1 /* $NetBSD: ops_pcfs.c,v 1.1.1.3 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_pcfs.c 39 * 40 */ 41 42 /* 43 * PC (MS-DOS) 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 */ 53 static char *pcfs_match(am_opts *fo); 54 static int pcfs_mount(am_node *am, mntfs *mf); 55 static int pcfs_umount(am_node *am, mntfs *mf); 56 57 /* 58 * Ops structure 59 */ 60 am_ops pcfs_ops = 61 { 62 "pcfs", 63 pcfs_match, 64 0, /* pcfs_init */ 65 pcfs_mount, 66 pcfs_umount, 67 amfs_error_lookup_child, 68 amfs_error_mount_child, 69 amfs_error_readdir, 70 0, /* pcfs_readlink */ 71 0, /* pcfs_mounted */ 72 0, /* pcfs_umounted */ 73 amfs_generic_find_srvr, 74 0, /* pcfs_get_wchan */ 75 FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO, /* nfs_fs_flags */ 76 #ifdef HAVE_FS_AUTOFS 77 AUTOFS_PCFS_FS_FLAGS, 78 #endif /* HAVE_FS_AUTOFS */ 79 }; 80 81 82 83 /* 84 * PCFS needs remote filesystem. 85 */ 86 static char * 87 pcfs_match(am_opts *fo) 88 { 89 if (!fo->opt_dev) { 90 plog(XLOG_USER, "pcfs: no source device specified"); 91 return 0; 92 } 93 dlog("PCFS: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs); 94 95 /* 96 * Determine magic cookie to put in mtab 97 */ 98 return xstrdup(fo->opt_dev); 99 } 100 101 102 static int 103 mount_pcfs(char *mntdir, char *fs_name, char *opts, int on_autofs) 104 { 105 pcfs_args_t pcfs_args; 106 mntent_t mnt; 107 int flags; 108 #if defined(HAVE_PCFS_ARGS_T_MASK) || defined(HAVE_PCFS_ARGS_T_DIRMASK) 109 int mask; 110 #endif /* defined(HAVE_PCFS_ARGS_T_MASK) || defined(HAVE_PCFS_ARGS_T_DIRMASK) */ 111 #if defined(HAVE_PCFS_ARGS_T_UID) || defined(HAVE_PCFS_ARGS_T_UID) 112 char *str; 113 #endif /* defined(HAVE_PCFS_ARGS_T_UID) || defined(HAVE_PCFS_ARGS_T_UID) */ 114 115 /* 116 * Figure out the name of the file system type. 117 */ 118 MTYPE_TYPE type = MOUNT_TYPE_PCFS; 119 120 memset((voidp) &pcfs_args, 0, sizeof(pcfs_args)); /* Paranoid */ 121 122 /* 123 * Fill in the mount structure 124 */ 125 memset((voidp) &mnt, 0, sizeof(mnt)); 126 mnt.mnt_dir = mntdir; 127 mnt.mnt_fsname = fs_name; 128 mnt.mnt_type = MNTTAB_TYPE_PCFS; 129 mnt.mnt_opts = opts; 130 131 flags = compute_mount_flags(&mnt); 132 #ifdef HAVE_FS_AUTOFS 133 if (on_autofs) 134 flags |= autofs_compute_mount_flags(&mnt); 135 #endif /* HAVE_FS_AUTOFS */ 136 if (amuDebug(D_TRACE)) 137 plog(XLOG_DEBUG, "mount_pcfs: flags=0x%x", (u_int) flags); 138 139 #ifdef HAVE_PCFS_ARGS_T_FSPEC 140 pcfs_args.fspec = fs_name; 141 #endif /* HAVE_PCFS_ARGS_T_FSPEC */ 142 143 #ifdef HAVE_PCFS_ARGS_T_MASK 144 pcfs_args.mask = 0777; /* this may be the msdos file modes */ 145 if ((mask = hasmntval(&mnt, MNTTAB_OPT_MASK)) > 0) 146 pcfs_args.mask = mask; 147 if (amuDebug(D_TRACE)) 148 plog(XLOG_DEBUG, "mount_pcfs: mask=%o (octal)", (u_int) pcfs_args.mask); 149 #endif /* HAVE_PCFS_ARGS_T_MASK */ 150 151 #ifdef HAVE_PCFS_ARGS_T_DIRMASK 152 pcfs_args.dirmask = 0777; /* this may be the msdos dir modes */ 153 if ((mask = hasmntval(&mnt, MNTTAB_OPT_DIRMASK)) > 0) 154 pcfs_args.dirmask = mask; 155 if (amuDebug(D_TRACE)) 156 plog(XLOG_DEBUG, "mount_pcfs: dirmask=%o (octal)", (u_int) pcfs_args.dirmask); 157 #endif /* HAVE_PCFS_ARGS_T_DIRMASK */ 158 159 #ifdef HAVE_PCFS_ARGS_T_UID 160 pcfs_args.uid = 0; /* default to root */ 161 if ((str = hasmntstr(&mnt, MNTTAB_OPT_USER)) != NULL) { 162 struct passwd *pw; 163 if ((pw = getpwnam(str)) != NULL) 164 pcfs_args.uid = pw->pw_uid; 165 else /* maybe used passed a UID number, not user name */ 166 pcfs_args.uid = atoi(str); /* atoi returns '0' if it failed */ 167 XFREE(str); 168 } 169 if (amuDebug(D_TRACE)) 170 plog(XLOG_DEBUG, "mount_pcfs: uid=%d", (int) pcfs_args.uid); 171 #endif /* HAVE_PCFS_ARGS_T_UID */ 172 173 #ifdef HAVE_PCFS_ARGS_T_GID 174 pcfs_args.gid = 0; /* default to wheel/root group */ 175 if ((str = hasmntstr(&mnt, MNTTAB_OPT_GROUP)) != NULL) { 176 struct group *gr; 177 if ((gr = getgrnam(str)) != NULL) 178 pcfs_args.gid = gr->gr_gid; 179 else /* maybe used passed a GID number, not group name */ 180 pcfs_args.gid = atoi(str); /* atoi returns '0' if it failed */ 181 XFREE(str); 182 } 183 if (amuDebug(D_TRACE)) 184 plog(XLOG_DEBUG, "mount_pcfs: gid=%d", (int) pcfs_args.gid); 185 #endif /* HAVE_PCFS_ARGS_T_GID */ 186 187 #ifdef HAVE_PCFS_ARGS_T_SECONDSWEST 188 pcfs_args.secondswest = 0; /* XXX: fill in correct values */ 189 #endif /* HAVE_PCFS_ARGS_T_SECONDSWEST */ 190 #ifdef HAVE_PCFS_ARGS_T_DSTTIME 191 pcfs_args.dsttime = 0; /* XXX: fill in correct values */ 192 #endif /* HAVE_PCFS_ARGS_T_DSTTIME */ 193 194 /* 195 * Call generic mount routine 196 */ 197 return mount_fs(&mnt, flags, (caddr_t) & pcfs_args, 0, type, 0, NULL, mnttab_file_name, on_autofs); 198 } 199 200 201 static int 202 pcfs_mount(am_node *am, mntfs *mf) 203 { 204 int on_autofs = mf->mf_flags & MFF_ON_AUTOFS; 205 int error; 206 207 error = mount_pcfs(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs); 208 if (error) { 209 errno = error; 210 plog(XLOG_ERROR, "mount_pcfs: %m"); 211 return error; 212 } 213 214 return 0; 215 } 216 217 218 static int 219 pcfs_umount(am_node *am, mntfs *mf) 220 { 221 int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0; 222 223 return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags); 224 } 225
Indexes created Tue Feb 24 08:35:24 UTC 2026