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