1 files changed, 77 insertions, 0 deletions
diff --git a/lib/geom/journal/geom_journal_ufs.c b/lib/geom/journal/geom_journal_ufs.c
new file mode 100644
index 000000000000..fc81663ec96a
--- /dev/null
+++ b/lib/geom/journal/geom_journal_ufs.c
@@ -0,0 +1,77 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org>
+ * All rights reserved.
+ *
+ * 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/param.h>
+#include <sys/disklabel.h>
+#include <sys/mount.h>
+
+#include <ufs/ufs/dinode.h>
+#include <ufs/ffs/fs.h>
+
+#include <libufs.h>
+#include <libgeom.h>
+#include <core/geom.h>
+#include <misc/subr.h>
+
+#include "geom_journal.h"
+
+static struct fs *
+read_superblock(const char *prov)
+{
+	static struct uufsd disk;
+	struct fs *fs;
+
+	if (ufs_disk_fillout(&disk, prov) == -1)
+		return (NULL);
+	fs = &disk.d_fs;
+	ufs_disk_close(&disk);
+	return (fs);
+}
+
+int
+g_journal_ufs_exists(const char *prov)
+{
+
+	return (read_superblock(prov) != NULL);
+}
+
+int
+g_journal_ufs_using_last_sector(const char *prov)
+{
+	struct fs *fs;
+	off_t psize, fssize;
+
+	fs = read_superblock(prov);
+	if (fs == NULL)
+		return (0);
+	/* Provider size in 512 bytes blocks. */
+	psize = g_get_mediasize(prov) / DEV_BSIZE;
+	/* File system size in 512 bytes blocks. */
+	fssize = fsbtodb(fs, fs->fs_size);
+	return (psize <= fssize);
+}