Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks

On Fri, Sep 21, 2007 at 04:48:58PM +0200, Miklos Szeredi wrote:
> Ah, OK.  Well, that's what fuse would do with the above change.  So
> you are basically saying, the change is OK, but we want proper
> unprivileged mounts first.

Yes, that and that it should be a mount flag, not a file_system_type
flag.

> I'm sure we don't want it by default.
> 
> For example if user bind mounts / onto /home/user/myroot (with 'nodev'
> of couse), we still don't want mknod to work on that mount, for
> obvious reasons.

True, we'll have to deny it if there is any non-privilegued mount of
the backing device possible.   At this point it's getting rather nasty
and I wonder whether it's really worth it..
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
    • From: Miklos Szeredi <[email protected]>

• References:
  • [patch 0/5] VFS changes
    • From: Miklos Szeredi <[email protected]>
  • [patch 5/5] VFS: allow filesystem to override mknod capability checks
    • From: Miklos Szeredi <[email protected]>
  • Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
    • From: Christoph Hellwig <[email protected]>
  • Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
    • From: Miklos Szeredi <[email protected]>
  • Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
    • From: Christoph Hellwig <[email protected]>
  • Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
    • From: Miklos Szeredi <[email protected]>
  • Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
    • From: Christoph Hellwig <[email protected]>
  • Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
    • From: Miklos Szeredi <[email protected]>

• Prev by Date: Re: [Minor patch] Reduce __print_symbol/sprint_symbol stack usage.
• Next by Date: Re: [PATCH] Reduce __print_symbol/sprint_symbol stack usage.
• Previous by thread: Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
• Next by thread: Re: [patch 5/5] VFS: allow filesystem to override mknod capability checks
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]