Adding upstream version 241.upstream/241upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 43 insertions, 0 deletions

diff --git a/src/basic/signal-util.h b/src/basic/signal-util.h
new file mode 100644
index 0000000..92f2804
--- /dev/null
+++ b/src/basic/signal-util.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include <signal.h>
+
+#include "macro.h"
+
+int reset_all_signal_handlers(void);
+int reset_signal_mask(void);
+
+int ignore_signals(int sig, ...);
+int default_signals(int sig, ...);
+int sigaction_many(const struct sigaction *sa, ...);
+
+int sigset_add_many(sigset_t *ss, ...);
+int sigprocmask_many(int how, sigset_t *old, ...);
+
+const char *signal_to_string(int i) _const_;
+int signal_from_string(const char *s) _pure_;
+
+void nop_signal_handler(int sig);
+
+static inline void block_signals_reset(sigset_t *ss) {
+        assert_se(sigprocmask(SIG_SETMASK, ss, NULL) >= 0);
+}
+
+#define BLOCK_SIGNALS(...)                                                         \
+        _cleanup_(block_signals_reset) _unused_ sigset_t _saved_sigset = ({        \
+                sigset_t _t;                                                       \
+                assert_se(sigprocmask_many(SIG_BLOCK, &_t, __VA_ARGS__, -1) >= 0); \
+                _t;                                                                \
+        })
+
+static inline bool SIGNAL_VALID(int signo) {
+        return signo > 0 && signo < _NSIG;
+}
+
+static inline const char* signal_to_string_with_check(int n) {
+        if (!SIGNAL_VALID(n))
+                return NULL;
+
+        return signal_to_string(n);
+}