/*

flag.c - implementation of the elf_flag*(3) functions.

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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

#include <private.h>

#ifndef lint

static const char rcsid[] = "@(#) $Id: flag.c,v 1.6 2005/05/21 15:39:22 michael Exp $";

#endif /* lint */

static unsigned

_elf_flag(unsigned *f, Elf_Cmd cmd, unsigned flags) {

    if (cmd == ELF_C_SET) {

	return *f |= flags;

    }

    if (cmd == ELF_C_CLR) {

	return *f &= ~flags;

    }

    seterr(ERROR_INVALID_CMD);

    return 0;

}

unsigned

elf_flagdata(Elf_Data *data, Elf_Cmd cmd, unsigned flags) {

    Scn_Data *sd = (Scn_Data*)data;

    if (!sd) {

	return 0;

    }

    elf_assert(sd->sd_magic == DATA_MAGIC);

    return _elf_flag(&sd->sd_data_flags, cmd, flags);

}

unsigned

elf_flagehdr(Elf *elf, Elf_Cmd cmd, unsigned flags) {

    if (!elf) {

	return 0;

    }

    elf_assert(elf->e_magic == ELF_MAGIC);

    return _elf_flag(&elf->e_ehdr_flags, cmd, flags);

}

unsigned

elf_flagelf(Elf *elf, Elf_Cmd cmd, unsigned flags) {

    if (!elf) {

	return 0;

    }

    elf_assert(elf->e_magic == ELF_MAGIC);

    return _elf_flag(&elf->e_elf_flags, cmd, flags);

}

unsigned

elf_flagphdr(Elf *elf, Elf_Cmd cmd, unsigned flags) {

    if (!elf) {

	return 0;

    }

    elf_assert(elf->e_magic == ELF_MAGIC);

    return _elf_flag(&elf->e_phdr_flags, cmd, flags);

}

unsigned

elf_flagscn(Elf_Scn *scn, Elf_Cmd cmd, unsigned flags) {

    if (!scn) {

	return 0;

    }

    elf_assert(scn->s_magic == SCN_MAGIC);

    return _elf_flag(&scn->s_scn_flags, cmd, flags);

}

unsigned

elf_flagshdr(Elf_Scn *scn, Elf_Cmd cmd, unsigned flags) {

    if (!scn) {

	return 0;

    }

    elf_assert(scn->s_magic == SCN_MAGIC);

    return _elf_flag(&scn->s_shdr_flags, cmd, flags);

}