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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include "btrfs-util.h"
#include "label-util.h"
#include "machine-pool.h"
#include "missing_magic.h"
#include "stat-util.h"
static int check_btrfs(void) {
struct statfs sfs;
if (statfs("/var/lib/machines", &sfs) < 0) {
if (errno != ENOENT)
return -errno;
if (statfs("/var/lib", &sfs) < 0)
return -errno;
}
return F_TYPE_EQUAL(sfs.f_type, BTRFS_SUPER_MAGIC);
}
int setup_machine_directory(sd_bus_error *error, bool use_btrfs_subvol, bool use_btrfs_quota) {
int r;
r = check_btrfs();
if (r < 0)
return sd_bus_error_set_errnof(error, r, "Failed to determine whether /var/lib/machines is located on btrfs: %m");
if (r == 0)
return 0;
if (!use_btrfs_subvol)
return 0;
(void) btrfs_subvol_make_label("/var/lib/machines");
if (!use_btrfs_quota)
return 0;
r = btrfs_quota_enable("/var/lib/machines", true);
if (r < 0)
log_warning_errno(r, "Failed to enable quota for /var/lib/machines, ignoring: %m");
r = btrfs_subvol_auto_qgroup("/var/lib/machines", 0, true);
if (r < 0)
log_warning_errno(r, "Failed to set up default quota hierarchy for /var/lib/machines, ignoring: %m");
return 0;
}
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