1 /* 2 * Copyright (c) 2003-2007 Ulrich Drepper <drepper (at) redhat.com> 3 * Copyright (c) 2005-2016 Dmitry V. Levin <ldv (at) altlinux.org> 4 * Copyright (c) 2016-2017 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 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 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 umoven_or_printaddr, print_node, 0); 63 } 64 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 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 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" 102 103 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 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 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 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 } 160 161 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 umoven_or_printaddr, print_addr, 0); 170 tprints(", "); 171 print_array(tcp, tcp->u_arg[3], npages, &buf, sizeof(int), 172 umoven_or_printaddr, print_int, 0); 173 tprints(", "); 174 } else { 175 print_array(tcp, tcp->u_arg[4], npages, &buf, sizeof(int), 176 umoven_or_printaddr, print_status, 0); 177 tprints(", "); 178 printflags(move_pages_flags, tcp->u_arg[5], "MPOL_???"); 179 } 180 return 0; 181 } 182
