TOMOYO: Return appropriate value to poll().

"struct file_operations"->poll() expects "unsigned int" return value.
All files in /sys/kernel/security/tomoyo/ directory other than
/sys/kernel/security/tomoyo/query and /sys/kernel/security/tomoyo/audit should
return POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM rather than -ENOSYS.
Also, /sys/kernel/security/tomoyo/query and /sys/kernel/security/tomoyo/audit
should return POLLOUT | POLLWRNORM rather than 0 when there is no data to read.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <james.l.morris@oracle.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index 9512222d5581..30fd98369700 100644
--- a/security/tomoyo/common.h
+++ b/security/tomoyo/common.h
@@ -788,7 +788,7 @@ struct tomoyo_acl_param {
 struct tomoyo_io_buffer {
         void (*read) (struct tomoyo_io_buffer *);
         int (*write) (struct tomoyo_io_buffer *);
-        int (*poll) (struct file *file, poll_table *wait);
+        unsigned int (*poll) (struct file *file, poll_table *wait);
         /* Exclusive lock for this structure.   */
         struct mutex io_sem;
         char __user *read_user_buf;
@@ -981,8 +981,8 @@ int tomoyo_path_number_perm(const u8 operation, struct path *path,
                             unsigned long number);
 int tomoyo_path_perm(const u8 operation, struct path *path,
                      const char *target);
-int tomoyo_poll_control(struct file *file, poll_table *wait);
-int tomoyo_poll_log(struct file *file, poll_table *wait);
+unsigned int tomoyo_poll_control(struct file *file, poll_table *wait);
+unsigned int tomoyo_poll_log(struct file *file, poll_table *wait);
 int tomoyo_socket_bind_permission(struct socket *sock, struct sockaddr *addr,
                                   int addr_len);
 int tomoyo_socket_connect_permission(struct socket *sock,