diff options
Diffstat (limited to 'drivers/scsi/scsi_ioctl.c')
| -rw-r--r-- | drivers/scsi/scsi_ioctl.c | 60 |
1 files changed, 20 insertions, 40 deletions
diff --git a/drivers/scsi/scsi_ioctl.c b/drivers/scsi/scsi_ioctl.c index 0d13610cd6bf..7b2e3cc85e66 100644 --- a/drivers/scsi/scsi_ioctl.c +++ b/drivers/scsi/scsi_ioctl.c @@ -189,8 +189,17 @@ static int scsi_ioctl_get_pci(struct scsi_device *sdev, void __user *arg) ? -EFAULT: 0; } - -static int scsi_ioctl_common(struct scsi_device *sdev, int cmd, void __user *arg) +/** + * scsi_ioctl - Dispatch ioctl to scsi device + * @sdev: scsi device receiving ioctl + * @cmd: which ioctl is it + * @arg: data associated with ioctl + * + * Description: The scsi_ioctl() function differs from most ioctls in that it + * does not take a major/minor number as the dev field. Rather, it takes + * a pointer to a &struct scsi_device. + */ +int scsi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) { char scsi_cmd[MAX_COMMAND_SIZE]; struct scsi_sense_hdr sense_hdr; @@ -258,48 +267,19 @@ static int scsi_ioctl_common(struct scsi_device *sdev, int cmd, void __user *arg case SG_SCSI_RESET: return scsi_ioctl_reset(sdev, arg); } - return -ENOIOCTLCMD; -} - -/** - * scsi_ioctl - Dispatch ioctl to scsi device - * @sdev: scsi device receiving ioctl - * @cmd: which ioctl is it - * @arg: data associated with ioctl - * - * Description: The scsi_ioctl() function differs from most ioctls in that it - * does not take a major/minor number as the dev field. Rather, it takes - * a pointer to a &struct scsi_device. - */ -int scsi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) -{ - int ret = scsi_ioctl_common(sdev, cmd, arg); - - if (ret != -ENOIOCTLCMD) - return ret; - - if (sdev->host->hostt->ioctl) - return sdev->host->hostt->ioctl(sdev, cmd, arg); - - return -EINVAL; -} -EXPORT_SYMBOL(scsi_ioctl); #ifdef CONFIG_COMPAT -int scsi_compat_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) -{ - int ret = scsi_ioctl_common(sdev, cmd, arg); - - if (ret != -ENOIOCTLCMD) - return ret; - - if (sdev->host->hostt->compat_ioctl) + if (in_compat_syscall()) { + if (!sdev->host->hostt->compat_ioctl) + return -EINVAL; return sdev->host->hostt->compat_ioctl(sdev, cmd, arg); - - return ret; -} -EXPORT_SYMBOL(scsi_compat_ioctl); + } #endif + if (!sdev->host->hostt->ioctl) + return -EINVAL; + return sdev->host->hostt->ioctl(sdev, cmd, arg); +} +EXPORT_SYMBOL(scsi_ioctl); /* * We can process a reset even when a device isn't fully operable. |