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Problem Report 0282 Details

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Report 0282 Actions

    Problem Report Number 0282
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0282
    Raised 2002-10-01 08:00
    Updated 2003-03-13 08:00
    Published 2002-10-08 08:00
    Product Standard Network File System
    Certification Program The Open Brand certification program
    Test Suite VSX4+XNFS version 4.4.5
    Test Identification XOPEN.os/streamio/tempnam 7
    Linked Problem Reports PIN4.060, (in, old, system)
    Problem Summary TSD4.282 Standard reference: http://www.opengroup.org/onlinepubs/007904975/functions/tempnam.html " If dir is a null pointer or points to a string which is not a name for an appropriate directory, the path pre...
    Problem Text

    Standard reference:
    http://www.opengroup.org/onlinepubs/007904975/functions/tempnam.html
    "
    If dir is a null pointer or points to a string which is not a name
    for an appropriate directory, the path prefix defined as P_tmpdir
    in the <stdio.h> header shall be used. If that directory is not
    accessible, an implementation-defined directory may be used.
    "

    From tmpdir.c, our implementation-defined fallback is "/tmp"
    (P_tmpdir is "/var/tmp"). We do an access checks on P_tmpdir
    and "/tmp" but not on the generated name. This appears to be
    legal according to the above reference.

    The test attempts to make the implementation-defined directory
    unaccessible by getting tempnam to generate an implementation
    defined name. It then mkdir's the full path it received, but
    instead of doing a chmod(.., 0) on each path component, it only
    uses (mode_t)0 on the last component; all other components are
    mkdir'ed with MODE_ANY. This is all done in tempnam_su.c,
    t7_cmd() and xnfs_create_dir().

    Hence, the implementation-defined dir "/tmp" *is* accessible and
    the test is wrong to think that it oughn't to be. Also the reference
    above doesn't say we have to check accessibility of "/tmp" (even
    though we do anyway).


    Test Output

    200|82 7 19:04:50|TP Start
    520|82 7 00066392 3 1|tempnam(dir, NULL) did not return NULL when dir,
    P_tmpdir, and the implementation defined directory (/tmp/AAAa00G9I) were not
    accessible
    520|82 7 00066392 3 2|instead returned /tmp/BAAa00G9I
    520|82 7 00066392 3 3|tempnam(dir, NULL) did not return NULL when dir,
    P_tmpdir, and the implementation defined directory (/tmp/AAAa00G9I) were not
    accessible
    520|82 7 00066392 3 4|instead returned /tmp/CAAa00G9I
    220|82 7 1 19:04:50|FAIL
    410|82 7 1 19:04:50|IC End

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    This is accepted as a fault in the test suite.

    The code is treating the entire return value from the first
    tempnam() call as the implementation-defined directory. It should
    strip off the last component before making it inaccessible, as
    is done in the non-XNFS version of the test.

    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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