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      1 /*	$NetBSD: cmp.c,v 1.17 2003/08/07 09:05:14 agc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1989, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Michael Fischbein.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 #ifndef lint
     37 #if 0
     38 static char sccsid[] = "@(#)cmp.c	8.1 (Berkeley) 5/31/93";
     39 #else
     40 __RCSID("$NetBSD: cmp.c,v 1.17 2003/08/07 09:05:14 agc Exp $");
     41 #endif
     42 #endif /* not lint */
     43 
     44 #include <sys/types.h>
     45 #include <sys/stat.h>
     46 
     47 #include <fts.h>
     48 #include <string.h>
     49 
     50 #include "ls.h"
     51 #include "extern.h"
     52 
     53 #if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) || \
     54     defined(_XOPEN_SOURCE) || defined(__NetBSD__)
     55 #define ATIMENSEC_CMP(x, op, y) ((x)->st_atimensec op (y)->st_atimensec)
     56 #define CTIMENSEC_CMP(x, op, y) ((x)->st_ctimensec op (y)->st_ctimensec)
     57 #define MTIMENSEC_CMP(x, op, y) ((x)->st_mtimensec op (y)->st_mtimensec)
     58 #else
     59 #define ATIMENSEC_CMP(x, op, y) \
     60 	((x)->st_atimespec.tv_nsec op (y)->st_atimespec.tv_nsec)
     61 #define CTIMENSEC_CMP(x, op, y) \
     62 	((x)->st_ctimespec.tv_nsec op (y)->st_ctimespec.tv_nsec)
     63 #define MTIMENSEC_CMP(x, op, y) \
     64 	((x)->st_mtimespec.tv_nsec op (y)->st_mtimespec.tv_nsec)
     65 #endif
     66 
     67 int
     68 namecmp(const FTSENT *a, const FTSENT *b)
     69 {
     70 
     71 	return (strcmp(a->fts_name, b->fts_name));
     72 }
     73 
     74 int
     75 revnamecmp(const FTSENT *a, const FTSENT *b)
     76 {
     77 
     78 	return (strcmp(b->fts_name, a->fts_name));
     79 }
     80 
     81 int
     82 modcmp(const FTSENT *a, const FTSENT *b)
     83 {
     84 
     85 	if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
     86 		return (1);
     87 	else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
     88 		return (-1);
     89 	else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
     90 		return (1);
     91 	else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
     92 		return (-1);
     93 	else
     94 		return (namecmp(a, b));
     95 }
     96 
     97 int
     98 revmodcmp(const FTSENT *a, const FTSENT *b)
     99 {
    100 
    101 	if (b->fts_statp->st_mtime > a->fts_statp->st_mtime)
    102 		return (-1);
    103 	else if (b->fts_statp->st_mtime < a->fts_statp->st_mtime)
    104 		return (1);
    105 	else if (MTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
    106 		return (-1);
    107 	else if (MTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
    108 		return (1);
    109 	else
    110 		return (revnamecmp(a, b));
    111 }
    112 
    113 int
    114 acccmp(const FTSENT *a, const FTSENT *b)
    115 {
    116 
    117 	if (b->fts_statp->st_atime > a->fts_statp->st_atime)
    118 		return (1);
    119 	else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
    120 		return (-1);
    121 	else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
    122 		return (1);
    123 	else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
    124 		return (-1);
    125 	else
    126 		return (namecmp(a, b));
    127 }
    128 
    129 int
    130 revacccmp(const FTSENT *a, const FTSENT *b)
    131 {
    132 
    133 	if (b->fts_statp->st_atime > a->fts_statp->st_atime)
    134 		return (-1);
    135 	else if (b->fts_statp->st_atime < a->fts_statp->st_atime)
    136 		return (1);
    137 	else if (ATIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
    138 		return (-1);
    139 	else if (ATIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
    140 		return (1);
    141 	else
    142 		return (revnamecmp(a, b));
    143 }
    144 
    145 int
    146 statcmp(const FTSENT *a, const FTSENT *b)
    147 {
    148 
    149 	if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
    150 		return (1);
    151 	else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
    152 		return (-1);
    153 	else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
    154 		return (1);
    155 	else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
    156 		return (-1);
    157 	else
    158 		return (namecmp(a, b));
    159 }
    160 
    161 int
    162 revstatcmp(const FTSENT *a, const FTSENT *b)
    163 {
    164 
    165 	if (b->fts_statp->st_ctime > a->fts_statp->st_ctime)
    166 		return (-1);
    167 	else if (b->fts_statp->st_ctime < a->fts_statp->st_ctime)
    168 		return (1);
    169 	else if (CTIMENSEC_CMP(b->fts_statp, >, a->fts_statp))
    170 		return (-1);
    171 	else if (CTIMENSEC_CMP(b->fts_statp, <, a->fts_statp))
    172 		return (1);
    173 	else
    174 		return (revnamecmp(a, b));
    175 }
    176 
    177 int
    178 sizecmp(const FTSENT *a, const FTSENT *b)
    179 {
    180 
    181 	if (b->fts_statp->st_size > a->fts_statp->st_size)
    182 		return (1);
    183 	if (b->fts_statp->st_size < a->fts_statp->st_size)
    184 		return (-1);
    185 	else
    186 		return (namecmp(a, b));
    187 }
    188 
    189 int
    190 revsizecmp(const FTSENT *a, const FTSENT *b)
    191 {
    192 
    193 	if (b->fts_statp->st_size > a->fts_statp->st_size)
    194 		return (-1);
    195 	if (b->fts_statp->st_size < a->fts_statp->st_size)
    196 		return (1);
    197 	else
    198 		return (revnamecmp(a, b));
    199 }
    200