1 /*
2 * Copyright (c) 2007 Vladimir Nadvornik <nadvornik@suse.cz>
3 * Copyright (c) 2007-2017 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 # include <scsi/sg.h>
33 #endif
34
35 #include "xlat/scsi_sg_commands.h"
36 #include "xlat/sg_scsi_reset.h"
37
38 static int
decode_sg_io(struct tcb * const tcp,const uint32_t iid,const kernel_ulong_t arg)39 decode_sg_io(struct tcb *const tcp, const uint32_t iid,
40 const kernel_ulong_t arg)
41 {
42 switch (iid) {
43 case 'S':
44 return decode_sg_io_v3(tcp, arg);
45 case 'Q':
46 return decode_sg_io_v4(tcp, arg);
47 default:
48 tprintf("[%u]", iid);
49 return RVAL_IOCTL_DECODED;
50 }
51
52 }
53
54 #ifdef HAVE_SCSI_SG_H
55
56 static int
decode_sg_scsi_id(struct tcb * const tcp,const kernel_ulong_t arg)57 decode_sg_scsi_id(struct tcb *const tcp, const kernel_ulong_t arg)
58 {
59 struct sg_scsi_id id;
60
61 if (entering(tcp))
62 return 0;
63
64 tprints(", ");
65 if (!umove_or_printaddr(tcp, arg, &id)) {
66 tprintf("{host_no=%d"
67 ", channel=%d"
68 ", scsi_id=%#x"
69 ", lun=%d"
70 ", scsi_type=%#x"
71 ", h_cmd_per_lun=%hd"
72 ", d_queue_depth=%hd}",
73 id.host_no,
74 id.channel,
75 id.scsi_id,
76 id.lun,
77 id.scsi_type,
78 id.h_cmd_per_lun,
79 id.d_queue_depth);
80 }
81 return RVAL_IOCTL_DECODED;
82 }
83
84 #endif /* HAVE_SCSI_SG_H */
85
86 int
scsi_ioctl(struct tcb * const tcp,const unsigned int code,const kernel_ulong_t arg)87 scsi_ioctl(struct tcb *const tcp, const unsigned int code,
88 const kernel_ulong_t arg)
89 {
90 switch (code) {
91 case SG_IO:
92 if (entering(tcp)) {
93 uint32_t iid;
94
95 tprints(", ");
96 if (umove_or_printaddr(tcp, arg, &iid)) {
97 break;
98 } else {
99 return decode_sg_io(tcp, iid, arg);
100 }
101 } else {
102 uint32_t *piid = get_tcb_priv_data(tcp);
103 if (piid)
104 decode_sg_io(tcp, *piid, arg);
105 tprints("}");
106 break;
107 }
108
109 #ifdef HAVE_SCSI_SG_H
110 /* returns struct sg_scsi_id */
111 case SG_GET_SCSI_ID:
112 return decode_sg_scsi_id(tcp, arg);
113 /* returns struct sg_req_info */
114 case SG_GET_REQUEST_TABLE:
115 return decode_sg_req_info(tcp, arg);
116 #endif /* HAVE_SCSI_SG_H */
117
118 /* takes a value by pointer */
119 case SG_SCSI_RESET: {
120 unsigned int val;
121 tprints(", ");
122 if (!umove_or_printaddr(tcp, arg, &val)) {
123 tprints("[");
124 if (val & SG_SCSI_RESET_NO_ESCALATE) {
125 printxval(sg_scsi_reset,
126 SG_SCSI_RESET_NO_ESCALATE, 0);
127 tprints("|");
128 }
129 printxval(sg_scsi_reset,
130 val & ~SG_SCSI_RESET_NO_ESCALATE,
131 "SG_SCSI_RESET_???");
132 tprints("]");
133
134 }
135 break;
136 }
137
138 /* takes a signed int by pointer */
139 case SG_NEXT_CMD_LEN:
140 case SG_SET_COMMAND_Q:
141 case SG_SET_DEBUG:
142 case SG_SET_FORCE_LOW_DMA:
143 case SG_SET_FORCE_PACK_ID:
144 case SG_SET_KEEP_ORPHAN:
145 case SG_SET_RESERVED_SIZE:
146 case SG_SET_TIMEOUT:
147 tprints(", ");
148 printnum_int(tcp, arg, "%d");
149 break;
150
151 /* returns a signed int by pointer */
152 case SG_EMULATED_HOST:
153 case SG_GET_ACCESS_COUNT:
154 case SG_GET_COMMAND_Q:
155 case SG_GET_KEEP_ORPHAN:
156 case SG_GET_LOW_DMA:
157 case SG_GET_NUM_WAITING:
158 case SG_GET_PACK_ID:
159 case SG_GET_RESERVED_SIZE:
160 case SG_GET_SG_TABLESIZE:
161 case SG_GET_TRANSFORM:
162 case SG_GET_VERSION_NUM:
163 if (entering(tcp))
164 return 0;
165 tprints(", ");
166 printnum_int(tcp, arg, "%d");
167 break;
168
169 /* takes an integer by value */
170 case SG_SET_TRANSFORM:
171 tprintf(", %#x", (unsigned int) arg);
172 break;
173
174 /* no arguments */
175 case SG_GET_TIMEOUT:
176 break;
177
178 default:
179 return RVAL_DECODED;
180 }
181
182 return RVAL_IOCTL_DECODED;
183 }
184