1/*	$NetBSD: ls.c,v 1.16 2009/03/18 10:22:45 cegger Exp $	*/
2
3/*-
4 * Copyright (c) 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#ifndef lint
34__COPYRIGHT("@(#) Copyright (c) 1993\n\
35	The Regents of the University of California.  All rights reserved.\n");
36#endif /* not lint */
37
38#ifndef lint
39#if 0
40static char sccsid[] = "@(#)ls.c	8.1 (Berkeley) 6/11/93";
41#else
42__RCSID("$NetBSD: ls.c,v 1.16 2009/03/18 10:22:45 cegger Exp $");
43#endif
44#endif /* not lint */
45
46#include <sys/param.h>
47#include <sys/stat.h>
48#include <sys/dirent.h>
49#include <ufs/ufs/dir.h>
50#include <ufs/ufs/dinode.h>
51#include <sys/ttychars.h>
52#include <lib/libsa/stand.h>
53
54int main(void);
55static void ls(int);
56
57int
58main(void)
59{
60	struct stat st;
61	int fd;
62
63	for (;;) {
64		if ((fd = getfile("ls", 0)) == -1)
65			exit();
66
67		if (fstat(fd, &st) == -1) {
68			printf("ls: cannot stat\n");
69			continue;
70		}
71
72		if (!S_ISDIR(st.st_mode)) {
73			printf("ls: not a directory\n");
74			continue;
75		}
76		if (st.st_size == 0) {
77			printf("ls: zero length directory\n");
78			continue;
79		}
80		ls(fd);
81	}
82}
83
84typedef struct dirent	DP;
85static void
86ls(register int fd)
87{
88	register int size;
89	register char *dp;
90	char dirbuf[DIRBLKSIZ];
91
92	printf("\ninode\tname\n");
93	while ((size = read(fd, dirbuf, DIRBLKSIZ)) == DIRBLKSIZ)
94		for (dp = dirbuf; (dp < (dirbuf + size)) &&
95		    (dp + ((DP *)dp)->d_reclen) < (dirbuf + size);
96		    dp += ((DP *)dp)->d_reclen) {
97			if (((DP *)dp)->d_fileno == 0)
98				continue;
99			if (((DP *)dp)->d_namlen > NAME_MAX + 1) {
100				printf("Corrupt file name length!  Run fsck soon!\n");
101				return;
102			}
103			printf("%d\t%s\n", ((DP *)dp)->d_fileno,
104			    ((DP *)dp)->d_name);
105		}
106}
107