[PATCH 2/4] dix: Add reverse resource name lookup function to registry.

[Rami Ylimäki]

Currently only some pre-defined resource types can be accessed from
headers. Make it possible to find out types of new resources that
aren't pre-defined but need to be registered separately.

Signed-off-by: Rami Ylimäki <rami.ylimaki at vincit.fi>
---
 dix/registry.c     |   10 ++++++++++
 include/registry.h |    6 ++++++
 2 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/dix/registry.c b/dix/registry.c
index fc35dbb..15f85cc 100644
--- a/dix/registry.c
+++ b/dix/registry.c
@@ -273,6 +273,16 @@ LookupResourceName(RESTYPE resource)
     return resources[resource] ? resources[resource] : XREGISTRY_UNKNOWN;
 }
 
+RESTYPE
+LookupResourceType(const char *name)
+{
+    RESTYPE resource = nresource;
+    while (--resource > 0)
+        if (resources[resource] && !strcmp(resources[resource], name))
+            return resource;
+    return RT_NONE;
+}
+
 /*
  * Setup and teardown
  */
diff --git a/include/registry.h b/include/registry.h
index 325f765..99a3e65 100644
--- a/include/registry.h
+++ b/include/registry.h
@@ -41,6 +41,11 @@ extern _X_EXPORT const char *LookupErrorName(int error);
 extern _X_EXPORT const char *LookupResourceName(RESTYPE rtype);
 
 /*
+ * Reverse lookup functions.
+ */
+extern _X_EXPORT RESTYPE LookupResourceType(const char *name);
+
+/*
  * Setup and teardown
  */
 extern _X_EXPORT void dixResetRegistry(void);
@@ -57,6 +62,7 @@ extern _X_EXPORT void dixResetRegistry(void);
 #define LookupEventName(a) XREGISTRY_UNKNOWN
 #define LookupErrorName(a) XREGISTRY_UNKNOWN
 #define LookupResourceName(a) XREGISTRY_UNKNOWN
+#define LookupResourceType(a) RT_NONE
 
 #define dixResetRegistry() { ; }
 
-- 
1.6.3.3