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ovl: use generic_readlink 

All filesystems that are backers for overlayfs would also use
generic_readlink().  Move this logic to the overlay itself, which is a nice
cleanup.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Miklos Szeredi 2016-10-04 14:40:44 +02:00
parent cb348edb6b
commit 78a3fa4f32
1 changed files with 1 additions and 20 deletions
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21
fs/overlayfs/inode.c
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@ -176,25 +176,6 @@ static const char *ovl_get_link(struct dentry *dentry,
return p;
}
static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz)
{
struct path realpath;
struct inode *realinode;
const struct cred *old_cred;
int err;
ovl_path_real(dentry, &realpath);
realinode = realpath.dentry->d_inode;
if (!realinode->i_op->readlink)
return -EINVAL;
old_cred = ovl_override_creds(dentry->d_sb);
err = realinode->i_op->readlink(realpath.dentry, buf, bufsiz);
revert_creds(old_cred);
return err;
}
bool ovl_is_private_xattr(const char *name)
{
return strncmp(name, OVL_XATTR_PREFIX,
@ -381,7 +362,7 @@ static const struct inode_operations ovl_file_inode_operations = {
static const struct inode_operations ovl_symlink_inode_operations = {
.setattr = ovl_setattr,
.get_link = ovl_get_link,
.readlink = ovl_readlink,
.readlink = generic_readlink,
.getattr = ovl_getattr,
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,