From: Roman Mamedov <rm@romanrm.ru>
To: Gene Czarcinski <gene@czarc.net>
Cc: linux-btrfs@vger.kernel.org
Subject: Re: [PATCH] Btrfs-progs: Exit if not running as root
Date: Fri, 25 Jan 2013 19:00:12 +0600 [thread overview]
Message-ID: <20130125190012.3672dae6@natsu> (raw)
In-Reply-To: <51027AB8.6030901@czarc.net>
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On Fri, 25 Jan 2013 07:29:44 -0500
Gene Czarcinski <gene@czarc.net> wrote:
> After all, I do not need to be root to execute "btrfs --version".
Is that all that comes to mind? I just did
$ dd if=/dev/zero of=fs.img bs=1M count=2048
2048+0 records in
2048+0 records out
2147483648 bytes (2.1 GB) copied, 3.76772 s, 570 MB/s
$ /sbin/mkfs.btrfs fs.img
WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using
fs created label (null) on fs.img
nodesize 4096 leafsize 4096 sectorsize 4096 size 2.00GB
Btrfs Btrfs v0.19
$ /sbin/btrfsck fs.img
checking extents
checking fs roots
checking root refs
found 28672 bytes used err is 0
total csum bytes: 0
total tree bytes: 28672
total fs tree bytes: 8192
btree space waste bytes: 23875
file data blocks allocated: 0
referenced 0
Btrfs Btrfs v0.19
etc, etc.
And after that I could start a QEMU VM or an UserModeLinux kernel image,
passing this fs.img to it as a block device -- all while still being a regular
user, without needing root privileges.
--
With respect,
Roman
~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Stallman had a printer,
with code he could not see.
So he began to tinker,
and set the software free."
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next prev parent reply other threads:[~2013-01-25 13:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-25 11:32 [PATCH] Btrfs-progs: Exit if not running as root Gene Czarcinski
2013-01-25 11:41 ` Stefan Behrens
2013-01-25 12:03 ` Gene Czarcinski
2013-01-25 12:17 ` Stefan Behrens
2013-01-25 13:22 ` Gene Czarcinski
2013-01-25 11:55 ` Roman Mamedov
2013-01-25 12:29 ` Gene Czarcinski
2013-01-25 12:43 ` Hugo Mills
2013-01-25 15:19 ` Brendan Hide
2013-01-25 13:00 ` Roman Mamedov [this message]
2013-01-25 13:52 ` Russell Coker
2013-01-25 15:04 ` Gene Czarcinski
2013-01-25 15:10 ` Gene Czarcinski
2013-01-25 15:30 ` cwillu
2013-01-25 16:06 ` Eric Sandeen
2013-01-26 2:18 ` Russell Coker
2013-01-26 7:46 ` Goffredo Baroncelli
2013-01-25 15:07 ` Eric Sandeen
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