1 /* AFS File Server client stubs
3 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 #include <linux/init.h>
13 #include <linux/slab.h>
14 #include <linux/sched.h>
15 #include <linux/circ_buf.h>
16 #include <linux/iversion.h>
21 static const struct afs_fid afs_zero_fid;
24 * We need somewhere to discard into in case the server helpfully returns more
25 * than we asked for in FS.FetchData{,64}.
27 static u8 afs_discard_buffer[64];
29 static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
31 call->cbi = afs_get_cb_interest(cbi);
35 * decode an AFSFid block
37 static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
39 const __be32 *bp = *_bp;
41 fid->vid = ntohl(*bp++);
42 fid->vnode = ntohl(*bp++);
43 fid->unique = ntohl(*bp++);
48 * Dump a bad file status record.
50 static void xdr_dump_bad(const __be32 *bp)
55 pr_notice("AFS XDR: Bad status record\n");
56 for (i = 0; i < 5 * 4 * 4; i += 16) {
59 pr_notice("%03x: %08x %08x %08x %08x\n",
60 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
64 pr_notice("0x50: %08x\n", ntohl(x[0]));
68 * Update the core inode struct from a returned status record.
70 void afs_update_inode_from_status(struct afs_vnode *vnode,
71 struct afs_file_status *status,
72 const afs_dataversion_t *expected_version,
78 t.tv_sec = status->mtime_client;
80 vnode->vfs_inode.i_ctime = t;
81 vnode->vfs_inode.i_mtime = t;
82 vnode->vfs_inode.i_atime = t;
84 if (flags & (AFS_VNODE_META_CHANGED | AFS_VNODE_NOT_YET_SET)) {
85 vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner);
86 vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group);
87 set_nlink(&vnode->vfs_inode, status->nlink);
89 mode = vnode->vfs_inode.i_mode;
93 vnode->vfs_inode.i_mode = mode;
96 if (!(flags & AFS_VNODE_NOT_YET_SET)) {
97 if (expected_version &&
98 *expected_version != status->data_version) {
99 _debug("vnode modified %llx on {%x:%u} [exp %llx]",
100 (unsigned long long) status->data_version,
101 vnode->fid.vid, vnode->fid.vnode,
102 (unsigned long long) *expected_version);
103 vnode->invalid_before = status->data_version;
104 if (vnode->status.type == AFS_FTYPE_DIR) {
105 if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
106 afs_stat_v(vnode, n_inval);
108 set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
110 } else if (vnode->status.type == AFS_FTYPE_DIR) {
111 /* Expected directory change is handled elsewhere so
112 * that we can locally edit the directory and save on a
115 if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
116 flags &= ~AFS_VNODE_DATA_CHANGED;
120 if (flags & (AFS_VNODE_DATA_CHANGED | AFS_VNODE_NOT_YET_SET)) {
121 inode_set_iversion_raw(&vnode->vfs_inode, status->data_version);
122 i_size_write(&vnode->vfs_inode, status->size);
127 * decode an AFSFetchStatus block
129 static int xdr_decode_AFSFetchStatus(struct afs_call *call,
131 struct afs_file_status *status,
132 struct afs_vnode *vnode,
133 const afs_dataversion_t *expected_version,
134 struct afs_read *read_req)
136 const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
137 bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
138 u64 data_version, size;
139 u32 type, abort_code;
144 write_seqlock(&vnode->cb_lock);
146 abort_code = ntohl(xdr->abort_code);
148 if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
149 if (xdr->if_version == htonl(0) &&
152 /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
153 * whereby it doesn't set the interface version in the error
156 status->abort_code = abort_code;
161 pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
165 if (abort_code != 0 && inline_error) {
166 status->abort_code = abort_code;
171 type = ntohl(xdr->type);
175 case AFS_FTYPE_SYMLINK:
176 if (type != status->type &&
178 !test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
179 pr_warning("Vnode %x:%x:%x changed type %u to %u\n",
192 #define EXTRACT_M(FIELD) \
194 u32 x = ntohl(xdr->FIELD); \
195 if (status->FIELD != x) { \
196 flags |= AFS_VNODE_META_CHANGED; \
204 EXTRACT_M(caller_access); /* call ticket dependent */
205 EXTRACT_M(anon_access);
209 status->mtime_client = ntohl(xdr->mtime_client);
210 status->mtime_server = ntohl(xdr->mtime_server);
211 status->lock_count = ntohl(xdr->lock_count);
213 size = (u64)ntohl(xdr->size_lo);
214 size |= (u64)ntohl(xdr->size_hi) << 32;
217 data_version = (u64)ntohl(xdr->data_version_lo);
218 data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
219 if (data_version != status->data_version) {
220 status->data_version = data_version;
221 flags |= AFS_VNODE_DATA_CHANGED;
225 read_req->data_version = data_version;
226 read_req->file_size = size;
229 *_bp = (const void *)*_bp + sizeof(*xdr);
232 if (test_bit(AFS_VNODE_UNSET, &vnode->flags))
233 flags |= AFS_VNODE_NOT_YET_SET;
234 afs_update_inode_from_status(vnode, status, expected_version,
242 write_sequnlock(&vnode->cb_lock);
247 ret = afs_protocol_error(call, -EBADMSG);
252 * decode an AFSCallBack block
254 static void xdr_decode_AFSCallBack(struct afs_call *call,
255 struct afs_vnode *vnode,
258 struct afs_cb_interest *old, *cbi = call->cbi;
259 const __be32 *bp = *_bp;
262 write_seqlock(&vnode->cb_lock);
264 if (call->cb_break == afs_cb_break_sum(vnode, cbi)) {
265 vnode->cb_version = ntohl(*bp++);
266 cb_expiry = ntohl(*bp++);
267 vnode->cb_type = ntohl(*bp++);
268 vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds();
269 old = vnode->cb_interest;
270 if (old != call->cbi) {
271 vnode->cb_interest = cbi;
274 set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
279 write_sequnlock(&vnode->cb_lock);
284 static void xdr_decode_AFSCallBack_raw(const __be32 **_bp,
285 struct afs_callback *cb)
287 const __be32 *bp = *_bp;
289 cb->version = ntohl(*bp++);
290 cb->expiry = ntohl(*bp++);
291 cb->type = ntohl(*bp++);
296 * decode an AFSVolSync block
298 static void xdr_decode_AFSVolSync(const __be32 **_bp,
299 struct afs_volsync *volsync)
301 const __be32 *bp = *_bp;
303 volsync->creation = ntohl(*bp++);
313 * encode the requested attributes into an AFSStoreStatus block
315 static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
318 u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0;
321 if (attr->ia_valid & ATTR_MTIME) {
322 mask |= AFS_SET_MTIME;
323 mtime = attr->ia_mtime.tv_sec;
326 if (attr->ia_valid & ATTR_UID) {
327 mask |= AFS_SET_OWNER;
328 owner = from_kuid(&init_user_ns, attr->ia_uid);
331 if (attr->ia_valid & ATTR_GID) {
332 mask |= AFS_SET_GROUP;
333 group = from_kgid(&init_user_ns, attr->ia_gid);
336 if (attr->ia_valid & ATTR_MODE) {
337 mask |= AFS_SET_MODE;
338 mode = attr->ia_mode & S_IALLUGO;
342 *bp++ = htonl(mtime);
343 *bp++ = htonl(owner);
344 *bp++ = htonl(group);
346 *bp++ = 0; /* segment size */
351 * decode an AFSFetchVolumeStatus block
353 static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
354 struct afs_volume_status *vs)
356 const __be32 *bp = *_bp;
358 vs->vid = ntohl(*bp++);
359 vs->parent_id = ntohl(*bp++);
360 vs->online = ntohl(*bp++);
361 vs->in_service = ntohl(*bp++);
362 vs->blessed = ntohl(*bp++);
363 vs->needs_salvage = ntohl(*bp++);
364 vs->type = ntohl(*bp++);
365 vs->min_quota = ntohl(*bp++);
366 vs->max_quota = ntohl(*bp++);
367 vs->blocks_in_use = ntohl(*bp++);
368 vs->part_blocks_avail = ntohl(*bp++);
369 vs->part_max_blocks = ntohl(*bp++);
374 * deliver reply data to an FS.FetchStatus
376 static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
378 struct afs_vnode *vnode = call->reply[0];
382 ret = afs_transfer_reply(call);
386 _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
388 /* unmarshall the reply once we've received all of it */
390 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
391 &call->expected_version, NULL) < 0)
392 return afs_protocol_error(call, -EBADMSG);
393 xdr_decode_AFSCallBack(call, vnode, &bp);
395 xdr_decode_AFSVolSync(&bp, call->reply[1]);
397 _leave(" = 0 [done]");
402 * FS.FetchStatus operation type
404 static const struct afs_call_type afs_RXFSFetchStatus_vnode = {
405 .name = "FS.FetchStatus(vnode)",
406 .op = afs_FS_FetchStatus,
407 .deliver = afs_deliver_fs_fetch_status_vnode,
408 .destructor = afs_flat_call_destructor,
412 * fetch the status information for a file
414 int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync,
417 struct afs_vnode *vnode = fc->vnode;
418 struct afs_call *call;
419 struct afs_net *net = afs_v2net(vnode);
422 _enter(",%x,{%x:%u},,",
423 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
425 call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus_vnode,
426 16, (21 + 3 + 6) * 4);
428 fc->ac.error = -ENOMEM;
433 call->reply[0] = vnode;
434 call->reply[1] = volsync;
435 call->expected_version = new_inode ? 1 : vnode->status.data_version;
437 /* marshall the parameters */
439 bp[0] = htonl(FSFETCHSTATUS);
440 bp[1] = htonl(vnode->fid.vid);
441 bp[2] = htonl(vnode->fid.vnode);
442 bp[3] = htonl(vnode->fid.unique);
444 call->cb_break = fc->cb_break;
445 afs_use_fs_server(call, fc->cbi);
446 trace_afs_make_fs_call(call, &vnode->fid);
447 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
451 * deliver reply data to an FS.FetchData
453 static int afs_deliver_fs_fetch_data(struct afs_call *call)
455 struct afs_vnode *vnode = call->reply[0];
456 struct afs_read *req = call->reply[2];
462 _enter("{%u,%zu/%u;%llu/%llu}",
463 call->unmarshall, call->offset, call->count,
464 req->remain, req->actual_len);
466 switch (call->unmarshall) {
471 if (call->operation_ID != FSFETCHDATA64) {
476 /* extract the upper part of the returned data length of an
477 * FSFETCHDATA64 op (which should always be 0 using this
480 _debug("extract data length (MSW)");
481 ret = afs_extract_data(call, &call->tmp, 4, true);
485 req->actual_len = ntohl(call->tmp);
486 req->actual_len <<= 32;
491 /* extract the returned data length */
493 _debug("extract data length");
494 ret = afs_extract_data(call, &call->tmp, 4, true);
498 req->actual_len |= ntohl(call->tmp);
499 _debug("DATA length: %llu", req->actual_len);
501 req->remain = req->actual_len;
502 call->offset = req->pos & (PAGE_SIZE - 1);
504 if (req->actual_len == 0)
509 ASSERTCMP(req->index, <, req->nr_pages);
510 if (req->remain > PAGE_SIZE - call->offset)
511 size = PAGE_SIZE - call->offset;
514 call->count = call->offset + size;
515 ASSERTCMP(call->count, <=, PAGE_SIZE);
518 /* extract the returned data */
520 _debug("extract data %llu/%llu %zu/%u",
521 req->remain, req->actual_len, call->offset, call->count);
523 buffer = kmap(req->pages[req->index]);
524 ret = afs_extract_data(call, buffer, call->count, true);
525 kunmap(req->pages[req->index]);
528 if (call->offset == PAGE_SIZE) {
530 req->page_done(call, req);
532 if (req->remain > 0) {
534 if (req->index >= req->nr_pages) {
535 call->unmarshall = 4;
543 /* Discard any excess data the server gave us */
546 size = min_t(loff_t, sizeof(afs_discard_buffer), req->remain);
548 _debug("extract discard %llu/%llu %zu/%u",
549 req->remain, req->actual_len, call->offset, call->count);
552 ret = afs_extract_data(call, afs_discard_buffer, call->count, true);
553 req->remain -= call->offset;
561 call->unmarshall = 5;
563 /* extract the metadata */
565 ret = afs_extract_data(call, call->buffer,
566 (21 + 3 + 6) * 4, false);
571 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
572 &vnode->status.data_version, req) < 0)
573 return afs_protocol_error(call, -EBADMSG);
574 xdr_decode_AFSCallBack(call, vnode, &bp);
576 xdr_decode_AFSVolSync(&bp, call->reply[1]);
585 for (; req->index < req->nr_pages; req->index++) {
586 if (call->count < PAGE_SIZE)
587 zero_user_segment(req->pages[req->index],
588 call->count, PAGE_SIZE);
590 req->page_done(call, req);
594 _leave(" = 0 [done]");
598 static void afs_fetch_data_destructor(struct afs_call *call)
600 struct afs_read *req = call->reply[2];
603 afs_flat_call_destructor(call);
607 * FS.FetchData operation type
609 static const struct afs_call_type afs_RXFSFetchData = {
610 .name = "FS.FetchData",
611 .op = afs_FS_FetchData,
612 .deliver = afs_deliver_fs_fetch_data,
613 .destructor = afs_fetch_data_destructor,
616 static const struct afs_call_type afs_RXFSFetchData64 = {
617 .name = "FS.FetchData64",
618 .op = afs_FS_FetchData64,
619 .deliver = afs_deliver_fs_fetch_data,
620 .destructor = afs_fetch_data_destructor,
624 * fetch data from a very large file
626 static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req)
628 struct afs_vnode *vnode = fc->vnode;
629 struct afs_call *call;
630 struct afs_net *net = afs_v2net(vnode);
635 call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
640 call->reply[0] = vnode;
641 call->reply[1] = NULL; /* volsync */
642 call->reply[2] = req;
643 call->expected_version = vnode->status.data_version;
645 /* marshall the parameters */
647 bp[0] = htonl(FSFETCHDATA64);
648 bp[1] = htonl(vnode->fid.vid);
649 bp[2] = htonl(vnode->fid.vnode);
650 bp[3] = htonl(vnode->fid.unique);
651 bp[4] = htonl(upper_32_bits(req->pos));
652 bp[5] = htonl(lower_32_bits(req->pos));
654 bp[7] = htonl(lower_32_bits(req->len));
656 refcount_inc(&req->usage);
657 call->cb_break = fc->cb_break;
658 afs_use_fs_server(call, fc->cbi);
659 trace_afs_make_fs_call(call, &vnode->fid);
660 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
664 * fetch data from a file
666 int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req)
668 struct afs_vnode *vnode = fc->vnode;
669 struct afs_call *call;
670 struct afs_net *net = afs_v2net(vnode);
673 if (upper_32_bits(req->pos) ||
674 upper_32_bits(req->len) ||
675 upper_32_bits(req->pos + req->len))
676 return afs_fs_fetch_data64(fc, req);
680 call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
685 call->reply[0] = vnode;
686 call->reply[1] = NULL; /* volsync */
687 call->reply[2] = req;
688 call->expected_version = vnode->status.data_version;
690 /* marshall the parameters */
692 bp[0] = htonl(FSFETCHDATA);
693 bp[1] = htonl(vnode->fid.vid);
694 bp[2] = htonl(vnode->fid.vnode);
695 bp[3] = htonl(vnode->fid.unique);
696 bp[4] = htonl(lower_32_bits(req->pos));
697 bp[5] = htonl(lower_32_bits(req->len));
699 refcount_inc(&req->usage);
700 call->cb_break = fc->cb_break;
701 afs_use_fs_server(call, fc->cbi);
702 trace_afs_make_fs_call(call, &vnode->fid);
703 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
707 * deliver reply data to an FS.CreateFile or an FS.MakeDir
709 static int afs_deliver_fs_create_vnode(struct afs_call *call)
711 struct afs_vnode *vnode = call->reply[0];
715 _enter("{%u}", call->unmarshall);
717 ret = afs_transfer_reply(call);
721 /* unmarshall the reply once we've received all of it */
723 xdr_decode_AFSFid(&bp, call->reply[1]);
724 if (xdr_decode_AFSFetchStatus(call, &bp, call->reply[2], NULL, NULL, NULL) < 0 ||
725 xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
726 &call->expected_version, NULL) < 0)
727 return afs_protocol_error(call, -EBADMSG);
728 xdr_decode_AFSCallBack_raw(&bp, call->reply[3]);
729 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
731 _leave(" = 0 [done]");
736 * FS.CreateFile and FS.MakeDir operation type
738 static const struct afs_call_type afs_RXFSCreateFile = {
739 .name = "FS.CreateFile",
740 .op = afs_FS_CreateFile,
741 .deliver = afs_deliver_fs_create_vnode,
742 .destructor = afs_flat_call_destructor,
745 static const struct afs_call_type afs_RXFSMakeDir = {
746 .name = "FS.MakeDir",
747 .op = afs_FS_MakeDir,
748 .deliver = afs_deliver_fs_create_vnode,
749 .destructor = afs_flat_call_destructor,
753 * create a file or make a directory
755 int afs_fs_create(struct afs_fs_cursor *fc,
758 u64 current_data_version,
759 struct afs_fid *newfid,
760 struct afs_file_status *newstatus,
761 struct afs_callback *newcb)
763 struct afs_vnode *vnode = fc->vnode;
764 struct afs_call *call;
765 struct afs_net *net = afs_v2net(vnode);
766 size_t namesz, reqsz, padsz;
771 namesz = strlen(name);
772 padsz = (4 - (namesz & 3)) & 3;
773 reqsz = (5 * 4) + namesz + padsz + (6 * 4);
775 call = afs_alloc_flat_call(
776 net, S_ISDIR(mode) ? &afs_RXFSMakeDir : &afs_RXFSCreateFile,
777 reqsz, (3 + 21 + 21 + 3 + 6) * 4);
782 call->reply[0] = vnode;
783 call->reply[1] = newfid;
784 call->reply[2] = newstatus;
785 call->reply[3] = newcb;
786 call->expected_version = current_data_version + 1;
788 /* marshall the parameters */
790 *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE);
791 *bp++ = htonl(vnode->fid.vid);
792 *bp++ = htonl(vnode->fid.vnode);
793 *bp++ = htonl(vnode->fid.unique);
794 *bp++ = htonl(namesz);
795 memcpy(bp, name, namesz);
796 bp = (void *) bp + namesz;
798 memset(bp, 0, padsz);
799 bp = (void *) bp + padsz;
801 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
802 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
803 *bp++ = 0; /* owner */
804 *bp++ = 0; /* group */
805 *bp++ = htonl(mode & S_IALLUGO); /* unix mode */
806 *bp++ = 0; /* segment size */
808 afs_use_fs_server(call, fc->cbi);
809 trace_afs_make_fs_call(call, &vnode->fid);
810 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
814 * deliver reply data to an FS.RemoveFile or FS.RemoveDir
816 static int afs_deliver_fs_remove(struct afs_call *call)
818 struct afs_vnode *vnode = call->reply[0];
822 _enter("{%u}", call->unmarshall);
824 ret = afs_transfer_reply(call);
828 /* unmarshall the reply once we've received all of it */
830 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
831 &call->expected_version, NULL) < 0)
832 return afs_protocol_error(call, -EBADMSG);
833 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
835 _leave(" = 0 [done]");
840 * FS.RemoveDir/FS.RemoveFile operation type
842 static const struct afs_call_type afs_RXFSRemoveFile = {
843 .name = "FS.RemoveFile",
844 .op = afs_FS_RemoveFile,
845 .deliver = afs_deliver_fs_remove,
846 .destructor = afs_flat_call_destructor,
849 static const struct afs_call_type afs_RXFSRemoveDir = {
850 .name = "FS.RemoveDir",
851 .op = afs_FS_RemoveDir,
852 .deliver = afs_deliver_fs_remove,
853 .destructor = afs_flat_call_destructor,
857 * remove a file or directory
859 int afs_fs_remove(struct afs_fs_cursor *fc, const char *name, bool isdir,
860 u64 current_data_version)
862 struct afs_vnode *vnode = fc->vnode;
863 struct afs_call *call;
864 struct afs_net *net = afs_v2net(vnode);
865 size_t namesz, reqsz, padsz;
870 namesz = strlen(name);
871 padsz = (4 - (namesz & 3)) & 3;
872 reqsz = (5 * 4) + namesz + padsz;
874 call = afs_alloc_flat_call(
875 net, isdir ? &afs_RXFSRemoveDir : &afs_RXFSRemoveFile,
876 reqsz, (21 + 6) * 4);
881 call->reply[0] = vnode;
882 call->expected_version = current_data_version + 1;
884 /* marshall the parameters */
886 *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE);
887 *bp++ = htonl(vnode->fid.vid);
888 *bp++ = htonl(vnode->fid.vnode);
889 *bp++ = htonl(vnode->fid.unique);
890 *bp++ = htonl(namesz);
891 memcpy(bp, name, namesz);
892 bp = (void *) bp + namesz;
894 memset(bp, 0, padsz);
895 bp = (void *) bp + padsz;
898 afs_use_fs_server(call, fc->cbi);
899 trace_afs_make_fs_call(call, &vnode->fid);
900 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
904 * deliver reply data to an FS.Link
906 static int afs_deliver_fs_link(struct afs_call *call)
908 struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1];
912 _enter("{%u}", call->unmarshall);
914 ret = afs_transfer_reply(call);
918 /* unmarshall the reply once we've received all of it */
920 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode, NULL, NULL) < 0 ||
921 xdr_decode_AFSFetchStatus(call, &bp, &dvnode->status, dvnode,
922 &call->expected_version, NULL) < 0)
923 return afs_protocol_error(call, -EBADMSG);
924 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
926 _leave(" = 0 [done]");
931 * FS.Link operation type
933 static const struct afs_call_type afs_RXFSLink = {
936 .deliver = afs_deliver_fs_link,
937 .destructor = afs_flat_call_destructor,
943 int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
944 const char *name, u64 current_data_version)
946 struct afs_vnode *dvnode = fc->vnode;
947 struct afs_call *call;
948 struct afs_net *net = afs_v2net(vnode);
949 size_t namesz, reqsz, padsz;
954 namesz = strlen(name);
955 padsz = (4 - (namesz & 3)) & 3;
956 reqsz = (5 * 4) + namesz + padsz + (3 * 4);
958 call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
963 call->reply[0] = dvnode;
964 call->reply[1] = vnode;
965 call->expected_version = current_data_version + 1;
967 /* marshall the parameters */
969 *bp++ = htonl(FSLINK);
970 *bp++ = htonl(dvnode->fid.vid);
971 *bp++ = htonl(dvnode->fid.vnode);
972 *bp++ = htonl(dvnode->fid.unique);
973 *bp++ = htonl(namesz);
974 memcpy(bp, name, namesz);
975 bp = (void *) bp + namesz;
977 memset(bp, 0, padsz);
978 bp = (void *) bp + padsz;
980 *bp++ = htonl(vnode->fid.vid);
981 *bp++ = htonl(vnode->fid.vnode);
982 *bp++ = htonl(vnode->fid.unique);
984 afs_use_fs_server(call, fc->cbi);
985 trace_afs_make_fs_call(call, &vnode->fid);
986 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
990 * deliver reply data to an FS.Symlink
992 static int afs_deliver_fs_symlink(struct afs_call *call)
994 struct afs_vnode *vnode = call->reply[0];
998 _enter("{%u}", call->unmarshall);
1000 ret = afs_transfer_reply(call);
1004 /* unmarshall the reply once we've received all of it */
1006 xdr_decode_AFSFid(&bp, call->reply[1]);
1007 if (xdr_decode_AFSFetchStatus(call, &bp, call->reply[2], NULL, NULL, NULL) ||
1008 xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
1009 &call->expected_version, NULL) < 0)
1010 return afs_protocol_error(call, -EBADMSG);
1011 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1013 _leave(" = 0 [done]");
1018 * FS.Symlink operation type
1020 static const struct afs_call_type afs_RXFSSymlink = {
1021 .name = "FS.Symlink",
1022 .op = afs_FS_Symlink,
1023 .deliver = afs_deliver_fs_symlink,
1024 .destructor = afs_flat_call_destructor,
1028 * create a symbolic link
1030 int afs_fs_symlink(struct afs_fs_cursor *fc,
1032 const char *contents,
1033 u64 current_data_version,
1034 struct afs_fid *newfid,
1035 struct afs_file_status *newstatus)
1037 struct afs_vnode *vnode = fc->vnode;
1038 struct afs_call *call;
1039 struct afs_net *net = afs_v2net(vnode);
1040 size_t namesz, reqsz, padsz, c_namesz, c_padsz;
1045 namesz = strlen(name);
1046 padsz = (4 - (namesz & 3)) & 3;
1048 c_namesz = strlen(contents);
1049 c_padsz = (4 - (c_namesz & 3)) & 3;
1051 reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
1053 call = afs_alloc_flat_call(net, &afs_RXFSSymlink, reqsz,
1054 (3 + 21 + 21 + 6) * 4);
1058 call->key = fc->key;
1059 call->reply[0] = vnode;
1060 call->reply[1] = newfid;
1061 call->reply[2] = newstatus;
1062 call->expected_version = current_data_version + 1;
1064 /* marshall the parameters */
1066 *bp++ = htonl(FSSYMLINK);
1067 *bp++ = htonl(vnode->fid.vid);
1068 *bp++ = htonl(vnode->fid.vnode);
1069 *bp++ = htonl(vnode->fid.unique);
1070 *bp++ = htonl(namesz);
1071 memcpy(bp, name, namesz);
1072 bp = (void *) bp + namesz;
1074 memset(bp, 0, padsz);
1075 bp = (void *) bp + padsz;
1077 *bp++ = htonl(c_namesz);
1078 memcpy(bp, contents, c_namesz);
1079 bp = (void *) bp + c_namesz;
1081 memset(bp, 0, c_padsz);
1082 bp = (void *) bp + c_padsz;
1084 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
1085 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
1086 *bp++ = 0; /* owner */
1087 *bp++ = 0; /* group */
1088 *bp++ = htonl(S_IRWXUGO); /* unix mode */
1089 *bp++ = 0; /* segment size */
1091 afs_use_fs_server(call, fc->cbi);
1092 trace_afs_make_fs_call(call, &vnode->fid);
1093 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1097 * deliver reply data to an FS.Rename
1099 static int afs_deliver_fs_rename(struct afs_call *call)
1101 struct afs_vnode *orig_dvnode = call->reply[0], *new_dvnode = call->reply[1];
1105 _enter("{%u}", call->unmarshall);
1107 ret = afs_transfer_reply(call);
1111 /* unmarshall the reply once we've received all of it */
1113 if (xdr_decode_AFSFetchStatus(call, &bp, &orig_dvnode->status, orig_dvnode,
1114 &call->expected_version, NULL) < 0)
1115 return afs_protocol_error(call, -EBADMSG);
1116 if (new_dvnode != orig_dvnode &&
1117 xdr_decode_AFSFetchStatus(call, &bp, &new_dvnode->status, new_dvnode,
1118 &call->expected_version_2, NULL) < 0)
1119 return afs_protocol_error(call, -EBADMSG);
1120 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1122 _leave(" = 0 [done]");
1127 * FS.Rename operation type
1129 static const struct afs_call_type afs_RXFSRename = {
1130 .name = "FS.Rename",
1131 .op = afs_FS_Rename,
1132 .deliver = afs_deliver_fs_rename,
1133 .destructor = afs_flat_call_destructor,
1137 * create a symbolic link
1139 int afs_fs_rename(struct afs_fs_cursor *fc,
1140 const char *orig_name,
1141 struct afs_vnode *new_dvnode,
1142 const char *new_name,
1143 u64 current_orig_data_version,
1144 u64 current_new_data_version)
1146 struct afs_vnode *orig_dvnode = fc->vnode;
1147 struct afs_call *call;
1148 struct afs_net *net = afs_v2net(orig_dvnode);
1149 size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
1154 o_namesz = strlen(orig_name);
1155 o_padsz = (4 - (o_namesz & 3)) & 3;
1157 n_namesz = strlen(new_name);
1158 n_padsz = (4 - (n_namesz & 3)) & 3;
1161 4 + o_namesz + o_padsz +
1163 4 + n_namesz + n_padsz;
1165 call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
1169 call->key = fc->key;
1170 call->reply[0] = orig_dvnode;
1171 call->reply[1] = new_dvnode;
1172 call->expected_version = current_orig_data_version + 1;
1173 call->expected_version_2 = current_new_data_version + 1;
1175 /* marshall the parameters */
1177 *bp++ = htonl(FSRENAME);
1178 *bp++ = htonl(orig_dvnode->fid.vid);
1179 *bp++ = htonl(orig_dvnode->fid.vnode);
1180 *bp++ = htonl(orig_dvnode->fid.unique);
1181 *bp++ = htonl(o_namesz);
1182 memcpy(bp, orig_name, o_namesz);
1183 bp = (void *) bp + o_namesz;
1185 memset(bp, 0, o_padsz);
1186 bp = (void *) bp + o_padsz;
1189 *bp++ = htonl(new_dvnode->fid.vid);
1190 *bp++ = htonl(new_dvnode->fid.vnode);
1191 *bp++ = htonl(new_dvnode->fid.unique);
1192 *bp++ = htonl(n_namesz);
1193 memcpy(bp, new_name, n_namesz);
1194 bp = (void *) bp + n_namesz;
1196 memset(bp, 0, n_padsz);
1197 bp = (void *) bp + n_padsz;
1200 afs_use_fs_server(call, fc->cbi);
1201 trace_afs_make_fs_call(call, &orig_dvnode->fid);
1202 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1206 * deliver reply data to an FS.StoreData
1208 static int afs_deliver_fs_store_data(struct afs_call *call)
1210 struct afs_vnode *vnode = call->reply[0];
1216 ret = afs_transfer_reply(call);
1220 /* unmarshall the reply once we've received all of it */
1222 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
1223 &call->expected_version, NULL) < 0)
1224 return afs_protocol_error(call, -EBADMSG);
1225 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1227 afs_pages_written_back(vnode, call);
1229 _leave(" = 0 [done]");
1234 * FS.StoreData operation type
1236 static const struct afs_call_type afs_RXFSStoreData = {
1237 .name = "FS.StoreData",
1238 .op = afs_FS_StoreData,
1239 .deliver = afs_deliver_fs_store_data,
1240 .destructor = afs_flat_call_destructor,
1243 static const struct afs_call_type afs_RXFSStoreData64 = {
1244 .name = "FS.StoreData64",
1245 .op = afs_FS_StoreData64,
1246 .deliver = afs_deliver_fs_store_data,
1247 .destructor = afs_flat_call_destructor,
1251 * store a set of pages to a very large file
1253 static int afs_fs_store_data64(struct afs_fs_cursor *fc,
1254 struct address_space *mapping,
1255 pgoff_t first, pgoff_t last,
1256 unsigned offset, unsigned to,
1257 loff_t size, loff_t pos, loff_t i_size)
1259 struct afs_vnode *vnode = fc->vnode;
1260 struct afs_call *call;
1261 struct afs_net *net = afs_v2net(vnode);
1264 _enter(",%x,{%x:%u},,",
1265 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1267 call = afs_alloc_flat_call(net, &afs_RXFSStoreData64,
1268 (4 + 6 + 3 * 2) * 4,
1273 call->key = fc->key;
1274 call->mapping = mapping;
1275 call->reply[0] = vnode;
1276 call->first = first;
1278 call->first_offset = offset;
1280 call->send_pages = true;
1281 call->expected_version = vnode->status.data_version + 1;
1283 /* marshall the parameters */
1285 *bp++ = htonl(FSSTOREDATA64);
1286 *bp++ = htonl(vnode->fid.vid);
1287 *bp++ = htonl(vnode->fid.vnode);
1288 *bp++ = htonl(vnode->fid.unique);
1290 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1291 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
1292 *bp++ = 0; /* owner */
1293 *bp++ = 0; /* group */
1294 *bp++ = 0; /* unix mode */
1295 *bp++ = 0; /* segment size */
1297 *bp++ = htonl(pos >> 32);
1298 *bp++ = htonl((u32) pos);
1299 *bp++ = htonl(size >> 32);
1300 *bp++ = htonl((u32) size);
1301 *bp++ = htonl(i_size >> 32);
1302 *bp++ = htonl((u32) i_size);
1304 trace_afs_make_fs_call(call, &vnode->fid);
1305 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1309 * store a set of pages
1311 int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
1312 pgoff_t first, pgoff_t last,
1313 unsigned offset, unsigned to)
1315 struct afs_vnode *vnode = fc->vnode;
1316 struct afs_call *call;
1317 struct afs_net *net = afs_v2net(vnode);
1318 loff_t size, pos, i_size;
1321 _enter(",%x,{%x:%u},,",
1322 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1324 size = (loff_t)to - (loff_t)offset;
1326 size += (loff_t)(last - first) << PAGE_SHIFT;
1327 pos = (loff_t)first << PAGE_SHIFT;
1330 i_size = i_size_read(&vnode->vfs_inode);
1331 if (pos + size > i_size)
1332 i_size = size + pos;
1334 _debug("size %llx, at %llx, i_size %llx",
1335 (unsigned long long) size, (unsigned long long) pos,
1336 (unsigned long long) i_size);
1338 if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32)
1339 return afs_fs_store_data64(fc, mapping, first, last, offset, to,
1342 call = afs_alloc_flat_call(net, &afs_RXFSStoreData,
1348 call->key = fc->key;
1349 call->mapping = mapping;
1350 call->reply[0] = vnode;
1351 call->first = first;
1353 call->first_offset = offset;
1355 call->send_pages = true;
1356 call->expected_version = vnode->status.data_version + 1;
1358 /* marshall the parameters */
1360 *bp++ = htonl(FSSTOREDATA);
1361 *bp++ = htonl(vnode->fid.vid);
1362 *bp++ = htonl(vnode->fid.vnode);
1363 *bp++ = htonl(vnode->fid.unique);
1365 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1366 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
1367 *bp++ = 0; /* owner */
1368 *bp++ = 0; /* group */
1369 *bp++ = 0; /* unix mode */
1370 *bp++ = 0; /* segment size */
1373 *bp++ = htonl(size);
1374 *bp++ = htonl(i_size);
1376 afs_use_fs_server(call, fc->cbi);
1377 trace_afs_make_fs_call(call, &vnode->fid);
1378 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1382 * deliver reply data to an FS.StoreStatus
1384 static int afs_deliver_fs_store_status(struct afs_call *call)
1386 struct afs_vnode *vnode = call->reply[0];
1392 ret = afs_transfer_reply(call);
1396 /* unmarshall the reply once we've received all of it */
1398 if (xdr_decode_AFSFetchStatus(call, &bp, &vnode->status, vnode,
1399 &call->expected_version, NULL) < 0)
1400 return afs_protocol_error(call, -EBADMSG);
1401 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1403 _leave(" = 0 [done]");
1408 * FS.StoreStatus operation type
1410 static const struct afs_call_type afs_RXFSStoreStatus = {
1411 .name = "FS.StoreStatus",
1412 .op = afs_FS_StoreStatus,
1413 .deliver = afs_deliver_fs_store_status,
1414 .destructor = afs_flat_call_destructor,
1417 static const struct afs_call_type afs_RXFSStoreData_as_Status = {
1418 .name = "FS.StoreData",
1419 .op = afs_FS_StoreData,
1420 .deliver = afs_deliver_fs_store_status,
1421 .destructor = afs_flat_call_destructor,
1424 static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
1425 .name = "FS.StoreData64",
1426 .op = afs_FS_StoreData64,
1427 .deliver = afs_deliver_fs_store_status,
1428 .destructor = afs_flat_call_destructor,
1432 * set the attributes on a very large file, using FS.StoreData rather than
1433 * FS.StoreStatus so as to alter the file size also
1435 static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr)
1437 struct afs_vnode *vnode = fc->vnode;
1438 struct afs_call *call;
1439 struct afs_net *net = afs_v2net(vnode);
1442 _enter(",%x,{%x:%u},,",
1443 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1445 ASSERT(attr->ia_valid & ATTR_SIZE);
1447 call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status,
1448 (4 + 6 + 3 * 2) * 4,
1453 call->key = fc->key;
1454 call->reply[0] = vnode;
1455 call->expected_version = vnode->status.data_version + 1;
1457 /* marshall the parameters */
1459 *bp++ = htonl(FSSTOREDATA64);
1460 *bp++ = htonl(vnode->fid.vid);
1461 *bp++ = htonl(vnode->fid.vnode);
1462 *bp++ = htonl(vnode->fid.unique);
1464 xdr_encode_AFS_StoreStatus(&bp, attr);
1466 *bp++ = 0; /* position of start of write */
1468 *bp++ = 0; /* size of write */
1470 *bp++ = htonl(attr->ia_size >> 32); /* new file length */
1471 *bp++ = htonl((u32) attr->ia_size);
1473 afs_use_fs_server(call, fc->cbi);
1474 trace_afs_make_fs_call(call, &vnode->fid);
1475 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1479 * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
1480 * so as to alter the file size also
1482 static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr)
1484 struct afs_vnode *vnode = fc->vnode;
1485 struct afs_call *call;
1486 struct afs_net *net = afs_v2net(vnode);
1489 _enter(",%x,{%x:%u},,",
1490 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1492 ASSERT(attr->ia_valid & ATTR_SIZE);
1493 if (attr->ia_size >> 32)
1494 return afs_fs_setattr_size64(fc, attr);
1496 call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status,
1502 call->key = fc->key;
1503 call->reply[0] = vnode;
1504 call->expected_version = vnode->status.data_version + 1;
1506 /* marshall the parameters */
1508 *bp++ = htonl(FSSTOREDATA);
1509 *bp++ = htonl(vnode->fid.vid);
1510 *bp++ = htonl(vnode->fid.vnode);
1511 *bp++ = htonl(vnode->fid.unique);
1513 xdr_encode_AFS_StoreStatus(&bp, attr);
1515 *bp++ = 0; /* position of start of write */
1516 *bp++ = 0; /* size of write */
1517 *bp++ = htonl(attr->ia_size); /* new file length */
1519 afs_use_fs_server(call, fc->cbi);
1520 trace_afs_make_fs_call(call, &vnode->fid);
1521 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1525 * set the attributes on a file, using FS.StoreData if there's a change in file
1526 * size, and FS.StoreStatus otherwise
1528 int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr)
1530 struct afs_vnode *vnode = fc->vnode;
1531 struct afs_call *call;
1532 struct afs_net *net = afs_v2net(vnode);
1535 if (attr->ia_valid & ATTR_SIZE)
1536 return afs_fs_setattr_size(fc, attr);
1538 _enter(",%x,{%x:%u},,",
1539 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1541 call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus,
1547 call->key = fc->key;
1548 call->reply[0] = vnode;
1549 call->expected_version = vnode->status.data_version;
1551 /* marshall the parameters */
1553 *bp++ = htonl(FSSTORESTATUS);
1554 *bp++ = htonl(vnode->fid.vid);
1555 *bp++ = htonl(vnode->fid.vnode);
1556 *bp++ = htonl(vnode->fid.unique);
1558 xdr_encode_AFS_StoreStatus(&bp, attr);
1560 afs_use_fs_server(call, fc->cbi);
1561 trace_afs_make_fs_call(call, &vnode->fid);
1562 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1566 * deliver reply data to an FS.GetVolumeStatus
1568 static int afs_deliver_fs_get_volume_status(struct afs_call *call)
1574 _enter("{%u}", call->unmarshall);
1576 switch (call->unmarshall) {
1581 /* extract the returned status record */
1583 _debug("extract status");
1584 ret = afs_extract_data(call, call->buffer,
1590 xdr_decode_AFSFetchVolumeStatus(&bp, call->reply[1]);
1594 /* extract the volume name length */
1596 ret = afs_extract_data(call, &call->tmp, 4, true);
1600 call->count = ntohl(call->tmp);
1601 _debug("volname length: %u", call->count);
1602 if (call->count >= AFSNAMEMAX)
1603 return afs_protocol_error(call, -EBADMSG);
1607 /* extract the volume name */
1609 _debug("extract volname");
1610 if (call->count > 0) {
1611 ret = afs_extract_data(call, call->reply[2],
1619 _debug("volname '%s'", p);
1624 /* extract the volume name padding */
1625 if ((call->count & 3) == 0) {
1627 goto no_volname_padding;
1629 call->count = 4 - (call->count & 3);
1632 ret = afs_extract_data(call, call->buffer,
1641 /* extract the offline message length */
1643 ret = afs_extract_data(call, &call->tmp, 4, true);
1647 call->count = ntohl(call->tmp);
1648 _debug("offline msg length: %u", call->count);
1649 if (call->count >= AFSNAMEMAX)
1650 return afs_protocol_error(call, -EBADMSG);
1654 /* extract the offline message */
1656 _debug("extract offline");
1657 if (call->count > 0) {
1658 ret = afs_extract_data(call, call->reply[2],
1666 _debug("offline '%s'", p);
1671 /* extract the offline message padding */
1672 if ((call->count & 3) == 0) {
1674 goto no_offline_padding;
1676 call->count = 4 - (call->count & 3);
1679 ret = afs_extract_data(call, call->buffer,
1688 /* extract the message of the day length */
1690 ret = afs_extract_data(call, &call->tmp, 4, true);
1694 call->count = ntohl(call->tmp);
1695 _debug("motd length: %u", call->count);
1696 if (call->count >= AFSNAMEMAX)
1697 return afs_protocol_error(call, -EBADMSG);
1701 /* extract the message of the day */
1703 _debug("extract motd");
1704 if (call->count > 0) {
1705 ret = afs_extract_data(call, call->reply[2],
1713 _debug("motd '%s'", p);
1718 /* extract the message of the day padding */
1719 call->count = (4 - (call->count & 3)) & 3;
1722 ret = afs_extract_data(call, call->buffer,
1723 call->count, false);
1733 _leave(" = 0 [done]");
1738 * destroy an FS.GetVolumeStatus call
1740 static void afs_get_volume_status_call_destructor(struct afs_call *call)
1742 kfree(call->reply[2]);
1743 call->reply[2] = NULL;
1744 afs_flat_call_destructor(call);
1748 * FS.GetVolumeStatus operation type
1750 static const struct afs_call_type afs_RXFSGetVolumeStatus = {
1751 .name = "FS.GetVolumeStatus",
1752 .op = afs_FS_GetVolumeStatus,
1753 .deliver = afs_deliver_fs_get_volume_status,
1754 .destructor = afs_get_volume_status_call_destructor,
1758 * fetch the status of a volume
1760 int afs_fs_get_volume_status(struct afs_fs_cursor *fc,
1761 struct afs_volume_status *vs)
1763 struct afs_vnode *vnode = fc->vnode;
1764 struct afs_call *call;
1765 struct afs_net *net = afs_v2net(vnode);
1771 tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
1775 call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4);
1781 call->key = fc->key;
1782 call->reply[0] = vnode;
1783 call->reply[1] = vs;
1784 call->reply[2] = tmpbuf;
1786 /* marshall the parameters */
1788 bp[0] = htonl(FSGETVOLUMESTATUS);
1789 bp[1] = htonl(vnode->fid.vid);
1791 afs_use_fs_server(call, fc->cbi);
1792 trace_afs_make_fs_call(call, &vnode->fid);
1793 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1797 * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
1799 static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
1804 _enter("{%u}", call->unmarshall);
1806 ret = afs_transfer_reply(call);
1810 /* unmarshall the reply once we've received all of it */
1812 /* xdr_decode_AFSVolSync(&bp, call->reply[X]); */
1814 _leave(" = 0 [done]");
1819 * FS.SetLock operation type
1821 static const struct afs_call_type afs_RXFSSetLock = {
1822 .name = "FS.SetLock",
1823 .op = afs_FS_SetLock,
1824 .deliver = afs_deliver_fs_xxxx_lock,
1825 .destructor = afs_flat_call_destructor,
1829 * FS.ExtendLock operation type
1831 static const struct afs_call_type afs_RXFSExtendLock = {
1832 .name = "FS.ExtendLock",
1833 .op = afs_FS_ExtendLock,
1834 .deliver = afs_deliver_fs_xxxx_lock,
1835 .destructor = afs_flat_call_destructor,
1839 * FS.ReleaseLock operation type
1841 static const struct afs_call_type afs_RXFSReleaseLock = {
1842 .name = "FS.ReleaseLock",
1843 .op = afs_FS_ReleaseLock,
1844 .deliver = afs_deliver_fs_xxxx_lock,
1845 .destructor = afs_flat_call_destructor,
1849 * Set a lock on a file
1851 int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type)
1853 struct afs_vnode *vnode = fc->vnode;
1854 struct afs_call *call;
1855 struct afs_net *net = afs_v2net(vnode);
1860 call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
1864 call->key = fc->key;
1865 call->reply[0] = vnode;
1867 /* marshall the parameters */
1869 *bp++ = htonl(FSSETLOCK);
1870 *bp++ = htonl(vnode->fid.vid);
1871 *bp++ = htonl(vnode->fid.vnode);
1872 *bp++ = htonl(vnode->fid.unique);
1873 *bp++ = htonl(type);
1875 afs_use_fs_server(call, fc->cbi);
1876 trace_afs_make_fs_call(call, &vnode->fid);
1877 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1881 * extend a lock on a file
1883 int afs_fs_extend_lock(struct afs_fs_cursor *fc)
1885 struct afs_vnode *vnode = fc->vnode;
1886 struct afs_call *call;
1887 struct afs_net *net = afs_v2net(vnode);
1892 call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
1896 call->key = fc->key;
1897 call->reply[0] = vnode;
1899 /* marshall the parameters */
1901 *bp++ = htonl(FSEXTENDLOCK);
1902 *bp++ = htonl(vnode->fid.vid);
1903 *bp++ = htonl(vnode->fid.vnode);
1904 *bp++ = htonl(vnode->fid.unique);
1906 afs_use_fs_server(call, fc->cbi);
1907 trace_afs_make_fs_call(call, &vnode->fid);
1908 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1912 * release a lock on a file
1914 int afs_fs_release_lock(struct afs_fs_cursor *fc)
1916 struct afs_vnode *vnode = fc->vnode;
1917 struct afs_call *call;
1918 struct afs_net *net = afs_v2net(vnode);
1923 call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
1927 call->key = fc->key;
1928 call->reply[0] = vnode;
1930 /* marshall the parameters */
1932 *bp++ = htonl(FSRELEASELOCK);
1933 *bp++ = htonl(vnode->fid.vid);
1934 *bp++ = htonl(vnode->fid.vnode);
1935 *bp++ = htonl(vnode->fid.unique);
1937 afs_use_fs_server(call, fc->cbi);
1938 trace_afs_make_fs_call(call, &vnode->fid);
1939 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
1943 * Deliver reply data to an FS.GiveUpAllCallBacks operation.
1945 static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call)
1947 return afs_transfer_reply(call);
1951 * FS.GiveUpAllCallBacks operation type
1953 static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = {
1954 .name = "FS.GiveUpAllCallBacks",
1955 .op = afs_FS_GiveUpAllCallBacks,
1956 .deliver = afs_deliver_fs_give_up_all_callbacks,
1957 .destructor = afs_flat_call_destructor,
1961 * Flush all the callbacks we have on a server.
1963 int afs_fs_give_up_all_callbacks(struct afs_net *net,
1964 struct afs_server *server,
1965 struct afs_addr_cursor *ac,
1968 struct afs_call *call;
1973 call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0);
1979 /* marshall the parameters */
1981 *bp++ = htonl(FSGIVEUPALLCALLBACKS);
1983 /* Can't take a ref on server */
1984 return afs_make_call(ac, call, GFP_NOFS, false);
1988 * Deliver reply data to an FS.GetCapabilities operation.
1990 static int afs_deliver_fs_get_capabilities(struct afs_call *call)
1995 _enter("{%u,%zu/%u}", call->unmarshall, call->offset, call->count);
1998 switch (call->unmarshall) {
2003 /* Extract the capabilities word count */
2005 ret = afs_extract_data(call, &call->tmp,
2011 count = ntohl(call->tmp);
2013 call->count = count;
2014 call->count2 = count;
2018 /* Extract capabilities words */
2020 count = min(call->count, 16U);
2021 ret = afs_extract_data(call, call->buffer,
2022 count * sizeof(__be32),
2027 /* TODO: Examine capabilities */
2029 call->count -= count;
2030 if (call->count > 0)
2037 _leave(" = 0 [done]");
2042 * FS.GetCapabilities operation type
2044 static const struct afs_call_type afs_RXFSGetCapabilities = {
2045 .name = "FS.GetCapabilities",
2046 .op = afs_FS_GetCapabilities,
2047 .deliver = afs_deliver_fs_get_capabilities,
2048 .destructor = afs_flat_call_destructor,
2052 * Probe a fileserver for the capabilities that it supports. This can
2053 * return up to 196 words.
2055 int afs_fs_get_capabilities(struct afs_net *net,
2056 struct afs_server *server,
2057 struct afs_addr_cursor *ac,
2060 struct afs_call *call;
2065 call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
2071 /* marshall the parameters */
2073 *bp++ = htonl(FSGETCAPABILITIES);
2075 /* Can't take a ref on server */
2076 trace_afs_make_fs_call(call, NULL);
2077 return afs_make_call(ac, call, GFP_NOFS, false);
2081 * Deliver reply data to an FS.FetchStatus with no vnode.
2083 static int afs_deliver_fs_fetch_status(struct afs_call *call)
2085 struct afs_file_status *status = call->reply[1];
2086 struct afs_callback *callback = call->reply[2];
2087 struct afs_volsync *volsync = call->reply[3];
2088 struct afs_vnode *vnode = call->reply[0];
2092 ret = afs_transfer_reply(call);
2096 _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
2098 /* unmarshall the reply once we've received all of it */
2100 xdr_decode_AFSFetchStatus(call, &bp, status, vnode,
2101 &call->expected_version, NULL);
2102 callback[call->count].version = ntohl(bp[0]);
2103 callback[call->count].expiry = ntohl(bp[1]);
2104 callback[call->count].type = ntohl(bp[2]);
2106 xdr_decode_AFSCallBack(call, vnode, &bp);
2110 xdr_decode_AFSVolSync(&bp, volsync);
2112 _leave(" = 0 [done]");
2117 * FS.FetchStatus operation type
2119 static const struct afs_call_type afs_RXFSFetchStatus = {
2120 .name = "FS.FetchStatus",
2121 .op = afs_FS_FetchStatus,
2122 .deliver = afs_deliver_fs_fetch_status,
2123 .destructor = afs_flat_call_destructor,
2127 * Fetch the status information for a fid without needing a vnode handle.
2129 int afs_fs_fetch_status(struct afs_fs_cursor *fc,
2130 struct afs_net *net,
2131 struct afs_fid *fid,
2132 struct afs_file_status *status,
2133 struct afs_callback *callback,
2134 struct afs_volsync *volsync)
2136 struct afs_call *call;
2139 _enter(",%x,{%x:%u},,",
2140 key_serial(fc->key), fid->vid, fid->vnode);
2142 call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4);
2144 fc->ac.error = -ENOMEM;
2148 call->key = fc->key;
2149 call->reply[0] = NULL; /* vnode for fid[0] */
2150 call->reply[1] = status;
2151 call->reply[2] = callback;
2152 call->reply[3] = volsync;
2153 call->expected_version = 1; /* vnode->status.data_version */
2155 /* marshall the parameters */
2157 bp[0] = htonl(FSFETCHSTATUS);
2158 bp[1] = htonl(fid->vid);
2159 bp[2] = htonl(fid->vnode);
2160 bp[3] = htonl(fid->unique);
2162 call->cb_break = fc->cb_break;
2163 afs_use_fs_server(call, fc->cbi);
2164 trace_afs_make_fs_call(call, fid);
2165 return afs_make_call(&fc->ac, call, GFP_NOFS, false);
2169 * Deliver reply data to an FS.InlineBulkStatus call
2171 static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
2173 struct afs_file_status *statuses;
2174 struct afs_callback *callbacks;
2175 struct afs_vnode *vnode = call->reply[0];
2180 _enter("{%u}", call->unmarshall);
2182 switch (call->unmarshall) {
2187 /* Extract the file status count and array in two steps */
2189 _debug("extract status count");
2190 ret = afs_extract_data(call, &call->tmp, 4, true);
2194 tmp = ntohl(call->tmp);
2195 _debug("status count: %u/%u", tmp, call->count2);
2196 if (tmp != call->count2)
2197 return afs_protocol_error(call, -EBADMSG);
2205 _debug("extract status array %u", call->count);
2206 ret = afs_extract_data(call, call->buffer, 21 * 4, true);
2211 statuses = call->reply[1];
2212 if (xdr_decode_AFSFetchStatus(call, &bp, &statuses[call->count],
2213 call->count == 0 ? vnode : NULL,
2215 return afs_protocol_error(call, -EBADMSG);
2218 if (call->count < call->count2)
2225 /* Extract the callback count and array in two steps */
2227 _debug("extract CB count");
2228 ret = afs_extract_data(call, &call->tmp, 4, true);
2232 tmp = ntohl(call->tmp);
2233 _debug("CB count: %u", tmp);
2234 if (tmp != call->count2)
2235 return afs_protocol_error(call, -EBADMSG);
2242 _debug("extract CB array");
2243 ret = afs_extract_data(call, call->buffer, 3 * 4, true);
2247 _debug("unmarshall CB array");
2249 callbacks = call->reply[2];
2250 callbacks[call->count].version = ntohl(bp[0]);
2251 callbacks[call->count].expiry = ntohl(bp[1]);
2252 callbacks[call->count].type = ntohl(bp[2]);
2253 statuses = call->reply[1];
2254 if (call->count == 0 && vnode && statuses[0].abort_code == 0)
2255 xdr_decode_AFSCallBack(call, vnode, &bp);
2257 if (call->count < call->count2)
2264 ret = afs_extract_data(call, call->buffer, 6 * 4, false);
2270 xdr_decode_AFSVolSync(&bp, call->reply[3]);
2279 _leave(" = 0 [done]");
2284 * FS.InlineBulkStatus operation type
2286 static const struct afs_call_type afs_RXFSInlineBulkStatus = {
2287 .name = "FS.InlineBulkStatus",
2288 .op = afs_FS_InlineBulkStatus,
2289 .deliver = afs_deliver_fs_inline_bulk_status,
2290 .destructor = afs_flat_call_destructor,
2294 * Fetch the status information for up to 50 files
2296 int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
2297 struct afs_net *net,
2298 struct afs_fid *fids,
2299 struct afs_file_status *statuses,
2300 struct afs_callback *callbacks,
2301 unsigned int nr_fids,
2302 struct afs_volsync *volsync)
2304 struct afs_call *call;
2308 _enter(",%x,{%x:%u},%u",
2309 key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
2311 call = afs_alloc_flat_call(net, &afs_RXFSInlineBulkStatus,
2312 (2 + nr_fids * 3) * 4,
2315 fc->ac.error = -ENOMEM;
2319 call->key = fc->key;
2320 call->reply[0] = NULL; /* vnode for fid[0] */
2321 call->reply[1] = statuses;
2322 call->reply[2] = callbacks;
2323 call->reply[3] = volsync;
2324 call->count2 = nr_fids;
2326 /* marshall the parameters */
2328 *bp++ = htonl(FSINLINEBULKSTATUS);
2329 *bp++ = htonl(nr_fids);
2330 for (i = 0; i < nr_fids; i++) {
2331 *bp++ = htonl(fids[i].vid);
2332 *bp++ = htonl(fids[i].vnode);
2333 *bp++ = htonl(fids[i].unique);
2336 call->cb_break = fc->cb_break;
2337 afs_use_fs_server(call, fc->cbi);
2338 trace_afs_make_fs_call(call, &fids[0]);
2339 return afs_make_call(&fc->ac, call, GFP_NOFS, false);