2 * linux/fs/ext3/xattr_trusted.c
3 * Handler for trusted extended attributes.
5 * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org>
8 #include <linux/module.h>
9 #include <linux/string.h>
11 #include <linux/smp_lock.h>
12 #include <linux/ext3_jbd.h>
13 #include <linux/ext3_fs.h>
16 #define XATTR_TRUSTED_PREFIX "trusted."
19 ext3_xattr_trusted_list(char *list, struct inode *inode,
20 const char *name, int name_len)
22 const int prefix_len = sizeof(XATTR_TRUSTED_PREFIX)-1;
24 if (!capable(CAP_SYS_ADMIN))
28 memcpy(list, XATTR_TRUSTED_PREFIX, prefix_len);
29 memcpy(list+prefix_len, name, name_len);
30 list[prefix_len + name_len] = '\0';
32 return prefix_len + name_len + 1;
36 ext3_xattr_trusted_get(struct inode *inode, const char *name,
37 void *buffer, size_t size)
39 if (strcmp(name, "") == 0)
41 if (!capable(CAP_SYS_ADMIN))
43 return ext3_xattr_get(inode, EXT3_XATTR_INDEX_TRUSTED, name,
48 ext3_xattr_trusted_set(struct inode *inode, const char *name,
49 const void *value, size_t size, int flags)
51 if (strcmp(name, "") == 0)
53 if (!capable(CAP_SYS_ADMIN))
55 return ext3_xattr_set(inode, EXT3_XATTR_INDEX_TRUSTED, name,
59 struct ext3_xattr_handler ext3_xattr_trusted_handler = {
60 .prefix = XATTR_TRUSTED_PREFIX,
61 .list = ext3_xattr_trusted_list,
62 .get = ext3_xattr_trusted_get,
63 .set = ext3_xattr_trusted_set,