X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd-network%2Fdhcp-internal.h;h=6f6f1218d956ed8e574342b321a8cd272f817c67;hb=54d61deb7bffec5ca22cf765b13afbb0af547868;hp=76d357a6ed82b4b2205b465bc1f1dfd84ed04f18;hpb=04b28be1a306fd2ba454d3ee333d63df71aa3873;p=elogind.git

diff --git a/src/libsystemd-network/dhcp-internal.h b/src/libsystemd-network/dhcp-internal.h
index 76d357a6e..6f6f1218d 100644
--- a/src/libsystemd-network/dhcp-internal.h
+++ b/src/libsystemd-network/dhcp-internal.h
@@ -27,6 +27,7 @@
 
 #include "socket-util.h"
 
+#include "sd-dhcp-client.h"
 #include "dhcp-protocol.h"
 
 int dhcp_network_bind_raw_socket(int index, union sockaddr_union *link, uint32_t xid);
@@ -48,7 +49,7 @@ int dhcp_option_parse(DHCPMessage *message, size_t len,
 int dhcp_message_init(DHCPMessage *message, uint8_t op, uint32_t xid, uint8_t type,
                       size_t optlen, size_t *optoffset);
 
-uint16_t dhcp_packet_checksum(void *buf, size_t len);
+uint16_t dhcp_packet_checksum(uint8_t *buf, size_t len);
 
 void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr,
                                    uint16_t source, be32_t destination_addr,
@@ -56,4 +57,13 @@ void dhcp_packet_append_ip_headers(DHCPPacket *packet, be32_t source_addr,
 
 int dhcp_packet_verify_headers(DHCPPacket *packet, size_t len, bool checksum);
 
+DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp_client*, sd_dhcp_client_unref);
+#define _cleanup_dhcp_client_unref_ _cleanup_(sd_dhcp_client_unrefp)
+
+/* If we are invoking callbacks of a dhcp-client, ensure unreffing the
+ * client from the callback doesn't destroy the object we are working
+ * on */
+#define DHCP_CLIENT_DONT_DESTROY(client) \
+        _cleanup_dhcp_client_unref_ _unused_ sd_dhcp_client *_dont_destroy_##client = sd_dhcp_client_ref(client)
+
 #define log_dhcp_client(client, fmt, ...) log_meta(LOG_DEBUG, __FILE__, __LINE__, __func__, "DHCP CLIENT (0x%x): " fmt, client->xid, ##__VA_ARGS__)