1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Extracts a Node from a Chain |
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5 | * |
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6 | * @ingroup Score |
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7 | */ |
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8 | |
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9 | /* |
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10 | * COPYRIGHT (c) 1989-2008. |
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11 | * On-Line Applications Research Corporation (OAR). |
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12 | * |
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13 | * The license and distribution terms for this file may be |
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14 | * found in the file LICENSE in this distribution or at |
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15 | * http://www.rtems.com/license/LICENSE. |
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16 | */ |
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17 | |
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18 | #ifdef HAVE_CONFIG_H |
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19 | #include "config.h" |
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20 | #endif |
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21 | |
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22 | #include <rtems/system.h> |
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23 | #include <rtems/score/object.h> |
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24 | #include <rtems/score/thread.h> |
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25 | #include <stdlib.h> |
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26 | #include <ctype.h> |
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27 | #include <inttypes.h> |
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28 | |
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29 | /* |
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30 | * This method objects the name of an object and returns its name |
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31 | * in the form of a C string. It attempts to be careful about |
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32 | * overflowing the user's string and about returning unprintable characters. |
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33 | */ |
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34 | |
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35 | char *_Objects_Get_name_as_string( |
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36 | Objects_Id id, |
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37 | size_t length, |
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38 | char *name |
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39 | ) |
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40 | { |
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41 | Objects_Information *information; |
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42 | const char *s; |
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43 | char *d; |
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44 | uint32_t i; |
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45 | char lname[5]; |
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46 | Objects_Control *the_object; |
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47 | Objects_Locations location; |
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48 | Objects_Id tmpId; |
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49 | |
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50 | if ( length == 0 ) |
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51 | return NULL; |
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52 | |
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53 | if ( name == NULL ) |
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54 | return NULL; |
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55 | |
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56 | tmpId = (id == OBJECTS_ID_OF_SELF) ? _Thread_Executing->Object.id : id; |
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57 | |
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58 | information = _Objects_Get_information_id( tmpId ); |
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59 | if ( !information ) |
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60 | return NULL; |
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61 | |
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62 | the_object = _Objects_Get( information, tmpId, &location ); |
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63 | switch ( location ) { |
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64 | |
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65 | #if defined(RTEMS_MULTIPROCESSING) |
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66 | case OBJECTS_REMOTE: |
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67 | /* not supported */ |
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68 | #endif |
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69 | case OBJECTS_ERROR: |
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70 | return NULL; |
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71 | |
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72 | case OBJECTS_LOCAL: |
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73 | |
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74 | #if defined(RTEMS_SCORE_OBJECT_ENABLE_STRING_NAMES) |
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75 | if ( information->is_string ) { |
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76 | s = the_object->name.name_p; |
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77 | } else |
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78 | #endif |
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79 | { |
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80 | uint32_t u32_name = (uint32_t) the_object->name.name_u32; |
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81 | |
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82 | lname[ 0 ] = (u32_name >> 24) & 0xff; |
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83 | lname[ 1 ] = (u32_name >> 16) & 0xff; |
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84 | lname[ 2 ] = (u32_name >> 8) & 0xff; |
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85 | lname[ 3 ] = (u32_name >> 0) & 0xff; |
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86 | lname[ 4 ] = '\0'; |
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87 | s = lname; |
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88 | } |
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89 | |
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90 | d = name; |
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91 | if ( s ) { |
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92 | for ( i=0 ; i<(length-1) && *s ; i++, s++, d++ ) { |
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93 | *d = (isprint((unsigned char)*s)) ? *s : '*'; |
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94 | } |
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95 | } |
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96 | *d = '\0'; |
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97 | |
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98 | _Objects_Put( the_object ); |
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99 | return name; |
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100 | } |
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101 | return NULL; /* unreachable path */ |
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102 | } |
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