508 lines
13 KiB
C
508 lines
13 KiB
C
/* system-dependent definitions for CVS.
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Copyright (C) 1989-1992 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details. */
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifdef STAT_MACROS_BROKEN
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#undef S_ISBLK
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#undef S_ISCHR
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#undef S_ISDIR
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#undef S_ISREG
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#undef S_ISFIFO
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#undef S_ISLNK
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#undef S_ISSOCK
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#undef S_ISMPB
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#undef S_ISMPC
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#undef S_ISNWK
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#endif
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/* Not all systems have S_IFMT, but we probably want to use it if we
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do. See ChangeLog for a more detailed discussion. */
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#if !defined(S_ISBLK) && defined(S_IFBLK)
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# if defined(S_IFMT)
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# define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
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# else
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# define S_ISBLK(m) ((m) & S_IFBLK)
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# endif
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#endif
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#if !defined(S_ISCHR) && defined(S_IFCHR)
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# if defined(S_IFMT)
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# define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
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# else
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# define S_ISCHR(m) ((m) & S_IFCHR)
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# endif
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#endif
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#if !defined(S_ISDIR) && defined(S_IFDIR)
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# if defined(S_IFMT)
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# define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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# else
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# define S_ISDIR(m) ((m) & S_IFDIR)
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# endif
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#endif
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#if !defined(S_ISREG) && defined(S_IFREG)
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# if defined(S_IFMT)
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# define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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# else
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# define S_ISREG(m) ((m) & S_IFREG)
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# endif
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#endif
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#if !defined(S_ISFIFO) && defined(S_IFIFO)
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# if defined(S_IFMT)
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# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
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# else
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# define S_ISFIFO(m) ((m) & S_IFIFO)
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# endif
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#endif
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#if !defined(S_ISLNK) && defined(S_IFLNK)
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# if defined(S_IFMT)
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# define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
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# else
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# define S_ISLNK(m) ((m) & S_IFLNK)
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# endif
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#endif
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#if !defined(S_ISSOCK) && defined(S_IFSOCK)
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# if defined(S_IFMT)
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# define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
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# else
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# define S_ISSOCK(m) ((m) & S_IFSOCK)
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# endif
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#endif
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#if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
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# if defined(S_IFMT)
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# define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
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# define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
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# else
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# define S_ISMPB(m) ((m) & S_IFMPB)
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# define S_ISMPC(m) ((m) & S_IFMPC)
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# endif
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#endif
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#if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
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# if defined(S_IFMT)
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# define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
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# else
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# define S_ISNWK(m) ((m) & S_IFNWK)
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# endif
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#endif
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#if !defined(HAVE_MKFIFO)
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#define mkfifo(path, mode) (mknod ((path), (mode) | S_IFIFO, 0))
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#endif
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#ifdef NEED_DECOY_PERMISSIONS /* OS/2, really */
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#define S_IRUSR S_IREAD
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#define S_IWUSR S_IWRITE
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#define S_IXUSR S_IEXEC
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#define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
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#define S_IRGRP S_IREAD
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#define S_IWGRP S_IWRITE
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#define S_IXGRP S_IEXEC
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#define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
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#define S_IROTH S_IREAD
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#define S_IWOTH S_IWRITE
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#define S_IXOTH S_IEXEC
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#define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
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#else /* ! NEED_DECOY_PERMISSIONS */
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#ifndef S_IRUSR
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#define S_IRUSR 0400
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#define S_IWUSR 0200
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#define S_IXUSR 0100
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/* Read, write, and execute by owner. */
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#define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
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#define S_IRGRP (S_IRUSR >> 3) /* Read by group. */
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#define S_IWGRP (S_IWUSR >> 3) /* Write by group. */
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#define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */
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/* Read, write, and execute by group. */
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#define S_IRWXG (S_IRWXU >> 3)
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#define S_IROTH (S_IRGRP >> 3) /* Read by others. */
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#define S_IWOTH (S_IWGRP >> 3) /* Write by others. */
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#define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */
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/* Read, write, and execute by others. */
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#define S_IRWXO (S_IRWXG >> 3)
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#endif /* !def S_IRUSR */
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#endif /* NEED_DECOY_PERMISSIONS */
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#if defined(POSIX) || defined(HAVE_UNISTD_H)
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#include <unistd.h>
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#include <limits.h>
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#else
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off_t lseek ();
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#endif
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#if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <time.h>
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#else
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# if HAVE_SYS_TIME_H
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# include <sys/time.h>
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# else
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# include <time.h>
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# endif
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#endif
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#ifdef HAVE_IO_H
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#include <io.h>
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#endif
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#ifdef HAVE_DIRECT_H
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#include <direct.h>
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#endif
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#ifdef timezone
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#undef timezone /* needed for sgi */
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#endif
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#ifdef HAVE_SYS_TIMEB_H
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#include <sys/timeb.h>
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#else
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struct timeb {
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time_t time; /* Seconds since the epoch */
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unsigned short millitm; /* Field not used */
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short timezone;
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short dstflag; /* Field not used */
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};
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#endif
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#if !defined(HAVE_FTIME) && !defined(HAVE_TIMEZONE)
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#if !defined(timezone)
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extern long timezone;
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#endif
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#endif
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/*
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** MAXPATHLEN and PATH_MAX
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**
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** On most systems MAXPATHLEN is defined in sys/param.h to be 1024. Of
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** those that this is not true, again most define PATH_MAX in limits.h
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** or sys/limits.h which usually gets included by limits.h. On the few
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** remaining systems that neither statement is true, _POSIX_PATH_MAX
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** is defined.
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**
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** So:
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** 1. If PATH_MAX is defined just use it.
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** 2. If MAXPATHLEN is defined but not PATH_MAX, then define
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** PATH_MAX in terms of MAXPATHLEN.
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** 3. If neither is defined, include limits.h and check for
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** PATH_MAX again.
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** 3.1 If we now have PATHSIZE, define PATH_MAX in terms of that.
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** and ignore the rest. Since _POSIX_PATH_MAX (checked for
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** next) is the *most* restrictive (smallest) value, if we
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** trust _POSIX_PATH_MAX, several of our buffers are too small.
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** 4. If PATH_MAX is still not defined but _POSIX_PATH_MAX is,
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** then define PATH_MAX in terms of _POSIX_PATH_MAX.
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** 5. And if even _POSIX_PATH_MAX doesn't exist just put in
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** a reasonable value.
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** *. All in all, this is an excellent argument for using pathconf()
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** when at all possible. Or better yet, dynamically allocate
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** our buffers and use getcwd() not getwd().
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**
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** This works on:
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** Sun Sparc 10 SunOS 4.1.3 & Solaris 1.2
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** HP 9000/700 HP/UX 8.07 & HP/UX 9.01
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** Tektronix XD88/10 UTekV 3.2e
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** IBM RS6000 AIX 3.2
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** Dec Alpha OSF 1 ????
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** Intel 386 BSDI BSD/386
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** Intel 386 SCO OpenServer Release 5
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** Apollo Domain 10.4
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** NEC SVR4
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*/
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/* On MOST systems this will get you MAXPATHLEN.
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Windows NT doesn't have this file, tho. */
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifndef PATH_MAX
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# ifdef MAXPATHLEN
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# define PATH_MAX MAXPATHLEN
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# else
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# include <limits.h>
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# ifndef PATH_MAX
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# ifdef PATHSIZE
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# define PATH_MAX PATHSIZE
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# else /* no PATHSIZE */
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# ifdef _POSIX_PATH_MAX
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# define PATH_MAX _POSIX_PATH_MAX
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# else
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# define PATH_MAX 1024
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# endif /* no _POSIX_PATH_MAX */
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# endif /* no PATHSIZE */
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# endif /* no PATH_MAX */
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# endif /* MAXPATHLEN */
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#endif /* PATH_MAX */
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/* The NeXT (without _POSIX_SOURCE, which we don't want) has a utime.h
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which doesn't define anything. It would be cleaner to have configure
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check for struct utimbuf, but for now I'm checking NeXT here (so I don't
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have to debug the configure check across all the machines). */
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#if defined (HAVE_UTIME_H) && !defined (NeXT)
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# include <utime.h>
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#else
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# if defined (HAVE_SYS_UTIME_H)
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# include <sys/utime.h>
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# else
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# ifndef ALTOS
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struct utimbuf
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{
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long actime;
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long modtime;
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};
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# endif
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int utime ();
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# endif
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#endif
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#if STDC_HEADERS || HAVE_STRING_H
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# include <string.h>
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/* An ANSI string.h and pre-ANSI memory.h might conflict. */
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# if !STDC_HEADERS && HAVE_MEMORY_H
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# include <memory.h>
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# endif /* not STDC_HEADERS and HAVE_MEMORY_H */
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#else /* not STDC_HEADERS and not HAVE_STRING_H */
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# include <strings.h>
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/* memory.h and strings.h conflict on some systems. */
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#endif /* not STDC_HEADERS and not HAVE_STRING_H */
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#ifndef ERRNO_H_MISSING
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#include <errno.h>
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#endif
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/* Not all systems set the same error code on a non-existent-file
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error. This tries to ask the question somewhat portably.
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On systems that don't have ENOTEXIST, this should behave just like
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x == ENOENT. "x" is probably errno, of course. */
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#ifdef ENOTEXIST
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# ifdef EOS2ERR
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# define existence_error(x) \
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(((x) == ENOTEXIST) || ((x) == ENOENT) || ((x) == EOS2ERR))
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# else
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# define existence_error(x) \
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(((x) == ENOTEXIST) || ((x) == ENOENT))
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# endif
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#else
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# ifdef EVMSERR
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# define existence_error(x) \
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((x) == ENOENT || (x) == EINVAL || (x) == EVMSERR)
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# else
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# define existence_error(x) ((x) == ENOENT)
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# endif
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#endif
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#ifdef STDC_HEADERS
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#include <stdlib.h>
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#else
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char *getenv ();
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char *malloc ();
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char *realloc ();
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char *calloc ();
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extern int errno;
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#endif
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/* SunOS4 apparently does not define this in stdlib.h. */
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#ifndef EXIT_FAILURE
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#define EXIT_FAILURE 1
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#endif
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#if defined(USG) || defined(POSIX)
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char *getcwd ();
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#else
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char *getwd ();
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#endif
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/* check for POSIX signals */
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#if defined(HAVE_SIGACTION) && defined(HAVE_SIGPROCMASK)
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# define POSIX_SIGNALS
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#endif
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/* MINIX 1.6 doesn't properly support sigaction */
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#if defined(_MINIX)
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# undef POSIX_SIGNALS
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#endif
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/* If !POSIX, try for BSD.. Reason: 4.4BSD implements these as wrappers */
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#if !defined(POSIX_SIGNALS)
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# if defined(HAVE_SIGVEC) && defined(HAVE_SIGSETMASK) && defined(HAVE_SIGBLOCK)
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# define BSD_SIGNALS
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# endif
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#endif
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/* Under OS/2, this must be included _after_ stdio.h; that's why we do
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it here. */
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#ifdef USE_OWN_TCPIP_H
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#include "tcpip.h"
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#endif
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#else
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#include <sys/file.h>
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#endif
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#ifndef SEEK_SET
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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#endif
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#ifndef F_OK
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#define F_OK 0
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#define X_OK 1
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#define W_OK 2
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#define R_OK 4
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#endif
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#if HAVE_DIRENT_H
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# include <dirent.h>
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# define NAMLEN(dirent) strlen((dirent)->d_name)
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#else
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# define dirent direct
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# define NAMLEN(dirent) (dirent)->d_namlen
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# if HAVE_SYS_NDIR_H
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# include <sys/ndir.h>
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# endif
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# if HAVE_SYS_DIR_H
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# include <sys/dir.h>
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# endif
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# if HAVE_NDIR_H
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# include <ndir.h>
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# endif
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#endif
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/* Convert B 512-byte blocks to kilobytes if K is nonzero,
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otherwise return it unchanged. */
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#define convert_blocks(b, k) ((k) ? ((b) + 1) / 2 : (b))
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#ifndef S_ISLNK
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#define lstat stat
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#endif
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/*
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* Some UNIX distributions don't include these in their stat.h Defined here
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* because "config.h" is always included last.
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*/
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#ifndef S_IWRITE
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#define S_IWRITE 0000200 /* write permission, owner */
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#endif
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#ifndef S_IWGRP
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#define S_IWGRP 0000020 /* write permission, grougroup */
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#endif
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#ifndef S_IWOTH
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#define S_IWOTH 0000002 /* write permission, other */
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#endif
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/* Under non-UNIX operating systems (MS-DOS, WinNT, MacOS), many filesystem
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calls take only one argument; permission is handled very differently on
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those systems than in Unix. So we leave such systems a hook on which they
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can hang their own definitions. */
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#ifndef CVS_ACCESS
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#define CVS_ACCESS access
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#endif
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#ifndef CVS_CHDIR
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#define CVS_CHDIR chdir
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#endif
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#ifndef CVS_CREAT
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#define CVS_CREAT creat
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#endif
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#ifndef CVS_FOPEN
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#define CVS_FOPEN fopen
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#endif
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#ifndef CVS_MKDIR
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#define CVS_MKDIR mkdir
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#endif
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#ifndef CVS_OPEN
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#define CVS_OPEN open
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#endif
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#ifndef CVS_OPENDIR
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#define CVS_OPENDIR opendir
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#endif
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#ifndef CVS_RENAME
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#define CVS_RENAME rename
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#endif
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#ifndef CVS_RMDIR
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#define CVS_RMDIR rmdir
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#endif
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#ifndef CVS_STAT
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#define CVS_STAT stat
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#endif
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#ifndef CVS_UNLINK
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#define CVS_UNLINK unlink
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#endif
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/* Some file systems are case-insensitive. If FOLD_FN_CHAR is
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#defined, it maps the character C onto its "canonical" form. In a
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case-insensitive system, it would map all alphanumeric characters
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to lower case. Under Windows NT, / and \ are both path component
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separators, so FOLD_FN_CHAR would map them both to /. */
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#ifndef FOLD_FN_CHAR
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#define FOLD_FN_CHAR(c) (c)
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#define fnfold(filename) (filename)
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#define fncmp strcmp
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#endif
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/* Different file systems have different path component separators.
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For the VMS port we might need to abstract further back than this. */
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#ifndef ISDIRSEP
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#define ISDIRSEP(c) ((c) == '/')
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#endif
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/* On some systems, lines in text files should be terminated with CRLF,
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not just LF, and the read and write routines do this translation
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for you. LINES_CRLF_TERMINATED is #defined on such systems.
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- OPEN_BINARY is the flag to pass to the open function for
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untranslated I/O.
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- FOPEN_BINARY_READ is the string to pass to fopen to get
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untranslated reading.
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- FOPEN_BINARY_WRITE is the string to pass to fopen to get
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untranslated writing. */
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#if LINES_CRLF_TERMINATED
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#define OPEN_BINARY (O_BINARY)
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#define FOPEN_BINARY_READ ("rb")
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#define FOPEN_BINARY_WRITE ("wb")
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#else
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#define OPEN_BINARY (0)
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#define FOPEN_BINARY_READ ("r")
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#define FOPEN_BINARY_WRITE ("w")
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#endif
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