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Implement iSCSI+PXE

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This commit is contained in:
Jarrod Johnson
2011-01-07 16:50:11 -05:00
parent 0d7d0efb50
commit 499d6fb3d2
1 changed files with 38 additions and 0 deletions
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38
src/usr/autoboot.c
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@@ -153,6 +153,38 @@ struct setting skip_san_boot_setting __setting = {
* @v root_path Root path
* @ret rc Return status code
*/
int reg_root_path ( const char *root_path ) {
struct uri *uri;
int drive;
int rc;
/* Parse URI */
uri = parse_uri ( root_path );
if ( ! uri ) {
printf("Unrecognized root path, ignoring\n");
return 0; // Not necessarily an error in this case, since this is PXE and FreeBSD may have it's own thing to say, as an example
}
if ( ( drive = san_hook ( uri, 0 ) ) < 0 ) {
rc = drive;
printf ( "Could not open SAN device: %s\n",
strerror ( rc ) );
uri_put ( uri );
return 0;
}
printf ( "Registered as SAN device %#02x\n", drive );
/* Describe SAN device */
if ( ( rc = san_describe ( drive ) ) != 0 ) {
printf ( "Could not describe SAN device %#02x: %s\n",
drive, strerror ( rc ) );
uri_put(uri);
return 0;
}
//If still in function, we registered fine.
//Unclear whether uri should have it's refcnt decremented in this case
//in boot_root_path, it would not be, so matching that behavior for now
return rc;
}
int boot_root_path ( const char *root_path ) {
struct uri *uri;
int drive;
@@ -247,6 +279,7 @@ int netboot ( struct net_device *netdev ) {
struct setting pxe_boot_menu_setting
= { .tag = DHCP_PXE_BOOT_MENU };
char buf[256];
char rbuf[256];
struct in_addr next_server;
unsigned int pxe_discovery_control;
int rc;
@@ -281,6 +314,11 @@ int netboot ( struct net_device *netdev ) {
fetch_ipv4_setting ( NULL, &next_server_setting, &next_server );
fetch_string_setting ( NULL, &filename_setting, buf, sizeof ( buf ) );
if ( buf[0] ) {
fetch_string_setting ( NULL, &root_path_setting, rbuf, sizeof ( buf ) );
if ( rbuf[0] ) {
printf ( "Attempting SAN registration per root path \"%s\"\n", rbuf );
reg_root_path ( rbuf );
}
printf ( "Booting from filename \"%s\"\n", buf );
return boot_next_server_and_filename ( next_server, buf );
}