1/* $NetBSD: ops_udf.c,v 1.1.1.2 2015/01/17 16:34:15 christos Exp $ */ 2 3/* 4 * Copyright (c) 1997-2014 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. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * 38 * File: am-utils/amd/ops_udf.c 39 * 40 */ 41 42/* 43 * UDF file system 44 */ 45 46#ifdef HAVE_CONFIG_H 47# include <config.h> 48#endif /* HAVE_CONFIG_H */ 49#include <am_defs.h> 50#include <amd.h> 51 52/* forward definitions */ 53static char *udf_match(am_opts *fo); 54static int udf_mount(am_node *am, mntfs *mf); 55static int udf_umount(am_node *am, mntfs *mf); 56 57/* 58 * Ops structure 59 */ 60am_ops udf_ops = 61{ 62 "udf", 63 udf_match, 64 0, /* udf_init */ 65 udf_mount, 66 udf_umount, 67 amfs_error_lookup_child, 68 amfs_error_mount_child, 69 amfs_error_readdir, 70 0, /* udf_readlink */ 71 0, /* udf_mounted */ 72 0, /* udf_umounted */ 73 amfs_generic_find_srvr, 74 0, /* udf_get_wchan */ 75 FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */ 76#ifdef HAVE_FS_AUTOFS 77 AUTOFS_UDF_FS_FLAGS, 78#endif /* HAVE_FS_AUTOFS */ 79}; 80 81#if defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_NOBODY_UID) 82static int 83a_num(const char *s, const char *id_type) 84{ 85 int id; 86 char *ep; 87 88 id = strtol(s, &ep, 0); 89 if (*ep || s == ep || id < 0) { 90 plog(XLOG_ERROR, "mount_udf: unknown %s: %s", id_type, s); 91 return 0; 92 } 93 return id; 94} 95#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_NOBODY_UID) */ 96 97#if defined(HAVE_UDF_ARGS_T_NOBODY_GID) 98static gid_t 99a_gid(const char *s, const char *id_type) 100{ 101 struct group *gr; 102 103 if ((gr = getgrnam(s)) != NULL) 104 return gr->gr_gid; 105 return a_num(s, id_type); 106} 107#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) */ 108 109#if defined(HAVE_UDF_ARGS_T_NOBODY_UID) 110static uid_t 111a_uid(const char *s, const char *id_type) 112{ 113 struct passwd *pw; 114 115 if ((pw = getpwnam(s)) != NULL) 116 return pw->pw_uid; 117 return a_num(s, id_type); 118} 119#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) */ 120 121/* 122 * UDF needs remote filesystem. 123 */ 124static char * 125udf_match(am_opts *fo) 126{ 127 128 if (!fo->opt_dev) { 129 plog(XLOG_USER, "udf: no source device specified"); 130 return 0; 131 } 132 dlog("UDF: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs); 133 134 /* 135 * Determine magic cookie to put in mtab 136 */ 137 return xstrdup(fo->opt_dev); 138} 139 140static int 141mount_udf(char *mntdir, char *fs_name, char *opts, int on_autofs) 142{ 143 udf_args_t udf_args; 144 mntent_t mnt; 145 int flags; 146 char *str; 147#if defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) 148 uid_t uid_nobody; 149 gid_t gid_nobody; 150#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) */ 151 /* 152 * Figure out the name of the file system type. 153 */ 154 MTYPE_TYPE type = MOUNT_TYPE_UDF; 155 156#if defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) 157 uid_nobody = a_uid("nobody", "user"); 158 if (uid_nobody == 0) { 159 plog(XLOG_ERROR, "mount_udf: invalid uid for nobody"); 160 return EPERM; 161 } 162#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_UID) || defined(HAVE_UDF_ARGS_T_ANON_UID) */ 163 164#if defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_ANON_GID) 165 gid_nobody = a_gid("nobody", "group"); 166 if (gid_nobody == 0) { 167 plog(XLOG_ERROR, "mount_udf: invalid gid for nobody"); 168 return EPERM; 169 } 170#endif /* defined(HAVE_UDF_ARGS_T_NOBODY_GID) || defined(HAVE_UDF_ARGS_T_ANON_GID) */ 171 172 str = NULL; 173 memset((voidp) &udf_args, 0, sizeof(udf_args)); /* Paranoid */ 174 175 /* 176 * Fill in the mount structure 177 */ 178 memset((voidp)&mnt, 0, sizeof(mnt)); 179 mnt.mnt_dir = mntdir; 180 mnt.mnt_fsname = fs_name; 181 mnt.mnt_type = MNTTAB_TYPE_UDF; 182 mnt.mnt_opts = opts; 183 184 flags = compute_mount_flags(&mnt); 185 186#ifdef HAVE_UDF_ARGS_T_UDFMFLAGS 187# if defined(MNT2_UDF_OPT_CLOSESESSION) && defined(MNTTAB_OPT_CLOSESESSION) 188 if (amu_hasmntopt(&mnt, MNTTAB_OPT_CLOSESESSION)) 189 udf_args.udfmflags |= MNT2_UDF_OPT_CLOSESESSION; 190# endif /* defined(MNT2_UDF_OPT_CLOSESESSION) && defined(MNTTAB_OPT_CLOSESESSION) */ 191#endif /* HAVE_UDF_ARGS_T_UDFMFLAGS */ 192 193#ifdef HAVE_UDF_ARGS_T_NOBODY_UID 194 udf_args.nobody_uid = uid_nobody; 195#endif /* HAVE_UDF_ARGS_T_NOBODY_UID */ 196 197#ifdef HAVE_UDF_ARGS_T_NOBODY_GID 198 udf_args.nobody_gid = gid_nobody; 199#endif /* HAVE_UDF_ARGS_T_NOBODY_GID */ 200 201#ifdef HAVE_UDF_ARGS_T_ANON_UID 202 udf_args.anon_uid = uid_nobody; /* default to nobody */ 203 if ((str = hasmntstr(&mnt, MNTTAB_OPT_USER)) != NULL) { 204 udf_args.anon_uid = a_uid(str, MNTTAB_OPT_USER); 205 XFREE(str); 206 } 207#endif /* HAVE_UDF_ARGS_T_ANON_UID */ 208 209#ifdef HAVE_UDF_ARGS_T_ANON_GID 210 udf_args.anon_gid = gid_nobody; /* default to nobody */ 211 if ((str = hasmntstr(&mnt, MNTTAB_OPT_GROUP)) != NULL) { 212 udf_args.anon_gid = a_gid(str, MNTTAB_OPT_GROUP); 213 XFREE(str); 214 } 215#endif /* HAVE_UDF_ARGS_T_ANON_GID */ 216 217#ifdef HAVE_UDF_ARGS_T_GMTOFF 218 udf_args.gmtoff = 0; 219 if ((str = hasmntstr(&mnt, MNTTAB_OPT_GMTOFF)) != NULL) { 220 udf_args.gmtoff = a_num(str, MNTTAB_OPT_GMTOFF); 221 XFREE(str); 222 } 223#endif /* HAVE_UDF_ARGS_T_GMTOFF */ 224 225#ifdef HAVE_UDF_ARGS_T_SESSIONNR 226 udf_args.sessionnr = 0; 227 if ((str = hasmntstr(&mnt, MNTTAB_OPT_SESSIONNR)) != NULL) { 228 udf_args.sessionnr = a_num(str, MNTTAB_OPT_SESSIONNR); 229 XFREE(str); 230 } 231#endif /* HAVE_UDF_ARGS_T_SESSIONNR */ 232 233#ifdef HAVE_UDF_ARGS_T_VERSION 234# ifdef UDFMNT_VERSION 235 udf_args.version = UDFMNT_VERSION; 236# endif /* UDFMNT_VERSION */ 237#endif /* HAVE_UDF_ARGS_T_VERSION */ 238 239#ifdef HAVE_UFS_ARGS_T_FSPEC 240 udf_args.fspec = fs_name; 241#endif /* HAVE_UFS_ARGS_T_FSPEC */ 242 243 /* 244 * Call generic mount routine 245 */ 246 return mount_fs(&mnt, flags, (caddr_t)&udf_args, 0, type, 0, NULL, 247 mnttab_file_name, on_autofs); 248} 249 250static int 251udf_mount(am_node *am, mntfs *mf) 252{ 253 int on_autofs; 254 int error; 255 256 on_autofs = mf->mf_flags & MFF_ON_AUTOFS; 257 error = mount_udf(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs); 258 if (error) { 259 errno = error; 260 plog(XLOG_ERROR, "mount_udf: %m"); 261 return error; 262 } 263 return 0; 264} 265 266 267static int 268udf_umount(am_node *am, mntfs *mf) 269{ 270 int unmount_flags; 271 272 unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0; 273 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags); 274} 275