GET_THREAD_AREA
Section: Linux Programmer's Manual (2)
Updated: 2012-07-13
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NAME
get_thread_area - get a thread-local storage (TLS) area
SYNOPSIS
#include <linux/unistd.h>
#include <asm/ldt.h>
int get_thread_area(struct user_desc *u_info);
Note:
There is no glibc wrapper for this system call; see NOTES.
DESCRIPTION
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.
RETURN VALUE
get_thread_area()
returns 0 on success.
Otherwise, it returns -1 and sets
errno
appropriately.
ERRORS
- EFAULT
-
u_info is an invalid pointer.
- EINVAL
-
u_info->entry_number is out of bounds.
VERSIONS
A version of
get_thread_area()
first appeared in Linux 2.5.32.
CONFORMING TO
get_thread_area()
is Linux-specific and should not be used in programs
that are intended to be portable.
NOTES
Glibc does not provide a wrapper for this system call,
since it is generally intended for use only by threading libraries.
In the unlikely event that you want to call it directly, use
syscall(2).
SEE ALSO
modify_ldt(2),
set_thread_area(2)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- VERSIONS
-
- CONFORMING TO
-
- NOTES
-
- SEE ALSO
-
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Time: 02:54:48 GMT, September 18, 2014