xref: /illumos-gate/usr/src/cmd/fs.d/fd/mount.c (revision 7c478bd9)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 
33 #include	<stdio.h>
34 #include	<stdlib.h>
35 #include	<signal.h>
36 #include	<string.h>
37 #include	<unistd.h>
38 #include	<errno.h>
39 #include	<sys/mnttab.h>
40 #include	<sys/mount.h>
41 #include	<sys/types.h>
42 #include	<locale.h>
43 #include	<fslib.h>
44 
45 #define	NAME_MAX	64	/* sizeof "fstype myname" */
46 
47 #define	FSTYPE		"fd"
48 
49 static char  optbuf[MAX_MNTOPT_STR] = { '\0', };
50 static int   optsize = 0;
51 
52 static int	flags = 0;
53 static int	mflg = 0;
54 static int	qflg = 0;
55 
56 static char	typename[NAME_MAX], *myname;
57 static char	fstype[] = FSTYPE;
58 
59 static void usage(void);
60 static void do_mount(char *, char *, int);
61 
62 int
main(int argc,char ** argv)63 main(int argc, char **argv)
64 {
65 	char	*special, *mountp;
66 	int	errflag = 0;
67 	int	cc;
68 
69 	(void) setlocale(LC_ALL, "");
70 
71 #if !defined(TEXT_DOMAIN)
72 #define	TEXT_DOMAIN "SYS_TEST"
73 #endif
74 	(void) textdomain(TEXT_DOMAIN);
75 
76 	myname = strrchr(argv[0], '/');
77 	if (myname)
78 		myname++;
79 	else
80 		myname = argv[0];
81 	(void) snprintf(typename, sizeof (typename), "%s %s", fstype, myname);
82 	argv[0] = typename;
83 
84 	/*
85 	 *	check for proper arguments
86 	 */
87 
88 	while ((cc = getopt(argc, argv, "o:rmOq")) != -1)
89 		switch (cc) {
90 		case 'r':
91 			if (flags & MS_RDONLY)
92 				errflag = 1;
93 			else
94 				flags |= MS_RDONLY;
95 			break;
96 		case 'O':
97 			flags |= MS_OVERLAY;
98 			break;
99 		case 'q':
100 			qflg = 1;
101 			break;
102 		case 'm':
103 			mflg++;
104 			break;
105 		case 'o':
106 			if (strlcpy(optbuf, optarg, sizeof (optbuf)) >=
107 			    sizeof (optbuf)) {
108 				(void) fprintf(stderr,
109 				    gettext("%s: Invalid argument: %s\n"),
110 				    myname, optarg);
111 				return (2);
112 			}
113 			optsize = strlen(optbuf);
114 			break;
115 		default:
116 		case '?':
117 			errflag = 1;
118 			break;
119 		}
120 
121 	/*
122 	 *	There must be at least 2 more arguments, the
123 	 *	special file and the directory.
124 	 */
125 
126 	if (((argc - optind) != 2) || (errflag))
127 		usage();
128 
129 	special = argv[optind++];
130 	mountp = argv[optind++];
131 
132 	/*
133 	 *	Perform the mount.
134 	 *	Only the low-order bit of "flags" is used by the system
135 	 *	calls (to denote read-only or read-write).
136 	 */
137 	if (mflg)
138 		flags |= MS_NOMNTTAB;
139 	do_mount(special, mountp, flags);
140 	exit(0);
141 	/* NOTREACHED */
142 }
143 
144 static void
rpterr(char * bs,char * mp)145 rpterr(char *bs, char *mp)
146 {
147 	switch (errno) {
148 	case EPERM:
149 		(void) fprintf(stderr,
150 		    gettext("%s: insufficient privileges\n"), myname);
151 		break;
152 	case ENXIO:
153 		(void) fprintf(stderr,
154 			gettext("%s: %s no such device\n"), myname, bs);
155 		break;
156 	case ENOTDIR:
157 		(void) fprintf(stderr,
158 		    gettext("%s: %s not a directory\n"
159 		    "\tor a component of %s is not a directory\n"),
160 			myname, mp, bs);
161 		break;
162 	case ENOENT:
163 		(void) fprintf(stderr,
164 			gettext("%s: %s or %s, no such file or directory\n"),
165 			myname, bs, mp);
166 		break;
167 	case EINVAL:
168 		(void) fprintf(stderr, gettext("%s: %s is not this fstype.\n"),
169 			myname, bs);
170 		break;
171 	case EBUSY:
172 		(void) fprintf(stderr,
173 			gettext("%s: %s is already mounted or %s is busy\n"),
174 			myname, bs, mp);
175 		break;
176 	case ENOTBLK:
177 		(void) fprintf(stderr, gettext("%s: %s not a block device\n"),
178 			myname, bs);
179 		break;
180 	case EROFS:
181 		(void) fprintf(stderr,
182 			gettext("%s: %s write-protected\n"), myname, bs);
183 		break;
184 	case ENOSPC:
185 		(void) fprintf(stderr,
186 			gettext("%s: the state of %s is not okay\n"
187 			    "\tand it was attempted to mount read/write\n"),
188 			myname, bs);
189 		break;
190 	default:
191 		perror(myname);
192 		(void) fprintf(stderr, gettext("%s: cannot mount %s\n"),
193 		    myname, bs);
194 	}
195 }
196 
197 
198 static void
do_mount(char * special,char * mountp,int rflag)199 do_mount(char *special, char *mountp, int rflag)
200 {
201 	char *savedoptbuf;
202 
203 	if ((savedoptbuf = strdup(optbuf)) == NULL) {
204 		(void) fprintf(stderr, gettext("%s: out of memory\n"),
205 		    myname);
206 		exit(2);
207 	}
208 	if (mount(special, mountp, rflag | MS_OPTIONSTR,
209 		fstype, NULL, 0, optbuf, MAX_MNTOPT_STR)) {
210 		rpterr(special, mountp);
211 		exit(2);
212 	}
213 	if (optsize && !qflg)
214 		cmp_requested_to_actual_options(savedoptbuf, optbuf,
215 		    special, mountp);
216 }
217 
218 
219 static void
usage(void)220 usage(void)
221 {
222 	(void) fprintf(stderr,
223 		gettext("Usage: %s [-rmOq] [-o specific_options]"
224 		" special mount_point\n"), myname);
225 	exit(1);
226 }
227