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Problem Report 1360 Details

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Report 1360 Actions

    Problem Report Number 1360
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0642
    Raised 1970-01-01 08:00
    Updated 2003-03-13 08:00
    Published 1997-01-10 08:00
    Product Standard Internationalised System Calls and Libraries Extended (UNIX 95)
    Certification Program The Open Brand certification program
    Test Suite VSU version 4.1.1
    Test Identification base/readv 22
    Problem Summary TSD4U.00175 This test may fail on implementations where the master pseudo-terminal device does not fully support the functionality of a terminal device.
    Problem Text
    This test may fail on implementations where the master pseudo-terminal
    device does not fully support the functionality of a terminal device.

    Routine test22A() in freadv22.c has this segment of code that is doing
    tcsetattr on the master device file descriptor (ie. tfd) and this
    fails causing the test purpose to return unresolved. The call should
    be made on the slave pseudo-terminal device.

    We believe the call to tcgetattr() constitutes a deficiency in the test
    suite. In calling tcgetattr() on the master device, the test assumes the
    master device supports the interface and functionality of a terminal device.
    While this is a documented requirement of a pseudo-terminal's slave device,
    it is not a documented requirement for the master device.

    The definition of pseudo-terminal appears on pages 25 and 26 of the System
    Interface Definitions Issue 4, Version 2. It states:

    A pseudo-terminal provides the process with an interface that is identical
    to the terminal subsystem. A pseudo-terminal is composed of 2 devices,
    the master device and a slave device. The slave device provides processes
    with an interface that is identical to the terminal interface, although
    there need not be hardware behind that interface. Anything written on
    the master device is presented to the slave as an input and anything
    written on the slave device is presented as an input on the master side.

    There is no requirement for the master device to provide terminal inter-
    face-style support in the pseudo-terminal definition. As such, the master
    device should not be expected to support the general terminal interface con-
    trol functions, of which tcgetattr() and tcsetattr() are a part. The test
    purpose should be rewritten so it doesn't depend upon non-required support
    from the master device.
    Test Output
    200|5656 1 17:10:47|TP Start
    520|5656 1 12187 1 1|SPEC1170TESTSUITE CASE 22
    520|5656 1 12187 1 2|A call to ssize_t readv(int fildes, const struct iovec
    520|5656 1 12187 1 3|*iov, int iovcnt) when the function is interrupted by
    520|5656 1 12187 1 4|a signal after it has successfully read some data
    520|5656 1 12187 1 5|shall return the number of bytes read.
    520|5656 1 12188 1 1|PREP: Read IOV_MAX system configuration
    520|5656 1 12188 1 2|PREP: Allocate and initialize I/O buffers
    520|5656 1 12189 1 1|PREP: Open and initialize the terminal files
    520|5656 1 12189 1 2|ERROR: tcgetattr failed, errno = 22(EINVAL - Invalid argument)
    520|5656 1 12189 1 3|ERROR: Termios_prep failed
    520|5656 1 12191 1 1|PREP: Open and initialize the terminal files
    520|5656 1 12191 1 2|ERROR: tcgetattr failed, errno = 22(EINVAL - Invalid argument)
    520|5656 1 12191 1 3|ERROR: Termios_prep failed
    520|5656 1 12188 3 1|CLEANUP: Free iovec buffers
    220|5656 1 2 17:10:47|UNRESOLVED

    or possibly...

    200|5656 1 06:25:34|TP Start
    520|5656 1 2030043204 1 1|SPEC1170TESTSUITE CASE 22
    520|5656 1 2030043204 1 2|A call to ssize_t readv(int fildes, const struct iovec
    520|5656 1 2030043204 1 3|*iov, int iovcnt) when the function is interrupted by
    520|5656 1 2030043204 1 4|a signal after it has successfully read some data
    520|5656 1 2030043204 1 5|shall return the number of bytes read.
    520|5656 1 1962934327 1 1|PREP: Read IOV_MAX system configuration
    520|5656 1 1962934327 1 2|PREP: Allocate and initialize I/O buffers
    520|5656 1 1677721665 1 1|PREP: Open and initialize the terminal files
    520|5656 1 1677721665 1 2|ERROR: tcsetattr failed, errno = 121(EINVAL - Invalid argument)
    520|5656 1 1694498881 1 1|PREP: Open and initialize the terminal files
    520|5656 1 1694498881 1 2|ERROR: tcsetattr failed, errno = 121(EINVAL - Invalid argument)
    520|5656 1 1962934327 3 1|CLEANUP: Free iovec buffers
    220|5656 1 2 06:25:35|UNRESOLVED

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    We agree this is a test suite deficiency in the test
    suite version(s) listed.

    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.

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