ansible/test/integration/targets/file/tasks/state_link.yml

# file module tests for dealing with symlinks (state=link)

- name: Initialize the test output dir
  include: initialize.yml

#
# Basic absolute symlink to a file
#
- name: create soft link to file
  file: src={{output_file}} dest={{output_dir}}/soft.txt state=link
  register: file1_result

- name: Get stat info for the link
  stat:
    path: '{{ output_dir }}/soft.txt'
    follow: False
  register: file1_link_stat

- name: verify that the symlink was created correctly
  assert:
    that:
      - 'file1_result is changed'
      - 'file1_link_stat["stat"].islnk'
      - 'file1_link_stat["stat"].lnk_target | expanduser == output_file | expanduser'

#
# Change an absolute soft link into a relative soft link
#
- name: change soft link to relative
  file: src={{output_file|basename}} dest={{output_dir}}/soft.txt state=link
  register: file2_result

- name: Get stat info for the link
  stat:
    path: '{{ output_dir }}/soft.txt'
    follow: False
  register: file2_link_stat

- name: verify that the file was marked as changed
  assert:
    that:
      - "file2_result is changed"
      - "file2_result.diff.before.src == remote_file_expanded"
      - "file2_result.diff.after.src == remote_file_expanded|basename"
      - "file2_link_stat['stat'].islnk"
      - "file2_link_stat['stat'].lnk_target == remote_file_expanded | basename"

#
# Check that creating the soft link a second time was idempotent
#
- name: soft link idempotency check
  file: src={{output_file|basename}} dest={{output_dir}}/soft.txt state=link
  register: file3_result

- name: Get stat info for the link
  stat:
    path: '{{ output_dir }}/soft.txt'
    follow: False
  register: file3_link_stat

- name: verify that the file was not marked as changed
  assert:
    that:
      - "not file3_result is changed"
      - "file3_link_stat['stat'].islnk"
      - "file3_link_stat['stat'].lnk_target == remote_file_expanded | basename"

#
# Test symlink to nonexistent files
#
- name: fail to create soft link to non existent file
  file:
    src: '/nonexistent'
    dest: '{{output_dir}}/soft2.txt'
    state: 'link'
    force: False
  register: file4_result
  ignore_errors: true

- name: verify that link was not created
  assert:
    that:
      - "file4_result is failed"

- name: force creation soft link to non existent
  file:
    src: '/nonexistent'
    dest: '{{ output_dir}}/soft2.txt'
    state: 'link'
    force: True
  register: file5_result

- name: Get stat info for the link
  stat:
    path: '{{ output_dir }}/soft2.txt'
    follow: False
  register: file5_link_stat

- name: verify that link was created
  assert:
    that:
      - "file5_result is changed"
      - "file5_link_stat['stat'].islnk"
      - "file5_link_stat['stat'].lnk_target == '/nonexistent'"

- name: Prove idempotence of force creation soft link to non existent
  file:
    src: '/nonexistent'
    dest: '{{ output_dir }}/soft2.txt'
    state: 'link'
    force: True
  register: file6a_result

- name: verify that the link to nonexistent is idempotent
  assert:
    that:
      - "file6a_result.changed == false"

# In order for a symlink in a sticky world writable directory to be followed, it must
# either be owned by the follower,
# or the directory and symlink must have the same owner.
- name: symlink in sticky directory
  block:
    - name: Create remote unprivileged remote user
      user:
        name: '{{ remote_unprivileged_user }}'
      register: user

    - name: Create a local temporary directory
      tempfile:
        state: directory
      register: tempdir

    - name: Set sticky bit
      file:
        path: '{{ tempdir.path }}'
        mode: o=rwXt

    - name: 'Check mode: force creation soft link in sticky directory owned by another user (mode is used)'
      file:
        src: '{{ user.home }}/nonexistent'
        dest: '{{ tempdir.path }}/soft3.txt'
        mode: 0640
        state: 'link'
        owner: '{{ remote_unprivileged_user }}'
        force: true
        follow: false
      check_mode: true
      register: missing_dst_no_follow_enable_force_use_mode1

    - name: force creation soft link in sticky directory owned by another user (mode is used)
      file:
        src: '{{ user.home }}/nonexistent'
        dest: '{{ tempdir.path }}/soft3.txt'
        mode: 0640
        state: 'link'
        owner: '{{ remote_unprivileged_user }}'
        force: true
        follow: false
      register: missing_dst_no_follow_enable_force_use_mode2

    - name: Get stat info for the link
      stat:
        path: '{{ tempdir.path }}/soft3.txt'
        follow: false
      register: soft3_result

    - name: 'Idempotence: force creation soft link in sticky directory owned by another user (mode is used)'
      file:
        src: '{{ user.home }}/nonexistent'
        dest: '{{ tempdir.path }}/soft3.txt'
        mode: 0640
        state: 'link'
        owner: '{{ remote_unprivileged_user }}'
        force: yes
        follow: false
      register: missing_dst_no_follow_enable_force_use_mode3
  always:
    - name: Delete remote unprivileged remote user
      user:
        name: '{{ remote_unprivileged_user }}'
        state: absent

    - name: Delete unprivileged user home and tempdir
      file:
        path: "{{ item }}"
        state: absent
      loop:
        - '{{ tempdir.path }}'
        - '{{ user.home }}'

- name: verify that link was created
  assert:
    that:
      - "missing_dst_no_follow_enable_force_use_mode1 is changed"
      - "missing_dst_no_follow_enable_force_use_mode2 is changed"
      - "missing_dst_no_follow_enable_force_use_mode3 is not changed"
      - "soft3_result['stat'].islnk"
      - "soft3_result['stat'].lnk_target == '{{ user.home }}/nonexistent'"

#
# Test creating a link to a directory https://github.com/ansible/ansible/issues/1369
#
- name: create soft link to directory using absolute path
  file:
    src: '/'
    dest: '{{ output_dir }}/root'
    state: 'link'
  register: file6_result

- name: Get stat info for the link
  stat:
    path: '{{ output_dir }}/root'
    follow: False
  register: file6_link_stat

- name: Get stat info for the pointed to file
  stat:
    path: '{{ output_dir }}/root'
    follow: True
  register: file6_links_dest_stat

- name: Get stat info for the file we intend to point to
  stat:
    path: '/'
    follow: False
  register: file6_dest_stat

- name: verify that the link was created correctly
  assert:
    that:
      # file command reports it created something
      - "file6_result.changed == true"
      # file command created a link
      - 'file6_link_stat["stat"]["islnk"]'
      # Link points to the right path
      - 'file6_link_stat["stat"]["lnk_target"] == "/"'
      # The link target and the file we intended to link to have the same inode
      - 'file6_links_dest_stat["stat"]["inode"] == file6_dest_stat["stat"]["inode"]'

#
# Test creating a relative link
#

# Relative link to file
- name: create a test sub-directory to link to
  file:
    dest: '{{ output_dir }}/sub1'
    state: 'directory'

- name: create a file to link to in the test sub-directory
  file:
    dest: '{{ output_dir }}/sub1/file1'
    state: 'touch'

- name: create another test sub-directory to place links within
  file:
    dest: '{{output_dir}}/sub2'
    state: 'directory'

- name: create soft link to relative file
  file:
    src: '../sub1/file1'
    dest: '{{ output_dir }}/sub2/link1'
    state: 'link'
  register: file7_result

- name: Get stat info for the link
  stat:
    path: '{{ output_dir }}/sub2/link1'
    follow: False
  register: file7_link_stat

- name: Get stat info for the pointed to file
  stat:
    path: '{{ output_dir }}/sub2/link1'
    follow: True
  register: file7_links_dest_stat

- name: Get stat info for the file we intend to point to
  stat:
    path: '{{ output_dir }}/sub1/file1'
    follow: False
  register: file7_dest_stat

- name: verify that the link was created correctly
  assert:
    that:
      # file command reports it created something
      - "file7_result.changed == true"
      # file command created a link
      - 'file7_link_stat["stat"]["islnk"]'
      # Link points to the right path
      - 'file7_link_stat["stat"]["lnk_target"] == "../sub1/file1"'
      # The link target and the file we intended to link to have the same inode
      - 'file7_links_dest_stat["stat"]["inode"] == file7_dest_stat["stat"]["inode"]'

# Relative link to directory
- name: create soft link to relative directory
  file:
    src: sub1
    dest: '{{ output_dir }}/sub1-link'
    state: 'link'
  register: file8_result

- name: Get stat info for the link
  stat:
    path: '{{ output_dir }}/sub1-link'
    follow: False
  register: file8_link_stat

- name: Get stat info for the pointed to file
  stat:
    path: '{{ output_dir }}/sub1-link'
    follow: True
  register: file8_links_dest_stat

- name: Get stat info for the file we intend to point to
  stat:
    path: '{{ output_dir }}/sub1'
    follow: False
  register: file8_dest_stat

- name: verify that the link was created correctly
  assert:
    that:
      # file command reports it created something
      - "file8_result.changed == true"
      # file command created a link
      - 'file8_link_stat["stat"]["islnk"]'
      # Link points to the right path
      - 'file8_link_stat["stat"]["lnk_target"] == "sub1"'
      # The link target and the file we intended to link to have the same inode
      - 'file8_links_dest_stat["stat"]["inode"] == file8_dest_stat["stat"]["inode"]'

# test the file module using follow=yes, so that the target of a
# symlink is modified, rather than the link itself

- name: create a test file
  copy:
    dest: '{{output_dir}}/test_follow'
    content: 'this is a test file\n'
    mode: 0666

- name: create a symlink to the test file
  file:
    path: '{{output_dir}}/test_follow_link'
    src: './test_follow'
    state: 'link'

- name: modify the permissions on the link using follow=yes
  file:
    path: '{{output_dir}}/test_follow_link'
    mode: 0644
    follow: yes
  register: file9_result

- name: stat the link target
  stat:
    path: '{{output_dir}}/test_follow'
  register: file9_stat

- name: assert that the chmod worked
  assert:
    that:
      - 'file9_result is changed'
      - 'file9_stat["stat"]["mode"] == "0644"'

#
# Test modifying the permissions of a link itself
#
- name: attempt to modify the permissions of the link itself
  file:
    path: '{{output_dir}}/test_follow_link'
    src: './test_follow'
    state: 'link'
    mode: 0600
    follow: False
  register: file10_result

# Whether the link itself changed is platform dependent! (BSD vs Linux?)
# Just check that the underlying file was not changed
- name: stat the link target
  stat:
    path: '{{output_dir}}/test_follow'
  register: file10_target_stat

- name: assert that the link target was unmodified
  assert:
    that:
      - 'file10_target_stat["stat"]["mode"] == "0644"'


# https://github.com/ansible/ansible/issues/56928
- block:

  - name: Create a testing file
    file:
      path: "{{ output_dir }}/test_follow1"
      state: touch

  - name: Create a symlink and change mode of the original file, since follow == yes by default
    file:
      src: "{{ output_dir }}/test_follow1"
      dest: "{{ output_dir }}/test_follow1_link"
      state: link
      mode: 0700

  - name: stat the original file
    stat:
      path: "{{ output_dir }}/test_follow1"
    register: stat_out

  - name: Check if the mode of the original file was set
    assert:
      that:
        - 'stat_out.stat.mode == "0700"'

  always:
    - name: Clean up
      file:
        path: "{{ item }}"
        state: absent
      loop:
        - "{{ output_dir }}/test_follow1"
        - "{{ output_dir }}/test_follow1_link"

# END #56928


# Test failure with src and no state parameter
- name: Specify src without state
  file:
    src: "{{ output_file }}"
    dest: "{{ output_dir }}/link.txt"
  ignore_errors: yes
  register: src_state

- name: Ensure src without state failed
  assert:
    that:
      - src_state is failed
      - "'src option requires state to be' in src_state.msg"

# Test creating a symlink when the destination exists and is a file
- name: create a test file
  copy:
    dest: '{{ output_dir }}/file.txt'
    content: 'this is a test file\n'
    mode: 0666

- name: Create a symlink with dest already a file
  file:
    src: '{{ output_file }}'
    dest: '{{ output_dir }}/file.txt'
    state: link
  ignore_errors: true
  register: dest_is_existing_file_fail

- name: Stat to make sure the symlink was not created
  stat:
    path: '{{ output_dir }}/file.txt'
    follow: false
  register: dest_is_existing_file_fail_stat

- name: Forcefully a symlink with dest already a file
  file:
    src: '{{ output_file }}'
    dest: '{{ output_dir }}/file.txt'
    state: link
    force: true
  register: dest_is_existing_file_force

- name: Stat to make sure the symlink was created
  stat:
    path: '{{ output_dir }}/file.txt'
    follow: false
  register: dest_is_existing_file_force_stat

- assert:
    that:
    - dest_is_existing_file_fail is failed
    - not dest_is_existing_file_fail_stat.stat.islnk
    - dest_is_existing_file_force is changed
    - dest_is_existing_file_force_stat.stat.exists
    - dest_is_existing_file_force_stat.stat.islnk