fname_decrypt

函数名称：ame_decrypt() - decrypt a filename* The caller must have allocated sufficient memory for the @oname string.* Return: 0 on success, -errno on failure

函数原型：static int fname_decrypt(struct inode *inode, const struct fscrypt_str *iname, struct fscrypt_str *oname)

返回类型：int

参数：

类型	参数	名称
struct inode *	inode
const struct fscrypt_str *	iname
struct fscrypt_str *	oname

struct skcipher_request * req = NULL

ci等于i_crypt_info

tfm等于The actual crypto transform used for encryption and decryption

101

req等于skcipher_request_alloc() - allocate request data structure*@tfm: cipher handle to be registered with the request*@gfp: memory allocation flag that is handed to kmalloc by the API call

102

如果非req则返回:负ENOMEM

104

skcipher_request_set_callback() - set asynchronous callback function*@req: request handle*@flags: specify zero or an ORing of the flags* CRYPTO_TFM_REQ_MAY_BACKLOG the request queue may back log and* increase the wait queue beyond the initial maximum

109

fscrypt_generate_iv( & iv, 0, ci)

112

初始化散列表项目

113

初始化散列表项目

114

skcipher_request_set_crypt() - set data buffers*@req: request handle*@src: source scatter / gather list*@dst: destination scatter / gather list*@cryptlen: number of bytes to process from @src*@iv: IV for the cipher operation which must comply with the IV

115

res等于crypto_wait_req(rypto_skcipher_decrypt() - decrypt ciphertext*@req: reference to the skcipher_request handle that holds all information* needed to perform the cipher operation* Decrypt ciphertext data using the skcipher_request handle, & wait)

116

skcipher_request_free() - zeroize and free request data structure*@req: request data structure cipher handle to be freed

117

如果res小于0则

118

fscrypt_err(inode, "Filename decryption failed: %d", res)

119

返回:res

122

len等于字符串长度

123

返回:0

**调用者**
名称	描述
fscrypt_fname_disk_to_usr	scrypt_fname_disk_to_usr() - converts a filename from disk space to user* space* The caller must have allocated sufficient memory for the @oname string.* If the key is available, we'll decrypt the disk name; otherwise, we'll encode* it for presentation

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告