hurd: Fix l_type and l_whence types

on hurd x86, they are set to int types:

https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/mach/hurd/i386/bits/types/struct_flock.h

Author: sthibaul

src/process/types.rs

@@ -30,12 +30,25 @@ pub struct Flock {
 #[cfg(not(target_os = "horizon"))]
 impl Flock {
     pub(crate) const unsafe fn from_raw_unchecked(raw_fl: c::flock) -> Self {
-        Self {
-            start: raw_fl.l_start as _,
-            length: raw_fl.l_len as _,
-            pid: Pid::from_raw(raw_fl.l_pid),
-            typ: transmute::<i16, FlockType>(raw_fl.l_type),
-            offset_type: transmute::<i16, FlockOffsetType>(raw_fl.l_whence),
+        #[cfg(not(all(target_os = "hurd", target_arch = "x86")))]
+        {
+            Self {
+                start: raw_fl.l_start as _,
+                length: raw_fl.l_len as _,
+                pid: Pid::from_raw(raw_fl.l_pid),
+                typ: transmute::<i16, FlockType>(raw_fl.l_type),
+                offset_type: transmute::<i16, FlockOffsetType>(raw_fl.l_whence),
+            }
+        }
+        #[cfg(all(target_os = "hurd", target_arch = "x86"))]
+        {
+            Self {
+                start: raw_fl.l_start as _,
+                length: raw_fl.l_len as _,
+                pid: Pid::from_raw(raw_fl.l_pid),
+                typ: transmute::<i32, FlockType>(raw_fl.l_type),
+                offset_type: transmute::<i32, FlockOffsetType>(raw_fl.l_whence),
+            }
         }
     }
 
@@ -68,7 +81,8 @@ impl From<FlockType> for Flock {
 /// [`fcntl_getlk`]: crate::process::fcntl_getlk()
 #[cfg(not(target_os = "horizon"))]
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
-#[repr(i16)]
+#[cfg_attr(not(all(target_os = "hurd", target_arch = "x86")), repr(i16))]
+#[cfg_attr(all(target_os = "hurd", target_arch = "x86"), repr(i32))]
 pub enum FlockType {
     /// `F_RDLCK`
     ReadLock = c::F_RDLCK as _,
@@ -83,7 +97,8 @@ pub enum FlockType {
 /// [`fcntl_getlk`]: crate::process::fcntl_getlk()
 #[cfg(not(target_os = "horizon"))]
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
-#[repr(i16)]
+#[cfg_attr(not(all(target_os = "hurd", target_arch = "x86")), repr(i16))]
+#[cfg_attr(all(target_os = "hurd", target_arch = "x86"), repr(i32))]
 pub enum FlockOffsetType {
     /// `F_SEEK_SET`
     Set = c::SEEK_SET as _,