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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
#include <sys/param.h>
#include <sys/isa_defs.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/user.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/fcntl.h>
#include <sys/mode.h>
#include <sys/uio.h>
#include <sys/mkdev.h>
#include <sys/policy.h>
#include <sys/debug.h>
#include <c2/audit.h>
/*
* Create a special file, a regular file, or a FIFO.
* fname - pathname passed by user
* fmode - mode of pathname
* dev = device number - b/c specials only
*/
int
mknodat(int fd, char *fname, mode_t fmode, dev_t dev)
{
vnode_t *startvp;
vnode_t *vp;
struct vattr vattr;
int error;
enum create why;
/*
* Zero type is equivalent to a regular file.
*/
if ((fmode & S_IFMT) == 0)
fmode |= S_IFREG;
/*
* Must be privileged unless making a FIFO node.
*/
if (((fmode & S_IFMT) != S_IFIFO) && secpolicy_sys_devices(CRED()) != 0)
return (set_errno(EPERM));
/*
* Set up desired attributes and vn_create the file.
*/
vattr.va_type = IFTOVT(fmode);
vattr.va_mode = fmode & MODEMASK;
vattr.va_mask = AT_TYPE|AT_MODE;
if (vattr.va_type == VCHR || vattr.va_type == VBLK) {
if (get_udatamodel() != DATAMODEL_NATIVE)
dev = expldev(dev);
if (dev == NODEV || (getemajor(dev)) == (major_t)NODEV)
return (set_errno(EINVAL));
vattr.va_rdev = dev;
vattr.va_mask |= AT_RDEV;
}
if (fname == NULL)
return (set_errno(EFAULT));
if ((error = fgetstartvp(fd, fname, &startvp)) != 0)
return (set_errno(error));
if (AU_AUDITING() && startvp != NULL)
audit_setfsat_path(1);
why = ((fmode & S_IFMT) == S_IFDIR) ? CRMKDIR : CRMKNOD;
error = vn_createat(fname, UIO_USERSPACE, &vattr, EXCL, 0, &vp,
why, 0, PTOU(curproc)->u_cmask, startvp);
if (startvp != NULL)
VN_RELE(startvp);
if (error)
return (set_errno(error));
VN_RELE(vp);
return (0);
}
int
mknod(char *fname, mode_t fmode, dev_t dev)
{
return (mknodat(AT_FDCWD, fname, fmode, dev));
}
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