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1 /*
2  * Copyright (c) 2007 Vladimir Nadvornik <nadvornik@suse.cz>
3  * Copyright (c) 2007 Dmitry V. Levin <ldv@altlinux.org>
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28
29 #include "defs.h"
30
31 #ifdef HAVE_SCSI_SG_H
32
33 # include <linux/ioctl.h>
34 # include <scsi/sg.h>
35
36 # include "xlat/sg_io_dxfer_direction.h"
37
38 # ifdef HAVE_LINUX_BSG_H
39 #  include <linux/bsg.h>
40 #  include <sys/uio.h>
41 #  include "xlat/bsg_protocol.h"
42 #  include "xlat/bsg_subprotocol.h"
43 # endif
44
45 static void
46 print_sg_io_buffer(struct tcb *tcp, unsigned long addr, const unsigned int len)
47 {
48         unsigned char *buf = NULL;
49         unsigned int allocated, i;
50
51         tprints("[");
52         if (len == 0)
53                 goto out;
54         allocated = (len > max_strlen) ? max_strlen : len;
55         buf = malloc(allocated);
56         if (!buf || umoven(tcp, addr, allocated, buf) < 0) {
57                 printaddr(addr);
58                 goto out;
59         }
60         tprintf("%02x", buf[0]);
61         for (i = 1; i < allocated; ++i)
62                 tprintf(", %02x", buf[i]);
63         if (allocated != len)
64                 tprints(", ...");
65 out:
66         free(buf);
67         tprints("]");
68 }
69
70 static int
71 print_sg_io_v3_req(struct tcb *tcp, const long arg)
72 {
73         struct sg_io_hdr sg_io;
74
75         if (umove(tcp, arg, &sg_io) < 0) {
76                 tprints("???}");
77                 return RVAL_DECODED | 1;
78         }
79
80         printxval(sg_io_dxfer_direction, sg_io.dxfer_direction,
81                   "SG_DXFER_???");
82         tprintf(", cmd[%u]=", sg_io.cmd_len);
83         print_sg_io_buffer(tcp, (unsigned long) sg_io.cmdp, sg_io.cmd_len);
84         tprintf(", mx_sb_len=%d", sg_io.mx_sb_len);
85         tprintf(", iovec_count=%d", sg_io.iovec_count);
86         tprintf(", dxfer_len=%u", sg_io.dxfer_len);
87         tprintf(", timeout=%u", sg_io.timeout);
88         tprintf(", flags=%#x", sg_io.flags);
89
90         if (sg_io.dxfer_direction == SG_DXFER_TO_DEV ||
91             sg_io.dxfer_direction == SG_DXFER_TO_FROM_DEV) {
92                 tprintf(", data[%u]=", sg_io.dxfer_len);
93                 if (sg_io.iovec_count)
94                         tprint_iov_upto(tcp, sg_io.iovec_count,
95                                         (unsigned long) sg_io.dxferp, 1,
96                                         sg_io.dxfer_len);
97                 else
98                         print_sg_io_buffer(tcp, (unsigned long) sg_io.dxferp,
99                                            sg_io.dxfer_len);
100         }
101         return 1;
102 }
103
104 static void
105 print_sg_io_v3_res(struct tcb *tcp, const long arg)
106 {
107         struct sg_io_hdr sg_io;
108
109         if (umove(tcp, arg, &sg_io) < 0) {
110                 tprints(", ???");
111                 return;
112         }
113
114         if (sg_io.dxfer_direction == SG_DXFER_FROM_DEV ||
115             sg_io.dxfer_direction == SG_DXFER_TO_FROM_DEV) {
116                 uint32_t din_len = sg_io.dxfer_len;
117
118                 if (sg_io.resid > 0)
119                         din_len -= sg_io.resid;
120                 tprintf(", data[%u]=", din_len);
121                 if (sg_io.iovec_count)
122                         tprint_iov_upto(tcp, sg_io.iovec_count,
123                                         (unsigned long) sg_io.dxferp, 1,
124                                         din_len);
125                 else
126                         print_sg_io_buffer(tcp, (unsigned long) sg_io.dxferp,
127                                            din_len);
128         }
129         tprintf(", status=%02x", sg_io.status);
130         tprintf(", masked_status=%02x", sg_io.masked_status);
131         tprintf(", sb[%u]=", sg_io.sb_len_wr);
132         print_sg_io_buffer(tcp, (unsigned long) sg_io.sbp, sg_io.sb_len_wr);
133         tprintf(", host_status=%#x", sg_io.host_status);
134         tprintf(", driver_status=%#x", sg_io.driver_status);
135         tprintf(", resid=%d", sg_io.resid);
136         tprintf(", duration=%d", sg_io.duration);
137         tprintf(", info=%#x", sg_io.info);
138 }
139
140 #ifdef HAVE_LINUX_BSG_H
141
142 static int
143 print_sg_io_v4_req(struct tcb *tcp, const long arg)
144 {
145         struct sg_io_v4 sg_io;
146
147         if (umove(tcp, arg, &sg_io) < 0) {
148                 tprints("???}");
149                 return RVAL_DECODED | 1;
150         }
151
152         printxval(bsg_protocol, sg_io.protocol, "BSG_PROTOCOL_???");
153         tprints(", ");
154         printxval(bsg_subprotocol, sg_io.subprotocol, "BSG_SUB_PROTOCOL_???");
155         tprintf(", request[%u]=", sg_io.request_len);
156         print_sg_io_buffer(tcp, sg_io.request, sg_io.request_len);
157         tprintf(", request_tag=%llu", (unsigned long long) sg_io.request_tag);
158         tprintf(", request_attr=%u", sg_io.request_attr);
159         tprintf(", request_priority=%u", sg_io.request_priority);
160         tprintf(", request_extra=%u", sg_io.request_extra);
161         tprintf(", max_response_len=%u", sg_io.max_response_len);
162
163         tprintf(", dout_iovec_count=%u", sg_io.dout_iovec_count);
164         tprintf(", dout_xfer_len=%u", sg_io.dout_xfer_len);
165         tprintf(", din_iovec_count=%u", sg_io.din_iovec_count);
166         tprintf(", din_xfer_len=%u", sg_io.din_xfer_len);
167         tprintf(", timeout=%u", sg_io.timeout);
168         tprintf(", flags=%u", sg_io.flags);
169         tprintf(", usr_ptr=%llu", (unsigned long long) sg_io.usr_ptr);
170         tprintf(", spare_in=%u", sg_io.spare_in);
171         tprintf(", dout[%u]=", sg_io.dout_xfer_len);
172         if (sg_io.dout_iovec_count)
173                 tprint_iov_upto(tcp, sg_io.dout_iovec_count, sg_io.dout_xferp,
174                                 1, sg_io.dout_xfer_len);
175         else
176                 print_sg_io_buffer(tcp, sg_io.dout_xferp, sg_io.dout_xfer_len);
177         return 1;
178 }
179
180 static void
181 print_sg_io_v4_res(struct tcb *tcp, const long arg)
182 {
183         struct sg_io_v4 sg_io;
184         uint32_t din_len;
185
186         if (umove(tcp, arg, &sg_io) < 0) {
187                 tprints(", ???");
188                 return;
189         }
190
191         tprintf(", response[%u]=", sg_io.response_len);
192         print_sg_io_buffer(tcp, sg_io.response, sg_io.response_len);
193         din_len = sg_io.din_xfer_len;
194         if (sg_io.din_resid > 0)
195                 din_len -= sg_io.din_resid;
196         tprintf(", din[%u]=", din_len);
197         if (sg_io.din_iovec_count)
198                 tprint_iov_upto(tcp, sg_io.din_iovec_count, sg_io.din_xferp,
199                                 1, din_len);
200         else
201                 print_sg_io_buffer(tcp, sg_io.din_xferp, din_len);
202         tprintf(", driver_status=%u", sg_io.driver_status);
203         tprintf(", transport_status=%u", sg_io.transport_status);
204         tprintf(", device_status=%u", sg_io.device_status);
205         tprintf(", retry_delay=%u", sg_io.retry_delay);
206         tprintf(", info=%u", sg_io.info);
207         tprintf(", duration=%u", sg_io.duration);
208         tprintf(", response_len=%u", sg_io.response_len);
209         tprintf(", din_resid=%u", sg_io.din_resid);
210         tprintf(", dout_resid=%u", sg_io.dout_resid);
211         tprintf(", generated_tag=%llu", (unsigned long long) sg_io.generated_tag);
212         tprintf(", spare_out=%u", sg_io.spare_out);
213 }
214
215 #else /* !HAVE_LINUX_BSG_H */
216
217 static int
218 print_sg_io_v4_req(struct tcb *tcp, const long arg)
219 {
220         tprints("...}");
221         return RVAL_DECODED | 1;
222 }
223
224 static void
225 print_sg_io_v4_res(struct tcb *tcp, const long arg)
226 {
227 }
228
229 #endif
230
231 static int
232 print_sg_io_req(struct tcb *tcp, uint32_t iid, const long arg)
233 {
234         tprintf("{'%c', ", iid);
235
236         switch (iid) {
237         case 'S':
238                 return print_sg_io_v3_req(tcp, arg);
239         case 'Q':
240                 return print_sg_io_v4_req(tcp, arg);
241         default:
242                 tprints("...}");
243                 return RVAL_DECODED | 1;
244         }
245
246 }
247
248 static void
249 print_sg_io_res(struct tcb *tcp, uint32_t iid, const long arg)
250 {
251         switch (iid) {
252         case 'S':
253                 print_sg_io_v3_res(tcp, arg);
254                 break;
255         case 'Q':
256                 print_sg_io_v4_res(tcp, arg);
257                 break;
258         }
259 }
260
261 int
262 scsi_ioctl(struct tcb *tcp, const unsigned int code, const long arg)
263 {
264         uint32_t iid;
265
266         if (SG_IO != code)
267                 return RVAL_DECODED;
268
269         if (entering(tcp)) {
270                 tprints(", ");
271                 if (!arg || umove(tcp, arg, &iid) < 0) {
272                         printaddr(arg);
273                         return RVAL_DECODED | 1;
274                 } else {
275                         return print_sg_io_req(tcp, iid, arg);
276                 }
277         } else {
278                 if (!syserror(tcp)) {
279                         if (umove(tcp, arg, &iid) < 0)
280                                 tprints(", ???");
281                         else
282                                 print_sg_io_res(tcp, iid, arg);
283                 }
284                 tprintf("}");
285                 return RVAL_DECODED | 1;
286         }
287 }
288
289 #endif /* HAVE_SCSI_SG_H */