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-rw-r--r--crypto/ics/cryptfs.c22
-rw-r--r--crypto/ics/cryptfs.h1
2 files changed, 23 insertions, 0 deletions
diff --git a/crypto/ics/cryptfs.c b/crypto/ics/cryptfs.c
index 193339ec9..4f3d5d01a 100644
--- a/crypto/ics/cryptfs.c
+++ b/crypto/ics/cryptfs.c
@@ -653,6 +653,28 @@ int cryptfs_crypto_complete(void)
return -1;
}
+int cryptfs_check_footer(void)
+{
+ int rc = -1;
+ char fs_type[PROPERTY_VALUE_MAX];
+ char real_blkdev[MAXPATHLEN];
+ char fs_options[PROPERTY_VALUE_MAX];
+ unsigned long mnt_flags;
+ struct crypt_mnt_ftr crypt_ftr;
+ /* Allocate enough space for a 256 bit key, but we may use less */
+ unsigned char encrypted_master_key[256];
+ unsigned char salt[SALT_LEN];
+
+ if (get_orig_mount_parms(DATA_MNT_POINT, fs_type, real_blkdev, &mnt_flags, fs_options)) {
+ printf("Error reading original mount parms for mount point %s\n", DATA_MNT_POINT);
+ return rc;
+ }
+
+ rc = get_crypt_ftr_and_key(real_blkdev, &crypt_ftr, encrypted_master_key, salt);
+
+ return rc;
+}
+
int cryptfs_check_passwd(const char *passwd)
{
char pwbuf[256];
diff --git a/crypto/ics/cryptfs.h b/crypto/ics/cryptfs.h
index eee43b3bc..8c8037659 100644
--- a/crypto/ics/cryptfs.h
+++ b/crypto/ics/cryptfs.h
@@ -76,6 +76,7 @@ struct crypt_mnt_ftr {
#ifdef __cplusplus
extern "C" {
#endif
+ int cryptfs_check_footer(void);
int cryptfs_check_passwd(const char *pw);
#ifdef __cplusplus
}