17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*adecd3c6Sdg * Common Development and Distribution License (the "License"). 6*adecd3c6Sdg * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*adecd3c6Sdg * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate #include <sys/types.h> 277c478bd9Sstevel@tonic-gate #include <string.h> 287c478bd9Sstevel@tonic-gate #include <stdio.h> 297c478bd9Sstevel@tonic-gate #include <stdlib.h> 307c478bd9Sstevel@tonic-gate #include <dlfcn.h> 317c478bd9Sstevel@tonic-gate #include <apptrace.h> 327c478bd9Sstevel@tonic-gate #include <assert.h> 337c478bd9Sstevel@tonic-gate #include "abienv.h" 347c478bd9Sstevel@tonic-gate 357c478bd9Sstevel@tonic-gate #define NOTID 0xffffffff 367c478bd9Sstevel@tonic-gate 377c478bd9Sstevel@tonic-gate /* 387c478bd9Sstevel@tonic-gate * This file is meant to contain support functions 397c478bd9Sstevel@tonic-gate * for interceptors. They are built into the auditing 407c478bd9Sstevel@tonic-gate * object making the namespace available to "children" 417c478bd9Sstevel@tonic-gate * objects. 427c478bd9Sstevel@tonic-gate */ 437c478bd9Sstevel@tonic-gate 447c478bd9Sstevel@tonic-gate static lwp_mutex_t abi_stdio_mutex = DEFAULTMUTEX; 457c478bd9Sstevel@tonic-gate static volatile thread_t locktid = NOTID; 467c478bd9Sstevel@tonic-gate static volatile int count; 477c478bd9Sstevel@tonic-gate 487c478bd9Sstevel@tonic-gate /* Return true on empty */ 497c478bd9Sstevel@tonic-gate int is_empty_string(char const * s)507c478bd9Sstevel@tonic-gateis_empty_string(char const *s) 517c478bd9Sstevel@tonic-gate { 527c478bd9Sstevel@tonic-gate if (s != NULL && *s != '\0') 537c478bd9Sstevel@tonic-gate return (0); 547c478bd9Sstevel@tonic-gate 557c478bd9Sstevel@tonic-gate return (1); 567c478bd9Sstevel@tonic-gate } 577c478bd9Sstevel@tonic-gate 587c478bd9Sstevel@tonic-gate void abilock(sigset_t * mask)597c478bd9Sstevel@tonic-gateabilock(sigset_t *mask) 607c478bd9Sstevel@tonic-gate { 617c478bd9Sstevel@tonic-gate thread_t tid; 627c478bd9Sstevel@tonic-gate 637c478bd9Sstevel@tonic-gate if ((*abi_thr_main)() != -1) { 647c478bd9Sstevel@tonic-gate tid = (*abi_thr_self)(); 657c478bd9Sstevel@tonic-gate 667c478bd9Sstevel@tonic-gate if (tid == locktid) { 677c478bd9Sstevel@tonic-gate count++; 687c478bd9Sstevel@tonic-gate } else { 697c478bd9Sstevel@tonic-gate (void) _lwp_mutex_lock(&abi_stdio_mutex); 707c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_BLOCK, &abisigset, mask); 717c478bd9Sstevel@tonic-gate locktid = tid; 727c478bd9Sstevel@tonic-gate count = 1; 737c478bd9Sstevel@tonic-gate } 747c478bd9Sstevel@tonic-gate } 757c478bd9Sstevel@tonic-gate } 767c478bd9Sstevel@tonic-gate 777c478bd9Sstevel@tonic-gate void abiunlock(sigset_t * mask)787c478bd9Sstevel@tonic-gateabiunlock(sigset_t *mask) 797c478bd9Sstevel@tonic-gate { 807c478bd9Sstevel@tonic-gate thread_t tid; 817c478bd9Sstevel@tonic-gate 827c478bd9Sstevel@tonic-gate (void) fflush(ABISTREAM); 837c478bd9Sstevel@tonic-gate 847c478bd9Sstevel@tonic-gate if ((*abi_thr_main)() != -1) { 857c478bd9Sstevel@tonic-gate tid = (*abi_thr_self)(); 867c478bd9Sstevel@tonic-gate assert(tid == locktid); 877c478bd9Sstevel@tonic-gate count--; 887c478bd9Sstevel@tonic-gate if (count <= 0) { 897c478bd9Sstevel@tonic-gate count = 0; 907c478bd9Sstevel@tonic-gate locktid = NOTID; 917c478bd9Sstevel@tonic-gate (void) sigprocmask(SIG_SETMASK, mask, NULL); 927c478bd9Sstevel@tonic-gate (void) _lwp_mutex_unlock(&abi_stdio_mutex); 937c478bd9Sstevel@tonic-gate } 947c478bd9Sstevel@tonic-gate } 957c478bd9Sstevel@tonic-gate } 96