int get_partition_size(const char *partition_name, u64 *size_in_kilobytes)
{
FILE *fp;
char disk_name[4];
char target_file[128], buf[16], *ptr;
if(size_in_kilobytes == NULL)
return 0;
*size_in_kilobytes = 0; // initial value.
if(!is_partition_name(partition_name, NULL))
return 0;
strncpy(disk_name, partition_name, 3);
disk_name[3] = 0;
sprintf(target_file, "%s/%s/%s/size", SYS_BLOCK, disk_name, partition_name);
if((fp = fopen(target_file, "r")) == NULL)
return 0;
memset(buf, 0, sizeof(buf));
ptr = fgets(buf, sizeof(buf), fp);
fclose(fp);
if(ptr == NULL)
return 0;
*size_in_kilobytes = ((u64)strtoll(buf, NULL, 10))/2;
return 1;
}
char *get_disk_name(const char *string, char *buf, const int buf_size){
int len;
if(string == NULL || buf_size <= 0)
return NULL;
if(!is_disk_name(string) && !is_partition_name(string, NULL))
return NULL;
len = strlen(string);
if(!is_disk_name(string)){
while(isdigit(string[len-1]))
--len;
}
if(len > buf_size)
return NULL;
memset(buf, 0, buf_size);
strncpy(buf, string, len);
return buf;
}
partition_info_t *create_partition(const char *device_name, partition_info_t **new_part_info)
{
partition_info_t *follow_part_info;
u32 partition_order;
u64 size_in_kilobytes = 0, total_kilobytes = 0, used_kilobytes = 0;
char buf1[PATH_MAX], buf2[64], buf3[PATH_MAX]; // options of mount info needs more buffer size.
int len;
if(new_part_info == NULL)
return NULL;
*new_part_info = NULL; // initial value.
if(device_name == NULL || get_device_type_by_device(device_name) != DEVICE_TYPE_DISK)
return NULL;
if(!is_disk_name(device_name) && !is_partition_name(device_name, &partition_order))
return NULL;
if(initial_part_data(&follow_part_info) == NULL)
return NULL;
len = strlen(device_name);
follow_part_info->device = (char *)malloc(len+1);
if(!follow_part_info->device){
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->device, device_name, len);
follow_part_info->device[len] = 0;
follow_part_info->partition_order = partition_order;
if(read_mount_data(device_name, buf1, buf2, buf3)){
len = strlen(buf1);
follow_part_info->mount_point = (char *)malloc(len+1);
if(!follow_part_info->mount_point){
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->mount_point, buf1, len);
follow_part_info->mount_point[len] = 0;
len = strlen(buf2);
follow_part_info->file_system = (char *)malloc(len+1);
if(!follow_part_info->file_system){
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->file_system, buf2, len);
follow_part_info->file_system[len] = 0;
len = strlen(buf3);
follow_part_info->permission = (char *)malloc(len+1);
if(!follow_part_info->permission){
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->permission, buf3, len);
follow_part_info->permission[len] = 0;
if(get_mount_size(follow_part_info->mount_point, &total_kilobytes, &used_kilobytes)){
follow_part_info->size_in_kilobytes = total_kilobytes;
follow_part_info->used_kilobytes = used_kilobytes;
}
}
else{
if(is_disk_name(device_name)){ // Disk
free_partition_data(&follow_part_info);
return NULL;
}
else{
len = strlen(PARTITION_TYPE_UNKNOWN);
follow_part_info->file_system = (char *)malloc(len+1);
if(!follow_part_info->file_system){
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->file_system, PARTITION_TYPE_UNKNOWN, len);
follow_part_info->file_system[len] = 0;
get_partition_size(device_name, &size_in_kilobytes);
follow_part_info->size_in_kilobytes = size_in_kilobytes;
}
}
*new_part_info = follow_part_info;
return *new_part_info;
}
disk_info_t *read_disk_data(void)
{
FILE *fp;
char line[64], device_name[32];
u32 major, minor;
disk_info_t *disk_info_list, *parent_disk_info, **follow_disk_info_list;
partition_info_t *new_partition_info, **follow_partition_list;
unsigned long long device_size;
fp = fopen(PARTITION_FILE, "r");
if (!fp)
return NULL;
if (!fgets(line, sizeof(line), fp)) {
fclose(fp);
return NULL;
}
fgets(line, sizeof(line), fp);
disk_info_list = NULL;
while (fgets(line, sizeof(line), fp))
{
device_name[0] = 0;
if (sscanf(line, "%u %u %llu %[^\n ]", &major, &minor, &device_size, device_name) != 4)
continue;
if(major != USB_DISK_MAJOR)
continue;
if(device_size < 10)
continue;
if (is_disk_name(device_name))
{
follow_disk_info_list = &disk_info_list;
while(*follow_disk_info_list)
follow_disk_info_list = &((*follow_disk_info_list)->next);
create_disk(device_name, follow_disk_info_list);
}
else if (is_partition_name(device_name, NULL))
{
parent_disk_info = disk_info_list;
while(1)
{
if (!parent_disk_info)
goto info_exit;
if (!strncmp(device_name, parent_disk_info->device, 3))
break;
parent_disk_info = parent_disk_info->next;
}
follow_partition_list = &(parent_disk_info->partitions);
while(*follow_partition_list)
follow_partition_list = &((*follow_partition_list)->next);
new_partition_info = create_partition(device_name, follow_partition_list);
if(new_partition_info)
new_partition_info->disk = parent_disk_info;
}
}
info_exit:
fclose(fp);
return disk_info_list;
}
disk_info_t *read_disk_data(){
disk_info_t *disk_info_list = NULL, *new_disk_info, **follow_disk_info_list;
char *partition_info = read_whole_file(PARTITION_FILE);
char *follow_info;
char line[64], device_name[16];
u32 major;
disk_info_t *parent_disk_info;
partition_info_t *new_partition_info, **follow_partition_list;
u64 device_size;
if(partition_info == NULL){
usb_dbg("Failed to open \"%s\"!!\n", PARTITION_FILE);
return disk_info_list;
}
follow_info = partition_info;
memset(device_name, 0, 16);
while(get_line_from_buffer(follow_info, line, 64) != NULL){
follow_info += strlen(line);
if(sscanf(line, "%u %*u %llu %[^\n ]", &major, &device_size, device_name) != 3)
continue;
if(major != USB_DISK_MAJOR)
continue;
if(device_size == 1) // extend partition.
continue;
if(is_disk_name(device_name)){ // Disk
follow_disk_info_list = &disk_info_list;
while(*follow_disk_info_list != NULL)
follow_disk_info_list = &((*follow_disk_info_list)->next);
new_disk_info = create_disk(device_name, follow_disk_info_list);
}
else if(is_partition_name(device_name, NULL)){ // Partition
// Found a partition device.
// Find the parent disk.
parent_disk_info = disk_info_list;
while(1){
if(parent_disk_info == NULL){
usb_dbg("Error while parsing %s: found "
"partition '%s' but haven't seen the disk device "
"of which it is a part.\n", PARTITION_FILE, device_name);
free(partition_info);
return disk_info_list;
}
if(!strncmp(device_name, parent_disk_info->device, 3))
break;
parent_disk_info = parent_disk_info->next;
}
follow_partition_list = &(parent_disk_info->partitions);
while(*follow_partition_list != NULL){
if((*follow_partition_list)->partition_order == 0){
free_partition_data(follow_partition_list);
parent_disk_info->partitions = NULL;
follow_partition_list = &(parent_disk_info->partitions);
}
else
follow_partition_list = &((*follow_partition_list)->next);
}
new_partition_info = create_partition(device_name, follow_partition_list);
if(new_partition_info != NULL)
new_partition_info->disk = parent_disk_info;
}
}
free(partition_info);
return disk_info_list;
}
partition_info_t *create_partition(const char *device_name, partition_info_t **new_part_info){
partition_info_t *follow_part_info;
char label[128];
u32 partition_order = 0;
u64 size_in_kilobytes = 0, total_kilobytes = 0, used_kilobytes = 0;
char buf1[PATH_MAX], buf2[64], buf3[PATH_MAX]; // options of mount info needs more buffer size.
int len;
if(new_part_info == NULL){
usb_dbg("Bad input!!\n");
return NULL;
}
*new_part_info = NULL; // initial value.
if(device_name == NULL || get_device_type_by_device(device_name) != DEVICE_TYPE_DISK)
return NULL;
if(!is_disk_name(device_name) && !is_partition_name(device_name, &partition_order))
return NULL;
if(initial_part_data(&follow_part_info) == NULL){
usb_dbg("No memory!!(follow_part_info)\n");
return NULL;
}
len = strlen(device_name);
follow_part_info->device = (char *)malloc(len+1);
if(follow_part_info->device == NULL){
usb_dbg("No memory!!(follow_part_info->device)\n");
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->device, device_name, len);
follow_part_info->device[len] = 0;
if(find_partition_label(device_name, label)){
strntrim(label);
len = strlen(label);
follow_part_info->label = (char *)malloc(len+1);
if(follow_part_info->label == NULL){
usb_dbg("No memory!!(follow_part_info->label)\n");
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->label, label, len);
follow_part_info->label[len] = 0;
}
follow_part_info->partition_order = partition_order;
if(read_mount_data(device_name, buf1, PATH_MAX, buf2, 64, buf3, PATH_MAX)){
len = strlen(buf1);
follow_part_info->mount_point = (char *)malloc(len+1);
if(follow_part_info->mount_point == NULL){
usb_dbg("No memory!!(follow_part_info->mount_point)\n");
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->mount_point, buf1, len);
follow_part_info->mount_point[len] = 0;
len = strlen(buf2);
follow_part_info->file_system = (char *)malloc(len+1);
if(follow_part_info->file_system == NULL){
usb_dbg("No memory!!(follow_part_info->file_system)\n");
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->file_system, buf2, len);
follow_part_info->file_system[len] = 0;
len = strlen(buf3);
follow_part_info->permission = (char *)malloc(len+1);
if(follow_part_info->permission == NULL){
usb_dbg("No memory!!(follow_part_info->permission)\n");
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->permission, buf3, len);
follow_part_info->permission[len] = 0;
if(get_mount_size(follow_part_info->mount_point, &total_kilobytes, &used_kilobytes)){
follow_part_info->size_in_kilobytes = total_kilobytes;
follow_part_info->used_kilobytes = used_kilobytes;
}
}
else{
/*if(is_disk_name(device_name)){ // Disk
free_partition_data(&follow_part_info);
return NULL;
}
else{//*/
len = strlen(PARTITION_TYPE_UNKNOWN);
follow_part_info->file_system = (char *)malloc(len+1);
if(follow_part_info->file_system == NULL){
usb_dbg("No memory!!(follow_part_info->file_system)\n");
free_partition_data(&follow_part_info);
return NULL;
}
strncpy(follow_part_info->file_system, PARTITION_TYPE_UNKNOWN, len);
follow_part_info->file_system[len] = 0;
get_partition_size(device_name, &size_in_kilobytes);
follow_part_info->size_in_kilobytes = size_in_kilobytes;
//}
}
*new_part_info = follow_part_info;
return *new_part_info;
}