1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 This file is part of systemd.
7 Copyright 2010 Lennart Poettering
15 #include <sys/inotify.h>
16 #include <sys/types.h>
19 #include "time-util.h"
22 int unlink_noerrno(const char *path);
24 #if 0 /// UNNEEDED by elogind
25 int rmdir_parents(const char *path, const char *stop);
27 int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath);
30 int readlinkat_malloc(int fd, const char *p, char **ret);
31 int readlink_malloc(const char *p, char **r);
32 #if 0 /// UNNEEDED by elogind
33 int readlink_value(const char *p, char **ret);
35 int readlink_and_make_absolute(const char *p, char **r);
36 #if 0 /// UNNEEDED by elogind
39 int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid);
41 int fchmod_umask(int fd, mode_t mode);
43 int fd_warn_permissions(const char *path, int fd);
46 #define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW)
48 #define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), 0)
51 int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode);
52 int touch(const char *path);
54 #if 0 /// UNNEEDED by elogind
55 int symlink_idempotent(const char *from, const char *to);
57 int symlink_atomic(const char *from, const char *to);
58 int mknod_atomic(const char *path, mode_t mode, dev_t dev);
59 int mkfifo_atomic(const char *path, mode_t mode);
62 int get_files_in_directory(const char *path, char ***list);
64 int tmp_dir(const char **ret);
65 #if 0 /// UNNEEDED by elogind
66 int var_tmp_dir(const char **ret);
69 int unlink_or_warn(const char *filename);
71 #if 0 /// UNNEEDED by elogind
72 #define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1)
74 #define FOREACH_INOTIFY_EVENT(e, buffer, sz) \
75 for ((e) = &buffer.ev; \
76 (uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \
77 (e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len))
79 union inotify_event_buffer {
80 struct inotify_event ev;
81 uint8_t raw[INOTIFY_EVENT_MAX];
84 int inotify_add_watch_fd(int fd, int what, uint32_t mask);
88 CHASE_PREFIX_ROOT = 1U << 0, /* If set, the specified path will be prefixed by the specified root before beginning the iteration */
89 CHASE_NONEXISTENT = 1U << 1, /* If set, it's OK if the path doesn't actually exist. */
90 CHASE_NO_AUTOFS = 1U << 2, /* If set, return -EREMOTE if autofs mount point found */
91 CHASE_SAFE = 1U << 3, /* If set, return EPERM if we ever traverse from unprivileged to privileged files or directories */
92 CHASE_OPEN = 1U << 4, /* If set, return an O_PATH object to the final component */
93 CHASE_TRAIL_SLASH = 1U << 5, /* If set, any trailing slash will be preserved */
94 CHASE_STEP = 1U << 6, /* If set, just execute a single step of the normalization */
97 /* How many iterations to execute before returning -ELOOP */
98 #define CHASE_SYMLINKS_MAX 32
100 int chase_symlinks(const char *path_with_prefix, const char *root, unsigned flags, char **ret);
102 int chase_symlinks_and_open(const char *path, const char *root, unsigned chase_flags, int open_flags, char **ret_path);
103 int chase_symlinks_and_opendir(const char *path, const char *root, unsigned chase_flags, char **ret_path, DIR **ret_dir);
105 /* Useful for usage with _cleanup_(), removes a directory and frees the pointer */
106 static inline void rmdir_and_free(char *p) {
111 DEFINE_TRIVIAL_CLEANUP_FUNC(char*, rmdir_and_free);
113 #if 0 /// UNNEEDED by elogind
114 static inline void unlink_and_free(char *p) {
115 (void) unlink_noerrno(p);
118 DEFINE_TRIVIAL_CLEANUP_FUNC(char*, unlink_and_free);
121 int access_fd(int fd, int mode);
123 int unlinkat_deallocate(int fd, const char *name, int flags);
125 int fsync_directory_of_file(int fd);