mirror of
https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
synced 2024-11-27 11:20:58 +01:00
70 lines
2.5 KiB
C
70 lines
2.5 KiB
C
/*
|
|
* Copyright (c) Christos Zoulas 2008.
|
|
* All Rights Reserved.
|
|
*
|
|
* 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 immediately at the beginning of the file, without modification,
|
|
* 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.
|
|
*/
|
|
if (nbytes <= sizeof(elfhdr))
|
|
return 0;
|
|
|
|
u.l = 1;
|
|
(void)memcpy(&elfhdr, buf, sizeof elfhdr);
|
|
swap = (u.c[sizeof(int32_t) - 1] + 1) != elfhdr.e_ident[EI_DATA];
|
|
|
|
type = elf_getu16(swap, elfhdr.e_type);
|
|
switch (type) {
|
|
#ifdef ELFCORE
|
|
case ET_CORE:
|
|
if (dophn_core(ms, clazz, swap, fd,
|
|
(off_t)elf_getu(swap, elfhdr.e_phoff),
|
|
elf_getu16(swap, elfhdr.e_phnum),
|
|
(size_t)elf_getu16(swap, elfhdr.e_phentsize),
|
|
fsize, &flags) == -1)
|
|
return -1;
|
|
break;
|
|
#endif
|
|
case ET_EXEC:
|
|
case ET_DYN:
|
|
if (dophn_exec(ms, clazz, swap, fd,
|
|
(off_t)elf_getu(swap, elfhdr.e_phoff),
|
|
elf_getu16(swap, elfhdr.e_phnum),
|
|
(size_t)elf_getu16(swap, elfhdr.e_phentsize),
|
|
fsize, &flags, elf_getu16(swap, elfhdr.e_shnum))
|
|
== -1)
|
|
return -1;
|
|
/*FALLTHROUGH*/
|
|
case ET_REL:
|
|
if (doshn(ms, clazz, swap, fd,
|
|
(off_t)elf_getu(swap, elfhdr.e_shoff),
|
|
elf_getu16(swap, elfhdr.e_shnum),
|
|
(size_t)elf_getu16(swap, elfhdr.e_shentsize),
|
|
&flags,
|
|
elf_getu16(swap, elfhdr.e_machine)) == -1)
|
|
return -1;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return 1;
|