X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/e2fac8b15b12a7979f72090454d850e612fc5b13..b0d623f7f2ae71ed96e60569f61f9a9a27016e80:/bsd/miscfs/fdesc/fdesc_vfsops.c?ds=sidebyside diff --git a/bsd/miscfs/fdesc/fdesc_vfsops.c b/bsd/miscfs/fdesc/fdesc_vfsops.c deleted file mode 100644 index 9d419783c..000000000 --- a/bsd/miscfs/fdesc/fdesc_vfsops.c +++ /dev/null @@ -1,307 +0,0 @@ -/* - * Copyright (c) 2000-2007 Apple Inc. All rights reserved. - * - * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ - * - * This file contains Original Code and/or Modifications of Original Code - * as defined in and that are subject to the Apple Public Source License - * Version 2.0 (the 'License'). You may not use this file except in - * compliance with the License. The rights granted to you under the License - * may not be used to create, or enable the creation or redistribution of, - * unlawful or unlicensed copies of an Apple operating system, or to - * circumvent, violate, or enable the circumvention or violation of, any - * terms of an Apple operating system software license agreement. - * - * Please obtain a copy of the License at - * http://www.opensource.apple.com/apsl/ and read it before using this file. - * - * The Original Code and all software distributed under the License are - * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER - * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, - * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. - * Please see the License for the specific language governing rights and - * limitations under the License. - * - * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ - */ -/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ -/* - * Copyright (c) 1992, 1993, 1995 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software donated 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. - * - * @(#)fdesc_vfsops.c 8.10 (Berkeley) 5/14/95 - * - */ -/* -* /dev/fd Filesystem - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -/* - * Mount the per-process file descriptors (/dev/fd) - */ -static int -fdesc_mount(struct mount *mp, __unused vnode_t devvp, __unused user_addr_t data, __unused vfs_context_t context) -{ - int error = 0; - struct fdescmount *fmp; - struct vnode *rvp; - - /* - * Update is a no-op - */ - if (mp->mnt_flag & MNT_UPDATE) - return (ENOTSUP); - - error = fdesc_allocvp(Froot, FD_ROOT, mp, &rvp, VDIR); - if (error) - return (error); - - MALLOC(fmp, struct fdescmount *, sizeof(struct fdescmount), - M_UFSMNT, M_WAITOK); /* XXX */ - - vnode_setnoflush(rvp); - vnode_ref(rvp); - vnode_put(rvp); - - fmp->f_root = rvp; - /* XXX -- don't mark as local to work around fts() problems */ - /*mp->mnt_flag |= MNT_LOCAL;*/ - mp->mnt_data = (qaddr_t) fmp; - vfs_getnewfsid(mp); - - bzero(mp->mnt_vfsstat.f_mntfromname, MAXPATHLEN); - bcopy("fdesc", mp->mnt_vfsstat.f_mntfromname, sizeof("fdesc")); - return (0); -} - -static int -fdesc_start(__unused struct mount *mp, __unused int flags, __unused vfs_context_t context) -{ - return (0); -} - -static int -fdesc_unmount(struct mount *mp, int mntflags, __unused vfs_context_t context) -{ - int error; - int flags = 0; - int force = 0; - struct vnode *rvp = VFSTOFDESC(mp)->f_root; - - if (mntflags & MNT_FORCE) { - flags |= FORCECLOSE; - force = 1; - } - - if ( vnode_isinuse(rvp, 1) && !force ) - return (EBUSY); - if ( (error = vflush(mp, rvp, flags|SKIPSYSTEM)) && !force ) - return (error); - - /* - * And mark for recycle after we drop its reference; it away for future re-use - */ - vnode_recycle(rvp); - /* - * Release reference on underlying root vnode - */ - vnode_rele(rvp); - /* - * Finally, throw away the fdescmount structure - */ - _FREE(mp->mnt_data, M_UFSMNT); /* XXX */ - mp->mnt_data = NULL; - - return (0); -} - -int -fdesc_root(struct mount *mp, struct vnode **vpp, __unused vfs_context_t context) -{ - struct vnode *vp; - - /* - * Return locked reference to root. - */ - vp = VFSTOFDESC(mp)->f_root; - vnode_get(vp); - *vpp = vp; - return (0); -} - -#if 0 -/* - * XXX commented out in mount.h - */ -int -fdesc_statfs(__unused struct mount *mp, struct vfsstatfs *sbp, vfs_context_t context) -{ - proc_t p = vfs_context_proc(context); - struct filedesc *fdp; - int lim; - int i; - int last; - int freefd; - - /* - * Compute number of free file descriptors. - * [ Strange results will ensue if the open file - * limit is ever reduced below the current number - * of open files... ] - */ - lim = p->p_rlimit[RLIMIT_NOFILE].rlim_cur; - fdp = p->p_fd; - last = min(fdp->fd_nfiles, lim); - freefd = 0; - for (i = fdp->fd_freefile; i < last; i++) - if (fdp->fd_ofiles[i] == NULL && - !(fdp->fd_ofileflags[i] & UF_RESERVED)) - freefd++; - - /* - * Adjust for the fact that the fdesc array may not - * have been fully allocated yet. - */ - if (fdp->fd_nfiles < lim) - freefd += (lim - fdp->fd_nfiles); - - sbp->f_flags = 0; - sbp->f_bsize = DEV_BSIZE; - sbp->f_iosize = DEV_BSIZE; - sbp->f_blocks = (uint64_t)2; /* 1K to keep df happy */ - sbp->f_bfree = 0; - sbp->f_bavail = 0; - sbp->f_files = (uint64_t)((unsigned long)(lim + 1)); /* Allow for "." */ - sbp->f_ffree = (uint64_t)((unsigned long)freefd); /* See comments above */ - - return (0); -} -#endif /* 0 */ - -static int -fdesc_vfs_getattr(__unused mount_t mp, struct vfs_attr *fsap, vfs_context_t context) -{ - VFSATTR_RETURN(fsap, f_bsize, DEV_BSIZE); - VFSATTR_RETURN(fsap, f_iosize, DEV_BSIZE); - VFSATTR_RETURN(fsap, f_blocks, 2); - VFSATTR_RETURN(fsap, f_bfree, 0); - VFSATTR_RETURN(fsap, f_bavail, 0); - VFSATTR_RETURN(fsap, f_fssubtype, 0); - - if (VFSATTR_IS_ACTIVE(fsap, f_objcount) || - VFSATTR_IS_ACTIVE(fsap, f_maxobjcount) || - VFSATTR_IS_ACTIVE(fsap, f_files) || - VFSATTR_IS_ACTIVE(fsap, f_ffree)) - { - proc_t p = vfs_context_proc(context); - struct filedesc *fdp; - int lim; - int i; - int last; - int freefd; - - /* - * Compute number of free file descriptors. - * [ Strange results will ensue if the open file - * limit is ever reduced below the current number - * of open files... ] - */ - lim = p->p_rlimit[RLIMIT_NOFILE].rlim_cur; - fdp = p->p_fd; - last = min(fdp->fd_nfiles, lim); - freefd = 0; - for (i = fdp->fd_freefile; i < last; i++) - if (fdp->fd_ofiles[i] == NULL && - !(fdp->fd_ofileflags[i] & UF_RESERVED)) - freefd++; - - /* - * Adjust for the fact that the fdesc array may not - * have been fully allocated yet. - */ - if (fdp->fd_nfiles < lim) - freefd += (lim - fdp->fd_nfiles); - - VFSATTR_RETURN(fsap, f_objcount, lim+1); - VFSATTR_RETURN(fsap, f_maxobjcount, lim+1); - VFSATTR_RETURN(fsap, f_files, lim+1); - VFSATTR_RETURN(fsap, f_ffree, freefd); - } - - return 0; -} - -static int -fdesc_sync(__unused struct mount *mp, __unused int waitfor, __unused vfs_context_t context) -{ - - return (0); -} - -#define fdesc_fhtovp (int (*) (mount_t, int, unsigned char *, vnode_t *, vfs_context_t))eopnotsupp -#define fdesc_sysctl (int (*) (int *, u_int, user_addr_t, size_t *, user_addr_t, size_t, vfs_context_t))eopnotsupp -#define fdesc_vget (int (*) (mount_t, ino64_t, vnode_t *, vfs_context_t))eopnotsupp -#define fdesc_vptofh (int (*) (vnode_t, int *, unsigned char *, vfs_context_t))eopnotsupp - -struct vfsops fdesc_vfsops = { - fdesc_mount, - fdesc_start, - fdesc_unmount, - fdesc_root, - NULL, /* quotactl */ - fdesc_vfs_getattr, -/* fdesc_statfs, XXX commented out in mount.h */ - fdesc_sync, - fdesc_vget, - fdesc_fhtovp, - fdesc_vptofh, - fdesc_init, - fdesc_sysctl, - NULL, - {NULL} -};