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Commit 6e88e061 authored by Chuck Lever's avatar Chuck Lever Committed by Trond Myklebust
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NFS: Verify server address before invoking in-kernel mount client 



Re-order mount option sanity checking slightly to ensure we have a valid
server address *before* trying to do the mountd RPC call.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 113632d0

fs/nfs/super.c

+8 −4
Original line number Diff line number Diff line
@@ -1100,6 +1100,10 @@ static int nfs_validate_mount_data(void *options, 
		if (mntfh->size < sizeof(mntfh->data))

			memset(mntfh->data + mntfh->size, 0,

			       sizeof(mntfh->data) - mntfh->size);



		if (!nfs_verify_server_address((struct sockaddr *) &data->addr))

			goto out_no_address;



		/*

		 * Translate to nfs_parsed_mount_data, which nfs_fill_super

		 * can deal with.
@@ -1131,6 +1135,10 @@ static int nfs_validate_mount_data(void *options, 
		if (nfs_parse_mount_options((char *)options, args) == 0)

			return -EINVAL;



		if (!nfs_verify_server_address((struct sockaddr *)

						&args->nfs_server.address))

			goto out_no_address;



		c = strchr(dev_name, ':');

		if (c == NULL)

			return -EINVAL;
@@ -1159,10 +1167,6 @@ static int nfs_validate_mount_data(void *options, 
		goto out_v3_not_compiled;

#endif /* !CONFIG_NFS_V3 */



	if (!nfs_verify_server_address((struct sockaddr *)

						&args->nfs_server.address))

		goto out_no_address;



	return 0;



out_no_data: