--- /dev/null
+#include "read_write_all.h"
+#include <unistd.h>
+#include <errno.h>
+
+bool write_all(int fd, const void *data, size_t size)
+{
+ while (size) {
+ ssize_t done;
+
+ done = write(fd, data, size);
+ if (done < 0 && errno == EINTR)
+ continue;
+ if (done <= 0)
+ return false;
+ data += done;
+ size -= done;
+ }
+
+ return true;
+}
+
+bool read_all(int fd, void *data, size_t size)
+{
+ while (size) {
+ ssize_t done;
+
+ done = read(fd, data, size);
+ if (done < 0 && errno == EINTR)
+ continue;
+ if (done <= 0)
+ return false;
+ data += done;
+ size -= done;
+ }
+
+ return true;
+}
+