text: /*
   * Copyright (c) 2014, Intel Corporation
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *
   *     * 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.
   *
   *     * Neither the name of Intel Corporation nor the names of its
   *       contributors may be used to endorse or promote products derived
   *       from this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
   * OWNER 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 LOG OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  /*
   * asset_checkin -- mark an asset as no longer checked out
   *
   * Usage:
   *	asset_checkin /path/to/pm-aware/file asset-ID
   */
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <fcntl.h>
  #include <string.h>
  #include <time.h>
  #include <libpmemblk.h>
  
  #include "asset.h"
  
  int
  main(int argc, char *argv[])
  {
  	PMEMblkpool *pbp;
  	struct asset asset;
  	int assetid;
  
  	if (argc < 3) {
  		fprintf(stderr, "usage: %s assetdb asset-ID\n", argv[0]);
  		exit(1);
  	}
  
  	const char *path = argv[1];
  	assetid = atoi(argv[2]);
  
  	/* open an array of atomically writable elements */
  	if ((pbp = pmemblk_open(path, sizeof (struct asset))) == NULL) {
  		perror(path);
  		exit(1);
  	}
  
  	/* read a required element in */
  	if (pmemblk_read(pbp, &asset, (off_t)assetid) < 0) {
  		perror("pmemblk_read");
  		exit(1);
  	}
  
  	/* check if it contains any data */
  	if ((asset.state != ASSET_FREE) &&
  		(asset.state != ASSET_CHECKED_OUT)) {
  		fprintf(stderr, "Asset ID %d not found\n", assetid);
  		exit(1);
  	}
  
  	/* change state to free, clear user name and timestamp */
  	asset.state = ASSET_FREE;
  	asset.user[0] = '\0';
  	asset.time = 0;
  
  	if (pmemblk_write(pbp, &asset, (off_t)assetid) < 0) {
  		perror("pmemblk_write");
  		exit(1);
  	}
  
  	pmemblk_close(pbp);
  }
  