On Sat, Apr 08, 2023 at 04:28:15PM +0200, p...@mailbox.org wrote: > Hello everyone, > > I bind keyboard shortcut to launch dmenu_extended[1] in dwm, what works > flawlessly before the `Use sigaction(SA_NOCLDWAIT) for SIGCHLD > handling` [1] commit, since dmenu_extended does not change anything here, > is this a regression or bug introduced with this commit or > dmenu_extended need to adapt to conform the change? thanks.
>From sigaction(2): > A child created via fork(2) inherits a copy of its parent's signal > dispositions. > During an execve(2), the dispositions of handled signals are reset to the > default; > the dispositions of ignored signals are left unchanged. This would explain why running programs affected by this through st works, since it runs "signal(SIGCHLD, SIG_DFL)" before executing the shell (st.c:715). Adding "signal(SIGCHLD, SIG_DFL)" before execvp in spawn() at dwm.c:1657 fixes anki and mpv with youtube-dl for me. > > [1] https://github.com/MarkHedleyJones/dmenu-extended/ > [2] > https://git.suckless.org/dwm/commit/712d6639ff8e863560328131bbb92b248dc9cde7.html >
