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) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * Portions of this source code were derived from Berkeley 4.3 BSD 32 * under license from the Regents of the University of California. 33 */ 34 35 #pragma ident "%Z%%M% %I% %E% SMI" 36 37 #include <sys/param.h> 38 #include <sys/isa_defs.h> 39 #include <sys/types.h> 40 #include <sys/sysmacros.h> 41 #include <sys/user.h> 42 #include <sys/systm.h> 43 #include <sys/errno.h> 44 #include <sys/stat.h> 45 #include <sys/vnode.h> 46 #include <sys/mode.h> 47 #include <sys/uio.h> 48 #include <sys/mkdev.h> 49 #include <sys/policy.h> 50 #include <sys/debug.h> 51 52 /* 53 * Create a special file, a regular file, or a FIFO. 54 * fname - pathname passed by user 55 * fmode - mode of pathname 56 * dev = device number - b/c specials only 57 */ 58 int 59 mknod(char *fname, mode_t fmode, dev_t dev) 60 { 61 vnode_t *vp; 62 struct vattr vattr; 63 int error; 64 enum create why; 65 66 /* 67 * Zero type is equivalent to a regular file. 68 */ 69 if ((fmode & S_IFMT) == 0) 70 fmode |= S_IFREG; 71 72 /* 73 * Must be privileged unless making a FIFO node. 74 */ 75 if (((fmode & S_IFMT) != S_IFIFO) && secpolicy_sys_devices(CRED()) != 0) 76 return (set_errno(EPERM)); 77 /* 78 * Set up desired attributes and vn_create the file. 79 */ 80 vattr.va_type = IFTOVT(fmode); 81 vattr.va_mode = fmode & MODEMASK; 82 vattr.va_mask = AT_TYPE|AT_MODE; 83 if (vattr.va_type == VCHR || vattr.va_type == VBLK) { 84 if (get_udatamodel() != DATAMODEL_NATIVE) 85 dev = expldev(dev); 86 if (dev == NODEV || (getemajor(dev)) == (major_t)NODEV) 87 return (set_errno(EINVAL)); 88 vattr.va_rdev = dev; 89 vattr.va_mask |= AT_RDEV; 90 } 91 why = ((fmode & S_IFMT) == S_IFDIR) ? CRMKDIR : CRMKNOD; 92 if (error = vn_create(fname, UIO_USERSPACE, &vattr, EXCL, 0, &vp, 93 why, 0, u.u_cmask)) 94 return (set_errno(error)); 95 VN_RELE(vp); 96 return (0); 97 } 98 99 #if defined(__i386) || defined(__i386_COMPAT) 100 101 /*ARGSUSED*/ 102 int 103 xmknod(int version, char *fname, mode_t fmode, dev_t dev) 104 { 105 return (mknod(fname, fmode, dev)); 106 } 107 108 #endif 109