// SPDX-License-Identifier: GPL-2.0-or-later
|
/* AFS File Server client stubs
|
*
|
* Copyright (C) 2002, 2007 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>
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#include "internal.h"
|
#include "afs_fs.h"
|
#include "xdr_fs.h"
|
|
/*
|
* 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]));
|
}
|
|
/*
|
* decode an AFSFetchStatus block
|
*/
|
static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
|
struct afs_call *call,
|
struct afs_status_cb *scb)
|
{
|
const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
|
struct afs_file_status *status = &scb->status;
|
bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
|
u64 data_version, size;
|
u32 type, abort_code;
|
|
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;
|
scb->have_error = true;
|
goto advance;
|
}
|
|
pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
|
goto bad;
|
}
|
|
if (abort_code != 0 && inline_error) {
|
status->abort_code = abort_code;
|
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 = ntohl(xdr->author);
|
status->owner = ntohl(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 = ntohl(xdr->group);
|
status->lock_count = ntohl(xdr->lock_count);
|
|
status->mtime_client.tv_sec = ntohl(xdr->mtime_client);
|
status->mtime_client.tv_nsec = 0;
|
status->mtime_server.tv_sec = ntohl(xdr->mtime_server);
|
status->mtime_server.tv_nsec = 0;
|
|
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;
|
status->data_version = data_version;
|
scb->have_status = true;
|
advance:
|
*_bp = (const void *)*_bp + sizeof(*xdr);
|
return;
|
|
bad:
|
xdr_dump_bad(*_bp);
|
afs_protocol_error(call, afs_eproto_bad_status);
|
goto advance;
|
}
|
|
static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry)
|
{
|
return ktime_divns(call->issue_time, NSEC_PER_SEC) + expiry;
|
}
|
|
static void xdr_decode_AFSCallBack(const __be32 **_bp,
|
struct afs_call *call,
|
struct afs_status_cb *scb)
|
{
|
struct afs_callback *cb = &scb->callback;
|
const __be32 *bp = *_bp;
|
|
bp++; /* version */
|
cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++));
|
bp++; /* type */
|
scb->have_cb = true;
|
*_bp = bp;
|
}
|
|
/*
|
* decode an AFSVolSync block
|
*/
|
static void xdr_decode_AFSVolSync(const __be32 **_bp,
|
struct afs_volsync *volsync)
|
{
|
const __be32 *bp = *_bp;
|
u32 creation;
|
|
creation = ntohl(*bp++);
|
bp++; /* spare2 */
|
bp++; /* spare3 */
|
bp++; /* spare4 */
|
bp++; /* spare5 */
|
bp++; /* spare6 */
|
*_bp = bp;
|
|
if (volsync)
|
volsync->creation = creation;
|
}
|
|
/*
|
* 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++);
|
vs->vol_copy_date = 0;
|
vs->vol_backup_date = 0;
|
*_bp = bp;
|
}
|
|
/*
|
* deliver reply data to an FS.FetchStatus
|
*/
|
static int afs_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_AFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_AFSCallBack(&bp, call, &vp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->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 file
|
*/
|
void afs_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, &afs_RXFSFetchStatus,
|
16, (21 + 3 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp[0] = htonl(FSFETCHSTATUS);
|
bp[1] = htonl(vp->fid.vid);
|
bp[2] = htonl(vp->fid.vnode);
|
bp[3] = htonl(vp->fid.unique);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* deliver reply data to an FS.FetchData
|
*/
|
static int afs_deliver_fs_fetch_data(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;
|
unsigned int size;
|
int ret;
|
|
_enter("{%u,%zu/%llu}",
|
call->unmarshall, iov_iter_count(call->iter), req->actual_len);
|
|
switch (call->unmarshall) {
|
case 0:
|
req->actual_len = 0;
|
req->index = 0;
|
req->offset = req->pos & (PAGE_SIZE - 1);
|
call->unmarshall++;
|
if (call->operation_ID == FSFETCHDATA64) {
|
afs_extract_to_tmp64(call);
|
} else {
|
call->tmp_u = htonl(0);
|
afs_extract_to_tmp(call);
|
}
|
fallthrough;
|
|
/* extract the returned data length */
|
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);
|
req->remain = min(req->len, req->actual_len);
|
if (req->remain == 0)
|
goto no_more_data;
|
|
call->unmarshall++;
|
|
begin_page:
|
ASSERTCMP(req->index, <, req->nr_pages);
|
if (req->remain > PAGE_SIZE - req->offset)
|
size = PAGE_SIZE - req->offset;
|
else
|
size = req->remain;
|
call->bvec[0].bv_len = size;
|
call->bvec[0].bv_offset = req->offset;
|
call->bvec[0].bv_page = req->pages[req->index];
|
iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size);
|
ASSERTCMP(size, <=, PAGE_SIZE);
|
fallthrough;
|
|
/* extract the returned data */
|
case 2:
|
_debug("extract data %zu/%llu",
|
iov_iter_count(call->iter), req->remain);
|
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
req->remain -= call->bvec[0].bv_len;
|
req->offset += call->bvec[0].bv_len;
|
ASSERTCMP(req->offset, <=, PAGE_SIZE);
|
if (req->offset == PAGE_SIZE) {
|
req->offset = 0;
|
req->index++;
|
if (req->remain > 0)
|
goto begin_page;
|
}
|
|
ASSERTCMP(req->remain, ==, 0);
|
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, (21 + 3 + 6) * 4);
|
fallthrough;
|
|
/* extract the metadata */
|
case 4:
|
ret = afs_extract_data(call, false);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_AFSCallBack(&bp, call, &vp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
req->data_version = vp->scb.status.data_version;
|
req->file_size = vp->scb.status.size;
|
|
call->unmarshall++;
|
|
case 5:
|
break;
|
}
|
|
for (; req->index < req->nr_pages; req->index++) {
|
if (req->offset < PAGE_SIZE)
|
zero_user_segment(req->pages[req->index],
|
req->offset, PAGE_SIZE);
|
req->offset = 0;
|
}
|
|
if (req->page_done)
|
for (req->index = 0; req->index < req->nr_pages; req->index++)
|
req->page_done(req);
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* 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_flat_call_destructor,
|
};
|
|
static const struct afs_call_type afs_RXFSFetchData64 = {
|
.name = "FS.FetchData64",
|
.op = afs_FS_FetchData64,
|
.deliver = afs_deliver_fs_fetch_data,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* fetch data from a very large file
|
*/
|
static void afs_fs_fetch_data64(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("");
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp[0] = htonl(FSFETCHDATA64);
|
bp[1] = htonl(vp->fid.vid);
|
bp[2] = htonl(vp->fid.vnode);
|
bp[3] = htonl(vp->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));
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* fetch data from a file
|
*/
|
void afs_fs_fetch_data(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
struct afs_read *req = op->fetch.req;
|
__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(op);
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp[0] = htonl(FSFETCHDATA);
|
bp[1] = htonl(vp->fid.vid);
|
bp[2] = htonl(vp->fid.vnode);
|
bp[3] = htonl(vp->fid.unique);
|
bp[4] = htonl(lower_32_bits(req->pos));
|
bp[5] = htonl(lower_32_bits(req->len));
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* deliver reply data to an FS.CreateFile or an FS.MakeDir
|
*/
|
static int afs_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;
|
|
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, &op->file[1].fid);
|
xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
|
xdr_decode_AFSCallBack(&bp, call, &vp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
_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,
|
};
|
|
/*
|
* Create a file.
|
*/
|
void afs_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 namesz, reqsz, padsz;
|
__be32 *bp;
|
|
_enter("");
|
|
namesz = name->len;
|
padsz = (4 - (namesz & 3)) & 3;
|
reqsz = (5 * 4) + namesz + padsz + (6 * 4);
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile,
|
reqsz, (3 + 21 + 21 + 3 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSCREATEFILE);
|
*bp++ = htonl(dvp->fid.vid);
|
*bp++ = htonl(dvp->fid.vnode);
|
*bp++ = htonl(dvp->fid.unique);
|
*bp++ = htonl(namesz);
|
memcpy(bp, name->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(op->mtime.tv_sec); /* mtime */
|
*bp++ = 0; /* owner */
|
*bp++ = 0; /* group */
|
*bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
|
*bp++ = 0; /* segment size */
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
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 new directory
|
*/
|
void afs_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 namesz, reqsz, padsz;
|
__be32 *bp;
|
|
_enter("");
|
|
namesz = name->len;
|
padsz = (4 - (namesz & 3)) & 3;
|
reqsz = (5 * 4) + namesz + padsz + (6 * 4);
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSMakeDir,
|
reqsz, (3 + 21 + 21 + 3 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSMAKEDIR);
|
*bp++ = htonl(dvp->fid.vid);
|
*bp++ = htonl(dvp->fid.vnode);
|
*bp++ = htonl(dvp->fid.unique);
|
*bp++ = htonl(namesz);
|
memcpy(bp, name->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(op->mtime.tv_sec); /* mtime */
|
*bp++ = 0; /* owner */
|
*bp++ = 0; /* group */
|
*bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
|
*bp++ = 0; /* segment size */
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to any operation that returns status and volume sync.
|
*/
|
static int afs_deliver_fs_file_status_and_vol(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *vp = &op->file[0];
|
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_AFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* FS.RemoveFile operation type
|
*/
|
static const struct afs_call_type afs_RXFSRemoveFile = {
|
.name = "FS.RemoveFile",
|
.op = afs_FS_RemoveFile,
|
.deliver = afs_deliver_fs_file_status_and_vol,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Remove a file.
|
*/
|
void afs_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;
|
size_t namesz, reqsz, padsz;
|
__be32 *bp;
|
|
_enter("");
|
|
namesz = name->len;
|
padsz = (4 - (namesz & 3)) & 3;
|
reqsz = (5 * 4) + namesz + padsz;
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveFile,
|
reqsz, (21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSREMOVEFILE);
|
*bp++ = htonl(dvp->fid.vid);
|
*bp++ = htonl(dvp->fid.vnode);
|
*bp++ = htonl(dvp->fid.unique);
|
*bp++ = htonl(namesz);
|
memcpy(bp, name->name, namesz);
|
bp = (void *) bp + namesz;
|
if (padsz > 0) {
|
memset(bp, 0, padsz);
|
bp = (void *) bp + padsz;
|
}
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
static const struct afs_call_type afs_RXFSRemoveDir = {
|
.name = "FS.RemoveDir",
|
.op = afs_FS_RemoveDir,
|
.deliver = afs_deliver_fs_file_status_and_vol,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Remove a directory.
|
*/
|
void afs_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;
|
size_t namesz, reqsz, padsz;
|
__be32 *bp;
|
|
_enter("");
|
|
namesz = name->len;
|
padsz = (4 - (namesz & 3)) & 3;
|
reqsz = (5 * 4) + namesz + padsz;
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveDir,
|
reqsz, (21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSREMOVEDIR);
|
*bp++ = htonl(dvp->fid.vid);
|
*bp++ = htonl(dvp->fid.vnode);
|
*bp++ = htonl(dvp->fid.unique);
|
*bp++ = htonl(namesz);
|
memcpy(bp, name->name, namesz);
|
bp = (void *) bp + namesz;
|
if (padsz > 0) {
|
memset(bp, 0, padsz);
|
bp = (void *) bp + padsz;
|
}
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* deliver reply data to an FS.Link
|
*/
|
static int afs_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;
|
|
/* unmarshall the reply once we've received all of it */
|
bp = call->buffer;
|
xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
_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
|
*/
|
void afs_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;
|
size_t namesz, reqsz, padsz;
|
__be32 *bp;
|
|
_enter("");
|
|
namesz = name->len;
|
padsz = (4 - (namesz & 3)) & 3;
|
reqsz = (5 * 4) + namesz + padsz + (3 * 4);
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSLINK);
|
*bp++ = htonl(dvp->fid.vid);
|
*bp++ = htonl(dvp->fid.vnode);
|
*bp++ = htonl(dvp->fid.unique);
|
*bp++ = htonl(namesz);
|
memcpy(bp, name->name, namesz);
|
bp = (void *) bp + namesz;
|
if (padsz > 0) {
|
memset(bp, 0, padsz);
|
bp = (void *) bp + padsz;
|
}
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
|
trace_afs_make_fs_call1(call, &vp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* deliver reply data to an FS.Symlink
|
*/
|
static int afs_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_AFSFid(&bp, &vp->fid);
|
xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
_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
|
*/
|
void afs_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 namesz, reqsz, padsz, c_namesz, c_padsz;
|
__be32 *bp;
|
|
_enter("");
|
|
namesz = name->len;
|
padsz = (4 - (namesz & 3)) & 3;
|
|
c_namesz = strlen(op->create.symlink);
|
c_padsz = (4 - (c_namesz & 3)) & 3;
|
|
reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSSymlink, reqsz,
|
(3 + 21 + 21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSSYMLINK);
|
*bp++ = htonl(dvp->fid.vid);
|
*bp++ = htonl(dvp->fid.vnode);
|
*bp++ = htonl(dvp->fid.unique);
|
*bp++ = htonl(namesz);
|
memcpy(bp, name->name, namesz);
|
bp = (void *) bp + namesz;
|
if (padsz > 0) {
|
memset(bp, 0, padsz);
|
bp = (void *) bp + padsz;
|
}
|
*bp++ = htonl(c_namesz);
|
memcpy(bp, op->create.symlink, 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(op->mtime.tv_sec); /* mtime */
|
*bp++ = 0; /* owner */
|
*bp++ = 0; /* group */
|
*bp++ = htonl(S_IRWXUGO); /* unix mode */
|
*bp++ = 0; /* segment size */
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* deliver reply data to an FS.Rename
|
*/
|
static int afs_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;
|
|
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_AFSFetchStatus(&bp, call, &orig_dvp->scb);
|
xdr_decode_AFSFetchStatus(&bp, call, &new_dvp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
_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,
|
};
|
|
/*
|
* Rename/move a file or directory.
|
*/
|
void afs_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;
|
size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
|
__be32 *bp;
|
|
_enter("");
|
|
o_namesz = orig_name->len;
|
o_padsz = (4 - (o_namesz & 3)) & 3;
|
|
n_namesz = new_name->len;
|
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(op->net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSRENAME);
|
*bp++ = htonl(orig_dvp->fid.vid);
|
*bp++ = htonl(orig_dvp->fid.vnode);
|
*bp++ = htonl(orig_dvp->fid.unique);
|
*bp++ = htonl(o_namesz);
|
memcpy(bp, orig_name->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_dvp->fid.vid);
|
*bp++ = htonl(new_dvp->fid.vnode);
|
*bp++ = htonl(new_dvp->fid.unique);
|
*bp++ = htonl(n_namesz);
|
memcpy(bp, new_name->name, n_namesz);
|
bp = (void *) bp + n_namesz;
|
if (n_padsz > 0) {
|
memset(bp, 0, n_padsz);
|
bp = (void *) bp + n_padsz;
|
}
|
|
trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to FS.StoreData or FS.StoreStatus
|
*/
|
static int afs_deliver_fs_store_data(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *vp = &op->file[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;
|
xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
_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 void afs_fs_store_data64(struct afs_operation *op,
|
loff_t pos, loff_t size, loff_t i_size)
|
{
|
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, &afs_RXFSStoreData64,
|
(4 + 6 + 3 * 2) * 4,
|
(21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
call->send_pages = true;
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSSTOREDATA64);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
|
*bp++ = htonl(AFS_SET_MTIME); /* mask */
|
*bp++ = htonl(op->mtime.tv_sec); /* mtime */
|
*bp++ = 0; /* owner */
|
*bp++ = 0; /* group */
|
*bp++ = 0; /* unix mode */
|
*bp++ = 0; /* segment size */
|
|
*bp++ = htonl(upper_32_bits(pos));
|
*bp++ = htonl(lower_32_bits(pos));
|
*bp++ = htonl(upper_32_bits(size));
|
*bp++ = htonl(lower_32_bits(size));
|
*bp++ = htonl(upper_32_bits(i_size));
|
*bp++ = htonl(lower_32_bits(i_size));
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* store a set of pages
|
*/
|
void afs_fs_store_data(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
loff_t size, pos, i_size;
|
__be32 *bp;
|
|
_enter(",%x,{%llx:%llu},,",
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode);
|
|
size = (loff_t)op->store.last_to - (loff_t)op->store.first_offset;
|
if (op->store.first != op->store.last)
|
size += (loff_t)(op->store.last - op->store.first) << PAGE_SHIFT;
|
pos = (loff_t)op->store.first << PAGE_SHIFT;
|
pos += op->store.first_offset;
|
|
i_size = i_size_read(&vp->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 (upper_32_bits(pos) || upper_32_bits(i_size) || upper_32_bits(size) ||
|
upper_32_bits(pos + size))
|
return afs_fs_store_data64(op, pos, size, i_size);
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData,
|
(4 + 6 + 3) * 4,
|
(21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
call->send_pages = true;
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSSTOREDATA);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
|
*bp++ = htonl(AFS_SET_MTIME); /* mask */
|
*bp++ = htonl(op->mtime.tv_sec); /* mtime */
|
*bp++ = 0; /* owner */
|
*bp++ = 0; /* group */
|
*bp++ = 0; /* unix mode */
|
*bp++ = 0; /* segment size */
|
|
*bp++ = htonl(lower_32_bits(pos));
|
*bp++ = htonl(lower_32_bits(size));
|
*bp++ = htonl(lower_32_bits(i_size));
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* FS.StoreStatus operation type
|
*/
|
static const struct afs_call_type afs_RXFSStoreStatus = {
|
.name = "FS.StoreStatus",
|
.op = afs_FS_StoreStatus,
|
.deliver = afs_deliver_fs_store_data,
|
.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_data,
|
.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_data,
|
.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 void afs_fs_setattr_size64(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);
|
|
ASSERT(attr->ia_valid & ATTR_SIZE);
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64_as_Status,
|
(4 + 6 + 3 * 2) * 4,
|
(21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSSTOREDATA64);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
|
xdr_encode_AFS_StoreStatus(&bp, attr);
|
|
*bp++ = htonl(upper_32_bits(attr->ia_size)); /* position of start of write */
|
*bp++ = htonl(lower_32_bits(attr->ia_size));
|
*bp++ = 0; /* size of write */
|
*bp++ = 0;
|
*bp++ = htonl(upper_32_bits(attr->ia_size)); /* new file length */
|
*bp++ = htonl(lower_32_bits(attr->ia_size));
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
|
* so as to alter the file size also
|
*/
|
static void afs_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);
|
|
ASSERT(attr->ia_valid & ATTR_SIZE);
|
if (upper_32_bits(attr->ia_size))
|
return afs_fs_setattr_size64(op);
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData_as_Status,
|
(4 + 6 + 3) * 4,
|
(21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSSTOREDATA);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
|
xdr_encode_AFS_StoreStatus(&bp, attr);
|
|
*bp++ = htonl(attr->ia_size); /* position of start of write */
|
*bp++ = 0; /* size of write */
|
*bp++ = htonl(attr->ia_size); /* new file length */
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* set the attributes on a file, using FS.StoreData if there's a change in file
|
* size, and FS.StoreStatus otherwise
|
*/
|
void afs_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 afs_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, &afs_RXFSStoreStatus,
|
(4 + 6) * 4,
|
(21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSSTORESTATUS);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
|
xdr_encode_AFS_StoreStatus(&bp, op->setattr.attr);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* deliver reply data to an FS.GetVolumeStatus
|
*/
|
static int afs_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, 12 * 4);
|
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_AFSFetchVolumeStatus(&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++;
|
|
case 8:
|
break;
|
}
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* 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_flat_call_destructor,
|
};
|
|
/*
|
* fetch the status of a volume
|
*/
|
void afs_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, &afs_RXFSGetVolumeStatus, 2 * 4,
|
max(12 * 4, AFSOPAQUEMAX + 1));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp[0] = htonl(FSGETVOLUMESTATUS);
|
bp[1] = htonl(vp->fid.vid);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
|
*/
|
static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
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, &op->volsync);
|
|
_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,
|
.done = afs_lock_op_done,
|
.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,
|
.done = afs_lock_op_done,
|
.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
|
*/
|
void afs_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, &afs_RXFSSetLock, 5 * 4, 6 * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSSETLOCK);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
*bp++ = htonl(op->lock.type);
|
|
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 afs_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, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSEXTENDLOCK);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* release a lock on a file
|
*/
|
void afs_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, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSRELEASELOCK);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* 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);
|
|
call->server = afs_use_server(server, afs_server_trace_give_up_cb);
|
afs_make_call(ac, call, GFP_NOFS);
|
return afs_wait_for_call_to_complete(call, ac);
|
}
|
|
/*
|
* 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}", call->unmarshall, iov_iter_count(call->iter));
|
|
switch (call->unmarshall) {
|
case 0:
|
afs_extract_to_tmp(call);
|
call->unmarshall++;
|
fallthrough;
|
|
/* Extract the capabilities word count */
|
case 1:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
count = ntohl(call->tmp);
|
|
call->count = count;
|
call->count2 = count;
|
afs_extract_discard(call, count * sizeof(__be32));
|
call->unmarshall++;
|
fallthrough;
|
|
/* Extract capabilities words */
|
case 2:
|
ret = afs_extract_data(call, false);
|
if (ret < 0)
|
return ret;
|
|
/* TODO: Examine capabilities */
|
|
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,
|
.done = afs_fileserver_probe_result,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Probe a fileserver for the capabilities that it supports. This RPC can
|
* reply with up to 196 words. The operation is asynchronous and if we managed
|
* to allocate a call, true is returned the result is delivered through the
|
* ->done() - otherwise we return false to indicate we didn't even try.
|
*/
|
bool 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 false;
|
|
call->key = key;
|
call->server = afs_use_server(server, afs_server_trace_get_caps);
|
call->upgrade = true;
|
call->async = true;
|
call->max_lifespan = AFS_PROBE_MAX_LIFESPAN;
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSGETCAPABILITIES);
|
|
trace_afs_make_fs_call(call, NULL);
|
afs_make_call(ac, call, GFP_NOFS);
|
afs_put_call(call);
|
return true;
|
}
|
|
/*
|
* Deliver reply data to an FS.InlineBulkStatus call
|
*/
|
static int afs_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, 21 * sizeof(__be32));
|
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_AFSFetchStatus(&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, 3 * sizeof(__be32));
|
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_AFSCallBack(&bp, call, scb);
|
call->count++;
|
if (call->count < op->nr_files)
|
goto more_cbs;
|
|
afs_extract_to_buf(call, 6 * sizeof(__be32));
|
call->unmarshall++;
|
fallthrough;
|
|
case 5:
|
ret = afs_extract_data(call, false);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
call->unmarshall++;
|
|
case 6:
|
break;
|
}
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
static void afs_done_fs_inline_bulk_status(struct afs_call *call)
|
{
|
if (call->error == -ECONNABORTED &&
|
call->abort_code == RX_INVALID_OPERATION) {
|
set_bit(AFS_SERVER_FL_NO_IBULK, &call->server->flags);
|
if (call->op)
|
set_bit(AFS_VOLUME_MAYBE_NO_IBULK, &call->op->volume->flags);
|
}
|
}
|
|
/*
|
* 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,
|
.done = afs_done_fs_inline_bulk_status,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Fetch the status information for up to 50 files
|
*/
|
void afs_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;
|
|
if (test_bit(AFS_SERVER_FL_NO_IBULK, &op->server->flags)) {
|
op->error = -ENOTSUPP;
|
return;
|
}
|
|
_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, &afs_RXFSInlineBulkStatus,
|
(2 + op->nr_files * 3) * 4,
|
21 * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
*bp++ = htonl(FSINLINEBULKSTATUS);
|
*bp++ = htonl(op->nr_files);
|
*bp++ = htonl(dvp->fid.vid);
|
*bp++ = htonl(dvp->fid.vnode);
|
*bp++ = htonl(dvp->fid.unique);
|
*bp++ = htonl(vp->fid.vid);
|
*bp++ = htonl(vp->fid.vnode);
|
*bp++ = htonl(vp->fid.unique);
|
for (i = 0; i < op->nr_files - 2; i++) {
|
*bp++ = htonl(op->more_files[i].fid.vid);
|
*bp++ = htonl(op->more_files[i].fid.vnode);
|
*bp++ = htonl(op->more_files[i].fid.unique);
|
}
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* deliver reply data to an FS.FetchACL
|
*/
|
static int afs_deliver_fs_fetch_acl(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *vp = &op->file[0];
|
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 returned data 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);
|
|
acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
|
if (!acl)
|
return -ENOMEM;
|
op->acl = acl;
|
acl->size = call->count2;
|
afs_extract_begin(call, acl->data, size);
|
call->unmarshall++;
|
fallthrough;
|
|
/* extract the returned data */
|
case 2:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
afs_extract_to_buf(call, (21 + 6) * 4);
|
call->unmarshall++;
|
fallthrough;
|
|
/* extract the metadata */
|
case 3:
|
ret = afs_extract_data(call, false);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_AFSVolSync(&bp, &op->volsync);
|
|
call->unmarshall++;
|
|
case 4:
|
break;
|
}
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* FS.FetchACL operation type
|
*/
|
static const struct afs_call_type afs_RXFSFetchACL = {
|
.name = "FS.FetchACL",
|
.op = afs_FS_FetchACL,
|
.deliver = afs_deliver_fs_fetch_acl,
|
};
|
|
/*
|
* Fetch the ACL for a file.
|
*/
|
void afs_fs_fetch_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, &afs_RXFSFetchACL, 16, (21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp[0] = htonl(FSFETCHACL);
|
bp[1] = htonl(vp->fid.vid);
|
bp[2] = htonl(vp->fid.vnode);
|
bp[3] = htonl(vp->fid.unique);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_KERNEL);
|
}
|
|
/*
|
* FS.StoreACL operation type
|
*/
|
static const struct afs_call_type afs_RXFSStoreACL = {
|
.name = "FS.StoreACL",
|
.op = afs_FS_StoreACL,
|
.deliver = afs_deliver_fs_file_status_and_vol,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Fetch the ACL for a file.
|
*/
|
void afs_fs_store_acl(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
const 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, &afs_RXFSStoreACL,
|
5 * 4 + size, (21 + 6) * 4);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp[0] = htonl(FSSTOREACL);
|
bp[1] = htonl(vp->fid.vid);
|
bp[2] = htonl(vp->fid.vnode);
|
bp[3] = htonl(vp->fid.unique);
|
bp[4] = htonl(acl->size);
|
memcpy(&bp[5], acl->data, acl->size);
|
if (acl->size != size)
|
memset((void *)&bp[5] + acl->size, 0, size - acl->size);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_KERNEL);
|
}
|
