NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | VERSIONS | CONFORMING TO | NOTES | SEE ALSO | COLOPHON

GET_THREAD_AREA(2)            Linux Programmer's Manual            GET_THREAD_AREA(2)

NAME         top

       get_thread_area - Get a Thread Local Storage (TLS) area

SYNOPSIS         top

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

       int get_thread_area(struct user_desc *u_info);

DESCRIPTION         top

       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         top

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

ERRORS         top

       EFAULT u_info is an invalid pointer.

       EINVAL u_info->entry_number is out of bounds.

VERSIONS         top

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

CONFORMING TO         top

       get_thread_area() is Linux-specific and should not be used in programs that
       are intended to be portable.

NOTES         top

       Glibc does not provide a wrapper for this system call; call it using
       syscall(2).

SEE ALSO         top

       modify_ldt(2), set_thread_area(2)

COLOPHON         top

       This page is part of release 3.23 of the Linux man-pages project.  A
       description of the project, and information about reporting bugs, can be found
       at http://www.kernel.org/doc/man-pages/.

Linux                                 2008-11-27                   GET_THREAD_AREA(2)