1 /*- 2 * Copyright (c) 2015 Jilles Tjoelker 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 #include <sys/stat.h> 29 30 #include <errno.h> 31 #include <fcntl.h> 32 #include <time.h> 33 34 #ifndef UTIME_NOW 35 #define UTIME_NOW -1 36 #define UTIME_OMIT -2 37 #endif 38 39 int futimens(int fd,const struct timespec times[2])40 futimens(int fd, const struct timespec times[2]) 41 { 42 struct timeval now, tv[2], *tvp; 43 struct stat sb; 44 int osreldate; 45 46 if (times == NULL || (times[0].tv_nsec == UTIME_NOW && 47 times[1].tv_nsec == UTIME_NOW)) 48 tvp = NULL; 49 else if (times[0].tv_nsec == UTIME_OMIT && 50 times[1].tv_nsec == UTIME_OMIT) 51 return (0); 52 else { 53 if ((times[0].tv_nsec < 0 || times[0].tv_nsec > 999999999) && 54 times[0].tv_nsec != UTIME_NOW && 55 times[0].tv_nsec != UTIME_OMIT) { 56 errno = EINVAL; 57 return (-1); 58 } 59 if ((times[1].tv_nsec < 0 || times[1].tv_nsec > 999999999) && 60 times[1].tv_nsec != UTIME_NOW && 61 times[1].tv_nsec != UTIME_OMIT) { 62 errno = EINVAL; 63 return (-1); 64 } 65 tv[0].tv_sec = times[0].tv_sec; 66 tv[0].tv_usec = times[0].tv_nsec / 1000; 67 tv[1].tv_sec = times[1].tv_sec; 68 tv[1].tv_usec = times[1].tv_nsec / 1000; 69 tvp = tv; 70 if (times[0].tv_nsec == UTIME_OMIT || 71 times[1].tv_nsec == UTIME_OMIT) { 72 if (fstat(fd, &sb) == -1) 73 return (-1); 74 if (times[0].tv_nsec == UTIME_OMIT) { 75 tv[0].tv_sec = sb.st_atim.tv_sec; 76 tv[0].tv_usec = sb.st_atim.tv_nsec / 1000; 77 } 78 if (times[1].tv_nsec == UTIME_OMIT) { 79 tv[1].tv_sec = sb.st_mtim.tv_sec; 80 tv[1].tv_usec = sb.st_mtim.tv_nsec / 1000; 81 } 82 } 83 if (times[0].tv_nsec == UTIME_NOW || 84 times[1].tv_nsec == UTIME_NOW) { 85 if (gettimeofday(&now, NULL) == -1) 86 return (-1); 87 if (times[0].tv_nsec == UTIME_NOW) 88 tv[0] = now; 89 if (times[1].tv_nsec == UTIME_NOW) 90 tv[1] = now; 91 } 92 } 93 return (futimes(fd, tvp)); 94 } 95