1 files changed, 24 insertions, 0 deletions
diff --git a/src/libunixonacid/openwritenclose_at.c b/src/libunixonacid/openwritenclose_at.c
new file mode 100644
index 0000000..fe92a5e
--- /dev/null
+++ b/src/libunixonacid/openwritenclose_at.c
@@ -0,0 +1,24 @@
+/* ISC license. */
+
+#include <unistd.h>
+#include <errno.h>
+#include <skalibs/allreadwrite.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/unix-transactional.h>
+
+unsigned int openwritenclose_at (int dirfd, char const *file, char const *s, unsigned int n)
+{
+  register unsigned int r ;
+  int fd = open_truncatb(dirfd, file) ;
+  if (fd < 0) return 0 ;
+  r = allwrite(fd, s, n) ;
+  if ((r < n) || (fsync(fd) < 0))
+  {
+    register int e = errno ;
+    fd_close(fd) ;
+    errno = e ;
+    return r ;
+  }
+  fd_close(fd) ;
+  return r ;
+}