189 lines
7.8 KiB
C
189 lines
7.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <alloca.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include "macro.h"
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#include "string-util.h"
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#include "strv.h"
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#include "time-util.h"
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#define PATH_SPLIT_SBIN_BIN(x) x "sbin:" x "bin"
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#define PATH_SPLIT_SBIN_BIN_NULSTR(x) x "sbin\0" x "bin\0"
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#define PATH_NORMAL_SBIN_BIN(x) x "bin"
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#define PATH_NORMAL_SBIN_BIN_NULSTR(x) x "bin\0"
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#if HAVE_SPLIT_BIN
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# define PATH_SBIN_BIN(x) PATH_SPLIT_SBIN_BIN(x)
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# define PATH_SBIN_BIN_NULSTR(x) PATH_SPLIT_SBIN_BIN_NULSTR(x)
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#else
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# define PATH_SBIN_BIN(x) PATH_NORMAL_SBIN_BIN(x)
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# define PATH_SBIN_BIN_NULSTR(x) PATH_NORMAL_SBIN_BIN_NULSTR(x)
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#endif
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#define DEFAULT_PATH_NORMAL PATH_SBIN_BIN("/usr/local/") ":" PATH_SBIN_BIN("/usr/")
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#define DEFAULT_PATH_NORMAL_NULSTR PATH_SBIN_BIN_NULSTR("/usr/local/") PATH_SBIN_BIN_NULSTR("/usr/")
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#define DEFAULT_PATH_SPLIT_USR DEFAULT_PATH_NORMAL ":" PATH_SBIN_BIN("/")
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#define DEFAULT_PATH_SPLIT_USR_NULSTR DEFAULT_PATH_NORMAL_NULSTR PATH_SBIN_BIN_NULSTR("/")
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#define DEFAULT_PATH_COMPAT PATH_SPLIT_SBIN_BIN("/usr/local/") ":" PATH_SPLIT_SBIN_BIN("/usr/") ":" PATH_SPLIT_SBIN_BIN("/")
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#if HAVE_SPLIT_USR
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# define DEFAULT_PATH DEFAULT_PATH_SPLIT_USR
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# define DEFAULT_PATH_NULSTR DEFAULT_PATH_SPLIT_USR_NULSTR
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#else
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# define DEFAULT_PATH DEFAULT_PATH_NORMAL
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# define DEFAULT_PATH_NULSTR DEFAULT_PATH_NORMAL_NULSTR
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#endif
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#ifndef DEFAULT_USER_PATH
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# define DEFAULT_USER_PATH DEFAULT_PATH
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#endif
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static inline bool is_path(const char *p) {
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assert(p);
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return strchr(p, '/');
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}
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static inline bool path_is_absolute(const char *p) {
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assert(p);
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return p[0] == '/';
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}
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int path_split_and_make_absolute(const char *p, char ***ret);
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char* path_make_absolute(const char *p, const char *prefix);
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int safe_getcwd(char **ret);
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int path_make_absolute_cwd(const char *p, char **ret);
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int path_make_relative(const char *from_dir, const char *to_path, char **_r);
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char* path_startswith(const char *path, const char *prefix) _pure_;
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int path_compare(const char *a, const char *b) _pure_;
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bool path_equal(const char *a, const char *b) _pure_;
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bool path_equal_or_files_same(const char *a, const char *b, int flags);
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char* path_join_internal(const char *first, ...);
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#define path_join(x, ...) path_join_internal(x, __VA_ARGS__, POINTER_MAX)
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char* path_simplify(char *path, bool kill_dots);
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enum {
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PATH_CHECK_FATAL = 1 << 0, /* If not set, then error message is appended with 'ignoring'. */
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PATH_CHECK_ABSOLUTE = 1 << 1,
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PATH_CHECK_RELATIVE = 1 << 2,
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};
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int path_simplify_and_warn(char *path, unsigned flag, const char *unit, const char *filename, unsigned line, const char *lvalue);
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static inline bool path_equal_ptr(const char *a, const char *b) {
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return !!a == !!b && (!a || path_equal(a, b));
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}
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/* Note: the search terminates on the first NULL item. */
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#define PATH_IN_SET(p, ...) path_strv_contains(STRV_MAKE(__VA_ARGS__), p)
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char* path_startswith_strv(const char *p, char **set);
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#define PATH_STARTSWITH_SET(p, ...) path_startswith_strv(p, STRV_MAKE(__VA_ARGS__))
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int path_strv_make_absolute_cwd(char **l);
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char** path_strv_resolve(char **l, const char *root);
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char** path_strv_resolve_uniq(char **l, const char *root);
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int find_executable_full(const char *name, bool use_path_envvar, char **ret);
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static inline int find_executable(const char *name, char **ret) {
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return find_executable_full(name, true, ret);
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}
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bool paths_check_timestamp(const char* const* paths, usec_t *paths_ts_usec, bool update);
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int fsck_exists(const char *fstype);
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/* Iterates through the path prefixes of the specified path, going up
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* the tree, to root. Also returns "" (and not "/"!) for the root
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* directory. Excludes the specified directory itself */
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#define PATH_FOREACH_PREFIX(prefix, path) \
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for (char *_slash = ({ \
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path_simplify(strcpy(prefix, path), false); \
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streq(prefix, "/") ? NULL : strrchr(prefix, '/'); \
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}); \
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_slash && ((*_slash = 0), true); \
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_slash = strrchr((prefix), '/'))
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/* Same as PATH_FOREACH_PREFIX but also includes the specified path itself */
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#define PATH_FOREACH_PREFIX_MORE(prefix, path) \
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for (char *_slash = ({ \
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path_simplify(strcpy(prefix, path), false); \
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if (streq(prefix, "/")) \
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prefix[0] = 0; \
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strrchr(prefix, 0); \
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}); \
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_slash && ((*_slash = 0), true); \
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_slash = strrchr((prefix), '/'))
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/* Similar to path_join(), but only works for two components, and only the first one may be NULL and returns
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* an alloca() buffer, or possibly a const pointer into the path parameter. */
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#define prefix_roota(root, path) \
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({ \
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const char* _path = (path), *_root = (root), *_ret; \
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char *_p, *_n; \
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size_t _l; \
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while (_path[0] == '/' && _path[1] == '/') \
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_path ++; \
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if (isempty(_root)) \
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_ret = _path; \
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else { \
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_l = strlen(_root) + 1 + strlen(_path) + 1; \
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_n = newa(char, _l); \
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_p = stpcpy(_n, _root); \
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while (_p > _n && _p[-1] == '/') \
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_p--; \
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if (_path[0] != '/') \
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*(_p++) = '/'; \
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strcpy(_p, _path); \
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_ret = _n; \
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} \
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_ret; \
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})
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int parse_path_argument_and_warn(const char *path, bool suppress_root, char **arg);
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char* dirname_malloc(const char *path);
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const char *last_path_component(const char *path);
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int path_extract_filename(const char *p, char **ret);
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bool filename_is_valid(const char *p) _pure_;
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bool path_is_valid(const char *p) _pure_;
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bool path_is_normalized(const char *p) _pure_;
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char *file_in_same_dir(const char *path, const char *filename);
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bool hidden_or_backup_file(const char *filename) _pure_;
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bool is_device_path(const char *path);
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bool valid_device_node_path(const char *path);
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bool valid_device_allow_pattern(const char *path);
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int systemd_installation_has_version(const char *root, unsigned minimal_version);
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bool dot_or_dot_dot(const char *path);
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static inline const char *skip_dev_prefix(const char *p) {
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const char *e;
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/* Drop any /dev prefix if there is any */
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e = path_startswith(p, "/dev/");
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return e ?: p;
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}
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bool empty_or_root(const char *root);
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static inline const char *empty_to_root(const char *path) {
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return isempty(path) ? "/" : path;
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}
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bool path_strv_contains(char **l, const char *path);
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bool prefixed_path_strv_contains(char **l, const char *path);
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bool credential_name_valid(const char *s);
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