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cdrom: split mmc_ioctl to lower stack usage
Checkstack output: Before: mmc_ioctl: 584 After: mmc_ioctl_dvd_read_struct: 280 mmc_ioctl_cdrom_subchannel: 152 mmc_ioctl_cdrom_read_data: 120 mmc_ioctl_cdrom_volume: 104 mmc_ioctl_cdrom_read_audio: 104 (mmc_ioctl is inlined into cdrom_ioctl - 104 bytes) Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Marcin Slusarz
Jens Axboe
parent
2b91bafcc0
commit
3147c531b6
1 changed files with 339 additions and 251 deletions
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@ -2787,14 +2787,323 @@ static int cdrom_switch_blocksize(struct cdrom_device_info *cdi, int size)
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return cdo->generic_packet(cdi, &cgc);
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}
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static noinline int mmc_ioctl_cdrom_read_data(struct cdrom_device_info *cdi,
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void __user *arg,
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struct packet_command *cgc,
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int cmd)
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{
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struct request_sense sense;
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struct cdrom_msf msf;
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int blocksize = 0, format = 0, lba;
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int ret;
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switch (cmd) {
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case CDROMREADRAW:
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blocksize = CD_FRAMESIZE_RAW;
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break;
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case CDROMREADMODE1:
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blocksize = CD_FRAMESIZE;
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format = 2;
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break;
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case CDROMREADMODE2:
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blocksize = CD_FRAMESIZE_RAW0;
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break;
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}
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IOCTL_IN(arg, struct cdrom_msf, msf);
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lba = msf_to_lba(msf.cdmsf_min0, msf.cdmsf_sec0, msf.cdmsf_frame0);
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/* FIXME: we need upper bound checking, too!! */
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if (lba < 0)
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return -EINVAL;
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cgc->buffer = kmalloc(blocksize, GFP_KERNEL);
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if (cgc->buffer == NULL)
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return -ENOMEM;
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memset(&sense, 0, sizeof(sense));
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cgc->sense = &sense;
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cgc->data_direction = CGC_DATA_READ;
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ret = cdrom_read_block(cdi, cgc, lba, 1, format, blocksize);
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if (ret && sense.sense_key == 0x05 &&
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sense.asc == 0x20 &&
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sense.ascq == 0x00) {
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/*
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* SCSI-II devices are not required to support
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* READ_CD, so let's try switching block size
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*/
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/* FIXME: switch back again... */
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ret = cdrom_switch_blocksize(cdi, blocksize);
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if (ret)
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goto out;
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cgc->sense = NULL;
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ret = cdrom_read_cd(cdi, cgc, lba, blocksize, 1);
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ret |= cdrom_switch_blocksize(cdi, blocksize);
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}
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if (!ret && copy_to_user(arg, cgc->buffer, blocksize))
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ret = -EFAULT;
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out:
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kfree(cgc->buffer);
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return ret;
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}
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static noinline int mmc_ioctl_cdrom_read_audio(struct cdrom_device_info *cdi,
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void __user *arg)
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{
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struct cdrom_read_audio ra;
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int lba;
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IOCTL_IN(arg, struct cdrom_read_audio, ra);
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if (ra.addr_format == CDROM_MSF)
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lba = msf_to_lba(ra.addr.msf.minute,
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ra.addr.msf.second,
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ra.addr.msf.frame);
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else if (ra.addr_format == CDROM_LBA)
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lba = ra.addr.lba;
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else
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return -EINVAL;
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/* FIXME: we need upper bound checking, too!! */
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if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
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return -EINVAL;
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return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
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}
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static noinline int mmc_ioctl_cdrom_subchannel(struct cdrom_device_info *cdi,
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void __user *arg)
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{
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int ret;
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struct cdrom_subchnl q;
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u_char requested, back;
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IOCTL_IN(arg, struct cdrom_subchnl, q);
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requested = q.cdsc_format;
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if (!((requested == CDROM_MSF) ||
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(requested == CDROM_LBA)))
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return -EINVAL;
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q.cdsc_format = CDROM_MSF;
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ret = cdrom_read_subchannel(cdi, &q, 0);
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if (ret)
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return ret;
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back = q.cdsc_format; /* local copy */
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sanitize_format(&q.cdsc_absaddr, &back, requested);
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sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
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IOCTL_OUT(arg, struct cdrom_subchnl, q);
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/* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
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return 0;
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}
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static noinline int mmc_ioctl_cdrom_play_msf(struct cdrom_device_info *cdi,
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void __user *arg,
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struct packet_command *cgc)
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{
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struct cdrom_device_ops *cdo = cdi->ops;
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struct cdrom_msf msf;
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cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
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IOCTL_IN(arg, struct cdrom_msf, msf);
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cgc->cmd[0] = GPCMD_PLAY_AUDIO_MSF;
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cgc->cmd[3] = msf.cdmsf_min0;
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cgc->cmd[4] = msf.cdmsf_sec0;
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cgc->cmd[5] = msf.cdmsf_frame0;
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cgc->cmd[6] = msf.cdmsf_min1;
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cgc->cmd[7] = msf.cdmsf_sec1;
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cgc->cmd[8] = msf.cdmsf_frame1;
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cgc->data_direction = CGC_DATA_NONE;
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return cdo->generic_packet(cdi, cgc);
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}
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static noinline int mmc_ioctl_cdrom_play_blk(struct cdrom_device_info *cdi,
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void __user *arg,
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struct packet_command *cgc)
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{
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struct cdrom_device_ops *cdo = cdi->ops;
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struct cdrom_blk blk;
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cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
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IOCTL_IN(arg, struct cdrom_blk, blk);
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cgc->cmd[0] = GPCMD_PLAY_AUDIO_10;
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cgc->cmd[2] = (blk.from >> 24) & 0xff;
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cgc->cmd[3] = (blk.from >> 16) & 0xff;
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cgc->cmd[4] = (blk.from >> 8) & 0xff;
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cgc->cmd[5] = blk.from & 0xff;
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cgc->cmd[7] = (blk.len >> 8) & 0xff;
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cgc->cmd[8] = blk.len & 0xff;
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cgc->data_direction = CGC_DATA_NONE;
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return cdo->generic_packet(cdi, cgc);
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}
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static noinline int mmc_ioctl_cdrom_volume(struct cdrom_device_info *cdi,
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void __user *arg,
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struct packet_command *cgc,
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unsigned int cmd)
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{
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struct cdrom_volctrl volctrl;
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unsigned char buffer[32];
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char mask[sizeof(buffer)];
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unsigned short offset;
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int ret;
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cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
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IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
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cgc->buffer = buffer;
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cgc->buflen = 24;
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ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 0);
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if (ret)
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return ret;
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/* originally the code depended on buffer[1] to determine
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how much data is available for transfer. buffer[1] is
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unfortunately ambigious and the only reliable way seem
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to be to simply skip over the block descriptor... */
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offset = 8 + be16_to_cpu(*(__be16 *)(buffer + 6));
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if (offset + 16 > sizeof(buffer))
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return -E2BIG;
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if (offset + 16 > cgc->buflen) {
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cgc->buflen = offset + 16;
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ret = cdrom_mode_sense(cdi, cgc,
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GPMODE_AUDIO_CTL_PAGE, 0);
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if (ret)
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return ret;
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}
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/* sanity check */
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if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
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buffer[offset + 1] < 14)
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return -EINVAL;
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/* now we have the current volume settings. if it was only
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a CDROMVOLREAD, return these values */
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if (cmd == CDROMVOLREAD) {
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volctrl.channel0 = buffer[offset+9];
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volctrl.channel1 = buffer[offset+11];
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volctrl.channel2 = buffer[offset+13];
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volctrl.channel3 = buffer[offset+15];
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IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
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return 0;
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}
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/* get the volume mask */
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cgc->buffer = mask;
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ret = cdrom_mode_sense(cdi, cgc, GPMODE_AUDIO_CTL_PAGE, 1);
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if (ret)
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return ret;
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buffer[offset + 9] = volctrl.channel0 & mask[offset + 9];
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buffer[offset + 11] = volctrl.channel1 & mask[offset + 11];
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buffer[offset + 13] = volctrl.channel2 & mask[offset + 13];
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buffer[offset + 15] = volctrl.channel3 & mask[offset + 15];
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/* set volume */
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cgc->buffer = buffer + offset - 8;
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memset(cgc->buffer, 0, 8);
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return cdrom_mode_select(cdi, cgc);
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}
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static noinline int mmc_ioctl_cdrom_start_stop(struct cdrom_device_info *cdi,
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struct packet_command *cgc,
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int cmd)
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{
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struct cdrom_device_ops *cdo = cdi->ops;
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cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
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cgc->cmd[0] = GPCMD_START_STOP_UNIT;
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cgc->cmd[1] = 1;
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cgc->cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
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cgc->data_direction = CGC_DATA_NONE;
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return cdo->generic_packet(cdi, cgc);
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}
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static noinline int mmc_ioctl_cdrom_pause_resume(struct cdrom_device_info *cdi,
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struct packet_command *cgc,
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int cmd)
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{
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struct cdrom_device_ops *cdo = cdi->ops;
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cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
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cgc->cmd[0] = GPCMD_PAUSE_RESUME;
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cgc->cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
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cgc->data_direction = CGC_DATA_NONE;
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return cdo->generic_packet(cdi, cgc);
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}
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static noinline int mmc_ioctl_dvd_read_struct(struct cdrom_device_info *cdi,
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void __user *arg)
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{
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int ret;
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dvd_struct *s;
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int size = sizeof(dvd_struct);
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if (!CDROM_CAN(CDC_DVD))
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return -ENOSYS;
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s = kmalloc(size, GFP_KERNEL);
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if (!s)
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return -ENOMEM;
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cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
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if (copy_from_user(s, arg, size)) {
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kfree(s);
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return -EFAULT;
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}
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ret = dvd_read_struct(cdi, s);
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if (ret)
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goto out;
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if (copy_to_user(arg, s, size))
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ret = -EFAULT;
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out:
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kfree(s);
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return ret;
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}
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static noinline int mmc_ioctl_dvd_auth(struct cdrom_device_info *cdi,
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void __user *arg)
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{
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int ret;
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dvd_authinfo ai;
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if (!CDROM_CAN(CDC_DVD))
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return -ENOSYS;
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cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
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IOCTL_IN(arg, dvd_authinfo, ai);
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ret = dvd_do_auth(cdi, &ai);
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if (ret)
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return ret;
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IOCTL_OUT(arg, dvd_authinfo, ai);
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return 0;
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}
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static noinline int mmc_ioctl_cdrom_next_writable(struct cdrom_device_info *cdi,
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void __user *arg)
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{
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int ret;
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long next = 0;
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cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
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ret = cdrom_get_next_writable(cdi, &next);
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if (ret)
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return ret;
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IOCTL_OUT(arg, long, next);
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return 0;
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}
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static noinline int mmc_ioctl_cdrom_last_written(struct cdrom_device_info *cdi,
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void __user *arg)
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{
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int ret;
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long last = 0;
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cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
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ret = cdrom_get_last_written(cdi, &last);
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if (ret)
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return ret;
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IOCTL_OUT(arg, long, last);
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return 0;
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}
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static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
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unsigned long arg)
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{
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struct cdrom_device_ops *cdo = cdi->ops;
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{
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struct packet_command cgc;
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struct request_sense sense;
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unsigned char buffer[32];
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int ret = 0;
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void __user *userptr = (void __user *)arg;
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memset(&cgc, 0, sizeof(cgc));
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@ -2803,255 +3112,34 @@ static int mmc_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
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switch (cmd) {
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case CDROMREADRAW:
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case CDROMREADMODE1:
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case CDROMREADMODE2: {
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struct cdrom_msf msf;
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int blocksize = 0, format = 0, lba;
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switch (cmd) {
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case CDROMREADRAW:
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blocksize = CD_FRAMESIZE_RAW;
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break;
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case CDROMREADMODE1:
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blocksize = CD_FRAMESIZE;
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format = 2;
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break;
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case CDROMREADMODE2:
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blocksize = CD_FRAMESIZE_RAW0;
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break;
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}
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IOCTL_IN(arg, struct cdrom_msf, msf);
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lba = msf_to_lba(msf.cdmsf_min0,msf.cdmsf_sec0,msf.cdmsf_frame0);
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/* FIXME: we need upper bound checking, too!! */
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if (lba < 0)
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return -EINVAL;
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cgc.buffer = kmalloc(blocksize, GFP_KERNEL);
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if (cgc.buffer == NULL)
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return -ENOMEM;
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memset(&sense, 0, sizeof(sense));
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cgc.sense = &sense;
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cgc.data_direction = CGC_DATA_READ;
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ret = cdrom_read_block(cdi, &cgc, lba, 1, format, blocksize);
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if (ret && sense.sense_key==0x05 && sense.asc==0x20 && sense.ascq==0x00) {
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/*
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* SCSI-II devices are not required to support
|
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* READ_CD, so let's try switching block size
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*/
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/* FIXME: switch back again... */
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if ((ret = cdrom_switch_blocksize(cdi, blocksize))) {
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kfree(cgc.buffer);
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return ret;
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}
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cgc.sense = NULL;
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ret = cdrom_read_cd(cdi, &cgc, lba, blocksize, 1);
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ret |= cdrom_switch_blocksize(cdi, blocksize);
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}
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if (!ret && copy_to_user((char __user *)arg, cgc.buffer, blocksize))
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ret = -EFAULT;
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kfree(cgc.buffer);
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return ret;
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}
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case CDROMREADAUDIO: {
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struct cdrom_read_audio ra;
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int lba;
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IOCTL_IN(arg, struct cdrom_read_audio, ra);
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if (ra.addr_format == CDROM_MSF)
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lba = msf_to_lba(ra.addr.msf.minute,
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ra.addr.msf.second,
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ra.addr.msf.frame);
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else if (ra.addr_format == CDROM_LBA)
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lba = ra.addr.lba;
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else
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return -EINVAL;
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/* FIXME: we need upper bound checking, too!! */
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if (lba < 0 || ra.nframes <= 0 || ra.nframes > CD_FRAMES)
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return -EINVAL;
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return cdrom_read_cdda(cdi, ra.buf, lba, ra.nframes);
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}
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case CDROMSUBCHNL: {
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struct cdrom_subchnl q;
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u_char requested, back;
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IOCTL_IN(arg, struct cdrom_subchnl, q);
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requested = q.cdsc_format;
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if (!((requested == CDROM_MSF) ||
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(requested == CDROM_LBA)))
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return -EINVAL;
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q.cdsc_format = CDROM_MSF;
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if ((ret = cdrom_read_subchannel(cdi, &q, 0)))
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return ret;
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back = q.cdsc_format; /* local copy */
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sanitize_format(&q.cdsc_absaddr, &back, requested);
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sanitize_format(&q.cdsc_reladdr, &q.cdsc_format, requested);
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IOCTL_OUT(arg, struct cdrom_subchnl, q);
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/* cdinfo(CD_DO_IOCTL, "CDROMSUBCHNL successful\n"); */
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return 0;
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}
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case CDROMPLAYMSF: {
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struct cdrom_msf msf;
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cdinfo(CD_DO_IOCTL, "entering CDROMPLAYMSF\n");
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IOCTL_IN(arg, struct cdrom_msf, msf);
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cgc.cmd[0] = GPCMD_PLAY_AUDIO_MSF;
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cgc.cmd[3] = msf.cdmsf_min0;
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cgc.cmd[4] = msf.cdmsf_sec0;
|
||||
cgc.cmd[5] = msf.cdmsf_frame0;
|
||||
cgc.cmd[6] = msf.cdmsf_min1;
|
||||
cgc.cmd[7] = msf.cdmsf_sec1;
|
||||
cgc.cmd[8] = msf.cdmsf_frame1;
|
||||
cgc.data_direction = CGC_DATA_NONE;
|
||||
return cdo->generic_packet(cdi, &cgc);
|
||||
}
|
||||
case CDROMPLAYBLK: {
|
||||
struct cdrom_blk blk;
|
||||
cdinfo(CD_DO_IOCTL, "entering CDROMPLAYBLK\n");
|
||||
IOCTL_IN(arg, struct cdrom_blk, blk);
|
||||
cgc.cmd[0] = GPCMD_PLAY_AUDIO_10;
|
||||
cgc.cmd[2] = (blk.from >> 24) & 0xff;
|
||||
cgc.cmd[3] = (blk.from >> 16) & 0xff;
|
||||
cgc.cmd[4] = (blk.from >> 8) & 0xff;
|
||||
cgc.cmd[5] = blk.from & 0xff;
|
||||
cgc.cmd[7] = (blk.len >> 8) & 0xff;
|
||||
cgc.cmd[8] = blk.len & 0xff;
|
||||
cgc.data_direction = CGC_DATA_NONE;
|
||||
return cdo->generic_packet(cdi, &cgc);
|
||||
}
|
||||
case CDROMREADMODE2:
|
||||
return mmc_ioctl_cdrom_read_data(cdi, userptr, &cgc, cmd);
|
||||
case CDROMREADAUDIO:
|
||||
return mmc_ioctl_cdrom_read_audio(cdi, userptr);
|
||||
case CDROMSUBCHNL:
|
||||
return mmc_ioctl_cdrom_subchannel(cdi, userptr);
|
||||
case CDROMPLAYMSF:
|
||||
return mmc_ioctl_cdrom_play_msf(cdi, userptr, &cgc);
|
||||
case CDROMPLAYBLK:
|
||||
return mmc_ioctl_cdrom_play_blk(cdi, userptr, &cgc);
|
||||
case CDROMVOLCTRL:
|
||||
case CDROMVOLREAD: {
|
||||
struct cdrom_volctrl volctrl;
|
||||
char mask[sizeof(buffer)];
|
||||
unsigned short offset;
|
||||
|
||||
cdinfo(CD_DO_IOCTL, "entering CDROMVOLUME\n");
|
||||
|
||||
IOCTL_IN(arg, struct cdrom_volctrl, volctrl);
|
||||
|
||||
cgc.buffer = buffer;
|
||||
cgc.buflen = 24;
|
||||
if ((ret = cdrom_mode_sense(cdi, &cgc, GPMODE_AUDIO_CTL_PAGE, 0)))
|
||||
return ret;
|
||||
|
||||
/* originally the code depended on buffer[1] to determine
|
||||
how much data is available for transfer. buffer[1] is
|
||||
unfortunately ambigious and the only reliable way seem
|
||||
to be to simply skip over the block descriptor... */
|
||||
offset = 8 + be16_to_cpu(*(__be16 *)(buffer+6));
|
||||
|
||||
if (offset + 16 > sizeof(buffer))
|
||||
return -E2BIG;
|
||||
|
||||
if (offset + 16 > cgc.buflen) {
|
||||
cgc.buflen = offset+16;
|
||||
ret = cdrom_mode_sense(cdi, &cgc,
|
||||
GPMODE_AUDIO_CTL_PAGE, 0);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* sanity check */
|
||||
if ((buffer[offset] & 0x3f) != GPMODE_AUDIO_CTL_PAGE ||
|
||||
buffer[offset+1] < 14)
|
||||
return -EINVAL;
|
||||
|
||||
/* now we have the current volume settings. if it was only
|
||||
a CDROMVOLREAD, return these values */
|
||||
if (cmd == CDROMVOLREAD) {
|
||||
volctrl.channel0 = buffer[offset+9];
|
||||
volctrl.channel1 = buffer[offset+11];
|
||||
volctrl.channel2 = buffer[offset+13];
|
||||
volctrl.channel3 = buffer[offset+15];
|
||||
IOCTL_OUT(arg, struct cdrom_volctrl, volctrl);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* get the volume mask */
|
||||
cgc.buffer = mask;
|
||||
if ((ret = cdrom_mode_sense(cdi, &cgc,
|
||||
GPMODE_AUDIO_CTL_PAGE, 1)))
|
||||
return ret;
|
||||
|
||||
buffer[offset+9] = volctrl.channel0 & mask[offset+9];
|
||||
buffer[offset+11] = volctrl.channel1 & mask[offset+11];
|
||||
buffer[offset+13] = volctrl.channel2 & mask[offset+13];
|
||||
buffer[offset+15] = volctrl.channel3 & mask[offset+15];
|
||||
|
||||
/* set volume */
|
||||
cgc.buffer = buffer + offset - 8;
|
||||
memset(cgc.buffer, 0, 8);
|
||||
return cdrom_mode_select(cdi, &cgc);
|
||||
}
|
||||
|
||||
case CDROMVOLREAD:
|
||||
return mmc_ioctl_cdrom_volume(cdi, userptr, &cgc, cmd);
|
||||
case CDROMSTART:
|
||||
case CDROMSTOP: {
|
||||
cdinfo(CD_DO_IOCTL, "entering CDROMSTART/CDROMSTOP\n");
|
||||
cgc.cmd[0] = GPCMD_START_STOP_UNIT;
|
||||
cgc.cmd[1] = 1;
|
||||
cgc.cmd[4] = (cmd == CDROMSTART) ? 1 : 0;
|
||||
cgc.data_direction = CGC_DATA_NONE;
|
||||
return cdo->generic_packet(cdi, &cgc);
|
||||
}
|
||||
|
||||
case CDROMSTOP:
|
||||
return mmc_ioctl_cdrom_start_stop(cdi, &cgc, cmd);
|
||||
case CDROMPAUSE:
|
||||
case CDROMRESUME: {
|
||||
cdinfo(CD_DO_IOCTL, "entering CDROMPAUSE/CDROMRESUME\n");
|
||||
cgc.cmd[0] = GPCMD_PAUSE_RESUME;
|
||||
cgc.cmd[8] = (cmd == CDROMRESUME) ? 1 : 0;
|
||||
cgc.data_direction = CGC_DATA_NONE;
|
||||
return cdo->generic_packet(cdi, &cgc);
|
||||
}
|
||||
|
||||
case DVD_READ_STRUCT: {
|
||||
dvd_struct *s;
|
||||
int size = sizeof(dvd_struct);
|
||||
if (!CDROM_CAN(CDC_DVD))
|
||||
return -ENOSYS;
|
||||
if ((s = kmalloc(size, GFP_KERNEL)) == NULL)
|
||||
return -ENOMEM;
|
||||
cdinfo(CD_DO_IOCTL, "entering DVD_READ_STRUCT\n");
|
||||
if (copy_from_user(s, (dvd_struct __user *)arg, size)) {
|
||||
kfree(s);
|
||||
return -EFAULT;
|
||||
}
|
||||
if ((ret = dvd_read_struct(cdi, s))) {
|
||||
kfree(s);
|
||||
return ret;
|
||||
}
|
||||
if (copy_to_user((dvd_struct __user *)arg, s, size))
|
||||
ret = -EFAULT;
|
||||
kfree(s);
|
||||
return ret;
|
||||
}
|
||||
|
||||
case DVD_AUTH: {
|
||||
dvd_authinfo ai;
|
||||
if (!CDROM_CAN(CDC_DVD))
|
||||
return -ENOSYS;
|
||||
cdinfo(CD_DO_IOCTL, "entering DVD_AUTH\n");
|
||||
IOCTL_IN(arg, dvd_authinfo, ai);
|
||||
if ((ret = dvd_do_auth (cdi, &ai)))
|
||||
return ret;
|
||||
IOCTL_OUT(arg, dvd_authinfo, ai);
|
||||
return 0;
|
||||
}
|
||||
|
||||
case CDROM_NEXT_WRITABLE: {
|
||||
long next = 0;
|
||||
cdinfo(CD_DO_IOCTL, "entering CDROM_NEXT_WRITABLE\n");
|
||||
if ((ret = cdrom_get_next_writable(cdi, &next)))
|
||||
return ret;
|
||||
IOCTL_OUT(arg, long, next);
|
||||
return 0;
|
||||
}
|
||||
case CDROM_LAST_WRITTEN: {
|
||||
long last = 0;
|
||||
cdinfo(CD_DO_IOCTL, "entering CDROM_LAST_WRITTEN\n");
|
||||
if ((ret = cdrom_get_last_written(cdi, &last)))
|
||||
return ret;
|
||||
IOCTL_OUT(arg, long, last);
|
||||
return 0;
|
||||
}
|
||||
} /* switch */
|
||||
case CDROMRESUME:
|
||||
return mmc_ioctl_cdrom_pause_resume(cdi, &cgc, cmd);
|
||||
case DVD_READ_STRUCT:
|
||||
return mmc_ioctl_dvd_read_struct(cdi, userptr);
|
||||
case DVD_AUTH:
|
||||
return mmc_ioctl_dvd_auth(cdi, userptr);
|
||||
case CDROM_NEXT_WRITABLE:
|
||||
return mmc_ioctl_cdrom_next_writable(cdi, userptr);
|
||||
case CDROM_LAST_WRITTEN:
|
||||
return mmc_ioctl_cdrom_last_written(cdi, userptr);
|
||||
}
|
||||
|
||||
return -ENOTTY;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue