TOMOYO: Allow reading only execute permission.
Policy editor needs to know allow_execute entries in order to build domain
transition tree. Reading all entries is slow. Thus, allow reading only
allow_execute entries.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index 2a5330e..6c68981 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -594,6 +594,10 @@
struct tomoyo_domain_info *domain = NULL;
bool global_pid = false;
+ if (!strcmp(data, "allow_execute")) {
+ head->print_execute_only = true;
+ return true;
+ }
if (sscanf(data, "pid=%u", &pid) == 1 ||
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) {
struct task_struct *p;
@@ -759,6 +763,8 @@
for (bit = head->read_bit; bit < TOMOYO_MAX_PATH_OPERATION; bit++) {
if (!(perm & (1 << bit)))
continue;
+ if (head->print_execute_only && bit != TOMOYO_TYPE_EXECUTE)
+ continue;
/* Print "read/write" instead of "read" and "write". */
if ((bit == TOMOYO_TYPE_READ || bit == TOMOYO_TYPE_WRITE)
&& (perm & (1 << TOMOYO_TYPE_READ_WRITE)))
@@ -926,6 +932,8 @@
= container_of(ptr, struct tomoyo_path_acl, head);
return tomoyo_print_path_acl(head, acl);
}
+ if (head->print_execute_only)
+ return true;
if (acl_type == TOMOYO_TYPE_PATH2_ACL) {
struct tomoyo_path2_acl *acl
= container_of(ptr, struct tomoyo_path2_acl, head);