Brent Casavant wrote:
> On Wed, 12 Sep 2007, H. Peter Anvin wrote:
>
>> Brent Casavant wrote:
>
>>> http://marc.info/?l=linux-kernel&m=93032806224160&w=2
>> This link talks about file flags handling. I don't see the relevance to
>> this problem at all. However, this is a very long thread, so if there
>> is anything specific that you want to point to, then please elucidate.
>
> Oops, my mistake -- I pasted the wrong URL. I meant this thread, this
> post in particular:
>
> http://marc.info/?l=linux-kernel&m=88937224115435&w=2
>
> Still, O_NOLINK would seem to be a valuable addition, and greatly
> simplify secure temporary file creation.
>
Avoiding -- or at least detecting -- symlink racing with mkdir() is
relatively simple: run mkdir(), make sure you don't get EEXIST or
something like that, lstat() the resulting path -- it should be a
directory with all the right modes and ownerships.
I believe -- but I'm not certain -- that mkdtemp() in glibc will do all
this for you. If not, I would consider that a glibc bug.
-hpa
-
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]
