ls.c revision 36787 
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
35static char sccsid[] = "@(#)ls.c	8.1 (Berkeley) 6/6/93";
36#endif /* not lint */
37
38#include <sys/param.h>
39#include <sys/stat.h>
40
41#include <err.h>
42#include <errno.h>
43#include <stdio.h>
44#include <string.h>
45#include <time.h>
46#include <unistd.h>
47#include <utmp.h>
48
49/* Derived from the print routines in the ls(1) source code. */
50
51static void printlink __P((char *));
52static void printtime __P((time_t));
53
54void
55printlong(name, accpath, sb)
56	char *name;			/* filename to print */
57	char *accpath;			/* current valid path to filename */
58	struct stat *sb;		/* stat buffer */
59{
60	char modep[15], *user_from_uid(), *group_from_gid();
61
62	(void)printf("%6lu %4qd ", sb->st_ino, sb->st_blocks);
63	(void)strmode(sb->st_mode, modep);
64	(void)printf("%s %3u %-*s %-*s ", modep, sb->st_nlink, UT_NAMESIZE,
65	    user_from_uid(sb->st_uid, 0), UT_NAMESIZE,
66	    group_from_gid(sb->st_gid, 0));
67
68	if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
69		(void)printf("%3d, %3d ", major(sb->st_rdev),
70		    minor(sb->st_rdev));
71	else
72		(void)printf("%8qd ", sb->st_size);
73	printtime(sb->st_mtime);
74	(void)printf("%s", name);
75	if (S_ISLNK(sb->st_mode))
76		printlink(accpath);
77	(void)putchar('\n');
78}
79
80static void
81printtime(ftime)
82	time_t ftime;
83{
84	int i;
85	char longstring[80];
86
87	strftime(longstring, sizeof(longstring), "%c", localtime(&ftime));
88	for (i = 4; i < 11; ++i)
89		(void)putchar(longstring[i]);
90
91#define	SIXMONTHS	((365 / 2) * 86400)
92	if (ftime + SIXMONTHS > time((time_t *)NULL))
93		for (i = 11; i < 16; ++i)
94			(void)putchar(longstring[i]);
95	else {
96		(void)putchar(' ');
97		for (i = 20; i < 24; ++i)
98			(void)putchar(longstring[i]);
99	}
100	(void)putchar(' ');
101}
102
103static void
104printlink(name)
105	char *name;
106{
107	int lnklen;
108	char path[MAXPATHLEN + 1];
109
110	if ((lnklen = readlink(name, path, MAXPATHLEN - 1)) == -1) {
111		warn("%s", name);
112		return;
113	}
114	path[lnklen] = '\0';
115	(void)printf(" -> %s", path);
116}
117