odhcpd: Replace strerror(errno) with %m format

Saves a few bytes.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

8 files changed, 15 insertions, 21 deletions

diff --git a/src/config.c b/src/config.c
index 409b3b8..c3e2437 100644
--- a/src/config.c
+++ b/src/config.c
@@ -186,7 +186,7 @@ static int mkdir_p(char *dir, mode_t mask)
 		return 0;
 
 	if (ret)
-		syslog(LOG_ERR, "mkdir(%s, %d) failed: %s\n", dir, mask, strerror(errno));
+		syslog(LOG_ERR, "mkdir(%s, %d) failed: %m\n", dir, mask);
 
 	return ret;
 }
diff --git a/src/dhcpv4.c b/src/dhcpv4.c
index c367507..db5f138 100644
--- a/src/dhcpv4.c
+++ b/src/dhcpv4.c
@@ -86,8 +86,7 @@ int dhcpv4_setup_interface(struct interface *iface, bool enable)
 
 		int sock = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, IPPROTO_UDP);
 		if (sock < 0) {
-			syslog(LOG_ERR, "Failed to create DHCPv4 server socket: %s",
-					strerror(errno));
+			syslog(LOG_ERR, "Failed to create DHCPv4 server socket: %m");
 			return -1;
 		}
 
@@ -110,8 +109,7 @@ int dhcpv4_setup_interface(struct interface *iface, bool enable)
 					{INADDR_ANY}, {0}};
 
 		if (bind(sock, (struct sockaddr*)&bind_addr, sizeof(bind_addr))) {
-			syslog(LOG_ERR, "Failed to open DHCPv4 server socket: %s",
-					strerror(errno));
+			syslog(LOG_ERR, "Failed to open DHCPv4 server socket: %m");
 			return -1;
 		}
 
diff --git a/src/dhcpv6.c b/src/dhcpv6.c
index 462a85e..e092c10 100644
--- a/src/dhcpv6.c
+++ b/src/dhcpv6.c
@@ -53,8 +53,7 @@ int dhcpv6_setup_interface(struct interface *iface, bool enable)
 	if (enable && iface->dhcpv6) {
 		int sock = socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, IPPROTO_UDP);
 		if (sock < 0) {
-			syslog(LOG_ERR, "Failed to create DHCPv6 server socket: %s",
-					strerror(errno));
+			syslog(LOG_ERR, "Failed to create DHCPv6 server socket: %m");
 			return -1;
 		}
 
@@ -76,8 +75,7 @@ int dhcpv6_setup_interface(struct interface *iface, bool enable)
 					0, IN6ADDR_ANY_INIT, 0};
 
 		if (bind(sock, (struct sockaddr*)&bind_addr, sizeof(bind_addr))) {
-			syslog(LOG_ERR, "Failed to open DHCPv6 server socket: %s",
-					strerror(errno));
+			syslog(LOG_ERR, "Failed to open DHCPv6 server socket: %m");
 			return -1;
 		}
 
diff --git a/src/ndp.c b/src/ndp.c
index d589066..72fd3bc 100644
--- a/src/ndp.c
+++ b/src/ndp.c
@@ -62,7 +62,7 @@ int ndp_init(void)
 	// Open ICMPv6 socket
 	ping_socket = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
 	if (ping_socket < 0) {
-		syslog(LOG_ERR, "Unable to open raw socket: %s", strerror(errno));
+		syslog(LOG_ERR, "Unable to open raw socket: %m");
 			return -1;
 	}
 
@@ -113,8 +113,7 @@ int ndp_setup_interface(struct interface *iface, bool enable)
 
 		int sock = socket(AF_PACKET, SOCK_DGRAM | SOCK_CLOEXEC, htons(ETH_P_IPV6));
 		if (sock < 0) {
-			syslog(LOG_ERR, "Unable to open packet socket: %s",
-					strerror(errno));
+			syslog(LOG_ERR, "Unable to open packet socket: %m");
 			ret = -1;
 			goto out;
 		}
@@ -126,7 +125,7 @@ int ndp_setup_interface(struct interface *iface, bool enable)
 
 		if (setsockopt(sock, SOL_SOCKET, SO_ATTACH_FILTER,
 				&bpf_prog, sizeof(bpf_prog))) {
-			syslog(LOG_ERR, "Failed to set BPF: %s", strerror(errno));
+			syslog(LOG_ERR, "Failed to set BPF: %m");
 			ret = -1;
 			goto out;
 		}
diff --git a/src/netlink.c b/src/netlink.c
index ca9376e..e9fd04a 100644
--- a/src/netlink.c
+++ b/src/netlink.c
@@ -58,13 +58,13 @@ int netlink_init(void)
 {
 	rtnl_socket = create_socket(NETLINK_ROUTE);
 	if (!rtnl_socket) {
-		syslog(LOG_ERR, "Unable to open nl socket: %s", strerror(errno));
+		syslog(LOG_ERR, "Unable to open nl socket: %m");
 		goto err;
 	}
 
 	rtnl_event.sock = create_socket(NETLINK_ROUTE);
 	if (!rtnl_event.sock) {
-		syslog(LOG_ERR, "Unable to open nl event socket: %s", strerror(errno));
+		syslog(LOG_ERR, "Unable to open nl event socket: %m");
 		goto err;
 	}
 
diff --git a/src/odhcpd.c b/src/odhcpd.c
index 58c4338..71b803d 100644
--- a/src/odhcpd.c
+++ b/src/odhcpd.c
@@ -187,8 +187,8 @@ ssize_t odhcpd_send(int socket, struct sockaddr_in6 *dest,
 
 	ssize_t sent = sendmsg(socket, &msg, MSG_DONTWAIT);
 	if (sent < 0)
-		syslog(LOG_NOTICE, "Failed to send to %s%%%s (%s)",
-				ipbuf, iface->ifname, strerror(errno));
+		syslog(LOG_NOTICE, "Failed to send to %s%%%s (%m)",
+				ipbuf, iface->ifname);
 	else
 		syslog(LOG_DEBUG, "Sent %li bytes to %s%%%s",
 				(long)sent, ipbuf, iface->ifname);
diff --git a/src/router.c b/src/router.c
index 7bc94ed..e62282b 100644
--- a/src/router.c
+++ b/src/router.c
@@ -48,7 +48,7 @@ int router_init(void)
 	// Open ICMPv6 socket
 	int sock = socket(AF_INET6, SOCK_RAW | SOCK_CLOEXEC, IPPROTO_ICMPV6);
 	if (sock < 0 && errno != EAFNOSUPPORT) {
-		syslog(LOG_ERR, "Failed to open RAW-socket: %s", strerror(errno));
+		syslog(LOG_ERR, "Failed to open RAW-socket: %m");
 		return -1;
 	}
 
@@ -82,8 +82,7 @@ int router_init(void)
 	odhcpd_register(&router_event);
 
 	if (!(fp_route = fopen("/proc/net/ipv6_route", "r")))
-		syslog(LOG_ERR, "Failed to open routing table: %s",
-				strerror(errno));
+		syslog(LOG_ERR, "Failed to open routing table: %m");
 
 	netlink_add_netevent_handler(&router_netevent_handler);
 
diff --git a/src/ubus.c b/src/ubus.c
index 19b14be..6af5911 100644
--- a/src/ubus.c
+++ b/src/ubus.c
@@ -412,7 +412,7 @@ bool ubus_has_prefix(const char *name, const char *ifname)
 int ubus_init(void)
 {
 	if (!(ubus = ubus_connect(NULL))) {
-		syslog(LOG_ERR, "Unable to connect to ubus: %s", strerror(errno));
+		syslog(LOG_ERR, "Unable to connect to ubus: %m");
 		return -1;
 	}