1 /*
2 * $NetBSD: ls.c,v 1.3 1997/06/13 13:48:47 drochner 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
42 #include <sys/param.h>
43 #include <ufs/ufs/dinode.h>
44 #include <ufs/ufs/dir.h>
45
46 #include <stand.h>
47 #include <string.h>
48
49 #include "bootstrap.h"
50
51 static char typestr[] = "?fc?d?b? ?l?s?w";
52
53 static int ls_getdir(char **pathp);
54
55 COMMAND_SET(ls, "ls", "list files", command_ls);
56
57 static int
command_ls(int argc,char * argv[])58 command_ls(int argc, char *argv[])
59 {
60 int fd;
61 struct stat sb;
62 struct dirent *d;
63 char *buf, *path;
64 char lbuf[128]; /* one line */
65 int result, ch;
66 int verbose;
67
68 result = CMD_OK;
69 fd = -1;
70 verbose = 0;
71 optind = 1;
72 optreset = 1;
73 while ((ch = getopt(argc, argv, "l")) != -1) {
74 switch (ch) {
75 case 'l':
76 verbose = 1;
77 break;
78 case '?':
79 default:
80 /* getopt has already reported an error */
81 return (CMD_OK);
82 }
83 }
84 argv += (optind - 1);
85 argc -= (optind - 1);
86
87 if (argc < 2) {
88 path = "";
89 } else {
90 path = argv[1];
91 }
92
93 if (stat(path, &sb) == 0 && !S_ISDIR(sb.st_mode)) {
94 if (verbose) {
95 printf(" %c %8d %s\n",
96 typestr[sb.st_mode >> 12],
97 (int)sb.st_size, path);
98 } else {
99 printf(" %c %s\n",
100 typestr[sb.st_mode >> 12], path);
101 }
102 return (CMD_OK);
103 }
104
105 fd = ls_getdir(&path);
106 if (fd == -1) {
107 result = CMD_ERROR;
108 goto out;
109 }
110 pager_open();
111 pager_output(path);
112 pager_output("\n");
113
114 while ((d = readdirfd(fd)) != NULL) {
115 if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) {
116 if (d->d_type == 0 || verbose) {
117 /* stat the file, if possible */
118 sb.st_size = 0;
119 sb.st_mode = 0;
120 buf = malloc(strlen(path) + strlen(d->d_name) + 2);
121 if (buf != NULL) {
122 sprintf(buf, "%s/%s", path, d->d_name);
123 /* ignore return, could be symlink, etc. */
124 if (stat(buf, &sb)) {
125 sb.st_size = 0;
126 sb.st_mode = 0;
127 }
128 free(buf);
129 }
130 }
131 if (verbose) {
132 snprintf(lbuf, sizeof (lbuf), " %c %8d %s\n",
133 typestr[d->d_type? d->d_type:sb.st_mode >> 12],
134 (int)sb.st_size, d->d_name);
135 } else {
136 snprintf(lbuf, sizeof (lbuf), " %c %s\n",
137 typestr[d->d_type? d->d_type:sb.st_mode >> 12], d->d_name);
138 }
139 if (pager_output(lbuf))
140 goto out;
141 }
142 }
143 out:
144 pager_close();
145 if (fd != -1)
146 close(fd);
147 free(path); /* ls_getdir() did allocate path */
148 return (result);
149 }
150
151 /*
152 * Given (path) containing a vaguely reasonable path specification, return an fd
153 * on the directory, and an allocated copy of the path to the directory.
154 */
155 static int
ls_getdir(char ** pathp)156 ls_getdir(char **pathp)
157 {
158 struct stat sb;
159 int fd;
160 const char *cp;
161 char *path;
162
163 fd = -1;
164
165 /* one extra byte for a possible trailing slash required */
166 path = malloc(strlen(*pathp) + 2);
167 if (path == NULL) {
168 snprintf(command_errbuf, sizeof (command_errbuf),
169 "out of memory");
170 goto out;
171 }
172
173 strcpy(path, *pathp);
174
175 /* Make sure the path is respectable to begin with */
176 if (archsw.arch_getdev(NULL, path, &cp)) {
177 snprintf(command_errbuf, sizeof (command_errbuf),
178 "bad path '%s'", path);
179 goto out;
180 }
181
182 /* If there's no path on the device, assume '/' */
183 if (*cp == 0)
184 strcat(path, "/");
185
186 fd = open(path, O_RDONLY);
187 if (fd < 0) {
188 snprintf(command_errbuf, sizeof (command_errbuf),
189 "open '%s' failed: %s", path, strerror(errno));
190 goto out;
191 }
192 if (fstat(fd, &sb) < 0) {
193 snprintf(command_errbuf, sizeof (command_errbuf),
194 "stat failed: %s", strerror(errno));
195 goto out;
196 }
197 if (!S_ISDIR(sb.st_mode)) {
198 snprintf(command_errbuf, sizeof (command_errbuf),
199 "%s: %s", path, strerror(ENOTDIR));
200 goto out;
201 }
202
203 *pathp = path;
204 return (fd);
205
206 out:
207 free(path);
208 *pathp = NULL;
209 if (fd != -1)
210 close(fd);
211 return (-1);
212 }
213