Messages in this thread | | | Date | Sun, 6 Jun 2004 01:57:54 -0600 | From | Erik Andersen <> | Subject | Re: clone() <-> getpid() bug in 2.6? |
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On Sat Jun 05, 2004 at 11:07:25PM -0700, Linus Torvalds wrote: > qmail is a piece of crap. The source code is completely unreadable, and it > seems to think that "getpid()" is a good source of random data. Don't ask > me why. > > It literally does things like > > random = now() + (getpid() << 16); [-----------snip-----------]
http://sources.redhat.com/cgi-bin/cvsweb.cgi/~checkout~/libc/sysdeps/posix/tempname.c?rev=1.36&content-type=text/plain&cvsroot=glibc
/* Get some more or less random data. */ random_time_bits = ((uint64_t) tv.tv_usec << 16) ^ tv.tv_sec; value += random_time_bits ^ __getpid ();
etc....
-Erik
-- Erik B. Andersen http://codepoet-consulting.com/ --This message was written using 73% post-consumer electrons-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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