MF22: Remove confusing comma

[pw-darwin.git] / chpass / chpass.1

diff --git a/chpass/chpass.1 b/chpass/chpass.1
index 83cddb850fdd114d225b636b452fd9d84c9d7f2b..e9059a64de79e1472ac216278c7f81f82d7b520a 100644 (file)
--- a/chpass/chpass.1
+++ b/chpass/chpass.1
@@ -30,6 +30,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)chpass.1   8.2 (Berkeley) 12/30/93
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)chpass.1   8.2 (Berkeley) 12/30/93

+.\"     $Id$

 .\"
 .Dd December 30, 1993
 .Dt CHPASS 1
 .\"
 .Dd December 30, 1993
 .Dt CHPASS 1


@@ -38,7 +39,7 @@
 .Nm chpass, chfn, chsh, ypchpass, ypchfn, ypchsh
 .Nd add or change user database information
 .Sh SYNOPSIS
 .Nm chpass, chfn, chsh, ypchpass, ypchfn, ypchsh
 .Nd add or change user database information
 .Sh SYNOPSIS

-chpass
+.Nm chpass

 .Op Fl a Ar list
 .Op Fl p Ar encpass
 .Op Fl s Ar newshell
 .Op Fl a Ar list
 .Op Fl p Ar encpass
 .Op Fl s Ar newshell


@@ -212,39 +213,64 @@ apply.
 Currently,
 .Nm chpass
 can only make changes to the NIS passwd maps through
 Currently,
 .Nm chpass
 can only make changes to the NIS passwd maps through

-.Xr yppasswdd 8 ,
-which only permits changes to a user's password, shell and gecos
-fields. It can not be used to change other user information or to
-add new records to the NIS passwd maps. (Doing that would require
-something such as ypupdated, which is not yet supported.)
+.Xr rpc.yppasswdd 8 ,
+which normally only permits changes to a user's password, shell and GECOS
+fields. Except when invoked by the super-user on the NIS master server,
+.Nm chpass
+(and, similarly,
+.Xr passwd 1 )
+can not use the
+.Xr rpc.yppasswdd 8
+server to change other user information or
+add new records to the NIS passwd maps.

 Furthermore,
 Furthermore,

-.Xr yppasswdd 8
+.Xr rpc.yppasswdd 8

 requires password authentication before it will make any
 requires password authentication before it will make any

-changes, even if it receives a request from the super-user.
+changes. The only user allowed to submit changes without supplying
+a password is the super-user on the NIS master server; all other users,
+including those with root privileges on NIS clients (and NIS slave
+servers) must enter a password.
+(The super-user on the NIS master is allowed to bypass these restrictions
+largely for convenience: a user with root access
+to the NIS master server already has the privileges required to make
+updates to the NIS maps, but editing the map source files by hand can
+be cumbersome.
+.Pp
+Note: these exceptions only apply when the NIS master server is a
+FreeBSD system.)

 .Pp
 .Pp

-As a result, the following restrictions apply when
+Consequently, except where noted, the following restrictions apply when

 .Nm chpass
 is used with NIS:
 .Bl -enum -offset indent
 .It
 .Nm chpass
 is used with NIS:
 .Bl -enum -offset indent
 .It

-.Pa Only the shell and gecos information may be changed.
+.Pa Only the shell and GECOS information may be changed.

 All other
 fields are restricted, even when
 .Nm chpass
 All other
 fields are restricted, even when
 .Nm chpass

-is invoked by the super-user, because the
-.Xr yppasswdd 8
-daemon has no support for updating them. While support for
+is invoked by the super-user.
+While support for

 changing other fields could be added, this would lead to
 compatibility problems with other NIS-capable systems.
 Even though the super-user may supply data for other fields
 while editing an entry, the extra information (other than the
 password -- see below) will be silently discarded.
 changing other fields could be added, this would lead to
 compatibility problems with other NIS-capable systems.
 Even though the super-user may supply data for other fields
 while editing an entry, the extra information (other than the
 password -- see below) will be silently discarded.

+.Pp
+Exception: the super-user on the NIS master server is permitted to
+change any field.
+.Pp

 .It
 .Pa Password authentication is required.
 .Nm Chpass
 will prompt for the user's NIS password before effecting
 any changes. If the password is invalid, all changes will be
 discarded.
 .It
 .Pa Password authentication is required.
 .Nm Chpass
 will prompt for the user's NIS password before effecting
 any changes. If the password is invalid, all changes will be
 discarded.

+.Pp
+Exception: the super-user on the NIS master server is allowed to
+submit changes without supplying a password. (The super-user may
+choose to turn off this feature using the
+.Fl o
+flag, described below.)

 .It
 .Pa Adding new records to the local
 .Pa password database is discouraged.
 .It
 .Pa Adding new records to the local
 .Pa password database is discouraged.


@@ -257,6 +283,18 @@ The administrator should use
 .Xr vipw 8
 to modify the local password
 file when NIS is running.
 .Xr vipw 8
 to modify the local password
 file when NIS is running.

+.Pp
+The super-user on the NIS master server is permitted to add new records
+to the NIS password maps, provided the
+.Xr rpc.yppasswdd 8
+server has been started with the
+.Fl a
+flag to permitted additions (it refuses them by default).
+.Nm Chpass
+tries to update the local password database by default; to update the
+NIS maps instead, invoke chpass with the
+.Fl y
+flag.

 .It
 .Pa Password changes are not permitted.
 Users should use
 .It
 .Pa Password changes are not permitted.
 Users should use


@@ -268,11 +306,15 @@ a new password (even though the ``Password:'' field does not show
 up in the editor template, the super-user may add it back by hand),
 but even the super-user must supply the user's original password
 otherwise
 up in the editor template, the super-user may add it back by hand),
 but even the super-user must supply the user's original password
 otherwise

-.Xr yppasswdd 8
+.Xr rpc.yppasswdd 8

 will refuse to update the NIS maps.
 will refuse to update the NIS maps.

+.Pp
+Exception: the super-user on the NIS master server is permitted to
+change a user's NIS password with
+.Nm chpass .

 .El
 .Pp
 .El
 .Pp

-There are also two extra option flags that are available when
+There are also a few extra option flags that are available when

 .Nm chpass
 is compiled with NIS support:
 .Bl -tag -width flag
 .Nm chpass
 is compiled with NIS support:
 .Bl -tag -width flag


@@ -290,6 +332,50 @@ This flag has the opposite effect of
 This flag is largely redundant since
 .Nm chpass
 operates on NIS entries by default if NIS is enabled.
 This flag is largely redundant since
 .Nm chpass
 operates on NIS entries by default if NIS is enabled.

+.It Fl d Ar domain
+Specify a particular NIS domain.
+.Nm Chpass
+uses the system domain name by default, as set by the
+.Xr domainname 1
+command. The
+.Fl d
+option can be used to override a default, or to specify a domain
+when the system domain name is not set.
+.It Fl h Ar host
+Specify the name or address of an NIS server to query. Normally,
+.Nm chpass
+will communicate with the NIS master host specified in the
+.Pa master.passwd
+or
+.Pa passwd
+maps. On hosts that have not been configured as NIS clients, there is
+no way for the program to determine this information unless the user
+provides the hostname of a server. Note that the specified hostname need
+not be that of the NIS master server; the name of any server, master or
+slave, in a given NIS domain will do.
+.Pp
+When using the
+.Fl d
+option, the hostname defaults to ``localhost.'' The
+.Fl h
+option can be used in conjunction with the
+.Fl d
+option, in which case the user-specified hostname will override
+the default.
+.Pp
+.It Fl o
+Force the use of RPC-based updates when communicating with
+.Xr rpc.yppasswdd 8
+(``old-mode'').
+When invoked by the super-user on the NIS master server,
+.Nm chpass
+allows unrestricted changes to the NIS passwd maps using dedicated,
+non-RPC-based mechanism (in this case, a UNIX domain socket). The
+.Fl o
+flag can be used to force
+.Nm chpass
+to use the standard update mechanism instead. This option is provided
+mainly for testing purposes.

 .El
 .Pp
 .Sh FILES
 .El
 .Pp
 .Sh FILES


@@ -304,8 +390,8 @@ Temporary copy of the password file
 The list of approved shells
 .El
 .Sh SEE ALSO
 The list of approved shells
 .El
 .Sh SEE ALSO

-.Xr login 1 ,

 .Xr finger 1 ,
 .Xr finger 1 ,

+.Xr login 1 ,

 .Xr passwd 1 ,
 .Xr getusershell 3 ,
 .Xr passwd 5 ,
 .Xr passwd 1 ,
 .Xr getusershell 3 ,
 .Xr passwd 5 ,