From 4abab5ad6c8465a7528ccdd5f49367da05f78bbd Mon Sep 17 00:00:00 2001
From: Vladimir Azarov <avm@intermediate-node.net>
Date: Tue, 1 Oct 2024 15:47:05 +0200
Subject: Initial version

---
 src/mman/mprotect.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 src/mman/mprotect.c

(limited to 'src/mman/mprotect.c')

diff --git a/src/mman/mprotect.c b/src/mman/mprotect.c
new file mode 100644
index 0000000..535787b
--- /dev/null
+++ b/src/mman/mprotect.c
@@ -0,0 +1,13 @@
+#include <sys/mman.h>
+#include "libc.h"
+#include "syscall.h"
+
+int __mprotect(void *addr, size_t len, int prot)
+{
+	size_t start, end;
+	start = (size_t)addr & -PAGE_SIZE;
+	end = (size_t)((char *)addr + len + PAGE_SIZE-1) & -PAGE_SIZE;
+	return syscall(SYS_mprotect, start, end-start, prot);
+}
+
+weak_alias(__mprotect, mprotect);
-- 
cgit v1.2.3