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Add support to decode a resume token
Adding a new subcommand to zstream called token. This now allows users to decode a resume token to retrieve the toname field. This can be useful for tools that need this information. The syntax works as follows zstream token <resume_token>. Reviewed-by: Matt Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Reviewed-by: Paul Zuchowski <[email protected]> Signed-off-by: Tony Perkins <[email protected]> Closes openzfs#10558
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/* | ||
* 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 | ||
*/ | ||
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/* | ||
* Copyright 2010 Sun Microsystems, Inc. All rights reserved. | ||
* Use is subject to license terms. | ||
* | ||
* Portions Copyright 2012 Martin Matuska <[email protected]> | ||
*/ | ||
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/* | ||
* Copyright (c) 2020 by Datto Inc. All rights reserved. | ||
*/ | ||
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#include <ctype.h> | ||
#include <libnvpair.h> | ||
#include <stdio.h> | ||
#include <stdlib.h> | ||
#include <strings.h> | ||
#include <unistd.h> | ||
#include <stddef.h> | ||
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#include <libzfs.h> | ||
#include <libzfs_core.h> | ||
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#include <sys/dmu.h> | ||
#include <sys/zfs_ioctl.h> | ||
#include "zstream.h" | ||
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int | ||
zstream_do_token(int argc, char *argv[]) | ||
{ | ||
char *resume_token = NULL; | ||
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if (argc < 2) { | ||
(void) fprintf(stderr, "Need to pass the resume token\n"); | ||
zstream_usage(); | ||
} | ||
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resume_token = argv[1]; | ||
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libzfs_handle_t *hdl = libzfs_init(); | ||
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nvlist_t *resume_nvl = | ||
zfs_send_resume_token_to_nvlist(hdl, resume_token); | ||
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if (resume_nvl == NULL) { | ||
(void) fprintf(stderr, | ||
"Unable to parse resume token: %s\n", | ||
libzfs_error_description(hdl)); | ||
libzfs_fini(hdl); | ||
return (1); | ||
} | ||
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dump_nvlist(resume_nvl, 5); | ||
nvlist_free(resume_nvl); | ||
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libzfs_fini(hdl); | ||
return (0); | ||
} |
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