Date: Tue, 2 Aug 2005 16:08:12 +0300 From: Vasil Dimov <vd@datamax.bg> To: freebsd-hackers@freebsd.org Subject: Re: [patch] rc.d/tmp (silly mkdir usage) Message-ID: <20050802130812.GA23261@sinanica.bg.datamax> In-Reply-To: <20050802111535.GA2468@britannica.bec.de> References: <51934.68.95.232.238.1122957425.squirrel@68.95.232.238> <20050802062937.GA31485@sinanica.bg.datamax> <42EF5072.30808@freesbie.org> <20050802110632.GB85997@sinanica.bg.datamax> <20050802111535.GA2468@britannica.bec.de>
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--huq684BweRXVnRxX Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Aug 02, 2005 at 01:15:35PM +0200, Joerg Sonnenberger wrote: > On Tue, Aug 02, 2005 at 02:06:32PM +0300, Vasil Dimov wrote: > > On Tue, Aug 02, 2005 at 12:52:34PM +0200, Dario Freni wrote: > > > Vasil Dimov wrote: > > > > Even we can use > > > > if [ -d /tmp -a -w /tmp ] ; then > > > > or (which is equivalent) > > > > if [ -d /tmp ] && [ -w /tmp ] ; then > > > > and save external commands (mkdir) execution and directory > > > > creation/deletion at all. > > >=20 > > > You can't use test -w here. The script is checking if there is a > > > read-only filesystem. -w checks only the file flags (according to the > > > man page, at least). > > >=20 > > That's correct, -w cannot be used to check read-only filesystem. >=20 > Actually, you can. That's not portable behaviour though. >=20 Well, look what I discovered: # mount |grep read-only /usr/ports on /mnt/ar0s2d/usr/ports5 (nullfs, local, read-only) # sh -c '[ -w /mnt/ar0s2d/usr/ports5 ] && echo writeable' # bash -c '[ -w /mnt/ar0s2d/usr/ports5 ] && echo writeable' writeable # One should really not rely on this. --huq684BweRXVnRxX Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- iD8DBQFC73A8Fw6SP/bBpCARAl+RAJ9XxERDhYhKFrPwIisF2seD0cQHKwCgyvGT Iu2nX5+E1GiolRIsZSOFh8Y= =fHyP -----END PGP SIGNATURE----- --huq684BweRXVnRxX--
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