Add subarray field to supertype.

[thirdparty/mdadm.git] / util.c

diff --git a/util.c b/util.c
index 08c6bb0b0e977acbb8c2bba724a96f456b1e58cd..3a5daa265284012702cc16c2fae4ea9cdd745846 100644 (file)
--- a/util.c
+++ b/util.c
@@ -788,8 +788,6 @@ struct superswitch *superlist[] = { &super0, &super1, &super_ddf, &super_imsm, N
 
 #if !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO)
 
-struct supertype supertype_container_member;
-
 struct supertype *super_by_fd(int fd)
 {
        mdu_array_info_t array;
@@ -800,6 +798,7 @@ struct supertype *super_by_fd(int fd)
        char *verstr;
        char version[20];
        int i;
+       char *subarray = NULL;
 
        sra = sysfs_read(fd, 0, GET_VERSION);
 
@@ -819,16 +818,37 @@ struct supertype *super_by_fd(int fd)
                sprintf(version, "%d.%d", vers, minor);
                verstr = version;
        }
-       if (minor == -2 && verstr[0] == '/')
-               st = &supertype_container_member;
-       else
-               for (i = 0; st == NULL && superlist[i] ; i++)
-                       st = superlist[i]->match_metadata_desc(verstr);
+       if (minor == -2 && verstr[0] == '/') {
+               char *dev = verstr+1;
+               subarray = strchr(dev, '/');
+               int devnum;
+               if (subarray)
+                       *subarray++ = '\0';
+               if (strncmp(dev, "md_d", 4) == 0)
+                       devnum = -1-atoi(dev+4);
+               else
+                       devnum = atoi(dev+2);
+               subarray = strdup(subarray);
+               if (sra)
+                       sysfs_free(sra);
+               sra = sysfs_read(-1, devnum, GET_VERSION);
+               verstr = sra->text_version ? : "-no-metadata-";
+       }
+
+       for (i = 0; st == NULL && superlist[i] ; i++)
+               st = superlist[i]->match_metadata_desc(verstr);
 
        if (sra)
                sysfs_free(sra);
-       if (st)
+       if (st) {
                st->sb = NULL;
+               if (subarray) {
+                       strncpy(st->subarray, subarray, 32);
+                       st->subarray[31] = 0;
+                       free(subarray);
+               } else
+                       st->subarray[0] = 0;
+       }
        return st;
 }
 #endif /* !defined(MDASSEMBLE) || defined(MDASSEMBLE) && defined(MDASSEMBLE_AUTO) */
@@ -845,6 +865,7 @@ struct supertype *dup_super(struct supertype *orig)
        st->ss = orig->ss;
        st->max_devs = orig->max_devs;
        st->minor_version = orig->minor_version;
+       strcpy(st->subarray, orig->subarray);
        st->sb = NULL;
        st->info = NULL;
        return st;