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systemd/src/basic/signal-util.h
T
Daan De Meyer 03e17cbe6e basic: Move assertion specific functions to assert-util.h
Various functions in log.h are only used by asserts, and there's
enough assertion related stuff in macro.h to justify a separate header
which also makes it easier to avoid circular dependencies.

Let's introduce assert-util.h and an accompanying fundamental header
and move all the assertion related stuff over there. PROJECT_FILE is
moved over to macro.h.
2025-04-18 13:59:06 +02:00

75 lines
2.6 KiB
C

/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <signal.h>
#include "assert-util.h"
#include "macro.h"
int reset_all_signal_handlers(void);
int reset_signal_mask(void);
int sigaction_many_internal(const struct sigaction *sa, ...);
#define ignore_signals(...) \
sigaction_many_internal( \
&sigaction_ignore, \
__VA_ARGS__, \
-1)
#define default_signals(...) \
sigaction_many_internal( \
&sigaction_default, \
__VA_ARGS__, \
-1)
#define sigaction_many(sa, ...) \
sigaction_many_internal(sa, __VA_ARGS__, -1)
int sigset_add_many_internal(sigset_t *ss, ...);
#define sigset_add_many(...) sigset_add_many_internal(__VA_ARGS__, -1)
int sigprocmask_many_internal(int how, sigset_t *ret_old_mask, ...);
#define sigprocmask_many(...) sigprocmask_many_internal(__VA_ARGS__, -1)
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__) >= 0); \
_t; \
})
#define SIGNO_INVALID (-EINVAL)
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);
}
int signal_is_blocked(int sig);
int pop_pending_signal_internal(int sig, ...);
#define pop_pending_signal(...) pop_pending_signal_internal(__VA_ARGS__, -1)
void propagate_signal(int sig, siginfo_t *siginfo);
extern const struct sigaction sigaction_ignore;
extern const struct sigaction sigaction_default;
extern const struct sigaction sigaction_nop_nocldstop;
int parse_signo(const char *s, int *ret);