33 lines
1.3 KiB
Diff
33 lines
1.3 KiB
Diff
From 467b621fb7da6e1318ac7204325b0adb01b3ff19 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20Men=C5=A1=C3=ADk?= <pemensik@redhat.com>
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Date: Fri, 3 Sep 2021 16:48:50 +0200
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Subject: [PATCH 07/15] Retry dhcp6 ping on interrupts
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Error: CHECKED_RETURN (CWE-252): [#def35]
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dnsmasq-2.86test7/src/dhcp6.c:295: check_return: Calling "sendto(dnsmasq_daemon->icmp6fd, &neigh, 24UL, 0, __CONST_SOCKADDR_ARG({.__sockaddr__ = &addr.sa}), 28U)" without checking return value. This library function may fail and return an error code.
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# 293| break;
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# 294|
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# 295|-> sendto(daemon->icmp6fd, &neigh, sizeof(neigh), 0, &addr.sa, sizeof(addr));
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# 296|
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# 297| ts.tv_sec = 0;
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---
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src/dhcp6.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/dhcp6.c b/src/dhcp6.c
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index 2be877f..ae1f5c1 100644
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--- a/src/dhcp6.c
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+++ b/src/dhcp6.c
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@@ -292,7 +292,7 @@ void get_client_mac(struct in6_addr *client, int iface, unsigned char *mac, unsi
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if ((maclen = find_mac(&addr, mac, 0, now)) != 0)
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break;
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- sendto(daemon->icmp6fd, &neigh, sizeof(neigh), 0, &addr.sa, sizeof(addr));
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+ while(retry_send(sendto(daemon->icmp6fd, &neigh, sizeof(neigh), 0, &addr.sa, sizeof(addr))));
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ts.tv_sec = 0;
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ts.tv_nsec = 100000000; /* 100ms */
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--
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2.31.1
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