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e58dee8cae
When an invalid incremental send is requested where the "to" ds is before the "from" ds, make sure to drop the reference to the pool and the dataset before returning the error. Add an assert on FreeBSD to make sure we don't hold any locks after returning from an ioctl. Add some test coverage. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ryan Moeller <ryan@iXsystems.com> Closes #10919
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Portions Copyright 2020 iXsystems, Inc.
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*/
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/*
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* Test some invalid send operations with libzfs/libzfs_core.
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*
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* Specifying the to and from snaps in the wrong order should return EXDEV.
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* We are checking that the early return doesn't accidentally leave any
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* references held, so this test is designed to trigger a panic when asserts
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* are verified with the bug present.
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*/
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#include <libzfs.h>
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#include <libzfs_core.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sysexits.h>
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#include <err.h>
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static void
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usage(const char *name)
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{
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fprintf(stderr, "usage: %s snap0 snap1\n", name);
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exit(EX_USAGE);
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}
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int
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main(int argc, char const * const argv[])
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{
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sendflags_t flags = { 0 };
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libzfs_handle_t *zhdl;
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zfs_handle_t *zhp;
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const char *fromfull, *tofull, *fsname, *fromsnap, *tosnap, *p;
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uint64_t size;
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int fd, error;
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if (argc != 3)
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usage(argv[0]);
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fromfull = argv[1];
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tofull = argv[2];
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p = strchr(fromfull, '@');
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if (p == NULL)
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usage(argv[0]);
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fromsnap = p + 1;
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p = strchr(tofull, '@');
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if (p == NULL)
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usage(argv[0]);
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tosnap = p + 1;
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fsname = strndup(tofull, p - tofull);
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if (strncmp(fsname, fromfull, p - tofull) != 0)
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usage(argv[0]);
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fd = open("/dev/null", O_WRONLY);
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if (fd == -1)
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err(EX_OSERR, "open(\"/dev/null\", O_WRONLY)");
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zhdl = libzfs_init();
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if (zhdl == NULL)
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errx(EX_OSERR, "libzfs_init(): %s", libzfs_error_init(errno));
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zhp = zfs_open(zhdl, fsname, ZFS_TYPE_FILESYSTEM);
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if (zhp == NULL)
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err(EX_OSERR, "zfs_open(\"%s\")", fsname);
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/*
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* Exercise EXDEV in dmu_send_obj. The error gets translated to
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* EZFS_CROSSTARGET in libzfs.
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*/
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error = zfs_send(zhp, tosnap, fromsnap, &flags, fd, NULL, NULL, NULL);
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if (error == 0 || libzfs_errno(zhdl) != EZFS_CROSSTARGET)
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errx(EX_OSERR, "zfs_send(\"%s\", \"%s\") should have failed "
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"with EZFS_CROSSTARGET, not %d",
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tofull, fromfull, libzfs_errno(zhdl));
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printf("zfs_send(\"%s\", \"%s\"): %s\n",
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tofull, fromfull, libzfs_error_description(zhdl));
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zfs_close(zhp);
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/*
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* Exercise EXDEV in dmu_send.
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*/
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error = lzc_send_resume_redacted(fromfull, tofull, fd, 0, 0, 0, NULL);
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if (error != EXDEV)
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errx(EX_OSERR, "lzc_send_resume_redacted(\"%s\", \"%s\")"
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" should have failed with EXDEV, not %d",
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fromfull, tofull, error);
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printf("lzc_send_resume_redacted(\"%s\", \"%s\"): %s\n",
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fromfull, tofull, strerror(error));
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/*
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* Exercise EXDEV in dmu_send_estimate_fast.
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*/
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error = lzc_send_space_resume_redacted(fromfull, tofull, 0, 0, 0, 0,
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NULL, fd, &size);
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if (error != EXDEV)
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errx(EX_OSERR, "lzc_send_space_resume_redacted(\"%s\", \"%s\")"
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" should have failed with EXDEV, not %d",
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fromfull, tofull, error);
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printf("lzc_send_space_resume_redacted(\"%s\", \"%s\"): %s\n",
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fromfull, tofull, strerror(error));
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close(fd);
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libzfs_fini(zhdl);
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free((void *)fsname);
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return (EXIT_SUCCESS);
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}
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