GNU tar 1.12

src/system.h

@@ -0,0 +1,492 @@
+/* System dependent definitions for GNU tar.
+   Copyright (C) 1994, 1995, 1996, 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Declare alloca.  AIX requires this to be the first thing in the file.  */
+
+#if __GNUC__
+# define alloca __builtin_alloca
+#else
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+#include <sys/types.h>
+
+/* Declare a generic pointer type.  */
+#if __STDC__ || defined(__TURBOC__)
+# define voidstar void *
+#else
+# define voidstar char *
+#endif
+
+/* Declare ISASCII.  */
+
+#include <ctype.h>
+
+#if STDC_HEADERS
+# define ISASCII(Char) 1
+#else
+# ifdef isascii
+#  define ISASCII(Char) isascii (Char)
+# else
+#  if HAVE_ISASCII
+#   define ISASCII(Char) isascii (Char)
+#  else
+#   define ISASCII(Char) 1
+#  endif
+# endif
+#endif
+
+/* 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(Dst, Src, Num) bcopy (Src, Dst, Num)
+# endif
+# ifndef memcmp
+#  define memcmp(Src1, Src2, Num) bcmp (Src1, Src2, Num)
+# 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
+				/* The rest can be OR-ed in to the above: */
+#ifndef O_NDELAY
+# define O_NDELAY	4	/* don't block on opening devices */
+#endif
+#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_APPEND
+# define O_APPEND	64	/* always write at end of file */
+#endif
+				/* MS-DOG forever, with my love! */
+#ifndef	O_BINARY
+# define O_BINARY 0
+#endif
+				/* Emulate System V 3-argument open call */
+#if EMUL_OPEN3
+# define open open3
+#endif
+
+/* Declare file status routines and bits.  */
+
+#include <sys/stat.h>
+
+#ifndef S_ISLNK
+# define lstat stat
+#endif
+
+#if STAT_MACROS_BROKEN
+# undef S_ISBLK
+# undef S_ISCHR
+# undef S_ISDIR
+# undef S_ISFIFO
+# undef S_ISLNK
+# undef S_ISMPB
+# undef S_ISMPC
+# undef S_ISNWK
+# 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_ISREG			/* POSIX.1 stat stuff missing */
+# define mode_t unsigned short
+#endif
+#if !defined(S_ISBLK) && defined(S_IFBLK)
+# define S_ISBLK(Mode) (((Mode) & S_IFMT) == S_IFBLK)
+#endif
+#if !defined(S_ISCHR) && defined(S_IFCHR)
+# define S_ISCHR(Mode) (((Mode) & S_IFMT) == S_IFCHR)
+#endif
+#if !defined(S_ISDIR) && defined(S_IFDIR)
+# define S_ISDIR(Mode) (((Mode) & S_IFMT) == S_IFDIR)
+#endif
+#if !defined(S_ISREG) && defined(S_IFREG)
+# define S_ISREG(Mode) (((Mode) & S_IFMT) == S_IFREG)
+#endif
+#if !defined(S_ISFIFO) && defined(S_IFIFO)
+# define S_ISFIFO(Mode) (((Mode) & S_IFMT) == S_IFIFO)
+#endif
+#if !defined(S_ISLNK) && defined(S_IFLNK)
+# define S_ISLNK(Mode) (((Mode) & S_IFMT) == S_IFLNK)
+#endif
+#if !defined(S_ISSOCK) && defined(S_IFSOCK)
+# define S_ISSOCK(Mode) (((Mode) & S_IFMT) == S_IFSOCK)
+#endif
+#if !defined(S_ISMPB) && defined(S_IFMPB) /* V7 */
+# define S_ISMPB(Mode) (((Mode) & S_IFMT) == S_IFMPB)
+# define S_ISMPC(Mode) (((Mode) & S_IFMT) == S_IFMPC)
+#endif
+#if !defined(S_ISNWK) && defined(S_IFNWK) /* HP/UX */
+# define S_ISNWK(Mode) (((Mode) & S_IFMT) == S_IFNWK)
+#endif
+
+#if !HAVE_MKFIFO
+# define mkfifo(Path, Mode) (mknod (Path, (Mode) | S_IFIFO, 0))
+#endif
+
+#if !defined(S_ISCTG) && defined(S_IFCTG) /* contiguous file */
+# define S_ISCTG(Mode) (((Mode) & S_IFMT) == S_IFCTG)
+#endif
+#if !defined(S_ISVTX)
+# define S_ISVTX 0001000
+#endif
+
+#ifndef _POSIX_SOURCE
+# include <sys/param.h>
+#endif
+
+/* Include <unistd.h> before any preprocessor test of _POSIX_VERSION.  */
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#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>
+# 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 directory reading routines and structures.  */
+
+#if __TURBOC__
+# include "msd_dir.h"
+# define NAMLEN(dirent) ((dirent)->d_namlen)
+#else
+# 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
+#endif
+
+/* Declare wait status.  */
+
+#if HAVE_SYS_WAIT_H
+# include <sys/wait.h>
+#endif
+
+#if HAVE_UNION_WAIT
+# define WAIT_T union wait
+# ifndef WTERMSIG
+#  define WTERMSIG(Status)     ((Status).w_termsig)
+# endif
+# ifndef WCOREDUMP
+#  define WCOREDUMP(Status)    ((Status).w_coredump)
+# endif
+# ifndef WEXITSTATUS
+#  define WEXITSTATUS(Status)  ((Status).w_retcode)
+# endif
+#else
+# define WAIT_T int
+# ifndef WTERMSIG
+#  define WTERMSIG(Status)     ((Status) & 0x7f)
+# endif
+# ifndef WCOREDUMP
+#  define WCOREDUMP(Status)    ((Status) & 0x80)
+# endif
+# ifndef WEXITSTATUS
+#  define WEXITSTATUS(Status)  (((Status) >> 8) & 0xff)
+# endif
+#endif
+
+#ifndef WIFSTOPPED
+# define WIFSTOPPED(Status)    (WTERMSIG(Status) == 0x7f)
+#endif
+#ifndef WIFSIGNALED
+# define WIFSIGNALED(Status)   (WTERMSIG(Status) != 0)
+#endif
+#ifndef WIFEXITED
+# define WIFEXITED(Status)     (WTERMSIG(Status) == 0)
+#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.  */
+
+/* Get or fake the disk device blocksize.  Usually defined by sys/param.h
+   (if at all).  */
+
+#if !defined(DEV_BSIZE) && defined(BSIZE)
+# define DEV_BSIZE BSIZE
+#endif
+#if !defined(DEV_BSIZE) && defined(BBSIZE) /* SGI */
+# define DEV_BSIZE BBSIZE
+#endif
+#ifndef DEV_BSIZE
+# define DEV_BSIZE 4096
+#endif
+
+/* 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.  */
+
+#if !HAVE_ST_BLKSIZE
+# define ST_BLKSIZE(Statbuf) DEV_BSIZE
+#else
+# define ST_BLKSIZE(Statbuf) \
+    ((Statbuf).st_blksize > 0 ? (Statbuf).st_blksize : DEV_BSIZE)
+#endif
+
+/* Extract or fake data from a `struct stat'.  ST_NBLOCKS gives the
+   number of 512-byte blocks in the file (including indirect blocks).
+   fileblocks.c uses BSIZE.  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 + 512 - 1) / 512)
+# else
+#  define ST_NBLOCKS(Statbuf) (st_blocks ((Statbuf).st_size))
+# endif
+#else
+# if defined(hpux) || defined(__hpux__) || defined(__hpux)
+#  define ST_NBLOCKS(Statbuf) ((Statbuf).st_blocks * 2)
+# else
+#  if defined(_AIX) && defined(_I386)
+#   define ST_NBLOCKS(Statbuf) ((Statbuf).st_blocks * 8)
+#  else
+#   define ST_NBLOCKS(Statbuf) ((Statbuf).st_blocks)
+#  endif
+# endif
+#endif
+
+/* This is a real challenge to properly get MTIO* symbols :-(.  ISC uses
+   <sys/gentape.h>.  SCO and BSDi uses <sys/tape.h>; BSDi also requires
+   <sys/tprintf.h> and <sys/device.h> for defining tp_dev and tpr_t.  It
+   seems that the rest use <sys/mtio.h>, which itself requires other files,
+   depending on systems.  Pyramid defines _IOW in <sgtty.h>, for example.  */
+
+#if HAVE_SYS_GENTAPE_H
+# include <sys/gentape.h>
+#else
+# if HAVE_SYS_TAPE_H
+#  if HAVE_SYS_DEVICE_H
+#   include <sys/device.h>
+#  endif
+#  if HAVE_SYS_BUF_H
+#   include <sys/buf.h>
+#  endif
+#  if HAVE_SYS_TPRINTF_H
+#   include <sys/tprintf.h>
+#  endif
+#  include <sys/tape.h>
+# else
+#  if HAVE_SYS_MTIO_H
+#   include <sys/ioctl.h>
+#   if HAVE_SGTTY_H
+#    include <sgtty.h>
+#   endif
+#   if HAVE_SYS_IO_TRIOCTL_H
+#    include <sys/io/trioctl.h>
+#   endif
+#   include <sys/mtio.h>
+#  endif
+# endif
+#endif
+
+/* Declare standard functions.  */
+
+#if STDC_HEADERS
+# include <stdlib.h>
+#else
+voidstar malloc ();
+voidstar realloc ();
+# if HAVE_GETCWD
+char *getcwd ();
+# endif
+char *getenv ();
+#endif
+
+#include <stdio.h>
+
+#ifndef _POSIX_VERSION
+# if MSDOS
+#  include <io.h>
+# else
+off_t lseek ();
+# endif
+#endif
+
+#include <pathmax.h>
+
+#if WITH_DMALLOC
+# undef HAVE_VALLOC
+# define DMALLOC_FUNC_CHECK
+# include <dmalloc.h>
+#endif
+
+/* Prototypes for external functions.  */
+
+#ifndef PARAMS
+# if PROTOTYPES
+#  define PARAMS(Args) Args
+# else
+#  define PARAMS(Args) ()
+# endif
+#endif
+
+#if HAVE_LOCALE_H
+# include <locale.h>
+#endif
+#if !HAVE_SETLOCALE
+# define setlocale(Category, Locale)
+#endif
+
+#if ENABLE_NLS
+# include <libintl.h>
+# define _(Text) gettext (Text)
+#else
+# define bindtextdomain(Domain, Directory)
+# define textdomain(Domain)
+# define _(Text) Text
+#endif
+#define N_(Text) Text
+
+/* Library modules.  */
+
+#include "error.h"
+
+#if !HAVE_STRSTR
+char *strstr PARAMS ((const char *, const char *));
+#endif
+
+#if HAVE_VALLOC
+# ifndef valloc
+voidstar valloc PARAMS ((size_t));
+# endif
+#else
+# define valloc(Size) malloc (Size)
+#endif
+
+voidstar xmalloc PARAMS ((size_t));
+voidstar xrealloc PARAMS ((voidstar, size_t));
+char *xstrdup PARAMS ((const char *));