Commit de91fba7 authored by Colin Watson's avatar Colin Watson

Restore grub-mkdevicemap

This is kind of a mess, requiring lots of OS-specific code to iterate
over all possible devices.  However, we use it in a number of scripts to
discover devices and reimplementing those in terms of something else
would be very complicated.

Author: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Forwarded: no
Last-Update: 2018-03-16

Patch-Name: restore_mkdevicemap.patch
parent 67aeec64
......@@ -314,6 +314,23 @@ program = {
condition = COND_GRUB_MKFONT;
};
program = {
name = grub-mkdevicemap;
installdir = sbin;
mansection = 8;
common = util/grub-mkdevicemap.c;
common = util/deviceiter.c;
common = util/devicemap.c;
common = grub-core/osdep/init.c;
ldadd = libgrubmods.a;
ldadd = libgrubgcry.a;
ldadd = libgrubkern.a;
ldadd = grub-core/gnulib/libgnu.a;
ldadd = '$(LIBINTL) $(LIBDEVMAPPER) $(LIBUTIL) $(LIBZFS) $(LIBNVPAIR) $(LIBGEOM)';
};
program = {
name = grub-probe;
installdir = sbin;
......
[NAME]
grub-mkdevicemap \- make a device map file automatically
[SEE ALSO]
.BR grub-probe (8)
#ifndef GRUB_DEVICEITER_MACHINE_UTIL_HEADER
#define GRUB_DEVICEITER_MACHINE_UTIL_HEADER 1
#include <config.h>
typedef int (*grub_util_iterate_devices_hook_t) (const char *name,
int is_floppy, void *data);
void grub_util_iterate_devices (grub_util_iterate_devices_hook_t hook,
void *hook_data, int floppy_disks);
void grub_util_emit_devicemap_entry (FILE *fp, char *name, int is_floppy,
int *num_fd, int *num_hd);
#endif /* ! GRUB_DEVICEITER_MACHINE_UTIL_HEADER */
This diff is collapsed.
#include <stdio.h>
#include <grub/util/deviceiter.h>
void
grub_util_emit_devicemap_entry (FILE *fp, char *name, int is_floppy,
int *num_fd, int *num_hd)
{
if (is_floppy)
fprintf (fp, "(fd%d)\t%s\n", (*num_fd)++, name);
else
fprintf (fp, "(hd%d)\t%s\n", (*num_hd)++, name);
}
/* grub-mkdevicemap.c - make a device map file automatically */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2007,2008,2009,2010 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 <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <grub/emu/misc.h>
#include <grub/emu/hostdisk.h>
#include <grub/util/misc.h>
#include <grub/util/deviceiter.h>
#include <grub/env.h>
#include <grub/i18n.h>
#define _GNU_SOURCE 1
#include <getopt.h>
#include "progname.h"
/* Context for make_device_map. */
struct make_device_map_ctx
{
FILE *fp;
int num_fd;
int num_hd;
};
/* Helper for make_device_map. */
static int
process_device (const char *name, int is_floppy, void *data)
{
struct make_device_map_ctx *ctx = data;
grub_util_emit_devicemap_entry (ctx->fp, (char *) name,
is_floppy, &ctx->num_fd, &ctx->num_hd);
return 0;
}
static void
make_device_map (const char *device_map, int floppy_disks)
{
struct make_device_map_ctx ctx = {
.num_fd = 0,
.num_hd = 0
};
if (strcmp (device_map, "-") == 0)
ctx.fp = stdout;
else
ctx.fp = fopen (device_map, "w");
if (! ctx.fp)
grub_util_error (_("cannot open %s"), device_map);
grub_util_iterate_devices (process_device, &ctx, floppy_disks);
if (ctx.fp != stdout)
fclose (ctx.fp);
}
static struct option options[] =
{
{"device-map", required_argument, 0, 'm'},
{"probe-second-floppy", no_argument, 0, 's'},
{"no-floppy", no_argument, 0, 'n'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"verbose", no_argument, 0, 'v'},
{0, 0, 0, 0}
};
static void
usage (int status)
{
if (status)
fprintf (stderr,
_("Try `%s --help' for more information.\n"), program_name);
else
printf (_("\
Usage: %s [OPTION]...\n\
\n\
Generate a device map file automatically.\n\
\n\
-n, --no-floppy do not probe any floppy drive\n\
-s, --probe-second-floppy probe the second floppy drive\n\
-m, --device-map=FILE use FILE as the device map [default=%s]\n\
-h, --help display this message and exit\n\
-V, --version print version information and exit\n\
-v, --verbose print verbose messages\n\
\n\
Report bugs to <%s>.\n\
"), program_name,
DEFAULT_DEVICE_MAP, PACKAGE_BUGREPORT);
exit (status);
}
int
main (int argc, char *argv[])
{
char *dev_map = 0;
int floppy_disks = 1;
grub_util_host_init (&argc, &argv);
/* Check for options. */
while (1)
{
int c = getopt_long (argc, argv, "snm:r:hVv", options, 0);
if (c == -1)
break;
else
switch (c)
{
case 'm':
if (dev_map)
free (dev_map);
dev_map = xstrdup (optarg);
break;
case 'n':
floppy_disks = 0;
break;
case 's':
floppy_disks = 2;
break;
case 'h':
usage (0);
break;
case 'V':
printf ("%s (%s) %s\n", program_name, PACKAGE_NAME, PACKAGE_VERSION);
return 0;
case 'v':
verbosity++;
break;
default:
usage (1);
break;
}
}
if (verbosity > 1)
grub_env_set ("debug", "all");
make_device_map (dev_map ? : DEFAULT_DEVICE_MAP, floppy_disks);
free (dev_map);
return 0;
}
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