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[Settings] Expose SMBIOS via settings API

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In particular, expose the system UUID as a setting ("smbios/uuid").
This commit is contained in:
Michael Brown
2008-03-28 15:35:06 +00:00
parent aa74a7d53c
commit feade5da6e
9 changed files with 330 additions and 139 deletions
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69
src/core/settings.c
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@@ -27,6 +27,7 @@
#include <gpxe/in.h>
#include <gpxe/vsprintf.h>
#include <gpxe/dhcp.h>
#include <gpxe/uuid.h>
#include <gpxe/settings.h>
/** @file
@@ -487,6 +488,26 @@ unsigned long fetch_uintz_setting ( struct settings *settings,
return value;
}
/**
* Fetch value of UUID setting
*
* @v settings Settings block, or NULL to search all blocks
* @v setting Setting to fetch
* @v uuid UUID to fill in
* @ret len Length of setting, or negative error
*/
int fetch_uuid_setting ( struct settings *settings, struct setting *setting,
union uuid *uuid ) {
int len;
len = fetch_setting ( settings, setting, uuid, sizeof ( *uuid ) );
if ( len < 0 )
return len;
if ( len != sizeof ( *uuid ) )
return -ERANGE;
return len;
}
/**
* Compare two settings
*
@@ -752,11 +773,11 @@ static int storef_ipv4 ( struct settings *settings, struct setting *setting,
static int fetchf_ipv4 ( struct settings *settings, struct setting *setting,
char *buf, size_t len ) {
struct in_addr ipv4;
int rc;
int raw_len;
if ( ( rc = fetch_ipv4_setting ( settings, setting, &ipv4 ) ) < 0 )
return rc;
return snprintf ( buf, len, inet_ntoa ( ipv4 ) );
if ( ( raw_len = fetch_ipv4_setting ( settings, setting, &ipv4 ) ) < 0)
return raw_len;
return snprintf ( buf, len, "%s", inet_ntoa ( ipv4 ) );
}
/** An IPv4 address setting type */
@@ -985,6 +1006,46 @@ struct setting_type setting_type_hex __setting_type = {
.fetchf = fetchf_hex,
};
/**
* Parse and store value of UUID setting
*
* @v settings Settings block
* @v setting Setting to store
* @v value Formatted setting data
* @ret rc Return status code
*/
static int storef_uuid ( struct settings *settings __unused,
struct setting *setting __unused,
const char *value __unused ) {
return -ENOTSUP;
}
/**
* Fetch and format value of UUID setting
*
* @v settings Settings block, or NULL to search all blocks
* @v setting Setting to fetch
* @v buf Buffer to contain formatted value
* @v len Length of buffer
* @ret len Length of formatted value, or negative error
*/
static int fetchf_uuid ( struct settings *settings, struct setting *setting,
char *buf, size_t len ) {
union uuid uuid;
int raw_len;
if ( ( raw_len = fetch_uuid_setting ( settings, setting, &uuid ) ) < 0)
return raw_len;
return snprintf ( buf, len, "%s", uuid_ntoa ( &uuid ) );
}
/** UUID setting type */
struct setting_type setting_type_uuid __setting_type = {
.name = "uuid",
.storef = storef_uuid,
.fetchf = fetchf_uuid,
};
/******************************************************************************
*
* Settings