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Problem Report 0466 Details

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Report 0466 Actions

    Problem Report Number 0466
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Rejected (REJ)
    Problem Resolution ID REJ.X.0085
    Raised 1994-03-08 08:00
    Updated 2003-03-13 08:00
    Published null
    Product Standard Internationalised System Calls and Libraries (XPG4)
    Certification Program The Open Brand certification program
    Test Suite VSX4 version 4.3.4
    Test Identification POSIX.os/devclass/i_spchars 18, 22
    Problem Summary PG4R.086 The i_spchars test cases 18 and 22 have problems because they assume that the IEXTEN terminal attribute is off when a terminal is opened, rather than explicitly turning IEXTEN off. This causes problem...
    Problem Text

    The i_spchars test cases 18 and 22 have problems because they
    assume that the IEXTEN terminal attribute is off when a terminal
    is opened, rather than explicitly turning IEXTEN off. This
    causes problems when the RUNMODES for the terminal have
    IEXTEN on. One such problem is with the LNEXT character. When
    IEXTEN is on, LNEXT processing is in effect, causing any
    LNEXT characters read by the TTY to be lost. Tests 18 and 22
    create a string to be sent from the loopback to the tty by
    looping through all 256 characters, and excluding those
    characters that are in the struct termios c_cc[] array, but only
    those characters that are in the POSIX standard. Additional
    characters, like LNEXT, DSUSP, DISCARD, EOL2, and REPRINT are
    still included within the string.

    These tests should be reworked to explicitly turn on those
    attribute combinations being tested, so no stray attributes like
    IEXTEN cause problems.
    Test Output
    ***********************************************************************
    /tset/POSIX.os/devclass/i_spchars/T.i_spchars 18 Failed

    Test Description:
    If general terminal interface supported:
    If _POSIX_VDISABLE is in effect for the terminal file, for each of
    the special characters INTR, QUIT, ERASE, KILL, EOF and EOL, when
    the value of the special character is set to the value
    _POSIX_VDISABLE (obtained from fpathconf()), then the action
    associated with that special character does not occur for any
    character received.
    Posix Ref: Component Terminal Interface Assertion 7.1.1.9-64(C)
    Posix Ref: Component FPATHCONF Assertion 5.7.1.2-25(A)

    Test Strategy:
    OPEN and initialise terminal file and loop back file
    CLEAR NOFLSH and set ICANON and ISIG in terminal control flags
    FOR each of the special characters (INTR, QUIT, ERASE, KILL, EOF,
    EOL):
    SET value of special character to _POSIX_VDISABLE
    WRITE all non-special characters (last one NL) to loop back file
    READ from terminal file
    VERIFY that read() read all data written
    VERIFY that special processing is disabled
    VERIFY that all other special characters' functions are enabled

    Test Information:
    with ERASE set to _POSIX_VDISABLE, read() from VSX_TERMIOS_TTY returned
    248, expected 249
    ************************************************************************

    ************************************************************************
    /tset/POSIX.os/devclass/i_spchars/T.i_spchars 22 Failed

    Test Description:
    If general terminal interface supported:
    If _POSIX_VDISABLE is in effect for the terminal file, for each of
    the special characters INTR, QUIT, ERASE, KILL, EOF and EOL, when
    the value of the special character is set to the value
    _POSIX_VDISABLE (obtained from pathconf()), then the action
    associated with that special character does not occur for any
    character received.
    Posix Ref: Component Terminal Interface Assertion 7.1.1.9-64(C)
    Posix Ref: Component PATHCONF Assertion 5.7.1.2-47(A)

    Test Strategy:
    OPEN and initialise terminal file and loop back file
    CLEAR NOFLSH and set ICANON and ISIG in terminal control flags
    FOR each of the special characters (INTR, QUIT, ERASE, KILL, EOF,
    EOL):
    SET value of special character to _POSIX_VDISABLE
    WRITE all non-special characters (last one NL) to loop back file
    READ from terminal file
    VERIFY that read() read all data written
    VERIFY that special processing is disabled
    VERIFY that all other special characters' functions are enabled

    Test Information:
    with ERASE set to _POSIX_VDISABLE, read() from VSX_TERMIOS_TTY returned
    248, expected 249
    ************************************************************************

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    The submitter's analysis of these tests is incorrect. The IEXTEN flag
    is explicitly cleared after each terminal is opened. This is done in the
    functions tty_init() and loop_init() in SRC/common/tsetlib/termios.c.
    These functions are called from termios_prep() which is used by the
    i_spchars testset to open and initialise the loopback terminals.

    It is recommended that this request be refused.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Rejected (REJ)
    Review Conclusion
    This request is refused.

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