1 files changed, 24 insertions, 0 deletions
diff --git a/src/libstddjb/cdb_read.c b/src/libstddjb/cdb_read.c
new file mode 100644
index 0000000..76fbd63
--- /dev/null
+++ b/src/libstddjb/cdb_read.c
@@ -0,0 +1,24 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/error.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/allreadwrite.h>
+#include <skalibs/uint32.h>
+#include <skalibs/djbunix.h>
+#include <skalibs/cdb.h>
+
+int cdb_read (struct cdb *c, char *buf, unsigned int len, uint32 pos)
+{
+  if (c->map)
+  {
+    if ((pos > c->size) || (c->size - pos < len)) return (errno = EPROTO, -1) ;
+    byte_copy(buf, len, c->map + pos) ;
+  }
+  else
+  {
+    if (seek_set(c->fd, pos) < 0) return -1 ;
+    if (allread(c->fd, buf, len) < len) return -1 ;
+  }
+  return 0 ;
+}