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