xref: /netbsd-src/external/bsd/am-utils/dist/amd/ops_pcfs.c (revision 8bae5d409deb915cf7c8f0539fae22ff2cb8a313)
1*8bae5d40Schristos /*	$NetBSD: ops_pcfs.c,v 1.1.1.3 2015/01/17 16:34:15 christos Exp $	*/
2a53f50b9Schristos 
3a53f50b9Schristos /*
4*8bae5d40Schristos  * Copyright (c) 1997-2014 Erez Zadok
5a53f50b9Schristos  * Copyright (c) 1990 Jan-Simon Pendry
6a53f50b9Schristos  * Copyright (c) 1990 Imperial College of Science, Technology & Medicine
7a53f50b9Schristos  * Copyright (c) 1990 The Regents of the University of California.
8a53f50b9Schristos  * All rights reserved.
9a53f50b9Schristos  *
10a53f50b9Schristos  * This code is derived from software contributed to Berkeley by
11a53f50b9Schristos  * Jan-Simon Pendry at Imperial College, London.
12a53f50b9Schristos  *
13a53f50b9Schristos  * Redistribution and use in source and binary forms, with or without
14a53f50b9Schristos  * modification, are permitted provided that the following conditions
15a53f50b9Schristos  * are met:
16a53f50b9Schristos  * 1. Redistributions of source code must retain the above copyright
17a53f50b9Schristos  *    notice, this list of conditions and the following disclaimer.
18a53f50b9Schristos  * 2. Redistributions in binary form must reproduce the above copyright
19a53f50b9Schristos  *    notice, this list of conditions and the following disclaimer in the
20a53f50b9Schristos  *    documentation and/or other materials provided with the distribution.
21*8bae5d40Schristos  * 3. Neither the name of the University nor the names of its contributors
22a53f50b9Schristos  *    may be used to endorse or promote products derived from this software
23a53f50b9Schristos  *    without specific prior written permission.
24a53f50b9Schristos  *
25a53f50b9Schristos  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26a53f50b9Schristos  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27a53f50b9Schristos  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28a53f50b9Schristos  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29a53f50b9Schristos  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30a53f50b9Schristos  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31a53f50b9Schristos  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32a53f50b9Schristos  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33a53f50b9Schristos  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34a53f50b9Schristos  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35a53f50b9Schristos  * SUCH DAMAGE.
36a53f50b9Schristos  *
37a53f50b9Schristos  *
38a53f50b9Schristos  * File: am-utils/amd/ops_pcfs.c
39a53f50b9Schristos  *
40a53f50b9Schristos  */
41a53f50b9Schristos 
42a53f50b9Schristos /*
43a53f50b9Schristos  * PC (MS-DOS) file system
44a53f50b9Schristos  */
45a53f50b9Schristos 
46a53f50b9Schristos #ifdef HAVE_CONFIG_H
47a53f50b9Schristos # include <config.h>
48a53f50b9Schristos #endif /* HAVE_CONFIG_H */
49a53f50b9Schristos #include <am_defs.h>
50a53f50b9Schristos #include <amd.h>
51a53f50b9Schristos 
52a53f50b9Schristos /* forward definitions */
53a53f50b9Schristos static char *pcfs_match(am_opts *fo);
54a53f50b9Schristos static int pcfs_mount(am_node *am, mntfs *mf);
55a53f50b9Schristos static int pcfs_umount(am_node *am, mntfs *mf);
56a53f50b9Schristos 
57a53f50b9Schristos /*
58a53f50b9Schristos  * Ops structure
59a53f50b9Schristos  */
60a53f50b9Schristos am_ops pcfs_ops =
61a53f50b9Schristos {
62a53f50b9Schristos   "pcfs",
63a53f50b9Schristos   pcfs_match,
64a53f50b9Schristos   0,				/* pcfs_init */
65a53f50b9Schristos   pcfs_mount,
66a53f50b9Schristos   pcfs_umount,
67a53f50b9Schristos   amfs_error_lookup_child,
68a53f50b9Schristos   amfs_error_mount_child,
69a53f50b9Schristos   amfs_error_readdir,
70a53f50b9Schristos   0,				/* pcfs_readlink */
71a53f50b9Schristos   0,				/* pcfs_mounted */
72a53f50b9Schristos   0,				/* pcfs_umounted */
73a53f50b9Schristos   amfs_generic_find_srvr,
74a53f50b9Schristos   0,				/* pcfs_get_wchan */
75a53f50b9Schristos   FS_MKMNT | FS_UBACKGROUND | FS_AMQINFO,	/* nfs_fs_flags */
76a53f50b9Schristos #ifdef HAVE_FS_AUTOFS
77a53f50b9Schristos   AUTOFS_PCFS_FS_FLAGS,
78a53f50b9Schristos #endif /* HAVE_FS_AUTOFS */
79a53f50b9Schristos };
80a53f50b9Schristos 
81a53f50b9Schristos 
82a53f50b9Schristos 
83a53f50b9Schristos /*
84a53f50b9Schristos  * PCFS needs remote filesystem.
85a53f50b9Schristos  */
86a53f50b9Schristos static char *
pcfs_match(am_opts * fo)87a53f50b9Schristos pcfs_match(am_opts *fo)
88a53f50b9Schristos {
89a53f50b9Schristos   if (!fo->opt_dev) {
90a53f50b9Schristos     plog(XLOG_USER, "pcfs: no source device specified");
91a53f50b9Schristos     return 0;
92a53f50b9Schristos   }
93a53f50b9Schristos   dlog("PCFS: mounting device \"%s\" on \"%s\"", fo->opt_dev, fo->opt_fs);
94a53f50b9Schristos 
95a53f50b9Schristos   /*
96a53f50b9Schristos    * Determine magic cookie to put in mtab
97a53f50b9Schristos    */
98*8bae5d40Schristos   return xstrdup(fo->opt_dev);
99a53f50b9Schristos }
100a53f50b9Schristos 
101a53f50b9Schristos 
102a53f50b9Schristos static int
mount_pcfs(char * mntdir,char * fs_name,char * opts,int on_autofs)103a53f50b9Schristos mount_pcfs(char *mntdir, char *fs_name, char *opts, int on_autofs)
104a53f50b9Schristos {
105a53f50b9Schristos   pcfs_args_t pcfs_args;
106a53f50b9Schristos   mntent_t mnt;
107a53f50b9Schristos   int flags;
108a53f50b9Schristos #if defined(HAVE_PCFS_ARGS_T_MASK) || defined(HAVE_PCFS_ARGS_T_DIRMASK)
109a53f50b9Schristos   int mask;
110a53f50b9Schristos #endif /* defined(HAVE_PCFS_ARGS_T_MASK) || defined(HAVE_PCFS_ARGS_T_DIRMASK) */
111a53f50b9Schristos #if defined(HAVE_PCFS_ARGS_T_UID) || defined(HAVE_PCFS_ARGS_T_UID)
112a53f50b9Schristos   char *str;
113a53f50b9Schristos #endif /* defined(HAVE_PCFS_ARGS_T_UID) || defined(HAVE_PCFS_ARGS_T_UID) */
114a53f50b9Schristos 
115a53f50b9Schristos   /*
116a53f50b9Schristos    * Figure out the name of the file system type.
117a53f50b9Schristos    */
118a53f50b9Schristos   MTYPE_TYPE type = MOUNT_TYPE_PCFS;
119a53f50b9Schristos 
120a53f50b9Schristos   memset((voidp) &pcfs_args, 0, sizeof(pcfs_args)); /* Paranoid */
121a53f50b9Schristos 
122a53f50b9Schristos   /*
123a53f50b9Schristos    * Fill in the mount structure
124a53f50b9Schristos    */
125a53f50b9Schristos   memset((voidp) &mnt, 0, sizeof(mnt));
126a53f50b9Schristos   mnt.mnt_dir = mntdir;
127a53f50b9Schristos   mnt.mnt_fsname = fs_name;
128a53f50b9Schristos   mnt.mnt_type = MNTTAB_TYPE_PCFS;
129a53f50b9Schristos   mnt.mnt_opts = opts;
130a53f50b9Schristos 
131a53f50b9Schristos   flags = compute_mount_flags(&mnt);
132a53f50b9Schristos #ifdef HAVE_FS_AUTOFS
133a53f50b9Schristos   if (on_autofs)
134a53f50b9Schristos     flags |= autofs_compute_mount_flags(&mnt);
135a53f50b9Schristos #endif /* HAVE_FS_AUTOFS */
136a53f50b9Schristos   if (amuDebug(D_TRACE))
137a53f50b9Schristos     plog(XLOG_DEBUG, "mount_pcfs: flags=0x%x", (u_int) flags);
138a53f50b9Schristos 
139a53f50b9Schristos #ifdef HAVE_PCFS_ARGS_T_FSPEC
140a53f50b9Schristos   pcfs_args.fspec = fs_name;
141a53f50b9Schristos #endif /* HAVE_PCFS_ARGS_T_FSPEC */
142a53f50b9Schristos 
143a53f50b9Schristos #ifdef HAVE_PCFS_ARGS_T_MASK
144a53f50b9Schristos   pcfs_args.mask = 0777;	/* this may be the msdos file modes */
145a53f50b9Schristos   if ((mask = hasmntval(&mnt, MNTTAB_OPT_MASK)) > 0)
146a53f50b9Schristos     pcfs_args.mask = mask;
147a53f50b9Schristos   if (amuDebug(D_TRACE))
148a53f50b9Schristos     plog(XLOG_DEBUG, "mount_pcfs: mask=%o (octal)", (u_int) pcfs_args.mask);
149a53f50b9Schristos #endif /* HAVE_PCFS_ARGS_T_MASK */
150a53f50b9Schristos 
151a53f50b9Schristos #ifdef HAVE_PCFS_ARGS_T_DIRMASK
152a53f50b9Schristos   pcfs_args.dirmask = 0777;    /* this may be the msdos dir modes */
153a53f50b9Schristos   if ((mask = hasmntval(&mnt, MNTTAB_OPT_DIRMASK)) > 0)
154a53f50b9Schristos     pcfs_args.dirmask = mask;
155a53f50b9Schristos   if (amuDebug(D_TRACE))
156a53f50b9Schristos     plog(XLOG_DEBUG, "mount_pcfs: dirmask=%o (octal)", (u_int) pcfs_args.dirmask);
157a53f50b9Schristos #endif /* HAVE_PCFS_ARGS_T_DIRMASK */
158a53f50b9Schristos 
159a53f50b9Schristos #ifdef HAVE_PCFS_ARGS_T_UID
160a53f50b9Schristos   pcfs_args.uid = 0;		/* default to root */
161a53f50b9Schristos   if ((str = hasmntstr(&mnt, MNTTAB_OPT_USER)) != NULL) {
162a53f50b9Schristos     struct passwd *pw;
163a53f50b9Schristos     if ((pw = getpwnam(str)) != NULL)
164a53f50b9Schristos       pcfs_args.uid = pw->pw_uid;
165a53f50b9Schristos     else		 /* maybe used passed a UID number, not user name */
166a53f50b9Schristos       pcfs_args.uid = atoi(str); /* atoi returns '0' if it failed */
167a53f50b9Schristos     XFREE(str);
168a53f50b9Schristos   }
169a53f50b9Schristos   if (amuDebug(D_TRACE))
170a53f50b9Schristos     plog(XLOG_DEBUG, "mount_pcfs: uid=%d", (int) pcfs_args.uid);
171a53f50b9Schristos #endif /* HAVE_PCFS_ARGS_T_UID */
172a53f50b9Schristos 
173a53f50b9Schristos #ifdef HAVE_PCFS_ARGS_T_GID
174a53f50b9Schristos   pcfs_args.gid = 0;		/* default to wheel/root group */
175a53f50b9Schristos   if ((str = hasmntstr(&mnt, MNTTAB_OPT_GROUP)) != NULL) {
176a53f50b9Schristos     struct group *gr;
177a53f50b9Schristos     if ((gr = getgrnam(str)) != NULL)
178a53f50b9Schristos       pcfs_args.gid = gr->gr_gid;
179a53f50b9Schristos     else		/* maybe used passed a GID number, not group name */
180a53f50b9Schristos       pcfs_args.gid = atoi(str); /* atoi returns '0' if it failed */
181a53f50b9Schristos     XFREE(str);
182a53f50b9Schristos   }
183a53f50b9Schristos   if (amuDebug(D_TRACE))
184a53f50b9Schristos     plog(XLOG_DEBUG, "mount_pcfs: gid=%d", (int) pcfs_args.gid);
185a53f50b9Schristos #endif /* HAVE_PCFS_ARGS_T_GID */
186a53f50b9Schristos 
187a53f50b9Schristos #ifdef HAVE_PCFS_ARGS_T_SECONDSWEST
188a53f50b9Schristos   pcfs_args.secondswest = 0;	/* XXX: fill in correct values */
189a53f50b9Schristos #endif /* HAVE_PCFS_ARGS_T_SECONDSWEST */
190a53f50b9Schristos #ifdef HAVE_PCFS_ARGS_T_DSTTIME
191a53f50b9Schristos   pcfs_args.dsttime = 0;	/* XXX: fill in correct values */
192a53f50b9Schristos #endif /* HAVE_PCFS_ARGS_T_DSTTIME */
193a53f50b9Schristos 
194a53f50b9Schristos   /*
195a53f50b9Schristos    * Call generic mount routine
196a53f50b9Schristos    */
197a53f50b9Schristos   return mount_fs(&mnt, flags, (caddr_t) & pcfs_args, 0, type, 0, NULL, mnttab_file_name, on_autofs);
198a53f50b9Schristos }
199a53f50b9Schristos 
200a53f50b9Schristos 
201a53f50b9Schristos static int
pcfs_mount(am_node * am,mntfs * mf)202a53f50b9Schristos pcfs_mount(am_node *am, mntfs *mf)
203a53f50b9Schristos {
204a53f50b9Schristos   int on_autofs = mf->mf_flags & MFF_ON_AUTOFS;
205a53f50b9Schristos   int error;
206a53f50b9Schristos 
207a53f50b9Schristos   error = mount_pcfs(mf->mf_mount, mf->mf_info, mf->mf_mopts, on_autofs);
208a53f50b9Schristos   if (error) {
209a53f50b9Schristos     errno = error;
210a53f50b9Schristos     plog(XLOG_ERROR, "mount_pcfs: %m");
211a53f50b9Schristos     return error;
212a53f50b9Schristos   }
213a53f50b9Schristos 
214a53f50b9Schristos   return 0;
215a53f50b9Schristos }
216a53f50b9Schristos 
217a53f50b9Schristos 
218a53f50b9Schristos static int
pcfs_umount(am_node * am,mntfs * mf)219a53f50b9Schristos pcfs_umount(am_node *am, mntfs *mf)
220a53f50b9Schristos {
221a53f50b9Schristos   int unmount_flags = (mf->mf_flags & MFF_ON_AUTOFS) ? AMU_UMOUNT_AUTOFS : 0;
222a53f50b9Schristos 
223a53f50b9Schristos   return UMOUNT_FS(mf->mf_mount, mnttab_file_name, unmount_flags);
224a53f50b9Schristos }
225