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