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Problem Report 2615 Details

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Report 2615 Actions

    Problem Report Number 2615
    Submitter's Classification Specification problem
    State Resolved
    Resolution Permanent Interpretation (PIN)
    Problem Resolution ID PIN.X.0290
    Raised 2016-05-06 22:13
    Updated 2016-05-06 14:33
    Published 2016-05-06 14:33
    Product Standard Internationalised System Calls and Libraries Extended V4 (UNIX V7)
    Certification Program The Open Brand certification program
    Test Suite VSX4 version 4.7.10
    Test Identification POSIX.os/devclass/c_iflag 19
    Specification Base Specifications Issue 7
    Location in Spec See Problem Text
    Linked Problem Reports 2518
    Problem Summary Our system (SVR4 based) does not support locally connected asynchronous
    terminals. In order to run VSX tests, we use a pseudo-tty loopback to si...
    Problem Text .
    Summary of tests failed:

    POSIX.os/devclass/c_iflag 19

    Our system (SVR4 based) does not support locally connected
    asynchronous
    terminals. In order to run VSX tests, we use a pseudo-tty loopback to
    simulate
    the hardware terminal interface. Because of the limitations on software
    simulation, hardware related features are not supported, such as parity
    generation/detection, character size, and START/STOP characters.

    This failure is related to the hardware features of a asynchronous
    terminal. For this reason, we request a waiver for it.
    Test Output
    ************************************************************************
    /tset/POSIX.os/devclass/c_iflag/T.c_iflag 19 Failed

    Test Description:
    If general terminal interface supported:
    When IXOFF is set the system shall transmit one or more STOP
    characters as needed to prevent the number of characters in the
    input queue from exceeding its capacity. The system shall
    transmit
    one or more START characters as needed to start transmitting
    data.
    CONDITIONAL: If _POSIX_MAX_INPUT <= MAX_INPUT <= PCTS_MAX_INPUT
    assertion is base (type C) otherwise assertion is extended (type
    D).
    Posix Ref: Component Settable Parameters Assertion
    7.1.2.2-32(C:D)
    Posix Ref: Component Settable Parameters Assertion
    7.1.2.2-33(C:D)

    Test Strategy:
    OPEN and initialise terminal file and loop back file (having SAME
    parity)
    OBTAIN max_input from fpathconf(tty_fildes, _PC_MAX_INPUT)
    SET IXON, VMIN=0 and VTIME=10 in loop back control flags
    CLEAR ICANON in loop back control flags
    SET IXOFF, VMIN=0 and VTIME=10 in terminal control flags
    CLEAR ICANON in terminal control flags
    CREATE child process
    UNTIL a timeout occurs
    SET TIMEOUT of WAITTIME/2 seconds
    WRITE string to loop back file
    FLUSH output queue on loop back file using tcflush(fd, TCOFLUSH)
    READ entire input queue from terminal file
    SET capacity to the greater of the number of bytes read and
    max_input
    CLEAR IXON in loop back control flags
    UNTIL capacity bytes have been written
    WRITE string to loop back file
    SLEEP to allow data to transfer to terminal file
    READ from loop back file
    VERIFY that read() read at least one STOP character
    UNTIL capacity bytes have been read or a read error occurs
    READ from terminal file
    SLEEP to allow more data to become available
    VERIFY that capacity bytes in total were read
    READ from loop back file
    VERIFY that read() read at least one START character

    Test Information:
    after input queue filled to 1598 bytes, attempt
    to read() STOP character(s) returned 0, expected >= 1

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

    Review Information

    Review Type SA Review
    Start Date 2016-05-06 22:13
    Last Updated 2016-05-06 14:33
    Completed 2016-05-06 14:33
    Status Complete
    Review Resolution Permanent Interpretation (PIN)
    Review Conclusion A permanent interpretation is granted.

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