1 files changed, 0 insertions, 424 deletions
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
deleted file mode 100644
index 7f053468b50d..000000000000
--- a/block/compat_ioctl.c
+++ /dev/null
@@ -1,424 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/blkdev.h>
-#include <linux/blkpg.h>
-#include <linux/blktrace_api.h>
-#include <linux/cdrom.h>
-#include <linux/compat.h>
-#include <linux/elevator.h>
-#include <linux/hdreg.h>
-#include <linux/pr.h>
-#include <linux/slab.h>
-#include <linux/syscalls.h>
-#include <linux/types.h>
-#include <linux/uaccess.h>
-
-static int compat_put_ushort(unsigned long arg, unsigned short val)
-{
-	return put_user(val, (unsigned short __user *)compat_ptr(arg));
-}
-
-static int compat_put_int(unsigned long arg, int val)
-{
-	return put_user(val, (compat_int_t __user *)compat_ptr(arg));
-}
-
-static int compat_put_uint(unsigned long arg, unsigned int val)
-{
-	return put_user(val, (compat_uint_t __user *)compat_ptr(arg));
-}
-
-static int compat_put_long(unsigned long arg, long val)
-{
-	return put_user(val, (compat_long_t __user *)compat_ptr(arg));
-}
-
-static int compat_put_ulong(unsigned long arg, compat_ulong_t val)
-{
-	return put_user(val, (compat_ulong_t __user *)compat_ptr(arg));
-}
-
-static int compat_put_u64(unsigned long arg, u64 val)
-{
-	return put_user(val, (compat_u64 __user *)compat_ptr(arg));
-}
-
-struct compat_hd_geometry {
-	unsigned char heads;
-	unsigned char sectors;
-	unsigned short cylinders;
-	u32 start;
-};
-
-static int compat_hdio_getgeo(struct gendisk *disk, struct block_device *bdev,
-			struct compat_hd_geometry __user *ugeo)
-{
-	struct hd_geometry geo;
-	int ret;
-
-	if (!ugeo)
-		return -EINVAL;
-	if (!disk->fops->getgeo)
-		return -ENOTTY;
-
-	memset(&geo, 0, sizeof(geo));
-	/*
-	 * We need to set the startsect first, the driver may
-	 * want to override it.
-	 */
-	geo.start = get_start_sect(bdev);
-	ret = disk->fops->getgeo(bdev, &geo);
-	if (ret)
-		return ret;
-
-	ret = copy_to_user(ugeo, &geo, 4);
-	ret |= put_user(geo.start, &ugeo->start);
-	if (ret)
-		ret = -EFAULT;
-
-	return ret;
-}
-
-static int compat_hdio_ioctl(struct block_device *bdev, fmode_t mode,
-		unsigned int cmd, unsigned long arg)
-{
-	unsigned long __user *p;
-	int error;
-
-	p = compat_alloc_user_space(sizeof(unsigned long));
-	error = __blkdev_driver_ioctl(bdev, mode,
-				cmd, (unsigned long)p);
-	if (error == 0) {
-		unsigned int __user *uvp = compat_ptr(arg);
-		unsigned long v;
-		if (get_user(v, p) || put_user(v, uvp))
-			error = -EFAULT;
-	}
-	return error;
-}
-
-struct compat_cdrom_read_audio {
-	union cdrom_addr	addr;
-	u8			addr_format;
-	compat_int_t		nframes;
-	compat_caddr_t		buf;
-};
-
-struct compat_cdrom_generic_command {
-	unsigned char	cmd[CDROM_PACKET_SIZE];
-	compat_caddr_t	buffer;
-	compat_uint_t	buflen;
-	compat_int_t	stat;
-	compat_caddr_t	sense;
-	unsigned char	data_direction;
-	compat_int_t	quiet;
-	compat_int_t	timeout;
-	compat_caddr_t	reserved[1];
-};
-
-static int compat_cdrom_read_audio(struct block_device *bdev, fmode_t mode,
-		unsigned int cmd, unsigned long arg)
-{
-	struct cdrom_read_audio __user *cdread_audio;
-	struct compat_cdrom_read_audio __user *cdread_audio32;
-	__u32 data;
-	void __user *datap;
-
-	cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio));
-	cdread_audio32 = compat_ptr(arg);
-
-	if (copy_in_user(&cdread_audio->addr,
-			 &cdread_audio32->addr,
-			 (sizeof(*cdread_audio32) -
-			  sizeof(compat_caddr_t))))
-		return -EFAULT;
-
-	if (get_user(data, &cdread_audio32->buf))
-		return -EFAULT;
-	datap = compat_ptr(data);
-	if (put_user(datap, &cdread_audio->buf))
-		return -EFAULT;
-
-	return __blkdev_driver_ioctl(bdev, mode, cmd,
-			(unsigned long)cdread_audio);
-}
-
-static int compat_cdrom_generic_command(struct block_device *bdev, fmode_t mode,
-		unsigned int cmd, unsigned long arg)
-{
-	struct cdrom_generic_command __user *cgc;
-	struct compat_cdrom_generic_command __user *cgc32;
-	u32 data;
-	unsigned char dir;
-	int itmp;
-
-	cgc = compat_alloc_user_space(sizeof(*cgc));
-	cgc32 = compat_ptr(arg);
-
-	if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
-	    get_user(data, &cgc32->buffer) ||
-	    put_user(compat_ptr(data), &cgc->buffer) ||
-	    copy_in_user(&cgc->buflen, &cgc32->buflen,
-			 (sizeof(unsigned int) + sizeof(int))) ||
-	    get_user(data, &cgc32->sense) ||
-	    put_user(compat_ptr(data), &cgc->sense) ||
-	    get_user(dir, &cgc32->data_direction) ||
-	    put_user(dir, &cgc->data_direction) ||
-	    get_user(itmp, &cgc32->quiet) ||
-	    put_user(itmp, &cgc->quiet) ||
-	    get_user(itmp, &cgc32->timeout) ||
-	    put_user(itmp, &cgc->timeout) ||
-	    get_user(data, &cgc32->reserved[0]) ||
-	    put_user(compat_ptr(data), &cgc->reserved[0]))
-		return -EFAULT;
-
-	return __blkdev_driver_ioctl(bdev, mode, cmd, (unsigned long)cgc);
-}
-
-struct compat_blkpg_ioctl_arg {
-	compat_int_t op;
-	compat_int_t flags;
-	compat_int_t datalen;
-	compat_caddr_t data;
-};
-
-static int compat_blkpg_ioctl(struct block_device *bdev, fmode_t mode,
-		unsigned int cmd, struct compat_blkpg_ioctl_arg __user *ua32)
-{
-	struct blkpg_ioctl_arg __user *a = compat_alloc_user_space(sizeof(*a));
-	compat_caddr_t udata;
-	compat_int_t n;
-	int err;
-
-	err = get_user(n, &ua32->op);
-	err |= put_user(n, &a->op);
-	err |= get_user(n, &ua32->flags);
-	err |= put_user(n, &a->flags);
-	err |= get_user(n, &ua32->datalen);
-	err |= put_user(n, &a->datalen);
-	err |= get_user(udata, &ua32->data);
-	err |= put_user(compat_ptr(udata), &a->data);
-	if (err)
-		return err;
-
-	return blkdev_ioctl(bdev, mode, cmd, (unsigned long)a);
-}
-
-#define BLKBSZGET_32		_IOR(0x12, 112, int)
-#define BLKBSZSET_32		_IOW(0x12, 113, int)
-#define BLKGETSIZE64_32		_IOR(0x12, 114, int)
-
-static int compat_blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
-			unsigned cmd, unsigned long arg)
-{
-	switch (cmd) {
-	case HDIO_GET_UNMASKINTR:
-	case HDIO_GET_MULTCOUNT:
-	case HDIO_GET_KEEPSETTINGS:
-	case HDIO_GET_32BIT:
-	case HDIO_GET_NOWERR:
-	case HDIO_GET_DMA:
-	case HDIO_GET_NICE:
-	case HDIO_GET_WCACHE:
-	case HDIO_GET_ACOUSTIC:
-	case HDIO_GET_ADDRESS:
-	case HDIO_GET_BUSSTATE:
-		return compat_hdio_ioctl(bdev, mode, cmd, arg);
-	case CDROMREADAUDIO:
-		return compat_cdrom_read_audio(bdev, mode, cmd, arg);
-	case CDROM_SEND_PACKET:
-		return compat_cdrom_generic_command(bdev, mode, cmd, arg);
-
-	/*
-	 * No handler required for the ones below, we just need to
-	 * convert arg to a 64 bit pointer.
-	 */
-	case BLKSECTSET:
-	/*
-	 * 0x03 -- HD/IDE ioctl's used by hdparm and friends.
-	 *         Some need translations, these do not.
-	 */
-	case HDIO_GET_IDENTITY:
-	case HDIO_DRIVE_TASK:
-	case HDIO_DRIVE_CMD:
-	/* 0x330 is reserved -- it used to be HDIO_GETGEO_BIG */
-	case 0x330:
-	/* CDROM stuff */
-	case CDROMPAUSE:
-	case CDROMRESUME:
-	case CDROMPLAYMSF:
-	case CDROMPLAYTRKIND:
-	case CDROMREADTOCHDR:
-	case CDROMREADTOCENTRY:
-	case CDROMSTOP:
-	case CDROMSTART:
-	case CDROMEJECT:
-	case CDROMVOLCTRL:
-	case CDROMSUBCHNL:
-	case CDROMMULTISESSION:
-	case CDROM_GET_MCN:
-	case CDROMRESET:
-	case CDROMVOLREAD:
-	case CDROMSEEK:
-	case CDROMPLAYBLK:
-	case CDROMCLOSETRAY:
-	case CDROM_DISC_STATUS:
-	case CDROM_CHANGER_NSLOTS:
-	case CDROM_GET_CAPABILITY:
-	/* Ignore cdrom.h about these next 5 ioctls, they absolutely do
-	 * not take a struct cdrom_read, instead they take a struct cdrom_msf
-	 * which is compatible.
-	 */
-	case CDROMREADMODE2:
-	case CDROMREADMODE1:
-	case CDROMREADRAW:
-	case CDROMREADCOOKED:
-	case CDROMREADALL:
-	/* DVD ioctls */
-	case DVD_READ_STRUCT:
-	case DVD_WRITE_STRUCT:
-	case DVD_AUTH:
-		arg = (unsigned long)compat_ptr(arg);
-	/* These intepret arg as an unsigned long, not as a pointer,
-	 * so we must not do compat_ptr() conversion. */
-	case HDIO_SET_MULTCOUNT:
-	case HDIO_SET_UNMASKINTR:
-	case HDIO_SET_KEEPSETTINGS:
-	case HDIO_SET_32BIT:
-	case HDIO_SET_NOWERR:
-	case HDIO_SET_DMA:
-	case HDIO_SET_PIO_MODE:
-	case HDIO_SET_NICE:
-	case HDIO_SET_WCACHE:
-	case HDIO_SET_ACOUSTIC:
-	case HDIO_SET_BUSSTATE:
-	case HDIO_SET_ADDRESS:
-	case CDROMEJECT_SW:
-	case CDROM_SET_OPTIONS:
-	case CDROM_CLEAR_OPTIONS:
-	case CDROM_SELECT_SPEED:
-	case CDROM_SELECT_DISC:
-	case CDROM_MEDIA_CHANGED:
-	case CDROM_DRIVE_STATUS:
-	case CDROM_LOCKDOOR:
-	case CDROM_DEBUG:
-		break;
-	default:
-		/* unknown ioctl number */
-		return -ENOIOCTLCMD;
-	}
-
-	return __blkdev_driver_ioctl(bdev, mode, cmd, arg);
-}
-
-/* Most of the generic ioctls are handled in the normal fallback path.
-   This assumes the blkdev's low level compat_ioctl always returns
-   ENOIOCTLCMD for unknown ioctls. */
-long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg)
-{
-	int ret = -ENOIOCTLCMD;
-	struct inode *inode = file->f_mapping->host;
-	struct block_device *bdev = inode->i_bdev;
-	struct gendisk *disk = bdev->bd_disk;
-	fmode_t mode = file->f_mode;
-	loff_t size;
-	unsigned int max_sectors;
-
-	/*
-	 * O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have
-	 * to updated it before every ioctl.
-	 */
-	if (file->f_flags & O_NDELAY)
-		mode |= FMODE_NDELAY;
-	else
-		mode &= ~FMODE_NDELAY;
-
-	switch (cmd) {
-	case HDIO_GETGEO:
-		return compat_hdio_getgeo(disk, bdev, compat_ptr(arg));
-	case BLKPBSZGET:
-		return compat_put_uint(arg, bdev_physical_block_size(bdev));
-	case BLKIOMIN:
-		return compat_put_uint(arg, bdev_io_min(bdev));
-	case BLKIOOPT:
-		return compat_put_uint(arg, bdev_io_opt(bdev));
-	case BLKALIGNOFF:
-		return compat_put_int(arg, bdev_alignment_offset(bdev));
-	case BLKDISCARDZEROES:
-		return compat_put_uint(arg, 0);
-	case BLKFLSBUF:
-	case BLKROSET:
-	case BLKDISCARD:
-	case BLKSECDISCARD:
-	case BLKZEROOUT:
-	/*
-	 * the ones below are implemented in blkdev_locked_ioctl,
-	 * but we call blkdev_ioctl, which gets the lock for us
-	 */
-	case BLKRRPART:
-	case BLKREPORTZONE:
-	case BLKRESETZONE:
-	case BLKGETZONESZ:
-	case BLKGETNRZONES:
-		return blkdev_ioctl(bdev, mode, cmd,
-				(unsigned long)compat_ptr(arg));
-	case BLKBSZSET_32:
-		return blkdev_ioctl(bdev, mode, BLKBSZSET,
-				(unsigned long)compat_ptr(arg));
-	case BLKPG:
-		return compat_blkpg_ioctl(bdev, mode, cmd, compat_ptr(arg));
-	case BLKRAGET:
-	case BLKFRAGET:
-		if (!arg)
-			return -EINVAL;
-		return compat_put_long(arg,
-			       (bdev->bd_bdi->ra_pages * PAGE_SIZE) / 512);
-	case BLKROGET: /* compatible */
-		return compat_put_int(arg, bdev_read_only(bdev) != 0);
-	case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */
-		return compat_put_int(arg, block_size(bdev));
-	case BLKSSZGET: /* get block device hardware sector size */
-		return compat_put_int(arg, bdev_logical_block_size(bdev));
-	case BLKSECTGET:
-		max_sectors = min_t(unsigned int, USHRT_MAX,
-				    queue_max_sectors(bdev_get_queue(bdev)));
-		return compat_put_ushort(arg, max_sectors);
-	case BLKROTATIONAL:
-		return compat_put_ushort(arg,
-					 !blk_queue_nonrot(bdev_get_queue(bdev)));
-	case BLKRASET: /* compatible, but no compat_ptr (!) */
-	case BLKFRASET:
-		if (!capable(CAP_SYS_ADMIN))
-			return -EACCES;
-		bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE;
-		return 0;
-	case BLKGETSIZE:
-		size = i_size_read(bdev->bd_inode);
-		if ((size >> 9) > ~0UL)
-			return -EFBIG;
-		return compat_put_ulong(arg, size >> 9);
-
-	case BLKGETSIZE64_32:
-		return compat_put_u64(arg, i_size_read(bdev->bd_inode));
-
-	case BLKTRACESETUP32:
-	case BLKTRACESTART: /* compatible */
-	case BLKTRACESTOP:  /* compatible */
-	case BLKTRACETEARDOWN: /* compatible */
-		ret = blk_trace_ioctl(bdev, cmd, compat_ptr(arg));
-		return ret;
-	case IOC_PR_REGISTER:
-	case IOC_PR_RESERVE:
-	case IOC_PR_RELEASE:
-	case IOC_PR_PREEMPT:
-	case IOC_PR_PREEMPT_ABORT:
-	case IOC_PR_CLEAR:
-		return blkdev_ioctl(bdev, mode, cmd,
-				(unsigned long)compat_ptr(arg));
-	default:
-		if (disk->fops->compat_ioctl)
-			ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg);
-		if (ret == -ENOIOCTLCMD)
-			ret = compat_blkdev_driver_ioctl(bdev, mode, cmd, arg);
-		return ret;
-	}
-}