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TOMOYO: Merge path_group and number_group.

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Use common code for "path_group" and "number_group".

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Tetsuo Handa
2010-06-17 16:55:58 +09:00
committed by James Morris
parent 31845e8c6d
commit 7c2ea22e3c
9 changed files with 199 additions and 282 deletions
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security/tomoyo/memory.c
+44
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@@ -89,6 +89,50 @@ void tomoyo_memory_free(void *ptr)
kfree(ptr);
}
/**
* tomoyo_get_group - Allocate memory for "struct tomoyo_path_group"/"struct tomoyo_number_group".
*
* @group_name: The name of address group.
* @idx: Index number.
*
* Returns pointer to "struct tomoyo_group" on success, NULL otherwise.
*/
struct tomoyo_group *tomoyo_get_group(const char *group_name, const u8 idx)
{
struct tomoyo_group e = { };
struct tomoyo_group *group = NULL;
bool found = false;
if (!tomoyo_correct_word(group_name) || idx >= TOMOYO_MAX_GROUP)
return NULL;
e.group_name = tomoyo_get_name(group_name);
if (!e.group_name)
return NULL;
if (mutex_lock_interruptible(&tomoyo_policy_lock))
goto out;
list_for_each_entry(group, &tomoyo_group_list[idx], list) {
if (e.group_name != group->group_name)
continue;
atomic_inc(&group->users);
found = true;
break;
}
if (!found) {
struct tomoyo_group *entry = tomoyo_commit_ok(&e, sizeof(e));
if (entry) {
INIT_LIST_HEAD(&entry->member_list);
atomic_set(&entry->users, 1);
list_add_tail_rcu(&entry->list,
&tomoyo_group_list[idx]);
group = entry;
found = true;
}
}
mutex_unlock(&tomoyo_policy_lock);
out:
tomoyo_put_name(e.group_name);
return found ? group : NULL;
}
/*
* tomoyo_name_list is used for holding string data used by TOMOYO.
* Since same string data is likely used for multiple times (e.g.