Section: Linux Programmer's Manual (2)
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set_thread_area - set a thread local storage (TLS) area
int set_thread_area(struct user_desc *u_info);
There is no glibc wrapper for this system call; see NOTES.
sets an entry in the current thread's thread-local storage (TLS) array.
The TLS array entry set by
corresponds to the value of
passed in by the user.
If this value is in bounds,
copies the TLS descriptor pointed to by
into the thread's TLS array.
is passed an
of -1, it uses a free TLS entry.
finds a free TLS entry, the value of
is set upon return to show which entry was changed.
returns 0 on success, and -1 on failure, with
u_info->entry_number is out of bounds.
u_info is an invalid pointer.
A free TLS entry could not be located.
A version of
first appeared in Linux 2.5.29.
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 generally intended only for use by threading libraries.
In the unlikely event that you want to call it directly, use
This page is part of release 3.74 of the Linux
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can be found at
- RETURN VALUE
- CONFORMING TO
- SEE ALSO