1 files changed, 193 insertions, 0 deletions

diff --git a/sys/miscfs/procfs/procfs_vfsops.c b/sys/miscfs/procfs/procfs_vfsops.c
new file mode 100644
index 000000000000..b2bcd701a934
--- /dev/null
+++ b/sys/miscfs/procfs/procfs_vfsops.c
@@ -0,0 +1,193 @@
+/*
+ * 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	8.7 (Berkeley) 5/10/95
+ *
+ * From:
+ *	$Id: procfs_vfsops.c,v 3.1 1993/12/15 09:40:17 jsp Exp $
+ */
+
+/*
+ * procfs VFS interface
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/time.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>
+#include <sys/buf.h>
+#include <sys/syslog.h>
+#include <sys/mount.h>
+#include <sys/signalvar.h>
+#include <sys/vnode.h>
+#include <miscfs/procfs/procfs.h>
+#include <vm/vm.h>			/* 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;
+{
+	u_int 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;
+	vfs_getnewfsid(mp);
+
+	(void) copyinstr(path, (caddr_t)mp->mnt_stat.f_mntonname, MNAMELEN, &size);
+	bzero(mp->mnt_stat.f_mntonname + size, MNAMELEN - size);
+
+	size = sizeof("procfs") - 1;
+	bcopy("procfs", mp->mnt_stat.f_mntfromname, size);
+	bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
+
+	return (0);
+}
+
+/*
+ * unmount system call
+ */
+procfs_unmount(mp, mntflags, p)
+	struct mount *mp;
+	int mntflags;
+	struct proc *p;
+{
+	int error;
+	int flags = 0;
+
+	if (mntflags & MNT_FORCE)
+		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;
+{
+	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) {
+		sbp->f_type = mp->mnt_vfc->vfc_typenum;
+		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);
+	}
+
+	return (0);
+}
+
+procfs_init(vfsp)
+	struct vfsconf *vfsp;
+{
+
+	return (0);
+}
+
+#define procfs_fhtovp ((int (*) __P((struct mount *, struct fid *, \
+	    struct mbuf *, struct vnode **, int *, struct ucred **)))einval)
+#define procfs_quotactl ((int (*) __P((struct mount *, int, uid_t, caddr_t, \
+	    struct proc *)))eopnotsupp)
+#define procfs_sync ((int (*) __P((struct mount *, int, struct ucred *, \
+	    struct proc *)))nullop)
+#define procfs_sysctl ((int (*) __P((int *, u_int, void *, size_t *, void *, \
+	    size_t, struct proc *)))eopnotsupp)
+#define procfs_vget ((int (*) __P((struct mount *, ino_t, struct vnode **))) \
+	    eopnotsupp)
+#define procfs_vptofh ((int (*) __P((struct vnode *, struct fid *)))einval)
+
+struct vfsops procfs_vfsops = {
+	procfs_mount,
+	procfs_start,
+	procfs_unmount,
+	procfs_root,
+	procfs_quotactl,
+	procfs_statfs,
+	procfs_sync,
+	procfs_vget,
+	procfs_fhtovp,
+	procfs_vptofh,
+	procfs_init,
+	procfs_sysctl,
+};