compat/mingw: allow sigaction(SIGCHLD)
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 Cygwin; note that the sigaction() implementation that is provided won't use it, so its value is otherwise irrelevant. Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Carlo Marcelo Arenas Belón committed
Jul 10, 2025 at 19:45 UTC
ef03aa432ab7fffa81a866ec21e08ecd8a876a26
2 files changed
+4
-1
compat/mingw-posix.h
+1
@@ -96,6 +96,7 @@ struct sigaction {
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unsigned sa_flags;
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};
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#define SA_RESTART 0
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+#define SA_NOCLDSTOP 1
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struct itimerval {
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struct timeval it_value, it_interval;
compat/mingw.c
+3
-1
@@ -2561,7 +2561,9 @@ int setitimer(int type UNUSED, struct itimerval *in, struct itimerval *out)
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int sigaction(int sig, struct sigaction *in, struct sigaction *out)
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{
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- if (sig != SIGALRM)
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+ if (sig == SIGCHLD)
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+ return -1;
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+ else if (sig != SIGALRM)
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return errno = EINVAL,
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error("sigaction only implemented for SIGALRM");
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if (out)