fs.mitm: Add HANS-style redirection for System Data Archives.

stratosphere/fs_mitm/source/fs_shim.c

@@ -0,0 +1,155 @@
+#include <switch.h>
+#include "fs_shim.h"
+
+/* Missing fsp-srv commands. */
+Result fsOpenDataStorageByDataId(Service* s, FsStorageId storage_id, u64 data_id, FsStorage* out) {
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+        FsStorageId storage_id;
+        u64 data_id;
+    } *raw;
+
+    raw = ipcPrepareHeader(&c, sizeof(*raw));
+
+    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;
+        ipcParse(&r);
+
+        struct {
+            u64 magic;
+            u64 result;
+        } *resp = r.Raw;
+
+        rc = resp->result;
+
+        if (R_SUCCEEDED(rc)) {
+            serviceCreate(&out->s, r.Handles[0]);
+        }
+    }
+
+    return rc;
+}
+
+/* Missing FS File commands. */
+Result fsFileOperateRange(FsFile* f, u32 op_id, u64 off, u64 len, FsRangeInfo *out) {
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+        u32 op_id;
+        u64 off;
+        u64 len;
+    } *raw;
+
+    raw = ipcPrepareHeader(&c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 5;
+    raw->op_id = op_id;
+    raw->off = off;
+    raw->len = len;
+
+    Result rc = serviceIpcDispatch(&f->s);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        ipcParse(&r);
+
+        struct {
+            u64 magic;
+            u64 result;
+            FsRangeInfo range_info;
+        } *resp = r.Raw;
+
+        rc = resp->result;
+        if (R_SUCCEEDED(rc) && out) *out = resp->range_info;
+    }
+
+    return rc;
+}
+
+/* Missing FS Storage commands. */
+Result fsStorageGetSize(FsStorage* s, u64* out) {
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+    } *raw;
+
+    raw = ipcPrepareHeader(&c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 4;
+
+    Result rc = serviceIpcDispatch(&s->s);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        ipcParse(&r);
+
+        struct {
+            u64 magic;
+            u64 result;
+            u64 size;
+        } *resp = r.Raw;
+
+        rc = resp->result;
+        if (R_SUCCEEDED(rc) && out) *out = resp->size;
+    }
+
+    return rc;
+}
+
+Result fsStorageOperateRange(FsStorage* s, u32 op_id, u64 off, u64 len, FsRangeInfo *out) {
+    IpcCommand c;
+    ipcInitialize(&c);
+
+    struct {
+        u64 magic;
+        u64 cmd_id;
+        u32 op_id;
+        u64 off;
+        u64 len;
+    } *raw;
+
+    raw = ipcPrepareHeader(&c, sizeof(*raw));
+
+    raw->magic = SFCI_MAGIC;
+    raw->cmd_id = 5;
+    raw->op_id = op_id;
+    raw->off = off;
+    raw->len = len;
+
+    Result rc = serviceIpcDispatch(&s->s);
+
+    if (R_SUCCEEDED(rc)) {
+        IpcParsedCommand r;
+        ipcParse(&r);
+
+        struct {
+            u64 magic;
+            u64 result;
+            FsRangeInfo range_info;
+        } *resp = r.Raw;
+
+        rc = resp->result;
+        if (R_SUCCEEDED(rc) && out) *out = resp->range_info;
+    }
+
+    return rc;
+}