diff options
Diffstat (limited to 'drivers/ide/ide.c')
| -rw-r--r-- | drivers/ide/ide.c | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index 4d0c661e78a5..12618d2aed2c 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -558,6 +558,28 @@ out: return rc; } +static int ide_get_nice_ioctl(ide_drive_t *drive, unsigned long arg) +{ + return put_user((drive->dsc_overlap << IDE_NICE_DSC_OVERLAP) | + (drive->nice1 << IDE_NICE_1), (long __user *)arg); +} + +static int ide_set_nice_ioctl(ide_drive_t *drive, unsigned long arg) +{ + if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) + return -EPERM; + + if (((arg >> IDE_NICE_DSC_OVERLAP) & 1) && + (drive->media == ide_disk || drive->media == ide_floppy || + drive->scsi)) + return -EPERM; + + drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; + drive->nice1 = (arg >> IDE_NICE_1) & 1; + + return 0; +} + int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, unsigned int cmd, unsigned long arg) { @@ -583,9 +605,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device return -EINVAL; return ide_get_identity_ioctl(drive, cmd, arg); case HDIO_GET_NICE: - return put_user(drive->dsc_overlap << IDE_NICE_DSC_OVERLAP | - drive->nice1 << IDE_NICE_1, - (long __user *) arg); + return ide_get_nice_ioctl(drive, arg); #ifdef CONFIG_IDE_TASK_IOCTL case HDIO_DRIVE_TASKFILE: if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) @@ -608,17 +628,9 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device return -EACCES; return ide_task_ioctl(drive, cmd, arg); case HDIO_SET_NICE: - if (!capable(CAP_SYS_ADMIN)) return -EACCES; - if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1)))) - return -EPERM; - if (((arg >> IDE_NICE_DSC_OVERLAP) & 1) && - (drive->media == ide_disk || - drive->media == ide_floppy || - drive->scsi)) - return -EPERM; - drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1; - drive->nice1 = (arg >> IDE_NICE_1) & 1; - return 0; + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; + return ide_set_nice_ioctl(drive, arg); case HDIO_DRIVE_RESET: if (!capable(CAP_SYS_ADMIN)) return -EACCES; |