diff options
| author | Reyk Floeter <reyk@cvs.openbsd.org> | 2006-02-25 13:38:26 +0000 |
|---|---|---|
| committer | Reyk Floeter <reyk@cvs.openbsd.org> | 2006-02-25 13:38:26 +0000 |
| commit | 8ee2a01b688cb3911668295c00b731329070a8a1 (patch) | |
| tree | 21a0408a0cee0ead46502948772e5e99d30a7b3e /usr.sbin | |
| parent | 91980a89db21749bba52c0c5439ebf25e7eddab4 (diff) | |
fix for hostapd_printf() from Andrey Matveev:
---snip---
We allocate some memory with va_start() for storage variable arguments
in dynamic mode. va_end() takes care about clearing this memory.
Therefore we should be sure, that to each va_start() there corresponds
va_end() call. And on error path too.
---snap---
Diffstat (limited to 'usr.sbin')
| -rw-r--r-- | usr.sbin/hostapd/hostapd.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/usr.sbin/hostapd/hostapd.c b/usr.sbin/hostapd/hostapd.c index e08c4f525a5..f23d0f43247 100644 --- a/usr.sbin/hostapd/hostapd.c +++ b/usr.sbin/hostapd/hostapd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: hostapd.c,v 1.26 2005/12/18 17:54:12 reyk Exp $ */ +/* $OpenBSD: hostapd.c,v 1.27 2006/02/25 13:38:25 reyk Exp $ */ /* * Copyright (c) 2004, 2005 Reyk Floeter <reyk@openbsd.org> @@ -90,25 +90,29 @@ hostapd_printf(const char *fmt, ...) va_list ap; size_t n; - if (fmt == NULL) { - flush: - hostapd_log(HOSTAPD_LOG, "%s", printbuf); - bzero(printbuf, sizeof(printbuf)); - return; - } + if (fmt == NULL) + goto flush; va_start(ap, fmt); bzero(newfmt, sizeof(newfmt)); if ((n = strlcpy(newfmt, printbuf, sizeof(newfmt))) >= sizeof(newfmt)) - goto flush; + goto va_flush; if (strlcpy(newfmt + n, fmt, sizeof(newfmt) - n) >= sizeof(newfmt) - n) - goto flush; + goto va_flush; if (vsnprintf(printbuf, sizeof(printbuf), newfmt, ap) == -1) - goto flush; + goto va_flush; va_end(ap); if (fmt[0] == '\n') goto flush; + + return; + + va_flush: + va_end(ap); + flush: + hostapd_log(HOSTAPD_LOG, "%s", printbuf); + bzero(printbuf, sizeof(printbuf)); } void |