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-rw-r--r--src/shared/machine-pool.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/src/shared/machine-pool.c b/src/shared/machine-pool.c
new file mode 100644
index 0000000..b372de4
--- /dev/null
+++ b/src/shared/machine-pool.c
@@ -0,0 +1,51 @@
+/* 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;
+}