1.\" Copyright (c) 1983, 1991 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)mkdir.2 6.7 (Berkeley) 3/10/91 33.\" $Id: mkdir.2,v 1.7 1994/04/22 00:13:37 jtc Exp $ 34.\" 35.Dd March 10, 1991 36.Dt MKDIR 2 37.Os BSD 4.2 38.Sh NAME 39.Nm mkdir 40.Nd make a directory file 41.Sh SYNOPSIS 42.Fd #include <sys/types.h> 43.Fd #include <sys/stat.h> 44.Ft int 45.Fn mkdir "const char *path" "mode_t mode" 46.Sh DESCRIPTION 47The directory 48.Fa path 49is created with the access permissions specified by 50.Fa mode 51and restricted by the the 52.Xr umask 2 53of the calling process. 54.Pp 55The directory's owner ID is set to the process's effective user ID. 56The directory's group ID is set to that of the parent directory in 57which it is created. 58.Sh RETURN VALUES 59A 0 return value indicates success. A -1 return value 60indicates an error, and an error code is stored in 61.Va errno . 62.Sh ERRORS 63.Fn Mkdir 64will fail and no directory will be created if: 65.Bl -tag -width Er 66.It Bq Er ENOTDIR 67A component of the path prefix is not a directory. 68.It Bq Er ENAMETOOLONG 69A component of a pathname exceeded 70.Dv {NAME_MAX} 71characters, or an entire path name exceeded 72.Dv {PATH_MAX} 73characters. 74.It Bq Er ENOENT 75A component of the path prefix does not exist. 76.It Bq Er EACCES 77Search permission is denied for a component of the path prefix. 78.It Bq Er ELOOP 79Too many symbolic links were encountered in translating the pathname. 80.It Bq Er EROFS 81The named file resides on a read-only file system. 82.It Bq Er EEXIST 83The named file exists. 84.It Bq Er ENOSPC 85The directory in which the entry for the new directory is being placed 86cannot be extended because there is no space left on the file 87system containing the directory. 88.It Bq Er ENOSPC 89The new directory cannot be created because there 90there is no space left on the file 91system that will contain the directory. 92.It Bq Er ENOSPC 93There are no free inodes on the file system on which the 94directory is being created. 95.It Bq Er EDQUOT 96The directory in which the entry for the new directory 97is being placed cannot be extended because the 98user's quota of disk blocks on the file system 99containing the directory has been exhausted. 100.It Bq Er EDQUOT 101The new directory cannot be created because the user's 102quota of disk blocks on the file system that will 103contain the directory has been exhausted. 104.It Bq Er EDQUOT 105The user's quota of inodes on the file system on 106which the directory is being created has been exhausted. 107.It Bq Er EIO 108An I/O error occurred while making the directory entry or allocating the inode. 109.It Bq Er EIO 110An I/O error occurred while reading from or writing to the file system. 111.It Bq Er EFAULT 112.Fa Path 113points outside the process's allocated address space. 114.El 115.Sh SEE ALSO 116.Xr chmod 2 , 117.Xr stat 2 , 118.Xr umask 2 119.Sh STANDARDS 120The 121.Fn mkdir 122function conforms to 123.St -p1003.1-88 . 124