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-rw-r--r--lib/util/write_retry.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/lib/util/write_retry.c b/lib/util/write_retry.c
new file mode 100644
index 0000000..637b5d2
--- /dev/null
+++ b/lib/util/write_retry.c
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+#include <unistd.h>
+#include <errno.h>
+
+#include "util.h"
+
+ssize_t write_retry(int fd, void *data, size_t size)
+{
+ ssize_t ret, total = 0;
+
+ while (size > 0) {
+ ret = write(fd, data, size);
+ if (ret == 0)
+ break;
+ if (ret < 0) {
+ if (errno == EINTR)
+ continue;
+ return -1;
+ }
+
+ data = (char *)data + ret;
+ size -= ret;
+ total += ret;
+ }
+
+ return total;
+}