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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <alloca.h>
#include <stdbool.h>
#include <stddef.h>
#include "macro.h"
#include "stat-util.h"
#include "string-util.h"
#include "strv.h"
#include "time-util.h"
#define PATH_SPLIT_BIN(x) x "sbin:" x "bin"
#define PATH_SPLIT_BIN_NULSTR(x) x "sbin\0" x "bin\0"
#define PATH_MERGED_BIN(x) x "bin"
#define PATH_MERGED_BIN_NULSTR(x) x "bin\0"
#define DEFAULT_PATH_WITH_SBIN PATH_SPLIT_BIN("/usr/local/") ":" PATH_SPLIT_BIN("/usr/")
#define DEFAULT_PATH_WITHOUT_SBIN PATH_MERGED_BIN("/usr/local/") ":" PATH_MERGED_BIN("/usr/")
#define DEFAULT_PATH_COMPAT PATH_SPLIT_BIN("/usr/local/") ":" PATH_SPLIT_BIN("/usr/") ":" PATH_SPLIT_BIN("/")
const char* default_PATH(void);
static inline const char* default_user_PATH(void) {
#ifdef DEFAULT_USER_PATH
return DEFAULT_USER_PATH;
#else
return default_PATH();
#endif
}
static inline bool is_path(const char *p) {
if (!p) /* A NULL pointer is definitely not a path */
return false;
return strchr(p, '/');
}
static inline bool path_is_absolute(const char *p) {
if (!p) /* A NULL pointer is definitely not an absolute path */
return false;
return p[0] == '/';
}
int path_split_and_make_absolute(const char *p, char ***ret);
char* path_make_absolute(const char *p, const char *prefix);
int safe_getcwd(char **ret);
int path_make_absolute_cwd(const char *p, char **ret);
int path_make_relative(const char *from, const char *to, char **ret);
int path_make_relative_parent(const char *from_child, const char *to, char **ret);
char* path_startswith_full(const char *path, const char *prefix, bool accept_dot_dot) _pure_;
static inline char* path_startswith(const char *path, const char *prefix) {
return path_startswith_full(path, prefix, true);
}
int path_compare(const char *a, const char *b) _pure_;
static inline bool path_equal(const char *a, const char *b) {
return path_compare(a, b) == 0;
}
int path_compare_filename(const char *a, const char *b);
static inline bool path_equal_filename(const char *a, const char *b) {
return path_compare_filename(a, b) == 0;
}
int path_equal_or_inode_same_full(const char *a, const char *b, int flags);
static inline bool path_equal_or_inode_same(const char *a, const char *b, int flags) {
return path_equal_or_inode_same_full(a, b, flags) > 0;
}
char* path_extend_internal(char **x, ...);
#define path_extend(x, ...) path_extend_internal(x, __VA_ARGS__, POINTER_MAX)
#define path_join(...) path_extend_internal(NULL, __VA_ARGS__, POINTER_MAX)
static inline char* skip_leading_slash(const char *p) {
return skip_leading_chars(p, "/");
}
typedef enum PathSimplifyFlags {
PATH_SIMPLIFY_KEEP_TRAILING_SLASH = 1 << 0,
} PathSimplifyFlags;
char* path_simplify_full(char *path, PathSimplifyFlags flags);
static inline char* path_simplify(char *path) {
return path_simplify_full(path, 0);
}
static inline int path_simplify_alloc(const char *path, char **ret) {
assert(ret);
if (!path) {
*ret = NULL;
return 0;
}
char *t = strdup(path);
if (!t)
return -ENOMEM;
*ret = path_simplify(t);
return 0;
}
/* Note: the search terminates on the first NULL item. */
#define PATH_IN_SET(p, ...) path_strv_contains(STRV_MAKE(__VA_ARGS__), p)
char* path_startswith_strv(const char *p, char * const *strv);
#define PATH_STARTSWITH_SET(p, ...) path_startswith_strv(p, STRV_MAKE(__VA_ARGS__))
int path_strv_make_absolute_cwd(char **l);
char** path_strv_resolve(char **l, const char *root);
char** path_strv_resolve_uniq(char **l, const char *root);
int find_executable_full(const char *name, const char *root, char **exec_search_path, bool use_path_envvar, char **ret_filename, int *ret_fd);
static inline int find_executable(const char *name, char **ret_filename) {
return find_executable_full(name, /* root= */ NULL, NULL, true, ret_filename, NULL);
}
bool paths_check_timestamp(const char* const* paths, usec_t *paths_ts_usec, bool update);
int fsck_exists(void);
int fsck_exists_for_fstype(const char *fstype);
/* Iterates through the path prefixes of the specified path, going up
* the tree, to root. Also returns "" (and not "/"!) for the root
* directory. Excludes the specified directory itself */
#define PATH_FOREACH_PREFIX(prefix, path) \
for (char *_slash = ({ \
path_simplify(strcpy(prefix, path)); \
streq(prefix, "/") ? NULL : strrchr(prefix, '/'); \
}); \
_slash && ((*_slash = 0), true); \
_slash = strrchr((prefix), '/'))
/* Same as PATH_FOREACH_PREFIX but also includes the specified path itself */
#define PATH_FOREACH_PREFIX_MORE(prefix, path) \
for (char *_slash = ({ \
path_simplify(strcpy(prefix, path)); \
if (streq(prefix, "/")) \
prefix[0] = 0; \
strrchr(prefix, 0); \
}); \
_slash && ((*_slash = 0), true); \
_slash = strrchr((prefix), '/'))
/* Similar to path_join(), but only works for two components, and only the first one may be NULL and returns
* an alloca() buffer, or possibly a const pointer into the path parameter. */
/* DEPRECATED: use path_join() instead */
#define prefix_roota(root, path) \
({ \
const char* _path = (path), *_root = (root), *_ret; \
char *_p, *_n; \
size_t _l; \
while (_path[0] == '/' && _path[1] == '/') \
_path++; \
if (isempty(_root)) \
_ret = _path; \
else { \
_l = strlen(_root) + 1 + strlen(_path) + 1; \
_n = newa(char, _l); \
_p = stpcpy(_n, _root); \
while (_p > _n && _p[-1] == '/') \
_p--; \
if (_path[0] != '/') \
*(_p++) = '/'; \
strcpy(_p, _path); \
_ret = _n; \
} \
_ret; \
})
int path_find_first_component(const char **p, bool accept_dot_dot, const char **ret);
int path_find_last_component(const char *path, bool accept_dot_dot, const char **next, const char **ret);
const char* last_path_component(const char *path);
int path_extract_filename(const char *path, char **ret);
int path_extract_directory(const char *path, char **ret);
bool filename_part_is_valid(const char *p) _pure_;
bool filename_is_valid(const char *p) _pure_;
bool path_is_valid_full(const char *p, bool accept_dot_dot) _pure_;
static inline bool path_is_valid(const char *p) {
return path_is_valid_full(p, /* accept_dot_dot= */ true);
}
static inline bool path_is_safe(const char *p) {
return path_is_valid_full(p, /* accept_dot_dot= */ false);
}
bool path_is_normalized(const char *p) _pure_;
int file_in_same_dir(const char *path, const char *filename, char **ret);
bool hidden_or_backup_file(const char *filename) _pure_;
bool is_device_path(const char *path);
bool valid_device_node_path(const char *path);
bool valid_device_allow_pattern(const char *path);
bool dot_or_dot_dot(const char *path);
bool path_implies_directory(const char *path);
static inline const char *skip_dev_prefix(const char *p) {
const char *e;
/* Drop any /dev prefix if there is any */
e = path_startswith(p, "/dev/");
return e ?: p;
}
bool empty_or_root(const char *path);
static inline const char* empty_to_root(const char *path) {
return isempty(path) ? "/" : path;
}
bool path_strv_contains(char * const *l, const char *path);
bool prefixed_path_strv_contains(char * const *l, const char *path);
int path_glob_can_match(const char *pattern, const char *prefix, char **ret);
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