/* The initial domain. */
struct tomoyo_domain_info tomoyo_kernel_domain;
+/**
+ * tomoyo_update_policy - Update an entry for exception policy.
+ *
+ * @new_entry: Pointer to "struct tomoyo_acl_info".
+ * @size: Size of @new_entry in bytes.
+ * @is_delete: True if it is a delete request.
+ * @list: Pointer to "struct list_head".
+ * @check_duplicate: Callback function to find duplicated entry.
+ *
+ * Returns 0 on success, negative value otherwise.
+ *
+ * Caller holds tomoyo_read_lock().
+ */
+int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
+ bool is_delete, struct list_head *list,
+ bool (*check_duplicate) (const struct tomoyo_acl_head
+ *,
+ const struct tomoyo_acl_head
+ *))
+{
+ int error = is_delete ? -ENOENT : -ENOMEM;
+ struct tomoyo_acl_head *entry;
+
+ if (mutex_lock_interruptible(&tomoyo_policy_lock))
+ return -ENOMEM;
+ list_for_each_entry_rcu(entry, list, list) {
+ if (!check_duplicate(entry, new_entry))
+ continue;
+ entry->is_deleted = is_delete;
+ error = 0;
+ break;
+ }
+ if (error && !is_delete) {
+ entry = tomoyo_commit_ok(new_entry, size);
+ if (entry) {
+ list_add_tail_rcu(&entry->list, list);
+ error = 0;
+ }
+ }
+ mutex_unlock(&tomoyo_policy_lock);
+ return error;
+}
+
/**
* tomoyo_update_domain - Update an entry for domain policy.
*
return error;
}
+void tomoyo_check_acl(struct tomoyo_request_info *r,
+ bool (*check_entry) (const struct tomoyo_request_info *,
+ const struct tomoyo_acl_info *))
+{
+ const struct tomoyo_domain_info *domain = r->domain;
+ struct tomoyo_acl_info *ptr;
+
+ list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
+ if (ptr->is_deleted || ptr->type != r->param_type)
+ continue;
+ if (check_entry(r, ptr)) {
+ r->granted = true;
+ return;
+ }
+ }
+ r->granted = false;
+}
+
/*
* tomoyo_domain_list is used for holding list of domains.
* The ->acl_info_list of "struct tomoyo_domain_info" is used for holding
*/
LIST_HEAD(tomoyo_domain_initializer_list);
+static bool tomoyo_same_domain_initializer_entry(const struct tomoyo_acl_head *
+ a,
+ const struct tomoyo_acl_head *
+ b)
+{
+ const struct tomoyo_domain_initializer_entry *p1 =
+ container_of(a, typeof(*p1), head);
+ const struct tomoyo_domain_initializer_entry *p2 =
+ container_of(b, typeof(*p2), head);
+ return p1->is_not == p2->is_not && p1->is_last_name == p2->is_last_name
+ && p1->domainname == p2->domainname
+ && p1->program == p2->program;
+}
+
/**
* tomoyo_update_domain_initializer_entry - Update "struct tomoyo_domain_initializer_entry" list.
*
const bool is_not,
const bool is_delete)
{
- struct tomoyo_domain_initializer_entry *ptr;
struct tomoyo_domain_initializer_entry e = { .is_not = is_not };
int error = is_delete ? -ENOENT : -ENOMEM;
- if (!tomoyo_is_correct_path(program))
+ if (!tomoyo_correct_path(program))
return -EINVAL;
if (domainname) {
- if (!tomoyo_is_domain_def(domainname) &&
- tomoyo_is_correct_path(domainname))
+ if (!tomoyo_domain_def(domainname) &&
+ tomoyo_correct_path(domainname))
e.is_last_name = true;
- else if (!tomoyo_is_correct_domain(domainname))
+ else if (!tomoyo_correct_domain(domainname))
return -EINVAL;
e.domainname = tomoyo_get_name(domainname);
if (!e.domainname)
e.program = tomoyo_get_name(program);
if (!e.program)
goto out;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &tomoyo_domain_initializer_list,
- head.list) {
- if (!tomoyo_is_same_domain_initializer_entry(ptr, &e))
- continue;
- ptr->head.is_deleted = is_delete;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_domain_initializer_entry *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->head.list,
- &tomoyo_domain_initializer_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
+ error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
+ &tomoyo_domain_initializer_list,
+ tomoyo_same_domain_initializer_entry);
out:
tomoyo_put_name(e.domainname);
tomoyo_put_name(e.program);
}
/**
- * tomoyo_is_domain_initializer - Check whether the given program causes domainname reinitialization.
+ * tomoyo_domain_initializer - Check whether the given program causes domainname reinitialization.
*
* @domainname: The name of domain.
* @program: The name of program.
*
* Caller holds tomoyo_read_lock().
*/
-static bool tomoyo_is_domain_initializer(const struct tomoyo_path_info *
+static bool tomoyo_domain_initializer(const struct tomoyo_path_info *
domainname,
const struct tomoyo_path_info *program,
const struct tomoyo_path_info *
*/
LIST_HEAD(tomoyo_domain_keeper_list);
+static bool tomoyo_same_domain_keeper_entry(const struct tomoyo_acl_head *a,
+ const struct tomoyo_acl_head *b)
+{
+ const struct tomoyo_domain_keeper_entry *p1 =
+ container_of(a, typeof(*p1), head);
+ const struct tomoyo_domain_keeper_entry *p2 =
+ container_of(b, typeof(*p2), head);
+ return p1->is_not == p2->is_not && p1->is_last_name == p2->is_last_name
+ && p1->domainname == p2->domainname
+ && p1->program == p2->program;
+}
+
/**
* tomoyo_update_domain_keeper_entry - Update "struct tomoyo_domain_keeper_entry" list.
*
const bool is_not,
const bool is_delete)
{
- struct tomoyo_domain_keeper_entry *ptr;
struct tomoyo_domain_keeper_entry e = { .is_not = is_not };
int error = is_delete ? -ENOENT : -ENOMEM;
- if (!tomoyo_is_domain_def(domainname) &&
- tomoyo_is_correct_path(domainname))
+ if (!tomoyo_domain_def(domainname) &&
+ tomoyo_correct_path(domainname))
e.is_last_name = true;
- else if (!tomoyo_is_correct_domain(domainname))
+ else if (!tomoyo_correct_domain(domainname))
return -EINVAL;
if (program) {
- if (!tomoyo_is_correct_path(program))
+ if (!tomoyo_correct_path(program))
return -EINVAL;
e.program = tomoyo_get_name(program);
if (!e.program)
e.domainname = tomoyo_get_name(domainname);
if (!e.domainname)
goto out;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &tomoyo_domain_keeper_list, head.list) {
- if (!tomoyo_is_same_domain_keeper_entry(ptr, &e))
- continue;
- ptr->head.is_deleted = is_delete;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_domain_keeper_entry *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->head.list,
- &tomoyo_domain_keeper_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
+ error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
+ &tomoyo_domain_keeper_list,
+ tomoyo_same_domain_keeper_entry);
out:
tomoyo_put_name(e.domainname);
tomoyo_put_name(e.program);
}
/**
- * tomoyo_is_domain_keeper - Check whether the given program causes domain transition suppression.
+ * tomoyo_domain_keeper - Check whether the given program causes domain transition suppression.
*
* @domainname: The name of domain.
* @program: The name of program.
*
* Caller holds tomoyo_read_lock().
*/
-static bool tomoyo_is_domain_keeper(const struct tomoyo_path_info *domainname,
+static bool tomoyo_domain_keeper(const struct tomoyo_path_info *domainname,
const struct tomoyo_path_info *program,
const struct tomoyo_path_info *last_name)
{
*/
LIST_HEAD(tomoyo_aggregator_list);
+static bool tomoyo_same_aggregator_entry(const struct tomoyo_acl_head *a,
+ const struct tomoyo_acl_head *b)
+{
+ const struct tomoyo_aggregator_entry *p1 = container_of(a, typeof(*p1),
+ head);
+ const struct tomoyo_aggregator_entry *p2 = container_of(b, typeof(*p2),
+ head);
+ return p1->original_name == p2->original_name &&
+ p1->aggregated_name == p2->aggregated_name;
+}
+
/**
* tomoyo_update_aggregator_entry - Update "struct tomoyo_aggregator_entry" list.
*
const char *aggregated_name,
const bool is_delete)
{
- struct tomoyo_aggregator_entry *ptr;
struct tomoyo_aggregator_entry e = { };
int error = is_delete ? -ENOENT : -ENOMEM;
- if (!tomoyo_is_correct_path(original_name) ||
- !tomoyo_is_correct_path(aggregated_name))
+ if (!tomoyo_correct_path(original_name) ||
+ !tomoyo_correct_path(aggregated_name))
return -EINVAL;
e.original_name = tomoyo_get_name(original_name);
e.aggregated_name = tomoyo_get_name(aggregated_name);
if (!e.original_name || !e.aggregated_name ||
e.aggregated_name->is_patterned) /* No patterns allowed. */
goto out;
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &tomoyo_aggregator_list, head.list) {
- if (!tomoyo_is_same_aggregator_entry(ptr, &e))
- continue;
- ptr->head.is_deleted = is_delete;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_aggregator_entry *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->head.list,
- &tomoyo_aggregator_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
+ error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
+ &tomoyo_aggregator_list,
+ tomoyo_same_aggregator_entry);
out:
tomoyo_put_name(e.original_name);
tomoyo_put_name(e.aggregated_name);
*/
LIST_HEAD(tomoyo_alias_list);
+static bool tomoyo_same_alias_entry(const struct tomoyo_acl_head *a,
+ const struct tomoyo_acl_head *b)
+{
+ const struct tomoyo_alias_entry *p1 = container_of(a, typeof(*p1),
+ head);
+ const struct tomoyo_alias_entry *p2 = container_of(b, typeof(*p2),
+ head);
+ return p1->original_name == p2->original_name &&
+ p1->aliased_name == p2->aliased_name;
+}
+
/**
* tomoyo_update_alias_entry - Update "struct tomoyo_alias_entry" list.
*
const char *aliased_name,
const bool is_delete)
{
- struct tomoyo_alias_entry *ptr;
struct tomoyo_alias_entry e = { };
int error = is_delete ? -ENOENT : -ENOMEM;
- if (!tomoyo_is_correct_path(original_name) ||
- !tomoyo_is_correct_path(aliased_name))
+ if (!tomoyo_correct_path(original_name) ||
+ !tomoyo_correct_path(aliased_name))
return -EINVAL;
e.original_name = tomoyo_get_name(original_name);
e.aliased_name = tomoyo_get_name(aliased_name);
if (!e.original_name || !e.aliased_name ||
e.original_name->is_patterned || e.aliased_name->is_patterned)
goto out; /* No patterns allowed. */
- if (mutex_lock_interruptible(&tomoyo_policy_lock))
- goto out;
- list_for_each_entry_rcu(ptr, &tomoyo_alias_list, head.list) {
- if (!tomoyo_is_same_alias_entry(ptr, &e))
- continue;
- ptr->head.is_deleted = is_delete;
- error = 0;
- break;
- }
- if (!is_delete && error) {
- struct tomoyo_alias_entry *entry =
- tomoyo_commit_ok(&e, sizeof(e));
- if (entry) {
- list_add_tail_rcu(&entry->head.list,
- &tomoyo_alias_list);
- error = 0;
- }
- }
- mutex_unlock(&tomoyo_policy_lock);
+ error = tomoyo_update_policy(&e.head, sizeof(e), is_delete,
+ &tomoyo_alias_list,
+ tomoyo_same_alias_entry);
out:
tomoyo_put_name(e.original_name);
tomoyo_put_name(e.aliased_name);
const struct tomoyo_path_info *saved_domainname;
bool found = false;
- if (!tomoyo_is_correct_domain(domainname))
+ if (!tomoyo_correct_domain(domainname))
return NULL;
saved_domainname = tomoyo_get_name(domainname);
if (!saved_domainname)
}
/* Check execute permission. */
- retval = tomoyo_check_exec_perm(&r, &rn);
+ retval = tomoyo_path_permission(&r, TOMOYO_TYPE_EXECUTE, &rn);
if (retval == TOMOYO_RETRY_REQUEST)
goto retry;
if (retval < 0)
goto out;
- if (tomoyo_is_domain_initializer(old_domain->domainname, &rn, &ln)) {
+ if (tomoyo_domain_initializer(old_domain->domainname, &rn, &ln)) {
/* Transit to the child of tomoyo_kernel_domain domain. */
snprintf(tmp, TOMOYO_EXEC_TMPSIZE - 1,
TOMOYO_ROOT_NAME " " "%s", rn.name);
* initializers because they might start before /sbin/init.
*/
domain = old_domain;
- } else if (tomoyo_is_domain_keeper(old_domain->domainname, &rn, &ln)) {
+ } else if (tomoyo_domain_keeper(old_domain->domainname, &rn, &ln)) {
/* Keep current domain. */
domain = old_domain;
} else {
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff