// SPDX-License-Identifier: GPL-2.0
  #include "reiserfs.h"
  #include <linux/capability.h>
  #include <linux/errno.h>
  #include <linux/fs.h>
  #include <linux/pagemap.h>
  #include <linux/xattr.h>
  #include "xattr.h"
  #include <linux/uaccess.h>
  
  static int
  trusted_get(const struct xattr_handler *handler, struct dentry *unused,
  	    struct inode *inode, const char *name, void *buffer, size_t size)
  {
  	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
  		return -EPERM;
  
  	return reiserfs_xattr_get(inode, xattr_full_name(handler, name),
  				  buffer, size);
  }
  
  static int
  trusted_set(const struct xattr_handler *handler, struct dentry *unused,
  	    struct inode *inode, const char *name, const void *buffer,
  	    size_t size, int flags)
  {
  	if (!capable(CAP_SYS_ADMIN) || IS_PRIVATE(inode))
  		return -EPERM;
  
  	return reiserfs_xattr_set(inode,
  				  xattr_full_name(handler, name),
  				  buffer, size, flags);
  }
  
  static bool trusted_list(struct dentry *dentry)
  {
  	return capable(CAP_SYS_ADMIN) && !IS_PRIVATE(d_inode(dentry));
  }
  
  const struct xattr_handler reiserfs_xattr_trusted_handler = {
  	.prefix = XATTR_TRUSTED_PREFIX,
  	.get = trusted_get,
  	.set = trusted_set,
  	.list = trusted_list,
  };