Bind Mount Extensions (ro for --bind)

Bind Mount Extensions (ro for --bind)

[Herbert Pötzl]

Hi Linus!
Hi Andrew!
Hi Marcelo!

a few weeks ago, I posted a patch on lkml, which allows 
ro --bind mounts, at least regarding ...

 - open (read/write/trunc), create
 - link, symlink, unlink
 - mknod (reg/block/char/fifo), mkfifo
 - mkdir, rmdir
 - (f)chown, (f)chmod, utimes
 - ioctl (gen/ext2/ext3/reiser)
 - access, truncate

it doesn't handle update_atime() yet, because Al Viro
hasn't had the time to answer my email, and it doesn't
change current intermezzo code (but this would be easy
to add, because it's almost the same as the vfs_*()s at
least regarding ro --bind mounts)

actually patches are available and tested for 2.4.22-rc2 
and 2.6.0-test3 up to 2.6.0-test3-bk9 ...

I would like to see this or similar code in 2.6 and 2.4 ...
please let me know, what would be required to get them
in, or why you dislike those patches, in case you do ...

TIA,
Herbert

-----
http://www.13thfloor.at/Patches/patch-2.4.22-rc2-bme0.03.diff
http://www.13thfloor.at/Patches/patch-2.4.22-rc2-bme0.03.diff.bz2
http://www.13thfloor.at/Patches/patch-2.6.0-test3-bme0.03.diff
http://www.13thfloor.at/Patches/patch-2.6.0-test3-bme0.03.diff.bz2

Re: Bind Mount Extensions (ro for --bind)

[Shawn]

Pretty cool. Guess I missed that one the first time.

Hope it doesn't bit-rot!

On Thu, 2003-08-21 at 21:47, Herbert Pötzl wrote:
> Hi Linus!
> Hi Andrew!
> Hi Marcelo!
> 
> a few weeks ago, I posted a patch on lkml, which allows 
> ro --bind mounts, at least regarding ...
> 
>  - open (read/write/trunc), create
>  - link, symlink, unlink
>  - mknod (reg/block/char/fifo), mkfifo
>  - mkdir, rmdir
>  - (f)chown, (f)chmod, utimes
>  - ioctl (gen/ext2/ext3/reiser)
>  - access, truncate
> 
> it doesn't handle update_atime() yet, because Al Viro
> hasn't had the time to answer my email, and it doesn't
> change current intermezzo code (but this would be easy
> to add, because it's almost the same as the vfs_*()s at
> least regarding ro --bind mounts)
> 
> actually patches are available and tested for 2.4.22-rc2 
> and 2.6.0-test3 up to 2.6.0-test3-bk9 ...
> 
> I would like to see this or similar code in 2.6 and 2.4 ...
> please let me know, what would be required to get them
> in, or why you dislike those patches, in case you do ...
> 
> TIA,
> Herbert
> 
> -----
> http://www.13thfloor.at/Patches/patch-2.4.22-rc2-bme0.03.diff
> http://www.13thfloor.at/Patches/patch-2.4.22-rc2-bme0.03.diff.bz2
> http://www.13thfloor.at/Patches/patch-2.6.0-test3-bme0.03.diff
> http://www.13thfloor.at/Patches/patch-2.6.0-test3-bme0.03.diff.bz2
> 
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