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-'\" t
-.\" Copyright 2013 Michael Kerrisk <mtk.manpages@gmail.com>
-.\" (Replaces an earlier page by Walter Harms and Michael Kerrisk)
-.\"
-.\" SPDX-License-Identifier: Linux-man-pages-copyleft
-.\"
-.TH canonicalize_file_name 3 2023-10-31 "Linux man-pages 6.7"
-.SH NAME
-canonicalize_file_name \- return the canonicalized absolute pathname
-.SH LIBRARY
-Standard C library
-.RI ( libc ", " \-lc )
-.SH SYNOPSIS
-.nf
-.BR "#define _GNU_SOURCE" " /* See feature_test_macros(7) */"
-.B #include <stdlib.h>
-.P
-.BI "char *canonicalize_file_name(const char *" path ");"
-.fi
-.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.
-.P
-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.
-.P
-The call
-.I canonicalize_file_name(path)
-is equivalent to the call:
-.P
-.in +4n
-.EX
-realpath(path, NULL);
-.EE
-.in
-.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 ATTRIBUTES
-For an explanation of the terms used in this section, see
-.BR attributes (7).
-.TS
-allbox;
-lbx lb lb
-l l l.
-Interface Attribute Value
-T{
-.na
-.nh
-.BR canonicalize_file_name ()
-T} Thread safety MT-Safe
-.TE
-.SH STANDARDS
-GNU.
-.SH SEE ALSO
-.BR readlink (2),
-.BR realpath (3)