1 /*
2 * Copyright (c) 2000-2002, Boris Popov
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $Id: mount_smbfs.c,v 1.17 2002/04/10 04:17:51 bp Exp $
33 * $FreeBSD$
34 */
35 #include <sys/param.h>
36 #include <sys/stat.h>
37 #include <sys/errno.h>
38 #include <sys/linker.h>
39 #include <sys/mount.h>
40
41 #include <stdio.h>
42 #include <string.h>
43 #include <pwd.h>
44 #include <grp.h>
45 #include <unistd.h>
46 #include <ctype.h>
47 #include <stdlib.h>
48 #include <err.h>
49 #include <sysexits.h>
50
51 #include <cflib.h>
52
53 #include <netsmb/smb.h>
54 #include <netsmb/smb_conn.h>
55 #include <netsmb/smb_lib.h>
56
57 #include <fs/smbfs/smbfs.h>
58
59 #include "mntopts.h"
60
61 static char mount_point[MAXPATHLEN + 1];
62 static void usage(void);
63
64 static struct mntopt mopts[] = {
65 MOPT_STDOPTS,
66 MOPT_END
67 };
68
69 static char smbfs_vfsname[] = "smbfs";
70
71 int
main(int argc,char * argv[])72 main(int argc, char *argv[])
73 {
74 struct iovec *iov;
75 unsigned int iovlen;
76 struct smb_ctx sctx, *ctx = &sctx;
77 struct stat st;
78 #ifdef APPLE
79 extern void dropsuid();
80 extern int loadsmbvfs();
81 #else
82 struct xvfsconf vfc;
83 #endif
84 char *next, *p, *val;
85 int opt, error, mntflags, caseopt, fd;
86 uid_t uid;
87 gid_t gid;
88 mode_t dir_mode, file_mode;
89 char errmsg[255] = { 0 };
90
91 iov = NULL;
92 iovlen = 0;
93 fd = 0;
94 uid = (uid_t)-1;
95 gid = (gid_t)-1;
96 caseopt = 0;
97 file_mode = 0;
98 dir_mode = 0;
99
100 #ifdef APPLE
101 dropsuid();
102 #endif
103 if (argc == 2) {
104 if (strcmp(argv[1], "-h") == 0) {
105 usage();
106 }
107 }
108 if (argc < 3)
109 usage();
110
111 #ifdef APPLE
112 error = loadsmbvfs();
113 #else
114 error = getvfsbyname(smbfs_vfsname, &vfc);
115 if (error) {
116 if (kldload(smbfs_vfsname) < 0)
117 err(EX_OSERR, "kldload(%s)", smbfs_vfsname);
118 error = getvfsbyname(smbfs_vfsname, &vfc);
119 }
120 #endif
121 if (error)
122 errx(EX_OSERR, "SMB filesystem is not available");
123
124 if (smb_lib_init() != 0)
125 exit(1);
126
127 mntflags = error = 0;
128
129 caseopt = SMB_CS_NONE;
130
131 if (smb_ctx_init(ctx, argc, argv, SMBL_SHARE, SMBL_SHARE, SMB_ST_DISK) != 0)
132 exit(1);
133 if (smb_ctx_readrc(ctx) != 0)
134 exit(1);
135 if (smb_rc)
136 rc_close(smb_rc);
137
138 while ((opt = getopt(argc, argv, STDPARAM_OPT"c:d:f:g:l:n:o:u:w:")) != -1) {
139 switch (opt) {
140 case STDPARAM_ARGS:
141 error = smb_ctx_opt(ctx, opt, optarg);
142 if (error)
143 exit(1);
144 break;
145 case 'u': {
146 struct passwd *pwd;
147
148 pwd = isdigit(optarg[0]) ?
149 getpwuid(atoi(optarg)) : getpwnam(optarg);
150 if (pwd == NULL)
151 errx(EX_NOUSER, "unknown user '%s'", optarg);
152 uid = pwd->pw_uid;
153 break;
154 }
155 case 'g': {
156 struct group *grp;
157
158 grp = isdigit(optarg[0]) ?
159 getgrgid(atoi(optarg)) : getgrnam(optarg);
160 if (grp == NULL)
161 errx(EX_NOUSER, "unknown group '%s'", optarg);
162 gid = grp->gr_gid;
163 break;
164 }
165 case 'd':
166 errno = 0;
167 dir_mode = strtol(optarg, &next, 8);
168 if (errno || *next != 0)
169 errx(EX_DATAERR, "invalid value for directory mode");
170 break;
171 case 'f':
172 errno = 0;
173 file_mode = strtol(optarg, &next, 8);
174 if (errno || *next != 0)
175 errx(EX_DATAERR, "invalid value for file mode");
176 break;
177 case '?':
178 usage();
179 /*NOTREACHED*/
180 case 'n': {
181 char *inp, *nsp;
182
183 nsp = inp = optarg;
184 while ((nsp = strsep(&inp, ",;:")) != NULL) {
185 if (strcasecmp(nsp, "LONG") == 0) {
186 build_iovec(&iov, &iovlen,
187 "nolong", NULL, 0);
188 } else {
189 errx(EX_DATAERR,
190 "unknown suboption '%s'", nsp);
191 }
192 }
193 break;
194 };
195 case 'o':
196 getmntopts(optarg, mopts, &mntflags, 0);
197 p = strchr(optarg, '=');
198 val = NULL;
199 if (p != NULL) {
200 *p = '\0';
201 val = p + 1;
202 }
203 build_iovec(&iov, &iovlen, optarg, val, (size_t)-1);
204 break;
205 case 'c':
206 switch (optarg[0]) {
207 case 'l':
208 caseopt |= SMB_CS_LOWER;
209 break;
210 case 'u':
211 caseopt |= SMB_CS_UPPER;
212 break;
213 default:
214 errx(EX_DATAERR, "invalid suboption '%c' for -c",
215 optarg[0]);
216 }
217 break;
218 default:
219 usage();
220 }
221 }
222
223 if (optind == argc - 2)
224 optind++;
225
226 if (optind != argc - 1)
227 usage();
228 realpath(argv[optind], mount_point);
229
230 if (stat(mount_point, &st) == -1)
231 err(EX_OSERR, "could not find mount point %s", mount_point);
232 if (!S_ISDIR(st.st_mode)) {
233 errno = ENOTDIR;
234 err(EX_OSERR, "can't mount on %s", mount_point);
235 }
236 /*
237 if (smb_getextattr(mount_point, &einfo) == 0)
238 errx(EX_OSERR, "can't mount on %s twice", mount_point);
239 */
240 if (uid == (uid_t)-1)
241 uid = st.st_uid;
242 if (gid == (gid_t)-1)
243 gid = st.st_gid;
244 if (file_mode == 0 )
245 file_mode = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
246 if (dir_mode == 0) {
247 dir_mode = file_mode;
248 if (dir_mode & S_IRUSR)
249 dir_mode |= S_IXUSR;
250 if (dir_mode & S_IRGRP)
251 dir_mode |= S_IXGRP;
252 if (dir_mode & S_IROTH)
253 dir_mode |= S_IXOTH;
254 }
255 /*
256 * For now, let connection be private for this mount
257 */
258 ctx->ct_ssn.ioc_opt |= SMBVOPT_PRIVATE;
259 ctx->ct_ssn.ioc_owner = ctx->ct_sh.ioc_owner = 0; /* root */
260 ctx->ct_ssn.ioc_group = ctx->ct_sh.ioc_group = gid;
261 opt = 0;
262 if (dir_mode & S_IXGRP)
263 opt |= SMBM_EXECGRP;
264 if (dir_mode & S_IXOTH)
265 opt |= SMBM_EXECOTH;
266 ctx->ct_ssn.ioc_rights |= opt;
267 ctx->ct_sh.ioc_rights |= opt;
268 error = smb_ctx_resolve(ctx);
269 if (error)
270 exit(1);
271 error = smb_ctx_lookup(ctx, SMBL_SHARE, SMBLK_CREATE);
272 if (error) {
273 exit(1);
274 }
275
276 fd = ctx->ct_fd;
277
278 build_iovec(&iov, &iovlen, "fstype", strdup("smbfs"), -1);
279 build_iovec(&iov, &iovlen, "fspath", mount_point, -1);
280 build_iovec_argf(&iov, &iovlen, "fd", "%d", fd);
281 build_iovec(&iov, &iovlen, "mountpoint", mount_point, -1);
282 build_iovec_argf(&iov, &iovlen, "uid", "%d", uid);
283 build_iovec_argf(&iov, &iovlen, "gid", "%d", gid);
284 build_iovec_argf(&iov, &iovlen, "file_mode", "%d", file_mode);
285 build_iovec_argf(&iov, &iovlen, "dir_mode", "%d", dir_mode);
286 build_iovec_argf(&iov, &iovlen, "caseopt", "%d", caseopt);
287 build_iovec(&iov, &iovlen, "errmsg", errmsg, sizeof errmsg);
288
289 error = nmount(iov, iovlen, mntflags);
290 smb_ctx_done(ctx);
291 if (error) {
292 smb_error("mount error: %s %s", error, mount_point, errmsg);
293 exit(1);
294 }
295 return 0;
296 }
297
298 static void
usage(void)299 usage(void)
300 {
301 fprintf(stderr, "%s\n%s\n%s\n%s\n",
302 "usage: mount_smbfs [-E cs1:cs2] [-I host] [-L locale] [-M crights:srights]",
303 " [-N] [-O cowner:cgroup/sowner:sgroup] [-R retrycount]",
304 " [-T timeout] [-W workgroup] [-c case] [-d mode] [-f mode]",
305 " [-g gid] [-n opt] [-u uid] [-U username] //user@server/share node");
306
307 exit (1);
308 }
309