Assorted Fixes for multiple bugs.

Assemble would crash, or just not work.
A few other problem found by a new test-suite.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>

Assemble.c

@@ -219,7 +219,7 @@ int Assemble(struct supertype *st, char *mddev, int mdfd,
 		}
 
 		if (ident->uuid_set &&
-		    (!super || same_uuid(info.uuid, ident->uuid)==0)) {
+		    (!super || same_uuid(info.uuid, ident->uuid, tst->ss->swapuuid)==0)) {
 			if (inargv || verbose)
 				fprintf(stderr, Name ": %s has wrong uuid.\n",
 					devname);

ChangeLog

@@ -1,4 +1,7 @@
-Changes Prior to this release
+Changes Prior to 2.0-devel-3 release
+    -   Assorted fixes for multiple bugs...
+	
+Changes Prior to 1.12.0 release
   Several of these are backported from the Debian package
     -   Don't use 'lstat' to check for blockdevices, use stat.
     -   Document --size=max option for --grow
@@ -32,7 +35,7 @@ Changes Prior to 1.10.0 release
     -   Open sub-devices with O_EXCL to detect if already in use
     -   Make sure superblock updates are flushed directly to disk.
 	
-Changes Prior to 2.0-deve-1 release
+Changes Prior to 2.0-devel-1 release
     -   Support for version-1 superblock.  See --metadata option.
     -   Support for bitmap based intent logging.
     -   Minor fixes.

Manage.c

@@ -196,7 +196,7 @@ int Manage_subdevs(char *devname, int fd,
 			return 1;
 		case 'a':
 			/* add the device - hot or cold */
-			/* Make sure it isn' in use (in 2.6 or later) */
+			/* Make sure it isn't in use (in 2.6 or later) */
 			tfd = open(dv->devname, O_RDONLY|O_EXCL);
 			if (tfd < 0) {
 				fprintf(stderr, Name ": Cannot open %s: %s\n",
@@ -228,7 +228,7 @@ int Manage_subdevs(char *devname, int fd,
 					array.major_version, array.minor_version);
 				return 1;
 			}
-			for (j=0; j<array.raid_disks+array.spare_disks+ array.failed_disks; j++) {
+			for (j=0; j<st->max_devs; j++) {
 				char *dev;
 				int dfd;
 				disc.number = j;
@@ -253,7 +253,7 @@ int Manage_subdevs(char *devname, int fd,
 				fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n");
 				return 1;
 			}
-			for (j=0; j<array.nr_disks; j++) {
+			for (j=0; j< st->max_devs; j++) {
 				disc.number = j;
 				if (ioctl(fd, GET_DISK_INFO, &disc))
 					break;
@@ -266,11 +266,12 @@ int Manage_subdevs(char *devname, int fd,
 			disc.minor = minor(stb.st_rdev);
 			disc.number =j;
 			disc.state = 0;
+			st->ss->add_to_super(dsuper, &disc);
 			if (st->ss->write_init_super(st, dsuper, &disc, dv->devname))
 				return 1;
 			if (ioctl(fd,ADD_NEW_DISK, &disc)) {
-				fprintf(stderr, Name ": add new device failed for %s: %s\n",
-					dv->devname, strerror(errno));
+				fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
+					dv->devname, j, strerror(errno));
 				return 1;
 			}
 			fprintf(stderr, Name ": added %s\n", dv->devname);

bitmap.c

@@ -243,8 +243,8 @@ int ExamineBitmap(char *filename, int brief, struct supertype *st)
 	printf("           State : %s\n", bitmap_state(sb->state));
 	printf("       Chunksize : %s\n", human_chunksize(sb->chunksize));
 	printf("          Daemon : %ds flush period\n", sb->daemon_sleep);
-	printf("       Sync Size : %llu%s\n", sb->sync_size,
-					human_size(sb->sync_size * 1024));
+	printf("       Sync Size : %llu%s\n", sb->sync_size/2,
+					human_size(sb->sync_size * 512));
 	if (brief)
 		goto free_info;
 	printf("          Bitmap : %llu bits (chunks), %llu dirty (%2.1f%%)\n",

config.c

@@ -275,6 +275,8 @@ void arrayline(char *line)
 	mis.spare_group = NULL;
 	mis.autof = 0;
 	mis.next = NULL;
+	mis.st = NULL;
+	mis.bitmap_fd = -1;
 
 	for (w=dl_next(line); w!=line; w=dl_next(w)) {
 		if (w[0] == '/') {
@@ -293,7 +295,7 @@ void arrayline(char *line)
 					fprintf(stderr, Name ": bad uuid: %s\n", w);
 			}
 		} else if (strncasecmp(w, "super-minor=", 12)==0 ) {
-			if (mis.super_minor >= 0)
+			if (mis.super_minor != UnSet)
 				fprintf(stderr, Name ": only specify super-minor once, %s ignored.\n",
 					w);
 			else {

mdadm.h

@@ -190,6 +190,7 @@ extern struct superswitch {
 	void (*locate_bitmap)(struct supertype *st, int fd);
 	int (*write_bitmap)(struct supertype *st, int fd, void *sbv);
 	int major;
+	int swapuuid; /* true if uuid is bigending rather than hostendian */
 } super0, super1, *superlist[];
 
 struct supertype {
@@ -281,7 +282,7 @@ extern char *conf_word(FILE *file, int allow_key);
 extern void free_line(char *line);
 extern int match_oneof(char *devices, char *devname);
 extern void uuid_from_super(int uuid[4], mdp_super_t *super);
-extern int same_uuid(int a[4], int b[4]);
+extern int same_uuid(int a[4], int b[4], int swapuuid);
 /* extern int compare_super(mdp_super_t *first, mdp_super_t *second);*/
 extern unsigned long calc_csum(void *super, int bytes);
 extern int enough(int level, int raid_disks, int avail_disks);

super0.c

@@ -500,7 +500,7 @@ static int compare_super0(void **firstp, void *secondv)
 
 	uuid_from_super0(uuid1, first);
 	uuid_from_super0(uuid2, second);
-	if (!same_uuid(uuid1, uuid2))
+	if (!same_uuid(uuid1, uuid2, 0))
 		return 2;
 	if (first->major_version != second->major_version ||
 	    first->minor_version != second->minor_version ||
@@ -638,7 +638,7 @@ static int add_internal_bitmap0(void *sbv, int chunk, int delay, unsigned long l
 	bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MD_SB_BYTES);
 
 	
-	min_chunk = 1024;
+	min_chunk = 4096; /* sub-page chunks don't work yet.. */
 	while (bits > max_bits) {
 		min_chunk *= 2;
 		bits = (bits+1)/2;
@@ -767,4 +767,5 @@ struct superswitch super0 = {
 	.locate_bitmap = locate_bitmap0,
 	.write_bitmap = write_bitmap0,
 	.major = 0,
+	.swapuuid = 0,
 };

super1.c

@@ -28,7 +28,7 @@
  */
 
 #include "mdadm.h"
-
+#include <endian.h>
 #include "asm/byteorder.h"
 /*
  * The version-1 superblock :
@@ -804,4 +804,9 @@ struct superswitch super1 = {
 	.match_metadata_desc = match_metadata_desc1,
 	.avail_size = avail_size1,
 	.major = 1,
+#if __BYTE_ORDER == BIG_ENDIAN
+	.swapuuid = 0,
+#else
+	.swapuuid = 1,
+#endif
 };

util.c

@@ -140,14 +140,32 @@ int enough(int level, int raid_disks, int avail_disks)
 	}
 }
 
-int same_uuid(int a[4], int b[4])
+int same_uuid(int a[4], int b[4], int swapuuid)
 {
-    if (a[0]==b[0] &&
-	a[1]==b[1] &&
-	a[2]==b[2] &&
-	a[3]==b[3])
-	return 1;
-    return 0;
+	if (swapuuid) {
+		/* parse uuids are hostendian.
+		 * uuid's from some superblocks are big-ending
+		 * if there is a difference, we need to swap.. 
+		 */
+		unsigned char *ac = (unsigned char *)a;
+		unsigned char *bc = (unsigned char *)b;
+		int i;
+		for (i=0; i<16; i+= 4) {
+			if (ac[i+0] != bc[i+3] ||
+			    ac[i+1] != bc[i+2] ||
+			    ac[i+2] != bc[i+1] ||
+			    ac[i+3] != bc[i+0])
+				return 0;
+		}
+		return 1;
+	} else {
+		if (a[0]==b[0] &&
+		    a[1]==b[1] &&
+		    a[2]==b[2] &&
+		    a[3]==b[3])
+			return 1;
+		return 0;
+	}
 }
 
 int check_ext2(int fd, char *name)
@@ -585,6 +603,7 @@ struct supertype *guess_super(int fd)
 	for (i=0 ; superlist[i]; i++) {
 		int rv;
 		ss = superlist[i];
+		st->ss = NULL;
 		rv = ss->load_super(st, fd, &sbp, NULL);
 		if (rv == 0) {
 			struct mdinfo info;
@@ -594,12 +613,12 @@ struct supertype *guess_super(int fd)
 				bestsuper = i;
 				besttime = info.array.ctime;
 			}
-			st->ss = NULL;
 			free(sbp);
 		}
 	}
 	if (bestsuper != -1) {
 		int rv;
+		st->ss = NULL;
 		rv = superlist[bestsuper]->load_super(st, fd, &sbp, NULL);
 		if (rv == 0) {
 			free(sbp);