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macOS needs SIGTTOU SIGTTIN explicitly ignored to allow the supervisor to use TIOCSWINSZ

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This commit is contained in:
Kovid Goyal 2022-07-13 15:05:08 +05:30
parent be458303c5
commit 4eedf0d36c
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 10 additions and 6 deletions
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16
kitty/prewarm.py
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@ -48,9 +48,6 @@ def restore_python_signal_handlers() -> None:
signal.signal(signal.SIGPIPE, signal.SIG_IGN)
signal.signal(signal.SIGUSR1, signal.SIG_DFL)
signal.signal(signal.SIGCHLD, signal.SIG_DFL)
signal.signal(signal.SIGTSTP, signal.SIG_DFL)
signal.signal(signal.SIGTTIN, signal.SIG_DFL)
signal.signal(signal.SIGTTOU, signal.SIG_DFL)
def print_error(*a: Any) -> None:
@ -397,6 +394,11 @@ def eintr_retry(func: Callable[..., T], *args: Any) -> T:
return func(*args)
interactive_and_job_control_signals = (
signal.SIGINT, signal.SIGQUIT, signal.SIGTSTP, signal.SIGTTIN, signal.SIGTTOU
)
def fork_socket_child(child_data: SocketChildData, tty_fd: int, stdio_fds: Dict[str, int], free_non_child_resources: Callable[[], None]) -> int:
# see https://www.gnu.org/software/libc/manual/html_node/Launching-Jobs.html
child_pid = safer_fork()
@ -405,6 +407,8 @@ def fork_socket_child(child_data: SocketChildData, tty_fd: int, stdio_fds: Dict[
# child process
eintr_retry(os.setpgid, 0, 0)
eintr_retry(os.tcsetpgrp, tty_fd, eintr_retry(os.getpgid, 0))
for x in interactive_and_job_control_signals:
signal.signal(x, signal.SIG_DFL)
restore_python_signal_handlers()
# the std streams fds are closed in free_non_child_resources()
for which in ('stdin', 'stdout', 'stderr'):
@ -426,10 +430,10 @@ def fork_socket_child_supervisor(conn: socket.socket, free_non_child_resources:
os.setsid()
restore_python_signal_handlers()
free_non_child_resources()
signal_read_fd = install_signal_handlers(signal.SIGCHLD, signal.SIGUSR1)[0]
# See https://www.gnu.org/software/libc/manual/html_node/Initializing-the-Shell.html
signal_read_fd = install_signal_handlers(
signal.SIGCHLD, signal.SIGUSR1, signal.SIGINT, signal.SIGTSTP, signal.SIGTTIN, signal.SIGTTOU, signal.SIGQUIT
)[0]
for x in interactive_and_job_control_signals:
signal.signal(x, signal.SIG_IGN)
poll = select.poll()
poll.register(signal_read_fd, select.POLLIN)
from_socket_buf = b''