1.\" Copyright (c) 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.\" @(#)pwd_mkdb.8 8.1 (Berkeley) 6/6/93 33.\" 34.Dd June 6, 1993 35.Dt PWD_MKDB 8 36.Os 37.Sh NAME 38.Nm pwd_mkdb 39.Nd "generate the password databases" 40.Sh SYNOPSIS 41.Nm pwd_mkdb 42.Op Fl p 43.Ar file 44.Sh DESCRIPTION 45.Nm Pwd_mkdb 46creates 47.Xr db 3 48style secure and insecure databases for the specified file. 49These databases are then installed into 50.Dq Pa /etc/spwd.db 51and 52.Dq Pa /etc/pwd.db 53respectively. 54The file is installed into 55.Dq Pa /etc/master.passwd . 56The file must be in the correct format (see 57.Xr passwd 5 ) . 58It is important to note that the format used in this system is 59different from the historic Version 7 style format. 60.Pp 61The options are as follows: 62.Bl -tag -width flag 63.It Fl p 64Create a Version 7 style password file and install it into 65.Dq Pa /etc/passwd . 66.El 67.Pp 68The two databases differ in that the secure version contains the user's 69encrypted password and the insecure version has an asterisk (``*'') 70.Pp 71The databases are used by the C library password routines (see 72.Xr getpwent 3 ) . 73.Pp 74.Nm Pwd_mkdb 75exits zero on success, non-zero on failure. 76.Sh FILES 77.Bl -tag -width Pa -compact 78.It Pa /var/db/pwd.db 79The insecure password database file. 80.It Pa /var/db/pwd.db.tmp 81A temporary file. 82.It Pa /var/db/spwd.db 83The secure password database file. 84.It Pa /var/db/spwd.db.tmp 85A temporary file. 86.It Pa /etc/master.passwd 87The current password file. 88.It Pa /etc/passwd 89A Version 7 format password file. 90.El 91.Sh BUGS 92Because of the necessity for atomic update of the password files, 93.Nm pwd_mkdb 94uses 95.Xr rename 2 96to install them. 97This, however, requires that the file specified on the command line live 98on the same file system as the 99.Dq Pa /etc 100directory. 101.Pp 102There are the obvious races with multiple people running 103.Nm pwd_mkdb 104on different password files at the same time. 105The front-ends to 106.Nm pwd_mkdb , 107.Xr chpass 1 , 108.Xr passwd 1 109and 110.Xr vipw 8 , 111handle the locking necessary to avoid this problem. 112.Sh COMPATIBILITY 113Previous versions of the system had a program similar to 114.Nm pwd_mkdb , 115.Xr mkpasswd 8 , 116which built 117.Xr dbm 3 118style databases for the password file but depended on the calling programs 119to install them. 120The program was renamed in order that previous users of the program 121not be surprised by the changes in functionality. 122.Sh SEE ALSO 123.Xr chpass 1 , 124.Xr passwd 1 , 125.Xr db 3 , 126.Xr getpwent 3 , 127.Xr passwd 5 , 128.Xr vipw 8 129