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Root/tags/2.0/i386/util/fdisk/fdisk.c

Source at commit 1808 created 12 years 4 months ago.
By blackosx, Revise layout of package installer 'Welcome' file so it looks cleaner. Change the copyright notice to begin from 2009 as seen in the Chameleon 2.0 r431 installer. Should this date be set earlier?
1/*␊
2 * Copyright (c) 2002 Apple Computer, Inc. All rights reserved.␊
3 *␊
4 * @APPLE_LICENSE_HEADER_START@␊
5 * ␊
6 * This file contains Original Code and/or Modifications of Original Code␊
7 * as defined in and that are subject to the Apple Public Source License␊
8 * Version 2.0 (the 'License'). You may not use this file except in␊
9 * compliance with the License. Please obtain a copy of the License at␊
10 * http://www.opensource.apple.com/apsl/ and read it before using this␊
11 * file.␊
12 * ␊
13 * The Original Code and all software distributed under the License are␊
14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊
15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊
16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊
17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊
18 * Please see the License for the specific language governing rights and␊
19 * limitations under the License.␊
20 * ␊
21 * @APPLE_LICENSE_HEADER_END@␊
22 */␊
23␊
24␊
25/*␊
26 * Copyright (c) 1997 Tobias Weingartner␊
27 * All rights reserved.␊
28 *␊
29 * Redistribution and use in source and binary forms, with or without␊
30 * modification, are permitted provided that the following conditions␊
31 * are met:␊
32 * 1. Redistributions of source code must retain the above copyright␊
33 * notice, this list of conditions and the following disclaimer.␊
34 * 2. Redistributions in binary form must reproduce the above copyright␊
35 * notice, this list of conditions and the following disclaimer in the␊
36 * documentation and/or other materials provided with the distribution.␊
37 * 3. All advertising materials mentioning features or use of this software␊
38 * must display the following acknowledgement:␊
39 * This product includes software developed by Tobias Weingartner.␊
40 * 4. The name of the author may not be used to endorse or promote products␊
41 * derived from this software without specific prior written permission.␊
42 *␊
43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR␊
44 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES␊
45 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.␊
46 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,␊
47 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT␊
48 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,␊
49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY␊
50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT␊
51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF␊
52 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊
53 */␊
54␊
55#include <err.h>␊
56#include <stdio.h>␊
57#include <stdlib.h>␊
58#include <string.h>␊
59#include <unistd.h>␊
60#include <paths.h>␊
61#include <sys/types.h>␊
62#include <sys/fcntl.h>␊
63#include "disk.h"␊
64#include "user.h"␊
65#include "auto.h"␊
66␊
67#define _PATH_MBR "/usr/standalone/i386/boot0"␊
68␊
69void␊
70usage()␊
71{␊
72␉extern char * __progname;␊
73␉fprintf(stderr, "usage: %s "␊
74␉ "[-ieu] [-f mbrboot] [-c cyl -h head -s sect] [-S size] [-r] [-a style] disk\n"␊
75␉ "\t-i: initialize disk with new MBR\n"␊
76␉ "\t-u: update MBR code, preserve partition table\n"␊
77␉ "\t-e: edit MBRs on disk interactively\n"␊
78␉ "\t-f: specify non-standard MBR template\n"␊
79␉ "\t-chs: specify disk geometry\n"␊
80␉ "\t-S: specify disk size\n"␊
81␉ "\t-r: read partition specs from stdin (implies -i)\n"␊
82␉ "\t-a: auto-partition with the given style\n"␊
83␉ "\t-d: dump partition table\n"␊
84␉ "\t-y: don't ask any questions\n"␊
85␉ "\t-t: test if disk is partitioned\n"␊
86␉ "`disk' is of the form /dev/rdisk0.\n",␊
87␉ __progname);␊
88␉fprintf(stderr, "auto-partition styles:\n");␊
89␉AUTO_print_styles(stderr);␊
90␉exit(1);␊
91}␊
92␊
93char *mbr_binary = NULL;␊
94int␊
95main(argc, argv)␊
96␉int argc;␊
97␉char **argv;␊
98{␊
99␉int ch, fd;␊
100␉int i_flag = 0, m_flag = 0, u_flag = 0, r_flag = 0, d_flag = 0, y_flag = 0, t_flag = 0;␊
101␉int c_arg = 0, h_arg = 0, s_arg = 0;␊
102␉int size_arg = 0;␊
103␉int block_size_arg = 0;␊
104␉disk_t disk;␊
105␉DISK_metrics *usermetrics;␊
106␉char *mbrfile = _PATH_MBR;␊
107␉mbr_t *mp;␊
108␉char *auto_style = NULL;␊
109␊
110␉while ((ch = getopt(argc, argv, "ieuf:c:h:s:b:S:ra:dyt")) != -1) {␊
111␉␉switch(ch) {␊
112␉␉case 'i':␊
113␉␉␉i_flag = 1;␊
114␉␉␉break;␊
115␉␉case 'u':␊
116␉␉␉u_flag = 1;␊
117␉␉␉break;␊
118␉␉case 'e':␊
119␉␉␉m_flag = 1;␊
120␉␉␉break;␊
121␉␉case 'f':␊
122␉␉␉mbrfile = optarg;␊
123␉␉␉break;␊
124␉␉case 'c':␊
125␉␉␉c_arg = atoi(optarg);␊
126␉␉␉if (c_arg < 1 || c_arg > 262144)␊
127␉␉␉␉errx(1, "Cylinder argument out of range.");␊
128␉␉␉break;␊
129␉␉case 'h':␊
130␉␉␉h_arg = atoi(optarg);␊
131␉␉␉if (h_arg < 1 || h_arg > 256)␊
132␉␉␉␉errx(1, "Head argument out of range.");␊
133␉␉␉break;␊
134␉␉case 's':␊
135␉␉␉s_arg = atoi(optarg);␊
136␉␉␉if (s_arg < 1 || s_arg > 63)␊
137␉␉␉␉errx(1, "Sector argument out of range.");␊
138␉␉␉break;␊
139␉␉case 'b':␊
140␉␉␉block_size_arg = atoi(optarg);␊
141␉␉␉if (block_size_arg & (block_size_arg - 1))␊
142␉␉␉␉errx(1, "Block size argument not a power of two.");␊
143␉␉␉if (block_size_arg < 512 || block_size_arg > 4096)␊
144␉␉␉␉errx(1, "Block size argument out of range 512..4096.");␊
145␉␉␉break;␊
146␉␉case 'S':␊
147␉␉ size_arg = atoi(optarg);␊
148␉␉␉break;␊
149␉␉case 'r':␊
150␉␉␉r_flag = 1;␊
151␉␉␉break;␊
152␉␉case 'a':␊
153␉␉ auto_style = optarg;␊
154␉␉␉break;␊
155␉␉case 'd':␊
156␉␉ d_flag = 1;␊
157␉␉␉break;␊
158␉␉case 'y':␊
159␉␉ y_flag = 1;␊
160␉␉␉break;␊
161␉␉case 't':␊
162␉␉ t_flag = 1;␊
163␉␉␉break;␊
164␉␉default:␊
165␉␉␉usage();␊
166␉␉}␊
167␉}␊
168␉argc -= optind;␊
169␉argv += optind;␊
170␊
171␉/* Argument checking */␊
172␉if (argc != 1)␊
173␉␉usage();␊
174␉else␊
175␉␉disk.name = argv[0];␊
176␊
177␉if (i_flag && u_flag) errx(1, "-i and -u cannot be specified simultaneously");␊
178␊
179␉/* Put in supplied geometry if there */␊
180␉if (c_arg | h_arg | s_arg | size_arg | block_size_arg) {␊
181␉␉usermetrics = malloc(sizeof(DISK_metrics));␊
182␉␉if (usermetrics != NULL) {␊
183␉␉␉if (c_arg && h_arg && s_arg) {␊
184␉␉␉␉usermetrics->cylinders = c_arg;␊
185␉␉␉␉usermetrics->heads = h_arg;␊
186␉␉␉␉usermetrics->sectors = s_arg;␊
187␉␉␉␉if (size_arg) {␊
188␉␉␉␉ usermetrics->size = size_arg;␊
189␉␉␉␉} else {␊
190␉␉␉␉ usermetrics->size = c_arg * h_arg * s_arg;␊
191␉␉␉␉}␊
192␉␉␉} else {␊
193␉␉␉ if (size_arg) {␊
194␉␉␉ usermetrics->size = size_arg;␊
195␉␉␉ DISK_fake_CHS(usermetrics);␊
196␉␉␉ } else {␊
197␉␉␉ errx(1, "Please specify a full geometry with [-chs].");␊
198␉␉␉ }␊
199␉␉␉}␊
200␉␉␉if (block_size_arg) {␊
201␉␉␉␉usermetrics->sector_size = block_size_arg;␊
202␉␉␉} else {␊
203␉␉␉␉DISK_get_sector_size(&disk, usermetrics);␊
204␉␉␉}␊
205␉␉}␊
206␉} else {␊
207␉␉usermetrics = NULL;␊
208␉}␊
209␊
210␉/* Get the geometry */␊
211␉disk.real = NULL;␊
212␉if (DISK_getmetrics(&disk, usermetrics))␊
213␉␉errx(1, "Can't get disk geometry, please use [-chs] to specify.");␊
214␊
215␉/* If only testing, read MBR and silently exit */␊
216␉if (t_flag) {␊
217␉ mbr_t *mbr;␊
218␊
219␉ mp = mbr = MBR_read_all(&disk);␊
220␉ while (mp) {␊
221␉ if (mp->signature != MBR_SIGNATURE) {␊
222␉ MBR_free(mbr);␊
223␉ exit(1);␊
224␉ }␊
225␉ mp = mp->next;␊
226␉ }␊
227␉ MBR_free(mbr);␊
228␉ exit(0);␊
229␉}␊
230␊
231␉/* If not editing the disk, print out current MBRs on disk */␊
232␉if ((i_flag + r_flag + u_flag + m_flag) == 0) {␊
233␉␉exit(USER_print_disk(&disk, d_flag));␊
234␉}␊
235␊
236␉/* Parse mbr template or read partition specs, to pass on later */␊
237␉if (auto_style && r_flag) {␊
238␉ errx(1, "Can't specify both -r and -a");␊
239␉}␊
240␊
241␉mbr_binary = (char *)malloc(MBR_CODE_SIZE);␊
242␉if ((fd = open(mbrfile, O_RDONLY)) == -1) {␊
243␉ warn("could not open MBR file %s", mbrfile);␊
244␉ bzero(mbr_binary, MBR_CODE_SIZE);␊
245␉} else {␊
246␉ int cc;␊
247␉ cc = read(fd, mbr_binary, MBR_CODE_SIZE);␊
248␉ if (cc < MBR_CODE_SIZE) {␊
249␉ err(1, "could not read MBR code");␊
250␉ }␊
251␉ close(fd);␊
252␉}␊
253␊
254␉if (u_flag) {␊
255␉ /* Don't hose the partition table; just write the boot code */␊
256␉ mp = MBR_read_all(&disk);␊
257␉ bcopy(mbr_binary, mp->code, MBR_CODE_SIZE);␊
258␉ MBR_make(mp);␊
259␉} else if (i_flag) {␊
260␉ /* If they didn't specify -a, they'll get the default auto style */␊
261␉ mp = MBR_alloc(NULL);␊
262␉ if (AUTO_init(&disk, auto_style, mp) != AUTO_OK) {␊
263␉ errx(1, "error initializing disk");␊
264␉ }␊
265␉ bcopy(mbr_binary, mp->code, MBR_CODE_SIZE);␊
266␉ MBR_make(mp);␊
267␉} else if (r_flag) {␊
268␉ mp = MBR_parse_spec(stdin, &disk);␊
269␉ bcopy(mbr_binary, mp->code, MBR_CODE_SIZE);␊
270␉ MBR_make(mp);␊
271␉} else {␊
272␉ /* Use what's on the disk. */␊
273␉ mp = MBR_read_all(&disk);␊
274␉}␊
275␉ ␊
276␉/* Now do what we are supposed to */␊
277␉if (i_flag || r_flag || u_flag) {␊
278␉ USER_write(&disk, mp, u_flag, y_flag);␊
279␉}␊
280␊
281␉if (m_flag) {␊
282␉ USER_modify(&disk, mp, 0, 0);␊
283␉}␊
284␊
285␉if (mbr_binary)␊
286␉ free(mbr_binary);␊
287␊
288␉return (0);␊
289}␊
290

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