// SPDX-License-Identifier: GPL-2.0-or-later
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/* YFS File Server client stubs
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*
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* Copyright (C) 2018 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*/
|
|
#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/sched.h>
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#include <linux/circ_buf.h>
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#include <linux/iversion.h>
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#include "internal.h"
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#include "afs_fs.h"
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#include "xdr_fs.h"
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#include "protocol_yfs.h"
|
|
#define xdr_size(x) (sizeof(*x) / sizeof(__be32))
|
|
static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid)
|
{
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const struct yfs_xdr_YFSFid *x = (const void *)*_bp;
|
|
fid->vid = xdr_to_u64(x->volume);
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fid->vnode = xdr_to_u64(x->vnode.lo);
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fid->vnode_hi = ntohl(x->vnode.hi);
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fid->unique = ntohl(x->vnode.unique);
|
*_bp += xdr_size(x);
|
}
|
|
static __be32 *xdr_encode_u32(__be32 *bp, u32 n)
|
{
|
*bp++ = htonl(n);
|
return bp;
|
}
|
|
static __be32 *xdr_encode_u64(__be32 *bp, u64 n)
|
{
|
struct yfs_xdr_u64 *x = (void *)bp;
|
|
*x = u64_to_xdr(n);
|
return bp + xdr_size(x);
|
}
|
|
static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid)
|
{
|
struct yfs_xdr_YFSFid *x = (void *)bp;
|
|
x->volume = u64_to_xdr(fid->vid);
|
x->vnode.lo = u64_to_xdr(fid->vnode);
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x->vnode.hi = htonl(fid->vnode_hi);
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x->vnode.unique = htonl(fid->unique);
|
return bp + xdr_size(x);
|
}
|
|
static size_t xdr_strlen(unsigned int len)
|
{
|
return sizeof(__be32) + round_up(len, sizeof(__be32));
|
}
|
|
static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len)
|
{
|
bp = xdr_encode_u32(bp, len);
|
bp = memcpy(bp, p, len);
|
if (len & 3) {
|
unsigned int pad = 4 - (len & 3);
|
|
memset((u8 *)bp + len, 0, pad);
|
len += pad;
|
}
|
|
return bp + len / sizeof(__be32);
|
}
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|
static __be32 *xdr_encode_name(__be32 *bp, const struct qstr *p)
|
{
|
return xdr_encode_string(bp, p->name, p->len);
|
}
|
|
static s64 linux_to_yfs_time(const struct timespec64 *t)
|
{
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/* Convert to 100ns intervals. */
|
return (u64)t->tv_sec * 10000000 + t->tv_nsec/100;
|
}
|
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static __be32 *xdr_encode_YFSStoreStatus_mode(__be32 *bp, mode_t mode)
|
{
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struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
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|
x->mask = htonl(AFS_SET_MODE);
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x->mode = htonl(mode & S_IALLUGO);
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x->mtime_client = u64_to_xdr(0);
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x->owner = u64_to_xdr(0);
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x->group = u64_to_xdr(0);
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return bp + xdr_size(x);
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}
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static __be32 *xdr_encode_YFSStoreStatus_mtime(__be32 *bp, const struct timespec64 *t)
|
{
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struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
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s64 mtime = linux_to_yfs_time(t);
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|
x->mask = htonl(AFS_SET_MTIME);
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x->mode = htonl(0);
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x->mtime_client = u64_to_xdr(mtime);
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x->owner = u64_to_xdr(0);
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x->group = u64_to_xdr(0);
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return bp + xdr_size(x);
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}
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/*
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* Convert a signed 100ns-resolution 64-bit time into a timespec.
|
*/
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static struct timespec64 yfs_time_to_linux(s64 t)
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{
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struct timespec64 ts;
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u64 abs_t;
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/*
|
* Unfortunately can not use normal 64 bit division on 32 bit arch, but
|
* the alternative, do_div, does not work with negative numbers so have
|
* to special case them
|
*/
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if (t < 0) {
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abs_t = -t;
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ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
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ts.tv_nsec = -ts.tv_nsec;
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ts.tv_sec = -abs_t;
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} else {
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abs_t = t;
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ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
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ts.tv_sec = abs_t;
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}
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|
return ts;
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}
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static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr)
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{
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s64 t = xdr_to_u64(xdr);
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|
return yfs_time_to_linux(t);
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}
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static void yfs_check_req(struct afs_call *call, __be32 *bp)
|
{
|
size_t len = (void *)bp - call->request;
|
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if (len > call->request_size)
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pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n",
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call->type->name, len, call->request_size);
|
else if (len < call->request_size)
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pr_warn("kAFS: %s: Request buffer underflow (%zu<%u)\n",
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call->type->name, len, call->request_size);
|
}
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/*
|
* Dump a bad file status record.
|
*/
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static void xdr_dump_bad(const __be32 *bp)
|
{
|
__be32 x[4];
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int i;
|
|
pr_notice("YFS XDR: Bad status record\n");
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for (i = 0; i < 6 * 4 * 4; i += 16) {
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memcpy(x, bp, 16);
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bp += 4;
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pr_notice("%03x: %08x %08x %08x %08x\n",
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i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
|
}
|
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memcpy(x, bp, 8);
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pr_notice("0x60: %08x %08x\n", ntohl(x[0]), ntohl(x[1]));
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}
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/*
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* Decode a YFSFetchStatus block
|
*/
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static void xdr_decode_YFSFetchStatus(const __be32 **_bp,
|
struct afs_call *call,
|
struct afs_status_cb *scb)
|
{
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const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
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struct afs_file_status *status = &scb->status;
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u32 type;
|
|
status->abort_code = ntohl(xdr->abort_code);
|
if (status->abort_code != 0) {
|
if (status->abort_code == VNOVNODE)
|
status->nlink = 0;
|
scb->have_error = true;
|
goto advance;
|
}
|
|
type = ntohl(xdr->type);
|
switch (type) {
|
case AFS_FTYPE_FILE:
|
case AFS_FTYPE_DIR:
|
case AFS_FTYPE_SYMLINK:
|
status->type = type;
|
break;
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default:
|
goto bad;
|
}
|
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status->nlink = ntohl(xdr->nlink);
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status->author = xdr_to_u64(xdr->author);
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status->owner = xdr_to_u64(xdr->owner);
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status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
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status->anon_access = ntohl(xdr->anon_access);
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status->mode = ntohl(xdr->mode) & S_IALLUGO;
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status->group = xdr_to_u64(xdr->group);
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status->lock_count = ntohl(xdr->lock_count);
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status->mtime_client = xdr_to_time(xdr->mtime_client);
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status->mtime_server = xdr_to_time(xdr->mtime_server);
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status->size = xdr_to_u64(xdr->size);
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status->data_version = xdr_to_u64(xdr->data_version);
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scb->have_status = true;
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advance:
|
*_bp += xdr_size(xdr);
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return;
|
|
bad:
|
xdr_dump_bad(*_bp);
|
afs_protocol_error(call, afs_eproto_bad_status);
|
goto advance;
|
}
|
|
/*
|
* Decode a YFSCallBack block
|
*/
|
static void xdr_decode_YFSCallBack(const __be32 **_bp,
|
struct afs_call *call,
|
struct afs_status_cb *scb)
|
{
|
struct yfs_xdr_YFSCallBack *x = (void *)*_bp;
|
struct afs_callback *cb = &scb->callback;
|
ktime_t cb_expiry;
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|
cb_expiry = ktime_add(call->issue_time, xdr_to_u64(x->expiration_time) * 100);
|
cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC);
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scb->have_cb = true;
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*_bp += xdr_size(x);
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}
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/*
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* Decode a YFSVolSync block
|
*/
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static void xdr_decode_YFSVolSync(const __be32 **_bp,
|
struct afs_volsync *volsync)
|
{
|
struct yfs_xdr_YFSVolSync *x = (void *)*_bp;
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u64 creation;
|
|
if (volsync) {
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creation = xdr_to_u64(x->vol_creation_date);
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do_div(creation, 10 * 1000 * 1000);
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volsync->creation = creation;
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}
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*_bp += xdr_size(x);
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}
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/*
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* Encode the requested attributes into a YFSStoreStatus block
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*/
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static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr)
|
{
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struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
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s64 mtime = 0, owner = 0, group = 0;
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u32 mask = 0, mode = 0;
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|
mask = 0;
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if (attr->ia_valid & ATTR_MTIME) {
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mask |= AFS_SET_MTIME;
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mtime = linux_to_yfs_time(&attr->ia_mtime);
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}
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if (attr->ia_valid & ATTR_UID) {
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mask |= AFS_SET_OWNER;
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owner = from_kuid(&init_user_ns, attr->ia_uid);
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}
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if (attr->ia_valid & ATTR_GID) {
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mask |= AFS_SET_GROUP;
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group = from_kgid(&init_user_ns, attr->ia_gid);
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}
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if (attr->ia_valid & ATTR_MODE) {
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mask |= AFS_SET_MODE;
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mode = attr->ia_mode & S_IALLUGO;
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}
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x->mask = htonl(mask);
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x->mode = htonl(mode);
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x->mtime_client = u64_to_xdr(mtime);
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x->owner = u64_to_xdr(owner);
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x->group = u64_to_xdr(group);
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return bp + xdr_size(x);
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}
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/*
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* Decode a YFSFetchVolumeStatus block.
|
*/
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static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp,
|
struct afs_volume_status *vs)
|
{
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const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp;
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u32 flags;
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vs->vid = xdr_to_u64(x->vid);
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vs->parent_id = xdr_to_u64(x->parent_id);
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flags = ntohl(x->flags);
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vs->online = flags & yfs_FVSOnline;
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vs->in_service = flags & yfs_FVSInservice;
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vs->blessed = flags & yfs_FVSBlessed;
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vs->needs_salvage = flags & yfs_FVSNeedsSalvage;
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vs->type = ntohl(x->type);
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vs->min_quota = 0;
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vs->max_quota = xdr_to_u64(x->max_quota);
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vs->blocks_in_use = xdr_to_u64(x->blocks_in_use);
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vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail);
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vs->part_max_blocks = xdr_to_u64(x->part_max_blocks);
|
vs->vol_copy_date = xdr_to_u64(x->vol_copy_date);
|
vs->vol_backup_date = xdr_to_u64(x->vol_backup_date);
|
*_bp += sizeof(*x) / sizeof(__be32);
|
}
|
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/*
|
* Deliver reply data to operations that just return a file status and a volume
|
* sync record.
|
*/
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static int yfs_deliver_status_and_volsync(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
const __be32 *bp;
|
int ret;
|
|
ret = afs_transfer_reply(call);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_YFSFetchStatus(&bp, call, &op->file[0].scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
|
_leave(" = 0 [done]");
|
return 0;
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}
|
|
/*
|
* Deliver reply data to an YFS.FetchData64.
|
*/
|
static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_read *req = op->fetch.req;
|
const __be32 *bp;
|
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);
|
afs_extract_to_tmp64(call);
|
call->unmarshall++;
|
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,
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
fallthrough;
|
|
/* extract the metadata */
|
case 4:
|
ret = afs_extract_data(call, false);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_YFSCallBack(&bp, call, &vp->scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
|
req->data_version = vp->scb.status.data_version;
|
req->file_size = vp->scb.status.size;
|
|
call->unmarshall++;
|
fallthrough;
|
|
case 5:
|
break;
|
}
|
|
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;
|
}
|
|
/*
|
* YFS.FetchData64 operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSFetchData64 = {
|
.name = "YFS.FetchData64",
|
.op = yfs_FS_FetchData64,
|
.deliver = yfs_deliver_fs_fetch_data64,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Fetch data from a file.
|
*/
|
void yfs_fs_fetch_data(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_read *req = op->fetch.req;
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter(",%x,{%llx:%llu},%llx,%llx",
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode,
|
req->pos, req->len);
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchData64,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(struct yfs_xdr_u64) * 2,
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSFETCHDATA64);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
bp = xdr_encode_u64(bp, req->pos);
|
bp = xdr_encode_u64(bp, req->len);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data for YFS.CreateFile or YFS.MakeDir.
|
*/
|
static int yfs_deliver_fs_create_vnode(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_vnode_param *vp = &op->file[1];
|
const __be32 *bp;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
ret = afs_transfer_reply(call);
|
if (ret < 0)
|
return ret;
|
|
/* unmarshall the reply once we've received all of it */
|
bp = call->buffer;
|
xdr_decode_YFSFid(&bp, &op->file[1].fid);
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
|
xdr_decode_YFSCallBack(&bp, call, &vp->scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* FS.CreateFile and FS.MakeDir operation type
|
*/
|
static const struct afs_call_type afs_RXFSCreateFile = {
|
.name = "YFS.CreateFile",
|
.op = yfs_FS_CreateFile,
|
.deliver = yfs_deliver_fs_create_vnode,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Create a file.
|
*/
|
void yfs_fs_create_file(struct afs_operation *op)
|
{
|
const struct qstr *name = &op->dentry->d_name;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_call *call;
|
size_t reqsz, rplsz;
|
__be32 *bp;
|
|
_enter("");
|
|
reqsz = (sizeof(__be32) +
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(name->len) +
|
sizeof(struct yfs_xdr_YFSStoreStatus) +
|
sizeof(__be32));
|
rplsz = (sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile, reqsz, rplsz);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSCREATEFILE);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &dvp->fid);
|
bp = xdr_encode_name(bp, name);
|
bp = xdr_encode_YFSStoreStatus_mode(bp, op->create.mode);
|
bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
static const struct afs_call_type yfs_RXFSMakeDir = {
|
.name = "YFS.MakeDir",
|
.op = yfs_FS_MakeDir,
|
.deliver = yfs_deliver_fs_create_vnode,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Make a directory.
|
*/
|
void yfs_fs_make_dir(struct afs_operation *op)
|
{
|
const struct qstr *name = &op->dentry->d_name;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_call *call;
|
size_t reqsz, rplsz;
|
__be32 *bp;
|
|
_enter("");
|
|
reqsz = (sizeof(__be32) +
|
sizeof(struct yfs_xdr_RPCFlags) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(name->len) +
|
sizeof(struct yfs_xdr_YFSStoreStatus));
|
rplsz = (sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXFSMakeDir, reqsz, rplsz);
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSMAKEDIR);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &dvp->fid);
|
bp = xdr_encode_name(bp, name);
|
bp = xdr_encode_YFSStoreStatus_mode(bp, op->create.mode);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to a YFS.RemoveFile2 operation.
|
*/
|
static int yfs_deliver_fs_remove_file2(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_vnode_param *vp = &op->file[1];
|
struct afs_fid fid;
|
const __be32 *bp;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
ret = afs_transfer_reply(call);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
|
xdr_decode_YFSFid(&bp, &fid);
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
|
/* Was deleted if vnode->status.abort_code == VNOVNODE. */
|
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
return 0;
|
}
|
|
static void yfs_done_fs_remove_file2(struct afs_call *call)
|
{
|
if (call->error == -ECONNABORTED &&
|
call->abort_code == RX_INVALID_OPERATION) {
|
set_bit(AFS_SERVER_FL_NO_RM2, &call->server->flags);
|
call->op->flags |= AFS_OPERATION_DOWNGRADE;
|
}
|
}
|
|
/*
|
* YFS.RemoveFile2 operation type.
|
*/
|
static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
|
.name = "YFS.RemoveFile2",
|
.op = yfs_FS_RemoveFile2,
|
.deliver = yfs_deliver_fs_remove_file2,
|
.done = yfs_done_fs_remove_file2,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Remove a file and retrieve new file status.
|
*/
|
void yfs_fs_remove_file2(struct afs_operation *op)
|
{
|
struct afs_vnode_param *dvp = &op->file[0];
|
const struct qstr *name = &op->dentry->d_name;
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile2,
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_RPCFlags) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(name->len),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &dvp->fid);
|
bp = xdr_encode_name(bp, name);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation.
|
*/
|
static int yfs_deliver_fs_remove(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *dvp = &op->file[0];
|
const __be32 *bp;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
ret = afs_transfer_reply(call);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
return 0;
|
}
|
|
/*
|
* FS.RemoveDir and FS.RemoveFile operation types.
|
*/
|
static const struct afs_call_type yfs_RXYFSRemoveFile = {
|
.name = "YFS.RemoveFile",
|
.op = yfs_FS_RemoveFile,
|
.deliver = yfs_deliver_fs_remove,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Remove a file.
|
*/
|
void yfs_fs_remove_file(struct afs_operation *op)
|
{
|
const struct qstr *name = &op->dentry->d_name;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
if (!test_bit(AFS_SERVER_FL_NO_RM2, &op->server->flags))
|
return yfs_fs_remove_file2(op);
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile,
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_RPCFlags) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(name->len),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSREMOVEFILE);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &dvp->fid);
|
bp = xdr_encode_name(bp, name);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
static const struct afs_call_type yfs_RXYFSRemoveDir = {
|
.name = "YFS.RemoveDir",
|
.op = yfs_FS_RemoveDir,
|
.deliver = yfs_deliver_fs_remove,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Remove a directory.
|
*/
|
void yfs_fs_remove_dir(struct afs_operation *op)
|
{
|
const struct qstr *name = &op->dentry->d_name;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveDir,
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_RPCFlags) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(name->len),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSREMOVEDIR);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &dvp->fid);
|
bp = xdr_encode_name(bp, name);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to a YFS.Link operation.
|
*/
|
static int yfs_deliver_fs_link(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_vnode_param *vp = &op->file[1];
|
const __be32 *bp;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
ret = afs_transfer_reply(call);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* YFS.Link operation type.
|
*/
|
static const struct afs_call_type yfs_RXYFSLink = {
|
.name = "YFS.Link",
|
.op = yfs_FS_Link,
|
.deliver = yfs_deliver_fs_link,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Make a hard link.
|
*/
|
void yfs_fs_link(struct afs_operation *op)
|
{
|
const struct qstr *name = &op->dentry->d_name;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_vnode_param *vp = &op->file[1];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSLink,
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_RPCFlags) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(name->len) +
|
sizeof(struct yfs_xdr_YFSFid),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSLINK);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &dvp->fid);
|
bp = xdr_encode_name(bp, name);
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call1(call, &vp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to a YFS.Symlink operation.
|
*/
|
static int yfs_deliver_fs_symlink(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_vnode_param *vp = &op->file[1];
|
const __be32 *bp;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
ret = afs_transfer_reply(call);
|
if (ret < 0)
|
return ret;
|
|
/* unmarshall the reply once we've received all of it */
|
bp = call->buffer;
|
xdr_decode_YFSFid(&bp, &vp->fid);
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* YFS.Symlink operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSSymlink = {
|
.name = "YFS.Symlink",
|
.op = yfs_FS_Symlink,
|
.deliver = yfs_deliver_fs_symlink,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Create a symbolic link.
|
*/
|
void yfs_fs_symlink(struct afs_operation *op)
|
{
|
const struct qstr *name = &op->dentry->d_name;
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_call *call;
|
size_t contents_sz;
|
__be32 *bp;
|
|
_enter("");
|
|
contents_sz = strlen(op->create.symlink);
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSSymlink,
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_RPCFlags) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(name->len) +
|
xdr_strlen(contents_sz) +
|
sizeof(struct yfs_xdr_YFSStoreStatus),
|
sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSSYMLINK);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &dvp->fid);
|
bp = xdr_encode_name(bp, name);
|
bp = xdr_encode_string(bp, op->create.symlink, contents_sz);
|
bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to a YFS.Rename operation.
|
*/
|
static int yfs_deliver_fs_rename(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *orig_dvp = &op->file[0];
|
struct afs_vnode_param *new_dvp = &op->file[1];
|
const __be32 *bp;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
ret = afs_transfer_reply(call);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
/* If the two dirs are the same, we have two copies of the same status
|
* report, so we just decode it twice.
|
*/
|
xdr_decode_YFSFetchStatus(&bp, call, &orig_dvp->scb);
|
xdr_decode_YFSFetchStatus(&bp, call, &new_dvp->scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* YFS.Rename operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSRename = {
|
.name = "FS.Rename",
|
.op = yfs_FS_Rename,
|
.deliver = yfs_deliver_fs_rename,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Rename a file or directory.
|
*/
|
void yfs_fs_rename(struct afs_operation *op)
|
{
|
struct afs_vnode_param *orig_dvp = &op->file[0];
|
struct afs_vnode_param *new_dvp = &op->file[1];
|
const struct qstr *orig_name = &op->dentry->d_name;
|
const struct qstr *new_name = &op->dentry_2->d_name;
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSRename,
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_RPCFlags) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(orig_name->len) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
xdr_strlen(new_name->len),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSRENAME);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &orig_dvp->fid);
|
bp = xdr_encode_name(bp, orig_name);
|
bp = xdr_encode_YFSFid(bp, &new_dvp->fid);
|
bp = xdr_encode_name(bp, new_name);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* YFS.StoreData64 operation type.
|
*/
|
static const struct afs_call_type yfs_RXYFSStoreData64 = {
|
.name = "YFS.StoreData64",
|
.op = yfs_FS_StoreData64,
|
.deliver = yfs_deliver_status_and_volsync,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Store a set of pages to a large file.
|
*/
|
void yfs_fs_store_data(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
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);
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64,
|
sizeof(__be32) +
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(struct yfs_xdr_YFSStoreStatus) +
|
sizeof(struct yfs_xdr_u64) * 3,
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
call->key = op->key;
|
call->send_pages = true;
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSSTOREDATA64);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
bp = xdr_encode_YFSStoreStatus_mtime(bp, &op->mtime);
|
bp = xdr_encode_u64(bp, pos);
|
bp = xdr_encode_u64(bp, size);
|
bp = xdr_encode_u64(bp, i_size);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* YFS.StoreStatus operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSStoreStatus = {
|
.name = "YFS.StoreStatus",
|
.op = yfs_FS_StoreStatus,
|
.deliver = yfs_deliver_status_and_volsync,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = {
|
.name = "YFS.StoreData64",
|
.op = yfs_FS_StoreData64,
|
.deliver = yfs_deliver_status_and_volsync,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Set the attributes on a file, using YFS.StoreData64 rather than
|
* YFS.StoreStatus so as to alter the file size also.
|
*/
|
static void yfs_fs_setattr_size(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
struct iattr *attr = op->setattr.attr;
|
__be32 *bp;
|
|
_enter(",%x,{%llx:%llu},,",
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode);
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64_as_Status,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(struct yfs_xdr_YFSStoreStatus) +
|
sizeof(struct yfs_xdr_u64) * 3,
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSSTOREDATA64);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
bp = xdr_encode_YFS_StoreStatus(bp, attr);
|
bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */
|
bp = xdr_encode_u64(bp, 0); /* size of write */
|
bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Set the attributes on a file, using YFS.StoreData64 if there's a change in
|
* file size, and YFS.StoreStatus otherwise.
|
*/
|
void yfs_fs_setattr(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
struct iattr *attr = op->setattr.attr;
|
__be32 *bp;
|
|
if (attr->ia_valid & ATTR_SIZE)
|
return yfs_fs_setattr_size(op);
|
|
_enter(",%x,{%llx:%llu},,",
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode);
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreStatus,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(struct yfs_xdr_YFSStoreStatus),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSSTORESTATUS);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
bp = xdr_encode_YFS_StoreStatus(bp, attr);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to a YFS.GetVolumeStatus operation.
|
*/
|
static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
const __be32 *bp;
|
char *p;
|
u32 size;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
switch (call->unmarshall) {
|
case 0:
|
call->unmarshall++;
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus));
|
fallthrough;
|
|
/* extract the returned status record */
|
case 1:
|
_debug("extract status");
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_YFSFetchVolumeStatus(&bp, &op->volstatus.vs);
|
call->unmarshall++;
|
afs_extract_to_tmp(call);
|
fallthrough;
|
|
/* extract the volume name length */
|
case 2:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
call->count = ntohl(call->tmp);
|
_debug("volname length: %u", call->count);
|
if (call->count >= AFSNAMEMAX)
|
return afs_protocol_error(call, afs_eproto_volname_len);
|
size = (call->count + 3) & ~3; /* It's padded */
|
afs_extract_to_buf(call, size);
|
call->unmarshall++;
|
fallthrough;
|
|
/* extract the volume name */
|
case 3:
|
_debug("extract volname");
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
p = call->buffer;
|
p[call->count] = 0;
|
_debug("volname '%s'", p);
|
afs_extract_to_tmp(call);
|
call->unmarshall++;
|
fallthrough;
|
|
/* extract the offline message length */
|
case 4:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
call->count = ntohl(call->tmp);
|
_debug("offline msg length: %u", call->count);
|
if (call->count >= AFSNAMEMAX)
|
return afs_protocol_error(call, afs_eproto_offline_msg_len);
|
size = (call->count + 3) & ~3; /* It's padded */
|
afs_extract_to_buf(call, size);
|
call->unmarshall++;
|
fallthrough;
|
|
/* extract the offline message */
|
case 5:
|
_debug("extract offline");
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
p = call->buffer;
|
p[call->count] = 0;
|
_debug("offline '%s'", p);
|
|
afs_extract_to_tmp(call);
|
call->unmarshall++;
|
fallthrough;
|
|
/* extract the message of the day length */
|
case 6:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
call->count = ntohl(call->tmp);
|
_debug("motd length: %u", call->count);
|
if (call->count >= AFSNAMEMAX)
|
return afs_protocol_error(call, afs_eproto_motd_len);
|
size = (call->count + 3) & ~3; /* It's padded */
|
afs_extract_to_buf(call, size);
|
call->unmarshall++;
|
fallthrough;
|
|
/* extract the message of the day */
|
case 7:
|
_debug("extract motd");
|
ret = afs_extract_data(call, false);
|
if (ret < 0)
|
return ret;
|
|
p = call->buffer;
|
p[call->count] = 0;
|
_debug("motd '%s'", p);
|
|
call->unmarshall++;
|
fallthrough;
|
|
case 8:
|
break;
|
}
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* YFS.GetVolumeStatus operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
|
.name = "YFS.GetVolumeStatus",
|
.op = yfs_FS_GetVolumeStatus,
|
.deliver = yfs_deliver_fs_get_volume_status,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* fetch the status of a volume
|
*/
|
void yfs_fs_get_volume_status(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSGetVolumeStatus,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_u64),
|
max_t(size_t,
|
sizeof(struct yfs_xdr_YFSFetchVolumeStatus) +
|
sizeof(__be32),
|
AFSOPAQUEMAX + 1));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_u64(bp, vp->fid.vid);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* YFS.SetLock operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSSetLock = {
|
.name = "YFS.SetLock",
|
.op = yfs_FS_SetLock,
|
.deliver = yfs_deliver_status_and_volsync,
|
.done = afs_lock_op_done,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* YFS.ExtendLock operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSExtendLock = {
|
.name = "YFS.ExtendLock",
|
.op = yfs_FS_ExtendLock,
|
.deliver = yfs_deliver_status_and_volsync,
|
.done = afs_lock_op_done,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* YFS.ReleaseLock operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSReleaseLock = {
|
.name = "YFS.ReleaseLock",
|
.op = yfs_FS_ReleaseLock,
|
.deliver = yfs_deliver_status_and_volsync,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Set a lock on a file
|
*/
|
void yfs_fs_set_lock(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSSetLock,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(__be32),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSSETLOCK);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
bp = xdr_encode_u32(bp, op->lock.type);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_calli(call, &vp->fid, op->lock.type);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* extend a lock on a file
|
*/
|
void yfs_fs_extend_lock(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSExtendLock,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* release a lock on a file
|
*/
|
void yfs_fs_release_lock(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter("");
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSReleaseLock,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSRELEASELOCK);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver a reply to YFS.FetchStatus
|
*/
|
static int yfs_deliver_fs_fetch_status(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
|
const __be32 *bp;
|
int ret;
|
|
ret = afs_transfer_reply(call);
|
if (ret < 0)
|
return ret;
|
|
/* unmarshall the reply once we've received all of it */
|
bp = call->buffer;
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_YFSCallBack(&bp, call, &vp->scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* YFS.FetchStatus operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSFetchStatus = {
|
.name = "YFS.FetchStatus",
|
.op = yfs_FS_FetchStatus,
|
.deliver = yfs_deliver_fs_fetch_status,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Fetch the status information for a fid without needing a vnode handle.
|
*/
|
void yfs_fs_fetch_status(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter(",%x,{%llx:%llu},,",
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode);
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchStatus,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid),
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to an YFS.InlineBulkStatus call
|
*/
|
static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_status_cb *scb;
|
const __be32 *bp;
|
u32 tmp;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
switch (call->unmarshall) {
|
case 0:
|
afs_extract_to_tmp(call);
|
call->unmarshall++;
|
fallthrough;
|
|
/* Extract the file status count and array in two steps */
|
case 1:
|
_debug("extract status count");
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
tmp = ntohl(call->tmp);
|
_debug("status count: %u/%u", tmp, op->nr_files);
|
if (tmp != op->nr_files)
|
return afs_protocol_error(call, afs_eproto_ibulkst_count);
|
|
call->count = 0;
|
call->unmarshall++;
|
more_counts:
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus));
|
fallthrough;
|
|
case 2:
|
_debug("extract status array %u", call->count);
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
switch (call->count) {
|
case 0:
|
scb = &op->file[0].scb;
|
break;
|
case 1:
|
scb = &op->file[1].scb;
|
break;
|
default:
|
scb = &op->more_files[call->count - 2].scb;
|
break;
|
}
|
|
bp = call->buffer;
|
xdr_decode_YFSFetchStatus(&bp, call, scb);
|
|
call->count++;
|
if (call->count < op->nr_files)
|
goto more_counts;
|
|
call->count = 0;
|
call->unmarshall++;
|
afs_extract_to_tmp(call);
|
fallthrough;
|
|
/* Extract the callback count and array in two steps */
|
case 3:
|
_debug("extract CB count");
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
tmp = ntohl(call->tmp);
|
_debug("CB count: %u", tmp);
|
if (tmp != op->nr_files)
|
return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
|
call->count = 0;
|
call->unmarshall++;
|
more_cbs:
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack));
|
fallthrough;
|
|
case 4:
|
_debug("extract CB array");
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
_debug("unmarshall CB array");
|
switch (call->count) {
|
case 0:
|
scb = &op->file[0].scb;
|
break;
|
case 1:
|
scb = &op->file[1].scb;
|
break;
|
default:
|
scb = &op->more_files[call->count - 2].scb;
|
break;
|
}
|
|
bp = call->buffer;
|
xdr_decode_YFSCallBack(&bp, call, scb);
|
call->count++;
|
if (call->count < op->nr_files)
|
goto more_cbs;
|
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
|
call->unmarshall++;
|
fallthrough;
|
|
case 5:
|
ret = afs_extract_data(call, false);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
|
call->unmarshall++;
|
fallthrough;
|
|
case 6:
|
break;
|
}
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
/*
|
* FS.InlineBulkStatus operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
|
.name = "YFS.InlineBulkStatus",
|
.op = yfs_FS_InlineBulkStatus,
|
.deliver = yfs_deliver_fs_inline_bulk_status,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Fetch the status information for up to 1024 files
|
*/
|
void yfs_fs_inline_bulk_status(struct afs_operation *op)
|
{
|
struct afs_vnode_param *dvp = &op->file[0];
|
struct afs_vnode_param *vp = &op->file[1];
|
struct afs_call *call;
|
__be32 *bp;
|
int i;
|
|
_enter(",%x,{%llx:%llu},%u",
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files);
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSInlineBulkStatus,
|
sizeof(__be32) +
|
sizeof(__be32) +
|
sizeof(__be32) +
|
sizeof(struct yfs_xdr_YFSFid) * op->nr_files,
|
sizeof(struct yfs_xdr_YFSFetchStatus));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
|
bp = xdr_encode_u32(bp, 0); /* RPCFlags */
|
bp = xdr_encode_u32(bp, op->nr_files);
|
bp = xdr_encode_YFSFid(bp, &dvp->fid);
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
for (i = 0; i < op->nr_files - 2; i++)
|
bp = xdr_encode_YFSFid(bp, &op->more_files[i].fid);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_NOFS);
|
}
|
|
/*
|
* Deliver reply data to an YFS.FetchOpaqueACL.
|
*/
|
static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
|
{
|
struct afs_operation *op = call->op;
|
struct afs_vnode_param *vp = &op->file[0];
|
struct yfs_acl *yacl = op->yacl;
|
struct afs_acl *acl;
|
const __be32 *bp;
|
unsigned int size;
|
int ret;
|
|
_enter("{%u}", call->unmarshall);
|
|
switch (call->unmarshall) {
|
case 0:
|
afs_extract_to_tmp(call);
|
call->unmarshall++;
|
fallthrough;
|
|
/* Extract the file ACL length */
|
case 1:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
size = call->count2 = ntohl(call->tmp);
|
size = round_up(size, 4);
|
|
if (yacl->flags & YFS_ACL_WANT_ACL) {
|
acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
|
if (!acl)
|
return -ENOMEM;
|
yacl->acl = acl;
|
acl->size = call->count2;
|
afs_extract_begin(call, acl->data, size);
|
} else {
|
afs_extract_discard(call, size);
|
}
|
call->unmarshall++;
|
fallthrough;
|
|
/* Extract the file ACL */
|
case 2:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
afs_extract_to_tmp(call);
|
call->unmarshall++;
|
fallthrough;
|
|
/* Extract the volume ACL length */
|
case 3:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
size = call->count2 = ntohl(call->tmp);
|
size = round_up(size, 4);
|
|
if (yacl->flags & YFS_ACL_WANT_VOL_ACL) {
|
acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
|
if (!acl)
|
return -ENOMEM;
|
yacl->vol_acl = acl;
|
acl->size = call->count2;
|
afs_extract_begin(call, acl->data, size);
|
} else {
|
afs_extract_discard(call, size);
|
}
|
call->unmarshall++;
|
fallthrough;
|
|
/* Extract the volume ACL */
|
case 4:
|
ret = afs_extract_data(call, true);
|
if (ret < 0)
|
return ret;
|
|
afs_extract_to_buf(call,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
call->unmarshall++;
|
fallthrough;
|
|
/* extract the metadata */
|
case 5:
|
ret = afs_extract_data(call, false);
|
if (ret < 0)
|
return ret;
|
|
bp = call->buffer;
|
yacl->inherit_flag = ntohl(*bp++);
|
yacl->num_cleaned = ntohl(*bp++);
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
|
xdr_decode_YFSVolSync(&bp, &op->volsync);
|
|
call->unmarshall++;
|
fallthrough;
|
|
case 6:
|
break;
|
}
|
|
_leave(" = 0 [done]");
|
return 0;
|
}
|
|
void yfs_free_opaque_acl(struct yfs_acl *yacl)
|
{
|
if (yacl) {
|
kfree(yacl->acl);
|
kfree(yacl->vol_acl);
|
kfree(yacl);
|
}
|
}
|
|
/*
|
* YFS.FetchOpaqueACL operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = {
|
.name = "YFS.FetchOpaqueACL",
|
.op = yfs_FS_FetchOpaqueACL,
|
.deliver = yfs_deliver_fs_fetch_opaque_acl,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Fetch the YFS advanced ACLs for a file.
|
*/
|
void yfs_fs_fetch_opaque_acl(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
__be32 *bp;
|
|
_enter(",%x,{%llx:%llu},,",
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode);
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchOpaqueACL,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid),
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_KERNEL);
|
}
|
|
/*
|
* YFS.StoreOpaqueACL2 operation type
|
*/
|
static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = {
|
.name = "YFS.StoreOpaqueACL2",
|
.op = yfs_FS_StoreOpaqueACL2,
|
.deliver = yfs_deliver_status_and_volsync,
|
.destructor = afs_flat_call_destructor,
|
};
|
|
/*
|
* Fetch the YFS ACL for a file.
|
*/
|
void yfs_fs_store_opaque_acl2(struct afs_operation *op)
|
{
|
struct afs_vnode_param *vp = &op->file[0];
|
struct afs_call *call;
|
struct afs_acl *acl = op->acl;
|
size_t size;
|
__be32 *bp;
|
|
_enter(",%x,{%llx:%llu},,",
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode);
|
|
size = round_up(acl->size, 4);
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreOpaqueACL2,
|
sizeof(__be32) * 2 +
|
sizeof(struct yfs_xdr_YFSFid) +
|
sizeof(__be32) + size,
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
sizeof(struct yfs_xdr_YFSVolSync));
|
if (!call)
|
return afs_op_nomem(op);
|
|
/* marshall the parameters */
|
bp = call->request;
|
bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2);
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
bp = xdr_encode_YFSFid(bp, &vp->fid);
|
bp = xdr_encode_u32(bp, acl->size);
|
memcpy(bp, acl->data, acl->size);
|
if (acl->size != size)
|
memset((void *)bp + acl->size, 0, size - acl->size);
|
bp += size / sizeof(__be32);
|
yfs_check_req(call, bp);
|
|
trace_afs_make_fs_call(call, &vp->fid);
|
afs_make_op_call(op, call, GFP_KERNEL);
|
}
|
