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-rw-r--r--fs/afs/fsclient.c837
1 files changed, 837 insertions, 0 deletions
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
new file mode 100644
index 000000000000..61bc371532ab
--- /dev/null
+++ b/fs/afs/fsclient.c
@@ -0,0 +1,837 @@
+/* fsclient.c: AFS File Server client stubs
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#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 "internal.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 */
+
+/*****************************************************************************/
+/*
+ * map afs abort codes to/from Linux error codes
+ * - called with call->lock held
+ */
+static void afs_rxfs_aemap(struct rxrpc_call *call)
+{
+ 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;
+ }
+} /* end afs_rxfs_aemap() */
+
+/*****************************************************************************/
+/*
+ * get the root volume name from a fileserver
+ * - this operation doesn't seem to work correctly in OpenAFS server 1.2.2
+ */
+#if 0
+int afs_rxfs_get_root_volume(struct afs_server *server,
+ char *buf, size_t *buflen)
+{
+ struct rxrpc_connection *conn;
+ struct rxrpc_call *call;
+ struct kvec piov[2];
+ size_t sent;
+ int ret;
+ u32 param[1];
+
+ DECLARE_WAITQUEUE(myself, current);
+
+ kenter("%p,%p,%u",server, buf, *buflen);
+
+ /* get hold of the fileserver connection */
+ ret = afs_server_get_fsconn(server, &conn);
+ if (ret < 0)
+ goto out;
+
+ /* 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 = FSGETROOTVOLUME;
+
+ /* we want to get event notifications from the call */
+ add_wait_queue(&call->waitq, &myself);
+
+ /* 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();
+ }
+ set_current_state(TASK_RUNNING);
+
+ ret = -EINTR;
+ if (signal_pending(current))
+ goto abort;
+
+ switch (call->app_call_state) {
+ case RXRPC_CSTATE_ERROR:
+ ret = call->app_errno;
+ kdebug("Got Error: %d", ret);
+ goto out_unwait;
+
+ case RXRPC_CSTATE_CLNT_GOT_REPLY:
+ /* read the reply */
+ kdebug("Got Reply: qty=%d", call->app_ready_qty);
+
+ ret = -EBADMSG;
+ if (call->app_ready_qty <= 4)
+ goto abort;
+
+ ret = rxrpc_call_read_data(call, NULL, call->app_ready_qty, 0);
+ if (ret < 0)
+ goto abort;
+
+#if 0
+ /* unmarshall the reply */
+ bp = buffer;
+ for (loop = 0; loop < 65; loop++)
+ entry->name[loop] = ntohl(*bp++);
+ entry->name[64] = 0;
+
+ entry->type = ntohl(*bp++);
+ entry->num_servers = ntohl(*bp++);
+
+ for (loop = 0; loop < 8; loop++)
+ entry->servers[loop].addr.s_addr = *bp++;
+
+ for (loop = 0; loop < 8; loop++)
+ entry->servers[loop].partition = ntohl(*bp++);
+
+ for (loop = 0; loop < 8; loop++)
+ entry->servers[loop].flags = ntohl(*bp++);
+
+ for (loop = 0; loop < 3; loop++)
+ entry->volume_ids[loop] = ntohl(*bp++);
+
+ entry->clone_id = ntohl(*bp++);
+ entry->flags = ntohl(*bp);
+#endif
+
+ /* success */
+ ret = 0;
+ goto out_unwait;
+
+ default:
+ BUG();
+ }
+
+ 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;
+ int ret;
+ u32 param[2], *bp, zero;
+
+ DECLARE_WAITQUEUE(myself, current);
+
+ _enter("%p,%s,%p", server, name, vinfo);
+
+ /* get hold of the fileserver connection */
+ ret = afs_server_get_fsconn(server, &conn);
+ if (ret < 0)
+ goto out;
+
+ /* 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;
+
+ /* we want to get event notifications from the call */
+ add_wait_queue(&call->waitq, &myself);
+
+ /* 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;
+ }
+ goto abort;
+ }
+
+ /* 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
+
+/*****************************************************************************/
+/*
+ * fetch the status information for a file
+ */
+int afs_rxfs_fetch_file_status(struct afs_server *server,
+ struct afs_vnode *vnode,
+ struct afs_volsync *volsync)
+{
+ struct afs_server_callslot callslot;
+ struct rxrpc_call *call;
+ struct kvec piov[1];
+ size_t sent;
+ int ret;
+ __be32 *bp;
+
+ DECLARE_WAITQUEUE(myself, current);
+
+ _enter("%p,{%u,%u,%u}",
+ server, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique);
+
+ /* 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;
+ }
+ call->app_opcode = FSFETCHSTATUS;
+
+ /* we want to get event notifications from the call */
+ add_wait_queue(&call->waitq, &myself);
+
+ /* marshall the parameters */
+ bp = rxrpc_call_alloc_scratch(call, 16);
+ bp[0] = htonl(FSFETCHSTATUS);
+ bp[1] = htonl(vnode->fid.vid);
+ bp[2] = htonl(vnode->fid.vnode);
+ bp[3] = htonl(vnode->fid.unique);
+
+ 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;
+ }
+
+ /* 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 */
+
+ 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 */
+ }
+
+ /* 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("");
+ return ret;
+
+ abort:
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ rxrpc_call_abort(call, ret);
+ schedule();
+ goto out_unwait;
+} /* end afs_rxfs_fetch_file_status() */
+
+/*****************************************************************************/
+/*
+ * fetch the contents of a file or directory
+ */
+int afs_rxfs_fetch_file_data(struct afs_server *server,
+ struct afs_vnode *vnode,
+ struct afs_rxfs_fetch_descriptor *desc,
+ struct afs_volsync *volsync)
+{
+ struct afs_server_callslot callslot;
+ struct rxrpc_call *call;
+ struct kvec piov[1];
+ size_t sent;
+ int ret;
+ __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;
+ }
+ call->app_opcode = FSFETCHDATA;
+
+ /* we want to get event notifications from the call */
+ add_wait_queue(&call->waitq, &myself);
+
+ /* 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;
+ }
+
+ /* 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 */
+
+ 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 */
+ }
+
+ /* 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;
+ }
+
+ abort:
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ rxrpc_call_abort(call, ret);
+ schedule();
+ goto out_unwait;
+
+} /* end afs_rxfs_fetch_file_data() */
+
+/*****************************************************************************/
+/*
+ * ask the AFS fileserver to discard a callback request on a file
+ */
+int afs_rxfs_give_up_callback(struct afs_server *server,
+ struct afs_vnode *vnode)
+{
+ struct afs_server_callslot callslot;
+ struct rxrpc_call *call;
+ struct kvec piov[1];
+ size_t sent;
+ int ret;
+ __be32 *bp;
+
+ DECLARE_WAITQUEUE(myself, current);
+
+ _enter("%p,{%u,%u,%u}",
+ server, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique);
+
+ /* 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;
+ }
+ call->app_opcode = FSGIVEUPCALLBACKS;
+
+ /* we want to get event notifications from the call */
+ add_wait_queue(&call->waitq, &myself);
+
+ /* marshall the parameters */
+ bp = rxrpc_call_alloc_scratch(call, (1 + 4 + 4) * 4);
+
+ piov[0].iov_len = (1 + 4 + 4) * 4;
+ piov[0].iov_base = bp;
+
+ *bp++ = htonl(FSGIVEUPCALLBACKS);
+ *bp++ = htonl(1);
+ *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;
+
+ switch (call->app_call_state) {
+ case RXRPC_CSTATE_ERROR:
+ ret = call->app_errno;
+ goto out_unwait;
+
+ case RXRPC_CSTATE_CLNT_GOT_REPLY:
+ ret = 0;
+ goto out_unwait;
+
+ default:
+ BUG();
+ }
+
+ 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)
+{
+ struct rxrpc_connection *conn;
+ struct rxrpc_call *call;
+ struct kvec piov[3];
+ size_t sent;
+ int ret;
+ u32 *bp, zero;
+
+ DECLARE_WAITQUEUE(myself, current);
+
+ kenter("%p,{%u,%u,%u},%s",
+ server, fid->vid, fid->vnode, fid->unique, filename);
+
+ /* get hold of the fileserver connection */
+ ret = afs_server_get_fsconn(server, &conn);
+ if (ret < 0)
+ goto out;
+
+ /* 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;
+
+ /* we want to get event notifications from the call */
+ add_wait_queue(&call->waitq,&myself);
+
+ /* 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;
+ }
+ goto abort;
+ }
+
+ /* unmarshall the reply */
+ fid->vid = ntohl(*bp++);
+ fid->vnode = ntohl(*bp++);
+ fid->unique = ntohl(*bp++);
+
+ 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 */
+
+ 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 */
+
+ 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 */
+ }
+
+ /* 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
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 08:39:29 +0000