get_thread_area - 獲取一個線程本地存儲（TLS）區

內容簡介

#include <linux/unistd.h>
#include <asm/ldt.h>

int get_thread_area(struct user_desc **u_info*);

描述

get_thread_area () returns an entry in the current thread’s Thread Local Storage (TLS) array. The index of the entry corresponds to the value of  u_info-> entry_number , passed in by the user. If the value is in bounds,  get_thread_info  copies the corresponding TLS entry into the area yiibaied to by  u_info .

返回值

get_thread_area () returns 0 on success. Otherwise, it returns -1 and sets  *errno * appropriately.

錯誤

標籤

描述

EFAULT

u_info is an invalid yiibaier.

EINVAL

u_info->**entry_number is out of bounds.

遵循於

get_thread_area () 是Linux特有的，並應在該旨在是可移植的程序不被使用。

AVAILABILITY

A version of  get_thread_area () first appeared in Linux 2.5.32.

另請參閱

• modify_ldt (2)

• set_thread_area (2)