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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 15:35:18 +0000
commitb750101eb236130cf056c675997decbac904cc49 (patch)
treea5df1a06754bdd014cb975c051c83b01c9a97532 /src/basic/stat-util.h
parentInitial commit. (diff)
downloadsystemd-b750101eb236130cf056c675997decbac904cc49.tar.xz
systemd-b750101eb236130cf056c675997decbac904cc49.zip
Adding upstream version 252.22.upstream/252.22
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/basic/stat-util.h')
-rw-r--r--src/basic/stat-util.h98
1 files changed, 98 insertions, 0 deletions
diff --git a/src/basic/stat-util.h b/src/basic/stat-util.h
new file mode 100644
index 0000000..f9519d8
--- /dev/null
+++ b/src/basic/stat-util.h
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/types.h>
+#include <sys/vfs.h>
+
+#include "macro.h"
+#include "missing_stat.h"
+
+int is_symlink(const char *path);
+int is_dir_full(int atfd, const char *fname, bool follow);
+static inline int is_dir(const char *path, bool follow) {
+ return is_dir_full(AT_FDCWD, path, follow);
+}
+static inline int is_dir_fd(int fd) {
+ return is_dir_full(fd, NULL, false);
+}
+int is_device_node(const char *path);
+
+int dir_is_empty_at(int dir_fd, const char *path, bool ignore_hidden_or_backup);
+static inline int dir_is_empty(const char *path, bool ignore_hidden_or_backup) {
+ return dir_is_empty_at(AT_FDCWD, path, ignore_hidden_or_backup);
+}
+
+bool null_or_empty(struct stat *st) _pure_;
+int null_or_empty_path_with_root(const char *fn, const char *root);
+int null_or_empty_fd(int fd);
+
+static inline int null_or_empty_path(const char *fn) {
+ return null_or_empty_path_with_root(fn, NULL);
+}
+
+int path_is_read_only_fs(const char *path);
+
+int files_same(const char *filea, const char *fileb, int flags);
+
+/* The .f_type field of struct statfs is really weird defined on
+ * different archs. Let's give its type a name. */
+typedef typeof(((struct statfs*)NULL)->f_type) statfs_f_type_t;
+
+bool is_fs_type(const struct statfs *s, statfs_f_type_t magic_value) _pure_;
+int fd_is_fs_type(int fd, statfs_f_type_t magic_value);
+int path_is_fs_type(const char *path, statfs_f_type_t magic_value);
+
+bool is_temporary_fs(const struct statfs *s) _pure_;
+bool is_network_fs(const struct statfs *s) _pure_;
+
+int fd_is_temporary_fs(int fd);
+int fd_is_network_fs(int fd);
+
+int path_is_temporary_fs(const char *path);
+int path_is_network_fs(const char *path);
+
+/* Because statfs.t_type can be int on some architectures, we have to cast
+ * the const magic to the type, otherwise the compiler warns about
+ * signed/unsigned comparison, because the magic can be 32 bit unsigned.
+ */
+#define F_TYPE_EQUAL(a, b) (a == (typeof(a)) b)
+
+int stat_verify_regular(const struct stat *st);
+int fd_verify_regular(int fd);
+
+int stat_verify_directory(const struct stat *st);
+int fd_verify_directory(int fd);
+
+int proc_mounted(void);
+
+bool stat_inode_same(const struct stat *a, const struct stat *b);
+bool stat_inode_unmodified(const struct stat *a, const struct stat *b);
+
+bool statx_inode_same(const struct statx *a, const struct statx *b);
+bool statx_mount_same(const struct new_statx *a, const struct new_statx *b);
+
+int statx_fallback(int dfd, const char *path, int flags, unsigned mask, struct statx *sx);
+
+#if HAS_FEATURE_MEMORY_SANITIZER
+# warning "Explicitly initializing struct statx, to work around msan limitation. Please remove as soon as msan has been updated to not require this."
+# define STRUCT_STATX_DEFINE(var) \
+ struct statx var = {}
+# define STRUCT_NEW_STATX_DEFINE(var) \
+ union { \
+ struct statx sx; \
+ struct new_statx nsx; \
+ } var = {}
+#else
+# define STRUCT_STATX_DEFINE(var) \
+ struct statx var
+# define STRUCT_NEW_STATX_DEFINE(var) \
+ union { \
+ struct statx sx; \
+ struct new_statx nsx; \
+ } var
+#endif