Readd posix_spawn{_file_actions_t,attr_t} on Android

Co-authored-by: Jorge Aparicio <[email protected]>

Author: tesuji

libc-test/build.rs

@@ -1613,6 +1613,7 @@ fn test_android(target: &str) {
                "sched.h",
                "semaphore.h",
                "signal.h",
+               "spawn.h",
                "stddef.h",
                "stdint.h",
                "stdio.h",
@@ -1767,6 +1768,9 @@ fn test_android(target: &str) {
 
             // These are tested in the `linux_elf.rs` file.
             "Elf64_Phdr" | "Elf32_Phdr" => true,
+            // These are intended to be opaque
+            "posix_spawn_file_actions_t" => true,
+            "posix_spawnattr_t" => true,
             _ => false,
         }
     });

src/unix/linux_like/android/mod.rs

@@ -48,6 +48,10 @@ pub type Elf64_Xword = u64;
 
 pub type eventfd_t = u64;
 
+// these structs sit behind a heap allocation on Android
+pub type posix_spawn_file_actions_t = *mut ::c_void;
+pub type posix_spawnattr_t = *mut ::c_void;
+
 s! {
     pub struct stack_t {
         pub ss_sp: *mut ::c_void,