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 #ifndef BLKROTATIONAL
82 # define BLKROTATIONAL _IO(0x12,126)
83 #endif
84 #ifndef BLKZEROOUT
85 # define BLKZEROOUT _IO(0x12,127)
86 #endif
87
88 #include "xlat/blkpg_ops.h"
89
90 static void
print_blkpg_req(struct tcb * tcp,const struct blkpg_ioctl_arg * blkpg)91 print_blkpg_req(struct tcb *tcp, const struct blkpg_ioctl_arg *blkpg)
92 {
93 struct blkpg_partition p;
94
95 tprints("{");
96 printxval(blkpg_ops, blkpg->op, "BLKPG_???");
97
98 tprintf(", flags=%d, datalen=%d, data=",
99 blkpg->flags, blkpg->datalen);
100
101 if (!umove_or_printaddr(tcp, (long) blkpg->data, &p)) {
102 tprintf("{start=%lld, length=%lld, pno=%d, devname=",
103 p.start, p.length, p.pno);
104 print_quoted_string(p.devname, sizeof(p.devname),
105 QUOTE_0_TERMINATED);
106 tprints(", volname=");
107 print_quoted_string(p.volname, sizeof(p.volname),
108 QUOTE_0_TERMINATED);
109 tprints("}");
110 }
111 tprints("}");
112 }
113
114 int
block_ioctl(struct tcb * tcp,const unsigned int code,const long arg)115 block_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
116 {
117 switch (code) {
118 /* take arg as a value, not as a pointer */
119 case BLKRASET:
120 case BLKFRASET:
121 tprintf(", %lu", arg);
122 break;
123
124 /* take a signed int */
125 case BLKROSET:
126 case BLKBSZSET:
127 tprints(", ");
128 printnum_int(tcp, arg, "%d");
129 break;
130
131 /* return an unsigned short */
132 case BLKSECTGET:
133 case BLKROTATIONAL:
134 if (entering(tcp))
135 return 0;
136 tprints(", ");
137 printnum_short(tcp, arg, "%hu");
138 break;
139
140 /* return a signed int */
141 case BLKROGET:
142 case BLKBSZGET:
143 case BLKSSZGET:
144 case BLKALIGNOFF:
145 if (entering(tcp))
146 return 0;
147 tprints(", ");
148 printnum_int(tcp, arg, "%d");
149 break;
150
151 /* return an unsigned int */
152 case BLKPBSZGET:
153 case BLKIOMIN:
154 case BLKIOOPT:
155 case BLKDISCARDZEROES:
156 if (entering(tcp))
157 return 0;
158 tprints(", ");
159 printnum_int(tcp, arg, "%u");
160 break;
161
162 /* return a signed long */
163 case BLKRAGET:
164 case BLKFRAGET:
165 if (entering(tcp))
166 return 0;
167 tprints(", ");
168 printnum_slong(tcp, arg);
169 break;
170
171 /* returns an unsigned long */
172 case BLKGETSIZE:
173 if (entering(tcp))
174 return 0;
175 tprints(", ");
176 printnum_ulong(tcp, arg);
177 break;
178
179 #ifdef HAVE_BLKGETSIZE64
180 /* returns an uint64_t */
181 case BLKGETSIZE64:
182 if (entering(tcp))
183 return 0;
184 tprints(", ");
185 printnum_int64(tcp, arg, "%" PRIu64);
186 break;
187 #endif
188
189 /* takes a pair of uint64_t */
190 case BLKDISCARD:
191 case BLKSECDISCARD:
192 case BLKZEROOUT:
193 tprints(", ");
194 printpair_int64(tcp, arg, "%" PRIx64);
195 break;
196
197 /* More complex types */
198 case HDIO_GETGEO:
199 if (entering(tcp))
200 return 0;
201 else {
202 struct hd_geometry geo;
203
204 tprints(", ");
205 if (!umove_or_printaddr(tcp, arg, &geo))
206 tprintf("{heads=%u, sectors=%u, "
207 "cylinders=%u, start=%lu}",
208 (unsigned)geo.heads,
209 (unsigned)geo.sectors,
210 (unsigned)geo.cylinders,
211 geo.start);
212 }
213 break;
214
215 case BLKPG: {
216 struct blkpg_ioctl_arg blkpg;
217
218 tprints(", ");
219 if (!umove_or_printaddr(tcp, arg, &blkpg))
220 print_blkpg_req(tcp, &blkpg);
221 break;
222 }
223
224 case BLKTRACESETUP:
225 if (entering(tcp)) {
226 struct blk_user_trace_setup buts;
227
228 tprints(", ");
229 if (umove_or_printaddr(tcp, arg, &buts))
230 break;
231 tprintf("{act_mask=%u, buf_size=%u, "
232 "buf_nr=%u, start_lba=%" PRIu64 ", "
233 "end_lba=%" PRIu64 ", pid=%u",
234 (unsigned)buts.act_mask, buts.buf_size,
235 buts.buf_nr, buts.start_lba,
236 buts.end_lba, buts.pid);
237 return 1;
238 } else {
239 struct blk_user_trace_setup buts;
240
241 if (syserror(tcp)) {
242 tprints("}");
243 break;
244 }
245 tprints(", ");
246 if (umove(tcp, arg, &buts) < 0) {
247 tprints("???}");
248 break;
249 }
250 tprints(", name=");
251 print_quoted_string(buts.name, sizeof(buts.name),
252 QUOTE_0_TERMINATED);
253 tprints("}");
254 break;
255 }
256
257 #ifdef FITRIM
258 /* First seen in linux-2.6.37 */
259 case FITRIM: {
260 struct fstrim_range fstrim;
261
262 tprints(", ");
263 if (!umove_or_printaddr(tcp, arg, &fstrim))
264 tprintf("{start=%#" PRIx64 ", "
265 "len=%#" PRIx64 ", "
266 "minlen=%#" PRIx64 "}",
267 (uint64_t) fstrim.start,
268 (uint64_t) fstrim.len,
269 (uint64_t) fstrim.minlen);
270 break;
271 }
272 #endif
273
274 /* No arguments */
275 case BLKRRPART:
276 case BLKFLSBUF:
277 case BLKTRACESTART:
278 case BLKTRACESTOP:
279 case BLKTRACETEARDOWN:
280 #ifdef FIFREEZE
281 case FIFREEZE:
282 case FITHAW:
283 #endif
284 break;
285 default:
286 return RVAL_DECODED;
287 }
288
289 return RVAL_DECODED | 1;
290 }
291