1.\" $OpenBSD: mkdir.2,v 1.7 2000/10/18 05:12:10 aaron Exp $ 2.\" $NetBSD: mkdir.2,v 1.8 1995/02/27 12:34:22 cgd Exp $ 3.\" 4.\" Copyright (c) 1983, 1991, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. All advertising materials mentioning features or use of this software 16.\" must display the following acknowledgement: 17.\" This product includes software developed by the University of 18.\" California, Berkeley and its contributors. 19.\" 4. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.\" @(#)mkdir.2 8.2 (Berkeley) 12/11/93 36.\" 37.Dd December 11, 1993 38.Dt MKDIR 2 39.Os 40.Sh NAME 41.Nm mkdir 42.Nd make a directory file 43.Sh SYNOPSIS 44.Fd #include <sys/types.h> 45.Fd #include <sys/stat.h> 46.Ft int 47.Fn mkdir "const char *path" "mode_t mode" 48.Sh DESCRIPTION 49The directory 50.Fa path 51is created with the access permissions specified by 52.Fa mode 53and restricted by the 54.Xr umask 2 55of the calling process. 56.Pp 57The directory's owner ID is set to the process's effective user ID. 58The directory's group ID is set to that of the parent directory in 59which it is created. 60.Sh RETURN VALUES 61A 0 return value indicates success. 62A \-1 return value indicates an error, and an error code is stored in 63.Va errno . 64.Sh ERRORS 65.Fn mkdir 66will fail and no directory will be created if: 67.Bl -tag -width Er 68.It Bq Er ENOTDIR 69A component of the path prefix is not a directory. 70.It Bq Er ENAMETOOLONG 71A component of a pathname exceeded 72.Dv {NAME_MAX} 73characters, or an entire path name exceeded 74.Dv {PATH_MAX} 75characters. 76.It Bq Er ENOENT 77A component of the path prefix does not exist. 78.It Bq Er EACCES 79Search permission is denied for a component of the path prefix. 80.It Bq Er ELOOP 81Too many symbolic links were encountered in translating the pathname. 82.It Bq Er EROFS 83The named file resides on a read-only file system. 84.It Bq Er EEXIST 85The named file exists. 86.It Bq Er ENOSPC 87The new directory cannot be created because there is no space left 88on the file system that will contain the directory. 89.It Bq Er ENOSPC 90There are no free inodes on the file system on which the 91directory is being created. 92.It Bq Er EDQUOT 93The new directory cannot be created because the user's 94quota of disk blocks on the file system that will 95contain the directory has been exhausted. 96.It Bq Er EDQUOT 97The user's quota of inodes on the file system on 98which the directory is being created has been exhausted. 99.It Bq Er EIO 100An I/O error occurred while making the directory entry or allocating the inode. 101.It Bq Er EIO 102An I/O error occurred while reading from or writing to the file system. 103.It Bq Er EFAULT 104.Fa path 105points outside the process's allocated address space. 106.El 107.Sh SEE ALSO 108.Xr chmod 2 , 109.Xr stat 2 , 110.Xr umask 2 111.Sh STANDARDS 112The 113.Fn mkdir 114function conforms to 115.St -p1003.1-88 . 116