diff options
Diffstat (limited to 'src/libelf/elf_getshdrstrndx.c')
| -rw-r--r-- | src/libelf/elf_getshdrstrndx.c | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/src/libelf/elf_getshdrstrndx.c b/src/libelf/elf_getshdrstrndx.c deleted file mode 100644 index 6f8d66e8..00000000 --- a/src/libelf/elf_getshdrstrndx.c +++ /dev/null @@ -1,229 +0,0 @@ -/* Return section index of section header string table. - Copyright (C) 2002, 2005, 2009, 2014 Red Hat, Inc. - This file is part of elfutils. - Written by Ulrich Drepper <drepper@redhat.com>, 2002. - - This file is free software; you can redistribute it and/or modify - it under the terms of either - - * the GNU Lesser General Public License as published by the Free - Software Foundation; either version 3 of the License, or (at - your option) any later version - - or - - * the GNU General Public License as published by the Free - Software Foundation; either version 2 of the License, or (at - your option) any later version - - or both in parallel, as here. - - elfutils is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received copies of the GNU General Public License and - the GNU Lesser General Public License along with this program. If - not, see <http://www.gnu.org/licenses/>. */ - -#ifdef HAVE_CONFIG_H -# include <config.h> -#endif - -#include <assert.h> -#include <errno.h> -#include <gelf.h> -#include <stddef.h> -#include <unistd.h> - -#include <system.h> -#include "libelfP.h" -#include "common.h" - - -int -elf_getshdrstrndx (elf, dst) - Elf *elf; - size_t *dst; -{ - int result = 0; - - if (elf == NULL) - return -1; - - if (unlikely (elf->kind != ELF_K_ELF)) - { - __libelf_seterrno (ELF_E_INVALID_HANDLE); - return -1; - } - - rwlock_rdlock (elf->lock); - - /* We rely here on the fact that the `elf' element is a common prefix - of `elf32' and `elf64'. */ - assert (offsetof (struct Elf, state.elf.ehdr) - == offsetof (struct Elf, state.elf32.ehdr)); - assert (sizeof (elf->state.elf.ehdr) - == sizeof (elf->state.elf32.ehdr)); - assert (offsetof (struct Elf, state.elf.ehdr) - == offsetof (struct Elf, state.elf64.ehdr)); - assert (sizeof (elf->state.elf.ehdr) - == sizeof (elf->state.elf64.ehdr)); - - if (unlikely (elf->state.elf.ehdr == NULL)) - { - __libelf_seterrno (ELF_E_WRONG_ORDER_EHDR); - result = -1; - } - else - { - Elf32_Word num; - - num = (elf->class == ELFCLASS32 - ? elf->state.elf32.ehdr->e_shstrndx - : elf->state.elf64.ehdr->e_shstrndx); - - /* Determine whether the index is too big to fit in the ELF - header. */ - if (unlikely (num == SHN_XINDEX)) - { - /* Yes. Search the zeroth section header. */ - if (elf->class == ELFCLASS32) - { - size_t offset; - if (unlikely (elf->state.elf32.scns.cnt == 0)) - { - /* Cannot use SHN_XINDEX without section headers. */ - __libelf_seterrno (ELF_E_INVALID_SECTION_HEADER); - result = -1; - goto out; - } - - if (elf->state.elf32.scns.data[0].shdr.e32 != NULL) - { - num = elf->state.elf32.scns.data[0].shdr.e32->sh_link; - goto success; - } - - offset = elf->state.elf32.ehdr->e_shoff; - - if (elf->map_address != NULL - && elf->state.elf32.ehdr->e_ident[EI_DATA] == MY_ELFDATA - && (ALLOW_UNALIGNED - || (((size_t) ((char *) elf->map_address - + elf->start_offset + offset)) - & (__alignof__ (Elf32_Shdr) - 1)) == 0)) - { - /* First see whether the information in the ELF header is - valid and it does not ask for too much. */ - if (unlikely (elf->maximum_size - offset - < sizeof (Elf32_Shdr))) - { - /* Something is wrong. */ - __libelf_seterrno (ELF_E_INVALID_SECTION_HEADER); - result = -1; - goto out; - } - - /* We can directly access the memory. */ - num = ((Elf32_Shdr *) (elf->map_address + elf->start_offset - + offset))->sh_link; - } - else - { - /* We avoid reading in all the section headers. Just read - the first one. */ - Elf32_Shdr shdr_mem; - - if (unlikely (pread_retry (elf->fildes, &shdr_mem, - sizeof (Elf32_Shdr), offset) - != sizeof (Elf32_Shdr))) - { - /* We must be able to read this ELF section header. */ - __libelf_seterrno (ELF_E_INVALID_FILE); - result = -1; - goto out; - } - - if (elf->state.elf32.ehdr->e_ident[EI_DATA] != MY_ELFDATA) - CONVERT (shdr_mem.sh_link); - num = shdr_mem.sh_link; - } - } - else - { - if (unlikely (elf->state.elf64.scns.cnt == 0)) - { - /* Cannot use SHN_XINDEX without section headers. */ - __libelf_seterrno (ELF_E_INVALID_SECTION_HEADER); - result = -1; - goto out; - } - - if (elf->state.elf64.scns.data[0].shdr.e64 != NULL) - { - num = elf->state.elf64.scns.data[0].shdr.e64->sh_link; - goto success; - } - - size_t offset = elf->state.elf64.ehdr->e_shoff; - - if (elf->map_address != NULL - && elf->state.elf64.ehdr->e_ident[EI_DATA] == MY_ELFDATA - && (ALLOW_UNALIGNED - || (((size_t) ((char *) elf->map_address - + elf->start_offset + offset)) - & (__alignof__ (Elf64_Shdr) - 1)) == 0)) - { - /* First see whether the information in the ELF header is - valid and it does not ask for too much. */ - if (unlikely (elf->maximum_size - offset - < sizeof (Elf64_Shdr))) - { - /* Something is wrong. */ - __libelf_seterrno (ELF_E_INVALID_SECTION_HEADER); - result = -1; - goto out; - } - - /* We can directly access the memory. */ - num = ((Elf64_Shdr *) (elf->map_address + elf->start_offset - + offset))->sh_link; - } - else - { - /* We avoid reading in all the section headers. Just read - the first one. */ - Elf64_Shdr shdr_mem; - - if (unlikely (pread_retry (elf->fildes, &shdr_mem, - sizeof (Elf64_Shdr), offset) - != sizeof (Elf64_Shdr))) - { - /* We must be able to read this ELF section header. */ - __libelf_seterrno (ELF_E_INVALID_FILE); - result = -1; - goto out; - } - - if (elf->state.elf64.ehdr->e_ident[EI_DATA] != MY_ELFDATA) - CONVERT (shdr_mem.sh_link); - num = shdr_mem.sh_link; - } - } - } - - /* Store the result. */ - success: - *dst = num; - } - - out: - rwlock_unlock (elf->lock); - - return result; -} -INTDEF(elf_getshdrstrndx) -/* Alias for the deprecated name. */ -strong_alias (elf_getshdrstrndx, elf_getshstrndx) |