X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=fs%2Fafs%2Ffsclient.c;h=4bd0218473a9bb407a9c86be49f0400461621f24;hb=292ec4cf3536a5ed8809e8823341b203e497bbaf;hp=f036b4cc51a6d213abeaaffa5ea815de98180acf;hpb=260a980317dac80182dd76140cf67c6e81d6d3dd;p=safe%2Fjmp%2Flinux-2.6 diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index f036b4c..4bd0218 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -10,6 +10,7 @@ */ #include +#include #include #include #include "internal.h" @@ -33,8 +34,10 @@ static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) */ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, struct afs_file_status *status, - struct afs_vnode *vnode) + struct afs_vnode *vnode, + afs_dataversion_t *store_version) { + afs_dataversion_t expected_version; const __be32 *bp = *_bp; umode_t mode; u64 data_version, size; @@ -65,7 +68,7 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, EXTRACT(status->group); bp++; /* sync counter */ data_version |= (u64) ntohl(*bp++) << 32; - bp++; /* lock count */ + EXTRACT(status->lock_count); size |= (u64) ntohl(*bp++) << 32; bp++; /* spare 4 */ *_bp = bp; @@ -101,14 +104,21 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; } - if (status->data_version != data_version) { + expected_version = status->data_version; + if (store_version) + expected_version = *store_version; + + if (expected_version != data_version) { status->data_version = data_version; if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { _debug("vnode modified %llx on {%x:%u}", - data_version, vnode->fid.vid, vnode->fid.vnode); + (unsigned long long) data_version, + vnode->fid.vid, vnode->fid.vnode); set_bit(AFS_VNODE_MODIFIED, &vnode->flags); set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); } + } else if (store_version) { + status->data_version = data_version; } } @@ -155,6 +165,67 @@ static void xdr_decode_AFSVolSync(const __be32 **_bp, } /* + * encode the requested attributes into an AFSStoreStatus block + */ +static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) +{ + __be32 *bp = *_bp; + u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; + + mask = 0; + if (attr->ia_valid & ATTR_MTIME) { + mask |= AFS_SET_MTIME; + mtime = attr->ia_mtime.tv_sec; + } + + if (attr->ia_valid & ATTR_UID) { + mask |= AFS_SET_OWNER; + owner = attr->ia_uid; + } + + if (attr->ia_valid & ATTR_GID) { + mask |= AFS_SET_GROUP; + group = attr->ia_gid; + } + + if (attr->ia_valid & ATTR_MODE) { + mask |= AFS_SET_MODE; + mode = attr->ia_mode & S_IALLUGO; + } + + *bp++ = htonl(mask); + *bp++ = htonl(mtime); + *bp++ = htonl(owner); + *bp++ = htonl(group); + *bp++ = htonl(mode); + *bp++ = 0; /* segment size */ + *_bp = bp; +} + +/* + * decode an AFSFetchVolumeStatus block + */ +static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, + struct afs_volume_status *vs) +{ + const __be32 *bp = *_bp; + + vs->vid = ntohl(*bp++); + vs->parent_id = ntohl(*bp++); + vs->online = ntohl(*bp++); + vs->in_service = ntohl(*bp++); + vs->blessed = ntohl(*bp++); + vs->needs_salvage = ntohl(*bp++); + vs->type = ntohl(*bp++); + vs->min_quota = ntohl(*bp++); + vs->max_quota = ntohl(*bp++); + vs->blocks_in_use = ntohl(*bp++); + vs->part_blocks_avail = ntohl(*bp++); + vs->part_max_blocks = ntohl(*bp++); + *_bp = bp; +} + +/* * deliver reply data to an FS.FetchStatus */ static int afs_deliver_fs_fetch_status(struct afs_call *call, @@ -174,7 +245,7 @@ static int afs_deliver_fs_fetch_status(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); xdr_decode_AFSCallBack(&bp, vnode); if (call->reply2) xdr_decode_AFSVolSync(&bp, call->reply2); @@ -205,7 +276,7 @@ int afs_fs_fetch_file_status(struct afs_server *server, struct afs_call *call; __be32 *bp; - _enter(",%x,{%x:%d},,", + _enter(",%x,{%x:%u},,", key_serial(key), vnode->fid.vid, vnode->fid.vnode); call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); @@ -246,10 +317,16 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, case 0: call->offset = 0; call->unmarshall++; + if (call->operation_ID != FSFETCHDATA64) { + call->unmarshall++; + goto no_msw; + } - /* extract the returned data length */ + /* extract the upper part of the returned data length of an + * FSFETCHDATA64 op (which should always be 0 using this + * client) */ case 1: - _debug("extract data length"); + _debug("extract data length (MSW)"); ret = afs_extract_data(call, skb, last, &call->tmp, 4); switch (ret) { case 0: break; @@ -258,37 +335,51 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, } call->count = ntohl(call->tmp); - _debug("DATA length: %u", call->count); - if (call->count > PAGE_SIZE) + _debug("DATA length MSW: %u", call->count); + if (call->count > 0) return -EBADMSG; call->offset = 0; call->unmarshall++; - if (call->count < PAGE_SIZE) { - buffer = kmap_atomic(call->reply3, KM_USER0); - memset(buffer + PAGE_SIZE - call->count, 0, - call->count); - kunmap_atomic(buffer, KM_USER0); - } - - /* extract the returned data */ + no_msw: + /* extract the returned data length */ case 2: - _debug("extract data"); - page = call->reply3; - buffer = kmap_atomic(page, KM_USER0); - ret = afs_extract_data(call, skb, last, buffer, call->count); - kunmap_atomic(buffer, KM_USER0); + _debug("extract data length"); + 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("DATA length: %u", call->count); + if (call->count > PAGE_SIZE) + return -EBADMSG; call->offset = 0; call->unmarshall++; - /* extract the metadata */ + /* extract the returned data */ case 3: + _debug("extract data"); + if (call->count > 0) { + page = call->reply3; + buffer = kmap_atomic(page, KM_USER0); + ret = afs_extract_data(call, skb, last, buffer, + call->count); + kunmap_atomic(buffer, KM_USER0); + switch (ret) { + case 0: break; + case -EAGAIN: return 0; + default: return ret; + } + } + + call->offset = 0; + call->unmarshall++; + + /* extract the metadata */ + case 4: ret = afs_extract_data(call, skb, last, call->buffer, (21 + 3 + 6) * 4); switch (ret) { @@ -298,7 +389,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, } bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); xdr_decode_AFSCallBack(&bp, vnode); if (call->reply2) xdr_decode_AFSVolSync(&bp, call->reply2); @@ -306,7 +397,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, call->offset = 0; call->unmarshall++; - case 4: + case 5: _debug("trailer"); if (skb->len != 0) return -EBADMSG; @@ -316,6 +407,14 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, if (!last) return 0; + if (call->count < PAGE_SIZE) { + _debug("clear"); + page = call->reply3; + buffer = kmap_atomic(page, KM_USER0); + memset(buffer + call->count, 0, PAGE_SIZE - call->count); + kunmap_atomic(buffer, KM_USER0); + } + _leave(" = 0 [done]"); return 0; } @@ -330,6 +429,56 @@ static const struct afs_call_type afs_RXFSFetchData = { .destructor = afs_flat_call_destructor, }; +static const struct afs_call_type afs_RXFSFetchData64 = { + .name = "FS.FetchData64", + .deliver = afs_deliver_fs_fetch_data, + .abort_to_error = afs_abort_to_error, + .destructor = afs_flat_call_destructor, +}; + +/* + * fetch data from a very large file + */ +static int afs_fs_fetch_data64(struct afs_server *server, + struct key *key, + struct afs_vnode *vnode, + off_t offset, size_t length, + struct page *buffer, + const struct afs_wait_mode *wait_mode) +{ + struct afs_call *call; + __be32 *bp; + + _enter(""); + + ASSERTCMP(length, <, ULONG_MAX); + + call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); + if (!call) + return -ENOMEM; + + call->key = key; + call->reply = vnode; + call->reply2 = NULL; /* volsync */ + call->reply3 = buffer; + call->service_id = FS_SERVICE; + call->port = htons(AFS_FS_PORT); + call->operation_ID = FSFETCHDATA64; + + /* 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(offset)); + bp[5] = htonl((u32) offset); + bp[6] = 0; + bp[7] = htonl((u32) length); + + return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); +} + /* * fetch data from a file */ @@ -343,6 +492,10 @@ int afs_fs_fetch_data(struct afs_server *server, struct afs_call *call; __be32 *bp; + if (upper_32_bits(offset) || upper_32_bits(offset + length)) + return afs_fs_fetch_data64(server, key, vnode, offset, length, + buffer, wait_mode); + _enter(""); call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); @@ -355,6 +508,7 @@ int afs_fs_fetch_data(struct afs_server *server, call->reply3 = buffer; call->service_id = FS_SERVICE; call->port = htons(AFS_FS_PORT); + call->operation_ID = FSFETCHDATA; /* marshall the parameters */ bp = call->request; @@ -474,8 +628,8 @@ static int afs_deliver_fs_create_vnode(struct afs_call *call, /* 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); - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + 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); */ @@ -572,7 +726,7 @@ static int afs_deliver_fs_remove(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); /* xdr_decode_AFSVolSync(&bp, call->replyX); */ _leave(" = 0 [done]"); @@ -655,8 +809,8 @@ static int afs_deliver_fs_link(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); - xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode); + 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]"); @@ -744,8 +898,8 @@ static int afs_deliver_fs_symlink(struct afs_call *call, /* 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); - xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode); + 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]"); @@ -850,9 +1004,10 @@ static int afs_deliver_fs_rename(struct afs_call *call, /* unmarshall the reply once we've received all of it */ bp = call->buffer; - xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode); + xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); if (new_dvnode != orig_dvnode) - xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode); + xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, + NULL); /* xdr_decode_AFSVolSync(&bp, call->replyX); */ _leave(" = 0 [done]"); @@ -934,3 +1089,816 @@ int afs_fs_rename(struct afs_server *server, 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); +}