1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1999, 2000, 2001,
3 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
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 /* Don't prototype srandom; it takes an unsigned argument on
36 some systems, and an unsigned long on others, like FreeBSD
38 extern void srandom
P_ ((unsigned int));
42 /* The w32 build defines select stuff in w32.h, which is included by
43 sys/select.h (included below). */
45 #include "sysselect.h"
48 #include "blockinput.h"
52 #define write sys_write
57 #endif /* not WINDOWSNT */
59 /* Does anyone other than VMS need this? */
61 #define sys_fwrite fwrite
66 #include <sys/types.h>
71 #if !defined (USG) || defined (BSD_PGRPS)
73 #define setpgrp setpgid
77 /* Get SI_SRPC_DOMAIN, if it is available. */
78 #ifdef HAVE_SYS_SYSTEMINFO_H
79 #include <sys/systeminfo.h>
82 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
86 #include <sys/param.h>
90 extern unsigned start
__asm__ ("start");
112 #include <sys/file.h>
120 #define MAXIOSIZE (32 * PAGESIZE) /* Don't I/O more than 32 blocks at a time */
124 #include <sys/file.h>
132 #include <sys/ioctl.h>
139 #include <sys/utsname.h>
141 #if defined (TIOCGWINSZ)
143 #include <sys/stream.h>
144 #include <sys/ptem.h>
146 #endif /* TIOCGWINSZ */
149 extern int quit_char
;
151 #include "keyboard.h"
154 #include "termhooks.h"
155 #include "termchar.h"
156 #include "termopts.h"
157 #include "dispextern.h"
159 #include "cm.h" /* for reset_sys_modes */
161 /* For serial_configure and serial_open. */
162 extern Lisp_Object QCport
, QCspeed
, QCprocess
;
163 extern Lisp_Object QCbytesize
, QCstopbits
, QCparity
, Qodd
, Qeven
;
164 extern Lisp_Object QCflowcontrol
, Qhw
, Qsw
, QCsummary
;
168 /* In process.h which conflicts with the local copy. */
170 int _cdecl
_spawnlp (int, const char *, const char *, ...);
171 int _cdecl
_getpid (void);
172 extern char *getwd (char *);
175 #ifdef NONSYSTEM_DIR_LIBRARY
177 #endif /* NONSYSTEM_DIR_LIBRARY */
179 #include "syssignal.h"
186 #ifndef HAVE_STRUCT_UTIMBUF
187 /* We want to use utime rather than utimes, but we couldn't find the
188 structure declaration. We'll use the traditional one. */
196 /* LPASS8 is new in 4.3, and makes cbreak mode provide all 8 bits. */
201 static int baud_convert
[] =
206 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
207 1800, 2400, 4800, 9600, 19200, 38400
214 #if defined (HAVE_LIBNCURSES) && ! defined (NCURSES_OSPEED_T)
216 #if defined (HAVE_TERMIOS_H) && defined (GNU_LINUX)
224 void croak
P_ ((char *)) NO_RETURN
;
226 /* Temporary used by `sigblock' when defined in terms of signprocmask. */
228 SIGMASKTYPE sigprocmask_set
;
231 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
233 /* Return the current working directory. Returns NULL on errors.
234 Any other returned value must be freed with free. This is used
235 only when get_current_dir_name is not defined on the system. */
237 get_current_dir_name ()
241 struct stat dotstat
, pwdstat
;
242 /* If PWD is accurate, use it instead of calling getwd. PWD is
243 sometimes a nicer name, and using it may avoid a fatal error if a
244 parent directory is searchable but not readable. */
245 if ((pwd
= getenv ("PWD")) != 0
246 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
247 && stat (pwd
, &pwdstat
) == 0
248 && stat (".", &dotstat
) == 0
249 && dotstat
.st_ino
== pwdstat
.st_ino
250 && dotstat
.st_dev
== pwdstat
.st_dev
252 && strlen (pwd
) < MAXPATHLEN
256 buf
= (char *) malloc (strlen (pwd
) + 1);
264 size_t buf_size
= 1024;
265 buf
= (char *) malloc (buf_size
);
270 if (getcwd (buf
, buf_size
) == buf
)
274 int tmp_errno
= errno
;
280 buf
= (char *) realloc (buf
, buf_size
);
288 /* We need MAXPATHLEN here. */
289 buf
= (char *) malloc (MAXPATHLEN
+ 1);
292 if (getwd (buf
) == NULL
)
294 int tmp_errno
= errno
;
306 /* Discard pending input on all input descriptors. */
312 struct emacs_tty buf
;
319 SYS$
QIOW (0, fileno (CURTTY()->input
), IO$_READVBLK
|IO$M_PURGE
, input_iosb
, 0, 0,
320 &buf
.main
, 0, 0, terminator_mask
, 0, 0);
323 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
324 while (dos_keyread () != -1)
326 #else /* not MSDOS */
328 struct tty_display_info
*tty
;
329 for (tty
= tty_list
; tty
; tty
= tty
->next
)
331 if (tty
->input
) /* Is the device suspended? */
333 EMACS_GET_TTY (fileno (tty
->input
), &buf
);
334 EMACS_SET_TTY (fileno (tty
->input
), &buf
, 0);
338 #endif /* not MSDOS */
340 #endif /* not WINDOWSNT */
346 /* Arrange for character C to be read as the next input from
348 XXX What if we have multiple ttys?
354 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
357 /* Should perhaps error if in batch mode */
359 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
360 #else /* no TIOCSTI */
361 error ("Cannot stuff terminal input characters in this version of Unix");
362 #endif /* no TIOCSTI */
368 init_baud_rate (int fd
)
376 #else /* not DOS_NT */
380 SYS$
QIOW (0, fd
, IO$_SENSEMODE
, &sg
, 0, 0,
381 &sg
.class, 12, 0, 0, 0, 0 );
382 emacs_ospeed
= sg
.xmit_baud
;
389 emacs_ospeed
= cfgetospeed (&sg
);
390 #else /* neither VMS nor TERMIOS */
398 ioctl (fd
, TCGETA
, &sg
);
400 emacs_ospeed
= sg
.c_cflag
& CBAUD
;
401 #else /* neither VMS nor TERMIOS nor TERMIO */
404 sg
.sg_ospeed
= B9600
;
405 if (ioctl (fd
, TIOCGETP
, &sg
) < 0)
407 emacs_ospeed
= sg
.sg_ospeed
;
408 #endif /* not HAVE_TERMIO */
409 #endif /* not HAVE_TERMIOS */
411 #endif /* not DOS_NT */
414 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
415 ? baud_convert
[emacs_ospeed
] : 9600);
423 set_exclusive_use (fd
)
427 ioctl (fd
, FIOCLEX
, 0);
429 /* Ok to do nothing if this feature does not exist */
434 wait_without_blocking ()
437 wait3 (0, WNOHANG
| WUNTRACED
, 0);
439 croak ("wait_without_blocking");
441 synch_process_alive
= 0;
444 #endif /* not subprocesses */
446 int wait_debugging
; /* Set nonzero to make following function work under dbx
447 (at least for bsd). */
450 wait_for_termination_signal ()
453 /* Wait for subprocess with process id `pid' to terminate and
454 make sure it will get eliminated (not remain forever as a zombie) */
457 wait_for_termination (pid
)
466 status
= SYS$
FORCEX (&pid
, 0, 0);
469 #if defined (BSD_SYSTEM) || defined (HPUX)
470 /* Note that kill returns -1 even if the process is just a zombie now.
471 But inevitably a SIGCHLD interrupt should be generated
472 and child_sig will do wait3 and make the process go away. */
473 /* There is some indication that there is a bug involved with
474 termination of subprocesses, perhaps involving a kernel bug too,
475 but no idea what it is. Just as a hunch we signal SIGCHLD to see
476 if that causes the problem to go away or get worse. */
477 sigsetmask (sigmask (SIGCHLD
));
478 if (0 > kill (pid
, 0))
480 sigsetmask (SIGEMPTYMASK
);
481 kill (getpid (), SIGCHLD
);
487 sigpause (SIGEMPTYMASK
);
488 #else /* not BSD_SYSTEM, and not HPUX version >= 6 */
489 #ifdef POSIX_SIGNALS /* would this work for GNU/Linux as well? */
490 sigblock (sigmask (SIGCHLD
));
492 if (kill (pid
, 0) == -1 && errno
== ESRCH
)
494 sigunblock (sigmask (SIGCHLD
));
498 sigsuspend (&empty_mask
);
499 #else /* not POSIX_SIGNALS */
500 #ifdef HAVE_SYSV_SIGPAUSE
502 if (0 > kill (pid
, 0))
508 #else /* not HAVE_SYSV_SIGPAUSE */
512 #else /* not WINDOWSNT */
513 if (0 > kill (pid
, 0))
515 /* Using sleep instead of pause avoids timing error.
516 If the inferior dies just before the sleep,
517 we lose just one second. */
519 #endif /* not WINDOWSNT */
520 #endif /* not HAVE_SYSV_SIGPAUSE */
521 #endif /* not POSIX_SIGNALS */
522 #endif /* not BSD_SYSTEM, and not HPUX version >= 6 */
524 #else /* not subprocesses */
527 #else /* not __DJGPP__ > 1 */
528 if (kill (pid
, 0) < 0)
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 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
585 Some versions of GNU Hurd do not have FFDLY? */
587 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
588 /* No output delays */
590 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
591 /* No output delays */
594 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
595 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
596 #if 0 /* This causes bugs in (for instance) telnet to certain sites. */
597 s
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
598 #ifdef INLCR /* Just being cautious, since I can't check how
599 widespread INLCR is--rms. */
600 s
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
604 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
607 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
610 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
612 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
613 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
615 /* Said to be unnecessary: */
616 s
.main
.c_cc
[VMIN
] = 1; /* minimum number of characters to accept */
617 s
.main
.c_cc
[VTIME
] = 0; /* wait forever for at least 1 character */
620 s
.main
.c_lflag
|= ICANON
; /* Enable erase/kill and eof processing */
621 s
.main
.c_cc
[VEOF
] = 04; /* insure that EOF is Control-D */
622 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
623 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
626 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
629 #ifdef SIGNALS_VIA_CHARACTERS
630 /* the QUIT and INTR character are used in process_send_signal
631 so set them here to something useful. */
632 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
633 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
634 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
635 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
636 #endif /* not SIGNALS_VIA_CHARACTERS */
639 /* AIX enhanced edit loses NULs, so disable it */
642 s
.main
.c_iflag
&= ~ASCEDIT
;
644 /* Also, PTY overloads NUL and BREAK.
645 don't ignore break, but don't signal either, so it looks like NUL. */
646 s
.main
.c_iflag
&= ~IGNBRK
;
647 s
.main
.c_iflag
&= ~BRKINT
;
648 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
649 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
650 would force it to 0377. That looks like duplicated code. */
651 #ifndef SIGNALS_VIA_CHARACTERS
652 /* QUIT and INTR work better as signals, so disable character forms */
653 s
.main
.c_cc
[VQUIT
] = CDISABLE
;
654 s
.main
.c_cc
[VINTR
] = CDISABLE
;
655 s
.main
.c_lflag
&= ~ISIG
;
656 #endif /* no TIOCGPGRP or no TIOCGLTC or no TIOCGETC */
657 s
.main
.c_cc
[VEOL
] = CDISABLE
;
658 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
661 #else /* not HAVE_TERMIO */
663 s
.main
.sg_flags
&= ~(ECHO
| CRMOD
| ANYP
| ALLDELAY
| RAW
| LCASE
665 s
.main
.sg_flags
|= LPASS8
;
666 s
.main
.sg_erase
= 0377;
667 s
.main
.sg_kill
= 0377;
668 s
.lmode
= LLITOUT
| s
.lmode
; /* Don't strip 8th bit */
670 #endif /* not HAVE_TERMIO */
672 EMACS_SET_TTY (out
, &s
, 0);
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. */
766 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
768 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
771 struct save_signal saved_handlers
[5];
773 unsigned char *str
= 0;
776 saved_handlers
[0].code
= SIGINT
;
777 saved_handlers
[1].code
= SIGQUIT
;
778 saved_handlers
[2].code
= SIGTERM
;
780 saved_handlers
[3].code
= SIGIO
;
781 saved_handlers
[4].code
= 0;
783 saved_handlers
[3].code
= 0;
786 /* Mentioning current_buffer->buffer would mean including buffer.h,
787 which somehow wedges the hp compiler. So instead... */
789 dir
= intern ("default-directory");
790 if (NILP (Fboundp (dir
)))
792 dir
= Fsymbol_value (dir
);
796 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
797 str
= (unsigned char *) alloca (SCHARS (dir
) + 2);
799 bcopy (SDATA (dir
), str
, len
);
800 if (str
[len
- 1] != '/') str
[len
++] = '/';
807 save_signal_handlers (saved_handlers
);
808 synch_process_alive
= 1;
809 #endif /* __DJGPP__ > 1 */
813 error ("Can't spawn subshell");
820 #ifdef DOS_NT /* MW, Aug 1993 */
823 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
826 sh
= (char *) egetenv ("SHELL");
830 /* Use our buffer's default directory for the subshell. */
832 chdir ((char *) str
);
835 close_process_descs (); /* Close Emacs's pipes/ptys */
838 #ifdef SET_EMACS_PRIORITY
840 extern EMACS_INT emacs_priority
;
842 if (emacs_priority
< 0)
843 nice (-emacs_priority
);
847 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
849 char *epwd
= getenv ("PWD");
850 char old_pwd
[MAXPATHLEN
+1+4];
852 /* If PWD is set, pass it with corrected value. */
855 strcpy (old_pwd
, epwd
);
856 if (str
[len
- 1] == '/')
858 setenv ("PWD", str
, 1);
863 putenv (old_pwd
); /* restore previous value */
865 #if 0 /* This is also reported if last command executed in subshell failed, KFS */
867 report_file_error ("Can't execute subshell", Fcons (build_string (sh
), Qnil
));
869 #else /* not MSDOS */
871 /* Waits for process completion */
872 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
875 write (1, "Can't execute subshell", 22);
876 #else /* not WINDOWSNT */
877 execlp (sh
, sh
, (char *) 0);
878 write (1, "Can't execute subshell", 22);
880 #endif /* not WINDOWSNT */
881 #endif /* not MSDOS */
884 /* Do this now if we did not do it before. */
885 #if !defined (MSDOS) || __DJGPP__ == 1
886 save_signal_handlers (saved_handlers
);
887 synch_process_alive
= 1;
891 wait_for_termination (pid
);
893 restore_signal_handlers (saved_handlers
);
894 synch_process_alive
= 0;
899 save_signal_handlers (saved_handlers
)
900 struct save_signal
*saved_handlers
;
902 while (saved_handlers
->code
)
904 saved_handlers
->handler
905 = (SIGTYPE (*) P_ ((int))) signal (saved_handlers
->code
, SIG_IGN
);
911 restore_signal_handlers (saved_handlers
)
912 struct save_signal
*saved_handlers
;
914 while (saved_handlers
->code
)
916 signal (saved_handlers
->code
, saved_handlers
->handler
);
922 /* If SIGIO is broken, don't do anything. */
939 unrequest_sigio (void)
946 int old_fcntl_flags
[MAXDESC
];
953 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
954 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
956 interrupts_deferred
= 0;
964 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
968 #ifdef FASYNC /* F_SETFL does not imply existence of FASYNC */
969 /* XXX Uhm, FASYNC is not used anymore here. */
970 /* XXX Yeah, but you need it for SIGIO, don't you? */
979 sigunblock (sigmask (SIGWINCH
));
981 sigunblock (sigmask (SIGIO
));
983 interrupts_deferred
= 0;
987 unrequest_sigio (void)
992 #if 0 /* XXX What's wrong with blocking SIGIO under X? */
998 sigblock (sigmask (SIGWINCH
));
1000 sigblock (sigmask (SIGIO
));
1001 interrupts_deferred
= 1;
1004 #else /* no FASYNC */
1010 if (noninteractive
|| read_socket_hook
)
1013 croak ("request_sigio");
1019 if (noninteractive
|| read_socket_hook
)
1022 croak ("unrequest_sigio");
1027 #endif /* F_SETFL */
1030 /* Saving and restoring the process group of Emacs's terminal. */
1034 /* The process group of which Emacs was a member when it initially
1037 If Emacs was in its own process group (i.e. inherited_pgroup ==
1038 getpid ()), then we know we're running under a shell with job
1039 control (Emacs would never be run as part of a pipeline).
1042 If Emacs was not in its own process group, then we know we're
1043 running under a shell (or a caller) that doesn't know how to
1044 separate itself from Emacs (like sh). Emacs must be in its own
1045 process group in order to receive SIGIO correctly. In this
1046 situation, we put ourselves in our own pgroup, forcibly set the
1047 tty's pgroup to our pgroup, and make sure to restore and reinstate
1048 the tty's pgroup just like any other terminal setting. If
1049 inherited_group was not the tty's pgroup, then we'll get a
1050 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
1051 it goes foreground in the future, which is what should happen.
1053 This variable is initialized in emacs.c. */
1054 int inherited_pgroup
;
1056 /* Split off the foreground process group to Emacs alone. When we are
1057 in the foreground, but not started in our own process group,
1058 redirect the tty device handle FD to point to our own process
1059 group. We need to be in our own process group to receive SIGIO
1062 narrow_foreground_group (int fd
)
1066 setpgrp (0, inherited_pgroup
);
1068 /* XXX inherited_pgroup should not be zero here, but GTK seems to
1070 if (! inherited_pgroup
)
1071 abort (); /* Should not happen. */
1073 if (inherited_pgroup
!= me
)
1074 EMACS_SET_TTY_PGRP (fd
, &me
); /* XXX This only works on the controlling tty. */
1078 /* Set the tty to our original foreground group. */
1080 widen_foreground_group (int fd
)
1082 if (inherited_pgroup
!= getpid ())
1083 EMACS_SET_TTY_PGRP (fd
, &inherited_pgroup
);
1084 setpgrp (0, inherited_pgroup
);
1087 #endif /* BSD_PGRPS */
1089 /* Getting and setting emacs_tty structures. */
1091 /* Set *TC to the parameters associated with the terminal FD.
1092 Return zero if all's well, or -1 if we ran into an error we
1093 couldn't deal with. */
1095 emacs_get_tty (fd
, settings
)
1097 struct emacs_tty
*settings
;
1099 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
1101 /* We have those nifty POSIX tcmumbleattr functions. */
1102 bzero (&settings
->main
, sizeof (settings
->main
));
1103 if (tcgetattr (fd
, &settings
->main
) < 0)
1108 /* The SYSV-style interface? */
1109 if (ioctl (fd
, TCGETA
, &settings
->main
) < 0)
1114 /* Vehemently Monstrous System? :-) */
1115 if (! (SYS$
QIOW (0, fd
, IO$_SENSEMODE
, settings
, 0, 0,
1116 &settings
->main
.class, 12, 0, 0, 0, 0)
1122 /* I give up - I hope you have the BSD ioctls. */
1123 if (ioctl (fd
, TIOCGETP
, &settings
->main
) < 0)
1125 #endif /* not DOS_NT */
1130 /* Suivant - Do we have to get struct ltchars data? */
1132 if (ioctl (fd
, TIOCGLTC
, &settings
->ltchars
) < 0)
1136 /* How about a struct tchars and a wordful of lmode bits? */
1138 if (ioctl (fd
, TIOCGETC
, &settings
->tchars
) < 0
1139 || ioctl (fd
, TIOCLGET
, &settings
->lmode
) < 0)
1143 /* We have survived the tempest. */
1148 /* Set the parameters of the tty on FD according to the contents of
1149 *SETTINGS. If FLUSHP is non-zero, we discard input.
1150 Return 0 if all went well, and -1 if anything failed. */
1153 emacs_set_tty (fd
, settings
, flushp
)
1155 struct emacs_tty
*settings
;
1158 /* Set the primary parameters - baud rate, character size, etcetera. */
1161 /* We have those nifty POSIX tcmumbleattr functions.
1162 William J. Smith <wjs@wiis.wang.com> writes:
1163 "POSIX 1003.1 defines tcsetattr to return success if it was
1164 able to perform any of the requested actions, even if some
1165 of the requested actions could not be performed.
1166 We must read settings back to ensure tty setup properly.
1167 AIX requires this to keep tty from hanging occasionally." */
1168 /* This make sure that we don't loop indefinitely in here. */
1169 for (i
= 0 ; i
< 10 ; i
++)
1170 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
1181 bzero (&new, sizeof (new));
1182 /* Get the current settings, and see if they're what we asked for. */
1183 tcgetattr (fd
, &new);
1184 /* We cannot use memcmp on the whole structure here because under
1185 * aix386 the termios structure has some reserved field that may
1188 if ( new.c_iflag
== settings
->main
.c_iflag
1189 && new.c_oflag
== settings
->main
.c_oflag
1190 && new.c_cflag
== settings
->main
.c_cflag
1191 && new.c_lflag
== settings
->main
.c_lflag
1192 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
1200 /* The SYSV-style interface? */
1201 if (ioctl (fd
, flushp
? TCSETAF
: TCSETAW
, &settings
->main
) < 0)
1206 /* Vehemently Monstrous System? :-) */
1207 if (! (SYS$
QIOW (0, fd
, IO$_SETMODE
, &input_iosb
, 0, 0,
1208 &settings
->main
.class, 12, 0, 0, 0, 0)
1214 /* I give up - I hope you have the BSD ioctls. */
1215 if (ioctl (fd
, (flushp
) ? TIOCSETP
: TIOCSETN
, &settings
->main
) < 0)
1217 #endif /* not DOS_NT */
1223 /* Suivant - Do we have to get struct ltchars data? */
1225 if (ioctl (fd
, TIOCSLTC
, &settings
->ltchars
) < 0)
1229 /* How about a struct tchars and a wordful of lmode bits? */
1231 if (ioctl (fd
, TIOCSETC
, &settings
->tchars
) < 0
1232 || ioctl (fd
, TIOCLSET
, &settings
->lmode
) < 0)
1236 /* We have survived the tempest. */
1243 int old_fcntl_owner
[MAXDESC
];
1244 #endif /* F_SETOWN */
1246 /* This may also be defined in stdio,
1247 but if so, this does no harm,
1248 and using the same name avoids wasting the other one's space. */
1250 #if defined (USG) || defined (DGUX)
1251 unsigned char _sobuf
[BUFSIZ
+8];
1253 char _sobuf
[BUFSIZ
];
1257 static struct ltchars new_ltchars
= {-1,-1,-1,-1,-1,-1};
1260 static struct tchars new_tchars
= {-1,-1,-1,-1,-1,-1};
1263 /* Initialize the terminal mode on all tty devices that are currently
1267 init_all_sys_modes (void)
1269 struct tty_display_info
*tty
;
1270 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1271 init_sys_modes (tty
);
1274 /* Initialize the terminal mode on the given tty device. */
1277 init_sys_modes (tty_out
)
1278 struct tty_display_info
*tty_out
;
1280 struct emacs_tty tty
;
1284 static int oob_chars
[2] = {0, 1 << 7}; /* catch C-g's */
1285 extern int (*interrupt_signal
) ();
1289 Vtty_erase_char
= Qnil
;
1294 if (!tty_out
->output
)
1295 return; /* The tty is suspended. */
1299 input_ef
= get_kbd_event_flag ();
1300 /* LIB$GET_EF (&input_ef); */
1301 SYS$
CLREF (input_ef
);
1302 waiting_for_ast
= 0;
1304 timer_ef
= get_timer_event_flag ();
1305 /* LIB$GET_EF (&timer_ef); */
1306 SYS$
CLREF (timer_ef
);
1310 LIB$
GET_EF (&process_ef
);
1311 SYS$
CLREF (process_ef
);
1313 if (input_ef
/ 32 != process_ef
/ 32)
1314 croak ("Input and process event flags in different clusters.");
1316 if (input_ef
/ 32 != timer_ef
/ 32)
1317 croak ("Input and timer event flags in different clusters.");
1319 input_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1320 ((unsigned) 1 << (process_ef
% 32));
1322 timer_eflist
= ((unsigned) 1 << (input_ef
% 32)) |
1323 ((unsigned) 1 << (timer_ef
% 32));
1325 sys_access_reinit ();
1331 /* read_socket_hook is not global anymore. I think doing this
1332 unconditionally will not cause any problems. */
1333 if (! read_socket_hook
&& EQ (Vinitial_window_system
, Qnil
))
1335 narrow_foreground_group (fileno (tty_out
->input
));
1338 if (! tty_out
->old_tty
)
1339 tty_out
->old_tty
= (struct emacs_tty
*) xmalloc (sizeof (struct emacs_tty
));
1341 EMACS_GET_TTY (fileno (tty_out
->input
), tty_out
->old_tty
);
1343 tty
= *tty_out
->old_tty
;
1345 #if defined (HAVE_TERMIO) || defined (HAVE_TERMIOS)
1346 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
1348 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
1349 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
1350 #ifdef INLCR /* I'm just being cautious,
1351 since I can't check how widespread INLCR is--rms. */
1352 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
1355 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
1357 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
1358 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
1360 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
1362 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
1363 if (tty_out
->flow_control
)
1365 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
1367 tty
.main
.c_iflag
&= ~IXANY
;
1371 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
1372 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
1374 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
1376 if (tty_out
->meta_key
)
1378 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
1379 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
1382 if (tty_out
->input
== stdin
)
1384 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
1385 /* Set up C-g for both SIGQUIT and SIGINT.
1386 We don't know which we will get, but we handle both alike
1387 so which one it really gives us does not matter. */
1388 tty
.main
.c_cc
[VQUIT
] = quit_char
;
1392 /* We normally don't get interrupt or quit signals from tty
1393 devices other than our controlling terminal; therefore,
1394 we must handle C-g as normal input. Unfortunately, this
1395 means that the interrupt and quit feature must be
1396 disabled on secondary ttys, or we would not even see the
1399 Note that even though emacsclient could have special code
1400 to pass SIGINT to Emacs, we should _not_ enable
1401 interrupt/quit keys for emacsclient frames. This means
1402 that we can't break out of loops in C code from a
1403 secondary tty frame, but we can always decide what
1404 display the C-g came from, which is more important from a
1405 usability point of view. (Consider the case when two
1406 people work together using the same Emacs instance.) */
1407 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
1408 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
1410 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
1411 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
1413 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
1417 #if defined (mips) || defined (HAVE_TCATTR)
1419 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off mips handling of C-z. */
1422 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off mips handling of C-y. */
1423 #endif /* V_DSUSP */
1424 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
1425 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1428 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
1431 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
1432 #endif /* VREPRINT */
1434 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
1435 #endif /* VWERASE */
1437 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
1438 #endif /* VDISCARD */
1440 if (tty_out
->flow_control
)
1443 tty
.main
.c_cc
[VSTART
] = '\021';
1446 tty
.main
.c_cc
[VSTOP
] = '\023';
1452 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1455 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1458 #endif /* mips or HAVE_TCATTR */
1462 /* AIX enhanced edit loses NULs, so disable it. */
1463 tty
.main
.c_line
= 0;
1464 tty
.main
.c_iflag
&= ~ASCEDIT
;
1466 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1467 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1468 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1469 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1470 #endif /* IBMR2AIX */
1471 if (tty_out
->flow_control
)
1474 tty
.main
.c_cc
[VSTART
] = '\021';
1477 tty
.main
.c_cc
[VSTOP
] = '\023';
1480 /* Also, PTY overloads NUL and BREAK.
1481 don't ignore break, but don't signal either, so it looks like NUL.
1482 This really serves a purpose only if running in an XTERM window
1483 or via TELNET or the like, but does no harm elsewhere. */
1484 tty
.main
.c_iflag
&= ~IGNBRK
;
1485 tty
.main
.c_iflag
&= ~BRKINT
;
1487 #else /* if not HAVE_TERMIO */
1489 tty
.main
.tt_char
|= TT$M_NOECHO
;
1491 tty
.main
.tt_char
|= TT$M_EIGHTBIT
;
1492 if (tty_out
->flow_control
)
1493 tty
.main
.tt_char
|= TT$M_TTSYNC
;
1495 tty
.main
.tt_char
&= ~TT$M_TTSYNC
;
1496 tty
.main
.tt2_char
|= TT2$M_PASTHRU
| TT2$M_XON
;
1497 #else /* not VMS (BSD, that is) */
1499 XSETINT (Vtty_erase_char
, tty
.main
.sg_erase
);
1500 tty
.main
.sg_flags
&= ~(ECHO
| CRMOD
| XTABS
);
1502 tty
.main
.sg_flags
|= ANYP
;
1503 tty
.main
.sg_flags
|= interrupt_input
? RAW
: CBREAK
;
1504 #endif /* not DOS_NT */
1505 #endif /* not VMS (BSD, that is) */
1506 #endif /* not HAVE_TERMIO */
1508 /* If going to use CBREAK mode, we must request C-g to interrupt
1509 and turn off start and stop chars, etc. If not going to use
1510 CBREAK mode, do this anyway so as to turn off local flow
1511 control for user coming over network on 4.2; in this case,
1512 only t_stopc and t_startc really matter. */
1515 /* Note: if not using CBREAK mode, it makes no difference how we
1517 tty
.tchars
= new_tchars
;
1518 tty
.tchars
.t_intrc
= quit_char
;
1519 if (tty_out
->flow_control
)
1521 tty
.tchars
.t_startc
= '\021';
1522 tty
.tchars
.t_stopc
= '\023';
1525 tty
.lmode
= LDECCTQ
| LLITOUT
| LPASS8
| LNOFLSH
| tty_out
->old_tty
.lmode
;
1527 #endif /* HAVE_TCHARS */
1528 #endif /* not HAVE_TERMIO */
1531 tty
.ltchars
= new_ltchars
;
1532 #endif /* HAVE_LTCHARS */
1533 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1534 if (!tty_out
->term_initted
)
1535 internal_terminal_init ();
1539 EMACS_SET_TTY (fileno (tty_out
->input
), &tty
, 0);
1541 /* This code added to insure that, if flow-control is not to be used,
1542 we have an unlocked terminal at the start. */
1545 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1548 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1551 #if defined (HAVE_TERMIOS) || defined (HPUX)
1553 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1558 /* Appears to do nothing when in PASTHRU mode.
1559 SYS$QIOW (0, fileno (tty_out->input), IO$_SETMODE|IO$M_OUTBAND, 0, 0, 0,
1560 interrupt_signal, oob_chars, 0, 0, 0, 0);
1562 queue_kbd_input (0);
1566 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1567 if (interrupt_input
)
1569 old_fcntl_owner
[fileno (tty_out
->input
)] =
1570 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1571 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1572 init_sigio (fileno (tty_out
->input
));
1574 if (gpm_tty
== tty_out
)
1576 /* Arrange for mouse events to give us SIGIO signals. */
1577 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1578 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1579 init_sigio (gpm_fd
);
1581 #endif /* HAVE_GPM */
1583 #endif /* F_GETOWN */
1584 #endif /* F_SETFL */
1586 #ifdef VMS /* VMS sometimes has this symbol but lacks setvbuf. */
1590 /* This symbol is defined on recent USG systems.
1591 Someone says without this call USG won't really buffer the file
1592 even with a call to setbuf. */
1593 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1595 setbuf (tty_out
->output
, (char *) _sobuf
);
1598 if (tty_out
->terminal
->set_terminal_modes_hook
)
1599 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1601 if (!tty_out
->term_initted
)
1603 Lisp_Object tail
, frame
;
1604 FOR_EACH_FRAME (tail
, frame
)
1606 /* XXX This needs to be revised. */
1607 if (FRAME_TERMCAP_P (XFRAME (frame
))
1608 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1609 init_frame_faces (XFRAME (frame
));
1613 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1615 /* XXX This seems wrong on multi-tty. */
1616 if (display_completed
)
1617 direct_output_forward_char (0);
1621 Lisp_Object tail
, frame
;
1623 FOR_EACH_FRAME (tail
, frame
)
1625 if (FRAME_TERMCAP_P (XFRAME (frame
))
1626 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1627 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1631 tty_out
->term_initted
= 1;
1634 /* Return nonzero if safe to use tabs in output.
1635 At the time this is called, init_sys_modes has not been done yet. */
1638 tabs_safe_p (int fd
)
1640 struct emacs_tty etty
;
1642 EMACS_GET_TTY (fd
, &etty
);
1643 return EMACS_TTY_TABS_OK (&etty
);
1646 /* Get terminal size from system.
1647 Store number of lines into *HEIGHTP and width into *WIDTHP.
1648 We store 0 if there's no valid information. */
1651 get_tty_size (int fd
, int *widthp
, int *heightp
)
1657 struct winsize size
;
1659 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1660 *widthp
= *heightp
= 0;
1663 *widthp
= size
.ws_col
;
1664 *heightp
= size
.ws_row
;
1670 /* SunOS - style. */
1671 struct ttysize size
;
1673 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1674 *widthp
= *heightp
= 0;
1677 *widthp
= size
.ts_cols
;
1678 *heightp
= size
.ts_lines
;
1684 /* Use a fresh channel since the current one may have stale info
1685 (for example, from prior to a suspend); and to avoid a dependency
1686 in the init sequence. */
1688 struct sensemode tty
;
1690 SYS$
ASSIGN (&input_dsc
, &chan
, 0, 0);
1691 SYS$
QIOW (0, chan
, IO$_SENSEMODE
, &tty
, 0, 0,
1692 &tty
.class, 12, 0, 0, 0, 0);
1694 *widthp
= tty
.scr_wid
;
1695 *heightp
= tty
.scr_len
;
1699 *widthp
= ScreenCols ();
1700 *heightp
= ScreenRows ();
1701 #else /* system doesn't know size */
1705 #endif /* not VMS */
1706 #endif /* not SunOS-style */
1707 #endif /* not BSD-style */
1710 /* Set the logical window size associated with descriptor FD
1711 to HEIGHT and WIDTH. This is used mainly with ptys. */
1714 set_window_size (fd
, height
, width
)
1715 int fd
, height
, width
;
1720 struct winsize size
;
1721 size
.ws_row
= height
;
1722 size
.ws_col
= width
;
1724 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1725 return 0; /* error */
1732 /* SunOS - style. */
1733 struct ttysize size
;
1734 size
.ts_lines
= height
;
1735 size
.ts_cols
= width
;
1737 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1743 #endif /* not SunOS-style */
1744 #endif /* not BSD-style */
1749 /* Prepare all terminal devices for exiting Emacs. */
1752 reset_all_sys_modes (void)
1754 struct tty_display_info
*tty
;
1755 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1756 reset_sys_modes (tty
);
1759 /* Prepare the terminal for closing it; move the cursor to the
1760 bottom of the frame, turn off interrupt-driven I/O, etc. */
1763 reset_sys_modes (tty_out
)
1764 struct tty_display_info
*tty_out
;
1771 if (!tty_out
->term_initted
)
1774 if (!tty_out
->output
)
1775 return; /* The tty is suspended. */
1777 /* Go to and clear the last line of the terminal. */
1779 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1781 /* Code adapted from tty_clear_end_of_line. */
1782 if (tty_out
->TS_clr_line
)
1784 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1787 { /* have to do it the hard way */
1789 tty_turn_off_insert (tty_out
);
1791 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1793 fputc (' ', tty_out
->output
);
1797 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1798 fflush (tty_out
->output
);
1800 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1801 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1804 /* Avoid possible loss of output when changing terminal modes. */
1805 fsync (fileno (tty_out
->output
));
1809 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1810 if (interrupt_input
)
1812 reset_sigio (fileno (tty_out
->input
));
1813 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1814 old_fcntl_owner
[fileno (tty_out
->input
)]);
1816 #endif /* F_SETOWN */
1818 fcntl (fileno (tty_out
->input
), F_SETFL
,
1819 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1821 #endif /* F_SETFL */
1823 if (tty_out
->old_tty
)
1824 while (EMACS_SET_TTY (fileno (tty_out
->input
),
1825 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1828 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1833 widen_foreground_group (fileno (tty_out
->input
));
1839 /* Set up the proper status flags for use of a pty. */
1845 /* I'm told that TOICREMOTE does not mean control chars
1846 "can't be sent" but rather that they don't have
1847 input-editing or signaling effects.
1848 That should be good, because we have other ways
1849 to do those things in Emacs.
1850 However, telnet mode seems not to work on 4.2.
1851 So TIOCREMOTE is turned off now. */
1853 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1854 will hang. In particular, the "timeout" feature (which
1855 causes a read to return if there is no data available)
1856 does this. Also it is known that telnet mode will hang
1857 in such a way that Emacs must be stopped (perhaps this
1858 is the same problem).
1860 If TIOCREMOTE is turned off, then there is a bug in
1861 hp-ux which sometimes loses data. Apparently the
1862 code which blocks the master process when the internal
1863 buffer fills up does not work. Other than this,
1864 though, everything else seems to work fine.
1866 Since the latter lossage is more benign, we may as well
1867 lose that way. -- cph */
1869 #if defined(SYSV_PTYS) || defined(UNIX98_PTYS)
1872 ioctl (fd
, FIONBIO
, &on
);
1877 #endif /* HAVE_PTYS */
1881 /* Assigning an input channel is done at the start of Emacs execution.
1882 This is called each time Emacs is resumed, also, but does nothing
1883 because input_chain is no longer zero. */
1890 if (fileno (CURTTY ()->input
)) == 0)
1892 status
= SYS$
ASSIGN (&input_dsc
, &fileno (CURTTY ()->input
)), 0, 0);
1898 /* Deassigning the input channel is done before exiting. */
1903 return SYS$
DASSGN (fileno (CURTTY ()->input
)));
1908 /* Request reading one character into the keyboard buffer.
1909 This is done as soon as the buffer becomes empty. */
1915 extern kbd_input_ast ();
1917 waiting_for_ast
= 0;
1919 status
= SYS$
QIO (0, fileno (CURTTY()->input
), IO$_READVBLK
,
1920 &input_iosb
, kbd_input_ast
, 1,
1921 &input_buffer
, 1, 0, terminator_mask
, 0, 0);
1926 /* Ast routine that is called when keyboard input comes in
1927 in accord with the SYS$QIO above. */
1932 register int c
= -1;
1933 int old_errno
= errno
;
1934 extern EMACS_TIME
*input_available_clear_time
;
1936 if (waiting_for_ast
)
1937 SYS$
SETEF (input_ef
);
1938 waiting_for_ast
= 0;
1941 if (input_count
== 25)
1943 printf ("Ast # %d,", input_count
);
1944 printf (" iosb = %x, %x, %x, %x",
1945 input_iosb
.offset
, input_iosb
.status
, input_iosb
.termlen
,
1948 if (input_iosb
.offset
)
1952 printf (", char = 0%o", c
);
1964 struct input_event e
;
1967 e
.kind
= ASCII_KEYSTROKE_EVENT
;
1968 XSETINT (e
.code
, c
);
1969 e
.frame_or_window
= selected_frame
;
1970 kbd_buffer_store_event (&e
);
1972 if (input_available_clear_time
)
1973 EMACS_SET_SECS_USECS (*input_available_clear_time
, 0, 0);
1977 /* Wait until there is something in kbd_buffer. */
1980 wait_for_kbd_input ()
1982 extern int have_process_input
, process_exited
;
1984 /* If already something, avoid doing system calls. */
1985 if (detect_input_pending ())
1989 /* Clear a flag, and tell ast routine above to set it. */
1990 SYS$
CLREF (input_ef
);
1991 waiting_for_ast
= 1;
1992 /* Check for timing error: ast happened while we were doing that. */
1993 if (!detect_input_pending ())
1995 /* No timing error: wait for flag to be set. */
1996 set_waiting_for_input (0);
1997 SYS$
WFLOR (input_ef
, input_eflist
);
1998 clear_waiting_for_input ();
1999 if (!detect_input_pending ())
2000 /* Check for subprocess input availability */
2002 int dsp
= have_process_input
|| process_exited
;
2004 SYS$
CLREF (process_ef
);
2005 if (have_process_input
)
2006 process_command_input ();
2011 update_mode_lines
++;
2012 prepare_menu_bars ();
2013 redisplay_preserve_echo_area (18);
2017 waiting_for_ast
= 0;
2020 /* Get rid of any pending QIO, when we are about to suspend
2021 or when we want to throw away pending input.
2022 We wait for a positive sign that the AST routine has run
2023 and therefore there is no I/O request queued when we return.
2024 SYS$SETAST is used to avoid a timing error. */
2030 printf ("At end_kbd_input.\n");
2034 if (LIB$
AST_IN_PROG ()) /* Don't wait if suspending from kbd_buffer_store_event! */
2036 SYS$
CANCEL (fileno (CURTTY()->input
));
2041 /* Clear a flag, and tell ast routine above to set it. */
2042 SYS$
CLREF (input_ef
);
2043 waiting_for_ast
= 1;
2045 SYS$
CANCEL (fileno (CURTTY()->input
));
2047 SYS$
WAITFR (input_ef
);
2048 waiting_for_ast
= 0;
2051 /* Wait for either input available or time interval expiry. */
2054 input_wait_timeout (timeval
)
2055 int timeval
; /* Time to wait, in seconds */
2058 static int zero
= 0;
2059 static int large
= -10000000;
2061 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2063 /* If already something, avoid doing system calls. */
2064 if (detect_input_pending ())
2068 /* Clear a flag, and tell ast routine above to set it. */
2069 SYS$
CLREF (input_ef
);
2070 waiting_for_ast
= 1;
2071 /* Check for timing error: ast happened while we were doing that. */
2072 if (!detect_input_pending ())
2074 /* No timing error: wait for flag to be set. */
2076 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2077 SYS$
WFLOR (timer_ef
, timer_eflist
); /* Wait for timer expiry or input */
2079 waiting_for_ast
= 0;
2082 /* The standard `sleep' routine works some other way
2083 and it stops working if you have ever quit out of it.
2084 This one continues to work. */
2090 static int zero
= 0;
2091 static int large
= -10000000;
2093 LIB$
EMUL (&timeval
, &large
, &zero
, time
); /* Convert to VMS format */
2096 if (SYS$
SETIMR (timer_ef
, time
, 0, 1) & 1) /* Set timer */
2097 SYS$
WAITFR (timer_ef
); /* Wait for timer expiry only */
2118 croak ("request sigio");
2126 croak ("unrequest sigio");
2131 /* Note that VMS compiler won't accept defined (CANNOT_DUMP). */
2136 #ifndef SYSTEM_MALLOC
2143 /* Some systems that cannot dump also cannot implement these. */
2146 * Return the address of the start of the text segment prior to
2147 * doing an unexec. After unexec the return value is undefined.
2148 * See crt0.c for further explanation and _start.
2152 #if !(defined (__NetBSD__) && defined (__ELF__))
2153 #ifndef HAVE_TEXT_START
2158 return ((char *) TEXT_START
);
2160 extern int _start ();
2161 return ((char *) _start
);
2162 #endif /* TEXT_START */
2164 #endif /* not HAVE_TEXT_START */
2168 * Return the address of the start of the data segment prior to
2169 * doing an unexec. After unexec the return value is undefined.
2170 * See crt0.c for further information and definition of data_start.
2172 * Apparently, on BSD systems this is etext at startup. On
2173 * USG systems (swapping) this is highly mmu dependent and
2174 * is also dependent on whether or not the program is running
2175 * with shared text. Generally there is a (possibly large)
2176 * gap between end of text and start of data with shared text.
2178 * On Uniplus+ systems with shared text, data starts at a
2179 * fixed address. Each port (from a given oem) is generally
2180 * different, and the specific value of the start of data can
2181 * be obtained via the UniPlus+ specific "uvar" system call,
2182 * however the method outlined in crt0.c seems to be more portable.
2184 * Probably what will have to happen when a USG unexec is available,
2185 * at least on UniPlus, is temacs will have to be made unshared so
2186 * that text and data are contiguous. Then once loadup is complete,
2187 * unexec will produce a shared executable where the data can be
2188 * at the normal shared text boundary and the startofdata variable
2189 * will be patched by unexec to the correct value.
2193 #ifndef start_of_data
2198 return ((char *) DATA_START
);
2200 #ifdef ORDINARY_LINK
2202 * This is a hack. Since we're not linking crt0.c or pre_crt0.c,
2203 * data_start isn't defined. We take the address of environ, which
2204 * is known to live at or near the start of the system crt0.c, and
2205 * we don't sweat the handful of bytes that might lose.
2207 extern char **environ
;
2209 return ((char *) &environ
);
2211 extern int data_start
;
2212 return ((char *) &data_start
);
2213 #endif /* ORDINARY_LINK */
2214 #endif /* DATA_START */
2216 #endif /* start_of_data */
2217 #endif /* NEED_STARTS (not CANNOT_DUMP or not SYSTEM_MALLOC) */
2219 /* init_system_name sets up the string for the Lisp function
2220 system-name to return. */
2222 extern Lisp_Object Vsystem_name
;
2226 #include <sys/socket.h>
2228 #endif /* HAVE_SOCKETS */
2229 #endif /* not VMS */
2232 #ifndef HAVE_H_ERRNO
2235 #endif /* TRY_AGAIN */
2242 if ((sp
= egetenv ("SYS$NODE")) == 0)
2243 Vsystem_name
= build_string ("vax-vms");
2244 else if ((end
= index (sp
, ':')) == 0)
2245 Vsystem_name
= build_string (sp
);
2247 Vsystem_name
= make_string (sp
, end
- sp
);
2249 #ifndef HAVE_GETHOSTNAME
2252 Vsystem_name
= build_string (uts
.nodename
);
2253 #else /* HAVE_GETHOSTNAME */
2254 unsigned int hostname_size
= 256;
2255 char *hostname
= (char *) alloca (hostname_size
);
2257 /* Try to get the host name; if the buffer is too short, try
2258 again. Apparently, the only indication gethostname gives of
2259 whether the buffer was large enough is the presence or absence
2260 of a '\0' in the string. Eech. */
2263 gethostname (hostname
, hostname_size
- 1);
2264 hostname
[hostname_size
- 1] = '\0';
2266 /* Was the buffer large enough for the '\0'? */
2267 if (strlen (hostname
) < hostname_size
- 1)
2270 hostname_size
<<= 1;
2271 hostname
= (char *) alloca (hostname_size
);
2274 /* Turn the hostname into the official, fully-qualified hostname.
2275 Don't do this if we're going to dump; this can confuse system
2276 libraries on some machines and make the dumped emacs core dump. */
2279 #endif /* not CANNOT_DUMP */
2280 if (! index (hostname
, '.'))
2283 #ifdef HAVE_GETADDRINFO
2284 struct addrinfo
*res
;
2285 struct addrinfo hints
;
2288 memset (&hints
, 0, sizeof(hints
));
2289 hints
.ai_socktype
= SOCK_STREAM
;
2290 hints
.ai_flags
= AI_CANONNAME
;
2292 for (count
= 0;; count
++)
2294 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
2295 || ret
!= EAI_AGAIN
)
2300 Fsleep_for (make_number (1), Qnil
);
2305 struct addrinfo
*it
= res
;
2308 char *fqdn
= it
->ai_canonname
;
2309 if (fqdn
&& index (fqdn
, '.')
2310 && strcmp (fqdn
, "localhost.localdomain") != 0)
2316 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
2317 strcpy (hostname
, it
->ai_canonname
);
2321 #else /* !HAVE_GETADDRINFO */
2323 for (count
= 0;; count
++)
2329 hp
= gethostbyname (hostname
);
2331 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
2338 Fsleep_for (make_number (1), Qnil
);
2343 char *fqdn
= (char *) hp
->h_name
;
2348 if (!index (fqdn
, '.'))
2350 /* We still don't have a fully qualified domain name.
2351 Try to find one in the list of alternate names */
2352 char **alias
= hp
->h_aliases
;
2354 && (!index (*alias
, '.')
2355 || !strcmp (*alias
, "localhost.localdomain")))
2362 /* Convert the host name to lower case. */
2363 /* Using ctype.h here would introduce a possible locale
2364 dependence that is probably wrong for hostnames. */
2368 if (*p
>= 'A' && *p
<= 'Z')
2374 #endif /* !HAVE_GETADDRINFO */
2376 #endif /* HAVE_SOCKETS */
2377 /* We used to try using getdomainname here,
2378 but NIIBE Yutaka <gniibe@etl.go.jp> says that
2379 getdomainname gets the NIS/YP domain which often is not the same
2380 as in Internet domain name. */
2381 #if 0 /* Turned off because sysinfo is not really likely to return the
2382 correct Internet domain. */
2383 #if (HAVE_SYSINFO && defined (SI_SRPC_DOMAIN))
2384 if (! index (hostname
, '.'))
2386 /* The hostname is not fully qualified. Append the domain name. */
2388 int hostlen
= strlen (hostname
);
2389 int domain_size
= 256;
2393 char *domain
= (char *) alloca (domain_size
+ 1);
2394 char *fqdn
= (char *) alloca (hostlen
+ 1 + domain_size
+ 1);
2395 int sys_domain_size
= sysinfo (SI_SRPC_DOMAIN
, domain
, domain_size
);
2396 if (sys_domain_size
<= 0)
2398 if (domain_size
< sys_domain_size
)
2400 domain_size
= sys_domain_size
;
2403 strcpy (fqdn
, hostname
);
2404 if (domain
[0] == '.')
2405 strcpy (fqdn
+ hostlen
, domain
);
2406 else if (domain
[0] != 0)
2408 fqdn
[hostlen
] = '.';
2409 strcpy (fqdn
+ hostlen
+ 1, domain
);
2415 #endif /* HAVE_SYSINFO && defined (SI_SRPC_DOMAIN) */
2417 Vsystem_name
= build_string (hostname
);
2418 #endif /* HAVE_GETHOSTNAME */
2422 for (p
= SDATA (Vsystem_name
); *p
; p
++)
2423 if (*p
== ' ' || *p
== '\t')
2430 #if !defined (HAVE_SELECT)
2432 #include "sysselect.h"
2435 #if defined (HAVE_X_WINDOWS) && !defined (HAVE_SELECT)
2436 /* Cause explanatory error message at compile time,
2437 since the select emulation is not good enough for X. */
2438 int *x
= &x_windows_lose_if_no_select_system_call
;
2441 /* Emulate as much as select as is possible under 4.1 and needed by Gnu Emacs
2442 * Only checks read descriptors.
2444 /* How long to wait between checking fds in select */
2445 #define SELECT_PAUSE 1
2448 /* For longjmp'ing back to read_input_waiting. */
2450 jmp_buf read_alarm_throw
;
2452 /* Nonzero if the alarm signal should throw back to read_input_waiting.
2453 The read_socket_hook function sets this to 1 while it is waiting. */
2455 int read_alarm_should_throw
;
2461 signal (SIGALRM
, SIG_IGN
);
2462 SIGNAL_THREAD_CHECK (SIGALRM
);
2463 if (read_alarm_should_throw
)
2464 longjmp (read_alarm_throw
, 1);
2468 /* Only rfds are checked. */
2470 sys_select (nfds
, rfds
, wfds
, efds
, timeout
)
2472 SELECT_TYPE
*rfds
, *wfds
, *efds
;
2473 EMACS_TIME
*timeout
;
2475 /* XXX This needs to be updated for multi-tty support. Is there
2476 anybody who needs to emulate select these days? */
2481 extern int proc_buffered_char
[];
2482 #ifndef subprocesses
2483 int process_tick
= 0, update_tick
= 0;
2485 extern int process_tick
, update_tick
;
2489 #if defined (HAVE_SELECT) && defined (HAVE_X_WINDOWS)
2490 /* If we're using X, then the native select will work; we only need the
2491 emulation for non-X usage. */
2492 if (!NILP (Vinitial_window_system
))
2493 return select (nfds
, rfds
, wfds
, efds
, timeout
);
2495 timeoutval
= timeout
? EMACS_SECS (*timeout
) : 100000;
2496 local_timeout
= &timeoutval
;
2508 /* If we are looking only for the terminal, with no timeout,
2509 just read it and wait -- that's more efficient. */
2510 if (*local_timeout
== 100000 && process_tick
== update_tick
2511 && FD_ISSET (0, &orfds
))
2514 for (fd
= 1; fd
< nfds
; ++fd
)
2515 if (FD_ISSET (fd
, &orfds
))
2517 if (! detect_input_pending ())
2518 read_input_waiting ();
2524 /* Once a second, till the timer expires, check all the flagged read
2525 * descriptors to see if any input is available. If there is some then
2526 * set the corresponding bit in the return copy of rfds.
2530 register int to_check
, fd
;
2534 for (to_check
= nfds
, fd
= 0; --to_check
>= 0; fd
++)
2536 if (FD_ISSET (fd
, &orfds
))
2538 int avail
= 0, status
= 0;
2541 avail
= detect_input_pending (); /* Special keyboard handler */
2545 status
= ioctl (fd
, FIONREAD
, &avail
);
2546 #else /* no FIONREAD */
2547 /* Hoping it will return -1 if nothing available
2548 or 0 if all 0 chars requested are read. */
2549 if (proc_buffered_char
[fd
] >= 0)
2553 avail
= read (fd
, &buf
, 1);
2555 proc_buffered_char
[fd
] = buf
;
2557 #endif /* no FIONREAD */
2559 if (status
>= 0 && avail
> 0)
2567 if (*local_timeout
== 0 || ravail
!= 0 || process_tick
!= update_tick
)
2570 turn_on_atimers (0);
2571 signal (SIGALRM
, select_alarm
);
2573 alarm (SELECT_PAUSE
);
2575 /* Wait for a SIGALRM (or maybe a SIGTINT) */
2576 while (select_alarmed
== 0 && *local_timeout
!= 0
2577 && process_tick
== update_tick
)
2579 /* If we are interested in terminal input,
2580 wait by reading the terminal.
2581 That makes instant wakeup for terminal input at least. */
2582 if (FD_ISSET (0, &orfds
))
2584 read_input_waiting ();
2585 if (detect_input_pending ())
2591 (*local_timeout
) -= SELECT_PAUSE
;
2593 /* Reset the old alarm if there was one. */
2594 turn_on_atimers (1);
2596 if (*local_timeout
== 0) /* Stop on timer being cleared */
2601 #endif /* not WINDOWSNT */
2603 /* Read keyboard input into the standard buffer,
2604 waiting for at least one character. */
2607 read_input_waiting ()
2609 /* XXX This needs to be updated for multi-tty support. Is there
2610 anybody who needs to emulate select these days? */
2612 extern int quit_char
;
2614 if (read_socket_hook
)
2616 struct input_event hold_quit
;
2618 EVENT_INIT (hold_quit
);
2619 hold_quit
.kind
= NO_EVENT
;
2621 read_alarm_should_throw
= 0;
2622 if (! setjmp (read_alarm_throw
))
2623 nread
= (*read_socket_hook
) (0, 1, &hold_quit
);
2627 if (hold_quit
.kind
!= NO_EVENT
)
2628 kbd_buffer_store_event (&hold_quit
);
2632 struct input_event e
;
2634 nread
= read (fileno (stdin
), buf
, 1);
2637 /* Scan the chars for C-g and store them in kbd_buffer. */
2638 e
.kind
= ASCII_KEYSTROKE_EVENT
;
2639 e
.frame_or_window
= selected_frame
;
2641 for (i
= 0; i
< nread
; i
++)
2643 /* Convert chars > 0177 to meta events if desired.
2644 We do this under the same conditions that read_avail_input does. */
2645 if (read_socket_hook
== 0)
2647 /* If the user says she has a meta key, then believe her. */
2648 if (meta_key
== 1 && (buf
[i
] & 0x80))
2649 e
.modifiers
= meta_modifier
;
2654 XSETINT (e
.code
, buf
[i
]);
2655 kbd_buffer_store_event (&e
);
2656 /* Don't look at input that follows a C-g too closely.
2657 This reduces lossage due to autorepeat on C-g. */
2658 if (buf
[i
] == quit_char
)
2664 #if !defined (HAVE_SELECT)
2665 #define select sys_select
2668 #endif /* not HAVE_SELECT */
2669 #endif /* not VMS */
2670 #endif /* not MSDOS */
2672 /* POSIX signals support - DJB */
2673 /* Anyone with POSIX signals should have ANSI C declarations */
2675 #ifdef POSIX_SIGNALS
2677 sigset_t empty_mask
, full_mask
;
2680 sys_signal (int signal_number
, signal_handler_t action
)
2682 struct sigaction new_action
, old_action
;
2683 sigemptyset (&new_action
.sa_mask
);
2684 new_action
.sa_handler
= action
;
2685 #if defined (SA_RESTART) && ! defined (BROKEN_SA_RESTART) && !defined(SYNC_INPUT)
2686 /* Emacs mostly works better with restartable system services. If this
2687 flag exists, we probably want to turn it on here.
2688 However, on some systems this resets the timeout of `select'
2689 which means that `select' never finishes if it keeps getting signals.
2690 BROKEN_SA_RESTART is defined on those systems. */
2691 /* It's not clear why the comment above says "mostly works better". --Stef
2692 When SYNC_INPUT is set, we don't want SA_RESTART because we need to poll
2693 for pending input so we need long-running syscalls to be interrupted
2694 after a signal that sets the interrupt_input_pending flag. */
2695 new_action
.sa_flags
= SA_RESTART
;
2697 new_action
.sa_flags
= 0;
2699 sigaction (signal_number
, &new_action
, &old_action
);
2700 return (old_action
.sa_handler
);
2704 /* If we're compiling with GCC, we don't need this function, since it
2705 can be written as a macro. */
2707 sys_sigmask (int sig
)
2710 sigemptyset (&mask
);
2711 sigaddset (&mask
, sig
);
2716 /* I'd like to have these guys return pointers to the mask storage in here,
2717 but there'd be trouble if the code was saving multiple masks. I'll be
2718 safe and pass the structure. It normally won't be more than 2 bytes
2722 sys_sigblock (sigset_t new_mask
)
2725 sigprocmask (SIG_BLOCK
, &new_mask
, &old_mask
);
2730 sys_sigunblock (sigset_t new_mask
)
2733 sigprocmask (SIG_UNBLOCK
, &new_mask
, &old_mask
);
2738 sys_sigsetmask (sigset_t new_mask
)
2741 sigprocmask (SIG_SETMASK
, &new_mask
, &old_mask
);
2745 #endif /* POSIX_SIGNALS */
2747 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2748 static char *my_sys_siglist
[NSIG
];
2752 # define sys_siglist my_sys_siglist
2758 #ifdef POSIX_SIGNALS
2759 sigemptyset (&empty_mask
);
2760 sigfillset (&full_mask
);
2763 #if !defined HAVE_STRSIGNAL && !HAVE_DECL_SYS_SIGLIST
2767 sys_siglist
[SIGABRT
] = "Aborted";
2770 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
2773 sys_siglist
[SIGALRM
] = "Alarm clock";
2776 sys_siglist
[SIGBUS
] = "Bus error";
2779 sys_siglist
[SIGCLD
] = "Child status changed";
2782 sys_siglist
[SIGCHLD
] = "Child status changed";
2785 sys_siglist
[SIGCONT
] = "Continued";
2788 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
2791 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
2794 sys_siglist
[SIGEMT
] = "Emulation trap";
2797 sys_siglist
[SIGFPE
] = "Arithmetic exception";
2800 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
2803 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
2806 sys_siglist
[SIGHUP
] = "Hangup";
2809 sys_siglist
[SIGILL
] = "Illegal instruction";
2812 sys_siglist
[SIGINT
] = "Interrupt";
2815 sys_siglist
[SIGIO
] = "I/O possible";
2818 sys_siglist
[SIGIOINT
] = "I/O intervention required";
2821 sys_siglist
[SIGIOT
] = "IOT trap";
2824 sys_siglist
[SIGKILL
] = "Killed";
2827 sys_siglist
[SIGLOST
] = "Resource lost";
2830 sys_siglist
[SIGLWP
] = "SIGLWP";
2833 sys_siglist
[SIGMSG
] = "Monitor mode data available";
2836 sys_siglist
[SIGWIND
] = "SIGPHONE";
2839 sys_siglist
[SIGPIPE
] = "Broken pipe";
2842 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
2845 sys_siglist
[SIGPROF
] = "Profiling timer expired";
2848 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
2851 sys_siglist
[SIGPWR
] = "Power-fail restart";
2854 sys_siglist
[SIGQUIT
] = "Quit";
2857 sys_siglist
[SIGRETRACT
] = "Need to relinguish monitor mode";
2860 sys_siglist
[SIGSAK
] = "Secure attention";
2863 sys_siglist
[SIGSEGV
] = "Segmentation violation";
2866 sys_siglist
[SIGSOUND
] = "Sound completed";
2869 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
2872 sys_siglist
[SIGSTP
] = "Stopped (user)";
2875 sys_siglist
[SIGSYS
] = "Bad argument to system call";
2878 sys_siglist
[SIGTERM
] = "Terminated";
2881 sys_siglist
[SIGTHAW
] = "SIGTHAW";
2884 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
2887 sys_siglist
[SIGTSTP
] = "Stopped (user)";
2890 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
2893 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
2896 sys_siglist
[SIGURG
] = "Urgent I/O condition";
2899 sys_siglist
[SIGUSR1
] = "User defined signal 1";
2902 sys_siglist
[SIGUSR2
] = "User defined signal 2";
2905 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
2908 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
2911 sys_siglist
[SIGWINCH
] = "Window size changed";
2914 sys_siglist
[SIGWIND
] = "SIGWIND";
2917 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
2920 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
2923 #endif /* !defined HAVE_STRSIGNAL && !defined HAVE_DECL_SYS_SIGLIST */
2932 /* Figure out how many bits the system's random number generator uses.
2933 `random' and `lrand48' are assumed to return 31 usable bits.
2934 BSD `rand' returns a 31 bit value but the low order bits are unusable;
2935 so we'll shift it and treat it like the 15-bit USG `rand'. */
2939 # define RAND_BITS 31
2940 # else /* !HAVE_RANDOM */
2941 # ifdef HAVE_LRAND48
2942 # define RAND_BITS 31
2943 # define random lrand48
2944 # else /* !HAVE_LRAND48 */
2945 # define RAND_BITS 15
2946 # if RAND_MAX == 32767
2947 # define random rand
2948 # else /* RAND_MAX != 32767 */
2949 # if RAND_MAX == 2147483647
2950 # define random() (rand () >> 16)
2951 # else /* RAND_MAX != 2147483647 */
2953 # define random rand
2955 # define random() (rand () >> 16)
2957 # endif /* RAND_MAX != 2147483647 */
2958 # endif /* RAND_MAX != 32767 */
2959 # endif /* !HAVE_LRAND48 */
2960 # endif /* !HAVE_RANDOM */
2961 #endif /* !RAND_BITS */
2968 srandom ((unsigned int)arg
);
2970 # ifdef HAVE_LRAND48
2973 srand ((unsigned int)arg
);
2979 * Build a full Emacs-sized word out of whatever we've got.
2980 * This suffices even for a 64-bit architecture with a 15-bit rand.
2985 long val
= random ();
2986 #if VALBITS > RAND_BITS
2987 val
= (val
<< RAND_BITS
) ^ random ();
2988 #if VALBITS > 2*RAND_BITS
2989 val
= (val
<< RAND_BITS
) ^ random ();
2990 #if VALBITS > 3*RAND_BITS
2991 val
= (val
<< RAND_BITS
) ^ random ();
2992 #if VALBITS > 4*RAND_BITS
2993 val
= (val
<< RAND_BITS
) ^ random ();
2994 #endif /* need at least 5 */
2995 #endif /* need at least 4 */
2996 #endif /* need at least 3 */
2997 #endif /* need at least 2 */
2998 return val
& ((1L << VALBITS
) - 1);
3004 /* If any place else asks for the TERM variable,
3005 allow it to be overridden with the EMACS_TERM variable
3006 before attempting to translate the logical name TERM. As a last
3007 resort, ask for VAX C's special idea of the TERM variable. */
3014 static char buf
[256];
3015 static struct dsc$descriptor_s equiv
3016 = {sizeof (buf
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, buf
};
3017 static struct dsc$descriptor_s d_name
3018 = {0, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, 0};
3021 if (!strcmp (name
, "TERM"))
3023 val
= (char *) getenv ("EMACS_TERM");
3028 d_name
.dsc$w_length
= strlen (name
);
3029 d_name
.dsc$a_pointer
= name
;
3030 if (LIB$
SYS_TRNLOG (&d_name
, &eqlen
, &equiv
) == 1)
3032 char *str
= (char *) xmalloc (eqlen
+ 1);
3033 bcopy (buf
, str
, eqlen
);
3035 /* This is a storage leak, but a pain to fix. With luck,
3036 no one will ever notice. */
3039 return (char *) getenv (name
);
3044 /* Since VMS doesn't believe in core dumps, the only way to debug this beast is
3045 to force a call on the debugger from within the image. */
3049 reset_all_sys_modes ();
3050 LIB$
SIGNAL (SS$_DEBUG
);
3056 #ifdef LINK_CRTL_SHARE
3057 #ifdef SHARABLE_LIB_BUG
3058 /* Variables declared noshare and initialized in sharable libraries
3059 cannot be shared. The VMS linker incorrectly forces you to use a private
3060 version which is uninitialized... If not for this "feature", we
3061 could use the C library definition of sys_nerr and sys_errlist. */
3063 char *sys_errlist
[] =
3067 "no such file or directory",
3069 "interrupted system call",
3071 "no such device or address",
3072 "argument list too long",
3073 "exec format error",
3076 "no more processes",
3077 "not enough memory",
3078 "permission denied",
3080 "block device required",
3081 "mount devices busy",
3083 "cross-device link",
3088 "file table overflow",
3089 "too many open files",
3093 "no space left on device",
3095 "read-only file system",
3101 "vax/vms specific error code nontranslatable error"
3103 #endif /* SHARABLE_LIB_BUG */
3104 #endif /* LINK_CRTL_SHARE */
3107 #ifndef HAVE_STRERROR
3113 extern char *sys_errlist
[];
3114 extern int sys_nerr
;
3116 if (errnum
>= 0 && errnum
< sys_nerr
)
3117 return sys_errlist
[errnum
];
3118 return (char *) "Unknown error";
3120 #endif /* not WINDOWSNT */
3121 #endif /* ! HAVE_STRERROR */
3124 emacs_open (path
, oflag
, mode
)
3128 register int rtnval
;
3130 while ((rtnval
= open (path
, oflag
, mode
)) == -1
3131 && (errno
== EINTR
))
3141 register int rtnval
;
3143 #if defined (MAC_OSX) && defined (HAVE_CARBON)
3145 extern int mac_try_close_socket
P_ ((int));
3147 if (mac_try_close_socket (fd
))
3152 while ((rtnval
= close (fd
)) == -1
3153 && (errno
== EINTR
))
3156 /* If close is interrupted SunOS 4.1 may or may not have closed the
3157 file descriptor. If it did the second close will fail with
3158 errno = EBADF. That means we have succeeded. */
3159 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
3166 emacs_read (fildes
, buf
, nbyte
)
3171 register int rtnval
;
3173 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
3174 && (errno
== EINTR
))
3180 emacs_write (fildes
, buf
, nbyte
)
3185 register int rtnval
, bytes_written
;
3191 rtnval
= write (fildes
, buf
, nbyte
);
3198 /* I originally used `QUIT' but that might causes files to
3199 be truncated if you hit C-g in the middle of it. --Stef */
3200 if (interrupt_input_pending
)
3201 handle_async_input ();
3202 if (pending_atimers
)
3203 do_pending_atimers ();
3208 return (bytes_written
? bytes_written
: -1);
3213 bytes_written
+= rtnval
;
3215 return (bytes_written
);
3220 * All of the following are for USG.
3222 * On USG systems the system calls are INTERRUPTIBLE by signals
3223 * that the user program has elected to catch. Thus the system call
3224 * must be retried in these cases. To handle this without massive
3225 * changes in the source code, we remap the standard system call names
3226 * to names for our own functions in sysdep.c that do the system call
3227 * with retries. Actually, for portability reasons, it is good
3228 * programming practice, as this example shows, to limit all actual
3229 * system calls to a single occurrence in the source. Sure, this
3230 * adds an extra level of function call overhead but it is almost
3231 * always negligible. Fred Fish, Unisoft Systems Inc.
3235 * Warning, this function may not duplicate 4.2 action properly
3236 * under error conditions.
3240 /* In 4.1, param.h fails to define this. */
3241 #define MAXPATHLEN 1024
3250 char *npath
, *spath
;
3251 extern char *getcwd ();
3253 BLOCK_INPUT
; /* getcwd uses malloc */
3254 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
3260 /* On Altos 3068, getcwd can return @hostname/dir, so discard
3261 up to first slash. Should be harmless on other systems. */
3262 while (*npath
&& *npath
!= '/')
3264 strcpy (pathname
, npath
);
3265 free (spath
); /* getcwd uses malloc */
3270 #endif /* HAVE_GETWD */
3273 * Emulate rename using unlink/link. Note that this is
3274 * only partially correct. Also, doesn't enforce restriction
3275 * that files be of same type (regular->regular, dir->dir, etc).
3284 if (access (from
, 0) == 0)
3287 if (link (from
, to
) == 0)
3288 if (unlink (from
) == 0)
3300 /* HPUX curses library references perror, but as far as we know
3301 it won't be called. Anyway this definition will do for now. */
3307 #endif /* not HAVE_PERROR */
3313 * Emulate BSD dup2. First close newd if it already exists.
3314 * Then, attempt to dup oldd. If not successful, call dup2 recursively
3315 * until we are, then close the unsuccessful ones.
3322 register int fd
, ret
;
3327 return fcntl (oldd
, F_DUPFD
, newd
);
3334 ret
= dup2 (old
,new);
3340 #endif /* not HAVE_DUP2 */
3343 * Gettimeofday. Simulate as much as possible. Only accurate
3344 * to nearest second. Emacs doesn't use tzp so ignore it for now.
3345 * Only needed when subprocesses are defined.
3350 #ifndef HAVE_GETTIMEOFDAY
3355 gettimeofday (tp
, tzp
)
3357 struct timezone
*tzp
;
3359 extern long time ();
3361 tp
->tv_sec
= time ((long *)0);
3364 tzp
->tz_minuteswest
= -1;
3371 #endif /* subprocess && !HAVE_GETTIMEOFDAY && HAVE_TIMEVAL && !VMS */
3374 * This function will go away as soon as all the stubs fixed. (fnf)
3381 printf ("%s not yet implemented\r\n", badfunc
);
3382 reset_all_sys_modes ();
3388 /* Directory routines for systems that don't have them. */
3390 #ifdef SYSV_SYSTEM_DIR
3394 #if defined (BROKEN_CLOSEDIR) || !defined (HAVE_CLOSEDIR)
3398 register DIR *dirp
; /* stream from opendir */
3402 rtnval
= emacs_close (dirp
->dd_fd
);
3404 /* Some systems (like Solaris) allocate the buffer and the DIR all
3405 in one block. Why in the world are we freeing this ourselves
3407 #if ! (defined (sun) && defined (USG5_4))
3408 xfree ((char *) dirp
->dd_buf
); /* directory block defined in <dirent.h> */
3410 xfree ((char *) dirp
);
3414 #endif /* BROKEN_CLOSEDIR or not HAVE_CLOSEDIR */
3415 #endif /* SYSV_SYSTEM_DIR */
3417 #ifdef NONSYSTEM_DIR_LIBRARY
3421 char *filename
; /* name of directory */
3423 register DIR *dirp
; /* -> malloc'ed storage */
3424 register int fd
; /* file descriptor for read */
3425 struct stat sbuf
; /* result of fstat */
3427 fd
= emacs_open (filename
, O_RDONLY
, 0);
3432 if (fstat (fd
, &sbuf
) < 0
3433 || (sbuf
.st_mode
& S_IFMT
) != S_IFDIR
3434 || (dirp
= (DIR *) xmalloc (sizeof (DIR))) == 0)
3438 return 0; /* bad luck today */
3443 dirp
->dd_loc
= dirp
->dd_size
= 0; /* refill needed */
3450 register DIR *dirp
; /* stream from opendir */
3452 emacs_close (dirp
->dd_fd
);
3453 xfree ((char *) dirp
);
3461 ino_t od_ino
; /* inode */
3462 char od_name
[DIRSIZ
]; /* filename */
3464 #endif /* not VMS */
3466 struct direct dir_static
; /* simulated directory contents */
3471 register DIR *dirp
; /* stream from opendir */
3474 register struct olddir
*dp
; /* -> directory data */
3476 register struct dir$_name
*dp
; /* -> directory data */
3477 register struct dir$_version
*dv
; /* -> version data */
3482 if (dirp
->dd_loc
>= dirp
->dd_size
)
3483 dirp
->dd_loc
= dirp
->dd_size
= 0;
3485 if (dirp
->dd_size
== 0 /* refill buffer */
3486 && (dirp
->dd_size
= emacs_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3490 dp
= (struct olddir
*) &dirp
->dd_buf
[dirp
->dd_loc
];
3491 dirp
->dd_loc
+= sizeof (struct olddir
);
3493 if (dp
->od_ino
!= 0) /* not deleted entry */
3495 dir_static
.d_ino
= dp
->od_ino
;
3496 strncpy (dir_static
.d_name
, dp
->od_name
, DIRSIZ
);
3497 dir_static
.d_name
[DIRSIZ
] = '\0';
3498 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3499 dir_static
.d_reclen
= sizeof (struct direct
)
3501 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3502 return &dir_static
; /* -> simulated structure */
3505 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3506 if (dirp
->dd_loc
== 0)
3507 dirp
->dd_loc
= (dp
->dir$b_namecount
&1) ? dp
->dir$b_namecount
+ 1
3508 : dp
->dir$b_namecount
;
3509 dv
= (struct dir$_version
*)&dp
->dir$t_name
[dirp
->dd_loc
];
3510 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3511 dir_static
.d_namlen
= dp
->dir$b_namecount
;
3512 dir_static
.d_reclen
= sizeof (struct direct
)
3514 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3515 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3516 dir_static
.d_name
[dir_static
.d_namlen
] = '\0';
3517 dirp
->dd_loc
= dirp
->dd_size
; /* only one record at a time */
3524 /* readdirver is just like readdir except it returns all versions of a file
3525 as separate entries. */
3530 register DIR *dirp
; /* stream from opendir */
3532 register struct dir$_name
*dp
; /* -> directory data */
3533 register struct dir$_version
*dv
; /* -> version data */
3535 if (dirp
->dd_loc
>= dirp
->dd_size
- sizeof (struct dir$_name
))
3536 dirp
->dd_loc
= dirp
->dd_size
= 0;
3538 if (dirp
->dd_size
== 0 /* refill buffer */
3539 && (dirp
->dd_size
= sys_read (dirp
->dd_fd
, dirp
->dd_buf
, DIRBLKSIZ
)) <= 0)
3542 dp
= (struct dir$_name
*) dirp
->dd_buf
;
3543 if (dirp
->dd_loc
== 0)
3544 dirp
->dd_loc
= (dp
->dir$b_namecount
& 1) ? dp
->dir$b_namecount
+ 1
3545 : dp
->dir$b_namecount
;
3546 dv
= (struct dir$_version
*) &dp
->dir$t_name
[dirp
->dd_loc
];
3547 strncpy (dir_static
.d_name
, dp
->dir$t_name
, dp
->dir$b_namecount
);
3548 sprintf (&dir_static
.d_name
[dp
->dir$b_namecount
], ";%d", dv
->dir$w_version
);
3549 dir_static
.d_namlen
= strlen (dir_static
.d_name
);
3550 dir_static
.d_ino
= dv
->dir$w_fid_num
;
3551 dir_static
.d_reclen
= sizeof (struct direct
) - MAXNAMLEN
+ 3
3552 + dir_static
.d_namlen
- dir_static
.d_namlen
% 4;
3553 dirp
->dd_loc
= ((char *) (++dv
) - dp
->dir$t_name
);
3559 #endif /* NONSYSTEM_DIR_LIBRARY */
3563 set_file_times (filename
, atime
, mtime
)
3564 const char *filename
;
3565 EMACS_TIME atime
, mtime
;
3568 struct timeval tv
[2];
3571 return utimes (filename
, tv
);
3572 #else /* not HAVE_UTIMES */
3574 utb
.actime
= EMACS_SECS (atime
);
3575 utb
.modtime
= EMACS_SECS (mtime
);
3576 return utime (filename
, &utb
);
3577 #endif /* not HAVE_UTIMES */
3580 /* mkdir and rmdir functions, for systems which don't have them. */
3584 * Written by Robert Rother, Mariah Corporation, August 1985.
3586 * If you want it, it's yours. All I ask in return is that if you
3587 * figure out how to do this in a Bourne Shell script you send me
3589 * sdcsvax!rmr or rmr@uscd
3591 * Severely hacked over by John Gilmore to make a 4.2BSD compatible
3592 * subroutine. 11Mar86; hoptoad!gnu
3594 * Modified by rmtodd@uokmax 6-28-87 -- when making an already existing dir,
3595 * subroutine didn't return EEXIST. It does now.
3601 #ifdef MKDIR_PROTOTYPE
3605 mkdir (dpath
, dmode
)
3610 int cpid
, status
, fd
;
3611 struct stat statbuf
;
3613 if (stat (dpath
, &statbuf
) == 0)
3615 errno
= EEXIST
; /* Stat worked, so it already exists */
3619 /* If stat fails for a reason other than non-existence, return error */
3620 if (errno
!= ENOENT
)
3623 synch_process_alive
= 1;
3624 switch (cpid
= fork ())
3627 case -1: /* Error in fork */
3628 return (-1); /* Errno is set already */
3630 case 0: /* Child process */
3632 * Cheap hack to set mode of new directory. Since this
3633 * child process is going away anyway, we zap its umask.
3634 * FIXME, this won't suffice to set SUID, SGID, etc. on this
3635 * directory. Does anybody care?
3637 status
= umask (0); /* Get current umask */
3638 status
= umask (status
| (0777 & ~dmode
)); /* Set for mkdir */
3639 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3646 execl ("/bin/mkdir", "mkdir", dpath
, (char *) 0);
3647 _exit (-1); /* Can't exec /bin/mkdir */
3649 default: /* Parent process */
3650 wait_for_termination (cpid
);
3653 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3654 || synch_process_termsig
!= 0)
3656 errno
= EIO
; /* We don't know why, but */
3657 return -1; /* /bin/mkdir failed */
3662 #endif /* not HAVE_MKDIR */
3669 int cpid
, status
, fd
;
3670 struct stat statbuf
;
3672 if (stat (dpath
, &statbuf
) != 0)
3674 /* Stat just set errno. We don't have to */
3678 synch_process_alive
= 1;
3679 switch (cpid
= fork ())
3682 case -1: /* Error in fork */
3683 return (-1); /* Errno is set already */
3685 case 0: /* Child process */
3686 fd
= emacs_open ("/dev/null", O_RDWR
, 0);
3693 execl ("/bin/rmdir", "rmdir", dpath
, (char *) 0);
3694 _exit (-1); /* Can't exec /bin/rmdir */
3696 default: /* Parent process */
3697 wait_for_termination (cpid
);
3700 if (synch_process_death
!= 0 || synch_process_retcode
!= 0
3701 || synch_process_termsig
!= 0)
3703 errno
= EIO
; /* We don't know why, but */
3704 return -1; /* /bin/rmdir failed */
3709 #endif /* !HAVE_RMDIR */
3713 /* Functions for VMS */
3719 /* Return as a string the VMS error string pertaining to STATUS.
3720 Reuses the same static buffer each time it is called. */
3724 int status
; /* VMS status code */
3728 static char buf
[257];
3730 bufadr
[0] = sizeof buf
- 1;
3731 bufadr
[1] = (int) buf
;
3732 if (! (SYS$
GETMSG (status
, &len
, bufadr
, 0x1, 0) & 1))
3733 return "untranslatable VMS error status";
3741 /* The following is necessary because 'access' emulation by VMS C (2.0) does
3742 * not work correctly. (It also doesn't work well in version 2.3.)
3747 #define DESCRIPTOR(name,string) struct dsc$descriptor_s name = \
3748 { strlen (string), DSC$K_DTYPE_T, DSC$K_CLASS_S, string }
3752 unsigned short s_buflen
;
3753 unsigned short s_code
;
3755 unsigned short *s_retlenadr
;
3759 #define buflen s.s_buflen
3760 #define code s.s_code
3761 #define bufadr s.s_bufadr
3762 #define retlenadr s.s_retlenadr
3764 #define R_OK 4 /* test for read permission */
3765 #define W_OK 2 /* test for write permission */
3766 #define X_OK 1 /* test for execute (search) permission */
3767 #define F_OK 0 /* test for presence of file */
3770 sys_access (path
, mode
)
3774 static char *user
= NULL
;
3777 /* translate possible directory spec into .DIR file name, so brain-dead
3778 * access can treat the directory like a file. */
3779 if (directory_file_name (path
, dir_fn
))
3783 return access (path
, mode
);
3784 if (user
== NULL
&& (user
= (char *) getenv ("USER")) == NULL
)
3790 unsigned short int dummy
;
3792 static int constant
= ACL$C_FILE
;
3793 DESCRIPTOR (path_desc
, path
);
3794 DESCRIPTOR (user_desc
, user
);
3798 if ((mode
& X_OK
) && ((stat
= access (path
, mode
)) < 0 || mode
== X_OK
))
3801 acces
|= CHP$M_READ
;
3803 acces
|= CHP$M_WRITE
;
3804 itemlst
[0].buflen
= sizeof (int);
3805 itemlst
[0].code
= CHP$_FLAGS
;
3806 itemlst
[0].bufadr
= (char *) &flags
;
3807 itemlst
[0].retlenadr
= &dummy
;
3808 itemlst
[1].buflen
= sizeof (int);
3809 itemlst
[1].code
= CHP$_ACCESS
;
3810 itemlst
[1].bufadr
= (char *) &acces
;
3811 itemlst
[1].retlenadr
= &dummy
;
3812 itemlst
[2].end
= CHP$_END
;
3813 stat
= SYS$
CHECK_ACCESS (&constant
, &path_desc
, &user_desc
, itemlst
);
3814 return stat
== SS$_NORMAL
? 0 : -1;
3818 #else /* not VMS4_4 */
3821 #define ACE$M_WRITE 2
3822 #define ACE$C_KEYID 1
3824 static unsigned short memid
, grpid
;
3825 static unsigned int uic
;
3827 /* Called from init_sys_modes, so it happens not very often
3828 but at least each time Emacs is loaded. */
3830 sys_access_reinit ()
3836 sys_access (filename
, type
)
3842 int status
, size
, i
, typecode
, acl_controlled
;
3843 unsigned int *aclptr
, *aclend
, aclbuf
[60];
3844 union prvdef prvmask
;
3846 /* Get UIC and GRP values for protection checking. */
3849 status
= LIB$
GETJPI (&JPI$_UIC
, 0, 0, &uic
, 0, 0);
3852 memid
= uic
& 0xFFFF;
3856 if (type
!= 2) /* not checking write access */
3857 return access (filename
, type
);
3859 /* Check write protection. */
3861 #define CHECKPRIV(bit) (prvmask.bit)
3862 #define WRITABLE(field) (! ((xab.xab$w_pro >> field) & XAB$M_NOWRITE))
3864 /* Find privilege bits */
3865 status
= SYS$
SETPRV (0, 0, 0, prvmask
);
3867 error ("Unable to find privileges: %s", vmserrstr (status
));
3868 if (CHECKPRIV (PRV$V_BYPASS
))
3869 return 0; /* BYPASS enabled */
3871 fab
.fab$b_fac
= FAB$M_GET
;
3872 fab
.fab$l_fna
= filename
;
3873 fab
.fab$b_fns
= strlen (filename
);
3874 fab
.fab$l_xab
= &xab
;
3875 xab
= cc$rms_xabpro
;
3876 xab
.xab$l_aclbuf
= aclbuf
;
3877 xab
.xab$w_aclsiz
= sizeof (aclbuf
);
3878 status
= SYS$
OPEN (&fab
, 0, 0);
3881 SYS$
CLOSE (&fab
, 0, 0);
3882 /* Check system access */
3883 if (CHECKPRIV (PRV$V_SYSPRV
) && WRITABLE (XAB$V_SYS
))
3885 /* Check ACL entries, if any */
3887 if (xab
.xab$w_acllen
> 0)
3890 aclend
= &aclbuf
[xab
.xab$w_acllen
/ 4];
3891 while (*aclptr
&& aclptr
< aclend
)
3893 size
= (*aclptr
& 0xff) / 4;
3894 typecode
= (*aclptr
>> 8) & 0xff;
3895 if (typecode
== ACE$C_KEYID
)
3896 for (i
= size
- 1; i
> 1; i
--)
3897 if (aclptr
[i
] == uic
)
3900 if (aclptr
[1] & ACE$M_WRITE
)
3901 return 0; /* Write access through ACL */
3903 aclptr
= &aclptr
[size
];
3905 if (acl_controlled
) /* ACL specified, prohibits write access */
3908 /* No ACL entries specified, check normal protection */
3909 if (WRITABLE (XAB$V_WLD
)) /* World writable */
3911 if (WRITABLE (XAB$V_GRP
) &&
3912 (unsigned short) (xab
.xab$l_uic
>> 16) == grpid
)
3913 return 0; /* Group writable */
3914 if (WRITABLE (XAB$V_OWN
) &&
3915 (xab
.xab$l_uic
& 0xFFFF) == memid
)
3916 return 0; /* Owner writable */
3918 return -1; /* Not writable */
3920 #endif /* not VMS4_4 */
3923 static char vtbuf
[NAM$C_MAXRSS
+1];
3925 /* translate a vms file spec to a unix path */
3927 sys_translate_vms (vfile
)
3938 /* leading device or logical name is a root directory */
3939 if (p
= strchr (vfile
, ':'))
3948 if (*p
== '[' || *p
== '<')
3950 while (*++vfile
!= *p
+ 2)
3954 if (vfile
[-1] == *p
)
3977 static char utbuf
[NAM$C_MAXRSS
+1];
3979 /* translate a unix path to a VMS file spec */
3981 sys_translate_unix (ufile
)
4004 if (index (&ufile
[1], '/'))
4011 if (index (&ufile
[1], '/'))
4018 if (strncmp (ufile
, "./", 2) == 0)
4025 ufile
++; /* skip the dot */
4026 if (index (&ufile
[1], '/'))
4031 else if (strncmp (ufile
, "../", 3) == 0)
4039 ufile
+= 2; /* skip the dots */
4040 if (index (&ufile
[1], '/'))
4065 extern char *getcwd ();
4067 #define MAXPATHLEN 1024
4069 ptr
= xmalloc (MAXPATHLEN
);
4070 val
= getcwd (ptr
, MAXPATHLEN
);
4076 strcpy (pathname
, ptr
);
4085 long item_code
= JPI$_OWNER
;
4086 unsigned long parent_id
;
4089 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &parent_id
)) & 1) == 0)
4092 vaxc$errno
= status
;
4102 return (getgid () << 16) | getuid ();
4107 sys_read (fildes
, buf
, nbyte
)
4112 return read (fildes
, buf
, (nbyte
< MAXIOSIZE
? nbyte
: MAXIOSIZE
));
4117 sys_write (fildes
, buf
, nbyte
)
4122 register int nwrote
, rtnval
= 0;
4124 while (nbyte
> MAXIOSIZE
&& (nwrote
= write (fildes
, buf
, MAXIOSIZE
)) > 0) {
4130 return rtnval
? rtnval
: -1;
4131 if ((nwrote
= write (fildes
, buf
, nbyte
)) < 0)
4132 return rtnval
? rtnval
: -1;
4133 return (rtnval
+ nwrote
);
4138 * VAX/VMS VAX C RTL really loses. It insists that records
4139 * end with a newline (carriage return) character, and if they
4140 * don't it adds one (nice of it isn't it!)
4142 * Thus we do this stupidity below.
4147 sys_write (fildes
, buf
, nbytes
)
4150 unsigned int nbytes
;
4157 fstat (fildes
, &st
);
4163 /* Handle fixed-length files with carriage control. */
4164 if (st
.st_fab_rfm
== FAB$C_FIX
4165 && ((st
.st_fab_rat
& (FAB$M_FTN
| FAB$M_CR
)) != 0))
4167 len
= st
.st_fab_mrs
;
4168 retval
= write (fildes
, p
, min (len
, nbytes
));
4171 retval
++; /* This skips the implied carriage control */
4175 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4176 while (*e
!= '\n' && e
> p
) e
--;
4177 if (p
== e
) /* Ok.. so here we add a newline... sigh. */
4178 e
= p
+ min (MAXIOSIZE
, nbytes
) - 1;
4180 retval
= write (fildes
, p
, len
);
4191 /* Create file NEW copying its attributes from file OLD. If
4192 OLD is 0 or does not exist, create based on the value of
4195 /* Protection value the file should ultimately have.
4196 Set by create_copy_attrs, and use by rename_sansversions. */
4197 static unsigned short int fab_final_pro
;
4200 creat_copy_attrs (old
, new)
4203 struct FAB fab
= cc$rms_fab
;
4204 struct XABPRO xabpro
;
4205 char aclbuf
[256]; /* Choice of size is arbitrary. See below. */
4206 extern int vms_stmlf_recfm
;
4210 fab
.fab$b_fac
= FAB$M_GET
;
4211 fab
.fab$l_fna
= old
;
4212 fab
.fab$b_fns
= strlen (old
);
4213 fab
.fab$l_xab
= (char *) &xabpro
;
4214 xabpro
= cc$rms_xabpro
;
4215 xabpro
.xab$l_aclbuf
= aclbuf
;
4216 xabpro
.xab$w_aclsiz
= sizeof aclbuf
;
4217 /* Call $OPEN to fill in the fab & xabpro fields. */
4218 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4220 SYS$
CLOSE (&fab
, 0, 0);
4221 fab
.fab$l_alq
= 0; /* zero the allocation quantity */
4222 if (xabpro
.xab$w_acllen
> 0)
4224 if (xabpro
.xab$w_acllen
> sizeof aclbuf
)
4225 /* If the acl buffer was too short, redo open with longer one.
4226 Wouldn't need to do this if there were some system imposed
4227 limit on the size of an ACL, but I can't find any such. */
4229 xabpro
.xab$l_aclbuf
= (char *) alloca (xabpro
.xab$w_acllen
);
4230 xabpro
.xab$w_aclsiz
= xabpro
.xab$w_acllen
;
4231 if (SYS$
OPEN (&fab
, 0, 0) & 1)
4232 SYS$
CLOSE (&fab
, 0, 0);
4238 xabpro
.xab$l_aclbuf
= 0;
4243 fab
.fab$l_fna
= new;
4244 fab
.fab$b_fns
= strlen (new);
4248 fab
.fab$b_rfm
= vms_stmlf_recfm
? FAB$C_STMLF
: FAB$C_VAR
;
4249 fab
.fab$b_rat
= FAB$M_CR
;
4252 /* Set the file protections such that we will be able to manipulate
4253 this file. Once we are done writing and renaming it, we will set
4254 the protections back. */
4256 fab_final_pro
= xabpro
.xab$w_pro
;
4258 SYS$
SETDFPROT (0, &fab_final_pro
);
4259 xabpro
.xab$w_pro
&= 0xff0f; /* set O:rewd for now. This is set back later. */
4261 /* Create the new file with either default attrs or attrs copied
4263 if (!(SYS$
CREATE (&fab
, 0, 0) & 1))
4265 SYS$
CLOSE (&fab
, 0, 0);
4266 /* As this is a "replacement" for creat, return a file descriptor
4267 opened for writing. */
4268 return open (new, O_WRONLY
);
4273 #include <varargs.h>
4276 #define va_count(X) ((X) = *(((int *) &(va_alist)) - 1))
4281 sys_creat (va_alist
)
4284 va_list list_incrementer
;
4287 int rfd
; /* related file descriptor */
4288 int fd
; /* Our new file descriptor */
4295 extern int vms_stmlf_recfm
;
4298 va_start (list_incrementer
);
4299 name
= va_arg (list_incrementer
, char *);
4300 mode
= va_arg (list_incrementer
, int);
4302 rfd
= va_arg (list_incrementer
, int);
4303 va_end (list_incrementer
);
4306 /* Use information from the related file descriptor to set record
4307 format of the newly created file. */
4308 fstat (rfd
, &st_buf
);
4309 switch (st_buf
.st_fab_rfm
)
4312 strcpy (rfm
, "rfm = fix");
4313 sprintf (mrs
, "mrs = %d", st_buf
.st_fab_mrs
);
4314 strcpy (rat
, "rat = ");
4315 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4317 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4318 strcat (rat
, "ftn");
4319 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4320 strcat (rat
, "prn");
4321 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4322 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4323 strcat (rat
, ", blk");
4325 strcat (rat
, "blk");
4326 return creat (name
, 0, rfm
, rat
, mrs
);
4329 strcpy (rfm
, "rfm = vfc");
4330 sprintf (fsz
, "fsz = %d", st_buf
.st_fab_fsz
);
4331 strcpy (rat
, "rat = ");
4332 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4334 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4335 strcat (rat
, "ftn");
4336 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4337 strcat (rat
, "prn");
4338 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4339 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4340 strcat (rat
, ", blk");
4342 strcat (rat
, "blk");
4343 return creat (name
, 0, rfm
, rat
, fsz
);
4346 strcpy (rfm
, "rfm = stm");
4350 strcpy (rfm
, "rfm = stmcr");
4354 strcpy (rfm
, "rfm = stmlf");
4358 strcpy (rfm
, "rfm = udf");
4362 strcpy (rfm
, "rfm = var");
4365 strcpy (rat
, "rat = ");
4366 if (st_buf
.st_fab_rat
& FAB$M_CR
)
4368 else if (st_buf
.st_fab_rat
& FAB$M_FTN
)
4369 strcat (rat
, "ftn");
4370 else if (st_buf
.st_fab_rat
& FAB$M_PRN
)
4371 strcat (rat
, "prn");
4372 if (st_buf
.st_fab_rat
& FAB$M_BLK
)
4373 if (st_buf
.st_fab_rat
& (FAB$M_CR
|FAB$M_FTN
|FAB$M_PRN
))
4374 strcat (rat
, ", blk");
4376 strcat (rat
, "blk");
4380 strcpy (rfm
, vms_stmlf_recfm
? "rfm = stmlf" : "rfm=var");
4381 strcpy (rat
, "rat=cr");
4383 /* Until the VAX C RTL fixes the many bugs with modes, always use
4384 mode 0 to get the user's default protection. */
4385 fd
= creat (name
, 0, rfm
, rat
);
4386 if (fd
< 0 && errno
== EEXIST
)
4388 if (unlink (name
) < 0)
4389 report_file_error ("delete", build_string (name
));
4390 fd
= creat (name
, 0, rfm
, rat
);
4396 /* fwrite to stdout is S L O W. Speed it up by using fputc...*/
4398 sys_fwrite (ptr
, size
, num
, fp
)
4399 register char * ptr
;
4402 register int tot
= num
* size
;
4410 * The VMS C library routine creat actually creates a new version of an
4411 * existing file rather than truncating the old version. There are times
4412 * when this is not the desired behavior, for instance, when writing an
4413 * auto save file (you only want one version), or when you don't have
4414 * write permission in the directory containing the file (but the file
4415 * itself is writable). Hence this routine, which is equivalent to
4416 * "close (creat (fn, 0));" on Unix if fn already exists.
4422 struct FAB xfab
= cc$rms_fab
;
4423 struct RAB xrab
= cc$rms_rab
;
4426 xfab
.fab$l_fop
= FAB$M_TEF
; /* free allocated but unused blocks on close */
4427 xfab
.fab$b_fac
= FAB$M_TRN
| FAB$M_GET
; /* allow truncate and get access */
4428 xfab
.fab$b_shr
= FAB$M_NIL
; /* allow no sharing - file must be locked */
4429 xfab
.fab$l_fna
= fn
;
4430 xfab
.fab$b_fns
= strlen (fn
);
4431 xfab
.fab$l_dna
= ";0"; /* default to latest version of the file */
4433 xrab
.rab$l_fab
= &xfab
;
4435 /* This gibberish opens the file, positions to the first record, and
4436 deletes all records from there until the end of file. */
4437 if ((SYS$
OPEN (&xfab
) & 01) == 01)
4439 if ((SYS$
CONNECT (&xrab
) & 01) == 01 &&
4440 (SYS$
FIND (&xrab
) & 01) == 01 &&
4441 (SYS$
TRUNCATE (&xrab
) & 01) == 01)
4452 /* Define this symbol to actually read SYSUAF.DAT. This requires either
4453 SYSPRV or a readable SYSUAF.DAT. */
4459 * Routine to read the VMS User Authorization File and return
4460 * a specific user's record.
4463 static struct UAF retuaf
;
4466 get_uaf_name (uname
)
4473 uaf_fab
= cc$rms_fab
;
4474 uaf_rab
= cc$rms_rab
;
4475 /* initialize fab fields */
4476 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4477 uaf_fab
.fab$b_fns
= 21;
4478 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4479 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4480 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4481 /* initialize rab fields */
4482 uaf_rab
.rab$l_fab
= &uaf_fab
;
4483 /* open the User Authorization File */
4484 status
= SYS$
OPEN (&uaf_fab
);
4488 vaxc$errno
= status
;
4491 status
= SYS$
CONNECT (&uaf_rab
);
4495 vaxc$errno
= status
;
4498 /* read the requested record - index is in uname */
4499 uaf_rab
.rab$l_kbf
= uname
;
4500 uaf_rab
.rab$b_ksz
= strlen (uname
);
4501 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4502 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4503 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4504 status
= SYS$
GET (&uaf_rab
);
4508 vaxc$errno
= status
;
4511 /* close the User Authorization File */
4512 status
= SYS$
DISCONNECT (&uaf_rab
);
4516 vaxc$errno
= status
;
4519 status
= SYS$
CLOSE (&uaf_fab
);
4523 vaxc$errno
= status
;
4537 uaf_fab
= cc$rms_fab
;
4538 uaf_rab
= cc$rms_rab
;
4539 /* initialize fab fields */
4540 uaf_fab
.fab$l_fna
= "SYS$SYSTEM:SYSUAF.DAT";
4541 uaf_fab
.fab$b_fns
= 21;
4542 uaf_fab
.fab$b_fac
= FAB$M_GET
;
4543 uaf_fab
.fab$b_org
= FAB$C_IDX
;
4544 uaf_fab
.fab$b_shr
= FAB$M_GET
|FAB$M_PUT
|FAB$M_UPD
|FAB$M_DEL
;
4545 /* initialize rab fields */
4546 uaf_rab
.rab$l_fab
= &uaf_fab
;
4547 /* open the User Authorization File */
4548 status
= SYS$
OPEN (&uaf_fab
);
4552 vaxc$errno
= status
;
4555 status
= SYS$
CONNECT (&uaf_rab
);
4559 vaxc$errno
= status
;
4562 /* read the requested record - index is in uic */
4563 uaf_rab
.rab$b_krf
= 1; /* 1st alternate key */
4564 uaf_rab
.rab$l_kbf
= (char *) &uic
;
4565 uaf_rab
.rab$b_ksz
= sizeof uic
;
4566 uaf_rab
.rab$b_rac
= RAB$C_KEY
;
4567 uaf_rab
.rab$l_ubf
= (char *)&retuaf
;
4568 uaf_rab
.rab$w_usz
= sizeof retuaf
;
4569 status
= SYS$
GET (&uaf_rab
);
4573 vaxc$errno
= status
;
4576 /* close the User Authorization File */
4577 status
= SYS$
DISCONNECT (&uaf_rab
);
4581 vaxc$errno
= status
;
4584 status
= SYS$
CLOSE (&uaf_fab
);
4588 vaxc$errno
= status
;
4594 static struct passwd retpw
;
4602 /* copy these out first because if the username is 32 chars, the next
4603 section will overwrite the first byte of the UIC */
4604 retpw
.pw_uid
= up
->uaf$w_mem
;
4605 retpw
.pw_gid
= up
->uaf$w_grp
;
4607 /* I suppose this is not the best style, to possibly overwrite one
4608 byte beyond the end of the field, but what the heck... */
4609 ptr
= &up
->uaf$t_username
[UAF$S_USERNAME
];
4610 while (ptr
[-1] == ' ')
4613 strcpy (retpw
.pw_name
, up
->uaf$t_username
);
4615 /* the rest of these are counted ascii strings */
4616 strncpy (retpw
.pw_gecos
, &up
->uaf$t_owner
[1], up
->uaf$t_owner
[0]);
4617 retpw
.pw_gecos
[up
->uaf$t_owner
[0]] = '\0';
4618 strncpy (retpw
.pw_dir
, &up
->uaf$t_defdev
[1], up
->uaf$t_defdev
[0]);
4619 retpw
.pw_dir
[up
->uaf$t_defdev
[0]] = '\0';
4620 strncat (retpw
.pw_dir
, &up
->uaf$t_defdir
[1], up
->uaf$t_defdir
[0]);
4621 retpw
.pw_dir
[up
->uaf$t_defdev
[0] + up
->uaf$t_defdir
[0]] = '\0';
4622 strncpy (retpw
.pw_shell
, &up
->uaf$t_defcli
[1], up
->uaf$t_defcli
[0]);
4623 retpw
.pw_shell
[up
->uaf$t_defcli
[0]] = '\0';
4627 #else /* not READ_SYSUAF */
4628 static struct passwd retpw
;
4629 #endif /* not READ_SYSUAF */
4640 unsigned char * full
;
4641 #endif /* READ_SYSUAF */
4646 if ('a' <= *ptr
&& *ptr
<= 'z')
4651 if (!(up
= get_uaf_name (name
)))
4653 return cnv_uaf_pw (up
);
4655 if (strcmp (name
, getenv ("USER")) == 0)
4657 retpw
.pw_uid
= getuid ();
4658 retpw
.pw_gid
= getgid ();
4659 strcpy (retpw
.pw_name
, name
);
4660 if (full
= egetenv ("FULLNAME"))
4661 strcpy (retpw
.pw_gecos
, full
);
4663 *retpw
.pw_gecos
= '\0';
4664 strcpy (retpw
.pw_dir
, egetenv ("HOME"));
4665 *retpw
.pw_shell
= '\0';
4670 #endif /* not READ_SYSUAF */
4680 if (!(up
= get_uaf_uic (uid
)))
4682 return cnv_uaf_pw (up
);
4684 if (uid
== sys_getuid ())
4685 return getpwnam (egetenv ("USER"));
4688 #endif /* not READ_SYSUAF */
4691 /* return total address space available to the current process. This is
4692 the sum of the current p0 size, p1 size and free page table entries
4698 unsigned long free_pages
;
4699 unsigned long frep0va
;
4700 unsigned long frep1va
;
4703 item_code
= JPI$_FREPTECNT
;
4704 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &free_pages
)) & 1) == 0)
4707 vaxc$errno
= status
;
4712 item_code
= JPI$_FREP0VA
;
4713 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep0va
)) & 1) == 0)
4716 vaxc$errno
= status
;
4719 item_code
= JPI$_FREP1VA
;
4720 if (((status
= LIB$
GETJPI (&item_code
, 0, 0, &frep1va
)) & 1) == 0)
4723 vaxc$errno
= status
;
4727 return free_pages
+ frep0va
+ (0x7fffffff - frep1va
);
4731 define_logical_name (varname
, string
)
4735 struct dsc$descriptor_s strdsc
=
4736 {strlen (string
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, string
};
4737 struct dsc$descriptor_s envdsc
=
4738 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4739 struct dsc$descriptor_s lnmdsc
=
4740 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4742 return LIB$
SET_LOGICAL (&envdsc
, &strdsc
, &lnmdsc
, 0, 0);
4746 delete_logical_name (varname
)
4749 struct dsc$descriptor_s envdsc
=
4750 {strlen (varname
), DSC$K_DTYPE_T
, DSC$K_CLASS_S
, varname
};
4751 struct dsc$descriptor_s lnmdsc
=
4752 {7, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, "LNM$JOB"};
4754 return LIB$
DELETE_LOGICAL (&envdsc
, &lnmdsc
);
4772 error ("execvp system call not implemented");
4781 struct FAB from_fab
= cc$rms_fab
, to_fab
= cc$rms_fab
;
4782 struct NAM from_nam
= cc$rms_nam
, to_nam
= cc$rms_nam
;
4783 char from_esn
[NAM$C_MAXRSS
];
4784 char to_esn
[NAM$C_MAXRSS
];
4786 from_fab
.fab$l_fna
= from
;
4787 from_fab
.fab$b_fns
= strlen (from
);
4788 from_fab
.fab$l_nam
= &from_nam
;
4789 from_fab
.fab$l_fop
= FAB$M_NAM
;
4791 from_nam
.nam$l_esa
= from_esn
;
4792 from_nam
.nam$b_ess
= sizeof from_esn
;
4794 to_fab
.fab$l_fna
= to
;
4795 to_fab
.fab$b_fns
= strlen (to
);
4796 to_fab
.fab$l_nam
= &to_nam
;
4797 to_fab
.fab$l_fop
= FAB$M_NAM
;
4799 to_nam
.nam$l_esa
= to_esn
;
4800 to_nam
.nam$b_ess
= sizeof to_esn
;
4802 status
= SYS$
RENAME (&from_fab
, 0, 0, &to_fab
);
4808 if (status
== RMS$_DEV
)
4812 vaxc$errno
= status
;
4817 /* This function renames a file like `rename', but it strips
4818 the version number from the "to" filename, such that the "to" file is
4819 will always be a new version. It also sets the file protection once it is
4820 finished. The protection that we will use is stored in fab_final_pro,
4821 and was set when we did a creat_copy_attrs to create the file that we
4824 We could use the chmod function, but Eunichs uses 3 bits per user category
4825 to describe the protection, and VMS uses 4 (write and delete are separate
4826 bits). To maintain portability, the VMS implementation of `chmod' wires
4827 the W and D bits together. */
4830 static struct fibdef fib
; /* We need this initialized to zero */
4831 char vms_file_written
[NAM$C_MAXRSS
];
4834 rename_sans_version (from
,to
)
4841 struct FAB to_fab
= cc$rms_fab
;
4842 struct NAM to_nam
= cc$rms_nam
;
4843 struct dsc$descriptor fib_d
={sizeof (fib
),0,0,(char*) &fib
};
4844 struct dsc$descriptor fib_attr
[2]
4845 = {{sizeof (fab_final_pro
),ATR$C_FPRO
,0,(char*) &fab_final_pro
},{0,0,0,0}};
4846 char to_esn
[NAM$C_MAXRSS
];
4848 $
DESCRIPTOR (disk
,to_esn
);
4850 to_fab
.fab$l_fna
= to
;
4851 to_fab
.fab$b_fns
= strlen (to
);
4852 to_fab
.fab$l_nam
= &to_nam
;
4853 to_fab
.fab$l_fop
= FAB$M_NAM
;
4855 to_nam
.nam$l_esa
= to_esn
;
4856 to_nam
.nam$b_ess
= sizeof to_esn
;
4858 status
= SYS$
PARSE (&to_fab
, 0, 0); /* figure out the full file name */
4860 if (to_nam
.nam$l_fnb
&& NAM$M_EXP_VER
)
4861 *(to_nam
.nam$l_ver
) = '\0';
4863 stat
= rename (from
, to_esn
);
4867 strcpy (vms_file_written
, to_esn
);
4869 to_fab
.fab$l_fna
= vms_file_written
; /* this points to the versionless name */
4870 to_fab
.fab$b_fns
= strlen (vms_file_written
);
4872 /* Now set the file protection to the correct value */
4873 SYS$
OPEN (&to_fab
, 0, 0); /* This fills in the nam$w_fid fields */
4875 /* Copy these fields into the fib */
4876 fib
.fib$r_fid_overlay
.fib$w_fid
[0] = to_nam
.nam$w_fid
[0];
4877 fib
.fib$r_fid_overlay
.fib$w_fid
[1] = to_nam
.nam$w_fid
[1];
4878 fib
.fib$r_fid_overlay
.fib$w_fid
[2] = to_nam
.nam$w_fid
[2];
4880 SYS$
CLOSE (&to_fab
, 0, 0);
4882 stat
= SYS$
ASSIGN (&disk
, &chan
, 0, 0); /* open a channel to the disk */
4885 stat
= SYS$
QIOW (0, chan
, IO$_MODIFY
, iosb
, 0, 0, &fib_d
,
4886 0, 0, 0, &fib_attr
, 0);
4889 stat
= SYS$
DASSGN (chan
);
4892 strcpy (vms_file_written
, to_esn
); /* We will write this to the terminal*/
4903 unsigned short fid
[3];
4904 char esa
[NAM$C_MAXRSS
];
4907 fab
.fab$l_fop
= FAB$M_OFP
;
4908 fab
.fab$l_fna
= file
;
4909 fab
.fab$b_fns
= strlen (file
);
4910 fab
.fab$l_nam
= &nam
;
4913 nam
.nam$l_esa
= esa
;
4914 nam
.nam$b_ess
= NAM$C_MAXRSS
;
4916 status
= SYS$
PARSE (&fab
);
4917 if ((status
& 1) == 0)
4920 vaxc$errno
= status
;
4923 status
= SYS$
SEARCH (&fab
);
4924 if ((status
& 1) == 0)
4927 vaxc$errno
= status
;
4931 fid
[0] = nam
.nam$w_fid
[0];
4932 fid
[1] = nam
.nam$w_fid
[1];
4933 fid
[2] = nam
.nam$w_fid
[2];
4935 fab
.fab$l_fna
= new;
4936 fab
.fab$b_fns
= strlen (new);
4938 status
= SYS$
PARSE (&fab
);
4939 if ((status
& 1) == 0)
4942 vaxc$errno
= status
;
4946 nam
.nam$w_fid
[0] = fid
[0];
4947 nam
.nam$w_fid
[1] = fid
[1];
4948 nam
.nam$w_fid
[2] = fid
[2];
4950 nam
.nam$l_esa
= nam
.nam$l_name
;
4951 nam
.nam$b_esl
= nam
.nam$b_name
+ nam
.nam$b_type
+ nam
.nam$b_ver
;
4953 status
= SYS$
ENTER (&fab
);
4954 if ((status
& 1) == 0)
4957 vaxc$errno
= status
;
4968 printf ("%s not yet implemented\r\n", badfunc
);
4969 reset_all_sys_modes ();
4976 /* Arrange to return a range centered on zero. */
4977 return rand () - (1 << 30);
4994 register int length
;
4998 long max_str
= 65535;
5000 while (length
> max_str
) {
5001 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5006 (void) LIB$
MOVC5 (&zero
, &zero
, &zero
, &max_str
, b
);
5008 while (length
-- > 0)
5010 #endif /* not VMS */
5013 #endif /* no bzero */
5014 #endif /* BSTRING */
5016 #if (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY)
5019 /* Saying `void' requires a declaration, above, where bcopy is used
5020 and that declaration causes pain for systems where bcopy is a macro. */
5021 bcopy (b1
, b2
, length
)
5024 register int length
;
5027 long max_str
= 65535;
5029 while (length
> max_str
) {
5030 (void) LIB$
MOVC3 (&max_str
, b1
, b2
);
5036 (void) LIB$
MOVC3 (&length
, b1
, b2
);
5038 while (length
-- > 0)
5040 #endif /* not VMS */
5042 #endif /* (!defined (BSTRING) && !defined (bcopy)) || defined (NEED_BCOPY) */
5047 bcmp (b1
, b2
, length
) /* This could be a macro! */
5050 register int length
;
5053 struct dsc$descriptor_s src1
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b1
};
5054 struct dsc$descriptor_s src2
= {length
, DSC$K_DTYPE_T
, DSC$K_CLASS_S
, b2
};
5056 return STR$
COMPARE (&src1
, &src2
);
5058 while (length
-- > 0)
5063 #endif /* not VMS */
5065 #endif /* no bcmp */
5066 #endif /* not BSTRING */
5068 #ifndef HAVE_STRSIGNAL
5075 if (0 <= code
&& code
< NSIG
)
5078 signame
= sys_errlist
[code
];
5080 /* Cast to suppress warning if the table has const char *. */
5081 signame
= (char *) sys_siglist
[code
];
5087 #endif /* HAVE_STRSIGNAL */
5090 /* For make-serial-process */
5091 int serial_open (char *port
)
5095 fd
= emacs_open ((char*) port
,
5108 error ("Could not open %s: %s",
5109 port
, emacs_strerror (errno
));
5112 ioctl (fd
, TIOCEXCL
, (char *) 0);
5117 #endif /* TERMIOS */
5121 #if !defined (HAVE_CFMAKERAW)
5122 /* Workaround for targets which are missing cfmakeraw. */
5123 /* Pasted from man page. */
5124 static void cfmakeraw (struct termios
*termios_p
)
5126 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
5127 termios_p
->c_oflag
&= ~OPOST
;
5128 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
5129 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
5130 termios_p
->c_cflag
|= CS8
;
5132 #endif /* !defined (HAVE_CFMAKERAW */
5134 #if !defined (HAVE_CFSETSPEED)
5135 /* Workaround for targets which are missing cfsetspeed. */
5136 static int cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
5138 return (cfsetispeed (termios_p
, vitesse
)
5139 + cfsetospeed (termios_p
, vitesse
));
5143 /* For serial-process-configure */
5145 serial_configure (struct Lisp_Process
*p
,
5146 Lisp_Object contact
)
5148 Lisp_Object childp2
= Qnil
;
5149 Lisp_Object tem
= Qnil
;
5150 struct termios attr
;
5152 char summary
[4] = "???"; /* This usually becomes "8N1". */
5154 childp2
= Fcopy_sequence (p
->childp
);
5156 /* Read port attributes and prepare default configuration. */
5157 err
= tcgetattr (p
->outfd
, &attr
);
5159 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
5161 #if defined (CLOCAL)
5162 attr
.c_cflag
|= CLOCAL
;
5165 attr
.c_cflag
| CREAD
;
5168 /* Configure speed. */
5169 if (!NILP (Fplist_member (contact
, QCspeed
)))
5170 tem
= Fplist_get (contact
, QCspeed
);
5172 tem
= Fplist_get (p
->childp
, QCspeed
);
5174 err
= cfsetspeed (&attr
, XINT (tem
));
5176 error ("cfsetspeed(%d) failed: %s", XINT (tem
), emacs_strerror (errno
));
5177 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
5179 /* Configure bytesize. */
5180 if (!NILP (Fplist_member (contact
, QCbytesize
)))
5181 tem
= Fplist_get (contact
, QCbytesize
);
5183 tem
= Fplist_get (p
->childp
, QCbytesize
);
5185 tem
= make_number (8);
5187 if (XINT (tem
) != 7 && XINT (tem
) != 8)
5188 error (":bytesize must be nil (8), 7, or 8");
5189 summary
[0] = XINT(tem
) + '0';
5190 #if defined (CSIZE) && defined (CS7) && defined (CS8)
5191 attr
.c_cflag
&= ~CSIZE
;
5192 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
5194 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
5195 if (XINT (tem
) != 8)
5196 error ("Bytesize cannot be changed");
5198 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
5200 /* Configure parity. */
5201 if (!NILP (Fplist_member (contact
, QCparity
)))
5202 tem
= Fplist_get (contact
, QCparity
);
5204 tem
= Fplist_get (p
->childp
, QCparity
);
5205 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
5206 error (":parity must be nil (no parity), `even', or `odd'");
5207 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
5208 attr
.c_cflag
&= ~(PARENB
| PARODD
);
5209 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
5214 else if (EQ (tem
, Qeven
))
5217 attr
.c_cflag
|= PARENB
;
5218 attr
.c_iflag
|= (IGNPAR
| INPCK
);
5220 else if (EQ (tem
, Qodd
))
5223 attr
.c_cflag
|= (PARENB
| PARODD
);
5224 attr
.c_iflag
|= (IGNPAR
| INPCK
);
5227 /* Don't error on no parity, which should be set by cfmakeraw. */
5229 error ("Parity cannot be configured");
5231 childp2
= Fplist_put (childp2
, QCparity
, tem
);
5233 /* Configure stopbits. */
5234 if (!NILP (Fplist_member (contact
, QCstopbits
)))
5235 tem
= Fplist_get (contact
, QCstopbits
);
5237 tem
= Fplist_get (p
->childp
, QCstopbits
);
5239 tem
= make_number (1);
5241 if (XINT (tem
) != 1 && XINT (tem
) != 2)
5242 error (":stopbits must be nil (1 stopbit), 1, or 2");
5243 summary
[2] = XINT (tem
) + '0';
5244 #if defined (CSTOPB)
5245 attr
.c_cflag
&= ~CSTOPB
;
5246 if (XINT (tem
) == 2)
5247 attr
.c_cflag
|= CSTOPB
;
5249 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
5250 if (XINT (tem
) != 1)
5251 error ("Stopbits cannot be configured");
5253 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
5255 /* Configure flowcontrol. */
5256 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
5257 tem
= Fplist_get (contact
, QCflowcontrol
);
5259 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
5260 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
5261 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
5262 #if defined (CRTSCTS)
5263 attr
.c_cflag
&= ~CRTSCTS
;
5265 #if defined (CNEW_RTSCTS)
5266 attr
.c_cflag
&= ~CNEW_RTSCTS
;
5268 #if defined (IXON) && defined (IXOFF)
5269 attr
.c_iflag
&= ~(IXON
| IXOFF
);
5273 /* Already configured. */
5275 else if (EQ (tem
, Qhw
))
5277 #if defined (CRTSCTS)
5278 attr
.c_cflag
|= CRTSCTS
;
5279 #elif defined (CNEW_RTSCTS)
5280 attr
.c_cflag
|= CNEW_RTSCTS
;
5282 error ("Hardware flowcontrol (RTS/CTS) not supported");
5285 else if (EQ (tem
, Qsw
))
5287 #if defined (IXON) && defined (IXOFF)
5288 attr
.c_iflag
|= (IXON
| IXOFF
);
5290 error ("Software flowcontrol (XON/XOFF) not supported");
5293 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
5295 /* Activate configuration. */
5296 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
5298 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
5300 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
5301 p
->childp
= childp2
;
5304 #endif /* TERMIOS */
5306 /* arch-tag: edb43589-4e09-4544-b325-978b5b121dcf
5307 (do not change this comment) */