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[Settings] Introduce settings applicators.

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Convert DHCP option applicators in dns.c and iscsi.c to settings
applicators.

Kill off DHCP option applicators.
This commit is contained in:
Michael Brown
2008-03-20 23:15:48 +00:00
parent acfa14423e
commit cf03304620
6 changed files with 221 additions and 137 deletions
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32
src/include/gpxe/settings.h
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@@ -122,6 +122,22 @@ struct named_setting {
/** Declare a configuration setting */
#define __named_setting __table ( struct named_setting, named_settings, 01 )
/**
* A settings applicator
*
*/
struct settings_applicator {
/** Apply updated settings
*
* @ret rc Return status code
*/
int ( * apply ) ( void );
};
/** Declare a settings applicator */
#define __settings_applicator \
__table ( struct settings_applicator, settings_applicators, 01 )
extern int simple_settings_store ( struct settings *settings, unsigned int tag,
const void *data, size_t len );
extern int simple_settings_fetch ( struct settings *settings, unsigned int tag,
@@ -131,6 +147,8 @@ extern struct settings_operations simple_settings_operations;
extern int register_settings ( struct settings *settings,
struct settings *parent );
extern void unregister_settings ( struct settings *settings );
extern int store_setting ( struct settings *settings, unsigned int tag,
const void *data, size_t len );
extern int fetch_setting ( struct settings *settings, unsigned int tag,
void *data, size_t len );
extern int fetch_setting_len ( struct settings *settings, unsigned int tag );
@@ -179,20 +197,6 @@ static inline void settings_init ( struct settings *settings,
settings->name = name;
}
/**
* Store value of setting
*
* @v settings Settings block
* @v tag Setting tag number
* @v data Setting data, or NULL to clear setting
* @v len Length of setting data
* @ret rc Return status code
*/
static inline int store_setting ( struct settings *settings, unsigned int tag,
const void *data, size_t len ) {
return settings->op->store ( settings, tag, data, len );
}
/**
* Delete setting
*