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Examine: add examine_export for ddf and avoid crashes. 

If the personality doesn't provide export_examine_super, don't crash.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2009-03-09 14:10:52 +11:00
parent e5a2a3cf8c
commit bceedeec55
2 changed files with 15 additions and 1 deletions
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3
Examine.c
View File

@ -128,7 +128,8 @@ int Examine(mddev_dev_t devlist, int brief, int export, int scan,
d = dl_strdup(devlist->devname);
dl_add(ap->devs, d);
} else if (export) {
st->ss->export_examine_super(st);
if (st->ss->export_examine_super)
st->ss->export_examine_super(st);
} else {
printf("%s:\n",devlist->devname);
st->ss->examine_super(st, homehost);

13
super-ddf.c
View File

@ -1189,6 +1189,18 @@ static void brief_examine_super_ddf(struct supertype *st)
}
}
static void export_examine_super_ddf(struct supertype *st)
{
struct mdinfo info;
char nbuf[64];
getinfo_super_ddf(st, &info);
fname_from_uuid(st, &info, nbuf, ':');
printf("MD_METADATA=ddf\n");
printf("MD_LEVEL=container\n");
printf("MD_UUID=%s\n", nbuf+5);
}
static void detail_super_ddf(struct supertype *st, char *homehost)
{
/* FIXME later
@ -3563,6 +3575,7 @@ struct superswitch super_ddf = {
#ifndef MDASSEMBLE
.examine_super = examine_super_ddf,
.brief_examine_super = brief_examine_super_ddf,
.export_examine_super = export_examine_super_ddf,
.detail_super = detail_super_ddf,
.brief_detail_super = brief_detail_super_ddf,
.validate_geometry = validate_geometry_ddf,