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
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
|
Index: linux-2.4.35.4/Documentation/Configure.help
===================================================================
--- linux-2.4.35.4.orig/Documentation/Configure.help
+++ linux-2.4.35.4/Documentation/Configure.help
@@ -10675,6 +10675,20 @@ CONFIG_TUN
If you don't know what to use this for, you don't need it.
+Allow Net Devices to contribute to /dev/random
+CONFIG_NET_RANDOM
+ If you say Y here, network device interrupts will contribute to the
+ kernel entropy pool. Normally, block devices and some other devices
+ feed the pool. Some systems, such as those that are headless or diskless,
+ need additional entropy sources. Some people, however, feel that network
+ devices should not contribute to /dev/random because an external attacker
+ could observe incoming packets in an attempt to learn the entropy pool's
+ state. If you say N, no network device will contribute entropy.
+
+ If you believe there is a chance of your network packets being observed
+ and you doubt the security of the entropy pool's one-way hash, do not
+ enable this. If unsure, say N.
+
Ethertap network tap (OBSOLETE)
CONFIG_ETHERTAP
If you say Y here (and have said Y to "Kernel/User network link
Index: linux-2.4.35.4/drivers/net/Config.in
===================================================================
--- linux-2.4.35.4.orig/drivers/net/Config.in
+++ linux-2.4.35.4/drivers/net/Config.in
@@ -8,6 +8,7 @@ tristate 'Dummy net driver support' CONF
tristate 'Bonding driver support' CONFIG_BONDING
tristate 'EQL (serial line load balancing) support' CONFIG_EQUALIZER
tristate 'Universal TUN/TAP device driver support' CONFIG_TUN
+bool 'Allow Net Devices to contribute to /dev/random' CONFIG_NET_RANDOM
if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
tristate 'Ethertap network tap (OBSOLETE)' CONFIG_ETHERTAP
fi
Index: linux-2.4.35.4/include/asm-alpha/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-alpha/signal.h
+++ linux-2.4.35.4/include/asm-alpha/signal.h
@@ -121,8 +121,15 @@ typedef unsigned long sigset_t;
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x40000000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 1 /* for blocking signals */
#define SIG_UNBLOCK 2 /* for unblocking signals */
#define SIG_SETMASK 3 /* for setting the signal mask */
Index: linux-2.4.35.4/include/asm-arm/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-arm/signal.h
+++ linux-2.4.35.4/include/asm-arm/signal.h
@@ -125,8 +125,15 @@ typedef unsigned long sigset_t;
#define SA_PROBE 0x80000000
#define SA_SAMPLE_RANDOM 0x10000000
#define SA_SHIRQ 0x04000000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 0 /* for blocking signals */
#define SIG_UNBLOCK 1 /* for unblocking signals */
#define SIG_SETMASK 2 /* for setting the signal mask */
Index: linux-2.4.35.4/include/asm-cris/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-cris/signal.h
+++ linux-2.4.35.4/include/asm-cris/signal.h
@@ -120,8 +120,15 @@ typedef unsigned long sigset_t;
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x04000000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 0 /* for blocking signals */
#define SIG_UNBLOCK 1 /* for unblocking signals */
#define SIG_SETMASK 2 /* for setting the signal mask */
Index: linux-2.4.35.4/include/asm-i386/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-i386/signal.h
+++ linux-2.4.35.4/include/asm-i386/signal.h
@@ -119,8 +119,15 @@ typedef unsigned long sigset_t;
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x04000000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 0 /* for blocking signals */
#define SIG_UNBLOCK 1 /* for unblocking signals */
#define SIG_SETMASK 2 /* for setting the signal mask */
Index: linux-2.4.35.4/include/asm-ia64/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-ia64/signal.h
+++ linux-2.4.35.4/include/asm-ia64/signal.h
@@ -117,6 +117,12 @@
#define SA_SHIRQ 0x04000000
#define SA_PERCPU_IRQ 0x02000000
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
+#endif
+
#endif /* __KERNEL__ */
#define SIG_BLOCK 0 /* for blocking signals */
Index: linux-2.4.35.4/include/asm-m68k/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-m68k/signal.h
+++ linux-2.4.35.4/include/asm-m68k/signal.h
@@ -116,8 +116,15 @@ typedef unsigned long sigset_t;
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x04000000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 0 /* for blocking signals */
#define SIG_UNBLOCK 1 /* for unblocking signals */
#define SIG_SETMASK 2 /* for setting the signal mask */
Index: linux-2.4.35.4/include/asm-mips/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-mips/signal.h
+++ linux-2.4.35.4/include/asm-mips/signal.h
@@ -111,6 +111,12 @@ typedef unsigned long old_sigset_t; /*
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x02000000
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
+#endif
+
#endif /* __KERNEL__ */
#define SIG_BLOCK 1 /* for blocking signals */
Index: linux-2.4.35.4/include/asm-mips64/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-mips64/signal.h
+++ linux-2.4.35.4/include/asm-mips64/signal.h
@@ -119,6 +119,12 @@ typedef unsigned int old_sigset_t32;
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x02000000
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
+#endif
+
#endif /* __KERNEL__ */
#define SIG_BLOCK 1 /* for blocking signals */
Index: linux-2.4.35.4/include/asm-parisc/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-parisc/signal.h
+++ linux-2.4.35.4/include/asm-parisc/signal.h
@@ -100,6 +100,12 @@
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x04000000
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
+#endif
+
#endif /* __KERNEL__ */
#define SIG_BLOCK 0 /* for blocking signals */
Index: linux-2.4.35.4/include/asm-ppc/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-ppc/signal.h
+++ linux-2.4.35.4/include/asm-ppc/signal.h
@@ -111,6 +111,13 @@ typedef struct {
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x04000000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
+#endif
+
#endif /* __KERNEL__ */
#define SIG_BLOCK 0 /* for blocking signals */
Index: linux-2.4.35.4/include/asm-s390/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-s390/signal.h
+++ linux-2.4.35.4/include/asm-s390/signal.h
@@ -129,8 +129,15 @@ typedef unsigned long sigset_t;
#define SA_SHIRQ 0x04000000
#define SA_DOPATHGROUP 0x00100000
#define SA_FORCE 0x00200000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 0 /* for blocking signals */
#define SIG_UNBLOCK 1 /* for unblocking signals */
#define SIG_SETMASK 2 /* for setting the signal mask */
Index: linux-2.4.35.4/include/asm-s390x/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-s390x/signal.h
+++ linux-2.4.35.4/include/asm-s390x/signal.h
@@ -129,8 +129,15 @@ typedef unsigned long sigset_t;
#define SA_SHIRQ 0x04000000
#define SA_DOPATHGROUP 0x00100000
#define SA_FORCE 0x00200000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 0 /* for blocking signals */
#define SIG_UNBLOCK 1 /* for unblocking signals */
#define SIG_SETMASK 2 /* for setting the signal mask */
Index: linux-2.4.35.4/include/asm-sh/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-sh/signal.h
+++ linux-2.4.35.4/include/asm-sh/signal.h
@@ -107,8 +107,15 @@ typedef struct {
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_SHIRQ 0x04000000
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
#define SIG_BLOCK 0 /* for blocking signals */
#define SIG_UNBLOCK 1 /* for unblocking signals */
#define SIG_SETMASK 2 /* for setting the signal mask */
Index: linux-2.4.35.4/include/asm-sparc/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-sparc/signal.h
+++ linux-2.4.35.4/include/asm-sparc/signal.h
@@ -176,8 +176,15 @@ struct sigstack {
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_STATIC_ALLOC 0x80
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
/* Type of a signal handler. */
#ifdef __KERNEL__
typedef void (*__sighandler_t)(int, int, struct sigcontext *, char *);
Index: linux-2.4.35.4/include/asm-sparc64/signal.h
===================================================================
--- linux-2.4.35.4.orig/include/asm-sparc64/signal.h
+++ linux-2.4.35.4/include/asm-sparc64/signal.h
@@ -192,8 +192,15 @@ struct sigstack {
#define SA_PROBE SA_ONESHOT
#define SA_SAMPLE_RANDOM SA_RESTART
#define SA_STATIC_ALLOC 0x80
+
+#ifdef CONFIG_NET_RANDOM
+#define SA_NET_RANDOM SA_SAMPLE_RANDOM
+#else
+#define SA_NET_RANDOM 0
#endif
+#endif /* __KERNEL__ */
+
/* Type of a signal handler. */
#ifdef __KERNEL__
typedef void (*__sighandler_t)(int, struct sigcontext *);
|
