From 21efbba39340300a7ba9d5f4f94017f5ff956833 Mon Sep 17 00:00:00 2001
From: Kimplul <kimi.h.kuparinen@gmail.com>
Date: Sat, 2 Nov 2024 16:02:41 +0200
Subject: intial working sys_spawn

---
 tests/common/sys.h    |  2 +-
 tests/spawn/init.c    | 34 ++++++++++++++++++++++++++++++++++
 tests/spawn/source.mk |  1 +
 tests/spawn/spawn.c   | 18 ++++++++++++++++++
 4 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100644 tests/spawn/init.c
 create mode 100644 tests/spawn/source.mk
 create mode 100644 tests/spawn/spawn.c

(limited to 'tests')

diff --git a/tests/common/sys.h b/tests/common/sys.h
index 3e98abf..0bee8bd 100644
--- a/tests/common/sys.h
+++ b/tests/common/sys.h
@@ -240,7 +240,7 @@ static inline enum sys_status sys_exec(uintptr_t bin, uintptr_t interp)
 /* negative IDs mean errors */
 static inline id_t sys_spawn(uintptr_t bin, uintptr_t interp)
 {
-	struct sys_ret r = syscall2(SYS_EXEC, bin, interp);
+	struct sys_ret r = syscall2(SYS_SPAWN, bin, interp);
 	return r.s;
 }
 
diff --git a/tests/spawn/init.c b/tests/spawn/init.c
new file mode 100644
index 0000000..8c25615
--- /dev/null
+++ b/tests/spawn/init.c
@@ -0,0 +1,34 @@
+#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 spawn...\n");
+	id_t new = sys_spawn(spawn, 0);
+	check(new > 1, "spawn failed?\n");
+
+	printf("giving spawn CAP_POWER\n");
+	enum sys_status s = sys_set_cap(new, CAP_POWER);
+	check(s == OK, "CAP_POWER failed?\n");
+
+	printf("swapping to spawn\n");
+	s = sys_swap(new);
+	check(s == OK, "swap to spawn failed?\n");
+}
diff --git a/tests/spawn/source.mk b/tests/spawn/source.mk
new file mode 100644
index 0000000..9a1f676
--- /dev/null
+++ b/tests/spawn/source.mk
@@ -0,0 +1 @@
+DO	!= ./scripts/gen-simple -n spawn -p init -p spawn
diff --git a/tests/spawn/spawn.c b/tests/spawn/spawn.c
new file mode 100644
index 0000000..67d64f8
--- /dev/null
+++ b/tests/spawn/spawn.c
@@ -0,0 +1,18 @@
+#include <common/test.h>
+
+START(pid, tid, d0, d1, d2, d3)
+{
+	UNUSED(d2);
+	UNUSED(d3);
+
+	printf("pid = %ld, tid = %ld, d0 = %ld, d1 = %ld\n",
+			pid, tid, d0, d1);
+
+	check(pid == 0, "unexpected pid for spawn\n");
+	check(tid == 2, "unexpected tid for spawn\n");
+	check(d0 == SYS_USER_SPAWNED, "unexpected d0 for spawn\n");
+	check(d1 == 2, "unexpected d1 for spawn\n");
+
+	printf("causing shutdown, assuming init gave us CAP_POWER\n");
+	ok();
+}
-- 
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