0.3.0: converge relibc to upstream 0.6.0 + Red Bear patches

src/header/stdio/constants.rs

@@ -1,4 +1,4 @@
-use crate::platform::types::*;
+use crate::platform::types::{c_int, c_uint, int32_t, off_t};
 
 pub const EOF: c_int = -1;
 pub const BUFSIZ: c_int = 1024;
@@ -24,13 +24,26 @@ pub const _IOFBF: c_int = 0;
 pub const _IOLBF: c_int = 1;
 pub const _IONBF: c_int = 2;
 
+// renameat2
+// (uint instead of int is intentional)
+/// Rename but don't replace the target if it exists.
+pub const RENAME_NOREPLACE: c_uint = 0x01;
+/// Atomically swap two files.
+#[cfg(target_os = "linux")]
+pub const RENAME_EXCHANGE: c_uint = 0x02;
+#[cfg(target_os = "linux")]
+pub const RENAME_WHITEOUT: c_uint = 0x04;
+
+// /dev/tty + nul
+pub const L_ctermid: usize = 9;
 // form of name is /XXXXXX, so 7
 pub const L_tmpnam: c_int = 7;
 // 36^6 (26 letters + 10 digits) is larger than i32::MAX, so just set to that
 // for now
 pub const TMP_MAX: int32_t = 2_147_483_647;
-// XXX: defined manually in bits/stdio.h as well because cbindgen can't handle
+// XXX: defined manually in cbindgen as well because it can't handle
 //      string constants in any form AFAICT
+/// cbindgen:ignore
 pub const P_tmpdir: &[u8; 5] = b"/tmp\0";
 
 #[allow(non_camel_case_types)]