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    Command:

    setprotoent

    
    
    
    

    SYNOPSIS

           #include <netdb.h>
    
           struct protoent *getprotoent(void);
    
           struct protoent *getprotobyname(const char *name);
    
           struct protoent *getprotobynumber(int proto);
    
           void setprotoent(int stayopen);
    
           void endprotoent(void);
    
    
    

    DESCRIPTION

           The getprotoent() function reads the  next  entry  from  the  protocols
           database (see protocols(5)) and returns a protoent structure containing
           the broken-out fields from the entry.  A connection is  opened  to  the
           database if necessary.
    
           The  getprotobyname()  function  returns  a  protoent structure for the
           entry from the database that matches the protocol name name.  A connec-
           tion is opened to the database if necessary.
    
           The  getprotobynumber()  function  returns a protoent structure for the
           entry from the database that matches the  protocol  number  number.   A
           connection is opened to the database if necessary.
    
           The setprotoent() function opens a connection to the database, and sets
           the next entry to the first entry.  If stayopen is  nonzero,  then  the
           connection  to  the database will not be closed between calls to one of
           the getproto*() functions.
    
           The endprotoent() function closes the connection to the database.
    
           The protoent structure is defined in <netdb.h> as follows:
    
               struct protoent {
                   char  *p_name;       /* official protocol name */
                   char **p_aliases;    /* alias list */
                   int    p_proto;      /* protocol number */
               }
    
           The members of the protoent structure are:
    
           p_name The official name of the protocol.
    
           p_aliases
                  A NULL-terminated list of alternative names for the protocol.
    
           p_proto
                  The protocol number.
    
           getnetent(3), getprotoent_r(3), getservent(3), protocols(5)
    
    
    

    GNU 2008-08-19 GETPROTOENT(3)

    
    
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