DEVFS - Add support for wildcard link rules
[dragonfly.git] / sbin / mount_devfs / mount_devfs.c
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1/*
2 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Alex Hornung <ahornung@gmail.com>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34#include <sys/param.h>
35#include <sys/mount.h>
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36#if 0
37#include <vfs/devfs/devfs.h>
38#endif
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39
40#include <err.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44#include <sysexits.h>
45#include <unistd.h>
46
47#include "mntopts.h"
48
49struct mntopt mopts[] = {
50 MOPT_STDOPTS,
51 MOPT_NULL
52};
53
54static void usage(void);
55
56int
57main(int argc, char **argv)
58{
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59 /*
60 * XXX: The type of args definitely should NOT be int, change whenever
61 * we need real arguments passed on to vfs_mount() in devfs
62 */
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63 int args;
64 int ch, mntflags;
65 char mntpoint[MAXPATHLEN];
8a8b36eb 66 /* char target[MAXPATHLEN]; */
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67 struct vfsconf vfc;
68 int error;
69
8a8b36eb 70 /* XXX: Handle some real mountflags, e.g. UPDATE... */
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71 mntflags = 0;
72
8a8b36eb 73 /* XXX: add support for some real options to mount_devfs */
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74 while ((ch = getopt(argc, argv, "o:")) != -1)
75 switch(ch) {
76 case 'o':
77 getmntopts(optarg, mopts, &mntflags, 0);
78 break;
79 case '?':
80 default:
81 usage();
82 }
83 argc -= optind;
84 argv += optind;
85
86 if (argc < 1)
87 usage();
88
89 /* resolve mount point with realpath(3) */
90 checkpath(argv[0], mntpoint);
91
92
93 error = getvfsbyname("devfs", &vfc);
94 if (error && vfsisloadable("devfs")) {
95 if(vfsload("devfs"))
96 err(EX_OSERR, "vfsload(devfs)");
97 endvfsent();
98 error = getvfsbyname("devfs", &vfc);
99 }
100 if (error)
101 errx(EX_OSERR, "devfs filesystem is not available");
102
8a8b36eb 103 /* XXX: put something useful in args or get rid of it! */
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104 if (mount(vfc.vfc_name, mntpoint, mntflags, &args))
105 err(1, NULL);
106 exit(0);
107}
108
109static void
110usage(void)
111{
112 fprintf(stderr,
113 "usage: mount_devfs [-o options] mount_point\n");
114 exit(1);
115}