contrib/file/src/readelf.c

   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 1.102 2014/03/11 21:00:13 christos Exp $")
  31 #endif
  32
  33 #ifdef BUILTIN_ELF
  34 #include <string.h>
  35 #include <ctype.h>
  36 #include <stdlib.h>
  37 #ifdef HAVE_UNISTD_H
  38 #include <unistd.h>
  39 #endif
  40
  41 #include "readelf.h"
  42 #include "magic.h"
  43
  44 #ifdef  ELFCORE
  45 private int dophn_core(struct magic_set *, int, int, int, off_t, int, size_t,
  46     off_t, int *);
  47 #endif
  48 private int dophn_exec(struct magic_set *, int, int, int, off_t, int, size_t,
  49     off_t, int *, int);
  50 private int doshn(struct magic_set *, int, int, int, off_t, int, size_t,
  51     off_t, int *, int, int);
  52 private size_t donote(struct magic_set *, void *, size_t, size_t, int,
  53     int, size_t, int *);
  54
  55 #define ELF_ALIGN(a)    ((((a) + align - 1) / align) * align)
  56
  57 #define isquote(c) (strchr("'\"`", (c)) != NULL)
  58
  59 private uint16_t getu16(int, uint16_t);
  60 private uint32_t getu32(int, uint32_t);
  61 private uint64_t getu64(int, uint64_t);
  62
  63 private uint16_t
  64 getu16(int swap, uint16_t value)
  65 {
  66         union {
  67                 uint16_t ui;
  68                 char c[2];
  69         } retval, tmpval;
  70
  71         if (swap) {
  72                 tmpval.ui = value;
  73
  74                 retval.c[0] = tmpval.c[1];
  75                 retval.c[1] = tmpval.c[0];
  76
  77                 return retval.ui;
  78         } else
  79                 return value;
  80 }
  81
  82 private uint32_t
  83 getu32(int swap, uint32_t value)
  84 {
  85         union {
  86                 uint32_t ui;
  87                 char c[4];
  88         } retval, tmpval;
  89
  90         if (swap) {
  91                 tmpval.ui = value;
  92
  93                 retval.c[0] = tmpval.c[3];
  94                 retval.c[1] = tmpval.c[2];
  95                 retval.c[2] = tmpval.c[1];
  96                 retval.c[3] = tmpval.c[0];
  97
  98                 return retval.ui;
  99         } else
 100                 return value;
 101 }
 102
 103 private uint64_t
 104 getu64(int swap, uint64_t value)
 105 {
 106         union {
 107                 uint64_t ui;
 108                 char c[8];
 109         } retval, tmpval;
 110
 111         if (swap) {
 112                 tmpval.ui = value;
 113
 114                 retval.c[0] = tmpval.c[7];
 115                 retval.c[1] = tmpval.c[6];
 116                 retval.c[2] = tmpval.c[5];
 117                 retval.c[3] = tmpval.c[4];
 118                 retval.c[4] = tmpval.c[3];
 119                 retval.c[5] = tmpval.c[2];
 120                 retval.c[6] = tmpval.c[1];
 121                 retval.c[7] = tmpval.c[0];
 122
 123                 return retval.ui;
 124         } else
 125                 return value;
 126 }
 127
 128 #define elf_getu16(swap, value) getu16(swap, value)
 129 #define elf_getu32(swap, value) getu32(swap, value)
 130 #define elf_getu64(swap, value) getu64(swap, value)
 131
 132 #define xsh_addr        (clazz == ELFCLASS32                    \
 133                          ? (void *)&sh32                        \
 134                          : (void *)&sh64)
 135 #define xsh_sizeof      (clazz == ELFCLASS32                    \
 136                          ? sizeof(sh32)                         \
 137                          : sizeof(sh64))
 138 #define xsh_size        (size_t)(clazz == ELFCLASS32            \
 139                          ? elf_getu32(swap, sh32.sh_size)       \
 140                          : elf_getu64(swap, sh64.sh_size))
 141 #define xsh_offset      (off_t)(clazz == ELFCLASS32             \
 142                          ? elf_getu32(swap, sh32.sh_offset)     \
 143                          : elf_getu64(swap, sh64.sh_offset))
 144 #define xsh_type        (clazz == ELFCLASS32                    \
 145                          ? elf_getu32(swap, sh32.sh_type)       \
 146                          : elf_getu32(swap, sh64.sh_type))
 147 #define xsh_name        (clazz == ELFCLASS32                    \
 148                          ? elf_getu32(swap, sh32.sh_name)       \
 149                          : elf_getu32(swap, sh64.sh_name))
 150 #define xph_addr        (clazz == ELFCLASS32                    \
 151                          ? (void *) &ph32                       \
 152                          : (void *) &ph64)
 153 #define xph_sizeof      (clazz == ELFCLASS32                    \
 154                          ? sizeof(ph32)                         \
 155                          : sizeof(ph64))
 156 #define xph_type        (clazz == ELFCLASS32                    \
 157                          ? elf_getu32(swap, ph32.p_type)        \
 158                          : elf_getu32(swap, ph64.p_type))
 159 #define xph_offset      (off_t)(clazz == ELFCLASS32             \
 160                          ? elf_getu32(swap, ph32.p_offset)      \
 161                          : elf_getu64(swap, ph64.p_offset))
 162 #define xph_align       (size_t)((clazz == ELFCLASS32           \
 163                          ? (off_t) (ph32.p_align ?              \
 164                             elf_getu32(swap, ph32.p_align) : 4) \
 165                          : (off_t) (ph64.p_align ?              \
 166                             elf_getu64(swap, ph64.p_align) : 4)))
 167 #define xph_filesz      (size_t)((clazz == ELFCLASS32           \
 168                          ? elf_getu32(swap, ph32.p_filesz)      \
 169                          : elf_getu64(swap, ph64.p_filesz)))
 170 #define xnh_addr        (clazz == ELFCLASS32                    \
 171                          ? (void *)&nh32                        \
 172                          : (void *)&nh64)
 173 #define xph_memsz       (size_t)((clazz == ELFCLASS32           \
 174                          ? elf_getu32(swap, ph32.p_memsz)       \
 175                          : elf_getu64(swap, ph64.p_memsz)))
 176 #define xnh_sizeof      (clazz == ELFCLASS32                    \
 177                          ? sizeof nh32                          \
 178                          : sizeof nh64)
 179 #define xnh_type        (clazz == ELFCLASS32                    \
 180                          ? elf_getu32(swap, nh32.n_type)        \
 181                          : elf_getu32(swap, nh64.n_type))
 182 #define xnh_namesz      (clazz == ELFCLASS32                    \
 183                          ? elf_getu32(swap, nh32.n_namesz)      \
 184                          : elf_getu32(swap, nh64.n_namesz))
 185 #define xnh_descsz      (clazz == ELFCLASS32                    \
 186                          ? elf_getu32(swap, nh32.n_descsz)      \
 187                          : elf_getu32(swap, nh64.n_descsz))
 188 #define prpsoffsets(i)  (clazz == ELFCLASS32                    \
 189                          ? prpsoffsets32[i]                     \
 190                          : prpsoffsets64[i])
 191 #define xcap_addr       (clazz == ELFCLASS32                    \
 192                          ? (void *)&cap32                       \
 193                          : (void *)&cap64)
 194 #define xcap_sizeof     (clazz == ELFCLASS32                    \
 195                          ? sizeof cap32                         \
 196                          : sizeof cap64)
 197 #define xcap_tag        (clazz == ELFCLASS32                    \
 198                          ? elf_getu32(swap, cap32.c_tag)        \
 199                          : elf_getu64(swap, cap64.c_tag))
 200 #define xcap_val        (clazz == ELFCLASS32                    \
 201                          ? elf_getu32(swap, cap32.c_un.c_val)   \
 202                          : elf_getu64(swap, cap64.c_un.c_val))
 203
 204 #ifdef ELFCORE
 205 /*
 206  * Try larger offsets first to avoid false matches
 207  * from earlier data that happen to look like strings.
 208  */
 209 static const size_t     prpsoffsets32[] = {
 210 #ifdef USE_NT_PSINFO
 211         104,            /* SunOS 5.x (command line) */
 212         88,             /* SunOS 5.x (short name) */
 213 #endif /* USE_NT_PSINFO */
 214
 215         100,            /* SunOS 5.x (command line) */
 216         84,             /* SunOS 5.x (short name) */
 217
 218         44,             /* Linux (command line) */
 219         28,             /* Linux 2.0.36 (short name) */
 220
 221         8,              /* FreeBSD */
 222 };
 223
 224 static const size_t     prpsoffsets64[] = {
 225 #ifdef USE_NT_PSINFO
 226         152,            /* SunOS 5.x (command line) */
 227         136,            /* SunOS 5.x (short name) */
 228 #endif /* USE_NT_PSINFO */
 229
 230         136,            /* SunOS 5.x, 64-bit (command line) */
 231         120,            /* SunOS 5.x, 64-bit (short name) */
 232
 233         56,             /* Linux (command line) */
 234         40,             /* Linux (tested on core from 2.4.x, short name) */
 235
 236         16,             /* FreeBSD, 64-bit */
 237 };
 238
 239 #define NOFFSETS32      (sizeof prpsoffsets32 / sizeof prpsoffsets32[0])
 240 #define NOFFSETS64      (sizeof prpsoffsets64 / sizeof prpsoffsets64[0])
 241
 242 #define NOFFSETS        (clazz == ELFCLASS32 ? NOFFSETS32 : NOFFSETS64)
 243
 244 /*
 245  * Look through the program headers of an executable image, searching
 246  * for a PT_NOTE section of type NT_PRPSINFO, with a name "CORE" or
 247  * "FreeBSD"; if one is found, try looking in various places in its
 248  * contents for a 16-character string containing only printable
 249  * characters - if found, that string should be the name of the program
 250  * that dropped core.  Note: right after that 16-character string is,
 251  * at least in SunOS 5.x (and possibly other SVR4-flavored systems) and
 252  * Linux, a longer string (80 characters, in 5.x, probably other
 253  * SVR4-flavored systems, and Linux) containing the start of the
 254  * command line for that program.
 255  *
 256  * SunOS 5.x core files contain two PT_NOTE sections, with the types
 257  * NT_PRPSINFO (old) and NT_PSINFO (new).  These structs contain the
 258  * same info about the command name and command line, so it probably
 259  * isn't worthwhile to look for NT_PSINFO, but the offsets are provided
 260  * above (see USE_NT_PSINFO), in case we ever decide to do so.  The
 261  * NT_PRPSINFO and NT_PSINFO sections are always in order and adjacent;
 262  * the SunOS 5.x file command relies on this (and prefers the latter).
 263  *
 264  * The signal number probably appears in a section of type NT_PRSTATUS,
 265  * but that's also rather OS-dependent, in ways that are harder to
 266  * dissect with heuristics, so I'm not bothering with the signal number.
 267  * (I suppose the signal number could be of interest in situations where
 268  * you don't have the binary of the program that dropped core; if you
 269  * *do* have that binary, the debugger will probably tell you what
 270  * signal it was.)
 271  */
 272
 273 #define OS_STYLE_SVR4           0
 274 #define OS_STYLE_FREEBSD        1
 275 #define OS_STYLE_NETBSD         2
 276
 277 private const char os_style_names[][8] = {
 278         "SVR4",
 279         "FreeBSD",
 280         "NetBSD",
 281 };
 282
 283 #define FLAGS_DID_CORE          0x01
 284 #define FLAGS_DID_NOTE          0x02
 285 #define FLAGS_DID_BUILD_ID      0x04
 286 #define FLAGS_DID_CORE_STYLE    0x08
 287 #define FLAGS_IS_CORE           0x10
 288
 289 private int
 290 dophn_core(struct magic_set *ms, int clazz, int swap, int fd, off_t off,
 291     int num, size_t size, off_t fsize, int *flags)
 292 {
 293         Elf32_Phdr ph32;
 294         Elf64_Phdr ph64;
 295         size_t offset, len;
 296         unsigned char nbuf[BUFSIZ];
 297         ssize_t bufsize;
 298
 299         if (size != xph_sizeof) {
 300                 if (file_printf(ms, ", corrupted program header size") == -1)
 301                         return -1;
 302                 return 0;
 303         }
 304
 305         /*
 306          * Loop through all the program headers.
 307          */
 308         for ( ; num; num--) {
 309                 if (pread(fd, xph_addr, xph_sizeof, off) == -1) {
 310                         file_badread(ms);
 311                         return -1;
 312                 }
 313                 off += size;
 314
 315                 if (xph_offset > fsize) {
 316                         /* Perhaps warn here */
 317                         continue;
 318                 }
 319
 320                 if (xph_type != PT_NOTE)
 321                         continue;
 322
 323                 /*
 324                  * This is a PT_NOTE section; loop through all the notes
 325                  * in the section.
 326                  */
 327                 len = xph_filesz < sizeof(nbuf) ? xph_filesz : sizeof(nbuf);
 328                 if ((bufsize = pread(fd, nbuf, len, xph_offset)) == -1) {
 329                         file_badread(ms);
 330                         return -1;
 331                 }
 332                 offset = 0;
 333                 for (;;) {
 334                         if (offset >= (size_t)bufsize)
 335                                 break;
 336                         offset = donote(ms, nbuf, offset, (size_t)bufsize,
 337                             clazz, swap, 4, flags);
 338                         if (offset == 0)
 339                                 break;
 340
 341                 }
 342         }
 343         return 0;
 344 }
 345 #endif
 346
 347 static void
 348 do_note_netbsd_version(struct magic_set *ms, int swap, void *v)
 349 {
 350         uint32_t desc;
 351         (void)memcpy(&desc, v, sizeof(desc));
 352         desc = elf_getu32(swap, desc);
 353
 354         if (file_printf(ms, ", for NetBSD") == -1)
 355                 return;
 356         /*
 357          * The version number used to be stuck as 199905, and was thus
 358          * basically content-free.  Newer versions of NetBSD have fixed
 359          * this and now use the encoding of __NetBSD_Version__:
 360          *
 361          *      MMmmrrpp00
 362          *
 363          * M = major version
 364          * m = minor version
 365          * r = release ["",A-Z,Z[A-Z] but numeric]
 366          * p = patchlevel
 367          */
 368         if (desc > 100000000U) {
 369                 uint32_t ver_patch = (desc / 100) % 100;
 370                 uint32_t ver_rel = (desc / 10000) % 100;
 371                 uint32_t ver_min = (desc / 1000000) % 100;
 372                 uint32_t ver_maj = desc / 100000000;
 373
 374                 if (file_printf(ms, " %u.%u", ver_maj, ver_min) == -1)
 375                         return;
 376                 if (ver_rel == 0 && ver_patch != 0) {
 377                         if (file_printf(ms, ".%u", ver_patch) == -1)
 378                                 return;
 379                 } else if (ver_rel != 0) {
 380                         while (ver_rel > 26) {
 381                                 if (file_printf(ms, "Z") == -1)
 382                                         return;
 383                                 ver_rel -= 26;
 384                         }
 385                         if (file_printf(ms, "%c", 'A' + ver_rel - 1)
 386                             == -1)
 387                                 return;
 388                 }
 389         }
 390 }
 391
 392 static void
 393 do_note_freebsd_version(struct magic_set *ms, int swap, void *v)
 394 {
 395         uint32_t desc;
 396
 397         (void)memcpy(&desc, v, sizeof(desc));
 398         desc = elf_getu32(swap, desc);
 399         if (file_printf(ms, ", for FreeBSD") == -1)
 400                 return;
 401
 402         /*
 403          * Contents is __FreeBSD_version, whose relation to OS
 404          * versions is defined by a huge table in the Porter's
 405          * Handbook.  This is the general scheme:
 406          *
 407          * Releases:
 408          *      Mmp000 (before 4.10)
 409          *      Mmi0p0 (before 5.0)
 410          *      Mmm0p0
 411          *
 412          * Development branches:
 413          *      Mmpxxx (before 4.6)
 414          *      Mmp1xx (before 4.10)
 415          *      Mmi1xx (before 5.0)
 416          *      M000xx (pre-M.0)
 417          *      Mmm1xx
 418          *
 419          * M = major version
 420          * m = minor version
 421          * i = minor version increment (491000 -> 4.10)
 422          * p = patchlevel
 423          * x = revision
 424          *
 425          * The first release of FreeBSD to use ELF by default
 426          * was version 3.0.
 427          */
 428         if (desc == 460002) {
 429                 if (file_printf(ms, " 4.6.2") == -1)
 430                         return;
 431         } else if (desc < 460100) {
 432                 if (file_printf(ms, " %d.%d", desc / 100000,
 433                     desc / 10000 % 10) == -1)
 434                         return;
 435                 if (desc / 1000 % 10 > 0)
 436                         if (file_printf(ms, ".%d", desc / 1000 % 10) == -1)
 437                                 return;
 438                 if ((desc % 1000 > 0) || (desc % 100000 == 0))
 439                         if (file_printf(ms, " (%d)", desc) == -1)
 440                                 return;
 441         } else if (desc < 500000) {
 442                 if (file_printf(ms, " %d.%d", desc / 100000,
 443                     desc / 10000 % 10 + desc / 1000 % 10) == -1)
 444                         return;
 445                 if (desc / 100 % 10 > 0) {
 446                         if (file_printf(ms, " (%d)", desc) == -1)
 447                                 return;
 448                 } else if (desc / 10 % 10 > 0) {
 449                         if (file_printf(ms, ".%d", desc / 10 % 10) == -1)
 450                                 return;
 451                 }
 452         } else {
 453                 if (file_printf(ms, " %d.%d", desc / 100000,
 454                     desc / 1000 % 100) == -1)
 455                         return;
 456                 if ((desc / 100 % 10 > 0) ||
 457                     (desc % 100000 / 100 == 0)) {
 458                         if (file_printf(ms, " (%d)", desc) == -1)
 459                                 return;
 460                 } else if (desc / 10 % 10 > 0) {
 461                         if (file_printf(ms, ".%d", desc / 10 % 10) == -1)
 462                                 return;
 463                 }
 464         }
 465 }
 466
 467 private size_t
 468 donote(struct magic_set *ms, void *vbuf, size_t offset, size_t size,
 469     int clazz, int swap, size_t align, int *flags)
 470 {
 471         Elf32_Nhdr nh32;
 472         Elf64_Nhdr nh64;
 473         size_t noff, doff;
 474 #ifdef ELFCORE
 475         int os_style = -1;
 476 #endif
 477         uint32_t namesz, descsz;
 478         unsigned char *nbuf = CAST(unsigned char *, vbuf);
 479
 480         (void)memcpy(xnh_addr, &nbuf[offset], xnh_sizeof);
 481         offset += xnh_sizeof;
 482
 483         namesz = xnh_namesz;
 484         descsz = xnh_descsz;
 485         if ((namesz == 0) && (descsz == 0)) {
 486                 /*
 487                  * We're out of note headers.
 488                  */
 489                 return (offset >= size) ? offset : size;
 490         }
 491
 492         if (namesz & 0x80000000) {
 493             (void)file_printf(ms, ", bad note name size 0x%lx",
 494                 (unsigned long)namesz);
 495             return offset;
 496         }
 497
 498         if (descsz & 0x80000000) {
 499             (void)file_printf(ms, ", bad note description size 0x%lx",
 500                 (unsigned long)descsz);
 501             return offset;
 502         }
 503
 504
 505         noff = offset;
 506         doff = ELF_ALIGN(offset + namesz);
 507
 508         if (offset + namesz > size) {
 509                 /*
 510                  * We're past the end of the buffer.
 511                  */
 512                 return doff;
 513         }
 514
 515         offset = ELF_ALIGN(doff + descsz);
 516         if (doff + descsz > size) {
 517                 /*
 518                  * We're past the end of the buffer.
 519                  */
 520                 return (offset >= size) ? offset : size;
 521         }
 522
 523         if ((*flags & (FLAGS_DID_NOTE|FLAGS_DID_BUILD_ID)) ==
 524             (FLAGS_DID_NOTE|FLAGS_DID_BUILD_ID))
 525                 goto core;
 526
 527         if (namesz == 5 && strcmp((char *)&nbuf[noff], "SuSE") == 0 &&
 528             xnh_type == NT_GNU_VERSION && descsz == 2) {
 529             file_printf(ms, ", for SuSE %d.%d", nbuf[doff], nbuf[doff + 1]);
 530         }
 531         if (namesz == 4 && strcmp((char *)&nbuf[noff], "GNU") == 0 &&
 532             xnh_type == NT_GNU_VERSION && descsz == 16) {
 533                 uint32_t desc[4];
 534                 (void)memcpy(desc, &nbuf[doff], sizeof(desc));
 535
 536                 if (file_printf(ms, ", for GNU/") == -1)
 537                         return size;
 538                 switch (elf_getu32(swap, desc[0])) {
 539                 case GNU_OS_LINUX:
 540                         if (file_printf(ms, "Linux") == -1)
 541                                 return size;
 542                         break;
 543                 case GNU_OS_HURD:
 544                         if (file_printf(ms, "Hurd") == -1)
 545                                 return size;
 546                         break;
 547                 case GNU_OS_SOLARIS:
 548                         if (file_printf(ms, "Solaris") == -1)
 549                                 return size;
 550                         break;
 551                 case GNU_OS_KFREEBSD:
 552                         if (file_printf(ms, "kFreeBSD") == -1)
 553                                 return size;
 554                         break;
 555                 case GNU_OS_KNETBSD:
 556                         if (file_printf(ms, "kNetBSD") == -1)
 557                                 return size;
 558                         break;
 559                 default:
 560                         if (file_printf(ms, "<unknown>") == -1)
 561                                 return size;
 562                 }
 563                 if (file_printf(ms, " %d.%d.%d", elf_getu32(swap, desc[1]),
 564                     elf_getu32(swap, desc[2]), elf_getu32(swap, desc[3])) == -1)
 565                         return size;
 566                 *flags |= FLAGS_DID_NOTE;
 567                 return size;
 568         }
 569
 570         if (namesz == 4 && strcmp((char *)&nbuf[noff], "GNU") == 0 &&
 571             xnh_type == NT_GNU_BUILD_ID && (descsz == 16 || descsz == 20)) {
 572             uint8_t desc[20];
 573             uint32_t i;
 574             if (file_printf(ms, ", BuildID[%s]=", descsz == 16 ? "md5/uuid" :
 575                 "sha1") == -1)
 576                     return size;
 577             (void)memcpy(desc, &nbuf[doff], descsz);
 578             for (i = 0; i < descsz; i++)
 579                 if (file_printf(ms, "%02x", desc[i]) == -1)
 580                     return size;
 581             *flags |= FLAGS_DID_BUILD_ID;
 582         }
 583
 584         if (namesz == 4 && strcmp((char *)&nbuf[noff], "PaX") == 0 &&
 585             xnh_type == NT_NETBSD_PAX && descsz == 4) {
 586                 static const char *pax[] = {
 587                     "+mprotect",
 588                     "-mprotect",
 589                     "+segvguard",
 590                     "-segvguard",
 591                     "+ASLR",
 592                     "-ASLR",
 593                 };
 594                 uint32_t desc;
 595                 size_t i;
 596                 int did = 0;
 597
 598                 (void)memcpy(&desc, &nbuf[doff], sizeof(desc));
 599                 desc = elf_getu32(swap, desc);
 600
 601                 if (desc && file_printf(ms, ", PaX: ") == -1)
 602                         return size;
 603
 604                 for (i = 0; i < __arraycount(pax); i++) {
 605                         if (((1 << i) & desc) == 0)
 606                                 continue;
 607                         if (file_printf(ms, "%s%s", did++ ? "," : "",
 608                             pax[i]) == -1)
 609                                 return size;
 610                 }
 611         }
 612
 613         if (namesz == 7 && strcmp((char *)&nbuf[noff], "NetBSD") == 0) {
 614                 switch (xnh_type) {
 615                 case NT_NETBSD_VERSION:
 616                         if (descsz == 4) {
 617                                 do_note_netbsd_version(ms, swap, &nbuf[doff]);
 618                                 *flags |= FLAGS_DID_NOTE;
 619                                 return size;
 620                         }
 621                         break;
 622                 case NT_NETBSD_MARCH:
 623                         if (file_printf(ms, ", compiled for: %.*s", (int)descsz,
 624                             (const char *)&nbuf[doff]) == -1)
 625                                 return size;
 626                         break;
 627                 case NT_NETBSD_CMODEL:
 628                         if (file_printf(ms, ", compiler model: %.*s",
 629                             (int)descsz, (const char *)&nbuf[doff]) == -1)
 630                                 return size;
 631                         break;
 632                 default:
 633                         if (file_printf(ms, ", note=%u", xnh_type) == -1)
 634                                 return size;
 635                         break;
 636                 }
 637                 return size;
 638         }
 639
 640         if (namesz == 8 && strcmp((char *)&nbuf[noff], "FreeBSD") == 0) {
 641                 if (xnh_type == NT_FREEBSD_VERSION && descsz == 4) {
 642                         do_note_freebsd_version(ms, swap, &nbuf[doff]);
 643                         *flags |= FLAGS_DID_NOTE;
 644                         return size;
 645                 }
 646         }
 647
 648         if (namesz == 8 && strcmp((char *)&nbuf[noff], "OpenBSD") == 0 &&
 649             xnh_type == NT_OPENBSD_VERSION && descsz == 4) {
 650                 if (file_printf(ms, ", for OpenBSD") == -1)
 651                         return size;
 652                 /* Content of note is always 0 */
 653                 *flags |= FLAGS_DID_NOTE;
 654                 return size;
 655         }
 656
 657         if (namesz == 10 && strcmp((char *)&nbuf[noff], "DragonFly") == 0 &&
 658             xnh_type == NT_DRAGONFLY_VERSION && descsz == 4) {
 659                 uint32_t desc;
 660                 if (file_printf(ms, ", for DragonFly") == -1)
 661                         return size;
 662                 (void)memcpy(&desc, &nbuf[doff], sizeof(desc));
 663                 desc = elf_getu32(swap, desc);
 664                 if (file_printf(ms, " %d.%d.%d", desc / 100000,
 665                     desc / 10000 % 10, desc % 10000) == -1)
 666                         return size;
 667                 *flags |= FLAGS_DID_NOTE;
 668                 return size;
 669         }
 670
 671 core:
 672         /*
 673          * Sigh.  The 2.0.36 kernel in Debian 2.1, at
 674          * least, doesn't correctly implement name
 675          * sections, in core dumps, as specified by
 676          * the "Program Linking" section of "UNIX(R) System
 677          * V Release 4 Programmer's Guide: ANSI C and
 678          * Programming Support Tools", because my copy
 679          * clearly says "The first 'namesz' bytes in 'name'
 680          * contain a *null-terminated* [emphasis mine]
 681          * character representation of the entry's owner
 682          * or originator", but the 2.0.36 kernel code
 683          * doesn't include the terminating null in the
 684          * name....
 685          */
 686         if ((namesz == 4 && strncmp((char *)&nbuf[noff], "CORE", 4) == 0) ||
 687             (namesz == 5 && strcmp((char *)&nbuf[noff], "CORE") == 0)) {
 688                 os_style = OS_STYLE_SVR4;
 689         }
 690
 691         if ((namesz == 8 && strcmp((char *)&nbuf[noff], "FreeBSD") == 0)) {
 692                 os_style = OS_STYLE_FREEBSD;
 693         }
 694
 695         if ((namesz >= 11 && strncmp((char *)&nbuf[noff], "NetBSD-CORE", 11)
 696             == 0)) {
 697                 os_style = OS_STYLE_NETBSD;
 698         }
 699
 700 #ifdef ELFCORE
 701         if ((*flags & FLAGS_DID_CORE) != 0)
 702                 return size;
 703
 704         if (os_style != -1 && (*flags & FLAGS_DID_CORE_STYLE) == 0) {
 705                 if (file_printf(ms, ", %s-style", os_style_names[os_style])
 706                     == -1)
 707                         return size;
 708                 *flags |= FLAGS_DID_CORE_STYLE;
 709         }
 710
 711         switch (os_style) {
 712         case OS_STYLE_NETBSD:
 713                 if (xnh_type == NT_NETBSD_CORE_PROCINFO) {
 714                         uint32_t signo;
 715                         /*
 716                          * Extract the program name.  It is at
 717                          * offset 0x7c, and is up to 32-bytes,
 718                          * including the terminating NUL.
 719                          */
 720                         if (file_printf(ms, ", from '%.31s'",
 721                             &nbuf[doff + 0x7c]) == -1)
 722                                 return size;
 723
 724                         /*
 725                          * Extract the signal number.  It is at
 726                          * offset 0x08.
 727                          */
 728                         (void)memcpy(&signo, &nbuf[doff + 0x08],
 729                             sizeof(signo));
 730                         if (file_printf(ms, " (signal %u)",
 731                             elf_getu32(swap, signo)) == -1)
 732                                 return size;
 733                         *flags |= FLAGS_DID_CORE;
 734                         return size;
 735                 }
 736                 break;
 737
 738         default:
 739                 if (xnh_type == NT_PRPSINFO && *flags & FLAGS_IS_CORE) {
 740                         size_t i, j;
 741                         unsigned char c;
 742                         /*
 743                          * Extract the program name.  We assume
 744                          * it to be 16 characters (that's what it
 745                          * is in SunOS 5.x and Linux).
 746                          *
 747                          * Unfortunately, it's at a different offset
 748                          * in various OSes, so try multiple offsets.
 749                          * If the characters aren't all printable,
 750                          * reject it.
 751                          */
 752                         for (i = 0; i < NOFFSETS; i++) {
 753                                 unsigned char *cname, *cp;
 754                                 size_t reloffset = prpsoffsets(i);
 755                                 size_t noffset = doff + reloffset;
 756                                 size_t k;
 757                                 for (j = 0; j < 16; j++, noffset++,
 758                                     reloffset++) {
 759                                         /*
 760                                          * Make sure we're not past
 761                                          * the end of the buffer; if
 762                                          * we are, just give up.
 763                                          */
 764                                         if (noffset >= size)
 765                                                 goto tryanother;
 766
 767                                         /*
 768                                          * Make sure we're not past
 769                                          * the end of the contents;
 770                                          * if we are, this obviously
 771                                          * isn't the right offset.
 772                                          */
 773                                         if (reloffset >= descsz)
 774                                                 goto tryanother;
 775
 776                                         c = nbuf[noffset];
 777                                         if (c == '\0') {
 778                                                 /*
 779                                                  * A '\0' at the
 780                                                  * beginning is
 781                                                  * obviously wrong.
 782                                                  * Any other '\0'
 783                                                  * means we're done.
 784                                                  */
 785                                                 if (j == 0)
 786                                                         goto tryanother;
 787                                                 else
 788                                                         break;
 789                                         } else {
 790                                                 /*
 791                                                  * A nonprintable
 792                                                  * character is also
 793                                                  * wrong.
 794                                                  */
 795                                                 if (!isprint(c) || isquote(c))
 796                                                         goto tryanother;
 797                                         }
 798                                 }
 799                                 /*
 800                                  * Well, that worked.
 801                                  */
 802
 803                                 /*
 804                                  * Try next offsets, in case this match is
 805                                  * in the middle of a string.
 806                                  */
 807                                 for (k = i + 1 ; k < NOFFSETS ; k++) {
 808                                         size_t no;
 809                                         int adjust = 1;
 810                                         if (prpsoffsets(k) >= prpsoffsets(i))
 811                                                 continue;
 812                                         for (no = doff + prpsoffsets(k);
 813                                              no < doff + prpsoffsets(i); no++)
 814                                                 adjust = adjust
 815                                                          && isprint(nbuf[no]);
 816                                         if (adjust)
 817                                                 i = k;
 818                                 }
 819
 820                                 cname = (unsigned char *)
 821                                     &nbuf[doff + prpsoffsets(i)];
 822                                 for (cp = cname; *cp && isprint(*cp); cp++)
 823                                         continue;
 824                                 /*
 825                                  * Linux apparently appends a space at the end
 826                                  * of the command line: remove it.
 827                                  */
 828                                 while (cp > cname && isspace(cp[-1]))
 829                                         cp--;
 830                                 if (file_printf(ms, ", from '%.*s'",
 831                                     (int)(cp - cname), cname) == -1)
 832                                         return size;
 833                                 *flags |= FLAGS_DID_CORE;
 834                                 return size;
 835
 836                         tryanother:
 837                                 ;
 838                         }
 839                 }
 840                 break;
 841         }
 842 #endif
 843         return offset;
 844 }
 845
 846 /* SunOS 5.x hardware capability descriptions */
 847 typedef struct cap_desc {
 848         uint64_t cd_mask;
 849         const char *cd_name;
 850 } cap_desc_t;
 851
 852 static const cap_desc_t cap_desc_sparc[] = {
 853         { AV_SPARC_MUL32,               "MUL32" },
 854         { AV_SPARC_DIV32,               "DIV32" },
 855         { AV_SPARC_FSMULD,              "FSMULD" },
 856         { AV_SPARC_V8PLUS,              "V8PLUS" },
 857         { AV_SPARC_POPC,                "POPC" },
 858         { AV_SPARC_VIS,                 "VIS" },
 859         { AV_SPARC_VIS2,                "VIS2" },
 860         { AV_SPARC_ASI_BLK_INIT,        "ASI_BLK_INIT" },
 861         { AV_SPARC_FMAF,                "FMAF" },
 862         { AV_SPARC_FJFMAU,              "FJFMAU" },
 863         { AV_SPARC_IMA,                 "IMA" },
 864         { 0, NULL }
 865 };
 866
 867 static const cap_desc_t cap_desc_386[] = {
 868         { AV_386_FPU,                   "FPU" },
 869         { AV_386_TSC,                   "TSC" },
 870         { AV_386_CX8,                   "CX8" },
 871         { AV_386_SEP,                   "SEP" },
 872         { AV_386_AMD_SYSC,              "AMD_SYSC" },
 873         { AV_386_CMOV,                  "CMOV" },
 874         { AV_386_MMX,                   "MMX" },
 875         { AV_386_AMD_MMX,               "AMD_MMX" },
 876         { AV_386_AMD_3DNow,             "AMD_3DNow" },
 877         { AV_386_AMD_3DNowx,            "AMD_3DNowx" },
 878         { AV_386_FXSR,                  "FXSR" },
 879         { AV_386_SSE,                   "SSE" },
 880         { AV_386_SSE2,                  "SSE2" },
 881         { AV_386_PAUSE,                 "PAUSE" },
 882         { AV_386_SSE3,                  "SSE3" },
 883         { AV_386_MON,                   "MON" },
 884         { AV_386_CX16,                  "CX16" },
 885         { AV_386_AHF,                   "AHF" },
 886         { AV_386_TSCP,                  "TSCP" },
 887         { AV_386_AMD_SSE4A,             "AMD_SSE4A" },
 888         { AV_386_POPCNT,                "POPCNT" },
 889         { AV_386_AMD_LZCNT,             "AMD_LZCNT" },
 890         { AV_386_SSSE3,                 "SSSE3" },
 891         { AV_386_SSE4_1,                "SSE4.1" },
 892         { AV_386_SSE4_2,                "SSE4.2" },
 893         { 0, NULL }
 894 };
 895
 896 private int
 897 doshn(struct magic_set *ms, int clazz, int swap, int fd, off_t off, int num,
 898     size_t size, off_t fsize, int *flags, int mach, int strtab)
 899 {
 900         Elf32_Shdr sh32;
 901         Elf64_Shdr sh64;
 902         int stripped = 1;
 903         void *nbuf;
 904         off_t noff, coff, name_off;
 905         uint64_t cap_hw1 = 0;   /* SunOS 5.x hardware capabilites */
 906         uint64_t cap_sf1 = 0;   /* SunOS 5.x software capabilites */
 907         char name[50];
 908
 909         if (size != xsh_sizeof) {
 910                 if (file_printf(ms, ", corrupted section header size") == -1)
 911                         return -1;
 912                 return 0;
 913         }
 914
 915         /* Read offset of name section to be able to read section names later */
 916         if (pread(fd, xsh_addr, xsh_sizeof, off + size * strtab) == -1) {
 917                 file_badread(ms);
 918                 return -1;
 919         }
 920         name_off = xsh_offset;
 921
 922         for ( ; num; num--) {
 923                 /* Read the name of this section. */
 924                 if (pread(fd, name, sizeof(name), name_off + xsh_name) == -1) {
 925                         file_badread(ms);
 926                         return -1;
 927                 }
 928                 name[sizeof(name) - 1] = '\0';
 929                 if (strcmp(name, ".debug_info") == 0)
 930                         stripped = 0;
 931
 932                 if (pread(fd, xsh_addr, xsh_sizeof, off) == -1) {
 933                         file_badread(ms);
 934                         return -1;
 935                 }
 936                 off += size;
 937
 938                 /* Things we can determine before we seek */
 939                 switch (xsh_type) {
 940                 case SHT_SYMTAB:
 941 #if 0
 942                 case SHT_DYNSYM:
 943 #endif
 944                         stripped = 0;
 945                         break;
 946                 default:
 947                         if (xsh_offset > fsize) {
 948                                 /* Perhaps warn here */
 949                                 continue;
 950                         }
 951                         break;
 952                 }
 953
 954                 /* Things we can determine when we seek */
 955                 switch (xsh_type) {
 956                 case SHT_NOTE:
 957                         if ((nbuf = malloc(xsh_size)) == NULL) {
 958                                 file_error(ms, errno, "Cannot allocate memory"
 959                                     " for note");
 960                                 return -1;
 961                         }
 962                         if (pread(fd, nbuf, xsh_size, xsh_offset) == -1) {
 963                                 file_badread(ms);
 964                                 free(nbuf);
 965                                 return -1;
 966                         }
 967
 968                         noff = 0;
 969                         for (;;) {
 970                                 if (noff >= (off_t)xsh_size)
 971                                         break;
 972                                 noff = donote(ms, nbuf, (size_t)noff,
 973                                     xsh_size, clazz, swap, 4, flags);
 974                                 if (noff == 0)
 975                                         break;
 976                         }
 977                         free(nbuf);
 978                         break;
 979                 case SHT_SUNW_cap:
 980                         switch (mach) {
 981                         case EM_SPARC:
 982                         case EM_SPARCV9:
 983                         case EM_IA_64:
 984                         case EM_386:
 985                         case EM_AMD64:
 986                                 break;
 987                         default:
 988                                 goto skip;
 989                         }
 990
 991                         if (lseek(fd, xsh_offset, SEEK_SET) == (off_t)-1) {
 992                                 file_badseek(ms);
 993                                 return -1;
 994                         }
 995                         coff = 0;
 996                         for (;;) {
 997                                 Elf32_Cap cap32;
 998                                 Elf64_Cap cap64;
 999                                 char cbuf[/*CONSTCOND*/
1000                                     MAX(sizeof cap32, sizeof cap64)];
1001                                 if ((coff += xcap_sizeof) > (off_t)xsh_size)
1002                                         break;
1003                                 if (read(fd, cbuf, (size_t)xcap_sizeof) !=
1004                                     (ssize_t)xcap_sizeof) {
1005                                         file_badread(ms);
1006                                         return -1;
1007                                 }
1008                                 (void)memcpy(xcap_addr, cbuf, xcap_sizeof);
1009                                 switch (xcap_tag) {
1010                                 case CA_SUNW_NULL:
1011                                         break;
1012                                 case CA_SUNW_HW_1:
1013                                         cap_hw1 |= xcap_val;
1014                                         break;
1015                                 case CA_SUNW_SF_1:
1016                                         cap_sf1 |= xcap_val;
1017                                         break;
1018                                 default:
1019                                         if (file_printf(ms,
1020                                             ", with unknown capability "
1021                                             "0x%" INT64_T_FORMAT "x = 0x%"
1022                                             INT64_T_FORMAT "x",
1023                                             (unsigned long long)xcap_tag,
1024                                             (unsigned long long)xcap_val) == -1)
1025                                                 return -1;
1026                                         break;
1027                                 }
1028                         }
1029                         /*FALLTHROUGH*/
1030                 skip:
1031                 default:
1032                         break;
1033                 }
1034         }
1035
1036         if (file_printf(ms, ", %sstripped", stripped ? "" : "not ") == -1)
1037                 return -1;
1038         if (cap_hw1) {
1039                 const cap_desc_t *cdp;
1040                 switch (mach) {
1041                 case EM_SPARC:
1042                 case EM_SPARC32PLUS:
1043                 case EM_SPARCV9:
1044                         cdp = cap_desc_sparc;
1045                         break;
1046                 case EM_386:
1047                 case EM_IA_64:
1048                 case EM_AMD64:
1049                         cdp = cap_desc_386;
1050                         break;
1051                 default:
1052                         cdp = NULL;
1053                         break;
1054                 }
1055                 if (file_printf(ms, ", uses") == -1)
1056                         return -1;
1057                 if (cdp) {
1058                         while (cdp->cd_name) {
1059                                 if (cap_hw1 & cdp->cd_mask) {
1060                                         if (file_printf(ms,
1061                                             " %s", cdp->cd_name) == -1)
1062                                                 return -1;
1063                                         cap_hw1 &= ~cdp->cd_mask;
1064                                 }
1065                                 ++cdp;
1066                         }
1067                         if (cap_hw1)
1068                                 if (file_printf(ms,
1069                                     " unknown hardware capability 0x%"
1070                                     INT64_T_FORMAT "x",
1071                                     (unsigned long long)cap_hw1) == -1)
1072                                         return -1;
1073                 } else {
1074                         if (file_printf(ms,
1075                             " hardware capability 0x%" INT64_T_FORMAT "x",
1076                             (unsigned long long)cap_hw1) == -1)
1077                                 return -1;
1078                 }
1079         }
1080         if (cap_sf1) {
1081                 if (cap_sf1 & SF1_SUNW_FPUSED) {
1082                         if (file_printf(ms,
1083                             (cap_sf1 & SF1_SUNW_FPKNWN)
1084                             ? ", uses frame pointer"
1085                             : ", not known to use frame pointer") == -1)
1086                                 return -1;
1087                 }
1088                 cap_sf1 &= ~SF1_SUNW_MASK;
1089                 if (cap_sf1)
1090                         if (file_printf(ms,
1091                             ", with unknown software capability 0x%"
1092                             INT64_T_FORMAT "x",
1093                             (unsigned long long)cap_sf1) == -1)
1094                                 return -1;
1095         }
1096         return 0;
1097 }
1098
1099 /*
1100  * Look through the program headers of an executable image, searching
1101  * for a PT_INTERP section; if one is found, it's dynamically linked,
1102  * otherwise it's statically linked.
1103  */
1104 private int
1105 dophn_exec(struct magic_set *ms, int clazz, int swap, int fd, off_t off,
1106     int num, size_t size, off_t fsize, int *flags, int sh_num)
1107 {
1108         Elf32_Phdr ph32;
1109         Elf64_Phdr ph64;
1110         const char *linking_style = "statically";
1111         const char *shared_libraries = "";
1112         unsigned char nbuf[BUFSIZ];
1113         ssize_t bufsize;
1114         size_t offset, align, len;
1115
1116         if (size != xph_sizeof) {
1117                 if (file_printf(ms, ", corrupted program header size") == -1)
1118                         return -1;
1119                 return 0;
1120         }
1121
1122         for ( ; num; num--) {
1123                 if (pread(fd, xph_addr, xph_sizeof, off) == -1) {
1124                         file_badread(ms);
1125                         return -1;
1126                 }
1127
1128                 off += size;
1129
1130                 /* Things we can determine before we seek */
1131                 switch (xph_type) {
1132                 case PT_DYNAMIC:
1133                         linking_style = "dynamically";
1134                         break;
1135                 case PT_INTERP:
1136                         shared_libraries = " (uses shared libs)";
1137                         break;
1138                 default:
1139                         if (xph_offset > fsize) {
1140                                 /* Maybe warn here? */
1141                                 continue;
1142                         }
1143                         break;
1144                 }
1145
1146                 /* Things we can determine when we seek */
1147                 switch (xph_type) {
1148                 case PT_NOTE:
1149                         if ((align = xph_align) & 0x80000000UL) {
1150                                 if (file_printf(ms,
1151                                     ", invalid note alignment 0x%lx",
1152                                     (unsigned long)align) == -1)
1153                                         return -1;
1154                                 align = 4;
1155                         }
1156                         if (sh_num)
1157                                 break;
1158                         /*
1159                          * This is a PT_NOTE section; loop through all the notes
1160                          * in the section.
1161                          */
1162                         len = xph_filesz < sizeof(nbuf) ? xph_filesz
1163                             : sizeof(nbuf);
1164                         bufsize = pread(fd, nbuf, len, xph_offset);
1165                         if (bufsize == -1) {
1166                                 file_badread(ms);
1167                                 return -1;
1168                         }
1169                         offset = 0;
1170                         for (;;) {
1171                                 if (offset >= (size_t)bufsize)
1172                                         break;
1173                                 offset = donote(ms, nbuf, offset,
1174                                     (size_t)bufsize, clazz, swap, align,
1175                                     flags);
1176                                 if (offset == 0)
1177                                         break;
1178                         }
1179                         break;
1180                 default:
1181                         break;
1182                 }
1183         }
1184         if (file_printf(ms, ", %s linked%s", linking_style, shared_libraries)
1185             == -1)
1186             return -1;
1187         return 0;
1188 }
1189
1190
1191 protected int
1192 file_tryelf(struct magic_set *ms, int fd, const unsigned char *buf,
1193     size_t nbytes)
1194 {
1195         union {
1196                 int32_t l;
1197                 char c[sizeof (int32_t)];
1198         } u;
1199         int clazz;
1200         int swap;
1201         struct stat st;
1202         off_t fsize;
1203         int flags = 0;
1204         Elf32_Ehdr elf32hdr;
1205         Elf64_Ehdr elf64hdr;
1206         uint16_t type;
1207
1208         if (ms->flags & (MAGIC_MIME|MAGIC_APPLE))
1209                 return 0;
1210         /*
1211          * ELF executables have multiple section headers in arbitrary
1212          * file locations and thus file(1) cannot determine it from easily.
1213          * Instead we traverse thru all section headers until a symbol table
1214          * one is found or else the binary is stripped.
1215          * Return immediately if it's not ELF (so we avoid pipe2file unless needed).
1216          */
1217         if (buf[EI_MAG0] != ELFMAG0
1218             || (buf[EI_MAG1] != ELFMAG1 && buf[EI_MAG1] != OLFMAG1)
1219             || buf[EI_MAG2] != ELFMAG2 || buf[EI_MAG3] != ELFMAG3)
1220                 return 0;
1221
1222         /*
1223          * If we cannot seek, it must be a pipe, socket or fifo.
1224          */
1225         if((lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) && (errno == ESPIPE))
1226                 fd = file_pipe2file(ms, fd, buf, nbytes);
1227
1228         if (fstat(fd, &st) == -1) {
1229                 file_badread(ms);
1230                 return -1;
1231         }
1232         fsize = st.st_size;
1233
1234         clazz = buf[EI_CLASS];
1235
1236         switch (clazz) {
1237         case ELFCLASS32:
1238 #undef elf_getu
1239 #define elf_getu(a, b)  elf_getu32(a, b)
1240 #undef elfhdr
1241 #define elfhdr elf32hdr
1242 #include "elfclass.h"
1243         case ELFCLASS64:
1244 #undef elf_getu
1245 #define elf_getu(a, b)  elf_getu64(a, b)
1246 #undef elfhdr
1247 #define elfhdr elf64hdr
1248 #include "elfclass.h"
1249         default:
1250             if (file_printf(ms, ", unknown class %d", clazz) == -1)
1251                     return -1;
1252             break;
1253         }
1254         return 0;
1255 }
1256 #endif