[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: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index f516963..f0b7256 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -916,6 +916,40 @@
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(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)