/*
* This function loads the device_info structure and put them in an array
*/
static int load_device_info(int fd, struct device_info **device_info_ptr,
int *device_info_count)
{
int ret, i, ndevs;
struct btrfs_ioctl_fs_info_args fi_args;
struct btrfs_ioctl_dev_info_args dev_info;
struct device_info *info;
*device_info_count = 0;
*device_info_ptr = NULL;
ret = ioctl(fd, BTRFS_IOC_FS_INFO, &fi_args);
if (ret < 0) {
if (errno == EPERM)
return -errno;
error("cannot get filesystem info: %s",
strerror(errno));
return 1;
}
info = calloc(fi_args.num_devices, sizeof(struct device_info));
if (!info) {
error("not enough memory");
return 1;
}
for (i = 0, ndevs = 0 ; i <= fi_args.max_id ; i++) {
BUG_ON(ndevs >= fi_args.num_devices);
memset(&dev_info, 0, sizeof(dev_info));
ret = get_device_info(fd, i, &dev_info);
if (ret == -ENODEV)
continue;
if (ret) {
error("cannot get info about device devid=%d", i);
free(info);
return ret;
}
info[ndevs].devid = dev_info.devid;
if (!dev_info.path[0]) {
strcpy(info[ndevs].path, "missing");
} else {
strcpy(info[ndevs].path, (char *)dev_info.path);
info[ndevs].device_size =
get_partition_size((char *)dev_info.path);
}
info[ndevs].size = dev_info.total_bytes;
++ndevs;
}
BUG_ON(ndevs != fi_args.num_devices);
qsort(info, fi_args.num_devices,
sizeof(struct device_info), cmp_device_info);
*device_info_count = fi_args.num_devices;
*device_info_ptr = info;
return 0;
}
/// check partition size
int check_size(int* ret, unsigned long long size) {
unsigned long long dest_size;
int debug = 1;
dest_size = get_partition_size(ret);
if (dest_size < size){
log_mesg(0, 1, 1, debug, "Target partition size(%llu MB) is smaller than source(%llu MB). Use option -C to disable size checking(Dangerous).\n", print_size(dest_size, MBYTE), print_size(size, MBYTE));
return 1;
}
return 0;
}
/// read super block and write to image head
extern void initial_image_hdr(char* device, image_head* image_hdr)
{
int src;
if ((src = open_source(device, &opt)) == -1) {
log_mesg(0, 1, 1, opt.debug, "Error exit\n");
}
strncpy(image_hdr->magic, IMAGE_MAGIC, IMAGE_MAGIC_SIZE);
strncpy(image_hdr->fs, raw_MAGIC, FS_MAGIC_SIZE);
image_hdr->block_size = PART_SECTOR_SIZE;
image_hdr->device_size = get_partition_size(&src);
image_hdr->totalblock = image_hdr->device_size / PART_SECTOR_SIZE;
image_hdr->usedblocks = image_hdr->device_size / PART_SECTOR_SIZE;
close(src);
}
/*
* This function print the results of the command "btrfs fi usage"
* in tabular format
*/
static void _cmd_filesystem_usage_tabular(unsigned unit_mode,
struct btrfs_ioctl_space_args *sargs,
struct chunk_info *chunks_info_ptr,
int chunks_info_count,
struct device_info *device_info_ptr,
int device_info_count)
{
int i;
u64 total_unused = 0;
struct string_table *matrix = 0;
int ncols, nrows;
ncols = sargs->total_spaces + 2;
nrows = 2 + 1 + device_info_count + 1 + 2;
matrix = table_create(ncols, nrows);
if (!matrix) {
fprintf(stderr, "ERROR: not enough memory\n");
return;
}
/* header */
for (i = 0; i < sargs->total_spaces; i++) {
const char *description;
u64 flags = sargs->spaces[i].flags;
if (flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
continue;
description = btrfs_group_type_str(flags);
table_printf(matrix, 1+i, 0, "<%s", description);
}
for (i = 0; i < sargs->total_spaces; i++) {
const char *r_mode;
u64 flags = sargs->spaces[i].flags;
r_mode = btrfs_group_profile_str(flags);
table_printf(matrix, 1+i, 1, "<%s", r_mode);
}
table_printf(matrix, 1+sargs->total_spaces, 1, "<Unallocated");
/* body */
for (i = 0; i < device_info_count; i++) {
int k, col;
char *p;
u64 total_allocated = 0, unused;
p = strrchr(device_info_ptr[i].path, '/');
if (!p)
p = device_info_ptr[i].path;
else
p++;
table_printf(matrix, 0, i + 3, "<%s", device_info_ptr[i].path);
for (col = 1, k = 0 ; k < sargs->total_spaces ; k++) {
u64 flags = sargs->spaces[k].flags;
u64 devid = device_info_ptr[i].devid;
int j;
u64 size = 0;
for (j = 0 ; j < chunks_info_count ; j++) {
if (chunks_info_ptr[j].type != flags )
continue;
if (chunks_info_ptr[j].devid != devid)
continue;
size += calc_chunk_size(chunks_info_ptr+j);
}
if (size)
table_printf(matrix, col, i+3,
">%s", pretty_size_mode(size, unit_mode));
else
table_printf(matrix, col, i+3, ">-");
total_allocated += size;
col++;
}
unused = get_partition_size(device_info_ptr[i].path)
- total_allocated;
table_printf(matrix, sargs->total_spaces + 1, i + 3,
">%s", pretty_size_mode(unused, unit_mode));
total_unused += unused;
}
for (i = 0; i <= sargs->total_spaces; i++)
table_printf(matrix, i + 1, device_info_count + 3, "=");
/* footer */
table_printf(matrix, 0, device_info_count + 4, "<Total");
for (i = 0; i < sargs->total_spaces; i++)
table_printf(matrix, 1 + i, device_info_count + 4, ">%s",
pretty_size_mode(sargs->spaces[i].total_bytes, unit_mode));
table_printf(matrix, sargs->total_spaces + 1, device_info_count + 4,
">%s", pretty_size_mode(total_unused, unit_mode));
table_printf(matrix, 0, device_info_count + 5, "<Used");
for (i = 0; i < sargs->total_spaces; i++)
table_printf(matrix, 1 + i, device_info_count+5, ">%s",
pretty_size_mode(sargs->spaces[i].used_bytes, unit_mode));
table_dump(matrix);
table_free(matrix);
}
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;
}
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;
}
static int dev_replace_handle_sigint(int fd)
{
struct sigaction sa = {
.sa_handler = fd == -1 ? SIG_DFL : dev_replace_sigint_handler
};
dev_replace_cancel_fd = fd;
return sigaction(SIGINT, &sa, NULL);
}
static const char *const cmd_replace_start_usage[] = {
"btrfs replace start [-Bfr] <srcdev>|<devid> <targetdev> <mount_point>",
"Replace device of a btrfs filesystem.",
"On a live filesystem, duplicate the data to the target device which",
"is currently stored on the source device. If the source device is not",
"available anymore, or if the -r option is set, the data is built",
"only using the RAID redundancy mechanisms. After completion of the",
"operation, the source device is removed from the filesystem.",
"If the <srcdev> is a numerical value, it is assumed to be the device id",
"of the filesystem which is mounted at <mount_point>, otherwise it is",
"the path to the source device. If the source device is disconnected,",
"from the system, you have to use the <devid> parameter format.",
"The <targetdev> needs to be same size or larger than the <srcdev>.",
"",
"-r only read from <srcdev> if no other zero-defect mirror exists",
" (enable this if your drive has lots of read errors, the access",
" would be very slow)",
"-f force using and overwriting <targetdev> even if it looks like",
" containing a valid btrfs filesystem. A valid filesystem is",
" assumed if a btrfs superblock is found which contains a",
" correct checksum. Devices which are currently mounted are",
" never allowed to be used as the <targetdev>",
"-B do not background",
NULL
};
static int cmd_replace_start(int argc, char **argv)
{
struct btrfs_ioctl_dev_replace_args start_args = {0};
struct btrfs_ioctl_dev_replace_args status_args = {0};
int ret;
int i;
int c;
int fdmnt = -1;
int fddstdev = -1;
char *path;
char *srcdev;
char *dstdev = NULL;
int avoid_reading_from_srcdev = 0;
int force_using_targetdev = 0;
u64 dstdev_block_count;
int do_not_background = 0;
DIR *dirstream = NULL;
u64 srcdev_size;
u64 dstdev_size;
while ((c = getopt(argc, argv, "Brf")) != -1) {
switch (c) {
case 'B':
do_not_background = 1;
break;
case 'r':
avoid_reading_from_srcdev = 1;
break;
case 'f':
force_using_targetdev = 1;
break;
case '?':
default:
usage(cmd_replace_start_usage);
}
}
start_args.start.cont_reading_from_srcdev_mode =
avoid_reading_from_srcdev ?
BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID :
BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS;
if (check_argc_exact(argc - optind, 3))
usage(cmd_replace_start_usage);
path = argv[optind + 2];
fdmnt = open_path_or_dev_mnt(path, &dirstream, 1);
if (fdmnt < 0)
goto leave_with_error;
/* check for possible errors before backgrounding */
status_args.cmd = BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS;
status_args.result = BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT;
ret = ioctl(fdmnt, BTRFS_IOC_DEV_REPLACE, &status_args);
if (ret < 0) {
fprintf(stderr,
"ERROR: ioctl(DEV_REPLACE_STATUS) failed on \"%s\": %s",
path, strerror(errno));
if (status_args.result != BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT)
fprintf(stderr, ", %s\n",
replace_dev_result2string(status_args.result));
else
fprintf(stderr, "\n");
goto leave_with_error;
}
if (status_args.result != BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR) {
error("ioctl(DEV_REPLACE_STATUS) on '%s' returns error: %s",
path, replace_dev_result2string(status_args.result));
goto leave_with_error;
}
if (status_args.status.replace_state ==
BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED) {
error("device replace on '%s' already started", path);
goto leave_with_error;
}
srcdev = argv[optind];
dstdev = canonicalize_path(argv[optind + 1]);
if (!dstdev) {
error("cannot canonicalize path '%s': %s",
argv[optind + 1], strerror(errno));
goto leave_with_error;
}
if (string_is_numerical(srcdev)) {
struct btrfs_ioctl_fs_info_args fi_args;
struct btrfs_ioctl_dev_info_args *di_args = NULL;
start_args.start.srcdevid = arg_strtou64(srcdev);
ret = get_fs_info(path, &fi_args, &di_args);
if (ret) {
error("failed to get device info: %s", strerror(-ret));
free(di_args);
goto leave_with_error;
}
if (!fi_args.num_devices) {
error("no devices found");
free(di_args);
goto leave_with_error;
}
for (i = 0; i < fi_args.num_devices; i++)
if (start_args.start.srcdevid == di_args[i].devid)
break;
srcdev_size = di_args[i].total_bytes;
free(di_args);
if (i == fi_args.num_devices) {
error("'%s' is not a valid devid for filesystem '%s'",
srcdev, path);
goto leave_with_error;
}
} else if (is_block_device(srcdev) > 0) {
strncpy((char *)start_args.start.srcdev_name, srcdev,
BTRFS_DEVICE_PATH_NAME_MAX);
start_args.start.srcdevid = 0;
srcdev_size = get_partition_size(srcdev);
} else {
error("source device must be a block device or a devid");
goto leave_with_error;
}
ret = test_dev_for_mkfs(dstdev, force_using_targetdev);
if (ret)
goto leave_with_error;
dstdev_size = get_partition_size(dstdev);
if (srcdev_size > dstdev_size) {
error("target device smaller than source device (required %llu bytes)",
srcdev_size);
goto leave_with_error;
}
fddstdev = open(dstdev, O_RDWR);
if (fddstdev < 0) {
error("unable to open %s: %s", dstdev, strerror(errno));
goto leave_with_error;
}
strncpy((char *)start_args.start.tgtdev_name, dstdev,
BTRFS_DEVICE_PATH_NAME_MAX);
ret = btrfs_prepare_device(fddstdev, dstdev, &dstdev_block_count, 0,
PREP_DEVICE_ZERO_END | PREP_DEVICE_VERBOSE);
if (ret)
goto leave_with_error;
close(fddstdev);
fddstdev = -1;
free(dstdev);
dstdev = NULL;
dev_replace_handle_sigint(fdmnt);
if (!do_not_background) {
if (daemon(0, 0) < 0) {
error("backgrounding failed: %s", strerror(errno));
goto leave_with_error;
}
}
start_args.cmd = BTRFS_IOCTL_DEV_REPLACE_CMD_START;
start_args.result = BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT;
ret = ioctl(fdmnt, BTRFS_IOC_DEV_REPLACE, &start_args);
if (do_not_background) {
if (ret < 0) {
fprintf(stderr,
"ERROR: ioctl(DEV_REPLACE_START) failed on \"%s\": %s",
path, strerror(errno));
if (start_args.result != BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_RESULT)
fprintf(stderr, ", %s\n",
replace_dev_result2string(start_args.result));
else
fprintf(stderr, "\n");
if (errno == EOPNOTSUPP)
warning("device replace of RAID5/6 not supported with this kernel");
goto leave_with_error;
}
if (start_args.result !=
BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR) {
error("ioctl(DEV_REPLACE_START) on '%s' returns error: %s",
path,
replace_dev_result2string(start_args.result));
goto leave_with_error;
}
}
close_file_or_dir(fdmnt, dirstream);
return 0;
leave_with_error:
if (dstdev)
free(dstdev);
if (fdmnt != -1)
close(fdmnt);
if (fddstdev != -1)
close(fddstdev);
return 1;
}
static const char *const cmd_replace_status_usage[] = {
"btrfs replace status [-1] <mount_point>",
"Print status and progress information of a running device replace",
"operation",
"",
"-1 print once instead of print continuously until the replace",
" operation finishes (or is canceled)",
NULL
};
static int cmd_replace_status(int argc, char **argv)
{
int fd;
int c;
char *path;
int once = 0;
int ret;
DIR *dirstream = NULL;
while ((c = getopt(argc, argv, "1")) != -1) {
switch (c) {
case '1':
once = 1;
break;
case '?':
default:
usage(cmd_replace_status_usage);
}
}
if (check_argc_exact(argc - optind, 1))
usage(cmd_replace_status_usage);
path = argv[optind];
fd = btrfs_open_dir(path, &dirstream, 1);
if (fd < 0)
return 1;
ret = print_replace_status(fd, path, once);
close_file_or_dir(fd, dirstream);
return !!ret;
}
/*
* This function print the results of the command "btrfs fi usage"
* in tabular format
*/
static void _cmd_filesystem_usage_tabular(unsigned unit_mode,
struct btrfs_ioctl_space_args *sargs,
struct chunk_info *chunks_info_ptr,
int chunks_info_count,
struct device_info *device_info_ptr,
int device_info_count)
{
int i;
u64 total_unused = 0;
struct string_table *matrix = NULL;
int ncols, nrows;
int col;
int unallocated_col;
int spaceinfos_col;
const int vhdr_skip = 3; /* amount of vertical header space */
/* id, path, unallocated */
ncols = 3;
spaceinfos_col = 2;
/* Properly count the real space infos */
for (i = 0; i < sargs->total_spaces; i++) {
if (sargs->spaces[i].flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
continue;
ncols++;
}
/* 2 for header, empty line, devices, ===, total, used */
nrows = vhdr_skip + device_info_count + 1 + 2;
matrix = table_create(ncols, nrows);
if (!matrix) {
error("not enough memory");
return;
}
/*
* We have to skip the global block reserve everywhere as it's an
* artificial blockgroup
*/
/* header */
for (i = 0, col = spaceinfos_col; i < sargs->total_spaces; i++) {
u64 flags = sargs->spaces[i].flags;
if (flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
continue;
table_printf(matrix, col, 0, "<%s",
btrfs_group_type_str(flags));
table_printf(matrix, col, 1, "<%s",
btrfs_group_profile_str(flags));
col++;
}
unallocated_col = col;
table_printf(matrix, 0, 1, "<Id");
table_printf(matrix, 1, 1, "<Path");
table_printf(matrix, unallocated_col, 1, "<Unallocated");
/* body */
for (i = 0; i < device_info_count; i++) {
int k;
char *p;
u64 total_allocated = 0, unused;
p = strrchr(device_info_ptr[i].path, '/');
if (!p)
p = device_info_ptr[i].path;
else
p++;
table_printf(matrix, 0, vhdr_skip + i, ">%llu",
device_info_ptr[i].devid);
table_printf(matrix, 1, vhdr_skip + i, "<%s",
device_info_ptr[i].path);
for (col = spaceinfos_col, k = 0; k < sargs->total_spaces; k++) {
u64 flags = sargs->spaces[k].flags;
u64 devid = device_info_ptr[i].devid;
int j;
u64 size = 0;
if (flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
continue;
for (j = 0 ; j < chunks_info_count ; j++) {
if (chunks_info_ptr[j].type != flags )
continue;
if (chunks_info_ptr[j].devid != devid)
continue;
size += calc_chunk_size(chunks_info_ptr+j);
}
if (size)
table_printf(matrix, col, vhdr_skip+ i,
">%s", pretty_size_mode(size, unit_mode));
else
table_printf(matrix, col, vhdr_skip + i, ">-");
total_allocated += size;
col++;
}
unused = get_partition_size(device_info_ptr[i].path)
- total_allocated;
table_printf(matrix, unallocated_col, vhdr_skip + i,
">%s", pretty_size_mode(unused, unit_mode));
total_unused += unused;
}
for (i = 0; i < spaceinfos_col; i++) {
table_printf(matrix, i, vhdr_skip - 1, "*-");
table_printf(matrix, i, vhdr_skip + device_info_count, "*-");
}
for (i = 0, col = spaceinfos_col; i < sargs->total_spaces; i++) {
if (sargs->spaces[i].flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
continue;
table_printf(matrix, col, vhdr_skip - 1, "*-");
table_printf(matrix, col, vhdr_skip + device_info_count, "*-");
col++;
}
/* One for Unallocated */
table_printf(matrix, col, vhdr_skip - 1, "*-");
table_printf(matrix, col, vhdr_skip + device_info_count, "*-");
/* footer */
table_printf(matrix, 1, vhdr_skip + device_info_count + 1, "<Total");
for (i = 0, col = spaceinfos_col; i < sargs->total_spaces; i++) {
if (sargs->spaces[i].flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
continue;
table_printf(matrix, col++, vhdr_skip + device_info_count + 1,
">%s",
pretty_size_mode(sargs->spaces[i].total_bytes, unit_mode));
}
table_printf(matrix, unallocated_col, vhdr_skip + device_info_count + 1,
">%s", pretty_size_mode(total_unused, unit_mode));
table_printf(matrix, 1, vhdr_skip + device_info_count + 2, "<Used");
for (i = 0, col = spaceinfos_col; i < sargs->total_spaces; i++) {
if (sargs->spaces[i].flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
continue;
table_printf(matrix, col++, vhdr_skip + device_info_count + 2,
">%s",
pretty_size_mode(sargs->spaces[i].used_bytes, unit_mode));
}
table_dump(matrix);
table_free(matrix);
}
int
build_platform_ioctl(int fd, unsigned long op, ...)
{
status_t error = FS_BAD_VALUE;
va_list list;
// count arguments
va_start(list, op);
switch (op) {
case 7: // B_GET_GEOMETRY
{
#ifdef ANTARES_HOST_PLATFORM_LINUX
{
device_geometry *geometry = va_arg(list, device_geometry*);
struct hd_geometry hdGeometry;
// BLKGETSIZE and BLKGETSIZE64 don't seem to work for
// partitions. So we get the device geometry (there only seems
// to be HDIO_GETGEO, which is kind of obsolete, BTW), and
// get the partition size via binary search.
if (ioctl(fd, HDIO_GETGEO, &hdGeometry) == 0) {
off_t bytesPerCylinder = (off_t)hdGeometry.heads
* hdGeometry.sectors * 512;
off_t deviceSize = bytesPerCylinder * hdGeometry.cylinders;
off_t partitionSize = get_partition_size(fd, deviceSize);
geometry->head_count = hdGeometry.heads;
geometry->cylinder_count = partitionSize / bytesPerCylinder;
geometry->sectors_per_track = hdGeometry.sectors;
// TODO: Get the real values...
geometry->bytes_per_sector = 512;
geometry->device_type = B_DISK;
geometry->removable = false;
geometry->read_only = false;
geometry->write_once = false;
error = FS_OK;
} else
error = from_platform_error(errno);
}
#endif // ANTARES_HOST_PLATFORM_LINUX
break;
}
case 20: // B_FLUSH_DRIVE_CACHE
error = FS_OK;
break;
case 10000: // IOCTL_FILE_UNCACHED_IO
error = FS_OK;
break;
}
va_end(list);
if (error != FS_OK) {
errno = error;
return -1;
}
return 0;
}
