Date: Wed, 5 Mar 2008 05:03:05 -0800 From: Jeremy Chadwick <koitsu@freebsd.org> To: Rick van der Zwet <rick@wirelessleiden.nl> Cc: freebsd-stable@freebsd.org Subject: Re: Mapping stat(1) device number/name to partition? Message-ID: <20080305130305.GA25277@eos.sc1.parodius.com> In-Reply-To: <47CE70E0.4000607@wirelessleiden.nl> References: <47CE70E0.4000607@wirelessleiden.nl>
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On Wed, Mar 05, 2008 at 11:07:28AM +0100, Rick van der Zwet wrote: > Hi all, > > I am looking for a way to detect the file system a certain file lives > and next whether this file system is mounted/accessible as writable. [1] > > As stat(1) is helping me out to found out the proper device name/number > of a certain file with the command `stat -f "%d" /etc/motd`, but next > will be the mapping from this device number (st_dev) to the proper > partion/mount point. > > Which handy shell utility program will help me doing this? fstat(1) sounds like it might be of help here. If you're writing a C program for this, the source code is in src/usr.bin/fstat. > [1] Part of getting rid of the annoying motd update failure message, > when /etc is not writable. I know setting update_motd=NO in > /etc/rc.conf will do the trick as well, but I would like to see him > detecting it auto-magically ;-) I haven't seen the "auto-updating motd" feature of FreeBSD since the 3.x days. Are you referring to the "annoyance" where during mergemaster(1), you can nuke your /etc/motd? If so, try IGNORE_MOTD=yes in /etc/mergemaster.rc. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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