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 64 int 65 kvm_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 75 int 76 kdevtoname(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 87 int 88 ufs_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 } 107 108 int 109 devfs_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 } 132 133 int 134 nfs_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 */ 182 dev_t 183 dev2udev(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 } 196 197 void * 198 getvnodedata(struct vnode *vp) 199 { 200 return (vp->v_data); 201 } 202 203 struct mount * 204 getvnodemount(struct vnode *vp) 205 { 206 return (vp->v_mount); 207 } 208