dbe6c38bc2
- Is it ok to convert DTYPE_PIPE to VFIFO and DTYPE_SOCKET to VSOCK?
- XXX: Avoid locking issue in ls -Rl /proc by avoiding curproc
- Does I/O to pipes work?
- XXX: Are there security implications?
75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
/* $NetBSD: procfs_fd.c,v 1.1 2003/01/03 13:21:18 christos Exp $ */
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/*-
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* Copyright (c) 2003 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: procfs_fd.c,v 1.1 2003/01/03 13:21:18 christos Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/file.h>
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#include <miscfs/procfs/procfs.h>
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int
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procfs_dofd(curp, p, pfs, uio)
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struct proc *curp;
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struct proc *p;
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struct pfsnode *pfs;
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struct uio *uio;
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{
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int error;
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struct file *fp;
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off_t offs;
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if ((error = procfs_getfp(pfs, &fp)) != 0)
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return error;
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offs = fp->f_offset;
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switch (uio->uio_rw) {
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case UIO_READ:
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return (*fp->f_ops->fo_read)(fp, &offs, uio, curp->p_ucred, 0);
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case UIO_WRITE:
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return (*fp->f_ops->fo_write)(fp, &offs, uio, curp->p_ucred, 0);
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default:
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panic("bad uio op");
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}
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}
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