Add safe wrappers to manage EINTR

1 files changed, 63 insertions, 0 deletions

diff --git a/safe.c b/safe.c
new file mode 100644
index 0000000..5b3b870
--- /dev/null
+++ b/safe.c
@@ -0,0 +1,63 @@
+/* ########################################################### */
+/* This Software is licensed under the GPL licensed Version 2, */
+/* please read http://www.gnu.org/copyleft/gpl.html            */
+/* ########################################################### */
+
+/* ************************************ */
+/* Some wrappers to manage EINTR errors */
+/* ************************************ */
+
+#include <stdio.h>
+#include <termios.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "safe.h"
+
+FILE *
+fopen_safe(const char * restrict stream, const char * restrict mode)
+{
+  FILE * file;
+
+  while ((file = fopen(stream, mode)) == NULL && errno == EINTR)
+    ;
+
+  return file;
+}
+
+int
+tcsetattr_safe(int fildes, int optional_actions,
+               const struct termios * termios_p)
+{
+  int res;
+
+  while ((res = tcsetattr(fildes, optional_actions, termios_p)) == -1
+         && errno == EINTR)
+    ;
+
+  return res;
+}
+
+int
+fputc_safe(int c, FILE * stream)
+{
+  int res;
+
+  while ((res = fputc(c, stream)) == -1 && errno == EINTR)
+    ;
+
+  return res;
+}
+
+int
+fputs_safe(const char * restrict s, FILE * restrict stream)
+{
+  int res;
+
+  while ((res = fputs(s, stream)) == -1 && errno == EINTR)
+    ;
+
+  return res;
+}