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-.\" Copyright 2013 Michael Kerrisk (mtk.manpages@gmail.com).
-.\" (Replaces an earlier page by Walter Harms and Michael Kerrisk)
-.\"
-.\" %%%LICENSE_START(VERBATIM)
-.\" Permission is granted to make and distribute verbatim copies of this
-.\" manual provided the copyright notice and this permission notice are
-.\" preserved on all copies.
-.\"
-.\" Permission is granted to copy and distribute modified versions of this
-.\" manual under the conditions for verbatim copying, provided that the
-.\" entire resulting derived work is distributed under the terms of a
-.\" permission notice identical to this one.
-.\"
-.\" Since the Linux kernel and libraries are constantly changing, this
-.\" manual page may be incorrect or out-of-date.  The author(s) assume no
-.\" responsibility for errors or omissions, or for damages resulting from
-.\" the use of the information contained herein.  The author(s) may not
-.\" have taken the same level of care in the production of this manual,
-.\" which is licensed free of charge, as they might when working
-.\" professionally.
-.\"
-.\" Formatted or processed versions of this manual, if unaccompanied by
-.\" the source, must acknowledge the copyright and authors of this work.
-.\" %%%LICENSE_END
-.\"
-.TH CANONICALIZE_FILE_NAME 3 2013-05-11 "GNU" "Linux Programmer's Manual"
-.SH NAME
-canonicalize_file_name \- return the canonicalized absolute pathname
-.SH SYNOPSIS
-.BR "#define _GNU_SOURCE" "         /* See feature_test_macros(7) */"
-.br
-.B #include <stdlib.h>
-.sp
-.BI "char *canonicalize_file_name(const char *" path ");"
-.SH DESCRIPTION
-The
-.BR canonicalize_file_name ()
-function returns a null-terminated string containing
-the canonicalized absolute pathname corresponding to
-.IR path .
-In the returned string, symbolic links are resolved, as are
-.I .
-and
-.I ..
-pathname components.
-Consecutive slash
-.RI ( / )
-characters are replaced by a single slash.
-
-The returned string is dynamically allocated by
-.BR canonicalize_file_name ()
-and the caller should deallocate it with
-.BR free (3)
-when it is no longer required.
-
-The call
-.I canonicalize_file_name(path)
-is equivalent to the call:
-
-    realpath(path, NULL);
-.SH RETURN VALUE
-On success,
-.BR canonicalize_file_name ()
-returns a null-terminated string.
-On error (e.g., a pathname component is unreadable or does not exist),
-.BR canonicalize_file_name ()
-returns NULL and sets
-.I errno
-to indicate the error.
-.SH ERRORS
-See
-.BR realpath (3).
-.SH CONFORMING TO
-This function is a GNU extension.
-.SH SEE ALSO
-.BR readlink (2),
-.BR realpath (3)
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.