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util.signal: Fail signalfd() if unable to change signal mask

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By aborting early, the failure should be brought to the attention
somehow.
This commit is contained in:
Kim Alvefur 2024-02-28 22:31:06 +01:00
parent f1e07782ed
commit 36a9583069
1 changed files with 4 additions and 1 deletions
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5
util-src/signal.c
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@ -384,7 +384,10 @@ static int l_signalfd(lua_State *L) {
sigemptyset(&sfd->mask);
sigaddset(&sfd->mask, luaL_checkinteger(L, 1));
sigprocmask(SIG_BLOCK, &sfd->mask, NULL); /* TODO check err */
if (sigprocmask(SIG_BLOCK, &sfd->mask, NULL) != 0) {
lua_pushnil(L);
return 1;
};
sfd->fd = signalfd(-1, &sfd->mask, SFD_NONBLOCK);