/*+
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 * getarsym.c - implementation of the elf_getarsym(3) function.+
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 * Copyright (C) 1995 - 1998, 2004 Michael Riepe+
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 *+
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 * This library is free software; you can redistribute it and/or+
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 * modify it under the terms of the GNU Library General Public+
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 * License as published by the Free Software Foundation; either+
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 * version 2 of the License, or (at your option) any later version.+
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 *+
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 * This library is distributed in the hope that it will be useful,+
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of+
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU+
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 * Library General Public License for more details.+
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 *+
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 * You should have received a copy of the GNU Library General Public+
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 * License along with this library; if not, write to the Free Software+
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA+
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 */+
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+
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#include <private.h>+
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#include <byteswap.h>+
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+
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#ifndef lint+
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static const char rcsid[] = "@(#) $Id: getarsym.c,v 1.8 2005/05/21 15:39:23 michael Exp $";+
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#endif /* lint */+
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+
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Elf_Arsym*+
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elf_getarsym(Elf *elf, size_t *ptr) {+
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    Elf_Arsym *syms;+
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    size_t count;+
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    size_t tmp;+
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    size_t i;+
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    char *s;+
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    char *e;+
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+
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    if (!ptr) {+
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	ptr = &tmp;+
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    }+
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    *ptr = 0;+
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    if (!elf) {+
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	return NULL;+
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    }+
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    elf_assert(elf->e_magic == ELF_MAGIC);+
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    if (elf->e_kind != ELF_K_AR) {+
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	seterr(ERROR_NOTARCHIVE);+
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	return NULL;+
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    }+
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    if (elf->e_symtab && !elf->e_free_syms) {+
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	if (elf->e_symlen < 4) {+
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	    seterr(ERROR_SIZE_ARSYMTAB);+
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	    return NULL;+
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	}+
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	count = __load_u32M(elf->e_symtab);+
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	if (elf->e_symlen < 4 * (count + 1)) {+
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	    seterr(ERROR_SIZE_ARSYMTAB);+
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	    return NULL;+
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	}+
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	if (!(syms = (Elf_Arsym*)malloc((count + 1) * sizeof(*syms)))) {+
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	    seterr(ERROR_MEM_ARSYMTAB);+
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	    return NULL;+
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	}+
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	s = elf->e_symtab + 4 * (count + 1);+
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	e = elf->e_symtab + elf->e_symlen;+
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	for (i = 0; i < count; i++, s++) {+
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	    syms[i].as_name = s;+
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	    while (s < e && *s) {+
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		s++;+
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	    }+
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	    if (s >= e) {+
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		seterr(ERROR_SIZE_ARSYMTAB);+
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		free(syms);+
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		return NULL;+
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	    }+
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	    elf_assert(!*s);+
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	    syms[i].as_hash = elf_hash((unsigned char*)syms[i].as_name);+
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	    syms[i].as_off = __load_u32M(elf->e_symtab + 4 * (i + 1));+
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	}+
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	syms[count].as_name = NULL;+
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	syms[count].as_hash = ~0UL;+
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	syms[count].as_off = 0;+
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	elf->e_symtab = (char*)syms;+
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	elf->e_symlen = count + 1;+
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	elf->e_free_syms = 1;+
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    }+
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    *ptr = elf->e_symlen;+
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    return (Elf_Arsym*)elf->e_symtab;+
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}+
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