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path: root/drivers/scsi/sr.c
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Diffstat (limited to 'drivers/scsi/sr.c')
-rw-r--r--drivers/scsi/sr.c143
1 files changed, 71 insertions, 72 deletions
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 2942a4ec9bdd..8b17b35283aa 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -122,6 +122,8 @@ static void get_capabilities(struct scsi_cd *);
static unsigned int sr_check_events(struct cdrom_device_info *cdi,
unsigned int clearing, int slot);
static int sr_packet(struct cdrom_device_info *, struct packet_command *);
+static int sr_read_cdda_bpc(struct cdrom_device_info *cdi, void __user *ubuf,
+ u32 lba, u32 nr, u8 *last_sense);
static const struct cdrom_device_ops sr_dops = {
.open = sr_open,
@@ -135,8 +137,9 @@ static const struct cdrom_device_ops sr_dops = {
.get_mcn = sr_get_mcn,
.reset = sr_reset,
.audio_ioctl = sr_audio_ioctl,
- .capability = SR_CAPABILITIES,
.generic_packet = sr_packet,
+ .read_cdda_bpc = sr_read_cdda_bpc,
+ .capability = SR_CAPABILITIES,
};
static void sr_kref_release(struct kref *kref);
@@ -330,7 +333,8 @@ static int sr_done(struct scsi_cmnd *SCpnt)
int good_bytes = (result == 0 ? this_count : 0);
int block_sectors = 0;
long error_sector;
- struct scsi_cd *cd = scsi_cd(SCpnt->request->rq_disk);
+ struct request *rq = scsi_cmd_to_rq(SCpnt);
+ struct scsi_cd *cd = scsi_cd(rq->rq_disk);
#ifdef DEBUG
scmd_printk(KERN_INFO, SCpnt, "done: %x\n", result);
@@ -352,16 +356,14 @@ static int sr_done(struct scsi_cmnd *SCpnt)
break;
error_sector =
get_unaligned_be32(&SCpnt->sense_buffer[3]);
- if (SCpnt->request->bio != NULL)
- block_sectors =
- bio_sectors(SCpnt->request->bio);
+ if (rq->bio != NULL)
+ block_sectors = bio_sectors(rq->bio);
if (block_sectors < 4)
block_sectors = 4;
if (cd->device->sector_size == 2048)
error_sector <<= 2;
error_sector &= ~(block_sectors - 1);
- good_bytes = (error_sector -
- blk_rq_pos(SCpnt->request)) << 9;
+ good_bytes = (error_sector - blk_rq_pos(rq)) << 9;
if (good_bytes < 0 || good_bytes >= this_count)
good_bytes = 0;
/*
@@ -393,7 +395,7 @@ static blk_status_t sr_init_command(struct scsi_cmnd *SCpnt)
{
int block = 0, this_count, s_size;
struct scsi_cd *cd;
- struct request *rq = SCpnt->request;
+ struct request *rq = scsi_cmd_to_rq(SCpnt);
blk_status_t ret;
ret = scsi_alloc_sgtables(SCpnt);
@@ -558,53 +560,14 @@ static void sr_block_release(struct gendisk *disk, fmode_t mode)
static int sr_block_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
unsigned long arg)
{
- struct scsi_cd *cd = scsi_cd(bdev->bd_disk);
+ struct gendisk *disk = bdev->bd_disk;
+ struct scsi_cd *cd = scsi_cd(disk);
struct scsi_device *sdev = cd->device;
void __user *argp = (void __user *)arg;
int ret;
- mutex_lock(&cd->lock);
-
- ret = scsi_ioctl_block_when_processing_errors(sdev, cmd,
- (mode & FMODE_NDELAY) != 0);
- if (ret)
- goto out;
-
- scsi_autopm_get_device(sdev);
-
- /*
- * Send SCSI addressing ioctls directly to mid level, send other
- * ioctls to cdrom/block level.
- */
- switch (cmd) {
- case SCSI_IOCTL_GET_IDLUN:
- case SCSI_IOCTL_GET_BUS_NUMBER:
- ret = scsi_ioctl(sdev, cmd, argp);
- goto put;
- }
-
- ret = cdrom_ioctl(&cd->cdi, bdev, mode, cmd, arg);
- if (ret != -ENOSYS)
- goto put;
-
- ret = scsi_ioctl(sdev, cmd, argp);
-
-put:
- scsi_autopm_put_device(sdev);
-
-out:
- mutex_unlock(&cd->lock);
- return ret;
-}
-
-#ifdef CONFIG_COMPAT
-static int sr_block_compat_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
- unsigned long arg)
-{
- struct scsi_cd *cd = scsi_cd(bdev->bd_disk);
- struct scsi_device *sdev = cd->device;
- void __user *argp = compat_ptr(arg);
- int ret;
+ if (bdev_is_partition(bdev) && !capable(CAP_SYS_RAWIO))
+ return -ENOIOCTLCMD;
mutex_lock(&cd->lock);
@@ -615,32 +578,19 @@ static int sr_block_compat_ioctl(struct block_device *bdev, fmode_t mode, unsign
scsi_autopm_get_device(sdev);
- /*
- * Send SCSI addressing ioctls directly to mid level, send other
- * ioctls to cdrom/block level.
- */
- switch (cmd) {
- case SCSI_IOCTL_GET_IDLUN:
- case SCSI_IOCTL_GET_BUS_NUMBER:
- ret = scsi_compat_ioctl(sdev, cmd, argp);
- goto put;
+ if (ret != CDROMCLOSETRAY && ret != CDROMEJECT) {
+ ret = cdrom_ioctl(&cd->cdi, bdev, mode, cmd, arg);
+ if (ret != -ENOSYS)
+ goto put;
}
-
- ret = cdrom_ioctl(&cd->cdi, bdev, mode, cmd, (unsigned long)argp);
- if (ret != -ENOSYS)
- goto put;
-
- ret = scsi_compat_ioctl(sdev, cmd, argp);
+ ret = scsi_ioctl(sdev, disk, mode, cmd, argp);
put:
scsi_autopm_put_device(sdev);
-
out:
mutex_unlock(&cd->lock);
return ret;
-
}
-#endif
static unsigned int sr_block_check_events(struct gendisk *disk,
unsigned int clearing)
@@ -665,9 +615,7 @@ static const struct block_device_operations sr_bdops =
.open = sr_block_open,
.release = sr_block_release,
.ioctl = sr_block_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = sr_block_compat_ioctl,
-#endif
+ .compat_ioctl = blkdev_compat_ptr_ioctl,
.check_events = sr_block_check_events,
};
@@ -1008,6 +956,57 @@ static int sr_packet(struct cdrom_device_info *cdi,
return cgc->stat;
}
+static int sr_read_cdda_bpc(struct cdrom_device_info *cdi, void __user *ubuf,
+ u32 lba, u32 nr, u8 *last_sense)
+{
+ struct gendisk *disk = cdi->disk;
+ u32 len = nr * CD_FRAMESIZE_RAW;
+ struct scsi_request *req;
+ struct request *rq;
+ struct bio *bio;
+ int ret;
+
+ rq = blk_get_request(disk->queue, REQ_OP_DRV_IN, 0);
+ if (IS_ERR(rq))
+ return PTR_ERR(rq);
+ req = scsi_req(rq);
+
+ ret = blk_rq_map_user(disk->queue, rq, NULL, ubuf, len, GFP_KERNEL);
+ if (ret)
+ goto out_put_request;
+
+ req->cmd[0] = GPCMD_READ_CD;
+ req->cmd[1] = 1 << 2;
+ req->cmd[2] = (lba >> 24) & 0xff;
+ req->cmd[3] = (lba >> 16) & 0xff;
+ req->cmd[4] = (lba >> 8) & 0xff;
+ req->cmd[5] = lba & 0xff;
+ req->cmd[6] = (nr >> 16) & 0xff;
+ req->cmd[7] = (nr >> 8) & 0xff;
+ req->cmd[8] = nr & 0xff;
+ req->cmd[9] = 0xf8;
+ req->cmd_len = 12;
+ rq->timeout = 60 * HZ;
+ bio = rq->bio;
+
+ blk_execute_rq(disk, rq, 0);
+ if (scsi_req(rq)->result) {
+ struct scsi_sense_hdr sshdr;
+
+ scsi_normalize_sense(req->sense, req->sense_len,
+ &sshdr);
+ *last_sense = sshdr.sense_key;
+ ret = -EIO;
+ }
+
+ if (blk_rq_unmap_user(bio))
+ ret = -EFAULT;
+out_put_request:
+ blk_put_request(rq);
+ return ret;
+}
+
+
/**
* sr_kref_release - Called to free the scsi_cd structure
* @kref: pointer to embedded kref
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-09 05:08:47 +0300