/*
* Creates an image
*/
void create_image(void* image, int size)
{
initrd = image;
vol_header = (IFSVolume*)image;
memset(vol_header, 0, size);
vol_header->file_block_size = 1024;
vol_header->block_pool_size = (0xFFFF * sizeof(IFSBlock));
placement = sizeof(IFSVolume) + (0xFFFF * sizeof(IFSBlock)) ;
block_pool = (image + sizeof(IFSVolume));
for(int i = 0; i < 0xFFFF; i++)
block_pool[i].state = BLOCK_NONEXISTENT;
vol_header->root_directory = 0;
IFSFileEntry* rootdir = ifs_create_file_entry();
rootdir->data_index = 1;
IFSBlock* root = ifs_block_alloc();
memset(initrd + ifs_get_address(1), 0xFF, 1024);
/*
* Yes Courtney, even though you completely f****d me over
* in just about every respect, I immortalized you in the IFS
* magic number. Not that you will ever see this. Maybe because
* I still love you, maybe because, well I have no f*****g clue....
*
* Magic number: 0xCB0A0D0D (Big endian)
*/
vol_header->mag0 = 0xCB;
vol_header->mag1 = 0x0A;
vol_header->mag2 = 0x0D;
vol_header->mag3 = 0x0D;
}
static int ifs_symlink(struct device *dev, const char *from, const char *to)
{
int d_block = ifs_block_alloc(dev, 1024);
struct ifs_entry dir;
dir.mode = 0444;
dir.file_type = IFS_LINK;
dir.data_index = d_block;
dir.file_size = 1024;
dir.uid = getuid();
dir.gid = getgid();
strcpy(dir.file_name, basename(from));
int e = ifs_insert_entry(dev, from, &dir);
device_write(dev, to, (strlen(to) + 1) % 1024, ifs_get_address(dev, d_block));
return 0;
}
static int ifs_creat(struct device *dev, const char *path, mode_t mode)
{
int d_block = ifs_block_alloc(dev, 1024);
struct ifs_entry dir;
dir.mode = mode;
dir.file_type = IFS_DIRECTORY;
dir.data_index = d_block;
dir.file_size = 0;
dir.uid = getuid();
dir.gid = getgid();
strcpy(dir.file_name, basename(path));
int e = ifs_insert_entry(dev, path, &dir);
int32_t files[256];
memset(files, 0xFF, 1024);
device_write(dev, files, 1024, ifs_get_address(dev, d_block));
}
static inline int ifs_insert_entry(struct device *dev, const char *path, struct ifs_entry *entry)
{
int e_block = ifs_block_alloc(dev, 1024);
entry->block_index = e_block;
int parent = ifs_get_parent(dev, path);
struct ifs_entry p_ent;
device_read(dev, &p_ent, sizeof(struct ifs_entry), ifs_get_address(dev, parent));
int32_t *files = (int32_t *)kalloc(1024);
device_read(dev, files, 1024, ifs_get_address(dev, p_ent.data_index));
int i = 0;
while (files[i] != -1) i++;
files[i] = e_block;
device_write(dev, files, 1024, ifs_get_address(dev, p_ent.data_index));
device_write(dev, entry, sizeof(struct ifs_entry), ifs_get_address(dev, e_block));
kfree(files);
return e_block;
}
