Build fixes for Solaris 9.

See RT ticket #17444 for more.

RELNOTES

@@ -108,6 +108,8 @@ suggested fixes to <dhcp-users@isc.org>.
   initialization state may have been used to signal the relay agent
   information options sub-option code for the 'END' of the option space.
 
+- Fixes to allow code to compile and run on Solaris 9.
+
 			Changes since 4.0.0b3
 
 - The reverse dns name for PTR updates on IPv6 addresses has been fixed to

common/socket.c

@@ -410,6 +410,56 @@ ssize_t send_packet (interface, packet, raw, len, from, to, hto)
 
 #endif /* USE_SOCKET_SEND || USE_SOCKET_FALLBACK */
 
+#ifdef DHCPv6
+/*
+ * Solaris 9 is missing the CMSG_LEN and CMSG_SPACE macros, so we will 
+ * synthesize them (based on the BIND 9 technique).
+ */
+
+#ifndef CMSG_LEN
+static size_t CMSG_LEN(size_t len) {
+	size_t hdrlen;
+	/*
+	 * Cast NULL so that any pointer arithmetic performed by CMSG_DATA
+	 * is correct.
+	 */
+	hdrlen = (size_t)CMSG_DATA(((struct cmsghdr *)NULL));
+	return hdrlen + len;
+}
+#endif /* !CMSG_LEN */
+
+#ifndef CMSG_SPACE
+static size_t CMSG_SPACE(size_t len) {
+	struct msghdr msg;
+	struct cmsghdr *cmsgp;
+
+	/*
+	 * XXX: The buffer length is an ad-hoc value, but should be enough
+	 * in a practical sense.
+	 */
+	union {
+		struct cmsghdr cmsg_sizer;
+		u_int8_t pktinfo_sizer[sizeof(struct cmsghdr) + 1024];
+	} dummybuf;
+
+	memset(&msg, 0, sizeof(msg));
+	msg.msg_control = &dummybuf;
+	msg.msg_controllen = sizeof(dummybuf);
+
+	cmsgp = (struct cmsghdr *)&dummybuf;
+	cmsgp->cmsg_len = CMSG_LEN(len);
+
+	cmsgp = CMSG_NXTHDR(&msg, cmsgp);
+	if (cmsgp != NULL) {
+		return (char *)cmsgp - (char *)msg.msg_control;
+	} else {
+		return 0;
+	}
+}
+#endif /* !CMSG_SPACE */
+
+#endif /* DHCPv6 */
+
 #ifdef DHCPv6
 /* 
  * For both send_packet6() and receive_packet6() we need to use the 

configure.ac

@@ -180,6 +180,7 @@ fi
 AC_MSG_CHECKING([for struct lifnum])
 AC_TRY_COMPILE(
 [ #include <sys/types.h>
+  #include <sys/socket.h>
   #include <net/if.h>
 ],
 [ struct lifnum a;
@@ -214,7 +215,7 @@ AC_TRY_LINK(
 	[AC_MSG_RESULT(no)])
 
 # Look for optional headers.
-AC_CHECK_HEADERS(net/if_dl.h net/if6.h regex.h)
+AC_CHECK_HEADERS(sys/socket.h net/if_dl.h net/if6.h regex.h)
 
 # find an MD5 library
 AC_SEARCH_LIBS(MD5_Init, [crypto])

omapip/inet_addr.c

@@ -78,14 +78,14 @@ inet_aton(cp, addr)
 				base = 8;
 		}
 		while ((c = *cp) != '\0') {
-			if (isascii(c) && isdigit(c)) {
+			if (isascii(c) && isdigit((int)c)) {
 				val = (val * base) + (c - '0');
 				cp++;
 				continue;
 			}
-			if (base == 16 && isascii(c) && isxdigit(c)) {
+			if (base == 16 && isascii(c) && isxdigit((int)c)) {
 				val = (val << 4) + 
-					(c + 10 - (islower(c) ? 'a' : 'A'));
+				      (c + 10 - (islower((int)c) ? 'a' : 'A'));
 				cp++;
 				continue;
 			}
@@ -107,7 +107,7 @@ inet_aton(cp, addr)
 	/*
 	 * Check for trailing characters.
 	 */
-	if (*cp && (!isascii(*cp) || !isspace(*cp)))
+	if (*cp && (!isascii(*cp) || !isspace((int)*cp)))
 		return (0);
 	/*
 	 * Concoct the address according to