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grub/util/grub-probe.c
Andrei Borzenkov 11aae26cc3 util/grub-probe: fix memory leaks. 
Found by: Coverity scan.
2015-01-27 22:11:52 +03:00

907 lines
22 KiB
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/* grub-probe.c - probe device information for a given path */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2006,2007,2008,2009,2010 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 <grub/types.h>
#include <grub/emu/misc.h>
#include <grub/util/misc.h>
#include <grub/device.h>
#include <grub/disk.h>
#include <grub/file.h>
#include <grub/fs.h>
#include <grub/partition.h>
#include <grub/msdos_partition.h>
#include <grub/gpt_partition.h>
#include <grub/emu/hostdisk.h>
#include <grub/emu/getroot.h>
#include <grub/term.h>
#include <grub/env.h>
#include <grub/diskfilter.h>
#include <grub/i18n.h>
#include <grub/emu/misc.h>
#include <grub/util/ofpath.h>
#include <grub/crypto.h>
#include <grub/cryptodisk.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#define _GNU_SOURCE 1
#pragma GCC diagnostic ignored "-Wmissing-prototypes"
#pragma GCC diagnostic ignored "-Wmissing-declarations"
#include <argp.h>
#pragma GCC diagnostic error "-Wmissing-prototypes"
#pragma GCC diagnostic error "-Wmissing-declarations"
#include "progname.h"
enum {
PRINT_FS,
PRINT_FS_UUID,
PRINT_FS_LABEL,
PRINT_DRIVE,
PRINT_DEVICE,
PRINT_PARTMAP,
PRINT_ABSTRACTION,
PRINT_CRYPTODISK_UUID,
PRINT_HINT_STR,
PRINT_BIOS_HINT,
PRINT_IEEE1275_HINT,
PRINT_BAREMETAL_HINT,
PRINT_EFI_HINT,
PRINT_ARC_HINT,
PRINT_COMPATIBILITY_HINT,
PRINT_MSDOS_PARTTYPE,
PRINT_GPT_PARTTYPE,
PRINT_ZERO_CHECK,
PRINT_DISK
};
static const char *targets[] =
{
[PRINT_FS] = "fs",
[PRINT_FS_UUID] = "fs_uuid",
[PRINT_FS_LABEL] = "fs_label",
[PRINT_DRIVE] = "drive",
[PRINT_DEVICE] = "device",
[PRINT_PARTMAP] = "partmap",
[PRINT_ABSTRACTION] = "abstraction",
[PRINT_CRYPTODISK_UUID] = "cryptodisk_uuid",
[PRINT_HINT_STR] = "hints_string",
[PRINT_BIOS_HINT] = "bios_hints",
[PRINT_IEEE1275_HINT] = "ieee1275_hints",
[PRINT_BAREMETAL_HINT] = "baremetal_hints",
[PRINT_EFI_HINT] = "efi_hints",
[PRINT_ARC_HINT] = "arc_hints",
[PRINT_COMPATIBILITY_HINT] = "compatibility_hint",
[PRINT_MSDOS_PARTTYPE] = "msdos_parttype",
[PRINT_GPT_PARTTYPE] = "gpt_parttype",
[PRINT_ZERO_CHECK] = "zero_check",
[PRINT_DISK] = "disk",
};
static int print = PRINT_FS;
static unsigned int argument_is_device = 0;
static char *
get_targets_string (void)
{
char **arr = xmalloc (sizeof (targets));
int len = 0;
char *str;
char *ptr;
unsigned i;
memcpy (arr, targets, sizeof (targets));
qsort (arr, ARRAY_SIZE (targets), sizeof (char *), grub_qsort_strcmp);
for (i = 0; i < ARRAY_SIZE (targets); i++)
len += grub_strlen (targets[i]) + 2;
ptr = str = xmalloc (len);
for (i = 0; i < ARRAY_SIZE (targets); i++)
{
ptr = grub_stpcpy (ptr, arr[i]);
*ptr++ = ',';
*ptr++ = ' ';
}
ptr[-2] = '\0';
free (arr);
return str;
}
static void
do_print (const char *x, void *data)
{
char delim = *(const char *) data;
grub_printf ("%s%c", x, delim);
}
static void
probe_partmap (grub_disk_t disk, char delim)
{
grub_partition_t part;
grub_disk_memberlist_t list = NULL, tmp;
if (disk->partition == NULL)
{
grub_util_info ("no partition map found for %s", disk->name);
}
for (part = disk->partition; part; part = part->parent)
printf ("%s%c", part->partmap->name, delim);
if (disk->dev->id == GRUB_DISK_DEVICE_DISKFILTER_ID)
grub_diskfilter_get_partmap (disk, do_print, &delim);
/* In case of LVM/RAID, check the member devices as well. */
if (disk->dev->memberlist)
{
list = disk->dev->memberlist (disk);
}
while (list)
{
probe_partmap (list->disk, delim);
tmp = list->next;
free (list);
list = tmp;
}
}
static void
probe_cryptodisk_uuid (grub_disk_t disk, char delim)
{
grub_disk_memberlist_t list = NULL, tmp;
/* In case of LVM/RAID, check the member devices as well. */
if (disk->dev->memberlist)
{
list = disk->dev->memberlist (disk);
}
while (list)
{
probe_cryptodisk_uuid (list->disk, delim);
tmp = list->next;
free (list);
list = tmp;
}
if (disk->dev->id == GRUB_DISK_DEVICE_CRYPTODISK_ID)
{
const char *uu = grub_util_cryptodisk_get_uuid (disk);
grub_printf ("%s%c", uu, delim);
}
}
static int
probe_raid_level (grub_disk_t disk)
{
/* disk might be NULL in the case of a LVM physical volume with no LVM
signature. Ignore such cases here. */
if (!disk)
return -1;
if (disk->dev->id != GRUB_DISK_DEVICE_DISKFILTER_ID)
return -1;
if (disk->name[0] != 'm' || disk->name[1] != 'd')
return -1;
if (!((struct grub_diskfilter_lv *) disk->data)->segments)
return -1;
return ((struct grub_diskfilter_lv *) disk->data)->segments->type;
}
static void
probe_abstraction (grub_disk_t disk, char delim)
{
grub_disk_memberlist_t list = NULL, tmp;
int raid_level;
if (disk->dev->memberlist)
list = disk->dev->memberlist (disk);
while (list)
{
probe_abstraction (list->disk, delim);
tmp = list->next;
free (list);
list = tmp;
}
if (disk->dev->id == GRUB_DISK_DEVICE_DISKFILTER_ID
&& (grub_memcmp (disk->name, "lvm/", sizeof ("lvm/") - 1) == 0 ||
grub_memcmp (disk->name, "lvmid/", sizeof ("lvmid/") - 1) == 0))
printf ("lvm%c", delim);
if (disk->dev->id == GRUB_DISK_DEVICE_DISKFILTER_ID
&& grub_memcmp (disk->name, "ldm/", sizeof ("ldm/") - 1) == 0)
printf ("ldm%c", delim);
if (disk->dev->id == GRUB_DISK_DEVICE_CRYPTODISK_ID)
grub_util_cryptodisk_get_abstraction (disk, do_print, &delim);
raid_level = probe_raid_level (disk);
if (raid_level >= 0)
{
printf ("diskfilter%c", delim);
if (disk->dev->raidname)
printf ("%s%c", disk->dev->raidname (disk), delim);
}
if (raid_level == 5)
printf ("raid5rec%c", delim);
if (raid_level == 6)
printf ("raid6rec%c", delim);
}
static void
probe (const char *path, char **device_names, char delim)
{
char **drives_names = NULL;
char **curdev, **curdrive;
char *grub_path = NULL;
int ndev = 0;
if (path != NULL)
{
grub_path = canonicalize_file_name (path);
if (! grub_path)
grub_util_error (_("failed to get canonical path of `%s'"), path);
device_names = grub_guess_root_devices (grub_path);
free (grub_path);
}
if (! device_names)
grub_util_error (_("cannot find a device for %s (is /dev mounted?)"), path);
if (print == PRINT_DEVICE)
{
for (curdev = device_names; *curdev; curdev++)
{
printf ("%s", *curdev);
putchar (delim);
}
return;
}
if (print == PRINT_DISK)
{
for (curdev = device_names; *curdev; curdev++)
{
char *disk;
disk = grub_util_get_os_disk (*curdev);
if (!disk)
{
grub_print_error ();
continue;
}
printf ("%s", disk);
putchar (delim);
free (disk);
}
return;
}
for (curdev = device_names; *curdev; curdev++)
{
grub_util_pull_device (*curdev);
ndev++;
}
drives_names = xmalloc (sizeof (drives_names[0]) * (ndev + 1));
for (curdev = device_names, curdrive = drives_names; *curdev; curdev++,
curdrive++)
{
*curdrive = grub_util_get_grub_dev (*curdev);
if (! *curdrive)
grub_util_error (_("cannot find a GRUB drive for %s. Check your device.map"),
*curdev);
}
*curdrive = 0;
if (print == PRINT_DRIVE)
{
for (curdrive = drives_names; *curdrive; curdrive++)
{
printf ("(%s)", *curdrive);
putchar (delim);
}
goto end;
}
if (print == PRINT_ZERO_CHECK)
{
for (curdev = drives_names; *curdev; curdev++)
{
grub_device_t dev = NULL;
grub_uint32_t buffer[32768];
grub_disk_addr_t addr;
grub_disk_addr_t dsize;
grub_util_info ("opening %s", *curdev);
dev = grub_device_open (*curdev);
if (! dev || !dev->disk)
grub_util_error ("%s", grub_errmsg);
dsize = grub_disk_get_size (dev->disk);
for (addr = 0; addr < dsize;
addr += sizeof (buffer) / GRUB_DISK_SECTOR_SIZE)
{
grub_size_t sz = sizeof (buffer);
grub_uint32_t *ptr;
if (sizeof (buffer) / GRUB_DISK_SECTOR_SIZE > dsize - addr)
sz = (dsize - addr) * GRUB_DISK_SECTOR_SIZE;
grub_disk_read (dev->disk, addr, 0, sz, buffer);
for (ptr = buffer; ptr < buffer + sz / sizeof (*buffer); ptr++)
if (*ptr)
{
grub_printf ("false\n");
grub_device_close (dev);
goto end;
}
}
grub_device_close (dev);
}
grub_printf ("true\n");
}
if (print == PRINT_FS || print == PRINT_FS_UUID
|| print == PRINT_FS_LABEL)
{
grub_device_t dev = NULL;
grub_fs_t fs;
grub_util_info ("opening %s", drives_names[0]);
dev = grub_device_open (drives_names[0]);
if (! dev)
grub_util_error ("%s", grub_errmsg);
fs = grub_fs_probe (dev);
if (! fs)
grub_util_error ("%s", grub_errmsg);
if (print == PRINT_FS)
{
printf ("%s", fs->name);
putchar (delim);
}
else if (print == PRINT_FS_UUID)
{
char *uuid;
if (! fs->uuid)
grub_util_error (_("%s does not support UUIDs"), fs->name);
if (fs->uuid (dev, &uuid) != GRUB_ERR_NONE)
grub_util_error ("%s", grub_errmsg);
printf ("%s", uuid);
putchar (delim);
}
else if (print == PRINT_FS_LABEL)
{
char *label;
if (! fs->label)
grub_util_error (_("filesystem `%s' does not support labels"),
fs->name);
if (fs->label (dev, &label) != GRUB_ERR_NONE)
grub_util_error ("%s", grub_errmsg);
printf ("%s", label);
putchar (delim);
}
grub_device_close (dev);
goto end;
}
for (curdrive = drives_names, curdev = device_names; *curdrive;
curdrive++, curdev++)
{
grub_device_t dev = NULL;
grub_util_info ("opening %s", *curdrive);
dev = grub_device_open (*curdrive);
if (! dev)
grub_util_error ("%s", grub_errmsg);
if (print == PRINT_HINT_STR)
{
const char *osdev = grub_util_biosdisk_get_osdev (dev->disk);
const char *ofpath = osdev ? grub_util_devname_to_ofpath (osdev) : 0;
char *biosname, *bare, *efi;
const char *map;
if (ofpath)
{
char *tmp = xmalloc (strlen (ofpath) + sizeof ("ieee1275/"));
char *p;
p = grub_stpcpy (tmp, "ieee1275/");
strcpy (p, ofpath);
printf ("--hint-ieee1275='");
grub_util_fprint_full_disk_name (stdout, tmp, dev);
printf ("' ");
free (tmp);
}
biosname = grub_util_guess_bios_drive (*curdev);
if (biosname)
{
printf ("--hint-bios=");
grub_util_fprint_full_disk_name (stdout, biosname, dev);
printf (" ");
}
free (biosname);
efi = grub_util_guess_efi_drive (*curdev);
if (efi)
{
printf ("--hint-efi=");
grub_util_fprint_full_disk_name (stdout, efi, dev);
printf (" ");
}
free (efi);
bare = grub_util_guess_baremetal_drive (*curdev);
if (bare)
{
printf ("--hint-baremetal=");
grub_util_fprint_full_disk_name (stdout, bare, dev);
printf (" ");
}
free (bare);
/* FIXME: Add ARC hint. */
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
printf ("--hint='");
grub_util_fprint_full_disk_name (stdout, map, dev);
printf ("' ");
}
if (curdrive[1])
printf (" ");
else
printf ("\n");
grub_device_close (dev);
continue;
}
if ((print == PRINT_COMPATIBILITY_HINT || print == PRINT_BIOS_HINT
|| print == PRINT_IEEE1275_HINT || print == PRINT_BAREMETAL_HINT
|| print == PRINT_EFI_HINT || print == PRINT_ARC_HINT)
&& dev->disk->dev->id != GRUB_DISK_DEVICE_HOSTDISK_ID)
{
grub_util_fprint_full_disk_name (stdout, dev->disk->name, dev);
putchar (delim);
grub_device_close (dev);
continue;
}
if (print == PRINT_COMPATIBILITY_HINT)
{
const char *map;
char *biosname;
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
grub_util_fprint_full_disk_name (stdout, map, dev);
putchar (delim);
grub_device_close (dev);
/* Compatibility hint is one device only. */
break;
}
biosname = grub_util_guess_bios_drive (*curdev);
if (biosname)
{
grub_util_fprint_full_disk_name (stdout, biosname, dev);
putchar (delim);
}
free (biosname);
grub_device_close (dev);
/* Compatibility hint is one device only. */
if (biosname)
break;
continue;
}
if (print == PRINT_BIOS_HINT)
{
char *biosname;
biosname = grub_util_guess_bios_drive (*curdev);
if (biosname)
{
grub_util_fprint_full_disk_name (stdout, biosname, dev);
putchar (delim);
}
free (biosname);
grub_device_close (dev);
continue;
}
if (print == PRINT_IEEE1275_HINT)
{
const char *osdev = grub_util_biosdisk_get_osdev (dev->disk);
char *ofpath = grub_util_devname_to_ofpath (osdev);
const char *map;
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
grub_util_fprint_full_disk_name (stdout, map, dev);
putchar (delim);
}
if (ofpath)
{
char *tmp = xmalloc (strlen (ofpath) + sizeof ("ieee1275/"));
char *p;
p = grub_stpcpy (tmp, "ieee1275/");
strcpy (p, ofpath);
grub_util_fprint_full_disk_name (stdout, tmp, dev);
free (tmp);
free (ofpath);
putchar (delim);
}
grub_device_close (dev);
continue;
}
if (print == PRINT_EFI_HINT)
{
char *biosname;
const char *map;
biosname = grub_util_guess_efi_drive (*curdev);
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
grub_util_fprint_full_disk_name (stdout, map, dev);
putchar (delim);
}
if (biosname)
{
grub_util_fprint_full_disk_name (stdout, biosname, dev);
putchar (delim);
}
free (biosname);
grub_device_close (dev);
continue;
}
if (print == PRINT_BAREMETAL_HINT)
{
char *biosname;
const char *map;
biosname = grub_util_guess_baremetal_drive (*curdev);
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
grub_util_fprint_full_disk_name (stdout, map, dev);
putchar (delim);
}
if (biosname)
{
grub_util_fprint_full_disk_name (stdout, biosname, dev);
putchar (delim);
}
free (biosname);
grub_device_close (dev);
continue;
}
if (print == PRINT_ARC_HINT)
{
const char *map;
map = grub_util_biosdisk_get_compatibility_hint (dev->disk);
if (map)
{
grub_util_fprint_full_disk_name (stdout, map, dev);
putchar (delim);
}
/* FIXME */
grub_device_close (dev);
continue;
}
if (print == PRINT_ABSTRACTION)
{
probe_abstraction (dev->disk, delim);
grub_device_close (dev);
continue;
}
if (print == PRINT_CRYPTODISK_UUID)
{
probe_cryptodisk_uuid (dev->disk, delim);
grub_device_close (dev);
continue;
}
if (print == PRINT_PARTMAP)
{
/* Check if dev->disk itself is contained in a partmap. */
probe_partmap (dev->disk, delim);
grub_device_close (dev);
continue;
}
if (print == PRINT_MSDOS_PARTTYPE)
{
if (dev->disk->partition
&& strcmp(dev->disk->partition->partmap->name, "msdos") == 0)
printf ("%02x", dev->disk->partition->msdostype);
putchar (delim);
grub_device_close (dev);
continue;
}
if (print == PRINT_GPT_PARTTYPE)
{
if (dev->disk->partition
&& strcmp (dev->disk->partition->partmap->name, "gpt") == 0)
{
struct grub_gpt_partentry gptdata;
grub_partition_t p = dev->disk->partition;
dev->disk->partition = dev->disk->partition->parent;
if (grub_disk_read (dev->disk, p->offset, p->index,
sizeof (gptdata), &gptdata) == 0)
{
grub_gpt_part_type_t gpttype;
gpttype.data1 = grub_le_to_cpu32 (gptdata.type.data1);
gpttype.data2 = grub_le_to_cpu16 (gptdata.type.data2);
gpttype.data3 = grub_le_to_cpu16 (gptdata.type.data3);
grub_memcpy (gpttype.data4, gptdata.type.data4, 8);
grub_printf ("%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
gpttype.data1, gpttype.data2,
gpttype.data3, gpttype.data4[0],
gpttype.data4[1], gpttype.data4[2],
gpttype.data4[3], gpttype.data4[4],
gpttype.data4[5], gpttype.data4[6],
gpttype.data4[7]);
}
dev->disk->partition = p;
}
putchar (delim);
grub_device_close (dev);
continue;
}
}
end:
for (curdrive = drives_names; *curdrive; curdrive++)
free (*curdrive);
free (drives_names);
}
static struct argp_option options[] = {
{"device", 'd', 0, 0,
N_("given argument is a system device, not a path"), 0},
{"device-map", 'm', N_("FILE"), 0,
N_("use FILE as the device map [default=%s]"), 0},
{"target", 't', N_("TARGET"), 0, 0, 0},
{"verbose", 'v', 0, 0, N_("print verbose messages."), 0},
{0, '0', 0, 0, N_("separate items in output using ASCII NUL characters"), 0},
{ 0, 0, 0, 0, 0, 0 }
};
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
static char *
help_filter (int key, const char *text, void *input __attribute__ ((unused)))
{
switch (key)
{
case 'm':
return xasprintf (text, DEFAULT_DEVICE_MAP);
case 't':
{
char *ret, *t = get_targets_string ();
ret = xasprintf ("%s\n%s %s [default=%s]", _("print TARGET"),
_("available targets:"), t, targets[print]);
free (t);
return ret;
}
default:
return (char *) text;
}
}
#pragma GCC diagnostic error "-Wformat-nonliteral"
struct arguments
{
char **devices;
size_t device_max;
size_t ndevices;
char *dev_map;
int zero_delim;
};
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 'd':
argument_is_device = 1;
break;
case 'm':
if (arguments->dev_map)
free (arguments->dev_map);
arguments->dev_map = xstrdup (arg);
break;
case 't':
{
int i;
for (i = PRINT_FS; i < ARRAY_SIZE (targets); i++)
if (strcmp (arg, targets[i]) == 0)
{
print = i;
break;
}
if (i == ARRAY_SIZE (targets))
argp_usage (state);
}
break;
case '0':
arguments->zero_delim = 1;
break;
case 'v':
verbosity++;
break;
case ARGP_KEY_NO_ARGS:
fprintf (stderr, "%s", _("No path or device is specified.\n"));
argp_usage (state);
break;
case ARGP_KEY_ARG:
assert (arguments->ndevices < arguments->device_max);
arguments->devices[arguments->ndevices++] = xstrdup(arg);
break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
static struct argp argp = {
options, argp_parser, N_("[OPTION]... [PATH|DEVICE]"),
N_("\
Probe device information for a given path (or device, if the -d option is given)."),
NULL, help_filter, NULL
};
int
main (int argc, char *argv[])
{
char delim;
struct arguments arguments;
grub_util_host_init (&argc, &argv);
memset (&arguments, 0, sizeof (struct arguments));
arguments.device_max = argc + 1;
arguments.devices = xmalloc ((arguments.device_max + 1)
* sizeof (arguments.devices[0]));
memset (arguments.devices, 0, (arguments.device_max + 1)
* sizeof (arguments.devices[0]));
/* Parse our arguments */
if (argp_parse (&argp, argc, argv, 0, 0, &arguments) != 0)
{
fprintf (stderr, "%s", _("Error in parsing command line arguments\n"));
exit(1);
}
if (verbosity > 1)
grub_env_set ("debug", "all");
/* Obtain ARGUMENT. */
if (arguments.ndevices != 1 && !argument_is_device)
{
char *program = xstrdup(program_name);
fprintf (stderr, _("Unknown extra argument `%s'."), arguments.devices[1]);
fprintf (stderr, "\n");
argp_help (&argp, stderr, ARGP_HELP_STD_USAGE, program);
free (program);
exit(1);
}
/* Initialize the emulated biosdisk driver. */
grub_util_biosdisk_init (arguments.dev_map ? : DEFAULT_DEVICE_MAP);
/* Initialize all modules. */
grub_init_all ();
grub_gcry_init_all ();
grub_lvm_fini ();
grub_mdraid09_fini ();
grub_mdraid1x_fini ();
grub_diskfilter_fini ();
grub_diskfilter_init ();
grub_mdraid09_init ();
grub_mdraid1x_init ();
grub_lvm_init ();
if (print == PRINT_BIOS_HINT
|| print == PRINT_IEEE1275_HINT || print == PRINT_BAREMETAL_HINT
|| print == PRINT_EFI_HINT || print == PRINT_ARC_HINT)
delim = ' ';
else
delim = '\n';
if (arguments.zero_delim)
delim = '\0';
/* Do it. */
if (argument_is_device)
probe (NULL, arguments.devices, delim);
else
probe (arguments.devices[0], NULL, delim);
if (delim == ' ')
putchar ('\n');
/* Free resources. */
grub_gcry_fini_all ();
grub_fini_all ();
grub_util_biosdisk_fini ();
{
size_t i;
for (i = 0; i < arguments.ndevices; i++)
free (arguments.devices[i]);
}
free (arguments.devices);
free (arguments.dev_map);
return 0;
}
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