split out pid_t from sys_types

src/header/bits_pid-t/cbindgen.toml

@@ -0,0 +1,27 @@
+# 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 pid_t:
+# - sched.h
+# - signal.h
+# - spawn.h (TODO not present in relibc)
+# - sys/msg.h (TODO not present in relibc)
+# - sys/sem.h (TODO not present in relibc)
+# - sys/shm.h (TODO not present in relibc)
+# - sys/types.h (where it should be defined)
+# - sys/wait.h
+# - termios.h
+# - time.h
+# - unistd.h
+# - utmpx.h (TODO not present in relibc)
+sys_includes = []
+include_guard = "_RELIBC_BITS_PID_T_H"
+language = "C"
+style = "type"
+no_includes = true
+cpp_compat = true
+[export]
+include = ["pid_t"]
+[enum]
+prefix_with_name = true

src/header/bits_pid-t/mod.rs

@@ -0,0 +1,5 @@
+use crate::platform::types::c_int;
+
+/// Used for process IDs and process group IDs.
+#[allow(non_camel_case_types)]
+pub type pid_t = c_int;

src/header/mod.rs

@@ -10,6 +10,8 @@ pub mod bits_iovec;
 pub mod bits_locale_t;
 #[path = "bits_off-t/mod.rs"]
 pub mod bits_off_t;
+#[path = "bits_pid-t/mod.rs"]
+pub mod bits_pid_t;
 pub mod bits_pthread;
 #[path = "bits_safamily-t/mod.rs"]
 pub mod bits_safamily_t;

src/header/sys_types_internal/cbindgen.toml

@@ -3,6 +3,7 @@ sys_includes = ["stddef.h"]
 # TODO: figure out how to export void* type
 after_includes = """
 #include <bits/off-t.h>
+#include <bits/pid-t.h>
 #include <bits/ssize-t.h>
 #include <bits/suseconds-t.h>
 #include <bits/time-t.h>
@@ -24,7 +25,6 @@ include = [
   "uid_t",
   "mode_t",
   "nlink_t",
-  "pid_t",
   "id_t",
   "useconds_t",
   "clock_t",

src/header/sys_types_internal/mod.rs

@@ -8,7 +8,8 @@
 //! for the old specification.
 
 pub use crate::header::{
-    bits_off_t::off_t, bits_ssize_t::ssize_t, bits_suseconds_t::suseconds_t, bits_time_t::time_t,
+    bits_off_t::off_t, bits_pid_t::pid_t, bits_ssize_t::ssize_t, 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,
@@ -34,8 +35,6 @@ pub type mode_t = c_uint;
 pub type mode_t = c_int;
 /// Used for link counts.
 pub type nlink_t = c_ulong;
-/// Used for process IDs and process group IDs.
-pub type pid_t = c_int;
 /// Used as a general identifier; can be used to contain at least a pid_t, uid_t, or gid_t.
 pub type id_t = c_uint;
 pub type useconds_t = c_uint;