Merge system-wide Vixie cron updates.

I don't believe that anyone should be running system-wide cron processes these
days (the attack surface is rather large), but should use separate per-user or
per-service mcron daemon processes.  But mcron is advertised as a drop-in
Vixie replacement, so we should do what we can to make it safe in this use
case.

I've performed a basic vetting of the changes against vandalism, but haven't
verified the correctness of the code or done any checking; the changes are
being accepted on the basis that almost anything is an improvement on what
currently exists.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/crontab-access.c.in b/src/crontab-access.c.in
new file mode 100644
index 0000000..652b9cc
--- /dev/null
+++ b/src/crontab-access.c.in
@@ -0,0 +1,10 @@
+#include <unistd.h>
+
+int main(int argc, char **argv)
+{
+  char *envp = NULL;
+  execve("%libexecdir%/crontab-access-real",
+         argv, &envp);
+  /* Should not get here! */
+  return 1;
+}