Remove st->text_version in favour of info->text_version

I want the metadata handler to have more control over the 'version',
particularly for arrays which are members of containers.
So discard st->text_version and instead use info->text_version
which getinfo_super can initialise.

Assemble.c

@@ -848,7 +848,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
 		struct mdinfo *sra;
 		if (st->ss->external) {
 			char ver[100];
-			strcat(strcpy(ver, "external:"), st->ss->text_version);
+			strcat(strcpy(ver, "external:"), info.text_version);
 			sra = sysfs_read(mdfd, 0, 0);
 			if ((vers % 100) < 2 ||
 			    sra == NULL ||

Create.c

@@ -512,6 +512,8 @@ int Create(struct supertype *st, char *mddev, int mdfd,
 	if (!st->ss->init_super(st, &info.array, size, name, homehost, uuid))
 		return 1;
 
+	st->ss->getinfo_super(st, &info);
+
 	if (bitmap_file && vers < 9003) {
 		major_num = BITMAP_MAJOR_HOSTENDIAN;
 #ifdef __BIG_ENDIAN
@@ -541,7 +543,8 @@ int Create(struct supertype *st, char *mddev, int mdfd,
 		char ver[100];
 		if (st->ss->external == 1)
 			/* container */
-			strcat(strcpy(ver, "external:"), st->ss->text_version);
+			strcat(strcpy(ver, "external:"),
+			       info.text_version);
 		else {
 			/* member */
 			sprintf(ver, "external:/%s/%d",

mdadm.h

@@ -433,7 +433,6 @@ extern struct superswitch {
 
 
 	int major;
-	char *text_version;
 	int swapuuid; /* true if uuid is bigending rather than hostendian */
 	int external;
 } super0, super1, super_ddf, super_ddf_bvd, super_ddf_svd, *superlist[];

super-ddf.c

@@ -1212,6 +1212,8 @@ static void getinfo_super_ddf(struct supertype *st, struct mdinfo *info)
 
 	info->reshape_active = 0;
 
+	strcpy(info->text_version, "ddf");
+
 //	uuid_from_super_ddf(info->uuid, sbv);
 
 //	info->name[] ?? ;
@@ -1259,6 +1261,10 @@ static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info)
 
 	uuid_from_super_ddf(st, info->uuid);
 
+	sprintf(info->text_version, "/%s/%d",
+		devnum2devname(st->container_dev),
+		info->container_member);
+
 //	info->name[] ?? ;
 }
 
@@ -2680,7 +2686,6 @@ struct superswitch super_ddf = {
 	.major		= 1000,
 	.swapuuid	= 0,
 	.external	= 1,
-	.text_version	= "ddf",
 
 /* for mdmon */
 	.open_new       = ddf_open_new,
@@ -2713,7 +2718,6 @@ struct superswitch super_ddf_container = {
 	.major		= 1000,
 	.swapuuid	= 0,
 	.external	= 1,
-	.text_version	= "ddf",
 };
 
 struct superswitch super_ddf_bvd = {
@@ -2737,7 +2741,6 @@ struct superswitch super_ddf_bvd = {
 	.major		= 1001,
 	.swapuuid	= 0,
 	.external	= 2,
-	.text_version	= "ddf",
 };
 
 struct superswitch super_ddf_svd = {
@@ -2756,5 +2759,4 @@ struct superswitch super_ddf_svd = {
 	.major		= 1002,
 	.swapuuid	= 0,
 	.external	= 2,
-	.text_version	= "ddf",
 };

super-intel.c

@@ -443,11 +443,17 @@ static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info)
 	info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0;
 	info->disk.state |= s & USABLE_DISK ? (1 << MD_DISK_SYNC) : 0;
 	info->reshape_active = 0;
+
+	strcpy(info->text_version, "imsm");
 }
 
 static void getinfo_super_imsm_raid(struct supertype *st, struct mdinfo *info)
 {
 	printf("%s\n", __FUNCTION__);
+
+	sprintf(info->text_version, "/%s/%d",
+		devnum2devname(st->container_dev),
+		info->container_member); // FIXME is this even set here?
 }
 
 static int update_super_imsm(struct supertype *st, struct mdinfo *info,
@@ -1063,6 +1069,10 @@ static struct mdinfo *container_content_imsm(struct supertype *st)
 		strncpy(this->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN);
 		this->name[MAX_RAID_SERIAL_LEN] = 0;
 
+		sprintf(this->text_version, "/%s/%d",
+			devnum2devname(st->container_dev),
+			this->container_member);
+
 		memset(this->uuid, 0, sizeof(this->uuid));
 
 		sz = __le32_to_cpu(dev->size_high);
@@ -1352,7 +1362,6 @@ struct superswitch super_imsm = {
 	.major		= 2000,
 	.swapuuid	= 0,
 	.external	= 1,
-	.text_version	= "imsm",
 
 /* for mdmon */
 	.open_new	= imsm_open_new,
@@ -1389,7 +1398,6 @@ struct superswitch super_imsm_container = {
 	.major		= 2000,
 	.swapuuid	= 0,
 	.external	= 1,
-	.text_version	= "imsm",
 };
 
 struct superswitch super_imsm_raid = {
@@ -1409,5 +1417,4 @@ struct superswitch super_imsm_raid = {
 	.major		= 2001,
 	.swapuuid	= 0,
 	.external	= 2,
-	.text_version	= "imsm",
 };

util.c

@@ -834,30 +834,19 @@ struct supertype *super_by_fd(int fd)
 #endif /* !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO) */
 
 
-struct supertype *dup_super(struct supertype *st)
+struct supertype *dup_super(struct supertype *orig)
 {
-	struct supertype *stnew = NULL;
-	char *verstr = NULL;
-	char version[20];
-	int i;
+	struct supertype *st;
 
+	st = malloc(sizeof(*st));
 	if (!st)
 		return st;
-
-	if (st->ss->text_version)
-		strcpy(version, st->ss->text_version);
-	else if (st->minor_version == -1)
-		sprintf(version, "%d", st->ss->major);
-	else
-		sprintf(version, "%d.%d", st->ss->major, st->minor_version);
-	verstr = version;
-
-	for (i = 0; stnew == NULL && superlist[i] ; i++)
-		stnew = superlist[i]->match_metadata_desc(verstr);
-
-	if (stnew)
-		stnew->sb = NULL;
-	return stnew;
+	st->ss = orig->ss;
+	st->max_devs = orig->max_devs;
+	st->minor_version = orig->minor_version;
+	st->sb = NULL;
+	st->info = NULL;
+	return st;
 }
 
 struct supertype *guess_super(int fd)