check spawn exhaustion

1 files changed, 35 insertions, 0 deletions

diff --git a/tests/spawn-exhaustion/init.c b/tests/spawn-exhaustion/init.c
new file mode 100644
index 0000000..1862648
--- /dev/null
+++ b/tests/spawn-exhaustion/init.c
@@ -0,0 +1,35 @@
+#include <common/test.h>
+#include <common/cpio.h>
+
+START(pid, tid, d0, d1, d2, d3)
+{
+	UNUSED(pid);
+	UNUSED(tid);
+	UNUSED(d0);
+	UNUSED(d1);
+	UNUSED(d2);
+	UNUSED(d3);
+
+	check(pid == 0, "illegal pid for init\n");
+	printf("finding spawn in cpio archive %lx...\n", d2);
+	struct cpio_header *cp = cpio_find_file((const void *)d2,
+			"spawn", sizeof("spawn") - 1);
+
+	check(cp, "couldn't find spawn?\n");
+	long name_len = convnum(cp->c_namesize, 8, 16);
+	uintptr_t spawn = (uintptr_t)(cp) + align_up(sizeof(struct cpio_header) + name_len, 4);
+	printf("found spawn at %lx\n", spawn);
+
+	printf("doing spawns...\n");
+
+	int counter = 0;
+	while (1) {
+		printf("spawning %d\n", counter++);
+		id_t new = sys_spawn(spawn, 0);
+		if (new < 0)
+			break;
+	}
+
+	/* could also check for memory leaks but this is good enough for now */
+	ok();
+}