Re: [PATCH V4 0/1] selinux-testsuite: Add filesystem tests

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On 1/14/20 7:28 AM, Richard Haines wrote:
These tests should cover all the areas in selinux/hooks.c that touch
the 'filesystem' class. Each hooks.c function is listed in the 'test'
script as there are some permissions that are checked in multiple places.

Tested on Fedora 31 and Rawhide (5.5 for the new watch perm).

V4 Changes:
1) Test non-name based type transition rule.
2) Test two different name-based type transition rules that only differ
    in name.

Sorry, I guess my wording was confusing. What I meant was that the inputs to the two name-based type transition rules were identical except for the name, but you would want them to have different output/result types so that you can tell whether it actually distinguished them.

3) Creating ext4 filesystems with inodes > 128 bytes using -I 256.
4) Use kernel_setsched() macro.

V3 Changes:
1) Lots of minor updates.
2) Add 'udevadm settle' as suggested by Ondrej to resolve udisks(8) issue.
3) Add stopping udisks(8) daemon as a '-d' option.
4) Add file quotaon test.
5) Add test for name type_transition rule.
6) Fix setfscreatecon(3) test to create a directory and check context.
7) Use kernel_dontaudit_setsched() as explained in [1].

[1] https://lore.kernel.org/selinux/f863a91987c1926a4351f3edf968c9003197fead.camel@xxxxxxxxxxxxxx/

V2 Changes:
1) If udisks(8) daemon is running, stop then restart after tests. The tests
    run faster and stops the annoying habit of adding mounts to the 'files'
    app on the desktop. Supports /usr/bin/systemctl or /usr/sbin/service
    More importantly it stops interferance with the '*context=' tests as it
    can cause intermittent failures. Tested by running 'test' in a continuous
    loop with udisks enabled, and then again disabled.
    Loop 200 times, with udisks failed between 1 to 70 iterations, without
    udisks, no failures.
2) Add "#define QFMT_VFS_V0 2" to quotas_test.c to fix a RHEL/CentOS 7 and
    below build issue.
3) Build new file context based on the original in
    create_file_change_context.c
4) Use "runcon `id -Z` quotacheck ..." to resolve RHEL-6 test run issue.
5) Fix free() contexts in create_file_change_context.c and
    check_mount_context.c

To test fanotify fs watch perm on 5.5+:
1) Build the testsuite policy first:
make -C policy load

2) Add the following CIL statements to watch.cil and install:
semodule -i watch.cil

(common filesystem (watch))
(classcommon filesystem filesystem)
(allow test_filesystem_t self(filesystem (watch)))
; Until 'fs_watch_all_fs(test_filesystem_t)' in Policy use:
(allow test_filesystem_t fs_t (filesystem (watch)))
; Required if notify policy enabled
;(allow test_filesystem_t self (dir (watch_sb)))

3) Edit /usr/share/selinux/devel/include/support/all_perms.spt
    and insert the 'watch' permission at:

define(`all_filesystem_perms',`{ mount remount ..... watch }')

Richard Haines (1):
   selinux-testsuite: Add filesystem tests

  defconfig                                     |   6 +
  policy/Makefile                               |   4 +
  policy/test_filesystem.te                     | 356 +++++++
  tests/Makefile                                |   7 +
  tests/filesystem/.gitignore                   |  11 +
  tests/filesystem/Makefile                     |  16 +
  tests/filesystem/check_file_context.c         |  75 ++
  tests/filesystem/check_mount_context.c        | 127 +++
  tests/filesystem/create_file.c                | 117 +++
  tests/filesystem/create_file_change_context.c | 146 +++
  tests/filesystem/fanotify_fs.c                |  79 ++
  tests/filesystem/fs_relabel.c                 | 138 +++
  tests/filesystem/grim_reaper.c                |  89 ++
  tests/filesystem/mount.c                      | 130 +++
  tests/filesystem/quotas_test.c                | 143 +++
  tests/filesystem/statfs_test.c                |  65 ++
  tests/filesystem/test                         | 941 ++++++++++++++++++
  tests/filesystem/umount.c                     |  84 ++
  18 files changed, 2534 insertions(+)
  create mode 100644 policy/test_filesystem.te
  create mode 100644 tests/filesystem/.gitignore
  create mode 100644 tests/filesystem/Makefile
  create mode 100644 tests/filesystem/check_file_context.c
  create mode 100644 tests/filesystem/check_mount_context.c
  create mode 100644 tests/filesystem/create_file.c
  create mode 100644 tests/filesystem/create_file_change_context.c
  create mode 100644 tests/filesystem/fanotify_fs.c
  create mode 100644 tests/filesystem/fs_relabel.c
  create mode 100644 tests/filesystem/grim_reaper.c
  create mode 100644 tests/filesystem/mount.c
  create mode 100644 tests/filesystem/quotas_test.c
  create mode 100644 tests/filesystem/statfs_test.c
  create mode 100755 tests/filesystem/test
  create mode 100644 tests/filesystem/umount.c





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