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nfs4: add NFSv4 LOOKUPP handlers

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This will be needed in order to implement the get_parent export op
for nfsd.

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Jeff Layton
2017-06-29 06:34:52 -07:00
committed by Anna Schumaker
parent f174ff7a0a
commit 5b5faaf6df
5 changed files with 170 additions and 1 deletions
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49
fs/nfs/nfs4proc.c
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@@ -3805,6 +3805,54 @@ nfs4_proc_lookup_mountpoint(struct inode *dir, const struct qstr *name,
return (client == NFS_CLIENT(dir)) ? rpc_clone_client(client) : client;
}
static int _nfs4_proc_lookupp(struct inode *inode,
struct nfs_fh *fhandle, struct nfs_fattr *fattr,
struct nfs4_label *label)
{
struct rpc_clnt *clnt = NFS_CLIENT(inode);
struct nfs_server *server = NFS_SERVER(inode);
int status;
struct nfs4_lookupp_arg args = {
.bitmask = server->attr_bitmask,
.fh = NFS_FH(inode),
};
struct nfs4_lookupp_res res = {
.server = server,
.fattr = fattr,
.label = label,
.fh = fhandle,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOOKUPP],
.rpc_argp = &args,
.rpc_resp = &res,
};
args.bitmask = nfs4_bitmask(server, label);
nfs_fattr_init(fattr);
dprintk("NFS call lookupp ino=0x%lx\n", inode->i_ino);
status = nfs4_call_sync(clnt, server, &msg, &args.seq_args,
&res.seq_res, 0);
dprintk("NFS reply lookupp: %d\n", status);
return status;
}
static int nfs4_proc_lookupp(struct inode *inode, struct nfs_fh *fhandle,
struct nfs_fattr *fattr, struct nfs4_label *label)
{
struct nfs4_exception exception = { };
int err;
do {
err = _nfs4_proc_lookupp(inode, fhandle, fattr, label);
trace_nfs4_lookupp(inode, err);
err = nfs4_handle_exception(NFS_SERVER(inode), err,
&exception);
} while (exception.retry);
return err;
}
static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry)
{
struct nfs_server *server = NFS_SERVER(inode);
@@ -9314,6 +9362,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
.getattr = nfs4_proc_getattr,
.setattr = nfs4_proc_setattr,
.lookup = nfs4_proc_lookup,
.lookupp = nfs4_proc_lookupp,
.access = nfs4_proc_access,
.readlink = nfs4_proc_readlink,
.create = nfs4_proc_create,