dirname
Synopsis
#include <libgen.h>
char *dirname(char *path);
Status
Partially implemented
Conformance
IEEE Std 1003.1-2017
Description
The dirname() function shall take a pointer to a character string that contains a path name, and return a pointer to a
string that is a path name of the parent directory of that file. The dirname() function shall not perform path name
resolution. The result shall not be affected by whether path exists or by its file type. Trailing '/'
characters in the path that are not also leading '/' characters shall not be counted as part of the path.
If path does not contain a '/', then dirname() shall return a pointer to the string ".". If
path is a null pointer or points to an empty string, dirname() shall return a pointer to the string "."
.
The dirname() function may modify the string pointed to by path, and may return a pointer to static storage that
may then be overwritten by a subsequent call to dirname().
The dirname() function need not be thread-safe.
Return value
The dirname() function shall return a pointer to a string as described above.
The dirname() function may modify the string pointed to by path, and may return a pointer to internal storage. The
returned pointer might be invalidated, or the storage might be overwritten by a subsequent call to dirname().
The returned pointer might also be invalidated if the calling thread is terminated.
Errors
No errors are defined.
Tests
Untested
Known bugs
None