From 0200b3c91311f2f7bd5b5f74738ede773b584285 Mon Sep 17 00:00:00 2001
From: Aaron Kaiser <a_kaiser@posteo.de>
Date: Tue, 14 May 2024 13:54:39 +0200
Subject: [PATCH] Use memfd secret

---
 src/bump_allocator.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/bump_allocator.rs b/src/bump_allocator.rs
index 6d99375..ed92f7d 100644
--- a/src/bump_allocator.rs
+++ b/src/bump_allocator.rs
@@ -3,7 +3,7 @@ use std::{
     usize,
 };
 
-use libc::{c_char, c_void, ftruncate, memfd_create, mmap, MAP_FAILED, MAP_SHARED, PROT_READ, PROT_WRITE};
+use libc::{c_void, ftruncate, mmap, syscall, SYS_memfd_secret, MAP_FAILED, MAP_SHARED, PROT_READ, PROT_WRITE};
 
 pub(crate) const MEMFD_INITIAL_SIZE: usize = 1024 * 1024;
 const MMAP_SIZE: usize = 1024 * 1024;
@@ -26,7 +26,7 @@ impl BumpAllocator {
     unsafe fn new() -> Self {
         assert!(MMAP_SIZE >= MEMFD_INITIAL_SIZE);
 
-        let data_fd = memfd_create("data\x00".as_ptr() as *const c_char, 0);
+        let data_fd = syscall(SYS_memfd_secret, 0) as i32;
 
         assert!(data_fd > 0);