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sockets: Initialize the whole ancillary data buffer not only the actual struct

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This avoids uninitialized bytes that Valgrind seems to notice otherwise.

Fixes #395.
This commit is contained in:
Tobias Brunner
2013-09-10 13:42:59 +02:00
parent 7d938be9e9
commit 4eb6149ae8
2 changed files with 4 additions and 4 deletions
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src/libcharon/plugins/socket_default/socket_default_socket.c
+2 -2
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@@ -445,6 +445,7 @@ METHOD(socket_t, sender, status_t,
#elif defined(IP_SENDSRCADDR)
char buf[CMSG_SPACE(sizeof(struct in_addr))];
#endif
memset(buf, 0, sizeof(buf));
msg.msg_control = buf;
msg.msg_controllen = sizeof(buf);
cmsg = CMSG_FIRSTHDR(&msg);
@@ -453,7 +454,6 @@ METHOD(socket_t, sender, status_t,
cmsg->cmsg_type = IP_PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in_pktinfo));
pktinfo = (struct in_pktinfo*)CMSG_DATA(cmsg);
memset(pktinfo, 0, sizeof(struct in_pktinfo));
addr = &pktinfo->ipi_spec_dst;
#elif defined(IP_SENDSRCADDR)
cmsg->cmsg_type = IP_SENDSRCADDR;
@@ -471,6 +471,7 @@ METHOD(socket_t, sender, status_t,
struct in6_pktinfo *pktinfo;
struct sockaddr_in6 *sin;
memset(buf, 0, sizeof(buf));
msg.msg_control = buf;
msg.msg_controllen = sizeof(buf);
cmsg = CMSG_FIRSTHDR(&msg);
@@ -478,7 +479,6 @@ METHOD(socket_t, sender, status_t,
cmsg->cmsg_type = IPV6_PKTINFO;
cmsg->cmsg_len = CMSG_LEN(sizeof(struct in6_pktinfo));
pktinfo = (struct in6_pktinfo*)CMSG_DATA(cmsg);
memset(pktinfo, 0, sizeof(struct in6_pktinfo));
sin = (struct sockaddr_in6*)src->get_sockaddr(src);
memcpy(&pktinfo->ipi6_addr, &sin->sin6_addr, sizeof(struct in6_addr));
}