68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
#include "fs.hpp"
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Fs::Fs(RawDisk *disk) : disk(disk) {
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superblock = SuperBlock_Data();
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inode_manager = new INode_Manager_Freelist(this, 1, 1 + NUM_INODE_BLOCKS);
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datablock_manager =
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new DataBlock_Manager_Bitmap(this, 1 + NUM_INODE_BLOCKS, NUM_BLOCKS);
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};
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Fs::~Fs() {
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delete inode_manager;
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delete datablock_manager;
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};
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int Fs::format() {
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int err;
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if ((err = save_superblock()) < 0)
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return err;
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if ((err = inode_manager->format()) < 0)
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return err;
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if ((err = datablock_manager->format()) < 0)
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return err;
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return 0;
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}
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int Fs::load_superblock() {
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char buf[IO_BLOCK_SIZE];
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int err;
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if ((err = disk->read_block(0, buf)) < 0)
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return err;
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superblock.deserialize(buf);
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return 0;
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}
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int Fs::save_superblock() {
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char buf[IO_BLOCK_SIZE] = {0};
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int err;
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superblock.serialize(buf);
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if ((err = disk->write_block(0, buf)) < 0)
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return err;
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return 0;
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}
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int Fs::save_free_list_head(u_int64_t new_free_list_head) {
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u_int64_t temp = superblock.free_list_head;
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int err;
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superblock.free_list_head = new_free_list_head;
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if ((err = save_superblock()) < 0) {
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superblock.free_list_head = temp;
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return err;
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}
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return 0;
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}
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int Fs::save_inode_list_head(u_int64_t new_inode_list_head) {
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u_int64_t temp = superblock.inode_list_head;
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int err;
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superblock.inode_list_head = new_inode_list_head;
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if ((err = save_superblock()) < 0) {
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superblock.inode_list_head = temp;
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return err;
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}
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return 0;
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} |