#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Michael DeHaan <michael.dehaan@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
import shutil
import stat
import grp
import pwd
try:
import selinux
HAVE_SELINUX=True
except ImportError:
HAVE_SELINUX=False
DOCUMENTATION = '''
---
module: file
version_added: "historical"
short_description: Sets attributes of files
description:
- Sets attributes of files, symlinks, and directories, or removes
files/symlinks/directories. Many other modules support the same options as
the M(file) module - including M(copy), M(template), and M(assemble).
options:
path:
description:
- 'path to the file being managed. Aliases: I(dest), I(name)'
required: true
default: []
aliases: ['dest', 'name']
state:
description:
- If C(directory), all immediate subdirectories will be created if they
do not exist. If C(file), the file will NOT be created if it does not
exist, see the M(copy) or M(template) module if you want that behavior.
If C(link), the symbolic link will be created or changed. Use C(hard)
for hardlinks. If C(absent), directories will be recursively deleted,
and files or symlinks will be unlinked. If C(touch) (new in 1.4), an empty file will
be created if the c(path) does not exist, while an existing file or
directory will receive updated file access and modification times (similar
to the way `touch` works from the command line).
required: false
default: file
choices: [ file, link, directory, hard, touch, absent ]
mode:
required: false
default: null
choices: []
description:
- mode the file or directory should be, such as 0644 as would be fed to I(chmod)
owner:
required: false
default: null
choices: []
description:
- name of the user that should own the file/directory, as would be fed to I(chown)
group:
required: false
default: null
choices: []
description:
- name of the group that should own the file/directory, as would be fed to I(chown)
src:
required: false
default: null
choices: []
description:
- path of the file to link to (applies only to C(state= link or hard)). Will accept absolute,
relative and nonexisting (with C(force)) paths. Relative paths are not expanded.
seuser:
required: false
default: null
choices: []
description:
- user part of SELinux file context. Will default to system policy, if
applicable. If set to C(_default), it will use the C(user) portion of the
policy if available
serole:
required: false
default: null
choices: []
description:
- role part of SELinux file context, C(_default) feature works as for I(seuser).
setype:
required: false
default: null
choices: []
description:
- type part of SELinux file context, C(_default) feature works as for I(seuser).
selevel:
required: false
default: "s0"
choices: []
description:
- level part of the SELinux file context. This is the MLS/MCS attribute,
sometimes known as the C(range). C(_default) feature works as for
I(seuser).
recurse:
required: false
default: "no"
choices: [ "yes", "no" ]
version_added: "1.1"
description:
- recursively set the specified file attributes (applies only to state=directory)
force:
required: false
default: "no"
choices: [ "yes", "no" ]
description:
- 'force the creation of the symlinks when the destination exists and is a file (so, we need to unlink the
"path" file and create symlink to the "src" file in place of it).'
notes:
- See also M(copy), M(template), M(assemble)
requirements: [ ]
author: Michael DeHaan
'''
EXAMPLES = '''
- file: path=/etc/foo.conf owner=foo group=foo mode=0644
- file: src=/file/to/link/to dest=/path/to/symlink owner=foo group=foo state=link
- file: path=/tmp/{{ item.path }} dest={{ item.dest }} state=link
with_items:
- { path: 'x', dest: 'y' }
- { path: 'z', dest: 'k' }
'''
def main():
module = AnsibleModule(
argument_spec = dict(
state = dict(choices=['file','directory','link','hard','touch','absent'], default=None),
path = dict(aliases=['dest', 'name'], required=True),
original_basename = dict(required=False), # Internal use only, for recursive ops
recurse = dict(default='no', type='bool'),
force = dict(required=False,default=False,type='bool'),
diff_peek = dict(default=None),
validate = dict(required=False, default=None),
src = dict(required=False, default=None),
),
add_file_common_args=True,
supports_check_mode=True
)
params = module.params
state = params['state']
force = params['force']
diff_peek = params['diff_peek']
src = params['src']
# modify source as we later reload and pass, specially relevant when used by other modules.
params['path'] = path = os.path.expanduser(params['path'])
# short-circuit for diff_peek
if diff_peek is not None:
appears_binary = False
try:
f = open(path)
b = f.read(8192)
f.close()
if "\x00" in b:
appears_binary = True
except:
pass
module.exit_json(path=path, changed=False, appears_binary=appears_binary)
# Find out current state
prev_state = 'absent'
if os.path.lexists(path):
if os.path.islink(path):
prev_state = 'link'
elif os.path.isdir(path):
prev_state = 'directory'
elif os.stat(path).st_nlink > 1:
prev_state = 'hard'
else:
# could be many other things, but defaulting to file
prev_state = 'file'
# state should default to file, but since that creates many conflicts,
# default to 'current' when it exists.
if state is None:
if prev_state != 'absent':
state = prev_state
else:
state = 'file'
# source is both the source of a symlink or an informational passing of the src for a template module
# or copy module, even if this module never uses it, it is needed to key off some things
if src is not None:
src = os.path.expanduser(src)
# original_basename is used by other modules that depend on file.
if os.path.isdir(path) and state not in ["link", "absent"]:
if params['original_basename']:
basename = params['original_basename']
else:
basename = os.path.basename(src)
params['path'] = path = os.path.join(path, basename)
else:
if state in ['link','hard']:
module.fail_json(msg='src and dest are required for creating links')
file_args = module.load_file_common_arguments(params)
changed = False
recurse = params['recurse']
if recurse and state != 'directory':
module.fail_json(path=path, msg="recurse option requires state to be 'directory'")
if state == 'absent':
if state != prev_state:
if not module.check_mode:
if prev_state == 'directory':
try:
shutil.rmtree(path, ignore_errors=False)
except Exception, e:
module.fail_json(msg="rmtree failed: %s" % str(e))
else:
try:
os.unlink(path)
except Exception, e:
module.fail_json(path=path, msg="unlinking failed: %s " % str(e))
module.exit_json(path=path, changed=True)
else:
module.exit_json(path=path, changed=False)
elif state == 'file':
if state != prev_state:
# file is not absent and any other state is a conflict
module.fail_json(path=path, msg='file (%s) is %s, cannot continue' % (path, prev_state))
changed = module.set_fs_attributes_if_different(file_args, changed)
module.exit_json(path=path, changed=changed)
elif state == 'directory':
if prev_state == 'absent':
if module.check_mode:
module.exit_json(changed=True)
os.makedirs(path)
changed = True
changed = module.set_fs_attributes_if_different(file_args, changed)
if recurse:
for root,dirs,files in os.walk( file_args['path'] ):
for fsobj in dirs + files:
fsname=os.path.join(root, fsobj)
tmp_file_args = file_args.copy()
tmp_file_args['path']=fsname
changed = module.set_fs_attributes_if_different(tmp_file_args, changed)
module.exit_json(path=path, changed=changed)
elif state in ['link','hard']:
absrc = src
if not os.path.isabs(absrc):
absrc = os.path.normpath('%s/%s' % (os.path.dirname(path), absrc))
if not os.path.exists(absrc) and not force:
module.fail_json(path=path, src=src, msg='src file does not exist, use "force=yes" if you really want to create the link: %s' % absrc)
if state == 'hard':
if not os.path.isabs(src):
module.fail_json(msg="absolute paths are required")
elif prev_state in ['file', 'hard', 'directory'] and not force:
module.fail_json(path=path, msg='refusing to convert between %s and %s for %s' % (prev_state, state, src))
if prev_state == 'absent':
changed = True
elif prev_state == 'link':
old_src = os.readlink(path)
if old_src != src:
changed = True
elif prev_state == 'hard':
if not (state == 'hard' and os.stat(path).st_ino == os.stat(src).st_ino):
changed = True
if not force:
module.fail_json(dest=path, src=src, msg='Cannot link, different hard link exists at destination')
elif prev_state in ['file', 'directory']:
changed = True
if not force:
module.fail_json(dest=path, src=src, msg='Cannot link, %s exists at destination' % prev_state)
else:
module.fail_json(dest=path, src=src, msg='unexpected position reached')
if changed and not module.check_mode:
if prev_state != 'absent':
# try to replace atomically
tmppath = '/'.join([os.path.dirname(path), ".%s.%s.tmp" % (os.getpid(),time.time())])
try:
if state == 'hard':
os.link(src,tmppath)
else:
os.symlink(src, tmppath)
os.rename(tmppath, path)
except OSError, e:
if os.path.exists(tmppath):
os.unlink(tmppath)
module.fail_json(path=path, msg='Error while replacing: %s' % str(e))
else:
try:
if state == 'hard':
os.link(src,path)
else:
os.symlink(src, path)
except OSError, e:
module.fail_json(path=path, msg='Error while linking: %s' % str(e))
changed = module.set_fs_attributes_if_different(file_args, changed)
module.exit_json(dest=path, src=src, changed=changed)
elif state == 'touch':
if not module.check_mode:
if prev_state == 'absent':
try:
open(path, 'w').close()
except OSError, e:
module.fail_json(path=path, msg='Error, could not touch target: %s' % str(e))
elif prev_state in ['file', 'directory']:
try:
os.utime(path, None)
except OSError, e:
module.fail_json(path=path, msg='Error while touching existing target: %s' % str(e))
else:
module.fail_json(msg='Cannot touch other than files and directories')
module.set_fs_attributes_if_different(file_args, True)
module.exit_json(dest=path, changed=True)
module.fail_json(path=path, msg='unexpected position reached')
# import module snippets
from ansible.module_utils.basic import *
main()