init: test for vt terminal with VT_OPENQRY,

 assume that anything else is TERM=vt102, not TERM=linux.
 (Serial console test is less correct)
 Tentatively closes bug 195.

function                                             old     new   delta
init_main                                            946     919     -27

diff --git a/init/init.c b/init/init.c
index 5c344cb..ce26428 100644 (file)
--- a/init/init.c
+++ b/init/init.c
@@ -14,6 +14,7 @@
 #include <paths.h>
 #include <sys/reboot.h>
 #include <sys/resource.h>
+#include <linux/vt.h>
 
 
 /* Was a CONFIG_xxx option. A lot of people were building
@@ -161,33 +162,9 @@ static void message(int where, const char *fmt, ...)
        }
 }
 
-/* From <linux/serial.h> */
-struct serial_struct {
-       int     type;
-       int     line;
-       unsigned int    port;
-       int     irq;
-       int     flags;
-       int     xmit_fifo_size;
-       int     custom_divisor;
-       int     baud_base;
-       unsigned short  close_delay;
-       char    io_type;
-       char    reserved_char[1];
-       int     hub6;
-       unsigned short  closing_wait; /* time to wait before closing */
-       unsigned short  closing_wait2; /* no longer used... */
-       unsigned char   *iomem_base;
-       unsigned short  iomem_reg_shift;
-       unsigned int    port_high;
-       unsigned long   iomap_base;     /* cookie passed into ioremap */
-       int     reserved[1];
-       /* Paranoia (imagine 64bit kernel overwriting 32bit userspace stack) */
-       uint32_t bbox_reserved[16];
-};
 static void console_init(void)
 {
-       struct serial_struct sr;
+       int vtno;
        char *s;
 
        s = getenv("CONSOLE");
@@ -211,8 +188,9 @@ static void console_init(void)
        }
 
        s = getenv("TERM");
-       if (ioctl(STDIN_FILENO, TIOCGSERIAL, &sr) == 0) {
-               /* Force the TERM setting to vt102 for serial console
+       if (ioctl(STDIN_FILENO, VT_OPENQRY, &vtno) != 0) {
+               /* Not a linux terminal, probably serial console.
+                * Force the TERM setting to vt102
                 * if TERM is set to linux (the default) */
                if (!s || strcmp(s, "linux") == 0)
                        putenv((char*)"TERM=vt102");