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Problem Report 2385 Details

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Report 2385 Actions

    Problem Report Number 2385
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.1232
    Raised 2004-05-28 04:40
    Updated 2004-06-05 03:23
    Published 2004-06-05 03:23
    Product Standard Internationalised System Calls and Libraries Extended V3 (UNIX 03)
    Certification Program The Open Brand certification program
    Test Suite VSU version 5.2.5
    Test Identification CAPI.os/procprim/_exit 3
    CAPI.os/genuts/exit 3
    Specification Base Definitions Issue 6
    Problem Summary exit 3 and _exit 3 call fclose() on a stream opened with popen() which
    causes later stream reads to fail.
    Problem Text The basic logic is to fork a child, have it call _exit while the parent
    sleeps 10 seconds. The parent then looks for the process by calling
    /bin/ps -p using popen, uses the returned stream to check the ps output
    line by line searching for the pid to determine the zombie exists.

    The first read of the output from ps works fine and the first subtest
    passes. The next time though the logic for the next wait, for unix03
    it is waitpid(), the read of the ps output fails and the test assumes
    the zombie does not exist and the test fails.

    The code that does the reading for all subtests:

    tet_infoline("PREP: Execute /bin/ps to get child's
    status");
    sprintf(ebuf, "/bin/ps -p %d", (int)pid);
    if((psfile = popen(ebuf, "r")) == (FILE *)NULL) {
    uwerrno("popen");
    return;
    }

    tet_infoline("TEST: Child is a zombie");
    /*
    ** Kill will not find this process but ps can...
    ** We loop until the process id is found. If it is not
    found
    ** then the process has been terminiated instead of
    being turned ** into a zombie...
    */
    found = 0;
    sprintf(pid_str, "%d", (int)pid);
    while(fgets(psline, sizeof(psline), psfile) != NULL) {
    if(strstr(psline, pid_str) != NULL) {
    found = 1;
    break;
    }
    }
    fclose(psfile);

    Notice the call fclose() on the stream. When these are replaced with
    calls to pclose(), all subtests pass. Although the standard does not
    require the useof pclose(), the SUSv3 rational implies that a pclose()
    should be used here.

    Since the area of functionality under test here is not the behavior of
    streams and fclose(), pclose() should be used here to prevent failures
    that are not related to the area under test.
    Test Output
    ***********************************************************************
    *
    /tset/CAPI.os/procprim/_exit/T._exit 3 Failed

    Test Description:
    Base Required Conformance
    When the parent process of the calling process is not executing
    wait(), waitpid(), wait3() or waitid() and has not set its
    SA_NOCLDWAIT flag nor set SIGCHLD to SIG_IGN a call to void
    _exit(int
    status) shall transform the calling process into a zombie
    process such
    that it shall be inactive but not deleted until subsequent
    execution
    of wait(), waitpid(), wait3() or waitid() by its parent
    process.
    Note: wait3() is only tested in UNIX98 mode.

    Test Information:
    PREP: Set SIGCHLD to SIG_DFL and clear SA_NOCLDWAIT
    PREP: Fork child
    PREP: Wait for child to exit plus a small amount of time
    PREP: Execute /bin/ps to get child's status
    TEST: Child is a zombie
    TEST: Subsequent wait notified of termination
    TEST: Lower 8-bits of status available
    PREP: Fork child
    PREP: Set child exiting event and call exit
    PREP: Wait for child to exit plus a small amount of time
    PREP: Execute /bin/ps to get child's status
    TEST: Child is a zombie
    ERROR: Process does not exist
    PREP: Set child exiting event and call exit


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


    ***********************************************************************
    *
    /tset/CAPI.os/genuts/exit/T.exit 3 Failed

    Test Description:
    Base Required Conformance
    When the parent process of the calling process is not executing
    wait(), waitpid(), wait3() or waitid() and has not set its
    SA_NOCLDWAIT flag nor set SIGCHLD to SIG_IGN a call to void
    exit(int
    status) shall transform the calling process into a zombie
    process such
    that it shall be inactive but not deleted until subsequent
    execution
    of wait(), waitpid(), wait3() or waitid() by its parent
    process.
    Note: wait3() is only tested in UNIX98 mode.

    Test Information:
    PREP: Set SIGCHLD to SIG_DFL and clear SA_NOCLDWAIT
    PREP: Fork child
    PREP: Wait for child to exit plus a small amount of time
    PREP: Execute /bin/ps to get child's status
    TEST: Child is a zombie
    TEST: Subsequent wait notified of termination
    TEST: Lower 8-bits of status available
    PREP: Fork child
    PREP: Set child exiting event and call exit
    PREP: Wait for child to exit plus a small amount of time
    PREP: Execute /bin/ps to get child's status
    TEST: Child is a zombie
    ERROR: Process does not exist
    PREP: Set child exiting event and call exit


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

    Review Information

    Review Type TSMA Review
    Start Date 2004-05-28 04:40
    Last Updated 2004-05-28 17:51
    Completed 2004-05-28 17:51
    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 2004-05-28 16:51
    Last Updated 2004-06-02 00:28
    Completed 2004-06-02 00:28
    Status Complete
    Review Resolution Test Suite Deficiency (TSD)
    Review Conclusion This PR represents an agreed test suite deficiency.

    Problem Reporting System Options:

     

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