1/* 2 * $Id: atp_open.c,v 1.5 2001-08-15 02:17:57 srittau Exp $ 3 * 4 * Copyright (c) 1990,1991 Regents of The University of Michigan. 5 * All Rights Reserved. 6 * 7 * Permission to use, copy, modify, and distribute this software and 8 * its documentation for any purpose and without fee is hereby granted, 9 * provided that the above copyright notice appears in all copies and 10 * that both that copyright notice and this permission notice appear 11 * in supporting documentation, and that the name of The University 12 * of Michigan not be used in advertising or publicity pertaining to 13 * distribution of the software without specific, written prior 14 * permission. This software is supplied as is without expressed or 15 * implied warranties of any kind. 16 * 17 * Research Systems Unix Group 18 * The University of Michigan 19 * c/o Mike Clark 20 * 535 W. William Street 21 * Ann Arbor, Michigan 22 * +1-313-763-0525 23 * netatalk@itd.umich.edu 24 */ 25 26#ifdef HAVE_CONFIG_H 27#include "config.h" 28#endif /* HAVE_CONFIG_H */ 29 30#include <stdlib.h> 31#include <string.h> 32#include <sys/types.h> 33#include <sys/time.h> 34#include <sys/param.h> 35#include <sys/socket.h> 36 37#include <netatalk/at.h> 38#include <netatalk/endian.h> 39 40#include <atalk/netddp.h> 41#include <atalk/ddp.h> 42#include <atalk/atp.h> 43 44#include "atp_internals.h" 45 46ATP atp_open(u_int8_t port, const struct at_addr *saddr) 47{ 48 struct sockaddr_at addr; 49 int s; 50 ATP atp; 51 struct timeval tv; 52 int pid; 53 54#ifdef DEBUG 55 printf( "<%d> atp_open\n", getpid()); 56#endif /* DEBUG */ 57 58 memset(&addr, 0, sizeof(addr)); 59 addr.sat_port = port; 60 if (saddr) 61 memcpy(&addr.sat_addr, saddr, sizeof(struct at_addr)); 62 if ((s = netddp_open(&addr, NULL)) < 0) 63 return NULL; 64 65 if (( atp = (ATP) atp_alloc_buf()) == NULL ) { 66 netddp_close(s); 67 return NULL; 68 } 69 70 /* initialize the atp handle */ 71 memset(atp, 0, sizeof( struct atp_handle )); 72 memcpy(&atp->atph_saddr, &addr, sizeof(addr)); 73 74 atp->atph_socket = s; 75 atp->atph_reqto = -1; 76 gettimeofday( &tv, (struct timezone *) 0 ); 77 pid = getpid(); 78 atp->atph_tid = tv.tv_sec ^ ((( pid << 8 ) & 0xff00 ) | ( pid >> 8 )); 79 80#ifdef EBUG 81srandom( tv.tv_sec ); 82#endif /* EBUG */ 83 84 return atp; 85} 86