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/inttypes.h> 38*0Sstevel@tonic-gate #include <sys/types.h> 39*0Sstevel@tonic-gate #include <sys/t_lock.h> 40*0Sstevel@tonic-gate #include <sys/param.h> 41*0Sstevel@tonic-gate #include <sys/errno.h> 42*0Sstevel@tonic-gate #include <sys/fstyp.h> 43*0Sstevel@tonic-gate #include <sys/systm.h> 44*0Sstevel@tonic-gate #include <sys/vfs.h> 45*0Sstevel@tonic-gate #include <sys/statfs.h> 46*0Sstevel@tonic-gate #include <sys/vnode.h> 47*0Sstevel@tonic-gate #include <sys/file.h> 48*0Sstevel@tonic-gate #include <sys/cmn_err.h> 49*0Sstevel@tonic-gate #include <sys/debug.h> 50*0Sstevel@tonic-gate #include <sys/pathname.h> 51*0Sstevel@tonic-gate 52*0Sstevel@tonic-gate #include <vm/page.h> 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate #if defined(_SYSCALL32_IMPL) || defined(_ILP32) 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate /* 57*0Sstevel@tonic-gate * statfs(2) and fstatfs(2) have been replaced by statvfs(2) and 58*0Sstevel@tonic-gate * fstatvfs(2) and will be removed from the system in a near-future 59*0Sstevel@tonic-gate * release. 60*0Sstevel@tonic-gate * 61*0Sstevel@tonic-gate * Supported here purely for 32-bit compatibility. 62*0Sstevel@tonic-gate */ 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate static int cstatfs(struct vfs *, struct statfs32 *, int); 65*0Sstevel@tonic-gate 66*0Sstevel@tonic-gate int 67*0Sstevel@tonic-gate statfs32(char *fname, struct statfs32 *sbp, int32_t len, int32_t fstyp) 68*0Sstevel@tonic-gate { 69*0Sstevel@tonic-gate vnode_t *vp; 70*0Sstevel@tonic-gate int error; 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate lookup: 73*0Sstevel@tonic-gate if (error = lookupname(fname, UIO_USERSPACE, FOLLOW, NULLVPP, &vp)) { 74*0Sstevel@tonic-gate if (error == ESTALE) 75*0Sstevel@tonic-gate goto lookup; 76*0Sstevel@tonic-gate return (set_errno(error)); 77*0Sstevel@tonic-gate } 78*0Sstevel@tonic-gate if (fstyp != 0) 79*0Sstevel@tonic-gate error = EINVAL; 80*0Sstevel@tonic-gate else 81*0Sstevel@tonic-gate error = cstatfs(vp->v_vfsp, sbp, len); 82*0Sstevel@tonic-gate VN_RELE(vp); 83*0Sstevel@tonic-gate if (error) { 84*0Sstevel@tonic-gate if (error == ESTALE) 85*0Sstevel@tonic-gate goto lookup; 86*0Sstevel@tonic-gate return (set_errno(error)); 87*0Sstevel@tonic-gate } 88*0Sstevel@tonic-gate return (0); 89*0Sstevel@tonic-gate } 90*0Sstevel@tonic-gate 91*0Sstevel@tonic-gate int 92*0Sstevel@tonic-gate fstatfs32(int32_t fdes, struct statfs32 *sbp, int32_t len, int32_t fstyp) 93*0Sstevel@tonic-gate { 94*0Sstevel@tonic-gate struct file *fp; 95*0Sstevel@tonic-gate int error; 96*0Sstevel@tonic-gate 97*0Sstevel@tonic-gate if (fstyp != 0) 98*0Sstevel@tonic-gate return (set_errno(EINVAL)); 99*0Sstevel@tonic-gate if ((fp = getf(fdes)) == NULL) 100*0Sstevel@tonic-gate return (set_errno(EBADF)); 101*0Sstevel@tonic-gate error = cstatfs(fp->f_vnode->v_vfsp, sbp, len); 102*0Sstevel@tonic-gate releasef(fdes); 103*0Sstevel@tonic-gate if (error) 104*0Sstevel@tonic-gate return (set_errno(error)); 105*0Sstevel@tonic-gate return (0); 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate 108*0Sstevel@tonic-gate /* 109*0Sstevel@tonic-gate * Common routine for fstatfs and statfs. 110*0Sstevel@tonic-gate */ 111*0Sstevel@tonic-gate static int 112*0Sstevel@tonic-gate cstatfs(struct vfs *vfsp, struct statfs32 *sbp, int len) 113*0Sstevel@tonic-gate { 114*0Sstevel@tonic-gate struct statfs32 sfs; 115*0Sstevel@tonic-gate struct statvfs64 svfs; 116*0Sstevel@tonic-gate int error, i; 117*0Sstevel@tonic-gate char *cp, *cp2; 118*0Sstevel@tonic-gate struct vfssw *vswp; 119*0Sstevel@tonic-gate 120*0Sstevel@tonic-gate if (len < 0 || len > sizeof (struct statfs)) 121*0Sstevel@tonic-gate return (EINVAL); 122*0Sstevel@tonic-gate if (error = VFS_STATVFS(vfsp, &svfs)) 123*0Sstevel@tonic-gate return (error); 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate if (svfs.f_blocks > UINT32_MAX || svfs.f_bfree > UINT32_MAX || 126*0Sstevel@tonic-gate svfs.f_files > UINT32_MAX || svfs.f_ffree > UINT32_MAX) 127*0Sstevel@tonic-gate return (EOVERFLOW); 128*0Sstevel@tonic-gate /* 129*0Sstevel@tonic-gate * Map statvfs fields into the old statfs structure. 130*0Sstevel@tonic-gate */ 131*0Sstevel@tonic-gate bzero(&sfs, sizeof (sfs)); 132*0Sstevel@tonic-gate sfs.f_bsize = svfs.f_bsize; 133*0Sstevel@tonic-gate sfs.f_frsize = (svfs.f_frsize == svfs.f_bsize) ? 0 : svfs.f_frsize; 134*0Sstevel@tonic-gate sfs.f_blocks = svfs.f_blocks * (svfs.f_frsize / 512); 135*0Sstevel@tonic-gate sfs.f_bfree = svfs.f_bfree * (svfs.f_frsize / 512); 136*0Sstevel@tonic-gate sfs.f_files = svfs.f_files; 137*0Sstevel@tonic-gate sfs.f_ffree = svfs.f_ffree; 138*0Sstevel@tonic-gate 139*0Sstevel@tonic-gate cp = svfs.f_fstr; 140*0Sstevel@tonic-gate cp2 = sfs.f_fname; 141*0Sstevel@tonic-gate i = 0; 142*0Sstevel@tonic-gate while (i++ < sizeof (sfs.f_fname)) 143*0Sstevel@tonic-gate if (*cp != '\0') 144*0Sstevel@tonic-gate *cp2++ = *cp++; 145*0Sstevel@tonic-gate else 146*0Sstevel@tonic-gate *cp2++ = '\0'; 147*0Sstevel@tonic-gate while (*cp != '\0' && 148*0Sstevel@tonic-gate i++ < (sizeof (svfs.f_fstr) - sizeof (sfs.f_fpack))) 149*0Sstevel@tonic-gate cp++; 150*0Sstevel@tonic-gate (void) strncpy(sfs.f_fpack, cp + 1, sizeof (sfs.f_fpack)); 151*0Sstevel@tonic-gate if ((vswp = vfs_getvfssw(svfs.f_basetype)) == NULL) 152*0Sstevel@tonic-gate sfs.f_fstyp = 0; 153*0Sstevel@tonic-gate else { 154*0Sstevel@tonic-gate sfs.f_fstyp = vswp - vfssw; 155*0Sstevel@tonic-gate vfs_unrefvfssw(vswp); 156*0Sstevel@tonic-gate } 157*0Sstevel@tonic-gate 158*0Sstevel@tonic-gate if (copyout(&sfs, sbp, len)) 159*0Sstevel@tonic-gate return (EFAULT); 160*0Sstevel@tonic-gate 161*0Sstevel@tonic-gate return (0); 162*0Sstevel@tonic-gate } 163*0Sstevel@tonic-gate 164*0Sstevel@tonic-gate #endif /* _SYSCALL32_IMPL || _ILP32 */ 165