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Commit b0337d6c authored by John L. Hammond's avatar John L. Hammond Committed by Greg Kroah-Hartman
Browse files

staging/lustre/llite: pass correct pointer to obd_iocontrol() 

In copy_and_ioctl() use the kernel space copy as the karg to
obd_iocontrol().

Lustre-change: http://review.whamcloud.com/6274
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3283


Signed-off-by: default avatarJohn L. Hammond <john.hammond@intel.com>
Reviewed-by: default avatarSebastien Buisson <sebastien.buisson@bull.net>
Reviewed-by: default avatarOleg Drokin <oleg.drokin@intel.com>
Signed-off-by: default avatarPeng Tao <bergwolf@gmail.com>
Signed-off-by: default avatarAndreas Dilger <andreas.dilger@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4f2fb455

drivers/staging/lustre/lustre/llite/dir.c

+14 −9
Original line number Diff line number Diff line
@@ -1048,20 +1048,25 @@ static int ll_ioc_copy_end(struct super_block *sb, struct hsm_copy *copy) 
}





static int copy_and_ioctl(int cmd, struct obd_export *exp, void *data, int len)

static int copy_and_ioctl(int cmd, struct obd_export *exp,

			  const void __user *data, size_t size)

{

	void *ptr;

	void *copy;

	int rc;



	OBD_ALLOC(ptr, len);

	if (ptr == NULL)

	OBD_ALLOC(copy, size);

	if (copy == NULL)

		return -ENOMEM;

	if (copy_from_user(ptr, data, len)) {

		OBD_FREE(ptr, len);

		return -EFAULT;



	if (copy_from_user(copy, data, size)) {

		rc = -EFAULT;

		goto out;

	}

	rc = obd_iocontrol(cmd, exp, len, data, NULL);

	OBD_FREE(ptr, len);



	rc = obd_iocontrol(cmd, exp, size, copy, NULL);

out:

	OBD_FREE(copy, size);



	return rc;

}