void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
{
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
int i;
char chunk_flags_str[32] = {0};
bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str);
printf("\t\tlength %llu owner %llu stripe_len %llu type %s\n",
(unsigned long long)btrfs_chunk_length(eb, chunk),
(unsigned long long)btrfs_chunk_owner(eb, chunk),
(unsigned long long)btrfs_chunk_stripe_len(eb, chunk),
chunk_flags_str);
printf("\t\tio_align %u io_width %u sector_size %u\n",
btrfs_chunk_io_align(eb, chunk),
btrfs_chunk_io_width(eb, chunk),
btrfs_chunk_sector_size(eb, chunk));
printf("\t\tnum_stripes %hu sub_stripes %hu\n", num_stripes,
btrfs_chunk_sub_stripes(eb, chunk));
for (i = 0 ; i < num_stripes ; i++) {
unsigned char dev_uuid[BTRFS_UUID_SIZE];
char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
read_extent_buffer(eb, dev_uuid,
(unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i),
BTRFS_UUID_SIZE);
uuid_unparse(dev_uuid, str_dev_uuid);
printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
(unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
(unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
printf("\t\t\tdev_uuid %s\n", str_dev_uuid);
}
}
static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
{
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
int i;
pr_info("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
btrfs_chunk_length(eb, chunk), btrfs_chunk_owner(eb, chunk),
btrfs_chunk_type(eb, chunk), num_stripes);
for (i = 0 ; i < num_stripes ; i++) {
pr_info("\t\t\tstripe %d devid %llu offset %llu\n", i,
btrfs_stripe_devid_nr(eb, chunk, i),
btrfs_stripe_offset_nr(eb, chunk, i));
}
}
static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
{
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
int i;
printk(KERN_INFO "\t\tchunk length %llu owner %llu type %llu "
"num_stripes %d\n",
(unsigned long long)btrfs_chunk_length(eb, chunk),
(unsigned long long)btrfs_chunk_owner(eb, chunk),
(unsigned long long)btrfs_chunk_type(eb, chunk),
num_stripes);
for (i = 0 ; i < num_stripes ; i++) {
printk(KERN_INFO "\t\t\tstripe %d devid %llu offset %llu\n", i,
(unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
(unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
}
}
void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
{
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
int i;
char chunk_flags_str[32] = {0};
bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str);
printf("\t\tchunk length %llu owner %llu type %s num_stripes %d\n",
(unsigned long long)btrfs_chunk_length(eb, chunk),
(unsigned long long)btrfs_chunk_owner(eb, chunk),
chunk_flags_str, num_stripes);
for (i = 0 ; i < num_stripes ; i++) {
printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
(unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
(unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
}
}
static void print_sys_chunk_array(struct btrfs_super_block *sb)
{
struct extent_buffer *buf;
struct btrfs_disk_key *disk_key;
struct btrfs_chunk *chunk;
u8 *array_ptr;
unsigned long sb_array_offset;
u32 num_stripes;
u32 array_size;
u32 len = 0;
u32 cur_offset;
struct btrfs_key key;
int item;
buf = malloc(sizeof(*buf) + sizeof(*sb));
if (!buf) {
fprintf(stderr, "%s\n", strerror(ENOMEM));
exit(1);
}
write_extent_buffer(buf, sb, 0, sizeof(*sb));
array_size = btrfs_super_sys_array_size(sb);
array_ptr = sb->sys_chunk_array;
sb_array_offset = offsetof(struct btrfs_super_block, sys_chunk_array);
cur_offset = 0;
item = 0;
while (cur_offset < array_size) {
disk_key = (struct btrfs_disk_key *)array_ptr;
len = sizeof(*disk_key);
if (cur_offset + len > array_size)
goto out_short_read;
btrfs_disk_key_to_cpu(&key, disk_key);
array_ptr += len;
sb_array_offset += len;
cur_offset += len;
printf("\titem %d ", item);
btrfs_print_key(disk_key);
putchar('\n');
if (key.type == BTRFS_CHUNK_ITEM_KEY) {
chunk = (struct btrfs_chunk *)sb_array_offset;
/*
* At least one btrfs_chunk with one stripe must be
* present, exact stripe count check comes afterwards
*/
len = btrfs_chunk_item_size(1);
if (cur_offset + len > array_size)
goto out_short_read;
print_chunk(buf, chunk);
num_stripes = btrfs_chunk_num_stripes(buf, chunk);
if (!num_stripes) {
printk(
"ERROR: invalid number of stripes %u in sys_array at offset %u\n",
num_stripes, cur_offset);
break;
}
len = btrfs_chunk_item_size(num_stripes);
if (cur_offset + len > array_size)
goto out_short_read;
} else {
printk(
"ERROR: unexpected item type %u in sys_array at offset %u\n",
(u32)key.type, cur_offset);
break;
}
array_ptr += len;
sb_array_offset += len;
cur_offset += len;
item++;
}
free(buf);
return;
out_short_read:
printk("ERROR: sys_array too short to read %u bytes at offset %u\n",
len, cur_offset);
free(buf);
}
static void print_sys_chunk_array(struct btrfs_super_block *sb)
{
struct extent_buffer *buf;
struct btrfs_disk_key *disk_key;
struct btrfs_chunk *chunk;
u8 *array_ptr;
unsigned long sb_array_offset;
u32 num_stripes;
u32 array_size;
u32 len = 0;
u32 cur_offset;
struct btrfs_key key;
int item;
buf = malloc(sizeof(*buf) + sizeof(*sb));
if (!buf) {
error("not enough memory");
return;
}
write_extent_buffer(buf, sb, 0, sizeof(*sb));
buf->len = sizeof(*sb);
array_size = btrfs_super_sys_array_size(sb);
array_ptr = sb->sys_chunk_array;
sb_array_offset = offsetof(struct btrfs_super_block, sys_chunk_array);
if (array_size > BTRFS_SYSTEM_CHUNK_ARRAY_SIZE) {
error("sys_array_size %u shouldn't exceed %u bytes",
array_size, BTRFS_SYSTEM_CHUNK_ARRAY_SIZE);
goto out;
}
cur_offset = 0;
item = 0;
while (cur_offset < array_size) {
disk_key = (struct btrfs_disk_key *)array_ptr;
len = sizeof(*disk_key);
if (cur_offset + len > array_size)
goto out_short_read;
btrfs_disk_key_to_cpu(&key, disk_key);
array_ptr += len;
sb_array_offset += len;
cur_offset += len;
printf("\titem %d ", item);
btrfs_print_key(disk_key);
putchar('\n');
if (key.type == BTRFS_CHUNK_ITEM_KEY) {
chunk = (struct btrfs_chunk *)sb_array_offset;
/*
* At least one btrfs_chunk with one stripe must be
* present, exact stripe count check comes afterwards
*/
len = btrfs_chunk_item_size(1);
if (cur_offset + len > array_size)
goto out_short_read;
num_stripes = btrfs_chunk_num_stripes(buf, chunk);
if (!num_stripes) {
error(
"invalid number of stripes %u in sys_array at offset %u",
num_stripes, cur_offset);
break;
}
len = btrfs_chunk_item_size(num_stripes);
if (cur_offset + len > array_size)
goto out_short_read;
print_chunk_item(buf, chunk);
} else {
error("unexpected item type %u in sys_array at offset %u",
(u32)key.type, cur_offset);
break;
}
array_ptr += len;
sb_array_offset += len;
cur_offset += len;
item++;
}
out:
free(buf);
return;
out_short_read:
error("sys_array too short to read %u bytes at offset %u",
len, cur_offset);
free(buf);
}
