super.c (b32e3dc7860d00124fa432dba09667e647cb9bcc) super.c (332ab16f830f59e7621ae8eb2c353dc135a316f6)
1/**
2 * eCryptfs: Linux filesystem encryption layer
3 *
4 * Copyright (C) 1997-2003 Erez Zadok
5 * Copyright (C) 2001-2003 Stony Brook University
6 * Copyright (C) 2004-2006 International Business Machines Corp.
7 * Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
8 * Michael C. Thompson <mcthomps@us.ibm.com>

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50{
51 struct ecryptfs_inode_info *inode_info;
52 struct inode *inode = NULL;
53
54 inode_info = kmem_cache_alloc(ecryptfs_inode_info_cache, GFP_KERNEL);
55 if (unlikely(!inode_info))
56 goto out;
57 ecryptfs_init_crypt_stat(&inode_info->crypt_stat);
1/**
2 * eCryptfs: Linux filesystem encryption layer
3 *
4 * Copyright (C) 1997-2003 Erez Zadok
5 * Copyright (C) 2001-2003 Stony Brook University
6 * Copyright (C) 2004-2006 International Business Machines Corp.
7 * Author(s): Michael A. Halcrow <mahalcro@us.ibm.com>
8 * Michael C. Thompson <mcthomps@us.ibm.com>

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50{
51 struct ecryptfs_inode_info *inode_info;
52 struct inode *inode = NULL;
53
54 inode_info = kmem_cache_alloc(ecryptfs_inode_info_cache, GFP_KERNEL);
55 if (unlikely(!inode_info))
56 goto out;
57 ecryptfs_init_crypt_stat(&inode_info->crypt_stat);
58 mutex_init(&inode_info->lower_file_mutex);
59 atomic_set(&inode_info->lower_file_count, 0);
58 inode_info->lower_file = NULL;
59 inode = &inode_info->vfs_inode;
60out:
61 return inode;
62}
63
64static void ecryptfs_i_callback(struct rcu_head *head)
65{

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72}
73
74/**
75 * ecryptfs_destroy_inode
76 * @inode: The ecryptfs inode
77 *
78 * This is used during the final destruction of the inode. All
79 * allocation of memory related to the inode, including allocated
60 inode_info->lower_file = NULL;
61 inode = &inode_info->vfs_inode;
62out:
63 return inode;
64}
65
66static void ecryptfs_i_callback(struct rcu_head *head)
67{

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74}
75
76/**
77 * ecryptfs_destroy_inode
78 * @inode: The ecryptfs inode
79 *
80 * This is used during the final destruction of the inode. All
81 * allocation of memory related to the inode, including allocated
80 * memory in the crypt_stat struct, will be released here. This
81 * function also fput()'s the persistent file for the lower inode.
82 * memory in the crypt_stat struct, will be released here.
82 * There should be no chance that this deallocation will be missed.
83 */
84static void ecryptfs_destroy_inode(struct inode *inode)
85{
86 struct ecryptfs_inode_info *inode_info;
87
88 inode_info = ecryptfs_inode_to_private(inode);
83 * There should be no chance that this deallocation will be missed.
84 */
85static void ecryptfs_destroy_inode(struct inode *inode)
86{
87 struct ecryptfs_inode_info *inode_info;
88
89 inode_info = ecryptfs_inode_to_private(inode);
89 if (inode_info->lower_file) {
90 struct dentry *lower_dentry =
91 inode_info->lower_file->f_dentry;
92
93 BUG_ON(!lower_dentry);
94 if (lower_dentry->d_inode) {
95 fput(inode_info->lower_file);
96 inode_info->lower_file = NULL;
97 }
98 }
90 BUG_ON(inode_info->lower_file);
99 ecryptfs_destroy_crypt_stat(&inode_info->crypt_stat);
100 call_rcu(&inode->i_rcu, ecryptfs_i_callback);
101}
102
103/**
104 * ecryptfs_init_inode
105 * @inode: The ecryptfs inode
106 *

--- 99 unchanged lines hidden --- 		91 ecryptfs_destroy_crypt_stat(&inode_info->crypt_stat);
92 call_rcu(&inode->i_rcu, ecryptfs_i_callback);
93}
94
95/**
96 * ecryptfs_init_inode
97 * @inode: The ecryptfs inode
98 *

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