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TOMOYO: Do not call tomoyo_realpath_init unless registered. 

tomoyo_realpath_init() is unconditionally called by security_initcall().
But nobody will use realpath related functions if TOMOYO is not registered.

So, let tomoyo_init() call tomoyo_realpath_init().

This patch saves 4KB of memory allocation if TOMOYO is not registered.

Signed-off-by: Kentaro Takeda <takedakn@nttdata.co.jp>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Toshiharu Harada <haradats@nttdata.co.jp>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Tetsuo Handa 2009-02-21 20:40:50 +09:00 committed by James Morris
parent 0da0a420bb
commit 1581e7ddbd
3 changed files with 5 additions and 6 deletions
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7
security/tomoyo/realpath.c
View File

@ -371,10 +371,8 @@ const struct tomoyo_path_info *tomoyo_save_name(const char *name)
/**
* tomoyo_realpath_init - Initialize realpath related code.
*
* Returns 0.
*/
static int __init tomoyo_realpath_init(void)
void __init tomoyo_realpath_init(void)
{
int i;
@ -388,11 +386,8 @@ static int __init tomoyo_realpath_init(void)
if (tomoyo_find_domain(TOMOYO_ROOT_NAME) != &tomoyo_kernel_domain)
panic("Can't register tomoyo_kernel_domain");
up_read(&tomoyo_domain_list_lock);
return 0;
}
security_initcall(tomoyo_realpath_init);
/* Memory allocated for temporary purpose. */
static atomic_t tomoyo_dynamic_memory_size;

3
security/tomoyo/realpath.h
View File

@ -60,4 +60,7 @@ int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head);
/* Set memory quota. */
int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head);
/* Initialize realpath related code. */
void __init tomoyo_realpath_init(void);
#endif /* !defined(_SECURITY_TOMOYO_REALPATH_H) */

1
security/tomoyo/tomoyo.c
View File

@ -287,6 +287,7 @@ static int __init tomoyo_init(void)
panic("Failure registering TOMOYO Linux");
printk(KERN_INFO "TOMOYO Linux initialized\n");
cred->security = &tomoyo_kernel_domain;
tomoyo_realpath_init();
return 0;
}