freebsd-nq/cmd/zfs_ids_to_path/zfs_ids_to_path.c
Paul Dagnelie de4f06c275
Small program that converts a dataset id and an object id to a path
Small program that converts a dataset id and an object id to a path

Reviewed-by: Prakash Surya <prakash.surya@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Paul Dagnelie <pcd@delphix.com>
Closes #10204
2020-05-20 10:05:33 -07:00

97 lines
2.4 KiB
C

/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2019 by Delphix. All rights reserved.
*/
#include <libintl.h>
#include <unistd.h>
#include <sys/types.h>
#include <stdint.h>
#include <libzfs.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
libzfs_handle_t *g_zfs;
void
usage(int err)
{
fprintf(stderr, "Usage: [-v] zfs_ids_to_path <pool> <objset id> "
"<object id>\n");
exit(err);
}
int
main(int argc, char **argv)
{
boolean_t verbose = B_FALSE;
char c;
while ((c = getopt(argc, argv, "v")) != -1) {
switch (c) {
case 'v':
verbose = B_TRUE;
break;
}
}
argc -= optind;
argv += optind;
if (argc != 3) {
(void) fprintf(stderr, "Incorrect number of arguments: %d\n",
argc);
usage(1);
}
uint64_t objset, object;
if (sscanf(argv[1], "%llu", (u_longlong_t *)&objset) != 1) {
(void) fprintf(stderr, "Invalid objset id: %s\n", argv[2]);
usage(2);
}
if (sscanf(argv[2], "%llu", (u_longlong_t *)&object) != 1) {
(void) fprintf(stderr, "Invalid object id: %s\n", argv[3]);
usage(3);
}
if ((g_zfs = libzfs_init()) == NULL) {
(void) fprintf(stderr, "%s\n", libzfs_error_init(errno));
return (4);
}
zpool_handle_t *pool = zpool_open(g_zfs, argv[0]);
if (pool == NULL) {
fprintf(stderr, "Could not open pool %s\n", argv[1]);
libzfs_fini(g_zfs);
return (5);
}
char pathname[PATH_MAX * 2];
if (verbose) {
zpool_obj_to_path_ds(pool, objset, object, pathname,
sizeof (pathname));
} else {
zpool_obj_to_path(pool, objset, object, pathname,
sizeof (pathname));
}
printf("%s\n", pathname);
zpool_close(pool);
libzfs_fini(g_zfs);
return (0);
}