fix lstat64; increase num returned by heap size

lib/emscripten/src/memory.rs

@@ -20,7 +20,7 @@ pub fn _emscripten_memcpy_big(ctx: &mut Ctx, dest: u32, src: u32, len: u32) -> u
 pub fn _emscripten_get_heap_size(_ctx: &mut Ctx) -> u32 {
     debug!("emscripten::_emscripten_get_heap_size",);
     // TODO: Fix implementation
-    162_107_392
+    162_107_392 * 2
 }
 
 /// emscripten: _emscripten_resize_heap

lib/emscripten/src/syscalls/mod.rs

@@ -418,6 +418,24 @@ pub fn ___syscall197(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
     0
 }
 
+/// lstat64
+pub fn ___syscall196(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 {
+    debug!("emscripten::___syscall196 (lstat64) {}", _which);
+    let path_ptr: c_int = varargs.get(ctx);
+    let buf_ptr: u32 = varargs.get(ctx);
+    let path = emscripten_memory_pointer!(ctx.memory(0), path_ptr) as *const i8;
+    unsafe {
+        let mut stat: stat = std::mem::zeroed();
+        let ret = lstat64(path, &mut stat as *mut stat as *mut c_void);
+        debug!("ret: {}", ret);
+        if ret != 0 {
+            return ret;
+        }
+        copy_stat_into_wasm(ctx, buf_ptr, &stat);
+    }
+    0
+}
+
 pub fn ___syscall220(_ctx: &mut Ctx, _one: i32, _two: i32) -> i32 {
     debug!("emscripten::___syscall220");
     -1

lib/emscripten/src/syscalls/unix.rs

@@ -759,25 +759,6 @@ pub fn ___syscall122(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
     unsafe { uname(buf_addr) }
 }
 
-/// lstat64
-pub fn ___syscall196(ctx: &mut Ctx, _which: i32, mut varargs: VarArgs) -> i32 {
-    debug!("emscripten::___syscall196 (lstat64) {}", _which);
-    let path_ptr: c_int = varargs.get(ctx);
-    let buf_ptr: c_int = varargs.get(ctx);
-    let path = emscripten_memory_pointer!(ctx.memory(0), path_ptr) as *const c_char;
-    let buf = emscripten_memory_pointer!(ctx.memory(0), buf_ptr) as *mut c_void;
-    let result = unsafe { lstat64(path, buf as _) };
-    debug!(
-        "=> path: {}, buf: {} = fd: {}\npath: {}\nlast os error: {}",
-        path_ptr,
-        buf_ptr,
-        result,
-        unsafe { std::ffi::CStr::from_ptr(path).to_str().unwrap() },
-        Error::last_os_error(),
-    );
-    result
-}
-
 /// fallocate
 pub fn ___syscall324(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
     debug!("emscripten::___syscall324 (fallocate) {}", _which);