mirror of https://github.com/mkerrisk/man-pages
46 lines
1.3 KiB
Groff
46 lines
1.3 KiB
Groff
.\" Copyright (C) 2003 Free Software Foundation, Inc.
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.\" This file is distributed according to the GNU General Public License.
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.\" See the file COPYING in the top level source directory for details.
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.\"
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.\" Written by Kent Yoder.
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.TH "GET_THREAD_AREA" 2 "2003-02-21" "Linux 2.5.32" "Linux Programmer's Manual"
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.SH NAME
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get_thread_area \- Get a Thread Local Storage (TLS) area
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.SH "SYNOPSIS"
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.B #include <linux/unistd.h>
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.br
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.B #include <asm/ldt.h>
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.sp
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.BI "int get_thread_area(struct user_desc *" u_info );
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.SH "DESCRIPTION"
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.BR get_thread_area ()
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returns an entry in the current thread's Thread Local Storage (TLS) array.
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The index of the entry corresponds to the value
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of \fIu_info->\fR\fIentry_number\fR, passed in by the user.
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If the value is in bounds, \fBget_thread_info\fR copies the corresponding
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TLS entry into the area pointed to by \fIu_info\fR.
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.SH "RETURN VALUE"
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.BR get_thread_area ()
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returns 0 on success.
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Otherwise, it returns \-1 and sets
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.I errno
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appropriately.
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.SH ERRORS
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.TP
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.B EFAULT
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\fIu_info\fR is an invalid pointer.
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.TP
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.B EINVAL
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\fIu_info->\fR\fIentry_number\fR is out of bounds.
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.SH "CONFORMING TO"
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.BR get_thread_area ()
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is Linux specific and should not be used in programs
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that are intended to be portable.
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.SH AVAILABILITY
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A version of
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.BR get_thread_area ()
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first appeared in Linux 2.5.32.
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.SH "SEE ALSO"
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.BR modify_ldt (2),
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.BR set_thread_area (2)
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