1  #include <stdbool.h>
       2  #include <stdio.h>
       3  #include <unistd.h>
       4  
       5  static struct
       6  {
       7    long int _P_val;
       8    const char *name;
       9    int _SC_val;
      10    bool positive;
      11    bool posix2;
      12  } posix_options[] =
      13    {
      14  #define N_(name, pos) { _POSIX_##name, #name, _SC_##name, pos, false }
      15  #define NP(name) N_ (name, true)
      16  #define N(name) N_ (name, false)
      17  #define N2(name) { _POSIX2_##name, #name, _SC_2_##name, false, true }
      18      N (ADVISORY_INFO),
      19      N (ASYNCHRONOUS_IO),
      20      N (BARRIERS),
      21      N (CLOCK_SELECTION),
      22      N (CPUTIME),
      23      N (FSYNC),
      24      N (IPV6),
      25      NP (JOB_CONTROL),
      26      N (MAPPED_FILES),
      27      N (MEMLOCK),
      28      N (MEMLOCK_RANGE),
      29      N (MEMORY_PROTECTION),
      30      N (MESSAGE_PASSING),
      31      N (MONOTONIC_CLOCK),
      32  #ifdef _POSIX_PRIORITIZED_IO
      33      N (PRIORITIZED_IO),
      34  #endif
      35  #ifdef _POSIX_PRIORITY_SCHEDULING
      36      N (PRIORITY_SCHEDULING),
      37  #endif
      38      N (RAW_SOCKETS),
      39      N (READER_WRITER_LOCKS),
      40      N (REALTIME_SIGNALS),
      41      NP (REGEXP),
      42      NP (SAVED_IDS),
      43      N (SEMAPHORES),
      44      N (SHARED_MEMORY_OBJECTS),
      45      NP (SHELL),
      46      N (SPAWN),
      47      N (SPIN_LOCKS),
      48      N (SPORADIC_SERVER),
      49  #ifdef _POSIX_SYNCHRONIZED_IO
      50      N (SYNCHRONIZED_IO),
      51  #endif
      52      N (THREAD_ATTR_STACKADDR),
      53      N (THREAD_ATTR_STACKSIZE),
      54      N (THREAD_CPUTIME),
      55      N (THREAD_PRIO_INHERIT),
      56      N (THREAD_PRIO_PROTECT),
      57      N (THREAD_PRIORITY_SCHEDULING),
      58      N (THREAD_PROCESS_SHARED),
      59      N (THREAD_SAFE_FUNCTIONS),
      60      N (THREAD_SPORADIC_SERVER),
      61      N (THREADS),
      62      N (TIMEOUTS),
      63      N (TIMERS),
      64      N (TRACE),
      65      N (TRACE_EVENT_FILTER),
      66      N (TRACE_INHERIT),
      67      N (TRACE_LOG),
      68      N (TYPED_MEMORY_OBJECTS),
      69      N2 (C_BIND),
      70      N2 (C_DEV),
      71      N2 (CHAR_TERM)
      72    };
      73  #define nposix_options (sizeof (posix_options) / sizeof (posix_options[0]))
      74  
      75  static int
      76  do_test (void)
      77  {
      78    int result = 0;
      79  
      80    for (int i = 0; i < nposix_options; ++i)
      81      {
      82        long int scret = sysconf (posix_options[i]._SC_val);
      83  
      84        if (scret == 0)
      85  	{
      86  	  printf ("sysconf(_SC_%s%s) returned zero\n",
      87  		  posix_options[i].posix2 ? "2_" : "", posix_options[i].name);
      88  	  result = 1;
      89  	}
      90        if (posix_options[i]._P_val != 0 && posix_options[i]._P_val != scret)
      91  	{
      92  	  printf ("sysconf(_SC_%s%s) = %ld does not match _POSIX%s_%s = %ld\n",
      93  		  posix_options[i].posix2 ? "2_" : "", posix_options[i].name,
      94  		  scret,
      95  		  posix_options[i].posix2 ? "2" : "", posix_options[i].name,
      96  		  posix_options[i]._P_val);
      97  	  result = 1;
      98  	}
      99        else if (posix_options[i].positive && scret < 0)
     100  	{
     101  	  printf ("sysconf(_SC_%s%s) must be > 0\n",
     102  		  posix_options[i].posix2 ? "2_" : "", posix_options[i].name);
     103  	  result = 1;
     104  	}
     105  
     106  #define STDVER 200809L
     107        if (scret > 0 && scret != STDVER && !posix_options[i].positive)
     108  	{
     109  	  printf ("sysconf(_SC_%s%s) must be %ldL\n",
     110  		  posix_options[i].posix2 ? "2_" : "", posix_options[i].name,
     111  		  STDVER);
     112  	  result = 1;
     113  	}
     114      }
     115  
     116    return result;
     117  }
     118  
     119  #define TEST_FUNCTION do_test ()
     120  #include "../test-skeleton.c"