From 06710ebd054f2658f2b46e7c784eea51d58bb72d Mon Sep 17 00:00:00 2001
From: Mark Caudill <mark@mrkc.me>
Date: Wed, 1 Apr 2020 11:45:00 -0400
Subject: Proposed fix for issue #5.
Initialize all signals from RTMIN to RTMAX with a dummy handler before
actually setting the "real" handlers.
---
dwmblocks.c | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
(limited to 'dwmblocks.c')
diff --git a/dwmblocks.c b/dwmblocks.c
index 88bdfb0..7d4616d 100644
--- a/dwmblocks.c
+++ b/dwmblocks.c
@@ -13,6 +13,7 @@ typedef struct {
unsigned int interval;
unsigned int signal;
} Block;
+void dummysighandler(int num);
void sighandler(int num);
void replace(char *str, char old, char new);
void getcmds(int time);
@@ -67,7 +68,7 @@ void getcmds(int time)
{
const Block* current;
for(int i = 0; i < LENGTH(blocks); i++)
- {
+ {
current = blocks + i;
if ((current->interval != 0 && time % current->interval == 0) || time == -1)
getcmd(current,statusbar[i]);
@@ -88,8 +89,12 @@ void getsigcmds(int signal)
void setupsignals()
{
+ /* initialize all real time signals with dummy handler */
+ for(int i = SIGRTMIN; i <= SIGRTMAX; i++)
+ signal(i, dummysighandler);
+
for(int i = 0; i < LENGTH(blocks); i++)
- {
+ {
if (blocks[i].signal > 0)
signal(SIGRTMIN+blocks[i].signal, sighandler);
}
@@ -146,6 +151,14 @@ void statusloop()
}
}
+#ifndef __OpenBSD__
+/* this signal handler should do nothing */
+void dummysighandler(int signum)
+{
+ return;
+}
+#endif
+
#ifndef __OpenBSD__
void sighandler(int signum)
{
@@ -163,7 +176,7 @@ void termhandler(int signum)
int main(int argc, char** argv)
{
for(int i = 0; i < argc; i++)
- {
+ {
if (!strcmp("-d",argv[i]))
delim = argv[++i][0];
else if(!strcmp("-p",argv[i]))
--
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