1 /* 2 * Copyright (c) 2006 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* 28 * This file implements Solaris compatible zmount() function. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 #include <sys/mount.h> 36 #include <sys/uio.h> 37 #include <sys/mntent.h> 38 #include <assert.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <sys/mnttab.h> 43 #include <sys/errno.h> 44 #include <libzfs.h> 45 46 #include "../../libzfs_impl.h" 47 48 static void 49 build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, 50 size_t len) 51 { 52 int i; 53 54 if (*iovlen < 0) 55 return; 56 i = *iovlen; 57 *iov = realloc(*iov, sizeof (**iov) * (i + 2)); 58 if (*iov == NULL) { 59 *iovlen = -1; 60 return; 61 } 62 (*iov)[i].iov_base = strdup(name); 63 (*iov)[i].iov_len = strlen(name) + 1; 64 i++; 65 (*iov)[i].iov_base = val; 66 if (len == (size_t)-1) { 67 if (val != NULL) 68 len = strlen(val) + 1; 69 else 70 len = 0; 71 } 72 (*iov)[i].iov_len = (int)len; 73 *iovlen = ++i; 74 } 75 76 int 77 do_mount(zfs_handle_t *zhp, const char *mntpt, const char *opts, int flags) 78 { 79 struct iovec *iov; 80 char *optstr, *p, *tofree; 81 int iovlen, rv; 82 const char *spec = zfs_get_name(zhp); 83 84 assert(spec != NULL); 85 assert(mntpt != NULL); 86 assert(opts != NULL); 87 88 tofree = optstr = strdup(opts); 89 assert(optstr != NULL); 90 91 iov = NULL; 92 iovlen = 0; 93 if (strstr(optstr, MNTOPT_REMOUNT) != NULL) 94 build_iovec(&iov, &iovlen, "update", NULL, 0); 95 if (flags & MS_RDONLY) 96 build_iovec(&iov, &iovlen, "ro", NULL, 0); 97 build_iovec(&iov, &iovlen, "fstype", __DECONST(char *, MNTTYPE_ZFS), 98 (size_t)-1); 99 build_iovec(&iov, &iovlen, "fspath", __DECONST(char *, mntpt), 100 (size_t)-1); 101 build_iovec(&iov, &iovlen, "from", __DECONST(char *, spec), (size_t)-1); 102 while ((p = strsep(&optstr, ",/")) != NULL) 103 build_iovec(&iov, &iovlen, p, NULL, (size_t)-1); 104 rv = nmount(iov, iovlen, 0); 105 free(tofree); 106 if (rv < 0) 107 return (errno); 108 return (rv); 109 110 } 111 112 int 113 do_unmount(zfs_handle_t *zhp, const char *mntpt, int flags) 114 { 115 (void) zhp; 116 if (unmount(mntpt, flags) < 0) 117 return (errno); 118 return (0); 119 } 120 121 int 122 zfs_mount_delegation_check(void) 123 { 124 return (0); 125 } 126 127 /* Called from the tail end of zpool_disable_datasets() */ 128 void 129 zpool_disable_datasets_os(zpool_handle_t *zhp, boolean_t force) 130 { 131 (void) zhp, (void) force; 132 } 133 134 /* Called from the tail end of zfs_unmount() */ 135 void 136 zpool_disable_volume_os(const char *name) 137 { 138 (void) name; 139 } 140