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1 #!/usr/bin/python2.6 |
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2 |
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3 # Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
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4 # |
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5 # Licensed under the Apache License, Version 2.0 (the "License"); you may |
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6 # not use this file except in compliance with the License. You may obtain |
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7 # a copy of the License at |
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8 # |
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9 # http://www.apache.org/licenses/LICENSE-2.0 |
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10 # |
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11 # Unless required by applicable law or agreed to in writing, software |
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12 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
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13 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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14 # License for the specific language governing permissions and limitations |
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15 # under the License. |
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16 |
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17 import ConfigParser |
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18 import os |
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19 import sys |
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20 |
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21 import smf_include |
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22 |
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23 from subprocess import CalledProcessError, Popen, PIPE, check_call |
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24 |
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25 |
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26 def start(): |
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27 """ retrieves the setting for 'zfs_volume_base' from Cinder's conf file in |
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28 order to set it up properly for Cinder to use. |
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29 |
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30 """ |
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31 parser = ConfigParser.ConfigParser() |
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32 parser.read("/etc/cinder/cinder.conf") |
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33 |
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34 # set up the top-level dataset with the proper permissions for cinder |
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35 top_ds = parser.get("DEFAULT", "zfs_volume_base") |
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36 |
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37 # look to see if the dataset exists |
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38 cmd = ["/usr/sbin/zfs", "list", top_ds] |
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39 try: |
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40 check_call(cmd, stdout=PIPE, stderr=PIPE) |
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41 except CalledProcessError as err: |
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42 # the dataset doesn't exist, so go create it |
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43 try: |
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44 check_call(["/usr/sbin/zfs", "create", "-p", top_ds]) |
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45 except CalledProcessError as err: |
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46 print "unable to create %s: %s" % (top_ds, err) |
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47 return smf_include.SMF_EXIT_ERR_CONFIG |
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48 |
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49 # get the mountpoint |
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50 cmd = ["/usr/sbin/zfs", "get", "-H", "-o", "value", "mountpoint", top_ds] |
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51 p = Popen(cmd, stdout=PIPE, stderr=PIPE) |
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52 mountpoint, error = p.communicate() |
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53 if p.returncode != 0: |
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54 print "unable to determine mountpoint of %s: %s" % (top_ds, error) |
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55 return smf_include.SMF_EXIT_ERR_CONFIG |
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56 |
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57 p = Popen(["/usr/bin/ls", "-dv", mountpoint], stdout=PIPE, stderr=PIPE) |
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58 output, error = p.communicate() |
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59 |
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60 if "user:cinder:add_subdirectory/append_data:allow" not in output: |
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61 # set an ACL to all mountpoint access |
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62 try: |
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63 check_call(["/usr/bin/chmod", |
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64 "A+user:cinder:add_subdirectory:allow", |
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65 mountpoint.strip()]) |
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66 except CalledProcessError as err: |
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67 print "ACL creation for mountpoint access of " |
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68 print "%s to 'cinder' failed: %s" % (top_ds, err) |
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69 return smf_include.SMF_EXIT_ERR_CONFIG |
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70 |
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71 # set delegation |
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72 cmd = ["/usr/sbin/zfs", "allow", "cinder", |
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73 "clone,create,destroy,mount,snapshot", top_ds] |
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74 try: |
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75 check_call(cmd) |
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76 except CalledProcessError as err: |
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77 print "delegation of %s to 'cinder' failed: %s" % (top_ds, err) |
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78 return smf_include.SMF_EXIT_ERR_CONFIG |
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79 |
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80 return smf_include.SMF_EXIT_OK |
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81 |
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82 if __name__ == "__main__": |
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83 os.putenv("LC_ALL", "C") |
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84 smf_include.smf_main() |