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authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>2010-06-25 12:22:09 +0900
committerJames Morris <jmorris@namei.org>2010-08-02 15:34:55 +1000
commit0849e3ba53c3ef603dffa9758a73e07ed186a937 (patch)
tree5aaaa02db9be90287bfcc6e00e48d0b50c18d6cd /security/tomoyo
parente2bf69077acefee5247bb661faac2552d29ba7ba (diff)
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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 <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'security/tomoyo')
-rw-r--r--security/tomoyo/common.c17
-rw-r--r--security/tomoyo/common.h2
-rw-r--r--security/tomoyo/securityfs_if.c14
3 files changed, 33 insertions, 0 deletions
diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index 65c18af3ffe..bff63929e53 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -1898,6 +1898,23 @@ 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".
+ *
+ * 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.
*
* @file: Pointer to "struct file".
diff --git a/security/tomoyo/common.h b/security/tomoyo/common.h
index b8b2dac656f..2ffad613855 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 5eb53510c4a..9967c1c5c71 100644
--- a/security/tomoyo/securityfs_if.c
+++ b/security/tomoyo/securityfs_if.c
@@ -38,6 +38,19 @@ static int tomoyo_release(struct inode *inode, struct file *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.
*
* @file: Pointer to "struct file".
@@ -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,
};