android/android_kernel_xiaomi_sm8450
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NFS: remount with security change should return EINVAL

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A remount that alters security flavors can appear to succeed when it should
instead return -EINVAL.  Check to see if the current security flavor exists
within the flavors specified in the remount options, and if not fail the
remount.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Benjamin Coddington 2014-12-05 21:52:49 -05:00 committed by Trond Myklebust
parent df137bc125
commit 09a330f4b9
1 changed files with 1 additions and 2 deletions
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3
fs/nfs/super.c
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@ -2193,7 +2193,7 @@ nfs_compare_remount_data(struct nfs_server *nfss,
data->version != nfss->nfs_client->rpc_ops->version ||
data->minorversion != nfss->nfs_client->cl_minorversion ||
data->retrans != nfss->client->cl_timeout->to_retries ||
data->selected_flavor != nfss->client->cl_auth->au_flavor ||
!nfs_auth_info_match(&data->auth_info, nfss->client->cl_auth->au_flavor) ||
data->acregmin != nfss->acregmin / HZ ||
data->acregmax != nfss->acregmax / HZ ||
data->acdirmin != nfss->acdirmin / HZ ||
@ -2241,7 +2241,6 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
data->wsize = nfss->wsize;
data->retrans = nfss->client->cl_timeout->to_retries;
data->selected_flavor = nfss->client->cl_auth->au_flavor;
data->auth_info = nfss->auth_info;
data->acregmin = nfss->acregmin / HZ;
data->acregmax = nfss->acregmax / HZ;
data->acdirmin = nfss->acdirmin / HZ;