Date: Sat, 29 Jul 2006 15:47:41 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: Jaye Mathisen <mrcpu@mathisen.org> Cc: hackers@freebsd.org Subject: Re: fdescfs functional in 6.1? Message-ID: <20060729204741.GD15827@dan.emsphone.com> In-Reply-To: <20060729061653.GM15569@main.mathisen.org> References: <20060729034359.GL15569@main.mathisen.org> <20060729041848.GC15827@dan.emsphone.com> <20060729061653.GM15569@main.mathisen.org>
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In the last episode (Jul 28), Jaye Mathisen said: > On Fri, Jul 28, 2006 at 11:18:48PM -0500, Dan Nelson wrote: > > In the last episode (Jul 28), Jaye Mathisen said: > > > s2# mount -t fdescfs fdescfs /dev/fd > > > s2# ls -l /dev/fd > > > total 16 > > > crw--w---- 1 root tty 5, 1 Jul 28 18:01 0 > > > crw--w---- 1 root tty 5, 1 Jul 28 18:01 1 > > > crw--w---- 1 root tty 5, 1 Jul 28 18:01 2 > > > d-w------- 1 mailnull mailnull 512 Jul 23 00:01 3 > > > d--------- 1 root wheel 512 Jul 25 03:25 4 > > > s2# umount /dev/fd > > > > > > This thing is all over the map.. permissions changed, a *directory* > > > for fd's 3 and 4? > > > > What do you expect ls to open to print a *directory* listing? :) > > > > fd's 0, 1, and 2 are /dev/tty, and the permissions look fine. > > > > fd 3 is your current directory (so I guess you're in some smtp-related > > directory?), and fd 4 is the directory on the commandline (/dev/fd). > > > > I guess I just expected it to print all character device entries for > the file descriptors open by my process. fdescfs prints all file desriptors open by your process, and displays the correct info for each of them. > Kind of like the old /dev/fd/1 /dev/fd/2 directories used to be under > MAKEDEV... Before devfs, /dev/fd was populated with dummy entries from 0 to 63 and running ls on the directory had no correspondence with what your process actually had open. -- Dan Nelson dnelson@allantgroup.com
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