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 < 6 * 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("0x60: %08x %08x\n", ntohl(x[0]), ntohl(x[1]));
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;
191 status->abort_code = ntohl(xdr->abort_code);
192 if (status->abort_code != 0) {
193 if (status->abort_code == VNOVNODE)
195 scb->have_error = true;
199 type = ntohl(xdr->type);
203 case AFS_FTYPE_SYMLINK:
210 status->nlink = ntohl(xdr->nlink);
211 status->author = xdr_to_u64(xdr->author);
212 status->owner = xdr_to_u64(xdr->owner);
213 status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
214 status->anon_access = ntohl(xdr->anon_access);
215 status->mode = ntohl(xdr->mode) & S_IALLUGO;
216 status->group = xdr_to_u64(xdr->group);
217 status->lock_count = ntohl(xdr->lock_count);
219 status->mtime_client = xdr_to_time(xdr->mtime_client);
220 status->mtime_server = xdr_to_time(xdr->mtime_server);
221 status->size = xdr_to_u64(xdr->size);
222 status->data_version = xdr_to_u64(xdr->data_version);
223 scb->have_status = true;
227 *_bp += xdr_size(xdr);
232 ret = afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
237 * Decode a YFSCallBack block
239 static void xdr_decode_YFSCallBack(const __be32 **_bp,
240 struct afs_call *call,
241 struct afs_status_cb *scb)
243 struct yfs_xdr_YFSCallBack *x = (void *)*_bp;
244 struct afs_callback *cb = &scb->callback;
247 cb_expiry = call->reply_time;
248 cb_expiry = ktime_add(cb_expiry, xdr_to_u64(x->expiration_time) * 100);
249 cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC);
255 * Decode a YFSVolSync block
257 static void xdr_decode_YFSVolSync(const __be32 **_bp,
258 struct afs_volsync *volsync)
260 struct yfs_xdr_YFSVolSync *x = (void *)*_bp;
264 creation = xdr_to_u64(x->vol_creation_date);
265 do_div(creation, 10 * 1000 * 1000);
266 volsync->creation = creation;
273 * Encode the requested attributes into a YFSStoreStatus block
275 static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr)
277 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
278 s64 mtime = 0, owner = 0, group = 0;
279 u32 mask = 0, mode = 0;
282 if (attr->ia_valid & ATTR_MTIME) {
283 mask |= AFS_SET_MTIME;
284 mtime = linux_to_yfs_time(&attr->ia_mtime);
287 if (attr->ia_valid & ATTR_UID) {
288 mask |= AFS_SET_OWNER;
289 owner = from_kuid(&init_user_ns, attr->ia_uid);
292 if (attr->ia_valid & ATTR_GID) {
293 mask |= AFS_SET_GROUP;
294 group = from_kgid(&init_user_ns, attr->ia_gid);
297 if (attr->ia_valid & ATTR_MODE) {
298 mask |= AFS_SET_MODE;
299 mode = attr->ia_mode & S_IALLUGO;
302 x->mask = htonl(mask);
303 x->mode = htonl(mode);
304 x->mtime_client = u64_to_xdr(mtime);
305 x->owner = u64_to_xdr(owner);
306 x->group = u64_to_xdr(group);
307 return bp + xdr_size(x);
311 * Decode a YFSFetchVolumeStatus block.
313 static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp,
314 struct afs_volume_status *vs)
316 const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp;
319 vs->vid = xdr_to_u64(x->vid);
320 vs->parent_id = xdr_to_u64(x->parent_id);
321 flags = ntohl(x->flags);
322 vs->online = flags & yfs_FVSOnline;
323 vs->in_service = flags & yfs_FVSInservice;
324 vs->blessed = flags & yfs_FVSBlessed;
325 vs->needs_salvage = flags & yfs_FVSNeedsSalvage;
326 vs->type = ntohl(x->type);
328 vs->max_quota = xdr_to_u64(x->max_quota);
329 vs->blocks_in_use = xdr_to_u64(x->blocks_in_use);
330 vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail);
331 vs->part_max_blocks = xdr_to_u64(x->part_max_blocks);
332 vs->vol_copy_date = xdr_to_u64(x->vol_copy_date);
333 vs->vol_backup_date = xdr_to_u64(x->vol_backup_date);
334 *_bp += sizeof(*x) / sizeof(__be32);
338 * Deliver a reply that's a status, callback and volsync.
340 static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call)
345 ret = afs_transfer_reply(call);
349 /* unmarshall the reply once we've received all of it */
351 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
354 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
355 xdr_decode_YFSVolSync(&bp, call->out_volsync);
357 _leave(" = 0 [done]");
362 * Deliver reply data to operations that just return a file status and a volume
365 static int yfs_deliver_status_and_volsync(struct afs_call *call)
370 ret = afs_transfer_reply(call);
375 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
378 xdr_decode_YFSVolSync(&bp, call->out_volsync);
380 _leave(" = 0 [done]");
385 * YFS.FetchStatus operation type
387 static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = {
388 .name = "YFS.FetchStatus(vnode)",
389 .op = yfs_FS_FetchStatus,
390 .deliver = yfs_deliver_fs_status_cb_and_volsync,
391 .destructor = afs_flat_call_destructor,
395 * Fetch the status information for a file.
397 int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
398 struct afs_volsync *volsync)
400 struct afs_vnode *vnode = fc->vnode;
401 struct afs_call *call;
402 struct afs_net *net = afs_v2net(vnode);
405 _enter(",%x,{%llx:%llu},,",
406 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
408 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus_vnode,
410 sizeof(struct yfs_xdr_YFSFid),
411 sizeof(struct yfs_xdr_YFSFetchStatus) +
412 sizeof(struct yfs_xdr_YFSCallBack) +
413 sizeof(struct yfs_xdr_YFSVolSync));
415 fc->ac.error = -ENOMEM;
421 call->out_volsync = volsync;
423 /* marshall the parameters */
425 bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
426 bp = xdr_encode_u32(bp, 0); /* RPC flags */
427 bp = xdr_encode_YFSFid(bp, &vnode->fid);
428 yfs_check_req(call, bp);
430 afs_use_fs_server(call, fc->cbi);
431 trace_afs_make_fs_call(call, &vnode->fid);
432 afs_set_fc_call(call, fc);
433 afs_make_call(&fc->ac, call, GFP_NOFS);
434 return afs_wait_for_call_to_complete(call, &fc->ac);
438 * Deliver reply data to an YFS.FetchData64.
440 static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
442 struct afs_read *req = call->read_request;
447 _enter("{%u,%zu/%llu}",
448 call->unmarshall, iov_iter_count(call->iter), req->actual_len);
450 switch (call->unmarshall) {
454 req->offset = req->pos & (PAGE_SIZE - 1);
455 afs_extract_to_tmp64(call);
459 /* extract the returned data length */
461 _debug("extract data length");
462 ret = afs_extract_data(call, true);
466 req->actual_len = be64_to_cpu(call->tmp64);
467 _debug("DATA length: %llu", req->actual_len);
468 req->remain = min(req->len, req->actual_len);
469 if (req->remain == 0)
475 ASSERTCMP(req->index, <, req->nr_pages);
476 if (req->remain > PAGE_SIZE - req->offset)
477 size = PAGE_SIZE - req->offset;
480 call->bvec[0].bv_len = size;
481 call->bvec[0].bv_offset = req->offset;
482 call->bvec[0].bv_page = req->pages[req->index];
483 iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size);
484 ASSERTCMP(size, <=, PAGE_SIZE);
487 /* extract the returned data */
489 _debug("extract data %zu/%llu",
490 iov_iter_count(call->iter), req->remain);
492 ret = afs_extract_data(call, true);
495 req->remain -= call->bvec[0].bv_len;
496 req->offset += call->bvec[0].bv_len;
497 ASSERTCMP(req->offset, <=, PAGE_SIZE);
498 if (req->offset == PAGE_SIZE) {
507 ASSERTCMP(req->remain, ==, 0);
508 if (req->actual_len <= req->len)
511 /* Discard any excess data the server gave us */
512 afs_extract_discard(call, req->actual_len - req->len);
513 call->unmarshall = 3;
517 _debug("extract discard %zu/%llu",
518 iov_iter_count(call->iter), req->actual_len - req->len);
520 ret = afs_extract_data(call, true);
525 call->unmarshall = 4;
526 afs_extract_to_buf(call,
527 sizeof(struct yfs_xdr_YFSFetchStatus) +
528 sizeof(struct yfs_xdr_YFSCallBack) +
529 sizeof(struct yfs_xdr_YFSVolSync));
532 /* extract the metadata */
534 ret = afs_extract_data(call, false);
539 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
542 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
543 xdr_decode_YFSVolSync(&bp, call->out_volsync);
545 req->data_version = call->out_scb->status.data_version;
546 req->file_size = call->out_scb->status.size;
555 for (; req->index < req->nr_pages; req->index++) {
556 if (req->offset < PAGE_SIZE)
557 zero_user_segment(req->pages[req->index],
558 req->offset, PAGE_SIZE);
564 _leave(" = 0 [done]");
568 static void yfs_fetch_data_destructor(struct afs_call *call)
570 afs_put_read(call->read_request);
571 afs_flat_call_destructor(call);
575 * YFS.FetchData64 operation type
577 static const struct afs_call_type yfs_RXYFSFetchData64 = {
578 .name = "YFS.FetchData64",
579 .op = yfs_FS_FetchData64,
580 .deliver = yfs_deliver_fs_fetch_data64,
581 .destructor = yfs_fetch_data_destructor,
585 * Fetch data from a file.
587 int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
588 struct afs_read *req)
590 struct afs_vnode *vnode = fc->vnode;
591 struct afs_call *call;
592 struct afs_net *net = afs_v2net(vnode);
595 _enter(",%x,{%llx:%llu},%llx,%llx",
596 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode,
599 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64,
601 sizeof(struct yfs_xdr_YFSFid) +
602 sizeof(struct yfs_xdr_u64) * 2,
603 sizeof(struct yfs_xdr_YFSFetchStatus) +
604 sizeof(struct yfs_xdr_YFSCallBack) +
605 sizeof(struct yfs_xdr_YFSVolSync));
611 call->out_volsync = NULL;
612 call->read_request = afs_get_read(req);
614 /* marshall the parameters */
616 bp = xdr_encode_u32(bp, YFSFETCHDATA64);
617 bp = xdr_encode_u32(bp, 0); /* RPC flags */
618 bp = xdr_encode_YFSFid(bp, &vnode->fid);
619 bp = xdr_encode_u64(bp, req->pos);
620 bp = xdr_encode_u64(bp, req->len);
621 yfs_check_req(call, bp);
623 afs_use_fs_server(call, fc->cbi);
624 trace_afs_make_fs_call(call, &vnode->fid);
625 afs_set_fc_call(call, fc);
626 afs_make_call(&fc->ac, call, GFP_NOFS);
627 return afs_wait_for_call_to_complete(call, &fc->ac);
631 * Deliver reply data for YFS.CreateFile or YFS.MakeDir.
633 static int yfs_deliver_fs_create_vnode(struct afs_call *call)
638 _enter("{%u}", call->unmarshall);
640 ret = afs_transfer_reply(call);
644 /* unmarshall the reply once we've received all of it */
646 xdr_decode_YFSFid(&bp, call->out_fid);
647 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
650 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
653 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
654 xdr_decode_YFSVolSync(&bp, call->out_volsync);
656 _leave(" = 0 [done]");
661 * FS.CreateFile and FS.MakeDir operation type
663 static const struct afs_call_type afs_RXFSCreateFile = {
664 .name = "YFS.CreateFile",
665 .op = yfs_FS_CreateFile,
666 .deliver = yfs_deliver_fs_create_vnode,
667 .destructor = afs_flat_call_destructor,
673 int yfs_fs_create_file(struct afs_fs_cursor *fc,
676 struct afs_status_cb *dvnode_scb,
677 struct afs_fid *newfid,
678 struct afs_status_cb *new_scb)
680 struct afs_vnode *dvnode = fc->vnode;
681 struct afs_call *call;
682 struct afs_net *net = afs_v2net(dvnode);
683 size_t namesz, reqsz, rplsz;
688 namesz = strlen(name);
689 reqsz = (sizeof(__be32) +
691 sizeof(struct yfs_xdr_YFSFid) +
693 sizeof(struct yfs_xdr_YFSStoreStatus) +
695 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
696 sizeof(struct yfs_xdr_YFSFetchStatus) +
697 sizeof(struct yfs_xdr_YFSFetchStatus) +
698 sizeof(struct yfs_xdr_YFSCallBack) +
699 sizeof(struct yfs_xdr_YFSVolSync));
701 call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz);
706 call->out_dir_scb = dvnode_scb;
707 call->out_fid = newfid;
708 call->out_scb = new_scb;
710 /* marshall the parameters */
712 bp = xdr_encode_u32(bp, YFSCREATEFILE);
713 bp = xdr_encode_u32(bp, 0); /* RPC flags */
714 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
715 bp = xdr_encode_string(bp, name, namesz);
716 bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
717 bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */
718 yfs_check_req(call, bp);
720 afs_use_fs_server(call, fc->cbi);
721 trace_afs_make_fs_call1(call, &dvnode->fid, name);
722 afs_set_fc_call(call, fc);
723 afs_make_call(&fc->ac, call, GFP_NOFS);
724 return afs_wait_for_call_to_complete(call, &fc->ac);
727 static const struct afs_call_type yfs_RXFSMakeDir = {
728 .name = "YFS.MakeDir",
729 .op = yfs_FS_MakeDir,
730 .deliver = yfs_deliver_fs_create_vnode,
731 .destructor = afs_flat_call_destructor,
737 int yfs_fs_make_dir(struct afs_fs_cursor *fc,
740 struct afs_status_cb *dvnode_scb,
741 struct afs_fid *newfid,
742 struct afs_status_cb *new_scb)
744 struct afs_vnode *dvnode = fc->vnode;
745 struct afs_call *call;
746 struct afs_net *net = afs_v2net(dvnode);
747 size_t namesz, reqsz, rplsz;
752 namesz = strlen(name);
753 reqsz = (sizeof(__be32) +
754 sizeof(struct yfs_xdr_RPCFlags) +
755 sizeof(struct yfs_xdr_YFSFid) +
757 sizeof(struct yfs_xdr_YFSStoreStatus));
758 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
759 sizeof(struct yfs_xdr_YFSFetchStatus) +
760 sizeof(struct yfs_xdr_YFSFetchStatus) +
761 sizeof(struct yfs_xdr_YFSCallBack) +
762 sizeof(struct yfs_xdr_YFSVolSync));
764 call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz);
769 call->out_dir_scb = dvnode_scb;
770 call->out_fid = newfid;
771 call->out_scb = new_scb;
773 /* marshall the parameters */
775 bp = xdr_encode_u32(bp, YFSMAKEDIR);
776 bp = xdr_encode_u32(bp, 0); /* RPC flags */
777 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
778 bp = xdr_encode_string(bp, name, namesz);
779 bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
780 yfs_check_req(call, bp);
782 afs_use_fs_server(call, fc->cbi);
783 trace_afs_make_fs_call1(call, &dvnode->fid, name);
784 afs_set_fc_call(call, fc);
785 afs_make_call(&fc->ac, call, GFP_NOFS);
786 return afs_wait_for_call_to_complete(call, &fc->ac);
790 * Deliver reply data to a YFS.RemoveFile2 operation.
792 static int yfs_deliver_fs_remove_file2(struct afs_call *call)
798 _enter("{%u}", call->unmarshall);
800 ret = afs_transfer_reply(call);
805 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
809 xdr_decode_YFSFid(&bp, &fid);
810 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
813 /* Was deleted if vnode->status.abort_code == VNOVNODE. */
815 xdr_decode_YFSVolSync(&bp, call->out_volsync);
820 * YFS.RemoveFile2 operation type.
822 static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
823 .name = "YFS.RemoveFile2",
824 .op = yfs_FS_RemoveFile2,
825 .deliver = yfs_deliver_fs_remove_file2,
826 .destructor = afs_flat_call_destructor,
830 * Remove a file and retrieve new file status.
832 int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
833 const char *name, struct afs_status_cb *dvnode_scb,
834 struct afs_status_cb *vnode_scb)
836 struct afs_vnode *dvnode = fc->vnode;
837 struct afs_call *call;
838 struct afs_net *net = afs_v2net(dvnode);
844 namesz = strlen(name);
846 call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2,
848 sizeof(struct yfs_xdr_RPCFlags) +
849 sizeof(struct yfs_xdr_YFSFid) +
851 sizeof(struct yfs_xdr_YFSFetchStatus) +
852 sizeof(struct yfs_xdr_YFSFid) +
853 sizeof(struct yfs_xdr_YFSFetchStatus) +
854 sizeof(struct yfs_xdr_YFSVolSync));
859 call->out_dir_scb = dvnode_scb;
860 call->out_scb = vnode_scb;
862 /* marshall the parameters */
864 bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
865 bp = xdr_encode_u32(bp, 0); /* RPC flags */
866 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
867 bp = xdr_encode_string(bp, name, namesz);
868 yfs_check_req(call, bp);
870 afs_use_fs_server(call, fc->cbi);
871 trace_afs_make_fs_call1(call, &dvnode->fid, name);
872 afs_set_fc_call(call, fc);
873 afs_make_call(&fc->ac, call, GFP_NOFS);
874 return afs_wait_for_call_to_complete(call, &fc->ac);
878 * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation.
880 static int yfs_deliver_fs_remove(struct afs_call *call)
885 _enter("{%u}", call->unmarshall);
887 ret = afs_transfer_reply(call);
892 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
896 xdr_decode_YFSVolSync(&bp, call->out_volsync);
901 * FS.RemoveDir and FS.RemoveFile operation types.
903 static const struct afs_call_type yfs_RXYFSRemoveFile = {
904 .name = "YFS.RemoveFile",
905 .op = yfs_FS_RemoveFile,
906 .deliver = yfs_deliver_fs_remove,
907 .destructor = afs_flat_call_destructor,
910 static const struct afs_call_type yfs_RXYFSRemoveDir = {
911 .name = "YFS.RemoveDir",
912 .op = yfs_FS_RemoveDir,
913 .deliver = yfs_deliver_fs_remove,
914 .destructor = afs_flat_call_destructor,
918 * remove a file or directory
920 int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
921 const char *name, bool isdir,
922 struct afs_status_cb *dvnode_scb)
924 struct afs_vnode *dvnode = fc->vnode;
925 struct afs_call *call;
926 struct afs_net *net = afs_v2net(dvnode);
932 namesz = strlen(name);
933 call = afs_alloc_flat_call(
934 net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile,
936 sizeof(struct yfs_xdr_RPCFlags) +
937 sizeof(struct yfs_xdr_YFSFid) +
939 sizeof(struct yfs_xdr_YFSFetchStatus) +
940 sizeof(struct yfs_xdr_YFSVolSync));
945 call->out_dir_scb = dvnode_scb;
947 /* marshall the parameters */
949 bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE);
950 bp = xdr_encode_u32(bp, 0); /* RPC flags */
951 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
952 bp = xdr_encode_string(bp, name, namesz);
953 yfs_check_req(call, bp);
955 afs_use_fs_server(call, fc->cbi);
956 trace_afs_make_fs_call1(call, &dvnode->fid, name);
957 afs_set_fc_call(call, fc);
958 afs_make_call(&fc->ac, call, GFP_NOFS);
959 return afs_wait_for_call_to_complete(call, &fc->ac);
963 * Deliver reply data to a YFS.Link operation.
965 static int yfs_deliver_fs_link(struct afs_call *call)
970 _enter("{%u}", call->unmarshall);
972 ret = afs_transfer_reply(call);
977 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
980 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
983 xdr_decode_YFSVolSync(&bp, call->out_volsync);
984 _leave(" = 0 [done]");
989 * YFS.Link operation type.
991 static const struct afs_call_type yfs_RXYFSLink = {
994 .deliver = yfs_deliver_fs_link,
995 .destructor = afs_flat_call_destructor,
1001 int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
1003 struct afs_status_cb *dvnode_scb,
1004 struct afs_status_cb *vnode_scb)
1006 struct afs_vnode *dvnode = fc->vnode;
1007 struct afs_call *call;
1008 struct afs_net *net = afs_v2net(vnode);
1014 namesz = strlen(name);
1015 call = afs_alloc_flat_call(net, &yfs_RXYFSLink,
1017 sizeof(struct yfs_xdr_RPCFlags) +
1018 sizeof(struct yfs_xdr_YFSFid) +
1019 xdr_strlen(namesz) +
1020 sizeof(struct yfs_xdr_YFSFid),
1021 sizeof(struct yfs_xdr_YFSFetchStatus) +
1022 sizeof(struct yfs_xdr_YFSFetchStatus) +
1023 sizeof(struct yfs_xdr_YFSVolSync));
1027 call->key = fc->key;
1028 call->out_dir_scb = dvnode_scb;
1029 call->out_scb = vnode_scb;
1031 /* marshall the parameters */
1033 bp = xdr_encode_u32(bp, YFSLINK);
1034 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1035 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
1036 bp = xdr_encode_string(bp, name, namesz);
1037 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1038 yfs_check_req(call, bp);
1040 afs_use_fs_server(call, fc->cbi);
1041 trace_afs_make_fs_call1(call, &vnode->fid, name);
1042 afs_set_fc_call(call, fc);
1043 afs_make_call(&fc->ac, call, GFP_NOFS);
1044 return afs_wait_for_call_to_complete(call, &fc->ac);
1048 * Deliver reply data to a YFS.Symlink operation.
1050 static int yfs_deliver_fs_symlink(struct afs_call *call)
1055 _enter("{%u}", call->unmarshall);
1057 ret = afs_transfer_reply(call);
1061 /* unmarshall the reply once we've received all of it */
1063 xdr_decode_YFSFid(&bp, call->out_fid);
1064 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
1067 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
1070 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1072 _leave(" = 0 [done]");
1077 * YFS.Symlink operation type
1079 static const struct afs_call_type yfs_RXYFSSymlink = {
1080 .name = "YFS.Symlink",
1081 .op = yfs_FS_Symlink,
1082 .deliver = yfs_deliver_fs_symlink,
1083 .destructor = afs_flat_call_destructor,
1087 * Create a symbolic link.
1089 int yfs_fs_symlink(struct afs_fs_cursor *fc,
1091 const char *contents,
1092 struct afs_status_cb *dvnode_scb,
1093 struct afs_fid *newfid,
1094 struct afs_status_cb *vnode_scb)
1096 struct afs_vnode *dvnode = fc->vnode;
1097 struct afs_call *call;
1098 struct afs_net *net = afs_v2net(dvnode);
1099 size_t namesz, contents_sz;
1104 namesz = strlen(name);
1105 contents_sz = strlen(contents);
1106 call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink,
1108 sizeof(struct yfs_xdr_RPCFlags) +
1109 sizeof(struct yfs_xdr_YFSFid) +
1110 xdr_strlen(namesz) +
1111 xdr_strlen(contents_sz) +
1112 sizeof(struct yfs_xdr_YFSStoreStatus),
1113 sizeof(struct yfs_xdr_YFSFid) +
1114 sizeof(struct yfs_xdr_YFSFetchStatus) +
1115 sizeof(struct yfs_xdr_YFSFetchStatus) +
1116 sizeof(struct yfs_xdr_YFSVolSync));
1120 call->key = fc->key;
1121 call->out_dir_scb = dvnode_scb;
1122 call->out_fid = newfid;
1123 call->out_scb = vnode_scb;
1125 /* marshall the parameters */
1127 bp = xdr_encode_u32(bp, YFSSYMLINK);
1128 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1129 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
1130 bp = xdr_encode_string(bp, name, namesz);
1131 bp = xdr_encode_string(bp, contents, contents_sz);
1132 bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO);
1133 yfs_check_req(call, bp);
1135 afs_use_fs_server(call, fc->cbi);
1136 trace_afs_make_fs_call1(call, &dvnode->fid, name);
1137 afs_set_fc_call(call, fc);
1138 afs_make_call(&fc->ac, call, GFP_NOFS);
1139 return afs_wait_for_call_to_complete(call, &fc->ac);
1143 * Deliver reply data to a YFS.Rename operation.
1145 static int yfs_deliver_fs_rename(struct afs_call *call)
1150 _enter("{%u}", call->unmarshall);
1152 ret = afs_transfer_reply(call);
1157 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
1160 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
1164 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1165 _leave(" = 0 [done]");
1170 * YFS.Rename operation type
1172 static const struct afs_call_type yfs_RXYFSRename = {
1173 .name = "FS.Rename",
1174 .op = yfs_FS_Rename,
1175 .deliver = yfs_deliver_fs_rename,
1176 .destructor = afs_flat_call_destructor,
1180 * Rename a file or directory.
1182 int yfs_fs_rename(struct afs_fs_cursor *fc,
1183 const char *orig_name,
1184 struct afs_vnode *new_dvnode,
1185 const char *new_name,
1186 struct afs_status_cb *orig_dvnode_scb,
1187 struct afs_status_cb *new_dvnode_scb)
1189 struct afs_vnode *orig_dvnode = fc->vnode;
1190 struct afs_call *call;
1191 struct afs_net *net = afs_v2net(orig_dvnode);
1192 size_t o_namesz, n_namesz;
1197 o_namesz = strlen(orig_name);
1198 n_namesz = strlen(new_name);
1199 call = afs_alloc_flat_call(net, &yfs_RXYFSRename,
1201 sizeof(struct yfs_xdr_RPCFlags) +
1202 sizeof(struct yfs_xdr_YFSFid) +
1203 xdr_strlen(o_namesz) +
1204 sizeof(struct yfs_xdr_YFSFid) +
1205 xdr_strlen(n_namesz),
1206 sizeof(struct yfs_xdr_YFSFetchStatus) +
1207 sizeof(struct yfs_xdr_YFSFetchStatus) +
1208 sizeof(struct yfs_xdr_YFSVolSync));
1212 call->key = fc->key;
1213 call->out_dir_scb = orig_dvnode_scb;
1214 call->out_scb = new_dvnode_scb;
1216 /* marshall the parameters */
1218 bp = xdr_encode_u32(bp, YFSRENAME);
1219 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1220 bp = xdr_encode_YFSFid(bp, &orig_dvnode->fid);
1221 bp = xdr_encode_string(bp, orig_name, o_namesz);
1222 bp = xdr_encode_YFSFid(bp, &new_dvnode->fid);
1223 bp = xdr_encode_string(bp, new_name, n_namesz);
1224 yfs_check_req(call, bp);
1226 afs_use_fs_server(call, fc->cbi);
1227 trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name);
1228 afs_set_fc_call(call, fc);
1229 afs_make_call(&fc->ac, call, GFP_NOFS);
1230 return afs_wait_for_call_to_complete(call, &fc->ac);
1234 * YFS.StoreData64 operation type.
1236 static const struct afs_call_type yfs_RXYFSStoreData64 = {
1237 .name = "YFS.StoreData64",
1238 .op = yfs_FS_StoreData64,
1239 .deliver = yfs_deliver_status_and_volsync,
1240 .destructor = afs_flat_call_destructor,
1244 * Store a set of pages to a large file.
1246 int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
1247 pgoff_t first, pgoff_t last,
1248 unsigned offset, unsigned to,
1249 struct afs_status_cb *scb)
1251 struct afs_vnode *vnode = fc->vnode;
1252 struct afs_call *call;
1253 struct afs_net *net = afs_v2net(vnode);
1254 loff_t size, pos, i_size;
1257 _enter(",%x,{%llx:%llu},,",
1258 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1260 size = (loff_t)to - (loff_t)offset;
1262 size += (loff_t)(last - first) << PAGE_SHIFT;
1263 pos = (loff_t)first << PAGE_SHIFT;
1266 i_size = i_size_read(&vnode->vfs_inode);
1267 if (pos + size > i_size)
1268 i_size = size + pos;
1270 _debug("size %llx, at %llx, i_size %llx",
1271 (unsigned long long)size, (unsigned long long)pos,
1272 (unsigned long long)i_size);
1274 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64,
1277 sizeof(struct yfs_xdr_YFSFid) +
1278 sizeof(struct yfs_xdr_YFSStoreStatus) +
1279 sizeof(struct yfs_xdr_u64) * 3,
1280 sizeof(struct yfs_xdr_YFSFetchStatus) +
1281 sizeof(struct yfs_xdr_YFSVolSync));
1285 call->key = fc->key;
1286 call->mapping = mapping;
1287 call->first = first;
1289 call->first_offset = offset;
1291 call->send_pages = true;
1292 call->out_scb = scb;
1294 /* marshall the parameters */
1296 bp = xdr_encode_u32(bp, YFSSTOREDATA64);
1297 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1298 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1299 bp = xdr_encode_YFSStoreStatus_mtime(bp, &vnode->vfs_inode.i_mtime);
1300 bp = xdr_encode_u64(bp, pos);
1301 bp = xdr_encode_u64(bp, size);
1302 bp = xdr_encode_u64(bp, i_size);
1303 yfs_check_req(call, bp);
1305 afs_use_fs_server(call, fc->cbi);
1306 trace_afs_make_fs_call(call, &vnode->fid);
1307 afs_set_fc_call(call, fc);
1308 afs_make_call(&fc->ac, call, GFP_NOFS);
1309 return afs_wait_for_call_to_complete(call, &fc->ac);
1313 * YFS.StoreStatus operation type
1315 static const struct afs_call_type yfs_RXYFSStoreStatus = {
1316 .name = "YFS.StoreStatus",
1317 .op = yfs_FS_StoreStatus,
1318 .deliver = yfs_deliver_status_and_volsync,
1319 .destructor = afs_flat_call_destructor,
1322 static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = {
1323 .name = "YFS.StoreData64",
1324 .op = yfs_FS_StoreData64,
1325 .deliver = yfs_deliver_status_and_volsync,
1326 .destructor = afs_flat_call_destructor,
1330 * Set the attributes on a file, using YFS.StoreData64 rather than
1331 * YFS.StoreStatus so as to alter the file size also.
1333 static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr,
1334 struct afs_status_cb *scb)
1336 struct afs_vnode *vnode = fc->vnode;
1337 struct afs_call *call;
1338 struct afs_net *net = afs_v2net(vnode);
1341 _enter(",%x,{%llx:%llu},,",
1342 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1344 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64_as_Status,
1345 sizeof(__be32) * 2 +
1346 sizeof(struct yfs_xdr_YFSFid) +
1347 sizeof(struct yfs_xdr_YFSStoreStatus) +
1348 sizeof(struct yfs_xdr_u64) * 3,
1349 sizeof(struct yfs_xdr_YFSFetchStatus) +
1350 sizeof(struct yfs_xdr_YFSVolSync));
1354 call->key = fc->key;
1355 call->out_scb = scb;
1357 /* marshall the parameters */
1359 bp = xdr_encode_u32(bp, YFSSTOREDATA64);
1360 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1361 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1362 bp = xdr_encode_YFS_StoreStatus(bp, attr);
1363 bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */
1364 bp = xdr_encode_u64(bp, 0); /* size of write */
1365 bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */
1366 yfs_check_req(call, bp);
1368 afs_use_fs_server(call, fc->cbi);
1369 trace_afs_make_fs_call(call, &vnode->fid);
1370 afs_set_fc_call(call, fc);
1371 afs_make_call(&fc->ac, call, GFP_NOFS);
1372 return afs_wait_for_call_to_complete(call, &fc->ac);
1376 * Set the attributes on a file, using YFS.StoreData64 if there's a change in
1377 * file size, and YFS.StoreStatus otherwise.
1379 int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr,
1380 struct afs_status_cb *scb)
1382 struct afs_vnode *vnode = fc->vnode;
1383 struct afs_call *call;
1384 struct afs_net *net = afs_v2net(vnode);
1387 if (attr->ia_valid & ATTR_SIZE)
1388 return yfs_fs_setattr_size(fc, attr, scb);
1390 _enter(",%x,{%llx:%llu},,",
1391 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
1393 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus,
1394 sizeof(__be32) * 2 +
1395 sizeof(struct yfs_xdr_YFSFid) +
1396 sizeof(struct yfs_xdr_YFSStoreStatus),
1397 sizeof(struct yfs_xdr_YFSFetchStatus) +
1398 sizeof(struct yfs_xdr_YFSVolSync));
1402 call->key = fc->key;
1403 call->out_scb = scb;
1405 /* marshall the parameters */
1407 bp = xdr_encode_u32(bp, YFSSTORESTATUS);
1408 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1409 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1410 bp = xdr_encode_YFS_StoreStatus(bp, attr);
1411 yfs_check_req(call, bp);
1413 afs_use_fs_server(call, fc->cbi);
1414 trace_afs_make_fs_call(call, &vnode->fid);
1415 afs_set_fc_call(call, fc);
1416 afs_make_call(&fc->ac, call, GFP_NOFS);
1417 return afs_wait_for_call_to_complete(call, &fc->ac);
1421 * Deliver reply data to a YFS.GetVolumeStatus operation.
1423 static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
1430 _enter("{%u}", call->unmarshall);
1432 switch (call->unmarshall) {
1435 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus));
1438 /* extract the returned status record */
1440 _debug("extract status");
1441 ret = afs_extract_data(call, true);
1446 xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus);
1448 afs_extract_to_tmp(call);
1451 /* extract the volume name length */
1453 ret = afs_extract_data(call, true);
1457 call->count = ntohl(call->tmp);
1458 _debug("volname length: %u", call->count);
1459 if (call->count >= AFSNAMEMAX)
1460 return afs_protocol_error(call, -EBADMSG,
1461 afs_eproto_volname_len);
1462 size = (call->count + 3) & ~3; /* It's padded */
1463 afs_extract_to_buf(call, size);
1467 /* extract the volume name */
1469 _debug("extract volname");
1470 ret = afs_extract_data(call, true);
1476 _debug("volname '%s'", p);
1477 afs_extract_to_tmp(call);
1481 /* extract the offline message length */
1483 ret = afs_extract_data(call, true);
1487 call->count = ntohl(call->tmp);
1488 _debug("offline msg length: %u", call->count);
1489 if (call->count >= AFSNAMEMAX)
1490 return afs_protocol_error(call, -EBADMSG,
1491 afs_eproto_offline_msg_len);
1492 size = (call->count + 3) & ~3; /* It's padded */
1493 afs_extract_to_buf(call, size);
1497 /* extract the offline message */
1499 _debug("extract offline");
1500 ret = afs_extract_data(call, true);
1506 _debug("offline '%s'", p);
1508 afs_extract_to_tmp(call);
1512 /* extract the message of the day length */
1514 ret = afs_extract_data(call, true);
1518 call->count = ntohl(call->tmp);
1519 _debug("motd length: %u", call->count);
1520 if (call->count >= AFSNAMEMAX)
1521 return afs_protocol_error(call, -EBADMSG,
1522 afs_eproto_motd_len);
1523 size = (call->count + 3) & ~3; /* It's padded */
1524 afs_extract_to_buf(call, size);
1528 /* extract the message of the day */
1530 _debug("extract motd");
1531 ret = afs_extract_data(call, false);
1537 _debug("motd '%s'", p);
1546 _leave(" = 0 [done]");
1551 * YFS.GetVolumeStatus operation type
1553 static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
1554 .name = "YFS.GetVolumeStatus",
1555 .op = yfs_FS_GetVolumeStatus,
1556 .deliver = yfs_deliver_fs_get_volume_status,
1557 .destructor = afs_flat_call_destructor,
1561 * fetch the status of a volume
1563 int yfs_fs_get_volume_status(struct afs_fs_cursor *fc,
1564 struct afs_volume_status *vs)
1566 struct afs_vnode *vnode = fc->vnode;
1567 struct afs_call *call;
1568 struct afs_net *net = afs_v2net(vnode);
1573 call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus,
1574 sizeof(__be32) * 2 +
1575 sizeof(struct yfs_xdr_u64),
1577 sizeof(struct yfs_xdr_YFSFetchVolumeStatus) +
1583 call->key = fc->key;
1584 call->out_volstatus = vs;
1586 /* marshall the parameters */
1588 bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
1589 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1590 bp = xdr_encode_u64(bp, vnode->fid.vid);
1591 yfs_check_req(call, bp);
1593 afs_use_fs_server(call, fc->cbi);
1594 trace_afs_make_fs_call(call, &vnode->fid);
1595 afs_set_fc_call(call, fc);
1596 afs_make_call(&fc->ac, call, GFP_NOFS);
1597 return afs_wait_for_call_to_complete(call, &fc->ac);
1601 * YFS.SetLock operation type
1603 static const struct afs_call_type yfs_RXYFSSetLock = {
1604 .name = "YFS.SetLock",
1605 .op = yfs_FS_SetLock,
1606 .deliver = yfs_deliver_status_and_volsync,
1607 .done = afs_lock_op_done,
1608 .destructor = afs_flat_call_destructor,
1612 * YFS.ExtendLock operation type
1614 static const struct afs_call_type yfs_RXYFSExtendLock = {
1615 .name = "YFS.ExtendLock",
1616 .op = yfs_FS_ExtendLock,
1617 .deliver = yfs_deliver_status_and_volsync,
1618 .done = afs_lock_op_done,
1619 .destructor = afs_flat_call_destructor,
1623 * YFS.ReleaseLock operation type
1625 static const struct afs_call_type yfs_RXYFSReleaseLock = {
1626 .name = "YFS.ReleaseLock",
1627 .op = yfs_FS_ReleaseLock,
1628 .deliver = yfs_deliver_status_and_volsync,
1629 .destructor = afs_flat_call_destructor,
1633 * Set a lock on a file
1635 int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type,
1636 struct afs_status_cb *scb)
1638 struct afs_vnode *vnode = fc->vnode;
1639 struct afs_call *call;
1640 struct afs_net *net = afs_v2net(vnode);
1645 call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock,
1646 sizeof(__be32) * 2 +
1647 sizeof(struct yfs_xdr_YFSFid) +
1649 sizeof(struct yfs_xdr_YFSFetchStatus) +
1650 sizeof(struct yfs_xdr_YFSVolSync));
1654 call->key = fc->key;
1655 call->lvnode = vnode;
1656 call->out_scb = scb;
1658 /* marshall the parameters */
1660 bp = xdr_encode_u32(bp, YFSSETLOCK);
1661 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1662 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1663 bp = xdr_encode_u32(bp, type);
1664 yfs_check_req(call, bp);
1666 afs_use_fs_server(call, fc->cbi);
1667 trace_afs_make_fs_calli(call, &vnode->fid, type);
1668 afs_set_fc_call(call, fc);
1669 afs_make_call(&fc->ac, call, GFP_NOFS);
1670 return afs_wait_for_call_to_complete(call, &fc->ac);
1674 * extend a lock on a file
1676 int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1678 struct afs_vnode *vnode = fc->vnode;
1679 struct afs_call *call;
1680 struct afs_net *net = afs_v2net(vnode);
1685 call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock,
1686 sizeof(__be32) * 2 +
1687 sizeof(struct yfs_xdr_YFSFid),
1688 sizeof(struct yfs_xdr_YFSFetchStatus) +
1689 sizeof(struct yfs_xdr_YFSVolSync));
1693 call->key = fc->key;
1694 call->lvnode = vnode;
1695 call->out_scb = scb;
1697 /* marshall the parameters */
1699 bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
1700 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1701 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1702 yfs_check_req(call, bp);
1704 afs_use_fs_server(call, fc->cbi);
1705 trace_afs_make_fs_call(call, &vnode->fid);
1706 afs_set_fc_call(call, fc);
1707 afs_make_call(&fc->ac, call, GFP_NOFS);
1708 return afs_wait_for_call_to_complete(call, &fc->ac);
1712 * release a lock on a file
1714 int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1716 struct afs_vnode *vnode = fc->vnode;
1717 struct afs_call *call;
1718 struct afs_net *net = afs_v2net(vnode);
1723 call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock,
1724 sizeof(__be32) * 2 +
1725 sizeof(struct yfs_xdr_YFSFid),
1726 sizeof(struct yfs_xdr_YFSFetchStatus) +
1727 sizeof(struct yfs_xdr_YFSVolSync));
1731 call->key = fc->key;
1732 call->lvnode = vnode;
1733 call->out_scb = scb;
1735 /* marshall the parameters */
1737 bp = xdr_encode_u32(bp, YFSRELEASELOCK);
1738 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1739 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1740 yfs_check_req(call, bp);
1742 afs_use_fs_server(call, fc->cbi);
1743 trace_afs_make_fs_call(call, &vnode->fid);
1744 afs_set_fc_call(call, fc);
1745 afs_make_call(&fc->ac, call, GFP_NOFS);
1746 return afs_wait_for_call_to_complete(call, &fc->ac);
1750 * YFS.FetchStatus operation type
1752 static const struct afs_call_type yfs_RXYFSFetchStatus = {
1753 .name = "YFS.FetchStatus",
1754 .op = yfs_FS_FetchStatus,
1755 .deliver = yfs_deliver_fs_status_cb_and_volsync,
1756 .destructor = afs_flat_call_destructor,
1760 * Fetch the status information for a fid without needing a vnode handle.
1762 int yfs_fs_fetch_status(struct afs_fs_cursor *fc,
1763 struct afs_net *net,
1764 struct afs_fid *fid,
1765 struct afs_status_cb *scb,
1766 struct afs_volsync *volsync)
1768 struct afs_call *call;
1771 _enter(",%x,{%llx:%llu},,",
1772 key_serial(fc->key), fid->vid, fid->vnode);
1774 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus,
1775 sizeof(__be32) * 2 +
1776 sizeof(struct yfs_xdr_YFSFid),
1777 sizeof(struct yfs_xdr_YFSFetchStatus) +
1778 sizeof(struct yfs_xdr_YFSCallBack) +
1779 sizeof(struct yfs_xdr_YFSVolSync));
1781 fc->ac.error = -ENOMEM;
1785 call->key = fc->key;
1786 call->out_scb = scb;
1787 call->out_volsync = volsync;
1789 /* marshall the parameters */
1791 bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
1792 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1793 bp = xdr_encode_YFSFid(bp, fid);
1794 yfs_check_req(call, bp);
1796 afs_use_fs_server(call, fc->cbi);
1797 trace_afs_make_fs_call(call, fid);
1798 afs_set_fc_call(call, fc);
1799 afs_make_call(&fc->ac, call, GFP_NOFS);
1800 return afs_wait_for_call_to_complete(call, &fc->ac);
1804 * Deliver reply data to an YFS.InlineBulkStatus call
1806 static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
1808 struct afs_status_cb *scb;
1813 _enter("{%u}", call->unmarshall);
1815 switch (call->unmarshall) {
1817 afs_extract_to_tmp(call);
1821 /* Extract the file status count and array in two steps */
1823 _debug("extract status count");
1824 ret = afs_extract_data(call, true);
1828 tmp = ntohl(call->tmp);
1829 _debug("status count: %u/%u", tmp, call->count2);
1830 if (tmp != call->count2)
1831 return afs_protocol_error(call, -EBADMSG,
1832 afs_eproto_ibulkst_count);
1837 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus));
1841 _debug("extract status array %u", call->count);
1842 ret = afs_extract_data(call, true);
1847 scb = &call->out_scb[call->count];
1848 ret = xdr_decode_YFSFetchStatus(&bp, call, scb);
1853 if (call->count < call->count2)
1858 afs_extract_to_tmp(call);
1861 /* Extract the callback count and array in two steps */
1863 _debug("extract CB count");
1864 ret = afs_extract_data(call, true);
1868 tmp = ntohl(call->tmp);
1869 _debug("CB count: %u", tmp);
1870 if (tmp != call->count2)
1871 return afs_protocol_error(call, -EBADMSG,
1872 afs_eproto_ibulkst_cb_count);
1876 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack));
1880 _debug("extract CB array");
1881 ret = afs_extract_data(call, true);
1885 _debug("unmarshall CB array");
1887 scb = &call->out_scb[call->count];
1888 xdr_decode_YFSCallBack(&bp, call, scb);
1890 if (call->count < call->count2)
1893 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
1898 ret = afs_extract_data(call, false);
1903 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1912 _leave(" = 0 [done]");
1917 * FS.InlineBulkStatus operation type
1919 static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
1920 .name = "YFS.InlineBulkStatus",
1921 .op = yfs_FS_InlineBulkStatus,
1922 .deliver = yfs_deliver_fs_inline_bulk_status,
1923 .destructor = afs_flat_call_destructor,
1927 * Fetch the status information for up to 1024 files
1929 int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
1930 struct afs_net *net,
1931 struct afs_fid *fids,
1932 struct afs_status_cb *statuses,
1933 unsigned int nr_fids,
1934 struct afs_volsync *volsync)
1936 struct afs_call *call;
1940 _enter(",%x,{%llx:%llu},%u",
1941 key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
1943 call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus,
1947 sizeof(struct yfs_xdr_YFSFid) * nr_fids,
1948 sizeof(struct yfs_xdr_YFSFetchStatus));
1950 fc->ac.error = -ENOMEM;
1954 call->key = fc->key;
1955 call->out_scb = statuses;
1956 call->out_volsync = volsync;
1957 call->count2 = nr_fids;
1959 /* marshall the parameters */
1961 bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
1962 bp = xdr_encode_u32(bp, 0); /* RPCFlags */
1963 bp = xdr_encode_u32(bp, nr_fids);
1964 for (i = 0; i < nr_fids; i++)
1965 bp = xdr_encode_YFSFid(bp, &fids[i]);
1966 yfs_check_req(call, bp);
1968 afs_use_fs_server(call, fc->cbi);
1969 trace_afs_make_fs_call(call, &fids[0]);
1970 afs_set_fc_call(call, fc);
1971 afs_make_call(&fc->ac, call, GFP_NOFS);
1972 return afs_wait_for_call_to_complete(call, &fc->ac);
1976 * Deliver reply data to an YFS.FetchOpaqueACL.
1978 static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
1980 struct yfs_acl *yacl = call->out_yacl;
1981 struct afs_acl *acl;
1986 _enter("{%u}", call->unmarshall);
1988 switch (call->unmarshall) {
1990 afs_extract_to_tmp(call);
1994 /* Extract the file ACL length */
1996 ret = afs_extract_data(call, true);
2000 size = call->count2 = ntohl(call->tmp);
2001 size = round_up(size, 4);
2003 if (yacl->flags & YFS_ACL_WANT_ACL) {
2004 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2008 acl->size = call->count2;
2009 afs_extract_begin(call, acl->data, size);
2011 afs_extract_discard(call, size);
2016 /* Extract the file ACL */
2018 ret = afs_extract_data(call, true);
2022 afs_extract_to_tmp(call);
2026 /* Extract the volume ACL length */
2028 ret = afs_extract_data(call, true);
2032 size = call->count2 = ntohl(call->tmp);
2033 size = round_up(size, 4);
2035 if (yacl->flags & YFS_ACL_WANT_VOL_ACL) {
2036 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2039 yacl->vol_acl = acl;
2040 acl->size = call->count2;
2041 afs_extract_begin(call, acl->data, size);
2043 afs_extract_discard(call, size);
2048 /* Extract the volume ACL */
2050 ret = afs_extract_data(call, true);
2054 afs_extract_to_buf(call,
2055 sizeof(__be32) * 2 +
2056 sizeof(struct yfs_xdr_YFSFetchStatus) +
2057 sizeof(struct yfs_xdr_YFSVolSync));
2061 /* extract the metadata */
2063 ret = afs_extract_data(call, false);
2068 yacl->inherit_flag = ntohl(*bp++);
2069 yacl->num_cleaned = ntohl(*bp++);
2070 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
2073 xdr_decode_YFSVolSync(&bp, call->out_volsync);
2082 _leave(" = 0 [done]");
2086 void yfs_free_opaque_acl(struct yfs_acl *yacl)
2090 kfree(yacl->vol_acl);
2096 * YFS.FetchOpaqueACL operation type
2098 static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = {
2099 .name = "YFS.FetchOpaqueACL",
2100 .op = yfs_FS_FetchOpaqueACL,
2101 .deliver = yfs_deliver_fs_fetch_opaque_acl,
2102 .destructor = afs_flat_call_destructor,
2106 * Fetch the YFS advanced ACLs for a file.
2108 struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc,
2109 struct yfs_acl *yacl,
2110 struct afs_status_cb *scb)
2112 struct afs_vnode *vnode = fc->vnode;
2113 struct afs_call *call;
2114 struct afs_net *net = afs_v2net(vnode);
2117 _enter(",%x,{%llx:%llu},,",
2118 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2120 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL,
2121 sizeof(__be32) * 2 +
2122 sizeof(struct yfs_xdr_YFSFid),
2123 sizeof(__be32) * 2 +
2124 sizeof(struct yfs_xdr_YFSFetchStatus) +
2125 sizeof(struct yfs_xdr_YFSVolSync));
2127 fc->ac.error = -ENOMEM;
2128 return ERR_PTR(-ENOMEM);
2131 call->key = fc->key;
2132 call->out_yacl = yacl;
2133 call->out_scb = scb;
2134 call->out_volsync = NULL;
2136 /* marshall the parameters */
2138 bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL);
2139 bp = xdr_encode_u32(bp, 0); /* RPC flags */
2140 bp = xdr_encode_YFSFid(bp, &vnode->fid);
2141 yfs_check_req(call, bp);
2143 afs_use_fs_server(call, fc->cbi);
2144 trace_afs_make_fs_call(call, &vnode->fid);
2145 afs_make_call(&fc->ac, call, GFP_KERNEL);
2146 return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac);
2150 * YFS.StoreOpaqueACL2 operation type
2152 static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = {
2153 .name = "YFS.StoreOpaqueACL2",
2154 .op = yfs_FS_StoreOpaqueACL2,
2155 .deliver = yfs_deliver_status_and_volsync,
2156 .destructor = afs_flat_call_destructor,
2160 * Fetch the YFS ACL for a file.
2162 int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl,
2163 struct afs_status_cb *scb)
2165 struct afs_vnode *vnode = fc->vnode;
2166 struct afs_call *call;
2167 struct afs_net *net = afs_v2net(vnode);
2171 _enter(",%x,{%llx:%llu},,",
2172 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2174 size = round_up(acl->size, 4);
2175 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreOpaqueACL2,
2176 sizeof(__be32) * 2 +
2177 sizeof(struct yfs_xdr_YFSFid) +
2178 sizeof(__be32) + size,
2179 sizeof(struct yfs_xdr_YFSFetchStatus) +
2180 sizeof(struct yfs_xdr_YFSVolSync));
2182 fc->ac.error = -ENOMEM;
2186 call->key = fc->key;
2187 call->out_scb = scb;
2188 call->out_volsync = NULL;
2190 /* marshall the parameters */
2192 bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2);
2193 bp = xdr_encode_u32(bp, 0); /* RPC flags */
2194 bp = xdr_encode_YFSFid(bp, &vnode->fid);
2195 bp = xdr_encode_u32(bp, acl->size);
2196 memcpy(bp, acl->data, acl->size);
2197 if (acl->size != size)
2198 memset((void *)bp + acl->size, 0, size - acl->size);
2199 yfs_check_req(call, bp);
2201 trace_afs_make_fs_call(call, &vnode->fid);
2202 afs_make_call(&fc->ac, call, GFP_KERNEL);
2203 return afs_wait_for_call_to_complete(call, &fc->ac);