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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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <apptrace.h>
#include <assert.h>
#include "abienv.h"
#define NOTID 0xffffffff
/*
* This file is meant to contain support functions
* for interceptors. They are built into the auditing
* object making the namespace available to "children"
* objects.
*/
static lwp_mutex_t abi_stdio_mutex = DEFAULTMUTEX;
static volatile thread_t locktid = NOTID;
static volatile int count;
/* Return true on empty */
int
is_empty_string(char const *s)
{
if (s != NULL && *s != '\0')
return (0);
return (1);
}
void
abilock(sigset_t *mask)
{
thread_t tid;
if ((*abi_thr_main)() != -1) {
tid = (*abi_thr_self)();
if (tid == locktid) {
count++;
} else {
(void) _lwp_mutex_lock(&abi_stdio_mutex);
(void) sigprocmask(SIG_BLOCK, &abisigset, mask);
locktid = tid;
count = 1;
}
}
}
void
abiunlock(sigset_t *mask)
{
thread_t tid;
(void) fflush(ABISTREAM);
if ((*abi_thr_main)() != -1) {
tid = (*abi_thr_self)();
assert(tid == locktid);
count--;
if (count <= 0) {
count = 0;
locktid = NOTID;
(void) sigprocmask(SIG_SETMASK, mask, NULL);
(void) _lwp_mutex_unlock(&abi_stdio_mutex);
}
}
}
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