source: rtems/cpukit/librpc/src/rpc/rtime.c @ 57cfaad

4.104.114.84.95
Last change on this file since 57cfaad was 57cfaad, checked in by Joel Sherrill <joel.sherrill@…>, on Oct 31, 2000 at 4:39:06 PM

2000-10-30 Joel Sherrill <joel@…>

  • POSIX include files merged into newlib. This resulted in some definitions moving to other files and thus some secondary effects in RTEMS source code.
  • src/rpc/Makefile.am, src/rpc/auth_time.c, src/rpc/clnt_simple.c, src/rpc/clnt_tcp.c, src/rpc/clnt_udp.c, src/rpc/clnt_unix.c, src/rpc/get_myaddress.c, src/rpc/pmap_clnt.c, src/rpc/pmap_getmaps.c, src/rpc/pmap_getport.c, src/rpc/pmap_rmt.c, src/rpc/rtime.c, src/rpc/svc_tcp.c, src/rpc/svc_udp.c, src/rpc/svc_unix.c: Use of _read, _write, and _close as macros conflicted with newlib's use of these as routine names. They were renamed to include "_RPC_" prefix.
  • Property mode set to 100644
File size: 3.9 KB
Line 
1/*
2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
3 * unrestricted use provided that this legend is included on all tape
4 * media and as a part of the software program in whole or part.  Users
5 * may copy or modify Sun RPC without charge, but are not authorized
6 * to license or distribute it to anyone else except as part of a product or
7 * program developed by the user.
8 *
9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
12 *
13 * Sun RPC is provided with no support and without any obligation on the
14 * part of Sun Microsystems, Inc. to assist in its use, correction,
15 * modification or enhancement.
16 *
17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
19 * OR ANY PART THEREOF.
20 *
21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
22 * or profits or other special, indirect and consequential damages, even if
23 * Sun has been advised of the possibility of such damages.
24 *
25 * Sun Microsystems, Inc.
26 * 2550 Garcia Avenue
27 * Mountain View, California  94043
28 */
29
30/*
31 * Copyright (c) 1988 by Sun Microsystems, Inc.
32
33 */
34
35/*
36 * rtime - get time from remote machine
37 *
38 * gets time, obtaining value from host
39 * on the udp/time socket.  Since timeserver returns
40 * with time of day in seconds since Jan 1, 1900,  must
41 * subtract seconds before Jan 1, 1970 to get
42 * what unix uses.
43 */
44#include <stdlib.h>
45#include <string.h>
46#include <unistd.h>
47#include <errno.h>
48#include <sys/types.h>
49#include <sys/socket.h>
50#include <sys/time.h>
51#include <netinet/in.h>
52#include <stdio.h>
53#include <netdb.h>
54
55#if defined(LIBC_SCCS) && !defined(lint)
56/* from: static char sccsid[] =         "@(#)rtime.c    2.2 88/08/10 4.0 RPCSRC; from 1.8 88/02/08 SMI"; */
57static const char rcsid[] = "$FreeBSD: src/lib/libc/rpc/rtime.c,v 1.5 2000/01/27 23:06:41 jasone Exp $";
58#endif
59
60extern int _rpc_dtablesize __P(( void ));
61
62#define NYEARS  (unsigned long)(1970 - 1900)
63#define TOFFSET (unsigned long)(60*60*24*(365*NYEARS + (NYEARS/4)))
64
65static void do_close __P(( int ));
66
67int
68rtime(addrp, timep, timeout)
69        struct sockaddr_in *addrp;
70        struct timeval *timep;
71        struct timeval *timeout;
72{
73        int s;
74        fd_set readfds;
75        int res;
76        unsigned long thetime;
77        struct sockaddr_in from;
78        int fromlen;
79        int type;
80        struct servent *serv;
81
82        if (timeout == NULL) {
83                type = SOCK_STREAM;
84        } else {
85                type = SOCK_DGRAM;
86        }
87        s = socket(AF_INET, type, 0);
88        if (s < 0) {
89                return(-1);
90        }
91        addrp->sin_family = AF_INET;
92
93        /* TCP and UDP port are the same in this case */
94        if ((serv = getservbyname("time", "tcp")) == NULL) {
95                return(-1);
96        }
97
98        addrp->sin_port = serv->s_port;
99
100        if (type == SOCK_DGRAM) {
101                res = sendto(s, (char *)&thetime, sizeof(thetime), 0, 
102                             (struct sockaddr *)addrp, sizeof(*addrp));
103                if (res < 0) {
104                        do_close(s);
105                        return(-1);     
106                }
107                do {
108                        FD_ZERO(&readfds);
109                        FD_SET(s, &readfds);
110                        res = select(_rpc_dtablesize(), &readfds,
111                                     (fd_set *)NULL, (fd_set *)NULL, timeout);
112                } while (res < 0 && errno == EINTR);
113                if (res <= 0) {
114                        if (res == 0) {
115                                errno = ETIMEDOUT;
116                        }
117                        do_close(s);
118                        return(-1);     
119                }
120                fromlen = sizeof(from);
121                res = recvfrom(s, (char *)&thetime, sizeof(thetime), 0, 
122                               (struct sockaddr *)&from, &fromlen);
123                do_close(s);
124                if (res < 0) {
125                        return(-1);     
126                }
127        } else {
128                if (connect(s, (struct sockaddr *)addrp, sizeof(*addrp)) < 0) {
129                        do_close(s);
130                        return(-1);
131                }
132                res = _RPC_read(s, (char *)&thetime, sizeof(thetime));
133                do_close(s);
134                if (res < 0) {
135                        return(-1);
136                }
137        }
138        if (res != sizeof(thetime)) {
139                errno = EIO;
140                return(-1);     
141        }
142        thetime = ntohl(thetime);
143        timep->tv_sec = thetime - TOFFSET;
144        timep->tv_usec = 0;
145        return(0);
146}
147
148static void
149do_close(s)
150        int s;
151{
152        int save;
153
154        save = errno;
155        (void)_RPC_close(s);
156        errno = save;
157}
Note: See TracBrowser for help on using the repository browser.