1 files changed, 33 insertions, 0 deletions

diff --git a/nacl/curvecp/load.c b/nacl/curvecp/load.c
new file mode 100644
index 00000000..0cd4e43d
--- /dev/null
+++ b/nacl/curvecp/load.c
@@ -0,0 +1,33 @@
+#include <unistd.h>
+#include "open.h"
+#include "e.h"
+#include "load.h"
+
+static int readall(int fd,void *x,long long xlen)
+{
+  long long r;
+  while (xlen > 0) {
+    r = xlen;
+    if (r > 1048576) r = 1048576;
+    r = read(fd,x,r);
+    if (r == 0) errno = EPROTO;
+    if (r <= 0) {
+      if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK) continue;
+      return -1;
+    }
+    x += r;
+    xlen -= r;
+  }
+  return 0;
+}
+
+int load(const char *fn,void *x,long long xlen)
+{
+  int fd;
+  int r;
+  fd = open_read(fn);
+  if (fd == -1) return -1;
+  r = readall(fd,x,xlen);
+  close(fd);
+  return r;
+}