1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
4 * linux/cluster/ssi/cfs/symlink.c
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE
14 * or NON INFRINGEMENT. See the GNU General Public License for more
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * Questions/Comments/Bugfixes to ssic-linux-devel@lists.sourceforge.net
23 * Copyright (C) 1992 Rick Sladkey
25 * Optimization changes Copyright (C) 1994 Florian La Roche
27 * Jun 7 1999, cache symlink lookups in the page cache. -DaveM
29 * Portions Copyright (C) 2001 Compaq Computer Corporation
31 * ocfs2 symlink handling code.
33 * Copyright (C) 2004, 2005 Oracle.
38 #include <linux/types.h>
39 #include <linux/slab.h>
40 #include <linux/pagemap.h>
41 #include <linux/namei.h>
43 #include <cluster/masklog.h>
54 #include "buffer_head_io.h"
57 static int ocfs2_fast_symlink_readpage(struct file *unused, struct page *page)
59 struct inode *inode = page->mapping->host;
60 struct buffer_head *bh;
61 int status = ocfs2_read_inode_block(inode, &bh);
62 struct ocfs2_dinode *fe;
72 fe = (struct ocfs2_dinode *) bh->b_data;
73 link = (char *) fe->id2.i_symlink;
74 /* will be less than a page size */
75 len = strnlen(link, ocfs2_fast_symlink_chars(inode->i_sb));
76 kaddr = kmap_atomic(page);
77 memcpy(kaddr, link, len + 1);
79 SetPageUptodate(page);
85 const struct address_space_operations ocfs2_fast_symlink_aops = {
86 .readpage = ocfs2_fast_symlink_readpage,
89 const struct inode_operations ocfs2_symlink_inode_operations = {
90 .readlink = generic_readlink,
91 .follow_link = page_follow_link_light,
92 .put_link = page_put_link,
93 .getattr = ocfs2_getattr,
94 .setattr = ocfs2_setattr,
95 .setxattr = generic_setxattr,
96 .getxattr = generic_getxattr,
97 .listxattr = ocfs2_listxattr,
98 .removexattr = generic_removexattr,
99 .fiemap = ocfs2_fiemap,