.

1 files changed, 29 insertions, 0 deletions

diff --git a/safe_write.c b/safe_write.c
new file mode 100644
index 0000000..aad50f5
--- /dev/null
+++ b/safe_write.c
@@ -0,0 +1,29 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+#include "libbb.h"
+
+ssize_t FAST_FUNC safe_write(int fd, const void *buf, size_t count)
+{
+	ssize_t n;
+
+	for (;;) {
+		n = write(fd, buf, count);
+		if (n >= 0 || errno != EINTR)
+			break;
+		/* Some callers set errno=0, are upset when they see EINTR.
+		 * Returning EINTR is wrong since we retry write(),
+		 * the "error" was transient.
+		 */
+		errno = 0;
+		/* repeat the write() */
+	}
+
+	return n;
+}