| 1 | /* System dependent definitions for GNU tar.
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| 2 |
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| 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003,
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| 4 | 2004, 2005, 2006 Free Software Foundation, Inc.
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| 5 |
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| 6 | This program is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | This program is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with this program; if not, write to the Free Software Foundation,
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| 18 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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| 19 |
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| 20 | #if HAVE_CONFIG_H
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| 21 | # include <config.h>
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| 22 | #endif
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| 23 |
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| 24 | #include <alloca.h>
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| 25 |
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| 26 | #ifndef __attribute__
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| 27 | /* This feature is available in gcc versions 2.5 and later. */
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| 28 | # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
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| 29 | # define __attribute__(spec) /* empty */
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| 30 | # endif
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| 31 | #endif
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| 32 |
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| 33 | #include <sys/types.h>
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| 34 | #include <ctype.h>
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| 35 |
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| 36 | /* IN_CTYPE_DOMAIN (C) is nonzero if the unsigned char C can safely be given
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| 37 | as an argument to <ctype.h> macros like `isspace'. */
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| 38 | #if STDC_HEADERS
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| 39 | # define IN_CTYPE_DOMAIN(c) 1
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| 40 | #else
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| 41 | # define IN_CTYPE_DOMAIN(c) ((unsigned) (c) <= 0177)
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| 42 | #endif
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| 43 |
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| 44 | #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
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| 45 | #define ISODIGIT(c) ((unsigned) (c) - '0' <= 7)
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| 46 | #define ISPRINT(c) (IN_CTYPE_DOMAIN (c) && isprint (c))
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| 47 | #define ISSPACE(c) (IN_CTYPE_DOMAIN (c) && isspace (c))
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| 48 |
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| 49 | /* Declare string and memory handling routines. Take care that an ANSI
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| 50 | string.h and pre-ANSI memory.h might conflict, and that memory.h and
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| 51 | strings.h conflict on some systems. */
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| 52 |
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| 53 | #if STDC_HEADERS || HAVE_STRING_H
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| 54 | # include <string.h>
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| 55 | # if !STDC_HEADERS && HAVE_MEMORY_H
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| 56 | # include <memory.h>
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| 57 | # endif
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| 58 | #else
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| 59 | # include <strings.h>
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| 60 | # ifndef strchr
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| 61 | # define strchr index
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| 62 | # endif
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| 63 | # ifndef strrchr
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| 64 | # define strrchr rindex
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| 65 | # endif
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| 66 | # ifndef memcpy
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| 67 | # define memcpy(d, s, n) bcopy ((char const *) (s), (char *) (d), n)
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| 68 | # endif
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| 69 | # ifndef memcmp
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| 70 | # define memcmp(a, b, n) bcmp ((char const *) (a), (char const *) (b), n)
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| 71 | # endif
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| 72 | #endif
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| 73 |
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| 74 | /* Declare errno. */
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| 75 |
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| 76 | #include <errno.h>
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| 77 | #ifndef errno
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| 78 | extern int errno;
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| 79 | #endif
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| 80 |
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| 81 | /* Declare open parameters. */
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| 82 |
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| 83 | #if HAVE_FCNTL_H
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| 84 | # include <fcntl.h>
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| 85 | #else
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| 86 | # include <sys/file.h>
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| 87 | #endif
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| 88 | /* Pick only one of the next three: */
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| 89 | #ifndef O_RDONLY
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| 90 | # define O_RDONLY 0 /* only allow read */
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| 91 | #endif
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| 92 | #ifndef O_WRONLY
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| 93 | # define O_WRONLY 1 /* only allow write */
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| 94 | #endif
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| 95 | #ifndef O_RDWR
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| 96 | # define O_RDWR 2 /* both are allowed */
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| 97 | #endif
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| 98 | #ifndef O_ACCMODE
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| 99 | # define O_ACCMODE (O_RDONLY | O_RDWR | O_WRONLY)
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| 100 | #endif
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| 101 | /* The rest can be OR-ed in to the above: */
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| 102 | #ifndef O_CREAT
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| 103 | # define O_CREAT 8 /* create file if needed */
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| 104 | #endif
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| 105 | #ifndef O_EXCL
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| 106 | # define O_EXCL 16 /* file cannot already exist */
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| 107 | #endif
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| 108 | #ifndef O_TRUNC
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| 109 | # define O_TRUNC 32 /* truncate file on open */
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| 110 | #endif
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| 111 |
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| 112 | #ifndef O_BINARY
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| 113 | # define O_BINARY 0
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| 114 | #endif
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| 115 | #ifndef O_DIRECTORY
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| 116 | # define O_DIRECTORY 0
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| 117 | #endif
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| 118 | #ifndef O_NOATIME
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| 119 | # define O_NOATIME 0
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| 120 | #endif
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| 121 | #ifndef O_NONBLOCK
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| 122 | # define O_NONBLOCK 0
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| 123 | #endif
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| 124 |
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| 125 | /* Declare file status routines and bits. */
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| 126 |
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| 127 | #include <sys/stat.h>
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| 128 |
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| 129 | #if !HAVE_LSTAT && !defined lstat
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| 130 | # define lstat stat
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| 131 | #endif
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| 132 |
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| 133 | #if STX_HIDDEN && !_LARGE_FILES /* AIX */
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| 134 | # ifdef stat
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| 135 | # undef stat
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| 136 | # endif
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| 137 | # define stat(file_name, buf) statx (file_name, buf, STATSIZE, STX_HIDDEN)
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| 138 | # ifdef lstat
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| 139 | # undef lstat
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| 140 | # endif
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| 141 | # define lstat(file_name, buf) statx (file_name, buf, STATSIZE, STX_HIDDEN | STX_LINK)
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| 142 | #endif
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| 143 |
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| 144 | #if STAT_MACROS_BROKEN
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| 145 | # undef S_ISBLK
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| 146 | # undef S_ISCHR
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| 147 | # undef S_ISCTG
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| 148 | # undef S_ISDIR
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| 149 | # undef S_ISFIFO
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| 150 | # undef S_ISLNK
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| 151 | # undef S_ISREG
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| 152 | # undef S_ISSOCK
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| 153 | #endif
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| 154 |
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| 155 | /* On MSDOS, there are missing things from <sys/stat.h>. */
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| 156 | #if MSDOS
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| 157 | # define S_ISUID 0
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| 158 | # define S_ISGID 0
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| 159 | # define S_ISVTX 0
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| 160 | #endif
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| 161 |
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| 162 | #ifndef S_ISDIR
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| 163 | # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
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| 164 | #endif
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| 165 | #ifndef S_ISREG
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| 166 | # define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
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| 167 | #endif
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| 168 |
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| 169 | #ifndef S_ISBLK
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| 170 | # ifdef S_IFBLK
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| 171 | # define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
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| 172 | # else
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| 173 | # define S_ISBLK(mode) 0
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| 174 | # endif
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| 175 | #endif
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| 176 | #ifndef S_ISCHR
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| 177 | # ifdef S_IFCHR
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| 178 | # define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
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| 179 | # else
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| 180 | # define S_ISCHR(mode) 0
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| 181 | # endif
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| 182 | #endif
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| 183 | #ifndef S_ISCTG
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| 184 | # ifdef S_IFCTG
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| 185 | # define S_ISCTG(mode) (((mode) & S_IFMT) == S_IFCTG)
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| 186 | # else
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| 187 | # define S_ISCTG(mode) 0
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| 188 | # endif
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| 189 | #endif
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| 190 | #ifndef S_ISDOOR
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| 191 | # define S_ISDOOR(mode) 0
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| 192 | #endif
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| 193 | #ifndef S_ISFIFO
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| 194 | # ifdef S_IFIFO
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| 195 | # define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
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| 196 | # else
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| 197 | # define S_ISFIFO(mode) 0
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| 198 | # endif
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| 199 | #endif
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| 200 | #ifndef S_ISLNK
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| 201 | # ifdef S_IFLNK
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| 202 | # define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
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| 203 | # else
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| 204 | # define S_ISLNK(mode) 0
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| 205 | # endif
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| 206 | #endif
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| 207 | #ifndef S_ISSOCK
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| 208 | # ifdef S_IFSOCK
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| 209 | # define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
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| 210 | # else
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| 211 | # define S_ISSOCK(mode) 0
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| 212 | # endif
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| 213 | #endif
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| 214 |
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| 215 | #if !HAVE_MKFIFO && !defined mkfifo && defined S_IFIFO
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| 216 | # define mkfifo(file_name, mode) (mknod (file_name, (mode) | S_IFIFO, 0))
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| 217 | #endif
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| 218 |
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| 219 | #ifndef S_ISUID
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| 220 | # define S_ISUID 0004000
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| 221 | #endif
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| 222 | #ifndef S_ISGID
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| 223 | # define S_ISGID 0002000
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| 224 | #endif
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| 225 | #ifndef S_ISVTX
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| 226 | # define S_ISVTX 0001000
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| 227 | #endif
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| 228 | #ifndef S_IRUSR
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| 229 | # define S_IRUSR 0000400
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| 230 | #endif
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| 231 | #ifndef S_IWUSR
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| 232 | # define S_IWUSR 0000200
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| 233 | #endif
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| 234 | #ifndef S_IXUSR
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| 235 | # define S_IXUSR 0000100
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| 236 | #endif
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| 237 | #ifndef S_IRGRP
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| 238 | # define S_IRGRP 0000040
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| 239 | #endif
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| 240 | #ifndef S_IWGRP
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| 241 | # define S_IWGRP 0000020
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| 242 | #endif
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| 243 | #ifndef S_IXGRP
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| 244 | # define S_IXGRP 0000010
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| 245 | #endif
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| 246 | #ifndef S_IROTH
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| 247 | # define S_IROTH 0000004
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| 248 | #endif
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| 249 | #ifndef S_IWOTH
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| 250 | # define S_IWOTH 0000002
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| 251 | #endif
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| 252 | #ifndef S_IXOTH
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| 253 | # define S_IXOTH 0000001
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| 254 | #endif
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| 255 |
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| 256 | #define MODE_WXUSR (S_IWUSR | S_IXUSR)
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| 257 | #define MODE_R (S_IRUSR | S_IRGRP | S_IROTH)
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| 258 | #define MODE_RW (S_IWUSR | S_IWGRP | S_IWOTH | MODE_R)
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| 259 | #define MODE_RWX (S_IXUSR | S_IXGRP | S_IXOTH | MODE_RW)
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| 260 | #define MODE_ALL (S_ISUID | S_ISGID | S_ISVTX | MODE_RWX)
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| 261 |
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| 262 | /* Include <unistd.h> before any preprocessor test of _POSIX_VERSION. */
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| 263 | #include <unistd.h>
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| 264 |
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| 265 | #ifndef SEEK_SET
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| 266 | # define SEEK_SET 0
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| 267 | #endif
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| 268 | #ifndef SEEK_CUR
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| 269 | # define SEEK_CUR 1
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| 270 | #endif
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| 271 | #ifndef SEEK_END
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| 272 | # define SEEK_END 2
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| 273 | #endif
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| 274 |
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| 275 | #ifndef STDIN_FILENO
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| 276 | # define STDIN_FILENO 0
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| 277 | #endif
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| 278 | #ifndef STDOUT_FILENO
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| 279 | # define STDOUT_FILENO 1
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| 280 | #endif
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| 281 | #ifndef STDERR_FILENO
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| 282 | # define STDERR_FILENO 2
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| 283 | #endif
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| 284 |
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| 285 | /* Declare make device, major and minor. Since major is a function on
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| 286 | SVR4, we have to resort to GOT_MAJOR instead of just testing if
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| 287 | major is #define'd. */
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| 288 |
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| 289 | #if MAJOR_IN_MKDEV
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| 290 | # include <sys/mkdev.h>
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| 291 | # if !defined(makedev) && defined(mkdev)
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| 292 | # define makedev(a,b) mkdev((a),(b))
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| 293 | # endif
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| 294 | # define GOT_MAJOR
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| 295 | #endif
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| 296 |
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| 297 | #if MAJOR_IN_SYSMACROS
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| 298 | # include <sys/sysmacros.h>
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| 299 | # define GOT_MAJOR
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| 300 | #endif
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| 301 |
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| 302 | /* Some <sys/types.h> defines the macros. */
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| 303 | #ifdef major
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| 304 | # define GOT_MAJOR
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| 305 | #endif
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| 306 |
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| 307 | #ifndef GOT_MAJOR
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| 308 | # if MSDOS
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| 309 | # define major(device) (device)
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| 310 | # define minor(device) (device)
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| 311 | # define makedev(major, minor) (((major) << 8) | (minor))
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| 312 | # define GOT_MAJOR
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| 313 | # endif
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| 314 | #endif
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| 315 |
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| 316 | /* For HP-UX before HP-UX 8, major/minor are not in <sys/sysmacros.h>. */
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| 317 | #ifndef GOT_MAJOR
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| 318 | # if defined(hpux) || defined(__hpux__) || defined(__hpux)
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| 319 | # include <sys/mknod.h>
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| 320 | # define GOT_MAJOR
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| 321 | # endif
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| 322 | #endif
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| 323 |
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| 324 | #ifndef GOT_MAJOR
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| 325 | # define major(device) (((device) >> 8) & 0xff)
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| 326 | # define minor(device) ((device) & 0xff)
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| 327 | # define makedev(major, minor) (((major) << 8) | (minor))
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| 328 | #endif
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| 329 |
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| 330 | #undef GOT_MAJOR
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| 331 |
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| 332 | /* Declare wait status. */
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| 333 |
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| 334 | #if HAVE_SYS_WAIT_H
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| 335 | # include <sys/wait.h>
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| 336 | #endif
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| 337 | #ifndef WEXITSTATUS
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| 338 | # define WEXITSTATUS(s) (((s) >> 8) & 0xff)
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| 339 | #endif
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| 340 | #ifndef WIFSIGNALED
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| 341 | # define WIFSIGNALED(s) (((s) & 0xffff) - 1 < (unsigned) 0xff)
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| 342 | #endif
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| 343 | #ifndef WTERMSIG
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| 344 | # define WTERMSIG(s) ((s) & 0x7f)
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| 345 | #endif
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| 346 |
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| 347 | /* FIXME: It is wrong to use BLOCKSIZE for buffers when the logical block
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| 348 | size is greater than 512 bytes; so ST_BLKSIZE code below, in preparation
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| 349 | for some cleanup in this area, later. */
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| 350 |
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| 351 | /* Extract or fake data from a `struct stat'. ST_BLKSIZE gives the
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| 352 | optimal I/O blocksize for the file, in bytes. Some systems, like
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| 353 | Sequents, return st_blksize of 0 on pipes. */
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| 354 |
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| 355 | #define DEFAULT_ST_BLKSIZE 512
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| 356 |
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| 357 | #if !HAVE_ST_BLKSIZE
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| 358 | # define ST_BLKSIZE(statbuf) DEFAULT_ST_BLKSIZE
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| 359 | #else
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| 360 | # define ST_BLKSIZE(statbuf) \
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| 361 | ((statbuf).st_blksize > 0 ? (statbuf).st_blksize : DEFAULT_ST_BLKSIZE)
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| 362 | #endif
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| 363 |
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| 364 | /* Extract or fake data from a `struct stat'. ST_NBLOCKS gives the
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| 365 | number of ST_NBLOCKSIZE-byte blocks in the file (including indirect blocks).
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| 366 | HP-UX counts st_blocks in 1024-byte units,
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| 367 | this loses when mixing HP-UX and BSD filesystems with NFS. AIX PS/2
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| 368 | counts st_blocks in 4K units. */
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| 369 |
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| 370 | #if !HAVE_ST_BLOCKS
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| 371 | # if defined(_POSIX_SOURCE) || !defined(BSIZE)
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| 372 | # define ST_NBLOCKS(statbuf) ((statbuf).st_size / ST_NBLOCKSIZE + ((statbuf).st_size % ST_NBLOCKSIZE != 0))
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| 373 | # else
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| 374 | off_t st_blocks ();
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| 375 | # define ST_NBLOCKS(statbuf) (st_blocks ((statbuf).st_size))
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| 376 | # endif
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| 377 | #else
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| 378 | # define ST_NBLOCKS(statbuf) ((statbuf).st_blocks)
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| 379 | # if defined(hpux) || defined(__hpux__) || defined(__hpux)
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| 380 | # define ST_NBLOCKSIZE 1024
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| 381 | # else
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| 382 | # if defined(_AIX) && defined(_I386)
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| 383 | # define ST_NBLOCKSIZE (4 * 1024)
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| 384 | # endif
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| 385 | # endif
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| 386 | #endif
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| 387 |
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| 388 | #ifndef ST_NBLOCKSIZE
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| 389 | # define ST_NBLOCKSIZE 512
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| 390 | #endif
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| 391 |
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| 392 | #define ST_IS_SPARSE(st) \
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| 393 | (ST_NBLOCKS (st) \
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| 394 | < ((st).st_size / ST_NBLOCKSIZE + ((st).st_size % ST_NBLOCKSIZE != 0)))
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| 395 |
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| 396 | /* Declare standard functions. */
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| 397 |
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| 398 | #if STDC_HEADERS
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| 399 | # include <stdlib.h>
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| 400 | #else
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| 401 | void *malloc ();
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| 402 | char *getenv ();
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| 403 | #endif
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| 404 |
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| 405 | #include <stdbool.h>
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| 406 | #include <stddef.h>
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| 407 |
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| 408 | #include <stdio.h>
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| 409 | #if !defined _POSIX_VERSION && MSDOS
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| 410 | # include <io.h>
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| 411 | #endif
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| 412 |
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| 413 | #if WITH_DMALLOC
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| 414 | # define DMALLOC_FUNC_CHECK
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| 415 | # include <dmalloc.h>
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| 416 | #endif
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| 417 |
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| 418 | #include <limits.h>
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| 419 |
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| 420 | #ifndef MB_LEN_MAX
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| 421 | # define MB_LEN_MAX 1
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| 422 | #endif
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| 423 |
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| 424 | #include <inttypes.h>
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| 425 |
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| 426 | #include <intprops.h>
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| 427 |
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| 428 | #define UINTMAX_STRSIZE_BOUND INT_BUFSIZE_BOUND (uintmax_t)
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| 429 | |
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| 430 |
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| 431 | /* Prototypes for external functions. */
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| 432 |
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| 433 | #if HAVE_LOCALE_H
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| 434 | # include <locale.h>
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| 435 | #endif
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| 436 | #if !HAVE_SETLOCALE
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| 437 | # define setlocale(category, locale) /* empty */
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| 438 | #endif
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| 439 |
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| 440 | #include <time.h>
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| 441 | #ifdef TIME_WITH_SYS_TIME
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| 442 | # include <sys/time.h>
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| 443 | #endif
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| 444 |
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| 445 | /* Library modules. */
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| 446 |
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| 447 | #include <dirname.h>
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| 448 | #include <error.h>
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| 449 | #include <savedir.h>
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| 450 | #include <unlocked-io.h>
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| 451 | #include <xalloc.h>
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| 452 |
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| 453 | #include <gettext.h>
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| 454 | #define _(msgid) gettext (msgid)
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| 455 | #define N_(msgid) msgid
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| 456 |
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| 457 | #if MSDOS
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| 458 | # include <process.h>
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| 459 | # define SET_BINARY_MODE(arc) setmode(arc, O_BINARY)
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| 460 | # define ERRNO_IS_EACCES errno == EACCES
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| 461 | # define mkdir(file, mode) (mkdir) (file)
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| 462 | # define TTY_NAME "con"
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| 463 | # define sys_reset_uid_gid()
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| 464 | #else
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| 465 | # include <pwd.h>
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| 466 | # include <grp.h>
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| 467 | # if defined __OS2__
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| 468 | # define SET_BINARY_MODE(arc) setmode(arc, O_BINARY)
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| 469 | # else
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| 470 | # define SET_BINARY_MODE(arc)
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| 471 | # endif
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| 472 | # define ERRNO_IS_EACCES 0
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| 473 | # define TTY_NAME "/dev/tty"
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| 474 | # define sys_reset_uid_gid() \
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| 475 | do { setuid (getuid ()); setgid (getgid ()); } while (0)
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| 476 | #endif
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| 477 |
|
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| 478 | #if XENIX
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| 479 | # include <sys/inode.h>
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| 480 | #endif
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