From: Carlo Marcelo Arenas Belón Date: Thu, 10 Jul 2025 19:45:42 +0000 (+0000) Subject: compat/mingw: allow sigaction(SIGCHLD) X-Git-Tag: v2.51.0-rc0~50^2~1 X-Git-Url: http://git.ipfire.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=ef03aa432ab7fffa81a866ec21e08ecd8a876a26;p=thirdparty%2Fgit.git 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 Signed-off-by: Junio C Hamano --- diff --git a/compat/mingw-posix.h b/compat/mingw-posix.h index 88e0cf9292..631a208684 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 8a9972a1ca..5d69ae32f4 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)