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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-03-25 03:53:42 -0300
commit03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch)
treefa581f6dc1c0596391690d1f67eceef3af8246dc /fs/ecryptfs/inode.c
parentd4e493caf788ef44982e131ff9c786546904d934 (diff)
Linux-libre 4.5-gnu
Diffstat (limited to 'fs/ecryptfs/inode.c')
-rw-r--r--fs/ecryptfs/inode.c53
1 files changed, 29 insertions, 24 deletions
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index e2e47ba5d..4e685ac10 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -41,13 +41,13 @@ static struct dentry *lock_parent(struct dentry *dentry)
struct dentry *dir;
dir = dget_parent(dentry);
- mutex_lock_nested(&(d_inode(dir)->i_mutex), I_MUTEX_PARENT);
+ inode_lock_nested(d_inode(dir), I_MUTEX_PARENT);
return dir;
}
static void unlock_dir(struct dentry *dir)
{
- mutex_unlock(&d_inode(dir)->i_mutex);
+ inode_unlock(d_inode(dir));
dput(dir);
}
@@ -282,9 +282,7 @@ ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry,
if (rc) {
ecryptfs_do_unlink(directory_inode, ecryptfs_dentry,
ecryptfs_inode);
- make_bad_inode(ecryptfs_inode);
- unlock_new_inode(ecryptfs_inode);
- iput(ecryptfs_inode);
+ iget_failed(ecryptfs_inode);
goto out;
}
unlock_new_inode(ecryptfs_inode);
@@ -399,11 +397,11 @@ static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
int rc = 0;
lower_dir_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry->d_parent);
- mutex_lock(&d_inode(lower_dir_dentry)->i_mutex);
+ inode_lock(d_inode(lower_dir_dentry));
lower_dentry = lookup_one_len(ecryptfs_dentry->d_name.name,
lower_dir_dentry,
ecryptfs_dentry->d_name.len);
- mutex_unlock(&d_inode(lower_dir_dentry)->i_mutex);
+ inode_unlock(d_inode(lower_dir_dentry));
if (IS_ERR(lower_dentry)) {
rc = PTR_ERR(lower_dentry);
ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
@@ -428,11 +426,11 @@ static struct dentry *ecryptfs_lookup(struct inode *ecryptfs_dir_inode,
"filename; rc = [%d]\n", __func__, rc);
goto out;
}
- mutex_lock(&d_inode(lower_dir_dentry)->i_mutex);
+ inode_lock(d_inode(lower_dir_dentry));
lower_dentry = lookup_one_len(encrypted_and_encoded_name,
lower_dir_dentry,
encrypted_and_encoded_name_size);
- mutex_unlock(&d_inode(lower_dir_dentry)->i_mutex);
+ inode_unlock(d_inode(lower_dir_dentry));
if (IS_ERR(lower_dentry)) {
rc = PTR_ERR(lower_dentry);
ecryptfs_printk(KERN_DEBUG, "%s: lookup_one_len() returned "
@@ -674,16 +672,24 @@ out:
return rc ? ERR_PTR(rc) : buf;
}
-static const char *ecryptfs_follow_link(struct dentry *dentry, void **cookie)
+static const char *ecryptfs_get_link(struct dentry *dentry,
+ struct inode *inode,
+ struct delayed_call *done)
{
size_t len;
- char *buf = ecryptfs_readlink_lower(dentry, &len);
+ char *buf;
+
+ if (!dentry)
+ return ERR_PTR(-ECHILD);
+
+ buf = ecryptfs_readlink_lower(dentry, &len);
if (IS_ERR(buf))
return buf;
fsstack_copy_attr_atime(d_inode(dentry),
d_inode(ecryptfs_dentry_to_lower(dentry)));
buf[len] = '\0';
- return *cookie = buf;
+ set_delayed_call(done, kfree_link, buf);
+ return buf;
}
/**
@@ -863,9 +869,9 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
if (!rc && lower_ia.ia_valid & ATTR_SIZE) {
struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
- mutex_lock(&d_inode(lower_dentry)->i_mutex);
+ inode_lock(d_inode(lower_dentry));
rc = notify_change(lower_dentry, &lower_ia, NULL);
- mutex_unlock(&d_inode(lower_dentry)->i_mutex);
+ inode_unlock(d_inode(lower_dentry));
}
return rc;
}
@@ -964,9 +970,9 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
if (lower_ia.ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
lower_ia.ia_valid &= ~ATTR_MODE;
- mutex_lock(&d_inode(lower_dentry)->i_mutex);
+ inode_lock(d_inode(lower_dentry));
rc = notify_change(lower_dentry, &lower_ia, NULL);
- mutex_unlock(&d_inode(lower_dentry)->i_mutex);
+ inode_unlock(d_inode(lower_dentry));
out:
fsstack_copy_attr_all(inode, lower_inode);
return rc;
@@ -1042,10 +1048,10 @@ ecryptfs_getxattr_lower(struct dentry *lower_dentry, const char *name,
rc = -EOPNOTSUPP;
goto out;
}
- mutex_lock(&d_inode(lower_dentry)->i_mutex);
+ inode_lock(d_inode(lower_dentry));
rc = d_inode(lower_dentry)->i_op->getxattr(lower_dentry, name, value,
size);
- mutex_unlock(&d_inode(lower_dentry)->i_mutex);
+ inode_unlock(d_inode(lower_dentry));
out:
return rc;
}
@@ -1069,9 +1075,9 @@ ecryptfs_listxattr(struct dentry *dentry, char *list, size_t size)
rc = -EOPNOTSUPP;
goto out;
}
- mutex_lock(&d_inode(lower_dentry)->i_mutex);
+ inode_lock(d_inode(lower_dentry));
rc = d_inode(lower_dentry)->i_op->listxattr(lower_dentry, list, size);
- mutex_unlock(&d_inode(lower_dentry)->i_mutex);
+ inode_unlock(d_inode(lower_dentry));
out:
return rc;
}
@@ -1086,17 +1092,16 @@ static int ecryptfs_removexattr(struct dentry *dentry, const char *name)
rc = -EOPNOTSUPP;
goto out;
}
- mutex_lock(&d_inode(lower_dentry)->i_mutex);
+ inode_lock(d_inode(lower_dentry));
rc = d_inode(lower_dentry)->i_op->removexattr(lower_dentry, name);
- mutex_unlock(&d_inode(lower_dentry)->i_mutex);
+ inode_unlock(d_inode(lower_dentry));
out:
return rc;
}
const struct inode_operations ecryptfs_symlink_iops = {
.readlink = generic_readlink,
- .follow_link = ecryptfs_follow_link,
- .put_link = kfree_put_link,
+ .get_link = ecryptfs_get_link,
.permission = ecryptfs_permission,
.setattr = ecryptfs_setattr,
.getattr = ecryptfs_getattr_link,