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Problem Report 2336 Details

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Report 2336 Actions

    Problem Report Number 2336
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.1204
    Raised 2004-02-13 20:39
    Updated 2004-02-16 18:39
    Published 2004-02-16 18:39
    Product Standard Internationalised System Calls and Libraries Extended V3 (UNIX 03)
    Certification Program The Open Brand certification program
    Test Suite VSRT version 5.2.5
    Test Identification rt.os/mfiles/mmap test 22
    Specification Base Definitions Issue 6
    Location in Spec starting at line 41201 in the SUSv3 TC1 pdf.
    Problem Summary Non SUSv3 flag passed to shm_open()
    Problem Text This problem was found after applying the suggested fix in PR2335.

    in mmap.c, test22 the following code is found:

    fd = vsrt_open_shm(shbuf, O_WRONLY, VSRT_PROT_ALL);

    then in vsrt_open_shm()(SRC/common/vsrtlib/mkmmap.c)

    int vsrt_open_shm(s, flag, mode)
    char *s;
    int flag;
    mode_t mode;
    {
    return vsrt_open_shm_np(s, flag, mode, 2);
    }

    so flag is set to O_WRONLY

    following the code:

    int vsrt_open_shm_np(s, flag, mode, npages)
    ....
    if ((fd = shm_open(s, (O_RDWR|O_CREAT|O_TRUNC),
    (mode_t)(S_IRWXU|S_IRWXG|S_IRW
    XO))) == -1) {
    ....
    if ((fd = shm_open(s, flag, mode)) == -1) {

    so this translates to

    if ((fd = shm_open(s, O_WRONLY, VSRT_PROT_ALL)) == -1) {

    However, SUSv3 TC1 rationale(description states the same but in more
    detail) states:

    "The set of valid open flags to shm_open( ) was restricted to O_RDONLY,
    O_RDWR, O_CREAT, and O_TRUNC because these could be easily implemented
    on most memory mapping systems. This volume of IEEE Std 1003.1-2001 is
    silent on the results if the implementation cannot supply the requested
    file access because of implementation-defined reasons, including
    hardware ones."


    so O_WRONLY is not a valid flag for shm_open() and our implementation
    correctly returns EINVAL.
    Test Output
    ************************************************************************
    /tset/rt.os/mfiles/mmap/T.mmap 22 Failed

    Test Description:
    If _POSIX_SHARED_MEMORY_OBJECTS is defined or the implementation
    supports the mmap() function as defined in System Interfaces and
    Headers, Issue 5:
    A call to mmap() for a shared memory object when fildes is not
    open
    for reading, regardless of the protection specified, shall return
    MAP_FAILED and set errno to EACCES.


    Test Information:
    vsrt_open_shm_np: second shm_open() failed for "/tmp/vsrt_shmem2",
    errno = 22 (EINVAL)


    ************************************************************************

    Review Information

    Review Type TSMA Review
    Start Date 2004-02-13 20:39
    Last Updated 2004-02-13 23:28
    Completed 2004-02-13 23:28
    Status Complete
    Review Recommendation Test Suite Deficiency (TSD)
    Review Response This is accepted as a fault in the test suite.

    Review Type SA Review
    Start Date 2004-02-13 23:28
    Last Updated 2004-02-14 00:42
    Completed 2004-02-14 00:42
    Status Complete
    Review Resolution Test Suite Deficiency (TSD)
    Review Conclusion This PR represents and agreed test suite deficiency

    Problem Reporting System Options:

     

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