New sensors.conf keyword 'ignore'

This often-asked for, long-planned and somewhat-forgotten feature
makes it possible to tell libsensors-linked applications (like
the sensors program) that certain features should not be displayed.
This is very nice for things like unconnected temperature sensors
or fans.

Modifications to the library code, to the sensors program and to
the documentation and example sensors.conf file.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@676 7894878c-1315-0410-8ee3-d5d059ff63e0

lib/conf-parse.y

@@ -60,6 +60,11 @@ static sensors_chip *current_chip = NULL;
                                           &current_chip->computes_count,\
                                           &current_chip->computes_max,\
                                           sizeof(sensors_compute));
+#define ignore_add_el(el) sensors_add_array_el(el,\
+                                          (void **) &current_chip->ignores,\
+                                          &current_chip->ignores_count,\
+                                          &current_chip->ignores_max,\
+                                          sizeof(sensors_ignore));
 #define chip_add_el(el) sensors_add_array_el(el,\
                                        (void **) &sensors_config_chips,\
                                        &sensors_config_chips_count,\
@@ -105,6 +110,7 @@ static sensors_chip *current_chip = NULL;
 %token <line> SET
 %token <line> CHIP
 %token <line> COMPUTE
+%token <line> IGNORE
 %token <value> FLOAT
 %token <name> NAME
 %token <nothing> ERROR
@@ -131,6 +137,7 @@ line:	  bus_statement EOL
 	| set_statement EOL
 	| chip_statement EOL
 	| compute_statement EOL
+	| ignore_statement EOL
 	| error	EOL
 ;
 
@@ -175,15 +182,25 @@ compute_statement:	  COMPUTE function_name expression ',' expression
 			  }
 ;
 
+ignore_statement:	IGNORE function_name
+			{ sensors_ignore new_el;
+			  check_current_chip();
+			  new_el.lineno = $1;
+			  new_el.name = $2;
+			  ignore_add_el(&new_el);
+			}
+
 chip_statement:	  CHIP chip_name_list
 		  { sensors_chip new_el;
 		    new_el.lineno = $1;
 		    new_el.labels = NULL;
 		    new_el.sets = NULL;
 		    new_el.computes = NULL;
+		    new_el.ignores = NULL;
 		    new_el.labels_count = new_el.labels_max = 0;
 		    new_el.sets_count = new_el.sets_max = 0;
 		    new_el.computes_count = new_el.computes_max = 0;
+		    new_el.ignores_count = new_el.ignores_max = 0;
 		    new_el.chips = $2;
 		    chip_add_el(&new_el);
 		    current_chip = sensors_config_chips +