1 files changed, 36 insertions, 0 deletions
diff --git a/otherlibs/unix/errmsg.c b/otherlibs/unix/errmsg.c
new file mode 100644
index 000000000..d3efc8414
--- /dev/null
+++ b/otherlibs/unix/errmsg.c
@@ -0,0 +1,36 @@
+#include <errno.h>
+#include <mlvalues.h>
+#include <alloc.h>
+
+extern int error_table[];
+
+#ifdef HAS_STRERROR
+
+#include <string.h>
+
+value unix_error_message(err)
+     value err;
+{
+  int errnum;
+  errnum = error_table[Tag_val(err)];
+  return copy_string(strerror(errno));
+}
+
+#else
+
+extern int sys_nerr;
+extern char *sys_errlist[];
+
+value unix_error_message(err)
+     value err;
+{
+  int errnum;
+  errnum = error_table[Tag_val(err)];
+  if (errnum < 0 || errnum >= sys_nerr) {
+    return copy_string("Unknown error");
+  } else {
+    return copy_string(sys_errlist[errnum]);
+  }
+}
+
+#endif