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| 1 | +/*- |
| 2 | + * Copyright (c) 2015 Sofian Brabez <sbz@FreeBSD.org> |
| 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, this list of conditions and the following disclaimer |
| 10 | + * in this position and unchanged. |
| 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(S) ``AS IS'' AND ANY EXPRESS OR |
| 16 | + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 17 | + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 18 | + * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 19 | + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 20 | + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 21 | + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 22 | + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 23 | + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 24 | + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 25 | + */ |
| 26 | +#include <err.h> |
| 27 | +#include <fcntl.h> |
| 28 | +#include <gelf.h> |
| 29 | +#include <stdint.h> |
| 30 | +#include <string.h> |
| 31 | +#include <stdio.h> |
| 32 | +#include <stdlib.h> |
| 33 | +#include <sysexits.h> |
| 34 | +#include <unistd.h> |
| 35 | + |
| 36 | +static int |
| 37 | +elf_debug_sections(Elf *e) { |
| 38 | + Elf_Scn *scn=NULL; |
| 39 | + GElf_Shdr shdr; |
| 40 | + size_t n, shstrndx, sz; |
| 41 | + char *name; |
| 42 | + int has_debug=0; |
| 43 | + |
| 44 | + if (elf_getshdrstrndx(e, &shstrndx) != 0) |
| 45 | + errx(EX_SOFTWARE, "elf_getshdrstrndx() failed : %s . " , elf_errmsg(-1)); |
| 46 | + |
| 47 | + while ((scn = elf_nextscn(e, scn)) != NULL) { |
| 48 | + gelf_getshdr(scn, &shdr); |
| 49 | + |
| 50 | + name = elf_strptr(e, shstrndx, shdr.sh_name); |
| 51 | + if (!strstr(name, "debug_")) |
| 52 | + continue; |
| 53 | + |
| 54 | + has_debug++; |
| 55 | + |
| 56 | + } |
| 57 | + |
| 58 | + return (has_debug > 0); |
| 59 | +} |
| 60 | + |
| 61 | +int main(int argc, char *argv[]) { |
| 62 | + int fd, rc; |
| 63 | + Elf *e; |
| 64 | + int has_debug; |
| 65 | + |
| 66 | + if (elf_version(EV_CURRENT) == EV_NONE ) |
| 67 | + errx(EX_SOFTWARE, "ELF library initialization failed : %s ", elf_errmsg(-1)); |
| 68 | + |
| 69 | + if ((fd =open(argv [1], O_RDONLY , 0)) < 0) |
| 70 | + err(EX_NOINPUT,"open %s failed ", argv [1]); |
| 71 | + if ((e = elf_begin(fd, ELF_C_READ , NULL)) == NULL) |
| 72 | + errx(EX_SOFTWARE, "elf_begin () failed : %s . ", elf_errmsg(-1)); |
| 73 | + if (elf_kind(e) != ELF_K_ELF) |
| 74 | + errx(EX_DATAERR, "%s is not an ELF object . ", argv[1]); |
| 75 | + |
| 76 | + has_debug=elf_debug_sections(e); |
| 77 | + printf(has_debug ? "HAS DEBUG\n" : "NO DEBUG\n"); |
| 78 | + |
| 79 | + rc=close(fd); |
| 80 | + rc=elf_end(e); |
| 81 | + |
| 82 | + return (rc); |
| 83 | +} |
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