xref: /freebsd/sys/contrib/openzfs/cmd/zfs_ids_to_path.c (revision bdd1243df58e60e85101c09001d9812a789b6bc4)
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 https://opensource.org/licenses/CDDL-1.0.
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 }
97