mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 10:04:12 +08:00
35773c9381
Pull AFS updates from Al Viro: "Assorted AFS stuff - ended up in vfs.git since most of that consists of David's AFS-related followups to Christoph's procfs series" * 'afs-proc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: afs: Optimise callback breaking by not repeating volume lookup afs: Display manually added cells in dynamic root mount afs: Enable IPv6 DNS lookups afs: Show all of a server's addresses in /proc/fs/afs/servers afs: Handle CONFIG_PROC_FS=n proc: Make inline name size calculation automatic afs: Implement network namespacing afs: Mark afs_net::ws_cell as __rcu and set using rcu functions afs: Fix a Sparse warning in xdr_decode_AFSFetchStatus() proc: Add a way to make network proc files writable afs: Rearrange fs/afs/proc.c to remove remaining predeclarations. afs: Rearrange fs/afs/proc.c to move the show routines up afs: Rearrange fs/afs/proc.c by moving fops and open functions down afs: Move /proc management functions to the end of the file
2353 lines
56 KiB
C
2353 lines
56 KiB
C
/* AFS File Server client stubs
|
|
*
|
|
* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/circ_buf.h>
|
|
#include <linux/iversion.h>
|
|
#include "internal.h"
|
|
#include "afs_fs.h"
|
|
#include "xdr_fs.h"
|
|
|
|
static const struct afs_fid afs_zero_fid;
|
|
|
|
/*
|
|
* We need somewhere to discard into in case the server helpfully returns more
|
|
* than we asked for in FS.FetchData{,64}.
|
|
*/
|
|
static u8 afs_discard_buffer[64];
|
|
|
|
static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
|
|
{
|
|
call->cbi = afs_get_cb_interest(cbi);
|
|
}
|
|
|
|
/*
|
|
* decode an AFSFid block
|
|
*/
|
|
static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
|
|
{
|
|
const __be32 *bp = *_bp;
|
|
|
|
fid->vid = ntohl(*bp++);
|
|
fid->vnode = ntohl(*bp++);
|
|
fid->unique = ntohl(*bp++);
|
|
*_bp = bp;
|
|
}
|
|
|
|
/*
|
|
* Dump a bad file status record.
|
|
*/
|
|
static void xdr_dump_bad(const __be32 *bp)
|
|
{
|
|
__be32 x[4];
|
|
int i;
|
|
|
|
pr_notice("AFS XDR: Bad status record\n");
|
|
for (i = 0; i < 5 * 4 * 4; i += 16) {
|
|
memcpy(x, bp, 16);
|
|
bp += 4;
|
|
pr_notice("%03x: %08x %08x %08x %08x\n",
|
|
i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
|
|
}
|
|
|
|
memcpy(x, bp, 4);
|
|
pr_notice("0x50: %08x\n", ntohl(x[0]));
|
|
}
|
|
|
|
/*
|
|
* Update the core inode struct from a returned status record.
|
|
*/
|
|
void afs_update_inode_from_status(struct afs_vnode *vnode,
|
|
struct afs_file_status *status,
|
|
const afs_dataversion_t *expected_version,
|
|
u8 flags)
|
|
{
|
|
struct timespec64 t;
|
|
umode_t mode;
|
|
|
|
t.tv_sec = status->mtime_client;
|
|
t.tv_nsec = 0;
|
|
vnode->vfs_inode.i_ctime = t;
|
|
vnode->vfs_inode.i_mtime = t;
|
|
vnode->vfs_inode.i_atime = t;
|
|
|
|
if (flags & (AFS_VNODE_META_CHANGED | AFS_VNODE_NOT_YET_SET)) {
|
|
vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner);
|
|
vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group);
|
|
set_nlink(&vnode->vfs_inode, status->nlink);
|
|
|
|
mode = vnode->vfs_inode.i_mode;
|
|
mode &= ~S_IALLUGO;
|
|
mode |= status->mode;
|
|
barrier();
|
|
vnode->vfs_inode.i_mode = mode;
|
|
}
|
|
|
|
if (!(flags & AFS_VNODE_NOT_YET_SET)) {
|
|
if (expected_version &&
|
|
*expected_version != status->data_version) {
|
|
_debug("vnode modified %llx on {%x:%u} [exp %llx]",
|
|
(unsigned long long) status->data_version,
|
|
vnode->fid.vid, vnode->fid.vnode,
|
|
(unsigned long long) *expected_version);
|
|
vnode->invalid_before = status->data_version;
|
|
if (vnode->status.type == AFS_FTYPE_DIR) {
|
|
if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
|
|
afs_stat_v(vnode, n_inval);
|
|
} else {
|
|
set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
|
|
}
|
|
} else if (vnode->status.type == AFS_FTYPE_DIR) {
|
|
/* Expected directory change is handled elsewhere so
|
|
* that we can locally edit the directory and save on a
|
|
* download.
|
|
*/
|
|
if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
|
|
flags &= ~AFS_VNODE_DATA_CHANGED;
|
|
}
|
|
}
|
|
|
|
if (flags & (AFS_VNODE_DATA_CHANGED | AFS_VNODE_NOT_YET_SET)) {
|
|
inode_set_iversion_raw(&vnode->vfs_inode, status->data_version);
|
|
i_size_write(&vnode->vfs_inode, status->size);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* decode an AFSFetchStatus block
|
|
*/
|
|
static int xdr_decode_AFSFetchStatus(struct afs_call *call,
|
|
const __be32 **_bp,
|
|
struct afs_file_status *status,
|
|
struct afs_vnode *vnode,
|
|
const afs_dataversion_t *expected_version,
|
|
struct afs_read *read_req)
|
|
{
|
|
const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
|
|
bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
|
|
u64 data_version, size;
|
|
u32 type, abort_code;
|
|
u8 flags = 0;
|
|
|
|
abort_code = ntohl(xdr->abort_code);
|
|
|
|
if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
|
|
if (xdr->if_version == htonl(0) &&
|
|
abort_code != 0 &&
|
|
inline_error) {
|
|
/* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
|
|
* whereby it doesn't set the interface version in the error
|
|
* case.
|
|
*/
|
|
status->abort_code = abort_code;
|
|
return 0;
|
|
}
|
|
|
|
pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
|
|
goto bad;
|
|
}
|
|
|
|
if (abort_code != 0 && inline_error) {
|
|
status->abort_code = abort_code;
|
|
return 0;
|
|
}
|
|
|
|
type = ntohl(xdr->type);
|
|
switch (type) {
|
|
case AFS_FTYPE_FILE:
|
|
case AFS_FTYPE_DIR:
|
|
case AFS_FTYPE_SYMLINK:
|
|
if (type != status->type &&
|
|
vnode &&
|
|
!test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
|
|
pr_warning("Vnode %x:%x:%x changed type %u to %u\n",
|
|
vnode->fid.vid,
|
|
vnode->fid.vnode,
|
|
vnode->fid.unique,
|
|
status->type, type);
|
|
goto bad;
|
|
}
|
|
status->type = type;
|
|
break;
|
|
default:
|
|
goto bad;
|
|
}
|
|
|
|
#define EXTRACT_M(FIELD) \
|
|
do { \
|
|
u32 x = ntohl(xdr->FIELD); \
|
|
if (status->FIELD != x) { \
|
|
flags |= AFS_VNODE_META_CHANGED; \
|
|
status->FIELD = x; \
|
|
} \
|
|
} while (0)
|
|
|
|
EXTRACT_M(nlink);
|
|
EXTRACT_M(author);
|
|
EXTRACT_M(owner);
|
|
EXTRACT_M(caller_access); /* call ticket dependent */
|
|
EXTRACT_M(anon_access);
|
|
EXTRACT_M(mode);
|
|
EXTRACT_M(group);
|
|
|
|
status->mtime_client = ntohl(xdr->mtime_client);
|
|
status->mtime_server = ntohl(xdr->mtime_server);
|
|
status->lock_count = ntohl(xdr->lock_count);
|
|
|
|
size = (u64)ntohl(xdr->size_lo);
|
|
size |= (u64)ntohl(xdr->size_hi) << 32;
|
|
status->size = size;
|
|
|
|
data_version = (u64)ntohl(xdr->data_version_lo);
|
|
data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
|
|
if (data_version != status->data_version) {
|
|
status->data_version = data_version;
|
|
flags |= AFS_VNODE_DATA_CHANGED;
|
|
}
|
|
|
|
if (read_req) {
|
|
read_req->data_version = data_version;
|
|
read_req->file_size = size;
|
|
}
|
|
|
|
*_bp = (const void *)*_bp + sizeof(*xdr);
|
|
|
|
if (vnode) {
|
|
if (test_bit(AFS_VNODE_UNSET, &vnode->flags))
|
|
flags |= AFS_VNODE_NOT_YET_SET;
|
|
afs_update_inode_from_status(vnode, status, expected_version,
|
|
flags);
|
|
}
|
|
|
|
return 0;
|
|
|
|
bad:
|
|
xdr_dump_bad(*_bp);
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
}
|
|
|
|
/*
|
|
* Decode the file status. We need to lock the target vnode if we're going to
|
|
* update its status so that stat() sees the attributes update atomically.
|
|
*/
|
|
static int afs_decode_status(struct afs_call *call,
|
|
const __be32 **_bp,
|
|
struct afs_file_status *status,
|
|
struct afs_vnode *vnode,
|
|
const afs_dataversion_t *expected_version,
|
|
struct afs_read *read_req)
|
|
{
|
|
int ret;
|
|
|
|
if (!vnode)
|
|
return xdr_decode_AFSFetchStatus(call, _bp, status, vnode,
|
|
expected_version, read_req);
|
|
|
|
write_seqlock(&vnode->cb_lock);
|
|
ret = xdr_decode_AFSFetchStatus(call, _bp, status, vnode,
|
|
expected_version, read_req);
|
|
write_sequnlock(&vnode->cb_lock);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* decode an AFSCallBack block
|
|
*/
|
|
static void xdr_decode_AFSCallBack(struct afs_call *call,
|
|
struct afs_vnode *vnode,
|
|
const __be32 **_bp)
|
|
{
|
|
struct afs_cb_interest *old, *cbi = call->cbi;
|
|
const __be32 *bp = *_bp;
|
|
u32 cb_expiry;
|
|
|
|
write_seqlock(&vnode->cb_lock);
|
|
|
|
if (call->cb_break == afs_cb_break_sum(vnode, cbi)) {
|
|
vnode->cb_version = ntohl(*bp++);
|
|
cb_expiry = ntohl(*bp++);
|
|
vnode->cb_type = ntohl(*bp++);
|
|
vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds();
|
|
old = vnode->cb_interest;
|
|
if (old != call->cbi) {
|
|
vnode->cb_interest = cbi;
|
|
cbi = old;
|
|
}
|
|
set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
|
|
} else {
|
|
bp += 3;
|
|
}
|
|
|
|
write_sequnlock(&vnode->cb_lock);
|
|
call->cbi = cbi;
|
|
*_bp = bp;
|
|
}
|
|
|
|
static void xdr_decode_AFSCallBack_raw(const __be32 **_bp,
|
|
struct afs_callback *cb)
|
|
{
|
|
const __be32 *bp = *_bp;
|
|
|
|
cb->version = ntohl(*bp++);
|
|
cb->expiry = ntohl(*bp++);
|
|
cb->type = ntohl(*bp++);
|
|
*_bp = bp;
|
|
}
|
|
|
|
/*
|
|
* decode an AFSVolSync block
|
|
*/
|
|
static void xdr_decode_AFSVolSync(const __be32 **_bp,
|
|
struct afs_volsync *volsync)
|
|
{
|
|
const __be32 *bp = *_bp;
|
|
|
|
volsync->creation = ntohl(*bp++);
|
|
bp++; /* spare2 */
|
|
bp++; /* spare3 */
|
|
bp++; /* spare4 */
|
|
bp++; /* spare5 */
|
|
bp++; /* spare6 */
|
|
*_bp = bp;
|
|
}
|
|
|
|
/*
|
|
* encode the requested attributes into an AFSStoreStatus block
|
|
*/
|
|
static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
|
|
{
|
|
__be32 *bp = *_bp;
|
|
u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0;
|
|
|
|
mask = 0;
|
|
if (attr->ia_valid & ATTR_MTIME) {
|
|
mask |= AFS_SET_MTIME;
|
|
mtime = attr->ia_mtime.tv_sec;
|
|
}
|
|
|
|
if (attr->ia_valid & ATTR_UID) {
|
|
mask |= AFS_SET_OWNER;
|
|
owner = from_kuid(&init_user_ns, attr->ia_uid);
|
|
}
|
|
|
|
if (attr->ia_valid & ATTR_GID) {
|
|
mask |= AFS_SET_GROUP;
|
|
group = from_kgid(&init_user_ns, attr->ia_gid);
|
|
}
|
|
|
|
if (attr->ia_valid & ATTR_MODE) {
|
|
mask |= AFS_SET_MODE;
|
|
mode = attr->ia_mode & S_IALLUGO;
|
|
}
|
|
|
|
*bp++ = htonl(mask);
|
|
*bp++ = htonl(mtime);
|
|
*bp++ = htonl(owner);
|
|
*bp++ = htonl(group);
|
|
*bp++ = htonl(mode);
|
|
*bp++ = 0; /* segment size */
|
|
*_bp = bp;
|
|
}
|
|
|
|
/*
|
|
* decode an AFSFetchVolumeStatus block
|
|
*/
|
|
static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
|
|
struct afs_volume_status *vs)
|
|
{
|
|
const __be32 *bp = *_bp;
|
|
|
|
vs->vid = ntohl(*bp++);
|
|
vs->parent_id = ntohl(*bp++);
|
|
vs->online = ntohl(*bp++);
|
|
vs->in_service = ntohl(*bp++);
|
|
vs->blessed = ntohl(*bp++);
|
|
vs->needs_salvage = ntohl(*bp++);
|
|
vs->type = ntohl(*bp++);
|
|
vs->min_quota = ntohl(*bp++);
|
|
vs->max_quota = ntohl(*bp++);
|
|
vs->blocks_in_use = ntohl(*bp++);
|
|
vs->part_blocks_avail = ntohl(*bp++);
|
|
vs->part_max_blocks = ntohl(*bp++);
|
|
*_bp = bp;
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.FetchStatus
|
|
*/
|
|
static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
_enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
if (afs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
xdr_decode_AFSCallBack(call, vnode, &bp);
|
|
if (call->reply[1])
|
|
xdr_decode_AFSVolSync(&bp, call->reply[1]);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.FetchStatus operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSFetchStatus_vnode = {
|
|
.name = "FS.FetchStatus(vnode)",
|
|
.op = afs_FS_FetchStatus,
|
|
.deliver = afs_deliver_fs_fetch_status_vnode,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* fetch the status information for a file
|
|
*/
|
|
int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync,
|
|
bool new_inode)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus_vnode,
|
|
16, (21 + 3 + 6) * 4);
|
|
if (!call) {
|
|
fc->ac.error = -ENOMEM;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = volsync;
|
|
call->expected_version = new_inode ? 1 : vnode->status.data_version;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp[0] = htonl(FSFETCHSTATUS);
|
|
bp[1] = htonl(vnode->fid.vid);
|
|
bp[2] = htonl(vnode->fid.vnode);
|
|
bp[3] = htonl(vnode->fid.unique);
|
|
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.FetchData
|
|
*/
|
|
static int afs_deliver_fs_fetch_data(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
struct afs_read *req = call->reply[2];
|
|
const __be32 *bp;
|
|
unsigned int size;
|
|
void *buffer;
|
|
int ret;
|
|
|
|
_enter("{%u,%zu/%u;%llu/%llu}",
|
|
call->unmarshall, call->offset, call->count,
|
|
req->remain, req->actual_len);
|
|
|
|
switch (call->unmarshall) {
|
|
case 0:
|
|
req->actual_len = 0;
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
if (call->operation_ID != FSFETCHDATA64) {
|
|
call->unmarshall++;
|
|
goto no_msw;
|
|
}
|
|
|
|
/* extract the upper part of the returned data length of an
|
|
* FSFETCHDATA64 op (which should always be 0 using this
|
|
* client) */
|
|
case 1:
|
|
_debug("extract data length (MSW)");
|
|
ret = afs_extract_data(call, &call->tmp, 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
req->actual_len = ntohl(call->tmp);
|
|
req->actual_len <<= 32;
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
no_msw:
|
|
/* extract the returned data length */
|
|
case 2:
|
|
_debug("extract data length");
|
|
ret = afs_extract_data(call, &call->tmp, 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
req->actual_len |= ntohl(call->tmp);
|
|
_debug("DATA length: %llu", req->actual_len);
|
|
|
|
req->remain = req->actual_len;
|
|
call->offset = req->pos & (PAGE_SIZE - 1);
|
|
req->index = 0;
|
|
if (req->actual_len == 0)
|
|
goto no_more_data;
|
|
call->unmarshall++;
|
|
|
|
begin_page:
|
|
ASSERTCMP(req->index, <, req->nr_pages);
|
|
if (req->remain > PAGE_SIZE - call->offset)
|
|
size = PAGE_SIZE - call->offset;
|
|
else
|
|
size = req->remain;
|
|
call->count = call->offset + size;
|
|
ASSERTCMP(call->count, <=, PAGE_SIZE);
|
|
req->remain -= size;
|
|
|
|
/* extract the returned data */
|
|
case 3:
|
|
_debug("extract data %llu/%llu %zu/%u",
|
|
req->remain, req->actual_len, call->offset, call->count);
|
|
|
|
buffer = kmap(req->pages[req->index]);
|
|
ret = afs_extract_data(call, buffer, call->count, true);
|
|
kunmap(req->pages[req->index]);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (call->offset == PAGE_SIZE) {
|
|
if (req->page_done)
|
|
req->page_done(call, req);
|
|
req->index++;
|
|
if (req->remain > 0) {
|
|
call->offset = 0;
|
|
if (req->index >= req->nr_pages) {
|
|
call->unmarshall = 4;
|
|
goto begin_discard;
|
|
}
|
|
goto begin_page;
|
|
}
|
|
}
|
|
goto no_more_data;
|
|
|
|
/* Discard any excess data the server gave us */
|
|
begin_discard:
|
|
case 4:
|
|
size = min_t(loff_t, sizeof(afs_discard_buffer), req->remain);
|
|
call->count = size;
|
|
_debug("extract discard %llu/%llu %zu/%u",
|
|
req->remain, req->actual_len, call->offset, call->count);
|
|
|
|
call->offset = 0;
|
|
ret = afs_extract_data(call, afs_discard_buffer, call->count, true);
|
|
req->remain -= call->offset;
|
|
if (ret < 0)
|
|
return ret;
|
|
if (req->remain > 0)
|
|
goto begin_discard;
|
|
|
|
no_more_data:
|
|
call->offset = 0;
|
|
call->unmarshall = 5;
|
|
|
|
/* extract the metadata */
|
|
case 5:
|
|
ret = afs_extract_data(call, call->buffer,
|
|
(21 + 3 + 6) * 4, false);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bp = call->buffer;
|
|
if (afs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&vnode->status.data_version, req) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
xdr_decode_AFSCallBack(call, vnode, &bp);
|
|
if (call->reply[1])
|
|
xdr_decode_AFSVolSync(&bp, call->reply[1]);
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
case 6:
|
|
break;
|
|
}
|
|
|
|
for (; req->index < req->nr_pages; req->index++) {
|
|
if (call->count < PAGE_SIZE)
|
|
zero_user_segment(req->pages[req->index],
|
|
call->count, PAGE_SIZE);
|
|
if (req->page_done)
|
|
req->page_done(call, req);
|
|
call->count = 0;
|
|
}
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
static void afs_fetch_data_destructor(struct afs_call *call)
|
|
{
|
|
struct afs_read *req = call->reply[2];
|
|
|
|
afs_put_read(req);
|
|
afs_flat_call_destructor(call);
|
|
}
|
|
|
|
/*
|
|
* FS.FetchData operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSFetchData = {
|
|
.name = "FS.FetchData",
|
|
.op = afs_FS_FetchData,
|
|
.deliver = afs_deliver_fs_fetch_data,
|
|
.destructor = afs_fetch_data_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSFetchData64 = {
|
|
.name = "FS.FetchData64",
|
|
.op = afs_FS_FetchData64,
|
|
.deliver = afs_deliver_fs_fetch_data,
|
|
.destructor = afs_fetch_data_destructor,
|
|
};
|
|
|
|
/*
|
|
* fetch data from a very large file
|
|
*/
|
|
static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = NULL; /* volsync */
|
|
call->reply[2] = req;
|
|
call->expected_version = vnode->status.data_version;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp[0] = htonl(FSFETCHDATA64);
|
|
bp[1] = htonl(vnode->fid.vid);
|
|
bp[2] = htonl(vnode->fid.vnode);
|
|
bp[3] = htonl(vnode->fid.unique);
|
|
bp[4] = htonl(upper_32_bits(req->pos));
|
|
bp[5] = htonl(lower_32_bits(req->pos));
|
|
bp[6] = 0;
|
|
bp[7] = htonl(lower_32_bits(req->len));
|
|
|
|
refcount_inc(&req->usage);
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* fetch data from a file
|
|
*/
|
|
int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
if (upper_32_bits(req->pos) ||
|
|
upper_32_bits(req->len) ||
|
|
upper_32_bits(req->pos + req->len))
|
|
return afs_fs_fetch_data64(fc, req);
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = NULL; /* volsync */
|
|
call->reply[2] = req;
|
|
call->expected_version = vnode->status.data_version;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp[0] = htonl(FSFETCHDATA);
|
|
bp[1] = htonl(vnode->fid.vid);
|
|
bp[2] = htonl(vnode->fid.vnode);
|
|
bp[3] = htonl(vnode->fid.unique);
|
|
bp[4] = htonl(lower_32_bits(req->pos));
|
|
bp[5] = htonl(lower_32_bits(req->len));
|
|
|
|
refcount_inc(&req->usage);
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.CreateFile or an FS.MakeDir
|
|
*/
|
|
static int afs_deliver_fs_create_vnode(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFid(&bp, call->reply[1]);
|
|
if (afs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL) < 0 ||
|
|
afs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
xdr_decode_AFSCallBack_raw(&bp, call->reply[3]);
|
|
/* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.CreateFile and FS.MakeDir operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSCreateFile = {
|
|
.name = "FS.CreateFile",
|
|
.op = afs_FS_CreateFile,
|
|
.deliver = afs_deliver_fs_create_vnode,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSMakeDir = {
|
|
.name = "FS.MakeDir",
|
|
.op = afs_FS_MakeDir,
|
|
.deliver = afs_deliver_fs_create_vnode,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* create a file or make a directory
|
|
*/
|
|
int afs_fs_create(struct afs_fs_cursor *fc,
|
|
const char *name,
|
|
umode_t mode,
|
|
u64 current_data_version,
|
|
struct afs_fid *newfid,
|
|
struct afs_file_status *newstatus,
|
|
struct afs_callback *newcb)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
size_t namesz, reqsz, padsz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
padsz = (4 - (namesz & 3)) & 3;
|
|
reqsz = (5 * 4) + namesz + padsz + (6 * 4);
|
|
|
|
call = afs_alloc_flat_call(
|
|
net, S_ISDIR(mode) ? &afs_RXFSMakeDir : &afs_RXFSCreateFile,
|
|
reqsz, (3 + 21 + 21 + 3 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = newfid;
|
|
call->reply[2] = newstatus;
|
|
call->reply[3] = newcb;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
*bp++ = htonl(namesz);
|
|
memcpy(bp, name, namesz);
|
|
bp = (void *) bp + namesz;
|
|
if (padsz > 0) {
|
|
memset(bp, 0, padsz);
|
|
bp = (void *) bp + padsz;
|
|
}
|
|
*bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
|
|
*bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
|
|
*bp++ = 0; /* owner */
|
|
*bp++ = 0; /* group */
|
|
*bp++ = htonl(mode & S_IALLUGO); /* unix mode */
|
|
*bp++ = 0; /* segment size */
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.RemoveFile or FS.RemoveDir
|
|
*/
|
|
static int afs_deliver_fs_remove(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
if (afs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
/* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.RemoveDir/FS.RemoveFile operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSRemoveFile = {
|
|
.name = "FS.RemoveFile",
|
|
.op = afs_FS_RemoveFile,
|
|
.deliver = afs_deliver_fs_remove,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSRemoveDir = {
|
|
.name = "FS.RemoveDir",
|
|
.op = afs_FS_RemoveDir,
|
|
.deliver = afs_deliver_fs_remove,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* remove a file or directory
|
|
*/
|
|
int afs_fs_remove(struct afs_fs_cursor *fc, const char *name, bool isdir,
|
|
u64 current_data_version)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
size_t namesz, reqsz, padsz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
padsz = (4 - (namesz & 3)) & 3;
|
|
reqsz = (5 * 4) + namesz + padsz;
|
|
|
|
call = afs_alloc_flat_call(
|
|
net, isdir ? &afs_RXFSRemoveDir : &afs_RXFSRemoveFile,
|
|
reqsz, (21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
*bp++ = htonl(namesz);
|
|
memcpy(bp, name, namesz);
|
|
bp = (void *) bp + namesz;
|
|
if (padsz > 0) {
|
|
memset(bp, 0, padsz);
|
|
bp = (void *) bp + padsz;
|
|
}
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.Link
|
|
*/
|
|
static int afs_deliver_fs_link(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
if (afs_decode_status(call, &bp, &vnode->status, vnode, NULL, NULL) < 0 ||
|
|
afs_decode_status(call, &bp, &dvnode->status, dvnode,
|
|
&call->expected_version, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
/* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.Link operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSLink = {
|
|
.name = "FS.Link",
|
|
.op = afs_FS_Link,
|
|
.deliver = afs_deliver_fs_link,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* make a hard link
|
|
*/
|
|
int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
|
|
const char *name, u64 current_data_version)
|
|
{
|
|
struct afs_vnode *dvnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
size_t namesz, reqsz, padsz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
padsz = (4 - (namesz & 3)) & 3;
|
|
reqsz = (5 * 4) + namesz + padsz + (3 * 4);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = dvnode;
|
|
call->reply[1] = vnode;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSLINK);
|
|
*bp++ = htonl(dvnode->fid.vid);
|
|
*bp++ = htonl(dvnode->fid.vnode);
|
|
*bp++ = htonl(dvnode->fid.unique);
|
|
*bp++ = htonl(namesz);
|
|
memcpy(bp, name, namesz);
|
|
bp = (void *) bp + namesz;
|
|
if (padsz > 0) {
|
|
memset(bp, 0, padsz);
|
|
bp = (void *) bp + padsz;
|
|
}
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.Symlink
|
|
*/
|
|
static int afs_deliver_fs_symlink(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFid(&bp, call->reply[1]);
|
|
if (afs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL) ||
|
|
afs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
/* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.Symlink operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSSymlink = {
|
|
.name = "FS.Symlink",
|
|
.op = afs_FS_Symlink,
|
|
.deliver = afs_deliver_fs_symlink,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* create a symbolic link
|
|
*/
|
|
int afs_fs_symlink(struct afs_fs_cursor *fc,
|
|
const char *name,
|
|
const char *contents,
|
|
u64 current_data_version,
|
|
struct afs_fid *newfid,
|
|
struct afs_file_status *newstatus)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
size_t namesz, reqsz, padsz, c_namesz, c_padsz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
padsz = (4 - (namesz & 3)) & 3;
|
|
|
|
c_namesz = strlen(contents);
|
|
c_padsz = (4 - (c_namesz & 3)) & 3;
|
|
|
|
reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSSymlink, reqsz,
|
|
(3 + 21 + 21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = newfid;
|
|
call->reply[2] = newstatus;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSSYMLINK);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
*bp++ = htonl(namesz);
|
|
memcpy(bp, name, namesz);
|
|
bp = (void *) bp + namesz;
|
|
if (padsz > 0) {
|
|
memset(bp, 0, padsz);
|
|
bp = (void *) bp + padsz;
|
|
}
|
|
*bp++ = htonl(c_namesz);
|
|
memcpy(bp, contents, c_namesz);
|
|
bp = (void *) bp + c_namesz;
|
|
if (c_padsz > 0) {
|
|
memset(bp, 0, c_padsz);
|
|
bp = (void *) bp + c_padsz;
|
|
}
|
|
*bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
|
|
*bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
|
|
*bp++ = 0; /* owner */
|
|
*bp++ = 0; /* group */
|
|
*bp++ = htonl(S_IRWXUGO); /* unix mode */
|
|
*bp++ = 0; /* segment size */
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.Rename
|
|
*/
|
|
static int afs_deliver_fs_rename(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *orig_dvnode = call->reply[0], *new_dvnode = call->reply[1];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
if (afs_decode_status(call, &bp, &orig_dvnode->status, orig_dvnode,
|
|
&call->expected_version, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
if (new_dvnode != orig_dvnode &&
|
|
afs_decode_status(call, &bp, &new_dvnode->status, new_dvnode,
|
|
&call->expected_version_2, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
/* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.Rename operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSRename = {
|
|
.name = "FS.Rename",
|
|
.op = afs_FS_Rename,
|
|
.deliver = afs_deliver_fs_rename,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* create a symbolic link
|
|
*/
|
|
int afs_fs_rename(struct afs_fs_cursor *fc,
|
|
const char *orig_name,
|
|
struct afs_vnode *new_dvnode,
|
|
const char *new_name,
|
|
u64 current_orig_data_version,
|
|
u64 current_new_data_version)
|
|
{
|
|
struct afs_vnode *orig_dvnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(orig_dvnode);
|
|
size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
o_namesz = strlen(orig_name);
|
|
o_padsz = (4 - (o_namesz & 3)) & 3;
|
|
|
|
n_namesz = strlen(new_name);
|
|
n_padsz = (4 - (n_namesz & 3)) & 3;
|
|
|
|
reqsz = (4 * 4) +
|
|
4 + o_namesz + o_padsz +
|
|
(3 * 4) +
|
|
4 + n_namesz + n_padsz;
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = orig_dvnode;
|
|
call->reply[1] = new_dvnode;
|
|
call->expected_version = current_orig_data_version + 1;
|
|
call->expected_version_2 = current_new_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSRENAME);
|
|
*bp++ = htonl(orig_dvnode->fid.vid);
|
|
*bp++ = htonl(orig_dvnode->fid.vnode);
|
|
*bp++ = htonl(orig_dvnode->fid.unique);
|
|
*bp++ = htonl(o_namesz);
|
|
memcpy(bp, orig_name, o_namesz);
|
|
bp = (void *) bp + o_namesz;
|
|
if (o_padsz > 0) {
|
|
memset(bp, 0, o_padsz);
|
|
bp = (void *) bp + o_padsz;
|
|
}
|
|
|
|
*bp++ = htonl(new_dvnode->fid.vid);
|
|
*bp++ = htonl(new_dvnode->fid.vnode);
|
|
*bp++ = htonl(new_dvnode->fid.unique);
|
|
*bp++ = htonl(n_namesz);
|
|
memcpy(bp, new_name, n_namesz);
|
|
bp = (void *) bp + n_namesz;
|
|
if (n_padsz > 0) {
|
|
memset(bp, 0, n_padsz);
|
|
bp = (void *) bp + n_padsz;
|
|
}
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &orig_dvnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.StoreData
|
|
*/
|
|
static int afs_deliver_fs_store_data(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("");
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
if (afs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
/* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
|
|
|
|
afs_pages_written_back(vnode, call);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.StoreData operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSStoreData = {
|
|
.name = "FS.StoreData",
|
|
.op = afs_FS_StoreData,
|
|
.deliver = afs_deliver_fs_store_data,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSStoreData64 = {
|
|
.name = "FS.StoreData64",
|
|
.op = afs_FS_StoreData64,
|
|
.deliver = afs_deliver_fs_store_data,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* store a set of pages to a very large file
|
|
*/
|
|
static int afs_fs_store_data64(struct afs_fs_cursor *fc,
|
|
struct address_space *mapping,
|
|
pgoff_t first, pgoff_t last,
|
|
unsigned offset, unsigned to,
|
|
loff_t size, loff_t pos, loff_t i_size)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSStoreData64,
|
|
(4 + 6 + 3 * 2) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->mapping = mapping;
|
|
call->reply[0] = vnode;
|
|
call->first = first;
|
|
call->last = last;
|
|
call->first_offset = offset;
|
|
call->last_to = to;
|
|
call->send_pages = true;
|
|
call->expected_version = vnode->status.data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSSTOREDATA64);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
*bp++ = htonl(AFS_SET_MTIME); /* mask */
|
|
*bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
|
|
*bp++ = 0; /* owner */
|
|
*bp++ = 0; /* group */
|
|
*bp++ = 0; /* unix mode */
|
|
*bp++ = 0; /* segment size */
|
|
|
|
*bp++ = htonl(pos >> 32);
|
|
*bp++ = htonl((u32) pos);
|
|
*bp++ = htonl(size >> 32);
|
|
*bp++ = htonl((u32) size);
|
|
*bp++ = htonl(i_size >> 32);
|
|
*bp++ = htonl((u32) i_size);
|
|
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* store a set of pages
|
|
*/
|
|
int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
|
|
pgoff_t first, pgoff_t last,
|
|
unsigned offset, unsigned to)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
loff_t size, pos, i_size;
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
size = (loff_t)to - (loff_t)offset;
|
|
if (first != last)
|
|
size += (loff_t)(last - first) << PAGE_SHIFT;
|
|
pos = (loff_t)first << PAGE_SHIFT;
|
|
pos += offset;
|
|
|
|
i_size = i_size_read(&vnode->vfs_inode);
|
|
if (pos + size > i_size)
|
|
i_size = size + pos;
|
|
|
|
_debug("size %llx, at %llx, i_size %llx",
|
|
(unsigned long long) size, (unsigned long long) pos,
|
|
(unsigned long long) i_size);
|
|
|
|
if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32)
|
|
return afs_fs_store_data64(fc, mapping, first, last, offset, to,
|
|
size, pos, i_size);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSStoreData,
|
|
(4 + 6 + 3) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->mapping = mapping;
|
|
call->reply[0] = vnode;
|
|
call->first = first;
|
|
call->last = last;
|
|
call->first_offset = offset;
|
|
call->last_to = to;
|
|
call->send_pages = true;
|
|
call->expected_version = vnode->status.data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSSTOREDATA);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
*bp++ = htonl(AFS_SET_MTIME); /* mask */
|
|
*bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
|
|
*bp++ = 0; /* owner */
|
|
*bp++ = 0; /* group */
|
|
*bp++ = 0; /* unix mode */
|
|
*bp++ = 0; /* segment size */
|
|
|
|
*bp++ = htonl(pos);
|
|
*bp++ = htonl(size);
|
|
*bp++ = htonl(i_size);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.StoreStatus
|
|
*/
|
|
static int afs_deliver_fs_store_status(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("");
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
if (afs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
/* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.StoreStatus operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSStoreStatus = {
|
|
.name = "FS.StoreStatus",
|
|
.op = afs_FS_StoreStatus,
|
|
.deliver = afs_deliver_fs_store_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSStoreData_as_Status = {
|
|
.name = "FS.StoreData",
|
|
.op = afs_FS_StoreData,
|
|
.deliver = afs_deliver_fs_store_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
|
|
.name = "FS.StoreData64",
|
|
.op = afs_FS_StoreData64,
|
|
.deliver = afs_deliver_fs_store_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* set the attributes on a very large file, using FS.StoreData rather than
|
|
* FS.StoreStatus so as to alter the file size also
|
|
*/
|
|
static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
ASSERT(attr->ia_valid & ATTR_SIZE);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status,
|
|
(4 + 6 + 3 * 2) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->expected_version = vnode->status.data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSSTOREDATA64);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
xdr_encode_AFS_StoreStatus(&bp, attr);
|
|
|
|
*bp++ = 0; /* position of start of write */
|
|
*bp++ = 0;
|
|
*bp++ = 0; /* size of write */
|
|
*bp++ = 0;
|
|
*bp++ = htonl(attr->ia_size >> 32); /* new file length */
|
|
*bp++ = htonl((u32) attr->ia_size);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
|
|
* so as to alter the file size also
|
|
*/
|
|
static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
ASSERT(attr->ia_valid & ATTR_SIZE);
|
|
if (attr->ia_size >> 32)
|
|
return afs_fs_setattr_size64(fc, attr);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status,
|
|
(4 + 6 + 3) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->expected_version = vnode->status.data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSSTOREDATA);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
xdr_encode_AFS_StoreStatus(&bp, attr);
|
|
|
|
*bp++ = 0; /* position of start of write */
|
|
*bp++ = 0; /* size of write */
|
|
*bp++ = htonl(attr->ia_size); /* new file length */
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* set the attributes on a file, using FS.StoreData if there's a change in file
|
|
* size, and FS.StoreStatus otherwise
|
|
*/
|
|
int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
if (attr->ia_valid & ATTR_SIZE)
|
|
return afs_fs_setattr_size(fc, attr);
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus,
|
|
(4 + 6) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->expected_version = vnode->status.data_version;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSSTORESTATUS);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
xdr_encode_AFS_StoreStatus(&bp, attr);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.GetVolumeStatus
|
|
*/
|
|
static int afs_deliver_fs_get_volume_status(struct afs_call *call)
|
|
{
|
|
const __be32 *bp;
|
|
char *p;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
switch (call->unmarshall) {
|
|
case 0:
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the returned status record */
|
|
case 1:
|
|
_debug("extract status");
|
|
ret = afs_extract_data(call, call->buffer,
|
|
12 * 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFetchVolumeStatus(&bp, call->reply[1]);
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the volume name length */
|
|
case 2:
|
|
ret = afs_extract_data(call, &call->tmp, 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("volname length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the volume name */
|
|
case 3:
|
|
_debug("extract volname");
|
|
if (call->count > 0) {
|
|
ret = afs_extract_data(call, call->reply[2],
|
|
call->count, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
p = call->reply[2];
|
|
p[call->count] = 0;
|
|
_debug("volname '%s'", p);
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the volume name padding */
|
|
if ((call->count & 3) == 0) {
|
|
call->unmarshall++;
|
|
goto no_volname_padding;
|
|
}
|
|
call->count = 4 - (call->count & 3);
|
|
|
|
case 4:
|
|
ret = afs_extract_data(call, call->buffer,
|
|
call->count, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
no_volname_padding:
|
|
|
|
/* extract the offline message length */
|
|
case 5:
|
|
ret = afs_extract_data(call, &call->tmp, 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("offline msg length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the offline message */
|
|
case 6:
|
|
_debug("extract offline");
|
|
if (call->count > 0) {
|
|
ret = afs_extract_data(call, call->reply[2],
|
|
call->count, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
p = call->reply[2];
|
|
p[call->count] = 0;
|
|
_debug("offline '%s'", p);
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the offline message padding */
|
|
if ((call->count & 3) == 0) {
|
|
call->unmarshall++;
|
|
goto no_offline_padding;
|
|
}
|
|
call->count = 4 - (call->count & 3);
|
|
|
|
case 7:
|
|
ret = afs_extract_data(call, call->buffer,
|
|
call->count, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
no_offline_padding:
|
|
|
|
/* extract the message of the day length */
|
|
case 8:
|
|
ret = afs_extract_data(call, &call->tmp, 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("motd length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the message of the day */
|
|
case 9:
|
|
_debug("extract motd");
|
|
if (call->count > 0) {
|
|
ret = afs_extract_data(call, call->reply[2],
|
|
call->count, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
p = call->reply[2];
|
|
p[call->count] = 0;
|
|
_debug("motd '%s'", p);
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the message of the day padding */
|
|
call->count = (4 - (call->count & 3)) & 3;
|
|
|
|
case 10:
|
|
ret = afs_extract_data(call, call->buffer,
|
|
call->count, false);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
case 11:
|
|
break;
|
|
}
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* destroy an FS.GetVolumeStatus call
|
|
*/
|
|
static void afs_get_volume_status_call_destructor(struct afs_call *call)
|
|
{
|
|
kfree(call->reply[2]);
|
|
call->reply[2] = NULL;
|
|
afs_flat_call_destructor(call);
|
|
}
|
|
|
|
/*
|
|
* FS.GetVolumeStatus operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSGetVolumeStatus = {
|
|
.name = "FS.GetVolumeStatus",
|
|
.op = afs_FS_GetVolumeStatus,
|
|
.deliver = afs_deliver_fs_get_volume_status,
|
|
.destructor = afs_get_volume_status_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* fetch the status of a volume
|
|
*/
|
|
int afs_fs_get_volume_status(struct afs_fs_cursor *fc,
|
|
struct afs_volume_status *vs)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
void *tmpbuf;
|
|
|
|
_enter("");
|
|
|
|
tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
|
|
if (!tmpbuf)
|
|
return -ENOMEM;
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4);
|
|
if (!call) {
|
|
kfree(tmpbuf);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = vs;
|
|
call->reply[2] = tmpbuf;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp[0] = htonl(FSGETVOLUMESTATUS);
|
|
bp[1] = htonl(vnode->fid.vid);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
|
|
*/
|
|
static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
|
|
{
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
/* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.SetLock operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSSetLock = {
|
|
.name = "FS.SetLock",
|
|
.op = afs_FS_SetLock,
|
|
.deliver = afs_deliver_fs_xxxx_lock,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* FS.ExtendLock operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSExtendLock = {
|
|
.name = "FS.ExtendLock",
|
|
.op = afs_FS_ExtendLock,
|
|
.deliver = afs_deliver_fs_xxxx_lock,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* FS.ReleaseLock operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSReleaseLock = {
|
|
.name = "FS.ReleaseLock",
|
|
.op = afs_FS_ReleaseLock,
|
|
.deliver = afs_deliver_fs_xxxx_lock,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Set a lock on a file
|
|
*/
|
|
int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSSETLOCK);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
*bp++ = htonl(type);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* extend a lock on a file
|
|
*/
|
|
int afs_fs_extend_lock(struct afs_fs_cursor *fc)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSEXTENDLOCK);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* release a lock on a file
|
|
*/
|
|
int afs_fs_release_lock(struct afs_fs_cursor *fc)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSRELEASELOCK);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to an FS.GiveUpAllCallBacks operation.
|
|
*/
|
|
static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call)
|
|
{
|
|
return afs_transfer_reply(call);
|
|
}
|
|
|
|
/*
|
|
* FS.GiveUpAllCallBacks operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = {
|
|
.name = "FS.GiveUpAllCallBacks",
|
|
.op = afs_FS_GiveUpAllCallBacks,
|
|
.deliver = afs_deliver_fs_give_up_all_callbacks,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Flush all the callbacks we have on a server.
|
|
*/
|
|
int afs_fs_give_up_all_callbacks(struct afs_net *net,
|
|
struct afs_server *server,
|
|
struct afs_addr_cursor *ac,
|
|
struct key *key)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSGIVEUPALLCALLBACKS);
|
|
|
|
/* Can't take a ref on server */
|
|
return afs_make_call(ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to an FS.GetCapabilities operation.
|
|
*/
|
|
static int afs_deliver_fs_get_capabilities(struct afs_call *call)
|
|
{
|
|
u32 count;
|
|
int ret;
|
|
|
|
_enter("{%u,%zu/%u}", call->unmarshall, call->offset, call->count);
|
|
|
|
again:
|
|
switch (call->unmarshall) {
|
|
case 0:
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* Extract the capabilities word count */
|
|
case 1:
|
|
ret = afs_extract_data(call, &call->tmp,
|
|
1 * sizeof(__be32),
|
|
true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
count = ntohl(call->tmp);
|
|
|
|
call->count = count;
|
|
call->count2 = count;
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* Extract capabilities words */
|
|
case 2:
|
|
count = min(call->count, 16U);
|
|
ret = afs_extract_data(call, call->buffer,
|
|
count * sizeof(__be32),
|
|
call->count > 16);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* TODO: Examine capabilities */
|
|
|
|
call->count -= count;
|
|
if (call->count > 0)
|
|
goto again;
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
break;
|
|
}
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.GetCapabilities operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSGetCapabilities = {
|
|
.name = "FS.GetCapabilities",
|
|
.op = afs_FS_GetCapabilities,
|
|
.deliver = afs_deliver_fs_get_capabilities,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Probe a fileserver for the capabilities that it supports. This can
|
|
* return up to 196 words.
|
|
*/
|
|
int afs_fs_get_capabilities(struct afs_net *net,
|
|
struct afs_server *server,
|
|
struct afs_addr_cursor *ac,
|
|
struct key *key)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSGETCAPABILITIES);
|
|
|
|
/* Can't take a ref on server */
|
|
trace_afs_make_fs_call(call, NULL);
|
|
return afs_make_call(ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to an FS.FetchStatus with no vnode.
|
|
*/
|
|
static int afs_deliver_fs_fetch_status(struct afs_call *call)
|
|
{
|
|
struct afs_file_status *status = call->reply[1];
|
|
struct afs_callback *callback = call->reply[2];
|
|
struct afs_volsync *volsync = call->reply[3];
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
_enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
afs_decode_status(call, &bp, status, vnode,
|
|
&call->expected_version, NULL);
|
|
callback[call->count].version = ntohl(bp[0]);
|
|
callback[call->count].expiry = ntohl(bp[1]);
|
|
callback[call->count].type = ntohl(bp[2]);
|
|
if (vnode)
|
|
xdr_decode_AFSCallBack(call, vnode, &bp);
|
|
else
|
|
bp += 3;
|
|
if (volsync)
|
|
xdr_decode_AFSVolSync(&bp, volsync);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.FetchStatus operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSFetchStatus = {
|
|
.name = "FS.FetchStatus",
|
|
.op = afs_FS_FetchStatus,
|
|
.deliver = afs_deliver_fs_fetch_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Fetch the status information for a fid without needing a vnode handle.
|
|
*/
|
|
int afs_fs_fetch_status(struct afs_fs_cursor *fc,
|
|
struct afs_net *net,
|
|
struct afs_fid *fid,
|
|
struct afs_file_status *status,
|
|
struct afs_callback *callback,
|
|
struct afs_volsync *volsync)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(fc->key), fid->vid, fid->vnode);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4);
|
|
if (!call) {
|
|
fc->ac.error = -ENOMEM;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = NULL; /* vnode for fid[0] */
|
|
call->reply[1] = status;
|
|
call->reply[2] = callback;
|
|
call->reply[3] = volsync;
|
|
call->expected_version = 1; /* vnode->status.data_version */
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp[0] = htonl(FSFETCHSTATUS);
|
|
bp[1] = htonl(fid->vid);
|
|
bp[2] = htonl(fid->vnode);
|
|
bp[3] = htonl(fid->unique);
|
|
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to an FS.InlineBulkStatus call
|
|
*/
|
|
static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
|
|
{
|
|
struct afs_file_status *statuses;
|
|
struct afs_callback *callbacks;
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
u32 tmp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
switch (call->unmarshall) {
|
|
case 0:
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* Extract the file status count and array in two steps */
|
|
case 1:
|
|
_debug("extract status count");
|
|
ret = afs_extract_data(call, &call->tmp, 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
tmp = ntohl(call->tmp);
|
|
_debug("status count: %u/%u", tmp, call->count2);
|
|
if (tmp != call->count2)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
|
|
call->count = 0;
|
|
call->unmarshall++;
|
|
more_counts:
|
|
call->offset = 0;
|
|
|
|
case 2:
|
|
_debug("extract status array %u", call->count);
|
|
ret = afs_extract_data(call, call->buffer, 21 * 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bp = call->buffer;
|
|
statuses = call->reply[1];
|
|
if (afs_decode_status(call, &bp, &statuses[call->count],
|
|
call->count == 0 ? vnode : NULL,
|
|
NULL, NULL) < 0)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
|
|
call->count++;
|
|
if (call->count < call->count2)
|
|
goto more_counts;
|
|
|
|
call->count = 0;
|
|
call->unmarshall++;
|
|
call->offset = 0;
|
|
|
|
/* Extract the callback count and array in two steps */
|
|
case 3:
|
|
_debug("extract CB count");
|
|
ret = afs_extract_data(call, &call->tmp, 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
tmp = ntohl(call->tmp);
|
|
_debug("CB count: %u", tmp);
|
|
if (tmp != call->count2)
|
|
return afs_protocol_error(call, -EBADMSG);
|
|
call->count = 0;
|
|
call->unmarshall++;
|
|
more_cbs:
|
|
call->offset = 0;
|
|
|
|
case 4:
|
|
_debug("extract CB array");
|
|
ret = afs_extract_data(call, call->buffer, 3 * 4, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
_debug("unmarshall CB array");
|
|
bp = call->buffer;
|
|
callbacks = call->reply[2];
|
|
callbacks[call->count].version = ntohl(bp[0]);
|
|
callbacks[call->count].expiry = ntohl(bp[1]);
|
|
callbacks[call->count].type = ntohl(bp[2]);
|
|
statuses = call->reply[1];
|
|
if (call->count == 0 && vnode && statuses[0].abort_code == 0)
|
|
xdr_decode_AFSCallBack(call, vnode, &bp);
|
|
call->count++;
|
|
if (call->count < call->count2)
|
|
goto more_cbs;
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
case 5:
|
|
ret = afs_extract_data(call, call->buffer, 6 * 4, false);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bp = call->buffer;
|
|
if (call->reply[3])
|
|
xdr_decode_AFSVolSync(&bp, call->reply[3]);
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
case 6:
|
|
break;
|
|
}
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.InlineBulkStatus operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSInlineBulkStatus = {
|
|
.name = "FS.InlineBulkStatus",
|
|
.op = afs_FS_InlineBulkStatus,
|
|
.deliver = afs_deliver_fs_inline_bulk_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Fetch the status information for up to 50 files
|
|
*/
|
|
int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
|
|
struct afs_net *net,
|
|
struct afs_fid *fids,
|
|
struct afs_file_status *statuses,
|
|
struct afs_callback *callbacks,
|
|
unsigned int nr_fids,
|
|
struct afs_volsync *volsync)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
int i;
|
|
|
|
_enter(",%x,{%x:%u},%u",
|
|
key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSInlineBulkStatus,
|
|
(2 + nr_fids * 3) * 4,
|
|
21 * 4);
|
|
if (!call) {
|
|
fc->ac.error = -ENOMEM;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = NULL; /* vnode for fid[0] */
|
|
call->reply[1] = statuses;
|
|
call->reply[2] = callbacks;
|
|
call->reply[3] = volsync;
|
|
call->count2 = nr_fids;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSINLINEBULKSTATUS);
|
|
*bp++ = htonl(nr_fids);
|
|
for (i = 0; i < nr_fids; i++) {
|
|
*bp++ = htonl(fids[i].vid);
|
|
*bp++ = htonl(fids[i].vnode);
|
|
*bp++ = htonl(fids[i].unique);
|
|
}
|
|
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &fids[0]);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|