[Pkg-cups-devel] Bug#380640: cupsys - blocks on read of /dev/random
Kenshi Muto
kmuto at debian.org
Mon Jul 31 15:04:01 UTC 2006
At Mon, 31 Jul 2006 13:58:20 +0000,
Bastian Blank wrote:
> Package: cupsys
> Version: 1.2.1-3
> Severity: important
>
> cupsd blocks if it can't read enough from /dev/random on startup.
Could you tell me how to reproduce it?
I think the relational code is in scheduler/cert.c:
-------------------------------
if ((fp = cupsFileOpen("/dev/urandom", "rb")) == NULL)
{
/*
* Get the time in usecs and use it as the initial seed...
*/
gettimeofday(&tod, NULL);
seed = (unsigned)(tod.tv_sec + tod.tv_usec);
}
else
{
/*
* Read 4 random characters from the random device and use
* them as the seed...
*/
seed = cupsFileGetChar(fp);
seed = (seed << 8) | cupsFileGetChar(fp);
seed = (seed << 8) | cupsFileGetChar(fp);
seed = (seed << 8) | cupsFileGetChar(fp);
cupsFileClose(fp);
}
-------------------------------
Thanks,
--
Kenshi Muto
kmuto at debian.org
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