|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) */
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:
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.
ATTRIBUTES¶For an explanation of the terms used in this section, see attributes(7).
|canonicalize_file_name ()||Thread safety||MT-Safe|
CONFORMING TO¶This function is a GNU extension.
SEE ALSO¶readlink(2), realpath(3)
COLOPHON¶This page is part of release 4.10 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.