[Suspend2][ 08/12] [Suspend2] Encryption resources needed.

[Nigel Cunningham <nigel@suspend2.net>]

Add routines to return the amount of memory and header storage needed for
the encryption module.

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

 kernel/power/encryption.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/kernel/power/encryption.c b/kernel/power/encryption.c
index 25db7ba..d12eb47 100644
--- a/kernel/power/encryption.c
+++ b/kernel/power/encryption.c
@@ -297,3 +297,23 @@ static int suspend_encrypt_print_debug_s
 	return len;
 }
 
+/* encryption_memory_needed
+ *
+ * Description:	Tell the caller how much memory we need to operate during
+ * 		suspend/resume.
+ * Returns:	Unsigned long. Maximum number of bytes of memory required for
+ * 		operation.
+ */
+static unsigned long suspend_encrypt_memory_needed(void)
+{
+	return PAGE_SIZE;
+}
+
+static unsigned long suspend_encrypt_storage_needed(void)
+{
+	return 4 + strlen(suspend_encryptor_name) +
+		(suspend_encryptor_save_key_and_iv ?
+		 (4 + strlen(suspend_encryptor_key) +
+		  strlen(suspend_encryptor_iv)) : 0);
+}
+

--
Nigel Cunningham		nigel at suspend2 dot net
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