tree-wide: drop 'This file is part of systemd' blurb

[elogind.git] / src / basic / signal-util.h

diff --git a/src/basic/signal-util.h b/src/basic/signal-util.h
index 7013c51a3d9aaa4385ec3321bd405b6a107f5e25..5b7b127d9ed9c74e5dbf8aba79e82ef97a61d3de 100644 (file)
--- a/src/basic/signal-util.h
+++ b/src/basic/signal-util.h
@@ -1,22 +1,8 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
 #pragma once
 
 /***
-  This file is part of systemd.
-
   Copyright 2010-2015 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
 #include <signal.h>
@@ -27,8 +13,8 @@ int reset_all_signal_handlers(void);
 int reset_signal_mask(void);
 
 int ignore_signals(int sig, ...);
-#if 0 /// UNNEEDED by elogind
 int default_signals(int sig, ...);
+#if 0 /// UNNEEDED by elogind
 int sigaction_many(const struct sigaction *sa, ...);
 #endif // 0
 
@@ -38,9 +24,7 @@ int sigprocmask_many(int how, sigset_t *old, ...);
 const char *signal_to_string(int i) _const_;
 int signal_from_string(const char *s) _pure_;
 
-int signal_from_string_try_harder(const char *s);
 #if 0 /// UNNEEDED by elogind
-
 void nop_signal_handler(int sig);
 #endif // 0
 
@@ -48,9 +32,20 @@ static inline void block_signals_reset(sigset_t *ss) {
         assert_se(sigprocmask(SIG_SETMASK, ss, NULL) >= 0);
 }
 
-#define BLOCK_SIGNALS(...)                                              \
-        _cleanup_(block_signals_reset) sigset_t _saved_sigset = ({      \
-                sigset_t t;                                             \
-                assert_se(sigprocmask_many(SIG_BLOCK, &t, __VA_ARGS__, -1) >= 0); \
-                t;                                                      \
+#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);
+}