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kboot: Make console raw when we start

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Put the console into raw mode on startup. This allows the menus to work
as expected. Boot is now interruptable.

Note: Likely should restore the terminal settings on most exists.  It's
not clear the best way to do this, and most shells have an auto stty
sane anyway, so note it for future improvement.

Sponsored by:		Netflix
This commit is contained in:
Warner Losh 2022-07-26 17:39:45 -06:00
parent 963037786f
commit 9579540144
1 changed files with 8 additions and 3 deletions
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11
stand/kboot/hostcons.c
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@ -29,6 +29,7 @@ __FBSDID("$FreeBSD$");
#include <sys/types.h>
#include "bootstrap.h"
#include "host_syscall.h"
#include "termios.h"
static void hostcons_probe(struct console *cp);
static int hostcons_init(int arg);
@ -47,6 +48,8 @@ struct console hostconsole = {
hostcons_poll,
};
static struct host_termios old_settings;
static void
hostcons_probe(struct console *cp)
{
@ -57,9 +60,12 @@ hostcons_probe(struct console *cp)
static int
hostcons_init(int arg)
{
struct host_termios new_settings;
/* XXX: set nonblocking */
/* tcsetattr(~(ICANON | ECHO)) */
host_tcgetattr(0, &old_settings);
new_settings = old_settings;
host_cfmakeraw(&new_settings);
host_tcsetattr(0, HOST_TCSANOW, &new_settings);
return (0);
}
@ -94,4 +100,3 @@ hostcons_poll()
ret = host_select(32, &fds, NULL, NULL, &tv);
return (ret > 0);
}