From nobody Mon Feb 9 03:49:04 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 37B782D29AB; Tue, 10 Jun 2025 12:42:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749559359; cv=none; b=YS+NH7+QG5T26mdk58UU6uufqwTmU3C67QT01Xw9lonuUsQHgcNxq2vF10NIru0UeG/6hJ0ee/dAZ0M31fshx9wrS2GdGy+mTHAEBJSc4eyY+Tc2EwwkxIeHl4vE0zM4hdJFSDxFW57cWsRaVRAFDRSYoxFwRqgU3Wts2GkHvAQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749559359; c=relaxed/simple; bh=k95pgC8uYho6a+kXi0z4LRYhCqPs5d/JUrw8wGO3J2U=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=fSs65CyMnk+9eUm+nKxP2ufUEK43YPw8T5NDDDle30k53795GRSGpnwnD+eawmxzLkdhC4wBYX78pnaXAxBgLRV7ntFFn0H/xcMg1SzswE34JudME7G3RHlLSP3hVy+EgNiQESAjvlSTrU2gJVmt+3Bobda4ttQrtEa/hrMpIfU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fsiOLuLe; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fsiOLuLe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41A25C4CEED; Tue, 10 Jun 2025 12:42:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1749559359; bh=k95pgC8uYho6a+kXi0z4LRYhCqPs5d/JUrw8wGO3J2U=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=fsiOLuLeWL0Xc10yYKUqloJZrMK1OEjyoEhpFU4o9QzSidpZAra4hPBB5dBZHhTiD 818/zMhWNXIzcABdmDfAocm2GV76ezuqm30eFM7DmhXckY6byX65N+1evCEqymg+sW lu64hmcgqbkzIE7rhtT7qZTWyjAwtjLRchWyEogktA94XotyEb/R6YAmBGf0oK1qxC ggKRces2B3P1Fe7CTZhEIYRWZJUB2IqqtcUQ3DNcis/3t1tYzAeGSeH0wmlTvCmp3H ETpHkoqFe1JHz+R8IbIQwYSyRGaTeA4EkNLGDYRwJOwuZ+lPfqUgtAB+VRg9oVSicx r/N3xxxb68ZnQ== From: Mark Brown Date: Tue, 10 Jun 2025 13:29:47 +0100 Subject: [PATCH v2 4/4] selftests/nolibc: Add coverage of vfork() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250610-arm64-gcs-vfork-exit-v2-4-929443dfcf82@kernel.org> References: <20250610-arm64-gcs-vfork-exit-v2-0-929443dfcf82@kernel.org> In-Reply-To: <20250610-arm64-gcs-vfork-exit-v2-0-929443dfcf82@kernel.org> To: Willy Tarreau , =?utf-8?q?Thomas_Wei=C3=9Fschuh?= , Christian Brauner , Catalin Marinas , Will Deacon , Shuah Khan Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kselftest@vger.kernel.org, Mark Brown X-Mailer: b4 0.15-dev-c25d1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2649; i=broonie@kernel.org; h=from:subject:message-id; bh=k95pgC8uYho6a+kXi0z4LRYhCqPs5d/JUrw8wGO3J2U=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBoSCgxDdwtoQD5Ra5mGt8UN9d0cGbAAOvD/dkn3A8W VjR+qxGJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCaEgoMQAKCRAk1otyXVSH0KAyB/ wNxl/FZnzIgWNyszdC7wdp+VFWDFsz2+WxB5+A7fijMn1rBBYPdS9gFZ7FyJq76U9gJMF/OX53Dv+n 0w5hk73UhIcowtY/r4Am4WrncCAQFz5TPbLI9JJBN/+O9AiSaY38wRZYEii2mKgpkOK9QQctIGh/ck KPDJsyo0hWQlC9gEx1qSWwa+sRGQNFPJFIUJm3mSxPdN1/ba/yacvFEa/2iHekpWMmE28bsA+eqcfz tvacCJX3aLeHlKjchkXnsBgVlr2chtd1Mtu67XWWLIBGhtJIfoK1eTpRPt3dFHovRdUufo6bAc+J88 9nG2A0178MlZI1YF5zXGIYbnGlfd8b X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Generalise the existing fork() test to also cover the newly added vfork() implementation. Signed-off-by: Mark Brown --- tools/testing/selftests/nolibc/nolibc-test.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/s= elftests/nolibc/nolibc-test.c index dbe13000fb1a..d682434c6442 100644 --- a/tools/testing/selftests/nolibc/nolibc-test.c +++ b/tools/testing/selftests/nolibc/nolibc-test.c @@ -877,7 +877,12 @@ int test_file_stream(void) return 0; } =20 -int test_fork(void) +enum fork_type { + FORK_STANDARD, + FORK_VFORK, +}; + +int test_fork(enum fork_type type) { int status; pid_t pid; @@ -886,14 +891,23 @@ int test_fork(void) fflush(stdout); fflush(stderr); =20 - pid =3D fork(); + switch (type) { + case FORK_STANDARD: + pid =3D fork(); + break; + case FORK_VFORK: + pid =3D vfork(); + break; + default: + return 1; + } =20 switch (pid) { case -1: return 1; =20 case 0: - exit(123); + _exit(123); =20 default: pid =3D waitpid(pid, &status, 0); @@ -1330,7 +1344,7 @@ int run_syscall(int min, int max) CASE_TEST(dup3_m1); tmp =3D dup3(-1, 100, 0); EXPECT_SYSER(1, = tmp, -1, EBADF); if (tmp !=3D -1) close(tmp); break; CASE_TEST(execve_root); EXPECT_SYSER(1, execve("/", (char*[]){ [0]= =3D "/", [1] =3D NULL }, NULL), -1, EACCES); break; CASE_TEST(file_stream); EXPECT_SYSZR(1, test_file_stream()); break; - CASE_TEST(fork); EXPECT_SYSZR(1, test_fork()); break; + CASE_TEST(fork); EXPECT_SYSZR(1, test_fork(FORK_STANDARD));= break; CASE_TEST(getdents64_root); EXPECT_SYSNE(1, test_getdents64("/"), -1);= break; CASE_TEST(getdents64_null); EXPECT_SYSER(1, test_getdents64("/dev/null= "), -1, ENOTDIR); break; CASE_TEST(directories); EXPECT_SYSZR(proc, test_dirent()); break; @@ -1374,6 +1388,7 @@ int run_syscall(int min, int max) CASE_TEST(uname_fault); EXPECT_SYSER(1, uname(NULL), -1, EFAULT); = break; CASE_TEST(unlink_root); EXPECT_SYSER(1, unlink("/"), -1, EISDIR); = break; CASE_TEST(unlink_blah); EXPECT_SYSER(1, unlink("/proc/self/blah"),= -1, ENOENT); break; + CASE_TEST(vfork); EXPECT_SYSZR(1, test_fork(FORK_VFORK)); br= eak; CASE_TEST(wait_child); EXPECT_SYSER(1, wait(&tmp), -1, ECHILD); b= reak; CASE_TEST(waitpid_min); EXPECT_SYSER(1, waitpid(INT_MIN, &tmp, WNO= HANG), -1, ESRCH); break; CASE_TEST(waitpid_child); EXPECT_SYSER(1, waitpid(getpid(), &tmp, WN= OHANG), -1, ECHILD); break; --=20 2.39.5