Make persistent field in cryptofs support longer values.
Store long field values in multiple underlying fixed-length entries
and concatenate them together when reading back.
Bug: 17556485
Change-Id: I2f8033d18c208993fa1b010712be0dad5d8b646b
diff --git a/cryptfs.h b/cryptfs.h
index 66e0b4c..d873c26 100644
--- a/cryptfs.h
+++ b/cryptfs.h
@@ -201,6 +201,23 @@
#define ENABLE_INPLACE_ERR_OTHER -1
#define ENABLE_INPLACE_ERR_DEV -2 /* crypto_blkdev issue */
+/* Return values for cryptfs_getfield */
+#define CRYPTO_GETFIELD_OK 0
+#define CRYPTO_GETFIELD_ERROR_NO_FIELD -1
+#define CRYPTO_GETFIELD_ERROR_OTHER -2
+#define CRYPTO_GETFIELD_ERROR_BUF_TOO_SMALL -3
+
+/* Return values for cryptfs_setfield */
+#define CRYPTO_SETFIELD_OK 0
+#define CRYPTO_SETFIELD_ERROR_OTHER -1
+#define CRYPTO_SETFIELD_ERROR_FIELD_TOO_LONG -2
+#define CRYPTO_SETFIELD_ERROR_VALUE_TOO_LONG -3
+
+/* Return values for persist_del_key */
+#define PERSIST_DEL_KEY_OK 0
+#define PERSIST_DEL_KEY_ERROR_OTHER -1
+#define PERSIST_DEL_KEY_ERROR_NO_FIELD -2
+
#ifdef __cplusplus
extern "C" {
#endif
@@ -219,8 +236,8 @@
char *crypto_dev_path, unsigned int max_pathlen,
int *new_major, int *new_minor);
int cryptfs_revert_volume(const char *label);
- int cryptfs_getfield(char *fieldname, char *value, int len);
- int cryptfs_setfield(char *fieldname, char *value);
+ int cryptfs_getfield(const char *fieldname, char *value, int len);
+ int cryptfs_setfield(const char *fieldname, const char *value);
int cryptfs_mount_default_encrypted(void);
int cryptfs_get_password_type(void);
char* cryptfs_get_password(void);