-#include "git-compat-util.h"
+#include "cache.h"
+#include "exec-cmd.h"
+#include "attr.h"
-int main(int argc, char **av)
+/*
+ * 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, const char **argv)
+{
+ int result;
+
/*
- * This const trickery is explained in
- * 84d32bf7678259c08406571cd6ce4b7a6724dcba
+ * 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.
*/
- const char **argv = (const char **)av;
+ sanitize_stdfds();
+ restore_sigpipe_to_default();
+
+ trace2_initialize();
+ trace2_cmd_start(argv);
+ trace2_collect_process_info();
+
+ git_resolve_executable_dir(argv[0]);
+
+ git_setup_gettext();
+
+ initialize_the_repository();
+
+ attr_start();
+
+ result = cmd_main(argc, argv);
+
+ trace2_cmd_exit(result);
- return cmd_main(argc, argv);
+ return result;
}