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badsend.c
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Editing: badsend.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 */ /* * 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 (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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