linux_args.c File Reference

#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>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER)
__asmcall void	save_args (int argc, char **argv)
	Save argc and argv for later access. More...
static int	parse_kv (char *kv, struct list_head *list)
	Parse k1=v1[,k2=v2]* into linux_settings. More...
static int	parse_net_args (char *args)
	Parse –net arguments. More...
static int	parse_settings_args (char *args)
	Parse –settings arguments. More...
void	linux_args_parse ()
	Parse passed command-line arguments. More...
void	linux_args_cleanup (int flags __unused)
	Clean up requests and settings. More...
struct startup_fn startup_linux_args	__startup_fn (STARTUP_EARLY)

Variables
static int	saved_argc = 0
	Saved argc. More...
static char **	saved_argv
	Saved argv. More...
static struct option	options []
	Supported command-line options. More...

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER

)

save_args()

__asmcall void save_args	(	int	argc,
		char **	argv
	)

Save argc and argv for later access.

To be called by linuxprefix

Definition at line 40 of file linux_args.c.

{
        saved_argc = argc;
        saved_argv = argv;
}

References saved_argc, and saved_argv.

parse_kv()

static int parse_kv ( char *  kv, struct list_head *  list  )

static

Parse k1=v1[,k2=v2]* into linux_settings.

Definition at line 56 of file linux_args.c.

{
        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;
}

References DBG, linux_setting::list, list_add, malloc(), setting::name, name, NULL, strsep(), token, and value.

Referenced by parse_net_args(), and parse_settings_args().

parse_net_args()

static int parse_net_args ( char *  args )

static

Parse –net arguments.

Format is –net driver_name[,name=value]*

Definition at line 92 of file linux_args.c.

{
        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;
}

References linux_device_request::driver, INIT_LIST_HEAD, linux_device_requests, linux_device_request::list, list_add_tail, malloc(), parse_kv(), printf(), rc, linux_device_request::settings, strlen(), and strsep().

Referenced by linux_args_parse().

parse_settings_args()

static int parse_settings_args ( char *  args )

static

Parse –settings arguments.

Format is –settings name=value[,name=value]*

Definition at line 125 of file linux_args.c.

{
        return parse_kv(args, &linux_global_settings);
}

References linux_global_settings, and parse_kv().

Referenced by linux_args_parse().

linux_args_parse()

void linux_args_parse

(

)

Parse passed command-line arguments.

Definition at line 132 of file linux_args.c.

{
        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;
}

References c, getopt_long(), optarg, options, parse_net_args(), parse_settings_args(), rc, reset_getopt(), saved_argc, and saved_argv.

linux_args_cleanup()

void linux_args_cleanup

(

int flags

__unused

)

Clean up requests and settings.

Definition at line 163 of file linux_args.c.

{
        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);
        }
}

References free, linux_device_requests, linux_global_settings, linux_setting::list, list_del, list_for_each_entry_safe, and request.

__startup_fn()

struct startup_fn startup_linux_args __startup_fn

(

STARTUP_EARLY

)

Variable Documentation

saved_argc

int saved_argc = 0

static

Saved argc.

Definition at line 31 of file linux_args.c.

Referenced by linux_args_parse(), and save_args().

saved_argv

char** saved_argv

static

Saved argv.

Definition at line 33 of file linux_args.c.

Referenced by linux_args_parse(), and save_args().

options

struct option options[]

static

Initial value:

= {
        {"net", 1, NULL, 'n'},
        {"settings", 1, NULL, 's'},
        {NULL, 0, NULL, 0}
}

Supported command-line options.

Definition at line 47 of file linux_args.c.

Referenced by linux_args_parse().