xattr.c

来自「Linux Kernel 2.6.9 for OMAP1710」· C语言 代码 · 共 24 行

/*
 * linux/fs/ext2/xattr.c
 *
 * Copyright (C) 2001-2003 Andreas Gruenbacher <[e-mail]>
 *
 * Fix by Harrison Xing <[e-mail]>.
 * Extended attributes for symlinks and special files added per
 *  suggestion of Luka Renko <[e-mail]>.
 */

/*
 * Extended attributes are stored on disk blocks allocated outside of
 * any inode. The i_file_acl field is then made to point to this allocated
 * block. If all extended attributes of an inode are identical, these
 * inodes may share the same extended attribute block. Such situations
 * are automatically detected by keeping a cache of recent attribute block
 * numbers and hashes over the block's contents in memory.
 *
 *
 * Extended attribute block layout:
 *
 *   +------------------+
 *   | header           |
 *