/* SPDX-License-Identifier: LGPL-2.1+ */ #pragma once #include #include #include #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 bool is_path(const char *p) _pure_; int path_split_and_make_absolute(const char *p, char ***ret); bool path_is_absolute(const char *p) _pure_; 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_dir, const char *to_path, char **_r); char* path_startswith(const char *path, const char *prefix) _pure_; int path_compare(const char *a, const char *b) _pure_; bool path_equal(const char *a, const char *b) _pure_; bool path_equal_or_files_same(const char *a, const char *b, int flags); char* path_join_internal(const char *first, ...); #define path_join(x, ...) path_join_internal(x, __VA_ARGS__, (const char*) -1) char* path_simplify(char *path, bool kill_dots); enum { PATH_CHECK_FATAL = 1 << 0, /* If not set, then error message is appended with 'ignoring'. */ PATH_CHECK_ABSOLUTE = 1 << 1, PATH_CHECK_RELATIVE = 1 << 2, }; int path_simplify_and_warn(char *path, unsigned flag, const char *unit, const char *filename, unsigned line, const char *lvalue); 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_binary(const char *name, char **filename); bool paths_check_timestamp(const char* const* paths, usec_t *paths_ts_usec, bool update); int fsck_exists(const char *fstype); int mkfs_exists(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), false); \ 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), false); \ 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. */ #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 parse_path_argument_and_warn(const char *path, bool suppress_root, char **arg); char* dirname_malloc(const char *path); const char *last_path_component(const char *path); int path_extract_filename(const char *p, char **ret); bool filename_is_valid(const char *p) _pure_; bool path_is_valid(const char *p) _pure_; bool path_is_normalized(const char *p) _pure_; char *file_in_same_dir(const char *path, const char *filename); 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); int systemd_installation_has_version(const char *root, unsigned minimal_version); 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 *root); 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);