// -----------------------------------------------------------------------
void dev_flop5_destroy(void *dev)
{
if (!dev) return;
struct dev_flop5 *flop5 = (struct dev_flop5 *) dev;
e4i_close(flop5->image);
free(dev);
}
// -----------------------------------------------------------------------
void cmem_m9425_shutdown(struct cmem_unit_proto_t *unit)
{
if (unit) {
for (int i=0 ; i<=1 ; i++) {
e4i_close(UNIT->disk[i]);
UNIT->disk[i] = NULL;
}
free(UNIT);
}
}
// -----------------------------------------------------------------------
struct e4i_t * e4i_open(char *img_name)
{
int res;
e4i_err = E4I_E_OK;
struct e4i_t *e = calloc(1, sizeof(struct e4i_t));
if (!e) {
e4i_err = E4I_E_ALLOC;
return NULL;
}
// open image
e->image = fopen(img_name, "r+");
if (!e->image) {
e4i_err = E4I_E_OPEN;
e4i_close(e);
return NULL;
}
// read header
res = __e4i_header_read(e);
if (res != E4I_E_OK) {
e4i_err = res;
e4i_close(e);
return NULL;
}
// check header sanity
res = __e4i_header_check(e);
if (res != E4I_E_OK) {
e4i_err = res;
e4i_close(e);
return NULL;
}
e->cur_pos = 0;
e->img_name = strdup(img_name);
return e;
}
// -----------------------------------------------------------------------
struct e4i_t * __e4i_create(char *img_name, uint16_t id_size, uint16_t block_size, uint16_t cylinders, uint8_t heads, uint8_t spt, uint32_t blocks, uint32_t flags)
{
e4i_err = E4I_E_OK;
// we don't destroy images
struct stat st;
if (stat(img_name, &st) == 0) {
e4i_err = E4I_E_EXISTS;
return NULL;
}
struct e4i_t *e = calloc(1, sizeof(struct e4i_t));
if (!e) {
e4i_err = E4I_E_ALLOC;
return NULL;
}
// create image file
e->image = fopen(img_name, "w+");
if (!e->image) {
free(e);
e4i_err = E4I_E_OPEN;
return NULL;
}
// fill header data
strncpy(e->magic, E4I_MAGIC, 4);
e->v_major = E4I_IMAGE_V_MAJOR;
e->v_minor = E4I_IMAGE_V_MINOR;
e->flags = flags;
e->cylinders = cylinders;
e->heads = heads;
e->spt = spt;
e->blocks = blocks;
e->id_size = id_size;
e->block_size = block_size;
e->cur_pos = 0;
e->img_name = strdup(img_name);
int res;
// write header
res = __e4i_header_write(e);
if (res != E4I_E_OK) {
e4i_close(e);
e4i_err = res;
return NULL;
}
return e;
}
