Merge branch 'devel-stable' into devel

[safe/jmp/linux-2.6] / fs / ecryptfs / ecryptfs_kernel.h

diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index c11fc95..bfc2e0f 100644 (file)
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -35,6 +35,7 @@
 #include <linux/scatterlist.h>
 #include <linux/hash.h>
 #include <linux/nsproxy.h>
+#include <linux/backing-dev.h>
 
 /* Version verification for shared data structures w/ userspace */
 #define ECRYPTFS_VERSION_MAJOR 0x00
@@ -269,10 +270,11 @@ struct ecryptfs_crypt_stat {
 #define ECRYPTFS_ENCRYPT_FILENAMES    0x00000800
 #define ECRYPTFS_ENCFN_USE_MOUNT_FNEK 0x00001000
 #define ECRYPTFS_ENCFN_USE_FEK        0x00002000
+#define ECRYPTFS_UNLINK_SIGS         0x00004000
        u32 flags;
        unsigned int file_version;
        size_t iv_bytes;
-       size_t num_header_bytes_at_front;
+       size_t metadata_size;
        size_t extent_size; /* Data extent size; default is 4096 */
        size_t key_size;
        size_t extent_shift;
@@ -328,6 +330,7 @@ struct ecryptfs_dentry_info {
  */
 struct ecryptfs_global_auth_tok {
 #define ECRYPTFS_AUTH_TOK_INVALID 0x00000001
+#define ECRYPTFS_AUTH_TOK_FNEK    0x00000002
        u32 flags;
        struct list_head mount_crypt_stat_list;
        struct key *global_auth_tok_key;
@@ -391,6 +394,7 @@ struct ecryptfs_mount_crypt_stat {
 struct ecryptfs_sb_info {
        struct super_block *wsi_sb;
        struct ecryptfs_mount_crypt_stat mount_crypt_stat;
+       struct backing_dev_info bdi;
 };
 
 /* file private data. */
@@ -462,6 +466,14 @@ struct ecryptfs_daemon {
 
 extern struct mutex ecryptfs_daemon_hash_mux;
 
+static inline size_t
+ecryptfs_lower_header_size(struct ecryptfs_crypt_stat *crypt_stat)
+{
+       if (crypt_stat->flags & ECRYPTFS_METADATA_IN_XATTR)
+               return 0;
+       return crypt_stat->metadata_size;
+}
+
 static inline struct ecryptfs_file_info *
 ecryptfs_file_to_private(struct file *file)
 {
@@ -579,8 +591,8 @@ extern const struct inode_operations ecryptfs_main_iops;
 extern const struct inode_operations ecryptfs_dir_iops;
 extern const struct inode_operations ecryptfs_symlink_iops;
 extern const struct super_operations ecryptfs_sops;
-extern struct dentry_operations ecryptfs_dops;
-extern struct address_space_operations ecryptfs_aops;
+extern const struct dentry_operations ecryptfs_dops;
+extern const struct address_space_operations ecryptfs_aops;
 extern int ecryptfs_verbosity;
 extern unsigned int ecryptfs_message_buf_len;
 extern signed long ecryptfs_message_wait_timeout;
@@ -619,7 +631,6 @@ int ecryptfs_interpose(struct dentry *hidden_dentry,
                       u32 flags);
 int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry,
                                        struct dentry *lower_dentry,
-                                       struct ecryptfs_crypt_stat *crypt_stat,
                                        struct inode *ecryptfs_dir_inode,
                                        struct nameidata *ecryptfs_nd);
 int ecryptfs_decode_and_decrypt_filename(char **decrypted_name,
@@ -650,6 +661,9 @@ int ecryptfs_decrypt_page(struct page *page);
 int ecryptfs_write_metadata(struct dentry *ecryptfs_dentry);
 int ecryptfs_read_metadata(struct dentry *ecryptfs_dentry);
 int ecryptfs_new_file_context(struct dentry *ecryptfs_dentry);
+void ecryptfs_write_crypt_stat_flags(char *page_virt,
+                                    struct ecryptfs_crypt_stat *crypt_stat,
+                                    size_t *written);
 int ecryptfs_read_and_validate_header_region(char *data,
                                             struct inode *ecryptfs_inode);
 int ecryptfs_read_and_validate_xattr_region(char *page_virt,
@@ -696,7 +710,7 @@ ecryptfs_write_header_metadata(char *virt,
 int ecryptfs_add_keysig(struct ecryptfs_crypt_stat *crypt_stat, char *sig);
 int
 ecryptfs_add_global_auth_tok(struct ecryptfs_mount_crypt_stat *mount_crypt_stat,
-                          char *sig);
+                          char *sig, u32 global_auth_tok_flags);
 int ecryptfs_get_global_auth_tok_for_sig(
        struct ecryptfs_global_auth_tok **global_auth_tok,
        struct ecryptfs_mount_crypt_stat *mount_crypt_stat, char *sig);