procfs_vfsops.c revision 1.3
1 1.1 pk /* 2 1.2 pk * Copyright (c) 1993 Paul Kranenburg 3 1.2 pk * All rights reserved. 4 1.2 pk * 5 1.2 pk * Redistribution and use in source and binary forms, with or without 6 1.2 pk * modification, are permitted provided that the following conditions 7 1.2 pk * are met: 8 1.2 pk * 1. Redistributions of source code must retain the above copyright 9 1.2 pk * notice, this list of conditions and the following disclaimer. 10 1.2 pk * 2. Redistributions in binary form must reproduce the above copyright 11 1.2 pk * notice, this list of conditions and the following disclaimer in the 12 1.2 pk * documentation and/or other materials provided with the distribution. 13 1.2 pk * 3. All advertising materials mentioning features or use of this software 14 1.2 pk * must display the following acknowledgement: 15 1.3 pk * This product includes software developed by Paul Kranenburg. 16 1.2 pk * 4. The name of the author may not be used to endorse or promote products 17 1.2 pk * derived from this software withough specific prior written permission 18 1.2 pk * 19 1.2 pk * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 1.2 pk * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 1.2 pk * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 1.2 pk * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 1.2 pk * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 1.2 pk * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 1.2 pk * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 1.2 pk * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 1.2 pk * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 1.2 pk * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 1.2 pk * 30 1.3 pk * $Id: procfs_vfsops.c,v 1.3 1993/08/24 16:47:25 pk Exp $ 31 1.2 pk */ 32 1.2 pk 33 1.2 pk /* 34 1.2 pk * PROCFS VFS interface routines 35 1.1 pk */ 36 1.1 pk 37 1.1 pk #include "param.h" 38 1.1 pk #include "time.h" 39 1.1 pk #include "kernel.h" 40 1.1 pk #include "proc.h" 41 1.1 pk #include "buf.h" 42 1.1 pk #include "mount.h" 43 1.1 pk #include "signalvar.h" 44 1.1 pk #include "vnode.h" 45 1.1 pk 46 1.1 pk #include "pfsnode.h" 47 1.1 pk 48 1.1 pk extern struct vnodeops pfs_vnodeops; 49 1.1 pk 50 1.1 pk /* 51 1.1 pk * mfs vfs operations. 52 1.1 pk */ 53 1.1 pk int pfs_mount(); 54 1.1 pk int pfs_start(); 55 1.1 pk int pfs_unmount(); 56 1.1 pk int pfs_root(); 57 1.1 pk int pfs_quotactl(); 58 1.1 pk int pfs_statfs(); 59 1.1 pk int pfs_sync(); 60 1.1 pk int pfs_fhtovp(); 61 1.1 pk int pfs_vptofh(); 62 1.1 pk int pfs_init(); 63 1.1 pk 64 1.1 pk struct vfsops procfs_vfsops = { 65 1.1 pk pfs_mount, 66 1.1 pk pfs_start, 67 1.1 pk pfs_unmount, 68 1.1 pk pfs_root, 69 1.1 pk pfs_quotactl, 70 1.1 pk pfs_statfs, 71 1.1 pk pfs_sync, 72 1.1 pk pfs_fhtovp, 73 1.1 pk pfs_vptofh, 74 1.1 pk pfs_init, 75 1.1 pk }; 76 1.1 pk 77 1.1 pk /* 78 1.1 pk * VFS Operations. 79 1.1 pk * 80 1.1 pk * mount system call 81 1.1 pk */ 82 1.1 pk /* ARGSUSED */ 83 1.1 pk pfs_mount(mp, path, data, ndp, p) 84 1.1 pk register struct mount *mp; 85 1.1 pk char *path; 86 1.1 pk caddr_t data; 87 1.1 pk struct nameidata *ndp; 88 1.1 pk struct proc *p; 89 1.1 pk { 90 1.1 pk #if 0 91 1.1 pk struct pfs_args args; 92 1.1 pk #endif 93 1.1 pk struct vnode *pvp; 94 1.1 pk u_int size; 95 1.1 pk int error; 96 1.1 pk 97 1.1 pk if (mp->mnt_flag & MNT_UPDATE) { 98 1.1 pk return (0); 99 1.1 pk } 100 1.1 pk 101 1.1 pk #if 0 102 1.1 pk if (error = copyin(data, (caddr_t)&args, sizeof (struct pfs_args))) 103 1.1 pk return (error); 104 1.1 pk #endif 105 1.1 pk (void) copyinstr(path, (caddr_t)mp->mnt_stat.f_mntonname, MNAMELEN, &size); 106 1.1 pk bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); 107 1.1 pk 108 1.1 pk size = sizeof("proc") - 1; 109 1.1 pk bcopy("proc", mp->mnt_stat.f_mntfromname, size); 110 1.1 pk bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size); 111 1.1 pk 112 1.1 pk (void) pfs_statfs(mp, &mp->mnt_stat, p); 113 1.1 pk return (0); 114 1.1 pk } 115 1.1 pk 116 1.1 pk /* 117 1.1 pk * unmount system call 118 1.1 pk */ 119 1.1 pk pfs_unmount(mp, mntflags, p) 120 1.1 pk struct mount *mp; 121 1.1 pk int mntflags; 122 1.1 pk struct proc *p; 123 1.1 pk { 124 1.1 pk return (0); 125 1.1 pk } 126 1.1 pk 127 1.1 pk pfs_root(mp, vpp) 128 1.1 pk struct mount *mp; 129 1.1 pk struct vnode **vpp; 130 1.1 pk { 131 1.1 pk struct vnode *vp; 132 1.1 pk struct pfsnode *pfsp; 133 1.1 pk int error; 134 1.1 pk 135 1.1 pk error = getnewvnode(VT_PROCFS, mp, &pfs_vnodeops, &vp); 136 1.1 pk if (error) 137 1.1 pk return error; 138 1.1 pk 139 1.1 pk vp->v_type = VDIR; 140 1.1 pk vp->v_flag = VROOT; 141 1.1 pk pfsp = VTOPFS(vp); 142 1.1 pk pfsp->pfs_vnode = vp; 143 1.1 pk pfsp->pfs_pid = 0; 144 1.1 pk 145 1.1 pk *vpp = vp; 146 1.1 pk return 0; 147 1.1 pk } 148 1.1 pk 149 1.1 pk /* 150 1.1 pk */ 151 1.1 pk /* ARGSUSED */ 152 1.1 pk pfs_start(mp, flags, p) 153 1.1 pk struct mount *mp; 154 1.1 pk int flags; 155 1.1 pk struct proc *p; 156 1.1 pk { 157 1.1 pk return 0; 158 1.1 pk } 159 1.1 pk 160 1.1 pk /* 161 1.1 pk * Get file system statistics. 162 1.1 pk */ 163 1.1 pk pfs_statfs(mp, sbp, p) 164 1.1 pk struct mount *mp; 165 1.1 pk struct statfs *sbp; 166 1.1 pk struct proc *p; 167 1.1 pk { 168 1.1 pk sbp->f_type = MOUNT_PROCFS; 169 1.1 pk sbp->f_fsize = nprocs; 170 1.1 pk sbp->f_bsize = 0; 171 1.1 pk sbp->f_blocks = 0; 172 1.1 pk sbp->f_bfree = maxproc - nprocs; 173 1.1 pk sbp->f_bavail = 0; 174 1.1 pk sbp->f_files = 0; 175 1.1 pk sbp->f_ffree = 0; 176 1.1 pk 177 1.1 pk return 0; 178 1.1 pk } 179 1.1 pk 180 1.1 pk 181 1.1 pk pfs_quotactl(mp, cmds, uid, arg, p) 182 1.1 pk struct mount *mp; 183 1.1 pk int cmds; 184 1.1 pk uid_t uid; 185 1.1 pk caddr_t arg; 186 1.1 pk struct proc *p; 187 1.1 pk { 188 1.1 pk return EOPNOTSUPP; 189 1.1 pk } 190 1.1 pk 191 1.1 pk pfs_sync(mp, waitfor) 192 1.1 pk struct mount *mp; 193 1.1 pk int waitfor; 194 1.1 pk { 195 1.1 pk return 0; 196 1.1 pk } 197 1.1 pk 198 1.1 pk pfs_fhtovp(mp, fhp, vpp) 199 1.1 pk register struct mount *mp; 200 1.1 pk struct fid *fhp; 201 1.1 pk struct vnode **vpp; 202 1.1 pk { 203 1.1 pk return EINVAL; 204 1.1 pk } 205 1.1 pk 206 1.1 pk pfs_vptofh(vp, fhp) 207 1.1 pk struct vnode *vp; 208 1.1 pk struct fid *fhp; 209 1.1 pk { 210 1.1 pk return EINVAL; 211 1.1 pk } 212 1.1 pk 213 1.1 pk pfs_init() 214 1.1 pk { 215 1.1 pk return 0; 216 1.1 pk } 217
Indexes created Mon Sep 29 21:09:56 GMT 2025