diff options
| -rw-r--r-- | qemu-char.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/qemu-char.c b/qemu-char.c index 2a3cb9fb05..8623c70964 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -1017,6 +1017,7 @@ static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) /* init terminal so that we can grab keys */ static struct termios oldtty; static int old_fd0_flags; +static bool stdio_in_use; static bool stdio_allow_signal; static void term_exit(void) @@ -1060,8 +1061,15 @@ static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) error_report("cannot use stdio with -daemonize"); return NULL; } + + if (stdio_in_use) { + error_report("cannot use stdio by multiple character devices"); + exit(1); + } + + stdio_in_use = true; old_fd0_flags = fcntl(0, F_GETFL); - tcgetattr (0, &oldtty); + tcgetattr(0, &oldtty); qemu_set_nonblock(0); atexit(term_exit); |