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)

COLOPHON

       This page is part of release 3.54 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/.