Home • About Us • A-Z Index • Search * Contact Us • Register • Login • Press • Shop

The Open Brand -- Problem Reporting and Interpretations System

Problem Report 1098 Details

Help Show help | Quick Search | Submit a Test Suite Support Request | Click here to view your privileges

This page provides all information on Problem Report 1098.

Report 1098 Actions

    Problem Report Number 1098
    Submitter's Classification Minor System Fault
    State Resolved
    Resolution Minor System Fault (MSF)
    Problem Resolution ID MSF.X.0047
    Raised 1970-01-01 08:00
    Updated 2003-03-13 08:00
    Published 1995-12-05 08:00
    Expiry Date 1996-12-05
    Product Standard Internationalised System Calls and Libraries Extended (UNIX 95)
    Certification Program The Open Brand certification program
    Test Suite VSU version 4.0.2
    Test Identification CAPIbase/ttyslot 1
    Problem Summary MSF4U.00006 A temporary waiver is requested because the ttyslot index returned is not ordinal to getutxent.
    Problem Text
    This test is failing due to an invalid assumption concerning the
    relationship between an index into the user accounting database
    and the order that entries are read out of the user accounting
    database. The user accounting database is mentioned in
    conjunction with ttyslot() and the six functions listed on the
    endutxent() page. The ttyslot() function returns an index into
    the database but there is no function that takes that index and
    returns the entry associated with the index.

    The test assumes that by reading the database sequentially it is
    reading in index order. This assumption is not supported by any
    statement in the specification. There is no stated correlation
    between indexes and the order in which the database is read.
    Test Output
    TEST CASE: ttyslot

    TEST PURPOSE #1
    A successful call to int ttyslot(void) shall return
    the index of an entry in the user accounting database
    in which the utline member matches the terminal device
    associated with the standard input, standard output,
    or standard error (file descriptor 0, 1 or 2) of the
    calling process.
    PREP: Find name of current terminal
    PREP: Close file descriptors
    PREP: Redirect stdin to /dev/null
    PREP: Redirect stdout to /dev/null
    PREP: Redirect stderr to /dev/null
    PREP: Associate /dev/ttyp6 with stdin
    TEST: Call ttyslot() to search for stdin entry
    TEST: ttyslot returned index of entry in utmpx database
    ERROR: Device names are not the same
    Expected ttyp6, received ttyp7
    1 FAIL

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    We tenatively recommend this request be refused after review.

    The ttyslot spec states

    The ttyslot() function returns the index of the current user's
    entry in the user accounting database. The current user's entry
    is an entry for which the utline member matches the name of a
    terminal device associated with any of the process' file
    descriptors 0, 1 or 2. The index is an ordinal number
    representing the record number in the database of the current
    user's entry. ...

    The key phrase here is that "the index is an ordinal number".
    But ordinal to what?

    Although there is no clear wording in the spec that mandates
    it, we believe this index must be ordinal to the order of records
    retrieved from the dataase using getutxent().

    Thus if ttyslot returns 5 the sixth call to getutxent should
    return the same record. (ttyslot uses 0 to represent the
    first record in the database.)

    Review Type Expert Group Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution No Resolution Given
    Review Conclusion
    The request should be granted as a temporary waiver. At the
    Watford meeting, the group agreed that the specification is
    right. If ttyslot() returns N, then N+1 calls of getutent() will
    return the correct entry. This does not imply that the entries
    are actually stored in a sequential order.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Minor System Fault (MSF)
    Review Conclusion
    A Temporary Waiver is granted.

    Problem Reporting System Options:

     

    Back   

Contact the Certification Authority