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fs/jffs2/xattr_trusted.c 1.19 KB
81f7e3824   Eric Lee   Initial Release, ...
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  /*
   * JFFS2 -- Journalling Flash File System, Version 2.
   *
   * Copyright © 2006  NEC Corporation
   *
   * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
   *
   * For licensing information, see the file 'LICENCE' in this directory.
   *
   */
  
  #include <linux/kernel.h>
  #include <linux/fs.h>
  #include <linux/jffs2.h>
  #include <linux/xattr.h>
  #include <linux/mtd/mtd.h>
  #include "nodelist.h"
  
  static int jffs2_trusted_getxattr(const struct xattr_handler *handler,
  				  struct dentry *unused, struct inode *inode,
  				  const char *name, void *buffer, size_t size)
  {
  	return do_jffs2_getxattr(inode, JFFS2_XPREFIX_TRUSTED,
  				 name, buffer, size);
  }
  
  static int jffs2_trusted_setxattr(const struct xattr_handler *handler,
  				  struct dentry *unused, struct inode *inode,
  				  const char *name, const void *buffer,
  				  size_t size, int flags)
  {
  	return do_jffs2_setxattr(inode, JFFS2_XPREFIX_TRUSTED,
  				 name, buffer, size, flags);
  }
  
  static bool jffs2_trusted_listxattr(struct dentry *dentry)
  {
  	return capable(CAP_SYS_ADMIN);
  }
  
  const struct xattr_handler jffs2_trusted_xattr_handler = {
  	.prefix = XATTR_TRUSTED_PREFIX,
  	.list = jffs2_trusted_listxattr,
  	.set = jffs2_trusted_setxattr,
  	.get = jffs2_trusted_getxattr
  };