Add getrandom and sys/random.h

src/header/mod.rs

@@ -50,6 +50,7 @@ pub mod _wctype;
 pub mod arch_aarch64_user;
 pub mod arch_x64_user;
 pub mod sys_procfs;
+pub mod sys_random;
 pub mod sys_uio;
 pub mod sys_un;
 pub mod sys_utsname;

src/header/sys_random/cbindgen.toml

@@ -0,0 +1,9 @@
+sys_includes = ["sys/types.h"]
+include_guard = "_SYS_RANDOM_H"
+language = "C"
+style = "Tag"
+no_includes = true
+cpp_compat = true
+
+[enum]
+prefix_with_name = true

src/header/sys_random/mod.rs

@@ -0,0 +1,14 @@
+use core::slice;
+
+use crate::platform::{Pal, Sys, types::*};
+
+pub const GRND_NONBLOCK: c_uint = 1;
+pub const GRND_RANDOM: c_uint = 2;
+
+#[no_mangle]
+unsafe extern "C" fn getrandom(buf: *mut c_void, buflen: size_t, flags: c_uint) -> ssize_t {
+    Sys::getrandom(slice::from_raw_parts_mut(
+        buf as *mut u8,
+        buflen as usize
+    ), flags)
+}