1 files changed, 52 insertions, 0 deletions
diff --git a/Linux-PAM/modules/pammodutil/modutil_ioloop.c b/Linux-PAM/modules/pammodutil/modutil_ioloop.c
new file mode 100644
index 00000000..37ac76fc
--- /dev/null
+++ b/Linux-PAM/modules/pammodutil/modutil_ioloop.c
@@ -0,0 +1,52 @@
+/*
+ * $Id: modutil_ioloop.c,v 1.2 2004/09/24 09:18:22 kukuk Exp $
+ *
+ * These functions provides common methods for ensure a complete read or
+ * write occurs. It handles EINTR and partial read/write returns.
+ */
+
+#include <unistd.h>
+#include <errno.h>
+
+#include <security/pam_modules.h>
+#include "include/security/_pam_modutil.h"
+
+int _pammodutil_read(int fd, char *buffer, int count)
+{
+       int block, offset = 0;
+
+       while (count > 0) {
+               block = read(fd, &buffer[offset], count);
+
+               if (block < 0) {
+                       if (errno == EINTR) continue;
+                       return block;
+               }
+               if (block == 0) return offset;
+
+               offset += block;
+               count -= block;
+       }
+
+       return offset;
+}
+
+int _pammodutil_write(int fd, const char *buffer, int count)
+{
+       int block, offset = 0;
+
+       while (count > 0) {
+               block = write(fd, &buffer[offset], count);
+
+               if (block < 0) {
+                       if (errno == EINTR) continue;
+                       return block;
+               }
+               if (block == 0) return offset;
+
+               offset += block;
+               count -= block;
+       }
+
+       return offset;
+}