From 35311d6478077f7bfe35c1c653193e658bf32686 Mon Sep 17 00:00:00 2001
From: Kirill Korotaev <dev@sw.ru>
Date: Fri, 9 Sep 2005 13:05:53 -0700
Subject: [PATCH] [PATCH] lost fput in 32bit ioctl on x86-64
This adds a lost fput in 32bit tiocgdev ioctl on x86-64
[ chrisw: Updated to use fget_light/fput_light ]
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-Off-By: Maxim Giryaev <gem@sw.ru>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
arch/x86_64/ia32/ia32_ioctl.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/arch/x86_64/ia32/ia32_ioctl.c b/arch/x86_64/ia32/ia32_ioctl.c
index d259f8a6f811d..419758f19ca4f 100644
--- a/arch/x86_64/ia32/ia32_ioctl.c
+++ b/arch/x86_64/ia32/ia32_ioctl.c
@@ -24,17 +24,26 @@
static int tiocgdev(unsigned fd, unsigned cmd, unsigned int __user *ptr)
{
- struct file *file = fget(fd);
+ struct file *file;
struct tty_struct *real_tty;
+ int fput_needed, ret;
+ file = fget_light(fd, &fput_needed);
if (!file)
return -EBADF;
+
+ ret = -EINVAL;
if (file->f_op->ioctl != tty_ioctl)
- return -EINVAL;
+ goto out;
real_tty = (struct tty_struct *)file->private_data;
if (!real_tty)
- return -EINVAL;
- return put_user(new_encode_dev(tty_devnum(real_tty)), ptr);
+ goto out;
+
+ ret = put_user(new_encode_dev(tty_devnum(real_tty)), ptr);
+
+out:
+ fput_light(file, fput_needed);
+ return ret;
}
#define RTC_IRQP_READ32 _IOR('p', 0x0b, unsigned int) /* Read IRQ rate */
--
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