FreeBSD/Linux Kernel Cross Reference
sys/boot/common/ls.c
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 __FBSDID("$FreeBSD: src/sys/boot/common/ls.c,v 1.11 2003/08/25 23:30:41 obrien Exp $");
42
43 #include <sys/param.h>
44 #include <ufs/ufs/dinode.h>
45 #include <ufs/ufs/dir.h>
46
47 #include <stand.h>
48 #include <string.h>
49
50 #include "bootstrap.h"
51
52 static char typestr[] = "?fc?d?b? ?l?s?w";
53
54 static int ls_getdir(char **pathp);
55
56 COMMAND_SET(ls, "ls", "list files", command_ls);
57
58 static int
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 pager_open();
100 pager_output(path);
101 pager_output("\n");
102
103 while ((d = readdirfd(fd)) != NULL) {
104 if (strcmp(d->d_name, ".") && strcmp(d->d_name, "..")) {
105 if (verbose) {
106 /* stat the file, if possible */
107 sb.st_size = 0;
108 buf = malloc(strlen(path) + strlen(d->d_name) + 2);
109 sprintf(buf, "%s/%s", path, d->d_name);
110 /* ignore return, could be symlink, etc. */
111 if (stat(buf, &sb))
112 sb.st_size = 0;
113 free(buf);
114 sprintf(lbuf, " %c %8d %s\n", typestr[d->d_type],
115 (int)sb.st_size, d->d_name);
116 } else {
117 sprintf(lbuf, " %c %s\n", typestr[d->d_type], d->d_name);
118 }
119 if (pager_output(lbuf))
120 goto out;
121 }
122 }
123 out:
124 pager_close();
125 if (fd != -1)
126 close(fd);
127 if (path != NULL)
128 free(path);
129 return(result);
130 }
131
132 /*
133 * Given (path) containing a vaguely reasonable path specification, return an fd
134 * on the directory, and an allocated copy of the path to the directory.
135 */
136 static int
137 ls_getdir(char **pathp)
138 {
139 struct stat sb;
140 int fd;
141 const char *cp;
142 char *path, *tail;
143
144 tail = NULL;
145 fd = -1;
146
147 /* one extra byte for a possible trailing slash required */
148 path = malloc(strlen(*pathp) + 2);
149 strcpy(path, *pathp);
150
151 /* Make sure the path is respectable to begin with */
152 if (archsw.arch_getdev(NULL, path, &cp)) {
153 sprintf(command_errbuf, "bad path '%s'", path);
154 goto out;
155 }
156
157 /* If there's no path on the device, assume '/' */
158 if (*cp == 0)
159 strcat(path, "/");
160
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 Cache object: 3933d6fd5ce62962451f4d67166326e1
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