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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
f4f15635 LP |
2 | #pragma once |
3 | ||
4 | /*** | |
5 | This file is part of systemd. | |
6 | ||
7 | Copyright 2010 Lennart Poettering | |
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8 | ***/ |
9 | ||
21c692e9 | 10 | #include <dirent.h> |
f4f15635 | 11 | #include <fcntl.h> |
71d35b6b | 12 | #include <limits.h> |
11c3a366 TA |
13 | #include <stdbool.h> |
14 | #include <stdint.h> | |
77601719 LP |
15 | #include <sys/inotify.h> |
16 | #include <sys/types.h> | |
f4f15635 LP |
17 | #include <unistd.h> |
18 | ||
19 | #include "time-util.h" | |
dfd14786 | 20 | #include "util.h" |
f4f15635 LP |
21 | |
22 | int unlink_noerrno(const char *path); | |
23 | ||
24 | int rmdir_parents(const char *path, const char *stop); | |
25 | ||
26 | int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath); | |
27 | ||
28 | int readlinkat_malloc(int fd, const char *p, char **ret); | |
29 | int readlink_malloc(const char *p, char **r); | |
30 | int readlink_value(const char *p, char **ret); | |
31 | int readlink_and_make_absolute(const char *p, char **r); | |
f4f15635 LP |
32 | |
33 | int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid); | |
f4f15635 LP |
34 | |
35 | int fchmod_umask(int fd, mode_t mode); | |
4dfaa528 | 36 | int fchmod_opath(int fd, mode_t m); |
f4f15635 LP |
37 | |
38 | int fd_warn_permissions(const char *path, int fd); | |
39 | ||
40 | #define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW) | |
41 | ||
42 | int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode); | |
43 | int touch(const char *path); | |
44 | ||
45 | int symlink_idempotent(const char *from, const char *to); | |
46 | ||
47 | int symlink_atomic(const char *from, const char *to); | |
48 | int mknod_atomic(const char *path, mode_t mode, dev_t dev); | |
49 | int mkfifo_atomic(const char *path, mode_t mode); | |
50 | ||
51 | int get_files_in_directory(const char *path, char ***list); | |
77601719 | 52 | |
992e8f22 LP |
53 | int tmp_dir(const char **ret); |
54 | int var_tmp_dir(const char **ret); | |
34a8f081 | 55 | |
af229d7a ZJS |
56 | int unlink_or_warn(const char *filename); |
57 | ||
77601719 LP |
58 | #define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1) |
59 | ||
60 | #define FOREACH_INOTIFY_EVENT(e, buffer, sz) \ | |
61 | for ((e) = &buffer.ev; \ | |
62 | (uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \ | |
63 | (e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len)) | |
64 | ||
65 | union inotify_event_buffer { | |
66 | struct inotify_event ev; | |
67 | uint8_t raw[INOTIFY_EVENT_MAX]; | |
68 | }; | |
430fbf8e LP |
69 | |
70 | int inotify_add_watch_fd(int fd, int what, uint32_t mask); | |
d944dc95 | 71 | |
c4f4fce7 | 72 | enum { |
f14f1806 LP |
73 | CHASE_PREFIX_ROOT = 1U << 0, /* If set, the specified path will be prefixed by the specified root before beginning the iteration */ |
74 | CHASE_NONEXISTENT = 1U << 1, /* If set, it's OK if the path doesn't actually exist. */ | |
75 | CHASE_NO_AUTOFS = 1U << 2, /* If set, return -EREMOTE if autofs mount point found */ | |
76 | CHASE_SAFE = 1U << 3, /* If set, return EPERM if we ever traverse from unprivileged to privileged files or directories */ | |
1ed34d75 | 77 | CHASE_OPEN = 1U << 4, /* If set, return an O_PATH object to the final component */ |
62570f6f | 78 | CHASE_TRAIL_SLASH = 1U << 5, /* If set, any trailing slash will be preserved */ |
49eb3659 | 79 | CHASE_STEP = 1U << 6, /* If set, just execute a single step of the normalization */ |
c4f4fce7 LP |
80 | }; |
81 | ||
f10f4215 LP |
82 | /* How many iterations to execute before returning -ELOOP */ |
83 | #define CHASE_SYMLINKS_MAX 32 | |
84 | ||
c4f4fce7 | 85 | int chase_symlinks(const char *path_with_prefix, const char *root, unsigned flags, char **ret); |
676bcb0f | 86 | |
21c692e9 LP |
87 | int chase_symlinks_and_open(const char *path, const char *root, unsigned chase_flags, int open_flags, char **ret_path); |
88 | int chase_symlinks_and_opendir(const char *path, const char *root, unsigned chase_flags, char **ret_path, DIR **ret_dir); | |
d2bcd0ba | 89 | int chase_symlinks_and_stat(const char *path, const char *root, unsigned chase_flags, char **ret_path, struct stat *ret_stat); |
21c692e9 | 90 | |
676bcb0f LP |
91 | /* Useful for usage with _cleanup_(), removes a directory and frees the pointer */ |
92 | static inline void rmdir_and_free(char *p) { | |
dfd14786 | 93 | PROTECT_ERRNO; |
676bcb0f LP |
94 | (void) rmdir(p); |
95 | free(p); | |
96 | } | |
97 | DEFINE_TRIVIAL_CLEANUP_FUNC(char*, rmdir_and_free); | |
f5b84de2 LP |
98 | |
99 | static inline void unlink_and_free(char *p) { | |
dfd14786 | 100 | (void) unlink_noerrno(p); |
f5b84de2 LP |
101 | free(p); |
102 | } | |
103 | DEFINE_TRIVIAL_CLEANUP_FUNC(char*, unlink_and_free); | |
57a4359e LP |
104 | |
105 | int access_fd(int fd, int mode); | |
43767d9d LP |
106 | |
107 | int unlinkat_deallocate(int fd, const char *name, int flags); | |
11b29a96 LP |
108 | |
109 | int fsync_directory_of_file(int fd); |