On Mon, Sep 03, 2007 at 03:18:03AM +0300, Giorgos Keramidas wrote:
> On 2007-09-02 11:18, Tim Kientzle <[EMAIL PROTECTED]> wrote:
> > Yar Tikhiy wrote:
> >> In addition, there are chflags and chmod in /rescue, but there's no
> >> chown in it, so the toolset is a bit incomplete.
> >
> > Oh, my. chown was definitely an oversight. That
> > should have been in there.
>
> Probably because chown is a relatively big binary. If build as a static
> binary here, it ends up being:
>
> $ pwd
> /home/keramida/bsd/src/usr.sbin/chown
> $ make DEBUG_FLAGS='' NO_SHARED=yes all
> [...]
> $ ls -ld chown
> -rwxrwxr-x 1 keramida users - 2297013 Sep 3 03:06 chown
> $ strip -s chown
> $ ls -ld chown
> -rwxrwxr-x 1 keramida users - 550624 Sep 3 03:06 chown
> $
>
> This will get smaller when crunched, but it's still almost 4x the size
> of chmod:
>
> $ pwd
> /home/keramida/bsd/src/bin/chmod
> $ make DEBUG_FLAGS='' NO_SHARED=yes all
> [...]
> $ ls -ld chmod
> -rwxrwxr-x 1 keramida users - 662678 Sep 3 03:08 chmod
> $ strip -s chmod
> $ ls -ld chmod
> -rwxrwxr-x 1 keramida users - 165884 Sep 3 03:08 chmod
> $
>
> Running nm(1) on the binaries, I see that they have the same symbols
> though:
>
> $ nm -S chmod | awk '{print $2,$3,$4}' | sort > /tmp/symbols.chmod
> $ nm -S chown | awk '{print $2,$3,$4}' | sort > /tmp/symbols.chown
> $ diff -u /tmp/symbols.chmod /tmp/symbols.chown
> $
>
> Does this mean that adding chown to the already crunched binary will not
> cause a lot of bloat because of symbols/functions private to chown?
The difference in the static binary sizes is weird, but I don't
have time now to dig the issue deeper, sorry. The rescue binary
grows just slightly when chown is added to it:
-r-xr-xr-x 121 root wheel 3715096 1 сен 10:22 /rescue.old/rescue
-r-xr-xr-x 122 root wheel 3718192 3 сен 17:17 /rescue/rescue
--
Yar
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