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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 /* 30 * Portions of this source code were derived from Berkeley 4.3 BSD 31 * under license from the Regents of the University of California. 32 */ 33 34 #pragma ident "%Z%%M% %I% %E% SMI" 35 36 #include <sys/param.h> 37 #include <sys/isa_defs.h> 38 #include <sys/types.h> 39 #include <sys/sysmacros.h> 40 #include <sys/user.h> 41 #include <sys/systm.h> 42 #include <sys/errno.h> 43 #include <sys/stat.h> 44 #include <sys/vnode.h> 45 #include <sys/mode.h> 46 #include <sys/uio.h> 47 #include <sys/mkdev.h> 48 #include <sys/policy.h> 49 #include <sys/debug.h> 50 51 /* 52 * Create a special file, a regular file, or a FIFO. 53 * fname - pathname passed by user 54 * fmode - mode of pathname 55 * dev = device number - b/c specials only 56 */ 57 int 58 mknod(char *fname, mode_t fmode, dev_t dev) 59 { 60 vnode_t *vp; 61 struct vattr vattr; 62 int error; 63 enum create why; 64 65 /* 66 * Zero type is equivalent to a regular file. 67 */ 68 if ((fmode & S_IFMT) == 0) 69 fmode |= S_IFREG; 70 71 /* 72 * Must be privileged unless making a FIFO node. 73 */ 74 if (((fmode & S_IFMT) != S_IFIFO) && secpolicy_sys_devices(CRED()) != 0) 75 return (set_errno(EPERM)); 76 /* 77 * Set up desired attributes and vn_create the file. 78 */ 79 vattr.va_type = IFTOVT(fmode); 80 vattr.va_mode = fmode & MODEMASK; 81 vattr.va_mask = AT_TYPE|AT_MODE; 82 if (vattr.va_type == VCHR || vattr.va_type == VBLK) { 83 if (get_udatamodel() != DATAMODEL_NATIVE) 84 dev = expldev(dev); 85 if (dev == NODEV || (getemajor(dev)) == (major_t)NODEV) 86 return (set_errno(EINVAL)); 87 vattr.va_rdev = dev; 88 vattr.va_mask |= AT_RDEV; 89 } 90 why = ((fmode & S_IFMT) == S_IFDIR) ? CRMKDIR : CRMKNOD; 91 if (error = vn_create(fname, UIO_USERSPACE, &vattr, EXCL, 0, &vp, 92 why, 0, PTOU(curproc)->u_cmask)) 93 return (set_errno(error)); 94 VN_RELE(vp); 95 return (0); 96 } 97 98 #if defined(__i386) || defined(__i386_COMPAT) 99 100 /*ARGSUSED*/ 101 int 102 xmknod(int version, char *fname, mode_t fmode, dev_t dev) 103 { 104 return (mknod(fname, fmode, dev)); 105 } 106 107 #endif 108