1 /*
2 * Copyright (c) 2003-2007 Ulrich Drepper <drepper@redhat.com>
3 * Copyright (c) 2005-2016 Dmitry V. Levin <ldv@altlinux.org>
4 * Copyright (c) 2016-2018 The strace developers.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "defs.h"
31
32 static bool
print_node(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)33 print_node(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
34 {
35 if (elem_size < sizeof(kernel_ulong_t)) {
36 tprintf("%#0*x", (int) elem_size * 2 + 2,
37 *(unsigned int *) elem_buf);
38 } else {
39 tprintf("%#0*" PRI_klx, (int) elem_size * 2 + 2,
40 *(kernel_ulong_t *) elem_buf);
41 }
42
43 return true;
44 }
45
46 static void
print_nodemask(struct tcb * const tcp,const kernel_ulong_t addr,const kernel_ulong_t maxnodes)47 print_nodemask(struct tcb *const tcp, const kernel_ulong_t addr,
48 const kernel_ulong_t maxnodes)
49 {
50 const unsigned int bits_per_long = 8 * current_wordsize;
51 const kernel_ulong_t nmemb =
52 (maxnodes + bits_per_long - 2) / bits_per_long;
53
54 if (nmemb < maxnodes / bits_per_long ||
55 (maxnodes && !nmemb)) {
56 printaddr(addr);
57 return;
58 }
59
60 kernel_ulong_t buf;
61 print_array(tcp, addr, nmemb, &buf, current_wordsize,
62 tfetch_mem, print_node, 0);
63 }
64
SYS_FUNC(migrate_pages)65 SYS_FUNC(migrate_pages)
66 {
67 tprintf("%d, %" PRI_klu ", ", (int) tcp->u_arg[0], tcp->u_arg[1]);
68 print_nodemask(tcp, tcp->u_arg[2], tcp->u_arg[1]);
69 tprints(", ");
70 print_nodemask(tcp, tcp->u_arg[3], tcp->u_arg[1]);
71
72 return RVAL_DECODED;
73 }
74
75 #include "xlat/policies.h"
76 #include "xlat/mbindflags.h"
77
SYS_FUNC(mbind)78 SYS_FUNC(mbind)
79 {
80 printaddr(tcp->u_arg[0]);
81 tprintf(", %" PRI_klu ", ", tcp->u_arg[1]);
82 printxval64(policies, tcp->u_arg[2], "MPOL_???");
83 tprints(", ");
84 print_nodemask(tcp, tcp->u_arg[3], tcp->u_arg[4]);
85 tprintf(", %" PRI_klu ", ", tcp->u_arg[4]);
86 printflags(mbindflags, tcp->u_arg[5], "MPOL_???");
87
88 return RVAL_DECODED;
89 }
90
SYS_FUNC(set_mempolicy)91 SYS_FUNC(set_mempolicy)
92 {
93 printxval(policies, tcp->u_arg[0], "MPOL_???");
94 tprints(", ");
95 print_nodemask(tcp, tcp->u_arg[1], tcp->u_arg[2]);
96 tprintf(", %" PRI_klu, tcp->u_arg[2]);
97
98 return RVAL_DECODED;
99 }
100
101 #include "xlat/mempolicyflags.h"
102
SYS_FUNC(get_mempolicy)103 SYS_FUNC(get_mempolicy)
104 {
105 if (exiting(tcp)) {
106 int pol;
107 if (!umove_or_printaddr(tcp, tcp->u_arg[0], &pol)) {
108 tprints("[");
109 printxval(policies, pol, "MPOL_???");
110 tprints("]");
111 }
112 tprints(", ");
113 print_nodemask(tcp, tcp->u_arg[1], tcp->u_arg[2]);
114 tprintf(", %" PRI_klu ", ", tcp->u_arg[2]);
115 printaddr(tcp->u_arg[3]);
116 tprints(", ");
117 printflags64(mempolicyflags, tcp->u_arg[4], "MPOL_???");
118 }
119 return 0;
120 }
121
122 #include "xlat/move_pages_flags.h"
123
124 static bool
print_addr(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)125 print_addr(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
126 {
127 kernel_ulong_t addr;
128
129 if (elem_size < sizeof(addr)) {
130 addr = *(unsigned int *) elem_buf;
131 } else {
132 addr = *(kernel_ulong_t *) elem_buf;
133 }
134
135 printaddr(addr);
136
137 return true;
138 }
139
140 static bool
print_status(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)141 print_status(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
142 {
143 const int status = *(int *) elem_buf;
144
145 if (status < 0 && (unsigned) -status < nerrnos)
146 tprintf("-%s", errnoent[-status]);
147 else
148 tprintf("%d", status);
149
150 return true;
151 }
152
153 static bool
print_int(struct tcb * tcp,void * elem_buf,size_t elem_size,void * data)154 print_int(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
155 {
156 tprintf("%d", *(int *) elem_buf);
157
158 return true;
159 }
160
SYS_FUNC(move_pages)161 SYS_FUNC(move_pages)
162 {
163 const kernel_ulong_t npages = tcp->u_arg[1];
164 kernel_ulong_t buf;
165
166 if (entering(tcp)) {
167 tprintf("%d, %" PRI_klu ", ", (int) tcp->u_arg[0], npages);
168 print_array(tcp, tcp->u_arg[2], npages, &buf, current_wordsize,
169 tfetch_mem, print_addr, 0);
170 tprints(", ");
171 print_array(tcp, tcp->u_arg[3], npages, &buf, sizeof(int),
172 tfetch_mem, print_int, 0);
173 tprints(", ");
174 } else {
175 print_array(tcp, tcp->u_arg[4], npages, &buf, sizeof(int),
176 tfetch_mem, print_status, 0);
177 tprints(", ");
178 printflags(move_pages_flags, tcp->u_arg[5], "MPOL_???");
179 }
180 return 0;
181 }
182