irestore SIGCHLD sighandler to default before spawning a program - dwm - dynamic window manager	Err	parazyd.org	70
hgit clone https://git.parazyd.org/dwm	URL:https://git.parazyd.org/dwm	parazyd.org	70
1Log	/git/dwm/log.gph	parazyd.org	70
1Files	/git/dwm/files.gph	parazyd.org	70
1Refs	/git/dwm/refs.gph	parazyd.org	70
1README	/git/dwm/file/README.gph	parazyd.org	70
1LICENSE	/git/dwm/file/LICENSE.gph	parazyd.org	70
i---	Err	parazyd.org	70
1commit e81f17d4c196aaed6893fd4beed49991caa3e2a4	/git/dwm/commit/e81f17d4c196aaed6893fd4beed49991caa3e2a4.gph	parazyd.org	70
1parent 348f6559ab0d4793db196ffa56ba96ab95a594a6	/git/dwm/commit/348f6559ab0d4793db196ffa56ba96ab95a594a6.gph	parazyd.org	70
hAuthor: Hiltjo Posthuma <hiltjo@codemadness.org>	URL:mailto:hiltjo@codemadness.org	parazyd.org	70
iDate:   Sun,  9 Apr 2023 12:37:14 +0200	Err	parazyd.org	70
i	Err	parazyd.org	70
irestore SIGCHLD sighandler to default before spawning a program	Err	parazyd.org	70
i	Err	parazyd.org	70
iFrom sigaction(2):	Err	parazyd.org	70
iA child created via fork(2) inherits a copy of its parent's signal dispositions.	Err	parazyd.org	70
iDuring an execve(2), the dispositions of handled signals are reset to the default;	Err	parazyd.org	70
ithe dispositions of ignored signals are left unchanged.	Err	parazyd.org	70
i	Err	parazyd.org	70
iThis refused to start directly some programs from configuring in config.h:	Err	parazyd.org	70
i	Err	parazyd.org	70
istatic Key keys[] = {	Err	parazyd.org	70
i        MODKEY,                       XK_o,      spawn,          {.v = cmd } },	Err	parazyd.org	70
i};	Err	parazyd.org	70
i	Err	parazyd.org	70
iSome reported programs that didn't start were: mpv, anki, dmenu_extended.	Err	parazyd.org	70
i	Err	parazyd.org	70
iReported by pfx.	Err	parazyd.org	70
iInitial patch suggestion by Storkman.	Err	parazyd.org	70
i	Err	parazyd.org	70
iDiffstat:	Err	parazyd.org	70
i  M dwm.c                               |       8 ++++++++	Err	parazyd.org	70
i	Err	parazyd.org	70
i1 file changed, 8 insertions(+), 0 deletions(-)	Err	parazyd.org	70
i---	Err	parazyd.org	70
1diff --git a/dwm.c b/dwm.c	/git/dwm/file/dwm.c.gph	parazyd.org	70
i@@ -1647,12 +1647,20 @@ showhide(Client *c)	Err	parazyd.org	70
i void	Err	parazyd.org	70
i spawn(const Arg *arg)	Err	parazyd.org	70
i {	Err	parazyd.org	70
i+        struct sigaction sa;	Err	parazyd.org	70
i+	Err	parazyd.org	70
i         if (arg->v == dmenucmd)	Err	parazyd.org	70
i                 dmenumon[0] = '0' + selmon->num;	Err	parazyd.org	70
i         if (fork() == 0) {	Err	parazyd.org	70
i                 if (dpy)	Err	parazyd.org	70
i                         close(ConnectionNumber(dpy));	Err	parazyd.org	70
i                 setsid();	Err	parazyd.org	70
i+	Err	parazyd.org	70
i+                sigemptyset(&sa.sa_mask);	Err	parazyd.org	70
i+                sa.sa_flags = 0;	Err	parazyd.org	70
i+                sa.sa_handler = SIG_DFL;	Err	parazyd.org	70
i+                sigaction(SIGCHLD, &sa, NULL);	Err	parazyd.org	70
i+	Err	parazyd.org	70
i                 execvp(((char **)arg->v)[0], (char **)arg->v);	Err	parazyd.org	70
i                 die("dwm: execvp '%s' failed:", ((char **)arg->v)[0]);	Err	parazyd.org	70
i         }	Err	parazyd.org	70
.