1 files changed, 76 insertions, 0 deletions
diff --git a/util-linux/volume_id/minix.c b/util-linux/volume_id/minix.c
new file mode 100644
index 000000000..ede23cb24
--- /dev/null
+++ b/util-linux/volume_id/minix.c
@@ -0,0 +1,76 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ *	This library is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU Lesser General Public
+ *	License as published by the Free Software Foundation; either
+ *	version 2.1 of the License, or (at your option) any later version.
+ *
+ *	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.
+ *
+ *	You should have received a copy of the GNU Lesser General Public
+ *	License along with this library; if not, write to the Free Software
+ *	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "volume_id_internal.h"
+
+struct minix_super_block
+{
+	uint16_t	s_ninodes;
+	uint16_t	s_nzones;
+	uint16_t	s_imap_blocks;
+	uint16_t	s_zmap_blocks;
+	uint16_t	s_firstdatazone;
+	uint16_t	s_log_zone_size;
+	uint32_t	s_max_size;
+	uint16_t	s_magic;
+	uint16_t	s_state;
+	uint32_t	s_zones;
+} __attribute__((__packed__));
+
+#define MINIX_SUPERBLOCK_OFFSET			0x400
+
+int volume_id_probe_minix(struct volume_id *id, uint64_t off)
+{
+	struct minix_super_block *ms;
+
+	dbg("probing at offset 0x%llx", (unsigned long long) off);
+
+	ms = volume_id_get_buffer(id, off + MINIX_SUPERBLOCK_OFFSET, 0x200);
+	if (ms == NULL)
+		return -1;
+
+	if (le16_to_cpu(ms->s_magic) == 0x137f) {
+		id->type_version[0] = '1';
+		goto found;
+	}
+
+	if (le16_to_cpu(ms->s_magic) == 0x1387) {
+		id->type_version[0] = '1';
+		goto found;
+	}
+
+	if (le16_to_cpu(ms->s_magic) == 0x2468) {
+		id->type_version[0] = '2';
+		goto found;
+	}
+
+	if (le16_to_cpu(ms->s_magic) == 0x2478) {
+		id->type_version[0] = '2';
+		goto found;
+	}
+
+	return -1;
+
+ found:
+	id->type_version[1] = '\0';
+	volume_id_set_usage(id, VOLUME_ID_FILESYSTEM);
+	id->type = "minix";
+	return 0;
+}