Add EAI_SYSTEM getaddrinfo error code.

This is useful to decide if value returned from getaddrinfo is actual
error or you should look at errno instead.

Author: tmiasko

src/unix/bsd/apple/mod.rs

@@ -621,6 +621,8 @@ pub const EOWNERDEAD: ::c_int = 105;
 pub const EQFULL: ::c_int = 106;
 pub const ELAST: ::c_int = 106;
 
+pub const EAI_SYSTEM: ::c_int = 11;
+
 pub const F_DUPFD: ::c_int = 0;
 pub const F_DUPFD_CLOEXEC: ::c_int = 67;
 pub const F_GETFD: ::c_int = 1;

src/unix/bsd/freebsdlike/mod.rs

@@ -467,6 +467,8 @@ pub const EMULTIHOP: ::c_int = 90;
 pub const ENOLINK: ::c_int = 91;
 pub const EPROTO: ::c_int = 92;
 
+pub const EAI_SYSTEM: ::c_int = 11;
+
 pub const F_DUPFD: ::c_int = 0;
 pub const F_GETFD: ::c_int = 1;
 pub const F_SETFD: ::c_int = 2;

src/unix/bsd/netbsdlike/netbsd.rs

@@ -547,6 +547,8 @@ pub const KERN_PROC_RUID: ::c_int = 6;
 pub const KERN_PROC_GID: ::c_int = 7;
 pub const KERN_PROC_RGID: ::c_int = 8;
 
+pub const EAI_SYSTEM: ::c_int = 11;
+
 extern {
     pub fn lutimes(file: *const ::c_char, times: *const ::timeval) -> ::c_int;
     pub fn getnameinfo(sa: *const ::sockaddr,

src/unix/bsd/netbsdlike/openbsdlike/mod.rs

@@ -172,6 +172,8 @@ pub const EIPSEC : ::c_int = 82;
 pub const ENOMEDIUM : ::c_int = 85;
 pub const EMEDIUMTYPE : ::c_int = 86;
 
+pub const EAI_SYSTEM: ::c_int = -11;
+
 pub const RUSAGE_THREAD: ::c_int = 1;
 
 pub const MAP_COPY : ::c_int = 0x0002;

src/unix/notbsd/android/mod.rs

@@ -580,6 +580,8 @@ pub const ICANON: ::tcflag_t = 0x00000002;
 pub const PENDIN: ::tcflag_t = 0x00004000;
 pub const NOFLSH: ::tcflag_t = 0x00000080;
 
+pub const EAI_SYSTEM: ::c_int = 11;
+
 f! {
     pub fn sigemptyset(set: *mut sigset_t) -> ::c_int {
         *set = 0;

src/unix/notbsd/linux/mod.rs

@@ -483,6 +483,8 @@ pub const SYNC_FILE_RANGE_WAIT_BEFORE: ::c_uint = 1;
 pub const SYNC_FILE_RANGE_WRITE: ::c_uint = 2;
 pub const SYNC_FILE_RANGE_WAIT_AFTER: ::c_uint = 4;
 
+pub const EAI_SYSTEM: ::c_int = -11;
+
 f! {
     pub fn CPU_ZERO(cpuset: &mut cpu_set_t) -> () {
         for slot in cpuset.bits.iter_mut() {

src/unix/solaris/mod.rs

@@ -651,6 +651,8 @@ pub const EMULTIHOP: ::c_int = 74;
 pub const ENOLINK: ::c_int = 67;
 pub const EPROTO: ::c_int = 71;
 
+pub const EAI_SYSTEM: ::cc_int = 11;
+
 pub const F_DUPFD: ::c_int = 0;
 pub const F_GETFD: ::c_int = 1;
 pub const F_SETFD: ::c_int = 2;