3602ca6f0c
This partially reverts db11487d10 (the logic to
calculate the correct value is removed, we always use the same setting as for
the system manager). Distributions have an easy mechanism to override this if
they wish.
I think making this configurable is better, because different distros clearly
want different defaults here, and making this configurable is nice and clean.
If we don't make it configurable, distros which either have to carry patches,
or what would be worse, rely on some other configuration mechanism, like
/etc/profile. Those other solutions do not apply everywhere (they usually
require the shell to be used at some point), so it is better if we provide
a nice way to override the default.
Fixes #13469.
184 lines
8 KiB
C
184 lines
8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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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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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_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__, (const char*) -1)
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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, ...) \
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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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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_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 = ({ \
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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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