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freebsd-dev/contrib/cpio/lib/system.h

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Import GNU cpio 2.6 (trimmed)
2005-10-01 04:37:08 +00:00
/* System dependent definitions for GNU tar.
Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003,
2004 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
#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
/* MS-DOG forever, with my love! */
#ifndef O_BINARY
# define O_BINARY 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. */
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#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>
# 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
/* 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_PARAM_H
# include <sys/param.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
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
# undef HAVE_DECL_VALLOC
# define DMALLOC_FUNC_CHECK
# include <dmalloc.h>
#endif
#include <limits.h>
#ifndef MB_LEN_MAX
# define MB_LEN_MAX 1
#endif
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
/* These macros work even on ones'-complement hosts (!).
The extra casts work around common compiler bugs. */
#define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
#define TYPE_MINIMUM(t) (TYPE_SIGNED (t) \
? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
: (t) 0)
#define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
/* Bound on length of the string representing an integer value of type t.
Subtract one for the sign bit if t is signed;
302 / 1000 is log10 (2) rounded up;
add one for integer division truncation;
add one more for a minus sign if t is signed. */
#define INT_STRLEN_BOUND(t) \
((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 \
+ 1 + TYPE_SIGNED (t))
#define UINTMAX_STRSIZE_BOUND (INT_STRLEN_BOUND (uintmax_t) + 1)
/* Prototypes for external functions. */
#if HAVE_LOCALE_H
# include <locale.h>
#endif
#if !HAVE_SETLOCALE
# define setlocale(category, locale) /* empty */
#endif
#include <time.h>
#if defined(HAVE_SYS_TIME_H) && defined(TIME_WITH_SYS_TIME)
# include <sys/time.h>
#endif
#if ! HAVE_DECL_TIME
time_t time ();
#endif
#ifdef HAVE_UTIME_H
# include <utime.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
#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
# include <pwd.h>
# include <grp.h>
# define SET_BINARY_MODE(arc)
# define ERRNO_IS_EACCES 0
# define TTY_NAME "/dev/tty"
# define sys_reset_uid_gid() \
do { setuid (getuid ()); setgid (getgid ()); } while (0)
#endif
#if XENIX
# include <sys/inode.h>
#endif
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