Resolve issues in init.c in new busybox

[ntadmin]

diff for init.c (1.13.4 vs 1.13.4 Netgear modded), as this seems likely to trash boot up ...

36,37c36
< //#define INIT_SCRIPT  "/etc/init.d/rcS"      /* Default sysinit script. */
< #define INIT_SCRIPT  "/usr/etc/rcS"   /* Default sysinit script. */

---
> #define INIT_SCRIPT  "/etc/init.d/rcS"        /* Default sysinit script. */
693c692
<               new_init_action(ASKFIRST, bb_default_login_shell, "/dev/ttyS0");

---
>               new_init_action(ASKFIRST, bb_default_login_shell, "");
695,697c694,696
< //            new_init_action(ASKFIRST, bb_default_login_shell, VC_2);
< //            new_init_action(ASKFIRST, bb_default_login_shell, VC_3);
< //            new_init_action(ASKFIRST, bb_default_login_shell, VC_4);

---
>               new_init_action(ASKFIRST, bb_default_login_shell, VC_2);
>               new_init_action(ASKFIRST, bb_default_login_shell, VC_3);
>               new_init_action(ASKFIRST, bb_default_login_shell, VC_4);
699c698
<               new_init_action(SYSINIT, INIT_SCRIPT, "/dev/console");

---
>               new_init_action(SYSINIT, INIT_SCRIPT, "");

Seems to:

• Change default boot script
• Alter default login shells
• Change how the init script is handled

[ntadmin]

INIT_SCRIPT is only set in the code if it hasn't already been set. So, if we can set this from the make command, then all is good. this can be done by modifying our packages Makefile: https://github.com/ntadmin/DGND3700v2/commit/e72d8ce745d94dddf6f64b32d4c38d31f23d50dc

[ntadmin]

The other lines:

1. Change it to only have one default 'askfirst' shell, and to put it on /dev/ttyS0, rather than 4 on tty1-4. The device only seems to
2. Set the init script to run on /dev/console rather than some kind of default.gG

ls -al of the relevant /dev entries:

crw-r--r--    1 root     root       5,   1 Jul 18 15:11 console
crw-r--r--    1 root     root       5,   0 May 13  2010 tty
crw-r--r--    1 root     root       4,   0 May 13  2010 tty0
crw-r--r--    1 root     root       4,   1 May 13  2010 tty1
crw-r--r--    1 root     root       4,  64 Jan  1  1970 ttyS0
crw-r--r--    1 root     root       4,  65 May 13  2010 ttyS1

[ntadmin]

Key question: what happens if we get the /dev things wrong?

[ntadmin]

OK, busybox now has the init script correct in it, it seems to point to /usr/etc/rcS. How to tell if it works?

[ntadmin]

Tested and it now boots with only the updated busybox in it.