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 *
pcfs_match(am_opts * fo)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
mount_pcfs(char * mntdir,char * fs_name,char * opts,int on_autofs)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
pcfs_mount(am_node * am,mntfs * mf)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
pcfs_umount(am_node * am,mntfs * mf)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