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Root/tags/2.0/i386/util/fdisk/user.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 <util.h>␊
57#include <stdio.h>␊
58#include <unistd.h>␊
59#include <string.h>␊
60#include <sys/fcntl.h>␊
61#include <sys/types.h>␊
62#include <sys/stat.h>␊
63#include <machine/param.h>␊
64#include "user.h"␊
65#include "disk.h"␊
66#include "misc.h"␊
67#include "mbr.h"␊
68#include "cmd.h"␊
69␊
70␊
71/* Our command table */␊
72static cmd_table_t cmd_table[] = {␊
73␉{"help", Xhelp,␉"Command help list"},␊
74␉{"manual", Xmanual,␉"Show entire man page for fdisk"},␊
75␉{"reinit", Xreinit,␉"Re-initialize loaded MBR (to defaults)"},␊
76␉{"auto", Xauto, "Auto-partition the disk with a partition style"},␊
77␉{"setpid", Xsetpid,␉"Set the identifier of a given table entry"},␊
78␉{"disk", Xdisk,␉"Edit current drive stats"},␊
79␉{"edit", Xedit,␉"Edit given table entry"},␊
80␉{"erase", Xerase, "Erase current MBR"},␊
81␉{"flag", Xflag,␉"Flag given table entry as bootable"},␊
82␉{"update", Xupdate,␉"Update machine code in loaded MBR"},␊
83␉{"select", Xselect,␉"Select extended partition table entry MBR"},␊
84␉{"print", Xprint,␉"Print loaded MBR partition table"},␊
85␉{"write", Xwrite,␉"Write loaded MBR to disk"},␊
86␉{"exit", Xexit,␉"Exit edit of current MBR, without saving changes"},␊
87␉{"quit", Xquit,␉"Quit edit of current MBR, saving current changes"},␊
88␉{"abort", Xabort,␉"Abort program without saving current changes"},␊
89␉{NULL, NULL,␉NULL}␊
90};␊
91␊
92␊
93int␊
94USER_write(disk, tt, preserve, force)␊
95␉disk_t *disk;␊
96␉mbr_t *tt; /* Template MBR to write */␊
97␉int preserve; /* Preserve partition table and just write boot code */␊
98␉int force; /* Don't ask any questions */␊
99{␊
100␉int fd, yn;␊
101␉char *msgp = "\nDo you wish to write new MBR?";␊
102␉char *msgk = "\nDo you wish to write new MBR and partition table?";␊
103␊
104␉/* Write sector 0 */␊
105␉if (force) {␊
106␉ yn = 1;␊
107␉} else {␊
108␉ printf("\a\n"␊
109␉␉ "\t-----------------------------------------------------\n"␊
110␉␉ "\t------ ATTENTION - UPDATING MASTER BOOT RECORD ------\n"␊
111␉␉ "\t-----------------------------------------------------\n");␊
112␉ if (preserve)␊
113␉ yn = ask_yn(msgp, 0);␊
114␉ else␊
115␉ yn = ask_yn(msgk, 0);␊
116␉}␊
117␊
118␉if (yn) {␊
119␉ if (preserve) {␊
120␉ int shared;␊
121␉ /* Only write the first one, if there's more than one in an extended partition chain */␊
122␉ /* Since we're updating boot code, we don't require exclusive access */␊
123␉ fd = DISK_openshared(disk->name, O_RDWR, &shared);␊
124␉ MBR_make(tt);␊
125␉ MBR_write(disk, fd, tt);␊
126␉ DISK_close(fd);␊
127␉ } else {␊
128␉ MBR_write_all(disk, tt);␊
129␉ }␊
130␉} else {␊
131␉ printf("MBR is unchanged\n");␊
132␉}␊
133␊
134␉return (0);␊
135}␊
136␊
137␊
138int␊
139USER_modify(disk, tt, offset, reloff)␊
140␉disk_t *disk;␊
141␉mbr_t *tt;␊
142␉off_t offset;␊
143␉off_t reloff;␊
144{␊
145␉static int editlevel;␊
146␉mbr_t *mbr;␊
147␉cmd_t cmd;␊
148␉int i, st, fd;␊
149␉int modified = 0;␉␊
150␊
151␉/* One level deeper */␊
152␉editlevel += 1;␊
153␊
154␉/* Set up command table pointer */␊
155␉cmd.table = cmd_table;␊
156␊
157␉/* Read MBR & partition */␊
158␉mbr = MBR_alloc(NULL);␊
159␉fd = DISK_open(disk->name, O_RDONLY);␊
160␉MBR_read(disk, fd, offset, mbr);␊
161␉DISK_close(fd);␊
162␊
163␉/* Parse the sucker */␊
164␉MBR_parse(disk, offset, reloff, mbr);␊
165␊
166␉if (mbr->signature != MBR_SIGNATURE) {␊
167␉ int yn = ask_yn("The signature for this MBR is invalid.\nWould you like to initialize the partition table?", 1);␊
168␉ if (yn) {␊
169␉ strcpy(cmd.cmd, "erase");␊
170␉ cmd.args[0] = '\0';␊
171␉ st = Xerase(&cmd, disk, mbr, tt, offset);␊
172␉ modified = 1;␊
173␉ }␊
174␉}␊
175␊
176␉printf("Enter 'help' for information\n");␊
177␊
178␉/* Edit cycle */␊
179␉do {␊
180again:␊
181␉␉printf("fdisk:%c%d> ", (modified)?'*':' ', editlevel);␊
182␉␉fflush(stdout);␊
183␉␉ask_cmd(&cmd);␊
184␊
185␉␉if (cmd.cmd[0] == '\0')␊
186␉␉␉goto again;␊
187␉␉for (i = 0; cmd_table[i].cmd != NULL; i++)␊
188␉␉␉if (strstr(cmd_table[i].cmd, cmd.cmd)==cmd_table[i].cmd)␊
189␉␉␉␉break;␊
190␊
191␉␉/* Quick hack to put in '?' == 'help' */␊
192␉␉if (!strcmp(cmd.cmd, "?"))␊
193␉␉␉i = 0;␊
194␊
195␉␉/* Check for valid command */␊
196␉␉if (cmd_table[i].cmd == NULL) {␊
197␉␉␉printf("Invalid command '%s'. Try 'help'.\n", cmd.cmd);␊
198␉␉␉continue;␊
199␉␉} else␊
200␉␉␉strcpy(cmd.cmd, cmd_table[i].cmd);␊
201␊
202␉␉/* Call function */␊
203␉␉st = cmd_table[i].fcn(&cmd, disk, mbr, tt, offset);␊
204␊
205␉␉/* Update status */␊
206␉␉if (st == CMD_EXIT)␊
207␉␉␉break;␊
208␉␉if (st == CMD_SAVE)␊
209␉␉␉break;␊
210␉␉if (st == CMD_CLEAN)␊
211␉␉␉modified = 0;␊
212␉␉if (st == CMD_DIRTY)␊
213␉␉␉modified = 1;␊
214␉} while (1);␊
215␊
216␉/* Write out MBR */␊
217␉if (modified) {␊
218␉␉if (st == CMD_SAVE) {␊
219␉␉ ␉int shared = 0;␊
220␉␉␉printf("Writing current MBR to disk.\n");␊
221␉␉␉fd = DISK_openshared(disk->name, O_RDWR, &shared);␊
222␉␉␉if(shared) {␊
223 ␉␉␉ if(!ask_yn("Device could not be accessed exclusively.\nA reboot will be needed for changes to take effect. OK?", 0)) {␊
224␉␉␉ close(fd);␊
225␉␉␉ goto again;␊
226␉␉␉ }␊
227␉␉␉}␊
228␊
229␉␉␉MBR_make(mbr);␊
230␉␉␉MBR_write(disk, fd, mbr);␊
231␉␉␉close(fd);␊
232␉␉} else {␊
233␉ int yn = ask_yn("MBR was modified; really quit without saving?", 0);␊
234␉␉␉if (yn) {␊
235␉␉␉␉printf("Aborting changes to current MBR.\n");␊
236␉␉␉} else {␊
237␉␉␉␉goto again;␊
238␉␉␉}␊
239␉␉}␊
240␉}␊
241␊
242␉/* One level less */␊
243␉editlevel -= 1;␊
244␊
245␉MBR_free(mbr);␊
246␉␊
247␉return (0);␊
248}␊
249␊
250int␊
251USER_print_disk(disk, do_dump)␊
252␉disk_t *disk;␊
253␉int do_dump;␊
254{␊
255␉int fd, offset, firstoff;␊
256␉mbr_t *mbr;␊
257␊
258␉fd = DISK_open(disk->name, O_RDONLY);␊
259␉offset = firstoff = 0;␊
260␊
261␉if (!do_dump)␊
262␉ DISK_printmetrics(disk);␊
263␊
264␉mbr = MBR_read_all(disk);␊
265␉if (do_dump)␊
266␉ MBR_dump_all(mbr);␊
267␉else␊
268␉ MBR_print_all(mbr);␊
269␉MBR_free(mbr);␊
270␊
271␉return (DISK_close(fd));␊
272}␊
273␊
274␊
275␊
276

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