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TOMOYO: Return appropriate value to poll().

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"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>
This commit is contained in:
Tetsuo Handa
2012-03-14 18:27:49 +09:00
committed by James Morris
parent f67dabbdde
commit 6041e8346f
4 changed files with 26 additions and 43 deletions
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security/tomoyo/common.h
+3 -3
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@@ -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,