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NetBSD 6.1.5 - man page for fchdir (netbsd section 2)

CHDIR(2)			     BSD System Calls Manual				 CHDIR(2)

NAME
     chdir, fchdir -- change current working directory

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <unistd.h>

     int
     chdir(const char *path);

     int
     fchdir(int fd);

DESCRIPTION
     The path argument points to the pathname of a directory.  The chdir() function 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 fchdir() function causes the directory referenced by 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
     Upon successful completion, a value of 0 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:

     [ENOTDIR]		A component of the path prefix is not a directory.

     [ENAMETOOLONG]	A component of a pathname exceeded {NAME_MAX} characters, or an entire
			path name exceeded {PATH_MAX} characters.

     [ENOENT]		The named directory does not exist.

     [ELOOP]		Too many symbolic links were encountered in translating the pathname.

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

     [EFAULT]		path points outside the process's allocated address space.

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

     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 the directory referenced by the file
			descriptor.

     [ENOTDIR]		The file descriptor does not reference a directory.

     [EBADF]		The argument fd is not a valid file descriptor.

     [EPERM]		The argument fd references a directory which is not at or below the cur-
			rent process's root directory.

SEE ALSO
     chroot(2)

STANDARDS
     The chdir() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').

HISTORY
     The fchdir() function call appeared in 4.2BSD.

BSD					December 11, 1993				      BSD


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