[Suspend2][ 28/35] [Suspend2] Test filewriter target value helper.

[Nigel Cunningham <nigel@suspend2.net>]

The helper called either when the user echoes a new value into
filewriter_target, or when resume2= is checked on boot or when it is reset.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 kernel/power/suspend_file.c |   30 ++++++++++++++++++++++++++++++
 1 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/kernel/power/suspend_file.c b/kernel/power/suspend_file.c
index 2e19aae..9947323 100644
--- a/kernel/power/suspend_file.c
+++ b/kernel/power/suspend_file.c
@@ -828,3 +828,33 @@ static void filewriter_set_resume2(void)
 	suspend_attempt_to_parse_resume_device();
 }
 
+static int __test_filewriter_target(char *target, int resume_time)
+{
+	filewriter_get_target_info(target, 0, resume_time);
+	if (filewriter_signature_op(GET_IMAGE_EXISTS) > -1) {
+		printk(name_suspend "Filewriter: File signature found.\n");
+		if (!resume_time)
+			filewriter_set_resume2();
+		
+		suspend_bio_ops.set_devinfo(&devinfo);
+		suspend_writer_posn.chains = &block_chain;
+		suspend_writer_posn.num_chains = 1;
+
+		set_suspend_state(SUSPEND_CAN_SUSPEND);
+		return 0;
+	}
+
+	clear_suspend_state(SUSPEND_CAN_SUSPEND);
+
+	if (*target)
+		printk(name_suspend
+			"Filewriter: Sorry. No signature found at %s.\n",
+			target);
+	else
+		if (!resume_time)
+			printk(name_suspend
+				"Filewriter: Sorry. Target is not set for suspending.\n");
+
+	return 1;
+}
+

--
Nigel Cunningham		nigel at suspend2 dot net