/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (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 (c) 1984, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3.4.1 */ #include "mt.h" #include <stdlib.h> #include <errno.h> #include <unistd.h> #include <sys/stropts.h> #include <sys/stream.h> #define _SUN_TPI_VERSION 2 #include <sys/tihdr.h> #include <sys/timod.h> #include <xti.h> #include <signal.h> #include <syslog.h> #include "tx.h" int _tx_unbind(int fd, int api_semantics) { struct _ti_user *tiptr; sigset_t mask; int sv_errno, retval, didalloc; struct strbuf ctlbuf; if ((tiptr = _t_checkfd(fd, 0, api_semantics)) == NULL) return (-1); if (_T_IS_XTI(api_semantics)) { /* * User level state verification only done for XTI * because doing for TLI may break existing applications */ if (tiptr->ti_state != T_IDLE) { t_errno = TOUTSTATE; return (-1); } } /* * Since unbind is not an idempotent operation, we * block signals around the call. * Note that sig_mutex_lock() only defers signals, it does not * block them, so interruptible syscalls could still get EINTR. */ (void) thr_sigsetmask(SIG_SETMASK, &fillset, &mask); sig_mutex_lock(&tiptr->ti_lock); /* * Acquire buffer for use in sending/receiving the message. * Note: assumes (correctly) that ti_ctlsize is large enough * to hold sizeof (struct T_unbind_req/ack) */ if (_t_acquire_ctlbuf(tiptr, &ctlbuf, &didalloc) < 0) { sv_errno = errno; sig_mutex_unlock(&tiptr->ti_lock); (void) thr_sigsetmask(SIG_SETMASK, &mask, NULL); errno = sv_errno; return (-1); } retval = _tx_unbind_locked(fd, tiptr, &ctlbuf); sv_errno = errno; if (didalloc) free(ctlbuf.buf); else tiptr->ti_ctlbuf = ctlbuf.buf; sig_mutex_unlock(&tiptr->ti_lock); (void) thr_sigsetmask(SIG_SETMASK, &mask, NULL); errno = sv_errno; return (retval); } int _tx_unbind_locked(int fd, struct _ti_user *tiptr, struct strbuf *ctlbufp) { struct T_unbind_req *unbind_reqp; int retlen; if (_t_is_event(fd, tiptr) < 0) return (-1); /* LINTED pointer cast */ unbind_reqp = (struct T_unbind_req *)ctlbufp->buf; unbind_reqp->PRIM_type = T_UNBIND_REQ; if (_t_do_ioctl(fd, (char *)unbind_reqp, (int)sizeof (struct T_unbind_req), TI_UNBIND, &retlen) < 0) { goto err_out; } if (ioctl(fd, I_FLUSH, FLUSHRW) < 0) { t_errno = TSYSERR; goto err_out; } /* * clear more and expedited data bits */ tiptr->ti_flags &= ~(MORE|EXPEDITED); _T_TX_NEXTSTATE(T_UNBIND, tiptr, "t_unbind: invalid state event T_UNBIND"); return (0); err_out: return (-1); }