Add a "fork" of musl as //fusl.

fusl/include/netinet/in.h

+#ifndef _NETINET_IN_H
+#define _NETINET_IN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <features.h>
+#include <inttypes.h>
+#include <sys/socket.h>
+
+typedef uint16_t in_port_t;
+typedef uint32_t in_addr_t;
+struct in_addr { in_addr_t s_addr; };
+
+struct sockaddr_in
+{
+        sa_family_t sin_family;
+        in_port_t sin_port;
+        struct in_addr sin_addr;
+        uint8_t sin_zero[8];
+};
+
+struct in6_addr
+{
+        union {
+                uint8_t __s6_addr[16];
+                uint16_t __s6_addr16[8];
+                uint32_t __s6_addr32[4];
+        } __in6_union;
+};
+#define s6_addr __in6_union.__s6_addr
+#define s6_addr16 __in6_union.__s6_addr16
+#define s6_addr32 __in6_union.__s6_addr32
+
+struct sockaddr_in6
+{
+        sa_family_t     sin6_family;
+        in_port_t       sin6_port;
+        uint32_t        sin6_flowinfo;
+        struct in6_addr sin6_addr;
+        uint32_t        sin6_scope_id;
+};
+
+struct ipv6_mreq
+{
+        struct in6_addr ipv6mr_multiaddr;
+        unsigned        ipv6mr_interface;
+};
+
+#define INADDR_ANY        ((in_addr_t) 0x00000000)
+#define INADDR_BROADCAST  ((in_addr_t) 0xffffffff)
+#define INADDR_NONE       ((in_addr_t) 0xffffffff)
+#define INADDR_LOOPBACK   ((in_addr_t) 0x7f000001)
+
+#define INADDR_UNSPEC_GROUP     ((in_addr_t) 0xe0000000)
+#define INADDR_ALLHOSTS_GROUP   ((in_addr_t) 0xe0000001)
+#define INADDR_ALLRTRS_GROUP    ((in_addr_t) 0xe0000002)
+#define INADDR_MAX_LOCAL_GROUP  ((in_addr_t) 0xe00000ff)
+
+#define IN6ADDR_ANY_INIT      { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
+#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
+
+extern const struct in6_addr in6addr_any, in6addr_loopback;
+
+#undef INET_ADDRSTRLEN
+#undef INET6_ADDRSTRLEN
+#define INET_ADDRSTRLEN  16
+#define INET6_ADDRSTRLEN 46
+
+uint32_t htonl(uint32_t);
+uint16_t htons(uint16_t);
+uint32_t ntohl(uint32_t);
+uint16_t ntohs(uint16_t);
+
+#define IPPROTO_IP       0
+#define IPPROTO_HOPOPTS  0
+#define IPPROTO_ICMP     1
+#define IPPROTO_IGMP     2
+#define IPPROTO_IPIP     4
+#define IPPROTO_TCP      6
+#define IPPROTO_EGP      8
+#define IPPROTO_PUP      12
+#define IPPROTO_UDP      17
+#define IPPROTO_IDP      22
+#define IPPROTO_TP       29
+#define IPPROTO_DCCP     33
+#define IPPROTO_IPV6     41
+#define IPPROTO_ROUTING  43
+#define IPPROTO_FRAGMENT 44
+#define IPPROTO_RSVP     46
+#define IPPROTO_GRE      47
+#define IPPROTO_ESP      50
+#define IPPROTO_AH       51
+#define IPPROTO_ICMPV6   58
+#define IPPROTO_NONE     59
+#define IPPROTO_DSTOPTS  60
+#define IPPROTO_MTP      92
+#define IPPROTO_BEETPH   94
+#define IPPROTO_ENCAP    98
+#define IPPROTO_PIM      103
+#define IPPROTO_COMP     108
+#define IPPROTO_SCTP     132
+#define IPPROTO_MH       135
+#define IPPROTO_UDPLITE  136
+#define IPPROTO_RAW      255
+#define IPPROTO_MAX      256
+
+#define IN6_IS_ADDR_UNSPECIFIED(a) \
+        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+         ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == 0)
+
+#define IN6_IS_ADDR_LOOPBACK(a) \
+        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+         ((uint32_t *) (a))[2] == 0 && \
+         ((uint8_t *) (a))[12] == 0 && ((uint8_t *) (a))[13] == 0 && \
+         ((uint8_t *) (a))[14] == 0 && ((uint8_t *) (a))[15] == 1 )
+
+#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
+
+#define IN6_IS_ADDR_LINKLOCAL(a) \
+        ((((uint8_t *) (a))[0]) == 0xfe && (((uint8_t *) (a))[1] & 0xc0) == 0x80)
+
+#define IN6_IS_ADDR_SITELOCAL(a) \
+        ((((uint8_t *) (a))[0]) == 0xfe && (((uint8_t *) (a))[1] & 0xc0) == 0xc0)
+
+#define IN6_IS_ADDR_V4MAPPED(a) \
+        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+         ((uint8_t *) (a))[8] == 0 && ((uint8_t *) (a))[9] == 0 && \
+         ((uint8_t *) (a))[10] == 0xff && ((uint8_t *) (a))[11] == 0xff)
+
+#define IN6_IS_ADDR_V4COMPAT(a) \
+        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+         ((uint32_t *) (a))[2] == 0 && ((uint8_t *) (a))[15] > 1)
+
+#define IN6_IS_ADDR_MC_NODELOCAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x1))
+
+#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x2))
+
+#define IN6_IS_ADDR_MC_SITELOCAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x5))
+
+#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x8))
+
+#define IN6_IS_ADDR_MC_GLOBAL(a) \
+        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0xe))
+
+#define __ARE_4_EQUAL(a,b) \
+        (!( (0[a]-0[b]) | (1[a]-1[b]) | (2[a]-2[b]) | (3[a]-3[b]) ))
+#define IN6_ARE_ADDR_EQUAL(a,b) \
+        __ARE_4_EQUAL((const uint32_t *)(a), (const uint32_t *)(b))
+
+#define IN_CLASSA(a)            ((((in_addr_t)(a)) & 0x80000000) == 0)
+#define IN_CLASSA_NET           0xff000000
+#define IN_CLASSA_NSHIFT        24
+#define IN_CLASSA_HOST          (0xffffffff & ~IN_CLASSA_NET)
+#define IN_CLASSA_MAX           128
+#define IN_CLASSB(a)            ((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
+#define IN_CLASSB_NET           0xffff0000
+#define IN_CLASSB_NSHIFT        16
+#define IN_CLASSB_HOST          (0xffffffff & ~IN_CLASSB_NET)
+#define IN_CLASSB_MAX           65536
+#define IN_CLASSC(a)            ((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
+#define IN_CLASSC_NET           0xffffff00
+#define IN_CLASSC_NSHIFT        8
+#define IN_CLASSC_HOST          (0xffffffff & ~IN_CLASSC_NET)
+#define IN_CLASSD(a)            ((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
+#define IN_MULTICAST(a)         IN_CLASSD(a)
+#define IN_EXPERIMENTAL(a)      ((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
+#define IN_BADCLASS(a)          ((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
+
+#define IN_LOOPBACKNET 127
+
+
+#define IP_TOS             1
+#define IP_TTL             2
+#define IP_HDRINCL         3
+#define IP_OPTIONS         4
+#define IP_ROUTER_ALERT    5
+#define IP_RECVOPTS        6
+#define IP_RETOPTS         7
+#define IP_PKTINFO         8
+#define IP_PKTOPTIONS      9
+#define IP_PMTUDISC        10
+#define IP_MTU_DISCOVER    10
+#define IP_RECVERR         11
+#define IP_RECVTTL         12
+#define IP_RECVTOS         13
+#define IP_MTU             14
+#define IP_FREEBIND        15
+#define IP_IPSEC_POLICY    16
+#define IP_XFRM_POLICY     17
+#define IP_PASSSEC         18
+#define IP_TRANSPARENT     19
+#define IP_ORIGDSTADDR     20
+#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
+#define IP_MINTTL          21
+#define IP_NODEFRAG        22
+#define IP_CHECKSUM        23
+#define IP_MULTICAST_IF    32
+#define IP_MULTICAST_TTL   33
+#define IP_MULTICAST_LOOP  34
+#define IP_ADD_MEMBERSHIP  35
+#define IP_DROP_MEMBERSHIP 36
+#define IP_UNBLOCK_SOURCE  37
+#define IP_BLOCK_SOURCE    38
+#define IP_ADD_SOURCE_MEMBERSHIP  39
+#define IP_DROP_SOURCE_MEMBERSHIP 40
+#define IP_MSFILTER        41
+#define IP_MULTICAST_ALL   49
+#define IP_UNICAST_IF      50
+
+#define IP_RECVRETOPTS IP_RETOPTS
+
+#define IP_PMTUDISC_DONT   0
+#define IP_PMTUDISC_WANT   1
+#define IP_PMTUDISC_DO     2
+#define IP_PMTUDISC_PROBE  3
+#define IP_PMTUDISC_INTERFACE 4
+#define IP_PMTUDISC_OMIT   5
+
+#define IP_DEFAULT_MULTICAST_TTL        1
+#define IP_DEFAULT_MULTICAST_LOOP       1
+#define IP_MAX_MEMBERSHIPS              20
+
+struct ip_opts
+{
+        struct in_addr ip_dst;
+        char ip_opts[40];
+};
+
+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+
+#define MCAST_JOIN_GROUP   42
+#define MCAST_BLOCK_SOURCE 43
+#define MCAST_UNBLOCK_SOURCE      44
+#define MCAST_LEAVE_GROUP  45
+#define MCAST_JOIN_SOURCE_GROUP   46
+#define MCAST_LEAVE_SOURCE_GROUP  47
+#define MCAST_MSFILTER     48
+
+#define MCAST_EXCLUDE 0
+#define MCAST_INCLUDE 1
+
+struct ip_mreq
+{
+        struct in_addr imr_multiaddr;
+        struct in_addr imr_interface;
+};
+
+struct ip_mreqn
+{
+        struct in_addr imr_multiaddr;
+        struct in_addr imr_address;
+        int imr_ifindex;
+};
+
+struct ip_mreq_source {
+        struct in_addr imr_multiaddr;
+        struct in_addr imr_interface;
+        struct in_addr imr_sourceaddr;
+};
+
+struct ip_msfilter {
+        struct in_addr imsf_multiaddr;
+        struct in_addr imsf_interface;
+        uint32_t imsf_fmode;
+        uint32_t imsf_numsrc;
+        struct in_addr imsf_slist[1];
+};
+#define IP_MSFILTER_SIZE(numsrc) \
+        (sizeof(struct ip_msfilter) - sizeof(struct in_addr) \
+        + (numsrc) * sizeof(struct in_addr))
+
+struct group_req {
+        uint32_t gr_interface;
+        struct sockaddr_storage gr_group;
+};
+
+struct group_source_req {
+        uint32_t gsr_interface;
+        struct sockaddr_storage gsr_group;
+        struct sockaddr_storage gsr_source;
+};
+
+struct group_filter {
+        uint32_t gf_interface;
+        struct sockaddr_storage gf_group;
+        uint32_t gf_fmode;
+        uint32_t gf_numsrc;
+        struct sockaddr_storage gf_slist[1];
+};
+#define GROUP_FILTER_SIZE(numsrc) \
+        (sizeof(struct group_filter) - sizeof(struct sockaddr_storage) \
+        + (numsrc) * sizeof(struct sockaddr_storage))
+
+struct in_pktinfo
+{
+        int ipi_ifindex;
+        struct in_addr ipi_spec_dst;
+        struct in_addr ipi_addr;
+};
+
+struct in6_pktinfo
+{
+        struct in6_addr ipi6_addr;
+        unsigned ipi6_ifindex;
+};
+
+struct ip6_mtuinfo
+{
+        struct sockaddr_in6 ip6m_addr;
+        uint32_t ip6m_mtu;
+};
+#endif
+
+#define IPV6_ADDRFORM           1
+#define IPV6_2292PKTINFO        2
+#define IPV6_2292HOPOPTS        3
+#define IPV6_2292DSTOPTS        4
+#define IPV6_2292RTHDR          5
+#define IPV6_2292PKTOPTIONS     6
+#define IPV6_CHECKSUM           7
+#define IPV6_2292HOPLIMIT       8
+#define IPV6_NEXTHOP            9
+#define IPV6_AUTHHDR            10
+#define IPV6_UNICAST_HOPS       16
+#define IPV6_MULTICAST_IF       17
+#define IPV6_MULTICAST_HOPS     18
+#define IPV6_MULTICAST_LOOP     19
+#define IPV6_JOIN_GROUP         20
+#define IPV6_LEAVE_GROUP        21
+#define IPV6_ROUTER_ALERT       22
+#define IPV6_MTU_DISCOVER       23
+#define IPV6_MTU                24
+#define IPV6_RECVERR            25
+#define IPV6_V6ONLY             26
+#define IPV6_JOIN_ANYCAST       27
+#define IPV6_LEAVE_ANYCAST      28
+#define IPV6_IPSEC_POLICY       34
+#define IPV6_XFRM_POLICY        35
+
+#define IPV6_RECVPKTINFO        49
+#define IPV6_PKTINFO            50
+#define IPV6_RECVHOPLIMIT       51
+#define IPV6_HOPLIMIT           52
+#define IPV6_RECVHOPOPTS        53
+#define IPV6_HOPOPTS            54
+#define IPV6_RTHDRDSTOPTS       55
+#define IPV6_RECVRTHDR          56
+#define IPV6_RTHDR              57
+#define IPV6_RECVDSTOPTS        58
+#define IPV6_DSTOPTS            59
+#define IPV6_RECVPATHMTU        60
+#define IPV6_PATHMTU            61
+#define IPV6_DONTFRAG           62
+#define IPV6_RECVTCLASS         66
+#define IPV6_TCLASS             67
+#define IPV6_AUTOFLOWLABEL      70
+#define IPV6_ADDR_PREFERENCES   72
+#define IPV6_MINHOPCOUNT        73
+#define IPV6_ORIGDSTADDR        74
+#define IPV6_RECVORIGDSTADDR    IPV6_ORIGDSTADDR
+#define IPV6_TRANSPARENT        75
+#define IPV6_UNICAST_IF         76
+
+#define IPV6_ADD_MEMBERSHIP     IPV6_JOIN_GROUP
+#define IPV6_DROP_MEMBERSHIP    IPV6_LEAVE_GROUP
+#define IPV6_RXHOPOPTS          IPV6_HOPOPTS
+#define IPV6_RXDSTOPTS          IPV6_DSTOPTS
+
+#define IPV6_PMTUDISC_DONT      0
+#define IPV6_PMTUDISC_WANT      1
+#define IPV6_PMTUDISC_DO        2
+#define IPV6_PMTUDISC_PROBE     3
+#define IPV6_PMTUDISC_INTERFACE 4
+#define IPV6_PMTUDISC_OMIT      5
+
+#define IPV6_PREFER_SRC_TMP            0x0001
+#define IPV6_PREFER_SRC_PUBLIC         0x0002
+#define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100
+#define IPV6_PREFER_SRC_COA            0x0004
+#define IPV6_PREFER_SRC_HOME           0x0400
+#define IPV6_PREFER_SRC_CGA            0x0008
+#define IPV6_PREFER_SRC_NONCGA         0x0800
+
+#define IPV6_RTHDR_LOOSE        0
+#define IPV6_RTHDR_STRICT       1
+
+#define IPV6_RTHDR_TYPE_0       0
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif