Various compile fixes.

Make "make everything" succeed.
This fixed some real bugs.

Signed-off-by: NeilBrown <neilb@suse.de>

Assemble.c

@@ -330,11 +330,13 @@ int Assemble(struct supertype *st, char *mddev,
 					fprintf(stderr, Name ": %s is a container, but we are looking for components\n",
 						devname);
 				tmpdev->used = 2;
+#if !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO)
 			} if (!tst && (tst = super_by_fd(dfd, NULL)) == NULL) {
 				if (report_missmatch)
 					fprintf(stderr, Name ": not a recognisable container: %s\n",
 						devname);
 				tmpdev->used = 2;
+#endif
 			} else if (!tst->ss->load_container
 				   || tst->ss->load_container(tst, dfd, NULL)) {
 				if (report_missmatch)

Incremental.c

@@ -883,7 +883,7 @@ static int array_try_spare(char *devname, int *dfdp, struct dev_policy *pol,
 		struct domainlist *dl = NULL;
 		struct mdinfo *sra;
 		unsigned long long devsize;
-		unsigned long long component_size;
+		unsigned long long component_size = 0;
 
 		if (is_subarray(mp->metadata))
 			continue;
@@ -1077,7 +1077,7 @@ static int partition_try_spare(char *devname, int *dfdp, struct dev_policy *pol,
 	DIR *dir;
 	struct dirent *de;
 	char *chosen = NULL;
-	unsigned long long chosen_size;
+	unsigned long long chosen_size = 0;
 	struct supertype *chosen_st = NULL;
 	int fd;
 
@@ -1118,7 +1118,10 @@ static int partition_try_spare(char *devname, int *dfdp, struct dev_policy *pol,
 		domain_free(domlist);
 		domlist = NULL;
 
-		asprintf(&devname, "/dev/disk/by-path/%s", de->d_name);
+		if (asprintf(&devname, "/dev/disk/by-path/%s", de->d_name) != 1) {
+			devname = NULL;
+			goto next;
+		}
 		fd = open(devname, O_RDONLY);
 		if (fd < 0)
 			goto next;

Monitor.c

@@ -291,7 +291,8 @@ static int check_one_sharer(int scan)
 	struct stat buf;
 	fp = fopen("/var/run/mdadm/autorebuild.pid", "r");
 	if (fp) {
-		fscanf(fp, "%d", &pid);
+		if (fscanf(fp, "%d", &pid) != 1)
+			pid = -1;
 		sprintf(dir, "/proc/%d", pid);
 		rv = stat(dir, &buf);
 		if (rv != -1) {

mapfile.c

@@ -380,7 +380,7 @@ void RebuildMap(void)
 			int dfd;
 			int ok;
 			struct supertype *st;
-			char *subarray;
+			char *subarray = NULL;
 			char *path;
 			struct mdinfo *info;
 

mdassemble.c

@@ -105,7 +105,7 @@ int main(int argc, char *argv[]) {
 			if (mdfd >= 0)
 				close(mdfd);
 			rv |= Assemble(array_list->st, array_list->devname,
-				       array_list, NULL, NULL,
+				       array_list, NULL, NULL, 0,
 				       readonly, runstop, NULL, NULL, 0,
 				       verbose, force);
 		}

super-gpt.c

@@ -205,8 +205,8 @@ static int validate_geometry(struct supertype *st, int level,
 struct superswitch gpt = {
 #ifndef MDASSEMBLE
 	.examine_super = examine_gpt,
-#endif
 	.validate_geometry = validate_geometry,
+#endif
 	.match_metadata_desc = match_metadata_desc,
 	.load_super = load_gpt,
 	.store_super = store_gpt,

super-intel.c

@@ -384,6 +384,7 @@ const char *get_sys_dev_type(enum sys_dev_type type)
 	return _sys_dev_type[type];
 }
 
+#ifndef MDASSEMBLE
 static struct intel_hba * alloc_intel_hba(struct sys_dev *device)
 {
 	struct intel_hba *result = malloc(sizeof(*result));
@@ -408,7 +409,6 @@ static struct intel_hba * find_intel_hba(struct intel_hba *hba, struct sys_dev *
 }
 
 
-
 static int attach_hba_to_super(struct intel_super *super, struct sys_dev *device,
 			       const char *devname)
 {
@@ -475,6 +475,7 @@ static struct sys_dev* find_disk_attached_hba(int fd, const char *devname)
 
 	return NULL;
 }
+#endif /* MDASSEMBLE */
 
 
 static struct supertype *match_metadata_desc_imsm(char *arg)
@@ -4646,7 +4647,6 @@ static int update_subarray_imsm(struct supertype *st, char *subarray,
 
 	return 0;
 }
-#endif /* MDASSEMBLE */
 
 static int is_gen_migration(struct imsm_dev *dev)
 {
@@ -4658,6 +4658,7 @@ static int is_gen_migration(struct imsm_dev *dev)
 
 	return 0;
 }
+#endif /* MDASSEMBLE */
 
 static int is_rebuilding(struct imsm_dev *dev)
 {
@@ -6639,7 +6640,6 @@ static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned ind
 		__free_imsm_disk(dl);
 	}
 }
-#endif /* MDASSEMBLE */
 
 static char disk_by_path[] = "/dev/disk/by-path/";
 
@@ -7066,7 +7066,7 @@ static int imsm_reshape_super(struct supertype *st, long long size, int level,
 
 	dprintf("imsm: reshape_super called.\n");
 
-	memset(&geo, sizeof(struct geo_params), 0);
+	memset(&geo, 0, sizeof(struct geo_params));
 
 	geo.dev_name = dev;
 	geo.dev_id = st->devnum;
@@ -7167,6 +7167,7 @@ static int imsm_manage_reshape(
 		afd, sra, reshape, st, stripes,
 		fds, offsets, dests, destfd, destoffsets);
 }
+#endif /* MDASSEMBLE */
 
 struct superswitch super_imsm = {
 #ifndef	MDASSEMBLE
@@ -7184,6 +7185,10 @@ struct superswitch super_imsm = {
 	.kill_subarray = kill_subarray_imsm,
 	.update_subarray = update_subarray_imsm,
 	.load_container	= load_container_imsm,
+	.default_geometry = default_geometry_imsm,
+	.get_disk_controller_domain = imsm_get_disk_controller_domain,
+	.reshape_super  = imsm_reshape_super,
+	.manage_reshape = imsm_manage_reshape,
 #endif
 	.match_home	= match_home_imsm,
 	.uuid_from_super= uuid_from_super_imsm,
@@ -7202,10 +7207,6 @@ struct superswitch super_imsm = {
 	.free_super	= free_super_imsm,
 	.match_metadata_desc = match_metadata_desc_imsm,
 	.container_content = container_content_imsm,
-	.default_geometry = default_geometry_imsm,
-	.get_disk_controller_domain = imsm_get_disk_controller_domain,
-	.reshape_super  = imsm_reshape_super,
-	.manage_reshape = imsm_manage_reshape,
 
 	.external	= 1,
 	.name = "imsm",

super-mbr.c

@@ -199,8 +199,8 @@ static int validate_geometry(struct supertype *st, int level,
 struct superswitch mbr = {
 #ifndef MDASSEMBLE
 	.examine_super = examine_mbr,
-#endif
 	.validate_geometry = validate_geometry,
+#endif
 	.match_metadata_desc = match_metadata_desc,
 	.load_super = load_super_mbr,
 	.store_super = store_mbr,

util.c

@@ -160,6 +160,7 @@ int get_linux_version()
 	return (a*1000000)+(b*1000)+c;
 }
 
+#ifndef MDASSEMBLE
 int mdadm_version(char *version)
 {
 	int a, b, c;
@@ -185,7 +186,6 @@ int mdadm_version(char *version)
 	return (a*1000000)+(b*1000)+c;
 }
 
-#ifndef MDASSEMBLE
 long long parse_size(char *size)
 {
 	/* parse 'size' which should be a number optionally