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NAME
fns_references - overview of FNS References
DESCRIPTION
Every composite name in FNS is bound to a reference. A
reference consists of a type and a list of addresses. The
reference type is used to identify the type of object.
An address is something that can be used with some communi-
cation mechanism to invoke operations on an object or ser-
vice. Multiple addresses are intended to identify multiple
communication endpoints for a single conceptual object or
service. Each address in a reference consists of an address
type and an opaque buffer. The address type determines the
format and interpretation of the address data. Together,
the address's type and data specify how to reach the object.
Many communication mechanisms are possible; FNS does not
place any restrictions on them.
The following summarizes the reference and address types
that are currently defined. New types should be registered
with the Federated Naming Group at SunSoft.
Reference Types
All reference types use the FN_ID_STRING identifier format
unless otherwise qualified.
onc_fn_enterprise
Enterprise root context.
onc_fn_organization
A context for naming objects related to an organiza-
tional unit.
onc_fn_hostname
A context for naming hosts.
onc_fn_username
A context for naming users.
onc_fn_user
A context for naming objects related to a user.
onc_fn_host
A context for naming objects related to a computer.
onc_fn_site
A context for naming sites.
onc_fn_service
A context for naming services.
onc_fn_nsid
A context for naming namespace identifiers.
onc_fn_generic
A context for naming application-specific objects.
onc_fn_fs
A context for naming files, directories, and file sys-
tems.
onc_fn_printername
A context for naming printers.
onc_printers
A printer object. When implemented on top of NIS+,
this could also be a context for naming printers.
fn_link_ref
An XFN link.
inet_domain
An Internet domain.
Address Types
All address types use the FN_ID_STRING identifier format
unless otherwise qualified. The format of address contents
is determined by the corresponding address type.
onc_fn_nisplus
For an FNS enterprise-level object implemented on top
of NIS+. The address contains the context type, con-
text representation type (either normal or merged),
version number of the reference, and the NIS+ name of
the object. The only intended use of this reference is
that it be passed to fn_ctx_handle_from_ref(3XFN)
onc_fn_nis
For an FNS enterprise-level object implemented on top
of NIS. The address contains the context type and ver-
sion number of the reference, and the NIS name of the
object. The only intended use of this reference is
that it be passed to fn_ctx_handle_from_ref(3XFN).
onc_fn_files
For an FNS enterprise-level object implemented on top
of /etc files. The address contains the context type
and version number of the reference, and the location
of the object in the /etc file system. The only
intended use of this reference is that it be passed to
fn_ctx_handle_from_ref(3XFN).
onc_fn_fs_user
For a user's home directory. The address contains the
user's name and the name of the naming service pass-
word table where the user's home directory is stored.
onc_fn_fs_user_nisplus
For a user's home directory. The address contains the
user's name and the name of the NIS+ password table
where the user's home directory is stored.
onc_fn_fs_host
For all file systems exported by a host. The address
contains the host's name.
onc_fn_fs_mount
For a single mount point. The address contains the
mount options, the name of the servers and the
exported path. See mount(1M).
onc_fn_printer_files
For a printer's address in the files naming service.
onc_fn_printer_nis
For a printer's address in the NIS naming service.
onc_fn_printer_nisplus
For a printer's address in the NIS+ naming service.
fn_link_addr
For an XFN link address. The contents is the string
form of the composite name.
inet_domain
For an Internet domain. The address contains the
fully-qualified domain name (for example, "Wiz.COM.")
inet_ipaddr_string
For an object with an Internet address. The address
contains an internet IP address in dotted string form
(for example, "192.144.2.3").
x500 For an X.500 object. The address contains an X.500
Distinguished Name, in the syntax specified in the
X/Open DCE: Directory Services.
osi_paddr
For an object with an OSI presentation address. The
address contains the string encoding of an OSI Presen-
tation Address as defined in A string encoding of
Presentation Address (RFC 1278).
onc_printers_bsaddr
For a printer that understands the BSD print protocol.
The address contains the machine name and printer name
used by the protocol.
onc_printers_use
For a printer alias. The address contains a printer
name.
onc_printers_all
For a list of printers that are enumerated using the
"all" option. The address contains a list of printer
names.
onc_printers_location
For a printer's location. The address format is
unspecified.
onc_printers_type
For a printer's type. The address format is unspeci-
fied.
onc_printers_speed
For a printer's speed. The address format is unspeci-
fied.
SEE ALSO
mount(1M), fn_ctx_handle_from_ref(3XFN), xfn(3XFN), fns(5),
fns_policies(5)
Hardcastle-Kille, S.E., A string encoding of Presentation
Address, RFC 1278, University College London, November 1991.
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