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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-02-12 19:36:05 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-04-26 01:06:39 +0300 |
| commit | a656d47a010b74e390c4336efc0f617886ab407c (patch) | |
| tree | 0be086607cd6334b33d668ea71adc88173870b3b /drivers/scsi/scsi_ioctl.c | |
| parent | ce5155c4f8226f4816f9f7cb88149ec275c7b0a8 (diff) | |
| download | linux-a656d47a010b74e390c4336efc0f617886ab407c.tar.xz | |
scsi_ioctl.c: switch SCSI_IOCTL_GET_IDLUN to copy_to_user()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/scsi/scsi_ioctl.c')
| -rw-r--r-- | drivers/scsi/scsi_ioctl.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index 8f3af87b6bb0..45d04b7b2643 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -211,18 +211,18 @@ static int scsi_ioctl_common(struct scsi_device *sdev, int cmd, void __user *arg } switch (cmd) { - case SCSI_IOCTL_GET_IDLUN: - if (!access_ok(arg, sizeof(struct scsi_idlun))) + case SCSI_IOCTL_GET_IDLUN: { + struct scsi_idlun v = { + .dev_id = (sdev->id & 0xff) + + ((sdev->lun & 0xff) << 8) + + ((sdev->channel & 0xff) << 16) + + ((sdev->host->host_no & 0xff) << 24), + .host_unique_id = sdev->host->unique_id + }; + if (copy_to_user(arg, &v, sizeof(struct scsi_idlun))) return -EFAULT; - - __put_user((sdev->id & 0xff) - + ((sdev->lun & 0xff) << 8) - + ((sdev->channel & 0xff) << 16) - + ((sdev->host->host_no & 0xff) << 24), - &((struct scsi_idlun __user *)arg)->dev_id); - __put_user(sdev->host->unique_id, - &((struct scsi_idlun __user *)arg)->host_unique_id); return 0; + } case SCSI_IOCTL_GET_BUS_NUMBER: return put_user(sdev->host->host_no, (int __user *)arg); case SCSI_IOCTL_PROBE_HOST: |