void do_show_super_stats(int argc, char *argv[])
{
dgrp_t i;
FILE *out;
struct ext2_group_desc *gdp;
int c, header_only = 0;
int numdirs = 0, first, gdt_csum;
reset_getopt();
while ((c = getopt (argc, argv, "h")) != EOF) {
switch (c) {
case 'h':
header_only++;
break;
default:
goto print_usage;
}
}
if (optind != argc) {
goto print_usage;
}
if (check_fs_open(argv[0]))
return;
out = open_pager();
list_super2(current_fs->super, out);
for (i=0; i < current_fs->group_desc_count; i++)
numdirs += current_fs->group_desc[i].bg_used_dirs_count;
fprintf(out, "Directories: %d\n", numdirs);
if (header_only) {
close_pager(out);
return;
}
gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
gdp = ¤t_fs->group_desc[0];
for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
fprintf(out, " Group %2d: block bitmap at %u, "
"inode bitmap at %u, "
"inode table at %u\n"
" %d free %s, "
"%d free %s, "
"%d used %s%s",
i, gdp->bg_block_bitmap,
gdp->bg_inode_bitmap, gdp->bg_inode_table,
gdp->bg_free_blocks_count,
gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
gdp->bg_free_inodes_count,
gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
gdp->bg_used_dirs_count,
gdp->bg_used_dirs_count != 1 ? "directories"
: "directory", gdt_csum ? ", " : "\n");
if (gdt_csum)
fprintf(out, "%d unused %s\n",
gdp->bg_itable_unused,
gdp->bg_itable_unused != 1 ? "inodes":"inode");
first = 1;
print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
&first, out);
print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
&first, out);
if (gdt_csum) {
fprintf(out, "%sChecksum 0x%04x",
first ? " [":", ", gdp->bg_checksum);
first = 0;
}
if (!first)
fputs("]\n", out);
}
close_pager(out);
return;
print_usage:
fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
}
static void list_desc (ext2_filsys fs)
{
unsigned long i;
blk64_t first_block, last_block;
blk64_t super_blk, old_desc_blk, new_desc_blk;
char *block_bitmap=NULL, *inode_bitmap=NULL;
const char *units = _("blocks");
int inode_blocks_per_group, old_desc_blocks, reserved_gdt;
int block_nbytes, inode_nbytes;
int has_super;
blk64_t blk_itr = EXT2FS_B2C(fs, fs->super->s_first_data_block);
ext2_ino_t ino_itr = 1;
errcode_t retval;
if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_BIGALLOC))
units = _("clusters");
block_nbytes = EXT2_CLUSTERS_PER_GROUP(fs->super) / 8;
inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
if (fs->block_map)
block_bitmap = malloc(block_nbytes);
if (fs->inode_map)
inode_bitmap = malloc(inode_nbytes);
inode_blocks_per_group = ((fs->super->s_inodes_per_group *
EXT2_INODE_SIZE(fs->super)) +
EXT2_BLOCK_SIZE(fs->super) - 1) /
EXT2_BLOCK_SIZE(fs->super);
reserved_gdt = fs->super->s_reserved_gdt_blocks;
fputc('\n', stdout);
first_block = fs->super->s_first_data_block;
if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
old_desc_blocks = fs->super->s_first_meta_bg;
else
old_desc_blocks = fs->desc_blocks;
for (i = 0; i < fs->group_desc_count; i++) {
first_block = ext2fs_group_first_block2(fs, i);
last_block = ext2fs_group_last_block2(fs, i);
ext2fs_super_and_bgd_loc2(fs, i, &super_blk,
&old_desc_blk, &new_desc_blk, 0);
printf (_("Group %lu: (Blocks "), i);
print_range(first_block, last_block);
fputs(")", stdout);
print_bg_opts(fs, i);
if (ext2fs_has_group_desc_csum(fs)) {
unsigned csum = ext2fs_bg_checksum(fs, i);
unsigned exp_csum = ext2fs_group_desc_csum(fs, i);
printf(_(" Checksum 0x%04x"), csum);
if (csum != exp_csum)
printf(_(" (EXPECTED 0x%04x)"), exp_csum);
printf(_(", unused inodes %u\n"),
ext2fs_bg_itable_unused(fs, i));
}
has_super = ((i==0) || super_blk);
if (has_super) {
printf (_(" %s superblock at "),
i == 0 ? _("Primary") : _("Backup"));
print_number(super_blk);
}
if (old_desc_blk) {
printf("%s", _(", Group descriptors at "));
print_range(old_desc_blk,
old_desc_blk + old_desc_blocks - 1);
if (reserved_gdt) {
printf("%s", _("\n Reserved GDT blocks at "));
print_range(old_desc_blk + old_desc_blocks,
old_desc_blk + old_desc_blocks +
reserved_gdt - 1);
}
} else if (new_desc_blk) {
fputc(has_super ? ',' : ' ', stdout);
printf("%s", _(" Group descriptor at "));
print_number(new_desc_blk);
has_super++;
}
if (has_super)
fputc('\n', stdout);
fputs(_(" Block bitmap at "), stdout);
print_number(ext2fs_block_bitmap_loc(fs, i));
print_bg_rel_offset(fs, ext2fs_block_bitmap_loc(fs, i), 0,
first_block, last_block);
if (fs->super->s_feature_ro_compat &
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
printf(_(", csum 0x%08x"),
ext2fs_block_bitmap_checksum(fs, i));
fputs(_(", Inode bitmap at "), stdout);
print_number(ext2fs_inode_bitmap_loc(fs, i));
print_bg_rel_offset(fs, ext2fs_inode_bitmap_loc(fs, i), 0,
first_block, last_block);
if (fs->super->s_feature_ro_compat &
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
printf(_(", csum 0x%08x"),
ext2fs_inode_bitmap_checksum(fs, i));
fputs(_("\n Inode table at "), stdout);
print_range(ext2fs_inode_table_loc(fs, i),
ext2fs_inode_table_loc(fs, i) +
inode_blocks_per_group - 1);
print_bg_rel_offset(fs, ext2fs_inode_table_loc(fs, i), 1,
first_block, last_block);
printf (_("\n %u free %s, %u free inodes, "
"%u directories%s"),
ext2fs_bg_free_blocks_count(fs, i), units,
ext2fs_bg_free_inodes_count(fs, i),
ext2fs_bg_used_dirs_count(fs, i),
ext2fs_bg_itable_unused(fs, i) ? "" : "\n");
if (ext2fs_bg_itable_unused(fs, i))
printf (_(", %u unused inodes\n"),
ext2fs_bg_itable_unused(fs, i));
if (block_bitmap) {
fputs(_(" Free blocks: "), stdout);
retval = ext2fs_get_block_bitmap_range2(fs->block_map,
blk_itr, block_nbytes << 3, block_bitmap);
if (retval)
com_err("list_desc", retval,
"while reading block bitmap");
else
print_free(i, block_bitmap,
fs->super->s_clusters_per_group,
fs->super->s_first_data_block,
EXT2FS_CLUSTER_RATIO(fs));
fputc('\n', stdout);
blk_itr += fs->super->s_clusters_per_group;
}
if (inode_bitmap) {
fputs(_(" Free inodes: "), stdout);
retval = ext2fs_get_inode_bitmap_range2(fs->inode_map,
ino_itr, inode_nbytes << 3, inode_bitmap);
if (retval)
com_err("list_desc", retval,
"while reading inode bitmap");
else
print_free(i, inode_bitmap,
fs->super->s_inodes_per_group,
1, 1);
fputc('\n', stdout);
ino_itr += fs->super->s_inodes_per_group;
}
}
if (block_bitmap)
free(block_bitmap);
if (inode_bitmap)
free(inode_bitmap);
}
static void list_desc (ext2_filsys fs)
{
unsigned long i;
blk_t first_block, last_block;
blk_t super_blk, old_desc_blk, new_desc_blk;
char *block_bitmap=NULL, *inode_bitmap=NULL;
int inode_blocks_per_group, old_desc_blocks, reserved_gdt;
int block_nbytes, inode_nbytes;
int has_super;
blk_t blk_itr = fs->super->s_first_data_block;
ext2_ino_t ino_itr = 1;
block_nbytes = EXT2_BLOCKS_PER_GROUP(fs->super) / 8;
inode_nbytes = EXT2_INODES_PER_GROUP(fs->super) / 8;
if (fs->block_map)
block_bitmap = malloc(block_nbytes);
if (fs->inode_map)
inode_bitmap = malloc(inode_nbytes);
inode_blocks_per_group = ((fs->super->s_inodes_per_group *
EXT2_INODE_SIZE(fs->super)) +
EXT2_BLOCK_SIZE(fs->super) - 1) /
EXT2_BLOCK_SIZE(fs->super);
reserved_gdt = fs->super->s_reserved_gdt_blocks;
fputc('\n', stdout);
first_block = fs->super->s_first_data_block;
if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
old_desc_blocks = fs->super->s_first_meta_bg;
else
old_desc_blocks = fs->desc_blocks;
for (i = 0; i < fs->group_desc_count; i++) {
first_block = ext2fs_group_first_block(fs, i);
last_block = ext2fs_group_last_block(fs, i);
ext2fs_super_and_bgd_loc(fs, i, &super_blk,
&old_desc_blk, &new_desc_blk, 0);
printf (_("Group %lu: (Blocks "), i);
print_range(first_block, last_block);
fputs(")", stdout);
print_bg_opts(fs, i);
if (fs->super->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM)
printf(_(" Checksum 0x%04x, unused inodes %d\n"),
fs->group_desc[i].bg_checksum,
fs->group_desc[i].bg_itable_unused);
has_super = ((i==0) || super_blk);
if (has_super) {
printf (_(" %s superblock at "),
i == 0 ? _("Primary") : _("Backup"));
print_number(super_blk);
}
if (old_desc_blk) {
printf(_(", Group descriptors at "));
print_range(old_desc_blk,
old_desc_blk + old_desc_blocks - 1);
if (reserved_gdt) {
printf(_("\n Reserved GDT blocks at "));
print_range(old_desc_blk + old_desc_blocks,
old_desc_blk + old_desc_blocks +
reserved_gdt - 1);
}
} else if (new_desc_blk) {
fputc(has_super ? ',' : ' ', stdout);
printf(_(" Group descriptor at "));
print_number(new_desc_blk);
has_super++;
}
if (has_super)
fputc('\n', stdout);
fputs(_(" Block bitmap at "), stdout);
print_number(fs->group_desc[i].bg_block_bitmap);
print_bg_rel_offset(fs, fs->group_desc[i].bg_block_bitmap, 0,
first_block, last_block);
fputs(_(", Inode bitmap at "), stdout);
print_number(fs->group_desc[i].bg_inode_bitmap);
print_bg_rel_offset(fs, fs->group_desc[i].bg_inode_bitmap, 0,
first_block, last_block);
fputs(_("\n Inode table at "), stdout);
print_range(fs->group_desc[i].bg_inode_table,
fs->group_desc[i].bg_inode_table +
inode_blocks_per_group - 1);
print_bg_rel_offset(fs, fs->group_desc[i].bg_inode_table, 1,
first_block, last_block);
printf (_("\n %u free blocks, %u free inodes, "
"%u directories%s"),
fs->group_desc[i].bg_free_blocks_count,
fs->group_desc[i].bg_free_inodes_count,
fs->group_desc[i].bg_used_dirs_count,
fs->group_desc[i].bg_itable_unused ? "" : "\n");
if (fs->group_desc[i].bg_itable_unused)
printf (_(", %u unused inodes\n"),
fs->group_desc[i].bg_itable_unused);
if (block_bitmap) {
fputs(_(" Free blocks: "), stdout);
ext2fs_get_block_bitmap_range(fs->block_map,
blk_itr, block_nbytes << 3, block_bitmap);
print_free (i, block_bitmap,
fs->super->s_blocks_per_group,
fs->super->s_first_data_block);
fputc('\n', stdout);
blk_itr += fs->super->s_blocks_per_group;
}
if (inode_bitmap) {
fputs(_(" Free inodes: "), stdout);
ext2fs_get_inode_bitmap_range(fs->inode_map,
ino_itr, inode_nbytes << 3, inode_bitmap);
print_free (i, inode_bitmap,
fs->super->s_inodes_per_group, 1);
fputc('\n', stdout);
ino_itr += fs->super->s_inodes_per_group;
}
}
if (block_bitmap)
free(block_bitmap);
if (inode_bitmap)
free(inode_bitmap);
}