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From: Cyril Hrubis <chrubis@suse.cz>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH v2 2/4] lib/tst_test.c: add .needs_devfs flag
Date: Thu, 16 Aug 2018 15:28:15 +0200	[thread overview]
Message-ID: <20180816132815.GB30369@rei> (raw)
In-Reply-To: <1534409147-29519-2-git-send-email-yangx.jy@cn.fujitsu.com>

Hi!
> We add .needs_devfs flag to prepare a suitable filesystem to test
> device special files and use ext2 instead of tmpfs(because tmpfs
> doesn't support extended attributes) as default filesystem if
> .dev_fs_type is not specified.

Can we do that only if the test temporary directory is not suitable for
creating devices?

There are distributions out there that have /tmp residing on pretty much
normal filesystems, also user can override TMPDIR to point to a path
backed up by a regular fs. In these cases this will slow down these
tests for no good reason.

So I would rather go for:

if tst_test->needs_devfs is set:

* mkdir tst_test->mntpoint if it does not exits
* check if tst_test->mntpoint is suitable for creating devices
* if not, mount some filesystem over it
  - mounting tmpfs without nodev flag should be more than enough
    and if that fails for you, we can fall back to a regular filesystem

-- 
Cyril Hrubis
chrubis@suse.cz

  reply	other threads:[~2018-08-16 13:28 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-04  8:00 [LTP] [PATCH] syscalls/open11.c: Fix the failure of opening device special file Xiao Yang
2018-07-23  1:42 ` Xiao Yang
2018-08-15 11:42 ` Cyril Hrubis
2018-08-16  8:45   ` [LTP] [PATCH v2 1/4] lib/tst_path_has_mnt_flags.c: Factor out tst_path_has_mnt_flags() for new API Xiao Yang
2018-08-16  8:45     ` [LTP] [PATCH v2 2/4] lib/tst_test.c: add .needs_devfs flag Xiao Yang
2018-08-16 13:28       ` Cyril Hrubis [this message]
2018-08-17  4:26         ` Xiao Yang
2018-08-17  4:33         ` [LTP] [PATCH v3 2/2] lib/tst_test.c: Add " Xiao Yang
2018-08-30 14:49           ` Cyril Hrubis
2018-08-31  2:58             ` Xiao Yang
2018-09-01  4:07             ` [LTP] [PATCH v4 " Xiao Yang
2018-08-31 12:31               ` Cyril Hrubis
2018-09-03  2:14                 ` Xiao Yang
2018-09-03 13:01                   ` Cyril Hrubis
2018-08-16  8:45     ` [LTP] [PATCH v2 3/4] syscalls/open11.c: Fix the failure of opening device special files Xiao Yang
2018-08-16  8:45     ` [LTP] [PATCH v2 4/4] syscalls/fsetxattr02.c: Fix the failure of opening device files Xiao Yang

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