LU-10602 llite: add file heat support

[fs/lustre-release.git] / lustre / utils / liblustreapi_heat.c

diff --git a/lustre/utils/liblustreapi_heat.c b/lustre/utils/liblustreapi_heat.c
new file mode 100644 (file)
index 0000000..b703444
--- /dev/null
+++ b/lustre/utils/liblustreapi_heat.c
@@ -0,0 +1,78 @@
+/*
+ * LGPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * (C) Copyright (c) 2018, DataDirect Networks Inc, all rights reserved.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public License
+ * LGPL version 2.1 or (at your discretion) any later version.
+ * LGPL version 2.1 accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl-2.1.html
+ *
+ * This library 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.
+ *
+ * LGPL HEADER END
+ */
+/*
+ * lustre/utils/liblustreapi_heat.c
+ *
+ * lustreapi library for heat
+ *
+ * Author: Li Xi <lixi@ddn.com>
+ */
+
+#include <lustre/lustreapi.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+
+#include <libcfs/util/ioctl.h>
+#include <lustre/lustreapi.h>
+#include <linux/lustre/lustre_ioctl.h>
+#include "lustreapi_internal.h"
+
+/*
+ * Get heat of a file
+ *
+ * \param fd       File to get heat.
+ * \param heat     Buffer to save heat.
+ *
+ * \retval 0 on success.
+ * \retval -errno on failure.
+ */
+int llapi_heat_get(int fd, struct lu_heat *heat)
+{
+       int rc;
+
+       rc = ioctl(fd, LL_IOC_HEAT_GET, heat);
+       if (rc < 0) {
+               llapi_error(LLAPI_MSG_ERROR, -errno, "cannot get heat");
+               return -errno;
+       }
+       return 0;
+}
+
+/*
+ * Set heat of a file
+ *
+ * \param fd       File to get heat.
+ * \param heat     Buffer to save heat.
+ *
+ * \retval 0 on success.
+ * \retval -errno on failure.
+ */
+int llapi_heat_set(int fd, __u64 flags)
+{
+       int rc;
+
+       rc = ioctl(fd, LL_IOC_HEAT_SET, &flags);
+       if (rc < 0) {
+               llapi_error(LLAPI_MSG_ERROR, -errno, "cannot set heat flags");
+               return -errno;
+       }
+       return 0;
+}