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🆕 在fat32文件系统中按照路径寻找文件

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fslongjin
2022-04-20 19:55:36 +08:00
parent db8b4a4877
commit 9b382dab60
10 changed files with 590 additions and 53 deletions
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20
kernel/filesystem/MBR.c Normal file
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#include "MBR.h"
#include <common/kprint.h>
#include <driver/disk/ahci/ahci.h>
struct MBR_disk_partition_table_t MBR_partition_tables[MBR_MAX_AHCI_CTRL_NUM][MBR_MAX_AHCI_PORT_NUM] = {0};
/**
* @brief 读取磁盘的分区表
*
* @param ahci_ctrl_num ahci控制器编号
* @param ahci_port_num ahci端口编号
*/
struct MBR_disk_partition_table_t *MBR_read_partition_table(uint8_t ahci_ctrl_num, uint8_t ahci_port_num)
{
unsigned char buf[512];
memset(buf, 0, 512);
ahci_operation.transfer(ATA_CMD_READ_DMA_EXT, 0, 1, (uint64_t)&buf, ahci_ctrl_num, ahci_port_num);
MBR_partition_tables[ahci_ctrl_num][ahci_port_num] = *(struct MBR_disk_partition_table_t *)buf;
return &MBR_partition_tables[ahci_ctrl_num][ahci_port_num];
}