From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> Switch the mount code to use xprt_find_transport_ident() and to check the results before allowing the mount to proceed. Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> --- fs/nfs/fs_context.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c index 29ec8b09a52d..06894bcdea2d 100644 --- a/fs/nfs/fs_context.c +++ b/fs/nfs/fs_context.c @@ -510,13 +510,12 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, ctx->nfs_server.protocol = XPRT_TRANSPORT_UDP; break; case Opt_tcp: - ctx->flags |= NFS_MOUNT_TCP; - ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP; - break; case Opt_rdma: ctx->flags |= NFS_MOUNT_TCP; /* for side protocols */ - ctx->nfs_server.protocol = XPRT_TRANSPORT_RDMA; - xprt_load_transport(param->key); + ret = xprt_find_transport_ident(param->key); + if (ret < 0) + goto out_bad_transport; + ctx->nfs_server.protocol = ret; break; case Opt_acl: if (result.negated) @@ -670,11 +669,13 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, case Opt_xprt_rdma: /* vector side protocols to TCP */ ctx->flags |= NFS_MOUNT_TCP; - ctx->nfs_server.protocol = XPRT_TRANSPORT_RDMA; - xprt_load_transport(param->string); + ret = xprt_find_transport_ident(param->string); + if (ret < 0) + goto out_bad_transport; + ctx->nfs_server.protocol = ret; break; default: - return nfs_invalf(fc, "NFS: Unrecognized transport protocol"); + goto out_bad_transport; } ctx->protofamily = protofamily; @@ -697,7 +698,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, break; case Opt_xprt_rdma: /* not used for side protocols */ default: - return nfs_invalf(fc, "NFS: Unrecognized transport protocol"); + goto out_bad_transport; } ctx->mountfamily = mountfamily; break; @@ -787,6 +788,8 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, return nfs_invalf(fc, "NFS: Bad IP address specified"); out_of_bounds: return nfs_invalf(fc, "NFS: Value for '%s' out of range", param->key); +out_bad_transport: + return nfs_invalf(fc, "NFS: Unrecognized transport protocol"); } /* -- 2.28.0
