Ventoy/vtoygpt/crc32.c
2020-07-07 23:38:57 +08:00

316 lines
5.1 KiB
C

/******************************************************************************
* vtoygpt.c ---- ventoy gpt util
*
* Copyright (c) 2020, 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 <string.h>
#include <errno.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 <linux/fs.h>
#include <dirent.h>
#define VOID void
#define CHAR char
#define UINT64 unsigned long long
#define UINT32 unsigned int
#define UINT16 unsigned short
#define CHAR16 unsigned short
#define UINT8 unsigned char
UINT32 g_crc_table[256] = {
0x00000000,
0x77073096,
0xEE0E612C,
0x990951BA,
0x076DC419,
0x706AF48F,
0xE963A535,
0x9E6495A3,
0x0EDB8832,
0x79DCB8A4,
0xE0D5E91E,
0x97D2D988,
0x09B64C2B,
0x7EB17CBD,
0xE7B82D07,
0x90BF1D91,
0x1DB71064,
0x6AB020F2,
0xF3B97148,
0x84BE41DE,
0x1ADAD47D,
0x6DDDE4EB,
0xF4D4B551,
0x83D385C7,
0x136C9856,
0x646BA8C0,
0xFD62F97A,
0x8A65C9EC,
0x14015C4F,
0x63066CD9,
0xFA0F3D63,
0x8D080DF5,
0x3B6E20C8,
0x4C69105E,
0xD56041E4,
0xA2677172,
0x3C03E4D1,
0x4B04D447,
0xD20D85FD,
0xA50AB56B,
0x35B5A8FA,
0x42B2986C,
0xDBBBC9D6,
0xACBCF940,
0x32D86CE3,
0x45DF5C75,
0xDCD60DCF,
0xABD13D59,
0x26D930AC,
0x51DE003A,
0xC8D75180,
0xBFD06116,
0x21B4F4B5,
0x56B3C423,
0xCFBA9599,
0xB8BDA50F,
0x2802B89E,
0x5F058808,
0xC60CD9B2,
0xB10BE924,
0x2F6F7C87,
0x58684C11,
0xC1611DAB,
0xB6662D3D,
0x76DC4190,
0x01DB7106,
0x98D220BC,
0xEFD5102A,
0x71B18589,
0x06B6B51F,
0x9FBFE4A5,
0xE8B8D433,
0x7807C9A2,
0x0F00F934,
0x9609A88E,
0xE10E9818,
0x7F6A0DBB,
0x086D3D2D,
0x91646C97,
0xE6635C01,
0x6B6B51F4,
0x1C6C6162,
0x856530D8,
0xF262004E,
0x6C0695ED,
0x1B01A57B,
0x8208F4C1,
0xF50FC457,
0x65B0D9C6,
0x12B7E950,
0x8BBEB8EA,
0xFCB9887C,
0x62DD1DDF,
0x15DA2D49,
0x8CD37CF3,
0xFBD44C65,
0x4DB26158,
0x3AB551CE,
0xA3BC0074,
0xD4BB30E2,
0x4ADFA541,
0x3DD895D7,
0xA4D1C46D,
0xD3D6F4FB,
0x4369E96A,
0x346ED9FC,
0xAD678846,
0xDA60B8D0,
0x44042D73,
0x33031DE5,
0xAA0A4C5F,
0xDD0D7CC9,
0x5005713C,
0x270241AA,
0xBE0B1010,
0xC90C2086,
0x5768B525,
0x206F85B3,
0xB966D409,
0xCE61E49F,
0x5EDEF90E,
0x29D9C998,
0xB0D09822,
0xC7D7A8B4,
0x59B33D17,
0x2EB40D81,
0xB7BD5C3B,
0xC0BA6CAD,
0xEDB88320,
0x9ABFB3B6,
0x03B6E20C,
0x74B1D29A,
0xEAD54739,
0x9DD277AF,
0x04DB2615,
0x73DC1683,
0xE3630B12,
0x94643B84,
0x0D6D6A3E,
0x7A6A5AA8,
0xE40ECF0B,
0x9309FF9D,
0x0A00AE27,
0x7D079EB1,
0xF00F9344,
0x8708A3D2,
0x1E01F268,
0x6906C2FE,
0xF762575D,
0x806567CB,
0x196C3671,
0x6E6B06E7,
0xFED41B76,
0x89D32BE0,
0x10DA7A5A,
0x67DD4ACC,
0xF9B9DF6F,
0x8EBEEFF9,
0x17B7BE43,
0x60B08ED5,
0xD6D6A3E8,
0xA1D1937E,
0x38D8C2C4,
0x4FDFF252,
0xD1BB67F1,
0xA6BC5767,
0x3FB506DD,
0x48B2364B,
0xD80D2BDA,
0xAF0A1B4C,
0x36034AF6,
0x41047A60,
0xDF60EFC3,
0xA867DF55,
0x316E8EEF,
0x4669BE79,
0xCB61B38C,
0xBC66831A,
0x256FD2A0,
0x5268E236,
0xCC0C7795,
0xBB0B4703,
0x220216B9,
0x5505262F,
0xC5BA3BBE,
0xB2BD0B28,
0x2BB45A92,
0x5CB36A04,
0xC2D7FFA7,
0xB5D0CF31,
0x2CD99E8B,
0x5BDEAE1D,
0x9B64C2B0,
0xEC63F226,
0x756AA39C,
0x026D930A,
0x9C0906A9,
0xEB0E363F,
0x72076785,
0x05005713,
0x95BF4A82,
0xE2B87A14,
0x7BB12BAE,
0x0CB61B38,
0x92D28E9B,
0xE5D5BE0D,
0x7CDCEFB7,
0x0BDBDF21,
0x86D3D2D4,
0xF1D4E242,
0x68DDB3F8,
0x1FDA836E,
0x81BE16CD,
0xF6B9265B,
0x6FB077E1,
0x18B74777,
0x88085AE6,
0xFF0F6A70,
0x66063BCA,
0x11010B5C,
0x8F659EFF,
0xF862AE69,
0x616BFFD3,
0x166CCF45,
0xA00AE278,
0xD70DD2EE,
0x4E048354,
0x3903B3C2,
0xA7672661,
0xD06016F7,
0x4969474D,
0x3E6E77DB,
0xAED16A4A,
0xD9D65ADC,
0x40DF0B66,
0x37D83BF0,
0xA9BCAE53,
0xDEBB9EC5,
0x47B2CF7F,
0x30B5FFE9,
0xBDBDF21C,
0xCABAC28A,
0x53B39330,
0x24B4A3A6,
0xBAD03605,
0xCDD70693,
0x54DE5729,
0x23D967BF,
0xB3667A2E,
0xC4614AB8,
0x5D681B02,
0x2A6F2B94,
0xB40BBE37,
0xC30C8EA1,
0x5A05DF1B,
0x2D02EF8D
};
UINT32 VtoyCrc32(VOID *Buffer, UINT32 Length)
{
UINT32 i;
UINT8 *Ptr = Buffer;
UINT32 Crc = 0xFFFFFFFF;
for (i = 0; i < Length; i++, Ptr++)
{
Crc = (Crc >> 8) ^ g_crc_table[(UINT8) Crc ^ *Ptr];
}
return Crc ^ 0xffffffff;
}