daemon: move daemonize() to libgit.a

diff --git a/setup.c b/setup.c
index 6c3f85ff7a7935ed6f05ab5ab376a2d6c5ca2d46..713043ad508dd0083e359547ed477fc9ee5e8406 100644 (file)
--- a/setup.c
+++ b/setup.c
@@ -787,3 +787,27 @@ void sanitize_stdfds(void)
        if (fd > 2)
                close(fd);
 }
+
+int daemonize(void)
+{
+#ifdef NO_POSIX_GOODIES
+       errno = ENOSYS;
+       return -1;
+#else
+       switch (fork()) {
+               case 0:
+                       break;
+               case -1:
+                       die_errno("fork failed");
+               default:
+                       exit(0);
+       }
+       if (setsid() == -1)
+               die_errno("setsid failed");
+       close(0);
+       close(1);
+       close(2);
+       sanitize_stdfds();
+       return 0;
+#endif
+}