1 #ifndef TIMESTAMP_H 2 #define TIMESTAMP_H 3 4 /* $OpenBSD: timestamp.h,v 1.12 2024/04/09 15:08:21 cheloha Exp $ */ 5 6 /* 7 * Copyright (c) 2001 Marc Espie. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD 22 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* This module handles time stamps on files in a relatively high-level way. 32 * Most of the interface is achieved through inlineable code. 33 * 34 * ts_set_out_of_date(t): set up t so that it is out-of-date. 35 * b = is_out_of_date(t): check whether t is out-of-date. 36 * ts_set_from_stat(s, t): grab date out of stat(2) buffer. 37 * b = is_strictly_before(t1, t2): 38 * check whether t1 is before t2. 39 * ts_set_from_time_t(d, t): create timestamp from time_t. 40 */ 41 42 #define Init_Timestamp() clock_gettime(CLOCK_REALTIME, &starttime) 43 44 #define TMIN (sizeof(time_t) == sizeof(int32_t) ? INT32_MIN : INT64_MIN) 45 #define ts_set_out_of_date(t) (t).tv_sec = TMIN, (t).tv_nsec = 0 46 #define is_out_of_date(t) ((t).tv_sec == TMIN && (t).tv_nsec == 0) 47 48 #define ts_set_from_stat(s, t) \ 49 do { \ 50 (t) = (s).st_mtim; \ 51 if (is_out_of_date(t)) \ 52 (t).tv_nsec++; \ 53 } while (0) 54 #define is_strictly_before(t1, t2) timespeccmp(&(t1), &(t2), <) 55 #define ts_set_from_time_t(d, t) \ 56 do { \ 57 (t).tv_sec = d; \ 58 (t).tv_nsec = 0; \ 59 if (is_out_of_date(t)) \ 60 (t).tv_nsec++; \ 61 } while (0) 62 63 extern struct timespec starttime; /* The time at the start 64 * of this whole process */ 65 extern char *time_to_string(struct timespec *); 66 67 68 #endif 69