commit 97ba13b1eb4756fb1a024fd1e83df6e393befd27
Author: Hiltjo Posthuma <[email protected]>
AuthorDate: Sun Apr 9 12:47:07 2023 +0200
Commit: Hiltjo Posthuma <[email protected]>
CommitDate: Sun Apr 9 12:47:07 2023 +0200
restore SIGCHLD sighandler to default before spawning a program
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 refused to start directly some programs from configuring in config.h:
Some reported programs that didn't start were: mpv.
Similar to the commit e81f17d4c196aaed6893fd4beed49991caa3e2a4 from dwm.
diff --git a/tabbed.c b/tabbed.c
index 1b61d93..81be5e4 100644
--- a/tabbed.c
+++ b/tabbed.c
@@ -1088,11 +1088,19 @@ setup(void)
void
spawn(const Arg *arg)
{
+ struct sigaction sa;
+
if (fork() == 0) {
if(dpy)
close(ConnectionNumber(dpy));
setsid();
+
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = 0;
+ sa.sa_handler = SIG_DFL;
+ sigaction(SIGCHLD, &sa, NULL);
+
if (arg && arg->v) {
execvp(((char **)arg->v)[0], (char **)arg->v);
fprintf(stderr, "%s: execvp %s", argv0,
