1 /*
2 * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
3 * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
4 * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
5 * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
6 * Copyright (c) 2000 PocketPenguins Inc. Linux for Hitachi SuperH
7 * port by Greg Banks <gbanks@pocketpenguins.com>
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include "defs.h"
34 #include <asm/mman.h>
35 #include <sys/mman.h>
36
37 unsigned long
get_pagesize(void)38 get_pagesize(void)
39 {
40 static unsigned long pagesize;
41
42 if (!pagesize)
43 pagesize = sysconf(_SC_PAGESIZE);
44 return pagesize;
45 }
46
SYS_FUNC(brk)47 SYS_FUNC(brk)
48 {
49 printaddr(tcp->u_arg[0]);
50
51 return RVAL_DECODED | RVAL_HEX;
52 }
53
54 #include "xlat/mmap_prot.h"
55 #include "xlat/mmap_flags.h"
56
57 static void
print_mmap(struct tcb * tcp,long * u_arg,unsigned long long offset)58 print_mmap(struct tcb *tcp, long *u_arg, unsigned long long offset)
59 {
60 /* addr */
61 printaddr(u_arg[0]);
62 /* len */
63 tprintf(", %lu, ", u_arg[1]);
64 /* prot */
65 printflags(mmap_prot, u_arg[2], "PROT_???");
66 tprints(", ");
67 /* flags */
68 #ifdef MAP_TYPE
69 printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
70 addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
71 #else
72 printflags(mmap_flags, u_arg[3], "MAP_???");
73 #endif
74 tprints(", ");
75 /* fd */
76 printfd(tcp, u_arg[4]);
77 /* offset */
78 tprintf(", %#llx", offset);
79 }
80
81 /* Syscall name<->function correspondence is messed up on many arches.
82 * For example:
83 * i386 has __NR_mmap == 90, and it is "old mmap", and
84 * also it has __NR_mmap2 == 192, which is a "new mmap with page offsets".
85 * But x86_64 has just one __NR_mmap == 9, a "new mmap with byte offsets".
86 * Confused? Me too!
87 */
88
89 /* Params are pointed to by u_arg[0], offset is in bytes */
SYS_FUNC(old_mmap)90 SYS_FUNC(old_mmap)
91 {
92 long u_arg[6];
93 #if defined(IA64)
94 /*
95 * IA64 processes never call this routine, they only use the
96 * new 'sys_mmap' interface. Only IA32 processes come here.
97 */
98 int i;
99 unsigned narrow_arg[6];
100 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), narrow_arg) == -1)
101 return 0;
102 for (i = 0; i < 6; i++)
103 u_arg[i] = (unsigned long) narrow_arg[i];
104 #elif defined(X86_64)
105 /* We are here only in personality 1 (i386) */
106 int i;
107 unsigned narrow_arg[6];
108 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), narrow_arg) == -1)
109 return 0;
110 for (i = 0; i < 6; ++i)
111 u_arg[i] = (unsigned long) narrow_arg[i];
112 #else
113 if (umoven(tcp, tcp->u_arg[0], sizeof(u_arg), u_arg) == -1)
114 return 0;
115 #endif
116 print_mmap(tcp, u_arg, (unsigned long) u_arg[5]);
117
118 return RVAL_DECODED | RVAL_HEX;
119 }
120
121 #if defined(S390)
122 /* Params are pointed to by u_arg[0], offset is in pages */
SYS_FUNC(old_mmap_pgoff)123 SYS_FUNC(old_mmap_pgoff)
124 {
125 long u_arg[5];
126 int i;
127 unsigned narrow_arg[6];
128 unsigned long long offset;
129 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), narrow_arg) == -1)
130 return 0;
131 for (i = 0; i < 5; i++)
132 u_arg[i] = (unsigned long) narrow_arg[i];
133 offset = narrow_arg[5];
134 offset *= get_pagesize();
135 print_mmap(tcp, u_arg, offset);
136
137 return RVAL_DECODED | RVAL_HEX;
138 }
139 #endif
140
141 /* Params are passed directly, offset is in bytes */
SYS_FUNC(mmap)142 SYS_FUNC(mmap)
143 {
144 unsigned long long offset = (unsigned long) tcp->u_arg[5];
145 #if defined(LINUX_MIPSN32) || defined(X32)
146 /* Try test/x32_mmap.c */
147 offset = tcp->ext_arg[5];
148 #endif
149 /* Example of kernel-side handling of this variety of mmap:
150 * arch/x86/kernel/sys_x86_64.c::SYSCALL_DEFINE6(mmap, ...) calls
151 * sys_mmap_pgoff(..., off >> PAGE_SHIFT); i.e. off is in bytes,
152 * since the above code converts off to pages.
153 */
154 print_mmap(tcp, tcp->u_arg, offset);
155
156 return RVAL_DECODED | RVAL_HEX;
157 }
158
159 /* Params are passed directly, offset is in pages */
SYS_FUNC(mmap_pgoff)160 SYS_FUNC(mmap_pgoff)
161 {
162 /* Try test/mmap_offset_decode.c */
163 unsigned long long offset;
164 offset = (unsigned long) tcp->u_arg[5];
165 offset *= get_pagesize();
166 print_mmap(tcp, tcp->u_arg, offset);
167
168 return RVAL_DECODED | RVAL_HEX;
169 }
170
171 /* Params are passed directly, offset is in 4k units */
SYS_FUNC(mmap_4koff)172 SYS_FUNC(mmap_4koff)
173 {
174 unsigned long long offset;
175 offset = (unsigned long) tcp->u_arg[5];
176 offset <<= 12;
177 print_mmap(tcp, tcp->u_arg, offset);
178
179 return RVAL_DECODED | RVAL_HEX;
180 }
181
SYS_FUNC(munmap)182 SYS_FUNC(munmap)
183 {
184 printaddr(tcp->u_arg[0]);
185 tprintf(", %lu", tcp->u_arg[1]);
186
187 return RVAL_DECODED;
188 }
189
SYS_FUNC(mprotect)190 SYS_FUNC(mprotect)
191 {
192 printaddr(tcp->u_arg[0]);
193 tprintf(", %lu, ", tcp->u_arg[1]);
194 printflags(mmap_prot, tcp->u_arg[2], "PROT_???");
195
196 return RVAL_DECODED;
197 }
198
199 #include "xlat/mremap_flags.h"
200
SYS_FUNC(mremap)201 SYS_FUNC(mremap)
202 {
203 printaddr(tcp->u_arg[0]);
204 tprintf(", %lu, %lu, ", tcp->u_arg[1], tcp->u_arg[2]);
205 printflags(mremap_flags, tcp->u_arg[3], "MREMAP_???");
206 #ifdef MREMAP_FIXED
207 if ((tcp->u_arg[3] & (MREMAP_MAYMOVE | MREMAP_FIXED)) ==
208 (MREMAP_MAYMOVE | MREMAP_FIXED)) {
209 tprints(", ");
210 printaddr(tcp->u_arg[4]);
211 }
212 #endif
213 return RVAL_DECODED | RVAL_HEX;
214 }
215
216 #include "xlat/madvise_cmds.h"
217
SYS_FUNC(madvise)218 SYS_FUNC(madvise)
219 {
220 printaddr(tcp->u_arg[0]);
221 tprintf(", %lu, ", tcp->u_arg[1]);
222 printxval(madvise_cmds, tcp->u_arg[2], "MADV_???");
223
224 return RVAL_DECODED;
225 }
226
227 #include "xlat/mlockall_flags.h"
228
SYS_FUNC(mlockall)229 SYS_FUNC(mlockall)
230 {
231 printflags(mlockall_flags, tcp->u_arg[0], "MCL_???");
232
233 return RVAL_DECODED;
234 }
235
236 #include "xlat/mctl_sync.h"
237
SYS_FUNC(msync)238 SYS_FUNC(msync)
239 {
240 /* addr */
241 printaddr(tcp->u_arg[0]);
242 /* len */
243 tprintf(", %lu, ", tcp->u_arg[1]);
244 /* flags */
245 printflags(mctl_sync, tcp->u_arg[2], "MS_???");
246
247 return RVAL_DECODED;
248 }
249
250 #include "xlat/mlock_flags.h"
251
SYS_FUNC(mlock2)252 SYS_FUNC(mlock2)
253 {
254 printaddr(tcp->u_arg[0]);
255 tprintf(", %lu, ", tcp->u_arg[1]);
256 printflags(mlock_flags, tcp->u_arg[2], "MLOCK_???");
257
258 return RVAL_DECODED;
259 }
260
SYS_FUNC(mincore)261 SYS_FUNC(mincore)
262 {
263 if (entering(tcp)) {
264 printaddr(tcp->u_arg[0]);
265 tprintf(", %lu, ", tcp->u_arg[1]);
266 } else {
267 unsigned long i, len;
268 char *vec = NULL;
269
270 len = tcp->u_arg[1];
271 if (syserror(tcp) || !verbose(tcp) ||
272 !tcp->u_arg[2] || !(vec = malloc(len)) ||
273 umoven(tcp, tcp->u_arg[2], len, vec) < 0)
274 printaddr(tcp->u_arg[2]);
275 else {
276 tprints("[");
277 for (i = 0; i < len; i++) {
278 if (abbrev(tcp) && i >= max_strlen) {
279 tprints("...");
280 break;
281 }
282 tprints((vec[i] & 1) ? "1" : "0");
283 }
284 tprints("]");
285 }
286 free(vec);
287 }
288 return 0;
289 }
290
291 #if defined ALPHA || defined IA64 || defined M68K \
292 || defined SPARC || defined SPARC64
SYS_FUNC(getpagesize)293 SYS_FUNC(getpagesize)
294 {
295 if (exiting(tcp))
296 return RVAL_HEX;
297 return 0;
298 }
299 #endif
300
SYS_FUNC(remap_file_pages)301 SYS_FUNC(remap_file_pages)
302 {
303 printaddr(tcp->u_arg[0]);
304 tprintf(", %lu, ", tcp->u_arg[1]);
305 printflags(mmap_prot, tcp->u_arg[2], "PROT_???");
306 tprintf(", %lu, ", tcp->u_arg[3]);
307 #ifdef MAP_TYPE
308 printxval(mmap_flags, tcp->u_arg[4] & MAP_TYPE, "MAP_???");
309 addflags(mmap_flags, tcp->u_arg[4] & ~MAP_TYPE);
310 #else
311 printflags(mmap_flags, tcp->u_arg[4], "MAP_???");
312 #endif
313
314 return RVAL_DECODED;
315 }
316
317 #define MPOL_DEFAULT 0
318 #define MPOL_PREFERRED 1
319 #define MPOL_BIND 2
320 #define MPOL_INTERLEAVE 3
321
322 #define MPOL_F_NODE (1<<0)
323 #define MPOL_F_ADDR (1<<1)
324
325 #define MPOL_MF_STRICT (1<<0)
326 #define MPOL_MF_MOVE (1<<1)
327 #define MPOL_MF_MOVE_ALL (1<<2)
328
329 #include "xlat/policies.h"
330 #include "xlat/mbindflags.h"
331 #include "xlat/mempolicyflags.h"
332 #include "xlat/move_pages_flags.h"
333
334 static void
get_nodes(struct tcb * tcp,unsigned long ptr,unsigned long maxnodes,int err)335 get_nodes(struct tcb *tcp, unsigned long ptr, unsigned long maxnodes, int err)
336 {
337 unsigned long nlongs, size, end;
338
339 nlongs = (maxnodes + 8 * sizeof(long) - 1) / (8 * sizeof(long));
340 size = nlongs * sizeof(long);
341 end = ptr + size;
342 if (nlongs == 0 || ((err || verbose(tcp)) && (size * 8 == maxnodes)
343 && (end > ptr))) {
344 unsigned long n, cur, abbrev_end;
345 int failed = 0;
346
347 if (abbrev(tcp)) {
348 abbrev_end = ptr + max_strlen * sizeof(long);
349 if (abbrev_end < ptr)
350 abbrev_end = end;
351 } else {
352 abbrev_end = end;
353 }
354 tprints(", {");
355 for (cur = ptr; cur < end; cur += sizeof(long)) {
356 if (cur > ptr)
357 tprints(", ");
358 if (cur >= abbrev_end) {
359 tprints("...");
360 break;
361 }
362 if (umoven(tcp, cur, sizeof(n), &n) < 0) {
363 tprints("?");
364 failed = 1;
365 break;
366 }
367 tprintf("%#0*lx", (int) sizeof(long) * 2 + 2, n);
368 }
369 tprints("}");
370 if (failed) {
371 tprints(" ");
372 printaddr(ptr);
373 }
374 } else {
375 tprints(" ");
376 printaddr(ptr);
377 }
378 tprintf(", %lu", maxnodes);
379 }
380
SYS_FUNC(mbind)381 SYS_FUNC(mbind)
382 {
383 printaddr(tcp->u_arg[0]);
384 tprintf(", %lu, ", tcp->u_arg[1]);
385 printxval(policies, tcp->u_arg[2], "MPOL_???");
386 get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[4], 0);
387 tprints(", ");
388 printflags(mbindflags, tcp->u_arg[5], "MPOL_???");
389
390 return RVAL_DECODED;
391 }
392
SYS_FUNC(set_mempolicy)393 SYS_FUNC(set_mempolicy)
394 {
395 printxval(policies, tcp->u_arg[0], "MPOL_???");
396 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], 0);
397
398 return RVAL_DECODED;
399 }
400
SYS_FUNC(get_mempolicy)401 SYS_FUNC(get_mempolicy)
402 {
403 if (exiting(tcp)) {
404 int pol;
405 if (!umove_or_printaddr(tcp, tcp->u_arg[0], &pol))
406 printxval(policies, pol, "MPOL_???");
407 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], syserror(tcp));
408 tprints(", ");
409 printaddr(tcp->u_arg[3]);
410 tprints(", ");
411 printflags(mempolicyflags, tcp->u_arg[4], "MPOL_???");
412 }
413 return 0;
414 }
415
SYS_FUNC(migrate_pages)416 SYS_FUNC(migrate_pages)
417 {
418 tprintf("%ld, ", (long) (pid_t) tcp->u_arg[0]);
419 get_nodes(tcp, tcp->u_arg[2], tcp->u_arg[1], 0);
420 tprints(", ");
421 get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[1], 0);
422
423 return RVAL_DECODED;
424 }
425
SYS_FUNC(move_pages)426 SYS_FUNC(move_pages)
427 {
428 if (entering(tcp)) {
429 unsigned long npages = tcp->u_arg[1];
430 tprintf("%ld, %lu, ", tcp->u_arg[0], npages);
431 if (tcp->u_arg[2] == 0)
432 tprints("NULL, ");
433 else {
434 unsigned int i;
435 long puser = tcp->u_arg[2];
436 tprints("{");
437 for (i = 0; i < npages; ++i) {
438 void *p;
439 if (i > 0)
440 tprints(", ");
441 if (umove(tcp, puser, &p) < 0) {
442 tprints("???");
443 break;
444 }
445 tprintf("%p", p);
446 puser += sizeof(void *);
447 }
448 tprints("}, ");
449 }
450 if (tcp->u_arg[3] == 0)
451 tprints("NULL, ");
452 else {
453 unsigned int i;
454 long nodeuser = tcp->u_arg[3];
455 tprints("{");
456 for (i = 0; i < npages; ++i) {
457 int node;
458 if (i > 0)
459 tprints(", ");
460 if (umove(tcp, nodeuser, &node) < 0) {
461 tprints("???");
462 break;
463 }
464 tprintf("%#x", node);
465 nodeuser += sizeof(int);
466 }
467 tprints("}, ");
468 }
469 } else {
470 unsigned long npages = tcp->u_arg[1];
471 if (tcp->u_arg[4] == 0)
472 tprints("NULL, ");
473 else {
474 unsigned int i;
475 long statususer = tcp->u_arg[4];
476 tprints("{");
477 for (i = 0; i < npages; ++i) {
478 int status;
479 if (i > 0)
480 tprints(", ");
481 if (umove(tcp, statususer, &status) < 0) {
482 tprints("???");
483 break;
484 }
485 tprintf("%#x", status);
486 statususer += sizeof(int);
487 }
488 tprints("}, ");
489 }
490 printflags(move_pages_flags, tcp->u_arg[5], "MPOL_???");
491 }
492 return 0;
493 }
494
495 #if defined(POWERPC)
SYS_FUNC(subpage_prot)496 SYS_FUNC(subpage_prot)
497 {
498 unsigned long cur, end, abbrev_end, entries;
499 unsigned int entry;
500
501 printaddr(tcp->u_arg[0]);
502 tprints(", ");
503 printaddr(tcp->u_arg[1]);
504 tprints(", ");
505 entries = tcp->u_arg[1] >> 16;
506 if (!entries || !tcp->u_arg[2]) {
507 tprints("{}");
508 return 0;
509 }
510 cur = tcp->u_arg[2];
511 end = cur + (sizeof(int) * entries);
512 if (!verbose(tcp) || end < (unsigned long) tcp->u_arg[2]) {
513 printaddr(tcp->u_arg[2]);
514 return 0;
515 }
516 if (abbrev(tcp)) {
517 abbrev_end = cur + (sizeof(int) * max_strlen);
518 if (abbrev_end > end)
519 abbrev_end = end;
520 }
521 else
522 abbrev_end = end;
523 tprints("{");
524 for (; cur < end; cur += sizeof(int)) {
525 if (cur > (unsigned long) tcp->u_arg[2])
526 tprints(", ");
527 if (cur >= abbrev_end) {
528 tprints("...");
529 break;
530 }
531 if (umove(tcp, cur, &entry) < 0) {
532 tprintf("??? [%#lx]", cur);
533 break;
534 }
535 else
536 tprintf("%#08x", entry);
537 }
538 tprints("}");
539
540 return RVAL_DECODED;
541 }
542 #endif
543