1 /*
2 * $NetBSD: ls.c,v 1.4 2014/03/25 18:35:32 christos 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
54 static char typestr[] = "?fc?d?b? ?l?s?w";
55
56 static int ls_getdir(char **pathp);
57
58 int
command_ls(int argc,char * argv[])59 command_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 size_t buflen;
108 /* stat the file, if possible */
109 sb.st_size = 0;
110 buflen = strlen(path) + strlen(d->d_name) + 2;
111 buf = alloc(buflen);
112 snprintf(buf, buflen, "%s/%s", path, d->d_name);
113 /* ignore return, could be symlink, etc. */
114 if (stat(buf, &sb))
115 sb.st_size = 0;
116 free(buf);
117 snprintf(lbuf, sizeof(lbuf), " %c %8d %s\n", typestr[d->d_type],
118 (int)sb.st_size, d->d_name);
119 } else {
120 snprintf(lbuf, sizeof(lbuf), " %c %s\n", typestr[d->d_type],
121 d->d_name);
122 }
123 if (pager_output(lbuf))
124 goto out;
125 /* } */
126 }
127 out:
128 pager_close();
129 if (fd != -1)
130 close(fd);
131 if (path != NULL)
132 free(path);
133 return(result);
134 }
135
136 /*
137 * Given (path) containing a vaguely reasonable path specification, return an fd
138 * on the directory, and an allocated copy of the path to the directory.
139 */
140 static int
ls_getdir(char ** pathp)141 ls_getdir(char **pathp)
142 {
143 struct stat sb;
144 int fd;
145 const char *cp;
146 char *path, *tail;
147
148 tail = NULL;
149 fd = -1;
150
151 /* one extra byte for a possible trailing slash required */
152 path = alloc(strlen(*pathp) + 2);
153 strcpy(path, *pathp);
154
155 /* Make sure the path is respectable to begin with */
156 if (archsw.arch_getdev(NULL, path, &cp)) {
157 command_seterr("bad path '%s'", path);
158 goto out;
159 }
160
161 /* If there's no path on the device, assume '/' */
162 if (*cp == 0)
163 strcat(path, "/");
164 fd = open(path, O_RDONLY);
165 if (fd < 0) {
166 command_seterr("open '%s' failed: %s", path, strerror(errno));
167 goto out;
168 }
169 if (fstat(fd, &sb) < 0) {
170 command_seterr("stat failed: %s", strerror(errno));
171 goto out;
172 }
173 if (!S_ISDIR(sb.st_mode)) {
174 command_seterr("%s: %s", path, strerror(ENOTDIR));
175 goto out;
176 }
177
178 *pathp = path;
179 return(fd);
180
181 out:
182 free(path);
183 *pathp = NULL;
184 if (fd != -1)
185 close(fd);
186 return(-1);
187 }
188