switch mqueue syscalls to fget_light() (515e0d66) · Commits · e / devices / android_kernel_xiaomi_markw

ipc/mqueue.c

+14 −12

Original line number	Diff line number	Diff line
		@@ -953,7 +953,7 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,
		ktime_t expires, *timeout = NULL;
		struct timespec ts;
		struct posix_msg_tree_node *new_leaf = NULL;
		int ret = 0;
		int ret = 0, fput_needed;

		if (u_abs_timeout) {
		int res = prepare_timeout(u_abs_timeout, &expires, &ts);
		@@ -967,7 +967,7 @@ SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes, const char __user *, u_msg_ptr,

		audit_mq_sendrecv(mqdes, msg_len, msg_prio, timeout ? &ts : NULL);

		filp = fget(mqdes);
		filp = fget_light(mqdes, &fput_needed);
		if (unlikely(!filp)) {
		ret = -EBADF;
		goto out;
		@@ -1056,7 +1056,7 @@ out_free:
		if (ret)
		free_msg(msg_ptr);
		out_fput:
		fput(filp);
		fput_light(filp, fput_needed);
		out:
		return ret;
		}
		@@ -1074,6 +1074,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
		ktime_t expires, *timeout = NULL;
		struct timespec ts;
		struct posix_msg_tree_node *new_leaf = NULL;
		int fput_needed;

		if (u_abs_timeout) {
		int res = prepare_timeout(u_abs_timeout, &expires, &ts);
		@@ -1084,7 +1085,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,

		audit_mq_sendrecv(mqdes, msg_len, 0, timeout ? &ts : NULL);

		filp = fget(mqdes);
		filp = fget_light(mqdes, &fput_needed);
		if (unlikely(!filp)) {
		ret = -EBADF;
		goto out;
		@@ -1160,7 +1161,7 @@ SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes, char __user *, u_msg_ptr,
		free_msg(msg_ptr);
		}
		out_fput:
		fput(filp);
		fput_light(filp, fput_needed);
		out:
		return ret;
		}
		@@ -1173,7 +1174,7 @@ out:
		SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
		const struct sigevent __user *, u_notification)
		{
		int ret;
		int ret, fput_needed;
		struct file *filp;
		struct sock *sock;
		struct inode *inode;
		@@ -1220,13 +1221,13 @@ SYSCALL_DEFINE2(mq_notify, mqd_t, mqdes,
		skb_put(nc, NOTIFY_COOKIE_LEN);
		/* and attach it to the socket */
		retry:
		filp = fget(notification.sigev_signo);
		filp = fget_light(notification.sigev_signo, &fput_needed);
		if (!filp) {
		ret = -EBADF;
		goto out;
		}
		sock = netlink_getsockbyfilp(filp);
		fput(filp);
		fput_light(filp, fput_needed);
		if (IS_ERR(sock)) {
		ret = PTR_ERR(sock);
		sock = NULL;
		@@ -1245,7 +1246,7 @@ retry:
		}
		}

		filp = fget(mqdes);
		filp = fget_light(mqdes, &fput_needed);
		if (!filp) {
		ret = -EBADF;
		goto out;
		@@ -1292,7 +1293,7 @@ retry:
		}
		spin_unlock(&info->lock);
		out_fput:
		fput(filp);
		fput_light(filp, fput_needed);
		out:
		if (sock) {
		netlink_detachskb(sock, nc);
		@@ -1308,6 +1309,7 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
		{
		int ret;
		struct mq_attr mqstat, omqstat;
		int fput_needed;
		struct file *filp;
		struct inode *inode;
		struct mqueue_inode_info *info;
		@@ -1319,7 +1321,7 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
		return -EINVAL;
		}

		filp = fget(mqdes);
		filp = fget_light(mqdes, &fput_needed);
		if (!filp) {
		ret = -EBADF;
		goto out;
		@@ -1356,7 +1358,7 @@ SYSCALL_DEFINE3(mq_getsetattr, mqd_t, mqdes,
		ret = -EFAULT;

		out_fput:
		fput(filp);
		fput_light(filp, fput_needed);
		out:
		return ret;
		}