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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
|
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2000,2001,2002 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Based on "src/misc.c" in etherboot-5.0.5. */
#define GRUB 1
#include <etherboot.h>
void
sleep (int secs)
{
unsigned long tmo = currticks () + secs;
while (currticks () < tmo)
;
}
void
twiddle (void)
{
static unsigned long lastticks = 0;
static int count = 0;
static const char tiddles[]="-\\|/";
unsigned long ticks;
if (debug)
{
if ((ticks = currticks ()) == lastticks)
return;
lastticks = ticks;
grub_putchar (tiddles[(count++) & 3]);
grub_putchar ('\b');
}
}
/* Because Etherboot uses its own formats for the printf family,
define separate definitions from GRUB. */
/**************************************************************************
PRINTF and friends
Formats:
%[#]x - 4 bytes long (8 hex digits, lower case)
%[#]X - 4 bytes long (8 hex digits, upper case)
%[#]hx - 2 bytes int (4 hex digits, lower case)
%[#]hX - 2 bytes int (4 hex digits, upper case)
%[#]hhx - 1 byte int (2 hex digits, lower case)
%[#]hhX - 1 byte int (2 hex digits, upper case)
- optional # prefixes 0x or 0X
%d - decimal int
%c - char
%s - string
%@ - Internet address in ddd.ddd.ddd.ddd notation
%! - Ethernet address in xx:xx:xx:xx:xx:xx notation
Note: width specification not supported
**************************************************************************/
static int
etherboot_vsprintf (char *buf, const char *fmt, const int *dp)
{
char *p, *s;
s = buf;
for ( ; *fmt != '\0'; ++fmt)
{
if (*fmt != '%')
{
buf ? *s++ = *fmt : grub_putchar (*fmt);
continue;
}
if (*++fmt == 's')
{
for (p = (char *) *dp++; *p != '\0'; p++)
buf ? *s++ = *p : grub_putchar (*p);
}
else
{
/* Length of item is bounded */
char tmp[20], *q = tmp;
int alt = 0;
int shift = 28;
if (*fmt == '#')
{
alt = 1;
fmt++;
}
if (*fmt == 'h')
{
shift = 12;
fmt++;
}
if (*fmt == 'h')
{
shift = 4;
fmt++;
}
/*
* Before each format q points to tmp buffer
* After each format q points past end of item
*/
if ((*fmt | 0x20) == 'x')
{
/* With x86 gcc, sizeof(long) == sizeof(int) */
const long *lp = (const long *) dp;
long h = *lp++;
int ncase = (*fmt & 0x20);
dp = (const int *) lp;
if (alt)
{
*q++ = '0';
*q++ = 'X' | ncase;
}
for (; shift >= 0; shift -= 4)
*q++ = "0123456789ABCDEF"[(h >> shift) & 0xF] | ncase;
}
else if (*fmt == 'd')
{
int i = *dp++;
char *r;
if (i < 0)
{
*q++ = '-';
i = -i;
}
p = q; /* save beginning of digits */
do
{
*q++ = '0' + (i % 10);
i /= 10;
}
while (i);
/* reverse digits, stop in middle */
r = q; /* don't alter q */
while (--r > p)
{
i = *r;
*r = *p;
*p++ = i;
}
}
else if (*fmt == '@')
{
unsigned char *r;
union
{
long l;
unsigned char c[4];
}
u;
const long *lp = (const long *) dp;
u.l = *lp++;
dp = (const int *) lp;
for (r = &u.c[0]; r < &u.c[4]; ++r)
q += etherboot_sprintf (q, "%d.", *r);
--q;
}
else if (*fmt == '!')
{
char *r;
p = (char *) *dp++;
for (r = p + ETH_ALEN; p < r; ++p)
q += etherboot_sprintf (q, "%hhX:", *p);
--q;
}
else if (*fmt == 'c')
*q++ = *dp++;
else
*q++ = *fmt;
/* now output the saved string */
for (p = tmp; p < q; ++p)
buf ? *s++ = *p : grub_putchar (*p);
}
}
if (buf)
*s = '\0';
return (s - buf);
}
int
etherboot_sprintf (char *buf, const char *fmt, ...)
{
return etherboot_vsprintf (buf, fmt, ((const int *) &fmt) + 1);
}
void
etherboot_printf (const char *fmt, ...)
{
(void) etherboot_vsprintf (0, fmt, ((const int *) &fmt) + 1);
}
int
inet_aton (char *p, in_addr *addr)
{
unsigned long ip = 0;
int val;
int i;
for (i = 0; i < 4; i++)
{
val = getdec (&p);
if (val < 0 || val > 255)
return 0;
if (i != 3 && *p++ != '.')
return 0;
ip = (ip << 8) | val;
}
addr->s_addr = htonl (ip);
return 1;
}
int
getdec (char **ptr)
{
char *p = *ptr;
int ret = 0;
if (*p < '0' || *p > '9')
return -1;
while (*p >= '0' && *p <= '9')
{
ret = ret * 10 + (*p - '0');
p++;
}
*ptr = p;
return ret;
}
|
