ports/140811: [patch] sysutils/zfs-snapshot-mgmt: don't barf on top-level dataset

[Anonymous]

>Number:         140811
>Category:       ports
>Synopsis:       [patch] sysutils/zfs-snapshot-mgmt: don't barf on top-level dataset
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 23 23:40:02 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator:     Anonymous
>Release:        FreeBSD 9.0-CURRENT amd64
>Organization:
>Environment:
System: FreeBSD 9.0-CURRENT #0 199718M: Tue Nov 23 19:34:20 UTC 2009     holo at raphael.local:/a/objdir/a/dirty_build/sys/PHOENIX  amd64
>Description:
>How-To-Repeat:
$ zfs list -Ho name
tank
tank/home
tank/var

%% zfs-snapshot-mgmt.conf
snapshot_prefix: auto-
filesystems:
  tank:
    creation_rule:
      at_multiple: 10
      offset: 0
    preservation_rules:
      - { for_minutes:    90, at_multiple:    0, offset:    0 }
      - { for_minutes:   720, at_multiple:   30, offset:    0 }
      - { for_minutes: 10080, at_multiple:  180, offset:  120 }
%%

# zfs-snapshot-mgmt
/usr/local/bin/zfs-snapshot-mgmt:157:in `pool': private method `chop' called for nil:NilClass (NoMethodError)
        from /usr/local/bin/zfs-snapshot-mgmt:186:in `initialize'
        from /usr/local/bin/zfs-snapshot-mgmt:186:in `map'
        from /usr/local/bin/zfs-snapshot-mgmt:186:in `initialize'
        from /usr/local/bin/zfs-snapshot-mgmt:199:in `new'
        from /usr/local/bin/zfs-snapshot-mgmt:199

>Fix:
--- poolname_crop.diff begins here ---
Index: sysutils/zfs-snapshot-mgmt/files/patch-zfs-snapshot-mgmt
===================================================================
RCS file: sysutils/zfs-snapshot-mgmt/files/patch-zfs-snapshot-mgmt
diff -N sysutils/zfs-snapshot-mgmt/files/patch-zfs-snapshot-mgmt
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ sysutils/zfs-snapshot-mgmt/files/patch-zfs-snapshot-mgmt	23 Nov 2009 23:10:51 -0000
@@ -0,0 +1,14 @@
+--- zfs-snapshot-mgmt~
++++ zfs-snapshot-mgmt
+@@ -154,7 +154,11 @@ class FSInfo
+   end
+ 
+   def pool
++    if name["/"]
+     name[/\A.*?\//].chop
++    else
++      name
++    end
+   end
+ 
+ private
--- poolname_crop.diff ends here ---
>Release-Note:
>Audit-Trail:
>Unformatted: