1.\" Copyright (c) 1990, 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. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)strmode.3 8.3 (Berkeley) 7/28/94 29.\" 30.Dd July 28, 1994 31.Dt STRMODE 3 32.Os 33.Sh NAME 34.Nm strmode 35.Nd convert inode status information into a symbolic string 36.Sh LIBRARY 37.Lb libc 38.Sh SYNOPSIS 39.In string.h 40.Ft void 41.Fn strmode "mode_t mode" "char *bp" 42.Sh DESCRIPTION 43The 44.Fn strmode 45function 46converts a file 47.Fa mode 48(the type and permission information associated with an inode, see 49.Xr stat 2 ) 50into a symbolic string which is stored in the location referenced by 51.Fa bp . 52This stored string is eleven characters in length plus a trailing 53.Dv NUL . 54.Pp 55The first character is the inode type, and will be one of the following: 56.Pp 57.Bl -tag -width flag -offset indent -compact 58.It \- 59regular file 60.It b 61block special 62.It c 63character special 64.It d 65directory 66.It l 67symbolic link 68.It p 69fifo 70.It s 71socket 72.It w 73whiteout 74.It ? 75unknown inode type 76.El 77.Pp 78The next nine characters encode three sets of permissions, in three 79characters each. 80The first three characters are the permissions for the owner of the 81file, the second three for the group the file belongs to, and the 82third for the ``other'', or default, set of users. 83.Pp 84Permission checking is done as specifically as possible. 85If read permission is denied to the owner of a file in the first set 86of permissions, the owner of the file will not be able to read the file. 87This is true even if the owner is in the file's group and the group 88permissions allow reading or the ``other'' permissions allow reading. 89.Pp 90If the first character of the three character set is an ``r'', the file is 91readable for that set of users; if a dash ``\-'', it is not readable. 92.Pp 93If the second character of the three character set is a ``w'', the file is 94writable for that set of users; if a dash ``\-'', it is not writable. 95.Pp 96The third character is the first of the following characters that apply: 97.Bl -tag -width xxxx 98.It S 99If the character is part of the owner permissions and the file is not 100executable or the directory is not searchable by the owner, and the 101set-user-id bit is set. 102.It S 103If the character is part of the group permissions and the file is not 104executable or the directory is not searchable by the group, and the 105set-group-id bit is set. 106.It T 107If the character is part of the other permissions and the file is not 108executable or the directory is not searchable by others, and the ``sticky'' 109.Pq Dv S_ISVTX 110bit is set. 111.It s 112If the character is part of the owner permissions and the file is 113executable or the directory searchable by the owner, and the set-user-id 114bit is set. 115.It s 116If the character is part of the group permissions and the file is 117executable or the directory searchable by the group, and the set-group-id 118bit is set. 119.It t 120If the character is part of the other permissions and the file is 121executable or the directory searchable by others, and the ``sticky'' 122.Pq Dv S_ISVTX 123bit is set. 124.It x 125The file is executable or the directory is searchable. 126.It \- 127None of the above apply. 128.El 129.Pp 130The last character will always be a space. 131.Sh SEE ALSO 132.Xr chmod 1 , 133.Xr find 1 , 134.Xr stat 2 , 135.Xr getmode 3 , 136.Xr setmode 3 137.Sh HISTORY 138The 139.Fn strmode 140function first appeared in 141.Bx 4.4 . 142