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[Settings] Use a settings applicator to set the default TFTP URI.

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This commit is contained in:
Michael Brown 2008-03-21 00:26:29 +00:00
parent 720e256c50
commit 1edbcd4246
3 changed files with 43 additions and 38 deletions
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3
src/include/gpxe/dhcp.h
View File

@ -542,9 +542,6 @@ extern void find_global_dhcp_ipv4_option ( unsigned int tag,
extern void delete_dhcp_option ( struct dhcp_option_block *options,
unsigned int tag );
extern int apply_dhcp_options ( struct dhcp_option_block *options );
extern int apply_global_dhcp_options ( void );
extern int create_dhcp_request ( struct net_device *netdev, int msgtype,
struct dhcp_option_block *options,
void *data, size_t max_len,

35
src/net/dhcpopts.c
View File

@ -284,8 +284,6 @@ void register_dhcp_options ( struct dhcp_option_block *options ) {
dhcpopt_get ( options );
list_add_tail ( &options->list, &existing->list );
/* Apply all registered DHCP options */
apply_global_dhcp_options();
}
/**
@ -564,36 +562,3 @@ void delete_dhcp_option ( struct dhcp_option_block *options,
unsigned int tag ) {
set_dhcp_option ( options, tag, NULL, 0 );
}
/**
* Apply DHCP options
*
* @v options DHCP options block, or NULL
* @ret rc Return status code
*/
int apply_dhcp_options ( struct dhcp_option_block *options ) {
struct in_addr tftp_server;
struct uri *uri;
char uri_string[32];
/* Set current working URI based on TFTP server */
find_dhcp_ipv4_option ( options, DHCP_EB_SIADDR, &tftp_server );
snprintf ( uri_string, sizeof ( uri_string ),
"tftp://%s/", inet_ntoa ( tftp_server ) );
uri = parse_uri ( uri_string );
if ( ! uri )
return -ENOMEM;
churi ( uri );
uri_put ( uri );
return 0;
}
/**
* Apply global DHCP options
*
* @ret rc Return status code
*/
int apply_global_dhcp_options ( void ) {
return apply_dhcp_options ( NULL );
}

43
src/net/udp/tftp.c
View File

@ -32,6 +32,9 @@
#include <gpxe/retry.h>
#include <gpxe/features.h>
#include <gpxe/bitmap.h>
#include <gpxe/settings.h>
#include <gpxe/dhcp.h>
#include <gpxe/uri.h>
#include <gpxe/tftp.h>
/** @file
@ -1089,3 +1092,43 @@ struct uri_opener mtftp_uri_opener __uri_opener = {
.scheme = "mtftp",
.open = mtftp_open,
};
/**
* Apply TFTP configuration settings
*
* @ret rc Return status code
*/
static int tftp_apply_settings ( void ) {
static struct in_addr tftp_server = { 0 };
struct in_addr last_tftp_server;
char uri_string[32];
struct uri *uri;
/* Retrieve TFTP server setting */
last_tftp_server = tftp_server;
fetch_ipv4_setting ( NULL, DHCP_EB_SIADDR, &tftp_server );
/* If TFTP server setting has changed, set the current working
* URI to match. Do it only when the TFTP server has changed
* to try to minimise surprises to the user, who probably
* won't expect the CWURI to change just because they updated
* an unrelated setting and triggered all the settings
* applicators.
*/
if ( tftp_server.s_addr != last_tftp_server.s_addr ) {
snprintf ( uri_string, sizeof ( uri_string ),
"tftp://%s/", inet_ntoa ( tftp_server ) );
uri = parse_uri ( uri_string );
if ( ! uri )
return -ENOMEM;
churi ( uri );
uri_put ( uri );
}
return 0;
}
/** TFTP settings applicator */
struct settings_applicator tftp_settings_applicator __settings_applicator = {
.apply = tftp_apply_settings,
};