1.\" $NetBSD: mkdir.2,v 1.24 2010/05/31 12:16:20 njoly Exp $ 2.\" 3.\" Copyright (c) 1983, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)mkdir.2 8.2 (Berkeley) 12/11/93 31.\" 32.Dd December 27, 2005 33.Dt MKDIR 2 34.Os 35.Sh NAME 36.Nm mkdir 37.Nd make a directory file 38.Sh LIBRARY 39.Lb libc 40.Sh SYNOPSIS 41.In sys/stat.h 42.Ft int 43.Fn mkdir "const char *path" "mode_t mode" 44.Sh DESCRIPTION 45The directory 46.Fa path 47is created with the access permissions specified by 48.Fa mode 49and restricted by the 50.Xr umask 2 51of the calling process. 52.Pp 53The directory's owner ID is set to the process's effective user ID. 54The directory's group ID is set to that of the parent directory in 55which it is created. 56.Sh RETURN VALUES 57A 0 return value indicates success. 58A \-1 return value indicates an error, and an error code is stored in 59.Va errno . 60.Sh ERRORS 61.Fn mkdir 62will fail and no directory will be created if: 63.Bl -tag -width Er 64.It Bq Er ENOTDIR 65A component of the path prefix is not a directory. 66.It Bq Er ENAMETOOLONG 67A component of a pathname exceeded 68.Brq Dv NAME_MAX 69characters, or an entire path name exceeded 70.Brq Dv PATH_MAX 71characters. 72.It Bq Er ENOENT 73A component of the path prefix does not exist. 74.It Bq Er EACCES 75Search permission is denied for a component of the path prefix. 76.It Bq Er ELOOP 77Too many symbolic links were encountered in translating the pathname. 78.It Bq Er EROFS 79The named file resides on a read-only file system. 80.It Bq Er EEXIST 81The named file exists. 82.It Bq Er ENOSPC 83The new directory cannot be created because there is no space left 84on the file system that will contain the directory. 85.It Bq Er ENOSPC 86There are no free inodes on the file system on which the 87directory is being created. 88.It Bq Er EDQUOT 89The new directory cannot be created because the user's 90quota of disk blocks on the file system that will 91contain the directory has been exhausted. 92.It Bq Er EDQUOT 93The user's quota of inodes on the file system on 94which the directory is being created has been exhausted. 95.It Bq Er EIO 96An I/O error occurred while making the directory entry or allocating the inode. 97.It Bq Er EIO 98An I/O error occurred while reading from or writing to the file system. 99.It Bq Er EFAULT 100.Fa path 101points outside the process's allocated address space. 102.El 103.Sh SEE ALSO 104.Xr chmod 2 , 105.Xr stat 2 , 106.Xr umask 2 107.Sh STANDARDS 108The 109.Fn mkdir 110function conforms to 111.St -p1003.1-90 . 112