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use sigaction(2) instead of signal(2)

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To prevent crashes
This commit is contained in:
Raphael Robatsch 2022-12-03 19:12:30 +01:00
parent e7214b60fa
commit 221daf2f5d
1 changed files with 7 additions and 4 deletions
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11
someblocks.c
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@ -95,15 +95,18 @@ void getsigcmds(unsigned int signal)
void setupsignals()
{
struct sigaction sa = {0};
#ifndef __OpenBSD__
/* initialize all real time signals with dummy handler */
for (int i = SIGRTMIN; i <= SIGRTMAX; i++)
signal(i, dummysighandler);
/* initialize all real time signals with dummy handler */
sa.sa_handler = dummysighandler;
for (int i = SIGRTMIN; i <= SIGRTMAX; i++)
sigaction(i, &sa, NULL);
#endif
sa.sa_handler = sighandler;
for (unsigned int i = 0; i < LENGTH(blocks); i++) {
if (blocks[i].signal > 0)
signal(SIGMINUS+blocks[i].signal, sighandler);
sigaction(SIGMINUS+blocks[i].signal, &sa, NULL);
}
}