linux-kernel - Re: [PATCH] exporting capability code/name pairs (try #4)

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Message-ID: <47B0F1EE.7040003@ak.jp.nec.com>
Date:	Tue, 12 Feb 2008 10:10:06 +0900
From:	Kohei KaiGai <kaigai@...jp.nec.com>
To:	Alexey Dobriyan <adobriyan@...il.com>
CC:	"Serge E. Hallyn" <serue@...ibm.com>,
	"Andrew G. Morgan" <morgan@...nel.org>, akpm@...l.org,
	jmorris@...ei.org, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH] exporting capability code/name pairs (try #4)

Alexey Dobriyan wrote:
> On Fri, Feb 08, 2008 at 06:42:09PM +0900, Kohei KaiGai wrote:
>> [kaigai@...a ~]$ ls -R /sys/kernel/capability/
>> /sys/kernel/capability/:
>> codes  names  version
>>
>> /sys/kernel/capability/codes:
>> 0  10  12  14  16  18  2   21  23  25  27  29  30  32  4  6  8
>> 1  11  13  15  17  19  20  22  24  26  28  3   31  33  5  7  9
>>
>> /sys/kernel/capability/names:
>> cap_audit_control    cap_kill              cap_net_raw     cap_sys_nice
>> cap_audit_write      cap_lease             cap_setfcap     cap_sys_pacct
>> cap_chown            cap_linux_immutable   cap_setgid      cap_sys_ptrace
>> cap_dac_override     cap_mac_admin         cap_setpcap     cap_sys_rawio
>> cap_dac_read_search  cap_mac_override      cap_setuid      cap_sys_resource
>> cap_fowner           cap_mknod             cap_sys_admin   cap_sys_time
>> cap_fsetid           cap_net_admin         cap_sys_boot    cap_sys_tty_config
>> cap_ipc_lock         cap_net_bind_service  cap_sys_chroot
>> cap_ipc_owner        cap_net_broadcast     cap_sys_module
>> [kaigai@...a ~]$ cat /sys/kernel/capability/codes/20
>> cap_sys_pacct
>> [kaigai@...a ~]$ cat /sys/kernel/capability/names/cap_mknod
>> 27
>> [kaigai@...a ~]$
>> --------------------------------------------------------
>> Any comment please.
> 
> You don't like 1 (one) /proc/capabilities, why?

I have no preference whether a single /proc/capabilities, or the current approach.
However, this idea requires a bit more cost to lookup a capability not sequencially.

Thank,
-- 
OSS Platform Development Division, NEC
KaiGai Kohei <kaigai@...jp.nec.com>
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