1 /*- 2 * Copyright (c) 2011 Joseph Koshy 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/types.h> 28 29 #include "libelftc.h" 30 31 #include "_libelftc.h" 32 33 ELFTC_VCSID("$Id$"); 34 35 /* 36 * Determine the field name for the timestamp fields inside a 'struct 37 * stat'. 38 */ 39 40 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__) 41 #define ATIME st_atimespec 42 #define MTIME st_mtimespec 43 #define LIBELFTC_HAVE_UTIMES 1 44 #endif 45 46 #if defined(__DragonFly__) || defined(__linux__) || defined(__OpenBSD__) 47 #define ATIME st_atim 48 #define MTIME st_mtim 49 #define LIBELFTC_HAVE_UTIMES 1 50 #endif 51 52 #if LIBELFTC_HAVE_UTIMES 53 #include <sys/time.h> 54 #else 55 #include <utime.h> 56 #endif 57 58 int 59 elftc_set_timestamps(const char *fn, struct stat *sb) 60 { 61 #if LIBELFTC_HAVE_UTIMES 62 /* 63 * The BSD utimes() system call offers timestamps 64 * 1-microsecond granularity. 65 */ 66 struct timeval tv[2]; 67 68 tv[0].tv_sec = sb->ATIME.tv_sec; 69 tv[0].tv_usec = sb->ATIME.tv_nsec / 1000; 70 tv[1].tv_sec = sb->MTIME.tv_sec; 71 tv[1].tv_usec = sb->MTIME.tv_nsec / 1000; 72 73 return (utimes(fn, tv)); 74 #else 75 /* 76 * On OSes without utimes(), fall back to the POSIX utime() 77 * call, which offers 1-second granularity. 78 */ 79 struct utimbuf utb; 80 81 utb.actime = sb->st_atime; 82 utb.modtime = sb->st_mtime; 83 return (utime(fn, &utb)); 84 #endif 85 } 86