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04dec26a3a
ansible-later/env_27/lib/python2.7/site-packages/ansible/modules/system/mount.py
Robert Kaussow 04dec26a3a add missing dependencies and fix drone pipeline
2019-04-11 13:00:36 +02:00

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright: (c) 2012, Red Hat, inc
# Written by Seth Vidal
# based on the mount modules from salt and puppet
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
ANSIBLE_METADATA = {'metadata_version': '1.1',
'status': ['preview'],
'supported_by': 'core'}
DOCUMENTATION = '''
---
module: mount
short_description: Control active and configured mount points
description:
- This module controls active and configured mount points in C(/etc/fstab).
author:
- Ansible Core Team
- Seth Vidal
version_added: "0.6"
options:
path:
description:
- Path to the mount point (e.g. C(/mnt/files)).
- Before 2.3 this option was only usable as I(dest), I(destfile) and
I(name).
required: true
aliases: [ name ]
src:
description:
- Device to be mounted on I(path). Required when I(state) set to
C(present) or C(mounted).
fstype:
description:
- Filesystem type. Required when I(state) is C(present) or C(mounted).
opts:
description:
- Mount options (see fstab(5), or vfstab(4) on Solaris).
dump:
description:
- Dump (see fstab(5)). Note that if set to C(null) and I(state) set to
C(present), it will cease to work and duplicate entries will be made
with subsequent runs.
- Has no effect on Solaris systems.
default: 0
passno:
description:
- Passno (see fstab(5)). Note that if set to C(null) and I(state) set to
C(present), it will cease to work and duplicate entries will be made
with subsequent runs.
- Deprecated on Solaris systems.
default: 0
state:
description:
- If C(mounted), the device will be actively mounted and appropriately
configured in I(fstab). If the mount point is not present, the mount
point will be created.
- If C(unmounted), the device will be unmounted without changing I(fstab).
- C(present) only specifies that the device is to be configured in
I(fstab) and does not trigger or require a mount.
- C(absent) specifies that the device mount's entry will be removed from
I(fstab) and will also unmount the device and remove the mount
point.
required: true
choices: [ absent, mounted, present, unmounted ]
fstab:
description:
- File to use instead of C(/etc/fstab). You shouldn't use this option
unless you really know what you are doing. This might be useful if
you need to configure mountpoints in a chroot environment. OpenBSD
does not allow specifying alternate fstab files with mount so do not
use this on OpenBSD with any state that operates on the live
filesystem.
default: /etc/fstab (/etc/vfstab on Solaris)
boot:
description:
- Determines if the filesystem should be mounted on boot.
- Only applies to Solaris systems.
type: bool
default: 'yes'
version_added: '2.2'
backup:
description:
- Create a backup file including the timestamp information so you can get
the original file back if you somehow clobbered it incorrectly.
required: false
type: bool
default: "no"
version_added: '2.5'
notes:
- As of Ansible 2.3, the I(name) option has been changed to I(path) as
default, but I(name) still works as well.
'''
EXAMPLES = '''
# Before 2.3, option 'name' was used instead of 'path'
- name: Mount DVD read-only
mount:
path: /mnt/dvd
src: /dev/sr0
fstype: iso9660
opts: ro,noauto
state: present
- name: Mount up device by label
mount:
path: /srv/disk
src: LABEL=SOME_LABEL
fstype: ext4
state: present
- name: Mount up device by UUID
mount:
path: /home
src: UUID=b3e48f45-f933-4c8e-a700-22a159ec9077
fstype: xfs
opts: noatime
state: present
'''
import os
from ansible.module_utils.basic import AnsibleModule, get_platform
from ansible.module_utils.ismount import ismount
from ansible.module_utils.six import iteritems
from ansible.module_utils._text import to_native
def write_fstab(module, lines, path):
if module.params['backup']:
module.backup_local(path)
fs_w = open(path, 'w')
for l in lines:
fs_w.write(l)
fs_w.flush()
fs_w.close()
def _escape_fstab(v):
"""Escape invalid characters in fstab fields.
space (040)
ampersand (046)
backslash (134)
"""
if isinstance(v, int):
return v
else:
return(
v.
replace('\\', '\\134').
replace(' ', '\\040').
replace('&', '\\046'))
def set_mount(module, args):
"""Set/change a mount point location in fstab."""
to_write = []
exists = False
changed = False
escaped_args = dict([(k, _escape_fstab(v)) for k, v in iteritems(args)])
new_line = '%(src)s %(name)s %(fstype)s %(opts)s %(dump)s %(passno)s\n'
if get_platform() == 'SunOS':
new_line = (
'%(src)s - %(name)s %(fstype)s %(passno)s %(boot)s %(opts)s\n')
for line in open(args['fstab'], 'r').readlines():
if not line.strip():
to_write.append(line)
continue
if line.strip().startswith('#'):
to_write.append(line)
continue
# Check if we got a valid line for splitting
if (
get_platform() == 'SunOS' and len(line.split()) != 7 or
get_platform() != 'SunOS' and len(line.split()) != 6):
to_write.append(line)
continue
ld = {}
if get_platform() == 'SunOS':
(
ld['src'],
dash,
ld['name'],
ld['fstype'],
ld['passno'],
ld['boot'],
ld['opts']
) = line.split()
else:
(
ld['src'],
ld['name'],
ld['fstype'],
ld['opts'],
ld['dump'],
ld['passno']
) = line.split()
# Check if we found the correct line
if (
ld['name'] != escaped_args['name'] or (
# In the case of swap, check the src instead
'src' in args and
ld['name'] == 'none' and
ld['fstype'] == 'swap' and
ld['src'] != args['src'])):
to_write.append(line)
continue
# If we got here we found a match - let's check if there is any
# difference
exists = True
args_to_check = ('src', 'fstype', 'opts', 'dump', 'passno')
if get_platform() == 'SunOS':
args_to_check = ('src', 'fstype', 'passno', 'boot', 'opts')
for t in args_to_check:
if ld[t] != escaped_args[t]:
ld[t] = escaped_args[t]
changed = True
if changed:
to_write.append(new_line % ld)
else:
to_write.append(line)
if not exists:
to_write.append(new_line % escaped_args)
changed = True
if changed and not module.check_mode:
write_fstab(module, to_write, args['fstab'])
return (args['name'], changed)
def unset_mount(module, args):
"""Remove a mount point from fstab."""
to_write = []
changed = False
escaped_name = _escape_fstab(args['name'])
for line in open(args['fstab'], 'r').readlines():
if not line.strip():
to_write.append(line)
continue
if line.strip().startswith('#'):
to_write.append(line)
continue
# Check if we got a valid line for splitting
if (
get_platform() == 'SunOS' and len(line.split()) != 7 or
get_platform() != 'SunOS' and len(line.split()) != 6):
to_write.append(line)
continue
ld = {}
if get_platform() == 'SunOS':
(
ld['src'],
dash,
ld['name'],
ld['fstype'],
ld['passno'],
ld['boot'],
ld['opts']
) = line.split()
else:
(
ld['src'],
ld['name'],
ld['fstype'],
ld['opts'],
ld['dump'],
ld['passno']
) = line.split()
if (
ld['name'] != escaped_name or (
# In the case of swap, check the src instead
'src' in args and
ld['name'] == 'none' and
ld['fstype'] == 'swap' and
ld['src'] != args['src'])):
to_write.append(line)
continue
# If we got here we found a match - continue and mark changed
changed = True
if changed and not module.check_mode:
write_fstab(module, to_write, args['fstab'])
return (args['name'], changed)
def _set_fstab_args(fstab_file):
result = []
if (
fstab_file and
fstab_file != '/etc/fstab' and
get_platform().lower() != 'sunos'):
if get_platform().lower().endswith('bsd'):
result.append('-F')
else:
result.append('-T')
result.append(fstab_file)
return result
def mount(module, args):
"""Mount up a path or remount if needed."""
mount_bin = module.get_bin_path('mount', required=True)
name = args['name']
cmd = [mount_bin]
if get_platform().lower() == 'openbsd':
# Use module.params['fstab'] here as args['fstab'] has been set to the
# default value.
if module.params['fstab'] is not None:
module.fail_json(
msg=(
'OpenBSD does not support alternate fstab files. Do not '
'specify the fstab parameter for OpenBSD hosts'))
else:
cmd += _set_fstab_args(args['fstab'])
cmd += [name]
rc, out, err = module.run_command(cmd)
if rc == 0:
return 0, ''
else:
return rc, out + err
def umount(module, path):
"""Unmount a path."""
umount_bin = module.get_bin_path('umount', required=True)
cmd = [umount_bin, path]
rc, out, err = module.run_command(cmd)
if rc == 0:
return 0, ''
else:
return rc, out + err
def remount(module, args):
"""Try to use 'remount' first and fallback to (u)mount if unsupported."""
mount_bin = module.get_bin_path('mount', required=True)
cmd = [mount_bin]
# Multiplatform remount opts
if get_platform().lower().endswith('bsd'):
cmd += ['-u']
else:
cmd += ['-o', 'remount']
if get_platform().lower() == 'openbsd':
# Use module.params['fstab'] here as args['fstab'] has been set to the
# default value.
if module.params['fstab'] is not None:
module.fail_json(
msg=(
'OpenBSD does not support alternate fstab files. Do not '
'specify the fstab parameter for OpenBSD hosts'))
else:
cmd += _set_fstab_args(args['fstab'])
cmd += [args['name']]
out = err = ''
try:
if get_platform().lower().endswith('bsd'):
# Note: Forcing BSDs to do umount/mount due to BSD remount not
# working as expected (suspect bug in the BSD mount command)
# Interested contributor could rework this to use mount options on
# the CLI instead of relying on fstab
# https://github.com/ansible/ansible-modules-core/issues/5591
rc = 1
else:
rc, out, err = module.run_command(cmd)
except:
rc = 1
msg = ''
if rc != 0:
msg = out + err
rc, msg = umount(module, args['name'])
if rc == 0:
rc, msg = mount(module, args)
return rc, msg
# Note if we wanted to put this into module_utils we'd have to get permission
# from @jupeter -- https://github.com/ansible/ansible-modules-core/pull/2923
# @jtyr -- https://github.com/ansible/ansible-modules-core/issues/4439
# and @abadger to relicense from GPLv3+
def is_bind_mounted(module, linux_mounts, dest, src=None, fstype=None):
"""Return whether the dest is bind mounted
:arg module: The AnsibleModule (used for helper functions)
:arg dest: The directory to be mounted under. This is the primary means
of identifying whether the destination is mounted.
:kwarg src: The source directory. If specified, this is used to help
ensure that we are detecting that the correct source is mounted there.
:kwarg fstype: The filesystem type. If specified this is also used to
help ensure that we are detecting the right mount.
:kwarg linux_mounts: Cached list of mounts for Linux.
:returns: True if the dest is mounted with src otherwise False.
"""
is_mounted = False
if get_platform() == 'Linux' and linux_mounts is not None:
if src is None:
# That's for unmounted/absent
if dest in linux_mounts:
is_mounted = True
else:
if dest in linux_mounts:
is_mounted = linux_mounts[dest]['src'] == src
else:
bin_path = module.get_bin_path('mount', required=True)
cmd = '%s -l' % bin_path
rc, out, err = module.run_command(cmd)
mounts = []
if len(out):
mounts = to_native(out).strip().split('\n')
for mnt in mounts:
arguments = mnt.split()
if (
(arguments[0] == src or src is None) and
arguments[2] == dest and
(arguments[4] == fstype or fstype is None)):
is_mounted = True
if is_mounted:
break
return is_mounted
def get_linux_mounts(module, mntinfo_file="/proc/self/mountinfo"):
"""Gather mount information"""
try:
f = open(mntinfo_file)
except IOError:
return
lines = map(str.strip, f.readlines())
try:
f.close()
except IOError:
module.fail_json(msg="Cannot close file %s" % mntinfo_file)
mntinfo = {}
for line in lines:
fields = line.split()
record = {
'id': int(fields[0]),
'parent_id': int(fields[1]),
'root': fields[3],
'dst': fields[4],
'opts': fields[5],
'fs': fields[-3],
'src': fields[-2]
}
mntinfo[record['id']] = record
mounts = {}
for mnt in mntinfo.values():
if mnt['parent_id'] != 1 and mnt['parent_id'] in mntinfo:
m = mntinfo[mnt['parent_id']]
if (
len(m['root']) > 1 and
mnt['root'].startswith("%s/" % m['root'])):
# Ommit the parent's root in the child's root
# == Example:
# 140 136 253:2 /rootfs / rw - ext4 /dev/sdb2 rw
# 141 140 253:2 /rootfs/tmp/aaa /tmp/bbb rw - ext4 /dev/sdb2 rw
# == Expected result:
# src=/tmp/aaa
mnt['root'] = mnt['root'][len(m['root']):]
# Prepend the parent's dst to the child's root
# == Example:
# 42 60 0:35 / /tmp rw - tmpfs tmpfs rw
# 78 42 0:35 /aaa /tmp/bbb rw - tmpfs tmpfs rw
# == Expected result:
# src=/tmp/aaa
if m['dst'] != '/':
mnt['root'] = "%s%s" % (m['dst'], mnt['root'])
src = mnt['root']
else:
src = mnt['src']
record = {
'dst': mnt['dst'],
'src': src,
'opts': mnt['opts'],
'fs': mnt['fs']
}
mounts[mnt['dst']] = record
return mounts
def main():
module = AnsibleModule(
argument_spec=dict(
boot=dict(type='bool', default=True),
dump=dict(type='str'),
fstab=dict(type='str'),
fstype=dict(type='str'),
path=dict(type='path', required=True, aliases=['name']),
opts=dict(type='str'),
passno=dict(type='str'),
src=dict(type='path'),
backup=dict(default=False, type='bool'),
state=dict(type='str', required=True, choices=['absent', 'mounted', 'present', 'unmounted']),
),
supports_check_mode=True,
required_if=(
['state', 'mounted', ['src', 'fstype']],
['state', 'present', ['src', 'fstype']],
),
)
# solaris args:
# name, src, fstype, opts, boot, passno, state, fstab=/etc/vfstab
# linux args:
# name, src, fstype, opts, dump, passno, state, fstab=/etc/fstab
# Note: Do not modify module.params['fstab'] as we need to know if the user
# explicitly specified it in mount() and remount()
if get_platform().lower() == 'sunos':
args = dict(
name=module.params['path'],
opts='-',
passno='-',
fstab=module.params['fstab'],
boot='yes'
)
if args['fstab'] is None:
args['fstab'] = '/etc/vfstab'
else:
args = dict(
name=module.params['path'],
opts='defaults',
dump='0',
passno='0',
fstab=module.params['fstab']
)
if args['fstab'] is None:
args['fstab'] = '/etc/fstab'
# FreeBSD doesn't have any 'default' so set 'rw' instead
if get_platform() == 'FreeBSD':
args['opts'] = 'rw'
linux_mounts = []
# Cache all mounts here in order we have consistent results if we need to
# call is_bind_mounted() multiple times
if get_platform() == 'Linux':
linux_mounts = get_linux_mounts(module)
if linux_mounts is None:
args['warnings'] = (
'Cannot open file /proc/self/mountinfo. '
'Bind mounts might be misinterpreted.')
# Override defaults with user specified params
for key in ('src', 'fstype', 'passno', 'opts', 'dump', 'fstab'):
if module.params[key] is not None:
args[key] = module.params[key]
# If fstab file does not exist, we first need to create it. This mainly
# happens when fstab option is passed to the module.
if not os.path.exists(args['fstab']):
if not os.path.exists(os.path.dirname(args['fstab'])):
os.makedirs(os.path.dirname(args['fstab']))
open(args['fstab'], 'a').close()
# absent:
# Remove from fstab and unmounted.
# unmounted:
# Do not change fstab state, but unmount.
# present:
# Add to fstab, do not change mount state.
# mounted:
# Add to fstab if not there and make sure it is mounted. If it has
# changed in fstab then remount it.
state = module.params['state']
name = module.params['path']
changed = False
if state == 'absent':
name, changed = unset_mount(module, args)
if changed and not module.check_mode:
if ismount(name) or is_bind_mounted(module, linux_mounts, name):
res, msg = umount(module, name)
if res:
module.fail_json(
msg="Error unmounting %s: %s" % (name, msg))
if os.path.exists(name):
try:
os.rmdir(name)
except (OSError, IOError) as e:
module.fail_json(msg="Error rmdir %s: %s" % (name, to_native(e)))
elif state == 'unmounted':
if ismount(name) or is_bind_mounted(module, linux_mounts, name):
if not module.check_mode:
res, msg = umount(module, name)
if res:
module.fail_json(
msg="Error unmounting %s: %s" % (name, msg))
changed = True
elif state == 'mounted':
if not os.path.exists(name) and not module.check_mode:
try:
os.makedirs(name)
except (OSError, IOError) as e:
module.fail_json(
msg="Error making dir %s: %s" % (name, to_native(e)))
name, changed = set_mount(module, args)
res = 0
if (
ismount(name) or
is_bind_mounted(
module, linux_mounts, name, args['src'], args['fstype'])):
if changed and not module.check_mode:
res, msg = remount(module, args)
changed = True
else:
changed = True
if not module.check_mode:
res, msg = mount(module, args)
if res:
module.fail_json(msg="Error mounting %s: %s" % (name, msg))
elif state == 'present':
name, changed = set_mount(module, args)
else:
module.fail_json(msg='Unexpected position reached')
module.exit_json(changed=changed, **args)
if __name__ == '__main__':
main()
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