2 * Copyright (c) 1994 Christos Zoulas
3 * Copyright (c) 1995 Frank van der Linden
4 * Copyright (c) 1995 Scott Bartram
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
30 * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
31 * $FreeBSD: src/sys/compat/linux/linux_util.h,v 1.12.2.2 2000/11/02 23:31:28 obrien Exp $
32 * $DragonFly: src/sys/emulation/linux/linux_util.h,v 1.3 2003/06/23 17:55:27 dillon Exp $
36 * This file is pretty much the same as Christos' svr4_util.h
40 #ifndef _LINUX_UTIL_H_
41 #define _LINUX_UTIL_H_
43 #include "opt_linux.h"
46 #include <vm/vm_param.h>
48 #include <machine/vmparam.h>
50 #include <sys/sysent.h>
51 #include <sys/cdefs.h>
53 static __inline caddr_t stackgap_init(void);
54 static __inline void *stackgap_alloc(caddr_t *, size_t);
56 #define szsigcode (*(curproc->p_sysent->sv_szsigcode))
58 static __inline caddr_t
61 return (caddr_t)(PS_STRINGS - szsigcode - SPARE_USRSPACE);
64 static __inline void *
65 stackgap_alloc(sgp, sz)
69 void *p = (void *) *sgp;
72 if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode))
78 extern const char linux_emul_path[];
80 int linux_emul_find __P((struct proc *, caddr_t *, const char *, char *, char **, int));
82 #define CHECKALT(sgp, path, i) \
86 _error = linux_emul_find(curproc, sgp, linux_emul_path, path, \
88 if (_error == EFAULT) \
92 #define CHECKALTEXIST(sgp, path) CHECKALT(sgp, path, 0)
93 #define CHECKALTCREAT(sgp, path) CHECKALT(sgp, path, 1)
97 linux_ ## s(struct linux_ ## s ## _args *args) \
99 return (unsupported_msg(#s)); \
104 unsupported_msg(const char *fname)
106 struct proc *p = curproc;
107 printf("linux: syscall %s is obsoleted or not implemented (pid=%ld)\n",
108 fname, (long)p->p_pid);
112 #endif /* !_LINUX_UTIL_H_ */