canonicalize_file_name — return the canonicalized absolute pathname
#define _GNU_SOURCE /* See feature_test_macros(7) */ #include <stdlib.h>
char
*canonicalize_file_name( |
const char *path); |
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);
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.
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
canonicalize_file_name() |
Thread safety | MT-Safe |
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