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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 <unistd.h>
#include <strings.h>
#include <limits.h>
#include <dlfcn.h>
#include "_conv.h"
#include "lddstub_msg.h"
static int
originlddstub(char *buffer, const char *orgfile)
{
int len;
if (dlinfo(RTLD_SELF, RTLD_DI_ORIGIN, (void *)buffer) == -1)
return (-1);
if (strlcat(buffer, orgfile, PATH_MAX) >= PATH_MAX)
return (-1);
if ((len = resolvepath(buffer, buffer, (PATH_MAX - 1))) == -1)
return (-1);
buffer[len] = '\0';
if (access(buffer, X_OK) == -1)
return (-1);
return (1);
}
static char orgstub[PATH_MAX], orgstub64[PATH_MAX];
static int orgflag, orgflag64;
/*
* Determine what lddstub to run.
*/
const char *
conv_lddstub(int class)
{
const char *stub;
/*
* Establish defaults.
*/
if (class == ELFCLASS32)
stub = MSG_ORIG(MSG_PTH_LDDSTUB);
else
stub = MSG_ORIG(MSG_PTH_LDDSTUB_64);
/*
* Provided we're not secure, determine lddstub's location from our
* own origin.
*/
if (geteuid()) {
if ((class == ELFCLASS32) && (orgflag != -1)) {
if (orgflag == 0) {
/* BEGIN CSTYLED */
if ((orgflag = originlddstub(orgstub,
#ifdef _LP64
MSG_ORIG(MSG_ORG_64LDD_32STUB))) == -1)
#else
MSG_ORIG(MSG_ORG_32LDD_32STUB))) == -1)
#endif
return (stub);
/* END CSTYLED */
}
stub = (const char *)orgstub;
}
if ((class == ELFCLASS64) && (orgflag64 != -1)) {
if (orgflag64 == 0) {
/* BEGIN CSTYLED */
if ((orgflag64 = originlddstub(orgstub64,
#ifdef _LP64
MSG_ORIG(MSG_ORG_64LDD_64STUB))) == -1)
#else
MSG_ORIG(MSG_ORG_32LDD_64STUB))) == -1)
#endif
return (stub);
/* END CSTYLED */
}
stub = (const char *)orgstub64;
}
}
return (stub);
}
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