1 files changed, 73 insertions, 0 deletions
diff --git a/usr.sbin/fstyp/zfs.c b/usr.sbin/fstyp/zfs.c
new file mode 100644
index 0000000..9d91db6
--- /dev/null
+++ b/usr.sbin/fstyp/zfs.c
@@ -0,0 +1,73 @@
+/*-
+ * Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org>
+ * All rights reserved.
+ *
+ * This software was developed by Edward Tomasz Napierala under sponsorship
+ * from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/types.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <libnvpair.h>
+#include <sys/vdev_impl.h>
+
+#include "fstyp.h"
+
+int
+fstyp_zfs(FILE *fp, char *label, size_t labelsize)
+{
+	vdev_label_t *zpool_ptr = NULL;
+	vdev_label_t zpool_label;
+	char *buf = zpool_label.vl_vdev_phys.vp_nvlist;
+	char *zpool_name = NULL;
+	size_t buflen = sizeof (zpool_label.vl_vdev_phys.vp_nvlist);
+	nvlist_t *config = NULL;
+
+	zpool_ptr = (vdev_label_t *)read_buf(fp, 0, sizeof(zpool_label));
+	if (zpool_ptr == NULL)
+		return (1);
+	zpool_label = *zpool_ptr;
+	if (nvlist_unpack(buf, buflen, &config, 0) != 0)
+		goto zfserr;
+	if (nvlist_lookup_string(config, "name", &zpool_name) != 0)
+		goto zfserr;
+	strlcpy(label, zpool_name, labelsize);
+	nvlist_free(config);
+	free(zpool_ptr);
+	return (0);
+
+zfserr:
+	nvlist_free(config);
+	free(zpool_ptr);
+
+	return (1);
+}