AM: implement external title database IPC functions

Correct use of these functions allows applications that require
the external (SD) title database (e.g. title installers) to check
if it exists, and if not, have it created.

diff --git a/libctru/include/3ds/services/am.h b/libctru/include/3ds/services/am.h
index 0827d1033e94d067af894967967b949fcac99194..31f4b06035357dabd69bb7a1f64aef1733b160f7 100644 (file)
--- a/libctru/include/3ds/services/am.h
+++ b/libctru/include/3ds/services/am.h
@@ -112,3 +112,15 @@ Result AM_GetTitleProductCode(u8 mediatype, u64 titleID, char* productCode);
  * @param fileHandle Handle of the CIA file to read.
  */
 Result AM_GetCiaFileInfo(u8 mediatype, AM_TitleEntry *titleEntry, Handle fileHandle);
+
+/**
+ * @brief Initializes the external (SD) title database.
+ * @param overwrite Overwrites the database if it already exists.
+ */
+Result AM_InitializeExternalTitleDatabase(bool overwrite);
+
+/**
+ * @brief Queries whether the external title database is available.
+ * @param[out] available Pointer to output the availability status to.
+ */
+Result AM_QueryAvailableExternalTitleDatabase(bool* available);

diff --git a/libctru/source/services/am.c b/libctru/source/services/am.c
index 2a71007b45d9d26757d2dce4c48f5d2995d49c7c..509ca3e583d233a060cd75a0c334e59357c21784 100644 (file)
--- a/libctru/source/services/am.c
+++ b/libctru/source/services/am.c
@@ -233,3 +233,34 @@ Result AM_GetCiaFileInfo(u8 mediatype, AM_TitleEntry *titleEntry, Handle fileHan
 
        return (Result)cmdbuf[1];
 }
+
+Result AM_InitializeExternalTitleDatabase(bool overwrite)
+{
+       Result ret = 0;
+       u32 *cmdbuf = getThreadCommandBuffer();
+
+       cmdbuf[0] = IPC_MakeHeader(0x18,2,0); // 0x180080
+       cmdbuf[1] = 1; // No other media type is accepted
+       cmdbuf[2] = overwrite;
+
+       if(R_FAILED(ret = svcSendSyncRequest(amHandle))) return ret;
+
+       return (Result)cmdbuf[1];
+}
+
+Result AM_QueryAvailableExternalTitleDatabase(bool* available)
+{
+       Result ret = 0;
+       u32 *cmdbuf = getThreadCommandBuffer();
+
+       cmdbuf[0] = IPC_MakeHeader(0x19,1,0); // 0x190040
+       cmdbuf[1] = 1; // No other media type is accepted
+
+       if(R_FAILED(ret = svcSendSyncRequest(amHandle))) return ret;
+       if(R_FAILED(ret = (Result)cmdbuf[1])) return ret;
+
+       // Only accept this if the command was a success
+       if(available) *available = cmdbuf[2];
+
+       return ret;
+}