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Message-ID: <CACLa4pu2PWErdjb0=2RZm=6w-wc_ez_5nEXET3hy90h6m6MGYw@mail.gmail.com>
Date: Tue, 27 Mar 2012 16:22:06 -0400
From: Eric Paris <eparis@...isplace.org>
To: gaowanlong@...fujitsu.com
Cc: linux-kernel@...r.kernel.org,
linux-security-module@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
James Morris <jmorris@...ei.org>, sds@...ho.nsa.gov
Subject: Re: [PATCH 2/2] selinux:avc:remove the useless fields in avc_add_callback
I'll get picked up when -rc1 is released and I'm allowed to start
committing for 3.5.
-Eric
On Mon, Mar 26, 2012 at 9:51 AM, Wanlong Gao <gaowanlong@...fujitsu.com> wrote:
> On 03/22/2012 07:58 AM, Wanlong Gao wrote:
>
>> Any comments?
>
>
> Ping?
>
>>
>>
>>> avc_add_callback now just used for registering reset functions
>>> in initcalls, and the callback functions just did reset operations.
>>> So, reducing the arguments to only one event is enough now.
>>>
>>> Signed-off-by: Wanlong Gao <gaowanlong@...fujitsu.com>
>>> ---
>>> security/selinux/avc.c | 32 ++++++--------------------------
>>> security/selinux/include/avc.h | 6 +-----
>>> security/selinux/netif.c | 6 ++----
>>> security/selinux/netnode.c | 6 ++----
>>> security/selinux/netport.c | 6 ++----
>>> security/selinux/ss/services.c | 6 ++----
>>> 6 files changed, 15 insertions(+), 47 deletions(-)
>>>
>>> diff --git a/security/selinux/avc.c b/security/selinux/avc.c
>>> index c301679..fc8acaa 100644
>>> --- a/security/selinux/avc.c
>>> +++ b/security/selinux/avc.c
>>> @@ -65,14 +65,8 @@ struct avc_cache {
>>> };
>>>
>>> struct avc_callback_node {
>>> - int (*callback) (u32 event, u32 ssid, u32 tsid,
>>> - u16 tclass, u32 perms,
>>> - u32 *out_retained);
>>> + int (*callback) (u32 event);
>>> u32 events;
>>> - u32 ssid;
>>> - u32 tsid;
>>> - u16 tclass;
>>> - u32 perms;
>>> struct avc_callback_node *next;
>>> };
>>>
>>> @@ -546,22 +540,12 @@ int avc_audit(u32 ssid, u32 tsid,
>>> * avc_add_callback - Register a callback for security events.
>>> * @callback: callback function
>>> * @events: security events
>>> - * @ssid: source security identifier or %SECSID_WILD
>>> - * @tsid: target security identifier or %SECSID_WILD
>>> - * @tclass: target security class
>>> - * @perms: permissions
>>> *
>>> - * Register a callback function for events in the set @events
>>> - * related to the SID pair (@ssid, @tsid)
>>> - * and the permissions @perms, interpreting
>>> - * @perms based on @tclass. Returns %0 on success or
>>> - * -%ENOMEM if insufficient memory exists to add the callback.
>>> + * Register a callback function for events in the set @events.
>>> + * Returns %0 on success or -%ENOMEM if insufficient memory
>>> + * exists to add the callback.
>>> */
>>> -int __init avc_add_callback(int (*callback)(u32 event, u32 ssid, u32 tsid,
>>> - u16 tclass, u32 perms,
>>> - u32 *out_retained),
>>> - u32 events, u32 ssid, u32 tsid,
>>> - u16 tclass, u32 perms)
>>> +int __init avc_add_callback(int (*callback)(u32 event), u32 events)
>>> {
>>> struct avc_callback_node *c;
>>> int rc = 0;
>>> @@ -574,9 +558,6 @@ int __init avc_add_callback(int (*callback)(u32 event, u32 ssid, u32 tsid,
>>>
>>> c->callback = callback;
>>> c->events = events;
>>> - c->ssid = ssid;
>>> - c->tsid = tsid;
>>> - c->perms = perms;
>>> c->next = avc_callbacks;
>>> avc_callbacks = c;
>>> out:
>>> @@ -716,8 +697,7 @@ int avc_ss_reset(u32 seqno)
>>>
>>> for (c = avc_callbacks; c; c = c->next) {
>>> if (c->events & AVC_CALLBACK_RESET) {
>>> - tmprc = c->callback(AVC_CALLBACK_RESET,
>>> - 0, 0, 0, 0, NULL);
>>> + tmprc = c->callback(AVC_CALLBACK_RESET);
>>> /* save the first error encountered for the return
>>> value and continue processing the callbacks */
>>> if (!rc)
>>> diff --git a/security/selinux/include/avc.h b/security/selinux/include/avc.h
>>> index 47fda96..0ac5c26 100644
>>> --- a/security/selinux/include/avc.h
>>> +++ b/security/selinux/include/avc.h
>>> @@ -88,11 +88,7 @@ u32 avc_policy_seqno(void);
>>> #define AVC_CALLBACK_AUDITDENY_ENABLE 64
>>> #define AVC_CALLBACK_AUDITDENY_DISABLE 128
>>>
>>> -int avc_add_callback(int (*callback)(u32 event, u32 ssid, u32 tsid,
>>> - u16 tclass, u32 perms,
>>> - u32 *out_retained),
>>> - u32 events, u32 ssid, u32 tsid,
>>> - u16 tclass, u32 perms);
>>> +int avc_add_callback(int (*callback)(u32 event), u32 events);
>>>
>>> /* Exported to selinuxfs */
>>> int avc_get_hash_stats(char *page);
>>> diff --git a/security/selinux/netif.c b/security/selinux/netif.c
>>> index 326f22c..47a49d1 100644
>>> --- a/security/selinux/netif.c
>>> +++ b/security/selinux/netif.c
>>> @@ -252,8 +252,7 @@ static void sel_netif_flush(void)
>>> spin_unlock_bh(&sel_netif_lock);
>>> }
>>>
>>> -static int sel_netif_avc_callback(u32 event, u32 ssid, u32 tsid,
>>> - u16 class, u32 perms, u32 *retained)
>>> +static int sel_netif_avc_callback(u32 event)
>>> {
>>> if (event == AVC_CALLBACK_RESET) {
>>> sel_netif_flush();
>>> @@ -292,8 +291,7 @@ static __init int sel_netif_init(void)
>>>
>>> register_netdevice_notifier(&sel_netif_netdev_notifier);
>>>
>>> - err = avc_add_callback(sel_netif_avc_callback, AVC_CALLBACK_RESET,
>>> - SECSID_NULL, SECSID_NULL, SECCLASS_NULL, 0);
>>> + err = avc_add_callback(sel_netif_avc_callback, AVC_CALLBACK_RESET);
>>> if (err)
>>> panic("avc_add_callback() failed, error %d\n", err);
>>>
>>> diff --git a/security/selinux/netnode.c b/security/selinux/netnode.c
>>> index 8636585..28f911c 100644
>>> --- a/security/selinux/netnode.c
>>> +++ b/security/selinux/netnode.c
>>> @@ -297,8 +297,7 @@ static void sel_netnode_flush(void)
>>> spin_unlock_bh(&sel_netnode_lock);
>>> }
>>>
>>> -static int sel_netnode_avc_callback(u32 event, u32 ssid, u32 tsid,
>>> - u16 class, u32 perms, u32 *retained)
>>> +static int sel_netnode_avc_callback(u32 event)
>>> {
>>> if (event == AVC_CALLBACK_RESET) {
>>> sel_netnode_flush();
>>> @@ -320,8 +319,7 @@ static __init int sel_netnode_init(void)
>>> sel_netnode_hash[iter].size = 0;
>>> }
>>>
>>> - ret = avc_add_callback(sel_netnode_avc_callback, AVC_CALLBACK_RESET,
>>> - SECSID_NULL, SECSID_NULL, SECCLASS_NULL, 0);
>>> + ret = avc_add_callback(sel_netnode_avc_callback, AVC_CALLBACK_RESET);
>>> if (ret != 0)
>>> panic("avc_add_callback() failed, error %d\n", ret);
>>>
>>> diff --git a/security/selinux/netport.c b/security/selinux/netport.c
>>> index 7b9eb1f..d353797 100644
>>> --- a/security/selinux/netport.c
>>> +++ b/security/selinux/netport.c
>>> @@ -234,8 +234,7 @@ static void sel_netport_flush(void)
>>> spin_unlock_bh(&sel_netport_lock);
>>> }
>>>
>>> -static int sel_netport_avc_callback(u32 event, u32 ssid, u32 tsid,
>>> - u16 class, u32 perms, u32 *retained)
>>> +static int sel_netport_avc_callback(u32 event)
>>> {
>>> if (event == AVC_CALLBACK_RESET) {
>>> sel_netport_flush();
>>> @@ -257,8 +256,7 @@ static __init int sel_netport_init(void)
>>> sel_netport_hash[iter].size = 0;
>>> }
>>>
>>> - ret = avc_add_callback(sel_netport_avc_callback, AVC_CALLBACK_RESET,
>>> - SECSID_NULL, SECSID_NULL, SECCLASS_NULL, 0);
>>> + ret = avc_add_callback(sel_netport_avc_callback, AVC_CALLBACK_RESET);
>>> if (ret != 0)
>>> panic("avc_add_callback() failed, error %d\n", ret);
>>>
>>> diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
>>> index 185f849..08123cd 100644
>>> --- a/security/selinux/ss/services.c
>>> +++ b/security/selinux/ss/services.c
>>> @@ -3018,8 +3018,7 @@ out:
>>>
>>> static int (*aurule_callback)(void) = audit_update_lsm_rules;
>>>
>>> -static int aurule_avc_callback(u32 event, u32 ssid, u32 tsid,
>>> - u16 class, u32 perms, u32 *retained)
>>> +static int aurule_avc_callback(u32 event)
>>> {
>>> int err = 0;
>>>
>>> @@ -3032,8 +3031,7 @@ static int __init aurule_init(void)
>>> {
>>> int err;
>>>
>>> - err = avc_add_callback(aurule_avc_callback, AVC_CALLBACK_RESET,
>>> - SECSID_NULL, SECSID_NULL, SECCLASS_NULL, 0);
>>> + err = avc_add_callback(aurule_avc_callback, AVC_CALLBACK_RESET);
>>> if (err)
>>> panic("avc_add_callback() failed, error %d\n", err);
>>>
>>
>>
>>
>
>
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