1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23 /* All Rights Reserved */ 24 25 26 /* 27 * Copyright 1994-2003 Sun Microsystems, Inc. All rights reserved. 28 * Use is subject to license terms. 29 */ 30 31 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/sysmacros.h> 34 #include <sys/systm.h> 35 #include <sys/errno.h> 36 #include <sys/proc.h> 37 #include <sys/fault.h> 38 #include <sys/procset.h> 39 #include <sys/signal.h> 40 #include <sys/schedctl.h> 41 #include <sys/debug.h> 42 43 int 44 sigsuspend(sigset_t *setp) 45 { 46 sigset_t set; 47 k_sigset_t kset; 48 proc_t *p = curproc; 49 50 if (copyin((caddr_t)setp, (caddr_t)&set, sizeof (sigset_t))) 51 return (set_errno(EFAULT)); 52 sigutok(&set, &kset); 53 mutex_enter(&p->p_lock); 54 schedctl_finish_sigblock(curthread); 55 ttolwp(curthread)->lwp_sigoldmask = curthread->t_hold; 56 curthread->t_hold = kset; 57 curthread->t_sig_check = 1; /* so post-syscall will re-evaluate */ 58 curthread->t_flag |= T_TOMASK; 59 /* pause() */ 60 while (cv_wait_sig_swap(&curthread->t_delay_cv, &p->p_lock)) 61 ; 62 mutex_exit(&p->p_lock); 63 return (set_errno(EINTR)); 64 } 65