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kernel/linux-imx6_3.14.28/fs/jffs2/xattr_trusted.c 1.41 KB
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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(struct dentry *dentry, const char *name,
  		void *buffer, size_t size, int type)
  {
  	if (!strcmp(name, ""))
  		return -EINVAL;
  	return do_jffs2_getxattr(dentry->d_inode, JFFS2_XPREFIX_TRUSTED,
  				 name, buffer, size);
  }
  
  static int jffs2_trusted_setxattr(struct dentry *dentry, const char *name,
  		const void *buffer, size_t size, int flags, int type)
  {
  	if (!strcmp(name, ""))
  		return -EINVAL;
  	return do_jffs2_setxattr(dentry->d_inode, JFFS2_XPREFIX_TRUSTED,
  				 name, buffer, size, flags);
  }
  
  static size_t jffs2_trusted_listxattr(struct dentry *dentry, char *list,
  		size_t list_size, const char *name, size_t name_len, int type)
  {
  	size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1;
  
  	if (list && retlen<=list_size) {
  		strcpy(list, XATTR_TRUSTED_PREFIX);
  		strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name);
  	}
  
  	return retlen;
  }
  
  const struct xattr_handler jffs2_trusted_xattr_handler = {
  	.prefix = XATTR_TRUSTED_PREFIX,
  	.list = jffs2_trusted_listxattr,
  	.set = jffs2_trusted_setxattr,
  	.get = jffs2_trusted_getxattr
  };