Update src/misc/helpers.cpp

src/misc/helpers.cpp

@@ -136,4 +136,19 @@ std::string get_absolute_path(const std::string &relative_path)
     }
 
     return std::string(resolved_path);
+}
+
+
+ssize_t write_all(int fd, const void *buf, size_t count) {
+    const char *p = (const char *)buf;
+    while (count > 0) {
+        ssize_t written = write(fd, p, count);
+        if (written == -1) {
+            if (errno == EINTR || errno == EAGAIN) continue; // Retry
+            return -1; // Other errors
+        }
+        count -= written;
+        p += written;
+    }
+    return 0;
 }