chdir(2)                                                              chdir(2)


NAME
     chdir, fchdir - change working directory

SYNOPSIS
     #include <unistd.h>

     int chdir(const char *path);

     int fchdir(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.

     EINTR               A signal was caught during the execution of the chdir
                         system call.

     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.

     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.

     ENOLINK             path points to a remote machine and the link to that
                         machine is no longer active.


     ETIMEDOUT           The named file is located on a remote file system
                         which is not available [see intro(2)].

     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:

     EACCES              Search permission is denied for fildes.

     EBADF               fildes is not an open file descriptor.

     EINTR               A signal was caught during the execution of the
                         fchdir system call.

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

     ENOLINK             fildes refers to a directory on a remote file system
                         and the link to that machine is no longer active.

     ETIMEDOUT           fildes refers to a directory on a remote file system
                         which is not available [see intro(2)].

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

     ENOENT              The directory pointed to by fildes does not exist.

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.


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