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[nvo] Allow resizing of non-volatile stored option blocks

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2011-01-11 00:53:50 +00:00
parent 1651d4f6d7
commit 17d28f4877
8 changed files with 120 additions and 54 deletions
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1
src/include/ipxe/dhcpopts.h
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@@ -36,6 +36,7 @@ extern void dhcpopt_init ( struct dhcp_options *options,
void *data, size_t alloc_len,
int ( * realloc ) ( struct dhcp_options *options,
size_t len ) );
extern void dhcpopt_update_used_len ( struct dhcp_options *options );
extern int dhcpopt_no_realloc ( struct dhcp_options *options, size_t len );
#endif /* _IPXE_DHCPOPTS_H */

12
src/include/ipxe/nvo.h
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@@ -30,12 +30,22 @@ struct nvo_block {
size_t len;
/** Option-containing data */
void *data;
/**
* Resize non-volatile stored option block
*
* @v nvo Non-volatile options block
* @v len New size
* @ret rc Return status code
*/
int ( * resize ) ( struct nvo_block *nvo, size_t len );
/** DHCP options block */
struct dhcp_options dhcpopts;
};
extern void nvo_init ( struct nvo_block *nvo, struct nvs_device *nvs,
size_t address, size_t len, struct refcnt *refcnt );
size_t address, size_t len,
int ( * resize ) ( struct nvo_block *nvo, size_t len ),
struct refcnt *refcnt );
extern int register_nvo ( struct nvo_block *nvo, struct settings *parent );
extern void unregister_nvo ( struct nvo_block *nvo );