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Problem Report 2512 Details

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This page provides all information on Problem Report 2512.

Report 2512 Actions

    Problem Report Number 2512
    Submitter's Classification Specification problem
    State Resolved
    Resolution Permanent Interpretation (PIN)
    Problem Resolution ID PIN.X.0273
    Raised 2006-02-24 03:49
    Updated 2006-02-28 01:45
    Published 2006-02-28 01:45
    Product Standard Internationalised System Calls and Libraries Extended V3 (UNIX 03)
    Certification Program The Open Brand certification program
    Test Suite VSTH version 5.4.3
    Test Identification PTHR.os/general/General/T.General,11
    Specification Base Definitions Issue 6
    Location in Spec XSH P1540, L46753-46754
    XSH P1402, L42498,42499
    Problem Summary The system() function is defined to be a thread-safe function. The
    specification requires it to use features which have an affect at the
    process scope, which renders it non-thread-safe.
    Problem Text As per the system () interface definition, "The system() function shall
    ignore the SIGINT and SIGQUIT signals, and shall block the SIGCHLD
    signal", the implementation needs to ignore the SIGINT and SIGQUIT
    signals during the execution of system(). To achieve this the
    implementation needs to literally or effectively execute the sigaction()
    function which has process wide scope "the sigaction() function allows
    the calling process to examine and/or specify the action to be
    associated with a specific signal".

    Since sigaction() can also be called in another thread to set a
    different signal action for SIGINT and SIGQUIT. This makes system()
    non-reentrant and non-threadsafe.

    See:

    http://www.opengroup.org/austin/aardvark/latest/xshbug2.txt

    Request Number 125
    Test Output 00|86 11 15:35:08|TP Start
    520|86 11 0001069703502 1026 1|system() did not restore the disposition
    of SIGINT
    520|86 11 0001069703502 1026 2|system() did not restore the disposition
    of SIGQUIT
    520|86 11 0001069703502 1026 3|Cleanup function, expected 0, got 2
    520|86 11 0001069703502 1026 4|system() unresolved
    520|86 11 0001069703484 3 1|tet_fork, expected 0, got 1
    220|86 11 2 15:35:31|UNRESOLVED
    410|86 11 1 15:35:31|IC End

    Review Information

    Review Type SA Review
    Start Date 2006-02-24 03:49
    Last Updated 2006-02-28 00:39
    Completed 2006-02-28 00:39
    Status Complete
    Review Resolution Temporary Interpretation (TIN)
    Review Conclusion This PR represents and agreed Temporary Interpretation. The Austin
    Group have considered the matter and a future change will allow the
    behaviour.

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