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From: Michael Ellerman <mpe@ellerman.id.au>
To: Aleksa Sarai <cyphar@cyphar.com>,
	Al Viro <viro@zeniv.linux.org.uk>,
	Jeff Layton <jlayton@kernel.org>,
	"J. Bruce Fields" <bfields@fieldses.org>,
	Arnd Bergmann <arnd@arndb.de>,
	David Howells <dhowells@redhat.com>,
	Shuah Khan <shuah@kernel.org>,
	Shuah Khan <skhan@linuxfoundation.org>
Cc: Aleksa Sarai <cyphar@cyphar.com>,
	Eric Biederman <ebiederm@xmission.com>,
	Andy Lutomirski <luto@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Alexei Starovoitov <ast@kernel.org>,
	Kees Cook <keescook@chromium.org>, Jann Horn <jannh@google.com>,
	Christian Brauner <christian@brauner.io>,
	Tycho Andersen <tycho@tycho.ws>,
	David Drysdale <drysdale@google.com>,
	Chanho Min <chanho.min@lge.com>, Oleg Nesterov <oleg@redhat.com>,
	Aleksa Sarai <asarai@suse.de>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	containers@lists.linux-foundation.org,
	linux-alpha@vger.kernel.org, linux-api@vger.kernel.org,
	linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-fsdevel@vger.kernel.org, linux-ia64@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org,
	linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
	linux-s390@vger.kernel.org, linux-sh@vger.kernel.org,
	linux-xtensa@linux-xtensa.org, sparclinux@vger.kernel.org
Subject: Re: [PATCH v9 10/10] selftests: add openat2(2) selftests
Date: Mon, 08 Jul 2019 11:15:35 +1000	[thread overview]
Message-ID: <878st9iax4.fsf@concordia.ellerman.id.au> (raw)
In-Reply-To: <20190706145737.5299-11-cyphar@cyphar.com>

Hi Aleksa,

A few minor comments below.

Aleksa Sarai <cyphar@cyphar.com> writes:
> diff --git a/tools/testing/selftests/openat2/Makefile b/tools/testing/selftests/openat2/Makefile
> new file mode 100644
> index 000000000000..8235a49928f6
> --- /dev/null
> +++ b/tools/testing/selftests/openat2/Makefile
> @@ -0,0 +1,12 @@
> +# SPDX-License-Identifier: GPL-2.0
> +
> +CFLAGS += -Wall -O2 -g
> +TEST_GEN_PROGS := linkmode_test resolve_test rename_attack_test
> +
> +include ../lib.mk
> +
> +$(OUTPUT)/linkmode_test: linkmode_test.c helpers.o
> +$(OUTPUT)/rename_attack_test: rename_attack_test.c helpers.o
> +$(OUTPUT)/resolve_test: resolve_test.c helpers.o

You don't need to tell make that foo depends on foo.c.

Also if you make the dependency be on helpers.c then you won't get an
intermediate helpers.o, and then you don't need to clean it.

So the above three lines could just be:

$(TEST_GEN_PROGS): helpers.c

> +EXTRA_CLEAN = helpers.o $(wildcard /tmp/ksft-openat2-*)

If you follow my advice above you don't need helpers.o in there.

Deleting things from /tmp is also a bit fishy on shared machines, ie. it
will error if those files happen to be owned by another user.

cheers

  reply	other threads:[~2019-07-08  1:15 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-06 14:57 [PATCH v9 00/10] namei: openat2(2) path resolution restrictions Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 01/10] namei: obey trailing magic-link DAC permissions Aleksa Sarai
2019-07-12  4:14   ` Al Viro
2019-07-12  6:36     ` Al Viro
2019-07-12 12:20     ` Aleksa Sarai
2019-07-12 13:10       ` Al Viro
2019-07-14  7:11         ` Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 02/10] procfs: switch magic-link modes to be more sane Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 03/10] open: O_EMPTYPATH: procfs-less file descriptor re-opening Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 04/10] namei: split out nd->dfd handling to dirfd_path_init Aleksa Sarai
2019-07-12  4:20   ` Al Viro
2019-07-12 12:07     ` Aleksa Sarai
2019-07-12 12:12       ` Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 05/10] namei: O_BENEATH-style path resolution flags Aleksa Sarai
2019-07-12  4:33   ` Al Viro
2019-07-12 10:57     ` Aleksa Sarai
2019-07-12 12:39       ` Al Viro
2019-07-12 12:55         ` Al Viro
2019-07-12 13:25           ` Al Viro
2019-07-12 15:00             ` Al Viro
2019-07-13  2:41               ` Al Viro
2019-07-14  3:58                 ` Al Viro
2019-07-16  8:03                   ` Aleksa Sarai
2019-07-14  7:00                 ` Aleksa Sarai
2019-07-14 14:36                   ` Al Viro
2019-07-18  3:17                     ` Aleksa Sarai
2019-07-14 10:31             ` Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 06/10] namei: LOOKUP_IN_ROOT: chroot-like path resolution Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 07/10] namei: aggressively check for nd->root escape on ".." resolution Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 08/10] open: openat2(2) syscall Aleksa Sarai
2019-07-18 14:48   ` Rasmus Villemoes
2019-07-18 15:21     ` Aleksa Sarai
2019-07-18 15:10   ` Arnd Bergmann
2019-07-18 16:12     ` Aleksa Sarai
2019-07-18 21:29       ` Arnd Bergmann
2019-07-19  2:12         ` Dmitry V. Levin
2019-07-19 10:29           ` Christian Brauner
2019-07-19  1:59   ` Dmitry V. Levin
2019-07-19  2:19     ` Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 09/10] kselftest: save-and-restore errno to allow for %m formatting Aleksa Sarai
2019-07-06 14:57 ` [PATCH v9 10/10] selftests: add openat2(2) selftests Aleksa Sarai
2019-07-08  1:15   ` Michael Ellerman [this message]
2019-07-08  5:47     ` Aleksa Sarai
2019-07-12 15:11 ` [PATCH v9 00/10] namei: openat2(2) path resolution restrictions Al Viro
2019-07-12 15:32   ` Aleksa Sarai

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