grub/util/grub-syslinux2cfg.c

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2013-12-18 04:28:05 +00:00
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2010,2012,2013 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <grub/util/misc.h>
#include <grub/i18n.h>
#include <grub/term.h>
#include <grub/font.h>
#include <grub/emu/hostdisk.h>
#define _GNU_SOURCE 1
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <argp.h>
#include <unistd.h>
#include <errno.h>
#include <grub/err.h>
#include <grub/types.h>
#include <grub/dl.h>
#include <grub/misc.h>
#include <grub/mm.h>
#include <grub/syslinux_parse.h>
#include "progname.h"
struct arguments
{
char *input;
char *root;
char *target_root;
char *cwd;
char *target_cwd;
char *output;
int verbosity;
grub_syslinux_flavour_t flav;
};
static struct argp_option options[] = {
{"target-root", 't', N_("DIR"), 0,
N_("root directory as it will be seen on runtime (default /)."), 0},
{"root", 'r', N_("DIR"), 0,
N_("root directory of the syslinux disk (default /)."), 0},
{"target-cwd", 'T', N_("DIR"), 0,
N_("current directory as it will be seen on runtime (default $pwd)."), 0},
{"cwd", 'c', N_("DIR"), 0,
N_("current directory of the syslinux disk (default $pwd)."), 0},
{"output", 'o', N_("FILE"), 0, N_("write output to FILE (default stdout)."), 0},
{"isolinux", 'i', 0, 0, N_("assume isolinux."), 0},
{"pxelinux", 'p', 0, 0, N_("assume pxelinux."), 0},
{"syslinux", 's', 0, 0, N_("assume syslinux."), 0},
{"verbose", 'v', 0, 0, N_("print verbose messages."), 0},
{ 0, 0, 0, 0, 0, 0 }
};
static error_t
argp_parser (int key, char *arg, struct argp_state *state)
{
/* Get the input argument from argp_parse, which we
know is a pointer to our arguments structure. */
struct arguments *arguments = state->input;
switch (key)
{
case 't':
free (arguments->target_root);
arguments->target_root = xstrdup (arg);
break;
case 'T':
free (arguments->target_cwd);
arguments->target_cwd = xstrdup (arg);
break;
case 'c':
free (arguments->cwd);
arguments->cwd = xstrdup (arg);
break;
case 'o':
free (arguments->output);
arguments->output = xstrdup (arg);
break;
case ARGP_KEY_ARG:
if (!arguments->input)
{
arguments->input = xstrdup (arg);
return 0;
}
return ARGP_ERR_UNKNOWN;
case 'r':
free (arguments->root);
arguments->root = xstrdup (arg);
return 0;
case 'i':
arguments->flav = GRUB_SYSLINUX_ISOLINUX;
break;
case 's':
arguments->flav = GRUB_SYSLINUX_SYSLINUX;
break;
case 'p':
arguments->flav = GRUB_SYSLINUX_PXELINUX;
break;
case 'v':
arguments->verbosity++;
break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
static struct argp argp = {
options, argp_parser, N_("[OPTIONS] FILE ROOT"),
N_("Transform syslinux config into GRUB one."),
NULL, NULL, NULL
};
int
main (int argc, char *argv[])
{
struct arguments arguments;
grub_util_host_init (&argc, &argv);
/* Check for options. */
memset (&arguments, 0, sizeof (struct arguments));
if (argp_parse (&argp, argc, argv, 0, 0, &arguments) != 0)
{
fprintf (stderr, "%s", _("Error in parsing command line arguments\n"));
exit(1);
}
if (!arguments.input)
{
fprintf (stderr, "%s", _("Missing arguments\n"));
exit(1);
}
grub_init_all ();
grub_hostfs_init ();
grub_host_init ();
char *t, *inpfull, *rootfull, *res;
t = canonicalize_file_name (arguments.input);
if (!t)
{
grub_util_error (_("cannot open `%s': %s"), arguments.input,
strerror (errno));
}
inpfull = xasprintf ("(host)/%s", t);
free (t);
t = canonicalize_file_name (arguments.root ? : "/");
if (!t)
{
grub_util_error (_("cannot open `%s': %s"), arguments.root,
strerror (errno));
}
rootfull = xasprintf ("(host)/%s", t);
free (t);
char *cwd = xstrdup (arguments.input);
char *p = strrchr (cwd, '/');
char *cwdfull;
if (p)
*p = '\0';
else
{
free (cwd);
cwd = xstrdup (".");
}
t = canonicalize_file_name (arguments.cwd ? : cwd);
if (!t)
{
grub_util_error (_("cannot open `%s': %s"), arguments.root,
strerror (errno));
}
cwdfull = xasprintf ("(host)/%s", t);
free (t);
res = grub_syslinux_config_file (rootfull, arguments.target_root ? : "/",
cwdfull, arguments.target_cwd ? : cwd,
inpfull, arguments.flav);
if (!res)
grub_util_error ("%s", grub_errmsg);
if (arguments.output)
{
FILE *f = grub_util_fopen (arguments.output, "wb");
if (!f)
grub_util_error (_("cannot open `%s': %s"), arguments.output,
strerror (errno));
fwrite (res, 1, strlen (res), f);
fclose (f);
}
else
printf ("%s\n", res);
free (res);
free (rootfull);
free (inpfull);
free (arguments.root);
free (arguments.output);
free (arguments.target_root);
free (arguments.input);
free (cwdfull);
free (cwd);
return 0;
}