diff options
Diffstat (limited to 'security/tomoyo/common.c')
| -rw-r--r-- | security/tomoyo/common.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index d41900de8a69..610b535108af 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -963,6 +963,9 @@ static bool tomoyo_manager(void) return found; } +static struct tomoyo_domain_info *tomoyo_find_domain_by_qid +(unsigned int serial); + /** * tomoyo_select_domain - Parse select command. * @@ -996,6 +999,8 @@ static bool tomoyo_select_domain(struct tomoyo_io_buffer *head, } else if (!strncmp(data, "domain=", 7)) { if (tomoyo_domain_def(data + 7)) domain = tomoyo_find_domain(data + 7); + } else if (sscanf(data, "Q=%u", &pid) == 1) { + domain = tomoyo_find_domain_by_qid(pid); } else return false; head->w.domain = domain; @@ -1891,6 +1896,7 @@ static DECLARE_WAIT_QUEUE_HEAD(tomoyo_answer_wait); /* Structure for query. */ struct tomoyo_query { struct list_head list; + struct tomoyo_domain_info *domain; char *query; size_t query_len; unsigned int serial; @@ -2041,6 +2047,7 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...) goto out; } len = tomoyo_round2(entry.query_len); + entry.domain = r->domain; spin_lock(&tomoyo_query_list_lock); if (tomoyo_memory_quota[TOMOYO_MEMORY_QUERY] && tomoyo_memory_used[TOMOYO_MEMORY_QUERY] + len @@ -2088,6 +2095,29 @@ out: } /** + * tomoyo_find_domain_by_qid - Get domain by query id. + * + * @serial: Query ID assigned by tomoyo_supervisor(). + * + * Returns pointer to "struct tomoyo_domain_info" if found, NULL otherwise. + */ +static struct tomoyo_domain_info *tomoyo_find_domain_by_qid +(unsigned int serial) +{ + struct tomoyo_query *ptr; + struct tomoyo_domain_info *domain = NULL; + spin_lock(&tomoyo_query_list_lock); + list_for_each_entry(ptr, &tomoyo_query_list, list) { + if (ptr->serial != serial || ptr->answer) + continue; + domain = ptr->domain; + break; + } + spin_unlock(&tomoyo_query_list_lock); + return domain; +} + +/** * tomoyo_poll_query - poll() for /sys/kernel/security/tomoyo/query. * * @file: Pointer to "struct file". |