Rewrite openwrite(v)nclose using mkstemp

1 files changed, 20 insertions, 0 deletions

diff --git a/src/libstddjb/writevnclose_unsafe.c b/src/libstddjb/writevnclose_unsafe.c
new file mode 100644
index 0000000..9d2348a
--- /dev/null
+++ b/src/libstddjb/writevnclose_unsafe.c
@@ -0,0 +1,20 @@
+/* ISC license. */
+
+#include <sys/uio.h>
+#include <sys/stat.h>
+#include <errno.h>
+#include <skalibs/allreadwrite.h>
+#include <skalibs/siovec.h>
+#include <skalibs/djbunix.h>
+
+int writevnclose_unsafe_internal (int fd, struct iovec const *v, unsigned int vlen, dev_t *dev, ino_t *ino, int dosync)
+{
+  struct stat st ;
+  if (allwritev(fd, v, vlen) < siovec_len(v, vlen)) return 0 ;
+  if ((dev || ino) && (fstat(fd, &st) < 0)) return 0 ;
+  if (dosync && (fd_sync(fd) < 0) && (errno != EINVAL)) return 0 ;
+  fd_close(fd) ;
+  if (dev) *dev = st.st_dev ;
+  if (ino) *ino = st.st_ino ;
+  return 1 ;
+}