blkdev_get_by

Name:lkdev_get_by_path - open a block device by name*@path: path to the block device to open*@mode: FMODE_* mask*@holder: exclusive holder identifier* Open the blockdevice described by the device file at @path. @mode* and @holder are identical to blkdev_get().

Proto:struct block_device *blkdev_get_by_path(const char *path, fmode_t mode, void *holder)

Type:struct block_device

Parameter:

Type	Parameter	Name
const char *	path
fmode_t	mode
void *	holder

1791

bdev = lookup_bdev - lookup a struct block_device by name*@pathname: special file representing the block device* Get a reference to the blockdevice at @pathname in the current* namespace if possible and return it. Return ERR_PTR(error)* otherwise.

1792

If IS_ERR(bdev) Then Return bdev

1795

err = lkdev_get - open a block device*@bdev: block_device to open*@mode: FMODE_* mask*@holder: exclusive holder identifier* Open @bdev with @mode. If @mode includes %FMODE_EXCL, @bdev is* open with exclusive access. Specifying %FMODE_EXCL with %NULL

1796

If err Then Return ERR_PTR(err)

1799

If mode & le is open for writing && bdev_read_only(bdev) Then

1800

blkdev_put(bdev, mode)

1801

Return ERR_PTR( - EACCES)

1804

Return bdev

**Caller**
Name	Describe
mount_bdev

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Function report