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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
f4f15635 LP |
2 | #pragma once |
3 | ||
21c692e9 | 4 | #include <dirent.h> |
f4f15635 | 5 | #include <fcntl.h> |
71d35b6b | 6 | #include <limits.h> |
11c3a366 TA |
7 | #include <stdbool.h> |
8 | #include <stdint.h> | |
77601719 LP |
9 | #include <sys/inotify.h> |
10 | #include <sys/types.h> | |
f4f15635 LP |
11 | #include <unistd.h> |
12 | ||
13 | #include "time-util.h" | |
dfd14786 | 14 | #include "util.h" |
f4f15635 LP |
15 | |
16 | int unlink_noerrno(const char *path); | |
17 | ||
18 | int rmdir_parents(const char *path, const char *stop); | |
19 | ||
20 | int rename_noreplace(int olddirfd, const char *oldpath, int newdirfd, const char *newpath); | |
21 | ||
22 | int readlinkat_malloc(int fd, const char *p, char **ret); | |
23 | int readlink_malloc(const char *p, char **r); | |
24 | int readlink_value(const char *p, char **ret); | |
25 | int readlink_and_make_absolute(const char *p, char **r); | |
f4f15635 LP |
26 | |
27 | int chmod_and_chown(const char *path, mode_t mode, uid_t uid, gid_t gid); | |
b8da477e | 28 | int fchmod_and_chown(int fd, mode_t mode, uid_t uid, gid_t gid); |
f4f15635 LP |
29 | |
30 | int fchmod_umask(int fd, mode_t mode); | |
4dfaa528 | 31 | int fchmod_opath(int fd, mode_t m); |
f4f15635 LP |
32 | |
33 | int fd_warn_permissions(const char *path, int fd); | |
34 | ||
35 | #define laccess(path, mode) faccessat(AT_FDCWD, (path), (mode), AT_SYMLINK_NOFOLLOW) | |
36 | ||
37 | int touch_file(const char *path, bool parents, usec_t stamp, uid_t uid, gid_t gid, mode_t mode); | |
38 | int touch(const char *path); | |
39 | ||
6c9c51e5 | 40 | int symlink_idempotent(const char *from, const char *to, bool make_relative); |
f4f15635 LP |
41 | |
42 | int symlink_atomic(const char *from, const char *to); | |
43 | int mknod_atomic(const char *path, mode_t mode, dev_t dev); | |
44 | int mkfifo_atomic(const char *path, mode_t mode); | |
4fe3828c | 45 | int mkfifoat_atomic(int dir_fd, const char *path, mode_t mode); |
f4f15635 LP |
46 | |
47 | int get_files_in_directory(const char *path, char ***list); | |
77601719 | 48 | |
992e8f22 LP |
49 | int tmp_dir(const char **ret); |
50 | int var_tmp_dir(const char **ret); | |
34a8f081 | 51 | |
af229d7a ZJS |
52 | int unlink_or_warn(const char *filename); |
53 | ||
77601719 LP |
54 | #define INOTIFY_EVENT_MAX (sizeof(struct inotify_event) + NAME_MAX + 1) |
55 | ||
56 | #define FOREACH_INOTIFY_EVENT(e, buffer, sz) \ | |
57 | for ((e) = &buffer.ev; \ | |
58 | (uint8_t*) (e) < (uint8_t*) (buffer.raw) + (sz); \ | |
59 | (e) = (struct inotify_event*) ((uint8_t*) (e) + sizeof(struct inotify_event) + (e)->len)) | |
60 | ||
61 | union inotify_event_buffer { | |
62 | struct inotify_event ev; | |
63 | uint8_t raw[INOTIFY_EVENT_MAX]; | |
64 | }; | |
430fbf8e LP |
65 | |
66 | int inotify_add_watch_fd(int fd, int what, uint32_t mask); | |
d944dc95 | 67 | |
c4f4fce7 | 68 | enum { |
ef31828d LP |
69 | CHASE_PREFIX_ROOT = 1 << 0, /* If set, the specified path will be prefixed by the specified root before beginning the iteration */ |
70 | CHASE_NONEXISTENT = 1 << 1, /* If set, it's OK if the path doesn't actually exist. */ | |
71 | CHASE_NO_AUTOFS = 1 << 2, /* If set, return -EREMOTE if autofs mount point found */ | |
72 | CHASE_SAFE = 1 << 3, /* If set, return EPERM if we ever traverse from unprivileged to privileged files or directories */ | |
73 | CHASE_OPEN = 1 << 4, /* If set, return an O_PATH object to the final component */ | |
74 | CHASE_TRAIL_SLASH = 1 << 5, /* If set, any trailing slash will be preserved */ | |
75 | CHASE_STEP = 1 << 6, /* If set, just execute a single step of the normalization */ | |
1f56e4ce | 76 | 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. */ |
fd74c6f3 | 77 | CHASE_WARN = 1 << 8, /* Emit an appropriate warning when an error is encountered */ |
c4f4fce7 LP |
78 | }; |
79 | ||
f10f4215 LP |
80 | /* How many iterations to execute before returning -ELOOP */ |
81 | #define CHASE_SYMLINKS_MAX 32 | |
82 | ||
c4f4fce7 | 83 | int chase_symlinks(const char *path_with_prefix, const char *root, unsigned flags, char **ret); |
676bcb0f | 84 | |
21c692e9 LP |
85 | int chase_symlinks_and_open(const char *path, const char *root, unsigned chase_flags, int open_flags, char **ret_path); |
86 | int chase_symlinks_and_opendir(const char *path, const char *root, unsigned chase_flags, char **ret_path, DIR **ret_dir); | |
d2bcd0ba | 87 | int chase_symlinks_and_stat(const char *path, const char *root, unsigned chase_flags, char **ret_path, struct stat *ret_stat); |
21c692e9 | 88 | |
676bcb0f LP |
89 | /* Useful for usage with _cleanup_(), removes a directory and frees the pointer */ |
90 | static inline void rmdir_and_free(char *p) { | |
dfd14786 | 91 | PROTECT_ERRNO; |
676bcb0f LP |
92 | (void) rmdir(p); |
93 | free(p); | |
94 | } | |
95 | DEFINE_TRIVIAL_CLEANUP_FUNC(char*, rmdir_and_free); | |
f5b84de2 LP |
96 | |
97 | static inline void unlink_and_free(char *p) { | |
dfd14786 | 98 | (void) unlink_noerrno(p); |
f5b84de2 LP |
99 | free(p); |
100 | } | |
101 | DEFINE_TRIVIAL_CLEANUP_FUNC(char*, unlink_and_free); | |
57a4359e LP |
102 | |
103 | int access_fd(int fd, int mode); | |
43767d9d | 104 | |
627d2bac | 105 | void unlink_tempfilep(char (*p)[]); |
43767d9d | 106 | int unlinkat_deallocate(int fd, const char *name, int flags); |
11b29a96 LP |
107 | |
108 | int fsync_directory_of_file(int fd); | |
36695e88 | 109 | int fsync_path_at(int at_fd, const char *path); |
ef8becfa | 110 | |
71f51416 LP |
111 | int syncfs_path(int atfd, const char *path); |
112 | ||
ef8becfa | 113 | int open_parent(const char *path, int flags, mode_t mode); |