Merge branch 'split-gidt' into 'master'

split out gid_t from sys_types

See merge request redox-os/relibc!1294

src/header/bits_gid-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 gid_t:
+# - grp.h
+# - pwd.h
+# - sys/ipc.h (TODO not present in relibc)
+# - sys/stat.h
+# - sys/types.h (where it should be defined)
+# - unistd.h
+sys_includes = []
+include_guard = "_RELIBC_BITS_GID_T_H"
+language = "C"
+style = "type"
+no_includes = true
+cpp_compat = true
+[export]
+include = ["gid_t"]
+[enum]
+prefix_with_name = true

src/header/bits_gid-t/mod.rs

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

src/header/mod.rs

@@ -5,6 +5,8 @@ pub mod _fenv;
 pub mod arpa_inet;
 pub mod assert;
 pub mod bits_arpainet;
+#[path = "bits_gid-t/mod.rs"]
+pub mod bits_gid_t;
 pub mod bits_iovec;
 #[path = "bits_locale-t/mod.rs"]
 pub mod bits_locale_t;

src/header/sys_types_internal/cbindgen.toml

@@ -2,6 +2,7 @@
 sys_includes = ["stddef.h"]
 # TODO: figure out how to export void* type
 after_includes = """
+#include <bits/gid-t.h>
 #include <bits/off-t.h>
 #include <bits/pid-t.h>
 #include <bits/ssize-t.h>
@@ -21,7 +22,6 @@ include = [
   "dev_t",
   "ino_t",
   "reclen_t",
-  "gid_t",
   "uid_t",
   "mode_t",
   "nlink_t",

src/header/sys_types_internal/mod.rs

@@ -8,8 +8,8 @@
 //! for the old specification.
 
 pub use crate::header::{
-    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,
+    bits_gid_t::gid_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,
@@ -23,8 +23,6 @@ pub type dev_t = c_ulonglong;
 pub type ino_t = c_ulonglong;
 /// Used for directory entry lengths.
 pub type reclen_t = c_ushort;
-/// Used for group IDs.
-pub type gid_t = c_int;
 /// Used for user IDs.
 pub type uid_t = c_int;
 /// Used for some file attributes.