GETNETPATH(3N-SVR4) RISC/os Reference Manual  GETNETPATH(3N-SVR4)



NAME
     getnetpath - get /etc/netconfig entry corresponding to NET-
          PATH component

SYNOPSIS
     #include <netconfig.h>

     void *
     setnetpath()
     struct netconfig *
     getnetpath(handlep);
     void * handlep;

     int
     endnetpath(handlep);
     void * handlep;

DESCRIPTION
     The three routines described on this page are part of the
     UNIX System V Network Selection component.  They provide
     application access to the system network configuration data-
     base, /etc/netconfig, as it is filtered by the NETPATH
     environment variable (see environ(5)).  Network Selection
     also includes routines that access the network configuration
     database directly (see getnetconfig(3N)).

     A call to setnetpath() binds or rewinds NETPATH. setnet-
     path() must be called before the first call to getnetpath()
     and may be called at any other time.  It returns a handle
     that is used by getnetpath.  setnetpath() will fail if the
     netconfig database is not present.  If NETPATH is unset,
     setnetpath() returns the number of visible networks in the
     netconfig file.  The set of visible networks constitutes a
     default NETPATH.

     When first called, getnetpath() returns a pointer to the
     netconfig database entry corresponding to the first valid
     NETPATH component.  The netconfig entry is formatted as a
     struct netconfig.  On each subsequent call, getnetpath
     returns a pointer to the netconfig entry that corresponds to
     the next valid NETPATH component.  getnetpath() can thus be
     used to search the netconfig database for all networks
     included in the NETPATH variable.  When NETPATH has been
     exhausted, getnetpath() returns NULL.

     getnetpath() silently ignores invalid NETPATH components.  A
     NETPATH component is invalid if there is no corresponding
     entry in the netconfig database.

     If the NETPATH variable is unset, getnetpath() behaves as if
     NETPATH were set to the sequence of default or visible net-
     works in the netconfig database, in the order in which they
     are listed.



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GETNETPATH(3N-SVR4) RISC/os Reference Manual  GETNETPATH(3N-SVR4)



     endnetpath() may be called to unbind NETPATH when processing
     is complete, releasing resources for reuse.  Programmer's
     should be aware, however, that endnetpath() frees all memory
     allocated by setnetpath().  endnetpath() returns 0 on suc-
     cess and -1 on failure (e.g., if setnetpath() was not called
     previously).

SEE ALSO
     netconfig(4), getnetconfig(3N), environ(5).
     Network Programmer's Guide.
     System Administrator's Guide.












































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