getservent(3N)

get service entry

From the original Amiga UNIX 2.1 manual. Some things it mentions may not be in this release.

NAME

getservent, getservbyport, getservbyname, setservent, endservent - get service entry

SYNOPSIS

#include <netdb.h>
struct servent *getservent()
struct servent *getservbyname(name, proto)
char *name, *proto;
struct servent *getservbyport(port, proto)
int port;
char *proto;
setservent(stayopen)
int stayopen;
endservent()

DESCRIPTION

getservent(),  getservbyname(),  and  getservbyport()   each
return  a  pointer to an object with the following structure
containing the broken-out fields of a line  in  the  network
services data base, /etc/services.
     struct    servent {
          char *s_name;        /* official name of service */
          char **s_aliases;    /* alias list */
          int  s_port;         /* port service resides at */
          char *s_proto;       /* protocol to use */
     };
The members of this structure are:

s_name The official name of the service.

s_aliases A zero terminated list of alternate names for the service.

s_port The port number at which the service resides. Port numbers are returned in network short byte order.

     s_proto             The name of  the  protocol  to  use
                         when contacting the service.
getservent() reads the next line of the  file,  opening  the
file if necessary.  setservent() opens and rewinds the file.
If the stayopen flag is non-zero, the net data base will not
be  closed after each call to getservent() (either directly,
or indirectly through one of  the  other  "getserv"  calls).
endservent()  closes  the  file.   getservbyname()  and get-
servbyport() sequentially search from the beginning  of  the
file until a matching protocol name or port number is found,
or until EOF is encountered.  If a  protocol  name  is  also
supplied (non-NULL), searches must also match the protocol.

FILES

/etc/services

DIAGNOSTICS