bbconfig: make it independent from printf functions

function                                             old     new   delta
full_write2_str                                        -      25     +25
full_write1_str                                        -      25     +25
clear_main                                            21      20      -1
telnet_main                                         1488    1477     -11
getty_main                                          1932    1918     -14
full_write22_str                                      25       -     -25
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 0/3 up/down: 50/-51)             Total: -1 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

2 files changed, 10 insertions, 7 deletions

diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index 6267f2673..f3d530184 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -98,13 +98,6 @@ static const char *unpack_usage_messages(void)
 #endif /* FEATURE_COMPRESS_USAGE */
 
 
-static void full_write2_str(const char *str)
-{
-        // This uses stdio:
-        //xwrite_str(STDERR_FILENO, str);
-        write(STDERR_FILENO, str, strlen(str));
-}
-
 void FAST_FUNC bb_show_usage(void)
 {
         if (ENABLE_SHOW_USAGE) {
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 6200fc600..1cd8d7c01 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -204,6 +204,16 @@ int FAST_FUNC bb_putchar_stderr(char ch)
         return write(STDERR_FILENO, &ch, 1);
 }
 
+ssize_t FAST_FUNC full_write1_str(const char *str)
+{
+        return full_write(STDOUT_FILENO, str, strlen(str));
+}
+
+ssize_t FAST_FUNC full_write2_str(const char *str)
+{
+        return full_write(STDERR_FILENO, str, strlen(str));
+}
+
 static int wh_helper(int value, int def_val, const char *env_name, int *err)
 {
         if (value == 0) {