chdir, fchdir - change working directory
int chdir(const char *path);
int fchdir(int fd);
chdir changes the current directory to that specified in
fchdir is identical to chdir, only that the directory is
given as an open file descriptor.
On success, zero is returned. On error, -1 is returned,
and errno is set appropriately.
Depending on the file system, other errors can be
returned. The more general errors for chdir are listed
EFAULT path points outside your accessible address space.
path is too long.
ENOENT The file does not exist.
ENOMEM Insufficient kernel memory was available.
A component of path is not a directory.
EACCES Search permission is denied on a component of path.
ELOOP Too many symbolic links were encountered in resolv
EIO An I/O error occurred.
The general errors for fchdir are listed below:
EBADF fd is not a valid file descriptor.
EACCES Search permission was denied on the directory open
The chdir call is compatible with SVr4, SVID, POSIX,
does not have ENOMEM or ELOOP error conditions. X/OPEN
does not have EFAULT, ENOMEM or EIO error conditions.
The fchdir call is compatible with SVr4, 4.4BSD and
X/OPEN. SVr4 documents additional EIO, EINTR, and ENOLINK
error conditions. X/OPEN documents additional EINTR and
EIO error conditions.