X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmman%2Fmunmap.c;h=91aefd407f5071e348dc020aa98c3719bb6b8931;hb=fe514951af4e67f05d17d796251af9a8229761eb;hp=c9661cda3354a56c5f96b854e007c6655f26a8d1;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/mman/munmap.c b/src/mman/munmap.c
index c9661cda..91aefd40 100644
--- a/src/mman/munmap.c
+++ b/src/mman/munmap.c
@@ -3,9 +3,18 @@
 #include "syscall.h"
 #include "libc.h"
 
+static void dummy1(int x) { }
+static void dummy0(void) { }
+weak_alias(dummy1, __vm_lock);
+weak_alias(dummy0, __vm_unlock);
+
 int __munmap(void *start, size_t len)
 {
-	return syscall2(__NR_munmap, (long)start, len);
+	int ret;
+	__vm_lock(-1);
+	ret = syscall(SYS_munmap, start, len);
+	__vm_unlock();
+	return ret;
 }
 
 weak_alias(__munmap, munmap);