| 1 | /* Copyright (C) 1991,92,94,95,96,97,98,99,2000,2001 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, write to the Free |
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| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 17 | 02111-1307 USA. */ |
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| 18 | |
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| 19 | /* |
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| 20 | * POSIX Standard: 6.5 File Control Operations <fcntl.h> |
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| 21 | */ |
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| 22 | |
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| 23 | #ifndef _FCNTL_H |
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| 24 | #define _FCNTL_H 1 |
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| 25 | |
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| 26 | #include <features.h> |
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| 27 | |
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| 28 | /* This must be early so <bits/fcntl.h> can define types winningly. */ |
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| 29 | __BEGIN_DECLS |
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| 30 | |
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| 31 | /* Get the definitions of O_*, F_*, FD_*: all the |
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| 32 | numbers and flag bits for `open', `fcntl', et al. */ |
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| 33 | #include <bits/fcntl.h> |
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| 34 | |
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| 35 | /* For XPG all symbols from <sys/stat.h> should also be available. */ |
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| 36 | #ifdef __USE_XOPEN |
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| 37 | # include <sys/stat.h> |
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| 38 | #endif |
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| 39 | |
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| 40 | #ifdef __USE_MISC |
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| 41 | # ifndef R_OK /* Verbatim from <unistd.h>. Ugh. */ |
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| 42 | /* Values for the second argument to access. |
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| 43 | These may be OR'd together. */ |
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| 44 | # define R_OK 4 /* Test for read permission. */ |
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| 45 | # define W_OK 2 /* Test for write permission. */ |
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| 46 | # define X_OK 1 /* Test for execute permission. */ |
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| 47 | # define F_OK 0 /* Test for existence. */ |
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| 48 | # endif |
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| 49 | #endif /* Use misc. */ |
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| 50 | |
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| 51 | /* XPG wants the following symbols. */ |
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| 52 | #ifdef __USE_XOPEN /* <stdio.h> has the same definitions. */ |
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| 53 | # define SEEK_SET 0 /* Seek from beginning of file. */ |
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| 54 | # define SEEK_CUR 1 /* Seek from current position. */ |
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| 55 | # define SEEK_END 2 /* Seek from end of file. */ |
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| 56 | #endif /* XPG */ |
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| 57 | |
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| 58 | /* Do the file control operation described by CMD on FD. |
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| 59 | The remaining arguments are interpreted depending on CMD. */ |
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| 60 | #ifndef __USE_FILE_OFFSET64 |
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| 61 | extern int fcntl (int __fd, int __cmd, ...) __THROW; |
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| 62 | #else |
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| 63 | # ifdef __REDIRECT |
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| 64 | extern int __REDIRECT (fcntl, (int __fd, int __cmd, ...) __THROW, |
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| 65 | fcntl64); |
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| 66 | # else |
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| 67 | # define fcntl fcntl64 |
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| 68 | # endif |
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| 69 | #endif |
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| 70 | |
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| 71 | /* Open FILE and return a new file descriptor for it, or -1 on error. |
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| 72 | OFLAG determines the type of access used. If O_CREAT is on OFLAG, |
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| 73 | the third argument is taken as a `mode_t', the mode of the created file. */ |
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| 74 | #ifndef __USE_FILE_OFFSET64 |
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| 75 | extern int open (__const char *__file, int __oflag, ...) __THROW; |
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| 76 | #else |
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| 77 | # ifdef __REDIRECT |
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| 78 | extern int __REDIRECT (open, (__const char *__file, int __oflag, ...) __THROW, |
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| 79 | open64); |
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| 80 | # else |
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| 81 | # define open open64 |
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| 82 | # endif |
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| 83 | #endif |
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| 84 | #ifdef __USE_LARGEFILE64 |
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| 85 | extern int open64 (__const char *__file, int __oflag, ...) __THROW; |
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| 86 | #endif |
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| 87 | |
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| 88 | /* Create and open FILE, with mode MODE. |
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| 89 | This takes an `int' MODE argument because that is |
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| 90 | what `mode_t' will be widened to. */ |
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| 91 | #ifndef __USE_FILE_OFFSET64 |
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| 92 | extern int creat (__const char *__file, __mode_t __mode) __THROW; |
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| 93 | #else |
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| 94 | # ifdef __REDIRECT |
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| 95 | extern int __REDIRECT (creat, (__const char *__file, __mode_t __mode) __THROW, |
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| 96 | creat64); |
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| 97 | # else |
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| 98 | # define creat creat64 |
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| 99 | # endif |
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| 100 | #endif |
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| 101 | #ifdef __USE_LARGEFILE64 |
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| 102 | extern int creat64 (__const char *__file, __mode_t __mode) __THROW; |
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| 103 | #endif |
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| 104 | |
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| 105 | #if !defined F_LOCK && (defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \ |
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| 106 | && !defined __USE_POSIX)) |
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| 107 | /* NOTE: These declarations also appear in <unistd.h>; be sure to keep both |
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| 108 | files consistent. Some systems have them there and some here, and some |
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| 109 | software depends on the macros being defined without including both. */ |
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| 110 | |
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| 111 | /* `lockf' is a simpler interface to the locking facilities of `fcntl'. |
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| 112 | LEN is always relative to the current file position. |
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| 113 | The CMD argument is one of the following. */ |
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| 114 | |
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| 115 | # define F_ULOCK 0 /* Unlock a previously locked region. */ |
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| 116 | # define F_LOCK 1 /* Lock a region for exclusive use. */ |
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| 117 | # define F_TLOCK 2 /* Test and lock a region for exclusive use. */ |
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| 118 | # define F_TEST 3 /* Test a region for other processes locks. */ |
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| 119 | |
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| 120 | # ifndef __USE_FILE_OFFSET64 |
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| 121 | extern int lockf (int __fd, int __cmd, __off_t __len) __THROW; |
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| 122 | # else |
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| 123 | # ifdef __REDIRECT |
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| 124 | extern int __REDIRECT (lockf, (int __fd, int __cmd, __off64_t __len) __THROW, |
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| 125 | lockf64); |
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| 126 | # else |
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| 127 | # define lockf lockf64 |
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| 128 | # endif |
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| 129 | # endif |
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| 130 | # ifdef __USE_LARGEFILE64 |
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| 131 | extern int lockf64 (int __fd, int __cmd, __off64_t __len) __THROW; |
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| 132 | # endif |
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| 133 | #endif |
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| 134 | |
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| 135 | |
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| 136 | #if 0 |
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| 137 | |
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| 138 | /* FIXME -- uClibc should probably implement these... */ |
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| 139 | |
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| 140 | #ifdef __USE_XOPEN2K |
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| 141 | /* Advice the system about the expected behaviour of the application with |
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| 142 | respect to the file associated with FD. */ |
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| 143 | # ifndef __USE_FILE_OFFSET64 |
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| 144 | extern int posix_fadvise (int __fd, __off_t __offset, size_t __len, |
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| 145 | int __advise) __THROW; |
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| 146 | # else |
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| 147 | # ifdef __REDIRECT |
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| 148 | extern int __REDIRECT (posix_fadvise, (int __fd, __off64_t __offset, |
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| 149 | size_t __len, int __advise) __THROW, |
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| 150 | posix_fadvise64); |
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| 151 | # else |
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| 152 | # define posix_fadvise posix_fadvise64 |
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| 153 | # endif |
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| 154 | # endif |
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| 155 | # ifdef __USE_LARGEFILE64 |
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| 156 | extern int posix_fadvise64 (int __fd, __off64_t __offset, size_t __len, |
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| 157 | int __advise) __THROW; |
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| 158 | # endif |
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| 159 | |
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| 160 | |
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| 161 | /* Reserve storage for the data of the file associated with FD. */ |
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| 162 | # ifndef __USE_FILE_OFFSET64 |
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| 163 | extern int posix_fallocate (int __fd, __off_t __offset, size_t __len) __THROW; |
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| 164 | # else |
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| 165 | # ifdef __REDIRECT |
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| 166 | extern int __REDIRECT (posix_fallocate, (int __fd, __off64_t __offset, |
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| 167 | size_t __len) __THROW, |
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| 168 | posix_fallocate64); |
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| 169 | # else |
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| 170 | # define posix_fallocate posix_fallocate64 |
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| 171 | # endif |
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| 172 | # endif |
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| 173 | # ifdef __USE_LARGEFILE64 |
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| 174 | extern int posix_fallocate64 (int __fd, __off64_t __offset, size_t __len) |
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| 175 | __THROW; |
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| 176 | # endif |
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| 177 | #endif |
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| 178 | #endif |
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| 179 | |
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| 180 | __END_DECLS |
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| 181 | |
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| 182 | #endif /* fcntl.h */ |
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