Re: System reboot triggered by just reading a device file....!?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



since i have gotten more or less similar answers from here, i have talked to some more people privately.

the result is interesting:
if the person i talked to was some sysadmin or related to that (i.e. some person running servers), his opinion was very similar to mine.
if the person was a developer, he didn`t really understand why i have a problem with that. "be careful if you are root" was what i got.


one of the admins gave a good statement, which i liked very much and want to share:

"even if you are root: it`s unix philosophy, that reading is harmless!"

i never thought about that, but i think that`s exactly the point and that`s why i`m feeling uncomfortable with that.

anyway - it cost me some time to find a bug which was none  and the only mistake i did was using a tool for which i was sure did nothing more than reading. so why should i care that i was root ?

need to change my own philosophy now, because i learned that reading isn`t harmless.   ;)

regards
roland




> -----Ursprüngliche Nachricht-----
> Von: "Simon Arlott" <[email protected]>
> Gesendet: 21.11.07 13:30:05
> An: [email protected]
> CC: "Robert Hancock" <[email protected]>, [email protected]
> Betreff: Re: System reboot triggered by just reading a device file....!?


> 
> On Wed, November 21, 2007 00:01, [email protected] wrote:
> >>There is.. it's called "root privileges".
> > yes, true.
> >
> > but - regardless of being a windows app or not - what if you want to take a look on your system as a whole,
> > especially when using some tool which graphically shows how and where your diskspace is being used?  if i
> > let this run from ordinary useraccount it would get lot`s of "permission denied"  and then it`s only telling
> > half of the truth.....
> 
> Such a tool shouldn't need to open any files, whether they're device files or not. Do you expect it to open
> /dev/zero etc. too and read from an infinitely sized "file"?
> 
> >> > i`d wish there would be some fence around this or iTCO_wdt /dev/watchdog not being active after a
> >> default desktop installation.
> 
> Delete it?
> 
> -- 
> Simon Arlott
> 


______________________________________________________________________________
Jetzt neu! Im riesigen WEB.DE Club SmartDrive Dateien freigeben und mit 
Freunden teilen! http://www.freemail.web.de/club/smartdrive_ttc.htm/?mc=021134

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux