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Message-Id: <20240304155928.1818928-3-usama.anjum@collabora.com>
Date: Mon,  4 Mar 2024 20:59:25 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Eric Biederman <ebiederm@...ssion.com>,
	Kees Cook <keescook@...omium.org>,
	Shuah Khan <shuah@...nel.org>,
	Muhammad Usama Anjum <usama.anjum@...labora.com>
Cc: kernel@...labora.com,
	kernel-janitors@...r.kernel.org,
	linux-mm@...ck.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] selftests/exec: conform test to TAP format output

Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
While at it, do minor cleanups like move the declarations of the variables
on top of the function.

Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
---
 .../testing/selftests/exec/recursion-depth.c  | 53 +++++++++----------
 1 file changed, 26 insertions(+), 27 deletions(-)

diff --git a/tools/testing/selftests/exec/recursion-depth.c b/tools/testing/selftests/exec/recursion-depth.c
index 2dbd5bc45b3ed..b2f37d86a5f62 100644
--- a/tools/testing/selftests/exec/recursion-depth.c
+++ b/tools/testing/selftests/exec/recursion-depth.c
@@ -23,45 +23,44 @@
 #include <fcntl.h>
 #include <sys/mount.h>
 #include <unistd.h>
+#include "../kselftest.h"
 
 int main(void)
 {
+	int fd, rv;
+
+	ksft_print_header();
+	ksft_set_plan(1);
+
 	if (unshare(CLONE_NEWNS) == -1) {
 		if (errno == ENOSYS || errno == EPERM) {
-			fprintf(stderr, "error: unshare, errno %d\n", errno);
-			return 4;
+			ksft_test_result_skip("error: unshare, errno %d\n", errno);
+			ksft_finished();
 		}
-		fprintf(stderr, "error: unshare, errno %d\n", errno);
-		return 1;
-	}
-	if (mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL) == -1) {
-		fprintf(stderr, "error: mount '/', errno %d\n", errno);
-		return 1;
+		ksft_exit_fail_msg("error: unshare, errno %d\n", errno);
 	}
+
+	if (mount(NULL, "/", NULL, MS_PRIVATE | MS_REC, NULL) == -1)
+		ksft_exit_fail_msg("error: mount '/', errno %d\n", errno);
+
 	/* Require "exec" filesystem. */
-	if (mount(NULL, "/tmp", "ramfs", 0, NULL) == -1) {
-		fprintf(stderr, "error: mount ramfs, errno %d\n", errno);
-		return 1;
-	}
+	if (mount(NULL, "/tmp", "ramfs", 0, NULL) == -1)
+		ksft_exit_fail_msg("error: mount ramfs, errno %d\n", errno);
 
 #define FILENAME "/tmp/1"
 
-	int fd = creat(FILENAME, 0700);
-	if (fd == -1) {
-		fprintf(stderr, "error: creat, errno %d\n", errno);
-		return 1;
-	}
+	fd = creat(FILENAME, 0700);
+	if (fd == -1)
+		ksft_exit_fail_msg("error: creat, errno %d\n", errno);
+
 #define S "#!" FILENAME "\n"
-	if (write(fd, S, strlen(S)) != strlen(S)) {
-		fprintf(stderr, "error: write, errno %d\n", errno);
-		return 1;
-	}
+	if (write(fd, S, strlen(S)) != strlen(S))
+		ksft_exit_fail_msg("error: write, errno %d\n", errno);
+
 	close(fd);
 
-	int rv = execve(FILENAME, NULL, NULL);
-	if (rv == -1 && errno == ELOOP) {
-		return 0;
-	}
-	fprintf(stderr, "error: execve, rv %d, errno %d\n", rv, errno);
-	return 1;
+	rv = execve(FILENAME, NULL, NULL);
+	ksft_test_result(rv == -1 && errno == ELOOP,
+			 "execve failed as expected (ret %d, errno %d)\n", rv, errno);
+	ksft_finished();
 }
-- 
2.39.2


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