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commit 60ac52c4b9105422638dfacab20fc8f8486832c1 Author: chenzihan1 <[email protected]> AuthorDate: Wed Aug 20 22:13:30 2025 +0800 sim_hostuart.c: add nonblock flags for /dev/console to avoid the blocking indefinitely when the host uart is not ready to read/write data. Signed-off-by: chenzihan1 <[email protected]> --- arch/sim/src/sim/posix/sim_hostuart.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/sim/src/sim/posix/sim_hostuart.c b/arch/sim/src/sim/posix/sim_hostuart.c index 04254bc8828..4976aadd902 100644 --- a/arch/sim/src/sim/posix/sim_hostuart.c +++ b/arch/sim/src/sim/posix/sim_hostuart.c @@ -95,6 +95,8 @@ static void restoremode(void) void host_uart_start(void) { + int flags; + /* Get the current stdin terminal mode */ tcgetattr(0, &g_cooked); @@ -103,6 +105,12 @@ void host_uart_start(void) setrawmode(0); + flags = host_uninterruptible(fcntl, 0, F_GETFL, 0); + if (flags > 0) + { + host_uninterruptible_no_return(fcntl, 0, F_SETFL, flags | O_NONBLOCK); + } + /* Restore the original terminal mode before exit */ atexit(restoremode);
