| CANONICALIZE_FILE_NAME(3) |
Linux Programmer's Manual |
CANONICALIZE_FILE_NAME(3) |
NAME
canonicalize_file_name - return the canonicalized absolute pathname
SYNOPSIS
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include <stdlib.h>
char *canonicalize_file_name(const char *
path
);
DESCRIPTION
The
canonicalize_file_name() function returns a null-terminated string containing the canonicalized absolute pathname corresponding to
path. In the returned string, symbolic links are resolved, as are
. and
.. pathname components. Consecutive slash (
/) characters are replaced by a single slash.
The returned string is dynamically allocated by
canonicalize_file_name() and the caller should deallocate it with
free(3) when it is no longer required.
The call
canonicalize_file_name(path) is equivalent to the call:
realpath(path, NULL);
RETURN VALUE
On success,
canonicalize_file_name() returns a null-terminated string. On error (e.g., a pathname component is unreadable or does not exist),
canonicalize_file_name() returns NULL and sets
errno to indicate the error.
ERRORS
See
realpath(3).
CONFORMING TO
This function is a GNU extension.
SEE ALSO
readlink(2),
realpath(3)
COLOPHON
This page is part of release 3.53 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/.