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95 lines
2.5 KiB
95 lines
2.5 KiB
/* -*- mode: c; c-basic-offset: 8; -*- |
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* vim: noexpandtab sw=8 ts=8 sts=0: |
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* |
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* linux/cluster/ssi/cfs/symlink.c |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE |
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* or NON INFRINGEMENT. See the GNU General Public License for more |
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* details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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* |
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* Questions/Comments/Bugfixes to [email protected] |
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* |
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* Copyright (C) 1992 Rick Sladkey |
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* |
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* Optimization changes Copyright (C) 1994 Florian La Roche |
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* |
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* Jun 7 1999, cache symlink lookups in the page cache. -DaveM |
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* |
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* Portions Copyright (C) 2001 Compaq Computer Corporation |
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* |
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* ocfs2 symlink handling code. |
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* |
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* Copyright (C) 2004, 2005 Oracle. |
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* |
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*/ |
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#include <linux/fs.h> |
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#include <linux/types.h> |
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#include <linux/slab.h> |
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#include <linux/pagemap.h> |
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#include <linux/namei.h> |
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#include <cluster/masklog.h> |
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#include "ocfs2.h" |
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#include "alloc.h" |
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#include "file.h" |
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#include "inode.h" |
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#include "journal.h" |
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#include "symlink.h" |
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#include "xattr.h" |
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#include "buffer_head_io.h" |
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static int ocfs2_fast_symlink_readpage(struct file *unused, struct page *page) |
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{ |
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struct inode *inode = page->mapping->host; |
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struct buffer_head *bh = NULL; |
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int status = ocfs2_read_inode_block(inode, &bh); |
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struct ocfs2_dinode *fe; |
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const char *link; |
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void *kaddr; |
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size_t len; |
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if (status < 0) { |
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mlog_errno(status); |
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return status; |
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} |
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fe = (struct ocfs2_dinode *) bh->b_data; |
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link = (char *) fe->id2.i_symlink; |
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/* will be less than a page size */ |
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len = strnlen(link, ocfs2_fast_symlink_chars(inode->i_sb)); |
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kaddr = kmap_atomic(page); |
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memcpy(kaddr, link, len + 1); |
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kunmap_atomic(kaddr); |
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SetPageUptodate(page); |
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unlock_page(page); |
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brelse(bh); |
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return 0; |
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} |
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const struct address_space_operations ocfs2_fast_symlink_aops = { |
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.readpage = ocfs2_fast_symlink_readpage, |
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}; |
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const struct inode_operations ocfs2_symlink_inode_operations = { |
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.get_link = page_get_link, |
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.getattr = ocfs2_getattr, |
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.setattr = ocfs2_setattr, |
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.listxattr = ocfs2_listxattr, |
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.fiemap = ocfs2_fiemap, |
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};
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