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authorTetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>2012-03-14 18:27:49 +0900
committerJames Morris <james.l.morris@oracle.com>2012-03-15 12:29:18 +1100
commit6041e8346f2165679c2184cab60db768d6a26a1d (patch)
tree2c4eb032eb851f240c1b70d1afb214a2c661b886 /security/tomoyo/securityfs_if.c
parentf67dabbdde1fe112dfff05d02890f1e0d54117a8 (diff)
downloadlinux-6041e8346f2165679c2184cab60db768d6a26a1d.tar.bz2
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>
Diffstat (limited to 'security/tomoyo/securityfs_if.c')
-rw-r--r--security/tomoyo/securityfs_if.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/security/tomoyo/securityfs_if.c b/security/tomoyo/securityfs_if.c
index 482b2a5f48f0..8592f2fc6ebb 100644
--- a/security/tomoyo/securityfs_if.c
+++ b/security/tomoyo/securityfs_if.c
@@ -157,9 +157,10 @@ static int tomoyo_release(struct inode *inode, struct file *file)
* tomoyo_poll - poll() for /sys/kernel/security/tomoyo/ interface.
*
* @file: Pointer to "struct file".
- * @wait: Pointer to "poll_table".
+ * @wait: Pointer to "poll_table". Maybe NULL.
*
- * Returns 0 on success, negative value otherwise.
+ * Returns POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM if ready to read/write,
+ * POLLOUT | POLLWRNORM otherwise.
*/
static unsigned int tomoyo_poll(struct file *file, poll_table *wait)
{