imsm: fix family number handling

[thirdparty/mdadm.git] / super-ddf.c

diff --git a/super-ddf.c b/super-ddf.c
index 77a481f37461cc8411b01b530764a53d6fcf0833..c28d8040895950c01c7adf9a5dedb96d05a8813e 100644 (file)
--- a/super-ddf.c
+++ b/super-ddf.c
@@ -1,7 +1,7 @@
 /*
  * mdadm - manage Linux "md" devices aka RAID arrays.
  *
- * Copyright (C) 2006-2007 Neil Brown <neilb@suse.de>
+ * Copyright (C) 2006-2009 Neil Brown <neilb@suse.de>
  *
  *
  *    This program is free software; you can redistribute it and/or modify
@@ -762,6 +762,9 @@ static int load_ddf_local(int fd, struct ddf_super *super,
 static int load_super_ddf_all(struct supertype *st, int fd,
                              void **sbp, char *devname, int keep_fd);
 #endif
+
+static void free_super_ddf(struct supertype *st);
+
 static int load_super_ddf(struct supertype *st, int fd,
                          char *devname)
 {
@@ -798,6 +801,8 @@ static int load_super_ddf(struct supertype *st, int fd,
                return 1;
        }
 
+       free_super_ddf(st);
+
        if (posix_memalign((void**)&super, 512, sizeof(*super))!= 0) {
                fprintf(stderr, Name ": malloc of %zu failed.\n",
                        sizeof(*super));
@@ -835,6 +840,18 @@ static int load_super_ddf(struct supertype *st, int fd,
                return rv;
        }
 
+       if (st->subarray[0]) {
+               struct vcl *v;
+
+               for (v = super->conflist; v; v = v->next)
+                       if (v->vcnum == atoi(st->subarray))
+                               super->currentconf = v;
+               if (!super->currentconf) {
+                       free(super);
+                       return 1;
+               }
+       }
+
        /* Should possibly check the sections .... */
 
        st->sb = super;
@@ -1172,7 +1189,6 @@ static void brief_examine_super_ddf(struct supertype *st, int verbose)
        char nbuf[64];
        getinfo_super_ddf(st, &info);
        fname_from_uuid(st, &info, nbuf, ':');
-       printf("ARRAY metadata=ddf UUID=%s\n", nbuf + 5);
 
        for (i=0; i<__be16_to_cpu(ddf->virt->max_vdes); i++) {
                struct virtual_entry *ve = &ddf->virt->entries[i];
@@ -1187,6 +1203,7 @@ static void brief_examine_super_ddf(struct supertype *st, int verbose)
                printf("ARRAY container=%s member=%d UUID=%s\n",
                       nbuf+5, i, nbuf1+5);
        }
+       printf("ARRAY metadata=ddf UUID=%s\n", nbuf + 5);
 }
 
 static void export_examine_super_ddf(struct supertype *st)
@@ -1495,17 +1512,6 @@ static int update_super_ddf(struct supertype *st, struct mdinfo *info,
        return rv;
 }
 
-__u32 random32(void)
-{
-       __u32 rv;
-       int rfd = open("/dev/urandom", O_RDONLY);
-       if (rfd < 0 || read(rfd, &rv, 4) != 4)
-               rv = random();
-       if (rfd >= 0)
-               close(rfd);
-       return rv;
-}
-
 static void make_header_guid(char *guid)
 {
        __u32 stamp;
@@ -2345,15 +2351,19 @@ static int __write_init_super_ddf(struct supertype *st, int do_close)
 
 static int write_init_super_ddf(struct supertype *st)
 {
+       struct ddf_super *ddf = st->sb;
+       struct vcl *currentconf = ddf->currentconf;
+
+       /* we are done with currentconf reset it to point st at the container */
+       ddf->currentconf = NULL;
 
        if (st->update_tail) {
                /* queue the virtual_disk and vd_config as metadata updates */
                struct virtual_disk *vd;
                struct vd_config *vc;
-               struct ddf_super *ddf = st->sb;
                int len;
 
-               if (!ddf->currentconf) {
+               if (!currentconf) {
                        int len = (sizeof(struct phys_disk) +
                                   sizeof(struct phys_disk_entry));
 
@@ -2372,14 +2382,14 @@ static int write_init_super_ddf(struct supertype *st)
                len = sizeof(struct virtual_disk) + sizeof(struct virtual_entry);
                vd = malloc(len);
                *vd = *ddf->virt;
-               vd->entries[0] = ddf->virt->entries[ddf->currentconf->vcnum];
-               vd->populated_vdes = __cpu_to_be16(ddf->currentconf->vcnum);
+               vd->entries[0] = ddf->virt->entries[currentconf->vcnum];
+               vd->populated_vdes = __cpu_to_be16(currentconf->vcnum);
                append_metadata_update(st, vd, len);
 
                /* Then the vd_config */
                len = ddf->conf_rec_len * 512;
                vc = malloc(len);
-               memcpy(vc, &ddf->currentconf->conf, len);
+               memcpy(vc, &currentconf->conf, len);
                append_metadata_update(st, vc, len);
 
                /* FIXME I need to close the fds! */