tar-1.29HEADtar-1.29master

1 files changed, 490 insertions, 0 deletions

diff --git a/lib/system.h b/lib/system.h
new file mode 100644
index 0000000..e7f531c
--- /dev/null
+++ b/lib/system.h
@@ -0,0 +1,490 @@
+/* System dependent definitions for GNU tar.
+
+   Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003,
+   2004, 2005, 2006, 2007 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 3, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <alloca.h>
+
+#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later.  */
+# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+#  define __attribute__(spec) /* empty */
+# endif
+#endif
+
+#include <sys/types.h>
+#include <ctype.h>
+
+/* IN_CTYPE_DOMAIN (C) is nonzero if the unsigned char C can safely be given
+   as an argument to <ctype.h> macros like `isspace'.  */
+#if STDC_HEADERS
+# define IN_CTYPE_DOMAIN(c) 1
+#else
+# define IN_CTYPE_DOMAIN(c) ((unsigned) (c) <= 0177)
+#endif
+
+#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
+#define ISODIGIT(c) ((unsigned) (c) - '0' <= 7)
+#define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
+#define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
+
+/* Declare string and memory handling routines.  Take care that an ANSI
+   string.h and pre-ANSI memory.h might conflict, and that memory.h and
+   strings.h conflict on some systems.  */
+
+#if STDC_HEADERS || HAVE_STRING_H
+# include <string.h>
+# if !STDC_HEADERS && HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+#else
+# include <strings.h>
+# ifndef strchr
+#  define strchr index
+# endif
+# ifndef strrchr
+#  define strrchr rindex
+# endif
+# ifndef memcpy
+#  define memcpy(d, s, n) bcopy ((char const *) (s), (char *) (d), n)
+# endif
+# ifndef memcmp
+#  define memcmp(a, b, n) bcmp ((char const *) (a), (char const *) (b), n)
+# endif
+#endif
+
+/* Declare errno.  */
+
+#include <errno.h>
+#ifndef errno
+extern int errno;
+#endif
+
+/* Declare open parameters.  */
+
+#if HAVE_FCNTL_H
+# include <fcntl.h>
+#else
+# include <sys/file.h>
+#endif
+				/* Pick only one of the next three: */
+#ifndef O_RDONLY
+# define O_RDONLY	0	/* only allow read */
+#endif
+#ifndef O_WRONLY
+# define O_WRONLY	1	/* only allow write */
+#endif
+#ifndef O_RDWR
+# define O_RDWR		2	/* both are allowed */
+#endif
+#ifndef O_ACCMODE
+# define O_ACCMODE (O_RDONLY | O_RDWR | O_WRONLY)
+#endif
+				/* The rest can be OR-ed in to the above: */
+#ifndef O_CREAT
+# define O_CREAT	8	/* create file if needed */
+#endif
+#ifndef O_EXCL
+# define O_EXCL		16	/* file cannot already exist */
+#endif
+#ifndef O_TRUNC
+# define O_TRUNC	32	/* truncate file on open */
+#endif
+
+#ifndef O_BINARY
+# define O_BINARY 0
+#endif
+#ifndef O_DIRECTORY
+# define O_DIRECTORY 0
+#endif
+#ifndef O_NOATIME
+# define O_NOATIME 0
+#endif
+#ifndef O_NONBLOCK
+# define O_NONBLOCK 0
+#endif
+
+/* Declare file status routines and bits.  */
+
+#include <sys/stat.h>
+
+#if !HAVE_LSTAT && !defined lstat
+# define lstat stat
+#endif
+
+#if STX_HIDDEN && !_LARGE_FILES /* AIX */
+# ifdef stat
+#  undef stat
+# endif
+# define stat(file_name, buf) statx (file_name, buf, STATSIZE, STX_HIDDEN)
+# ifdef lstat
+#  undef lstat
+# endif
+# define lstat(file_name, buf) statx (file_name, buf, STATSIZE, STX_HIDDEN | STX_LINK)
+#endif
+
+#if STAT_MACROS_BROKEN
+# undef S_ISBLK
+# undef S_ISCHR
+# undef S_ISCTG
+# undef S_ISDIR
+# undef S_ISFIFO
+# undef S_ISLNK
+# undef S_ISREG
+# undef S_ISSOCK
+#endif
+
+/* On MSDOS, there are missing things from <sys/stat.h>.  */
+#if MSDOS
+# define S_ISUID 0
+# define S_ISGID 0
+# define S_ISVTX 0
+#endif
+
+#ifndef S_ISDIR
+# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
+#endif
+#ifndef S_ISREG
+# define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
+#endif
+
+#ifndef S_ISBLK
+# ifdef S_IFBLK
+#  define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
+# else
+#  define S_ISBLK(mode) 0
+# endif
+#endif
+#ifndef S_ISCHR
+# ifdef S_IFCHR
+#  define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
+# else
+#  define S_ISCHR(mode) 0
+# endif
+#endif
+#ifndef S_ISCTG
+# ifdef S_IFCTG
+#  define S_ISCTG(mode) (((mode) & S_IFMT) == S_IFCTG)
+# else
+#  define S_ISCTG(mode) 0
+# endif
+#endif
+#ifndef S_ISDOOR
+# define S_ISDOOR(mode) 0
+#endif
+#ifndef S_ISFIFO
+# ifdef S_IFIFO
+#  define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
+# else
+#  define S_ISFIFO(mode) 0
+# endif
+#endif
+#ifndef S_ISLNK
+# ifdef S_IFLNK
+#  define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
+# else
+#  define S_ISLNK(mode) 0
+# endif
+#endif
+#ifndef S_ISSOCK
+# ifdef S_IFSOCK
+#  define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
+# else
+#  define S_ISSOCK(mode) 0
+# endif
+#endif
+
+#if !HAVE_MKFIFO && !defined mkfifo && defined S_IFIFO
+# define mkfifo(file_name, mode) (mknod (file_name, (mode) | S_IFIFO, 0))
+#endif
+
+#ifndef S_ISUID
+# define S_ISUID 0004000
+#endif
+#ifndef S_ISGID
+# define S_ISGID 0002000
+#endif
+#ifndef S_ISVTX
+# define S_ISVTX 0001000
+#endif
+#ifndef S_IRUSR
+# define S_IRUSR 0000400
+#endif
+#ifndef S_IWUSR
+# define S_IWUSR 0000200
+#endif
+#ifndef S_IXUSR
+# define S_IXUSR 0000100
+#endif
+#ifndef S_IRGRP
+# define S_IRGRP 0000040
+#endif
+#ifndef S_IWGRP
+# define S_IWGRP 0000020
+#endif
+#ifndef S_IXGRP
+# define S_IXGRP 0000010
+#endif
+#ifndef S_IROTH
+# define S_IROTH 0000004
+#endif
+#ifndef S_IWOTH
+# define S_IWOTH 0000002
+#endif
+#ifndef S_IXOTH
+# define S_IXOTH 0000001
+#endif
+
+#define MODE_WXUSR	(S_IWUSR | S_IXUSR)
+#define MODE_R		(S_IRUSR | S_IRGRP | S_IROTH)
+#define MODE_RW		(S_IWUSR | S_IWGRP | S_IWOTH | MODE_R)
+#define MODE_RWX	(S_IXUSR | S_IXGRP | S_IXOTH | MODE_RW)
+#define MODE_ALL	(S_ISUID | S_ISGID | S_ISVTX | MODE_RWX)
+
+/* Include <unistd.h> before any preprocessor test of _POSIX_VERSION.  */
+#include <unistd.h>
+
+#ifndef SEEK_SET
+# define SEEK_SET 0
+#endif
+#ifndef SEEK_CUR
+# define SEEK_CUR 1
+#endif
+#ifndef SEEK_END
+# define SEEK_END 2
+#endif
+
+#ifndef STDIN_FILENO
+# define STDIN_FILENO 0
+#endif
+#ifndef STDOUT_FILENO
+# define STDOUT_FILENO 1
+#endif
+#ifndef STDERR_FILENO
+# define STDERR_FILENO 2
+#endif
+
+/* Declare make device, major and minor.  Since major is a function on
+   SVR4, we have to resort to GOT_MAJOR instead of just testing if
+   major is #define'd.  */
+
+#if MAJOR_IN_MKDEV
+# include <sys/mkdev.h>
+# if !defined(makedev) && defined(mkdev)
+#  define makedev(a,b) mkdev((a),(b))
+# endif
+# define GOT_MAJOR
+#endif
+
+#if MAJOR_IN_SYSMACROS
+# include <sys/sysmacros.h>
+# define GOT_MAJOR
+#endif
+
+/* Some <sys/types.h> defines the macros. */
+#ifdef major
+# define GOT_MAJOR
+#endif
+
+#ifndef GOT_MAJOR
+# if MSDOS
+#  define major(device)		(device)
+#  define minor(device)		(device)
+#  define makedev(major, minor)	(((major) << 8) | (minor))
+#  define GOT_MAJOR
+# endif
+#endif
+
+/* For HP-UX before HP-UX 8, major/minor are not in <sys/sysmacros.h>.  */
+#ifndef GOT_MAJOR
+# if defined(hpux) || defined(__hpux__) || defined(__hpux)
+#  include <sys/mknod.h>
+#  define GOT_MAJOR
+# endif
+#endif
+
+#ifndef GOT_MAJOR
+# define major(device)		(((device) >> 8) & 0xff)
+# define minor(device)		((device) & 0xff)
+# define makedev(major, minor)	(((major) << 8) | (minor))
+#endif
+
+#undef GOT_MAJOR
+
+/* Declare wait status.  */
+
+#if HAVE_SYS_WAIT_H
+# include <sys/wait.h>
+#endif
+#ifndef WEXITSTATUS
+# define WEXITSTATUS(s)	(((s) >> 8) & 0xff)
+#endif
+#ifndef WIFSIGNALED
+# define WIFSIGNALED(s)	(((s) & 0xffff) - 1 < (unsigned) 0xff)
+#endif
+#ifndef WTERMSIG
+# define WTERMSIG(s)	((s) & 0x7f)
+#endif
+
+/* FIXME: It is wrong to use BLOCKSIZE for buffers when the logical block
+   size is greater than 512 bytes; so ST_BLKSIZE code below, in preparation
+   for some cleanup in this area, later.  */
+
+/* Extract or fake data from a `struct stat'.  ST_BLKSIZE gives the
+   optimal I/O blocksize for the file, in bytes.  Some systems, like
+   Sequents, return st_blksize of 0 on pipes.  */
+
+#define DEFAULT_ST_BLKSIZE 512
+
+#if !HAVE_ST_BLKSIZE
+# define ST_BLKSIZE(statbuf) DEFAULT_ST_BLKSIZE
+#else
+# define ST_BLKSIZE(statbuf) \
+    ((statbuf).st_blksize > 0 ? (statbuf).st_blksize : DEFAULT_ST_BLKSIZE)
+#endif
+
+/* Extract or fake data from a `struct stat'.  ST_NBLOCKS gives the
+   number of ST_NBLOCKSIZE-byte blocks in the file (including indirect blocks).
+   HP-UX counts st_blocks in 1024-byte units,
+   this loses when mixing HP-UX and BSD filesystems with NFS.  AIX PS/2
+   counts st_blocks in 4K units.  */
+
+#if !HAVE_ST_BLOCKS
+# if defined(_POSIX_SOURCE) || !defined(BSIZE)
+#  define ST_NBLOCKS(statbuf) ((statbuf).st_size / ST_NBLOCKSIZE + ((statbuf).st_size % ST_NBLOCKSIZE != 0))
+# else
+   off_t st_blocks ();
+#  define ST_NBLOCKS(statbuf) (st_blocks ((statbuf).st_size))
+# endif
+#else
+# define ST_NBLOCKS(statbuf) ((statbuf).st_blocks)
+# if defined(hpux) || defined(__hpux__) || defined(__hpux)
+#  define ST_NBLOCKSIZE 1024
+# else
+#  if defined(_AIX) && defined(_I386)
+#   define ST_NBLOCKSIZE (4 * 1024)
+#  endif
+# endif
+#endif
+
+#ifndef ST_NBLOCKSIZE
+# define ST_NBLOCKSIZE 512
+#endif
+
+/* Network Appliance file systems store small files directly in the
+   inode if st_size <= 64; in this case the number of blocks can be
+   zero.  Perhaps other file systems have similar problems; so,
+   somewhat arbitrarily, do not consider a file to be sparse if
+   it has no blocks but st_size < ST_NBLOCKSIZE.  */
+#define ST_IS_SPARSE(st)                                  \
+  (ST_NBLOCKS (st)                                        \
+   < ((st).st_size / ST_NBLOCKSIZE			  \
+      + ((st).st_size % ST_NBLOCKSIZE != 0		  \
+	 && (st).st_size / ST_NBLOCKSIZE != 0)))
+
+/* Declare standard functions.  */
+
+#if STDC_HEADERS
+# include <stdlib.h>
+#else
+void *malloc ();
+char *getenv ();
+#endif
+
+#include <stdbool.h>
+#include <stddef.h>
+
+#include <stdio.h>
+#if !defined _POSIX_VERSION && MSDOS
+# include <io.h>
+#endif
+
+#if WITH_DMALLOC
+# define DMALLOC_FUNC_CHECK
+# include <dmalloc.h>
+#endif
+
+#include <limits.h>
+
+#ifndef MB_LEN_MAX
+# define MB_LEN_MAX 1
+#endif
+
+#include <inttypes.h>
+
+#include <intprops.h>
+
+#define UINTMAX_STRSIZE_BOUND INT_BUFSIZE_BOUND (uintmax_t)
+
+/* Prototypes for external functions.  */
+
+#if HAVE_LOCALE_H
+# include <locale.h>
+#endif
+#if !HAVE_SETLOCALE
+# define setlocale(category, locale) /* empty */
+#endif
+
+#include <time.h>
+#ifdef TIME_WITH_SYS_TIME
+# include <sys/time.h>
+#endif
+
+/* Library modules.  */
+
+#include <dirname.h>
+#include <error.h>
+#include <savedir.h>
+#include <unlocked-io.h>
+#include <xalloc.h>
+
+#include <gettext.h>
+#define _(msgid) gettext (msgid)
+#define N_(msgid) msgid
+
+#ifdef HAVE_PWD_H
+# include <pwd.h>
+#endif
+#ifdef HAVE_GRP_H
+# include <grp.h>
+#endif
+
+#if MSDOS
+# include <process.h>
+# define SET_BINARY_MODE(arc) setmode(arc, O_BINARY)
+# define ERRNO_IS_EACCES errno == EACCES
+# define mkdir(file, mode) (mkdir) (file)
+# define TTY_NAME "con"
+# define sys_reset_uid_gid()
+#else
+# define SET_BINARY_MODE(arc)
+# define ERRNO_IS_EACCES 0
+# define TTY_NAME "/dev/tty"
+# define sys_reset_uid_gid()					\
+  do {								\
+    if (! (setuid (getuid ()) == 0 && setgid (getgid ()) == 0)) \
+      abort ();							\
+  } while (0)
+#endif
+
+#if XENIX
+# include <sys/inode.h>
+#endif