Messages in this thread | | | Date | Sun, 20 Apr 2008 15:21:57 -0700 | From | Andrew Morton <> | Subject | Re: 2.6.25 Kernel - Problems with capabilities |
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(cc's added)
> On Sun, 20 Apr 2008 15:09:11 +0100 David <david@unsolicited.net> wrote: > Mike Galbraith wrote: > > On Sat, 2008-04-19 at 19:43 +0100, David wrote: > > > >> I'm wondering if anyone might be able to help with a capability problem > >> I've noticed with .25 My ntp daemon will no longer run as any non-root > >> user, and after some investigation it seems that calls to prctl() are > >> failing. > >> > >> CONFIG_SECURITY_CAPABILITIES=y , so this should work? > >> > >> System is 32 bit x86 based on a venerable SuSE 9.1 distro. > >> > >> Full .config is attached. > >> > >> Thanks > >> David > >> > >> > >> > > > > FWIW, ntpd runs just fine here as user ntp on both my P4 and Q6600 boxen > > with opensuse 10.3. > > > > marge:..tmp/linux-2.6.25 # grep SECUR .config > > CONFIG_EXT2_FS_SECURITY=y > > CONFIG_EXT3_FS_SECURITY=y > > CONFIG_EXT4DEV_FS_SECURITY=y > > CONFIG_SECURITY=y > > CONFIG_SECURITY_NETWORK=y > > CONFIG_SECURITY_NETWORK_XFRM=y > > CONFIG_SECURITY_CAPABILITIES=y > > CONFIG_SECURITY_FILE_CAPABILITIES=y > > CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=0 > > # CONFIG_SECURITY_SELINUX is not set > > marge:..tmp/linux-2.6.25 # grep SECUR /xx > > CONFIG_EXT2_FS_SECURITY=y > > CONFIG_EXT3_FS_SECURITY=y > > CONFIG_REISERFS_FS_SECURITY=y > > # CONFIG_XFS_SECURITY is not set > > CONFIG_SECURITY=y > > CONFIG_SECURITY_NETWORK=y > > # CONFIG_SECURITY_NETWORK_XFRM is not set > > CONFIG_SECURITY_CAPABILITIES=y > > # CONFIG_SECURITY_FILE_CAPABILITIES is not set > > # CONFIG_SECURITY_ROOTPLUG is not set > > CONFIG_SECURITY_DEFAULT_MMAP_MIN_ADDR=0 > > > > I notice I have CONFIG_SECURITY_FILE_CAPABILITIES set, and you don't. I > > have not even the foggiest clue whether that has anything to do with the > > price of tea in china though :) > > > I've just set > > CONFIG_SECURITY_FILE_CAPABILITIES=y > CONFIG_SECURITY_NETWORK_XFRM=y > > to no avail.. I still get > > > 20 Apr 15:04:20 ntpd[15694]: cap_set_proc() failed to drop root > privileges: Invalid argument > > after rebuild & reboot. No massive deal, I'll just run ntpd as root for > now, but there's definitely something funny going on. > > Cheers > David
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