2 * Copyright (c) Christos Zoulas 2003.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
40 FILE_RCSID("@(#)$File: readelf.c,v 1.63 2007/01/16 14:56:45 ljt Exp $")
44 private int dophn_core(struct magic_set *, int, int, int, off_t, int, size_t,
47 private int dophn_exec(struct magic_set *, int, int, int, off_t, int, size_t,
49 private int doshn(struct magic_set *, int, int, int, off_t, int, size_t, int *);
50 private size_t donote(struct magic_set *, unsigned char *, size_t, size_t, int,
53 #define ELF_ALIGN(a) ((((a) + align - 1) / align) * align)
55 #define isquote(c) (strchr("'\"`", (c)) != NULL)
57 private uint16_t getu16(int, uint16_t);
58 private uint32_t getu32(int, uint32_t);
59 private uint64_t getu64(int, uint64_t);
62 getu16(int swap, uint16_t value)
72 retval.c[0] = tmpval.c[1];
73 retval.c[1] = tmpval.c[0];
81 getu32(int swap, uint32_t value)
91 retval.c[0] = tmpval.c[3];
92 retval.c[1] = tmpval.c[2];
93 retval.c[2] = tmpval.c[1];
94 retval.c[3] = tmpval.c[0];
102 getu64(int swap, uint64_t value)
112 retval.c[0] = tmpval.c[7];
113 retval.c[1] = tmpval.c[6];
114 retval.c[2] = tmpval.c[5];
115 retval.c[3] = tmpval.c[4];
116 retval.c[4] = tmpval.c[3];
117 retval.c[5] = tmpval.c[2];
118 retval.c[6] = tmpval.c[1];
119 retval.c[7] = tmpval.c[0];
126 #ifdef USE_ARRAY_FOR_64BIT_TYPES
127 # define elf_getu64(swap, array) \
128 ((swap ? ((uint64_t)getu32(swap, array[0])) << 32 : getu32(swap, array[0])) + \
129 (swap ? getu32(swap, array[1]) : ((uint64_t)getu32(swap, array[1]) << 32)))
131 # define elf_getu64(swap, value) getu64(swap, value)
134 #define xsh_addr (class == ELFCLASS32 \
137 #define xsh_sizeof (class == ELFCLASS32 \
140 #define xsh_size (class == ELFCLASS32 \
141 ? getu32(swap, sh32.sh_size) \
142 : getu64(swap, sh64.sh_size))
143 #define xsh_offset (class == ELFCLASS32 \
144 ? getu32(swap, sh32.sh_offset) \
145 : getu64(swap, sh64.sh_offset))
146 #define xsh_type (class == ELFCLASS32 \
147 ? getu32(swap, sh32.sh_type) \
148 : getu32(swap, sh64.sh_type))
149 #define xph_addr (class == ELFCLASS32 \
152 #define xph_sizeof (class == ELFCLASS32 \
155 #define xph_type (class == ELFCLASS32 \
156 ? getu32(swap, ph32.p_type) \
157 : getu32(swap, ph64.p_type))
158 #define xph_offset (off_t)(class == ELFCLASS32 \
159 ? getu32(swap, ph32.p_offset) \
160 : getu64(swap, ph64.p_offset))
161 #define xph_align (size_t)((class == ELFCLASS32 \
162 ? (off_t) (ph32.p_align ? \
163 getu32(swap, ph32.p_align) : 4) \
164 : (off_t) (ph64.p_align ? \
165 getu64(swap, ph64.p_align) : 4)))
166 #define xph_filesz (size_t)((class == ELFCLASS32 \
167 ? getu32(swap, ph32.p_filesz) \
168 : getu64(swap, ph64.p_filesz)))
169 #define xnh_addr (class == ELFCLASS32 \
172 #define xph_memsz (size_t)((class == ELFCLASS32 \
173 ? getu32(swap, ph32.p_memsz) \
174 : getu64(swap, ph64.p_memsz)))
175 #define xnh_sizeof (class == ELFCLASS32 \
178 #define xnh_type (class == ELFCLASS32 \
179 ? getu32(swap, nh32.n_type) \
180 : getu32(swap, nh64.n_type))
181 #define xnh_namesz (class == ELFCLASS32 \
182 ? getu32(swap, nh32.n_namesz) \
183 : getu32(swap, nh64.n_namesz))
184 #define xnh_descsz (class == ELFCLASS32 \
185 ? getu32(swap, nh32.n_descsz) \
186 : getu32(swap, nh64.n_descsz))
187 #define prpsoffsets(i) (class == ELFCLASS32 \
192 size_t prpsoffsets32[] = {
194 28, /* Linux 2.0.36 (short name) */
195 44, /* Linux (path name) */
199 size_t prpsoffsets64[] = {
200 16, /* FreeBSD, 64-bit */
201 40, /* Linux (tested on core from 2.4.x, short name) */
202 56, /* Linux (path name) */
203 120, /* SunOS 5.x, 64-bit */
206 #define NOFFSETS32 (sizeof prpsoffsets32 / sizeof prpsoffsets32[0])
207 #define NOFFSETS64 (sizeof prpsoffsets64 / sizeof prpsoffsets64[0])
209 #define NOFFSETS (class == ELFCLASS32 ? NOFFSETS32 : NOFFSETS64)
212 * Look through the program headers of an executable image, searching
213 * for a PT_NOTE section of type NT_PRPSINFO, with a name "CORE" or
214 * "FreeBSD"; if one is found, try looking in various places in its
215 * contents for a 16-character string containing only printable
216 * characters - if found, that string should be the name of the program
217 * that dropped core. Note: right after that 16-character string is,
218 * at least in SunOS 5.x (and possibly other SVR4-flavored systems) and
219 * Linux, a longer string (80 characters, in 5.x, probably other
220 * SVR4-flavored systems, and Linux) containing the start of the
221 * command line for that program.
223 * The signal number probably appears in a section of type NT_PRSTATUS,
224 * but that's also rather OS-dependent, in ways that are harder to
225 * dissect with heuristics, so I'm not bothering with the signal number.
226 * (I suppose the signal number could be of interest in situations where
227 * you don't have the binary of the program that dropped core; if you
228 * *do* have that binary, the debugger will probably tell you what
232 #define OS_STYLE_SVR4 0
233 #define OS_STYLE_FREEBSD 1
234 #define OS_STYLE_NETBSD 2
236 private const char *os_style_names[] = {
242 #define FLAGS_DID_CORE 1
243 #define FLAGS_DID_NOTE 2
246 dophn_core(struct magic_set *ms, int class, int swap, int fd, off_t off,
247 int num, size_t size, off_t fsize, int *flags)
252 unsigned char nbuf[BUFSIZ];
257 if (fstat(fd, &st) < 0) {
262 if (size != xph_sizeof) {
263 if (file_printf(ms, ", corrupted program header size") == -1)
269 * Loop through all the program headers.
271 for ( ; num; num--) {
272 if ((savedoffset = lseek(fd, off, SEEK_SET)) == (off_t)-1) {
276 if (read(fd, xph_addr, xph_sizeof) == -1) {
280 if (xph_offset > fsize) {
281 if (lseek(fd, savedoffset, SEEK_SET) == (off_t)-1) {
289 if (xph_type != PT_NOTE)
293 * This is a PT_NOTE section; loop through all the notes
296 if (lseek(fd, xph_offset, SEEK_SET) == (off_t)-1) {
300 bufsize = read(fd, nbuf,
301 ((xph_filesz < sizeof(nbuf)) ? xph_filesz : sizeof(nbuf)));
308 if (offset >= (size_t)bufsize)
310 offset = donote(ms, nbuf, offset, (size_t)bufsize,
311 class, swap, 4, flags);
322 donote(struct magic_set *ms, unsigned char *nbuf, size_t offset, size_t size,
323 int class, int swap, size_t align, int *flags)
331 uint32_t namesz, descsz;
333 (void)memcpy(xnh_addr, &nbuf[offset], xnh_sizeof);
334 offset += xnh_sizeof;
338 if ((namesz == 0) && (descsz == 0)) {
340 * We're out of note headers.
342 return (offset >= size) ? offset : size;
345 if (namesz & 0x80000000) {
346 (void)file_printf(ms, ", bad note name size 0x%lx",
347 (unsigned long)namesz);
351 if (descsz & 0x80000000) {
352 (void)file_printf(ms, ", bad note description size 0x%lx",
353 (unsigned long)descsz);
359 doff = ELF_ALIGN(offset + namesz);
361 if (offset + namesz > size) {
363 * We're past the end of the buffer.
368 offset = ELF_ALIGN(doff + descsz);
369 if (doff + descsz > size) {
371 * We're past the end of the buffer.
373 return (offset >= size) ? offset : size;
376 if (*flags & FLAGS_DID_NOTE)
379 if (namesz == 4 && strcmp((char *)&nbuf[noff], "GNU") == 0 &&
380 xnh_type == NT_GNU_VERSION && descsz == 16) {
382 (void)memcpy(desc, &nbuf[doff], sizeof(desc));
384 if (file_printf(ms, ", for GNU/") == -1)
386 switch (getu32(swap, desc[0])) {
388 if (file_printf(ms, "Linux") == -1)
392 if (file_printf(ms, "Hurd") == -1)
396 if (file_printf(ms, "Solaris") == -1)
400 if (file_printf(ms, "<unknown>") == -1)
403 if (file_printf(ms, " %d.%d.%d", getu32(swap, desc[1]),
404 getu32(swap, desc[2]), getu32(swap, desc[3])) == -1)
406 *flags |= FLAGS_DID_NOTE;
410 if (namesz == 7 && strcmp((char *)&nbuf[noff], "NetBSD") == 0 &&
411 xnh_type == NT_NETBSD_VERSION && descsz == 4) {
413 (void)memcpy(&desc, &nbuf[doff], sizeof(desc));
414 desc = getu32(swap, desc);
416 if (file_printf(ms, ", for NetBSD") == -1)
419 * The version number used to be stuck as 199905, and was thus
420 * basically content-free. Newer versions of NetBSD have fixed
421 * this and now use the encoding of __NetBSD_Version__:
427 * r = release ["",A-Z,Z[A-Z] but numeric]
430 if (desc > 100000000U) {
431 uint32_t ver_patch = (desc / 100) % 100;
432 uint32_t ver_rel = (desc / 10000) % 100;
433 uint32_t ver_min = (desc / 1000000) % 100;
434 uint32_t ver_maj = desc / 100000000;
436 if (file_printf(ms, " %u.%u", ver_maj, ver_min) == -1)
438 if (ver_rel == 0 && ver_patch != 0) {
439 if (file_printf(ms, ".%u", ver_patch) == -1)
441 } else if (ver_rel != 0) {
442 while (ver_rel > 26) {
443 if (file_printf(ms, "Z") == -1)
447 if (file_printf(ms, "%c", 'A' + ver_rel - 1)
452 *flags |= FLAGS_DID_NOTE;
456 if (namesz == 8 && strcmp((char *)&nbuf[noff], "FreeBSD") == 0 &&
457 xnh_type == NT_FREEBSD_VERSION && descsz == 4) {
459 (void)memcpy(&desc, &nbuf[doff], sizeof(desc));
460 desc = getu32(swap, desc);
461 if (file_printf(ms, ", for FreeBSD") == -1)
465 * Contents is __FreeBSD_version, whose relation to OS
466 * versions is defined by a huge table in the Porter's
467 * Handbook. This is the general scheme:
470 * Mmp000 (before 4.10)
471 * Mmi0p0 (before 5.0)
474 * Development branches:
475 * Mmpxxx (before 4.6)
476 * Mmp1xx (before 4.10)
477 * Mmi1xx (before 5.0)
483 * i = minor version increment (491000 -> 4.10)
487 * The first release of FreeBSD to use ELF by default
490 if (desc == 460002) {
491 if (file_printf(ms, " 4.6.2") == -1)
493 } else if (desc < 460100) {
494 if (file_printf(ms, " %d.%d", desc / 100000,
495 desc / 10000 % 10) == -1)
497 if (desc / 1000 % 10 > 0)
498 if (file_printf(ms, ".%d", desc / 1000 % 10)
501 if ((desc % 1000 > 0) || (desc % 100000 == 0))
502 if (file_printf(ms, " (%d)", desc) == -1)
504 } else if (desc < 500000) {
505 if (file_printf(ms, " %d.%d", desc / 100000,
506 desc / 10000 % 10 + desc / 1000 % 10) == -1)
508 if (desc / 100 % 10 > 0) {
509 if (file_printf(ms, " (%d)", desc) == -1)
511 } else if (desc / 10 % 10 > 0) {
512 if (file_printf(ms, ".%d", desc / 10 % 10)
517 if (file_printf(ms, " %d.%d", desc / 100000,
518 desc / 1000 % 100) == -1)
520 if ((desc / 100 % 10 > 0) ||
521 (desc % 100000 / 100 == 0)) {
522 if (file_printf(ms, " (%d)", desc) == -1)
524 } else if (desc / 10 % 10 > 0) {
525 if (file_printf(ms, ".%d", desc / 10 % 10)
530 *flags |= FLAGS_DID_NOTE;
534 if (namesz == 8 && strcmp((char *)&nbuf[noff], "OpenBSD") == 0 &&
535 xnh_type == NT_OPENBSD_VERSION && descsz == 4) {
536 if (file_printf(ms, ", for OpenBSD") == -1)
538 /* Content of note is always 0 */
539 *flags |= FLAGS_DID_NOTE;
543 if (namesz == 10 && strcmp((char *)&nbuf[noff], "DragonFly") == 0 &&
544 xnh_type == NT_DRAGONFLY_VERSION && descsz == 4) {
546 if (file_printf(ms, ", for DragonFly") == -1)
548 (void)memcpy(&desc, &nbuf[doff], sizeof(desc));
549 desc = getu32(swap, desc);
550 if (file_printf(ms, " %d.%d.%d", desc / 100000,
551 desc / 10000 % 10, desc % 10000) == -1)
553 *flags |= FLAGS_DID_NOTE;
559 * Sigh. The 2.0.36 kernel in Debian 2.1, at
560 * least, doesn't correctly implement name
561 * sections, in core dumps, as specified by
562 * the "Program Linking" section of "UNIX(R) System
563 * V Release 4 Programmer's Guide: ANSI C and
564 * Programming Support Tools", because my copy
565 * clearly says "The first 'namesz' bytes in 'name'
566 * contain a *null-terminated* [emphasis mine]
567 * character representation of the entry's owner
568 * or originator", but the 2.0.36 kernel code
569 * doesn't include the terminating null in the
572 if ((namesz == 4 && strncmp((char *)&nbuf[noff], "CORE", 4) == 0) ||
573 (namesz == 5 && strcmp((char *)&nbuf[noff], "CORE") == 0)) {
574 os_style = OS_STYLE_SVR4;
577 if ((namesz == 8 && strcmp((char *)&nbuf[noff], "FreeBSD") == 0)) {
578 os_style = OS_STYLE_FREEBSD;
581 if ((namesz >= 11 && strncmp((char *)&nbuf[noff], "NetBSD-CORE", 11)
583 os_style = OS_STYLE_NETBSD;
587 if ((*flags & FLAGS_DID_CORE) != 0)
590 if (os_style != -1) {
591 if (file_printf(ms, ", %s-style", os_style_names[os_style])
597 case OS_STYLE_NETBSD:
598 if (xnh_type == NT_NETBSD_CORE_PROCINFO) {
601 * Extract the program name. It is at
602 * offset 0x7c, and is up to 32-bytes,
603 * including the terminating NUL.
605 if (file_printf(ms, ", from '%.31s'",
606 &nbuf[doff + 0x7c]) == -1)
610 * Extract the signal number. It is at
613 (void)memcpy(&signo, &nbuf[doff + 0x08],
615 if (file_printf(ms, " (signal %u)",
616 getu32(swap, signo)) == -1)
623 if (xnh_type == NT_PRPSINFO) {
627 * Extract the program name. We assume
628 * it to be 16 characters (that's what it
629 * is in SunOS 5.x and Linux).
631 * Unfortunately, it's at a different offset
632 * in varous OSes, so try multiple offsets.
633 * If the characters aren't all printable,
636 for (i = 0; i < NOFFSETS; i++) {
637 size_t reloffset = prpsoffsets(i);
638 size_t noffset = doff + reloffset;
639 for (j = 0; j < 16; j++, noffset++,
642 * Make sure we're not past
643 * the end of the buffer; if
644 * we are, just give up.
650 * Make sure we're not past
651 * the end of the contents;
652 * if we are, this obviously
653 * isn't the right offset.
655 if (reloffset >= descsz)
677 if (!isprint(c) || isquote(c))
684 if (file_printf(ms, ", from '%.16s'",
685 &nbuf[doff + prpsoffsets(i)]) == -1)
696 *flags |= FLAGS_DID_CORE;
701 doshn(struct magic_set *ms, int class, int swap, int fd, off_t off, int num,
702 size_t size, int *flags)
710 if (size != xsh_sizeof) {
711 if (file_printf(ms, ", corrupted section header size") == -1)
716 if (lseek(fd, off, SEEK_SET) == (off_t)-1) {
721 for ( ; num; num--) {
722 if (read(fd, xsh_addr, xsh_sizeof) == -1) {
734 if ((off = lseek(fd, (off_t)0, SEEK_CUR)) ==
739 if ((nbuf = malloc((size_t)xsh_size)) == NULL) {
740 file_error(ms, errno, "Cannot allocate memory"
744 if ((noff = lseek(fd, (off_t)xsh_offset, SEEK_SET)) ==
750 if (read(fd, nbuf, (size_t)xsh_size) !=
759 if (noff >= (size_t)xsh_size)
761 noff = donote(ms, nbuf, (size_t)noff,
762 (size_t)xsh_size, class, swap, 4,
767 if ((lseek(fd, off, SEEK_SET)) == (off_t)-1) {
776 if (file_printf(ms, ", %sstripped", stripped ? "" : "not ") == -1)
782 * Look through the program headers of an executable image, searching
783 * for a PT_INTERP section; if one is found, it's dynamically linked,
784 * otherwise it's statically linked.
787 dophn_exec(struct magic_set *ms, int class, int swap, int fd, off_t off,
788 int num, size_t size, off_t fsize, int *flags)
792 const char *linking_style = "statically";
793 const char *shared_libraries = "";
794 unsigned char nbuf[BUFSIZ];
796 size_t offset, align;
797 off_t savedoffset = (off_t)-1;
800 if (fstat(fd, &st) < 0) {
805 if (size != xph_sizeof) {
806 if (file_printf(ms, ", corrupted program header size") == -1)
811 if (lseek(fd, off, SEEK_SET) == (off_t)-1) {
816 for ( ; num; num--) {
817 if (read(fd, xph_addr, xph_sizeof) == -1) {
821 if (xph_offset > st.st_size && savedoffset != (off_t)-1) {
822 if (lseek(fd, savedoffset, SEEK_SET) == (off_t)-1) {
829 if ((savedoffset = lseek(fd, (off_t)0, SEEK_CUR)) == (off_t)-1) {
834 if (xph_offset > fsize) {
835 if (lseek(fd, savedoffset, SEEK_SET) == (off_t)-1) {
844 linking_style = "dynamically";
847 shared_libraries = " (uses shared libs)";
850 if ((align = xph_align) & 0x80000000) {
852 ", invalid note alignment 0x%lx",
853 (unsigned long)align) == -1)
858 * This is a PT_NOTE section; loop through all the notes
861 if (lseek(fd, xph_offset, SEEK_SET)
866 bufsize = read(fd, nbuf, ((xph_filesz < sizeof(nbuf)) ?
867 xph_filesz : sizeof(nbuf)));
874 if (offset >= (size_t)bufsize)
876 offset = donote(ms, nbuf, offset,
877 (size_t)bufsize, class, swap, align,
882 if (lseek(fd, savedoffset, SEEK_SET) == (off_t)-1) {
889 if (file_printf(ms, ", %s linked%s", linking_style, shared_libraries)
897 file_tryelf(struct magic_set *ms, int fd, const unsigned char *buf,
902 char c[sizeof (int32_t)];
911 * If we cannot seek, it must be a pipe, socket or fifo.
913 if((lseek(fd, (off_t)0, SEEK_SET) == (off_t)-1) && (errno == ESPIPE))
914 fd = file_pipe2file(ms, fd, buf, nbytes);
916 if (fstat(fd, &st) == -1) {
923 * ELF executables have multiple section headers in arbitrary
924 * file locations and thus file(1) cannot determine it from easily.
925 * Instead we traverse thru all section headers until a symbol table
926 * one is found or else the binary is stripped.
928 if (buf[EI_MAG0] != ELFMAG0
929 || (buf[EI_MAG1] != ELFMAG1 && buf[EI_MAG1] != OLFMAG1)
930 || buf[EI_MAG2] != ELFMAG2 || buf[EI_MAG3] != ELFMAG3)
934 class = buf[EI_CLASS];
936 if (class == ELFCLASS32) {
938 if (nbytes <= sizeof (Elf32_Ehdr))
943 (void) memcpy(&elfhdr, buf, sizeof elfhdr);
944 swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA];
946 if (getu16(swap, elfhdr.e_type) == ET_CORE) {
948 if (dophn_core(ms, class, swap, fd,
949 (off_t)getu32(swap, elfhdr.e_phoff),
950 getu16(swap, elfhdr.e_phnum),
951 (size_t)getu16(swap, elfhdr.e_phentsize),
952 fsize, &flags) == -1)
958 if (getu16(swap, elfhdr.e_type) == ET_EXEC) {
959 if (dophn_exec(ms, class, swap,
960 fd, (off_t)getu32(swap, elfhdr.e_phoff),
961 getu16(swap, elfhdr.e_phnum),
962 (size_t)getu16(swap, elfhdr.e_phentsize),
967 if (doshn(ms, class, swap, fd,
968 (off_t)getu32(swap, elfhdr.e_shoff),
969 getu16(swap, elfhdr.e_shnum),
970 (size_t)getu16(swap, elfhdr.e_shentsize),
977 if (class == ELFCLASS64) {
979 if (nbytes <= sizeof (Elf64_Ehdr))
984 (void) memcpy(&elfhdr, buf, sizeof elfhdr);
985 swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA];
987 if (getu16(swap, elfhdr.e_type) == ET_CORE) {
989 if (dophn_core(ms, class, swap, fd,
990 (off_t)elf_getu64(swap, elfhdr.e_phoff),
991 getu16(swap, elfhdr.e_phnum),
992 (size_t)getu16(swap, elfhdr.e_phentsize),
993 fsize, &flags) == -1)
999 if (getu16(swap, elfhdr.e_type) == ET_EXEC) {
1000 if (dophn_exec(ms, class, swap, fd,
1001 (off_t)elf_getu64(swap, elfhdr.e_phoff),
1002 getu16(swap, elfhdr.e_phnum),
1003 (size_t)getu16(swap, elfhdr.e_phentsize),
1004 fsize, &flags) == -1)
1007 if (doshn(ms, class, swap, fd,
1008 (off_t)elf_getu64(swap, elfhdr.e_shoff),
1009 getu16(swap, elfhdr.e_shnum),
1010 (size_t)getu16(swap, elfhdr.e_shentsize), &flags)