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path: root/fs/nfs/super.c
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Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r--fs/nfs/super.c22
1 files changed, 6 insertions, 16 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 2f7e7f20c91..4bbdbf6de41 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2125,6 +2125,8 @@ static int nfs4_validate_mount_data(void *options,
args->acdirmin = NFS_DEF_ACDIRMIN;
args->acdirmax = NFS_DEF_ACDIRMAX;
args->nfs_server.port = NFS_PORT; /* 2049 unless user set port= */
+ args->auth_flavors[0] = RPC_AUTH_UNIX;
+ args->auth_flavor_len = 0;
switch (data->version) {
case 1:
@@ -2140,18 +2142,13 @@ static int nfs4_validate_mount_data(void *options,
&args->nfs_server.address))
goto out_no_address;
- switch (data->auth_flavourlen) {
- case 0:
- args->auth_flavors[0] = RPC_AUTH_UNIX;
- break;
- case 1:
+ if (data->auth_flavourlen) {
+ if (data->auth_flavourlen > 1)
+ goto out_inval_auth;
if (copy_from_user(&args->auth_flavors[0],
data->auth_flavours,
sizeof(args->auth_flavors[0])))
return -EFAULT;
- break;
- default:
- goto out_inval_auth;
}
c = strndup_user(data->hostname.data, NFS4_MAXNAMLEN);
@@ -2203,15 +2200,8 @@ static int nfs4_validate_mount_data(void *options,
nfs_validate_transport_protocol(args);
- switch (args->auth_flavor_len) {
- case 0:
- args->auth_flavors[0] = RPC_AUTH_UNIX;
- break;
- case 1:
- break;
- default:
+ if (args->auth_flavor_len > 1)
goto out_inval_auth;
- }
if (args->client_address == NULL)
goto out_no_client_address;