1 /*
2 * Copyright (c) Christos Zoulas 2003.
3 * All Rights Reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice immediately at the beginning of the file, without modification,
10 * this list of conditions, and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27 #include "file.h"
28
29 #ifndef lint
30 FILE_RCSID("@(#)$File: readelf.c,v 1.204 2025/06/27 16:57:44 christos Exp $")
31 #endif
32
33 #ifdef BUILTIN_ELF
34 #include <string.h>
35 #include <ctype.h>
36 #include <stdlib.h>
37 #include <stdarg.h>
38 #ifdef HAVE_UNISTD_H
39 #include <unistd.h>
40 #endif
41
42 #include "readelf.h"
43 #include "magic.h"
44
45 #ifdef ELFCORE
46 file_private int dophn_core(struct magic_set *, int, int, int, off_t, int,
47 size_t, off_t, int *, uint16_t *);
48 #endif
49 file_private int dophn_exec(struct magic_set *, int, int, int, off_t, int,
50 size_t, off_t, int, int *, uint16_t *);
51 file_private int doshn(struct magic_set *, int, int, int, off_t, int, size_t,
52 off_t, int, int, int *, uint16_t *);
53 file_private size_t donote(struct magic_set *, void *, size_t, size_t, int,
54 int, size_t, int *, uint16_t *, int, off_t, int, off_t);
55
56 #define ELF_ALIGN(a) ((((a) + align - 1) / align) * align)
57
58 #define isquote(c) (strchr("'\"`", (c)) != NULL)
59
60 file_private uint16_t getu16(int, uint16_t);
61 file_private uint32_t getu32(int, uint32_t);
62 file_private uint64_t getu64(int, uint64_t);
63
64 #define NBUFSIZE 2024
65 #define SIZE_UNKNOWN CAST(off_t, -1)
66 #define NAMEEQUALS(n, v) \
67 (namesz == sizeof(v) && memcmp(n, v, namesz) == 0)
68
69 __attribute__((__format__(__printf__, 2, 3)))
70 file_private int
elf_printf(struct magic_set * ms,const char * fmt,...)71 elf_printf(struct magic_set *ms, const char *fmt, ...)
72 {
73 va_list ap;
74 int rv;
75
76 if (ms->flags & MAGIC_MIME)
77 return 1;
78
79 va_start(ap, fmt);
80 rv = file_vprintf(ms, fmt, ap);
81 va_end(ap);
82 return rv;
83 }
84 file_private int
toomany(struct magic_set * ms,const char * name,uint16_t num)85 toomany(struct magic_set *ms, const char *name, uint16_t num)
86 {
87 if (elf_printf(ms, ", too many %s (%u)", name, num) == -1)
88 return -1;
89 return 1;
90 }
91
92 file_private uint16_t
getu16(int swap,uint16_t value)93 getu16(int swap, uint16_t value)
94 {
95 union {
96 uint16_t ui;
97 char c[2];
98 } retval, tmpval;
99
100 if (swap) {
101 tmpval.ui = value;
102
103 retval.c[0] = tmpval.c[1];
104 retval.c[1] = tmpval.c[0];
105
106 return retval.ui;
107 } else
108 return value;
109 }
110
111 file_private uint32_t
getu32(int swap,uint32_t value)112 getu32(int swap, uint32_t value)
113 {
114 union {
115 uint32_t ui;
116 char c[4];
117 } retval, tmpval;
118
119 if (swap) {
120 tmpval.ui = value;
121
122 retval.c[0] = tmpval.c[3];
123 retval.c[1] = tmpval.c[2];
124 retval.c[2] = tmpval.c[1];
125 retval.c[3] = tmpval.c[0];
126
127 return retval.ui;
128 } else
129 return value;
130 }
131
132 file_private uint64_t
getu64(int swap,uint64_t value)133 getu64(int swap, uint64_t value)
134 {
135 union {
136 uint64_t ui;
137 char c[8];
138 } retval, tmpval;
139
140 if (swap) {
141 tmpval.ui = value;
142
143 retval.c[0] = tmpval.c[7];
144 retval.c[1] = tmpval.c[6];
145 retval.c[2] = tmpval.c[5];
146 retval.c[3] = tmpval.c[4];
147 retval.c[4] = tmpval.c[3];
148 retval.c[5] = tmpval.c[2];
149 retval.c[6] = tmpval.c[1];
150 retval.c[7] = tmpval.c[0];
151
152 return retval.ui;
153 } else
154 return value;
155 }
156
157 #define elf_getu16(swap, value) getu16(swap, value)
158 #define elf_getu32(swap, value) getu32(swap, value)
159 #define elf_getu64(swap, value) getu64(swap, value)
160
161 #define xsh_addr (clazz == ELFCLASS32 \
162 ? CAST(void *, &sh32) \
163 : CAST(void *, &sh64))
164 #define xsh_sizeof (clazz == ELFCLASS32 \
165 ? sizeof(sh32) \
166 : sizeof(sh64))
167 #define xsh_size CAST(size_t, (clazz == ELFCLASS32 \
168 ? elf_getu32(swap, sh32.sh_size) \
169 : elf_getu64(swap, sh64.sh_size)))
170 #define xsh_offset CAST(off_t, (clazz == ELFCLASS32 \
171 ? elf_getu32(swap, sh32.sh_offset) \
172 : elf_getu64(swap, sh64.sh_offset)))
173 #define xsh_type (clazz == ELFCLASS32 \
174 ? elf_getu32(swap, sh32.sh_type) \
175 : elf_getu32(swap, sh64.sh_type))
176 #define xsh_name (clazz == ELFCLASS32 \
177 ? elf_getu32(swap, sh32.sh_name) \
178 : elf_getu32(swap, sh64.sh_name))
179
180 #define xph_addr (clazz == ELFCLASS32 \
181 ? CAST(void *, &ph32) \
182 : CAST(void *, &ph64))
183 #define xph_sizeof (clazz == ELFCLASS32 \
184 ? sizeof(ph32) \
185 : sizeof(ph64))
186 #define xph_type (clazz == ELFCLASS32 \
187 ? elf_getu32(swap, ph32.p_type) \
188 : elf_getu32(swap, ph64.p_type))
189 #define xph_offset CAST(off_t, (clazz == ELFCLASS32 \
190 ? elf_getu32(swap, ph32.p_offset) \
191 : elf_getu64(swap, ph64.p_offset)))
192 #define xph_align CAST(size_t, (clazz == ELFCLASS32 \
193 ? CAST(off_t, (ph32.p_align ? \
194 elf_getu32(swap, ph32.p_align) : 4))\
195 : CAST(off_t, (ph64.p_align ? \
196 elf_getu64(swap, ph64.p_align) : 4))))
197 #define xph_vaddr CAST(size_t, (clazz == ELFCLASS32 \
198 ? CAST(off_t, (ph32.p_vaddr ? \
199 elf_getu32(swap, ph32.p_vaddr) : 4))\
200 : CAST(off_t, (ph64.p_vaddr ? \
201 elf_getu64(swap, ph64.p_vaddr) : 4))))
202 #define xph_filesz CAST(size_t, (clazz == ELFCLASS32 \
203 ? elf_getu32(swap, ph32.p_filesz) \
204 : elf_getu64(swap, ph64.p_filesz)))
205 #define xph_memsz CAST(size_t, ((clazz == ELFCLASS32 \
206 ? elf_getu32(swap, ph32.p_memsz) \
207 : elf_getu64(swap, ph64.p_memsz))))
208 #define xnh_addr (clazz == ELFCLASS32 \
209 ? CAST(void *, &nh32) \
210 : CAST(void *, &nh64))
211 #define xnh_sizeof (clazz == ELFCLASS32 \
212 ? sizeof(nh32) \
213 : sizeof(nh64))
214 #define xnh_type (clazz == ELFCLASS32 \
215 ? elf_getu32(swap, nh32.n_type) \
216 : elf_getu32(swap, nh64.n_type))
217 #define xnh_namesz (clazz == ELFCLASS32 \
218 ? elf_getu32(swap, nh32.n_namesz) \
219 : elf_getu32(swap, nh64.n_namesz))
220 #define xnh_descsz (clazz == ELFCLASS32 \
221 ? elf_getu32(swap, nh32.n_descsz) \
222 : elf_getu32(swap, nh64.n_descsz))
223
224 #define xdh_addr (clazz == ELFCLASS32 \
225 ? CAST(void *, &dh32) \
226 : CAST(void *, &dh64))
227 #define xdh_sizeof (clazz == ELFCLASS32 \
228 ? sizeof(dh32) \
229 : sizeof(dh64))
230 #define xdh_tag (clazz == ELFCLASS32 \
231 ? elf_getu32(swap, dh32.d_tag) \
232 : elf_getu64(swap, dh64.d_tag))
233 #define xdh_val (clazz == ELFCLASS32 \
234 ? elf_getu32(swap, dh32.d_un.d_val) \
235 : elf_getu64(swap, dh64.d_un.d_val))
236
237 #define xcap_addr (clazz == ELFCLASS32 \
238 ? CAST(void *, &cap32) \
239 : CAST(void *, &cap64))
240 #define xcap_sizeof (clazz == ELFCLASS32 \
241 ? sizeof(cap32) \
242 : sizeof(cap64))
243 #define xcap_tag (clazz == ELFCLASS32 \
244 ? elf_getu32(swap, cap32.c_tag) \
245 : elf_getu64(swap, cap64.c_tag))
246 #define xcap_val (clazz == ELFCLASS32 \
247 ? elf_getu32(swap, cap32.c_un.c_val) \
248 : elf_getu64(swap, cap64.c_un.c_val))
249
250 #define xauxv_addr (clazz == ELFCLASS32 \
251 ? CAST(void *, &auxv32) \
252 : CAST(void *, &auxv64))
253 #define xauxv_sizeof (clazz == ELFCLASS32 \
254 ? sizeof(auxv32) \
255 : sizeof(auxv64))
256 #define xauxv_type (clazz == ELFCLASS32 \
257 ? elf_getu32(swap, auxv32.a_type) \
258 : elf_getu64(swap, auxv64.a_type))
259 #define xauxv_val (clazz == ELFCLASS32 \
260 ? elf_getu32(swap, auxv32.a_v) \
261 : elf_getu64(swap, auxv64.a_v))
262
263 #define prpsoffsets(i) (clazz == ELFCLASS32 \
264 ? prpsoffsets32[i] \
265 : prpsoffsets64[i])
266
267 #ifdef ELFCORE
268 /*
269 * Try larger offsets first to avoid false matches
270 * from earlier data that happen to look like strings.
271 */
272 static const size_t prpsoffsets32[] = {
273 #ifdef USE_NT_PSINFO
274 104, /* SunOS 5.x (command line) */
275 88, /* SunOS 5.x (short name) */
276 #endif /* USE_NT_PSINFO */
277
278 100, /* SunOS 5.x (command line) */
279 84, /* SunOS 5.x (short name) */
280
281 44, /* Linux (command line) */
282 28, /* Linux (short name) */
283
284 48, /* Linux PowerPC (command line) */
285 32, /* Linux PowerPC (short name) */
286
287 8, /* FreeBSD */
288 };
289
290 static const size_t prpsoffsets64[] = {
291 #ifdef USE_NT_PSINFO
292 152, /* SunOS 5.x (command line) */
293 136, /* SunOS 5.x (short name) */
294 #endif /* USE_NT_PSINFO */
295
296 136, /* SunOS 5.x, 64-bit (command line) */
297 120, /* SunOS 5.x, 64-bit (short name) */
298
299 56, /* Linux (command line) */
300 40, /* Linux (tested on core from 2.4.x, short name) */
301
302 16, /* FreeBSD, 64-bit */
303 };
304
305 #define NOFFSETS32 __arraycount(prpsoffsets32)
306 #define NOFFSETS64 __arraycount(prpsoffsets64)
307
308 #define NOFFSETS (clazz == ELFCLASS32 ? NOFFSETS32 : NOFFSETS64)
309
310 /*
311 * Look through the program headers of an executable image, searching
312 * for a PT_NOTE section of type NT_PRPSINFO, with a name "CORE" or
313 * "FreeBSD"; if one is found, try looking in various places in its
314 * contents for a 16-character string containing only printable
315 * characters - if found, that string should be the name of the program
316 * that dropped core. Note: right after that 16-character string is,
317 * at least in SunOS 5.x (and possibly other SVR4-flavored systems) and
318 * Linux, a longer string (80 characters, in 5.x, probably other
319 * SVR4-flavored systems, and Linux) containing the start of the
320 * command line for that program.
321 *
322 * SunOS 5.x core files contain two PT_NOTE sections, with the types
323 * NT_PRPSINFO (old) and NT_PSINFO (new). These structs contain the
324 * same info about the command name and command line, so it probably
325 * isn't worthwhile to look for NT_PSINFO, but the offsets are provided
326 * above (see USE_NT_PSINFO), in case we ever decide to do so. The
327 * NT_PRPSINFO and NT_PSINFO sections are always in order and adjacent;
328 * the SunOS 5.x file command relies on this (and prefers the latter).
329 *
330 * The signal number probably appears in a section of type NT_PRSTATUS,
331 * but that's also rather OS-dependent, in ways that are harder to
332 * dissect with heuristics, so I'm not bothering with the signal number.
333 * (I suppose the signal number could be of interest in situations where
334 * you don't have the binary of the program that dropped core; if you
335 * *do* have that binary, the debugger will probably tell you what
336 * signal it was.)
337 */
338
339 #define OS_STYLE_SVR4 0
340 #define OS_STYLE_FREEBSD 1
341 #define OS_STYLE_NETBSD 2
342
343 file_private const char os_style_names[][8] = {
344 "SVR4",
345 "FreeBSD",
346 "NetBSD",
347 };
348
349 #define FLAGS_CORE_STYLE 0x0003
350
351 #define FLAGS_DID_CORE 0x0004
352 #define FLAGS_DID_OS_NOTE 0x0008
353 #define FLAGS_DID_BUILD_ID 0x0010
354 #define FLAGS_DID_CORE_STYLE 0x0020
355 #define FLAGS_DID_NETBSD_PAX 0x0040
356 #define FLAGS_DID_NETBSD_MARCH 0x0080
357 #define FLAGS_DID_NETBSD_CMODEL 0x0100
358 #define FLAGS_DID_NETBSD_EMULATION 0x0200
359 #define FLAGS_DID_NETBSD_UNKNOWN 0x0400
360 #define FLAGS_DID_ANDROID_MEMTAG 0x0800
361 #define FLAGS_IS_CORE 0x1000
362 #define FLAGS_DID_AUXV 0x2000
363
364 file_private int
dophn_core(struct magic_set * ms,int clazz,int swap,int fd,off_t off,int num,size_t size,off_t fsize,int * flags,uint16_t * notecount)365 dophn_core(struct magic_set *ms, int clazz, int swap, int fd, off_t off,
366 int num, size_t size, off_t fsize, int *flags, uint16_t *notecount)
367 {
368 Elf32_Phdr ph32;
369 Elf64_Phdr ph64;
370 size_t offset, len;
371 unsigned char nbuf[NBUFSIZE];
372 ssize_t bufsize;
373 off_t ph_off = off, offs;
374 int ph_num = num;
375
376 if (ms->flags & MAGIC_MIME)
377 return 0;
378
379 if (num == 0) {
380 if (elf_printf(ms, ", no program header") == -1)
381 return -1;
382 return 0;
383 }
384 if (size != xph_sizeof) {
385 if (elf_printf(ms, ", corrupted program header size") == -1)
386 return -1;
387 return 0;
388 }
389
390 /*
391 * Loop through all the program headers.
392 */
393 for ( ; num; num--) {
394 if (pread(fd, xph_addr, xph_sizeof, off) <
395 CAST(ssize_t, xph_sizeof)) {
396 if (elf_printf(ms,
397 ", can't read elf program headers at %jd",
398 (intmax_t)off) == -1)
399 return -1;
400 return 0;
401 }
402 off += size;
403
404 if (fsize != SIZE_UNKNOWN && xph_offset > fsize) {
405 /* Perhaps warn here */
406 continue;
407 }
408
409 if (xph_type != PT_NOTE)
410 continue;
411
412 /*
413 * This is a PT_NOTE section; loop through all the notes
414 * in the section.
415 */
416 len = xph_filesz < sizeof(nbuf) ? xph_filesz : sizeof(nbuf);
417 offs = xph_offset;
418 if ((bufsize = pread(fd, nbuf, len, offs)) == -1) {
419 if (elf_printf(ms, " can't read note section at %jd",
420 (intmax_t)offs) == -1)
421 return -1;
422 return 0;
423 }
424 offset = 0;
425 for (;;) {
426 if (offset >= CAST(size_t, bufsize))
427 break;
428 offset = donote(ms, nbuf, offset, CAST(size_t, bufsize),
429 clazz, swap, 4, flags, notecount, fd, ph_off,
430 ph_num, fsize);
431 if (offset == 0)
432 break;
433
434 }
435 }
436 return 0;
437 }
438 #endif
439
440 static int
do_note_netbsd_version(struct magic_set * ms,int swap,void * v)441 do_note_netbsd_version(struct magic_set *ms, int swap, void *v)
442 {
443 uint32_t desc;
444 memcpy(&desc, v, sizeof(desc));
445 desc = elf_getu32(swap, desc);
446
447 if (elf_printf(ms, ", for NetBSD") == -1)
448 return -1;
449 /*
450 * The version number used to be stuck as 199905, and was thus
451 * basically content-free. Newer versions of NetBSD have fixed
452 * this and now use the encoding of __NetBSD_Version__:
453 *
454 * MMmmrrpp00
455 *
456 * M = major version
457 * m = minor version
458 * r = release ["",A-Z,Z[A-Z] but numeric]
459 * p = patchlevel
460 */
461 if (desc > 100000000U) {
462 uint32_t ver_patch = (desc / 100) % 100;
463 uint32_t ver_rel = (desc / 10000) % 100;
464 uint32_t ver_min = (desc / 1000000) % 100;
465 uint32_t ver_maj = desc / 100000000;
466
467 if (elf_printf(ms, " %u.%u", ver_maj, ver_min) == -1)
468 return -1;
469 if (ver_maj >= 9) {
470 ver_patch += 100 * ver_rel;
471 ver_rel = 0;
472 }
473 if (ver_rel == 0 && ver_patch != 0) {
474 if (elf_printf(ms, ".%u", ver_patch) == -1)
475 return -1;
476 } else if (ver_rel != 0) {
477 while (ver_rel > 26) {
478 if (elf_printf(ms, "Z") == -1)
479 return -1;
480 ver_rel -= 26;
481 }
482 if (elf_printf(ms, "%c", 'A' + ver_rel - 1) == -1)
483 return -1;
484 }
485 }
486 return 0;
487 }
488
489 static int
do_note_freebsd_version(struct magic_set * ms,int swap,void * v)490 do_note_freebsd_version(struct magic_set *ms, int swap, void *v)
491 {
492 uint32_t desc;
493
494 memcpy(&desc, v, sizeof(desc));
495 desc = elf_getu32(swap, desc);
496 if (elf_printf(ms, ", for FreeBSD") == -1)
497 return -1;
498
499 /*
500 * Contents is __FreeBSD_version, whose relation to OS
501 * versions is defined by a huge table in the Porter's
502 * Handbook. This is the general scheme:
503 *
504 * Releases:
505 * Mmp000 (before 4.10)
506 * Mmi0p0 (before 5.0)
507 * Mmm0p0
508 *
509 * Development branches:
510 * Mmpxxx (before 4.6)
511 * Mmp1xx (before 4.10)
512 * Mmi1xx (before 5.0)
513 * M000xx (pre-M.0)
514 * Mmm1xx
515 *
516 * M = major version
517 * m = minor version
518 * i = minor version increment (491000 -> 4.10)
519 * p = patchlevel
520 * x = revision
521 *
522 * The first release of FreeBSD to use ELF by default
523 * was version 3.0.
524 */
525 if (desc == 460002) {
526 if (elf_printf(ms, " 4.6.2") == -1)
527 return -1;
528 } else if (desc < 460100) {
529 if (elf_printf(ms, " %d.%d", desc / 100000,
530 desc / 10000 % 10) == -1)
531 return -1;
532 if (desc / 1000 % 10 > 0)
533 if (elf_printf(ms, ".%d", desc / 1000 % 10) == -1)
534 return -1;
535 if ((desc % 1000 > 0) || (desc % 100000 == 0))
536 if (elf_printf(ms, " (%d)", desc) == -1)
537 return -1;
538 } else if (desc < 500000) {
539 if (elf_printf(ms, " %d.%d", desc / 100000,
540 desc / 10000 % 10 + desc / 1000 % 10) == -1)
541 return -1;
542 if (desc / 100 % 10 > 0) {
543 if (elf_printf(ms, " (%d)", desc) == -1)
544 return -1;
545 } else if (desc / 10 % 10 > 0) {
546 if (elf_printf(ms, ".%d", desc / 10 % 10) == -1)
547 return -1;
548 }
549 } else {
550 if (elf_printf(ms, " %d.%d", desc / 100000,
551 desc / 1000 % 100) == -1)
552 return -1;
553 if ((desc / 100 % 10 > 0) ||
554 (desc % 100000 / 100 == 0)) {
555 if (elf_printf(ms, " (%d)", desc) == -1)
556 return -1;
557 } else if (desc / 10 % 10 > 0) {
558 if (elf_printf(ms, ".%d", desc / 10 % 10) == -1)
559 return -1;
560 }
561 }
562 return 0;
563 }
564
565 file_private int
566 /*ARGSUSED*/
do_bid_note(struct magic_set * ms,unsigned char * nbuf,uint32_t type,int swap,uint32_t namesz,uint32_t descsz,size_t noff,size_t doff,int * flags)567 do_bid_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
568 int swap __attribute__((__unused__)), uint32_t namesz, uint32_t descsz,
569 size_t noff, size_t doff, int *flags)
570 {
571 if (NAMEEQUALS(RCAST(char *, &nbuf[noff]), "GNU") &&
572 type == NT_GNU_BUILD_ID && (descsz >= 4 && descsz <= 20)) {
573 uint8_t desc[20];
574 const char *btype;
575 uint32_t i;
576 *flags |= FLAGS_DID_BUILD_ID;
577 switch (descsz) {
578 case 8:
579 btype = "xxHash";
580 break;
581 case 16:
582 btype = "md5/uuid";
583 break;
584 case 20:
585 btype = "sha1";
586 break;
587 default:
588 btype = "unknown";
589 break;
590 }
591 if (elf_printf(ms, ", BuildID[%s]=", btype) == -1)
592 return -1;
593 memcpy(desc, &nbuf[doff], descsz);
594 for (i = 0; i < descsz; i++)
595 if (elf_printf(ms, "%02x", desc[i]) == -1)
596 return -1;
597 return 1;
598 }
599 if (namesz == 4 && memcmp(RCAST(char *, &nbuf[noff]), "Go", 3) == 0 &&
600 type == NT_GO_BUILD_ID && descsz < 128) {
601 char buf[256];
602 if (elf_printf(ms, ", Go BuildID=%s",
603 file_copystr(buf, sizeof(buf), descsz,
604 RCAST(const char *, &nbuf[doff]))) == -1)
605 return -1;
606 return 1;
607 }
608 return 0;
609 }
610
611 file_private int
do_os_note(struct magic_set * ms,unsigned char * nbuf,uint32_t type,int swap,uint32_t namesz,uint32_t descsz,size_t noff,size_t doff,int * flags)612 do_os_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
613 int swap, uint32_t namesz, uint32_t descsz,
614 size_t noff, size_t doff, int *flags)
615 {
616 const char *name = RCAST(const char *, &nbuf[noff]);
617
618 if (NAMEEQUALS(name, "SuSE") && type == NT_GNU_VERSION && descsz == 2) {
619 *flags |= FLAGS_DID_OS_NOTE;
620 if (elf_printf(ms, ", for SuSE %d.%d", nbuf[doff],
621 nbuf[doff + 1]) == -1)
622 return -1;
623 return 1;
624 }
625
626 if (NAMEEQUALS(name, "GNU") && type == NT_GNU_VERSION && descsz == 16) {
627 uint32_t desc[4];
628 memcpy(desc, &nbuf[doff], sizeof(desc));
629
630 *flags |= FLAGS_DID_OS_NOTE;
631 if (elf_printf(ms, ", for GNU/") == -1)
632 return -1;
633 switch (elf_getu32(swap, desc[0])) {
634 case GNU_OS_LINUX:
635 if (elf_printf(ms, "Linux") == -1)
636 return -1;
637 break;
638 case GNU_OS_HURD:
639 if (elf_printf(ms, "Hurd") == -1)
640 return -1;
641 break;
642 case GNU_OS_SOLARIS:
643 if (elf_printf(ms, "Solaris") == -1)
644 return -1;
645 break;
646 case GNU_OS_KFREEBSD:
647 if (elf_printf(ms, "kFreeBSD") == -1)
648 return -1;
649 break;
650 case GNU_OS_KNETBSD:
651 if (elf_printf(ms, "kNetBSD") == -1)
652 return -1;
653 break;
654 default:
655 if (elf_printf(ms, "<unknown>") == -1)
656 return -1;
657 }
658 if (elf_printf(ms, " %d.%d.%d", elf_getu32(swap, desc[1]),
659 elf_getu32(swap, desc[2]), elf_getu32(swap, desc[3])) == -1)
660 return -1;
661 return 1;
662 }
663
664 if (NAMEEQUALS(name, "NetBSD") &&
665 type == NT_NETBSD_VERSION && descsz == 4) {
666 *flags |= FLAGS_DID_OS_NOTE;
667 if (do_note_netbsd_version(ms, swap, &nbuf[doff]) == -1)
668 return -1;
669 return 1;
670 }
671
672 if (NAMEEQUALS(name, "FreeBSD") &&
673 type == NT_FREEBSD_VERSION && descsz == 4) {
674 *flags |= FLAGS_DID_OS_NOTE;
675 if (do_note_freebsd_version(ms, swap, &nbuf[doff])
676 == -1)
677 return -1;
678 return 1;
679 }
680
681 if (NAMEEQUALS(name, "OpenBSD") &&
682 type == NT_OPENBSD_VERSION && descsz == 4) {
683 *flags |= FLAGS_DID_OS_NOTE;
684 if (elf_printf(ms, ", for OpenBSD") == -1)
685 return -1;
686 /* Content of note is always 0 */
687 return 1;
688 }
689
690 if (NAMEEQUALS(name, "DragonFly") &&
691 type == NT_DRAGONFLY_VERSION && descsz == 4) {
692 uint32_t desc;
693 *flags |= FLAGS_DID_OS_NOTE;
694 if (elf_printf(ms, ", for DragonFly") == -1)
695 return -1;
696 memcpy(&desc, &nbuf[doff], sizeof(desc));
697 desc = elf_getu32(swap, desc);
698 if (elf_printf(ms, " %d.%d.%d", desc / 100000,
699 desc / 10000 % 10, desc % 10000) == -1)
700 return -1;
701 return 1;
702 }
703
704 if (NAMEEQUALS(name, "Android") &&
705 type == NT_ANDROID_VERSION && descsz >= 4) {
706 uint32_t api_level;
707 *flags |= FLAGS_DID_OS_NOTE;
708 memcpy(&api_level, &nbuf[doff], sizeof(api_level));
709 api_level = elf_getu32(swap, api_level);
710 if (elf_printf(ms, ", for Android %d", api_level) == -1)
711 return -1;
712 /*
713 * NDK r14 and later also include details of the NDK that
714 * built the binary. OS binaries (or binaries built by older
715 * NDKs) don't have this. The NDK release and build number
716 * are both 64-byte strings.
717 */
718 if (descsz >= 4 + 64 + 64) {
719 if (elf_printf(ms, ", built by NDK %.64s (%.64s)",
720 &nbuf[doff + 4], &nbuf[doff + 4 + 64]) == -1)
721 return -1;
722 }
723 }
724
725 return 0;
726 }
727
728 file_private int
do_pax_note(struct magic_set * ms,unsigned char * nbuf,uint32_t type,int swap,uint32_t namesz,uint32_t descsz,size_t noff,size_t doff,int * flags)729 do_pax_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
730 int swap, uint32_t namesz, uint32_t descsz,
731 size_t noff, size_t doff, int *flags)
732 {
733 const char *name = RCAST(const char *, &nbuf[noff]);
734
735 if (NAMEEQUALS(name, "PaX") && type == NT_NETBSD_PAX && descsz == 4) {
736 static const char *pax[] = {
737 "+mprotect",
738 "-mprotect",
739 "+segvguard",
740 "-segvguard",
741 "+ASLR",
742 "-ASLR",
743 };
744 uint32_t desc;
745 size_t i;
746 int did = 0;
747
748 *flags |= FLAGS_DID_NETBSD_PAX;
749 memcpy(&desc, &nbuf[doff], sizeof(desc));
750 desc = elf_getu32(swap, desc);
751
752 if (desc && elf_printf(ms, ", PaX: ") == -1)
753 return -1;
754
755 for (i = 0; i < __arraycount(pax); i++) {
756 if (((1 << CAST(int, i)) & desc) == 0)
757 continue;
758 if (elf_printf(ms, "%s%s", did++ ? "," : "",
759 pax[i]) == -1)
760 return -1;
761 }
762 return 1;
763 }
764 return 0;
765 }
766
767 file_private int
do_memtag_note(struct magic_set * ms,unsigned char * nbuf,uint32_t type,int swap,uint32_t namesz,uint32_t descsz,size_t noff,size_t doff,int * flags)768 do_memtag_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
769 int swap, uint32_t namesz, uint32_t descsz,
770 size_t noff, size_t doff, int *flags)
771 {
772 const char *name = RCAST(const char *, &nbuf[noff]);
773
774 if (NAMEEQUALS(name, "Android") &&
775 type == NT_ANDROID_MEMTAG && descsz == 4) {
776 static const char *memtag[] = {
777 "none",
778 "async",
779 "sync",
780 "heap",
781 "stack",
782 };
783 uint32_t desc;
784 size_t i;
785 int did = 0;
786
787 *flags |= FLAGS_DID_ANDROID_MEMTAG;
788 memcpy(&desc, &nbuf[doff], sizeof(desc));
789 desc = elf_getu32(swap, desc);
790
791 if (desc && elf_printf(ms, ", Android Memtag: ") == -1)
792 return -1;
793
794 for (i = 0; i < __arraycount(memtag); i++) {
795 if (((1 << CAST(int, i)) & desc) == 0)
796 continue;
797 if (elf_printf(ms, "%s%s", did++ ? "," : "",
798 memtag[i]) == -1)
799 return -1;
800 }
801 return 1;
802 }
803 return 0;
804 }
805
806 file_private int
do_core_note(struct magic_set * ms,unsigned char * nbuf,uint32_t type,int swap,uint32_t namesz,uint32_t descsz,size_t noff,size_t doff,int * flags,size_t size,int clazz)807 do_core_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
808 int swap, uint32_t namesz, uint32_t descsz,
809 size_t noff, size_t doff, int *flags, size_t size, int clazz)
810 {
811 #ifdef ELFCORE
812 char buf[256];
813 const char *name = RCAST(const char *, &nbuf[noff]);
814
815 int os_style = -1;
816 /*
817 * Sigh. The 2.0.36 kernel in Debian 2.1, at
818 * least, doesn't correctly implement name
819 * sections, in core dumps, as specified by
820 * the "Program Linking" section of "UNIX(R) System
821 * V Release 4 Programmer's Guide: ANSI C and
822 * Programming Support Tools", because my copy
823 * clearly says "The first 'namesz' bytes in 'name'
824 * contain a *null-terminated* [emphasis mine]
825 * character representation of the entry's owner
826 * or originator", but the 2.0.36 kernel code
827 * doesn't include the terminating null in the
828 * name....
829 */
830 if ((namesz == 4 && memcmp(name, "CORE", 4) == 0) ||
831 NAMEEQUALS(name, "CORE")) {
832 os_style = OS_STYLE_SVR4;
833 }
834
835 if (NAMEEQUALS(name, "FreeBSD")) {
836 os_style = OS_STYLE_FREEBSD;
837 }
838
839 if ((namesz >= 11 && memcmp(name, "NetBSD-CORE", 11) == 0)) {
840 os_style = OS_STYLE_NETBSD;
841 }
842
843 if (os_style != -1 && (*flags & FLAGS_DID_CORE_STYLE) == 0) {
844 if (elf_printf(ms, ", %s-style", os_style_names[os_style])
845 == -1)
846 return -1;
847 *flags |= FLAGS_DID_CORE_STYLE;
848 *flags |= os_style;
849 }
850
851 switch (os_style) {
852 case OS_STYLE_NETBSD:
853 if (type == NT_NETBSD_CORE_PROCINFO) {
854 char sbuf[512];
855 struct NetBSD_elfcore_procinfo pi;
856 memset(&pi, 0, sizeof(pi));
857 memcpy(&pi, nbuf + doff, MIN(descsz, sizeof(pi)));
858
859 if (elf_printf(ms, ", from '%.31s', pid=%u, uid=%u, "
860 "gid=%u, nlwps=%u, lwp=%u (signal %u/code %u)",
861 file_printable(ms, sbuf, sizeof(sbuf),
862 RCAST(char *, pi.cpi_name), sizeof(pi.cpi_name)),
863 elf_getu32(swap, CAST(uint32_t, pi.cpi_pid)),
864 elf_getu32(swap, pi.cpi_euid),
865 elf_getu32(swap, pi.cpi_egid),
866 elf_getu32(swap, pi.cpi_nlwps),
867 elf_getu32(swap, CAST(uint32_t, pi.cpi_siglwp)),
868 elf_getu32(swap, pi.cpi_signo),
869 elf_getu32(swap, pi.cpi_sigcode)) == -1)
870 return -1;
871
872 *flags |= FLAGS_DID_CORE;
873 return 1;
874 }
875 break;
876
877 case OS_STYLE_FREEBSD:
878 if (type == NT_PRPSINFO && *flags & FLAGS_IS_CORE) {
879 size_t argoff, pidoff;
880
881 if (clazz == ELFCLASS32)
882 argoff = 4 + 4 + 17;
883 else
884 argoff = 4 + 4 + 8 + 17;
885 if (elf_printf(ms, ", from '%.80s'", nbuf + doff +
886 argoff) == -1)
887 return -1;
888 pidoff = argoff + 81 + 2;
889 if (doff + pidoff + 4 <= size) {
890 if (elf_printf(ms, ", pid=%u",
891 elf_getu32(swap, *RCAST(uint32_t *, (nbuf +
892 doff + pidoff)))) == -1)
893 return -1;
894 }
895 *flags |= FLAGS_DID_CORE;
896 }
897 break;
898
899 default:
900 if (type == NT_PRPSINFO && *flags & FLAGS_IS_CORE) {
901 size_t i, j;
902 unsigned char c;
903 /*
904 * Extract the program name. We assume
905 * it to be 16 characters (that's what it
906 * is in SunOS 5.x and Linux).
907 *
908 * Unfortunately, it's at a different offset
909 * in various OSes, so try multiple offsets.
910 * If the characters aren't all printable,
911 * reject it.
912 */
913 for (i = 0; i < NOFFSETS; i++) {
914 unsigned char *cname, *cp;
915 size_t reloffset = prpsoffsets(i);
916 size_t noffset = doff + reloffset;
917 size_t k;
918 for (j = 0; j < 16; j++, noffset++,
919 reloffset++) {
920 /*
921 * Make sure we're not past
922 * the end of the buffer; if
923 * we are, just give up.
924 */
925 if (noffset >= size)
926 goto tryanother;
927
928 /*
929 * Make sure we're not past
930 * the end of the contents;
931 * if we are, this obviously
932 * isn't the right offset.
933 */
934 if (reloffset >= descsz)
935 goto tryanother;
936
937 c = nbuf[noffset];
938 if (c == '\0') {
939 /*
940 * A '\0' at the
941 * beginning is
942 * obviously wrong.
943 * Any other '\0'
944 * means we're done.
945 */
946 if (j == 0)
947 goto tryanother;
948 else
949 break;
950 } else {
951 /*
952 * A nonprintable
953 * character is also
954 * wrong.
955 */
956 if (!isprint(c) || isquote(c))
957 goto tryanother;
958 }
959 }
960 /*
961 * Well, that worked.
962 */
963
964 /*
965 * Try next offsets, in case this match is
966 * in the middle of a string.
967 */
968 for (k = i + 1 ; k < NOFFSETS; k++) {
969 size_t no;
970 int adjust = 1;
971 if (prpsoffsets(k) >= prpsoffsets(i))
972 continue;
973 /*
974 * pr_fname == pr_psargs - 16 &&
975 * non-nul-terminated fname (qemu)
976 */
977 if (prpsoffsets(k) ==
978 prpsoffsets(i) - 16 && j == 16)
979 continue;
980 for (no = doff + prpsoffsets(k);
981 no < doff + prpsoffsets(i); no++)
982 adjust = adjust
983 && isprint(nbuf[no]);
984 if (adjust)
985 i = k;
986 }
987
988 cname = CAST(unsigned char *,
989 &nbuf[doff + prpsoffsets(i)]);
990 for (cp = cname; cp < nbuf + size && *cp
991 && isprint(*cp); cp++)
992 continue;
993 /*
994 * Linux apparently appends a space at the end
995 * of the command line: remove it.
996 */
997 while (cp > cname && isspace(cp[-1]))
998 cp--;
999 if (elf_printf(ms, ", from '%s'",
1000 file_copystr(buf, sizeof(buf),
1001 CAST(size_t, cp - cname),
1002 RCAST(char *, cname))) == -1)
1003 return -1;
1004 *flags |= FLAGS_DID_CORE;
1005 return 1;
1006
1007 tryanother:
1008 ;
1009 }
1010 }
1011 break;
1012 }
1013 #endif
1014 return 0;
1015 }
1016
1017 file_private off_t
get_offset_from_virtaddr(struct magic_set * ms,int swap,int clazz,int fd,off_t off,int num,off_t fsize,uint64_t virtaddr)1018 get_offset_from_virtaddr(struct magic_set *ms, int swap, int clazz, int fd,
1019 off_t off, int num, off_t fsize, uint64_t virtaddr)
1020 {
1021 Elf32_Phdr ph32;
1022 Elf64_Phdr ph64;
1023
1024 /*
1025 * Loop through all the program headers and find the header with
1026 * virtual address in which the "virtaddr" belongs to.
1027 */
1028 for ( ; num; num--) {
1029 if (pread(fd, xph_addr, xph_sizeof, off) <
1030 CAST(ssize_t, xph_sizeof)) {
1031 if (elf_printf(ms,
1032 ", can't read elf program header at %jd",
1033 (intmax_t)off) == -1)
1034 return -1;
1035 return 0;
1036
1037 }
1038 off += xph_sizeof;
1039
1040 if (fsize != SIZE_UNKNOWN && xph_offset > fsize) {
1041 /* Perhaps warn here */
1042 continue;
1043 }
1044
1045 if (virtaddr >= xph_vaddr && virtaddr < xph_vaddr + xph_filesz)
1046 return xph_offset + (virtaddr - xph_vaddr);
1047 }
1048 return 0;
1049 }
1050
1051 file_private size_t
get_string_on_virtaddr(struct magic_set * ms,int swap,int clazz,int fd,off_t ph_off,int ph_num,off_t fsize,uint64_t virtaddr,char * buf,ssize_t buflen)1052 get_string_on_virtaddr(struct magic_set *ms,
1053 int swap, int clazz, int fd, off_t ph_off, int ph_num,
1054 off_t fsize, uint64_t virtaddr, char *buf, ssize_t buflen)
1055 {
1056 char *bptr;
1057 off_t offset;
1058
1059 if (buflen == 0)
1060 return 0;
1061
1062 offset = get_offset_from_virtaddr(ms, swap, clazz, fd, ph_off, ph_num,
1063 fsize, virtaddr);
1064 if (offset < 0 ||
1065 (buflen = pread(fd, buf, CAST(size_t, buflen), offset)) <= 0) {
1066 (void)elf_printf(ms, ", can't read elf string at %jd",
1067 (intmax_t)offset);
1068 return 0;
1069 }
1070
1071 buf[buflen - 1] = '\0';
1072
1073 /* We expect only printable characters, so return if buffer contains
1074 * non-printable character before the '\0' or just '\0'. */
1075 for (bptr = buf; *bptr && isprint(CAST(unsigned char, *bptr)); bptr++)
1076 continue;
1077 if (*bptr != '\0')
1078 return 0;
1079
1080 return bptr - buf;
1081 }
1082
1083
1084 /*ARGSUSED*/
1085 file_private int
do_auxv_note(struct magic_set * ms,unsigned char * nbuf,uint32_t type,int swap,uint32_t namesz,uint32_t descsz,size_t noff,size_t doff,int * flags,size_t size,int clazz,int fd,off_t ph_off,int ph_num,off_t fsize)1086 do_auxv_note(struct magic_set *ms, unsigned char *nbuf, uint32_t type,
1087 int swap, uint32_t namesz __attribute__((__unused__)),
1088 uint32_t descsz __attribute__((__unused__)),
1089 size_t noff __attribute__((__unused__)), size_t doff,
1090 int *flags, size_t size __attribute__((__unused__)), int clazz,
1091 int fd, off_t ph_off, int ph_num, off_t fsize)
1092 {
1093 #ifdef ELFCORE
1094 Aux32Info auxv32;
1095 Aux64Info auxv64;
1096 size_t elsize = xauxv_sizeof;
1097 const char *tag;
1098 int is_string;
1099 size_t nval, off;
1100
1101 if ((*flags & (FLAGS_IS_CORE|FLAGS_DID_CORE_STYLE)) !=
1102 (FLAGS_IS_CORE|FLAGS_DID_CORE_STYLE))
1103 return 0;
1104
1105 switch (*flags & FLAGS_CORE_STYLE) {
1106 case OS_STYLE_SVR4:
1107 if (type != NT_AUXV)
1108 return 0;
1109 break;
1110 #ifdef notyet
1111 case OS_STYLE_NETBSD:
1112 if (type != NT_NETBSD_CORE_AUXV)
1113 return 0;
1114 break;
1115 case OS_STYLE_FREEBSD:
1116 if (type != NT_FREEBSD_PROCSTAT_AUXV)
1117 return 0;
1118 break;
1119 #endif
1120 default:
1121 return 0;
1122 }
1123
1124 *flags |= FLAGS_DID_AUXV;
1125
1126 nval = 0;
1127 for (off = 0; off + elsize <= descsz; off += elsize) {
1128 memcpy(xauxv_addr, &nbuf[doff + off], xauxv_sizeof);
1129 /* Limit processing to 50 vector entries to prevent DoS */
1130 if (nval++ >= 50) {
1131 file_error(ms, 0, "Too many ELF Auxv elements");
1132 return 1;
1133 }
1134
1135 switch(xauxv_type) {
1136 case AT_LINUX_EXECFN:
1137 is_string = 1;
1138 tag = "execfn";
1139 break;
1140 case AT_LINUX_PLATFORM:
1141 is_string = 1;
1142 tag = "platform";
1143 break;
1144 case AT_LINUX_UID:
1145 is_string = 0;
1146 tag = "real uid";
1147 break;
1148 case AT_LINUX_GID:
1149 is_string = 0;
1150 tag = "real gid";
1151 break;
1152 case AT_LINUX_EUID:
1153 is_string = 0;
1154 tag = "effective uid";
1155 break;
1156 case AT_LINUX_EGID:
1157 is_string = 0;
1158 tag = "effective gid";
1159 break;
1160 default:
1161 is_string = 0;
1162 tag = NULL;
1163 break;
1164 }
1165
1166 if (tag == NULL)
1167 continue;
1168
1169 if (is_string) {
1170 char buf[256];
1171 ssize_t buflen;
1172 buflen = get_string_on_virtaddr(ms, swap, clazz, fd,
1173 ph_off, ph_num, fsize, xauxv_val, buf, sizeof(buf));
1174
1175 if (buflen == 0)
1176 continue;
1177
1178 if (elf_printf(ms, ", %s: '%s'", tag, buf) == -1)
1179 return -1;
1180 } else {
1181 if (elf_printf(ms, ", %s: %d", tag,
1182 CAST(int, xauxv_val)) == -1)
1183 return -1;
1184 }
1185 }
1186 return 1;
1187 #else
1188 return 0;
1189 #endif
1190 }
1191
1192 file_private size_t
dodynamic(struct magic_set * ms,void * vbuf,size_t offset,size_t size,int clazz,int swap,int * pie,size_t * need)1193 dodynamic(struct magic_set *ms, void *vbuf, size_t offset, size_t size,
1194 int clazz, int swap, int *pie, size_t *need)
1195 {
1196 Elf32_Dyn dh32;
1197 Elf64_Dyn dh64;
1198 unsigned char *dbuf = CAST(unsigned char *, vbuf);
1199
1200 if (xdh_sizeof + offset > size) {
1201 /*
1202 * We're out of note headers.
1203 */
1204 return xdh_sizeof + offset;
1205 }
1206
1207 memcpy(xdh_addr, &dbuf[offset], xdh_sizeof);
1208 offset += xdh_sizeof;
1209
1210 switch (xdh_tag) {
1211 case DT_FLAGS_1:
1212 if (xdh_val & DF_1_PIE) {
1213 *pie = 1;
1214 ms->mode |= 0111;
1215 } else
1216 ms->mode &= ~0111;
1217 break;
1218 case DT_NEEDED:
1219 (*need)++;
1220 break;
1221 default:
1222 break;
1223 }
1224 return offset;
1225 }
1226
1227
1228 file_private size_t
donote(struct magic_set * ms,void * vbuf,size_t offset,size_t size,int clazz,int swap,size_t align,int * flags,uint16_t * notecount,int fd,off_t ph_off,int ph_num,off_t fsize)1229 donote(struct magic_set *ms, void *vbuf, size_t offset, size_t size,
1230 int clazz, int swap, size_t align, int *flags, uint16_t *notecount,
1231 int fd, off_t ph_off, int ph_num, off_t fsize)
1232 {
1233 Elf32_Nhdr nh32;
1234 Elf64_Nhdr nh64;
1235 size_t noff, doff;
1236 uint32_t namesz, descsz;
1237 char buf[256];
1238 unsigned char *nbuf = CAST(unsigned char *, vbuf);
1239
1240 if (*notecount == 0)
1241 return 0;
1242 --*notecount;
1243
1244 if (xnh_sizeof + offset > size) {
1245 /*
1246 * We're out of note headers.
1247 */
1248 return xnh_sizeof + offset;
1249 }
1250 /*XXX: GCC */
1251 memset(&nh32, 0, sizeof(nh32));
1252 memset(&nh64, 0, sizeof(nh64));
1253
1254 memcpy(xnh_addr, &nbuf[offset], xnh_sizeof);
1255 offset += xnh_sizeof;
1256
1257 namesz = xnh_namesz;
1258 descsz = xnh_descsz;
1259
1260 if ((namesz == 0) && (descsz == 0)) {
1261 /*
1262 * We're out of note headers.
1263 */
1264 return (offset >= size) ? offset : size;
1265 }
1266
1267 if (namesz & 0x80000000) {
1268 (void)elf_printf(ms, ", bad note name size %#lx",
1269 CAST(unsigned long, namesz));
1270 return 0;
1271 }
1272
1273 if (descsz & 0x80000000) {
1274 (void)elf_printf(ms, ", bad note description size %#lx",
1275 CAST(unsigned long, descsz));
1276 return 0;
1277 }
1278
1279 noff = offset;
1280 doff = ELF_ALIGN(offset + namesz);
1281
1282 if (offset + namesz > size) {
1283 /*
1284 * We're past the end of the buffer.
1285 */
1286 return doff;
1287 }
1288
1289 offset = ELF_ALIGN(doff + descsz);
1290 if (doff + descsz > size) {
1291 /*
1292 * We're past the end of the buffer.
1293 */
1294 return (offset >= size) ? offset : size;
1295 }
1296
1297
1298 if ((*flags & FLAGS_DID_OS_NOTE) == 0) {
1299 if (do_os_note(ms, nbuf, xnh_type, swap,
1300 namesz, descsz, noff, doff, flags))
1301 return offset;
1302 }
1303
1304 if ((*flags & FLAGS_DID_BUILD_ID) == 0) {
1305 if (do_bid_note(ms, nbuf, xnh_type, swap,
1306 namesz, descsz, noff, doff, flags))
1307 return offset;
1308 }
1309
1310 if ((*flags & FLAGS_DID_NETBSD_PAX) == 0) {
1311 if (do_pax_note(ms, nbuf, xnh_type, swap,
1312 namesz, descsz, noff, doff, flags))
1313 return offset;
1314 }
1315 if ((*flags & FLAGS_DID_ANDROID_MEMTAG) == 0) {
1316 if (do_memtag_note(ms, nbuf, xnh_type, swap,
1317 namesz, descsz, noff, doff, flags))
1318 return offset;
1319 }
1320
1321 if ((*flags & FLAGS_DID_CORE) == 0) {
1322 if (do_core_note(ms, nbuf, xnh_type, swap,
1323 namesz, descsz, noff, doff, flags, size, clazz))
1324 return offset;
1325 }
1326
1327 if ((*flags & FLAGS_DID_AUXV) == 0) {
1328 if (do_auxv_note(ms, nbuf, xnh_type, swap,
1329 namesz, descsz, noff, doff, flags, size, clazz,
1330 fd, ph_off, ph_num, fsize))
1331 return offset;
1332 }
1333
1334 if (NAMEEQUALS(RCAST(char *, &nbuf[noff]), "NetBSD")) {
1335 int descw, flag;
1336 const char *str, *tag;
1337 if (descsz > 100)
1338 descsz = 100;
1339 switch (xnh_type) {
1340 case NT_NETBSD_VERSION:
1341 return offset;
1342 case NT_NETBSD_MARCH:
1343 flag = FLAGS_DID_NETBSD_MARCH;
1344 tag = "compiled for";
1345 break;
1346 case NT_NETBSD_CMODEL:
1347 flag = FLAGS_DID_NETBSD_CMODEL;
1348 tag = "compiler model";
1349 break;
1350 case NT_NETBSD_EMULATION:
1351 flag = FLAGS_DID_NETBSD_EMULATION;
1352 tag = "emulation:";
1353 break;
1354 default:
1355 if (*flags & FLAGS_DID_NETBSD_UNKNOWN)
1356 return offset;
1357 *flags |= FLAGS_DID_NETBSD_UNKNOWN;
1358 if (elf_printf(ms, ", note=%u", xnh_type) == -1)
1359 return offset;
1360 return offset;
1361 }
1362
1363 if (*flags & flag)
1364 return offset;
1365 str = RCAST(const char *, &nbuf[doff]);
1366 descw = CAST(int, descsz);
1367 *flags |= flag;
1368 elf_printf(ms, ", %s: %s", tag,
1369 file_copystr(buf, sizeof(buf), descw, str));
1370 return offset;
1371 }
1372
1373 return offset;
1374 }
1375
1376 /* SunOS 5.x hardware capability descriptions */
1377 typedef struct cap_desc {
1378 uint64_t cd_mask;
1379 const char *cd_name;
1380 } cap_desc_t;
1381
1382 static const cap_desc_t cap_desc_sparc[] = {
1383 { AV_SPARC_MUL32, "MUL32" },
1384 { AV_SPARC_DIV32, "DIV32" },
1385 { AV_SPARC_FSMULD, "FSMULD" },
1386 { AV_SPARC_V8PLUS, "V8PLUS" },
1387 { AV_SPARC_POPC, "POPC" },
1388 { AV_SPARC_VIS, "VIS" },
1389 { AV_SPARC_VIS2, "VIS2" },
1390 { AV_SPARC_ASI_BLK_INIT, "ASI_BLK_INIT" },
1391 { AV_SPARC_FMAF, "FMAF" },
1392 { AV_SPARC_FJFMAU, "FJFMAU" },
1393 { AV_SPARC_IMA, "IMA" },
1394 { 0, NULL }
1395 };
1396
1397 static const cap_desc_t cap_desc_386[] = {
1398 { AV_386_FPU, "FPU" },
1399 { AV_386_TSC, "TSC" },
1400 { AV_386_CX8, "CX8" },
1401 { AV_386_SEP, "SEP" },
1402 { AV_386_AMD_SYSC, "AMD_SYSC" },
1403 { AV_386_CMOV, "CMOV" },
1404 { AV_386_MMX, "MMX" },
1405 { AV_386_AMD_MMX, "AMD_MMX" },
1406 { AV_386_AMD_3DNow, "AMD_3DNow" },
1407 { AV_386_AMD_3DNowx, "AMD_3DNowx" },
1408 { AV_386_FXSR, "FXSR" },
1409 { AV_386_SSE, "SSE" },
1410 { AV_386_SSE2, "SSE2" },
1411 { AV_386_PAUSE, "PAUSE" },
1412 { AV_386_SSE3, "SSE3" },
1413 { AV_386_MON, "MON" },
1414 { AV_386_CX16, "CX16" },
1415 { AV_386_AHF, "AHF" },
1416 { AV_386_TSCP, "TSCP" },
1417 { AV_386_AMD_SSE4A, "AMD_SSE4A" },
1418 { AV_386_POPCNT, "POPCNT" },
1419 { AV_386_AMD_LZCNT, "AMD_LZCNT" },
1420 { AV_386_SSSE3, "SSSE3" },
1421 { AV_386_SSE4_1, "SSE4.1" },
1422 { AV_386_SSE4_2, "SSE4.2" },
1423 { 0, NULL }
1424 };
1425
1426 file_private int
doshn(struct magic_set * ms,int clazz,int swap,int fd,off_t off,int num,size_t size,off_t fsize,int mach,int strtab,int * flags,uint16_t * notecount)1427 doshn(struct magic_set *ms, int clazz, int swap, int fd, off_t off, int num,
1428 size_t size, off_t fsize, int mach, int strtab, int *flags,
1429 uint16_t *notecount)
1430 {
1431 Elf32_Shdr sh32;
1432 Elf64_Shdr sh64;
1433 int stripped = 1, has_debug_info = 0;
1434 size_t nbadcap = 0;
1435 void *nbuf;
1436 off_t noff, coff, name_off, offs;
1437 uint64_t cap_hw1 = 0; /* SunOS 5.x hardware capabilities */
1438 uint64_t cap_sf1 = 0; /* SunOS 5.x software capabilities */
1439 char name[50];
1440 ssize_t namesize;
1441
1442 if (ms->flags & MAGIC_MIME)
1443 return 0;
1444
1445 if (num == 0) {
1446 if (elf_printf(ms, ", no section header") == -1)
1447 return -1;
1448 return 0;
1449 }
1450 if (size != xsh_sizeof) {
1451 if (elf_printf(ms, ", corrupted section header size") == -1)
1452 return -1;
1453 return 0;
1454 }
1455
1456 /* Read offset of name section to be able to read section names later */
1457 offs = CAST(off_t, (off + size * strtab));
1458 if (pread(fd, xsh_addr, xsh_sizeof, offs) < CAST(ssize_t, xsh_sizeof)) {
1459 if (elf_printf(ms, ", missing section headers at %jd",
1460 (intmax_t)offs) == -1)
1461 return -1;
1462 return 0;
1463 }
1464 name_off = xsh_offset;
1465
1466 if (fsize != SIZE_UNKNOWN && fsize < name_off) {
1467 if (elf_printf(ms, ", too large section header offset %jd",
1468 (intmax_t)name_off) == -1)
1469 return -1;
1470 return 0;
1471 }
1472
1473 for ( ; num; num--) {
1474 /* Read the name of this section. */
1475 offs = name_off + xsh_name;
1476 if ((namesize = pread(fd, name, sizeof(name) - 1, offs))
1477 == -1) {
1478 if (elf_printf(ms,
1479 ", can't read name of elf section at %jd",
1480 (intmax_t)offs) == -1)
1481 return -1;
1482 return 0;
1483 }
1484 name[namesize] = '\0';
1485 if (strcmp(name, ".debug_info") == 0) {
1486 has_debug_info = 1;
1487 stripped = 0;
1488 }
1489
1490 if (pread(fd, xsh_addr, xsh_sizeof, off) <
1491 CAST(ssize_t, xsh_sizeof)) {
1492 if (elf_printf(ms, ", can't read elf section at %jd",
1493 (intmax_t)off) == -1)
1494 return -1;
1495 return 0;
1496 }
1497 off += size;
1498
1499 /* Things we can determine before we seek */
1500 switch (xsh_type) {
1501 case SHT_SYMTAB:
1502 #if 0
1503 case SHT_DYNSYM:
1504 #endif
1505 stripped = 0;
1506 break;
1507 default:
1508 if (fsize != SIZE_UNKNOWN && xsh_offset > fsize) {
1509 /* Perhaps warn here */
1510 continue;
1511 }
1512 break;
1513 }
1514
1515
1516 /* Things we can determine when we seek */
1517 switch (xsh_type) {
1518 case SHT_NOTE:
1519 if (CAST(uintmax_t, (xsh_size + xsh_offset)) >
1520 CAST(uintmax_t, fsize)) {
1521 if (elf_printf(ms,
1522 ", note offset/size %#" INTMAX_T_FORMAT
1523 "x+%#" INTMAX_T_FORMAT "x exceeds"
1524 " file size %#" INTMAX_T_FORMAT "x",
1525 CAST(uintmax_t, xsh_offset),
1526 CAST(uintmax_t, xsh_size),
1527 CAST(uintmax_t, fsize)) == -1)
1528 return -1;
1529 return 0;
1530 }
1531 if (xsh_size > ms->elf_shsize_max) {
1532 file_error(ms, errno, "Note section size too "
1533 "big (%ju > %zu)", (uintmax_t)xsh_size,
1534 ms->elf_shsize_max);
1535 return -1;
1536 }
1537 if ((nbuf = malloc(xsh_size)) == NULL) {
1538 file_error(ms, errno, "Cannot allocate memory"
1539 " for note");
1540 return -1;
1541 }
1542 offs = xsh_offset;
1543 if (pread(fd, nbuf, xsh_size, offs) <
1544 CAST(ssize_t, xsh_size)) {
1545 free(nbuf);
1546 if (elf_printf(ms,
1547 ", can't read elf note at %jd",
1548 (intmax_t)offs) == -1)
1549 return -1;
1550 return 0;
1551 }
1552
1553 noff = 0;
1554 for (;;) {
1555 if (noff >= CAST(off_t, xsh_size))
1556 break;
1557 noff = donote(ms, nbuf, CAST(size_t, noff),
1558 xsh_size, clazz, swap, 4, flags, notecount,
1559 fd, 0, 0, 0);
1560 if (noff == 0)
1561 break;
1562 }
1563 free(nbuf);
1564 break;
1565 case SHT_SUNW_cap:
1566 switch (mach) {
1567 case EM_SPARC:
1568 case EM_SPARCV9:
1569 case EM_IA_64:
1570 case EM_386:
1571 case EM_AMD64:
1572 break;
1573 default:
1574 goto skip;
1575 }
1576
1577 if (nbadcap > 5)
1578 break;
1579 if (lseek(fd, xsh_offset, SEEK_SET)
1580 == CAST(off_t, -1)) {
1581 file_badseek(ms);
1582 return -1;
1583 }
1584 coff = 0;
1585 for (;;) {
1586 Elf32_Cap cap32;
1587 Elf64_Cap cap64;
1588 cap32.c_un.c_val = 0;
1589 cap64.c_un.c_val = 0;
1590 char cbuf[/*CONSTCOND*/
1591 MAX(sizeof(cap32), sizeof(cap64))];
1592 if ((coff += xcap_sizeof) >
1593 CAST(off_t, xsh_size))
1594 break;
1595 if (read(fd, cbuf, CAST(size_t, xcap_sizeof)) !=
1596 CAST(ssize_t, xcap_sizeof)) {
1597 file_badread(ms);
1598 return -1;
1599 }
1600 if (cbuf[0] == 'A') {
1601 #ifdef notyet
1602 char *p = cbuf + 1;
1603 uint32_t len, tag;
1604 memcpy(&len, p, sizeof(len));
1605 p += 4;
1606 len = getu32(swap, len);
1607 if (memcmp("gnu", p, 3) != 0) {
1608 if (elf_printf(ms,
1609 ", unknown capability %.3s", p)
1610 == -1)
1611 return -1;
1612 break;
1613 }
1614 p += strlen(p) + 1;
1615 tag = *p++;
1616 memcpy(&len, p, sizeof(len));
1617 p += 4;
1618 len = getu32(swap, len);
1619 if (tag != 1) {
1620 if (elf_printf(ms, ", unknown gnu"
1621 " capability tag %d", tag)
1622 == -1)
1623 return -1;
1624 break;
1625 }
1626 // gnu attributes
1627 #endif
1628 break;
1629 }
1630 memcpy(xcap_addr, cbuf, xcap_sizeof);
1631 switch (xcap_tag) {
1632 case CA_SUNW_NULL:
1633 break;
1634 case CA_SUNW_HW_1:
1635 cap_hw1 |= xcap_val;
1636 break;
1637 case CA_SUNW_SF_1:
1638 cap_sf1 |= xcap_val;
1639 break;
1640 default:
1641 if (elf_printf(ms,
1642 ", with unknown capability "
1643 "%#" INT64_T_FORMAT "x = %#"
1644 INT64_T_FORMAT "x",
1645 CAST(unsigned long long, xcap_tag),
1646 CAST(unsigned long long, xcap_val))
1647 == -1)
1648 return -1;
1649 if (nbadcap++ > 2)
1650 goto skip;
1651 break;
1652 }
1653 }
1654 /*FALLTHROUGH*/
1655 skip:
1656 default:
1657 break;
1658 }
1659 }
1660
1661 if (has_debug_info) {
1662 if (elf_printf(ms, ", with debug_info") == -1)
1663 return -1;
1664 }
1665 if (elf_printf(ms, ", %sstripped", stripped ? "" : "not ") == -1)
1666 return -1;
1667 if (cap_hw1) {
1668 const cap_desc_t *cdp;
1669 switch (mach) {
1670 case EM_SPARC:
1671 case EM_SPARC32PLUS:
1672 case EM_SPARCV9:
1673 cdp = cap_desc_sparc;
1674 break;
1675 case EM_386:
1676 case EM_IA_64:
1677 case EM_AMD64:
1678 cdp = cap_desc_386;
1679 break;
1680 default:
1681 cdp = NULL;
1682 break;
1683 }
1684 if (elf_printf(ms, ", uses") == -1)
1685 return -1;
1686 if (cdp) {
1687 while (cdp->cd_name) {
1688 if (cap_hw1 & cdp->cd_mask) {
1689 if (elf_printf(ms,
1690 " %s", cdp->cd_name) == -1)
1691 return -1;
1692 cap_hw1 &= ~cdp->cd_mask;
1693 }
1694 ++cdp;
1695 }
1696 if (cap_hw1)
1697 if (elf_printf(ms,
1698 " unknown hardware capability %#"
1699 INT64_T_FORMAT "x",
1700 CAST(unsigned long long, cap_hw1)) == -1)
1701 return -1;
1702 } else {
1703 if (elf_printf(ms,
1704 " hardware capability %#" INT64_T_FORMAT "x",
1705 CAST(unsigned long long, cap_hw1)) == -1)
1706 return -1;
1707 }
1708 }
1709 if (cap_sf1) {
1710 if (cap_sf1 & SF1_SUNW_FPUSED) {
1711 if (elf_printf(ms,
1712 (cap_sf1 & SF1_SUNW_FPKNWN)
1713 ? ", uses frame pointer"
1714 : ", not known to use frame pointer") == -1)
1715 return -1;
1716 }
1717 cap_sf1 &= ~SF1_SUNW_MASK;
1718 if (cap_sf1)
1719 if (elf_printf(ms,
1720 ", with unknown software capability %#"
1721 INT64_T_FORMAT "x",
1722 CAST(unsigned long long, cap_sf1)) == -1)
1723 return -1;
1724 }
1725 return 0;
1726 }
1727
1728 /*
1729 * Look through the program headers of an executable image, to determine
1730 * if it is statically or dynamically linked. If it has a dynamic section,
1731 * it is pie, and does not have an interpreter or needed libraries, we
1732 * call it static pie.
1733 */
1734 file_private int
dophn_exec(struct magic_set * ms,int clazz,int swap,int fd,off_t off,int num,size_t size,off_t fsize,int sh_num,int * flags,uint16_t * notecount)1735 dophn_exec(struct magic_set *ms, int clazz, int swap, int fd, off_t off,
1736 int num, size_t size, off_t fsize, int sh_num, int *flags,
1737 uint16_t *notecount)
1738 {
1739 Elf32_Phdr ph32;
1740 Elf64_Phdr ph64;
1741 const char *str;
1742 unsigned char nbuf[NBUFSIZE];
1743 char interp[NBUFSIZE];
1744 ssize_t bufsize;
1745 size_t offset, align, need = 0;
1746 int pie = 0, dynamic = 0;
1747
1748 if (num == 0) {
1749 if (elf_printf(ms, ", no program header") == -1)
1750 return -1;
1751 return 0;
1752 }
1753 if (size != xph_sizeof) {
1754 if (elf_printf(ms, ", corrupted program header size") == -1)
1755 return -1;
1756 return 0;
1757 }
1758
1759 interp[0] = '\0';
1760 for ( ; num; num--) {
1761 int doread;
1762 if (pread(fd, xph_addr, xph_sizeof, off) <
1763 CAST(ssize_t, xph_sizeof)) {
1764 if (elf_printf(ms,
1765 ", can't read elf program headers at %jd",
1766 (intmax_t)off) == -1)
1767 return -1;
1768 return 0;
1769 }
1770
1771 off += size;
1772 bufsize = 0;
1773 align = 4;
1774
1775 /* Things we can determine before we seek */
1776 switch (xph_type) {
1777 case PT_DYNAMIC:
1778 doread = 1;
1779 break;
1780 case PT_NOTE:
1781 if (sh_num) /* Did this through section headers */
1782 continue;
1783 if (((align = xph_align) & 0x80000000UL) != 0 ||
1784 align < 4) {
1785 if (elf_printf(ms,
1786 ", invalid note alignment %#lx",
1787 CAST(unsigned long, align)) == -1)
1788 return -1;
1789 align = 4;
1790 }
1791 /*FALLTHROUGH*/
1792 case PT_INTERP:
1793 doread = 1;
1794 break;
1795 default:
1796 doread = 0;
1797 if (fsize != SIZE_UNKNOWN && xph_offset > fsize) {
1798 /* Maybe warn here? */
1799 continue;
1800 }
1801 break;
1802 }
1803
1804 if (doread) {
1805 size_t len = xph_filesz < sizeof(nbuf) ? xph_filesz
1806 : sizeof(nbuf);
1807 off_t offs = xph_offset;
1808 bufsize = pread(fd, nbuf, len, offs);
1809 if (bufsize == -1) {
1810 if (elf_printf(ms,
1811 ", can't read section at %jd",
1812 (intmax_t)offs) == -1)
1813 return -1;
1814 return 0;
1815 }
1816 }
1817
1818 /* Things we can determine when we seek */
1819 switch (xph_type) {
1820 case PT_DYNAMIC:
1821 dynamic = 1;
1822 offset = 0;
1823 // Let DF_1 determine if we are PIE or not.
1824 ms->mode &= ~0111;
1825 for (;;) {
1826 if (offset >= CAST(size_t, bufsize))
1827 break;
1828 offset = dodynamic(ms, nbuf, offset,
1829 CAST(size_t, bufsize), clazz, swap,
1830 &pie, &need);
1831 if (offset == 0)
1832 break;
1833 }
1834 break;
1835
1836 case PT_INTERP:
1837 need++;
1838 if (ms->flags & MAGIC_MIME)
1839 continue;
1840 if (bufsize && nbuf[0]) {
1841 nbuf[bufsize - 1] = '\0';
1842 str = CAST(const char *, nbuf);
1843 } else
1844 str = "*empty*";
1845 strlcpy(interp, str, sizeof(interp));
1846 break;
1847 case PT_NOTE:
1848 if (ms->flags & MAGIC_MIME)
1849 return 0;
1850 /*
1851 * This is a PT_NOTE section; loop through all the notes
1852 * in the section.
1853 */
1854 offset = 0;
1855 for (;;) {
1856 if (offset >= CAST(size_t, bufsize))
1857 break;
1858 offset = donote(ms, nbuf, offset,
1859 CAST(size_t, bufsize), clazz, swap, align,
1860 flags, notecount, fd, 0, 0, 0);
1861 if (offset == 0)
1862 break;
1863 }
1864 break;
1865 default:
1866 if (ms->flags & MAGIC_MIME)
1867 continue;
1868 break;
1869 }
1870 }
1871 if (ms->flags & MAGIC_MIME)
1872 return 0;
1873 if (dynamic) {
1874 if (pie && need == 0)
1875 str = "static-pie";
1876 else
1877 str = "dynamically";
1878 } else {
1879 str = "statically";
1880 }
1881 if (elf_printf(ms, ", %s linked", str) == -1)
1882 return -1;
1883 if (interp[0])
1884 if (elf_printf(ms, ", interpreter %s", file_printable(ms,
1885 RCAST(char *, nbuf), sizeof(nbuf),
1886 interp, sizeof(interp))) == -1)
1887 return -1;
1888 return 0;
1889 }
1890
1891
1892 file_protected int
file_tryelf(struct magic_set * ms,const struct buffer * b)1893 file_tryelf(struct magic_set *ms, const struct buffer *b)
1894 {
1895 int fd = b->fd;
1896 const unsigned char *buf = CAST(const unsigned char *, b->fbuf);
1897 size_t nbytes = b->flen;
1898 union {
1899 int32_t l;
1900 char c[sizeof(int32_t)];
1901 } u;
1902 int clazz;
1903 int swap;
1904 struct stat st;
1905 const struct stat *stp;
1906 off_t fsize;
1907 int flags = 0;
1908 Elf32_Ehdr elf32hdr;
1909 Elf64_Ehdr elf64hdr;
1910 uint16_t type, phnum, shnum, notecount;
1911
1912 if (ms->flags & (MAGIC_APPLE|MAGIC_EXTENSION))
1913 return 0;
1914 /*
1915 * ELF executables have multiple section headers in arbitrary
1916 * file locations and thus file(1) cannot determine it from easily.
1917 * Instead we traverse thru all section headers until a symbol table
1918 * one is found or else the binary is stripped.
1919 * Return immediately if it's not ELF (so we avoid pipe2file unless
1920 * needed).
1921 */
1922 if (buf[EI_MAG0] != ELFMAG0
1923 || (buf[EI_MAG1] != ELFMAG1 && buf[EI_MAG1] != OLFMAG1)
1924 || buf[EI_MAG2] != ELFMAG2 || buf[EI_MAG3] != ELFMAG3)
1925 return 0;
1926
1927 /*
1928 * If we cannot seek, it must be a pipe, socket or fifo.
1929 */
1930 if((lseek(fd, CAST(off_t, 0), SEEK_SET) == CAST(off_t, -1))
1931 && (errno == ESPIPE))
1932 fd = file_pipe2file(ms, fd, buf, nbytes);
1933
1934 if (fd == -1) {
1935 file_badread(ms);
1936 return -1;
1937 }
1938
1939 stp = &b->st;
1940 /*
1941 * b->st.st_size != 0 if previous fstat() succeeded,
1942 * which is likely, we can avoid extra stat() call.
1943 */
1944 if (b->st.st_size == 0) {
1945 stp = &st;
1946 if (fstat(fd, &st) == -1) {
1947 file_badread(ms);
1948 return -1;
1949 }
1950 }
1951 if (S_ISREG(stp->st_mode) || stp->st_size != 0)
1952 fsize = stp->st_size;
1953 else
1954 fsize = SIZE_UNKNOWN;
1955
1956 clazz = buf[EI_CLASS];
1957
1958 switch (clazz) {
1959 case ELFCLASS32:
1960 #undef elf_getu
1961 #define elf_getu(a, b) elf_getu32(a, b)
1962 #undef elfhdr
1963 #define elfhdr elf32hdr
1964 #include "elfclass.h"
1965 case ELFCLASS64:
1966 #undef elf_getu
1967 #define elf_getu(a, b) elf_getu64(a, b)
1968 #undef elfhdr
1969 #define elfhdr elf64hdr
1970 #include "elfclass.h"
1971 default:
1972 if (elf_printf(ms, ", unknown class %d", clazz) == -1)
1973 return -1;
1974 break;
1975 }
1976 return 0;
1977 }
1978 #endif
1979