diff options
Diffstat (limited to 'drivers/ide/ide-disk.c')
| -rw-r--r-- | drivers/ide/ide-disk.c | 81 |
1 files changed, 68 insertions, 13 deletions
diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index e7bc4d35c40..fb162cb3ebf 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -737,6 +737,9 @@ static int set_multcount(ide_drive_t *drive, int arg) { struct request rq; + if (arg < 0 || arg > drive->id->max_multsect) + return -EINVAL; + if (drive->special.b.set_multmode) return -EBUSY; ide_init_drive_cmd (&rq); @@ -749,6 +752,9 @@ static int set_multcount(ide_drive_t *drive, int arg) static int set_nowerr(ide_drive_t *drive, int arg) { + if (arg < 0 || arg > 1) + return -EINVAL; + if (ide_spin_wait_hwgroup(drive)) return -EBUSY; drive->nowerr = arg; @@ -800,6 +806,9 @@ static int write_cache(ide_drive_t *drive, int arg) ide_task_t args; int err = 1; + if (arg < 0 || arg > 1) + return -EINVAL; + if (ide_id_has_flush_cache(drive->id)) { memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ? @@ -835,6 +844,9 @@ static int set_acoustic (ide_drive_t *drive, int arg) { ide_task_t args; + if (arg < 0 || arg > 254) + return -EINVAL; + memset(&args, 0, sizeof(ide_task_t)); args.tfRegister[IDE_FEATURE_OFFSET] = (arg) ? SETFEATURES_EN_AAM : SETFEATURES_DIS_AAM; @@ -855,6 +867,9 @@ static int set_acoustic (ide_drive_t *drive, int arg) */ static int set_lba_addressing(ide_drive_t *drive, int arg) { + if (arg < 0 || arg > 2) + return -EINVAL; + drive->addressing = 0; if (HWIF(drive)->no_lba48) @@ -870,18 +885,18 @@ static void idedisk_add_settings(ide_drive_t *drive) { struct hd_driveid *id = drive->id; - ide_add_setting(drive, "bios_cyl", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL); - ide_add_setting(drive, "bios_head", SETTING_RW, -1, -1, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); - ide_add_setting(drive, "bios_sect", SETTING_RW, -1, -1, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); - ide_add_setting(drive, "address", SETTING_RW, HDIO_GET_ADDRESS, HDIO_SET_ADDRESS, TYPE_INTA, 0, 2, 1, 1, &drive->addressing, set_lba_addressing); - ide_add_setting(drive, "bswap", SETTING_READ, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL); - ide_add_setting(drive, "multcount", id ? SETTING_RW : SETTING_READ, HDIO_GET_MULTCOUNT, HDIO_SET_MULTCOUNT, TYPE_BYTE, 0, id ? id->max_multsect : 0, 1, 1, &drive->mult_count, set_multcount); - ide_add_setting(drive, "nowerr", SETTING_RW, HDIO_GET_NOWERR, HDIO_SET_NOWERR, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr); - ide_add_setting(drive, "lun", SETTING_RW, -1, -1, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL); - ide_add_setting(drive, "wcache", SETTING_RW, HDIO_GET_WCACHE, HDIO_SET_WCACHE, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache); - ide_add_setting(drive, "acoustic", SETTING_RW, HDIO_GET_ACOUSTIC, HDIO_SET_ACOUSTIC, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic); - ide_add_setting(drive, "failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL); - ide_add_setting(drive, "max_failures", SETTING_RW, -1, -1, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL); + ide_add_setting(drive, "bios_cyl", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->bios_cyl, NULL); + ide_add_setting(drive, "bios_head", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &drive->bios_head, NULL); + ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL); + ide_add_setting(drive, "address", SETTING_RW, TYPE_BYTE, 0, 2, 1, 1, &drive->addressing, set_lba_addressing); + ide_add_setting(drive, "bswap", SETTING_READ, TYPE_BYTE, 0, 1, 1, 1, &drive->bswap, NULL); + ide_add_setting(drive, "multcount", SETTING_RW, TYPE_BYTE, 0, id->max_multsect, 1, 1, &drive->mult_count, set_multcount); + ide_add_setting(drive, "nowerr", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nowerr, set_nowerr); + ide_add_setting(drive, "lun", SETTING_RW, TYPE_INT, 0, 7, 1, 1, &drive->lun, NULL); + ide_add_setting(drive, "wcache", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->wcache, write_cache); + ide_add_setting(drive, "acoustic", SETTING_RW, TYPE_BYTE, 0, 254, 1, 1, &drive->acoustic, set_acoustic); + ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL); + ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL); } static void idedisk_setup (ide_drive_t *drive) @@ -1140,9 +1155,49 @@ static int idedisk_getgeo(struct block_device *bdev, struct hd_geometry *geo) static int idedisk_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) { + unsigned long flags; struct block_device *bdev = inode->i_bdev; struct ide_disk_obj *idkp = ide_disk_g(bdev->bd_disk); - return generic_ide_ioctl(idkp->drive, file, bdev, cmd, arg); + ide_drive_t *drive = idkp->drive; + int err, (*setfunc)(ide_drive_t *, int); + u8 *val; + + switch (cmd) { + case HDIO_GET_ADDRESS: val = &drive->addressing; goto read_val; + case HDIO_GET_MULTCOUNT: val = &drive->mult_count; goto read_val; + case HDIO_GET_NOWERR: val = &drive->nowerr; goto read_val; + case HDIO_GET_WCACHE: val = &drive->wcache; goto read_val; + case HDIO_GET_ACOUSTIC: val = &drive->acoustic; goto read_val; + case HDIO_SET_ADDRESS: setfunc = set_lba_addressing; goto set_val; + case HDIO_SET_MULTCOUNT: setfunc = set_multcount; goto set_val; + case HDIO_SET_NOWERR: setfunc = set_nowerr; goto set_val; + case HDIO_SET_WCACHE: setfunc = write_cache; goto set_val; + case HDIO_SET_ACOUSTIC: setfunc = set_acoustic; goto set_val; + } + + return generic_ide_ioctl(drive, file, bdev, cmd, arg); + +read_val: + down(&ide_setting_sem); + spin_lock_irqsave(&ide_lock, flags); + err = *val; + spin_unlock_irqrestore(&ide_lock, flags); + up(&ide_setting_sem); + return err >= 0 ? put_user(err, (long __user *)arg) : err; + +set_val: + if (bdev != bdev->bd_contains) + err = -EINVAL; + else { + if (!capable(CAP_SYS_ADMIN)) + err = -EACCES; + else { + down(&ide_setting_sem); + err = setfunc(drive, arg); + up(&ide_setting_sem); + } + } + return err; } static int idedisk_media_changed(struct gendisk *disk) |