selftests: sigaltstack: convert to use TAP13 ksft framework

Convert to use TAP13 ksft framework to output results.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

tools/testing/selftests/sigaltstack/sas.c

@@ -17,6 +17,8 @@
 #include <assert.h>
 #include <errno.h>
 
+#include "../kselftest.h"
+
 #ifndef SS_AUTODISARM
 #define SS_AUTODISARM  (1U << 31)
 #endif
@@ -41,8 +43,7 @@ void my_usr1(int sig, siginfo_t *si, void *u)
 
 	if (sp < (unsigned long)sstack ||
 			sp >= (unsigned long)sstack + SIGSTKSZ) {
-		printf("[FAIL]\tSP is not on sigaltstack\n");
-		exit(EXIT_FAILURE);
+		ksft_exit_fail_msg("SP is not on sigaltstack\n");
 	}
 	/* put some data on stack. other sighandler will try to overwrite it */
 	aa = alloca(1024);
@@ -50,21 +51,22 @@ void my_usr1(int sig, siginfo_t *si, void *u)
 	p = (struct stk_data *)(aa + 512);
 	strcpy(p->msg, msg);
 	p->flag = 1;
-	printf("[RUN]\tsignal USR1\n");
+	ksft_print_msg("[RUN]\tsignal USR1\n");
 	err = sigaltstack(NULL, &stk);
 	if (err) {
-		perror("[FAIL]\tsigaltstack()");
+		ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno));
 		exit(EXIT_FAILURE);
 	}
 	if (stk.ss_flags != SS_DISABLE)
-		printf("[FAIL]\tss_flags=%x, should be SS_DISABLE\n",
+		ksft_test_result_fail("tss_flags=%x, should be SS_DISABLE\n",
 				stk.ss_flags);
 	else
-		printf("[OK]\tsigaltstack is disabled in sighandler\n");
+		ksft_test_result_pass(
+				"sigaltstack is disabled in sighandler\n");
 	swapcontext(&sc, &uc);
-	printf("%s\n", p->msg);
+	ksft_print_msg("%s\n", p->msg);
 	if (!p->flag) {
-		printf("[RUN]\tAborting\n");
+		ksft_exit_skip("[RUN]\tAborting\n");
 		exit(EXIT_FAILURE);
 	}
 }
@@ -74,13 +76,13 @@ void my_usr2(int sig, siginfo_t *si, void *u)
 	char *aa;
 	struct stk_data *p;
 
-	printf("[RUN]\tsignal USR2\n");
+	ksft_print_msg("[RUN]\tsignal USR2\n");
 	aa = alloca(1024);
 	/* dont run valgrind on this */
 	/* try to find the data stored by previous sighandler */
 	p = memmem(aa, 1024, msg, strlen(msg));
 	if (p) {
-		printf("[FAIL]\tsigaltstack re-used\n");
+		ksft_test_result_fail("sigaltstack re-used\n");
 		/* corrupt the data */
 		strcpy(p->msg, msg2);
 		/* tell other sighandler that his data is corrupted */
@@ -90,7 +92,7 @@ void my_usr2(int sig, siginfo_t *si, void *u)
 
 static void switch_fn(void)
 {
-	printf("[RUN]\tswitched to user ctx\n");
+	ksft_print_msg("[RUN]\tswitched to user ctx\n");
 	raise(SIGUSR2);
 	setcontext(&sc);
 }
@@ -101,6 +103,8 @@ int main(void)
 	stack_t stk;
 	int err;
 
+	ksft_print_header();
+
 	sigemptyset(&act.sa_mask);
 	act.sa_flags = SA_ONSTACK | SA_SIGINFO;
 	act.sa_sigaction = my_usr1;
@@ -110,19 +114,20 @@ int main(void)
 	sstack = mmap(NULL, SIGSTKSZ, PROT_READ | PROT_WRITE,
 		      MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
 	if (sstack == MAP_FAILED) {
-		perror("mmap()");
+		ksft_exit_fail_msg("mmap() - %s\n", strerror(errno));
 		return EXIT_FAILURE;
 	}
 
 	err = sigaltstack(NULL, &stk);
 	if (err) {
-		perror("[FAIL]\tsigaltstack()");
+		ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno));
 		exit(EXIT_FAILURE);
 	}
 	if (stk.ss_flags == SS_DISABLE) {
-		printf("[OK]\tInitial sigaltstack state was SS_DISABLE\n");
+		ksft_test_result_pass(
+				"Initial sigaltstack state was SS_DISABLE\n");
 	} else {
-		printf("[FAIL]\tInitial sigaltstack state was %x; "
+		ksft_exit_fail_msg("Initial sigaltstack state was %x; "
 		       "should have been SS_DISABLE\n", stk.ss_flags);
 		return EXIT_FAILURE;
 	}
@@ -133,7 +138,8 @@ int main(void)
 	err = sigaltstack(&stk, NULL);
 	if (err) {
 		if (errno == EINVAL) {
-			printf("[NOTE]\tThe running kernel doesn't support SS_AUTODISARM\n");
+			ksft_exit_skip(
+				"[NOTE]\tThe running kernel doesn't support SS_AUTODISARM\n");
 			/*
 			 * If test cases for the !SS_AUTODISARM variant were
 			 * added, we could still run them.  We don't have any
@@ -142,7 +148,9 @@ int main(void)
 			 */
 			return 0;
 		} else {
-			perror("[FAIL]\tsigaltstack(SS_ONSTACK | SS_AUTODISARM)");
+			ksft_exit_fail_msg(
+				"sigaltstack(SS_ONSTACK | SS_AUTODISARM)  %s\n",
+					strerror(errno));
 			return EXIT_FAILURE;
 		}
 	}
@@ -150,7 +158,7 @@ int main(void)
 	ustack = mmap(NULL, SIGSTKSZ, PROT_READ | PROT_WRITE,
 		      MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
 	if (ustack == MAP_FAILED) {
-		perror("mmap()");
+		ksft_exit_fail_msg("mmap() - %s\n", strerror(errno));
 		return EXIT_FAILURE;
 	}
 	getcontext(&uc);
@@ -162,16 +170,17 @@ int main(void)
 
 	err = sigaltstack(NULL, &stk);
 	if (err) {
-		perror("[FAIL]\tsigaltstack()");
+		ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno));
 		exit(EXIT_FAILURE);
 	}
 	if (stk.ss_flags != SS_AUTODISARM) {
-		printf("[FAIL]\tss_flags=%x, should be SS_AUTODISARM\n",
+		ksft_exit_fail_msg("ss_flags=%x, should be SS_AUTODISARM\n",
 				stk.ss_flags);
 		exit(EXIT_FAILURE);
 	}
-	printf("[OK]\tsigaltstack is still SS_AUTODISARM after signal\n");
+	ksft_test_result_pass(
+			"sigaltstack is still SS_AUTODISARM after signal\n");
 
-	printf("[OK]\tTest passed\n");
+	ksft_exit_pass();
 	return 0;
 }