Commit b9680917 authored by Al Viro's avatar Al Viro

security_d_instantiate(): move to the point prior to attaching dentry to inode

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 84695ffe
......@@ -1775,11 +1775,11 @@ void d_instantiate(struct dentry *entry, struct inode * inode)
{
BUG_ON(!hlist_unhashed(&entry->d_u.d_alias));
if (inode) {
security_d_instantiate(entry, inode);
spin_lock(&inode->i_lock);
__d_instantiate(entry, inode);
spin_unlock(&inode->i_lock);
}
security_d_instantiate(entry, inode);
}
EXPORT_SYMBOL(d_instantiate);
......@@ -1796,6 +1796,7 @@ int d_instantiate_no_diralias(struct dentry *entry, struct inode *inode)
{
BUG_ON(!hlist_unhashed(&entry->d_u.d_alias));
security_d_instantiate(entry, inode);
spin_lock(&inode->i_lock);
if (S_ISDIR(inode->i_mode) && !hlist_empty(&inode->i_dentry)) {
spin_unlock(&inode->i_lock);
......@@ -1804,7 +1805,6 @@ int d_instantiate_no_diralias(struct dentry *entry, struct inode *inode)
}
__d_instantiate(entry, inode);
spin_unlock(&inode->i_lock);
security_d_instantiate(entry, inode);
return 0;
}
......@@ -1878,6 +1878,7 @@ static struct dentry *__d_obtain_alias(struct inode *inode, int disconnected)
goto out_iput;
}
security_d_instantiate(tmp, inode);
spin_lock(&inode->i_lock);
res = __d_find_any_alias(inode);
if (res) {
......@@ -1900,13 +1901,10 @@ static struct dentry *__d_obtain_alias(struct inode *inode, int disconnected)
hlist_bl_unlock(&tmp->d_sb->s_anon);
spin_unlock(&tmp->d_lock);
spin_unlock(&inode->i_lock);
security_d_instantiate(tmp, inode);
return tmp;
out_iput:
if (res && !IS_ERR(res))
security_d_instantiate(res, inode);
iput(inode);
return res;
}
......@@ -2372,7 +2370,6 @@ static inline void __d_add(struct dentry *dentry, struct inode *inode)
__d_instantiate(dentry, inode);
spin_unlock(&inode->i_lock);
}
security_d_instantiate(dentry, inode);
d_rehash(dentry);
}
......@@ -2387,8 +2384,10 @@ static inline void __d_add(struct dentry *dentry, struct inode *inode)
void d_add(struct dentry *entry, struct inode *inode)
{
if (inode)
if (inode) {
security_d_instantiate(entry, inode);
spin_lock(&inode->i_lock);
}
__d_add(entry, inode);
}
EXPORT_SYMBOL(d_add);
......@@ -2782,6 +2781,7 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
if (!inode)
goto out;
security_d_instantiate(dentry, inode);
spin_lock(&inode->i_lock);
if (S_ISDIR(inode->i_mode)) {
struct dentry *new = __d_find_any_alias(inode);
......@@ -2809,7 +2809,6 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
} else {
__d_move(new, dentry, false);
write_sequnlock(&rename_lock);
security_d_instantiate(new, inode);
}
iput(inode);
return new;
......
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