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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#pragma once
/***
This file is part of systemd.
Copyright 2010-2012 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdbool.h>
#include "macro.h"
#include "time-util.h"
#define DEFAULT_PATH_NORMAL "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin"
#define DEFAULT_PATH_SPLIT_USR DEFAULT_PATH_NORMAL ":/sbin:/bin"
#ifdef HAVE_SPLIT_USR
# define DEFAULT_PATH DEFAULT_PATH_SPLIT_USR
#else
# define DEFAULT_PATH DEFAULT_PATH_NORMAL
#endif
bool is_path(const char *p) _pure_;
int path_split_and_make_absolute(const char *p, char ***ret);
int path_get_parent(const char *path, char **parent);
bool path_is_absolute(const char *p) _pure_;
char* path_make_absolute(const char *p, const char *prefix);
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_kill_slashes(char *path);
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);
char* path_join(const char *root, const char *path, const char *rest);
int path_strv_make_absolute_cwd(char **l);
char** path_strv_resolve(char **l, const char *prefix);
char** path_strv_resolve_uniq(char **l, const char *prefix);
int fd_is_mount_point(int fd, const char *filename, int flags);
int path_is_mount_point(const char *path, int flags);
int path_is_read_only_fs(const char *path);
int path_is_os_tree(const char *path);
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_kill_slashes(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_kill_slashes(strcpy(prefix, path)); if (streq(prefix, "/")) prefix[0] = 0; strrchr(prefix, 0); }); _slash && ((*_slash = 0), true); _slash = strrchr((prefix), '/'))
char *prefix_root(const char *root, const char *path);
/* Similar to prefix_root(), but 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) || path_equal(_root, "/")) \
_ret = _path; \
else { \
_l = strlen(_root) + 1 + strlen(_path) + 1; \
_n = alloca(_l); \
_p = stpcpy(_n, _root); \
while (_p > _n && _p[-1] == '/') \
_p--; \
if (_path[0] != '/') \
*(_p++) = '/'; \
strcpy(_p, _path); \
_ret = _n; \
} \
_ret; \
})
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