1 files changed, 49 insertions, 10 deletions

diff --git a/tools/testing/selftests/kselftest.h b/tools/testing/selftests/kselftest.h
index 7b89362da4bfd3..76c2a6945d3e83 100644
--- a/tools/testing/selftests/kselftest.h
+++ b/tools/testing/selftests/kselftest.h
@@ -16,10 +16,12 @@
  * For each test, report any progress, debugging, etc with:
  *
  *     ksft_print_msg(fmt, ...);
+ *     ksft_perror(msg);
  *
  * and finally report the pass/fail/skip/xfail state of the test with one of:
  *
  *     ksft_test_result(condition, fmt, ...);
+ *     ksft_test_result_report(result, fmt, ...);
  *     ksft_test_result_pass(fmt, ...);
  *     ksft_test_result_fail(fmt, ...);
  *     ksft_test_result_skip(fmt, ...);
@@ -39,6 +41,7 @@
  * the program is aborting before finishing all tests):
  *
  *    ksft_exit_fail_msg(fmt, ...);
+ *    ksft_exit_fail_perror(msg);
  *
  */
 #ifndef __KSELFTEST_H
@@ -292,24 +295,47 @@ void ksft_test_result_code(int exit_code, const char *test_name,
 	}
 
 	/* Docs seem to call for double space if directive is absent */
-	if (!directive[0] && msg[0])
+	if (!directive[0] && msg)
 		directive = " #  ";
 
-	va_start(args, msg);
 	printf("%s %u %s%s", tap_code, ksft_test_num(), test_name, directive);
 	errno = saved_errno;
-	vprintf(msg, args);
+	if (msg) {
+		va_start(args, msg);
+		vprintf(msg, args);
+		va_end(args);
+	}
 	printf("\n");
-	va_end(args);
 }
 
-static inline __noreturn int ksft_exit_pass(void)
+/**
+ * ksft_test_result() - Report test success based on truth of condition
+ *
+ * @condition: if true, report test success, otherwise failure.
+ */
+#define ksft_test_result_report(result, fmt, ...) do {		\
+	switch (result) {					\
+	case KSFT_PASS:						\
+		ksft_test_result_pass(fmt, ##__VA_ARGS__);	\
+		break;						\
+	case KSFT_FAIL:						\
+		ksft_test_result_fail(fmt, ##__VA_ARGS__);	\
+		break;						\
+	case KSFT_XFAIL:					\
+		ksft_test_result_xfail(fmt, ##__VA_ARGS__);	\
+		break;						\
+	case KSFT_SKIP:						\
+		ksft_test_result_skip(fmt, ##__VA_ARGS__);	\
+		break;						\
+	} } while (0)
+
+static inline __noreturn void ksft_exit_pass(void)
 {
 	ksft_print_cnts();
 	exit(KSFT_PASS);
 }
 
-static inline __noreturn int ksft_exit_fail(void)
+static inline __noreturn void ksft_exit_fail(void)
 {
 	ksft_print_cnts();
 	exit(KSFT_FAIL);
@@ -336,7 +362,7 @@ static inline __noreturn int ksft_exit_fail(void)
 		  ksft_cnt.ksft_xfail +	\
 		  ksft_cnt.ksft_xskip)
 
-static inline __noreturn __printf(1, 2) int ksft_exit_fail_msg(const char *msg, ...)
+static inline __noreturn __printf(1, 2) void ksft_exit_fail_msg(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;
@@ -351,19 +377,32 @@ static inline __noreturn __printf(1, 2) int ksft_exit_fail_msg(const char *msg,
 	exit(KSFT_FAIL);
 }
 
-static inline __noreturn int ksft_exit_xfail(void)
+static inline __noreturn void ksft_exit_fail_perror(const char *msg)
+{
+#ifndef NOLIBC
+	ksft_exit_fail_msg("%s: %s (%d)\n", msg, strerror(errno), errno);
+#else
+	/*
+	 * nolibc doesn't provide strerror() and it seems
+	 * inappropriate to add one, just print the errno.
+	 */
+	ksft_exit_fail_msg("%s: %d)\n", msg, errno);
+#endif
+}
+
+static inline __noreturn void ksft_exit_xfail(void)
 {
 	ksft_print_cnts();
 	exit(KSFT_XFAIL);
 }
 
-static inline __noreturn int ksft_exit_xpass(void)
+static inline __noreturn void ksft_exit_xpass(void)
 {
 	ksft_print_cnts();
 	exit(KSFT_XPASS);
 }
 
-static inline __noreturn __printf(1, 2) int ksft_exit_skip(const char *msg, ...)
+static inline __noreturn __printf(1, 2) void ksft_exit_skip(const char *msg, ...)
 {
 	int saved_errno = errno;
 	va_list args;