From 0849e3ba53c3ef603dffa9758a73e07ed186a937 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Fri, 25 Jun 2010 12:22:09 +0900 Subject: [PATCH] TOMOYO: Add missing poll() hook. Commit 1dae08c "TOMOYO: Add interactive enforcing mode." forgot to register poll() hook. As a result, /usr/sbin/tomoyo-queryd was doing busy loop. Signed-off-by: Tetsuo Handa Signed-off-by: James Morris --- security/tomoyo/common.c | 17 +++++++++++++++++ security/tomoyo/common.h | 2 ++ security/tomoyo/securityfs_if.c | 14 ++++++++++++++ 3 files changed, 33 insertions(+) diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c index 65c18af3ffe5..bff63929e53d 100644 --- a/security/tomoyo/common.c +++ b/security/tomoyo/common.c @@ -1897,6 +1897,23 @@ int tomoyo_open_control(const u8 type, struct file *file) return 0; } +/** + * tomoyo_poll_control - poll() for /sys/kernel/security/tomoyo/ interface. + * + * @file: Pointer to "struct file". + * @wait: Pointer to "poll_table". + * + * Waits for read readiness. + * /sys/kernel/security/tomoyo/query is handled by /usr/sbin/tomoyo-queryd . + */ +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); +} + /** * tomoyo_read_control - read() for /sys/kernel/security/tomoyo/ interface. * diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h index b8b2dac656f1..2ffad6138555 100644 --- a/security/tomoyo/common.h +++ b/security/tomoyo/common.h @@ -705,6 +705,8 @@ void tomoyo_check_profile(void); int tomoyo_open_control(const u8 type, struct file *file); /* Close /sys/kernel/security/tomoyo/ interface. */ int tomoyo_close_control(struct file *file); +/* Poll operation for /sys/kernel/security/tomoyo/ interface. */ +int tomoyo_poll_control(struct file *file, poll_table *wait); /* Read operation for /sys/kernel/security/tomoyo/ interface. */ int tomoyo_read_control(struct file *file, char __user *buffer, const int buffer_len); diff --git a/security/tomoyo/securityfs_if.c b/security/tomoyo/securityfs_if.c index 5eb53510c4a7..9967c1c5c713 100644 --- a/security/tomoyo/securityfs_if.c +++ b/security/tomoyo/securityfs_if.c @@ -37,6 +37,19 @@ static int tomoyo_release(struct inode *inode, struct file *file) return tomoyo_close_control(file); } +/** + * tomoyo_poll - poll() for /proc/ccs/ interface. + * + * @file: Pointer to "struct file". + * @wait: Pointer to "poll_table". + * + * Returns 0 on success, negative value otherwise. + */ +static unsigned int tomoyo_poll(struct file *file, poll_table *wait) +{ + return tomoyo_poll_control(file, wait); +} + /** * tomoyo_read - read() for /sys/kernel/security/tomoyo/ interface. * @@ -79,6 +92,7 @@ static ssize_t tomoyo_write(struct file *file, const char __user *buf, static const struct file_operations tomoyo_operations = { .open = tomoyo_open, .release = tomoyo_release, + .poll = tomoyo_poll, .read = tomoyo_read, .write = tomoyo_write, }; -- 2.20.1