Sometimes, it's useful to export the entire line to an external

program without listening to the devd socket for all events. Define
two new pseudo variables $*, the entire event from devctl and $_,
the entire event without the type character, since it might be easier
to use in some circumstances.

2 files changed, 15 insertions, 3 deletions

diff --git a/sbin/devd/devd.cc b/sbin/devd/devd.cc
index 203d750..46fe315 100644
--- a/sbin/devd/devd.cc
+++ b/sbin/devd/devd.cc
@@ -648,8 +648,8 @@ config::expand_one(const char *&src, string &dst)
 		return;
 	}
 
-	// $[^A-Za-z] -> $\1
-	if (!isalpha(*src)) {
+	// $[^-A-Za-z_*] -> $\1
+	if (!isalpha(*src) && *src != '_' && *src != '-' && *src != '*') {
 		dst += '$';
 		dst += *src++;
 		return;
@@ -793,10 +793,15 @@ process_event(char *buffer)
 	devdlog(LOG_INFO, "Processing event '%s'\n", buffer);
 	type = *buffer++;
 	cfg.push_var_table();
+	// $* is the entire line
+	cfg.set_variable("*", buffer - 1);
+	// $_ is the entire line without the initial character
+	cfg.set_variable("_", buffer - 1);
 	// No match doesn't have a device, and the format is a little
 	// different, so handle it separately.
 	switch (type) {
 	case notify:
+		//! (k=v)*
 		sp = cfg.set_vars(sp);
 		break;
 	case nomatch:
diff --git a/sbin/devd/devd.conf.5 b/sbin/devd/devd.conf.5
index 86570fb..21779ed 100644
--- a/sbin/devd/devd.conf.5
+++ b/sbin/devd/devd.conf.5
@@ -41,7 +41,7 @@
 .\" ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 .\" SOFTWARE.
 .\"
-.Dd July 11, 2015
+.Dd March 28, 2016
 .Dt DEVD.CONF 5
 .Os
 .Sh NAME
@@ -234,10 +234,17 @@ A partial list of variables and their possible values that can be used together
 with the
 .Ic match
 statement.
+The variables are published by the bus based on characteristics of the device
+that generated the event (for device events).
+Variables for other classes of events are dependent on those events.
 .Pp
 .Bl -tag -width ".Li manufacturer" -compact
 .It Ic Variable
 .Ic Description
+.It Li *
+The entire message from the current event
+.It Li _
+The entire message from the current event, after the initial type character
 .It Li bus
 Device name of parent bus.
 .It Li cdev