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

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Date: Fri, 15 Dec 2023 14:21:32 +0100
From: Laura Nao <laura.nao@...labora.com>
To: Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Wedson Almeida Filho <wedsonaf@...il.com>,
	Shuah Khan <shuah@...nel.org>
Cc: Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...sung.com>,
	Alice Ryhl <aliceryhl@...gle.com>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	kernel@...labora.com,
	Laura Nao <laura.nao@...labora.com>
Subject: [PATCH] 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>
---
 MAINTAINERS                                   |  1 +
 tools/testing/selftests/Makefile              |  1 +
 tools/testing/selftests/rust/.gitignore       |  1 +
 tools/testing/selftests/rust/Makefile         |  8 ++++
 .../selftests/rust/test_probe_samples.sh      | 42 +++++++++++++++++++
 5 files changed, 53 insertions(+)
 create mode 100644 tools/testing/selftests/rust/.gitignore
 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 e2c6187a3ac8..acf283a5d2c0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18847,6 +18847,7 @@ 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 3b2061d1c1a5..26140426c849 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -74,6 +74,7 @@ TARGETS += riscv
 TARGETS += rlimits
 TARGETS += rseq
 TARGETS += rtc
+TARGETS += rust
 TARGETS += seccomp
 TARGETS += sgx
 TARGETS += sigaltstack
diff --git a/tools/testing/selftests/rust/.gitignore b/tools/testing/selftests/rust/.gitignore
new file mode 100644
index 000000000000..e3c5c04d1b19
--- /dev/null
+++ b/tools/testing/selftests/rust/.gitignore
@@ -0,0 +1 @@
+ktap_helpers.sh
diff --git a/tools/testing/selftests/rust/Makefile b/tools/testing/selftests/rust/Makefile
new file mode 100644
index 000000000000..ccaa50f35b5b
--- /dev/null
+++ b/tools/testing/selftests/rust/Makefile
@@ -0,0 +1,8 @@
+
+TEST_PROGS += test_probe_samples.sh
+TEST_GEN_FILES := ktap_helpers.sh
+
+include ../lib.mk
+
+$(OUTPUT)/ktap_helpers.sh:
+	cp $(top_srcdir)/tools/testing/selftests/dt/ktap_helpers.sh $@
diff --git a/tools/testing/selftests/rust/test_probe_samples.sh b/tools/testing/selftests/rust/test_probe_samples.sh
new file mode 100755
index 000000000000..a46550543f73
--- /dev/null
+++ b/tools/testing/selftests/rust/test_probe_samples.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (c) 2023 Collabora Ltd
+#
+# This script tests whether the rust sample modules can
+# be added and removed correctly.
+#
+
+DIR="$(dirname "$(readlink -f "$0")")"
+
+source "${DIR}"/ktap_helpers.sh
+
+rust_sample_modules=("rust_minimal" "rust_print")
+
+KSFT_PASS=0
+KSFT_FAIL=1
+KSFT_SKIP=4
+
+ret="${KSFT_PASS}"
+
+ktap_print_header
+
+ktap_set_plan "${#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 "$sample"
+    else
+        ret="${KSFT_FAIL}"
+        ktap_test_fail "$sample"
+    fi
+done
+
+ktap_print_totals
+exit "${ret}"
-- 
2.30.2