From: Sven Eckelmann <sven@narfation.org>
To: b.a.t.m.a.n@lists.open-mesh.org
Cc: Sven Eckelmann <sven@narfation.org>
Subject: [B.A.T.M.A.N.] [PATCH 5/6] batctl: Initialize complete ping packet before write
Date: Sat, 24 May 2014 14:16:43 +0200 [thread overview]
Message-ID: <1400933804-9661-5-git-send-email-sven@narfation.org> (raw)
In-Reply-To: <1400933804-9661-1-git-send-email-sven@narfation.org>
The data structure for ping packets is not completely initialized by the
userspace because the kernel sets the originator address of the packet. This
is not only a bad practice but also irritate tools like valgrind.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
ping.c | 1 +
traceroute.c | 1 +
2 files changed, 2 insertions(+)
diff --git a/ping.c b/ping.c
index 6642188..bdca222 100644
--- a/ping.c
+++ b/ping.c
@@ -176,6 +176,7 @@ int ping(char *mesh_iface, int argc, char **argv)
packet_len = sizeof(struct batadv_icmp_packet);
+ memset(&icmp_packet_out, 0, sizeof(icmp_packet_out));
memcpy(&icmp_packet_out.dst, dst_mac, ETH_ALEN);
icmp_packet_out.packet_type = BATADV_ICMP;
icmp_packet_out.version = BATADV_COMPAT_VERSION;
diff --git a/traceroute.c b/traceroute.c
index 22b90f2..4ebfec2 100644
--- a/traceroute.c
+++ b/traceroute.c
@@ -133,6 +133,7 @@ int traceroute(char *mesh_iface, int argc, char **argv)
goto out;
}
+ memset(&icmp_packet_out, 0, sizeof(icmp_packet_out));
memcpy(&icmp_packet_out.dst, dst_mac, ETH_ALEN);
icmp_packet_out.version = BATADV_COMPAT_VERSION;
icmp_packet_out.packet_type = BATADV_ICMP;
--
2.0.0.rc2
next prev parent reply other threads:[~2014-05-24 12:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-24 12:16 [B.A.T.M.A.N.] [PATCH 1/6] batctl: Don't try to close negative file descriptors Sven Eckelmann
2014-05-24 12:16 ` [B.A.T.M.A.N.] [PATCH 2/6] batctl: Force null termination of string after strncpy Sven Eckelmann
2014-06-10 14:41 ` Marek Lindner
2014-05-24 12:16 ` [B.A.T.M.A.N.] [PATCH 3/6] batctl: Use strncpy instead of strcpy for string copy Sven Eckelmann
2014-06-10 14:49 ` Marek Lindner
2014-05-24 12:16 ` [B.A.T.M.A.N.] [PATCH 4/6] batctl: Return success only with valid line_ptr in read_file Sven Eckelmann
2014-06-10 14:53 ` Marek Lindner
2014-05-24 12:16 ` Sven Eckelmann [this message]
2014-06-10 14:58 ` [B.A.T.M.A.N.] [PATCH 5/6] batctl: Initialize complete ping packet before write Marek Lindner
2014-05-24 12:16 ` [B.A.T.M.A.N.] [PATCH 6/6] batctl: Don't provide uninitialized parameter to read_file Sven Eckelmann
2014-06-10 14:59 ` Marek Lindner
2014-06-10 14:31 ` [B.A.T.M.A.N.] [PATCH 1/6] batctl: Don't try to close negative file descriptors Marek Lindner
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