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system.h
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1996-09-28
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455 lines
/* System dependent definitions for GNU tar.
Copyright (C) 1994 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.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
/* Declare alloca. AIX requires this to be the first thing in the file. */
#ifdef __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. */
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#else
# include <sys/file.h>
#endif
#ifndef O_BINARY
# define O_BINARY 0
#endif
#ifndef O_CREAT
# define O_CREAT 0
#endif
#ifndef O_NDELAY
# define O_NDELAY 0
#endif
#ifndef O_RDONLY
# define O_RDONLY 0
#endif
#ifndef O_RDWR
# define O_RDWR 2
#endif
/* Declare file status routines and bits. */
#include <sys/stat.h>
#ifdef 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>. */
#ifdef __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
#ifndef 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. */
#ifdef 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. */
#ifdef MAJOR_IN_MKDEV
# include <sys/mkdev.h>
# define GOT_MAJOR
#endif
#ifdef 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
# ifdef __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. */
#ifdef __MSDOS__
# include "msd_dir.h"
# define NAMLEN(dirent) ((dirent)->d_namlen)
#else
# ifdef HAVE_DIRENT_H
# include <dirent.h>
# define NAMLEN(dirent) (strlen((dirent)->d_name))
# else
# define dirent direct
# define NAMLEN(dirent) ((dirent)->d_namlen)
# ifdef HAVE_SYS_NDIR_H
# include <sys/ndir.h>
# endif
# ifdef HAVE_SYS_DIR_H
# include <sys/dir.h>
# endif
# ifdef HAVE_NDIR_H
# include <ndir.h>
# endif
# endif
#endif
/* Declare wait status. */
#ifdef HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
#ifdef 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
/* It is wrong to use RECORDSIZE 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. FIXME. */
/* 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. */
#ifndef 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. */
#ifndef 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
#if HAVE_SYS_GENTAPE_H /* e.g., for ISC */
# include <sys/gentape.h>
#else
# if HAVE_SYS_TAPE_H /* e.g., for SCO */
# include <sys/tape.h>
# else
# if HAVE_SYS_MTIO_H
# include <sys/ioctl.h>
# if HAVE_SYS_IO_TRIOCTL_H
# include <sys/io/trioctl.h>
# endif
# include <sys/mtio.h>
# endif
# endif
#endif
/* Declare standard functions. */
#ifdef STDC_HEADERS
# include <stdlib.h>
#else
voidstar malloc ();
voidstar realloc ();
# ifdef HAVE_GETCWD
char *getcwd ();
# endif
char *getenv ();
#endif
#include <stdio.h>
#ifndef _POSIX_VERSION
# ifdef __MSDOS__
# include <io.h>
# else
off_t lseek ();
# endif
#endif
#include <pathmax.h>
/* Until getoptold function is declared in getopt.h, we need this here for
struct option. */
#include <getopt.h>
#ifdef WITH_DMALLOC
# undef HAVE_VALLOC
# define DMALLOC_FUNC_CHECK
# include <dmalloc.h>
#endif
/* Prototypes for external functions. */
#ifndef __P
# if PROTOTYPES
# define __P(Args) Args
# else
# define __P(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 textdomain(Domain)
# define _(Text) Text
#endif
/* Library modules. */
#ifdef HAVE_VPRINTF
void error __P ((int, int, const char *, ...));
#else
void error ();
#endif
#ifndef HAVE_STRSTR
char *strstr __P ((const char *, const char *));
#endif
#ifndef HAVE_VALLOC
# define valloc(Size) malloc (Size)
#endif
voidstar xmalloc __P ((size_t));
voidstar xrealloc __P ((voidstar, size_t));
char *xstrdup __P ((const char *));