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 2003 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/pathname.h> 45*0Sstevel@tonic-gate #include <sys/vnode.h> 46*0Sstevel@tonic-gate #include <sys/vfs.h> 47*0Sstevel@tonic-gate #include <sys/file.h> 48*0Sstevel@tonic-gate #include <sys/uio.h> 49*0Sstevel@tonic-gate #include <sys/debug.h> 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate /* 52*0Sstevel@tonic-gate * Common code for pathconf(), fpathconf() system calls 53*0Sstevel@tonic-gate */ 54*0Sstevel@tonic-gate static long 55*0Sstevel@tonic-gate cpathconf(register vnode_t *vp, int cmd, struct cred *cr) 56*0Sstevel@tonic-gate { 57*0Sstevel@tonic-gate int error; 58*0Sstevel@tonic-gate ulong_t val; 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate switch (cmd) { 61*0Sstevel@tonic-gate case _PC_2_SYMLINKS: 62*0Sstevel@tonic-gate if (error = VOP_PATHCONF(vp, _PC_SYMLINK_MAX, &val, cr)) 63*0Sstevel@tonic-gate return ((long)set_errno(error)); 64*0Sstevel@tonic-gate return ((long)(val > 0)); 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate case _PC_ALLOC_SIZE_MIN: 67*0Sstevel@tonic-gate case _PC_REC_INCR_XFER_SIZE: 68*0Sstevel@tonic-gate case _PC_REC_MAX_XFER_SIZE: 69*0Sstevel@tonic-gate case _PC_REC_MIN_XFER_SIZE: 70*0Sstevel@tonic-gate case _PC_REC_XFER_ALIGN: 71*0Sstevel@tonic-gate return ((long)set_errno(EINVAL)); 72*0Sstevel@tonic-gate 73*0Sstevel@tonic-gate case _PC_ASYNC_IO: 74*0Sstevel@tonic-gate return (1l); 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate case _PC_PRIO_IO: 77*0Sstevel@tonic-gate return ((long)set_errno(EINVAL)); 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate case _PC_SYNC_IO: 80*0Sstevel@tonic-gate if (!(error = VOP_FSYNC(vp, FSYNC, cr))) 81*0Sstevel@tonic-gate return (1l); 82*0Sstevel@tonic-gate return ((long)set_errno(error)); 83*0Sstevel@tonic-gate 84*0Sstevel@tonic-gate case _PC_XATTR_ENABLED: 85*0Sstevel@tonic-gate return ((vp->v_vfsp->vfs_flag & VFS_XATTR) ? 1 : 0); 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate default: 88*0Sstevel@tonic-gate if (error = VOP_PATHCONF(vp, cmd, &val, cr)) 89*0Sstevel@tonic-gate return ((long)set_errno(error)); 90*0Sstevel@tonic-gate return (val); 91*0Sstevel@tonic-gate } 92*0Sstevel@tonic-gate /* NOTREACHED */ 93*0Sstevel@tonic-gate } 94*0Sstevel@tonic-gate 95*0Sstevel@tonic-gate /* fpathconf/pathconf interfaces */ 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate long 98*0Sstevel@tonic-gate fpathconf(int fdes, int name) 99*0Sstevel@tonic-gate { 100*0Sstevel@tonic-gate file_t *fp; 101*0Sstevel@tonic-gate long retval; 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate if ((fp = getf(fdes)) == NULL) 104*0Sstevel@tonic-gate return (set_errno(EBADF)); 105*0Sstevel@tonic-gate retval = cpathconf(fp->f_vnode, name, fp->f_cred); 106*0Sstevel@tonic-gate releasef(fdes); 107*0Sstevel@tonic-gate return (retval); 108*0Sstevel@tonic-gate } 109*0Sstevel@tonic-gate 110*0Sstevel@tonic-gate long 111*0Sstevel@tonic-gate pathconf(char *fname, int name) 112*0Sstevel@tonic-gate { 113*0Sstevel@tonic-gate vnode_t *vp; 114*0Sstevel@tonic-gate long retval; 115*0Sstevel@tonic-gate int error; 116*0Sstevel@tonic-gate 117*0Sstevel@tonic-gate lookup: 118*0Sstevel@tonic-gate if (error = lookupname(fname, UIO_USERSPACE, FOLLOW, NULLVPP, &vp)) { 119*0Sstevel@tonic-gate if (error == ESTALE) 120*0Sstevel@tonic-gate goto lookup; 121*0Sstevel@tonic-gate return ((long)set_errno(error)); 122*0Sstevel@tonic-gate } 123*0Sstevel@tonic-gate 124*0Sstevel@tonic-gate retval = cpathconf(vp, name, CRED()); 125*0Sstevel@tonic-gate VN_RELE(vp); 126*0Sstevel@tonic-gate return (retval); 127*0Sstevel@tonic-gate } 128