函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\keys\keyctl.c Create Date:2022-07-27 19:55:11
Last Modify:2020-03-18 07:59:52 Copyright©Brick
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函数名称：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.

函数原型：long keyctl_instantiate_key(key_serial_t id, const void __user *_payload, size_t plen, key_serial_t ringid)

返回类型：long

参数：

类型参数名称
key_serial_tid
const void __user *_payload
size_tplen
key_serial_tringid
1181  如果_payload且plen则
1186  ret等于import_single_range(WRITE, (void__user * )_payload, plen, & iov, & from)
1188  如果此条件成立可能性小(为编译器优化)(ret)则返回:ret
1191  返回: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.
1194  返回: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.
调用者
名称描述
SYSCALL_DEFINE5The key control system call
COMPAT_SYSCALL_DEFINE5The key control system call, 32-bit compatibility version for 64-bit archs