linux-kernel - [PATCH v3] kselftest: Add basic test for probing the rust sample modules

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Message-Id: <20240222162913.498197-1-laura.nao@collabora.com>
Date: Thu, 22 Feb 2024 17:29:13 +0100
From: Laura Nao <laura.nao@...labora.com>
To: ojeda@...nel.org,
	alex.gaynor@...il.com,
	wedsonaf@...il.com,
	shuah@...nel.org
Cc: usama.anjum@...labora.com,
	a.hindborg@...sung.com,
	aliceryhl@...gle.com,
	benno.lossin@...ton.me,
	bjorn3_gh@...tonmail.com,
	boqun.feng@...il.com,
	gary@...yguo.net,
	kernel@...labora.com,
	laura.nao@...labora.com,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	rust-for-linux@...r.kernel.org,
	kernel@...entinobst.de,
	Sergio Gonzalez Collado <sergio.collado@...il.com>
Subject: [PATCH v3] kselftest: Add basic test for probing the rust sample modules

Add new basic kselftest that checks if the available rust sample modules
can be added and removed correctly.

Signed-off-by: Laura Nao <laura.nao@...labora.com>
Reviewed-by: Sergio Gonzalez Collado <sergio.collado@...il.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
---
Changes in v3:
- Removed useless KSFT_PASS, KSFT_FAIL, KSFT_SKIP constants
- Used ktap_finished to print the results summary and handle the return code
Changes in v2:
- Added missing SPDX line
- Edited test_probe_samples.sh script to use the common KTAP helpers file
---
 MAINTAINERS                                   |  1 +
 tools/testing/selftests/Makefile              |  1 +
 tools/testing/selftests/rust/Makefile         |  4 +++
 .../selftests/rust/test_probe_samples.sh      | 34 +++++++++++++++++++
 4 files changed, 40 insertions(+)
 create mode 100644 tools/testing/selftests/rust/Makefile
 create mode 100755 tools/testing/selftests/rust/test_probe_samples.sh

diff --git a/MAINTAINERS b/MAINTAINERS
index c1a18af3593a..5f62904c80bd 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19207,6 +19207,7 @@ F:	Documentation/rust/
 F:	rust/
 F:	samples/rust/
 F:	scripts/*rust*
+F:	tools/testing/selftests/rust/
 K:	\b(?i:rust)\b
 
 RXRPC SOCKETS (AF_RXRPC)
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index f7255969b695..e1504833654d 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -80,6 +80,7 @@ TARGETS += riscv
 TARGETS += rlimits
 TARGETS += rseq
 TARGETS += rtc
+TARGETS += rust
 TARGETS += seccomp
 TARGETS += sgx
 TARGETS += sigaltstack
diff --git a/tools/testing/selftests/rust/Makefile b/tools/testing/selftests/rust/Makefile
new file mode 100644
index 000000000000..fce1584d3bc0
--- /dev/null
+++ b/tools/testing/selftests/rust/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+TEST_PROGS += test_probe_samples.sh
+
+include ../lib.mk
diff --git a/tools/testing/selftests/rust/test_probe_samples.sh b/tools/testing/selftests/rust/test_probe_samples.sh
new file mode 100755
index 000000000000..389d180f14a5
--- /dev/null
+++ b/tools/testing/selftests/rust/test_probe_samples.sh
@@ -0,0 +1,34 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2023 Collabora Ltd
+#
+# This script tests whether the rust sample modules can
+# be added and removed correctly.
+#
+
+DIR="$(dirname "$(readlink -f "$0")")"
+
+source "${DIR}"/../kselftest/ktap_helpers.sh
+
+rust_sample_modules=("rust_minimal" "rust_print")
+
+ktap_print_header
+
+ktap_set_plan "${#rust_sample_modules[@]}"
+
+for sample in "${rust_sample_modules[@]}"; do
+    if ! /sbin/modprobe -n -q "$sample"; then
+        ktap_test_skip "module $sample is not found in /lib/modules/$(uname -r)"
+        continue
+    fi
+
+    if /sbin/modprobe -q "$sample"; then
+        /sbin/modprobe -q -r "$sample"
+        ktap_test_pass "$sample"
+    else
+        ktap_test_fail "$sample"
+    fi
+done
+
+ktap_finished
-- 
2.30.2