verneed.h
245 lines
| 7.0 KiB
| text/x-c
|
CLexer
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r0 | /* | ||
* verneed.h - copy versioning information. | ||||
* Copyright (C) 2001 - 2006 Michael Riepe | ||||
* | ||||
* This library is free software; you can redistribute it and/or | ||||
* modify it under the terms of the GNU Library General Public | ||||
* License as published by the Free Software Foundation; either | ||||
* version 2 of the License, or (at your option) any later version. | ||||
* | ||||
* This library 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 | ||||
* Library General Public License for more details. | ||||
* | ||||
* You should have received a copy of the GNU Library General Public | ||||
* License along with this library; if not, write to the Free Software | ||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA | ||||
*/ | ||||
#ifndef lint | ||||
static const char verneed_h_rcsid[] = "@(#) $Id: verneed.h,v 1.13 2008/05/23 08:15:35 michael Exp $"; | ||||
#endif /* lint */ | ||||
#if VER_NEED_CURRENT != 1 | ||||
#error libelf currently does not support VER_NEED_CURRENT != 1 | ||||
#endif /* VER_NEED_CURRENT != 1 */ | ||||
#if TOFILE | ||||
static void | ||||
__store_vernaux(vernaux_ftype *dst, const vernaux_mtype *src, unsigned enc) { | ||||
if (enc == ELFDATA2LSB) { | ||||
__store_u32L(dst->vna_hash, src->vna_hash); | ||||
__store_u16L(dst->vna_flags, src->vna_flags); | ||||
__store_u16L(dst->vna_other, src->vna_other); | ||||
__store_u32L(dst->vna_name, src->vna_name); | ||||
__store_u32L(dst->vna_next, src->vna_next); | ||||
} | ||||
else { | ||||
__store_u32M(dst->vna_hash, src->vna_hash); | ||||
__store_u16M(dst->vna_flags, src->vna_flags); | ||||
__store_u16M(dst->vna_other, src->vna_other); | ||||
__store_u32M(dst->vna_name, src->vna_name); | ||||
__store_u32M(dst->vna_next, src->vna_next); | ||||
} | ||||
} | ||||
static void | ||||
__store_verneed(verneed_ftype *dst, const verneed_mtype *src, unsigned enc) { | ||||
if (enc == ELFDATA2LSB) { | ||||
__store_u16L(dst->vn_version, src->vn_version); | ||||
__store_u16L(dst->vn_cnt, src->vn_cnt); | ||||
__store_u32L(dst->vn_file, src->vn_file); | ||||
__store_u32L(dst->vn_aux, src->vn_aux); | ||||
__store_u32L(dst->vn_next, src->vn_next); | ||||
} | ||||
else { | ||||
__store_u16M(dst->vn_version, src->vn_version); | ||||
__store_u16M(dst->vn_cnt, src->vn_cnt); | ||||
__store_u32M(dst->vn_file, src->vn_file); | ||||
__store_u32M(dst->vn_aux, src->vn_aux); | ||||
__store_u32M(dst->vn_next, src->vn_next); | ||||
} | ||||
} | ||||
typedef vernaux_mtype vernaux_stype; | ||||
typedef vernaux_ftype vernaux_dtype; | ||||
typedef verneed_mtype verneed_stype; | ||||
typedef verneed_ftype verneed_dtype; | ||||
typedef align_mtype verneed_atype; | ||||
#define copy_vernaux_srctotmp(d, s, e) (*(d) = *(s)) | ||||
#define copy_vernaux_tmptodst(d, s, e) __store_vernaux((d), (s), (e)) | ||||
#define copy_verneed_srctotmp(d, s, e) (*(d) = *(s)) | ||||
#define copy_verneed_tmptodst(d, s, e) __store_verneed((d), (s), (e)) | ||||
#define translator_suffix _tof | ||||
#else /* TOFILE */ | ||||
static void | ||||
__load_vernaux(vernaux_mtype *dst, const vernaux_ftype *src, unsigned enc) { | ||||
if (enc == ELFDATA2LSB) { | ||||
dst->vna_hash = __load_u32L(src->vna_hash); | ||||
dst->vna_flags = __load_u16L(src->vna_flags); | ||||
dst->vna_other = __load_u16L(src->vna_other); | ||||
dst->vna_name = __load_u32L(src->vna_name); | ||||
dst->vna_next = __load_u32L(src->vna_next); | ||||
} | ||||
else { | ||||
dst->vna_hash = __load_u32M(src->vna_hash); | ||||
dst->vna_flags = __load_u16M(src->vna_flags); | ||||
dst->vna_other = __load_u16M(src->vna_other); | ||||
dst->vna_name = __load_u32M(src->vna_name); | ||||
dst->vna_next = __load_u32M(src->vna_next); | ||||
} | ||||
} | ||||
static void | ||||
__load_verneed(verneed_mtype *dst, const verneed_ftype *src, unsigned enc) { | ||||
if (enc == ELFDATA2LSB) { | ||||
dst->vn_version = __load_u16L(src->vn_version); | ||||
dst->vn_cnt = __load_u16L(src->vn_cnt); | ||||
dst->vn_file = __load_u32L(src->vn_file); | ||||
dst->vn_aux = __load_u32L(src->vn_aux); | ||||
dst->vn_next = __load_u32L(src->vn_next); | ||||
} | ||||
else { | ||||
dst->vn_version = __load_u16M(src->vn_version); | ||||
dst->vn_cnt = __load_u16M(src->vn_cnt); | ||||
dst->vn_file = __load_u32M(src->vn_file); | ||||
dst->vn_aux = __load_u32M(src->vn_aux); | ||||
dst->vn_next = __load_u32M(src->vn_next); | ||||
} | ||||
} | ||||
typedef vernaux_ftype vernaux_stype; | ||||
typedef vernaux_mtype vernaux_dtype; | ||||
typedef verneed_ftype verneed_stype; | ||||
typedef verneed_mtype verneed_dtype; | ||||
typedef align_ftype verneed_atype; | ||||
#define copy_vernaux_srctotmp(d, s, e) __load_vernaux((d), (s), (e)) | ||||
#define copy_vernaux_tmptodst(d, s, e) (*(d) = *(s)) | ||||
#define copy_verneed_srctotmp(d, s, e) __load_verneed((d), (s), (e)) | ||||
#define copy_verneed_tmptodst(d, s, e) (*(d) = *(s)) | ||||
#define translator_suffix _tom | ||||
#endif /* TOFILE */ | ||||
#define cat3(a,b,c) a##b##c | ||||
#define xlt3(p,e,s) cat3(p,e,s) | ||||
#define xltprefix(x) xlt3(x,_,class_suffix) | ||||
#define translator(x,e) xlt3(xltprefix(_elf_##x),e,translator_suffix) | ||||
static size_t | ||||
xlt_verneed(unsigned char *dst, const unsigned char *src, size_t n, unsigned enc) { | ||||
size_t off; | ||||
if (sizeof(verneed_stype) != sizeof(verneed_dtype) | ||||
|| sizeof(vernaux_stype) != sizeof(vernaux_dtype)) { | ||||
/* never happens for ELF v1 and Verneed v1 */ | ||||
seterr(ERROR_UNIMPLEMENTED); | ||||
return (size_t)-1; | ||||
} | ||||
/* size translation shortcut */ | ||||
if (dst == NULL) { | ||||
return n; | ||||
} | ||||
if (src == NULL) { | ||||
seterr(ERROR_NULLBUF); | ||||
return (size_t)-1; | ||||
} | ||||
off = 0; | ||||
while (off + sizeof(verneed_stype) <= n) { | ||||
const verneed_stype *svn; | ||||
verneed_dtype *dvn; | ||||
verneed_mtype vn; | ||||
size_t acount; | ||||
size_t aoff; | ||||
/* | ||||
* check for proper alignment | ||||
*/ | ||||
if (off % sizeof(verneed_atype)) { | ||||
seterr(ERROR_VERNEED_FORMAT); | ||||
return (size_t)-1; | ||||
} | ||||
/* | ||||
* copy and check src | ||||
*/ | ||||
svn = (verneed_stype*)(src + off); | ||||
dvn = (verneed_dtype*)(dst + off); | ||||
copy_verneed_srctotmp(&vn, svn, enc); | ||||
if (vn.vn_version < 1 | ||||
|| vn.vn_version > VER_NEED_CURRENT) { | ||||
seterr(ERROR_VERNEED_VERSION); | ||||
return (size_t)-1; | ||||
} | ||||
if (vn.vn_cnt < 1 | ||||
|| vn.vn_aux == 0) { | ||||
seterr(ERROR_VERNEED_FORMAT); | ||||
return (size_t)-1; | ||||
} | ||||
copy_verneed_tmptodst(dvn, &vn, enc); | ||||
/* | ||||
* copy aux array | ||||
*/ | ||||
aoff = off + vn.vn_aux; | ||||
for (acount = 0; acount < vn.vn_cnt; acount++) { | ||||
const vernaux_stype *svna; | ||||
vernaux_dtype *dvna; | ||||
vernaux_mtype vna; | ||||
/* | ||||
* are we still inside the buffer limits? | ||||
*/ | ||||
if (aoff + sizeof(vernaux_stype) > n) { | ||||
break; | ||||
} | ||||
/* | ||||
* check for proper alignment | ||||
*/ | ||||
if (aoff % sizeof(verneed_atype)) { | ||||
seterr(ERROR_VERNEED_FORMAT); | ||||
return (size_t)-1; | ||||
} | ||||
/* | ||||
* copy and check src | ||||
*/ | ||||
svna = (vernaux_stype*)(src + aoff); | ||||
dvna = (vernaux_dtype*)(dst + aoff); | ||||
copy_vernaux_srctotmp(&vna, svna, enc); | ||||
copy_vernaux_tmptodst(dvna, &vna, enc); | ||||
/* | ||||
* advance to next vernaux | ||||
*/ | ||||
if (vna.vna_next == 0) { | ||||
/* end of list */ | ||||
break; | ||||
} | ||||
aoff += vna.vna_next; | ||||
} | ||||
/* | ||||
* advance to next verneed | ||||
*/ | ||||
if (vn.vn_next == 0) { | ||||
/* end of list */ | ||||
break; | ||||
} | ||||
off += vn.vn_next; | ||||
} | ||||
return n; | ||||
} | ||||
size_t | ||||
translator(verneed,L11)(unsigned char *dst, const unsigned char *src, size_t n) { | ||||
return xlt_verneed(dst, src, n, ELFDATA2LSB); | ||||
} | ||||
size_t | ||||
translator(verneed,M11)(unsigned char *dst, const unsigned char *src, size_t n) { | ||||
return xlt_verneed(dst, src, n, ELFDATA2MSB); | ||||
} | ||||