1 files changed, 117 insertions, 0 deletions
diff --git a/cmds-quota.c b/cmds-quota.c
new file mode 100644
index 00000000..cf9ad976
--- /dev/null
+++ b/cmds-quota.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2012 STRATO.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License v2 as published by the Free Software Foundation.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 021110-1307, USA.
+ */
+
+#include <sys/ioctl.h>
+#include <unistd.h>
+
+#include "ctree.h"
+#include "ioctl.h"
+
+#include "commands.h"
+
+static const char * const quota_cmd_group_usage[] = {
+	"btrfs quota <command> [options] <path>",
+	NULL
+};
+
+int quota_ctl(int cmd, int argc, char **argv)
+{
+	int ret = 0;
+	int fd;
+	int e;
+	char *path = argv[1];
+	struct btrfs_ioctl_quota_ctl_args args;
+
+	if (check_argc_exact(argc, 2))
+		return -1;
+
+	memset(&args, 0, sizeof(args));
+	args.cmd = cmd;
+
+	fd = open_file_or_dir(path);
+	if (fd < 0) {
+		fprintf(stderr, "ERROR: can't access '%s'\n", path);
+		return 12;
+	}
+
+	ret = ioctl(fd, BTRFS_IOC_QUOTA_CTL, &args);
+	e = errno;
+	close(fd);
+	if (ret < 0) {
+		fprintf(stderr, "ERROR: quota command failed: %s\n",
+			strerror(e));
+		return 30;
+	}
+	return 0;
+}
+
+static const char * const cmd_quota_enable_usage[] = {
+	"btrfs quota enable <path>",
+	"Enable subvolume quota support for a filesystem.",
+	NULL
+};
+
+static int cmd_quota_enable(int argc, char **argv)
+{
+	int ret = quota_ctl(BTRFS_QUOTA_CTL_ENABLE, argc, argv);
+	if (ret < 0)
+		usage(cmd_quota_enable_usage);
+	return ret;
+}
+
+static const char * const cmd_quota_disable_usage[] = {
+	"btrfs quota disable <path>",
+	"Disable subvolume quota support for a filesystem.",
+	NULL
+};
+
+static int cmd_quota_disable(int argc, char **argv)
+{
+	int ret = quota_ctl(BTRFS_QUOTA_CTL_DISABLE, argc, argv);
+	if (ret < 0)
+		usage(cmd_quota_disable_usage);
+	return ret;
+}
+
+static const char * const cmd_quota_rescan_usage[] = {
+	"btrfs quota rescan <path>",
+	"Rescan the subvolume for a changed quota setting.",
+	NULL
+};
+
+static int cmd_quota_rescan(int argc, char **argv)
+{
+	int ret = quota_ctl(BTRFS_QUOTA_CTL_RESCAN, argc, argv);
+	if (ret < 0)
+		usage(cmd_quota_rescan_usage);
+	return ret;
+}
+
+const struct cmd_group quota_cmd_group = {
+	quota_cmd_group_usage, NULL, {
+		{ "enable", cmd_quota_enable, cmd_quota_enable_usage, NULL, 0 },
+		{ "disable", cmd_quota_disable, cmd_quota_disable_usage, 0, 0 },
+		{ "rescan", cmd_quota_rescan, cmd_quota_rescan_usage, NULL, 0 },
+		{ 0, 0, 0, 0, 0 }
+	}
+};
+
+int cmd_quota(int argc, char **argv)
+{
+	return handle_command_group(&quota_cmd_group, argc, argv);
+}