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![David Howells](/assets/img/avatar_default.png)
Clean up the AFS sources. Also remove references to AFS keys. RxRPC keys are used instead. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
166 lines
3.8 KiB
C
166 lines
3.8 KiB
C
/*
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* Copyright (c) 2002 Red Hat, Inc. All rights reserved.
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*
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* This software may be freely redistributed under the terms of the
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* GNU General Public License.
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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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* Authors: David Woodhouse <dwmw2@cambridge.redhat.com>
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* David Howells <dhowells@redhat.com>
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include "server.h"
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#include "vnode.h"
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#include "internal.h"
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#include "cmservice.h"
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/*
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* allow the fileserver to request callback state (re-)initialisation
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*/
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int SRXAFSCM_InitCallBackState(struct afs_server *server)
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{
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struct list_head callbacks;
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_enter("%p", server);
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INIT_LIST_HEAD(&callbacks);
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/* transfer the callback list from the server to a temp holding area */
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spin_lock(&server->cb_lock);
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list_add(&callbacks, &server->cb_promises);
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list_del_init(&server->cb_promises);
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/* munch our way through the list, grabbing the inode, dropping all the
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* locks and regetting them in the right order
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*/
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while (!list_empty(&callbacks)) {
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struct afs_vnode *vnode;
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struct inode *inode;
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vnode = list_entry(callbacks.next, struct afs_vnode, cb_link);
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list_del_init(&vnode->cb_link);
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/* try and grab the inode - may fail */
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inode = igrab(AFS_VNODE_TO_I(vnode));
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if (inode) {
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int release = 0;
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spin_unlock(&server->cb_lock);
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spin_lock(&vnode->lock);
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if (vnode->cb_server == server) {
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vnode->cb_server = NULL;
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afs_kafstimod_del_timer(&vnode->cb_timeout);
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spin_lock(&afs_cb_hash_lock);
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list_del_init(&vnode->cb_hash_link);
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spin_unlock(&afs_cb_hash_lock);
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release = 1;
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}
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spin_unlock(&vnode->lock);
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iput(inode);
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afs_put_server(server);
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spin_lock(&server->cb_lock);
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}
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}
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spin_unlock(&server->cb_lock);
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_leave(" = 0");
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return 0;
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}
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/*
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* allow the fileserver to break callback promises
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*/
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int SRXAFSCM_CallBack(struct afs_server *server, size_t count,
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struct afs_callback callbacks[])
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{
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_enter("%p,%u,", server, count);
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for (; count > 0; callbacks++, count--) {
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struct afs_vnode *vnode = NULL;
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struct inode *inode = NULL;
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int valid = 0;
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_debug("- Fid { vl=%08x n=%u u=%u } CB { v=%u x=%u t=%u }",
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callbacks->fid.vid,
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callbacks->fid.vnode,
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callbacks->fid.unique,
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callbacks->version,
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callbacks->expiry,
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callbacks->type
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);
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/* find the inode for this fid */
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spin_lock(&afs_cb_hash_lock);
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list_for_each_entry(vnode,
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&afs_cb_hash(server, &callbacks->fid),
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cb_hash_link) {
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if (memcmp(&vnode->fid, &callbacks->fid,
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sizeof(struct afs_fid)) != 0)
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continue;
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/* right vnode, but is it same server? */
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if (vnode->cb_server != server)
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break; /* no */
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/* try and nail the inode down */
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inode = igrab(AFS_VNODE_TO_I(vnode));
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break;
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}
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spin_unlock(&afs_cb_hash_lock);
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if (inode) {
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/* we've found the record for this vnode */
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spin_lock(&vnode->lock);
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if (vnode->cb_server == server) {
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/* the callback _is_ on the calling server */
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vnode->cb_server = NULL;
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valid = 1;
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afs_kafstimod_del_timer(&vnode->cb_timeout);
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vnode->flags |= AFS_VNODE_CHANGED;
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spin_lock(&server->cb_lock);
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list_del_init(&vnode->cb_link);
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spin_unlock(&server->cb_lock);
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spin_lock(&afs_cb_hash_lock);
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list_del_init(&vnode->cb_hash_link);
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spin_unlock(&afs_cb_hash_lock);
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}
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spin_unlock(&vnode->lock);
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if (valid) {
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invalidate_remote_inode(inode);
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afs_put_server(server);
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}
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iput(inode);
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}
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}
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_leave(" = 0");
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return 0;
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}
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/*
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* allow the fileserver to see if the cache manager is still alive
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*/
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int SRXAFSCM_Probe(struct afs_server *server)
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{
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_debug("SRXAFSCM_Probe(%p)\n", server);
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return 0;
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}
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