[PATCH v1 09/13] NFSD: Map every NFS_ACLv3 reply status into aclstat3

[Chuck Lever <cel@kernel.org>]

nfsd3_map_status() translates only the two fh_verify() statuses that
have no NFSv3 equivalent, so every other status reaches the encoder
unchanged. fh_verify() and fh_getattr() pass errno values through
nfserrno(), whose table produces NFSv3 status values that aclstat3
does not define. draft-ietf-nfsv4-nfs-acl Section 6.2 lists the
status values an NFS_ACLv3 server returns, and those are not among
them.

Pass through the statuses that are members of aclstat3 and map the
rest to ACL3ERR_SERVERFAULT, the status nfsd3_map_errno() already
uses for an unlisted errno. The existing NOFILEHANDLE and WRONGSEC
translations are unchanged.

Signed-off-by: Chuck Lever <cel@kernel.org>
---
 fs/nfsd/nfs3acl.c | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c
index 19f5a6127673..66bb650e99f4 100644
--- a/fs/nfsd/nfs3acl.c
+++ b/fs/nfsd/nfs3acl.c
@@ -124,14 +124,28 @@ static __be32 nfsd3_map_errno(int errno)
 static __be32 nfsd3_map_status(__be32 status)
 {
 	switch (status) {
+	case acl3_ok:
+	case acl3err_perm:
+	case acl3err_noent:
+	case acl3err_io:
+	case acl3err_acces:
+	case acl3err_inval:
+	case acl3err_nospc:
+	case acl3err_rofs:
+	case acl3err_dquot:
+	case acl3err_stale:
+	case acl3err_badhandle:
+	case acl3err_notsupp:
+	case acl3err_serverfault:
+	case acl3err_jukebox:
+		return status;
 	case cpu_to_be32(NFS4ERR_NOFILEHANDLE):
-		status = acl3err_badhandle;
-		break;
+		return acl3err_badhandle;
 	case cpu_to_be32(NFS4ERR_WRONGSEC):
-		status = acl3err_acces;
-		break;
+		return acl3err_acces;
+	default:
+		return acl3err_serverfault;
 	}
-	return status;
 }
 
 static bool
-- 
2.56.0