Adding upstream version 241.upstream/241upstream

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

1 files changed, 111 insertions, 0 deletions

diff --git a/src/basic/fs-util.h b/src/basic/fs-util.h
new file mode 100644
index 0000000..7ad030b
--- /dev/null
+++ b/src/basic/fs-util.h
@@ -0,0 +1,111 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <sys/inotify.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "time-util.h"
+#include "util.h"
+
+int unlink_noerrno(const char *path);
+
+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(const char *path, mode_t mode, uid_t uid, gid_t gid);
+int fchmod_and_chown(int fd, mode_t mode, uid_t uid, gid_t gid);
+
+int fchmod_umask(int fd, mode_t mode);
+int fchmod_opath(int fd, mode_t m);
+
+int fd_warn_permissions(const char *path, int fd);
+
+#define laccess(path, mode) 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);
+int touch(const char *path);
+
+int symlink_idempotent(const char *from, const char *to, bool make_relative);
+
+int symlink_atomic(const char *from, const char *to);
+int mknod_atomic(const char *path, mode_t mode, dev_t dev);
+int mkfifo_atomic(const char *path, mode_t mode);
+int mkfifoat_atomic(int dir_fd, const char *path, mode_t 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);
+
+#define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1)
+
+#define FOREACH_INOTIFY_EVENT(e, buffer, sz) \
+        for ((e) = &buffer.ev;                                \
+             (uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \
+             (e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len))
+
+union inotify_event_buffer {
+        struct inotify_event ev;
+        uint8_t raw[INOTIFY_EVENT_MAX];
+};
+
+int inotify_add_watch_fd(int fd, int what, uint32_t mask);
+
+enum {
+        CHASE_PREFIX_ROOT = 1 << 0, /* If set, the specified path will be prefixed by the specified root before beginning the iteration */
+        CHASE_NONEXISTENT = 1 << 1, /* If set, it's OK if the path doesn't actually exist. */
+        CHASE_NO_AUTOFS   = 1 << 2, /* If set, return -EREMOTE if autofs mount point found */
+        CHASE_SAFE        = 1 << 3, /* If set, return EPERM if we ever traverse from unprivileged to privileged files or directories */
+        CHASE_OPEN        = 1 << 4, /* If set, return an O_PATH object to the final component */
+        CHASE_TRAIL_SLASH = 1 << 5, /* If set, any trailing slash will be preserved */
+        CHASE_STEP        = 1 << 6, /* If set, just execute a single step of the normalization */
+        CHASE_NOFOLLOW    = 1 << 7, /* Only valid with CHASE_OPEN: when the path's right-most component refers to symlink return O_PATH fd of the symlink, rather than following it. */
+        CHASE_WARN        = 1 << 8, /* Emit an appropriate warning when an error is encountered */
+};
+
+/* How many iterations to execute before returning -ELOOP */
+#define CHASE_SYMLINKS_MAX 32
+
+int chase_symlinks(const char *path_with_prefix, const char *root, unsigned flags, char **ret);
+
+int chase_symlinks_and_open(const char *path, const char *root, unsigned chase_flags, int open_flags, char **ret_path);
+int chase_symlinks_and_opendir(const char *path, const char *root, unsigned chase_flags, char **ret_path, DIR **ret_dir);
+int chase_symlinks_and_stat(const char *path, const char *root, unsigned chase_flags, char **ret_path, struct stat *ret_stat);
+
+/* Useful for usage with _cleanup_(), removes a directory and frees the pointer */
+static inline void rmdir_and_free(char *p) {
+        PROTECT_ERRNO;
+        (void) rmdir(p);
+        free(p);
+}
+DEFINE_TRIVIAL_CLEANUP_FUNC(char*, rmdir_and_free);
+
+static inline void unlink_and_free(char *p) {
+        (void) unlink_noerrno(p);
+        free(p);
+}
+DEFINE_TRIVIAL_CLEANUP_FUNC(char*, unlink_and_free);
+
+int access_fd(int fd, int mode);
+
+void unlink_tempfilep(char (*p)[]);
+int unlinkat_deallocate(int fd, const char *name, int flags);
+
+int fsync_directory_of_file(int fd);
+int fsync_path_at(int at_fd, const char *path);
+
+int open_parent(const char *path, int flags, mode_t mode);