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Add a -D flag to ask tmux not to daemonize, useful both for running a

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debugger (lldb does not have follow-fork-mode) and for running with a
managed supervisor init system. GitHub issue 2190.
This commit is contained in:
nicm
2020-05-16 16:07:55 +00:00
parent 126bacb473
commit dceb6a15d0
7 changed files with 73 additions and 25 deletions
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9
proc.c
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@ -37,6 +37,7 @@ struct tmuxproc {
void (*signalcb)(int);
struct event ev_sigint;
struct event ev_sighup;
struct event ev_sigchld;
struct event ev_sigcont;
@ -221,10 +222,13 @@ proc_set_signals(struct tmuxproc *tp, void (*signalcb)(int))
sa.sa_flags = SA_RESTART;
sa.sa_handler = SIG_IGN;
sigaction(SIGINT, &sa, NULL);
sigaction(SIGPIPE, &sa, NULL);
sigaction(SIGTSTP, &sa, NULL);
sigaction(SIGTTIN, &sa, NULL);
sigaction(SIGTTOU, &sa, NULL);
signal_set(&tp->ev_sigint, SIGINT, proc_signal_cb, tp);
signal_add(&tp->ev_sigint, NULL);
signal_set(&tp->ev_sighup, SIGHUP, proc_signal_cb, tp);
signal_add(&tp->ev_sighup, NULL);
signal_set(&tp->ev_sigchld, SIGCHLD, proc_signal_cb, tp);
@ -251,10 +255,10 @@ proc_clear_signals(struct tmuxproc *tp, int defaults)
sa.sa_flags = SA_RESTART;
sa.sa_handler = SIG_DFL;
sigaction(SIGINT, &sa, NULL);
sigaction(SIGPIPE, &sa, NULL);
sigaction(SIGTSTP, &sa, NULL);
signal_del(&tp->ev_sigint);
signal_del(&tp->ev_sighup);
signal_del(&tp->ev_sigchld);
signal_del(&tp->ev_sigcont);
@ -264,6 +268,7 @@ proc_clear_signals(struct tmuxproc *tp, int defaults)
signal_del(&tp->ev_sigwinch);
if (defaults) {
sigaction(SIGINT, &sa, NULL);
sigaction(SIGHUP, &sa, NULL);
sigaction(SIGCHLD, &sa, NULL);
sigaction(SIGCONT, &sa, NULL);