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kvm: save/restore std ttys

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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov
2015-06-01 16:39:41 +01:00
committed by Will Deacon
parent 7c3b4e4b0d
commit 176db3d6c9
1 changed files with 21 additions and 0 deletions
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main.c
+21
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@@ -30,6 +30,24 @@ static void usage(char *argv[])
static struct kvm *kvm;
static struct termios tty_origin_stdin;
static struct termios tty_origin_stdout;
static struct termios tty_origin_stderr;
static void tty_save_origins(void)
{
tcgetattr(fileno(stdin), &tty_origin_stdin);
tcgetattr(fileno(stdout), &tty_origin_stdout);
tcgetattr(fileno(stderr), &tty_origin_stderr);
}
static void tty_restore_origins(void)
{
tcsetattr(fileno(stdin), TCSAFLUSH, &tty_origin_stdin);
tcsetattr(fileno(stdout), TCSAFLUSH, &tty_origin_stdout);
tcsetattr(fileno(stderr), TCSAFLUSH, &tty_origin_stderr);
}
static void tty_set_canon_flag(int fd, int on)
{
struct termios tty;
@@ -46,6 +64,7 @@ static void tty_set_canon_flag(int fd, int on)
static void shutdown(void)
{
tty_set_canon_flag(fileno(stdin), 0);
tty_restore_origins();
}
static void handle_sigint(int sig)
@@ -123,6 +142,8 @@ int main(int argc, char *argv[])
bool single_step = false;
int i;
tty_save_origins();
atexit(shutdown);
signal(SIGQUIT, handle_sigquit);