devnodes.c revision 1.2 1 /* $NetBSD: devnodes.c,v 1.2 2009/12/03 15:06:04 pooka Exp $ */
2
3 /*
4 * Copyright (c) 2009 Antti Kantee. All Rights Reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: devnodes.c,v 1.2 2009/12/03 15:06:04 pooka Exp $");
30
31 #include <sys/param.h>
32 #include <sys/device.h>
33 #include <sys/filedesc.h>
34 #include <sys/kmem.h>
35 #include <sys/lwp.h>
36 #include <sys/stat.h>
37 #include <sys/vfs_syscalls.h>
38
39 #include "rump_vfs_private.h"
40
41 /* realqvik(tm) "devfs" */
42 int
43 rump_vfs_makedevnodes(dev_t devtype, const char *basename, char minchar,
44 devmajor_t maj, devminor_t minnum, int nnodes)
45 {
46 int error;
47 char *devname, *p;
48 size_t devlen;
49 register_t retval;
50
51 devlen = strlen(basename) + 1 + 1; /* +letter +0 */
52 devname = kmem_zalloc(devlen, KM_SLEEP);
53 strlcpy(devname, basename, devlen);
54 p = devname + devlen-2;
55
56 for (; nnodes > 0; nnodes--, minchar++, minnum++) {
57 KASSERT(minchar <= 'z');
58 *p = minchar;
59
60 if ((error = do_sys_mknod(curlwp, devname, 0666 | devtype,
61 makedev(maj, minnum), &retval, UIO_SYSSPACE)))
62 goto out;
63 }
64
65 out:
66 kmem_free(devname, devlen);
67 return error;
68 }
69