-#include "git-compat-util.h"
+#include "cache.h"
#include "exec_cmd.h"
+/*
+ * Many parts of Git have subprograms communicate via pipe, expect the
+ * upstream of a pipe to die with SIGPIPE when the downstream of a
+ * pipe does not need to read all that is written. Some third-party
+ * programs that ignore or block SIGPIPE for their own reason forget
+ * to restore SIGPIPE handling to the default before spawning Git and
+ * break this carefully orchestrated machinery.
+ *
+ * Restore the way SIGPIPE is handled to default, which is what we
+ * expect.
+ */
+static void restore_sigpipe_to_default(void)
+{
+ sigset_t unblock;
+
+ sigemptyset(&unblock);
+ sigaddset(&unblock, SIGPIPE);
+ sigprocmask(SIG_UNBLOCK, &unblock, NULL);
+ signal(SIGPIPE, SIG_DFL);
+}
+
int main(int argc, char **av)
{
/*
*/
const char **argv = (const char **)av;
+ /*
+ * Always open file descriptors 0/1/2 to avoid clobbering files
+ * in die(). It also avoids messing up when the pipes are dup'ed
+ * onto stdin/stdout/stderr in the child processes we spawn.
+ */
+ sanitize_stdfds();
+
argv[0] = git_extract_argv0_path(argv[0]);
+ restore_sigpipe_to_default();
+
return cmd_main(argc, argv);
}