1 /* YFS File Server client stubs
3 * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
12 #include <linux/init.h>
13 #include <linux/slab.h>
14 #include <linux/sched.h>
15 #include <linux/circ_buf.h>
16 #include <linux/iversion.h>
20 #include "protocol_yfs.h"
22 static const struct afs_fid afs_zero_fid;
24 static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
26 call->cbi = afs_get_cb_interest(cbi);
29 #define xdr_size(x) (sizeof(*x) / sizeof(__be32))
31 static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid)
33 const struct yfs_xdr_YFSFid *x = (const void *)*_bp;
35 fid->vid = xdr_to_u64(x->volume);
36 fid->vnode = xdr_to_u64(x->vnode.lo);
37 fid->vnode_hi = ntohl(x->vnode.hi);
38 fid->unique = ntohl(x->vnode.unique);
42 static __be32 *xdr_encode_u32(__be32 *bp, u32 n)
48 static __be32 *xdr_encode_u64(__be32 *bp, u64 n)
50 struct yfs_xdr_u64 *x = (void *)bp;
53 return bp + xdr_size(x);
56 static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid)
58 struct yfs_xdr_YFSFid *x = (void *)bp;
60 x->volume = u64_to_xdr(fid->vid);
61 x->vnode.lo = u64_to_xdr(fid->vnode);
62 x->vnode.hi = htonl(fid->vnode_hi);
63 x->vnode.unique = htonl(fid->unique);
64 return bp + xdr_size(x);
67 static size_t xdr_strlen(unsigned int len)
69 return sizeof(__be32) + round_up(len, sizeof(__be32));
72 static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len)
74 bp = xdr_encode_u32(bp, len);
75 bp = memcpy(bp, p, len);
77 unsigned int pad = 4 - (len & 3);
79 memset((u8 *)bp + len, 0, pad);
83 return bp + len / sizeof(__be32);
86 static s64 linux_to_yfs_time(const struct timespec64 *t)
88 /* Convert to 100ns intervals. */
89 return (u64)t->tv_sec * 10000000 + t->tv_nsec/100;
92 static __be32 *xdr_encode_YFSStoreStatus_mode(__be32 *bp, mode_t mode)
94 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
96 x->mask = htonl(AFS_SET_MODE);
97 x->mode = htonl(mode & S_IALLUGO);
98 x->mtime_client = u64_to_xdr(0);
99 x->owner = u64_to_xdr(0);
100 x->group = u64_to_xdr(0);
101 return bp + xdr_size(x);
104 static __be32 *xdr_encode_YFSStoreStatus_mtime(__be32 *bp, const struct timespec64 *t)
106 struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
107 s64 mtime = linux_to_yfs_time(t);
109 x->mask = htonl(AFS_SET_MTIME);
111 x->mtime_client = u64_to_xdr(mtime);
112 x->owner = u64_to_xdr(0);
113 x->group = u64_to_xdr(0);
114 return bp + xdr_size(x);
118 * Convert a signed 100ns-resolution 64-bit time into a timespec.
120 static struct timespec64 yfs_time_to_linux(s64 t)
122 struct timespec64 ts;
126 * Unfortunately can not use normal 64 bit division on 32 bit arch, but
127 * the alternative, do_div, does not work with negative numbers so have
128 * to special case them
132 ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
133 ts.tv_nsec = -ts.tv_nsec;
137 ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
144 static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr)
146 s64 t = xdr_to_u64(xdr);
148 return yfs_time_to_linux(t);
151 static void yfs_check_req(struct afs_call *call, __be32 *bp)
153 size_t len = (void *)bp - call->request;
155 if (len > call->request_size)
156 pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n",
157 call->type->name, len, call->request_size);
158 else if (len < call->request_size)
159 pr_warning("kAFS: %s: Request buffer underflow (%zu<%u)\n",
160 call->type->name, len, call->request_size);
164 * Dump a bad file status record.
166 static void xdr_dump_bad(const __be32 *bp)
171 pr_notice("YFS XDR: Bad status record\n");
172 for (i = 0; i < 5 * 4 * 4; i += 16) {
175 pr_notice("%03x: %08x %08x %08x %08x\n",
176 i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
180 pr_notice("0x50: %08x\n", ntohl(x[0]));
184 * Decode a YFSFetchStatus block
186 static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
187 struct afs_call *call,
188 struct afs_status_cb *scb)
190 const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
191 struct afs_file_status *status = &scb->status;
194 status->abort_code = ntohl(xdr->abort_code);
195 if (status->abort_code != 0) {
196 if (status->abort_code == VNOVNODE)
198 scb->have_error = true;
202 type = ntohl(xdr->type);
206 case AFS_FTYPE_SYMLINK:
213 status->nlink = ntohl(xdr->nlink);
214 status->author = xdr_to_u64(xdr->author);
215 status->owner = xdr_to_u64(xdr->owner);
216 status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
217 status->anon_access = ntohl(xdr->anon_access);
218 status->mode = ntohl(xdr->mode) & S_IALLUGO;
219 status->group = xdr_to_u64(xdr->group);
220 status->lock_count = ntohl(xdr->lock_count);
222 status->mtime_client = xdr_to_time(xdr->mtime_client);
223 status->mtime_server = xdr_to_time(xdr->mtime_server);
224 status->size = xdr_to_u64(xdr->size);
225 status->data_version = xdr_to_u64(xdr->data_version);
226 scb->have_status = true;
228 *_bp += xdr_size(xdr);
233 return 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);
458 /* Fall through - and extract the returned data length */
460 _debug("extract data length");
461 ret = afs_extract_data(call, true);
465 req->actual_len = be64_to_cpu(call->tmp64);
466 _debug("DATA length: %llu", req->actual_len);
467 req->remain = min(req->len, req->actual_len);
468 if (req->remain == 0)
474 ASSERTCMP(req->index, <, req->nr_pages);
475 if (req->remain > PAGE_SIZE - req->offset)
476 size = PAGE_SIZE - req->offset;
479 call->bvec[0].bv_len = size;
480 call->bvec[0].bv_offset = req->offset;
481 call->bvec[0].bv_page = req->pages[req->index];
482 iov_iter_bvec(&call->iter, READ, call->bvec, 1, size);
483 ASSERTCMP(size, <=, PAGE_SIZE);
485 /* Fall through - and extract the returned data */
487 _debug("extract data %zu/%llu",
488 iov_iter_count(&call->iter), req->remain);
490 ret = afs_extract_data(call, true);
493 req->remain -= call->bvec[0].bv_len;
494 req->offset += call->bvec[0].bv_len;
495 ASSERTCMP(req->offset, <=, PAGE_SIZE);
496 if (req->offset == PAGE_SIZE) {
505 ASSERTCMP(req->remain, ==, 0);
506 if (req->actual_len <= req->len)
509 /* Discard any excess data the server gave us */
510 iov_iter_discard(&call->iter, READ, req->actual_len - req->len);
511 call->unmarshall = 3;
515 _debug("extract discard %zu/%llu",
516 iov_iter_count(&call->iter), req->actual_len - req->len);
518 ret = afs_extract_data(call, true);
523 call->unmarshall = 4;
524 afs_extract_to_buf(call,
525 sizeof(struct yfs_xdr_YFSFetchStatus) +
526 sizeof(struct yfs_xdr_YFSCallBack) +
527 sizeof(struct yfs_xdr_YFSVolSync));
529 /* Fall through - and extract the metadata */
531 ret = afs_extract_data(call, false);
536 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
539 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
540 xdr_decode_YFSVolSync(&bp, call->out_volsync);
542 req->data_version = call->out_scb->status.data_version;
543 req->file_size = call->out_scb->status.size;
552 for (; req->index < req->nr_pages; req->index++) {
553 if (req->offset < PAGE_SIZE)
554 zero_user_segment(req->pages[req->index],
555 req->offset, PAGE_SIZE);
561 _leave(" = 0 [done]");
565 static void yfs_fetch_data_destructor(struct afs_call *call)
567 afs_put_read(call->read_request);
568 afs_flat_call_destructor(call);
572 * YFS.FetchData64 operation type
574 static const struct afs_call_type yfs_RXYFSFetchData64 = {
575 .name = "YFS.FetchData64",
576 .op = yfs_FS_FetchData64,
577 .deliver = yfs_deliver_fs_fetch_data64,
578 .destructor = yfs_fetch_data_destructor,
582 * Fetch data from a file.
584 int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
585 struct afs_read *req)
587 struct afs_vnode *vnode = fc->vnode;
588 struct afs_call *call;
589 struct afs_net *net = afs_v2net(vnode);
592 _enter(",%x,{%llx:%llu},%llx,%llx",
593 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode,
596 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64,
598 sizeof(struct yfs_xdr_YFSFid) +
599 sizeof(struct yfs_xdr_u64) * 2,
600 sizeof(struct yfs_xdr_YFSFetchStatus) +
601 sizeof(struct yfs_xdr_YFSCallBack) +
602 sizeof(struct yfs_xdr_YFSVolSync));
608 call->out_volsync = NULL;
609 call->read_request = req;
611 /* marshall the parameters */
613 bp = xdr_encode_u32(bp, YFSFETCHDATA64);
614 bp = xdr_encode_u32(bp, 0); /* RPC flags */
615 bp = xdr_encode_YFSFid(bp, &vnode->fid);
616 bp = xdr_encode_u64(bp, req->pos);
617 bp = xdr_encode_u64(bp, req->len);
618 yfs_check_req(call, bp);
620 refcount_inc(&req->usage);
621 afs_use_fs_server(call, fc->cbi);
622 trace_afs_make_fs_call(call, &vnode->fid);
623 afs_set_fc_call(call, fc);
624 afs_make_call(&fc->ac, call, GFP_NOFS);
625 return afs_wait_for_call_to_complete(call, &fc->ac);
629 * Deliver reply data for YFS.CreateFile or YFS.MakeDir.
631 static int yfs_deliver_fs_create_vnode(struct afs_call *call)
636 _enter("{%u}", call->unmarshall);
638 ret = afs_transfer_reply(call);
642 /* unmarshall the reply once we've received all of it */
644 xdr_decode_YFSFid(&bp, call->out_fid);
645 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
648 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
651 xdr_decode_YFSCallBack(&bp, call, call->out_scb);
652 xdr_decode_YFSVolSync(&bp, call->out_volsync);
654 _leave(" = 0 [done]");
659 * FS.CreateFile and FS.MakeDir operation type
661 static const struct afs_call_type afs_RXFSCreateFile = {
662 .name = "YFS.CreateFile",
663 .op = yfs_FS_CreateFile,
664 .deliver = yfs_deliver_fs_create_vnode,
665 .destructor = afs_flat_call_destructor,
671 int yfs_fs_create_file(struct afs_fs_cursor *fc,
674 struct afs_status_cb *dvnode_scb,
675 struct afs_fid *newfid,
676 struct afs_status_cb *new_scb)
678 struct afs_vnode *dvnode = fc->vnode;
679 struct afs_call *call;
680 struct afs_net *net = afs_v2net(dvnode);
681 size_t namesz, reqsz, rplsz;
686 namesz = strlen(name);
687 reqsz = (sizeof(__be32) +
689 sizeof(struct yfs_xdr_YFSFid) +
691 sizeof(struct yfs_xdr_YFSStoreStatus) +
693 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
694 sizeof(struct yfs_xdr_YFSFetchStatus) +
695 sizeof(struct yfs_xdr_YFSFetchStatus) +
696 sizeof(struct yfs_xdr_YFSCallBack) +
697 sizeof(struct yfs_xdr_YFSVolSync));
699 call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz);
704 call->out_dir_scb = dvnode_scb;
705 call->out_fid = newfid;
706 call->out_scb = new_scb;
708 /* marshall the parameters */
710 bp = xdr_encode_u32(bp, YFSCREATEFILE);
711 bp = xdr_encode_u32(bp, 0); /* RPC flags */
712 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
713 bp = xdr_encode_string(bp, name, namesz);
714 bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
715 bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */
716 yfs_check_req(call, bp);
718 afs_use_fs_server(call, fc->cbi);
719 trace_afs_make_fs_call1(call, &dvnode->fid, name);
720 afs_set_fc_call(call, fc);
721 afs_make_call(&fc->ac, call, GFP_NOFS);
722 return afs_wait_for_call_to_complete(call, &fc->ac);
725 static const struct afs_call_type yfs_RXFSMakeDir = {
726 .name = "YFS.MakeDir",
727 .op = yfs_FS_MakeDir,
728 .deliver = yfs_deliver_fs_create_vnode,
729 .destructor = afs_flat_call_destructor,
735 int yfs_fs_make_dir(struct afs_fs_cursor *fc,
738 struct afs_status_cb *dvnode_scb,
739 struct afs_fid *newfid,
740 struct afs_status_cb *new_scb)
742 struct afs_vnode *dvnode = fc->vnode;
743 struct afs_call *call;
744 struct afs_net *net = afs_v2net(dvnode);
745 size_t namesz, reqsz, rplsz;
750 namesz = strlen(name);
751 reqsz = (sizeof(__be32) +
752 sizeof(struct yfs_xdr_RPCFlags) +
753 sizeof(struct yfs_xdr_YFSFid) +
755 sizeof(struct yfs_xdr_YFSStoreStatus));
756 rplsz = (sizeof(struct yfs_xdr_YFSFid) +
757 sizeof(struct yfs_xdr_YFSFetchStatus) +
758 sizeof(struct yfs_xdr_YFSFetchStatus) +
759 sizeof(struct yfs_xdr_YFSCallBack) +
760 sizeof(struct yfs_xdr_YFSVolSync));
762 call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz);
767 call->out_dir_scb = dvnode_scb;
768 call->out_fid = newfid;
769 call->out_scb = new_scb;
771 /* marshall the parameters */
773 bp = xdr_encode_u32(bp, YFSMAKEDIR);
774 bp = xdr_encode_u32(bp, 0); /* RPC flags */
775 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
776 bp = xdr_encode_string(bp, name, namesz);
777 bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
778 yfs_check_req(call, bp);
780 afs_use_fs_server(call, fc->cbi);
781 trace_afs_make_fs_call1(call, &dvnode->fid, name);
782 afs_set_fc_call(call, fc);
783 afs_make_call(&fc->ac, call, GFP_NOFS);
784 return afs_wait_for_call_to_complete(call, &fc->ac);
788 * Deliver reply data to a YFS.RemoveFile2 operation.
790 static int yfs_deliver_fs_remove_file2(struct afs_call *call)
796 _enter("{%u}", call->unmarshall);
798 ret = afs_transfer_reply(call);
803 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
807 xdr_decode_YFSFid(&bp, &fid);
808 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
811 /* Was deleted if vnode->status.abort_code == VNOVNODE. */
813 xdr_decode_YFSVolSync(&bp, call->out_volsync);
818 * YFS.RemoveFile2 operation type.
820 static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
821 .name = "YFS.RemoveFile2",
822 .op = yfs_FS_RemoveFile2,
823 .deliver = yfs_deliver_fs_remove_file2,
824 .destructor = afs_flat_call_destructor,
828 * Remove a file and retrieve new file status.
830 int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
831 const char *name, struct afs_status_cb *dvnode_scb,
832 struct afs_status_cb *vnode_scb)
834 struct afs_vnode *dvnode = fc->vnode;
835 struct afs_call *call;
836 struct afs_net *net = afs_v2net(dvnode);
842 namesz = strlen(name);
844 call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2,
846 sizeof(struct yfs_xdr_RPCFlags) +
847 sizeof(struct yfs_xdr_YFSFid) +
849 sizeof(struct yfs_xdr_YFSFetchStatus) +
850 sizeof(struct yfs_xdr_YFSFid) +
851 sizeof(struct yfs_xdr_YFSFetchStatus) +
852 sizeof(struct yfs_xdr_YFSVolSync));
857 call->out_dir_scb = dvnode_scb;
858 call->out_scb = vnode_scb;
860 /* marshall the parameters */
862 bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
863 bp = xdr_encode_u32(bp, 0); /* RPC flags */
864 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
865 bp = xdr_encode_string(bp, name, namesz);
866 yfs_check_req(call, bp);
868 afs_use_fs_server(call, fc->cbi);
869 trace_afs_make_fs_call1(call, &dvnode->fid, name);
870 afs_set_fc_call(call, fc);
871 afs_make_call(&fc->ac, call, GFP_NOFS);
872 return afs_wait_for_call_to_complete(call, &fc->ac);
876 * Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation.
878 static int yfs_deliver_fs_remove(struct afs_call *call)
883 _enter("{%u}", call->unmarshall);
885 ret = afs_transfer_reply(call);
890 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
894 xdr_decode_YFSVolSync(&bp, call->out_volsync);
899 * FS.RemoveDir and FS.RemoveFile operation types.
901 static const struct afs_call_type yfs_RXYFSRemoveFile = {
902 .name = "YFS.RemoveFile",
903 .op = yfs_FS_RemoveFile,
904 .deliver = yfs_deliver_fs_remove,
905 .destructor = afs_flat_call_destructor,
908 static const struct afs_call_type yfs_RXYFSRemoveDir = {
909 .name = "YFS.RemoveDir",
910 .op = yfs_FS_RemoveDir,
911 .deliver = yfs_deliver_fs_remove,
912 .destructor = afs_flat_call_destructor,
916 * remove a file or directory
918 int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
919 const char *name, bool isdir,
920 struct afs_status_cb *dvnode_scb)
922 struct afs_vnode *dvnode = fc->vnode;
923 struct afs_call *call;
924 struct afs_net *net = afs_v2net(dvnode);
930 namesz = strlen(name);
931 call = afs_alloc_flat_call(
932 net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile,
934 sizeof(struct yfs_xdr_RPCFlags) +
935 sizeof(struct yfs_xdr_YFSFid) +
937 sizeof(struct yfs_xdr_YFSFetchStatus) +
938 sizeof(struct yfs_xdr_YFSVolSync));
943 call->out_dir_scb = dvnode_scb;
945 /* marshall the parameters */
947 bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE);
948 bp = xdr_encode_u32(bp, 0); /* RPC flags */
949 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
950 bp = xdr_encode_string(bp, name, namesz);
951 yfs_check_req(call, bp);
953 afs_use_fs_server(call, fc->cbi);
954 trace_afs_make_fs_call1(call, &dvnode->fid, name);
955 afs_set_fc_call(call, fc);
956 afs_make_call(&fc->ac, call, GFP_NOFS);
957 return afs_wait_for_call_to_complete(call, &fc->ac);
961 * Deliver reply data to a YFS.Link operation.
963 static int yfs_deliver_fs_link(struct afs_call *call)
968 _enter("{%u}", call->unmarshall);
970 ret = afs_transfer_reply(call);
975 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
978 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
981 xdr_decode_YFSVolSync(&bp, call->out_volsync);
982 _leave(" = 0 [done]");
987 * YFS.Link operation type.
989 static const struct afs_call_type yfs_RXYFSLink = {
992 .deliver = yfs_deliver_fs_link,
993 .destructor = afs_flat_call_destructor,
999 int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
1001 struct afs_status_cb *dvnode_scb,
1002 struct afs_status_cb *vnode_scb)
1004 struct afs_vnode *dvnode = fc->vnode;
1005 struct afs_call *call;
1006 struct afs_net *net = afs_v2net(vnode);
1012 namesz = strlen(name);
1013 call = afs_alloc_flat_call(net, &yfs_RXYFSLink,
1015 sizeof(struct yfs_xdr_RPCFlags) +
1016 sizeof(struct yfs_xdr_YFSFid) +
1017 xdr_strlen(namesz) +
1018 sizeof(struct yfs_xdr_YFSFid),
1019 sizeof(struct yfs_xdr_YFSFetchStatus) +
1020 sizeof(struct yfs_xdr_YFSFetchStatus) +
1021 sizeof(struct yfs_xdr_YFSVolSync));
1025 call->key = fc->key;
1026 call->out_dir_scb = dvnode_scb;
1027 call->out_scb = vnode_scb;
1029 /* marshall the parameters */
1031 bp = xdr_encode_u32(bp, YFSLINK);
1032 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1033 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
1034 bp = xdr_encode_string(bp, name, namesz);
1035 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1036 yfs_check_req(call, bp);
1038 afs_use_fs_server(call, fc->cbi);
1039 trace_afs_make_fs_call1(call, &vnode->fid, name);
1040 afs_set_fc_call(call, fc);
1041 afs_make_call(&fc->ac, call, GFP_NOFS);
1042 return afs_wait_for_call_to_complete(call, &fc->ac);
1046 * Deliver reply data to a YFS.Symlink operation.
1048 static int yfs_deliver_fs_symlink(struct afs_call *call)
1053 _enter("{%u}", call->unmarshall);
1055 ret = afs_transfer_reply(call);
1059 /* unmarshall the reply once we've received all of it */
1061 xdr_decode_YFSFid(&bp, call->out_fid);
1062 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
1065 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
1068 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1070 _leave(" = 0 [done]");
1075 * YFS.Symlink operation type
1077 static const struct afs_call_type yfs_RXYFSSymlink = {
1078 .name = "YFS.Symlink",
1079 .op = yfs_FS_Symlink,
1080 .deliver = yfs_deliver_fs_symlink,
1081 .destructor = afs_flat_call_destructor,
1085 * Create a symbolic link.
1087 int yfs_fs_symlink(struct afs_fs_cursor *fc,
1089 const char *contents,
1090 struct afs_status_cb *dvnode_scb,
1091 struct afs_fid *newfid,
1092 struct afs_status_cb *vnode_scb)
1094 struct afs_vnode *dvnode = fc->vnode;
1095 struct afs_call *call;
1096 struct afs_net *net = afs_v2net(dvnode);
1097 size_t namesz, contents_sz;
1102 namesz = strlen(name);
1103 contents_sz = strlen(contents);
1104 call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink,
1106 sizeof(struct yfs_xdr_RPCFlags) +
1107 sizeof(struct yfs_xdr_YFSFid) +
1108 xdr_strlen(namesz) +
1109 xdr_strlen(contents_sz) +
1110 sizeof(struct yfs_xdr_YFSStoreStatus),
1111 sizeof(struct yfs_xdr_YFSFid) +
1112 sizeof(struct yfs_xdr_YFSFetchStatus) +
1113 sizeof(struct yfs_xdr_YFSFetchStatus) +
1114 sizeof(struct yfs_xdr_YFSVolSync));
1118 call->key = fc->key;
1119 call->out_dir_scb = dvnode_scb;
1120 call->out_fid = newfid;
1121 call->out_scb = vnode_scb;
1123 /* marshall the parameters */
1125 bp = xdr_encode_u32(bp, YFSSYMLINK);
1126 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1127 bp = xdr_encode_YFSFid(bp, &dvnode->fid);
1128 bp = xdr_encode_string(bp, name, namesz);
1129 bp = xdr_encode_string(bp, contents, contents_sz);
1130 bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO);
1131 yfs_check_req(call, bp);
1133 afs_use_fs_server(call, fc->cbi);
1134 trace_afs_make_fs_call1(call, &dvnode->fid, name);
1135 afs_set_fc_call(call, fc);
1136 afs_make_call(&fc->ac, call, GFP_NOFS);
1137 return afs_wait_for_call_to_complete(call, &fc->ac);
1141 * Deliver reply data to a YFS.Rename operation.
1143 static int yfs_deliver_fs_rename(struct afs_call *call)
1148 _enter("{%u}", call->unmarshall);
1150 ret = afs_transfer_reply(call);
1155 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
1158 if (call->out_dir_scb != call->out_scb) {
1159 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));
1437 /* Fall through - and extract the returned status record */
1439 _debug("extract status");
1440 ret = afs_extract_data(call, true);
1445 xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus);
1447 afs_extract_to_tmp(call);
1449 /* Fall through - and 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);
1464 /* Fall through - and extract the volume name */
1466 _debug("extract volname");
1467 ret = afs_extract_data(call, true);
1473 _debug("volname '%s'", p);
1474 afs_extract_to_tmp(call);
1477 /* Fall through - and extract the offline message length */
1479 ret = afs_extract_data(call, true);
1483 call->count = ntohl(call->tmp);
1484 _debug("offline msg length: %u", call->count);
1485 if (call->count >= AFSNAMEMAX)
1486 return afs_protocol_error(call, -EBADMSG,
1487 afs_eproto_offline_msg_len);
1488 size = (call->count + 3) & ~3; /* It's padded */
1489 afs_extract_to_buf(call, size);
1492 /* Fall through - and extract the offline message */
1494 _debug("extract offline");
1495 ret = afs_extract_data(call, true);
1501 _debug("offline '%s'", p);
1503 afs_extract_to_tmp(call);
1506 /* Fall through - and extract the message of the day length */
1508 ret = afs_extract_data(call, true);
1512 call->count = ntohl(call->tmp);
1513 _debug("motd length: %u", call->count);
1514 if (call->count >= AFSNAMEMAX)
1515 return afs_protocol_error(call, -EBADMSG,
1516 afs_eproto_motd_len);
1517 size = (call->count + 3) & ~3; /* It's padded */
1518 afs_extract_to_buf(call, size);
1521 /* Fall through - and extract the message of the day */
1523 _debug("extract motd");
1524 ret = afs_extract_data(call, false);
1530 _debug("motd '%s'", p);
1539 _leave(" = 0 [done]");
1544 * YFS.GetVolumeStatus operation type
1546 static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
1547 .name = "YFS.GetVolumeStatus",
1548 .op = yfs_FS_GetVolumeStatus,
1549 .deliver = yfs_deliver_fs_get_volume_status,
1550 .destructor = afs_flat_call_destructor,
1554 * fetch the status of a volume
1556 int yfs_fs_get_volume_status(struct afs_fs_cursor *fc,
1557 struct afs_volume_status *vs)
1559 struct afs_vnode *vnode = fc->vnode;
1560 struct afs_call *call;
1561 struct afs_net *net = afs_v2net(vnode);
1566 call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus,
1567 sizeof(__be32) * 2 +
1568 sizeof(struct yfs_xdr_u64),
1570 sizeof(struct yfs_xdr_YFSFetchVolumeStatus) +
1576 call->key = fc->key;
1577 call->out_volstatus = vs;
1579 /* marshall the parameters */
1581 bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
1582 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1583 bp = xdr_encode_u64(bp, vnode->fid.vid);
1584 yfs_check_req(call, bp);
1586 afs_use_fs_server(call, fc->cbi);
1587 trace_afs_make_fs_call(call, &vnode->fid);
1588 afs_set_fc_call(call, fc);
1589 afs_make_call(&fc->ac, call, GFP_NOFS);
1590 return afs_wait_for_call_to_complete(call, &fc->ac);
1594 * YFS.SetLock operation type
1596 static const struct afs_call_type yfs_RXYFSSetLock = {
1597 .name = "YFS.SetLock",
1598 .op = yfs_FS_SetLock,
1599 .deliver = yfs_deliver_status_and_volsync,
1600 .done = afs_lock_op_done,
1601 .destructor = afs_flat_call_destructor,
1605 * YFS.ExtendLock operation type
1607 static const struct afs_call_type yfs_RXYFSExtendLock = {
1608 .name = "YFS.ExtendLock",
1609 .op = yfs_FS_ExtendLock,
1610 .deliver = yfs_deliver_status_and_volsync,
1611 .done = afs_lock_op_done,
1612 .destructor = afs_flat_call_destructor,
1616 * YFS.ReleaseLock operation type
1618 static const struct afs_call_type yfs_RXYFSReleaseLock = {
1619 .name = "YFS.ReleaseLock",
1620 .op = yfs_FS_ReleaseLock,
1621 .deliver = yfs_deliver_status_and_volsync,
1622 .destructor = afs_flat_call_destructor,
1626 * Set a lock on a file
1628 int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type,
1629 struct afs_status_cb *scb)
1631 struct afs_vnode *vnode = fc->vnode;
1632 struct afs_call *call;
1633 struct afs_net *net = afs_v2net(vnode);
1638 call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock,
1639 sizeof(__be32) * 2 +
1640 sizeof(struct yfs_xdr_YFSFid) +
1642 sizeof(struct yfs_xdr_YFSFetchStatus) +
1643 sizeof(struct yfs_xdr_YFSVolSync));
1647 call->key = fc->key;
1648 call->lvnode = vnode;
1649 call->out_scb = scb;
1651 /* marshall the parameters */
1653 bp = xdr_encode_u32(bp, YFSSETLOCK);
1654 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1655 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1656 bp = xdr_encode_u32(bp, type);
1657 yfs_check_req(call, bp);
1659 afs_use_fs_server(call, fc->cbi);
1660 trace_afs_make_fs_calli(call, &vnode->fid, type);
1661 afs_set_fc_call(call, fc);
1662 afs_make_call(&fc->ac, call, GFP_NOFS);
1663 return afs_wait_for_call_to_complete(call, &fc->ac);
1667 * extend a lock on a file
1669 int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1671 struct afs_vnode *vnode = fc->vnode;
1672 struct afs_call *call;
1673 struct afs_net *net = afs_v2net(vnode);
1678 call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock,
1679 sizeof(__be32) * 2 +
1680 sizeof(struct yfs_xdr_YFSFid),
1681 sizeof(struct yfs_xdr_YFSFetchStatus) +
1682 sizeof(struct yfs_xdr_YFSVolSync));
1686 call->key = fc->key;
1687 call->lvnode = vnode;
1688 call->out_scb = scb;
1690 /* marshall the parameters */
1692 bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
1693 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1694 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1695 yfs_check_req(call, bp);
1697 afs_use_fs_server(call, fc->cbi);
1698 trace_afs_make_fs_call(call, &vnode->fid);
1699 afs_set_fc_call(call, fc);
1700 afs_make_call(&fc->ac, call, GFP_NOFS);
1701 return afs_wait_for_call_to_complete(call, &fc->ac);
1705 * release a lock on a file
1707 int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
1709 struct afs_vnode *vnode = fc->vnode;
1710 struct afs_call *call;
1711 struct afs_net *net = afs_v2net(vnode);
1716 call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock,
1717 sizeof(__be32) * 2 +
1718 sizeof(struct yfs_xdr_YFSFid),
1719 sizeof(struct yfs_xdr_YFSFetchStatus) +
1720 sizeof(struct yfs_xdr_YFSVolSync));
1724 call->key = fc->key;
1725 call->lvnode = vnode;
1726 call->out_scb = scb;
1728 /* marshall the parameters */
1730 bp = xdr_encode_u32(bp, YFSRELEASELOCK);
1731 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1732 bp = xdr_encode_YFSFid(bp, &vnode->fid);
1733 yfs_check_req(call, bp);
1735 afs_use_fs_server(call, fc->cbi);
1736 trace_afs_make_fs_call(call, &vnode->fid);
1737 afs_set_fc_call(call, fc);
1738 afs_make_call(&fc->ac, call, GFP_NOFS);
1739 return afs_wait_for_call_to_complete(call, &fc->ac);
1743 * YFS.FetchStatus operation type
1745 static const struct afs_call_type yfs_RXYFSFetchStatus = {
1746 .name = "YFS.FetchStatus",
1747 .op = yfs_FS_FetchStatus,
1748 .deliver = yfs_deliver_fs_status_cb_and_volsync,
1749 .destructor = afs_flat_call_destructor,
1753 * Fetch the status information for a fid without needing a vnode handle.
1755 int yfs_fs_fetch_status(struct afs_fs_cursor *fc,
1756 struct afs_net *net,
1757 struct afs_fid *fid,
1758 struct afs_status_cb *scb,
1759 struct afs_volsync *volsync)
1761 struct afs_call *call;
1764 _enter(",%x,{%llx:%llu},,",
1765 key_serial(fc->key), fid->vid, fid->vnode);
1767 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus,
1768 sizeof(__be32) * 2 +
1769 sizeof(struct yfs_xdr_YFSFid),
1770 sizeof(struct yfs_xdr_YFSFetchStatus) +
1771 sizeof(struct yfs_xdr_YFSCallBack) +
1772 sizeof(struct yfs_xdr_YFSVolSync));
1774 fc->ac.error = -ENOMEM;
1778 call->key = fc->key;
1779 call->out_scb = scb;
1780 call->out_volsync = volsync;
1782 /* marshall the parameters */
1784 bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
1785 bp = xdr_encode_u32(bp, 0); /* RPC flags */
1786 bp = xdr_encode_YFSFid(bp, fid);
1787 yfs_check_req(call, bp);
1789 afs_use_fs_server(call, fc->cbi);
1790 trace_afs_make_fs_call(call, fid);
1791 afs_set_fc_call(call, fc);
1792 afs_make_call(&fc->ac, call, GFP_NOFS);
1793 return afs_wait_for_call_to_complete(call, &fc->ac);
1797 * Deliver reply data to an YFS.InlineBulkStatus call
1799 static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
1801 struct afs_status_cb *scb;
1806 _enter("{%u}", call->unmarshall);
1808 switch (call->unmarshall) {
1810 afs_extract_to_tmp(call);
1813 /* Extract the file status count and array in two steps */
1816 _debug("extract status count");
1817 ret = afs_extract_data(call, true);
1821 tmp = ntohl(call->tmp);
1822 _debug("status count: %u/%u", tmp, call->count2);
1823 if (tmp != call->count2)
1824 return afs_protocol_error(call, -EBADMSG,
1825 afs_eproto_ibulkst_count);
1830 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus));
1834 _debug("extract status array %u", call->count);
1835 ret = afs_extract_data(call, true);
1840 scb = &call->out_scb[call->count];
1841 ret = xdr_decode_YFSFetchStatus(&bp, call, scb);
1846 if (call->count < call->count2)
1851 afs_extract_to_tmp(call);
1853 /* Extract the callback count and array in two steps */
1856 _debug("extract CB count");
1857 ret = afs_extract_data(call, true);
1861 tmp = ntohl(call->tmp);
1862 _debug("CB count: %u", tmp);
1863 if (tmp != call->count2)
1864 return afs_protocol_error(call, -EBADMSG,
1865 afs_eproto_ibulkst_cb_count);
1869 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack));
1873 _debug("extract CB array");
1874 ret = afs_extract_data(call, true);
1878 _debug("unmarshall CB array");
1880 scb = &call->out_scb[call->count];
1881 xdr_decode_YFSCallBack(&bp, call, scb);
1883 if (call->count < call->count2)
1886 afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
1891 ret = afs_extract_data(call, false);
1896 xdr_decode_YFSVolSync(&bp, call->out_volsync);
1905 _leave(" = 0 [done]");
1910 * FS.InlineBulkStatus operation type
1912 static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
1913 .name = "YFS.InlineBulkStatus",
1914 .op = yfs_FS_InlineBulkStatus,
1915 .deliver = yfs_deliver_fs_inline_bulk_status,
1916 .destructor = afs_flat_call_destructor,
1920 * Fetch the status information for up to 1024 files
1922 int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
1923 struct afs_net *net,
1924 struct afs_fid *fids,
1925 struct afs_status_cb *statuses,
1926 unsigned int nr_fids,
1927 struct afs_volsync *volsync)
1929 struct afs_call *call;
1933 _enter(",%x,{%llx:%llu},%u",
1934 key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
1936 call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus,
1940 sizeof(struct yfs_xdr_YFSFid) * nr_fids,
1941 sizeof(struct yfs_xdr_YFSFetchStatus));
1943 fc->ac.error = -ENOMEM;
1947 call->key = fc->key;
1948 call->out_scb = statuses;
1949 call->out_volsync = volsync;
1950 call->count2 = nr_fids;
1952 /* marshall the parameters */
1954 bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
1955 bp = xdr_encode_u32(bp, 0); /* RPCFlags */
1956 bp = xdr_encode_u32(bp, nr_fids);
1957 for (i = 0; i < nr_fids; i++)
1958 bp = xdr_encode_YFSFid(bp, &fids[i]);
1959 yfs_check_req(call, bp);
1961 afs_use_fs_server(call, fc->cbi);
1962 trace_afs_make_fs_call(call, &fids[0]);
1963 afs_set_fc_call(call, fc);
1964 afs_make_call(&fc->ac, call, GFP_NOFS);
1965 return afs_wait_for_call_to_complete(call, &fc->ac);
1969 * Deliver reply data to an YFS.FetchOpaqueACL.
1971 static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
1973 struct yfs_acl *yacl = call->out_yacl;
1974 struct afs_acl *acl;
1979 _enter("{%u}", call->unmarshall);
1981 switch (call->unmarshall) {
1983 afs_extract_to_tmp(call);
1986 /* Extract the file ACL length */
1988 ret = afs_extract_data(call, true);
1992 size = call->count2 = ntohl(call->tmp);
1993 size = round_up(size, 4);
1995 if (yacl->flags & YFS_ACL_WANT_ACL) {
1996 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2000 acl->size = call->count2;
2001 afs_extract_begin(call, acl->data, size);
2003 iov_iter_discard(&call->iter, READ, size);
2007 /* Extract the file ACL */
2009 ret = afs_extract_data(call, true);
2013 afs_extract_to_tmp(call);
2016 /* Extract the volume ACL length */
2018 ret = afs_extract_data(call, true);
2022 size = call->count2 = ntohl(call->tmp);
2023 size = round_up(size, 4);
2025 if (yacl->flags & YFS_ACL_WANT_VOL_ACL) {
2026 acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
2029 yacl->vol_acl = acl;
2030 acl->size = call->count2;
2031 afs_extract_begin(call, acl->data, size);
2033 iov_iter_discard(&call->iter, READ, size);
2037 /* Extract the volume ACL */
2039 ret = afs_extract_data(call, true);
2043 afs_extract_to_buf(call,
2044 sizeof(__be32) * 2 +
2045 sizeof(struct yfs_xdr_YFSFetchStatus) +
2046 sizeof(struct yfs_xdr_YFSVolSync));
2049 /* extract the metadata */
2051 ret = afs_extract_data(call, false);
2056 yacl->inherit_flag = ntohl(*bp++);
2057 yacl->num_cleaned = ntohl(*bp++);
2058 ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
2061 xdr_decode_YFSVolSync(&bp, call->out_volsync);
2069 _leave(" = 0 [done]");
2073 void yfs_free_opaque_acl(struct yfs_acl *yacl)
2077 kfree(yacl->vol_acl);
2083 * YFS.FetchOpaqueACL operation type
2085 static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = {
2086 .name = "YFS.FetchOpaqueACL",
2087 .op = yfs_FS_FetchOpaqueACL,
2088 .deliver = yfs_deliver_fs_fetch_opaque_acl,
2089 .destructor = afs_flat_call_destructor,
2093 * Fetch the YFS advanced ACLs for a file.
2095 struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc,
2096 struct yfs_acl *yacl,
2097 struct afs_status_cb *scb)
2099 struct afs_vnode *vnode = fc->vnode;
2100 struct afs_call *call;
2101 struct afs_net *net = afs_v2net(vnode);
2104 _enter(",%x,{%llx:%llu},,",
2105 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2107 call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL,
2108 sizeof(__be32) * 2 +
2109 sizeof(struct yfs_xdr_YFSFid),
2110 sizeof(__be32) * 2 +
2111 sizeof(struct yfs_xdr_YFSFetchStatus) +
2112 sizeof(struct yfs_xdr_YFSVolSync));
2114 fc->ac.error = -ENOMEM;
2115 return ERR_PTR(-ENOMEM);
2118 call->key = fc->key;
2119 call->out_yacl = yacl;
2120 call->out_scb = scb;
2121 call->out_volsync = NULL;
2123 /* marshall the parameters */
2125 bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL);
2126 bp = xdr_encode_u32(bp, 0); /* RPC flags */
2127 bp = xdr_encode_YFSFid(bp, &vnode->fid);
2128 yfs_check_req(call, bp);
2130 afs_use_fs_server(call, fc->cbi);
2131 trace_afs_make_fs_call(call, &vnode->fid);
2132 afs_make_call(&fc->ac, call, GFP_KERNEL);
2133 return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac);
2137 * YFS.StoreOpaqueACL2 operation type
2139 static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = {
2140 .name = "YFS.StoreOpaqueACL2",
2141 .op = yfs_FS_StoreOpaqueACL2,
2142 .deliver = yfs_deliver_status_and_volsync,
2143 .destructor = afs_flat_call_destructor,
2147 * Fetch the YFS ACL for a file.
2149 int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl,
2150 struct afs_status_cb *scb)
2152 struct afs_vnode *vnode = fc->vnode;
2153 struct afs_call *call;
2154 struct afs_net *net = afs_v2net(vnode);
2158 _enter(",%x,{%llx:%llu},,",
2159 key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
2161 size = round_up(acl->size, 4);
2162 call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus,
2163 sizeof(__be32) * 2 +
2164 sizeof(struct yfs_xdr_YFSFid) +
2165 sizeof(__be32) + size,
2166 sizeof(struct yfs_xdr_YFSFetchStatus) +
2167 sizeof(struct yfs_xdr_YFSVolSync));
2169 fc->ac.error = -ENOMEM;
2173 call->key = fc->key;
2174 call->out_scb = scb;
2175 call->out_volsync = NULL;
2177 /* marshall the parameters */
2179 bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2);
2180 bp = xdr_encode_u32(bp, 0); /* RPC flags */
2181 bp = xdr_encode_YFSFid(bp, &vnode->fid);
2182 bp = xdr_encode_u32(bp, acl->size);
2183 memcpy(bp, acl->data, acl->size);
2184 if (acl->size != size)
2185 memset((void *)bp + acl->size, 0, size - acl->size);
2186 yfs_check_req(call, bp);
2188 trace_afs_make_fs_call(call, &vnode->fid);
2189 afs_make_call(&fc->ac, call, GFP_KERNEL);
2190 return afs_wait_for_call_to_complete(call, &fc->ac);