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fix a zfs boot regression introduced in r300117 by accident

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There is no reason to return non-zero value from zfs_probe_partition()
as that causes following partitions to not be probed for ZFS vdevs.
A particular scenario that I encountered is a GPT partitioned disk
where several partitions have freebsd-zfs type.  A partition with a lower
index is used as a cache (l2arc) vdev and in that case case zfs_probe()
returned a non-zero status.  That status was returned to ptable_iterate()
and caused it to abort the iteration.  Because of that the subsequent
partitions were not probed and a root pool was not discovered resulting
in a boot failure.

While there fix the style for nearby return statements.

Approved by:	re (kib)
This commit is contained in:
Andriy Gapon 2016-06-16 07:45:57 +00:00
parent c7161c4adc
commit dc87c22a61
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=301955
1 changed files with 5 additions and 5 deletions
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10
sys/boot/zfs/zfs.c
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@ -450,7 +450,7 @@ zfs_probe_partition(void *arg, const char *partname,
/* Probe only freebsd-zfs and freebsd partitions */
if (part->type != PART_FREEBSD &&
part->type != PART_FREEBSD_ZFS)
return 0;
return (0);
ppa = (struct zfs_probe_args *)arg;
strncpy(devname, ppa->devname, strlen(ppa->devname) - 1);
@ -458,10 +458,10 @@ zfs_probe_partition(void *arg, const char *partname,
sprintf(devname, "%s%s:", devname, partname);
pa.fd = open(devname, O_RDONLY);
if (pa.fd == -1)
return 0;
return (0);
ret = zfs_probe(pa.fd, ppa->pool_guid);
if (ret == 0)
return 0;
return (0);
/* Do we have BSD label here? */
if (part->type == PART_FREEBSD) {
pa.devname = devname;
@ -470,12 +470,12 @@ zfs_probe_partition(void *arg, const char *partname,
table = ptable_open(&pa, part->end - part->start + 1,
ppa->secsz, zfs_diskread);
if (table != NULL) {
ret = ptable_iterate(table, &pa, zfs_probe_partition);
ptable_iterate(table, &pa, zfs_probe_partition);
ptable_close(table);
}
}
close(pa.fd);
return (ret);
return (0);
}
int