cmd/zfs_ids_to_path/zfs_ids_to_path.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2019 by Delphix. All rights reserved.
  23  */
  24 #include <libintl.h>
  25 #include <unistd.h>
  26 #include <sys/types.h>
  27 #include <stdint.h>
  28 #include <libzfs.h>
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32
  33 libzfs_handle_t *g_zfs;
  34
  35 static void
  36 usage(int err)
  37 {
  38         fprintf(stderr, "Usage: zfs_ids_to_path [-v] <pool> <objset id> "
  39             "<object id>\n");
  40         exit(err);
  41 }
  42
  43 int
  44 main(int argc, char **argv)
  45 {
  46         boolean_t verbose = B_FALSE;
  47         int c;
  48         while ((c = getopt(argc, argv, "v")) != -1) {
  49                 switch (c) {
  50                 case 'v':
  51                         verbose = B_TRUE;
  52                         break;
  53                 }
  54         }
  55         argc -= optind;
  56         argv += optind;
  57
  58         if (argc != 3) {
  59                 (void) fprintf(stderr, "Incorrect number of arguments: %d\n",
  60                     argc);
  61                 usage(1);
  62         }
  63
  64         uint64_t objset, object;
  65         if (sscanf(argv[1], "%llu", (u_longlong_t *)&objset) != 1) {
  66                 (void) fprintf(stderr, "Invalid objset id: %s\n", argv[1]);
  67                 usage(2);
  68         }
  69         if (sscanf(argv[2], "%llu", (u_longlong_t *)&object) != 1) {
  70                 (void) fprintf(stderr, "Invalid object id: %s\n", argv[2]);
  71                 usage(3);
  72         }
  73         if ((g_zfs = libzfs_init()) == NULL) {
  74                 (void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
  75                 return (4);
  76         }
  77         zpool_handle_t *pool = zpool_open(g_zfs, argv[0]);
  78         if (pool == NULL) {
  79                 fprintf(stderr, "Could not open pool %s\n", argv[0]);
  80                 libzfs_fini(g_zfs);
  81                 return (5);
  82         }
  83
  84         char pathname[PATH_MAX * 2];
  85         if (verbose) {
  86                 zpool_obj_to_path_ds(pool, objset, object, pathname,
  87                     sizeof (pathname));
  88         } else {
  89                 zpool_obj_to_path(pool, objset, object, pathname,
  90                     sizeof (pathname));
  91         }
  92         printf("%s\n", pathname);
  93         zpool_close(pool);
  94         libzfs_fini(g_zfs);
  95         return (0);
  96 }