Initial 3.14 commit

Python/emscripten_syscalls.c

@@ -0,0 +1,39 @@
+#include "emscripten.h"
+
+// If we're running in node, report the UID of the user in the native system as
+// the UID of the user. Since the nodefs will report the uid correctly, if we
+// don't make getuid report it correctly too we'll see some permission errors.
+// Normally __syscall_getuid32 is a stub that always returns 0 but it is
+// defined with weak linkage so we can override it.
+EM_JS(int, __syscall_getuid32_js, (void), {
+    // If we're in node and we can, report the native uid
+    if (ENVIRONMENT_IS_NODE) {
+        return process.getuid();
+    }
+    // Fall back to the stub case of returning 0.
+    return 0;
+})
+
+int __syscall_getuid32(void) {
+    return __syscall_getuid32_js();
+}
+
+EM_JS(int, __syscall_umask_js, (int mask), {
+    // If we're in node and we can, call native process.umask()
+    if (ENVIRONMENT_IS_NODE) {
+        try {
+            return process.umask(mask);
+        } catch(e) {
+            // oops...
+            // NodeJS docs: "In Worker threads, process.umask(mask) will throw an exception."
+            // umask docs: "This system call always succeeds"
+            return 0;
+        }
+    }
+    // Fall back to the stub case of returning 0.
+    return 0;
+})
+
+int __syscall_umask(int mask) {
+    return __syscall_umask_js(mask);
+}