1 /*
2 * Copyright (c) 2012 The Chromium OS Authors.
3 * Written by Mike Frysinger <vapier@gentoo.org>.
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
30 #include <sys/ioctl.h>
31
32 #include <linux/loop.h>
33
34 #include "xlat/loop_flags_options.h"
35 #include "xlat/loop_crypt_type_options.h"
36
loop_ioctl(struct tcb * tcp,long code,long arg)37 int loop_ioctl(struct tcb *tcp, long code, long arg)
38 {
39 struct loop_info info;
40 struct loop_info64 info64;
41 char *s = alloca((LO_NAME_SIZE + LO_KEY_SIZE) * 4);
42
43 if (entering(tcp))
44 return 0;
45
46 switch (code) {
47
48 case LOOP_SET_STATUS:
49 case LOOP_GET_STATUS:
50 if (!verbose(tcp) || umove(tcp, arg, &info) < 0)
51 return 0;
52
53 tprintf(", {number=%d", info.lo_number);
54
55 if (!abbrev(tcp)) {
56 tprintf(", device=%#lx, inode=%lu, rdevice=%#lx",
57 (unsigned long) info.lo_device,
58 info.lo_inode,
59 (unsigned long) info.lo_rdevice);
60 }
61
62 tprintf(", offset=%#x", info.lo_offset);
63
64 if (!abbrev(tcp) || info.lo_encrypt_type != LO_CRYPT_NONE) {
65 tprints(", encrypt_type=");
66 printxval(loop_crypt_type_options, info.lo_encrypt_type,
67 "LO_CRYPT_???");
68 tprintf(", encrypt_key_size=%d", info.lo_encrypt_key_size);
69 }
70
71 tprints(", flags=");
72 printflags(loop_flags_options, info.lo_flags, "LO_FLAGS_???");
73
74 string_quote(info.lo_name, s, -1, LO_NAME_SIZE);
75 tprintf(", name=%s", s);
76
77 if (!abbrev(tcp) || info.lo_encrypt_type != LO_CRYPT_NONE) {
78 string_quote((void *) info.lo_encrypt_key, s, 0, LO_KEY_SIZE);
79 tprintf(", encrypt_key=%s", s);
80 }
81
82 if (!abbrev(tcp))
83 tprintf(", init={%#lx, %#lx}"
84 ", reserved={%#x, %#x, %#x, %#x}}",
85 info.lo_init[0], info.lo_init[1],
86 info.reserved[0], info.reserved[1],
87 info.reserved[2], info.reserved[3]);
88 else
89 tprints(", ...}");
90
91 return 1;
92
93 case LOOP_SET_STATUS64:
94 case LOOP_GET_STATUS64:
95 if (!verbose(tcp) || umove(tcp, arg, &info64) < 0)
96 return 0;
97
98 tprints(", {");
99
100 if (!abbrev(tcp)) {
101 tprintf("device=%" PRIu64 ", inode=%" PRIu64 ", "
102 "rdevice=%" PRIu64 ", offset=%#" PRIx64 ", "
103 "sizelimit=%" PRIu64 ", number=%" PRIu32,
104 (uint64_t) info64.lo_device,
105 (uint64_t) info64.lo_inode,
106 (uint64_t) info64.lo_rdevice,
107 (uint64_t) info64.lo_offset,
108 (uint64_t) info64.lo_sizelimit,
109 (uint32_t) info64.lo_number);
110 } else {
111 tprintf("offset=%#" PRIx64 ", number=%" PRIu32,
112 (uint64_t) info64.lo_offset,
113 (uint32_t) info64.lo_number);
114 }
115
116 if (!abbrev(tcp) || info64.lo_encrypt_type != LO_CRYPT_NONE) {
117 tprints(", encrypt_type=");
118 printxval(loop_crypt_type_options, info64.lo_encrypt_type,
119 "LO_CRYPT_???");
120 tprintf(", encrypt_key_size=%" PRIu32,
121 info64.lo_encrypt_key_size);
122 }
123
124 tprints(", flags=");
125 printflags(loop_flags_options, info64.lo_flags, "LO_FLAGS_???");
126
127 string_quote((void *) info64.lo_file_name, s, -1, LO_NAME_SIZE);
128 tprintf(", file_name=%s", s);
129
130 if (!abbrev(tcp) || info64.lo_encrypt_type != LO_CRYPT_NONE) {
131 string_quote((void *) info64.lo_crypt_name, s, -1, LO_NAME_SIZE);
132 tprintf(", crypt_name=%s", s);
133 string_quote((void *) info64.lo_encrypt_key, s, 0, LO_KEY_SIZE);
134 tprintf(", encrypt_key=%s", s);
135 }
136
137 if (!abbrev(tcp))
138 tprintf(", init={%#" PRIx64 ", %#" PRIx64 "}}",
139 (uint64_t) info64.lo_init[0],
140 (uint64_t) info64.lo_init[1]);
141 else
142 tprints(", ...}");
143
144 return 1;
145
146 case LOOP_CLR_FD:
147 #ifdef LOOP_SET_CAPACITY
148 case LOOP_SET_CAPACITY:
149 #endif
150 #ifdef LOOP_CTL_GET_FREE
151 /* newer loop-control stuff */
152 case LOOP_CTL_GET_FREE:
153 #endif
154 /* Takes no arguments */
155 return 1;
156
157 case LOOP_SET_FD:
158 case LOOP_CHANGE_FD:
159 #ifdef LOOP_CTL_ADD
160 /* newer loop-control stuff */
161 case LOOP_CTL_ADD:
162 case LOOP_CTL_REMOVE:
163 #endif
164 /* These take simple args, so let default printer handle it */
165
166 default:
167 return 0;
168 }
169 }
170