1 /* 2 * linux/fs/ext4/xattr_user.c 3 * Handler for extended user attributes. 4 * 5 * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> 6 */ 7 8 #include <linux/string.h> 9 #include <linux/fs.h> 10 #include "ext4_jbd2.h" 11 #include "ext4.h" 12 #include "xattr.h" 13 14 static bool 15 ext4_xattr_user_list(struct dentry *dentry) 16 { 17 return test_opt(dentry->d_sb, XATTR_USER); 18 } 19 20 static int 21 ext4_xattr_user_get(const struct xattr_handler *handler, 22 struct dentry *unused, struct inode *inode, 23 const char *name, void *buffer, size_t size) 24 { 25 if (!test_opt(inode->i_sb, XATTR_USER)) 26 return -EOPNOTSUPP; 27 return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER, 28 name, buffer, size); 29 } 30 31 static int 32 ext4_xattr_user_set(const struct xattr_handler *handler, 33 struct dentry *unused, struct inode *inode, 34 const char *name, const void *value, 35 size_t size, int flags) 36 { 37 if (!test_opt(inode->i_sb, XATTR_USER)) 38 return -EOPNOTSUPP; 39 return ext4_xattr_set(inode, EXT4_XATTR_INDEX_USER, 40 name, value, size, flags); 41 } 42 43 const struct xattr_handler ext4_xattr_user_handler = { 44 .prefix = XATTR_USER_PREFIX, 45 .list = ext4_xattr_user_list, 46 .get = ext4_xattr_user_get, 47 .set = ext4_xattr_user_set, 48 }; 49