src/shared/btrfs-util.h

/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/

/***
  This file is part of systemd.

  Copyright 2014 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU Lesser General Public License as published by
  the Free Software Foundation; either version 2.1 of the License, or
  (at your option) any later version.

  systemd 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

#pragma once

#include <stdbool.h>
#include <sys/types.h>

#include "time-util.h"

typedef struct BtrfsSubvolInfo {
        uint64_t subvol_id;
        usec_t otime;

        sd_id128_t uuid;
        sd_id128_t parent_uuid;

        bool read_only;
} BtrfsSubvolInfo;

typedef struct BtrfsQuotaInfo {
        uint64_t referred;
        uint64_t exclusive;
        uint64_t referred_max;
        uint64_t exclusive_max;
} BtrfsQuotaInfo;

int btrfs_is_snapshot(int fd);

int btrfs_subvol_make(const char *path);
int btrfs_subvol_make_label(const char *path);
int btrfs_subvol_remove(const char *path);
int btrfs_subvol_snapshot(const char *old_path, const char *new_path, bool read_only, bool fallback_copy);

int btrfs_subvol_set_read_only_fd(int fd, bool b);
int btrfs_subvol_set_read_only(const char *path, bool b);
int btrfs_subvol_get_read_only_fd(int fd);
int btrfs_subvol_get_id_fd(int fd, uint64_t *ret);
int btrfs_subvol_get_info_fd(int fd, BtrfsSubvolInfo *info);
int btrfs_subvol_get_quota_fd(int fd, BtrfsQuotaInfo *quota);

int btrfs_reflink(int infd, int outfd);
int btrfs_clone_range(int infd, uint64_t in_offset, int ofd, uint64_t out_offset, uint64_t sz);

int btrfs_get_block_device(const char *path, dev_t *dev);

int btrfs_defrag_fd(int fd);
int btrfs_defrag(const char *p);