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Add selinux support to file module

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This adds the options: seuser, serole, setype, and serange to the file
module.  If the python selinux module doesn't exist, this will set
HAVE_SELINUX to False and punt in the related modules.

This takes the options the user provides and applies those to the
default selinux context as provided from matchpathcon().  If there is no
default context, this uses the value from the current context.  This
implies that if you set the setype and later remove it, the file module
will rever the setype to the default if available.
This commit is contained in:
Stephen Fromm 2012-04-12 10:33:10 -07:00
parent 08c593bee1
commit 1e5d34ba35
1 changed files with 65 additions and 7 deletions
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72
library/file
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@ -29,6 +29,11 @@ import shutil
import stat
import grp
import pwd
try:
import selinux
HAVE_SELINUX=True
except ImportError:
HAVE_SELINUX=False
def debug(msg):
# ansible ignores stderr, so it's safe to use for debug
@ -61,6 +66,8 @@ def add_path_info(kwargs):
kwargs['state'] = 'file'
else:
kwargs['state'] = 'directory'
if HAVE_SELINUX:
kwargs['secontext'] = ':'.join(selinux_context(path))
else:
kwargs['state'] = 'absent'
return kwargs
@ -91,8 +98,12 @@ group = params.get('group', None)
# presently unused, we always use -R (FIXME?)
recurse = params.get('recurse', 'false')
# presently unused, implement (FIXME)
secontext = params.get('secontext', None)
# selinux related options
seuser = params.get('seuser', None)
serole = params.get('serole', None)
setype = params.get('setype', None)
serange = params.get('serange', 's0')
secontext = [seuser, serole, setype, serange]
if state not in [ 'file', 'directory', 'link', 'absent']:
fail_json(msg='invalid state: %s' % state)
@ -119,12 +130,59 @@ def user_and_group(filename):
debug("got user=%s and group=%s" % (user, group))
return (user, group)
def selinux_context(path):
context = [None, None, None, None]
if not HAVE_SELINUX:
return context
try:
ret = selinux.lgetfilecon(path)
except:
fail_json(path=path, msg='failed to retrieve selinux context')
if ret[0] == -1:
return context
context = ret[1].split(':')
debug("got current secontext=%s" % ret[1])
return context
# If selinux fails to find a default, return an array of None
def selinux_default_context(path, mode=0):
context = [None, None, None, None]
print >>sys.stderr, path
if not HAVE_SELINUX:
return context
try:
ret = selinux.matchpathcon(path, mode)
except OSError:
return context
if ret[0] == -1:
return context
context = ret[1].split(':')
debug("got default secontext=%s" % ret[1])
return context
def set_context_if_different(path, context, changed):
if context is None:
return changed
if context is not None:
fail_json(path=path, msg='context not yet supported')
if not HAVE_SELINUX:
return changed
cur_context = selinux_context(path)
new_context = selinux_default_context(path)
for i in range(len(context)):
if context[i] is not None and context[i] != cur_context[i]:
debug('new context was %s' % new_context[i])
new_context[i] = context[i]
debug('new context is %s' % new_context[i])
elif new_context[i] is None:
new_context[i] = cur_context[i]
debug("current secontext is %s" % ':'.join(cur_context))
debug("new secontext is %s" % ':'.join(new_context))
if cur_context != new_context:
try:
rc = selinux.lsetfilecon(path, ':'.join(new_context))
except OSError:
fail_json(path=path, msg='invalid selinux context')
if rc != 0:
fail_json(path=path, msg='set selinux context failed')
changed = True
return changed
def set_owner_if_different(path, owner, changed):
if owner is None: