1 | /* SPDX-License-Identifier: BSD-2-Clause */ |
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2 | |
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3 | /** |
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4 | * @file |
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5 | * |
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6 | * @ingroup RTEMSScoreObject |
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7 | * |
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8 | * @brief This source file contains the implementation of |
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9 | * _Objects_Name_to_string() and _Objects_Get_name_as_string(). |
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10 | */ |
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11 | |
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12 | /* |
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13 | * COPYRIGHT (c) 1989-2008. |
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14 | * On-Line Applications Research Corporation (OAR). |
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15 | * |
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16 | * Redistribution and use in source and binary forms, with or without |
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17 | * modification, are permitted provided that the following conditions |
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18 | * are met: |
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19 | * 1. Redistributions of source code must retain the above copyright |
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20 | * notice, this list of conditions and the following disclaimer. |
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21 | * 2. Redistributions in binary form must reproduce the above copyright |
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22 | * notice, this list of conditions and the following disclaimer in the |
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23 | * documentation and/or other materials provided with the distribution. |
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24 | * |
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25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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26 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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29 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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35 | * POSSIBILITY OF SUCH DAMAGE. |
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36 | */ |
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37 | |
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38 | #ifdef HAVE_CONFIG_H |
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39 | #include "config.h" |
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40 | #endif |
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41 | |
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42 | #include <rtems/score/threadimpl.h> |
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43 | |
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44 | /* |
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45 | * Do not use isprint() from <ctypes.h> since this depends on the heavy weight |
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46 | * C locale support of Newlib. |
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47 | */ |
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48 | static bool _Objects_Name_char_is_printable( char c ) |
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49 | { |
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50 | unsigned char uc; |
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51 | |
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52 | uc = (unsigned char) c; |
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53 | return uc >= ' ' && uc <= '~'; |
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54 | } |
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55 | |
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56 | size_t _Objects_Name_to_string( |
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57 | Objects_Name name, |
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58 | bool is_string, |
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59 | char *buffer, |
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60 | size_t buffer_size |
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61 | ) |
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62 | { |
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63 | char lname[ 5 ]; |
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64 | const char *s; |
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65 | char *d; |
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66 | size_t i; |
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67 | |
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68 | if ( is_string ) { |
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69 | s = name.name_p; |
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70 | } else { |
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71 | lname[ 0 ] = (name.name_u32 >> 24) & 0xff; |
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72 | lname[ 1 ] = (name.name_u32 >> 16) & 0xff; |
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73 | lname[ 2 ] = (name.name_u32 >> 8) & 0xff; |
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74 | lname[ 3 ] = (name.name_u32 >> 0) & 0xff; |
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75 | lname[ 4 ] = '\0'; |
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76 | s = lname; |
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77 | } |
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78 | |
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79 | d = buffer; |
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80 | i = 1; |
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81 | |
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82 | if ( s != NULL ) { |
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83 | while ( *s != '\0' ) { |
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84 | if ( i < buffer_size ) { |
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85 | *d = _Objects_Name_char_is_printable(*s) ? *s : '*'; |
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86 | ++d; |
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87 | } |
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88 | |
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89 | ++s; |
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90 | ++i; |
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91 | } |
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92 | } |
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93 | |
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94 | if ( buffer_size > 0 ) { |
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95 | *d = '\0'; |
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96 | } |
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97 | |
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98 | return i - 1; |
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99 | } |
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100 | |
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101 | /* |
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102 | * This method objects the name of an object and returns its name |
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103 | * in the form of a C string. It attempts to be careful about |
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104 | * overflowing the user's string and about returning unprintable characters. |
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105 | */ |
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106 | |
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107 | char *_Objects_Get_name_as_string( |
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108 | Objects_Id id, |
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109 | size_t length, |
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110 | char *name |
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111 | ) |
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112 | { |
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113 | const Objects_Information *information; |
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114 | const Objects_Control *the_object; |
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115 | ISR_lock_Context lock_context; |
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116 | Objects_Id tmpId; |
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117 | |
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118 | if ( length == 0 ) |
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119 | return NULL; |
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120 | |
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121 | if ( name == NULL ) |
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122 | return NULL; |
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123 | |
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124 | tmpId = (id == OBJECTS_ID_OF_SELF) ? _Thread_Get_executing()->Object.id : id; |
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125 | |
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126 | information = _Objects_Get_information_id( tmpId ); |
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127 | if ( !information ) |
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128 | return NULL; |
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129 | |
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130 | the_object = _Objects_Get( tmpId, &lock_context, information ); |
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131 | if ( the_object == NULL ) { |
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132 | return NULL; |
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133 | } |
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134 | |
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135 | _Objects_Name_to_string( |
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136 | the_object->name, |
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137 | _Objects_Has_string_name( information ), |
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138 | name, |
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139 | length |
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140 | ); |
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141 | |
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142 | _ISR_lock_ISR_enable( &lock_context ); |
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143 | return name; |
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144 | } |
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