split out suseconds_t for namespace pollution reduction preparation

src/header/bits_suseconds-t/cbindgen.toml

@@ -0,0 +1,18 @@
+# POSIX header spec: https://pubs.opengroup.org/onlinepubs/9799919799/basedefs/sys_types.h.html
+#
+# This type is split out to prevent importing all of sys/types.h into other headers.
+#
+# POSIX headers that require suseconds_t:
+# - sys/select.h
+# - sys/time.h
+# - sys/types.h (where it should be defined)
+sys_includes = []
+include_guard = "_RELIBC_BITS_SUSECONDS_T_H"
+language = "C"
+style = "type"
+no_includes = true
+cpp_compat = true
+[export]
+include = ["suseconds_t"]
+[enum]
+prefix_with_name = true

src/header/bits_suseconds-t/mod.rs

@@ -0,0 +1,14 @@
+#[cfg(target_os = "linux")]
+use crate::platform::types::c_long;
+
+#[cfg(not(target_os = "linux"))]
+use crate::platform::types::c_int;
+
+#[cfg(target_os = "linux")]
+#[allow(non_camel_case_types)]
+/// Used for time in microseconds.
+pub type suseconds_t = c_long;
+#[cfg(not(target_os = "linux"))]
+#[allow(non_camel_case_types)]
+/// Used for time in microseconds.
+pub type suseconds_t = c_int;

src/header/mod.rs

@@ -15,6 +15,8 @@ pub mod bits_safamily_t;
 pub mod bits_sigset_t;
 #[path = "bits_socklen-t/mod.rs"]
 pub mod bits_socklen_t;
+#[path = "bits_suseconds-t/mod.rs"]
+pub mod bits_suseconds_t;
 #[path = "bits_time-t/mod.rs"]
 pub mod bits_time_t;
 pub mod bits_timespec;

src/header/sys_types_internal/cbindgen.toml

@@ -1,6 +1,7 @@
 sys_includes = ["stddef.h"]
 # TODO: figure out how to export void* type
 after_includes = """
+#include <bits/suseconds-t.h>
 #include <bits/time-t.h>
 
 typedef void* timer_t;
@@ -25,7 +26,6 @@ include = [
   "id_t",
   "ssize_t",
   "useconds_t",
-  "suseconds_t",
   "clock_t",
   "clockid_t",
   "blkcnt_t",

src/header/sys_types_internal/mod.rs

@@ -7,7 +7,7 @@
 //! <https://pubs.opengroup.org/onlinepubs/009695399/basedefs/sys/types.h.html>
 //! for the old specification.
 
-pub use crate::header::bits_time_t::time_t;
+pub use crate::header::{bits_suseconds_t::suseconds_t, bits_time_t::time_t};
 use crate::platform::types::{
     c_char, c_int, c_long, c_longlong, c_uchar, c_uint, c_ulong, c_ulonglong, c_ushort,
 };
@@ -42,13 +42,6 @@ pub type id_t = c_uint;
 pub type ssize_t = c_long;
 pub type useconds_t = c_uint;
 
-#[cfg(target_os = "linux")]
-/// Used for time in microseconds.
-pub type suseconds_t = c_long;
-#[cfg(not(target_os = "linux"))]
-/// Used for time in microseconds.
-pub type suseconds_t = c_int;
-
 /// Used for system times in clock ticks or CLOCKS_PER_SEC.
 pub type clock_t = c_long;
 /// Used for clock ID type in the clock and timer functions.