17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5dd29fa4aSprabahar * Common Development and Distribution License (the "License"). 6dd29fa4aSprabahar * You may not use this file except in compliance with the License. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 117c478bd9Sstevel@tonic-gate * and limitations under the License. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 187c478bd9Sstevel@tonic-gate * 197c478bd9Sstevel@tonic-gate * CDDL HEADER END 207c478bd9Sstevel@tonic-gate */ 217c478bd9Sstevel@tonic-gate /* 22*da6c28aaSamw * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 237c478bd9Sstevel@tonic-gate * Use is subject to license terms. 247c478bd9Sstevel@tonic-gate */ 257c478bd9Sstevel@tonic-gate 267c478bd9Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 277c478bd9Sstevel@tonic-gate /* All Rights Reserved */ 287c478bd9Sstevel@tonic-gate 297c478bd9Sstevel@tonic-gate /* 307c478bd9Sstevel@tonic-gate * Portions of this source code were derived from Berkeley 4.3 BSD 317c478bd9Sstevel@tonic-gate * under license from the Regents of the University of California. 327c478bd9Sstevel@tonic-gate */ 337c478bd9Sstevel@tonic-gate 347c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 357c478bd9Sstevel@tonic-gate 367c478bd9Sstevel@tonic-gate #include <sys/param.h> 377c478bd9Sstevel@tonic-gate #include <sys/isa_defs.h> 387c478bd9Sstevel@tonic-gate #include <sys/types.h> 397c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h> 407c478bd9Sstevel@tonic-gate #include <sys/cred.h> 417c478bd9Sstevel@tonic-gate #include <sys/systm.h> 427c478bd9Sstevel@tonic-gate #include <sys/errno.h> 437c478bd9Sstevel@tonic-gate #include <sys/pathname.h> 447c478bd9Sstevel@tonic-gate #include <sys/vnode.h> 457c478bd9Sstevel@tonic-gate #include <sys/vfs.h> 467c478bd9Sstevel@tonic-gate #include <sys/file.h> 477c478bd9Sstevel@tonic-gate #include <sys/uio.h> 487c478bd9Sstevel@tonic-gate #include <sys/debug.h> 49dd29fa4aSprabahar #include <fs/fs_subr.h> 507c478bd9Sstevel@tonic-gate 517c478bd9Sstevel@tonic-gate /* 527c478bd9Sstevel@tonic-gate * Common code for pathconf(), fpathconf() system calls 537c478bd9Sstevel@tonic-gate */ 547c478bd9Sstevel@tonic-gate static long 557c478bd9Sstevel@tonic-gate cpathconf(register vnode_t *vp, int cmd, struct cred *cr) 567c478bd9Sstevel@tonic-gate { 577c478bd9Sstevel@tonic-gate int error; 587c478bd9Sstevel@tonic-gate ulong_t val; 597c478bd9Sstevel@tonic-gate 607c478bd9Sstevel@tonic-gate switch (cmd) { 617c478bd9Sstevel@tonic-gate case _PC_2_SYMLINKS: 62*da6c28aaSamw if (error = VOP_PATHCONF(vp, _PC_SYMLINK_MAX, &val, cr, NULL)) 637c478bd9Sstevel@tonic-gate return ((long)set_errno(error)); 647c478bd9Sstevel@tonic-gate return ((long)(val > 0)); 657c478bd9Sstevel@tonic-gate 667c478bd9Sstevel@tonic-gate case _PC_ALLOC_SIZE_MIN: 677c478bd9Sstevel@tonic-gate case _PC_REC_INCR_XFER_SIZE: 687c478bd9Sstevel@tonic-gate case _PC_REC_MAX_XFER_SIZE: 697c478bd9Sstevel@tonic-gate case _PC_REC_MIN_XFER_SIZE: 707c478bd9Sstevel@tonic-gate case _PC_REC_XFER_ALIGN: 717c478bd9Sstevel@tonic-gate return ((long)set_errno(EINVAL)); 727c478bd9Sstevel@tonic-gate 737c478bd9Sstevel@tonic-gate case _PC_ASYNC_IO: 747c478bd9Sstevel@tonic-gate return (1l); 757c478bd9Sstevel@tonic-gate 767c478bd9Sstevel@tonic-gate case _PC_PRIO_IO: 777c478bd9Sstevel@tonic-gate return ((long)set_errno(EINVAL)); 787c478bd9Sstevel@tonic-gate 797c478bd9Sstevel@tonic-gate case _PC_SYNC_IO: 80*da6c28aaSamw if (!(error = VOP_FSYNC(vp, FSYNC, cr, NULL))) 817c478bd9Sstevel@tonic-gate return (1l); 827c478bd9Sstevel@tonic-gate return ((long)set_errno(error)); 837c478bd9Sstevel@tonic-gate 847c478bd9Sstevel@tonic-gate case _PC_XATTR_ENABLED: 857c478bd9Sstevel@tonic-gate return ((vp->v_vfsp->vfs_flag & VFS_XATTR) ? 1 : 0); 867c478bd9Sstevel@tonic-gate 877c478bd9Sstevel@tonic-gate default: 88*da6c28aaSamw if (error = VOP_PATHCONF(vp, cmd, &val, cr, NULL)) 897c478bd9Sstevel@tonic-gate return ((long)set_errno(error)); 907c478bd9Sstevel@tonic-gate return (val); 917c478bd9Sstevel@tonic-gate } 927c478bd9Sstevel@tonic-gate /* NOTREACHED */ 937c478bd9Sstevel@tonic-gate } 947c478bd9Sstevel@tonic-gate 957c478bd9Sstevel@tonic-gate /* fpathconf/pathconf interfaces */ 967c478bd9Sstevel@tonic-gate 977c478bd9Sstevel@tonic-gate long 987c478bd9Sstevel@tonic-gate fpathconf(int fdes, int name) 997c478bd9Sstevel@tonic-gate { 1007c478bd9Sstevel@tonic-gate file_t *fp; 1017c478bd9Sstevel@tonic-gate long retval; 1027c478bd9Sstevel@tonic-gate 1037c478bd9Sstevel@tonic-gate if ((fp = getf(fdes)) == NULL) 1047c478bd9Sstevel@tonic-gate return (set_errno(EBADF)); 1057c478bd9Sstevel@tonic-gate retval = cpathconf(fp->f_vnode, name, fp->f_cred); 1067c478bd9Sstevel@tonic-gate releasef(fdes); 1077c478bd9Sstevel@tonic-gate return (retval); 1087c478bd9Sstevel@tonic-gate } 1097c478bd9Sstevel@tonic-gate 1107c478bd9Sstevel@tonic-gate long 1117c478bd9Sstevel@tonic-gate pathconf(char *fname, int name) 1127c478bd9Sstevel@tonic-gate { 1137c478bd9Sstevel@tonic-gate vnode_t *vp; 1147c478bd9Sstevel@tonic-gate long retval; 1157c478bd9Sstevel@tonic-gate int error; 116dd29fa4aSprabahar int estale_retry = 0; 1177c478bd9Sstevel@tonic-gate 1187c478bd9Sstevel@tonic-gate lookup: 1197c478bd9Sstevel@tonic-gate if (error = lookupname(fname, UIO_USERSPACE, FOLLOW, NULLVPP, &vp)) { 120dd29fa4aSprabahar if ((error == ESTALE) && fs_need_estale_retry(estale_retry++)) 1217c478bd9Sstevel@tonic-gate goto lookup; 1227c478bd9Sstevel@tonic-gate return ((long)set_errno(error)); 1237c478bd9Sstevel@tonic-gate } 1247c478bd9Sstevel@tonic-gate 1257c478bd9Sstevel@tonic-gate retval = cpathconf(vp, name, CRED()); 1267c478bd9Sstevel@tonic-gate VN_RELE(vp); 1277c478bd9Sstevel@tonic-gate return (retval); 1287c478bd9Sstevel@tonic-gate } 129