| /* |
| * 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/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| #include <linux/module.h> |
| #include <linux/blkdev.h> |
| #include <linux/capability.h> |
| #include <linux/completion.h> |
| #include <linux/cdrom.h> |
| #include <linux/slab.h> |
| #include <linux/times.h> |
| #include <asm/uaccess.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_ioctl.h> |
| #include <scsi/scsi_cmnd.h> |
| |
| /* Command group 3 is reserved and should never be used. */ |
| const unsigned char scsi_command_size_tbl[8] = |
| { |
| 6, 10, 10, 12, |
| 16, 12, 10, 10 |
| }; |
| EXPORT_SYMBOL(scsi_command_size_tbl); |
| |
| #include <scsi/sg.h> |
| |
| static int sg_get_version(int __user *p) |
| { |
| static const int sg_version_num = 30527; |
| return put_user(sg_version_num, p); |
| } |
| |
| static int scsi_get_idlun(struct request_queue *q, int __user *p) |
| { |
| return put_user(0, p); |
| } |
| |
| static int scsi_get_bus(struct request_queue *q, int __user *p) |
| { |
| return put_user(0, p); |
| } |
| |
| static int sg_get_timeout(struct request_queue *q) |
| { |
| return q->sg_timeout / (HZ / USER_HZ); |
| } |
| |
| static int sg_set_timeout(struct request_queue *q, int __user *p) |
| { |
| int timeout, err = get_user(timeout, p); |
| |
| if (!err) |
| q->sg_timeout = timeout * (HZ / USER_HZ); |
| |
| return err; |
| } |
| |
| static int sg_get_reserved_size(struct request_queue *q, int __user *p) |
| { |
| unsigned val = min(q->sg_reserved_size, q->max_sectors << 9); |
| |
| return put_user(val, p); |
| } |
| |
| static int sg_set_reserved_size(struct request_queue *q, int __user *p) |
| { |
| int size, err = get_user(size, p); |
| |
| if (err) |
| return err; |
| |
| if (size < 0) |
| return -EINVAL; |
| if (size > (q->max_sectors << 9)) |
| size = q->max_sectors << 9; |
| |
| q->sg_reserved_size = size; |
| return 0; |
| } |
| |
| /* |
| * will always return that we are ATAPI even for a real SCSI drive, I'm not |
| * so sure this is worth doing anything about (why would you care??) |
| */ |
| static int sg_emulated_host(struct request_queue *q, int __user *p) |
| { |
| return put_user(1, p); |
| } |
| |
| #define CMD_READ_SAFE 0x01 |
| #define CMD_WRITE_SAFE 0x02 |
| #define CMD_WARNED 0x04 |
| #define safe_for_read(cmd) [cmd] = CMD_READ_SAFE |
| #define safe_for_write(cmd) [cmd] = CMD_WRITE_SAFE |
| |
| int blk_verify_command(unsigned char *cmd, int has_write_perm) |
| { |
| static unsigned char cmd_type[256] = { |
| |
| /* Basic read-only commands */ |
| safe_for_read(TEST_UNIT_READY), |
| safe_for_read(REQUEST_SENSE), |
| safe_for_read(READ_6), |
| safe_for_read(READ_10), |
| safe_for_read(READ_12), |
| safe_for_read(READ_16), |
| safe_for_read(READ_BUFFER), |
| safe_for_read(READ_DEFECT_DATA), |
| safe_for_read(READ_LONG), |
| safe_for_read(INQUIRY), |
| safe_for_read(MODE_SENSE), |
| safe_for_read(MODE_SENSE_10), |
| safe_for_read(LOG_SENSE), |
| safe_for_read(START_STOP), |
| safe_for_read(GPCMD_VERIFY_10), |
| safe_for_read(VERIFY_16), |
| |
| /* Audio CD commands */ |
| safe_for_read(GPCMD_PLAY_CD), |
| safe_for_read(GPCMD_PLAY_AUDIO_10), |
| safe_for_read(GPCMD_PLAY_AUDIO_MSF), |
| safe_for_read(GPCMD_PLAY_AUDIO_TI), |
| safe_for_read(GPCMD_PAUSE_RESUME), |
| |
| /* CD/DVD data reading */ |
| safe_for_read(GPCMD_READ_BUFFER_CAPACITY), |
| safe_for_read(GPCMD_READ_CD), |
| safe_for_read(GPCMD_READ_CD_MSF), |
| safe_for_read(GPCMD_READ_DISC_INFO), |
| safe_for_read(GPCMD_READ_CDVD_CAPACITY), |
| safe_for_read(GPCMD_READ_DVD_STRUCTURE), |
| safe_for_read(GPCMD_READ_HEADER), |
| safe_for_read(GPCMD_READ_TRACK_RZONE_INFO), |
| safe_for_read(GPCMD_READ_SUBCHANNEL), |
| safe_for_read(GPCMD_READ_TOC_PMA_ATIP), |
| safe_for_read(GPCMD_REPORT_KEY), |
| safe_for_read(GPCMD_SCAN), |
| safe_for_read(GPCMD_GET_CONFIGURATION), |
| safe_for_read(GPCMD_READ_FORMAT_CAPACITIES), |
| safe_for_read(GPCMD_GET_EVENT_STATUS_NOTIFICATION), |
| safe_for_read(GPCMD_GET_PERFORMANCE), |
| safe_for_read(GPCMD_SEEK), |
| safe_for_read(GPCMD_STOP_PLAY_SCAN), |
| |
| /* Basic writing commands */ |
| safe_for_write(WRITE_6), |
| safe_for_write(WRITE_10), |
| safe_for_write(WRITE_VERIFY), |
| safe_for_write(WRITE_12), |
| safe_for_write(WRITE_VERIFY_12), |
| safe_for_write(WRITE_16), |
| safe_for_write(WRITE_LONG), |
| safe_for_write(WRITE_LONG_2), |
| safe_for_write(ERASE), |
| safe_for_write(GPCMD_MODE_SELECT_10), |
| safe_for_write(MODE_SELECT), |
| safe_for_write(LOG_SELECT), |
| safe_for_write(GPCMD_BLANK), |
| safe_for_write(GPCMD_CLOSE_TRACK), |
| safe_for_write(GPCMD_FLUSH_CACHE), |
| safe_for_write(GPCMD_FORMAT_UNIT), |
| safe_for_write(GPCMD_REPAIR_RZONE_TRACK), |
| safe_for_write(GPCMD_RESERVE_RZONE_TRACK), |
| safe_for_write(GPCMD_SEND_DVD_STRUCTURE), |
| safe_for_write(GPCMD_SEND_EVENT), |
| safe_for_write(GPCMD_SEND_KEY), |
| safe_for_write(GPCMD_SEND_OPC), |
| safe_for_write(GPCMD_SEND_CUE_SHEET), |
| safe_for_write(GPCMD_SET_SPEED), |
| safe_for_write(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL), |
| safe_for_write(GPCMD_LOAD_UNLOAD), |
| safe_for_write(GPCMD_SET_STREAMING), |
| }; |
| unsigned char type = cmd_type[cmd[0]]; |
| |
| /* Anybody who can open the device can do a read-safe command */ |
| if (type & CMD_READ_SAFE) |
| return 0; |
| |
| /* Write-safe commands just require a writable open.. */ |
| if ((type & CMD_WRITE_SAFE) && has_write_perm) |
| return 0; |
| |
| /* And root can do any command.. */ |
| if (capable(CAP_SYS_RAWIO)) |
| return 0; |
| |
| if (!type) { |
| cmd_type[cmd[0]] = CMD_WARNED; |
| printk(KERN_WARNING "scsi: unknown opcode 0x%02x\n", cmd[0]); |
| } |
| |
| /* Otherwise fail it with an "Operation not permitted" */ |
| return -EPERM; |
| } |
| EXPORT_SYMBOL_GPL(blk_verify_command); |
| |
| static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq, |
| struct sg_io_hdr *hdr, int has_write_perm) |
| { |
| memset(rq->cmd, 0, BLK_MAX_CDB); /* ATAPI hates garbage after CDB */ |
| |
| if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len)) |
| return -EFAULT; |
| if (blk_verify_command(rq->cmd, has_write_perm)) |
| return -EPERM; |
| |
| /* |
| * fill in request structure |
| */ |
| rq->cmd_len = hdr->cmd_len; |
| rq->cmd_type = REQ_TYPE_BLOCK_PC; |
| |
| rq->timeout = msecs_to_jiffies(hdr->timeout); |
| if (!rq->timeout) |
| rq->timeout = q->sg_timeout; |
| if (!rq->timeout) |
| rq->timeout = BLK_DEFAULT_SG_TIMEOUT; |
| |
| return 0; |
| } |
| |
| /* |
| * unmap a request that was previously mapped to this sg_io_hdr. handles |
| * both sg and non-sg sg_io_hdr. |
| */ |
| static int blk_unmap_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr) |
| { |
| blk_rq_unmap_user(rq->bio); |
| blk_put_request(rq); |
| return 0; |
| } |
| |
| static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, |
| struct bio *bio) |
| { |
| int r, ret = 0; |
| |
| /* |
| * fill in all the output members |
| */ |
| hdr->status = rq->errors & 0xff; |
| hdr->masked_status = status_byte(rq->errors); |
| hdr->msg_status = msg_byte(rq->errors); |
| hdr->host_status = host_byte(rq->errors); |
| hdr->driver_status = driver_byte(rq->errors); |
| hdr->info = 0; |
| if (hdr->masked_status || hdr->host_status || hdr->driver_status) |
| hdr->info |= SG_INFO_CHECK; |
| hdr->resid = rq->data_len; |
| hdr->sb_len_wr = 0; |
| |
| if (rq->sense_len && hdr->sbp) { |
| int len = min((unsigned int) hdr->mx_sb_len, rq->sense_len); |
| |
| if (!copy_to_user(hdr->sbp, rq->sense, len)) |
| hdr->sb_len_wr = len; |
| else |
| ret = -EFAULT; |
| } |
| |
| rq->bio = bio; |
| r = blk_unmap_sghdr_rq(rq, hdr); |
| if (ret) |
| r = ret; |
| |
| return r; |
| } |
| |
| static int sg_io(struct file *file, struct request_queue *q, |
| struct gendisk *bd_disk, struct sg_io_hdr *hdr) |
| { |
| unsigned long start_time; |
| int writing = 0, ret = 0, has_write_perm = 0; |
| struct request *rq; |
| char sense[SCSI_SENSE_BUFFERSIZE]; |
| struct bio *bio; |
| |
| if (hdr->interface_id != 'S') |
| return -EINVAL; |
| if (hdr->cmd_len > BLK_MAX_CDB) |
| return -EINVAL; |
| |
| if (hdr->dxfer_len > (q->max_hw_sectors << 9)) |
| return -EIO; |
| |
| if (hdr->dxfer_len) |
| switch (hdr->dxfer_direction) { |
| default: |
| return -EINVAL; |
| case SG_DXFER_TO_DEV: |
| writing = 1; |
| break; |
| case SG_DXFER_TO_FROM_DEV: |
| case SG_DXFER_FROM_DEV: |
| break; |
| } |
| |
| rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL); |
| if (!rq) |
| return -ENOMEM; |
| |
| if (file) |
| has_write_perm = file->f_mode & FMODE_WRITE; |
| |
| if (blk_fill_sghdr_rq(q, rq, hdr, has_write_perm)) { |
| blk_put_request(rq); |
| return -EFAULT; |
| } |
| |
| if (hdr->iovec_count) { |
| const int size = sizeof(struct sg_iovec) * hdr->iovec_count; |
| struct sg_iovec *iov; |
| |
| iov = kmalloc(size, GFP_KERNEL); |
| if (!iov) { |
| ret = -ENOMEM; |
| goto out; |
| } |
| |
| if (copy_from_user(iov, hdr->dxferp, size)) { |
| kfree(iov); |
| ret = -EFAULT; |
| goto out; |
| } |
| |
| ret = blk_rq_map_user_iov(q, rq, iov, hdr->iovec_count, |
| hdr->dxfer_len); |
| kfree(iov); |
| } else if (hdr->dxfer_len) |
| ret = blk_rq_map_user(q, rq, hdr->dxferp, hdr->dxfer_len); |
| |
| if (ret) |
| goto out; |
| |
| bio = rq->bio; |
| memset(sense, 0, sizeof(sense)); |
| rq->sense = sense; |
| rq->sense_len = 0; |
| rq->retries = 0; |
| |
| start_time = jiffies; |
| |
| /* ignore return value. All information is passed back to caller |
| * (if he doesn't check that is his problem). |
| * N.B. a non-zero SCSI status is _not_ necessarily an error. |
| */ |
| blk_execute_rq(q, bd_disk, rq, 0); |
| |
| hdr->duration = jiffies_to_msecs(jiffies - start_time); |
| |
| return blk_complete_sghdr_rq(rq, hdr, bio); |
| out: |
| blk_put_request(rq); |
| return ret; |
| } |
| |
| /** |
| * sg_scsi_ioctl -- handle deprecated SCSI_IOCTL_SEND_COMMAND ioctl |
| * @file: file this ioctl operates on (optional) |
| * @q: request queue to send scsi commands down |
| * @disk: gendisk to operate on (option) |
| * @sic: userspace structure describing the command to perform |
| * |
| * Send down the scsi command described by @sic to the device below |
| * the request queue @q. If @file is non-NULL it's used to perform |
| * fine-grained permission checks that allow users to send down |
| * non-destructive SCSI commands. If the caller has a struct gendisk |
| * available it should be passed in as @disk to allow the low level |
| * driver to use the information contained in it. A non-NULL @disk |
| * is only allowed if the caller knows that the low level driver doesn't |
| * need it (e.g. in the scsi subsystem). |
| * |
| * Notes: |
| * - This interface is deprecated - users should use the SG_IO |
| * interface instead, as this is a more flexible approach to |
| * performing SCSI commands on a device. |
| * - The SCSI command length is determined by examining the 1st byte |
| * of the given command. There is no way to override this. |
| * - Data transfers are limited to PAGE_SIZE |
| * - The length (x + y) must be at least OMAX_SB_LEN bytes long to |
| * accommodate the sense buffer when an error occurs. |
| * The sense buffer is truncated to OMAX_SB_LEN (16) bytes so that |
| * old code will not be surprised. |
| * - If a Unix error occurs (e.g. ENOMEM) then the user will receive |
| * a negative return and the Unix error code in 'errno'. |
| * If the SCSI command succeeds then 0 is returned. |
| * Positive numbers returned are the compacted SCSI error codes (4 |
| * bytes in one int) where the lowest byte is the SCSI status. |
| */ |
| #define OMAX_SB_LEN 16 /* For backward compatibility */ |
| int sg_scsi_ioctl(struct file *file, struct request_queue *q, |
| struct gendisk *disk, struct scsi_ioctl_command __user *sic) |
| { |
| struct request *rq; |
| int err; |
| unsigned int in_len, out_len, bytes, opcode, cmdlen; |
| char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE]; |
| |
| if (!sic) |
| return -EINVAL; |
| |
| /* |
| * get in an out lengths, verify they don't exceed a page worth of data |
| */ |
| if (get_user(in_len, &sic->inlen)) |
| return -EFAULT; |
| if (get_user(out_len, &sic->outlen)) |
| return -EFAULT; |
| if (in_len > PAGE_SIZE || out_len > PAGE_SIZE) |
| return -EINVAL; |
| if (get_user(opcode, sic->data)) |
| return -EFAULT; |
| |
| bytes = max(in_len, out_len); |
| if (bytes) { |
| buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN); |
| if (!buffer) |
| return -ENOMEM; |
| |
| } |
| |
| rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT); |
| |
| cmdlen = COMMAND_SIZE(opcode); |
| |
| /* |
| * get command and data to send to device, if any |
| */ |
| err = -EFAULT; |
| rq->cmd_len = cmdlen; |
| if (copy_from_user(rq->cmd, sic->data, cmdlen)) |
| goto error; |
| |
| if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len)) |
| goto error; |
| |
| err = blk_verify_command(rq->cmd, file->f_mode & FMODE_WRITE); |
| if (err) |
| goto error; |
| |
| /* default. possible overriden later */ |
| rq->retries = 5; |
| |
| switch (opcode) { |
| case SEND_DIAGNOSTIC: |
| case FORMAT_UNIT: |
| rq->timeout = FORMAT_UNIT_TIMEOUT; |
| rq->retries = 1; |
| break; |
| case START_STOP: |
| rq->timeout = START_STOP_TIMEOUT; |
| break; |
| case MOVE_MEDIUM: |
| rq->timeout = MOVE_MEDIUM_TIMEOUT; |
| break; |
| case READ_ELEMENT_STATUS: |
| rq->timeout = READ_ELEMENT_STATUS_TIMEOUT; |
| break; |
| case READ_DEFECT_DATA: |
| rq->timeout = READ_DEFECT_DATA_TIMEOUT; |
| rq->retries = 1; |
| break; |
| default: |
| rq->timeout = BLK_DEFAULT_SG_TIMEOUT; |
| break; |
| } |
| |
| if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, __GFP_WAIT)) { |
| err = DRIVER_ERROR << 24; |
| goto out; |
| } |
| |
| memset(sense, 0, sizeof(sense)); |
| rq->sense = sense; |
| rq->sense_len = 0; |
| rq->cmd_type = REQ_TYPE_BLOCK_PC; |
| |
| blk_execute_rq(q, disk, rq, 0); |
| |
| out: |
| err = rq->errors & 0xff; /* only 8 bit SCSI status */ |
| if (err) { |
| if (rq->sense_len && rq->sense) { |
| bytes = (OMAX_SB_LEN > rq->sense_len) ? |
| rq->sense_len : OMAX_SB_LEN; |
| if (copy_to_user(sic->data, rq->sense, bytes)) |
| err = -EFAULT; |
| } |
| } else { |
| if (copy_to_user(sic->data, buffer, out_len)) |
| err = -EFAULT; |
| } |
| |
| error: |
| kfree(buffer); |
| blk_put_request(rq); |
| return err; |
| } |
| EXPORT_SYMBOL_GPL(sg_scsi_ioctl); |
| |
| /* Send basic block requests */ |
| static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk, |
| int cmd, int data) |
| { |
| struct request *rq; |
| int err; |
| |
| rq = blk_get_request(q, WRITE, __GFP_WAIT); |
| rq->cmd_type = REQ_TYPE_BLOCK_PC; |
| rq->data = NULL; |
| rq->data_len = 0; |
| rq->extra_len = 0; |
| rq->timeout = BLK_DEFAULT_SG_TIMEOUT; |
| memset(rq->cmd, 0, sizeof(rq->cmd)); |
| rq->cmd[0] = cmd; |
| rq->cmd[4] = data; |
| rq->cmd_len = 6; |
| err = blk_execute_rq(q, bd_disk, rq, 0); |
| blk_put_request(rq); |
| |
| return err; |
| } |
| |
| static inline int blk_send_start_stop(struct request_queue *q, |
| struct gendisk *bd_disk, int data) |
| { |
| return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data); |
| } |
| |
| int scsi_cmd_ioctl(struct file *file, struct request_queue *q, |
| struct gendisk *bd_disk, unsigned int cmd, void __user *arg) |
| { |
| int err; |
| |
| if (!q || blk_get_queue(q)) |
| return -ENXIO; |
| |
| switch (cmd) { |
| /* |
| * new sgv3 interface |
| */ |
| case SG_GET_VERSION_NUM: |
| err = sg_get_version(arg); |
| break; |
| case SCSI_IOCTL_GET_IDLUN: |
| err = scsi_get_idlun(q, arg); |
| break; |
| case SCSI_IOCTL_GET_BUS_NUMBER: |
| err = scsi_get_bus(q, arg); |
| break; |
| case SG_SET_TIMEOUT: |
| err = sg_set_timeout(q, arg); |
| break; |
| case SG_GET_TIMEOUT: |
| err = sg_get_timeout(q); |
| break; |
| case SG_GET_RESERVED_SIZE: |
| err = sg_get_reserved_size(q, arg); |
| break; |
| case SG_SET_RESERVED_SIZE: |
| err = sg_set_reserved_size(q, arg); |
| break; |
| case SG_EMULATED_HOST: |
| err = sg_emulated_host(q, arg); |
| break; |
| case SG_IO: { |
| struct sg_io_hdr hdr; |
| |
| err = -EFAULT; |
| if (copy_from_user(&hdr, arg, sizeof(hdr))) |
| break; |
| err = sg_io(file, q, bd_disk, &hdr); |
| if (err == -EFAULT) |
| break; |
| |
| if (copy_to_user(arg, &hdr, sizeof(hdr))) |
| err = -EFAULT; |
| break; |
| } |
| case CDROM_SEND_PACKET: { |
| struct cdrom_generic_command cgc; |
| struct sg_io_hdr hdr; |
| |
| err = -EFAULT; |
| if (copy_from_user(&cgc, arg, sizeof(cgc))) |
| break; |
| cgc.timeout = clock_t_to_jiffies(cgc.timeout); |
| memset(&hdr, 0, sizeof(hdr)); |
| hdr.interface_id = 'S'; |
| hdr.cmd_len = sizeof(cgc.cmd); |
| hdr.dxfer_len = cgc.buflen; |
| err = 0; |
| switch (cgc.data_direction) { |
| case CGC_DATA_UNKNOWN: |
| hdr.dxfer_direction = SG_DXFER_UNKNOWN; |
| break; |
| case CGC_DATA_WRITE: |
| hdr.dxfer_direction = SG_DXFER_TO_DEV; |
| break; |
| case CGC_DATA_READ: |
| hdr.dxfer_direction = SG_DXFER_FROM_DEV; |
| break; |
| case CGC_DATA_NONE: |
| hdr.dxfer_direction = SG_DXFER_NONE; |
| break; |
| default: |
| err = -EINVAL; |
| } |
| if (err) |
| break; |
| |
| hdr.dxferp = cgc.buffer; |
| hdr.sbp = cgc.sense; |
| if (hdr.sbp) |
| hdr.mx_sb_len = sizeof(struct request_sense); |
| hdr.timeout = cgc.timeout; |
| hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd; |
| hdr.cmd_len = sizeof(cgc.cmd); |
| |
| err = sg_io(file, q, bd_disk, &hdr); |
| if (err == -EFAULT) |
| break; |
| |
| if (hdr.status) |
| err = -EIO; |
| |
| cgc.stat = err; |
| cgc.buflen = hdr.resid; |
| if (copy_to_user(arg, &cgc, sizeof(cgc))) |
| err = -EFAULT; |
| |
| break; |
| } |
| |
| /* |
| * old junk scsi send command ioctl |
| */ |
| case SCSI_IOCTL_SEND_COMMAND: |
| printk(KERN_WARNING "program %s is using a deprecated SCSI ioctl, please convert it to SG_IO\n", current->comm); |
| err = -EINVAL; |
| if (!arg) |
| break; |
| |
| err = sg_scsi_ioctl(file, q, bd_disk, arg); |
| break; |
| case CDROMCLOSETRAY: |
| err = blk_send_start_stop(q, bd_disk, 0x03); |
| break; |
| case CDROMEJECT: |
| err = blk_send_start_stop(q, bd_disk, 0x02); |
| break; |
| default: |
| err = -ENOTTY; |
| } |
| |
| blk_put_queue(q); |
| return err; |
| } |
| |
| EXPORT_SYMBOL(scsi_cmd_ioctl); |