dhcp_cmd.c File Reference

DHCP management commands. More...

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <errno.h>
#include <stddef.h>
#include <string.h>
#include <assert.h>
#include <getopt.h>
#include <gpxe/netdevice.h>
#include <gpxe/in.h>
#include <gpxe/command.h>
#include <usr/dhcpmgmt.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER)
static void	dhcp_syntax (char **argv)
	"dhcp" command syntax message
static int	dhcp_exec (int argc, char **argv)
	The "dhcp" command.
static void	pxebs_syntax (char **argv)
	"pxebs" command syntax message
static int	pxebs_exec (int argc, char **argv)
	The "pxebs" command.
Variables
struct command dhcp_commands[]	__command
	DHCP management commands.

---

Detailed Description

DHCP management commands.

Definition in file dhcp_cmd.c.

---

Function Documentation

FILE_LICENCE

(

GPL2_OR_LATER

)

static void dhcp_syntax

(

char **

argv

)

[static]

"dhcp" command syntax message

Parameters:

argv

Argument list

Definition at line 46 of file dhcp_cmd.c.

References printf().

Referenced by dhcp_exec().

                                        {
        printf ( "Usage:\n"
                 "  %s <interface>\n"
                 "\n"
                 "Configure a network interface using DHCP\n",
                 argv[0] );
}

static int dhcp_exec	(	int	argc,
		char **	argv
	)			[static]

The "dhcp" command.

Parameters:

	argc	Argument count
	argv	Argument list

Return values:

rc

Exit code

Definition at line 61 of file dhcp_cmd.c.

References dhcp(), dhcp_syntax(), find_netdev(), getopt_long(), net_device::name, netdev, NULL, optind, printf(), and strerror().

                                               {
        static struct option longopts[] = {
                { "help", 0, NULL, 'h' },
                { NULL, 0, NULL, 0 },
        };
        const char *netdev_txt;
        struct net_device *netdev;
        int c;
        int rc;

        /* Parse options */
        while ( ( c = getopt_long ( argc, argv, "h", longopts, NULL ) ) >= 0 ){
                switch ( c ) {
                case 'h':
                        /* Display help text */
                default:
                        /* Unrecognised/invalid option */
                        dhcp_syntax ( argv );
                        return 1;
                }
        }

        /* Need exactly one interface name remaining after the options */
        if ( optind != ( argc - 1 ) ) {
                dhcp_syntax ( argv );
                return 1;
        }
        netdev_txt = argv[optind];

        /* Parse arguments */
        netdev = find_netdev ( netdev_txt );
        if ( ! netdev ) {
                printf ( "No such interface: %s\n", netdev_txt );
                return 1;
        }

        /* Perform DHCP */
        if ( ( rc = dhcp ( netdev ) ) != 0 ) {
                printf ( "Could not configure %s: %s\n", netdev->name,
                         strerror ( rc ) );
                return 1;
        }

        return 0;
}

static void pxebs_syntax

(

char **

argv

)

[static]

"pxebs" command syntax message

Parameters:

argv

Argument list

Definition at line 112 of file dhcp_cmd.c.

References printf().

Referenced by pxebs_exec().

                                         {
        printf ( "Usage:\n"
                 "  %s <interface> <server_type>\n"
                 "\n"
                 "Perform PXE Boot Server discovery\n",
                 argv[0] );
}

static int pxebs_exec	(	int	argc,
		char **	argv
	)			[static]

The "pxebs" command.

Parameters:

	argc	Argument count
	argv	Argument list

Return values:

rc

Exit code

Definition at line 127 of file dhcp_cmd.c.

References find_netdev(), getopt_long(), net_device::name, netdev, NULL, optind, printf(), pxebs(), pxebs_syntax(), strerror(), and strtoul().

                                                {
        static struct option longopts[] = {
                { "help", 0, NULL, 'h' },
                { NULL, 0, NULL, 0 },
        };
        const char *netdev_txt;
        const char *pxe_type_txt;
        struct net_device *netdev;
        unsigned int pxe_type;
        char *end;
        int c;
        int rc;

        /* Parse options */
        while ( ( c = getopt_long ( argc, argv, "h", longopts, NULL ) ) >= 0 ){
                switch ( c ) {
                case 'h':
                        /* Display help text */
                default:
                        /* Unrecognised/invalid option */
                        pxebs_syntax ( argv );
                        return 1;
                }
        }
        if ( optind != ( argc - 2 ) ) {
                pxebs_syntax ( argv );
                return 1;
        }
        netdev_txt = argv[optind];
        pxe_type_txt = argv[ optind + 1 ];

        /* Parse arguments */
        netdev = find_netdev ( netdev_txt );
        if ( ! netdev ) {
                printf ( "No such interface: %s\n", netdev_txt );
                return 1;
        }
        pxe_type = strtoul ( pxe_type_txt, &end, 0 );
        if ( *end ) {
                printf ( "Bad server type: %s\n", pxe_type_txt );
                return 1;
        }

        /* Perform Boot Server Discovery */
        if ( ( rc = pxebs ( netdev, pxe_type ) ) != 0 ) {
                printf ( "Could not discover boot server on %s: %s\n",
                         netdev->name, strerror ( rc ) );
                return 1;
        }

        return 0;
}

---

Variable Documentation

struct command dhcp_commands [] __command

Initial value:

 {
        {
                .name = "dhcp",
                .exec = dhcp_exec,
        },
        {
                .name = "pxebs",
                .exec = pxebs_exec,
        },
}

DHCP management commands.

Definition at line 181 of file dhcp_cmd.c.