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Introduce XLAT macro to ease maintenance of xlat structures
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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 #include <sys/ioctl.h>
31 #include <scsi/sg.h>
32
33 static const struct xlat sg_io_dxfer_direction[] = {
34         {SG_DXFER_NONE,        "SG_DXFER_NONE"},
35         {SG_DXFER_TO_DEV,      "SG_DXFER_TO_DEV"},
36         {SG_DXFER_FROM_DEV,    "SG_DXFER_FROM_DEV"},
37         {SG_DXFER_TO_FROM_DEV, "SG_DXFER_TO_FROM_DEV"},
38         {0, NULL}
39 };
40
41 static void
42 print_sg_io_buffer(struct tcb *tcp, unsigned char *addr, int len)
43 {
44         unsigned char *buf = NULL;
45         int     allocated, i;
46
47         if (len == 0)
48                 return;
49         allocated = (len > max_strlen) ? max_strlen : len;
50         if (len < 0 ||
51             (buf = malloc(allocated)) == NULL ||
52             umoven(tcp, (unsigned long) addr, allocated, (char *) buf) < 0) {
53                 tprintf("%p", addr);
54                 free(buf);
55                 return;
56         }
57         tprintf("%02x", buf[0]);
58         for (i = 1; i < allocated; ++i)
59                 tprintf(", %02x", buf[i]);
60         free(buf);
61         if (allocated != len)
62                 tprints(", ...");
63 }
64
65 static void
66 print_sg_io_req(struct tcb *tcp, struct sg_io_hdr *sg_io)
67 {
68         tprintf("{'%c', ", sg_io->interface_id);
69         printxval(sg_io_dxfer_direction, sg_io->dxfer_direction,
70                   "SG_DXFER_???");
71         tprintf(", cmd[%u]=[", sg_io->cmd_len);
72         print_sg_io_buffer(tcp, sg_io->cmdp, sg_io->cmd_len);
73         tprintf("], mx_sb_len=%d, ", sg_io->mx_sb_len);
74         tprintf("iovec_count=%d, ", sg_io->iovec_count);
75         tprintf("dxfer_len=%u, ", sg_io->dxfer_len);
76         tprintf("timeout=%u, ", sg_io->timeout);
77         tprintf("flags=%#x", sg_io->flags);
78
79         if (sg_io->dxfer_direction == SG_DXFER_TO_DEV ||
80             sg_io->dxfer_direction == SG_DXFER_TO_FROM_DEV) {
81                 tprintf(", data[%u]=[", sg_io->dxfer_len);
82                 printstr(tcp, (unsigned long) sg_io->dxferp,
83                          sg_io->dxfer_len);
84                 tprints("]");
85         }
86 }
87
88 static void
89 print_sg_io_res(struct tcb *tcp, struct sg_io_hdr *sg_io)
90 {
91         if (sg_io->dxfer_direction == SG_DXFER_FROM_DEV ||
92             sg_io->dxfer_direction == SG_DXFER_TO_FROM_DEV) {
93                 tprintf(", data[%u]=[", sg_io->dxfer_len);
94                 printstr(tcp, (unsigned long) sg_io->dxferp,
95                          sg_io->dxfer_len);
96                 tprints("]");
97         }
98         tprintf(", status=%02x, ", sg_io->status);
99         tprintf("masked_status=%02x, ", sg_io->masked_status);
100         tprintf("sb[%u]=[", sg_io->sb_len_wr);
101         print_sg_io_buffer(tcp, sg_io->sbp, sg_io->sb_len_wr);
102         tprintf("], host_status=%#x, ", sg_io->host_status);
103         tprintf("driver_status=%#x, ", sg_io->driver_status);
104         tprintf("resid=%d, ", sg_io->resid);
105         tprintf("duration=%d, ", sg_io->duration);
106         tprintf("info=%#x}", sg_io->info);
107 }
108
109 int
110 scsi_ioctl(struct tcb *tcp, long code, long arg)
111 {
112         switch (code) {
113         case SG_IO:
114                 if (entering(tcp)) {
115                         struct sg_io_hdr sg_io;
116
117                         if (umove(tcp, arg, &sg_io) < 0)
118                                 tprintf(", %#lx", arg);
119                         else {
120                                 tprints(", ");
121                                 print_sg_io_req(tcp, &sg_io);
122                         }
123                 }
124                 if (exiting(tcp)) {
125                         struct sg_io_hdr sg_io;
126
127                         if (!syserror(tcp) && umove(tcp, arg, &sg_io) >= 0)
128                                 print_sg_io_res(tcp, &sg_io);
129                         else
130                                 tprints("}");
131                 }
132                 break;
133         default:
134                 if (entering(tcp))
135                         tprintf(", %#lx", arg);
136                 break;
137         }
138         return 1;
139 }