123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464146514661467146814691470147114721473147414751476147714781479148014811482148314841485148614871488148914901491149214931494149514961497149814991500150115021503150415051506150715081509151015111512151315141515151615171518151915201521152215231524152515261527152815291530153115321533153415351536153715381539154015411542154315441545154615471548154915501551155215531554155515561557155815591560156115621563156415651566156715681569157015711572157315741575157615771578157915801581158215831584158515861587158815891590159115921593159415951596159715981599160016011602160316041605160616071608160916101611161216131614161516161617161816191620162116221623162416251626162716281629163016311632163316341635163616371638163916401641164216431644164516461647164816491650165116521653165416551656165716581659166016611662166316641665166616671668166916701671167216731674167516761677167816791680168116821683168416851686168716881689169016911692169316941695169616971698169917001701170217031704170517061707170817091710171117121713171417151716171717181719172017211722172317241725172617271728172917301731173217331734173517361737173817391740174117421743174417451746174717481749175017511752175317541755175617571758175917601761176217631764176517661767176817691770177117721773177417751776177717781779178017811782178317841785178617871788178917901791179217931794179517961797179817991800180118021803180418051806180718081809181018111812181318141815181618171818181918201821182218231824182518261827182818291830183118321833183418351836183718381839184018411842184318441845184618471848184918501851185218531854185518561857185818591860186118621863186418651866186718681869187018711872187318741875187618771878187918801881188218831884188518861887188818891890189118921893189418951896189718981899190019011902190319041905190619071908190919101911191219131914191519161917191819191920192119221923192419251926192719281929193019311932193319341935193619371938193919401941194219431944194519461947194819491950195119521953195419551956195719581959196019611962196319641965196619671968196919701971197219731974197519761977197819791980198119821983198419851986198719881989199019911992199319941995199619971998199920002001200220032004200520062007200820092010201120122013201420152016201720182019202020212022202320242025202620272028202920302031203220332034203520362037203820392040204120422043204420452046204720482049205020512052205320542055205620572058205920602061206220632064206520662067206820692070207120722073207420752076207720782079208020812082208320842085208620872088208920902091209220932094209520962097209820992100210121022103210421052106 |
- // SPDX-License-Identifier: GPL-2.0-or-later
- /* AFS File Server client stubs
- *
- * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- */
- #include <linux/init.h>
- #include <linux/slab.h>
- #include <linux/sched.h>
- #include <linux/circ_buf.h>
- #include <linux/iversion.h>
- #include "internal.h"
- #include "afs_fs.h"
- #include "xdr_fs.h"
- /*
- * decode an AFSFid block
- */
- static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid)
- {
- const __be32 *bp = *_bp;
- fid->vid = ntohl(*bp++);
- fid->vnode = ntohl(*bp++);
- fid->unique = ntohl(*bp++);
- *_bp = bp;
- }
- /*
- * Dump a bad file status record.
- */
- static void xdr_dump_bad(const __be32 *bp)
- {
- __be32 x[4];
- int i;
- pr_notice("AFS XDR: Bad status record\n");
- for (i = 0; i < 5 * 4 * 4; i += 16) {
- memcpy(x, bp, 16);
- bp += 4;
- pr_notice("%03x: %08x %08x %08x %08x\n",
- i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
- }
- memcpy(x, bp, 4);
- pr_notice("0x50: %08x\n", ntohl(x[0]));
- }
- /*
- * decode an AFSFetchStatus block
- */
- static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
- struct afs_call *call,
- struct afs_status_cb *scb)
- {
- const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
- struct afs_file_status *status = &scb->status;
- bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus);
- u64 data_version, size;
- u32 type, abort_code;
- abort_code = ntohl(xdr->abort_code);
- if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) {
- if (xdr->if_version == htonl(0) &&
- abort_code != 0 &&
- inline_error) {
- /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus
- * whereby it doesn't set the interface version in the error
- * case.
- */
- status->abort_code = abort_code;
- scb->have_error = true;
- goto advance;
- }
- pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
- goto bad;
- }
- if (abort_code != 0 && inline_error) {
- status->abort_code = abort_code;
- scb->have_error = true;
- goto advance;
- }
- type = ntohl(xdr->type);
- switch (type) {
- case AFS_FTYPE_FILE:
- case AFS_FTYPE_DIR:
- case AFS_FTYPE_SYMLINK:
- status->type = type;
- break;
- default:
- goto bad;
- }
- status->nlink = ntohl(xdr->nlink);
- status->author = ntohl(xdr->author);
- status->owner = ntohl(xdr->owner);
- status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */
- status->anon_access = ntohl(xdr->anon_access);
- status->mode = ntohl(xdr->mode) & S_IALLUGO;
- status->group = ntohl(xdr->group);
- status->lock_count = ntohl(xdr->lock_count);
- status->mtime_client.tv_sec = ntohl(xdr->mtime_client);
- status->mtime_client.tv_nsec = 0;
- status->mtime_server.tv_sec = ntohl(xdr->mtime_server);
- status->mtime_server.tv_nsec = 0;
- size = (u64)ntohl(xdr->size_lo);
- size |= (u64)ntohl(xdr->size_hi) << 32;
- status->size = size;
- data_version = (u64)ntohl(xdr->data_version_lo);
- data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
- status->data_version = data_version;
- scb->have_status = true;
- advance:
- *_bp = (const void *)*_bp + sizeof(*xdr);
- return;
- bad:
- xdr_dump_bad(*_bp);
- afs_protocol_error(call, afs_eproto_bad_status);
- goto advance;
- }
- static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry)
- {
- return ktime_divns(call->reply_time, NSEC_PER_SEC) + expiry;
- }
- static void xdr_decode_AFSCallBack(const __be32 **_bp,
- struct afs_call *call,
- struct afs_status_cb *scb)
- {
- struct afs_callback *cb = &scb->callback;
- const __be32 *bp = *_bp;
- bp++; /* version */
- cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++));
- bp++; /* type */
- scb->have_cb = true;
- *_bp = bp;
- }
- /*
- * decode an AFSVolSync block
- */
- static void xdr_decode_AFSVolSync(const __be32 **_bp,
- struct afs_volsync *volsync)
- {
- const __be32 *bp = *_bp;
- u32 creation;
- creation = ntohl(*bp++);
- bp++; /* spare2 */
- bp++; /* spare3 */
- bp++; /* spare4 */
- bp++; /* spare5 */
- bp++; /* spare6 */
- *_bp = bp;
- if (volsync)
- volsync->creation = creation;
- }
- /*
- * encode the requested attributes into an AFSStoreStatus block
- */
- static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr)
- {
- __be32 *bp = *_bp;
- u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0;
- mask = 0;
- if (attr->ia_valid & ATTR_MTIME) {
- mask |= AFS_SET_MTIME;
- mtime = attr->ia_mtime.tv_sec;
- }
- if (attr->ia_valid & ATTR_UID) {
- mask |= AFS_SET_OWNER;
- owner = from_kuid(&init_user_ns, attr->ia_uid);
- }
- if (attr->ia_valid & ATTR_GID) {
- mask |= AFS_SET_GROUP;
- group = from_kgid(&init_user_ns, attr->ia_gid);
- }
- if (attr->ia_valid & ATTR_MODE) {
- mask |= AFS_SET_MODE;
- mode = attr->ia_mode & S_IALLUGO;
- }
- *bp++ = htonl(mask);
- *bp++ = htonl(mtime);
- *bp++ = htonl(owner);
- *bp++ = htonl(group);
- *bp++ = htonl(mode);
- *bp++ = 0; /* segment size */
- *_bp = bp;
- }
- /*
- * decode an AFSFetchVolumeStatus block
- */
- static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
- struct afs_volume_status *vs)
- {
- const __be32 *bp = *_bp;
- vs->vid = ntohl(*bp++);
- vs->parent_id = ntohl(*bp++);
- vs->online = ntohl(*bp++);
- vs->in_service = ntohl(*bp++);
- vs->blessed = ntohl(*bp++);
- vs->needs_salvage = ntohl(*bp++);
- vs->type = ntohl(*bp++);
- vs->min_quota = ntohl(*bp++);
- vs->max_quota = ntohl(*bp++);
- vs->blocks_in_use = ntohl(*bp++);
- vs->part_blocks_avail = ntohl(*bp++);
- vs->part_max_blocks = ntohl(*bp++);
- vs->vol_copy_date = 0;
- vs->vol_backup_date = 0;
- *_bp = bp;
- }
- /*
- * deliver reply data to an FS.FetchStatus
- */
- static int afs_deliver_fs_fetch_status(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
- const __be32 *bp;
- int ret;
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
- xdr_decode_AFSCallBack(&bp, call, &vp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.FetchStatus operation type
- */
- static const struct afs_call_type afs_RXFSFetchStatus = {
- .name = "FS.FetchStatus",
- .op = afs_FS_FetchStatus,
- .deliver = afs_deliver_fs_fetch_status,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * fetch the status information for a file
- */
- void afs_fs_fetch_status(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
- struct afs_call *call;
- __be32 *bp;
- _enter(",%x,{%llx:%llu},,",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(op->net, &afs_RXFSFetchStatus,
- 16, (21 + 3 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- bp[0] = htonl(FSFETCHSTATUS);
- bp[1] = htonl(vp->fid.vid);
- bp[2] = htonl(vp->fid.vnode);
- bp[3] = htonl(vp->fid.unique);
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * deliver reply data to an FS.FetchData
- */
- static int afs_deliver_fs_fetch_data(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_read *req = op->fetch.req;
- const __be32 *bp;
- unsigned int size;
- int ret;
- _enter("{%u,%zu/%llu}",
- call->unmarshall, iov_iter_count(call->iter), req->actual_len);
- switch (call->unmarshall) {
- case 0:
- req->actual_len = 0;
- req->index = 0;
- req->offset = req->pos & (PAGE_SIZE - 1);
- call->unmarshall++;
- if (call->operation_ID == FSFETCHDATA64) {
- afs_extract_to_tmp64(call);
- } else {
- call->tmp_u = htonl(0);
- afs_extract_to_tmp(call);
- }
- fallthrough;
- /* extract the returned data length */
- case 1:
- _debug("extract data length");
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- req->actual_len = be64_to_cpu(call->tmp64);
- _debug("DATA length: %llu", req->actual_len);
- req->remain = min(req->len, req->actual_len);
- if (req->remain == 0)
- goto no_more_data;
- call->unmarshall++;
- begin_page:
- ASSERTCMP(req->index, <, req->nr_pages);
- if (req->remain > PAGE_SIZE - req->offset)
- size = PAGE_SIZE - req->offset;
- else
- size = req->remain;
- call->bvec[0].bv_len = size;
- call->bvec[0].bv_offset = req->offset;
- call->bvec[0].bv_page = req->pages[req->index];
- iov_iter_bvec(&call->def_iter, READ, call->bvec, 1, size);
- ASSERTCMP(size, <=, PAGE_SIZE);
- fallthrough;
- /* extract the returned data */
- case 2:
- _debug("extract data %zu/%llu",
- iov_iter_count(call->iter), req->remain);
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- req->remain -= call->bvec[0].bv_len;
- req->offset += call->bvec[0].bv_len;
- ASSERTCMP(req->offset, <=, PAGE_SIZE);
- if (req->offset == PAGE_SIZE) {
- req->offset = 0;
- req->index++;
- if (req->remain > 0)
- goto begin_page;
- }
- ASSERTCMP(req->remain, ==, 0);
- if (req->actual_len <= req->len)
- goto no_more_data;
- /* Discard any excess data the server gave us */
- afs_extract_discard(call, req->actual_len - req->len);
- call->unmarshall = 3;
- fallthrough;
- case 3:
- _debug("extract discard %zu/%llu",
- iov_iter_count(call->iter), req->actual_len - req->len);
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- no_more_data:
- call->unmarshall = 4;
- afs_extract_to_buf(call, (21 + 3 + 6) * 4);
- fallthrough;
- /* extract the metadata */
- case 4:
- ret = afs_extract_data(call, false);
- if (ret < 0)
- return ret;
- bp = call->buffer;
- xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
- xdr_decode_AFSCallBack(&bp, call, &vp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- req->data_version = vp->scb.status.data_version;
- req->file_size = vp->scb.status.size;
- call->unmarshall++;
- case 5:
- break;
- }
- for (; req->index < req->nr_pages; req->index++) {
- if (req->offset < PAGE_SIZE)
- zero_user_segment(req->pages[req->index],
- req->offset, PAGE_SIZE);
- req->offset = 0;
- }
- if (req->page_done)
- for (req->index = 0; req->index < req->nr_pages; req->index++)
- req->page_done(req);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.FetchData operation type
- */
- static const struct afs_call_type afs_RXFSFetchData = {
- .name = "FS.FetchData",
- .op = afs_FS_FetchData,
- .deliver = afs_deliver_fs_fetch_data,
- .destructor = afs_flat_call_destructor,
- };
- static const struct afs_call_type afs_RXFSFetchData64 = {
- .name = "FS.FetchData64",
- .op = afs_FS_FetchData64,
- .deliver = afs_deliver_fs_fetch_data,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * fetch data from a very large file
- */
- static void afs_fs_fetch_data64(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_read *req = op->fetch.req;
- struct afs_call *call;
- __be32 *bp;
- _enter("");
- call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- bp[0] = htonl(FSFETCHDATA64);
- bp[1] = htonl(vp->fid.vid);
- bp[2] = htonl(vp->fid.vnode);
- bp[3] = htonl(vp->fid.unique);
- bp[4] = htonl(upper_32_bits(req->pos));
- bp[5] = htonl(lower_32_bits(req->pos));
- bp[6] = 0;
- bp[7] = htonl(lower_32_bits(req->len));
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * fetch data from a file
- */
- void afs_fs_fetch_data(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- struct afs_read *req = op->fetch.req;
- __be32 *bp;
- if (upper_32_bits(req->pos) ||
- upper_32_bits(req->len) ||
- upper_32_bits(req->pos + req->len))
- return afs_fs_fetch_data64(op);
- _enter("");
- call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- bp[0] = htonl(FSFETCHDATA);
- bp[1] = htonl(vp->fid.vid);
- bp[2] = htonl(vp->fid.vnode);
- bp[3] = htonl(vp->fid.unique);
- bp[4] = htonl(lower_32_bits(req->pos));
- bp[5] = htonl(lower_32_bits(req->len));
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * deliver reply data to an FS.CreateFile or an FS.MakeDir
- */
- static int afs_deliver_fs_create_vnode(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_vnode_param *vp = &op->file[1];
- const __be32 *bp;
- int ret;
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- xdr_decode_AFSFid(&bp, &op->file[1].fid);
- xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
- xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
- xdr_decode_AFSCallBack(&bp, call, &vp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.CreateFile and FS.MakeDir operation type
- */
- static const struct afs_call_type afs_RXFSCreateFile = {
- .name = "FS.CreateFile",
- .op = afs_FS_CreateFile,
- .deliver = afs_deliver_fs_create_vnode,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Create a file.
- */
- void afs_fs_create_file(struct afs_operation *op)
- {
- const struct qstr *name = &op->dentry->d_name;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_call *call;
- size_t namesz, reqsz, padsz;
- __be32 *bp;
- _enter("");
- namesz = name->len;
- padsz = (4 - (namesz & 3)) & 3;
- reqsz = (5 * 4) + namesz + padsz + (6 * 4);
- call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile,
- reqsz, (3 + 21 + 21 + 3 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSCREATEFILE);
- *bp++ = htonl(dvp->fid.vid);
- *bp++ = htonl(dvp->fid.vnode);
- *bp++ = htonl(dvp->fid.unique);
- *bp++ = htonl(namesz);
- memcpy(bp, name->name, namesz);
- bp = (void *) bp + namesz;
- if (padsz > 0) {
- memset(bp, 0, padsz);
- bp = (void *) bp + padsz;
- }
- *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
- *bp++ = htonl(op->mtime.tv_sec); /* mtime */
- *bp++ = 0; /* owner */
- *bp++ = 0; /* group */
- *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
- *bp++ = 0; /* segment size */
- trace_afs_make_fs_call1(call, &dvp->fid, name);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- static const struct afs_call_type afs_RXFSMakeDir = {
- .name = "FS.MakeDir",
- .op = afs_FS_MakeDir,
- .deliver = afs_deliver_fs_create_vnode,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Create a new directory
- */
- void afs_fs_make_dir(struct afs_operation *op)
- {
- const struct qstr *name = &op->dentry->d_name;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_call *call;
- size_t namesz, reqsz, padsz;
- __be32 *bp;
- _enter("");
- namesz = name->len;
- padsz = (4 - (namesz & 3)) & 3;
- reqsz = (5 * 4) + namesz + padsz + (6 * 4);
- call = afs_alloc_flat_call(op->net, &afs_RXFSMakeDir,
- reqsz, (3 + 21 + 21 + 3 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSMAKEDIR);
- *bp++ = htonl(dvp->fid.vid);
- *bp++ = htonl(dvp->fid.vnode);
- *bp++ = htonl(dvp->fid.unique);
- *bp++ = htonl(namesz);
- memcpy(bp, name->name, namesz);
- bp = (void *) bp + namesz;
- if (padsz > 0) {
- memset(bp, 0, padsz);
- bp = (void *) bp + padsz;
- }
- *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
- *bp++ = htonl(op->mtime.tv_sec); /* mtime */
- *bp++ = 0; /* owner */
- *bp++ = 0; /* group */
- *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
- *bp++ = 0; /* segment size */
- trace_afs_make_fs_call1(call, &dvp->fid, name);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * Deliver reply data to any operation that returns status and volume sync.
- */
- static int afs_deliver_fs_file_status_and_vol(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *vp = &op->file[0];
- const __be32 *bp;
- int ret;
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.RemoveFile operation type
- */
- static const struct afs_call_type afs_RXFSRemoveFile = {
- .name = "FS.RemoveFile",
- .op = afs_FS_RemoveFile,
- .deliver = afs_deliver_fs_file_status_and_vol,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Remove a file.
- */
- void afs_fs_remove_file(struct afs_operation *op)
- {
- const struct qstr *name = &op->dentry->d_name;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_call *call;
- size_t namesz, reqsz, padsz;
- __be32 *bp;
- _enter("");
- namesz = name->len;
- padsz = (4 - (namesz & 3)) & 3;
- reqsz = (5 * 4) + namesz + padsz;
- call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveFile,
- reqsz, (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSREMOVEFILE);
- *bp++ = htonl(dvp->fid.vid);
- *bp++ = htonl(dvp->fid.vnode);
- *bp++ = htonl(dvp->fid.unique);
- *bp++ = htonl(namesz);
- memcpy(bp, name->name, namesz);
- bp = (void *) bp + namesz;
- if (padsz > 0) {
- memset(bp, 0, padsz);
- bp = (void *) bp + padsz;
- }
- trace_afs_make_fs_call1(call, &dvp->fid, name);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- static const struct afs_call_type afs_RXFSRemoveDir = {
- .name = "FS.RemoveDir",
- .op = afs_FS_RemoveDir,
- .deliver = afs_deliver_fs_file_status_and_vol,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Remove a directory.
- */
- void afs_fs_remove_dir(struct afs_operation *op)
- {
- const struct qstr *name = &op->dentry->d_name;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_call *call;
- size_t namesz, reqsz, padsz;
- __be32 *bp;
- _enter("");
- namesz = name->len;
- padsz = (4 - (namesz & 3)) & 3;
- reqsz = (5 * 4) + namesz + padsz;
- call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveDir,
- reqsz, (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSREMOVEDIR);
- *bp++ = htonl(dvp->fid.vid);
- *bp++ = htonl(dvp->fid.vnode);
- *bp++ = htonl(dvp->fid.unique);
- *bp++ = htonl(namesz);
- memcpy(bp, name->name, namesz);
- bp = (void *) bp + namesz;
- if (padsz > 0) {
- memset(bp, 0, padsz);
- bp = (void *) bp + padsz;
- }
- trace_afs_make_fs_call1(call, &dvp->fid, name);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * deliver reply data to an FS.Link
- */
- static int afs_deliver_fs_link(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_vnode_param *vp = &op->file[1];
- const __be32 *bp;
- int ret;
- _enter("{%u}", call->unmarshall);
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
- xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.Link operation type
- */
- static const struct afs_call_type afs_RXFSLink = {
- .name = "FS.Link",
- .op = afs_FS_Link,
- .deliver = afs_deliver_fs_link,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * make a hard link
- */
- void afs_fs_link(struct afs_operation *op)
- {
- const struct qstr *name = &op->dentry->d_name;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_vnode_param *vp = &op->file[1];
- struct afs_call *call;
- size_t namesz, reqsz, padsz;
- __be32 *bp;
- _enter("");
- namesz = name->len;
- padsz = (4 - (namesz & 3)) & 3;
- reqsz = (5 * 4) + namesz + padsz + (3 * 4);
- call = afs_alloc_flat_call(op->net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSLINK);
- *bp++ = htonl(dvp->fid.vid);
- *bp++ = htonl(dvp->fid.vnode);
- *bp++ = htonl(dvp->fid.unique);
- *bp++ = htonl(namesz);
- memcpy(bp, name->name, namesz);
- bp = (void *) bp + namesz;
- if (padsz > 0) {
- memset(bp, 0, padsz);
- bp = (void *) bp + padsz;
- }
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- trace_afs_make_fs_call1(call, &vp->fid, name);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * deliver reply data to an FS.Symlink
- */
- static int afs_deliver_fs_symlink(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_vnode_param *vp = &op->file[1];
- const __be32 *bp;
- int ret;
- _enter("{%u}", call->unmarshall);
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- xdr_decode_AFSFid(&bp, &vp->fid);
- xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
- xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.Symlink operation type
- */
- static const struct afs_call_type afs_RXFSSymlink = {
- .name = "FS.Symlink",
- .op = afs_FS_Symlink,
- .deliver = afs_deliver_fs_symlink,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * create a symbolic link
- */
- void afs_fs_symlink(struct afs_operation *op)
- {
- const struct qstr *name = &op->dentry->d_name;
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_call *call;
- size_t namesz, reqsz, padsz, c_namesz, c_padsz;
- __be32 *bp;
- _enter("");
- namesz = name->len;
- padsz = (4 - (namesz & 3)) & 3;
- c_namesz = strlen(op->create.symlink);
- c_padsz = (4 - (c_namesz & 3)) & 3;
- reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
- call = afs_alloc_flat_call(op->net, &afs_RXFSSymlink, reqsz,
- (3 + 21 + 21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSSYMLINK);
- *bp++ = htonl(dvp->fid.vid);
- *bp++ = htonl(dvp->fid.vnode);
- *bp++ = htonl(dvp->fid.unique);
- *bp++ = htonl(namesz);
- memcpy(bp, name->name, namesz);
- bp = (void *) bp + namesz;
- if (padsz > 0) {
- memset(bp, 0, padsz);
- bp = (void *) bp + padsz;
- }
- *bp++ = htonl(c_namesz);
- memcpy(bp, op->create.symlink, c_namesz);
- bp = (void *) bp + c_namesz;
- if (c_padsz > 0) {
- memset(bp, 0, c_padsz);
- bp = (void *) bp + c_padsz;
- }
- *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
- *bp++ = htonl(op->mtime.tv_sec); /* mtime */
- *bp++ = 0; /* owner */
- *bp++ = 0; /* group */
- *bp++ = htonl(S_IRWXUGO); /* unix mode */
- *bp++ = 0; /* segment size */
- trace_afs_make_fs_call1(call, &dvp->fid, name);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * deliver reply data to an FS.Rename
- */
- static int afs_deliver_fs_rename(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *orig_dvp = &op->file[0];
- struct afs_vnode_param *new_dvp = &op->file[1];
- const __be32 *bp;
- int ret;
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
- bp = call->buffer;
- /* If the two dirs are the same, we have two copies of the same status
- * report, so we just decode it twice.
- */
- xdr_decode_AFSFetchStatus(&bp, call, &orig_dvp->scb);
- xdr_decode_AFSFetchStatus(&bp, call, &new_dvp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.Rename operation type
- */
- static const struct afs_call_type afs_RXFSRename = {
- .name = "FS.Rename",
- .op = afs_FS_Rename,
- .deliver = afs_deliver_fs_rename,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Rename/move a file or directory.
- */
- void afs_fs_rename(struct afs_operation *op)
- {
- struct afs_vnode_param *orig_dvp = &op->file[0];
- struct afs_vnode_param *new_dvp = &op->file[1];
- const struct qstr *orig_name = &op->dentry->d_name;
- const struct qstr *new_name = &op->dentry_2->d_name;
- struct afs_call *call;
- size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
- __be32 *bp;
- _enter("");
- o_namesz = orig_name->len;
- o_padsz = (4 - (o_namesz & 3)) & 3;
- n_namesz = new_name->len;
- n_padsz = (4 - (n_namesz & 3)) & 3;
- reqsz = (4 * 4) +
- 4 + o_namesz + o_padsz +
- (3 * 4) +
- 4 + n_namesz + n_padsz;
- call = afs_alloc_flat_call(op->net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSRENAME);
- *bp++ = htonl(orig_dvp->fid.vid);
- *bp++ = htonl(orig_dvp->fid.vnode);
- *bp++ = htonl(orig_dvp->fid.unique);
- *bp++ = htonl(o_namesz);
- memcpy(bp, orig_name->name, o_namesz);
- bp = (void *) bp + o_namesz;
- if (o_padsz > 0) {
- memset(bp, 0, o_padsz);
- bp = (void *) bp + o_padsz;
- }
- *bp++ = htonl(new_dvp->fid.vid);
- *bp++ = htonl(new_dvp->fid.vnode);
- *bp++ = htonl(new_dvp->fid.unique);
- *bp++ = htonl(n_namesz);
- memcpy(bp, new_name->name, n_namesz);
- bp = (void *) bp + n_namesz;
- if (n_padsz > 0) {
- memset(bp, 0, n_padsz);
- bp = (void *) bp + n_padsz;
- }
- trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * Deliver reply data to FS.StoreData or FS.StoreStatus
- */
- static int afs_deliver_fs_store_data(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *vp = &op->file[0];
- const __be32 *bp;
- int ret;
- _enter("");
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.StoreData operation type
- */
- static const struct afs_call_type afs_RXFSStoreData = {
- .name = "FS.StoreData",
- .op = afs_FS_StoreData,
- .deliver = afs_deliver_fs_store_data,
- .destructor = afs_flat_call_destructor,
- };
- static const struct afs_call_type afs_RXFSStoreData64 = {
- .name = "FS.StoreData64",
- .op = afs_FS_StoreData64,
- .deliver = afs_deliver_fs_store_data,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * store a set of pages to a very large file
- */
- static void afs_fs_store_data64(struct afs_operation *op,
- loff_t pos, loff_t size, loff_t i_size)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- __be32 *bp;
- _enter(",%x,{%llx:%llu},,",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64,
- (4 + 6 + 3 * 2) * 4,
- (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- call->send_pages = true;
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSSTOREDATA64);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- *bp++ = htonl(AFS_SET_MTIME); /* mask */
- *bp++ = htonl(op->mtime.tv_sec); /* mtime */
- *bp++ = 0; /* owner */
- *bp++ = 0; /* group */
- *bp++ = 0; /* unix mode */
- *bp++ = 0; /* segment size */
- *bp++ = htonl(upper_32_bits(pos));
- *bp++ = htonl(lower_32_bits(pos));
- *bp++ = htonl(upper_32_bits(size));
- *bp++ = htonl(lower_32_bits(size));
- *bp++ = htonl(upper_32_bits(i_size));
- *bp++ = htonl(lower_32_bits(i_size));
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * store a set of pages
- */
- void afs_fs_store_data(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- loff_t size, pos, i_size;
- __be32 *bp;
- _enter(",%x,{%llx:%llu},,",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- size = (loff_t)op->store.last_to - (loff_t)op->store.first_offset;
- if (op->store.first != op->store.last)
- size += (loff_t)(op->store.last - op->store.first) << PAGE_SHIFT;
- pos = (loff_t)op->store.first << PAGE_SHIFT;
- pos += op->store.first_offset;
- i_size = i_size_read(&vp->vnode->vfs_inode);
- if (pos + size > i_size)
- i_size = size + pos;
- _debug("size %llx, at %llx, i_size %llx",
- (unsigned long long) size, (unsigned long long) pos,
- (unsigned long long) i_size);
- if (upper_32_bits(pos) || upper_32_bits(i_size) || upper_32_bits(size) ||
- upper_32_bits(pos + size))
- return afs_fs_store_data64(op, pos, size, i_size);
- call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData,
- (4 + 6 + 3) * 4,
- (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- call->send_pages = true;
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSSTOREDATA);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- *bp++ = htonl(AFS_SET_MTIME); /* mask */
- *bp++ = htonl(op->mtime.tv_sec); /* mtime */
- *bp++ = 0; /* owner */
- *bp++ = 0; /* group */
- *bp++ = 0; /* unix mode */
- *bp++ = 0; /* segment size */
- *bp++ = htonl(lower_32_bits(pos));
- *bp++ = htonl(lower_32_bits(size));
- *bp++ = htonl(lower_32_bits(i_size));
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * FS.StoreStatus operation type
- */
- static const struct afs_call_type afs_RXFSStoreStatus = {
- .name = "FS.StoreStatus",
- .op = afs_FS_StoreStatus,
- .deliver = afs_deliver_fs_store_data,
- .destructor = afs_flat_call_destructor,
- };
- static const struct afs_call_type afs_RXFSStoreData_as_Status = {
- .name = "FS.StoreData",
- .op = afs_FS_StoreData,
- .deliver = afs_deliver_fs_store_data,
- .destructor = afs_flat_call_destructor,
- };
- static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
- .name = "FS.StoreData64",
- .op = afs_FS_StoreData64,
- .deliver = afs_deliver_fs_store_data,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * set the attributes on a very large file, using FS.StoreData rather than
- * FS.StoreStatus so as to alter the file size also
- */
- static void afs_fs_setattr_size64(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- struct iattr *attr = op->setattr.attr;
- __be32 *bp;
- _enter(",%x,{%llx:%llu},,",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- ASSERT(attr->ia_valid & ATTR_SIZE);
- call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64_as_Status,
- (4 + 6 + 3 * 2) * 4,
- (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSSTOREDATA64);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- xdr_encode_AFS_StoreStatus(&bp, attr);
- *bp++ = htonl(upper_32_bits(attr->ia_size)); /* position of start of write */
- *bp++ = htonl(lower_32_bits(attr->ia_size));
- *bp++ = 0; /* size of write */
- *bp++ = 0;
- *bp++ = htonl(upper_32_bits(attr->ia_size)); /* new file length */
- *bp++ = htonl(lower_32_bits(attr->ia_size));
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
- * so as to alter the file size also
- */
- static void afs_fs_setattr_size(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- struct iattr *attr = op->setattr.attr;
- __be32 *bp;
- _enter(",%x,{%llx:%llu},,",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- ASSERT(attr->ia_valid & ATTR_SIZE);
- if (upper_32_bits(attr->ia_size))
- return afs_fs_setattr_size64(op);
- call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData_as_Status,
- (4 + 6 + 3) * 4,
- (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSSTOREDATA);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- xdr_encode_AFS_StoreStatus(&bp, attr);
- *bp++ = htonl(attr->ia_size); /* position of start of write */
- *bp++ = 0; /* size of write */
- *bp++ = htonl(attr->ia_size); /* new file length */
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * set the attributes on a file, using FS.StoreData if there's a change in file
- * size, and FS.StoreStatus otherwise
- */
- void afs_fs_setattr(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- struct iattr *attr = op->setattr.attr;
- __be32 *bp;
- if (attr->ia_valid & ATTR_SIZE)
- return afs_fs_setattr_size(op);
- _enter(",%x,{%llx:%llu},,",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(op->net, &afs_RXFSStoreStatus,
- (4 + 6) * 4,
- (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSSTORESTATUS);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- xdr_encode_AFS_StoreStatus(&bp, op->setattr.attr);
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * deliver reply data to an FS.GetVolumeStatus
- */
- static int afs_deliver_fs_get_volume_status(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- const __be32 *bp;
- char *p;
- u32 size;
- int ret;
- _enter("{%u}", call->unmarshall);
- switch (call->unmarshall) {
- case 0:
- call->unmarshall++;
- afs_extract_to_buf(call, 12 * 4);
- fallthrough;
- /* extract the returned status record */
- case 1:
- _debug("extract status");
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- bp = call->buffer;
- xdr_decode_AFSFetchVolumeStatus(&bp, &op->volstatus.vs);
- call->unmarshall++;
- afs_extract_to_tmp(call);
- fallthrough;
- /* extract the volume name length */
- case 2:
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- call->count = ntohl(call->tmp);
- _debug("volname length: %u", call->count);
- if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, afs_eproto_volname_len);
- size = (call->count + 3) & ~3; /* It's padded */
- afs_extract_to_buf(call, size);
- call->unmarshall++;
- fallthrough;
- /* extract the volume name */
- case 3:
- _debug("extract volname");
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- p = call->buffer;
- p[call->count] = 0;
- _debug("volname '%s'", p);
- afs_extract_to_tmp(call);
- call->unmarshall++;
- fallthrough;
- /* extract the offline message length */
- case 4:
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- call->count = ntohl(call->tmp);
- _debug("offline msg length: %u", call->count);
- if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, afs_eproto_offline_msg_len);
- size = (call->count + 3) & ~3; /* It's padded */
- afs_extract_to_buf(call, size);
- call->unmarshall++;
- fallthrough;
- /* extract the offline message */
- case 5:
- _debug("extract offline");
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- p = call->buffer;
- p[call->count] = 0;
- _debug("offline '%s'", p);
- afs_extract_to_tmp(call);
- call->unmarshall++;
- fallthrough;
- /* extract the message of the day length */
- case 6:
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- call->count = ntohl(call->tmp);
- _debug("motd length: %u", call->count);
- if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, afs_eproto_motd_len);
- size = (call->count + 3) & ~3; /* It's padded */
- afs_extract_to_buf(call, size);
- call->unmarshall++;
- fallthrough;
- /* extract the message of the day */
- case 7:
- _debug("extract motd");
- ret = afs_extract_data(call, false);
- if (ret < 0)
- return ret;
- p = call->buffer;
- p[call->count] = 0;
- _debug("motd '%s'", p);
- call->unmarshall++;
- case 8:
- break;
- }
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.GetVolumeStatus operation type
- */
- static const struct afs_call_type afs_RXFSGetVolumeStatus = {
- .name = "FS.GetVolumeStatus",
- .op = afs_FS_GetVolumeStatus,
- .deliver = afs_deliver_fs_get_volume_status,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * fetch the status of a volume
- */
- void afs_fs_get_volume_status(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- __be32 *bp;
- _enter("");
- call = afs_alloc_flat_call(op->net, &afs_RXFSGetVolumeStatus, 2 * 4,
- max(12 * 4, AFSOPAQUEMAX + 1));
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- bp[0] = htonl(FSGETVOLUMESTATUS);
- bp[1] = htonl(vp->fid.vid);
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock
- */
- static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- const __be32 *bp;
- int ret;
- _enter("{%u}", call->unmarshall);
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.SetLock operation type
- */
- static const struct afs_call_type afs_RXFSSetLock = {
- .name = "FS.SetLock",
- .op = afs_FS_SetLock,
- .deliver = afs_deliver_fs_xxxx_lock,
- .done = afs_lock_op_done,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * FS.ExtendLock operation type
- */
- static const struct afs_call_type afs_RXFSExtendLock = {
- .name = "FS.ExtendLock",
- .op = afs_FS_ExtendLock,
- .deliver = afs_deliver_fs_xxxx_lock,
- .done = afs_lock_op_done,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * FS.ReleaseLock operation type
- */
- static const struct afs_call_type afs_RXFSReleaseLock = {
- .name = "FS.ReleaseLock",
- .op = afs_FS_ReleaseLock,
- .deliver = afs_deliver_fs_xxxx_lock,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Set a lock on a file
- */
- void afs_fs_set_lock(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- __be32 *bp;
- _enter("");
- call = afs_alloc_flat_call(op->net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSSETLOCK);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- *bp++ = htonl(op->lock.type);
- trace_afs_make_fs_calli(call, &vp->fid, op->lock.type);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * extend a lock on a file
- */
- void afs_fs_extend_lock(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- __be32 *bp;
- _enter("");
- call = afs_alloc_flat_call(op->net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSEXTENDLOCK);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * release a lock on a file
- */
- void afs_fs_release_lock(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- __be32 *bp;
- _enter("");
- call = afs_alloc_flat_call(op->net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSRELEASELOCK);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * Deliver reply data to an FS.GiveUpAllCallBacks operation.
- */
- static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call)
- {
- return afs_transfer_reply(call);
- }
- /*
- * FS.GiveUpAllCallBacks operation type
- */
- static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = {
- .name = "FS.GiveUpAllCallBacks",
- .op = afs_FS_GiveUpAllCallBacks,
- .deliver = afs_deliver_fs_give_up_all_callbacks,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Flush all the callbacks we have on a server.
- */
- int afs_fs_give_up_all_callbacks(struct afs_net *net,
- struct afs_server *server,
- struct afs_addr_cursor *ac,
- struct key *key)
- {
- struct afs_call *call;
- __be32 *bp;
- _enter("");
- call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0);
- if (!call)
- return -ENOMEM;
- call->key = key;
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSGIVEUPALLCALLBACKS);
- call->server = afs_use_server(server, afs_server_trace_give_up_cb);
- afs_make_call(ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, ac);
- }
- /*
- * Deliver reply data to an FS.GetCapabilities operation.
- */
- static int afs_deliver_fs_get_capabilities(struct afs_call *call)
- {
- u32 count;
- int ret;
- _enter("{%u,%zu}", call->unmarshall, iov_iter_count(call->iter));
- switch (call->unmarshall) {
- case 0:
- afs_extract_to_tmp(call);
- call->unmarshall++;
- fallthrough;
- /* Extract the capabilities word count */
- case 1:
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- count = ntohl(call->tmp);
- call->count = count;
- call->count2 = count;
- afs_extract_discard(call, count * sizeof(__be32));
- call->unmarshall++;
- fallthrough;
- /* Extract capabilities words */
- case 2:
- ret = afs_extract_data(call, false);
- if (ret < 0)
- return ret;
- /* TODO: Examine capabilities */
- call->unmarshall++;
- break;
- }
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.GetCapabilities operation type
- */
- static const struct afs_call_type afs_RXFSGetCapabilities = {
- .name = "FS.GetCapabilities",
- .op = afs_FS_GetCapabilities,
- .deliver = afs_deliver_fs_get_capabilities,
- .done = afs_fileserver_probe_result,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Probe a fileserver for the capabilities that it supports. This RPC can
- * reply with up to 196 words. The operation is asynchronous and if we managed
- * to allocate a call, true is returned the result is delivered through the
- * ->done() - otherwise we return false to indicate we didn't even try.
- */
- bool afs_fs_get_capabilities(struct afs_net *net, struct afs_server *server,
- struct afs_addr_cursor *ac, struct key *key)
- {
- struct afs_call *call;
- __be32 *bp;
- _enter("");
- call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
- if (!call)
- return false;
- call->key = key;
- call->server = afs_use_server(server, afs_server_trace_get_caps);
- call->upgrade = true;
- call->async = true;
- call->max_lifespan = AFS_PROBE_MAX_LIFESPAN;
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSGETCAPABILITIES);
- trace_afs_make_fs_call(call, NULL);
- afs_make_call(ac, call, GFP_NOFS);
- afs_put_call(call);
- return true;
- }
- /*
- * Deliver reply data to an FS.InlineBulkStatus call
- */
- static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_status_cb *scb;
- const __be32 *bp;
- u32 tmp;
- int ret;
- _enter("{%u}", call->unmarshall);
- switch (call->unmarshall) {
- case 0:
- afs_extract_to_tmp(call);
- call->unmarshall++;
- fallthrough;
- /* Extract the file status count and array in two steps */
- case 1:
- _debug("extract status count");
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- tmp = ntohl(call->tmp);
- _debug("status count: %u/%u", tmp, op->nr_files);
- if (tmp != op->nr_files)
- return afs_protocol_error(call, afs_eproto_ibulkst_count);
- call->count = 0;
- call->unmarshall++;
- more_counts:
- afs_extract_to_buf(call, 21 * sizeof(__be32));
- fallthrough;
- case 2:
- _debug("extract status array %u", call->count);
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- switch (call->count) {
- case 0:
- scb = &op->file[0].scb;
- break;
- case 1:
- scb = &op->file[1].scb;
- break;
- default:
- scb = &op->more_files[call->count - 2].scb;
- break;
- }
- bp = call->buffer;
- xdr_decode_AFSFetchStatus(&bp, call, scb);
- call->count++;
- if (call->count < op->nr_files)
- goto more_counts;
- call->count = 0;
- call->unmarshall++;
- afs_extract_to_tmp(call);
- fallthrough;
- /* Extract the callback count and array in two steps */
- case 3:
- _debug("extract CB count");
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- tmp = ntohl(call->tmp);
- _debug("CB count: %u", tmp);
- if (tmp != op->nr_files)
- return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
- call->count = 0;
- call->unmarshall++;
- more_cbs:
- afs_extract_to_buf(call, 3 * sizeof(__be32));
- fallthrough;
- case 4:
- _debug("extract CB array");
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- _debug("unmarshall CB array");
- switch (call->count) {
- case 0:
- scb = &op->file[0].scb;
- break;
- case 1:
- scb = &op->file[1].scb;
- break;
- default:
- scb = &op->more_files[call->count - 2].scb;
- break;
- }
- bp = call->buffer;
- xdr_decode_AFSCallBack(&bp, call, scb);
- call->count++;
- if (call->count < op->nr_files)
- goto more_cbs;
- afs_extract_to_buf(call, 6 * sizeof(__be32));
- call->unmarshall++;
- fallthrough;
- case 5:
- ret = afs_extract_data(call, false);
- if (ret < 0)
- return ret;
- bp = call->buffer;
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- call->unmarshall++;
- case 6:
- break;
- }
- _leave(" = 0 [done]");
- return 0;
- }
- static void afs_done_fs_inline_bulk_status(struct afs_call *call)
- {
- if (call->error == -ECONNABORTED &&
- call->abort_code == RX_INVALID_OPERATION) {
- set_bit(AFS_SERVER_FL_NO_IBULK, &call->server->flags);
- if (call->op)
- set_bit(AFS_VOLUME_MAYBE_NO_IBULK, &call->op->volume->flags);
- }
- }
- /*
- * FS.InlineBulkStatus operation type
- */
- static const struct afs_call_type afs_RXFSInlineBulkStatus = {
- .name = "FS.InlineBulkStatus",
- .op = afs_FS_InlineBulkStatus,
- .deliver = afs_deliver_fs_inline_bulk_status,
- .done = afs_done_fs_inline_bulk_status,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Fetch the status information for up to 50 files
- */
- void afs_fs_inline_bulk_status(struct afs_operation *op)
- {
- struct afs_vnode_param *dvp = &op->file[0];
- struct afs_vnode_param *vp = &op->file[1];
- struct afs_call *call;
- __be32 *bp;
- int i;
- if (test_bit(AFS_SERVER_FL_NO_IBULK, &op->server->flags)) {
- op->error = -ENOTSUPP;
- return;
- }
- _enter(",%x,{%llx:%llu},%u",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files);
- call = afs_alloc_flat_call(op->net, &afs_RXFSInlineBulkStatus,
- (2 + op->nr_files * 3) * 4,
- 21 * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- *bp++ = htonl(FSINLINEBULKSTATUS);
- *bp++ = htonl(op->nr_files);
- *bp++ = htonl(dvp->fid.vid);
- *bp++ = htonl(dvp->fid.vnode);
- *bp++ = htonl(dvp->fid.unique);
- *bp++ = htonl(vp->fid.vid);
- *bp++ = htonl(vp->fid.vnode);
- *bp++ = htonl(vp->fid.unique);
- for (i = 0; i < op->nr_files - 2; i++) {
- *bp++ = htonl(op->more_files[i].fid.vid);
- *bp++ = htonl(op->more_files[i].fid.vnode);
- *bp++ = htonl(op->more_files[i].fid.unique);
- }
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_NOFS);
- }
- /*
- * deliver reply data to an FS.FetchACL
- */
- static int afs_deliver_fs_fetch_acl(struct afs_call *call)
- {
- struct afs_operation *op = call->op;
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_acl *acl;
- const __be32 *bp;
- unsigned int size;
- int ret;
- _enter("{%u}", call->unmarshall);
- switch (call->unmarshall) {
- case 0:
- afs_extract_to_tmp(call);
- call->unmarshall++;
- fallthrough;
- /* extract the returned data length */
- case 1:
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- size = call->count2 = ntohl(call->tmp);
- size = round_up(size, 4);
- acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
- if (!acl)
- return -ENOMEM;
- op->acl = acl;
- acl->size = call->count2;
- afs_extract_begin(call, acl->data, size);
- call->unmarshall++;
- fallthrough;
- /* extract the returned data */
- case 2:
- ret = afs_extract_data(call, true);
- if (ret < 0)
- return ret;
- afs_extract_to_buf(call, (21 + 6) * 4);
- call->unmarshall++;
- fallthrough;
- /* extract the metadata */
- case 3:
- ret = afs_extract_data(call, false);
- if (ret < 0)
- return ret;
- bp = call->buffer;
- xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
- xdr_decode_AFSVolSync(&bp, &op->volsync);
- call->unmarshall++;
- case 4:
- break;
- }
- _leave(" = 0 [done]");
- return 0;
- }
- /*
- * FS.FetchACL operation type
- */
- static const struct afs_call_type afs_RXFSFetchACL = {
- .name = "FS.FetchACL",
- .op = afs_FS_FetchACL,
- .deliver = afs_deliver_fs_fetch_acl,
- };
- /*
- * Fetch the ACL for a file.
- */
- void afs_fs_fetch_acl(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- __be32 *bp;
- _enter(",%x,{%llx:%llu},,",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(op->net, &afs_RXFSFetchACL, 16, (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- bp[0] = htonl(FSFETCHACL);
- bp[1] = htonl(vp->fid.vid);
- bp[2] = htonl(vp->fid.vnode);
- bp[3] = htonl(vp->fid.unique);
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_KERNEL);
- }
- /*
- * FS.StoreACL operation type
- */
- static const struct afs_call_type afs_RXFSStoreACL = {
- .name = "FS.StoreACL",
- .op = afs_FS_StoreACL,
- .deliver = afs_deliver_fs_file_status_and_vol,
- .destructor = afs_flat_call_destructor,
- };
- /*
- * Fetch the ACL for a file.
- */
- void afs_fs_store_acl(struct afs_operation *op)
- {
- struct afs_vnode_param *vp = &op->file[0];
- struct afs_call *call;
- const struct afs_acl *acl = op->acl;
- size_t size;
- __be32 *bp;
- _enter(",%x,{%llx:%llu},,",
- key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- size = round_up(acl->size, 4);
- call = afs_alloc_flat_call(op->net, &afs_RXFSStoreACL,
- 5 * 4 + size, (21 + 6) * 4);
- if (!call)
- return afs_op_nomem(op);
- /* marshall the parameters */
- bp = call->request;
- bp[0] = htonl(FSSTOREACL);
- bp[1] = htonl(vp->fid.vid);
- bp[2] = htonl(vp->fid.vnode);
- bp[3] = htonl(vp->fid.unique);
- bp[4] = htonl(acl->size);
- memcpy(&bp[5], acl->data, acl->size);
- if (acl->size != size)
- memset((void *)&bp[5] + acl->size, 0, size - acl->size);
- trace_afs_make_fs_call(call, &vp->fid);
- afs_make_op_call(op, call, GFP_KERNEL);
- }
|