shared: add new btrfs-util.[ch] helpers for doing common btrfs operation

[elogind.git] / src / shared / btrfs-util.h

diff --git a/src/shared/btrfs-util.h b/src/shared/btrfs-util.h
new file mode 100644 (file)
index 0000000..28dbeb4
--- /dev/null
+++ b/src/shared/btrfs-util.h
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+/*-*- 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/>.
+***/
+
+#include <stdbool.h>
+#include <sys/types.h>
+
+int btrfs_is_snapshot(int fd);
+
+int btrfs_subvol_make(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_read_only(const char *path, bool b);
+
+int btrfs_reflink(int infd, int outfd);
+
+int btrfs_get_block_device(const char *path, dev_t *dev);