[PATCH] eCryptfs: Use fsstack's generic copy inode attr functions

Replace eCryptfs specific code & calls with the more generic fsstack
equivalents and remove the eCryptfs specific functions.

Signed-off-by: Josef "Jeff" Sipek <jsipek@cs.sunysb.edu>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

5 files changed, 27 insertions, 63 deletions

diff --git a/fs/ecryptfs/dentry.c b/fs/ecryptfs/dentry.c
index 52d1e36dc746..329efcd3d8c9 100644
--- a/fs/ecryptfs/dentry.c
+++ b/fs/ecryptfs/dentry.c
@@ -25,6 +25,7 @@
 #include <linux/dcache.h>
 #include <linux/namei.h>
 #include <linux/mount.h>
+#include <linux/fs_stack.h>
 #include "ecryptfs_kernel.h"
 
 /**
@@ -61,7 +62,7 @@ static int ecryptfs_d_revalidate(struct dentry *dentry, struct nameidata *nd)
                 struct inode *lower_inode =
                         ecryptfs_inode_to_lower(dentry->d_inode);
 
-                ecryptfs_copy_attr_all(dentry->d_inode, lower_inode);
+                fsstack_copy_attr_all(dentry->d_inode, lower_inode, NULL);
         }
 out:
         return rc;
diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index f992533d1692..424137fb5898 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -28,6 +28,7 @@
 
 #include <keys/user-type.h>
 #include <linux/fs.h>
+#include <linux/fs_stack.h>
 #include <linux/scatterlist.h>
 
 /* Version verification for shared data structures w/ userspace */
@@ -413,9 +414,6 @@ int ecryptfs_encode_filename(struct ecryptfs_crypt_stat *crypt_stat,
                              const char *name, int length,
                              char **encoded_name);
 struct dentry *ecryptfs_lower_dentry(struct dentry *this_dentry);
-void ecryptfs_copy_attr_atime(struct inode *dest, const struct inode *src);
-void ecryptfs_copy_attr_all(struct inode *dest, const struct inode *src);
-void ecryptfs_copy_inode_size(struct inode *dst, const struct inode *src);
 void ecryptfs_dump_hex(char *data, int bytes);
 int virt_to_scatterlist(const void *addr, int size, struct scatterlist *sg,
                         int sg_size);
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 42099e779a56..c48e4590b110 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -30,6 +30,7 @@
 #include <linux/security.h>
 #include <linux/smp_lock.h>
 #include <linux/compat.h>
+#include <linux/fs_stack.h>
 #include "ecryptfs_kernel.h"
 
 /**
@@ -192,7 +193,7 @@ retry:
                 goto retry;
         file->f_pos = lower_file->f_pos;
         if (rc >= 0)
-                ecryptfs_copy_attr_atime(inode, lower_file->f_dentry->d_inode);
+                fsstack_copy_attr_atime(inode, lower_file->f_dentry->d_inode);
         return rc;
 }
 
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 8a1945a84c36..c07a937b21ac 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -30,6 +30,7 @@
 #include <linux/namei.h>
 #include <linux/mount.h>
 #include <linux/crypto.h>
+#include <linux/fs_stack.h>
 #include "ecryptfs_kernel.h"
 
 static struct dentry *lock_parent(struct dentry *dentry)
@@ -53,48 +54,6 @@ static void unlock_dir(struct dentry *dir)
         dput(dir);
 }
 
-void ecryptfs_copy_inode_size(struct inode *dst, const struct inode *src)
-{
-        i_size_write(dst, i_size_read((struct inode *)src));
-        dst->i_blocks = src->i_blocks;
-}
-
-void ecryptfs_copy_attr_atime(struct inode *dest, const struct inode *src)
-{
-        dest->i_atime = src->i_atime;
-}
-
-static void ecryptfs_copy_attr_times(struct inode *dest,
-                                     const struct inode *src)
-{
-        dest->i_atime = src->i_atime;
-        dest->i_mtime = src->i_mtime;
-        dest->i_ctime = src->i_ctime;
-}
-
-static void ecryptfs_copy_attr_timesizes(struct inode *dest,
-                                         const struct inode *src)
-{
-        dest->i_atime = src->i_atime;
-        dest->i_mtime = src->i_mtime;
-        dest->i_ctime = src->i_ctime;
-        ecryptfs_copy_inode_size(dest, src);
-}
-
-void ecryptfs_copy_attr_all(struct inode *dest, const struct inode *src)
-{
-        dest->i_mode = src->i_mode;
-        dest->i_nlink = src->i_nlink;
-        dest->i_uid = src->i_uid;
-        dest->i_gid = src->i_gid;
-        dest->i_rdev = src->i_rdev;
-        dest->i_atime = src->i_atime;
-        dest->i_mtime = src->i_mtime;
-        dest->i_ctime = src->i_ctime;
-        dest->i_blkbits = src->i_blkbits;
-        dest->i_flags = src->i_flags;
-}
-
 /**
  * ecryptfs_create_underlying_file
  * @lower_dir_inode: inode of the parent in the lower fs of the new file
@@ -171,8 +130,8 @@ ecryptfs_do_create(struct inode *directory_inode,
                 ecryptfs_printk(KERN_ERR, "Failure in ecryptfs_interpose\n");
                 goto out_lock;
         }
-        ecryptfs_copy_attr_timesizes(directory_inode,
-                                     lower_dir_dentry->d_inode);
+        fsstack_copy_attr_times(directory_inode, lower_dir_dentry->d_inode);
+        fsstack_copy_inode_size(directory_inode, lower_dir_dentry->d_inode);
 out_lock:
         unlock_dir(lower_dir_dentry);
 out:
@@ -365,7 +324,7 @@ static struct dentry *ecryptfs_lookup(struct inode *dir, struct dentry *dentry,
                 "d_name.name = [%s]\n", lower_dentry,
                 lower_dentry->d_name.name);
         lower_inode = lower_dentry->d_inode;
-        ecryptfs_copy_attr_atime(dir, lower_dir_dentry->d_inode);
+        fsstack_copy_attr_atime(dir, lower_dir_dentry->d_inode);
         BUG_ON(!atomic_read(&lower_dentry->d_count));
         ecryptfs_set_dentry_private(dentry,
                                     kmem_cache_alloc(ecryptfs_dentry_info_cache,
@@ -462,7 +421,8 @@ static int ecryptfs_link(struct dentry *old_dentry, struct inode *dir,
         rc = ecryptfs_interpose(lower_new_dentry, new_dentry, dir->i_sb, 0);
         if (rc)
                 goto out_lock;
-        ecryptfs_copy_attr_timesizes(dir, lower_new_dentry->d_inode);
+        fsstack_copy_attr_times(dir, lower_new_dentry->d_inode);
+        fsstack_copy_inode_size(dir, lower_new_dentry->d_inode);
         old_dentry->d_inode->i_nlink =
                 ecryptfs_inode_to_lower(old_dentry->d_inode)->i_nlink;
         i_size_write(new_dentry->d_inode, file_size_save);
@@ -488,7 +448,7 @@ static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry)
                 printk(KERN_ERR "Error in vfs_unlink; rc = [%d]\n", rc);
                 goto out_unlock;
         }
-        ecryptfs_copy_attr_times(dir, lower_dir_inode);
+        fsstack_copy_attr_times(dir, lower_dir_inode);
         dentry->d_inode->i_nlink =
                 ecryptfs_inode_to_lower(dentry->d_inode)->i_nlink;
         dentry->d_inode->i_ctime = dir->i_ctime;
@@ -527,7 +487,8 @@ static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
         rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb, 0);
         if (rc)
                 goto out_lock;
-        ecryptfs_copy_attr_timesizes(dir, lower_dir_dentry->d_inode);
+        fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
+        fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
 out_lock:
         unlock_dir(lower_dir_dentry);
         dput(lower_dentry);
@@ -550,7 +511,8 @@ static int ecryptfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
         rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb, 0);
         if (rc)
                 goto out;
-        ecryptfs_copy_attr_timesizes(dir, lower_dir_dentry->d_inode);
+        fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
+        fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
         dir->i_nlink = lower_dir_dentry->d_inode->i_nlink;
 out:
         unlock_dir(lower_dir_dentry);
@@ -573,7 +535,7 @@ static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
         dput(lower_dentry);
         if (!rc)
                 d_delete(lower_dentry);
-        ecryptfs_copy_attr_times(dir, lower_dir_dentry->d_inode);
+        fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
         dir->i_nlink = lower_dir_dentry->d_inode->i_nlink;
         unlock_dir(lower_dir_dentry);
         if (!rc)
@@ -597,7 +559,8 @@ ecryptfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
         rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb, 0);
         if (rc)
                 goto out;
-        ecryptfs_copy_attr_timesizes(dir, lower_dir_dentry->d_inode);
+        fsstack_copy_attr_times(dir, lower_dir_dentry->d_inode);
+        fsstack_copy_inode_size(dir, lower_dir_dentry->d_inode);
 out:
         unlock_dir(lower_dir_dentry);
         if (!dentry->d_inode)
@@ -626,9 +589,9 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                         lower_new_dir_dentry->d_inode, lower_new_dentry);
         if (rc)
                 goto out_lock;
-        ecryptfs_copy_attr_all(new_dir, lower_new_dir_dentry->d_inode);
+        fsstack_copy_attr_all(new_dir, lower_new_dir_dentry->d_inode, NULL);
         if (new_dir != old_dir)
-                ecryptfs_copy_attr_all(old_dir, lower_old_dir_dentry->d_inode);
+                fsstack_copy_attr_all(old_dir, lower_old_dir_dentry->d_inode, NULL);
 out_lock:
         unlock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
         dput(lower_new_dentry->d_parent);
@@ -684,8 +647,8 @@ ecryptfs_readlink(struct dentry *dentry, char __user * buf, int bufsiz)
                                 rc = -EFAULT;
                 }
                 kfree(decoded_name);
-                ecryptfs_copy_attr_atime(dentry->d_inode,
-                                         lower_dentry->d_inode);
+                fsstack_copy_attr_atime(dentry->d_inode,
+                                        lower_dentry->d_inode);
         }
 out_free_lower_buf:
         kfree(lower_buf);
@@ -915,7 +878,7 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
         }
         rc = notify_change(lower_dentry, ia);
 out:
-        ecryptfs_copy_attr_all(inode, lower_inode);
+        fsstack_copy_attr_all(inode, lower_inode, NULL);
         return rc;
 }
 
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 3ede12b25933..d0541ae8faba 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -35,6 +35,7 @@
 #include <linux/pagemap.h>
 #include <linux/key.h>
 #include <linux/parser.h>
+#include <linux/fs_stack.h>
 #include "ecryptfs_kernel.h"
 
 /**
@@ -112,10 +113,10 @@ int ecryptfs_interpose(struct dentry *lower_dentry, struct dentry *dentry,
                 d_add(dentry, inode);
         else
                 d_instantiate(dentry, inode);
-        ecryptfs_copy_attr_all(inode, lower_inode);
+        fsstack_copy_attr_all(inode, lower_inode, NULL);
         /* This size will be overwritten for real files w/ headers and
          * other metadata */
-        ecryptfs_copy_inode_size(inode, lower_inode);
+        fsstack_copy_inode_size(inode, lower_inode);
 out:
         return rc;
 }