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 __FBSDID("$FreeBSD$"); 29 30 #include <sys/stat.h> 31 32 #include <errno.h> 33 #include <fcntl.h> 34 #include <time.h> 35 36 #ifndef UTIME_NOW 37 #define UTIME_NOW -1 38 #define UTIME_OMIT -2 39 #endif 40 41 int 42 futimens(int fd, const struct timespec times[2]) 43 { 44 struct timeval now, tv[2], *tvp; 45 struct stat sb; 46 int osreldate; 47 48 if (times == NULL || (times[0].tv_nsec == UTIME_NOW && 49 times[1].tv_nsec == UTIME_NOW)) 50 tvp = NULL; 51 else if (times[0].tv_nsec == UTIME_OMIT && 52 times[1].tv_nsec == UTIME_OMIT) 53 return (0); 54 else { 55 if ((times[0].tv_nsec < 0 || times[0].tv_nsec > 999999999) && 56 times[0].tv_nsec != UTIME_NOW && 57 times[0].tv_nsec != UTIME_OMIT) { 58 errno = EINVAL; 59 return (-1); 60 } 61 if ((times[1].tv_nsec < 0 || times[1].tv_nsec > 999999999) && 62 times[1].tv_nsec != UTIME_NOW && 63 times[1].tv_nsec != UTIME_OMIT) { 64 errno = EINVAL; 65 return (-1); 66 } 67 tv[0].tv_sec = times[0].tv_sec; 68 tv[0].tv_usec = times[0].tv_nsec / 1000; 69 tv[1].tv_sec = times[1].tv_sec; 70 tv[1].tv_usec = times[1].tv_nsec / 1000; 71 tvp = tv; 72 if (times[0].tv_nsec == UTIME_OMIT || 73 times[1].tv_nsec == UTIME_OMIT) { 74 if (fstat(fd, &sb) == -1) 75 return (-1); 76 if (times[0].tv_nsec == UTIME_OMIT) { 77 tv[0].tv_sec = sb.st_atim.tv_sec; 78 tv[0].tv_usec = sb.st_atim.tv_nsec / 1000; 79 } 80 if (times[1].tv_nsec == UTIME_OMIT) { 81 tv[1].tv_sec = sb.st_mtim.tv_sec; 82 tv[1].tv_usec = sb.st_mtim.tv_nsec / 1000; 83 } 84 } 85 if (times[0].tv_nsec == UTIME_NOW || 86 times[1].tv_nsec == UTIME_NOW) { 87 if (gettimeofday(&now, NULL) == -1) 88 return (-1); 89 if (times[0].tv_nsec == UTIME_NOW) 90 tv[0] = now; 91 if (times[1].tv_nsec == UTIME_NOW) 92 tv[1] = now; 93 } 94 } 95 return (futimes(fd, tvp)); 96 } 97