Reuse POSIX netinet_in constants for linux.

core/sys/posix/netinet_in.odin

@@ -44,26 +44,65 @@ when ODIN_OS == .Darwin || ODIN_OS == .FreeBSD || ODIN_OS == .NetBSD || ODIN_OS
 		},
 	}
 
-	sockaddr_in :: struct {
-		sin_len:    c.uint8_t,
-		sin_family: sa_family_t, /* [PSX] AF_INET (but a smaller size) */
-		sin_port:   in_port_t,   /* [PSX] port number */
-		sin_addr:   in_addr,     /* [PSX] IP address */
-		sin_zero:   [8]c.char,
-	}
-
-	sockaddr_in6 :: struct {
-		sin6_len:      c.uint8_t,
-		sin6_family:   sa_family_t, /* [PSX] AF_INET6 (but a smaller size) */
-		sin6_port:     in_port_t,   /* [PSX] port number */
-		sin6_flowinfo: c.uint32_t,  /* [PSX] IPv6 traffic class and flow information */
-		sin6_addr:     in6_addr,    /* [PSX] IPv6 address */
-		sin6_scope_id: c.uint32_t,  /* [PSX] set of interfaces for a scope */
-	}
+	when ODIN_OS == .Linux {
+		sockaddr_in :: struct {
+			sin_family: sa_family_t, /* [PSX] AF_INET (but a smaller size) */
+			sin_port:   in_port_t,   /* [PSX] port number */
+			sin_addr:   in_addr,     /* [PSX] IP address */
+			sin_zero: [size_of(sockaddr) -
+				u16 -
+				size_of(in_port_t) -
+				size_of(in_addr)]c.char,
+		}
+
+		sockaddr_in6 :: struct {
+			sin6_family:   sa_family_t, /* [PSX] AF_INET6 (but a smaller size) */
+			sin6_port:     in_port_t,   /* [PSX] port number */
+			sin6_flowinfo: u32be,  /* [PSX] IPv6 traffic class and flow information */
+			sin6_addr:     in6_addr,    /* [PSX] IPv6 address */
+			sin6_scope_id: c.uint32_t,  /* [PSX] set of interfaces for a scope */
+		}
+
+		IPV6_MULTICAST_IF   :: 17
+		IPV6_UNICAST_HOPS   :: 16
+		IPV6_MULTICAST_HOPS :: 18
+		IPV6_MULTICAST_LOOP :: 19
+		IPV6_JOIN_GROUP     :: 20
+		IPV6_LEAVE_GROUP    :: 21
+		IPV6_V6ONLY         :: 26
+
+	} else {
+
+		sockaddr_in :: struct {
+			sin_len:    c.uint8_t,
+			sin_family: sa_family_t, /* [PSX] AF_INET (but a smaller size) */
+			sin_port:   in_port_t,   /* [PSX] port number */
+			sin_addr:   in_addr,     /* [PSX] IP address */
+			sin_zero:   [8]c.char,
+		}
+
+		sockaddr_in6 :: struct {
+			sin6_len:      c.uint8_t,
+			sin6_family:   sa_family_t, /* [PSX] AF_INET6 (but a smaller size) */
+			sin6_port:     in_port_t,   /* [PSX] port number */
+			sin6_flowinfo: c.uint32_t,  /* [PSX] IPv6 traffic class and flow information */
+			sin6_addr:     in6_addr,    /* [PSX] IPv6 address */
+			sin6_scope_id: c.uint32_t,  /* [PSX] set of interfaces for a scope */
+		}
+
+		ipv6_mreq :: struct {
+			ipv6mr_multiaddr: in6_addr, /* [PSX] IPv6 multicast address */
+			ipv6mr_interface: c.uint,   /* [PSX] interface index */
+		}
+
+		IPV6_JOIN_GROUP     :: 12
+		IPV6_LEAVE_GROUP    :: 13
+		IPV6_MULTICAST_HOPS :: 10
+		IPV6_MULTICAST_IF   :: 9
+		IPV6_MULTICAST_LOOP :: 11
+		IPV6_UNICAST_HOPS   :: 4
+		IPV6_V6ONLY         :: 27
 
-	ipv6_mreq :: struct {
-		ipv6mr_multiaddr: in6_addr, /* [PSX] IPv6 multicast address */
-		ipv6mr_interface: c.uint,   /* [PSX] interface index */
 	}
 
 	IPPROTO_IP   :: 0
@@ -76,14 +115,6 @@ when ODIN_OS == .Darwin || ODIN_OS == .FreeBSD || ODIN_OS == .NetBSD || ODIN_OS
 	INADDR_ANY       :: 0x00000000
 	INADDR_BROADCAST :: 0xFFFFFFFF
 
-	IPV6_JOIN_GROUP     :: 12
-	IPV6_LEAVE_GROUP    :: 13
-	IPV6_MULTICAST_HOPS :: 10
-	IPV6_MULTICAST_IF   :: 9
-	IPV6_MULTICAST_LOOP :: 11
-	IPV6_UNICAST_HOPS   :: 4
-	IPV6_V6ONLY         :: 27
-
 	IN6_IS_ADDR_UNSPECIFIED :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
 		return a.s6_addr == 0
 	}
@@ -194,174 +225,6 @@ when ODIN_OS == .Darwin || ODIN_OS == .FreeBSD || ODIN_OS == .NetBSD || ODIN_OS
 		)
 	}
 
-} else when ODIN_OS == .Linux {
-
-	in_addr :: struct {
-		s_addr: in_addr_t, /* [PSX] big endian address */
-	}
-
-	in6_addr :: struct {
-		using _: struct #raw_union {
-			s6_addr:     [16]c.uint8_t, /* [PSX] big endian address */
-			__u6_addr16: [8]c.uint16_t,
-			__u6_addr32: [4]c.uint32_t,
-		},
-	}
-
-	sockaddr_in :: struct {
-		sin_family: sa_family_t, /* [PSX] AF_INET (but a smaller size) */
-		sin_port:   in_port_t,   /* [PSX] port number */
-		sin_addr:   in_addr,     /* [PSX] IP address */
-		sin_zero: [size_of(sockaddr) -
-			u16 -
-			size_of(in_port_t) -
-			size_of(in_addr)]c.char,
-	}
-
-	sockaddr_in6 :: struct {
-		sin6_family:   sa_family_t, /* [PSX] AF_INET6 (but a smaller size) */
-		sin6_port:     in_port_t,   /* [PSX] port number */
-		sin6_flowinfo: u32be,  /* [PSX] IPv6 traffic class and flow information */
-		sin6_addr:     in6_addr,    /* [PSX] IPv6 address */
-		sin6_scope_id: c.uint32_t,  /* [PSX] set of interfaces for a scope */
-	}
-
-	ipv6_mreq :: struct {
-		ipv6mr_multiaddr: in6_addr, /* [PSX] IPv6 multicast address */
-		ipv6mr_interface: c.int,   /* [PSX] interface index */
-	}
-
-	IPPROTO_IP   :: 0
-	IPPROTO_ICMP :: 1
-	IPPROTO_IPV6 :: 41
-	IPPROTO_RAW  :: 255
-	IPPROTO_TCP  :: 6
-	IPPROTO_UDP  :: 17
-
-	INADDR_ANY       :: 0x00000000
-	INADDR_BROADCAST :: 0xFFFFFFFF
-
-	IPV6_MULTICAST_IF   :: 17
-	IPV6_UNICAST_HOPS   :: 16
-	IPV6_MULTICAST_HOPS :: 18
-	IPV6_MULTICAST_LOOP :: 19
-	IPV6_JOIN_GROUP     :: 20
-	IPV6_LEAVE_GROUP    :: 21
-	IPV6_V6ONLY         :: 26
-
-	// TODO: (Isaac Andrade, 2024-09-02) Copied from the BSDs block above. Needs to be implemented for Linux.
-	// Get mentoring from a more senior C and Odin developer or leave this to one of them.
-
-	//IN6_IS_ADDR_UNSPECIFIED :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return a.s6_addr == 0
-	//}
-	//
-	//IN6_IS_ADDR_LOOPBACK :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	a := a
-	//	return (
-	//		(^c.uint32_t)(&a.s6_addr[0])^  == 0 &&
-	//		(^c.uint32_t)(&a.s6_addr[4])^  == 0 &&
-	//		(^c.uint32_t)(&a.s6_addr[8])^  == 0 &&
-	//		(^u32be)(&a.s6_addr[12])^ == 1 \
-	//	)
-	//}
-	//
-	//IN6_IS_ADDR_MULTICAST :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return a.s6_addr[0] == 0xff
-	//}
-	//
-	//IN6_IS_ADDR_LINKLOCAL :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return a.s6_addr[0] == 0xfe && a.s6_addr[1] & 0xc0 == 0x80
-	//}
-	//
-	//IN6_IS_ADDR_SITELOCAL :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return a.s6_addr[0] == 0xfe && a.s6_addr[1] & 0xc0 == 0xc0
-	//}
-	//
-	//IN6_IS_ADDR_V4MAPPED :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	a := a
-	//	return (
-	//		(^c.uint32_t)(&a.s6_addr[0])^ == 0 &&
-	//		(^c.uint32_t)(&a.s6_addr[4])^ == 0 &&
-	//		(^u32be)(&a.s6_addr[8])^ == 0x0000ffff \
-	//	)
-	//}
-	//
-	//IN6_IS_ADDR_V4COMPAT :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	a := a
-	//	return (
-	//		(^c.uint32_t)(&a.s6_addr[0])^  == 0 &&
-	//		(^c.uint32_t)(&a.s6_addr[4])^  == 0 &&
-	//		(^c.uint32_t)(&a.s6_addr[8])^  == 0 &&
-	//		(^c.uint32_t)(&a.s6_addr[12])^ != 0 &&
-	//		(^u32be)(&a.s6_addr[12])^ != 1 \
-	//	)
-	//}
-	//
-	//@(private)
-	//__IPV6_ADDR_SCOPE_NODELOCAL :: 0x01
-	//@(private)
-	//__IPV6_ADDR_SCOPE_LINKLOCAL :: 0x02
-	//@(private)
-	//__IPV6_ADDR_SCOPE_SITELOCAL :: 0x05
-	//@(private)
-	//__IPV6_ADDR_SCOPE_ORGLOCAL  :: 0x08
-	//@(private)
-	//__IPV6_ADDR_SCOPE_GLOBAL    :: 0x0e
-	//
-	//@(private)
-	//IPV6_ADDR_MC_FLAGS :: #force_inline proc "contextless" (a: in6_addr) -> c.uint8_t {
-	//	return a.s6_addr[1] & 0xf0
-	//}
-	//
-	//@(private)
-	//IPV6_ADDR_MC_FLAGS_TRANSIENT     :: 0x10
-	//@(private)
-	//IPV6_ADDR_MC_FLAGS_PREFIX        :: 0x20
-	//@(private)
-	//IPV6_ADDR_MC_FLAGS_UNICAST_BASED :: IPV6_ADDR_MC_FLAGS_TRANSIENT | IPV6_ADDR_MC_FLAGS_PREFIX
-	//
-	//@(private)
-	//__IPV6_ADDR_MC_SCOPE :: #force_inline proc "contextless" (a: in6_addr) -> c.uint8_t {
-	//	return a.s6_addr[1] & 0x0f
-	//}
-	//
-	//IN6_IS_ADDR_MC_NODELOCAL :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return (
-	//		IN6_IS_ADDR_MULTICAST(a) &&
-	//		(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_NODELOCAL) \
-	//	)
-	//}
-	//
-	//IN6_IS_ADDR_MC_LINKLOCAL :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return (
-	//		IN6_IS_ADDR_MULTICAST(a) &&
-	//		(IPV6_ADDR_MC_FLAGS(a) != IPV6_ADDR_MC_FLAGS_UNICAST_BASED) &&
-	//		(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_LINKLOCAL) \
-	//	)
-	//}
-	//
-	//IN6_IS_ADDR_MC_SITELOCAL :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return (
-	//		IN6_IS_ADDR_MULTICAST(a) &&
-	//		(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_SITELOCAL) \
-	//	)
-	//}
-	//
-	//IN6_IS_ADDR_MC_ORGLOCAL :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return (
-	//		IN6_IS_ADDR_MULTICAST(a) &&
-	//		(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_ORGLOCAL) \
-	//	)
-	//}
-	//
-	//IN6_IS_ADDR_MC_GLOBAL :: #force_inline proc "contextless" (a: in6_addr) -> b32 {
-	//	return (
-	//		IN6_IS_ADDR_MULTICAST(a) &&
-	//		(__IPV6_ADDR_MC_SCOPE(a) == __IPV6_ADDR_SCOPE_GLOBAL) \
-	//	)
-	//}
-
 } else {
 	#panic("posix is unimplemented for the current target")
 }