add zeroobj for private anonymous mappings

2014-07-03 13:58:05 +09:00
parent 380fcbda73
commit 36cff84e05
4 changed files with 215 additions and 0 deletions
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -795,6 +795,13 @@ SYSCALL_DECLARE(mmap)
 			goto out;
 		}
 	}
+	else {
+		error = zeroobj_create(&memobj);
+		if (error) {
+			ekprintf("sys_mmap:zeroobj_create failed. %d\n", error);
+			goto out;
+		}
+	}

 	if ((flags & MAP_PRIVATE) && (maxprot & PROT_READ)) {
 		maxprot |= PROT_WRITE;