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ovl: do not pass overlay dentry to ovl_get_inode() 

This is needed for using ovl_get_inode() for decoding file handles
for NFS export.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Amir Goldstein 2017-12-12 23:43:16 +02:00 committed by Miklos Szeredi
parent 91ffe7beb3
commit 0aceb53e73
3 changed files with 12 additions and 12 deletions
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16
fs/overlayfs/inode.c
View File

@ -643,14 +643,14 @@ static bool ovl_verify_inode(struct inode *inode, struct dentry *lowerdentry,
return true; return true;
} }
struct inode *ovl_get_inode(struct dentry *dentry, struct dentry *upperdentry, struct inode *ovl_get_inode(struct super_block *sb, struct dentry *upperdentry,
struct dentry *index) struct dentry *lowerdentry, struct dentry *index,
unsigned int numlower)
{ {
struct dentry *lowerdentry = ovl_dentry_lower(dentry);
struct inode *realinode = upperdentry ? d_inode(upperdentry) : NULL; struct inode *realinode = upperdentry ? d_inode(upperdentry) : NULL;
struct inode *inode; struct inode *inode;
/* Already indexed or could be indexed on copy up? */ /* Already indexed or could be indexed on copy up? */
bool indexed = (index || (ovl_indexdir(dentry->d_sb) && !upperdentry)); bool indexed = (index || (ovl_indexdir(sb) && !upperdentry));
struct dentry *origin = indexed ? lowerdentry : NULL; struct dentry *origin = indexed ? lowerdentry : NULL;
bool is_dir; bool is_dir;
@ -675,7 +675,7 @@ struct inode *ovl_get_inode(struct dentry *dentry, struct dentry *upperdentry,
struct inode *key = d_inode(origin ?: upperdentry); struct inode *key = d_inode(origin ?: upperdentry);
unsigned int nlink = is_dir ? 1 : realinode->i_nlink; unsigned int nlink = is_dir ? 1 : realinode->i_nlink;
inode = iget5_locked(dentry->d_sb, (unsigned long) key, inode = iget5_locked(sb, (unsigned long) key,
ovl_inode_test, ovl_inode_set, key); ovl_inode_test, ovl_inode_set, key);
if (!inode) if (!inode)
goto out_nomem; goto out_nomem;
@ -699,7 +699,7 @@ struct inode *ovl_get_inode(struct dentry *dentry, struct dentry *upperdentry,
nlink = ovl_get_nlink(lowerdentry, upperdentry, nlink); nlink = ovl_get_nlink(lowerdentry, upperdentry, nlink);
set_nlink(inode, nlink); set_nlink(inode, nlink);
} else { } else {
inode = new_inode(dentry->d_sb); inode = new_inode(sb);
if (!inode) if (!inode)
goto out_nomem; goto out_nomem;
} }
@ -711,9 +711,7 @@ struct inode *ovl_get_inode(struct dentry *dentry, struct dentry *upperdentry,
/* Check for non-merge dir that may have whiteouts */ /* Check for non-merge dir that may have whiteouts */
if (is_dir) { if (is_dir) {
struct ovl_entry *oe = dentry->d_fsdata; if (((upperdentry && lowerdentry) || numlower > 1) ||
if (((upperdentry && lowerdentry) || oe->numlower > 1) ||
ovl_check_origin_xattr(upperdentry ?: lowerdentry)) { ovl_check_origin_xattr(upperdentry ?: lowerdentry)) {
ovl_set_flag(OVL_WHITEOUTS, inode); ovl_set_flag(OVL_WHITEOUTS, inode);
} }

3
fs/overlayfs/namei.c
View File

@ -967,7 +967,8 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
upperdentry = dget(index); upperdentry = dget(index);
if (upperdentry || ctr) { if (upperdentry || ctr) {
inode = ovl_get_inode(dentry, upperdentry, index); inode = ovl_get_inode(dentry->d_sb, upperdentry, origin, index,
ctr);
err = PTR_ERR(inode); err = PTR_ERR(inode);
if (IS_ERR(inode)) if (IS_ERR(inode))
goto out_free_oe; goto out_free_oe;

5
fs/overlayfs/overlayfs.h
View File

@ -307,8 +307,9 @@ int ovl_update_time(struct inode *inode, struct timespec *ts, int flags);
bool ovl_is_private_xattr(const char *name); bool ovl_is_private_xattr(const char *name);
struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, dev_t rdev); struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, dev_t rdev);
struct inode *ovl_get_inode(struct dentry *dentry, struct dentry *upperdentry, struct inode *ovl_get_inode(struct super_block *sb, struct dentry *upperdentry,
struct dentry *index); struct dentry *lowerdentry, struct dentry *index,
unsigned int numlower);
static inline void ovl_copyattr(struct inode *from, struct inode *to) static inline void ovl_copyattr(struct inode *from, struct inode *to)
{ {
to->i_uid = from->i_uid; to->i_uid = from->i_uid;