[LTP] [PATCH v4 2/3] Add a library wrapper for sigaction()
Michael Moese
mmoese@suse.de
Mon Feb 12 11:03:40 CET 2018
In a multithreaded program, using signal() results in unspecified
behavior. In this case, sigaction() has to be used to install a
signal handler.
Therefore, SAFE_SIGACTION() is added.
Signed-off-by: Michael Moese <mmoese@suse.de>
---
include/tst_safe_macros.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/include/tst_safe_macros.h b/include/tst_safe_macros.h
index 06bff13c7..bf12e0719 100644
--- a/include/tst_safe_macros.h
+++ b/include/tst_safe_macros.h
@@ -397,6 +397,26 @@ static inline sighandler_t safe_signal(const char *file, const int lineno,
#define SAFE_SIGNAL(signum, handler) \
safe_signal(__FILE__, __LINE__, (signum), (handler))
+
+
+static inline int safe_sigaction(const char *file, const int lineno,
+ int signum, const struct sigaction *act,
+ struct sigaction *oldact)
+{
+ int rval;
+
+ rval = sigaction(signum, act, oldact);
+
+ if (rval == -1) {
+ tst_brk_(file, lineno, TBROK | TERRNO,
+ "sigaction(%d, %p, %p) failed", signum, act, oldact);
+ }
+
+ return rval;
+}
+#define SAFE_SIGACTION(signum, act, oldact) \
+ safe_sigaction(__FILE__, __LINE__, (signum), (act), (oldact))
+
#define SAFE_EXECLP(file, arg, ...) do { \
execlp((file), (arg), ##__VA_ARGS__); \
tst_brk_(__FILE__, __LINE__, TBROK | TERRNO, \
--
2.13.6
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