return -EACCES;
if (copy_from_user(&p, upart, sizeof(struct blkpg_partition)))
return -EFAULT;
- if (bdev != bdev->bd_contains)
+ if (bdev_is_partition(bdev))
return -EINVAL;
if (p.pno <= 0)
start = p.start >> SECTOR_SHIFT;
length = p.length >> SECTOR_SHIFT;
- /* check for fit in a hd_struct */
- if (sizeof(sector_t) < sizeof(long long)) {
- long pstart = start, plength = length;
-
- if (pstart != start || plength != length || pstart < 0 ||
- plength < 0 || p.pno > 65535)
- return -EINVAL;
- }
-
switch (op) {
case BLKPG_ADD_PARTITION:
/* check if partition is aligned to blocksize */
{
int ret;
- if (!disk_part_scan_enabled(bdev->bd_disk) || bdev != bdev->bd_contains)
+ if (!disk_part_scan_enabled(bdev->bd_disk) || bdev_is_partition(bdev))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
uint64_t range[2];
uint64_t start, len;
struct request_queue *q = bdev_get_queue(bdev);
- struct address_space *mapping = bdev->bd_inode->i_mapping;
-
+ int err;
if (!(mode & FMODE_WRITE))
return -EBADF;
if (start + len > i_size_read(bdev->bd_inode))
return -EINVAL;
- truncate_inode_pages_range(mapping, start, start + len - 1);
+
+ err = truncate_bdev_range(bdev, mode, start, start + len - 1);
+ if (err)
+ return err;
+
return blkdev_issue_discard(bdev, start >> 9, len >> 9,
GFP_KERNEL, flags);
}
unsigned long arg)
{
uint64_t range[2];
- struct address_space *mapping;
uint64_t start, end, len;
+ int err;
if (!(mode & FMODE_WRITE))
return -EBADF;
return -EINVAL;
/* Invalidate the page cache, including dirty pages */
- mapping = bdev->bd_inode->i_mapping;
- truncate_inode_pages_range(mapping, start, end);
+ err = truncate_bdev_range(bdev, mode, start, end);
+ if (err)
+ return err;
return blkdev_issue_zeroout(bdev, start >> 9, len >> 9, GFP_KERNEL,
BLKDEV_ZERO_NOUNMAP);
}
#endif
-int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,
- unsigned cmd, unsigned long arg)
-{
- struct gendisk *disk = bdev->bd_disk;
-
- if (disk->fops->ioctl)
- return disk->fops->ioctl(bdev, mode, cmd, arg);
-
- return -ENOTTY;
-}
-/*
- * For the record: _GPL here is only because somebody decided to slap it
- * on the previous export. Sheer idiocy, since it wasn't copyrightable
- * at all and could be open-coded without any exports by anybody who cares.
- */
-EXPORT_SYMBOL_GPL(__blkdev_driver_ioctl);
-
#ifdef CONFIG_COMPAT
/*
* This is the equivalent of compat_ptr_ioctl(), to be used by block
return ops->pr_clear(bdev, c.key);
}
-/*
- * Is it an unrecognized ioctl? The correct returns are either
- * ENOTTY (final) or ENOIOCTLCMD ("I don't know this one, try a
- * fallback"). ENOIOCTLCMD gets turned into ENOTTY by the ioctl
- * code before returning.
- *
- * Confused drivers sometimes return EINVAL, which is wrong. It
- * means "I understood the ioctl command, but the parameters to
- * it were wrong".
- *
- * We should aim to just fix the broken drivers, the EINVAL case
- * should go away.
- */
-static inline int is_unrecognized_ioctl(int ret)
-{
- return ret == -EINVAL ||
- ret == -ENOTTY ||
- ret == -ENOIOCTLCMD;
-}
-
static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode,
unsigned cmd, unsigned long arg)
{
- int ret;
-
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
-
- ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);
- if (!is_unrecognized_ioctl(ret))
- return ret;
-
fsync_bdev(bdev);
invalidate_bdev(bdev);
return 0;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
- ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);
- if (!is_unrecognized_ioctl(ret))
- return ret;
if (get_user(n, (int __user *)arg))
return -EFAULT;
- set_device_ro(bdev, n);
+ if (bdev->bd_disk->fops->set_read_only) {
+ ret = bdev->bd_disk->fops->set_read_only(bdev, n);
+ if (ret)
+ return ret;
+ }
+ bdev->bd_part->policy = n;
return 0;
}
if (get_user(n, argp))
return -EFAULT;
- if (!(mode & FMODE_EXCL)) {
- bdgrab(bdev);
- if (blkdev_get(bdev, mode | FMODE_EXCL, &bdev) < 0)
- return -EBUSY;
- }
+ if (mode & FMODE_EXCL)
+ return set_blocksize(bdev, n);
+ if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode | FMODE_EXCL, &bdev)))
+ return -EBUSY;
ret = set_blocksize(bdev, n);
- if (!(mode & FMODE_EXCL))
- blkdev_put(bdev, mode | FMODE_EXCL);
+ blkdev_put(bdev, mode | FMODE_EXCL);
+
return ret;
}
}
ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);
- if (ret == -ENOIOCTLCMD)
- return __blkdev_driver_ioctl(bdev, mode, cmd, arg);
+ if (ret != -ENOIOCTLCMD)
+ return ret;
- return ret;
+ if (!bdev->bd_disk->fops->ioctl)
+ return -ENOTTY;
+ return bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);
}
EXPORT_SYMBOL_GPL(blkdev_ioctl); /* for /dev/raw */
{
int ret;
void __user *argp = compat_ptr(arg);
- struct inode *inode = file->f_mapping->host;
- struct block_device *bdev = inode->i_bdev;
+ struct block_device *bdev = I_BDEV(file->f_mapping->host);
struct gendisk *disk = bdev->bd_disk;
fmode_t mode = file->f_mode;
loff_t size;
projects / linux-2.6-microblaze.git / blobdiff