dump_superblock() is useful to debug btrfs-image error, like fsck/012-*
test case, where the superblock itself has something wrong from the
original image.
Export it so that we can call it in gdb.
Since we're exporting dump_superblock(), rename it to
btrfs_print_superblock() to following the existing naming schema.
Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
cmds/inspect-dump-super.c | 454 +-------------------------------------
print-tree.c | 447 +++++++++++++++++++++++++++++++++++++
print-tree.h | 1 +
3 files changed, 449 insertions(+), 453 deletions(-)
diff --git a/cmds/inspect-dump-super.c b/cmds/inspect-dump-super.c
index f22633b99390..729af84cc93d 100644
--- a/cmds/inspect-dump-super.c
+++ b/cmds/inspect-dump-super.c
@@ -16,471 +16,19 @@
#include "kerncompat.h"
#include <stdio.h>
-#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
-#include <ctype.h>
-#include <uuid/uuid.h>
#include <errno.h>
#include <getopt.h>
#include "ctree.h"
#include "disk-io.h"
#include "print-tree.h"
-#include "transaction.h"
-#include "kernel-lib/list.h"
#include "common/utils.h"
#include "cmds/commands.h"
-#include "crypto/crc32c.h"
#include "common/help.h"
-static int check_csum_sblock(void *sb, int csum_size, u16 csum_type)
-{
- u8 result[BTRFS_CSUM_SIZE];
-
- btrfs_csum_data(csum_type, (u8 *)sb + BTRFS_CSUM_SIZE,
- result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
-
- return !memcmp(sb, result, csum_size);
-}
-
-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);
-}
-
-static int empty_backup(struct btrfs_root_backup *backup)
-{
- if (backup == NULL ||
- (backup->tree_root == 0 &&
- backup->tree_root_gen == 0))
- return 1;
- return 0;
-}
-
-static void print_root_backup(struct btrfs_root_backup *backup)
-{
- printf("\t\tbackup_tree_root:\t%llu\tgen: %llu\tlevel: %d\n",
- btrfs_backup_tree_root(backup),
- btrfs_backup_tree_root_gen(backup),
- btrfs_backup_tree_root_level(backup));
- printf("\t\tbackup_chunk_root:\t%llu\tgen: %llu\tlevel: %d\n",
- btrfs_backup_chunk_root(backup),
- btrfs_backup_chunk_root_gen(backup),
- btrfs_backup_chunk_root_level(backup));
- printf("\t\tbackup_extent_root:\t%llu\tgen: %llu\tlevel: %d\n",
- btrfs_backup_extent_root(backup),
- btrfs_backup_extent_root_gen(backup),
- btrfs_backup_extent_root_level(backup));
- printf("\t\tbackup_fs_root:\t\t%llu\tgen: %llu\tlevel: %d\n",
- btrfs_backup_fs_root(backup),
- btrfs_backup_fs_root_gen(backup),
- btrfs_backup_fs_root_level(backup));
- printf("\t\tbackup_dev_root:\t%llu\tgen: %llu\tlevel: %d\n",
- btrfs_backup_dev_root(backup),
- btrfs_backup_dev_root_gen(backup),
- btrfs_backup_dev_root_level(backup));
- printf("\t\tbackup_csum_root:\t%llu\tgen: %llu\tlevel: %d\n",
- btrfs_backup_csum_root(backup),
- btrfs_backup_csum_root_gen(backup),
- btrfs_backup_csum_root_level(backup));
-
- printf("\t\tbackup_total_bytes:\t%llu\n",
- btrfs_backup_total_bytes(backup));
- printf("\t\tbackup_bytes_used:\t%llu\n",
- btrfs_backup_bytes_used(backup));
- printf("\t\tbackup_num_devices:\t%llu\n",
- btrfs_backup_num_devices(backup));
- putchar('\n');
-}
-
-static void print_backup_roots(struct btrfs_super_block *sb)
-{
- struct btrfs_root_backup *backup;
- int i;
-
- for (i = 0; i < BTRFS_NUM_BACKUP_ROOTS; i++) {
- backup = sb->super_roots + i;
- if (!empty_backup(backup)) {
- printf("\tbackup %d:\n", i);
- print_root_backup(backup);
- }
- }
-}
-
-struct readable_flag_entry {
- u64 bit;
- char *output;
-};
-
-#define DEF_COMPAT_RO_FLAG_ENTRY(bit_name) \
- {BTRFS_FEATURE_COMPAT_RO_##bit_name, #bit_name}
-
-static struct readable_flag_entry compat_ro_flags_array[] = {
- DEF_COMPAT_RO_FLAG_ENTRY(FREE_SPACE_TREE),
- DEF_COMPAT_RO_FLAG_ENTRY(FREE_SPACE_TREE_VALID),
-};
-static const int compat_ro_flags_num = sizeof(compat_ro_flags_array) /
- sizeof(struct readable_flag_entry);
-
-#define DEF_INCOMPAT_FLAG_ENTRY(bit_name) \
- {BTRFS_FEATURE_INCOMPAT_##bit_name, #bit_name}
-
-static struct readable_flag_entry incompat_flags_array[] = {
- DEF_INCOMPAT_FLAG_ENTRY(MIXED_BACKREF),
- DEF_INCOMPAT_FLAG_ENTRY(DEFAULT_SUBVOL),
- DEF_INCOMPAT_FLAG_ENTRY(MIXED_GROUPS),
- DEF_INCOMPAT_FLAG_ENTRY(COMPRESS_LZO),
- DEF_INCOMPAT_FLAG_ENTRY(COMPRESS_ZSTD),
- DEF_INCOMPAT_FLAG_ENTRY(BIG_METADATA),
- DEF_INCOMPAT_FLAG_ENTRY(EXTENDED_IREF),
- DEF_INCOMPAT_FLAG_ENTRY(RAID56),
- DEF_INCOMPAT_FLAG_ENTRY(SKINNY_METADATA),
- DEF_INCOMPAT_FLAG_ENTRY(NO_HOLES),
- DEF_INCOMPAT_FLAG_ENTRY(METADATA_UUID),
- DEF_INCOMPAT_FLAG_ENTRY(RAID1C34),
-};
-static const int incompat_flags_num = sizeof(incompat_flags_array) /
- sizeof(struct readable_flag_entry);
-
-#define DEF_HEADER_FLAG_ENTRY(bit_name) \
- {BTRFS_HEADER_FLAG_##bit_name, #bit_name}
-#define DEF_SUPER_FLAG_ENTRY(bit_name) \
- {BTRFS_SUPER_FLAG_##bit_name, #bit_name}
-
-static struct readable_flag_entry super_flags_array[] = {
- DEF_HEADER_FLAG_ENTRY(WRITTEN),
- DEF_HEADER_FLAG_ENTRY(RELOC),
- DEF_SUPER_FLAG_ENTRY(CHANGING_FSID),
- DEF_SUPER_FLAG_ENTRY(SEEDING),
- DEF_SUPER_FLAG_ENTRY(METADUMP),
- DEF_SUPER_FLAG_ENTRY(METADUMP_V2)
-};
-static const int super_flags_num = ARRAY_SIZE(super_flags_array);
-
-#define BTRFS_SUPER_FLAG_SUPP (BTRFS_HEADER_FLAG_WRITTEN |\
- BTRFS_HEADER_FLAG_RELOC |\
- BTRFS_SUPER_FLAG_CHANGING_FSID |\
- BTRFS_SUPER_FLAG_SEEDING |\
- BTRFS_SUPER_FLAG_METADUMP |\
- BTRFS_SUPER_FLAG_METADUMP_V2)
-
-static void __print_readable_flag(u64 flag, struct readable_flag_entry *array,
- int array_size, u64 supported_flags)
-{
- int i;
- int first = 1;
- struct readable_flag_entry *entry;
-
- if (!flag)
- return;
-
- printf("\t\t\t( ");
- for (i = 0; i < array_size; i++) {
- entry = array + i;
- if (flag & entry->bit) {
- if (first)
- printf("%s ", entry->output);
- else
- printf("|\n\t\t\t %s ", entry->output);
- first = 0;
- }
- }
- flag &= ~supported_flags;
- if (flag) {
- if (first)
- printf("unknown flag: 0x%llx ", flag);
- else
- printf("|\n\t\t\t unknown flag: 0x%llx ", flag);
- }
- printf(")\n");
-}
-
-static void print_readable_compat_ro_flag(u64 flag)
-{
- /*
- * We know about the FREE_SPACE_TREE{,_VALID} bits, but we don't
- * actually support them yet.
- */
- return __print_readable_flag(flag, compat_ro_flags_array,
- compat_ro_flags_num,
- BTRFS_FEATURE_COMPAT_RO_SUPP |
- BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE |
- BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID);
-}
-
-static void print_readable_incompat_flag(u64 flag)
-{
- return __print_readable_flag(flag, incompat_flags_array,
- incompat_flags_num,
- BTRFS_FEATURE_INCOMPAT_SUPP);
-}
-
-static void print_readable_super_flag(u64 flag)
-{
- return __print_readable_flag(flag, super_flags_array,
- super_flags_num, BTRFS_SUPER_FLAG_SUPP);
-}
-
-static bool is_valid_csum_type(u16 csum_type)
-{
- switch (csum_type) {
- case BTRFS_CSUM_TYPE_CRC32:
- case BTRFS_CSUM_TYPE_XXHASH:
- case BTRFS_CSUM_TYPE_SHA256:
- case BTRFS_CSUM_TYPE_BLAKE2:
- return true;
- default:
- return false;
- }
-}
-
-static void dump_superblock(struct btrfs_super_block *sb, int full)
-{
- int i;
- char *s, buf[BTRFS_UUID_UNPARSED_SIZE];
- u8 *p;
- u32 csum_size;
- u16 csum_type;
- bool metadata_uuid_present = (btrfs_super_incompat_flags(sb) &
- BTRFS_FEATURE_INCOMPAT_METADATA_UUID);
- int cmp_res = 0;
-
-
- csum_type = btrfs_super_csum_type(sb);
- csum_size = BTRFS_CSUM_SIZE;
- printf("csum_type\t\t%hu (", csum_type);
- if (!is_valid_csum_type(csum_type)) {
- printf("INVALID");
- } else {
- printf("%s", btrfs_super_csum_name(csum_type));
- csum_size = btrfs_super_csum_size(sb);
- }
- printf(")\n");
- printf("csum_size\t\t%llu\n", (unsigned long long)csum_size);
-
- printf("csum\t\t\t0x");
- for (i = 0, p = sb->csum; i < csum_size; i++)
- printf("%02x", p[i]);
- if (!is_valid_csum_type(csum_type))
- printf(" [UNKNOWN CSUM TYPE OR SIZE]");
- else if (check_csum_sblock(sb, csum_size, csum_type))
- printf(" [match]");
- else
- printf(" [DON'T MATCH]");
- putchar('\n');
-
- printf("bytenr\t\t\t%llu\n",
- (unsigned long long)btrfs_super_bytenr(sb));
- printf("flags\t\t\t0x%llx\n",
- (unsigned long long)btrfs_super_flags(sb));
- print_readable_super_flag(btrfs_super_flags(sb));
-
- printf("magic\t\t\t");
- s = (char *) &sb->magic;
- for (i = 0; i < 8; i++)
- putchar(isprint(s[i]) ? s[i] : '.');
- if (btrfs_super_magic(sb) == BTRFS_MAGIC)
- printf(" [match]\n");
- else
- printf(" [DON'T MATCH]\n");
-
- uuid_unparse(sb->fsid, buf);
- printf("fsid\t\t\t%s\n", buf);
- if (metadata_uuid_present) {
- uuid_unparse(sb->metadata_uuid, buf);
- printf("metadata_uuid\t\t%s\n", buf);
- } else {
- printf("metadata_uuid\t\t%s\n", buf);
- }
-
- printf("label\t\t\t");
- s = sb->label;
- for (i = 0; i < BTRFS_LABEL_SIZE && s[i]; i++)
- putchar(isprint(s[i]) ? s[i] : '.');
- putchar('\n');
-
- printf("generation\t\t%llu\n",
- (unsigned long long)btrfs_super_generation(sb));
- printf("root\t\t\t%llu\n", (unsigned long long)btrfs_super_root(sb));
- printf("sys_array_size\t\t%llu\n",
- (unsigned long long)btrfs_super_sys_array_size(sb));
- printf("chunk_root_generation\t%llu\n",
- (unsigned long long)btrfs_super_chunk_root_generation(sb));
- printf("root_level\t\t%llu\n",
- (unsigned long long)btrfs_super_root_level(sb));
- printf("chunk_root\t\t%llu\n",
- (unsigned long long)btrfs_super_chunk_root(sb));
- printf("chunk_root_level\t%llu\n",
- (unsigned long long)btrfs_super_chunk_root_level(sb));
- printf("log_root\t\t%llu\n",
- (unsigned long long)btrfs_super_log_root(sb));
- printf("log_root_transid\t%llu\n",
- (unsigned long long)btrfs_super_log_root_transid(sb));
- printf("log_root_level\t\t%llu\n",
- (unsigned long long)btrfs_super_log_root_level(sb));
- printf("total_bytes\t\t%llu\n",
- (unsigned long long)btrfs_super_total_bytes(sb));
- printf("bytes_used\t\t%llu\n",
- (unsigned long long)btrfs_super_bytes_used(sb));
- printf("sectorsize\t\t%llu\n",
- (unsigned long long)btrfs_super_sectorsize(sb));
- printf("nodesize\t\t%llu\n",
- (unsigned long long)btrfs_super_nodesize(sb));
- printf("leafsize (deprecated)\t%u\n",
- le32_to_cpu(sb->__unused_leafsize));
- printf("stripesize\t\t%llu\n",
- (unsigned long long)btrfs_super_stripesize(sb));
- printf("root_dir\t\t%llu\n",
- (unsigned long long)btrfs_super_root_dir(sb));
- printf("num_devices\t\t%llu\n",
- (unsigned long long)btrfs_super_num_devices(sb));
- printf("compat_flags\t\t0x%llx\n",
- (unsigned long long)btrfs_super_compat_flags(sb));
- printf("compat_ro_flags\t\t0x%llx\n",
- (unsigned long long)btrfs_super_compat_ro_flags(sb));
- print_readable_compat_ro_flag(btrfs_super_compat_ro_flags(sb));
- printf("incompat_flags\t\t0x%llx\n",
- (unsigned long long)btrfs_super_incompat_flags(sb));
- print_readable_incompat_flag(btrfs_super_incompat_flags(sb));
- printf("cache_generation\t%llu\n",
- (unsigned long long)btrfs_super_cache_generation(sb));
- printf("uuid_tree_generation\t%llu\n",
- (unsigned long long)btrfs_super_uuid_tree_generation(sb));
-
- uuid_unparse(sb->dev_item.uuid, buf);
- printf("dev_item.uuid\t\t%s\n", buf);
-
- uuid_unparse(sb->dev_item.fsid, buf);
- if (metadata_uuid_present) {
- cmp_res = !memcmp(sb->dev_item.fsid, sb->metadata_uuid,
- BTRFS_FSID_SIZE);
- } else {
- cmp_res = !memcmp(sb->dev_item.fsid, sb->fsid, BTRFS_FSID_SIZE);
- }
- printf("dev_item.fsid\t\t%s %s\n", buf,
- cmp_res ? "[match]" : "[DON'T MATCH]");
-
- printf("dev_item.type\t\t%llu\n", (unsigned long long)
- btrfs_stack_device_type(&sb->dev_item));
- printf("dev_item.total_bytes\t%llu\n", (unsigned long long)
- btrfs_stack_device_total_bytes(&sb->dev_item));
- printf("dev_item.bytes_used\t%llu\n", (unsigned long long)
- btrfs_stack_device_bytes_used(&sb->dev_item));
- printf("dev_item.io_align\t%u\n", (unsigned int)
- btrfs_stack_device_io_align(&sb->dev_item));
- printf("dev_item.io_width\t%u\n", (unsigned int)
- btrfs_stack_device_io_width(&sb->dev_item));
- printf("dev_item.sector_size\t%u\n", (unsigned int)
- btrfs_stack_device_sector_size(&sb->dev_item));
- printf("dev_item.devid\t\t%llu\n",
- btrfs_stack_device_id(&sb->dev_item));
- printf("dev_item.dev_group\t%u\n", (unsigned int)
- btrfs_stack_device_group(&sb->dev_item));
- printf("dev_item.seek_speed\t%u\n", (unsigned int)
- btrfs_stack_device_seek_speed(&sb->dev_item));
- printf("dev_item.bandwidth\t%u\n", (unsigned int)
- btrfs_stack_device_bandwidth(&sb->dev_item));
- printf("dev_item.generation\t%llu\n", (unsigned long long)
- btrfs_stack_device_generation(&sb->dev_item));
- if (full) {
- printf("sys_chunk_array[%d]:\n", BTRFS_SYSTEM_CHUNK_ARRAY_SIZE);
- print_sys_chunk_array(sb);
- printf("backup_roots[%d]:\n", BTRFS_NUM_BACKUP_ROOTS);
- print_backup_roots(sb);
- }
-}
-
static int load_and_dump_sb(char *filename, int fd, u64 sb_bytenr, int full,
int force)
{
@@ -507,7 +55,7 @@ static int load_and_dump_sb(char *filename, int fd, u64 sb_bytenr, int full,
error("bad magic on superblock on %s at %llu",
filename, (unsigned long long)sb_bytenr);
} else {
- dump_superblock(sb, full);
+ btrfs_print_superblock(sb, full);
}
return 0;
}
diff --git a/print-tree.c b/print-tree.c
index 38cf8d34ac2e..6fa3440b813c 100644
--- a/print-tree.c
+++ b/print-tree.c
@@ -19,6 +19,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <uuid/uuid.h>
+#include <ctype.h>
#include "kerncompat.h"
#include "kernel-lib/radix-tree.h"
#include "ctree.h"
@@ -1550,3 +1551,449 @@ void btrfs_print_tree(struct extent_buffer *eb, bool follow, int traverse)
bfs_print_children(eb);
return;
}
+
+static bool is_valid_csum_type(u16 csum_type)
+{
+ switch (csum_type) {
+ case BTRFS_CSUM_TYPE_CRC32:
+ case BTRFS_CSUM_TYPE_XXHASH:
+ case BTRFS_CSUM_TYPE_SHA256:
+ case BTRFS_CSUM_TYPE_BLAKE2:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int check_csum_sblock(void *sb, int csum_size, u16 csum_type)
+{
+ u8 result[BTRFS_CSUM_SIZE];
+
+ btrfs_csum_data(csum_type, (u8 *)sb + BTRFS_CSUM_SIZE,
+ result, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
+
+ return !memcmp(sb, result, csum_size);
+}
+
+struct readable_flag_entry {
+ u64 bit;
+ char *output;
+};
+
+#define DEF_COMPAT_RO_FLAG_ENTRY(bit_name) \
+ {BTRFS_FEATURE_COMPAT_RO_##bit_name, #bit_name}
+
+static struct readable_flag_entry compat_ro_flags_array[] = {
+ DEF_COMPAT_RO_FLAG_ENTRY(FREE_SPACE_TREE),
+ DEF_COMPAT_RO_FLAG_ENTRY(FREE_SPACE_TREE_VALID),
+};
+static const int compat_ro_flags_num = sizeof(compat_ro_flags_array) /
+ sizeof(struct readable_flag_entry);
+
+#define DEF_INCOMPAT_FLAG_ENTRY(bit_name) \
+ {BTRFS_FEATURE_INCOMPAT_##bit_name, #bit_name}
+
+static struct readable_flag_entry incompat_flags_array[] = {
+ DEF_INCOMPAT_FLAG_ENTRY(MIXED_BACKREF),
+ DEF_INCOMPAT_FLAG_ENTRY(DEFAULT_SUBVOL),
+ DEF_INCOMPAT_FLAG_ENTRY(MIXED_GROUPS),
+ DEF_INCOMPAT_FLAG_ENTRY(COMPRESS_LZO),
+ DEF_INCOMPAT_FLAG_ENTRY(COMPRESS_ZSTD),
+ DEF_INCOMPAT_FLAG_ENTRY(BIG_METADATA),
+ DEF_INCOMPAT_FLAG_ENTRY(EXTENDED_IREF),
+ DEF_INCOMPAT_FLAG_ENTRY(RAID56),
+ DEF_INCOMPAT_FLAG_ENTRY(SKINNY_METADATA),
+ DEF_INCOMPAT_FLAG_ENTRY(NO_HOLES),
+ DEF_INCOMPAT_FLAG_ENTRY(METADATA_UUID),
+ DEF_INCOMPAT_FLAG_ENTRY(RAID1C34),
+};
+static const int incompat_flags_num = sizeof(incompat_flags_array) /
+ sizeof(struct readable_flag_entry);
+
+#define DEF_HEADER_FLAG_ENTRY(bit_name) \
+ {BTRFS_HEADER_FLAG_##bit_name, #bit_name}
+#define DEF_SUPER_FLAG_ENTRY(bit_name) \
+ {BTRFS_SUPER_FLAG_##bit_name, #bit_name}
+
+static struct readable_flag_entry super_flags_array[] = {
+ DEF_HEADER_FLAG_ENTRY(WRITTEN),
+ DEF_HEADER_FLAG_ENTRY(RELOC),
+ DEF_SUPER_FLAG_ENTRY(CHANGING_FSID),
+ DEF_SUPER_FLAG_ENTRY(SEEDING),
+ DEF_SUPER_FLAG_ENTRY(METADUMP),
+ DEF_SUPER_FLAG_ENTRY(METADUMP_V2)
+};
+static const int super_flags_num = ARRAY_SIZE(super_flags_array);
+
+#define BTRFS_SUPER_FLAG_SUPP (BTRFS_HEADER_FLAG_WRITTEN |\
+ BTRFS_HEADER_FLAG_RELOC |\
+ BTRFS_SUPER_FLAG_CHANGING_FSID |\
+ BTRFS_SUPER_FLAG_SEEDING |\
+ BTRFS_SUPER_FLAG_METADUMP |\
+ BTRFS_SUPER_FLAG_METADUMP_V2)
+
+static void __print_readable_flag(u64 flag, struct readable_flag_entry *array,
+ int array_size, u64 supported_flags)
+{
+ int i;
+ int first = 1;
+ struct readable_flag_entry *entry;
+
+ if (!flag)
+ return;
+
+ printf("\t\t\t( ");
+ for (i = 0; i < array_size; i++) {
+ entry = array + i;
+ if (flag & entry->bit) {
+ if (first)
+ printf("%s ", entry->output);
+ else
+ printf("|\n\t\t\t %s ", entry->output);
+ first = 0;
+ }
+ }
+ flag &= ~supported_flags;
+ if (flag) {
+ if (first)
+ printf("unknown flag: 0x%llx ", flag);
+ else
+ printf("|\n\t\t\t unknown flag: 0x%llx ", flag);
+ }
+ printf(")\n");
+}
+
+static void print_readable_compat_ro_flag(u64 flag)
+{
+ /*
+ * We know about the FREE_SPACE_TREE{,_VALID} bits, but we don't
+ * actually support them yet.
+ */
+ return __print_readable_flag(flag, compat_ro_flags_array,
+ compat_ro_flags_num,
+ BTRFS_FEATURE_COMPAT_RO_SUPP |
+ BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE |
+ BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID);
+}
+
+static void print_readable_incompat_flag(u64 flag)
+{
+ return __print_readable_flag(flag, incompat_flags_array,
+ incompat_flags_num,
+ BTRFS_FEATURE_INCOMPAT_SUPP);
+}
+
+static void print_readable_super_flag(u64 flag)
+{
+ return __print_readable_flag(flag, super_flags_array,
+ super_flags_num, BTRFS_SUPER_FLAG_SUPP);
+}
+
+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);
+}
+
+static int empty_backup(struct btrfs_root_backup *backup)
+{
+ if (backup == NULL ||
+ (backup->tree_root == 0 &&
+ backup->tree_root_gen == 0))
+ return 1;
+ return 0;
+}
+
+static void print_root_backup(struct btrfs_root_backup *backup)
+{
+ printf("\t\tbackup_tree_root:\t%llu\tgen: %llu\tlevel: %d\n",
+ btrfs_backup_tree_root(backup),
+ btrfs_backup_tree_root_gen(backup),
+ btrfs_backup_tree_root_level(backup));
+ printf("\t\tbackup_chunk_root:\t%llu\tgen: %llu\tlevel: %d\n",
+ btrfs_backup_chunk_root(backup),
+ btrfs_backup_chunk_root_gen(backup),
+ btrfs_backup_chunk_root_level(backup));
+ printf("\t\tbackup_extent_root:\t%llu\tgen: %llu\tlevel: %d\n",
+ btrfs_backup_extent_root(backup),
+ btrfs_backup_extent_root_gen(backup),
+ btrfs_backup_extent_root_level(backup));
+ printf("\t\tbackup_fs_root:\t\t%llu\tgen: %llu\tlevel: %d\n",
+ btrfs_backup_fs_root(backup),
+ btrfs_backup_fs_root_gen(backup),
+ btrfs_backup_fs_root_level(backup));
+ printf("\t\tbackup_dev_root:\t%llu\tgen: %llu\tlevel: %d\n",
+ btrfs_backup_dev_root(backup),
+ btrfs_backup_dev_root_gen(backup),
+ btrfs_backup_dev_root_level(backup));
+ printf("\t\tbackup_csum_root:\t%llu\tgen: %llu\tlevel: %d\n",
+ btrfs_backup_csum_root(backup),
+ btrfs_backup_csum_root_gen(backup),
+ btrfs_backup_csum_root_level(backup));
+
+ printf("\t\tbackup_total_bytes:\t%llu\n",
+ btrfs_backup_total_bytes(backup));
+ printf("\t\tbackup_bytes_used:\t%llu\n",
+ btrfs_backup_bytes_used(backup));
+ printf("\t\tbackup_num_devices:\t%llu\n",
+ btrfs_backup_num_devices(backup));
+ putchar('\n');
+}
+
+static void print_backup_roots(struct btrfs_super_block *sb)
+{
+ struct btrfs_root_backup *backup;
+ int i;
+
+ for (i = 0; i < BTRFS_NUM_BACKUP_ROOTS; i++) {
+ backup = sb->super_roots + i;
+ if (!empty_backup(backup)) {
+ printf("\tbackup %d:\n", i);
+ print_root_backup(backup);
+ }
+ }
+}
+
+void btrfs_print_superblock(struct btrfs_super_block *sb, int full)
+{
+ int i;
+ char *s, buf[BTRFS_UUID_UNPARSED_SIZE];
+ u8 *p;
+ u32 csum_size;
+ u16 csum_type;
+ bool metadata_uuid_present = (btrfs_super_incompat_flags(sb) &
+ BTRFS_FEATURE_INCOMPAT_METADATA_UUID);
+ int cmp_res = 0;
+
+
+ csum_type = btrfs_super_csum_type(sb);
+ csum_size = BTRFS_CSUM_SIZE;
+ printf("csum_type\t\t%hu (", csum_type);
+ if (!is_valid_csum_type(csum_type)) {
+ printf("INVALID");
+ } else {
+ printf("%s", btrfs_super_csum_name(csum_type));
+ csum_size = btrfs_super_csum_size(sb);
+ }
+ printf(")\n");
+ printf("csum_size\t\t%llu\n", (unsigned long long)csum_size);
+
+ printf("csum\t\t\t0x");
+ for (i = 0, p = sb->csum; i < csum_size; i++)
+ printf("%02x", p[i]);
+ if (!is_valid_csum_type(csum_type))
+ printf(" [UNKNOWN CSUM TYPE OR SIZE]");
+ else if (check_csum_sblock(sb, csum_size, csum_type))
+ printf(" [match]");
+ else
+ printf(" [DON'T MATCH]");
+ putchar('\n');
+
+ printf("bytenr\t\t\t%llu\n",
+ (unsigned long long)btrfs_super_bytenr(sb));
+ printf("flags\t\t\t0x%llx\n",
+ (unsigned long long)btrfs_super_flags(sb));
+ print_readable_super_flag(btrfs_super_flags(sb));
+
+ printf("magic\t\t\t");
+ s = (char *) &sb->magic;
+ for (i = 0; i < 8; i++)
+ putchar(isprint(s[i]) ? s[i] : '.');
+ if (btrfs_super_magic(sb) == BTRFS_MAGIC)
+ printf(" [match]\n");
+ else
+ printf(" [DON'T MATCH]\n");
+
+ uuid_unparse(sb->fsid, buf);
+ printf("fsid\t\t\t%s\n", buf);
+ if (metadata_uuid_present) {
+ uuid_unparse(sb->metadata_uuid, buf);
+ printf("metadata_uuid\t\t%s\n", buf);
+ } else {
+ printf("metadata_uuid\t\t%s\n", buf);
+ }
+
+ printf("label\t\t\t");
+ s = sb->label;
+ for (i = 0; i < BTRFS_LABEL_SIZE && s[i]; i++)
+ putchar(isprint(s[i]) ? s[i] : '.');
+ putchar('\n');
+
+ printf("generation\t\t%llu\n",
+ (unsigned long long)btrfs_super_generation(sb));
+ printf("root\t\t\t%llu\n", (unsigned long long)btrfs_super_root(sb));
+ printf("sys_array_size\t\t%llu\n",
+ (unsigned long long)btrfs_super_sys_array_size(sb));
+ printf("chunk_root_generation\t%llu\n",
+ (unsigned long long)btrfs_super_chunk_root_generation(sb));
+ printf("root_level\t\t%llu\n",
+ (unsigned long long)btrfs_super_root_level(sb));
+ printf("chunk_root\t\t%llu\n",
+ (unsigned long long)btrfs_super_chunk_root(sb));
+ printf("chunk_root_level\t%llu\n",
+ (unsigned long long)btrfs_super_chunk_root_level(sb));
+ printf("log_root\t\t%llu\n",
+ (unsigned long long)btrfs_super_log_root(sb));
+ printf("log_root_transid\t%llu\n",
+ (unsigned long long)btrfs_super_log_root_transid(sb));
+ printf("log_root_level\t\t%llu\n",
+ (unsigned long long)btrfs_super_log_root_level(sb));
+ printf("total_bytes\t\t%llu\n",
+ (unsigned long long)btrfs_super_total_bytes(sb));
+ printf("bytes_used\t\t%llu\n",
+ (unsigned long long)btrfs_super_bytes_used(sb));
+ printf("sectorsize\t\t%llu\n",
+ (unsigned long long)btrfs_super_sectorsize(sb));
+ printf("nodesize\t\t%llu\n",
+ (unsigned long long)btrfs_super_nodesize(sb));
+ printf("leafsize (deprecated)\t%u\n",
+ le32_to_cpu(sb->__unused_leafsize));
+ printf("stripesize\t\t%llu\n",
+ (unsigned long long)btrfs_super_stripesize(sb));
+ printf("root_dir\t\t%llu\n",
+ (unsigned long long)btrfs_super_root_dir(sb));
+ printf("num_devices\t\t%llu\n",
+ (unsigned long long)btrfs_super_num_devices(sb));
+ printf("compat_flags\t\t0x%llx\n",
+ (unsigned long long)btrfs_super_compat_flags(sb));
+ printf("compat_ro_flags\t\t0x%llx\n",
+ (unsigned long long)btrfs_super_compat_ro_flags(sb));
+ print_readable_compat_ro_flag(btrfs_super_compat_ro_flags(sb));
+ printf("incompat_flags\t\t0x%llx\n",
+ (unsigned long long)btrfs_super_incompat_flags(sb));
+ print_readable_incompat_flag(btrfs_super_incompat_flags(sb));
+ printf("cache_generation\t%llu\n",
+ (unsigned long long)btrfs_super_cache_generation(sb));
+ printf("uuid_tree_generation\t%llu\n",
+ (unsigned long long)btrfs_super_uuid_tree_generation(sb));
+
+ uuid_unparse(sb->dev_item.uuid, buf);
+ printf("dev_item.uuid\t\t%s\n", buf);
+
+ uuid_unparse(sb->dev_item.fsid, buf);
+ if (metadata_uuid_present) {
+ cmp_res = !memcmp(sb->dev_item.fsid, sb->metadata_uuid,
+ BTRFS_FSID_SIZE);
+ } else {
+ cmp_res = !memcmp(sb->dev_item.fsid, sb->fsid, BTRFS_FSID_SIZE);
+ }
+ printf("dev_item.fsid\t\t%s %s\n", buf,
+ cmp_res ? "[match]" : "[DON'T MATCH]");
+
+ printf("dev_item.type\t\t%llu\n", (unsigned long long)
+ btrfs_stack_device_type(&sb->dev_item));
+ printf("dev_item.total_bytes\t%llu\n", (unsigned long long)
+ btrfs_stack_device_total_bytes(&sb->dev_item));
+ printf("dev_item.bytes_used\t%llu\n", (unsigned long long)
+ btrfs_stack_device_bytes_used(&sb->dev_item));
+ printf("dev_item.io_align\t%u\n", (unsigned int)
+ btrfs_stack_device_io_align(&sb->dev_item));
+ printf("dev_item.io_width\t%u\n", (unsigned int)
+ btrfs_stack_device_io_width(&sb->dev_item));
+ printf("dev_item.sector_size\t%u\n", (unsigned int)
+ btrfs_stack_device_sector_size(&sb->dev_item));
+ printf("dev_item.devid\t\t%llu\n",
+ btrfs_stack_device_id(&sb->dev_item));
+ printf("dev_item.dev_group\t%u\n", (unsigned int)
+ btrfs_stack_device_group(&sb->dev_item));
+ printf("dev_item.seek_speed\t%u\n", (unsigned int)
+ btrfs_stack_device_seek_speed(&sb->dev_item));
+ printf("dev_item.bandwidth\t%u\n", (unsigned int)
+ btrfs_stack_device_bandwidth(&sb->dev_item));
+ printf("dev_item.generation\t%llu\n", (unsigned long long)
+ btrfs_stack_device_generation(&sb->dev_item));
+ if (full) {
+ printf("sys_chunk_array[%d]:\n", BTRFS_SYSTEM_CHUNK_ARRAY_SIZE);
+ print_sys_chunk_array(sb);
+ printf("backup_roots[%d]:\n", BTRFS_NUM_BACKUP_ROOTS);
+ print_backup_roots(sb);
+ }
+}
diff --git a/print-tree.h b/print-tree.h
index 92ed5fb7c270..0ce8d92fa305 100644
--- a/print-tree.h
+++ b/print-tree.h
@@ -39,4 +39,5 @@ void print_chunk_item(struct extent_buffer *eb, struct btrfs_chunk *chunk);
void print_extent_item(struct extent_buffer *eb, int slot, int metadata);
void print_objectid(FILE *stream, u64 objectid, u8 type);
void print_key_type(FILE *stream, u64 objectid, u8 type);
+void btrfs_print_superblock(struct btrfs_super_block *sb, int full);
#endif
--
2.26.2
