how to update the revision information

Bill Yuan bycn82 at
Thu Jul 5 02:13:06 UTC 2012

Thanks very much,

I found the source code of the loader,  on the it will generate
a vers.c   I changed this script, and manually created this vers.c file. it
will be inlcude in all other sources. and it contains all system version.
 that's my way to change it .  thanks,

On Wed, Jul 4, 2012 at 9:43 PM, Matthew Seaman <matthew at> wrote:

> On 04/07/2012 12:13, Bill Yuan wrote:
> > The blow information can be found when we boot up the system, also can
> use
> > command "uname -v"
> Unfortunately the mailing list software has stripped your attachment.
> For this sort of thing, its good to put your image up on a pastebin site
> and include the link in your e-mail.
> > my question is how can I change this,
> >
> > and I cannot rebuild it ,because on my freebsd, I dont have src anymore .
> Well, the info that uname(1) prints out is generated from the source
> code at compile time.  Recompiling the kernel, or updating the kernel
> via eg. freebsd-update(8) are the only ways to change it.
> If you're asking about the perennial "I just security-patched my system
> with freebsd-update, but uname still shows the old patch-level" thing,
> then yeah.  Unless freebsd-update supplies you with a whole new kernel
> image, which only happens when a security bug involves the kernel, then
> the uname output will not be changed.  It's a flaw, but any solutions
> involving being able to tweak uname settings without changing kernels
> open up a whole can of security worms[*] which are, on the whole, worse
> than living with some mildly outdated data.
>         Cheers,
>         Matthew
> [*] J. Random Blackhat could fake you into thinking the system was
> patched and up to date when in fact it was still vulnerable to
> exploitation.
> --
> Dr Matthew J Seaman MA, D.Phil.
> PGP:

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