111 lines
4.0 KiB
Groff
111 lines
4.0 KiB
Groff
.\" Copyright (c) 1991 The Regents of the University of California.
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)pwd_mkdb.8 5.3 (Berkeley) 6/29/91
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.\"
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.TH PWD_MKDB 8 "June 29, 1991
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.UC 7
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.SH NAME
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pwd_mkdb \- generate the password databases
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.SH SYNOPSIS
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.nf
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.ft B
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pwd_mkdb [ \-p ] file
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.SH DESCRIPTION
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.I Pwd_mkdb
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creates
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.IR db (3)
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style secure and insecure databases for the specified file.
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These databases are then installed into ``/etc/spwd.db'' and
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``/etc/pwd.db'' respectively.
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The file is installed into ``/etc/master.passwd''.
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The file must be in the correct format (see
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.IR passwd (5)).
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It is important to note that the format used in this system is
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different from the historic Version 7 style format.
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.PP
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The options are as follows:
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.TP
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\-p
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Create a Version 7 style password file and install it into ``/etc/password''.
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.PP
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The two databases differ in that the secure version contains the user's
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encrypted password and the insecure version has an asterisk (``*'')
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.PP
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The databases are used by the C library password routines (see
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.IR getpwent (3)).
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.PP
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.I Pwd_mkdb
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exits zero on success, non-zero on failure.
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.SH FILES
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/var/db/pwd.db The insecure password database file
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.br
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/var/db/pwd.db.tmp A temporary file
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.br
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/var/db/spwd.db The secure password database file
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.br
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/var/db/spwd.db.tmp A temporary file
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.br
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/etc/master.passwd The current password file
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.br
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/etc/passwd A Version 7 format password file
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.SH BUGS
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Because of the necessity for atomic update of the password files,
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.I pwd_mkdb
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uses
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.IR rename (2)
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to install them.
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This, however, requires that the file specified on the command line live
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on the same file system as the ``/etc'' directory.
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.PP
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There are the obvious races with multiple people running
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.I pwd_mkdb
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on different password files at the same time.
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The front-ends to
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.IR pwd_mkdb ,
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.IR chpass (1),
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.IR passwd (1)
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and
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.IR vipw (8),
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handle the locking necessary to avoid this problem.
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.SH COMPATIBILITY
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Previous versions of the system had a program similar to
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.I pwd_mkdb,
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.IR mkpasswd (8),
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which built
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.I dbm (3)
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style databases for the password file but depended on the calling programs
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to install them.
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The program was renamed in order that previous users of the program
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not be surprised by the changes in functionality.
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.SH SEE ALSO
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chpass(1), passwd(1), db(3), getpwent(3), passwd(5), vipw(8)
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