block: add support to prealloc = full | no option

currently we allocate sparse files for block backends in the gluster
volume, with 'prealloc = full' option introduced by this patch we should
be able to fully preallocate the backend block file.

Change-Id: Ibf32df5f978f732a3fd248693170463da6d08268
Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>

2 files changed, 73 insertions, 0 deletions

diff --git a/utils/common.c b/utils/common.c
index c6d1c34..8a8f303 100644
--- a/utils/common.c
+++ b/utils/common.c
@@ -121,3 +121,28 @@ glusterBlockFormatSize(const char *dom, size_t bytes)
 
   return buf;
 }
+
+
+/* Return value and meaning
+ *  1  - true/set
+ *  0  - false/unset
+ * -1  - unknown string
+ */
+int
+convertStringToTrillianParse(const char *opt)
+{
+  int i;
+
+
+  if (!opt) {
+    return -1;
+  }
+
+  for (i = 1; i < GB_BOOL_MAX; i++) {
+    if (!strcmp(opt, ConvertStringToTrillianLookup[i])) {
+      return i%2;
+    }
+  }
+
+  return -1;
+}
diff --git a/utils/common.h b/utils/common.h
index 118d3f0..6503218 100644
--- a/utils/common.h
+++ b/utils/common.h
@@ -50,10 +50,58 @@ static const char *const JsonResponseFormatLookup[] = {
 };
 
 
+/* Always add new boolean data in a way that, word with jist
+ * 'yes/true' first to assign a odd number to it */
+typedef enum  ConvertStringToTrillian {
+  GB_BOOL_YES             = 1,
+  GB_BOOL_NO              = 2,
+
+  GB_BOOL_TRUE            = 3,
+  GB_BOOL_FALSE           = 4,
+
+  GB_BOOL_ENABLE          = 5,
+  GB_BOOL_DISABLE         = 6,
+
+  GB_BOOL_ONE             = 7,
+  GB_BOOL_ZERO            = 8,
+
+  GB_BOOL_SET             = 9,
+  GB_BOOL_UNSET           = 10,
+
+  GB_BOOL_FULL            = 11,
+
+  GB_BOOL_MAX
+} ConvertStringToBool;
+
+
+static const char *const ConvertStringToTrillianLookup[] = {
+  [GB_BOOL_YES]             = "yes",
+  [GB_BOOL_NO]              = "no",
+
+  [GB_BOOL_TRUE]            = "true",
+  [GB_BOOL_FALSE]           = "false",
+
+  [GB_BOOL_ENABLE]          = "enable",
+  [GB_BOOL_DISABLE]         = "disable",
+
+  [GB_BOOL_ONE]             = "1",   /* true */
+  [GB_BOOL_ZERO]            = "0",
+
+  [GB_BOOL_SET]             = "set",
+  [GB_BOOL_UNSET]           = "unset",
+
+  [GB_BOOL_FULL]            = "full",
+
+  [GB_BOOL_MAX]             = NULL,
+};
+
+
 enum JsonResponseFormat jsonResponseFormatParse(const char *opt);
 
 ssize_t glusterBlockParseSize(const char *dom, char *value);
 
 char* glusterBlockFormatSize(const char *dom, size_t bytes);
 
+int convertStringToTrillianParse(const char *opt);
+
 # endif /* _COMMON_H */