Commit | Line | Data |
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6ec2e0f5 | 1 | /* provide a replacement openat function |
5df4cba6 | 2 | Copyright (C) 2004-2006, 2008-2020 Free Software Foundation, Inc. |
6ec2e0f5 SDJ |
3 | |
4 | This program is free software: you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 3 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program 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 | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
c0c3707f | 15 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
6ec2e0f5 SDJ |
16 | |
17 | /* written by Jim Meyering */ | |
18 | ||
19 | #ifndef _GL_HEADER_OPENAT | |
20 | #define _GL_HEADER_OPENAT | |
21 | ||
22 | #include <fcntl.h> | |
23 | ||
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | #include <unistd.h> | |
27 | #include <stdbool.h> | |
28 | ||
29 | #ifndef _GL_INLINE_HEADER_BEGIN | |
30 | #error "Please include config.h first." | |
31 | #endif | |
32 | _GL_INLINE_HEADER_BEGIN | |
33 | ||
34 | #if !HAVE_OPENAT | |
35 | ||
36 | int openat_permissive (int fd, char const *file, int flags, mode_t mode, | |
37 | int *cwd_errno); | |
38 | bool openat_needs_fchdir (void); | |
39 | ||
40 | #else | |
41 | ||
42 | # define openat_permissive(Fd, File, Flags, Mode, Cwd_errno) \ | |
43 | openat (Fd, File, Flags, Mode) | |
44 | # define openat_needs_fchdir() false | |
45 | ||
46 | #endif | |
47 | ||
48 | _Noreturn void openat_restore_fail (int); | |
49 | _Noreturn void openat_save_fail (int); | |
50 | ||
51 | /* Using these function names makes application code | |
52 | slightly more readable than it would be with | |
53 | fchownat (..., 0) or fchownat (..., AT_SYMLINK_NOFOLLOW). */ | |
54 | ||
55 | #if GNULIB_FCHOWNAT | |
56 | ||
57 | # ifndef FCHOWNAT_INLINE | |
58 | # define FCHOWNAT_INLINE _GL_INLINE | |
59 | # endif | |
60 | ||
61 | FCHOWNAT_INLINE int | |
62 | chownat (int fd, char const *file, uid_t owner, gid_t group) | |
63 | { | |
64 | return fchownat (fd, file, owner, group, 0); | |
65 | } | |
66 | ||
67 | FCHOWNAT_INLINE int | |
68 | lchownat (int fd, char const *file, uid_t owner, gid_t group) | |
69 | { | |
70 | return fchownat (fd, file, owner, group, AT_SYMLINK_NOFOLLOW); | |
71 | } | |
72 | ||
73 | #endif | |
74 | ||
75 | #if GNULIB_FCHMODAT | |
76 | ||
77 | # ifndef FCHMODAT_INLINE | |
78 | # define FCHMODAT_INLINE _GL_INLINE | |
79 | # endif | |
80 | ||
81 | FCHMODAT_INLINE int | |
82 | chmodat (int fd, char const *file, mode_t mode) | |
83 | { | |
84 | return fchmodat (fd, file, mode, 0); | |
85 | } | |
86 | ||
87 | FCHMODAT_INLINE int | |
88 | lchmodat (int fd, char const *file, mode_t mode) | |
89 | { | |
90 | return fchmodat (fd, file, mode, AT_SYMLINK_NOFOLLOW); | |
91 | } | |
92 | ||
93 | #endif | |
94 | ||
95 | #if GNULIB_STATAT | |
96 | ||
97 | # ifndef STATAT_INLINE | |
98 | # define STATAT_INLINE _GL_INLINE | |
99 | # endif | |
100 | ||
101 | STATAT_INLINE int | |
102 | statat (int fd, char const *name, struct stat *st) | |
103 | { | |
104 | return fstatat (fd, name, st, 0); | |
105 | } | |
106 | ||
107 | STATAT_INLINE int | |
108 | lstatat (int fd, char const *name, struct stat *st) | |
109 | { | |
110 | return fstatat (fd, name, st, AT_SYMLINK_NOFOLLOW); | |
111 | } | |
112 | ||
113 | #endif | |
114 | ||
115 | /* For now, there are no wrappers named laccessat or leuidaccessat, | |
116 | since gnulib doesn't support faccessat(,AT_SYMLINK_NOFOLLOW) and | |
117 | since access rights on symlinks are of limited utility. Likewise, | |
118 | wrappers are not provided for accessat or euidaccessat, so as to | |
119 | avoid dragging in -lgen on some platforms. */ | |
120 | ||
121 | _GL_INLINE_HEADER_END | |
122 | ||
123 | #endif /* _GL_HEADER_OPENAT */ |