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- /* system-dependent definitions for CVS.
- Copyright (C) 1989-1992 Free Software Foundation, Inc.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* $CVSid: @(#)system.h 1.18 94/09/25 $ */
-
- #include <sys/types.h>
- #include <sys/stat.h>
-
- #ifdef STAT_MACROS_BROKEN
- #undef S_ISBLK
- #undef S_ISCHR
- #undef S_ISDIR
- #undef S_ISREG
- #undef S_ISFIFO
- #undef S_ISLNK
- #undef S_ISSOCK
- #undef S_ISMPB
- #undef S_ISMPC
- #undef S_ISNWK
- #endif
-
- /* Not all systems have S_IFMT, but we probably want to use it if we
- do. See ChangeLog for a more detailed discussion. */
-
- #if !defined(S_ISBLK) && defined(S_IFBLK)
- # if defined(S_IFMT)
- # define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
- # else
- # define S_ISBLK(m) ((m) & S_IFBLK)
- # endif
- #endif
-
- #if !defined(S_ISCHR) && defined(S_IFCHR)
- # if defined(S_IFMT)
- # define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
- # else
- # define S_ISCHR(m) ((m) & S_IFCHR)
- # endif
- #endif
-
- #if !defined(S_ISDIR) && defined(S_IFDIR)
- # if defined(S_IFMT)
- # define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
- # else
- # define S_ISDIR(m) ((m) & S_IFDIR)
- # endif
- #endif
-
- #if !defined(S_ISREG) && defined(S_IFREG)
- # if defined(S_IFMT)
- # define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
- # else
- # define S_ISREG(m) ((m) & S_IFREG)
- # endif
- #endif
-
- #if !defined(S_ISFIFO) && defined(S_IFIFO)
- # if defined(S_IFMT)
- # define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
- # else
- # define S_ISFIFO(m) ((m) & S_IFIFO)
- # endif
- #endif
-
- #if !defined(S_ISLNK) && defined(S_IFLNK)
- # if defined(S_IFMT)
- # define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
- # else
- # define S_ISLNK(m) ((m) & S_IFLNK)
- # endif
- #endif
-
- #if !defined(S_ISSOCK) && defined(S_IFSOCK)
- # if defined(S_IFMT)
- # define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK)
- # else
- # define S_ISSOCK(m) ((m) & S_IFSOCK)
- # endif
- #endif
-
- #if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
- # if defined(S_IFMT)
- # define S_ISMPB(m) (((m) & S_IFMT) == S_IFMPB)
- # define S_ISMPC(m) (((m) & S_IFMT) == S_IFMPC)
- # else
- # define S_ISMPB(m) ((m) & S_IFMPB)
- # define S_ISMPC(m) ((m) & S_IFMPC)
- # endif
- #endif
-
- #if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
- # if defined(S_IFMT)
- # define S_ISNWK(m) (((m) & S_IFMT) == S_IFNWK)
- # else
- # define S_ISNWK(m) ((m) & S_IFNWK)
- # endif
- #endif
-
- #if !defined(HAVE_MKFIFO)
- #define mkfifo(path, mode) (mknod ((path), (mode) | S_IFIFO, 0))
- #endif
-
- #ifdef NEED_DECOY_PERMISSIONS /* OS/2, really */
-
- #define S_IRUSR S_IREAD
- #define S_IWUSR S_IWRITE
- #define S_IXUSR S_IEXEC
- #define S_IRWXU (S_IRUSR | S_IWUSR | S_IXUSR)
- #define S_IRGRP S_IREAD
- #define S_IWGRP S_IWRITE
- #define S_IXGRP S_IEXEC
- #define S_IRWXG (S_IRGRP | S_IWGRP | S_IXGRP)
- #define S_IROTH S_IREAD
- #define S_IWOTH S_IWRITE
- #define S_IXOTH S_IEXEC
- #define S_IRWXO (S_IROTH | S_IWOTH | S_IXOTH)
-
- #else /* ! NEED_DECOY_PERMISSIONS */
-
- #ifndef S_IRUSR
- #define S_IRUSR 0400
- #define S_IWUSR 0200
- #define S_IXUSR 0100
- /* Read, write, and execute by owner. */
- #define S_IRWXU (S_IRUSR|S_IWUSR|S_IXUSR)
-
- #define S_IRGRP (S_IRUSR >> 3) /* Read by group. */
- #define S_IWGRP (S_IWUSR >> 3) /* Write by group. */
- #define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */
- /* Read, write, and execute by group. */
- #define S_IRWXG (S_IRWXU >> 3)
-
- #define S_IROTH (S_IRGRP >> 3) /* Read by others. */
- #define S_IWOTH (S_IWGRP >> 3) /* Write by others. */
- #define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */
- /* Read, write, and execute by others. */
- #define S_IRWXO (S_IRWXG >> 3)
- #endif /* !def S_IRUSR */
- #endif /* NEED_DECOY_PERMISSIONS */
-
- #if defined(POSIX) || defined(HAVE_UNISTD_H)
- #include <unistd.h>
- #include <limits.h>
- #else
- off_t lseek ();
- #endif
-
- #if TIME_WITH_SYS_TIME
- # include <sys/time.h>
- # include <time.h>
- #else
- # if HAVE_SYS_TIME_H
- # include <sys/time.h>
- # else
- # include <time.h>
- # endif
- #endif
-
- #ifdef HAVE_IO_H
- #include <io.h>
- #endif
-
- #ifdef HAVE_DIRECT_H
- #include <direct.h>
- #endif
-
- #ifdef timezone
- #undef timezone /* needed for sgi */
- #endif
-
- #ifdef HAVE_SYS_TIMEB_H
- #include <sys/timeb.h>
- #else
- struct timeb {
- time_t time; /* Seconds since the epoch */
- unsigned short millitm; /* Field not used */
- short timezone;
- short dstflag; /* Field not used */
- };
- #endif
-
- #if !defined(HAVE_FTIME) && !defined(HAVE_TIMEZONE)
- #if !defined(timezone)
- extern long timezone;
- #endif
- #endif
-
-
- /*
- ** MAXPATHLEN and PATH_MAX
- **
- ** On most systems MAXPATHLEN is defined in sys/param.h to be 1024. Of
- ** those that this is not true, again most define PATH_MAX in limits.h
- ** or sys/limits.h which usually gets included by limits.h. On the few
- ** remaining systems that neither statement is true, _POSIX_PATH_MAX
- ** is defined.
- **
- ** So:
- ** 1. If PATH_MAX is defined just use it.
- ** 2. If MAXPATHLEN is defined but not PATH_MAX, then define
- ** PATH_MAX in terms of MAXPATHLEN.
- ** 3. If neither is defined, include limits.h and check for
- ** PATH_MAX again.
- ** 3.1 If we now have PATHSIZE, define PATH_MAX in terms of that.
- ** and ignore the rest. Since _POSIX_PATH_MAX (checked for
- ** next) is the *most* restrictive (smallest) value, if we
- ** trust _POSIX_PATH_MAX, several of our buffers are too small.
- ** 4. If PATH_MAX is still not defined but _POSIX_PATH_MAX is,
- ** then define PATH_MAX in terms of _POSIX_PATH_MAX.
- ** 5. And if even _POSIX_PATH_MAX doesn't exist just put in
- ** a reasonable value.
- ** *. All in all, this is an excellent argument for using pathconf()
- ** when at all possible. Or better yet, dynamically allocate
- ** our buffers and use getcwd() not getwd().
- **
- ** This works on:
- ** Sun Sparc 10 SunOS 4.1.3 & Solaris 1.2
- ** HP 9000/700 HP/UX 8.07 & HP/UX 9.01
- ** Tektronix XD88/10 UTekV 3.2e
- ** IBM RS6000 AIX 3.2
- ** Dec Alpha OSF 1 ????
- ** Intel 386 BSDI BSD/386
- ** Intel 386 SCO OpenServer Release 5
- ** Apollo Domain 10.4
- ** NEC SVR4
- */
-
- /* On MOST systems this will get you MAXPATHLEN.
- Windows NT doesn't have this file, tho. */
- #ifdef HAVE_SYS_PARAM_H
- #include <sys/param.h>
- #endif
-
- #ifndef PATH_MAX
- # ifdef MAXPATHLEN
- # define PATH_MAX MAXPATHLEN
- # else
- # include <limits.h>
- # ifndef PATH_MAX
- # ifdef PATHSIZE
- # define PATH_MAX PATHSIZE
- # else /* no PATHSIZE */
- # ifdef _POSIX_PATH_MAX
- # define PATH_MAX _POSIX_PATH_MAX
- # else
- # define PATH_MAX 1024
- # endif /* no _POSIX_PATH_MAX */
- # endif /* no PATHSIZE */
- # endif /* no PATH_MAX */
- # endif /* MAXPATHLEN */
- #endif /* PATH_MAX */
-
-
- /* The NeXT (without _POSIX_SOURCE, which we don't want) has a utime.h
- which doesn't define anything. It would be cleaner to have configure
- check for struct utimbuf, but for now I'm checking NeXT here (so I don't
- have to debug the configure check across all the machines). */
- #if defined (HAVE_UTIME_H) && !defined (NeXT)
- #include <utime.h>
- #elif defined (HAVE_SYS_UTIME_H)
- # include <sys/utime.h>
- #else
- #ifndef ALTOS
- struct utimbuf
- {
- long actime;
- long modtime;
- };
- #endif
- int utime ();
- #endif
-
- #if STDC_HEADERS || HAVE_STRING_H
- # include <string.h>
- /* An ANSI string.h and pre-ANSI memory.h might conflict. */
- # if !STDC_HEADERS && HAVE_MEMORY_H
- # include <memory.h>
- # endif /* not STDC_HEADERS and HAVE_MEMORY_H */
- #else /* not STDC_HEADERS and not HAVE_STRING_H */
- # include <strings.h>
- /* memory.h and strings.h conflict on some systems. */
- #endif /* not STDC_HEADERS and not HAVE_STRING_H */
-
- #include <errno.h>
-
- /* Not all systems set the same error code on a non-existent-file
- error. This tries to ask the question somewhat portably.
- On systems that don't have ENOTEXIST, this should behave just like
- x == ENOENT. "x" is probably errno, of course. */
-
- #ifdef ENOTEXIST
- # ifdef EOS2ERR
- # define existence_error(x) \
- (((x) == ENOTEXIST) || ((x) == ENOENT) || ((x) == EOS2ERR))
- # else
- # define existence_error(x) \
- (((x) == ENOTEXIST) || ((x) == ENOENT))
- # endif
- #else
- # ifdef EVMSERR
- # define existence_error(x) \
- ((x) == ENOENT || (x) == EINVAL || (x) == EVMSERR)
- # else
- # define existence_error(x) ((x) == ENOENT)
- # endif
- #endif
-
-
- #ifdef STDC_HEADERS
- #include <stdlib.h>
- #else
- char *getenv ();
- char *malloc ();
- char *realloc ();
- char *calloc ();
- extern int errno;
- #endif
-
- /* SunOS4 apparently does not define this in stdlib.h. */
- #ifndef EXIT_FAILURE
- #define EXIT_FAILURE 1
- #endif
-
- #if defined(USG) || defined(POSIX)
- char *getcwd ();
- #else
- char *getwd ();
- #endif
-
- /* check for POSIX signals */
- #if defined(HAVE_SIGACTION) && defined(HAVE_SIGPROCMASK)
- # define POSIX_SIGNALS
- #endif
-
- /* MINIX 1.6 doesn't properly support sigaction */
- #if defined(_MINIX)
- # undef POSIX_SIGNALS
- #endif
-
- /* If !POSIX, try for BSD.. Reason: 4.4BSD implements these as wrappers */
- #if !defined(POSIX_SIGNALS)
- # if defined(HAVE_SIGVEC) && defined(HAVE_SIGSETMASK) && defined(HAVE_SIGBLOCK)
- # define BSD_SIGNALS
- # endif
- #endif
-
- /* Under OS/2, this must be included _after_ stdio.h; that's why we do
- it here. */
- #ifdef USE_OWN_TCPIP_H
- #include "tcpip.h"
- #endif
-
- #ifdef HAVE_FCNTL_H
- #include <fcntl.h>
- #else
- #include <sys/file.h>
- #endif
-
- #ifndef SEEK_SET
- #define SEEK_SET 0
- #define SEEK_CUR 1
- #define SEEK_END 2
- #endif
-
- #ifndef F_OK
- #define F_OK 0
- #define X_OK 1
- #define W_OK 2
- #define R_OK 4
- #endif
-
- #if HAVE_DIRENT_H
- # include <dirent.h>
- # define NAMLEN(dirent) strlen((dirent)->d_name)
- #else
- # define dirent direct
- # define NAMLEN(dirent) (dirent)->d_namlen
- # if HAVE_SYS_NDIR_H
- # include <sys/ndir.h>
- # endif
- # if HAVE_SYS_DIR_H
- # include <sys/dir.h>
- # endif
- # if HAVE_NDIR_H
- # include <ndir.h>
- # endif
- #endif
-
- /* Convert B 512-byte blocks to kilobytes if K is nonzero,
- otherwise return it unchanged. */
- #define convert_blocks(b, k) ((k) ? ((b) + 1) / 2 : (b))
-
- #ifndef S_ISLNK
- #define lstat stat
- #endif
-
- /*
- * Some UNIX distributions don't include these in their stat.h Defined here
- * because "config.h" is always included last.
- */
- #ifndef S_IWRITE
- #define S_IWRITE 0000200 /* write permission, owner */
- #endif
- #ifndef S_IWGRP
- #define S_IWGRP 0000020 /* write permission, grougroup */
- #endif
- #ifndef S_IWOTH
- #define S_IWOTH 0000002 /* write permission, other */
- #endif
-
- /* Under MS-DOS and its derivatives (like Windows NT), mkdir takes only one
- argument; permission is handled very differently on those systems than in
- in Unix. So we leave such systems a hook on which they can hang their
- own definitions. */
- #ifndef CVS_MKDIR
- #define CVS_MKDIR mkdir
- #endif
-
- /* 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
-
-
- /* On some systems, lines in text files should be terminated with CRLF,
- not just LF, and the read and write routines do this translation
- for you. LINES_CRLF_TERMINATED is #defined on such systems.
- - OPEN_BINARY is the flag to pass to the open function for
- untranslated I/O.
- - FOPEN_BINARY_READ is the string to pass to fopen to get
- untranslated reading.
- - FOPEN_BINARY_WRITE is the string to pass to fopen to get
- untranslated writing. */
- #if LINES_CRLF_TERMINATED
- #define OPEN_BINARY (O_BINARY)
- #define FOPEN_BINARY_READ ("rb")
- #define FOPEN_BINARY_WRITE ("wb")
- #else
- #define OPEN_BINARY (0)
- #define FOPEN_BINARY_READ ("r")
- #define FOPEN_BINARY_WRITE ("w")
- #endif
-