netdir man page on HP-UX

Man page or keyword search:  
man Server   10987 pages
apropos Keyword Search (all sections)
Output format
HP-UX logo
[printable version]

netdir(3N)							    netdir(3N)

NAME
       netdir:	netdir_getbyname(),  netdir_getbyaddr(),  netdir_free(),  net‐
       dir_options(),  taddr2uaddr(),  uaddr2taddr(),  netdir_perror(),	  net‐
       dir_sperror() - generic transport name-to-address translation

SYNOPSIS

DESCRIPTION
       These  routines provide a generic interface for name-to-address mapping
       that will work with all transport protocols.  This interface provides a
       generic	way  for programs to convert transport specific addresses into
       common structures and back again.  The structure, described on the net‐
       config(4) manual page, identifies the transport.

       The  routine maps the machine name and service name in the structure to
       a collection of addresses of the type understood by the transport iden‐
       tified  in  the structure.  This routine returns all addresses that are
       valid for that transport in the structure.  The structure contains  the
       following members:

       The structure contains the following members:

       accepts	some  special-case  host names.	 The host names are defined in
       The currently defined host names are:
       Represents the address to which local programs  will  bind  their  end‐
       points.	 differs  from the host name provided by (see gethostname(2)),
       which represents the address to which remote programs will  bind	 their
       endpoints.

       Represents any host accessible by this transport provider.
	      allows applications to specify a required service without speci‐
	      fying a particular host name.

       Represents the host address that can be used to connect to the local
	      host.

       Represents the address for all hosts
	      accessible by this transport provider.  Network requests to this
	      address will be received by all machines.

       All fields of the structure must be initialized.

       To find the address of a given host and service on all available trans‐
       ports, call the routine with each structure returned by (See getnetcon‐
       fig(3N)).

       The routine maps addresses to service names.  This routine returns ser‐
       vice, a list of host and service pairs that would yield	this  address.
       If  more	 than one tuple of host and service name is returned, then the
       first tuple contains the preferred host and service names:

       The function is used to free the structures allocated by	 the  name  to
       address	translation  routines.	The ptr parameter points to the struc‐
       ture that has to be freed.  The parameter identifies the structure:

       The universal address returned by should be freed by

       The routine is used to do all transport-specific setups and option man‐
       agement.	  fildes  is  the associated file descriptor.  option, fildes,
       and pointer_to_args are passed to the routine for the transport	speci‐
       fied in config.	Currently four values are defined for option:

       The  and	 routines  support translation between universal addresses and
       TLI type The routine takes a data structure and returns a pointer to  a
       string  that  contains  the  universal address.	It returns NULL if the
       conversion is not possible.  This is not	 a  fatal  condition  as  some
       transports may not support a universal address form.

       is the reverse of It returns the data structure for the given universal
       address.

       If a transport provider does not support an  option,  returns  and  the
       error message can be printed through or

       The specific actions of each option follow.
       Sets  the  transport  provider  up to allow broadcast, if the transport
       supports broadcast.  fildes is a file  descriptor  into	the  transport
       (i.e.,  the  result  of a of pointer_to_args is not used.  If this com‐
       pletes, broadcast  operations  may  be  performed  on  file  descriptor
       fildes.

       Allows the application to bind to a reserved port, if that concept
	      exists  for  the	transport provider.  fildes is an unbound file
	      descriptor into the  transport.	If  pointer_to_args  is	 NULL,
	      fildes  will be bound to a reserved port.	 If pointer_to_args is
	      a pointer to a structure, an attempt will be made to bind to any
	      reserved port on the specified address.

       Used to verify that the address corresponds to a reserved port,
	      if  that	concept	 exists for the transport provider.  fildes is
	      not used.	 pointer_to_args is a pointer to a structure that con‐
	      tains  the  address.   This  option  returns only if the address
	      specified in pointer_to_args is reserved.

       Used to take a "local address", such as a
	      TCP address,  and	 return	 a  "real  address"  to	 which	client
	      machines can connect.  fildes is not used.  pointer_to_args is a
	      pointer to a which has the following members:

	      If is an address such as and the call is successful, is  set  to
	      an address such as For most transports, is identical to

MULTITHREAD USAGE
       Thread Safe:	     Yes
       Cancel Safe:	     Yes
       Fork Safe:	     No
       Async-cancel Safe:    No
       Async-signal Safe:    No

       These  functions	 can  be called safely in a multithreaded environment.
       They may be cancellation points in that they call  functions  that  are
       cancel points.

       In  a  multithreaded  environment,  these  functions are not safe to be
       called by a child process after and before These functions  should  not
       be  called  by  a  multithreaded application that supports asynchronous
       cancellation or asynchronous signals.

RETURN VALUE
       The routine prints an error message on the standard output stating  why
       one  of the name-to-address mapping routines failed.  The error message
       is preceded by the string given as an argument.

       The returns a pointer to a  buffer  which  contains  an	error  message
       string  stating why one of the name-to-address mapping routines failed.
       This buffer is overwritten on each  call.   In  multithreaded  applica‐
       tions, this buffer is implemented as thread-specific data.

       The function returns on success and a non-zero value on failure.

SEE ALSO
       gethostname(2), getnetconfig(3N), getnetpath(3N), netconfig(4).

								    netdir(3N)
[top]

List of man pages available for HP-UX

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net