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Manual page for chdir(2)

chdir, fchdir - change working directory

SYNOPSIS

#include <unistd.h>

int chdir(const char *path);

int fchdir(int fildes);

MT-LEVEL

chdir() is Async-Signal-Safe

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.

RETURN VALUES

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

ERRORS

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 to an illegal address.
EINTR: A signal was caught during the execution of the chdir() function.
EIO: An I/O error occurred while reading from or writing to the file system.
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.
ENOENT: Either a component of the path prefix or the directory named by path does not exist or is a null pathname.
ENOLINK: path points to a remote machine and the link to that machine is no longer active.
ENOTDIR: A component of the path name is not a directory.
EMULTIHOP: Components of path require hopping to multiple remote machines and file system type does not allow it.

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