The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/ibcs2/ibcs2_util.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1994 Christos Zoulas
    5  * Copyright (c) 1995 Frank van der Linden
    6  * Copyright (c) 1995 Scott Bartram
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. The name of the author may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   22  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   23  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   24  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   25  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   26  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   27  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   28  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   29  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   30  *
   31  * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
   32  * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
   33  *
   34  * $FreeBSD: stable/12/sys/i386/ibcs2/ibcs2_util.h 326260 2017-11-27 15:08:52Z pfg $
   35  */
   36 
   37 /*
   38  * This file is pretty much the same as Christos' svr4_util.h
   39  * (for now).
   40  */
   41 
   42 #ifndef _IBCS2_UTIL_H_
   43 #define _IBCS2_UTIL_H_
   44 
   45 #include <sys/proc.h>
   46 #include <sys/uio.h>
   47 
   48 #ifdef DEBUG_IBCS2
   49 #define DPRINTF(a)      printf a;
   50 #else
   51 #define DPRINTF(a)
   52 #endif
   53 
   54 extern const char ibcs2_emul_path[];
   55 
   56 int     ibcs2_emul_find(struct thread *, char *, enum uio_seg, char **, int);
   57 
   58 #define CHECKALT(td, upath, pathp, i)                                   \
   59         do {                                                            \
   60                 int _error;                                             \
   61                                                                         \
   62                 _error = ibcs2_emul_find(td, upath, UIO_USERSPACE, pathp, i); \
   63                 if (*(pathp) == NULL)                                   \
   64                         return (_error);                                \
   65         } while (0)
   66 
   67 #define CHECKALTEXIST(td, upath, pathp) CHECKALT(td, upath, pathp, 0)
   68 #define CHECKALTCREAT(td, upath, pathp) CHECKALT(td, upath, pathp, 1)
   69 
   70 #ifdef SPX_HACK
   71 int     spx_open(struct thread *td);
   72 #endif
   73 
   74 #endif /* !_IBCS2_UTIL_H_ */

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