58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
#ifndef _IPXE_NVO_H
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#define _IPXE_NVO_H
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/** @file
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*
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* Non-volatile stored options
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdint.h>
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#include <ipxe/dhcpopts.h>
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#include <ipxe/settings.h>
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struct nvs_device;
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struct refcnt;
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/**
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* A block of non-volatile stored options
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*/
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struct nvo_block {
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/** Settings block */
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struct settings settings;
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/** Underlying non-volatile storage device */
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struct nvs_device *nvs;
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/** Address within NVS device */
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unsigned int address;
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/** Length of options data */
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size_t len;
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/** Option-containing data */
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void *data;
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/**
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* Resize non-volatile stored option block
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*
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* @v nvo Non-volatile options block
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* @v len New size
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* @ret rc Return status code
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*/
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int ( * resize ) ( struct nvo_block *nvo, size_t len );
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/** DHCP options block */
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struct dhcp_options dhcpopts;
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};
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/** Name of non-volatile options settings block */
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#define NVO_SETTINGS_NAME "nvo"
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extern int nvo_applies ( struct settings *settings,
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const struct setting *setting );
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extern void nvo_init ( struct nvo_block *nvo, struct nvs_device *nvs,
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size_t address, size_t len,
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int ( * resize ) ( struct nvo_block *nvo, size_t len ),
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struct refcnt *refcnt );
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extern int register_nvo ( struct nvo_block *nvo, struct settings *parent );
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extern void unregister_nvo ( struct nvo_block *nvo );
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#endif /* _IPXE_NVO_H */
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