getservbyport - phpMan

GETSERVENT(3)              Linux Programmer's Manual             GETSERVENT(3)



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

SYNOPSIS
       #include <netdb.h>

       struct servent *getservent(void);

       struct servent *getservbyname(const char *name, const char *proto);

       struct servent *getservbyport(int port, const char *proto);

       void setservent(int stayopen);

       void endservent(void);

DESCRIPTION
       The getservent() function reads the next  line  from  the  file  /etc/services  and
       returns  a  structure  servent containing the broken out fields from the line.  The
       /etc/services file is opened if necessary.

       The getservbyname()  function  returns  a  servent  structure  for  the  line  from
       /etc/services that matches the service name using protocol proto. If proto is NULL,
       any protocol will be matched.

       The getservbyport() function returns a servent structure for the line that  matches
       the  port  port given in network byte order using protocol proto. If proto is NULL,
       any protocol will be matched.

       The setservent() function opens and rewinds the /etc/services file.  If stayopen is
       true  (1),  then  the  file will not be closed between calls to getservbyname() and
       getservbyport().

       The endservent() function closes /etc/services.

       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 getservent(), getservbyname() and getservbyport() functions return the  servent
       structure,  or a NULL pointer if an error occurs or the end of the file is reached.

FILES
       /etc/services
              services database file

CONFORMING TO
       4.3BSD, POSIX.1-2001.

SEE ALSO
       getnetent(3), getprotoent(3), services(5)



BSD                               2001-07-25                     GETSERVENT(3)

Generated by $Id: phpMan.php,v 4.54 2007/08/21 09:05:22 chedong Exp $ Author: Che Dong
On Apache/2.2.3 (Red Hat)
Under GNU General Public License
2009-11-09 19:42 @127.0.0.1 CrawledBy CCBot/1.0 (+http://www.commoncrawl.org/bot.html)