Adding upstream version 241.upstream/241upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 190 insertions, 0 deletions

diff --git a/src/basic/path-util.h b/src/basic/path-util.h
new file mode 100644
index 0000000..86c5a57
--- /dev/null
+++ b/src/basic/path-util.h
@@ -0,0 +1,190 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include <alloca.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+#include "macro.h"
+#include "string-util.h"
+#include "strv.h"
+#include "time-util.h"
+
+#define PATH_SPLIT_SBIN_BIN(x) x "sbin:" x "bin"
+#define PATH_SPLIT_SBIN_BIN_NULSTR(x) x "sbin\0" x "bin\0"
+
+#define PATH_NORMAL_SBIN_BIN(x) x "bin"
+#define PATH_NORMAL_SBIN_BIN_NULSTR(x) x "bin\0"
+
+#if HAVE_SPLIT_BIN
+#  define PATH_SBIN_BIN(x) PATH_SPLIT_SBIN_BIN(x)
+#  define PATH_SBIN_BIN_NULSTR(x) PATH_SPLIT_SBIN_BIN_NULSTR(x)
+#else
+#  define PATH_SBIN_BIN(x) PATH_NORMAL_SBIN_BIN(x)
+#  define PATH_SBIN_BIN_NULSTR(x) PATH_NORMAL_SBIN_BIN_NULSTR(x)
+#endif
+
+#define DEFAULT_PATH_NORMAL PATH_SBIN_BIN("/usr/local/") ":" PATH_SBIN_BIN("/usr/")
+#define DEFAULT_PATH_NORMAL_NULSTR PATH_SBIN_BIN_NULSTR("/usr/local/") PATH_SBIN_BIN_NULSTR("/usr/")
+#define DEFAULT_PATH_SPLIT_USR DEFAULT_PATH_NORMAL ":" PATH_SBIN_BIN("/")
+#define DEFAULT_PATH_SPLIT_USR_NULSTR DEFAULT_PATH_NORMAL_NULSTR PATH_SBIN_BIN_NULSTR("/")
+#define DEFAULT_PATH_COMPAT PATH_SPLIT_SBIN_BIN("/usr/local/") ":" PATH_SPLIT_SBIN_BIN("/usr/") ":" PATH_SPLIT_SBIN_BIN("/")
+
+#if HAVE_SPLIT_USR
+#  define DEFAULT_PATH DEFAULT_PATH_SPLIT_USR
+#  define DEFAULT_PATH_NULSTR DEFAULT_PATH_SPLIT_USR_NULSTR
+#else
+#  define DEFAULT_PATH DEFAULT_PATH_NORMAL
+#  define DEFAULT_PATH_NULSTR DEFAULT_PATH_NORMAL_NULSTR
+#endif
+
+bool is_path(const char *p) _pure_;
+int path_split_and_make_absolute(const char *p, char ***ret);
+bool path_is_absolute(const char *p) _pure_;
+char* path_make_absolute(const char *p, const char *prefix);
+int safe_getcwd(char **ret);
+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_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, int flags);
+char* path_join_internal(const char *first, ...);
+#define path_join(x, ...) path_join_internal(x, __VA_ARGS__, (const char*) -1)
+
+char* path_simplify(char *path, bool kill_dots);
+
+static inline bool path_equal_ptr(const char *a, const char *b) {
+        return !!a == !!b && (!a || path_equal(a, b));
+}
+
+/* Note: the search terminates on the first NULL item. */
+#define PATH_IN_SET(p, ...)                                     \
+        ({                                                      \
+                char **_s;                                      \
+                bool _found = false;                            \
+                STRV_FOREACH(_s, STRV_MAKE(__VA_ARGS__))        \
+                        if (path_equal(p, *_s)) {               \
+                               _found = true;                   \
+                               break;                           \
+                        }                                       \
+                _found;                                         \
+        })
+
+#define PATH_STARTSWITH_SET(p, ...)                             \
+        ({                                                      \
+                const char *_p = (p);                           \
+                char *_found = NULL, **_i;                      \
+                STRV_FOREACH(_i, STRV_MAKE(__VA_ARGS__)) {      \
+                        _found = path_startswith(_p, *_i);      \
+                        if (_found)                             \
+                                break;                          \
+                }                                               \
+                _found;                                         \
+        })
+
+int path_strv_make_absolute_cwd(char **l);
+char** path_strv_resolve(char **l, const char *root);
+char** path_strv_resolve_uniq(char **l, const char *root);
+
+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_simplify(strcpy(prefix, path), false); \
+                                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_simplify(strcpy(prefix, path), false); \
+                                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 (empty_or_root(_root))                               \
+                        _ret = _path;                                   \
+                else {                                                  \
+                        _l = strlen(_root) + 1 + strlen(_path) + 1;     \
+                        _n = newa(char, _l);                            \
+                        _p = stpcpy(_n, _root);                         \
+                        while (_p > _n && _p[-1] == '/')                \
+                                _p--;                                   \
+                        if (_path[0] != '/')                            \
+                                *(_p++) = '/';                          \
+                        strcpy(_p, _path);                              \
+                        _ret = _n;                                      \
+                }                                                       \
+                _ret;                                                   \
+        })
+
+int parse_path_argument_and_warn(const char *path, bool suppress_root, char **arg);
+
+char* dirname_malloc(const char *path);
+const char *last_path_component(const char *path);
+int path_extract_filename(const char *p, char **ret);
+
+bool filename_is_valid(const char *p) _pure_;
+bool path_is_valid(const char *p) _pure_;
+bool path_is_normalized(const char *p) _pure_;
+
+char *file_in_same_dir(const char *path, const char *filename);
+
+bool hidden_or_backup_file(const char *filename) _pure_;
+
+bool is_device_path(const char *path);
+
+bool valid_device_node_path(const char *path);
+bool valid_device_allow_pattern(const char *path);
+
+int systemd_installation_has_version(const char *root, unsigned minimal_version);
+
+bool dot_or_dot_dot(const char *path);
+
+static inline const char *skip_dev_prefix(const char *p) {
+        const char *e;
+
+        /* Drop any /dev prefix if there is any */
+
+        e = path_startswith(p, "/dev/");
+
+        return e ?: p;
+}
+
+bool empty_or_root(const char *root);
+static inline const char *empty_to_root(const char *path) {
+        return isempty(path) ? "/" : path;
+}
+
+enum {
+        PATH_CHECK_FATAL    = 1 << 0,  /* If not set, then error message is appended with 'ignoring'. */
+        PATH_CHECK_ABSOLUTE = 1 << 1,
+        PATH_CHECK_RELATIVE = 1 << 2,
+};
+
+int path_simplify_and_warn(char *path, unsigned flag, const char *unit, const char *filename, unsigned line, const char *lvalue);