| /* |
| cntl.c - implementation of the elf_cntl(3) function. |
| Copyright (C) 1995 - 1998 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 |
| */ |
| |
| #include <private.h> |
| |
| #ifndef lint |
| static const char rcsid[] = "@(#) $Id: cntl.c,v 1.7 2008/05/23 08:15:34 michael Exp $"; |
| #endif /* lint */ |
| |
| 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 (cmd == ELF_C_FDREAD) { |
| if (!elf->e_readable) { |
| seterr(ERROR_WRONLY); |
| return -1; |
| } |
| } |
| else if (cmd != ELF_C_FDDONE) { |
| seterr(ERROR_INVALID_CMD); |
| return -1; |
| } |
| if (elf->e_disabled) { |
| return 0; |
| } |
| if (elf->e_kind == ELF_K_AR) { |
| for (child = elf->e_members; child; child = child->e_link) { |
| elf_assert(elf == child->e_parent); |
| if (elf_cntl(child, cmd)) { |
| return -1; |
| } |
| } |
| } |
| else if (elf->e_kind == ELF_K_ELF && cmd == ELF_C_FDREAD) { |
| 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; |
| } |
| } |
| } |
| elf->e_disabled = 1; |
| return 0; |
| } |
