Commit | Line | Data |
---|---|---|
ac27a0ec | 1 | /* |
617ba13b | 2 | * linux/fs/ext4/xattr_security.c |
ac27a0ec DK |
3 | * Handler for storing security labels as extended attributes. |
4 | */ | |
5 | ||
ac27a0ec DK |
6 | #include <linux/string.h> |
7 | #include <linux/fs.h> | |
ac27a0ec | 8 | #include <linux/security.h> |
5a0e3ad6 | 9 | #include <linux/slab.h> |
3dcf5451 CH |
10 | #include "ext4_jbd2.h" |
11 | #include "ext4.h" | |
ac27a0ec DK |
12 | #include "xattr.h" |
13 | ||
ac27a0ec | 14 | static int |
d9a82a04 | 15 | ext4_xattr_security_get(const struct xattr_handler *handler, |
b296821a AV |
16 | struct dentry *unused, struct inode *inode, |
17 | const char *name, void *buffer, size_t size) | |
ac27a0ec | 18 | { |
b296821a | 19 | return ext4_xattr_get(inode, EXT4_XATTR_INDEX_SECURITY, |
431547b3 | 20 | name, buffer, size); |
ac27a0ec DK |
21 | } |
22 | ||
23 | static int | |
d9a82a04 | 24 | ext4_xattr_security_set(const struct xattr_handler *handler, |
59301226 AV |
25 | struct dentry *unused, struct inode *inode, |
26 | const char *name, const void *value, | |
27 | size_t size, int flags) | |
ac27a0ec | 28 | { |
59301226 | 29 | return ext4_xattr_set(inode, EXT4_XATTR_INDEX_SECURITY, |
431547b3 | 30 | name, value, size, flags); |
ac27a0ec DK |
31 | } |
32 | ||
176576db DH |
33 | static int |
34 | ext4_initxattrs(struct inode *inode, const struct xattr *xattr_array, | |
35 | void *fs_info) | |
ac27a0ec | 36 | { |
9d8f13ba MZ |
37 | const struct xattr *xattr; |
38 | handle_t *handle = fs_info; | |
39 | int err = 0; | |
ac27a0ec | 40 | |
9d8f13ba MZ |
41 | for (xattr = xattr_array; xattr->name != NULL; xattr++) { |
42 | err = ext4_xattr_set_handle(handle, inode, | |
43 | EXT4_XATTR_INDEX_SECURITY, | |
44 | xattr->name, xattr->value, | |
45 | xattr->value_len, 0); | |
46 | if (err < 0) | |
47 | break; | |
ac27a0ec | 48 | } |
ac27a0ec DK |
49 | return err; |
50 | } | |
51 | ||
9d8f13ba MZ |
52 | int |
53 | ext4_init_security(handle_t *handle, struct inode *inode, struct inode *dir, | |
54 | const struct qstr *qstr) | |
55 | { | |
56 | return security_inode_init_security(inode, dir, qstr, | |
57 | &ext4_initxattrs, handle); | |
58 | } | |
59 | ||
11e27528 | 60 | const struct xattr_handler ext4_xattr_security_handler = { |
ac27a0ec | 61 | .prefix = XATTR_SECURITY_PREFIX, |
617ba13b MC |
62 | .get = ext4_xattr_security_get, |
63 | .set = ext4_xattr_security_set, | |
ac27a0ec | 64 | }; |