On Sat, 27 Jul 2002, Sean Conner wrote:
> Date: Sat, 27 Jul 2002 15:04:46 -0400 (EDT)
> From: Sean Conner <sean at conman.org>
> To: openssh-unix-dev at mindrot.org
> Subject: Patch to OpenSSH-3.4p1/monitor_mm.c for Linux 2.0
>
>
> I had to modify the file monitor_mm.c to get the privledge separation to
> work for Linux 2.0.36 (and above) and am passing on the patch to you; if
> there is a better place to send this, please let me know. I've
included a
> new #define (USE_MMAP_DEV_ZERO) to select this patch, but am not including
> the patch to config.h---if there's a better name for it, please, by all
> means, change it.
>
> Thanks for your time and consideration.
>
> Sean
You do not ever close fh; is that intentional?
Best regards,
Wojtek
>
> --- openssh-3.4p1/monitor_mm.c Tue Jun 25 20:29:03 2002
> +++ openssh-3.4p1.new/monitor_mm.c Fri Jul 26 03:00:35 2002
> @@ -85,10 +85,24 @@
> mm->mmalloc = mmalloc;
>
> #ifdef HAVE_MMAP_ANON_SHARED
> +# ifdef USE_MMAP_DEV_ZERO
> + {
> + int fh;
> +
> + fh = open("/dev/zero",O_RDWR);
> + if (fh == -1)
> + fatal("mmap(`/dev/zero'): %s",strerror(errno));
> +
> + address = mmap(NULL,size,PROT_WRITE|PROT_READ,MAP_PRIVATE,fh,0);
> + if (address == MAP_FAILED)
> + fatal("mmap(%lu,%d): %s",(u_long)size,fh,strerror(errno));
> + }
> +# else
> address = mmap(NULL, size, PROT_WRITE|PROT_READ, MAP_ANON|MAP_SHARED,
> -1, 0);
> if (address == MAP_FAILED)
> fatal("mmap(%lu): %s", (u_long)size, strerror(errno));
> +# endif
> #else
> fatal("%s: UsePrivilegeSeparation=yes and Compression=yes not
supported",
> __func__);
>
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