From 8e823bafff2308753d430566256c83d8085952da Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 18 Oct 2022 07:47:54 -0400 Subject: nfsd: ignore requests to disable unsupported versions The kernel currently errors out if you attempt to enable or disable a version that it doesn't recognize. Change it to ignore attempts to disable an unrecognized version. If we don't support it, then there is no harm in doing so. Signed-off-by: Jeff Layton Reviewed-by: Tom Talpey Signed-off-by: Chuck Lever --- fs/nfsd/nfsctl.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'fs/nfsd/nfsctl.c') diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index dc74a947a440..68ed42fd29fc 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -601,7 +601,9 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size) } break; default: - return -EINVAL; + /* Ignore requests to disable non-existent versions */ + if (cmd == NFSD_SET) + return -EINVAL; } vers += len + 1; } while ((len = qword_get(&mesg, vers, size)) > 0); -- cgit