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/param.h> 32 #include <sys/mount.h> 33 #include <sys/uio.h> 34 #include <sys/mntent.h> 35 #include <assert.h> 36 #include <stdio.h> 37 #include <stdlib.h> 38 #include <string.h> 39 #include <sys/mnttab.h> 40 #include <sys/errno.h> 41 #include <libzfs.h> 42 43 #include "../../libzfs_impl.h" 44 45 static void 46 build_iovec(struct iovec **iov, int *iovlen, const char *name, void *val, 47 size_t len) 48 { 49 int i; 50 51 if (*iovlen < 0) 52 return; 53 i = *iovlen; 54 *iov = realloc(*iov, sizeof (**iov) * (i + 2)); 55 if (*iov == NULL) { 56 *iovlen = -1; 57 return; 58 } 59 (*iov)[i].iov_base = strdup(name); 60 (*iov)[i].iov_len = strlen(name) + 1; 61 i++; 62 (*iov)[i].iov_base = val; 63 if (len == (size_t)-1) { 64 if (val != NULL) 65 len = strlen(val) + 1; 66 else 67 len = 0; 68 } 69 (*iov)[i].iov_len = (int)len; 70 *iovlen = ++i; 71 } 72 73 int 74 do_mount(zfs_handle_t *zhp, const char *mntpt, const char *opts, int flags) 75 { 76 struct iovec *iov; 77 char *optstr, *p, *tofree; 78 int iovlen, rv; 79 const char *spec = zfs_get_name(zhp); 80 81 assert(spec != NULL); 82 assert(mntpt != NULL); 83 assert(opts != NULL); 84 85 tofree = optstr = strdup(opts); 86 assert(optstr != NULL); 87 88 iov = NULL; 89 iovlen = 0; 90 if (strstr(optstr, MNTOPT_REMOUNT) != NULL) 91 build_iovec(&iov, &iovlen, "update", NULL, 0); 92 if (flags & MS_RDONLY) 93 build_iovec(&iov, &iovlen, "ro", NULL, 0); 94 build_iovec(&iov, &iovlen, "fstype", __DECONST(char *, MNTTYPE_ZFS), 95 (size_t)-1); 96 build_iovec(&iov, &iovlen, "fspath", __DECONST(char *, mntpt), 97 (size_t)-1); 98 build_iovec(&iov, &iovlen, "from", __DECONST(char *, spec), (size_t)-1); 99 while ((p = strsep(&optstr, ",/")) != NULL) 100 build_iovec(&iov, &iovlen, p, NULL, (size_t)-1); 101 rv = nmount(iov, iovlen, 0); 102 free(tofree); 103 if (rv < 0) 104 return (errno); 105 return (rv); 106 107 } 108 109 int 110 do_unmount(zfs_handle_t *zhp, const char *mntpt, int flags) 111 { 112 (void) zhp; 113 if (unmount(mntpt, flags) < 0) 114 return (errno); 115 return (0); 116 } 117 118 int 119 zfs_mount_delegation_check(void) 120 { 121 return (0); 122 } 123 124 /* Called from the tail end of zpool_disable_datasets() */ 125 void 126 zpool_disable_datasets_os(zpool_handle_t *zhp, boolean_t force) 127 { 128 (void) zhp, (void) force; 129 } 130 131 /* Called from the tail end of zfs_unmount() */ 132 void 133 zpool_disable_volume_os(const char *name) 134 { 135 (void) name; 136 } 137