Introduce two more configure options

fastboot: once enabled, fsck would be skipped on filesystems listed in
          /etc/fstab.
fsckfix: once enabled, 'fsck -ys' would be run instead of 'fsck -a',
         and check the return value larger than 1 as a failure and goes
         to login console.

They are both disabled by default, no functional changes unless an end
user choose to enable them.

The idea derives from Sysvinit's "FASTBOOT" and "FSCKFIX".

Signed-off-by: Ming Liu <liu.ming50@gmail.com>

configure.ac

@@ -57,6 +57,14 @@ AC_ARG_ENABLE(kernel_cmdline,
         AS_HELP_STRING([--enable-kernel-cmdline], [Parse init args from /proc/cmdline (don't use!)]),,[
 	enable_kernel_cmdline=no])
 
+AC_ARG_ENABLE(fastboot,
+        AS_HELP_STRING([--enable-fastboot], [Skip fsck check on filesystems listed in /etc/fstab]),,[
+	enable_fastboot=no])
+
+AC_ARG_ENABLE(fsckfix,
+        AS_HELP_STRING([--enable-fsckfix], [Run fsck fix mode (options: -yf) on filesystems listed in /etc/fstab]),,[
+	enable_fsckfix=no])
+
 AC_ARG_ENABLE(redirect,
         AS_HELP_STRING([--disable-redirect], [Disable redirection of service output to /dev/null]),,[
 	enable_redirect=yes])
@@ -134,6 +142,12 @@ AS_IF([test "x$enable_auto_reload" = "xyes"], [
 AS_IF([test "x$enable_kernel_cmdline" = "xyes"], [
         AC_DEFINE(KERNEL_CMDLINE, 1, [Dumpster diving after init args from /proc/cmdline])])
 
+AS_IF([test "x$enable_fastboot" = "xyes"], [
+	AC_DEFINE(FAST_BOOT, 1, [Skip fsck check on filesystems listed in /etc/fstab])])
+
+AS_IF([test "x$enable_fsckfix" = "xyes"], [
+	AC_DEFINE(FSCK_FIX, 1, [Run fsck fix mode (options: -yf) on filesystems listed in /etc/fstab])])
+
 AS_IF([test "x$enable_redirect" = "xyes"], [
 	AC_DEFINE(REDIRECT_OUTPUT, 1, [Enable redirection of service output to /dev/null])])