Alberto Planas
ab1f4e506f
In btrfs-progs 6.15 it is planned to add a new parameter in mkfs.btrfs --inode-flags, that can set attributes for subvolumes, directories, and files. The current supported attributes are "nodatacow", to disable CoW, and "nodatasum", to disable the checksum. This commit extend the "Subvolunes=" option to understand the "nodatacow" flag for subvolums only. If RepartOffline is enabled it will build the image without loopback devices, using the correct --inode-flags parameters. If RepartOffline is disabled it will use loopback devices and set the btrfs attributes accordingly. Signed-off-by: Alberto Planas <aplanas@suse.com>
19 lines
659 B
C
19 lines
659 B
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "basic-forward.h"
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typedef enum BtrfsSubvolFlags {
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BTRFS_SUBVOL_RO = 1 << 0,
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BTRFS_SUBVOL_NODATACOW = 1 << 1,
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_BTRFS_SUBVOL_FLAGS_MASK = BTRFS_SUBVOL_NODATACOW|BTRFS_SUBVOL_RO,
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_BTRFS_SUBVOL_FLAGS_INVALID = -EINVAL,
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_BTRFS_SUBVOL_FLAGS_ERRNO_MAX = -ERRNO_MAX, /* Ensure the whole errno range fits into this enum */
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} BtrfsSubvolFlags;
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int btrfs_validate_subvolume_name(const char *name);
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int btrfs_subvol_make(int dir_fd, const char *path);
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int btrfs_subvol_make_fallback(int dir_fd, const char *path, mode_t mode);
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