1 files changed, 80 insertions, 0 deletions
diff --git a/libparted/fs/jfs/jfs.c b/libparted/fs/jfs/jfs.c
new file mode 100644
index 0000000..f00bd9f
--- /dev/null
+++ b/libparted/fs/jfs/jfs.c
@@ -0,0 +1,80 @@
+/*
+    libparted - a library for manipulating disk partitions
+    Copyright (C) 2001, 2007, 2009-2014, 2019-2023 Free Software Foundation,
+    Inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <config.h>
+
+#include <parted/parted.h>
+#include <parted/endian.h>
+
+#define _JFS_UTILITY
+#include "jfs_types.h"
+#include "jfs_superblock.h"
+
+#define JFS_SUPER_OFFSET 32768
+
+#if ENABLE_NLS
+#  include <libintl.h>
+#  define _(String) dgettext (PACKAGE, String)
+#else
+#  define _(String) (String)
+#endif /* ENABLE_NLS */
+
+static PedGeometry*
+jfs_probe (PedGeometry* geom)
+{
+	struct superblock *sb = alloca (geom->dev->sector_size);
+
+	if (geom->length * geom->dev->sector_size < JFS_SUPER_OFFSET)
+		return NULL;
+	if (!ped_geometry_read (geom, sb, JFS_SUPER_OFFSET / geom->dev->sector_size, 1))
+		return NULL;
+
+	if (strncmp (sb->s_magic, JFS_MAGIC, 4) == 0) {
+		PedSector block_size = PED_LE32_TO_CPU (sb->s_pbsize);
+		PedSector block_count = PED_LE64_TO_CPU (sb->s_size);
+		/* apparently jfs is retarded and always claims 512 byte
+		   sectors, with the block count as a multiple of that */
+		return ped_geometry_new (geom->dev, geom->start,
+					 block_size * block_count / geom->dev->sector_size);
+	} else {
+		return NULL;
+	}
+}
+
+static PedFileSystemOps jfs_ops = {
+	probe:		jfs_probe,
+};
+
+static PedFileSystemType jfs_type = {
+	next:	NULL,
+	ops:	&jfs_ops,
+	name:	"jfs",
+};
+
+void
+ped_file_system_jfs_init ()
+{
+	ped_file_system_type_register (&jfs_type);
+}
+
+void
+ped_file_system_jfs_done ()
+{
+	ped_file_system_type_unregister (&jfs_type);
+}