[Note: that will be a long series of very small steps massaging namei.c to
fix too-early-mntput() bugs; I apologize for the length of that animal,
but I *really* want to be extremely careful in that area]
(1/19)
Declaration of struct path moved up.
The first argument of do_follow_link() switched to struct path *; all callers
used to pass foo.dentry there, now they pass &foo instead.
Obviously equivalent transformations.
Signed-off-by: Al Viro <[email protected]>
----
diff -urN RC12-rc4-0/fs/namei.c RC12-rc4-1/fs/namei.c
--- RC12-rc4-0/fs/namei.c 2005-05-07 04:04:51.000000000 -0400
+++ RC12-rc4-1/fs/namei.c 2005-05-19 16:39:29.104704191 -0400
@@ -493,6 +493,11 @@
return PTR_ERR(link);
}
+struct path {
+ struct vfsmount *mnt;
+ struct dentry *dentry;
+};
+
static inline int __do_follow_link(struct dentry *dentry, struct nameidata *nd)
{
int error;
@@ -518,7 +523,7 @@
* Without that kind of total limit, nasty chains of consecutive
* symlinks can cause almost arbitrarily long lookups.
*/
-static inline int do_follow_link(struct dentry *dentry, struct nameidata *nd)
+static inline int do_follow_link(struct path *path, struct nameidata *nd)
{
int err = -ELOOP;
if (current->link_count >= MAX_NESTED_LINKS)
@@ -527,13 +532,13 @@
goto loop;
BUG_ON(nd->depth >= MAX_NESTED_LINKS);
cond_resched();
- err = security_inode_follow_link(dentry, nd);
+ err = security_inode_follow_link(path->dentry, nd);
if (err)
goto loop;
current->link_count++;
current->total_link_count++;
nd->depth++;
- err = __do_follow_link(dentry, nd);
+ err = __do_follow_link(path->dentry, nd);
current->link_count--;
nd->depth--;
return err;
@@ -641,11 +646,6 @@
follow_mount(mnt, dentry);
}
-struct path {
- struct vfsmount *mnt;
- struct dentry *dentry;
-};
-
/*
* It's more convoluted than I'd like it to be, but... it's still fairly
* small and for now I'd prefer to have fast path as straight as possible.
@@ -784,7 +784,7 @@
if (inode->i_op->follow_link) {
mntget(next.mnt);
- err = do_follow_link(next.dentry, nd);
+ err = do_follow_link(&next, nd);
dput(next.dentry);
mntput(next.mnt);
if (err)
@@ -838,7 +838,7 @@
if ((lookup_flags & LOOKUP_FOLLOW)
&& inode && inode->i_op && inode->i_op->follow_link) {
mntget(next.mnt);
- err = do_follow_link(next.dentry, nd);
+ err = do_follow_link(&next, nd);
dput(next.dentry);
mntput(next.mnt);
if (err)
-
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