Refactor dcache, add prep for shibari-cache

Signed-off-by: Laurent Bercot <ska@appnovation.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/cache/conf.c b/src/cache/conf.c
new file mode 100644
index 0000000..ea35646
--- /dev/null
+++ b/src/cache/conf.c
@@ -0,0 +1,36 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <string.h>
+
+#include <skalibs/uint32.h>
+#include <skalibs/cdb.h>
+
+#include "shibari-cache-internal.h"
+
+#include <skalibs/posixishard.h>
+
+int conf_getb (cdb const *c, char const *key, size_t keylen, cdb_data *data)
+{
+  if (keylen > 4096) return (errno = EINVAL, 0) ;
+  switch (cdb_find(c, data, key, keylen))
+  {
+    case -1 : return (errno = EILSEQ, 0) ;
+    case 0 : return (errno = ENOENT, 0) ;
+    default : return 1 ;
+  }
+}
+
+int conf_get (cdb const *c, char const *key, cdb_data *data)
+{
+  return conf_get(c, key, strlen(key), data) ;
+}
+
+int conf_get_uint32 (cdb const *c, char const *key, uint32_t *value)
+{
+  cdb_data data ;
+  if (!conf_get(conf, key, &data)) return 0 ;
+  if (data.len != 4) return (errno = EPROTO, 0) ;
+  uint32_unpack_big(data.s, value) ;
+  return 1 ;
+}