1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* AFS File Server client stubs
4 * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
8 #include <linux/init.h>
9 #include <linux/slab.h>
10 #include <linux/sched.h>
11 #include <linux/circ_buf.h>
12 #include <linux/iversion.h>
18 * decode an AFSFid block
20 static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
22 const __be32 *bp = *_bp;
24 fid->vid = ntohl(*bp++);
25 fid->vnode = ntohl(*bp++);
26 fid->unique = ntohl(*bp++);
31 * Dump a bad file status record.
33 static void xdr_dump_bad(const __be32 *bp)
38 pr_notice("AFS XDR: Bad status record\n");
39 for (i = 0; i < 5 * 4 * 4; i += 16) {
42 pr_notice("%03x: %08x %08x %08x %08x\n",
43 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
47 pr_notice("0x50: %08x\n", ntohl(x[0]));
51 * decode an AFSFetchStatus block
53 static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
54 struct afs_call *call,
55 struct afs_status_cb *scb)
57 const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
58 struct afs_file_status *status = &scb->status;
59 bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
60 u64 data_version, size;
63 abort_code = ntohl(xdr->abort_code);
65 if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
66 if (xdr->if_version == htonl(0) &&
69 /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
70 * whereby it doesn't set the interface version in the error
73 status->abort_code = abort_code;
74 scb->have_error = true;
78 pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
82 if (abort_code != 0 && inline_error) {
83 status->abort_code = abort_code;
84 scb->have_error = true;
88 type = ntohl(xdr->type);
92 case AFS_FTYPE_SYMLINK:
99 status->nlink = ntohl(xdr->nlink);
100 status->author = ntohl(xdr->author);
101 status->owner = ntohl(xdr->owner);
102 status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
103 status->anon_access = ntohl(xdr->anon_access);
104 status->mode = ntohl(xdr->mode) & S_IALLUGO;
105 status->group = ntohl(xdr->group);
106 status->lock_count = ntohl(xdr->lock_count);
108 status->mtime_client.tv_sec = ntohl(xdr->mtime_client);
109 status->mtime_client.tv_nsec = 0;
110 status->mtime_server.tv_sec = ntohl(xdr->mtime_server);
111 status->mtime_server.tv_nsec = 0;
113 size = (u64)ntohl(xdr->size_lo);
114 size |= (u64)ntohl(xdr->size_hi) << 32;
117 data_version = (u64)ntohl(xdr->data_version_lo);
118 data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
119 status->data_version = data_version;
120 scb->have_status = true;
122 *_bp = (const void *)*_bp + sizeof(*xdr);
127 afs_protocol_error(call, afs_eproto_bad_status);
131 static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry)
133 return ktime_divns(call->reply_time, NSEC_PER_SEC) + expiry;
136 static void xdr_decode_AFSCallBack(const __be32 **_bp,
137 struct afs_call *call,
138 struct afs_status_cb *scb)
140 struct afs_callback *cb = &scb->callback;
141 const __be32 *bp = *_bp;
144 cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++));
151 * decode an AFSVolSync block
153 static void xdr_decode_AFSVolSync(const __be32 **_bp,
154 struct afs_volsync *volsync)
156 const __be32 *bp = *_bp;
159 creation = ntohl(*bp++);
168 volsync->creation = creation;
172 * encode the requested attributes into an AFSStoreStatus block
174 static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
177 u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0;
180 if (attr->ia_valid & ATTR_MTIME) {
181 mask |= AFS_SET_MTIME;
182 mtime = attr->ia_mtime.tv_sec;
185 if (attr->ia_valid & ATTR_UID) {
186 mask |= AFS_SET_OWNER;
187 owner = from_kuid(&init_user_ns, attr->ia_uid);
190 if (attr->ia_valid & ATTR_GID) {
191 mask |= AFS_SET_GROUP;
192 group = from_kgid(&init_user_ns, attr->ia_gid);
195 if (attr->ia_valid & ATTR_MODE) {
196 mask |= AFS_SET_MODE;
197 mode = attr->ia_mode & S_IALLUGO;
201 *bp++ = htonl(mtime);
202 *bp++ = htonl(owner);
203 *bp++ = htonl(group);
205 *bp++ = 0; /* segment size */
210 * decode an AFSFetchVolumeStatus block
212 static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
213 struct afs_volume_status *vs)
215 const __be32 *bp = *_bp;
217 vs->vid = ntohl(*bp++);
218 vs->parent_id = ntohl(*bp++);
219 vs->online = ntohl(*bp++);
220 vs->in_service = ntohl(*bp++);
221 vs->blessed = ntohl(*bp++);
222 vs->needs_salvage = ntohl(*bp++);
223 vs->type = ntohl(*bp++);
224 vs->min_quota = ntohl(*bp++);
225 vs->max_quota = ntohl(*bp++);
226 vs->blocks_in_use = ntohl(*bp++);
227 vs->part_blocks_avail = ntohl(*bp++);
228 vs->part_max_blocks = ntohl(*bp++);
229 vs->vol_copy_date = 0;
230 vs->vol_backup_date = 0;
235 * deliver reply data to an FS.FetchStatus
237 static int afs_deliver_fs_fetch_status(struct afs_call *call)
239 struct afs_operation *op = call->op;
240 struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
244 ret = afs_transfer_reply(call);
248 /* unmarshall the reply once we've received all of it */
250 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
251 xdr_decode_AFSCallBack(&bp, call, &vp->scb);
252 xdr_decode_AFSVolSync(&bp, &op->volsync);
254 _leave(" = 0 [done]");
259 * FS.FetchStatus operation type
261 static const struct afs_call_type afs_RXFSFetchStatus = {
262 .name = "FS.FetchStatus",
263 .op = afs_FS_FetchStatus,
264 .deliver = afs_deliver_fs_fetch_status,
265 .destructor = afs_flat_call_destructor,
269 * fetch the status information for a file
271 void afs_fs_fetch_status(struct afs_operation *op)
273 struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
274 struct afs_call *call;
277 _enter(",%x,{%llx:%llu},,",
278 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
280 call = afs_alloc_flat_call(op->net, &afs_RXFSFetchStatus,
281 16, (21 + 3 + 6) * 4);
283 return afs_op_nomem(op);
285 /* marshall the parameters */
287 bp[0] = htonl(FSFETCHSTATUS);
288 bp[1] = htonl(vp->fid.vid);
289 bp[2] = htonl(vp->fid.vnode);
290 bp[3] = htonl(vp->fid.unique);
292 trace_afs_make_fs_call(call, &vp->fid);
293 afs_make_op_call(op, call, GFP_NOFS);
297 * deliver reply data to an FS.FetchData
299 static int afs_deliver_fs_fetch_data(struct afs_call *call)
301 struct afs_operation *op = call->op;
302 struct afs_vnode_param *vp = &op->file[0];
303 struct afs_read *req = op->fetch.req;
308 _enter("{%u,%zu/%llu}",
309 call->unmarshall, iov_iter_count(call->iter), req->actual_len);
311 switch (call->unmarshall) {
315 req->offset = req->pos & (PAGE_SIZE - 1);
317 if (call->operation_ID == FSFETCHDATA64) {
318 afs_extract_to_tmp64(call);
320 call->tmp_u = htonl(0);
321 afs_extract_to_tmp(call);
325 /* extract the returned data length */
327 _debug("extract data length");
328 ret = afs_extract_data(call, true);
332 req->actual_len = be64_to_cpu(call->tmp64);
333 _debug("DATA length: %llu", req->actual_len);
334 req->remain = min(req->len, req->actual_len);
335 if (req->remain == 0)
341 ASSERTCMP(req->index, <, req->nr_pages);
342 if (req->remain > PAGE_SIZE - req->offset)
343 size = PAGE_SIZE - req->offset;
346 call->bvec[0].bv_len = size;
347 call->bvec[0].bv_offset = req->offset;
348 call->bvec[0].bv_page = req->pages[req->index];
349 iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size);
350 ASSERTCMP(size, <=, PAGE_SIZE);
353 /* extract the returned data */
355 _debug("extract data %zu/%llu",
356 iov_iter_count(call->iter), req->remain);
358 ret = afs_extract_data(call, true);
361 req->remain -= call->bvec[0].bv_len;
362 req->offset += call->bvec[0].bv_len;
363 ASSERTCMP(req->offset, <=, PAGE_SIZE);
364 if (req->offset == PAGE_SIZE) {
371 ASSERTCMP(req->remain, ==, 0);
372 if (req->actual_len <= req->len)
375 /* Discard any excess data the server gave us */
376 afs_extract_discard(call, req->actual_len - req->len);
377 call->unmarshall = 3;
381 _debug("extract discard %zu/%llu",
382 iov_iter_count(call->iter), req->actual_len - req->len);
384 ret = afs_extract_data(call, true);
389 call->unmarshall = 4;
390 afs_extract_to_buf(call, (21 + 3 + 6) * 4);
393 /* extract the metadata */
395 ret = afs_extract_data(call, false);
400 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
401 xdr_decode_AFSCallBack(&bp, call, &vp->scb);
402 xdr_decode_AFSVolSync(&bp, &op->volsync);
404 req->data_version = vp->scb.status.data_version;
405 req->file_size = vp->scb.status.size;
413 for (; req->index < req->nr_pages; req->index++) {
414 if (req->offset < PAGE_SIZE)
415 zero_user_segment(req->pages[req->index],
416 req->offset, PAGE_SIZE);
421 for (req->index = 0; req->index < req->nr_pages; req->index++)
424 _leave(" = 0 [done]");
429 * FS.FetchData operation type
431 static const struct afs_call_type afs_RXFSFetchData = {
432 .name = "FS.FetchData",
433 .op = afs_FS_FetchData,
434 .deliver = afs_deliver_fs_fetch_data,
435 .destructor = afs_flat_call_destructor,
438 static const struct afs_call_type afs_RXFSFetchData64 = {
439 .name = "FS.FetchData64",
440 .op = afs_FS_FetchData64,
441 .deliver = afs_deliver_fs_fetch_data,
442 .destructor = afs_flat_call_destructor,
446 * fetch data from a very large file
448 static void afs_fs_fetch_data64(struct afs_operation *op)
450 struct afs_vnode_param *vp = &op->file[0];
451 struct afs_read *req = op->fetch.req;
452 struct afs_call *call;
457 call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
459 return afs_op_nomem(op);
461 /* marshall the parameters */
463 bp[0] = htonl(FSFETCHDATA64);
464 bp[1] = htonl(vp->fid.vid);
465 bp[2] = htonl(vp->fid.vnode);
466 bp[3] = htonl(vp->fid.unique);
467 bp[4] = htonl(upper_32_bits(req->pos));
468 bp[5] = htonl(lower_32_bits(req->pos));
470 bp[7] = htonl(lower_32_bits(req->len));
472 trace_afs_make_fs_call(call, &vp->fid);
473 afs_make_op_call(op, call, GFP_NOFS);
477 * fetch data from a file
479 void afs_fs_fetch_data(struct afs_operation *op)
481 struct afs_vnode_param *vp = &op->file[0];
482 struct afs_call *call;
483 struct afs_read *req = op->fetch.req;
486 if (upper_32_bits(req->pos) ||
487 upper_32_bits(req->len) ||
488 upper_32_bits(req->pos + req->len))
489 return afs_fs_fetch_data64(op);
493 call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
495 return afs_op_nomem(op);
497 /* marshall the parameters */
499 bp[0] = htonl(FSFETCHDATA);
500 bp[1] = htonl(vp->fid.vid);
501 bp[2] = htonl(vp->fid.vnode);
502 bp[3] = htonl(vp->fid.unique);
503 bp[4] = htonl(lower_32_bits(req->pos));
504 bp[5] = htonl(lower_32_bits(req->len));
506 trace_afs_make_fs_call(call, &vp->fid);
507 afs_make_op_call(op, call, GFP_NOFS);
511 * deliver reply data to an FS.CreateFile or an FS.MakeDir
513 static int afs_deliver_fs_create_vnode(struct afs_call *call)
515 struct afs_operation *op = call->op;
516 struct afs_vnode_param *dvp = &op->file[0];
517 struct afs_vnode_param *vp = &op->file[1];
521 ret = afs_transfer_reply(call);
525 /* unmarshall the reply once we've received all of it */
527 xdr_decode_AFSFid(&bp, &op->file[1].fid);
528 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
529 xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
530 xdr_decode_AFSCallBack(&bp, call, &vp->scb);
531 xdr_decode_AFSVolSync(&bp, &op->volsync);
533 _leave(" = 0 [done]");
538 * FS.CreateFile and FS.MakeDir operation type
540 static const struct afs_call_type afs_RXFSCreateFile = {
541 .name = "FS.CreateFile",
542 .op = afs_FS_CreateFile,
543 .deliver = afs_deliver_fs_create_vnode,
544 .destructor = afs_flat_call_destructor,
550 void afs_fs_create_file(struct afs_operation *op)
552 const struct qstr *name = &op->dentry->d_name;
553 struct afs_vnode_param *dvp = &op->file[0];
554 struct afs_call *call;
555 size_t namesz, reqsz, padsz;
561 padsz = (4 - (namesz & 3)) & 3;
562 reqsz = (5 * 4) + namesz + padsz + (6 * 4);
564 call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile,
565 reqsz, (3 + 21 + 21 + 3 + 6) * 4);
567 return afs_op_nomem(op);
569 /* marshall the parameters */
571 *bp++ = htonl(FSCREATEFILE);
572 *bp++ = htonl(dvp->fid.vid);
573 *bp++ = htonl(dvp->fid.vnode);
574 *bp++ = htonl(dvp->fid.unique);
575 *bp++ = htonl(namesz);
576 memcpy(bp, name->name, namesz);
577 bp = (void *) bp + namesz;
579 memset(bp, 0, padsz);
580 bp = (void *) bp + padsz;
582 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
583 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
584 *bp++ = 0; /* owner */
585 *bp++ = 0; /* group */
586 *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
587 *bp++ = 0; /* segment size */
589 trace_afs_make_fs_call1(call, &dvp->fid, name);
590 afs_make_op_call(op, call, GFP_NOFS);
593 static const struct afs_call_type afs_RXFSMakeDir = {
594 .name = "FS.MakeDir",
595 .op = afs_FS_MakeDir,
596 .deliver = afs_deliver_fs_create_vnode,
597 .destructor = afs_flat_call_destructor,
601 * Create a new directory
603 void afs_fs_make_dir(struct afs_operation *op)
605 const struct qstr *name = &op->dentry->d_name;
606 struct afs_vnode_param *dvp = &op->file[0];
607 struct afs_call *call;
608 size_t namesz, reqsz, padsz;
614 padsz = (4 - (namesz & 3)) & 3;
615 reqsz = (5 * 4) + namesz + padsz + (6 * 4);
617 call = afs_alloc_flat_call(op->net, &afs_RXFSMakeDir,
618 reqsz, (3 + 21 + 21 + 3 + 6) * 4);
620 return afs_op_nomem(op);
622 /* marshall the parameters */
624 *bp++ = htonl(FSMAKEDIR);
625 *bp++ = htonl(dvp->fid.vid);
626 *bp++ = htonl(dvp->fid.vnode);
627 *bp++ = htonl(dvp->fid.unique);
628 *bp++ = htonl(namesz);
629 memcpy(bp, name->name, namesz);
630 bp = (void *) bp + namesz;
632 memset(bp, 0, padsz);
633 bp = (void *) bp + padsz;
635 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
636 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
637 *bp++ = 0; /* owner */
638 *bp++ = 0; /* group */
639 *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
640 *bp++ = 0; /* segment size */
642 trace_afs_make_fs_call1(call, &dvp->fid, name);
643 afs_make_op_call(op, call, GFP_NOFS);
647 * Deliver reply data to any operation that returns status and volume sync.
649 static int afs_deliver_fs_file_status_and_vol(struct afs_call *call)
651 struct afs_operation *op = call->op;
652 struct afs_vnode_param *vp = &op->file[0];
656 ret = afs_transfer_reply(call);
660 /* unmarshall the reply once we've received all of it */
662 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
663 xdr_decode_AFSVolSync(&bp, &op->volsync);
665 _leave(" = 0 [done]");
670 * FS.RemoveFile operation type
672 static const struct afs_call_type afs_RXFSRemoveFile = {
673 .name = "FS.RemoveFile",
674 .op = afs_FS_RemoveFile,
675 .deliver = afs_deliver_fs_file_status_and_vol,
676 .destructor = afs_flat_call_destructor,
682 void afs_fs_remove_file(struct afs_operation *op)
684 const struct qstr *name = &op->dentry->d_name;
685 struct afs_vnode_param *dvp = &op->file[0];
686 struct afs_call *call;
687 size_t namesz, reqsz, padsz;
693 padsz = (4 - (namesz & 3)) & 3;
694 reqsz = (5 * 4) + namesz + padsz;
696 call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveFile,
697 reqsz, (21 + 6) * 4);
699 return afs_op_nomem(op);
701 /* marshall the parameters */
703 *bp++ = htonl(FSREMOVEFILE);
704 *bp++ = htonl(dvp->fid.vid);
705 *bp++ = htonl(dvp->fid.vnode);
706 *bp++ = htonl(dvp->fid.unique);
707 *bp++ = htonl(namesz);
708 memcpy(bp, name->name, namesz);
709 bp = (void *) bp + namesz;
711 memset(bp, 0, padsz);
712 bp = (void *) bp + padsz;
715 trace_afs_make_fs_call1(call, &dvp->fid, name);
716 afs_make_op_call(op, call, GFP_NOFS);
719 static const struct afs_call_type afs_RXFSRemoveDir = {
720 .name = "FS.RemoveDir",
721 .op = afs_FS_RemoveDir,
722 .deliver = afs_deliver_fs_file_status_and_vol,
723 .destructor = afs_flat_call_destructor,
727 * Remove a directory.
729 void afs_fs_remove_dir(struct afs_operation *op)
731 const struct qstr *name = &op->dentry->d_name;
732 struct afs_vnode_param *dvp = &op->file[0];
733 struct afs_call *call;
734 size_t namesz, reqsz, padsz;
740 padsz = (4 - (namesz & 3)) & 3;
741 reqsz = (5 * 4) + namesz + padsz;
743 call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveDir,
744 reqsz, (21 + 6) * 4);
746 return afs_op_nomem(op);
748 /* marshall the parameters */
750 *bp++ = htonl(FSREMOVEDIR);
751 *bp++ = htonl(dvp->fid.vid);
752 *bp++ = htonl(dvp->fid.vnode);
753 *bp++ = htonl(dvp->fid.unique);
754 *bp++ = htonl(namesz);
755 memcpy(bp, name->name, namesz);
756 bp = (void *) bp + namesz;
758 memset(bp, 0, padsz);
759 bp = (void *) bp + padsz;
762 trace_afs_make_fs_call1(call, &dvp->fid, name);
763 afs_make_op_call(op, call, GFP_NOFS);
767 * deliver reply data to an FS.Link
769 static int afs_deliver_fs_link(struct afs_call *call)
771 struct afs_operation *op = call->op;
772 struct afs_vnode_param *dvp = &op->file[0];
773 struct afs_vnode_param *vp = &op->file[1];
777 _enter("{%u}", call->unmarshall);
779 ret = afs_transfer_reply(call);
783 /* unmarshall the reply once we've received all of it */
785 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
786 xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
787 xdr_decode_AFSVolSync(&bp, &op->volsync);
789 _leave(" = 0 [done]");
794 * FS.Link operation type
796 static const struct afs_call_type afs_RXFSLink = {
799 .deliver = afs_deliver_fs_link,
800 .destructor = afs_flat_call_destructor,
806 void afs_fs_link(struct afs_operation *op)
808 const struct qstr *name = &op->dentry->d_name;
809 struct afs_vnode_param *dvp = &op->file[0];
810 struct afs_vnode_param *vp = &op->file[1];
811 struct afs_call *call;
812 size_t namesz, reqsz, padsz;
818 padsz = (4 - (namesz & 3)) & 3;
819 reqsz = (5 * 4) + namesz + padsz + (3 * 4);
821 call = afs_alloc_flat_call(op->net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
823 return afs_op_nomem(op);
825 /* marshall the parameters */
827 *bp++ = htonl(FSLINK);
828 *bp++ = htonl(dvp->fid.vid);
829 *bp++ = htonl(dvp->fid.vnode);
830 *bp++ = htonl(dvp->fid.unique);
831 *bp++ = htonl(namesz);
832 memcpy(bp, name->name, namesz);
833 bp = (void *) bp + namesz;
835 memset(bp, 0, padsz);
836 bp = (void *) bp + padsz;
838 *bp++ = htonl(vp->fid.vid);
839 *bp++ = htonl(vp->fid.vnode);
840 *bp++ = htonl(vp->fid.unique);
842 trace_afs_make_fs_call1(call, &vp->fid, name);
843 afs_make_op_call(op, call, GFP_NOFS);
847 * deliver reply data to an FS.Symlink
849 static int afs_deliver_fs_symlink(struct afs_call *call)
851 struct afs_operation *op = call->op;
852 struct afs_vnode_param *dvp = &op->file[0];
853 struct afs_vnode_param *vp = &op->file[1];
857 _enter("{%u}", call->unmarshall);
859 ret = afs_transfer_reply(call);
863 /* unmarshall the reply once we've received all of it */
865 xdr_decode_AFSFid(&bp, &vp->fid);
866 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
867 xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
868 xdr_decode_AFSVolSync(&bp, &op->volsync);
870 _leave(" = 0 [done]");
875 * FS.Symlink operation type
877 static const struct afs_call_type afs_RXFSSymlink = {
878 .name = "FS.Symlink",
879 .op = afs_FS_Symlink,
880 .deliver = afs_deliver_fs_symlink,
881 .destructor = afs_flat_call_destructor,
885 * create a symbolic link
887 void afs_fs_symlink(struct afs_operation *op)
889 const struct qstr *name = &op->dentry->d_name;
890 struct afs_vnode_param *dvp = &op->file[0];
891 struct afs_call *call;
892 size_t namesz, reqsz, padsz, c_namesz, c_padsz;
898 padsz = (4 - (namesz & 3)) & 3;
900 c_namesz = strlen(op->create.symlink);
901 c_padsz = (4 - (c_namesz & 3)) & 3;
903 reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
905 call = afs_alloc_flat_call(op->net, &afs_RXFSSymlink, reqsz,
906 (3 + 21 + 21 + 6) * 4);
908 return afs_op_nomem(op);
910 /* marshall the parameters */
912 *bp++ = htonl(FSSYMLINK);
913 *bp++ = htonl(dvp->fid.vid);
914 *bp++ = htonl(dvp->fid.vnode);
915 *bp++ = htonl(dvp->fid.unique);
916 *bp++ = htonl(namesz);
917 memcpy(bp, name->name, namesz);
918 bp = (void *) bp + namesz;
920 memset(bp, 0, padsz);
921 bp = (void *) bp + padsz;
923 *bp++ = htonl(c_namesz);
924 memcpy(bp, op->create.symlink, c_namesz);
925 bp = (void *) bp + c_namesz;
927 memset(bp, 0, c_padsz);
928 bp = (void *) bp + c_padsz;
930 *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
931 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
932 *bp++ = 0; /* owner */
933 *bp++ = 0; /* group */
934 *bp++ = htonl(S_IRWXUGO); /* unix mode */
935 *bp++ = 0; /* segment size */
937 trace_afs_make_fs_call1(call, &dvp->fid, name);
938 afs_make_op_call(op, call, GFP_NOFS);
942 * deliver reply data to an FS.Rename
944 static int afs_deliver_fs_rename(struct afs_call *call)
946 struct afs_operation *op = call->op;
947 struct afs_vnode_param *orig_dvp = &op->file[0];
948 struct afs_vnode_param *new_dvp = &op->file[1];
952 ret = afs_transfer_reply(call);
957 /* If the two dirs are the same, we have two copies of the same status
958 * report, so we just decode it twice.
960 xdr_decode_AFSFetchStatus(&bp, call, &orig_dvp->scb);
961 xdr_decode_AFSFetchStatus(&bp, call, &new_dvp->scb);
962 xdr_decode_AFSVolSync(&bp, &op->volsync);
964 _leave(" = 0 [done]");
969 * FS.Rename operation type
971 static const struct afs_call_type afs_RXFSRename = {
974 .deliver = afs_deliver_fs_rename,
975 .destructor = afs_flat_call_destructor,
979 * Rename/move a file or directory.
981 void afs_fs_rename(struct afs_operation *op)
983 struct afs_vnode_param *orig_dvp = &op->file[0];
984 struct afs_vnode_param *new_dvp = &op->file[1];
985 const struct qstr *orig_name = &op->dentry->d_name;
986 const struct qstr *new_name = &op->dentry_2->d_name;
987 struct afs_call *call;
988 size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
993 o_namesz = orig_name->len;
994 o_padsz = (4 - (o_namesz & 3)) & 3;
996 n_namesz = new_name->len;
997 n_padsz = (4 - (n_namesz & 3)) & 3;
1000 4 + o_namesz + o_padsz +
1002 4 + n_namesz + n_padsz;
1004 call = afs_alloc_flat_call(op->net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
1006 return afs_op_nomem(op);
1008 /* marshall the parameters */
1010 *bp++ = htonl(FSRENAME);
1011 *bp++ = htonl(orig_dvp->fid.vid);
1012 *bp++ = htonl(orig_dvp->fid.vnode);
1013 *bp++ = htonl(orig_dvp->fid.unique);
1014 *bp++ = htonl(o_namesz);
1015 memcpy(bp, orig_name->name, o_namesz);
1016 bp = (void *) bp + o_namesz;
1018 memset(bp, 0, o_padsz);
1019 bp = (void *) bp + o_padsz;
1022 *bp++ = htonl(new_dvp->fid.vid);
1023 *bp++ = htonl(new_dvp->fid.vnode);
1024 *bp++ = htonl(new_dvp->fid.unique);
1025 *bp++ = htonl(n_namesz);
1026 memcpy(bp, new_name->name, n_namesz);
1027 bp = (void *) bp + n_namesz;
1029 memset(bp, 0, n_padsz);
1030 bp = (void *) bp + n_padsz;
1033 trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
1034 afs_make_op_call(op, call, GFP_NOFS);
1038 * Deliver reply data to FS.StoreData or FS.StoreStatus
1040 static int afs_deliver_fs_store_data(struct afs_call *call)
1042 struct afs_operation *op = call->op;
1043 struct afs_vnode_param *vp = &op->file[0];
1049 ret = afs_transfer_reply(call);
1053 /* unmarshall the reply once we've received all of it */
1055 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
1056 xdr_decode_AFSVolSync(&bp, &op->volsync);
1058 _leave(" = 0 [done]");
1063 * FS.StoreData operation type
1065 static const struct afs_call_type afs_RXFSStoreData = {
1066 .name = "FS.StoreData",
1067 .op = afs_FS_StoreData,
1068 .deliver = afs_deliver_fs_store_data,
1069 .destructor = afs_flat_call_destructor,
1072 static const struct afs_call_type afs_RXFSStoreData64 = {
1073 .name = "FS.StoreData64",
1074 .op = afs_FS_StoreData64,
1075 .deliver = afs_deliver_fs_store_data,
1076 .destructor = afs_flat_call_destructor,
1080 * store a set of pages to a very large file
1082 static void afs_fs_store_data64(struct afs_operation *op,
1083 loff_t pos, loff_t size, loff_t i_size)
1085 struct afs_vnode_param *vp = &op->file[0];
1086 struct afs_call *call;
1089 _enter(",%x,{%llx:%llu},,",
1090 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1092 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64,
1093 (4 + 6 + 3 * 2) * 4,
1096 return afs_op_nomem(op);
1098 call->send_pages = true;
1100 /* marshall the parameters */
1102 *bp++ = htonl(FSSTOREDATA64);
1103 *bp++ = htonl(vp->fid.vid);
1104 *bp++ = htonl(vp->fid.vnode);
1105 *bp++ = htonl(vp->fid.unique);
1107 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1108 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
1109 *bp++ = 0; /* owner */
1110 *bp++ = 0; /* group */
1111 *bp++ = 0; /* unix mode */
1112 *bp++ = 0; /* segment size */
1114 *bp++ = htonl(upper_32_bits(pos));
1115 *bp++ = htonl(lower_32_bits(pos));
1116 *bp++ = htonl(upper_32_bits(size));
1117 *bp++ = htonl(lower_32_bits(size));
1118 *bp++ = htonl(upper_32_bits(i_size));
1119 *bp++ = htonl(lower_32_bits(i_size));
1121 trace_afs_make_fs_call(call, &vp->fid);
1122 afs_make_op_call(op, call, GFP_NOFS);
1126 * store a set of pages
1128 void afs_fs_store_data(struct afs_operation *op)
1130 struct afs_vnode_param *vp = &op->file[0];
1131 struct afs_call *call;
1132 loff_t size, pos, i_size;
1135 _enter(",%x,{%llx:%llu},,",
1136 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1138 size = (loff_t)op->store.last_to - (loff_t)op->store.first_offset;
1139 if (op->store.first != op->store.last)
1140 size += (loff_t)(op->store.last - op->store.first) << PAGE_SHIFT;
1141 pos = (loff_t)op->store.first << PAGE_SHIFT;
1142 pos += op->store.first_offset;
1144 i_size = i_size_read(&vp->vnode->vfs_inode);
1145 if (pos + size > i_size)
1146 i_size = size + pos;
1148 _debug("size %llx, at %llx, i_size %llx",
1149 (unsigned long long) size, (unsigned long long) pos,
1150 (unsigned long long) i_size);
1152 if (upper_32_bits(pos) || upper_32_bits(i_size) || upper_32_bits(size) ||
1153 upper_32_bits(pos + size))
1154 return afs_fs_store_data64(op, pos, size, i_size);
1156 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData,
1160 return afs_op_nomem(op);
1162 call->send_pages = true;
1164 /* marshall the parameters */
1166 *bp++ = htonl(FSSTOREDATA);
1167 *bp++ = htonl(vp->fid.vid);
1168 *bp++ = htonl(vp->fid.vnode);
1169 *bp++ = htonl(vp->fid.unique);
1171 *bp++ = htonl(AFS_SET_MTIME); /* mask */
1172 *bp++ = htonl(op->mtime.tv_sec); /* mtime */
1173 *bp++ = 0; /* owner */
1174 *bp++ = 0; /* group */
1175 *bp++ = 0; /* unix mode */
1176 *bp++ = 0; /* segment size */
1178 *bp++ = htonl(lower_32_bits(pos));
1179 *bp++ = htonl(lower_32_bits(size));
1180 *bp++ = htonl(lower_32_bits(i_size));
1182 trace_afs_make_fs_call(call, &vp->fid);
1183 afs_make_op_call(op, call, GFP_NOFS);
1187 * FS.StoreStatus operation type
1189 static const struct afs_call_type afs_RXFSStoreStatus = {
1190 .name = "FS.StoreStatus",
1191 .op = afs_FS_StoreStatus,
1192 .deliver = afs_deliver_fs_store_data,
1193 .destructor = afs_flat_call_destructor,
1196 static const struct afs_call_type afs_RXFSStoreData_as_Status = {
1197 .name = "FS.StoreData",
1198 .op = afs_FS_StoreData,
1199 .deliver = afs_deliver_fs_store_data,
1200 .destructor = afs_flat_call_destructor,
1203 static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
1204 .name = "FS.StoreData64",
1205 .op = afs_FS_StoreData64,
1206 .deliver = afs_deliver_fs_store_data,
1207 .destructor = afs_flat_call_destructor,
1211 * set the attributes on a very large file, using FS.StoreData rather than
1212 * FS.StoreStatus so as to alter the file size also
1214 static void afs_fs_setattr_size64(struct afs_operation *op)
1216 struct afs_vnode_param *vp = &op->file[0];
1217 struct afs_call *call;
1218 struct iattr *attr = op->setattr.attr;
1221 _enter(",%x,{%llx:%llu},,",
1222 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1224 ASSERT(attr->ia_valid & ATTR_SIZE);
1226 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64_as_Status,
1227 (4 + 6 + 3 * 2) * 4,
1230 return afs_op_nomem(op);
1232 /* marshall the parameters */
1234 *bp++ = htonl(FSSTOREDATA64);
1235 *bp++ = htonl(vp->fid.vid);
1236 *bp++ = htonl(vp->fid.vnode);
1237 *bp++ = htonl(vp->fid.unique);
1239 xdr_encode_AFS_StoreStatus(&bp, attr);
1241 *bp++ = htonl(upper_32_bits(attr->ia_size)); /* position of start of write */
1242 *bp++ = htonl(lower_32_bits(attr->ia_size));
1243 *bp++ = 0; /* size of write */
1245 *bp++ = htonl(upper_32_bits(attr->ia_size)); /* new file length */
1246 *bp++ = htonl(lower_32_bits(attr->ia_size));
1248 trace_afs_make_fs_call(call, &vp->fid);
1249 afs_make_op_call(op, call, GFP_NOFS);
1253 * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
1254 * so as to alter the file size also
1256 static void afs_fs_setattr_size(struct afs_operation *op)
1258 struct afs_vnode_param *vp = &op->file[0];
1259 struct afs_call *call;
1260 struct iattr *attr = op->setattr.attr;
1263 _enter(",%x,{%llx:%llu},,",
1264 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1266 ASSERT(attr->ia_valid & ATTR_SIZE);
1267 if (upper_32_bits(attr->ia_size))
1268 return afs_fs_setattr_size64(op);
1270 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData_as_Status,
1274 return afs_op_nomem(op);
1276 /* marshall the parameters */
1278 *bp++ = htonl(FSSTOREDATA);
1279 *bp++ = htonl(vp->fid.vid);
1280 *bp++ = htonl(vp->fid.vnode);
1281 *bp++ = htonl(vp->fid.unique);
1283 xdr_encode_AFS_StoreStatus(&bp, attr);
1285 *bp++ = htonl(attr->ia_size); /* position of start of write */
1286 *bp++ = 0; /* size of write */
1287 *bp++ = htonl(attr->ia_size); /* new file length */
1289 trace_afs_make_fs_call(call, &vp->fid);
1290 afs_make_op_call(op, call, GFP_NOFS);
1294 * set the attributes on a file, using FS.StoreData if there's a change in file
1295 * size, and FS.StoreStatus otherwise
1297 void afs_fs_setattr(struct afs_operation *op)
1299 struct afs_vnode_param *vp = &op->file[0];
1300 struct afs_call *call;
1301 struct iattr *attr = op->setattr.attr;
1304 if (attr->ia_valid & ATTR_SIZE)
1305 return afs_fs_setattr_size(op);
1307 _enter(",%x,{%llx:%llu},,",
1308 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
1310 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreStatus,
1314 return afs_op_nomem(op);
1316 /* marshall the parameters */
1318 *bp++ = htonl(FSSTORESTATUS);
1319 *bp++ = htonl(vp->fid.vid);
1320 *bp++ = htonl(vp->fid.vnode);
1321 *bp++ = htonl(vp->fid.unique);
1323 xdr_encode_AFS_StoreStatus(&bp, op->setattr.attr);
1325 trace_afs_make_fs_call(call, &vp->fid);
1326 afs_make_op_call(op, call, GFP_NOFS);
1330 * deliver reply data to an FS.GetVolumeStatus
1332 static int afs_deliver_fs_get_volume_status(struct afs_call *call)
1334 struct afs_operation *op = call->op;
1340 _enter("{%u}", call->unmarshall);
1342 switch (call->unmarshall) {
1345 afs_extract_to_buf(call, 12 * 4);
1348 /* extract the returned status record */
1350 _debug("extract status");
1351 ret = afs_extract_data(call, true);
1356 xdr_decode_AFSFetchVolumeStatus(&bp, &op->volstatus.vs);
1358 afs_extract_to_tmp(call);
1361 /* extract the volume name length */
1363 ret = afs_extract_data(call, true);
1367 call->count = ntohl(call->tmp);
1368 _debug("volname length: %u", call->count);
1369 if (call->count >= AFSNAMEMAX)
1370 return afs_protocol_error(call, afs_eproto_volname_len);
1371 size = (call->count + 3) & ~3; /* It's padded */
1372 afs_extract_to_buf(call, size);
1376 /* extract the volume name */
1378 _debug("extract volname");
1379 ret = afs_extract_data(call, true);
1385 _debug("volname '%s'", p);
1386 afs_extract_to_tmp(call);
1390 /* extract the offline message length */
1392 ret = afs_extract_data(call, true);
1396 call->count = ntohl(call->tmp);
1397 _debug("offline msg length: %u", call->count);
1398 if (call->count >= AFSNAMEMAX)
1399 return afs_protocol_error(call, afs_eproto_offline_msg_len);
1400 size = (call->count + 3) & ~3; /* It's padded */
1401 afs_extract_to_buf(call, size);
1405 /* extract the offline message */
1407 _debug("extract offline");
1408 ret = afs_extract_data(call, true);
1414 _debug("offline '%s'", p);
1416 afs_extract_to_tmp(call);
1420 /* extract the message of the day length */
1422 ret = afs_extract_data(call, true);
1426 call->count = ntohl(call->tmp);
1427 _debug("motd length: %u", call->count);
1428 if (call->count >= AFSNAMEMAX)
1429 return afs_protocol_error(call, afs_eproto_motd_len);
1430 size = (call->count + 3) & ~3; /* It's padded */
1431 afs_extract_to_buf(call, size);
1435 /* extract the message of the day */
1437 _debug("extract motd");
1438 ret = afs_extract_data(call, false);
1444 _debug("motd '%s'", p);
1452 _leave(" = 0 [done]");
1457 * FS.GetVolumeStatus operation type
1459 static const struct afs_call_type afs_RXFSGetVolumeStatus = {
1460 .name = "FS.GetVolumeStatus",
1461 .op = afs_FS_GetVolumeStatus,
1462 .deliver = afs_deliver_fs_get_volume_status,
1463 .destructor = afs_flat_call_destructor,
1467 * fetch the status of a volume
1469 void afs_fs_get_volume_status(struct afs_operation *op)
1471 struct afs_vnode_param *vp = &op->file[0];
1472 struct afs_call *call;
1477 call = afs_alloc_flat_call(op->net, &afs_RXFSGetVolumeStatus, 2 * 4,
1478 max(12 * 4, AFSOPAQUEMAX + 1));
1480 return afs_op_nomem(op);
1482 /* marshall the parameters */
1484 bp[0] = htonl(FSGETVOLUMESTATUS);
1485 bp[1] = htonl(vp->fid.vid);
1487 trace_afs_make_fs_call(call, &vp->fid);
1488 afs_make_op_call(op, call, GFP_NOFS);
1492 * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
1494 static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
1496 struct afs_operation *op = call->op;
1500 _enter("{%u}", call->unmarshall);
1502 ret = afs_transfer_reply(call);
1506 /* unmarshall the reply once we've received all of it */
1508 xdr_decode_AFSVolSync(&bp, &op->volsync);
1510 _leave(" = 0 [done]");
1515 * FS.SetLock operation type
1517 static const struct afs_call_type afs_RXFSSetLock = {
1518 .name = "FS.SetLock",
1519 .op = afs_FS_SetLock,
1520 .deliver = afs_deliver_fs_xxxx_lock,
1521 .done = afs_lock_op_done,
1522 .destructor = afs_flat_call_destructor,
1526 * FS.ExtendLock operation type
1528 static const struct afs_call_type afs_RXFSExtendLock = {
1529 .name = "FS.ExtendLock",
1530 .op = afs_FS_ExtendLock,
1531 .deliver = afs_deliver_fs_xxxx_lock,
1532 .done = afs_lock_op_done,
1533 .destructor = afs_flat_call_destructor,
1537 * FS.ReleaseLock operation type
1539 static const struct afs_call_type afs_RXFSReleaseLock = {
1540 .name = "FS.ReleaseLock",
1541 .op = afs_FS_ReleaseLock,
1542 .deliver = afs_deliver_fs_xxxx_lock,
1543 .destructor = afs_flat_call_destructor,
1547 * Set a lock on a file
1549 void afs_fs_set_lock(struct afs_operation *op)
1551 struct afs_vnode_param *vp = &op->file[0];
1552 struct afs_call *call;
1557 call = afs_alloc_flat_call(op->net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
1559 return afs_op_nomem(op);
1561 /* marshall the parameters */
1563 *bp++ = htonl(FSSETLOCK);
1564 *bp++ = htonl(vp->fid.vid);
1565 *bp++ = htonl(vp->fid.vnode);
1566 *bp++ = htonl(vp->fid.unique);
1567 *bp++ = htonl(op->lock.type);
1569 trace_afs_make_fs_calli(call, &vp->fid, op->lock.type);
1570 afs_make_op_call(op, call, GFP_NOFS);
1574 * extend a lock on a file
1576 void afs_fs_extend_lock(struct afs_operation *op)
1578 struct afs_vnode_param *vp = &op->file[0];
1579 struct afs_call *call;
1584 call = afs_alloc_flat_call(op->net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
1586 return afs_op_nomem(op);
1588 /* marshall the parameters */
1590 *bp++ = htonl(FSEXTENDLOCK);
1591 *bp++ = htonl(vp->fid.vid);
1592 *bp++ = htonl(vp->fid.vnode);
1593 *bp++ = htonl(vp->fid.unique);
1595 trace_afs_make_fs_call(call, &vp->fid);
1596 afs_make_op_call(op, call, GFP_NOFS);
1600 * release a lock on a file
1602 void afs_fs_release_lock(struct afs_operation *op)
1604 struct afs_vnode_param *vp = &op->file[0];
1605 struct afs_call *call;
1610 call = afs_alloc_flat_call(op->net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
1612 return afs_op_nomem(op);
1614 /* marshall the parameters */
1616 *bp++ = htonl(FSRELEASELOCK);
1617 *bp++ = htonl(vp->fid.vid);
1618 *bp++ = htonl(vp->fid.vnode);
1619 *bp++ = htonl(vp->fid.unique);
1621 trace_afs_make_fs_call(call, &vp->fid);
1622 afs_make_op_call(op, call, GFP_NOFS);
1626 * Deliver reply data to an FS.GiveUpAllCallBacks operation.
1628 static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call)
1630 return afs_transfer_reply(call);
1634 * FS.GiveUpAllCallBacks operation type
1636 static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = {
1637 .name = "FS.GiveUpAllCallBacks",
1638 .op = afs_FS_GiveUpAllCallBacks,
1639 .deliver = afs_deliver_fs_give_up_all_callbacks,
1640 .destructor = afs_flat_call_destructor,
1644 * Flush all the callbacks we have on a server.
1646 int afs_fs_give_up_all_callbacks(struct afs_net *net,
1647 struct afs_server *server,
1648 struct afs_addr_cursor *ac,
1651 struct afs_call *call;
1656 call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0);
1662 /* marshall the parameters */
1664 *bp++ = htonl(FSGIVEUPALLCALLBACKS);
1666 call->server = afs_use_server(server, afs_server_trace_give_up_cb);
1667 afs_make_call(ac, call, GFP_NOFS);
1668 return afs_wait_for_call_to_complete(call, ac);
1672 * Deliver reply data to an FS.GetCapabilities operation.
1674 static int afs_deliver_fs_get_capabilities(struct afs_call *call)
1679 _enter("{%u,%zu}", call->unmarshall, iov_iter_count(call->iter));
1681 switch (call->unmarshall) {
1683 afs_extract_to_tmp(call);
1687 /* Extract the capabilities word count */
1689 ret = afs_extract_data(call, true);
1693 count = ntohl(call->tmp);
1695 call->count = count;
1696 call->count2 = count;
1697 afs_extract_discard(call, count * sizeof(__be32));
1701 /* Extract capabilities words */
1703 ret = afs_extract_data(call, false);
1707 /* TODO: Examine capabilities */
1713 _leave(" = 0 [done]");
1718 * FS.GetCapabilities operation type
1720 static const struct afs_call_type afs_RXFSGetCapabilities = {
1721 .name = "FS.GetCapabilities",
1722 .op = afs_FS_GetCapabilities,
1723 .deliver = afs_deliver_fs_get_capabilities,
1724 .done = afs_fileserver_probe_result,
1725 .destructor = afs_flat_call_destructor,
1729 * Probe a fileserver for the capabilities that it supports. This RPC can
1730 * reply with up to 196 words. The operation is asynchronous and if we managed
1731 * to allocate a call, true is returned the result is delivered through the
1732 * ->done() - otherwise we return false to indicate we didn't even try.
1734 bool afs_fs_get_capabilities(struct afs_net *net, struct afs_server *server,
1735 struct afs_addr_cursor *ac, struct key *key)
1737 struct afs_call *call;
1742 call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
1747 call->server = afs_use_server(server, afs_server_trace_get_caps);
1748 call->upgrade = true;
1750 call->max_lifespan = AFS_PROBE_MAX_LIFESPAN;
1752 /* marshall the parameters */
1754 *bp++ = htonl(FSGETCAPABILITIES);
1756 trace_afs_make_fs_call(call, NULL);
1757 afs_make_call(ac, call, GFP_NOFS);
1763 * Deliver reply data to an FS.InlineBulkStatus call
1765 static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
1767 struct afs_operation *op = call->op;
1768 struct afs_status_cb *scb;
1773 _enter("{%u}", call->unmarshall);
1775 switch (call->unmarshall) {
1777 afs_extract_to_tmp(call);
1781 /* Extract the file status count and array in two steps */
1783 _debug("extract status count");
1784 ret = afs_extract_data(call, true);
1788 tmp = ntohl(call->tmp);
1789 _debug("status count: %u/%u", tmp, op->nr_files);
1790 if (tmp != op->nr_files)
1791 return afs_protocol_error(call, afs_eproto_ibulkst_count);
1796 afs_extract_to_buf(call, 21 * sizeof(__be32));
1800 _debug("extract status array %u", call->count);
1801 ret = afs_extract_data(call, true);
1805 switch (call->count) {
1807 scb = &op->file[0].scb;
1810 scb = &op->file[1].scb;
1813 scb = &op->more_files[call->count - 2].scb;
1818 xdr_decode_AFSFetchStatus(&bp, call, scb);
1821 if (call->count < op->nr_files)
1826 afs_extract_to_tmp(call);
1829 /* Extract the callback count and array in two steps */
1831 _debug("extract CB count");
1832 ret = afs_extract_data(call, true);
1836 tmp = ntohl(call->tmp);
1837 _debug("CB count: %u", tmp);
1838 if (tmp != op->nr_files)
1839 return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
1843 afs_extract_to_buf(call, 3 * sizeof(__be32));
1847 _debug("extract CB array");
1848 ret = afs_extract_data(call, true);
1852 _debug("unmarshall CB array");
1853 switch (call->count) {
1855 scb = &op->file[0].scb;
1858 scb = &op->file[1].scb;
1861 scb = &op->more_files[call->count - 2].scb;
1866 xdr_decode_AFSCallBack(&bp, call, scb);
1868 if (call->count < op->nr_files)
1871 afs_extract_to_buf(call, 6 * sizeof(__be32));
1876 ret = afs_extract_data(call, false);
1881 xdr_decode_AFSVolSync(&bp, &op->volsync);
1889 _leave(" = 0 [done]");
1893 static void afs_done_fs_inline_bulk_status(struct afs_call *call)
1895 if (call->error == -ECONNABORTED &&
1896 call->abort_code == RX_INVALID_OPERATION) {
1897 set_bit(AFS_SERVER_FL_NO_IBULK, &call->server->flags);
1899 set_bit(AFS_VOLUME_MAYBE_NO_IBULK, &call->op->volume->flags);
1904 * FS.InlineBulkStatus operation type
1906 static const struct afs_call_type afs_RXFSInlineBulkStatus = {
1907 .name = "FS.InlineBulkStatus",
1908 .op = afs_FS_InlineBulkStatus,
1909 .deliver = afs_deliver_fs_inline_bulk_status,
1910 .done = afs_done_fs_inline_bulk_status,
1911 .destructor = afs_flat_call_destructor,
1915 * Fetch the status information for up to 50 files
1917 void afs_fs_inline_bulk_status(struct afs_operation *op)
1919 struct afs_vnode_param *dvp = &op->file[0];
1920 struct afs_vnode_param *vp = &op->file[1];
1921 struct afs_call *call;
1925 if (test_bit(AFS_SERVER_FL_NO_IBULK, &op->server->flags)) {
1926 op->error = -ENOTSUPP;
1930 _enter(",%x,{%llx:%llu},%u",
1931 key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files);
1933 call = afs_alloc_flat_call(op->net, &afs_RXFSInlineBulkStatus,
1934 (2 + op->nr_files * 3) * 4,
1937 return afs_op_nomem(op);
1939 /* marshall the parameters */
1941 *bp++ = htonl(FSINLINEBULKSTATUS);
1942 *bp++ = htonl(op->nr_files);
1943 *bp++ = htonl(dvp->fid.vid);
1944 *bp++ = htonl(dvp->fid.vnode);
1945 *bp++ = htonl(dvp->fid.unique);
1946 *bp++ = htonl(vp->fid.vid);
1947 *bp++ = htonl(vp->fid.vnode);
1948 *bp++ = htonl(vp->fid.unique);
1949 for (i = 0; i < op->nr_files - 2; i++) {
1950 *bp++ = htonl(op->more_files[i].fid.vid);
1951 *bp++ = htonl(op->more_files[i].fid.vnode);
1952 *bp++ = htonl(op->more_files[i].fid.unique);
1955 trace_afs_make_fs_call(call, &vp->fid);
1956 afs_make_op_call(op, call, GFP_NOFS);
1960 * deliver reply data to an FS.FetchACL
1962 static int afs_deliver_fs_fetch_acl(struct afs_call *call)
1964 struct afs_operation *op = call->op;
1965 struct afs_vnode_param *vp = &op->file[0];
1966 struct afs_acl *acl;
1971 _enter("{%u}", call->unmarshall);
1973 switch (call->unmarshall) {
1975 afs_extract_to_tmp(call);
1979 /* extract the returned data length */
1981 ret = afs_extract_data(call, true);
1985 size = call->count2 = ntohl(call->tmp);
1986 size = round_up(size, 4);
1988 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
1992 acl->size = call->count2;
1993 afs_extract_begin(call, acl->data, size);
1997 /* extract the returned data */
1999 ret = afs_extract_data(call, true);
2003 afs_extract_to_buf(call, (21 + 6) * 4);
2007 /* extract the metadata */
2009 ret = afs_extract_data(call, false);
2014 xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
2015 xdr_decode_AFSVolSync(&bp, &op->volsync);
2023 _leave(" = 0 [done]");
2028 * FS.FetchACL operation type
2030 static const struct afs_call_type afs_RXFSFetchACL = {
2031 .name = "FS.FetchACL",
2032 .op = afs_FS_FetchACL,
2033 .deliver = afs_deliver_fs_fetch_acl,
2037 * Fetch the ACL for a file.
2039 void afs_fs_fetch_acl(struct afs_operation *op)
2041 struct afs_vnode_param *vp = &op->file[0];
2042 struct afs_call *call;
2045 _enter(",%x,{%llx:%llu},,",
2046 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
2048 call = afs_alloc_flat_call(op->net, &afs_RXFSFetchACL, 16, (21 + 6) * 4);
2050 return afs_op_nomem(op);
2052 /* marshall the parameters */
2054 bp[0] = htonl(FSFETCHACL);
2055 bp[1] = htonl(vp->fid.vid);
2056 bp[2] = htonl(vp->fid.vnode);
2057 bp[3] = htonl(vp->fid.unique);
2059 trace_afs_make_fs_call(call, &vp->fid);
2060 afs_make_op_call(op, call, GFP_KERNEL);
2064 * FS.StoreACL operation type
2066 static const struct afs_call_type afs_RXFSStoreACL = {
2067 .name = "FS.StoreACL",
2068 .op = afs_FS_StoreACL,
2069 .deliver = afs_deliver_fs_file_status_and_vol,
2070 .destructor = afs_flat_call_destructor,
2074 * Fetch the ACL for a file.
2076 void afs_fs_store_acl(struct afs_operation *op)
2078 struct afs_vnode_param *vp = &op->file[0];
2079 struct afs_call *call;
2080 const struct afs_acl *acl = op->acl;
2084 _enter(",%x,{%llx:%llu},,",
2085 key_serial(op->key), vp->fid.vid, vp->fid.vnode);
2087 size = round_up(acl->size, 4);
2088 call = afs_alloc_flat_call(op->net, &afs_RXFSStoreACL,
2089 5 * 4 + size, (21 + 6) * 4);
2091 return afs_op_nomem(op);
2093 /* marshall the parameters */
2095 bp[0] = htonl(FSSTOREACL);
2096 bp[1] = htonl(vp->fid.vid);
2097 bp[2] = htonl(vp->fid.vnode);
2098 bp[3] = htonl(vp->fid.unique);
2099 bp[4] = htonl(acl->size);
2100 memcpy(&bp[5], acl->data, acl->size);
2101 if (acl->size != size)
2102 memset((void *)&bp[5] + acl->size, 0, size - acl->size);
2104 trace_afs_make_fs_call(call, &vp->fid);
2105 afs_make_op_call(op, call, GFP_KERNEL);