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Added a FAT directory listing test in the temporary driver

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Morten Delenk 2016-07-26 20:49:16 +02:00
parent ceb7d0d743
commit e974af0fad
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GPG key ID: 3F818D0F65DCB490
2 changed files with 25 additions and 2 deletions
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27
kernel/kernel/disk/fat.cpp
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@ -50,6 +50,20 @@ struct BPB {
uint32_t totalSectors_b;
EBPB ebpb;
}__attribute__((packed));
struct dirent {
uint8_t filename[11];
uint8_t flags;
uint8_t reserved;
uint8_t creationTenth;
uint16_t creationTime;
uint16_t creationDate;
uint16_t accessDate;
uint16_t hiClusterNUM;
uint16_t modifyTime;
uint16_t modifyDate;
uint16_t clusterNUM;
uint32_t fileSize;
}__attribute__((packed));
void readFAT() {
BPB bpb;
MBR::MBR part(disk.getDriveNumByName("ATA0m"));
@ -58,7 +72,7 @@ void readFAT() {
out << "Sectors per Cluster: " << (int) bpb.sectorsPerCluster << "\n";
out << "Reserved Sectors: " << (int) bpb.reservedSectors << "\n";
out << "Number of FATs: " << (int) bpb.numberFAT << "\n";
out << "Number of root directory entries: " << (int) bpb.reservedSectors << "\n";
out << "Number of root directory entries: " << (int) bpb.numDirent << "\n";
uint32_t totalSectors=(bpb.totalSectors_s)?bpb.totalSectors_s:bpb.totalSectors_b;
out << "Total sectors: " << (int) totalSectors << "\n";
uint32_t sectorsPerFAT = (bpb.sectorsPerFAT)?bpb.sectorsPerFAT:bpb.ebpb.fat32.sectorsPerFAT;
@ -86,5 +100,14 @@ void readFAT() {
if(fatVer>28) {
out << "Not implemented\n";
return;
}
}
out << "Reading root directory\n";
dirent *buf=(dirent*)new uint8_t[(sizeRootDir*512)];
disk.readSector(disk.getDriveNumByName("ATA0m"),part.getPartBeg(0)+firstDataSector-sizeRootDir, sizeRootDir, (uint8_t*)buf);
for(int i=0;i<bpb.numDirent;i++) {
buf[i].flags=0;
if(buf[i].fileSize==0)
continue;
out << (char*)buf[i].filename << "@"<<(int)buf[i].clusterNUM << " - Size: " << (int)buf[i].fileSize << ".\n";
}
}

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test.elf
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