571 lines
16 KiB
C
571 lines
16 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 want to use it if we have it.
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The S_IFMT code below looks right (it masks and compares). The
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non-S_IFMT code looks bogus (are there really systems on which
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S_IFBLK, S_IFLNK, &c, each have their own bit? I suspect it was
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written for OS/2 using the IBM C/C++ Tools 2.01 compiler).
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Of course POSIX systems will have S_IS*, so maybe the issue is
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semi-moot. */
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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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#ifndef S_ISSOCK
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# if defined( S_IFSOCK )
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# ifdef 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 /* S_IFMT */
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# elif defined( S_ISNAM )
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/* SCO OpenServer 5.0.6a */
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# define S_ISSOCK S_ISNAM
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# endif /* !S_IFSOCK && S_ISNAM */
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#endif /* !S_ISSOCK */
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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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#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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char *getcwd ();
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#endif
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#include "xtime.h"
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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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/*
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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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#include <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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/* 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_FDOPEN
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# define CVS_FDOPEN fdopen
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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_READDIR
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# define CVS_READDIR readdir
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#endif
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#ifndef CVS_CLOSEDIR
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# define CVS_CLOSEDIR closedir
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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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/* Open question: should CVS_STAT be lstat by default? We need
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to use lstat in order to handle symbolic links correctly with
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the PreservePermissions option. -twp */
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#ifndef CVS_LSTAT
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# define CVS_LSTAT lstat
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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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/* Wildcard matcher. Should be case-insensitive if the system is. */
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#ifndef CVS_FNMATCH
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# define CVS_FNMATCH fnmatch
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#endif
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#ifdef WIN32
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/*
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* According to GNU conventions, we should avoid referencing any macro
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* containing "WIN" as a reference to Microsoft Windows, as we would like to
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* avoid any implication that we consider Microsoft Windows any sort of "win".
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*
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* FIXME: As of 2003-06-09, folks on the GNULIB project were discussing
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* defining a configure macro to define WOE32 appropriately. If they ever do
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* write such a beast, we should use it, though in most cases it would be
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* preferable to avoid referencing any OS or compiler anyhow, per Autoconf
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* convention, and reference only tested features of the system.
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*/
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# define WOE32 1
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#endif /* WIN32 */
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#ifdef WOE32
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/* Under Windows NT, filenames are case-insensitive. */
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# define FILENAMES_CASE_INSENSITIVE 1
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#endif /* WOE32 */
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#ifdef FILENAMES_CASE_INSENSITIVE
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# if defined (__CYGWIN32__) || defined (WOE32)
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/* Under Windows, filenames are case-insensitive, and both / and \
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are path component separators. */
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# define FOLD_FN_CHAR(c) (WNT_filename_classes[(unsigned char) (c)])
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extern unsigned char WNT_filename_classes[];
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/* Is the character C a path name separator? Under
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Windows NT, you can use either / or \. */
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# define ISDIRSEP(c) (FOLD_FN_CHAR(c) == '/')
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# define ISABSOLUTE(s) (ISDIRSEP(s[0]) || FOLD_FN_CHAR(s[0]) >= 'a' && FOLD_FN_CHAR(s[0]) <= 'z' && s[1] == ':' && ISDIRSEP(s[2]))
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# else /* !__CYGWIN32__ && !WOE32 */
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/* As far as I know, only Macintosh OS X & VMS make it here, but any
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* platform defining FILENAMES_CASE_INSENSITIVE which isn't WOE32 or
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* piggy-backing the same could, in theory. Since the OS X fold just folds
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* A-Z into a-z, I'm just allowing it to be used for any case insensitive
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* system which we aren't yet making other specific folds or exceptions for.
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* WOE32 needs its own class since \ and C:\ style absolute paths also need
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* to be accounted for.
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*/
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# if defined(USE_VMS_FILENAMES)
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|
# define FOLD_FN_CHAR(c) (VMS_filename_classes[(unsigned char) (c)])
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|
extern unsigned char VMS_filename_classes[];
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|
# else
|
|
# define FOLD_FN_CHAR(c) (OSX_filename_classes[(unsigned char) (c)])
|
|
extern unsigned char OSX_filename_classes[];
|
|
# endif
|
|
# endif /* __CYGWIN32__ || WOE32 */
|
|
|
|
/* The following need to be declared for all case insensitive filesystems.
|
|
* When not FOLD_FN_CHAR is not #defined, a default definition for these
|
|
* functions is provided later in this header file. */
|
|
|
|
/* Like strcmp, but with the appropriate tweaks for file names. */
|
|
extern int fncmp (const char *n1, const char *n2);
|
|
|
|
/* Fold characters in FILENAME to their canonical forms. */
|
|
extern void fnfold (char *FILENAME);
|
|
|
|
#endif /* FILENAMES_CASE_INSENSITIVE */
|
|
|
|
|
|
|
|
/* Some file systems are case-insensitive. If FOLD_FN_CHAR is
|
|
#defined, it maps the character C onto its "canonical" form. In a
|
|
case-insensitive system, it would map all alphanumeric characters
|
|
to lower case. Under Windows NT, / and \ are both path component
|
|
separators, so FOLD_FN_CHAR would map them both to /. */
|
|
#ifndef FOLD_FN_CHAR
|
|
# define FOLD_FN_CHAR(c) (c)
|
|
# define fnfold(filename) (filename)
|
|
# define fncmp strcmp
|
|
#endif
|
|
|
|
/* Different file systems have different path component separators.
|
|
For the VMS port we might need to abstract further back than this. */
|
|
#ifndef ISDIRSEP
|
|
# define ISDIRSEP(c) ((c) == '/')
|
|
#endif
|
|
|
|
/* Different file systems can have different naming patterns which designate
|
|
* a path as absolute
|
|
*/
|
|
#ifndef ISABSOLUTE
|
|
# define ISABSOLUTE(s) ISDIRSEP(s[0])
|
|
#endif
|
|
|
|
|
|
/* On some systems, we have to be careful about writing/reading files
|
|
in text or binary mode (so in text mode the system can handle CRLF
|
|
vs. LF, VMS text file conventions, &c). We decide to just always
|
|
be careful. That way we don't have to worry about whether text and
|
|
binary differ on this system. We just have to worry about whether
|
|
the system has O_BINARY and "rb". The latter is easy; all ANSI C
|
|
libraries have it, SunOS4 has it, and CVS has used it unguarded
|
|
some places for a while now without complaints (e.g. "rb" in
|
|
server.c (server_updated), since CVS 1.8). The former is just an
|
|
#ifdef. */
|
|
|
|
#define FOPEN_BINARY_READ ("rb")
|
|
#define FOPEN_BINARY_WRITE ("wb")
|
|
#define FOPEN_BINARY_READWRITE ("r+b")
|
|
|
|
#ifdef O_BINARY
|
|
#define OPEN_BINARY (O_BINARY)
|
|
#else
|
|
#define OPEN_BINARY (0)
|
|
#endif
|