xref: /illumos-gate/usr/src/uts/common/syscall/mkdir.c (revision 66582b606a8194f7f3ba5b3a3a6dca5b0d346361)
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 /*
23  * Copyright (c) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
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 #include <sys/param.h>
35 #include <sys/isa_defs.h>
36 #include <sys/types.h>
37 #include <sys/sysmacros.h>
38 #include <sys/systm.h>
39 #include <sys/user.h>
40 #include <sys/errno.h>
41 #include <sys/vnode.h>
42 #include <sys/file.h>
43 #include <sys/fcntl.h>
44 #include <sys/uio.h>
45 #include <sys/debug.h>
46 #include <c2/audit.h>
47 
48 /*
49  * Make a directory.
50  */
51 int
52 mkdirat(int fd, char *dname, int dmode)
53 {
54 	vnode_t *startvp;
55 	vnode_t *vp;
56 	struct vattr vattr;
57 	int error;
58 
59 	vattr.va_type = VDIR;
60 	vattr.va_mode = dmode & PERMMASK;
61 	vattr.va_mask = AT_TYPE|AT_MODE;
62 
63 	if (dname == NULL)
64 		return (set_errno(EFAULT));
65 	if ((error = fgetstartvp(fd, dname, &startvp)) != 0)
66 		return (set_errno(error));
67 	if (AU_AUDITING() && startvp != NULL)
68 		audit_setfsat_path(1);
69 
70 	error = vn_createat(dname, UIO_USERSPACE, &vattr, EXCL, 0, &vp,
71 	    CRMKDIR, 0, PTOU(curproc)->u_cmask, startvp);
72 	if (startvp != NULL)
73 		VN_RELE(startvp);
74 	if (error)
75 		return (set_errno(error));
76 	VN_RELE(vp);
77 	return (0);
78 }
79 
80 int
81 mkdir(char *dname, int dmode)
82 {
83 	return (mkdirat(AT_FDCWD, dname, dmode));
84 }
85