diff options
Diffstat (limited to 'src/libelf/elf_getphdrnum.c')
-rw-r--r-- | src/libelf/elf_getphdrnum.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/src/libelf/elf_getphdrnum.c b/src/libelf/elf_getphdrnum.c deleted file mode 100644 index 63c27fb1..00000000 --- a/src/libelf/elf_getphdrnum.c +++ /dev/null @@ -1,136 +0,0 @@ -/* Return number of program headers in the ELF file. - Copyright (C) 2010, 2014 Red Hat, Inc. - This file is part of elfutils. - - 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 <gelf.h> -#include <stddef.h> - -#include "libelfP.h" - - -int -__elf_getphdrnum_rdlock (elf, dst) - Elf *elf; - size_t *dst; -{ - if (unlikely (elf->state.elf64.ehdr == NULL)) - { - /* Maybe no ELF header was created yet. */ - __libelf_seterrno (ELF_E_WRONG_ORDER_EHDR); - return -1; - } - - *dst = (elf->class == ELFCLASS32 - ? elf->state.elf32.ehdr->e_phnum - : elf->state.elf64.ehdr->e_phnum); - - if (*dst == PN_XNUM) - { - const Elf_ScnList *const scns = (elf->class == ELFCLASS32 - ? &elf->state.elf32.scns - : &elf->state.elf64.scns); - - /* If there are no section headers, perhaps this is really just 65536 - written without PN_XNUM support. Either that or it's bad data. */ - - if (elf->class == ELFCLASS32) - { - if (likely (scns->cnt > 0 - && elf->state.elf32.scns.data[0].shdr.e32 != NULL)) - *dst = scns->data[0].shdr.e32->sh_info; - } - else - { - if (likely (scns->cnt > 0 - && elf->state.elf64.scns.data[0].shdr.e64 != NULL)) - *dst = scns->data[0].shdr.e64->sh_info; - } - } - - return 0; -} - -int -elf_getphdrnum (elf, dst) - Elf *elf; - size_t *dst; -{ - int result; - - if (elf == NULL) - return -1; - - if (unlikely (elf->kind != ELF_K_ELF)) - { - __libelf_seterrno (ELF_E_INVALID_HANDLE); - return -1; - } - - rwlock_rdlock (elf->lock); - result = __elf_getphdrnum_rdlock (elf, dst); - - /* Do some sanity checking to make sure phnum and phoff are consistent. */ - Elf64_Off off = (elf->class == ELFCLASS32 - ? elf->state.elf32.ehdr->e_phoff - : elf->state.elf64.ehdr->e_phoff); - if (unlikely (off == 0)) - { - *dst = 0; - goto out; - } - - if (unlikely (off >= elf->maximum_size)) - { - __libelf_seterrno (ELF_E_INVALID_DATA); - result = -1; - goto out; - } - - /* Check for too many sections. */ - size_t phdr_size = (elf->class == ELFCLASS32 - ? sizeof (Elf32_Phdr) : sizeof (Elf64_Phdr)); - if (unlikely (*dst > SIZE_MAX / phdr_size)) - { - __libelf_seterrno (ELF_E_INVALID_DATA); - result = -1; - goto out; - } - - /* Truncated file? Don't return more than can be indexed. */ - if (unlikely (elf->maximum_size - off < *dst * phdr_size)) - *dst = (elf->maximum_size - off) / phdr_size; - -out: - rwlock_unlock (elf->lock); - - return result; -} |