1 /*
2 * Copyright (c) 2009, 2010 Jeff Mahoney <jeffm@suse.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "defs.h"
29 #include <linux/blkpg.h>
30 #include <linux/fs.h>
31 #include <linux/hdreg.h>
32
33 /* ioctls <= 114 are present in Linux 2.4. The following ones have been
34 * added since then and headers containing them may not be available on
35 * every system. */
36
37 #define BLKTRACE_BDEV_SIZE 32
38 struct blk_user_trace_setup {
39 char name[BLKTRACE_BDEV_SIZE]; /* output */
40 uint16_t act_mask; /* input */
41 uint32_t buf_size; /* input */
42 uint32_t buf_nr; /* input */
43 uint64_t start_lba;
44 uint64_t end_lba;
45 uint32_t pid;
46 };
47
48 #ifndef BLKTRACESETUP
49 #define BLKTRACESETUP _IOWR(0x12,115,struct blk_user_trace_setup)
50 #endif
51 #ifndef BLKTRACESTART
52 #define BLKTRACESTART _IO(0x12,116)
53 #endif
54 #ifndef BLKTRACESTOP
55 #define BLKTRACESTOP _IO(0x12,117)
56 #endif
57 #ifndef BLKTRACETEARDOWN
58 #define BLKTRACETEARDOWN _IO(0x12,118)
59 #endif
60 #ifndef BLKDISCARD
61 #define BLKDISCARD _IO(0x12,119)
62 #endif
63 #ifndef BLKIOMIN
64 #define BLKIOMIN _IO(0x12,120)
65 #endif
66 #ifndef BLKIOOPT
67 #define BLKIOOPT _IO(0x12,121)
68 #endif
69 #ifndef BLKALIGNOFF
70 #define BLKALIGNOFF _IO(0x12,122)
71 #endif
72 #ifndef BLKPBSZGET
73 #define BLKPBSZGET _IO(0x12,123)
74 #endif
75 #ifndef BLKDISCARDZEROES
76 #define BLKDISCARDZEROES _IO(0x12,124)
77 #endif
78 #ifndef BLKSECDISCARD
79 #define BLKSECDISCARD _IO(0x12,125)
80 #endif
81
82 #include "xlat/blkpg_ops.h"
83
84 static void
print_blkpg_req(struct tcb * tcp,struct blkpg_ioctl_arg * blkpg)85 print_blkpg_req(struct tcb *tcp, struct blkpg_ioctl_arg *blkpg)
86 {
87 struct blkpg_partition p;
88
89 tprints("{");
90 printxval(blkpg_ops, blkpg->op, "BLKPG_???");
91
92 tprintf(", flags=%d, datalen=%d, ",
93 blkpg->flags, blkpg->datalen);
94
95 if (umove(tcp, (long) blkpg->data, &p) < 0)
96 tprintf("%#lx}", (long) blkpg->data);
97 else {
98 tprintf("{start=%lld, length=%lld, pno=%d, devname=",
99 p.start, p.length, p.pno);
100 print_quoted_string(p.devname, sizeof(p.devname),
101 QUOTE_0_TERMINATED);
102 tprints(", volname=");
103 print_quoted_string(p.volname, sizeof(p.volname),
104 QUOTE_0_TERMINATED);
105 tprints("}}");
106 }
107 }
108
109 int
block_ioctl(struct tcb * tcp,const unsigned int code,long arg)110 block_ioctl(struct tcb *tcp, const unsigned int code, long arg)
111 {
112 switch (code) {
113 /* take arg as a value, not as a pointer */
114 case BLKRASET:
115 case BLKFRASET:
116 if (entering(tcp))
117 tprintf(", %ld", arg);
118 break;
119
120 /* take a signed int */
121 case BLKROSET:
122 case BLKBSZSET:
123 #ifdef FIFREEZE
124 /* First seen in linux-2.6.29 */
125 case FIFREEZE:
126 case FITHAW:
127 #endif
128 if (entering(tcp)) {
129 int val;
130 if (umove(tcp, arg, &val) < 0)
131 tprintf(", %#lx", arg);
132 else
133 tprintf(", %d", val);
134 }
135 break;
136
137 /* returns an unsigned short */
138 case BLKSECTGET:
139 if (exiting(tcp)) {
140 unsigned short val;
141 if (syserror(tcp) || umove(tcp, arg, &val) < 0)
142 tprintf(", %#lx", arg);
143 else
144 tprintf(", %u", (unsigned)val);
145 }
146 break;
147
148 /* return a signed int */
149 case BLKROGET:
150 case BLKBSZGET:
151 case BLKSSZGET:
152 case BLKALIGNOFF:
153 if (exiting(tcp)) {
154 int val;
155 if (syserror(tcp) || umove(tcp, arg, &val) < 0)
156 tprintf(", %#lx", arg);
157 else
158 tprintf(", %d", val);
159 }
160 break;
161
162 /* return an unsigned int */
163 case BLKPBSZGET:
164 case BLKIOMIN:
165 case BLKIOOPT:
166 case BLKDISCARDZEROES:
167 if (exiting(tcp)) {
168 unsigned int val;
169 if (syserror(tcp) || umove(tcp, arg, &val) < 0)
170 tprintf(", %#lx", arg);
171 else
172 tprintf(", %u", val);
173 }
174 break;
175
176 /* return a signed long */
177 case BLKRAGET:
178 case BLKFRAGET:
179 if (exiting(tcp)) {
180 long val;
181 if (syserror(tcp) || umove(tcp, arg, &val) < 0)
182 tprintf(", %#lx", arg);
183 else
184 tprintf(", %ld", val);
185 }
186 break;
187
188 /* returns an unsigned long */
189 case BLKGETSIZE:
190 if (exiting(tcp)) {
191 unsigned long val;
192 if (syserror(tcp) || umove(tcp, arg, &val) < 0)
193 tprintf(", %#lx", arg);
194 else
195 tprintf(", %lu", val);
196 }
197 break;
198
199 #ifdef HAVE_BLKGETSIZE64
200 /* return an uint64_t */
201 case BLKGETSIZE64:
202 if (exiting(tcp)) {
203 uint64_t val;
204 if (syserror(tcp) || umove(tcp, arg, &val) < 0)
205 tprintf(", %#lx", arg);
206 else
207 tprintf(", %" PRIu64, val);
208 }
209 break;
210 #endif
211
212 /* More complex types */
213 case BLKDISCARD:
214 case BLKSECDISCARD:
215 if (entering(tcp)) {
216 uint64_t range[2];
217 if (umove(tcp, arg, range) < 0)
218 tprintf(", %#lx", arg);
219 else
220 tprintf(", {%" PRIx64 ", %" PRIx64 "}",
221 range[0], range[1]);
222 }
223 break;
224
225 case HDIO_GETGEO:
226 if (exiting(tcp)) {
227 struct hd_geometry geo;
228 if (syserror(tcp) || umove(tcp, arg, &geo) < 0)
229 tprintf(", %#lx", arg);
230 else
231 tprintf(", {heads=%u, sectors=%u, "
232 "cylinders=%u, start=%lu}",
233 (unsigned)geo.heads,
234 (unsigned)geo.sectors,
235 (unsigned)geo.cylinders,
236 geo.start);
237 }
238 break;
239
240 case BLKPG:
241 if (entering(tcp)) {
242 struct blkpg_ioctl_arg blkpg;
243 if (umove(tcp, arg, &blkpg) < 0)
244 tprintf(", %#lx", arg);
245 else {
246 tprints(", ");
247 print_blkpg_req(tcp, &blkpg);
248 }
249 }
250 break;
251
252 case BLKTRACESETUP:
253 if (entering(tcp)) {
254 struct blk_user_trace_setup buts;
255 if (umove(tcp, arg, &buts) < 0)
256 tprintf(", %#lx", arg);
257 else
258 tprintf(", {act_mask=%u, buf_size=%u, "
259 "buf_nr=%u, start_lba=%" PRIu64 ", "
260 "end_lba=%" PRIu64 ", pid=%u}",
261 (unsigned)buts.act_mask, buts.buf_size,
262 buts.buf_nr, buts.start_lba,
263 buts.end_lba, buts.pid);
264 }
265 if (exiting(tcp)) {
266 struct blk_user_trace_setup buts;
267 if (syserror(tcp) || umove(tcp, arg, &buts) < 0)
268 tprintf(", %#lx", arg);
269 else {
270 tprints(", {name=");
271 print_quoted_string(buts.name, sizeof(buts.name),
272 QUOTE_0_TERMINATED);
273 tprints("}");
274 }
275 }
276 break;
277
278 #ifdef FITRIM
279 /* First seen in linux-2.6.37 */
280 case FITRIM:
281 if (entering(tcp)) {
282 struct fstrim_range fstrim;
283 if (umove(tcp, arg, &fstrim))
284 tprintf(", %#lx", arg);
285 else
286 tprintf(", {start=%#" PRIx64 ", len=%#" PRIx64 ", "
287 "minlen=%#" PRIx64 "}", (uint64_t) fstrim.start,
288 (uint64_t) fstrim.len, (uint64_t) fstrim.minlen);
289 }
290 break;
291 #endif
292
293 /* No arguments or unhandled */
294 case BLKTRACESTART:
295 case BLKTRACESTOP:
296 case BLKTRACETEARDOWN:
297 case BLKFLSBUF: /* Requires driver knowlege */
298 case BLKRRPART: /* No args */
299 default:
300 if (entering(tcp))
301 tprintf(", %#lx", arg);
302 break;
303
304 };
305 return 1;
306 }
307