*/
#include <linux/init.h>
+#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/circ_buf.h>
#include "internal.h"
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;
}
/*
+ * 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
*/
static int afs_deliver_fs_fetch_status(struct afs_call *call,
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);
+}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff