1 /* 2 * linux/fs/ext4/xattr_trusted.c 3 * Handler for trusted extended attributes. 4 * 5 * Copyright (C) 2003 by Andreas Gruenbacher, <a.gruenbacher@computer.org> 6 */ 7 8 #include <linux/string.h> 9 #include <linux/capability.h> 10 #include <linux/fs.h> 11 #include "ext4_jbd2.h" 12 #include "ext4.h" 13 #include "xattr.h" 14 15 static bool 16 ext4_xattr_trusted_list(struct dentry *dentry) 17 { 18 return capable(CAP_SYS_ADMIN); 19 } 20 21 static int 22 ext4_xattr_trusted_get(const struct xattr_handler *handler, 23 struct dentry *unused, struct inode *inode, 24 const char *name, void *buffer, size_t size) 25 { 26 return ext4_xattr_get(inode, EXT4_XATTR_INDEX_TRUSTED, 27 name, buffer, size); 28 } 29 30 static int 31 ext4_xattr_trusted_set(const struct xattr_handler *handler, 32 struct dentry *dentry, const char *name, 33 const void *value, size_t size, int flags) 34 { 35 return ext4_xattr_set(d_inode(dentry), EXT4_XATTR_INDEX_TRUSTED, 36 name, value, size, flags); 37 } 38 39 const struct xattr_handler ext4_xattr_trusted_handler = { 40 .prefix = XATTR_TRUSTED_PREFIX, 41 .list = ext4_xattr_trusted_list, 42 .get = ext4_xattr_trusted_get, 43 .set = ext4_xattr_trusted_set, 44 }; 45