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/*
* Copyright (C) 2010 Piotr Jaroszyński <p.jaroszynski@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
FILE_LICENCE(GPL2_OR_LATER);
#include <hci/linux_args.h>
#include <getopt.h>
#include <string.h>
#include <stdio.h>
#include <ipxe/settings.h>
#include <ipxe/linux.h>
#include <ipxe/malloc.h>
#include <ipxe/init.h>
/** Saved argc */
static int saved_argc = 0;
/** Saved argv */
static char ** saved_argv;
/**
* Save argc and argv for later access.
*
* To be called by linuxprefix
*/
__asmcall void save_args(int argc, char **argv)
{
saved_argc = argc;
saved_argv = argv;
}
/** Supported command-line options */
static struct option options[] = {
{"net", 1, NULL, 'n'},
{"settings", 1, NULL, 's'},
{NULL, 0, NULL, 0}
};
/**
* Parse k1=v1[,k2=v2]* into linux_settings
*/
static int parse_kv(char *kv, struct list_head *list)
{
char *token;
char *name;
char *value;
struct linux_setting *setting;
while ((token = strsep(&kv, ",")) != NULL) {
name = strsep(&token, "=");
if (name == NULL)
continue;
value = token;
if (value == NULL) {
DBG("Bad parameter: '%s'\n", name);
continue;
}
setting = malloc(sizeof(*setting));
if (! setting)
return -1;
setting->name = name;
setting->value = value;
setting->applied = 0;
list_add(&setting->list, list);
}
return 0;
}
/**
* Parse --net arguments
*
* Format is --net driver_name[,name=value]*
*/
static int parse_net_args(char *args)
{
char *driver;
struct linux_device_request *dev_request;
int rc;
driver = strsep(&args, ",");
if (strlen(driver) == 0) {
printf("Missing driver name");
return -1;
}
dev_request = malloc(sizeof(*dev_request));
dev_request->driver = driver;
INIT_LIST_HEAD(&dev_request->settings);
list_add_tail(&dev_request->list, &linux_device_requests);
/* Parse rest of the settings */
rc = parse_kv(args, &dev_request->settings);
if (rc)
printf("Parsing net settings failed");
return rc;
}
/**
* Parse --settings arguments
*
* Format is --settings name=value[,name=value]*
*/
static int parse_settings_args(char *args)
{
return parse_kv(args, &linux_global_settings);
}
/** Parse passed command-line arguments */
void linux_args_parse()
{
int c;
int rc;
reset_getopt();
while (1) {
int option_index = 0;
c = getopt_long(saved_argc, saved_argv, "", options, &option_index);
if (c == -1)
break;
switch (c) {
case 'n':
if ((rc = parse_net_args(optarg)) != 0)
return;
break;
case 's':
if ((rc = parse_settings_args(optarg)) != 0)
return;
break;
default:
return;
}
}
return;
}
/** Clean up requests and settings */
void linux_args_cleanup(int flags __unused)
{
struct linux_device_request *request;
struct linux_device_request *rtmp;
struct linux_setting *setting;
struct linux_setting *stmp;
/* Clean up requests and their settings */
list_for_each_entry_safe(request, rtmp, &linux_device_requests, list) {
list_for_each_entry_safe(setting, stmp, &request->settings, list) {
list_del(&setting->list);
free(setting);
}
list_del(&request->list);
free(request);
}
/* Clean up global settings */
list_for_each_entry_safe(setting, stmp, &linux_global_settings, list) {
list_del(&setting->list);
free(setting);
}
}
struct startup_fn startup_linux_args __startup_fn(STARTUP_EARLY) = {
.name = "linux_args",
.startup = linux_args_parse,
.shutdown = linux_args_cleanup,
};
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