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NAME
getservent, getservbyname, getservbyport - get service entry
SYNOPSIS
#include <network.h>
struct servent *getservbyname(const char *name, const char *proto);
struct servent *getservbyport(int port, const char *proto);
DESCRIPTION
The getservbyname() function returns a servent structure
for the line from /etc/services that matches the service
name using protocol proto.
The getservbyport() function returns a servent structure
for the line that matches the port port given in network
byte order using protocol proto.
The servent structure is defined in <netdb.h> as follows:
struct servent {
char *s_name; /* official service name */
char **s_aliases; /* alias list */
int s_port; /* port number */
char *s_proto; /* protocol to use */
}
The members of the servent structure are:
s_name The official name of the service.
s_aliases
A zero terminated list of alternative names for the
service.
s_port The port number for the service given in network
byte order.
s_proto
The name of the protocol to use with this service.
RETURN VALUE
The getservbyname() and getservbyport()
functions return the servent structure, or a NULL pointer
if an error occurs.
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