARY_LINK
2249 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2250 * data_start isn't defined. We take the address of environ, which
2251 * is known to live at or near the start of the system crt0.c, and
2252 * we don't sweat the handful of bytes that might lose.
2254 extern char **environ
;
2256 return ((char *) &environ
);
2258 extern int data_start
;
2259 return ((char *) &data_start
);
2260 #endif /* ORDINARY_LINK */
2261 #endif /* DATA_START */
2263 #endif /* start_of_data */
2264 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2266 /* init_system_name sets up the string for the Lisp function
2267 system-name to return. */
2273 extern Lisp_Object Vsystem_name
;
2278 #include <sys/socket.h>
2280 #endif /* HAVE_SOCKETS */
2281 #endif /* not VMS */
2282 #endif /* not BSD4_1 */
2285 #ifndef HAVE_H_ERRNO
2288 #endif /* TRY_AGAIN */
2294 Vsystem_name
= build_string (sysname
);
2298 if ((sp
= egetenv ("SYS$NODE")) == 0)
2299 Vsystem_name
= build_string ("vax-vms");
2300 else if ((end
= index (sp
, ':')) == 0)
2301 Vsystem_name
= build_string (sp
);
2303 Vsystem_name
= make_string (sp
, end
- sp
);
2305 #ifndef HAVE_GETHOSTNAME
2308 Vsystem_name
= build_string (uts
.nodename
);
2309 #else /* HAVE_GETHOSTNAME */
2310 unsigned int hostname_size
= 256;
2311 char *hostname
= (char *) alloca (hostname_size
);
2313 /* Try to get the host name; if the buffer is too short, try
2314 again. Apparently, the only indication gethostname gives of
2315 whether the buffer was large enough is the presence or absence
2316 of a '\0' in the string. Eech. */
2319 gethostname (hostname
, hostname_size
- 1);
2320 hostname
[hostname_size
- 1] = '\0';
2322 /* Was the buffer large enough for the '\0'? */
2323 if (strlen (hostname
) < hostname_size
- 1)
2326 hostname_size
<<= 1;
2327 hostname
= (char *) alloca (hostname_size
);
2330 /* Turn the hostname into the official, fully-qualified hostname.
2331 Don't do this if we're going to dump; this can confuse system
2332 libraries on some machines and make the dumped emacs core dump. */
2335 #endif /* not CANNOT_DUMP */
2336 if (! index (hostname
, '.'))
2340 for (count
= 0;; count
++)
2345 hp
= gethostbyname (hostname
);
2347 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2352 Fsleep_for (make_number (1), Qnil
);
2356 char *fqdn
= (char *) hp
->h_name
;
2361 if (!index (fqdn
, '.'))
2363 /* We still don't have a fully qualified domain name.
2364 Try to find one in the list of alternate names */
2365 char **alias
= hp
->h_aliases
;
2366 while (*alias
&& !index (*alias
, '.'))
2373 /* Convert the host name to lower case. */
2374 /* Using ctype.h here would introduce a possible locale
2375 dependence that is probably wrong for hostnames. */
2379 if (*p
>= 'A' && *p
<= 'Z')
2386 #endif /* HAVE_SOCKETS */
2387 /* We used to try using getdomainname here,
2388 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2389 getdomainname gets the NIS/YP domain which often is not the same
2390 as in Internet domain name. */
2391 #if 0 /* Turned off because sysinfo is not really likely to return the
2392 correct Internet domain. */
2393 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2394 if (! index (hostname
, '.'))
2396 /* The hostname is not fully qualified. Append the domain name. */
2398 int hostlen
= strlen (hostname
);
2399 int domain_size
= 256;
2403 char *domain
= (char *) alloca (domain_size
+ 1);
2404 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2405 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2406 if (sys_domain_size
<= 0)
2408 if (domain_size
< sys_domain_size
)
2410 domain_size
= sys_domain_size
;
2413 strcpy (fqdn
, hostname
);
2414 if (domain
[0] == '.')
2415 strcpy (fqdn
+ hostlen
, domain
);
2416 else if (domain
[0] != 0)
2418 fqdn
[hostlen
] = '.';
2419 strcpy (fqdn
+ hostlen
+ 1, domain
);
2425 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2427 Vsystem_name
= build_string (hostname
);
2428 #endif /* HAVE_GETHOSTNAME */
2433 for (p
= SDATA (Vsystem_name
); *p
; p
++)
2434 if (*p
== ' ' || *p
== '\t')
2441 #if !defined (HAVE_SELECT) || defined (BROKEN_SELECT_NON_X)
2443 #include "sysselect.h"
2446 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2447 /* Cause explanatory error message at compile time,
2448 since the select emulation is not good enough for X. */
2449 int *x
= &x_windows_lose_if_no_select_system_call
;
2452 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2453 * Only checks read descriptors.
2455 /* How long to wait between checking fds in select */
2456 #define SELECT_PAUSE 1
2459 /* For longjmp'ing back to read_input_waiting. */
2461 jmp_buf read_alarm_throw
;
2463 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2464 The read_socket_hook function sets this to 1 while it is waiting. */
2466 int read_alarm_should_throw
;
2474 #else /* not BSD4_1 */
2475 signal (SIGALRM
, SIG_IGN
);
2476 #endif /* not BSD4_1 */
2477 if (read_alarm_should_throw
)
2478 longjmp (read_alarm_throw
, 1);
2482 /* Only rfds are checked. */
2484 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2486 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2487 EMACS_TIME
*timeout
;
2493 extern int proc_buffered_char
[];
2494 #ifndef subprocesses
2495 int process_tick
= 0, update_tick
= 0;
2497 extern int process_tick
, update_tick
;
2501 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2502 /* If we're using X, then the native select will work; we only need the
2503 emulation for non-X usage. */
2504 if (!NILP (Vwindow_system
))
2505 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2507 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2508 local_timeout
= &timeoutval
;
2520 /* If we are looking only for the terminal, with no timeout,
2521 just read it and wait -- that's more efficient. */
2522 if (*local_timeout
== 100000 && process_tick
== update_tick
2523 && FD_ISSET (0, &orfds
))
2526 for (fd
= 1; fd
< nfds
; ++fd
)
2527 if (FD_ISSET (fd
, &orfds
))
2529 if (! detect_input_pending ())
2530 read_input_waiting ();
2536 /* Once a second, till the timer expires, check all the flagged read
2537 * descriptors to see if any input is available. If there is some then
2538 * set the corresponding bit in the return copy of rfds.
2542 register int to_check
, fd
;
2546 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2548 if (FD_ISSET (fd
, &orfds
))
2550 int avail
= 0, status
= 0;
2553 avail
= detect_input_pending (); /* Special keyboard handler */
2557 status
= ioctl (fd
, FIONREAD
, &avail
);
2558 #else /* no FIONREAD */
2559 /* Hoping it will return -1 if nothing available
2560 or 0 if all 0 chars requested are read. */
2561 if (proc_buffered_char
[fd
] >= 0)
2565 avail
= read (fd
, &buf
, 1);
2567 proc_buffered_char
[fd
] = buf
;
2569 #endif /* no FIONREAD */
2571 if (status
>= 0 && avail
> 0)
2579 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2582 turn_on_atimers (0);
2583 signal (SIGALRM
, select_alarm
);
2585 alarm (SELECT_PAUSE
);
2587 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2588 while (select_alarmed
== 0 && *local_timeout
!= 0
2589 && process_tick
== update_tick
)
2591 /* If we are interested in terminal input,
2592 wait by reading the terminal.
2593 That makes instant wakeup for terminal input at least. */
2594 if (FD_ISSET (0, &orfds
))
2596 read_input_waiting ();
2597 if (detect_input_pending ())
2603 (*local_timeout
) -= SELECT_PAUSE
;
2605 /* Reset the old alarm if there was one. */
2606 turn_on_atimers (1);
2608 if (*local_timeout
== 0) /* Stop on timer being cleared */
2613 #endif /* not WINDOWSNT */
2615 /* Read keyboard input into the standard buffer,
2616 waiting for at least one character. */
2618 /* Make all keyboard buffers much bigger when using a window system. */
2619 #ifdef HAVE_WINDOW_SYSTEM
2620 #define BUFFER_SIZE_FACTOR 16
2622 #define BUFFER_SIZE_FACTOR 1
2626 read_input_waiting ()
2628 struct input_event e
;
2630 extern int quit_char
;
2632 if (read_socket_hook
)
2634 struct input_event buf
[256];
2636 read_alarm_should_throw
= 0;
2637 if (! setjmp (read_alarm_throw
))
2638 nread
= (*read_socket_hook
) (0, buf
, 256, 1);
2642 /* Scan the chars for C-g and store them in kbd_buffer. */
2643 for (i
= 0; i
< nread
; i
++)
2645 kbd_buffer_store_event (&buf
[i
]);
2646 /* Don't look at input that follows a C-g too closely.
2647 This reduces lossage due to autorepeat on C-g. */
2648 if (buf
[i
].kind
== ASCII_KEYSTROKE_EVENT
2649 && buf
[i
].code
== quit_char
)
2656 nread
= read (fileno (stdin
), buf
, 1);
2658 /* Scan the chars for C-g and store them in kbd_buffer. */
2659 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2660 e
.frame_or_window
= selected_frame
;
2662 for (i
= 0; i
< nread
; i
++)
2664 /* Convert chars > 0177 to meta events if desired.
2665 We do this under the same conditions that read_avail_input does. */
2666 if (read_socket_hook
== 0)
2668 /* If the user says she has a meta key, then believe her. */
2669 if (meta_key
== 1 && (buf
[i
] & 0x80))
2670 e
.modifiers
= meta_modifier
;
2675 XSETINT (e
.code
, buf
[i
]);
2676 kbd_buffer_store_event (&e
);
2677 /* Don't look at input that follows a C-g too closely.
2678 This reduces lossage due to autorepeat on C-g. */
2679 if (buf
[i
] == quit_char
)
2685 #endif /* not HAVE_SELECT */
2686 #endif /* not VMS */
2687 #endif /* not MSDOS */
2696 lmode
= LINTRUP
| lmode
;
2697 ioctl (fd
, TIOCLSET
, &lmode
);
2705 lmode
= ~LINTRUP
& lmode
;
2706 ioctl (0, TIOCLSET
, &lmode
);
2714 interrupts_deferred
= 0;
2722 interrupts_deferred
= 1;
2725 /* still inside #ifdef BSD4_1 */
2728 int sigheld
; /* Mask of held signals */
2734 sigheld
|= sigbit (signum
);
2742 sigheld
|= sigbit (signum
);
2749 sigheld
&= ~sigbit (signum
);
2754 sigfree () /* Free all held signals */
2757 for (i
= 0; i
< NSIG
; i
++)
2758 if (sigheld
& sigbit (i
))
2766 return 1 << (i
- 1);
2768 #endif /* subprocesses */
2771 /* POSIX signals support - DJB */
2772 /* Anyone with POSIX signals should have ANSI C declarations */
2774 #ifdef POSIX_SIGNALS
2776 sigset_t empty_mask
, full_mask
;
2779 sys_signal (int signal_number
, signal_handler_t action
)
2781 struct sigaction new_action
, old_action
;
2782 sigemptyset (&new_action
.sa_mask
);
2783 new_action
.sa_handler
= action
;
2784 #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART)
2785 /* Emacs mostly works better with restartable system services. If this
2786 flag exists, we probably want to turn it on here.
2787 However, on some systems this resets the timeout of `select'
2788 which means that `select' never finishes if it keeps getting signals.
2789 BROKEN_SA_RESTART is defined on those systems. */
2790 new_action
.sa_flags
= SA_RESTART
;
2792 new_action
.sa_flags
= 0;
2794 sigaction (signal_number
, &new_action
, &old_action
);
2795 return (old_action
.sa_handler
);
2799 /* If we're compiling with GCC, we don't need this function, since it
2800 can be written as a macro. */
2802 sys_sigmask (int sig
)
2805 sigemptyset (&mask
);
2806 sigaddset (&mask
, sig
);
2811 /* I'd like to have these guys return pointers to the mask storage in here,
2812 but there'd be trouble if the code was saving multiple masks. I'll be
2813 safe and pass the structure. It normally won't be more than 2 bytes
2817 sys_sigblock (sigset_t new_mask
)
2820 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2825 sys_sigunblock (sigset_t new_mask
)
2828 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2833 sys_sigsetmask (sigset_t new_mask
)
2836 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2840 #endif /* POSIX_SIGNALS */
2842 #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED
2843 static char *my_sys_siglist
[NSIG
];
2847 # define sys_siglist my_sys_siglist
2853 #ifdef POSIX_SIGNALS
2854 sigemptyset (&empty_mask
);
2855 sigfillset (&full_mask
);
2858 #if !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED
2862 sys_siglist
[SIGABRT
] = "Aborted";
2865 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2868 sys_siglist
[SIGALRM
] = "Alarm clock";
2871 sys_siglist
[SIGBUS
] = "Bus error";
2874 sys_siglist
[SIGCLD
] = "Child status changed";
2877 sys_siglist
[SIGCHLD
] = "Child status changed";
2880 sys_siglist
[SIGCONT
] = "Continued";
2883 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2886 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2889 sys_siglist
[SIGEMT
] = "Emulation trap";
2892 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2895 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2898 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
2901 sys_siglist
[SIGHUP
] = "Hangup";
2904 sys_siglist
[SIGILL
] = "Illegal instruction";
2907 sys_siglist
[SIGINT
] = "Interrupt";
2910 sys_siglist
[SIGIO
] = "I/O possible";
2913 sys_siglist
[SIGIOINT
] = "I/O intervention required";
2916 sys_siglist
[SIGIOT
] = "IOT trap";
2919 sys_siglist
[SIGKILL
] = "Killed";
2922 sys_siglist
[SIGLOST
] = "Resource lost";
2925 sys_siglist
[SIGLWP
] = "SIGLWP";
2928 sys_siglist
[SIGMSG
] = "Monitor mode data available";
2931 sys_siglist
[SIGWIND
] = "SIGPHONE";
2934 sys_siglist
[SIGPIPE
] = "Broken pipe";
2937 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
2940 sys_siglist
[SIGPROF
] = "Profiling timer expired";
2943 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
2946 sys_siglist
[SIGPWR
] = "Power-fail restart";
2949 sys_siglist
[SIGQUIT
] = "Quit";
2952 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
2955 sys_siglist
[SIGSAK
] = "Secure attention";
2958 sys_siglist
[SIGSEGV
] = "Segmentation violation";
2961 sys_siglist
[SIGSOUND
] = "Sound completed";
2964 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
2967 sys_siglist
[SIGSTP
] = "Stopped (user)";
2970 sys_siglist
[SIGSYS
] = "Bad argument to system call";
2973 sys_siglist
[SIGTERM
] = "Terminated";
2976 sys_siglist
[SIGTHAW
] = "SIGTHAW";
2979 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
2982 sys_siglist
[SIGTSTP
] = "Stopped (user)";
2985 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
2988 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
2991 sys_siglist
[SIGURG
] = "Urgent I/O condition";
2994 sys_siglist
[SIGUSR1
] = "User defined signal 1";
2997 sys_siglist
[SIGUSR2
] = "User defined signal 2";
3000 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
3003 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
3006 sys_siglist
[SIGWINCH
] = "Window size changed";
3009 sys_siglist
[SIGWIND
] = "SIGWIND";
3012 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
3015 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
3018 #endif /* !defined HAVE_STRSIGNAL && !defined SYS_SIGLIST_DECLARED */
3027 /* Figure out how many bits the system's random number generator uses.
3028 `random' and `lrand48' are assumed to return 31 usable bits.
3029 BSD `rand' returns a 31 bit value but the low order bits are unusable;
3030 so we'll shift it and treat it like the 15-bit USG `rand'. */
3034 # define RAND_BITS 31
3035 # else /* !HAVE_RANDOM */
3036 # ifdef HAVE_LRAND48
3037 # define RAND_BITS 31
3038 # define random lrand48
3039 # else /* !HAVE_LRAND48 */
3040 # define RAND_BITS 15
3041 # if RAND_MAX == 32767
3042 # define random rand
3043 # else /* RAND_MAX != 32767 */
3044 # if RAND_MAX == 2147483647
3045 # define random() (rand () >> 16)
3046 # else /* RAND_MAX != 2147483647 */
3048 # define random rand
3050 # define random() (rand () >> 16)
3052 # endif /* RAND_MAX != 2147483647 */
3053 # endif /* RAND_MAX != 32767 */
3054 # endif /* !HAVE_LRAND48 */
3055 # endif /* !HAVE_RANDOM */
3056 #endif /* !RAND_BITS */
3063 srandom ((unsigned int)arg
);
3065 # ifdef HAVE_LRAND48
3068 srand ((unsigned int)arg
);
3074 * Build a full Emacs-sized word out of whatever we've got.
3075 * This suffices even for a 64-bit architecture with a 15-bit rand.
3080 long val
= random ();
3081 #if VALBITS > RAND_BITS
3082 val
= (val
<< RAND_BITS
) ^ random ();
3083 #if VALBITS > 2*RAND_BITS
3084 val
= (val
<< RAND_BITS
) ^ random ();
3085 #if VALBITS > 3*RAND_BITS
3086 val
= (val
<< RAND_BITS
) ^ random ();
3087 #if VALBITS > 4*RAND_BITS
3088 val
= (val
<< RAND_BITS
) ^ random ();
3089 #endif /* need at least 5 */
3090 #endif /* need at least 4 */
3091 #endif /* need at least 3 */
3092 #endif /* need at least 2 */
3093 return val
& ((1L << VALBITS
) - 1);
3096 #ifdef WRONG_NAME_INSQUE
3109 /* If any place else asks for the TERM variable,
3110 allow it to be overridden with the EMACS_TERM variable
3111 before attempting to translate the logical name TERM. As a last
3112 resort, ask for VAX C's special idea of the TERM variable. */
3119 static char buf
[256];
3120 static struct dsc$descriptor_s equiv
3121 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3122 static struct dsc$descriptor_s d_name
3123 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3126 if (!strcmp (name
, "TERM"))
3128 val
= (char *) getenv ("EMACS_TERM");
3133 d_name
.dsc$w_length
= strlen (name
);
3134 d_name
.dsc$a_pointer
= name
;
3135 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3137 char *str
= (char *) xmalloc (eqlen
+ 1);
3138 bcopy (buf
, str
, eqlen
);
3140 /* This is a storage leak, but a pain to fix. With luck,
3141 no one will ever notice. */
3144 return (char *) getenv (name
);
3149 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3150 to force a call on the debugger from within the image. */
3155 LIB$
SIGNAL (SS$_DEBUG
);
3161 #ifdef LINK_CRTL_SHARE
3162 #ifdef SHARABLE_LIB_BUG
3163 /* Variables declared noshare and initialized in sharable libraries
3164 cannot be shared. The VMS linker incorrectly forces you to use a private
3165 version which is uninitialized... If not for this "feature", we
3166 could use the C library definition of sys_nerr and sys_errlist. */
3168 char *sys_errlist
[] =
3172 "no such file or directory",
3174 "interrupted system call",
3176 "no such device or address",
3177 "argument list too long",
3178 "exec format error",
3181 "no more processes",
3182 "not enough memory",
3183 "permission denied",
3185 "block device required",
3186 "mount devices busy",
3188 "cross-device link",
3193 "file table overflow",
3194 "too many open files",
3198 "no space left on device",
3200 "read-only file system",
3206 "vax/vms specific error code nontranslatable error"
3208 #endif /* SHARABLE_LIB_BUG */
3209 #endif /* LINK_CRTL_SHARE */
3212 #ifndef HAVE_STRERROR
3218 extern char *sys_errlist
[];
3219 extern int sys_nerr
;
3221 if (errnum
>= 0 && errnum
< sys_nerr
)
3222 return sys_errlist
[errnum
];
3223 return (char *) "Unknown error";
3225 #endif /* not WINDOWSNT */
3226 #endif /* ! HAVE_STRERROR */
3229 emacs_open (path
, oflag
, mode
)
3233 register int rtnval
;
3236 if (oflag
& O_CREAT
)
3237 return creat (path
, mode
);
3240 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3241 && (errno
== EINTR
));
3250 register int rtnval
;
3252 while ((rtnval
= close (fd
)) == -1
3253 && (errno
== EINTR
))
3256 /* If close is interrupted SunOS 4.1 may or may not have closed the
3257 file descriptor. If it did the second close will fail with
3258 errno = EBADF. That means we have succeeded. */
3259 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3266 emacs_read (fildes
, buf
, nbyte
)
3271 register int rtnval
;
3273 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3274 && (errno
== EINTR
));
3279 emacs_write (fildes
, buf
, nbyte
)
3284 register int rtnval
, bytes_written
;
3290 rtnval
= write (fildes
, buf
, nbyte
);
3297 return (bytes_written
? bytes_written
: -1);
3302 bytes_written
+= rtnval
;
3304 return (bytes_written
);
3309 * All of the following are for USG.
3311 * On USG systems the system calls are INTERRUPTIBLE by signals
3312 * that the user program has elected to catch. Thus the system call
3313 * must be retried in these cases. To handle this without massive
3314 * changes in the source code, we remap the standard system call names
3315 * to names for our own functions in sysdep.c that do the system call
3316 * with retries. Actually, for portability reasons, it is good
3317 * programming practice, as this example shows, to limit all actual
3318 * system calls to a single occurrence in the source. Sure, this
3319 * adds an extra level of function call overhead but it is almost
3320 * always negligible. Fred Fish, Unisoft Systems Inc.
3324 * Warning, this function may not duplicate 4.2 action properly
3325 * under error conditions.
3329 /* In 4.1, param.h fails to define this. */
3330 #define MAXPATHLEN 1024
3339 char *npath
, *spath
;
3340 extern char *getcwd ();
3342 BLOCK_INPUT
; /* getcwd uses malloc */
3343 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3349 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3350 up to first slash. Should be harmless on other systems. */
3351 while (*npath
&& *npath
!= '/')
3353 strcpy (pathname
, npath
);
3354 free (spath
); /* getcwd uses malloc */
3359 #endif /* HAVE_GETWD */
3362 * Emulate rename using unlink/link. Note that this is
3363 * only partially correct. Also, doesn't enforce restriction
3364 * that files be of same type (regular->regular, dir->dir, etc).
3373 if (access (from
, 0) == 0)
3376 if (link (from
, to
) == 0)
3377 if (unlink (from
) == 0)
3389 /* HPUX curses library references perror, but as far as we know
3390 it won't be called. Anyway this definition will do for now. */
3396 #endif /* not HAVE_PERROR */
3402 * Emulate BSD dup2. First close newd if it already exists.
3403 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3404 * until we are, then close the unsuccessful ones.
3411 register int fd
, ret
;
3416 return fcntl (oldd
, F_DUPFD
, newd
);
3423 ret
= dup2 (old
,new);
3429 #endif /* not HAVE_DUP2 */
3432 * Gettimeofday. Simulate as much as possible. Only accurate
3433 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3434 * Only needed when subprocesses are defined.
3439 #ifndef HAVE_GETTIMEOFDAY
3444 gettimeofday (tp
, tzp
)
3446 struct timezone
*tzp
;
3448 extern long time ();
3450 tp
->tv_sec
= time ((long *)0);
3453 tzp
->tz_minuteswest
= -1;
3460 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3463 * This function will go away as soon as all the stubs fixed. (fnf)
3470 printf ("%s not yet implemented\r\n", badfunc
);
3477 /* Directory routines for systems that don't have them. */
3479 #ifdef SYSV_SYSTEM_DIR
3483 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3487 register DIR *dirp
; /* stream from opendir */
3491 rtnval
= emacs_close (dirp
->dd_fd
);
3493 /* Some systems (like Solaris) allocate the buffer and the DIR all
3494 in one block. Why in the world are we freeing this ourselves
3496 #if ! (defined (sun) && defined (USG5_4))
3497 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3499 xfree ((char *) dirp
);
3503 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3504 #endif /* SYSV_SYSTEM_DIR */
3506 #ifdef NONSYSTEM_DIR_LIBRARY
3510 char *filename
; /* name of directory */
3512 register DIR *dirp
; /* -> malloc'ed storage */
3513 register int fd
; /* file descriptor for read */
3514 struct stat sbuf
; /* result of fstat */
3516 fd
= emacs_open (filename
, O_RDONLY
, 0);
3521 if (fstat (fd
, &sbuf
) < 0
3522 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3523 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3527 return 0; /* bad luck today */
3532 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3539 register DIR *dirp
; /* stream from opendir */
3541 emacs_close (dirp
->dd_fd
);
3542 xfree ((char *) dirp
);
3550 ino_t od_ino
; /* inode */
3551 char od_name
[DIRSIZ
]; /* filename */
3553 #endif /* not VMS */
3555 struct direct dir_static
; /* simulated directory contents */
3560 register DIR *dirp
; /* stream from opendir */
3563 register struct olddir
*dp
; /* -> directory data */
3565 register struct dir$_name
*dp
; /* -> directory data */
3566 register struct dir$_version
*dv
; /* -> version data */
3571 if (dirp
->dd_loc
>= dirp
->dd_size
)
3572 dirp
->dd_loc
= dirp
->dd_size
= 0;
3574 if (dirp
->dd_size
== 0 /* refill buffer */
3575 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3579 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3580 dirp
->dd_loc
+= sizeof (struct olddir
);
3582 if (dp
->od_ino
!= 0) /* not deleted entry */
3584 dir_static
.d_ino
= dp
->od_ino
;
3585 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3586 dir_static
.d_name
[DIRSIZ
] = '\0';
3587 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3588 dir_static
.d_reclen
= sizeof (struct direct
)
3590 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3591 return &dir_static
; /* -> simulated structure */
3594 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3595 if (dirp
->dd_loc
== 0)
3596 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3597 : dp
->dir$b_namecount
;
3598 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3599 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3600 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3601 dir_static
.d_reclen
= sizeof (struct direct
)
3603 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3604 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3605 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3606 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3613 /* readdirver is just like readdir except it returns all versions of a file
3614 as separate entries. */
3619 register DIR *dirp
; /* stream from opendir */
3621 register struct dir$_name
*dp
; /* -> directory data */
3622 register struct dir$_version
*dv
; /* -> version data */
3624 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3625 dirp
->dd_loc
= dirp
->dd_size
= 0;
3627 if (dirp
->dd_size
== 0 /* refill buffer */
3628 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3631 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3632 if (dirp
->dd_loc
== 0)
3633 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3634 : dp
->dir$b_namecount
;
3635 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3636 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3637 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3638 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3639 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3640 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3641 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3642 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3648 #endif /* NONSYSTEM_DIR_LIBRARY */
3652 set_file_times (filename
, atime
, mtime
)
3653 const char *filename
;
3654 EMACS_TIME atime
, mtime
;
3657 struct timeval tv
[2];
3660 return utimes (filename
, tv
);
3661 #else /* not HAVE_UTIMES */
3663 utb
.actime
= EMACS_SECS (atime
);
3664 utb
.modtime
= EMACS_SECS (mtime
);
3665 return utime (filename
, &utb
);
3666 #endif /* not HAVE_UTIMES */
3669 /* mkdir and rmdir functions, for systems which don't have them. */
3673 * Written by Robert Rother, Mariah Corporation, August 1985.
3675 * If you want it, it's yours. All I ask in return is that if you
3676 * figure out how to do this in a Bourne Shell script you send me
3678 * sdcsvax!rmr or rmr@uscd
3680 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3681 * subroutine. 11Mar86; hoptoad!gnu
3683 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3684 * subroutine didn't return EEXIST. It does now.
3690 #ifdef MKDIR_PROTOTYPE
3694 mkdir (dpath
, dmode
)
3699 int cpid
, status
, fd
;
3700 struct stat statbuf
;
3702 if (stat (dpath
, &statbuf
) == 0)
3704 errno
= EEXIST
; /* Stat worked, so it already exists */
3708 /* If stat fails for a reason other than non-existence, return error */
3709 if (errno
!= ENOENT
)
3712 synch_process_alive
= 1;
3713 switch (cpid
= fork ())
3716 case -1: /* Error in fork */
3717 return (-1); /* Errno is set already */
3719 case 0: /* Child process */
3721 * Cheap hack to set mode of new directory. Since this
3722 * child process is going away anyway, we zap its umask.
3723 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3724 * directory. Does anybody care?
3726 status
= umask (0); /* Get current umask */
3727 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3728 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3735 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3736 _exit (-1); /* Can't exec /bin/mkdir */
3738 default: /* Parent process */
3739 wait_for_termination (cpid
);
3742 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3744 errno
= EIO
; /* We don't know why, but */
3745 return -1; /* /bin/mkdir failed */
3750 #endif /* not HAVE_MKDIR */
3757 int cpid
, status
, fd
;
3758 struct stat statbuf
;
3760 if (stat (dpath
, &statbuf
) != 0)
3762 /* Stat just set errno. We don't have to */
3766 synch_process_alive
= 1;
3767 switch (cpid
= fork ())
3770 case -1: /* Error in fork */
3771 return (-1); /* Errno is set already */
3773 case 0: /* Child process */
3774 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3781 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3782 _exit (-1); /* Can't exec /bin/rmdir */
3784 default: /* Parent process */
3785 wait_for_termination (cpid
);
3788 if (synch_process_death
!= 0 || synch_process_retcode
!= 0)
3790 errno
= EIO
; /* We don't know why, but */
3791 return -1; /* /bin/rmdir failed */
3796 #endif /* !HAVE_RMDIR */
3800 /* Functions for VMS */
3802 #include "vms-pwd.h"
3807 /* Return as a string the VMS error string pertaining to STATUS.
3808 Reuses the same static buffer each time it is called. */
3812 int status
; /* VMS status code */
3816 static char buf
[257];
3818 bufadr
[0] = sizeof buf
- 1;
3819 bufadr
[1] = (int) buf
;
3820 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3821 return "untranslatable VMS error status";
3829 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3830 * not work correctly. (It also doesn't work well in version 2.3.)
3835 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3836 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3840 unsigned short s_buflen
;
3841 unsigned short s_code
;
3843 unsigned short *s_retlenadr
;
3847 #define buflen s.s_buflen
3848 #define code s.s_code
3849 #define bufadr s.s_bufadr
3850 #define retlenadr s.s_retlenadr
3852 #define R_OK 4 /* test for read permission */
3853 #define W_OK 2 /* test for write permission */
3854 #define X_OK 1 /* test for execute (search) permission */
3855 #define F_OK 0 /* test for presence of file */
3858 sys_access (path
, mode
)
3862 static char *user
= NULL
;
3865 /* translate possible directory spec into .DIR file name, so brain-dead
3866 * access can treat the directory like a file. */
3867 if (directory_file_name (path
, dir_fn
))
3871 return access (path
, mode
);
3872 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3878 unsigned short int dummy
;
3880 static int constant
= ACL$C_FILE
;
3881 DESCRIPTOR (path_desc
, path
);
3882 DESCRIPTOR (user_desc
, user
);
3886 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3889 acces
|= CHP$M_READ
;
3891 acces
|= CHP$M_WRITE
;
3892 itemlst
[0].buflen
= sizeof (int);
3893 itemlst
[0].code
= CHP$_FLAGS
;
3894 itemlst
[0].bufadr
= (char *) &flags
;
3895 itemlst
[0].retlenadr
= &dummy
;
3896 itemlst
[1].buflen
= sizeof (int);
3897 itemlst
[1].code
= CHP$_ACCESS
;
3898 itemlst
[1].bufadr
= (char *) &acces
;
3899 itemlst
[1].retlenadr
= &dummy
;
3900 itemlst
[2].end
= CHP$_END
;
3901 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3902 return stat
== SS$_NORMAL
? 0 : -1;
3906 #else /* not VMS4_4 */
3909 #define ACE$M_WRITE 2
3910 #define ACE$C_KEYID 1
3912 static unsigned short memid
, grpid
;
3913 static unsigned int uic
;
3915 /* Called from init_sys_modes, so it happens not very often
3916 but at least each time Emacs is loaded. */
3918 sys_access_reinit ()
3924 sys_access (filename
, type
)
3930 int status
, size
, i
, typecode
, acl_controlled
;
3931 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3932 union prvdef prvmask
;
3934 /* Get UIC and GRP values for protection checking. */
3937 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3940 memid
= uic
& 0xFFFF;
3944 if (type
!= 2) /* not checking write access */
3945 return access (filename
, type
);
3947 /* Check write protection. */
3949 #define CHECKPRIV(bit) (prvmask.bit)
3950 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3952 /* Find privilege bits */
3953 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3955 error ("Unable to find privileges: %s", vmserrstr (status
));
3956 if (CHECKPRIV (PRV$V_BYPASS
))
3957 return 0; /* BYPASS enabled */
3959 fab
.fab$b_fac
= FAB$M_GET
;
3960 fab
.fab$l_fna
= filename
;
3961 fab
.fab$b_fns
= strlen (filename
);
3962 fab
.fab$l_xab
= &xab
;
3963 xab
= cc$rms_xabpro
;
3964 xab
.xab$l_aclbuf
= aclbuf
;
3965 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3966 status
= SYS$
OPEN (&fab
, 0, 0);
3969 SYS$
CLOSE (&fab
, 0, 0);
3970 /* Check system access */
3971 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
3973 /* Check ACL entries, if any */
3975 if (xab
.xab$w_acllen
> 0)
3978 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3979 while (*aclptr
&& aclptr
< aclend
)
3981 size
= (*aclptr
& 0xff) / 4;
3982 typecode
= (*aclptr
>> 8) & 0xff;
3983 if (typecode
== ACE$C_KEYID
)
3984 for (i
= size
- 1; i
> 1; i
--)
3985 if (aclptr
[i
] == uic
)
3988 if (aclptr
[1] & ACE$M_WRITE
)
3989 return 0; /* Write access through ACL */
3991 aclptr
= &aclptr
[size
];
3993 if (acl_controlled
) /* ACL specified, prohibits write access */
3996 /* No ACL entries specified, check normal protection */
3997 if (WRITABLE (XAB$V_WLD
)) /* World writable */
3999 if (WRITABLE (XAB$V_GRP
) &&
4000 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
4001 return 0; /* Group writable */
4002 if (WRITABLE (XAB$V_OWN
) &&
4003 (xab
.xab$l_uic
& 0xFFFF) == memid
)
4004 return 0; /* Owner writable */
4006 return -1; /* Not writable */
4008 #endif /* not VMS4_4 */
4011 static char vtbuf
[NAM$C_MAXRSS
+1];
4013 /* translate a vms file spec to a unix path */
4015 sys_translate_vms (vfile
)
4026 /* leading device or logical name is a root directory */
4027 if (p
= strchr (vfile
, ':'))
4036 if (*p
== '[' || *p
== '<')
4038 while (*++vfile
!= *p
+ 2)
4042 if (vfile
[-1] == *p
)
4065 static char utbuf
[NAM$C_MAXRSS
+1];
4067 /* translate a unix path to a VMS file spec */
4069 sys_translate_unix (ufile
)
4092 if (index (&ufile
[1], '/'))
4099 if (index (&ufile
[1], '/'))
4106 if (strncmp (ufile
, "./", 2) == 0)
4113 ufile
++; /* skip the dot */
4114 if (index (&ufile
[1], '/'))
4119 else if (strncmp (ufile
, "../", 3) == 0)
4127 ufile
+= 2; /* skip the dots */
4128 if (index (&ufile
[1], '/'))
4153 extern char *getcwd ();
4155 #define MAXPATHLEN 1024
4157 ptr
= xmalloc (MAXPATHLEN
);
4158 val
= getcwd (ptr
, MAXPATHLEN
);
4164 strcpy (pathname
, ptr
);
4173 long item_code
= JPI$_OWNER
;
4174 unsigned long parent_id
;
4177 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4180 vaxc$errno
= status
;
4190 return (getgid () << 16) | getuid ();
4195 sys_read (fildes
, buf
, nbyte
)
4200 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4205 sys_write (fildes
, buf
, nbyte
)
4210 register int nwrote
, rtnval
= 0;
4212 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4218 return rtnval
? rtnval
: -1;
4219 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4220 return rtnval
? rtnval
: -1;
4221 return (rtnval
+ nwrote
);
4226 * VAX/VMS VAX C RTL really loses. It insists that records
4227 * end with a newline (carriage return) character, and if they
4228 * don't it adds one (nice of it isn't it!)
4230 * Thus we do this stupidity below.
4235 sys_write (fildes
, buf
, nbytes
)
4238 unsigned int nbytes
;
4245 fstat (fildes
, &st
);
4251 /* Handle fixed-length files with carriage control. */
4252 if (st
.st_fab_rfm
== FAB$C_FIX
4253 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4255 len
= st
.st_fab_mrs
;
4256 retval
= write (fildes
, p
, min (len
, nbytes
));
4259 retval
++; /* This skips the implied carriage control */
4263 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4264 while (*e
!= '\n' && e
> p
) e
--;
4265 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4266 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4268 retval
= write (fildes
, p
, len
);
4279 /* Create file NEW copying its attributes from file OLD. If
4280 OLD is 0 or does not exist, create based on the value of
4283 /* Protection value the file should ultimately have.
4284 Set by create_copy_attrs, and use by rename_sansversions. */
4285 static unsigned short int fab_final_pro
;
4288 creat_copy_attrs (old
, new)
4291 struct FAB fab
= cc$rms_fab
;
4292 struct XABPRO xabpro
;
4293 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4294 extern int vms_stmlf_recfm
;
4298 fab
.fab$b_fac
= FAB$M_GET
;
4299 fab
.fab$l_fna
= old
;
4300 fab
.fab$b_fns
= strlen (old
);
4301 fab
.fab$l_xab
= (char *) &xabpro
;
4302 xabpro
= cc$rms_xabpro
;
4303 xabpro
.xab$l_aclbuf
= aclbuf
;
4304 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4305 /* Call $OPEN to fill in the fab & xabpro fields. */
4306 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4308 SYS$
CLOSE (&fab
, 0, 0);
4309 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4310 if (xabpro
.xab$w_acllen
> 0)
4312 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4313 /* If the acl buffer was too short, redo open with longer one.
4314 Wouldn't need to do this if there were some system imposed
4315 limit on the size of an ACL, but I can't find any such. */
4317 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4318 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4319 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4320 SYS$
CLOSE (&fab
, 0, 0);
4326 xabpro
.xab$l_aclbuf
= 0;
4331 fab
.fab$l_fna
= new;
4332 fab
.fab$b_fns
= strlen (new);
4336 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4337 fab
.fab$b_rat
= FAB$M_CR
;
4340 /* Set the file protections such that we will be able to manipulate
4341 this file. Once we are done writing and renaming it, we will set
4342 the protections back. */
4344 fab_final_pro
= xabpro
.xab$w_pro
;
4346 SYS$
SETDFPROT (0, &fab_final_pro
);
4347 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4349 /* Create the new file with either default attrs or attrs copied
4351 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4353 SYS$
CLOSE (&fab
, 0, 0);
4354 /* As this is a "replacement" for creat, return a file descriptor
4355 opened for writing. */
4356 return open (new, O_WRONLY
);
4361 #include <varargs.h>
4364 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4369 sys_creat (va_alist
)
4372 va_list list_incrementer
;
4375 int rfd
; /* related file descriptor */
4376 int fd
; /* Our new file descriptor */
4383 extern int vms_stmlf_recfm
;
4386 va_start (list_incrementer
);
4387 name
= va_arg (list_incrementer
, char *);
4388 mode
= va_arg (list_incrementer
, int);
4390 rfd
= va_arg (list_incrementer
, int);
4391 va_end (list_incrementer
);
4394 /* Use information from the related file descriptor to set record
4395 format of the newly created file. */
4396 fstat (rfd
, &st_buf
);
4397 switch (st_buf
.st_fab_rfm
)
4400 strcpy (rfm
, "rfm = fix");
4401 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4402 strcpy (rat
, "rat = ");
4403 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4405 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4406 strcat (rat
, "ftn");
4407 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4408 strcat (rat
, "prn");
4409 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4410 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4411 strcat (rat
, ", blk");
4413 strcat (rat
, "blk");
4414 return creat (name
, 0, rfm
, rat
, mrs
);
4417 strcpy (rfm
, "rfm = vfc");
4418 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4419 strcpy (rat
, "rat = ");
4420 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4422 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4423 strcat (rat
, "ftn");
4424 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4425 strcat (rat
, "prn");
4426 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4427 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4428 strcat (rat
, ", blk");
4430 strcat (rat
, "blk");
4431 return creat (name
, 0, rfm
, rat
, fsz
);
4434 strcpy (rfm
, "rfm = stm");
4438 strcpy (rfm
, "rfm = stmcr");
4442 strcpy (rfm
, "rfm = stmlf");
4446 strcpy (rfm
, "rfm = udf");
4450 strcpy (rfm
, "rfm = var");
4453 strcpy (rat
, "rat = ");
4454 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4456 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4457 strcat (rat
, "ftn");
4458 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4459 strcat (rat
, "prn");
4460 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4461 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4462 strcat (rat
, ", blk");
4464 strcat (rat
, "blk");
4468 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4469 strcpy (rat
, "rat=cr");
4471 /* Until the VAX C RTL fixes the many bugs with modes, always use
4472 mode 0 to get the user's default protection. */
4473 fd
= creat (name
, 0, rfm
, rat
);
4474 if (fd
< 0 && errno
== EEXIST
)
4476 if (unlink (name
) < 0)
4477 report_file_error ("delete", build_string (name
));
4478 fd
= creat (name
, 0, rfm
, rat
);
4484 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4486 sys_fwrite (ptr
, size
, num
, fp
)
4487 register char * ptr
;
4490 register int tot
= num
* size
;
4498 * The VMS C library routine creat actually creates a new version of an
4499 * existing file rather than truncating the old version. There are times
4500 * when this is not the desired behavior, for instance, when writing an
4501 * auto save file (you only want one version), or when you don't have
4502 * write permission in the directory containing the file (but the file
4503 * itself is writable). Hence this routine, which is equivalent to
4504 * "close (creat (fn, 0));" on Unix if fn already exists.
4510 struct FAB xfab
= cc$rms_fab
;
4511 struct RAB xrab
= cc$rms_rab
;
4514 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4515 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4516 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4517 xfab
.fab$l_fna
= fn
;
4518 xfab
.fab$b_fns
= strlen (fn
);
4519 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4521 xrab
.rab$l_fab
= &xfab
;
4523 /* This gibberish opens the file, positions to the first record, and
4524 deletes all records from there until the end of file. */
4525 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4527 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4528 (SYS$
FIND (&xrab
) & 01) == 01 &&
4529 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4540 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4541 SYSPRV or a readable SYSUAF.DAT. */
4547 * Routine to read the VMS User Authorization File and return
4548 * a specific user's record.
4551 static struct UAF retuaf
;
4554 get_uaf_name (uname
)
4561 uaf_fab
= cc$rms_fab
;
4562 uaf_rab
= cc$rms_rab
;
4563 /* initialize fab fields */
4564 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4565 uaf_fab
.fab$b_fns
= 21;
4566 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4567 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4568 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4569 /* initialize rab fields */
4570 uaf_rab
.rab$l_fab
= &uaf_fab
;
4571 /* open the User Authorization File */
4572 status
= SYS$
OPEN (&uaf_fab
);
4576 vaxc$errno
= status
;
4579 status
= SYS$
CONNECT (&uaf_rab
);
4583 vaxc$errno
= status
;
4586 /* read the requested record - index is in uname */
4587 uaf_rab
.rab$l_kbf
= uname
;
4588 uaf_rab
.rab$b_ksz
= strlen (uname
);
4589 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4590 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4591 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4592 status
= SYS$
GET (&uaf_rab
);
4596 vaxc$errno
= status
;
4599 /* close the User Authorization File */
4600 status
= SYS$
DISCONNECT (&uaf_rab
);
4604 vaxc$errno
= status
;
4607 status
= SYS$
CLOSE (&uaf_fab
);
4611 vaxc$errno
= status
;
4625 uaf_fab
= cc$rms_fab
;
4626 uaf_rab
= cc$rms_rab
;
4627 /* initialize fab fields */
4628 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4629 uaf_fab
.fab$b_fns
= 21;
4630 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4631 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4632 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4633 /* initialize rab fields */
4634 uaf_rab
.rab$l_fab
= &uaf_fab
;
4635 /* open the User Authorization File */
4636 status
= SYS$
OPEN (&uaf_fab
);
4640 vaxc$errno
= status
;
4643 status
= SYS$
CONNECT (&uaf_rab
);
4647 vaxc$errno
= status
;
4650 /* read the requested record - index is in uic */
4651 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4652 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4653 uaf_rab
.rab$b_ksz
= sizeof uic
;
4654 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4655 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4656 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4657 status
= SYS$
GET (&uaf_rab
);
4661 vaxc$errno
= status
;
4664 /* close the User Authorization File */
4665 status
= SYS$
DISCONNECT (&uaf_rab
);
4669 vaxc$errno
= status
;
4672 status
= SYS$
CLOSE (&uaf_fab
);
4676 vaxc$errno
= status
;
4682 static struct passwd retpw
;
4690 /* copy these out first because if the username is 32 chars, the next
4691 section will overwrite the first byte of the UIC */
4692 retpw
.pw_uid
= up
->uaf$w_mem
;
4693 retpw
.pw_gid
= up
->uaf$w_grp
;
4695 /* I suppose this is not the best style, to possibly overwrite one
4696 byte beyond the end of the field, but what the heck... */
4697 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4698 while (ptr
[-1] == ' ')
4701 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4703 /* the rest of these are counted ascii strings */
4704 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4705 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4706 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4707 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4708 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4709 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4710 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4711 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4715 #else /* not READ_SYSUAF */
4716 static struct passwd retpw
;
4717 #endif /* not READ_SYSUAF */
4728 unsigned char * full
;
4729 #endif /* READ_SYSUAF */
4734 if ('a' <= *ptr
&& *ptr
<= 'z')
4739 if (!(up
= get_uaf_name (name
)))
4741 return cnv_uaf_pw (up
);
4743 if (strcmp (name
, getenv ("USER")) == 0)
4745 retpw
.pw_uid
= getuid ();
4746 retpw
.pw_gid
= getgid ();
4747 strcpy (retpw
.pw_name
, name
);
4748 if (full
= egetenv ("FULLNAME"))
4749 strcpy (retpw
.pw_gecos
, full
);
4751 *retpw
.pw_gecos
= '\0';
4752 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4753 *retpw
.pw_shell
= '\0';
4758 #endif /* not READ_SYSUAF */
4768 if (!(up
= get_uaf_uic (uid
)))
4770 return cnv_uaf_pw (up
);
4772 if (uid
== sys_getuid ())
4773 return getpwnam (egetenv ("USER"));
4776 #endif /* not READ_SYSUAF */
4779 /* return total address space available to the current process. This is
4780 the sum of the current p0 size, p1 size and free page table entries
4786 unsigned long free_pages
;
4787 unsigned long frep0va
;
4788 unsigned long frep1va
;
4791 item_code
= JPI$_FREPTECNT
;
4792 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4795 vaxc$errno
= status
;
4800 item_code
= JPI$_FREP0VA
;
4801 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4804 vaxc$errno
= status
;
4807 item_code
= JPI$_FREP1VA
;
4808 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4811 vaxc$errno
= status
;
4815 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4819 define_logical_name (varname
, string
)
4823 struct dsc$descriptor_s strdsc
=
4824 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4825 struct dsc$descriptor_s envdsc
=
4826 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4827 struct dsc$descriptor_s lnmdsc
=
4828 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4830 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4834 delete_logical_name (varname
)
4837 struct dsc$descriptor_s envdsc
=
4838 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4839 struct dsc$descriptor_s lnmdsc
=
4840 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4842 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4860 error ("execvp system call not implemented");
4869 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4870 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4871 char from_esn
[NAM$C_MAXRSS
];
4872 char to_esn
[NAM$C_MAXRSS
];
4874 from_fab
.fab$l_fna
= from
;
4875 from_fab
.fab$b_fns
= strlen (from
);
4876 from_fab
.fab$l_nam
= &from_nam
;
4877 from_fab
.fab$l_fop
= FAB$M_NAM
;
4879 from_nam
.nam$l_esa
= from_esn
;
4880 from_nam
.nam$b_ess
= sizeof from_esn
;
4882 to_fab
.fab$l_fna
= to
;
4883 to_fab
.fab$b_fns
= strlen (to
);
4884 to_fab
.fab$l_nam
= &to_nam
;
4885 to_fab
.fab$l_fop
= FAB$M_NAM
;
4887 to_nam
.nam$l_esa
= to_esn
;
4888 to_nam
.nam$b_ess
= sizeof to_esn
;
4890 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4896 if (status
== RMS$_DEV
)
4900 vaxc$errno
= status
;
4905 /* This function renames a file like `rename', but it strips
4906 the version number from the "to" filename, such that the "to" file is
4907 will always be a new version. It also sets the file protection once it is
4908 finished. The protection that we will use is stored in fab_final_pro,
4909 and was set when we did a creat_copy_attrs to create the file that we
4912 We could use the chmod function, but Eunichs uses 3 bits per user category
4913 to describe the protection, and VMS uses 4 (write and delete are separate
4914 bits). To maintain portability, the VMS implementation of `chmod' wires
4915 the W and D bits together. */
4918 static struct fibdef fib
; /* We need this initialized to zero */
4919 char vms_file_written
[NAM$C_MAXRSS
];
4922 rename_sans_version (from
,to
)
4929 struct FAB to_fab
= cc$rms_fab
;
4930 struct NAM to_nam
= cc$rms_nam
;
4931 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4932 struct dsc$descriptor fib_attr
[2]
4933 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4934 char to_esn
[NAM$C_MAXRSS
];
4936 $
DESCRIPTOR (disk
,to_esn
);
4938 to_fab
.fab$l_fna
= to
;
4939 to_fab
.fab$b_fns
= strlen (to
);
4940 to_fab
.fab$l_nam
= &to_nam
;
4941 to_fab
.fab$l_fop
= FAB$M_NAM
;
4943 to_nam
.nam$l_esa
= to_esn
;
4944 to_nam
.nam$b_ess
= sizeof to_esn
;
4946 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4948 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4949 *(to_nam
.nam$l_ver
) = '\0';
4951 stat
= rename (from
, to_esn
);
4955 strcpy (vms_file_written
, to_esn
);
4957 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4958 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4960 /* Now set the file protection to the correct value */
4961 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4963 /* Copy these fields into the fib */
4964 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4965 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4966 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4968 SYS$
CLOSE (&to_fab
, 0, 0);
4970 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4973 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4974 0, 0, 0, &fib_attr
, 0);
4977 stat
= SYS$
DASSGN (chan
);
4980 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4991 unsigned short fid
[3];
4992 char esa
[NAM$C_MAXRSS
];
4995 fab
.fab$l_fop
= FAB$M_OFP
;
4996 fab
.fab$l_fna
= file
;
4997 fab
.fab$b_fns
= strlen (file
);
4998 fab
.fab$l_nam
= &nam
;
5001 nam
.nam$l_esa
= esa
;
5002 nam
.nam$b_ess
= NAM$C_MAXRSS
;
5004 status
= SYS$
PARSE (&fab
);
5005 if ((status
& 1) == 0)
5008 vaxc$errno
= status
;
5011 status
= SYS$
SEARCH (&fab
);
5012 if ((status
& 1) == 0)
5015 vaxc$errno
= status
;
5019 fid
[0] = nam
.nam$w_fid
[0];
5020 fid
[1] = nam
.nam$w_fid
[1];
5021 fid
[2] = nam
.nam$w_fid
[2];
5023 fab
.fab$l_fna
= new;
5024 fab
.fab$b_fns
= strlen (new);
5026 status
= SYS$
PARSE (&fab
);
5027 if ((status
& 1) == 0)
5030 vaxc$errno
= status
;
5034 nam
.nam$w_fid
[0] = fid
[0];
5035 nam
.nam$w_fid
[1] = fid
[1];
5036 nam
.nam$w_fid
[2] = fid
[2];
5038 nam
.nam$l_esa
= nam
.nam$l_name
;
5039 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
5041 status
= SYS$
ENTER (&fab
);
5042 if ((status
& 1) == 0)
5045 vaxc$errno
= status
;
5056 printf ("%s not yet implemented\r\n", badfunc
);
5064 /* Arrange to return a range centered on zero. */
5065 return rand () - (1 << 30);
5077 /* Called from init_sys_modes. */
5083 /* If we're not on an HFT we shouldn't do any of this. We determine
5084 if we are on an HFT by trying to get an HFT error code. If this
5085 call fails, we're not on an HFT. */
5087 if (ioctl (0, HFQERROR
, &junk
) < 0)
5089 #else /* not IBMR2AIX */
5090 if (ioctl (0, HFQEIO
, 0) < 0)
5092 #endif /* not IBMR2AIX */
5094 /* On AIX the default hft keyboard mapping uses backspace rather than delete
5095 as the rubout key's ASCII code. Here this is changed. The bug is that
5096 there's no way to determine the old mapping, so in reset_sys_modes
5097 we need to assume that the normal map had been present. Of course, this
5098 code also doesn't help if on a terminal emulator which doesn't understand
5102 struct hfkeymap keymap
;
5104 buf
.hf_bufp
= (char *)&keymap
;
5105 buf
.hf_buflen
= sizeof (keymap
);
5106 keymap
.hf_nkeys
= 2;
5107 keymap
.hfkey
[0].hf_kpos
= 15;
5108 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5110 keymap
.hfkey
[0].hf_keyidh
= '<';
5111 #else /* not IBMR2AIX */
5112 keymap
.hfkey
[0].hf_page
= '<';
5113 #endif /* not IBMR2AIX */
5114 keymap
.hfkey
[0].hf_char
= 127;
5115 keymap
.hfkey
[1].hf_kpos
= 15;
5116 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5118 keymap
.hfkey
[1].hf_keyidh
= '<';
5119 #else /* not IBMR2AIX */
5120 keymap
.hfkey
[1].hf_page
= '<';
5121 #endif /* not IBMR2AIX */
5122 keymap
.hfkey
[1].hf_char
= 127;
5123 hftctl (0, HFSKBD
, &buf
);
5125 /* The HFT system on AIX doesn't optimize for scrolling, so it's really ugly
5127 line_ins_del_ok
= char_ins_del_ok
= 0;
5130 /* Reset the rubout key to backspace. */
5136 struct hfkeymap keymap
;
5140 if (ioctl (0, HFQERROR
, &junk
) < 0)
5142 #else /* not IBMR2AIX */
5143 if (ioctl (0, HFQEIO
, 0) < 0)
5145 #endif /* not IBMR2AIX */
5147 buf
.hf_bufp
= (char *)&keymap
;
5148 buf
.hf_buflen
= sizeof (keymap
);
5149 keymap
.hf_nkeys
= 2;
5150 keymap
.hfkey
[0].hf_kpos
= 15;
5151 keymap
.hfkey
[0].hf_kstate
= HFMAPCHAR
| HFSHFNONE
;
5153 keymap
.hfkey
[0].hf_keyidh
= '<';
5154 #else /* not IBMR2AIX */
5155 keymap
.hfkey
[0].hf_page
= '<';
5156 #endif /* not IBMR2AIX */
5157 keymap
.hfkey
[0].hf_char
= 8;
5158 keymap
.hfkey
[1].hf_kpos
= 15;
5159 keymap
.hfkey
[1].hf_kstate
= HFMAPCHAR
| HFSHFSHFT
;
5161 keymap
.hfkey
[1].hf_keyidh
= '<';
5162 #else /* not IBMR2AIX */
5163 keymap
.hfkey
[1].hf_page
= '<';
5164 #endif /* not IBMR2AIX */
5165 keymap
.hfkey
[1].hf_char
= 8;
5166 hftctl (0, HFSKBD
, &buf
);
5173 /* These are included on Sunos 4.1 when we do not use shared libraries.
5174 X11 libraries may refer to these functions but (we hope) do not
5175 actually call them. */
5195 #endif /* USE_DL_STUBS */
5204 register int length
;
5208 long max_str
= 65535;
5210 while (length
> max_str
) {
5211 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5216 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5218 while (length
-- > 0)
5220 #endif /* not VMS */
5223 #endif /* no bzero */
5224 #endif /* BSTRING */
5226 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5229 /* Saying `void' requires a declaration, above, where bcopy is used
5230 and that declaration causes pain for systems where bcopy is a macro. */
5231 bcopy (b1
, b2
, length
)
5234 register int length
;
5237 long max_str
= 65535;
5239 while (length
> max_str
) {
5240 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5246 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5248 while (length
-- > 0)
5250 #endif /* not VMS */
5252 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5257 bcmp (b1
, b2
, length
) /* This could be a macro! */
5260 register int length
;
5263 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5264 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5266 return STR$
COMPARE (&src1
, &src2
);
5268 while (length
-- > 0)
5273 #endif /* not VMS */
5275 #endif /* no bcmp */
5276 #endif /* not BSTRING */
5278 #ifndef HAVE_STRSIGNAL
5285 if (0 <= code
&& code
< NSIG
)
5288 signame
= sys_errlist
[code
];
5290 /* Cast to suppress warning if the table has const char *. */
5291 signame
= (char *) sys_siglist
[code
];
5297 #endif /* HAVE_STRSIGNAL */