diff options
Diffstat (limited to 'sys/contrib/lomac/lomacfs_vfsops.c')
| -rw-r--r-- | sys/contrib/lomac/lomacfs_vfsops.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/sys/contrib/lomac/lomacfs_vfsops.c b/sys/contrib/lomac/lomacfs_vfsops.c deleted file mode 100644 index 76adb27..0000000 --- a/sys/contrib/lomac/lomacfs_vfsops.c +++ /dev/null @@ -1,190 +0,0 @@ -/*- - * Copyright (c) 2001 Networks Associates Technology, Inc. - * All rights reserved. - * - * 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 AUTHOR 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 AUTHOR 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/lock.h> -#include <sys/mutex.h> -#include <sys/proc.h> -#include <sys/module.h> -#include <sys/mount.h> -#include <sys/namei.h> -#include <sys/vnode.h> - -#include "lomacfs.h" -#include "kernel_mediate.h" - -MALLOC_DEFINE(M_LOMACFS, "LOMACFS", "LOMAC filesystem objects"); - -static int lomacfs_mount(struct mount *mp, char *path, caddr_t data, - struct nameidata *ndp, struct thread *td); -static int lomacfs_statfs(struct mount *mp, struct statfs *sbp, - struct thread *td); -static int lomacfs_unmount(struct mount *mp, int mntflags, struct thread *td); - -static int -lomacfs_mount(struct mount *mp, char *path, caddr_t data, - struct nameidata *ndp, struct thread *td) { - - if (mp->mnt_flag & MNT_UPDATE || VISLOMAC(mp->mnt_vnodecovered)) - return (EOPNOTSUPP); - - mp->mnt_flag |= MNT_LOCAL; - mp->mnt_flag &= ~MNT_RDONLY; - mp->mnt_data = malloc(sizeof(struct lomac_mount), M_LOMACFS, - M_WAITOK | M_ZERO); - vfs_getnewfsid(mp); - - strncpy(mp->mnt_stat.f_mntfromname, "lomacfs", MNAMELEN); - (void)lomacfs_statfs(mp, &mp->mnt_stat, td); - - /* - * Keep around an extra ref for dounmount() to vrele() after the - * VFS_UNMOUNT()... (who knows...) - */ - vref(mp->mnt_vnodecovered); - if (VOP_ISLOCKED(mp->mnt_vnodecovered, NULL)) - VOP_UNLOCK(mp->mnt_vnodecovered, 0, td); - - return (0); -} - -static int -lomacfs_statfs(struct mount *mp, struct statfs *sbp, struct thread *td) { - struct statfs tmpstat; - int error; - - bzero(&tmpstat, sizeof(tmpstat)); - - error = VFS_STATFS(mp->mnt_vnodecovered->v_mount, &tmpstat, td); - if (error) - return (error); - - sbp->f_type = tmpstat.f_type; - sbp->f_flags = tmpstat.f_flags; - sbp->f_bsize = tmpstat.f_bsize; - sbp->f_iosize = tmpstat.f_iosize; - sbp->f_blocks = tmpstat.f_blocks; - sbp->f_bfree = tmpstat.f_bfree; - sbp->f_bavail = tmpstat.f_bavail; - sbp->f_files = tmpstat.f_files; - sbp->f_ffree = tmpstat.f_ffree; - 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); - } - return (0); -} - -static int -lomacfs_unmount(struct mount *mp, int mntflags, struct thread *td) { - struct vnode *crootvp = VFSTOLOMAC(mp)->lm_rootvp; - int error; - int flags = 0; - - if (mntflags & MNT_FORCE) - flags |= FORCECLOSE; - - if (VFSTOLOMAC(mp)->lm_flags & LM_TOOKROOT) { - mtx_lock(&crootvp->v_interlock); - crootvp->v_flag |= VROOT; - mtx_unlock(&crootvp->v_interlock); - } - - error = vflush(mp, 1, flags); /* have an extra root ref */ - if (error) - return (error); - - free(VFSTOLOMAC(mp), M_LOMACFS); - - /* bye, lomacfs. */ - return (0); -} - -static int -lomacfs_root(struct mount *mp, struct vnode **vpp) { - int error; - - if (VFSTOLOMAC(mp)->lm_rootvp == NULL) { - struct vnode *rootvp, *crootvp; - - crootvp = mp->mnt_vnodecovered; - error = lomacfs_node_alloc(mp, NULL, NULL, crootvp, &rootvp); - if (error) - return (error); - /* - * Reference twice to match the rest of the lomacfs vnodes. - */ - vref(crootvp); - vref(crootvp); - VFSTOLOMAC(mp)->lm_rootvp = rootvp; - /* - * This releases the lock on root, but it doesn't release - * the reference so that root won't "disappear" until - * unmount. - */ - error = VOP_UNLOCK(rootvp, 0, curthread); - if (error) - return (error); - /* - * This is some strange magic here... I need to pretend - * that the mounted-on directory isn't a root vnode if I - * want things like __getcwd() to just fail and not crash. - */ - mtx_lock(&crootvp->v_interlock); - if (crootvp->v_flag & VROOT && crootvp == rootvnode) { - crootvp->v_flag &= ~VROOT; - VFSTOLOMAC(mp)->lm_flags |= LM_TOOKROOT; - } - mtx_unlock(&crootvp->v_interlock); - } - *vpp = VFSTOLOMAC(mp)->lm_rootvp; - return (vget(*vpp, LK_EXCLUSIVE, curthread)); -} - -static struct vfsops lomacfs_vfsops = { - lomacfs_mount, - vfs_stdstart, - lomacfs_unmount, - lomacfs_root, - vfs_stdquotactl, - lomacfs_statfs, - vfs_stdsync, - vfs_stdvget, - vfs_stdfhtovp, - vfs_stdcheckexp, - vfs_stdvptofh, - vfs_stdinit, - vfs_stduninit, - vfs_stdextattrctl -}; -VFS_SET(lomacfs_vfsops, lomacfs, VFCF_LOOPBACK); -MODULE_VERSION(lomacfs, 1); -MODULE_DEPEND(lomacfs, lomac_plm, 1, 1, 1); |
