1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Portions Copyright 2020 iXsystems, Inc. 25 */ 26 27 /* 28 * Test some invalid send operations with libzfs/libzfs_core. 29 * 30 * Specifying the to and from snaps in the wrong order should return EXDEV. 31 * We are checking that the early return doesn't accidentally leave any 32 * references held, so this test is designed to trigger a panic when asserts 33 * are verified with the bug present. 34 */ 35 36 #include <libzfs.h> 37 #include <libzfs_core.h> 38 39 #include <fcntl.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 #include <sysexits.h> 44 #include <err.h> 45 46 static void 47 usage(const char *name) 48 { 49 fprintf(stderr, "usage: %s snap0 snap1\n", name); 50 exit(EX_USAGE); 51 } 52 53 int 54 main(int argc, char const * const argv[]) 55 { 56 sendflags_t flags = { 0 }; 57 libzfs_handle_t *zhdl; 58 zfs_handle_t *zhp; 59 const char *fromfull, *tofull, *fsname, *fromsnap, *tosnap, *p; 60 uint64_t size; 61 int fd, error; 62 63 if (argc != 3) 64 usage(argv[0]); 65 66 fromfull = argv[1]; 67 tofull = argv[2]; 68 69 p = strchr(fromfull, '@'); 70 if (p == NULL) 71 usage(argv[0]); 72 fromsnap = p + 1; 73 74 p = strchr(tofull, '@'); 75 if (p == NULL) 76 usage(argv[0]); 77 tosnap = p + 1; 78 79 fsname = strndup(tofull, p - tofull); 80 if (fsname == NULL) { 81 perror("strndup"); 82 exit(EXIT_FAILURE); 83 } 84 if (strncmp(fsname, fromfull, p - tofull) != 0) 85 usage(argv[0]); 86 87 fd = open("/dev/null", O_WRONLY); 88 if (fd == -1) 89 err(EX_OSERR, "open(\"/dev/null\", O_WRONLY)"); 90 91 zhdl = libzfs_init(); 92 if (zhdl == NULL) 93 errx(EX_OSERR, "libzfs_init(): %s", libzfs_error_init(errno)); 94 95 zhp = zfs_open(zhdl, fsname, ZFS_TYPE_FILESYSTEM); 96 if (zhp == NULL) 97 err(EX_OSERR, "zfs_open(\"%s\")", fsname); 98 99 /* 100 * Exercise EXDEV in dmu_send_obj. The error gets translated to 101 * EZFS_CROSSTARGET in libzfs. 102 */ 103 error = zfs_send(zhp, tosnap, fromsnap, &flags, fd, NULL, NULL, NULL); 104 if (error == 0 || libzfs_errno(zhdl) != EZFS_CROSSTARGET) 105 errx(EX_OSERR, "zfs_send(\"%s\", \"%s\") should have failed " 106 "with EZFS_CROSSTARGET, not %d", 107 tofull, fromfull, libzfs_errno(zhdl)); 108 printf("zfs_send(\"%s\", \"%s\"): %s\n", 109 tofull, fromfull, libzfs_error_description(zhdl)); 110 111 zfs_close(zhp); 112 113 /* 114 * Exercise EXDEV in dmu_send. 115 */ 116 error = lzc_send_resume_redacted(fromfull, tofull, fd, 0, 0, 0, NULL); 117 if (error != EXDEV) 118 errx(EX_OSERR, "lzc_send_resume_redacted(\"%s\", \"%s\")" 119 " should have failed with EXDEV, not %d", 120 fromfull, tofull, error); 121 printf("lzc_send_resume_redacted(\"%s\", \"%s\"): %s\n", 122 fromfull, tofull, strerror(error)); 123 124 /* 125 * Exercise EXDEV in dmu_send_estimate_fast. 126 */ 127 error = lzc_send_space_resume_redacted(fromfull, tofull, 0, 0, 0, 0, 128 NULL, fd, &size); 129 if (error != EXDEV) 130 errx(EX_OSERR, "lzc_send_space_resume_redacted(\"%s\", \"%s\")" 131 " should have failed with EXDEV, not %d", 132 fromfull, tofull, error); 133 printf("lzc_send_space_resume_redacted(\"%s\", \"%s\"): %s\n", 134 fromfull, tofull, strerror(error)); 135 136 close(fd); 137 libzfs_fini(zhdl); 138 free((void *)fsname); 139 140 return (EXIT_SUCCESS); 141 } 142