*: code shrink by adding a wrapper around very common tcsetattr(0, TCSANOW, xx) op

function                                             old     new   delta
tcsetattr_stdin_TCSANOW                                -      14     +14
set_sane_term                                        116     113      -3
top_main                                            1277    1273      -4
make_new_session                                     421     415      -6
rawmode                                              133     126      -7
reset_term                                            18      10      -8
die                                                   43      35      -8
cookmode                                              62      54      -8
vlock_main                                           425     415     -10
read_line_input                                     3165    3155     -10
bb_askpass                                           357     347     -10
fsck_minix_main                                     3079    3065     -14
getty_main                                          2375    2332     -43
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/12 up/down: 14/-131)         Total: -117 bytes

4 files changed, 9 insertions, 6 deletions

diff --git a/libbb/bb_askpass.c b/libbb/bb_askpass.c
index fba82a07b..c60ef3708 100644
--- a/libbb/bb_askpass.c
+++ b/libbb/bb_askpass.c
@@ -37,7 +37,7 @@ char* FAST_FUNC bb_askpass(int timeout, const char *prompt)
         tio = oldtio;
         tio.c_iflag &= ~(IUCLC|IXON|IXOFF|IXANY);
         tio.c_lflag &= ~(ECHO|ECHOE|ECHOK|ECHONL|TOSTOP);
-        tcsetattr(STDIN_FILENO, TCSANOW, &tio);
+        tcsetattr_stdin_TCSANOW(&tio);
 
         memset(&sa, 0, sizeof(sa));
         /* sa.sa_flags = 0; - no SA_RESTART! */
@@ -70,7 +70,7 @@ char* FAST_FUNC bb_askpass(int timeout, const char *prompt)
         }
         sigaction_set(SIGINT, &oldsa);
 
-        tcsetattr(STDIN_FILENO, TCSANOW, &oldtio);
+        tcsetattr_stdin_TCSANOW(&oldtio);
         bb_putchar('\n');
         fflush(stdout);
         return ret;
diff --git a/libbb/get_console.c b/libbb/get_console.c
index ad56e740f..74022b543 100644
--- a/libbb/get_console.c
+++ b/libbb/get_console.c
@@ -13,7 +13,6 @@
 /* From <linux/kd.h> */
 enum { KDGKBTYPE = 0x4B33 };  /* get keyboard type */
 
-
 static int open_a_console(const char *fnam)
 {
         int fd;
@@ -37,7 +36,6 @@ static int open_a_console(const char *fnam)
  * We try several things because opening /dev/console will fail
  * if someone else used X (which does a chown on /dev/console).
  */
-
 int FAST_FUNC get_console_fd_or_die(void)
 {
         static const char *const console_names[] = {
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 1f21866ca..3953cc904 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -1436,7 +1436,7 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
 #define _POSIX_VDISABLE '\0'
 #endif
         new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
-        tcsetattr(STDIN_FILENO, TCSANOW, &new_settings);
+        tcsetattr_stdin_TCSANOW(&new_settings);
 
         /* Now initialize things */
         previous_SIGWINCH_handler = signal(SIGWINCH, win_changed);
@@ -1860,7 +1860,7 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
 #endif
 
         /* restore initial_settings */
-        tcsetattr(STDIN_FILENO, TCSANOW, &initial_settings);
+        tcsetattr_stdin_TCSANOW(&initial_settings);
         /* restore SIGWINCH handler */
         signal(SIGWINCH, previous_SIGWINCH_handler);
         fflush(stdout);
diff --git a/libbb/xfuncs.c b/libbb/xfuncs.c
index 8ef305ba0..e2aee136c 100644
--- a/libbb/xfuncs.c
+++ b/libbb/xfuncs.c
@@ -289,3 +289,8 @@ int FAST_FUNC get_terminal_width_height(int fd, unsigned *width, unsigned *heigh
 
         return ret;
 }
+
+int FAST_FUNC tcsetattr_stdin_TCSANOW(const struct termios *tp)
+{
+        return tcsetattr(STDIN_FILENO, TCSANOW, tp);
+}