VMS Help System Services, $CRELNT, Arguments  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 attr

    OpenVMS usage:mask_longword
    type:         longword (unsigned)
    access:       read only
    mechanism:    by 32- or 64-bit reference (Alpha)
    mechanism:    by 32-bit reference (VAX)
    Attributes to affect the creation of the logical name table and
    to be associated with the newly created logical name table. The
    attr argument is the 32-bit address (on VAX systems) or the 32-
    or 64-bit address (on Alpha systems) of a longword bit mask
    specifying these attributes.

    Each bit in the longword corresponds to an attribute and has a
    symbolic name. These symbolic names are defined by the $LNMDEF
    macro. To specify an attribute, specify its symbolic name or set
    its corresponding bit. The longword bit mask is the logical OR of
    all desired attributes. All unused bits in the longword must be
    0.

    If you do not specify this argument or specify it as 0 (no bits
    set), no attributes are associated with the logical name table or
    affect the creation of the new table.

    The following table describes each attribute:

    Attribute       Description

    LNM$M_CONFINE   If set, the logical name table is not copied
                    from the process to its spawned subprocesses. You
                    create a subprocess with the DCL command SPAWN or
                    the Run-Time Library LIB$SPAWN routine. You can
                    specify this attribute only for process-private
                    logical name tables; it is ignored for shareable
                    tables.

                    The state of this bit is also propagated from
                    the parent table to the newly created table
                    and can be overridden only if the parent table
                    does not have the bit set. Thus, if the parent
                    table has the LNM$M_CONFINE attribute, the newly
                    created table will also have it, no matter what
                    is specified in the attr argument. On the other
                    hand, if the parent table does not have the
                    LNM$M_CONFINE attribute, the newly created table
                    can be given this attribute through the attr
                    argument.

                    The process-private directory table LNM$PROCESS_
                    DIRECTORY does not have the LNM$M_CONFINE
                    attribute.

    LNM$M_CREATE_   This attribute applies to all types of logical
    IF              name tables except clusterwide logical name
                    tables. If set, a new logical name table is
                    created only if the specified table name is not
                    already entered at the specified access mode in
                    the appropriate directory table. If the table
                    name exists, a new table is not created and no
                    modification is made to the existing table name.
                    This holds true even if the existing name has
                    differing attributes or quota values, or even if
                    it is not the name of a logical name table.

                    If LNM$M_CREATE_IF is not set, the new logical
                    name table will supersede any existing table name
                    with the same access mode within the appropriate
                    directory table. Setting this attribute is useful
                    when two or more users want to create and use
                    the same table but do not want to synchronize its
                    creation.

                    Regardless of the setting of LNM$M_CREATE_IF:

                    o  You cannot create a new clusterwide logical
                       name table with the same name and the same
                       mode as an existing clusterwide logical name
                       table until you delete the existing one.

                    o  If you specify a new clusterwide logical name
                       table with the same name and access mode as
                       an existing local logical name table, the new
                       clusterwide logical name table is created,
                       and the local table and its logical names are
                       deleted.

    LNM$M_NO_       If set, the name of the logical name table cannot
    ALIAS           be duplicated at an outer access mode within the
                    appropriate directory table. If this name already
                    exists at an outer access mode, it is deleted.

 resnam

    OpenVMS usage:logical_name
    type:         character-coded text string
    access:       write only
    mechanism:    by 32- or 64-bit descriptor-fixed-length string
                  descriptor (Alpha)
    mechanism:    by 32-bit descriptor-fixed-length string descriptor
                  (VAX)
    Name of the newly created logical name table, returned by
    $CRELNT. The resnam argument is the 32-bit address (on VAX
    systems) or the 32- or 64-bit address (on Alpha systems) of a
    descriptor pointing to this name. The name is a character string
    whose maximum length is 31 characters.

 reslen

    OpenVMS usage:word_unsigned
    type:         word (unsigned)
    access:       write only
    mechanism:    by 32- or 64-bit reference (Alpha)
    mechanism:    by 32-bit reference (VAX)
    Length in bytes of the name of the newly created logical name
    table, returned by $CRELNT. The reslen argument is the 32-bit
    address (on VAX systems) or the 32- or 64-bit address (on Alpha
    systems) of a word to receive this length.

 quota

    OpenVMS usage:longword_unsigned
    type:         longword (unsigned)
    access:       read only
    mechanism:    by 32- or 64-bit reference (Alpha)
    mechanism:    by 32-bit reference (VAX)
    Maximum number of bytes of memory to be allocated for logical
    names contained in this logical name table. The quota argument is
    the 32-bit address (on VAX systems) or the 32- or 64-bit address
    (on Alpha systems) of a longword specifying this value.

    If you specify no quota value, the logical name table has an
    infinite quota. Note that a shareable table created with infinite
    quota permits users with write access to that table to consume
    system dynamic memory without limit.

 promsk

    OpenVMS usage:file_protection
    type:         word (unsigned)
    access:       read only
    mechanism:    by 32- or 64-bit reference (Alpha)
    mechanism:    by 32-bit reference (VAX)
    Protection mask to be associated with the newly created shareable
    logical name table. The promsk argument is the 32-bit address (on
    VAX systems) or the 32- or 64-bit address (on Alpha systems) of
    a word that contains a value that represents four 4-bit fields.
    Each field grants or denies the type of access, either delete,
    create, write, or read, allowed for system, owner, group, and
    world users.

    The following diagram depicts these protection bits:

            |------------|------------|------------|------------|
            |   World    |    Group   |   Owner    |   System   |
            |------------|------------|------------|------------|
            | D  C  W  R | D  C  W  R | D  C  W  R | D  C  W  R |
            |------------|------------|------------|------------|
             15 14 13 12  11 10  9  8   7  6  5  4   3  2  1  0

    Create access is required to create a shareable table within
    another shareable table.

    Each field consists of 4 bits specifying protection for the
    logical name table. The remaining bits in the protection mask
    are as follows:

    o  Read privileges allow access to names in the logical name
       table.

    o  Write privileges allow creation and deletion of names within
       the logical name table.

    o  Delete privileges allow deletion of the logical name table.

    If a bit is clear, access is granted.

    The initial security profile for any shared logical name table is
    taken from the logical name table template. The owner is then set
    to the process UIC and, if the promsk argument is nonzero, that
    value replaces the protection mask.

 tabnam

    OpenVMS usage:logical_name
    type:         character-coded text string
    access:       read only
    mechanism:    by 32- or 64-bit descriptor-fixed-length string
                  descriptor (Alpha)
    mechanism:    by 32-bit descriptor-fixed-length string
                  descriptor(VAX)
    The name of the new logical name table. The tabnam argument is
    the 32-bit address (on VAX systems) or the 32- or 64-bit address
    (on Alpha systems) of a character-string descriptor pointing to
    this name string. Table names are contained in either the process
    or system directory table (LNM$PROCESS_DIRECTORY or LNM$SYSTEM_
    DIRECTORY); therefore, table names must consist of alphanumeric
    characters, dollar signs ($),  and underscores (_); the maximum
    length is 31 characters. Names of logical name tables must be in
    uppercase latters. If you specify a lowercase name, the $CRELNT
    service automatically changes it to uppercase.

    This argument is required for clusterwide logical name tables.
    For all other logical name tables, if you do not specify this
    argument, a default name in the format LNM$xxxx is used, where
    xxxx is a unique hexadecimal number.

    You need SYSPRV privilege or write access to LNM$SYSTEM_DIRECTORY
    to specify the name of a shareable logical name table.

 partab

    OpenVMS usage:char_string
    type:         character-coded text string
    access:       read only
    mechanism:    by 32- or 64-bit descriptor-fixed-length string
                  descriptor (Alpha)
    mechanism:    by 32-bit descriptor-fixed-length string descriptor
                  (VAX)
    Name string for the parent table name. The partab argument is the
    32-bit address (on VAX systems) or the 32- or 64-bit address (on
    Alpha systems) of a character string descriptor pointing to this
    name string.

    If the parent table is shareable, then the newly created table
    is shareable and is entered into the system directory LNM$SYSTEM_
    DIRECTORY. If the parent table is process-private, then the newly
    created table is process-private and is entered in the process
    directory LNM$PROCESS_DIRECTORY.

    You need SYSPRV privilege or write access to the system directory
    table to create a named shareable table. This argument is
    required.

 acmode

    OpenVMS usage:access_mode
    type:         byte (unsigned)
    access:       read only
    mechanism:    by 32- or 64-bit reference (Alpha)
    mechanism:    by 32-bit reference (VAX)
    Access mode to be associated with the newly created logical
    name table. The acmode argument is the 32-bit address (on VAX
    systems) or the 32- or 64-bit address (on Alpha systems) of
    a byte containing this access mode. The $PSLDEF macro defines
    symbolic names for the four access modes.

    If you do not specify the acmode argument or specify it as 0, the
    access mode of the caller is associated with the newly created
    logical name table.

    The access mode associated with the logical name table is
    determined by maximizing the access mode of the caller with the
    access mode specified by the acmode. The less privileged of the
    two access modes is used.

    However, if the caller has SYSNAM privilege, then the specified
    access mode is associated with the logical name table, regardless
    of the access mode of the caller.

    Access modes associated with logical name tables govern logical
    name table processing and provide a protection mechanism that
    prevents the deletion of inner access mode logical name tables
    by nonprivileged users. You cannot specify an access mode more
    privileged than that of the parent table.

    A logical name table with supervisor mode access can contain
    supervisor mode and user mode logical names and can be a parent
    to supervisor mode and user mode logical name tables, but cannot
    contain executive or kernel mode logical names or be a parent to
    executive or kernel mode logical name tables.

    You need SYSNAM privilege to specify executive or kernel mode
    access for a logical name table.