/*-*- 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 <fcntl.h> #include "btrfs-util.h" #include "fd-util.h" #include "fileio.h" #include "log.h" #include "parse-util.h" #include "string-util.h" #include "util.h" int main(int argc, char *argv[]) { BtrfsQuotaInfo quota; int r, fd; fd = open("/", O_RDONLY|O_CLOEXEC|O_DIRECTORY); if (fd < 0) log_error_errno(errno, "Failed to open root directory: %m"); else { char ts[FORMAT_TIMESTAMP_MAX], bs[FORMAT_BYTES_MAX]; BtrfsSubvolInfo info; r = btrfs_subvol_get_info_fd(fd, 0, &info); if (r < 0) log_error_errno(r, "Failed to get subvolume info: %m"); else { log_info("otime: %s", format_timestamp(ts, sizeof(ts), info.otime)); log_info("read-only (search): %s", yes_no(info.read_only)); } r = btrfs_qgroup_get_quota_fd(fd, 0, "a); if (r < 0) log_error_errno(r, "Failed to get quota info: %m"); else { log_info("referenced: %s", strna(format_bytes(bs, sizeof(bs), quota.referenced))); log_info("exclusive: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive))); log_info("referenced_max: %s", strna(format_bytes(bs, sizeof(bs), quota.referenced_max))); log_info("exclusive_max: %s", strna(format_bytes(bs, sizeof(bs), quota.exclusive_max))); } r = btrfs_subvol_get_read_only_fd(fd); if (r < 0) log_error_errno(r, "Failed to get read only flag: %m"); else log_info("read-only (ioctl): %s", yes_no(r)); safe_close(fd); } r = btrfs_subvol_make("/xxxtest"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); r = write_string_file("/xxxtest/afile", "ljsadhfljasdkfhlkjdsfha", WRITE_STRING_FILE_CREATE); if (r < 0) log_error_errno(r, "Failed to write file: %m"); r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest2", 0); if (r < 0) log_error_errno(r, "Failed to make snapshot: %m"); r = btrfs_subvol_snapshot("/xxxtest", "/xxxtest3", BTRFS_SNAPSHOT_READ_ONLY); if (r < 0) log_error_errno(r, "Failed to make snapshot: %m"); r = btrfs_subvol_remove("/xxxtest", BTRFS_REMOVE_QUOTA); if (r < 0) log_error_errno(r, "Failed to remove subvolume: %m"); r = btrfs_subvol_remove("/xxxtest2", BTRFS_REMOVE_QUOTA); if (r < 0) log_error_errno(r, "Failed to remove subvolume: %m"); r = btrfs_subvol_remove("/xxxtest3", BTRFS_REMOVE_QUOTA); if (r < 0) log_error_errno(r, "Failed to remove subvolume: %m"); r = btrfs_subvol_snapshot("/etc", "/etc2", BTRFS_SNAPSHOT_READ_ONLY|BTRFS_SNAPSHOT_FALLBACK_COPY); if (r < 0) log_error_errno(r, "Failed to make snapshot: %m"); r = btrfs_subvol_remove("/etc2", BTRFS_REMOVE_QUOTA); if (r < 0) log_error_errno(r, "Failed to remove subvolume: %m"); r = btrfs_subvol_make("/xxxrectest"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); r = btrfs_subvol_make("/xxxrectest/xxxrectest2"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); r = btrfs_subvol_make("/xxxrectest/xxxrectest3"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); r = btrfs_subvol_make("/xxxrectest/xxxrectest3/sub"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); if (mkdir("/xxxrectest/dir", 0755) < 0) log_error_errno(errno, "Failed to make directory: %m"); r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); if (mkdir("/xxxrectest/dir/xxxrectest4/dir", 0755) < 0) log_error_errno(errno, "Failed to make directory: %m"); r = btrfs_subvol_make("/xxxrectest/dir/xxxrectest4/dir/xxxrectest5"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); if (mkdir("/xxxrectest/mnt", 0755) < 0) log_error_errno(errno, "Failed to make directory: %m"); r = btrfs_subvol_snapshot("/xxxrectest", "/xxxrectest2", BTRFS_SNAPSHOT_RECURSIVE); if (r < 0) log_error_errno(r, "Failed to snapshot subvolume: %m"); r = btrfs_subvol_remove("/xxxrectest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE); if (r < 0) log_error_errno(r, "Failed to recursively remove subvolume: %m"); r = btrfs_subvol_remove("/xxxrectest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE); if (r < 0) log_error_errno(r, "Failed to recursively remove subvolume: %m"); r = btrfs_subvol_make("/xxxquotatest"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); r = btrfs_subvol_auto_qgroup("/xxxquotatest", 0, true); if (r < 0) log_error_errno(r, "Failed to set up auto qgroup: %m"); r = btrfs_subvol_make("/xxxquotatest/beneath"); if (r < 0) log_error_errno(r, "Failed to make subvolume: %m"); r = btrfs_subvol_auto_qgroup("/xxxquotatest/beneath", 0, false); if (r < 0) log_error_errno(r, "Failed to set up auto qgroup: %m"); r = btrfs_qgroup_set_limit("/xxxquotatest/beneath", 0, 4ULL * 1024 * 1024 * 1024); if (r < 0) log_error_errno(r, "Failed to set up quota limit: %m"); r = btrfs_subvol_set_subtree_quota_limit("/xxxquotatest", 0, 5ULL * 1024 * 1024 * 1024); if (r < 0) log_error_errno(r, "Failed to set up quota limit: %m"); r = btrfs_subvol_snapshot("/xxxquotatest", "/xxxquotatest2", BTRFS_SNAPSHOT_RECURSIVE|BTRFS_SNAPSHOT_QUOTA); if (r < 0) log_error_errno(r, "Failed to setup snapshot: %m"); r = btrfs_qgroup_get_quota("/xxxquotatest2/beneath", 0, "a); if (r < 0) log_error_errno(r, "Failed to query quota: %m"); assert_se(quota.referenced_max == 4ULL * 1024 * 1024 * 1024); r = btrfs_subvol_get_subtree_quota("/xxxquotatest2", 0, "a); if (r < 0) log_error_errno(r, "Failed to query quota: %m"); assert_se(quota.referenced_max == 5ULL * 1024 * 1024 * 1024); r = btrfs_subvol_remove("/xxxquotatest", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE); if (r < 0) log_error_errno(r, "Failed remove subvolume: %m"); r = btrfs_subvol_remove("/xxxquotatest2", BTRFS_REMOVE_QUOTA|BTRFS_REMOVE_RECURSIVE); if (r < 0) log_error_errno(r, "Failed remove subvolume: %m"); return 0; }