#include <linux/types.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
-#include <linux/utsname.h>
+#include <linux/namei.h>
#define MLOG_MASK_PREFIX ML_NAMEI
#include <cluster/masklog.h>
#include "inode.h"
#include "journal.h"
#include "symlink.h"
+#include "xattr.h"
#include "buffer_head_io.h"
-static char *ocfs2_page_getlink(struct dentry * dentry,
- struct page **ppage);
-static char *ocfs2_fast_symlink_getlink(struct inode *inode,
- struct buffer_head **bh);
-
-/* get the link contents into pagecache */
-static char *ocfs2_page_getlink(struct dentry * dentry,
- struct page **ppage)
-{
- struct page * page;
- struct address_space *mapping = dentry->d_inode->i_mapping;
- page = read_mapping_page(mapping, 0, NULL);
- if (IS_ERR(page))
- goto sync_fail;
- wait_on_page_locked(page);
- if (!PageUptodate(page))
- goto async_fail;
- *ppage = page;
- return kmap(page);
-
-async_fail:
- page_cache_release(page);
- return ERR_PTR(-EIO);
-
-sync_fail:
- return (char*)page;
-}
static char *ocfs2_fast_symlink_getlink(struct inode *inode,
struct buffer_head **bh)
mlog_entry_void();
- status = ocfs2_read_block(OCFS2_SB(inode->i_sb),
- OCFS2_I(inode)->ip_blkno,
- bh,
- OCFS2_BH_CACHED,
- inode);
+ status = ocfs2_read_inode_block(inode, bh);
if (status < 0) {
mlog_errno(status);
link = ERR_PTR(status);
return ret;
}
-static void *ocfs2_follow_link(struct dentry *dentry,
- struct nameidata *nd)
+static void *ocfs2_fast_follow_link(struct dentry *dentry,
+ struct nameidata *nd)
{
- int status;
- char *link;
+ int status = 0;
+ int len;
+ char *target, *link = ERR_PTR(-ENOMEM);
struct inode *inode = dentry->d_inode;
- struct page *page = NULL;
struct buffer_head *bh = NULL;
-
- if (ocfs2_inode_is_fast_symlink(inode))
- link = ocfs2_fast_symlink_getlink(inode, &bh);
- else
- link = ocfs2_page_getlink(dentry, &page);
- if (IS_ERR(link)) {
- status = PTR_ERR(link);
+
+ mlog_entry_void();
+
+ BUG_ON(!ocfs2_inode_is_fast_symlink(inode));
+ target = ocfs2_fast_symlink_getlink(inode, &bh);
+ if (IS_ERR(target)) {
+ status = PTR_ERR(target);
mlog_errno(status);
goto bail;
}
- status = vfs_follow_link(nd, link);
- if (status && status != -ENOENT)
+ /* Fast symlinks can't be large */
+ len = strlen(target);
+ link = kzalloc(len + 1, GFP_NOFS);
+ if (!link) {
+ status = -ENOMEM;
mlog_errno(status);
-bail:
- if (page) {
- kunmap(page);
- page_cache_release(page);
+ goto bail;
}
- if (bh)
- brelse(bh);
- return ERR_PTR(status);
+ memcpy(link, target, len);
+
+bail:
+ nd_set_link(nd, status ? ERR_PTR(status) : link);
+ brelse(bh);
+
+ mlog_exit(status);
+ return NULL;
+}
+
+static void ocfs2_fast_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
+{
+ char *link = nd_get_link(nd);
+ if (!IS_ERR(link))
+ kfree(link);
}
-struct inode_operations ocfs2_symlink_inode_operations = {
+const struct inode_operations ocfs2_symlink_inode_operations = {
.readlink = page_readlink,
- .follow_link = ocfs2_follow_link,
+ .follow_link = page_follow_link_light,
+ .put_link = page_put_link,
.getattr = ocfs2_getattr,
+ .setattr = ocfs2_setattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
+ .listxattr = ocfs2_listxattr,
+ .removexattr = generic_removexattr,
+ .fiemap = ocfs2_fiemap,
};
-struct inode_operations ocfs2_fast_symlink_inode_operations = {
+const struct inode_operations ocfs2_fast_symlink_inode_operations = {
.readlink = ocfs2_readlink,
- .follow_link = ocfs2_follow_link,
+ .follow_link = ocfs2_fast_follow_link,
+ .put_link = ocfs2_fast_put_link,
.getattr = ocfs2_getattr,
+ .setattr = ocfs2_setattr,
+ .setxattr = generic_setxattr,
+ .getxattr = generic_getxattr,
+ .listxattr = ocfs2_listxattr,
+ .removexattr = generic_removexattr,
+ .fiemap = ocfs2_fiemap,
};