diff options
Diffstat (limited to 'tests/showptable.c')
| -rw-r--r-- | tests/showptable.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/tests/showptable.c b/tests/showptable.c new file mode 100644 index 00000000..21247c8b --- /dev/null +++ b/tests/showptable.c @@ -0,0 +1,135 @@ +/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2005 Red Hat, Inc. + Written by Ulrich Drepper <drepper@redhat.com>, 1998. + + This program is Open Source software; you can redistribute it and/or + modify it under the terms of the Open Software License version 1.0 as + published by the Open Source Initiative. + + You should have received a copy of the Open Software License along + with this program; if not, you may obtain a copy of the Open Software + License version 1.0 from http://www.opensource.org/licenses/osl.php or + by writing the Open Source Initiative c/o Lawrence Rosen, Esq., + 3001 King Ranch Road, Ukiah, CA 95482. */ + +#include <config.h> + +#include <errno.h> +#include <fcntl.h> +#include <gelf.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +int +main (int argc, char *argv[]) +{ + Elf *elf; + int fd; + GElf_Ehdr ehdr; + int cnt; + + if (argc < 2) + { + puts ("missing parameter"); + exit (1); + } + + fd = open (argv[1], O_RDONLY); + if (fd == -1) + { + printf ("cannot open \"%s\": %s\n", argv[1], strerror (errno)); + exit (1); + } + + elf_version (EV_CURRENT); + + elf = elf_begin (fd, ELF_C_READ, NULL); + if (elf == NULL) + { + printf ("cannot open ELF file: %s\n", elf_errmsg (-1)); + exit (1); + } + + if (elf_kind (elf) != ELF_K_ELF) + { + printf ("\"%s\" is not an ELF file\n", argv[1]); + exit (1); + } + + if (gelf_getehdr (elf, &ehdr) == NULL) + { + printf ("cannot get the ELF header: %s\n", elf_errmsg (-1)); + exit (1); + } + + printf ("idx type %*s %*s %*s %*s %*s align flags\n", + gelf_getclass (elf) == ELFCLASS32 ? 9 : 17, "offset", + gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, "vaddr", + gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, "paddr", + gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, "filesz", + gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, "memsz"); + + for (cnt = 0; cnt < ehdr.e_phnum; ++cnt) + { + static const char *typenames[] = + { + [PT_NULL] = "NULL", + [PT_LOAD] = "LOAD", + [PT_DYNAMIC] = "DYNAMIC", + [PT_INTERP] = "INTERP", + [PT_NOTE] = "NOTE", + [PT_SHLIB] = "SHLIB", + [PT_PHDR] = "PHDR" + }; + GElf_Phdr mem; + GElf_Phdr *phdr = gelf_getphdr (elf, cnt, &mem); + char buf[19]; + const char *p_type = typenames[phdr->p_type]; + + /* If we don't know the name of the type we use the number value. */ + if (phdr->p_type >= PT_NUM) + { + snprintf (buf, sizeof (buf), "%x", phdr->p_type); + p_type = buf; + } + + printf ("%3d %-7s %#0*llx %#0*llx %#0*llx %#0*llx %#0*llx %#6llx ", + cnt, p_type, + gelf_getclass (elf) == ELFCLASS32 ? 9 : 17, + (unsigned long long int) phdr->p_offset, + gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, + (unsigned long long int) phdr->p_vaddr, + gelf_getclass (elf) == ELFCLASS32 ? 10 : 18, + (unsigned long long int) phdr->p_paddr, + gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, + (unsigned long long int) phdr->p_filesz, + gelf_getclass (elf) == ELFCLASS32 ? 9 : 12, + (unsigned long long int) phdr->p_memsz, + (unsigned long long int) phdr->p_align); + + putc_unlocked ((phdr->p_flags & PF_X) ? 'X' : ' ', stdout); + putc_unlocked ((phdr->p_flags & PF_W) ? 'W' : ' ', stdout); + putc_unlocked ((phdr->p_flags & PF_R) ? 'R' : ' ', stdout); + + putc_unlocked ('\n', stdout); + + if (phdr->p_type == PT_INTERP) + { + /* We can show the user the name of the interpreter. */ + size_t maxsize; + char *filedata = elf_rawfile (elf, &maxsize); + + if (filedata != NULL && phdr->p_offset < maxsize) + printf ("\t[Requesting program interpreter: %s]\n", + filedata + phdr->p_offset); + } + } + + if (elf_end (elf) != 0) + { + printf ("error while freeing ELF descriptor: %s\n", elf_errmsg (-1)); + exit (1); + } + + return 0; +} |