1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <fcntl.h>
#include <inttypes.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "set.h"
typedef enum CopyFlags {
COPY_REFLINK = 1 << 0, /* Try to reflink */
COPY_MERGE = 1 << 1, /* Merge existing trees with our new one to copy */
COPY_REPLACE = 1 << 2, /* Replace an existing file if there's one */
COPY_SAME_MOUNT = 1 << 3, /* Don't descend recursively into other file systems, across mount point boundaries */
COPY_MERGE_EMPTY = 1 << 4, /* Merge an existing, empty directory with our new tree to copy */
COPY_CRTIME = 1 << 5, /* Generate a user.crtime_usec xattr off the source crtime if there is one, on copying */
COPY_SIGINT = 1 << 6, /* Check for SIGINT regularly and return EINTR if seen (caller needs to block SIGINT) */
COPY_SIGTERM = 1 << 7, /* ditto, but for SIGTERM */
COPY_MAC_CREATE = 1 << 8, /* Create files with the correct MAC label (currently SELinux only) */
COPY_HARDLINKS = 1 << 9, /* Try to reproduce hard links */
COPY_FSYNC = 1 << 10, /* fsync() after we are done */
COPY_FSYNC_FULL = 1 << 11, /* fsync_full() after we are done */
COPY_SYNCFS = 1 << 12, /* syncfs() the *top-level* dir after we are done */
COPY_ALL_XATTRS = 1 << 13, /* Preserve all xattrs when copying, not just those in the user namespace */
COPY_HOLES = 1 << 14, /* Copy holes */
COPY_GRACEFUL_WARN = 1 << 15, /* Skip copying file types that aren't supported by the target filesystem */
COPY_TRUNCATE = 1 << 16, /* Truncate to current file offset after copying */
COPY_LOCK_BSD = 1 << 17, /* Return a BSD exclusively locked file descriptor referring to the copied image/directory. */
COPY_VERIFY_LINKED = 1 << 18, /* Check the source file is still linked after copying. */
COPY_RESTORE_DIRECTORY_TIMESTAMPS = 1 << 19, /* Make sure existing directory timestamps don't change during copying. */
} CopyFlags;
typedef enum DenyType {
DENY_DONT = 0, /* we want INT_TO_PTR(DENY_DONT) to map to NULL */
DENY_INODE,
DENY_CONTENTS,
_DENY_TYPE_MAX,
_DENY_TYPE_INVALID = -EINVAL,
} DenyType;
typedef int (*copy_progress_bytes_t)(uint64_t n_bytes, void *userdata);
typedef int (*copy_progress_path_t)(const char *path, const struct stat *st, void *userdata);
int copy_file_fd_at_full(int dir_fdf, const char *from, int to, CopyFlags copy_flags, copy_progress_bytes_t progress, void *userdata);
static inline int copy_file_fd_at(int dir_fdf, const char *from, int to, CopyFlags copy_flags, copy_progress_bytes_t progress, void *userdata) {
return copy_file_fd_at_full(dir_fdf, from, to, copy_flags, progress, userdata);
}
static inline int copy_file_fd_full(const char *from, int to, CopyFlags copy_flags) {
return copy_file_fd_at_full(AT_FDCWD, from, to, copy_flags, NULL, NULL);
}
static inline int copy_file_fd(const char *from, int to, CopyFlags copy_flags) {
return copy_file_fd_at(AT_FDCWD, from, to, copy_flags, NULL, NULL);
}
int copy_file_at_full(int dir_fdf, const char *from, int dir_fdt, const char *to, int open_flags, mode_t mode, unsigned chattr_flags, unsigned chattr_mask, CopyFlags copy_flags, copy_progress_bytes_t progress, void *userdata);
static inline int copy_file_at(int dir_fdf, const char *from, int dir_fdt, const char *to, int open_flags, mode_t mode, CopyFlags copy_flags) {
return copy_file_at_full(dir_fdf, from, dir_fdt, to, open_flags, mode, 0, 0, copy_flags, NULL, NULL);
}
static inline int copy_file_full(const char *from, const char *to, int open_flags, mode_t mode, unsigned chattr_flags, unsigned chattr_mask, CopyFlags copy_flags, copy_progress_bytes_t progress, void *userdata) {
return copy_file_at_full(AT_FDCWD, from, AT_FDCWD, to, open_flags, mode, chattr_flags, chattr_mask, copy_flags, progress, userdata);
}
static inline int copy_file(const char *from, const char *to, int open_flags, mode_t mode, CopyFlags copy_flags) {
return copy_file_at(AT_FDCWD, from, AT_FDCWD, to, open_flags, mode, copy_flags);
}
int copy_file_atomic_at_full(int dir_fdf, const char *from, int dir_fdt, const char *to, mode_t mode, unsigned chattr_flags, unsigned chattr_mask, CopyFlags copy_flags, copy_progress_bytes_t progress, void *userdata);
static inline int copy_file_atomic_at(int dir_fdf, const char *from, int dir_fdt, const char *to, mode_t mode, CopyFlags copy_flags) {
return copy_file_atomic_at_full(dir_fdf, from, dir_fdt, to, mode, 0, 0, copy_flags, NULL, NULL);
}
static inline int copy_file_atomic_full(const char *from, const char *to, mode_t mode, unsigned chattr_flags, unsigned chattr_mask, CopyFlags copy_flags, copy_progress_bytes_t progress, void *userdata) {
return copy_file_atomic_at_full(AT_FDCWD, from, AT_FDCWD, to, mode, chattr_flags, chattr_mask, copy_flags, progress, userdata);
}
static inline int copy_file_atomic(const char *from, const char *to, mode_t mode, CopyFlags copy_flags) {
return copy_file_atomic_full(from, to, mode, 0, 0, copy_flags, NULL, NULL);
}
int copy_tree_at_full(int fdf, const char *from, int fdt, const char *to, uid_t override_uid, gid_t override_gid, CopyFlags copy_flags, Hashmap *denylist, Set *subvolumes, copy_progress_path_t progress_path, copy_progress_bytes_t progress_bytes, void *userdata);
static inline int copy_tree_at(int fdf, const char *from, int fdt, const char *to, uid_t override_uid, gid_t override_gid, CopyFlags copy_flags, Hashmap *denylist, Set *subvolumes) {
return copy_tree_at_full(fdf, from, fdt, to, override_uid, override_gid, copy_flags, denylist, subvolumes, NULL, NULL, NULL);
}
static inline int copy_tree(const char *from, const char *to, uid_t override_uid, gid_t override_gid, CopyFlags copy_flags, Hashmap *denylist, Set *subvolumes) {
return copy_tree_at_full(AT_FDCWD, from, AT_FDCWD, to, override_uid, override_gid, copy_flags, denylist, subvolumes, NULL, NULL, NULL);
}
int copy_directory_at_full(int dir_fdf, const char *from, int dir_fdt, const char *to, CopyFlags copy_flags, copy_progress_path_t progress_path, copy_progress_bytes_t progress_bytes, void *userdata);
static inline int copy_directory_at(int dir_fdf, const char *from, int dir_fdt, const char *to, CopyFlags copy_flags) {
return copy_directory_at_full(dir_fdf, from, dir_fdt, to, copy_flags, NULL, NULL, NULL);
}
int copy_bytes_full(int fdf, int fdt, uint64_t max_bytes, CopyFlags copy_flags, void **ret_remains, size_t *ret_remains_size, copy_progress_bytes_t progress, void *userdata);
static inline int copy_bytes(int fdf, int fdt, uint64_t max_bytes, CopyFlags copy_flags) {
return copy_bytes_full(fdf, fdt, max_bytes, copy_flags, NULL, NULL, NULL, NULL);
}
int copy_times(int fdf, int fdt, CopyFlags flags);
int copy_access(int fdf, int fdt);
int copy_rights_with_fallback(int fdf, int fdt, const char *patht);
static inline int copy_rights(int fdf, int fdt) {
return copy_rights_with_fallback(fdf, fdt, NULL); /* no fallback */
}
int copy_xattr(int df, const char *from, int dt, const char *to, CopyFlags copy_flags);
int reflink(int infd, int outfd);
int reflink_range(int infd, uint64_t in_offset, int outfd, uint64_t out_offset, uint64_t sz);
|
