SCSI Read(10)是一種用于從SCSI設(shè)備讀取數(shù)據(jù)的命令。下面是一個(gè)簡(jiǎn)單的示例代碼，演示如何使用SCSI Read(10)命令來讀取指定大小的文件：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>#define READ_CAPACITY_CMD    0x25
#define READ_10_CMD          0x28#define DATA_BUFFER_SIZE     4096void scsi_read(FILE* scsi_device, unsigned long long start_sector, unsigned int block_size, unsigned int num_blocks)
{unsigned char read_buffer[DATA_BUFFER_SIZE];unsigned char read_cmd[10] = {READ_10_CMD,0x00,(start_sector >> 24) & 0xFF,(start_sector >> 16) & 0xFF,(start_sector >> 8) & 0xFF,start_sector & 0xFF,0x00,(num_blocks >> 8) & 0xFF,num_blocks & 0xFF,0x00};memset(read_buffer, 0, sizeof(read_buffer));fseek(scsi_device, 0, SEEK_SET);  // 將文件指針移到開始位置// 發(fā)送SCSI命令fwrite(read_cmd, 1, sizeof(read_cmd), scsi_device);fflush(scsi_device);// 讀取數(shù)據(jù)fread(read_buffer, block_size, num_blocks, scsi_device);// 可以在這里對(duì)讀取到的數(shù)據(jù)進(jìn)行處理或保存// 打印讀取到的內(nèi)容（僅用于示例）printf("Read Data:\n");for (int i = 0; i < num_blocks * block_size; i++){printf("%02X ", read_buffer[i]);if ((i + 1) % block_size == 0)printf("\n");}
}int main()
{// 打開SCSI設(shè)備文件（假設(shè)為/dev/sdc）FILE* scsi_device = fopen("/dev/sdc", "rb");if (scsi_device == NULL){printf("Failed to open SCSI device.\n");return 1;}unsigned long long start_sector = 0;   // 起始扇區(qū)unsigned int block_size = 512;         // 塊大小（字節(jié)）unsigned int num_blocks = 10;          // 讀取的塊數(shù)// 調(diào)用SCSI讀取函數(shù)scsi_read(scsi_device, start_sector, block_size, num_blocks);// 關(guān)閉SCSI設(shè)備文件fclose(scsi_device);return 0;
}

注意：上述代碼僅為演示目的，請(qǐng)謹(jǐn)慎操作并確保對(duì)SCSI設(shè)備的訪問有合法的權(quán)限。在實(shí)際使用時(shí)，請(qǐng)根據(jù)您的需求和環(huán)境進(jìn)行相應(yīng)的修改和錯(cuò)誤處理。