1 files changed, 31 insertions, 0 deletions

diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 313e32814..4790aa140 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -411,6 +411,37 @@ char *xasprintf(const char *format, ...)
         return string_ptr;
 }
 
+#ifdef __dietlibc__
+int dprintf(int fd, const char *format, ...)
+{
+        va_list p;
+        int r;
+        char *string_ptr;
+
+#if 1
+        // GNU extension
+        va_start(p, format);
+        r = vasprintf(&string_ptr, format, p);
+        va_end(p);
+#else
+        // Bloat for systems that haven't got the GNU extension.
+        va_start(p, format);
+        r = vsnprintf(NULL, 0, format, p);
+        va_end(p);
+        string_ptr = xmalloc(r+1);
+        va_start(p, format);
+        r = vsnprintf(string_ptr, r+1, format, p);
+        va_end(p);
+#endif
+
+        if (r >= 0) {
+                full_write(fd, string_ptr, r);
+                free(string_ptr);
+        }
+        return r;
+}
+#endif
+
 // Die with an error message if we can't copy an entire FILE * to stdout, then
 // close that file.
 void xprint_and_close_file(FILE *file)