1  /*
       2   * Check decoding of ioctl TIOC[GS]WINSZ commands.
       3   *
       4   * Copyright (c) 2022 Dmitry V. Levin <ldv@strace.io>
       5   * All rights reserved.
       6   *
       7   * SPDX-License-Identifier: GPL-2.0-or-later
       8   */
       9  
      10  #include "tests.h"
      11  #include <stdio.h>
      12  #include <sys/ioctl.h>
      13  
      14  int
      15  main(void)
      16  {
      17  	int rc;
      18  
      19  	rc = ioctl(-1, TIOCGWINSZ, 0);
      20  	printf("ioctl(-1, TIOCGWINSZ, NULL) = %s\n", sprintrc(rc));
      21  
      22  	rc = ioctl(-1, TIOCSWINSZ, 0);
      23  	printf("ioctl(-1, TIOCSWINSZ, NULL) = %s\n", sprintrc(rc));
      24  
      25  	TAIL_ALLOC_OBJECT_CONST_PTR(struct winsize, ws);
      26  	const void *const efault = ws + 1;
      27  	fill_memory(ws, sizeof(*ws));
      28  
      29  	rc = ioctl(-1, TIOCSWINSZ, efault);
      30  	printf("ioctl(-1, TIOCSWINSZ, %p) = %s\n", efault, sprintrc(rc));
      31  
      32  	rc = ioctl(-1, TIOCGWINSZ, ws);
      33  	printf("ioctl(-1, TIOCGWINSZ, %p) = %s\n", ws, sprintrc(rc));
      34  
      35  	rc = ioctl(-1, TIOCSWINSZ, ws);
      36  	printf("ioctl(-1, TIOCSWINSZ, {ws_row=%u, ws_col=%u"
      37  	       ", ws_xpixel=%u, ws_ypixel=%u}) = %s\n",
      38  	       ws->ws_row, ws->ws_col, ws->ws_xpixel, ws->ws_ypixel,
      39  	       sprintrc(rc));
      40  
      41  	puts("+++ exited with 0 +++");
      42  	return 0;
      43  }