1 /* $NetBSD: ops_pcfs.c,v 1.1.1.2 2009/03/20 20:26:50 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997-2009 Erez Zadok 5 * Copyright (c) 1990 Jan-Simon Pendry 6 * Copyright (c) 1990 Imperial College of Science, Technology & Medicine 7 * Copyright (c) 1990 The Regents of the University of California. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to Berkeley by 11 * Jan-Simon Pendry at Imperial College, London. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgment: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * 42 * File: am-utils/amd/ops_pcfs.c 43 * 44 */ 45 46 /* 47 * PC (MS-DOS) file system 48 */ 49 50 #ifdef HAVE_CONFIG_H 51 # include <config.h> 52 #endif /* HAVE_CONFIG_H */ 53 #include <am_defs.h> 54 #include <amd.h> 55 56 /* forward definitions */ 57 static char *pcfs_match(am_opts *fo); 58 static int pcfs_mount(am_node *am, mntfs *mf); 59 static int pcfs_umount(am_node *am, mntfs *mf); 60 61 /* 62 * Ops structure 63 */ 64 am_ops pcfs_ops = 65 { 66 "pcfs", 67 pcfs_match, 68 0, /* pcfs_init */ 69 pcfs_mount, 70 pcfs_umount, 71 amfs_error_lookup_child, 72 amfs_error_mount_child, 73 amfs_error_readdir, 74 0, /* pcfs_readlink */ 75 0, /* pcfs_mounted */ 76 0, /* pcfs_umounted */ 77 amfs_generic_find_srvr, 78 0, /* pcfs_get_wchan */ 79 FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */ 80 #ifdef HAVE_FS_AUTOFS 81 AUTOFS_PCFS_FS_FLAGS, 82 #endif /* HAVE_FS_AUTOFS */ 83 }; 84 85 86 87 /* 88 * PCFS needs remote filesystem. 89 */ 90 static char * 91 pcfs_match(am_opts *fo) 92 { 93 if (!fo->opt_dev) { 94 plog(XLOG_USER, "pcfs: no source device specified"); 95 return 0; 96 } 97 dlog("PCFS: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs); 98 99 /* 100 * Determine magic cookie to put in mtab 101 */ 102 return strdup(fo->opt_dev); 103 } 104 105 106 static int 107 mount_pcfs(char *mntdir, char *fs_name, char *opts, int on_autofs) 108 { 109 pcfs_args_t pcfs_args; 110 mntent_t mnt; 111 int flags; 112 #if defined(HAVE_PCFS_ARGS_T_MASK) || defined(HAVE_PCFS_ARGS_T_DIRMASK) 113 int mask; 114 #endif /* defined(HAVE_PCFS_ARGS_T_MASK) || defined(HAVE_PCFS_ARGS_T_DIRMASK) */ 115 #if defined(HAVE_PCFS_ARGS_T_UID) || defined(HAVE_PCFS_ARGS_T_UID) 116 char *str; 117 #endif /* defined(HAVE_PCFS_ARGS_T_UID) || defined(HAVE_PCFS_ARGS_T_UID) */ 118 119 /* 120 * Figure out the name of the file system type. 121 */ 122 MTYPE_TYPE type = MOUNT_TYPE_PCFS; 123 124 memset((voidp) &pcfs_args, 0, sizeof(pcfs_args)); /* Paranoid */ 125 126 /* 127 * Fill in the mount structure 128 */ 129 memset((voidp) &mnt, 0, sizeof(mnt)); 130 mnt.mnt_dir = mntdir; 131 mnt.mnt_fsname = fs_name; 132 mnt.mnt_type = MNTTAB_TYPE_PCFS; 133 mnt.mnt_opts = opts; 134 135 flags = compute_mount_flags(&mnt); 136 #ifdef HAVE_FS_AUTOFS 137 if (on_autofs) 138 flags |= autofs_compute_mount_flags(&mnt); 139 #endif /* HAVE_FS_AUTOFS */ 140 if (amuDebug(D_TRACE)) 141 plog(XLOG_DEBUG, "mount_pcfs: flags=0x%x", (u_int) flags); 142 143 #ifdef HAVE_PCFS_ARGS_T_FSPEC 144 pcfs_args.fspec = fs_name; 145 #endif /* HAVE_PCFS_ARGS_T_FSPEC */ 146 147 #ifdef HAVE_PCFS_ARGS_T_MASK 148 pcfs_args.mask = 0777; /* this may be the msdos file modes */ 149 if ((mask = hasmntval(&mnt, MNTTAB_OPT_MASK)) > 0) 150 pcfs_args.mask = mask; 151 if (amuDebug(D_TRACE)) 152 plog(XLOG_DEBUG, "mount_pcfs: mask=%o (octal)", (u_int) pcfs_args.mask); 153 #endif /* HAVE_PCFS_ARGS_T_MASK */ 154 155 #ifdef HAVE_PCFS_ARGS_T_DIRMASK 156 pcfs_args.dirmask = 0777; /* this may be the msdos dir modes */ 157 if ((mask = hasmntval(&mnt, MNTTAB_OPT_DIRMASK)) > 0) 158 pcfs_args.dirmask = mask; 159 if (amuDebug(D_TRACE)) 160 plog(XLOG_DEBUG, "mount_pcfs: dirmask=%o (octal)", (u_int) pcfs_args.dirmask); 161 #endif /* HAVE_PCFS_ARGS_T_DIRMASK */ 162 163 #ifdef HAVE_PCFS_ARGS_T_UID 164 pcfs_args.uid = 0; /* default to root */ 165 if ((str = hasmntstr(&mnt, MNTTAB_OPT_USER)) != NULL) { 166 struct passwd *pw; 167 if ((pw = getpwnam(str)) != NULL) 168 pcfs_args.uid = pw->pw_uid; 169 else /* maybe used passed a UID number, not user name */ 170 pcfs_args.uid = atoi(str); /* atoi returns '0' if it failed */ 171 XFREE(str); 172 } 173 if (amuDebug(D_TRACE)) 174 plog(XLOG_DEBUG, "mount_pcfs: uid=%d", (int) pcfs_args.uid); 175 #endif /* HAVE_PCFS_ARGS_T_UID */ 176 177 #ifdef HAVE_PCFS_ARGS_T_GID 178 pcfs_args.gid = 0; /* default to wheel/root group */ 179 if ((str = hasmntstr(&mnt, MNTTAB_OPT_GROUP)) != NULL) { 180 struct group *gr; 181 if ((gr = getgrnam(str)) != NULL) 182 pcfs_args.gid = gr->gr_gid; 183 else /* maybe used passed a GID number, not group name */ 184 pcfs_args.gid = atoi(str); /* atoi returns '0' if it failed */ 185 XFREE(str); 186 } 187 if (amuDebug(D_TRACE)) 188 plog(XLOG_DEBUG, "mount_pcfs: gid=%d", (int) pcfs_args.gid); 189 #endif /* HAVE_PCFS_ARGS_T_GID */ 190 191 #ifdef HAVE_PCFS_ARGS_T_SECONDSWEST 192 pcfs_args.secondswest = 0; /* XXX: fill in correct values */ 193 #endif /* HAVE_PCFS_ARGS_T_SECONDSWEST */ 194 #ifdef HAVE_PCFS_ARGS_T_DSTTIME 195 pcfs_args.dsttime = 0; /* XXX: fill in correct values */ 196 #endif /* HAVE_PCFS_ARGS_T_DSTTIME */ 197 198 /* 199 * Call generic mount routine 200 */ 201 return mount_fs(&mnt, flags, (caddr_t) & pcfs_args, 0, type, 0, NULL, mnttab_file_name, on_autofs); 202 } 203 204 205 static int 206 pcfs_mount(am_node *am, mntfs *mf) 207 { 208 int on_autofs = mf->mf_flags & MFF_ON_AUTOFS; 209 int error; 210 211 error = mount_pcfs(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs); 212 if (error) { 213 errno = error; 214 plog(XLOG_ERROR, "mount_pcfs: %m"); 215 return error; 216 } 217 218 return 0; 219 } 220 221 222 static int 223 pcfs_umount(am_node *am, mntfs *mf) 224 { 225 int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0; 226 227 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags); 228 } 229