Allow --auto to still be meaningful when --scan is given

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

ChangeLog

@@ -6,6 +6,9 @@ Changes Prior to this release
 	so that stack devices are stopped properly
     -   Minor type rationalisation for ident->uuid - now always 'int[]'
     -   Fix type in online help for --grow (was -F, now -G)
+    -   Allow --auto command line option to set default auto=
+	value when running "--assemble --scan".  Previously
+	--auto was ignored if --scan was given
 	
 Changes Prior to 1.11.0 release
     -   Fix embarassing bug which causes --add to always fail.

config.c

@@ -345,7 +345,7 @@ void arrayline(char *line)
 			else if (strcasecmp(w+5,"yes")==0 || strcasecmp(w+5,"md")==0)
 				mis.autof = -1;
 			else {
-				/* There might be digits, and maybe a hypen, at the end */
+				/* There might be digits, and maybe a hyphen, at the end */
 				char *e = w+5 + strlen(w+5);
 				int num = 4;
 				int len;

mdadm.8

@@ -435,6 +435,14 @@ from this.  See DEVICE NAMES below.
 The argumentment can also come immediately after
 "-a".  e.g. "-ap".
 
+If
+.I --scan
+is also given, then any
+.I auto=
+entries in the config file will over-ride the
+.I --auto
+instruction given on the command line.
+
 For partitionable arrays,
 .I mdadm
 will create the device file for the whole array and for the first 4

mdadm.c

@@ -821,7 +821,8 @@ int main(int argc, char *argv[])
 					devlist->devname);
 				rv |= 1;
 			} else {
-				mdfd = open_mddev(devlist->devname, array_ident->autof);
+				mdfd = open_mddev(devlist->devname, 
+						  array_ident->autof ? array_ident->autof : autof);
 				if (mdfd < 0)
 					rv |= 1;
 				else {
@@ -848,7 +849,8 @@ int main(int argc, char *argv[])
 					rv |= 1;
 					continue;
 				}
-				mdfd = open_mddev(dv->devname, array_ident->autof);
+				mdfd = open_mddev(dv->devname, 
+						  array_ident->autof ?array_ident->autof : autof);
 				if (mdfd < 0) {
 					rv |= 1;
 					continue;
@@ -866,7 +868,8 @@ int main(int argc, char *argv[])
 			} else
 				for (; array_list; array_list = array_list->next) {
 					mdu_array_info_t array;
-					mdfd = open_mddev(array_list->devname, array_list->autof);
+					mdfd = open_mddev(array_list->devname, 
+							  array_list->autof ? array_list->autof : autof);
 					if (mdfd < 0) {
 						rv |= 1;
 						continue;