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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/basic/fs-util.h | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/basic/fs-util.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/src/basic/fs-util.h b/src/basic/fs-util.h new file mode 100644 index 0000000..c4dffc4 --- /dev/null +++ b/src/basic/fs-util.h @@ -0,0 +1,128 @@ +/* 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 "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 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_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_noerrno(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(const char *path, int flags, mode_t 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); |