1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* YFS File Server client stubs
4 * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
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>
16 #include "protocol_yfs.h"
18 static const struct afs_fid afs_zero_fid;
20 static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
22 call->cbi = afs_get_cb_interest(cbi);
25 #define xdr_size(x) (sizeof(*x) / sizeof(__be32))
27 static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid)
29 const struct yfs_xdr_YFSFid *x = (const void *)*_bp;
31 fid->vid = xdr_to_u64(x->volume);
32 fid->vnode = xdr_to_u64(x->vnode.lo);
33 fid->vnode_hi = ntohl(x->vnode.hi);
34 fid->unique = ntohl(x->vnode.unique);
38 static __be32 *xdr_encode_u32(__be32 *bp, u32 n)
44 static __be32 *xdr_encode_u64(__be32 *bp, u64 n)
46 struct yfs_xdr_u64 *x = (void *)bp;
49 return bp + xdr_size(x);
52 static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid)
54 struct yfs_xdr_YFSFid *x = (void *)bp;
56 x->volume = u64_to_xdr(fid->vid);
57 x->vnode.lo = u64_to_xdr(fid->vnode);
58 x->vnode.hi = htonl(fid->vnode_hi);
59 x->vnode.unique = htonl(fid->unique);
60 return bp + xdr_size(x);
63 static size_t xdr_strlen(unsigned int len)
65 return sizeof(__be32) + round_up(len, sizeof(__be32));
68 static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len)
70 bp = xdr_encode_u32(bp, len);
71 bp = memcpy(bp, p, len);
73 unsigned int pad = 4 - (len & 3);
75 memset((u8 *)bp + len, 0, pad);
79 return bp + len / sizeof(__be32);
82 static s64 linux_to_yfs_time(const struct timespec64 *t)
84 /* Convert to 100ns intervals. */
85 return (u64)t->tv_sec * 10000000 + t->tv_nsec/100;
88 static __be32 *xdr_encode_YFSStoreStatus_mode(__be32 *bp, mode_t mode)
90 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
92 x->mask = htonl(AFS_SET_MODE);
93 x->mode = htonl(mode & S_IALLUGO);
94 x->mtime_client = u64_to_xdr(0);
95 x->owner = u64_to_xdr(0);
96 x->group = u64_to_xdr(0);
97 return bp + xdr_size(x);
100 static __be32 *xdr_encode_YFSStoreStatus_mtime(__be32 *bp, const struct timespec64 *t)
102 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
103 s64 mtime = linux_to_yfs_time(t);
105 x->mask = htonl(AFS_SET_MTIME);
107 x->mtime_client = u64_to_xdr(mtime);
108 x->owner = u64_to_xdr(0);
109 x->group = u64_to_xdr(0);
110 return bp + xdr_size(x);
114 * Convert a signed 100ns-resolution 64-bit time into a timespec.
116 static struct timespec64 yfs_time_to_linux(s64 t)
118 struct timespec64 ts;
122 * Unfortunately can not use normal 64 bit division on 32 bit arch, but
123 * the alternative, do_div, does not work with negative numbers so have
124 * to special case them
128 ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
129 ts.tv_nsec = -ts.tv_nsec;
133 ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
140 static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr)
142 s64 t = xdr_to_u64(xdr);
144 return yfs_time_to_linux(t);
147 static void yfs_check_req(struct afs_call *call, __be32 *bp)
149 size_t len = (void *)bp - call->request;
151 if (len > call->request_size)
152 pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n",
153 call->type->name, len, call->request_size);
154 else if (len < call->request_size)
155 pr_warn("kAFS: %s: Request buffer underflow (%zu<%u)\n",
156 call->type->name, len, call->request_size);
160 * Dump a bad file status record.
162 static void xdr_dump_bad(const __be32 *bp)
167 pr_notice("YFS XDR: Bad status record\n");
168 for (i = 0; i < 5 * 4 * 4; i += 16) {
171 pr_notice("%03x: %08x %08x %08x %08x\n",
172 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
176 pr_notice("0x50: %08x\n", ntohl(x[0]));
180 * Decode a YFSFetchStatus block
182 static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
183 struct afs_call *call,
184 struct afs_status_cb *scb)
186 const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
187 struct afs_file_status *status = &scb->status;
190 status->abort_code = ntohl(xdr->abort_code);
191 if (status->abort_code != 0) {
192 if (status->abort_code == VNOVNODE)
194 scb->have_error = true;
198 type = ntohl(xdr->type);
202 case AFS_FTYPE_SYMLINK:
209 status->nlink = ntohl(xdr->nlink);
210 status->author = xdr_to_u64(xdr->author);
211 status->owner = xdr_to_u64(xdr->owner);
212 status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
213 status->anon_access = ntohl(xdr->anon_access);
214 status->mode = ntohl(xdr->mode) & S_IALLUGO;
215 status->group = xdr_to_u64(xdr->group);
216 status->lock_count = ntohl(xdr->lock_count);
218 status->mtime_client = xdr_to_time(xdr->mtime_client);
219 status->mtime_server = xdr_to_time(xdr->mtime_server);
220 status->size = xdr_to_u64(xdr->size);
221 status->data_version = xdr_to_u64(xdr->data_version);
222 scb->have_status = true;
224 *_bp += xdr_size(xdr);
229 return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
233 * Decode a YFSCallBack block
235 static void xdr_decode_YFSCallBack(const __be32 **_bp,
236 struct afs_call *call,
237 struct afs_status_cb *scb)
239 struct yfs_xdr_YFSCallBack *x = (void *)*_bp;
240 struct afs_callback *cb = &scb->callback;
243 cb_expiry = call->reply_time;
244 cb_expiry = ktime_add(cb_expiry, xdr_to_u64(x->expiration_time) * 100);
245 cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC);
251 * Decode a YFSVolSync block
253 static void xdr_decode_YFSVolSync(const __be32 **_bp,
254 struct afs_volsync *volsync)
256 struct yfs_xdr_YFSVolSync *x = (void *)*_bp;
260 creation = xdr_to_u64(x->vol_creation_date);
261 do_div(creation, 10 * 1000 * 1000);
262 volsync->creation = creation;
269 * Encode the requested attributes into a YFSStoreStatus block
271 static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr)
273 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
274 s64 mtime = 0, owner = 0, group = 0;
275 u32 mask = 0, mode = 0;
278 if (attr->ia_valid & ATTR_MTIME) {
279 mask |= AFS_SET_MTIME;
280 mtime = linux_to_yfs_time(&attr->ia_mtime);
283 if (attr->ia_valid & ATTR_UID) {
284 mask |= AFS_SET_OWNER;
285 owner = from_kuid(&init_user_ns, attr->ia_uid);
288 if (attr->ia_valid & ATTR_GID) {
289 mask |= AFS_SET_GROUP;
290 group = from_kgid(&init_user_ns, attr->ia_gid);
293 if (attr->ia_valid & ATTR_MODE) {
294 mask |= AFS_SET_MODE;
295 mode = attr->ia_mode & S_IALLUGO;
298 x->mask = htonl(mask);
299 x->mode = htonl(mode);
300 x->mtime_client = u64_to_xdr(mtime);
301 x->owner = u64_to_xdr(owner);
302 x->group = u64_to_xdr(group);
303 return bp + xdr_size(x);
307 * Decode a YFSFetchVolumeStatus block.
309 static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp,
310 struct afs_volume_status *vs)
312 const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp;
315 vs->vid = xdr_to_u64(x->vid);
316 vs->parent_id = xdr_to_u64(x->parent_id);
317 flags = ntohl(x->flags);
318 vs->online = flags & yfs_FVSOnline;
319 vs->in_service = flags & yfs_FVSInservice;
320 vs->blessed = flags & yfs_FVSBlessed;
321 vs->needs_salvage = flags & yfs_FVSNeedsSalvage;
322 vs->type = ntohl(x->type);
324 vs->max_quota = xdr_to_u64(x->max_quota);
325 vs->blocks_in_use = xdr_to_u64(x->blocks_in_use);
326 vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail);
327 vs->part_max_blocks = xdr_to_u64(x->part_max_blocks);
328 vs->vol_copy_date = xdr_to_u64(x->vol_copy_date);
329 vs->vol_backup_date = xdr_to_u64(x->vol_backup_date);
330 *_bp += sizeof(*x) / sizeof(__be32);
334 * Deliver a reply that's a status, callback and volsync.
336 static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call)
341 ret = afs_transfer_reply(call);
345 /* unmarshall the reply once we've received all of it */
347 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
350 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
351 xdr_decode_YFSVolSync(&bp, call->out_volsync);
353 _leave(" = 0 [done]");
358 * Deliver reply data to operations that just return a file status and a volume
361 static int yfs_deliver_status_and_volsync(struct afs_call *call)
366 ret = afs_transfer_reply(call);
371 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
374 xdr_decode_YFSVolSync(&bp, call->out_volsync);
376 _leave(" = 0 [done]");
381 * YFS.FetchStatus operation type
383 static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = {
384 .name = "YFS.FetchStatus(vnode)",
385 .op = yfs_FS_FetchStatus,
386 .deliver = yfs_deliver_fs_status_cb_and_volsync,
387 .destructor = afs_flat_call_destructor,
391 * Fetch the status information for a file.
393 int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
394 struct afs_volsync *volsync)
396 struct afs_vnode *vnode = fc->vnode;
397 struct afs_call *call;
398 struct afs_net *net = afs_v2net(vnode);
401 _enter(",%x,{%llx:%llu},,",
402 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
404 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus_vnode,
406 sizeof(struct yfs_xdr_YFSFid),
407 sizeof(struct yfs_xdr_YFSFetchStatus) +
408 sizeof(struct yfs_xdr_YFSCallBack) +
409 sizeof(struct yfs_xdr_YFSVolSync));
411 fc->ac.error = -ENOMEM;
417 call->out_volsync = volsync;
419 /* marshall the parameters */
421 bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
422 bp = xdr_encode_u32(bp, 0); /* RPC flags */
423 bp = xdr_encode_YFSFid(bp, &vnode->fid);
424 yfs_check_req(call, bp);
426 afs_use_fs_server(call, fc->cbi);
427 trace_afs_make_fs_call(call, &vnode->fid);
428 afs_set_fc_call(call, fc);
429 afs_make_call(&fc->ac, call, GFP_NOFS);
430 return afs_wait_for_call_to_complete(call, &fc->ac);
434 * Deliver reply data to an YFS.FetchData64.
436 static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
438 struct afs_read *req = call->read_request;
443 _enter("{%u,%zu/%llu}",
444 call->unmarshall, iov_iter_count(call->iter), req->actual_len);
446 switch (call->unmarshall) {
450 req->offset = req->pos & (PAGE_SIZE - 1);
451 afs_extract_to_tmp64(call);
455 /* extract the returned data length */
457 _debug("extract data length");
458 ret = afs_extract_data(call, true);
462 req->actual_len = be64_to_cpu(call->tmp64);
463 _debug("DATA length: %llu", req->actual_len);
464 req->remain = min(req->len, req->actual_len);
465 if (req->remain == 0)
471 ASSERTCMP(req->index, <, req->nr_pages);
472 if (req->remain > PAGE_SIZE - req->offset)
473 size = PAGE_SIZE - req->offset;
476 call->bvec[0].bv_len = size;
477 call->bvec[0].bv_offset = req->offset;
478 call->bvec[0].bv_page = req->pages[req->index];
479 iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size);
480 ASSERTCMP(size, <=, PAGE_SIZE);
483 /* extract the returned data */
485 _debug("extract data %zu/%llu",
486 iov_iter_count(call->iter), req->remain);
488 ret = afs_extract_data(call, true);
491 req->remain -= call->bvec[0].bv_len;
492 req->offset += call->bvec[0].bv_len;
493 ASSERTCMP(req->offset, <=, PAGE_SIZE);
494 if (req->offset == PAGE_SIZE) {
503 ASSERTCMP(req->remain, ==, 0);
504 if (req->actual_len <= req->len)
507 /* Discard any excess data the server gave us */
508 afs_extract_discard(call, req->actual_len - req->len);
509 call->unmarshall = 3;
513 _debug("extract discard %zu/%llu",
514 iov_iter_count(call->iter), req->actual_len - req->len);
516 ret = afs_extract_data(call, true);
521 call->unmarshall = 4;
522 afs_extract_to_buf(call,
523 sizeof(struct yfs_xdr_YFSFetchStatus) +
524 sizeof(struct yfs_xdr_YFSCallBack) +
525 sizeof(struct yfs_xdr_YFSVolSync));
528 /* extract the metadata */
530 ret = afs_extract_data(call, false);
535 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
538 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
539 xdr_decode_YFSVolSync(&bp, call->out_volsync);
541 req->data_version = call->out_scb->status.data_version;
542 req->file_size = call->out_scb->status.size;
551 for (; req->index < req->nr_pages; req->index++) {
552 if (req->offset < PAGE_SIZE)
553 zero_user_segment(req->pages[req->index],
554 req->offset, PAGE_SIZE);
560 _leave(" = 0 [done]");
564 static void yfs_fetch_data_destructor(struct afs_call *call)
566 afs_put_read(call->read_request);
567 afs_flat_call_destructor(call);
571 * YFS.FetchData64 operation type
573 static const struct afs_call_type yfs_RXYFSFetchData64 = {
574 .name = "YFS.FetchData64",
575 .op = yfs_FS_FetchData64,
576 .deliver = yfs_deliver_fs_fetch_data64,
577 .destructor = yfs_fetch_data_destructor,
581 * Fetch data from a file.
583 int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
584 struct afs_read *req)
586 struct afs_vnode *vnode = fc->vnode;
587 struct afs_call *call;
588 struct afs_net *net = afs_v2net(vnode);
591 _enter(",%x,{%llx:%llu},%llx,%llx",
592 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode,
595 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64,
597 sizeof(struct yfs_xdr_YFSFid) +
598 sizeof(struct yfs_xdr_u64) * 2,
599 sizeof(struct yfs_xdr_YFSFetchStatus) +
600 sizeof(struct yfs_xdr_YFSCallBack) +
601 sizeof(struct yfs_xdr_YFSVolSync));
607 call->out_volsync = NULL;
608 call->read_request = afs_get_read(req);
610 /* marshall the parameters */
612 bp = xdr_encode_u32(bp, YFSFETCHDATA64);
613 bp = xdr_encode_u32(bp, 0); /* RPC flags */
614 bp = xdr_encode_YFSFid(bp, &vnode->fid);
615 bp = xdr_encode_u64(bp, req->pos);
616 bp = xdr_encode_u64(bp, req->len);
617 yfs_check_req(call, bp);
619 afs_use_fs_server(call, fc->cbi);
620 trace_afs_make_fs_call(call, &vnode->fid);
621 afs_set_fc_call(call, fc);
622 afs_make_call(&fc->ac, call, GFP_NOFS);
623 return afs_wait_for_call_to_complete(call, &fc->ac);
627 * Deliver reply data for YFS.CreateFile or YFS.MakeDir.
629 static int yfs_deliver_fs_create_vnode(struct afs_call *call)
634 _enter("{%u}", call->unmarshall);
636 ret = afs_transfer_reply(call);
640 /* unmarshall the reply once we've received all of it */
642 xdr_decode_YFSFid(&bp, call->out_fid);
643 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
646 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
649 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
650 xdr_decode_YFSVolSync(&bp, call->out_volsync);
652 _leave(" = 0 [done]");
657 * FS.CreateFile and FS.MakeDir operation type
659 static const struct afs_call_type afs_RXFSCreateFile = {
660 .name = "YFS.CreateFile",
661 .op = yfs_FS_CreateFile,
662 .deliver = yfs_deliver_fs_create_vnode,
663 .destructor = afs_flat_call_destructor,
669 int yfs_fs_create_file(struct afs_fs_cursor *fc,
672 struct afs_status_cb *dvnode_scb,
673 struct afs_fid *newfid,
674 struct afs_status_cb *new_scb)
676 struct afs_vnode *dvnode = fc->vnode;
677 struct afs_call *call;
678 struct afs_net *net = afs_v2net(dvnode);
679 size_t namesz, reqsz, rplsz;
684 namesz = strlen(name);
685 reqsz = (sizeof(__be32) +
687 sizeof(struct yfs_xdr_YFSFid) +
689 sizeof(struct yfs_xdr_YFSStoreStatus) +
691 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
692 sizeof(struct yfs_xdr_YFSFetchStatus) +
693 sizeof(struct yfs_xdr_YFSFetchStatus) +
694 sizeof(struct yfs_xdr_YFSCallBack) +
695 sizeof(struct yfs_xdr_YFSVolSync));
697 call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz);
702 call->out_dir_scb = dvnode_scb;
703 call->out_fid = newfid;
704 call->out_scb = new_scb;
706 /* marshall the parameters */
708 bp = xdr_encode_u32(bp, YFSCREATEFILE);
709 bp = xdr_encode_u32(bp, 0); /* RPC flags */
710 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
711 bp = xdr_encode_string(bp, name, namesz);
712 bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
713 bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */
714 yfs_check_req(call, bp);
716 afs_use_fs_server(call, fc->cbi);
717 trace_afs_make_fs_call1(call, &dvnode->fid, name);
718 afs_set_fc_call(call, fc);
719 afs_make_call(&fc->ac, call, GFP_NOFS);
720 return afs_wait_for_call_to_complete(call, &fc->ac);
723 static const struct afs_call_type yfs_RXFSMakeDir = {
724 .name = "YFS.MakeDir",
725 .op = yfs_FS_MakeDir,
726 .deliver = yfs_deliver_fs_create_vnode,
727 .destructor = afs_flat_call_destructor,
733 int yfs_fs_make_dir(struct afs_fs_cursor *fc,
736 struct afs_status_cb *dvnode_scb,
737 struct afs_fid *newfid,
738 struct afs_status_cb *new_scb)
740 struct afs_vnode *dvnode = fc->vnode;
741 struct afs_call *call;
742 struct afs_net *net = afs_v2net(dvnode);
743 size_t namesz, reqsz, rplsz;
748 namesz = strlen(name);
749 reqsz = (sizeof(__be32) +
750 sizeof(struct yfs_xdr_RPCFlags) +
751 sizeof(struct yfs_xdr_YFSFid) +
753 sizeof(struct yfs_xdr_YFSStoreStatus));
754 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
755 sizeof(struct yfs_xdr_YFSFetchStatus) +
756 sizeof(struct yfs_xdr_YFSFetchStatus) +
757 sizeof(struct yfs_xdr_YFSCallBack) +
758 sizeof(struct yfs_xdr_YFSVolSync));
760 call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz);
765 call->out_dir_scb = dvnode_scb;
766 call->out_fid = newfid;
767 call->out_scb = new_scb;
769 /* marshall the parameters */
771 bp = xdr_encode_u32(bp, YFSMAKEDIR);
772 bp = xdr_encode_u32(bp, 0); /* RPC flags */
773 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
774 bp = xdr_encode_string(bp, name, namesz);
775 bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
776 yfs_check_req(call, bp);
778 afs_use_fs_server(call, fc->cbi);
779 trace_afs_make_fs_call1(call, &dvnode->fid, name);
780 afs_set_fc_call(call, fc);
781 afs_make_call(&fc->ac, call, GFP_NOFS);
782 return afs_wait_for_call_to_complete(call, &fc->ac);
786 * Deliver reply data to a YFS.RemoveFile2 operation.
788 static int yfs_deliver_fs_remove_file2(struct afs_call *call)
794 _enter("{%u}", call->unmarshall);
796 ret = afs_transfer_reply(call);
801 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
805 xdr_decode_YFSFid(&bp, &fid);
806 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
809 /* Was deleted if vnode->status.abort_code == VNOVNODE. */
811 xdr_decode_YFSVolSync(&bp, call->out_volsync);
816 * YFS.RemoveFile2 operation type.
818 static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
819 .name = "YFS.RemoveFile2",
820 .op = yfs_FS_RemoveFile2,
821 .deliver = yfs_deliver_fs_remove_file2,
822 .destructor = afs_flat_call_destructor,
826 * Remove a file and retrieve new file status.
828 int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
829 const char *name, struct afs_status_cb *dvnode_scb,
830 struct afs_status_cb *vnode_scb)
832 struct afs_vnode *dvnode = fc->vnode;
833 struct afs_call *call;
834 struct afs_net *net = afs_v2net(dvnode);
840 namesz = strlen(name);
842 call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2,
844 sizeof(struct yfs_xdr_RPCFlags) +
845 sizeof(struct yfs_xdr_YFSFid) +
847 sizeof(struct yfs_xdr_YFSFetchStatus) +
848 sizeof(struct yfs_xdr_YFSFid) +
849 sizeof(struct yfs_xdr_YFSFetchStatus) +
850 sizeof(struct yfs_xdr_YFSVolSync));
855 call->out_dir_scb = dvnode_scb;
856 call->out_scb = vnode_scb;
858 /* marshall the parameters */
860 bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
861 bp = xdr_encode_u32(bp, 0); /* RPC flags */
862 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
863 bp = xdr_encode_string(bp, name, namesz);
864 yfs_check_req(call, bp);
866 afs_use_fs_server(call, fc->cbi);
867 trace_afs_make_fs_call1(call, &dvnode->fid, name);
868 afs_set_fc_call(call, fc);
869 afs_make_call(&fc->ac, call, GFP_NOFS);
870 return afs_wait_for_call_to_complete(call, &fc->ac);
874 * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation.
876 static int yfs_deliver_fs_remove(struct afs_call *call)
881 _enter("{%u}", call->unmarshall);
883 ret = afs_transfer_reply(call);
888 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
892 xdr_decode_YFSVolSync(&bp, call->out_volsync);
897 * FS.RemoveDir and FS.RemoveFile operation types.
899 static const struct afs_call_type yfs_RXYFSRemoveFile = {
900 .name = "YFS.RemoveFile",
901 .op = yfs_FS_RemoveFile,
902 .deliver = yfs_deliver_fs_remove,
903 .destructor = afs_flat_call_destructor,
906 static const struct afs_call_type yfs_RXYFSRemoveDir = {
907 .name = "YFS.RemoveDir",
908 .op = yfs_FS_RemoveDir,
909 .deliver = yfs_deliver_fs_remove,
910 .destructor = afs_flat_call_destructor,
914 * remove a file or directory
916 int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
917 const char *name, bool isdir,
918 struct afs_status_cb *dvnode_scb)
920 struct afs_vnode *dvnode = fc->vnode;
921 struct afs_call *call;
922 struct afs_net *net = afs_v2net(dvnode);
928 namesz = strlen(name);
929 call = afs_alloc_flat_call(
930 net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile,
932 sizeof(struct yfs_xdr_RPCFlags) +
933 sizeof(struct yfs_xdr_YFSFid) +
935 sizeof(struct yfs_xdr_YFSFetchStatus) +
936 sizeof(struct yfs_xdr_YFSVolSync));
941 call->out_dir_scb = dvnode_scb;
943 /* marshall the parameters */
945 bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE);
946 bp = xdr_encode_u32(bp, 0); /* RPC flags */
947 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
948 bp = xdr_encode_string(bp, name, namesz);
949 yfs_check_req(call, bp);
951 afs_use_fs_server(call, fc->cbi);
952 trace_afs_make_fs_call1(call, &dvnode->fid, name);
953 afs_set_fc_call(call, fc);
954 afs_make_call(&fc->ac, call, GFP_NOFS);
955 return afs_wait_for_call_to_complete(call, &fc->ac);
959 * Deliver reply data to a YFS.Link operation.
961 static int yfs_deliver_fs_link(struct afs_call *call)
966 _enter("{%u}", call->unmarshall);
968 ret = afs_transfer_reply(call);
973 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
976 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
979 xdr_decode_YFSVolSync(&bp, call->out_volsync);
980 _leave(" = 0 [done]");
985 * YFS.Link operation type.
987 static const struct afs_call_type yfs_RXYFSLink = {
990 .deliver = yfs_deliver_fs_link,
991 .destructor = afs_flat_call_destructor,
997 int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
999 struct afs_status_cb *dvnode_scb,
1000 struct afs_status_cb *vnode_scb)
1002 struct afs_vnode *dvnode = fc->vnode;
1003 struct afs_call *call;
1004 struct afs_net *net = afs_v2net(vnode);
1010 namesz = strlen(name);
1011 call = afs_alloc_flat_call(net, &yfs_RXYFSLink,
1013 sizeof(struct yfs_xdr_RPCFlags) +
1014 sizeof(struct yfs_xdr_YFSFid) +
1015 xdr_strlen(namesz) +
1016 sizeof(struct yfs_xdr_YFSFid),
1017 sizeof(struct yfs_xdr_YFSFetchStatus) +
1018 sizeof(struct yfs_xdr_YFSFetchStatus) +
1019 sizeof(struct yfs_xdr_YFSVolSync));
1023 call->key = fc->key;
1024 call->out_dir_scb = dvnode_scb;
1025 call->out_scb = vnode_scb;
1027 /* marshall the parameters */
1029 bp = xdr_encode_u32(bp, YFSLINK);
1030 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1031 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
1032 bp = xdr_encode_string(bp, name, namesz);
1033 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1034 yfs_check_req(call, bp);
1036 afs_use_fs_server(call, fc->cbi);
1037 trace_afs_make_fs_call1(call, &vnode->fid, name);
1038 afs_set_fc_call(call, fc);
1039 afs_make_call(&fc->ac, call, GFP_NOFS);
1040 return afs_wait_for_call_to_complete(call, &fc->ac);
1044 * Deliver reply data to a YFS.Symlink operation.
1046 static int yfs_deliver_fs_symlink(struct afs_call *call)
1051 _enter("{%u}", call->unmarshall);
1053 ret = afs_transfer_reply(call);
1057 /* unmarshall the reply once we've received all of it */
1059 xdr_decode_YFSFid(&bp, call->out_fid);
1060 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
1063 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
1066 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1068 _leave(" = 0 [done]");
1073 * YFS.Symlink operation type
1075 static const struct afs_call_type yfs_RXYFSSymlink = {
1076 .name = "YFS.Symlink",
1077 .op = yfs_FS_Symlink,
1078 .deliver = yfs_deliver_fs_symlink,
1079 .destructor = afs_flat_call_destructor,
1083 * Create a symbolic link.
1085 int yfs_fs_symlink(struct afs_fs_cursor *fc,
1087 const char *contents,
1088 struct afs_status_cb *dvnode_scb,
1089 struct afs_fid *newfid,
1090 struct afs_status_cb *vnode_scb)
1092 struct afs_vnode *dvnode = fc->vnode;
1093 struct afs_call *call;
1094 struct afs_net *net = afs_v2net(dvnode);
1095 size_t namesz, contents_sz;
1100 namesz = strlen(name);
1101 contents_sz = strlen(contents);
1102 call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink,
1104 sizeof(struct yfs_xdr_RPCFlags) +
1105 sizeof(struct yfs_xdr_YFSFid) +
1106 xdr_strlen(namesz) +
1107 xdr_strlen(contents_sz) +
1108 sizeof(struct yfs_xdr_YFSStoreStatus),
1109 sizeof(struct yfs_xdr_YFSFid) +
1110 sizeof(struct yfs_xdr_YFSFetchStatus) +
1111 sizeof(struct yfs_xdr_YFSFetchStatus) +
1112 sizeof(struct yfs_xdr_YFSVolSync));
1116 call->key = fc->key;
1117 call->out_dir_scb = dvnode_scb;
1118 call->out_fid = newfid;
1119 call->out_scb = vnode_scb;
1121 /* marshall the parameters */
1123 bp = xdr_encode_u32(bp, YFSSYMLINK);
1124 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1125 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
1126 bp = xdr_encode_string(bp, name, namesz);
1127 bp = xdr_encode_string(bp, contents, contents_sz);
1128 bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO);
1129 yfs_check_req(call, bp);
1131 afs_use_fs_server(call, fc->cbi);
1132 trace_afs_make_fs_call1(call, &dvnode->fid, name);
1133 afs_set_fc_call(call, fc);
1134 afs_make_call(&fc->ac, call, GFP_NOFS);
1135 return afs_wait_for_call_to_complete(call, &fc->ac);
1139 * Deliver reply data to a YFS.Rename operation.
1141 static int yfs_deliver_fs_rename(struct afs_call *call)
1146 _enter("{%u}", call->unmarshall);
1148 ret = afs_transfer_reply(call);
1153 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
1156 if (call->out_dir_scb != call->out_scb) {
1157 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
1162 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1163 _leave(" = 0 [done]");
1168 * YFS.Rename operation type
1170 static const struct afs_call_type yfs_RXYFSRename = {
1171 .name = "FS.Rename",
1172 .op = yfs_FS_Rename,
1173 .deliver = yfs_deliver_fs_rename,
1174 .destructor = afs_flat_call_destructor,
1178 * Rename a file or directory.
1180 int yfs_fs_rename(struct afs_fs_cursor *fc,
1181 const char *orig_name,
1182 struct afs_vnode *new_dvnode,
1183 const char *new_name,
1184 struct afs_status_cb *orig_dvnode_scb,
1185 struct afs_status_cb *new_dvnode_scb)
1187 struct afs_vnode *orig_dvnode = fc->vnode;
1188 struct afs_call *call;
1189 struct afs_net *net = afs_v2net(orig_dvnode);
1190 size_t o_namesz, n_namesz;
1195 o_namesz = strlen(orig_name);
1196 n_namesz = strlen(new_name);
1197 call = afs_alloc_flat_call(net, &yfs_RXYFSRename,
1199 sizeof(struct yfs_xdr_RPCFlags) +
1200 sizeof(struct yfs_xdr_YFSFid) +
1201 xdr_strlen(o_namesz) +
1202 sizeof(struct yfs_xdr_YFSFid) +
1203 xdr_strlen(n_namesz),
1204 sizeof(struct yfs_xdr_YFSFetchStatus) +
1205 sizeof(struct yfs_xdr_YFSFetchStatus) +
1206 sizeof(struct yfs_xdr_YFSVolSync));
1210 call->key = fc->key;
1211 call->out_dir_scb = orig_dvnode_scb;
1212 call->out_scb = new_dvnode_scb;
1214 /* marshall the parameters */
1216 bp = xdr_encode_u32(bp, YFSRENAME);
1217 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1218 bp = xdr_encode_YFSFid(bp, &orig_dvnode->fid);
1219 bp = xdr_encode_string(bp, orig_name, o_namesz);
1220 bp = xdr_encode_YFSFid(bp, &new_dvnode->fid);
1221 bp = xdr_encode_string(bp, new_name, n_namesz);
1222 yfs_check_req(call, bp);
1224 afs_use_fs_server(call, fc->cbi);
1225 trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name);
1226 afs_set_fc_call(call, fc);
1227 afs_make_call(&fc->ac, call, GFP_NOFS);
1228 return afs_wait_for_call_to_complete(call, &fc->ac);
1232 * YFS.StoreData64 operation type.
1234 static const struct afs_call_type yfs_RXYFSStoreData64 = {
1235 .name = "YFS.StoreData64",
1236 .op = yfs_FS_StoreData64,
1237 .deliver = yfs_deliver_status_and_volsync,
1238 .destructor = afs_flat_call_destructor,
1242 * Store a set of pages to a large file.
1244 int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
1245 pgoff_t first, pgoff_t last,
1246 unsigned offset, unsigned to,
1247 struct afs_status_cb *scb)
1249 struct afs_vnode *vnode = fc->vnode;
1250 struct afs_call *call;
1251 struct afs_net *net = afs_v2net(vnode);
1252 loff_t size, pos, i_size;
1255 _enter(",%x,{%llx:%llu},,",
1256 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1258 size = (loff_t)to - (loff_t)offset;
1260 size += (loff_t)(last - first) << PAGE_SHIFT;
1261 pos = (loff_t)first << PAGE_SHIFT;
1264 i_size = i_size_read(&vnode->vfs_inode);
1265 if (pos + size > i_size)
1266 i_size = size + pos;
1268 _debug("size %llx, at %llx, i_size %llx",
1269 (unsigned long long)size, (unsigned long long)pos,
1270 (unsigned long long)i_size);
1272 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64,
1275 sizeof(struct yfs_xdr_YFSFid) +
1276 sizeof(struct yfs_xdr_YFSStoreStatus) +
1277 sizeof(struct yfs_xdr_u64) * 3,
1278 sizeof(struct yfs_xdr_YFSFetchStatus) +
1279 sizeof(struct yfs_xdr_YFSVolSync));
1283 call->key = fc->key;
1284 call->mapping = mapping;
1285 call->first = first;
1287 call->first_offset = offset;
1289 call->send_pages = true;
1290 call->out_scb = scb;
1292 /* marshall the parameters */
1294 bp = xdr_encode_u32(bp, YFSSTOREDATA64);
1295 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1296 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1297 bp = xdr_encode_YFSStoreStatus_mtime(bp, &vnode->vfs_inode.i_mtime);
1298 bp = xdr_encode_u64(bp, pos);
1299 bp = xdr_encode_u64(bp, size);
1300 bp = xdr_encode_u64(bp, i_size);
1301 yfs_check_req(call, bp);
1303 afs_use_fs_server(call, fc->cbi);
1304 trace_afs_make_fs_call(call, &vnode->fid);
1305 afs_set_fc_call(call, fc);
1306 afs_make_call(&fc->ac, call, GFP_NOFS);
1307 return afs_wait_for_call_to_complete(call, &fc->ac);
1311 * YFS.StoreStatus operation type
1313 static const struct afs_call_type yfs_RXYFSStoreStatus = {
1314 .name = "YFS.StoreStatus",
1315 .op = yfs_FS_StoreStatus,
1316 .deliver = yfs_deliver_status_and_volsync,
1317 .destructor = afs_flat_call_destructor,
1320 static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = {
1321 .name = "YFS.StoreData64",
1322 .op = yfs_FS_StoreData64,
1323 .deliver = yfs_deliver_status_and_volsync,
1324 .destructor = afs_flat_call_destructor,
1328 * Set the attributes on a file, using YFS.StoreData64 rather than
1329 * YFS.StoreStatus so as to alter the file size also.
1331 static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr,
1332 struct afs_status_cb *scb)
1334 struct afs_vnode *vnode = fc->vnode;
1335 struct afs_call *call;
1336 struct afs_net *net = afs_v2net(vnode);
1339 _enter(",%x,{%llx:%llu},,",
1340 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1342 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64_as_Status,
1343 sizeof(__be32) * 2 +
1344 sizeof(struct yfs_xdr_YFSFid) +
1345 sizeof(struct yfs_xdr_YFSStoreStatus) +
1346 sizeof(struct yfs_xdr_u64) * 3,
1347 sizeof(struct yfs_xdr_YFSFetchStatus) +
1348 sizeof(struct yfs_xdr_YFSVolSync));
1352 call->key = fc->key;
1353 call->out_scb = scb;
1355 /* marshall the parameters */
1357 bp = xdr_encode_u32(bp, YFSSTOREDATA64);
1358 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1359 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1360 bp = xdr_encode_YFS_StoreStatus(bp, attr);
1361 bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */
1362 bp = xdr_encode_u64(bp, 0); /* size of write */
1363 bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */
1364 yfs_check_req(call, bp);
1366 afs_use_fs_server(call, fc->cbi);
1367 trace_afs_make_fs_call(call, &vnode->fid);
1368 afs_set_fc_call(call, fc);
1369 afs_make_call(&fc->ac, call, GFP_NOFS);
1370 return afs_wait_for_call_to_complete(call, &fc->ac);
1374 * Set the attributes on a file, using YFS.StoreData64 if there's a change in
1375 * file size, and YFS.StoreStatus otherwise.
1377 int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr,
1378 struct afs_status_cb *scb)
1380 struct afs_vnode *vnode = fc->vnode;
1381 struct afs_call *call;
1382 struct afs_net *net = afs_v2net(vnode);
1385 if (attr->ia_valid & ATTR_SIZE)
1386 return yfs_fs_setattr_size(fc, attr, scb);
1388 _enter(",%x,{%llx:%llu},,",
1389 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1391 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus,
1392 sizeof(__be32) * 2 +
1393 sizeof(struct yfs_xdr_YFSFid) +
1394 sizeof(struct yfs_xdr_YFSStoreStatus),
1395 sizeof(struct yfs_xdr_YFSFetchStatus) +
1396 sizeof(struct yfs_xdr_YFSVolSync));
1400 call->key = fc->key;
1401 call->out_scb = scb;
1403 /* marshall the parameters */
1405 bp = xdr_encode_u32(bp, YFSSTORESTATUS);
1406 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1407 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1408 bp = xdr_encode_YFS_StoreStatus(bp, attr);
1409 yfs_check_req(call, bp);
1411 afs_use_fs_server(call, fc->cbi);
1412 trace_afs_make_fs_call(call, &vnode->fid);
1413 afs_set_fc_call(call, fc);
1414 afs_make_call(&fc->ac, call, GFP_NOFS);
1415 return afs_wait_for_call_to_complete(call, &fc->ac);
1419 * Deliver reply data to a YFS.GetVolumeStatus operation.
1421 static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
1428 _enter("{%u}", call->unmarshall);
1430 switch (call->unmarshall) {
1433 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus));
1436 /* extract the returned status record */
1438 _debug("extract status");
1439 ret = afs_extract_data(call, true);
1444 xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus);
1446 afs_extract_to_tmp(call);
1449 /* extract the volume name length */
1451 ret = afs_extract_data(call, true);
1455 call->count = ntohl(call->tmp);
1456 _debug("volname length: %u", call->count);
1457 if (call->count >= AFSNAMEMAX)
1458 return afs_protocol_error(call, -EBADMSG,
1459 afs_eproto_volname_len);
1460 size = (call->count + 3) & ~3; /* It's padded */
1461 afs_extract_to_buf(call, size);
1465 /* extract the volume name */
1467 _debug("extract volname");
1468 ret = afs_extract_data(call, true);
1474 _debug("volname '%s'", p);
1475 afs_extract_to_tmp(call);
1479 /* extract the offline message length */
1481 ret = afs_extract_data(call, true);
1485 call->count = ntohl(call->tmp);
1486 _debug("offline msg length: %u", call->count);
1487 if (call->count >= AFSNAMEMAX)
1488 return afs_protocol_error(call, -EBADMSG,
1489 afs_eproto_offline_msg_len);
1490 size = (call->count + 3) & ~3; /* It's padded */
1491 afs_extract_to_buf(call, size);
1495 /* extract the offline message */
1497 _debug("extract offline");
1498 ret = afs_extract_data(call, true);
1504 _debug("offline '%s'", p);
1506 afs_extract_to_tmp(call);
1510 /* extract the message of the day length */
1512 ret = afs_extract_data(call, true);
1516 call->count = ntohl(call->tmp);
1517 _debug("motd length: %u", call->count);
1518 if (call->count >= AFSNAMEMAX)
1519 return afs_protocol_error(call, -EBADMSG,
1520 afs_eproto_motd_len);
1521 size = (call->count + 3) & ~3; /* It's padded */
1522 afs_extract_to_buf(call, size);
1526 /* extract the message of the day */
1528 _debug("extract motd");
1529 ret = afs_extract_data(call, false);
1535 _debug("motd '%s'", p);
1544 _leave(" = 0 [done]");
1549 * YFS.GetVolumeStatus operation type
1551 static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
1552 .name = "YFS.GetVolumeStatus",
1553 .op = yfs_FS_GetVolumeStatus,
1554 .deliver = yfs_deliver_fs_get_volume_status,
1555 .destructor = afs_flat_call_destructor,
1559 * fetch the status of a volume
1561 int yfs_fs_get_volume_status(struct afs_fs_cursor *fc,
1562 struct afs_volume_status *vs)
1564 struct afs_vnode *vnode = fc->vnode;
1565 struct afs_call *call;
1566 struct afs_net *net = afs_v2net(vnode);
1571 call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus,
1572 sizeof(__be32) * 2 +
1573 sizeof(struct yfs_xdr_u64),
1575 sizeof(struct yfs_xdr_YFSFetchVolumeStatus) +
1581 call->key = fc->key;
1582 call->out_volstatus = vs;
1584 /* marshall the parameters */
1586 bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
1587 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1588 bp = xdr_encode_u64(bp, vnode->fid.vid);
1589 yfs_check_req(call, bp);
1591 afs_use_fs_server(call, fc->cbi);
1592 trace_afs_make_fs_call(call, &vnode->fid);
1593 afs_set_fc_call(call, fc);
1594 afs_make_call(&fc->ac, call, GFP_NOFS);
1595 return afs_wait_for_call_to_complete(call, &fc->ac);
1599 * YFS.SetLock operation type
1601 static const struct afs_call_type yfs_RXYFSSetLock = {
1602 .name = "YFS.SetLock",
1603 .op = yfs_FS_SetLock,
1604 .deliver = yfs_deliver_status_and_volsync,
1605 .done = afs_lock_op_done,
1606 .destructor = afs_flat_call_destructor,
1610 * YFS.ExtendLock operation type
1612 static const struct afs_call_type yfs_RXYFSExtendLock = {
1613 .name = "YFS.ExtendLock",
1614 .op = yfs_FS_ExtendLock,
1615 .deliver = yfs_deliver_status_and_volsync,
1616 .done = afs_lock_op_done,
1617 .destructor = afs_flat_call_destructor,
1621 * YFS.ReleaseLock operation type
1623 static const struct afs_call_type yfs_RXYFSReleaseLock = {
1624 .name = "YFS.ReleaseLock",
1625 .op = yfs_FS_ReleaseLock,
1626 .deliver = yfs_deliver_status_and_volsync,
1627 .destructor = afs_flat_call_destructor,
1631 * Set a lock on a file
1633 int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type,
1634 struct afs_status_cb *scb)
1636 struct afs_vnode *vnode = fc->vnode;
1637 struct afs_call *call;
1638 struct afs_net *net = afs_v2net(vnode);
1643 call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock,
1644 sizeof(__be32) * 2 +
1645 sizeof(struct yfs_xdr_YFSFid) +
1647 sizeof(struct yfs_xdr_YFSFetchStatus) +
1648 sizeof(struct yfs_xdr_YFSVolSync));
1652 call->key = fc->key;
1653 call->lvnode = vnode;
1654 call->out_scb = scb;
1656 /* marshall the parameters */
1658 bp = xdr_encode_u32(bp, YFSSETLOCK);
1659 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1660 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1661 bp = xdr_encode_u32(bp, type);
1662 yfs_check_req(call, bp);
1664 afs_use_fs_server(call, fc->cbi);
1665 trace_afs_make_fs_calli(call, &vnode->fid, type);
1666 afs_set_fc_call(call, fc);
1667 afs_make_call(&fc->ac, call, GFP_NOFS);
1668 return afs_wait_for_call_to_complete(call, &fc->ac);
1672 * extend a lock on a file
1674 int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1676 struct afs_vnode *vnode = fc->vnode;
1677 struct afs_call *call;
1678 struct afs_net *net = afs_v2net(vnode);
1683 call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock,
1684 sizeof(__be32) * 2 +
1685 sizeof(struct yfs_xdr_YFSFid),
1686 sizeof(struct yfs_xdr_YFSFetchStatus) +
1687 sizeof(struct yfs_xdr_YFSVolSync));
1691 call->key = fc->key;
1692 call->lvnode = vnode;
1693 call->out_scb = scb;
1695 /* marshall the parameters */
1697 bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
1698 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1699 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1700 yfs_check_req(call, bp);
1702 afs_use_fs_server(call, fc->cbi);
1703 trace_afs_make_fs_call(call, &vnode->fid);
1704 afs_set_fc_call(call, fc);
1705 afs_make_call(&fc->ac, call, GFP_NOFS);
1706 return afs_wait_for_call_to_complete(call, &fc->ac);
1710 * release a lock on a file
1712 int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1714 struct afs_vnode *vnode = fc->vnode;
1715 struct afs_call *call;
1716 struct afs_net *net = afs_v2net(vnode);
1721 call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock,
1722 sizeof(__be32) * 2 +
1723 sizeof(struct yfs_xdr_YFSFid),
1724 sizeof(struct yfs_xdr_YFSFetchStatus) +
1725 sizeof(struct yfs_xdr_YFSVolSync));
1729 call->key = fc->key;
1730 call->lvnode = vnode;
1731 call->out_scb = scb;
1733 /* marshall the parameters */
1735 bp = xdr_encode_u32(bp, YFSRELEASELOCK);
1736 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1737 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1738 yfs_check_req(call, bp);
1740 afs_use_fs_server(call, fc->cbi);
1741 trace_afs_make_fs_call(call, &vnode->fid);
1742 afs_set_fc_call(call, fc);
1743 afs_make_call(&fc->ac, call, GFP_NOFS);
1744 return afs_wait_for_call_to_complete(call, &fc->ac);
1748 * YFS.FetchStatus operation type
1750 static const struct afs_call_type yfs_RXYFSFetchStatus = {
1751 .name = "YFS.FetchStatus",
1752 .op = yfs_FS_FetchStatus,
1753 .deliver = yfs_deliver_fs_status_cb_and_volsync,
1754 .destructor = afs_flat_call_destructor,
1758 * Fetch the status information for a fid without needing a vnode handle.
1760 int yfs_fs_fetch_status(struct afs_fs_cursor *fc,
1761 struct afs_net *net,
1762 struct afs_fid *fid,
1763 struct afs_status_cb *scb,
1764 struct afs_volsync *volsync)
1766 struct afs_call *call;
1769 _enter(",%x,{%llx:%llu},,",
1770 key_serial(fc->key), fid->vid, fid->vnode);
1772 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus,
1773 sizeof(__be32) * 2 +
1774 sizeof(struct yfs_xdr_YFSFid),
1775 sizeof(struct yfs_xdr_YFSFetchStatus) +
1776 sizeof(struct yfs_xdr_YFSCallBack) +
1777 sizeof(struct yfs_xdr_YFSVolSync));
1779 fc->ac.error = -ENOMEM;
1783 call->key = fc->key;
1784 call->out_scb = scb;
1785 call->out_volsync = volsync;
1787 /* marshall the parameters */
1789 bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
1790 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1791 bp = xdr_encode_YFSFid(bp, fid);
1792 yfs_check_req(call, bp);
1794 afs_use_fs_server(call, fc->cbi);
1795 trace_afs_make_fs_call(call, fid);
1796 afs_set_fc_call(call, fc);
1797 afs_make_call(&fc->ac, call, GFP_NOFS);
1798 return afs_wait_for_call_to_complete(call, &fc->ac);
1802 * Deliver reply data to an YFS.InlineBulkStatus call
1804 static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
1806 struct afs_status_cb *scb;
1811 _enter("{%u}", call->unmarshall);
1813 switch (call->unmarshall) {
1815 afs_extract_to_tmp(call);
1819 /* Extract the file status count and array in two steps */
1821 _debug("extract status count");
1822 ret = afs_extract_data(call, true);
1826 tmp = ntohl(call->tmp);
1827 _debug("status count: %u/%u", tmp, call->count2);
1828 if (tmp != call->count2)
1829 return afs_protocol_error(call, -EBADMSG,
1830 afs_eproto_ibulkst_count);
1835 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus));
1839 _debug("extract status array %u", call->count);
1840 ret = afs_extract_data(call, true);
1845 scb = &call->out_scb[call->count];
1846 ret = xdr_decode_YFSFetchStatus(&bp, call, scb);
1851 if (call->count < call->count2)
1856 afs_extract_to_tmp(call);
1859 /* Extract the callback count and array in two steps */
1861 _debug("extract CB count");
1862 ret = afs_extract_data(call, true);
1866 tmp = ntohl(call->tmp);
1867 _debug("CB count: %u", tmp);
1868 if (tmp != call->count2)
1869 return afs_protocol_error(call, -EBADMSG,
1870 afs_eproto_ibulkst_cb_count);
1874 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack));
1878 _debug("extract CB array");
1879 ret = afs_extract_data(call, true);
1883 _debug("unmarshall CB array");
1885 scb = &call->out_scb[call->count];
1886 xdr_decode_YFSCallBack(&bp, call, scb);
1888 if (call->count < call->count2)
1891 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
1896 ret = afs_extract_data(call, false);
1901 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1910 _leave(" = 0 [done]");
1915 * FS.InlineBulkStatus operation type
1917 static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
1918 .name = "YFS.InlineBulkStatus",
1919 .op = yfs_FS_InlineBulkStatus,
1920 .deliver = yfs_deliver_fs_inline_bulk_status,
1921 .destructor = afs_flat_call_destructor,
1925 * Fetch the status information for up to 1024 files
1927 int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
1928 struct afs_net *net,
1929 struct afs_fid *fids,
1930 struct afs_status_cb *statuses,
1931 unsigned int nr_fids,
1932 struct afs_volsync *volsync)
1934 struct afs_call *call;
1938 _enter(",%x,{%llx:%llu},%u",
1939 key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
1941 call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus,
1945 sizeof(struct yfs_xdr_YFSFid) * nr_fids,
1946 sizeof(struct yfs_xdr_YFSFetchStatus));
1948 fc->ac.error = -ENOMEM;
1952 call->key = fc->key;
1953 call->out_scb = statuses;
1954 call->out_volsync = volsync;
1955 call->count2 = nr_fids;
1957 /* marshall the parameters */
1959 bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
1960 bp = xdr_encode_u32(bp, 0); /* RPCFlags */
1961 bp = xdr_encode_u32(bp, nr_fids);
1962 for (i = 0; i < nr_fids; i++)
1963 bp = xdr_encode_YFSFid(bp, &fids[i]);
1964 yfs_check_req(call, bp);
1966 afs_use_fs_server(call, fc->cbi);
1967 trace_afs_make_fs_call(call, &fids[0]);
1968 afs_set_fc_call(call, fc);
1969 afs_make_call(&fc->ac, call, GFP_NOFS);
1970 return afs_wait_for_call_to_complete(call, &fc->ac);
1974 * Deliver reply data to an YFS.FetchOpaqueACL.
1976 static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
1978 struct yfs_acl *yacl = call->out_yacl;
1979 struct afs_acl *acl;
1984 _enter("{%u}", call->unmarshall);
1986 switch (call->unmarshall) {
1988 afs_extract_to_tmp(call);
1992 /* Extract the file ACL length */
1994 ret = afs_extract_data(call, true);
1998 size = call->count2 = ntohl(call->tmp);
1999 size = round_up(size, 4);
2001 if (yacl->flags & YFS_ACL_WANT_ACL) {
2002 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2006 acl->size = call->count2;
2007 afs_extract_begin(call, acl->data, size);
2009 afs_extract_discard(call, size);
2014 /* Extract the file ACL */
2016 ret = afs_extract_data(call, true);
2020 afs_extract_to_tmp(call);
2024 /* Extract the volume ACL length */
2026 ret = afs_extract_data(call, true);
2030 size = call->count2 = ntohl(call->tmp);
2031 size = round_up(size, 4);
2033 if (yacl->flags & YFS_ACL_WANT_VOL_ACL) {
2034 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2037 yacl->vol_acl = acl;
2038 acl->size = call->count2;
2039 afs_extract_begin(call, acl->data, size);
2041 afs_extract_discard(call, size);
2046 /* Extract the volume ACL */
2048 ret = afs_extract_data(call, true);
2052 afs_extract_to_buf(call,
2053 sizeof(__be32) * 2 +
2054 sizeof(struct yfs_xdr_YFSFetchStatus) +
2055 sizeof(struct yfs_xdr_YFSVolSync));
2059 /* extract the metadata */
2061 ret = afs_extract_data(call, false);
2066 yacl->inherit_flag = ntohl(*bp++);
2067 yacl->num_cleaned = ntohl(*bp++);
2068 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
2071 xdr_decode_YFSVolSync(&bp, call->out_volsync);
2080 _leave(" = 0 [done]");
2084 void yfs_free_opaque_acl(struct yfs_acl *yacl)
2088 kfree(yacl->vol_acl);
2094 * YFS.FetchOpaqueACL operation type
2096 static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = {
2097 .name = "YFS.FetchOpaqueACL",
2098 .op = yfs_FS_FetchOpaqueACL,
2099 .deliver = yfs_deliver_fs_fetch_opaque_acl,
2100 .destructor = afs_flat_call_destructor,
2104 * Fetch the YFS advanced ACLs for a file.
2106 struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc,
2107 struct yfs_acl *yacl,
2108 struct afs_status_cb *scb)
2110 struct afs_vnode *vnode = fc->vnode;
2111 struct afs_call *call;
2112 struct afs_net *net = afs_v2net(vnode);
2115 _enter(",%x,{%llx:%llu},,",
2116 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2118 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL,
2119 sizeof(__be32) * 2 +
2120 sizeof(struct yfs_xdr_YFSFid),
2121 sizeof(__be32) * 2 +
2122 sizeof(struct yfs_xdr_YFSFetchStatus) +
2123 sizeof(struct yfs_xdr_YFSVolSync));
2125 fc->ac.error = -ENOMEM;
2126 return ERR_PTR(-ENOMEM);
2129 call->key = fc->key;
2130 call->out_yacl = yacl;
2131 call->out_scb = scb;
2132 call->out_volsync = NULL;
2134 /* marshall the parameters */
2136 bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL);
2137 bp = xdr_encode_u32(bp, 0); /* RPC flags */
2138 bp = xdr_encode_YFSFid(bp, &vnode->fid);
2139 yfs_check_req(call, bp);
2141 afs_use_fs_server(call, fc->cbi);
2142 trace_afs_make_fs_call(call, &vnode->fid);
2143 afs_make_call(&fc->ac, call, GFP_KERNEL);
2144 return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac);
2148 * YFS.StoreOpaqueACL2 operation type
2150 static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = {
2151 .name = "YFS.StoreOpaqueACL2",
2152 .op = yfs_FS_StoreOpaqueACL2,
2153 .deliver = yfs_deliver_status_and_volsync,
2154 .destructor = afs_flat_call_destructor,
2158 * Fetch the YFS ACL for a file.
2160 int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl,
2161 struct afs_status_cb *scb)
2163 struct afs_vnode *vnode = fc->vnode;
2164 struct afs_call *call;
2165 struct afs_net *net = afs_v2net(vnode);
2169 _enter(",%x,{%llx:%llu},,",
2170 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2172 size = round_up(acl->size, 4);
2173 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreOpaqueACL2,
2174 sizeof(__be32) * 2 +
2175 sizeof(struct yfs_xdr_YFSFid) +
2176 sizeof(__be32) + size,
2177 sizeof(struct yfs_xdr_YFSFetchStatus) +
2178 sizeof(struct yfs_xdr_YFSVolSync));
2180 fc->ac.error = -ENOMEM;
2184 call->key = fc->key;
2185 call->out_scb = scb;
2186 call->out_volsync = NULL;
2188 /* marshall the parameters */
2190 bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2);
2191 bp = xdr_encode_u32(bp, 0); /* RPC flags */
2192 bp = xdr_encode_YFSFid(bp, &vnode->fid);
2193 bp = xdr_encode_u32(bp, acl->size);
2194 memcpy(bp, acl->data, acl->size);
2195 if (acl->size != size)
2196 memset((void *)bp + acl->size, 0, size - acl->size);
2197 yfs_check_req(call, bp);
2199 trace_afs_make_fs_call(call, &vnode->fid);
2200 afs_make_call(&fc->ac, call, GFP_KERNEL);
2201 return afs_wait_for_call_to_complete(call, &fc->ac);