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 /* 23*0Sstevel@tonic-gate * Copyright 2001 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * Portions of this source code were derived from Berkeley 4.3 BSD 32*0Sstevel@tonic-gate * under license from the Regents of the University of California. 33*0Sstevel@tonic-gate */ 34*0Sstevel@tonic-gate 35*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 36*0Sstevel@tonic-gate 37*0Sstevel@tonic-gate #include <sys/param.h> 38*0Sstevel@tonic-gate #include <sys/isa_defs.h> 39*0Sstevel@tonic-gate #include <sys/types.h> 40*0Sstevel@tonic-gate #include <sys/sysmacros.h> 41*0Sstevel@tonic-gate #include <sys/cred.h> 42*0Sstevel@tonic-gate #include <sys/systm.h> 43*0Sstevel@tonic-gate #include <sys/errno.h> 44*0Sstevel@tonic-gate #include <sys/ttold.h> 45*0Sstevel@tonic-gate #include <sys/vnode.h> 46*0Sstevel@tonic-gate #include <sys/file.h> 47*0Sstevel@tonic-gate #include <sys/mode.h> 48*0Sstevel@tonic-gate #include <sys/proc.h> 49*0Sstevel@tonic-gate #include <sys/uio.h> 50*0Sstevel@tonic-gate #include <sys/kmem.h> 51*0Sstevel@tonic-gate #include <sys/filio.h> 52*0Sstevel@tonic-gate #include <sys/sunddi.h> 53*0Sstevel@tonic-gate #include <sys/debug.h> 54*0Sstevel@tonic-gate #include <sys/int_limits.h> 55*0Sstevel@tonic-gate #include <sys/model.h> 56*0Sstevel@tonic-gate 57*0Sstevel@tonic-gate /* 58*0Sstevel@tonic-gate * I/O control. 59*0Sstevel@tonic-gate */ 60*0Sstevel@tonic-gate 61*0Sstevel@tonic-gate int 62*0Sstevel@tonic-gate ioctl(int fdes, int cmd, intptr_t arg) 63*0Sstevel@tonic-gate { 64*0Sstevel@tonic-gate file_t *fp; 65*0Sstevel@tonic-gate int error = 0; 66*0Sstevel@tonic-gate vnode_t *vp; 67*0Sstevel@tonic-gate struct vattr vattr; 68*0Sstevel@tonic-gate int32_t flag; 69*0Sstevel@tonic-gate int rv = 0; 70*0Sstevel@tonic-gate 71*0Sstevel@tonic-gate if ((fp = getf(fdes)) == NULL) 72*0Sstevel@tonic-gate return (set_errno(EBADF)); 73*0Sstevel@tonic-gate vp = fp->f_vnode; 74*0Sstevel@tonic-gate 75*0Sstevel@tonic-gate if (vp->v_type == VREG || vp->v_type == VDIR) { 76*0Sstevel@tonic-gate /* 77*0Sstevel@tonic-gate * Handle these two ioctls for regular files and 78*0Sstevel@tonic-gate * directories. All others will usually be failed 79*0Sstevel@tonic-gate * with ENOTTY by the VFS-dependent code. System V 80*0Sstevel@tonic-gate * always failed all ioctls on regular files, but SunOS 81*0Sstevel@tonic-gate * supported these. 82*0Sstevel@tonic-gate */ 83*0Sstevel@tonic-gate switch (cmd) { 84*0Sstevel@tonic-gate case FIONREAD: { 85*0Sstevel@tonic-gate /* 86*0Sstevel@tonic-gate * offset is int32_t because that is what FIONREAD 87*0Sstevel@tonic-gate * is defined in terms of. We cap at INT_MAX as in 88*0Sstevel@tonic-gate * other cases for this ioctl. 89*0Sstevel@tonic-gate */ 90*0Sstevel@tonic-gate int32_t offset; 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate vattr.va_mask = AT_SIZE; 93*0Sstevel@tonic-gate error = VOP_GETATTR(vp, &vattr, 0, fp->f_cred); 94*0Sstevel@tonic-gate if (error) { 95*0Sstevel@tonic-gate releasef(fdes); 96*0Sstevel@tonic-gate return (set_errno(error)); 97*0Sstevel@tonic-gate } 98*0Sstevel@tonic-gate offset = MIN(vattr.va_size - fp->f_offset, INT_MAX); 99*0Sstevel@tonic-gate if (copyout(&offset, (caddr_t)arg, sizeof (offset))) { 100*0Sstevel@tonic-gate releasef(fdes); 101*0Sstevel@tonic-gate return (set_errno(EFAULT)); 102*0Sstevel@tonic-gate } 103*0Sstevel@tonic-gate releasef(fdes); 104*0Sstevel@tonic-gate return (0); 105*0Sstevel@tonic-gate } 106*0Sstevel@tonic-gate 107*0Sstevel@tonic-gate case FIONBIO: 108*0Sstevel@tonic-gate if (copyin((caddr_t)arg, &flag, sizeof (flag))) { 109*0Sstevel@tonic-gate releasef(fdes); 110*0Sstevel@tonic-gate return (set_errno(EFAULT)); 111*0Sstevel@tonic-gate } 112*0Sstevel@tonic-gate mutex_enter(&fp->f_tlock); 113*0Sstevel@tonic-gate if (flag) 114*0Sstevel@tonic-gate fp->f_flag |= FNDELAY; 115*0Sstevel@tonic-gate else 116*0Sstevel@tonic-gate fp->f_flag &= ~FNDELAY; 117*0Sstevel@tonic-gate mutex_exit(&fp->f_tlock); 118*0Sstevel@tonic-gate releasef(fdes); 119*0Sstevel@tonic-gate return (0); 120*0Sstevel@tonic-gate 121*0Sstevel@tonic-gate default: 122*0Sstevel@tonic-gate break; 123*0Sstevel@tonic-gate } 124*0Sstevel@tonic-gate } 125*0Sstevel@tonic-gate 126*0Sstevel@tonic-gate /* 127*0Sstevel@tonic-gate * ioctl() now passes in the model information in some high bits. 128*0Sstevel@tonic-gate */ 129*0Sstevel@tonic-gate flag = fp->f_flag | get_udatamodel(); 130*0Sstevel@tonic-gate error = VOP_IOCTL(fp->f_vnode, cmd, arg, flag, CRED(), &rv); 131*0Sstevel@tonic-gate if (error != 0) { 132*0Sstevel@tonic-gate releasef(fdes); 133*0Sstevel@tonic-gate return (set_errno(error)); 134*0Sstevel@tonic-gate } 135*0Sstevel@tonic-gate switch (cmd) { 136*0Sstevel@tonic-gate case FIONBIO: 137*0Sstevel@tonic-gate if (copyin((caddr_t)arg, &flag, sizeof (flag))) { 138*0Sstevel@tonic-gate releasef(fdes); 139*0Sstevel@tonic-gate return (set_errno(EFAULT)); 140*0Sstevel@tonic-gate } 141*0Sstevel@tonic-gate mutex_enter(&fp->f_tlock); 142*0Sstevel@tonic-gate if (flag) 143*0Sstevel@tonic-gate fp->f_flag |= FNDELAY; 144*0Sstevel@tonic-gate else 145*0Sstevel@tonic-gate fp->f_flag &= ~FNDELAY; 146*0Sstevel@tonic-gate mutex_exit(&fp->f_tlock); 147*0Sstevel@tonic-gate break; 148*0Sstevel@tonic-gate 149*0Sstevel@tonic-gate default: 150*0Sstevel@tonic-gate break; 151*0Sstevel@tonic-gate } 152*0Sstevel@tonic-gate releasef(fdes); 153*0Sstevel@tonic-gate return (rv); 154*0Sstevel@tonic-gate } 155*0Sstevel@tonic-gate 156*0Sstevel@tonic-gate /* 157*0Sstevel@tonic-gate * Old stty and gtty. (Still.) 158*0Sstevel@tonic-gate */ 159*0Sstevel@tonic-gate int 160*0Sstevel@tonic-gate stty(int fdes, intptr_t arg) 161*0Sstevel@tonic-gate { 162*0Sstevel@tonic-gate return (ioctl(fdes, TIOCSETP, arg)); 163*0Sstevel@tonic-gate } 164*0Sstevel@tonic-gate 165*0Sstevel@tonic-gate int 166*0Sstevel@tonic-gate gtty(int fdes, intptr_t arg) 167*0Sstevel@tonic-gate { 168*0Sstevel@tonic-gate return (ioctl(fdes, TIOCGETP, arg)); 169*0Sstevel@tonic-gate } 170