X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fmman%2Fmmap.c;h=fd2bb07e5d5fb53f180bf21e04145914d20e1aa1;hb=838951c97edc05cb2a25948ee542415b55b8f605;hp=5be6e12de13abaaae2f3af473d6c559216e4821f;hpb=2cdfb7ca26f46f151afbc23d5d94fc68597137f5;p=musl

diff --git a/src/mman/mmap.c b/src/mman/mmap.c
index 5be6e12d..fd2bb07e 100644
--- a/src/mman/mmap.c
+++ b/src/mman/mmap.c
@@ -5,16 +5,25 @@
 #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);
+
 void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off)
 {
+	void *ret;
 	if (sizeof(off_t) > sizeof(long))
 		if (((long)off & 0xfff) | ((long)((unsigned long long)off>>(12 + 8*(sizeof(off_t)-sizeof(long))))))
 			start = (void *)-1;
-#ifdef __NR_mmap2
-	return (void *)syscall6(__NR_mmap2, (long)start, len, prot, flags, fd, off>>12);
+	if (flags & MAP_FIXED) __vm_lock(-1);
+#ifdef SYS_mmap2
+	ret = (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off>>12);
 #else
-	return (void *)syscall6(__NR_mmap, (long)start, len, prot, flags, fd, off);
+	ret = (void *)syscall(SYS_mmap, start, len, prot, flags, fd, off);
 #endif
+	if (flags & MAP_FIXED) __vm_unlock();
+	return ret;
 }
 
 weak_alias(__mmap, mmap);