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.
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.
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]
23 * Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
26 /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
27 /* All Rights Reserved */
30 * Portions of this source code were derived from Berkeley 4.3 BSD
31 * under license from the Regents of the University of California.
34 #include <sys/param.h>
35 #include <sys/isa_defs.h>
36 #include <sys/types.h>
37 #include <sys/sysmacros.h>
39 #include <sys/systm.h>
40 #include <sys/errno.h>
42 #include <sys/vnode.h>
44 #include <sys/fcntl.h>
47 #include <sys/mkdev.h>
48 #include <sys/policy.h>
49 #include <sys/debug.h>
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
58 mknodat(int fd
, char *fname
, mode_t fmode
, dev_t dev
)
67 * Zero type is equivalent to a regular file.
69 if ((fmode
& S_IFMT
) == 0)
73 * Must be privileged unless making a FIFO node.
75 if (((fmode
& S_IFMT
) != S_IFIFO
) && secpolicy_sys_devices(CRED()) != 0)
76 return (set_errno(EPERM
));
78 * Set up desired attributes and vn_create the file.
80 vattr
.va_type
= IFTOVT(fmode
);
81 vattr
.va_mode
= fmode
& MODEMASK
;
82 vattr
.va_mask
= VATTR_TYPE
|VATTR_MODE
;
83 if (vattr
.va_type
== VCHR
|| vattr
.va_type
== VBLK
) {
84 if (get_udatamodel() != DATAMODEL_NATIVE
)
86 if (dev
== NODEV
|| (getemajor(dev
)) == (major_t
)NODEV
)
87 return (set_errno(EINVAL
));
89 vattr
.va_mask
|= VATTR_RDEV
;
93 return (set_errno(EFAULT
));
94 if ((error
= fgetstartvp(fd
, fname
, &startvp
)) != 0)
95 return (set_errno(error
));
97 why
= ((fmode
& S_IFMT
) == S_IFDIR
) ? CRMKDIR
: CRMKNOD
;
98 error
= vn_createat(fname
, UIO_USERSPACE
, &vattr
, EXCL
, 0, &vp
,
99 why
, 0, PTOU(curproc
)->u_cmask
, startvp
);
103 return (set_errno(error
));