2fcd02eea0
following links, hence is usable for checking of presence of a symlink. Also slighly cleanup EXISTS and CREAT cases - use symbolic constants instead of 0/1. This is needed for emulation of readlink(2), lchown(2) and similar. Addresses kern/11757.
104 lines
4.4 KiB
C
104 lines
4.4 KiB
C
/* $NetBSD: compat_util.h,v 1.9 2001/01/22 19:50:56 jdolecek Exp $ */
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/*-
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* Copyright (c) 1994 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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/*
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* Copyright (c) 1995 Frank van der Linden
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* All rights reserved.
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _COMPAT_UTIL_H_
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#define _COMPAT_UTIL_H_
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struct emul;
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struct proc;
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struct emul_flags_xtab {
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unsigned long omask;
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unsigned long oval;
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unsigned long nval;
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};
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caddr_t stackgap_init __P((const struct emul *));
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void *stackgap_alloc __P((caddr_t *, size_t));
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int emul_find __P((struct proc *, caddr_t *, const char *, const char *,
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const char **, int));
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unsigned long emul_flags_translate(const struct emul_flags_xtab *tab,
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unsigned long in, unsigned long *leftover);
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void compat_offseterr __P((struct vnode *, char *msg));
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#define CHECK_ALT_FL_EXISTS 0
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#define CHECK_ALT_FL_CREAT 1
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#define CHECK_ALT_FL_SYMLINK 2
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#define CHECK_ALT_EXIST(p, sgp, path) \
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emul_find(p, sgp, p->p_emul->e_path, path, &(path), CHECK_ALT_FL_EXISTS)
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#define CHECK_ALT_CREAT(p, sgp, path) \
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emul_find(p, sgp, p->p_emul->e_path, path, &(path), CHECK_ALT_FL_CREAT)
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#define CHECK_ALT_SYMLINK(p, sgp, path) \
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emul_find(p, sgp, p->p_emul->e_path, path, &(path), CHECK_ALT_FL_SYMLINK)
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#endif /* !_COMPAT_UTIL_H_ */
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