Annotation of src/usr.bin/hexdump/hexdump.c, Revision 1.18
1.18 ! deraadt 1: /* $OpenBSD: hexdump.c,v 1.17 2015/01/16 06:40:08 deraadt Exp $ */
1.7 pvalchev 2: /* $NetBSD: hexdump.c,v 1.7 1997/10/19 02:34:06 lukem Exp $ */
1.4 deraadt 3:
1.1 deraadt 4: /*
1.7 pvalchev 5: * Copyright (c) 1989, 1993
6: * The Regents of the University of California. All rights reserved.
1.1 deraadt 7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.9 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
1.14 millert 33: #include <err.h>
1.1 deraadt 34: #include <stdio.h>
1.11 david 35: #include <stdlib.h>
1.18 ! deraadt 36: #include <unistd.h>
1.3 deraadt 37: #include <string.h>
1.1 deraadt 38: #include "hexdump.h"
39:
1.17 deraadt 40: #define MINIMUM(a, b) (((a) < (b)) ? (a) : (b))
41:
1.1 deraadt 42: FS *fshead; /* head of format strings */
43: int blocksize; /* data block size */
44: int exitval; /* final exit value */
1.12 miod 45: long length = -1; /* max bytes to read */
1.14 millert 46: char *iobuf; /* stdio I/O buffer */
47: size_t iobufsiz; /* size of stdio I/O buffer */
1.1 deraadt 48:
1.8 millert 49: int main(int, char **);
1.7 pvalchev 50:
1.5 deraadt 51: int
1.10 deraadt 52: main(int argc, char *argv[])
1.1 deraadt 53: {
1.6 mpech 54: FS *tfs;
1.2 deraadt 55: char *p;
1.18 ! deraadt 56:
! 57: if (tame("stdio rpath", NULL) == -1)
! 58: err(1, "tame");
1.1 deraadt 59:
1.2 deraadt 60: if (!(p = strrchr(argv[0], 'o')) || strcmp(p, "od"))
1.1 deraadt 61: newsyntax(argc, &argv);
62: else
63: oldsyntax(argc, &argv);
64:
65: /* figure out the data block size */
66: for (blocksize = 0, tfs = fshead; tfs; tfs = tfs->nextfs) {
67: tfs->bcnt = size(tfs);
68: if (blocksize < tfs->bcnt)
69: blocksize = tfs->bcnt;
1.14 millert 70: }
71: if (length != -1) {
1.17 deraadt 72: iobufsiz = MINIMUM(length, blocksize);
1.14 millert 73: if ((iobuf = malloc(iobufsiz)) == NULL)
74: err(1, NULL);
1.1 deraadt 75: }
76: /* rewrite the rules, do syntax checking */
77: for (tfs = fshead; tfs; tfs = tfs->nextfs)
78: rewrite(tfs);
79:
80: (void)next(argv);
81: display();
82: exit(exitval);
83: }