Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 18 insertions, 0 deletions

diff --git a/vendor/rustix/src/backend/libc/rand/syscalls.rs b/vendor/rustix/src/backend/libc/rand/syscalls.rs
new file mode 100644
index 0000000..3a3929e
--- /dev/null
+++ b/vendor/rustix/src/backend/libc/rand/syscalls.rs
@@ -0,0 +1,18 @@
+//! libc syscalls supporting `rustix::rand`.
+
+#[cfg(linux_kernel)]
+use {crate::backend::c, crate::backend::conv::ret_usize, crate::io, crate::rand::GetRandomFlags};
+
+#[cfg(linux_kernel)]
+pub(crate) unsafe fn getrandom(
+    buf: *mut u8,
+    cap: usize,
+    flags: GetRandomFlags,
+) -> io::Result<usize> {
+    // `getrandom` wasn't supported in glibc until 2.25.
+    weak_or_syscall! {
+        fn getrandom(buf: *mut c::c_void, buflen: c::size_t, flags: c::c_uint) via SYS_getrandom -> c::ssize_t
+    }
+
+    ret_usize(getrandom(buf.cast(), cap, flags.bits()))
+}