1 /* $NetBSD: devnodes.c,v 1.4 2009/12/17 00:29:46 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 1.4 2009/12/17 00:29:46 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_makeonedevnode(dev_t devtype, const char *devname, 44 devmajor_t majnum, devminor_t minnum) 45 { 46 register_t retval; 47 48 return do_sys_mknod(curlwp, devname, 0666 | devtype, 49 makedev(majnum, minnum), &retval, UIO_SYSSPACE); 50 } 51 52 int 53 rump_vfs_makedevnodes(dev_t devtype, const char *basename, char minchar, 54 devmajor_t maj, devminor_t minnum, int nnodes) 55 { 56 int error = 0; 57 char *devname, *p; 58 size_t devlen; 59 register_t retval; 60 61 devlen = strlen(basename) + 1 + 1; /* +letter +0 */ 62 devname = kmem_zalloc(devlen, KM_SLEEP); 63 strlcpy(devname, basename, devlen); 64 p = devname + devlen-2; 65 66 for (; nnodes > 0; nnodes--, minchar++, minnum++) { 67 KASSERT(minchar <= 'z'); 68 *p = minchar; 69 70 if ((error = do_sys_mknod(curlwp, devname, 0666 | devtype, 71 makedev(maj, minnum), &retval, UIO_SYSSPACE))) 72 goto out; 73 } 74 75 out: 76 kmem_free(devname, devlen); 77 return error; 78 } 79