Add missing networking support for Solaris

(backport <#3717>)
(cherry picked from commit 7d2eb94)

Author: psumbera

libc-test/semver/solarish.txt

@@ -1 +1,14 @@
+IPV6_DONTFRAG
+IPV6_PKTINFO
+IPV6_RECVTCLASS
+IPV6_TCLASS
+IP_DONTFRAG
+IP_PKTINFO
+IP_TOS
+IP_TTL
 PIPE_BUF
+bind
+in6_pktinfo
+in_pktinfo
+recvmsg
+sendmsg

src/unix/mod.rs

@@ -595,7 +595,10 @@ extern "C" {
         target_vendor = "nintendo"
     )))]
     #[cfg_attr(target_os = "netbsd", link_name = "__socket30")]
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_socket")]
+    #[cfg_attr(
+        any(target_os = "illumos", target_os = "solaris"),
+        link_name = "__xnet_socket"
+    )]
     #[cfg_attr(target_os = "espidf", link_name = "lwip_socket")]
     pub fn socket(domain: ::c_int, ty: ::c_int, protocol: ::c_int) -> ::c_int;
     #[cfg(not(all(
@@ -607,7 +610,10 @@ extern "C" {
         all(target_os = "macos", target_arch = "x86"),
         link_name = "connect$UNIX2003"
     )]
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_connect")]
+    #[cfg_attr(
+        any(target_os = "illumos", target_os = "solaris"),
+        link_name = "__xnet_connect"
+    )]
     #[cfg_attr(target_os = "espidf", link_name = "lwip_connect")]
     pub fn connect(socket: ::c_int, address: *const sockaddr, len: socklen_t) -> ::c_int;
     #[cfg_attr(
@@ -669,7 +675,10 @@ extern "C" {
         all(target_os = "macos", target_arch = "x86"),
         link_name = "socketpair$UNIX2003"
     )]
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_socketpair")]
+    #[cfg_attr(
+        any(target_os = "illumos", target_os = "solaris"),
+        link_name = "__xnet_socketpair"
+    )]
     pub fn socketpair(
         domain: ::c_int,
         type_: ::c_int,
@@ -685,7 +694,10 @@ extern "C" {
         all(target_os = "macos", target_arch = "x86"),
         link_name = "sendto$UNIX2003"
     )]
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_sendto")]
+    #[cfg_attr(
+        any(target_os = "illumos", target_os = "solaris"),
+        link_name = "__xnet_sendto"
+    )]
     #[cfg_attr(target_os = "espidf", link_name = "lwip_sendto")]
     pub fn sendto(
         socket: ::c_int,
@@ -1164,7 +1176,10 @@ extern "C" {
     pub fn pthread_rwlockattr_init(attr: *mut pthread_rwlockattr_t) -> ::c_int;
     pub fn pthread_rwlockattr_destroy(attr: *mut pthread_rwlockattr_t) -> ::c_int;
 
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_getsockopt")]
+    #[cfg_attr(
+        any(target_os = "illumos", target_os = "solaris"),
+        link_name = "__xnet_getsockopt"
+    )]
     #[cfg_attr(target_os = "espidf", link_name = "lwip_getsockopt")]
     pub fn getsockopt(
         sockfd: ::c_int,
@@ -1187,7 +1202,10 @@ extern "C" {
         target_arch = "powerpc",
         target_vendor = "nintendo"
     )))]
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_getaddrinfo")]
+    #[cfg_attr(
+        any(target_os = "illumos", target_os = "solaris"),
+        link_name = "__xnet_getaddrinfo"
+    )]
     #[cfg_attr(target_os = "espidf", link_name = "lwip_getaddrinfo")]
     pub fn getaddrinfo(
         node: *const c_char,

src/unix/solarish/mod.rs

@@ -120,6 +120,17 @@ s! {
         pub __sin6_src_id: u32
     }
 
+    pub struct in_pktinfo {
+        pub ipi_ifindex: ::c_uint,
+        pub ipi_spec_dst: ::in_addr,
+        pub ipi_addr: ::in_addr,
+    }
+
+    pub struct in6_pktinfo {
+        pub ipi6_addr: ::in6_addr,
+        pub ipi6_ifindex: ::c_uint,
+    }
+
     pub struct passwd {
         pub pw_name: *mut ::c_char,
         pub pw_passwd: *mut ::c_char,
@@ -1238,14 +1249,20 @@ pub const CLD_STOPPED: ::c_int = 5;
 pub const CLD_CONTINUED: ::c_int = 6;
 
 pub const IP_RECVDSTADDR: ::c_int = 0x7;
+pub const IP_PKTINFO: ::c_int = 0x1a;
+pub const IP_DONTFRAG: ::c_int = 0x1b;
 pub const IP_SEC_OPT: ::c_int = 0x22;
 
 pub const IPV6_UNICAST_HOPS: ::c_int = 0x5;
 pub const IPV6_MULTICAST_IF: ::c_int = 0x6;
 pub const IPV6_MULTICAST_HOPS: ::c_int = 0x7;
 pub const IPV6_MULTICAST_LOOP: ::c_int = 0x8;
+pub const IPV6_PKTINFO: ::c_int = 0xb;
 pub const IPV6_RECVPKTINFO: ::c_int = 0x12;
+pub const IPV6_RECVTCLASS: ::c_int = 0x19;
+pub const IPV6_DONTFRAG: ::c_int = 0x21;
 pub const IPV6_SEC_OPT: ::c_int = 0x22;
+pub const IPV6_TCLASS: ::c_int = 0x26;
 pub const IPV6_V6ONLY: ::c_int = 0x27;
 
 cfg_if! {
@@ -1775,8 +1792,9 @@ pub const SOCK_SEQPACKET: ::c_int = 6;
 pub const IP_MULTICAST_IF: ::c_int = 16;
 pub const IP_MULTICAST_TTL: ::c_int = 17;
 pub const IP_MULTICAST_LOOP: ::c_int = 18;
-pub const IP_TTL: ::c_int = 4;
 pub const IP_HDRINCL: ::c_int = 2;
+pub const IP_TOS: ::c_int = 3;
+pub const IP_TTL: ::c_int = 4;
 pub const IP_ADD_MEMBERSHIP: ::c_int = 19;
 pub const IP_DROP_MEMBERSHIP: ::c_int = 20;
 pub const IPV6_JOIN_GROUP: ::c_int = 9;
@@ -2869,15 +2887,15 @@ extern "C" {
     ) -> ::c_int;
     pub fn nl_langinfo(item: ::nl_item) -> *mut ::c_char;
 
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_bind")]
+    #[link_name = "__xnet_bind"]
     pub fn bind(socket: ::c_int, address: *const ::sockaddr, address_len: ::socklen_t) -> ::c_int;
 
     pub fn writev(fd: ::c_int, iov: *const ::iovec, iovcnt: ::c_int) -> ::ssize_t;
     pub fn readv(fd: ::c_int, iov: *const ::iovec, iovcnt: ::c_int) -> ::ssize_t;
 
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_sendmsg")]
+    #[link_name = "__xnet_sendmsg"]
     pub fn sendmsg(fd: ::c_int, msg: *const ::msghdr, flags: ::c_int) -> ::ssize_t;
-    #[cfg_attr(target_os = "illumos", link_name = "__xnet_recvmsg")]
+    #[link_name = "__xnet_recvmsg"]
     pub fn recvmsg(fd: ::c_int, msg: *mut ::msghdr, flags: ::c_int) -> ::ssize_t;
     pub fn accept4(
         fd: ::c_int,