1 /* $NetBSD: ops_udf.c,v 1.1.1.1 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_udf.c 43 * 44 */ 45 46 /* 47 * UDF 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 *udf_match(am_opts *fo); 58 static int udf_mount(am_node *am, mntfs *mf); 59 static int udf_umount(am_node *am, mntfs *mf); 60 61 /* 62 * Ops structure 63 */ 64 am_ops udf_ops = 65 { 66 "udf", 67 udf_match, 68 0, /* udf_init */ 69 udf_mount, 70 udf_umount, 71 amfs_error_lookup_child, 72 amfs_error_mount_child, 73 amfs_error_readdir, 74 0, /* udf_readlink */ 75 0, /* udf_mounted */ 76 0, /* udf_umounted */ 77 amfs_generic_find_srvr, 78 0, /* udf_get_wchan */ 79 FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */ 80 #ifdef HAVE_FS_AUTOFS 81 AUTOFS_UDF_FS_FLAGS, 82 #endif /* HAVE_FS_AUTOFS */ 83 }; 84 85 #if defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_NOBODY_UID) 86 static int 87 a_num(const char *s, const char *id_type) 88 { 89 int id; 90 char *ep; 91 92 id = strtol(s, &ep, 0); 93 if (*ep || s == ep || id < 0) { 94 plog(XLOG_ERROR, "mount_udf: unknown %s: %s", id_type, s); 95 return 0; 96 } 97 return id; 98 } 99 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_NOBODY_UID) */ 100 101 #if defined(HAVE_UDF_ARGS_T_NOBODY_GID) 102 static gid_t 103 a_gid(const char *s, const char *id_type) 104 { 105 struct group *gr; 106 107 if ((gr = getgrnam(s)) != NULL) 108 return gr->gr_gid; 109 return a_num(s, id_type); 110 } 111 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) */ 112 113 #if defined(HAVE_UDF_ARGS_T_NOBODY_UID) 114 static uid_t 115 a_uid(const char *s, const char *id_type) 116 { 117 struct passwd *pw; 118 119 if ((pw = getpwnam(s)) != NULL) 120 return pw->pw_uid; 121 return a_num(s, id_type); 122 } 123 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) */ 124 125 /* 126 * UDF needs remote filesystem. 127 */ 128 static char * 129 udf_match(am_opts *fo) 130 { 131 132 if (!fo->opt_dev) { 133 plog(XLOG_USER, "udf: no source device specified"); 134 return 0; 135 } 136 dlog("UDF: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs); 137 138 /* 139 * Determine magic cookie to put in mtab 140 */ 141 return strdup(fo->opt_dev); 142 } 143 144 static int 145 mount_udf(char *mntdir, char *fs_name, char *opts, int on_autofs) 146 { 147 udf_args_t udf_args; 148 mntent_t mnt; 149 int flags; 150 char *str; 151 #if defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) 152 uid_t uid_nobody; 153 gid_t gid_nobody; 154 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) */ 155 /* 156 * Figure out the name of the file system type. 157 */ 158 MTYPE_TYPE type = MOUNT_TYPE_UDF; 159 160 #if defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) 161 uid_nobody = a_uid("nobody", "user"); 162 if (uid_nobody == 0) { 163 plog(XLOG_ERROR, "mount_udf: invalid uid for nobody"); 164 return EPERM; 165 } 166 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) */ 167 168 #if defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_ANON_GID) 169 gid_nobody = a_gid("nobody", "group"); 170 if (gid_nobody == 0) { 171 plog(XLOG_ERROR, "mount_udf: invalid gid for nobody"); 172 return EPERM; 173 } 174 #endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_ANON_GID) */ 175 176 str = NULL; 177 memset((voidp) &udf_args, 0, sizeof(udf_args)); /* Paranoid */ 178 179 /* 180 * Fill in the mount structure 181 */ 182 memset((voidp)&mnt, 0, sizeof(mnt)); 183 mnt.mnt_dir = mntdir; 184 mnt.mnt_fsname = fs_name; 185 mnt.mnt_type = MNTTAB_TYPE_UDF; 186 mnt.mnt_opts = opts; 187 188 flags = compute_mount_flags(&mnt); 189 190 #ifdef HAVE_UDF_ARGS_T_UDFMFLAGS 191 # if defined(MNT2_UDF_OPT_CLOSESESSION) && defined(MNTTAB_OPT_CLOSESESSION) 192 if (amu_hasmntopt(&mnt, MNTTAB_OPT_CLOSESESSION)) 193 udf_args.udfmflags |= MNT2_UDF_OPT_CLOSESESSION; 194 # endif /* defined(MNT2_UDF_OPT_CLOSESESSION) && defined(MNTTAB_OPT_CLOSESESSION) */ 195 #endif /* HAVE_UDF_ARGS_T_UDFMFLAGS */ 196 197 #ifdef HAVE_UDF_ARGS_T_NOBODY_UID 198 udf_args.nobody_uid = uid_nobody; 199 #endif /* HAVE_UDF_ARGS_T_NOBODY_UID */ 200 201 #ifdef HAVE_UDF_ARGS_T_NOBODY_GID 202 udf_args.nobody_gid = gid_nobody; 203 #endif /* HAVE_UDF_ARGS_T_NOBODY_GID */ 204 205 #ifdef HAVE_UDF_ARGS_T_ANON_UID 206 udf_args.anon_uid = uid_nobody; /* default to nobody */ 207 if ((str = hasmntstr(&mnt, MNTTAB_OPT_USER)) != NULL) { 208 udf_args.anon_uid = a_uid(str, MNTTAB_OPT_USER); 209 XFREE(str); 210 } 211 #endif /* HAVE_UDF_ARGS_T_ANON_UID */ 212 213 #ifdef HAVE_UDF_ARGS_T_ANON_GID 214 udf_args.anon_gid = gid_nobody; /* default to nobody */ 215 if ((str = hasmntstr(&mnt, MNTTAB_OPT_GROUP)) != NULL) { 216 udf_args.anon_gid = a_gid(str, MNTTAB_OPT_GROUP); 217 XFREE(str); 218 } 219 #endif /* HAVE_UDF_ARGS_T_ANON_GID */ 220 221 #ifdef HAVE_UDF_ARGS_T_GMTOFF 222 udf_args.gmtoff = 0; 223 if ((str = hasmntstr(&mnt, MNTTAB_OPT_GMTOFF)) != NULL) { 224 udf_args.gmtoff = a_num(str, MNTTAB_OPT_GMTOFF); 225 XFREE(str); 226 } 227 #endif /* HAVE_UDF_ARGS_T_GMTOFF */ 228 229 #ifdef HAVE_UDF_ARGS_T_SESSIONNR 230 udf_args.sessionnr = 0; 231 if ((str = hasmntstr(&mnt, MNTTAB_OPT_SESSIONNR)) != NULL) { 232 udf_args.sessionnr = a_num(str, MNTTAB_OPT_SESSIONNR); 233 XFREE(str); 234 } 235 #endif /* HAVE_UDF_ARGS_T_SESSIONNR */ 236 237 #ifdef HAVE_UDF_ARGS_T_VERSION 238 # ifdef UDFMNT_VERSION 239 udf_args.version = UDFMNT_VERSION; 240 # endif /* UDFMNT_VERSION */ 241 #endif /* HAVE_UDF_ARGS_T_VERSION */ 242 243 #ifdef HAVE_UFS_ARGS_T_FSPEC 244 udf_args.fspec = fs_name; 245 #endif /* HAVE_UFS_ARGS_T_FSPEC */ 246 247 /* 248 * Call generic mount routine 249 */ 250 return mount_fs(&mnt, flags, (caddr_t)&udf_args, 0, type, 0, NULL, 251 mnttab_file_name, on_autofs); 252 } 253 254 static int 255 udf_mount(am_node *am, mntfs *mf) 256 { 257 int on_autofs; 258 int error; 259 260 on_autofs = mf->mf_flags & MFF_ON_AUTOFS; 261 error = mount_udf(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs); 262 if (error) { 263 errno = error; 264 plog(XLOG_ERROR, "mount_udf: %m"); 265 return error; 266 } 267 return 0; 268 } 269 270 271 static int 272 udf_umount(am_node *am, mntfs *mf) 273 { 274 int unmount_flags; 275 276 unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0; 277 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags); 278 } 279