testsuite/test-modprobe: Test --show-modversions

We can't test actual CRC values, because they may vary depending on
kernel configuration. We can ensure the correct symbol names show up
though.

Signed-off-by: Matthew Maurer <[email protected]>

Author: maurer

scripts/setup-rootfs.sh

@@ -97,6 +97,7 @@ map=(
     ["test-modprobe/external/lib/modules/external/"]="mod-simple.ko"
     ["test-modprobe/module-from-abspath/home/foo/"]="mod-simple.ko"
     ["test-modprobe/module-from-relpath/home/foo/"]="mod-simple.ko"
+    ["test-modprobe/show-modversions/mod-simple.ko"]="mod-simple.ko"
     ["test-depmod/modules-order-compressed$MODULE_DIRECTORY/4.4.4/kernel/drivers/block/cciss.ko"]="mod-fake-cciss.ko"
     ["test-depmod/modules-order-compressed$MODULE_DIRECTORY/4.4.4/kernel/drivers/scsi/hpsa.ko"]="mod-fake-hpsa.ko"
     ["test-depmod/modules-order-compressed$MODULE_DIRECTORY/4.4.4/kernel/drivers/scsi/scsi_mod.ko"]="mod-fake-scsi-mod.ko"

testsuite/rootfs-pristine/test-modprobe/show-modversions/versions-mod-simple.txt

@@ -0,0 +1,11 @@
+0x........	single_open
+0x........	seq_write
+0x........	debugfs_remove
+0x........	seq_lseek
+0x........	seq_read
+0x........	single_release
+0x........	__fentry__
+0x........	debugfs_create_dir
+0x........	debugfs_create_file
+0x........	__x86_return_thunk
+0x........	module_layout

testsuite/test-modprobe.c

@@ -361,4 +361,20 @@ DEFINE_TEST(modprobe_module_from_relpath,
 	.modules_loaded = "mod-simple",
 	);
 
+static noreturn int modprobe_show_modversions(const struct test *t)
+{
+	EXEC_MODPROBE("--show-modversions", "/mod-simple.ko");
+	exit(EXIT_FAILURE);
+}
+DEFINE_TEST(modprobe_show_modversions,
+	.description = "check if output for modprobe --show-modversions is correct",
+	.config = {
+		[TC_UNAME_R] = "4.4.4",
+		[TC_ROOTFS] = TESTSUITE_ROOTFS "test-modprobe/show-modversions",
+	},
+	.output = {
+		.out = TESTSUITE_ROOTFS "test-modprobe/show-modversions/versions-mod-simple.txt",
+		.regex = true,
+	});
+
 TESTSUITE_MAIN();