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Diffstat (limited to 'fs/ecryptfs/inode.c')
-rw-r--r--fs/ecryptfs/inode.c84
1 files changed, 53 insertions, 31 deletions
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 58d0f7187997..18e9285fbb4c 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -141,7 +141,8 @@ static int ecryptfs_do_unlink(struct inode *dir, struct dentry *dentry,
else if (d_unhashed(lower_dentry))
rc = -EINVAL;
else
- rc = vfs_unlink(lower_dir_inode, lower_dentry, NULL);
+ rc = vfs_unlink(&init_user_ns, lower_dir_inode, lower_dentry,
+ NULL);
if (rc) {
printk(KERN_ERR "Error in vfs_unlink; rc = [%d]\n", rc);
goto out_unlock;
@@ -180,7 +181,8 @@ ecryptfs_do_create(struct inode *directory_inode,
lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
lower_dir_dentry = lock_parent(lower_dentry);
- rc = vfs_create(d_inode(lower_dir_dentry), lower_dentry, mode, true);
+ rc = vfs_create(&init_user_ns, d_inode(lower_dir_dentry), lower_dentry,
+ mode, true);
if (rc) {
printk(KERN_ERR "%s: Failure to create dentry in lower fs; "
"rc = [%d]\n", __func__, rc);
@@ -190,7 +192,8 @@ ecryptfs_do_create(struct inode *directory_inode,
inode = __ecryptfs_get_inode(d_inode(lower_dentry),
directory_inode->i_sb);
if (IS_ERR(inode)) {
- vfs_unlink(d_inode(lower_dir_dentry), lower_dentry, NULL);
+ vfs_unlink(&init_user_ns, d_inode(lower_dir_dentry),
+ lower_dentry, NULL);
goto out_lock;
}
fsstack_copy_attr_times(directory_inode, d_inode(lower_dir_dentry));
@@ -254,7 +257,8 @@ out:
* Returns zero on success; non-zero on error condition
*/
static int
-ecryptfs_create(struct inode *directory_inode, struct dentry *ecryptfs_dentry,
+ecryptfs_create(struct user_namespace *mnt_userns,
+ struct inode *directory_inode, struct dentry *ecryptfs_dentry,
umode_t mode, bool excl)
{
struct inode *ecryptfs_inode;
@@ -436,8 +440,8 @@ static int ecryptfs_link(struct dentry *old_dentry, struct inode *dir,
dget(lower_old_dentry);
dget(lower_new_dentry);
lower_dir_dentry = lock_parent(lower_new_dentry);
- rc = vfs_link(lower_old_dentry, d_inode(lower_dir_dentry),
- lower_new_dentry, NULL);
+ rc = vfs_link(lower_old_dentry, &init_user_ns,
+ d_inode(lower_dir_dentry), lower_new_dentry, NULL);
if (rc || d_really_is_negative(lower_new_dentry))
goto out_lock;
rc = ecryptfs_interpose(lower_new_dentry, new_dentry, dir->i_sb);
@@ -460,7 +464,8 @@ static int ecryptfs_unlink(struct inode *dir, struct dentry *dentry)
return ecryptfs_do_unlink(dir, dentry, d_inode(dentry));
}
-static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
+static int ecryptfs_symlink(struct user_namespace *mnt_userns,
+ struct inode *dir, struct dentry *dentry,
const char *symname)
{
int rc;
@@ -481,7 +486,7 @@ static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
strlen(symname));
if (rc)
goto out_lock;
- rc = vfs_symlink(d_inode(lower_dir_dentry), lower_dentry,
+ rc = vfs_symlink(&init_user_ns, d_inode(lower_dir_dentry), lower_dentry,
encoded_symname);
kfree(encoded_symname);
if (rc || d_really_is_negative(lower_dentry))
@@ -499,7 +504,8 @@ out_lock:
return rc;
}
-static int ecryptfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
+static int ecryptfs_mkdir(struct user_namespace *mnt_userns, struct inode *dir,
+ struct dentry *dentry, umode_t mode)
{
int rc;
struct dentry *lower_dentry;
@@ -507,7 +513,8 @@ static int ecryptfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode
lower_dentry = ecryptfs_dentry_to_lower(dentry);
lower_dir_dentry = lock_parent(lower_dentry);
- rc = vfs_mkdir(d_inode(lower_dir_dentry), lower_dentry, mode);
+ rc = vfs_mkdir(&init_user_ns, d_inode(lower_dir_dentry), lower_dentry,
+ mode);
if (rc || d_really_is_negative(lower_dentry))
goto out;
rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);
@@ -541,7 +548,7 @@ static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
else if (d_unhashed(lower_dentry))
rc = -EINVAL;
else
- rc = vfs_rmdir(lower_dir_inode, lower_dentry);
+ rc = vfs_rmdir(&init_user_ns, lower_dir_inode, lower_dentry);
if (!rc) {
clear_nlink(d_inode(dentry));
fsstack_copy_attr_times(dir, lower_dir_inode);
@@ -555,7 +562,8 @@ static int ecryptfs_rmdir(struct inode *dir, struct dentry *dentry)
}
static int
-ecryptfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
+ecryptfs_mknod(struct user_namespace *mnt_userns, struct inode *dir,
+ struct dentry *dentry, umode_t mode, dev_t dev)
{
int rc;
struct dentry *lower_dentry;
@@ -563,7 +571,8 @@ ecryptfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev
lower_dentry = ecryptfs_dentry_to_lower(dentry);
lower_dir_dentry = lock_parent(lower_dentry);
- rc = vfs_mknod(d_inode(lower_dir_dentry), lower_dentry, mode, dev);
+ rc = vfs_mknod(&init_user_ns, d_inode(lower_dir_dentry), lower_dentry,
+ mode, dev);
if (rc || d_really_is_negative(lower_dentry))
goto out;
rc = ecryptfs_interpose(lower_dentry, dentry, dir->i_sb);
@@ -579,9 +588,9 @@ out:
}
static int
-ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
- struct inode *new_dir, struct dentry *new_dentry,
- unsigned int flags)
+ecryptfs_rename(struct user_namespace *mnt_userns, struct inode *old_dir,
+ struct dentry *old_dentry, struct inode *new_dir,
+ struct dentry *new_dentry, unsigned int flags)
{
int rc;
struct dentry *lower_old_dentry;
@@ -590,6 +599,7 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct dentry *lower_new_dir_dentry;
struct dentry *trap;
struct inode *target_inode;
+ struct renamedata rd = {};
if (flags)
return -EINVAL;
@@ -619,9 +629,14 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
rc = -ENOTEMPTY;
goto out_lock;
}
- rc = vfs_rename(d_inode(lower_old_dir_dentry), lower_old_dentry,
- d_inode(lower_new_dir_dentry), lower_new_dentry,
- NULL, 0);
+
+ rd.old_mnt_userns = &init_user_ns;
+ rd.old_dir = d_inode(lower_old_dir_dentry);
+ rd.old_dentry = lower_old_dentry;
+ rd.new_mnt_userns = &init_user_ns;
+ rd.new_dir = d_inode(lower_new_dir_dentry);
+ rd.new_dentry = lower_new_dentry;
+ rc = vfs_rename(&rd);
if (rc)
goto out_lock;
if (target_inode)
@@ -855,16 +870,19 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
inode_lock(d_inode(lower_dentry));
- rc = notify_change(lower_dentry, &lower_ia, NULL);
+ rc = notify_change(&init_user_ns, lower_dentry,
+ &lower_ia, NULL);
inode_unlock(d_inode(lower_dentry));
}
return rc;
}
static int
-ecryptfs_permission(struct inode *inode, int mask)
+ecryptfs_permission(struct user_namespace *mnt_userns, struct inode *inode,
+ int mask)
{
- return inode_permission(ecryptfs_inode_to_lower(inode), mask);
+ return inode_permission(&init_user_ns,
+ ecryptfs_inode_to_lower(inode), mask);
}
/**
@@ -879,7 +897,8 @@ ecryptfs_permission(struct inode *inode, int mask)
* All other metadata changes will be passed right to the lower filesystem,
* and we will just update our inode to look like the lower.
*/
-static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
+static int ecryptfs_setattr(struct user_namespace *mnt_userns,
+ struct dentry *dentry, struct iattr *ia)
{
int rc = 0;
struct dentry *lower_dentry;
@@ -933,7 +952,7 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
}
mutex_unlock(&crypt_stat->cs_mutex);
- rc = setattr_prepare(dentry, ia);
+ rc = setattr_prepare(&init_user_ns, dentry, ia);
if (rc)
goto out;
if (ia->ia_valid & ATTR_SIZE) {
@@ -959,14 +978,15 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
lower_ia.ia_valid &= ~ATTR_MODE;
inode_lock(d_inode(lower_dentry));
- rc = notify_change(lower_dentry, &lower_ia, NULL);
+ rc = notify_change(&init_user_ns, lower_dentry, &lower_ia, NULL);
inode_unlock(d_inode(lower_dentry));
out:
fsstack_copy_attr_all(inode, lower_inode);
return rc;
}
-static int ecryptfs_getattr_link(const struct path *path, struct kstat *stat,
+static int ecryptfs_getattr_link(struct user_namespace *mnt_userns,
+ const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int flags)
{
struct dentry *dentry = path->dentry;
@@ -975,7 +995,7 @@ static int ecryptfs_getattr_link(const struct path *path, struct kstat *stat,
mount_crypt_stat = &ecryptfs_superblock_to_private(
dentry->d_sb)->mount_crypt_stat;
- generic_fillattr(d_inode(dentry), stat);
+ generic_fillattr(&init_user_ns, d_inode(dentry), stat);
if (mount_crypt_stat->flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES) {
char *target;
size_t targetsiz;
@@ -991,7 +1011,8 @@ static int ecryptfs_getattr_link(const struct path *path, struct kstat *stat,
return rc;
}
-static int ecryptfs_getattr(const struct path *path, struct kstat *stat,
+static int ecryptfs_getattr(struct user_namespace *mnt_userns,
+ const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int flags)
{
struct dentry *dentry = path->dentry;
@@ -1003,7 +1024,7 @@ static int ecryptfs_getattr(const struct path *path, struct kstat *stat,
if (!rc) {
fsstack_copy_attr_all(d_inode(dentry),
ecryptfs_inode_to_lower(d_inode(dentry)));
- generic_fillattr(d_inode(dentry), stat);
+ generic_fillattr(&init_user_ns, d_inode(dentry), stat);
stat->blocks = lower_stat.blocks;
}
return rc;
@@ -1025,7 +1046,7 @@ ecryptfs_setxattr(struct dentry *dentry, struct inode *inode,
goto out;
}
inode_lock(lower_inode);
- rc = __vfs_setxattr_locked(lower_dentry, name, value, size, flags, NULL);
+ rc = __vfs_setxattr_locked(&init_user_ns, lower_dentry, name, value, size, flags, NULL);
inode_unlock(lower_inode);
if (!rc && inode)
fsstack_copy_attr_all(inode, lower_inode);
@@ -1091,7 +1112,7 @@ static int ecryptfs_removexattr(struct dentry *dentry, struct inode *inode,
goto out;
}
inode_lock(lower_inode);
- rc = __vfs_removexattr(lower_dentry, name);
+ rc = __vfs_removexattr(&init_user_ns, lower_dentry, name);
inode_unlock(lower_inode);
out:
return rc;
@@ -1135,6 +1156,7 @@ static int ecryptfs_xattr_get(const struct xattr_handler *handler,
}
static int ecryptfs_xattr_set(const struct xattr_handler *handler,
+ struct user_namespace *mnt_userns,
struct dentry *dentry, struct inode *inode,
const char *name, const void *value, size_t size,
int flags)