From d6583bb2a13f329cf0332ef2570eb8bb8fc0e39c Mon Sep 17 00:00:00 2001 From: Theo de Raadt Date: Wed, 18 Oct 1995 08:53:40 +0000 Subject: initial import of NetBSD tree --- sys/miscfs/procfs/procfs_vfsops.c | 229 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 229 insertions(+) create mode 100644 sys/miscfs/procfs/procfs_vfsops.c (limited to 'sys/miscfs/procfs/procfs_vfsops.c') diff --git a/sys/miscfs/procfs/procfs_vfsops.c b/sys/miscfs/procfs/procfs_vfsops.c new file mode 100644 index 00000000000..d20bf8c8a53 --- /dev/null +++ b/sys/miscfs/procfs/procfs_vfsops.c @@ -0,0 +1,229 @@ +/* $NetBSD: procfs_vfsops.c,v 1.24 1995/06/18 14:47:39 cgd Exp $ */ + +/* + * Copyright (c) 1993 Jan-Simon Pendry + * Copyright (c) 1993 + * The Regents of the University of California. All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * Jan-Simon Pendry. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)procfs_vfsops.c 8.5 (Berkeley) 6/15/94 + */ + +/* + * procfs VFS interface + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include /* for PAGE_SIZE */ + +/* + * VFS Operations. + * + * mount system call + */ +/* ARGSUSED */ +procfs_mount(mp, path, data, ndp, p) + struct mount *mp; + char *path; + caddr_t data; + struct nameidata *ndp; + struct proc *p; +{ + size_t size; + + if (UIO_MX & (UIO_MX-1)) { + log(LOG_ERR, "procfs: invalid directory entry size"); + return (EINVAL); + } + + if (mp->mnt_flag & MNT_UPDATE) + return (EOPNOTSUPP); + + mp->mnt_flag |= MNT_LOCAL; + mp->mnt_data = 0; + getnewfsid(mp, makefstype(MOUNT_PROCFS)); + + (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN, &size); + bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size); + bzero(mp->mnt_stat.f_mntfromname, MNAMELEN); + bcopy("procfs", mp->mnt_stat.f_mntfromname, sizeof("procfs")); + return (0); +} + +/* + * unmount system call + */ +procfs_unmount(mp, mntflags, p) + struct mount *mp; + int mntflags; + struct proc *p; +{ + int error; + extern int doforce; + int flags = 0; + + if (mntflags & MNT_FORCE) { + /* procfs can never be rootfs so don't check for it */ + if (!doforce) + return (EINVAL); + flags |= FORCECLOSE; + } + + if (error = vflush(mp, 0, flags)) + return (error); + + return (0); +} + +procfs_root(mp, vpp) + struct mount *mp; + struct vnode **vpp; +{ + + return (procfs_allocvp(mp, vpp, 0, Proot)); +} + +/* ARGSUSED */ +procfs_start(mp, flags, p) + struct mount *mp; + int flags; + struct proc *p; +{ + + return (0); +} + +/* + * Get file system statistics. + */ +procfs_statfs(mp, sbp, p) + struct mount *mp; + struct statfs *sbp; + struct proc *p; +{ + +#ifdef COMPAT_09 + sbp->f_type = 10; +#else + sbp->f_type = 0; +#endif + sbp->f_bsize = PAGE_SIZE; + sbp->f_iosize = PAGE_SIZE; + sbp->f_blocks = 1; /* avoid divide by zero in some df's */ + sbp->f_bfree = 0; + sbp->f_bavail = 0; + sbp->f_files = maxproc; /* approx */ + sbp->f_ffree = maxproc - nprocs; /* approx */ + if (sbp != &mp->mnt_stat) { + bcopy(&mp->mnt_stat.f_fsid, &sbp->f_fsid, sizeof(sbp->f_fsid)); + bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); + bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); + } + strncpy(sbp->f_fstypename, mp->mnt_op->vfs_name, MFSNAMELEN); + return (0); +} + +procfs_quotactl(mp, cmds, uid, arg, p) + struct mount *mp; + int cmds; + uid_t uid; + caddr_t arg; + struct proc *p; +{ + + return (EOPNOTSUPP); +} + +procfs_sync(mp, waitfor) + struct mount *mp; + int waitfor; +{ + + return (0); +} + +procfs_vget(mp, ino, vpp) + struct mount *mp; + ino_t ino; + struct vnode **vpp; +{ + + return (EOPNOTSUPP); +} + +procfs_fhtovp(mp, fhp, vpp) + struct mount *mp; + struct fid *fhp; + struct vnode **vpp; +{ + + return (EINVAL); +} + +procfs_vptofh(vp, fhp) + struct vnode *vp; + struct fid *fhp; +{ + + return (EINVAL); +} + +procfs_init() +{ + + return (0); +} + +struct vfsops procfs_vfsops = { + MOUNT_PROCFS, + procfs_mount, + procfs_start, + procfs_unmount, + procfs_root, + procfs_quotactl, + procfs_statfs, + procfs_sync, + procfs_vget, + procfs_fhtovp, + procfs_vptofh, + procfs_init, +}; -- cgit v1.2.3