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 static unsigned long
get_pagesize()38 get_pagesize()
39 {
40 static unsigned long pagesize;
41
42 if (!pagesize)
43 pagesize = sysconf(_SC_PAGESIZE);
44 return pagesize;
45 }
46
47 int
sys_brk(struct tcb * tcp)48 sys_brk(struct tcb *tcp)
49 {
50 if (entering(tcp)) {
51 tprintf("%#lx", tcp->u_arg[0]);
52 }
53 return RVAL_HEX;
54 }
55
56 #include "xlat/mmap_prot.h"
57 #include "xlat/mmap_flags.h"
58
59 static int
print_mmap(struct tcb * tcp,long * u_arg,unsigned long long offset)60 print_mmap(struct tcb *tcp, long *u_arg, unsigned long long offset)
61 {
62 if (entering(tcp)) {
63 /* addr */
64 if (!u_arg[0])
65 tprints("NULL, ");
66 else
67 tprintf("%#lx, ", u_arg[0]);
68 /* len */
69 tprintf("%lu, ", u_arg[1]);
70 /* prot */
71 printflags(mmap_prot, u_arg[2], "PROT_???");
72 tprints(", ");
73 /* flags */
74 #ifdef MAP_TYPE
75 printxval(mmap_flags, u_arg[3] & MAP_TYPE, "MAP_???");
76 addflags(mmap_flags, u_arg[3] & ~MAP_TYPE);
77 #else
78 printflags(mmap_flags, u_arg[3], "MAP_???");
79 #endif
80 tprints(", ");
81 /* fd */
82 printfd(tcp, u_arg[4]);
83 /* offset */
84 tprintf(", %#llx", offset);
85 }
86 return RVAL_HEX;
87 }
88
89 /* Syscall name<->function correspondence is messed up on many arches.
90 * For example:
91 * i386 has __NR_mmap == 90, and it is "old mmap", and
92 * also it has __NR_mmap2 == 192, which is a "new mmap with page offsets".
93 * But x86_64 has just one __NR_mmap == 9, a "new mmap with byte offsets".
94 * Confused? Me too!
95 */
96
97 /* Params are pointed to by u_arg[0], offset is in bytes */
98 int
sys_old_mmap(struct tcb * tcp)99 sys_old_mmap(struct tcb *tcp)
100 {
101 long u_arg[6];
102 #if defined(IA64)
103 /*
104 * IA64 processes never call this routine, they only use the
105 * new 'sys_mmap' interface. Only IA32 processes come here.
106 */
107 int i;
108 unsigned narrow_arg[6];
109 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), (char *) narrow_arg) == -1)
110 return 0;
111 for (i = 0; i < 6; i++)
112 u_arg[i] = (unsigned long) narrow_arg[i];
113 #elif defined(X86_64)
114 /* We are here only in personality 1 (i386) */
115 int i;
116 unsigned narrow_arg[6];
117 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), (char *) narrow_arg) == -1)
118 return 0;
119 for (i = 0; i < 6; ++i)
120 u_arg[i] = (unsigned long) narrow_arg[i];
121 #else
122 if (umoven(tcp, tcp->u_arg[0], sizeof(u_arg), (char *) u_arg) == -1)
123 return 0;
124 #endif
125 return print_mmap(tcp, u_arg, (unsigned long) u_arg[5]);
126 }
127
128 #if defined(S390)
129 /* Params are pointed to by u_arg[0], offset is in pages */
130 int
sys_old_mmap_pgoff(struct tcb * tcp)131 sys_old_mmap_pgoff(struct tcb *tcp)
132 {
133 long u_arg[5];
134 int i;
135 unsigned narrow_arg[6];
136 unsigned long long offset;
137 if (umoven(tcp, tcp->u_arg[0], sizeof(narrow_arg), (char *) narrow_arg) == -1)
138 return 0;
139 for (i = 0; i < 5; i++)
140 u_arg[i] = (unsigned long) narrow_arg[i];
141 offset = narrow_arg[5];
142 offset *= get_pagesize();
143 return print_mmap(tcp, u_arg, offset);
144 }
145 #endif
146
147 /* Params are passed directly, offset is in bytes */
148 int
sys_mmap(struct tcb * tcp)149 sys_mmap(struct tcb *tcp)
150 {
151 unsigned long long offset = (unsigned long) tcp->u_arg[5];
152 #if defined(LINUX_MIPSN32) || defined(X32)
153 /* Try test/x32_mmap.c */
154 offset = tcp->ext_arg[5];
155 #endif
156 /* Example of kernel-side handling of this variety of mmap:
157 * arch/x86/kernel/sys_x86_64.c::SYSCALL_DEFINE6(mmap, ...) calls
158 * sys_mmap_pgoff(..., off >> PAGE_SHIFT); i.e. off is in bytes,
159 * since the above code converts off to pages.
160 */
161 return print_mmap(tcp, tcp->u_arg, offset);
162 }
163
164 /* Params are passed directly, offset is in pages */
165 int
sys_mmap_pgoff(struct tcb * tcp)166 sys_mmap_pgoff(struct tcb *tcp)
167 {
168 /* Try test/mmap_offset_decode.c */
169 unsigned long long offset;
170 offset = (unsigned long) tcp->u_arg[5];
171 offset *= get_pagesize();
172 return print_mmap(tcp, tcp->u_arg, offset);
173 }
174
175 /* Params are passed directly, offset is in 4k units */
176 int
sys_mmap_4koff(struct tcb * tcp)177 sys_mmap_4koff(struct tcb *tcp)
178 {
179 unsigned long long offset;
180 offset = (unsigned long) tcp->u_arg[5];
181 offset <<= 12;
182 return print_mmap(tcp, tcp->u_arg, offset);
183 }
184
185 int
sys_munmap(struct tcb * tcp)186 sys_munmap(struct tcb *tcp)
187 {
188 if (entering(tcp)) {
189 tprintf("%#lx, %lu",
190 tcp->u_arg[0], tcp->u_arg[1]);
191 }
192 return 0;
193 }
194
195 int
sys_mprotect(struct tcb * tcp)196 sys_mprotect(struct tcb *tcp)
197 {
198 if (entering(tcp)) {
199 tprintf("%#lx, %lu, ",
200 tcp->u_arg[0], tcp->u_arg[1]);
201 printflags(mmap_prot, tcp->u_arg[2], "PROT_???");
202 }
203 return 0;
204 }
205
206 #include "xlat/mremap_flags.h"
207
208 int
sys_mremap(struct tcb * tcp)209 sys_mremap(struct tcb *tcp)
210 {
211 if (entering(tcp)) {
212 tprintf("%#lx, %lu, %lu, ", tcp->u_arg[0], tcp->u_arg[1],
213 tcp->u_arg[2]);
214 printflags(mremap_flags, tcp->u_arg[3], "MREMAP_???");
215 #ifdef MREMAP_FIXED
216 if ((tcp->u_arg[3] & (MREMAP_MAYMOVE | MREMAP_FIXED)) ==
217 (MREMAP_MAYMOVE | MREMAP_FIXED))
218 tprintf(", %#lx", tcp->u_arg[4]);
219 #endif
220 }
221 return RVAL_HEX;
222 }
223
224 #include "xlat/madvise_cmds.h"
225
226 int
sys_madvise(struct tcb * tcp)227 sys_madvise(struct tcb *tcp)
228 {
229 if (entering(tcp)) {
230 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
231 printxval(madvise_cmds, tcp->u_arg[2], "MADV_???");
232 }
233 return 0;
234 }
235
236 #include "xlat/mlockall_flags.h"
237
238 int
sys_mlockall(struct tcb * tcp)239 sys_mlockall(struct tcb *tcp)
240 {
241 if (entering(tcp)) {
242 printflags(mlockall_flags, tcp->u_arg[0], "MCL_???");
243 }
244 return 0;
245 }
246
247 #ifdef MS_ASYNC
248
249 #include "xlat/mctl_sync.h"
250
251 int
sys_msync(struct tcb * tcp)252 sys_msync(struct tcb *tcp)
253 {
254 if (entering(tcp)) {
255 /* addr */
256 tprintf("%#lx", tcp->u_arg[0]);
257 /* len */
258 tprintf(", %lu, ", tcp->u_arg[1]);
259 /* flags */
260 printflags(mctl_sync, tcp->u_arg[2], "MS_???");
261 }
262 return 0;
263 }
264
265 #endif /* MS_ASYNC */
266
267 #ifdef MC_SYNC
268
269 #include "xlat/mctl_funcs.h"
270 #include "xlat/mctl_lockas.h"
271
272 int
sys_mctl(struct tcb * tcp)273 sys_mctl(struct tcb *tcp)
274 {
275 int arg, function;
276
277 if (entering(tcp)) {
278 /* addr */
279 tprintf("%#lx", tcp->u_arg[0]);
280 /* len */
281 tprintf(", %lu, ", tcp->u_arg[1]);
282 /* function */
283 function = tcp->u_arg[2];
284 printflags(mctl_funcs, function, "MC_???");
285 /* arg */
286 arg = tcp->u_arg[3];
287 tprints(", ");
288 switch (function) {
289 case MC_SYNC:
290 printflags(mctl_sync, arg, "MS_???");
291 break;
292 case MC_LOCKAS:
293 printflags(mctl_lockas, arg, "MCL_???");
294 break;
295 default:
296 tprintf("%#x", arg);
297 break;
298 }
299 }
300 return 0;
301 }
302
303 #endif /* MC_SYNC */
304
305 int
sys_mincore(struct tcb * tcp)306 sys_mincore(struct tcb *tcp)
307 {
308 if (entering(tcp)) {
309 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
310 } else {
311 unsigned long i, len;
312 char *vec = NULL;
313
314 len = tcp->u_arg[1];
315 if (syserror(tcp) || tcp->u_arg[2] == 0 ||
316 (vec = malloc(len)) == NULL ||
317 umoven(tcp, tcp->u_arg[2], len, vec) < 0)
318 tprintf("%#lx", tcp->u_arg[2]);
319 else {
320 tprints("[");
321 for (i = 0; i < len; i++) {
322 if (abbrev(tcp) && i >= max_strlen) {
323 tprints("...");
324 break;
325 }
326 tprints((vec[i] & 1) ? "1" : "0");
327 }
328 tprints("]");
329 }
330 free(vec);
331 }
332 return 0;
333 }
334
335 #if defined(ALPHA) || defined(IA64) || defined(SPARC) || defined(SPARC64)
336 int
sys_getpagesize(struct tcb * tcp)337 sys_getpagesize(struct tcb *tcp)
338 {
339 if (exiting(tcp))
340 return RVAL_HEX;
341 return 0;
342 }
343 #endif
344
345 int
sys_remap_file_pages(struct tcb * tcp)346 sys_remap_file_pages(struct tcb *tcp)
347 {
348 if (entering(tcp)) {
349 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
350 printflags(mmap_prot, tcp->u_arg[2], "PROT_???");
351 tprintf(", %lu, ", tcp->u_arg[3]);
352 #ifdef MAP_TYPE
353 printxval(mmap_flags, tcp->u_arg[4] & MAP_TYPE, "MAP_???");
354 addflags(mmap_flags, tcp->u_arg[4] & ~MAP_TYPE);
355 #else
356 printflags(mmap_flags, tcp->u_arg[4], "MAP_???");
357 #endif
358 }
359 return 0;
360 }
361
362 #define MPOL_DEFAULT 0
363 #define MPOL_PREFERRED 1
364 #define MPOL_BIND 2
365 #define MPOL_INTERLEAVE 3
366
367 #define MPOL_F_NODE (1<<0)
368 #define MPOL_F_ADDR (1<<1)
369
370 #define MPOL_MF_STRICT (1<<0)
371 #define MPOL_MF_MOVE (1<<1)
372 #define MPOL_MF_MOVE_ALL (1<<2)
373
374 #include "xlat/policies.h"
375 #include "xlat/mbindflags.h"
376 #include "xlat/mempolicyflags.h"
377 #include "xlat/move_pages_flags.h"
378
379 static void
get_nodes(struct tcb * tcp,unsigned long ptr,unsigned long maxnodes,int err)380 get_nodes(struct tcb *tcp, unsigned long ptr, unsigned long maxnodes, int err)
381 {
382 unsigned long nlongs, size, end;
383
384 nlongs = (maxnodes + 8 * sizeof(long) - 1) / (8 * sizeof(long));
385 size = nlongs * sizeof(long);
386 end = ptr + size;
387 if (nlongs == 0 || ((err || verbose(tcp)) && (size * 8 == maxnodes)
388 && (end > ptr))) {
389 unsigned long n, cur, abbrev_end;
390 int failed = 0;
391
392 if (abbrev(tcp)) {
393 abbrev_end = ptr + max_strlen * sizeof(long);
394 if (abbrev_end < ptr)
395 abbrev_end = end;
396 } else {
397 abbrev_end = end;
398 }
399 tprints(", {");
400 for (cur = ptr; cur < end; cur += sizeof(long)) {
401 if (cur > ptr)
402 tprints(", ");
403 if (cur >= abbrev_end) {
404 tprints("...");
405 break;
406 }
407 if (umoven(tcp, cur, sizeof(n), (char *) &n) < 0) {
408 tprints("?");
409 failed = 1;
410 break;
411 }
412 tprintf("%#0*lx", (int) sizeof(long) * 2 + 2, n);
413 }
414 tprints("}");
415 if (failed)
416 tprintf(" %#lx", ptr);
417 } else
418 tprintf(", %#lx", ptr);
419 tprintf(", %lu", maxnodes);
420 }
421
422 int
sys_mbind(struct tcb * tcp)423 sys_mbind(struct tcb *tcp)
424 {
425 if (entering(tcp)) {
426 tprintf("%#lx, %lu, ", tcp->u_arg[0], tcp->u_arg[1]);
427 printxval(policies, tcp->u_arg[2], "MPOL_???");
428 get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[4], 0);
429 tprints(", ");
430 printflags(mbindflags, tcp->u_arg[5], "MPOL_???");
431 }
432 return 0;
433 }
434
435 int
sys_set_mempolicy(struct tcb * tcp)436 sys_set_mempolicy(struct tcb *tcp)
437 {
438 if (entering(tcp)) {
439 printxval(policies, tcp->u_arg[0], "MPOL_???");
440 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], 0);
441 }
442 return 0;
443 }
444
445 int
sys_get_mempolicy(struct tcb * tcp)446 sys_get_mempolicy(struct tcb *tcp)
447 {
448 if (exiting(tcp)) {
449 int pol;
450 if (tcp->u_arg[0] == 0)
451 tprints("NULL");
452 else if (syserror(tcp) || umove(tcp, tcp->u_arg[0], &pol) < 0)
453 tprintf("%#lx", tcp->u_arg[0]);
454 else
455 printxval(policies, pol, "MPOL_???");
456 get_nodes(tcp, tcp->u_arg[1], tcp->u_arg[2], syserror(tcp));
457 tprintf(", %#lx, ", tcp->u_arg[3]);
458 printflags(mempolicyflags, tcp->u_arg[4], "MPOL_???");
459 }
460 return 0;
461 }
462
463 int
sys_migrate_pages(struct tcb * tcp)464 sys_migrate_pages(struct tcb *tcp)
465 {
466 if (entering(tcp)) {
467 tprintf("%ld, ", (long) (pid_t) tcp->u_arg[0]);
468 get_nodes(tcp, tcp->u_arg[2], tcp->u_arg[1], 0);
469 tprints(", ");
470 get_nodes(tcp, tcp->u_arg[3], tcp->u_arg[1], 0);
471 }
472 return 0;
473 }
474
475 int
sys_move_pages(struct tcb * tcp)476 sys_move_pages(struct tcb *tcp)
477 {
478 if (entering(tcp)) {
479 unsigned long npages = tcp->u_arg[1];
480 tprintf("%ld, %lu, ", tcp->u_arg[0], npages);
481 if (tcp->u_arg[2] == 0)
482 tprints("NULL, ");
483 else {
484 int i;
485 long puser = tcp->u_arg[2];
486 tprints("{");
487 for (i = 0; i < npages; ++i) {
488 void *p;
489 if (i > 0)
490 tprints(", ");
491 if (umove(tcp, puser, &p) < 0) {
492 tprints("???");
493 break;
494 }
495 tprintf("%p", p);
496 puser += sizeof(void *);
497 }
498 tprints("}, ");
499 }
500 if (tcp->u_arg[3] == 0)
501 tprints("NULL, ");
502 else {
503 int i;
504 long nodeuser = tcp->u_arg[3];
505 tprints("{");
506 for (i = 0; i < npages; ++i) {
507 int node;
508 if (i > 0)
509 tprints(", ");
510 if (umove(tcp, nodeuser, &node) < 0) {
511 tprints("???");
512 break;
513 }
514 tprintf("%#x", node);
515 nodeuser += sizeof(int);
516 }
517 tprints("}, ");
518 }
519 }
520 if (exiting(tcp)) {
521 unsigned long npages = tcp->u_arg[1];
522 if (tcp->u_arg[4] == 0)
523 tprints("NULL, ");
524 else {
525 int i;
526 long statususer = tcp->u_arg[4];
527 tprints("{");
528 for (i = 0; i < npages; ++i) {
529 int status;
530 if (i > 0)
531 tprints(", ");
532 if (umove(tcp, statususer, &status) < 0) {
533 tprints("???");
534 break;
535 }
536 tprintf("%#x", status);
537 statususer += sizeof(int);
538 }
539 tprints("}, ");
540 }
541 printflags(move_pages_flags, tcp->u_arg[5], "MPOL_???");
542 }
543 return 0;
544 }
545
546 #if defined(POWERPC)
547 int
sys_subpage_prot(struct tcb * tcp)548 sys_subpage_prot(struct tcb *tcp)
549 {
550 if (entering(tcp)) {
551 unsigned long cur, end, abbrev_end, entries;
552 unsigned int entry;
553
554 tprintf("%#lx, %#lx, ", tcp->u_arg[0], tcp->u_arg[1]);
555 entries = tcp->u_arg[1] >> 16;
556 if (!entries || !tcp->u_arg[2]) {
557 tprints("{}");
558 return 0;
559 }
560 cur = tcp->u_arg[2];
561 end = cur + (sizeof(int) * entries);
562 if (!verbose(tcp) || end < tcp->u_arg[2]) {
563 tprintf("%#lx", tcp->u_arg[2]);
564 return 0;
565 }
566 if (abbrev(tcp)) {
567 abbrev_end = cur + (sizeof(int) * max_strlen);
568 if (abbrev_end > end)
569 abbrev_end = end;
570 }
571 else
572 abbrev_end = end;
573 tprints("{");
574 for (; cur < end; cur += sizeof(int)) {
575 if (cur > tcp->u_arg[2])
576 tprints(", ");
577 if (cur >= abbrev_end) {
578 tprints("...");
579 break;
580 }
581 if (umove(tcp, cur, &entry) < 0) {
582 tprintf("??? [%#lx]", cur);
583 break;
584 }
585 else
586 tprintf("%#08x", entry);
587 }
588 tprints("}");
589 }
590
591 return 0;
592 }
593 #endif
594