<h2>ledger_create</h2>

<strong>Function</strong> - Create a subordinate ledger.

<h3>SYNOPSIS</h3>

<strong>kern_return_t ledger_create</strong>

<strong>(ledger_port_t</strong> <var>parent_ledger</var>,

<strong>ledger_port_t</strong> <var>ledger_ledger</var>,

<strong>ledger_port_t</strong> <var>child_ledger</var>,

<strong>ledger_item_t</strong> <var>transfer</var><strong>);</strong>

<h3>PARAMETERS</h3>

<dt> <var>parent_ledger</var>

[in ledger send right]

The parent ledger.

<dt> <var>ledger_ledger</var>

[in ledger send right]

The wired kernel memory ledger providing the

space from which the ledger itself is drawn.

<dt> <var>child_ledger</var>

[out ledger send right]

The new child ledger, of the same resource type

as the parent ledger.

<dt> <var>transfer</var>

[in scalar]

The resource amount to transfer to the new ledger.

<h3>DESCRIPTION</h3>

The <strong>ledger_create</strong> function creates a subordinate ledger.

Resource limits can be

transferred from the parent ledger. The child ledger itself

is accounted against

the <var>ledger_ledger</var>. A new ledger inherits the remote service port.

<h3>NOTES</h3>

This interface is not implemented in OSF/1 R1.3.

A ledger limit of <strong>LEDGER_ITEM_INFINITE</strong> allows any amount (even

infinity) to be withdrawn. The root ledger has such a limit.

<h3>RETURN VALUES</h3>

<dt> <strong>KERN_RESOURCE_SHORTAGE</strong>

Transferring the resources would cause the parent ledger to exceed its

limits.

<dt> <strong>KERN_INVALID_LEDGER</strong>

<var>ledger_ledger</var> is not a wired kernel memory ledger.

<h3>RELATED INFORMATION</h3>

Functions:

<a href="ledger_transfer.html"><strong>ledger_transfer</strong></a>,

<a href="ledger_terminate.html"><strong>ledger_terminate</strong></a>,

<a href="ledger_read.html"><strong>ledger_read</strong></a>,

<a href="ledger_set_remote.html"><strong>ledger_set_remote</strong></a>.