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nfs: have nfs_mount fake up a auth_flavs list when the server didn't provide it 

Instead of handling this as a special case in the auth-selection code,
we can simply fake up an auth_flavs list when the server doesn't
provide it.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Jeff Layton 2013-06-27 15:54:40 -04:00 committed by Trond Myklebust
parent 294ae81d4f
commit fb9b02fda0
2 changed files with 13 additions and 14 deletions
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14
fs/nfs/mount_clnt.c
View File

@ -139,7 +139,10 @@ struct mnt_fhstatus {
* nfs_mount - Obtain an NFS file handle for the given host and path
* @info: pointer to mount request arguments
*
* Uses default timeout parameters specified by underlying transport.
* Uses default timeout parameters specified by underlying transport. On
* successful return, the auth_flavs list and auth_flav_len will be populated
* with the list from the server or a faked-up list if the server didn't
* provide one.
*/
int nfs_mount(struct nfs_mount_request *info)
{
@ -195,6 +198,15 @@ int nfs_mount(struct nfs_mount_request *info)
dprintk("NFS: MNT request succeeded\n");
status = 0;
/*
* If the server didn't provide a flavor list, allow the
* client to try any flavor.
*/
if (info->version != NFS_MNT3_VERSION || *info->auth_flav_len == 0) {
dprintk("NFS: Faking up auth_flavs list\n");
info->auth_flavs[0] = RPC_AUTH_NULL;
*info->auth_flav_len = 1;
}
out:
return status;

13
fs/nfs/super.c
View File

@ -1619,19 +1619,6 @@ static int nfs_select_flavor(struct nfs_parsed_mount_data *args,
unsigned int i, count = *(request->auth_flav_len);
rpc_authflavor_t flavor;
/*
* The NFSv2 MNT operation does not return a flavor list.
*/
if (args->mount_server.version != NFS_MNT3_VERSION)
goto out_default;
/*
* Certain releases of Linux's mountd return an empty
* flavor list in some cases.
*/
if (count == 0)
goto out_default;
/*
* If the sec= mount option is used, the specified flavor or AUTH_NULL
* must be in the list returned by the server.