diff options
Diffstat (limited to 'security/tomoyo/common.c')
| -rw-r--r-- | security/tomoyo/common.c | 54 |
1 files changed, 18 insertions, 36 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index c47d3ce6c733..d8561c30fbf2 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -2111,7 +2111,7 @@ static struct tomoyo_domain_info *tomoyo_find_domain_by_qid 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) + if (ptr->serial != serial) continue; domain = ptr->domain; break; @@ -2130,28 +2130,13 @@ static struct tomoyo_domain_info *tomoyo_find_domain_by_qid * * Waits for access requests which violated policy in enforcing mode. */ -static int tomoyo_poll_query(struct file *file, poll_table *wait) +static unsigned int tomoyo_poll_query(struct file *file, poll_table *wait) { - struct list_head *tmp; - bool found = false; - u8 i; - for (i = 0; i < 2; i++) { - spin_lock(&tomoyo_query_list_lock); - list_for_each(tmp, &tomoyo_query_list) { - struct tomoyo_query *ptr = - list_entry(tmp, typeof(*ptr), list); - if (ptr->answer) - continue; - found = true; - break; - } - spin_unlock(&tomoyo_query_list_lock); - if (found) - return POLLIN | POLLRDNORM; - if (i) - break; - poll_wait(file, &tomoyo_query_wait, wait); - } + if (!list_empty(&tomoyo_query_list)) + return POLLIN | POLLRDNORM; + poll_wait(file, &tomoyo_query_wait, wait); + if (!list_empty(&tomoyo_query_list)) + return POLLIN | POLLRDNORM; return 0; } @@ -2175,8 +2160,6 @@ static void tomoyo_read_query(struct tomoyo_io_buffer *head) spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); - if (ptr->answer) - continue; if (pos++ != head->r.query_index) continue; len = ptr->query_len; @@ -2194,8 +2177,6 @@ static void tomoyo_read_query(struct tomoyo_io_buffer *head) spin_lock(&tomoyo_query_list_lock); list_for_each(tmp, &tomoyo_query_list) { struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); - if (ptr->answer) - continue; if (pos++ != head->r.query_index) continue; /* @@ -2243,8 +2224,10 @@ static int tomoyo_write_answer(struct tomoyo_io_buffer *head) struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list); if (ptr->serial != serial) continue; - if (!ptr->answer) - ptr->answer = answer; + ptr->answer = answer; + /* Remove from tomoyo_query_list. */ + if (ptr->answer) + list_del_init(&ptr->list); break; } spin_unlock(&tomoyo_query_list_lock); @@ -2477,18 +2460,17 @@ int tomoyo_open_control(const u8 type, struct file *file) * tomoyo_poll_control - poll() for /sys/kernel/security/tomoyo/ interface. * * @file: Pointer to "struct file". - * @wait: Pointer to "poll_table". + * @wait: Pointer to "poll_table". Maybe NULL. * - * Waits for read readiness. - * /sys/kernel/security/tomoyo/query is handled by /usr/sbin/tomoyo-queryd and - * /sys/kernel/security/tomoyo/audit is handled by /usr/sbin/tomoyo-auditd. + * Returns POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM if ready to read/write, + * POLLOUT | POLLWRNORM otherwise. */ -int tomoyo_poll_control(struct file *file, poll_table *wait) +unsigned int tomoyo_poll_control(struct file *file, poll_table *wait) { struct tomoyo_io_buffer *head = file->private_data; - if (!head->poll) - return -ENOSYS; - return head->poll(file, wait); + if (head->poll) + return head->poll(file, wait) | POLLOUT | POLLWRNORM; + return POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM; } /** |