Fix the definition of "struct stat" on 32-bit FreeBSD 12+

The original definitions were never correct.  But nobody noticed because
we don't do CI on 32-bit FreeBSD.  The problem is apparent now due to
 rust-lang#3723 , which caused the nightly toolchain to switch to a FreeBSD 12
ABI.

Fixes rust-lang/rust#130677

src/unix/bsd/freebsdlike/freebsd/arm.rs

@@ -6,36 +6,6 @@ pub type time_t = i64;
 pub type suseconds_t = i32;
 pub type register_t = i32;
 
-s! {
-    pub struct stat {
-        pub st_dev: ::dev_t,
-        pub st_ino: ::ino_t,
-        pub st_mode: ::mode_t,
-        pub st_nlink: ::nlink_t,
-        pub st_uid: ::uid_t,
-        pub st_gid: ::gid_t,
-        pub st_rdev: ::dev_t,
-        pub st_atime: ::time_t,
-        pub st_atime_nsec: ::c_long,
-        pub st_atime_pad: ::c_long,
-        pub st_mtime: ::time_t,
-        pub st_mtime_nsec: ::c_long,
-        pub st_mtime_pad: ::c_long,
-        pub st_ctime: ::time_t,
-        pub st_ctime_nsec: ::c_long,
-        pub st_ctime_pad: ::c_long,
-        pub st_size: ::off_t,
-        pub st_blocks: ::blkcnt_t,
-        pub st_blksize: ::blksize_t,
-        pub st_flags: ::fflags_t,
-        pub st_gen: u32,
-        pub st_lspare: i32,
-        pub st_birthtime: ::time_t,
-        pub st_birthtime_nsec: ::c_long,
-        pub st_birthtime_pad: ::c_long,
-    }
-}
-
 pub(crate) const _ALIGNBYTES: usize = ::mem::size_of::<::c_int>() - 1;
 pub const MAP_32BIT: ::c_int = 0x00080000;
 pub const MINSIGSTKSZ: ::size_t = 4096; // 1024 * 4

src/unix/bsd/freebsdlike/freebsd/freebsd12/b64.rs → src/unix/bsd/freebsdlike/freebsd/freebsd11/b32.rs

@@ -3,27 +3,26 @@
 pub struct stat {
     pub st_dev: ::dev_t,
     pub st_ino: ::ino_t,
-    pub st_nlink: ::nlink_t,
     pub st_mode: ::mode_t,
-    st_padding0: i16,
+    pub st_nlink: ::nlink_t,
     pub st_uid: ::uid_t,
     pub st_gid: ::gid_t,
-    st_padding1: i32,
     pub st_rdev: ::dev_t,
     pub st_atime: ::time_t,
     pub st_atime_nsec: ::c_long,
     pub st_mtime: ::time_t,
     pub st_mtime_nsec: ::c_long,
     pub st_ctime: ::time_t,
     pub st_ctime_nsec: ::c_long,
-    pub st_birthtime: ::time_t,
-    pub st_birthtime_nsec: ::c_long,
     pub st_size: ::off_t,
     pub st_blocks: ::blkcnt_t,
     pub st_blksize: ::blksize_t,
     pub st_flags: ::fflags_t,
-    pub st_gen: u64,
-    pub st_spare: [u64; 10],
+    pub st_gen: u32,
+    pub st_lspare: i32,
+    pub st_birthtime: ::time_t,
+    pub st_birthtime_nsec: ::c_long,
+    __unused: [u8; 8],
 }
 
 impl ::Copy for ::stat {}

src/unix/bsd/freebsdlike/freebsd/freebsd11/mod.rs

@@ -479,10 +479,11 @@ extern "C" {
 }
 
 cfg_if! {
-    if #[cfg(any(target_arch = "x86_64",
-                 target_arch = "aarch64",
-                 target_arch = "riscv64"))] {
+    if #[cfg(target_pointer_width = "64")] {
         mod b64;
         pub use self::b64::*;
+    } else {
+        mod b32;
+        pub use self::b32::*;
     }
 }

src/unix/bsd/freebsdlike/freebsd/freebsd12/mod.rs

@@ -218,6 +218,40 @@ s! {
         /// kthread flag.
         pub ki_tdflags: ::c_long,
     }
+
+    pub struct stat {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::nlink_t,
+        pub st_mode: ::mode_t,
+        st_padding0: i16,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        st_padding1: i32,
+        pub st_rdev: ::dev_t,
+        #[cfg(target_arch = "x86")]
+        st_atim_ext: i32,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_mtim_ext: i32,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_ctim_ext: i32,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_btim_ext: i32,
+        pub st_birthtime: ::time_t,
+        pub st_birthtime_nsec: ::c_long,
+        pub st_size: ::off_t,
+        pub st_blocks: ::blkcnt_t,
+        pub st_blksize: ::blksize_t,
+        pub st_flags: ::fflags_t,
+        pub st_gen: u64,
+        pub st_spare: [u64; 10],
+    }
 }
 
 s_no_extra_traits! {
@@ -488,15 +522,6 @@ extern "C" {
     pub fn basename(path: *mut ::c_char) -> *mut ::c_char;
 }
 
-cfg_if! {
-    if #[cfg(any(target_arch = "x86_64",
-                 target_arch = "aarch64",
-                 target_arch = "riscv64"))] {
-        mod b64;
-        pub use self::b64::*;
-    }
-}
-
 cfg_if! {
     if #[cfg(target_arch = "x86_64")] {
         mod x86_64;

src/unix/bsd/freebsdlike/freebsd/freebsd13/mod.rs

@@ -228,6 +228,40 @@ s! {
         /// kthread flag.
         pub ki_tdflags: ::c_long,
     }
+
+    pub struct stat {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::nlink_t,
+        pub st_mode: ::mode_t,
+        st_padding0: i16,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        st_padding1: i32,
+        pub st_rdev: ::dev_t,
+        #[cfg(target_arch = "x86")]
+        st_atim_ext: i32,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_mtim_ext: i32,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_ctim_ext: i32,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_btim_ext: i32,
+        pub st_birthtime: ::time_t,
+        pub st_birthtime_nsec: ::c_long,
+        pub st_size: ::off_t,
+        pub st_blocks: ::blkcnt_t,
+        pub st_blksize: ::blksize_t,
+        pub st_flags: ::fflags_t,
+        pub st_gen: u64,
+        pub st_spare: [u64; 10],
+    }
 }
 
 s_no_extra_traits! {
@@ -529,15 +563,6 @@ extern "C" {
     pub fn kvm_kerndisp(kd: *mut ::kvm_t) -> ::kssize_t;
 }
 
-cfg_if! {
-    if #[cfg(any(target_arch = "x86_64",
-                 target_arch = "aarch64",
-                 target_arch = "riscv64"))] {
-        mod b64;
-        pub use self::b64::*;
-    }
-}
-
 cfg_if! {
     if #[cfg(target_arch = "x86_64")] {
         mod x86_64;

src/unix/bsd/freebsdlike/freebsd/freebsd14/mod.rs

@@ -228,6 +228,40 @@ s! {
         /// kthread flag.
         pub ki_tdflags: ::c_long,
     }
+
+    pub struct stat {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::nlink_t,
+        pub st_mode: ::mode_t,
+        st_padding0: i16,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        st_padding1: i32,
+        pub st_rdev: ::dev_t,
+        #[cfg(target_arch = "x86")]
+        st_atim_ext: i32,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_mtim_ext: i32,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_ctim_ext: i32,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_long,
+        #[cfg(target_arch = "x86")]
+        st_btim_ext: i32,
+        pub st_birthtime: ::time_t,
+        pub st_birthtime_nsec: ::c_long,
+        pub st_size: ::off_t,
+        pub st_blocks: ::blkcnt_t,
+        pub st_blksize: ::blksize_t,
+        pub st_flags: ::fflags_t,
+        pub st_gen: u64,
+        pub st_spare: [u64; 10],
+    }
 }
 
 s_no_extra_traits! {
@@ -529,15 +563,6 @@ extern "C" {
     pub fn kvm_kerndisp(kd: *mut ::kvm_t) -> ::kssize_t;
 }
 
-cfg_if! {
-    if #[cfg(any(target_arch = "x86_64",
-                 target_arch = "aarch64",
-                 target_arch = "riscv64"))] {
-        mod b64;
-        pub use self::b64::*;
-    }
-}
-
 cfg_if! {
     if #[cfg(target_arch = "x86_64")] {
         mod x86_64;