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/*
* 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 __BTRFS_FSFEATURES_H__
#define __BTRFS_FSFEATURES_H__
#include "kerncompat.h"
#include <stdio.h>
#include "kernel-lib/sizes.h"
#define BTRFS_MKFS_DEFAULT_NODE_SIZE SZ_16K
/*
* Since one feature can set at least one bit in either
* incompat/compat_or/runtime flags, all mkfs features users should
* use this structure to parse the features.
*/
struct btrfs_mkfs_features {
u64 incompat_flags;
u64 compat_ro_flags;
u64 runtime_flags;
};
#define BTRFS_FEATURE_RUNTIME_QUOTA (1ULL << 0)
#define BTRFS_FEATURE_RUNTIME_LIST_ALL (1ULL << 1)
/*
* Such buffer size should be able to contain all feature string, with extra
* ", " for each feature.
*/
#define BTRFS_FEATURE_STRING_BUF_SIZE (160)
static const struct btrfs_mkfs_features btrfs_mkfs_default_features = {
.compat_ro_flags = BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE |
BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID,
.incompat_flags = BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF |
BTRFS_FEATURE_INCOMPAT_NO_HOLES |
BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA,
};
/*
* Avoid multi-device features (RAID56 and RAID1C34), mixed bgs, and zoned
* mode for btrfs-convert, as all supported fses are single device fses.
*
* Features like compression is disabled in btrfs-convert by default, as
* data is reusing the old data from the source fs.
* Corresponding flag will be set when the first compression write happens.
*/
static const struct btrfs_mkfs_features btrfs_convert_allowed_features = {
.compat_ro_flags = BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE |
BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID |
BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE,
.incompat_flags = BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF |
BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL |
BTRFS_FEATURE_INCOMPAT_BIG_METADATA |
BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF |
BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA |
BTRFS_FEATURE_INCOMPAT_NO_HOLES,
.runtime_flags = BTRFS_FEATURE_RUNTIME_QUOTA,
};
void btrfs_list_all_fs_features(const struct btrfs_mkfs_features *allowed);
void btrfs_list_all_runtime_features(const struct btrfs_mkfs_features *allowed);
char *btrfs_parse_fs_features(char *namelist,
struct btrfs_mkfs_features *features);
char *btrfs_parse_runtime_features(char *namelist,
struct btrfs_mkfs_features *features);
void btrfs_process_fs_features(struct btrfs_mkfs_features *features);
void btrfs_process_runtime_features(struct btrfs_mkfs_features *features);
void btrfs_parse_fs_features_to_string(char *buf,
const struct btrfs_mkfs_features *features);
void btrfs_parse_runtime_features_to_string(char *buf,
const struct btrfs_mkfs_features *features);
void print_kernel_version(FILE *stream, u32 version);
u32 get_running_kernel_version(void);
int btrfs_check_nodesize(u32 nodesize, u32 sectorsize,
struct btrfs_mkfs_features *features);
int btrfs_check_sectorsize(u32 sectorsize);
int btrfs_check_features(const struct btrfs_mkfs_features *features,
const struct btrfs_mkfs_features *allowed);
int btrfs_tree_search2_ioctl_supported(int fd);
void btrfs_assert_feature_buf_size(void);
#endif
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