1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372 |
- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
- */
- #include <linux/fs.h>
- #include <linux/sunrpc/addr.h>
- #include <linux/sunrpc/sched.h>
- #include <linux/nfs.h>
- #include <linux/nfs3.h>
- #include <linux/nfs4.h>
- #include <linux/nfs_xdr.h>
- #include <linux/nfs_fs.h>
- #include "nfs4_fs.h"
- #include "nfs42.h"
- #include "iostat.h"
- #include "pnfs.h"
- #include "nfs4session.h"
- #include "internal.h"
- #include "delegation.h"
- #include "nfs4trace.h"
- #define NFSDBG_FACILITY NFSDBG_PROC
- static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std);
- static void nfs42_set_netaddr(struct file *filep, struct nfs42_netaddr *naddr)
- {
- struct nfs_client *clp = (NFS_SERVER(file_inode(filep)))->nfs_client;
- unsigned short port = 2049;
- rcu_read_lock();
- naddr->netid_len = scnprintf(naddr->netid,
- sizeof(naddr->netid), "%s",
- rpc_peeraddr2str(clp->cl_rpcclient,
- RPC_DISPLAY_NETID));
- naddr->addr_len = scnprintf(naddr->addr,
- sizeof(naddr->addr),
- "%s.%u.%u",
- rpc_peeraddr2str(clp->cl_rpcclient,
- RPC_DISPLAY_ADDR),
- port >> 8, port & 255);
- rcu_read_unlock();
- }
- static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
- struct nfs_lock_context *lock, loff_t offset, loff_t len)
- {
- struct inode *inode = file_inode(filep);
- struct nfs_server *server = NFS_SERVER(inode);
- u32 bitmask[3];
- struct nfs42_falloc_args args = {
- .falloc_fh = NFS_FH(inode),
- .falloc_offset = offset,
- .falloc_length = len,
- .falloc_bitmask = bitmask,
- };
- struct nfs42_falloc_res res = {
- .falloc_server = server,
- };
- int status;
- msg->rpc_argp = &args;
- msg->rpc_resp = &res;
- status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context,
- lock, FMODE_WRITE);
- if (status) {
- if (status == -EAGAIN)
- status = -NFS4ERR_BAD_STATEID;
- return status;
- }
- memcpy(bitmask, server->cache_consistency_bitmask, sizeof(bitmask));
- if (server->attr_bitmask[1] & FATTR4_WORD1_SPACE_USED)
- bitmask[1] |= FATTR4_WORD1_SPACE_USED;
- res.falloc_fattr = nfs_alloc_fattr();
- if (!res.falloc_fattr)
- return -ENOMEM;
- status = nfs4_call_sync(server->client, server, msg,
- &args.seq_args, &res.seq_res, 0);
- if (status == 0)
- status = nfs_post_op_update_inode_force_wcc(inode,
- res.falloc_fattr);
- kfree(res.falloc_fattr);
- return status;
- }
- static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
- loff_t offset, loff_t len)
- {
- struct inode *inode = file_inode(filep);
- struct nfs_server *server = NFS_SERVER(inode);
- struct nfs4_exception exception = { };
- struct nfs_lock_context *lock;
- int err;
- lock = nfs_get_lock_context(nfs_file_open_context(filep));
- if (IS_ERR(lock))
- return PTR_ERR(lock);
- exception.inode = inode;
- exception.state = lock->open_context->state;
- err = nfs_sync_inode(inode);
- if (err)
- goto out;
- do {
- err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
- if (err == -ENOTSUPP) {
- err = -EOPNOTSUPP;
- break;
- }
- err = nfs4_handle_exception(server, err, &exception);
- } while (exception.retry);
- out:
- nfs_put_lock_context(lock);
- return err;
- }
- int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
- {
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
- };
- struct inode *inode = file_inode(filep);
- int err;
- if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
- return -EOPNOTSUPP;
- inode_lock(inode);
- err = nfs42_proc_fallocate(&msg, filep, offset, len);
- if (err == -EOPNOTSUPP)
- NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
- inode_unlock(inode);
- return err;
- }
- int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
- {
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
- };
- struct inode *inode = file_inode(filep);
- int err;
- if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
- return -EOPNOTSUPP;
- inode_lock(inode);
- err = nfs42_proc_fallocate(&msg, filep, offset, len);
- if (err == 0)
- truncate_pagecache_range(inode, offset, (offset + len) -1);
- if (err == -EOPNOTSUPP)
- NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
- inode_unlock(inode);
- return err;
- }
- static int handle_async_copy(struct nfs42_copy_res *res,
- struct nfs_server *dst_server,
- struct nfs_server *src_server,
- struct file *src,
- struct file *dst,
- nfs4_stateid *src_stateid,
- bool *restart)
- {
- struct nfs4_copy_state *copy, *tmp_copy;
- int status = NFS4_OK;
- bool found_pending = false;
- struct nfs_open_context *dst_ctx = nfs_file_open_context(dst);
- struct nfs_open_context *src_ctx = nfs_file_open_context(src);
- copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS);
- if (!copy)
- return -ENOMEM;
- spin_lock(&dst_server->nfs_client->cl_lock);
- list_for_each_entry(tmp_copy,
- &dst_server->nfs_client->pending_cb_stateids,
- copies) {
- if (memcmp(&res->write_res.stateid, &tmp_copy->stateid,
- NFS4_STATEID_SIZE))
- continue;
- found_pending = true;
- list_del(&tmp_copy->copies);
- break;
- }
- if (found_pending) {
- spin_unlock(&dst_server->nfs_client->cl_lock);
- kfree(copy);
- copy = tmp_copy;
- goto out;
- }
- memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE);
- init_completion(©->completion);
- copy->parent_dst_state = dst_ctx->state;
- copy->parent_src_state = src_ctx->state;
- list_add_tail(©->copies, &dst_server->ss_copies);
- spin_unlock(&dst_server->nfs_client->cl_lock);
- if (dst_server != src_server) {
- spin_lock(&src_server->nfs_client->cl_lock);
- list_add_tail(©->src_copies, &src_server->ss_copies);
- spin_unlock(&src_server->nfs_client->cl_lock);
- }
- status = wait_for_completion_interruptible(©->completion);
- spin_lock(&dst_server->nfs_client->cl_lock);
- list_del_init(©->copies);
- spin_unlock(&dst_server->nfs_client->cl_lock);
- if (dst_server != src_server) {
- spin_lock(&src_server->nfs_client->cl_lock);
- list_del_init(©->src_copies);
- spin_unlock(&src_server->nfs_client->cl_lock);
- }
- if (status == -ERESTARTSYS) {
- goto out_cancel;
- } else if (copy->flags || copy->error == NFS4ERR_PARTNER_NO_AUTH) {
- status = -EAGAIN;
- *restart = true;
- goto out_cancel;
- }
- out:
- res->write_res.count = copy->count;
- memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf));
- status = -copy->error;
- out_free:
- kfree(copy);
- return status;
- out_cancel:
- nfs42_do_offload_cancel_async(dst, ©->stateid);
- if (!nfs42_files_from_same_server(src, dst))
- nfs42_do_offload_cancel_async(src, src_stateid);
- goto out_free;
- }
- static int process_copy_commit(struct file *dst, loff_t pos_dst,
- struct nfs42_copy_res *res)
- {
- struct nfs_commitres cres;
- int status = -ENOMEM;
- cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
- if (!cres.verf)
- goto out;
- status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
- if (status)
- goto out_free;
- if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
- &cres.verf->verifier)) {
- dprintk("commit verf differs from copy verf\n");
- status = -EAGAIN;
- }
- out_free:
- kfree(cres.verf);
- out:
- return status;
- }
- static ssize_t _nfs42_proc_copy(struct file *src,
- struct nfs_lock_context *src_lock,
- struct file *dst,
- struct nfs_lock_context *dst_lock,
- struct nfs42_copy_args *args,
- struct nfs42_copy_res *res,
- struct nl4_server *nss,
- nfs4_stateid *cnr_stateid,
- bool *restart)
- {
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
- .rpc_argp = args,
- .rpc_resp = res,
- };
- struct inode *dst_inode = file_inode(dst);
- struct inode *src_inode = file_inode(src);
- struct nfs_server *dst_server = NFS_SERVER(dst_inode);
- struct nfs_server *src_server = NFS_SERVER(src_inode);
- loff_t pos_src = args->src_pos;
- loff_t pos_dst = args->dst_pos;
- size_t count = args->count;
- ssize_t status;
- if (nss) {
- args->cp_src = nss;
- nfs4_stateid_copy(&args->src_stateid, cnr_stateid);
- } else {
- status = nfs4_set_rw_stateid(&args->src_stateid,
- src_lock->open_context, src_lock, FMODE_READ);
- if (status) {
- if (status == -EAGAIN)
- status = -NFS4ERR_BAD_STATEID;
- return status;
- }
- }
- status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping,
- pos_src, pos_src + (loff_t)count - 1);
- if (status)
- return status;
- status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context,
- dst_lock, FMODE_WRITE);
- if (status) {
- if (status == -EAGAIN)
- status = -NFS4ERR_BAD_STATEID;
- return status;
- }
- status = nfs_sync_inode(dst_inode);
- if (status)
- return status;
- res->commit_res.verf = NULL;
- if (args->sync) {
- res->commit_res.verf =
- kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
- if (!res->commit_res.verf)
- return -ENOMEM;
- }
- set_bit(NFS_CLNT_SRC_SSC_COPY_STATE,
- &src_lock->open_context->state->flags);
- set_bit(NFS_CLNT_DST_SSC_COPY_STATE,
- &dst_lock->open_context->state->flags);
- status = nfs4_call_sync(dst_server->client, dst_server, &msg,
- &args->seq_args, &res->seq_res, 0);
- if (status == -ENOTSUPP)
- dst_server->caps &= ~NFS_CAP_COPY;
- if (status)
- goto out;
- if (args->sync &&
- nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
- &res->commit_res.verf->verifier)) {
- status = -EAGAIN;
- goto out;
- }
- if (!res->synchronous) {
- status = handle_async_copy(res, dst_server, src_server, src,
- dst, &args->src_stateid, restart);
- if (status)
- goto out;
- }
- if ((!res->synchronous || !args->sync) &&
- res->write_res.verifier.committed != NFS_FILE_SYNC) {
- status = process_copy_commit(dst, pos_dst, res);
- if (status)
- goto out;
- }
- WARN_ON_ONCE(invalidate_inode_pages2_range(dst_inode->i_mapping,
- pos_dst >> PAGE_SHIFT,
- (pos_dst + res->write_res.count - 1) >> PAGE_SHIFT));
- spin_lock(&dst_inode->i_lock);
- NFS_I(dst_inode)->cache_validity |= (NFS_INO_REVAL_PAGECACHE |
- NFS_INO_REVAL_FORCED | NFS_INO_INVALID_SIZE |
- NFS_INO_INVALID_ATTR | NFS_INO_INVALID_DATA);
- spin_unlock(&dst_inode->i_lock);
- spin_lock(&src_inode->i_lock);
- NFS_I(src_inode)->cache_validity |= (NFS_INO_REVAL_PAGECACHE |
- NFS_INO_REVAL_FORCED | NFS_INO_INVALID_ATIME);
- spin_unlock(&src_inode->i_lock);
- status = res->write_res.count;
- out:
- if (args->sync)
- kfree(res->commit_res.verf);
- return status;
- }
- ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
- struct file *dst, loff_t pos_dst, size_t count,
- struct nl4_server *nss,
- nfs4_stateid *cnr_stateid, bool sync)
- {
- struct nfs_server *server = NFS_SERVER(file_inode(dst));
- struct nfs_lock_context *src_lock;
- struct nfs_lock_context *dst_lock;
- struct nfs42_copy_args args = {
- .src_fh = NFS_FH(file_inode(src)),
- .src_pos = pos_src,
- .dst_fh = NFS_FH(file_inode(dst)),
- .dst_pos = pos_dst,
- .count = count,
- .sync = sync,
- };
- struct nfs42_copy_res res;
- struct nfs4_exception src_exception = {
- .inode = file_inode(src),
- .stateid = &args.src_stateid,
- };
- struct nfs4_exception dst_exception = {
- .inode = file_inode(dst),
- .stateid = &args.dst_stateid,
- };
- ssize_t err, err2;
- bool restart = false;
- src_lock = nfs_get_lock_context(nfs_file_open_context(src));
- if (IS_ERR(src_lock))
- return PTR_ERR(src_lock);
- src_exception.state = src_lock->open_context->state;
- dst_lock = nfs_get_lock_context(nfs_file_open_context(dst));
- if (IS_ERR(dst_lock)) {
- err = PTR_ERR(dst_lock);
- goto out_put_src_lock;
- }
- dst_exception.state = dst_lock->open_context->state;
- do {
- inode_lock(file_inode(dst));
- err = _nfs42_proc_copy(src, src_lock,
- dst, dst_lock,
- &args, &res,
- nss, cnr_stateid, &restart);
- inode_unlock(file_inode(dst));
- if (err >= 0)
- break;
- if (err == -ENOTSUPP &&
- nfs42_files_from_same_server(src, dst)) {
- err = -EOPNOTSUPP;
- break;
- } else if (err == -EAGAIN) {
- if (!restart) {
- dst_exception.retry = 1;
- continue;
- }
- break;
- } else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) {
- args.sync = true;
- dst_exception.retry = 1;
- continue;
- } else if ((err == -ESTALE ||
- err == -NFS4ERR_OFFLOAD_DENIED ||
- err == -ENOTSUPP) &&
- !nfs42_files_from_same_server(src, dst)) {
- nfs42_do_offload_cancel_async(src, &args.src_stateid);
- err = -EOPNOTSUPP;
- break;
- }
- err2 = nfs4_handle_exception(server, err, &src_exception);
- err = nfs4_handle_exception(server, err, &dst_exception);
- if (!err)
- err = err2;
- } while (src_exception.retry || dst_exception.retry);
- nfs_put_lock_context(dst_lock);
- out_put_src_lock:
- nfs_put_lock_context(src_lock);
- return err;
- }
- struct nfs42_offloadcancel_data {
- struct nfs_server *seq_server;
- struct nfs42_offload_status_args args;
- struct nfs42_offload_status_res res;
- };
- static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
- {
- struct nfs42_offloadcancel_data *data = calldata;
- nfs4_setup_sequence(data->seq_server->nfs_client,
- &data->args.osa_seq_args,
- &data->res.osr_seq_res, task);
- }
- static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
- {
- struct nfs42_offloadcancel_data *data = calldata;
- nfs41_sequence_done(task, &data->res.osr_seq_res);
- if (task->tk_status &&
- nfs4_async_handle_error(task, data->seq_server, NULL,
- NULL) == -EAGAIN)
- rpc_restart_call_prepare(task);
- }
- static void nfs42_free_offloadcancel_data(void *data)
- {
- kfree(data);
- }
- static const struct rpc_call_ops nfs42_offload_cancel_ops = {
- .rpc_call_prepare = nfs42_offload_cancel_prepare,
- .rpc_call_done = nfs42_offload_cancel_done,
- .rpc_release = nfs42_free_offloadcancel_data,
- };
- static int nfs42_do_offload_cancel_async(struct file *dst,
- nfs4_stateid *stateid)
- {
- struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
- struct nfs42_offloadcancel_data *data = NULL;
- struct nfs_open_context *ctx = nfs_file_open_context(dst);
- struct rpc_task *task;
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
- .rpc_cred = ctx->cred,
- };
- struct rpc_task_setup task_setup_data = {
- .rpc_client = dst_server->client,
- .rpc_message = &msg,
- .callback_ops = &nfs42_offload_cancel_ops,
- .workqueue = nfsiod_workqueue,
- .flags = RPC_TASK_ASYNC,
- };
- int status;
- if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
- return -EOPNOTSUPP;
- data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS);
- if (data == NULL)
- return -ENOMEM;
- data->seq_server = dst_server;
- data->args.osa_src_fh = NFS_FH(file_inode(dst));
- memcpy(&data->args.osa_stateid, stateid,
- sizeof(data->args.osa_stateid));
- msg.rpc_argp = &data->args;
- msg.rpc_resp = &data->res;
- task_setup_data.callback_data = data;
- nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res,
- 1, 0);
- task = rpc_run_task(&task_setup_data);
- if (IS_ERR(task))
- return PTR_ERR(task);
- status = rpc_wait_for_completion_task(task);
- if (status == -ENOTSUPP)
- dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL;
- rpc_put_task(task);
- return status;
- }
- static int _nfs42_proc_copy_notify(struct file *src, struct file *dst,
- struct nfs42_copy_notify_args *args,
- struct nfs42_copy_notify_res *res)
- {
- struct nfs_server *src_server = NFS_SERVER(file_inode(src));
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY_NOTIFY],
- .rpc_argp = args,
- .rpc_resp = res,
- };
- int status;
- struct nfs_open_context *ctx;
- struct nfs_lock_context *l_ctx;
- ctx = get_nfs_open_context(nfs_file_open_context(src));
- l_ctx = nfs_get_lock_context(ctx);
- if (IS_ERR(l_ctx)) {
- status = PTR_ERR(l_ctx);
- goto out;
- }
- status = nfs4_set_rw_stateid(&args->cna_src_stateid, ctx, l_ctx,
- FMODE_READ);
- nfs_put_lock_context(l_ctx);
- if (status) {
- if (status == -EAGAIN)
- status = -NFS4ERR_BAD_STATEID;
- goto out;
- }
- status = nfs4_call_sync(src_server->client, src_server, &msg,
- &args->cna_seq_args, &res->cnr_seq_res, 0);
- if (status == -ENOTSUPP)
- src_server->caps &= ~NFS_CAP_COPY_NOTIFY;
- out:
- put_nfs_open_context(nfs_file_open_context(src));
- return status;
- }
- int nfs42_proc_copy_notify(struct file *src, struct file *dst,
- struct nfs42_copy_notify_res *res)
- {
- struct nfs_server *src_server = NFS_SERVER(file_inode(src));
- struct nfs42_copy_notify_args *args;
- struct nfs4_exception exception = {
- .inode = file_inode(src),
- };
- int status;
- if (!(src_server->caps & NFS_CAP_COPY_NOTIFY))
- return -EOPNOTSUPP;
- args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_NOFS);
- if (args == NULL)
- return -ENOMEM;
- args->cna_src_fh = NFS_FH(file_inode(src)),
- args->cna_dst.nl4_type = NL4_NETADDR;
- nfs42_set_netaddr(dst, &args->cna_dst.u.nl4_addr);
- exception.stateid = &args->cna_src_stateid;
- do {
- status = _nfs42_proc_copy_notify(src, dst, args, res);
- if (status == -ENOTSUPP) {
- status = -EOPNOTSUPP;
- goto out;
- }
- status = nfs4_handle_exception(src_server, status, &exception);
- } while (exception.retry);
- out:
- kfree(args);
- return status;
- }
- static loff_t _nfs42_proc_llseek(struct file *filep,
- struct nfs_lock_context *lock, loff_t offset, int whence)
- {
- struct inode *inode = file_inode(filep);
- struct nfs42_seek_args args = {
- .sa_fh = NFS_FH(inode),
- .sa_offset = offset,
- .sa_what = (whence == SEEK_HOLE) ?
- NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
- };
- struct nfs42_seek_res res;
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
- .rpc_argp = &args,
- .rpc_resp = &res,
- };
- struct nfs_server *server = NFS_SERVER(inode);
- int status;
- if (!nfs_server_capable(inode, NFS_CAP_SEEK))
- return -ENOTSUPP;
- status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context,
- lock, FMODE_READ);
- if (status) {
- if (status == -EAGAIN)
- status = -NFS4ERR_BAD_STATEID;
- return status;
- }
- status = nfs_filemap_write_and_wait_range(inode->i_mapping,
- offset, LLONG_MAX);
- if (status)
- return status;
- status = nfs4_call_sync(server->client, server, &msg,
- &args.seq_args, &res.seq_res, 0);
- if (status == -ENOTSUPP)
- server->caps &= ~NFS_CAP_SEEK;
- if (status)
- return status;
- if (whence == SEEK_DATA && res.sr_eof)
- return -NFS4ERR_NXIO;
- else
- return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
- }
- loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
- {
- struct nfs_server *server = NFS_SERVER(file_inode(filep));
- struct nfs4_exception exception = { };
- struct nfs_lock_context *lock;
- loff_t err;
- lock = nfs_get_lock_context(nfs_file_open_context(filep));
- if (IS_ERR(lock))
- return PTR_ERR(lock);
- exception.inode = file_inode(filep);
- exception.state = lock->open_context->state;
- do {
- err = _nfs42_proc_llseek(filep, lock, offset, whence);
- if (err >= 0)
- break;
- if (err == -ENOTSUPP) {
- err = -EOPNOTSUPP;
- break;
- }
- err = nfs4_handle_exception(server, err, &exception);
- } while (exception.retry);
- nfs_put_lock_context(lock);
- return err;
- }
- static void
- nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
- {
- struct nfs42_layoutstat_data *data = calldata;
- struct inode *inode = data->inode;
- struct nfs_server *server = NFS_SERVER(inode);
- struct pnfs_layout_hdr *lo;
- spin_lock(&inode->i_lock);
- lo = NFS_I(inode)->layout;
- if (!pnfs_layout_is_valid(lo)) {
- spin_unlock(&inode->i_lock);
- rpc_exit(task, 0);
- return;
- }
- nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid);
- spin_unlock(&inode->i_lock);
- nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
- &data->res.seq_res, task);
- }
- static void
- nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
- {
- struct nfs42_layoutstat_data *data = calldata;
- struct inode *inode = data->inode;
- struct pnfs_layout_hdr *lo;
- if (!nfs4_sequence_done(task, &data->res.seq_res))
- return;
- switch (task->tk_status) {
- case 0:
- return;
- case -NFS4ERR_BADHANDLE:
- case -ESTALE:
- pnfs_destroy_layout(NFS_I(inode));
- break;
- case -NFS4ERR_EXPIRED:
- case -NFS4ERR_ADMIN_REVOKED:
- case -NFS4ERR_DELEG_REVOKED:
- case -NFS4ERR_STALE_STATEID:
- case -NFS4ERR_BAD_STATEID:
- spin_lock(&inode->i_lock);
- lo = NFS_I(inode)->layout;
- if (pnfs_layout_is_valid(lo) &&
- nfs4_stateid_match(&data->args.stateid,
- &lo->plh_stateid)) {
- LIST_HEAD(head);
- /*
- * Mark the bad layout state as invalid, then retry
- * with the current stateid.
- */
- pnfs_mark_layout_stateid_invalid(lo, &head);
- spin_unlock(&inode->i_lock);
- pnfs_free_lseg_list(&head);
- nfs_commit_inode(inode, 0);
- } else
- spin_unlock(&inode->i_lock);
- break;
- case -NFS4ERR_OLD_STATEID:
- spin_lock(&inode->i_lock);
- lo = NFS_I(inode)->layout;
- if (pnfs_layout_is_valid(lo) &&
- nfs4_stateid_match_other(&data->args.stateid,
- &lo->plh_stateid)) {
- /* Do we need to delay before resending? */
- if (!nfs4_stateid_is_newer(&lo->plh_stateid,
- &data->args.stateid))
- rpc_delay(task, HZ);
- rpc_restart_call_prepare(task);
- }
- spin_unlock(&inode->i_lock);
- break;
- case -ENOTSUPP:
- case -EOPNOTSUPP:
- NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS;
- }
- trace_nfs4_layoutstats(inode, &data->args.stateid, task->tk_status);
- }
- static void
- nfs42_layoutstat_release(void *calldata)
- {
- struct nfs42_layoutstat_data *data = calldata;
- struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo;
- int i;
- for (i = 0; i < data->args.num_dev; i++) {
- if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free)
- devinfo[i].ld_private.ops->free(&devinfo[i].ld_private);
- }
- pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
- smp_mb__before_atomic();
- clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
- smp_mb__after_atomic();
- nfs_iput_and_deactive(data->inode);
- kfree(data->args.devinfo);
- kfree(data);
- }
- static const struct rpc_call_ops nfs42_layoutstat_ops = {
- .rpc_call_prepare = nfs42_layoutstat_prepare,
- .rpc_call_done = nfs42_layoutstat_done,
- .rpc_release = nfs42_layoutstat_release,
- };
- int nfs42_proc_layoutstats_generic(struct nfs_server *server,
- struct nfs42_layoutstat_data *data)
- {
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
- .rpc_argp = &data->args,
- .rpc_resp = &data->res,
- };
- struct rpc_task_setup task_setup = {
- .rpc_client = server->client,
- .rpc_message = &msg,
- .callback_ops = &nfs42_layoutstat_ops,
- .callback_data = data,
- .flags = RPC_TASK_ASYNC,
- };
- struct rpc_task *task;
- data->inode = nfs_igrab_and_active(data->args.inode);
- if (!data->inode) {
- nfs42_layoutstat_release(data);
- return -EAGAIN;
- }
- nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
- task = rpc_run_task(&task_setup);
- if (IS_ERR(task))
- return PTR_ERR(task);
- rpc_put_task(task);
- return 0;
- }
- static struct nfs42_layouterror_data *
- nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags)
- {
- struct nfs42_layouterror_data *data;
- struct inode *inode = lseg->pls_layout->plh_inode;
- data = kzalloc(sizeof(*data), gfp_flags);
- if (data) {
- data->args.inode = data->inode = nfs_igrab_and_active(inode);
- if (data->inode) {
- data->lseg = pnfs_get_lseg(lseg);
- if (data->lseg)
- return data;
- nfs_iput_and_deactive(data->inode);
- }
- kfree(data);
- }
- return NULL;
- }
- static void
- nfs42_free_layouterror_data(struct nfs42_layouterror_data *data)
- {
- pnfs_put_lseg(data->lseg);
- nfs_iput_and_deactive(data->inode);
- kfree(data);
- }
- static void
- nfs42_layouterror_prepare(struct rpc_task *task, void *calldata)
- {
- struct nfs42_layouterror_data *data = calldata;
- struct inode *inode = data->inode;
- struct nfs_server *server = NFS_SERVER(inode);
- struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
- unsigned i;
- spin_lock(&inode->i_lock);
- if (!pnfs_layout_is_valid(lo)) {
- spin_unlock(&inode->i_lock);
- rpc_exit(task, 0);
- return;
- }
- for (i = 0; i < data->args.num_errors; i++)
- nfs4_stateid_copy(&data->args.errors[i].stateid,
- &lo->plh_stateid);
- spin_unlock(&inode->i_lock);
- nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
- &data->res.seq_res, task);
- }
- static void
- nfs42_layouterror_done(struct rpc_task *task, void *calldata)
- {
- struct nfs42_layouterror_data *data = calldata;
- struct inode *inode = data->inode;
- struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
- if (!nfs4_sequence_done(task, &data->res.seq_res))
- return;
- switch (task->tk_status) {
- case 0:
- return;
- case -NFS4ERR_BADHANDLE:
- case -ESTALE:
- pnfs_destroy_layout(NFS_I(inode));
- break;
- case -NFS4ERR_EXPIRED:
- case -NFS4ERR_ADMIN_REVOKED:
- case -NFS4ERR_DELEG_REVOKED:
- case -NFS4ERR_STALE_STATEID:
- case -NFS4ERR_BAD_STATEID:
- spin_lock(&inode->i_lock);
- if (pnfs_layout_is_valid(lo) &&
- nfs4_stateid_match(&data->args.errors[0].stateid,
- &lo->plh_stateid)) {
- LIST_HEAD(head);
- /*
- * Mark the bad layout state as invalid, then retry
- * with the current stateid.
- */
- pnfs_mark_layout_stateid_invalid(lo, &head);
- spin_unlock(&inode->i_lock);
- pnfs_free_lseg_list(&head);
- nfs_commit_inode(inode, 0);
- } else
- spin_unlock(&inode->i_lock);
- break;
- case -NFS4ERR_OLD_STATEID:
- spin_lock(&inode->i_lock);
- if (pnfs_layout_is_valid(lo) &&
- nfs4_stateid_match_other(&data->args.errors[0].stateid,
- &lo->plh_stateid)) {
- /* Do we need to delay before resending? */
- if (!nfs4_stateid_is_newer(&lo->plh_stateid,
- &data->args.errors[0].stateid))
- rpc_delay(task, HZ);
- rpc_restart_call_prepare(task);
- }
- spin_unlock(&inode->i_lock);
- break;
- case -ENOTSUPP:
- case -EOPNOTSUPP:
- NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR;
- }
- trace_nfs4_layouterror(inode, &data->args.errors[0].stateid,
- task->tk_status);
- }
- static void
- nfs42_layouterror_release(void *calldata)
- {
- struct nfs42_layouterror_data *data = calldata;
- nfs42_free_layouterror_data(data);
- }
- static const struct rpc_call_ops nfs42_layouterror_ops = {
- .rpc_call_prepare = nfs42_layouterror_prepare,
- .rpc_call_done = nfs42_layouterror_done,
- .rpc_release = nfs42_layouterror_release,
- };
- int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
- const struct nfs42_layout_error *errors, size_t n)
- {
- struct inode *inode = lseg->pls_layout->plh_inode;
- struct nfs42_layouterror_data *data;
- struct rpc_task *task;
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR],
- };
- struct rpc_task_setup task_setup = {
- .rpc_message = &msg,
- .callback_ops = &nfs42_layouterror_ops,
- .flags = RPC_TASK_ASYNC,
- };
- unsigned int i;
- if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR))
- return -EOPNOTSUPP;
- if (n > NFS42_LAYOUTERROR_MAX)
- return -EINVAL;
- data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS);
- if (!data)
- return -ENOMEM;
- for (i = 0; i < n; i++) {
- data->args.errors[i] = errors[i];
- data->args.num_errors++;
- data->res.num_errors++;
- }
- msg.rpc_argp = &data->args;
- msg.rpc_resp = &data->res;
- task_setup.callback_data = data;
- task_setup.rpc_client = NFS_SERVER(inode)->client;
- nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
- task = rpc_run_task(&task_setup);
- if (IS_ERR(task))
- return PTR_ERR(task);
- rpc_put_task(task);
- return 0;
- }
- EXPORT_SYMBOL_GPL(nfs42_proc_layouterror);
- static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
- struct file *dst_f, struct nfs_lock_context *src_lock,
- struct nfs_lock_context *dst_lock, loff_t src_offset,
- loff_t dst_offset, loff_t count)
- {
- struct inode *src_inode = file_inode(src_f);
- struct inode *dst_inode = file_inode(dst_f);
- struct nfs_server *server = NFS_SERVER(dst_inode);
- struct nfs42_clone_args args = {
- .src_fh = NFS_FH(src_inode),
- .dst_fh = NFS_FH(dst_inode),
- .src_offset = src_offset,
- .dst_offset = dst_offset,
- .count = count,
- .dst_bitmask = server->cache_consistency_bitmask,
- };
- struct nfs42_clone_res res = {
- .server = server,
- };
- int status;
- msg->rpc_argp = &args;
- msg->rpc_resp = &res;
- status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context,
- src_lock, FMODE_READ);
- if (status) {
- if (status == -EAGAIN)
- status = -NFS4ERR_BAD_STATEID;
- return status;
- }
- status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
- dst_lock, FMODE_WRITE);
- if (status) {
- if (status == -EAGAIN)
- status = -NFS4ERR_BAD_STATEID;
- return status;
- }
- res.dst_fattr = nfs_alloc_fattr();
- if (!res.dst_fattr)
- return -ENOMEM;
- status = nfs4_call_sync(server->client, server, msg,
- &args.seq_args, &res.seq_res, 0);
- if (status == 0)
- status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
- kfree(res.dst_fattr);
- return status;
- }
- int nfs42_proc_clone(struct file *src_f, struct file *dst_f,
- loff_t src_offset, loff_t dst_offset, loff_t count)
- {
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE],
- };
- struct inode *inode = file_inode(src_f);
- struct nfs_server *server = NFS_SERVER(file_inode(src_f));
- struct nfs_lock_context *src_lock;
- struct nfs_lock_context *dst_lock;
- struct nfs4_exception src_exception = { };
- struct nfs4_exception dst_exception = { };
- int err, err2;
- if (!nfs_server_capable(inode, NFS_CAP_CLONE))
- return -EOPNOTSUPP;
- src_lock = nfs_get_lock_context(nfs_file_open_context(src_f));
- if (IS_ERR(src_lock))
- return PTR_ERR(src_lock);
- src_exception.inode = file_inode(src_f);
- src_exception.state = src_lock->open_context->state;
- dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f));
- if (IS_ERR(dst_lock)) {
- err = PTR_ERR(dst_lock);
- goto out_put_src_lock;
- }
- dst_exception.inode = file_inode(dst_f);
- dst_exception.state = dst_lock->open_context->state;
- do {
- err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock,
- src_offset, dst_offset, count);
- if (err == -ENOTSUPP || err == -EOPNOTSUPP) {
- NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE;
- err = -EOPNOTSUPP;
- break;
- }
- err2 = nfs4_handle_exception(server, err, &src_exception);
- err = nfs4_handle_exception(server, err, &dst_exception);
- if (!err)
- err = err2;
- } while (src_exception.retry || dst_exception.retry);
- nfs_put_lock_context(dst_lock);
- out_put_src_lock:
- nfs_put_lock_context(src_lock);
- return err;
- }
- #define NFS4XATTR_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE)
- static int _nfs42_proc_removexattr(struct inode *inode, const char *name)
- {
- struct nfs_server *server = NFS_SERVER(inode);
- struct nfs42_removexattrargs args = {
- .fh = NFS_FH(inode),
- .xattr_name = name,
- };
- struct nfs42_removexattrres res;
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVEXATTR],
- .rpc_argp = &args,
- .rpc_resp = &res,
- };
- int ret;
- unsigned long timestamp = jiffies;
- ret = nfs4_call_sync(server->client, server, &msg, &args.seq_args,
- &res.seq_res, 1);
- if (!ret)
- nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
- return ret;
- }
- static int _nfs42_proc_setxattr(struct inode *inode, const char *name,
- const void *buf, size_t buflen, int flags)
- {
- struct nfs_server *server = NFS_SERVER(inode);
- struct page *pages[NFS4XATTR_MAXPAGES];
- struct nfs42_setxattrargs arg = {
- .fh = NFS_FH(inode),
- .xattr_pages = pages,
- .xattr_len = buflen,
- .xattr_name = name,
- .xattr_flags = flags,
- };
- struct nfs42_setxattrres res;
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETXATTR],
- .rpc_argp = &arg,
- .rpc_resp = &res,
- };
- int ret, np;
- unsigned long timestamp = jiffies;
- if (buflen > server->sxasize)
- return -ERANGE;
- if (buflen > 0) {
- np = nfs4_buf_to_pages_noslab(buf, buflen, arg.xattr_pages);
- if (np < 0)
- return np;
- } else
- np = 0;
- ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
- &res.seq_res, 1);
- for (; np > 0; np--)
- put_page(pages[np - 1]);
- if (!ret)
- nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0);
- return ret;
- }
- static ssize_t _nfs42_proc_getxattr(struct inode *inode, const char *name,
- void *buf, size_t buflen)
- {
- struct nfs_server *server = NFS_SERVER(inode);
- struct page *pages[NFS4XATTR_MAXPAGES] = {};
- struct nfs42_getxattrargs arg = {
- .fh = NFS_FH(inode),
- .xattr_pages = pages,
- .xattr_len = buflen,
- .xattr_name = name,
- };
- struct nfs42_getxattrres res;
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETXATTR],
- .rpc_argp = &arg,
- .rpc_resp = &res,
- };
- int ret, np;
- ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
- &res.seq_res, 0);
- if (ret < 0)
- return ret;
- /*
- * Normally, the caching is done one layer up, but for successful
- * RPCS, always cache the result here, even if the caller was
- * just querying the length, or if the reply was too big for
- * the caller. This avoids a second RPC in the case of the
- * common query-alloc-retrieve cycle for xattrs.
- *
- * Note that xattr_len is always capped to XATTR_SIZE_MAX.
- */
- nfs4_xattr_cache_add(inode, name, NULL, pages, res.xattr_len);
- if (buflen) {
- if (res.xattr_len > buflen)
- return -ERANGE;
- _copy_from_pages(buf, pages, 0, res.xattr_len);
- }
- np = DIV_ROUND_UP(res.xattr_len, PAGE_SIZE);
- while (--np >= 0)
- __free_page(pages[np]);
- return res.xattr_len;
- }
- static ssize_t _nfs42_proc_listxattrs(struct inode *inode, void *buf,
- size_t buflen, u64 *cookiep, bool *eofp)
- {
- struct nfs_server *server = NFS_SERVER(inode);
- struct page **pages;
- struct nfs42_listxattrsargs arg = {
- .fh = NFS_FH(inode),
- .cookie = *cookiep,
- };
- struct nfs42_listxattrsres res = {
- .eof = false,
- .xattr_buf = buf,
- .xattr_len = buflen,
- };
- struct rpc_message msg = {
- .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LISTXATTRS],
- .rpc_argp = &arg,
- .rpc_resp = &res,
- };
- u32 xdrlen;
- int ret, np, i;
- ret = -ENOMEM;
- res.scratch = alloc_page(GFP_KERNEL);
- if (!res.scratch)
- goto out;
- xdrlen = nfs42_listxattr_xdrsize(buflen);
- if (xdrlen > server->lxasize)
- xdrlen = server->lxasize;
- np = xdrlen / PAGE_SIZE + 1;
- pages = kcalloc(np, sizeof(struct page *), GFP_KERNEL);
- if (!pages)
- goto out_free_scratch;
- for (i = 0; i < np; i++) {
- pages[i] = alloc_page(GFP_KERNEL);
- if (!pages[i])
- goto out_free_pages;
- }
- arg.xattr_pages = pages;
- arg.count = xdrlen;
- ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args,
- &res.seq_res, 0);
- if (ret >= 0) {
- ret = res.copied;
- *cookiep = res.cookie;
- *eofp = res.eof;
- }
- out_free_pages:
- while (--np >= 0) {
- if (pages[np])
- __free_page(pages[np]);
- }
- kfree(pages);
- out_free_scratch:
- __free_page(res.scratch);
- out:
- return ret;
- }
- ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name,
- void *buf, size_t buflen)
- {
- struct nfs4_exception exception = { };
- ssize_t err;
- do {
- err = _nfs42_proc_getxattr(inode, name, buf, buflen);
- if (err >= 0)
- break;
- err = nfs4_handle_exception(NFS_SERVER(inode), err,
- &exception);
- } while (exception.retry);
- return err;
- }
- int nfs42_proc_setxattr(struct inode *inode, const char *name,
- const void *buf, size_t buflen, int flags)
- {
- struct nfs4_exception exception = { };
- int err;
- do {
- err = _nfs42_proc_setxattr(inode, name, buf, buflen, flags);
- if (!err)
- break;
- err = nfs4_handle_exception(NFS_SERVER(inode), err,
- &exception);
- } while (exception.retry);
- return err;
- }
- ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf,
- size_t buflen, u64 *cookiep, bool *eofp)
- {
- struct nfs4_exception exception = { };
- ssize_t err;
- do {
- err = _nfs42_proc_listxattrs(inode, buf, buflen,
- cookiep, eofp);
- if (err >= 0)
- break;
- err = nfs4_handle_exception(NFS_SERVER(inode), err,
- &exception);
- } while (exception.retry);
- return err;
- }
- int nfs42_proc_removexattr(struct inode *inode, const char *name)
- {
- struct nfs4_exception exception = { };
- int err;
- do {
- err = _nfs42_proc_removexattr(inode, name);
- if (!err)
- break;
- err = nfs4_handle_exception(NFS_SERVER(inode), err,
- &exception);
- } while (exception.retry);
- return err;
- }
|