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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2010-02-11 09:41:58 +0900
committerJames Morris <jmorris@namei.org>2010-02-15 09:00:16 +1100
commitbf24fb016c861b7f52be0c36c4cedd3e89afa2e2 (patch)
treef485ca2e70d8305d9aaecf45b5fd929b68b971b2 /security/tomoyo/common.c
parentca0b7df3374c5566468c17f26fa2dfd3fe3c6a37 (diff)
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TOMOYO: Add refcounter on string data.
Add refcounter to "struct tomoyo_name_entry" and replace tomoyo_save_name() with tomoyo_get_name()/tomoyo_put_name() pair so that we can kfree() when garbage collector is added. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/tomoyo/common.c')
-rw-r--r--security/tomoyo/common.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index a53ee059da4..0c7ea51e7a4 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -12,8 +12,8 @@
#include <linux/uaccess.h>
#include <linux/security.h>
#include <linux/hardirq.h>
-#include "realpath.h"
#include "common.h"
+#include "realpath.h"
#include "tomoyo.h"
/* Lock for protecting policy. */
@@ -943,7 +943,9 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
return -EINVAL;
*cp = '\0';
if (!strcmp(data, "COMMENT")) {
- profile->comment = tomoyo_save_name(cp + 1);
+ const struct tomoyo_path_info *old_comment = profile->comment;
+ profile->comment = tomoyo_get_name(cp + 1);
+ tomoyo_put_name(old_comment);
return 0;
}
for (i = 0; i < TOMOYO_MAX_CONTROL_INDEX; i++) {
@@ -1117,7 +1119,7 @@ static int tomoyo_update_manager_entry(const char *manager,
if (!tomoyo_is_correct_path(manager, 1, -1, -1, __func__))
return -EINVAL;
}
- saved_manager = tomoyo_save_name(manager);
+ saved_manager = tomoyo_get_name(manager);
if (!saved_manager)
return -ENOMEM;
if (!is_delete)
@@ -1132,12 +1134,14 @@ static int tomoyo_update_manager_entry(const char *manager,
}
if (!is_delete && error && tomoyo_memory_ok(entry)) {
entry->manager = saved_manager;
+ saved_manager = NULL;
entry->is_domain = is_domain;
list_add_tail_rcu(&entry->list, &tomoyo_policy_manager_list);
entry = NULL;
error = 0;
}
mutex_unlock(&tomoyo_policy_lock);
+ tomoyo_put_name(saved_manager);
kfree(entry);
return error;
}