Adding Solaris/illumos support

README.md

@@ -20,6 +20,19 @@ FreeBSD systems via `pkg`:
 
 FreeNAS 9.10 includes `sg_ses` as part of the standard image.
 
+Solaris/OmniOS/OpenIndiana/SmartOS based systems:
+
+Native Solaris should have sg3_utils installed.  If executing `sg_ses` doesn't exist, it's necessary to install it from source.  Installing napp-it, for the ZFS GUI, also installed all the requisite development tools.  
+
+On OmniOS CE, the steps involved were:
+
+    * Download the package[the `sg3_utils` package](http://sg.danny.cz/sg/          sg3_utils.html).  Move to somewhere like `/root` and extract.
+    * Change into the directory, configure with `./configure --prefix=/root/sg3_utils`. 
+    * `make` && `make install`
+    * Run the fan script and set the path in the environment `sg_sess_path=/root/sg3_utils/bin/sg_ses python fancontrol.py 2`
+
+
+
 ## Usage
 
 Finds the ThinkServer Enclosure automatically. Works when the devices are either `/dev/sg*`, `/dev/ses*`, or `/dev/bsg/*`

fancontrol.py

@@ -6,11 +6,17 @@ import sys
 import time
 import glob
 import stat
+import os.path
 
 from io import BytesIO
 from subprocess import check_output, Popen, PIPE, STDOUT, CalledProcessError
 
-devices_to_check = ['/dev/sg*', '/dev/ses*', '/dev/bsg/*']
+devices_to_check = ['/dev/sg*', '/dev/ses*', '/dev/bsg/*', '/dev/es/ses*']
+
+sg_ses_binary = "sg_ses"
+
+if "sg_ses_path" in os.environ:
+    sg_ses_binary = os.getenv("sg_ses_path")
 
 
 def usage():
@@ -33,7 +39,7 @@ def get_requested_fan_speed():
 def print_speeds(device):
     for i in range(0, 6):
         print('Fan {} speed: {}'.format(i, check_output(
-            ['sg_ses', '--maxlen=32768', '--index=coo,{}'.format(i), '--get=1:2:11', device])
+            [sg_ses_binary, '--maxlen=32768', '--index=coo,{}'.format(i), '--get=1:2:11', device])
                                         .decode('utf-8').split('\n')[0]))
 
 
@@ -42,7 +48,10 @@ def find_sa120_devices():
     seen_devices = set()
     for device_glob in devices_to_check:
         for device in glob.glob(device_glob):
-            stats = os.stat(device)
+            try:
+                stats = os.stat(device)
+            except OSError:
+                continue
             if not stat.S_ISCHR(stats.st_mode):
                 print('Enclosure not found on ' + device)
                 continue
@@ -52,7 +61,7 @@ def find_sa120_devices():
                 continue
             seen_devices.add(device_id)
             try:
-                output = check_output(['sg_ses', '--maxlen=32768', device], stderr=STDOUT)
+                output = check_output([sg_ses_binary, '--maxlen=32768', device], stderr=STDOUT)
                 if b'ThinkServerSA120' in output:
                     print('Enclosure found on ' + device)
                     devices.append(device)