text: /*-
   * Copyright (c) 2008 Peter Holm <pho@FreeBSD.org>
   * 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.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <sys/types.h>
  #include <sys/sysctl.h>
  #include <unistd.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <sys/stat.h>
  #include <sys/param.h>
  #include <err.h>
  
  #include "stress.h"
  
  static unsigned long size;
  
  
  int
  setup(int nb)
  {
  	int pct;
  	int64_t in;
  	int64_t bl;
  	int64_t reserve_in;
  	int64_t reserve_bl;
  
  	if (nb == 0) {
  		getdf(&bl, &in);
  		size = in / op->incarnations;
  
  		pct = 90;
  		if (op->hog == 0)
  			pct = random_int(1, 90);
  		size = size / 100 * pct + 1;
  
  		size = size % 10000;	/* arbitrary limit depth */
  		size = size % 200;	/* arbitrary limit depth */ /* XXX Soft Update */
  
  		/* Resource requirements: */
  		while (size > 0) {
  			reserve_in =    1 * size * op->incarnations + 1;
  			reserve_bl = 2048 * size * op->incarnations;
  //			printf("---size = %lu, reserve(%jd, %jd)\n", size, reserve_bl/1024, reserve_in);
  			if (reserve_bl <= bl && reserve_in <= in)
  				break;
  			size--;
  		}
  		if (size == 0)
  			reserve_bl = reserve_in = 0;
  
  		if (op->verbose > 1)
  			printf("mkdir(size=%lu, incarnations=%d). Free(%jdk, %jd), reserve(%jdk, %jd)\n",
  				size, op->incarnations, bl/1024, in, reserve_bl/1024, reserve_in);
  		reservedf(reserve_bl, reserve_in);
  		putval(size);
  	} else
  		size = getval();
  
  	return (0);
  }
  
  void
  cleanup(void)
  {
  }
  
  void
  mkDir(char *path, int level) {
  	char newPath[MAXPATHLEN + 1];
  
  	if (mkdir(path, 0770) == -1) {
  		warn("mkdir(%s), %s:%d", path, __FILE__, __LINE__);
  		size = level;
  	} else
  		chdir(path);
  
  	if (done_testing == 1)
  		size = level;
  
  	if (level < size) {
  		sprintf(newPath,"d%d", level+1);
  		mkDir(newPath, level+1);
  	}
  }
  
  void
  rmDir(char *path, int level) {
  	char newPath[MAXPATHLEN + 1];
  
  	if (level < size) {
  		sprintf(newPath,"d%d", level+1);
  		rmDir(newPath, level+1);
  	}
  	chdir ("..");
  	if (rmdir(path) == -1) {
  		err(1, "rmdir(%s), %s:%d", path, __FILE__, __LINE__);
  	}
  }
  
  int
  test(void)
  {
  	char path[MAXPATHLEN + 1];
  
  	umask(0);
  	sprintf(path,"p%05d.d%d", getpid(), 1);
  	mkDir(path, 1);
  	rmDir(path, 1);
  
  	return (0);
  }
  