testcases/open_posix_testsuite/conformance/interfaces/pthread_mutex_init/assertions.xml

<assertions>
  <assertion id="1" tag="ref:XSH6:33638:33640">
   The function

   int pthread_mutex_init(pthread_mutex_t *restrict mutex,
 	const pthread_mutexattr_t *restrict attr);

   pthread_mutex_t = PHTREAD_MUTEX_INITIALIZER

  initializes a mutex referenced by 'mutex' with attributes specified by
  'attr'.  If 'attr' is NULL, the default mutex attributes are used.  The
  effect shall be the same as passing the address of a default mutex attributes
  object.
  </assertion>
  <assertion id="2" tag="ref:XSH6:33640:33645">
  Upon successful initialization, the state of the mutex becomes initialized
  and unlocked.  Attempting to initialize an already intialized mutex
  results in undefined behavior.
  </assertion>
  <assertion id="3" tag="ref:XSH6:33646:33649">
  In cases where default mutex attributes are appropriate, the macro
  PTHREAD_MUTEX_INITIALIZER can be used to intiailize mutexes that are
  statically allocated.  The effect shall be equivilant to dynamic
  intialization by a call to pthread_mutex_init() with paramter 'attr'
  specified as NULL, except that no error checks are performed.
  </assertion>
  <assertion id="4" tag="ref:XSH6:33651:33651">
  Upon success, it returns a 0;
  </assertion>
  <assertion id="5" tag="ref:XSH6:33662:33671">
  It SHALL fail if:

  -[EAGAIN] The system lacked the neccessary resources (other than memory)
  to intialize another mutex.
  -[ENOMEM] Insufficient memory exists to initialize the mutex.
 -[EPERM] The caller does not have the privilage to perform the operation.

  It MAY fail if:

  -[EBUSY] The implementation has detected an attempt to reinitialize the
   object referenced by 'mutex', a previously intialized, but not yet
   destroyed, mutex.
  -[EINVAL] The value specified by 'attr' is invalid.

  It shall not return [EINTR]
  </assertion>
</assertions>