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compat_util.h revision 1.14 
      1 /*	$NetBSD: compat_util.h,v 1.14 2003/06/29 22:29:13 fvdl Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1994 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 /*
     40  * Copyright (c) 1995 Frank van der Linden
     41  * All rights reserved.
     42  *
     43  * Redistribution and use in source and binary forms, with or without
     44  * modification, are permitted provided that the following conditions
     45  * are met:
     46  * 1. Redistributions of source code must retain the above copyright
     47  *    notice, this list of conditions and the following disclaimer.
     48  * 2. Redistributions in binary form must reproduce the above copyright
     49  *    notice, this list of conditions and the following disclaimer in the
     50  *    documentation and/or other materials provided with the distribution.
     51  * 3. The name of the author may not be used to endorse or promote products
     52  *    derived from this software without specific prior written permission
     53  *
     54  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     55  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     56  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     57  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     58  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     59  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     60  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     61  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     62  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     63  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     64  *
     65  */
     66 
     67 #ifndef	_COMPAT_UTIL_H_
     68 #define	_COMPAT_UTIL_H_
     69 
     70 struct emul;
     71 struct proc;
     72 
     73 struct emul_flags_xtab {
     74 	unsigned long omask;
     75 	unsigned long oval;
     76 	unsigned long nval;
     77 };
     78 
     79 caddr_t	stackgap_init(const struct proc *, size_t);
     80 void	*stackgap_alloc(const struct proc *, caddr_t *, size_t);
     81 
     82 int emul_find(struct proc *, caddr_t *, const char *, const char *,
     83 		   const char **, int);
     84 
     85 int emul_find_interp(struct proc *, const char *, char *);
     86 
     87 unsigned long emul_flags_translate(const struct emul_flags_xtab *tab,
     88 				   unsigned long in, unsigned long *leftover);
     89 
     90 void compat_offseterr(struct vnode *, char *msg);
     91 
     92 #define	CHECK_ALT_FL_EXISTS	0
     93 #define	CHECK_ALT_FL_CREAT	1
     94 #define	CHECK_ALT_FL_SYMLINK	2
     95 
     96 #define CHECK_ALT_EXIST(p, sgp, path) \
     97     emul_find(p, sgp, p->p_emul->e_path, path, &(path), CHECK_ALT_FL_EXISTS)
     98 
     99 #define CHECK_ALT_CREAT(p, sgp, path) \
    100     emul_find(p, sgp, p->p_emul->e_path, path, &(path), CHECK_ALT_FL_CREAT)
    101 
    102 #define CHECK_ALT_SYMLINK(p, sgp, path) \
    103     emul_find(p, sgp, p->p_emul->e_path, path, &(path), CHECK_ALT_FL_SYMLINK)
    104 
    105 #endif /* !_COMPAT_UTIL_H_ */
    106