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
|
/* SPDX-License-Identifier: GPL-3.0-or-later */
/*
* xattr.c
*
* Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
*/
#include "sqfs2tar.h"
static sqfs_xattr_t *mkxattr(const sqfs_xattr_entry_t *key,
const sqfs_xattr_value_t *value)
{
sqfs_xattr_t *ent;
ent = sqfs_xattr_create((const char *)key->key,
value->value, value->size);
if (ent == NULL) {
perror("creating xattr entry");
return NULL;
}
return ent;
}
int get_xattrs(const char *name, const sqfs_inode_generic_t *inode,
sqfs_xattr_t **out)
{
sqfs_xattr_t *list = NULL, *ent;
sqfs_xattr_value_t *value;
sqfs_xattr_entry_t *key;
sqfs_xattr_id_t desc;
sqfs_u32 index;
size_t i;
int ret;
if (xr == NULL)
return 0;
sqfs_inode_get_xattr_index(inode, &index);
if (index == 0xFFFFFFFF)
return 0;
ret = sqfs_xattr_reader_get_desc(xr, index, &desc);
if (ret) {
sqfs_perror(name, "resolving xattr index", ret);
return -1;
}
ret = sqfs_xattr_reader_seek_kv(xr, &desc);
if (ret) {
sqfs_perror(name, "locating xattr key-value pairs", ret);
return -1;
}
for (i = 0; i < desc.count; ++i) {
ret = sqfs_xattr_reader_read_key(xr, &key);
if (ret) {
sqfs_perror(name, "reading xattr key", ret);
goto fail;
}
ret = sqfs_xattr_reader_read_value(xr, key, &value);
if (ret) {
sqfs_perror(name, "reading xattr value", ret);
sqfs_free(key);
goto fail;
}
ent = mkxattr(key, value);
sqfs_free(key);
sqfs_free(value);
if (ent == NULL)
goto fail;
ent->next = list;
list = ent;
}
*out = list;
return 0;
fail:
sqfs_xattr_list_free(list);
return -1;
}
|
