Ventoy/vtoycli/vtoycli.c

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2021-11-12 11:56:05 +00:00
/******************************************************************************
* vtoycli.c
*
* Copyright (c) 2021, longpanda <admin@ventoy.net>
*
* This program 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.
*
* This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include <stdio.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <errno.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include "vtoycli.h"
void ventoy_gen_preudo_uuid(void *uuid)
{
int i;
int fd;
fd = open("/dev/urandom", O_RDONLY);
if (fd < 0)
{
srand(time(NULL));
for (i = 0; i < 8; i++)
{
*((uint16_t *)uuid + i) = (uint16_t)(rand() & 0xFFFF);
}
}
else
{
read(fd, uuid, 16);
close(fd);
}
}
UINT64 get_disk_size_in_byte(const char *disk)
{
int fd;
int rc;
const char *pos = disk;
unsigned long long size = 0;
char diskpath[256] = {0};
char sizebuf[64] = {0};
if (strncmp(disk, "/dev/", 5) == 0)
{
pos = disk + 5;
}
// Try 1: get size from sysfs
snprintf(diskpath, sizeof(diskpath) - 1, "/sys/block/%s/size", pos);
if (access(diskpath, F_OK) >= 0)
{
fd = open(diskpath, O_RDONLY);
if (fd >= 0)
{
read(fd, sizebuf, sizeof(sizebuf));
size = strtoull(sizebuf, NULL, 10);
close(fd);
return (size * 512);
}
}
else
{
printf("%s not exist \n", diskpath);
}
printf("disk %s size %llu bytes\n", disk, (unsigned long long)size);
return size;
}
int main(int argc, char **argv)
{
if (argc < 2)
{
return 1;
}
else if (strcmp(argv[1], "fat") == 0)
{
return vtoyfat_main(argc - 1, argv + 1);
}
else if (strcmp(argv[1], "gpt") == 0)
{
return vtoygpt_main(argc - 1, argv + 1);
}
else if (strcmp(argv[1], "partresize") == 0)
{
return partresize_main(argc - 1, argv + 1);
}
else
{
return 1;
}
}