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authorKay Sievers <kay@vrfy.org>2015-06-09 14:27:33 +0200
committerKay Sievers <kay@vrfy.org>2015-06-11 10:52:46 +0200
commita095315b3c31f7a419baceac82c26c3c5ac0cd12 (patch)
treea5a70cf5b5430c0a6873311437b8345d7071f249 /src/basic/path-util.h
parent37c47e5e5b8e47dd886ed6e8355b1203082b4a3e (diff)
build-sys: split internal basic/ library from shared/
basic/ can be used by everything cannot use anything outside of basic/ libsystemd/ can use basic/ cannot use shared/ shared/ can use libsystemd/
Diffstat (limited to 'src/basic/path-util.h')
-rw-r--r--src/basic/path-util.h102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/basic/path-util.h b/src/basic/path-util.h
new file mode 100644
index 0000000000..1eac89c51b
--- /dev/null
+++ b/src/basic/path-util.h
@@ -0,0 +1,102 @@
+/*-*- 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_;
+char** path_split_and_make_absolute(const char *p);
+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);
+char* path_make_absolute_cwd(const char *p);
+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);
+
+char** 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, bool local, char **filename);
+
+bool paths_check_timestamp(const char* const* paths, usec_t *paths_ts_usec, bool update);
+
+int fsck_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; \
+ })