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Diffstat (limited to 'sys/miscfs/devfs/devfs_vfsops.c')
-rw-r--r--sys/miscfs/devfs/devfs_vfsops.c313
1 files changed, 0 insertions, 313 deletions
diff --git a/sys/miscfs/devfs/devfs_vfsops.c b/sys/miscfs/devfs/devfs_vfsops.c
deleted file mode 100644
index f440a83244e9..000000000000
--- a/sys/miscfs/devfs/devfs_vfsops.c
+++ /dev/null
@@ -1,313 +0,0 @@
-/*-
- * Copyright 1997,1998 Julian Elischer. All rights reserved.
- * julian@freebsd.org
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``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 HOLDER 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.
- *
- * $FreeBSD$
- *
- */
-
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/vnode.h>
-#include <sys/mount.h>
-#include <sys/malloc.h>
-
-#include <miscfs/devfs/devfsdefs.h>
-
-static MALLOC_DEFINE(M_DEVFSMNT, "DEVFS mount", "DEVFS mount structure");
-
-static int devfs_statfs( struct mount *mp, struct statfs *sbp, struct proc *p);
-
-/*-
- * Called from the generic VFS startups.
- * This is the second stage of DEVFS initialisation.
- * The probed devices have already been loaded and the
- * basic structure of the DEVFS created.
- * We take the oportunity to mount the hidden DEVFS layer, so that
- * devices from devfs get sync'd.
- */
-static int
-devfs_init(struct vfsconf *vfsp)
-{
- struct mount *mp = dev_root->dnp->dvm->mount;
- /*-
- * fill in the missing members on the "hidden" mount
- * we could almost use vfs_rootmountalloc() to do this.
- */
- lockinit(&mp->mnt_lock, PVFS, "vfslock", 0, 0);
- mp->mnt_op = vfsp->vfc_vfsops;
- mp->mnt_vfc = vfsp;
- mp->mnt_stat.f_type = vfsp->vfc_typenum;
- mp->mnt_flag |= vfsp->vfc_flags & MNT_VISFLAGMASK;
- strncpy(mp->mnt_stat.f_fstypename, vfsp->vfc_name, MFSNAMELEN);
- mp->mnt_vnodecovered = NULLVP;
-
- /* Mark a reference for the "invisible" blueprint mount */
- mp->mnt_vfc->vfc_refcount++;
- TAILQ_INSERT_TAIL(&mountlist, mp, mnt_list);
-
- printf("DEVFS: ready to run\n");
- return 0; /*XXX*/
-}
-
-/*-
- * mp - pointer to 'mount' structure
- * path - addr in user space of mount point (ie /usr or whatever)
- * data - addr in user space of mount params including the
- * name of the block special file to treat as a filesystem.
- * ndp - namei data pointer
- * p - proc pointer
- * devfs is special in that it doesn't require any device to be mounted..
- * It makes up its data as it goes along.
- * it must be mounted during single user.. until it is, only std{in/out/err}
- * and the root filesystem are available.
- */
-/*proto*/
-int
-devfs_mount(struct mount *mp, char *path, caddr_t data,
- struct nameidata *ndp, struct proc *p)
-{
- struct devfsmount *devfs_mp_p; /* devfs specific mount info */
- int error;
- u_int size;
-
-DBPRINT(("mount "));
-
- /*-
- * If they just want to update, we don't need to do anything.
- */
- if (mp->mnt_flag & MNT_UPDATE)
- {
- return 0;
- }
-
- /*-
- * Well, it's not an update, it's a real mount request.
- * Time to get dirty.
- * HERE we should check to see if we are already mounted here.
- */
-
- devfs_mp_p = (struct devfsmount *)malloc(sizeof *devfs_mp_p,
- M_DEVFSMNT, M_WAITOK);
- if (devfs_mp_p == NULL)
- return (ENOMEM);
- bzero(devfs_mp_p,sizeof(*devfs_mp_p));
- devfs_mp_p->mount = mp;
-
- /*-
- * Fill out some fields
- */
- mp->mnt_data = (qaddr_t)devfs_mp_p;
- if (mp->mnt_vfc == NULL)
- mp->mnt_stat.f_type = -1; /* doing hidden mountpoint */
- else
- mp->mnt_stat.f_type = mp->mnt_vfc->vfc_typenum;
- mp->mnt_stat.f_fsid.val[0] = (intptr_t)(void *)devfs_mp_p;
- mp->mnt_stat.f_fsid.val[1] = mp->mnt_stat.f_type;
- mp->mnt_flag |= MNT_LOCAL;
-
- if((error = dev_dup_plane(devfs_mp_p)) != 0)
- {
- mp->mnt_data = (qaddr_t)0;
- free((caddr_t)devfs_mp_p, M_DEVFSMNT);
- return (error);
- }
-
- /*-
- * Copy in the name of the directory the filesystem
- * is to be mounted on.
- * And we clear the remainder of the character strings
- * to be tidy.
- * Then, we try to fill in the filesystem stats structure
- * as best we can with whatever we can think of at the time
- */
-
- if(devfs_up_and_going) {
- copyinstr(path, (caddr_t)mp->mnt_stat.f_mntonname,
- sizeof(mp->mnt_stat.f_mntonname)-1, &size);
- bzero(mp->mnt_stat.f_mntonname + size,
- sizeof(mp->mnt_stat.f_mntonname) - size);
- } else {
- bcopy("dummy_mount", (caddr_t)mp->mnt_stat.f_mntonname,12);
- }
- bzero(mp->mnt_stat.f_mntfromname , MNAMELEN );
- bcopy("devfs",mp->mnt_stat.f_mntfromname, 5);
- (void)devfs_statfs(mp, &mp->mnt_stat, p);
- return 0;
-}
-
-
-/*-
- * Unmount the filesystem described by mp.
- */
-static int
-devfs_unmount( struct mount *mp, int mntflags, struct proc *p)
-{
- struct devfsmount *devfs_mp_p = (struct devfsmount *)mp->mnt_data;
- int flags = 0;
- int error;
-
- if (mntflags & MNT_FORCE) {
- flags |= FORCECLOSE;
- }
- error = vflush(mp, NULLVP, flags);
- if (error)
- return error;
-
-DBPRINT(("unmount "));
- devfs_free_plane(devfs_mp_p);
- free((caddr_t)devfs_mp_p, M_DEVFSMNT);
- mp->mnt_data = (qaddr_t)0;
- mp->mnt_flag &= ~MNT_LOCAL;
-
- return 0;
-}
-
-/* return the address of the root vnode in *vpp */
-static int
-devfs_root(struct mount *mp, struct vnode **vpp)
-{
- struct devfsmount *devfs_mp_p = (struct devfsmount *)(mp->mnt_data);
-
-DBPRINT(("root "));
- devfs_dntovn(devfs_mp_p->plane_root->dnp,vpp);
- return 0;
-}
-
-static int
-devfs_statfs( struct mount *mp, struct statfs *sbp, struct proc *p)
-{
- struct devfsmount *devfs_mp_p = (struct devfsmount *)mp->mnt_data;
-
-/*-
- * Fill in the stat block.
- */
-DBPRINT(("statfs "));
- sbp->f_type = mp->mnt_stat.f_type;
- sbp->f_flags = 0; /* XXX */
- sbp->f_bsize = 128;
- sbp->f_iosize = 1024; /* XXX*/
- sbp->f_blocks = 128;
- sbp->f_bfree = 0;
- sbp->f_bavail = 0;
- sbp->f_files = 128;
- sbp->f_ffree = 0; /* what to put in here? */
- sbp->f_fsid.val[0] = (intptr_t)(void *)devfs_mp_p;
- sbp->f_fsid.val[1] = mp->mnt_stat.f_type;
-
-/*-
- * Copy the mounted on and mounted from names into
- * the passed in stat block, if it is not the one
- * in the mount structure.
- */
- if (sbp != &mp->mnt_stat) {
- bcopy((caddr_t)mp->mnt_stat.f_mntonname,
- (caddr_t)&sbp->f_mntonname[0], MNAMELEN);
- bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
- (caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
- }
- return 0;
-}
-
-/*-
- * Go through the disk queues to initiate sandbagged IO;
- * go through the inodes to write those that have been modified;
- * initiate the writing of the super block if it has been modified.
- *
- * Note: we are always called with the filesystem marked `MPBUSY'.
- */
-static int
-devfs_sync(struct mount *mp, int waitfor,struct ucred *cred,struct proc *p)
-{
- register struct vnode *vp, *nvp;
- int error, allerror = 0;
-
-DBPRINT(("sync "));
-
- /*-
- * Write back modified superblock.
- * Consistency check that the superblock
- * is still in the buffer cache.
- */
- /*-
- * Write back each (modified) inode.
- */
-loop:
- for (vp = mp->mnt_vnodelist.lh_first; vp != NULL; vp = nvp) {
- /*-
- * If the vnode that we are about to sync is no longer
- * associated with this mount point, start over.
- */
- if (vp->v_mount != mp)
- goto loop;
- nvp = vp->v_mntvnodes.le_next;
- if (VOP_ISLOCKED(vp, NULL))
- continue;
- if (TAILQ_EMPTY(&vp->v_dirtyblkhd))
- continue;
- if (vp->v_type == VBLK) {
- if (vget(vp, LK_EXCLUSIVE, p))
- goto loop;
- error = VOP_FSYNC(vp, cred, waitfor, p);
- if (error)
- allerror = error;
- vput(vp);
- }
-#ifdef NOTYET
- else {
- struct timeval tv;
-
- tv = time;
- /* VOP_UPDATE(vp, &tv, &tv, waitfor == MNT_WAIT); */
- VOP_UPDATE(vp, &tv, &tv, 0);
- }
-#endif
- }
- /*-
- * Force stale file system control information to be flushed.
- *( except that htat makes no sense with devfs
- */
- return (allerror);
-}
-
-static struct vfsops devfs_vfsops = {
- devfs_mount,
- vfs_stdstart,
- devfs_unmount,
- devfs_root,
- vfs_stdquotactl,
- devfs_statfs,
- devfs_sync,
- vfs_stdvget,
- vfs_stdfhtovp,
- vfs_stdcheckexp,
- vfs_stdvptofh,
- devfs_init,
- vfs_stduninit,
- vfs_stdextattrctl,
-};
-
-VFS_SET(devfs_vfsops, devfs, 0);
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-05 03:18:11 +0000