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a334319f | 1 | /* Copyright (C) 1991,1992,1994-2001,2003,2004 Free Software Foundation, Inc. |
54d79e99 | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
54d79e99 | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
28f540f4 | 8 | |
54d79e99 UD |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 AJ |
14 | You should have received a copy of the GNU Lesser General Public |
15 | License along with the GNU C Library; if not, write to the Free | |
16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
17 | 02111-1307 USA. */ | |
28f540f4 RM |
18 | |
19 | /* | |
20 | * POSIX Standard: 6.5 File Control Operations <fcntl.h> | |
21 | */ | |
22 | ||
23 | #ifndef _FCNTL_H | |
28f540f4 | 24 | #define _FCNTL_H 1 |
5107cf1d | 25 | |
28f540f4 RM |
26 | #include <features.h> |
27 | ||
5107cf1d | 28 | /* This must be early so <bits/fcntl.h> can define types winningly. */ |
28f540f4 RM |
29 | __BEGIN_DECLS |
30 | ||
31 | /* Get the definitions of O_*, F_*, FD_*: all the | |
32 | numbers and flag bits for `open', `fcntl', et al. */ | |
5107cf1d | 33 | #include <bits/fcntl.h> |
28f540f4 | 34 | |
6077fe6e UD |
35 | /* For XPG all symbols from <sys/stat.h> should also be available. */ |
36 | #ifdef __USE_XOPEN | |
9756dfe1 UD |
37 | # include <sys/stat.h> |
38 | #endif | |
39 | ||
28f540f4 | 40 | #ifdef __USE_MISC |
dfd2257a | 41 | # ifndef R_OK /* Verbatim from <unistd.h>. Ugh. */ |
28f540f4 RM |
42 | /* Values for the second argument to access. |
43 | These may be OR'd together. */ | |
dfd2257a UD |
44 | # define R_OK 4 /* Test for read permission. */ |
45 | # define W_OK 2 /* Test for write permission. */ | |
46 | # define X_OK 1 /* Test for execute permission. */ | |
47 | # define F_OK 0 /* Test for existence. */ | |
48 | # endif | |
28f540f4 RM |
49 | #endif /* Use misc. */ |
50 | ||
4bae5567 UD |
51 | /* XPG wants the following symbols. */ |
52 | #ifdef __USE_XOPEN /* <stdio.h> has the same definitions. */ | |
53 | # define SEEK_SET 0 /* Seek from beginning of file. */ | |
54 | # define SEEK_CUR 1 /* Seek from current position. */ | |
55 | # define SEEK_END 2 /* Seek from end of file. */ | |
56 | #endif /* XPG */ | |
57 | ||
28f540f4 | 58 | /* Do the file control operation described by CMD on FD. |
2c008571 UD |
59 | The remaining arguments are interpreted depending on CMD. |
60 | ||
61 | This function is a cancellation point and therefore not marked with | |
62 | __THROW. */ | |
63 | extern int fcntl (int __fd, int __cmd, ...); | |
28f540f4 RM |
64 | |
65 | /* Open FILE and return a new file descriptor for it, or -1 on error. | |
66 | OFLAG determines the type of access used. If O_CREAT is on OFLAG, | |
2c008571 UD |
67 | the third argument is taken as a `mode_t', the mode of the created file. |
68 | ||
69 | This function is a cancellation point and therefore not marked with | |
70 | __THROW. */ | |
dfd2257a | 71 | #ifndef __USE_FILE_OFFSET64 |
8a1f658b | 72 | extern int open (__const char *__file, int __oflag, ...) __nonnull ((1)); |
dfd2257a | 73 | #else |
918b9d72 | 74 | # ifdef __REDIRECT |
8a1f658b UD |
75 | extern int __REDIRECT (open, (__const char *__file, int __oflag, ...), open64) |
76 | __nonnull ((1)); | |
918b9d72 UD |
77 | # else |
78 | # define open open64 | |
79 | # endif | |
dfd2257a UD |
80 | #endif |
81 | #ifdef __USE_LARGEFILE64 | |
8a1f658b | 82 | extern int open64 (__const char *__file, int __oflag, ...) __nonnull ((1)); |
dfd2257a | 83 | #endif |
28f540f4 | 84 | |
2c008571 UD |
85 | /* Create and open FILE, with mode MODE. This takes an `int' MODE |
86 | argument because that is what `mode_t' will be widened to. | |
87 | ||
88 | This function is a cancellation point and therefore not marked with | |
89 | __THROW. */ | |
dfd2257a | 90 | #ifndef __USE_FILE_OFFSET64 |
8a1f658b | 91 | extern int creat (__const char *__file, __mode_t __mode) __nonnull ((1)); |
dfd2257a | 92 | #else |
918b9d72 | 93 | # ifdef __REDIRECT |
2c008571 | 94 | extern int __REDIRECT (creat, (__const char *__file, __mode_t __mode), |
8a1f658b | 95 | creat64) __nonnull ((1)); |
918b9d72 UD |
96 | # else |
97 | # define creat creat64 | |
98 | # endif | |
dfd2257a UD |
99 | #endif |
100 | #ifdef __USE_LARGEFILE64 | |
8a1f658b | 101 | extern int creat64 (__const char *__file, __mode_t __mode) __nonnull ((1)); |
dfd2257a | 102 | #endif |
28f540f4 | 103 | |
9756dfe1 UD |
104 | #if !defined F_LOCK && (defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \ |
105 | && !defined __USE_POSIX)) | |
28f540f4 RM |
106 | /* NOTE: These declarations also appear in <unistd.h>; be sure to keep both |
107 | files consistent. Some systems have them there and some here, and some | |
108 | software depends on the macros being defined without including both. */ | |
109 | ||
110 | /* `lockf' is a simpler interface to the locking facilities of `fcntl'. | |
111 | LEN is always relative to the current file position. | |
112 | The CMD argument is one of the following. */ | |
113 | ||
dfd2257a UD |
114 | # define F_ULOCK 0 /* Unlock a previously locked region. */ |
115 | # define F_LOCK 1 /* Lock a region for exclusive use. */ | |
116 | # define F_TLOCK 2 /* Test and lock a region for exclusive use. */ | |
117 | # define F_TEST 3 /* Test a region for other processes locks. */ | |
28f540f4 | 118 | |
dfd2257a | 119 | # ifndef __USE_FILE_OFFSET64 |
8dab36a1 | 120 | extern int lockf (int __fd, int __cmd, __off_t __len); |
dfd2257a | 121 | # else |
918b9d72 | 122 | # ifdef __REDIRECT |
8dab36a1 | 123 | extern int __REDIRECT (lockf, (int __fd, int __cmd, __off64_t __len), lockf64); |
918b9d72 UD |
124 | # else |
125 | # define lockf lockf64 | |
126 | # endif | |
dfd2257a UD |
127 | # endif |
128 | # ifdef __USE_LARGEFILE64 | |
8dab36a1 | 129 | extern int lockf64 (int __fd, int __cmd, __off64_t __len); |
dfd2257a | 130 | # endif |
28f540f4 RM |
131 | #endif |
132 | ||
bb8e0116 UD |
133 | #ifdef __USE_XOPEN2K |
134 | /* Advice the system about the expected behaviour of the application with | |
135 | respect to the file associated with FD. */ | |
136 | # ifndef __USE_FILE_OFFSET64 | |
f38afd78 | 137 | extern int posix_fadvise (int __fd, __off_t __offset, __off_t __len, |
bb8e0116 UD |
138 | int __advise) __THROW; |
139 | # else | |
f377d022 UD |
140 | # ifdef __REDIRECT_NTH |
141 | extern int __REDIRECT_NTH (posix_fadvise, (int __fd, __off64_t __offset, | |
142 | __off64_t __len, int __advise), | |
143 | posix_fadvise64); | |
bb8e0116 UD |
144 | # else |
145 | # define posix_fadvise posix_fadvise64 | |
146 | # endif | |
147 | # endif | |
148 | # ifdef __USE_LARGEFILE64 | |
f38afd78 | 149 | extern int posix_fadvise64 (int __fd, __off64_t __offset, __off64_t __len, |
bb8e0116 UD |
150 | int __advise) __THROW; |
151 | # endif | |
152 | ||
153 | ||
73299943 UD |
154 | /* Reserve storage for the data of the file associated with FD. |
155 | ||
156 | This function is a possible cancellation points and therefore not | |
157 | marked with __THROW. */ | |
bb8e0116 | 158 | # ifndef __USE_FILE_OFFSET64 |
089d05d5 | 159 | extern int posix_fallocate (int __fd, __off_t __offset, __off_t __len); |
bb8e0116 UD |
160 | # else |
161 | # ifdef __REDIRECT | |
162 | extern int __REDIRECT (posix_fallocate, (int __fd, __off64_t __offset, | |
089d05d5 | 163 | __off64_t __len), |
bb8e0116 UD |
164 | posix_fallocate64); |
165 | # else | |
166 | # define posix_fallocate posix_fallocate64 | |
167 | # endif | |
168 | # endif | |
169 | # ifdef __USE_LARGEFILE64 | |
089d05d5 | 170 | extern int posix_fallocate64 (int __fd, __off64_t __offset, __off64_t __len); |
bb8e0116 UD |
171 | # endif |
172 | #endif | |
173 | ||
28f540f4 RM |
174 | __END_DECLS |
175 | ||
176 | #endif /* fcntl.h */ |