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head/contrib/elftoolchain/libelf/libelf_chdr.c
Property | Old Value | New Value |
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svn:eol-style | null | native \ No newline at end of property |
svn:keywords | null | FreeBSD=%H \ No newline at end of property |
svn:mime-type | null | text/plain \ No newline at end of property |
/*- | |||||
* SPDX-License-Identifier: BSD-2-Clause | |||||
* | |||||
* Copyright (c) 2020 The FreeBSD Foundation | |||||
* | |||||
* This software was developed by Tiger Gao under sponsorship from | |||||
* the FreeBSD Foundation. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions are | |||||
* met: | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in | |||||
* the documentation and/or other materials provided with the distribution. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||||
* SUCH DAMAGE. | |||||
*/ | |||||
#include <gelf.h> | |||||
#include <libelf.h> | |||||
#include "_libelf.h" | |||||
void * | |||||
_libelf_getchdr(Elf_Scn *s, int ec) | |||||
{ | |||||
Elf *e; | |||||
void *sh; | |||||
Elf32_Shdr *sh32; | |||||
Elf64_Shdr *sh64; | |||||
sh32 = NULL; | |||||
sh64 = NULL; | |||||
if (s == NULL || (e = s->s_elf) == NULL || e->e_kind != ELF_K_ELF) { | |||||
LIBELF_SET_ERROR(ARGUMENT, 0); | |||||
return (NULL); | |||||
} | |||||
if (ec == ELFCLASSNONE) { | |||||
ec = e->e_class; | |||||
} else if (ec != e->e_class) { | |||||
LIBELF_SET_ERROR(CLASS, 0); | |||||
return (NULL); | |||||
} | |||||
if ((sh = _libelf_getshdr(s, ec)) == NULL) { | |||||
LIBELF_SET_ERROR(HEADER, 0); | |||||
return (NULL); | |||||
} | |||||
if (ec == ELFCLASS32) { | |||||
sh32 = (Elf32_Shdr *)sh; | |||||
if ((sh32->sh_flags & SHF_ALLOC) != 0) { | |||||
LIBELF_SET_ERROR(INVALID_SECTION_FLAGS, 0); | |||||
return (NULL); | |||||
} | |||||
if (sh32->sh_type == SHT_NULL || sh32->sh_type == SHT_NOBITS) { | |||||
LIBELF_SET_ERROR(INVALID_SECTION_TYPE, 0); | |||||
return (NULL); | |||||
} | |||||
if ((sh32->sh_flags & SHF_COMPRESSED) == 0) { | |||||
LIBELF_SET_ERROR(NOT_COMPRESSED, 0); | |||||
return (NULL); | |||||
} | |||||
} else { | |||||
sh64 = (Elf64_Shdr *)sh; | |||||
if ((sh64->sh_flags & SHF_ALLOC) != 0) { | |||||
LIBELF_SET_ERROR(INVALID_SECTION_FLAGS, 0); | |||||
return (NULL); | |||||
} | |||||
if (sh64->sh_type == SHT_NULL || sh64->sh_type == SHT_NOBITS) { | |||||
LIBELF_SET_ERROR(INVALID_SECTION_TYPE, 0); | |||||
return (NULL); | |||||
} | |||||
if ((sh64->sh_flags & SHF_COMPRESSED) == 0) { | |||||
LIBELF_SET_ERROR(NOT_COMPRESSED, 0); | |||||
return (NULL); | |||||
} | |||||
} | |||||
Elf_Data *d = elf_getdata(s, NULL); | |||||
if (!d) | |||||
return (NULL); | |||||
return ((void *)d->d_buf); | |||||
} |