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libelftc/elftc_timestamp.c
- This file was added.
| /*- | |||||
| * Copyright (c) 2016 The FreeBSD Foundation | |||||
| * All rights reserved. | |||||
| * | |||||
| * This software was developed by Ed Maste under sponsorship | |||||
| * of the FreeBSD Foundation. | |||||
| * | |||||
| * Redistribution and use in source and binary forms, with or without | |||||
| * modification, are permitted provided that the following conditions | |||||
| * are met: | |||||
| * 1. Redistributions of source code must retain the above copyright | |||||
| * notice, this list of conditions and the following disclaimer. | |||||
| * 2. 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. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. | |||||
| */ | |||||
| #include <errno.h> | |||||
| #include <stdlib.h> | |||||
| #include <time.h> | |||||
| #include <libelftc.h> | |||||
| int | |||||
| elftc_timestamp(time_t *timestamp) | |||||
| { | |||||
| long long source_date_epoch; | |||||
| char *env, *eptr; | |||||
| if ((env = getenv("SOURCE_DATE_EPOCH")) != NULL) { | |||||
| errno = 0; | |||||
| source_date_epoch = strtoll(env, &eptr, 10); | |||||
| if (*eptr != '\0') | |||||
| errno = EINVAL; | |||||
| if (source_date_epoch < 0) | |||||
| errno = ERANGE; | |||||
| if (errno != 0) | |||||
| return (-1); | |||||
| *timestamp = source_date_epoch; | |||||
| return (0); | |||||
| } | |||||
| *timestamp = time(NULL); | |||||
| return (0); | |||||
| } | |||||