From owner-cvs-all  Tue Feb  5 17:26:53 2002
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Date: Tue, 5 Feb 2002 17:26:33 -0800
From: Alfred Perlstein <bright@mu.org>
To: Daniel O'Connor <doconnor@gsoft.com.au>
Cc: cvs-all@freebsd.org, cvs-committers@freebsd.org, des@freebsd.org,
	Mark Murray <mark@grondar.za>,
	"Andrey A. Chernov" <ache@nagual.pp.ru>
Subject: Re: cvs commit: src/lib/libpam/modules/pam_unix pam_unix.c
Message-ID: <20020205172633.B59017@elvis.mu.org>
References: <20020205134833.T59017@elvis.mu.org> <XFMail.20020206115521.doconnor@gsoft.com.au>
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* Daniel O'Connor <doconnor@gsoft.com.au> [020205 17:25] wrote:
> 
> On 05-Feb-2002 Alfred Perlstein wrote:
> >> To see the bug, run following test application with "call_pam" set to 1 
> >> and 0
> > 
> > I understand the issue you're bringing up, would it make sense
> > to create/utilize a save/restore random() context function?
> 
> No need to create one..
> setstate() returns the old state which can then be passed back to setstate().

Andrey, can you use this then?

> 
> eg..
> #include <stdlib.h>
> #include <stdio.h>
> 
> void foo(void);
> 
> int
> main(int argc, char **argv) {
>         printf("%ld\n", random());
>         foo();
>         printf("%ld\n", random());
>         printf("%ld\n", random());
>         foo();
>         printf("%ld\n", random());
> }
> 
> void
> foo(void) {
>         char *rndstate;
>         char state[16];
> 
>         rndstate = initstate(123456789, state, sizeof(state));
>         if (rndstate == NULL) {
>                 printf("Unable to reseed\n");
>                 exit(1);
>         }
>         srandomdev();
> 
>         printf("foo - %ld\n", random());
> 
>         setstate(rndstate);
> }
> 
> ---
> Daniel O'Connor software and network engineer
> for Genesis Software - http://www.gsoft.com.au
> "The nice thing about standards is that there
> are so many of them to choose from."
>   -- Andrew Tanenbaum

-- 
-Alfred Perlstein [alfred@freebsd.org]
'Instead of asking why a piece of software is using "1970s technology,"
 start asking why software is ignoring 30 years of accumulated wisdom.'
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