1 files changed, 50 insertions, 0 deletions
diff --git a/src/xsi_strerror.c b/src/xsi_strerror.c
new file mode 100644
index 0000000..d008d4e
--- /dev/null
+++ b/src/xsi_strerror.c
@@ -0,0 +1,50 @@
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2016 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "xsi_strerror.h"
+
+/* Make sure that we get XSI-compliant version of strerror_r */
+#ifdef _POSIX_C_SOURCE
+#  undef _POSIX_C_SOURCE
+#endif /* _POSIX_C_SOURCE */
+
+#ifdef _GNU_SOURCE
+#  undef _GNU_SOURCE
+#endif /* _GNU_SOURCE */
+
+#include <string.h>
+
+char *xsi_strerror(int errnum, char *buf, size_t buflen) {
+  int rv;
+
+  rv = strerror_r(errnum, buf, buflen);
+
+  if (rv != 0) {
+    if (buflen > 0) {
+      buf[0] = '\0';
+    }
+  }
+
+  return buf;
+}