klp_check

函数名称：Determine whether it's safe to transition the task to the target patch state* by looking for any to-be-patched or to-be-unpatched functions on its stack.

函数原型：static int klp_check_stack(struct task_struct *task, char *err_buf)

返回类型：int

参数：

类型	参数	名称
struct task_struct *	task
char *	err_buf

249

ret等于stack_trace_save_tsk_reliable(task, entries, ARRAY_SIZE - get the number of elements in array @arr*@arr: array to be sized(entries))

250

如果ret小于0则

251

snprintf - Format a string and place it in a buffer*@buf: The buffer to place the result into*@size: The size of the buffer, including the trailing null space*@fmt: The format string to use*@

254

返回:ret

256

nr_entries等于ret

258

klp_for_each_object(klp_transition_patch, obj)

259

如果非patched则继续下一循环

261

klp_for_each_func(obj, func)

262

ret等于Determine whether the given stack trace includes any references to a* to-be-patched or to-be-unpatched function.

263

如果ret则

264

snprintf - Format a string and place it in a buffer*@buf: The buffer to place the result into*@size: The size of the buffer, including the trailing null space*@fmt: The format string to use*@

268

返回:ret

273

返回:0

**调用者**
名称	描述
klp_try_switch_task	Try to safely switch a task to the target patch state. If it's currently* running, or it's sleeping on a to-be-patched or to-be-unpatched function, or* if the stack is unreliable, return false.

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