chdir, fchdir - change working directory
On success, zero is returned. On error, -1 is returned, and
errno is set appropriately.
Depending on the filesystem, other errors can be returned. The more general errors for chdir() are listed below:
Search permission is denied for one of the components of
path. (See also path_resolution(7).)
path points outside your accessible address space.
An I/O error occurred.
Too many symbolic links were encountered in resolving
path is too long.
The directory specified in
path does not exist.
Insufficient kernel memory was available.
A component of
path is not a directory.
The general errors for fchdir() are listed below:
Search permission was denied on the directory open on
fd is not a valid file descriptor.
fd does not refer to a directory.
POSIX.1-2001, POSIX.1-2008, SVr4, 4.4BSD.
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