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 1993 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/types.h> 38*0Sstevel@tonic-gate #include <sys/t_lock.h> 39*0Sstevel@tonic-gate #include <sys/param.h> 40*0Sstevel@tonic-gate #include <sys/errno.h> 41*0Sstevel@tonic-gate #include <sys/fstyp.h> 42*0Sstevel@tonic-gate #include <sys/systm.h> 43*0Sstevel@tonic-gate #include <sys/mount.h> 44*0Sstevel@tonic-gate #include <sys/vfs.h> 45*0Sstevel@tonic-gate #include <sys/vnode.h> 46*0Sstevel@tonic-gate #include <sys/cmn_err.h> 47*0Sstevel@tonic-gate #include <sys/buf.h> 48*0Sstevel@tonic-gate #include <sys/debug.h> 49*0Sstevel@tonic-gate #include <sys/pathname.h> 50*0Sstevel@tonic-gate 51*0Sstevel@tonic-gate /* 52*0Sstevel@tonic-gate * System call to map fstype numbers to names, and vice versa. 53*0Sstevel@tonic-gate */ 54*0Sstevel@tonic-gate 55*0Sstevel@tonic-gate static int sysfsind(char *); 56*0Sstevel@tonic-gate static int sysfstyp(int, char *); 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate int 59*0Sstevel@tonic-gate sysfs(int opcode, long a1, long a2) 60*0Sstevel@tonic-gate { 61*0Sstevel@tonic-gate int error; 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate switch (opcode) { 64*0Sstevel@tonic-gate case GETFSIND: 65*0Sstevel@tonic-gate error = sysfsind((char *)a1); 66*0Sstevel@tonic-gate break; 67*0Sstevel@tonic-gate case GETFSTYP: 68*0Sstevel@tonic-gate error = sysfstyp((int)a1, (char *)a2); 69*0Sstevel@tonic-gate break; 70*0Sstevel@tonic-gate case GETNFSTYP: 71*0Sstevel@tonic-gate /* 72*0Sstevel@tonic-gate * Return number of fstypes configured in the system. 73*0Sstevel@tonic-gate */ 74*0Sstevel@tonic-gate return (nfstype - 1); 75*0Sstevel@tonic-gate default: 76*0Sstevel@tonic-gate error = set_errno(EINVAL); 77*0Sstevel@tonic-gate } 78*0Sstevel@tonic-gate 79*0Sstevel@tonic-gate return (error); 80*0Sstevel@tonic-gate } 81*0Sstevel@tonic-gate 82*0Sstevel@tonic-gate static int 83*0Sstevel@tonic-gate sysfsind(char *fsname) 84*0Sstevel@tonic-gate { 85*0Sstevel@tonic-gate /* 86*0Sstevel@tonic-gate * Translate fs identifier to an index into the vfssw structure. 87*0Sstevel@tonic-gate */ 88*0Sstevel@tonic-gate struct vfssw *vswp; 89*0Sstevel@tonic-gate char fsbuf[FSTYPSZ]; 90*0Sstevel@tonic-gate int retval; 91*0Sstevel@tonic-gate size_t len = 0; 92*0Sstevel@tonic-gate 93*0Sstevel@tonic-gate retval = copyinstr(fsname, fsbuf, FSTYPSZ, &len); 94*0Sstevel@tonic-gate if (retval == ENOENT) /* XXX */ 95*0Sstevel@tonic-gate retval = EINVAL; /* XXX */ 96*0Sstevel@tonic-gate if (len == 1) /* Includes null byte */ 97*0Sstevel@tonic-gate retval = EINVAL; 98*0Sstevel@tonic-gate if (retval) 99*0Sstevel@tonic-gate return (set_errno(retval)); 100*0Sstevel@tonic-gate /* 101*0Sstevel@tonic-gate * Search the vfssw table for the fs identifier 102*0Sstevel@tonic-gate * and return the index. 103*0Sstevel@tonic-gate */ 104*0Sstevel@tonic-gate if ((vswp = vfs_getvfssw(fsbuf)) != NULL) { 105*0Sstevel@tonic-gate retval = vswp - vfssw; 106*0Sstevel@tonic-gate vfs_unrefvfssw(vswp); 107*0Sstevel@tonic-gate return (retval); 108*0Sstevel@tonic-gate } 109*0Sstevel@tonic-gate 110*0Sstevel@tonic-gate return (set_errno(EINVAL)); 111*0Sstevel@tonic-gate } 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate static int 114*0Sstevel@tonic-gate sysfstyp(int index, char *cbuf) 115*0Sstevel@tonic-gate { 116*0Sstevel@tonic-gate /* 117*0Sstevel@tonic-gate * Translate fstype index into an fs identifier. 118*0Sstevel@tonic-gate */ 119*0Sstevel@tonic-gate char *src; 120*0Sstevel@tonic-gate struct vfssw *vswp; 121*0Sstevel@tonic-gate char *osrc; 122*0Sstevel@tonic-gate int error = 0; 123*0Sstevel@tonic-gate 124*0Sstevel@tonic-gate if (index <= 0 || index >= nfstype) 125*0Sstevel@tonic-gate return (set_errno(EINVAL)); 126*0Sstevel@tonic-gate RLOCK_VFSSW(); 127*0Sstevel@tonic-gate vswp = &vfssw[index]; 128*0Sstevel@tonic-gate 129*0Sstevel@tonic-gate osrc = src = vswp->vsw_name; 130*0Sstevel@tonic-gate while (*src++) 131*0Sstevel@tonic-gate ; 132*0Sstevel@tonic-gate 133*0Sstevel@tonic-gate if (copyout(osrc, cbuf, src - osrc)) 134*0Sstevel@tonic-gate error = set_errno(EFAULT); 135*0Sstevel@tonic-gate RUNLOCK_VFSSW(); 136*0Sstevel@tonic-gate return (error); 137*0Sstevel@tonic-gate } 138