1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 23*0Sstevel@tonic-gate /* All Rights Reserved */ 24*0Sstevel@tonic-gate 25*0Sstevel@tonic-gate 26*0Sstevel@tonic-gate /* 27*0Sstevel@tonic-gate * Copyright 1993-2003 Sun Microsystems, Inc. All rights reserved. 28*0Sstevel@tonic-gate * Use is subject to license terms. 29*0Sstevel@tonic-gate */ 30*0Sstevel@tonic-gate 31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3.4.1 */ 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include "mt.h" 34*0Sstevel@tonic-gate #include <rpc/trace.h> 35*0Sstevel@tonic-gate #include <stdlib.h> 36*0Sstevel@tonic-gate #include <errno.h> 37*0Sstevel@tonic-gate #include <unistd.h> 38*0Sstevel@tonic-gate #include <sys/stropts.h> 39*0Sstevel@tonic-gate #include <sys/stream.h> 40*0Sstevel@tonic-gate #define _SUN_TPI_VERSION 2 41*0Sstevel@tonic-gate #include <sys/tihdr.h> 42*0Sstevel@tonic-gate #include <sys/timod.h> 43*0Sstevel@tonic-gate #include <xti.h> 44*0Sstevel@tonic-gate #include <signal.h> 45*0Sstevel@tonic-gate #include <syslog.h> 46*0Sstevel@tonic-gate #include "tx.h" 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate 49*0Sstevel@tonic-gate int 50*0Sstevel@tonic-gate _tx_unbind(int fd, int api_semantics) 51*0Sstevel@tonic-gate { 52*0Sstevel@tonic-gate struct _ti_user *tiptr; 53*0Sstevel@tonic-gate sigset_t mask; 54*0Sstevel@tonic-gate int sv_errno, retval, didalloc; 55*0Sstevel@tonic-gate struct strbuf ctlbuf; 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate trace2(TR_t_unbind, 0, fd); 58*0Sstevel@tonic-gate if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL) { 59*0Sstevel@tonic-gate sv_errno = errno; 60*0Sstevel@tonic-gate trace2(TR_t_unbind, 1, fd); 61*0Sstevel@tonic-gate errno = sv_errno; 62*0Sstevel@tonic-gate return (-1); 63*0Sstevel@tonic-gate } 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate if (_T_IS_XTI(api_semantics)) { 66*0Sstevel@tonic-gate /* 67*0Sstevel@tonic-gate * User level state verification only done for XTI 68*0Sstevel@tonic-gate * because doing for TLI may break existing applications 69*0Sstevel@tonic-gate */ 70*0Sstevel@tonic-gate if (tiptr->ti_state != T_IDLE) { 71*0Sstevel@tonic-gate t_errno = TOUTSTATE; 72*0Sstevel@tonic-gate trace2(TR_t_unbind, 1, fd); 73*0Sstevel@tonic-gate return (-1); 74*0Sstevel@tonic-gate } 75*0Sstevel@tonic-gate } 76*0Sstevel@tonic-gate 77*0Sstevel@tonic-gate /* 78*0Sstevel@tonic-gate * Since unbind is not an idempotent operation, we 79*0Sstevel@tonic-gate * block signals around the call. 80*0Sstevel@tonic-gate * Note that sig_mutex_lock() only defers signals, it does not 81*0Sstevel@tonic-gate * block them, so interruptible syscalls could still get EINTR. 82*0Sstevel@tonic-gate */ 83*0Sstevel@tonic-gate (void) thr_sigsetmask(SIG_SETMASK, &fillset, &mask); 84*0Sstevel@tonic-gate sig_mutex_lock(&tiptr->ti_lock); 85*0Sstevel@tonic-gate /* 86*0Sstevel@tonic-gate * Acquire buffer for use in sending/receiving the message. 87*0Sstevel@tonic-gate * Note: assumes (correctly) that ti_ctlsize is large enough 88*0Sstevel@tonic-gate * to hold sizeof (struct T_unbind_req/ack) 89*0Sstevel@tonic-gate */ 90*0Sstevel@tonic-gate if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) { 91*0Sstevel@tonic-gate sv_errno = errno; 92*0Sstevel@tonic-gate sig_mutex_unlock(&tiptr->ti_lock); 93*0Sstevel@tonic-gate (void) thr_sigsetmask(SIG_SETMASK, &mask, NULL); 94*0Sstevel@tonic-gate trace2(TR_t_bind, 1, fd); 95*0Sstevel@tonic-gate errno = sv_errno; 96*0Sstevel@tonic-gate return (-1); 97*0Sstevel@tonic-gate } 98*0Sstevel@tonic-gate 99*0Sstevel@tonic-gate retval = _tx_unbind_locked(fd, tiptr, &ctlbuf); 100*0Sstevel@tonic-gate 101*0Sstevel@tonic-gate sv_errno = errno; 102*0Sstevel@tonic-gate if (didalloc) 103*0Sstevel@tonic-gate free(ctlbuf.buf); 104*0Sstevel@tonic-gate else 105*0Sstevel@tonic-gate tiptr->ti_ctlbuf = ctlbuf.buf; 106*0Sstevel@tonic-gate sig_mutex_unlock(&tiptr->ti_lock); 107*0Sstevel@tonic-gate (void) thr_sigsetmask(SIG_SETMASK, &mask, NULL); 108*0Sstevel@tonic-gate trace2(TR_t_unbind, 1, fd); 109*0Sstevel@tonic-gate errno = sv_errno; 110*0Sstevel@tonic-gate return (retval); 111*0Sstevel@tonic-gate } 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate int 114*0Sstevel@tonic-gate _tx_unbind_locked(int fd, struct _ti_user *tiptr, struct strbuf *ctlbufp) 115*0Sstevel@tonic-gate { 116*0Sstevel@tonic-gate struct T_unbind_req *unbind_reqp; 117*0Sstevel@tonic-gate int sv_errno, retlen; 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate trace2(TR_t_unbind_locked, 0, fd); 120*0Sstevel@tonic-gate if (_t_is_event(fd, tiptr) < 0) { 121*0Sstevel@tonic-gate sv_errno = errno; 122*0Sstevel@tonic-gate trace2(TR_t_unbind, 1, fd); 123*0Sstevel@tonic-gate errno = sv_errno; 124*0Sstevel@tonic-gate return (-1); 125*0Sstevel@tonic-gate } 126*0Sstevel@tonic-gate 127*0Sstevel@tonic-gate unbind_reqp = (struct T_unbind_req *)ctlbufp->buf; 128*0Sstevel@tonic-gate unbind_reqp->PRIM_type = T_UNBIND_REQ; 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate if (_t_do_ioctl(fd, (char *)unbind_reqp, 131*0Sstevel@tonic-gate (int)sizeof (struct T_unbind_req), TI_UNBIND, &retlen) < 0) { 132*0Sstevel@tonic-gate goto err_out; 133*0Sstevel@tonic-gate } 134*0Sstevel@tonic-gate 135*0Sstevel@tonic-gate if (_ioctl(fd, I_FLUSH, FLUSHRW) < 0) { 136*0Sstevel@tonic-gate t_errno = TSYSERR; 137*0Sstevel@tonic-gate goto err_out; 138*0Sstevel@tonic-gate } 139*0Sstevel@tonic-gate 140*0Sstevel@tonic-gate /* 141*0Sstevel@tonic-gate * clear more and expedited data bits 142*0Sstevel@tonic-gate */ 143*0Sstevel@tonic-gate tiptr->ti_flags &= ~(MORE|EXPEDITED); 144*0Sstevel@tonic-gate 145*0Sstevel@tonic-gate _T_TX_NEXTSTATE(T_UNBIND, tiptr, 146*0Sstevel@tonic-gate "t_unbind: invalid state event T_UNBIND"); 147*0Sstevel@tonic-gate 148*0Sstevel@tonic-gate trace2(TR_t_unbind_locked, 1, fd); 149*0Sstevel@tonic-gate return (0); 150*0Sstevel@tonic-gate 151*0Sstevel@tonic-gate err_out: 152*0Sstevel@tonic-gate sv_errno = errno; 153*0Sstevel@tonic-gate trace2(TR_t_unbind_locked, 1, fd); 154*0Sstevel@tonic-gate errno = sv_errno; 155*0Sstevel@tonic-gate return (-1); 156*0Sstevel@tonic-gate } 157