NAME

chdir, fchdir − change working directory

SYNOPSIS

#include <unistd.h>

int chdir(path)
char ∗path;

int fchdir(fildes)
int fildes;

DESCRIPTION

chdir and fchdir cause a directory pointed to by path or fildes to become the current working directory, the starting point for path searches for path names not beginning with /.  path points to the path name of a directory.  The fildes argument to fchdir is an open file descriptor of a directory. 

In order for a directory to become the current directory, a process must have execute (search) access to the directory. 

chdir will fail and the current working directory will be unchanged if one or more of the following are true:

EACCES Search permission is denied for any component of the path name. 

EFAULT path points outside the allocated address space of the process. 

ELOOP Too many symbolic links were encountered in translating path.

ENAMETOOLONG
The length of the path argument exceeds {PATH_MAX}, or the length of a path component exceeds {NAME_MAX} while _POSIX_NO_TRUNC is in effect. 

ENOTDIR A component of the path name is not a directory. 

ENOENT Either a component of the path prefix or the directory named by path does not exist or is a null pathname. 

fchdir will fail and the current working directory will be unchanged if one or more of the following are true:

EACCES Search permission is denied for fildes. 

EBADF fildes is not an open file descriptor. 

ENOTDIR The open file descriptor fildes does not refer to a directory. 

SEE ALSO

chroot(2). 

DIAGNOSTICS

Upon successful completion, a value of zero is returned.  Otherwise, a value of −1 is returned and errno is set to indicate the error. 

CX/UX Programmer’s Reference Manual