Re: [PATCH v2] selftests: capabilities: namespace create varies for root and normal user

[Shuah Khan]

On 11/11/23 10:38, Swarup Laxman Kotiaklapudi wrote:
> This patchset fixes TODO:
> "If we're already root, we could skip creating the userns."
>
> Change namespace creation for root and non-root
> user differently in create_and_enter_ns() function
> in this file:
> tools/testing/selftests/capabilities/test_execve.c
>
> Test result with root user:
> $sudo make  TARGETS="capabilities" kselftest
>   ...
>   TAP version 13
>   1..1
>   timeout set to 45
>   selftests: capabilities: test_execve
>   TAP version 13
>   1..12
>   [RUN]       +++ Tests with uid == 0 +++
>   [NOTE]      Using global UIDs for tests
>   [RUN]       Root => ep
>   ...
>   ok 12 Passed
>   Totals: pass:12 fail:0 xfail:0 xpass:0 skip:0 error:0
>   ==================================================
>   TAP version 13
>   1..9
>   [RUN]       +++ Tests with uid != 0 +++
>   [NOTE]      Using global UIDs for tests
>   [RUN]       Non-root => no caps
>   ...
>   ok 9 Passed
>   Totals: pass:9 fail:0 xfail:0 xpass:0 skip:0 error:0
>
> Test result without root or normal user:
> $make  TARGETS="capabilities" kselftest
>   ...
>   timeout set to 45
>   selftests: capabilities: test_execve
>   TAP version 13
>   1..12
>   [RUN]       +++ Tests with uid == 0 +++
>   [NOTE]      Using a user namespace for tests
>   [RUN]       Root => ep
>   validate_cap:: Capabilities after execve were correct
>   ok 1 Passed
>   Check cap_ambient manipulation rules
>   ok 2 PR_CAP_AMBIENT_RAISE failed on non-inheritable cap
>   ok 3 PR_CAP_AMBIENT_RAISE failed on non-permitted cap
>   ok 4 PR_CAP_AMBIENT_RAISE worked
>   ok 5 Basic manipulation appears to work
>   [RUN]       Root +i => eip
>   validate_cap:: Capabilities after execve were correct
>   ok 6 Passed
>   [RUN]       UID 0 +ia => eipa
>   validate_cap:: Capabilities after execve were correct
>   ok 7 Passed
>   ok 8 # SKIP SUID/SGID tests (needs privilege)
>   Planned tests != run tests (12 != 8)
>   Totals: pass:7 fail:0 xfail:0 xpass:0 skip:1 error:0
>   ==================================================
>   TAP version 13
>   1..9
>   [RUN]       +++ Tests with uid != 0 +++
>   [NOTE]      Using a user namespace for tests
>   [RUN]       Non-root => no caps
>   validate_cap:: Capabilities after execve were correct
>   ok 1 Passed
>   Check cap_ambient manipulation rules
>   ok 2 PR_CAP_AMBIENT_RAISE failed on non-inheritable cap
>   ok 3 PR_CAP_AMBIENT_RAISE failed on non-permitted cap
>   ok 4 PR_CAP_AMBIENT_RAISE worked
>   ok 5 Basic manipulation appears to work
>   [RUN]       Non-root +i => i
>   validate_cap:: Capabilities after execve were correct
>   ok 6 Passed
>   [RUN]       UID 1 +ia => eipa
>   validate_cap:: Capabilities after execve were correct
>   ok 7 Passed
>   ok 8 # SKIP SUID/SGID tests (needs privilege)
>   Planned tests != run tests (9 != 8)
>   Totals: pass:7 fail:0 xfail:0 xpass:0 skip:1 error:0
>
> Signed-off-by: Swarup Laxman Kotiaklapudi <swarupkotikalapudi@xxxxxxxxx>
> ---
>
> Changes in V2:
>   - Change the commit message explaining
>     why this patchset is needed.

Applied to linux-kselftest next for Linux 6.8-rc1

thanks,
-- Shuah