| 1 | /*
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| 2 | * Copyright (c) 2017 CZ.NIC, z.s.p.o.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /*
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| 30 | * Authors:
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| 31 | * Jiří Zárevúcky (jzr) <zarevucky.jiri@gmail.com>
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| 32 | */
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| 33 |
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| 34 | /** @addtogroup bits
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| 35 | * @{
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| 36 | */
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| 37 | /** @file
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| 38 | */
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| 39 |
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| 40 | #ifndef _BITS_ERRNO_H_
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| 41 | #define _BITS_ERRNO_H_
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| 42 |
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| 43 | #include <_bits/native.h>
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| 44 | #include <_bits/decls.h>
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| 45 |
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| 46 | #ifdef __OPAQUE_ERRNO__
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| 47 | #include <_bits/__opaque_handle.h>
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| 48 |
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| 49 | __HELENOS_DECLS_BEGIN;
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| 50 | __opaque_handle(errno_t);
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| 51 | typedef errno_t sys_errno_t;
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| 52 | __HELENOS_DECLS_END;
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| 53 |
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| 54 | #define __errno_t(val) ((errno_t) val)
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| 55 |
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| 56 | #else
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| 57 |
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| 58 | __HELENOS_DECLS_BEGIN;
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| 59 |
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| 60 | /**
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| 61 | * The type of <errno.h> constants. Normally, this is an alias for `int`,
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| 62 | * but we support an alternative definition that allows us to verify
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| 63 | * integrity of error handling without using external tools.
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| 64 | */
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| 65 | typedef int errno_t;
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| 66 |
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| 67 | /**
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| 68 | * Same as `errno_t`, except represented as `sysarg_t`. Used in kernel in
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| 69 | * places where error number is always passed, but the type must be `sysarg_t`.
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| 70 | */
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| 71 | typedef sysarg_t sys_errno_t;
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| 72 |
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| 73 | __HELENOS_DECLS_END;
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| 74 |
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| 75 | /**
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| 76 | * A C++-style "cast" to `errno_t`.
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| 77 | * Used in <abi/errno.h> to define error constants. Normally, it doesn't do
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| 78 | * anything at all.
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| 79 | */
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| 80 | #define __errno_t(val) val
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| 81 |
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| 82 | #endif
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| 83 |
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| 84 | #endif
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