SeekTo crash fix when you was trying to partially read large file which is over 2 GB

RNFSManager.m

@@ -175,7 +175,7 @@ + (BOOL)requiresMainQueueSetup
 
 RCT_EXPORT_METHOD(write:(NSString *)filepath
                   contents:(NSString *)base64Content
-                  position:(NSInteger)position
+                  position:(NSNumber *)position
                   resolver:(RCTPromiseResolveBlock)resolve
                   rejecter:(RCTPromiseRejectBlock)reject)
 {
@@ -197,8 +197,8 @@ + (BOOL)requiresMainQueueSetup
   @try {
     NSFileHandle *fH = [NSFileHandle fileHandleForUpdatingAtPath:filepath];
 
-    if (position >= 0) {
-      [fH seekToFileOffset:position];
+    if ([position unsignedLongLongValue] >= 0) {
+      [fH seekToFileOffset: [position unsignedLongLongValue]];
     } else {
       [fH seekToEndOfFile];
     }
@@ -294,8 +294,8 @@ + (BOOL)requiresMainQueueSetup
 }
 
 RCT_EXPORT_METHOD(read:(NSString *)filepath
-                  length: (NSInteger *)length
-                  position: (NSInteger *)position
+                  length: (NSNumber *)length
+                  position: (NSNumber *)position
                   resolver:(RCTPromiseResolveBlock)resolve
                   rejecter:(RCTPromiseRejectBlock)reject)
 {
@@ -324,11 +324,11 @@ + (BOOL)requiresMainQueueSetup
     }
 
     // Seek to the position if there is one.
-    [file seekToFileOffset: (int)position];
+    [file seekToFileOffset: [position unsignedLongLongValue]];
 
     NSData *content;
-    if ((int)length > 0) {
-        content = [file readDataOfLength: (int)length];
+    if ([length intValue] > 0) {
+        content = [file readDataOfLength: [length intValue]];
     } else {
         content = [file readDataToEndOfFile];
     }

android/src/main/java/com/rnfs/RNFSManager.java

@@ -186,7 +186,7 @@ public void appendFile(String filepath, String base64Content, Promise promise) {
   }
 
   @ReactMethod
-  public void write(String filepath, String base64Content, int position, Promise promise) {
+  public void write(String filepath, String base64Content, double position, Promise promise) {
     try {
       byte[] bytes = Base64.decode(base64Content, Base64.DEFAULT);
 
@@ -196,7 +196,7 @@ public void write(String filepath, String base64Content, int position, Promise p
         outputStream.close();
       } else {
         RandomAccessFile file = new RandomAccessFile(filepath, "rw");
-        file.seek(position);
+        file.seek((long) position);
         file.write(bytes);
         file.close();
       }
@@ -234,11 +234,11 @@ public void readFile(String filepath, Promise promise) {
   }
 
   @ReactMethod
-  public void read(String filepath, int length, int position, Promise promise) {
+  public void read(String filepath, int length, double position, Promise promise) {
     try {
       InputStream inputStream = getInputStream(filepath);
       byte[] buffer = new byte[length];
-      inputStream.skip(position);
+      inputStream.skip((long) position);
       int bytesRead = inputStream.read(buffer, 0, length);
 
       String base64Content = Base64.encodeToString(buffer, 0, bytesRead, Base64.NO_WRAP);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-native-fs",
-  "version": "2.20.0",
+  "version": "2.20.1",
   "description": "Native filesystem access for react-native",
   "main": "FS.common.js",
   "typings": "index.d.ts",