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comparison packages/error/current/include/codes.h @ 0:3111d98ba7b3 ecos-v1_1-release

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Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
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children 443894e2e912
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-1:000000000000 0:3111d98ba7b3
1 #ifndef CYGONCE_ERROR_CODES_H
2 #define CYGONCE_ERROR_CODES_H
3 //===========================================================================
4 //
5 // codes.h
6 //
7 // Common error code definitions
8 //
9 //===========================================================================
10 //####COPYRIGHTBEGIN####
11 //
12 // -------------------------------------------
13 // The contents of this file are subject to the Cygnus eCos Public License
14 // Version 1.0 (the "License"); you may not use this file except in
15 // compliance with the License. You may obtain a copy of the License at
16 // http://sourceware.cygnus.com/ecos
17 //
18 // Software distributed under the License is distributed on an "AS IS"
19 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
20 // License for the specific language governing rights and limitations under
21 // the License.
22 //
23 // The Original Code is eCos - Embedded Cygnus Operating System, released
24 // September 30, 1998.
25 //
26 // The Initial Developer of the Original Code is Cygnus. Portions created
27 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved.
28 // -------------------------------------------
29 //
30 //####COPYRIGHTEND####
31 //===========================================================================
32 //#####DESCRIPTIONBEGIN####
33 //
34 // Author(s): jlarmour@cygnus.co.uk
35 // Contributors: jlarmour@cygnus.co.uk
36 // Date: 1998-06-11
37 // Purpose: To provide a common set of error codes
38 // Description: This provides a common set of error codes that all packages can
39 // agree on. It doesn't preclude them defining their own error
40 // return system, but this is a preferable system to use to help
41 // error support be as general as possible.
42 //
43 // We try and conform to the ANSI/POSIX error code format, namely
44 // starting with the character 'E'
45 //
46 // Usage: #include <cyg/error/codes.h>
47 //
48 // Example:
49 //
50 // err=myfun();
51 // if (err != ENOERR)
52 // {
53 // str=strerror(err);
54 // printf("myfun returned error: %s\n", str);
55 // }
56 // else ....
57 //
58 //####DESCRIPTIONEND####
59 //
60 //===========================================================================
61
62 // CONFIGURATION
63
64 #include <pkgconf/error.h> // Configuration header
65 #include <cyg/infra/cyg_type.h> // externC
66
67 // Include the error package?
68 #ifdef CYGPKG_ERROR
69
70
71 // TYPE DEFINITIONS
72
73 // A type for error codes which may be useful to explain the purpose of
74 // a variable or return code. It shows that it contains an error code
75 // of the type defined below
76
77 typedef int Cyg_ErrNo;
78
79
80 // FUNCTION PROTOTYPES
81
82 // ANSI standard strerror() function as described by ANSI chap. 7.11.6.2.
83 // This is normally provided by <string.h>
84
85 externC char *
86 strerror( Cyg_ErrNo );
87
88 // prototype for the actual implementation. Equivalent to the above, but
89 // used internally by this product in preference
90
91 externC char *
92 _strerror( Cyg_ErrNo );
93
94
95 // CONSTANT DEFINITIONS
96
97 // If adding to this list, you must also update strerror() with its text
98 // If there is a common error of the same purpose on Unix, try and use its
99 // name and number. If not, use one above 200 to prevent future conflicts
100 //
101 // Do not use negative numbers, so that functions can return positive on
102 // success and -ESOMETHING on error, and it all works consistently.
103
104 #define ENOERR 0 // No error
105 #define EPERM 1 // Not permitted
106 #define ENOENT 2 // No such entity
107 #define ESRCH 3 // No such process
108 #define EINTR 4 // Operation interrupted
109 #define EIO 5 // I/O error
110 #define EBADF 9 // Bad file handle
111 #define EAGAIN 11 // Try again later
112 #define EWOULDBLOCK EAGAIN
113 #define ENOMEM 12 // Out of memory
114 #define EBUSY 16 // Resource busy
115 #define ENODEV 19 // No such device
116 #define EINVAL 22 // Invalid argument
117 #define EMFILE 24 // Too many open files
118 #define EDOM 33 // Argument to math function outside valid
119 // domain
120 #define ERANGE 34 // Math result cannot be represented
121 #define ENOSYS 38 // Function not implemented
122
123 #define EEOF 200 // End of file reached
124 #define ENOSUPP 201 // Operation not supported
125 #define EDEVNOSUPP 202 // Device does not support this operation
126
127 #endif // ifdef CYGPKG_ERROR
128
129 #endif // CYGONCE_ERROR_CODES_H multiple inclusion protection
130
131 // EOF codes.h