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文件系统重构

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This commit is contained in:
xiaoyi1212 2024-05-12 14:34:03 +08:00
parent 8a2a8685e4
commit 7e471c20ba
27 changed files with 2973 additions and 456 deletions
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0
boot/asmfunc.asm Normal file
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12
build.py
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@ -80,6 +80,15 @@ def build_network(): # 构建网络系统
return -1
return 0
def build_fs(): # 构建文件系统
print("Building fs source code...")
for file in os.listdir(cd + '\\fs'):
cmd = cd + gcc + " " + "fs\\" + file + " -o " + "target\\" + file.split(".")[0] + ".o"
e = os.system(cmd)
if e != 0:
return -1
return 0
def linker(): # 交叉编译链接
print("Linking object files...")
source_file = ""
@ -106,6 +115,9 @@ a = build_sysapp()
if a != 0:
exit(-1)
a = build_network()
if a != 0:
exit(-1)
a = build_fs()
if a != 0:
exit(-1)
a = linker()

16
driver/cmos.c
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@ -62,35 +62,35 @@ uint8_t read_cmos(uint8_t p) {
return data;
}
static uint32_t get_hour() {
uint32_t get_hour() {
return bcd2hex(read_cmos(CMOS_CUR_HOUR));
}
;static uint32_t get_min() {
uint32_t get_min() {
return bcd2hex(read_cmos(CMOS_CUR_MIN));
}
static uint32_t get_sec() {
uint32_t get_sec() {
return bcd2hex(read_cmos(CMOS_CUR_SEC));
}
static uint32_t get_day_of_month() {
uint32_t get_day_of_month() {
return bcd2hex(read_cmos(CMOS_MON_DAY));
}
static uint32_t get_day_of_week() {
uint32_t get_day_of_week() {
return bcd2hex(read_cmos(CMOS_WEEK_DAY));
}
static uint32_t get_mon() {
uint32_t get_mon() {
return bcd2hex(read_cmos(CMOS_CUR_MON));
}
static uint32_t get_year() {
uint32_t get_year() {
return (bcd2hex(read_cmos(CMOS_CUR_CEN)) * 100) + bcd2hex(read_cmos(CMOS_CUR_YEAR)) + 1980;
}
static int is_leap_year(int year) {
int is_leap_year(int year) {
if (year % 4 != 0) return 0;
if (year % 400 == 0) return 1;
return year % 100 != 0;

62
driver/dma.c Normal file
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@ -0,0 +1,62 @@
#include "../include/dma.h"
#include "../include/io.h"
unsigned char MaskReg[8] = {0x0A, 0x0A, 0x0A, 0x0A, 0xD4, 0xD4, 0xD4, 0xD4};
unsigned char ModeReg[8] = {0x0B, 0x0B, 0x0B, 0x0B, 0xD6, 0xD6, 0xD6, 0xD6};
unsigned char ClearReg[8] = {0x0C, 0x0C, 0x0C, 0x0C, 0xD8, 0xD8, 0xD8, 0xD8};
unsigned char PagePort[8] = {0x87, 0x83, 0x81, 0x82, 0x8F, 0x8B, 0x89, 0x8A};
unsigned char AddrPort[8] = {0x00, 0x02, 0x04, 0x06, 0xC0, 0xC4, 0xC8, 0xCC};
unsigned char CountPort[8] = {0x01, 0x03, 0x05, 0x07, 0xC2, 0xC6, 0xCA, 0xCE};
void dma_xfer(unsigned char channel, unsigned long address, unsigned int length,
unsigned char read) {
unsigned char page = 0, mode = 0;
unsigned int offset = 0;
if (read)
mode = 0x48 + channel;
else
mode = 0x44 + channel;
page = address >> 16;
offset = address & 0xFFFF;
length--;
_dma_xfer(channel, page, offset, length, mode);
}
void _dma_xfer(unsigned char DMA_channel, unsigned char page,
unsigned int offset, unsigned int length, unsigned char mode) {
/* 我们不想别的事情来打扰 */
asm("cli");
/* 设置DMA通道，以便我们可以正确传输数据，这很简单，只要我们用I/O操作告诉DMA控制器就行了
*/
/* 我们将使用这个通道（DMA_channel）*/
io_out8(MaskReg[DMA_channel], 0x04 | DMA_channel);
/* 我们先得解除DMA对这个通道的屏蔽，不然用不了 */
io_out8(ClearReg[DMA_channel], 0x00);
/* 向DMA发送指定的模式 */
io_out8(ModeReg[DMA_channel], mode);
/* 发送偏移量地址，先发送高八位，再发送低八位（因为一次性最多只能发送一个byte）
*/
io_out8(AddrPort[DMA_channel], LOW_BYTE(offset));
io_out8(AddrPort[DMA_channel], HI_BYTE(offset));
/* 发送数据所在的物理页 */
io_out8(PagePort[DMA_channel], page);
/* 发送数据的长度 跟之前一样，先发送低八位，再发送高八位*/
io_out8(CountPort[DMA_channel], LOW_BYTE(length));
io_out8(CountPort[DMA_channel], HI_BYTE(length));
/* 现在我们该做的东西已经全部做完了，所以启用DMA_channel */
io_out8(MaskReg[DMA_channel], DMA_channel);
/* 重新让CPU能够接收到中断 */
asm("sti");
}

399
driver/floppy.c Normal file
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@ -0,0 +1,399 @@
#include "../include/floppy.h"
#include "../include/task.h"
#include "../include/printf.h"
#include "../include/vdisk.h"
#include "../include/io.h"
#include "../include/dma.h"
struct task_struct *floppy_use;
struct task_struct *waiter;
volatile int floppy_int_count = 0;
static volatile int done = 0;
static int dchange = 0;
static int motor = 0;
static int mtick = 0;
static volatile int tmout = 0;
static unsigned char status[7] = {0};
static unsigned char statsz = 0;
static unsigned char sr0 = 0;
static unsigned char fdc_track = 0xff;
static DrvGeom geometry = {DG144_HEADS, DG144_TRACKS, DG144_SPT};
unsigned long tbaddr = 0x80000L;
static void Read(char drive, unsigned char *buffer, unsigned int number,
unsigned int lba) {
floppy_use = get_current();
for (int i = 0; i < number; i += SECTORS_ONCE) {
int sectors = ((number - i) >= SECTORS_ONCE) ? SECTORS_ONCE : (number - i);
fdc_rw(lba + i, buffer + i * 512, 1, sectors);
}
floppy_use = NULL;
}
static void Write(char drive, unsigned char *buffer, unsigned int number,
unsigned int lba) {
floppy_use = get_current();
for (int i = 0; i < number; i += SECTORS_ONCE) {
int sectors = ((number - i) >= SECTORS_ONCE) ? SECTORS_ONCE : (number - i);
fdc_rw(lba + i, buffer + i * 512, 0, sectors);
}
floppy_use = NULL;
}
void init_floppy() {
sendbyte(CMD_VERSION); //发送命令（获取软盘版本），如果收到回应，说明软盘正在工作
if (getbyte() == -1) {
printf("floppy: no floppy drive found\n");
printf("No fount FDC\n");
return;
}
register_interrupt_handler(0x26,flint);
printf("[\035floppy\036]: FLOPPY DISK:RESETING\n");
reset(); //重置软盘驱动器
printf("[\035floppy\036]:FLOPPY DISK:reset over!\n");
sendbyte(CMD_VERSION); //获取软盘版本
printf("[\035floppy\036]:FDC_VER:0x%x\n", getbyte()); //并且输出到屏幕上
vdisk vd;
strcpy(vd.DriveName, "floppy");
vd.Read = Read;
vd.Write = Write;
vd.size = 1474560;
vd.flag = 1;
register_vdisk(vd);
}
int fdc_rw_ths(int track,
int head,
int sector,
unsigned char* blockbuff,
int read,
unsigned long nosectors) {
// 跟上面的大同小异
int tries, copycount = 0;
unsigned char* p_tbaddr = (char*)0x80000;
unsigned char* p_blockbuff = blockbuff;
motoron();
if (!read && blockbuff) {
for (copycount = 0; copycount < (nosectors * 512); copycount++) {
*p_tbaddr = *p_blockbuff;
p_blockbuff++;
p_tbaddr++;
}
}
for (tries = 0; tries < 3; tries++) {
if (io_in8(FDC_DIR) & 0x80) {
dchange = 1;
seek(1);
recalibrate();
motoroff();
return fdc_rw_ths(track, head, sector, blockbuff, read, nosectors);
}
if (!seek(track)) {
motoroff();
return 0;
}
io_out8(FDC_CCR, 0);
if (read) {
dma_xfer(2, tbaddr, nosectors * 512, 0);
sendbyte(CMD_READ);
} else {
dma_xfer(2, tbaddr, nosectors * 512, 1);
sendbyte(CMD_WRITE);
}
sendbyte(head << 2);
sendbyte(track);
sendbyte(head);
sendbyte(sector);
sendbyte(2);
sendbyte(geometry.spt);
if (geometry.spt == DG144_SPT)
sendbyte(DG144_GAP3RW);
else
sendbyte(DG168_GAP3RW);
sendbyte(0xff);
wait_floppy_interrupt();
if ((status[0] & 0xc0) == 0)
break;
recalibrate();
}
motoroff();
if (read && blockbuff) {
p_blockbuff = blockbuff;
p_tbaddr = (char*)0x80000;
for (copycount = 0; copycount < (nosectors * 512); copycount++) {
*p_blockbuff = *p_tbaddr;
p_blockbuff++;
p_tbaddr++;
}
}
return (tries != 3);
}
int write_floppy_for_ths(int track,
int head,
int sec,
unsigned char* blockbuff,
unsigned long nosec) {
int res = fdc_rw_ths(track, head, sec, blockbuff, 0, nosec);
}
void flint(registers_t *reg) {
floppy_int_count =
1; // 设置中断计数器为1，代表中断已经发生（或者是系统已经收到了中断）
io_out8(0x20, 0x20); // 发送EOI信号，告诉PIC，我们已经处理完了这个中断
//task_run(waiter);
// task_next();
}
void sendbyte(int byte) {
volatile int msr;
int tmo; // 超时计数器
for (tmo = 0; tmo < 128; tmo++) // 这里我们只给128次尝试的机会
{
msr = io_in8(FDC_MSR);
if ((msr & 0xc0) ==
0x80) {
io_out8(FDC_DATA, byte);
return;
}
io_in8(0x80); /* 等待 */
}
}
int getbyte() {
int msr; // 软盘驱动器状态寄存器
int tmo; // 软盘驱动器状态寄存器的超时计数器
for (tmo = 0; tmo < 128; tmo++){
msr = io_in8(FDC_MSR);
if ((msr & 0xd0) == 0xd0){
return io_in8(FDC_DATA);
}
io_in8(0x80); /* 延时 */
}
return -1; /* 没读取到 */
}
void set_waiter(struct task_struct *t) {
while(waiter); // wait
waiter = t;
}
void reset(void) {
set_waiter(get_current());
io_out8(FDC_DOR, 0);
mtick = 0;
motor = 0;
io_out8(FDC_DRS, 0);
io_out8(FDC_DOR, 0x0c);
wait_floppy_interrupt();
sendbyte(CMD_SPECIFY);
sendbyte(0xdf); /* SRT = 3ms, HUT = 240ms */
sendbyte(0x02); /* HLT = 16ms, ND = 0 */
recalibrate();
dchange =
0; //清除“磁盘更改”状态（将dchange设置为false，让别的函数知道磁盘更改状态已经被清楚了）
}
void motoron(void) {
if (!motor) {
mtick = -1; /* 停止电机计时 */
io_out8(FDC_DOR, 0x1c);
for (int i = 0; i < 80000; i++)
;
motor = 1; //设置电机状态为true
}
}
/* 关闭电机 */
void motoroff(void) {
if (motor) {
mtick = 13500; /* 重新初始化电机计时器 */
}
}
/* 重新校准驱动器 */
void recalibrate() {
set_waiter(get_current());
/* 先启用电机 */
motoron();
/* 然后重新校准电机 */
sendbyte(CMD_RECAL);
sendbyte(0);
/* 等待软盘中断（也就是电机校准成功） */
wait_floppy_interrupt();
/* 关闭电机 */
motoroff();
}
void wait_floppy_interrupt() {
io_sti();
while(!floppy_int_count);
statsz = 0; // 清空状态
while ((statsz < 7) &&(io_in8(FDC_MSR) &(1<< 4))) {
status[statsz++] = getbyte(); // 获取数据
}
/* 获取中断状态 */
sendbyte(CMD_SENSEI);
sr0 = getbyte();
fdc_track = getbyte();
floppy_int_count = 0;
floppy_use = NULL;
return;
}
int seek(int track) {
if (fdc_track == track) /* 目前的磁道和需要seek的磁道一样吗 */
{
// 一样的话就不用seek了
return 1;
}
set_waiter(get_current());
/* 向软盘控制器发送SEEK命令 */
sendbyte(CMD_SEEK);
sendbyte(0);
sendbyte(track); /* 要seek到的磁道号 */
/* 发送完之后，软盘理应会送来一个中断 */
wait_floppy_interrupt(); // 所以我们需要等待软盘中断
for (int i = 0; i < 500; i++)
;
/* 检查一下成功了没有 */
if ((sr0 != 0x20) || (fdc_track != track))
return 0; // 没成功
else
return 1; // 成功了
}
void block2hts(int block, int* track, int* head, int* sector) {
*track = (block / 18) / 2;
*head = (block / 18) % 2;
*sector = block % 18 + 1;
}
void hts2block(int track, int head, int sector, int* block) {
*block = track * 18 * 2 + head * 18 + sector;
}
int fdc_rw(int block,
unsigned char* blockbuff,
int read,
unsigned long nosectors) {
set_waiter(get_current());
int head, track, sector, tries, copycount = 0;
unsigned char* p_tbaddr =
(char*)0x80000; // 512byte
// 缓冲区（大家可以放心，我们再page.c已经把这里设置为占用了）
unsigned char* p_blockbuff = blockbuff; // r/w的数据缓冲区
/* 获取block对应的ths */
block2hts(block, &track, &head, &sector);
motoron();
if (!read && blockbuff) {
/* 从数据缓冲区复制数据到轨道缓冲区 */
for (copycount = 0; copycount < (nosectors * 512); copycount++) {
*p_tbaddr = *p_blockbuff;
p_blockbuff++;
p_tbaddr++;
}
}
for (tries = 0; tries < 3; tries++) {
/* 检查 */
if (io_in8(FDC_DIR) & 0x80) {
waiter = NULL;
dchange = 1;
seek(1); /* 清除磁盘更改 */
recalibrate();
motoroff();
return fdc_rw(block, blockbuff, read, nosectors);
}
waiter = NULL;
/* seek到track的位置*/
if (!seek(track)) {
motoroff();
waiter = NULL;
return 0;
}
set_waiter(get_current());
/* 传输速度（500K/s） */
io_out8(FDC_CCR, 0);
/* 发送命令 */
if (read) {
dma_xfer(2, tbaddr, nosectors * 512, 0);
sendbyte(CMD_READ);
} else {
dma_xfer(2, tbaddr, nosectors * 512, 1);
sendbyte(CMD_WRITE);
}
sendbyte(head << 2);
sendbyte(track);
sendbyte(head);
sendbyte(sector);
sendbyte(2); /* 每个扇区是512字节 */
sendbyte(geometry.spt);
if (geometry.spt == DG144_SPT)
sendbyte(DG144_GAP3RW);
else
sendbyte(DG168_GAP3RW);
sendbyte(0xff);
/* 等待中断...... */
/* 读写数据不需要中断状态 */
wait_floppy_interrupt();
if ((status[0] & 0xc0) == 0)
break; /* worked! outta here! */
waiter = NULL;
recalibrate(); /* az，报错了，再试一遍 */
}
/* 关闭电动机 */
motoroff();
if (read && blockbuff) {
/* 复制数据 */
p_blockbuff = blockbuff;
p_tbaddr = (char*)0x80000;
for (copycount = 0; copycount < (nosectors * 512); copycount++) {
*p_blockbuff = *p_tbaddr;
p_blockbuff++;
p_tbaddr++;
}
}
return (tries != 3);
}

1397
fs/fat.c Normal file
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File diff suppressed because it is too large Load Diff

0
kernel/fat16.c → fs/fat16.c
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236
fs/file.c Normal file
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@ -0,0 +1,236 @@
#include "../include/file.h"
#include "../include/memory.h"
#include "../include/common.h"
int fseek(FILE *fp, int offset, int whence) {
if (whence == 0) {
fp->p = offset;
} else if (whence == 1) {
fp->p += offset;
} else if (whence == 2) {
fp->p = fp->fileSize + offset;
} else {
return -1;
}
return 0;
}
long ftell(FILE *stream) { return stream->p; }
FILE *fopen(char *filename, char *mode) {
unsigned int flag = 0;
FILE *fp = (FILE *)kmalloc(sizeof(FILE));
while (*mode != '\0') {
switch (*mode) {
case 'a':
flag |= APPEND;
break;
case 'b':
break;
case 'r':
flag |= READ;
break;
case 'w':
flag |= WRITE;
break;
case '+':
flag |= PLUS;
break;
default:
break;
}
mode++;
}
if (vfs_filesize(filename) == -1) {
kfree(fp);
return NULL; // 找不到
} else if (flag & WRITE) {
char buffe2[100];
// vfs_delfile(filename);
// vfs_createfile(filename);
}
if (flag & WRITE) {
fp->fileSize = 0;
} else {
fp->fileSize = vfs_filesize(filename);
}
fp->bufferSize = 0;
if (flag & READ || flag & PLUS || flag & APPEND) {
fp->bufferSize = vfs_filesize(filename);
// printk("[Set]BufferSize=%d\n",fp->bufferSize);
}
if (flag & WRITE || flag & PLUS || flag & APPEND) {
fp->bufferSize += 100;
}
if (fp->bufferSize == 0) {
fp->bufferSize = 1;
}
fp->buffer = kmalloc(fp->bufferSize);
if (flag & PLUS || flag & APPEND || flag & READ) {
// printk("ReadFile........\n");
vfs_readfile(filename, fp->buffer);
}
fp->p = 0;
if (flag & APPEND) {
fp->p = fp->fileSize;
}
fp->name = kmalloc(strlen(filename) + 1);
strcpy(fp->name, filename);
fp->mode = flag;
// printk("[fopen]BufferSize=%d\n",fp->bufferSize);
return fp;
}
int fgetc(FILE *stream) {
if (CANREAD(stream->mode)) {
if (stream->p >= stream->fileSize) {
return EOF;
} else {
return stream->buffer[stream->p++];
}
} else {
return EOF;
}
}
int fputc(int ch, FILE *stream) {
if (CANWRITE(stream->mode)) {
// printk("Current Buffer=%s\n",stream->buffer);
if (stream->p >= stream->bufferSize) {
// printk("Realloc....(%d,%d)\n",stream->p,stream->bufferSize);
stream->buffer = realloc(stream->buffer, stream->bufferSize + 100);
stream->bufferSize += 100;
}
if (stream->p >= stream->fileSize) {
stream->fileSize++;
}
// printk("Current Buffer=%s(A)\n",stream->buffer);
stream->buffer[stream->p++] = ch;
// printk("Current Buffer=%s(B)\n",stream->buffer);
return ch;
}
return EOF;
}
unsigned int fwrite(const void *ptr, unsigned int size, unsigned int nmemb,
FILE *stream) {
if (CANWRITE(stream->mode)) {
unsigned char *c_ptr = (unsigned char *)ptr;
for (int i = 0; i < size * nmemb; i++) {
fputc(c_ptr[i], stream);
}
return nmemb;
} else {
return 0;
}
}
unsigned int fread(void *buffer, unsigned int size, unsigned int count,
FILE *stream) {
if (CANREAD(stream->mode)) {
unsigned char *c_ptr = (unsigned char *)buffer;
for (int i = 0; i < size * count; i++) {
unsigned int ch = fgetc(stream);
if (ch == EOF) {
return i;
} else {
c_ptr[i] = ch;
}
}
return count;
} else {
return 0;
}
}
int fclose(FILE *fp) {
if (fp == NULL) {
return EOF;
}
if (CANWRITE(fp->mode)) {
// printk("Save file.....(%s) Size =
//%d\n",fp->buffer,fp->fileSize);
// Edit_File(fp->name, fp->buffer, fp->fileSize, 0);
vfs_writefile(fp->name, fp->buffer, fp->fileSize);
}
kfree(fp->buffer);
kfree(fp->name);
kfree(fp);
return 0;
}
char *fgets(char *str, int n, FILE *stream) {
if (CANREAD(stream->mode)) {
for (int i = 0; i < n; i++) {
unsigned int ch = fgetc(stream);
if (ch == EOF) {
if (i == 0) {
return NULL;
} else {
break;
}
}
if (ch == '\n') {
break;
}
str[i] = ch;
}
return str;
}
return NULL;
}
int fputs(const char *str, FILE *stream) {
if (CANWRITE(stream->mode)) {
for (int i = 0; i < strlen(str); i++) {
fputc(str[i], stream);
}
return 0;
}
return EOF;
}
int fprintf(FILE *stream, const char *format, ...) {
if (CANWRITE(stream->mode)) {
int len;
va_list ap;
va_start(ap, format);
char *buf = kmalloc(1024);
len = vsprintf(buf, format, ap);
fputs(buf, stream);
kfree(buf);
va_end(ap);
return len;
} else {
// printk("CAN NOT WRITE\n");
return EOF;
}
}
int feof(FILE *stream) {
if (stream->p >= stream->fileSize) {
return EOF;
}
return 0;
}
int ferror(FILE *stream) { return 0; }
int fsz(char *filename) { return vfs_filesize(filename); }
void EDIT_FILE(char *name, char *dest, int length, int offset) {
if (vfs_filesize(name) == -1) {
//没有找到文件，创建一个，然后再编辑
vfs_createfile(name);
EDIT_FILE(name, dest, length, offset);
return;
}
vfs_writefile(name, dest, length);
return;
}
int Copy(char *path, char *path1) {
unsigned char *path1_file_buffer;
if (fsz(path) == -1) {
// printk("file not found\n");
return -1;
}
// printk("-----------------------------\n");
vfs_createfile(path1);
path1_file_buffer = kmalloc(fsz(path) + 1);
int sz = fsz(path);
vfs_readfile(path, path1_file_buffer);
vfs_writefile(path1, path1_file_buffer, sz);
kfree(path1_file_buffer);
return 0;
}

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fs/vfs.c Normal file
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/*
* PlantsOS FileSystem Abstract Interface
* Copyright by min0911
*/
#include "../include/printf.h"
#include "../include/vfs.h"
#include "../include/common.h"
#include "../include/memory.h"
vfs_t vfsstl[26];
vfs_t vfsMount_Stl[26];
vfs_t *vfs_now;
static vfs_t *drive2fs(uint8_t drive) {
for (int i = 0; i < 26; i++) {
if (vfsMount_Stl[i].drive == toupper(drive) && vfsMount_Stl[i].flag == 1) {
return &vfsMount_Stl[i];
}
}
return NULL;
}
static vfs_t *ParsePath(char *result) {
vfs_t *vfs_result = vfs_now;
if (result[1] == ':') {
if (!(vfs_result = drive2fs(result[0]))) {
printf("Mount Drive is not found!\n");
printf("Parse Error.\n");
return NULL;
}
if (result) {
delete_char(result, 0);
delete_char(result, 0);
}
}
if (result) {
for (int i = 0; i < strlen(result); i++) {
if (result[i] == '\\') {
result[i] = '/';
}
}
}
return vfs_result;
}
static vfs_t *findSeat(vfs_t *vstl) {
for (int i = 0; i < 26; i++) {
if (vstl[i].flag == 0) {
return &vstl[i];
}
}
return NULL;
}
static vfs_t *check_disk_fs(uint8_t disk_number) {
for (int i = 0; i < 26; i++) {
if (vfsstl[i].flag == 1) {
if (vfsstl[i].Check(disk_number)) {
return &vfsstl[i];
}
}
}
return NULL;
}
static void insert_str1(char *str, char *insert_str1, int pos) {
for (int i = 0; i < strlen(insert_str1); i++) {
insert_char(str, pos + i, insert_str1[i]);
}
}
bool vfs_mount_disk(uint8_t disk_number, uint8_t drive) {
printf("Mount DISK ---- %02x\n", disk_number);
for (int i = 0; i < 26; i++) {
if (vfsMount_Stl[i].flag == 1 &&
(vfsMount_Stl[i].drive == drive ||
vfsMount_Stl[i].disk_number == disk_number)) {
return false;
}
}
vfs_t *seat = findSeat(vfsMount_Stl);
if (!seat) {
printf("can not find a seat of vfsMount_Stl(it's full)\n");
return false;
}
vfs_t *fs = check_disk_fs(disk_number);
if (!fs) {
printf("unknow file system.\n");
return false;
}
*seat = *fs;
seat->InitFs(seat, disk_number);
seat->drive = drive;
seat->disk_number = disk_number;
seat->flag = 1;
return true;
}
bool vfs_unmount_disk(uint8_t drive) {
printf("Unmount disk ---- %c\n", drive);
for (int i = 0; i < 26; i++) {
if (vfsMount_Stl[i].drive == drive && vfsMount_Stl[i].flag == 1) {
vfsMount_Stl[i].DeleteFs(&vfsMount_Stl[i]);
vfsMount_Stl[i].flag = 0;
return true;
}
}
printf("Not found the drive.\n");
return false;
}
bool vfs_readfile(char *path, char *buffer) {
char *new_path = kmalloc(strlen(path) + 1);
strcpy(new_path, path);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
int result = vfs->ReadFile(vfs, new_path, buffer);
kfree(new_path);
return result;
}
bool vfs_writefile(char *path, char *buffer, int size) {
char *new_path = kmalloc(strlen(path) + 1);
strcpy(new_path, path);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
int result = vfs->WriteFile(vfs, new_path, buffer, size);
kfree(new_path);
return result;
}
uint32_t vfs_filesize(char *filename) {
char *new_path = kmalloc(strlen(filename) + 1);
strcpy(new_path, filename);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return -1;
}
int result = vfs->FileSize(vfs, new_path); // 没找到文件统一返回-1
kfree(new_path);
return result;
}
List *vfs_listfile(char *dictpath) { // dictpath == "" 则表示当前路径
if (strcmp(dictpath, "") == 0) {
return vfs_now->ListFile(vfs_now, dictpath);
} else {
char *new_path = kmalloc(strlen(dictpath) + 1);
strcpy(new_path, dictpath);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return NULL;
}
List *result = vfs->ListFile(vfs, new_path);
kfree(new_path);
return result;
}
}
bool vfs_delfile(char *filename) {
char *new_path = kmalloc(strlen(filename) + 1);
strcpy(new_path, filename);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
int result = vfs->DelFile(vfs, new_path);
kfree(new_path);
return result;
}
bool vfs_deldir(char *dictname) {
char *new_path = kmalloc(strlen(dictname) + 1);
strcpy(new_path, dictname);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
int result = vfs->DelDict(vfs, new_path);
kfree(new_path);
return result;
}
bool vfs_createfile(char *filename) {
char *new_path = kmalloc(strlen(filename) + 1);
strcpy(new_path, filename);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
int result = vfs->CreateFile(vfs, new_path);
kfree(new_path);
return result;
}
bool vfs_createdict(char *filename) {
char *new_path = kmalloc(strlen(filename) + 1);
strcpy(new_path, filename);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
int result = vfs->CreateDict(vfs, new_path);
kfree(new_path);
return result;
}
bool vfs_renamefile(char *filename, char *filename_of_new) {
char *new_path = kmalloc(strlen(filename) + 1);
strcpy(new_path, filename);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
int result = vfs->RenameFile(vfs, new_path, filename_of_new);
kfree(new_path);
return result;
}
bool vfs_attrib(char *filename, ftype type) {
char *new_path = kmalloc(strlen(filename) + 1);
strcpy(new_path, filename);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
int result = vfs->Attrib(vfs, new_path, type);
kfree(new_path);
return result;
}
bool vfs_format(uint8_t disk_number, char *FSName) {
for (int i = 0; i < 255; i++) {
if (strcmp(vfsstl[i].FSName, FSName) == 0 && vfsstl[i].flag == 1) {
return vfsstl[i].Format(disk_number);
}
}
return false;
}
vfs_file *vfs_fileinfo(char *filename) {
char *new_path = kmalloc(strlen(filename) + 1);
strcpy(new_path, filename);
vfs_t *vfs = ParsePath(new_path);
if (vfs == NULL) {
kfree(new_path);
return false;
}
vfs_file *result = vfs->FileInfo(vfs, new_path);
kfree(new_path);
return result;
}
bool vfs_change_disk(uint8_t drive) {
if (vfs_now != NULL) {
while (FindForCount(1, vfs_now->path) != NULL) {
kfree(FindForCount(vfs_now->path->ctl->all, vfs_now->path)->val);
DeleteVal(vfs_now->path->ctl->all, vfs_now->path);
}
kfree(vfs_now->cache);
DeleteList(vfs_now->path);
kfree(vfs_now);
}
vfs_t *f;
if (!(f = drive2fs(drive))) {
return false; // 没有mount
}
vfs_now = kmalloc(sizeof(vfs_t));
memcpy(vfs_now, f, sizeof(vfs_t));
f->CopyCache(vfs_now, f);
vfs_now->path = NewList();
vfs_now->cd(vfs_now, "/");
return true;
}
void init_vfs() {
for (int i = 0; i < 26; i++) {
vfsstl[i].flag = 0;
vfsstl[i].disk_number = 0;
vfsstl[i].drive = 0;
vfsMount_Stl[i].flag = 0;
vfsMount_Stl[i].disk_number = 0;
vfsMount_Stl[i].drive = 0;
// PDEBUG("Set vfsstl[%d] & vfsMount_Stl[%d] OK.", i, i);
}
vfs_now = NULL;
}
bool vfs_register_fs(vfs_t vfs) {
printf("Register file system: %s\n", vfs.FSName);
vfs_t *seat;
seat = findSeat(vfsstl);
if (!seat) {
printf("can not find a seat of vfsstl(it's full)\n");
return false;
}
*seat = vfs;
return true;
}

9
include/cmos.h
View File

@ -30,4 +30,13 @@ uint8_t read_cmos(uint8_t p);
char *get_date_time();
void print_cpu_id();
uint32_t get_hour();
uint32_t get_min();
uint32_t get_sec();
uint32_t get_day_of_month();
uint32_t get_day_of_week();
uint32_t get_mon();
uint32_t get_year();
int is_leap_year(int year);
#endif //CRASHPOWEROS_CMOS_H

12
include/common.h
View File

@ -7,6 +7,9 @@
#define LONG_MAX 9223372036854775807L
#define LONG_MIN -9223372036854775808L
#define UINT32_MAX 0xffffffff
#define INT32_MAX 0x7fffffff
#define swap32(x) \
((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24))
@ -17,7 +20,16 @@
#include <stdarg.h>
typedef int bool;
#define true 1
#define false 0
#define EOF -1
unsigned int rand(void);
void srand(unsigned long seed);
void insert_char(char* str, int pos, char ch);
void delete_char(char* str, int pos);
void strtoupper(char* str);
int strncmp(const char* s1, const char* s2, size_t n);
void assert(int b,char* message);
size_t strlen(const char* str);
int strcmp(const char *s1, const char *s2);

12
include/dma.h Normal file
View File

@ -0,0 +1,12 @@
#ifndef CRASHPOWEROS_DMA_H
#define CRASHPOWEROS_DMA_H
#define LOW_BYTE(x) (x & 0x00FF)
#define HI_BYTE(x) ((x & 0xFF00) >> 8)
void _dma_xfer(unsigned char DMA_channel, unsigned char page,
unsigned int offset, unsigned int length, unsigned char mode);
void dma_xfer(unsigned char channel, unsigned long address, unsigned int length,
unsigned char read);
#endif

122
include/fat.h
View File

@ -1,7 +1,47 @@
#ifndef CRASHPOWEROS_FAT_H
#define CRASHPOWEROS_FAT_H
#define BS_jmpBoot 0
#define BS_OEMName 3
#define BPB_BytsPerSec 11
#define BPB_SecPerClus 13
#define BPB_RsvdSecCnt 14
#define BPB_NumFATs 16
#define BPB_RootEntCnt 17
#define BPB_TotSec16 19
#define BPB_Media 21
#define BPB_FATSz16 22
#define BPB_SecPerTrk 24
#define BPB_NumHeads 26
#define BPB_HiddSec 28
#define BPB_TotSec32 32
#define BPB_FATSz32 36
#define BPB_ExtFlags 40
#define BPB_FSVer 42
#define BPB_RootClus 44
#define BPB_FSInfo 48
#define BPB_BkBootSec 50
#define BPB_Reserved 52
#define BPB_Fat32ExtByts 28
#define BS_DrvNum 36
#define BS_Reserved1 37
#define BS_BootSig 38
#define BS_VolD 39
#define BS_VolLab 43
#define BS_FileSysType 54
#define EOF -1
#define SEEK_SET 0
#define SEEK_CUR 1
#define SEEK_END 2
#define get_dm(vfs) ((fat_cache *)(vfs->cache))->dm
#define get_now_dir(vfs) ((fat_cache *)(vfs->cache))->dir
#define get_clustno(high, low) (high << 16) | (low & 0xffff)
#define clustno_end(type) 0xfffffff & ((((1 << (type - 1)) - 1) << 1) + 1)
#define rmfarptr2ptr(x) ((x).seg * 0x10 + (x).offset)
#include "../include/common.h"
#include "vfs.h"
struct FAT_CACHE {
unsigned int ADR_DISKIMG;
@ -21,16 +61,12 @@ struct FAT_CACHE {
unsigned char *FatClustnoFlags;
int type;
};
typedef struct {
struct FAT_CACHE dm;
struct FAT_FILEINFO *dir;
} fat_cache;
#define get_dm(vfs) ((fat_cache *)(vfs->cache))->dm
#define get_now_dir(vfs) ((fat_cache *)(vfs->cache))->dir
#define get_clustno(high, low) (high << 16) | (low & 0xffff)
#define clustno_end(type) 0xfffffff & ((((1 << (type - 1)) - 1) << 1) + 1)
struct FAT_FILEINFO {
unsigned char name[8], ext[3], type;
char reserve;
@ -40,54 +76,40 @@ struct FAT_FILEINFO {
unsigned int size;
};
typedef struct FILE {
unsigned int mode;
unsigned int fileSize;
unsigned char *buffer;
unsigned int bufferSize;
unsigned int p;
char *name;
} FILE;
typedef enum { FLE, DIR, RDO, HID, SYS } ftype;
typedef struct {
char name[255];
ftype type;
unsigned int size;
unsigned short year, month, day;
unsigned short hour, minute;
} vfs_file;
typedef struct vfs_t {
struct List *path;
void *cache;
char FSName[255];
int disk_number;
uint8_t drive; // 大写（必须）
vfs_file *(*FileInfo)(struct vfs_t *vfs, char *filename);
struct List *(*ListFile)(struct vfs_t *vfs, char *dictpath);
bool (*ReadFile)(struct vfs_t *vfs, char *path, char *buffer);
bool (*WriteFile)(struct vfs_t *vfs, char *path, char *buffer, int size);
bool (*DelFile)(struct vfs_t *vfs, char *path);
bool (*DelDict)(struct vfs_t *vfs, char *path);
bool (*CreateFile)(struct vfs_t *vfs, char *filename);
bool (*CreateDict)(struct vfs_t *vfs, char *filename);
bool (*RenameFile)(struct vfs_t *vfs, char *filename, char *filename_of_new);
bool (*Attrib)(struct vfs_t *vfs, char *filename, ftype type);
bool (*Format)(uint8_t disk_number);
void (*InitFs)(struct vfs_t *vfs, uint8_t disk_number);
void (*DeleteFs)(struct vfs_t *vfs);
bool (*Check)(uint8_t disk_number);
bool (*cd)(struct vfs_t *vfs, char *dictName);
int (*FileSize)(struct vfs_t *vfs, char *filename);
void (*CopyCache)(struct vfs_t *dest, struct vfs_t *src);
int flag;
} vfs_t;
/*
void read_fat(unsigned char *img, int *fat, unsigned char *ff, int max,int type);
int get_directory_max(struct FAT_FILEINFO *directory, vfs_t *vfs);
void file_loadfile(int clustno, int size, char *buf, int *fat, vfs_t *vfs);
void file_savefile(int clustno, int size, char *buf, int *fat,
unsigned char *ff, vfs_t *vfs);
void file_saveinfo(struct FAT_FILEINFO *directory, vfs_t *vfs);
void file_savefat(int *fat, int clustno, int length, vfs_t *vfs);
*/
int mkfile(char *name, vfs_t *vfs);
int del(char *cmdline, vfs_t *vfs);
int deldir(char *path, vfs_t *vfs);
int format(char drive);
int attrib(char *filename, ftype type, struct vfs_t *vfs);
void Register_fat_fileSys();
struct FAT_FILEINFO *Get_dictaddr(char *path1, vfs_t *vfs);
void Fat_CopyCache(struct vfs_t *dest, struct vfs_t *src);
bool Fat_cd(struct vfs_t *vfs, char *dictName);
bool Fat_ReadFile(struct vfs_t *vfs, char *path, char *buffer);
bool Fat_WriteFile(struct vfs_t *vfs, char *path, char *buffer, int size);
List *Fat_ListFile(struct vfs_t *vfs, char *dictpath);
bool Fat_RenameFile(struct vfs_t *vfs, char *filename, char *filename_of_new);
bool Fat_CreateFile(struct vfs_t *vfs, char *filename);
bool Fat_DelFile(struct vfs_t *vfs, char *path);
bool Fat_DelDict(struct vfs_t *vfs, char *path);
void Fat_DeleteFs(struct vfs_t *vfs);
bool Fat_Check(uint8_t disk_number);
int Fat_FileSize(struct vfs_t *vfs, char *filename);
bool Fat_Format(uint8_t disk_number);
bool Fat_CreateDict(struct vfs_t *vfs, char *filename);
bool Fat_Attrib(struct vfs_t *vfs, char *filename, ftype type);
vfs_file *Fat_FileInfo(struct vfs_t *vfs, char *filename);
void fat_InitFS(struct vfs_t *vfs, uint8_t disk_number);
int get_directory_max(struct FAT_FILEINFO *directory, vfs_t *vfs);
int mkdir(char *dictname, int last_clust, vfs_t *vfs);
int rename(char *src_name, char *dst_name, vfs_t *vfs);
int changedict(char *dictname, vfs_t *vfs);
#endif

33
include/file.h Normal file
View File

@ -0,0 +1,33 @@
#ifndef CRASHPOWEROS_FILE_H
#define CRASHPOWEROS_FILE_H
#define READ 0x2
#define WRITE 0x4
#define APPEND 0x8
#define BIN 0x0
#define PLUS 0x10
#define CANREAD(flag) ((flag)&READ || (flag)&PLUS)
#define CANWRITE(flag) ((flag)&WRITE || (flag)&PLUS || (flag)&APPEND)
#include "../include/vfs.h"
int fseek(FILE *fp, int offset, int whence);
long ftell(FILE *stream);
FILE *fopen(char *filename, char *mode);
int fgetc(FILE *stream);
int fputc(int ch, FILE *stream);
unsigned int fwrite(const void *ptr, unsigned int size, unsigned int nmemb,
FILE *stream);
unsigned int fread(void *buffer, unsigned int size, unsigned int count,
FILE *stream);
int fclose(FILE *fp);
char *fgets(char *str, int n, FILE *stream);
int fputs(const char *str, FILE *stream);
int fprintf(FILE *stream, const char *format, ...);
int feof(FILE *stream);
int ferror(FILE *stream);
int fsz(char *filename);
void EDIT_FILE(char *name, char *dest, int length, int offset);
int Copy(char *path, char *path1);
#endif

71
include/floppy.h Normal file
View File

@ -0,0 +1,71 @@
#ifndef CRASHPOWEROS_FLOPPY_H
#define CRASHPOWEROS_FLOPPY_H
#define DG144_HEADS 2 /* 每个磁道中的磁头数 (1.44M) */
#define DG144_TRACKS 80 /* 每个驱动器的磁道数 (1.44M) */
#define DG144_SPT 18 /* 每个磁头中的的扇区数 (1.44M) */
#define DG144_GAP3FMT 0x54 /* GAP3格式化 (1.44M) */
#define DG144_GAP3RW 0x1b /* GAP3（读/写） (1.44M) */
#define DG168_HEADS 2 /* 每个磁道中的磁头数 (1.68M) */
#define DG168_TRACKS 80 /* 每个驱动器的磁道数 (1.68M) */
#define DG168_SPT 21 /* 每个磁头中的的扇区数 (1.68M) */
#define DG168_GAP3FMT 0x0c /* GAP3格式化 (1.68M) */
#define DG168_GAP3RW 0x1c /* GAP3（读/写） (1.68M) */
/* i/o端口定义 */
#define FDC_DOR (0x3f2) /* 数字输出寄存器 */
#define FDC_MSR (0x3f4) /* 主要状态寄存器（输入） */
#define FDC_DRS (0x3f4) /* DRS寄存器 */
#define FDC_DATA (0x3f5) /* 数据寄存器 */
#define FDC_DIR (0x3f7) /* 数字输入寄存器（输入） */
#define FDC_CCR (0x3f7) /* CCR寄存器 */
/* 软盘命令 */
#define CMD_SPECIFY (0x03) /* 指定驱动器计时 */
#define CMD_WRITE (0xc5) /* 写（写入数据的最小单位是扇区） */
#define CMD_READ (0xe6) /* 读（读取扇区的最小单位是扇区） */
#define CMD_RECAL (0x07) /* 重新校准软盘 */
#define CMD_SENSEI (0x08) /* 中断状态 */
#define CMD_FORMAT (0x4d) /* 格式化磁道 */
#define CMD_SEEK (0x0f) /* 寻找磁道 */
#define CMD_VERSION (0x10) /* 获取软盘驱动器的版本 */
#define SECTORS_ONCE 4
#include "isr.h"
typedef struct DrvGeom {
unsigned char heads;
unsigned char tracks;
unsigned char spt; /* 每轨扇区数 */
} DrvGeom;
int getbyte();
void sendbyte(int byte);
void motoron(void);
void motoroff(void);
void recalibrate(void);
void init_floppy();
void hts2block(int track, int head, int sector, int* block);
void block2hts(int block, int* track, int* head, int* sector);
int seek(int track);
void wait_floppy_interrupt();
void reset(void);
int fdc_rw(int block,
unsigned char* blockbuff,
int read,
unsigned long nosectors);
void flint(registers_t *reg);
int write_floppy_for_ths(int track,
int head,
int sec,
unsigned char* blockbuff,
unsigned long nosec);
int fdc_rw_ths(int track,
int head,
int sector,
unsigned char* blockbuff,
int read,
unsigned long nosectors);
#endif

5
include/list.h
View File

@ -20,5 +20,10 @@ typedef struct List List;
struct List* FindForCount(size_t count, struct List* Obj);
int GetLastCount(struct List* Obj);
void DeleteList(struct List* Obj);
struct List* NewList();
void Change(size_t count, struct List* Obj, uintptr_t val);
void DeleteVal(size_t count, struct List* Obj);
void AddVal(uintptr_t val, struct List* Obj);
#endif

2
include/memory.h
View File

@ -85,4 +85,6 @@ void init_page();
void memclean(char *s, int len);
void *realloc(void *ptr, uint32_t size);
#endif //CRASHPOWEROS_MEMORY_H

26
include/timer.h
View File

@ -1,10 +1,34 @@
#ifndef CRASHPOWEROS_TIMER_H
#define CRASHPOWEROS_TIMER_H
#define MAX_TIMER 500
#define TIMER_FLAGS_ALLOC 1 /* 已配置状态 */
#define TIMER_FLAGS_USING 2 /* 定时器运行中 */
#include <stdint.h>
#include "task.h"
struct TIMER {
struct TIMER *next;
unsigned int timeout, flags;
struct FIFO8 *fifo;
unsigned char data;
struct task_struct *waiter;
};
struct TIMERCTL {
unsigned int count, next;
struct TIMER *t0;
struct TIMER timers0[MAX_TIMER];
};
void init_timer(uint32_t timer);
void timer_free(struct TIMER *timer);
void timer_init(struct TIMER *timer, struct FIFO8 *fifo, unsigned char data);
void timer_settime(struct TIMER *timer, unsigned int timeout);
void clock_sleep(uint32_t timer);
struct TIMER *timer_alloc(void);
unsigned int time(void);
void init_pit(void);
#endif //CRASHPOWEROS_TIMER_H

71
include/vfs.h Normal file
View File

@ -0,0 +1,71 @@
#ifndef CRASHPOWEROS_VFS_H
#define CRASHPOWEROS_VFS_H
#define toupper(c) ((c) >= 'a' && (c) <= 'z' ? c - 32 : c)
#include "common.h"
#include "list.h"
typedef struct FILE {
unsigned int mode;
unsigned int fileSize;
unsigned char *buffer;
unsigned int bufferSize;
unsigned int p;
char *name;
} FILE;
typedef enum { FLE, DIR, RDO, HID, SYS } ftype;
typedef struct {
char name[255];
ftype type;
unsigned int size;
unsigned short year, month, day;
unsigned short hour, minute;
} vfs_file;
typedef struct vfs_t {
struct List *path;
void *cache;
char FSName[255];
int disk_number;
uint8_t drive; // 大写（必须）
vfs_file *(*FileInfo)(struct vfs_t *vfs, char *filename);
struct List *(*ListFile)(struct vfs_t *vfs, char *dictpath);
bool (*ReadFile)(struct vfs_t *vfs, char *path, char *buffer);
bool (*WriteFile)(struct vfs_t *vfs, char *path, char *buffer, int size);
bool (*DelFile)(struct vfs_t *vfs, char *path);
bool (*DelDict)(struct vfs_t *vfs, char *path);
bool (*CreateFile)(struct vfs_t *vfs, char *filename);
bool (*CreateDict)(struct vfs_t *vfs, char *filename);
bool (*RenameFile)(struct vfs_t *vfs, char *filename, char *filename_of_new);
bool (*Attrib)(struct vfs_t *vfs, char *filename, ftype type);
bool (*Format)(uint8_t disk_number);
void (*InitFs)(struct vfs_t *vfs, uint8_t disk_number);
void (*DeleteFs)(struct vfs_t *vfs);
bool (*Check)(uint8_t disk_number);
bool (*cd)(struct vfs_t *vfs, char *dictName);
int (*FileSize)(struct vfs_t *vfs, char *filename);
void (*CopyCache)(struct vfs_t *dest, struct vfs_t *src);
int flag;
} vfs_t;
bool vfs_mount_disk(uint8_t disk_number, uint8_t drive);
bool vfs_unmount_disk(uint8_t drive);
bool vfs_readfile(char *path, char *buffer);
bool vfs_writefile(char *path, char *buffer, int size);
uint32_t vfs_filesize(char *filename);
List *vfs_listfile(char *dictpath);
bool vfs_delfile(char *filename);
bool vfs_deldir(char *dictname);
bool vfs_createfile(char *filename);
bool vfs_createdict(char *filename);
bool vfs_renamefile(char *filename, char *filename_of_new);
bool vfs_attrib(char *filename, ftype type);
bool vfs_format(uint8_t disk_number, char *FSName);
vfs_file *vfs_fileinfo(char *filename);
bool vfs_change_disk(uint8_t drive);
bool vfs_register_fs(vfs_t vfs);
void init_vfs();
#endif

380
kernel/fat.c
View File

@ -1,380 +0,0 @@
/*
* PlantsOS fat FileSystem
* Copyright by min0911
*/
#include "../include/vdisk.h"
#include "../include/fat.h"
#include "../include/memory.h"
#include "../include/list.h"
#include "../include/common.h"
/*
static inline int get_fat_date(unsigned short year, unsigned short month,
unsigned short day) {
year -= 1980;
unsigned short date = 0;
date |= (year & 0x7f) << 9;
date |= (month & 0x0f) << 5;
date |= (day & 0x1f);
return date;
}
static inline int get_fat_time(unsigned short hour, unsigned short minute) {
unsigned short time = 0;
time |= (hour & 0x1f) << 11;
time |= (minute & 0x3f) << 5;
return time;
}
void read_fat(unsigned char *img, int *fat, unsigned char *ff, int max,
int type) {
if (type == 12) {
for (int i = 0, j = 0; i < max; i += 2) {
fat[i + 0] = (img[j + 0] | img[j + 1] << 8) & 0xfff;
fat[i + 1] = (img[j + 1] >> 4 | img[j + 2] << 4) & 0xfff;
j += 3;
}
// 保留簇
ff[0] = 1;
ff[1] = 1;
for (int i = 1; i < max; i++) {
if (fat[i] > 0 && fat[i] < 0xff0) {
ff[fat[i]] = 1;
} else if (fat[i] >= 0xff0 && fat[i] <= 0xfff) {
ff[i + 1] = 1;
}
}
} else if (type == 16) {
unsigned short *p = (unsigned short *)img;
for (int i = 0; i != max; i++) {
fat[i] = p[i];
}
ff[0] = 1;
ff[1] = 1;
for (int i = 1; i < max; i++) {
if (fat[i] > 0 && fat[i] < 0xfff0) {
ff[fat[i]] = 1;
} else if (fat[i] >= 0xfff0 && fat[i] <= 0xffff) {
ff[i + 1] = 1;
}
}
} else if (type == 32) {
unsigned int *p = (unsigned int *)img;
for (int i = 0; i != max; i++) {
fat[i] = p[i];
}
ff[0] = 1;
ff[1] = 1;
for (int i = 1; i < max; i++) {
if (fat[i] > 0 && fat[i] < 0xffffff0) {
ff[fat[i]] = 1;
} else if (fat[i] >= 0xffffff0 && fat[i] <= 0xfffffff) {
ff[i + 1] = 1;
}
}
}
return;
}
int get_directory_max(struct FAT_FILEINFO *directory, vfs_t *vfs) {
if (directory == get_dm(vfs).root_directory) {
return get_dm(vfs).RootMaxFiles;
}
for (int i = 1; FindForCount(i, get_dm(vfs).directory_list) != NULL; i++) {
struct List *l = FindForCount(i, get_dm(vfs).directory_list);
if ((struct FAT_FILEINFO *)l->val == directory) {
return (int)FindForCount(i, get_dm(vfs).directory_max_list)->val;
}
}
}
void file_loadfile(int clustno, int size, char *buf, int *fat, vfs_t *vfs) {
if (!size) {
return;
}
void *img = kmalloc(((size - 1) / get_dm(vfs).ClustnoBytes + 1) *
get_dm(vfs).ClustnoBytes);
for (int i = 0; i != (size - 1) / get_dm(vfs).ClustnoBytes + 1; i++) {
uint32_t sec = (get_dm(vfs).FileDataAddress +
(clustno - 2) * get_dm(vfs).ClustnoBytes) /
get_dm(vfs).SectorBytes;
Disk_Read(sec, get_dm(vfs).ClustnoBytes / get_dm(vfs).SectorBytes,
img + i * get_dm(vfs).ClustnoBytes, vfs->disk_number);
clustno = fat[clustno];
}
memcpy((void *)buf, img, size);
kfree(img, ((size - 1) / get_dm(vfs).SectorBytes + 1) *
get_dm(vfs).SectorBytes);
return;
}
void file_savefile(int clustno, int size, char *buf, int *fat,
unsigned char *ff, vfs_t *vfs) {
uint32_t clustall = 0;
int tmp = clustno;
int end = clustno_end(get_dm(vfs).type);
while (fat[clustno] != end) { // 计算文件占多少Fat项 Fat项 = 大小 / 簇大小 + 1
clustno = fat[clustno];
clustall++;
}
int old_clustno = clustno;
clustno = tmp;
int alloc_size;
if (size >
(clustall + 1) *
get_dm(vfs).ClustnoBytes) { // 新大小 > (旧大小 / 簇大小 + 1) * 簇大小
// 请求内存大小 = (新大小 / 簇大小 + 1) * 簇大小
alloc_size =
((size - 1) / get_dm(vfs).ClustnoBytes + 1) * get_dm(vfs).ClustnoBytes;
// 分配Fat（这里需要在写盘前分配）
for (int size1 = size; size1 > ((clustall + 1) * get_dm(vfs).ClustnoBytes);
size1 -= get_dm(vfs).ClustnoBytes) {
for (int i = 0; i != get_dm(vfs).FatMaxTerms; i++) {
if (!ff[i]) {
fat[old_clustno] = i;
old_clustno = i;
ff[i] = true;
break;
}
}
}
fat[old_clustno] = end; // 结尾Fat
ff[old_clustno] = true;
} else if (size <=
(clustall + 1) *
get_dm(vfs).ClustnoBytes) { // 新大小 <= (旧大小 / 簇大小
// + 1) * 簇大小
// 请求内存大小 = (旧大小 / 簇大小 + 1) * 簇大小
alloc_size = (clustall + 1) * get_dm(vfs).ClustnoBytes;
// 这里不分配Fat的原因是要清空更改后多余的数据
}
void *img = kmalloc(alloc_size);
clean((char *)img, alloc_size);
memcpy(img, buf, size); // 把要写入的数据复制到新请求的内存地址
for (int i = 0; i != (alloc_size / get_dm(vfs).ClustnoBytes); i++) {
uint32_t sec = (get_dm(vfs).FileDataAddress +
(clustno - 2) * get_dm(vfs).ClustnoBytes) /
get_dm(vfs).SectorBytes;
Disk_Write(sec, get_dm(vfs).ClustnoBytes / get_dm(vfs).SectorBytes,
img + i * get_dm(vfs).ClustnoBytes, vfs->disk_number);
clustno = fat[clustno];
}
kfree(img, alloc_size);
if (size <
clustall *
get_dm(vfs).ClustnoBytes) { // 新大小 < (旧大小 / 簇大小) * 簇大小
// 分配Fat（中间情况没必要分配）
int i = old_clustno;
for (int size1 = clustall * get_dm(vfs).ClustnoBytes; size1 > size;
size1 -= get_dm(vfs).ClustnoBytes) {
fat[i] = 0;
ff[i] = 0;
for (int j = 0; j != get_dm(vfs).FatMaxTerms; j++) {
if (fat[j] == i) {
i = j;
}
}
}
old_clustno = i;
fat[old_clustno] = end;
ff[old_clustno] = 1;
}
file_savefat(fat, 0, get_dm(vfs).FatMaxTerms, vfs);
}
void file_savefat(int *fat, int clustno, int length, vfs_t *vfs) {
unsigned char *img = get_dm(vfs).ADR_DISKIMG + get_dm(vfs).Fat1Address;
int size, sec;
if (get_dm(vfs).type == 12) {
for (int i = 0; i <= length; i++) {
if ((clustno + i) % 2 == 0) {
img[(clustno + i) * 3 / 2 + 0] = fat[clustno + i] & 0xff;
img[(clustno + i) * 3 / 2 + 1] =
(fat[clustno + i] >> 8 | (img[(clustno + i) * 3 / 2 + 1] & 0xf0)) &
0xff;
} else if ((clustno + i) % 2 != 0) {
img[(clustno + i - 1) * 3 / 2 + 1] =
((img[(clustno + i - 1) * 3 / 2 + 1] & 0x0f) | fat[clustno + i]
<< 4) &
0xff;
img[(clustno + i - 1) * 3 / 2 + 2] = (fat[clustno + i] >> 4) & 0xff;
}
}
size = length * 3 / 2 - 1;
sec = clustno * 3 / 2;
} else if (get_dm(vfs).type == 16) {
for (int i = 0; i <= length; i++) {
img[(clustno + i) * 2 + 0] = fat[clustno + i] & 0xff;
img[(clustno + i) * 2 + 1] = (fat[clustno + i] >> 8) & 0xff;
}
size = length * 2 - 1;
sec = clustno * 2;
} else if (get_dm(vfs).type == 32) {
for (int i = 0; i <= length; i++) {
img[(clustno + i) * 4 + 0] = fat[clustno + i] & 0xff;
img[(clustno + i) * 4 + 1] = (fat[clustno + i] >> 8) & 0xff;
img[(clustno + i) * 4 + 2] = (fat[clustno + i] >> 16) & 0xff;
img[(clustno + i) * 4 + 3] = fat[clustno + i] >> 24;
}
size = length * 4 - 1;
sec = clustno * 4;
}
Disk_Write((get_dm(vfs).Fat1Address + sec) / get_dm(vfs).SectorBytes,
size / get_dm(vfs).SectorBytes + 1,
get_dm(vfs).ADR_DISKIMG + get_dm(vfs).Fat1Address,
vfs->disk_number);
Disk_Write((get_dm(vfs).Fat2Address + sec) / get_dm(vfs).SectorBytes,
size / get_dm(vfs).SectorBytes + 1,
get_dm(vfs).ADR_DISKIMG + get_dm(vfs).Fat2Address,
vfs->disk_number);
}
struct FAT_FILEINFO *file_search(char *name, struct FAT_FILEINFO *finfo,
int max) {
int i, j;
char s[12];
for (j = 0; j < 11; j++) {
s[j] = ' ';
}
j = 0;
for (i = 0; name[i] != 0; i++) {
if (j >= 11) {
return 0; //没有找到
}
if (name[i] == '.' && j <= 8) {
j = 8;
} else {
s[j] = name[i];
if ('a' <= s[j] && s[j] <= 'z') {
//将小写字母转换为大写字母
s[j] -= 0x20;
}
j++;
}
}
for (i = 0; i < max;) {
if (finfo[i].name[0] == 0x00) {
break;
}
if ((finfo[i].type & 0x18) == 0) {
for (j = 0; j < 11; j++) {
if (finfo[i].name[j] != s[j]) {
goto next;
}
}
return finfo + i; //找到文件
}
next:
i++;
}
return 0; //没有找到
}
struct FAT_FILEINFO *dict_search(char *name, struct FAT_FILEINFO *finfo,
int max) {
int i, j;
char s[12];
for (j = 0; j < 11; j++) {
s[j] = ' ';
}
j = 0;
for (i = 0; name[i] != 0; i++) {
if (j >= 11) {
return 0; //没有找到
} else {
s[j] = name[i];
if ('a' <= s[j] && s[j] <= 'z') {
//将小写字母转换为大写字母
s[j] -= 0x20;
}
j++;
}
}
for (i = 0; i < max;) {
if (finfo[i].name[0] == 0x00) {
break;
}
if (finfo[i].type == 0x10) {
for (j = 0; j < 11; j++) {
if (finfo[i].name[j] != s[j]) {
goto next;
}
}
return finfo + i; // 找到文件
}
next:
i++;
}
return 0; //没有找到
}
struct FAT_FILEINFO *Get_File_Address(char *path1, vfs_t *vfs) {
// TODO: Modifly it
struct FAT_FILEINFO *bmpDict = get_now_dir(vfs);
int drive_number = vfs->disk_number;
char *path = (char *)page_malloc(strlen(path1) + 1);
char *bmp = path;
strcpy(path, path1);
strtoupper(path);
if (strncmp("/", path, 1) == 0) {
path += 1;
bmpDict = get_dm(vfs).root_directory;
}
if (path[0] == '\\' || path[0] == '/') {
//跳过反斜杠和正斜杠
for (int i = 0; i < strlen(path); i++) {
if (path[i] != '\\' && path[i] != '/') {
path += i;
break;
}
}
}
char *temp_name = (char *)kmalloc(128);
struct FAT_FILEINFO *finfo = get_dm(vfs).root_directory;
int i = 0;
while (1) {
int j;
for (j = 0; i < strlen(path); i++, j++) {
if (path[i] == '\\' || path[i] == '/') {
temp_name[j] = '\0';
i++;
break;
}
temp_name[j] = path[i];
}
finfo = dict_search(temp_name, bmpDict, get_directory_max(bmpDict, vfs));
if (finfo == 0) {
if (path[i] != '\0') {
kfree((void *)temp_name, 128);
kfree((void *)bmp, strlen(path1) + 1);
return 0;
}
finfo = file_search(temp_name, bmpDict, get_directory_max(bmpDict, vfs));
if (finfo == 0) {
kfree((void *)temp_name, 128);
kfree((void *)bmp, strlen(path1) + 1);
return 0;
} else {
goto END;
}
} else {
if (get_clustno(finfo->clustno_high, finfo->clustno_low) != 0) {
for (int count = 1;
FindForCount(count, get_dm(vfs).directory_clustno_list) != NULL;
count++) {
struct List *list =
FindForCount(count, get_dm(vfs).directory_clustno_list);
if (get_clustno(finfo->clustno_high, finfo->clustno_low) ==
list->val) {
list = FindForCount(count, get_dm(vfs).directory_list);
bmpDict = (struct FAT_FILEINFO *)list->val;
break;
}
}
} else {
bmpDict = get_dm(vfs).root_directory;
}
clean(temp_name, 128);
}
}
END:
kfree((void *)temp_name, 128);
kfree((void *)bmp, strlen(path1) + 1);
return finfo;
}
*/

12
kernel/kernel.c
View File

@ -15,6 +15,8 @@
#include "../include/vdisk.h"
#include "../include/pci.h"
#include "../include/pcnet.h"
#include "../include/fat.h"
#include "../include/floppy.h"
extern uint32_t end;
extern int status;
@ -64,22 +66,26 @@ void kernel_main(multiboot_t *multiboot) {
init_keyboard();
printf("[\035kernel\036]: Keyboard driver load success!\n");
multiboot_all = multiboot;
io_sti();
init_pit();
init_vdisk();
init_pci();
init_vfs();
//init_floppy();
Register_fat_fileSys();
syscall_install();
if(pcnet_find_card()){
init_pcnet_card();
//init_pcnet_card();
} else printf("[\035kernel\036]: \033Cannot found pcnet.\036\n");
print_cpu_id();
io_sti();
printf("Memory: %dMB.",(multiboot->mem_upper + multiboot->mem_lower)/1024/1024);
clock_sleep(25);
//kernel_thread(setup_shell, NULL, "CPOS-Shell");
kernel_thread(setup_shell, NULL, "CPOS-Shell");
launch_date();
for (;;) {

10
kernel/memory.c
View File

@ -50,3 +50,13 @@ void *memmove(void *dest, const void *src, size_t num) {
}
return ret;
}
void *realloc(void *ptr, uint32_t size) {
void *new = kmalloc(size);
if (ptr) {
memcpy(new, ptr, *(int *)((int)ptr - 4));
kfree(ptr);
}
return new;
}

86
kernel/timer.c
View File

@ -1,11 +1,19 @@
#include "../include/timer.h"
#include "../include/io.h"
#include "../include/graphics.h"
#include "../include/isr.h"
#include "../include/task.h"
#include "../include/cmos.h"
uint32_t tick = 0;
extern struct task_struct *current;
struct TIMERCTL timerctl;
unsigned int time(void) {
unsigned int t;
t = get_year() * get_mon() * get_day_of_month() * get_hour() * get_min() * get_sec() + timerctl.count + timerctl.next;
t |= (int)timerctl.t0;
t |= get_day_of_week();
return t;
}
static void timer_handle(registers_t *regs) {
io_cli();
@ -22,7 +30,29 @@ void clock_sleep(uint32_t timer){
}
}
void init_pit(void) {
io_out8(0x43, 0x34);
io_out8(0x40, 0x9c);
io_out8(0x40, 0x2e);
int i;
struct TIMER *t;
timerctl.count = 0;
for (i = 0; i < MAX_TIMER; i++) {
timerctl.timers0[i].flags = 0; /* 没有使用 */
}
t = timer_alloc(); /* 取得一个 */
t->timeout = 0xffffffff;
t->flags = TIMER_FLAGS_USING;
t->next = 0; /* 末尾 */
timerctl.t0 = t; /* 因为现在只有哨兵，所以他就在最前面*/
timerctl.next =
0xffffffff; /* 因为只有哨兵，所以下一个超时时刻就是哨兵的时刻 */
return;
}
void init_timer(uint32_t timer) {
printf("REG TIMER INT: %d, function address: %08x.\n",IRQ0, &timer_handle);
register_interrupt_handler(IRQ0, &timer_handle);
uint32_t divisor = 1193180 / timer;
@ -34,3 +64,55 @@ void init_timer(uint32_t timer) {
outb(0x40, l);
outb(0x40, h);
}
struct TIMER *timer_alloc(void) {
int i;
for (i = 0; i < MAX_TIMER; i++) {
if (timerctl.timers0[i].flags == 0) {
timerctl.timers0[i].flags = TIMER_FLAGS_ALLOC;
timerctl.timers0[i].waiter = NULL;
return &timerctl.timers0[i];
}
}
return 0; /* 没找到 */
}
void timer_free(struct TIMER *timer) {
timer->flags = 0; /* 未使用 */
timer->waiter = NULL;
return;
}
void timer_init(struct TIMER *timer, struct FIFO8 *fifo, unsigned char data) {
timer->fifo = fifo;
timer->data = data;
return;
}
void timer_settime(struct TIMER *timer, unsigned int timeout) {
int e;
struct TIMER *t, *s;
timer->timeout = timeout + timerctl.count;
timer->flags = TIMER_FLAGS_USING;
e = io_load_eflags();
t = timerctl.t0;
if (timer->timeout <= t->timeout) {
/* 插入最前面的情况 */
timerctl.t0 = timer;
timer->next = t; /* 下面是设定t */
timerctl.next = timer->timeout;
io_store_eflags(e);
return;
}
for (;;) {
s = t;
t = t->next;
if (timer->timeout <= t->timeout) {
/* 插入s和t之间的情况 */
s->next = timer; /* s下一个是timer */
timer->next = t; /* timer的下一个是t */
io_store_eflags(e);
return;
}
}
}

20
network/pcnet.c
View File

@ -5,6 +5,7 @@
#include "../include/timer.h"
#include "../include/memory.h"
#include "../include/printf.h"
#include "../include/dhcp.h"
uint8_t bus = 255, dev = 255, func = 255;
@ -56,7 +57,10 @@ void reset_card() {
void Activate() {
// 激活PCNET IRQ中断
io_out16(io_base + RAP16, CSR0);
printf("[pcnet]: io\n");
io_out16(io_base + RDP16, 0x41);
printf("[pcnet]: success.\n");
io_out16(io_base + RAP16, CSR4);
uint32_t temp = io_in16(io_base + RDP16);
@ -65,6 +69,7 @@ void Activate() {
io_out16(io_base + RAP16, CSR0);
io_out16(io_base + RDP16, 0x42);
}
int pcnet_find_card() {
@ -88,6 +93,8 @@ static void init_Card_all() {
reset_card();
clock_sleep(1);
io_out16(io_base + RAP16, BCR20);
io_out16(io_base + BDP16, 0x102);
io_out16(io_base + RAP16, CSR0);
@ -146,28 +153,19 @@ static void init_Card_all() {
ip == 0xFFFFFFFF) {
initBlock.logicalAddress = ip;
}
// 初始化ARP表
// DNSParseIP("baidu.com");
// UDPProviderSend(0x761ff8d7, initBlock.logicalAddress, 52949, 38,
// "来自Powerint DOS 386的消息：我是周志昊！！！", strlen("来自Powerint DOS
// 386的消息：我是周志昊！！！"));
}
void init_pcnet_card() {
printf("[\035kernel\036]: Loading pcnet driver.\n");
// 允许PCNET网卡产生中断
// 1.注册中断
register_interrupt_handler(pci_get_drive_irq(bus, dev, func),PCNET_IRQ);
// 2,写COMMAND和STATUS寄存器
uint32_t conf = pci_read_command_status(bus, dev, func);
conf &= 0xffff0000; // 保留STATUS寄存器，清除COMMAND寄存器
conf |= 0x7; // 设置第0~2位（允许PCNET网卡产生中断
pci_write_command_status(bus, dev, func, conf);
io_base = pci_get_port_base(bus, dev, func);
init_Card_all();
}

36
util/common.c
View File

@ -5,6 +5,42 @@
static char num_str_buf[BUF_SIZE];
void insert_char(char* str, int pos, char ch) {
int i;
for (i = strlen(str); i >= pos; i--) {
str[i + 1] = str[i];
}
str[pos] = ch;
}
void delete_char(char* str, int pos) {
int i;
for (i = pos; i < strlen(str); i++) {
str[i] = str[i + 1];
}
}
void strtoupper(char* str) {
while (*str != '\0') {
if (*str >= 'a' && *str <= 'z') {
*str -= 32;
}
str++;
}
}
int strncmp(const char* s1, const char* s2, size_t n) {
const unsigned char *p1 = (const unsigned char*)s1,
*p2 = (const unsigned char*)s2;
while (n-- > 0) {
if (*p1 != *p2)
return *p1 - *p2;
if (*p1 == '\0')
return 0;
p1++, p2++;
}
return 0;
}
long int strtol(const char *str,char **endptr,int base){
const char *s;
unsigned long acc;

73
util/list.c
View File

@ -1,4 +1,5 @@
#include "../include/list.h"
#include "../include/memory.h"
int GetLastCount(struct List* Obj) {
return Obj->ctl->all;
@ -19,3 +20,75 @@ struct List* FindForCount(size_t count, struct List* Obj) {
q = q->prev;
}
}
void Change(size_t count, struct List* Obj, uintptr_t val) {
struct List* Will_Change = FindForCount(count + 1, Obj);
if (Will_Change != NULL) {
Will_Change->val = val;
} else {
AddVal(val, Obj);
}
}
void DeleteList(struct List* Obj) {
Obj = Obj->ctl->start;
kfree((void *)Obj->ctl);
for (; Obj != (struct List*)NULL;) {
//printf("Will free: %llx\n", Obj);
struct List* tmp = Obj;
Obj = Obj->next;
kfree((void *)tmp);
}
return;
}
struct List* NewList() {
struct List* Obj = (struct List*)kmalloc(sizeof(struct List));
struct ListCtl* ctl = (struct ListCtl*)kmalloc(sizeof(struct ListCtl));
Obj->ctl = ctl;
Obj->ctl->start = Obj;
Obj->ctl->end = Obj;
Obj->val = 0x123456; // 头结点数据不可用
Obj->prev = (List*)NULL;
Obj->next = (List*)NULL;
Obj->ctl->all = 0;
return Obj;
}
void DeleteVal(size_t count, struct List* Obj) {
struct List* Will_Free = FindForCount(count, Obj);
if (Will_Free == NULL) {
// Not found!
return;
}
if (count == 0) {
return;
}
if (Will_Free->next == (List*)NULL) {
// 是尾节点
struct List* prev = FindForCount(count - 1, Obj);
prev->next = (List*)NULL;
prev->ctl->end = prev;
} else {
struct List* prev = FindForCount(count - 1, Obj);
struct List* next = FindForCount(count + 1, Obj);
prev->next = next;
next->prev = prev;
}
kfree((void *)Will_Free);
Obj->ctl->all--;
}
void AddVal(uintptr_t val, struct List* Obj) {
while (Obj->next != NULL)
Obj = Obj->next;
Obj = Obj->ctl->end;
struct List* new = (struct List*)kmalloc(sizeof(struct List));
Obj->next = new;
Obj->ctl->end = new;
new->prev = Obj;
new->ctl = Obj->ctl;
new->next = (List*)NULL;
new->val = val;
new->ctl->all++;
}

12
util/rand.c Normal file
View File

@ -0,0 +1,12 @@
#include "../include/common.h"
static unsigned long next1 = 1;
unsigned int rand(void) {
next1 = next1 * 1103515245 + 12345;
return ((unsigned int)(next1));
}
void srand(unsigned long seed) {
next1 = seed;
}