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mask handled signals when running the signal handler

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Kovid Goyal 2022-07-10 12:52:21 +05:30
parent 8358377ec3
commit 4c2800b294
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GPG Key ID: 06BC317B515ACE7C
2 changed files with 4 additions and 5 deletions
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6
kitty/loop-utils.c
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@ -34,10 +34,10 @@ handle_signal(int sig_num UNUSED, siginfo_t *si, void *ucontext UNUSED) {
static bool
init_signal_handlers(LoopData *ld) {
ld->signal_read_fd = -1;
#ifdef HAS_SIGNAL_FD
sigemptyset(&ld->signals);
for (size_t i = 0; i < ld->num_handled_signals; i++) sigaddset(&ld->signals, ld->handled_signals[i]);
#ifdef HAS_SIGNAL_FD
if (ld->num_handled_signals) {
for (size_t i = 0; i < ld->num_handled_signals; i++) sigaddset(&ld->signals, ld->handled_signals[i]);
if (sigprocmask(SIG_BLOCK, &ld->signals, NULL) == -1) return false;
ld->signal_read_fd = signalfd(-1, &ld->signals, SFD_NONBLOCK | SFD_CLOEXEC);
if (ld->signal_read_fd == -1) return false;
@ -48,7 +48,7 @@ init_signal_handlers(LoopData *ld) {
if (!self_pipe(ld->signal_fds, true)) return false;
signal_write_fd = ld->signal_fds[1];
ld->signal_read_fd = ld->signal_fds[0];
struct sigaction act = {.sa_sigaction=handle_signal, .sa_flags=SA_SIGINFO | SA_RESTART};
struct sigaction act = {.sa_sigaction=handle_signal, .sa_flags=SA_SIGINFO | SA_RESTART, .sa_mask = ld->signals};
for (size_t i = 0; i < ld->num_handled_signals; i++) { if (sigaction(ld->handled_signals[i], &act, NULL) != 0) return false; }
}
#endif

3
kitty/loop-utils.h
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@ -34,9 +34,8 @@ typedef struct {
#endif
#ifndef HAS_SIGNAL_FD
int signal_fds[2];
#else
sigset_t signals;
#endif
sigset_t signals;
int wakeup_read_fd;
int signal_read_fd;
int handled_signals[16];