@@ -70,7 +70,8 @@ objects = ctree.o disk-io.o radix-tree.o extent-tree.o print-tree.o \
extent-cache.o extent_io.o volumes.o utils.o repair.o \
qgroup.o raid6.o free-space-cache.o list_sort.o props.o \
ulist.o qgroup-verify.o backref.o string-table.o task-utils.o \
- inode.o file.o find-root.o free-space-tree.o help.o cmds-inspect-dump-tree.o
+ inode.o file.o find-root.o free-space-tree.o help.o \
+ cmds-inspect-dump-tree.o cmds-inspect-dump-super.o
cmds_objects = cmds-subvolume.o cmds-filesystem.o cmds-device.o cmds-scrub.o \
cmds-inspect.o cmds-balance.o cmds-send.o cmds-receive.o \
cmds-quota.o cmds-qgroup.o cmds-replace.o cmds-check.o \
@@ -16,527 +16,21 @@
* Boston, MA 021110-1307, USA.
*/
-#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 "kerncompat.h"
-#include "ctree.h"
-#include "disk-io.h"
-#include "print-tree.h"
-#include "transaction.h"
-#include "list.h"
#include "utils.h"
-#include "crc32c.h"
-
-static void print_usage(void);
-static void dump_superblock(struct btrfs_super_block *sb, int full);
-int main(int argc, char **argv);
-static int load_and_dump_sb(char *, int fd, u64 sb_bytenr, int full, int force);
-
-
-static void print_usage(void)
-{
- fprintf(stderr,
- "usage: btrfs-show-super [-i super_mirror|-a|-f|-F] dev [dev..]\n");
- fprintf(stderr, "\t-f : print full superblock information\n");
- fprintf(stderr, "\t-a : print information of all superblocks\n");
- fprintf(stderr, "\t-i <super_mirror> : specify which mirror to print out\n");
- fprintf(stderr, "\t-F : attempt to dump superblocks with bad magic\n");
- fprintf(stderr, "\t-s <bytenr> : specify alternate superblock offset\n");
- fprintf(stderr, "%s\n", PACKAGE_STRING);
-}
+#include "commands.h"
+#include "cmds-inspect-dump-super.h"
int main(int argc, char **argv)
{
- int opt;
- int all = 0;
- int full = 0;
- int force = 0;
- char *filename;
- int fd = -1;
- int i;
- u64 arg;
- u64 sb_bytenr = btrfs_sb_offset(0);
-
- while ((opt = getopt(argc, argv, "fFai:s:")) != -1) {
- switch (opt) {
- case 'i':
- arg = arg_strtou64(optarg);
- if (arg >= BTRFS_SUPER_MIRROR_MAX) {
- fprintf(stderr,
- "Illegal super_mirror %llu\n",
- arg);
- print_usage();
- exit(1);
- }
- sb_bytenr = btrfs_sb_offset(arg);
- break;
- case 'a':
- all = 1;
- break;
- case 'f':
- full = 1;
- break;
- case 'F':
- force = 1;
- break;
- case 's':
- sb_bytenr = arg_strtou64(optarg);
- all = 0;
- break;
- default:
- print_usage();
- exit(1);
- }
- }
+ int ret;
set_argv0(argv);
- if (check_argc_min(argc - optind, 1)) {
- print_usage();
- exit(1);
- }
-
- for (i = optind; i < argc; i++) {
- filename = argv[i];
- fd = open(filename, O_RDONLY, 0666);
- if (fd < 0) {
- fprintf(stderr, "Could not open %s\n", filename);
- exit(1);
- }
-
- if (all) {
- int idx;
- for (idx = 0; idx < BTRFS_SUPER_MIRROR_MAX; idx++) {
- sb_bytenr = btrfs_sb_offset(idx);
- if (load_and_dump_sb(filename, fd,
- sb_bytenr, full, force)) {
- close(fd);
- exit(1);
- }
-
- putchar('\n');
- }
- } else {
- load_and_dump_sb(filename, fd, sb_bytenr, full, force);
- putchar('\n');
- }
- close(fd);
- }
-
- exit(0);
-}
-
-static int load_and_dump_sb(char *filename, int fd, u64 sb_bytenr, int full,
- int force)
-{
- u8 super_block_data[BTRFS_SUPER_INFO_SIZE];
- struct btrfs_super_block *sb;
- u64 ret;
-
- sb = (struct btrfs_super_block *)super_block_data;
-
- ret = pread64(fd, super_block_data, BTRFS_SUPER_INFO_SIZE, sb_bytenr);
- if (ret != BTRFS_SUPER_INFO_SIZE) {
- /* check if the disk if too short for further superblock */
- if (ret == 0 && errno == 0)
- return 0;
-
- fprintf(stderr,
- "ERROR: Failed to read the superblock on %s at %llu\n",
- filename, (unsigned long long)sb_bytenr);
- fprintf(stderr,
- "ERROR: error = '%s', errno = %d\n", strerror(errno), errno);
- return 1;
- }
- printf("superblock: bytenr=%llu, device=%s\n", sb_bytenr, filename);
- printf("---------------------------------------------------------\n");
- if (btrfs_super_magic(sb) != BTRFS_MAGIC && !force) {
- fprintf(stderr,
- "ERROR: bad magic on superblock on %s at %llu\n",
- filename, (unsigned long long)sb_bytenr);
- } else {
- dump_superblock(sb, full);
- }
- return 0;
-}
-
-static int check_csum_sblock(void *sb, int csum_size)
-{
- char result[BTRFS_CSUM_SIZE];
- u32 crc = ~(u32)0;
-
- crc = btrfs_csum_data(NULL, (char *)sb + BTRFS_CSUM_SIZE,
- crc, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
- btrfs_csum_final(crc, result);
-
- 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) {
- 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 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_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_LZOv2),
- 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)
-};
-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_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 dump_superblock(struct btrfs_super_block *sb, int full)
-{
- int i;
- char *s, buf[BTRFS_UUID_UNPARSED_SIZE];
- u8 *p;
-
- printf("csum\t\t\t0x");
- for (i = 0, p = sb->csum; i < btrfs_super_csum_size(sb); i++)
- printf("%02x", p[i]);
- if (check_csum_sblock(sb, btrfs_super_csum_size(sb)))
- 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);
-
- 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\t\t%llu\n",
- (unsigned long long)btrfs_super_leafsize(sb));
- 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));
- 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("csum_type\t\t%llu\n",
- (unsigned long long)btrfs_super_csum_type(sb));
- printf("csum_size\t\t%llu\n",
- (unsigned long long)btrfs_super_csum_size(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);
+ if (argc > 1 && !strcmp(argv[1], "--help"))
+ usage(cmd_inspect_dump_super_usage);
- uuid_unparse(sb->dev_item.fsid, buf);
- printf("dev_item.fsid\t\t%s %s\n", buf,
- !memcmp(sb->dev_item.fsid, sb->fsid, BTRFS_FSID_SIZE) ?
- "[match]" : "[DON'T MATCH]");
+ ret = cmd_inspect_dump_super(argc, argv);
- 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);
- }
+ return ret;
}
new file mode 100644
@@ -0,0 +1,539 @@
+/*
+ * Copyright (C) 2012 STRATO AG. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+#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 "kerncompat.h"
+#include "ctree.h"
+#include "disk-io.h"
+#include "print-tree.h"
+#include "transaction.h"
+#include "list.h"
+#include "utils.h"
+#include "commands.h"
+#include "crc32c.h"
+#include "cmds-inspect-dump-super.h"
+
+
+static int check_csum_sblock(void *sb, int csum_size)
+{
+ char result[BTRFS_CSUM_SIZE];
+ u32 crc = ~(u32)0;
+
+ crc = btrfs_csum_data(NULL, (char *)sb + BTRFS_CSUM_SIZE,
+ crc, BTRFS_SUPER_INFO_SIZE - BTRFS_CSUM_SIZE);
+ btrfs_csum_final(crc, result);
+
+ 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) {
+ fprintf(stderr, "%s\n", strerror(ENOMEM));
+ goto out;
+ }
+ 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);
+out:
+ return;
+
+out_short_read:
+ printk("ERROR: sys_array too short to read %u bytes at offset %u\n",
+ 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_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_LZOv2),
+ 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)
+};
+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_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 dump_superblock(struct btrfs_super_block *sb, int full)
+{
+ int i;
+ char *s, buf[BTRFS_UUID_UNPARSED_SIZE];
+ u8 *p;
+
+ printf("csum\t\t\t0x");
+ for (i = 0, p = sb->csum; i < btrfs_super_csum_size(sb); i++)
+ printf("%02x", p[i]);
+ if (check_csum_sblock(sb, btrfs_super_csum_size(sb)))
+ 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);
+
+ 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\t\t%llu\n",
+ (unsigned long long)btrfs_super_leafsize(sb));
+ 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));
+ 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("csum_type\t\t%llu\n",
+ (unsigned long long)btrfs_super_csum_type(sb));
+ printf("csum_size\t\t%llu\n",
+ (unsigned long long)btrfs_super_csum_size(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);
+ printf("dev_item.fsid\t\t%s %s\n", buf,
+ !memcmp(sb->dev_item.fsid, sb->fsid, BTRFS_FSID_SIZE) ?
+ "[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)
+{
+ u8 super_block_data[BTRFS_SUPER_INFO_SIZE];
+ struct btrfs_super_block *sb;
+ u64 ret;
+
+ sb = (struct btrfs_super_block *)super_block_data;
+
+ ret = pread64(fd, super_block_data, BTRFS_SUPER_INFO_SIZE, sb_bytenr);
+ if (ret != BTRFS_SUPER_INFO_SIZE) {
+ /* check if the disk if too short for further superblock */
+ if (ret == 0 && errno == 0)
+ return 0;
+
+ fprintf(stderr,
+ "ERROR: Failed to read the superblock on %s at %llu\n",
+ filename, (unsigned long long)sb_bytenr);
+ fprintf(stderr,
+ "ERROR: error = '%s', errno = %d\n", strerror(errno), errno);
+ return 1;
+ }
+ printf("superblock: bytenr=%llu, device=%s\n", sb_bytenr, filename);
+ printf("---------------------------------------------------------\n");
+ if (btrfs_super_magic(sb) != BTRFS_MAGIC && !force) {
+ fprintf(stderr,
+ "ERROR: bad magic on superblock on %s at %llu\n",
+ filename, (unsigned long long)sb_bytenr);
+ } else {
+ dump_superblock(sb, full);
+ }
+ return 0;
+}
+
+const char * const cmd_inspect_dump_super_usage[] = {
+ "btrfs inspect-internal dump-super [options] device [device...]",
+ "Dump superblock from a device",
+ "-f print full superblock information",
+ "-a print information of all superblocks",
+ "-i <super_mirror> specify which mirror to print out",
+ "-F attempt to dump superblocks with bad magic",
+ "-s <bytenr> specify alternate superblock offset",
+ NULL
+};
+
+int cmd_inspect_dump_super(int argc, char **argv)
+{
+ int opt;
+ int all = 0;
+ int full = 0;
+ int force = 0;
+ char *filename;
+ int fd = -1;
+ int i;
+ int ret = 0;
+ u64 arg;
+ u64 sb_bytenr = btrfs_sb_offset(0);
+
+ while ((opt = getopt(argc, argv, "fFai:s:")) != -1) {
+ switch (opt) {
+ case 'i':
+ arg = arg_strtou64(optarg);
+ if (arg >= BTRFS_SUPER_MIRROR_MAX) {
+ fprintf(stderr,
+ "Illegal super_mirror %llu\n",
+ arg);
+ usage(cmd_inspect_dump_super_usage);
+ }
+ sb_bytenr = btrfs_sb_offset(arg);
+ break;
+
+ case 'a':
+ all = 1;
+ break;
+ case 'f':
+ full = 1;
+ break;
+ case 'F':
+ force = 1;
+ break;
+ case 's':
+ sb_bytenr = arg_strtou64(optarg);
+ all = 0;
+ break;
+ default:
+ usage(cmd_inspect_dump_super_usage);
+ }
+ }
+
+ if (check_argc_min(argc - optind, 1))
+ usage(cmd_inspect_dump_super_usage);
+
+ for (i = optind; i < argc; i++) {
+ filename = argv[i];
+ fd = open(filename, O_RDONLY, 0666);
+ if (fd < 0) {
+ fprintf(stderr, "Could not open %s\n", filename);
+ ret = 1;
+ goto out;
+ }
+
+ if (all) {
+ int idx;
+
+ for (idx = 0; idx < BTRFS_SUPER_MIRROR_MAX; idx++) {
+ sb_bytenr = btrfs_sb_offset(idx);
+ if (load_and_dump_sb(filename, fd,
+ sb_bytenr, full, force)) {
+ close(fd);
+ ret = 1;
+ goto out;
+ }
+
+ putchar('\n');
+ }
+ } else {
+ load_and_dump_sb(filename, fd, sb_bytenr, full, force);
+ putchar('\n');
+ }
+ close(fd);
+ }
+
+out:
+ return ret;
+}
new file mode 100644
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2012 STRATO AG. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+#ifndef __CMDS_INSPECT_DUMP_SUPER_H__
+#define __CMDS_INSPECT_DUMP_SUPER_H__
+
+int cmd_inspect_dump_super(int ac, char **av);
+
+extern const char * const cmd_inspect_dump_super_usage[];
+
+#endif
@@ -32,6 +32,7 @@
#include "commands.h"
#include "btrfs-list.h"
#include "cmds-inspect-dump-tree.h"
+#include "cmds-inspect-dump-super.h"
static const char * const inspect_cmd_group_usage[] = {
"btrfs inspect-internal <command> <args>",
@@ -625,6 +626,11 @@ static int cmd_inspect_dump_tree_hook(int ac, char **av)
return cmd_inspect_dump_tree(ac, av);
}
+static int cmd_inspect_dump_super_hook(int ac, char **av)
+{
+ return cmd_inspect_dump_super(ac, av);
+}
+
static const char inspect_cmd_group_info[] =
"query various internal information";
@@ -642,6 +648,8 @@ const struct cmd_group inspect_cmd_group = {
cmd_inspect_min_dev_size_usage, NULL, 0 },
{ "dump-tree", cmd_inspect_dump_tree_hook,
cmd_inspect_dump_tree_usage, NULL, 0 },
+ { "dump-super", cmd_inspect_dump_super_hook,
+ cmd_inspect_dump_super_usage, NULL, 0 },
NULL_CMD_STRUCT
}
};
The long-term plan is to merge the features of standalone tools into the btrfs binary, reducing the number of shipped binaries. Signed-off-by: Alexander Fougner <fougner89@gmail.com> --- Makefile.in | 3 +- btrfs-show-super.c | 520 +------------------------------------------- cmds-inspect-dump-super.c | 539 ++++++++++++++++++++++++++++++++++++++++++++++ cmds-inspect-dump-super.h | 26 +++ cmds-inspect.c | 8 + 5 files changed, 582 insertions(+), 514 deletions(-) create mode 100644 cmds-inspect-dump-super.c create mode 100644 cmds-inspect-dump-super.h -- 2.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html