support for mount by label (not yet tested)

Also adds findfs applet. Closes bug 1143.

1 files changed, 125 insertions, 0 deletions

diff --git a/util-linux/volume_id/mac.c b/util-linux/volume_id/mac.c
new file mode 100644
index 000000000..94a99bee0
--- /dev/null
+++ b/util-linux/volume_id/mac.c
@@ -0,0 +1,125 @@
+/*
+ * volume_id - reads filesystem label and uuid
+ *
+ * Copyright (C) 2004 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 mac_driver_desc {
+	uint8_t		signature[2];
+	uint16_t	block_size;
+	uint32_t	block_count;
+} __attribute__((__packed__));
+
+struct mac_partition {
+	uint8_t		signature[2];
+	uint16_t	res1;
+	uint32_t	map_count;
+	uint32_t	start_block;
+	uint32_t	block_count;
+	uint8_t		name[32];
+	uint8_t		type[32];
+} __attribute__((__packed__));
+
+int volume_id_probe_mac_partition_map(struct volume_id *id, uint64_t off)
+{
+	const uint8_t *buf;
+	struct mac_driver_desc *driver;
+	struct mac_partition *part;
+
+	dbg("probing at offset 0x%llx", (unsigned long long) off);
+
+	buf = volume_id_get_buffer(id, off, 0x200);
+	if (buf == NULL)
+		return -1;
+
+	part = (struct mac_partition *) buf;
+	if ((memcmp(part->signature, "PM", 2) == 0) &&
+	    (memcmp(part->type, "Apple_partition_map", 19) == 0)) {
+		/* linux creates an own subdevice for the map
+		 * just return the type if the drive header is missing */
+		volume_id_set_usage(id, VOLUME_ID_PARTITIONTABLE);
+		id->type = "mac_partition_map";
+		return 0;
+	}
+
+	driver = (struct mac_driver_desc *) buf;
+	if (memcmp(driver->signature, "ER", 2) == 0) {
+		/* we are on a main device, like a CD
+		 * just try to probe the first partition from the map */
+		unsigned bsize = be16_to_cpu(driver->block_size);
+		int part_count;
+		int i;
+
+		/* get first entry of partition table */
+		buf = volume_id_get_buffer(id, off +  bsize, 0x200);
+		if (buf == NULL)
+			return -1;
+
+		part = (struct mac_partition *) buf;
+		if (memcmp(part->signature, "PM", 2) != 0)
+			return -1;
+
+		part_count = be32_to_cpu(part->map_count);
+		dbg("expecting %d partition entries", part_count);
+
+		if (id->partitions != NULL)
+			free(id->partitions);
+		id->partitions =
+			malloc(part_count * sizeof(struct volume_id_partition));
+		if (id->partitions == NULL)
+			return -1;
+		memset(id->partitions, 0x00, sizeof(struct volume_id_partition));
+
+		id->partition_count = part_count;
+
+		for (i = 0; i < part_count; i++) {
+			uint64_t poff;
+			uint64_t plen;
+
+			buf = volume_id_get_buffer(id, off + ((i+1) * bsize), 0x200);
+			if (buf == NULL)
+				return -1;
+
+			part = (struct mac_partition *) buf;
+			if (memcmp(part->signature, "PM", 2) != 0)
+				return -1;
+
+			poff = be32_to_cpu(part->start_block) * bsize;
+			plen = be32_to_cpu(part->block_count) * bsize;
+			dbg("found '%s' partition entry at 0x%llx, len 0x%llx",
+			    part->type, (unsigned long long) poff, (unsigned long long) plen);
+
+			id->partitions[i].off = poff;
+			id->partitions[i].len = plen;
+
+			if (memcmp(part->type, "Apple_Free", 10) == 0) {
+				volume_id_set_usage_part(&id->partitions[i], VOLUME_ID_UNUSED);
+			} else if (memcmp(part->type, "Apple_partition_map", 19) == 0) {
+				volume_id_set_usage_part(&id->partitions[i], VOLUME_ID_PARTITIONTABLE);
+			} else {
+				volume_id_set_usage_part(&id->partitions[i], VOLUME_ID_UNPROBED);
+			}
+		}
+		volume_id_set_usage(id, VOLUME_ID_PARTITIONTABLE);
+		id->type = "mac_partition_map";
+		return 0;
+	}
+
+	return -1;
+}