mirror of
https://gitlab.com/buildroot.org/buildroot.git
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e06cfae9cb
This commit adds a simple bpftrace test that ensures that not only it builds fine, but it also runs properly on a minimal test scenario. Assisted-by: GPT-5.6 Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> [Julien: - reindent emulator.boot() options - add a call to "bpftrace --version" ] Signed-off-by: Julien Olivain <ju.o@free.fr>
66 lines
2.3 KiB
Python
66 lines
2.3 KiB
Python
import os
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import infra.basetest
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# gitlab-runner: 2xlarge
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class TestBpftrace(infra.basetest.BRTest):
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kern_fragment = infra.filepath(
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"tests/package/test_bpftrace/linux-bpftrace.fragment"
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)
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config = f"""
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BR2_aarch64=y
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BR2_TOOLCHAIN_EXTERNAL=y
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BR2_TARGET_GENERIC_GETTY_PORT="ttyAMA0"
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BR2_LINUX_KERNEL=y
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BR2_LINUX_KERNEL_CUSTOM_VERSION=y
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BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="6.6.32"
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BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG=y
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BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE="board/qemu/aarch64-virt/linux.config"
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BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="{kern_fragment}"
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BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
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BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
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BR2_PACKAGE_BPFTRACE=y
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BR2_PACKAGE_TAR=y
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BR2_TARGET_ROOTFS_EXT2=y
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BR2_TARGET_ROOTFS_EXT2_4=y
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BR2_TARGET_ROOTFS_EXT2_SIZE="256M"
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# BR2_TARGET_ROOTFS_TAR is not set
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"""
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def test_run(self):
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drive = os.path.join(self.builddir, "images", "rootfs.ext4")
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kern = os.path.join(self.builddir, "images", "Image")
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self.emulator.boot(
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arch="aarch64",
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kernel=kern,
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kernel_cmdline=["root=/dev/vda console=ttyAMA0"],
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options=[
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"-M", "virt",
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"-cpu", "cortex-a57",
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"-m", "256M",
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"-drive", f"file={drive},if=virtio,format=raw"
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]
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)
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self.emulator.login()
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self.assertRunOk("mount -t debugfs none /sys/kernel/debug/")
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# Check the program can run.
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self.assertRunOk("bpftrace --version")
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# Check that bpftrace can find a syscall tracepoint.
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self.assertRunOk("bpftrace -l 'tracepoint:syscalls:sys_enter_execve'")
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# Compile and attach a tracepoint program, then trigger it with the
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# command executed by bpftrace. The marker avoids matching volatile
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# fields such as PIDs or command names.
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cmd = (
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"bpftrace -e 'tracepoint:syscalls:sys_enter_execve "
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'{ printf("buildroot-bpftrace-test\\n"); exit(); }\' '
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"-c /bin/true"
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)
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output, ret = self.emulator.run(cmd)
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self.assertEqual(ret, 0)
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self.assertIn("buildroot-bpftrace-test", "\n".join(output))
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