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1 | .\" Copyright (c) 1991 The Regents of the University of California. |
2 | .\" All rights reserved. | |
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5 | .\" modification, are permitted provided that the following conditions | |
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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. | |
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20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
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32 | .\" @(#)pwd_mkdb.8 5.3 (Berkeley) 6/29/91 | |
33 | .\" | |
34 | .TH PWD_MKDB 8 "June 29, 1991 | |
35 | .UC 7 | |
36 | .SH NAME | |
37 | pwd_mkdb \- generate the password databases | |
38 | .SH SYNOPSIS | |
39 | .nf | |
40 | .ft B | |
41 | pwd_mkdb [ \-p ] file | |
42 | .SH DESCRIPTION | |
43 | .I Pwd_mkdb | |
44 | creates | |
45 | .IR db (3) | |
46 | style secure and insecure databases for the specified file. | |
47 | These databases are then installed into ``/etc/spwd.db'' and | |
48 | ``/etc/pwd.db'' respectively. | |
49 | The file is installed into ``/etc/master.passwd''. | |
50 | The file must be in the correct format (see | |
51 | .IR passwd (5)). | |
52 | It is important to note that the format used in this system is | |
53 | different from the historic Version 7 style format. | |
54 | .PP | |
55 | The options are as follows: | |
56 | .TP | |
57 | \-p | |
58 | Create a Version 7 style password file and install it into ``/etc/password''. | |
59 | .PP | |
60 | The two databases differ in that the secure version contains the user's | |
61 | encrypted password and the insecure version has an asterisk (``*'') | |
62 | .PP | |
63 | The databases are used by the C library password routines (see | |
64 | .IR getpwent (3)). | |
65 | .PP | |
66 | .I Pwd_mkdb | |
67 | exits zero on success, non-zero on failure. | |
68 | .SH FILES | |
69 | /var/db/pwd.db The insecure password database file | |
70 | .br | |
71 | /var/db/pwd.db.tmp A temporary file | |
72 | .br | |
73 | /var/db/spwd.db The secure password database file | |
74 | .br | |
75 | /var/db/spwd.db.tmp A temporary file | |
76 | .br | |
77 | /etc/master.passwd The current password file | |
78 | .br | |
79 | /etc/passwd A Version 7 format password file | |
80 | .SH BUGS | |
81 | Because of the necessity for atomic update of the password files, | |
82 | .I pwd_mkdb | |
83 | uses | |
84 | .IR rename (2) | |
85 | to install them. | |
86 | This, however, requires that the file specified on the command line live | |
87 | on the same file system as the ``/etc'' directory. | |
88 | .PP | |
89 | There are the obvious races with multiple people running | |
90 | .I pwd_mkdb | |
91 | on different password files at the same time. | |
92 | The front-ends to | |
93 | .IR pwd_mkdb , | |
94 | .IR chpass (1), | |
95 | .IR passwd (1) | |
96 | and | |
97 | .IR vipw (8), | |
98 | handle the locking necessary to avoid this problem. | |
99 | .SH COMPATIBILITY | |
100 | Previous versions of the system had a program similar to | |
101 | .I pwd_mkdb, | |
102 | .IR mkpasswd (8), | |
103 | which built | |
104 | .I dbm (3) | |
105 | style databases for the password file but depended on the calling programs | |
106 | to install them. | |
107 | The program was renamed in order that previous users of the program | |
108 | not be surprised by the changes in functionality. | |
109 | .SH SEE ALSO | |
110 | chpass(1), passwd(1), db(3), getpwent(3), passwd(5), vipw(8) |