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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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23 * Copyright (c) 2019, 2020, Whamcloud.
26 * This file is part of Lustre, http://www.lustre.org/
29 #ifndef _LUSTRE_CRYPTO_H_
30 #define _LUSTRE_CRYPTO_H_
33 int ll_set_encflags(struct inode *inode, void *encctx, __u32 encctxlen,
35 void llcrypt_free_ctx(void *encctx, __u32 size);
36 bool ll_sbi_has_test_dummy_encryption(struct ll_sb_info *sbi);
37 bool ll_sbi_has_encrypt(struct ll_sb_info *sbi);
38 void ll_sbi_set_encrypt(struct ll_sb_info *sbi, bool set);
40 #ifdef CONFIG_LL_ENCRYPTION
41 #include <libcfs/crypto/llcrypt.h>
42 #else /* !CONFIG_LL_ENCRYPTION */
43 #ifdef HAVE_LUSTRE_CRYPTO
44 #define __FS_HAS_ENCRYPTION 1
45 #include <linux/fscrypt.h>
47 #define llcrypt_operations fscrypt_operations
48 #define llcrypt_symlink_data fscrypt_symlink_data
49 #define llcrypt_dummy_context_enabled(inode) \
50 fscrypt_dummy_context_enabled(inode)
51 #define llcrypt_has_encryption_key(inode) fscrypt_has_encryption_key(inode)
52 #define llcrypt_encrypt_pagecache_blocks(page, len, offs, gfp_flags) \
53 fscrypt_encrypt_pagecache_blocks(page, len, offs, gfp_flags)
54 #define llcrypt_encrypt_block_inplace(inode, page, len, offs, lblk, gfp_flags) \
55 fscrypt_encrypt_block_inplace(inode, page, len, offs, lblk, gfp_flags)
56 #define llcrypt_decrypt_pagecache_blocks(page, len, offs) \
57 fscrypt_decrypt_pagecache_blocks(page, len, offs)
58 #define llcrypt_decrypt_block_inplace(inode, page, len, offs, lblk_num) \
59 fscrypt_decrypt_block_inplace(inode, page, len, offs, lblk_num)
60 #define llcrypt_inherit_context(parent, child, fs_data, preload) \
61 fscrypt_inherit_context(parent, child, fs_data, preload)
62 #define llcrypt_get_encryption_info(inode) fscrypt_get_encryption_info(inode)
63 #define llcrypt_put_encryption_info(inode) fscrypt_put_encryption_info(inode)
64 #define llcrypt_free_inode(inode) fscrypt_free_inode(inode)
65 #define llcrypt_finalize_bounce_page(pagep) fscrypt_finalize_bounce_page(pagep)
66 #define llcrypt_file_open(inode, filp) fscrypt_file_open(inode, filp)
67 #define llcrypt_ioctl_set_policy(filp, arg) fscrypt_ioctl_set_policy(filp, arg)
68 #define llcrypt_ioctl_get_policy_ex(filp, arg) \
69 fscrypt_ioctl_get_policy_ex(filp, arg)
70 #define llcrypt_ioctl_add_key(filp, arg) fscrypt_ioctl_add_key(filp, arg)
71 #define llcrypt_ioctl_remove_key(filp, arg) fscrypt_ioctl_remove_key(filp, arg)
72 #define llcrypt_ioctl_remove_key_all_users(filp, arg) \
73 fscrypt_ioctl_remove_key_all_users(filp, arg)
74 #define llcrypt_ioctl_get_key_status(filp, arg) \
75 fscrypt_ioctl_get_key_status(filp, arg)
76 #define llcrypt_drop_inode(inode) fscrypt_drop_inode(inode)
77 #define llcrypt_prepare_rename(olddir, olddentry, newdir, newdentry, flags) \
78 fscrypt_prepare_rename(olddir, olddentry, newdir, newdentry, flags)
79 #define llcrypt_prepare_link(old_dentry, dir, dentry) \
80 fscrypt_prepare_link(old_dentry, dir, dentry)
81 #define llcrypt_prepare_setattr(dentry, attr) \
82 fscrypt_prepare_setattr(dentry, attr)
83 #define llcrypt_set_ops(sb, cop) fscrypt_set_ops(sb, cop)
84 #else /* !HAVE_LUSTRE_CRYPTO */
86 #define IS_ENCRYPTED(x) 0
87 #define llcrypt_dummy_context_enabled(inode) NULL
88 /* copied from include/linux/fscrypt.h */
89 #define llcrypt_has_encryption_key(inode) false
90 #define llcrypt_encrypt_pagecache_blocks(page, len, offs, gfp_flags) \
92 #define llcrypt_encrypt_block_inplace(inode, page, len, offs, lblk, gfp_flags) \
94 #define llcrypt_decrypt_pagecache_blocks(page, len, offs) -EOPNOTSUPP
95 #define llcrypt_decrypt_block_inplace(inode, page, len, offs, lblk_num) \
97 #define llcrypt_inherit_context(parent, child, fs_data, preload) -EOPNOTSUPP
98 #define llcrypt_get_encryption_info(inode) -EOPNOTSUPP
99 #define llcrypt_put_encryption_info(inode) do {} while (0)
100 #define llcrypt_free_inode(inode) do {} while (0)
101 #define llcrypt_finalize_bounce_page(pagep) do {} while (0)
102 static inline int llcrypt_file_open(struct inode *inode, struct file *filp)
104 return IS_ENCRYPTED(inode) ? -EOPNOTSUPP : 0;
106 #define llcrypt_ioctl_set_policy(filp, arg) -EOPNOTSUPP
107 #define llcrypt_ioctl_get_policy_ex(filp, arg) -EOPNOTSUPP
108 #define llcrypt_ioctl_add_key(filp, arg) -EOPNOTSUPP
109 #define llcrypt_ioctl_remove_key(filp, arg) -EOPNOTSUPP
110 #define llcrypt_ioctl_remove_key_all_users(filp, arg) -EOPNOTSUPP
111 #define llcrypt_ioctl_get_key_status(filp, arg) -EOPNOTSUPP
112 #define llcrypt_drop_inode(inode) 0
113 #define llcrypt_prepare_rename(olddir, olddentry, newdir, newdentry, flags) 0
114 #define llcrypt_prepare_link(old_dentry, dir, dentry) 0
115 #define llcrypt_prepare_setattr(dentry, attr) 0
116 #define llcrypt_set_ops(sb, cop) do {} while (0)
117 #endif /* HAVE_LUSTRE_CRYPTO */
118 #endif /* !CONFIG_LL_ENCRYPTION */
120 #endif /* _LUSTRE_CRYPTO_H_ */