10Sstevel@tonic-gate /* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*3153Sdg199075 * Common Development and Distribution License (the "License"). 6*3153Sdg199075 * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 210Sstevel@tonic-gate /* 22*3153Sdg199075 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 230Sstevel@tonic-gate * Use is subject to license terms. 240Sstevel@tonic-gate */ 250Sstevel@tonic-gate 260Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 270Sstevel@tonic-gate 280Sstevel@tonic-gate #include <sys/types.h> 290Sstevel@tonic-gate #include <string.h> 300Sstevel@tonic-gate #include <stdio.h> 310Sstevel@tonic-gate #include <stdlib.h> 320Sstevel@tonic-gate #include <dlfcn.h> 330Sstevel@tonic-gate #include <apptrace.h> 340Sstevel@tonic-gate #include <assert.h> 350Sstevel@tonic-gate #include "abienv.h" 360Sstevel@tonic-gate 370Sstevel@tonic-gate #define NOTID 0xffffffff 380Sstevel@tonic-gate 390Sstevel@tonic-gate /* 400Sstevel@tonic-gate * This file is meant to contain support functions 410Sstevel@tonic-gate * for interceptors. They are built into the auditing 420Sstevel@tonic-gate * object making the namespace available to "children" 430Sstevel@tonic-gate * objects. 440Sstevel@tonic-gate */ 450Sstevel@tonic-gate 460Sstevel@tonic-gate static lwp_mutex_t abi_stdio_mutex = DEFAULTMUTEX; 470Sstevel@tonic-gate static volatile thread_t locktid = NOTID; 480Sstevel@tonic-gate static volatile int count; 490Sstevel@tonic-gate 500Sstevel@tonic-gate /* Return true on empty */ 510Sstevel@tonic-gate int is_empty_string(char const * s)520Sstevel@tonic-gateis_empty_string(char const *s) 530Sstevel@tonic-gate { 540Sstevel@tonic-gate if (s != NULL && *s != '\0') 550Sstevel@tonic-gate return (0); 560Sstevel@tonic-gate 570Sstevel@tonic-gate return (1); 580Sstevel@tonic-gate } 590Sstevel@tonic-gate 600Sstevel@tonic-gate void abilock(sigset_t * mask)610Sstevel@tonic-gateabilock(sigset_t *mask) 620Sstevel@tonic-gate { 630Sstevel@tonic-gate thread_t tid; 640Sstevel@tonic-gate 650Sstevel@tonic-gate if ((*abi_thr_main)() != -1) { 660Sstevel@tonic-gate tid = (*abi_thr_self)(); 670Sstevel@tonic-gate 680Sstevel@tonic-gate if (tid == locktid) { 690Sstevel@tonic-gate count++; 700Sstevel@tonic-gate } else { 710Sstevel@tonic-gate (void) _lwp_mutex_lock(&abi_stdio_mutex); 720Sstevel@tonic-gate (void) sigprocmask(SIG_BLOCK, &abisigset, mask); 730Sstevel@tonic-gate locktid = tid; 740Sstevel@tonic-gate count = 1; 750Sstevel@tonic-gate } 760Sstevel@tonic-gate } 770Sstevel@tonic-gate } 780Sstevel@tonic-gate 790Sstevel@tonic-gate void abiunlock(sigset_t * mask)800Sstevel@tonic-gateabiunlock(sigset_t *mask) 810Sstevel@tonic-gate { 820Sstevel@tonic-gate thread_t tid; 830Sstevel@tonic-gate 840Sstevel@tonic-gate (void) fflush(ABISTREAM); 850Sstevel@tonic-gate 860Sstevel@tonic-gate if ((*abi_thr_main)() != -1) { 870Sstevel@tonic-gate tid = (*abi_thr_self)(); 880Sstevel@tonic-gate assert(tid == locktid); 890Sstevel@tonic-gate count--; 900Sstevel@tonic-gate if (count <= 0) { 910Sstevel@tonic-gate count = 0; 920Sstevel@tonic-gate locktid = NOTID; 930Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, mask, NULL); 940Sstevel@tonic-gate (void) _lwp_mutex_unlock(&abi_stdio_mutex); 950Sstevel@tonic-gate } 960Sstevel@tonic-gate } 970Sstevel@tonic-gate } 98