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eCryptfs: Use generic_file_splice_read()

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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 <mhalcrow@us.ibm.com>
Reviewed-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michael Halcrow 2007-10-16 01:28:04 -07:00 committed by Linus Torvalds
parent cd9d67dfd2
commit e9f6a99cb8
1 changed files with 2 additions and 17 deletions
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19
fs/ecryptfs/file.c
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@ -338,21 +338,6 @@ static int ecryptfs_fasync(int fd, struct file *file, int flag)
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_dir_fops = {
.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_main_fops = {
.release = ecryptfs_release,
.fsync = ecryptfs_fsync,
.fasync = ecryptfs_fasync,
.splice_read = ecryptfs_splice_read,
.splice_read = generic_file_splice_read,
};
static int