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-rw-r--r--fs/afs/yfsclient.c1953
1 files changed, 1953 insertions, 0 deletions
diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c
new file mode 100644
index 000000000..11571cca8
--- /dev/null
+++ b/fs/afs/yfsclient.c
@@ -0,0 +1,1953 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* YFS File Server client stubs
+ *
+ * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ */
+
+#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"
+#include "protocol_yfs.h"
+
+#define xdr_size(x) (sizeof(*x) / sizeof(__be32))
+
+static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid)
+{
+ const struct yfs_xdr_YFSFid *x = (const void *)*_bp;
+
+ fid->vid = xdr_to_u64(x->volume);
+ fid->vnode = xdr_to_u64(x->vnode.lo);
+ fid->vnode_hi = ntohl(x->vnode.hi);
+ fid->unique = ntohl(x->vnode.unique);
+ *_bp += xdr_size(x);
+}
+
+static __be32 *xdr_encode_u32(__be32 *bp, u32 n)
+{
+ *bp++ = htonl(n);
+ return bp;
+}
+
+static __be32 *xdr_encode_u64(__be32 *bp, u64 n)
+{
+ struct yfs_xdr_u64 *x = (void *)bp;
+
+ *x = u64_to_xdr(n);
+ return bp + xdr_size(x);
+}
+
+static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid)
+{
+ struct yfs_xdr_YFSFid *x = (void *)bp;
+
+ x->volume = u64_to_xdr(fid->vid);
+ x->vnode.lo = u64_to_xdr(fid->vnode);
+ x->vnode.hi = htonl(fid->vnode_hi);
+ x->vnode.unique = htonl(fid->unique);
+ return bp + xdr_size(x);
+}
+
+static size_t xdr_strlen(unsigned int len)
+{
+ return sizeof(__be32) + round_up(len, sizeof(__be32));
+}
+
+static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len)
+{
+ bp = xdr_encode_u32(bp, len);
+ bp = memcpy(bp, p, len);
+ if (len & 3) {
+ unsigned int pad = 4 - (len & 3);
+
+ memset((u8 *)bp + len, 0, pad);
+ len += pad;
+ }
+
+ return bp + len / sizeof(__be32);
+}
+
+static __be32 *xdr_encode_name(__be32 *bp, const struct qstr *p)
+{
+ return xdr_encode_string(bp, p->name, p->len);
+}
+
+static s64 linux_to_yfs_time(const struct timespec64 *t)
+{
+ /* Convert to 100ns intervals. */
+ return (u64)t->tv_sec * 10000000 + t->tv_nsec/100;
+}
+
+static __be32 *xdr_encode_YFSStoreStatus(__be32 *bp, mode_t *mode,
+ const struct timespec64 *t)
+{
+ struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
+ mode_t masked_mode = mode ? *mode & S_IALLUGO : 0;
+ s64 mtime = linux_to_yfs_time(t);
+ u32 mask = AFS_SET_MTIME;
+
+ mask |= mode ? AFS_SET_MODE : 0;
+
+ x->mask = htonl(mask);
+ x->mode = htonl(masked_mode);
+ x->mtime_client = u64_to_xdr(mtime);
+ x->owner = u64_to_xdr(0);
+ x->group = u64_to_xdr(0);
+ return bp + xdr_size(x);
+}
+
+/*
+ * Convert a signed 100ns-resolution 64-bit time into a timespec.
+ */
+static struct timespec64 yfs_time_to_linux(s64 t)
+{
+ struct timespec64 ts;
+ u64 abs_t;
+
+ /*
+ * Unfortunately can not use normal 64 bit division on 32 bit arch, but
+ * the alternative, do_div, does not work with negative numbers so have
+ * to special case them
+ */
+ if (t < 0) {
+ abs_t = -t;
+ ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
+ ts.tv_nsec = -ts.tv_nsec;
+ ts.tv_sec = -abs_t;
+ } else {
+ abs_t = t;
+ ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
+ ts.tv_sec = abs_t;
+ }
+
+ return ts;
+}
+
+static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr)
+{
+ s64 t = xdr_to_u64(xdr);
+
+ return yfs_time_to_linux(t);
+}
+
+static void yfs_check_req(struct afs_call *call, __be32 *bp)
+{
+ size_t len = (void *)bp - call->request;
+
+ if (len > call->request_size)
+ pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n",
+ call->type->name, len, call->request_size);
+ else if (len < call->request_size)
+ pr_warn("kAFS: %s: Request buffer underflow (%zu<%u)\n",
+ call->type->name, len, call->request_size);
+}
+
+/*
+ * Dump a bad file status record.
+ */
+static void xdr_dump_bad(const __be32 *bp)
+{
+ __be32 x[4];
+ int i;
+
+ pr_notice("YFS XDR: Bad status record\n");
+ for (i = 0; i < 6 * 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, 8);
+ pr_notice("0x60: %08x %08x\n", ntohl(x[0]), ntohl(x[1]));
+}
+
+/*
+ * Decode a YFSFetchStatus block
+ */
+static void xdr_decode_YFSFetchStatus(const __be32 **_bp,
+ struct afs_call *call,
+ struct afs_status_cb *scb)
+{
+ const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
+ struct afs_file_status *status = &scb->status;
+ u32 type;
+
+ status->abort_code = ntohl(xdr->abort_code);
+ if (status->abort_code != 0) {
+ if (status->abort_code == VNOVNODE)
+ status->nlink = 0;
+ scb->have_error = true;
+ goto advance;
+ }
+
+ type = ntohl(xdr->type);
+ switch (type) {
+ case AFS_FTYPE_FILE:
+ case AFS_FTYPE_DIR:
+ case AFS_FTYPE_SYMLINK:
+ status->type = type;
+ break;
+ default:
+ goto bad;
+ }
+
+ status->nlink = ntohl(xdr->nlink);
+ status->author = xdr_to_u64(xdr->author);
+ status->owner = xdr_to_u64(xdr->owner);
+ status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
+ status->anon_access = ntohl(xdr->anon_access);
+ status->mode = ntohl(xdr->mode) & S_IALLUGO;
+ status->group = xdr_to_u64(xdr->group);
+ status->lock_count = ntohl(xdr->lock_count);
+
+ status->mtime_client = xdr_to_time(xdr->mtime_client);
+ status->mtime_server = xdr_to_time(xdr->mtime_server);
+ status->size = xdr_to_u64(xdr->size);
+ status->data_version = xdr_to_u64(xdr->data_version);
+ scb->have_status = true;
+advance:
+ *_bp += xdr_size(xdr);
+ return;
+
+bad:
+ xdr_dump_bad(*_bp);
+ afs_protocol_error(call, afs_eproto_bad_status);
+ goto advance;
+}
+
+/*
+ * Decode a YFSCallBack block
+ */
+static void xdr_decode_YFSCallBack(const __be32 **_bp,
+ struct afs_call *call,
+ struct afs_status_cb *scb)
+{
+ struct yfs_xdr_YFSCallBack *x = (void *)*_bp;
+ struct afs_callback *cb = &scb->callback;
+ ktime_t cb_expiry;
+
+ cb_expiry = ktime_add(call->issue_time, xdr_to_u64(x->expiration_time) * 100);
+ cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC);
+ scb->have_cb = true;
+ *_bp += xdr_size(x);
+}
+
+/*
+ * Decode a YFSVolSync block
+ */
+static void xdr_decode_YFSVolSync(const __be32 **_bp,
+ struct afs_volsync *volsync)
+{
+ struct yfs_xdr_YFSVolSync *x = (void *)*_bp;
+ u64 creation;
+
+ if (volsync) {
+ creation = xdr_to_u64(x->vol_creation_date);
+ do_div(creation, 10 * 1000 * 1000);
+ volsync->creation = creation;
+ }
+
+ *_bp += xdr_size(x);
+}
+
+/*
+ * Encode the requested attributes into a YFSStoreStatus block
+ */
+static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr)
+{
+ struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
+ s64 mtime = 0, owner = 0, group = 0;
+ u32 mask = 0, mode = 0;
+
+ mask = 0;
+ if (attr->ia_valid & ATTR_MTIME) {
+ mask |= AFS_SET_MTIME;
+ mtime = linux_to_yfs_time(&attr->ia_mtime);
+ }
+
+ 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;
+ }
+
+ x->mask = htonl(mask);
+ x->mode = htonl(mode);
+ x->mtime_client = u64_to_xdr(mtime);
+ x->owner = u64_to_xdr(owner);
+ x->group = u64_to_xdr(group);
+ return bp + xdr_size(x);
+}
+
+/*
+ * Decode a YFSFetchVolumeStatus block.
+ */
+static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp,
+ struct afs_volume_status *vs)
+{
+ const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp;
+ u32 flags;
+
+ vs->vid = xdr_to_u64(x->vid);
+ vs->parent_id = xdr_to_u64(x->parent_id);
+ flags = ntohl(x->flags);
+ vs->online = flags & yfs_FVSOnline;
+ vs->in_service = flags & yfs_FVSInservice;
+ vs->blessed = flags & yfs_FVSBlessed;
+ vs->needs_salvage = flags & yfs_FVSNeedsSalvage;
+ vs->type = ntohl(x->type);
+ vs->min_quota = 0;
+ vs->max_quota = xdr_to_u64(x->max_quota);
+ vs->blocks_in_use = xdr_to_u64(x->blocks_in_use);
+ vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail);
+ vs->part_max_blocks = xdr_to_u64(x->part_max_blocks);
+ vs->vol_copy_date = xdr_to_u64(x->vol_copy_date);
+ vs->vol_backup_date = xdr_to_u64(x->vol_backup_date);
+ *_bp += sizeof(*x) / sizeof(__be32);
+}
+
+/*
+ * Deliver reply data to operations that just return a file status and a volume
+ * sync record.
+ */
+static int yfs_deliver_status_and_volsync(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ const __be32 *bp;
+ int ret;
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ xdr_decode_YFSFetchStatus(&bp, call, &op->file[0].scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * Deliver reply data to an YFS.FetchData64.
+ */
+static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_read *req = op->fetch.req;
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u,%zu, %zu/%llu}",
+ call->unmarshall, call->iov_len, iov_iter_count(call->iter),
+ req->actual_len);
+
+ switch (call->unmarshall) {
+ case 0:
+ req->actual_len = 0;
+ afs_extract_to_tmp64(call);
+ call->unmarshall++;
+ fallthrough;
+
+ /* Extract the returned data length into ->actual_len. This
+ * may indicate more or less data than was requested will be
+ * returned.
+ */
+ case 1:
+ _debug("extract data length");
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ req->actual_len = be64_to_cpu(call->tmp64);
+ _debug("DATA length: %llu", req->actual_len);
+
+ if (req->actual_len == 0)
+ goto no_more_data;
+
+ call->iter = req->iter;
+ call->iov_len = min(req->actual_len, req->len);
+ call->unmarshall++;
+ fallthrough;
+
+ /* extract the returned data */
+ case 2:
+ _debug("extract data %zu/%llu",
+ iov_iter_count(call->iter), req->actual_len);
+
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ call->iter = &call->def_iter;
+ if (req->actual_len <= req->len)
+ goto no_more_data;
+
+ /* Discard any excess data the server gave us */
+ afs_extract_discard(call, req->actual_len - req->len);
+ call->unmarshall = 3;
+ fallthrough;
+
+ case 3:
+ _debug("extract discard %zu/%llu",
+ iov_iter_count(call->iter), req->actual_len - req->len);
+
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ no_more_data:
+ call->unmarshall = 4;
+ afs_extract_to_buf(call,
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSCallBack) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ fallthrough;
+
+ /* extract the metadata */
+ case 4:
+ ret = afs_extract_data(call, false);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+
+ req->data_version = vp->scb.status.data_version;
+ req->file_size = vp->scb.status.size;
+
+ call->unmarshall++;
+ fallthrough;
+
+ case 5:
+ break;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * YFS.FetchData64 operation type
+ */
+static const struct afs_call_type yfs_RXYFSFetchData64 = {
+ .name = "YFS.FetchData64",
+ .op = yfs_FS_FetchData64,
+ .deliver = yfs_deliver_fs_fetch_data64,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Fetch data from a file.
+ */
+void yfs_fs_fetch_data(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_read *req = op->fetch.req;
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter(",%x,{%llx:%llu},%llx,%llx",
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode,
+ req->pos, req->len);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchData64,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(struct yfs_xdr_u64) * 2,
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSCallBack) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ req->call_debug_id = call->debug_id;
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSFETCHDATA64);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ bp = xdr_encode_u64(bp, req->pos);
+ bp = xdr_encode_u64(bp, req->len);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data for YFS.CreateFile or YFS.MakeDir.
+ */
+static int yfs_deliver_fs_create_vnode(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[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;
+ xdr_decode_YFSFid(&bp, &op->file[1].fid);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.CreateFile and FS.MakeDir operation type
+ */
+static const struct afs_call_type afs_RXFSCreateFile = {
+ .name = "YFS.CreateFile",
+ .op = yfs_FS_CreateFile,
+ .deliver = yfs_deliver_fs_create_vnode,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Create a file.
+ */
+void yfs_fs_create_file(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_call *call;
+ size_t reqsz, rplsz;
+ __be32 *bp;
+
+ _enter("");
+
+ reqsz = (sizeof(__be32) +
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len) +
+ sizeof(struct yfs_xdr_YFSStoreStatus) +
+ sizeof(__be32));
+ rplsz = (sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSCallBack) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+
+ call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile, reqsz, rplsz);
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSCREATEFILE);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ bp = xdr_encode_YFSStoreStatus(bp, &op->create.mode, &op->mtime);
+ bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+static const struct afs_call_type yfs_RXFSMakeDir = {
+ .name = "YFS.MakeDir",
+ .op = yfs_FS_MakeDir,
+ .deliver = yfs_deliver_fs_create_vnode,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Make a directory.
+ */
+void yfs_fs_make_dir(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_call *call;
+ size_t reqsz, rplsz;
+ __be32 *bp;
+
+ _enter("");
+
+ reqsz = (sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len) +
+ sizeof(struct yfs_xdr_YFSStoreStatus));
+ rplsz = (sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSCallBack) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXFSMakeDir, reqsz, rplsz);
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSMAKEDIR);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ bp = xdr_encode_YFSStoreStatus(bp, &op->create.mode, &op->mtime);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data to a YFS.RemoveFile2 operation.
+ */
+static int yfs_deliver_fs_remove_file2(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
+ struct afs_fid fid;
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSFid(&bp, &fid);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ /* Was deleted if vnode->status.abort_code == VNOVNODE. */
+
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+ return 0;
+}
+
+static void yfs_done_fs_remove_file2(struct afs_call *call)
+{
+ if (call->error == -ECONNABORTED &&
+ call->abort_code == RX_INVALID_OPERATION) {
+ set_bit(AFS_SERVER_FL_NO_RM2, &call->server->flags);
+ call->op->flags |= AFS_OPERATION_DOWNGRADE;
+ }
+}
+
+/*
+ * YFS.RemoveFile2 operation type.
+ */
+static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
+ .name = "YFS.RemoveFile2",
+ .op = yfs_FS_RemoveFile2,
+ .deliver = yfs_deliver_fs_remove_file2,
+ .done = yfs_done_fs_remove_file2,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Remove a file and retrieve new file status.
+ */
+void yfs_fs_remove_file2(struct afs_operation *op)
+{
+ struct afs_vnode_param *dvp = &op->file[0];
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile2,
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation.
+ */
+static int yfs_deliver_fs_remove(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+ return 0;
+}
+
+/*
+ * FS.RemoveDir and FS.RemoveFile operation types.
+ */
+static const struct afs_call_type yfs_RXYFSRemoveFile = {
+ .name = "YFS.RemoveFile",
+ .op = yfs_FS_RemoveFile,
+ .deliver = yfs_deliver_fs_remove,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Remove a file.
+ */
+void yfs_fs_remove_file(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ if (!test_bit(AFS_SERVER_FL_NO_RM2, &op->server->flags))
+ return yfs_fs_remove_file2(op);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile,
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSREMOVEFILE);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+static const struct afs_call_type yfs_RXYFSRemoveDir = {
+ .name = "YFS.RemoveDir",
+ .op = yfs_FS_RemoveDir,
+ .deliver = yfs_deliver_fs_remove,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Remove a directory.
+ */
+void yfs_fs_remove_dir(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveDir,
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSREMOVEDIR);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data to a YFS.Link operation.
+ */
+static int yfs_deliver_fs_link(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * YFS.Link operation type.
+ */
+static const struct afs_call_type yfs_RXYFSLink = {
+ .name = "YFS.Link",
+ .op = yfs_FS_Link,
+ .deliver = yfs_deliver_fs_link,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Make a hard link.
+ */
+void yfs_fs_link(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSLink,
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len) +
+ sizeof(struct yfs_xdr_YFSFid),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSLINK);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call1(call, &vp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data to a YFS.Symlink operation.
+ */
+static int yfs_deliver_fs_symlink(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[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;
+ xdr_decode_YFSFid(&bp, &vp->fid);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * YFS.Symlink operation type
+ */
+static const struct afs_call_type yfs_RXYFSSymlink = {
+ .name = "YFS.Symlink",
+ .op = yfs_FS_Symlink,
+ .deliver = yfs_deliver_fs_symlink,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Create a symbolic link.
+ */
+void yfs_fs_symlink(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_call *call;
+ size_t contents_sz;
+ mode_t mode = 0777;
+ __be32 *bp;
+
+ _enter("");
+
+ contents_sz = strlen(op->create.symlink);
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSSymlink,
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len) +
+ xdr_strlen(contents_sz) +
+ sizeof(struct yfs_xdr_YFSStoreStatus),
+ sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSSYMLINK);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ bp = xdr_encode_string(bp, op->create.symlink, contents_sz);
+ bp = xdr_encode_YFSStoreStatus(bp, &mode, &op->mtime);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data to a YFS.Rename operation.
+ */
+static int yfs_deliver_fs_rename(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *orig_dvp = &op->file[0];
+ struct afs_vnode_param *new_dvp = &op->file[1];
+ const __be32 *bp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ /* If the two dirs are the same, we have two copies of the same status
+ * report, so we just decode it twice.
+ */
+ xdr_decode_YFSFetchStatus(&bp, call, &orig_dvp->scb);
+ xdr_decode_YFSFetchStatus(&bp, call, &new_dvp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * YFS.Rename operation type
+ */
+static const struct afs_call_type yfs_RXYFSRename = {
+ .name = "FS.Rename",
+ .op = yfs_FS_Rename,
+ .deliver = yfs_deliver_fs_rename,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Rename a file or directory.
+ */
+void yfs_fs_rename(struct afs_operation *op)
+{
+ struct afs_vnode_param *orig_dvp = &op->file[0];
+ struct afs_vnode_param *new_dvp = &op->file[1];
+ const struct qstr *orig_name = &op->dentry->d_name;
+ const struct qstr *new_name = &op->dentry_2->d_name;
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSRename,
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(orig_name->len) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(new_name->len),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSRENAME);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &orig_dvp->fid);
+ bp = xdr_encode_name(bp, orig_name);
+ bp = xdr_encode_YFSFid(bp, &new_dvp->fid);
+ bp = xdr_encode_name(bp, new_name);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * YFS.StoreData64 operation type.
+ */
+static const struct afs_call_type yfs_RXYFSStoreData64 = {
+ .name = "YFS.StoreData64",
+ .op = yfs_FS_StoreData64,
+ .deliver = yfs_deliver_status_and_volsync,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Store a set of pages to a large file.
+ */
+void yfs_fs_store_data(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter(",%x,{%llx:%llu},,",
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
+
+ _debug("size %llx, at %llx, i_size %llx",
+ (unsigned long long)op->store.size,
+ (unsigned long long)op->store.pos,
+ (unsigned long long)op->store.i_size);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64,
+ sizeof(__be32) +
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(struct yfs_xdr_YFSStoreStatus) +
+ sizeof(struct yfs_xdr_u64) * 3,
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ call->write_iter = op->store.write_iter;
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSSTOREDATA64);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ bp = xdr_encode_YFSStoreStatus(bp, NULL, &op->mtime);
+ bp = xdr_encode_u64(bp, op->store.pos);
+ bp = xdr_encode_u64(bp, op->store.size);
+ bp = xdr_encode_u64(bp, op->store.i_size);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * YFS.StoreStatus operation type
+ */
+static const struct afs_call_type yfs_RXYFSStoreStatus = {
+ .name = "YFS.StoreStatus",
+ .op = yfs_FS_StoreStatus,
+ .deliver = yfs_deliver_status_and_volsync,
+ .destructor = afs_flat_call_destructor,
+};
+
+static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = {
+ .name = "YFS.StoreData64",
+ .op = yfs_FS_StoreData64,
+ .deliver = yfs_deliver_status_and_volsync,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Set the attributes on a file, using YFS.StoreData64 rather than
+ * YFS.StoreStatus so as to alter the file size also.
+ */
+static void yfs_fs_setattr_size(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ struct iattr *attr = op->setattr.attr;
+ __be32 *bp;
+
+ _enter(",%x,{%llx:%llu},,",
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64_as_Status,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(struct yfs_xdr_YFSStoreStatus) +
+ sizeof(struct yfs_xdr_u64) * 3,
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSSTOREDATA64);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ bp = xdr_encode_YFS_StoreStatus(bp, attr);
+ bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */
+ bp = xdr_encode_u64(bp, 0); /* size of write */
+ bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Set the attributes on a file, using YFS.StoreData64 if there's a change in
+ * file size, and YFS.StoreStatus otherwise.
+ */
+void yfs_fs_setattr(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ struct iattr *attr = op->setattr.attr;
+ __be32 *bp;
+
+ if (attr->ia_valid & ATTR_SIZE)
+ return yfs_fs_setattr_size(op);
+
+ _enter(",%x,{%llx:%llu},,",
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreStatus,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(struct yfs_xdr_YFSStoreStatus),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSSTORESTATUS);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ bp = xdr_encode_YFS_StoreStatus(bp, attr);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data to a YFS.GetVolumeStatus operation.
+ */
+static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ const __be32 *bp;
+ char *p;
+ u32 size;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ switch (call->unmarshall) {
+ case 0:
+ call->unmarshall++;
+ afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus));
+ fallthrough;
+
+ /* extract the returned status record */
+ case 1:
+ _debug("extract status");
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ xdr_decode_YFSFetchVolumeStatus(&bp, &op->volstatus.vs);
+ call->unmarshall++;
+ afs_extract_to_tmp(call);
+ fallthrough;
+
+ /* extract the volume name length */
+ case 2:
+ ret = afs_extract_data(call, 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, afs_eproto_volname_len);
+ size = (call->count + 3) & ~3; /* It's padded */
+ afs_extract_to_buf(call, size);
+ call->unmarshall++;
+ fallthrough;
+
+ /* extract the volume name */
+ case 3:
+ _debug("extract volname");
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ p = call->buffer;
+ p[call->count] = 0;
+ _debug("volname '%s'", p);
+ afs_extract_to_tmp(call);
+ call->unmarshall++;
+ fallthrough;
+
+ /* extract the offline message length */
+ case 4:
+ ret = afs_extract_data(call, 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, afs_eproto_offline_msg_len);
+ size = (call->count + 3) & ~3; /* It's padded */
+ afs_extract_to_buf(call, size);
+ call->unmarshall++;
+ fallthrough;
+
+ /* extract the offline message */
+ case 5:
+ _debug("extract offline");
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ p = call->buffer;
+ p[call->count] = 0;
+ _debug("offline '%s'", p);
+
+ afs_extract_to_tmp(call);
+ call->unmarshall++;
+ fallthrough;
+
+ /* extract the message of the day length */
+ case 6:
+ ret = afs_extract_data(call, 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, afs_eproto_motd_len);
+ size = (call->count + 3) & ~3; /* It's padded */
+ afs_extract_to_buf(call, size);
+ call->unmarshall++;
+ fallthrough;
+
+ /* extract the message of the day */
+ case 7:
+ _debug("extract motd");
+ ret = afs_extract_data(call, false);
+ if (ret < 0)
+ return ret;
+
+ p = call->buffer;
+ p[call->count] = 0;
+ _debug("motd '%s'", p);
+
+ call->unmarshall++;
+ fallthrough;
+
+ case 8:
+ break;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * YFS.GetVolumeStatus operation type
+ */
+static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
+ .name = "YFS.GetVolumeStatus",
+ .op = yfs_FS_GetVolumeStatus,
+ .deliver = yfs_deliver_fs_get_volume_status,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * fetch the status of a volume
+ */
+void yfs_fs_get_volume_status(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSGetVolumeStatus,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_u64),
+ max_t(size_t,
+ sizeof(struct yfs_xdr_YFSFetchVolumeStatus) +
+ sizeof(__be32),
+ AFSOPAQUEMAX + 1));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_u64(bp, vp->fid.vid);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * YFS.SetLock operation type
+ */
+static const struct afs_call_type yfs_RXYFSSetLock = {
+ .name = "YFS.SetLock",
+ .op = yfs_FS_SetLock,
+ .deliver = yfs_deliver_status_and_volsync,
+ .done = afs_lock_op_done,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * YFS.ExtendLock operation type
+ */
+static const struct afs_call_type yfs_RXYFSExtendLock = {
+ .name = "YFS.ExtendLock",
+ .op = yfs_FS_ExtendLock,
+ .deliver = yfs_deliver_status_and_volsync,
+ .done = afs_lock_op_done,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * YFS.ReleaseLock operation type
+ */
+static const struct afs_call_type yfs_RXYFSReleaseLock = {
+ .name = "YFS.ReleaseLock",
+ .op = yfs_FS_ReleaseLock,
+ .deliver = yfs_deliver_status_and_volsync,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Set a lock on a file
+ */
+void yfs_fs_set_lock(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSSetLock,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(__be32),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSSETLOCK);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ bp = xdr_encode_u32(bp, op->lock.type);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_calli(call, &vp->fid, op->lock.type);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * extend a lock on a file
+ */
+void yfs_fs_extend_lock(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSExtendLock,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * release a lock on a file
+ */
+void yfs_fs_release_lock(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSReleaseLock,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSRELEASELOCK);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver a reply to YFS.FetchStatus
+ */
+static int yfs_deliver_fs_fetch_status(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
+ const __be32 *bp;
+ int ret;
+
+ 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_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * YFS.FetchStatus operation type
+ */
+static const struct afs_call_type yfs_RXYFSFetchStatus = {
+ .name = "YFS.FetchStatus",
+ .op = yfs_FS_FetchStatus,
+ .deliver = yfs_deliver_fs_fetch_status,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Fetch the status information for a fid without needing a vnode handle.
+ */
+void yfs_fs_fetch_status(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter(",%x,{%llx:%llu},,",
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchStatus,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSCallBack) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data to an YFS.InlineBulkStatus call
+ */
+static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_status_cb *scb;
+ const __be32 *bp;
+ u32 tmp;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ switch (call->unmarshall) {
+ case 0:
+ afs_extract_to_tmp(call);
+ call->unmarshall++;
+ fallthrough;
+
+ /* Extract the file status count and array in two steps */
+ case 1:
+ _debug("extract status count");
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ tmp = ntohl(call->tmp);
+ _debug("status count: %u/%u", tmp, op->nr_files);
+ if (tmp != op->nr_files)
+ return afs_protocol_error(call, afs_eproto_ibulkst_count);
+
+ call->count = 0;
+ call->unmarshall++;
+ more_counts:
+ afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus));
+ fallthrough;
+
+ case 2:
+ _debug("extract status array %u", call->count);
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ switch (call->count) {
+ case 0:
+ scb = &op->file[0].scb;
+ break;
+ case 1:
+ scb = &op->file[1].scb;
+ break;
+ default:
+ scb = &op->more_files[call->count - 2].scb;
+ break;
+ }
+
+ bp = call->buffer;
+ xdr_decode_YFSFetchStatus(&bp, call, scb);
+
+ call->count++;
+ if (call->count < op->nr_files)
+ goto more_counts;
+
+ call->count = 0;
+ call->unmarshall++;
+ afs_extract_to_tmp(call);
+ fallthrough;
+
+ /* Extract the callback count and array in two steps */
+ case 3:
+ _debug("extract CB count");
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ tmp = ntohl(call->tmp);
+ _debug("CB count: %u", tmp);
+ if (tmp != op->nr_files)
+ return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
+ call->count = 0;
+ call->unmarshall++;
+ more_cbs:
+ afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack));
+ fallthrough;
+
+ case 4:
+ _debug("extract CB array");
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ _debug("unmarshall CB array");
+ switch (call->count) {
+ case 0:
+ scb = &op->file[0].scb;
+ break;
+ case 1:
+ scb = &op->file[1].scb;
+ break;
+ default:
+ scb = &op->more_files[call->count - 2].scb;
+ break;
+ }
+
+ bp = call->buffer;
+ xdr_decode_YFSCallBack(&bp, call, scb);
+ call->count++;
+ if (call->count < op->nr_files)
+ goto more_cbs;
+
+ afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
+ call->unmarshall++;
+ fallthrough;
+
+ case 5:
+ ret = afs_extract_data(call, false);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+
+ call->unmarshall++;
+ fallthrough;
+
+ case 6:
+ break;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * FS.InlineBulkStatus operation type
+ */
+static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
+ .name = "YFS.InlineBulkStatus",
+ .op = yfs_FS_InlineBulkStatus,
+ .deliver = yfs_deliver_fs_inline_bulk_status,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Fetch the status information for up to 1024 files
+ */
+void yfs_fs_inline_bulk_status(struct afs_operation *op)
+{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
+ struct afs_call *call;
+ __be32 *bp;
+ int i;
+
+ _enter(",%x,{%llx:%llu},%u",
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSInlineBulkStatus,
+ sizeof(__be32) +
+ sizeof(__be32) +
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_YFSFid) * op->nr_files,
+ sizeof(struct yfs_xdr_YFSFetchStatus));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
+ bp = xdr_encode_u32(bp, 0); /* RPCFlags */
+ bp = xdr_encode_u32(bp, op->nr_files);
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ for (i = 0; i < op->nr_files - 2; i++)
+ bp = xdr_encode_YFSFid(bp, &op->more_files[i].fid);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver reply data to an YFS.FetchOpaqueACL.
+ */
+static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[0];
+ struct yfs_acl *yacl = op->yacl;
+ struct afs_acl *acl;
+ const __be32 *bp;
+ unsigned int size;
+ int ret;
+
+ _enter("{%u}", call->unmarshall);
+
+ switch (call->unmarshall) {
+ case 0:
+ afs_extract_to_tmp(call);
+ call->unmarshall++;
+ fallthrough;
+
+ /* Extract the file ACL length */
+ case 1:
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ size = call->count2 = ntohl(call->tmp);
+ size = round_up(size, 4);
+
+ if (yacl->flags & YFS_ACL_WANT_ACL) {
+ acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
+ if (!acl)
+ return -ENOMEM;
+ yacl->acl = acl;
+ acl->size = call->count2;
+ afs_extract_begin(call, acl->data, size);
+ } else {
+ afs_extract_discard(call, size);
+ }
+ call->unmarshall++;
+ fallthrough;
+
+ /* Extract the file ACL */
+ case 2:
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ afs_extract_to_tmp(call);
+ call->unmarshall++;
+ fallthrough;
+
+ /* Extract the volume ACL length */
+ case 3:
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ size = call->count2 = ntohl(call->tmp);
+ size = round_up(size, 4);
+
+ if (yacl->flags & YFS_ACL_WANT_VOL_ACL) {
+ acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
+ if (!acl)
+ return -ENOMEM;
+ yacl->vol_acl = acl;
+ acl->size = call->count2;
+ afs_extract_begin(call, acl->data, size);
+ } else {
+ afs_extract_discard(call, size);
+ }
+ call->unmarshall++;
+ fallthrough;
+
+ /* Extract the volume ACL */
+ case 4:
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ afs_extract_to_buf(call,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ call->unmarshall++;
+ fallthrough;
+
+ /* extract the metadata */
+ case 5:
+ ret = afs_extract_data(call, false);
+ if (ret < 0)
+ return ret;
+
+ bp = call->buffer;
+ yacl->inherit_flag = ntohl(*bp++);
+ yacl->num_cleaned = ntohl(*bp++);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+
+ call->unmarshall++;
+ fallthrough;
+
+ case 6:
+ break;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+void yfs_free_opaque_acl(struct yfs_acl *yacl)
+{
+ if (yacl) {
+ kfree(yacl->acl);
+ kfree(yacl->vol_acl);
+ kfree(yacl);
+ }
+}
+
+/*
+ * YFS.FetchOpaqueACL operation type
+ */
+static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = {
+ .name = "YFS.FetchOpaqueACL",
+ .op = yfs_FS_FetchOpaqueACL,
+ .deliver = yfs_deliver_fs_fetch_opaque_acl,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Fetch the YFS advanced ACLs for a file.
+ */
+void yfs_fs_fetch_opaque_acl(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter(",%x,{%llx:%llu},,",
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchOpaqueACL,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid),
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_KERNEL);
+}
+
+/*
+ * YFS.StoreOpaqueACL2 operation type
+ */
+static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = {
+ .name = "YFS.StoreOpaqueACL2",
+ .op = yfs_FS_StoreOpaqueACL2,
+ .deliver = yfs_deliver_status_and_volsync,
+ .destructor = afs_flat_call_destructor,
+};
+
+/*
+ * Fetch the YFS ACL for a file.
+ */
+void yfs_fs_store_opaque_acl2(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_call *call;
+ struct afs_acl *acl = op->acl;
+ size_t size;
+ __be32 *bp;
+
+ _enter(",%x,{%llx:%llu},,",
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
+
+ size = round_up(acl->size, 4);
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreOpaqueACL2,
+ sizeof(__be32) * 2 +
+ sizeof(struct yfs_xdr_YFSFid) +
+ sizeof(__be32) + size,
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ bp = xdr_encode_u32(bp, acl->size);
+ memcpy(bp, acl->data, acl->size);
+ if (acl->size != size)
+ memset((void *)bp + acl->size, 0, size - acl->size);
+ bp += size / sizeof(__be32);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_KERNEL);
+}