eCryptfs is currently just passing through splice reads to the lower
filesystem. This is obviously incorrect behavior; the decrypted data
is what needs to be read, not the lower encrypted data. I cannot think
of any good reason for eCryptfs to implement splice_read, so this
patch points the eCryptfs fops splice_read to use
generic_file_splice_read.
Signed-off-by: Michael Halcrow <[email protected]>
--- linux-2.6.23-rc4-mm1.orig/fs/ecryptfs/file.c
+++ linux-2.6.23-rc4-mm1/fs/ecryptfs/file.c
@@ -338,21 +338,6 @@ static int ecryptfs_fasync(int fd, struc
return rc;
}
-static ssize_t ecryptfs_splice_read(struct file *file, loff_t * ppos,
- struct pipe_inode_info *pipe, size_t count,
- unsigned int flags)
-{
- struct file *lower_file = NULL;
- int rc = -EINVAL;
-
- lower_file = ecryptfs_file_to_lower(file);
- if (lower_file->f_op && lower_file->f_op->splice_read)
- rc = lower_file->f_op->splice_read(lower_file, ppos, pipe,
- count, flags);
-
- return rc;
-}
-
static int ecryptfs_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg);
@@ -365,7 +350,7 @@ const struct file_operations ecryptfs_di
.release = ecryptfs_release,
.fsync = ecryptfs_fsync,
.fasync = ecryptfs_fasync,
- .splice_read = ecryptfs_splice_read,
+ .splice_read = generic_file_splice_read,
};
const struct file_operations ecryptfs_main_fops = {
@@ -382,7 +367,7 @@ const struct file_operations ecryptfs_ma
.release = ecryptfs_release,
.fsync = ecryptfs_fsync,
.fasync = ecryptfs_fasync,
- .splice_read = ecryptfs_splice_read,
+ .splice_read = generic_file_splice_read,
};
static int
-
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