Re: Accessibility of swap files

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On Wed, Nov 21, 2012 at 10:08 AM, Karel Zak <kzak@xxxxxxxxxx> wrote:
> On Tue, Nov 06, 2012 at 05:25:02PM +0100, Bernhard Voelker wrote:
>> On November 6, 2012 at 4:06 PM mp.lists@xxxxxxx wrote:
>> > As a first idea, it looks, as if such may be implemented, eg. by
>> >      letting swapon [and fstab-based "mounting"] by default not enable a swap
>> > file, if it has non-root access permissions
>>
>> Did you know?
>> The swapon utility issues a warning diagnostic with --verbose:
>>
>>   # ls -l /tmp/swapfile
>>   -rw-r--r-- 1 berny users 134217728 Nov  6 17:03 /tmp/swapfile
>>
>>   # sbin/swapon -v  /tmp/swapfile
>>   swapon /tmp/swapfile
>>   swapon: /tmp/swapfile: insecure permissions 0644, 0600 suggested.
>>   swapon: /tmp/swapfile: insecure file owner 1000, 0 (root) suggested.
>>   swapon: /tmp/swapfile: found swap signature: version 1, page-size 4, same byte
>> order
>>   swapon: /tmp/swapfile: pagesize=4096, swapsize=134217728, devsize=134217728
>
>  this waring is there since year 1999.. so it's really nothing new.

I wonder would be be too noisy to make insecurity warnings enabled by
default,  and add --quiet option to thous who do not want to hear
system complaining about things they know.
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