diff options
| -rw-r--r-- | fs/crypto/fname.c | 11 | ||||
| -rw-r--r-- | fs/crypto/fscrypt_private.h | 6 | ||||
| -rw-r--r-- | fs/crypto/hooks.c | 30 | ||||
| -rw-r--r-- | fs/crypto/keysetup.c | 33 | ||||
| -rw-r--r-- | fs/crypto/policy.c | 113 | ||||
| -rw-r--r-- | fs/ext4/ext4.h | 6 | ||||
| -rw-r--r-- | fs/ext4/super.c | 16 | ||||
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 | ||||
| -rw-r--r-- | fs/f2fs/super.c | 15 | ||||
| -rw-r--r-- | include/linux/fscrypt.h | 40 |
10 files changed, 132 insertions, 140 deletions
diff --git a/fs/crypto/fname.c b/fs/crypto/fname.c index 47bcfddb278b..eb13408b50a7 100644 --- a/fs/crypto/fname.c +++ b/fs/crypto/fname.c @@ -242,11 +242,11 @@ static int base64_decode(const char *src, int len, u8 *dst) return cp - dst; } -bool fscrypt_fname_encrypted_size(const struct inode *inode, u32 orig_len, - u32 max_len, u32 *encrypted_len_ret) +bool fscrypt_fname_encrypted_size(const union fscrypt_policy *policy, + u32 orig_len, u32 max_len, + u32 *encrypted_len_ret) { - const struct fscrypt_info *ci = inode->i_crypt_info; - int padding = 4 << (fscrypt_policy_flags(&ci->ci_policy) & + int padding = 4 << (fscrypt_policy_flags(policy) & FSCRYPT_POLICY_FLAGS_PAD_MASK); u32 encrypted_len; @@ -418,7 +418,8 @@ int fscrypt_setup_filename(struct inode *dir, const struct qstr *iname, return ret; if (fscrypt_has_encryption_key(dir)) { - if (!fscrypt_fname_encrypted_size(dir, iname->len, + if (!fscrypt_fname_encrypted_size(&dir->i_crypt_info->ci_policy, + iname->len, dir->i_sb->s_cop->max_namelen, &fname->crypto_buf.len)) return -ENAMETOOLONG; diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h index ac3352086ee4..4f5806a3b73d 100644 --- a/fs/crypto/fscrypt_private.h +++ b/fs/crypto/fscrypt_private.h @@ -291,8 +291,9 @@ void fscrypt_generate_iv(union fscrypt_iv *iv, u64 lblk_num, /* fname.c */ int fscrypt_fname_encrypt(const struct inode *inode, const struct qstr *iname, u8 *out, unsigned int olen); -bool fscrypt_fname_encrypted_size(const struct inode *inode, u32 orig_len, - u32 max_len, u32 *encrypted_len_ret); +bool fscrypt_fname_encrypted_size(const union fscrypt_policy *policy, + u32 orig_len, u32 max_len, + u32 *encrypted_len_ret); extern const struct dentry_operations fscrypt_d_ops; /* hkdf.c */ @@ -592,5 +593,6 @@ bool fscrypt_supported_policy(const union fscrypt_policy *policy_u, int fscrypt_policy_from_context(union fscrypt_policy *policy_u, const union fscrypt_context *ctx_u, int ctx_size); +const union fscrypt_policy *fscrypt_policy_to_inherit(struct inode *dir); #endif /* _FSCRYPT_PRIVATE_H */ diff --git a/fs/crypto/hooks.c b/fs/crypto/hooks.c index a399c54947f2..42f5ee9f592d 100644 --- a/fs/crypto/hooks.c +++ b/fs/crypto/hooks.c @@ -193,30 +193,24 @@ int fscrypt_prepare_symlink(struct inode *dir, const char *target, unsigned int len, unsigned int max_len, struct fscrypt_str *disk_link) { - int err; + const union fscrypt_policy *policy; - if (!IS_ENCRYPTED(dir) && !fscrypt_get_dummy_context(dir->i_sb)) { + /* + * To calculate the size of the encrypted symlink target we need to know + * the amount of NUL padding, which is determined by the flags set in + * the encryption policy which will be inherited from the directory. + */ + policy = fscrypt_policy_to_inherit(dir); + if (policy == NULL) { + /* Not encrypted */ disk_link->name = (unsigned char *)target; disk_link->len = len + 1; if (disk_link->len > max_len) return -ENAMETOOLONG; return 0; } - - /* - * To calculate the size of the encrypted symlink target we need to know - * the amount of NUL padding, which is determined by the flags set in - * the encryption policy which will be inherited from the directory. - * The easiest way to get access to this is to just load the directory's - * fscrypt_info, since we'll need it to create the dir_entry anyway. - * - * Note: in test_dummy_encryption mode, @dir may be unencrypted. - */ - err = fscrypt_get_encryption_info(dir); - if (err) - return err; - if (!fscrypt_has_encryption_key(dir)) - return -ENOKEY; + if (IS_ERR(policy)) + return PTR_ERR(policy); /* * Calculate the size of the encrypted symlink and verify it won't @@ -229,7 +223,7 @@ int fscrypt_prepare_symlink(struct inode *dir, const char *target, * counting it (even though it is meaningless for ciphertext) is simpler * for now since filesystems will assume it is there and subtract it. */ - if (!fscrypt_fname_encrypted_size(dir, len, + if (!fscrypt_fname_encrypted_size(policy, len, max_len - sizeof(struct fscrypt_symlink_data), &disk_link->len)) return -ENAMETOOLONG; diff --git a/fs/crypto/keysetup.c b/fs/crypto/keysetup.c index 47f19061ba10..d3c3e5d9b41f 100644 --- a/fs/crypto/keysetup.c +++ b/fs/crypto/keysetup.c @@ -547,7 +547,7 @@ out: /** * fscrypt_get_encryption_info() - set up an inode's encryption key - * @inode: the inode to set up the key for + * @inode: the inode to set up the key for. Must be encrypted. * * Set up ->i_crypt_info, if it hasn't already been done. * @@ -569,18 +569,8 @@ int fscrypt_get_encryption_info(struct inode *inode) res = inode->i_sb->s_cop->get_context(inode, &ctx, sizeof(ctx)); if (res < 0) { - const union fscrypt_context *dummy_ctx = - fscrypt_get_dummy_context(inode->i_sb); - - if (IS_ENCRYPTED(inode) || !dummy_ctx) { - fscrypt_warn(inode, - "Error %d getting encryption context", - res); - return res; - } - /* Fake up a context for an unencrypted directory */ - res = fscrypt_context_size(dummy_ctx); - memcpy(&ctx, dummy_ctx, res); + fscrypt_warn(inode, "Error %d getting encryption context", res); + return res; } res = fscrypt_policy_from_context(&policy, &ctx, res); @@ -627,17 +617,14 @@ EXPORT_SYMBOL(fscrypt_get_encryption_info); int fscrypt_prepare_new_inode(struct inode *dir, struct inode *inode, bool *encrypt_ret) { - int err; + const union fscrypt_policy *policy; u8 nonce[FSCRYPT_FILE_NONCE_SIZE]; - if (!IS_ENCRYPTED(dir) && fscrypt_get_dummy_context(dir->i_sb) == NULL) + policy = fscrypt_policy_to_inherit(dir); + if (policy == NULL) return 0; - - err = fscrypt_get_encryption_info(dir); - if (err) - return err; - if (!fscrypt_has_encryption_key(dir)) - return -ENOKEY; + if (IS_ERR(policy)) + return PTR_ERR(policy); if (WARN_ON_ONCE(inode->i_mode == 0)) return -EINVAL; @@ -654,9 +641,7 @@ int fscrypt_prepare_new_inode(struct inode *dir, struct inode *inode, *encrypt_ret = true; get_random_bytes(nonce, FSCRYPT_FILE_NONCE_SIZE); - return fscrypt_setup_encryption_info(inode, - &dir->i_crypt_info->ci_policy, - nonce, + return fscrypt_setup_encryption_info(inode, policy, nonce, IS_CASEFOLDED(dir) && S_ISDIR(inode->i_mode)); } diff --git a/fs/crypto/policy.c b/fs/crypto/policy.c index 4ff893f7b030..97cf07543651 100644 --- a/fs/crypto/policy.c +++ b/fs/crypto/policy.c @@ -32,6 +32,14 @@ bool fscrypt_policies_equal(const union fscrypt_policy *policy1, return !memcmp(policy1, policy2, fscrypt_policy_size(policy1)); } +static const union fscrypt_policy * +fscrypt_get_dummy_policy(struct super_block *sb) +{ + if (!sb->s_cop->get_dummy_policy) + return NULL; + return sb->s_cop->get_dummy_policy(sb); +} + static bool fscrypt_valid_enc_modes(u32 contents_mode, u32 filenames_mode) { if (contents_mode == FSCRYPT_MODE_AES_256_XTS && @@ -628,6 +636,25 @@ int fscrypt_has_permitted_context(struct inode *parent, struct inode *child) } EXPORT_SYMBOL(fscrypt_has_permitted_context); +/* + * Return the encryption policy that new files in the directory will inherit, or + * NULL if none, or an ERR_PTR() on error. If the directory is encrypted, also + * ensure that its key is set up, so that the new filename can be encrypted. + */ +const union fscrypt_policy *fscrypt_policy_to_inherit(struct inode *dir) +{ + int err; + + if (IS_ENCRYPTED(dir)) { + err = fscrypt_require_key(dir); + if (err) + return ERR_PTR(err); + return &dir->i_crypt_info->ci_policy; + } + + return fscrypt_get_dummy_policy(dir->i_sb); +} + /** * fscrypt_set_context() - Set the fscrypt context of a new inode * @inode: a new inode @@ -672,31 +699,28 @@ EXPORT_SYMBOL_GPL(fscrypt_set_context); * @sb: the filesystem on which test_dummy_encryption is being specified * @arg: the argument to the test_dummy_encryption option. * If no argument was specified, then @arg->from == NULL. - * @dummy_ctx: the filesystem's current dummy context (input/output, see below) + * @dummy_policy: the filesystem's current dummy policy (input/output, see + * below) * * Handle the test_dummy_encryption mount option by creating a dummy encryption - * context, saving it in @dummy_ctx, and adding the corresponding dummy - * encryption key to the filesystem. If the @dummy_ctx is already set, then + * policy, saving it in @dummy_policy, and adding the corresponding dummy + * encryption key to the filesystem. If the @dummy_policy is already set, then * instead validate that it matches @arg. Don't support changing it via * remount, as that is difficult to do safely. * - * The reason we use an fscrypt_context rather than an fscrypt_policy is because - * we mustn't generate a new nonce each time we access a dummy-encrypted - * directory, as that would change the way filenames are encrypted. - * - * Return: 0 on success (dummy context set, or the same context is already set); - * -EEXIST if a different dummy context is already set; + * Return: 0 on success (dummy policy set, or the same policy is already set); + * -EEXIST if a different dummy policy is already set; * or another -errno value. */ int fscrypt_set_test_dummy_encryption(struct super_block *sb, const substring_t *arg, - struct fscrypt_dummy_context *dummy_ctx) + struct fscrypt_dummy_policy *dummy_policy) { const char *argstr = "v2"; const char *argstr_to_free = NULL; struct fscrypt_key_specifier key_spec = { 0 }; int version; - union fscrypt_context *ctx = NULL; + union fscrypt_policy *policy = NULL; int err; if (arg->from) { @@ -706,12 +730,12 @@ int fscrypt_set_test_dummy_encryption(struct super_block *sb, } if (!strcmp(argstr, "v1")) { - version = FSCRYPT_CONTEXT_V1; + version = FSCRYPT_POLICY_V1; key_spec.type = FSCRYPT_KEY_SPEC_TYPE_DESCRIPTOR; memset(key_spec.u.descriptor, 0x42, FSCRYPT_KEY_DESCRIPTOR_SIZE); } else if (!strcmp(argstr, "v2")) { - version = FSCRYPT_CONTEXT_V2; + version = FSCRYPT_POLICY_V2; key_spec.type = FSCRYPT_KEY_SPEC_TYPE_IDENTIFIER; /* key_spec.u.identifier gets filled in when adding the key */ } else { @@ -719,21 +743,8 @@ int fscrypt_set_test_dummy_encryption(struct super_block *sb, goto out; } - if (dummy_ctx->ctx) { - /* - * Note: if we ever make test_dummy_encryption support - * specifying other encryption settings, such as the encryption - * modes, we'll need to compare those settings here. - */ - if (dummy_ctx->ctx->version == version) - err = 0; - else - err = -EEXIST; - goto out; - } - - ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); - if (!ctx) { + policy = kzalloc(sizeof(*policy), GFP_KERNEL); + if (!policy) { err = -ENOMEM; goto out; } @@ -742,18 +753,18 @@ int fscrypt_set_test_dummy_encryption(struct super_block *sb, if (err) goto out; - ctx->version = version; - switch (ctx->version) { - case FSCRYPT_CONTEXT_V1: - ctx->v1.contents_encryption_mode = FSCRYPT_MODE_AES_256_XTS; - ctx->v1.filenames_encryption_mode = FSCRYPT_MODE_AES_256_CTS; - memcpy(ctx->v1.master_key_descriptor, key_spec.u.descriptor, + policy->version = version; + switch (policy->version) { + case FSCRYPT_POLICY_V1: + policy->v1.contents_encryption_mode = FSCRYPT_MODE_AES_256_XTS; + policy->v1.filenames_encryption_mode = FSCRYPT_MODE_AES_256_CTS; + memcpy(policy->v1.master_key_descriptor, key_spec.u.descriptor, FSCRYPT_KEY_DESCRIPTOR_SIZE); break; - case FSCRYPT_CONTEXT_V2: - ctx->v2.contents_encryption_mode = FSCRYPT_MODE_AES_256_XTS; - ctx->v2.filenames_encryption_mode = FSCRYPT_MODE_AES_256_CTS; - memcpy(ctx->v2.master_key_identifier, key_spec.u.identifier, + case FSCRYPT_POLICY_V2: + policy->v2.contents_encryption_mode = FSCRYPT_MODE_AES_256_XTS; + policy->v2.filenames_encryption_mode = FSCRYPT_MODE_AES_256_CTS; + memcpy(policy->v2.master_key_identifier, key_spec.u.identifier, FSCRYPT_KEY_IDENTIFIER_SIZE); break; default: @@ -761,11 +772,19 @@ int fscrypt_set_test_dummy_encryption(struct super_block *sb, err = -EINVAL; goto out; } - dummy_ctx->ctx = ctx; - ctx = NULL; + + if (dummy_policy->policy) { + if (fscrypt_policies_equal(policy, dummy_policy->policy)) + err = 0; + else + err = -EEXIST; + goto out; + } + dummy_policy->policy = policy; + policy = NULL; err = 0; out: - kfree(ctx); + kfree(policy); kfree(argstr_to_free); return err; } @@ -783,10 +802,16 @@ EXPORT_SYMBOL_GPL(fscrypt_set_test_dummy_encryption); void fscrypt_show_test_dummy_encryption(struct seq_file *seq, char sep, struct super_block *sb) { - const union fscrypt_context *ctx = fscrypt_get_dummy_context(sb); + const union fscrypt_policy *policy = fscrypt_get_dummy_policy(sb); + int vers; - if (!ctx) + if (!policy) return; - seq_printf(seq, "%ctest_dummy_encryption=v%d", sep, ctx->version); + + vers = policy->version; + if (vers == FSCRYPT_POLICY_V1) /* Handle numbering quirk */ + vers = 1; + + seq_printf(seq, "%ctest_dummy_encryption=v%d", sep, vers); } EXPORT_SYMBOL_GPL(fscrypt_show_test_dummy_encryption); diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 523e00d7b392..f9a692c0a66c 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1401,7 +1401,7 @@ struct ext4_super_block { #define EXT4_MF_FS_ABORTED 0x0002 /* Fatal error detected */ #ifdef CONFIG_FS_ENCRYPTION -#define DUMMY_ENCRYPTION_ENABLED(sbi) ((sbi)->s_dummy_enc_ctx.ctx != NULL) +#define DUMMY_ENCRYPTION_ENABLED(sbi) ((sbi)->s_dummy_enc_policy.policy != NULL) #else #define DUMMY_ENCRYPTION_ENABLED(sbi) (0) #endif @@ -1596,8 +1596,8 @@ struct ext4_sb_info { atomic_t s_warning_count; atomic_t s_msg_count; - /* Encryption context for '-o test_dummy_encryption' */ - struct fscrypt_dummy_context s_dummy_enc_ctx; + /* Encryption policy for '-o test_dummy_encryption' */ + struct fscrypt_dummy_policy s_dummy_enc_policy; /* * Barrier between writepages ops and changing any inode's JOURNAL_DATA diff --git a/fs/ext4/super.c b/fs/ext4/super.c index ea425b49b345..aa6f64badf58 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1104,7 +1104,7 @@ static void ext4_put_super(struct super_block *sb) crypto_free_shash(sbi->s_chksum_driver); kfree(sbi->s_blockgroup_lock); fs_put_dax(sbi->s_daxdev); - fscrypt_free_dummy_context(&sbi->s_dummy_enc_ctx); + fscrypt_free_dummy_policy(&sbi->s_dummy_enc_policy); #ifdef CONFIG_UNICODE utf8_unload(sbi->s_encoding); #endif @@ -1392,10 +1392,9 @@ retry: return res; } -static const union fscrypt_context * -ext4_get_dummy_context(struct super_block *sb) +static const union fscrypt_policy *ext4_get_dummy_policy(struct super_block *sb) { - return EXT4_SB(sb)->s_dummy_enc_ctx.ctx; + return EXT4_SB(sb)->s_dummy_enc_policy.policy; } static bool ext4_has_stable_inodes(struct super_block *sb) @@ -1414,7 +1413,7 @@ static const struct fscrypt_operations ext4_cryptops = { .key_prefix = "ext4:", .get_context = ext4_get_context, .set_context = ext4_set_context, - .get_dummy_context = ext4_get_dummy_context, + .get_dummy_policy = ext4_get_dummy_policy, .empty_dir = ext4_empty_dir, .max_namelen = EXT4_NAME_LEN, .has_stable_inodes = ext4_has_stable_inodes, @@ -1888,12 +1887,13 @@ static int ext4_set_test_dummy_encryption(struct super_block *sb, * needed to allow it to be set or changed during remount. We do allow * it to be specified during remount, but only if there is no change. */ - if (is_remount && !sbi->s_dummy_enc_ctx.ctx) { + if (is_remount && !sbi->s_dummy_enc_policy.policy) { ext4_msg(sb, KERN_WARNING, "Can't set test_dummy_encryption on remount"); return -1; } - err = fscrypt_set_test_dummy_encryption(sb, arg, &sbi->s_dummy_enc_ctx); + err = fscrypt_set_test_dummy_encryption(sb, arg, + &sbi->s_dummy_enc_policy); if (err) { if (err == -EEXIST) ext4_msg(sb, KERN_WARNING, @@ -4935,7 +4935,7 @@ failed_mount: for (i = 0; i < EXT4_MAXQUOTAS; i++) kfree(get_qf_name(sb, sbi, i)); #endif - fscrypt_free_dummy_context(&sbi->s_dummy_enc_ctx); + fscrypt_free_dummy_policy(&sbi->s_dummy_enc_policy); ext4_blkdev_remove(sbi); brelse(bh); out_fail: diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 0503371f88ed..7c089ff7ff94 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -138,7 +138,7 @@ struct f2fs_mount_info { int fsync_mode; /* fsync policy */ int fs_mode; /* fs mode: LFS or ADAPTIVE */ int bggc_mode; /* bggc mode: off, on or sync */ - struct fscrypt_dummy_context dummy_enc_ctx; /* test dummy encryption */ + struct fscrypt_dummy_policy dummy_enc_policy; /* test dummy encryption */ block_t unusable_cap_perc; /* percentage for cap */ block_t unusable_cap; /* Amount of space allowed to be * unusable when disabling checkpoint diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index dfa072fa8081..f05ee33f5f26 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -433,12 +433,12 @@ static int f2fs_set_test_dummy_encryption(struct super_block *sb, * needed to allow it to be set or changed during remount. We do allow * it to be specified during remount, but only if there is no change. */ - if (is_remount && !F2FS_OPTION(sbi).dummy_enc_ctx.ctx) { + if (is_remount && !F2FS_OPTION(sbi).dummy_enc_policy.policy) { f2fs_warn(sbi, "Can't set test_dummy_encryption on remount"); return -EINVAL; } err = fscrypt_set_test_dummy_encryption( - sb, arg, &F2FS_OPTION(sbi).dummy_enc_ctx); + sb, arg, &F2FS_OPTION(sbi).dummy_enc_policy); if (err) { if (err == -EEXIST) f2fs_warn(sbi, @@ -1275,7 +1275,7 @@ static void f2fs_put_super(struct super_block *sb) for (i = 0; i < MAXQUOTAS; i++) kfree(F2FS_OPTION(sbi).s_qf_names[i]); #endif - fscrypt_free_dummy_context(&F2FS_OPTION(sbi).dummy_enc_ctx); + fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); destroy_percpu_info(sbi); for (i = 0; i < NR_PAGE_TYPE; i++) kvfree(sbi->write_io[i]); @@ -2482,10 +2482,9 @@ static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, ctx, len, fs_data, XATTR_CREATE); } -static const union fscrypt_context * -f2fs_get_dummy_context(struct super_block *sb) +static const union fscrypt_policy *f2fs_get_dummy_policy(struct super_block *sb) { - return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_ctx.ctx; + return F2FS_OPTION(F2FS_SB(sb)).dummy_enc_policy.policy; } static bool f2fs_has_stable_inodes(struct super_block *sb) @@ -2523,7 +2522,7 @@ static const struct fscrypt_operations f2fs_cryptops = { .key_prefix = "f2fs:", .get_context = f2fs_get_context, .set_context = f2fs_set_context, - .get_dummy_context = f2fs_get_dummy_context, + .get_dummy_policy = f2fs_get_dummy_policy, .empty_dir = f2fs_empty_dir, .max_namelen = F2FS_NAME_LEN, .has_stable_inodes = f2fs_has_stable_inodes, @@ -3864,7 +3863,7 @@ free_options: for (i = 0; i < MAXQUOTAS; i++) kfree(F2FS_OPTION(sbi).s_qf_names[i]); #endif - fscrypt_free_dummy_context(&F2FS_OPTION(sbi).dummy_enc_ctx); + fscrypt_free_dummy_policy(&F2FS_OPTION(sbi).dummy_enc_policy); kvfree(options); free_sb_buf: kfree(raw_super); diff --git a/include/linux/fscrypt.h b/include/linux/fscrypt.h index 39e7397a3f10..b3b0c5675c6b 100644 --- a/include/linux/fscrypt.h +++ b/include/linux/fscrypt.h @@ -21,7 +21,7 @@ #define FS_CRYPTO_BLOCK_SIZE 16 -union fscrypt_context; +union fscrypt_policy; struct fscrypt_info; struct seq_file; @@ -62,8 +62,7 @@ struct fscrypt_operations { int (*get_context)(struct inode *inode, void *ctx, size_t len); int (*set_context)(struct inode *inode, const void *ctx, size_t len, void *fs_data); - const union fscrypt_context *(*get_dummy_context)( - struct super_block *sb); + const union fscrypt_policy *(*get_dummy_policy)(struct super_block *sb); bool (*empty_dir)(struct inode *inode); unsigned int max_namelen; bool (*has_stable_inodes)(struct super_block *sb); @@ -101,14 +100,6 @@ static inline bool fscrypt_needs_contents_encryption(const struct inode *inode) return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode); } -static inline const union fscrypt_context * -fscrypt_get_dummy_context(struct super_block *sb) -{ - if (!sb->s_cop->get_dummy_context) - return NULL; - return sb->s_cop->get_dummy_context(sb); -} - /* * When d_splice_alias() moves a directory's encrypted alias to its decrypted * alias as a result of the encryption key being added, DCACHE_ENCRYPTED_NAME @@ -158,20 +149,21 @@ int fscrypt_ioctl_get_nonce(struct file *filp, void __user *arg); int fscrypt_has_permitted_context(struct inode *parent, struct inode *child); int fscrypt_set_context(struct inode *inode, void *fs_data); -struct fscrypt_dummy_context { - const union fscrypt_context *ctx; +struct fscrypt_dummy_policy { + const union fscrypt_policy *policy; }; -int fscrypt_set_test_dummy_encryption(struct super_block *sb, - const substring_t *arg, - struct fscrypt_dummy_context *dummy_ctx); +int fscrypt_set_test_dummy_encryption( + struct super_block *sb, + const substring_t *arg, + struct fscrypt_dummy_policy *dummy_policy); void fscrypt_show_test_dummy_encryption(struct seq_file *seq, char sep, struct super_block *sb); static inline void -fscrypt_free_dummy_context(struct fscrypt_dummy_context *dummy_ctx) +fscrypt_free_dummy_policy(struct fscrypt_dummy_policy *dummy_policy) { - kfree(dummy_ctx->ctx); - dummy_ctx->ctx = NULL; + kfree(dummy_policy->policy); + dummy_policy->policy = NULL; } /* keyring.c */ @@ -250,12 +242,6 @@ static inline bool fscrypt_needs_contents_encryption(const struct inode *inode) return false; } -static inline const union fscrypt_context * -fscrypt_get_dummy_context(struct super_block *sb) -{ - return NULL; -} - static inline void fscrypt_handle_d_move(struct dentry *dentry) { } @@ -346,7 +332,7 @@ static inline int fscrypt_set_context(struct inode *inode, void *fs_data) return -EOPNOTSUPP; } -struct fscrypt_dummy_context { +struct fscrypt_dummy_policy { }; static inline void fscrypt_show_test_dummy_encryption(struct seq_file *seq, @@ -356,7 +342,7 @@ static inline void fscrypt_show_test_dummy_encryption(struct seq_file *seq, } static inline void -fscrypt_free_dummy_context(struct fscrypt_dummy_context *dummy_ctx) +fscrypt_free_dummy_policy(struct fscrypt_dummy_policy *dummy_policy) { } |