mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-27 11:55:06 +00:00
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*-
|
|
* Copyright (c) 2006 Joseph Koshy
|
|
* 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, 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <ar.h>
|
|
#include <libelf.h>
|
|
|
|
#include "_libelf.h"
|
|
|
|
off_t
|
|
elf_rand(Elf *ar, off_t offset)
|
|
{
|
|
struct ar_hdr *arh;
|
|
|
|
if (ar == NULL || ar->e_kind != ELF_K_AR ||
|
|
(offset & 1) || offset < SARMAG ||
|
|
offset + sizeof(struct ar_hdr) >= ar->e_rawsize) {
|
|
LIBELF_SET_ERROR(ARGUMENT, 0);
|
|
return 0;
|
|
}
|
|
|
|
arh = (struct ar_hdr *) (ar->e_rawfile + offset);
|
|
|
|
/* a too simple sanity check */
|
|
if (arh->ar_fmag[0] != '`' || arh->ar_fmag[1] != '\n') {
|
|
LIBELF_SET_ERROR(ARCHIVE, 0);
|
|
return 0;
|
|
}
|
|
|
|
ar->e_u.e_ar.e_next = offset;
|
|
|
|
return (offset);
|
|
}
|