text: /*
   * Check decoding of ioprio_get and ioprio_set syscalls.
   *
   * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. The name of the author may not be used to endorse or promote products
   *    derived from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include "tests.h"
  
  #include <asm/unistd.h>
  
  #if defined(__NR_ioprio_get) && defined(__NR_ioprio_set)
  
  # include <stdio.h>
  # include <unistd.h>
  
  enum {
  	IOPRIO_CLASS_NONE,
  	IOPRIO_CLASS_RT,
  	IOPRIO_CLASS_BE,
  	IOPRIO_CLASS_IDLE
  };
  
  # include "xlat.h"
  # include "xlat/ioprio_class.h"
  
  void
  print_ioprio(unsigned long val)
  {
  	printf(" (IOPRIO_PRIO_VALUE(");
  	printxval(ioprio_class, val >> 13, "IOPRIO_CLASS_???");
  	printf(", %d))", (int) (val & 0x1fff));
  }
  
  int
  main(void)
  {
  	static const kernel_ulong_t bogus_which =
  		(kernel_ulong_t) 0xdeadfacefa57beefULL;
  	static const kernel_ulong_t bogus_who =
  		(kernel_ulong_t) 0xbadc0dedda7a1057ULL;
  	static const kernel_ulong_t bogus_ioprio =
  		(kernel_ulong_t) 0xdec0ded1facefeedULL;
  	static const char * const bogus_ioprio_str =
  		"IOPRIO_PRIO_VALUE(0x7d677 /* IOPRIO_CLASS_??? */, 7917)";
  
  	long rc;
  
  	rc = syscall(__NR_ioprio_get, bogus_which, bogus_who);
  	printf("ioprio_get(%#x /* IOPRIO_WHO_??? */, %d) = %s\n",
  	       (int) bogus_which, (int) bogus_who, sprintrc(rc));
  
  	rc = syscall(__NR_ioprio_get, 1, 0);
  	printf("ioprio_get(IOPRIO_WHO_PROCESS, 0) = %s", sprintrc(rc));
  
  	if (rc >= -1)
  		print_ioprio(rc);
  
  	puts("");
  
  	rc = syscall(__NR_ioprio_set, 2, 0, 8191);
  	printf("ioprio_set(IOPRIO_WHO_PGRP, 0, "
  	       "IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, 8191)) = %s\n",
  	       sprintrc(rc));
  
  	rc = syscall(__NR_ioprio_set, bogus_which, bogus_who, bogus_ioprio);
  	printf("ioprio_set(%#x /* IOPRIO_WHO_??? */, %d, %s) = %s\n",
  	       (int) bogus_which, (int) bogus_who, bogus_ioprio_str,
  	       sprintrc(rc));
  
  	puts("+++ exited with 0 +++");
  
  	return 0;
  }
  
  #else
  
  SKIP_MAIN_UNDEFINED("__NR_ioprio_get && __NR_ioprio_set");
  
  #endif
  