From: =?UTF-8?q?Carlo=20Marcelo=20Arenas=20Bel=C3=B3n?= <carenas@xxxxxxxxx>
A future change will start using sigaction to setup a SIGCHLD signal
handler.
The current code uses signal(), which returns SIG_ERR (but doesn't
seem to set errno) so instruct sigaction() to do the same.
A new SA flag will be needed, so copy the one from Cygwinr; note that
the sigacgtion() implementation that is provided won't use it, so
its value is otherwise irrelevant.
Signed-off-by: Carlo Marcelo Arenas Belón <carenas@xxxxxxxxx>
---
compat/mingw-posix.h | 1 +
compat/mingw.c | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/compat/mingw-posix.h b/compat/mingw-posix.h
index 88e0cf92924b..631a20868489 100644
--- a/compat/mingw-posix.h
+++ b/compat/mingw-posix.h
@@ -96,6 +96,7 @@ struct sigaction {
unsigned sa_flags;
};
#define SA_RESTART 0
+#define SA_NOCLDSTOP 1
struct itimerval {
struct timeval it_value, it_interval;
diff --git a/compat/mingw.c b/compat/mingw.c
index 8a9972a1ca19..5d69ae32f4b9 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -2561,7 +2561,9 @@ int setitimer(int type UNUSED, struct itimerval *in, struct itimerval *out)
int sigaction(int sig, struct sigaction *in, struct sigaction *out)
{
- if (sig != SIGALRM)
+ if (sig == SIGCHLD)
+ return -1;
+ else if (sig != SIGALRM)
return errno = EINVAL,
error("sigaction only implemented for SIGALRM");
if (out)
--
gitgitgadget
