[AFS]: Add "directory write" support.
Add support for the create, link, symlink, unlink, mkdir, rmdir and
rename VFS operations to the in-kernel AFS filesystem.
Also:
(1) Fix dentry and inode revalidation. d_revalidate should only look at
state of the dentry. Revalidation of the contents of an inode pointed to
by a dentry is now separate.
(2) Fix afs_lookup() to hash negative dentries as well as positive ones.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/fs/afs/security.c b/fs/afs/security.c
index cbdd7f7..f9f424d 100644
--- a/fs/afs/security.c
+++ b/fs/afs/security.c
@@ -92,7 +92,7 @@
ASSERT(auth_inode != NULL);
} else {
auth_inode = afs_iget(vnode->vfs_inode.i_sb, key,
- &vnode->status.parent);
+ &vnode->status.parent, NULL, NULL);
if (IS_ERR(auth_inode))
return ERR_PTR(PTR_ERR(auth_inode));
}
@@ -288,7 +288,8 @@
struct key *key;
int ret;
- _enter("{%x:%x},%x,", vnode->fid.vid, vnode->fid.vnode, mask);
+ _enter("{{%x:%x},%lx},%x,",
+ vnode->fid.vid, vnode->fid.vnode, vnode->flags, mask);
key = afs_request_key(vnode->volume->cell);
if (IS_ERR(key)) {
@@ -296,13 +297,19 @@
return PTR_ERR(key);
}
+ /* if the promise has expired, we need to check the server again */
+ if (!vnode->cb_promised) {
+ _debug("not promised");
+ ret = afs_vnode_fetch_status(vnode, NULL, key);
+ if (ret < 0)
+ goto error;
+ _debug("new promise [fl=%lx]", vnode->flags);
+ }
+
/* check the permits to see if we've got one yet */
ret = afs_check_permit(vnode, key, &access);
- if (ret < 0) {
- key_put(key);
- _leave(" = %d [check]", ret);
- return ret;
- }
+ if (ret < 0)
+ goto error;
/* interpret the access mask */
_debug("REQ %x ACC %x on %s",
@@ -336,10 +343,14 @@
}
key_put(key);
- return generic_permission(inode, mask, NULL);
+ ret = generic_permission(inode, mask, NULL);
+ _leave(" = %d", ret);
+ return ret;
permission_denied:
+ ret = -EACCES;
+error:
key_put(key);
- _leave(" = -EACCES");
- return -EACCES;
+ _leave(" = %d", ret);
+ return ret;
}
