Commit 2966387b authored by Andi Kleen's avatar Andi Kleen Committed by Linus Torvalds
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[PATCH] x86_64: Implement compat code for sg driver SG_GET_REQUEST_TABLE ioctl 



Apparently helps with some non SANE scanner drivers.

Cc: axboe@suse.de

Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent f95190b2

fs/compat_ioctl.c

+35 −0
Original line number Diff line number Diff line
@@ -916,6 +916,40 @@ static int sg_ioctl_trans(unsigned int fd, unsigned int cmd, unsigned long arg) 
	return err;

}



struct compat_sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */

	char req_state;

	char orphan;

	char sg_io_owned;

	char problem;

	int pack_id;

	compat_uptr_t usr_ptr;

	unsigned int duration;

	int unused;

};



static int sg_grt_trans(unsigned int fd, unsigned int cmd, unsigned long arg)

{

	int err, i;

	sg_req_info_t *r;

	struct compat_sg_req_info *o = (struct compat_sg_req_info *)arg;

	r = compat_alloc_user_space(sizeof(sg_req_info_t)*SG_MAX_QUEUE);

	err = sys_ioctl(fd,cmd,(unsigned long)r);

	if (err < 0)

		return err;

	for (i = 0; i < SG_MAX_QUEUE; i++) {

		void __user *ptr;

		int d;



		if (copy_in_user(o + i, r + i, offsetof(sg_req_info_t, usr_ptr)) ||

		    get_user(ptr, &r[i].usr_ptr) ||

		    get_user(d, &r[i].duration) ||

		    put_user((u32)(unsigned long)(ptr), &o[i].usr_ptr) ||

		    put_user(d, &o[i].duration))

			return -EFAULT;

	}

	return err;

}



struct sock_fprog32 {

	unsigned short	len;

	compat_caddr_t	filter;
@@ -2794,6 +2828,7 @@ HANDLE_IOCTL(FDPOLLDRVSTAT32, fd_ioctl_trans) 
HANDLE_IOCTL(FDGETFDCSTAT32, fd_ioctl_trans)

HANDLE_IOCTL(FDWERRORGET32, fd_ioctl_trans)

HANDLE_IOCTL(SG_IO,sg_ioctl_trans)

HANDLE_IOCTL(SG_GET_REQUEST_TABLE, sg_grt_trans)

HANDLE_IOCTL(PPPIOCGIDLE32, ppp_ioctl_trans)

HANDLE_IOCTL(PPPIOCSCOMPRESS32, ppp_ioctl_trans)

HANDLE_IOCTL(PPPIOCSPASS32, ppp_sock_fprog_ioctl_trans)