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#include <stdint.h>
#include <kernel/fs/ata_pio.h>
#include <kernel/lib/stdlib.h>
#include <kernel/fs/marfs/marfs.h>
#include <kernel/memory/alloc.h>
uint32_t marfs_new_dir(uint32_t uid)
{
return marfs_new_file(0, 0, uid, 0, 1);
}
void marfs_add_to_dir(uint32_t lba_inode, char *filename, uint32_t lba)
{
struct marfs_inode *inode = (struct marfs_inode *)ata_read28(interface, lba_inode);
// Read the content
uint8_t *old = marfs_allocate_and_read_whole_file(lba_inode);
// Allocate memory
uint8_t *contents = (uint8_t *)kmalloc((uint32_t)(inode->size + strlen(filename) + 1 + 4));
// Copy the content
uint8_t last_was_null = 0;
uint64_t new_size = 0;
for (uint64_t i = 0; i < inode->size; i++) {
if (old[i] == 0 && last_was_null)
continue;
contents[new_size++] = old[i];
last_was_null = (uint8_t)(old[i] == 0);
}
kfree(old);
// Append new file
for (size_t i = 0; i <= strlen(filename); i++)
contents[new_size++] = (uint8_t)filename[i];
for (signed char j = 24; j > 0; j -= 8)
contents[new_size++] = (uint8_t)((lba >> j) & 0xFF);
// Free the blocks
uint32_t new_size_in_blocks = (uint32_t)(new_size / 512);
if (new_size % 512)
new_size_in_blocks++;
for (uint32_t i = 0; i < new_size_in_blocks; i++)
marfs_mark_block_as_free(marfs_get_block(inode, i));
// Overwrite
uint32_t aux_inode = marfs_new_file(new_size, contents, 0xDEADBEEF, 0, 0);
struct marfs_inode *real_aux_inode = (struct marfs_inode *)ata_read28(interface, aux_inode);
for (uint8_t i = 0; i < 10; i++)
inode->DBPs[i] = real_aux_inode->DBPs[i];
inode->ext_1 = real_aux_inode->ext_1;
inode->ext_2 = real_aux_inode->ext_2;
inode->ext_3 = real_aux_inode->ext_3;
inode->ext_4 = real_aux_inode->ext_4;
real_aux_inode->is_used = 0;
ata_write28(interface, aux_inode, (uint8_t *)real_aux_inode);
kfree(real_aux_inode);
inode->size = new_size;
ata_write28(interface, lba_inode, (uint8_t *)inode);
kfree(inode);
}
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