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ttwrite(9): Assert we mangle uio_resid only if we also return error.

This commit is contained in:
riastradh 2023-04-11 10:23:47 +00:00
parent 74b6ad6f76
commit b72c60c2e8
1 changed files with 3 additions and 2 deletions
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5
sys/kern/tty.c
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@ -1,4 +1,4 @@
/* $NetBSD: tty.c,v 1.308 2023/02/17 23:13:01 riastradh Exp $ */
/* $NetBSD: tty.c,v 1.309 2023/04/11 10:23:47 riastradh Exp $ */
/*-
* Copyright (c) 2008, 2020 The NetBSD Foundation, Inc.
@ -63,7 +63,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: tty.c,v 1.308 2023/02/17 23:13:01 riastradh Exp $");
__KERNEL_RCSID(0, "$NetBSD: tty.c,v 1.309 2023/04/11 10:23:47 riastradh Exp $");
#ifdef _KERNEL_OPT
#include "opt_compat_netbsd.h"
@ -2380,6 +2380,7 @@ ttwrite(struct tty *tp, struct uio *uio, int flag)
* offset and iov pointers have moved forward, but it doesn't matter
* (the call will either return short or restart with a new uio).
*/
KASSERTMSG(error || cc == 0, "error=%d cc=%d", error, cc);
uio->uio_resid += cc;
return (error);