Fixes tests on Solaris

(backport <rust-lang#3864>)
(cherry picked from commit ec3c338)

Author: psumbera

libc-test/build.rs

@@ -886,8 +886,6 @@ fn test_solarish(target: &str) {
         "stdlib.h",
         "string.h",
         "sys/auxv.h",
-        "sys/epoll.h",
-        "sys/eventfd.h",
         "sys/file.h",
         "sys/filio.h",
         "sys/ioctl.h",
@@ -927,6 +925,19 @@ fn test_solarish(target: &str) {
         "wchar.h",
     }
 
+    if is_illumos {
+        headers! { cfg:
+            "sys/epoll.h",
+            "sys/eventfd.h",
+        }
+    }
+
+    if is_solaris {
+        headers! { cfg:
+            "sys/lgrp_user_impl.h",
+        }
+    }
+
     cfg.skip_type(move |ty| match ty {
         "sighandler_t" => true,
         _ => false,
@@ -976,7 +987,7 @@ fn test_solarish(target: &str) {
         // EPOLLEXCLUSIVE is a relatively recent addition to the epoll interface and may not be
         // defined on older systems.  It is, however, safe to use on systems which do not
         // explicitly support it. (A no-op is an acceptable implementation of EPOLLEXCLUSIVE.)
-        "EPOLLEXCLUSIVE" => true,
+        "EPOLLEXCLUSIVE" if is_illumos => true,
 
         _ => false,
     });
@@ -1068,7 +1079,7 @@ fn test_solarish(target: &str) {
             // These functions may return int or void depending on the exact
             // configuration of the compilation environment, but the return
             // value is not useful (always 0) so we can ignore it:
-            "setservent" | "endservent" if is_illumos => true,
+            "setservent" | "endservent" => true,
 
             // Following illumos#3729, getifaddrs was changed to a
             // redefine_extname symbol in order to preserve compatibility.

libc-test/semver/TODO-unix.txt

@@ -3,3 +3,8 @@
 getpwuid_r
 pthread_atfork
 pthread_sigmask
+# * Solaris is missing flock(2)
+LOCK_EX
+LOCK_NB
+LOCK_SH
+LOCK_UN

libc-test/semver/unix.txt

@@ -189,10 +189,6 @@ ISTRIP
 IXANY
 IXOFF
 IXON
-LOCK_EX
-LOCK_NB
-LOCK_SH
-LOCK_UN
 LOG_ALERT
 LOG_AUTH
 LOG_CONS

src/unix/mod.rs

@@ -622,10 +622,8 @@ extern "C" {
         target_vendor = "nintendo"
     )))]
     #[cfg_attr(target_os = "netbsd", link_name = "__socket30")]
-    #[cfg_attr(
-        any(target_os = "illumos", target_os = "solaris"),
-        link_name = "__xnet_socket"
-    )]
+    #[cfg_attr(target_os = "illumos", link_name = "__xnet_socket")]
+    #[cfg_attr(target_os = "solaris", link_name = "__xnet7_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(
@@ -931,6 +929,7 @@ extern "C" {
     pub fn getppid() -> pid_t;
     pub fn getuid() -> uid_t;
     pub fn isatty(fd: ::c_int) -> ::c_int;
+    #[cfg_attr(target_os = "solaris", link_name = "__link_xpg4")]
     pub fn link(src: *const c_char, dst: *const c_char) -> ::c_int;
     pub fn lseek(fd: ::c_int, offset: off_t, whence: ::c_int) -> off_t;
     pub fn pathconf(path: *const c_char, name: ::c_int) -> c_long;
@@ -968,7 +967,10 @@ extern "C" {
         all(target_os = "macos", target_arch = "x86"),
         link_name = "ttyname_r$UNIX2003"
     )]
-    #[cfg_attr(target_os = "illumos", link_name = "__posix_ttyname_r")]
+    #[cfg_attr(
+        any(target_os = "illumos", target_os = "solaris"),
+        link_name = "__posix_ttyname_r"
+    )]
     pub fn ttyname_r(fd: ::c_int, buf: *mut c_char, buflen: ::size_t) -> ::c_int;
     pub fn unlink(c: *const c_char) -> ::c_int;
     #[cfg_attr(
@@ -1089,8 +1091,6 @@ extern "C" {
     )]
     pub fn realpath(pathname: *const ::c_char, resolved: *mut ::c_char) -> *mut ::c_char;
 
-    pub fn flock(fd: ::c_int, operation: ::c_int) -> ::c_int;
-
     #[cfg_attr(target_os = "netbsd", link_name = "__times13")]
     pub fn times(buf: *mut ::tms) -> ::clock_t;
 
@@ -1399,6 +1399,7 @@ extern "C" {
     #[cfg_attr(target_os = "netbsd", link_name = "__sigpending14")]
     pub fn sigpending(set: *mut sigset_t) -> ::c_int;
 
+    #[cfg_attr(target_os = "solaris", link_name = "__sysconf_xpg7")]
     pub fn sysconf(name: ::c_int) -> ::c_long;
 
     pub fn mkfifo(path: *const c_char, mode: mode_t) -> ::c_int;
@@ -1452,10 +1453,15 @@ cfg_if! {
     if #[cfg(not(any(target_os = "emscripten",
                      target_os = "android",
                      target_os = "haiku",
-                     target_os = "nto")))] {
+                     target_os = "nto",
+                     target_os = "solaris")))] {
         extern "C" {
             pub fn adjtime(delta: *const timeval, olddelta: *mut timeval) -> ::c_int;
         }
+    } else if #[cfg(target_os = "solaris")] {
+        extern "C" {
+            pub fn adjtime(delta: *mut timeval, olddelta: *mut timeval) -> ::c_int;
+        }
     }
 }
 
@@ -1477,6 +1483,14 @@ cfg_if! {
     }
 }
 
+cfg_if! {
+    if #[cfg(not(target_os = "solaris"))] {
+        extern "C" {
+            pub fn flock(fd: ::c_int, operation: ::c_int) -> ::c_int;
+        }
+    }
+}
+
 cfg_if! {
     if #[cfg(not(any(target_env = "uclibc", target_os = "nto")))] {
         extern "C" {