/*-
* 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 <sys/limits.h>
#include <assert.h>
#include <gelf.h>
#include <osreldate.h>
#include "_libelf.h"
#if __FreeBSD_version >= 700025
GElf_Cap *
gelf_getcap(Elf_Data *d, int ndx, GElf_Cap *dst)
{
int ec;
Elf *e;
Elf_Scn *scn;
Elf32_Cap *cap32;
Elf64_Cap *cap64;
size_t msz;
uint32_t sh_type;
if (d == NULL || ndx < 0 || dst == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (NULL);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_CAP) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (NULL);
}
msz = _libelf_msize(ELF_T_CAP, ec, e->e_version);
assert(msz > 0);
if (msz * ndx >= d->d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (NULL);
}
if (ec == ELFCLASS32) {
cap32 = (Elf32_Cap *) d->d_buf + ndx;
dst->c_tag = cap32->c_tag;
dst->c_un.c_val = (Elf64_Xword) cap32->c_un.c_val;
} else {
cap64 = (Elf64_Cap *) d->d_buf + ndx;
*dst = *cap64;
}
return (dst);
}
int
gelf_update_cap(Elf_Data *d, int ndx, GElf_Cap *gc)
{
int ec;
Elf *e;
Elf_Scn *scn;
Elf32_Cap *cap32;
Elf64_Cap *cap64;
size_t msz;
uint32_t sh_type;
if (d == NULL || ndx < 0 || gc == NULL ||
(scn = d->d_scn) == NULL ||
(e = scn->s_elf) == NULL) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
ec = e->e_class;
assert(ec == ELFCLASS32 || ec == ELFCLASS64);
if (ec == ELFCLASS32)
sh_type = scn->s_shdr.s_shdr32.sh_type;
else
sh_type = scn->s_shdr.s_shdr64.sh_type;
if (_libelf_xlate_shtype(sh_type) != ELF_T_CAP) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
msz = _libelf_msize(ELF_T_CAP, ec, e->e_version);
assert(msz > 0);
if (msz * ndx >= d->d_size) {
LIBELF_SET_ERROR(ARGUMENT, 0);
return (0);
}
if (ec == ELFCLASS32) {
cap32 = (Elf32_Cap *) d->d_buf + ndx;
LIBELF_COPY_U32(cap32, gc, c_tag);
LIBELF_COPY_U32(cap32, gc, c_un.c_val);
} else {
cap64 = (Elf64_Cap *) d->d_buf + ndx;
*cap64 = *gc;
}
return (1);
}
#endif /* __FreeBSD_version >= 700025 */
