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Problem Report 2128 Details

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Report 2128 Actions

    Problem Report Number 2128
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.1093
    Raised 2002-06-26 08:00
    Updated 2003-03-13 08:00
    Published 2002-07-03 08:00
    Product Standard Internationalised System Calls and Libraries Extended V2 (UNIX 98)
    Certification Program The Open Brand certification program
    Test Suite VSTH version 5.2.3
    Test Identification PTHR.os/PTHR.os/schsched_rt/pthread_attr_setscope 1
    Problem Summary TSD5TH.00090 Dear Interpretations Committee, We are requesting a waiver for this test due to the behavior of our pthread implementation which causes this test to fail, but which we believe is in compliance with th...
    Problem Text
    Dear Interpretations Committee,

    We are requesting a waiver for this test due to the behavior of our pthread
    implementation which causes this test to fail, but which we believe is in
    compliance with the standard.

    This test is testing pthread_attr_setscope(). According to the standard:

    Conforming implementations support the PTHREAD_SCOPE_PROCESS scheduling
    contention scope, the PTHREAD_SCOPE_SYSTEM scheduling contention scope,
    or both.

    It also says that pthread_attr_setscope() will fail with ENOTSUP if an
    attempt is made to set the scope to an unsupported value.

    It tests that one or more of PTHREAD_SCOPE_PROCESS and PTHREAD_SCOPE_SYSTEM
    are supported by doing the following:

    For each of PTHREAD_SCOPE_PROCESS and PTHREAD_SCOPE_SYSTEM, it calls
    pthread_attr_setscope() to set the scope.

    If pthread_attr_setscope() fails with ENOTSUP, the test will still pass,
    as long as at least one of PTHREAD_SCOPE_PROCESS and PTHREAD_SCOPE_SYSTEM
    is supported. But if pthread_attr_setscope fails with any other errno,
    the test fails.

    In our case, we support both PTHREAD_SCOPE_PROCESS and PTHREAD_SCOPE_SYSTEM,
    but only privileged users are allowed to use PTHREAD_SCOPE_SYSTEM. Since
    the test user is not privileged, pthread_attr_setscope(PTHREAD_SCOPE_SYSTEM)
    fails with EACCESS (Permission denied). The test is expecting failures to
    return ENOTSUP, so it doesn't know what to do with EACCESS. This causes the
    test to fail with "pthread_attr_getscope unexpectedly failed, rval == 1"
    (The error message is actually wrong. It should say "setscope" not
    "getscope".)

    We believe that this behavior is compliant with the standard, but since we
    can't run the test suite as root, this test will always fail.

    Thank you for your consideration.

    Test Output
    400|186 1 1 13:35:42|IC Start
    200|186 1 13:35:42|TP Start
    520|186 1 000104409 1 1|If the feature test macro
    520|186 1 000104409 1 2|_POSIX_THREAD_PRIORITY_SCHEDULING is defined:
    520|186 1 000104409 1 3|a call to pthread_attr_setscope(attr,
    contentionscope)
    520|186 1 000104409 1 4|sets the value of the scope attribute of the
    attributes
    520|186 1 000104409 1 5|object specified by attr to contentionscope
    520|186 1 000104409 1 6|and returns 0 on success.
    520|186 1 000104409 1 7|Posix Ref: Component PTHREAD_ATTR_SETSCOPE
    520|186 1 000104409 1 8|Assertion 9945-1:1996 13.5.1.2-1(C)
    520|186 1 000104409 1 9|pthread_attr_getscope unexpectedly failed, rval == 1
    220|186 1 1 13:35:42|FAIL
    410|186 1 1 13:35:42|IC End

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    A test suite difficiency is recommended

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Test Suite Deficiency (TSD)
    Review Conclusion
    This is an agreed Test Suite Deficiency

    Problem Reporting System Options:

     

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