Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include <linux/reiserfs_fs.h> |
| 2 | #include <linux/errno.h> |
| 3 | #include <linux/fs.h> |
| 4 | #include <linux/pagemap.h> |
| 5 | #include <linux/xattr.h> |
| 6 | #include <linux/reiserfs_xattr.h> |
| 7 | #include <asm/uaccess.h> |
| 8 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | static int |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 10 | security_get(struct inode *inode, const char *name, void *buffer, size_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | { |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 12 | if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX)) |
| 13 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | |
Jeff Mahoney | 6dfede69 | 2009-03-30 14:02:32 -0400 | [diff] [blame] | 15 | if (IS_PRIVATE(inode)) |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 16 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 18 | return reiserfs_xattr_get(inode, name, buffer, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | } |
| 20 | |
| 21 | static int |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 22 | security_set(struct inode *inode, const char *name, const void *buffer, |
| 23 | size_t size, int flags) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | { |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 25 | if (strlen(name) < sizeof(XATTR_SECURITY_PREFIX)) |
| 26 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | |
Jeff Mahoney | 6dfede69 | 2009-03-30 14:02:32 -0400 | [diff] [blame] | 28 | if (IS_PRIVATE(inode)) |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 29 | return -EPERM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 31 | return reiserfs_xattr_set(inode, name, buffer, size, flags); |
| 32 | } |
| 33 | |
Jeff Mahoney | 48b32a3 | 2009-03-30 14:02:38 -0400 | [diff] [blame^] | 34 | static size_t security_list(struct inode *inode, char *list, size_t list_len, |
| 35 | const char *name, size_t namelen) |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 36 | { |
Jeff Mahoney | 48b32a3 | 2009-03-30 14:02:38 -0400 | [diff] [blame^] | 37 | const size_t len = namelen + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Jeff Mahoney | 6dfede69 | 2009-03-30 14:02:32 -0400 | [diff] [blame] | 39 | if (IS_PRIVATE(inode)) |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 40 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Jeff Mahoney | 48b32a3 | 2009-03-30 14:02:38 -0400 | [diff] [blame^] | 42 | if (list && len <= list_len) { |
| 43 | memcpy(list, name, namelen); |
| 44 | list[namelen] = '\0'; |
| 45 | } |
Linus Torvalds | bd4c625 | 2005-07-12 20:21:28 -0700 | [diff] [blame] | 46 | |
| 47 | return len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | } |
| 49 | |
Jeff Mahoney | 48b32a3 | 2009-03-30 14:02:38 -0400 | [diff] [blame^] | 50 | struct xattr_handler reiserfs_xattr_security_handler = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | .prefix = XATTR_SECURITY_PREFIX, |
| 52 | .get = security_get, |
| 53 | .set = security_set, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | .list = security_list, |
| 55 | }; |