1906 lines
44 KiB
C
1906 lines
44 KiB
C
/* AFS File Server client stubs
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*
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* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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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 "internal.h"
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#include "afs_fs.h"
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/*
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* decode an AFSFid block
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*/
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static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
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{
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const __be32 *bp = *_bp;
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fid->vid = ntohl(*bp++);
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fid->vnode = ntohl(*bp++);
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fid->unique = ntohl(*bp++);
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*_bp = bp;
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}
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/*
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* decode an AFSFetchStatus block
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*/
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static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
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struct afs_file_status *status,
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struct afs_vnode *vnode,
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afs_dataversion_t *store_version)
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{
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afs_dataversion_t expected_version;
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const __be32 *bp = *_bp;
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umode_t mode;
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u64 data_version, size;
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u32 changed = 0; /* becomes non-zero if ctime-type changes seen */
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#define EXTRACT(DST) \
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do { \
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u32 x = ntohl(*bp++); \
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changed |= DST - x; \
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DST = x; \
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} while (0)
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status->if_version = ntohl(*bp++);
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EXTRACT(status->type);
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EXTRACT(status->nlink);
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size = ntohl(*bp++);
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data_version = ntohl(*bp++);
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EXTRACT(status->author);
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EXTRACT(status->owner);
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EXTRACT(status->caller_access); /* call ticket dependent */
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EXTRACT(status->anon_access);
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EXTRACT(status->mode);
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EXTRACT(status->parent.vnode);
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EXTRACT(status->parent.unique);
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bp++; /* seg size */
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status->mtime_client = ntohl(*bp++);
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status->mtime_server = ntohl(*bp++);
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EXTRACT(status->group);
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bp++; /* sync counter */
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data_version |= (u64) ntohl(*bp++) << 32;
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EXTRACT(status->lock_count);
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size |= (u64) ntohl(*bp++) << 32;
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bp++; /* spare 4 */
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*_bp = bp;
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if (size != status->size) {
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status->size = size;
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changed |= true;
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}
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status->mode &= S_IALLUGO;
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_debug("vnode time %lx, %lx",
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status->mtime_client, status->mtime_server);
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if (vnode) {
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status->parent.vid = vnode->fid.vid;
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if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
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_debug("vnode changed");
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i_size_write(&vnode->vfs_inode, size);
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vnode->vfs_inode.i_uid = status->owner;
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vnode->vfs_inode.i_gid = status->group;
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vnode->vfs_inode.i_generation = vnode->fid.unique;
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set_nlink(&vnode->vfs_inode, status->nlink);
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mode = vnode->vfs_inode.i_mode;
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mode &= ~S_IALLUGO;
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mode |= status->mode;
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barrier();
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vnode->vfs_inode.i_mode = mode;
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}
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vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server;
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vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime;
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vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime;
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vnode->vfs_inode.i_version = data_version;
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}
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expected_version = status->data_version;
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if (store_version)
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expected_version = *store_version;
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if (expected_version != data_version) {
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status->data_version = data_version;
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if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
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_debug("vnode modified %llx on {%x:%u}",
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(unsigned long long) data_version,
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vnode->fid.vid, vnode->fid.vnode);
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set_bit(AFS_VNODE_MODIFIED, &vnode->flags);
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set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
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}
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} else if (store_version) {
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status->data_version = data_version;
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}
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}
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/*
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* decode an AFSCallBack block
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*/
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static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode)
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{
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const __be32 *bp = *_bp;
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vnode->cb_version = ntohl(*bp++);
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vnode->cb_expiry = ntohl(*bp++);
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vnode->cb_type = ntohl(*bp++);
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vnode->cb_expires = vnode->cb_expiry + get_seconds();
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*_bp = bp;
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}
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static void xdr_decode_AFSCallBack_raw(const __be32 **_bp,
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struct afs_callback *cb)
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{
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const __be32 *bp = *_bp;
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cb->version = ntohl(*bp++);
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cb->expiry = ntohl(*bp++);
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cb->type = ntohl(*bp++);
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*_bp = bp;
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}
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/*
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* decode an AFSVolSync block
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*/
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static void xdr_decode_AFSVolSync(const __be32 **_bp,
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struct afs_volsync *volsync)
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{
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const __be32 *bp = *_bp;
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volsync->creation = ntohl(*bp++);
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bp++; /* spare2 */
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bp++; /* spare3 */
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bp++; /* spare4 */
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bp++; /* spare5 */
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bp++; /* spare6 */
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*_bp = bp;
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}
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/*
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* encode the requested attributes into an AFSStoreStatus block
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*/
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static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
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{
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__be32 *bp = *_bp;
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u32 mask = 0, mtime = 0, owner = 0, group = 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 = attr->ia_mtime.tv_sec;
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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 = 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 = 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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*bp++ = htonl(mask);
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*bp++ = htonl(mtime);
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*bp++ = htonl(owner);
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*bp++ = htonl(group);
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*bp++ = htonl(mode);
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*bp++ = 0; /* segment size */
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*_bp = bp;
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}
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/*
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* decode an AFSFetchVolumeStatus block
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*/
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static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
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struct afs_volume_status *vs)
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{
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const __be32 *bp = *_bp;
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vs->vid = ntohl(*bp++);
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vs->parent_id = ntohl(*bp++);
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vs->online = ntohl(*bp++);
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vs->in_service = ntohl(*bp++);
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vs->blessed = ntohl(*bp++);
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vs->needs_salvage = ntohl(*bp++);
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vs->type = ntohl(*bp++);
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vs->min_quota = ntohl(*bp++);
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vs->max_quota = ntohl(*bp++);
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vs->blocks_in_use = ntohl(*bp++);
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vs->part_blocks_avail = ntohl(*bp++);
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vs->part_max_blocks = ntohl(*bp++);
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*_bp = bp;
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}
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/*
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* deliver reply data to an FS.FetchStatus
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*/
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static int afs_deliver_fs_fetch_status(struct afs_call *call,
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struct sk_buff *skb, bool last)
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{
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struct afs_vnode *vnode = call->reply;
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const __be32 *bp;
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_enter(",,%u", last);
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afs_transfer_reply(call, skb);
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if (!last)
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return 0;
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if (call->reply_size != call->reply_max)
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return -EBADMSG;
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/* unmarshall the reply once we've received all of it */
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bp = call->buffer;
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xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
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xdr_decode_AFSCallBack(&bp, vnode);
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if (call->reply2)
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xdr_decode_AFSVolSync(&bp, call->reply2);
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_leave(" = 0 [done]");
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return 0;
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}
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/*
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* FS.FetchStatus operation type
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*/
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static const struct afs_call_type afs_RXFSFetchStatus = {
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.name = "FS.FetchStatus",
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.deliver = afs_deliver_fs_fetch_status,
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.abort_to_error = afs_abort_to_error,
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.destructor = afs_flat_call_destructor,
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};
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/*
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* fetch the status information for a file
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*/
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int afs_fs_fetch_file_status(struct afs_server *server,
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struct key *key,
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struct afs_vnode *vnode,
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struct afs_volsync *volsync,
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const struct afs_wait_mode *wait_mode)
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{
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struct afs_call *call;
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__be32 *bp;
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_enter(",%x,{%x:%u},,",
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key_serial(key), vnode->fid.vid, vnode->fid.vnode);
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call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4);
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if (!call)
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return -ENOMEM;
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call->key = key;
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call->reply = vnode;
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call->reply2 = volsync;
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call->service_id = FS_SERVICE;
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call->port = htons(AFS_FS_PORT);
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/* marshall the parameters */
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bp = call->request;
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bp[0] = htonl(FSFETCHSTATUS);
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bp[1] = htonl(vnode->fid.vid);
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bp[2] = htonl(vnode->fid.vnode);
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bp[3] = htonl(vnode->fid.unique);
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return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
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}
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/*
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* deliver reply data to an FS.FetchData
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*/
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static int afs_deliver_fs_fetch_data(struct afs_call *call,
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struct sk_buff *skb, bool last)
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{
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struct afs_vnode *vnode = call->reply;
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const __be32 *bp;
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struct page *page;
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void *buffer;
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int ret;
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_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
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switch (call->unmarshall) {
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case 0:
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call->offset = 0;
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call->unmarshall++;
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if (call->operation_ID != FSFETCHDATA64) {
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call->unmarshall++;
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goto no_msw;
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}
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/* extract the upper part of the returned data length of an
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* FSFETCHDATA64 op (which should always be 0 using this
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* client) */
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case 1:
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_debug("extract data length (MSW)");
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ret = afs_extract_data(call, skb, last, &call->tmp, 4);
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switch (ret) {
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case 0: break;
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case -EAGAIN: return 0;
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default: return ret;
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}
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call->count = ntohl(call->tmp);
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_debug("DATA length MSW: %u", call->count);
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if (call->count > 0)
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return -EBADMSG;
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call->offset = 0;
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call->unmarshall++;
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no_msw:
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/* extract the returned data length */
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case 2:
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_debug("extract data length");
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ret = afs_extract_data(call, skb, last, &call->tmp, 4);
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switch (ret) {
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case 0: break;
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case -EAGAIN: return 0;
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default: return ret;
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}
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call->count = ntohl(call->tmp);
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_debug("DATA length: %u", call->count);
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if (call->count > PAGE_SIZE)
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return -EBADMSG;
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call->offset = 0;
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call->unmarshall++;
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/* extract the returned data */
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case 3:
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_debug("extract data");
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if (call->count > 0) {
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page = call->reply3;
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buffer = kmap_atomic(page, KM_USER0);
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ret = afs_extract_data(call, skb, last, buffer,
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call->count);
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kunmap_atomic(buffer, KM_USER0);
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switch (ret) {
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case 0: break;
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case -EAGAIN: return 0;
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default: return ret;
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}
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}
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call->offset = 0;
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call->unmarshall++;
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/* extract the metadata */
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case 4:
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ret = afs_extract_data(call, skb, last, call->buffer,
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(21 + 3 + 6) * 4);
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switch (ret) {
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case 0: break;
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case -EAGAIN: return 0;
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default: return ret;
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}
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bp = call->buffer;
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xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
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xdr_decode_AFSCallBack(&bp, vnode);
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if (call->reply2)
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xdr_decode_AFSVolSync(&bp, call->reply2);
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call->offset = 0;
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call->unmarshall++;
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case 5:
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_debug("trailer");
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if (skb->len != 0)
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return -EBADMSG;
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break;
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}
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if (!last)
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return 0;
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if (call->count < PAGE_SIZE) {
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_debug("clear");
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page = call->reply3;
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buffer = kmap_atomic(page, KM_USER0);
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memset(buffer + call->count, 0, PAGE_SIZE - call->count);
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kunmap_atomic(buffer, KM_USER0);
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}
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_leave(" = 0 [done]");
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return 0;
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}
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/*
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* FS.FetchData operation type
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*/
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static const struct afs_call_type afs_RXFSFetchData = {
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.name = "FS.FetchData",
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.deliver = afs_deliver_fs_fetch_data,
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.abort_to_error = afs_abort_to_error,
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.destructor = afs_flat_call_destructor,
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};
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static const struct afs_call_type afs_RXFSFetchData64 = {
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.name = "FS.FetchData64",
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.deliver = afs_deliver_fs_fetch_data,
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.abort_to_error = afs_abort_to_error,
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.destructor = afs_flat_call_destructor,
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};
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/*
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* fetch data from a very large file
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*/
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static int afs_fs_fetch_data64(struct afs_server *server,
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struct key *key,
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struct afs_vnode *vnode,
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off_t offset, size_t length,
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struct page *buffer,
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const struct afs_wait_mode *wait_mode)
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{
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struct afs_call *call;
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__be32 *bp;
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_enter("");
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ASSERTCMP(length, <, ULONG_MAX);
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call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
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if (!call)
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return -ENOMEM;
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call->key = key;
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call->reply = vnode;
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call->reply2 = NULL; /* volsync */
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call->reply3 = buffer;
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call->service_id = FS_SERVICE;
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call->port = htons(AFS_FS_PORT);
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call->operation_ID = FSFETCHDATA64;
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/* marshall the parameters */
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bp = call->request;
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bp[0] = htonl(FSFETCHDATA64);
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bp[1] = htonl(vnode->fid.vid);
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bp[2] = htonl(vnode->fid.vnode);
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bp[3] = htonl(vnode->fid.unique);
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bp[4] = htonl(upper_32_bits(offset));
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bp[5] = htonl((u32) offset);
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bp[6] = 0;
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bp[7] = htonl((u32) length);
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return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
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}
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|
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/*
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* fetch data from a file
|
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*/
|
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int afs_fs_fetch_data(struct afs_server *server,
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struct key *key,
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struct afs_vnode *vnode,
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off_t offset, size_t length,
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struct page *buffer,
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const struct afs_wait_mode *wait_mode)
|
|
{
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struct afs_call *call;
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__be32 *bp;
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|
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if (upper_32_bits(offset) || upper_32_bits(offset + length))
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return afs_fs_fetch_data64(server, key, vnode, offset, length,
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buffer, wait_mode);
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_enter("");
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|
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call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
|
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if (!call)
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return -ENOMEM;
|
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|
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call->key = key;
|
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call->reply = vnode;
|
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call->reply2 = NULL; /* volsync */
|
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call->reply3 = buffer;
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call->service_id = FS_SERVICE;
|
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call->port = htons(AFS_FS_PORT);
|
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call->operation_ID = FSFETCHDATA;
|
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|
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/* 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(offset);
|
|
bp[5] = htonl(length);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.GiveUpCallBacks
|
|
*/
|
|
static int afs_deliver_fs_give_up_callbacks(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
_enter(",{%u},%d", skb->len, last);
|
|
|
|
if (skb->len > 0)
|
|
return -EBADMSG; /* shouldn't be any reply data */
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.GiveUpCallBacks operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSGiveUpCallBacks = {
|
|
.name = "FS.GiveUpCallBacks",
|
|
.deliver = afs_deliver_fs_give_up_callbacks,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* give up a set of callbacks
|
|
* - the callbacks are held in the server->cb_break ring
|
|
*/
|
|
int afs_fs_give_up_callbacks(struct afs_server *server,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
size_t ncallbacks;
|
|
__be32 *bp, *tp;
|
|
int loop;
|
|
|
|
ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail,
|
|
ARRAY_SIZE(server->cb_break));
|
|
|
|
_enter("{%zu},", ncallbacks);
|
|
|
|
if (ncallbacks == 0)
|
|
return 0;
|
|
if (ncallbacks > AFSCBMAX)
|
|
ncallbacks = AFSCBMAX;
|
|
|
|
_debug("break %zu callbacks", ncallbacks);
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks,
|
|
12 + ncallbacks * 6 * 4, 0);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
tp = bp + 2 + ncallbacks * 3;
|
|
*bp++ = htonl(FSGIVEUPCALLBACKS);
|
|
*bp++ = htonl(ncallbacks);
|
|
*tp++ = htonl(ncallbacks);
|
|
|
|
atomic_sub(ncallbacks, &server->cb_break_n);
|
|
for (loop = ncallbacks; loop > 0; loop--) {
|
|
struct afs_callback *cb =
|
|
&server->cb_break[server->cb_break_tail];
|
|
|
|
*bp++ = htonl(cb->fid.vid);
|
|
*bp++ = htonl(cb->fid.vnode);
|
|
*bp++ = htonl(cb->fid.unique);
|
|
*tp++ = htonl(cb->version);
|
|
*tp++ = htonl(cb->expiry);
|
|
*tp++ = htonl(cb->type);
|
|
smp_mb();
|
|
server->cb_break_tail =
|
|
(server->cb_break_tail + 1) &
|
|
(ARRAY_SIZE(server->cb_break) - 1);
|
|
}
|
|
|
|
ASSERT(ncallbacks > 0);
|
|
wake_up_nr(&server->cb_break_waitq, ncallbacks);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.CreateFile or an FS.MakeDir
|
|
*/
|
|
static int afs_deliver_fs_create_vnode(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
struct afs_vnode *vnode = call->reply;
|
|
const __be32 *bp;
|
|
|
|
_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
|
|
|
|
afs_transfer_reply(call, skb);
|
|
if (!last)
|
|
return 0;
|
|
|
|
if (call->reply_size != call->reply_max)
|
|
return -EBADMSG;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFid(&bp, call->reply2);
|
|
xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL);
|
|
xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
|
|
xdr_decode_AFSCallBack_raw(&bp, call->reply4);
|
|
/* xdr_decode_AFSVolSync(&bp, call->replyX); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.CreateFile and FS.MakeDir operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSCreateXXXX = {
|
|
.name = "FS.CreateXXXX",
|
|
.deliver = afs_deliver_fs_create_vnode,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* create a file or make a directory
|
|
*/
|
|
int afs_fs_create(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *vnode,
|
|
const char *name,
|
|
umode_t mode,
|
|
struct afs_fid *newfid,
|
|
struct afs_file_status *newstatus,
|
|
struct afs_callback *newcb,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
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(&afs_RXFSCreateXXXX, reqsz,
|
|
(3 + 21 + 21 + 3 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->reply2 = newfid;
|
|
call->reply3 = newstatus;
|
|
call->reply4 = newcb;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* 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);
|
|
*bp++ = 0; /* mtime */
|
|
*bp++ = 0; /* owner */
|
|
*bp++ = 0; /* group */
|
|
*bp++ = htonl(mode & S_IALLUGO); /* unix mode */
|
|
*bp++ = 0; /* segment size */
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.RemoveFile or FS.RemoveDir
|
|
*/
|
|
static int afs_deliver_fs_remove(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
struct afs_vnode *vnode = call->reply;
|
|
const __be32 *bp;
|
|
|
|
_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
|
|
|
|
afs_transfer_reply(call, skb);
|
|
if (!last)
|
|
return 0;
|
|
|
|
if (call->reply_size != call->reply_max)
|
|
return -EBADMSG;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
|
|
/* xdr_decode_AFSVolSync(&bp, call->replyX); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.RemoveDir/FS.RemoveFile operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSRemoveXXXX = {
|
|
.name = "FS.RemoveXXXX",
|
|
.deliver = afs_deliver_fs_remove,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* remove a file or directory
|
|
*/
|
|
int afs_fs_remove(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *vnode,
|
|
const char *name,
|
|
bool isdir,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
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(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.Link
|
|
*/
|
|
static int afs_deliver_fs_link(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
struct afs_vnode *dvnode = call->reply, *vnode = call->reply2;
|
|
const __be32 *bp;
|
|
|
|
_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
|
|
|
|
afs_transfer_reply(call, skb);
|
|
if (!last)
|
|
return 0;
|
|
|
|
if (call->reply_size != call->reply_max)
|
|
return -EBADMSG;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
|
|
xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL);
|
|
/* xdr_decode_AFSVolSync(&bp, call->replyX); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.Link operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSLink = {
|
|
.name = "FS.Link",
|
|
.deliver = afs_deliver_fs_link,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* make a hard link
|
|
*/
|
|
int afs_fs_link(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *dvnode,
|
|
struct afs_vnode *vnode,
|
|
const char *name,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
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(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = dvnode;
|
|
call->reply2 = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* 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);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.Symlink
|
|
*/
|
|
static int afs_deliver_fs_symlink(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
struct afs_vnode *vnode = call->reply;
|
|
const __be32 *bp;
|
|
|
|
_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
|
|
|
|
afs_transfer_reply(call, skb);
|
|
if (!last)
|
|
return 0;
|
|
|
|
if (call->reply_size != call->reply_max)
|
|
return -EBADMSG;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFid(&bp, call->reply2);
|
|
xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL);
|
|
xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL);
|
|
/* xdr_decode_AFSVolSync(&bp, call->replyX); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.Symlink operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSSymlink = {
|
|
.name = "FS.Symlink",
|
|
.deliver = afs_deliver_fs_symlink,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* create a symbolic link
|
|
*/
|
|
int afs_fs_symlink(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *vnode,
|
|
const char *name,
|
|
const char *contents,
|
|
struct afs_fid *newfid,
|
|
struct afs_file_status *newstatus,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
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(&afs_RXFSSymlink, reqsz,
|
|
(3 + 21 + 21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->reply2 = newfid;
|
|
call->reply3 = newstatus;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* 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);
|
|
*bp++ = 0; /* mtime */
|
|
*bp++ = 0; /* owner */
|
|
*bp++ = 0; /* group */
|
|
*bp++ = htonl(S_IRWXUGO); /* unix mode */
|
|
*bp++ = 0; /* segment size */
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.Rename
|
|
*/
|
|
static int afs_deliver_fs_rename(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2;
|
|
const __be32 *bp;
|
|
|
|
_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
|
|
|
|
afs_transfer_reply(call, skb);
|
|
if (!last)
|
|
return 0;
|
|
|
|
if (call->reply_size != call->reply_max)
|
|
return -EBADMSG;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL);
|
|
if (new_dvnode != orig_dvnode)
|
|
xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode,
|
|
NULL);
|
|
/* xdr_decode_AFSVolSync(&bp, call->replyX); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.Rename operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSRename = {
|
|
.name = "FS.Rename",
|
|
.deliver = afs_deliver_fs_rename,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* create a symbolic link
|
|
*/
|
|
int afs_fs_rename(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *orig_dvnode,
|
|
const char *orig_name,
|
|
struct afs_vnode *new_dvnode,
|
|
const char *new_name,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
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(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = orig_dvnode;
|
|
call->reply2 = new_dvnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.StoreData
|
|
*/
|
|
static int afs_deliver_fs_store_data(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
struct afs_vnode *vnode = call->reply;
|
|
const __be32 *bp;
|
|
|
|
_enter(",,%u", last);
|
|
|
|
afs_transfer_reply(call, skb);
|
|
if (!last) {
|
|
_leave(" = 0 [more]");
|
|
return 0;
|
|
}
|
|
|
|
if (call->reply_size != call->reply_max) {
|
|
_leave(" = -EBADMSG [%u != %u]",
|
|
call->reply_size, call->reply_max);
|
|
return -EBADMSG;
|
|
}
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode,
|
|
&call->store_version);
|
|
/* xdr_decode_AFSVolSync(&bp, call->replyX); */
|
|
|
|
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",
|
|
.deliver = afs_deliver_fs_store_data,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSStoreData64 = {
|
|
.name = "FS.StoreData64",
|
|
.deliver = afs_deliver_fs_store_data,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* store a set of pages to a very large file
|
|
*/
|
|
static int afs_fs_store_data64(struct afs_server *server,
|
|
struct afs_writeback *wb,
|
|
pgoff_t first, pgoff_t last,
|
|
unsigned offset, unsigned to,
|
|
loff_t size, loff_t pos, loff_t i_size,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_vnode *vnode = wb->vnode;
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSStoreData64,
|
|
(4 + 6 + 3 * 2) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->wb = wb;
|
|
call->key = wb->key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
call->mapping = vnode->vfs_inode.i_mapping;
|
|
call->first = first;
|
|
call->last = last;
|
|
call->first_offset = offset;
|
|
call->last_to = to;
|
|
call->send_pages = true;
|
|
call->store_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++ = 0; /* mask */
|
|
*bp++ = 0; /* 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);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* store a set of pages
|
|
*/
|
|
int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb,
|
|
pgoff_t first, pgoff_t last,
|
|
unsigned offset, unsigned to,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_vnode *vnode = wb->vnode;
|
|
struct afs_call *call;
|
|
loff_t size, pos, i_size;
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
size = to - 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(server, wb, first, last, offset, to,
|
|
size, pos, i_size, wait_mode);
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSStoreData,
|
|
(4 + 6 + 3) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->wb = wb;
|
|
call->key = wb->key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
call->mapping = vnode->vfs_inode.i_mapping;
|
|
call->first = first;
|
|
call->last = last;
|
|
call->first_offset = offset;
|
|
call->last_to = to;
|
|
call->send_pages = true;
|
|
call->store_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++ = 0; /* mask */
|
|
*bp++ = 0; /* 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);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.StoreStatus
|
|
*/
|
|
static int afs_deliver_fs_store_status(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
afs_dataversion_t *store_version;
|
|
struct afs_vnode *vnode = call->reply;
|
|
const __be32 *bp;
|
|
|
|
_enter(",,%u", last);
|
|
|
|
afs_transfer_reply(call, skb);
|
|
if (!last) {
|
|
_leave(" = 0 [more]");
|
|
return 0;
|
|
}
|
|
|
|
if (call->reply_size != call->reply_max) {
|
|
_leave(" = -EBADMSG [%u != %u]",
|
|
call->reply_size, call->reply_max);
|
|
return -EBADMSG;
|
|
}
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
store_version = NULL;
|
|
if (call->operation_ID == FSSTOREDATA)
|
|
store_version = &call->store_version;
|
|
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version);
|
|
/* xdr_decode_AFSVolSync(&bp, call->replyX); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.StoreStatus operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSStoreStatus = {
|
|
.name = "FS.StoreStatus",
|
|
.deliver = afs_deliver_fs_store_status,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSStoreData_as_Status = {
|
|
.name = "FS.StoreData",
|
|
.deliver = afs_deliver_fs_store_status,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
|
|
.name = "FS.StoreData64",
|
|
.deliver = afs_deliver_fs_store_status,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.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_server *server, struct key *key,
|
|
struct afs_vnode *vnode, struct iattr *attr,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
ASSERT(attr->ia_valid & ATTR_SIZE);
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status,
|
|
(4 + 6 + 3 * 2) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
call->store_version = vnode->status.data_version + 1;
|
|
call->operation_ID = FSSTOREDATA;
|
|
|
|
/* 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);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* 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_server *server, struct key *key,
|
|
struct afs_vnode *vnode, struct iattr *attr,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
ASSERT(attr->ia_valid & ATTR_SIZE);
|
|
if (attr->ia_size >> 32)
|
|
return afs_fs_setattr_size64(server, key, vnode, attr,
|
|
wait_mode);
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status,
|
|
(4 + 6 + 3) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
call->store_version = vnode->status.data_version + 1;
|
|
call->operation_ID = FSSTOREDATA;
|
|
|
|
/* 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 */
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* 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_server *server, struct key *key,
|
|
struct afs_vnode *vnode, struct iattr *attr,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
if (attr->ia_valid & ATTR_SIZE)
|
|
return afs_fs_setattr_size(server, key, vnode, attr,
|
|
wait_mode);
|
|
|
|
_enter(",%x,{%x:%u},,",
|
|
key_serial(key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSStoreStatus,
|
|
(4 + 6) * 4,
|
|
(21 + 6) * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
call->operation_ID = FSSTORESTATUS;
|
|
|
|
/* 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);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.GetVolumeStatus
|
|
*/
|
|
static int afs_deliver_fs_get_volume_status(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
const __be32 *bp;
|
|
char *p;
|
|
int ret;
|
|
|
|
_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
|
|
|
|
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, skb, last, call->buffer,
|
|
12 * 4);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
|
|
bp = call->buffer;
|
|
xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2);
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the volume name length */
|
|
case 2:
|
|
ret = afs_extract_data(call, skb, last, &call->tmp, 4);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("volname length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return -EBADMSG;
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the volume name */
|
|
case 3:
|
|
_debug("extract volname");
|
|
if (call->count > 0) {
|
|
ret = afs_extract_data(call, skb, last, call->reply3,
|
|
call->count);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
}
|
|
|
|
p = call->reply3;
|
|
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, skb, last, call->buffer,
|
|
call->count);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
no_volname_padding:
|
|
|
|
/* extract the offline message length */
|
|
case 5:
|
|
ret = afs_extract_data(call, skb, last, &call->tmp, 4);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("offline msg length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return -EBADMSG;
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the offline message */
|
|
case 6:
|
|
_debug("extract offline");
|
|
if (call->count > 0) {
|
|
ret = afs_extract_data(call, skb, last, call->reply3,
|
|
call->count);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
}
|
|
|
|
p = call->reply3;
|
|
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, skb, last, call->buffer,
|
|
call->count);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
no_offline_padding:
|
|
|
|
/* extract the message of the day length */
|
|
case 8:
|
|
ret = afs_extract_data(call, skb, last, &call->tmp, 4);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("motd length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return -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, skb, last, call->reply3,
|
|
call->count);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
}
|
|
|
|
p = call->reply3;
|
|
p[call->count] = 0;
|
|
_debug("motd '%s'", p);
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
|
|
/* extract the message of the day padding */
|
|
if ((call->count & 3) == 0) {
|
|
call->unmarshall++;
|
|
goto no_motd_padding;
|
|
}
|
|
call->count = 4 - (call->count & 3);
|
|
|
|
case 10:
|
|
ret = afs_extract_data(call, skb, last, call->buffer,
|
|
call->count);
|
|
switch (ret) {
|
|
case 0: break;
|
|
case -EAGAIN: return 0;
|
|
default: return ret;
|
|
}
|
|
|
|
call->offset = 0;
|
|
call->unmarshall++;
|
|
no_motd_padding:
|
|
|
|
case 11:
|
|
_debug("trailer %d", skb->len);
|
|
if (skb->len != 0)
|
|
return -EBADMSG;
|
|
break;
|
|
}
|
|
|
|
if (!last)
|
|
return 0;
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* destroy an FS.GetVolumeStatus call
|
|
*/
|
|
static void afs_get_volume_status_call_destructor(struct afs_call *call)
|
|
{
|
|
kfree(call->reply3);
|
|
call->reply3 = NULL;
|
|
afs_flat_call_destructor(call);
|
|
}
|
|
|
|
/*
|
|
* FS.GetVolumeStatus operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSGetVolumeStatus = {
|
|
.name = "FS.GetVolumeStatus",
|
|
.deliver = afs_deliver_fs_get_volume_status,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_get_volume_status_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* fetch the status of a volume
|
|
*/
|
|
int afs_fs_get_volume_status(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *vnode,
|
|
struct afs_volume_status *vs,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
void *tmpbuf;
|
|
|
|
_enter("");
|
|
|
|
tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
|
|
if (!tmpbuf)
|
|
return -ENOMEM;
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4);
|
|
if (!call) {
|
|
kfree(tmpbuf);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->reply2 = vs;
|
|
call->reply3 = tmpbuf;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp[0] = htonl(FSGETVOLUMESTATUS);
|
|
bp[1] = htonl(vnode->fid.vid);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
|
|
*/
|
|
static int afs_deliver_fs_xxxx_lock(struct afs_call *call,
|
|
struct sk_buff *skb, bool last)
|
|
{
|
|
const __be32 *bp;
|
|
|
|
_enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
|
|
|
|
afs_transfer_reply(call, skb);
|
|
if (!last)
|
|
return 0;
|
|
|
|
if (call->reply_size != call->reply_max)
|
|
return -EBADMSG;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
/* xdr_decode_AFSVolSync(&bp, call->replyX); */
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.SetLock operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSSetLock = {
|
|
.name = "FS.SetLock",
|
|
.deliver = afs_deliver_fs_xxxx_lock,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* FS.ExtendLock operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSExtendLock = {
|
|
.name = "FS.ExtendLock",
|
|
.deliver = afs_deliver_fs_xxxx_lock,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* FS.ReleaseLock operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSReleaseLock = {
|
|
.name = "FS.ReleaseLock",
|
|
.deliver = afs_deliver_fs_xxxx_lock,
|
|
.abort_to_error = afs_abort_to_error,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* get a lock on a file
|
|
*/
|
|
int afs_fs_set_lock(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *vnode,
|
|
afs_lock_type_t type,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* 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);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* extend a lock on a file
|
|
*/
|
|
int afs_fs_extend_lock(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *vnode,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSEXTENDLOCK);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|
|
|
|
/*
|
|
* release a lock on a file
|
|
*/
|
|
int afs_fs_release_lock(struct afs_server *server,
|
|
struct key *key,
|
|
struct afs_vnode *vnode,
|
|
const struct afs_wait_mode *wait_mode)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = key;
|
|
call->reply = vnode;
|
|
call->service_id = FS_SERVICE;
|
|
call->port = htons(AFS_FS_PORT);
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
*bp++ = htonl(FSRELEASELOCK);
|
|
*bp++ = htonl(vnode->fid.vid);
|
|
*bp++ = htonl(vnode->fid.vnode);
|
|
*bp++ = htonl(vnode->fid.unique);
|
|
|
|
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
|
|
}
|