[Plugins] Add new add_udev_info() method

Adds a new collection method add_udev_info() which will collect 'udevadm
info' output for a given device or list of devices.

An optional 'attrs' boolean will, if True, have udevadm perform an
attribute-walk of the device's sysfs attributes.

This method can take either device names such as '/dev/sda' or sysfs
paths such as '/sys/class/scsi_host/host0' and these styles may be
freely interchanged in a list given to a single call.

Resolves: #1293

Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>
Signed-off-by: Bryn M. Reeves <bmr@redhat.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/sos/plugins/__init__.py b/sos/plugins/__init__.py
index 598cc127..7bb8d2e8 100644
--- a/sos/plugins/__init__.py
+++ b/sos/plugins/__init__.py
@@ -852,6 +852,25 @@ class Plugin(object):
         self._log_debug("collecting journal: %s" % journal_cmd)
         self._add_cmd_output(journal_cmd, None, None, timeout)
 
+    def add_udev_info(self, device, attrs=False):
+        """Collect udevadm info output for a given device
+
+        :param device: A string or list of strings of device names or sysfs
+                       paths. E.G. either '/sys/class/scsi_host/host0' or
+                       '/dev/sda' is valid.
+        :param attrs: If True, run udevadm with the --attribute-walk option.
+        """
+        udev_cmd = 'udevadm info'
+        if attrs:
+            udev_cmd += ' -a'
+
+        if isinstance(device, six.string_types):
+            device = [device]
+
+        for dev in device:
+            self._log_debug("collecting udev info for: %s" % dev)
+            self._add_cmd_output('%s %s' % (udev_cmd, dev))
+
     def _expand_copy_spec(self, copyspec):
         return glob.glob(copyspec)