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Improve fdt_isprint so that it returns false if there are consecutive 

zeroes.
This commit is contained in:
skrll 2021-03-06 13:21:26 +00:00
parent b3185c1480
commit c901baed96
1 changed files with 11 additions and 3 deletions
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14
sys/dev/fdt/fdt_ddb.c
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@ -1,4 +1,4 @@
/* $NetBSD: fdt_ddb.c,v 1.1 2020/10/30 16:08:45 skrll Exp $ */
/* $NetBSD: fdt_ddb.c,v 1.2 2021/03/06 13:21:26 skrll Exp $ */
/*-
* Copyright (c) 2020 The NetBSD Foundation, Inc.
@ -31,7 +31,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: fdt_ddb.c,v 1.1 2020/10/30 16:08:45 skrll Exp $");
__KERNEL_RCSID(0, "$NetBSD: fdt_ddb.c,v 1.2 2021/03/06 13:21:26 skrll Exp $");
#include <sys/param.h>
@ -49,8 +49,16 @@ fdt_isprint(const void *data, int len)
if (len == 0)
return false;
/* Count consecutive zeroes */
int cz = 0;
for (size_t j = 0; j < len; j++) {
if (!(isprint(c[j]) || c[j] == '\0'))
if (c[j] == '\0')
cz++;
else if (isprint(c[j]))
cz = 0;
else
return false;
if (cz > 1)
return false;
}
return true;