Adding upstream version 255.4.upstream/255.4

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

1 files changed, 142 insertions, 0 deletions

diff --git a/src/basic/fs-util.h b/src/basic/fs-util.h
new file mode 100644
index 0000000..1023ab7
--- /dev/null
+++ b/src/basic/fs-util.h
@@ -0,0 +1,142 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "alloc-util.h"
+#include "errno-util.h"
+#include "lock-util.h"
+#include "time-util.h"
+#include "user-util.h"
+
+#define MODE_INVALID ((mode_t) -1)
+
+/* The following macros add 1 when converting things, since 0 is a valid mode, while the pointer
+ * NULL is special */
+#define PTR_TO_MODE(p) ((mode_t) ((uintptr_t) (p)-1))
+#define MODE_TO_PTR(u) ((void *) ((uintptr_t) (u)+1))
+
+int rmdir_parents(const char *path, const char *stop);
+
+int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath);
+
+int readlinkat_malloc(int fd, const char *p, char **ret);
+int readlink_malloc(const char *p, char **r);
+int readlink_value(const char *p, char **ret);
+int readlink_and_make_absolute(const char *p, char **r);
+
+int chmod_and_chown_at(int dir_fd, const char *path, mode_t mode, uid_t uid, gid_t gid);
+static inline int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid) {
+        return chmod_and_chown_at(AT_FDCWD, path, mode, uid, gid);
+}
+int fchmod_and_chown_with_fallback(int fd, const char *path, mode_t mode, uid_t uid, gid_t gid);
+static inline int fchmod_and_chown(int fd, mode_t mode, uid_t uid, gid_t gid) {
+        return fchmod_and_chown_with_fallback(fd, NULL, mode, uid, gid); /* no fallback */
+}
+
+int fchmod_umask(int fd, mode_t mode);
+int fchmod_opath(int fd, mode_t m);
+
+int futimens_opath(int fd, const struct timespec ts[2]);
+
+int fd_warn_permissions(const char *path, int fd);
+int stat_warn_permissions(const char *path, const struct stat *st);
+
+#define laccess(path, mode)                                             \
+        RET_NERRNO(faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW))
+
+int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode);
+
+static inline int touch(const char *path) {
+        return touch_file(path, false, USEC_INFINITY, UID_INVALID, GID_INVALID, MODE_INVALID);
+}
+
+int symlink_idempotent(const char *from, const char *to, bool make_relative);
+
+int symlinkat_atomic_full(const char *from, int atfd, const char *to, bool make_relative);
+static inline int symlink_atomic(const char *from, const char *to) {
+        return symlinkat_atomic_full(from, AT_FDCWD, to, false);
+}
+
+int mknodat_atomic(int atfd, const char *path, mode_t mode, dev_t dev);
+static inline int mknod_atomic(const char *path, mode_t mode, dev_t dev) {
+        return mknodat_atomic(AT_FDCWD, path, mode, dev);
+}
+
+int mkfifoat_atomic(int dir_fd, const char *path, mode_t mode);
+static inline int mkfifo_atomic(const char *path, mode_t mode) {
+        return mkfifoat_atomic(AT_FDCWD, path, mode);
+}
+
+int get_files_in_directory(const char *path, char ***list);
+
+int tmp_dir(const char **ret);
+int var_tmp_dir(const char **ret);
+
+int unlink_or_warn(const char *filename);
+
+/* Useful for usage with _cleanup_(), removes a directory and frees the pointer */
+static inline char *rmdir_and_free(char *p) {
+        PROTECT_ERRNO;
+
+        if (!p)
+                return NULL;
+
+        (void) rmdir(p);
+        return mfree(p);
+}
+DEFINE_TRIVIAL_CLEANUP_FUNC(char*, rmdir_and_free);
+
+static inline char* unlink_and_free(char *p) {
+        if (!p)
+                return NULL;
+
+        (void) unlink(p);
+        return mfree(p);
+}
+DEFINE_TRIVIAL_CLEANUP_FUNC(char*, unlink_and_free);
+
+int access_fd(int fd, int mode);
+
+void unlink_tempfilep(char (*p)[]);
+
+typedef enum UnlinkDeallocateFlags {
+        UNLINK_REMOVEDIR = 1 << 0,
+        UNLINK_ERASE     = 1 << 1,
+} UnlinkDeallocateFlags;
+
+int unlinkat_deallocate(int fd, const char *name, UnlinkDeallocateFlags flags);
+
+int open_parent_at(int dir_fd, const char *path, int flags, mode_t mode);
+static inline int open_parent(const char *path, int flags, mode_t mode) {
+        return open_parent_at(AT_FDCWD, path, flags, mode);
+}
+
+int conservative_renameat(int olddirfd, const char *oldpath, int newdirfd, const char *newpath);
+static inline int conservative_rename(const char *oldpath, const char *newpath) {
+        return conservative_renameat(AT_FDCWD, oldpath, AT_FDCWD, newpath);
+}
+
+int posix_fallocate_loop(int fd, uint64_t offset, uint64_t size);
+
+int parse_cifs_service(const char *s, char **ret_host, char **ret_service, char **ret_path);
+
+int open_mkdir_at(int dirfd, const char *path, int flags, mode_t mode);
+
+int openat_report_new(int dirfd, const char *pathname, int flags, mode_t mode, bool *ret_newly_created);
+
+typedef enum XOpenFlags {
+        XO_LABEL     = 1 << 0,
+        XO_SUBVOLUME = 1 << 1,
+} XOpenFlags;
+
+int xopenat(int dir_fd, const char *path, int open_flags, XOpenFlags xopen_flags, mode_t mode);
+
+int xopenat_lock(int dir_fd, const char *path, int open_flags, XOpenFlags xopen_flags, mode_t mode, LockType locktype, int operation);