Use stdbool more widely

We already use the C99 bool type from stdbool.h in a few places.  However
there are many other places we represent boolean values as plain ints.
This patch changes that.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 2 insertions, 1 deletions

diff --git a/util.h b/util.h
index 8f40b44..ccfdf4b 100644
--- a/util.h
+++ b/util.h
@@ -2,6 +2,7 @@
 #define _UTIL_H
 
 #include <stdarg.h>
+#include <stdbool.h>
 #include <getopt.h>
 
 /*
@@ -68,7 +69,7 @@ extern char *join_path(const char *path, const char *name);
  * @param len	The string length including terminator
  * @return 1 if a valid printable string, 0 if not
  */
-int util_is_printable_string(const void *data, int len);
+bool util_is_printable_string(const void *data, int len);
 
 /*
  * Parse an escaped character starting at index i in string s.  The resulting