From: Hannes Reinecke <hare@suse.de>
Date: Sun, 16 Dec 2007 18:22:32 +0000 (+0100)
Subject: volume_id: LVM - add uuid
X-Git-Tag: 174~1775
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=5caa40bea22b9ac07dbe667985d1b8556d8b6b80;hp=9e5920842b0b414e78b04ddd40fb4cf29b0d855c;ds=sidebyside

volume_id: LVM - add uuid
---

diff --git a/extras/volume_id/lib/Makefile b/extras/volume_id/lib/Makefile
index b206854f5..925eff9f9 100644
--- a/extras/volume_id/lib/Makefile
+++ b/extras/volume_id/lib/Makefile
@@ -13,7 +13,7 @@ INSTALL_DATA  = ${INSTALL} -m 644
 INSTALL_LIB = ${INSTALL} -m 755
 
 SHLIB_CUR = 0
-SHLIB_REV = 81
+SHLIB_REV = 82
 SHLIB_AGE = 0
 SHLIB = libvolume_id.so.$(SHLIB_CUR).$(SHLIB_REV).$(SHLIB_AGE)
 
diff --git a/extras/volume_id/lib/linux_raid.c b/extras/volume_id/lib/linux_raid.c
index 3c2e86e42..5e0c4a494 100644
--- a/extras/volume_id/lib/linux_raid.c
+++ b/extras/volume_id/lib/linux_raid.c
@@ -87,7 +87,7 @@ static int volume_id_probe_linux_raid0(struct volume_id *id, uint64_t off, uint6
 			uuid.ints[2] = 0;
 			uuid.ints[3] = 0;
 		}
-		volume_id_set_uuid(id, uuid.bytes, 0, UUID_FOURINT);
+		volume_id_set_uuid(id, uuid.bytes, 0, UUID_MD);
 		snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u.%u",
 			 le32_to_cpu(mdp0->major_version),
 			 le32_to_cpu(mdp0->minor_version),
@@ -103,7 +103,7 @@ static int volume_id_probe_linux_raid0(struct volume_id *id, uint64_t off, uint6
 			uuid.ints[2] = 0;
 			uuid.ints[3] = 0;
 		}
-		volume_id_set_uuid(id, uuid.bytes, 0, UUID_FOURINT);
+		volume_id_set_uuid(id, uuid.bytes, 0, UUID_MD);
 		snprintf(id->type_version, sizeof(id->type_version)-1, "%u.%u.%u",
 			 be32_to_cpu(mdp0->major_version),
 			 be32_to_cpu(mdp0->minor_version),
@@ -134,7 +134,7 @@ static int volume_id_probe_linux_raid1(struct volume_id *id, uint64_t off, uint6
 	if (le32_to_cpu(mdp1->major_version) != 1)
 		return -1;
 
-	volume_id_set_uuid(id, mdp1->set_uuid, 0, UUID_FOURINT);
+	volume_id_set_uuid(id, mdp1->set_uuid, 0, UUID_MD);
 	volume_id_set_label_raw(id, mdp1->set_name, 32);
 	volume_id_set_label_string(id, mdp1->set_name, 32);
 	volume_id_set_usage(id, VOLUME_ID_RAID);
diff --git a/extras/volume_id/lib/lvm.c b/extras/volume_id/lib/lvm.c
index 9c83c5530..7c4f81131 100644
--- a/extras/volume_id/lib/lvm.c
+++ b/extras/volume_id/lib/lvm.c
@@ -38,6 +38,11 @@ struct lvm2_super_block {
 	uint8_t		type[8];
 } PACKED;
 
+struct lvm2_pv_header {
+	uint8_t		id[32];
+	uint64_t	devsize_xl;
+} PACKED;
+
 #define LVM1_SB_OFF			0x400
 #define LVM1_MAGIC			"HM"
 
@@ -71,6 +76,7 @@ int volume_id_probe_lvm2(struct volume_id *id, uint64_t off, uint64_t size)
 	const uint8_t *buf;
 	unsigned int soff;
 	struct lvm2_super_block *lvm;
+	struct lvm2_pv_header *pvhdr;
 
 	dbg("probing at offset 0x%llx", (unsigned long long) off);
 
@@ -89,8 +95,13 @@ int volume_id_probe_lvm2(struct volume_id *id, uint64_t off, uint64_t size)
 	return -1;
 
 found:
+	dbg("found at offset 0x%x (pv hdr offset 0x%x)",
+	    soff, cpu_to_le32(lvm->offset_xl));
+	soff += cpu_to_le32(lvm->offset_xl);
+	pvhdr = (struct lvm2_pv_header *) &buf[soff];
 	memcpy(id->type_version, lvm->type, 8);
 	volume_id_set_usage(id, VOLUME_ID_RAID);
+	volume_id_set_uuid(id, pvhdr->id, 0, UUID_LVM);
 	id->type = "LVM2_member";
 
 	return 0;
diff --git a/extras/volume_id/lib/util.c b/extras/volume_id/lib/util.c
index 395e81bbf..c094661cc 100644
--- a/extras/volume_id/lib/util.c
+++ b/extras/volume_id/lib/util.c
@@ -274,9 +274,12 @@ void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, size_t len, en
 	case UUID_DCE:
 		count = 16;
 		break;
-	case UUID_FOURINT:
+	case UUID_MD:
 		count = 35;
 		break;
+	case UUID_LVM:
+		count = 32;
+		break;
 	}
 	memcpy(id->uuid_raw, buf, count);
 	id->uuid_raw_len = count;
@@ -324,7 +327,7 @@ set:
 		memcpy(id->uuid, buf, count);
 		id->uuid[count] = '\0';
 		break;
-	case UUID_FOURINT:
+	case UUID_MD:
 		sprintf(id->uuid,
 			"%02x%02x%02x%02x:%02x%02x%02x%02x:%02x%02x%02x%02x:%02x%02x%02x%02x",
 			buf[0], buf[1], buf[2], buf[3],
@@ -332,6 +335,17 @@ set:
 			buf[8], buf[9], buf[10], buf[11],
 			buf[12], buf[13], buf[14],buf[15]);
 		break;
+	case UUID_LVM:
+		sprintf(id->uuid,
+			"%c%c%c%c%c%c-%c%c%c%c-%c%c%c%c-%c%c%c%c-%c%c%c%c-%c%c%c%c-%c%c%c%c%c%c",
+			buf[0], buf[1], buf[2], buf[3], buf[4], buf[5],
+			buf[6], buf[7], buf[8], buf[9],
+			buf[10], buf[11], buf[12], buf[13],
+			buf[14], buf[15], buf[16], buf[17],
+			buf[18], buf[19], buf[20], buf[21],
+			buf[22], buf[23], buf[24], buf[25],
+			buf[26], buf[27], buf[28], buf[29], buf[30], buf[31]);
+		break;
 	}
 }
 
diff --git a/extras/volume_id/lib/util.h b/extras/volume_id/lib/util.h
index 14a76c8fd..e3c766d4a 100644
--- a/extras/volume_id/lib/util.h
+++ b/extras/volume_id/lib/util.h
@@ -71,7 +71,8 @@ enum uuid_format {
 	UUID_DOS,
 	UUID_64BIT_LE,
 	UUID_64BIT_BE,
-	UUID_FOURINT,
+	UUID_MD,
+	UUID_LVM,
 };
 
 enum endian {