v4.19.13 snapshot.
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
new file mode 100644
index 0000000..50929cb
--- /dev/null
+++ b/fs/afs/fsclient.c
@@ -0,0 +1,2352 @@
+/* AFS File Server client stubs
+ *
+ * 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
+ * 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/slab.h>
+#include <linux/sched.h>
+#include <linux/circ_buf.h>
+#include <linux/iversion.h>
+#include "internal.h"
+#include "afs_fs.h"
+#include "xdr_fs.h"
+
+static const struct afs_fid afs_zero_fid;
+
+/*
+ * We need somewhere to discard into in case the server helpfully returns more
+ * than we asked for in FS.FetchData{,64}.
+ */
+static u8 afs_discard_buffer[64];
+
+static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
+{
+ call->cbi = afs_get_cb_interest(cbi);
+}
+
+/*
+ * 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;
+}
+
+/*
+ * Dump a bad file status record.
+ */
+static void xdr_dump_bad(const __be32 *bp)
+{
+ __be32 x[4];
+ int i;
+
+ pr_notice("AFS XDR: Bad status record\n");
+ for (i = 0; i < 5 * 4 * 4; i += 16) {
+ memcpy(x, bp, 16);
+ bp += 4;
+ pr_notice("%03x: %08x %08x %08x %08x\n",
+ i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
+ }
+
+ memcpy(x, bp, 4);
+ pr_notice("0x50: %08x\n", ntohl(x[0]));
+}
+
+/*
+ * Update the core inode struct from a returned status record.
+ */
+void afs_update_inode_from_status(struct afs_vnode *vnode,
+ struct afs_file_status *status,
+ const afs_dataversion_t *expected_version,
+ u8 flags)
+{
+ struct timespec64 t;
+ umode_t mode;
+
+ t.tv_sec = status->mtime_client;
+ t.tv_nsec = 0;
+ vnode->vfs_inode.i_ctime = t;
+ vnode->vfs_inode.i_mtime = t;
+ vnode->vfs_inode.i_atime = t;
+
+ if (flags & (AFS_VNODE_META_CHANGED | AFS_VNODE_NOT_YET_SET)) {
+ vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner);
+ vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group);
+ set_nlink(&vnode->vfs_inode, status->nlink);
+
+ mode = vnode->vfs_inode.i_mode;
+ mode &= ~S_IALLUGO;
+ mode |= status->mode;
+ barrier();
+ vnode->vfs_inode.i_mode = mode;
+ }
+
+ if (!(flags & AFS_VNODE_NOT_YET_SET)) {
+ if (expected_version &&
+ *expected_version != status->data_version) {
+ _debug("vnode modified %llx on {%x:%u} [exp %llx]",
+ (unsigned long long) status->data_version,
+ vnode->fid.vid, vnode->fid.vnode,
+ (unsigned long long) *expected_version);
+ vnode->invalid_before = status->data_version;
+ if (vnode->status.type == AFS_FTYPE_DIR) {
+ if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
+ afs_stat_v(vnode, n_inval);
+ } else {
+ set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
+ }
+ } else if (vnode->status.type == AFS_FTYPE_DIR) {
+ /* Expected directory change is handled elsewhere so
+ * that we can locally edit the directory and save on a
+ * download.
+ */
+ if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
+ flags &= ~AFS_VNODE_DATA_CHANGED;
+ }
+ }
+
+ if (flags & (AFS_VNODE_DATA_CHANGED | AFS_VNODE_NOT_YET_SET)) {
+ inode_set_iversion_raw(&vnode->vfs_inode, status->data_version);
+ i_size_write(&vnode->vfs_inode, status->size);
+ }
+}
+
+/*
+ * decode an AFSFetchStatus block
+ */
+static int xdr_decode_AFSFetchStatus(struct afs_call *call,
+ const __be32 **_bp,
+ struct afs_file_status *status,
+ struct afs_vnode *vnode,
+ const afs_dataversion_t *expected_version,
+ struct afs_read *read_req)
+{
+ const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
+ bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
+ u64 data_version, size;
+ u32 type, abort_code;
+ u8 flags = 0;
+
+ abort_code = ntohl(xdr->abort_code);
+
+ if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
+ if (xdr->if_version == htonl(0) &&
+ abort_code != 0 &&
+ inline_error) {
+ /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
+ * whereby it doesn't set the interface version in the error
+ * case.
+ */
+ status->abort_code = abort_code;
+ return 0;
+ }
+
+ pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
+ goto bad;
+ }
+
+ if (abort_code != 0 && inline_error) {
+ status->abort_code = abort_code;
+ return 0;
+ }
+
+ type = ntohl(xdr->type);
+ switch (type) {
+ case AFS_FTYPE_FILE:
+ case AFS_FTYPE_DIR:
+ case AFS_FTYPE_SYMLINK:
+ if (type != status->type &&
+ vnode &&
+ !test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
+ pr_warning("Vnode %x:%x:%x changed type %u to %u\n",
+ vnode->fid.vid,
+ vnode->fid.vnode,
+ vnode->fid.unique,
+ status->type, type);
+ goto bad;
+ }
+ status->type = type;
+ break;
+ default:
+ goto bad;
+ }
+
+#define EXTRACT_M(FIELD) \
+ do { \
+ u32 x = ntohl(xdr->FIELD); \
+ if (status->FIELD != x) { \
+ flags |= AFS_VNODE_META_CHANGED; \
+ status->FIELD = x; \
+ } \
+ } while (0)
+
+ EXTRACT_M(nlink);
+ EXTRACT_M(author);
+ EXTRACT_M(owner);
+ EXTRACT_M(caller_access); /* call ticket dependent */
+ EXTRACT_M(anon_access);
+ EXTRACT_M(mode);
+ EXTRACT_M(group);
+
+ status->mtime_client = ntohl(xdr->mtime_client);
+ status->mtime_server = ntohl(xdr->mtime_server);
+ status->lock_count = ntohl(xdr->lock_count);
+
+ size = (u64)ntohl(xdr->size_lo);
+ size |= (u64)ntohl(xdr->size_hi) << 32;
+ status->size = size;
+
+ data_version = (u64)ntohl(xdr->data_version_lo);
+ data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
+ if (data_version != status->data_version) {
+ status->data_version = data_version;
+ flags |= AFS_VNODE_DATA_CHANGED;
+ }
+
+ if (read_req) {
+ read_req->data_version = data_version;
+ read_req->file_size = size;
+ }
+
+ *_bp = (const void *)*_bp + sizeof(*xdr);
+
+ if (vnode) {
+ if (test_bit(AFS_VNODE_UNSET, &vnode->flags))
+ flags |= AFS_VNODE_NOT_YET_SET;
+ afs_update_inode_from_status(vnode, status, expected_version,
+ flags);
+ }
+
+ return 0;
+
+bad:
+ xdr_dump_bad(*_bp);
+ return afs_protocol_error(call, -EBADMSG);
+}
+
+/*
+ * Decode the file status. We need to lock the target vnode if we're going to
+ * update its status so that stat() sees the attributes update atomically.
+ */
+static int afs_decode_status(struct afs_call *call,
+ const __be32 **_bp,
+ struct afs_file_status *status,
+ struct afs_vnode *vnode,
+ const afs_dataversion_t *expected_version,
+ struct afs_read *read_req)
+{
+ int ret;
+
+ if (!vnode)
+ return xdr_decode_AFSFetchStatus(call, _bp, status, vnode,
+ expected_version, read_req);
+
+ write_seqlock(&vnode->cb_lock);
+ ret = xdr_decode_AFSFetchStatus(call, _bp, status, vnode,
+ expected_version, read_req);
+ write_sequnlock(&vnode->cb_lock);
+ return ret;
+}
+
+/*
+ * decode an AFSCallBack block
+ */
+static void xdr_decode_AFSCallBack(struct afs_call *call,
+ struct afs_vnode *vnode,
+ const __be32 **_bp)
+{
+ struct afs_cb_interest *old, *cbi = call->cbi;
+ const __be32 *bp = *_bp;
+ u32 cb_expiry;
+
+ write_seqlock(&vnode->cb_lock);
+
+ if (call->cb_break == afs_cb_break_sum(vnode, cbi)) {
+ vnode->cb_version = ntohl(*bp++);
+ cb_expiry = ntohl(*bp++);
+ vnode->cb_type = ntohl(*bp++);
+ vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds();
+ old = vnode->cb_interest;
+ if (old != call->cbi) {
+ vnode->cb_interest = cbi;
+ cbi = old;
+ }
+ set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
+ } else {
+ bp += 3;
+ }
+
+ write_sequnlock(&vnode->cb_lock);
+ call->cbi = cbi;
+ *_bp = bp;
+}
+
+static void xdr_decode_AFSCallBack_raw(const __be32 **_bp,
+ struct afs_callback *cb)
+{
+ const __be32 *bp = *_bp;
+
+ cb->version = ntohl(*bp++);
+ cb->expiry = ntohl(*bp++);
+ cb->type = ntohl(*bp++);
+ *_bp = bp;
+}
+
+/*
+ * 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;
+ }
+
+ if (attr->ia_valid & ATTR_UID) {
+ mask |= AFS_SET_OWNER;
+ owner = from_kuid(&init_user_ns, attr->ia_uid);
+ }
+
+ if (attr->ia_valid & ATTR_GID) {
+ mask |= AFS_SET_GROUP;
+ group = from_kgid(&init_user_ns, attr->ia_gid);
+ }
+
+ if (attr->ia_valid & ATTR_MODE) {
+ mask |= AFS_SET_MODE;
+ mode = attr->ia_mode & S_IALLUGO;
+ }
+
+ *bp++ = htonl(mask);
+ *bp++ = htonl(mtime);
+ *bp++ = htonl(owner);
+ *bp++ = htonl(group);
+ *bp++ = htonl(mode);
+ *bp++ = 0; /* segment size */
+ *_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_vnode(struct afs_call *call)
+{
+ struct afs_vnode *vnode = call->reply[0];
+ const __be32 *bp;
+ int ret;
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ if (afs_decode_status(call, &bp, &vnode->status, vnode,
+ &call->expected_version, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ xdr_decode_AFSCallBack(call, vnode, &bp);
+ if (call->reply[1])
+ xdr_decode_AFSVolSync(&bp, call->reply[1]);
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.FetchStatus operation type
+ */
+static const struct afs_call_type afs_RXFSFetchStatus_vnode = {
+ .name = "FS.FetchStatus(vnode)",
+ .op = afs_FS_FetchStatus,
+ .deliver = afs_deliver_fs_fetch_status_vnode,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * fetch the status information for a file
+ */
+int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync,
+ bool new_inode)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus_vnode,
+ 16, (21 + 3 + 6) * 4);
+ if (!call) {
+ fc->ac.error = -ENOMEM;
+ return -ENOMEM;
+ }
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->reply[1] = volsync;
+ call->expected_version = new_inode ? 1 : vnode->status.data_version;
+
+ /* 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);
+
+ call->cb_break = fc->cb_break;
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.FetchData
+ */
+static int afs_deliver_fs_fetch_data(struct afs_call *call)
+{
+ struct afs_vnode *vnode = call->reply[0];
+ struct afs_read *req = call->reply[2];
+ const __be32 *bp;
+ unsigned int size;
+ void *buffer;
+ int ret;
+
+ _enter("{%u,%zu/%u;%llu/%llu}",
+ call->unmarshall, call->offset, call->count,
+ req->remain, req->actual_len);
+
+ switch (call->unmarshall) {
+ case 0:
+ req->actual_len = 0;
+ call->offset = 0;
+ call->unmarshall++;
+ if (call->operation_ID != FSFETCHDATA64) {
+ call->unmarshall++;
+ goto no_msw;
+ }
+
+ /* 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, &call->tmp, 4, true);
+ if (ret < 0)
+ return ret;
+
+ req->actual_len = ntohl(call->tmp);
+ req->actual_len <<= 32;
+ call->offset = 0;
+ call->unmarshall++;
+
+ no_msw:
+ /* extract the returned data length */
+ case 2:
+ _debug("extract data length");
+ ret = afs_extract_data(call, &call->tmp, 4, true);
+ if (ret < 0)
+ return ret;
+
+ req->actual_len |= ntohl(call->tmp);
+ _debug("DATA length: %llu", req->actual_len);
+
+ req->remain = req->actual_len;
+ call->offset = req->pos & (PAGE_SIZE - 1);
+ req->index = 0;
+ if (req->actual_len == 0)
+ goto no_more_data;
+ call->unmarshall++;
+
+ begin_page:
+ ASSERTCMP(req->index, <, req->nr_pages);
+ if (req->remain > PAGE_SIZE - call->offset)
+ size = PAGE_SIZE - call->offset;
+ else
+ size = req->remain;
+ call->count = call->offset + size;
+ ASSERTCMP(call->count, <=, PAGE_SIZE);
+ req->remain -= size;
+
+ /* extract the returned data */
+ case 3:
+ _debug("extract data %llu/%llu %zu/%u",
+ req->remain, req->actual_len, call->offset, call->count);
+
+ buffer = kmap(req->pages[req->index]);
+ ret = afs_extract_data(call, buffer, call->count, true);
+ kunmap(req->pages[req->index]);
+ if (ret < 0)
+ return ret;
+ if (call->offset == PAGE_SIZE) {
+ if (req->page_done)
+ req->page_done(call, req);
+ req->index++;
+ if (req->remain > 0) {
+ call->offset = 0;
+ if (req->index >= req->nr_pages) {
+ call->unmarshall = 4;
+ goto begin_discard;
+ }
+ goto begin_page;
+ }
+ }
+ goto no_more_data;
+
+ /* Discard any excess data the server gave us */
+ begin_discard:
+ case 4:
+ size = min_t(loff_t, sizeof(afs_discard_buffer), req->remain);
+ call->count = size;
+ _debug("extract discard %llu/%llu %zu/%u",
+ req->remain, req->actual_len, call->offset, call->count);
+
+ call->offset = 0;
+ ret = afs_extract_data(call, afs_discard_buffer, call->count, true);
+ req->remain -= call->offset;
+ if (ret < 0)
+ return ret;
+ if (req->remain > 0)
+ goto begin_discard;
+
+ no_more_data:
+ call->offset = 0;
+ call->unmarshall = 5;
+
+ /* extract the metadata */
+ case 5:
+ ret = afs_extract_data(call, call->buffer,
+ (21 + 3 + 6) * 4, false);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ if (afs_decode_status(call, &bp, &vnode->status, vnode,
+ &vnode->status.data_version, req) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ xdr_decode_AFSCallBack(call, vnode, &bp);
+ if (call->reply[1])
+ xdr_decode_AFSVolSync(&bp, call->reply[1]);
+
+ call->offset = 0;
+ call->unmarshall++;
+
+ case 6:
+ break;
+ }
+
+ for (; req->index < req->nr_pages; req->index++) {
+ if (call->count < PAGE_SIZE)
+ zero_user_segment(req->pages[req->index],
+ call->count, PAGE_SIZE);
+ if (req->page_done)
+ req->page_done(call, req);
+ call->count = 0;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+static void afs_fetch_data_destructor(struct afs_call *call)
+{
+ struct afs_read *req = call->reply[2];
+
+ afs_put_read(req);
+ afs_flat_call_destructor(call);
+}
+
+/*
+ * FS.FetchData operation type
+ */
+static const struct afs_call_type afs_RXFSFetchData = {
+ .name = "FS.FetchData",
+ .op = afs_FS_FetchData,
+ .deliver = afs_deliver_fs_fetch_data,
+ .destructor = afs_fetch_data_destructor,
+};
+
+static const struct afs_call_type afs_RXFSFetchData64 = {
+ .name = "FS.FetchData64",
+ .op = afs_FS_FetchData64,
+ .deliver = afs_deliver_fs_fetch_data,
+ .destructor = afs_fetch_data_destructor,
+};
+
+/*
+ * fetch data from a very large file
+ */
+static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->reply[1] = NULL; /* volsync */
+ call->reply[2] = req;
+ call->expected_version = vnode->status.data_version;
+
+ /* 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(req->pos));
+ bp[5] = htonl(lower_32_bits(req->pos));
+ bp[6] = 0;
+ bp[7] = htonl(lower_32_bits(req->len));
+
+ refcount_inc(&req->usage);
+ call->cb_break = fc->cb_break;
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * fetch data from a file
+ */
+int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ if (upper_32_bits(req->pos) ||
+ upper_32_bits(req->len) ||
+ upper_32_bits(req->pos + req->len))
+ return afs_fs_fetch_data64(fc, req);
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->reply[1] = NULL; /* volsync */
+ call->reply[2] = req;
+ call->expected_version = vnode->status.data_version;
+
+ /* marshall the parameters */
+ 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(lower_32_bits(req->pos));
+ bp[5] = htonl(lower_32_bits(req->len));
+
+ refcount_inc(&req->usage);
+ call->cb_break = fc->cb_break;
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.CreateFile or an FS.MakeDir
+ */
+static int afs_deliver_fs_create_vnode(struct afs_call *call)
+{
+ struct afs_vnode *vnode = call->reply[0];
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ xdr_decode_AFSFid(&bp, call->reply[1]);
+ if (afs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL) < 0 ||
+ afs_decode_status(call, &bp, &vnode->status, vnode,
+ &call->expected_version, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ xdr_decode_AFSCallBack_raw(&bp, call->reply[3]);
+ /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.CreateFile and FS.MakeDir operation type
+ */
+static const struct afs_call_type afs_RXFSCreateFile = {
+ .name = "FS.CreateFile",
+ .op = afs_FS_CreateFile,
+ .deliver = afs_deliver_fs_create_vnode,
+ .destructor = afs_flat_call_destructor,
+};
+
+static const struct afs_call_type afs_RXFSMakeDir = {
+ .name = "FS.MakeDir",
+ .op = afs_FS_MakeDir,
+ .deliver = afs_deliver_fs_create_vnode,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * create a file or make a directory
+ */
+int afs_fs_create(struct afs_fs_cursor *fc,
+ const char *name,
+ umode_t mode,
+ u64 current_data_version,
+ struct afs_fid *newfid,
+ struct afs_file_status *newstatus,
+ struct afs_callback *newcb)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ size_t namesz, reqsz, padsz;
+ __be32 *bp;
+
+ _enter("");
+
+ namesz = strlen(name);
+ padsz = (4 - (namesz & 3)) & 3;
+ reqsz = (5 * 4) + namesz + padsz + (6 * 4);
+
+ call = afs_alloc_flat_call(
+ net, S_ISDIR(mode) ? &afs_RXFSMakeDir : &afs_RXFSCreateFile,
+ reqsz, (3 + 21 + 21 + 3 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->reply[1] = newfid;
+ call->reply[2] = newstatus;
+ call->reply[3] = newcb;
+ call->expected_version = current_data_version + 1;
+
+ /* 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;
+ }
+ *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
+ *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = htonl(mode & S_IALLUGO); /* unix mode */
+ *bp++ = 0; /* segment size */
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.RemoveFile or FS.RemoveDir
+ */
+static int afs_deliver_fs_remove(struct afs_call *call)
+{
+ struct afs_vnode *vnode = call->reply[0];
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ if (afs_decode_status(call, &bp, &vnode->status, vnode,
+ &call->expected_version, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.RemoveDir/FS.RemoveFile operation type
+ */
+static const struct afs_call_type afs_RXFSRemoveFile = {
+ .name = "FS.RemoveFile",
+ .op = afs_FS_RemoveFile,
+ .deliver = afs_deliver_fs_remove,
+ .destructor = afs_flat_call_destructor,
+};
+
+static const struct afs_call_type afs_RXFSRemoveDir = {
+ .name = "FS.RemoveDir",
+ .op = afs_FS_RemoveDir,
+ .deliver = afs_deliver_fs_remove,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * remove a file or directory
+ */
+int afs_fs_remove(struct afs_fs_cursor *fc, const char *name, bool isdir,
+ u64 current_data_version)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ size_t namesz, reqsz, padsz;
+ __be32 *bp;
+
+ _enter("");
+
+ namesz = strlen(name);
+ padsz = (4 - (namesz & 3)) & 3;
+ reqsz = (5 * 4) + namesz + padsz;
+
+ call = afs_alloc_flat_call(
+ net, isdir ? &afs_RXFSRemoveDir : &afs_RXFSRemoveFile,
+ reqsz, (21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->expected_version = current_data_version + 1;
+
+ /* marshall the parameters */
+ 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;
+ }
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.Link
+ */
+static int afs_deliver_fs_link(struct afs_call *call)
+{
+ struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1];
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ if (afs_decode_status(call, &bp, &vnode->status, vnode, NULL, NULL) < 0 ||
+ afs_decode_status(call, &bp, &dvnode->status, dvnode,
+ &call->expected_version, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.Link operation type
+ */
+static const struct afs_call_type afs_RXFSLink = {
+ .name = "FS.Link",
+ .op = afs_FS_Link,
+ .deliver = afs_deliver_fs_link,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * make a hard link
+ */
+int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
+ const char *name, u64 current_data_version)
+{
+ struct afs_vnode *dvnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ size_t namesz, reqsz, padsz;
+ __be32 *bp;
+
+ _enter("");
+
+ namesz = strlen(name);
+ padsz = (4 - (namesz & 3)) & 3;
+ reqsz = (5 * 4) + namesz + padsz + (3 * 4);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = dvnode;
+ call->reply[1] = vnode;
+ call->expected_version = current_data_version + 1;
+
+ /* 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);
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.Symlink
+ */
+static int afs_deliver_fs_symlink(struct afs_call *call)
+{
+ struct afs_vnode *vnode = call->reply[0];
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ xdr_decode_AFSFid(&bp, call->reply[1]);
+ if (afs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL) ||
+ afs_decode_status(call, &bp, &vnode->status, vnode,
+ &call->expected_version, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.Symlink operation type
+ */
+static const struct afs_call_type afs_RXFSSymlink = {
+ .name = "FS.Symlink",
+ .op = afs_FS_Symlink,
+ .deliver = afs_deliver_fs_symlink,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * create a symbolic link
+ */
+int afs_fs_symlink(struct afs_fs_cursor *fc,
+ const char *name,
+ const char *contents,
+ u64 current_data_version,
+ struct afs_fid *newfid,
+ struct afs_file_status *newstatus)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ 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(net, &afs_RXFSSymlink, reqsz,
+ (3 + 21 + 21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->reply[1] = newfid;
+ call->reply[2] = newstatus;
+ call->expected_version = current_data_version + 1;
+
+ /* 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 | AFS_SET_MTIME);
+ *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = htonl(S_IRWXUGO); /* unix mode */
+ *bp++ = 0; /* segment size */
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.Rename
+ */
+static int afs_deliver_fs_rename(struct afs_call *call)
+{
+ struct afs_vnode *orig_dvnode = call->reply[0], *new_dvnode = call->reply[1];
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ if (afs_decode_status(call, &bp, &orig_dvnode->status, orig_dvnode,
+ &call->expected_version, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ if (new_dvnode != orig_dvnode &&
+ afs_decode_status(call, &bp, &new_dvnode->status, new_dvnode,
+ &call->expected_version_2, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.Rename operation type
+ */
+static const struct afs_call_type afs_RXFSRename = {
+ .name = "FS.Rename",
+ .op = afs_FS_Rename,
+ .deliver = afs_deliver_fs_rename,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * create a symbolic link
+ */
+int afs_fs_rename(struct afs_fs_cursor *fc,
+ const char *orig_name,
+ struct afs_vnode *new_dvnode,
+ const char *new_name,
+ u64 current_orig_data_version,
+ u64 current_new_data_version)
+{
+ struct afs_vnode *orig_dvnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(orig_dvnode);
+ size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
+ __be32 *bp;
+
+ _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;
+
+ reqsz = (4 * 4) +
+ 4 + o_namesz + o_padsz +
+ (3 * 4) +
+ 4 + n_namesz + n_padsz;
+
+ call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = orig_dvnode;
+ call->reply[1] = new_dvnode;
+ call->expected_version = current_orig_data_version + 1;
+ call->expected_version_2 = current_new_data_version + 1;
+
+ /* 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;
+ }
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &orig_dvnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.StoreData
+ */
+static int afs_deliver_fs_store_data(struct afs_call *call)
+{
+ struct afs_vnode *vnode = call->reply[0];
+ const __be32 *bp;
+ int ret;
+
+ _enter("");
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ if (afs_decode_status(call, &bp, &vnode->status, vnode,
+ &call->expected_version, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
+
+ 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",
+ .op = afs_FS_StoreData,
+ .deliver = afs_deliver_fs_store_data,
+ .destructor = afs_flat_call_destructor,
+};
+
+static const struct afs_call_type afs_RXFSStoreData64 = {
+ .name = "FS.StoreData64",
+ .op = afs_FS_StoreData64,
+ .deliver = afs_deliver_fs_store_data,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * store a set of pages to a very large file
+ */
+static int afs_fs_store_data64(struct afs_fs_cursor *fc,
+ struct address_space *mapping,
+ pgoff_t first, pgoff_t last,
+ unsigned offset, unsigned to,
+ loff_t size, loff_t pos, loff_t i_size)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSStoreData64,
+ (4 + 6 + 3 * 2) * 4,
+ (21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->mapping = mapping;
+ call->reply[0] = vnode;
+ call->first = first;
+ call->last = last;
+ call->first_offset = offset;
+ call->last_to = to;
+ call->send_pages = true;
+ call->expected_version = vnode->status.data_version + 1;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSSTOREDATA64);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+
+ *bp++ = htonl(AFS_SET_MTIME); /* mask */
+ *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = 0; /* unix mode */
+ *bp++ = 0; /* segment size */
+
+ *bp++ = htonl(pos >> 32);
+ *bp++ = htonl((u32) pos);
+ *bp++ = htonl(size >> 32);
+ *bp++ = htonl((u32) size);
+ *bp++ = htonl(i_size >> 32);
+ *bp++ = htonl((u32) i_size);
+
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * store a set of pages
+ */
+int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
+ pgoff_t first, pgoff_t last,
+ unsigned offset, unsigned to)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ loff_t size, pos, i_size;
+ __be32 *bp;
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+
+ size = (loff_t)to - (loff_t)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(fc, mapping, first, last, offset, to,
+ size, pos, i_size);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSStoreData,
+ (4 + 6 + 3) * 4,
+ (21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->mapping = mapping;
+ call->reply[0] = vnode;
+ call->first = first;
+ call->last = last;
+ call->first_offset = offset;
+ call->last_to = to;
+ call->send_pages = true;
+ call->expected_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(AFS_SET_MTIME); /* mask */
+ *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* 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);
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.StoreStatus
+ */
+static int afs_deliver_fs_store_status(struct afs_call *call)
+{
+ struct afs_vnode *vnode = call->reply[0];
+ const __be32 *bp;
+ int ret;
+
+ _enter("");
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ if (afs_decode_status(call, &bp, &vnode->status, vnode,
+ &call->expected_version, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+ /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.StoreStatus operation type
+ */
+static const struct afs_call_type afs_RXFSStoreStatus = {
+ .name = "FS.StoreStatus",
+ .op = afs_FS_StoreStatus,
+ .deliver = afs_deliver_fs_store_status,
+ .destructor = afs_flat_call_destructor,
+};
+
+static const struct afs_call_type afs_RXFSStoreData_as_Status = {
+ .name = "FS.StoreData",
+ .op = afs_FS_StoreData,
+ .deliver = afs_deliver_fs_store_status,
+ .destructor = afs_flat_call_destructor,
+};
+
+static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
+ .name = "FS.StoreData64",
+ .op = afs_FS_StoreData64,
+ .deliver = afs_deliver_fs_store_status,
+ .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_fs_cursor *fc, struct iattr *attr)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+
+ ASSERT(attr->ia_valid & ATTR_SIZE);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status,
+ (4 + 6 + 3 * 2) * 4,
+ (21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->expected_version = vnode->status.data_version + 1;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSSTOREDATA64);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+
+ 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);
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * 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_fs_cursor *fc, struct iattr *attr)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+
+ ASSERT(attr->ia_valid & ATTR_SIZE);
+ if (attr->ia_size >> 32)
+ return afs_fs_setattr_size64(fc, attr);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status,
+ (4 + 6 + 3) * 4,
+ (21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->expected_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);
+
+ 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 */
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * 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_fs_cursor *fc, struct iattr *attr)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ if (attr->ia_valid & ATTR_SIZE)
+ return afs_fs_setattr_size(fc, attr);
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus,
+ (4 + 6) * 4,
+ (21 + 6) * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->expected_version = vnode->status.data_version;
+
+ /* marshall the parameters */
+ 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);
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.GetVolumeStatus
+ */
+static int afs_deliver_fs_get_volume_status(struct afs_call *call)
+{
+ const __be32 *bp;
+ char *p;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ 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, call->buffer,
+ 12 * 4, true);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ xdr_decode_AFSFetchVolumeStatus(&bp, call->reply[1]);
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the volume name length */
+ case 2:
+ ret = afs_extract_data(call, &call->tmp, 4, true);
+ if (ret < 0)
+ return ret;
+
+ call->count = ntohl(call->tmp);
+ _debug("volname length: %u", call->count);
+ if (call->count >= AFSNAMEMAX)
+ return afs_protocol_error(call, -EBADMSG);
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the volume name */
+ case 3:
+ _debug("extract volname");
+ if (call->count > 0) {
+ ret = afs_extract_data(call, call->reply[2],
+ call->count, true);
+ if (ret < 0)
+ return ret;
+ }
+
+ p = call->reply[2];
+ 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, call->buffer,
+ call->count, true);
+ if (ret < 0)
+ return ret;
+
+ call->offset = 0;
+ call->unmarshall++;
+ no_volname_padding:
+
+ /* extract the offline message length */
+ case 5:
+ ret = afs_extract_data(call, &call->tmp, 4, true);
+ if (ret < 0)
+ return ret;
+
+ call->count = ntohl(call->tmp);
+ _debug("offline msg length: %u", call->count);
+ if (call->count >= AFSNAMEMAX)
+ return afs_protocol_error(call, -EBADMSG);
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the offline message */
+ case 6:
+ _debug("extract offline");
+ if (call->count > 0) {
+ ret = afs_extract_data(call, call->reply[2],
+ call->count, true);
+ if (ret < 0)
+ return ret;
+ }
+
+ p = call->reply[2];
+ 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, call->buffer,
+ call->count, true);
+ if (ret < 0)
+ return ret;
+
+ call->offset = 0;
+ call->unmarshall++;
+ no_offline_padding:
+
+ /* extract the message of the day length */
+ case 8:
+ ret = afs_extract_data(call, &call->tmp, 4, true);
+ if (ret < 0)
+ return ret;
+
+ call->count = ntohl(call->tmp);
+ _debug("motd length: %u", call->count);
+ if (call->count >= AFSNAMEMAX)
+ return afs_protocol_error(call, -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, call->reply[2],
+ call->count, true);
+ if (ret < 0)
+ return ret;
+ }
+
+ p = call->reply[2];
+ p[call->count] = 0;
+ _debug("motd '%s'", p);
+
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the message of the day padding */
+ call->count = (4 - (call->count & 3)) & 3;
+
+ case 10:
+ ret = afs_extract_data(call, call->buffer,
+ call->count, false);
+ if (ret < 0)
+ return ret;
+
+ call->offset = 0;
+ call->unmarshall++;
+ case 11:
+ break;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * destroy an FS.GetVolumeStatus call
+ */
+static void afs_get_volume_status_call_destructor(struct afs_call *call)
+{
+ kfree(call->reply[2]);
+ call->reply[2] = NULL;
+ afs_flat_call_destructor(call);
+}
+
+/*
+ * FS.GetVolumeStatus operation type
+ */
+static const struct afs_call_type afs_RXFSGetVolumeStatus = {
+ .name = "FS.GetVolumeStatus",
+ .op = afs_FS_GetVolumeStatus,
+ .deliver = afs_deliver_fs_get_volume_status,
+ .destructor = afs_get_volume_status_call_destructor,
+};
+
+/*
+ * fetch the status of a volume
+ */
+int afs_fs_get_volume_status(struct afs_fs_cursor *fc,
+ struct afs_volume_status *vs)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+ void *tmpbuf;
+
+ _enter("");
+
+ tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
+ if (!tmpbuf)
+ return -ENOMEM;
+
+ call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4);
+ if (!call) {
+ kfree(tmpbuf);
+ return -ENOMEM;
+ }
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+ call->reply[1] = vs;
+ call->reply[2] = tmpbuf;
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp[0] = htonl(FSGETVOLUMESTATUS);
+ bp[1] = htonl(vnode->fid.vid);
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
+ */
+static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
+{
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.SetLock operation type
+ */
+static const struct afs_call_type afs_RXFSSetLock = {
+ .name = "FS.SetLock",
+ .op = afs_FS_SetLock,
+ .deliver = afs_deliver_fs_xxxx_lock,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * FS.ExtendLock operation type
+ */
+static const struct afs_call_type afs_RXFSExtendLock = {
+ .name = "FS.ExtendLock",
+ .op = afs_FS_ExtendLock,
+ .deliver = afs_deliver_fs_xxxx_lock,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * FS.ReleaseLock operation type
+ */
+static const struct afs_call_type afs_RXFSReleaseLock = {
+ .name = "FS.ReleaseLock",
+ .op = afs_FS_ReleaseLock,
+ .deliver = afs_deliver_fs_xxxx_lock,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Set a lock on a file
+ */
+int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+
+ /* 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);
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * extend a lock on a file
+ */
+int afs_fs_extend_lock(struct afs_fs_cursor *fc)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSEXTENDLOCK);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * release a lock on a file
+ */
+int afs_fs_release_lock(struct afs_fs_cursor *fc)
+{
+ struct afs_vnode *vnode = fc->vnode;
+ struct afs_call *call;
+ struct afs_net *net = afs_v2net(vnode);
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = fc->key;
+ call->reply[0] = vnode;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSRELEASELOCK);
+ *bp++ = htonl(vnode->fid.vid);
+ *bp++ = htonl(vnode->fid.vnode);
+ *bp++ = htonl(vnode->fid.unique);
+
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &vnode->fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * Deliver reply data to an FS.GiveUpAllCallBacks operation.
+ */
+static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call)
+{
+ return afs_transfer_reply(call);
+}
+
+/*
+ * FS.GiveUpAllCallBacks operation type
+ */
+static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = {
+ .name = "FS.GiveUpAllCallBacks",
+ .op = afs_FS_GiveUpAllCallBacks,
+ .deliver = afs_deliver_fs_give_up_all_callbacks,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Flush all the callbacks we have on a server.
+ */
+int afs_fs_give_up_all_callbacks(struct afs_net *net,
+ struct afs_server *server,
+ struct afs_addr_cursor *ac,
+ struct key *key)
+{
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = key;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSGIVEUPALLCALLBACKS);
+
+ /* Can't take a ref on server */
+ return afs_make_call(ac, call, GFP_NOFS, false);
+}
+
+/*
+ * Deliver reply data to an FS.GetCapabilities operation.
+ */
+static int afs_deliver_fs_get_capabilities(struct afs_call *call)
+{
+ u32 count;
+ int ret;
+
+ _enter("{%u,%zu/%u}", call->unmarshall, call->offset, call->count);
+
+again:
+ switch (call->unmarshall) {
+ case 0:
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* Extract the capabilities word count */
+ case 1:
+ ret = afs_extract_data(call, &call->tmp,
+ 1 * sizeof(__be32),
+ true);
+ if (ret < 0)
+ return ret;
+
+ count = ntohl(call->tmp);
+
+ call->count = count;
+ call->count2 = count;
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* Extract capabilities words */
+ case 2:
+ count = min(call->count, 16U);
+ ret = afs_extract_data(call, call->buffer,
+ count * sizeof(__be32),
+ call->count > 16);
+ if (ret < 0)
+ return ret;
+
+ /* TODO: Examine capabilities */
+
+ call->count -= count;
+ if (call->count > 0)
+ goto again;
+ call->offset = 0;
+ call->unmarshall++;
+ break;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.GetCapabilities operation type
+ */
+static const struct afs_call_type afs_RXFSGetCapabilities = {
+ .name = "FS.GetCapabilities",
+ .op = afs_FS_GetCapabilities,
+ .deliver = afs_deliver_fs_get_capabilities,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Probe a fileserver for the capabilities that it supports. This can
+ * return up to 196 words.
+ */
+int afs_fs_get_capabilities(struct afs_net *net,
+ struct afs_server *server,
+ struct afs_addr_cursor *ac,
+ struct key *key)
+{
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
+ if (!call)
+ return -ENOMEM;
+
+ call->key = key;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSGETCAPABILITIES);
+
+ /* Can't take a ref on server */
+ trace_afs_make_fs_call(call, NULL);
+ return afs_make_call(ac, call, GFP_NOFS, false);
+}
+
+/*
+ * Deliver reply data to an FS.FetchStatus with no vnode.
+ */
+static int afs_deliver_fs_fetch_status(struct afs_call *call)
+{
+ struct afs_file_status *status = call->reply[1];
+ struct afs_callback *callback = call->reply[2];
+ struct afs_volsync *volsync = call->reply[3];
+ struct afs_vnode *vnode = call->reply[0];
+ const __be32 *bp;
+ int ret;
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ afs_decode_status(call, &bp, status, vnode,
+ &call->expected_version, NULL);
+ callback[call->count].version = ntohl(bp[0]);
+ callback[call->count].expiry = ntohl(bp[1]);
+ callback[call->count].type = ntohl(bp[2]);
+ if (vnode)
+ xdr_decode_AFSCallBack(call, vnode, &bp);
+ else
+ bp += 3;
+ if (volsync)
+ xdr_decode_AFSVolSync(&bp, volsync);
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.FetchStatus operation type
+ */
+static const struct afs_call_type afs_RXFSFetchStatus = {
+ .name = "FS.FetchStatus",
+ .op = afs_FS_FetchStatus,
+ .deliver = afs_deliver_fs_fetch_status,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Fetch the status information for a fid without needing a vnode handle.
+ */
+int afs_fs_fetch_status(struct afs_fs_cursor *fc,
+ struct afs_net *net,
+ struct afs_fid *fid,
+ struct afs_file_status *status,
+ struct afs_callback *callback,
+ struct afs_volsync *volsync)
+{
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter(",%x,{%x:%u},,",
+ key_serial(fc->key), fid->vid, fid->vnode);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4);
+ if (!call) {
+ fc->ac.error = -ENOMEM;
+ return -ENOMEM;
+ }
+
+ call->key = fc->key;
+ call->reply[0] = NULL; /* vnode for fid[0] */
+ call->reply[1] = status;
+ call->reply[2] = callback;
+ call->reply[3] = volsync;
+ call->expected_version = 1; /* vnode->status.data_version */
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp[0] = htonl(FSFETCHSTATUS);
+ bp[1] = htonl(fid->vid);
+ bp[2] = htonl(fid->vnode);
+ bp[3] = htonl(fid->unique);
+
+ call->cb_break = fc->cb_break;
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, fid);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}
+
+/*
+ * Deliver reply data to an FS.InlineBulkStatus call
+ */
+static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
+{
+ struct afs_file_status *statuses;
+ struct afs_callback *callbacks;
+ struct afs_vnode *vnode = call->reply[0];
+ const __be32 *bp;
+ u32 tmp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ switch (call->unmarshall) {
+ case 0:
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* Extract the file status count and array in two steps */
+ case 1:
+ _debug("extract status count");
+ ret = afs_extract_data(call, &call->tmp, 4, true);
+ if (ret < 0)
+ return ret;
+
+ tmp = ntohl(call->tmp);
+ _debug("status count: %u/%u", tmp, call->count2);
+ if (tmp != call->count2)
+ return afs_protocol_error(call, -EBADMSG);
+
+ call->count = 0;
+ call->unmarshall++;
+ more_counts:
+ call->offset = 0;
+
+ case 2:
+ _debug("extract status array %u", call->count);
+ ret = afs_extract_data(call, call->buffer, 21 * 4, true);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ statuses = call->reply[1];
+ if (afs_decode_status(call, &bp, &statuses[call->count],
+ call->count == 0 ? vnode : NULL,
+ NULL, NULL) < 0)
+ return afs_protocol_error(call, -EBADMSG);
+
+ call->count++;
+ if (call->count < call->count2)
+ goto more_counts;
+
+ call->count = 0;
+ call->unmarshall++;
+ call->offset = 0;
+
+ /* Extract the callback count and array in two steps */
+ case 3:
+ _debug("extract CB count");
+ ret = afs_extract_data(call, &call->tmp, 4, true);
+ if (ret < 0)
+ return ret;
+
+ tmp = ntohl(call->tmp);
+ _debug("CB count: %u", tmp);
+ if (tmp != call->count2)
+ return afs_protocol_error(call, -EBADMSG);
+ call->count = 0;
+ call->unmarshall++;
+ more_cbs:
+ call->offset = 0;
+
+ case 4:
+ _debug("extract CB array");
+ ret = afs_extract_data(call, call->buffer, 3 * 4, true);
+ if (ret < 0)
+ return ret;
+
+ _debug("unmarshall CB array");
+ bp = call->buffer;
+ callbacks = call->reply[2];
+ callbacks[call->count].version = ntohl(bp[0]);
+ callbacks[call->count].expiry = ntohl(bp[1]);
+ callbacks[call->count].type = ntohl(bp[2]);
+ statuses = call->reply[1];
+ if (call->count == 0 && vnode && statuses[0].abort_code == 0)
+ xdr_decode_AFSCallBack(call, vnode, &bp);
+ call->count++;
+ if (call->count < call->count2)
+ goto more_cbs;
+
+ call->offset = 0;
+ call->unmarshall++;
+
+ case 5:
+ ret = afs_extract_data(call, call->buffer, 6 * 4, false);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ if (call->reply[3])
+ xdr_decode_AFSVolSync(&bp, call->reply[3]);
+
+ call->offset = 0;
+ call->unmarshall++;
+
+ case 6:
+ break;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.InlineBulkStatus operation type
+ */
+static const struct afs_call_type afs_RXFSInlineBulkStatus = {
+ .name = "FS.InlineBulkStatus",
+ .op = afs_FS_InlineBulkStatus,
+ .deliver = afs_deliver_fs_inline_bulk_status,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Fetch the status information for up to 50 files
+ */
+int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
+ struct afs_net *net,
+ struct afs_fid *fids,
+ struct afs_file_status *statuses,
+ struct afs_callback *callbacks,
+ unsigned int nr_fids,
+ struct afs_volsync *volsync)
+{
+ struct afs_call *call;
+ __be32 *bp;
+ int i;
+
+ _enter(",%x,{%x:%u},%u",
+ key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
+
+ call = afs_alloc_flat_call(net, &afs_RXFSInlineBulkStatus,
+ (2 + nr_fids * 3) * 4,
+ 21 * 4);
+ if (!call) {
+ fc->ac.error = -ENOMEM;
+ return -ENOMEM;
+ }
+
+ call->key = fc->key;
+ call->reply[0] = NULL; /* vnode for fid[0] */
+ call->reply[1] = statuses;
+ call->reply[2] = callbacks;
+ call->reply[3] = volsync;
+ call->count2 = nr_fids;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSINLINEBULKSTATUS);
+ *bp++ = htonl(nr_fids);
+ for (i = 0; i < nr_fids; i++) {
+ *bp++ = htonl(fids[i].vid);
+ *bp++ = htonl(fids[i].vnode);
+ *bp++ = htonl(fids[i].unique);
+ }
+
+ call->cb_break = fc->cb_break;
+ afs_use_fs_server(call, fc->cbi);
+ trace_afs_make_fs_call(call, &fids[0]);
+ return afs_make_call(&fc->ac, call, GFP_NOFS, false);
+}