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
|
/*
* Copyright (c) 2009, 2010 Jeff Mahoney <jeffm@suse.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "defs.h"
#include <linux/blkpg.h>
#include <linux/fs.h>
#include <linux/hdreg.h>
/* ioctls <= 114 are present in Linux 2.4. The following ones have been
* added since then and headers containing them may not be available on
* every system. */
#define BLKTRACE_BDEV_SIZE 32
struct blk_user_trace_setup {
char name[BLKTRACE_BDEV_SIZE]; /* output */
uint16_t act_mask; /* input */
uint32_t buf_size; /* input */
uint32_t buf_nr; /* input */
uint64_t start_lba;
uint64_t end_lba;
uint32_t pid;
};
#ifndef BLKTRACESETUP
#define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
#endif
#ifndef BLKTRACESTART
#define BLKTRACESTART _IO(0x12,116)
#endif
#ifndef BLKTRACESTOP
#define BLKTRACESTOP _IO(0x12,117)
#endif
#ifndef BLKTRACETEARDOWN
#define BLKTRACETEARDOWN _IO(0x12,118)
#endif
#ifndef BLKDISCARD
#define BLKDISCARD _IO(0x12,119)
#endif
#ifndef BLKIOMIN
#define BLKIOMIN _IO(0x12,120)
#endif
#ifndef BLKIOOPT
#define BLKIOOPT _IO(0x12,121)
#endif
#ifndef BLKALIGNOFF
#define BLKALIGNOFF _IO(0x12,122)
#endif
#ifndef BLKPBSZGET
#define BLKPBSZGET _IO(0x12,123)
#endif
#ifndef BLKDISCARDZEROES
#define BLKDISCARDZEROES _IO(0x12,124)
#endif
#ifndef BLKSECDISCARD
#define BLKSECDISCARD _IO(0x12,125)
#endif
static const struct xlat blkpg_ops[] = {
XLAT(BLKPG_ADD_PARTITION),
XLAT(BLKPG_DEL_PARTITION),
XLAT_END
};
static void
print_blkpg_req(struct tcb *tcp, struct blkpg_ioctl_arg *blkpg)
{
struct blkpg_partition p;
tprints("{");
printxval(blkpg_ops, blkpg->op, "BLKPG_???");
tprintf(", flags=%d, datalen=%d, ",
blkpg->flags, blkpg->datalen);
if (umove(tcp, (long) blkpg->data, &p) < 0)
tprintf("%#lx}", (long) blkpg->data);
else
tprintf("{start=%lld, length=%lld, pno=%d, "
"devname=\"%.*s\", volname=\"%.*s\"}}",
p.start, p.length, p.pno,
(int) sizeof(p.devname), p.devname,
(int) sizeof(p.volname), p.volname);
}
int
block_ioctl(struct tcb *tcp, long code, long arg)
{
switch (code) {
/* take arg as a value, not as a pointer */
case BLKRASET:
case BLKFRASET:
if (entering(tcp))
tprintf(", %ld", arg);
break;
/* take a signed int */
case BLKROSET:
case BLKBSZSET:
if (entering(tcp)) {
int val;
if (umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %d", val);
}
break;
/* returns an unsigned short */
case BLKSECTGET:
if (exiting(tcp)) {
unsigned short val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %u", (unsigned)val);
}
break;
/* return a signed int */
case BLKROGET:
case BLKBSZGET:
case BLKSSZGET:
case BLKALIGNOFF:
if (exiting(tcp)) {
int val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %d", val);
}
break;
/* return an unsigned int */
case BLKPBSZGET:
case BLKIOMIN:
case BLKIOOPT:
case BLKDISCARDZEROES:
if (exiting(tcp)) {
unsigned int val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %u", val);
}
break;
/* return a signed long */
case BLKRAGET:
case BLKFRAGET:
if (exiting(tcp)) {
long val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %ld", val);
}
break;
/* returns an unsigned long */
case BLKGETSIZE:
if (exiting(tcp)) {
unsigned long val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %lu", val);
}
break;
#ifdef HAVE_BLKGETSIZE64
/* return an uint64_t */
case BLKGETSIZE64:
if (exiting(tcp)) {
uint64_t val;
if (syserror(tcp) || umove(tcp, arg, &val) < 0)
tprintf(", %#lx", arg);
else
tprintf(", %" PRIu64, val);
}
break;
#endif
/* More complex types */
case BLKDISCARD:
case BLKSECDISCARD:
if (entering(tcp)) {
uint64_t range[2];
if (umove(tcp, arg, range) < 0)
tprintf(", %#lx", arg);
else
tprintf(", {%" PRIx64 ", %" PRIx64 "}",
range[0], range[1]);
}
break;
case HDIO_GETGEO:
if (exiting(tcp)) {
struct hd_geometry geo;
if (syserror(tcp) || umove(tcp, arg, &geo) < 0)
tprintf(", %#lx", arg);
else
tprintf(", {heads=%u, sectors=%u, "
"cylinders=%u, start=%lu}",
(unsigned)geo.heads,
(unsigned)geo.sectors,
(unsigned)geo.cylinders,
geo.start);
}
break;
case BLKPG:
if (entering(tcp)) {
struct blkpg_ioctl_arg blkpg;
if (umove(tcp, arg, &blkpg) < 0)
tprintf(", %#lx", arg);
else {
tprints(", ");
print_blkpg_req(tcp, &blkpg);
}
}
break;
case BLKTRACESETUP:
if (entering(tcp)) {
struct blk_user_trace_setup buts;
if (umove(tcp, arg, &buts) < 0)
tprintf(", %#lx", arg);
else
tprintf(", {act_mask=%u, buf_size=%u, "
"buf_nr=%u, start_lba=%" PRIu64 ", "
"end_lba=%" PRIu64 ", pid=%u}",
(unsigned)buts.act_mask, buts.buf_size,
buts.buf_nr, buts.start_lba,
buts.end_lba, buts.pid);
}
if (exiting(tcp)) {
struct blk_user_trace_setup buts;
if (syserror(tcp) || umove(tcp, arg, &buts) < 0)
tprintf(", %#lx", arg);
else
tprintf(", {name=\"%.*s\"}",
(int) sizeof(buts.name), buts.name);
}
break;
/* No arguments or unhandled */
case BLKTRACESTART:
case BLKTRACESTOP:
case BLKTRACETEARDOWN:
case BLKFLSBUF: /* Requires driver knowlege */
case BLKRRPART: /* No args */
default:
if (entering(tcp))
tprintf(", %#lx", arg);
break;
};
return 1;
}
|
