chdir (2)

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(The comments found at the beginning of the groff file "man2/chdir.2freebsd".)

NAME

chdir fchdir - change current working directory

LIBRARY

Lb libc

SYNOPSIS

In unistd.h Ft int Fn chdir const char *path Ft int Fn fchdir int fd

DESCRIPTION

The Fa path argument points to the pathname of a directory. The Fn chdir system call causes the named directory to become the current working directory, that is, the starting point for path searches of pathnames not beginning with a slash, `/'

The Fn fchdir system call causes the directory referenced by Fa fd to become the current working directory, the starting point for path searches of pathnames not beginning with a slash, `/'

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

RETURN VALUES

Rv -std

ERRORS

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

Bq Er ENOTDIR

A component of the path prefix is not a directory.

Bq Er ENAMETOOLONG

A component of a pathname exceeded 255 characters, or an entire path name exceeded 1023 characters.

Bq Er ENOENT

The named directory does not exist.

Bq Er ELOOP

Too many symbolic links were encountered in translating the pathname.

Bq Er EACCES

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

Bq Er EFAULT

The Fa path argument points outside the process's allocated address space.

Bq Er EIO

An I/O error occurred while reading from or writing to the file system.

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

Bq Er EACCES

Search permission is denied for the directory referenced by the file descriptor.

Bq Er ENOTDIR

The file descriptor does not reference a directory.

Bq Er EBADF

The argument Fa fd is not a valid file descriptor.

SEE ALSO

chroot(2)

STANDARDS

The Fn chdir system call is expected to conform to St -p1003.1-90 .

HISTORY

The Fn chdir system call appeared in AT&T System v7 . The Fn fchdir system call appeared in BSD 4.2