.Op Ar options
.Ar identity
.Op Ic as Ar target
-.Op Ic cmd Ar command Op Ic args ...
+.Op Ic cmd Ar command Op Ic args No ...
.Ed
.Pp
Rules consist of the following parts:
.Bl -tag -width keepenv
.It Ic nopass
The user is not required to enter a password.
+.It Ic persist
+After the user successfully authenticates, do not ask for a password
+again for some time.
.It Ic keepenv
The user's environment is maintained.
The default is to reset the environment, except for the variables
.Ev USER
and
.Ev USERNAME .
-.It Ic keepenv { Oo Ar variable ... Oc Ic }
+.It Ic setenv { Oo Ar variable ... Oc Oo Ar variable=value ... Oc Ic }
In addition to the variables mentioned above, keep the space-separated
specified variables.
+Variables may also be removed with a leading
+.Sq -
+or set using the latter syntax.
+If the first character of
+.Ar value
+is a
+.Ql $
+then the value to be set is taken from the existing environment
+variable of the same name.
.El
.It Ar identity
The username to match.
.It Ic cmd Ar command
The command the user is allowed or denied to run.
The default is all commands.
-Be advised that it's best to specify absolute paths.
-.It Ic args ...
+Be advised that it is best to specify absolute paths.
+If a relative path is specified, only a restricted
+.Ev PATH
+will be searched.
+.It Ic args Op Ar argument ...
Arguments to command.
-If specified, the command arguments provided by the user
-need to match for the command to be successful.
-Specifying
+The command arguments provided by the user need to match those specified.
+The keyword
.Ic args
-alone means that command should be run without any arguments.
+alone means that command must be run without any arguments.
.El
.Pp
The last matching rule determines the action taken.
it isn't considered a keyword.
.El
.Sh EXAMPLES
-The following example permits users in group wsrc to build ports,
+The following example permits users in group wsrc to build ports;
wheel to execute commands as any user while keeping the environment
variables
-.Ev ENV ,
-.Ev PS1 ,
+.Ev PS1
and
-.Ev SSH_AUTH_SOCK ,
-and additionally permits tedu to run procmap as root without a password.
+.Ev SSH_AUTH_SOCK
+and
+unsetting
+.Ev ENV ;
+permits tedu to run procmap as root without a password;
+and additionally permits root to run unrestricted commands as itself.
.Bd -literal -offset indent
# Non-exhaustive list of variables needed to
# build release(8) and ports(7)
-permit nopass keepenv { \e
+permit nopass setenv { \e
FTPMODE PKG_CACHE PKG_PATH SM_PATH SSH_AUTH_SOCK \e
DESTDIR DISTDIR FETCH_CMD FLAVOR GROUP MAKE MAKECONF \e
MULTI_PACKAGES NOMAN OKAY_FILES OWNER PKG_DBDIR \e
PKG_DESTDIR PKG_TMPDIR PORTSDIR RELEASEDIR SHARED_ONLY \e
SUBPACKAGE WRKOBJDIR SUDO_PORT_V1 } :wsrc
-permit nopass keepenv { ENV PS1 SSH_AUTH_SOCK } :wheel
+permit setenv { -ENV PS1=$DOAS_PS1 SSH_AUTH_SOCK } :wheel
permit nopass tedu as root cmd /usr/sbin/procmap
.Ed
.Sh SEE ALSO