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/*
* Copyright (c) 2006 Dell, Inc.
* by Matt Domsch <Matt_Domsch@dell.com>
* Licensed under the GNU General Public license, version 2.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include "libbiosdevname.h"
#include "bios_dev_name.h"
static struct bios_dev_name_opts opts;
static void usage(void)
{
fprintf(stderr, "Usage: biosdevname [options] [args]...\n");
fprintf(stderr, " Options:\n");
fprintf(stderr, " -i or --interface treat [args] as ethernet devs\n");
fprintf(stderr, " -d or --debug enable debugging\n");
fprintf(stderr, " --policy [physical | all_ethN ]\n");
fprintf(stderr, " --prefix [string] string use for embedded NICs (default='em')\n");
fprintf(stderr, " Example: biosdevname -i eth0\n");
fprintf(stderr, " returns: em1\n");
fprintf(stderr, " when eth0 is an embedded NIC with label '1' on the chassis.\n");
fprintf(stderr, " You must be root to run this, as it must read from /dev/mem.\n");
}
static int
set_policy(const char *arg)
{
int rc = physical;
if (!strncmp("physical", arg, sizeof("physical")))
rc = physical;
else if (!strncmp("all_ethN", arg, sizeof("all_ethN")))
rc = all_ethN;
return rc;
}
static void
parse_opts(int argc, char **argv)
{
int c;
int option_index = 0;
while (1) {
static struct option long_options[] =
/* name, has_arg, flag, val */
{
{"debug", no_argument, 0, 'd'},
{"interface", no_argument, 0, 'i'},
{"policy", required_argument, 0, 'p'},
{"prefix", required_argument, 0, 'P'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv,
"dinp:",
long_options, &option_index);
if (c == -1)
break;
switch(c) {
case 'd':
opts.debug = 1;
break;
case 'i':
opts.interface = 1;
break;
case 'p':
opts.namingpolicy = set_policy(optarg);
break;
case 'P':
opts.prefix = optarg;
break;
default:
usage();
exit(1);
}
}
if (optind < argc) {
opts.argc = argc-optind;
opts.argv = &argv[optind];
opts.optind = optind;
}
if (opts.prefix == NULL)
opts.prefix = "em";
}
int main(int argc, char *argv[])
{
int i, rc=0;
char *name;
void *cookie = NULL;
parse_opts(argc, argv);
cookie = setup_bios_devices(opts.namingpolicy, opts.prefix);
if (!cookie) {
rc = 1;
goto out;
}
if (opts.debug) {
unparse_bios_devices(cookie);
rc = 0;
goto out_cleanup;
}
if (!opts.interface) {
fprintf(stderr, "Unknown device type, try passing an option like -i\n");
rc = 1;
goto out_usage;
}
for (i=0; i<opts.argc; i++) {
name = kern_to_bios(cookie, opts.argv[i]);
if (name) {
printf("%s\n", name);
}
else
rc |= 2; /* one or more given devices weren't found */
}
goto out_cleanup;
out_usage:
usage();
out_cleanup:
cleanup_bios_devices(cookie);
out:
return rc;
}
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