diff options
Diffstat (limited to 'security/tomoyo/path_group.c')
| -rw-r--r-- | security/tomoyo/path_group.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/security/tomoyo/path_group.c b/security/tomoyo/path_group.c deleted file mode 100644 index c988041c8e1c..000000000000 --- a/security/tomoyo/path_group.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * security/tomoyo/path_group.c - * - * Copyright (C) 2005-2009 NTT DATA CORPORATION - */ - -#include <linux/slab.h> -#include "common.h" -/* The list for "struct ccs_path_group". */ -LIST_HEAD(tomoyo_path_group_list); - -/** - * tomoyo_get_path_group - Allocate memory for "struct tomoyo_path_group". - * - * @group_name: The name of pathname group. - * - * Returns pointer to "struct tomoyo_path_group" on success, NULL otherwise. - */ -struct tomoyo_path_group *tomoyo_get_path_group(const char *group_name) -{ - struct tomoyo_path_group *entry = NULL; - struct tomoyo_path_group *group = NULL; - const struct tomoyo_path_info *saved_group_name; - int error = -ENOMEM; - if (!tomoyo_is_correct_path(group_name, 0, 0, 0) || - !group_name[0]) - return NULL; - saved_group_name = tomoyo_get_name(group_name); - if (!saved_group_name) - return NULL; - entry = kzalloc(sizeof(*entry), GFP_NOFS); - if (mutex_lock_interruptible(&tomoyo_policy_lock)) - goto out; - list_for_each_entry_rcu(group, &tomoyo_path_group_list, list) { - if (saved_group_name != group->group_name) - continue; - atomic_inc(&group->users); - error = 0; - break; - } - if (error && tomoyo_memory_ok(entry)) { - INIT_LIST_HEAD(&entry->member_list); - entry->group_name = saved_group_name; - saved_group_name = NULL; - atomic_set(&entry->users, 1); - list_add_tail_rcu(&entry->list, &tomoyo_path_group_list); - group = entry; - entry = NULL; - error = 0; - } - mutex_unlock(&tomoyo_policy_lock); - out: - tomoyo_put_name(saved_group_name); - kfree(entry); - return !error ? group : NULL; -} - -/** - * tomoyo_write_path_group_policy - Write "struct tomoyo_path_group" list. - * - * @data: String to parse. - * @is_delete: True if it is a delete request. - * - * Returns 0 on success, nagative value otherwise. - */ -int tomoyo_write_path_group_policy(char *data, const bool is_delete) -{ - struct tomoyo_path_group *group; - struct tomoyo_path_group_member *member; - struct tomoyo_path_group_member e = { }; - int error = is_delete ? -ENOENT : -ENOMEM; - char *w[2]; - if (!tomoyo_tokenize(data, w, sizeof(w)) || !w[1][0]) - return -EINVAL; - group = tomoyo_get_path_group(w[0]); - if (!group) - return -ENOMEM; - e.member_name = tomoyo_get_name(w[1]); - if (!e.member_name) - goto out; - if (mutex_lock_interruptible(&tomoyo_policy_lock)) - goto out; - list_for_each_entry_rcu(member, &group->member_list, list) { - if (member->member_name != e.member_name) - continue; - member->is_deleted = is_delete; - error = 0; - break; - } - if (!is_delete && error) { - struct tomoyo_path_group_member *entry = - tomoyo_commit_ok(&e, sizeof(e)); - if (entry) { - list_add_tail_rcu(&entry->list, &group->member_list); - error = 0; - } - } - mutex_unlock(&tomoyo_policy_lock); - out: - tomoyo_put_name(e.member_name); - tomoyo_put_path_group(group); - return error; -} - -/** - * tomoyo_read_path_group_policy - Read "struct tomoyo_path_group" list. - * - * @head: Pointer to "struct tomoyo_io_buffer". - * - * Returns true on success, false otherwise. - * - * Caller holds tomoyo_read_lock(). - */ -bool tomoyo_read_path_group_policy(struct tomoyo_io_buffer *head) -{ - struct list_head *gpos; - struct list_head *mpos; - list_for_each_cookie(gpos, head->read_var1, &tomoyo_path_group_list) { - struct tomoyo_path_group *group; - group = list_entry(gpos, struct tomoyo_path_group, list); - list_for_each_cookie(mpos, head->read_var2, - &group->member_list) { - struct tomoyo_path_group_member *member; - member = list_entry(mpos, - struct tomoyo_path_group_member, - list); - if (member->is_deleted) - continue; - if (!tomoyo_io_printf(head, TOMOYO_KEYWORD_PATH_GROUP - "%s %s\n", - group->group_name->name, - member->member_name->name)) - return false; - } - } - return true; -} - -/** - * tomoyo_path_matches_group - Check whether the given pathname matches members of the given pathname group. - * - * @pathname: The name of pathname. - * @group: Pointer to "struct tomoyo_path_group". - * @may_use_pattern: True if wild card is permitted. - * - * Returns true if @pathname matches pathnames in @group, false otherwise. - * - * Caller holds tomoyo_read_lock(). - */ -bool tomoyo_path_matches_group(const struct tomoyo_path_info *pathname, - const struct tomoyo_path_group *group, - const bool may_use_pattern) -{ - struct tomoyo_path_group_member *member; - bool matched = false; - list_for_each_entry_rcu(member, &group->member_list, list) { - if (member->is_deleted) - continue; - if (!member->member_name->is_patterned) { - if (tomoyo_pathcmp(pathname, member->member_name)) - continue; - } else if (may_use_pattern) { - if (!tomoyo_path_matches_pattern(pathname, - member->member_name)) - continue; - } else - continue; - matched = true; - break; - } - return matched; -} |