160 lines
6.9 KiB
C
160 lines
6.9 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010-2012 Lennart Poettering
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***/
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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 "time-util.h"
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#if HAVE_SPLIT_BIN
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# define PATH_SBIN_BIN(x) x "sbin:" x "bin"
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# define PATH_SBIN_BIN_NULSTR(x) x "sbin\0" x "bin\0"
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#else
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# define PATH_SBIN_BIN(x) x "bin"
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# define PATH_SBIN_BIN_NULSTR(x) x "bin\0"
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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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#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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bool is_path(const char *p) _pure_;
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int path_split_and_make_absolute(const char *p, char ***ret);
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bool path_is_absolute(const char *p) _pure_;
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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_kill_slashes(char *path);
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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(const char *root, const char *path, const char *rest);
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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, ...) \
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({ \
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char **s; \
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bool _found = false; \
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STRV_FOREACH(s, STRV_MAKE(__VA_ARGS__)) \
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if (path_equal(p, *s)) { \
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_found = true; \
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break; \
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} \
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_found; \
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})
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#define PATH_STARTSWITH_SET(p, ...) \
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({ \
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char **s; \
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bool _found = false; \
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STRV_FOREACH(s, STRV_MAKE(__VA_ARGS__)) \
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if (path_startswith(p, *s)) { \
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_found = true; \
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break; \
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} \
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_found; \
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})
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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_binary(const char *name, char **filename);
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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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int mkfs_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 = ({ path_kill_slashes(strcpy(prefix, path)); streq(prefix, "/") ? NULL : strrchr(prefix, '/'); }); _slash && ((*_slash = 0), true); _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 = ({ path_kill_slashes(strcpy(prefix, path)); if (streq(prefix, "/")) prefix[0] = 0; strrchr(prefix, 0); }); _slash && ((*_slash = 0), true); _slash = strrchr((prefix), '/'))
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char *prefix_root(const char *root, const char *path);
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/* Similar to prefix_root(), but returns an alloca() buffer, or
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* 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 (empty_or_root(_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 = alloca(_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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bool filename_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 is_deviceallow_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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