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 if (entering(tcp)) {
50 tprintf("%#lx", tcp->u_arg[0]);
51 }
52 return RVAL_HEX;
53 }
54
55 #include "xlat/mmap_prot.h"
56 #include "xlat/mmap_flags.h"
57
58 static int
print_mmap(struct tcb * tcp,long * u_arg,unsigned long long offset)59 print_mmap(struct tcb *tcp, long *u_arg, unsigned long long offset)
60 {
61 if (entering(tcp)) {
62 /* addr */
63 if (!u_arg[0])
64 tprints("NULL, ");
65 else
66 tprintf("%#lx, ", u_arg[0]);
67 /* len */
68 tprintf("%lu, ", u_arg[1]);
69 /* prot */
70 printflags(mmap_prot, u_arg[2], "PROT_???");
71 tprints(", ");
72 /* flags */
73 #ifdef MAP_TYPE
74 printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
75 addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
76 #else
77 printflags(mmap_flags, u_arg[3], "MAP_???");
78 #endif
79 tprints(", ");
80 /* fd */
81 printfd(tcp, u_arg[4]);
82 /* offset */
83 tprintf(", %#llx", offset);
84 }
85 return RVAL_HEX;
86 }
87
88 /* Syscall name<->function correspondence is messed up on many arches.
89 * For example:
90 * i386 has __NR_mmap == 90, and it is "old mmap", and
91 * also it has __NR_mmap2 == 192, which is a "new mmap with page offsets".
92 * But x86_64 has just one __NR_mmap == 9, a "new mmap with byte offsets".
93 * Confused? Me too!
94 */
95
96 /* Params are pointed to by u_arg[0], offset is in bytes */
SYS_FUNC(old_mmap)97 SYS_FUNC(old_mmap)
98 {
99 long u_arg[6];
100 #if defined(IA64)
101 /*
102 * IA64 processes never call this routine, they only use the
103 * new 'sys_mmap' interface. Only IA32 processes come here.
104 */
105 int i;
106 unsigned narrow_arg[6];
107 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), narrow_arg) == -1)
108 return 0;
109 for (i = 0; i < 6; i++)
110 u_arg[i] = (unsigned long) narrow_arg[i];
111 #elif defined(X86_64)
112 /* We are here only in personality 1 (i386) */
113 int i;
114 unsigned narrow_arg[6];
115 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), narrow_arg) == -1)
116 return 0;
117 for (i = 0; i < 6; ++i)
118 u_arg[i] = (unsigned long) narrow_arg[i];
119 #else
120 if (umoven(tcp, tcp->u_arg[0], sizeof(u_arg), u_arg) == -1)
121 return 0;
122 #endif
123 return print_mmap(tcp, u_arg, (unsigned long) u_arg[5]);
124 }
125
126 #if defined(S390)
127 /* Params are pointed to by u_arg[0], offset is in pages */
SYS_FUNC(old_mmap_pgoff)128 SYS_FUNC(old_mmap_pgoff)
129 {
130 long u_arg[5];
131 int i;
132 unsigned narrow_arg[6];
133 unsigned long long offset;
134 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), narrow_arg) == -1)
135 return 0;
136 for (i = 0; i < 5; i++)
137 u_arg[i] = (unsigned long) narrow_arg[i];
138 offset = narrow_arg[5];
139 offset *= get_pagesize();
140 return print_mmap(tcp, u_arg, offset);
141 }
142 #endif
143
144 /* Params are passed directly, offset is in bytes */
SYS_FUNC(mmap)145 SYS_FUNC(mmap)
146 {
147 unsigned long long offset = (unsigned long) tcp->u_arg[5];
148 #if defined(LINUX_MIPSN32) || defined(X32)
149 /* Try test/x32_mmap.c */
150 offset = tcp->ext_arg[5];
151 #endif
152 /* Example of kernel-side handling of this variety of mmap:
153 * arch/x86/kernel/sys_x86_64.c::SYSCALL_DEFINE6(mmap, ...) calls
154 * sys_mmap_pgoff(..., off >> PAGE_SHIFT); i.e. off is in bytes,
155 * since the above code converts off to pages.
156 */
157 return print_mmap(tcp, tcp->u_arg, offset);
158 }
159
160 /* Params are passed directly, offset is in pages */
SYS_FUNC(mmap_pgoff)161 SYS_FUNC(mmap_pgoff)
162 {
163 /* Try test/mmap_offset_decode.c */
164 unsigned long long offset;
165 offset = (unsigned long) tcp->u_arg[5];
166 offset *= get_pagesize();
167 return print_mmap(tcp, tcp->u_arg, offset);
168 }
169
170 /* Params are passed directly, offset is in 4k units */
SYS_FUNC(mmap_4koff)171 SYS_FUNC(mmap_4koff)
172 {
173 unsigned long long offset;
174 offset = (unsigned long) tcp->u_arg[5];
175 offset <<= 12;
176 return print_mmap(tcp, tcp->u_arg, offset);
177 }
178
SYS_FUNC(munmap)179 SYS_FUNC(munmap)
180 {
181 if (entering(tcp)) {
182 tprintf("%#lx, %lu",
183 tcp->u_arg[0], tcp->u_arg[1]);
184 }
185 return 0;
186 }
187
SYS_FUNC(mprotect)188 SYS_FUNC(mprotect)
189 {
190 if (entering(tcp)) {
191 tprintf("%#lx, %lu, ",
192 tcp->u_arg[0], tcp->u_arg[1]);
193 printflags(mmap_prot, tcp->u_arg[2], "PROT_???");
194 }
195 return 0;
196 }
197
198 #include "xlat/mremap_flags.h"
199
SYS_FUNC(mremap)200 SYS_FUNC(mremap)
201 {
202 if (entering(tcp)) {
203 tprintf("%#lx, %lu, %lu, ", tcp->u_arg[0], tcp->u_arg[1],
204 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 tprintf(", %#lx", tcp->u_arg[4]);
210 #endif
211 }
212 return RVAL_HEX;
213 }
214
215 #include "xlat/madvise_cmds.h"
216
SYS_FUNC(madvise)217 SYS_FUNC(madvise)
218 {
219 if (entering(tcp)) {
220 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
221 printxval(madvise_cmds, tcp->u_arg[2], "MADV_???");
222 }
223 return 0;
224 }
225
226 #include "xlat/mlockall_flags.h"
227
SYS_FUNC(mlockall)228 SYS_FUNC(mlockall)
229 {
230 if (entering(tcp)) {
231 printflags(mlockall_flags, tcp->u_arg[0], "MCL_???");
232 }
233 return 0;
234 }
235
236 #include "xlat/mctl_sync.h"
237
SYS_FUNC(msync)238 SYS_FUNC(msync)
239 {
240 if (entering(tcp)) {
241 /* addr */
242 tprintf("%#lx", tcp->u_arg[0]);
243 /* len */
244 tprintf(", %lu, ", tcp->u_arg[1]);
245 /* flags */
246 printflags(mctl_sync, tcp->u_arg[2], "MS_???");
247 }
248 return 0;
249 }
250
SYS_FUNC(mincore)251 SYS_FUNC(mincore)
252 {
253 if (entering(tcp)) {
254 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
255 } else {
256 unsigned long i, len;
257 char *vec = NULL;
258
259 len = tcp->u_arg[1];
260 if (syserror(tcp) || tcp->u_arg[2] == 0 ||
261 (vec = malloc(len)) == NULL ||
262 umoven(tcp, tcp->u_arg[2], len, vec) < 0)
263 tprintf("%#lx", tcp->u_arg[2]);
264 else {
265 tprints("[");
266 for (i = 0; i < len; i++) {
267 if (abbrev(tcp) && i >= max_strlen) {
268 tprints("...");
269 break;
270 }
271 tprints((vec[i] & 1) ? "1" : "0");
272 }
273 tprints("]");
274 }
275 free(vec);
276 }
277 return 0;
278 }
279
280 #if defined(ALPHA) || defined(IA64) || defined(SPARC) || defined(SPARC64)
SYS_FUNC(getpagesize)281 SYS_FUNC(getpagesize)
282 {
283 if (exiting(tcp))
284 return RVAL_HEX;
285 return 0;
286 }
287 #endif
288
SYS_FUNC(remap_file_pages)289 SYS_FUNC(remap_file_pages)
290 {
291 if (entering(tcp)) {
292 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
293 printflags(mmap_prot, tcp->u_arg[2], "PROT_???");
294 tprintf(", %lu, ", tcp->u_arg[3]);
295 #ifdef MAP_TYPE
296 printxval(mmap_flags, tcp->u_arg[4] & MAP_TYPE, "MAP_???");
297 addflags(mmap_flags, tcp->u_arg[4] & ~MAP_TYPE);
298 #else
299 printflags(mmap_flags, tcp->u_arg[4], "MAP_???");
300 #endif
301 }
302 return 0;
303 }
304
305 #define MPOL_DEFAULT 0
306 #define MPOL_PREFERRED 1
307 #define MPOL_BIND 2
308 #define MPOL_INTERLEAVE 3
309
310 #define MPOL_F_NODE (1<<0)
311 #define MPOL_F_ADDR (1<<1)
312
313 #define MPOL_MF_STRICT (1<<0)
314 #define MPOL_MF_MOVE (1<<1)
315 #define MPOL_MF_MOVE_ALL (1<<2)
316
317 #include "xlat/policies.h"
318 #include "xlat/mbindflags.h"
319 #include "xlat/mempolicyflags.h"
320 #include "xlat/move_pages_flags.h"
321
322 static void
get_nodes(struct tcb * tcp,unsigned long ptr,unsigned long maxnodes,int err)323 get_nodes(struct tcb *tcp, unsigned long ptr, unsigned long maxnodes, int err)
324 {
325 unsigned long nlongs, size, end;
326
327 nlongs = (maxnodes + 8 * sizeof(long) - 1) / (8 * sizeof(long));
328 size = nlongs * sizeof(long);
329 end = ptr + size;
330 if (nlongs == 0 || ((err || verbose(tcp)) && (size * 8 == maxnodes)
331 && (end > ptr))) {
332 unsigned long n, cur, abbrev_end;
333 int failed = 0;
334
335 if (abbrev(tcp)) {
336 abbrev_end = ptr + max_strlen * sizeof(long);
337 if (abbrev_end < ptr)
338 abbrev_end = end;
339 } else {
340 abbrev_end = end;
341 }
342 tprints(", {");
343 for (cur = ptr; cur < end; cur += sizeof(long)) {
344 if (cur > ptr)
345 tprints(", ");
346 if (cur >= abbrev_end) {
347 tprints("...");
348 break;
349 }
350 if (umoven(tcp, cur, sizeof(n), &n) < 0) {
351 tprints("?");
352 failed = 1;
353 break;
354 }
355 tprintf("%#0*lx", (int) sizeof(long) * 2 + 2, n);
356 }
357 tprints("}");
358 if (failed)
359 tprintf(" %#lx", ptr);
360 } else
361 tprintf(", %#lx", ptr);
362 tprintf(", %lu", maxnodes);
363 }
364
SYS_FUNC(mbind)365 SYS_FUNC(mbind)
366 {
367 if (entering(tcp)) {
368 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
369 printxval(policies, tcp->u_arg[2], "MPOL_???");
370 get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[4], 0);
371 tprints(", ");
372 printflags(mbindflags, tcp->u_arg[5], "MPOL_???");
373 }
374 return 0;
375 }
376
SYS_FUNC(set_mempolicy)377 SYS_FUNC(set_mempolicy)
378 {
379 if (entering(tcp)) {
380 printxval(policies, tcp->u_arg[0], "MPOL_???");
381 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], 0);
382 }
383 return 0;
384 }
385
SYS_FUNC(get_mempolicy)386 SYS_FUNC(get_mempolicy)
387 {
388 if (exiting(tcp)) {
389 int pol;
390 if (tcp->u_arg[0] == 0)
391 tprints("NULL");
392 else if (syserror(tcp) || umove(tcp, tcp->u_arg[0], &pol) < 0)
393 tprintf("%#lx", tcp->u_arg[0]);
394 else
395 printxval(policies, pol, "MPOL_???");
396 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], syserror(tcp));
397 tprintf(", %#lx, ", tcp->u_arg[3]);
398 printflags(mempolicyflags, tcp->u_arg[4], "MPOL_???");
399 }
400 return 0;
401 }
402
SYS_FUNC(migrate_pages)403 SYS_FUNC(migrate_pages)
404 {
405 if (entering(tcp)) {
406 tprintf("%ld, ", (long) (pid_t) tcp->u_arg[0]);
407 get_nodes(tcp, tcp->u_arg[2], tcp->u_arg[1], 0);
408 tprints(", ");
409 get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[1], 0);
410 }
411 return 0;
412 }
413
SYS_FUNC(move_pages)414 SYS_FUNC(move_pages)
415 {
416 if (entering(tcp)) {
417 unsigned long npages = tcp->u_arg[1];
418 tprintf("%ld, %lu, ", tcp->u_arg[0], npages);
419 if (tcp->u_arg[2] == 0)
420 tprints("NULL, ");
421 else {
422 unsigned int i;
423 long puser = tcp->u_arg[2];
424 tprints("{");
425 for (i = 0; i < npages; ++i) {
426 void *p;
427 if (i > 0)
428 tprints(", ");
429 if (umove(tcp, puser, &p) < 0) {
430 tprints("???");
431 break;
432 }
433 tprintf("%p", p);
434 puser += sizeof(void *);
435 }
436 tprints("}, ");
437 }
438 if (tcp->u_arg[3] == 0)
439 tprints("NULL, ");
440 else {
441 unsigned int i;
442 long nodeuser = tcp->u_arg[3];
443 tprints("{");
444 for (i = 0; i < npages; ++i) {
445 int node;
446 if (i > 0)
447 tprints(", ");
448 if (umove(tcp, nodeuser, &node) < 0) {
449 tprints("???");
450 break;
451 }
452 tprintf("%#x", node);
453 nodeuser += sizeof(int);
454 }
455 tprints("}, ");
456 }
457 }
458 if (exiting(tcp)) {
459 unsigned long npages = tcp->u_arg[1];
460 if (tcp->u_arg[4] == 0)
461 tprints("NULL, ");
462 else {
463 unsigned int i;
464 long statususer = tcp->u_arg[4];
465 tprints("{");
466 for (i = 0; i < npages; ++i) {
467 int status;
468 if (i > 0)
469 tprints(", ");
470 if (umove(tcp, statususer, &status) < 0) {
471 tprints("???");
472 break;
473 }
474 tprintf("%#x", status);
475 statususer += sizeof(int);
476 }
477 tprints("}, ");
478 }
479 printflags(move_pages_flags, tcp->u_arg[5], "MPOL_???");
480 }
481 return 0;
482 }
483
484 #if defined(POWERPC)
SYS_FUNC(subpage_prot)485 SYS_FUNC(subpage_prot)
486 {
487 if (entering(tcp)) {
488 unsigned long cur, end, abbrev_end, entries;
489 unsigned int entry;
490
491 tprintf("%#lx, %#lx, ", tcp->u_arg[0], tcp->u_arg[1]);
492 entries = tcp->u_arg[1] >> 16;
493 if (!entries || !tcp->u_arg[2]) {
494 tprints("{}");
495 return 0;
496 }
497 cur = tcp->u_arg[2];
498 end = cur + (sizeof(int) * entries);
499 if (!verbose(tcp) || end < (unsigned long) tcp->u_arg[2]) {
500 tprintf("%#lx", tcp->u_arg[2]);
501 return 0;
502 }
503 if (abbrev(tcp)) {
504 abbrev_end = cur + (sizeof(int) * max_strlen);
505 if (abbrev_end > end)
506 abbrev_end = end;
507 }
508 else
509 abbrev_end = end;
510 tprints("{");
511 for (; cur < end; cur += sizeof(int)) {
512 if (cur > (unsigned long) tcp->u_arg[2])
513 tprints(", ");
514 if (cur >= abbrev_end) {
515 tprints("...");
516 break;
517 }
518 if (umove(tcp, cur, &entry) < 0) {
519 tprintf("??? [%#lx]", cur);
520 break;
521 }
522 else
523 tprintf("%#08x", entry);
524 }
525 tprints("}");
526 }
527
528 return 0;
529 }
530 #endif
531