[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/nfs/nfs42proc.c b/src/kernel/linux/v4.14/fs/nfs/nfs42proc.c
new file mode 100644
index 0000000..9c37444
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/nfs/nfs42proc.c
@@ -0,0 +1,572 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
+ */
+#include <linux/fs.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"
+
+#define NFSDBG_FACILITY NFSDBG_PROC
+
+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);
+ struct nfs42_falloc_args args = {
+ .falloc_fh = NFS_FH(inode),
+ .falloc_offset = offset,
+ .falloc_length = len,
+ .falloc_bitmask = server->cache_consistency_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)
+ return status;
+
+ 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(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 nfs_server *server = NFS_SERVER(file_inode(filep));
+ 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 = file_inode(filep);
+ exception.state = lock->open_context->state;
+
+ 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);
+
+ 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 = nfs_sync_inode(inode);
+ if (err)
+ goto out_unlock;
+
+ 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;
+out_unlock:
+ inode_unlock(inode);
+ return err;
+}
+
+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 rpc_message msg = {
+ .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY],
+ .rpc_argp = args,
+ .rpc_resp = res,
+ };
+ struct inode *dst_inode = file_inode(dst);
+ struct nfs_server *server = NFS_SERVER(dst_inode);
+ loff_t pos_src = args->src_pos;
+ loff_t pos_dst = args->dst_pos;
+ size_t count = args->count;
+ ssize_t status;
+
+ status = nfs4_set_rw_stateid(&args->src_stateid, src_lock->open_context,
+ src_lock, FMODE_READ);
+ if (status)
+ 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)
+ return status;
+
+ status = nfs_sync_inode(dst_inode);
+ if (status)
+ return status;
+
+ res->commit_res.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
+ if (!res->commit_res.verf)
+ return -ENOMEM;
+ status = nfs4_call_sync(server->client, server, &msg,
+ &args->seq_args, &res->seq_res, 0);
+ if (status == -ENOTSUPP)
+ server->caps &= ~NFS_CAP_COPY;
+ if (status)
+ goto out;
+
+ if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
+ &res->commit_res.verf->verifier)) {
+ status = -EAGAIN;
+ goto out;
+ }
+
+ truncate_pagecache_range(dst_inode, pos_dst,
+ pos_dst + res->write_res.count);
+
+ status = res->write_res.count;
+out:
+ 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 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,
+ };
+ 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;
+
+ if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY))
+ return -EOPNOTSUPP;
+
+ 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);
+ inode_unlock(file_inode(dst));
+
+ if (err >= 0)
+ break;
+ if (err == -ENOTSUPP) {
+ err = -EOPNOTSUPP;
+ break;
+ } if (err == -EAGAIN) {
+ dst_exception.retry = 1;
+ continue;
+ }
+
+ 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;
+}
+
+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)
+ 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;
+
+ 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:
+ 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;
+ }
+}
+
+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);
+ task = rpc_run_task(&task_setup);
+ if (IS_ERR(task))
+ return PTR_ERR(task);
+ rpc_put_task(task);
+ return 0;
+}
+
+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)
+ return status;
+
+ status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context,
+ dst_lock, FMODE_WRITE);
+ if (status)
+ 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;
+}