Refine unmount

loader/src/common/daemon.cpp

@@ -58,6 +58,17 @@ namespace zygiskd {
         return socket_utils::read_string(fd);
     }
 
+    uint32_t GetProcessFlags(uid_t uid) {
+        UniqueFd fd = Connect(1);
+        if (fd == -1) {
+            PLOGE("GetProcessFlags");
+            return 0;
+        }
+        socket_utils::write_u8(fd, (uint8_t) SocketAction::GetProcessFlags);
+        socket_utils::write_u32(fd, uid);
+        return socket_utils::read_u32(fd);
+    }
+
     std::vector<Module> ReadModules() {
         std::vector<Module> modules;
         UniqueFd fd = Connect(1);

loader/src/common/socket_utils.cpp

@@ -90,6 +90,10 @@ namespace socket_utils {
         return read_exact_or<uint8_t>(fd, 0);
     }
 
+    uint32_t read_u32(int fd) {
+        return read_exact_or<uint32_t>(fd, 0);
+    }
+
     size_t read_usize(int fd) {
         return read_exact_or<size_t>(fd, 0);
     }
@@ -110,6 +114,10 @@ namespace socket_utils {
         return write_exact<uint8_t>(fd, val);
     }
 
+    bool write_u32(int fd, uint32_t val) {
+        return write_exact<uint32_t>(fd, val);
+    }
+
     bool write_string(int fd, std::string_view str) {
         return write_usize(fd, str.size()) && str.size() == xwrite(fd, str.data(), str.size());
     }