1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. 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.\" @(#)mkdir.2 8.2 (Berkeley) 12/11/93 33.\" $FreeBSD$ 34.\" 35.Dd December 11, 1993 36.Dt MKDIR 2 37.Os 38.Sh NAME 39.Nm mkdir 40.Nd make a directory file 41.Sh LIBRARY 42.Lb libc 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. A -1 return value 62indicates 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 255 characters, 72or an entire path name exceeded 1023 characters. 73.It Bq Er ENOENT 74A component of the path prefix does not exist. 75.It Bq Er EACCES 76Search permission is denied for a component of the path prefix, 77or write permission is denied 78on the parent directory of the directory to be created. 79.It Bq Er ELOOP 80Too many symbolic links were encountered in translating the pathname. 81.It Bq Er EROFS 82The named file resides on a read-only file system. 83.It Bq Er EEXIST 84The named file exists. 85.It Bq Er ENOSPC 86The new directory cannot be created because there is no space left 87on the file system that will contain the directory. 88.It Bq Er ENOSPC 89There are no free inodes on the file system on which the 90directory is being created. 91.It Bq Er EDQUOT 92The new directory cannot be created because the user's 93quota of disk blocks on the file system that will 94contain the directory has been exhausted. 95.It Bq Er EDQUOT 96The user's quota of inodes on the file system on 97which the directory is being created has been exhausted. 98.It Bq Er EIO 99An I/O error occurred while making the directory entry or allocating the inode. 100.It Bq Er EIO 101An I/O error occurred while reading from or writing to the file system. 102.It Bq Er EFAULT 103.Fa Path 104points outside the process's allocated address space. 105.El 106.Sh SEE ALSO 107.Xr chmod 2 , 108.Xr stat 2 , 109.Xr umask 2 110.Sh STANDARDS 111The 112.Fn mkdir 113function call is expected to conform to 114.St -p1003.1-90 . 115