Date: Tue, 5 Oct 2010 17:55:36 +0900 From: Daichi GOTO <daichi@ongs.co.jp> To: Garrett Cooper <gcooper@FreeBSD.org> Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org Subject: Re: fcntl always fails to delete lock file, and PID is always -6464 Message-ID: <20101005175536.a67998ae.daichi@ongs.co.jp> In-Reply-To: <AANLkTin=9MKZGf7RREfcReamdJpCQ56BMn_RKy8eOU0-@mail.gmail.com> References: <20101004123725.65d09b9e.daichi@ongs.co.jp> <AANLkTinZg3n3wDUzQFPv_Gq1o2hswGL3%2B4o0brmTi0-h@mail.gmail.com> <20101004144927.36822f07.daichi@ongs.co.jp> <AANLkTimVcLVdULyAAJD-_TaC5OLj%2BaZVNa=%2BSaiN6PKv@mail.gmail.com> <20101005093826.17432b1e.daichi@ongs.co.jp> <AANLkTi=w5ZAfRymSYbL6X37uyYX17J2dW8LHVcPXZ_%2Bb@mail.gmail.com> <20101005153410.598e4484.daichi@ongs.co.jp> <AANLkTin=9MKZGf7RREfcReamdJpCQ56BMn_RKy8eOU0-@mail.gmail.com>
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On Tue, 5 Oct 2010 01:23:02 -0700 Garrett Cooper <gcooper@FreeBSD.org> wrote: > 2010/10/4 Daichi GOTO <daichi@ongs.co.jp>: > > Thanks nice test tool :) And at last I got it excepting one mystery! > > > > On Mon, 4 Oct 2010 20:17:08 -0700 > > Garrett Cooper <gcooper@FreeBSD.org> wrote: > >> Following through the same process on FreeBSD... > >> > >> Window 1: > >> $ ls -l /tmp/lockfile > >> ls: /tmp/lockfile: No such file or directory > >> $ ./test_fcntl > >> > >> Window 2: > >> > >> $ ls -l /tmp/lockfile > >> -rwsr-x--- 1 garrcoop wheel 0 Oct 4 20:14 /tmp/lockfile > >> $ ./test_fcntl > >> test_fcntl: fcntl: Resource temporarily unavailable > > > > Just my mystery is as follow: > > > > Windows 1: > > % ./test_fcntl > > My pid: 43490 > > > > Windows 2: > > % ls -l /tmp/lockfile > > -r-sr-x--- 1 daichi wheel 0 10月 5 15:02 /tmp/lockfile <--- is it weird, isn't it? > > % ./test_fcntl > > test_fcntl: open: Permission denied > > % > > > > Oops... What's wrong... /tmp is as follow: > > > > % mount | grep tmp > > /dev/ada0s1f on /tmp (ufs, local, noatime, soft-updates) > > % dumpfs /tmp | grep journal > > flags soft-updates+journal > > % > > > > And working scene: > > > > Windows 2: > > % chmod u+w /tmp/lockfile > > % ls -l /tmp/lockfile > > -rwsr-x--- 1 daichi wheel 0 10月 5 15:22 /tmp/lockfile > > % ./test_fcntl > > My pid: 43646 > > test_fcntl: fcntl[1]: Resource temporarily unavailable > > PID=43490 has the lock > > % > > What's your umask and what are the permissions on /tmp? % ll / | grep tmp drwxrwxrwt 14 root wheel 1024 10月 5 17:19 tmp % umask 022 % rm -f test % touch test % ll | grep test -rw-r--r-- 1 daichi wheel 0 10月 5 17:52 test %
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