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int get_thread_area(struct user_desc *u_info);
Note: There is no glibc wrapper for this system call; see NOTES.
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_area() copies the corresponding TLS entry into the
area pointed to by u_info.
get_thread_area() returns 0 on success. Otherwise, it returns -1 and
sets errno appropriately.
EFAULT u_info is an invalid pointer.
EINVAL u_info->entry_number is out of bounds.
A version of get_thread_area() first appeared in Linux 2.5.32.
get_thread_area() is Linux-specific and should not be used in programs
that are intended to be portable.
Glibc does not provide a wrapper for this system call, since it is gen-
erally intended for use only by threading libraries. In the unlikely
event that you want to call it directly, use syscall(2).
Linux 2012-07-13 GET_THREAD_AREA(2)