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kernel-netlink: Actually verify if the netlink message exceeds the buffer size

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It might equal it and that's fine. With MSG_TRUNC we get the actual
message size and can only report an error if we haven't received the
complete message.
This commit is contained in:
Tobias Brunner
2015-08-04 14:15:18 +02:00
parent a7f381ef00
commit a6896b6149
1 changed files with 2 additions and 2 deletions
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src/libhydra/plugins/kernel_netlink/kernel_netlink_shared.c
+2 -2
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@@ -185,8 +185,8 @@ static ssize_t read_msg(private_netlink_socket_t *this,
return -1; return -1;
} }
} }
len = recv(this->socket, buf, buflen, block ? 0 : MSG_DONTWAIT); len = recv(this->socket, buf, buflen, MSG_TRUNC|(block ? 0 : MSG_DONTWAIT));
if (len == buflen) if (len > buflen)
{ {
DBG1(DBG_KNL, "netlink response exceeds buffer size"); DBG1(DBG_KNL, "netlink response exceeds buffer size");
return 0; return 0;