1 /* vi: set sw=4 ts=4: */
3 * od implementation for busybox
4 * Based on code from util-linux v 2.11l
7 * The Regents of the University of California. All rights reserved.
9 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
11 * Original copyright notice is retained at the end of this file.
14 //config: bool "od (11 kb)"
17 //config: od is used to dump binary files in octal and other formats.
19 //applet:IF_OD(APPLET(od, BB_DIR_USR_BIN, BB_SUID_DROP))
21 //kbuild:lib-$(CONFIG_OD) += od.o
23 //usage:#if !ENABLE_DESKTOP
24 //usage:#define od_trivial_usage
25 //usage: "[-aBbcDdeFfHhIiLlOovXx] [FILE]"
26 //usage:#define od_full_usage "\n\n"
27 //usage: "Print FILE (or stdin) unambiguously, as octal bytes by default"
32 /* This one provides -t (busybox's own build script needs it) */
33 #include "od_bloaty.c"
39 odoffset(dumper_t *dumper, int argc, char ***argvp)
46 * The offset syntax of od(1) was genuinely bizarre. First, if
47 * it started with a plus it had to be an offset. Otherwise, if
48 * there were at least two arguments, a number or lower-case 'x'
49 * followed by a number makes it an offset. By default it was
50 * octal; if it started with 'x' or '0x' it was hex. If it ended
51 * in a '.', it was decimal. If a 'b' or 'B' was appended, it
52 * multiplied the number by 512 or 1024 byte units. There was
53 * no way to assign a block count to a hex offset.
55 * We assumes it's a file if the offset is bad.
60 /* hey someone is probably piping to us ... */
67 && ((p[0] != 'x') || !isxdigit(p[1])))))
72 * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and
77 if (p[0] == 'x' && isxdigit(p[1])) {
80 } else if (p[0] == '0' && p[1] == 'x') {
85 /* skip over the number */
87 for (num = p; isxdigit(*p); ++p)
90 for (num = p; isdigit(*p); ++p)
93 /* check for no number */
97 /* if terminates with a '.', base is decimal */
104 dumper->dump_skip = strtol(num, &end, base ? base : 8);
106 /* if end isn't the same as p, we got a non-octal digit */
108 dumper->dump_skip = 0;
112 dumper->dump_skip *= 512;
114 } else if (*p == 'B') {
115 dumper->dump_skip *= 1024;
120 dumper->dump_skip = 0;
124 * If the offset uses a non-octal base, the base of
125 * the offset is changed as well. This isn't pretty,
128 #define TYPE_OFFSET 7
138 dumper->fshead->nextfu->fmt[TYPE_OFFSET]
139 = dumper->fshead->nextfs->nextfu->fmt[TYPE_OFFSET]
147 static const char *const add_strings[] = {
148 "16/1 \"%3_u \" \"\\n\"", /* a */
149 "8/2 \" %06o \" \"\\n\"", /* B, o */
150 "16/1 \"%03o \" \"\\n\"", /* b */
151 "16/1 \"%3_c \" \"\\n\"", /* c */
152 "8/2 \" %05u \" \"\\n\"", /* d */
153 "4/4 \" %010u \" \"\\n\"", /* D */
154 "2/8 \" %21.14e \" \"\\n\"", /* e (undocumented in od), F */
155 "4/4 \" %14.7e \" \"\\n\"", /* f */
156 "4/4 \" %08x \" \"\\n\"", /* H, X */
157 "8/2 \" %04x \" \"\\n\"", /* h, x */
158 "4/4 \" %11d \" \"\\n\"", /* I, L, l */
159 "8/2 \" %6d \" \"\\n\"", /* i */
160 "4/4 \" %011o \" \"\\n\"", /* O */
163 static const char od_opts[] ALIGN1 = "aBbcDdeFfHhIiLlOoXxv";
165 static const char od_o2si[] ALIGN1 = {
168 9, 0xa, 0xb, 0xa, 0xa,
172 int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
173 int od_main(int argc, char **argv)
178 dumper_t *dumper = alloc_dumper();
180 while ((ch = getopt(argc, argv, od_opts)) > 0) {
182 dumper->dump_vflag = ALL;
183 } else if (((p = strchr(od_opts, ch)) != NULL) && (*p != '\0')) {
186 bb_dump_add(dumper, "\"%07.7_Ao\n\"");
187 bb_dump_add(dumper, "\"%07.7_ao \"");
189 bb_dump_add(dumper, "\" \"");
191 bb_dump_add(dumper, add_strings[(int)od_o2si[(p - od_opts)]]);
192 } else { /* P, p, s, w, or other unhandled */
196 if (!dumper->fshead) {
197 bb_dump_add(dumper, "\"%07.7_Ao\n\"");
198 bb_dump_add(dumper, "\"%07.7_ao \" 8/2 \"%06o \" \"\\n\"");
204 odoffset(dumper, argc, &argv);
206 return bb_dump_dump(dumper, argv);
208 #endif /* ENABLE_DESKTOP */
211 * Copyright (c) 1990 The Regents of the University of California.
212 * All rights reserved.
214 * Redistribution and use in source and binary forms, with or without
215 * modification, are permitted provided that the following conditions
217 * 1. Redistributions of source code must retain the above copyright
218 * notice, this list of conditions and the following disclaimer.
219 * 2. Redistributions in binary form must reproduce the above copyright
220 * notice, this list of conditions and the following disclaimer in the
221 * documentation and/or other materials provided with the distribution.
222 * 3. Neither the name of the University nor the names of its contributors
223 * may be used to endorse or promote products derived from this software
224 * without specific prior written permission.
226 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
227 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
228 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
229 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
230 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
231 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
232 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
233 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
234 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
235 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF