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/*
cntl.c - implementation of the elf_cntl(3) function.
Copyright (C) 1995 Michael Riepe <riepe@ifwsn4.ifw.uni-hannover.de>
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <private.h>
int
elf_cntl(Elf *elf, Elf_Cmd cmd) {
Elf_Scn *scn;
Elf *child;
if (!elf) {
return -1;
}
elf_assert(elf->e_magic == ELF_MAGIC);
if (elf->e_disabled) {
return 0;
}
if (cmd == ELF_C_FDREAD) {
if (!elf->e_readable) {
seterr(ERROR_WRONLY);
return -1;
}
if (!elf->e_size) {
return 0;
}
if (!elf->e_ehdr && !_elf_cook(elf)) {
return -1;
}
for (scn = elf->e_scn_1; scn; scn = scn->s_link) {
if (scn->s_index == SHN_UNDEF || scn->s_type == SHT_NULL) {
continue;
}
else if (!elf_getdata(scn, NULL)) {
return -1;
}
}
}
else if (cmd != ELF_C_FDDONE) {
seterr(ERROR_INVALID_CMD);
return -1;
}
elf->e_disabled = 1;
for (child = elf->e_members; child; child = child->e_link) {
elf_assert(elf->e_kind == ELF_K_AR);
elf_assert(elf == child->e_parent);
if (elf_cntl(child, cmd)) {
return -1;
}
}
return 0;
}
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