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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <string.h>
#include <gelf.h>
#include <decl.h>
#include <msg.h>
/*
* Return number of entries in the program header array, taking
* extended headers into account.
*
* elf_getphnum() was defined based on the definition of the earlier
* elf_getshnum(). It returns 0 for failure, and 1 for success.
*
* elf_getphdrnum() supercedes elf_getphnum(), which is now considered
* obsolete. It returns -1 for failure and 0 for success, matching
* elf_getshdrnum(), and bringing us into alignment with the interface
* agreed to in the 2002 gABI meeting.
*
* See the comment in getshnum.c for additional information.
*/
int
elf_getphdrnum(Elf *elf, size_t *phnum)
{
GElf_Ehdr ehdr;
Elf_Scn *scn;
GElf_Shdr shdr0;
if (gelf_getehdr(elf, &ehdr) == NULL)
return (-1);
if (ehdr.e_phnum != PN_XNUM) {
*phnum = ehdr.e_phnum;
return (0);
}
if ((scn = elf_getscn(elf, 0)) == NULL ||
gelf_getshdr(scn, &shdr0) == NULL)
return (-1);
if (shdr0.sh_info == 0)
*phnum = ehdr.e_phnum;
else
*phnum = shdr0.sh_info;
return (0);
}
int
elf_getphnum(Elf *elf, size_t *phnum)
{
return (elf_getphdrnum(elf, phnum) == 0);
}
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