ls.c revision 200420 
1/*
2 * Copyright (c) 1989, 1993
3 *	The Regents of the University of California.  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 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35#if 0
36static char sccsid[] = "@(#)ls.c	8.1 (Berkeley) 6/6/93";
37#endif
38#endif /* not lint */
39
40#include <sys/cdefs.h>
41__FBSDID("$FreeBSD: head/usr.bin/find/ls.c 200420 2009-12-11 23:35:38Z delphij $");
42
43#include <sys/param.h>
44#include <sys/stat.h>
45
46#include <err.h>
47#include <fts.h>
48#include <grp.h>
49#include <inttypes.h>
50#include <langinfo.h>
51#include <pwd.h>
52#include <stdio.h>
53#include <string.h>
54#include <time.h>
55#include <unistd.h>
56
57#include "find.h"
58
59/* Derived from the print routines in the ls(1) source code. */
60
61static void printlink(char *);
62static void printtime(time_t);
63
64void
65printlong(char *name, char *accpath, struct stat *sb)
66{
67	char modep[15];
68
69	(void)printf("%6lu %8"PRId64" ", (u_long) sb->st_ino, sb->st_blocks);
70	(void)strmode(sb->st_mode, modep);
71	(void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, MAXLOGNAME - 1,
72	    user_from_uid(sb->st_uid, 0), MAXLOGNAME - 1,
73	    group_from_gid(sb->st_gid, 0));
74
75	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
76		(void)printf("%3d, %3d ", major(sb->st_rdev),
77		    minor(sb->st_rdev));
78	else
79		(void)printf("%8"PRId64" ", sb->st_size);
80	printtime(sb->st_mtime);
81	(void)printf("%s", name);
82	if (S_ISLNK(sb->st_mode))
83		printlink(accpath);
84	(void)putchar('\n');
85}
86
87static void
88printtime(time_t ftime)
89{
90	char longstring[80];
91	static time_t lnow;
92	const char *format;
93	static int d_first = -1;
94
95	if (d_first < 0)
96		d_first = (*nl_langinfo(D_MD_ORDER) == 'd');
97	if (lnow == 0)
98		lnow = time(NULL);
99
100#define	SIXMONTHS	((365 / 2) * 86400)
101	if (ftime + SIXMONTHS > lnow && ftime < lnow + SIXMONTHS)
102		/* mmm dd hh:mm || dd mmm hh:mm */
103		format = d_first ? "%e %b %R " : "%b %e %R ";
104	else
105		/* mmm dd  yyyy || dd mmm  yyyy */
106		format = d_first ? "%e %b  %Y " : "%b %e  %Y ";
107	strftime(longstring, sizeof(longstring), format, localtime(&ftime));
108	fputs(longstring, stdout);
109}
110
111static void
112printlink(char *name)
113{
114	int lnklen;
115	char path[MAXPATHLEN];
116
117	if ((lnklen = readlink(name, path, MAXPATHLEN - 1)) == -1) {
118		warn("%s", name);
119		return;
120	}
121	path[lnklen] = '\0';
122	(void)printf(" -> %s", path);
123}
124