libstratosphere/fs.mitm: Push WIP support for Domains. Not yet fully working.

stratosphere/fs_mitm/source/fs_shim.c

@@ -1,6 +1,47 @@
 #include <switch.h>
 #include "fs_shim.h"
 
+/* Necessary evil. */
+Result ipcCopyFromDomain(Handle session, u32 object_id, Service *out) {
+    u32* buf = (u32*)armGetTls();
+
+    IpcCommand c;
+    ipcInitialize(&c);
+    
+    struct {
+        u64 magic;
+        u64 cmd_id;
+        u32 object_id;
+    } *raw;
+
+    raw = ipcPrepareHeader(&c, sizeof(*raw));
+    buf[0] = IpcCommandType_Control;
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 1;
+    raw->object_id = object_id;
+
+    Result rc = ipcDispatch(session);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        ipcParse(&r);
+
+        struct ipcCopyFromDomainResponse {
+            u64 magic;
+            u64 result;
+        } *raw = (struct ipcCopyFromDomainResponse*)r.Raw;
+
+        rc = raw->result;
+
+        if (R_SUCCEEDED(rc)) {
+            serviceCreate(out, r.Handles[0]);
+        }
+    }
+
+    return rc;
+}
+
+
 /* Missing fsp-srv commands. */
 Result fsOpenDataStorageByDataId(Service* s, FsStorageId storage_id, u64 data_id, FsStorage* out) {
     IpcCommand c;
@@ -41,6 +82,47 @@ Result fsOpenDataStorageByDataId(Service* s, FsStorageId storage_id, u64 data_id
     return rc;
 }
 
+
+Result fsOpenDataStorageByDataIdFromDomain(Service* s, FsStorageId storage_id, u64 data_id, u32 *out_object_id) {
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+        FsStorageId storage_id;
+        u64 data_id;
+    } *raw;
+
+    raw = ipcPrepareHeaderForDomain(&c, sizeof(*raw), s->object_id);
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 202;
+    raw->storage_id = storage_id;
+    raw->data_id = data_id;
+
+    Result rc = serviceIpcDispatch(s);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        ipcParseForDomain(&r);
+
+        struct {
+            u64 magic;
+            u64 result;
+            u32 object_id;
+        } *resp = r.Raw;
+
+        rc = resp->result;
+
+        if (R_SUCCEEDED(rc)) {
+            *out_object_id = resp->object_id;
+        }
+    }
+
+    return rc;
+}
+
 /* Missing FS File commands. */
 Result fsFileOperateRange(FsFile* f, u32 op_id, u64 off, u64 len, FsRangeInfo *out) {
     IpcCommand c;