-/* fsclient.c: AFS File Server client stubs
+/* AFS File Server client stubs
*
- * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
#include <linux/init.h>
#include <linux/sched.h>
-#include <rxrpc/rxrpc.h>
-#include <rxrpc/transport.h>
-#include <rxrpc/connection.h>
-#include <rxrpc/call.h>
-#include "fsclient.h"
-#include "cmservice.h"
-#include "vnode.h"
-#include "server.h"
-#include "errors.h"
+#include <linux/circ_buf.h>
#include "internal.h"
+#include "afs_fs.h"
-#define FSFETCHSTATUS 132 /* AFS Fetch file status */
-#define FSFETCHDATA 130 /* AFS Fetch file data */
-#define FSGIVEUPCALLBACKS 147 /* AFS Discard callback promises */
-#define FSGETVOLUMEINFO 148 /* AFS Get root volume information */
-#define FSGETROOTVOLUME 151 /* AFS Get root volume name */
-#define FSLOOKUP 161 /* AFS lookup file in directory */
+/*
+ * decode an AFSFid block
+ */
+static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
+{
+ const __be32 *bp = *_bp;
+
+ fid->vid = ntohl(*bp++);
+ fid->vnode = ntohl(*bp++);
+ fid->unique = ntohl(*bp++);
+ *_bp = bp;
+}
-/*****************************************************************************/
/*
- * map afs abort codes to/from Linux error codes
- * - called with call->lock held
+ * decode an AFSFetchStatus block
*/
-static void afs_rxfs_aemap(struct rxrpc_call *call)
+static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
+ struct afs_file_status *status,
+ struct afs_vnode *vnode,
+ afs_dataversion_t *store_version)
{
- switch (call->app_err_state) {
- case RXRPC_ESTATE_LOCAL_ABORT:
- call->app_abort_code = -call->app_errno;
- break;
- case RXRPC_ESTATE_PEER_ABORT:
- call->app_errno = afs_abort_to_error(call->app_abort_code);
- break;
- default:
- break;
+ afs_dataversion_t expected_version;
+ const __be32 *bp = *_bp;
+ umode_t mode;
+ u64 data_version, size;
+ u32 changed = 0; /* becomes non-zero if ctime-type changes seen */
+
+#define EXTRACT(DST) \
+ do { \
+ u32 x = ntohl(*bp++); \
+ changed |= DST - x; \
+ DST = x; \
+ } while (0)
+
+ status->if_version = ntohl(*bp++);
+ EXTRACT(status->type);
+ EXTRACT(status->nlink);
+ size = ntohl(*bp++);
+ data_version = ntohl(*bp++);
+ EXTRACT(status->author);
+ EXTRACT(status->owner);
+ EXTRACT(status->caller_access); /* call ticket dependent */
+ EXTRACT(status->anon_access);
+ EXTRACT(status->mode);
+ EXTRACT(status->parent.vnode);
+ EXTRACT(status->parent.unique);
+ bp++; /* seg size */
+ status->mtime_client = ntohl(*bp++);
+ status->mtime_server = ntohl(*bp++);
+ EXTRACT(status->group);
+ bp++; /* sync counter */
+ data_version |= (u64) ntohl(*bp++) << 32;
+ EXTRACT(status->lock_count);
+ size |= (u64) ntohl(*bp++) << 32;
+ bp++; /* spare 4 */
+ *_bp = bp;
+
+ if (size != status->size) {
+ status->size = size;
+ changed |= true;
+ }
+ status->mode &= S_IALLUGO;
+
+ _debug("vnode time %lx, %lx",
+ status->mtime_client, status->mtime_server);
+
+ if (vnode) {
+ status->parent.vid = vnode->fid.vid;
+ if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
+ _debug("vnode changed");
+ i_size_write(&vnode->vfs_inode, size);
+ vnode->vfs_inode.i_uid = status->owner;
+ vnode->vfs_inode.i_gid = status->group;
+ vnode->vfs_inode.i_version = vnode->fid.unique;
+ vnode->vfs_inode.i_nlink = status->nlink;
+
+ mode = vnode->vfs_inode.i_mode;
+ mode &= ~S_IALLUGO;
+ mode |= status->mode;
+ barrier();
+ vnode->vfs_inode.i_mode = mode;
+ }
+
+ vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server;
+ vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime;
+ vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime;
}
-} /* end afs_rxfs_aemap() */
-/*****************************************************************************/
+ expected_version = status->data_version;
+ if (store_version)
+ expected_version = *store_version;
+
+ if (expected_version != data_version) {
+ status->data_version = data_version;
+ if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
+ _debug("vnode modified %llx on {%x:%u}",
+ (unsigned long long) data_version,
+ vnode->fid.vid, vnode->fid.vnode);
+ set_bit(AFS_VNODE_MODIFIED, &vnode->flags);
+ set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
+ }
+ } else if (store_version) {
+ status->data_version = data_version;
+ }
+}
+
/*
- * get the root volume name from a fileserver
- * - this operation doesn't seem to work correctly in OpenAFS server 1.2.2
+ * decode an AFSCallBack block
*/
-#if 0
-int afs_rxfs_get_root_volume(struct afs_server *server,
- char *buf, size_t *buflen)
+static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode)
{
- struct rxrpc_connection *conn;
- struct rxrpc_call *call;
- struct kvec piov[2];
- size_t sent;
- int ret;
- u32 param[1];
+ const __be32 *bp = *_bp;
- DECLARE_WAITQUEUE(myself, current);
+ vnode->cb_version = ntohl(*bp++);
+ vnode->cb_expiry = ntohl(*bp++);
+ vnode->cb_type = ntohl(*bp++);
+ vnode->cb_expires = vnode->cb_expiry + get_seconds();
+ *_bp = bp;
+}
- kenter("%p,%p,%u",server, buf, *buflen);
+static void xdr_decode_AFSCallBack_raw(const __be32 **_bp,
+ struct afs_callback *cb)
+{
+ const __be32 *bp = *_bp;
- /* get hold of the fileserver connection */
- ret = afs_server_get_fsconn(server, &conn);
- if (ret < 0)
- goto out;
+ cb->version = ntohl(*bp++);
+ cb->expiry = ntohl(*bp++);
+ cb->type = ntohl(*bp++);
+ *_bp = bp;
+}
- /* create a call through that connection */
- ret = rxrpc_create_call(conn, NULL, NULL, afs_rxfs_aemap, &call);
- if (ret < 0) {
- printk("kAFS: Unable to create call: %d\n", ret);
- goto out_put_conn;
+/*
+ * decode an AFSVolSync block
+ */
+static void xdr_decode_AFSVolSync(const __be32 **_bp,
+ struct afs_volsync *volsync)
+{
+ const __be32 *bp = *_bp;
+
+ volsync->creation = ntohl(*bp++);
+ bp++; /* spare2 */
+ bp++; /* spare3 */
+ bp++; /* spare4 */
+ bp++; /* spare5 */
+ bp++; /* spare6 */
+ *_bp = bp;
+}
+
+/*
+ * encode the requested attributes into an AFSStoreStatus block
+ */
+static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
+{
+ __be32 *bp = *_bp;
+ u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0;
+
+ mask = 0;
+ if (attr->ia_valid & ATTR_MTIME) {
+ mask |= AFS_SET_MTIME;
+ mtime = attr->ia_mtime.tv_sec;
}
- call->app_opcode = FSGETROOTVOLUME;
- /* we want to get event notifications from the call */
- add_wait_queue(&call->waitq, &myself);
+ if (attr->ia_valid & ATTR_UID) {
+ mask |= AFS_SET_OWNER;
+ owner = attr->ia_uid;
+ }
- /* marshall the parameters */
- param[0] = htonl(FSGETROOTVOLUME);
-
- piov[0].iov_len = sizeof(param);
- piov[0].iov_base = param;
-
- /* send the parameters to the server */
- ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS,
- 0, &sent);
- if (ret < 0)
- goto abort;
-
- /* wait for the reply to completely arrive */
- for (;;) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (call->app_call_state != RXRPC_CSTATE_CLNT_RCV_REPLY ||
- signal_pending(current))
- break;
- schedule();
+ if (attr->ia_valid & ATTR_GID) {
+ mask |= AFS_SET_GROUP;
+ group = attr->ia_gid;
}
- set_current_state(TASK_RUNNING);
- ret = -EINTR;
- if (signal_pending(current))
- goto abort;
+ if (attr->ia_valid & ATTR_MODE) {
+ mask |= AFS_SET_MODE;
+ mode = attr->ia_mode & S_IALLUGO;
+ }
- switch (call->app_call_state) {
- case RXRPC_CSTATE_ERROR:
- ret = call->app_errno;
- kdebug("Got Error: %d", ret);
- goto out_unwait;
+ *bp++ = htonl(mask);
+ *bp++ = htonl(mtime);
+ *bp++ = htonl(owner);
+ *bp++ = htonl(group);
+ *bp++ = htonl(mode);
+ *bp++ = 0; /* segment size */
+ *_bp = bp;
+}
- case RXRPC_CSTATE_CLNT_GOT_REPLY:
- /* read the reply */
- kdebug("Got Reply: qty=%d", call->app_ready_qty);
+/*
+ * 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;
+}
- ret = -EBADMSG;
- if (call->app_ready_qty <= 4)
- goto abort;
+/*
+ * deliver reply data to an FS.FetchStatus
+ */
+static int afs_deliver_fs_fetch_status(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ struct afs_vnode *vnode = call->reply;
+ const __be32 *bp;
- ret = rxrpc_call_read_data(call, NULL, call->app_ready_qty, 0);
- if (ret < 0)
- goto abort;
+ _enter(",,%u", last);
-#if 0
- /* unmarshall the reply */
- bp = buffer;
- for (loop = 0; loop < 65; loop++)
- entry->name[loop] = ntohl(*bp++);
- entry->name[64] = 0;
+ afs_transfer_reply(call, skb);
+ if (!last)
+ return 0;
- entry->type = ntohl(*bp++);
- entry->num_servers = ntohl(*bp++);
+ if (call->reply_size != call->reply_max)
+ return -EBADMSG;
- for (loop = 0; loop < 8; loop++)
- entry->servers[loop].addr.s_addr = *bp++;
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
+ xdr_decode_AFSCallBack(&bp, vnode);
+ if (call->reply2)
+ xdr_decode_AFSVolSync(&bp, call->reply2);
- for (loop = 0; loop < 8; loop++)
- entry->servers[loop].partition = ntohl(*bp++);
+ _leave(" = 0 [done]");
+ return 0;
+}
- for (loop = 0; loop < 8; loop++)
- entry->servers[loop].flags = ntohl(*bp++);
+/*
+ * FS.FetchStatus operation type
+ */
+static const struct afs_call_type afs_RXFSFetchStatus = {
+ .name = "FS.FetchStatus",
+ .deliver = afs_deliver_fs_fetch_status,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_flat_call_destructor,
+};
- for (loop = 0; loop < 3; loop++)
- entry->volume_ids[loop] = ntohl(*bp++);
+/*
+ * fetch the status information for a file
+ */
+int afs_fs_fetch_file_status(struct afs_server *server,
+ struct key *key,
+ struct afs_vnode *vnode,
+ struct afs_volsync *volsync,
+ const struct afs_wait_mode *wait_mode)
+{
+ struct afs_call *call;
+ __be32 *bp;
- entry->clone_id = ntohl(*bp++);
- entry->flags = ntohl(*bp);
-#endif
+ _enter(",%x,{%x:%u},,",
+ key_serial(key), vnode->fid.vid, vnode->fid.vnode);
- /* success */
- ret = 0;
- goto out_unwait;
+ call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
- default:
- BUG();
- }
+ call->key = key;
+ call->reply = vnode;
+ call->reply2 = volsync;
+ call->service_id = FS_SERVICE;
+ call->port = htons(AFS_FS_PORT);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp[0] = htonl(FSFETCHSTATUS);
+ bp[1] = htonl(vnode->fid.vid);
+ bp[2] = htonl(vnode->fid.vnode);
+ bp[3] = htonl(vnode->fid.unique);
- abort:
- set_current_state(TASK_UNINTERRUPTIBLE);
- rxrpc_call_abort(call, ret);
- schedule();
- out_unwait:
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&call->waitq, &myself);
- rxrpc_put_call(call);
- out_put_conn:
- afs_server_release_fsconn(server, conn);
- out:
- kleave("");
- return ret;
-} /* end afs_rxfs_get_root_volume() */
-#endif
-
-/*****************************************************************************/
-/*
- * get information about a volume
- */
-#if 0
-int afs_rxfs_get_volume_info(struct afs_server *server,
- const char *name,
- struct afs_volume_info *vinfo)
-{
- struct rxrpc_connection *conn;
- struct rxrpc_call *call;
- struct kvec piov[3];
- size_t sent;
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * deliver reply data to an FS.FetchData
+ */
+static int afs_deliver_fs_fetch_data(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ struct afs_vnode *vnode = call->reply;
+ const __be32 *bp;
+ struct page *page;
+ void *buffer;
int ret;
- u32 param[2], *bp, zero;
- DECLARE_WAITQUEUE(myself, current);
+ _enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
- _enter("%p,%s,%p", server, name, vinfo);
+ switch (call->unmarshall) {
+ case 0:
+ call->offset = 0;
+ call->unmarshall++;
+ if (call->operation_ID != FSFETCHDATA64) {
+ call->unmarshall++;
+ goto no_msw;
+ }
- /* get hold of the fileserver connection */
- ret = afs_server_get_fsconn(server, &conn);
- if (ret < 0)
- goto out;
+ /* 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;
+ }
- /* create a call through that connection */
- ret = rxrpc_create_call(conn, NULL, NULL, afs_rxfs_aemap, &call);
- if (ret < 0) {
- printk("kAFS: Unable to create call: %d\n", ret);
- goto out_put_conn;
- }
- call->app_opcode = FSGETVOLUMEINFO;
+ 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) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
- /* we want to get event notifications from the call */
- add_wait_queue(&call->waitq, &myself);
+ call->count = ntohl(call->tmp);
+ _debug("DATA length: %u", call->count);
+ if (call->count > PAGE_SIZE)
+ return -EBADMSG;
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the returned data */
+ case 3:
+ _debug("extract data");
+ if (call->count > 0) {
+ page = call->reply3;
+ buffer = kmap_atomic(page, KM_USER0);
+ ret = afs_extract_data(call, skb, last, buffer,
+ call->count);
+ kunmap_atomic(buffer, KM_USER0);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+ }
- /* marshall the parameters */
- piov[1].iov_len = strlen(name);
- piov[1].iov_base = (char *) name;
-
- zero = 0;
- piov[2].iov_len = (4 - (piov[1].iov_len & 3)) & 3;
- piov[2].iov_base = &zero;
-
- param[0] = htonl(FSGETVOLUMEINFO);
- param[1] = htonl(piov[1].iov_len);
-
- piov[0].iov_len = sizeof(param);
- piov[0].iov_base = param;
-
- /* send the parameters to the server */
- ret = rxrpc_call_write_data(call, 3, piov, RXRPC_LAST_PACKET, GFP_NOFS,
- 0, &sent);
- if (ret < 0)
- goto abort;
-
- /* wait for the reply to completely arrive */
- bp = rxrpc_call_alloc_scratch(call, 64);
-
- ret = rxrpc_call_read_data(call, bp, 64,
- RXRPC_CALL_READ_BLOCK |
- RXRPC_CALL_READ_ALL);
- if (ret < 0) {
- if (ret == -ECONNABORTED) {
- ret = call->app_errno;
- goto out_unwait;
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the metadata */
+ case 4:
+ ret = afs_extract_data(call, skb, last, call->buffer,
+ (21 + 3 + 6) * 4);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
}
- goto abort;
+
+ bp = call->buffer;
+ xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
+ xdr_decode_AFSCallBack(&bp, vnode);
+ if (call->reply2)
+ xdr_decode_AFSVolSync(&bp, call->reply2);
+
+ call->offset = 0;
+ call->unmarshall++;
+
+ case 5:
+ _debug("trailer");
+ if (skb->len != 0)
+ return -EBADMSG;
+ break;
}
- /* unmarshall the reply */
- vinfo->vid = ntohl(*bp++);
- vinfo->type = ntohl(*bp++);
-
- vinfo->type_vids[0] = ntohl(*bp++);
- vinfo->type_vids[1] = ntohl(*bp++);
- vinfo->type_vids[2] = ntohl(*bp++);
- vinfo->type_vids[3] = ntohl(*bp++);
- vinfo->type_vids[4] = ntohl(*bp++);
-
- vinfo->nservers = ntohl(*bp++);
- vinfo->servers[0].addr.s_addr = *bp++;
- vinfo->servers[1].addr.s_addr = *bp++;
- vinfo->servers[2].addr.s_addr = *bp++;
- vinfo->servers[3].addr.s_addr = *bp++;
- vinfo->servers[4].addr.s_addr = *bp++;
- vinfo->servers[5].addr.s_addr = *bp++;
- vinfo->servers[6].addr.s_addr = *bp++;
- vinfo->servers[7].addr.s_addr = *bp++;
-
- ret = -EBADMSG;
- if (vinfo->nservers > 8)
- goto abort;
-
- /* success */
- ret = 0;
-
- out_unwait:
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&call->waitq, &myself);
- rxrpc_put_call(call);
- out_put_conn:
- afs_server_release_fsconn(server, conn);
- out:
- _leave("");
- return ret;
-
- abort:
- set_current_state(TASK_UNINTERRUPTIBLE);
- rxrpc_call_abort(call, ret);
- schedule();
- goto out_unwait;
-
-} /* end afs_rxfs_get_volume_info() */
-#endif
-
-/*****************************************************************************/
+ if (!last)
+ return 0;
+
+ if (call->count < PAGE_SIZE) {
+ _debug("clear");
+ page = call->reply3;
+ buffer = kmap_atomic(page, KM_USER0);
+ memset(buffer + call->count, 0, PAGE_SIZE - call->count);
+ kunmap_atomic(buffer, KM_USER0);
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
/*
- * fetch the status information for a file
+ * FS.FetchData operation type
+ */
+static const struct afs_call_type afs_RXFSFetchData = {
+ .name = "FS.FetchData",
+ .deliver = afs_deliver_fs_fetch_data,
+ .abort_to_error = afs_abort_to_error,
+ .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
*/
-int afs_rxfs_fetch_file_status(struct afs_server *server,
+static int afs_fs_fetch_data64(struct afs_server *server,
+ struct key *key,
struct afs_vnode *vnode,
- struct afs_volsync *volsync)
+ off_t offset, size_t length,
+ struct page *buffer,
+ const struct afs_wait_mode *wait_mode)
{
- struct afs_server_callslot callslot;
- struct rxrpc_call *call;
- struct kvec piov[1];
- size_t sent;
- int ret;
+ struct afs_call *call;
__be32 *bp;
- DECLARE_WAITQUEUE(myself, current);
+ _enter("");
- _enter("%p,{%u,%u,%u}",
- server, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique);
+ ASSERTCMP(length, <, ULONG_MAX);
- /* get hold of the fileserver connection */
- ret = afs_server_request_callslot(server, &callslot);
- if (ret < 0)
- goto out;
+ call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
- /* create a call through that connection */
- ret = rxrpc_create_call(callslot.conn, NULL, NULL, afs_rxfs_aemap,
- &call);
- if (ret < 0) {
- printk("kAFS: Unable to create call: %d\n", ret);
- goto out_put_conn;
- }
- call->app_opcode = FSFETCHSTATUS;
+ 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
+ */
+int afs_fs_fetch_data(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;
+
+ if (upper_32_bits(offset) || upper_32_bits(offset + length))
+ return afs_fs_fetch_data64(server, key, vnode, offset, length,
+ buffer, wait_mode);
- /* we want to get event notifications from the call */
- add_wait_queue(&call->waitq, &myself);
+ _enter("");
+
+ call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (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 = FSFETCHDATA;
/* marshall the parameters */
- bp = rxrpc_call_alloc_scratch(call, 16);
- bp[0] = htonl(FSFETCHSTATUS);
+ bp = call->request;
+ bp[0] = htonl(FSFETCHDATA);
bp[1] = htonl(vnode->fid.vid);
bp[2] = htonl(vnode->fid.vnode);
bp[3] = htonl(vnode->fid.unique);
+ bp[4] = htonl(offset);
+ bp[5] = htonl(length);
- piov[0].iov_len = 16;
- piov[0].iov_base = bp;
-
- /* send the parameters to the server */
- ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS,
- 0, &sent);
- if (ret < 0)
- goto abort;
-
- /* wait for the reply to completely arrive */
- bp = rxrpc_call_alloc_scratch(call, 120);
-
- ret = rxrpc_call_read_data(call, bp, 120,
- RXRPC_CALL_READ_BLOCK |
- RXRPC_CALL_READ_ALL);
- if (ret < 0) {
- if (ret == -ECONNABORTED) {
- ret = call->app_errno;
- goto out_unwait;
- }
- goto abort;
- }
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
- /* unmarshall the reply */
- vnode->status.if_version = ntohl(*bp++);
- vnode->status.type = ntohl(*bp++);
- vnode->status.nlink = ntohl(*bp++);
- vnode->status.size = ntohl(*bp++);
- vnode->status.version = ntohl(*bp++);
- vnode->status.author = ntohl(*bp++);
- vnode->status.owner = ntohl(*bp++);
- vnode->status.caller_access = ntohl(*bp++);
- vnode->status.anon_access = ntohl(*bp++);
- vnode->status.mode = ntohl(*bp++);
- vnode->status.parent.vid = vnode->fid.vid;
- vnode->status.parent.vnode = ntohl(*bp++);
- vnode->status.parent.unique = ntohl(*bp++);
- bp++; /* seg size */
- vnode->status.mtime_client = ntohl(*bp++);
- vnode->status.mtime_server = ntohl(*bp++);
- bp++; /* group */
- bp++; /* sync counter */
- vnode->status.version |= ((unsigned long long) ntohl(*bp++)) << 32;
- bp++; /* spare2 */
- bp++; /* spare3 */
- bp++; /* spare4 */
+/*
+ * deliver reply data to an FS.GiveUpCallBacks
+ */
+static int afs_deliver_fs_give_up_callbacks(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ _enter(",{%u},%d", skb->len, last);
+
+ if (skb->len > 0)
+ return -EBADMSG; /* shouldn't be any reply data */
+ return 0;
+}
+
+/*
+ * FS.GiveUpCallBacks operation type
+ */
+static const struct afs_call_type afs_RXFSGiveUpCallBacks = {
+ .name = "FS.GiveUpCallBacks",
+ .deliver = afs_deliver_fs_give_up_callbacks,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * give up a set of callbacks
+ * - the callbacks are held in the server->cb_break ring
+ */
+int afs_fs_give_up_callbacks(struct afs_server *server,
+ const struct afs_wait_mode *wait_mode)
+{
+ struct afs_call *call;
+ size_t ncallbacks;
+ __be32 *bp, *tp;
+ int loop;
+
+ ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail,
+ ARRAY_SIZE(server->cb_break));
+
+ _enter("{%zu},", ncallbacks);
+
+ if (ncallbacks == 0)
+ return 0;
+ if (ncallbacks > AFSCBMAX)
+ ncallbacks = AFSCBMAX;
- vnode->cb_version = ntohl(*bp++);
- vnode->cb_expiry = ntohl(*bp++);
- vnode->cb_type = ntohl(*bp++);
-
- if (volsync) {
- volsync->creation = ntohl(*bp++);
- bp++; /* spare2 */
- bp++; /* spare3 */
- bp++; /* spare4 */
- bp++; /* spare5 */
- bp++; /* spare6 */
+ _debug("break %zu callbacks", ncallbacks);
+
+ call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks,
+ 12 + ncallbacks * 6 * 4, 0);
+ if (!call)
+ return -ENOMEM;
+
+ call->service_id = FS_SERVICE;
+ call->port = htons(AFS_FS_PORT);
+
+ /* marshall the parameters */
+ bp = call->request;
+ tp = bp + 2 + ncallbacks * 3;
+ *bp++ = htonl(FSGIVEUPCALLBACKS);
+ *bp++ = htonl(ncallbacks);
+ *tp++ = htonl(ncallbacks);
+
+ atomic_sub(ncallbacks, &server->cb_break_n);
+ for (loop = ncallbacks; loop > 0; loop--) {
+ struct afs_callback *cb =
+ &server->cb_break[server->cb_break_tail];
+
+ *bp++ = htonl(cb->fid.vid);
+ *bp++ = htonl(cb->fid.vnode);
+ *bp++ = htonl(cb->fid.unique);
+ *tp++ = htonl(cb->version);
+ *tp++ = htonl(cb->expiry);
+ *tp++ = htonl(cb->type);
+ smp_mb();
+ server->cb_break_tail =
+ (server->cb_break_tail + 1) &
+ (ARRAY_SIZE(server->cb_break) - 1);
}
- /* success */
- ret = 0;
+ ASSERT(ncallbacks > 0);
+ wake_up_nr(&server->cb_break_waitq, ncallbacks);
- out_unwait:
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&call->waitq, &myself);
- rxrpc_put_call(call);
- out_put_conn:
- afs_server_release_callslot(server, &callslot);
- out:
- _leave("");
- return ret;
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
- abort:
- set_current_state(TASK_UNINTERRUPTIBLE);
- rxrpc_call_abort(call, ret);
- schedule();
- goto out_unwait;
-} /* end afs_rxfs_fetch_file_status() */
+/*
+ * deliver reply data to an FS.CreateFile or an FS.MakeDir
+ */
+static int afs_deliver_fs_create_vnode(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ struct afs_vnode *vnode = call->reply;
+ 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_AFSFid(&bp, call->reply2);
+ xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL);
+ xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
+ xdr_decode_AFSCallBack_raw(&bp, call->reply4);
+ /* xdr_decode_AFSVolSync(&bp, call->replyX); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
-/*****************************************************************************/
/*
- * fetch the contents of a file or directory
+ * FS.CreateFile and FS.MakeDir operation type
*/
-int afs_rxfs_fetch_file_data(struct afs_server *server,
- struct afs_vnode *vnode,
- struct afs_rxfs_fetch_descriptor *desc,
- struct afs_volsync *volsync)
+static const struct afs_call_type afs_RXFSCreateXXXX = {
+ .name = "FS.CreateXXXX",
+ .deliver = afs_deliver_fs_create_vnode,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * create a file or make a directory
+ */
+int afs_fs_create(struct afs_server *server,
+ struct key *key,
+ struct afs_vnode *vnode,
+ const char *name,
+ umode_t mode,
+ struct afs_fid *newfid,
+ struct afs_file_status *newstatus,
+ struct afs_callback *newcb,
+ const struct afs_wait_mode *wait_mode)
{
- struct afs_server_callslot callslot;
- struct rxrpc_call *call;
- struct kvec piov[1];
- size_t sent;
- int ret;
+ struct afs_call *call;
+ size_t namesz, reqsz, padsz;
__be32 *bp;
- DECLARE_WAITQUEUE(myself, current);
-
- _enter("%p,{fid={%u,%u,%u},sz=%Zu,of=%lu}",
- server,
- desc->fid.vid,
- desc->fid.vnode,
- desc->fid.unique,
- desc->size,
- desc->offset);
-
- /* get hold of the fileserver connection */
- ret = afs_server_request_callslot(server, &callslot);
- if (ret < 0)
- goto out;
-
- /* create a call through that connection */
- ret = rxrpc_create_call(callslot.conn, NULL, NULL, afs_rxfs_aemap, &call);
- if (ret < 0) {
- printk("kAFS: Unable to create call: %d\n", ret);
- goto out_put_conn;
+ _enter("");
+
+ namesz = strlen(name);
+ padsz = (4 - (namesz & 3)) & 3;
+ reqsz = (5 * 4) + namesz + padsz + (6 * 4);
+
+ call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz,
+ (3 + 21 + 21 + 3 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = key;
+ call->reply = vnode;
+ call->reply2 = newfid;
+ call->reply3 = newstatus;
+ call->reply4 = newcb;
+ call->service_id = FS_SERVICE;
+ call->port = htons(AFS_FS_PORT);
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(namesz);
+ memcpy(bp, name, namesz);
+ bp = (void *) bp + namesz;
+ if (padsz > 0) {
+ memset(bp, 0, padsz);
+ bp = (void *) bp + padsz;
}
- call->app_opcode = FSFETCHDATA;
+ *bp++ = htonl(AFS_SET_MODE);
+ *bp++ = 0; /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = htonl(mode & S_IALLUGO); /* unix mode */
+ *bp++ = 0; /* segment size */
+
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * deliver reply data to an FS.RemoveFile or FS.RemoveDir
+ */
+static int afs_deliver_fs_remove(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ struct afs_vnode *vnode = call->reply;
+ 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_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
+ /* xdr_decode_AFSVolSync(&bp, call->replyX); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.RemoveDir/FS.RemoveFile operation type
+ */
+static const struct afs_call_type afs_RXFSRemoveXXXX = {
+ .name = "FS.RemoveXXXX",
+ .deliver = afs_deliver_fs_remove,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * remove a file or directory
+ */
+int afs_fs_remove(struct afs_server *server,
+ struct key *key,
+ struct afs_vnode *vnode,
+ const char *name,
+ bool isdir,
+ const struct afs_wait_mode *wait_mode)
+{
+ struct afs_call *call;
+ size_t namesz, reqsz, padsz;
+ __be32 *bp;
- /* we want to get event notifications from the call */
- add_wait_queue(&call->waitq, &myself);
+ _enter("");
+
+ namesz = strlen(name);
+ padsz = (4 - (namesz & 3)) & 3;
+ reqsz = (5 * 4) + namesz + padsz;
+
+ call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 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 = rxrpc_call_alloc_scratch(call, 24);
- bp[0] = htonl(FSFETCHDATA);
- bp[1] = htonl(desc->fid.vid);
- bp[2] = htonl(desc->fid.vnode);
- bp[3] = htonl(desc->fid.unique);
- bp[4] = htonl(desc->offset);
- bp[5] = htonl(desc->size);
-
- piov[0].iov_len = 24;
- piov[0].iov_base = bp;
-
- /* send the parameters to the server */
- ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS,
- 0, &sent);
- if (ret < 0)
- goto abort;
-
- /* wait for the data count to arrive */
- ret = rxrpc_call_read_data(call, bp, 4, RXRPC_CALL_READ_BLOCK);
- if (ret < 0)
- goto read_failed;
-
- desc->actual = ntohl(bp[0]);
- if (desc->actual != desc->size) {
- ret = -EBADMSG;
- goto abort;
+ bp = call->request;
+ *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(namesz);
+ memcpy(bp, name, namesz);
+ bp = (void *) bp + namesz;
+ if (padsz > 0) {
+ memset(bp, 0, padsz);
+ bp = (void *) bp + padsz;
}
- /* call the app to read the actual data */
- rxrpc_call_reset_scratch(call);
-
- ret = rxrpc_call_read_data(call, desc->buffer, desc->actual,
- RXRPC_CALL_READ_BLOCK);
- if (ret < 0)
- goto read_failed;
-
- /* wait for the rest of the reply to completely arrive */
- rxrpc_call_reset_scratch(call);
- bp = rxrpc_call_alloc_scratch(call, 120);
-
- ret = rxrpc_call_read_data(call, bp, 120,
- RXRPC_CALL_READ_BLOCK |
- RXRPC_CALL_READ_ALL);
- if (ret < 0)
- goto read_failed;
-
- /* unmarshall the reply */
- vnode->status.if_version = ntohl(*bp++);
- vnode->status.type = ntohl(*bp++);
- vnode->status.nlink = ntohl(*bp++);
- vnode->status.size = ntohl(*bp++);
- vnode->status.version = ntohl(*bp++);
- vnode->status.author = ntohl(*bp++);
- vnode->status.owner = ntohl(*bp++);
- vnode->status.caller_access = ntohl(*bp++);
- vnode->status.anon_access = ntohl(*bp++);
- vnode->status.mode = ntohl(*bp++);
- vnode->status.parent.vid = desc->fid.vid;
- vnode->status.parent.vnode = ntohl(*bp++);
- vnode->status.parent.unique = ntohl(*bp++);
- bp++; /* seg size */
- vnode->status.mtime_client = ntohl(*bp++);
- vnode->status.mtime_server = ntohl(*bp++);
- bp++; /* group */
- bp++; /* sync counter */
- vnode->status.version |= ((unsigned long long) ntohl(*bp++)) << 32;
- bp++; /* spare2 */
- bp++; /* spare3 */
- bp++; /* spare4 */
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * deliver reply data to an FS.Link
+ */
+static int afs_deliver_fs_link(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ struct afs_vnode *dvnode = call->reply, *vnode = call->reply2;
+ 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_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
+ xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL);
+ /* xdr_decode_AFSVolSync(&bp, call->replyX); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.Link operation type
+ */
+static const struct afs_call_type afs_RXFSLink = {
+ .name = "FS.Link",
+ .deliver = afs_deliver_fs_link,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * make a hard link
+ */
+int afs_fs_link(struct afs_server *server,
+ struct key *key,
+ struct afs_vnode *dvnode,
+ struct afs_vnode *vnode,
+ const char *name,
+ const struct afs_wait_mode *wait_mode)
+{
+ struct afs_call *call;
+ size_t namesz, reqsz, padsz;
+ __be32 *bp;
- vnode->cb_version = ntohl(*bp++);
- vnode->cb_expiry = ntohl(*bp++);
- vnode->cb_type = ntohl(*bp++);
-
- if (volsync) {
- volsync->creation = ntohl(*bp++);
- bp++; /* spare2 */
- bp++; /* spare3 */
- bp++; /* spare4 */
- bp++; /* spare5 */
- bp++; /* spare6 */
+ _enter("");
+
+ namesz = strlen(name);
+ padsz = (4 - (namesz & 3)) & 3;
+ reqsz = (5 * 4) + namesz + padsz + (3 * 4);
+
+ call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = key;
+ call->reply = dvnode;
+ call->reply2 = vnode;
+ call->service_id = FS_SERVICE;
+ call->port = htons(AFS_FS_PORT);
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSLINK);
+ *bp++ = htonl(dvnode->fid.vid);
+ *bp++ = htonl(dvnode->fid.vnode);
+ *bp++ = htonl(dvnode->fid.unique);
+ *bp++ = htonl(namesz);
+ memcpy(bp, name, namesz);
+ bp = (void *) bp + namesz;
+ if (padsz > 0) {
+ memset(bp, 0, padsz);
+ bp = (void *) bp + padsz;
}
+ *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);
+}
+
+/*
+ * deliver reply data to an FS.Symlink
+ */
+static int afs_deliver_fs_symlink(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ struct afs_vnode *vnode = call->reply;
+ const __be32 *bp;
+
+ _enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
- /* success */
- ret = 0;
-
- out_unwait:
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&call->waitq,&myself);
- rxrpc_put_call(call);
- out_put_conn:
- afs_server_release_callslot(server, &callslot);
- out:
- _leave(" = %d", ret);
- return ret;
-
- read_failed:
- if (ret == -ECONNABORTED) {
- ret = call->app_errno;
- goto out_unwait;
+ 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_AFSFid(&bp, call->reply2);
+ xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL);
+ xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
+ /* xdr_decode_AFSVolSync(&bp, call->replyX); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.Symlink operation type
+ */
+static const struct afs_call_type afs_RXFSSymlink = {
+ .name = "FS.Symlink",
+ .deliver = afs_deliver_fs_symlink,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * create a symbolic link
+ */
+int afs_fs_symlink(struct afs_server *server,
+ struct key *key,
+ struct afs_vnode *vnode,
+ const char *name,
+ const char *contents,
+ struct afs_fid *newfid,
+ struct afs_file_status *newstatus,
+ const struct afs_wait_mode *wait_mode)
+{
+ struct afs_call *call;
+ size_t namesz, reqsz, padsz, c_namesz, c_padsz;
+ __be32 *bp;
+
+ _enter("");
+
+ namesz = strlen(name);
+ padsz = (4 - (namesz & 3)) & 3;
+
+ c_namesz = strlen(contents);
+ c_padsz = (4 - (c_namesz & 3)) & 3;
+
+ reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
+
+ call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz,
+ (3 + 21 + 21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = key;
+ call->reply = vnode;
+ call->reply2 = newfid;
+ call->reply3 = newstatus;
+ call->service_id = FS_SERVICE;
+ call->port = htons(AFS_FS_PORT);
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSSYMLINK);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(namesz);
+ memcpy(bp, name, namesz);
+ bp = (void *) bp + namesz;
+ if (padsz > 0) {
+ memset(bp, 0, padsz);
+ bp = (void *) bp + padsz;
}
+ *bp++ = htonl(c_namesz);
+ memcpy(bp, contents, c_namesz);
+ bp = (void *) bp + c_namesz;
+ if (c_padsz > 0) {
+ memset(bp, 0, c_padsz);
+ bp = (void *) bp + c_padsz;
+ }
+ *bp++ = htonl(AFS_SET_MODE);
+ *bp++ = 0; /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = htonl(S_IRWXUGO); /* unix mode */
+ *bp++ = 0; /* segment size */
+
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * deliver reply data to an FS.Rename
+ */
+static int afs_deliver_fs_rename(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2;
+ const __be32 *bp;
+
+ _enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
- abort:
- set_current_state(TASK_UNINTERRUPTIBLE);
- rxrpc_call_abort(call, ret);
- schedule();
- goto out_unwait;
+ afs_transfer_reply(call, skb);
+ if (!last)
+ return 0;
-} /* end afs_rxfs_fetch_file_data() */
+ if (call->reply_size != call->reply_max)
+ return -EBADMSG;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL);
+ if (new_dvnode != orig_dvnode)
+ xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode,
+ NULL);
+ /* xdr_decode_AFSVolSync(&bp, call->replyX); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.Rename operation type
+ */
+static const struct afs_call_type afs_RXFSRename = {
+ .name = "FS.Rename",
+ .deliver = afs_deliver_fs_rename,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_flat_call_destructor,
+};
-/*****************************************************************************/
/*
- * ask the AFS fileserver to discard a callback request on a file
+ * create a symbolic link
*/
-int afs_rxfs_give_up_callback(struct afs_server *server,
- struct afs_vnode *vnode)
+int afs_fs_rename(struct afs_server *server,
+ struct key *key,
+ struct afs_vnode *orig_dvnode,
+ const char *orig_name,
+ struct afs_vnode *new_dvnode,
+ const char *new_name,
+ const struct afs_wait_mode *wait_mode)
{
- struct afs_server_callslot callslot;
- struct rxrpc_call *call;
- struct kvec piov[1];
- size_t sent;
- int ret;
+ struct afs_call *call;
+ size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
__be32 *bp;
- DECLARE_WAITQUEUE(myself, current);
+ _enter("");
+
+ o_namesz = strlen(orig_name);
+ o_padsz = (4 - (o_namesz & 3)) & 3;
+
+ n_namesz = strlen(new_name);
+ n_padsz = (4 - (n_namesz & 3)) & 3;
- _enter("%p,{%u,%u,%u}",
- server, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique);
+ reqsz = (4 * 4) +
+ 4 + o_namesz + o_padsz +
+ (3 * 4) +
+ 4 + n_namesz + n_padsz;
- /* get hold of the fileserver connection */
- ret = afs_server_request_callslot(server, &callslot);
- if (ret < 0)
- goto out;
+ call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
- /* create a call through that connection */
- ret = rxrpc_create_call(callslot.conn, NULL, NULL, afs_rxfs_aemap, &call);
- if (ret < 0) {
- printk("kAFS: Unable to create call: %d\n", ret);
- goto out_put_conn;
+ call->key = key;
+ call->reply = orig_dvnode;
+ call->reply2 = new_dvnode;
+ call->service_id = FS_SERVICE;
+ call->port = htons(AFS_FS_PORT);
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSRENAME);
+ *bp++ = htonl(orig_dvnode->fid.vid);
+ *bp++ = htonl(orig_dvnode->fid.vnode);
+ *bp++ = htonl(orig_dvnode->fid.unique);
+ *bp++ = htonl(o_namesz);
+ memcpy(bp, orig_name, o_namesz);
+ bp = (void *) bp + o_namesz;
+ if (o_padsz > 0) {
+ memset(bp, 0, o_padsz);
+ bp = (void *) bp + o_padsz;
+ }
+
+ *bp++ = htonl(new_dvnode->fid.vid);
+ *bp++ = htonl(new_dvnode->fid.vnode);
+ *bp++ = htonl(new_dvnode->fid.unique);
+ *bp++ = htonl(n_namesz);
+ memcpy(bp, new_name, n_namesz);
+ bp = (void *) bp + n_namesz;
+ if (n_padsz > 0) {
+ memset(bp, 0, n_padsz);
+ bp = (void *) bp + n_padsz;
}
- call->app_opcode = FSGIVEUPCALLBACKS;
- /* we want to get event notifications from the call */
- add_wait_queue(&call->waitq, &myself);
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * deliver reply data to an FS.StoreData
+ */
+static int afs_deliver_fs_store_data(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ struct afs_vnode *vnode = call->reply;
+ const __be32 *bp;
+
+ _enter(",,%u", last);
+
+ afs_transfer_reply(call, skb);
+ if (!last) {
+ _leave(" = 0 [more]");
+ return 0;
+ }
+
+ if (call->reply_size != call->reply_max) {
+ _leave(" = -EBADMSG [%u != %u]",
+ call->reply_size, call->reply_max);
+ return -EBADMSG;
+ }
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode,
+ &call->store_version);
+ /* xdr_decode_AFSVolSync(&bp, call->replyX); */
+
+ afs_pages_written_back(vnode, call);
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.StoreData operation type
+ */
+static const struct afs_call_type afs_RXFSStoreData = {
+ .name = "FS.StoreData",
+ .deliver = afs_deliver_fs_store_data,
+ .abort_to_error = afs_abort_to_error,
+ .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 = rxrpc_call_alloc_scratch(call, (1 + 4 + 4) * 4);
+ bp = call->request;
+ *bp++ = htonl(FSSTOREDATA64);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
- piov[0].iov_len = (1 + 4 + 4) * 4;
- piov[0].iov_base = bp;
+ *bp++ = 0; /* mask */
+ *bp++ = 0; /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = 0; /* unix mode */
+ *bp++ = 0; /* segment size */
- *bp++ = htonl(FSGIVEUPCALLBACKS);
- *bp++ = htonl(1);
+ *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
+ */
+int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb,
+ pgoff_t first, pgoff_t last,
+ unsigned offset, unsigned to,
+ const struct afs_wait_mode *wait_mode)
+{
+ struct afs_vnode *vnode = wb->vnode;
+ struct afs_call *call;
+ loff_t size, pos, i_size;
+ __be32 *bp;
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode);
+
+ size = to - offset;
+ if (first != last)
+ size += (loff_t)(last - first) << PAGE_SHIFT;
+ pos = (loff_t)first << PAGE_SHIFT;
+ pos += offset;
+
+ i_size = i_size_read(&vnode->vfs_inode);
+ if (pos + size > i_size)
+ i_size = size + pos;
+
+ _debug("size %llx, at %llx, i_size %llx",
+ (unsigned long long) size, (unsigned long long) pos,
+ (unsigned long long) i_size);
+
+ 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,
+ (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(FSSTOREDATA);
*bp++ = htonl(vnode->fid.vid);
*bp++ = htonl(vnode->fid.vnode);
*bp++ = htonl(vnode->fid.unique);
- *bp++ = htonl(1);
- *bp++ = htonl(vnode->cb_version);
- *bp++ = htonl(vnode->cb_expiry);
- *bp++ = htonl(vnode->cb_type);
-
- /* send the parameters to the server */
- ret = rxrpc_call_write_data(call, 1, piov, RXRPC_LAST_PACKET, GFP_NOFS,
- 0, &sent);
- if (ret < 0)
- goto abort;
-
- /* wait for the reply to completely arrive */
- for (;;) {
- set_current_state(TASK_INTERRUPTIBLE);
- if (call->app_call_state != RXRPC_CSTATE_CLNT_RCV_REPLY ||
- signal_pending(current))
- break;
- schedule();
- }
- set_current_state(TASK_RUNNING);
- ret = -EINTR;
- if (signal_pending(current))
- goto abort;
+ *bp++ = 0; /* mask */
+ *bp++ = 0; /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = 0; /* unix mode */
+ *bp++ = 0; /* segment size */
+
+ *bp++ = htonl(pos);
+ *bp++ = htonl(size);
+ *bp++ = htonl(i_size);
+
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
+
+/*
+ * deliver reply data to an FS.StoreStatus
+ */
+static int afs_deliver_fs_store_status(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ afs_dataversion_t *store_version;
+ struct afs_vnode *vnode = call->reply;
+ const __be32 *bp;
- switch (call->app_call_state) {
- case RXRPC_CSTATE_ERROR:
- ret = call->app_errno;
- goto out_unwait;
+ _enter(",,%u", last);
- case RXRPC_CSTATE_CLNT_GOT_REPLY:
- ret = 0;
- goto out_unwait;
+ afs_transfer_reply(call, skb);
+ if (!last) {
+ _leave(" = 0 [more]");
+ return 0;
+ }
- default:
- BUG();
+ if (call->reply_size != call->reply_max) {
+ _leave(" = -EBADMSG [%u != %u]",
+ call->reply_size, call->reply_max);
+ return -EBADMSG;
}
- out_unwait:
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&call->waitq, &myself);
- rxrpc_put_call(call);
- out_put_conn:
- afs_server_release_callslot(server, &callslot);
- out:
- _leave("");
- return ret;
-
- abort:
- set_current_state(TASK_UNINTERRUPTIBLE);
- rxrpc_call_abort(call, ret);
- schedule();
- goto out_unwait;
-} /* end afs_rxfs_give_up_callback() */
-
-/*****************************************************************************/
-/*
- * look a filename up in a directory
- * - this operation doesn't seem to work correctly in OpenAFS server 1.2.2
- */
-#if 0
-int afs_rxfs_lookup(struct afs_server *server,
- struct afs_vnode *dir,
- const char *filename,
- struct afs_vnode *vnode,
- struct afs_volsync *volsync)
+ /* unmarshall the reply once we've received all of it */
+ store_version = NULL;
+ if (call->operation_ID == FSSTOREDATA)
+ store_version = &call->store_version;
+
+ bp = call->buffer;
+ xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version);
+ /* xdr_decode_AFSVolSync(&bp, call->replyX); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.StoreStatus operation type
+ */
+static const struct afs_call_type afs_RXFSStoreStatus = {
+ .name = "FS.StoreStatus",
+ .deliver = afs_deliver_fs_store_status,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_flat_call_destructor,
+};
+
+static const struct afs_call_type afs_RXFSStoreData_as_Status = {
+ .name = "FS.StoreData",
+ .deliver = afs_deliver_fs_store_status,
+ .abort_to_error = afs_abort_to_error,
+ .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 rxrpc_connection *conn;
- struct rxrpc_call *call;
- struct kvec piov[3];
- size_t sent;
- int ret;
- u32 *bp, zero;
+ struct afs_call *call;
+ __be32 *bp;
- DECLARE_WAITQUEUE(myself, current);
+ _enter(",%x,{%x:%u},,",
+ key_serial(key), vnode->fid.vid, vnode->fid.vnode);
- kenter("%p,{%u,%u,%u},%s",
- server, fid->vid, fid->vnode, fid->unique, filename);
+ ASSERT(attr->ia_valid & ATTR_SIZE);
- /* get hold of the fileserver connection */
- ret = afs_server_get_fsconn(server, &conn);
- if (ret < 0)
- goto out;
+ call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status,
+ (4 + 6 + 3 * 2) * 4,
+ (21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
- /* create a call through that connection */
- ret = rxrpc_create_call(conn, NULL, NULL, afs_rxfs_aemap, &call);
- if (ret < 0) {
- printk("kAFS: Unable to create call: %d\n", ret);
- goto out_put_conn;
- }
- call->app_opcode = FSLOOKUP;
+ 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
+ */
+static int afs_fs_setattr_size(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);
+ 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,
+ (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(FSSTOREDATA);
+ *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; /* size of write */
+ *bp++ = htonl(attr->ia_size); /* new file length */
+
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
- /* we want to get event notifications from the call */
- add_wait_queue(&call->waitq,&myself);
+/*
+ * set the attributes on a file, using FS.StoreData if there's a change in file
+ * size, and FS.StoreStatus otherwise
+ */
+int afs_fs_setattr(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;
+
+ if (attr->ia_valid & ATTR_SIZE)
+ return afs_fs_setattr_size(server, key, vnode, attr,
+ wait_mode);
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(key), vnode->fid.vid, vnode->fid.vnode);
+
+ call = afs_alloc_flat_call(&afs_RXFSStoreStatus,
+ (4 + 6) * 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->operation_ID = FSSTORESTATUS;
/* marshall the parameters */
- bp = rxrpc_call_alloc_scratch(call, 20);
-
- zero = 0;
-
- piov[0].iov_len = 20;
- piov[0].iov_base = bp;
- piov[1].iov_len = strlen(filename);
- piov[1].iov_base = (char *) filename;
- piov[2].iov_len = (4 - (piov[1].iov_len & 3)) & 3;
- piov[2].iov_base = &zero;
-
- *bp++ = htonl(FSLOOKUP);
- *bp++ = htonl(dirfid->vid);
- *bp++ = htonl(dirfid->vnode);
- *bp++ = htonl(dirfid->unique);
- *bp++ = htonl(piov[1].iov_len);
-
- /* send the parameters to the server */
- ret = rxrpc_call_write_data(call, 3, piov, RXRPC_LAST_PACKET, GFP_NOFS,
- 0, &sent);
- if (ret < 0)
- goto abort;
-
- /* wait for the reply to completely arrive */
- bp = rxrpc_call_alloc_scratch(call, 220);
-
- ret = rxrpc_call_read_data(call, bp, 220,
- RXRPC_CALL_READ_BLOCK |
- RXRPC_CALL_READ_ALL);
- if (ret < 0) {
- if (ret == -ECONNABORTED) {
- ret = call->app_errno;
- goto out_unwait;
+ bp = call->request;
+ *bp++ = htonl(FSSTORESTATUS);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+
+ xdr_encode_AFS_StoreStatus(&bp, attr);
+
+ 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;
+ }
}
- goto abort;
+
+ 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;
}
- /* unmarshall the reply */
- fid->vid = ntohl(*bp++);
- fid->vnode = ntohl(*bp++);
- fid->unique = ntohl(*bp++);
+ if (!last)
+ return 0;
- vnode->status.if_version = ntohl(*bp++);
- vnode->status.type = ntohl(*bp++);
- vnode->status.nlink = ntohl(*bp++);
- vnode->status.size = ntohl(*bp++);
- vnode->status.version = ntohl(*bp++);
- vnode->status.author = ntohl(*bp++);
- vnode->status.owner = ntohl(*bp++);
- vnode->status.caller_access = ntohl(*bp++);
- vnode->status.anon_access = ntohl(*bp++);
- vnode->status.mode = ntohl(*bp++);
- vnode->status.parent.vid = dirfid->vid;
- vnode->status.parent.vnode = ntohl(*bp++);
- vnode->status.parent.unique = ntohl(*bp++);
- bp++; /* seg size */
- vnode->status.mtime_client = ntohl(*bp++);
- vnode->status.mtime_server = ntohl(*bp++);
- bp++; /* group */
- bp++; /* sync counter */
- vnode->status.version |= ((unsigned long long) ntohl(*bp++)) << 32;
- bp++; /* spare2 */
- bp++; /* spare3 */
- bp++; /* spare4 */
+ _leave(" = 0 [done]");
+ return 0;
+}
- dir->status.if_version = ntohl(*bp++);
- dir->status.type = ntohl(*bp++);
- dir->status.nlink = ntohl(*bp++);
- dir->status.size = ntohl(*bp++);
- dir->status.version = ntohl(*bp++);
- dir->status.author = ntohl(*bp++);
- dir->status.owner = ntohl(*bp++);
- dir->status.caller_access = ntohl(*bp++);
- dir->status.anon_access = ntohl(*bp++);
- dir->status.mode = ntohl(*bp++);
- dir->status.parent.vid = dirfid->vid;
- dir->status.parent.vnode = ntohl(*bp++);
- dir->status.parent.unique = ntohl(*bp++);
- bp++; /* seg size */
- dir->status.mtime_client = ntohl(*bp++);
- dir->status.mtime_server = ntohl(*bp++);
- bp++; /* group */
- bp++; /* sync counter */
- dir->status.version |= ((unsigned long long) ntohl(*bp++)) << 32;
- bp++; /* spare2 */
- bp++; /* spare3 */
- bp++; /* spare4 */
+/*
+ * 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);
+}
- callback->fid = *fid;
- callback->version = ntohl(*bp++);
- callback->expiry = ntohl(*bp++);
- callback->type = ntohl(*bp++);
-
- if (volsync) {
- volsync->creation = ntohl(*bp++);
- bp++; /* spare2 */
- bp++; /* spare3 */
- bp++; /* spare4 */
- bp++; /* spare5 */
- bp++; /* spare6 */
+/*
+ * 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;
}
- /* success */
- ret = 0;
-
- out_unwait:
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&call->waitq, &myself);
- rxrpc_put_call(call);
- out_put_conn:
- afs_server_release_fsconn(server, conn);
- out:
- kleave("");
- return ret;
-
- abort:
- set_current_state(TASK_UNINTERRUPTIBLE);
- rxrpc_call_abort(call, ret);
- schedule();
- goto out_unwait;
-} /* end afs_rxfs_lookup() */
-#endif
+ 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