util: Add xasprintf portable asprintf variant

Include a portable asprintf variant that works on any C99
conforming platform.

Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/util.h b/util.h
index f800b60..f5c4f1b 100644
--- a/util.h
+++ b/util.h
@@ -59,6 +59,7 @@ static inline void *xrealloc(void *p, size_t len)
 }
 
 extern char *xstrdup(const char *s);
+extern int xasprintf(char **strp, const char *fmt, ...);
 extern char *join_path(const char *path, const char *name);
 
 /**