fs/ext2/xattr_trusted.c

   1 /*
   2  * linux/fs/ext2/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 "ext2.h"
   9 #include "xattr.h"
  10
  11 static bool
  12 ext2_xattr_trusted_list(struct dentry *dentry)
  13 {
  14         return capable(CAP_SYS_ADMIN);
  15 }
  16
  17 static int
  18 ext2_xattr_trusted_get(const struct xattr_handler *handler,
  19                        struct dentry *unused, struct inode *inode,
  20                        const char *name, void *buffer, size_t size)
  21 {
  22         return ext2_xattr_get(inode, EXT2_XATTR_INDEX_TRUSTED, name,
  23                               buffer, size);
  24 }
  25
  26 static int
  27 ext2_xattr_trusted_set(const struct xattr_handler *handler,
  28                        struct dentry *unused, struct inode *inode,
  29                        const char *name, const void *value,
  30                        size_t size, int flags)
  31 {
  32         return ext2_xattr_set(inode, EXT2_XATTR_INDEX_TRUSTED, name,
  33                               value, size, flags);
  34 }
  35
  36 const struct xattr_handler ext2_xattr_trusted_handler = {
  37         .prefix = XATTR_TRUSTED_PREFIX,
  38         .list   = ext2_xattr_trusted_list,
  39         .get    = ext2_xattr_trusted_get,
  40         .set    = ext2_xattr_trusted_set,
  41 };