split out time_t to prepare for reducing namespace pollution

src/header/bits_time-t/cbindgen.toml

@@ -0,0 +1,21 @@
+# 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 time_t:
+# - sched.h
+# - sys/select.h
+# - sys/stat.h
+# - sys/time.h
+# - sys/types.h (where it should be defined)
+# - time.h
+sys_includes = []
+include_guard = "_RELIBC_BITS_TIME_T_H"
+language = "C"
+style = "type"
+no_includes = true
+cpp_compat = true
+[export]
+include = ["time_t"]
+[enum]
+prefix_with_name = true

src/header/bits_time-t/mod.rs

@@ -0,0 +1,5 @@
+use crate::platform::types::c_longlong;
+
+/// Used for time in seconds.
+#[allow(non_camel_case_types)]
+pub type time_t = c_longlong;

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_time-t/mod.rs"]
+pub mod bits_time_t;
 pub mod bits_timespec;
 // complex.h implemented in C
 pub mod cpio;

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/time-t.h>
 
 typedef void* timer_t;
 """
@@ -23,7 +24,6 @@ include = [
   "pid_t",
   "id_t",
   "ssize_t",
-  "time_t",
   "useconds_t",
   "suseconds_t",
   "clock_t",

src/header/sys_types_internal/mod.rs

@@ -10,6 +10,7 @@
 use crate::platform::types::{
     c_char, c_int, c_long, c_longlong, c_uchar, c_uint, c_ulong, c_ulonglong, c_ushort,
 };
+pub use crate::header::bits_time_t::time_t;
 
 /// Used for block sizes.
 pub type blksize_t = c_long;
@@ -39,8 +40,6 @@ pub type pid_t = c_int;
 pub type id_t = c_uint;
 /// Used for a count of bytes or an error indication.
 pub type ssize_t = c_long;
-/// Used for time in seconds.
-pub type time_t = c_longlong;
 pub type useconds_t = c_uint;
 
 #[cfg(target_os = "linux")]