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git.ipfire.org Git - thirdparty/systemd.git/blob - src/basic/path-util.h
4 This file is part of systemd.
6 Copyright 2010-2012 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 #include "string-util.h"
28 #include "time-util.h"
30 #define DEFAULT_PATH_NORMAL "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin"
31 #define DEFAULT_PATH_SPLIT_USR DEFAULT_PATH_NORMAL ":/sbin:/bin"
34 # define DEFAULT_PATH DEFAULT_PATH_SPLIT_USR
36 # define DEFAULT_PATH DEFAULT_PATH_NORMAL
39 bool is_path(const char *p
) _pure_
;
40 int path_split_and_make_absolute(const char *p
, char ***ret
);
41 bool path_is_absolute(const char *p
) _pure_
;
42 char* path_make_absolute(const char *p
, const char *prefix
);
43 int path_make_absolute_cwd(const char *p
, char **ret
);
44 int path_make_relative(const char *from_dir
, const char *to_path
, char **_r
);
45 char* path_kill_slashes(char *path
);
46 char* path_startswith(const char *path
, const char *prefix
) _pure_
;
47 int path_compare(const char *a
, const char *b
) _pure_
;
48 bool path_equal(const char *a
, const char *b
) _pure_
;
49 bool path_equal_or_files_same(const char *a
, const char *b
, int flags
);
50 char* path_join(const char *root
, const char *path
, const char *rest
);
52 static inline bool path_equal_ptr(const char *a
, const char *b
) {
53 return !!a
== !!b
&& (!a
|| path_equal(a
, b
));
56 /* Note: the search terminates on the first NULL item. */
57 #define PATH_IN_SET(p, ...) \
60 bool _found = false; \
61 STRV_FOREACH(s, STRV_MAKE(__VA_ARGS__)) \
62 if (path_equal(p, *s)) { \
69 #define PATH_STARTSWITH_SET(p, ...) \
72 bool _found = false; \
73 STRV_FOREACH(s, STRV_MAKE(__VA_ARGS__)) \
74 if (path_startswith(p, *s)) { \
81 int path_strv_make_absolute_cwd(char **l
);
82 char** path_strv_resolve(char **l
, const char *root
);
83 char** path_strv_resolve_uniq(char **l
, const char *root
);
85 int find_binary(const char *name
, char **filename
);
87 bool paths_check_timestamp(const char* const* paths
, usec_t
*paths_ts_usec
, bool update
);
89 int fsck_exists(const char *fstype
);
90 int mkfs_exists(const char *fstype
);
92 /* Iterates through the path prefixes of the specified path, going up
93 * the tree, to root. Also returns "" (and not "/"!) for the root
94 * directory. Excludes the specified directory itself */
95 #define PATH_FOREACH_PREFIX(prefix, path) \
96 for (char *_slash = ({ path_kill_slashes(strcpy(prefix, path)); streq(prefix, "/") ? NULL : strrchr(prefix, '/'); }); _slash && ((*_slash = 0), true); _slash = strrchr((prefix), '/'))
98 /* Same as PATH_FOREACH_PREFIX but also includes the specified path itself */
99 #define PATH_FOREACH_PREFIX_MORE(prefix, path) \
100 for (char *_slash = ({ path_kill_slashes(strcpy(prefix, path)); if (streq(prefix, "/")) prefix[0] = 0; strrchr(prefix, 0); }); _slash && ((*_slash = 0), true); _slash = strrchr((prefix), '/'))
102 char *prefix_root(const char *root
, const char *path
);
104 /* Similar to prefix_root(), but returns an alloca() buffer, or
105 * possibly a const pointer into the path parameter */
106 #define prefix_roota(root, path) \
108 const char* _path = (path), *_root = (root), *_ret; \
111 while (_path[0] == '/' && _path[1] == '/') \
113 if (isempty(_root) || path_equal(_root, "/")) \
116 _l = strlen(_root) + 1 + strlen(_path) + 1; \
118 _p = stpcpy(_n, _root); \
119 while (_p > _n && _p[-1] == '/') \
121 if (_path[0] != '/') \
129 int parse_path_argument_and_warn(const char *path
, bool suppress_root
, char **arg
);
131 char* dirname_malloc(const char *path
);
133 bool filename_is_valid(const char *p
) _pure_
;
134 bool path_is_safe(const char *p
) _pure_
;
136 char *file_in_same_dir(const char *path
, const char *filename
);
138 bool hidden_or_backup_file(const char *filename
) _pure_
;
140 bool is_device_path(const char *path
);
141 bool is_deviceallow_pattern(const char *path
);
143 int systemd_installation_has_version(const char *root
, unsigned minimal_version
);
145 bool dot_or_dot_dot(const char *path
);