| /* AFS File Server client stubs |
| * |
| * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/sched.h> |
| #include <linux/circ_buf.h> |
| #include <linux/iversion.h> |
| #include "internal.h" |
| #include "afs_fs.h" |
| #include "xdr_fs.h" |
| #include "protocol_yfs.h" |
| |
| static const struct afs_fid afs_zero_fid; |
| |
| static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi) |
| { |
| call->cbi = afs_get_cb_interest(cbi); |
| } |
| |
| /* |
| * decode an AFSFid block |
| */ |
| static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) |
| { |
| const __be32 *bp = *_bp; |
| |
| fid->vid = ntohl(*bp++); |
| fid->vnode = ntohl(*bp++); |
| fid->unique = ntohl(*bp++); |
| *_bp = bp; |
| } |
| |
| /* |
| * Dump a bad file status record. |
| */ |
| static void xdr_dump_bad(const __be32 *bp) |
| { |
| __be32 x[4]; |
| int i; |
| |
| pr_notice("AFS XDR: Bad status record\n"); |
| for (i = 0; i < 5 * 4 * 4; i += 16) { |
| memcpy(x, bp, 16); |
| bp += 4; |
| pr_notice("%03x: %08x %08x %08x %08x\n", |
| i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3])); |
| } |
| |
| memcpy(x, bp, 4); |
| pr_notice("0x50: %08x\n", ntohl(x[0])); |
| } |
| |
| /* |
| * Update the core inode struct from a returned status record. |
| */ |
| void afs_update_inode_from_status(struct afs_vnode *vnode, |
| struct afs_file_status *status, |
| const afs_dataversion_t *expected_version, |
| u8 flags) |
| { |
| struct timespec64 t; |
| umode_t mode; |
| |
| t = status->mtime_client; |
| vnode->vfs_inode.i_ctime = t; |
| vnode->vfs_inode.i_mtime = t; |
| vnode->vfs_inode.i_atime = t; |
| |
| if (flags & (AFS_VNODE_META_CHANGED | AFS_VNODE_NOT_YET_SET)) { |
| vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner); |
| vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group); |
| set_nlink(&vnode->vfs_inode, status->nlink); |
| |
| mode = vnode->vfs_inode.i_mode; |
| mode &= ~S_IALLUGO; |
| mode |= status->mode; |
| barrier(); |
| vnode->vfs_inode.i_mode = mode; |
| } |
| |
| if (!(flags & AFS_VNODE_NOT_YET_SET)) { |
| if (expected_version && |
| *expected_version != status->data_version) { |
| _debug("vnode modified %llx on {%llx:%llu} [exp %llx]", |
| (unsigned long long) status->data_version, |
| vnode->fid.vid, vnode->fid.vnode, |
| (unsigned long long) *expected_version); |
| vnode->invalid_before = status->data_version; |
| if (vnode->status.type == AFS_FTYPE_DIR) { |
| if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags)) |
| afs_stat_v(vnode, n_inval); |
| } else { |
| set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); |
| } |
| } else if (vnode->status.type == AFS_FTYPE_DIR) { |
| /* Expected directory change is handled elsewhere so |
| * that we can locally edit the directory and save on a |
| * download. |
| */ |
| if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags)) |
| flags &= ~AFS_VNODE_DATA_CHANGED; |
| } |
| } |
| |
| if (flags & (AFS_VNODE_DATA_CHANGED | AFS_VNODE_NOT_YET_SET)) { |
| inode_set_iversion_raw(&vnode->vfs_inode, status->data_version); |
| i_size_write(&vnode->vfs_inode, status->size); |
| } |
| } |
| |
| /* |
| * decode an AFSFetchStatus block |
| */ |
| static int xdr_decode_AFSFetchStatus(struct afs_call *call, |
| const __be32 **_bp, |
| struct afs_file_status *status, |
| struct afs_vnode *vnode, |
| const afs_dataversion_t *expected_version, |
| struct afs_read *read_req) |
| { |
| const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp; |
| bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus); |
| u64 data_version, size; |
| u32 type, abort_code; |
| u8 flags = 0; |
| |
| abort_code = ntohl(xdr->abort_code); |
| |
| if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) { |
| if (xdr->if_version == htonl(0) && |
| abort_code != 0 && |
| inline_error) { |
| /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus |
| * whereby it doesn't set the interface version in the error |
| * case. |
| */ |
| status->abort_code = abort_code; |
| return 0; |
| } |
| |
| pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version)); |
| goto bad; |
| } |
| |
| if (abort_code != 0 && inline_error) { |
| status->abort_code = abort_code; |
| return 0; |
| } |
| |
| type = ntohl(xdr->type); |
| switch (type) { |
| case AFS_FTYPE_FILE: |
| case AFS_FTYPE_DIR: |
| case AFS_FTYPE_SYMLINK: |
| if (type != status->type && |
| vnode && |
| !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { |
| pr_warning("Vnode %llx:%llx:%x changed type %u to %u\n", |
| vnode->fid.vid, |
| vnode->fid.vnode, |
| vnode->fid.unique, |
| status->type, type); |
| goto bad; |
| } |
| status->type = type; |
| break; |
| default: |
| goto bad; |
| } |
| |
| #define EXTRACT_M(FIELD) \ |
| do { \ |
| u32 x = ntohl(xdr->FIELD); \ |
| if (status->FIELD != x) { \ |
| flags |= AFS_VNODE_META_CHANGED; \ |
| status->FIELD = x; \ |
| } \ |
| } while (0) |
| |
| EXTRACT_M(nlink); |
| EXTRACT_M(author); |
| EXTRACT_M(owner); |
| EXTRACT_M(caller_access); /* call ticket dependent */ |
| EXTRACT_M(anon_access); |
| EXTRACT_M(mode); |
| EXTRACT_M(group); |
| |
| status->mtime_client.tv_sec = ntohl(xdr->mtime_client); |
| status->mtime_client.tv_nsec = 0; |
| status->mtime_server.tv_sec = ntohl(xdr->mtime_server); |
| status->mtime_server.tv_nsec = 0; |
| status->lock_count = ntohl(xdr->lock_count); |
| |
| size = (u64)ntohl(xdr->size_lo); |
| size |= (u64)ntohl(xdr->size_hi) << 32; |
| status->size = size; |
| |
| data_version = (u64)ntohl(xdr->data_version_lo); |
| data_version |= (u64)ntohl(xdr->data_version_hi) << 32; |
| if (data_version != status->data_version) { |
| status->data_version = data_version; |
| flags |= AFS_VNODE_DATA_CHANGED; |
| } |
| |
| if (read_req) { |
| read_req->data_version = data_version; |
| read_req->file_size = size; |
| } |
| |
| *_bp = (const void *)*_bp + sizeof(*xdr); |
| |
| if (vnode) { |
| if (test_bit(AFS_VNODE_UNSET, &vnode->flags)) |
| flags |= AFS_VNODE_NOT_YET_SET; |
| afs_update_inode_from_status(vnode, status, expected_version, |
| flags); |
| } |
| |
| return 0; |
| |
| bad: |
| xdr_dump_bad(*_bp); |
| return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status); |
| } |
| |
| /* |
| * Decode the file status. We need to lock the target vnode if we're going to |
| * update its status so that stat() sees the attributes update atomically. |
| */ |
| static int afs_decode_status(struct afs_call *call, |
| const __be32 **_bp, |
| struct afs_file_status *status, |
| struct afs_vnode *vnode, |
| const afs_dataversion_t *expected_version, |
| struct afs_read *read_req) |
| { |
| int ret; |
| |
| if (!vnode) |
| return xdr_decode_AFSFetchStatus(call, _bp, status, vnode, |
| expected_version, read_req); |
| |
| write_seqlock(&vnode->cb_lock); |
| ret = xdr_decode_AFSFetchStatus(call, _bp, status, vnode, |
| expected_version, read_req); |
| write_sequnlock(&vnode->cb_lock); |
| return ret; |
| } |
| |
| /* |
| * decode an AFSCallBack block |
| */ |
| static void xdr_decode_AFSCallBack(struct afs_call *call, |
| struct afs_vnode *vnode, |
| const __be32 **_bp) |
| { |
| struct afs_cb_interest *old, *cbi = call->cbi; |
| const __be32 *bp = *_bp; |
| u32 cb_expiry; |
| |
| write_seqlock(&vnode->cb_lock); |
| |
| if (!afs_cb_is_broken(call->cb_break, vnode, cbi)) { |
| vnode->cb_version = ntohl(*bp++); |
| cb_expiry = ntohl(*bp++); |
| vnode->cb_type = ntohl(*bp++); |
| vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds(); |
| old = vnode->cb_interest; |
| if (old != call->cbi) { |
| vnode->cb_interest = cbi; |
| cbi = old; |
| } |
| set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); |
| } else { |
| bp += 3; |
| } |
| |
| write_sequnlock(&vnode->cb_lock); |
| call->cbi = cbi; |
| *_bp = bp; |
| } |
| |
| static ktime_t xdr_decode_expiry(struct afs_call *call, u32 expiry) |
| { |
| return ktime_add_ns(call->reply_time, expiry * NSEC_PER_SEC); |
| } |
| |
| static void xdr_decode_AFSCallBack_raw(struct afs_call *call, |
| const __be32 **_bp, |
| struct afs_callback *cb) |
| { |
| const __be32 *bp = *_bp; |
| |
| cb->version = ntohl(*bp++); |
| cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++)); |
| cb->type = ntohl(*bp++); |
| *_bp = bp; |
| } |
| |
| /* |
| * decode an AFSVolSync block |
| */ |
| static void xdr_decode_AFSVolSync(const __be32 **_bp, |
| struct afs_volsync *volsync) |
| { |
| const __be32 *bp = *_bp; |
| u32 creation; |
| |
| creation = ntohl(*bp++); |
| bp++; /* spare2 */ |
| bp++; /* spare3 */ |
| bp++; /* spare4 */ |
| bp++; /* spare5 */ |
| bp++; /* spare6 */ |
| *_bp = bp; |
| |
| if (volsync) |
| volsync->creation = creation; |
| } |
| |
| /* |
| * encode the requested attributes into an AFSStoreStatus block |
| */ |
| static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) |
| { |
| __be32 *bp = *_bp; |
| u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; |
| |
| mask = 0; |
| if (attr->ia_valid & ATTR_MTIME) { |
| mask |= AFS_SET_MTIME; |
| mtime = attr->ia_mtime.tv_sec; |
| } |
| |
| if (attr->ia_valid & ATTR_UID) { |
| mask |= AFS_SET_OWNER; |
| owner = from_kuid(&init_user_ns, attr->ia_uid); |
| } |
| |
| if (attr->ia_valid & ATTR_GID) { |
| mask |= AFS_SET_GROUP; |
| group = from_kgid(&init_user_ns, attr->ia_gid); |
| } |
| |
| if (attr->ia_valid & ATTR_MODE) { |
| mask |= AFS_SET_MODE; |
| mode = attr->ia_mode & S_IALLUGO; |
| } |
| |
| *bp++ = htonl(mask); |
| *bp++ = htonl(mtime); |
| *bp++ = htonl(owner); |
| *bp++ = htonl(group); |
| *bp++ = htonl(mode); |
| *bp++ = 0; /* segment size */ |
| *_bp = bp; |
| } |
| |
| /* |
| * decode an AFSFetchVolumeStatus block |
| */ |
| static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, |
| struct afs_volume_status *vs) |
| { |
| const __be32 *bp = *_bp; |
| |
| vs->vid = ntohl(*bp++); |
| vs->parent_id = ntohl(*bp++); |
| vs->online = ntohl(*bp++); |
| vs->in_service = ntohl(*bp++); |
| vs->blessed = ntohl(*bp++); |
| vs->needs_salvage = ntohl(*bp++); |
| vs->type = ntohl(*bp++); |
| vs->min_quota = ntohl(*bp++); |
| vs->max_quota = ntohl(*bp++); |
| vs->blocks_in_use = ntohl(*bp++); |
| vs->part_blocks_avail = ntohl(*bp++); |
| vs->part_max_blocks = ntohl(*bp++); |
| vs->vol_copy_date = 0; |
| vs->vol_backup_date = 0; |
| *_bp = bp; |
| } |
| |
| /* |
| * deliver reply data to an FS.FetchStatus |
| */ |
| static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call) |
| { |
| struct afs_vnode *vnode = call->reply[0]; |
| const __be32 *bp; |
| int ret; |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| _enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode); |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| xdr_decode_AFSCallBack(call, vnode, &bp); |
| xdr_decode_AFSVolSync(&bp, call->reply[1]); |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.FetchStatus operation type |
| */ |
| static const struct afs_call_type afs_RXFSFetchStatus_vnode = { |
| .name = "FS.FetchStatus(vnode)", |
| .op = afs_FS_FetchStatus, |
| .deliver = afs_deliver_fs_fetch_status_vnode, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * fetch the status information for a file |
| */ |
| int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync, |
| bool new_inode) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_fetch_file_status(fc, volsync, new_inode); |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus_vnode, |
| 16, (21 + 3 + 6) * 4); |
| if (!call) { |
| fc->ac.error = -ENOMEM; |
| return -ENOMEM; |
| } |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->reply[1] = volsync; |
| call->expected_version = new_inode ? 1 : vnode->status.data_version; |
| call->want_reply_time = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| bp[0] = htonl(FSFETCHSTATUS); |
| bp[1] = htonl(vnode->fid.vid); |
| bp[2] = htonl(vnode->fid.vnode); |
| bp[3] = htonl(vnode->fid.unique); |
| |
| call->cb_break = fc->cb_break; |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.FetchData |
| */ |
| static int afs_deliver_fs_fetch_data(struct afs_call *call) |
| { |
| struct afs_vnode *vnode = call->reply[0]; |
| struct afs_read *req = call->reply[2]; |
| const __be32 *bp; |
| 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; |
| call->unmarshall++; |
| if (call->operation_ID == FSFETCHDATA64) { |
| afs_extract_to_tmp64(call); |
| } else { |
| call->tmp_u = htonl(0); |
| afs_extract_to_tmp(call); |
| } |
| |
| /* Fall through - and extract the returned data length into |
| * ->actual_len. This may indicate more or less data than was |
| * requested will be returned. |
| */ |
| case 1: |
| _debug("extract data length"); |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| req->actual_len = be64_to_cpu(call->tmp64); |
| _debug("DATA length: %llu", req->actual_len); |
| |
| if (req->actual_len == 0) |
| goto no_more_data; |
| |
| call->unmarshall++; |
| call->_iter = &req->iter; |
| iov_iter_truncate(&req->iter, min(req->actual_len, req->len)); |
| |
| /* Fall through - and extract the returned data */ |
| case 2: |
| _debug("extract data %zu/%llu", |
| iov_iter_count(&call->iter), req->actual_len); |
| |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| call->_iter = &call->iter; |
| if (req->actual_len <= req->len) |
| goto no_more_data; |
| |
| /* Discard any excess data the server gave us */ |
| iov_iter_discard(&call->iter, READ, req->actual_len - req->len); |
| call->unmarshall = 3; |
| |
| /* Fall through */ |
| case 3: |
| _debug("extract discard %zu/%llu", |
| iov_iter_count(&call->iter), req->actual_len - req->len); |
| |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| no_more_data: |
| call->unmarshall = 4; |
| afs_extract_to_buf(call, (21 + 3 + 6) * 4); |
| |
| /* Fall through - and extract the metadata */ |
| case 4: |
| ret = afs_extract_data(call, false); |
| if (ret < 0) |
| return ret; |
| |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, |
| &vnode->status.data_version, req); |
| if (ret < 0) |
| return ret; |
| xdr_decode_AFSCallBack(call, vnode, &bp); |
| xdr_decode_AFSVolSync(&bp, call->reply[1]); |
| |
| call->unmarshall++; |
| |
| case 5: |
| break; |
| } |
| |
| if (req->read_successful) |
| req->read_successful(vnode, req); |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| static void afs_fetch_data_destructor(struct afs_call *call) |
| { |
| struct afs_read *req = call->reply[2]; |
| |
| afs_put_read(req); |
| afs_flat_call_destructor(call); |
| } |
| |
| /* |
| * FS.FetchData operation type |
| */ |
| static const struct afs_call_type afs_RXFSFetchData = { |
| .name = "FS.FetchData", |
| .op = afs_FS_FetchData, |
| .deliver = afs_deliver_fs_fetch_data, |
| .destructor = afs_fetch_data_destructor, |
| }; |
| |
| static const struct afs_call_type afs_RXFSFetchData64 = { |
| .name = "FS.FetchData64", |
| .op = afs_FS_FetchData64, |
| .deliver = afs_deliver_fs_fetch_data, |
| .destructor = afs_fetch_data_destructor, |
| }; |
| |
| /* |
| * fetch data from a very large file |
| */ |
| static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| _enter(""); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->reply[1] = NULL; /* volsync */ |
| call->reply[2] = req; |
| call->expected_version = vnode->status.data_version; |
| call->want_reply_time = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| bp[0] = htonl(FSFETCHDATA64); |
| bp[1] = htonl(vnode->fid.vid); |
| bp[2] = htonl(vnode->fid.vnode); |
| bp[3] = htonl(vnode->fid.unique); |
| bp[4] = htonl(upper_32_bits(req->pos)); |
| bp[5] = htonl(lower_32_bits(req->pos)); |
| bp[6] = 0; |
| bp[7] = htonl(lower_32_bits(req->len)); |
| |
| refcount_inc(&req->usage); |
| call->cb_break = fc->cb_break; |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * fetch data from a file |
| */ |
| int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_fetch_data(fc, req); |
| |
| if (upper_32_bits(req->pos) || |
| upper_32_bits(req->len) || |
| upper_32_bits(req->pos + req->len)) |
| return afs_fs_fetch_data64(fc, req); |
| |
| _enter(""); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->reply[1] = NULL; /* volsync */ |
| call->reply[2] = req; |
| call->expected_version = vnode->status.data_version; |
| call->want_reply_time = true; |
| req->call_debug_id = call->debug_id; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| bp[0] = htonl(FSFETCHDATA); |
| bp[1] = htonl(vnode->fid.vid); |
| bp[2] = htonl(vnode->fid.vnode); |
| bp[3] = htonl(vnode->fid.unique); |
| bp[4] = htonl(lower_32_bits(req->pos)); |
| bp[5] = htonl(lower_32_bits(req->len)); |
| |
| refcount_inc(&req->usage); |
| call->cb_break = fc->cb_break; |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.CreateFile or an FS.MakeDir |
| */ |
| static int afs_deliver_fs_create_vnode(struct afs_call *call) |
| { |
| struct afs_vnode *vnode = call->reply[0]; |
| const __be32 *bp; |
| int ret; |
| |
| _enter("{%u}", call->unmarshall); |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| xdr_decode_AFSFid(&bp, call->reply[1]); |
| ret = afs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL); |
| if (ret < 0) |
| return ret; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| xdr_decode_AFSCallBack_raw(call, &bp, call->reply[3]); |
| /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.CreateFile and FS.MakeDir operation type |
| */ |
| static const struct afs_call_type afs_RXFSCreateFile = { |
| .name = "FS.CreateFile", |
| .op = afs_FS_CreateFile, |
| .deliver = afs_deliver_fs_create_vnode, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| static const struct afs_call_type afs_RXFSMakeDir = { |
| .name = "FS.MakeDir", |
| .op = afs_FS_MakeDir, |
| .deliver = afs_deliver_fs_create_vnode, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * create a file or make a directory |
| */ |
| int afs_fs_create(struct afs_fs_cursor *fc, |
| const char *name, |
| umode_t mode, |
| u64 current_data_version, |
| struct afs_fid *newfid, |
| struct afs_file_status *newstatus, |
| struct afs_callback *newcb) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| size_t namesz, reqsz, padsz; |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)){ |
| if (S_ISDIR(mode)) |
| return yfs_fs_make_dir(fc, name, mode, current_data_version, |
| newfid, newstatus, newcb); |
| else |
| return yfs_fs_create_file(fc, name, mode, current_data_version, |
| newfid, newstatus, newcb); |
| } |
| |
| _enter(""); |
| |
| namesz = strlen(name); |
| padsz = (4 - (namesz & 3)) & 3; |
| reqsz = (5 * 4) + namesz + padsz + (6 * 4); |
| |
| call = afs_alloc_flat_call( |
| net, S_ISDIR(mode) ? &afs_RXFSMakeDir : &afs_RXFSCreateFile, |
| reqsz, (3 + 21 + 21 + 3 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->reply[1] = newfid; |
| call->reply[2] = newstatus; |
| call->reply[3] = newcb; |
| call->expected_version = current_data_version + 1; |
| call->want_reply_time = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| *bp++ = htonl(namesz); |
| memcpy(bp, name, namesz); |
| bp = (void *) bp + namesz; |
| if (padsz > 0) { |
| memset(bp, 0, padsz); |
| bp = (void *) bp + padsz; |
| } |
| *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
| *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ |
| *bp++ = 0; /* owner */ |
| *bp++ = 0; /* group */ |
| *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ |
| *bp++ = 0; /* segment size */ |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call1(call, &vnode->fid, name); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * Deliver reply data to any operation that returns file status and volume |
| * sync. |
| */ |
| static int afs_deliver_fs_status_and_vol(struct afs_call *call) |
| { |
| struct afs_vnode *vnode = call->reply[0]; |
| const __be32 *bp; |
| int ret; |
| |
| _enter("{%u}", call->unmarshall); |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.RemoveDir/FS.RemoveFile operation type |
| */ |
| static const struct afs_call_type afs_RXFSRemoveFile = { |
| .name = "FS.RemoveFile", |
| .op = afs_FS_RemoveFile, |
| .deliver = afs_deliver_fs_status_and_vol, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| static const struct afs_call_type afs_RXFSRemoveDir = { |
| .name = "FS.RemoveDir", |
| .op = afs_FS_RemoveDir, |
| .deliver = afs_deliver_fs_status_and_vol, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * remove a file or directory |
| */ |
| int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode, |
| const char *name, bool isdir, u64 current_data_version) |
| { |
| struct afs_vnode *dvnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(dvnode); |
| size_t namesz, reqsz, padsz; |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_remove(fc, vnode, name, isdir, current_data_version); |
| |
| _enter(""); |
| |
| namesz = strlen(name); |
| padsz = (4 - (namesz & 3)) & 3; |
| reqsz = (5 * 4) + namesz + padsz; |
| |
| call = afs_alloc_flat_call( |
| net, isdir ? &afs_RXFSRemoveDir : &afs_RXFSRemoveFile, |
| reqsz, (21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = dvnode; |
| call->reply[1] = vnode; |
| call->expected_version = current_data_version + 1; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); |
| *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; |
| } |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call1(call, &dvnode->fid, name); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.Link |
| */ |
| static int afs_deliver_fs_link(struct afs_call *call) |
| { |
| struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1]; |
| const __be32 *bp; |
| int ret; |
| |
| _enter("{%u}", call->unmarshall); |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, NULL, NULL); |
| if (ret < 0) |
| return ret; |
| ret = afs_decode_status(call, &bp, &dvnode->status, dvnode, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.Link operation type |
| */ |
| static const struct afs_call_type afs_RXFSLink = { |
| .name = "FS.Link", |
| .op = afs_FS_Link, |
| .deliver = afs_deliver_fs_link, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * make a hard link |
| */ |
| int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode, |
| const char *name, u64 current_data_version) |
| { |
| struct afs_vnode *dvnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| size_t namesz, reqsz, padsz; |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_link(fc, vnode, name, current_data_version); |
| |
| _enter(""); |
| |
| namesz = strlen(name); |
| padsz = (4 - (namesz & 3)) & 3; |
| reqsz = (5 * 4) + namesz + padsz + (3 * 4); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = dvnode; |
| call->reply[1] = vnode; |
| call->expected_version = current_data_version + 1; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSLINK); |
| *bp++ = htonl(dvnode->fid.vid); |
| *bp++ = htonl(dvnode->fid.vnode); |
| *bp++ = htonl(dvnode->fid.unique); |
| *bp++ = htonl(namesz); |
| memcpy(bp, name, namesz); |
| bp = (void *) bp + namesz; |
| if (padsz > 0) { |
| memset(bp, 0, padsz); |
| bp = (void *) bp + padsz; |
| } |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call1(call, &vnode->fid, name); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.Symlink |
| */ |
| static int afs_deliver_fs_symlink(struct afs_call *call) |
| { |
| struct afs_vnode *vnode = call->reply[0]; |
| const __be32 *bp; |
| int ret; |
| |
| _enter("{%u}", call->unmarshall); |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| xdr_decode_AFSFid(&bp, call->reply[1]); |
| ret = afs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL); |
| if (ret < 0) |
| return ret; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.Symlink operation type |
| */ |
| static const struct afs_call_type afs_RXFSSymlink = { |
| .name = "FS.Symlink", |
| .op = afs_FS_Symlink, |
| .deliver = afs_deliver_fs_symlink, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * create a symbolic link |
| */ |
| int afs_fs_symlink(struct afs_fs_cursor *fc, |
| const char *name, |
| const char *contents, |
| u64 current_data_version, |
| struct afs_fid *newfid, |
| struct afs_file_status *newstatus) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| size_t namesz, reqsz, padsz, c_namesz, c_padsz; |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_symlink(fc, name, contents, current_data_version, |
| newfid, newstatus); |
| |
| _enter(""); |
| |
| namesz = strlen(name); |
| padsz = (4 - (namesz & 3)) & 3; |
| |
| c_namesz = strlen(contents); |
| c_padsz = (4 - (c_namesz & 3)) & 3; |
| |
| reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSSymlink, reqsz, |
| (3 + 21 + 21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->reply[1] = newfid; |
| call->reply[2] = newstatus; |
| call->expected_version = current_data_version + 1; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSSYMLINK); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| *bp++ = htonl(namesz); |
| memcpy(bp, name, namesz); |
| bp = (void *) bp + namesz; |
| if (padsz > 0) { |
| memset(bp, 0, padsz); |
| bp = (void *) bp + padsz; |
| } |
| *bp++ = htonl(c_namesz); |
| memcpy(bp, contents, c_namesz); |
| bp = (void *) bp + c_namesz; |
| if (c_padsz > 0) { |
| memset(bp, 0, c_padsz); |
| bp = (void *) bp + c_padsz; |
| } |
| *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); |
| *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ |
| *bp++ = 0; /* owner */ |
| *bp++ = 0; /* group */ |
| *bp++ = htonl(S_IRWXUGO); /* unix mode */ |
| *bp++ = 0; /* segment size */ |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call1(call, &vnode->fid, name); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.Rename |
| */ |
| static int afs_deliver_fs_rename(struct afs_call *call) |
| { |
| struct afs_vnode *orig_dvnode = call->reply[0], *new_dvnode = call->reply[1]; |
| const __be32 *bp; |
| int ret; |
| |
| _enter("{%u}", call->unmarshall); |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, &orig_dvnode->status, orig_dvnode, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| if (new_dvnode != orig_dvnode) { |
| ret = afs_decode_status(call, &bp, &new_dvnode->status, new_dvnode, |
| &call->expected_version_2, NULL); |
| if (ret < 0) |
| return ret; |
| } |
| /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.Rename operation type |
| */ |
| static const struct afs_call_type afs_RXFSRename = { |
| .name = "FS.Rename", |
| .op = afs_FS_Rename, |
| .deliver = afs_deliver_fs_rename, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * create a symbolic link |
| */ |
| int afs_fs_rename(struct afs_fs_cursor *fc, |
| const char *orig_name, |
| struct afs_vnode *new_dvnode, |
| const char *new_name, |
| u64 current_orig_data_version, |
| u64 current_new_data_version) |
| { |
| struct afs_vnode *orig_dvnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(orig_dvnode); |
| size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_rename(fc, orig_name, |
| new_dvnode, new_name, |
| current_orig_data_version, |
| current_new_data_version); |
| |
| _enter(""); |
| |
| o_namesz = strlen(orig_name); |
| o_padsz = (4 - (o_namesz & 3)) & 3; |
| |
| n_namesz = strlen(new_name); |
| n_padsz = (4 - (n_namesz & 3)) & 3; |
| |
| reqsz = (4 * 4) + |
| 4 + o_namesz + o_padsz + |
| (3 * 4) + |
| 4 + n_namesz + n_padsz; |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = orig_dvnode; |
| call->reply[1] = new_dvnode; |
| call->expected_version = current_orig_data_version + 1; |
| call->expected_version_2 = current_new_data_version + 1; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSRENAME); |
| *bp++ = htonl(orig_dvnode->fid.vid); |
| *bp++ = htonl(orig_dvnode->fid.vnode); |
| *bp++ = htonl(orig_dvnode->fid.unique); |
| *bp++ = htonl(o_namesz); |
| memcpy(bp, orig_name, o_namesz); |
| bp = (void *) bp + o_namesz; |
| if (o_padsz > 0) { |
| memset(bp, 0, o_padsz); |
| bp = (void *) bp + o_padsz; |
| } |
| |
| *bp++ = htonl(new_dvnode->fid.vid); |
| *bp++ = htonl(new_dvnode->fid.vnode); |
| *bp++ = htonl(new_dvnode->fid.unique); |
| *bp++ = htonl(n_namesz); |
| memcpy(bp, new_name, n_namesz); |
| bp = (void *) bp + n_namesz; |
| if (n_padsz > 0) { |
| memset(bp, 0, n_padsz); |
| bp = (void *) bp + n_padsz; |
| } |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.StoreData |
| */ |
| static int afs_deliver_fs_store_data(struct afs_call *call) |
| { |
| struct afs_vnode *vnode = call->reply[0]; |
| const __be32 *bp; |
| int ret; |
| |
| _enter(""); |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
| |
| afs_pages_written_back(vnode, call); |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.StoreData operation type |
| */ |
| static const struct afs_call_type afs_RXFSStoreData = { |
| .name = "FS.StoreData", |
| .op = afs_FS_StoreData, |
| .deliver = afs_deliver_fs_store_data, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| static const struct afs_call_type afs_RXFSStoreData64 = { |
| .name = "FS.StoreData64", |
| .op = afs_FS_StoreData64, |
| .deliver = afs_deliver_fs_store_data, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * store a set of pages to a very large file |
| */ |
| static int afs_fs_store_data64(struct afs_fs_cursor *fc, struct iov_iter *iter, |
| loff_t size, loff_t pos, loff_t i_size) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSStoreData64, |
| (4 + 6 + 3 * 2) * 4, |
| (21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->write_iter = iter; |
| call->write_first = pos >> PAGE_SHIFT; |
| call->write_last = (pos + size - 1) >> PAGE_SHIFT; |
| call->reply[0] = vnode; |
| call->expected_version = vnode->status.data_version + 1; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSSTOREDATA64); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| |
| *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
| *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ |
| *bp++ = 0; /* owner */ |
| *bp++ = 0; /* group */ |
| *bp++ = 0; /* unix mode */ |
| *bp++ = 0; /* segment size */ |
| |
| *bp++ = htonl(pos >> 32); |
| *bp++ = htonl((u32) pos); |
| *bp++ = htonl(size >> 32); |
| *bp++ = htonl((u32) size); |
| *bp++ = htonl(i_size >> 32); |
| *bp++ = htonl((u32) i_size); |
| |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * Write data to a file on the server. |
| */ |
| int afs_fs_store_data(struct afs_fs_cursor *fc, struct iov_iter *iter, loff_t pos) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| loff_t size, i_size; |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_store_data(fc, iter, pos); |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
| |
| size = iov_iter_count(iter); |
| |
| i_size = i_size_read(&vnode->vfs_inode); |
| if (pos + size > i_size) |
| i_size = size + pos; |
| |
| _debug("size %llx, at %llx, i_size %llx", |
| (unsigned long long) size, (unsigned long long) pos, |
| (unsigned long long) i_size); |
| |
| if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
| return afs_fs_store_data64(fc, iter, size, pos, i_size); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSStoreData, |
| (4 + 6 + 3) * 4, |
| (21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->write_iter = iter; |
| call->write_first = pos >> PAGE_SHIFT; |
| call->write_last = (pos + size - 1) >> PAGE_SHIFT; |
| call->reply[0] = vnode; |
| call->expected_version = vnode->status.data_version + 1; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSSTOREDATA); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| |
| *bp++ = htonl(AFS_SET_MTIME); /* mask */ |
| *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */ |
| *bp++ = 0; /* owner */ |
| *bp++ = 0; /* group */ |
| *bp++ = 0; /* unix mode */ |
| *bp++ = 0; /* segment size */ |
| |
| *bp++ = htonl(pos); |
| *bp++ = htonl(size); |
| *bp++ = htonl(i_size); |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.StoreStatus |
| */ |
| static int afs_deliver_fs_store_status(struct afs_call *call) |
| { |
| struct afs_vnode *vnode = call->reply[0]; |
| const __be32 *bp; |
| int ret; |
| |
| _enter(""); |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.StoreStatus operation type |
| */ |
| static const struct afs_call_type afs_RXFSStoreStatus = { |
| .name = "FS.StoreStatus", |
| .op = afs_FS_StoreStatus, |
| .deliver = afs_deliver_fs_store_status, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| static const struct afs_call_type afs_RXFSStoreData_as_Status = { |
| .name = "FS.StoreData", |
| .op = afs_FS_StoreData, |
| .deliver = afs_deliver_fs_store_status, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
| .name = "FS.StoreData64", |
| .op = afs_FS_StoreData64, |
| .deliver = afs_deliver_fs_store_status, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * set the attributes on a very large file, using FS.StoreData rather than |
| * FS.StoreStatus so as to alter the file size also |
| */ |
| static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
| |
| ASSERT(attr->ia_valid & ATTR_SIZE); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status, |
| (4 + 6 + 3 * 2) * 4, |
| (21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->expected_version = vnode->status.data_version + 1; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSSTOREDATA64); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| |
| xdr_encode_AFS_StoreStatus(&bp, attr); |
| |
| *bp++ = htonl(attr->ia_size >> 32); /* position of start of write */ |
| *bp++ = htonl((u32) attr->ia_size); |
| *bp++ = 0; /* size of write */ |
| *bp++ = 0; |
| *bp++ = htonl(attr->ia_size >> 32); /* new file length */ |
| *bp++ = htonl((u32) attr->ia_size); |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus |
| * so as to alter the file size also |
| */ |
| static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
| |
| ASSERT(attr->ia_valid & ATTR_SIZE); |
| if (attr->ia_size >> 32) |
| return afs_fs_setattr_size64(fc, attr); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status, |
| (4 + 6 + 3) * 4, |
| (21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->expected_version = vnode->status.data_version + 1; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSSTOREDATA); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| |
| xdr_encode_AFS_StoreStatus(&bp, attr); |
| |
| *bp++ = htonl(attr->ia_size); /* position of start of write */ |
| *bp++ = 0; /* size of write */ |
| *bp++ = htonl(attr->ia_size); /* new file length */ |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * set the attributes on a file, using FS.StoreData if there's a change in file |
| * size, and FS.StoreStatus otherwise |
| */ |
| int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_setattr(fc, attr); |
| |
| if (attr->ia_valid & ATTR_SIZE) |
| return afs_fs_setattr_size(fc, attr); |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus, |
| (4 + 6) * 4, |
| (21 + 6) * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->expected_version = vnode->status.data_version; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSSTORESTATUS); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| |
| xdr_encode_AFS_StoreStatus(&bp, attr); |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.GetVolumeStatus |
| */ |
| static int afs_deliver_fs_get_volume_status(struct afs_call *call) |
| { |
| const __be32 *bp; |
| char *p; |
| u32 size; |
| int ret; |
| |
| _enter("{%u}", call->unmarshall); |
| |
| switch (call->unmarshall) { |
| case 0: |
| call->unmarshall++; |
| afs_extract_to_buf(call, 12 * 4); |
| |
| /* Fall through - and extract the returned status record */ |
| case 1: |
| _debug("extract status"); |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| bp = call->buffer; |
| xdr_decode_AFSFetchVolumeStatus(&bp, call->reply[1]); |
| call->unmarshall++; |
| afs_extract_to_tmp(call); |
| |
| /* Fall through - and 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, -EBADMSG, |
| afs_eproto_volname_len); |
| size = (call->count + 3) & ~3; /* It's padded */ |
| afs_extract_begin(call, call->reply[2], size); |
| call->unmarshall++; |
| |
| /* Fall through - and extract the volume name */ |
| case 3: |
| _debug("extract volname"); |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| p = call->reply[2]; |
| p[call->count] = 0; |
| _debug("volname '%s'", p); |
| afs_extract_to_tmp(call); |
| call->unmarshall++; |
| |
| /* Fall through - and 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, -EBADMSG, |
| afs_eproto_offline_msg_len); |
| size = (call->count + 3) & ~3; /* It's padded */ |
| afs_extract_begin(call, call->reply[2], size); |
| call->unmarshall++; |
| |
| /* Fall through - and extract the offline message */ |
| case 5: |
| _debug("extract offline"); |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| p = call->reply[2]; |
| p[call->count] = 0; |
| _debug("offline '%s'", p); |
| |
| afs_extract_to_tmp(call); |
| call->unmarshall++; |
| |
| /* Fall through - and 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, -EBADMSG, |
| afs_eproto_motd_len); |
| size = (call->count + 3) & ~3; /* It's padded */ |
| afs_extract_begin(call, call->reply[2], size); |
| call->unmarshall++; |
| |
| /* Fall through - and extract the message of the day */ |
| case 7: |
| _debug("extract motd"); |
| ret = afs_extract_data(call, false); |
| if (ret < 0) |
| return ret; |
| |
| p = call->reply[2]; |
| p[call->count] = 0; |
| _debug("motd '%s'", p); |
| |
| call->unmarshall++; |
| |
| case 8: |
| break; |
| } |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * destroy an FS.GetVolumeStatus call |
| */ |
| static void afs_get_volume_status_call_destructor(struct afs_call *call) |
| { |
| kfree(call->reply[2]); |
| call->reply[2] = NULL; |
| afs_flat_call_destructor(call); |
| } |
| |
| /* |
| * FS.GetVolumeStatus operation type |
| */ |
| static const struct afs_call_type afs_RXFSGetVolumeStatus = { |
| .name = "FS.GetVolumeStatus", |
| .op = afs_FS_GetVolumeStatus, |
| .deliver = afs_deliver_fs_get_volume_status, |
| .destructor = afs_get_volume_status_call_destructor, |
| }; |
| |
| /* |
| * fetch the status of a volume |
| */ |
| int afs_fs_get_volume_status(struct afs_fs_cursor *fc, |
| struct afs_volume_status *vs) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| void *tmpbuf; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_get_volume_status(fc, vs); |
| |
| _enter(""); |
| |
| tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); |
| if (!tmpbuf) |
| return -ENOMEM; |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); |
| if (!call) { |
| kfree(tmpbuf); |
| return -ENOMEM; |
| } |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->reply[1] = vs; |
| call->reply[2] = tmpbuf; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| bp[0] = htonl(FSGETVOLUMESTATUS); |
| bp[1] = htonl(vnode->fid.vid); |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock |
| */ |
| static int afs_deliver_fs_xxxx_lock(struct afs_call *call) |
| { |
| const __be32 *bp; |
| int ret; |
| |
| _enter("{%u}", call->unmarshall); |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */ |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.SetLock operation type |
| */ |
| static const struct afs_call_type afs_RXFSSetLock = { |
| .name = "FS.SetLock", |
| .op = afs_FS_SetLock, |
| .deliver = afs_deliver_fs_xxxx_lock, |
| .done = afs_lock_op_done, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * FS.ExtendLock operation type |
| */ |
| static const struct afs_call_type afs_RXFSExtendLock = { |
| .name = "FS.ExtendLock", |
| .op = afs_FS_ExtendLock, |
| .deliver = afs_deliver_fs_xxxx_lock, |
| .done = afs_lock_op_done, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * FS.ReleaseLock operation type |
| */ |
| static const struct afs_call_type afs_RXFSReleaseLock = { |
| .name = "FS.ReleaseLock", |
| .op = afs_FS_ReleaseLock, |
| .deliver = afs_deliver_fs_xxxx_lock, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * Set a lock on a file |
| */ |
| int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_set_lock(fc, type); |
| |
| _enter(""); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->want_reply_time = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSSETLOCK); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| *bp++ = htonl(type); |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_calli(call, &vnode->fid, type); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * extend a lock on a file |
| */ |
| int afs_fs_extend_lock(struct afs_fs_cursor *fc) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_extend_lock(fc); |
| |
| _enter(""); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->want_reply_time = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSEXTENDLOCK); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * release a lock on a file |
| */ |
| int afs_fs_release_lock(struct afs_fs_cursor *fc) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_release_lock(fc); |
| |
| _enter(""); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSRELEASELOCK); |
| *bp++ = htonl(vnode->fid.vid); |
| *bp++ = htonl(vnode->fid.vnode); |
| *bp++ = htonl(vnode->fid.unique); |
| |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * Deliver reply data to an FS.GiveUpAllCallBacks operation. |
| */ |
| static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call) |
| { |
| return afs_transfer_reply(call); |
| } |
| |
| /* |
| * FS.GiveUpAllCallBacks operation type |
| */ |
| static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = { |
| .name = "FS.GiveUpAllCallBacks", |
| .op = afs_FS_GiveUpAllCallBacks, |
| .deliver = afs_deliver_fs_give_up_all_callbacks, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * Flush all the callbacks we have on a server. |
| */ |
| int afs_fs_give_up_all_callbacks(struct afs_net *net, |
| struct afs_server *server, |
| struct afs_addr_cursor *ac, |
| struct key *key) |
| { |
| struct afs_call *call; |
| __be32 *bp; |
| |
| _enter(""); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0); |
| if (!call) |
| return -ENOMEM; |
| |
| call->key = key; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSGIVEUPALLCALLBACKS); |
| |
| /* Can't take a ref on server */ |
| afs_make_call(ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, ac); |
| } |
| |
| /* |
| * Deliver reply data to an FS.GetCapabilities operation. |
| */ |
| static int afs_deliver_fs_get_capabilities(struct afs_call *call) |
| { |
| u32 count; |
| int ret; |
| |
| _enter("{%u,%zu}", call->unmarshall, iov_iter_count(&call->iter)); |
| |
| switch (call->unmarshall) { |
| case 0: |
| afs_extract_to_tmp(call); |
| call->unmarshall++; |
| |
| /* Fall through - and extract the capabilities word count */ |
| case 1: |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| count = ntohl(call->tmp); |
| |
| call->count = count; |
| call->count2 = count; |
| iov_iter_discard(&call->iter, READ, count * sizeof(__be32)); |
| call->unmarshall++; |
| |
| /* Fall through - and extract capabilities words */ |
| case 2: |
| ret = afs_extract_data(call, false); |
| if (ret < 0) |
| return ret; |
| |
| /* TODO: Examine capabilities */ |
| |
| call->unmarshall++; |
| break; |
| } |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| static void afs_destroy_fs_get_capabilities(struct afs_call *call) |
| { |
| struct afs_server *server = call->reply[0]; |
| |
| afs_put_server(call->net, server); |
| afs_flat_call_destructor(call); |
| } |
| |
| /* |
| * FS.GetCapabilities operation type |
| */ |
| static const struct afs_call_type afs_RXFSGetCapabilities = { |
| .name = "FS.GetCapabilities", |
| .op = afs_FS_GetCapabilities, |
| .deliver = afs_deliver_fs_get_capabilities, |
| .done = afs_fileserver_probe_result, |
| .destructor = afs_destroy_fs_get_capabilities, |
| }; |
| |
| /* |
| * Probe a fileserver for the capabilities that it supports. This can |
| * return up to 196 words. |
| */ |
| struct afs_call *afs_fs_get_capabilities(struct afs_net *net, |
| struct afs_server *server, |
| struct afs_addr_cursor *ac, |
| struct key *key, |
| unsigned int server_index) |
| { |
| struct afs_call *call; |
| __be32 *bp; |
| |
| _enter(""); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4); |
| if (!call) |
| return ERR_PTR(-ENOMEM); |
| |
| call->key = key; |
| call->reply[0] = afs_get_server(server); |
| call->reply[1] = (void *)(long)server_index; |
| call->upgrade = true; |
| call->want_reply_time = true; |
| call->async = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSGETCAPABILITIES); |
| |
| /* Can't take a ref on server */ |
| trace_afs_make_fs_call(call, NULL); |
| afs_make_call(ac, call, GFP_NOFS); |
| return call; |
| } |
| |
| /* |
| * Deliver reply data to an FS.FetchStatus with no vnode. |
| */ |
| static int afs_deliver_fs_fetch_status(struct afs_call *call) |
| { |
| struct afs_file_status *status = call->reply[1]; |
| struct afs_callback *callback = call->reply[2]; |
| struct afs_volsync *volsync = call->reply[3]; |
| struct afs_fid *fid = call->reply[0]; |
| const __be32 *bp; |
| int ret; |
| |
| ret = afs_transfer_reply(call); |
| if (ret < 0) |
| return ret; |
| |
| _enter("{%llx:%llu}", fid->vid, fid->vnode); |
| |
| /* unmarshall the reply once we've received all of it */ |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, status, NULL, |
| &call->expected_version, NULL); |
| if (ret < 0) |
| return ret; |
| xdr_decode_AFSCallBack_raw(call, &bp, callback); |
| xdr_decode_AFSVolSync(&bp, volsync); |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.FetchStatus operation type |
| */ |
| static const struct afs_call_type afs_RXFSFetchStatus = { |
| .name = "FS.FetchStatus", |
| .op = afs_FS_FetchStatus, |
| .deliver = afs_deliver_fs_fetch_status, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * Fetch the status information for a fid without needing a vnode handle. |
| */ |
| int afs_fs_fetch_status(struct afs_fs_cursor *fc, |
| struct afs_net *net, |
| struct afs_fid *fid, |
| struct afs_file_status *status, |
| struct afs_callback *callback, |
| struct afs_volsync *volsync) |
| { |
| struct afs_call *call; |
| __be32 *bp; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_fetch_status(fc, net, fid, status, callback, volsync); |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), fid->vid, fid->vnode); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
| if (!call) { |
| fc->ac.error = -ENOMEM; |
| return -ENOMEM; |
| } |
| |
| call->key = fc->key; |
| call->reply[0] = fid; |
| call->reply[1] = status; |
| call->reply[2] = callback; |
| call->reply[3] = volsync; |
| call->expected_version = 1; /* vnode->status.data_version */ |
| call->want_reply_time = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| bp[0] = htonl(FSFETCHSTATUS); |
| bp[1] = htonl(fid->vid); |
| bp[2] = htonl(fid->vnode); |
| bp[3] = htonl(fid->unique); |
| |
| call->cb_break = fc->cb_break; |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, fid); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * Deliver reply data to an FS.InlineBulkStatus call |
| */ |
| static int afs_deliver_fs_inline_bulk_status(struct afs_call *call) |
| { |
| struct afs_file_status *statuses; |
| struct afs_callback *callbacks; |
| struct afs_vnode *vnode = call->reply[0]; |
| const __be32 *bp; |
| u32 tmp; |
| int ret; |
| |
| _enter("{%u}", call->unmarshall); |
| |
| switch (call->unmarshall) { |
| case 0: |
| afs_extract_to_tmp(call); |
| call->unmarshall++; |
| |
| /* Extract the file status count and array in two steps */ |
| /* Fall through */ |
| 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, call->count2); |
| if (tmp != call->count2) |
| return afs_protocol_error(call, -EBADMSG, |
| afs_eproto_ibulkst_count); |
| |
| call->count = 0; |
| call->unmarshall++; |
| more_counts: |
| afs_extract_to_buf(call, 21 * sizeof(__be32)); |
| |
| /* Fall through */ |
| case 2: |
| _debug("extract status array %u", call->count); |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| bp = call->buffer; |
| statuses = call->reply[1]; |
| ret = afs_decode_status(call, &bp, &statuses[call->count], |
| call->count == 0 ? vnode : NULL, |
| NULL, NULL); |
| if (ret < 0) |
| return ret; |
| |
| call->count++; |
| if (call->count < call->count2) |
| goto more_counts; |
| |
| call->count = 0; |
| call->unmarshall++; |
| afs_extract_to_tmp(call); |
| |
| /* Extract the callback count and array in two steps */ |
| /* Fall through */ |
| 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 != call->count2) |
| return afs_protocol_error(call, -EBADMSG, |
| afs_eproto_ibulkst_cb_count); |
| call->count = 0; |
| call->unmarshall++; |
| more_cbs: |
| afs_extract_to_buf(call, 3 * sizeof(__be32)); |
| |
| /* Fall through */ |
| case 4: |
| _debug("extract CB array"); |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| _debug("unmarshall CB array"); |
| bp = call->buffer; |
| callbacks = call->reply[2]; |
| callbacks[call->count].version = ntohl(bp[0]); |
| callbacks[call->count].expires_at = xdr_decode_expiry(call, ntohl(bp[1])); |
| callbacks[call->count].type = ntohl(bp[2]); |
| statuses = call->reply[1]; |
| if (call->count == 0 && vnode && statuses[0].abort_code == 0) |
| xdr_decode_AFSCallBack(call, vnode, &bp); |
| call->count++; |
| if (call->count < call->count2) |
| goto more_cbs; |
| |
| afs_extract_to_buf(call, 6 * sizeof(__be32)); |
| call->unmarshall++; |
| |
| /* Fall through */ |
| case 5: |
| ret = afs_extract_data(call, false); |
| if (ret < 0) |
| return ret; |
| |
| bp = call->buffer; |
| xdr_decode_AFSVolSync(&bp, call->reply[3]); |
| |
| call->unmarshall++; |
| |
| case 6: |
| break; |
| } |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| /* |
| * FS.InlineBulkStatus operation type |
| */ |
| static const struct afs_call_type afs_RXFSInlineBulkStatus = { |
| .name = "FS.InlineBulkStatus", |
| .op = afs_FS_InlineBulkStatus, |
| .deliver = afs_deliver_fs_inline_bulk_status, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * Fetch the status information for up to 50 files |
| */ |
| int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc, |
| struct afs_net *net, |
| struct afs_fid *fids, |
| struct afs_file_status *statuses, |
| struct afs_callback *callbacks, |
| unsigned int nr_fids, |
| struct afs_volsync *volsync) |
| { |
| struct afs_call *call; |
| __be32 *bp; |
| int i; |
| |
| if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)) |
| return yfs_fs_inline_bulk_status(fc, net, fids, statuses, callbacks, |
| nr_fids, volsync); |
| |
| _enter(",%x,{%llx:%llu},%u", |
| key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSInlineBulkStatus, |
| (2 + nr_fids * 3) * 4, |
| 21 * 4); |
| if (!call) { |
| fc->ac.error = -ENOMEM; |
| return -ENOMEM; |
| } |
| |
| call->key = fc->key; |
| call->reply[0] = NULL; /* vnode for fid[0] */ |
| call->reply[1] = statuses; |
| call->reply[2] = callbacks; |
| call->reply[3] = volsync; |
| call->count2 = nr_fids; |
| call->want_reply_time = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| *bp++ = htonl(FSINLINEBULKSTATUS); |
| *bp++ = htonl(nr_fids); |
| for (i = 0; i < nr_fids; i++) { |
| *bp++ = htonl(fids[i].vid); |
| *bp++ = htonl(fids[i].vnode); |
| *bp++ = htonl(fids[i].unique); |
| } |
| |
| call->cb_break = fc->cb_break; |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &fids[0]); |
| afs_make_call(&fc->ac, call, GFP_NOFS); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * deliver reply data to an FS.FetchACL |
| */ |
| static int afs_deliver_fs_fetch_acl(struct afs_call *call) |
| { |
| struct afs_vnode *vnode = call->reply[1]; |
| 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++; |
| |
| /* extract the returned data length */ |
| case 1: |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| size = call->count2 = ntohl(call->tmp); |
| size = round_up(size, 4); |
| |
| acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); |
| if (!acl) |
| return -ENOMEM; |
| call->reply[0] = acl; |
| acl->size = call->count2; |
| afs_extract_begin(call, acl->data, size); |
| call->unmarshall++; |
| |
| /* extract the returned data */ |
| case 2: |
| ret = afs_extract_data(call, true); |
| if (ret < 0) |
| return ret; |
| |
| afs_extract_to_buf(call, (21 + 6) * 4); |
| call->unmarshall++; |
| |
| /* extract the metadata */ |
| case 3: |
| ret = afs_extract_data(call, false); |
| if (ret < 0) |
| return ret; |
| |
| bp = call->buffer; |
| ret = afs_decode_status(call, &bp, &vnode->status, vnode, |
| &vnode->status.data_version, NULL); |
| if (ret < 0) |
| return ret; |
| xdr_decode_AFSVolSync(&bp, call->reply[2]); |
| |
| call->unmarshall++; |
| |
| case 4: |
| break; |
| } |
| |
| _leave(" = 0 [done]"); |
| return 0; |
| } |
| |
| static void afs_destroy_fs_fetch_acl(struct afs_call *call) |
| { |
| kfree(call->reply[0]); |
| afs_flat_call_destructor(call); |
| } |
| |
| /* |
| * FS.FetchACL operation type |
| */ |
| static const struct afs_call_type afs_RXFSFetchACL = { |
| .name = "FS.FetchACL", |
| .op = afs_FS_FetchACL, |
| .deliver = afs_deliver_fs_fetch_acl, |
| .destructor = afs_destroy_fs_fetch_acl, |
| }; |
| |
| /* |
| * Fetch the ACL for a file. |
| */ |
| struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *fc) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| __be32 *bp; |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
| |
| call = afs_alloc_flat_call(net, &afs_RXFSFetchACL, 16, (21 + 6) * 4); |
| if (!call) { |
| fc->ac.error = -ENOMEM; |
| return ERR_PTR(-ENOMEM); |
| } |
| |
| call->key = fc->key; |
| call->reply[0] = NULL; |
| call->reply[1] = vnode; |
| call->reply[2] = NULL; /* volsync */ |
| call->ret_reply0 = true; |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| bp[0] = htonl(FSFETCHACL); |
| bp[1] = htonl(vnode->fid.vid); |
| bp[2] = htonl(vnode->fid.vnode); |
| bp[3] = htonl(vnode->fid.unique); |
| |
| call->cb_break = fc->cb_break; |
| afs_use_fs_server(call, fc->cbi); |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_KERNEL); |
| return (struct afs_acl *)afs_wait_for_call_to_complete(call, &fc->ac); |
| } |
| |
| /* |
| * FS.StoreACL operation type |
| */ |
| static const struct afs_call_type afs_RXFSStoreACL = { |
| .name = "FS.StoreACL", |
| .op = afs_FS_StoreACL, |
| .deliver = afs_deliver_fs_status_and_vol, |
| .destructor = afs_flat_call_destructor, |
| }; |
| |
| /* |
| * Fetch the ACL for a file. |
| */ |
| int afs_fs_store_acl(struct afs_fs_cursor *fc, const struct afs_acl *acl) |
| { |
| struct afs_vnode *vnode = fc->vnode; |
| struct afs_call *call; |
| struct afs_net *net = afs_v2net(vnode); |
| size_t size; |
| __be32 *bp; |
| |
| _enter(",%x,{%llx:%llu},,", |
| key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); |
| |
| size = round_up(acl->size, 4); |
| call = afs_alloc_flat_call(net, &afs_RXFSStoreACL, |
| 5 * 4 + size, (21 + 6) * 4); |
| if (!call) { |
| fc->ac.error = -ENOMEM; |
| return -ENOMEM; |
| } |
| |
| call->key = fc->key; |
| call->reply[0] = vnode; |
| call->reply[2] = NULL; /* volsync */ |
| |
| /* marshall the parameters */ |
| bp = call->request; |
| bp[0] = htonl(FSSTOREACL); |
| bp[1] = htonl(vnode->fid.vid); |
| bp[2] = htonl(vnode->fid.vnode); |
| bp[3] = htonl(vnode->fid.unique); |
| bp[4] = htonl(acl->size); |
| memcpy(&bp[5], acl->data, acl->size); |
| if (acl->size != size) |
| memset((void *)&bp[5] + acl->size, 0, size - acl->size); |
| |
| trace_afs_make_fs_call(call, &vnode->fid); |
| afs_make_call(&fc->ac, call, GFP_KERNEL); |
| return afs_wait_for_call_to_complete(call, &fc->ac); |
| } |