initial check-in, version 0.5.0v0.5.0

1 files changed, 18 insertions, 0 deletions

diff --git a/src/mman/mmap.c b/src/mman/mmap.c
new file mode 100644
index 00000000..93c76582
--- /dev/null
+++ b/src/mman/mmap.c
@@ -0,0 +1,18 @@
+#include <unistd.h>
+#include <sys/mman.h>
+#include <errno.h>
+#include <limits.h>
+#include "syscall.h"
+#include "libc.h"
+
+void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off)
+{
+	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;
+	return (void *)syscall6(__NR_mmap2, (long)start, len, prot, flags, fd, off>>12);
+}
+
+weak_alias(__mmap, mmap);
+
+LFS64(mmap);