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master
sunrpc/rtime.c
145 строк
4 KB
Adhemerval Zanella
sunrpc: Fix clang build
21 окт 2025, 15:27
21 окт 2025, 15:27
87e850f
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/* * Copyright (c) 2010, Oracle America, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * Neither the name of the "Oracle America, Inc." nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * rtime - get time from remote machine * * gets time, obtaining value from host * on the udp/time socket. Since timeserver returns * with time of day in seconds since Jan 1, 1900, must * subtract seconds before Jan 1, 1970 to get * what unix uses. */ #include <stdio.h> #include <unistd.h> #include <stdint.h> #include <rpc/rpc.h> #include <rpc/clnt.h> #include <sys/types.h> #include <sys/poll.h> #include <sys/socket.h> #include <sys/time.h> #include <rpc/auth_des.h> #include <errno.h> #include <netinet/in.h> #include <shlib-compat.h> #define NYEARS (u_long)(1970 - 1900) #define TOFFSET (u_long)(60*60*24*(365*NYEARS + (NYEARS/4))) static void do_close (int); static void do_close (int s) { int save; save = errno; __close (s); __set_errno (save); } int rtime (struct sockaddr_in *addrp, struct rpc_timeval *timep, struct rpc_timeval *timeout) { int s; struct pollfd fd; int milliseconds; int res; /* RFC 868 says the time is transmitted as a 32-bit value. */ uint32_t thetime = 0; struct sockaddr_in from; socklen_t fromlen; int type; if (timeout == NULL) type = SOCK_STREAM; else type = SOCK_DGRAM; s = __socket (AF_INET, type, 0); if (s < 0) return (-1); addrp->sin_family = AF_INET; addrp->sin_port = htons (IPPORT_TIMESERVER); if (type == SOCK_DGRAM) { res = __sendto (s, (char *) &thetime, sizeof (thetime), 0, (struct sockaddr *) addrp, sizeof (*addrp)); if (res < 0) { do_close (s); return -1; } milliseconds = (timeout->tv_sec * 1000) + (timeout->tv_usec / 1000); fd.fd = s; fd.events = POLLIN; do res = __poll (&fd, 1, milliseconds); while (res < 0 && errno == EINTR); if (res <= 0) { if (res == 0) __set_errno (ETIMEDOUT); do_close (s); return (-1); } fromlen = sizeof (from); res = __recvfrom (s, (char *) &thetime, sizeof (thetime), 0, (struct sockaddr *) &from, &fromlen); do_close (s); if (res < 0) return -1; } else { if (__connect (s, (struct sockaddr *) addrp, sizeof (*addrp)) < 0) { do_close (s); return -1; } res = __read (s, (char *) &thetime, sizeof (thetime)); do_close (s); if (res < 0) return (-1); } if (res != sizeof (thetime)) { __set_errno (EIO); return -1; } thetime = ntohl (thetime); timep->tv_sec = thetime - TOFFSET; timep->tv_usec = 0; return 0; } libc_hidden_nolink_sunrpc (rtime, GLIBC_2_1)