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annotate packages/compat/posix/current/src/misc.cxx @ 121:6bd9d475ed4b ecos-sw-2000-09-04

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Merge from eCos master repository on 2000-09-04-20:50:20-BST
author jlarmour
date Mon, 04 Sep 2000 20:24:12 +0000
parents 6ed91473a1cd
children 0c2b7be0d798
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1 //==========================================================================
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2 //
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3 // misc.cxx
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4 //
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5 // POSIX misc function implementations
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): nickg
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35 // Contributors: nickg
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36 // Date: 2000-07-18
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37 // Purpose: POSIX misc function implementation
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38 // Description: This file contains the implementation of miscellaneous POSIX
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39 // functions that do not belong elsewhere.
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40 //
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41 //
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42 //
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43 //####DESCRIPTIONEND####
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44 //
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45 //==========================================================================
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46
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47 #include <pkgconf/system.h>
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48 #include <pkgconf/hal.h>
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49 #include <pkgconf/kernel.h>
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50 #include <pkgconf/posix.h>
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51
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52 #include <cyg/kernel/ktypes.h> // base kernel types
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53 #include <cyg/infra/cyg_trac.h> // tracing macros
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54 #include <cyg/infra/cyg_ass.h> // assertion macros
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55
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56 #include "pprivate.h" // POSIX private header
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57
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58 #include <unistd.h>
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59 #include <sys/utsname.h> // My header
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60 #include <string.h> // strcpy
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61 #include <limits.h>
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62 #include <time.h>
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63
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64 // -------------------------------------------------------------------------
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65 // Supply some suitable values for constants that may not be present
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66 // in all configurations.
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67
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68 #ifndef MQ_OPEN_MAX
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69 #define MQ_OPEN_MAX 0
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70 #endif
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71 #ifndef MQ_PRIO_MAX
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72 #define MQ_PRIO_MAX 0
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73 #endif
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74
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75 // -------------------------------------------------------------------------
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76
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77 #define __string(_x) #_x
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78 #define __xstring(_x) __string(_x)
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79
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80 // -------------------------------------------------------------------------
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81 // utsname()
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82
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83 __externC int uname( struct utsname *name )
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84 {
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85 CYG_REPORT_FUNCTYPE( "returning %d" );
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86
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87 strcpy( name->sysname, "eCos" );
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88 strcpy( name->nodename, "" ); // should use gethostname()
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89 strcpy( name->release, __xstring( CYGNUM_KERNEL_VERSION_MAJOR ) );
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90 strcpy( name->version, __xstring( CYGNUM_KERNEL_VERSION_MINOR ) );
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91 strcpy( name->machine, "" );
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92
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93 CYG_REPORT_RETVAL(0);
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94 return 0;
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95 }
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96
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97 // -------------------------------------------------------------------------
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98 // sysconf()
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99
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100 #define SC_CASE( _name, _val ) case _name: return _val
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101
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102 __externC long sysconf( int name )
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103 {
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104
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105 switch( name )
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106 {
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107 SC_CASE( _SC_AIO_LISTIO_MAX, AIO_LISTIO_MAX );
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108 SC_CASE( _SC_AIO_MAX, AIO_MAX );
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109 SC_CASE( _SC_AIO_PRIO_DELTA_MAX, AIO_PRIO_DELTA_MAX );
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110 SC_CASE( _SC_ARG_MAX, ARG_MAX );
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111 SC_CASE( _SC_CHILD_MAX, CHILD_MAX );
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112 SC_CASE( _SC_DELAYTIMER_MAX, DELAYTIMER_MAX );
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113 SC_CASE( _SC_GETGR_R_SIZE_MAX, 0 );
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114 SC_CASE( _SC_GETPW_R_SIZE_MAX, 0 );
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115 SC_CASE( _SC_LOGIN_NAME_MAX, LOGIN_NAME_MAX );
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116 SC_CASE( _SC_MQ_OPEN_MAX, MQ_OPEN_MAX );
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117 SC_CASE( _SC_MQ_PRIO_MAX, MQ_PRIO_MAX );
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118 SC_CASE( _SC_NGROUPS_MAX, NGROUPS_MAX );
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119 SC_CASE( _SC_OPEN_MAX, OPEN_MAX );
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120 SC_CASE( _SC_PAGESIZE, PAGESIZE );
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121 SC_CASE( _SC_RTSIG_MAX, RTSIG_MAX );
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122 SC_CASE( _SC_SEM_NSEMS_MAX, SEM_NSEMS_MAX );
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123 SC_CASE( _SC_SEM_VALUE_MAX, SEM_VALUE_MAX );
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124 SC_CASE( _SC_SIGQUEUE_MAX, SIGQUEUE_MAX );
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125 SC_CASE( _SC_STREAM_MAX, STREAM_MAX );
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126 SC_CASE( _SC_THREAD_DESTRUCTOR_ITERATIONS, PTHREAD_DESTRUCTOR_ITERATIONS );
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127 SC_CASE( _SC_THREAD_KEYS_MAX, PTHREAD_KEYS_MAX );
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128 SC_CASE( _SC_THREAD_STACK_MIN, PTHREAD_STACK_MIN );
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129 SC_CASE( _SC_THREAD_THREADS_MAX, PTHREAD_THREADS_MAX );
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130 SC_CASE( _SC_TIMER_MAX, TIMER_MAX );
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131 SC_CASE( _SC_TTY_NAME_MAX, TTY_NAME_MAX );
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132 SC_CASE( _SC_TZNAME_MAX, TZNAME_MAX );
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133 SC_CASE( _SC_VERSION, _POSIX_VERSION );
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134
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135 case _SC_CLK_TCK:
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136 {
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137 struct timespec ts;
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138 ts.tv_sec = 1;
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jlarmour
parents:
diff changeset
139 ts.tv_nsec = 0;
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jlarmour
parents:
diff changeset
140 cyg_tick_count ticks = cyg_timespec_to_ticks( &ts );
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jlarmour
parents:
diff changeset
141 return ticks;
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jlarmour
parents:
diff changeset
142 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
143
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
144 case _SC_ASYNCHRONOUS_IO:
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jlarmour
parents:
diff changeset
145 #ifdef _POSIX_ASYNCHRONOUS_IO
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jlarmour
parents:
diff changeset
146 return 1;
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jlarmour
parents:
diff changeset
147 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
148 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
149 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
150
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
151 case _SC_FSYNC:
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jlarmour
parents:
diff changeset
152 #ifdef _POSIX_FSYNC
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jlarmour
parents:
diff changeset
153 return 1;
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jlarmour
parents:
diff changeset
154 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
155 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
156 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
157
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
158 case _SC_JOB_CONTROL:
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jlarmour
parents:
diff changeset
159 #ifdef _POSIX_JOB_CONTROL
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jlarmour
parents:
diff changeset
160 return 1;
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jlarmour
parents:
diff changeset
161 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
162 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
163 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
164
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
165 case _SC_MAPPED_FILES:
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jlarmour
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diff changeset
166 #ifdef _POSIX_MAPPED_FILES
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parents:
diff changeset
167 return 1;
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jlarmour
parents:
diff changeset
168 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
169 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
170 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
171
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
172 case _SC_MEMLOCK:
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jlarmour
parents:
diff changeset
173 #ifdef _POSIX_MEMLOCK
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jlarmour
parents:
diff changeset
174 return 1;
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jlarmour
parents:
diff changeset
175 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
176 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
177 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
178
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
179 case _SC_MEMLOCK_RANGE:
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diff changeset
180 #ifdef _POSIX_MEMLOCK_RANGE
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181 return 1;
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diff changeset
182 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
183 return -1 ;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents:
diff changeset
184 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
185
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
186 case _SC_MEMORY_PROTECTION:
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diff changeset
187 #ifdef _POSIX_MEMORY_PROTECTION
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diff changeset
188 return 1;
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jlarmour
parents:
diff changeset
189 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
190 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
191 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
192
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
193 case _SC_MESSAGE_PASSING:
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diff changeset
194 #ifdef _POSIX_MESSAGE_PASSING
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195 return 1;
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jlarmour
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diff changeset
196 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
197 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents:
diff changeset
198 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
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diff changeset
199
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
200 case _SC_PRIORITIZED_IO:
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jlarmour
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diff changeset
201 #ifdef _POSIX_PRIORITIZED_IO
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diff changeset
202 return 1;
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jlarmour
parents:
diff changeset
203 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
204 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
205 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
206
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
207 case _SC_PRIORITY_SCHEDULING:
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jlarmour
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diff changeset
208 #ifdef _POSIX_PRIORITY_SCHEDULING
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diff changeset
209 return 1;
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jlarmour
parents:
diff changeset
210 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
211 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
212 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
213
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
214 case _SC_REALTIME_SIGNALS:
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jlarmour
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diff changeset
215 #ifdef _POSIX_REALTIME_SIGNALS
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parents:
diff changeset
216 return 1;
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jlarmour
parents:
diff changeset
217 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
218 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
219 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
220
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
221 case _SC_SAVED_IDS:
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jlarmour
parents:
diff changeset
222 #ifdef _POSIX_SAVED_IDS
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jlarmour
parents:
diff changeset
223 return 1;
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jlarmour
parents:
diff changeset
224 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
225 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
226 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
227
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
228 case _SC_SEMAPHORES:
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jlarmour
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diff changeset
229 #ifdef _POSIX_SEMAPHORES
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jlarmour
parents:
diff changeset
230 return 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
231 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
232 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
233 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
234
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
235 case _SC_SHARED_MEMORY_OBJECTS:
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jlarmour
parents:
diff changeset
236 #ifdef _POSIX_SHARED_MEMORY_OBJECTS
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jlarmour
parents:
diff changeset
237 return 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
238 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
239 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
240 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
241
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
242 case _SC_SYNCHRONIZED_IO:
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jlarmour
parents:
diff changeset
243 #ifdef _POSIX_SYNCHRONIZED_IO
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jlarmour
parents:
diff changeset
244 return 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
245 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
246 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
247 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
248
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
249 case _SC_THREADS:
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jlarmour
parents:
diff changeset
250 #ifdef _POSIX_THREADS
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jlarmour
parents:
diff changeset
251 return 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
252 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
253 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
254 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
255
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
256 case _SC_THREAD_ATTR_STACKADDR:
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jlarmour
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diff changeset
257 #ifdef _POSIX_THREAD_ATTR_STACKADDR
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jlarmour
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diff changeset
258 return 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
259 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
260 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
261 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
262
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
263 case _SC_THREAD_ATTR_STACKSIZE:
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diff changeset
264 #ifdef _POSIX_THREAD_ATTR_STACKSIZE
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diff changeset
265 return 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
266 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
267 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
268 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
269
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
270 case _SC_THREAD_PRIO_INHERIT:
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jlarmour
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diff changeset
271 #ifdef _POSIX_THREAD_PRIO_INHERIT
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diff changeset
272 return 1;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
273 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
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parents: 115
diff changeset
274 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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parents:
diff changeset
275 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
276
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
277 case _SC_THREAD_PRIO_PROTECT:
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jlarmour
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diff changeset
278 #ifdef _POSIX_THREAD_PRIO_PROTECT
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diff changeset
279 return 1;
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jlarmour
parents:
diff changeset
280 #else
121
6bd9d475ed4b Merge from eCos master repository on 2000-09-04-20:50:20-BST
jlarmour
parents: 115
diff changeset
281 return -1;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
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diff changeset
282 #endif
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
283
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents:
diff changeset
284 case _SC_THREAD_PRIORITY_SCHEDULING:
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diff changeset
285 #ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
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jlarmour
parents:
diff changeset
286 return 1;
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287 #else
121
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288 return -1;
115
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289 #endif
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290
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291 case _SC_THREAD_PROCESS_SHARED:
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292 #ifdef _POSIX_THREAD_PROCESS_SHARED
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293 return 1;
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294 #else
121
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295 return -1;
115
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296 #endif
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297
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298 case _SC_THREAD_SAFE_FUNCTIONS:
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299 #ifdef _POSIX_THREAD_SAFE_FUNCTIONS
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300 return 1;
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301 #else
121
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302 return -1;
115
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303 #endif
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304
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305 case _SC_TIMERS:
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306 #ifdef _POSIX_TIMERS
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307 return 1;
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308 #else
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309 return -1;
115
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310 #endif
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311
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312
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313 default:
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314 errno = EINVAL;
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315 return -1;
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316 }
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317 }
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318
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319 // -------------------------------------------------------------------------
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320 // EOF misc.cxx