70 lines
2.3 KiB
C
70 lines
2.3 KiB
C
/* $NetBSD: procfs_auxv.c,v 1.4 2019/09/27 14:36:18 christos Exp $ */
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/*-
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* Copyright (c) 2017 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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*
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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_auxv.c,v 1.4 2019/09/27 14:36:18 christos Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/kmem.h>
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#include <miscfs/procfs/procfs.h>
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int
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procfs_doauxv(struct lwp *curl, struct proc *p, struct pfsnode *pfs,
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struct uio *uio)
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{
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int error;
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void *buffer;
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size_t bufsize;
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if (uio->uio_rw != UIO_READ)
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return EOPNOTSUPP;
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if ((error = proc_getauxv(p, &buffer, &bufsize)) != 0)
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return error;
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if ((uintmax_t)uio->uio_offset < bufsize)
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error = uiomove((char *)buffer + uio->uio_offset,
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bufsize - uio->uio_offset, uio);
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else
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error = 0;
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kmem_free(buffer, bufsize);
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return error;
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}
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int
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procfs_validauxv(struct lwp *l, struct mount *mp)
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{
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return l != NULL && l->l_proc != NULL && l->l_proc->p_execsw != NULL;
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}
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