1 | /* |
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2 | * $Id$ |
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3 | */ |
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4 | |
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5 | #include <assert.h> |
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6 | #include <errno.h> |
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7 | #include <pthread.h> |
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8 | #include <signal.h> |
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9 | |
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10 | #include <rtems/system.h> |
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11 | #include <rtems/score/isr.h> |
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12 | #include <rtems/score/thread.h> |
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13 | #include <rtems/score/tqdata.h> |
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14 | #include <rtems/score/wkspace.h> |
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15 | #include <rtems/seterr.h> |
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16 | #include <rtems/posix/threadsup.h> |
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17 | #include <rtems/posix/psignal.h> |
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18 | #include <rtems/posix/pthread.h> |
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19 | #include <rtems/posix/time.h> |
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20 | #include <stdio.h> |
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21 | |
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22 | |
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23 | /*PAGE |
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24 | * |
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25 | * _POSIX_signals_Check_signal |
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26 | */ |
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27 | |
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28 | boolean _POSIX_signals_Check_signal( |
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29 | POSIX_API_Control *api, |
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30 | int signo, |
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31 | boolean is_global |
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32 | ) |
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33 | { |
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34 | siginfo_t siginfo_struct; |
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35 | sigset_t saved_signals_blocked; |
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36 | |
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37 | if ( ! _POSIX_signals_Clear_signals( api, signo, &siginfo_struct, |
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38 | is_global, TRUE ) ) |
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39 | return FALSE; |
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40 | |
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41 | /* |
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42 | * Since we made a union of these, only one test is necessary but this is |
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43 | * safer. |
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44 | */ |
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45 | |
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46 | assert( _POSIX_signals_Vectors[ signo ].sa_handler || |
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47 | _POSIX_signals_Vectors[ signo ].sa_sigaction ); |
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48 | |
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49 | /* |
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50 | * Just to prevent sending a signal which is currently being ignored. |
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51 | */ |
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52 | |
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53 | if ( _POSIX_signals_Vectors[ signo ].sa_handler == SIG_IGN ) |
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54 | return FALSE; |
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55 | |
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56 | /* |
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57 | * Block the signals requested in sa_mask |
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58 | */ |
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59 | |
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60 | saved_signals_blocked = api->signals_blocked; |
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61 | api->signals_blocked |= _POSIX_signals_Vectors[ signo ].sa_mask; |
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62 | |
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63 | /* Here, the signal handler function executes */ |
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64 | |
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65 | switch ( _POSIX_signals_Vectors[ signo ].sa_flags ) { |
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66 | case SA_SIGINFO: |
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67 | /* |
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68 | * |
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69 | * assert( is_global ); |
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70 | */ |
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71 | (*_POSIX_signals_Vectors[ signo ].sa_sigaction)( |
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72 | signo, |
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73 | &siginfo_struct, |
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74 | NULL /* context is undefined per 1003.1b-1993, p. 66 */ |
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75 | ); |
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76 | break; |
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77 | default: |
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78 | (*_POSIX_signals_Vectors[ signo ].sa_handler)( signo ); |
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79 | break; |
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80 | } |
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81 | |
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82 | /* |
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83 | * Restore the previous set of blocked signals |
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84 | */ |
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85 | |
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86 | api->signals_blocked = saved_signals_blocked; |
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87 | |
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88 | return TRUE; |
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89 | } |
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90 | |
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