keyctl_instantiate_key

函数名称：Instantiate a key with the specified multipart payload and link the key into* the destination keyring if one is given.* The caller must have the appropriate instantiation permit set for this to* work (see keyctl_assume_authority)

函数原型：long keyctl_instantiate_key_iov(key_serial_t id, const struct iovec __user *_payload_iov, unsigned ioc, key_serial_t ringid)

返回类型：long

参数：

类型	参数	名称
key_serial_t	id
const struct iovec __user *	_payload_iov
unsigned	ioc
key_serial_t	ringid

1211

iov等于iovstack

1215

如果非_payload_iov则ioc等于0

1218

ret等于mport_iovec() - Copy an array of &struct iovec from userspace* into the kernel, check that it is valid, and initialize a new* &struct iov_iter iterator to access it.*@type: One of %READ or %WRITE.*@uvector: Pointer to the userspace array.

1220

如果ret小于0则返回:ret

1222

ret等于Instantiate a key with the specified payload and link the key into the* destination keyring if one is given.* The caller must have the appropriate instantiation permit set for this to* work (see keyctl_assume_authority). No other permissions are required.

1223

释放内存

1224

返回:ret

**调用者**
名称	描述
SYSCALL_DEFINE5	The key control system call

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