Save/restore errno in all safe wrappers

1 files changed, 6 insertions, 11 deletions

diff --git a/src/libstddjb/iopause_stamp.c b/src/libstddjb/iopause_stamp.c
index a2ac8fa..890909b 100644
--- a/src/libstddjb/iopause_stamp.c
+++ b/src/libstddjb/iopause_stamp.c
@@ -1,22 +1,17 @@
 /* ISC license. */
 
 #include <errno.h>
+
 #include <skalibs/tai.h>
 #include <skalibs/iopause.h>
 
 int iopause_stamp (iopause_fd *x, unsigned int n, tain const *deadline, tain *stamp)
 {
+  int e = errno ;
   int r ;
-  do
-  {
-    r = iopause(x, n, deadline, stamp) ;
-    if (stamp)
-    {
-      int e = errno ;
-      tain_now(stamp) ;
-      errno = e ;
-    }
-  }
-  while ((r < 0) && (errno == EINTR)) ;
+  do r = iopause(x, n, deadline, stamp) ;
+  while (r == -1 && errno == EINTR) ;
+  if (stamp) tain_now(stamp) ;
+  if (r >= 0) errno = e ;
   return r ;
 }