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// SPDX-License-Identifier: CDDL-1.0
/*
* 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 https://opensource.org/licenses/CDDL-1.0.
* 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
*/
/*
* Portions Copyright 2020 iXsystems, Inc.
*/
/*
* Test some invalid send operations with libzfs/libzfs_core.
*
* Specifying the to and from snaps in the wrong order should return EXDEV.
* We are checking that the early return doesn't accidentally leave any
* references held, so this test is designed to trigger a panic when asserts
* are verified with the bug present.
*/
#include <libzfs.h>
#include <libzfs_core.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sysexits.h>
#include <err.h>
static void
usage(const char *name)
{
fprintf(stderr, "usage: %s snap0 snap1\n", name);
exit(EX_USAGE);
}
int
main(int argc, char const * const argv[])
{
sendflags_t flags = { 0 };
libzfs_handle_t *zhdl;
zfs_handle_t *zhp;
const char *fromfull, *tofull, *fsname, *fromsnap, *tosnap, *p;
uint64_t size;
int fd, error;
if (argc != 3)
usage(argv[0]);
fromfull = argv[1];
tofull = argv[2];
p = strchr(fromfull, '@');
if (p == NULL)
usage(argv[0]);
fromsnap = p + 1;
p = strchr(tofull, '@');
if (p == NULL)
usage(argv[0]);
tosnap = p + 1;
fsname = strndup(tofull, p - tofull);
if (fsname == NULL) {
perror("strndup");
exit(EXIT_FAILURE);
}
if (strncmp(fsname, fromfull, p - tofull) != 0)
usage(argv[0]);
fd = open("/dev/null", O_WRONLY);
if (fd == -1)
err(EX_OSERR, "open(\"/dev/null\", O_WRONLY)");
zhdl = libzfs_init();
if (zhdl == NULL)
errx(EX_OSERR, "libzfs_init(): %s", libzfs_error_init(errno));
zhp = zfs_open(zhdl, fsname, ZFS_TYPE_FILESYSTEM);
if (zhp == NULL)
err(EX_OSERR, "zfs_open(\"%s\")", fsname);
/*
* Exercise EXDEV in dmu_send_obj. The error gets translated to
* EZFS_CROSSTARGET in libzfs.
*/
error = zfs_send(zhp, tosnap, fromsnap, &flags, fd, NULL, NULL, NULL);
if (error == 0 || libzfs_errno(zhdl) != EZFS_CROSSTARGET)
errx(EX_OSERR, "zfs_send(\"%s\", \"%s\") should have failed "
"with EZFS_CROSSTARGET, not %d",
tofull, fromfull, libzfs_errno(zhdl));
printf("zfs_send(\"%s\", \"%s\"): %s\n",
tofull, fromfull, libzfs_error_description(zhdl));
zfs_close(zhp);
/*
* Exercise EXDEV in dmu_send.
*/
error = lzc_send_resume_redacted(fromfull, tofull, fd, 0, 0, 0, NULL);
if (error != EXDEV)
errx(EX_OSERR, "lzc_send_resume_redacted(\"%s\", \"%s\")"
" should have failed with EXDEV, not %d",
fromfull, tofull, error);
printf("lzc_send_resume_redacted(\"%s\", \"%s\"): %s\n",
fromfull, tofull, strerror(error));
/*
* Exercise EXDEV in dmu_send_estimate_fast.
*/
error = lzc_send_space_resume_redacted(fromfull, tofull, 0, 0, 0, 0,
NULL, fd, &size);
if (error != EXDEV)
errx(EX_OSERR, "lzc_send_space_resume_redacted(\"%s\", \"%s\")"
" should have failed with EXDEV, not %d",
fromfull, tofull, error);
printf("lzc_send_space_resume_redacted(\"%s\", \"%s\"): %s\n",
fromfull, tofull, strerror(error));
close(fd);
libzfs_fini(zhdl);
free((void *)fsname);
return (EXIT_SUCCESS);
}
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