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>
20 #include "protocol_yfs.h"
22 static const struct afs_fid afs_zero_fid;
24 static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
26 call->cbi = afs_get_cb_interest(cbi);
30 * decode an AFSFid block
32 static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
34 const __be32 *bp = *_bp;
36 fid->vid = ntohl(*bp++);
37 fid->vnode = ntohl(*bp++);
38 fid->unique = ntohl(*bp++);
43 * Dump a bad file status record.
45 static void xdr_dump_bad(const __be32 *bp)
50 pr_notice("AFS XDR: Bad status record\n");
51 for (i = 0; i < 5 * 4 * 4; i += 16) {
54 pr_notice("%03x: %08x %08x %08x %08x\n",
55 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
59 pr_notice("0x50: %08x\n", ntohl(x[0]));
63 * decode an AFSFetchStatus block
65 static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
66 struct afs_call *call,
67 struct afs_status_cb *scb)
69 const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
70 struct afs_file_status *status = &scb->status;
71 bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
72 u64 data_version, size;
75 abort_code = ntohl(xdr->abort_code);
77 if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
78 if (xdr->if_version == htonl(0) &&
81 /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
82 * whereby it doesn't set the interface version in the error
85 status->abort_code = abort_code;
86 scb->have_error = true;
90 pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
94 if (abort_code != 0 && inline_error) {
95 status->abort_code = abort_code;
99 type = ntohl(xdr->type);
103 case AFS_FTYPE_SYMLINK:
110 status->nlink = ntohl(xdr->nlink);
111 status->author = ntohl(xdr->author);
112 status->owner = ntohl(xdr->owner);
113 status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
114 status->anon_access = ntohl(xdr->anon_access);
115 status->mode = ntohl(xdr->mode) & S_IALLUGO;
116 status->group = ntohl(xdr->group);
117 status->lock_count = ntohl(xdr->lock_count);
119 status->mtime_client.tv_sec = ntohl(xdr->mtime_client);
120 status->mtime_client.tv_nsec = 0;
121 status->mtime_server.tv_sec = ntohl(xdr->mtime_server);
122 status->mtime_server.tv_nsec = 0;
124 size = (u64)ntohl(xdr->size_lo);
125 size |= (u64)ntohl(xdr->size_hi) << 32;
128 data_version = (u64)ntohl(xdr->data_version_lo);
129 data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
130 status->data_version = data_version;
131 scb->have_status = true;
133 *_bp = (const void *)*_bp + sizeof(*xdr);
138 return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
141 static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry)
143 return ktime_divns(call->reply_time, NSEC_PER_SEC) + expiry;
146 static void xdr_decode_AFSCallBack(const __be32 **_bp,
147 struct afs_call *call,
148 struct afs_status_cb *scb)
150 struct afs_callback *cb = &scb->callback;
151 const __be32 *bp = *_bp;
154 cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++));
161 * decode an AFSVolSync block
163 static void xdr_decode_AFSVolSync(const __be32 **_bp,
164 struct afs_volsync *volsync)
166 const __be32 *bp = *_bp;
169 creation = ntohl(*bp++);
178 volsync->creation = creation;
182 * encode the requested attributes into an AFSStoreStatus block
184 static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
187 u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0;
190 if (attr->ia_valid & ATTR_MTIME) {
191 mask |= AFS_SET_MTIME;
192 mtime = attr->ia_mtime.tv_sec;
195 if (attr->ia_valid & ATTR_UID) {
196 mask |= AFS_SET_OWNER;
197 owner = from_kuid(&init_user_ns, attr->ia_uid);
200 if (attr->ia_valid & ATTR_GID) {
201 mask |= AFS_SET_GROUP;
202 group = from_kgid(&init_user_ns, attr->ia_gid);
205 if (attr->ia_valid & ATTR_MODE) {
206 mask |= AFS_SET_MODE;
207 mode = attr->ia_mode & S_IALLUGO;
211 *bp++ = htonl(mtime);
212 *bp++ = htonl(owner);
213 *bp++ = htonl(group);
215 *bp++ = 0; /* segment size */
220 * decode an AFSFetchVolumeStatus block
222 static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
223 struct afs_volume_status *vs)
225 const __be32 *bp = *_bp;
227 vs->vid = ntohl(*bp++);
228 vs->parent_id = ntohl(*bp++);
229 vs->online = ntohl(*bp++);
230 vs->in_service = ntohl(*bp++);
231 vs->blessed = ntohl(*bp++);
232 vs->needs_salvage = ntohl(*bp++);
233 vs->type = ntohl(*bp++);
234 vs->min_quota = ntohl(*bp++);
235 vs->max_quota = ntohl(*bp++);
236 vs->blocks_in_use = ntohl(*bp++);
237 vs->part_blocks_avail = ntohl(*bp++);
238 vs->part_max_blocks = ntohl(*bp++);
239 vs->vol_copy_date = 0;
240 vs->vol_backup_date = 0;
245 * deliver reply data to an FS.FetchStatus
247 static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
252 ret = afs_transfer_reply(call);
256 /* unmarshall the reply once we've received all of it */
258 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
261 xdr_decode_AFSCallBack(&bp, call, call->out_scb);
262 xdr_decode_AFSVolSync(&bp, call->out_volsync);
264 _leave(" = 0 [done]");
269 * FS.FetchStatus operation type
271 static const struct afs_call_type afs_RXFSFetchStatus_vnode = {
272 .name = "FS.FetchStatus(vnode)",
273 .op = afs_FS_FetchStatus,
274 .deliver = afs_deliver_fs_fetch_status_vnode,
275 .destructor = afs_flat_call_destructor,
279 * fetch the status information for a file
281 int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
282 struct afs_volsync *volsync)
284 struct afs_vnode *vnode = fc->vnode;
285 struct afs_call *call;
286 struct afs_net *net = afs_v2net(vnode);
289 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
290 return yfs_fs_fetch_file_status(fc, scb, volsync);
292 _enter(",%x,{%llx:%llu},,",
293 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
295 call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus_vnode,
296 16, (21 + 3 + 6) * 4);
298 fc->ac.error = -ENOMEM;
304 call->out_volsync = volsync;
306 /* marshall the parameters */
308 bp[0] = htonl(FSFETCHSTATUS);
309 bp[1] = htonl(vnode->fid.vid);
310 bp[2] = htonl(vnode->fid.vnode);
311 bp[3] = htonl(vnode->fid.unique);
313 afs_use_fs_server(call, fc->cbi);
314 trace_afs_make_fs_call(call, &vnode->fid);
316 afs_set_fc_call(call, fc);
317 afs_make_call(&fc->ac, call, GFP_NOFS);
318 return afs_wait_for_call_to_complete(call, &fc->ac);
322 * deliver reply data to an FS.FetchData
324 static int afs_deliver_fs_fetch_data(struct afs_call *call)
326 struct afs_read *req = call->read_request;
331 _enter("{%u,%zu/%llu}",
332 call->unmarshall, iov_iter_count(&call->iter), req->actual_len);
334 switch (call->unmarshall) {
338 req->offset = req->pos & (PAGE_SIZE - 1);
340 if (call->operation_ID == FSFETCHDATA64) {
341 afs_extract_to_tmp64(call);
343 call->tmp_u = htonl(0);
344 afs_extract_to_tmp(call);
347 /* Fall through - and extract the returned data length */
349 _debug("extract data length");
350 ret = afs_extract_data(call, true);
354 req->actual_len = be64_to_cpu(call->tmp64);
355 _debug("DATA length: %llu", req->actual_len);
356 req->remain = min(req->len, req->actual_len);
357 if (req->remain == 0)
363 ASSERTCMP(req->index, <, req->nr_pages);
364 if (req->remain > PAGE_SIZE - req->offset)
365 size = PAGE_SIZE - req->offset;
368 call->bvec[0].bv_len = size;
369 call->bvec[0].bv_offset = req->offset;
370 call->bvec[0].bv_page = req->pages[req->index];
371 iov_iter_bvec(&call->iter, READ, call->bvec, 1, size);
372 ASSERTCMP(size, <=, PAGE_SIZE);
374 /* Fall through - and extract the returned data */
376 _debug("extract data %zu/%llu",
377 iov_iter_count(&call->iter), req->remain);
379 ret = afs_extract_data(call, true);
382 req->remain -= call->bvec[0].bv_len;
383 req->offset += call->bvec[0].bv_len;
384 ASSERTCMP(req->offset, <=, PAGE_SIZE);
385 if (req->offset == PAGE_SIZE) {
394 ASSERTCMP(req->remain, ==, 0);
395 if (req->actual_len <= req->len)
398 /* Discard any excess data the server gave us */
399 iov_iter_discard(&call->iter, READ, req->actual_len - req->len);
400 call->unmarshall = 3;
404 _debug("extract discard %zu/%llu",
405 iov_iter_count(&call->iter), req->actual_len - req->len);
407 ret = afs_extract_data(call, true);
412 call->unmarshall = 4;
413 afs_extract_to_buf(call, (21 + 3 + 6) * 4);
415 /* Fall through - and extract the metadata */
417 ret = afs_extract_data(call, false);
422 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
425 xdr_decode_AFSCallBack(&bp, call, call->out_scb);
426 xdr_decode_AFSVolSync(&bp, call->out_volsync);
428 req->data_version = call->out_scb->status.data_version;
429 req->file_size = call->out_scb->status.size;
437 for (; req->index < req->nr_pages; req->index++) {
438 if (req->offset < PAGE_SIZE)
439 zero_user_segment(req->pages[req->index],
440 req->offset, PAGE_SIZE);
446 _leave(" = 0 [done]");
450 static void afs_fetch_data_destructor(struct afs_call *call)
452 struct afs_read *req = call->read_request;
455 afs_flat_call_destructor(call);
459 * FS.FetchData operation type
461 static const struct afs_call_type afs_RXFSFetchData = {
462 .name = "FS.FetchData",
463 .op = afs_FS_FetchData,
464 .deliver = afs_deliver_fs_fetch_data,
465 .destructor = afs_fetch_data_destructor,
468 static const struct afs_call_type afs_RXFSFetchData64 = {
469 .name = "FS.FetchData64",
470 .op = afs_FS_FetchData64,
471 .deliver = afs_deliver_fs_fetch_data,
472 .destructor = afs_fetch_data_destructor,
476 * fetch data from a very large file
478 static int afs_fs_fetch_data64(struct afs_fs_cursor *fc,
479 struct afs_status_cb *scb,
480 struct afs_read *req)
482 struct afs_vnode *vnode = fc->vnode;
483 struct afs_call *call;
484 struct afs_net *net = afs_v2net(vnode);
489 call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
495 call->out_volsync = NULL;
496 call->read_request = req;
498 /* marshall the parameters */
500 bp[0] = htonl(FSFETCHDATA64);
501 bp[1] = htonl(vnode->fid.vid);
502 bp[2] = htonl(vnode->fid.vnode);
503 bp[3] = htonl(vnode->fid.unique);
504 bp[4] = htonl(upper_32_bits(req->pos));
505 bp[5] = htonl(lower_32_bits(req->pos));
507 bp[7] = htonl(lower_32_bits(req->len));
509 refcount_inc(&req->usage);
510 afs_use_fs_server(call, fc->cbi);
511 trace_afs_make_fs_call(call, &vnode->fid);
512 afs_set_fc_call(call, fc);
513 afs_make_call(&fc->ac, call, GFP_NOFS);
514 return afs_wait_for_call_to_complete(call, &fc->ac);
518 * fetch data from a file
520 int afs_fs_fetch_data(struct afs_fs_cursor *fc,
521 struct afs_status_cb *scb,
522 struct afs_read *req)
524 struct afs_vnode *vnode = fc->vnode;
525 struct afs_call *call;
526 struct afs_net *net = afs_v2net(vnode);
529 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
530 return yfs_fs_fetch_data(fc, scb, req);
532 if (upper_32_bits(req->pos) ||
533 upper_32_bits(req->len) ||
534 upper_32_bits(req->pos + req->len))
535 return afs_fs_fetch_data64(fc, scb, req);
539 call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
545 call->out_volsync = NULL;
546 call->read_request = req;
548 /* marshall the parameters */
550 bp[0] = htonl(FSFETCHDATA);
551 bp[1] = htonl(vnode->fid.vid);
552 bp[2] = htonl(vnode->fid.vnode);
553 bp[3] = htonl(vnode->fid.unique);
554 bp[4] = htonl(lower_32_bits(req->pos));
555 bp[5] = htonl(lower_32_bits(req->len));
557 refcount_inc(&req->usage);
558 afs_use_fs_server(call, fc->cbi);
559 trace_afs_make_fs_call(call, &vnode->fid);
560 afs_set_fc_call(call, fc);
561 afs_make_call(&fc->ac, call, GFP_NOFS);
562 return afs_wait_for_call_to_complete(call, &fc->ac);
566 * deliver reply data to an FS.CreateFile or an FS.MakeDir
568 static int afs_deliver_fs_create_vnode(struct afs_call *call)
573 ret = afs_transfer_reply(call);
577 /* unmarshall the reply once we've received all of it */
579 xdr_decode_AFSFid(&bp, call->out_fid);
580 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
583 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
586 xdr_decode_AFSCallBack(&bp, call, call->out_scb);
587 xdr_decode_AFSVolSync(&bp, call->out_volsync);
589 _leave(" = 0 [done]");
594 * FS.CreateFile and FS.MakeDir operation type
596 static const struct afs_call_type afs_RXFSCreateFile = {
597 .name = "FS.CreateFile",
598 .op = afs_FS_CreateFile,
599 .deliver = afs_deliver_fs_create_vnode,
600 .destructor = afs_flat_call_destructor,
603 static const struct afs_call_type afs_RXFSMakeDir = {
604 .name = "FS.MakeDir",
605 .op = afs_FS_MakeDir,
606 .deliver = afs_deliver_fs_create_vnode,
607 .destructor = afs_flat_call_destructor,
611 * create a file or make a directory
613 int afs_fs_create(struct afs_fs_cursor *fc,
616 struct afs_status_cb *dvnode_scb,
617 struct afs_fid *newfid,
618 struct afs_status_cb *new_scb)
620 struct afs_vnode *dvnode = fc->vnode;
621 struct afs_call *call;
622 struct afs_net *net = afs_v2net(dvnode);
623 size_t namesz, reqsz, padsz;
626 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)){
628 return yfs_fs_make_dir(fc, name, mode, dvnode_scb,
631 return yfs_fs_create_file(fc, name, mode, dvnode_scb,
637 namesz = strlen(name);
638 padsz = (4 - (namesz & 3)) & 3;
639 reqsz = (5 * 4) + namesz + padsz + (6 * 4);
641 call = afs_alloc_flat_call(
642 net, S_ISDIR(mode) ? &afs_RXFSMakeDir : &afs_RXFSCreateFile,
643 reqsz, (3 + 21 + 21 + 3 + 6) * 4);
648 call->out_dir_scb = dvnode_scb;
649 call->out_fid = newfid;
650 call->out_scb = new_scb;
652 /* marshall the parameters */
654 *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE);
655 *bp++ = htonl(dvnode->fid.vid);
656 *bp++ = htonl(dvnode->fid.vnode);
657 *bp++ = htonl(dvnode->fid.unique);
658 *bp++ = htonl(namesz);
659 memcpy(bp, name, namesz);
660 bp = (void *) bp + namesz;
662 memset(bp, 0, padsz);
663 bp = (void *) bp + padsz;
665 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
666 *bp++ = htonl(dvnode->vfs_inode.i_mtime.tv_sec); /* mtime */
667 *bp++ = 0; /* owner */
668 *bp++ = 0; /* group */
669 *bp++ = htonl(mode & S_IALLUGO); /* unix mode */
670 *bp++ = 0; /* segment size */
672 afs_use_fs_server(call, fc->cbi);
673 trace_afs_make_fs_call1(call, &dvnode->fid, name);
674 afs_set_fc_call(call, fc);
675 afs_make_call(&fc->ac, call, GFP_NOFS);
676 return afs_wait_for_call_to_complete(call, &fc->ac);
680 * Deliver reply data to any operation that returns directory status and volume
683 static int afs_deliver_fs_dir_status_and_vol(struct afs_call *call)
688 ret = afs_transfer_reply(call);
692 /* unmarshall the reply once we've received all of it */
694 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
697 xdr_decode_AFSVolSync(&bp, call->out_volsync);
699 _leave(" = 0 [done]");
704 * FS.RemoveDir/FS.RemoveFile operation type
706 static const struct afs_call_type afs_RXFSRemoveFile = {
707 .name = "FS.RemoveFile",
708 .op = afs_FS_RemoveFile,
709 .deliver = afs_deliver_fs_dir_status_and_vol,
710 .destructor = afs_flat_call_destructor,
713 static const struct afs_call_type afs_RXFSRemoveDir = {
714 .name = "FS.RemoveDir",
715 .op = afs_FS_RemoveDir,
716 .deliver = afs_deliver_fs_dir_status_and_vol,
717 .destructor = afs_flat_call_destructor,
721 * remove a file or directory
723 int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
724 const char *name, bool isdir, struct afs_status_cb *dvnode_scb)
726 struct afs_vnode *dvnode = fc->vnode;
727 struct afs_call *call;
728 struct afs_net *net = afs_v2net(dvnode);
729 size_t namesz, reqsz, padsz;
732 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
733 return yfs_fs_remove(fc, vnode, name, isdir, dvnode_scb);
737 namesz = strlen(name);
738 padsz = (4 - (namesz & 3)) & 3;
739 reqsz = (5 * 4) + namesz + padsz;
741 call = afs_alloc_flat_call(
742 net, isdir ? &afs_RXFSRemoveDir : &afs_RXFSRemoveFile,
743 reqsz, (21 + 6) * 4);
748 call->out_dir_scb = dvnode_scb;
750 /* marshall the parameters */
752 *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE);
753 *bp++ = htonl(dvnode->fid.vid);
754 *bp++ = htonl(dvnode->fid.vnode);
755 *bp++ = htonl(dvnode->fid.unique);
756 *bp++ = htonl(namesz);
757 memcpy(bp, name, namesz);
758 bp = (void *) bp + namesz;
760 memset(bp, 0, padsz);
761 bp = (void *) bp + padsz;
764 afs_use_fs_server(call, fc->cbi);
765 trace_afs_make_fs_call1(call, &dvnode->fid, name);
766 afs_set_fc_call(call, fc);
767 afs_make_call(&fc->ac, call, GFP_NOFS);
768 return afs_wait_for_call_to_complete(call, &fc->ac);
772 * deliver reply data to an FS.Link
774 static int afs_deliver_fs_link(struct afs_call *call)
779 _enter("{%u}", call->unmarshall);
781 ret = afs_transfer_reply(call);
785 /* unmarshall the reply once we've received all of it */
787 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
790 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
793 xdr_decode_AFSVolSync(&bp, call->out_volsync);
795 _leave(" = 0 [done]");
800 * FS.Link operation type
802 static const struct afs_call_type afs_RXFSLink = {
805 .deliver = afs_deliver_fs_link,
806 .destructor = afs_flat_call_destructor,
812 int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
814 struct afs_status_cb *dvnode_scb,
815 struct afs_status_cb *vnode_scb)
817 struct afs_vnode *dvnode = fc->vnode;
818 struct afs_call *call;
819 struct afs_net *net = afs_v2net(vnode);
820 size_t namesz, reqsz, padsz;
823 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
824 return yfs_fs_link(fc, vnode, name, dvnode_scb, vnode_scb);
828 namesz = strlen(name);
829 padsz = (4 - (namesz & 3)) & 3;
830 reqsz = (5 * 4) + namesz + padsz + (3 * 4);
832 call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
837 call->out_dir_scb = dvnode_scb;
838 call->out_scb = vnode_scb;
840 /* marshall the parameters */
842 *bp++ = htonl(FSLINK);
843 *bp++ = htonl(dvnode->fid.vid);
844 *bp++ = htonl(dvnode->fid.vnode);
845 *bp++ = htonl(dvnode->fid.unique);
846 *bp++ = htonl(namesz);
847 memcpy(bp, name, namesz);
848 bp = (void *) bp + namesz;
850 memset(bp, 0, padsz);
851 bp = (void *) bp + padsz;
853 *bp++ = htonl(vnode->fid.vid);
854 *bp++ = htonl(vnode->fid.vnode);
855 *bp++ = htonl(vnode->fid.unique);
857 afs_use_fs_server(call, fc->cbi);
858 trace_afs_make_fs_call1(call, &vnode->fid, name);
859 afs_set_fc_call(call, fc);
860 afs_make_call(&fc->ac, call, GFP_NOFS);
861 return afs_wait_for_call_to_complete(call, &fc->ac);
865 * deliver reply data to an FS.Symlink
867 static int afs_deliver_fs_symlink(struct afs_call *call)
872 _enter("{%u}", call->unmarshall);
874 ret = afs_transfer_reply(call);
878 /* unmarshall the reply once we've received all of it */
880 xdr_decode_AFSFid(&bp, call->out_fid);
881 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
884 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
887 xdr_decode_AFSVolSync(&bp, call->out_volsync);
889 _leave(" = 0 [done]");
894 * FS.Symlink operation type
896 static const struct afs_call_type afs_RXFSSymlink = {
897 .name = "FS.Symlink",
898 .op = afs_FS_Symlink,
899 .deliver = afs_deliver_fs_symlink,
900 .destructor = afs_flat_call_destructor,
904 * create a symbolic link
906 int afs_fs_symlink(struct afs_fs_cursor *fc,
908 const char *contents,
909 struct afs_status_cb *dvnode_scb,
910 struct afs_fid *newfid,
911 struct afs_status_cb *new_scb)
913 struct afs_vnode *dvnode = fc->vnode;
914 struct afs_call *call;
915 struct afs_net *net = afs_v2net(dvnode);
916 size_t namesz, reqsz, padsz, c_namesz, c_padsz;
919 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
920 return yfs_fs_symlink(fc, name, contents, dvnode_scb,
925 namesz = strlen(name);
926 padsz = (4 - (namesz & 3)) & 3;
928 c_namesz = strlen(contents);
929 c_padsz = (4 - (c_namesz & 3)) & 3;
931 reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
933 call = afs_alloc_flat_call(net, &afs_RXFSSymlink, reqsz,
934 (3 + 21 + 21 + 6) * 4);
939 call->out_dir_scb = dvnode_scb;
940 call->out_fid = newfid;
941 call->out_scb = new_scb;
943 /* marshall the parameters */
945 *bp++ = htonl(FSSYMLINK);
946 *bp++ = htonl(dvnode->fid.vid);
947 *bp++ = htonl(dvnode->fid.vnode);
948 *bp++ = htonl(dvnode->fid.unique);
949 *bp++ = htonl(namesz);
950 memcpy(bp, name, namesz);
951 bp = (void *) bp + namesz;
953 memset(bp, 0, padsz);
954 bp = (void *) bp + padsz;
956 *bp++ = htonl(c_namesz);
957 memcpy(bp, contents, c_namesz);
958 bp = (void *) bp + c_namesz;
960 memset(bp, 0, c_padsz);
961 bp = (void *) bp + c_padsz;
963 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
964 *bp++ = htonl(dvnode->vfs_inode.i_mtime.tv_sec); /* mtime */
965 *bp++ = 0; /* owner */
966 *bp++ = 0; /* group */
967 *bp++ = htonl(S_IRWXUGO); /* unix mode */
968 *bp++ = 0; /* segment size */
970 afs_use_fs_server(call, fc->cbi);
971 trace_afs_make_fs_call1(call, &dvnode->fid, name);
972 afs_set_fc_call(call, fc);
973 afs_make_call(&fc->ac, call, GFP_NOFS);
974 return afs_wait_for_call_to_complete(call, &fc->ac);
978 * deliver reply data to an FS.Rename
980 static int afs_deliver_fs_rename(struct afs_call *call)
985 ret = afs_transfer_reply(call);
989 /* unmarshall the reply once we've received all of it */
991 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
994 if (call->out_dir_scb != call->out_scb) {
995 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
999 xdr_decode_AFSVolSync(&bp, call->out_volsync);
1001 _leave(" = 0 [done]");
1006 * FS.Rename operation type
1008 static const struct afs_call_type afs_RXFSRename = {
1009 .name = "FS.Rename",
1010 .op = afs_FS_Rename,
1011 .deliver = afs_deliver_fs_rename,
1012 .destructor = afs_flat_call_destructor,
1016 * Rename/move a file or directory.
1018 int afs_fs_rename(struct afs_fs_cursor *fc,
1019 const char *orig_name,
1020 struct afs_vnode *new_dvnode,
1021 const char *new_name,
1022 struct afs_status_cb *orig_dvnode_scb,
1023 struct afs_status_cb *new_dvnode_scb)
1025 struct afs_vnode *orig_dvnode = fc->vnode;
1026 struct afs_call *call;
1027 struct afs_net *net = afs_v2net(orig_dvnode);
1028 size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
1031 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
1032 return yfs_fs_rename(fc, orig_name,
1033 new_dvnode, new_name,
1039 o_namesz = strlen(orig_name);
1040 o_padsz = (4 - (o_namesz & 3)) & 3;
1042 n_namesz = strlen(new_name);
1043 n_padsz = (4 - (n_namesz & 3)) & 3;
1046 4 + o_namesz + o_padsz +
1048 4 + n_namesz + n_padsz;
1050 call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
1054 call->key = fc->key;
1055 call->out_dir_scb = orig_dvnode_scb;
1056 call->out_scb = new_dvnode_scb;
1058 /* marshall the parameters */
1060 *bp++ = htonl(FSRENAME);
1061 *bp++ = htonl(orig_dvnode->fid.vid);
1062 *bp++ = htonl(orig_dvnode->fid.vnode);
1063 *bp++ = htonl(orig_dvnode->fid.unique);
1064 *bp++ = htonl(o_namesz);
1065 memcpy(bp, orig_name, o_namesz);
1066 bp = (void *) bp + o_namesz;
1068 memset(bp, 0, o_padsz);
1069 bp = (void *) bp + o_padsz;
1072 *bp++ = htonl(new_dvnode->fid.vid);
1073 *bp++ = htonl(new_dvnode->fid.vnode);
1074 *bp++ = htonl(new_dvnode->fid.unique);
1075 *bp++ = htonl(n_namesz);
1076 memcpy(bp, new_name, n_namesz);
1077 bp = (void *) bp + n_namesz;
1079 memset(bp, 0, n_padsz);
1080 bp = (void *) bp + n_padsz;
1083 afs_use_fs_server(call, fc->cbi);
1084 trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name);
1085 afs_set_fc_call(call, fc);
1086 afs_make_call(&fc->ac, call, GFP_NOFS);
1087 return afs_wait_for_call_to_complete(call, &fc->ac);
1091 * deliver reply data to an FS.StoreData
1093 static int afs_deliver_fs_store_data(struct afs_call *call)
1100 ret = afs_transfer_reply(call);
1104 /* unmarshall the reply once we've received all of it */
1106 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
1109 xdr_decode_AFSVolSync(&bp, call->out_volsync);
1111 _leave(" = 0 [done]");
1116 * FS.StoreData operation type
1118 static const struct afs_call_type afs_RXFSStoreData = {
1119 .name = "FS.StoreData",
1120 .op = afs_FS_StoreData,
1121 .deliver = afs_deliver_fs_store_data,
1122 .destructor = afs_flat_call_destructor,
1125 static const struct afs_call_type afs_RXFSStoreData64 = {
1126 .name = "FS.StoreData64",
1127 .op = afs_FS_StoreData64,
1128 .deliver = afs_deliver_fs_store_data,
1129 .destructor = afs_flat_call_destructor,
1133 * store a set of pages to a very large file
1135 static int afs_fs_store_data64(struct afs_fs_cursor *fc,
1136 struct address_space *mapping,
1137 pgoff_t first, pgoff_t last,
1138 unsigned offset, unsigned to,
1139 loff_t size, loff_t pos, loff_t i_size,
1140 struct afs_status_cb *scb)
1142 struct afs_vnode *vnode = fc->vnode;
1143 struct afs_call *call;
1144 struct afs_net *net = afs_v2net(vnode);
1147 _enter(",%x,{%llx:%llu},,",
1148 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1150 call = afs_alloc_flat_call(net, &afs_RXFSStoreData64,
1151 (4 + 6 + 3 * 2) * 4,
1156 call->key = fc->key;
1157 call->mapping = mapping;
1158 call->first = first;
1160 call->first_offset = offset;
1162 call->send_pages = true;
1163 call->out_scb = scb;
1165 /* marshall the parameters */
1167 *bp++ = htonl(FSSTOREDATA64);
1168 *bp++ = htonl(vnode->fid.vid);
1169 *bp++ = htonl(vnode->fid.vnode);
1170 *bp++ = htonl(vnode->fid.unique);
1172 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1173 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
1174 *bp++ = 0; /* owner */
1175 *bp++ = 0; /* group */
1176 *bp++ = 0; /* unix mode */
1177 *bp++ = 0; /* segment size */
1179 *bp++ = htonl(pos >> 32);
1180 *bp++ = htonl((u32) pos);
1181 *bp++ = htonl(size >> 32);
1182 *bp++ = htonl((u32) size);
1183 *bp++ = htonl(i_size >> 32);
1184 *bp++ = htonl((u32) i_size);
1186 trace_afs_make_fs_call(call, &vnode->fid);
1187 afs_set_fc_call(call, fc);
1188 afs_make_call(&fc->ac, call, GFP_NOFS);
1189 return afs_wait_for_call_to_complete(call, &fc->ac);
1193 * store a set of pages
1195 int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
1196 pgoff_t first, pgoff_t last,
1197 unsigned offset, unsigned to,
1198 struct afs_status_cb *scb)
1200 struct afs_vnode *vnode = fc->vnode;
1201 struct afs_call *call;
1202 struct afs_net *net = afs_v2net(vnode);
1203 loff_t size, pos, i_size;
1206 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
1207 return yfs_fs_store_data(fc, mapping, first, last, offset, to, scb);
1209 _enter(",%x,{%llx:%llu},,",
1210 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1212 size = (loff_t)to - (loff_t)offset;
1214 size += (loff_t)(last - first) << PAGE_SHIFT;
1215 pos = (loff_t)first << PAGE_SHIFT;
1218 i_size = i_size_read(&vnode->vfs_inode);
1219 if (pos + size > i_size)
1220 i_size = size + pos;
1222 _debug("size %llx, at %llx, i_size %llx",
1223 (unsigned long long) size, (unsigned long long) pos,
1224 (unsigned long long) i_size);
1226 if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32)
1227 return afs_fs_store_data64(fc, mapping, first, last, offset, to,
1228 size, pos, i_size, scb);
1230 call = afs_alloc_flat_call(net, &afs_RXFSStoreData,
1236 call->key = fc->key;
1237 call->mapping = mapping;
1238 call->first = first;
1240 call->first_offset = offset;
1242 call->send_pages = true;
1243 call->out_scb = scb;
1245 /* marshall the parameters */
1247 *bp++ = htonl(FSSTOREDATA);
1248 *bp++ = htonl(vnode->fid.vid);
1249 *bp++ = htonl(vnode->fid.vnode);
1250 *bp++ = htonl(vnode->fid.unique);
1252 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1253 *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
1254 *bp++ = 0; /* owner */
1255 *bp++ = 0; /* group */
1256 *bp++ = 0; /* unix mode */
1257 *bp++ = 0; /* segment size */
1260 *bp++ = htonl(size);
1261 *bp++ = htonl(i_size);
1263 afs_use_fs_server(call, fc->cbi);
1264 trace_afs_make_fs_call(call, &vnode->fid);
1265 afs_set_fc_call(call, fc);
1266 afs_make_call(&fc->ac, call, GFP_NOFS);
1267 return afs_wait_for_call_to_complete(call, &fc->ac);
1271 * deliver reply data to an FS.StoreStatus
1273 static int afs_deliver_fs_store_status(struct afs_call *call)
1280 ret = afs_transfer_reply(call);
1284 /* unmarshall the reply once we've received all of it */
1286 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
1289 xdr_decode_AFSVolSync(&bp, call->out_volsync);
1291 _leave(" = 0 [done]");
1296 * FS.StoreStatus operation type
1298 static const struct afs_call_type afs_RXFSStoreStatus = {
1299 .name = "FS.StoreStatus",
1300 .op = afs_FS_StoreStatus,
1301 .deliver = afs_deliver_fs_store_status,
1302 .destructor = afs_flat_call_destructor,
1305 static const struct afs_call_type afs_RXFSStoreData_as_Status = {
1306 .name = "FS.StoreData",
1307 .op = afs_FS_StoreData,
1308 .deliver = afs_deliver_fs_store_status,
1309 .destructor = afs_flat_call_destructor,
1312 static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
1313 .name = "FS.StoreData64",
1314 .op = afs_FS_StoreData64,
1315 .deliver = afs_deliver_fs_store_status,
1316 .destructor = afs_flat_call_destructor,
1320 * set the attributes on a very large file, using FS.StoreData rather than
1321 * FS.StoreStatus so as to alter the file size also
1323 static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr,
1324 struct afs_status_cb *scb)
1326 struct afs_vnode *vnode = fc->vnode;
1327 struct afs_call *call;
1328 struct afs_net *net = afs_v2net(vnode);
1331 _enter(",%x,{%llx:%llu},,",
1332 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1334 ASSERT(attr->ia_valid & ATTR_SIZE);
1336 call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status,
1337 (4 + 6 + 3 * 2) * 4,
1342 call->key = fc->key;
1343 call->out_scb = scb;
1345 /* marshall the parameters */
1347 *bp++ = htonl(FSSTOREDATA64);
1348 *bp++ = htonl(vnode->fid.vid);
1349 *bp++ = htonl(vnode->fid.vnode);
1350 *bp++ = htonl(vnode->fid.unique);
1352 xdr_encode_AFS_StoreStatus(&bp, attr);
1354 *bp++ = htonl(attr->ia_size >> 32); /* position of start of write */
1355 *bp++ = htonl((u32) attr->ia_size);
1356 *bp++ = 0; /* size of write */
1358 *bp++ = htonl(attr->ia_size >> 32); /* new file length */
1359 *bp++ = htonl((u32) attr->ia_size);
1361 afs_use_fs_server(call, fc->cbi);
1362 trace_afs_make_fs_call(call, &vnode->fid);
1363 afs_set_fc_call(call, fc);
1364 afs_make_call(&fc->ac, call, GFP_NOFS);
1365 return afs_wait_for_call_to_complete(call, &fc->ac);
1369 * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
1370 * so as to alter the file size also
1372 static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr,
1373 struct afs_status_cb *scb)
1375 struct afs_vnode *vnode = fc->vnode;
1376 struct afs_call *call;
1377 struct afs_net *net = afs_v2net(vnode);
1380 _enter(",%x,{%llx:%llu},,",
1381 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1383 ASSERT(attr->ia_valid & ATTR_SIZE);
1384 if (attr->ia_size >> 32)
1385 return afs_fs_setattr_size64(fc, attr, scb);
1387 call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status,
1393 call->key = fc->key;
1394 call->out_scb = scb;
1396 /* marshall the parameters */
1398 *bp++ = htonl(FSSTOREDATA);
1399 *bp++ = htonl(vnode->fid.vid);
1400 *bp++ = htonl(vnode->fid.vnode);
1401 *bp++ = htonl(vnode->fid.unique);
1403 xdr_encode_AFS_StoreStatus(&bp, attr);
1405 *bp++ = htonl(attr->ia_size); /* position of start of write */
1406 *bp++ = 0; /* size of write */
1407 *bp++ = htonl(attr->ia_size); /* new file length */
1409 afs_use_fs_server(call, fc->cbi);
1410 trace_afs_make_fs_call(call, &vnode->fid);
1411 afs_set_fc_call(call, fc);
1412 afs_make_call(&fc->ac, call, GFP_NOFS);
1413 return afs_wait_for_call_to_complete(call, &fc->ac);
1417 * set the attributes on a file, using FS.StoreData if there's a change in file
1418 * size, and FS.StoreStatus otherwise
1420 int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr,
1421 struct afs_status_cb *scb)
1423 struct afs_vnode *vnode = fc->vnode;
1424 struct afs_call *call;
1425 struct afs_net *net = afs_v2net(vnode);
1428 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
1429 return yfs_fs_setattr(fc, attr, scb);
1431 if (attr->ia_valid & ATTR_SIZE)
1432 return afs_fs_setattr_size(fc, attr, scb);
1434 _enter(",%x,{%llx:%llu},,",
1435 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1437 call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus,
1443 call->key = fc->key;
1444 call->out_scb = scb;
1446 /* marshall the parameters */
1448 *bp++ = htonl(FSSTORESTATUS);
1449 *bp++ = htonl(vnode->fid.vid);
1450 *bp++ = htonl(vnode->fid.vnode);
1451 *bp++ = htonl(vnode->fid.unique);
1453 xdr_encode_AFS_StoreStatus(&bp, attr);
1455 afs_use_fs_server(call, fc->cbi);
1456 trace_afs_make_fs_call(call, &vnode->fid);
1457 afs_set_fc_call(call, fc);
1458 afs_make_call(&fc->ac, call, GFP_NOFS);
1459 return afs_wait_for_call_to_complete(call, &fc->ac);
1463 * deliver reply data to an FS.GetVolumeStatus
1465 static int afs_deliver_fs_get_volume_status(struct afs_call *call)
1472 _enter("{%u}", call->unmarshall);
1474 switch (call->unmarshall) {
1477 afs_extract_to_buf(call, 12 * 4);
1479 /* Fall through - and extract the returned status record */
1481 _debug("extract status");
1482 ret = afs_extract_data(call, true);
1487 xdr_decode_AFSFetchVolumeStatus(&bp, call->out_volstatus);
1489 afs_extract_to_tmp(call);
1491 /* Fall through - and extract the volume name length */
1493 ret = afs_extract_data(call, true);
1497 call->count = ntohl(call->tmp);
1498 _debug("volname length: %u", call->count);
1499 if (call->count >= AFSNAMEMAX)
1500 return afs_protocol_error(call, -EBADMSG,
1501 afs_eproto_volname_len);
1502 size = (call->count + 3) & ~3; /* It's padded */
1503 afs_extract_to_buf(call, size);
1506 /* Fall through - and extract the volume name */
1508 _debug("extract volname");
1509 ret = afs_extract_data(call, true);
1515 _debug("volname '%s'", p);
1516 afs_extract_to_tmp(call);
1519 /* Fall through - and extract the offline message length */
1521 ret = afs_extract_data(call, true);
1525 call->count = ntohl(call->tmp);
1526 _debug("offline msg length: %u", call->count);
1527 if (call->count >= AFSNAMEMAX)
1528 return afs_protocol_error(call, -EBADMSG,
1529 afs_eproto_offline_msg_len);
1530 size = (call->count + 3) & ~3; /* It's padded */
1531 afs_extract_to_buf(call, size);
1534 /* Fall through - and extract the offline message */
1536 _debug("extract offline");
1537 ret = afs_extract_data(call, true);
1543 _debug("offline '%s'", p);
1545 afs_extract_to_tmp(call);
1548 /* Fall through - and extract the message of the day length */
1550 ret = afs_extract_data(call, true);
1554 call->count = ntohl(call->tmp);
1555 _debug("motd length: %u", call->count);
1556 if (call->count >= AFSNAMEMAX)
1557 return afs_protocol_error(call, -EBADMSG,
1558 afs_eproto_motd_len);
1559 size = (call->count + 3) & ~3; /* It's padded */
1560 afs_extract_to_buf(call, size);
1563 /* Fall through - and extract the message of the day */
1565 _debug("extract motd");
1566 ret = afs_extract_data(call, false);
1572 _debug("motd '%s'", p);
1580 _leave(" = 0 [done]");
1585 * FS.GetVolumeStatus operation type
1587 static const struct afs_call_type afs_RXFSGetVolumeStatus = {
1588 .name = "FS.GetVolumeStatus",
1589 .op = afs_FS_GetVolumeStatus,
1590 .deliver = afs_deliver_fs_get_volume_status,
1591 .destructor = afs_flat_call_destructor,
1595 * fetch the status of a volume
1597 int afs_fs_get_volume_status(struct afs_fs_cursor *fc,
1598 struct afs_volume_status *vs)
1600 struct afs_vnode *vnode = fc->vnode;
1601 struct afs_call *call;
1602 struct afs_net *net = afs_v2net(vnode);
1605 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
1606 return yfs_fs_get_volume_status(fc, vs);
1610 call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4,
1611 max(12 * 4, AFSOPAQUEMAX + 1));
1615 call->key = fc->key;
1616 call->out_volstatus = vs;
1618 /* marshall the parameters */
1620 bp[0] = htonl(FSGETVOLUMESTATUS);
1621 bp[1] = htonl(vnode->fid.vid);
1623 afs_use_fs_server(call, fc->cbi);
1624 trace_afs_make_fs_call(call, &vnode->fid);
1625 afs_set_fc_call(call, fc);
1626 afs_make_call(&fc->ac, call, GFP_NOFS);
1627 return afs_wait_for_call_to_complete(call, &fc->ac);
1631 * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
1633 static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
1638 _enter("{%u}", call->unmarshall);
1640 ret = afs_transfer_reply(call);
1644 /* unmarshall the reply once we've received all of it */
1646 xdr_decode_AFSVolSync(&bp, call->out_volsync);
1648 _leave(" = 0 [done]");
1653 * FS.SetLock operation type
1655 static const struct afs_call_type afs_RXFSSetLock = {
1656 .name = "FS.SetLock",
1657 .op = afs_FS_SetLock,
1658 .deliver = afs_deliver_fs_xxxx_lock,
1659 .done = afs_lock_op_done,
1660 .destructor = afs_flat_call_destructor,
1664 * FS.ExtendLock operation type
1666 static const struct afs_call_type afs_RXFSExtendLock = {
1667 .name = "FS.ExtendLock",
1668 .op = afs_FS_ExtendLock,
1669 .deliver = afs_deliver_fs_xxxx_lock,
1670 .done = afs_lock_op_done,
1671 .destructor = afs_flat_call_destructor,
1675 * FS.ReleaseLock operation type
1677 static const struct afs_call_type afs_RXFSReleaseLock = {
1678 .name = "FS.ReleaseLock",
1679 .op = afs_FS_ReleaseLock,
1680 .deliver = afs_deliver_fs_xxxx_lock,
1681 .destructor = afs_flat_call_destructor,
1685 * Set a lock on a file
1687 int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type,
1688 struct afs_status_cb *scb)
1690 struct afs_vnode *vnode = fc->vnode;
1691 struct afs_call *call;
1692 struct afs_net *net = afs_v2net(vnode);
1695 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
1696 return yfs_fs_set_lock(fc, type, scb);
1700 call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
1704 call->key = fc->key;
1705 call->lvnode = vnode;
1706 call->out_scb = scb;
1708 /* marshall the parameters */
1710 *bp++ = htonl(FSSETLOCK);
1711 *bp++ = htonl(vnode->fid.vid);
1712 *bp++ = htonl(vnode->fid.vnode);
1713 *bp++ = htonl(vnode->fid.unique);
1714 *bp++ = htonl(type);
1716 afs_use_fs_server(call, fc->cbi);
1717 trace_afs_make_fs_calli(call, &vnode->fid, type);
1718 afs_set_fc_call(call, fc);
1719 afs_make_call(&fc->ac, call, GFP_NOFS);
1720 return afs_wait_for_call_to_complete(call, &fc->ac);
1724 * extend a lock on a file
1726 int afs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1728 struct afs_vnode *vnode = fc->vnode;
1729 struct afs_call *call;
1730 struct afs_net *net = afs_v2net(vnode);
1733 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
1734 return yfs_fs_extend_lock(fc, scb);
1738 call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
1742 call->key = fc->key;
1743 call->lvnode = vnode;
1744 call->out_scb = scb;
1746 /* marshall the parameters */
1748 *bp++ = htonl(FSEXTENDLOCK);
1749 *bp++ = htonl(vnode->fid.vid);
1750 *bp++ = htonl(vnode->fid.vnode);
1751 *bp++ = htonl(vnode->fid.unique);
1753 afs_use_fs_server(call, fc->cbi);
1754 trace_afs_make_fs_call(call, &vnode->fid);
1755 afs_set_fc_call(call, fc);
1756 afs_make_call(&fc->ac, call, GFP_NOFS);
1757 return afs_wait_for_call_to_complete(call, &fc->ac);
1761 * release a lock on a file
1763 int afs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1765 struct afs_vnode *vnode = fc->vnode;
1766 struct afs_call *call;
1767 struct afs_net *net = afs_v2net(vnode);
1770 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
1771 return yfs_fs_release_lock(fc, scb);
1775 call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
1779 call->key = fc->key;
1780 call->lvnode = vnode;
1781 call->out_scb = scb;
1783 /* marshall the parameters */
1785 *bp++ = htonl(FSRELEASELOCK);
1786 *bp++ = htonl(vnode->fid.vid);
1787 *bp++ = htonl(vnode->fid.vnode);
1788 *bp++ = htonl(vnode->fid.unique);
1790 afs_use_fs_server(call, fc->cbi);
1791 trace_afs_make_fs_call(call, &vnode->fid);
1792 afs_set_fc_call(call, fc);
1793 afs_make_call(&fc->ac, call, GFP_NOFS);
1794 return afs_wait_for_call_to_complete(call, &fc->ac);
1798 * Deliver reply data to an FS.GiveUpAllCallBacks operation.
1800 static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call)
1802 return afs_transfer_reply(call);
1806 * FS.GiveUpAllCallBacks operation type
1808 static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = {
1809 .name = "FS.GiveUpAllCallBacks",
1810 .op = afs_FS_GiveUpAllCallBacks,
1811 .deliver = afs_deliver_fs_give_up_all_callbacks,
1812 .destructor = afs_flat_call_destructor,
1816 * Flush all the callbacks we have on a server.
1818 int afs_fs_give_up_all_callbacks(struct afs_net *net,
1819 struct afs_server *server,
1820 struct afs_addr_cursor *ac,
1823 struct afs_call *call;
1828 call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0);
1834 /* marshall the parameters */
1836 *bp++ = htonl(FSGIVEUPALLCALLBACKS);
1838 /* Can't take a ref on server */
1839 afs_make_call(ac, call, GFP_NOFS);
1840 return afs_wait_for_call_to_complete(call, ac);
1844 * Deliver reply data to an FS.GetCapabilities operation.
1846 static int afs_deliver_fs_get_capabilities(struct afs_call *call)
1851 _enter("{%u,%zu}", call->unmarshall, iov_iter_count(&call->iter));
1853 switch (call->unmarshall) {
1855 afs_extract_to_tmp(call);
1858 /* Fall through - and extract the capabilities word count */
1860 ret = afs_extract_data(call, true);
1864 count = ntohl(call->tmp);
1866 call->count = count;
1867 call->count2 = count;
1868 iov_iter_discard(&call->iter, READ, count * sizeof(__be32));
1871 /* Fall through - and extract capabilities words */
1873 ret = afs_extract_data(call, false);
1877 /* TODO: Examine capabilities */
1883 _leave(" = 0 [done]");
1888 * FS.GetCapabilities operation type
1890 static const struct afs_call_type afs_RXFSGetCapabilities = {
1891 .name = "FS.GetCapabilities",
1892 .op = afs_FS_GetCapabilities,
1893 .deliver = afs_deliver_fs_get_capabilities,
1894 .done = afs_fileserver_probe_result,
1895 .destructor = afs_flat_call_destructor,
1899 * Probe a fileserver for the capabilities that it supports. This can
1900 * return up to 196 words.
1902 struct afs_call *afs_fs_get_capabilities(struct afs_net *net,
1903 struct afs_server *server,
1904 struct afs_addr_cursor *ac,
1906 unsigned int server_index)
1908 struct afs_call *call;
1913 call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
1915 return ERR_PTR(-ENOMEM);
1918 call->server = afs_get_server(server);
1919 call->server_index = server_index;
1920 call->upgrade = true;
1922 call->max_lifespan = AFS_PROBE_MAX_LIFESPAN;
1924 /* marshall the parameters */
1926 *bp++ = htonl(FSGETCAPABILITIES);
1928 /* Can't take a ref on server */
1929 trace_afs_make_fs_call(call, NULL);
1930 afs_make_call(ac, call, GFP_NOFS);
1935 * Deliver reply data to an FS.FetchStatus with no vnode.
1937 static int afs_deliver_fs_fetch_status(struct afs_call *call)
1942 ret = afs_transfer_reply(call);
1946 /* unmarshall the reply once we've received all of it */
1948 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
1951 xdr_decode_AFSCallBack(&bp, call, call->out_scb);
1952 xdr_decode_AFSVolSync(&bp, call->out_volsync);
1954 _leave(" = 0 [done]");
1959 * FS.FetchStatus operation type
1961 static const struct afs_call_type afs_RXFSFetchStatus = {
1962 .name = "FS.FetchStatus",
1963 .op = afs_FS_FetchStatus,
1964 .deliver = afs_deliver_fs_fetch_status,
1965 .destructor = afs_flat_call_destructor,
1969 * Fetch the status information for a fid without needing a vnode handle.
1971 int afs_fs_fetch_status(struct afs_fs_cursor *fc,
1972 struct afs_net *net,
1973 struct afs_fid *fid,
1974 struct afs_status_cb *scb,
1975 struct afs_volsync *volsync)
1977 struct afs_call *call;
1980 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
1981 return yfs_fs_fetch_status(fc, net, fid, scb, volsync);
1983 _enter(",%x,{%llx:%llu},,",
1984 key_serial(fc->key), fid->vid, fid->vnode);
1986 call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4);
1988 fc->ac.error = -ENOMEM;
1992 call->key = fc->key;
1993 call->out_fid = fid;
1994 call->out_scb = scb;
1995 call->out_volsync = volsync;
1997 /* marshall the parameters */
1999 bp[0] = htonl(FSFETCHSTATUS);
2000 bp[1] = htonl(fid->vid);
2001 bp[2] = htonl(fid->vnode);
2002 bp[3] = htonl(fid->unique);
2004 afs_use_fs_server(call, fc->cbi);
2005 trace_afs_make_fs_call(call, fid);
2006 afs_set_fc_call(call, fc);
2007 afs_make_call(&fc->ac, call, GFP_NOFS);
2008 return afs_wait_for_call_to_complete(call, &fc->ac);
2012 * Deliver reply data to an FS.InlineBulkStatus call
2014 static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
2016 struct afs_status_cb *scb;
2021 _enter("{%u}", call->unmarshall);
2023 switch (call->unmarshall) {
2025 afs_extract_to_tmp(call);
2028 /* Extract the file status count and array in two steps */
2031 _debug("extract status count");
2032 ret = afs_extract_data(call, true);
2036 tmp = ntohl(call->tmp);
2037 _debug("status count: %u/%u", tmp, call->count2);
2038 if (tmp != call->count2)
2039 return afs_protocol_error(call, -EBADMSG,
2040 afs_eproto_ibulkst_count);
2045 afs_extract_to_buf(call, 21 * sizeof(__be32));
2049 _debug("extract status array %u", call->count);
2050 ret = afs_extract_data(call, true);
2055 scb = &call->out_scb[call->count];
2056 ret = xdr_decode_AFSFetchStatus(&bp, call, scb);
2061 if (call->count < call->count2)
2066 afs_extract_to_tmp(call);
2068 /* Extract the callback count and array in two steps */
2071 _debug("extract CB count");
2072 ret = afs_extract_data(call, true);
2076 tmp = ntohl(call->tmp);
2077 _debug("CB count: %u", tmp);
2078 if (tmp != call->count2)
2079 return afs_protocol_error(call, -EBADMSG,
2080 afs_eproto_ibulkst_cb_count);
2084 afs_extract_to_buf(call, 3 * sizeof(__be32));
2088 _debug("extract CB array");
2089 ret = afs_extract_data(call, true);
2093 _debug("unmarshall CB array");
2095 scb = &call->out_scb[call->count];
2096 xdr_decode_AFSCallBack(&bp, call, scb);
2098 if (call->count < call->count2)
2101 afs_extract_to_buf(call, 6 * sizeof(__be32));
2106 ret = afs_extract_data(call, false);
2111 xdr_decode_AFSVolSync(&bp, call->out_volsync);
2119 _leave(" = 0 [done]");
2124 * FS.InlineBulkStatus operation type
2126 static const struct afs_call_type afs_RXFSInlineBulkStatus = {
2127 .name = "FS.InlineBulkStatus",
2128 .op = afs_FS_InlineBulkStatus,
2129 .deliver = afs_deliver_fs_inline_bulk_status,
2130 .destructor = afs_flat_call_destructor,
2134 * Fetch the status information for up to 50 files
2136 int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
2137 struct afs_net *net,
2138 struct afs_fid *fids,
2139 struct afs_status_cb *statuses,
2140 unsigned int nr_fids,
2141 struct afs_volsync *volsync)
2143 struct afs_call *call;
2147 if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
2148 return yfs_fs_inline_bulk_status(fc, net, fids, statuses,
2151 _enter(",%x,{%llx:%llu},%u",
2152 key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
2154 call = afs_alloc_flat_call(net, &afs_RXFSInlineBulkStatus,
2155 (2 + nr_fids * 3) * 4,
2158 fc->ac.error = -ENOMEM;
2162 call->key = fc->key;
2163 call->out_scb = statuses;
2164 call->out_volsync = volsync;
2165 call->count2 = nr_fids;
2167 /* marshall the parameters */
2169 *bp++ = htonl(FSINLINEBULKSTATUS);
2170 *bp++ = htonl(nr_fids);
2171 for (i = 0; i < nr_fids; i++) {
2172 *bp++ = htonl(fids[i].vid);
2173 *bp++ = htonl(fids[i].vnode);
2174 *bp++ = htonl(fids[i].unique);
2177 afs_use_fs_server(call, fc->cbi);
2178 trace_afs_make_fs_call(call, &fids[0]);
2179 afs_set_fc_call(call, fc);
2180 afs_make_call(&fc->ac, call, GFP_NOFS);
2181 return afs_wait_for_call_to_complete(call, &fc->ac);
2185 * deliver reply data to an FS.FetchACL
2187 static int afs_deliver_fs_fetch_acl(struct afs_call *call)
2189 struct afs_acl *acl;
2194 _enter("{%u}", call->unmarshall);
2196 switch (call->unmarshall) {
2198 afs_extract_to_tmp(call);
2201 /* extract the returned data length */
2203 ret = afs_extract_data(call, true);
2207 size = call->count2 = ntohl(call->tmp);
2208 size = round_up(size, 4);
2210 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2213 call->ret_acl = acl;
2214 acl->size = call->count2;
2215 afs_extract_begin(call, acl->data, size);
2218 /* extract the returned data */
2220 ret = afs_extract_data(call, true);
2224 afs_extract_to_buf(call, (21 + 6) * 4);
2227 /* extract the metadata */
2229 ret = afs_extract_data(call, false);
2234 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
2237 xdr_decode_AFSVolSync(&bp, call->out_volsync);
2245 _leave(" = 0 [done]");
2249 static void afs_destroy_fs_fetch_acl(struct afs_call *call)
2251 kfree(call->ret_acl);
2252 afs_flat_call_destructor(call);
2256 * FS.FetchACL operation type
2258 static const struct afs_call_type afs_RXFSFetchACL = {
2259 .name = "FS.FetchACL",
2260 .op = afs_FS_FetchACL,
2261 .deliver = afs_deliver_fs_fetch_acl,
2262 .destructor = afs_destroy_fs_fetch_acl,
2266 * Fetch the ACL for a file.
2268 struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *fc,
2269 struct afs_status_cb *scb)
2271 struct afs_vnode *vnode = fc->vnode;
2272 struct afs_call *call;
2273 struct afs_net *net = afs_v2net(vnode);
2276 _enter(",%x,{%llx:%llu},,",
2277 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2279 call = afs_alloc_flat_call(net, &afs_RXFSFetchACL, 16, (21 + 6) * 4);
2281 fc->ac.error = -ENOMEM;
2282 return ERR_PTR(-ENOMEM);
2285 call->key = fc->key;
2286 call->ret_acl = NULL;
2287 call->out_scb = scb;
2288 call->out_volsync = NULL;
2290 /* marshall the parameters */
2292 bp[0] = htonl(FSFETCHACL);
2293 bp[1] = htonl(vnode->fid.vid);
2294 bp[2] = htonl(vnode->fid.vnode);
2295 bp[3] = htonl(vnode->fid.unique);
2297 afs_use_fs_server(call, fc->cbi);
2298 trace_afs_make_fs_call(call, &vnode->fid);
2299 afs_make_call(&fc->ac, call, GFP_KERNEL);
2300 return (struct afs_acl *)afs_wait_for_call_to_complete(call, &fc->ac);
2304 * Deliver reply data to any operation that returns file status and volume
2307 static int afs_deliver_fs_file_status_and_vol(struct afs_call *call)
2312 ret = afs_transfer_reply(call);
2317 ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
2320 xdr_decode_AFSVolSync(&bp, call->out_volsync);
2322 _leave(" = 0 [done]");
2327 * FS.StoreACL operation type
2329 static const struct afs_call_type afs_RXFSStoreACL = {
2330 .name = "FS.StoreACL",
2331 .op = afs_FS_StoreACL,
2332 .deliver = afs_deliver_fs_file_status_and_vol,
2333 .destructor = afs_flat_call_destructor,
2337 * Fetch the ACL for a file.
2339 int afs_fs_store_acl(struct afs_fs_cursor *fc, const struct afs_acl *acl,
2340 struct afs_status_cb *scb)
2342 struct afs_vnode *vnode = fc->vnode;
2343 struct afs_call *call;
2344 struct afs_net *net = afs_v2net(vnode);
2348 _enter(",%x,{%llx:%llu},,",
2349 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2351 size = round_up(acl->size, 4);
2352 call = afs_alloc_flat_call(net, &afs_RXFSStoreACL,
2353 5 * 4 + size, (21 + 6) * 4);
2355 fc->ac.error = -ENOMEM;
2359 call->key = fc->key;
2360 call->out_scb = scb;
2361 call->out_volsync = NULL;
2363 /* marshall the parameters */
2365 bp[0] = htonl(FSSTOREACL);
2366 bp[1] = htonl(vnode->fid.vid);
2367 bp[2] = htonl(vnode->fid.vnode);
2368 bp[3] = htonl(vnode->fid.unique);
2369 bp[4] = htonl(acl->size);
2370 memcpy(&bp[5], acl->data, acl->size);
2371 if (acl->size != size)
2372 memset((void *)&bp[5] + acl->size, 0, size - acl->size);
2374 trace_afs_make_fs_call(call, &vnode->fid);
2375 afs_make_call(&fc->ac, call, GFP_KERNEL);
2376 return afs_wait_for_call_to_complete(call, &fc->ac);