1/*- 2 * Copyright (c) 2009 Stanislav Sedov <stas@FreeBSD.org> 3 * Copyright (c) 1988, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD$"); 37 38#include <sys/param.h> 39#include <sys/user.h> 40#include <sys/stat.h> 41#include <sys/vnode.h> 42#include <sys/conf.h> 43#define _KERNEL 44#include <sys/pipe.h> 45#include <sys/mount.h> 46#include <ufs/ufs/quota.h> 47#include <ufs/ufs/inode.h> 48#include <fs/devfs/devfs.h> 49#include <fs/devfs/devfs_int.h> 50#undef _KERNEL 51#include <nfs/nfsproto.h> 52#include <nfsclient/nfs.h> 53#include <nfsclient/nfsnode.h> 54 55#include <assert.h> 56#include <err.h> 57#include <kvm.h> 58#include <stddef.h> 59#include <string.h> 60 61#include <libprocstat.h> 62#include "common_kvm.h" 63 64int 65kvm_read_all(kvm_t *kd, unsigned long addr, void *buf, size_t nbytes) 66{ 67 ssize_t error; 68 69 if (nbytes >= SSIZE_MAX) 70 return (0); 71 error = kvm_read(kd, addr, buf, nbytes); 72 return (error == (ssize_t)(nbytes)); 73} 74 75int 76kdevtoname(kvm_t *kd, struct cdev *dev, char *buf) 77{ 78 struct cdev si; 79 80 assert(buf); 81 if (!kvm_read_all(kd, (unsigned long)dev, &si, sizeof(si))) 82 return (1); 83 strlcpy(buf, si.si_name, SPECNAMELEN + 1); 84 return (0); 85} 86 87int 88ufs_filestat(kvm_t *kd, struct vnode *vp, struct vnstat *vn) 89{ 90 struct inode inode; 91 92 if (!kvm_read_all(kd, (unsigned long)VTOI(vp), &inode, sizeof(inode))) { 93 warnx("can't read inode at %p", (void *)VTOI(vp)); 94 return (1); 95 } 96 /* 97 * The st_dev from stat(2) is a dev_t. These kernel structures 98 * contain cdev pointers. We need to convert to dev_t to make 99 * comparisons 100 */ 101 vn->vn_fsid = dev2udev(kd, inode.i_dev); 102 vn->vn_fileid = inode.i_number; 103 vn->vn_mode = (mode_t)inode.i_mode; 104 vn->vn_size = inode.i_size; 105 return (0); 106} 107 108int 109devfs_filestat(kvm_t *kd, struct vnode *vp, struct vnstat *vn) 110{ 111 struct devfs_dirent devfs_dirent; 112 struct mount mount; 113 114 if (!kvm_read_all(kd, (unsigned long)getvnodedata(vp), &devfs_dirent, 115 sizeof(devfs_dirent))) { 116 warnx("can't read devfs_dirent at %p", 117 (void *)vp->v_data); 118 return (1); 119 } 120 if (!kvm_read_all(kd, (unsigned long)getvnodemount(vp), &mount, 121 sizeof(mount))) { 122 warnx("can't read mount at %p", 123 (void *)getvnodemount(vp)); 124 return (1); 125 } 126 vn->vn_fsid = mount.mnt_stat.f_fsid.val[0]; 127 vn->vn_fileid = devfs_dirent.de_inode; 128 vn->vn_mode = (devfs_dirent.de_mode & ~S_IFMT) | S_IFCHR; 129 vn->vn_size = 0; 130 return (0); 131} 132 133int 134nfs_filestat(kvm_t *kd, struct vnode *vp, struct vnstat *vn) 135{ 136 struct nfsnode nfsnode; 137 mode_t mode; 138 139 if (!kvm_read_all(kd, (unsigned long)VTONFS(vp), &nfsnode, 140 sizeof(nfsnode))) { 141 warnx("can't read nfsnode at %p", 142 (void *)VTONFS(vp)); 143 return (1); 144 } 145 vn->vn_fsid = nfsnode.n_vattr.va_fsid; 146 vn->vn_fileid = nfsnode.n_vattr.va_fileid; 147 vn->vn_size = nfsnode.n_size; 148 mode = (mode_t)nfsnode.n_vattr.va_mode; 149 switch (vp->v_type) { 150 case VREG: 151 mode |= S_IFREG; 152 break; 153 case VDIR: 154 mode |= S_IFDIR; 155 break; 156 case VBLK: 157 mode |= S_IFBLK; 158 break; 159 case VCHR: 160 mode |= S_IFCHR; 161 break; 162 case VLNK: 163 mode |= S_IFLNK; 164 break; 165 case VSOCK: 166 mode |= S_IFSOCK; 167 break; 168 case VFIFO: 169 mode |= S_IFIFO; 170 break; 171 default: 172 break; 173 }; 174 vn->vn_mode = mode; 175 return (0); 176} 177 178/* 179 * Read the cdev structure in the kernel in order to work out the 180 * associated dev_t 181 */ 182dev_t 183dev2udev(kvm_t *kd, struct cdev *dev) 184{ 185 struct cdev_priv priv; 186 187 assert(kd); 188 if (kvm_read_all(kd, (unsigned long)cdev2priv(dev), &priv, 189 sizeof(priv))) { 190 return ((dev_t)priv.cdp_inode); 191 } else { 192 warnx("can't convert cdev *%p to a dev_t\n", dev); 193 return (-1); 194 } 195} 196 197void * 198getvnodedata(struct vnode *vp) 199{ 200 return (vp->v_data); 201} 202 203struct mount * 204getvnodemount(struct vnode *vp) 205{ 206 return (vp->v_mount); 207} 208