selftests: Rename sigaltstack to generic signal

Rename sigaltstack to generic signal directory, to allow adding more
signal tests in the future.

Signed-off-by: Dev Jain <dev.jain@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

1 files changed, 0 insertions, 197 deletions

diff --git a/tools/testing/selftests/sigaltstack/sas.c b/tools/testing/selftests/sigaltstack/sas.c
deleted file mode 100644
index 07227fab1cc9..000000000000
--- a/tools/testing/selftests/sigaltstack/sas.c
+++ /dev/null
@@ -1,197 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Stas Sergeev <stsp@users.sourceforge.net>
- *
- * test sigaltstack(SS_ONSTACK | SS_AUTODISARM)
- * If that succeeds, then swapcontext() can be used inside sighandler safely.
- *
- */
-
-#define _GNU_SOURCE
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/mman.h>
-#include <ucontext.h>
-#include <alloca.h>
-#include <string.h>
-#include <assert.h>
-#include <errno.h>
-#include <sys/auxv.h>
-
-#include "../kselftest.h"
-#include "current_stack_pointer.h"
-
-#ifndef SS_AUTODISARM
-#define SS_AUTODISARM  (1U << 31)
-#endif
-
-#ifndef AT_MINSIGSTKSZ
-#define AT_MINSIGSTKSZ	51
-#endif
-
-static unsigned int stack_size;
-static void *sstack, *ustack;
-static ucontext_t uc, sc;
-static const char *msg = "[OK]\tStack preserved";
-static const char *msg2 = "[FAIL]\tStack corrupted";
-struct stk_data {
-	char msg[128];
-	int flag;
-};
-
-void my_usr1(int sig, siginfo_t *si, void *u)
-{
-	char *aa;
-	int err;
-	stack_t stk;
-	struct stk_data *p;
-
-	if (sp < (unsigned long)sstack ||
-			sp >= (unsigned long)sstack + stack_size) {
-		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);
-	assert(aa);
-	p = (struct stk_data *)(aa + 512);
-	strcpy(p->msg, msg);
-	p->flag = 1;
-	ksft_print_msg("[RUN]\tsignal USR1\n");
-	err = sigaltstack(NULL, &stk);
-	if (err) {
-		ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno));
-		exit(EXIT_FAILURE);
-	}
-	if (stk.ss_flags != SS_DISABLE)
-		ksft_test_result_fail("tss_flags=%x, should be SS_DISABLE\n",
-				stk.ss_flags);
-	else
-		ksft_test_result_pass(
-				"sigaltstack is disabled in sighandler\n");
-	swapcontext(&sc, &uc);
-	ksft_print_msg("%s\n", p->msg);
-	if (!p->flag) {
-		ksft_exit_fail_msg("[RUN]\tAborting\n");
-		exit(EXIT_FAILURE);
-	}
-}
-
-void my_usr2(int sig, siginfo_t *si, void *u)
-{
-	char *aa;
-	struct stk_data *p;
-
-	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) {
-		ksft_test_result_fail("sigaltstack re-used\n");
-		/* corrupt the data */
-		strcpy(p->msg, msg2);
-		/* tell other sighandler that his data is corrupted */
-		p->flag = 0;
-	}
-}
-
-static void switch_fn(void)
-{
-	ksft_print_msg("[RUN]\tswitched to user ctx\n");
-	raise(SIGUSR2);
-	setcontext(&sc);
-}
-
-int main(void)
-{
-	struct sigaction act;
-	stack_t stk;
-	int err;
-
-	/* Make sure more than the required minimum. */
-	stack_size = getauxval(AT_MINSIGSTKSZ) + SIGSTKSZ;
-	ksft_print_msg("[NOTE]\tthe stack size is %u\n", stack_size);
-
-	ksft_print_header();
-	ksft_set_plan(3);
-
-	sigemptyset(&act.sa_mask);
-	act.sa_flags = SA_ONSTACK | SA_SIGINFO;
-	act.sa_sigaction = my_usr1;
-	sigaction(SIGUSR1, &act, NULL);
-	act.sa_sigaction = my_usr2;
-	sigaction(SIGUSR2, &act, NULL);
-	sstack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE,
-		      MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
-	if (sstack == MAP_FAILED) {
-		ksft_exit_fail_msg("mmap() - %s\n", strerror(errno));
-		return EXIT_FAILURE;
-	}
-
-	err = sigaltstack(NULL, &stk);
-	if (err) {
-		ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno));
-		exit(EXIT_FAILURE);
-	}
-	if (stk.ss_flags == SS_DISABLE) {
-		ksft_test_result_pass(
-				"Initial sigaltstack state was SS_DISABLE\n");
-	} else {
-		ksft_exit_fail_msg("Initial sigaltstack state was %x; "
-		       "should have been SS_DISABLE\n", stk.ss_flags);
-		return EXIT_FAILURE;
-	}
-
-	stk.ss_sp = sstack;
-	stk.ss_size = stack_size;
-	stk.ss_flags = SS_ONSTACK | SS_AUTODISARM;
-	err = sigaltstack(&stk, NULL);
-	if (err) {
-		if (errno == EINVAL) {
-			ksft_test_result_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
-			 * test cases like that yet, so just exit and report
-			 * success.
-			 */
-			return 0;
-		} else {
-			ksft_exit_fail_msg(
-				"sigaltstack(SS_ONSTACK | SS_AUTODISARM)  %s\n",
-					strerror(errno));
-			return EXIT_FAILURE;
-		}
-	}
-
-	ustack = mmap(NULL, stack_size, PROT_READ | PROT_WRITE,
-		      MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
-	if (ustack == MAP_FAILED) {
-		ksft_exit_fail_msg("mmap() - %s\n", strerror(errno));
-		return EXIT_FAILURE;
-	}
-	getcontext(&uc);
-	uc.uc_link = NULL;
-	uc.uc_stack.ss_sp = ustack;
-	uc.uc_stack.ss_size = stack_size;
-	makecontext(&uc, switch_fn, 0);
-	raise(SIGUSR1);
-
-	err = sigaltstack(NULL, &stk);
-	if (err) {
-		ksft_exit_fail_msg("sigaltstack() - %s\n", strerror(errno));
-		exit(EXIT_FAILURE);
-	}
-	if (stk.ss_flags != SS_AUTODISARM) {
-		ksft_exit_fail_msg("ss_flags=%x, should be SS_AUTODISARM\n",
-				stk.ss_flags);
-		exit(EXIT_FAILURE);
-	}
-	ksft_test_result_pass(
-			"sigaltstack is still SS_AUTODISARM after signal\n");
-
-	ksft_exit_pass();
-	return 0;
-}