yppasswdd(1M)
NAME
rpc.yppasswdd, yppasswdd - server for modifying NIS password
file
SYNOPSIS
/usr/lib/netsvc/yp/rpc.yppasswdd [-D directory] [-nogecos]
[-noshell] [-nopw] [ -m argument1 argument2...]
/usr/lib/netsvc/yp/rpc.yppasswdd [ passwordfile
[adjunctfile]] [-nogecos] [-noshell] [-nopw] [ -m argument1
argument2...]
DESCRIPTION
rpc.yppasswdd is a server that handles password change
requests from yppasswd(1). It changes a password entry in
the passwd, shadow, and security/passwd.adjunct files. The
passwd and shadow files provide the basis for the
passwd.byname and passwd.byuid maps. The passwd.adjunct file
provides the basis for the passwd.adjunct.byname and
passwd.adjunct.byuid maps. Entries in the passwd, shadow or
passwd.adjunct files are changed only if the password
presented by yppasswd(1) matches the encrypted password of
the entry. All password files are located in the PWDIR
directory.
If the -D option is given, the passwd, shadow, or
passwd.adjunct files are placed under the directory path
that is the argument to -D.
If the -noshell, -nogecos or -nopw options are given, these
fields cannot be changed remotely using chfn, chsh, or
passwd(1).
If the -m option is given, a make(1) is performed in /var/yp
after any of the passwd, shadow, or passwd.adjunct files are
modified. All arguments following the flag are passed to
make.
The second of the listed syntaxes is provided only for back-
ward compatibility. If the second syntax is used, the
passwordfile is the full pathname of the password file and
adjunctfile is the full pathname of the optional
passwd.adjunct file. If a shadow file is found in the same
directory as passwordfile, the shadowfile is used as
described above. Use of this syntax and the discovery of a
shadowfile file generates diagnostic output. The daemon,
however, starts normally.
The first and second syntaxes are mutually exclusive. You
cannot specify the full pathname of the passwd,
passwd.adjunct files and use the -D option at the same time.
The daemon is started automatically on the master server of
the passwd map by ypstart(1M), which is invoked at boot time
by the /etc/init.d/rpc script.
The server does not insist on the presence of a shadow file
unless there is no -D option present or the directory named
with the -D option is /etc. In addition, a passwd.adjunct
file is not necessary. If the -D option is given, the
server attempts to find a passwd.adjunct file in the secu-
rity subdirectory of the named directory. For example, in
the presence of -D /var/yp the server checks for a
/var/yp/security/passwd.adjunct file.
If only a passwd file exists, then the encrypted password is
expected in the second field. If both a passwd and a
passwd.adjunct file exist, the encrypted password is
expected in the second field of the adjunct file with
##username in the second field of the passwd file. If all
three files are in use, the encrypted password is expected
in the shadow file. Any deviation causes a password update
to fail.
If you remove or add a shadow or passwd.adjunct file after
rpc.yppasswdd has started, you must stop and restart the
daemon to enable it to recognize the change. See ypstart(1m)
for information on restarting the daemon.
The rpc.yppasswdd daemon considers a shell that has a name
that begins with 'r' to be a restricted shell. By default,
the daemon does not check whether a shell begins with an
'r'. However, you can tell it to do so by uncommenting the
check_restricted_shell_name=1 line in
/etc/default/yppasswdd. The result will be to restrict a
user's ability to change from his default shell. See
yppasswdd(4).
On start up, yppasswdd checks for the existence of a NIS to
LDAP (N2L) configuration file, /var/yp/NISLDAPmapping. If
the configuration file is present, the daemon runs in N2L
mode. If the file is not present, yppasswdd runs in tradi-
tional, non-N2L mode.
In N2L mode, changes are written directly to the Directory
Information Tree (DIT). If the changes are written success-
fully, the NIS map is updated. The NIS source files, passwd,
shadow, and passwd.adjunct, for example, are not updated.
Thus, in N2L mode, the -D option is meaningless. In N2L
mode, yppasswdd propogates changes by calling yppush(1M)
instead of ypmake(1M). The -m option is thus unused.
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWypu |
|_____________________________|_____________________________|
SEE ALSO
make(1), passwd(1), yppasswd(1), inetd(1M), ypmake(1M),
yppush(1M), NISLDAPmapping(4), passwd(4), shadow(4),
ypfiles(4), yppasswdd(4), ypserv(4), attributes(5)
NOTES
If make has not been installed and the -m option is given,
the daemon outputs a warning and proceeds, effectively
ignoring the -m flag.
When using the -D option, you should make sure that the
PWDIR of the /var/yp/Makefile is set accordingly.
The second listed syntax is supplied only for backward com-
patibility and might be removed in a future release of this
daemon.
The Network Information Service (NIS) was formerly known as
Sun Yellow Pages (YP). The functionality of the two remains
the same; only the name has changed. The name Yellow Pages
is a registered trademark in the United Kingdom of British
Telecommunications PLC, and cannot be used without permis-
sion.
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