X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=fs%2Fafs%2Ffsclient.c;h=023b95b0d9d7612b41ef895c4a2989513fa6b47a;hb=5fa3577b1a1202972e6e419040438c29f39f59cc;hp=025b1903d9e1fee96c9e9a0b65c7729235cc527c;hpb=31143d5d515ece617ffccb7df5ff75e4d1dfa120;p=karo-tx-linux.git

diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index 025b1903d9e1..023b95b0d9d7 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -67,7 +67,7 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
 	EXTRACT(status->group);
 	bp++; /* sync counter */
 	data_version |= (u64) ntohl(*bp++) << 32;
-	bp++; /* lock count */
+	EXTRACT(status->lock_count);
 	size |= (u64) ntohl(*bp++) << 32;
 	bp++; /* spare 4 */
 	*_bp = bp;
@@ -201,6 +201,29 @@ static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
 	*_bp = bp;
 }
 
+/*
+ * decode an AFSFetchVolumeStatus block
+ */
+static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
+					    struct afs_volume_status *vs)
+{
+	const __be32 *bp = *_bp;
+
+	vs->vid			= ntohl(*bp++);
+	vs->parent_id		= ntohl(*bp++);
+	vs->online		= ntohl(*bp++);
+	vs->in_service		= ntohl(*bp++);
+	vs->blessed		= ntohl(*bp++);
+	vs->needs_salvage	= ntohl(*bp++);
+	vs->type		= ntohl(*bp++);
+	vs->min_quota		= ntohl(*bp++);
+	vs->max_quota		= ntohl(*bp++);
+	vs->blocks_in_use	= ntohl(*bp++);
+	vs->part_blocks_avail	= ntohl(*bp++);
+	vs->part_max_blocks	= ntohl(*bp++);
+	*_bp = bp;
+}
+
 /*
  * deliver reply data to an FS.FetchStatus
  */
@@ -293,9 +316,33 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call,
 	case 0:
 		call->offset = 0;
 		call->unmarshall++;
+		if (call->operation_ID != FSFETCHDATA64) {
+			call->unmarshall++;
+			goto no_msw;
+		}
 
-		/* extract the returned data length */
+		/* extract the upper part of the returned data length of an
+		 * FSFETCHDATA64 op (which should always be 0 using this
+		 * client) */
 	case 1:
+		_debug("extract data length (MSW)");
+		ret = afs_extract_data(call, skb, last, &call->tmp, 4);
+		switch (ret) {
+		case 0:		break;
+		case -EAGAIN:	return 0;
+		default:	return ret;
+		}
+
+		call->count = ntohl(call->tmp);
+		_debug("DATA length MSW: %u", call->count);
+		if (call->count > 0)
+			return -EBADMSG;
+		call->offset = 0;
+		call->unmarshall++;
+
+	no_msw:
+		/* extract the returned data length */
+	case 2:
 		_debug("extract data length");
 		ret = afs_extract_data(call, skb, last, &call->tmp, 4);
 		switch (ret) {
@@ -312,7 +359,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call,
 		call->unmarshall++;
 
 		/* extract the returned data */
-	case 2:
+	case 3:
 		_debug("extract data");
 		if (call->count > 0) {
 			page = call->reply3;
@@ -331,7 +378,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call,
 		call->unmarshall++;
 
 		/* extract the metadata */
-	case 3:
+	case 4:
 		ret = afs_extract_data(call, skb, last, call->buffer,
 				       (21 + 3 + 6) * 4);
 		switch (ret) {
@@ -349,7 +396,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call,
 		call->offset = 0;
 		call->unmarshall++;
 
-	case 4:
+	case 5:
 		_debug("trailer");
 		if (skb->len != 0)
 			return -EBADMSG;
@@ -381,6 +428,56 @@ static const struct afs_call_type afs_RXFSFetchData = {
 	.destructor	= afs_flat_call_destructor,
 };
 
+static const struct afs_call_type afs_RXFSFetchData64 = {
+	.name		= "FS.FetchData64",
+	.deliver	= afs_deliver_fs_fetch_data,
+	.abort_to_error	= afs_abort_to_error,
+	.destructor	= afs_flat_call_destructor,
+};
+
+/*
+ * fetch data from a very large file
+ */
+static int afs_fs_fetch_data64(struct afs_server *server,
+			       struct key *key,
+			       struct afs_vnode *vnode,
+			       off_t offset, size_t length,
+			       struct page *buffer,
+			       const struct afs_wait_mode *wait_mode)
+{
+	struct afs_call *call;
+	__be32 *bp;
+
+	_enter("");
+
+	ASSERTCMP(length, <, ULONG_MAX);
+
+	call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
+	if (!call)
+		return -ENOMEM;
+
+	call->key = key;
+	call->reply = vnode;
+	call->reply2 = NULL; /* volsync */
+	call->reply3 = buffer;
+	call->service_id = FS_SERVICE;
+	call->port = htons(AFS_FS_PORT);
+	call->operation_ID = FSFETCHDATA64;
+
+	/* marshall the parameters */
+	bp = call->request;
+	bp[0] = htonl(FSFETCHDATA64);
+	bp[1] = htonl(vnode->fid.vid);
+	bp[2] = htonl(vnode->fid.vnode);
+	bp[3] = htonl(vnode->fid.unique);
+	bp[4] = htonl(upper_32_bits(offset));
+	bp[5] = htonl((u32) offset);
+	bp[6] = 0;
+	bp[7] = htonl((u32) length);
+
+	return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
 /*
  * fetch data from a file
  */
@@ -394,6 +491,10 @@ int afs_fs_fetch_data(struct afs_server *server,
 	struct afs_call *call;
 	__be32 *bp;
 
+	if (upper_32_bits(offset) || upper_32_bits(offset + length))
+		return afs_fs_fetch_data64(server, key, vnode, offset, length,
+					   buffer, wait_mode);
+
 	_enter("");
 
 	call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
@@ -406,6 +507,7 @@ int afs_fs_fetch_data(struct afs_server *server,
 	call->reply3 = buffer;
 	call->service_id = FS_SERVICE;
 	call->port = htons(AFS_FS_PORT);
+	call->operation_ID = FSFETCHDATA;
 
 	/* marshall the parameters */
 	bp = call->request;
@@ -1032,6 +1134,73 @@ static const struct afs_call_type afs_RXFSStoreData = {
 	.destructor	= afs_flat_call_destructor,
 };
 
+static const struct afs_call_type afs_RXFSStoreData64 = {
+	.name		= "FS.StoreData64",
+	.deliver	= afs_deliver_fs_store_data,
+	.abort_to_error	= afs_abort_to_error,
+	.destructor	= afs_flat_call_destructor,
+};
+
+/*
+ * store a set of pages to a very large file
+ */
+static int afs_fs_store_data64(struct afs_server *server,
+			       struct afs_writeback *wb,
+			       pgoff_t first, pgoff_t last,
+			       unsigned offset, unsigned to,
+			       loff_t size, loff_t pos, loff_t i_size,
+			       const struct afs_wait_mode *wait_mode)
+{
+	struct afs_vnode *vnode = wb->vnode;
+	struct afs_call *call;
+	__be32 *bp;
+
+	_enter(",%x,{%x:%u},,",
+	       key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode);
+
+	call = afs_alloc_flat_call(&afs_RXFSStoreData64,
+				   (4 + 6 + 3 * 2) * 4,
+				   (21 + 6) * 4);
+	if (!call)
+		return -ENOMEM;
+
+	call->wb = wb;
+	call->key = wb->key;
+	call->reply = vnode;
+	call->service_id = FS_SERVICE;
+	call->port = htons(AFS_FS_PORT);
+	call->mapping = vnode->vfs_inode.i_mapping;
+	call->first = first;
+	call->last = last;
+	call->first_offset = offset;
+	call->last_to = to;
+	call->send_pages = true;
+	call->store_version = vnode->status.data_version + 1;
+
+	/* marshall the parameters */
+	bp = call->request;
+	*bp++ = htonl(FSSTOREDATA64);
+	*bp++ = htonl(vnode->fid.vid);
+	*bp++ = htonl(vnode->fid.vnode);
+	*bp++ = htonl(vnode->fid.unique);
+
+	*bp++ = 0; /* mask */
+	*bp++ = 0; /* mtime */
+	*bp++ = 0; /* owner */
+	*bp++ = 0; /* group */
+	*bp++ = 0; /* unix mode */
+	*bp++ = 0; /* segment size */
+
+	*bp++ = htonl(pos >> 32);
+	*bp++ = htonl((u32) pos);
+	*bp++ = htonl(size >> 32);
+	*bp++ = htonl((u32) size);
+	*bp++ = htonl(i_size >> 32);
+	*bp++ = htonl((u32) i_size);
+
+	return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
 /*
  * store a set of pages
  */
@@ -1062,7 +1231,9 @@ int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb,
 	       (unsigned long long) size, (unsigned long long) pos,
 	       (unsigned long long) i_size);
 
-	BUG_ON(i_size > 0xffffffff); // TODO: use 64-bit store
+	if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32)
+		return afs_fs_store_data64(server, wb, first, last, offset, to,
+					   size, pos, i_size, wait_mode);
 
 	call = afs_alloc_flat_call(&afs_RXFSStoreData,
 				   (4 + 6 + 3) * 4,
@@ -1158,6 +1329,61 @@ static const struct afs_call_type afs_RXFSStoreData_as_Status = {
 	.destructor	= afs_flat_call_destructor,
 };
 
+static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
+	.name		= "FS.StoreData64",
+	.deliver	= afs_deliver_fs_store_status,
+	.abort_to_error	= afs_abort_to_error,
+	.destructor	= afs_flat_call_destructor,
+};
+
+/*
+ * set the attributes on a very large file, using FS.StoreData rather than
+ * FS.StoreStatus so as to alter the file size also
+ */
+static int afs_fs_setattr_size64(struct afs_server *server, struct key *key,
+				 struct afs_vnode *vnode, struct iattr *attr,
+				 const struct afs_wait_mode *wait_mode)
+{
+	struct afs_call *call;
+	__be32 *bp;
+
+	_enter(",%x,{%x:%u},,",
+	       key_serial(key), vnode->fid.vid, vnode->fid.vnode);
+
+	ASSERT(attr->ia_valid & ATTR_SIZE);
+
+	call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status,
+				   (4 + 6 + 3 * 2) * 4,
+				   (21 + 6) * 4);
+	if (!call)
+		return -ENOMEM;
+
+	call->key = key;
+	call->reply = vnode;
+	call->service_id = FS_SERVICE;
+	call->port = htons(AFS_FS_PORT);
+	call->store_version = vnode->status.data_version + 1;
+	call->operation_ID = FSSTOREDATA;
+
+	/* marshall the parameters */
+	bp = call->request;
+	*bp++ = htonl(FSSTOREDATA64);
+	*bp++ = htonl(vnode->fid.vid);
+	*bp++ = htonl(vnode->fid.vnode);
+	*bp++ = htonl(vnode->fid.unique);
+
+	xdr_encode_AFS_StoreStatus(&bp, attr);
+
+	*bp++ = 0;				/* position of start of write */
+	*bp++ = 0;
+	*bp++ = 0;				/* size of write */
+	*bp++ = 0;
+	*bp++ = htonl(attr->ia_size >> 32);	/* new file length */
+	*bp++ = htonl((u32) attr->ia_size);
+
+	return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
 /*
  * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
  * so as to alter the file size also
@@ -1173,7 +1399,9 @@ static int afs_fs_setattr_size(struct afs_server *server, struct key *key,
 	       key_serial(key), vnode->fid.vid, vnode->fid.vnode);
 
 	ASSERT(attr->ia_valid & ATTR_SIZE);
-	ASSERTCMP(attr->ia_size, <=, 0xffffffff); // TODO: use 64-bit store
+	if (attr->ia_size >> 32)
+		return afs_fs_setattr_size64(server, key, vnode, attr,
+					     wait_mode);
 
 	call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status,
 				   (4 + 6 + 3) * 4,
@@ -1245,3 +1473,431 @@ int afs_fs_setattr(struct afs_server *server, struct key *key,
 
 	return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
 }
+
+/*
+ * deliver reply data to an FS.GetVolumeStatus
+ */
+static int afs_deliver_fs_get_volume_status(struct afs_call *call,
+					    struct sk_buff *skb, bool last)
+{
+	const __be32 *bp;
+	char *p;
+	int ret;
+
+	_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
+
+	switch (call->unmarshall) {
+	case 0:
+		call->offset = 0;
+		call->unmarshall++;
+
+		/* extract the returned status record */
+	case 1:
+		_debug("extract status");
+		ret = afs_extract_data(call, skb, last, call->buffer,
+				       12 * 4);
+		switch (ret) {
+		case 0:		break;
+		case -EAGAIN:	return 0;
+		default:	return ret;
+		}
+
+		bp = call->buffer;
+		xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2);
+		call->offset = 0;
+		call->unmarshall++;
+
+		/* extract the volume name length */
+	case 2:
+		ret = afs_extract_data(call, skb, last, &call->tmp, 4);
+		switch (ret) {
+		case 0:		break;
+		case -EAGAIN:	return 0;
+		default:	return ret;
+		}
+
+		call->count = ntohl(call->tmp);
+		_debug("volname length: %u", call->count);
+		if (call->count >= AFSNAMEMAX)
+			return -EBADMSG;
+		call->offset = 0;
+		call->unmarshall++;
+
+		/* extract the volume name */
+	case 3:
+		_debug("extract volname");
+		if (call->count > 0) {
+			ret = afs_extract_data(call, skb, last, call->reply3,
+					       call->count);
+			switch (ret) {
+			case 0:		break;
+			case -EAGAIN:	return 0;
+			default:	return ret;
+			}
+		}
+
+		p = call->reply3;
+		p[call->count] = 0;
+		_debug("volname '%s'", p);
+
+		call->offset = 0;
+		call->unmarshall++;
+
+		/* extract the volume name padding */
+		if ((call->count & 3) == 0) {
+			call->unmarshall++;
+			goto no_volname_padding;
+		}
+		call->count = 4 - (call->count & 3);
+
+	case 4:
+		ret = afs_extract_data(call, skb, last, call->buffer,
+				       call->count);
+		switch (ret) {
+		case 0:		break;
+		case -EAGAIN:	return 0;
+		default:	return ret;
+		}
+
+		call->offset = 0;
+		call->unmarshall++;
+	no_volname_padding:
+
+		/* extract the offline message length */
+	case 5:
+		ret = afs_extract_data(call, skb, last, &call->tmp, 4);
+		switch (ret) {
+		case 0:		break;
+		case -EAGAIN:	return 0;
+		default:	return ret;
+		}
+
+		call->count = ntohl(call->tmp);
+		_debug("offline msg length: %u", call->count);
+		if (call->count >= AFSNAMEMAX)
+			return -EBADMSG;
+		call->offset = 0;
+		call->unmarshall++;
+
+		/* extract the offline message */
+	case 6:
+		_debug("extract offline");
+		if (call->count > 0) {
+			ret = afs_extract_data(call, skb, last, call->reply3,
+					       call->count);
+			switch (ret) {
+			case 0:		break;
+			case -EAGAIN:	return 0;
+			default:	return ret;
+			}
+		}
+
+		p = call->reply3;
+		p[call->count] = 0;
+		_debug("offline '%s'", p);
+
+		call->offset = 0;
+		call->unmarshall++;
+
+		/* extract the offline message padding */
+		if ((call->count & 3) == 0) {
+			call->unmarshall++;
+			goto no_offline_padding;
+		}
+		call->count = 4 - (call->count & 3);
+
+	case 7:
+		ret = afs_extract_data(call, skb, last, call->buffer,
+				       call->count);
+		switch (ret) {
+		case 0:		break;
+		case -EAGAIN:	return 0;
+		default:	return ret;
+		}
+
+		call->offset = 0;
+		call->unmarshall++;
+	no_offline_padding:
+
+		/* extract the message of the day length */
+	case 8:
+		ret = afs_extract_data(call, skb, last, &call->tmp, 4);
+		switch (ret) {
+		case 0:		break;
+		case -EAGAIN:	return 0;
+		default:	return ret;
+		}
+
+		call->count = ntohl(call->tmp);
+		_debug("motd length: %u", call->count);
+		if (call->count >= AFSNAMEMAX)
+			return -EBADMSG;
+		call->offset = 0;
+		call->unmarshall++;
+
+		/* extract the message of the day */
+	case 9:
+		_debug("extract motd");
+		if (call->count > 0) {
+			ret = afs_extract_data(call, skb, last, call->reply3,
+					       call->count);
+			switch (ret) {
+			case 0:		break;
+			case -EAGAIN:	return 0;
+			default:	return ret;
+			}
+		}
+
+		p = call->reply3;
+		p[call->count] = 0;
+		_debug("motd '%s'", p);
+
+		call->offset = 0;
+		call->unmarshall++;
+
+		/* extract the message of the day padding */
+		if ((call->count & 3) == 0) {
+			call->unmarshall++;
+			goto no_motd_padding;
+		}
+		call->count = 4 - (call->count & 3);
+
+	case 10:
+		ret = afs_extract_data(call, skb, last, call->buffer,
+				       call->count);
+		switch (ret) {
+		case 0:		break;
+		case -EAGAIN:	return 0;
+		default:	return ret;
+		}
+
+		call->offset = 0;
+		call->unmarshall++;
+	no_motd_padding:
+
+	case 11:
+		_debug("trailer %d", skb->len);
+		if (skb->len != 0)
+			return -EBADMSG;
+		break;
+	}
+
+	if (!last)
+		return 0;
+
+	_leave(" = 0 [done]");
+	return 0;
+}
+
+/*
+ * destroy an FS.GetVolumeStatus call
+ */
+static void afs_get_volume_status_call_destructor(struct afs_call *call)
+{
+	kfree(call->reply3);
+	call->reply3 = NULL;
+	afs_flat_call_destructor(call);
+}
+
+/*
+ * FS.GetVolumeStatus operation type
+ */
+static const struct afs_call_type afs_RXFSGetVolumeStatus = {
+	.name		= "FS.GetVolumeStatus",
+	.deliver	= afs_deliver_fs_get_volume_status,
+	.abort_to_error	= afs_abort_to_error,
+	.destructor	= afs_get_volume_status_call_destructor,
+};
+
+/*
+ * fetch the status of a volume
+ */
+int afs_fs_get_volume_status(struct afs_server *server,
+			     struct key *key,
+			     struct afs_vnode *vnode,
+			     struct afs_volume_status *vs,
+			     const struct afs_wait_mode *wait_mode)
+{
+	struct afs_call *call;
+	__be32 *bp;
+	void *tmpbuf;
+
+	_enter("");
+
+	tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
+	if (!tmpbuf)
+		return -ENOMEM;
+
+	call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4);
+	if (!call) {
+		kfree(tmpbuf);
+		return -ENOMEM;
+	}
+
+	call->key = key;
+	call->reply = vnode;
+	call->reply2 = vs;
+	call->reply3 = tmpbuf;
+	call->service_id = FS_SERVICE;
+	call->port = htons(AFS_FS_PORT);
+
+	/* marshall the parameters */
+	bp = call->request;
+	bp[0] = htonl(FSGETVOLUMESTATUS);
+	bp[1] = htonl(vnode->fid.vid);
+
+	return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
+ */
+static int afs_deliver_fs_xxxx_lock(struct afs_call *call,
+				    struct sk_buff *skb, bool last)
+{
+	const __be32 *bp;
+
+	_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
+
+	afs_transfer_reply(call, skb);
+	if (!last)
+		return 0;
+
+	if (call->reply_size != call->reply_max)
+		return -EBADMSG;
+
+	/* unmarshall the reply once we've received all of it */
+	bp = call->buffer;
+	/* xdr_decode_AFSVolSync(&bp, call->replyX); */
+
+	_leave(" = 0 [done]");
+	return 0;
+}
+
+/*
+ * FS.SetLock operation type
+ */
+static const struct afs_call_type afs_RXFSSetLock = {
+	.name		= "FS.SetLock",
+	.deliver	= afs_deliver_fs_xxxx_lock,
+	.abort_to_error	= afs_abort_to_error,
+	.destructor	= afs_flat_call_destructor,
+};
+
+/*
+ * FS.ExtendLock operation type
+ */
+static const struct afs_call_type afs_RXFSExtendLock = {
+	.name		= "FS.ExtendLock",
+	.deliver	= afs_deliver_fs_xxxx_lock,
+	.abort_to_error	= afs_abort_to_error,
+	.destructor	= afs_flat_call_destructor,
+};
+
+/*
+ * FS.ReleaseLock operation type
+ */
+static const struct afs_call_type afs_RXFSReleaseLock = {
+	.name		= "FS.ReleaseLock",
+	.deliver	= afs_deliver_fs_xxxx_lock,
+	.abort_to_error	= afs_abort_to_error,
+	.destructor	= afs_flat_call_destructor,
+};
+
+/*
+ * get a lock on a file
+ */
+int afs_fs_set_lock(struct afs_server *server,
+		    struct key *key,
+		    struct afs_vnode *vnode,
+		    afs_lock_type_t type,
+		    const struct afs_wait_mode *wait_mode)
+{
+	struct afs_call *call;
+	__be32 *bp;
+
+	_enter("");
+
+	call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4);
+	if (!call)
+		return -ENOMEM;
+
+	call->key = key;
+	call->reply = vnode;
+	call->service_id = FS_SERVICE;
+	call->port = htons(AFS_FS_PORT);
+
+	/* marshall the parameters */
+	bp = call->request;
+	*bp++ = htonl(FSSETLOCK);
+	*bp++ = htonl(vnode->fid.vid);
+	*bp++ = htonl(vnode->fid.vnode);
+	*bp++ = htonl(vnode->fid.unique);
+	*bp++ = htonl(type);
+
+	return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * extend a lock on a file
+ */
+int afs_fs_extend_lock(struct afs_server *server,
+		       struct key *key,
+		       struct afs_vnode *vnode,
+		       const struct afs_wait_mode *wait_mode)
+{
+	struct afs_call *call;
+	__be32 *bp;
+
+	_enter("");
+
+	call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4);
+	if (!call)
+		return -ENOMEM;
+
+	call->key = key;
+	call->reply = vnode;
+	call->service_id = FS_SERVICE;
+	call->port = htons(AFS_FS_PORT);
+
+	/* marshall the parameters */
+	bp = call->request;
+	*bp++ = htonl(FSEXTENDLOCK);
+	*bp++ = htonl(vnode->fid.vid);
+	*bp++ = htonl(vnode->fid.vnode);
+	*bp++ = htonl(vnode->fid.unique);
+
+	return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * release a lock on a file
+ */
+int afs_fs_release_lock(struct afs_server *server,
+			struct key *key,
+			struct afs_vnode *vnode,
+			const struct afs_wait_mode *wait_mode)
+{
+	struct afs_call *call;
+	__be32 *bp;
+
+	_enter("");
+
+	call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4);
+	if (!call)
+		return -ENOMEM;
+
+	call->key = key;
+	call->reply = vnode;
+	call->service_id = FS_SERVICE;
+	call->port = htons(AFS_FS_PORT);
+
+	/* marshall the parameters */
+	bp = call->request;
+	*bp++ = htonl(FSRELEASELOCK);
+	*bp++ = htonl(vnode->fid.vid);
+	*bp++ = htonl(vnode->fid.vnode);
+	*bp++ = htonl(vnode->fid.unique);
+
+	return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}