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#define CONFIGURE_INIT
#include "system.h"
#include <sched.h>
#include <fcntl.h>
#include <time.h>
#include <tmacros.h>

void *POSIX_Init(
  void *argument
)
{
  int             status;
  int             value;
  int             i;
  sem_t           sems[CONFIGURE_MAXIMUM_POSIX_SEMAPHORES];
  sem_t           sem2;
  sem_t           *n_sem1;
  sem_t           *n_sem2;
  struct timespec waittime;
  char            failure_msg[80];

  puts( "\n\n*** POSIX SEMAPHORE MANAGER TEST 1 ***" );

  puts( "Init: sem_init - SUCCESSFUL" );
  for (i = 0; i < CONFIGURE_MAXIMUM_POSIX_SEMAPHORES; i++) {
    status = sem_init(&sems[i], 0, i);
    sprintf(failure_msg, "sem_init %d", i );
    fatal_directive_status( status, 0, failure_msg);
  }
  puts( "Init: sem_init - UNSUCCESSFUL (ENOSPC)" );
  status = sem_init(&sem2, 0, 1);
  fatal_directive_status( status, -1, "sem_init error return status");
  fatal_directive_status( errno, ENOSPC, "sem_init errorno ENOSPC" );
 
  puts( "Init: sem_init - UNSUCCESSFUL (ENOSYS -- pshared not supported)" );
  status = sem_init(&sem2, 1, 1);
  fatal_directive_status( status, -1, "sem_init error return status");
  fatal_directive_status( errno, ENOSYS, "sem_init errno set to ENOSYS");
  
  puts( "Init: sem_getvalue - SUCCESSFUL ");
  for (i = 0; i < CONFIGURE_MAXIMUM_POSIX_SEMAPHORES; i++) {
    status = sem_getvalue(&sems[i], &value);
    sprintf( failure_msg, "sem_getvalue %d", i );
    fatal_directive_status( status, 0, failure_msg );
    fatal_directive_status( value, i, "sem_getvalue correct value" );
  }
  puts( "Init: sem_getvalue - UNSUCCESSFUL ");
  status = sem_getvalue(&sem2, &value);
  fatal_directive_status( status, -1, "sem_getvalue error return status"); 
  fatal_directive_status( errno, EINVAL, "sem_getvalue errno EINVAL");

  puts( "Init: sem_destroy - SUCCESSFUL" );
  status = sem_destroy(&sems[0]);
  fatal_directive_status( status, 0, "sem_destroy semaphore 0"); 

  puts( "Init: sem_destroy - UNSUCCESSFUL (EINVAL)" );
  status = sem_destroy(&sem2);
  fatal_directive_status( status, -1, "sem_destroy error return status");
  fatal_directive_status( errno, EINVAL, "sem_destroy errno EINVAL");

  puts( "Init: sem_wait - SUCCESSFUL" );
  status = sem_wait(&sems[1]);
  fatal_directive_status( status, 0, "sem_wait semaphore 1"); 

  puts( "Init: sem_wait - UNSUCCESSFUL (EINVAL)" );
  status = sem_wait(&sem2);
  fatal_directive_status( status, -1, "sem_wait error return status");
  fatal_directive_status( errno, EINVAL, "sem_wait errno EINVAL");

  puts( "Init: sem_post - SUCCESSFUL" );
  status = sem_post(&sems[1]);
  fatal_directive_status( status, 0, "sem_post semaphore 1"); 

  puts( "Init: sem_wait - SUCCESSFUL (after a sem_post)" );
  status = sem_wait(&sems[1]);
  fatal_directive_status( status, 0, "sem_wait semaphore 1"); 

  puts( "Init: sem_trywait - SUCCESSFUL" );
  status = sem_trywait(&sems[2]);
  fatal_directive_status( status, 0, "sem_trywait semaphore 2"); 

  puts( "Init: sem_trywait - UNSUCCESSFUL (EAGAIN)" );
  status = sem_trywait(&sems[1]);
  fatal_directive_status( status, -1, "sem_trywait error return status");
  fatal_directive_status( errno, EAGAIN, "sem_trywait errno EAGAIN");

  puts( "Init: sem_trywait - UNSUCCESSFUL (EINVAL)" );
  status = sem_trywait(&sem2);
  fatal_directive_status( status, -1, "sem_trywait error return status");
  fatal_directive_status( errno, EINVAL, "sem_trywait errno EINVAL");

  puts( "Init: sem_timedwait - SUCCESSFUL" );
  waittime.tv_sec = 0;
  waittime.tv_nsec = 100;
  status = sem_timedwait(&sems[2], &waittime);
  fatal_directive_status( status, 0, "sem_timedwait semaphore 2"); 

  puts( "Init: sem_timedwait - UNSUCCESSFUL (ETIMEDOUT)" );
  status = sem_timedwait(&sems[1], &waittime);
  fatal_directive_status( status, -1, "sem_timedwait error return status");
  fatal_directive_status( errno, ETIMEDOUT, "sem_timedwait errno ETIMEDOUT");

  puts( "Init: sem_timedwait - UNSUCCESSFUL (EINVAL)" );
  status = sem_timedwait(&sem2, &waittime);
  fatal_directive_status( status, -1, "sem_timedwait error return status");
  fatal_directive_status( errno, EINVAL, "sem_init errno EINVAL");

  puts( "Init: sem_post - UNSUCCESSFUL (EINVAL)" );
  status = sem_post(&sem2);
  fatal_directive_status( status, -1, "sem_post error return status");
  fatal_directive_status( errno, EINVAL, "sem_post errno EINVAL");

  puts( "Init: sem_destroy - SUCCESSFUL" );
  for (i = 1; i < CONFIGURE_MAXIMUM_POSIX_SEMAPHORES; i++) {
    status = sem_destroy(&sems[i]);
    sprintf( failure_msg, "sem_destroy %d", i );
    fatal_directive_status( status, 0, failure_msg ); 
  }

  /* Modes are currently unsupported */

  /*
   * Validate all sem_open return paths.
   */

  puts( "Init: sem_open - sem1 SUCCESSFUL" );
  n_sem1 = sem_open( "sem1", O_CREAT, 00777, 1 );
  assert( n_sem1 != SEM_FAILED );

  puts( "Init: sem_open - Create an Existing sem (EEXIST)" );
  n_sem2 = sem_open("sem1", O_CREAT | O_EXCL, 00777, 1);
  fatal_directive_status( 
    (int) n_sem2, (int ) SEM_FAILED, "sem_open error return status" );
  fatal_directive_status( errno, EEXIST,  "sem_open errno EEXIST");

  puts( "Init: sem_open - Open new sem without create flag (ENOENT)" );
  n_sem2 = sem_open("sem3", O_EXCL, 00777, 1);
  fatal_directive_status( 
    (int) n_sem2, (int ) SEM_FAILED, "sem_open error return status" );
  fatal_directive_status( errno, ENOENT,  "sem_open errno EEXIST"); 

  /*
   * XXX - Could not hit the following errors:
   *   E_POSIX_Semaphore_Create_support only fails if
   *     ENOSYS - When semaphore is shared between processes.
   *     ENOSPC - When out of memory.
   */

  /*
   * Validate we can wait on a semaphore opened with sem_open.
   */

  puts( "Init: sem_wait on sem1" );
  status = sem_wait(n_sem1);
  fatal_directive_status( status, 0, "sem_wait opened semaphore"); 

  /*
   * Validate a second open returns the same semaphore.
   */

  puts( "Init: sem_open - Open an existing sem ( same id )" );
  n_sem2 = sem_open("sem1", 0 );
  fatal_directive_status( 
    (int) n_sem2, (int ) n_sem1, "sem_open error return status" );
  
  /*
   * Unlink the semaphore, then verify an open of the same name produces a 
   * different semaphore.
   */

  puts( "Init: sem_unlink - sem1 SUCCESSFUL" );
  status = sem_unlink( "sem1" );
  fatal_directive_status( status, 0, "sem_unlink locked semaphore"); 

  puts( "Init: sem_open - Reopen sem1 SUCCESSFUL with a different id" );
  n_sem2 = sem_open( "sem1", O_CREAT | O_EXCL, 00777, 1);
  assert( n_sem2 != SEM_FAILED );
  assert( n_sem2 != n_sem1 );

  /*
   * Validate we can call close on a semaphore opened with sem_open.
   */

  puts( "Init: sem_close (1) - SUCCESSFUL" );
  status = sem_close( n_sem1 );
  fatal_directive_status( status, 0, "sem_close semaphore"); 


  /*
   * Validate it n_sem2 (the last open for sem1 name can be
   * correctly closed and unlinked.
   */

  puts( "Init: sem_close (2) - SUCCESSFUL" );
  status = sem_close( n_sem2 );
  fatal_directive_status( status, 0, "sem_close semaphore"); 

  puts( "Init: sem_unlink - sem1 (2) SUCCESSFUL" );
  status = sem_unlink( "sem1" );
  fatal_directive_status( status, 0, "sem_unlink locked semaphore"); 

  puts( "Init: sem_close - UNSUCCESSFUL (EINVAL)" );
  status = sem_close(n_sem2);
  fatal_directive_status( status, -1, "sem_close error return status");
  fatal_directive_status( errno, EINVAL, "sem_close errno EINVAL");

  puts( "Init: sem_unlink - UNSUCCESSFUL (ENOENT)" );
  status = sem_unlink("sem1");
  fatal_directive_status( status, -1, "sem_unlink error return status");
  fatal_directive_status( errno, ENOENT, "sem_close errno EINVAL");


  /*
   * Validate we can unlink (2)
   */

  puts( "Init: sem_unlink (NULL) - EINVAL" );
  status = sem_unlink( NULL );
  fatal_directive_status( status, -1, "sem_unlink error return status");
  fatal_directive_status( errno, EINVAL, "sem_unlink errno value"); 

  puts( "Init: sem_unlink (\"\") - EINVAL" );
  status = sem_unlink( "" );
  fatal_directive_status( status, -1, "sem_unlink error return status");
  fatal_directive_status( errno, EINVAL, "sem_unlink errno value"); 

  /*
   * XXX - Cant' create location OBJECTS_ERROR or OBJECTS_REMOTE.
   *       sem_close and sem_unlink.
   */

  puts( "Init: sem_unlink - UNSUCCESSFUL (ENOENT)" );
  status = sem_unlink("sem2");
  fatal_directive_status( status, -1, "sem_unlink error return status");
  fatal_directive_status( errno, ENOENT, "sem_unlink errno ENOENT");
  assert( (status == -1) && (errno == ENOENT) );


  /* Try adding in unlinking before closing... (can we still open?) */

  puts( "*** POSIX SEMAPHORE MANAGER TEST 1 COMPLETED ***" );
  exit(0);

  return NULL; /* just so the compiler thinks we returned something */
}