| /* |
| * Copyright (C) 2001 Jens Axboe <axboe@suse.de> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public Licens |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111- |
| * |
| */ |
| #include <linux/sched.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/config.h> |
| #include <linux/locks.h> |
| #include <linux/swap.h> |
| #include <linux/init.h> |
| #include <linux/smp_lock.h> |
| #include <linux/module.h> |
| #include <linux/blk.h> |
| |
| #include <linux/cdrom.h> |
| |
| int blk_do_rq(request_queue_t *q, struct request *rq) |
| { |
| DECLARE_COMPLETION(wait); |
| int err = 0; |
| |
| rq->flags |= REQ_BARRIER; |
| rq->waiting = &wait; |
| elv_add_request(q, rq, 1); |
| generic_unplug_device(q); |
| wait_for_completion(&wait); |
| |
| /* |
| * for now, never retry anything |
| */ |
| if (rq->errors) |
| err = -EIO; |
| |
| return err; |
| } |
| |
| int block_ioctl(kdev_t dev, unsigned int cmd, unsigned long arg) |
| { |
| request_queue_t *q; |
| struct request *rq; |
| int close = 0, err; |
| |
| q = blk_get_queue(dev); |
| if (!q) |
| return -ENXIO; |
| |
| switch (cmd) { |
| case CDROMCLOSETRAY: |
| close = 1; |
| case CDROMEJECT: |
| rq = blk_get_request(q, WRITE, __GFP_WAIT); |
| rq->flags = REQ_BLOCK_PC; |
| memset(rq->cmd, 0, sizeof(rq->cmd)); |
| rq->cmd[0] = GPCMD_START_STOP_UNIT; |
| rq->cmd[4] = 0x02 + (close != 0); |
| err = blk_do_rq(q, rq); |
| blk_put_request(rq); |
| break; |
| default: |
| err = -ENOTTY; |
| } |
| |
| #if 0 |
| blk_put_queue(q); |
| #endif |
| return err; |
| } |