| 1 | /* |
| 2 | * linux/fs/ext2/xattr_security.c |
| 3 | * Handler for storing security labels as extended attributes. |
| 4 | */ |
| 5 | |
| 6 | #include "ext2.h" |
| 7 | #include <linux/security.h> |
| 8 | #include "xattr.h" |
| 9 | |
| 10 | static int |
| 11 | ext2_xattr_security_get(const struct xattr_handler *handler, |
| 12 | struct dentry *dentry, const char *name, |
| 13 | void *buffer, size_t size) |
| 14 | { |
| 15 | return ext2_xattr_get(d_inode(dentry), EXT2_XATTR_INDEX_SECURITY, name, |
| 16 | buffer, size); |
| 17 | } |
| 18 | |
| 19 | static int |
| 20 | ext2_xattr_security_set(const struct xattr_handler *handler, |
| 21 | struct dentry *dentry, const char *name, |
| 22 | const void *value, size_t size, int flags) |
| 23 | { |
| 24 | return ext2_xattr_set(d_inode(dentry), EXT2_XATTR_INDEX_SECURITY, name, |
| 25 | value, size, flags); |
| 26 | } |
| 27 | |
| 28 | static int ext2_initxattrs(struct inode *inode, const struct xattr *xattr_array, |
| 29 | void *fs_info) |
| 30 | { |
| 31 | const struct xattr *xattr; |
| 32 | int err = 0; |
| 33 | |
| 34 | for (xattr = xattr_array; xattr->name != NULL; xattr++) { |
| 35 | err = ext2_xattr_set(inode, EXT2_XATTR_INDEX_SECURITY, |
| 36 | xattr->name, xattr->value, |
| 37 | xattr->value_len, 0); |
| 38 | if (err < 0) |
| 39 | break; |
| 40 | } |
| 41 | return err; |
| 42 | } |
| 43 | |
| 44 | int |
| 45 | ext2_init_security(struct inode *inode, struct inode *dir, |
| 46 | const struct qstr *qstr) |
| 47 | { |
| 48 | return security_inode_init_security(inode, dir, qstr, |
| 49 | &ext2_initxattrs, NULL); |
| 50 | } |
| 51 | |
| 52 | const struct xattr_handler ext2_xattr_security_handler = { |
| 53 | .prefix = XATTR_SECURITY_PREFIX, |
| 54 | .get = ext2_xattr_security_get, |
| 55 | .set = ext2_xattr_security_set, |
| 56 | }; |