| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| #pragma once |
| |
| #include <alloca.h> |
| #include <stdbool.h> |
| #include <stddef.h> |
| |
| #include "macro.h" |
| #include "string-util.h" |
| #include "strv.h" |
| #include "time-util.h" |
| |
| #define PATH_SPLIT_SBIN_BIN(x) x "sbin:" x "bin" |
| #define PATH_SPLIT_SBIN_BIN_NULSTR(x) x "sbin\0" x "bin\0" |
| |
| #define PATH_NORMAL_SBIN_BIN(x) x "bin" |
| #define PATH_NORMAL_SBIN_BIN_NULSTR(x) x "bin\0" |
| |
| #if HAVE_SPLIT_BIN |
| # define PATH_SBIN_BIN(x) PATH_SPLIT_SBIN_BIN(x) |
| # define PATH_SBIN_BIN_NULSTR(x) PATH_SPLIT_SBIN_BIN_NULSTR(x) |
| #else |
| # define PATH_SBIN_BIN(x) PATH_NORMAL_SBIN_BIN(x) |
| # define PATH_SBIN_BIN_NULSTR(x) PATH_NORMAL_SBIN_BIN_NULSTR(x) |
| #endif |
| |
| #define DEFAULT_PATH_NORMAL PATH_SBIN_BIN("/usr/local/") ":" PATH_SBIN_BIN("/usr/") |
| #define DEFAULT_PATH_NORMAL_NULSTR PATH_SBIN_BIN_NULSTR("/usr/local/") PATH_SBIN_BIN_NULSTR("/usr/") |
| #define DEFAULT_PATH_SPLIT_USR DEFAULT_PATH_NORMAL ":" PATH_SBIN_BIN("/") |
| #define DEFAULT_PATH_SPLIT_USR_NULSTR DEFAULT_PATH_NORMAL_NULSTR PATH_SBIN_BIN_NULSTR("/") |
| #define DEFAULT_PATH_COMPAT PATH_SPLIT_SBIN_BIN("/usr/local/") ":" PATH_SPLIT_SBIN_BIN("/usr/") ":" PATH_SPLIT_SBIN_BIN("/") |
| |
| #if HAVE_SPLIT_USR |
| # define DEFAULT_PATH DEFAULT_PATH_SPLIT_USR |
| # define DEFAULT_PATH_NULSTR DEFAULT_PATH_SPLIT_USR_NULSTR |
| #else |
| # define DEFAULT_PATH DEFAULT_PATH_NORMAL |
| # define DEFAULT_PATH_NULSTR DEFAULT_PATH_NORMAL_NULSTR |
| #endif |
| |
| #ifndef DEFAULT_USER_PATH |
| # define DEFAULT_USER_PATH 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; |
| } |
| |
| bool path_equal_or_files_same(const char *a, const char *b, int flags); |
| /* Compares only the last portion of the input paths, ie: the filenames */ |
| bool path_equal_filename(const char *a, const char *b); |
| |
| 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) |
| |
| char* path_simplify(char *path); |
| |
| static inline bool path_equal_ptr(const char *a, const char *b) { |
| return !!a == !!b && (!a || path_equal(a, b)); |
| } |
| |
| /* 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 **set); |
| #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_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); |
| |
| 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 **l, const char *path); |
| bool prefixed_path_strv_contains(char **l, const char *path); |
| |
| int path_glob_can_match(const char *pattern, const char *prefix, char **ret); |