98 lines
3.7 KiB
C
98 lines
3.7 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License v2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 021110-1307, USA.
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*/
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#ifndef __BTRFS_FSFEATURES_H__
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#define __BTRFS_FSFEATURES_H__
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#include "kerncompat.h"
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#include <stdio.h>
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#include "kernel-lib/sizes.h"
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#define BTRFS_MKFS_DEFAULT_NODE_SIZE SZ_16K
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/*
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* Since one feature can set at least one bit in either
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* incompat/compat_or/runtime flags, all mkfs features users should
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* use this structure to parse the features.
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*/
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struct btrfs_mkfs_features {
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u64 incompat_flags;
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u64 compat_ro_flags;
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u64 runtime_flags;
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};
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#define BTRFS_FEATURE_RUNTIME_QUOTA (1ULL << 0)
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#define BTRFS_FEATURE_RUNTIME_LIST_ALL (1ULL << 1)
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/*
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* Such buffer size should be able to contain all feature string, with extra
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* ", " for each feature.
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*/
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#define BTRFS_FEATURE_STRING_BUF_SIZE (160)
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static const struct btrfs_mkfs_features btrfs_mkfs_default_features = {
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.compat_ro_flags = BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE |
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BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID,
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.incompat_flags = BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF |
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BTRFS_FEATURE_INCOMPAT_NO_HOLES |
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BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA,
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};
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/*
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* Avoid multi-device features (RAID56 and RAID1C34), mixed bgs, and zoned
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* mode for btrfs-convert, as all supported fses are single device fses.
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*
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* Features like compression is disabled in btrfs-convert by default, as
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* data is reusing the old data from the source fs.
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* Corresponding flag will be set when the first compression write happens.
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*/
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static const struct btrfs_mkfs_features btrfs_convert_allowed_features = {
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.compat_ro_flags = BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE |
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BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID |
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BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE,
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.incompat_flags = BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF |
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BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL |
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BTRFS_FEATURE_INCOMPAT_BIG_METADATA |
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BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF |
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BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA |
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BTRFS_FEATURE_INCOMPAT_NO_HOLES,
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.runtime_flags = BTRFS_FEATURE_RUNTIME_QUOTA,
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};
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void btrfs_list_all_fs_features(const struct btrfs_mkfs_features *allowed);
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void btrfs_list_all_runtime_features(const struct btrfs_mkfs_features *allowed);
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char *btrfs_parse_fs_features(char *namelist,
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struct btrfs_mkfs_features *features);
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char *btrfs_parse_runtime_features(char *namelist,
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struct btrfs_mkfs_features *features);
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void btrfs_process_fs_features(struct btrfs_mkfs_features *features);
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void btrfs_process_runtime_features(struct btrfs_mkfs_features *features);
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void btrfs_parse_fs_features_to_string(char *buf,
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const struct btrfs_mkfs_features *features);
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void btrfs_parse_runtime_features_to_string(char *buf,
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const struct btrfs_mkfs_features *features);
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void print_kernel_version(FILE *stream, u32 version);
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u32 get_running_kernel_version(void);
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int btrfs_check_nodesize(u32 nodesize, u32 sectorsize,
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struct btrfs_mkfs_features *features);
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int btrfs_check_sectorsize(u32 sectorsize);
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int btrfs_check_features(const struct btrfs_mkfs_features *features,
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const struct btrfs_mkfs_features *allowed);
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int btrfs_tree_search2_ioctl_supported(int fd);
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void btrfs_assert_feature_buf_size(void);
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#endif
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