| | 1 | .\" $NetBSD: mknod.2,v 1.6 1995/02/27 12:34:33 cgd Exp $ |
| | 2 | .\" |
| | 3 | .\" Copyright (c) 1980, 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. All advertising materials mentioning features or use of this software |
| | 15 | .\" must display the following acknowledgement: |
| | 16 | .\" This product includes software developed by the University of |
| | 17 | .\" California, Berkeley and its contributors. |
| | 18 | .\" 4. Neither the name of the University nor the names of its contributors |
| | 19 | .\" may be used to endorse or promote products derived from this software |
| | 20 | .\" without specific prior written permission. |
| | 21 | .\" |
| | 22 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 23 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 24 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 25 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 26 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 27 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 28 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 29 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 30 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 31 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 32 | .\" SUCH DAMAGE. |
| | 33 | .\" |
| | 34 | .\" @(#)mknod.2 8.1 (Berkeley) 6/4/93 |
| | 35 | .\" |
| | 36 | .Dd June 4, 1993 |
| | 37 | .Dt MKNOD 2 |
| | 38 | .Os BSD 4 |
| | 39 | .Sh NAME |
| | 40 | .Nm mknod |
| | 41 | .Nd make a special file node |
| | 42 | .Sh SYNOPSIS |
| | 43 | .Fd #include <unistd.h> |
| | 44 | .Ft int |
| | 45 | .Fn mknod "const char *path" "mode_t mode" "dev_t dev" |
| | 46 | .Sh DESCRIPTION |
| | 47 | The device special file |
| | 48 | .Fa path |
| | 49 | is created with the major and minor |
| | 50 | device numbers extracted from |
| | 51 | .Fa mode. |
| | 52 | The access permissions of |
| | 53 | .Fa path |
| | 54 | are descendant from the |
| | 55 | .Xr umask 2 |
| | 56 | of the parent process. |
| | 57 | .Pp |
| | 58 | If |
| | 59 | .Fa mode |
| | 60 | indicates a block or character special file, |
| | 61 | .Fa dev |
| | 62 | is a configuration dependent specification of a character or block |
| | 63 | I/O device and the superblock of the device. If |
| | 64 | .Fa mode |
| | 65 | does not indicate a block special or character special device, |
| | 66 | .Fa dev |
| | 67 | is ignored. |
| | 68 | .Pp |
| | 69 | .Fn Mknod |
| | 70 | requires super-user privileges. |
| | 71 | .Sh RETURN VALUES |
| | 72 | Upon successful completion a value of 0 is returned. |
| | 73 | Otherwise, a value of -1 is returned and |
| | 74 | .Va errno |
| | 75 | is set to indicate the error. |
| | 76 | .Sh ERRORS |
| | 77 | .Fn Mknod |
| | 78 | will fail and the file will be not created if: |
| | 79 | .Bl -tag -width Er |
| | 80 | .It Bq Er ENOTDIR |
| | 81 | A component of the path prefix is not a directory. |
| | 82 | .It Bq Er ENAMETOOLONG |
| | 83 | A component of a pathname exceeded |
| | 84 | .Dv {NAME_MAX} |
| | 85 | characters, or an entire path name exceeded |
| | 86 | .Dv {PATH_MAX} |
| | 87 | characters. |
| | 88 | .It Bq Er ENOENT |
| | 89 | A component of the path prefix does not exist. |
| | 90 | .It Bq Er EACCES |
| | 91 | Search permission is denied for a component of the path prefix. |
| | 92 | .It Bq Er ELOOP |
| | 93 | Too many symbolic links were encountered in translating the pathname. |
| | 94 | .It Bq Er EPERM |
| | 95 | The process's effective user ID is not super-user. |
| | 96 | .It Bq Er EIO |
| | 97 | An I/O error occurred while making the directory entry or allocating the inode. |
| | 98 | .It Bq Er ENOSPC |
| | 99 | The directory in which the entry for the new node is being placed |
| | 100 | cannot be extended because there is no space left on the file |
| | 101 | system containing the directory. |
| | 102 | .It Bq Er ENOSPC |
| | 103 | There are no free inodes on the file system on which the |
| | 104 | node is being created. |
| | 105 | .It Bq Er EDQUOT |
| | 106 | The directory in which the entry for the new node |
| | 107 | is being placed cannot be extended because the |
| | 108 | user's quota of disk blocks on the file system |
| | 109 | containing the directory has been exhausted. |
| | 110 | .It Bq Er EDQUOT |
| | 111 | The user's quota of inodes on the file system on |
| | 112 | which the node is being created has been exhausted. |
| | 113 | .It Bq Er EROFS |
| | 114 | The named file resides on a read-only file system. |
| | 115 | .It Bq Er EEXIST |
| | 116 | The named file exists. |
| | 117 | .It Bq Er EFAULT |
| | 118 | .Fa Path |
| | 119 | points outside the process's allocated address space. |
| | 120 | .El |
| | 121 | .Sh SEE ALSO |
| | 122 | .Xr chmod 2 , |
| | 123 | .Xr stat 2 , |
| | 124 | .Xr umask 2 |
| | 125 | .Sh HISTORY |
| | 126 | A |
| | 127 | .Fn mknod |
| | 128 | function call appeared in |
| | 129 | .At v6 . |
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