1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/* $OpenBSD: user.c,v 1.55 2021/05/15 15:20:17 krw Exp $ */
/*
* Copyright (c) 1997 Tobias Weingartner
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/disklabel.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "part.h"
#include "mbr.h"
#include "misc.h"
#include "cmd.h"
#include "user.h"
#include "gpt.h"
#include "disk.h"
/* Our command table */
struct cmd cmd_table[] = {
{"help", 1, Xhelp, "Command help list"},
{"manual", 1, Xmanual, "Show entire OpenBSD man page for fdisk"},
{"reinit", 1, Xreinit, "Re-initialize loaded MBR (to defaults)"},
{"setpid", 1, Xsetpid, "Set the identifier of a given table entry"},
{"disk", 0, Xdisk, "Edit current drive stats"},
{"edit", 1, Xedit, "Edit given table entry"},
{"flag", 1, Xflag, "Flag given table entry as bootable"},
{"update", 0, Xupdate, "Update machine code in loaded MBR"},
{"select", 0, Xselect, "Select extended partition table entry MBR"},
{"swap", 1, Xswap, "Swap two partition entries"},
{"print", 1, Xprint, "Print loaded MBR partition table"},
{"write", 1, Xwrite, "Write loaded MBR to disk"},
{"exit", 1, Xexit, "Exit edit of current MBR, without saving changes"},
{"quit", 1, Xquit, "Quit edit of current MBR, saving current changes"},
{"abort", 1, Xabort, "Abort program without saving current changes"},
{NULL, 0, NULL, NULL}
};
int modified;
void
USER_edit(off_t offset, off_t reloff)
{
static int editlevel;
struct dos_mbr dos_mbr;
struct mbr mbr;
char *cmd, *args;
int i, st, efi, error;
/* One level deeper */
editlevel += 1;
/* Read MBR & partition */
error = MBR_read(offset, &dos_mbr);
if (error == -1)
goto done;
/* Parse the sucker */
MBR_parse(&dos_mbr, offset, reloff, &mbr);
if (editlevel == 1) {
memset(&gh, 0, sizeof(gh));
memset(&gp, 0, sizeof(gp));
efi = MBR_protective_mbr(&mbr);
if (efi != -1)
GPT_read(ANYGPT);
}
printf("Enter 'help' for information\n");
/* Edit cycle */
again:
do {
printf("%s%s: %d> ", disk.name, modified ? "*" : "", editlevel);
fflush(stdout);
ask_cmd(&cmd, &args);
if (cmd[0] == '\0')
continue;
for (i = 0; cmd_table[i].cmd != NULL; i++)
if (strstr(cmd_table[i].cmd, cmd) == cmd_table[i].cmd)
break;
/* Quick hack to put in '?' == 'help' */
if (!strcmp(cmd, "?"))
i = 0;
/* Check for valid command */
if ((cmd_table[i].cmd == NULL) || (letoh64(gh.gh_sig) ==
GPTSIGNATURE && cmd_table[i].gpt == 0)) {
printf("Invalid command '%s'. Try 'help'.\n", cmd);
continue;
}
/* Call function */
st = cmd_table[i].fcn(args, &mbr);
/* Update status */
if (st == CMD_EXIT)
break;
if (st == CMD_SAVE)
break;
if (st == CMD_CLEAN)
modified = 0;
if (st == CMD_DIRTY)
modified = 1;
} while (1);
/* Write out MBR */
if (modified) {
if (st == CMD_SAVE) {
if (Xwrite(NULL, &mbr) == CMD_CONT)
goto again;
} else
printf("Aborting changes to current MBR.\n");
}
done:
/* One level less */
editlevel -= 1;
}
void
USER_print_disk(int verbosity)
{
off_t offset, firstoff;
int i, efi, error;
struct dos_mbr dos_mbr;
struct mbr mbr;
offset = firstoff = 0;
do {
error = MBR_read(offset, &dos_mbr);
if (error == -1)
break;
MBR_parse(&dos_mbr, offset, firstoff, &mbr);
if (offset == 0) {
efi = MBR_protective_mbr(&mbr);
if (efi == -1) {
/* No valid 0xEE partition means no GPT. */
if (verbosity == VERBOSE) {
printf("Primary GPT:\nNot Found\n");
printf("\nSecondary GPT:\nNot Found\n");
}
} else if (verbosity == TERSE) {
/* Should already have read one of Primary/Secondary GPT. */
if (letoh64(gh.gh_sig) == GPTSIGNATURE) {
GPT_print("s", verbosity);
return;
}
} else {
/*. Read & print both primary and secondary GPT. */
printf("Primary GPT:\n");
GPT_read(PRIMARYGPT);
if (letoh64(gh.gh_sig) == GPTSIGNATURE)
GPT_print("s", verbosity);
else
printf("\tNot Found\n");
printf("\nSecondary GPT:\n");
GPT_read(SECONDARYGPT);
if (letoh64(gh.gh_sig) == GPTSIGNATURE)
GPT_print("s", verbosity);
else
printf("\tNot Found\n");
}
if (verbosity == VERBOSE)
printf("\nMBR:\n");
}
MBR_print(&mbr, NULL);
/* Print out extended partitions too */
for (offset = i = 0; i < 4; i++)
if (mbr.part[i].id == DOSPTYP_EXTEND ||
mbr.part[i].id == DOSPTYP_EXTENDL) {
offset = (off_t)mbr.part[i].bs;
if (firstoff == 0)
firstoff = offset;
}
} while (offset);
}
|
