* %End-Header%
*/
+#include "config.h"
#include <stdio.h>
#include <string.h>
#if HAVE_UNISTD_H
int csum_flag;
int bigalloc_flag;
int io_flags;
+ unsigned reserved_inos;
char *buf = 0;
char c;
+ double reserved_ratio;
if (!param || !ext2fs_blocks_count(param))
return EXT2_ET_INVALID_ARGUMENT;
fs->magic = EXT2_ET_MAGIC_EXT2FS_FILSYS;
fs->flags = flags | EXT2_FLAG_RW;
fs->umask = 022;
+ fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
#ifdef WORDS_BIGENDIAN
fs->flags |= EXT2_FLAG_SWAP_BYTES;
#endif
io_flags = IO_FLAG_RW;
if (flags & EXT2_FLAG_EXCLUSIVE)
io_flags |= IO_FLAG_EXCLUSIVE;
+ if (flags & EXT2_FLAG_DIRECT_IO)
+ io_flags |= IO_FLAG_DIRECT_IO;
retval = manager->open(name, io_flags, &fs->io);
if (retval)
goto cleanup;
set_field(s_raid_stripe_width, 0); /* default stripe width: 0 */
set_field(s_log_groups_per_flex, 0);
set_field(s_flags, 0);
+ assign_field(s_backup_bgs[0]);
+ assign_field(s_backup_bgs[1]);
if (super->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP) {
retval = EXT2_ET_UNSUPP_FEATURE;
goto cleanup;
super->s_creator_os = CREATOR_OS;
- fs->blocksize = EXT2_BLOCK_SIZE(super);
+ fs->fragsize = fs->blocksize = EXT2_BLOCK_SIZE(super);
fs->cluster_ratio_bits = super->s_log_cluster_size -
super->s_log_block_size;
if (bigalloc_flag) {
+ unsigned long long bpg;
+
if (param->s_blocks_per_group &&
param->s_clusters_per_group &&
((param->s_clusters_per_group * EXT2FS_CLUSTER_RATIO(fs)) !=
super->s_clusters_per_group =
param->s_blocks_per_group /
EXT2FS_CLUSTER_RATIO(fs);
- else
+ else if (super->s_log_cluster_size + 15 < 32)
super->s_clusters_per_group = fs->blocksize * 8;
+ else
+ super->s_clusters_per_group = (fs->blocksize - 1) * 8;
if (super->s_clusters_per_group > EXT2_MAX_CLUSTERS_PER_GROUP(super))
- super->s_blocks_per_group = EXT2_MAX_CLUSTERS_PER_GROUP(super);
- super->s_blocks_per_group = EXT2FS_C2B(fs,
- super->s_clusters_per_group);
+ super->s_clusters_per_group = EXT2_MAX_CLUSTERS_PER_GROUP(super);
+ bpg = EXT2FS_C2B(fs,
+ (unsigned long long) super->s_clusters_per_group);
+ if (bpg >= (((unsigned long long) 1) << 32)) {
+ retval = EXT2_ET_INVALID_ARGUMENT;
+ goto cleanup;
+ }
+ super->s_blocks_per_group = bpg;
} else {
set_field(s_blocks_per_group, fs->blocksize * 8);
if (super->s_blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(super))
goto cleanup;
}
+ set_field(s_mmp_update_interval, 0);
+
/*
* If we're creating an external journal device, we don't need
* to bother with the rest.
}
retry:
- fs->group_desc_count = (blk_t) ext2fs_div64_ceil(
+ fs->group_desc_count = (dgrp_t) ext2fs_div64_ceil(
ext2fs_blocks_count(super) - super->s_first_data_block,
EXT2_BLOCKS_PER_GROUP(super));
if (fs->group_desc_count == 0) {
goto cleanup;
}
- if (super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT)
- super->s_desc_size = EXT2_MIN_DESC_SIZE_64BIT;
+ set_field(s_desc_size,
+ super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_64BIT ?
+ EXT2_MIN_DESC_SIZE_64BIT : 0);
fs->desc_blocks = ext2fs_div_ceil(fs->group_desc_count,
EXT2_DESC_PER_BLOCK(super));
if (rem && (rem < overhead+50)) {
ext2fs_blocks_count_set(super, ext2fs_blocks_count(super) -
rem);
+ /*
+ * If blocks count is changed, we need to recalculate
+ * reserved blocks count not to exceed 50%.
+ */
+ reserved_ratio = 100.0 * ext2fs_r_blocks_count(param) /
+ ext2fs_blocks_count(param);
+ ext2fs_r_blocks_count_set(super, reserved_ratio *
+ ext2fs_blocks_count(super) / 100.0);
goto retry;
}
* count.
*/
+ /* Set up the locations of the backup superblocks */
+ if (super->s_feature_compat & EXT4_FEATURE_COMPAT_SPARSE_SUPER2) {
+ if (super->s_backup_bgs[0] >= fs->group_desc_count)
+ super->s_backup_bgs[0] = fs->group_desc_count - 1;
+ if (super->s_backup_bgs[1] >= fs->group_desc_count)
+ super->s_backup_bgs[1] = fs->group_desc_count - 1;
+ if (super->s_backup_bgs[0] == super->s_backup_bgs[1])
+ super->s_backup_bgs[1] = 0;
+ if (super->s_backup_bgs[0] > super->s_backup_bgs[1]) {
+ __u32 t = super->s_backup_bgs[0];
+ super->s_backup_bgs[0] = super->s_backup_bgs[1];
+ super->s_backup_bgs[1] = t;
+ }
+ }
+
retval = ext2fs_get_mem(strlen(fs->device_name) + 80, &buf);
if (retval)
goto cleanup;
free_blocks = 0;
csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
+ reserved_inos = super->s_first_ino;
for (i = 0; i < fs->group_desc_count; i++) {
/*
* Don't set the BLOCK_UNINIT group for the last group
EXT2_BG_BLOCK_UNINIT);
ext2fs_bg_flags_set(fs, i, EXT2_BG_INODE_UNINIT);
numblocks = super->s_inodes_per_group;
- if (i == 0)
- numblocks -= super->s_first_ino;
+ if (reserved_inos) {
+ if (numblocks > reserved_inos) {
+ numblocks -= reserved_inos;
+ reserved_inos = 0;
+ } else {
+ reserved_inos -= numblocks;
+ numblocks = 0;
+ }
+ }
ext2fs_bg_itable_unused_set(fs, i, numblocks);
}
numblocks = ext2fs_reserve_super_and_bgd(fs, i, fs->block_map);