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init: Allow wildcards in property triggers by using * for property value 

For example, the following trigger will fire when the sys.foo property
is set to any value:

on property:sys.foo=*
    write /data/foo hello

It is also possible to refer to the property within the trigger actions:

on property:sys.foo=*
    write /data/foo $sys.foo

Change-Id: If78d20a532f77e17aa5703d53be581ad6736cbcf
Signed-off-by: Mike Lockwood <lockwood@android.com>
This commit is contained in:
Mike Lockwood 2011-06-07 18:16:55 -07:00
parent 2c4d5dc415
commit 7ba61b15ed
1 changed files with 4 additions and 2 deletions
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6
init/init_parser.c
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@ -347,7 +347,8 @@ void queue_property_triggers(const char *name, const char *value)
if (!strncmp(name, test, name_length) &&
test[name_length] == '=' &&
!strcmp(test + name_length + 1, value)) {
(!strcmp(test + name_length + 1, value) ||
!strcmp(test + name_length + 1, "*"))) {
action_add_queue_tail(act);
}
}
@ -377,7 +378,8 @@ void queue_all_property_triggers()
/* does the property exist, and match the trigger value? */
value = property_get(prop_name);
if (value && !strcmp(equals + 1, value)) {
if (value && (!strcmp(equals + 1, value) ||
!strcmp(equals + 1, "*"))) {
action_add_queue_tail(act);
}
}