1/*
2 * $NetBSD: ls.c,v 1.2 2006/04/22 07:58:53 cherry Exp $
3 */
4
5/*-
6 * Copyright (c) 1993
7 *	The Regents of the University of California.  All rights reserved.
8 * Copyright (c) 1996
9 *	Matthias Drochner.  All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed by the University of
22 *	California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 *    may be used to endorse or promote products derived from this software
25 *    without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * SUCH DAMAGE.
38 */
39
40#include <sys/cdefs.h>
41/* __FBSDID("$FreeBSD: src/sys/boot/common/ls.c,v 1.11 2003/08/25 23:30:41 obrien Exp $"); */
42
43
44#include <sys/param.h>
45#include <ufs/ufs/dinode.h>
46#include <ufs/ufs/dir.h>
47#include <sys/dirent.h>
48
49#include <lib/libsa/stand.h>
50#include <lib/libsa/loadfile.h>
51
52#include "bootstrap.h"
53
54static char typestr[] = "?fc?d?b? ?l?s?w";
55
56static int	ls_getdir(char **pathp);
57
58int
59command_ls(int argc, char *argv[])
60{
61    int		fd;
62    struct stat	sb;
63    struct 	dirent *d;
64    char	*buf, *path;
65    char	lbuf[128];		/* one line */
66    int		result, ch;
67    int		verbose;
68
69    result = CMD_OK;
70    fd = -1;
71    verbose = 0;
72    optind = 1;
73    optreset = 1;
74    while ((ch = getopt(argc, argv, "l")) != -1) {
75	switch(ch) {
76	case 'l':
77	    verbose = 1;
78	    break;
79	case '?':
80	default:
81	    /* getopt has already reported an error */
82	    return(CMD_OK);
83	}
84    }
85    argv += (optind - 1);
86    argc -= (optind - 1);
87
88    if (argc < 2) {
89	path = "";
90    } else {
91	path = argv[1];
92    }
93
94    fd = ls_getdir(&path);
95    if (fd == -1) {
96	result = CMD_ERROR;
97	goto out;
98    }
99
100    pager_open();
101    pager_output(path);
102    pager_output("\n");
103
104    while ((d = readdirfd(fd)) != NULL) {
105/*	if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) { */
106	    if (verbose) {
107		/* stat the file, if possible */
108		sb.st_size = 0;
109		buf = alloc(strlen(path) + strlen(d->d_name) + 2);
110		sprintf(buf, "%s/%s", path, d->d_name);
111		/* ignore return, could be symlink, etc. */
112		if (stat(buf, &sb))
113		    sb.st_size = 0;
114		free(buf);
115		sprintf(lbuf, " %c %8d %s\n", typestr[d->d_type],
116		    (int)sb.st_size, d->d_name);
117	    } else {
118	      sprintf(lbuf, " %c  %s\n", typestr[d->d_type], d->d_name);
119	    }
120	    if (pager_output(lbuf))
121		goto out;
122	    /*	} */
123    }
124 out:
125    pager_close();
126    if (fd != -1)
127	close(fd);
128    if (path != NULL)
129	free(path);
130    return(result);
131}
132
133/*
134 * Given (path) containing a vaguely reasonable path specification, return an fd
135 * on the directory, and an allocated copy of the path to the directory.
136 */
137static int
138ls_getdir(char **pathp)
139{
140    struct stat	sb;
141    int		fd;
142    const char	*cp;
143    char	*path, *tail;
144
145    tail = NULL;
146    fd = -1;
147
148    /* one extra byte for a possible trailing slash required */
149    path = alloc(strlen(*pathp) + 2);
150    strcpy(path, *pathp);
151
152    /* Make sure the path is respectable to begin with */
153    if (archsw.arch_getdev(NULL, path, &cp)) {
154	sprintf(command_errbuf, "bad path '%s'", path);
155	goto out;
156    }
157
158    /* If there's no path on the device, assume '/' */
159    if (*cp == 0)
160	strcat(path, "/");
161    fd = open(path, O_RDONLY);
162    if (fd < 0) {
163	sprintf(command_errbuf, "open '%s' failed: %s", path, strerror(errno));
164	goto out;
165    }
166    if (fstat(fd, &sb) < 0) {
167	sprintf(command_errbuf, "stat failed: %s", strerror(errno));
168	goto out;
169    }
170    if (!S_ISDIR(sb.st_mode)) {
171	sprintf(command_errbuf, "%s: %s", path, strerror(ENOTDIR));
172	goto out;
173    }
174
175    *pathp = path;
176    return(fd);
177
178 out:
179    free(path);
180    *pathp = NULL;
181    if (fd != -1)
182	close(fd);
183    return(-1);
184}
185