summaryrefslogtreecommitdiff
path: root/drivers/ide/ide-ioctls.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/ide/ide-ioctls.c')
-rw-r--r--drivers/ide/ide-ioctls.c306
1 files changed, 0 insertions, 306 deletions
diff --git a/drivers/ide/ide-ioctls.c b/drivers/ide/ide-ioctls.c
deleted file mode 100644
index 43fbc37d85c3..000000000000
--- a/drivers/ide/ide-ioctls.c
+++ /dev/null
@@ -1,306 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * IDE ioctls handling.
- */
-
-#include <linux/compat.h>
-#include <linux/export.h>
-#include <linux/hdreg.h>
-#include <linux/ide.h>
-#include <linux/slab.h>
-
-static int put_user_long(long val, unsigned long arg)
-{
- if (in_compat_syscall())
- return put_user(val, (compat_long_t __user *)compat_ptr(arg));
-
- return put_user(val, (long __user *)arg);
-}
-
-static const struct ide_ioctl_devset ide_ioctl_settings[] = {
-{ HDIO_GET_32BIT, HDIO_SET_32BIT, &ide_devset_io_32bit },
-{ HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, &ide_devset_keepsettings },
-{ HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, &ide_devset_unmaskirq },
-{ HDIO_GET_DMA, HDIO_SET_DMA, &ide_devset_using_dma },
-{ -1, HDIO_SET_PIO_MODE, &ide_devset_pio_mode },
-{ 0 }
-};
-
-int ide_setting_ioctl(ide_drive_t *drive, struct block_device *bdev,
- unsigned int cmd, unsigned long arg,
- const struct ide_ioctl_devset *s)
-{
- const struct ide_devset *ds;
- int err = -EOPNOTSUPP;
-
- for (; (ds = s->setting); s++) {
- if (ds->get && s->get_ioctl == cmd)
- goto read_val;
- else if (ds->set && s->set_ioctl == cmd)
- goto set_val;
- }
-
- return err;
-
-read_val:
- mutex_lock(&ide_setting_mtx);
- err = ds->get(drive);
- mutex_unlock(&ide_setting_mtx);
- return err >= 0 ? put_user_long(err, arg) : err;
-
-set_val:
- if (bdev_is_partition(bdev))
- err = -EINVAL;
- else {
- if (!capable(CAP_SYS_ADMIN))
- err = -EACCES;
- else {
- mutex_lock(&ide_setting_mtx);
- err = ide_devset_execute(drive, ds, arg);
- mutex_unlock(&ide_setting_mtx);
- }
- }
- return err;
-}
-EXPORT_SYMBOL_GPL(ide_setting_ioctl);
-
-static int ide_get_identity_ioctl(ide_drive_t *drive, unsigned int cmd,
- void __user *argp)
-{
- u16 *id = NULL;
- int size = (cmd == HDIO_GET_IDENTITY) ? (ATA_ID_WORDS * 2) : 142;
- int rc = 0;
-
- if ((drive->dev_flags & IDE_DFLAG_ID_READ) == 0) {
- rc = -ENOMSG;
- goto out;
- }
-
- /* ata_id_to_hd_driveid() relies on 'id' to be fully allocated. */
- id = kmalloc(ATA_ID_WORDS * 2, GFP_KERNEL);
- if (id == NULL) {
- rc = -ENOMEM;
- goto out;
- }
-
- memcpy(id, drive->id, size);
- ata_id_to_hd_driveid(id);
-
- if (copy_to_user(argp, id, size))
- rc = -EFAULT;
-
- kfree(id);
-out:
- return rc;
-}
-
-static int ide_get_nice_ioctl(ide_drive_t *drive, unsigned long arg)
-{
- return put_user_long((!!(drive->dev_flags & IDE_DFLAG_DSC_OVERLAP)
- << IDE_NICE_DSC_OVERLAP) |
- (!!(drive->dev_flags & IDE_DFLAG_NICE1)
- << IDE_NICE_1), 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_tape))
- return -EPERM;
-
- if ((arg >> IDE_NICE_DSC_OVERLAP) & 1)
- drive->dev_flags |= IDE_DFLAG_DSC_OVERLAP;
- else
- drive->dev_flags &= ~IDE_DFLAG_DSC_OVERLAP;
-
- if ((arg >> IDE_NICE_1) & 1)
- drive->dev_flags |= IDE_DFLAG_NICE1;
- else
- drive->dev_flags &= ~IDE_DFLAG_NICE1;
-
- return 0;
-}
-
-static int ide_cmd_ioctl(ide_drive_t *drive, void __user *argp)
-{
- u8 *buf = NULL;
- int bufsize = 0, err = 0;
- u8 args[4], xfer_rate = 0;
- struct ide_cmd cmd;
- struct ide_taskfile *tf = &cmd.tf;
-
- if (NULL == argp) {
- struct request *rq;
-
- rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
- ide_req(rq)->type = ATA_PRIV_TASKFILE;
- blk_execute_rq(NULL, rq, 0);
- err = scsi_req(rq)->result ? -EIO : 0;
- blk_put_request(rq);
-
- return err;
- }
-
- if (copy_from_user(args, argp, 4))
- return -EFAULT;
-
- memset(&cmd, 0, sizeof(cmd));
- tf->feature = args[2];
- if (args[0] == ATA_CMD_SMART) {
- tf->nsect = args[3];
- tf->lbal = args[1];
- tf->lbam = ATA_SMART_LBAM_PASS;
- tf->lbah = ATA_SMART_LBAH_PASS;
- cmd.valid.out.tf = IDE_VALID_OUT_TF;
- cmd.valid.in.tf = IDE_VALID_NSECT;
- } else {
- tf->nsect = args[1];
- cmd.valid.out.tf = IDE_VALID_FEATURE | IDE_VALID_NSECT;
- cmd.valid.in.tf = IDE_VALID_NSECT;
- }
- tf->command = args[0];
- cmd.protocol = args[3] ? ATA_PROT_PIO : ATA_PROT_NODATA;
-
- if (args[3]) {
- cmd.tf_flags |= IDE_TFLAG_IO_16BIT;
- bufsize = SECTOR_SIZE * args[3];
- buf = kzalloc(bufsize, GFP_KERNEL);
- if (buf == NULL)
- return -ENOMEM;
- }
-
- if (tf->command == ATA_CMD_SET_FEATURES &&
- tf->feature == SETFEATURES_XFER &&
- tf->nsect >= XFER_SW_DMA_0) {
- xfer_rate = ide_find_dma_mode(drive, tf->nsect);
- if (xfer_rate != tf->nsect) {
- err = -EINVAL;
- goto abort;
- }
-
- cmd.tf_flags |= IDE_TFLAG_SET_XFER;
- }
-
- err = ide_raw_taskfile(drive, &cmd, buf, args[3]);
-
- args[0] = tf->status;
- args[1] = tf->error;
- args[2] = tf->nsect;
-abort:
- if (copy_to_user(argp, &args, 4))
- err = -EFAULT;
- if (buf) {
- if (copy_to_user((argp + 4), buf, bufsize))
- err = -EFAULT;
- kfree(buf);
- }
- return err;
-}
-
-static int ide_task_ioctl(ide_drive_t *drive, void __user *p)
-{
- int err = 0;
- u8 args[7];
- struct ide_cmd cmd;
-
- if (copy_from_user(args, p, 7))
- return -EFAULT;
-
- memset(&cmd, 0, sizeof(cmd));
- memcpy(&cmd.tf.feature, &args[1], 6);
- cmd.tf.command = args[0];
- cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
- cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
-
- err = ide_no_data_taskfile(drive, &cmd);
-
- args[0] = cmd.tf.command;
- memcpy(&args[1], &cmd.tf.feature, 6);
-
- if (copy_to_user(p, args, 7))
- err = -EFAULT;
-
- return err;
-}
-
-static int generic_drive_reset(ide_drive_t *drive)
-{
- struct request *rq;
- int ret = 0;
-
- rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, 0);
- ide_req(rq)->type = ATA_PRIV_MISC;
- scsi_req(rq)->cmd_len = 1;
- scsi_req(rq)->cmd[0] = REQ_DRIVE_RESET;
- blk_execute_rq(NULL, rq, 1);
- ret = scsi_req(rq)->result;
- blk_put_request(rq);
- return ret;
-}
-
-int generic_ide_ioctl(ide_drive_t *drive, struct block_device *bdev,
- unsigned int cmd, unsigned long arg)
-{
- int err;
- void __user *argp = (void __user *)arg;
-
- if (in_compat_syscall())
- argp = compat_ptr(arg);
-
- err = ide_setting_ioctl(drive, bdev, cmd, arg, ide_ioctl_settings);
- if (err != -EOPNOTSUPP)
- return err;
-
- switch (cmd) {
- case HDIO_OBSOLETE_IDENTITY:
- case HDIO_GET_IDENTITY:
- if (bdev_is_partition(bdev))
- return -EINVAL;
- return ide_get_identity_ioctl(drive, cmd, argp);
- case HDIO_GET_NICE:
- return ide_get_nice_ioctl(drive, arg);
- case HDIO_SET_NICE:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- return ide_set_nice_ioctl(drive, arg);
-#ifdef CONFIG_IDE_TASK_IOCTL
- case HDIO_DRIVE_TASKFILE:
- if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
- return -EACCES;
- /* missing compat handler for HDIO_DRIVE_TASKFILE */
- if (in_compat_syscall())
- return -ENOTTY;
- if (drive->media == ide_disk)
- return ide_taskfile_ioctl(drive, arg);
- return -ENOMSG;
-#endif
- case HDIO_DRIVE_CMD:
- if (!capable(CAP_SYS_RAWIO))
- return -EACCES;
- return ide_cmd_ioctl(drive, argp);
- case HDIO_DRIVE_TASK:
- if (!capable(CAP_SYS_RAWIO))
- return -EACCES;
- return ide_task_ioctl(drive, argp);
- case HDIO_DRIVE_RESET:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- return generic_drive_reset(drive);
- case HDIO_GET_BUSSTATE:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- if (put_user_long(BUSSTATE_ON, arg))
- return -EFAULT;
- return 0;
- case HDIO_SET_BUSSTATE:
- if (!capable(CAP_SYS_ADMIN))
- return -EACCES;
- return -EOPNOTSUPP;
- default:
- return -EINVAL;
- }
-}
-EXPORT_SYMBOL(generic_ide_ioctl);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-20 17:59:19 +0000