mountpoints: OpenBSD: mount(8) -v for more options and disklabel(8) UID

"Verbose mode" yields makes some options always appear, e.g.
`rw` rather than lack of `read-only` or informational timestamps,
as well as a disk's unique identifier, iff available.

Example `mount` and `facter mountpoints` output changes due to `-v`:
```
-/dev/sd1a on / type ffs (local, noatime)
+/dev/sd1a (2b22b08ec9273d80.a) on / type ffs (rw, local, ctime=Sat Feb 21 13:52:57 2026)
```
```
 {
   available => "663.01 MiB",
   available_bytes => 695216128,
   capacity => "27.91%",
   device => "/dev/sd1a",
+  duid => "2b22b08ec9273d80.a",
   filesystem => "ffs",
   options => [
+    "rw",
     "local",
     "noatime",
+    "ctime=Sun Mar  1 16:49:49 2026"
   ],
   size => "988.19 MiB",
   size_bytes => 1036187648,
   used => "275.77 MiB",
   used_bytes => 289163264
 }
```

With DUID not available, e.g. after remounting in certain ways:
```
-/dev/sd1a on / type ffs (local, noatime)
+/dev/sd1a on / type ffs (rw, local, noatime, ctime=Sun Mar  1 16:31:04 2026)
```
```
 {
   available => "663.01 MiB",
   available_bytes => 695216128,
   capacity => "27.91%",
   device => "/dev/sd1a",
   filesystem => "ffs",
   options => [
+    "rw",
     "local",
     "noatime",
+    "ctime=Sun Mar  1 16:49:49 2026"
   ],
   size => "988.19 MiB",
   size_bytes => 1036187648,
   used => "275.77 MiB",
   used_bytes => 289163264
 }
```

This makes it easier to:
- compare and ensure options
- manage fstab(5) using stable DUIDs
  (device numbers roam due to attach order, softraid(4)/vnd(4), etc.)

Author: klemensn

lib/facter/resolvers/openbsd/mountpoints.rb

@@ -17,7 +17,7 @@ def post_resolve(fact_name, _options)
 
           def read_mount(fact_name)
             @fact_list[:mountpoints] = {}
-            output = Facter::Core::Execution.execute('mount', logger: log)
+            output = Facter::Core::Execution.execute('mount -v', logger: log)
             output.split("\n").map do |line|
               add_mount_points_fact(line)
             end
@@ -27,11 +27,21 @@ def read_mount(fact_name)
           end
 
           def add_mount_points_fact(line)
-            (elem, _, options) = line.partition("\s(")
-            elem = elem.split("\s")
-            options = options.chop!.split(",\s")
-            @fact_list[:mountpoints][elem[2]] = { device: elem[0], filesystem: elem[4],
-                                                  options: options }
+            (*tokens, options) = line.split(/\s*\(|\)\s*/, 0)
+
+            if tokens.length == 3
+              (device, duid, tokens) = tokens
+            else
+              (device, tokens) = tokens[0].split("\s", 2)
+            end
+            (_on, path, _type, filesystem) = tokens.split("\s")
+
+            @fact_list[:mountpoints][path] = {
+              device: device,
+              duid: duid,
+              filesystem: filesystem,
+              options: options.split(",\s")
+            }.compact
           end
 
           def retrieve_sizes_for_mounts

spec/facter/resolvers/openbsd/mountpoints_spec.rb

@@ -16,7 +16,7 @@
 
   before do
     allow(Facter::Core::Execution).to receive(:execute)
-      .with('mount', logger: an_instance_of(Facter::Log))
+      .with('mount -v', logger: an_instance_of(Facter::Log))
       .and_return(load_fixture('openbsd_filesystems').read)
     allow(Facter::Core::Execution).to receive(:execute)
       .with('df -P', logger: an_instance_of(Facter::Log))